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)
162 #define IEEE80211_RX_IN_SCAN BIT(0)
163 /* frame is destined to interface currently processed (incl. multicast frames) */
164 #define IEEE80211_RX_RA_MATCH BIT(1)
165 #define IEEE80211_RX_AMSDU BIT(2)
166 #define IEEE80211_RX_FRAGMENTED BIT(3)
167 #define IEEE80211_MALFORMED_ACTION_FRM BIT(4)
168 /* only add flags here that do not change with subframes of an aMPDU */
170 struct ieee80211_rx_data
{
172 struct ieee80211_local
*local
;
173 struct ieee80211_sub_if_data
*sdata
;
174 struct sta_info
*sta
;
175 struct ieee80211_key
*key
;
185 int head_len
, tail_len
;
189 struct ieee80211_if_ap
{
190 struct beacon_data
*beacon
;
192 struct list_head vlans
;
194 /* yes, this looks ugly, but guarantees that we can later use
196 * NB: don't touch this bitmap, use sta_info_{set,clear}_tim_bit */
197 u8 tim
[sizeof(unsigned long) * BITS_TO_LONGS(IEEE80211_MAX_AID
+ 1)];
198 struct sk_buff_head ps_bc_buf
;
199 atomic_t num_sta_ps
; /* number of stations in PS mode */
203 struct ieee80211_if_wds
{
204 struct sta_info
*sta
;
205 u8 remote_addr
[ETH_ALEN
];
208 struct ieee80211_if_vlan
{
209 struct list_head list
;
211 /* used for all tx if the VLAN is configured to 4-addr mode */
212 struct sta_info
*sta
;
216 __u32 fwded_mcast
; /* Mesh forwarded multicast frames */
217 __u32 fwded_unicast
; /* Mesh forwarded unicast frames */
218 __u32 fwded_frames
; /* Mesh total forwarded frames */
219 __u32 dropped_frames_ttl
; /* Not transmitted since mesh_ttl == 0*/
220 __u32 dropped_frames_no_route
; /* Not transmitted, no route found */
221 atomic_t estab_plinks
;
224 #define PREQ_Q_F_START 0x1
225 #define PREQ_Q_F_REFRESH 0x2
226 struct mesh_preq_queue
{
227 struct list_head list
;
232 enum ieee80211_work_type
{
233 IEEE80211_WORK_ABORT
,
234 IEEE80211_WORK_DIRECT_PROBE
,
236 IEEE80211_WORK_ASSOC_BEACON_WAIT
,
237 IEEE80211_WORK_ASSOC
,
238 IEEE80211_WORK_REMAIN_ON_CHANNEL
,
242 * enum work_done_result - indicates what to do after work was done
244 * @WORK_DONE_DESTROY: This work item is no longer needed, destroy.
245 * @WORK_DONE_REQUEUE: This work item was reset to be reused, and
246 * should be requeued.
248 enum work_done_result
{
253 struct ieee80211_work
{
254 struct list_head list
;
256 struct rcu_head rcu_head
;
258 struct ieee80211_sub_if_data
*sdata
;
260 enum work_done_result (*done
)(struct ieee80211_work
*wk
,
261 struct sk_buff
*skb
);
263 struct ieee80211_channel
*chan
;
264 enum nl80211_channel_type chan_type
;
266 unsigned long timeout
;
267 enum ieee80211_work_type type
;
269 u8 filter_ta
[ETH_ALEN
];
276 u16 algorithm
, transaction
;
277 u8 ssid
[IEEE80211_MAX_SSID_LEN
];
279 u8 key
[WLAN_KEY_LEN_WEP104
];
284 struct cfg80211_bss
*bss
;
285 const u8
*supp_rates
;
286 const u8
*ht_information_ie
;
287 enum ieee80211_smps_mode smps
;
290 u8 prev_bssid
[ETH_ALEN
];
291 u8 ssid
[IEEE80211_MAX_SSID_LEN
];
294 bool wmm_used
, use_11n
, uapsd_used
;
306 /* flags used in struct ieee80211_if_managed.flags */
307 enum ieee80211_sta_flags
{
308 IEEE80211_STA_BEACON_POLL
= BIT(0),
309 IEEE80211_STA_CONNECTION_POLL
= BIT(1),
310 IEEE80211_STA_CONTROL_PORT
= BIT(2),
311 IEEE80211_STA_DISABLE_11N
= BIT(4),
312 IEEE80211_STA_CSA_RECEIVED
= BIT(5),
313 IEEE80211_STA_MFP_ENABLED
= BIT(6),
314 IEEE80211_STA_UAPSD_ENABLED
= BIT(7),
315 IEEE80211_STA_NULLFUNC_ACKED
= BIT(8),
316 IEEE80211_STA_RESET_SIGNAL_AVE
= BIT(9),
319 struct ieee80211_if_managed
{
320 struct timer_list timer
;
321 struct timer_list conn_mon_timer
;
322 struct timer_list bcn_mon_timer
;
323 struct timer_list chswitch_timer
;
324 struct work_struct monitor_work
;
325 struct work_struct chswitch_work
;
326 struct work_struct beacon_connection_loss_work
;
328 unsigned long probe_timeout
;
329 int probe_send_count
;
332 struct cfg80211_bss
*associated
;
338 unsigned long timers_running
; /* used for quiesce/restart */
339 bool powersave
; /* powersave requested for this iface */
340 enum ieee80211_smps_mode req_smps
, /* requested smps mode */
341 ap_smps
, /* smps mode AP thinks we're in */
342 driver_smps_mode
; /* smps mode request */
344 struct work_struct request_smps_work
;
351 IEEE80211_MFP_DISABLED
,
352 IEEE80211_MFP_OPTIONAL
,
353 IEEE80211_MFP_REQUIRED
354 } mfp
; /* management frame protection */
356 int wmm_last_param_set
;
360 /* Signal strength from the last Beacon frame in the current BSS. */
361 int last_beacon_signal
;
364 * Weighted average of the signal strength from Beacon frames in the
365 * current BSS. This is in units of 1/16 of the signal unit to maintain
366 * accuracy and to speed up calculations, i.e., the value need to be
367 * divided by 16 to get the actual value.
369 int ave_beacon_signal
;
372 * Number of Beacon frames used in ave_beacon_signal. This can be used
373 * to avoid generating less reliable cqm events that would be based
374 * only on couple of received frames.
376 unsigned int count_beacon_signal
;
379 * Last Beacon frame signal strength average (ave_beacon_signal / 16)
380 * that triggered a cqm event. 0 indicates that no event has been
381 * generated for the current association.
383 int last_cqm_event_signal
;
386 struct ieee80211_if_ibss
{
387 struct timer_list timer
;
391 unsigned long last_scan_completed
;
402 u8 ssid
[IEEE80211_MAX_SSID_LEN
];
405 struct ieee80211_channel
*channel
;
407 unsigned long ibss_join_req
;
408 /* probe response/beacon for IBSS */
409 struct sk_buff
*presp
, *skb
;
412 IEEE80211_IBSS_MLME_SEARCH
,
413 IEEE80211_IBSS_MLME_JOINED
,
417 struct ieee80211_if_mesh
{
418 struct timer_list housekeeping_timer
;
419 struct timer_list mesh_path_timer
;
420 struct timer_list mesh_path_root_timer
;
422 unsigned long timers_running
;
424 unsigned long wrkq_flags
;
426 u8 mesh_id
[IEEE80211_MAX_MESH_ID_LEN
];
428 /* Active Path Selection Protocol Identifier */
430 /* Active Path Selection Metric Identifier */
432 /* Congestion Control Mode Identifier */
434 /* Synchronization Protocol Identifier */
436 /* Authentication Protocol Identifier */
438 /* Local mesh Sequence Number */
440 /* Last used PREQ ID */
443 /* Timestamp of last SN update */
444 unsigned long last_sn_update
;
445 /* Timestamp of last SN sent */
446 unsigned long last_preq
;
447 struct mesh_rmc
*rmc
;
448 spinlock_t mesh_preq_queue_lock
;
449 struct mesh_preq_queue preq_queue
;
451 struct mesh_stats mshstats
;
452 struct mesh_config mshcfg
;
454 bool accepting_plinks
;
457 #ifdef CONFIG_MAC80211_MESH
458 #define IEEE80211_IFSTA_MESH_CTR_INC(msh, name) \
459 do { (msh)->mshstats.name++; } while (0)
461 #define IEEE80211_IFSTA_MESH_CTR_INC(msh, name) \
466 * enum ieee80211_sub_if_data_flags - virtual interface flags
468 * @IEEE80211_SDATA_ALLMULTI: interface wants all multicast packets
469 * @IEEE80211_SDATA_PROMISC: interface is promisc
470 * @IEEE80211_SDATA_OPERATING_GMODE: operating in G-only mode
471 * @IEEE80211_SDATA_DONT_BRIDGE_PACKETS: bridge packets between
472 * associated stations and deliver multicast frames both
473 * back to wireless media and to the local net stack.
475 enum ieee80211_sub_if_data_flags
{
476 IEEE80211_SDATA_ALLMULTI
= BIT(0),
477 IEEE80211_SDATA_PROMISC
= BIT(1),
478 IEEE80211_SDATA_OPERATING_GMODE
= BIT(2),
479 IEEE80211_SDATA_DONT_BRIDGE_PACKETS
= BIT(3),
483 * enum ieee80211_sdata_state_bits - virtual interface state bits
484 * @SDATA_STATE_RUNNING: virtual interface is up & running; this
485 * mirrors netif_running() but is separate for interface type
486 * change handling while the interface is up
487 * @SDATA_STATE_OFFCHANNEL: This interface is currently in offchannel
488 * mode, so queues are stopped
490 enum ieee80211_sdata_state_bits
{
492 SDATA_STATE_OFFCHANNEL
,
495 struct ieee80211_sub_if_data
{
496 struct list_head list
;
498 struct wireless_dev wdev
;
501 struct list_head key_list
;
503 struct net_device
*dev
;
504 struct ieee80211_local
*local
;
510 int drop_unencrypted
;
515 * keep track of whether the HT opmode (stored in
516 * vif.bss_info.ht_operation_mode) is valid.
518 bool ht_opmode_valid
;
520 /* to detect idle changes */
523 /* Fragment table for host-based reassembly */
524 struct ieee80211_fragment_entry fragments
[IEEE80211_FRAGMENT_MAX
];
525 unsigned int fragment_next
;
527 #define NUM_DEFAULT_KEYS 4
528 #define NUM_DEFAULT_MGMT_KEYS 2
529 struct ieee80211_key
*keys
[NUM_DEFAULT_KEYS
+ NUM_DEFAULT_MGMT_KEYS
];
530 struct ieee80211_key
*default_key
;
531 struct ieee80211_key
*default_mgmt_key
;
534 __be16 control_port_protocol
;
535 bool control_port_no_encrypt
;
537 struct work_struct work
;
538 struct sk_buff_head skb_queue
;
540 bool arp_filter_state
;
543 * AP this belongs to: self in AP mode and
544 * corresponding AP in VLAN mode, NULL for
545 * all others (might be needed later in IBSS)
547 struct ieee80211_if_ap
*bss
;
549 /* bitmap of allowed (non-MCS) rate indexes for rate control */
550 u32 rc_rateidx_mask
[IEEE80211_NUM_BANDS
];
553 struct ieee80211_if_ap ap
;
554 struct ieee80211_if_wds wds
;
555 struct ieee80211_if_vlan vlan
;
556 struct ieee80211_if_managed mgd
;
557 struct ieee80211_if_ibss ibss
;
558 #ifdef CONFIG_MAC80211_MESH
559 struct ieee80211_if_mesh mesh
;
564 #ifdef CONFIG_MAC80211_DEBUGFS
567 struct dentry
*default_key
;
568 struct dentry
*default_mgmt_key
;
571 /* must be last, dynamically sized area in this! */
572 struct ieee80211_vif vif
;
576 struct ieee80211_sub_if_data
*vif_to_sdata(struct ieee80211_vif
*p
)
578 return container_of(p
, struct ieee80211_sub_if_data
, vif
);
582 ieee80211_sdata_set_mesh_id(struct ieee80211_sub_if_data
*sdata
,
583 u8 mesh_id_len
, u8
*mesh_id
)
585 #ifdef CONFIG_MAC80211_MESH
586 struct ieee80211_if_mesh
*ifmsh
= &sdata
->u
.mesh
;
587 ifmsh
->mesh_id_len
= mesh_id_len
;
588 memcpy(ifmsh
->mesh_id
, mesh_id
, mesh_id_len
);
594 enum sdata_queue_type
{
595 IEEE80211_SDATA_QUEUE_TYPE_FRAME
= 0,
596 IEEE80211_SDATA_QUEUE_AGG_START
= 1,
597 IEEE80211_SDATA_QUEUE_AGG_STOP
= 2,
601 IEEE80211_RX_MSG
= 1,
602 IEEE80211_TX_STATUS_MSG
= 2,
605 enum queue_stop_reason
{
606 IEEE80211_QUEUE_STOP_REASON_DRIVER
,
607 IEEE80211_QUEUE_STOP_REASON_PS
,
608 IEEE80211_QUEUE_STOP_REASON_CSA
,
609 IEEE80211_QUEUE_STOP_REASON_AGGREGATION
,
610 IEEE80211_QUEUE_STOP_REASON_SUSPEND
,
611 IEEE80211_QUEUE_STOP_REASON_SKB_ADD
,
615 * mac80211 scan flags - currently active scan mode
617 * @SCAN_SW_SCANNING: We're currently in the process of scanning but may as
618 * well be on the operating channel
619 * @SCAN_HW_SCANNING: The hardware is scanning for us, we have no way to
620 * determine if we are on the operating channel or not
621 * @SCAN_OFF_CHANNEL: We're off our operating channel for scanning,
622 * gets only set in conjunction with SCAN_SW_SCANNING
623 * @SCAN_COMPLETED: Set for our scan work function when the driver reported
624 * that the scan completed.
625 * @SCAN_ABORTED: Set for our scan work function when the driver reported
626 * a scan complete for an aborted scan.
637 * enum mac80211_scan_state - scan state machine states
639 * @SCAN_DECISION: Main entry point to the scan state machine, this state
640 * determines if we should keep on scanning or switch back to the
642 * @SCAN_SET_CHANNEL: Set the next channel to be scanned
643 * @SCAN_SEND_PROBE: Send probe requests and wait for probe responses
644 * @SCAN_LEAVE_OPER_CHANNEL: Leave the operating channel, notify the AP
645 * about us leaving the channel and stop all associated STA interfaces
646 * @SCAN_ENTER_OPER_CHANNEL: Enter the operating channel again, notify the
647 * AP about us being back and restart all associated STA interfaces
649 enum mac80211_scan_state
{
653 SCAN_LEAVE_OPER_CHANNEL
,
654 SCAN_ENTER_OPER_CHANNEL
,
657 struct ieee80211_local
{
658 /* embed the driver visible part.
659 * don't cast (use the static inlines below), but we keep
660 * it first anyway so they become a no-op */
661 struct ieee80211_hw hw
;
663 const struct ieee80211_ops
*ops
;
666 * work stuff, potentially off-channel (in the future)
668 struct list_head work_list
;
669 struct timer_list work_timer
;
670 struct work_struct work_work
;
671 struct sk_buff_head work_skb_queue
;
674 * private workqueue to mac80211. mac80211 makes this accessible
675 * via ieee80211_queue_work()
677 struct workqueue_struct
*workqueue
;
679 unsigned long queue_stop_reasons
[IEEE80211_MAX_QUEUES
];
680 /* also used to protect ampdu_ac_queue and amdpu_ac_stop_refcnt */
681 spinlock_t queue_stop_reason_lock
;
684 int monitors
, cooked_mntrs
;
685 /* number of interfaces with corresponding FIF_ flags */
686 int fif_fcsfail
, fif_plcpfail
, fif_control
, fif_other_bss
, fif_pspoll
;
687 unsigned int filter_flags
; /* FIF_* */
689 bool wiphy_ciphers_allocated
;
691 /* protects the aggregated multicast list and filter calls */
692 spinlock_t filter_lock
;
694 /* used for uploading changed mc list */
695 struct work_struct reconfig_filter
;
697 /* used to reconfigure hardware SM PS */
698 struct work_struct recalc_smps
;
700 /* aggregated multicast list */
701 struct netdev_hw_addr_list mc_list
;
703 bool tim_in_locked_section
; /* see ieee80211_beacon_get() */
706 * suspended is true if we finished all the suspend _and_ we have
707 * not yet come up from resume. This is to be used by mac80211
708 * to ensure driver sanity during suspend and mac80211's own
709 * sanity. It can eventually be used for WoW as well.
714 * Resuming is true while suspended, but when we're reprogramming the
715 * hardware -- at that time it's allowed to use ieee80211_queue_work()
716 * again even though some other parts of the stack are still suspended
717 * and we still drop received frames to avoid waking the stack.
722 * quiescing is true during the suspend process _only_ to
723 * ease timer cancelling etc.
727 /* device is started */
730 int tx_headroom
; /* required headroom for hardware/radiotap */
732 /* Tasklet and skb queue to process calls from IRQ mode. All frames
733 * added to skb_queue will be processed, but frames in
734 * skb_queue_unreliable may be dropped if the total length of these
735 * queues increases over the limit. */
736 #define IEEE80211_IRQSAFE_QUEUE_LIMIT 128
737 struct tasklet_struct tasklet
;
738 struct sk_buff_head skb_queue
;
739 struct sk_buff_head skb_queue_unreliable
;
743 * The mutex only protects the list and counter,
744 * reads are done in RCU.
745 * Additionally, the lock protects the hash table,
746 * the pending list and each BSS's TIM bitmap.
748 struct mutex sta_mtx
;
750 unsigned long num_sta
;
751 struct list_head sta_list
, sta_pending_list
;
752 struct sta_info
*sta_hash
[STA_HASH_SIZE
];
753 struct timer_list sta_cleanup
;
754 struct work_struct sta_finish_work
;
757 struct sk_buff_head pending
[IEEE80211_MAX_QUEUES
];
758 struct tasklet_struct tx_pending_tasklet
;
760 atomic_t agg_queue_stop
[IEEE80211_MAX_QUEUES
];
762 /* number of interfaces with corresponding IFF_ flags */
763 atomic_t iff_allmultis
, iff_promiscs
;
765 struct rate_control_ref
*rate_ctrl
;
767 struct crypto_blkcipher
*wep_tx_tfm
;
768 struct crypto_blkcipher
*wep_rx_tfm
;
772 struct list_head interfaces
;
773 struct mutex iflist_mtx
;
776 * Key mutex, protects sdata's key_list and sta_info's
777 * key pointers (write access, they're RCU.)
779 struct mutex key_mtx
;
781 /* mutex for scan and work locking */
784 /* Scanning and BSS list */
785 unsigned long scanning
;
786 struct cfg80211_ssid scan_ssid
;
787 struct cfg80211_scan_request
*int_scan_req
;
788 struct cfg80211_scan_request
*scan_req
, *hw_scan_req
;
789 struct ieee80211_channel
*scan_channel
;
790 enum ieee80211_band hw_scan_band
;
791 int scan_channel_idx
;
794 unsigned long leave_oper_channel_time
;
795 enum mac80211_scan_state next_scan_state
;
796 struct delayed_work scan_work
;
797 struct ieee80211_sub_if_data
*scan_sdata
;
798 enum nl80211_channel_type _oper_channel_type
;
799 struct ieee80211_channel
*oper_channel
, *csa_channel
;
801 /* Temporary remain-on-channel for off-channel operations */
802 struct ieee80211_channel
*tmp_channel
;
803 enum nl80211_channel_type tmp_channel_type
;
806 /* dot11CountersTable */
807 u32 dot11TransmittedFragmentCount
;
808 u32 dot11MulticastTransmittedFrameCount
;
809 u32 dot11FailedCount
;
811 u32 dot11MultipleRetryCount
;
812 u32 dot11FrameDuplicateCount
;
813 u32 dot11ReceivedFragmentCount
;
814 u32 dot11MulticastReceivedFrameCount
;
815 u32 dot11TransmittedFrameCount
;
817 #ifdef CONFIG_MAC80211_LEDS
818 int tx_led_counter
, rx_led_counter
;
819 struct led_trigger
*tx_led
, *rx_led
, *assoc_led
, *radio_led
;
820 char tx_led_name
[32], rx_led_name
[32],
821 assoc_led_name
[32], radio_led_name
[32];
824 #ifdef CONFIG_MAC80211_DEBUG_COUNTERS
825 /* TX/RX handler statistics */
826 unsigned int tx_handlers_drop
;
827 unsigned int tx_handlers_queued
;
828 unsigned int tx_handlers_drop_unencrypted
;
829 unsigned int tx_handlers_drop_fragment
;
830 unsigned int tx_handlers_drop_wep
;
831 unsigned int tx_handlers_drop_not_assoc
;
832 unsigned int tx_handlers_drop_unauth_port
;
833 unsigned int rx_handlers_drop
;
834 unsigned int rx_handlers_queued
;
835 unsigned int rx_handlers_drop_nullfunc
;
836 unsigned int rx_handlers_drop_defrag
;
837 unsigned int rx_handlers_drop_short
;
838 unsigned int rx_handlers_drop_passive_scan
;
839 unsigned int tx_expand_skb_head
;
840 unsigned int tx_expand_skb_head_cloned
;
841 unsigned int rx_expand_skb_head
;
842 unsigned int rx_expand_skb_head2
;
843 unsigned int rx_handlers_fragments
;
844 unsigned int tx_status_drop
;
845 #define I802_DEBUG_INC(c) (c)++
846 #else /* CONFIG_MAC80211_DEBUG_COUNTERS */
847 #define I802_DEBUG_INC(c) do { } while (0)
848 #endif /* CONFIG_MAC80211_DEBUG_COUNTERS */
851 int total_ps_buffered
; /* total number of all buffered unicast and
852 * multicast packets for power saving stations
854 int wifi_wme_noack_test
;
855 unsigned int wmm_acm
; /* bit field of ACM bits (BIT(802.1D tag)) */
858 * Bitmask of enabled u-apsd queues,
859 * IEEE80211_WMM_IE_STA_QOSINFO_AC_BE & co. Needs a new association
862 unsigned int uapsd_queues
;
865 * Maximum number of buffered frames AP can deliver during a
866 * service period, IEEE80211_WMM_IE_STA_QOSINFO_SP_ALL or similar.
867 * Needs a new association to take effect.
869 unsigned int uapsd_max_sp_len
;
872 bool offchannel_ps_enabled
;
874 * PS can only be enabled when we have exactly one managed
875 * interface (and monitors) in PS, this then points there.
877 struct ieee80211_sub_if_data
*ps_sdata
;
878 struct work_struct dynamic_ps_enable_work
;
879 struct work_struct dynamic_ps_disable_work
;
880 struct timer_list dynamic_ps_timer
;
881 struct notifier_block network_latency_notifier
;
882 struct notifier_block ifa_notifier
;
885 * The dynamic ps timeout configured from user space via WEXT -
886 * this will override whatever chosen by mac80211 internally.
888 int dynamic_ps_forced_timeout
;
889 int dynamic_ps_user_timeout
;
890 bool disable_dynamic_ps
;
892 int user_power_level
; /* in dBm */
893 int power_constr_level
; /* in dBm */
895 enum ieee80211_smps_mode smps_mode
;
897 struct work_struct restart_work
;
899 #ifdef CONFIG_MAC80211_DEBUGFS
900 struct local_debugfsdentries
{
901 struct dentry
*rcdir
;
902 struct dentry
*stations
;
907 /* dummy netdev for use w/ NAPI */
908 struct net_device napi_dev
;
910 struct napi_struct napi
;
913 static inline struct ieee80211_sub_if_data
*
914 IEEE80211_DEV_TO_SUB_IF(struct net_device
*dev
)
916 return netdev_priv(dev
);
919 /* this struct represents 802.11n's RA/TID combination */
920 struct ieee80211_ra_tid
{
925 /* Parsed Information Elements */
926 struct ieee802_11_elems
{
930 /* pointers to IEs */
936 struct ieee80211_tim_ie
*tim
;
945 struct ieee80211_ht_cap
*ht_cap_elem
;
946 struct ieee80211_ht_info
*ht_info_elem
;
947 struct ieee80211_meshconf_ie
*mesh_config
;
953 struct ieee80211_rann_ie
*rann
;
957 u8
*quiet_elem
; /* first quite element */
960 /* length of them, respectively */
972 u8 ext_supp_rates_len
;
980 u8 ch_switch_elem_len
;
982 u8 pwr_constr_elem_len
;
984 u8 num_of_quiet_elem
; /* can be more the one */
988 static inline struct ieee80211_local
*hw_to_local(
989 struct ieee80211_hw
*hw
)
991 return container_of(hw
, struct ieee80211_local
, hw
);
994 static inline struct ieee80211_hw
*local_to_hw(
995 struct ieee80211_local
*local
)
1001 static inline int ieee80211_bssid_match(const u8
*raddr
, const u8
*addr
)
1003 return compare_ether_addr(raddr
, addr
) == 0 ||
1004 is_broadcast_ether_addr(raddr
);
1008 int ieee80211_hw_config(struct ieee80211_local
*local
, u32 changed
);
1009 void ieee80211_tx_set_protected(struct ieee80211_tx_data
*tx
);
1010 void ieee80211_bss_info_change_notify(struct ieee80211_sub_if_data
*sdata
,
1012 void ieee80211_configure_filter(struct ieee80211_local
*local
);
1013 u32
ieee80211_reset_erp_info(struct ieee80211_sub_if_data
*sdata
);
1015 extern bool ieee80211_disable_40mhz_24ghz
;
1018 void ieee80211_sta_setup_sdata(struct ieee80211_sub_if_data
*sdata
);
1019 int ieee80211_mgd_auth(struct ieee80211_sub_if_data
*sdata
,
1020 struct cfg80211_auth_request
*req
);
1021 int ieee80211_mgd_assoc(struct ieee80211_sub_if_data
*sdata
,
1022 struct cfg80211_assoc_request
*req
);
1023 int ieee80211_mgd_deauth(struct ieee80211_sub_if_data
*sdata
,
1024 struct cfg80211_deauth_request
*req
,
1026 int ieee80211_mgd_disassoc(struct ieee80211_sub_if_data
*sdata
,
1027 struct cfg80211_disassoc_request
*req
,
1029 void ieee80211_send_pspoll(struct ieee80211_local
*local
,
1030 struct ieee80211_sub_if_data
*sdata
);
1031 void ieee80211_recalc_ps(struct ieee80211_local
*local
, s32 latency
);
1032 int ieee80211_max_network_latency(struct notifier_block
*nb
,
1033 unsigned long data
, void *dummy
);
1034 int ieee80211_set_arp_filter(struct ieee80211_sub_if_data
*sdata
);
1035 void ieee80211_sta_process_chanswitch(struct ieee80211_sub_if_data
*sdata
,
1036 struct ieee80211_channel_sw_ie
*sw_elem
,
1037 struct ieee80211_bss
*bss
,
1039 void ieee80211_sta_quiesce(struct ieee80211_sub_if_data
*sdata
);
1040 void ieee80211_sta_restart(struct ieee80211_sub_if_data
*sdata
);
1041 void ieee80211_sta_work(struct ieee80211_sub_if_data
*sdata
);
1042 void ieee80211_sta_rx_queued_mgmt(struct ieee80211_sub_if_data
*sdata
,
1043 struct sk_buff
*skb
);
1046 void ieee80211_ibss_notify_scan_completed(struct ieee80211_local
*local
);
1047 void ieee80211_ibss_setup_sdata(struct ieee80211_sub_if_data
*sdata
);
1048 struct sta_info
*ieee80211_ibss_add_sta(struct ieee80211_sub_if_data
*sdata
,
1049 u8
*bssid
, u8
*addr
, u32 supp_rates
,
1051 int ieee80211_ibss_join(struct ieee80211_sub_if_data
*sdata
,
1052 struct cfg80211_ibss_params
*params
);
1053 int ieee80211_ibss_leave(struct ieee80211_sub_if_data
*sdata
);
1054 void ieee80211_ibss_quiesce(struct ieee80211_sub_if_data
*sdata
);
1055 void ieee80211_ibss_restart(struct ieee80211_sub_if_data
*sdata
);
1056 void ieee80211_ibss_work(struct ieee80211_sub_if_data
*sdata
);
1057 void ieee80211_ibss_rx_queued_mgmt(struct ieee80211_sub_if_data
*sdata
,
1058 struct sk_buff
*skb
);
1061 void ieee80211_mesh_work(struct ieee80211_sub_if_data
*sdata
);
1062 void ieee80211_mesh_rx_queued_mgmt(struct ieee80211_sub_if_data
*sdata
,
1063 struct sk_buff
*skb
);
1065 /* scan/BSS handling */
1066 void ieee80211_scan_work(struct work_struct
*work
);
1067 int ieee80211_request_internal_scan(struct ieee80211_sub_if_data
*sdata
,
1068 const u8
*ssid
, u8 ssid_len
,
1069 struct ieee80211_channel
*chan
);
1070 int ieee80211_request_scan(struct ieee80211_sub_if_data
*sdata
,
1071 struct cfg80211_scan_request
*req
);
1072 void ieee80211_scan_cancel(struct ieee80211_local
*local
);
1074 ieee80211_scan_rx(struct ieee80211_sub_if_data
*sdata
, struct sk_buff
*skb
);
1076 void ieee80211_mlme_notify_scan_completed(struct ieee80211_local
*local
);
1077 struct ieee80211_bss
*
1078 ieee80211_bss_info_update(struct ieee80211_local
*local
,
1079 struct ieee80211_rx_status
*rx_status
,
1080 struct ieee80211_mgmt
*mgmt
,
1082 struct ieee802_11_elems
*elems
,
1083 struct ieee80211_channel
*channel
,
1085 struct ieee80211_bss
*
1086 ieee80211_rx_bss_get(struct ieee80211_local
*local
, u8
*bssid
, int freq
,
1087 u8
*ssid
, u8 ssid_len
);
1088 void ieee80211_rx_bss_put(struct ieee80211_local
*local
,
1089 struct ieee80211_bss
*bss
);
1091 /* off-channel helpers */
1092 void ieee80211_offchannel_stop_beaconing(struct ieee80211_local
*local
);
1093 void ieee80211_offchannel_stop_station(struct ieee80211_local
*local
);
1094 void ieee80211_offchannel_return(struct ieee80211_local
*local
,
1095 bool enable_beaconing
);
1097 /* interface handling */
1098 int ieee80211_iface_init(void);
1099 void ieee80211_iface_exit(void);
1100 int ieee80211_if_add(struct ieee80211_local
*local
, const char *name
,
1101 struct net_device
**new_dev
, enum nl80211_iftype type
,
1102 struct vif_params
*params
);
1103 int ieee80211_if_change_type(struct ieee80211_sub_if_data
*sdata
,
1104 enum nl80211_iftype type
);
1105 void ieee80211_if_remove(struct ieee80211_sub_if_data
*sdata
);
1106 void ieee80211_remove_interfaces(struct ieee80211_local
*local
);
1107 u32
__ieee80211_recalc_idle(struct ieee80211_local
*local
);
1108 void ieee80211_recalc_idle(struct ieee80211_local
*local
);
1110 static inline bool ieee80211_sdata_running(struct ieee80211_sub_if_data
*sdata
)
1112 return test_bit(SDATA_STATE_RUNNING
, &sdata
->state
);
1116 void ieee80211_clear_tx_pending(struct ieee80211_local
*local
);
1117 void ieee80211_tx_pending(unsigned long data
);
1118 netdev_tx_t
ieee80211_monitor_start_xmit(struct sk_buff
*skb
,
1119 struct net_device
*dev
);
1120 netdev_tx_t
ieee80211_subif_start_xmit(struct sk_buff
*skb
,
1121 struct net_device
*dev
);
1124 * radiotap header for status frames
1126 struct ieee80211_tx_status_rtap_hdr
{
1127 struct ieee80211_radiotap_header hdr
;
1129 u8 padding_for_rate
;
1136 void ieee80211_ht_cap_ie_to_sta_ht_cap(struct ieee80211_supported_band
*sband
,
1137 struct ieee80211_ht_cap
*ht_cap_ie
,
1138 struct ieee80211_sta_ht_cap
*ht_cap
);
1139 void ieee80211_send_bar(struct ieee80211_sub_if_data
*sdata
, u8
*ra
, u16 tid
, u16 ssn
);
1140 void ieee80211_send_delba(struct ieee80211_sub_if_data
*sdata
,
1141 const u8
*da
, u16 tid
,
1142 u16 initiator
, u16 reason_code
);
1143 int ieee80211_send_smps_action(struct ieee80211_sub_if_data
*sdata
,
1144 enum ieee80211_smps_mode smps
, const u8
*da
,
1146 void ieee80211_request_smps_work(struct work_struct
*work
);
1148 void ___ieee80211_stop_rx_ba_session(struct sta_info
*sta
, u16 tid
,
1149 u16 initiator
, u16 reason
);
1150 void __ieee80211_stop_rx_ba_session(struct sta_info
*sta
, u16 tid
,
1151 u16 initiator
, u16 reason
);
1152 void ieee80211_sta_tear_down_BA_sessions(struct sta_info
*sta
);
1153 void ieee80211_process_delba(struct ieee80211_sub_if_data
*sdata
,
1154 struct sta_info
*sta
,
1155 struct ieee80211_mgmt
*mgmt
, size_t len
);
1156 void ieee80211_process_addba_resp(struct ieee80211_local
*local
,
1157 struct sta_info
*sta
,
1158 struct ieee80211_mgmt
*mgmt
,
1160 void ieee80211_process_addba_request(struct ieee80211_local
*local
,
1161 struct sta_info
*sta
,
1162 struct ieee80211_mgmt
*mgmt
,
1165 int __ieee80211_stop_tx_ba_session(struct sta_info
*sta
, u16 tid
,
1166 enum ieee80211_back_parties initiator
);
1167 int ___ieee80211_stop_tx_ba_session(struct sta_info
*sta
, u16 tid
,
1168 enum ieee80211_back_parties initiator
);
1169 void ieee80211_start_tx_ba_cb(struct ieee80211_vif
*vif
, u8
*ra
, u16 tid
);
1170 void ieee80211_stop_tx_ba_cb(struct ieee80211_vif
*vif
, u8
*ra
, u8 tid
);
1171 void ieee80211_ba_session_work(struct work_struct
*work
);
1172 void ieee80211_tx_ba_session_handle_start(struct sta_info
*sta
, int tid
);
1173 void ieee80211_release_reorder_timeout(struct sta_info
*sta
, int tid
);
1175 /* Spectrum management */
1176 void ieee80211_process_measurement_req(struct ieee80211_sub_if_data
*sdata
,
1177 struct ieee80211_mgmt
*mgmt
,
1180 /* Suspend/resume and hw reconfiguration */
1181 int ieee80211_reconfig(struct ieee80211_local
*local
);
1182 void ieee80211_stop_device(struct ieee80211_local
*local
);
1185 int __ieee80211_suspend(struct ieee80211_hw
*hw
);
1187 static inline int __ieee80211_resume(struct ieee80211_hw
*hw
)
1189 struct ieee80211_local
*local
= hw_to_local(hw
);
1191 WARN(test_bit(SCAN_HW_SCANNING
, &local
->scanning
),
1192 "%s: resume with hardware scan still in progress\n",
1193 wiphy_name(hw
->wiphy
));
1195 return ieee80211_reconfig(hw_to_local(hw
));
1198 static inline int __ieee80211_suspend(struct ieee80211_hw
*hw
)
1203 static inline int __ieee80211_resume(struct ieee80211_hw
*hw
)
1209 /* utility functions/constants */
1210 extern void *mac80211_wiphy_privid
; /* for wiphy privid */
1211 u8
*ieee80211_get_bssid(struct ieee80211_hdr
*hdr
, size_t len
,
1212 enum nl80211_iftype type
);
1213 int ieee80211_frame_duration(struct ieee80211_local
*local
, size_t len
,
1214 int rate
, int erp
, int short_preamble
);
1215 void mac80211_ev_michael_mic_failure(struct ieee80211_sub_if_data
*sdata
, int keyidx
,
1216 struct ieee80211_hdr
*hdr
, const u8
*tsc
,
1218 void ieee80211_set_wmm_default(struct ieee80211_sub_if_data
*sdata
);
1219 void ieee80211_tx_skb(struct ieee80211_sub_if_data
*sdata
, struct sk_buff
*skb
);
1220 void ieee802_11_parse_elems(u8
*start
, size_t len
,
1221 struct ieee802_11_elems
*elems
);
1222 u32
ieee802_11_parse_elems_crc(u8
*start
, size_t len
,
1223 struct ieee802_11_elems
*elems
,
1224 u64 filter
, u32 crc
);
1225 u32
ieee80211_mandatory_rates(struct ieee80211_local
*local
,
1226 enum ieee80211_band band
);
1228 void ieee80211_dynamic_ps_enable_work(struct work_struct
*work
);
1229 void ieee80211_dynamic_ps_disable_work(struct work_struct
*work
);
1230 void ieee80211_dynamic_ps_timer(unsigned long data
);
1231 void ieee80211_send_nullfunc(struct ieee80211_local
*local
,
1232 struct ieee80211_sub_if_data
*sdata
,
1234 void ieee80211_sta_rx_notify(struct ieee80211_sub_if_data
*sdata
,
1235 struct ieee80211_hdr
*hdr
);
1236 void ieee80211_beacon_connection_loss_work(struct work_struct
*work
);
1238 void ieee80211_wake_queues_by_reason(struct ieee80211_hw
*hw
,
1239 enum queue_stop_reason reason
);
1240 void ieee80211_stop_queues_by_reason(struct ieee80211_hw
*hw
,
1241 enum queue_stop_reason reason
);
1242 void ieee80211_wake_queue_by_reason(struct ieee80211_hw
*hw
, int queue
,
1243 enum queue_stop_reason reason
);
1244 void ieee80211_stop_queue_by_reason(struct ieee80211_hw
*hw
, int queue
,
1245 enum queue_stop_reason reason
);
1246 void ieee80211_add_pending_skb(struct ieee80211_local
*local
,
1247 struct sk_buff
*skb
);
1248 int ieee80211_add_pending_skbs(struct ieee80211_local
*local
,
1249 struct sk_buff_head
*skbs
);
1251 void ieee80211_send_auth(struct ieee80211_sub_if_data
*sdata
,
1252 u16 transaction
, u16 auth_alg
,
1253 u8
*extra
, size_t extra_len
, const u8
*bssid
,
1254 const u8
*key
, u8 key_len
, u8 key_idx
);
1255 int ieee80211_build_preq_ies(struct ieee80211_local
*local
, u8
*buffer
,
1256 const u8
*ie
, size_t ie_len
,
1257 enum ieee80211_band band
);
1258 void ieee80211_send_probe_req(struct ieee80211_sub_if_data
*sdata
, u8
*dst
,
1259 const u8
*ssid
, size_t ssid_len
,
1260 const u8
*ie
, size_t ie_len
);
1262 void ieee80211_sta_def_wmm_params(struct ieee80211_sub_if_data
*sdata
,
1263 const size_t supp_rates_len
,
1264 const u8
*supp_rates
);
1265 u32
ieee80211_sta_get_rates(struct ieee80211_local
*local
,
1266 struct ieee802_11_elems
*elems
,
1267 enum ieee80211_band band
);
1268 int __ieee80211_request_smps(struct ieee80211_sub_if_data
*sdata
,
1269 enum ieee80211_smps_mode smps_mode
);
1270 void ieee80211_recalc_smps(struct ieee80211_local
*local
,
1271 struct ieee80211_sub_if_data
*forsdata
);
1273 size_t ieee80211_ie_split(const u8
*ies
, size_t ielen
,
1274 const u8
*ids
, int n_ids
, size_t offset
);
1275 size_t ieee80211_ie_split_vendor(const u8
*ies
, size_t ielen
, size_t offset
);
1277 /* internal work items */
1278 void ieee80211_work_init(struct ieee80211_local
*local
);
1279 void ieee80211_add_work(struct ieee80211_work
*wk
);
1280 void free_work(struct ieee80211_work
*wk
);
1281 void ieee80211_work_purge(struct ieee80211_sub_if_data
*sdata
);
1282 ieee80211_rx_result
ieee80211_work_rx_mgmt(struct ieee80211_sub_if_data
*sdata
,
1283 struct sk_buff
*skb
);
1284 int ieee80211_wk_remain_on_channel(struct ieee80211_sub_if_data
*sdata
,
1285 struct ieee80211_channel
*chan
,
1286 enum nl80211_channel_type channel_type
,
1287 unsigned int duration
, u64
*cookie
);
1288 int ieee80211_wk_cancel_remain_on_channel(
1289 struct ieee80211_sub_if_data
*sdata
, u64 cookie
);
1291 /* channel management */
1292 enum ieee80211_chan_mode
{
1293 CHAN_MODE_UNDEFINED
,
1298 enum ieee80211_chan_mode
1299 ieee80211_get_channel_mode(struct ieee80211_local
*local
,
1300 struct ieee80211_sub_if_data
*ignore
);
1301 bool ieee80211_set_channel_type(struct ieee80211_local
*local
,
1302 struct ieee80211_sub_if_data
*sdata
,
1303 enum nl80211_channel_type chantype
);
1305 #ifdef CONFIG_MAC80211_NOINLINE
1306 #define debug_noinline noinline
1308 #define debug_noinline
1311 #endif /* IEEE80211_I_H */