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),
322 struct ieee80211_if_managed
{
323 struct timer_list timer
;
324 struct timer_list conn_mon_timer
;
325 struct timer_list bcn_mon_timer
;
326 struct timer_list chswitch_timer
;
327 struct work_struct work
;
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 struct sk_buff_head skb_queue
;
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 */
354 IEEE80211_MFP_DISABLED
,
355 IEEE80211_MFP_OPTIONAL
,
356 IEEE80211_MFP_REQUIRED
357 } mfp
; /* management frame protection */
359 int wmm_last_param_set
;
364 enum ieee80211_ibss_request
{
365 IEEE80211_IBSS_REQ_RUN
= 0,
368 struct ieee80211_if_ibss
{
369 struct timer_list timer
;
370 struct work_struct work
;
372 struct sk_buff_head skb_queue
;
374 unsigned long request
;
375 unsigned long last_scan_completed
;
384 u8 ssid
[IEEE80211_MAX_SSID_LEN
];
387 struct ieee80211_channel
*channel
;
389 unsigned long ibss_join_req
;
390 /* probe response/beacon for IBSS */
391 struct sk_buff
*presp
, *skb
;
394 IEEE80211_IBSS_MLME_SEARCH
,
395 IEEE80211_IBSS_MLME_JOINED
,
399 struct ieee80211_if_mesh
{
400 struct work_struct work
;
401 struct timer_list housekeeping_timer
;
402 struct timer_list mesh_path_timer
;
403 struct timer_list mesh_path_root_timer
;
404 struct sk_buff_head skb_queue
;
406 unsigned long timers_running
;
408 unsigned long wrkq_flags
;
410 u8 mesh_id
[IEEE80211_MAX_MESH_ID_LEN
];
412 /* Active Path Selection Protocol Identifier */
414 /* Active Path Selection Metric Identifier */
416 /* Congestion Control Mode Identifier */
418 /* Synchronization Protocol Identifier */
420 /* Authentication Protocol Identifier */
422 /* Local mesh Sequence Number */
424 /* Last used PREQ ID */
427 /* Timestamp of last SN update */
428 unsigned long last_sn_update
;
429 /* Timestamp of last SN sent */
430 unsigned long last_preq
;
431 struct mesh_rmc
*rmc
;
432 spinlock_t mesh_preq_queue_lock
;
433 struct mesh_preq_queue preq_queue
;
435 struct mesh_stats mshstats
;
436 struct mesh_config mshcfg
;
438 bool accepting_plinks
;
441 #ifdef CONFIG_MAC80211_MESH
442 #define IEEE80211_IFSTA_MESH_CTR_INC(msh, name) \
443 do { (msh)->mshstats.name++; } while (0)
445 #define IEEE80211_IFSTA_MESH_CTR_INC(msh, name) \
450 * enum ieee80211_sub_if_data_flags - virtual interface flags
452 * @IEEE80211_SDATA_ALLMULTI: interface wants all multicast packets
453 * @IEEE80211_SDATA_PROMISC: interface is promisc
454 * @IEEE80211_SDATA_OPERATING_GMODE: operating in G-only mode
455 * @IEEE80211_SDATA_DONT_BRIDGE_PACKETS: bridge packets between
456 * associated stations and deliver multicast frames both
457 * back to wireless media and to the local net stack.
459 enum ieee80211_sub_if_data_flags
{
460 IEEE80211_SDATA_ALLMULTI
= BIT(0),
461 IEEE80211_SDATA_PROMISC
= BIT(1),
462 IEEE80211_SDATA_OPERATING_GMODE
= BIT(2),
463 IEEE80211_SDATA_DONT_BRIDGE_PACKETS
= BIT(3),
466 struct ieee80211_sub_if_data
{
467 struct list_head list
;
469 struct wireless_dev wdev
;
472 struct list_head key_list
;
474 struct net_device
*dev
;
475 struct ieee80211_local
*local
;
479 int drop_unencrypted
;
484 * keep track of whether the HT opmode (stored in
485 * vif.bss_info.ht_operation_mode) is valid.
487 bool ht_opmode_valid
;
489 /* Fragment table for host-based reassembly */
490 struct ieee80211_fragment_entry fragments
[IEEE80211_FRAGMENT_MAX
];
491 unsigned int fragment_next
;
493 #define NUM_DEFAULT_KEYS 4
494 #define NUM_DEFAULT_MGMT_KEYS 2
495 struct ieee80211_key
*keys
[NUM_DEFAULT_KEYS
+ NUM_DEFAULT_MGMT_KEYS
];
496 struct ieee80211_key
*default_key
;
497 struct ieee80211_key
*default_mgmt_key
;
502 * AP this belongs to: self in AP mode and
503 * corresponding AP in VLAN mode, NULL for
504 * all others (might be needed later in IBSS)
506 struct ieee80211_if_ap
*bss
;
508 /* bitmap of allowed (non-MCS) rate indexes for rate control */
509 u32 rc_rateidx_mask
[IEEE80211_NUM_BANDS
];
512 struct ieee80211_if_ap ap
;
513 struct ieee80211_if_wds wds
;
514 struct ieee80211_if_vlan vlan
;
515 struct ieee80211_if_managed mgd
;
516 struct ieee80211_if_ibss ibss
;
517 #ifdef CONFIG_MAC80211_MESH
518 struct ieee80211_if_mesh mesh
;
523 #ifdef CONFIG_MAC80211_DEBUGFS
526 struct dentry
*default_key
;
527 struct dentry
*default_mgmt_key
;
530 /* must be last, dynamically sized area in this! */
531 struct ieee80211_vif vif
;
535 struct ieee80211_sub_if_data
*vif_to_sdata(struct ieee80211_vif
*p
)
537 return container_of(p
, struct ieee80211_sub_if_data
, vif
);
541 ieee80211_sdata_set_mesh_id(struct ieee80211_sub_if_data
*sdata
,
542 u8 mesh_id_len
, u8
*mesh_id
)
544 #ifdef CONFIG_MAC80211_MESH
545 struct ieee80211_if_mesh
*ifmsh
= &sdata
->u
.mesh
;
546 ifmsh
->mesh_id_len
= mesh_id_len
;
547 memcpy(ifmsh
->mesh_id
, mesh_id
, mesh_id_len
);
554 IEEE80211_RX_MSG
= 1,
555 IEEE80211_TX_STATUS_MSG
= 2,
556 IEEE80211_DELBA_MSG
= 3,
557 IEEE80211_ADDBA_MSG
= 4,
560 enum queue_stop_reason
{
561 IEEE80211_QUEUE_STOP_REASON_DRIVER
,
562 IEEE80211_QUEUE_STOP_REASON_PS
,
563 IEEE80211_QUEUE_STOP_REASON_CSA
,
564 IEEE80211_QUEUE_STOP_REASON_AGGREGATION
,
565 IEEE80211_QUEUE_STOP_REASON_SUSPEND
,
566 IEEE80211_QUEUE_STOP_REASON_SKB_ADD
,
570 * mac80211 scan flags - currently active scan mode
572 * @SCAN_SW_SCANNING: We're currently in the process of scanning but may as
573 * well be on the operating channel
574 * @SCAN_HW_SCANNING: The hardware is scanning for us, we have no way to
575 * determine if we are on the operating channel or not
576 * @SCAN_OFF_CHANNEL: We're off our operating channel for scanning,
577 * gets only set in conjunction with SCAN_SW_SCANNING
586 * enum mac80211_scan_state - scan state machine states
588 * @SCAN_DECISION: Main entry point to the scan state machine, this state
589 * determines if we should keep on scanning or switch back to the
591 * @SCAN_SET_CHANNEL: Set the next channel to be scanned
592 * @SCAN_SEND_PROBE: Send probe requests and wait for probe responses
593 * @SCAN_LEAVE_OPER_CHANNEL: Leave the operating channel, notify the AP
594 * about us leaving the channel and stop all associated STA interfaces
595 * @SCAN_ENTER_OPER_CHANNEL: Enter the operating channel again, notify the
596 * AP about us being back and restart all associated STA interfaces
598 enum mac80211_scan_state
{
602 SCAN_LEAVE_OPER_CHANNEL
,
603 SCAN_ENTER_OPER_CHANNEL
,
606 struct ieee80211_local
{
607 /* embed the driver visible part.
608 * don't cast (use the static inlines below), but we keep
609 * it first anyway so they become a no-op */
610 struct ieee80211_hw hw
;
612 const struct ieee80211_ops
*ops
;
615 * work stuff, potentially off-channel (in the future)
617 struct mutex work_mtx
;
618 struct list_head work_list
;
619 struct timer_list work_timer
;
620 struct work_struct work_work
;
621 struct sk_buff_head work_skb_queue
;
624 * private workqueue to mac80211. mac80211 makes this accessible
625 * via ieee80211_queue_work()
627 struct workqueue_struct
*workqueue
;
629 unsigned long queue_stop_reasons
[IEEE80211_MAX_QUEUES
];
630 /* also used to protect ampdu_ac_queue and amdpu_ac_stop_refcnt */
631 spinlock_t queue_stop_reason_lock
;
634 int monitors
, cooked_mntrs
;
635 /* number of interfaces with corresponding FIF_ flags */
636 int fif_fcsfail
, fif_plcpfail
, fif_control
, fif_other_bss
, fif_pspoll
;
637 unsigned int filter_flags
; /* FIF_* */
639 /* protects the aggregated multicast list and filter calls */
640 spinlock_t filter_lock
;
642 /* used for uploading changed mc list */
643 struct work_struct reconfig_filter
;
645 /* used to reconfigure hardware SM PS */
646 struct work_struct recalc_smps
;
648 /* aggregated multicast list */
649 struct dev_addr_list
*mc_list
;
652 bool tim_in_locked_section
; /* see ieee80211_beacon_get() */
655 * suspended is true if we finished all the suspend _and_ we have
656 * not yet come up from resume. This is to be used by mac80211
657 * to ensure driver sanity during suspend and mac80211's own
658 * sanity. It can eventually be used for WoW as well.
663 * Resuming is true while suspended, but when we're reprogramming the
664 * hardware -- at that time it's allowed to use ieee80211_queue_work()
665 * again even though some other parts of the stack are still suspended
666 * and we still drop received frames to avoid waking the stack.
671 * quiescing is true during the suspend process _only_ to
672 * ease timer cancelling etc.
676 /* device is started */
679 int tx_headroom
; /* required headroom for hardware/radiotap */
681 /* Tasklet and skb queue to process calls from IRQ mode. All frames
682 * added to skb_queue will be processed, but frames in
683 * skb_queue_unreliable may be dropped if the total length of these
684 * queues increases over the limit. */
685 #define IEEE80211_IRQSAFE_QUEUE_LIMIT 128
686 struct tasklet_struct tasklet
;
687 struct sk_buff_head skb_queue
;
688 struct sk_buff_head skb_queue_unreliable
;
692 * The mutex only protects the list and counter,
693 * reads are done in RCU.
694 * Additionally, the lock protects the hash table,
695 * the pending list and each BSS's TIM bitmap.
697 struct mutex sta_mtx
;
699 unsigned long num_sta
;
700 struct list_head sta_list
, sta_pending_list
;
701 struct sta_info
*sta_hash
[STA_HASH_SIZE
];
702 struct timer_list sta_cleanup
;
703 struct work_struct sta_finish_work
;
706 struct sk_buff_head pending
[IEEE80211_MAX_QUEUES
];
707 struct tasklet_struct tx_pending_tasklet
;
710 * This lock is used to prevent concurrent A-MPDU
711 * session start/stop processing, this thus also
712 * synchronises the ->ampdu_action() callback to
713 * drivers and limits it to one at a time.
715 spinlock_t ampdu_lock
;
717 /* number of interfaces with corresponding IFF_ flags */
718 atomic_t iff_allmultis
, iff_promiscs
;
720 struct rate_control_ref
*rate_ctrl
;
722 struct crypto_blkcipher
*wep_tx_tfm
;
723 struct crypto_blkcipher
*wep_rx_tfm
;
727 struct list_head interfaces
;
728 struct mutex iflist_mtx
;
731 * Key lock, protects sdata's key_list and sta_info's
732 * key pointers (write access, they're RCU.)
737 /* Scanning and BSS list */
738 struct mutex scan_mtx
;
739 unsigned long scanning
;
740 struct cfg80211_ssid scan_ssid
;
741 struct cfg80211_scan_request
*int_scan_req
;
742 struct cfg80211_scan_request
*scan_req
, *hw_scan_req
;
743 struct ieee80211_channel
*scan_channel
;
744 enum ieee80211_band hw_scan_band
;
745 int scan_channel_idx
;
748 unsigned long leave_oper_channel_time
;
749 enum mac80211_scan_state next_scan_state
;
750 struct delayed_work scan_work
;
751 struct ieee80211_sub_if_data
*scan_sdata
;
752 enum nl80211_channel_type oper_channel_type
;
753 struct ieee80211_channel
*oper_channel
, *csa_channel
;
755 /* Temporary remain-on-channel for off-channel operations */
756 struct ieee80211_channel
*tmp_channel
;
757 enum nl80211_channel_type tmp_channel_type
;
760 /* dot11CountersTable */
761 u32 dot11TransmittedFragmentCount
;
762 u32 dot11MulticastTransmittedFrameCount
;
763 u32 dot11FailedCount
;
765 u32 dot11MultipleRetryCount
;
766 u32 dot11FrameDuplicateCount
;
767 u32 dot11ReceivedFragmentCount
;
768 u32 dot11MulticastReceivedFrameCount
;
769 u32 dot11TransmittedFrameCount
;
771 #ifdef CONFIG_MAC80211_LEDS
772 int tx_led_counter
, rx_led_counter
;
773 struct led_trigger
*tx_led
, *rx_led
, *assoc_led
, *radio_led
;
774 char tx_led_name
[32], rx_led_name
[32],
775 assoc_led_name
[32], radio_led_name
[32];
778 #ifdef CONFIG_MAC80211_DEBUG_COUNTERS
779 /* TX/RX handler statistics */
780 unsigned int tx_handlers_drop
;
781 unsigned int tx_handlers_queued
;
782 unsigned int tx_handlers_drop_unencrypted
;
783 unsigned int tx_handlers_drop_fragment
;
784 unsigned int tx_handlers_drop_wep
;
785 unsigned int tx_handlers_drop_not_assoc
;
786 unsigned int tx_handlers_drop_unauth_port
;
787 unsigned int rx_handlers_drop
;
788 unsigned int rx_handlers_queued
;
789 unsigned int rx_handlers_drop_nullfunc
;
790 unsigned int rx_handlers_drop_defrag
;
791 unsigned int rx_handlers_drop_short
;
792 unsigned int rx_handlers_drop_passive_scan
;
793 unsigned int tx_expand_skb_head
;
794 unsigned int tx_expand_skb_head_cloned
;
795 unsigned int rx_expand_skb_head
;
796 unsigned int rx_expand_skb_head2
;
797 unsigned int rx_handlers_fragments
;
798 unsigned int tx_status_drop
;
799 #define I802_DEBUG_INC(c) (c)++
800 #else /* CONFIG_MAC80211_DEBUG_COUNTERS */
801 #define I802_DEBUG_INC(c) do { } while (0)
802 #endif /* CONFIG_MAC80211_DEBUG_COUNTERS */
805 int total_ps_buffered
; /* total number of all buffered unicast and
806 * multicast packets for power saving stations
808 int wifi_wme_noack_test
;
809 unsigned int wmm_acm
; /* bit field of ACM bits (BIT(802.1D tag)) */
812 * Bitmask of enabled u-apsd queues,
813 * IEEE80211_WMM_IE_STA_QOSINFO_AC_BE & co. Needs a new association
816 unsigned int uapsd_queues
;
819 * Maximum number of buffered frames AP can deliver during a
820 * service period, IEEE80211_WMM_IE_STA_QOSINFO_SP_ALL or similar.
821 * Needs a new association to take effect.
823 unsigned int uapsd_max_sp_len
;
826 bool offchannel_ps_enabled
;
828 * PS can only be enabled when we have exactly one managed
829 * interface (and monitors) in PS, this then points there.
831 struct ieee80211_sub_if_data
*ps_sdata
;
832 struct work_struct dynamic_ps_enable_work
;
833 struct work_struct dynamic_ps_disable_work
;
834 struct timer_list dynamic_ps_timer
;
835 struct notifier_block network_latency_notifier
;
837 int user_power_level
; /* in dBm */
838 int power_constr_level
; /* in dBm */
840 enum ieee80211_smps_mode smps_mode
;
842 struct work_struct restart_work
;
844 #ifdef CONFIG_MAC80211_DEBUGFS
845 struct local_debugfsdentries
{
846 struct dentry
*rcdir
;
847 struct dentry
*stations
;
853 static inline struct ieee80211_sub_if_data
*
854 IEEE80211_DEV_TO_SUB_IF(struct net_device
*dev
)
856 return netdev_priv(dev
);
859 /* this struct represents 802.11n's RA/TID combination along with our vif */
860 struct ieee80211_ra_tid
{
861 struct ieee80211_vif
*vif
;
866 /* Parsed Information Elements */
867 struct ieee802_11_elems
{
871 /* pointers to IEs */
877 struct ieee80211_tim_ie
*tim
;
886 struct ieee80211_ht_cap
*ht_cap_elem
;
887 struct ieee80211_ht_info
*ht_info_elem
;
888 struct ieee80211_meshconf_ie
*mesh_config
;
894 struct ieee80211_rann_ie
*rann
;
898 u8
*quiet_elem
; /* first quite element */
901 /* length of them, respectively */
913 u8 ext_supp_rates_len
;
921 u8 ch_switch_elem_len
;
923 u8 pwr_constr_elem_len
;
925 u8 num_of_quiet_elem
; /* can be more the one */
929 static inline struct ieee80211_local
*hw_to_local(
930 struct ieee80211_hw
*hw
)
932 return container_of(hw
, struct ieee80211_local
, hw
);
935 static inline struct ieee80211_hw
*local_to_hw(
936 struct ieee80211_local
*local
)
942 static inline int ieee80211_bssid_match(const u8
*raddr
, const u8
*addr
)
944 return compare_ether_addr(raddr
, addr
) == 0 ||
945 is_broadcast_ether_addr(raddr
);
949 int ieee80211_hw_config(struct ieee80211_local
*local
, u32 changed
);
950 void ieee80211_tx_set_protected(struct ieee80211_tx_data
*tx
);
951 void ieee80211_bss_info_change_notify(struct ieee80211_sub_if_data
*sdata
,
953 void ieee80211_configure_filter(struct ieee80211_local
*local
);
954 u32
ieee80211_reset_erp_info(struct ieee80211_sub_if_data
*sdata
);
956 extern bool ieee80211_disable_40mhz_24ghz
;
959 void ieee80211_sta_setup_sdata(struct ieee80211_sub_if_data
*sdata
);
960 int ieee80211_mgd_auth(struct ieee80211_sub_if_data
*sdata
,
961 struct cfg80211_auth_request
*req
);
962 int ieee80211_mgd_assoc(struct ieee80211_sub_if_data
*sdata
,
963 struct cfg80211_assoc_request
*req
);
964 int ieee80211_mgd_deauth(struct ieee80211_sub_if_data
*sdata
,
965 struct cfg80211_deauth_request
*req
,
967 int ieee80211_mgd_disassoc(struct ieee80211_sub_if_data
*sdata
,
968 struct cfg80211_disassoc_request
*req
,
970 int ieee80211_mgd_action(struct ieee80211_sub_if_data
*sdata
,
971 struct ieee80211_channel
*chan
,
972 enum nl80211_channel_type channel_type
,
973 const u8
*buf
, size_t len
, u64
*cookie
);
974 ieee80211_rx_result
ieee80211_sta_rx_mgmt(struct ieee80211_sub_if_data
*sdata
,
975 struct sk_buff
*skb
);
976 void ieee80211_send_pspoll(struct ieee80211_local
*local
,
977 struct ieee80211_sub_if_data
*sdata
);
978 void ieee80211_recalc_ps(struct ieee80211_local
*local
, s32 latency
);
979 int ieee80211_max_network_latency(struct notifier_block
*nb
,
980 unsigned long data
, void *dummy
);
981 void ieee80211_sta_process_chanswitch(struct ieee80211_sub_if_data
*sdata
,
982 struct ieee80211_channel_sw_ie
*sw_elem
,
983 struct ieee80211_bss
*bss
);
984 void ieee80211_sta_quiesce(struct ieee80211_sub_if_data
*sdata
);
985 void ieee80211_sta_restart(struct ieee80211_sub_if_data
*sdata
);
988 void ieee80211_ibss_notify_scan_completed(struct ieee80211_local
*local
);
989 void ieee80211_ibss_setup_sdata(struct ieee80211_sub_if_data
*sdata
);
991 ieee80211_ibss_rx_mgmt(struct ieee80211_sub_if_data
*sdata
, struct sk_buff
*skb
);
992 struct sta_info
*ieee80211_ibss_add_sta(struct ieee80211_sub_if_data
*sdata
,
993 u8
*bssid
, u8
*addr
, u32 supp_rates
,
995 int ieee80211_ibss_join(struct ieee80211_sub_if_data
*sdata
,
996 struct cfg80211_ibss_params
*params
);
997 int ieee80211_ibss_leave(struct ieee80211_sub_if_data
*sdata
);
998 void ieee80211_ibss_quiesce(struct ieee80211_sub_if_data
*sdata
);
999 void ieee80211_ibss_restart(struct ieee80211_sub_if_data
*sdata
);
1001 /* scan/BSS handling */
1002 void ieee80211_scan_work(struct work_struct
*work
);
1003 int ieee80211_request_internal_scan(struct ieee80211_sub_if_data
*sdata
,
1004 const u8
*ssid
, u8 ssid_len
);
1005 int ieee80211_request_scan(struct ieee80211_sub_if_data
*sdata
,
1006 struct cfg80211_scan_request
*req
);
1007 void ieee80211_scan_cancel(struct ieee80211_local
*local
);
1009 ieee80211_scan_rx(struct ieee80211_sub_if_data
*sdata
, struct sk_buff
*skb
);
1011 void ieee80211_mlme_notify_scan_completed(struct ieee80211_local
*local
);
1012 struct ieee80211_bss
*
1013 ieee80211_bss_info_update(struct ieee80211_local
*local
,
1014 struct ieee80211_rx_status
*rx_status
,
1015 struct ieee80211_mgmt
*mgmt
,
1017 struct ieee802_11_elems
*elems
,
1018 struct ieee80211_channel
*channel
,
1020 struct ieee80211_bss
*
1021 ieee80211_rx_bss_get(struct ieee80211_local
*local
, u8
*bssid
, int freq
,
1022 u8
*ssid
, u8 ssid_len
);
1023 void ieee80211_rx_bss_put(struct ieee80211_local
*local
,
1024 struct ieee80211_bss
*bss
);
1026 /* off-channel helpers */
1027 void ieee80211_offchannel_stop_beaconing(struct ieee80211_local
*local
);
1028 void ieee80211_offchannel_stop_station(struct ieee80211_local
*local
);
1029 void ieee80211_offchannel_return(struct ieee80211_local
*local
,
1030 bool enable_beaconing
);
1032 /* interface handling */
1033 int ieee80211_iface_init(void);
1034 void ieee80211_iface_exit(void);
1035 int ieee80211_if_add(struct ieee80211_local
*local
, const char *name
,
1036 struct net_device
**new_dev
, enum nl80211_iftype type
,
1037 struct vif_params
*params
);
1038 int ieee80211_if_change_type(struct ieee80211_sub_if_data
*sdata
,
1039 enum nl80211_iftype type
);
1040 void ieee80211_if_remove(struct ieee80211_sub_if_data
*sdata
);
1041 void ieee80211_remove_interfaces(struct ieee80211_local
*local
);
1042 u32
__ieee80211_recalc_idle(struct ieee80211_local
*local
);
1043 void ieee80211_recalc_idle(struct ieee80211_local
*local
);
1045 static inline bool ieee80211_sdata_running(struct ieee80211_sub_if_data
*sdata
)
1047 return netif_running(sdata
->dev
);
1051 void ieee80211_clear_tx_pending(struct ieee80211_local
*local
);
1052 void ieee80211_tx_pending(unsigned long data
);
1053 netdev_tx_t
ieee80211_monitor_start_xmit(struct sk_buff
*skb
,
1054 struct net_device
*dev
);
1055 netdev_tx_t
ieee80211_subif_start_xmit(struct sk_buff
*skb
,
1056 struct net_device
*dev
);
1059 * radiotap header for status frames
1061 struct ieee80211_tx_status_rtap_hdr
{
1062 struct ieee80211_radiotap_header hdr
;
1064 u8 padding_for_rate
;
1067 } __attribute__ ((packed
));
1071 void ieee80211_ht_cap_ie_to_sta_ht_cap(struct ieee80211_supported_band
*sband
,
1072 struct ieee80211_ht_cap
*ht_cap_ie
,
1073 struct ieee80211_sta_ht_cap
*ht_cap
);
1074 void ieee80211_send_bar(struct ieee80211_sub_if_data
*sdata
, u8
*ra
, u16 tid
, u16 ssn
);
1075 void ieee80211_send_delba(struct ieee80211_sub_if_data
*sdata
,
1076 const u8
*da
, u16 tid
,
1077 u16 initiator
, u16 reason_code
);
1078 int ieee80211_send_smps_action(struct ieee80211_sub_if_data
*sdata
,
1079 enum ieee80211_smps_mode smps
, const u8
*da
,
1082 void ieee80211_sta_stop_rx_ba_session(struct ieee80211_sub_if_data
*sdata
, u8
*da
,
1083 u16 tid
, u16 initiator
, u16 reason
);
1084 void __ieee80211_stop_rx_ba_session(struct sta_info
*sta
, u16 tid
,
1085 u16 initiator
, u16 reason
);
1086 void ieee80211_sta_tear_down_BA_sessions(struct sta_info
*sta
);
1087 void ieee80211_process_delba(struct ieee80211_sub_if_data
*sdata
,
1088 struct sta_info
*sta
,
1089 struct ieee80211_mgmt
*mgmt
, size_t len
);
1090 void ieee80211_process_addba_resp(struct ieee80211_local
*local
,
1091 struct sta_info
*sta
,
1092 struct ieee80211_mgmt
*mgmt
,
1094 void ieee80211_process_addba_request(struct ieee80211_local
*local
,
1095 struct sta_info
*sta
,
1096 struct ieee80211_mgmt
*mgmt
,
1099 int __ieee80211_stop_tx_ba_session(struct sta_info
*sta
, u16 tid
,
1100 enum ieee80211_back_parties initiator
);
1101 int ___ieee80211_stop_tx_ba_session(struct sta_info
*sta
, u16 tid
,
1102 enum ieee80211_back_parties initiator
);
1104 /* Spectrum management */
1105 void ieee80211_process_measurement_req(struct ieee80211_sub_if_data
*sdata
,
1106 struct ieee80211_mgmt
*mgmt
,
1109 /* Suspend/resume and hw reconfiguration */
1110 int ieee80211_reconfig(struct ieee80211_local
*local
);
1111 void ieee80211_stop_device(struct ieee80211_local
*local
);
1114 int __ieee80211_suspend(struct ieee80211_hw
*hw
);
1116 static inline int __ieee80211_resume(struct ieee80211_hw
*hw
)
1118 return ieee80211_reconfig(hw_to_local(hw
));
1121 static inline int __ieee80211_suspend(struct ieee80211_hw
*hw
)
1126 static inline int __ieee80211_resume(struct ieee80211_hw
*hw
)
1132 /* utility functions/constants */
1133 extern void *mac80211_wiphy_privid
; /* for wiphy privid */
1134 u8
*ieee80211_get_bssid(struct ieee80211_hdr
*hdr
, size_t len
,
1135 enum nl80211_iftype type
);
1136 int ieee80211_frame_duration(struct ieee80211_local
*local
, size_t len
,
1137 int rate
, int erp
, int short_preamble
);
1138 void mac80211_ev_michael_mic_failure(struct ieee80211_sub_if_data
*sdata
, int keyidx
,
1139 struct ieee80211_hdr
*hdr
, const u8
*tsc
,
1141 void ieee80211_set_wmm_default(struct ieee80211_sub_if_data
*sdata
);
1142 void ieee80211_tx_skb(struct ieee80211_sub_if_data
*sdata
, struct sk_buff
*skb
);
1143 void ieee802_11_parse_elems(u8
*start
, size_t len
,
1144 struct ieee802_11_elems
*elems
);
1145 u32
ieee802_11_parse_elems_crc(u8
*start
, size_t len
,
1146 struct ieee802_11_elems
*elems
,
1147 u64 filter
, u32 crc
);
1148 u32
ieee80211_mandatory_rates(struct ieee80211_local
*local
,
1149 enum ieee80211_band band
);
1151 void ieee80211_dynamic_ps_enable_work(struct work_struct
*work
);
1152 void ieee80211_dynamic_ps_disable_work(struct work_struct
*work
);
1153 void ieee80211_dynamic_ps_timer(unsigned long data
);
1154 void ieee80211_send_nullfunc(struct ieee80211_local
*local
,
1155 struct ieee80211_sub_if_data
*sdata
,
1157 void ieee80211_sta_rx_notify(struct ieee80211_sub_if_data
*sdata
,
1158 struct ieee80211_hdr
*hdr
);
1159 void ieee80211_beacon_connection_loss_work(struct work_struct
*work
);
1161 void ieee80211_wake_queues_by_reason(struct ieee80211_hw
*hw
,
1162 enum queue_stop_reason reason
);
1163 void ieee80211_stop_queues_by_reason(struct ieee80211_hw
*hw
,
1164 enum queue_stop_reason reason
);
1165 void ieee80211_wake_queue_by_reason(struct ieee80211_hw
*hw
, int queue
,
1166 enum queue_stop_reason reason
);
1167 void ieee80211_stop_queue_by_reason(struct ieee80211_hw
*hw
, int queue
,
1168 enum queue_stop_reason reason
);
1169 void ieee80211_add_pending_skb(struct ieee80211_local
*local
,
1170 struct sk_buff
*skb
);
1171 int ieee80211_add_pending_skbs(struct ieee80211_local
*local
,
1172 struct sk_buff_head
*skbs
);
1174 void ieee80211_send_auth(struct ieee80211_sub_if_data
*sdata
,
1175 u16 transaction
, u16 auth_alg
,
1176 u8
*extra
, size_t extra_len
, const u8
*bssid
,
1177 const u8
*key
, u8 key_len
, u8 key_idx
);
1178 int ieee80211_build_preq_ies(struct ieee80211_local
*local
, u8
*buffer
,
1179 const u8
*ie
, size_t ie_len
,
1180 enum ieee80211_band band
);
1181 void ieee80211_send_probe_req(struct ieee80211_sub_if_data
*sdata
, u8
*dst
,
1182 const u8
*ssid
, size_t ssid_len
,
1183 const u8
*ie
, size_t ie_len
);
1185 void ieee80211_sta_def_wmm_params(struct ieee80211_sub_if_data
*sdata
,
1186 const size_t supp_rates_len
,
1187 const u8
*supp_rates
);
1188 u32
ieee80211_sta_get_rates(struct ieee80211_local
*local
,
1189 struct ieee802_11_elems
*elems
,
1190 enum ieee80211_band band
);
1191 int __ieee80211_request_smps(struct ieee80211_sub_if_data
*sdata
,
1192 enum ieee80211_smps_mode smps_mode
);
1193 void ieee80211_recalc_smps(struct ieee80211_local
*local
,
1194 struct ieee80211_sub_if_data
*forsdata
);
1196 size_t ieee80211_ie_split(const u8
*ies
, size_t ielen
,
1197 const u8
*ids
, int n_ids
, size_t offset
);
1198 size_t ieee80211_ie_split_vendor(const u8
*ies
, size_t ielen
, size_t offset
);
1200 /* internal work items */
1201 void ieee80211_work_init(struct ieee80211_local
*local
);
1202 void ieee80211_add_work(struct ieee80211_work
*wk
);
1203 void free_work(struct ieee80211_work
*wk
);
1204 void ieee80211_work_purge(struct ieee80211_sub_if_data
*sdata
);
1205 ieee80211_rx_result
ieee80211_work_rx_mgmt(struct ieee80211_sub_if_data
*sdata
,
1206 struct sk_buff
*skb
);
1207 int ieee80211_wk_remain_on_channel(struct ieee80211_sub_if_data
*sdata
,
1208 struct ieee80211_channel
*chan
,
1209 enum nl80211_channel_type channel_type
,
1210 unsigned int duration
, u64
*cookie
);
1211 int ieee80211_wk_cancel_remain_on_channel(
1212 struct ieee80211_sub_if_data
*sdata
, u64 cookie
);
1214 #ifdef CONFIG_MAC80211_NOINLINE
1215 #define debug_noinline noinline
1217 #define debug_noinline
1220 #endif /* IEEE80211_I_H */