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 <linux/leds.h>
27 #include <linux/idr.h>
28 #include <net/ieee80211_radiotap.h>
29 #include <net/cfg80211.h>
30 #include <net/mac80211.h>
34 struct ieee80211_local
;
36 /* Maximum number of broadcast/multicast frames to buffer when some of the
37 * associated stations are using power saving. */
38 #define AP_MAX_BC_BUFFER 128
40 /* Maximum number of frames buffered to all STAs, including multicast frames.
41 * Note: increasing this limit increases the potential memory requirement. Each
42 * frame can be up to about 2 kB long. */
43 #define TOTAL_MAX_TX_BUFFER 512
45 /* Required encryption head and tailroom */
46 #define IEEE80211_ENCRYPT_HEADROOM 8
47 #define IEEE80211_ENCRYPT_TAILROOM 18
49 /* IEEE 802.11 (Ch. 9.5 Defragmentation) requires support for concurrent
50 * reception of at least three fragmented frames. This limit can be increased
51 * by changing this define, at the cost of slower frame reassembly and
52 * increased memory use (about 2 kB of RAM per entry). */
53 #define IEEE80211_FRAGMENT_MAX 4
55 #define TU_TO_EXP_TIME(x) (jiffies + usecs_to_jiffies((x) * 1024))
57 #define IEEE80211_DEFAULT_UAPSD_QUEUES \
58 (IEEE80211_WMM_IE_STA_QOSINFO_AC_BK | \
59 IEEE80211_WMM_IE_STA_QOSINFO_AC_BE | \
60 IEEE80211_WMM_IE_STA_QOSINFO_AC_VI | \
61 IEEE80211_WMM_IE_STA_QOSINFO_AC_VO)
63 #define IEEE80211_DEFAULT_MAX_SP_LEN \
64 IEEE80211_WMM_IE_STA_QOSINFO_SP_ALL
66 struct ieee80211_fragment_entry
{
67 unsigned long first_frag_time
;
69 unsigned int rx_queue
;
70 unsigned int last_frag
;
71 unsigned int extra_len
;
72 struct sk_buff_head skb_list
;
73 int ccmp
; /* Whether fragments were encrypted with CCMP */
74 u8 last_pn
[6]; /* PN of the last fragment if CCMP was used */
78 struct ieee80211_bss
{
79 /* don't want to look up all the time */
81 u8 ssid
[IEEE80211_MAX_SSID_LEN
];
88 unsigned long last_probe_resp
;
90 #ifdef CONFIG_MAC80211_MESH
96 #define IEEE80211_MAX_SUPP_RATES 32
97 u8 supp_rates
[IEEE80211_MAX_SUPP_RATES
];
98 size_t supp_rates_len
;
101 * During association, we save an ERP value from a probe response so
102 * that we can feed ERP info to the driver when handling the
103 * association completes. these fields probably won't be up-to-date
104 * otherwise, you probably don't want to use them.
109 /* Keep track of the corruption of the last beacon/probe response. */
112 /* Keep track of what bits of information we have valid info for. */
117 * enum ieee80211_corrupt_data_flags - BSS data corruption flags
118 * @IEEE80211_BSS_CORRUPT_BEACON: last beacon frame received was corrupted
119 * @IEEE80211_BSS_CORRUPT_PROBE_RESP: last probe response received was corrupted
121 * These are bss flags that are attached to a bss in the
122 * @corrupt_data field of &struct ieee80211_bss.
124 enum ieee80211_bss_corrupt_data_flags
{
125 IEEE80211_BSS_CORRUPT_BEACON
= BIT(0),
126 IEEE80211_BSS_CORRUPT_PROBE_RESP
= BIT(1)
130 * enum ieee80211_valid_data_flags - BSS valid data flags
131 * @IEEE80211_BSS_VALID_DTIM: DTIM data was gathered from non-corrupt IE
132 * @IEEE80211_BSS_VALID_WMM: WMM/UAPSD data was gathered from non-corrupt IE
133 * @IEEE80211_BSS_VALID_RATES: Supported rates were gathered from non-corrupt IE
134 * @IEEE80211_BSS_VALID_ERP: ERP flag was gathered from non-corrupt IE
136 * These are bss flags that are attached to a bss in the
137 * @valid_data field of &struct ieee80211_bss. They show which parts
138 * of the data structure were recieved as a result of an un-corrupted
139 * beacon/probe response.
141 enum ieee80211_bss_valid_data_flags
{
142 IEEE80211_BSS_VALID_DTIM
= BIT(0),
143 IEEE80211_BSS_VALID_WMM
= BIT(1),
144 IEEE80211_BSS_VALID_RATES
= BIT(2),
145 IEEE80211_BSS_VALID_ERP
= BIT(3)
148 static inline u8
*bss_mesh_cfg(struct ieee80211_bss
*bss
)
150 #ifdef CONFIG_MAC80211_MESH
151 return bss
->mesh_cfg
;
156 static inline u8
*bss_mesh_id(struct ieee80211_bss
*bss
)
158 #ifdef CONFIG_MAC80211_MESH
164 static inline u8
bss_mesh_id_len(struct ieee80211_bss
*bss
)
166 #ifdef CONFIG_MAC80211_MESH
167 return bss
->mesh_id_len
;
173 typedef unsigned __bitwise__ ieee80211_tx_result
;
174 #define TX_CONTINUE ((__force ieee80211_tx_result) 0u)
175 #define TX_DROP ((__force ieee80211_tx_result) 1u)
176 #define TX_QUEUED ((__force ieee80211_tx_result) 2u)
178 #define IEEE80211_TX_UNICAST BIT(1)
179 #define IEEE80211_TX_PS_BUFFERED BIT(2)
181 struct ieee80211_tx_data
{
183 struct sk_buff_head skbs
;
184 struct ieee80211_local
*local
;
185 struct ieee80211_sub_if_data
*sdata
;
186 struct sta_info
*sta
;
187 struct ieee80211_key
*key
;
189 struct ieee80211_channel
*channel
;
195 typedef unsigned __bitwise__ ieee80211_rx_result
;
196 #define RX_CONTINUE ((__force ieee80211_rx_result) 0u)
197 #define RX_DROP_UNUSABLE ((__force ieee80211_rx_result) 1u)
198 #define RX_DROP_MONITOR ((__force ieee80211_rx_result) 2u)
199 #define RX_QUEUED ((__force ieee80211_rx_result) 3u)
202 * enum ieee80211_packet_rx_flags - packet RX flags
203 * @IEEE80211_RX_RA_MATCH: frame is destined to interface currently processed
204 * (incl. multicast frames)
205 * @IEEE80211_RX_IN_SCAN: received while scanning
206 * @IEEE80211_RX_FRAGMENTED: fragmented frame
207 * @IEEE80211_RX_AMSDU: a-MSDU packet
208 * @IEEE80211_RX_MALFORMED_ACTION_FRM: action frame is malformed
209 * @IEEE80211_RX_DEFERRED_RELEASE: frame was subjected to receive reordering
211 * These are per-frame flags that are attached to a frame in the
212 * @rx_flags field of &struct ieee80211_rx_status.
214 enum ieee80211_packet_rx_flags
{
215 IEEE80211_RX_IN_SCAN
= BIT(0),
216 IEEE80211_RX_RA_MATCH
= BIT(1),
217 IEEE80211_RX_FRAGMENTED
= BIT(2),
218 IEEE80211_RX_AMSDU
= BIT(3),
219 IEEE80211_RX_MALFORMED_ACTION_FRM
= BIT(4),
220 IEEE80211_RX_DEFERRED_RELEASE
= BIT(5),
224 * enum ieee80211_rx_flags - RX data flags
226 * @IEEE80211_RX_CMNTR: received on cooked monitor already
227 * @IEEE80211_RX_BEACON_REPORTED: This frame was already reported
228 * to cfg80211_report_obss_beacon().
230 * These flags are used across handling multiple interfaces
231 * for a single frame.
233 enum ieee80211_rx_flags
{
234 IEEE80211_RX_CMNTR
= BIT(0),
235 IEEE80211_RX_BEACON_REPORTED
= BIT(1),
238 struct ieee80211_rx_data
{
240 struct ieee80211_local
*local
;
241 struct ieee80211_sub_if_data
*sdata
;
242 struct sta_info
*sta
;
243 struct ieee80211_key
*key
;
248 * Index into sequence numbers array, 0..16
249 * since the last (16) is used for non-QoS,
250 * will be 16 on non-QoS frames.
255 * Index into the security IV/PN arrays, 0..16
256 * since the last (16) is used for CCMP-encrypted
257 * management frames, will be set to 16 on mgmt
258 * frames and 0 on non-QoS frames.
268 int head_len
, tail_len
;
269 struct rcu_head rcu_head
;
272 struct ieee80211_if_ap
{
273 struct beacon_data __rcu
*beacon
;
274 struct sk_buff __rcu
*probe_resp
;
276 struct list_head vlans
;
278 /* yes, this looks ugly, but guarantees that we can later use
280 * NB: don't touch this bitmap, use sta_info_{set,clear}_tim_bit */
281 u8 tim
[sizeof(unsigned long) * BITS_TO_LONGS(IEEE80211_MAX_AID
+ 1)];
282 struct sk_buff_head ps_bc_buf
;
283 atomic_t num_sta_ps
; /* number of stations in PS mode */
284 atomic_t num_sta_authorized
; /* number of authorized stations */
289 struct ieee80211_if_wds
{
290 struct sta_info
*sta
;
291 u8 remote_addr
[ETH_ALEN
];
294 struct ieee80211_if_vlan
{
295 struct list_head list
;
297 /* used for all tx if the VLAN is configured to 4-addr mode */
298 struct sta_info __rcu
*sta
;
302 __u32 fwded_mcast
; /* Mesh forwarded multicast frames */
303 __u32 fwded_unicast
; /* Mesh forwarded unicast frames */
304 __u32 fwded_frames
; /* Mesh total forwarded frames */
305 __u32 dropped_frames_ttl
; /* Not transmitted since mesh_ttl == 0*/
306 __u32 dropped_frames_no_route
; /* Not transmitted, no route found */
307 __u32 dropped_frames_congestion
;/* Not forwarded due to congestion */
308 atomic_t estab_plinks
;
311 #define PREQ_Q_F_START 0x1
312 #define PREQ_Q_F_REFRESH 0x2
313 struct mesh_preq_queue
{
314 struct list_head list
;
319 enum ieee80211_work_type
{
320 IEEE80211_WORK_ABORT
,
321 IEEE80211_WORK_REMAIN_ON_CHANNEL
,
322 IEEE80211_WORK_OFFCHANNEL_TX
,
326 * enum work_done_result - indicates what to do after work was done
328 * @WORK_DONE_DESTROY: This work item is no longer needed, destroy.
329 * @WORK_DONE_REQUEUE: This work item was reset to be reused, and
330 * should be requeued.
332 enum work_done_result
{
337 struct ieee80211_work
{
338 struct list_head list
;
340 struct rcu_head rcu_head
;
342 struct ieee80211_sub_if_data
*sdata
;
344 enum work_done_result (*done
)(struct ieee80211_work
*wk
,
345 struct sk_buff
*skb
);
347 struct ieee80211_channel
*chan
;
348 enum nl80211_channel_type chan_type
;
350 unsigned long timeout
;
351 enum ieee80211_work_type type
;
360 struct sk_buff
*frame
;
370 /* flags used in struct ieee80211_if_managed.flags */
371 enum ieee80211_sta_flags
{
372 IEEE80211_STA_BEACON_POLL
= BIT(0),
373 IEEE80211_STA_CONNECTION_POLL
= BIT(1),
374 IEEE80211_STA_CONTROL_PORT
= BIT(2),
375 IEEE80211_STA_DISABLE_11N
= BIT(4),
376 IEEE80211_STA_CSA_RECEIVED
= BIT(5),
377 IEEE80211_STA_MFP_ENABLED
= BIT(6),
378 IEEE80211_STA_UAPSD_ENABLED
= BIT(7),
379 IEEE80211_STA_NULLFUNC_ACKED
= BIT(8),
380 IEEE80211_STA_RESET_SIGNAL_AVE
= BIT(9),
383 struct ieee80211_mgd_auth_data
{
384 struct cfg80211_bss
*bss
;
385 unsigned long timeout
;
387 u16 algorithm
, expected_transaction
;
389 u8 key
[WLAN_KEY_LEN_WEP104
];
398 struct ieee80211_mgd_assoc_data
{
399 struct cfg80211_bss
*bss
;
400 const u8
*supp_rates
;
401 const u8
*ht_information_ie
;
403 unsigned long timeout
;
407 u8 prev_bssid
[ETH_ALEN
];
408 u8 ssid
[IEEE80211_MAX_SSID_LEN
];
411 bool wmm_used
, uapsd_used
;
420 struct ieee80211_if_managed
{
421 struct timer_list timer
;
422 struct timer_list conn_mon_timer
;
423 struct timer_list bcn_mon_timer
;
424 struct timer_list chswitch_timer
;
425 struct work_struct monitor_work
;
426 struct work_struct chswitch_work
;
427 struct work_struct beacon_connection_loss_work
;
429 unsigned long beacon_timeout
;
430 unsigned long probe_timeout
;
431 int probe_send_count
;
432 bool nullfunc_failed
;
435 struct cfg80211_bss
*associated
;
436 struct ieee80211_mgd_auth_data
*auth_data
;
437 struct ieee80211_mgd_assoc_data
*assoc_data
;
443 unsigned long timers_running
; /* used for quiesce/restart */
444 bool powersave
; /* powersave requested for this iface */
445 bool broken_ap
; /* AP is broken -- turn off powersave */
446 enum ieee80211_smps_mode req_smps
, /* requested smps mode */
447 ap_smps
, /* smps mode AP thinks we're in */
448 driver_smps_mode
; /* smps mode request */
450 struct work_struct request_smps_work
;
454 bool beacon_crc_valid
;
458 IEEE80211_MFP_DISABLED
,
459 IEEE80211_MFP_OPTIONAL
,
460 IEEE80211_MFP_REQUIRED
461 } mfp
; /* management frame protection */
463 int wmm_last_param_set
;
467 /* Signal strength from the last Beacon frame in the current BSS. */
468 int last_beacon_signal
;
471 * Weighted average of the signal strength from Beacon frames in the
472 * current BSS. This is in units of 1/16 of the signal unit to maintain
473 * accuracy and to speed up calculations, i.e., the value need to be
474 * divided by 16 to get the actual value.
476 int ave_beacon_signal
;
479 * Number of Beacon frames used in ave_beacon_signal. This can be used
480 * to avoid generating less reliable cqm events that would be based
481 * only on couple of received frames.
483 unsigned int count_beacon_signal
;
486 * Last Beacon frame signal strength average (ave_beacon_signal / 16)
487 * that triggered a cqm event. 0 indicates that no event has been
488 * generated for the current association.
490 int last_cqm_event_signal
;
493 * State variables for keeping track of RSSI of the AP currently
494 * connected to and informing driver when RSSI has gone
495 * below/above a certain threshold.
497 int rssi_min_thold
, rssi_max_thold
;
498 int last_ave_beacon_signal
;
500 struct ieee80211_ht_cap ht_capa
; /* configured ht-cap over-rides */
501 struct ieee80211_ht_cap ht_capa_mask
; /* Valid parts of ht_capa */
504 struct ieee80211_if_ibss
{
505 struct timer_list timer
;
509 unsigned long last_scan_completed
;
521 u8 bssid
[ETH_ALEN
] __aligned(2);
522 u8 ssid
[IEEE80211_MAX_SSID_LEN
];
525 struct ieee80211_channel
*channel
;
526 enum nl80211_channel_type channel_type
;
528 unsigned long ibss_join_req
;
529 /* probe response/beacon for IBSS */
530 struct sk_buff __rcu
*presp
;
533 spinlock_t incomplete_lock
;
534 struct list_head incomplete_stations
;
537 IEEE80211_IBSS_MLME_SEARCH
,
538 IEEE80211_IBSS_MLME_JOINED
,
542 struct ieee80211_if_mesh
{
543 struct timer_list housekeeping_timer
;
544 struct timer_list mesh_path_timer
;
545 struct timer_list mesh_path_root_timer
;
547 unsigned long timers_running
;
549 unsigned long wrkq_flags
;
551 u8 mesh_id
[IEEE80211_MAX_MESH_ID_LEN
];
553 /* Active Path Selection Protocol Identifier */
555 /* Active Path Selection Metric Identifier */
557 /* Congestion Control Mode Identifier */
559 /* Synchronization Protocol Identifier */
561 /* Authentication Protocol Identifier */
563 /* Local mesh Sequence Number */
565 /* Last used PREQ ID */
568 /* Timestamp of last SN update */
569 unsigned long last_sn_update
;
570 /* Time when it's ok to send next PERR */
571 unsigned long next_perr
;
572 /* Timestamp of last PREQ sent */
573 unsigned long last_preq
;
574 struct mesh_rmc
*rmc
;
575 spinlock_t mesh_preq_queue_lock
;
576 struct mesh_preq_queue preq_queue
;
578 struct mesh_stats mshstats
;
579 struct mesh_config mshcfg
;
581 bool accepting_plinks
;
586 IEEE80211_MESH_SEC_NONE
= 0x0,
587 IEEE80211_MESH_SEC_AUTHED
= 0x1,
588 IEEE80211_MESH_SEC_SECURED
= 0x2,
592 #ifdef CONFIG_MAC80211_MESH
593 #define IEEE80211_IFSTA_MESH_CTR_INC(msh, name) \
594 do { (msh)->mshstats.name++; } while (0)
596 #define IEEE80211_IFSTA_MESH_CTR_INC(msh, name) \
601 * enum ieee80211_sub_if_data_flags - virtual interface flags
603 * @IEEE80211_SDATA_ALLMULTI: interface wants all multicast packets
604 * @IEEE80211_SDATA_PROMISC: interface is promisc
605 * @IEEE80211_SDATA_OPERATING_GMODE: operating in G-only mode
606 * @IEEE80211_SDATA_DONT_BRIDGE_PACKETS: bridge packets between
607 * associated stations and deliver multicast frames both
608 * back to wireless media and to the local net stack.
609 * @IEEE80211_SDATA_DISCONNECT_RESUME: Disconnect after resume.
610 * @IEEE80211_SDATA_IN_DRIVER: indicates interface was added to driver
612 enum ieee80211_sub_if_data_flags
{
613 IEEE80211_SDATA_ALLMULTI
= BIT(0),
614 IEEE80211_SDATA_PROMISC
= BIT(1),
615 IEEE80211_SDATA_OPERATING_GMODE
= BIT(2),
616 IEEE80211_SDATA_DONT_BRIDGE_PACKETS
= BIT(3),
617 IEEE80211_SDATA_DISCONNECT_RESUME
= BIT(4),
618 IEEE80211_SDATA_IN_DRIVER
= BIT(5),
622 * enum ieee80211_sdata_state_bits - virtual interface state bits
623 * @SDATA_STATE_RUNNING: virtual interface is up & running; this
624 * mirrors netif_running() but is separate for interface type
625 * change handling while the interface is up
626 * @SDATA_STATE_OFFCHANNEL: This interface is currently in offchannel
627 * mode, so queues are stopped
629 enum ieee80211_sdata_state_bits
{
631 SDATA_STATE_OFFCHANNEL
,
634 struct ieee80211_sub_if_data
{
635 struct list_head list
;
637 struct wireless_dev wdev
;
640 struct list_head key_list
;
642 /* count for keys needing tailroom space allocation */
643 int crypto_tx_tailroom_needed_cnt
;
645 struct net_device
*dev
;
646 struct ieee80211_local
*local
;
652 int drop_unencrypted
;
657 * keep track of whether the HT opmode (stored in
658 * vif.bss_info.ht_operation_mode) is valid.
660 bool ht_opmode_valid
;
662 /* to detect idle changes */
665 /* Fragment table for host-based reassembly */
666 struct ieee80211_fragment_entry fragments
[IEEE80211_FRAGMENT_MAX
];
667 unsigned int fragment_next
;
669 /* TID bitmap for NoAck policy */
672 struct ieee80211_key __rcu
*keys
[NUM_DEFAULT_KEYS
+ NUM_DEFAULT_MGMT_KEYS
];
673 struct ieee80211_key __rcu
*default_unicast_key
;
674 struct ieee80211_key __rcu
*default_multicast_key
;
675 struct ieee80211_key __rcu
*default_mgmt_key
;
678 __be16 control_port_protocol
;
679 bool control_port_no_encrypt
;
681 struct ieee80211_tx_queue_params tx_conf
[IEEE80211_MAX_QUEUES
];
683 struct work_struct work
;
684 struct sk_buff_head skb_queue
;
686 bool arp_filter_state
;
689 * AP this belongs to: self in AP mode and
690 * corresponding AP in VLAN mode, NULL for
691 * all others (might be needed later in IBSS)
693 struct ieee80211_if_ap
*bss
;
695 /* bitmap of allowed (non-MCS) rate indexes for rate control */
696 u32 rc_rateidx_mask
[IEEE80211_NUM_BANDS
];
697 u8 rc_rateidx_mcs_mask
[IEEE80211_NUM_BANDS
][IEEE80211_HT_MCS_MASK_LEN
];
700 struct ieee80211_if_ap ap
;
701 struct ieee80211_if_wds wds
;
702 struct ieee80211_if_vlan vlan
;
703 struct ieee80211_if_managed mgd
;
704 struct ieee80211_if_ibss ibss
;
705 struct ieee80211_if_mesh mesh
;
709 #ifdef CONFIG_MAC80211_DEBUGFS
712 struct dentry
*subdir_stations
;
713 struct dentry
*default_unicast_key
;
714 struct dentry
*default_multicast_key
;
715 struct dentry
*default_mgmt_key
;
718 /* must be last, dynamically sized area in this! */
719 struct ieee80211_vif vif
;
723 struct ieee80211_sub_if_data
*vif_to_sdata(struct ieee80211_vif
*p
)
725 return container_of(p
, struct ieee80211_sub_if_data
, vif
);
728 enum sdata_queue_type
{
729 IEEE80211_SDATA_QUEUE_TYPE_FRAME
= 0,
730 IEEE80211_SDATA_QUEUE_AGG_START
= 1,
731 IEEE80211_SDATA_QUEUE_AGG_STOP
= 2,
735 IEEE80211_RX_MSG
= 1,
736 IEEE80211_TX_STATUS_MSG
= 2,
737 IEEE80211_EOSP_MSG
= 3,
740 struct skb_eosp_msg_data
{
741 u8 sta
[ETH_ALEN
], iface
[ETH_ALEN
];
744 enum queue_stop_reason
{
745 IEEE80211_QUEUE_STOP_REASON_DRIVER
,
746 IEEE80211_QUEUE_STOP_REASON_PS
,
747 IEEE80211_QUEUE_STOP_REASON_CSA
,
748 IEEE80211_QUEUE_STOP_REASON_AGGREGATION
,
749 IEEE80211_QUEUE_STOP_REASON_SUSPEND
,
750 IEEE80211_QUEUE_STOP_REASON_SKB_ADD
,
751 IEEE80211_QUEUE_STOP_REASON_CHTYPE_CHANGE
,
754 #ifdef CONFIG_MAC80211_LEDS
755 struct tpt_led_trigger
{
756 struct led_trigger trig
;
758 const struct ieee80211_tpt_blink
*blink_table
;
759 unsigned int blink_table_len
;
760 struct timer_list timer
;
761 unsigned long prev_traffic
;
762 unsigned long tx_bytes
, rx_bytes
;
763 unsigned int active
, want
;
769 * mac80211 scan flags - currently active scan mode
771 * @SCAN_SW_SCANNING: We're currently in the process of scanning but may as
772 * well be on the operating channel
773 * @SCAN_HW_SCANNING: The hardware is scanning for us, we have no way to
774 * determine if we are on the operating channel or not
775 * @SCAN_COMPLETED: Set for our scan work function when the driver reported
776 * that the scan completed.
777 * @SCAN_ABORTED: Set for our scan work function when the driver reported
778 * a scan complete for an aborted scan.
788 * enum mac80211_scan_state - scan state machine states
790 * @SCAN_DECISION: Main entry point to the scan state machine, this state
791 * determines if we should keep on scanning or switch back to the
793 * @SCAN_SET_CHANNEL: Set the next channel to be scanned
794 * @SCAN_SEND_PROBE: Send probe requests and wait for probe responses
795 * @SCAN_SUSPEND: Suspend the scan and go back to operating channel to
797 * @SCAN_RESUME: Resume the scan and scan the next channel
799 enum mac80211_scan_state
{
807 struct ieee80211_local
{
808 /* embed the driver visible part.
809 * don't cast (use the static inlines below), but we keep
810 * it first anyway so they become a no-op */
811 struct ieee80211_hw hw
;
813 const struct ieee80211_ops
*ops
;
816 * work stuff, potentially off-channel (in the future)
818 struct list_head work_list
;
819 struct timer_list work_timer
;
820 struct work_struct work_work
;
823 * private workqueue to mac80211. mac80211 makes this accessible
824 * via ieee80211_queue_work()
826 struct workqueue_struct
*workqueue
;
828 unsigned long queue_stop_reasons
[IEEE80211_MAX_QUEUES
];
829 /* also used to protect ampdu_ac_queue and amdpu_ac_stop_refcnt */
830 spinlock_t queue_stop_reason_lock
;
833 int monitors
, cooked_mntrs
;
834 /* number of interfaces with corresponding FIF_ flags */
835 int fif_fcsfail
, fif_plcpfail
, fif_control
, fif_other_bss
, fif_pspoll
,
838 unsigned int filter_flags
; /* FIF_* */
840 bool wiphy_ciphers_allocated
;
842 /* protects the aggregated multicast list and filter calls */
843 spinlock_t filter_lock
;
845 /* used for uploading changed mc list */
846 struct work_struct reconfig_filter
;
848 /* used to reconfigure hardware SM PS */
849 struct work_struct recalc_smps
;
851 /* aggregated multicast list */
852 struct netdev_hw_addr_list mc_list
;
854 bool tim_in_locked_section
; /* see ieee80211_beacon_get() */
857 * suspended is true if we finished all the suspend _and_ we have
858 * not yet come up from resume. This is to be used by mac80211
859 * to ensure driver sanity during suspend and mac80211's own
860 * sanity. It can eventually be used for WoW as well.
865 * Resuming is true while suspended, but when we're reprogramming the
866 * hardware -- at that time it's allowed to use ieee80211_queue_work()
867 * again even though some other parts of the stack are still suspended
868 * and we still drop received frames to avoid waking the stack.
873 * quiescing is true during the suspend process _only_ to
874 * ease timer cancelling etc.
878 /* device is started */
881 /* wowlan is enabled -- don't reconfig on resume */
884 int tx_headroom
; /* required headroom for hardware/radiotap */
886 /* Tasklet and skb queue to process calls from IRQ mode. All frames
887 * added to skb_queue will be processed, but frames in
888 * skb_queue_unreliable may be dropped if the total length of these
889 * queues increases over the limit. */
890 #define IEEE80211_IRQSAFE_QUEUE_LIMIT 128
891 struct tasklet_struct tasklet
;
892 struct sk_buff_head skb_queue
;
893 struct sk_buff_head skb_queue_unreliable
;
896 * Internal FIFO queue which is shared between multiple rx path
897 * stages. Its main task is to provide a serialization mechanism,
898 * so all rx handlers can enjoy having exclusive access to their
899 * private data structures.
901 struct sk_buff_head rx_skb_queue
;
902 bool running_rx_handler
; /* protected by rx_skb_queue.lock */
906 * The mutex only protects the list, hash table and
907 * counter, reads are done with RCU.
909 struct mutex sta_mtx
;
911 unsigned long num_sta
;
912 struct list_head sta_list
;
913 struct sta_info __rcu
*sta_hash
[STA_HASH_SIZE
];
914 struct timer_list sta_cleanup
;
917 struct sk_buff_head pending
[IEEE80211_MAX_QUEUES
];
918 struct tasklet_struct tx_pending_tasklet
;
920 atomic_t agg_queue_stop
[IEEE80211_MAX_QUEUES
];
922 /* number of interfaces with corresponding IFF_ flags */
923 atomic_t iff_allmultis
, iff_promiscs
;
925 struct rate_control_ref
*rate_ctrl
;
927 struct crypto_cipher
*wep_tx_tfm
;
928 struct crypto_cipher
*wep_rx_tfm
;
932 struct list_head interfaces
;
933 struct mutex iflist_mtx
;
936 * Key mutex, protects sdata's key_list and sta_info's
937 * key pointers (write access, they're RCU.)
939 struct mutex key_mtx
;
941 /* mutex for scan and work locking */
944 /* Scanning and BSS list */
945 unsigned long scanning
;
946 struct cfg80211_ssid scan_ssid
;
947 struct cfg80211_scan_request
*int_scan_req
;
948 struct cfg80211_scan_request
*scan_req
, *hw_scan_req
;
949 struct ieee80211_channel
*scan_channel
;
950 enum ieee80211_band hw_scan_band
;
951 int scan_channel_idx
;
955 struct ieee80211_sched_scan_ies sched_scan_ies
;
956 struct work_struct sched_scan_stopped_work
;
958 unsigned long leave_oper_channel_time
;
959 enum mac80211_scan_state next_scan_state
;
960 struct delayed_work scan_work
;
961 struct ieee80211_sub_if_data
*scan_sdata
;
962 enum nl80211_channel_type _oper_channel_type
;
963 struct ieee80211_channel
*oper_channel
, *csa_channel
;
965 /* Temporary remain-on-channel for off-channel operations */
966 struct ieee80211_channel
*tmp_channel
;
967 enum nl80211_channel_type tmp_channel_type
;
970 /* dot11CountersTable */
971 u32 dot11TransmittedFragmentCount
;
972 u32 dot11MulticastTransmittedFrameCount
;
973 u32 dot11FailedCount
;
975 u32 dot11MultipleRetryCount
;
976 u32 dot11FrameDuplicateCount
;
977 u32 dot11ReceivedFragmentCount
;
978 u32 dot11MulticastReceivedFrameCount
;
979 u32 dot11TransmittedFrameCount
;
981 #ifdef CONFIG_MAC80211_LEDS
982 int tx_led_counter
, rx_led_counter
;
983 struct led_trigger
*tx_led
, *rx_led
, *assoc_led
, *radio_led
;
984 struct tpt_led_trigger
*tpt_led_trigger
;
985 char tx_led_name
[32], rx_led_name
[32],
986 assoc_led_name
[32], radio_led_name
[32];
989 #ifdef CONFIG_MAC80211_DEBUG_COUNTERS
990 /* TX/RX handler statistics */
991 unsigned int tx_handlers_drop
;
992 unsigned int tx_handlers_queued
;
993 unsigned int tx_handlers_drop_unencrypted
;
994 unsigned int tx_handlers_drop_fragment
;
995 unsigned int tx_handlers_drop_wep
;
996 unsigned int tx_handlers_drop_not_assoc
;
997 unsigned int tx_handlers_drop_unauth_port
;
998 unsigned int rx_handlers_drop
;
999 unsigned int rx_handlers_queued
;
1000 unsigned int rx_handlers_drop_nullfunc
;
1001 unsigned int rx_handlers_drop_defrag
;
1002 unsigned int rx_handlers_drop_short
;
1003 unsigned int rx_handlers_drop_passive_scan
;
1004 unsigned int tx_expand_skb_head
;
1005 unsigned int tx_expand_skb_head_cloned
;
1006 unsigned int rx_expand_skb_head
;
1007 unsigned int rx_expand_skb_head2
;
1008 unsigned int rx_handlers_fragments
;
1009 unsigned int tx_status_drop
;
1010 #define I802_DEBUG_INC(c) (c)++
1011 #else /* CONFIG_MAC80211_DEBUG_COUNTERS */
1012 #define I802_DEBUG_INC(c) do { } while (0)
1013 #endif /* CONFIG_MAC80211_DEBUG_COUNTERS */
1016 int total_ps_buffered
; /* total number of all buffered unicast and
1017 * multicast packets for power saving stations
1019 unsigned int wmm_acm
; /* bit field of ACM bits (BIT(802.1D tag)) */
1022 * Bitmask of enabled u-apsd queues,
1023 * IEEE80211_WMM_IE_STA_QOSINFO_AC_BE & co. Needs a new association
1026 unsigned int uapsd_queues
;
1029 * Maximum number of buffered frames AP can deliver during a
1030 * service period, IEEE80211_WMM_IE_STA_QOSINFO_SP_ALL or similar.
1031 * Needs a new association to take effect.
1033 unsigned int uapsd_max_sp_len
;
1036 bool offchannel_ps_enabled
;
1038 * PS can only be enabled when we have exactly one managed
1039 * interface (and monitors) in PS, this then points there.
1041 struct ieee80211_sub_if_data
*ps_sdata
;
1042 struct work_struct dynamic_ps_enable_work
;
1043 struct work_struct dynamic_ps_disable_work
;
1044 struct timer_list dynamic_ps_timer
;
1045 struct notifier_block network_latency_notifier
;
1046 struct notifier_block ifa_notifier
;
1049 * The dynamic ps timeout configured from user space via WEXT -
1050 * this will override whatever chosen by mac80211 internally.
1052 int dynamic_ps_forced_timeout
;
1053 int dynamic_ps_user_timeout
;
1054 bool disable_dynamic_ps
;
1056 int user_power_level
; /* in dBm */
1057 int power_constr_level
; /* in dBm */
1059 enum ieee80211_smps_mode smps_mode
;
1061 struct work_struct restart_work
;
1063 #ifdef CONFIG_MAC80211_DEBUGFS
1064 struct local_debugfsdentries
{
1065 struct dentry
*rcdir
;
1066 struct dentry
*keys
;
1070 struct ieee80211_channel
*hw_roc_channel
;
1071 struct net_device
*hw_roc_dev
;
1072 struct sk_buff
*hw_roc_skb
, *hw_roc_skb_for_status
;
1073 struct work_struct hw_roc_start
, hw_roc_done
;
1074 enum nl80211_channel_type hw_roc_channel_type
;
1075 unsigned int hw_roc_duration
;
1079 struct idr ack_status_frames
;
1080 spinlock_t ack_status_lock
;
1082 /* dummy netdev for use w/ NAPI */
1083 struct net_device napi_dev
;
1085 struct napi_struct napi
;
1088 static inline struct ieee80211_sub_if_data
*
1089 IEEE80211_DEV_TO_SUB_IF(struct net_device
*dev
)
1091 return netdev_priv(dev
);
1094 /* this struct represents 802.11n's RA/TID combination */
1095 struct ieee80211_ra_tid
{
1100 /* Parsed Information Elements */
1101 struct ieee802_11_elems
{
1105 /* pointers to IEs */
1111 struct ieee80211_tim_ie
*tim
;
1120 struct ieee80211_ht_cap
*ht_cap_elem
;
1121 struct ieee80211_ht_info
*ht_info_elem
;
1122 struct ieee80211_meshconf_ie
*mesh_config
;
1128 struct ieee80211_rann_ie
*rann
;
1131 u8
*pwr_constr_elem
;
1132 u8
*quiet_elem
; /* first quite element */
1135 /* length of them, respectively */
1147 u8 ext_supp_rates_len
;
1155 u8 ch_switch_elem_len
;
1156 u8 country_elem_len
;
1157 u8 pwr_constr_elem_len
;
1159 u8 num_of_quiet_elem
; /* can be more the one */
1162 /* whether a parse error occurred while retrieving these elements */
1166 static inline struct ieee80211_local
*hw_to_local(
1167 struct ieee80211_hw
*hw
)
1169 return container_of(hw
, struct ieee80211_local
, hw
);
1173 static inline int ieee80211_bssid_match(const u8
*raddr
, const u8
*addr
)
1175 return compare_ether_addr(raddr
, addr
) == 0 ||
1176 is_broadcast_ether_addr(raddr
);
1180 int ieee80211_hw_config(struct ieee80211_local
*local
, u32 changed
);
1181 void ieee80211_tx_set_protected(struct ieee80211_tx_data
*tx
);
1182 void ieee80211_bss_info_change_notify(struct ieee80211_sub_if_data
*sdata
,
1184 void ieee80211_configure_filter(struct ieee80211_local
*local
);
1185 u32
ieee80211_reset_erp_info(struct ieee80211_sub_if_data
*sdata
);
1188 void ieee80211_sta_setup_sdata(struct ieee80211_sub_if_data
*sdata
);
1189 int ieee80211_mgd_auth(struct ieee80211_sub_if_data
*sdata
,
1190 struct cfg80211_auth_request
*req
);
1191 int ieee80211_mgd_assoc(struct ieee80211_sub_if_data
*sdata
,
1192 struct cfg80211_assoc_request
*req
);
1193 int ieee80211_mgd_deauth(struct ieee80211_sub_if_data
*sdata
,
1194 struct cfg80211_deauth_request
*req
);
1195 int ieee80211_mgd_disassoc(struct ieee80211_sub_if_data
*sdata
,
1196 struct cfg80211_disassoc_request
*req
);
1197 void ieee80211_send_pspoll(struct ieee80211_local
*local
,
1198 struct ieee80211_sub_if_data
*sdata
);
1199 void ieee80211_recalc_ps(struct ieee80211_local
*local
, s32 latency
);
1200 int ieee80211_max_network_latency(struct notifier_block
*nb
,
1201 unsigned long data
, void *dummy
);
1202 int ieee80211_set_arp_filter(struct ieee80211_sub_if_data
*sdata
);
1203 void ieee80211_sta_process_chanswitch(struct ieee80211_sub_if_data
*sdata
,
1204 struct ieee80211_channel_sw_ie
*sw_elem
,
1205 struct ieee80211_bss
*bss
,
1207 void ieee80211_sta_quiesce(struct ieee80211_sub_if_data
*sdata
);
1208 void ieee80211_sta_restart(struct ieee80211_sub_if_data
*sdata
);
1209 void ieee80211_sta_work(struct ieee80211_sub_if_data
*sdata
);
1210 void ieee80211_sta_rx_queued_mgmt(struct ieee80211_sub_if_data
*sdata
,
1211 struct sk_buff
*skb
);
1212 void ieee80211_sta_reset_beacon_monitor(struct ieee80211_sub_if_data
*sdata
);
1213 void ieee80211_sta_reset_conn_monitor(struct ieee80211_sub_if_data
*sdata
);
1214 void ieee80211_mgd_teardown(struct ieee80211_sub_if_data
*sdata
);
1217 void ieee80211_ibss_notify_scan_completed(struct ieee80211_local
*local
);
1218 void ieee80211_ibss_setup_sdata(struct ieee80211_sub_if_data
*sdata
);
1219 void ieee80211_ibss_rx_no_sta(struct ieee80211_sub_if_data
*sdata
,
1220 const u8
*bssid
, const u8
*addr
, u32 supp_rates
);
1221 int ieee80211_ibss_join(struct ieee80211_sub_if_data
*sdata
,
1222 struct cfg80211_ibss_params
*params
);
1223 int ieee80211_ibss_leave(struct ieee80211_sub_if_data
*sdata
);
1224 void ieee80211_ibss_quiesce(struct ieee80211_sub_if_data
*sdata
);
1225 void ieee80211_ibss_restart(struct ieee80211_sub_if_data
*sdata
);
1226 void ieee80211_ibss_work(struct ieee80211_sub_if_data
*sdata
);
1227 void ieee80211_ibss_rx_queued_mgmt(struct ieee80211_sub_if_data
*sdata
,
1228 struct sk_buff
*skb
);
1231 void ieee80211_mesh_work(struct ieee80211_sub_if_data
*sdata
);
1232 void ieee80211_mesh_rx_queued_mgmt(struct ieee80211_sub_if_data
*sdata
,
1233 struct sk_buff
*skb
);
1235 /* scan/BSS handling */
1236 void ieee80211_scan_work(struct work_struct
*work
);
1237 int ieee80211_request_internal_scan(struct ieee80211_sub_if_data
*sdata
,
1238 const u8
*ssid
, u8 ssid_len
,
1239 struct ieee80211_channel
*chan
);
1240 int ieee80211_request_scan(struct ieee80211_sub_if_data
*sdata
,
1241 struct cfg80211_scan_request
*req
);
1242 void ieee80211_scan_cancel(struct ieee80211_local
*local
);
1244 ieee80211_scan_rx(struct ieee80211_sub_if_data
*sdata
, struct sk_buff
*skb
);
1246 void ieee80211_mlme_notify_scan_completed(struct ieee80211_local
*local
);
1247 struct ieee80211_bss
*
1248 ieee80211_bss_info_update(struct ieee80211_local
*local
,
1249 struct ieee80211_rx_status
*rx_status
,
1250 struct ieee80211_mgmt
*mgmt
,
1252 struct ieee802_11_elems
*elems
,
1253 struct ieee80211_channel
*channel
,
1255 struct ieee80211_bss
*
1256 ieee80211_rx_bss_get(struct ieee80211_local
*local
, u8
*bssid
, int freq
,
1257 u8
*ssid
, u8 ssid_len
);
1258 void ieee80211_rx_bss_put(struct ieee80211_local
*local
,
1259 struct ieee80211_bss
*bss
);
1261 /* scheduled scan handling */
1262 int ieee80211_request_sched_scan_start(struct ieee80211_sub_if_data
*sdata
,
1263 struct cfg80211_sched_scan_request
*req
);
1264 int ieee80211_request_sched_scan_stop(struct ieee80211_sub_if_data
*sdata
);
1265 void ieee80211_sched_scan_stopped_work(struct work_struct
*work
);
1267 /* off-channel helpers */
1268 void ieee80211_offchannel_stop_vifs(struct ieee80211_local
*local
,
1269 bool offchannel_ps_enable
);
1270 void ieee80211_offchannel_return(struct ieee80211_local
*local
,
1271 bool offchannel_ps_disable
);
1272 void ieee80211_hw_roc_setup(struct ieee80211_local
*local
);
1274 /* interface handling */
1275 int ieee80211_iface_init(void);
1276 void ieee80211_iface_exit(void);
1277 int ieee80211_if_add(struct ieee80211_local
*local
, const char *name
,
1278 struct net_device
**new_dev
, enum nl80211_iftype type
,
1279 struct vif_params
*params
);
1280 int ieee80211_if_change_type(struct ieee80211_sub_if_data
*sdata
,
1281 enum nl80211_iftype type
);
1282 void ieee80211_if_remove(struct ieee80211_sub_if_data
*sdata
);
1283 void ieee80211_remove_interfaces(struct ieee80211_local
*local
);
1284 u32
__ieee80211_recalc_idle(struct ieee80211_local
*local
);
1285 void ieee80211_recalc_idle(struct ieee80211_local
*local
);
1286 void ieee80211_adjust_monitor_flags(struct ieee80211_sub_if_data
*sdata
,
1289 static inline bool ieee80211_sdata_running(struct ieee80211_sub_if_data
*sdata
)
1291 return test_bit(SDATA_STATE_RUNNING
, &sdata
->state
);
1295 void ieee80211_clear_tx_pending(struct ieee80211_local
*local
);
1296 void ieee80211_tx_pending(unsigned long data
);
1297 netdev_tx_t
ieee80211_monitor_start_xmit(struct sk_buff
*skb
,
1298 struct net_device
*dev
);
1299 netdev_tx_t
ieee80211_subif_start_xmit(struct sk_buff
*skb
,
1300 struct net_device
*dev
);
1303 bool ieee80111_cfg_override_disables_ht40(struct ieee80211_sub_if_data
*sdata
);
1304 void ieee80211_apply_htcap_overrides(struct ieee80211_sub_if_data
*sdata
,
1305 struct ieee80211_sta_ht_cap
*ht_cap
);
1306 void ieee80211_ht_cap_ie_to_sta_ht_cap(struct ieee80211_sub_if_data
*sdata
,
1307 struct ieee80211_supported_band
*sband
,
1308 struct ieee80211_ht_cap
*ht_cap_ie
,
1309 struct ieee80211_sta_ht_cap
*ht_cap
);
1310 void ieee80211_send_delba(struct ieee80211_sub_if_data
*sdata
,
1311 const u8
*da
, u16 tid
,
1312 u16 initiator
, u16 reason_code
);
1313 int ieee80211_send_smps_action(struct ieee80211_sub_if_data
*sdata
,
1314 enum ieee80211_smps_mode smps
, const u8
*da
,
1316 void ieee80211_request_smps_work(struct work_struct
*work
);
1318 void ___ieee80211_stop_rx_ba_session(struct sta_info
*sta
, u16 tid
,
1319 u16 initiator
, u16 reason
, bool stop
);
1320 void __ieee80211_stop_rx_ba_session(struct sta_info
*sta
, u16 tid
,
1321 u16 initiator
, u16 reason
, bool stop
);
1322 void ieee80211_sta_tear_down_BA_sessions(struct sta_info
*sta
, bool tx
);
1323 void ieee80211_process_delba(struct ieee80211_sub_if_data
*sdata
,
1324 struct sta_info
*sta
,
1325 struct ieee80211_mgmt
*mgmt
, size_t len
);
1326 void ieee80211_process_addba_resp(struct ieee80211_local
*local
,
1327 struct sta_info
*sta
,
1328 struct ieee80211_mgmt
*mgmt
,
1330 void ieee80211_process_addba_request(struct ieee80211_local
*local
,
1331 struct sta_info
*sta
,
1332 struct ieee80211_mgmt
*mgmt
,
1335 int __ieee80211_stop_tx_ba_session(struct sta_info
*sta
, u16 tid
,
1336 enum ieee80211_back_parties initiator
,
1338 int ___ieee80211_stop_tx_ba_session(struct sta_info
*sta
, u16 tid
,
1339 enum ieee80211_back_parties initiator
,
1341 void ieee80211_start_tx_ba_cb(struct ieee80211_vif
*vif
, u8
*ra
, u16 tid
);
1342 void ieee80211_stop_tx_ba_cb(struct ieee80211_vif
*vif
, u8
*ra
, u8 tid
);
1343 void ieee80211_ba_session_work(struct work_struct
*work
);
1344 void ieee80211_tx_ba_session_handle_start(struct sta_info
*sta
, int tid
);
1345 void ieee80211_release_reorder_timeout(struct sta_info
*sta
, int tid
);
1347 /* Spectrum management */
1348 void ieee80211_process_measurement_req(struct ieee80211_sub_if_data
*sdata
,
1349 struct ieee80211_mgmt
*mgmt
,
1352 /* Suspend/resume and hw reconfiguration */
1353 int ieee80211_reconfig(struct ieee80211_local
*local
);
1354 void ieee80211_stop_device(struct ieee80211_local
*local
);
1357 int __ieee80211_suspend(struct ieee80211_hw
*hw
,
1358 struct cfg80211_wowlan
*wowlan
);
1360 static inline int __ieee80211_resume(struct ieee80211_hw
*hw
)
1362 struct ieee80211_local
*local
= hw_to_local(hw
);
1364 WARN(test_bit(SCAN_HW_SCANNING
, &local
->scanning
),
1365 "%s: resume with hardware scan still in progress\n",
1366 wiphy_name(hw
->wiphy
));
1368 return ieee80211_reconfig(hw_to_local(hw
));
1371 static inline int __ieee80211_suspend(struct ieee80211_hw
*hw
,
1372 struct cfg80211_wowlan
*wowlan
)
1377 static inline int __ieee80211_resume(struct ieee80211_hw
*hw
)
1383 /* utility functions/constants */
1384 extern void *mac80211_wiphy_privid
; /* for wiphy privid */
1385 u8
*ieee80211_get_bssid(struct ieee80211_hdr
*hdr
, size_t len
,
1386 enum nl80211_iftype type
);
1387 int ieee80211_frame_duration(struct ieee80211_local
*local
, size_t len
,
1388 int rate
, int erp
, int short_preamble
);
1389 void mac80211_ev_michael_mic_failure(struct ieee80211_sub_if_data
*sdata
, int keyidx
,
1390 struct ieee80211_hdr
*hdr
, const u8
*tsc
,
1392 void ieee80211_set_wmm_default(struct ieee80211_sub_if_data
*sdata
,
1394 void ieee80211_xmit(struct ieee80211_sub_if_data
*sdata
, struct sk_buff
*skb
);
1396 void ieee80211_tx_skb_tid(struct ieee80211_sub_if_data
*sdata
,
1397 struct sk_buff
*skb
, int tid
);
1398 static void inline ieee80211_tx_skb(struct ieee80211_sub_if_data
*sdata
,
1399 struct sk_buff
*skb
)
1401 /* Send all internal mgmt frames on VO. Accordingly set TID to 7. */
1402 ieee80211_tx_skb_tid(sdata
, skb
, 7);
1405 void ieee802_11_parse_elems(u8
*start
, size_t len
,
1406 struct ieee802_11_elems
*elems
);
1407 u32
ieee802_11_parse_elems_crc(u8
*start
, size_t len
,
1408 struct ieee802_11_elems
*elems
,
1409 u64 filter
, u32 crc
);
1410 u32
ieee80211_mandatory_rates(struct ieee80211_local
*local
,
1411 enum ieee80211_band band
);
1413 void ieee80211_dynamic_ps_enable_work(struct work_struct
*work
);
1414 void ieee80211_dynamic_ps_disable_work(struct work_struct
*work
);
1415 void ieee80211_dynamic_ps_timer(unsigned long data
);
1416 void ieee80211_send_nullfunc(struct ieee80211_local
*local
,
1417 struct ieee80211_sub_if_data
*sdata
,
1419 void ieee80211_sta_rx_notify(struct ieee80211_sub_if_data
*sdata
,
1420 struct ieee80211_hdr
*hdr
);
1421 void ieee80211_sta_tx_notify(struct ieee80211_sub_if_data
*sdata
,
1422 struct ieee80211_hdr
*hdr
, bool ack
);
1423 void ieee80211_beacon_connection_loss_work(struct work_struct
*work
);
1425 void ieee80211_wake_queues_by_reason(struct ieee80211_hw
*hw
,
1426 enum queue_stop_reason reason
);
1427 void ieee80211_stop_queues_by_reason(struct ieee80211_hw
*hw
,
1428 enum queue_stop_reason reason
);
1429 void ieee80211_wake_queue_by_reason(struct ieee80211_hw
*hw
, int queue
,
1430 enum queue_stop_reason reason
);
1431 void ieee80211_stop_queue_by_reason(struct ieee80211_hw
*hw
, int queue
,
1432 enum queue_stop_reason reason
);
1433 void ieee80211_add_pending_skb(struct ieee80211_local
*local
,
1434 struct sk_buff
*skb
);
1435 void ieee80211_add_pending_skbs(struct ieee80211_local
*local
,
1436 struct sk_buff_head
*skbs
);
1437 void ieee80211_add_pending_skbs_fn(struct ieee80211_local
*local
,
1438 struct sk_buff_head
*skbs
,
1439 void (*fn
)(void *data
), void *data
);
1441 void ieee80211_send_auth(struct ieee80211_sub_if_data
*sdata
,
1442 u16 transaction
, u16 auth_alg
,
1443 u8
*extra
, size_t extra_len
, const u8
*bssid
,
1444 const u8
*da
, const u8
*key
, u8 key_len
, u8 key_idx
);
1445 int ieee80211_build_preq_ies(struct ieee80211_local
*local
, u8
*buffer
,
1446 const u8
*ie
, size_t ie_len
,
1447 enum ieee80211_band band
, u32 rate_mask
,
1449 struct sk_buff
*ieee80211_build_probe_req(struct ieee80211_sub_if_data
*sdata
,
1450 u8
*dst
, u32 ratemask
,
1451 const u8
*ssid
, size_t ssid_len
,
1452 const u8
*ie
, size_t ie_len
,
1454 void ieee80211_send_probe_req(struct ieee80211_sub_if_data
*sdata
, u8
*dst
,
1455 const u8
*ssid
, size_t ssid_len
,
1456 const u8
*ie
, size_t ie_len
,
1457 u32 ratemask
, bool directed
, bool no_cck
);
1459 void ieee80211_sta_def_wmm_params(struct ieee80211_sub_if_data
*sdata
,
1460 const size_t supp_rates_len
,
1461 const u8
*supp_rates
);
1462 u32
ieee80211_sta_get_rates(struct ieee80211_local
*local
,
1463 struct ieee802_11_elems
*elems
,
1464 enum ieee80211_band band
);
1465 int __ieee80211_request_smps(struct ieee80211_sub_if_data
*sdata
,
1466 enum ieee80211_smps_mode smps_mode
);
1467 void ieee80211_recalc_smps(struct ieee80211_local
*local
);
1469 size_t ieee80211_ie_split(const u8
*ies
, size_t ielen
,
1470 const u8
*ids
, int n_ids
, size_t offset
);
1471 size_t ieee80211_ie_split_vendor(const u8
*ies
, size_t ielen
, size_t offset
);
1472 u8
*ieee80211_ie_build_ht_cap(u8
*pos
, struct ieee80211_sta_ht_cap
*ht_cap
,
1474 u8
*ieee80211_ie_build_ht_info(u8
*pos
,
1475 struct ieee80211_sta_ht_cap
*ht_cap
,
1476 struct ieee80211_channel
*channel
,
1477 enum nl80211_channel_type channel_type
);
1479 /* internal work items */
1480 void ieee80211_work_init(struct ieee80211_local
*local
);
1481 void ieee80211_add_work(struct ieee80211_work
*wk
);
1482 void free_work(struct ieee80211_work
*wk
);
1483 void ieee80211_work_purge(struct ieee80211_sub_if_data
*sdata
);
1484 int ieee80211_wk_remain_on_channel(struct ieee80211_sub_if_data
*sdata
,
1485 struct ieee80211_channel
*chan
,
1486 enum nl80211_channel_type channel_type
,
1487 unsigned int duration
, u64
*cookie
);
1488 int ieee80211_wk_cancel_remain_on_channel(
1489 struct ieee80211_sub_if_data
*sdata
, u64 cookie
);
1491 /* channel management */
1492 enum ieee80211_chan_mode
{
1493 CHAN_MODE_UNDEFINED
,
1498 enum ieee80211_chan_mode
1499 ieee80211_get_channel_mode(struct ieee80211_local
*local
,
1500 struct ieee80211_sub_if_data
*ignore
);
1501 bool ieee80211_set_channel_type(struct ieee80211_local
*local
,
1502 struct ieee80211_sub_if_data
*sdata
,
1503 enum nl80211_channel_type chantype
);
1504 enum nl80211_channel_type
1505 ieee80211_ht_info_to_channel_type(struct ieee80211_ht_info
*ht_info
);
1507 #ifdef CONFIG_MAC80211_NOINLINE
1508 #define debug_noinline noinline
1510 #define debug_noinline
1513 #endif /* IEEE80211_I_H */