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Release 4.12 include/net/ax25.h

Directory: include/net
/*
 *      Declarations of AX.25 type objects.
 *
 *      Alan Cox (GW4PTS)       10/11/93
 */
#ifndef _AX25_H

#define _AX25_H 

#include <linux/ax25.h>
#include <linux/spinlock.h>
#include <linux/timer.h>
#include <linux/list.h>
#include <linux/slab.h>
#include <linux/atomic.h>
#include <net/neighbour.h>
#include <net/sock.h>


#define	AX25_T1CLAMPLO  		1

#define	AX25_T1CLAMPHI 			(30 * HZ)


#define	AX25_BPQ_HEADER_LEN		16

#define	AX25_KISS_HEADER_LEN		1


#define	AX25_HEADER_LEN			17

#define	AX25_ADDR_LEN			7

#define	AX25_DIGI_HEADER_LEN		(AX25_MAX_DIGIS * AX25_ADDR_LEN)

#define	AX25_MAX_HEADER_LEN		(AX25_HEADER_LEN + AX25_DIGI_HEADER_LEN)

/* AX.25 Protocol IDs */

#define AX25_P_ROSE			0x01

#define AX25_P_VJCOMP			0x06	
/* Compressed TCP/IP packet   */
						/* Van Jacobsen (RFC 1144)    */

#define AX25_P_VJUNCOMP			0x07	
/* Uncompressed TCP/IP packet */
						/* Van Jacobsen (RFC 1144)    */

#define	AX25_P_SEGMENT			0x08	
/* Segmentation fragment      */

#define AX25_P_TEXNET			0xc3	
/* TEXTNET datagram protocol  */

#define AX25_P_LQ			0xc4	
/* Link Quality Protocol      */

#define AX25_P_ATALK			0xca	
/* Appletalk                  */

#define AX25_P_ATALK_ARP		0xcb	
/* Appletalk ARP              */

#define AX25_P_IP			0xcc	
/* ARPA Internet Protocol     */

#define AX25_P_ARP			0xcd	
/* ARPA Address Resolution    */

#define AX25_P_FLEXNET			0xce	
/* FlexNet                    */

#define AX25_P_NETROM 			0xcf	
/* NET/ROM                    */

#define AX25_P_TEXT 			0xF0	
/* No layer 3 protocol impl.  */

/* AX.25 Segment control values */

#define	AX25_SEG_REM			0x7F

#define	AX25_SEG_FIRST			0x80


#define AX25_CBIT			0x80	
/* Command/Response bit */

#define AX25_EBIT			0x01	
/* HDLC Address Extension bit */

#define AX25_HBIT			0x80	
/* Has been repeated bit */


#define AX25_SSSID_SPARE		0x60	
/* Unused bits in SSID for standard AX.25 */

#define AX25_ESSID_SPARE		0x20	
/* Unused bits in SSID for extended AX.25 */

#define AX25_DAMA_FLAG			0x20	
/* Well, it is *NOT* unused! (dl1bke 951121 */


#define	AX25_COND_ACK_PENDING		0x01

#define	AX25_COND_REJECT		0x02

#define	AX25_COND_PEER_RX_BUSY		0x04

#define	AX25_COND_OWN_RX_BUSY		0x08

#define	AX25_COND_DAMA_MODE		0x10

#ifndef _LINUX_NETDEVICE_H
#include <linux/netdevice.h>
#endif

/* Upper sub-layer (LAPB) definitions */

/* Control field templates */

#define	AX25_I			0x00	
/* Information frames */

#define	AX25_S			0x01	
/* Supervisory frames */

#define	AX25_RR			0x01	
/* Receiver ready */

#define	AX25_RNR		0x05	
/* Receiver not ready */

#define	AX25_REJ		0x09	
/* Reject */

#define	AX25_U			0x03	
/* Unnumbered frames */

#define	AX25_SABM		0x2f	
/* Set Asynchronous Balanced Mode */

#define	AX25_SABME		0x6f	
/* Set Asynchronous Balanced Mode Extended */

#define	AX25_DISC		0x43	
/* Disconnect */

#define	AX25_DM			0x0f	
/* Disconnected mode */

#define	AX25_UA			0x63	
/* Unnumbered acknowledge */

#define	AX25_FRMR		0x87	
/* Frame reject */

#define	AX25_UI			0x03	
/* Unnumbered information */

#define	AX25_XID		0xaf	
/* Exchange information */

#define	AX25_TEST		0xe3	
/* Test */


#define	AX25_PF			0x10	
/* Poll/final bit for standard AX.25 */

#define	AX25_EPF		0x01	
/* Poll/final bit for extended AX.25 */


#define AX25_ILLEGAL		0x100	
/* Impossible to be a real frame type */


#define	AX25_POLLOFF		0

#define	AX25_POLLON		1

/* AX25 L2 C-bit */

#define AX25_COMMAND		1

#define AX25_RESPONSE		2

/* Define Link State constants. */

enum { 
	
AX25_STATE_0,			/* Listening */
	
AX25_STATE_1,			/* SABM sent */
	
AX25_STATE_2,			/* DISC sent */
	
AX25_STATE_3,			/* Established */
	
AX25_STATE_4			/* Recovery */
};


#define AX25_MODULUS 		8	
/*  Standard AX.25 modulus */

#define	AX25_EMODULUS		128	
/*  Extended AX.25 modulus */

enum {
	
AX25_PROTO_STD_SIMPLEX,
	
AX25_PROTO_STD_DUPLEX,
#ifdef CONFIG_AX25_DAMA_SLAVE
	
AX25_PROTO_DAMA_SLAVE,
#ifdef CONFIG_AX25_DAMA_MASTER
	
AX25_PROTO_DAMA_MASTER,

#define AX25_PROTO_MAX AX25_PROTO_DAMA_MASTER
#endif
#endif
	
__AX25_PROTO_MAX,
	
AX25_PROTO_MAX = __AX25_PROTO_MAX -1
};

enum {
	
AX25_VALUES_IPDEFMODE,	/* 0=DG 1=VC */
	
AX25_VALUES_AXDEFMODE,	/* 0=Normal 1=Extended Seq Nos */
	
AX25_VALUES_BACKOFF,	/* 0=None 1=Linear 2=Exponential */
	
AX25_VALUES_CONMODE,	/* Allow connected modes - 0=No 1=no "PID text" 2=all PIDs */
	
AX25_VALUES_WINDOW,	/* Default window size for standard AX.25 */
	
AX25_VALUES_EWINDOW,	/* Default window size for extended AX.25 */
	
AX25_VALUES_T1,		/* Default T1 timeout value */
	
AX25_VALUES_T2,		/* Default T2 timeout value */
	
AX25_VALUES_T3,		/* Default T3 timeout value */
	
AX25_VALUES_IDLE,	/* Connected mode idle timer */
	
AX25_VALUES_N2,		/* Default N2 value */
	
AX25_VALUES_PACLEN,	/* AX.25 MTU */
	
AX25_VALUES_PROTOCOL,	/* Std AX.25, DAMA Slave, DAMA Master */
	
AX25_VALUES_DS_TIMEOUT,	/* DAMA Slave timeout */
	
AX25_MAX_VALUES		/* THIS MUST REMAIN THE LAST ENTRY OF THIS LIST */
};


#define	AX25_DEF_IPDEFMODE	0			
/* Datagram */

#define	AX25_DEF_AXDEFMODE	0			
/* Normal */

#define	AX25_DEF_BACKOFF	1			
/* Linear backoff */

#define	AX25_DEF_CONMODE	2			
/* Connected mode allowed */

#define	AX25_DEF_WINDOW		2			
/* Window=2 */

#define	AX25_DEF_EWINDOW	32			
/* Module-128 Window=32 */

#define	AX25_DEF_T1		10000			
/* T1=10s */

#define	AX25_DEF_T2		3000			
/* T2=3s  */

#define	AX25_DEF_T3		300000			
/* T3=300s */

#define	AX25_DEF_N2		10			
/* N2=10 */

#define AX25_DEF_IDLE		0			
/* Idle=None */

#define AX25_DEF_PACLEN		256			
/* Paclen=256 */

#define	AX25_DEF_PROTOCOL	AX25_PROTO_STD_SIMPLEX	
/* Standard AX.25 */

#define AX25_DEF_DS_TIMEOUT	180000			
/* DAMA timeout 3 minutes */


typedef struct ax25_uid_assoc {
	
struct hlist_node	uid_node;
	
atomic_t		refcount;
	
kuid_t			uid;
	
ax25_address		call;

} ax25_uid_assoc;


#define ax25_uid_for_each(__ax25, list) \
	hlist_for_each_entry(__ax25, list, uid_node)


#define ax25_uid_hold(ax25) \
	atomic_inc(&((ax25)->refcount))


static inline void ax25_uid_put(ax25_uid_assoc *assoc) { if (atomic_dec_and_test(&assoc->refcount)) { kfree(assoc); } }

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typedef struct { ax25_address calls[AX25_MAX_DIGIS]; unsigned char repeated[AX25_MAX_DIGIS]; unsigned char ndigi; signed char lastrepeat; } ax25_digi; typedef struct ax25_route { struct ax25_route *next; atomic_t refcount; ax25_address callsign; struct net_device *dev; ax25_digi *digipeat; char ip_mode; } ax25_route;
static inline void ax25_hold_route(ax25_route *ax25_rt) { atomic_inc(&ax25_rt->refcount); }

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void __ax25_put_route(ax25_route *ax25_rt);
static inline void ax25_put_route(ax25_route *ax25_rt) { if (atomic_dec_and_test(&ax25_rt->refcount)) __ax25_put_route(ax25_rt); }

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typedef struct { char slave; /* slave_mode? */ struct timer_list slave_timer; /* timeout timer */ unsigned short slave_timeout; /* when? */ } ax25_dama_info; struct ctl_table; typedef struct ax25_dev { struct ax25_dev *next; struct net_device *dev; struct net_device *forward; struct ctl_table_header *sysheader; int values[AX25_MAX_VALUES]; #if defined(CONFIG_AX25_DAMA_SLAVE) || defined(CONFIG_AX25_DAMA_MASTER) ax25_dama_info dama; #endif } ax25_dev; typedef struct ax25_cb { struct hlist_node ax25_node; ax25_address source_addr, dest_addr; ax25_digi *digipeat; ax25_dev *ax25_dev; unsigned char iamdigi; unsigned char state, modulus, pidincl; unsigned short vs, vr, va; unsigned char condition, backoff; unsigned char n2, n2count; struct timer_list t1timer, t2timer, t3timer, idletimer; unsigned long t1, t2, t3, idle, rtt; unsigned short paclen, fragno, fraglen; struct sk_buff_head write_queue; struct sk_buff_head reseq_queue; struct sk_buff_head ack_queue; struct sk_buff_head frag_queue; unsigned char window; struct timer_list timer, dtimer; struct sock *sk; /* Backlink to socket */ atomic_t refcount; } ax25_cb; struct ax25_sock { struct sock sk; struct ax25_cb *cb; };
static inline struct ax25_sock *ax25_sk(const struct sock *sk) { return (struct ax25_sock *) sk; }

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static inline struct ax25_cb *sk_to_ax25(const struct sock *sk) { return ax25_sk(sk)->cb; }

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#define ax25_for_each(__ax25, list) \ hlist_for_each_entry(__ax25, list, ax25_node) #define ax25_cb_hold(__ax25) \ atomic_inc(&((__ax25)->refcount))
static __inline__ void ax25_cb_put(ax25_cb *ax25) { if (atomic_dec_and_test(&ax25->refcount)) { kfree(ax25->digipeat); kfree(ax25); } }

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static inline __be16 ax25_type_trans(struct sk_buff *skb, struct net_device *dev) { skb->dev = dev; skb_reset_mac_header(skb); skb->pkt_type = PACKET_HOST; return htons(ETH_P_AX25); }

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/* af_ax25.c */ extern struct hlist_head ax25_list; extern spinlock_t ax25_list_lock; void ax25_cb_add(ax25_cb *); struct sock *ax25_find_listener(ax25_address *, int, struct net_device *, int); struct sock *ax25_get_socket(ax25_address *, ax25_address *, int); ax25_cb *ax25_find_cb(ax25_address *, ax25_address *, ax25_digi *, struct net_device *); void ax25_send_to_raw(ax25_address *, struct sk_buff *, int); void ax25_destroy_socket(ax25_cb *); ax25_cb * __must_check ax25_create_cb(void); void ax25_fillin_cb(ax25_cb *, ax25_dev *); struct sock *ax25_make_new(struct sock *, struct ax25_dev *); /* ax25_addr.c */ extern const ax25_address ax25_bcast; extern const ax25_address ax25_defaddr; extern const ax25_address null_ax25_address; char *ax2asc(char *buf, const ax25_address *); void asc2ax(ax25_address *addr, const char *callsign); int ax25cmp(const ax25_address *, const ax25_address *); int ax25digicmp(const ax25_digi *, const ax25_digi *); const unsigned char *ax25_addr_parse(const unsigned char *, int, ax25_address *, ax25_address *, ax25_digi *, int *, int *); int ax25_addr_build(unsigned char *, const ax25_address *, const ax25_address *, const ax25_digi *, int, int); int ax25_addr_size(const ax25_digi *); void ax25_digi_invert(const ax25_digi *, ax25_digi *); /* ax25_dev.c */ extern ax25_dev *ax25_dev_list; extern spinlock_t ax25_dev_lock;
static inline ax25_dev *ax25_dev_ax25dev(struct net_device *dev) { return dev->ax25_ptr; }

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ax25_dev *ax25_addr_ax25dev(ax25_address *); void ax25_dev_device_up(struct net_device *); void ax25_dev_device_down(struct net_device *); int ax25_fwd_ioctl(unsigned int, struct ax25_fwd_struct *); struct net_device *ax25_fwd_dev(struct net_device *); void ax25_dev_free(void); /* ax25_ds_in.c */ int ax25_ds_frame_in(ax25_cb *, struct sk_buff *, int); /* ax25_ds_subr.c */ void ax25_ds_nr_error_recovery(ax25_cb *); void ax25_ds_enquiry_response(ax25_cb *); void ax25_ds_establish_data_link(ax25_cb *); void ax25_dev_dama_off(ax25_dev *); void ax25_dama_on(ax25_cb *); void ax25_dama_off(ax25_cb *); /* ax25_ds_timer.c */ void ax25_ds_setup_timer(ax25_dev *); void ax25_ds_set_timer(ax25_dev *); void ax25_ds_del_timer(ax25_dev *); void ax25_ds_timer(ax25_cb *); void ax25_ds_t1_timeout(ax25_cb *); void ax25_ds_heartbeat_expiry(ax25_cb *); void ax25_ds_t3timer_expiry(ax25_cb *); void ax25_ds_idletimer_expiry(ax25_cb *); /* ax25_iface.c */ struct ax25_protocol { struct ax25_protocol *next; unsigned int pid; int (*func)(struct sk_buff *, ax25_cb *); }; void ax25_register_pid(struct ax25_protocol *ap); void ax25_protocol_release(unsigned int); struct ax25_linkfail { struct hlist_node lf_node; void (*func)(ax25_cb *, int); }; void ax25_linkfail_register(struct ax25_linkfail *lf); void ax25_linkfail_release(struct ax25_linkfail *lf); int __must_check ax25_listen_register(ax25_address *, struct net_device *); void ax25_listen_release(ax25_address *, struct net_device *); int(*ax25_protocol_function(unsigned int))(struct sk_buff *, ax25_cb *); int ax25_listen_mine(ax25_address *, struct net_device *); void ax25_link_failed(ax25_cb *, int); int ax25_protocol_is_registered(unsigned int); /* ax25_in.c */ int ax25_rx_iframe(ax25_cb *, struct sk_buff *); int ax25_kiss_rcv(struct sk_buff *, struct net_device *, struct packet_type *, struct net_device *); /* ax25_ip.c */ netdev_tx_t ax25_ip_xmit(struct sk_buff *skb); extern const struct header_ops ax25_header_ops; /* ax25_out.c */ ax25_cb *ax25_send_frame(struct sk_buff *, int, ax25_address *, ax25_address *, ax25_digi *, struct net_device *); void ax25_output(ax25_cb *, int, struct sk_buff *); void ax25_kick(ax25_cb *); void ax25_transmit_buffer(ax25_cb *, struct sk_buff *, int); void ax25_queue_xmit(struct sk_buff *skb, struct net_device *dev); int ax25_check_iframes_acked(ax25_cb *, unsigned short); /* ax25_route.c */ void ax25_rt_device_down(struct net_device *); int ax25_rt_ioctl(unsigned int, void __user *); extern const struct file_operations ax25_route_fops; ax25_route *ax25_get_route(ax25_address *addr, struct net_device *dev); int ax25_rt_autobind(ax25_cb *, ax25_address *); struct sk_buff *ax25_rt_build_path(struct sk_buff *, ax25_address *, ax25_address *, ax25_digi *); void ax25_rt_free(void); /* ax25_std_in.c */ int ax25_std_frame_in(ax25_cb *, struct sk_buff *, int); /* ax25_std_subr.c */ void ax25_std_nr_error_recovery(ax25_cb *); void ax25_std_establish_data_link(ax25_cb *); void ax25_std_transmit_enquiry(ax25_cb *); void ax25_std_enquiry_response(ax25_cb *); void ax25_std_timeout_response(ax25_cb *); /* ax25_std_timer.c */ void ax25_std_heartbeat_expiry(ax25_cb *); void ax25_std_t1timer_expiry(ax25_cb *); void ax25_std_t2timer_expiry(ax25_cb *); void ax25_std_t3timer_expiry(ax25_cb *); void ax25_std_idletimer_expiry(ax25_cb *); /* ax25_subr.c */ void ax25_clear_queues(ax25_cb *); void ax25_frames_acked(ax25_cb *, unsigned short); void ax25_requeue_frames(ax25_cb *); int ax25_validate_nr(ax25_cb *, unsigned short); int ax25_decode(ax25_cb *, struct sk_buff *, int *, int *, int *); void ax25_send_control(ax25_cb *, int, int, int); void ax25_return_dm(struct net_device *, ax25_address *, ax25_address *, ax25_digi *); void ax25_calculate_t1(ax25_cb *); void ax25_calculate_rtt(ax25_cb *); void ax25_disconnect(ax25_cb *, int); /* ax25_timer.c */ void ax25_setup_timers(ax25_cb *); void ax25_start_heartbeat(ax25_cb *); void ax25_start_t1timer(ax25_cb *); void ax25_start_t2timer(ax25_cb *); void ax25_start_t3timer(ax25_cb *); void ax25_start_idletimer(ax25_cb *); void ax25_stop_heartbeat(ax25_cb *); void ax25_stop_t1timer(ax25_cb *); void ax25_stop_t2timer(ax25_cb *); void ax25_stop_t3timer(ax25_cb *); void ax25_stop_idletimer(ax25_cb *); int ax25_t1timer_running(ax25_cb *); unsigned long ax25_display_timer(struct timer_list *); /* ax25_uid.c */ extern int ax25_uid_policy; ax25_uid_assoc *ax25_findbyuid(kuid_t); int __must_check ax25_uid_ioctl(int, struct sockaddr_ax25 *); extern const struct file_operations ax25_uid_fops; void ax25_uid_free(void); /* sysctl_net_ax25.c */ #ifdef CONFIG_SYSCTL int ax25_register_dev_sysctl(ax25_dev *ax25_dev); void ax25_unregister_dev_sysctl(ax25_dev *ax25_dev); #else
static inline int ax25_register_dev_sysctl(ax25_dev *ax25_dev) { return 0; }

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Eric W. Biedermann1071.43%250.00%
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David S. Miller17.14%125.00%
Total14100.00%4100.00%


static inline void ax25_unregister_dev_sysctl(ax25_dev *ax25_dev) {}

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Total10100.00%3100.00%

#endif /* CONFIG_SYSCTL */ #endif

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Linus Torvalds (pre-git)157972.20%2433.80%
Ralf Bächle31914.59%1926.76%
David S. Miller793.61%57.04%
Jeroen Vreeken663.02%22.82%
Arnaldo Carvalho de Melo452.06%34.23%
Eric W. Biedermann391.78%57.04%
Jarek Poplawski140.64%22.82%
Stephen Hemminger140.64%22.82%
Joe Perches120.55%22.82%
Steven Whitehouse100.46%11.41%
Tejun Heo30.14%11.41%
Sasha Levin20.09%11.41%
Arjan van de Ven20.09%11.41%
Alexey Dobriyan10.05%11.41%
Arun Sharma10.05%11.41%
Al Viro10.05%11.41%
Total2187100.00%71100.00%
Directory: include/net
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