1/* SPDX-License-Identifier: GPL-2.0 WITH Linux-syscall-note */
  2/*
  3 * These are the public elements of the Linux kernel AX.25 code. A similar
  4 * file netrom.h exists for the NET/ROM protocol.
  5 */
  6
  7#ifndef	AX25_KERNEL_H
  8#define	AX25_KERNEL_H
  9
 10#include <linux/socket.h>
 11
 12#define AX25_MTU	256
 13#define AX25_MAX_DIGIS  8
 14
 15#define AX25_WINDOW	1
 16#define AX25_T1		2
 17#define AX25_N2		3
 18#define AX25_T3		4
 19#define AX25_T2		5
 20#define	AX25_BACKOFF	6
 21#define	AX25_EXTSEQ	7
 22#define	AX25_PIDINCL	8
 23#define AX25_IDLE	9
 24#define AX25_PACLEN	10
 25#define AX25_IAMDIGI	12
 26
 27#define AX25_KILL	99
 28
 29#define SIOCAX25GETUID		(SIOCPROTOPRIVATE+0)
 30#define SIOCAX25ADDUID		(SIOCPROTOPRIVATE+1)
 31#define SIOCAX25DELUID		(SIOCPROTOPRIVATE+2)
 32#define SIOCAX25NOUID		(SIOCPROTOPRIVATE+3)
 33#define SIOCAX25OPTRT		(SIOCPROTOPRIVATE+7)
 34#define SIOCAX25CTLCON		(SIOCPROTOPRIVATE+8)
 35#define SIOCAX25GETINFOOLD	(SIOCPROTOPRIVATE+9)
 36#define SIOCAX25ADDFWD		(SIOCPROTOPRIVATE+10)
 37#define SIOCAX25DELFWD		(SIOCPROTOPRIVATE+11)
 38#define SIOCAX25DEVCTL          (SIOCPROTOPRIVATE+12)
 39#define SIOCAX25GETINFO         (SIOCPROTOPRIVATE+13)
 40
 41#define AX25_SET_RT_IPMODE	2
 42
 43#define AX25_NOUID_DEFAULT	0
 44#define AX25_NOUID_BLOCK	1
 45
 46typedef struct {
 47	char		ax25_call[7];	/* 6 call + SSID (shifted ascii!) */
 48} ax25_address;
 49
 50struct sockaddr_ax25 {
 51	__kernel_sa_family_t sax25_family;
 52	ax25_address	sax25_call;
 53	int		sax25_ndigis;
 54	/* Digipeater ax25_address sets follow */
 55};
 56
 57#define sax25_uid	sax25_ndigis
 58
 59struct full_sockaddr_ax25 {
 60	struct sockaddr_ax25 fsa_ax25;
 61	ax25_address	fsa_digipeater[AX25_MAX_DIGIS];
 62};
 63
 64struct ax25_routes_struct {
 65	ax25_address	port_addr;
 66	ax25_address	dest_addr;
 67	unsigned char	digi_count;
 68	ax25_address	digi_addr[AX25_MAX_DIGIS];
 69};
 70
 71struct ax25_route_opt_struct {
 72	ax25_address	port_addr;
 73	ax25_address	dest_addr;
 74	int		cmd;
 75	int		arg;
 76};
 77
 78struct ax25_ctl_struct {
 79        ax25_address            port_addr;
 80        ax25_address            source_addr;
 81        ax25_address            dest_addr;
 82        unsigned int            cmd;
 83        unsigned long           arg;
 84        unsigned char           digi_count;
 85        ax25_address            digi_addr[AX25_MAX_DIGIS];
 86};
 87
 88/* this will go away. Please do not export to user land */
 89struct ax25_info_struct_deprecated {
 90	unsigned int	n2, n2count;
 91	unsigned int	t1, t1timer;
 92	unsigned int	t2, t2timer;
 93	unsigned int	t3, t3timer;
 94	unsigned int	idle, idletimer;
 95	unsigned int	state;
 96	unsigned int	rcv_q, snd_q;
 97};
 98
 99struct ax25_info_struct {
100	unsigned int	n2, n2count;
101	unsigned int	t1, t1timer;
102	unsigned int	t2, t2timer;
103	unsigned int	t3, t3timer;
104	unsigned int	idle, idletimer;
105	unsigned int	state;
106	unsigned int	rcv_q, snd_q;
107	unsigned int	vs, vr, va, vs_max;
108	unsigned int	paclen;
109	unsigned int	window;
110};
111
112struct ax25_fwd_struct {
113	ax25_address	port_from;
114	ax25_address	port_to;
115};
116
117#endif