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
118