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1/* Copyright (C) 1997-2025 Free Software Foundation, Inc.
2 This file is part of the GNU C Library.
3
4 The GNU C Library is free software; you can redistribute it and/or
5 modify it under the terms of the GNU Lesser General Public
6 License as published by the Free Software Foundation; either
7 version 2.1 of the License, or (at your option) any later version.
8
9 The GNU C Library is distributed in the hope that it will be useful,
10 but WITHOUT ANY WARRANTY; without even the implied warranty of
11 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
12 Lesser General Public License for more details.
13
14 You should have received a copy of the GNU Lesser General Public
15 License along with the GNU C Library; if not, see
16 <https://www.gnu.org/licenses/>. */
17
18#ifndef _NETAX25_AX25_H
19#define _NETAX25_AX25_H 1
20
21#include <features.h>
22#include <bits/sockaddr.h>
23
24/* Setsockoptions(2) level. Thanks to BSD these must match IPPROTO_xxx. */
25#define SOL_AX25 257
26
27/* AX.25 flags: */
28#define AX25_WINDOW 1
29#define AX25_T1 2
30#define AX25_T2 5
31#define AX25_T3 4
32#define AX25_N2 3
33#define AX25_BACKOFF 6
34#define AX25_EXTSEQ 7
35#define AX25_PIDINCL 8
36#define AX25_IDLE 9
37#define AX25_PACLEN 10
38#define AX25_IPMAXQUEUE 11
39#define AX25_IAMDIGI 12
40#define AX25_KILL 99
41
42/* AX.25 socket ioctls: */
43#define SIOCAX25GETUID (SIOCPROTOPRIVATE)
44#define SIOCAX25ADDUID (SIOCPROTOPRIVATE+1)
45#define SIOCAX25DELUID (SIOCPROTOPRIVATE+2)
46#define SIOCAX25NOUID (SIOCPROTOPRIVATE+3)
47#define SIOCAX25BPQADDR (SIOCPROTOPRIVATE+4)
48#define SIOCAX25GETPARMS (SIOCPROTOPRIVATE+5)
49#define SIOCAX25SETPARMS (SIOCPROTOPRIVATE+6)
50#define SIOCAX25OPTRT (SIOCPROTOPRIVATE+7)
51#define SIOCAX25CTLCON (SIOCPROTOPRIVATE+8)
52#define SIOCAX25GETINFO (SIOCPROTOPRIVATE+9)
53#define SIOCAX25ADDFWD (SIOCPROTOPRIVATE+10)
54#define SIOCAX25DELFWD (SIOCPROTOPRIVATE+11)
55
56/* unknown: */
57#define AX25_NOUID_DEFAULT 0
58#define AX25_NOUID_BLOCK 1
59#define AX25_SET_RT_IPMODE 2
60
61/* Digipeating flags: */
62#define AX25_DIGI_INBAND 0x01 /* Allow digipeating within port */
63#define AX25_DIGI_XBAND 0x02 /* Allow digipeating across ports */
64
65/* Maximum number of digipeaters: */
66#define AX25_MAX_DIGIS 8
67
68
69typedef struct
70 {
71 char ax25_call[7]; /* 6 call + SSID (shifted ascii) */
72 }
73ax25_address;
74
75struct sockaddr_ax25
76 {
77 sa_family_t sax25_family;
78 ax25_address sax25_call;
79 int sax25_ndigis;
80 };
81
82/*
83 * The sockaddr struct with the digipeater addresses:
84 */
85struct full_sockaddr_ax25
86 {
87 struct sockaddr_ax25 fsa_ax25;
88 ax25_address fsa_digipeater[AX25_MAX_DIGIS];
89 };
90#define sax25_uid sax25_ndigis
91
92struct ax25_routes_struct
93 {
94 ax25_address port_addr;
95 ax25_address dest_addr;
96 unsigned char digi_count;
97 ax25_address digi_addr[AX25_MAX_DIGIS];
98 };
99
100/* The AX.25 ioctl structure: */
101struct ax25_ctl_struct
102 {
103 ax25_address port_addr;
104 ax25_address source_addr;
105 ax25_address dest_addr;
106 unsigned int cmd;
107 unsigned long arg;
108 unsigned char digi_count;
109 ax25_address digi_addr[AX25_MAX_DIGIS];
110 };
111
112struct ax25_info_struct
113 {
114 unsigned int n2, n2count;
115 unsigned int t1, t1timer;
116 unsigned int t2, t2timer;
117 unsigned int t3, t3timer;
118 unsigned int idle, idletimer;
119 unsigned int state;
120 unsigned int rcv_q, snd_q;
121 };
122
123struct ax25_fwd_struct
124 {
125 ax25_address port_from;
126 ax25_address port_to;
127 };
128
129/* AX.25 route structure: */
130struct ax25_route_opt_struct
131 {
132 ax25_address port_addr;
133 ax25_address dest_addr;
134 int cmd;
135 int arg;
136 };
137
138/* AX.25 BPQ stuff: */
139struct ax25_bpqaddr_struct
140 {
141 char dev[16];
142 ax25_address addr;
143 };
144
145/* Definitions for the AX.25 `values' fields: */
146#define AX25_VALUES_IPDEFMODE 0 /* 'D'=DG 'V'=VC */
147#define AX25_VALUES_AXDEFMODE 1 /* 8=Normal 128=Extended Seq Nos */
148#define AX25_VALUES_NETROM 2 /* Allow NET/ROM - 0=No 1=Yes */
149#define AX25_VALUES_TEXT 3 /* Allow PID=Text - 0=No 1=Yes */
150#define AX25_VALUES_BACKOFF 4 /* 'E'=Exponential 'L'=Linear */
151#define AX25_VALUES_CONMODE 5 /* Allow connected modes - 0=No 1=Yes */
152#define AX25_VALUES_WINDOW 6 /* Default window size for standard AX.25 */
153#define AX25_VALUES_EWINDOW 7 /* Default window size for extended AX.25 */
154#define AX25_VALUES_T1 8 /* Default T1 timeout value */
155#define AX25_VALUES_T2 9 /* Default T2 timeout value */
156#define AX25_VALUES_T3 10 /* Default T3 timeout value */
157#define AX25_VALUES_N2 11 /* Default N2 value */
158#define AX25_VALUES_DIGI 12 /* Digipeat mode */
159#define AX25_VALUES_IDLE 13 /* mode vc idle timer */
160#define AX25_VALUES_PACLEN 14 /* AX.25 MTU */
161#define AX25_VALUES_IPMAXQUEUE 15 /* Maximum number of buffers enqueued */
162#define AX25_MAX_VALUES 20
163
164struct ax25_parms_struct
165 {
166 ax25_address port_addr;
167 unsigned short values[AX25_MAX_VALUES];
168 };
169
170#endif /* netax25/ax25.h */