linux-headers (unknown)
1 /* SPDX-License-Identifier: GPL-2.0 WITH Linux-syscall-note */
2 /*
3 * These are the public elements of the Linux kernel X.25 implementation.
4 *
5 * History
6 * mar/20/00 Daniela Squassoni Disabling/enabling of facilities
7 * negotiation.
8 * apr/02/05 Shaun Pereira Selective sub address matching with
9 * call user data
10 */
11
12 #ifndef X25_KERNEL_H
13 #define X25_KERNEL_H
14
15 #include <linux/types.h>
16 #include <linux/socket.h>
17
18 #define SIOCX25GSUBSCRIP (SIOCPROTOPRIVATE + 0)
19 #define SIOCX25SSUBSCRIP (SIOCPROTOPRIVATE + 1)
20 #define SIOCX25GFACILITIES (SIOCPROTOPRIVATE + 2)
21 #define SIOCX25SFACILITIES (SIOCPROTOPRIVATE + 3)
22 #define SIOCX25GCALLUSERDATA (SIOCPROTOPRIVATE + 4)
23 #define SIOCX25SCALLUSERDATA (SIOCPROTOPRIVATE + 5)
24 #define SIOCX25GCAUSEDIAG (SIOCPROTOPRIVATE + 6)
25 #define SIOCX25SCUDMATCHLEN (SIOCPROTOPRIVATE + 7)
26 #define SIOCX25CALLACCPTAPPRV (SIOCPROTOPRIVATE + 8)
27 #define SIOCX25SENDCALLACCPT (SIOCPROTOPRIVATE + 9)
28 #define SIOCX25GDTEFACILITIES (SIOCPROTOPRIVATE + 10)
29 #define SIOCX25SDTEFACILITIES (SIOCPROTOPRIVATE + 11)
30 #define SIOCX25SCAUSEDIAG (SIOCPROTOPRIVATE + 12)
31
32 /*
33 * Values for {get,set}sockopt.
34 */
35 #define X25_QBITINCL 1
36
37 /*
38 * X.25 Packet Size values.
39 */
40 #define X25_PS16 4
41 #define X25_PS32 5
42 #define X25_PS64 6
43 #define X25_PS128 7
44 #define X25_PS256 8
45 #define X25_PS512 9
46 #define X25_PS1024 10
47 #define X25_PS2048 11
48 #define X25_PS4096 12
49
50 /*
51 * An X.121 address, it is held as ASCII text, null terminated, up to 15
52 * digits and a null terminator.
53 */
54 struct x25_address {
55 char x25_addr[16];
56 };
57
58 /*
59 * Linux X.25 Address structure, used for bind, and connect mostly.
60 */
61 struct sockaddr_x25 {
62 __kernel_sa_family_t sx25_family; /* Must be AF_X25 */
63 struct x25_address sx25_addr; /* X.121 Address */
64 };
65
66 /*
67 * DTE/DCE subscription options.
68 *
69 * As this is missing lots of options, user should expect major
70 * changes of this structure in 2.5.x which might break compatibilty.
71 * The somewhat ugly dimension 200-sizeof() is needed to maintain
72 * backward compatibility.
73 */
74 struct x25_subscrip_struct {
75 char device[200-sizeof(unsigned long)];
76 unsigned long global_facil_mask; /* 0 to disable negotiation */
77 unsigned int extended;
78 };
79
80 /* values for above global_facil_mask */
81
82 #define X25_MASK_REVERSE 0x01
83 #define X25_MASK_THROUGHPUT 0x02
84 #define X25_MASK_PACKET_SIZE 0x04
85 #define X25_MASK_WINDOW_SIZE 0x08
86
87 #define X25_MASK_CALLING_AE 0x10
88 #define X25_MASK_CALLED_AE 0x20
89
90
91 /*
92 * Routing table control structure.
93 */
94 struct x25_route_struct {
95 struct x25_address address;
96 unsigned int sigdigits;
97 char device[200];
98 };
99
100 /*
101 * Facilities structure.
102 */
103 struct x25_facilities {
104 unsigned int winsize_in, winsize_out;
105 unsigned int pacsize_in, pacsize_out;
106 unsigned int throughput;
107 unsigned int reverse;
108 };
109
110 /*
111 * ITU DTE facilities
112 * Only the called and calling address
113 * extension are currently implemented.
114 * The rest are in place to avoid the struct
115 * changing size if someone needs them later
116 */
117
118 struct x25_dte_facilities {
119 __u16 delay_cumul;
120 __u16 delay_target;
121 __u16 delay_max;
122 __u8 min_throughput;
123 __u8 expedited;
124 __u8 calling_len;
125 __u8 called_len;
126 __u8 calling_ae[20];
127 __u8 called_ae[20];
128 };
129
130 /*
131 * Call User Data structure.
132 */
133 struct x25_calluserdata {
134 unsigned int cudlength;
135 unsigned char cuddata[128];
136 };
137
138 /*
139 * Call clearing Cause and Diagnostic structure.
140 */
141 struct x25_causediag {
142 unsigned char cause;
143 unsigned char diagnostic;
144 };
145
146 /*
147 * Further optional call user data match length selection
148 */
149 struct x25_subaddr {
150 unsigned int cudmatchlength;
151 };
152
153 #endif
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