xref: /OK3568_Linux_fs/kernel/include/uapi/linux/x25.h (revision 4882a59341e53eb6f0b4789bf948001014eff981) 
1*4882a593Smuzhiyun /* SPDX-License-Identifier: GPL-2.0 WITH Linux-syscall-note */
2*4882a593Smuzhiyun /*
3*4882a593Smuzhiyun  * These are the public elements of the Linux kernel X.25 implementation.
4*4882a593Smuzhiyun  *
5*4882a593Smuzhiyun  * 	History
6*4882a593Smuzhiyun  *	mar/20/00	Daniela Squassoni Disabling/enabling of facilities
7*4882a593Smuzhiyun  *					  negotiation.
8*4882a593Smuzhiyun  *	apr/02/05	Shaun Pereira Selective sub address matching with
9*4882a593Smuzhiyun  *					call user data
10*4882a593Smuzhiyun  */
11*4882a593Smuzhiyun 
12*4882a593Smuzhiyun #ifndef	X25_KERNEL_H
13*4882a593Smuzhiyun #define	X25_KERNEL_H
14*4882a593Smuzhiyun 
15*4882a593Smuzhiyun #include <linux/types.h>
16*4882a593Smuzhiyun #include <linux/socket.h>
17*4882a593Smuzhiyun 
18*4882a593Smuzhiyun #define	SIOCX25GSUBSCRIP	(SIOCPROTOPRIVATE + 0)
19*4882a593Smuzhiyun #define	SIOCX25SSUBSCRIP	(SIOCPROTOPRIVATE + 1)
20*4882a593Smuzhiyun #define	SIOCX25GFACILITIES	(SIOCPROTOPRIVATE + 2)
21*4882a593Smuzhiyun #define	SIOCX25SFACILITIES	(SIOCPROTOPRIVATE + 3)
22*4882a593Smuzhiyun #define	SIOCX25GCALLUSERDATA	(SIOCPROTOPRIVATE + 4)
23*4882a593Smuzhiyun #define	SIOCX25SCALLUSERDATA	(SIOCPROTOPRIVATE + 5)
24*4882a593Smuzhiyun #define	SIOCX25GCAUSEDIAG	(SIOCPROTOPRIVATE + 6)
25*4882a593Smuzhiyun #define SIOCX25SCUDMATCHLEN	(SIOCPROTOPRIVATE + 7)
26*4882a593Smuzhiyun #define SIOCX25CALLACCPTAPPRV   (SIOCPROTOPRIVATE + 8)
27*4882a593Smuzhiyun #define SIOCX25SENDCALLACCPT    (SIOCPROTOPRIVATE + 9)
28*4882a593Smuzhiyun #define SIOCX25GDTEFACILITIES (SIOCPROTOPRIVATE + 10)
29*4882a593Smuzhiyun #define SIOCX25SDTEFACILITIES (SIOCPROTOPRIVATE + 11)
30*4882a593Smuzhiyun #define SIOCX25SCAUSEDIAG	(SIOCPROTOPRIVATE + 12)
31*4882a593Smuzhiyun 
32*4882a593Smuzhiyun /*
33*4882a593Smuzhiyun  *	Values for {get,set}sockopt.
34*4882a593Smuzhiyun  */
35*4882a593Smuzhiyun #define	X25_QBITINCL		1
36*4882a593Smuzhiyun 
37*4882a593Smuzhiyun /*
38*4882a593Smuzhiyun  *	X.25 Packet Size values.
39*4882a593Smuzhiyun  */
40*4882a593Smuzhiyun #define	X25_PS16		4
41*4882a593Smuzhiyun #define	X25_PS32		5
42*4882a593Smuzhiyun #define	X25_PS64		6
43*4882a593Smuzhiyun #define	X25_PS128		7
44*4882a593Smuzhiyun #define	X25_PS256		8
45*4882a593Smuzhiyun #define	X25_PS512		9
46*4882a593Smuzhiyun #define	X25_PS1024		10
47*4882a593Smuzhiyun #define	X25_PS2048		11
48*4882a593Smuzhiyun #define	X25_PS4096		12
49*4882a593Smuzhiyun 
50*4882a593Smuzhiyun /*
51*4882a593Smuzhiyun  * An X.121 address, it is held as ASCII text, null terminated, up to 15
52*4882a593Smuzhiyun  * digits and a null terminator.
53*4882a593Smuzhiyun  */
54*4882a593Smuzhiyun struct x25_address {
55*4882a593Smuzhiyun 	char x25_addr[16];
56*4882a593Smuzhiyun };
57*4882a593Smuzhiyun 
58*4882a593Smuzhiyun /*
59*4882a593Smuzhiyun  *	Linux X.25 Address structure, used for bind, and connect mostly.
60*4882a593Smuzhiyun  */
61*4882a593Smuzhiyun struct sockaddr_x25 {
62*4882a593Smuzhiyun 	__kernel_sa_family_t sx25_family;	/* Must be AF_X25 */
63*4882a593Smuzhiyun 	struct x25_address sx25_addr;		/* X.121 Address */
64*4882a593Smuzhiyun };
65*4882a593Smuzhiyun 
66*4882a593Smuzhiyun /*
67*4882a593Smuzhiyun  *	DTE/DCE subscription options.
68*4882a593Smuzhiyun  *
69*4882a593Smuzhiyun  *      As this is missing lots of options, user should expect major
70*4882a593Smuzhiyun  *	changes of this structure in 2.5.x which might break compatibilty.
71*4882a593Smuzhiyun  *      The somewhat ugly dimension 200-sizeof() is needed to maintain
72*4882a593Smuzhiyun  *	backward compatibility.
73*4882a593Smuzhiyun  */
74*4882a593Smuzhiyun struct x25_subscrip_struct {
75*4882a593Smuzhiyun 	char device[200-sizeof(unsigned long)];
76*4882a593Smuzhiyun 	unsigned long	global_facil_mask;	/* 0 to disable negotiation */
77*4882a593Smuzhiyun 	unsigned int	extended;
78*4882a593Smuzhiyun };
79*4882a593Smuzhiyun 
80*4882a593Smuzhiyun /* values for above global_facil_mask */
81*4882a593Smuzhiyun 
82*4882a593Smuzhiyun #define	X25_MASK_REVERSE	0x01
83*4882a593Smuzhiyun #define	X25_MASK_THROUGHPUT	0x02
84*4882a593Smuzhiyun #define	X25_MASK_PACKET_SIZE	0x04
85*4882a593Smuzhiyun #define	X25_MASK_WINDOW_SIZE	0x08
86*4882a593Smuzhiyun 
87*4882a593Smuzhiyun #define X25_MASK_CALLING_AE 0x10
88*4882a593Smuzhiyun #define X25_MASK_CALLED_AE 0x20
89*4882a593Smuzhiyun 
90*4882a593Smuzhiyun 
91*4882a593Smuzhiyun /*
92*4882a593Smuzhiyun  *	Routing table control structure.
93*4882a593Smuzhiyun  */
94*4882a593Smuzhiyun struct x25_route_struct {
95*4882a593Smuzhiyun 	struct x25_address address;
96*4882a593Smuzhiyun 	unsigned int	   sigdigits;
97*4882a593Smuzhiyun 	char		   device[200];
98*4882a593Smuzhiyun };
99*4882a593Smuzhiyun 
100*4882a593Smuzhiyun /*
101*4882a593Smuzhiyun  *	Facilities structure.
102*4882a593Smuzhiyun  */
103*4882a593Smuzhiyun struct x25_facilities {
104*4882a593Smuzhiyun 	unsigned int	winsize_in, winsize_out;
105*4882a593Smuzhiyun 	unsigned int	pacsize_in, pacsize_out;
106*4882a593Smuzhiyun 	unsigned int	throughput;
107*4882a593Smuzhiyun 	unsigned int	reverse;
108*4882a593Smuzhiyun };
109*4882a593Smuzhiyun 
110*4882a593Smuzhiyun /*
111*4882a593Smuzhiyun * ITU DTE facilities
112*4882a593Smuzhiyun * Only the called and calling address
113*4882a593Smuzhiyun * extension are currently implemented.
114*4882a593Smuzhiyun * The rest are in place to avoid the struct
115*4882a593Smuzhiyun * changing size if someone needs them later
116*4882a593Smuzhiyun */
117*4882a593Smuzhiyun 
118*4882a593Smuzhiyun struct x25_dte_facilities {
119*4882a593Smuzhiyun 	__u16 delay_cumul;
120*4882a593Smuzhiyun 	__u16 delay_target;
121*4882a593Smuzhiyun 	__u16 delay_max;
122*4882a593Smuzhiyun 	__u8 min_throughput;
123*4882a593Smuzhiyun 	__u8 expedited;
124*4882a593Smuzhiyun 	__u8 calling_len;
125*4882a593Smuzhiyun 	__u8 called_len;
126*4882a593Smuzhiyun 	__u8 calling_ae[20];
127*4882a593Smuzhiyun 	__u8 called_ae[20];
128*4882a593Smuzhiyun };
129*4882a593Smuzhiyun 
130*4882a593Smuzhiyun /*
131*4882a593Smuzhiyun  *	Call User Data structure.
132*4882a593Smuzhiyun  */
133*4882a593Smuzhiyun struct x25_calluserdata {
134*4882a593Smuzhiyun 	unsigned int	cudlength;
135*4882a593Smuzhiyun 	unsigned char	cuddata[128];
136*4882a593Smuzhiyun };
137*4882a593Smuzhiyun 
138*4882a593Smuzhiyun /*
139*4882a593Smuzhiyun  *	Call clearing Cause and Diagnostic structure.
140*4882a593Smuzhiyun  */
141*4882a593Smuzhiyun struct x25_causediag {
142*4882a593Smuzhiyun 	unsigned char	cause;
143*4882a593Smuzhiyun 	unsigned char	diagnostic;
144*4882a593Smuzhiyun };
145*4882a593Smuzhiyun 
146*4882a593Smuzhiyun /*
147*4882a593Smuzhiyun  *	Further optional call user data match length selection
148*4882a593Smuzhiyun  */
149*4882a593Smuzhiyun struct x25_subaddr {
150*4882a593Smuzhiyun 	unsigned int cudmatchlength;
151*4882a593Smuzhiyun };
152*4882a593Smuzhiyun 
153*4882a593Smuzhiyun #endif
154