Quelle x25.h Sprache: C

/* SPDX-License-Identifier: GPL-2.0 WITH Linux-syscall-note */
/*
* These are the public elements of the Linux kernel X.25 implementation.
*
* History
* mar/20/00 Daniela Squassoni Disabling/enabling of facilities
*   negotiation.
* apr/02/05 Shaun Pereira Selective sub address matching with
* call user data
*/

#ifndef X25_KERNEL_H
#define X25_KERNEL_H

#include <linux/types.h>
#include <linux/socket.h>

#define SIOCX25GSUBSCRIP (SIOCPROTOPRIVATE + 0)
#define SIOCX25SSUBSCRIP (SIOCPROTOPRIVATE + 1)
#define SIOCX25GFACILITIES (SIOCPROTOPRIVATE + 2)
#define SIOCX25SFACILITIES (SIOCPROTOPRIVATE + 3)
#define SIOCX25GCALLUSERDATA (SIOCPROTOPRIVATE + 4)
#define SIOCX25SCALLUSERDATA (SIOCPROTOPRIVATE + 5)
#define SIOCX25GCAUSEDIAG (SIOCPROTOPRIVATE + 6)
#define SIOCX25SCUDMATCHLEN (SIOCPROTOPRIVATE + 7)
#define SIOCX25CALLACCPTAPPRV   (SIOCPROTOPRIVATE + 8)
#define SIOCX25SENDCALLACCPT    (SIOCPROTOPRIVATE + 9)
#define SIOCX25GDTEFACILITIES (SIOCPROTOPRIVATE + 10)
#define SIOCX25SDTEFACILITIES (SIOCPROTOPRIVATE + 11)
#define SIOCX25SCAUSEDIAG (SIOCPROTOPRIVATE + 12)

/*
* Values for {get,set}sockopt.
*/
#define X25_QBITINCL  1

/*
* X.25 Packet Size values.
*/
#define X25_PS16  4
#define X25_PS32  5
#define X25_PS64  6
#define X25_PS128  7
#define X25_PS256  8
#define X25_PS512  9
#define X25_PS1024  10
#define X25_PS2048  11
#define X25_PS4096  12

/*
* An X.121 address, it is held as ASCII text, null terminated, up to 15
* digits and a null terminator.
*/
struct x25_address {
char x25_addr[16];
};

/*
* Linux X.25 Address structure, used for bind, and connect mostly.
*/
struct sockaddr_x25 {
__kernel_sa_family_t sx25_family; /* Must be AF_X25 */
struct x25_address sx25_addr;  /* X.121 Address */
};

/*
* DTE/DCE subscription options.
*
*      As this is missing lots of options, user should expect major
* changes of this structure in 2.5.x which might break compatibilty.
*      The somewhat ugly dimension 200-sizeof() is needed to maintain
* backward compatibility.
*/
struct x25_subscrip_struct {
char device[200-sizeof(unsigned long)];
unsigned long global_facil_mask; /* 0 to disable negotiation */
unsigned int extended;
};

/* values for above global_facil_mask */

#define X25_MASK_REVERSE 0x01
#define X25_MASK_THROUGHPUT 0x02
#define X25_MASK_PACKET_SIZE 0x04
#define X25_MASK_WINDOW_SIZE 0x08

#define X25_MASK_CALLING_AE 0x10
#define X25_MASK_CALLED_AE 0x20

/*
* Routing table control structure.
*/
struct x25_route_struct {
struct x25_address address;
unsigned int    sigdigits;
char     device[200];
};

/*
* Facilities structure.
*/
struct x25_facilities {
unsigned int winsize_in, winsize_out;
unsigned int pacsize_in, pacsize_out;
unsigned int throughput;
unsigned int reverse;
};

/*
* ITU DTE facilities
* Only the called and calling address
* extension are currently implemented.
* The rest are in place to avoid the struct
* changing size if someone needs them later
*/

struct x25_dte_facilities {
__u16 delay_cumul;
__u16 delay_target;
__u16 delay_max;
__u8 min_throughput;
__u8 expedited;
__u8 calling_len;
__u8 called_len;
__u8 calling_ae[20];
__u8 called_ae[20];
};

/*
* Call User Data structure.
*/
struct x25_calluserdata {
unsigned int cudlength;
unsigned char cuddata[128];
};

/*
* Call clearing Cause and Diagnostic structure.
*/
struct x25_causediag {
unsigned char cause;
unsigned char diagnostic;
};

/*
* Further optional call user data match length selection
*/
struct x25_subaddr {
unsigned int cudmatchlength;
};

#endif

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