root/include/linux/x25.h

INCLUDED FROM

/*
 * 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>

#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)

/*
 *      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 {
        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