usr/src/sys/netccitt/x25.h

/*
 * Copyright (c) University of British Columbia, 1984
 * Copyright (c) 1990 The Regents of the University of California.
 * All rights reserved.
 *
 * This code is derived from software contributed to Berkeley by
 * the Laboratory for Computation Vision and the Computer Science Department
 * of the University of British Columbia.
 *
 * %sccs.include.redist.c%
 *
 *      @(#)x25.h       7.2 (Berkeley) %G%
 */

#ifdef KERNEL
#define PRC_IFUP        3
#define PRC_LINKUP      4
#define PRC_LINKDOWN    5
#define PRC_LINKRESET   6
#define PRC_LINKDONTCOPY        7
#endif

#define CCITTPROTO_HDLC         1
#define CCITTPROTO_X25          2       /* packet level protocol */
#define IEEEPROTO_802LLC        3       /* doesn't belong here */

#define HDLCPROTO_LAP           1
#define HDLCPROTO_LAPB          2
#define HDLCPROTO_UNSET         3
#define HDLCPROTO_LAPD          4

/*
 *  X.25 Socket address structure.  It contains the  X.121 or variation of
 *  X.121, facilities information, higher level protocol value (first four
 *  bytes of the User Data field), and the last  12 characters of the User
 *  Data field.
 */

struct x25_sockaddr {           /* obsolete - use sockaddr_x25 */
    short  xaddr_len;           /* Length of xaddr_addr.                */
    u_char xaddr_addr[15];      /* Network dependent or X.121 address.  */
    u_char xaddr_facilities;    /* Facilities information.              */
#define XS_REVERSE_CHARGE       0x01
#define XS_HIPRIO               0x02
    u_char xaddr_proto[4];      /* Protocol ID (4 bytes of user data).  */
    u_char xaddr_userdata[12];  /* Remaining User data field.           */
};

/*
 * network configuration info
 * this structure must be 16 bytes long
 */

struct  x25config {
        u_short xc_family;      /* always AF_CCITT */
        u_short xc_net;         /* network id (usually a dnic) */
        char    xc_ntnlen;
        char    xc_ntn[5];      /* network specific address (in bcd) */
        /* link level parameters */
        u_short xc_lproto:4,    /* link level protocol eg. CCITTPROTO_HDLC */
                xc_lptype:4,    /* protocol type eg. HDLCPROTO_LAPB */
                xc_lwsize:5,    /* link level window size */
                xc_ltrace:1,    /* link level tracing flag */
                xc_rsvd1:2;     /* for use by other link-level protocols */
        /* packet level parameters */
        u_short xc_pwsize:3,    /* default window size */
                xc_psize:4,     /* default packet size 7=128, 8=256, ... */
                xc_type:3,      /* network type */
#define X25_1976        0
#define X25_1980        1
#define X25_1984        2
#define X25_DDN         3
#define X25_BASIC       4
                xc_ptrace:1,    /* packet level tracing flag */
                xc_rsvd2:5;
        u_char  xc_maxlcn;      /* max logical channels */
        u_char  xc_rsvd3;
};

/*
 *  X.25 Socket address structure.  It contains the network id, X.121
 *  address, facilities information, higher level protocol value (first four
 *  bytes of the User Data field), and up to 12 characters of User Data.
 */

struct  sockaddr_x25 {
        u_char  x25_len;
        u_char  x25_family;     /* must be AF_CCITT */
        short   x25_net;        /* network id code (usually a dnic) */
        struct  x25opts {
                char    op_flags;       /* miscellaneous options */
#define X25_REVERSE_CHARGE      0x01    /* remote DTE pays for call */
#define X25_DBIT                0x02    /* not yet supported */
#define X25_MQBIT               0x04    /* prepend M&Q bit status byte to packet data */
#define X25_OLDSOCKADDR         0x08    /* uses old sockaddr structure */
                char    op_psize;       /* requested packet size */
#define X25_PS128               7
#define X25_PS256               8
#define X25_PS512               9
                char    op_wsize;       /* window size (1 .. 7) */
                char    op_speed;       /* throughput class */
        } x25_opts;
        char    x25_addr[16];   /* X.121 address (null terminated) */
        short   x25_udlen;      /* user data field length */
        char    x25_udata[16];  /* user data field */
};