usr/src/sys/netiso/eonvar.h

/*-
 * Copyright (c) 1991 The Regents of the University of California.
 * All rights reserved.
 *
 * Redistribution and use in source and binary forms, with or without
 * modification, are permitted provided that the following conditions
 * are met:
 * 1. Redistributions of source code must retain the above copyright
 *    notice, this list of conditions and the following disclaimer.
 * 2. Redistributions in binary form must reproduce the above copyright
 *    notice, this list of conditions and the following disclaimer in the
 *    documentation and/or other materials provided with the distribution.
 * 3. All advertising materials mentioning features or use of this software
 *    must display the following acknowledgement:
 *      This product includes software developed by the University of
 *      California, Berkeley and its contributors.
 * 4. Neither the name of the University nor the names of its contributors
 *    may be used to endorse or promote products derived from this software
 *    without specific prior written permission.
 *
 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
 * ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
 * SUCH DAMAGE.
 *
 *      @(#)eonvar.h    7.5 (Berkeley) 5/6/91
 */

/***********************************************************
                Copyright IBM Corporation 1987

                      All Rights Reserved

Permission to use, copy, modify, and distribute this software and its
documentation for any purpose and without fee is hereby granted,
provided that the above copyright notice appear in all copies and that
both that copyright notice and this permission notice appear in
supporting documentation, and that the name of IBM not be
used in advertising or publicity pertaining to distribution of the
software without specific, written prior permission.

IBM DISCLAIMS ALL WARRANTIES WITH REGARD TO THIS SOFTWARE, INCLUDING
ALL IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS, IN NO EVENT SHALL
IBM BE LIABLE FOR ANY SPECIAL, INDIRECT OR CONSEQUENTIAL DAMAGES OR
ANY DAMAGES WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS,
WHETHER IN AN ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION,
ARISING OUT OF OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS
SOFTWARE.

******************************************************************/

/*
 * ARGO Project, Computer Sciences Dept., University of Wisconsin - Madison
 */

#define EON_986_VERSION 0x3
#define EON_VERSION 0x1

#define EON_CACHESIZE 30

#define E_FREE  1
#define E_LINK  2
#define E_ES    3
#define E_IS    4


/*
 * this overlays a sockaddr_iso
 */

struct sockaddr_eon {
        u_char                  seon_len;       /* Length */
        u_char                  seon_family;    /* AF_ISO */
        u_char                  seon_status;    /* overlays session suffixlen */
#define EON_ESLINK_UP           0x1
#define EON_ESLINK_DOWN         0x2
#define EON_ISLINK_UP           0x10
#define EON_ISLINK_DOWN         0x20
/* no change is neither up or down */
        u_char                  seon_pad1;      /* 0, overlays tsfxlen */
        u_char                  seon_adrlen;
        u_char                  seon_afi;               /* 47 */
        u_char                  seon_idi[2];    /* 0006 */
        u_char                  seon_vers;              /* 03 */
        u_char                  seon_glbnum[2]; /* see RFC 1069 */
        u_char                  seon_RDN[2];    /* see RFC 1070 */
        u_char                  seon_pad2[3];   /* see RFC 1070 */
        u_char                  seon_LAREA[2];  /* see RFC 1070 */
        u_char                  seon_pad3[2];   /* see RFC 1070 */
                /* right now ip addr is  aligned  -- be careful --
                 * future revisions may have it u_char[4]
                 */
        u_int                   seon_ipaddr;    /* a.b.c.d */
        u_char                  seon_protoid;   /* NSEL */
};

#ifdef EON_TEMPLATE
struct sockaddr_eon eon_template = {
        sizeof (eon_template), AF_ISO, 0, 0, 0x14,
        0x47, 0x0, 0x6, 0x3, 0
};
#endif

#define DOWNBITS ( EON_ESLINK_DOWN | EON_ISLINK_DOWN )
#define UPBITS ( EON_ESLINK_UP | EON_ISLINK_UP )

#define SIOCSEONCORE _IOWR('i',10, struct iso_ifreq) /* EON core member */
#define SIOCGEONCORE _IOWR('i',11, struct iso_ifreq) /* EON core member */

struct eon_hdr {
        u_char  eonh_vers; /* value 1 */
        u_char  eonh_class;  /* address multicast class, below */
#define         EON_NORMAL_ADDR         0x0
#define         EON_MULTICAST_ES        0x1
#define         EON_MULTICAST_IS        0x2
#define         EON_BROADCAST           0x3
        u_short eonh_csum;  /* osi checksum (choke)*/
};
struct eon_iphdr {
        struct  ip      ei_ip;
        struct  eon_hdr ei_eh;
};
#define EONIPLEN (sizeof(struct eon_hdr) + sizeof(struct ip))

/* stole these 2 fields of the flags for I-am-ES and I-am-IS */
#define IFF_ES  0x400
#define IFF_IS  0x800

struct eon_stat {
        int     es_in_multi_es;
        int     es_in_multi_is;
        int     es_in_broad;
        int     es_in_normal;
        int     es_out_multi_es;
        int     es_out_multi_is;
        int     es_out_broad;
        int     es_out_normal;
        int     es_ipout;

        int     es_icmp[PRC_NCMDS];
        /* errors */
        int     es_badcsum;
        int     es_badhdr;
} eonstat;

#undef IncStat
#define IncStat(xxx) eonstat.xxx++

typedef struct qhdr {
        struct qhdr *link, *rlink;
} *queue_t;

struct eon_llinfo {
        struct  qhdr el_qhdr;           /* keep all in a list */
        int     el_flags;               /* cache valid ? */
        int     el_snpaoffset;          /* IP address contained in dst nsap */
        struct  rtentry *el_rt;         /* back pointer to parent route */
        struct  eon_iphdr el_ei;        /* precomputed portion of hdr */
        struct  route el_iproute;       /* if direct route cache IP info */
                                        /* if gateway, cache secondary route */
};
#define el_iphdr el_ei.ei_ip
#define el_eonhdr el_ei.ei_eh