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- /*-
- * Copyright (c) 1991, 1993
- * 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.
- *
- * @(#)esis.h 8.1 (Berkeley) 6/10/93
- */
-
- /***********************************************************
- 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
- */
- /*
- * $Header: esis.h,v 4.7 88/09/15 11:24:18 hagens Exp $
- * $Source: /usr/argo/sys/netiso/RCS/esis.h,v $
- */
-
- #ifndef BYTE_ORDER
- /*
- * Definitions for byte order,
- * according to byte significance from low address to high.
- */
- #define LITTLE_ENDIAN 1234 /* least-significant byte first (vax) */
- #define BIG_ENDIAN 4321 /* most-significant byte first (IBM, net) */
- #define PDP_ENDIAN 3412 /* LSB first in word, MSW first in long (pdp) */
-
- #ifdef vax
- #define BYTE_ORDER LITTLE_ENDIAN
- #else
- #define BYTE_ORDER BIG_ENDIAN /* mc68000, tahoe, most others */
- #endif
- #endif /* BYTE_ORDER */
-
- #define SNPAC_AGE 60 /* seconds */
- #define ESIS_CONFIG 60 /* seconds */
- #define ESIS_HT (ESIS_CONFIG * 2)
-
- /*
- * Fixed part of an ESIS header
- */
- struct esis_fixed {
- u_char esis_proto_id; /* network layer protocol identifier */
- u_char esis_hdr_len; /* length indicator (octets) */
- u_char esis_vers; /* version/protocol identifier extension */
- u_char esis_res1; /* reserved */
- u_char esis_type; /* type code */
- /* technically, type should be &='d 0x1f */
- #define ESIS_ESH 0x02 /* End System Hello */
- #define ESIS_ISH 0x04 /* Intermediate System Hello */
- #define ESIS_RD 0x06 /* Redirect */
- u_char esis_ht_msb; /* holding time (seconds) high byte */
- u_char esis_ht_lsb; /* holding time (seconds) low byte */
- u_char esis_cksum_msb; /* checksum high byte */
- u_char esis_cksum_lsb; /* checksum low byte */
- };
- /*
- * Values for ESIS datagram options
- */
- #define ESISOVAL_NETMASK 0xe1 /* address mask option, RD PDU only */
- #define ESISOVAL_SNPAMASK 0xe2 /* snpa mask option, RD PDU only */
- #define ESISOVAL_ESCT 0xc6 /* end system conf. timer, ISH PDU only */
-
-
- #define ESIS_CKSUM_OFF 0x07
- #define ESIS_CKSUM_REQUIRED(pdu)\
- ((pdu->esis_cksum_msb != 0) || (pdu->esis_cksum_lsb != 0))
-
- #define ESIS_VERSION 1
-
- struct esis_stat {
- u_short es_nomem; /* insufficient memory to send hello */
- u_short es_badcsum; /* incorrect checksum */
- u_short es_badvers; /* incorrect version number */
- u_short es_badtype; /* unknown pdu type field */
- u_short es_toosmall; /* packet too small */
- u_short es_eshsent; /* ESH sent */
- u_short es_eshrcvd; /* ESH rcvd */
- u_short es_ishsent; /* ISH sent */
- u_short es_ishrcvd; /* ISH rcvd */
- u_short es_rdsent; /* RD sent */
- u_short es_rdrcvd; /* RD rcvd */
- };
-
- #ifdef KERNEL
- struct esis_stat esis_stat;
- #endif /* KERNEL */
-