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Diffstat (limited to 'sys/netiso/esis.h')
| -rw-r--r-- | sys/netiso/esis.h | 141 |
1 files changed, 141 insertions, 0 deletions
diff --git a/sys/netiso/esis.h b/sys/netiso/esis.h new file mode 100644 index 0000000..1b864c9 --- /dev/null +++ b/sys/netiso/esis.h @@ -0,0 +1,141 @@ +/*- + * 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 + * $Id: esis.h,v 1.2 1994/08/02 07:50:11 davidg Exp $ + */ + +#ifndef _NETISO_ESIS_H_ +#define _NETISO_ESIS_H_ + +/*********************************************************** + 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: /home/ncvs/src/sys/netiso/esis.h,v 1.2 1994/08/02 07:50:11 davidg Exp $ + * $Source: /home/ncvs/src/sys/netiso/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 */ + +#endif |
