| jardin | eb5d44e | 2003-12-23 08:09:43 +0000 | [diff] [blame^] | 1 | /* $NetBSD: esis.h,v 1.11 1997/11/03 15:01:19 is Exp $ */
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| 2 |
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| 3 | /*-
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| 4 | * Copyright (c) 1991, 1993
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| 5 | * The Regents of the University of California. All rights reserved.
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| 6 | *
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| 7 | * Redistribution and use in source and binary forms, with or without
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| 8 | * modification, are permitted provided that the following conditions
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| 9 | * are met:
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| 10 | * 1. Redistributions of source code must retain the above copyright
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| 11 | * notice, this list of conditions and the following disclaimer.
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| 12 | * 2. Redistributions in binary form must reproduce the above copyright
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| 13 | * notice, this list of conditions and the following disclaimer in the
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| 14 | * documentation and/or other materials provided with the distribution.
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| 15 | * 3. All advertising materials mentioning features or use of this software
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| 16 | * must display the following acknowledgement:
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| 17 | * This product includes software developed by the University of
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| 18 | * California, Berkeley and its contributors.
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| 19 | * 4. Neither the name of the University nor the names of its contributors
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| 20 | * may be used to endorse or promote products derived from this software
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| 21 | * without specific prior written permission.
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| 22 | *
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| 23 | * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
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| 24 | * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
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| 25 | * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
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| 26 | * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
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| 27 | * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
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| 28 | * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
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| 29 | * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
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| 30 | * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
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| 31 | * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
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| 32 | * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
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| 33 | * SUCH DAMAGE.
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| 34 | *
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| 35 | * @(#)esis.h 8.1 (Berkeley) 6/10/93
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| 36 | */
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| 37 |
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| 38 | /***********************************************************
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| 39 | Copyright IBM Corporation 1987
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| 40 |
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| 41 | All Rights Reserved
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| 42 |
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| 43 | Permission to use, copy, modify, and distribute this software and its
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| 44 | documentation for any purpose and without fee is hereby granted,
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| 45 | provided that the above copyright notice appear in all copies and that
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| 46 | both that copyright notice and this permission notice appear in
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| 47 | supporting documentation, and that the name of IBM not be
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| 48 | used in advertising or publicity pertaining to distribution of the
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| 49 | software without specific, written prior permission.
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| 50 |
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| 51 | IBM DISCLAIMS ALL WARRANTIES WITH REGARD TO THIS SOFTWARE, INCLUDING
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| 52 | ALL IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS, IN NO EVENT SHALL
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| 53 | IBM BE LIABLE FOR ANY SPECIAL, INDIRECT OR CONSEQUENTIAL DAMAGES OR
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| 54 | ANY DAMAGES WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS,
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| 55 | WHETHER IN AN ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION,
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| 56 | ARISING OUT OF OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS
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| 57 | SOFTWARE.
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| 58 |
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| 59 | ******************************************************************/
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| 60 |
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| 61 | /*
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| 62 | * ARGO Project, Computer Sciences Dept., University of Wisconsin - Madison
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| 63 | */
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| 64 |
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| 65 | #include <machine/endian.h>
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| 66 |
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| 67 | #define SNPAC_AGE 60 /* seconds */
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| 68 | #define ESIS_CONFIG 60 /* seconds */
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| 69 | #define ESIS_HT (ESIS_CONFIG * 2)
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| 70 |
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| 71 | /*
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| 72 | * Fixed part of an ESIS header
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| 73 | */
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| 74 | struct esis_fixed {
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| 75 | u_char esis_proto_id; /* network layer protocol identifier */
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| 76 | u_char esis_hdr_len; /* length indicator (octets) */
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| 77 | u_char esis_vers; /* version/protocol identifier
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| 78 | * extension */
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| 79 | u_char esis_res1; /* reserved */
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| 80 | u_char esis_type; /* type code */
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| 81 | /* technically, type should be &='d 0x1f */
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| 82 | #define ESIS_ESH 0x02 /* End System Hello */
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| 83 | #define ESIS_ISH 0x04 /* Intermediate System Hello */
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| 84 | #define ESIS_RD 0x06 /* Redirect */
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| 85 | u_char esis_ht_msb; /* holding time (seconds) high byte */
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| 86 | u_char esis_ht_lsb; /* holding time (seconds) low byte */
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| 87 | u_char esis_cksum_msb; /* checksum high byte */
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| 88 | u_char esis_cksum_lsb; /* checksum low byte */
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| 89 | } __attribute__((packed));
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| 90 | /*
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| 91 | * Values for ESIS datagram options
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| 92 | */
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| 93 | #define ESISOVAL_NETMASK 0xe1 /* address mask option, RD PDU only */
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| 94 | #define ESISOVAL_SNPAMASK 0xe2 /* snpa mask option, RD PDU only */
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| 95 | #define ESISOVAL_ESCT 0xc6 /* end system conf. timer, ISH PDU
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| 96 | * only */
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| 97 |
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| 98 |
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| 99 | #define ESIS_CKSUM_OFF 0x07
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| 100 | #define ESIS_CKSUM_REQUIRED(pdu)\
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| 101 | ((pdu->esis_cksum_msb != 0) || (pdu->esis_cksum_lsb != 0))
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| 102 |
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| 103 | #define ESIS_VERSION 1
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| 104 |
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| 105 | struct esis_stat {
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| 106 | u_short es_nomem; /* insufficient memory to send hello */
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| 107 | u_short es_badcsum; /* incorrect checksum */
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| 108 | u_short es_badvers; /* incorrect version number */
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| 109 | u_short es_badtype; /* unknown pdu type field */
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| 110 | u_short es_toosmall; /* packet too small */
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| 111 | u_short es_eshsent; /* ESH sent */
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| 112 | u_short es_eshrcvd; /* ESH rcvd */
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| 113 | u_short es_ishsent; /* ISH sent */
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| 114 | u_short es_ishrcvd; /* ISH rcvd */
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| 115 | u_short es_rdsent; /* RD sent */
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| 116 | u_short es_rdrcvd; /* RD rcvd */
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| 117 | };
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| 118 |
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| 119 | #ifdef _KERNEL
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| 120 | struct esis_stat esis_stat;
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| 121 | struct socket;
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| 122 | struct mbuf;
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| 123 | struct snpa_hdr;
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| 124 | struct clnp_optidx;
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| 125 | struct iso_addr;
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| 126 | struct rtentry;
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| 127 | struct sockaddr_dl;
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| 128 |
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| 129 | void esis_init __P((void));
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| 130 | int esis_usrreq __P((struct socket *, int, struct mbuf *, struct mbuf *,
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| 131 | struct mbuf *, struct proc *));
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| 132 | void esis_input __P((struct mbuf *, ...));
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| 133 | void esis_rdoutput __P((struct snpa_hdr *, struct mbuf *, struct clnp_optidx *,
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| 134 | struct iso_addr *, struct rtentry *));
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| 135 | int esis_insert_addr __P((caddr_t *, int *, struct iso_addr *, struct mbuf *,
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| 136 | int));
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| 137 | void esis_eshinput __P((struct mbuf *, struct snpa_hdr *));
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| 138 | void esis_ishinput __P((struct mbuf *, struct snpa_hdr *));
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| 139 | void esis_rdinput __P((struct mbuf *, struct snpa_hdr *));
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| 140 | void esis_config __P((void *));
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| 141 | void esis_shoutput __P((struct ifnet *, int, int, caddr_t, int,
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| 142 | struct iso_addr *));
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| 143 | void isis_input __P((struct mbuf *, ...));
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| 144 | int isis_output __P((struct mbuf *, ...));
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| 145 | void *esis_ctlinput __P((int, struct sockaddr *, void *));
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| 146 | #endif /* _KERNEL */
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