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1.1 root 1: /*
2: * Copyright (c) 1999 Apple Computer, Inc. All rights reserved.
3: *
4: * @APPLE_LICENSE_HEADER_START@
5: *
6: * Portions Copyright (c) 1999 Apple Computer, Inc. All Rights
7: * Reserved. This file contains Original Code and/or Modifications of
8: * Original Code as defined in and that are subject to the Apple Public
9: * Source License Version 1.1 (the "License"). You may not use this file
10: * except in compliance with the License. Please obtain a copy of the
11: * License at http://www.apple.com/publicsource and read it before using
12: * this file.
13: *
14: * The Original Code and all software distributed under the License are
15: * distributed on an "AS IS" basis, WITHOUT WARRANTY OF ANY KIND, EITHER
16: * EXPRESS OR IMPLIED, AND APPLE HEREBY DISCLAIMS ALL SUCH WARRANTIES,
17: * INCLUDING WITHOUT LIMITATION, ANY WARRANTIES OF MERCHANTABILITY,
18: * FITNESS FOR A PARTICULAR PURPOSE OR NON-INFRINGEMENT. Please see the
19: * License for the specific language governing rights and limitations
20: * under the License.
21: *
22: * @APPLE_LICENSE_HEADER_END@
23: */
24:
25: /*-
26: * Copyright (c) 1991, 1993
27: * The Regents of the University of California. All rights reserved.
28: *
29: * Redistribution and use in source and binary forms, with or without
30: * modification, are permitted provided that the following conditions
31: * are met:
32: * 1. Redistributions of source code must retain the above copyright
33: * notice, this list of conditions and the following disclaimer.
34: * 2. Redistributions in binary form must reproduce the above copyright
35: * notice, this list of conditions and the following disclaimer in the
36: * documentation and/or other materials provided with the distribution.
37: * 3. All advertising materials mentioning features or use of this software
38: * must display the following acknowledgement:
39: * This product includes software developed by the University of
40: * California, Berkeley and its contributors.
41: * 4. Neither the name of the University nor the names of its contributors
42: * may be used to endorse or promote products derived from this software
43: * without specific prior written permission.
44: *
45: * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
46: * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
47: * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
48: * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
49: * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
50: * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
51: * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
52: * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
53: * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
54: * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
55: * SUCH DAMAGE.
56: *
57: * @(#)esis.h 8.1 (Berkeley) 6/10/93
58: */
59:
60: /***********************************************************
61: Copyright IBM Corporation 1987
62:
63: All Rights Reserved
64:
65: Permission to use, copy, modify, and distribute this software and its
66: documentation for any purpose and without fee is hereby granted,
67: provided that the above copyright notice appear in all copies and that
68: both that copyright notice and this permission notice appear in
69: supporting documentation, and that the name of IBM not be
70: used in advertising or publicity pertaining to distribution of the
71: software without specific, written prior permission.
72:
73: IBM DISCLAIMS ALL WARRANTIES WITH REGARD TO THIS SOFTWARE, INCLUDING
74: ALL IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS, IN NO EVENT SHALL
75: IBM BE LIABLE FOR ANY SPECIAL, INDIRECT OR CONSEQUENTIAL DAMAGES OR
76: ANY DAMAGES WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS,
77: WHETHER IN AN ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION,
78: ARISING OUT OF OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS
79: SOFTWARE.
80:
81: ******************************************************************/
82:
83: /*
84: * ARGO Project, Computer Sciences Dept., University of Wisconsin - Madison
85: */
86:
87: #ifndef BYTE_ORDER
88: /*
89: * Definitions for byte order,
90: * according to byte significance from low address to high.
91: */
92: #define LITTLE_ENDIAN 1234 /* least-significant byte first (vax) */
93: #define BIG_ENDIAN 4321 /* most-significant byte first (IBM, net) */
94: #define PDP_ENDIAN 3412 /* LSB first in word, MSW first in long (pdp) */
95:
96: #ifdef vax
97: #define BYTE_ORDER LITTLE_ENDIAN
98: #else
99: #define BYTE_ORDER BIG_ENDIAN /* mc68000, tahoe, most others */
100: #endif
101: #endif /* BYTE_ORDER */
102:
103: #define SNPAC_AGE 60 /* seconds */
104: #define ESIS_CONFIG 60 /* seconds */
105: #define ESIS_HT (ESIS_CONFIG * 2)
106:
107: /*
108: * Fixed part of an ESIS header
109: */
110: struct esis_fixed {
111: u_char esis_proto_id; /* network layer protocol identifier */
112: u_char esis_hdr_len; /* length indicator (octets) */
113: u_char esis_vers; /* version/protocol identifier extension */
114: u_char esis_res1; /* reserved */
115: u_char esis_type; /* type code */
116: /* technically, type should be &='d 0x1f */
117: #define ESIS_ESH 0x02 /* End System Hello */
118: #define ESIS_ISH 0x04 /* Intermediate System Hello */
119: #define ESIS_RD 0x06 /* Redirect */
120: u_char esis_ht_msb; /* holding time (seconds) high byte */
121: u_char esis_ht_lsb; /* holding time (seconds) low byte */
122: u_char esis_cksum_msb; /* checksum high byte */
123: u_char esis_cksum_lsb; /* checksum low byte */
124: };
125: /*
126: * Values for ESIS datagram options
127: */
128: #define ESISOVAL_NETMASK 0xe1 /* address mask option, RD PDU only */
129: #define ESISOVAL_SNPAMASK 0xe2 /* snpa mask option, RD PDU only */
130: #define ESISOVAL_ESCT 0xc6 /* end system conf. timer, ISH PDU only */
131:
132:
133: #define ESIS_CKSUM_OFF 0x07
134: #define ESIS_CKSUM_REQUIRED(pdu)\
135: ((pdu->esis_cksum_msb != 0) || (pdu->esis_cksum_lsb != 0))
136:
137: #define ESIS_VERSION 1
138:
139: struct esis_stat {
140: u_short es_nomem; /* insufficient memory to send hello */
141: u_short es_badcsum; /* incorrect checksum */
142: u_short es_badvers; /* incorrect version number */
143: u_short es_badtype; /* unknown pdu type field */
144: u_short es_toosmall; /* packet too small */
145: u_short es_eshsent; /* ESH sent */
146: u_short es_eshrcvd; /* ESH rcvd */
147: u_short es_ishsent; /* ISH sent */
148: u_short es_ishrcvd; /* ISH rcvd */
149: u_short es_rdsent; /* RD sent */
150: u_short es_rdrcvd; /* RD rcvd */
151: };
152:
153: #ifdef _KERNEL
154: struct esis_stat esis_stat;
155: #endif /* _KERNEL */
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