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1.1 root 1: /*
2: * Copyright (c) 2000 Apple Computer, Inc. All rights reserved.
3: *
4: * @APPLE_LICENSE_HEADER_START@
5: *
6: * The contents of this file constitute Original Code as defined in and
7: * are subject to the Apple Public Source License Version 1.1 (the
8: * "License"). You may not use this file except in compliance with the
9: * License. Please obtain a copy of the License at
10: * http://www.apple.com/publicsource and read it before using this file.
11: *
12: * This Original Code and all software distributed under the License are
13: * distributed on an "AS IS" basis, WITHOUT WARRANTY OF ANY KIND, EITHER
14: * EXPRESS OR IMPLIED, AND APPLE HEREBY DISCLAIMS ALL SUCH WARRANTIES,
15: * INCLUDING WITHOUT LIMITATION, ANY WARRANTIES OF MERCHANTABILITY,
16: * FITNESS FOR A PARTICULAR PURPOSE OR NON-INFRINGEMENT. Please see the
17: * License for the specific language governing rights and limitations
18: * under the License.
19: *
20: * @APPLE_LICENSE_HEADER_END@
21: */
22: /*-
23: * Copyright (c) 1991, 1993
24: * The Regents of the University of California. All rights reserved.
25: *
26: * Redistribution and use in source and binary forms, with or without
27: * modification, are permitted provided that the following conditions
28: * are met:
29: * 1. Redistributions of source code must retain the above copyright
30: * notice, this list of conditions and the following disclaimer.
31: * 2. Redistributions in binary form must reproduce the above copyright
32: * notice, this list of conditions and the following disclaimer in the
33: * documentation and/or other materials provided with the distribution.
34: * 3. All advertising materials mentioning features or use of this software
35: * must display the following acknowledgement:
36: * This product includes software developed by the University of
37: * California, Berkeley and its contributors.
38: * 4. Neither the name of the University nor the names of its contributors
39: * may be used to endorse or promote products derived from this software
40: * without specific prior written permission.
41: *
42: * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
43: * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
44: * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
45: * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
46: * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
47: * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
48: * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
49: * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
50: * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
51: * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
52: * SUCH DAMAGE.
53: *
54: * @(#)esis.h 8.1 (Berkeley) 6/10/93
55: */
56:
57: /***********************************************************
58: Copyright IBM Corporation 1987
59:
60: All Rights Reserved
61:
62: Permission to use, copy, modify, and distribute this software and its
63: documentation for any purpose and without fee is hereby granted,
64: provided that the above copyright notice appear in all copies and that
65: both that copyright notice and this permission notice appear in
66: supporting documentation, and that the name of IBM not be
67: used in advertising or publicity pertaining to distribution of the
68: software without specific, written prior permission.
69:
70: IBM DISCLAIMS ALL WARRANTIES WITH REGARD TO THIS SOFTWARE, INCLUDING
71: ALL IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS, IN NO EVENT SHALL
72: IBM BE LIABLE FOR ANY SPECIAL, INDIRECT OR CONSEQUENTIAL DAMAGES OR
73: ANY DAMAGES WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS,
74: WHETHER IN AN ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION,
75: ARISING OUT OF OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS
76: SOFTWARE.
77:
78: ******************************************************************/
79:
80: /*
81: * ARGO Project, Computer Sciences Dept., University of Wisconsin - Madison
82: */
83:
84: #ifndef BYTE_ORDER
85: /*
86: * Definitions for byte order,
87: * according to byte significance from low address to high.
88: */
89: #define LITTLE_ENDIAN 1234 /* least-significant byte first (vax) */
90: #define BIG_ENDIAN 4321 /* most-significant byte first (IBM, net) */
91: #define PDP_ENDIAN 3412 /* LSB first in word, MSW first in long (pdp) */
92:
93: #ifdef vax
94: #define BYTE_ORDER LITTLE_ENDIAN
95: #else
96: #define BYTE_ORDER BIG_ENDIAN /* mc68000, tahoe, most others */
97: #endif
98: #endif /* BYTE_ORDER */
99:
100: #define SNPAC_AGE 60 /* seconds */
101: #define ESIS_CONFIG 60 /* seconds */
102: #define ESIS_HT (ESIS_CONFIG * 2)
103:
104: /*
105: * Fixed part of an ESIS header
106: */
107: struct esis_fixed {
108: u_char esis_proto_id; /* network layer protocol identifier */
109: u_char esis_hdr_len; /* length indicator (octets) */
110: u_char esis_vers; /* version/protocol identifier extension */
111: u_char esis_res1; /* reserved */
112: u_char esis_type; /* type code */
113: /* technically, type should be &='d 0x1f */
114: #define ESIS_ESH 0x02 /* End System Hello */
115: #define ESIS_ISH 0x04 /* Intermediate System Hello */
116: #define ESIS_RD 0x06 /* Redirect */
117: u_char esis_ht_msb; /* holding time (seconds) high byte */
118: u_char esis_ht_lsb; /* holding time (seconds) low byte */
119: u_char esis_cksum_msb; /* checksum high byte */
120: u_char esis_cksum_lsb; /* checksum low byte */
121: };
122: /*
123: * Values for ESIS datagram options
124: */
125: #define ESISOVAL_NETMASK 0xe1 /* address mask option, RD PDU only */
126: #define ESISOVAL_SNPAMASK 0xe2 /* snpa mask option, RD PDU only */
127: #define ESISOVAL_ESCT 0xc6 /* end system conf. timer, ISH PDU only */
128:
129:
130: #define ESIS_CKSUM_OFF 0x07
131: #define ESIS_CKSUM_REQUIRED(pdu)\
132: ((pdu->esis_cksum_msb != 0) || (pdu->esis_cksum_lsb != 0))
133:
134: #define ESIS_VERSION 1
135:
136: struct esis_stat {
137: u_short es_nomem; /* insufficient memory to send hello */
138: u_short es_badcsum; /* incorrect checksum */
139: u_short es_badvers; /* incorrect version number */
140: u_short es_badtype; /* unknown pdu type field */
141: u_short es_toosmall; /* packet too small */
142: u_short es_eshsent; /* ESH sent */
143: u_short es_eshrcvd; /* ESH rcvd */
144: u_short es_ishsent; /* ISH sent */
145: u_short es_ishrcvd; /* ISH rcvd */
146: u_short es_rdsent; /* RD sent */
147: u_short es_rdrcvd; /* RD rcvd */
148: };
149:
150: #ifdef KERNEL
151: struct esis_stat esis_stat;
152: #endif /* KERNEL */
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