FreeBSD/Linux Kernel Cross Reference
sys/netiso/esis.h
1 /* $NetBSD: esis.h,v 1.16 2004/04/20 02:13:26 matt Exp $ */
2
3 /*-
4 * Copyright (c) 1991, 1993
5 * The Regents of the University of California. All rights reserved.
6 *
7 * Redistribution and use in source and binary forms, with or without
8 * modification, are permitted provided that the following conditions
9 * are met:
10 * 1. Redistributions of source code must retain the above copyright
11 * notice, this list of conditions and the following disclaimer.
12 * 2. Redistributions in binary form must reproduce the above copyright
13 * notice, this list of conditions and the following disclaimer in the
14 * documentation and/or other materials provided with the distribution.
15 * 3. Neither the name of the University nor the names of its contributors
16 * may be used to endorse or promote products derived from this software
17 * without specific prior written permission.
18 *
19 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
20 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
21 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
22 * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
23 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
24 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
25 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
26 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
27 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
28 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
29 * SUCH DAMAGE.
30 *
31 * @(#)esis.h 8.1 (Berkeley) 6/10/93
32 */
33
34 /***********************************************************
35 Copyright IBM Corporation 1987
36
37 All Rights Reserved
38
39 Permission to use, copy, modify, and distribute this software and its
40 documentation for any purpose and without fee is hereby granted,
41 provided that the above copyright notice appear in all copies and that
42 both that copyright notice and this permission notice appear in
43 supporting documentation, and that the name of IBM not be
44 used in advertising or publicity pertaining to distribution of the
45 software without specific, written prior permission.
46
47 IBM DISCLAIMS ALL WARRANTIES WITH REGARD TO THIS SOFTWARE, INCLUDING
48 ALL IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS, IN NO EVENT SHALL
49 IBM BE LIABLE FOR ANY SPECIAL, INDIRECT OR CONSEQUENTIAL DAMAGES OR
50 ANY DAMAGES WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS,
51 WHETHER IN AN ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION,
52 ARISING OUT OF OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS
53 SOFTWARE.
54
55 ******************************************************************/
56
57 /*
58 * ARGO Project, Computer Sciences Dept., University of Wisconsin - Madison
59 */
60
61 #include <machine/endian.h>
62
63 #define SNPAC_AGE 60 /* seconds */
64 #define ESIS_CONFIG 60 /* seconds */
65 #define ESIS_HT (ESIS_CONFIG * 2)
66
67 /*
68 * Fixed part of an ESIS header
69 */
70 struct esis_fixed {
71 u_char esis_proto_id; /* network layer protocol identifier */
72 u_char esis_hdr_len; /* length indicator (octets) */
73 u_char esis_vers; /* version/protocol identifier
74 * extension */
75 u_char esis_res1; /* reserved */
76 u_char esis_type; /* type code */
77 /* technically, type should be &='d 0x1f */
78 #define ESIS_ESH 0x02 /* End System Hello */
79 #define ESIS_ISH 0x04 /* Intermediate System Hello */
80 #define ESIS_RD 0x06 /* Redirect */
81 u_char esis_ht_msb; /* holding time (seconds) high byte */
82 u_char esis_ht_lsb; /* holding time (seconds) low byte */
83 u_char esis_cksum_msb; /* checksum high byte */
84 u_char esis_cksum_lsb; /* checksum low byte */
85 } __attribute__((packed));
86 /*
87 * Values for ESIS datagram options
88 */
89 #define ESISOVAL_NETMASK 0xe1 /* address mask option, RD PDU only */
90 #define ESISOVAL_SNPAMASK 0xe2 /* snpa mask option, RD PDU only */
91 #define ESISOVAL_ESCT 0xc6 /* end system conf. timer, ISH PDU
92 * only */
93
94
95 #define ESIS_CKSUM_OFF 0x07
96 #define ESIS_CKSUM_REQUIRED(pdu)\
97 ((pdu->esis_cksum_msb != 0) || (pdu->esis_cksum_lsb != 0))
98
99 #define ESIS_VERSION 1
100
101 struct esis_stat {
102 u_short es_nomem; /* insufficient memory to send hello */
103 u_short es_badcsum; /* incorrect checksum */
104 u_short es_badvers; /* incorrect version number */
105 u_short es_badtype; /* unknown pdu type field */
106 u_short es_toosmall; /* packet too small */
107 u_short es_eshsent; /* ESH sent */
108 u_short es_eshrcvd; /* ESH rcvd */
109 u_short es_ishsent; /* ISH sent */
110 u_short es_ishrcvd; /* ISH rcvd */
111 u_short es_rdsent; /* RD sent */
112 u_short es_rdrcvd; /* RD rcvd */
113 };
114
115 #ifdef _KERNEL
116 extern struct esis_stat esis_stat;
117 extern short esis_holding_time;
118 extern short esis_config_time;
119 extern short esis_esconfig_time;
120 struct socket;
121 struct mbuf;
122 struct snpa_hdr;
123 struct clnp_optidx;
124 struct iso_addr;
125 struct rtentry;
126 struct sockaddr_dl;
127
128 void esis_init (void);
129 int esis_usrreq (struct socket *, int, struct mbuf *, struct mbuf *,
130 struct mbuf *, struct proc *);
131 void esis_input (struct mbuf *, ...);
132 void esis_rdoutput (struct snpa_hdr *, struct mbuf *, struct clnp_optidx *,
133 struct iso_addr *, struct rtentry *);
134 int esis_insert_addr (caddr_t *, int *, struct iso_addr *, struct mbuf *,
135 int);
136 void esis_eshinput (struct mbuf *, struct snpa_hdr *);
137 void esis_ishinput (struct mbuf *, struct snpa_hdr *);
138 void esis_rdinput (struct mbuf *, struct snpa_hdr *);
139 void esis_config (void *);
140 void esis_shoutput (struct ifnet *, int, int, caddr_t, int,
141 struct iso_addr *);
142 void isis_input (struct mbuf *, ...);
143 int isis_output (struct mbuf *, ...);
144 void *esis_ctlinput (int, struct sockaddr *, void *);
145 #endif /* _KERNEL */
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