FreeBSD/Linux Kernel Cross Reference
sys/netns/ns_error.h
1 /*
2 * Copyright (c) 1984, 1988, 1993
3 * The Regents of the University of California. All rights reserved.
4 *
5 * Redistribution and use in source and binary forms, with or without
6 * modification, are permitted provided that the following conditions
7 * are met:
8 * 1. Redistributions of source code must retain the above copyright
9 * notice, this list of conditions and the following disclaimer.
10 * 2. Redistributions in binary form must reproduce the above copyright
11 * notice, this list of conditions and the following disclaimer in the
12 * documentation and/or other materials provided with the distribution.
13 * 3. All advertising materials mentioning features or use of this software
14 * must display the following acknowledgement:
15 * This product includes software developed by the University of
16 * California, Berkeley and its contributors.
17 * 4. Neither the name of the University nor the names of its contributors
18 * may be used to endorse or promote products derived from this software
19 * without specific prior written permission.
20 *
21 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
22 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
23 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
24 * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
25 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
26 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
27 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
28 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
29 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
30 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
31 * SUCH DAMAGE.
32 *
33 * @(#)ns_error.h 8.1 (Berkeley) 6/10/93
34 * $FreeBSD: src/sys/netns/ns_error.h,v 1.6.2.1 1999/09/05 08:19:19 peter Exp $
35 */
36
37 #ifndef _NETNS_NS_ERROR_H_
38 #define _NETNS_NS_ERROR_H_
39
40 /*
41 * Xerox NS error messages
42 */
43
44 struct ns_errp {
45 u_short ns_err_num; /* Error Number */
46 u_short ns_err_param; /* Error Parameter */
47 struct idp ns_err_idp; /* Initial segment of offending
48 packet */
49 u_char ns_err_lev2[12]; /* at least this much higher
50 level protocol */
51 };
52 struct ns_epidp {
53 struct idp ns_ep_idp;
54 struct ns_errp ns_ep_errp;
55 };
56
57 #define NS_ERR_UNSPEC 0 /* Unspecified Error detected at dest. */
58 #define NS_ERR_BADSUM 1 /* Bad Checksum detected at dest */
59 #define NS_ERR_NOSOCK 2 /* Specified socket does not exist at dest*/
60 #define NS_ERR_FULLUP 3 /* Dest. refuses packet due to resource lim.*/
61 #define NS_ERR_UNSPEC_T 0x200 /* Unspec. Error occured before reaching dest*/
62 #define NS_ERR_BADSUM_T 0x201 /* Bad Checksum detected in transit */
63 #define NS_ERR_UNREACH_HOST 0x202 /* Dest cannot be reached from here*/
64 #define NS_ERR_TOO_OLD 0x203 /* Packet x'd 15 routers without delivery*/
65 #define NS_ERR_TOO_BIG 0x204 /* Packet too large to be forwarded through
66 some intermediate gateway. The error
67 parameter field contains the max packet
68 size that can be accommodated */
69 #define NS_ERR_MAX 20
70
71 /*
72 * Variables related to this implementation
73 * of the network systems error message protocol.
74 */
75 struct ns_errstat {
76 /* statistics related to ns_err packets generated */
77 int ns_es_error; /* # of calls to ns_error */
78 int ns_es_oldshort; /* no error 'cuz old ip too short */
79 int ns_es_oldns_err; /* no error 'cuz old was ns_err */
80 int ns_es_outhist[NS_ERR_MAX];
81 /* statistics related to input messages processed */
82 int ns_es_badcode; /* ns_err_code out of range */
83 int ns_es_tooshort; /* packet < IDP_MINLEN */
84 int ns_es_checksum; /* bad checksum */
85 int ns_es_badlen; /* calculated bound mismatch */
86 int ns_es_reflect; /* number of responses */
87 int ns_es_inhist[NS_ERR_MAX];
88 u_short ns_es_codes[NS_ERR_MAX];/* which error code for outhist
89 since we might not know all */
90 };
91
92 #ifdef KERNEL
93 struct ns_errstat ns_errstat;
94 #endif
95
96 #endif
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