fix bug that can cause recursive .forward files to fail
[unix-history] / usr / src / sys / netns / ns_error.h
CommitLineData
8ae0e4b4 1/*
99315dca
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2 * Copyright (c) 1984, 1988, 1993
3 * The Regents of the University of California. All rights reserved.
8ae0e4b4 4 *
dbf0c423 5 * %sccs.include.redist.c%
240edf1f 6 *
99315dca 7 * @(#)ns_error.h 8.1 (Berkeley) %G%
8ae0e4b4 8 */
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9
10/*
11 * Xerox NS error messages
12 */
13
14struct ns_errp {
15 u_short ns_err_num; /* Error Number */
16 u_short ns_err_param; /* Error Parameter */
17 struct idp ns_err_idp; /* Initial segment of offending
18 packet */
19 u_char ns_err_lev2[12]; /* at least this much higher
20 level protocol */
21};
22struct ns_epidp {
23 struct idp ns_ep_idp;
24 struct ns_errp ns_ep_errp;
25};
26
27#define NS_ERR_UNSPEC 0 /* Unspecified Error detected at dest. */
28#define NS_ERR_BADSUM 1 /* Bad Checksum detected at dest */
29#define NS_ERR_NOSOCK 2 /* Specified socket does not exist at dest*/
30#define NS_ERR_FULLUP 3 /* Dest. refuses packet due to resource lim.*/
31#define NS_ERR_UNSPEC_T 0x200 /* Unspec. Error occured before reaching dest*/
32#define NS_ERR_BADSUM_T 0x201 /* Bad Checksum detected in transit */
33#define NS_ERR_UNREACH_HOST 0x202 /* Dest cannot be reached from here*/
34#define NS_ERR_TOO_OLD 0x203 /* Packet x'd 15 routers without delivery*/
35#define NS_ERR_TOO_BIG 0x204 /* Packet too large to be forwarded through
36 some intermediate gateway. The error
37 parameter field contains the max packet
38 size that can be accommodated */
d5678156 39#define NS_ERR_MAX 20
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40
41/*
42 * Variables related to this implementation
43 * of the network systems error message protocol.
44 */
45struct ns_errstat {
46/* statistics related to ns_err packets generated */
47 int ns_es_error; /* # of calls to ns_error */
48 int ns_es_oldshort; /* no error 'cuz old ip too short */
49 int ns_es_oldns_err; /* no error 'cuz old was ns_err */
50 int ns_es_outhist[NS_ERR_MAX];
51/* statistics related to input messages processed */
52 int ns_es_badcode; /* ns_err_code out of range */
53 int ns_es_tooshort; /* packet < IDP_MINLEN */
54 int ns_es_checksum; /* bad checksum */
55 int ns_es_badlen; /* calculated bound mismatch */
56 int ns_es_reflect; /* number of responses */
57 int ns_es_inhist[NS_ERR_MAX];
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58 u_short ns_es_codes[NS_ERR_MAX];/* which error code for outhist
59 since we might not know all */
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60};
61
62#ifdef KERNEL
63struct ns_errstat ns_errstat;
64#endif