1/* $OpenBSD: icmp_var.h,v 1.16 2020/08/22 17:55:54 gnezdo Exp $ */
2/* $NetBSD: icmp_var.h,v 1.8 1995/03/26 20:32:19 jtc Exp $ */
3
4/*
5 * Copyright (c) 1982, 1986, 1993
6 * The Regents of the University of California. All rights reserved.
7 *
8 * Redistribution and use in source and binary forms, with or without
9 * modification, are permitted provided that the following conditions
10 * are met:
11 * 1. Redistributions of source code must retain the above copyright
12 * notice, this list of conditions and the following disclaimer.
13 * 2. Redistributions in binary form must reproduce the above copyright
14 * notice, this list of conditions and the following disclaimer in the
15 * documentation and/or other materials provided with the distribution.
16 * 3. Neither the name of the University nor the names of its contributors
17 * may be used to endorse or promote products derived from this software
18 * without specific prior written permission.
19 *
20 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
21 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
22 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
23 * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
24 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
25 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
26 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
27 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
28 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
29 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
30 * SUCH DAMAGE.
31 *
32 * @(#)icmp_var.h 8.1 (Berkeley) 6/10/93
33 */
34
35#ifndef _NETINET_ICMP_VAR_H_
36#define _NETINET_ICMP_VAR_H_
37
38/*
39 * Variables related to this implementation
40 * of the internet control message protocol.
41 */
42struct icmpstat {
43/* statistics related to icmp packets generated */
44 u_long icps_error; /* # of calls to icmp_error */
45 u_long icps_toofreq; /* no error because rate limiter */
46 u_long icps_oldshort; /* no error because old ip too short */
47 u_long icps_oldicmp; /* no error because old was icmp */
48 u_long icps_outhist[ICMP_MAXTYPE + 1];
49/* statistics related to input messages processed */
50 u_long icps_badcode; /* icmp_code out of range */
51 u_long icps_tooshort; /* packet < ICMP_MINLEN */
52 u_long icps_checksum; /* bad checksum */
53 u_long icps_badlen; /* calculated bound mismatch */
54 u_long icps_reflect; /* number of responses */
55 u_long icps_bmcastecho; /* rejected broadcast icmps */
56 u_long icps_inhist[ICMP_MAXTYPE + 1];
57};
58
59/*
60 * Names for ICMP sysctl objects
61 */
62#define ICMPCTL_MASKREPL 1 /* allow replies to netmask requests */
63#define ICMPCTL_BMCASTECHO 2 /* reply to icmps to broadcast/mcast */
64#define ICMPCTL_ERRPPSLIMIT 3 /* ICMP error pps limitation */
65#define ICMPCTL_REDIRACCEPT 4 /* Accept redirects from routers */
66#define ICMPCTL_REDIRTIMEOUT 5 /* Remove routes added via redirects */
67#define ICMPCTL_TSTAMPREPL 6 /* allow replies to timestamp requests */
68#define ICMPCTL_STATS 7 /* ICMP statistics */
69#define ICMPCTL_MAXID 8
70
71#define ICMPCTL_NAMES { \
72 { 0, 0 }, \
73 { "maskrepl", CTLTYPE_INT }, \
74 { "bmcastecho", CTLTYPE_INT }, \
75 { "errppslimit", CTLTYPE_INT }, \
76 { "rediraccept", CTLTYPE_INT }, \
77 { "redirtimeout", CTLTYPE_INT }, \
78 { "tstamprepl", CTLTYPE_INT }, \
79 { "stats", CTLTYPE_STRUCT } \
80}
81
82#ifdef _KERNEL
83
84#include <sys/percpu.h>
85
86enum icmpstat_counters {
87 icps_error,
88 icps_toofreq,
89 icps_oldshort,
90 icps_oldicmp,
91 icps_outhist,
92 icps_badcode = icps_outhist + ICMP_MAXTYPE + 1,
93 icps_tooshort,
94 icps_checksum,
95 icps_badlen,
96 icps_reflect,
97 icps_bmcastecho,
98 icps_inhist,
99 icps_ncounters = icps_inhist + ICMP_MAXTYPE + 1
100};
101
102extern struct cpumem *icmpcounters;
103
104static inline void
105icmpstat_inc(enum icmpstat_counters c)
106{
107 counters_inc(icmpcounters, c);
108}
109
110#endif /* _KERNEL */
111#endif /* _NETINET_ICMP_VAR_H_ */