1 /*-
2 * Copyright (c) 1982, 1986, 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 * 4. Neither the name of the University nor the names of its contributors
14 * may be used to endorse or promote products derived from this software
15 * without specific prior written permission.
16 *
17 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
18 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
19 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
20 * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
21 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
22 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
23 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
24 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
25 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
26 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
27 * SUCH DAMAGE.
28 *
29 * @(#)icmp_var.h 8.1 (Berkeley) 6/10/93
30 * $FreeBSD: src/sys/netinet/icmp_var.h,v 1.26 2007/07/19 22:34:24 rwatson Exp $
31 */
32
33 #ifndef _NETINET_ICMP_VAR_H_
34 #define _NETINET_ICMP_VAR_H_
35
36
37 /*
38 * Variables related to this implementation
39 * of the internet control message protocol.
40 */
41 struct icmpstat {
42 /* statistics related to icmp packets generated */
43 u_long icps_error; /* # of calls to icmp_error */
44 u_long icps_oldshort; /* no error 'cuz old ip too short */
45 u_long icps_oldicmp; /* no error 'cuz old was icmp */
46 u_long icps_outhist[ICMP_MAXTYPE + 1];
47 /* statistics related to input messages processed */
48 u_long icps_badcode; /* icmp_code out of range */
49 u_long icps_tooshort; /* packet < ICMP_MINLEN */
50 u_long icps_checksum; /* bad checksum */
51 u_long icps_badlen; /* calculated bound mismatch */
52 u_long icps_reflect; /* number of responses */
53 u_long icps_inhist[ICMP_MAXTYPE + 1];
54 u_long icps_bmcastecho; /* b/mcast echo requests dropped */
55 u_long icps_bmcasttstamp; /* b/mcast tstamp requests dropped */
56 u_long icps_badaddr; /* bad return address */
57 u_long icps_noroute; /* no route back */
58 };
59
60 /*
61 * Names for ICMP sysctl objects
62 */
63 #define ICMPCTL_MASKREPL 1 /* allow replies to netmask requests */
64 #define ICMPCTL_STATS 2 /* statistics (read-only) */
65 #define ICMPCTL_ICMPLIM 3
66 #define ICMPCTL_MAXID 4
67
68 #define ICMPCTL_NAMES { \
69 { 0, 0 }, \
70 { "maskrepl", CTLTYPE_INT }, \
71 { "stats", CTLTYPE_STRUCT }, \
72 { "icmplim", CTLTYPE_INT }, \
73 }
74
75 #ifdef _KERNEL
76 SYSCTL_DECL(_net_inet_icmp);
77 extern struct icmpstat icmpstat; /* icmp statistics */
78 extern int badport_bandlim(int);
79 #define BANDLIM_UNLIMITED -1
80 #define BANDLIM_ICMP_UNREACH 0
81 #define BANDLIM_ICMP_ECHO 1
82 #define BANDLIM_ICMP_TSTAMP 2
83 #define BANDLIM_RST_CLOSEDPORT 3 /* No connection, and no listeners */
84 #define BANDLIM_RST_OPENPORT 4 /* No connection, listener */
85 #define BANDLIM_ICMP6_UNREACH 5
86 #define BANDLIM_MAX 5
87 #endif
88
89 #endif
90
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