1 /*-
2 * SPDX-License-Identifier: BSD-3-Clause
3 *
4 * Copyright (c) 1982, 1986, 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 * @(#)icmp_var.h 8.1 (Berkeley) 6/10/93
32 * $FreeBSD$
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 */
42 struct icmpstat {
43 /* statistics related to icmp packets generated */
44 u_long icps_error; /* # of calls to icmp_error */
45 u_long icps_oldshort; /* no error 'cuz old ip too short */
46 u_long icps_oldicmp; /* no error 'cuz old was icmp */
47 u_long icps_outhist[ICMP_MAXTYPE + 1];
48 /* statistics related to input messages processed */
49 u_long icps_badcode; /* icmp_code out of range */
50 u_long icps_tooshort; /* packet < ICMP_MINLEN */
51 u_long icps_checksum; /* bad checksum */
52 u_long icps_badlen; /* calculated bound mismatch */
53 u_long icps_reflect; /* number of responses */
54 u_long icps_inhist[ICMP_MAXTYPE + 1];
55 u_long icps_bmcastecho; /* b/mcast echo requests dropped */
56 u_long icps_bmcasttstamp; /* b/mcast tstamp requests dropped */
57 u_long icps_badaddr; /* bad return address */
58 u_long icps_noroute; /* no route back */
59 };
60
61 #ifdef _KERNEL
62 #include <sys/counter.h>
63
64 VNET_PCPUSTAT_DECLARE(struct icmpstat, icmpstat);
65 /*
66 * In-kernel consumers can use these accessor macros directly to update
67 * stats.
68 */
69 #define ICMPSTAT_ADD(name, val) \
70 VNET_PCPUSTAT_ADD(struct icmpstat, icmpstat, name, (val))
71 #define ICMPSTAT_INC(name) ICMPSTAT_ADD(name, 1)
72
73 /*
74 * Kernel module consumers must use this accessor macro.
75 */
76 void kmod_icmpstat_inc(int statnum);
77 #define KMOD_ICMPSTAT_INC(name) \
78 kmod_icmpstat_inc(offsetof(struct icmpstat, name) / sizeof(uint64_t))
79 #endif
80
81 /*
82 * Identifiers for ICMP sysctl nodes
83 */
84 #define ICMPCTL_MASKREPL 1 /* allow replies to netmask requests */
85 #define ICMPCTL_STATS 2 /* statistics (read-only) */
86 #define ICMPCTL_ICMPLIM 3
87
88 #ifdef _KERNEL
89 SYSCTL_DECL(_net_inet_icmp);
90
91 extern int badport_bandlim(int);
92 #define BANDLIM_UNLIMITED -1
93 #define BANDLIM_ICMP_UNREACH 0
94 #define BANDLIM_ICMP_ECHO 1
95 #define BANDLIM_ICMP_TSTAMP 2
96 #define BANDLIM_RST_CLOSEDPORT 3 /* No connection, and no listeners */
97 #define BANDLIM_RST_OPENPORT 4 /* No connection, listener */
98 #define BANDLIM_ICMP6_UNREACH 5
99 #define BANDLIM_SCTP_OOTB 6
100 #define BANDLIM_MAX 7
101 #endif
102
103 #endif
Cache object: 96d4e3eb3b7d58aa358e5ff882b113c8
|