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1/*
2 * INET An implementation of the TCP/IP protocol suite for the LINUX
3 * operating system. INET is implemented using the BSD Socket
4 * interface as the means of communication with the user level.
5 *
6 * Definitions for the ICMP module.
7 *
8 * Version: @(#)icmp.h 1.0.4 05/13/93
9 *
10 * Authors: Ross Biro
11 * Fred N. van Kempen, <waltje@uWalt.NL.Mugnet.ORG>
12 *
13 * This program is free software; you can redistribute it and/or
14 * modify it under the terms of the GNU General Public License
15 * as published by the Free Software Foundation; either version
16 * 2 of the License, or (at your option) any later version.
17 */
18#ifndef _ICMP_H
19#define _ICMP_H
20
21#include <linux/icmp.h>
22
23#include <net/inet_sock.h>
24#include <net/snmp.h>
25
26struct icmp_err {
27 int errno;
28 unsigned fatal:1;
29};
30
31extern struct icmp_err icmp_err_convert[];
32DECLARE_SNMP_STAT(struct icmp_mib, icmp_statistics);
33DECLARE_SNMP_STAT(struct icmpmsg_mib, icmpmsg_statistics);
34#define ICMP_INC_STATS(field) SNMP_INC_STATS(icmp_statistics, field)
35#define ICMP_INC_STATS_BH(field) SNMP_INC_STATS_BH(icmp_statistics, field)
36#define ICMP_INC_STATS_USER(field) SNMP_INC_STATS_USER(icmp_statistics, field)
37#define ICMPMSGOUT_INC_STATS(field) SNMP_INC_STATS(icmpmsg_statistics, field+256)
38#define ICMPMSGOUT_INC_STATS_BH(field) SNMP_INC_STATS_BH(icmpmsg_statistics, field+256)
39#define ICMPMSGOUT_INC_STATS_USER(field) SNMP_INC_STATS_USER(icmpmsg_statistics, field+256)
40#define ICMPMSGIN_INC_STATS(field) SNMP_INC_STATS(icmpmsg_statistics, field)
41#define ICMPMSGIN_INC_STATS_BH(field) SNMP_INC_STATS_BH(icmpmsg_statistics, field)
42#define ICMPMSGIN_INC_STATS_USER(field) SNMP_INC_STATS_USER(icmpmsg_statistics, field)
43
44struct dst_entry;
45struct net_proto_family;
46struct sk_buff;
47
48extern void icmp_send(struct sk_buff *skb_in, int type, int code, __be32 info);
49extern int icmp_rcv(struct sk_buff *skb);
50extern int icmp_ioctl(struct sock *sk, int cmd, unsigned long arg);
51extern void icmp_init(struct net_proto_family *ops);
52extern void icmp_out_count(unsigned char type);
53
54/* Move into dst.h ? */
55extern int xrlim_allow(struct dst_entry *dst, int timeout);
56
57struct raw_sock {
58 /* inet_sock has to be the first member */
59 struct inet_sock inet;
60 struct icmp_filter filter;
61};
62
63static inline struct raw_sock *raw_sk(const struct sock *sk)
64{
65 return (struct raw_sock *)sk;
66}
67
68extern int sysctl_icmp_echo_ignore_all;
69extern int sysctl_icmp_echo_ignore_broadcasts;
70extern int sysctl_icmp_ignore_bogus_error_responses;
71extern int sysctl_icmp_errors_use_inbound_ifaddr;
72extern int sysctl_icmp_ratelimit;
73extern int sysctl_icmp_ratemask;
74
75#endif /* _ICMP_H */