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* INET An implementation of the TCP/IP protocol suite for the LINUX
* operating system. INET is implemented using the BSD Socket
* interface as the means of communication with the user level.
* Definitions for the ICMP module.
* Version: @(#)icmp.h 1.0.4 05/13/93
* Authors: Ross Biro
* Fred N. van Kempen, <waltje@uWalt.NL.Mugnet.ORG>
* This program is free software; you can redistribute it and/or
* modify it under the terms of the GNU General Public License
* as published by the Free Software Foundation; either version
* 2 of the License, or (at your option) any later version.
#ifndef _ICMP_H
#define _ICMP_H
#include <linux/icmp.h>
#include <net/inet_sock.h>
#include <net/snmp.h>
struct icmp_err {
int errno;
unsigned fatal:1;
extern struct icmp_err icmp_err_convert[];
DECLARE_SNMP_STAT(struct icmp_mib, icmp_statistics);
DECLARE_SNMP_STAT(struct icmpmsg_mib, icmpmsg_statistics);
#define ICMP_INC_STATS(field) SNMP_INC_STATS(icmp_statistics, field)
#define ICMP_INC_STATS_BH(field) SNMP_INC_STATS_BH(icmp_statistics, field)
#define ICMP_INC_STATS_USER(field) SNMP_INC_STATS_USER(icmp_statistics, field)
#define ICMPMSGOUT_INC_STATS(field) SNMP_INC_STATS(icmpmsg_statistics, field+256)
#define ICMPMSGOUT_INC_STATS_BH(field) SNMP_INC_STATS_BH(icmpmsg_statistics, field+256)
#define ICMPMSGOUT_INC_STATS_USER(field) SNMP_INC_STATS_USER(icmpmsg_statistics, field+256)
#define ICMPMSGIN_INC_STATS(field) SNMP_INC_STATS(icmpmsg_statistics, field)
#define ICMPMSGIN_INC_STATS_BH(field) SNMP_INC_STATS_BH(icmpmsg_statistics, field)
#define ICMPMSGIN_INC_STATS_USER(field) SNMP_INC_STATS_USER(icmpmsg_statistics, field)
struct dst_entry;
struct net_proto_family;
struct sk_buff;
extern void icmp_send(struct sk_buff *skb_in, int type, int code, __be32 info);
extern int icmp_rcv(struct sk_buff *skb);
extern int icmp_ioctl(struct sock *sk, int cmd, unsigned long arg);
extern void icmp_init(struct net_proto_family *ops);
extern void icmp_out_count(unsigned char type);
/* Move into dst.h ? */
extern int xrlim_allow(struct dst_entry *dst, int timeout);
struct raw_sock {
/* inet_sock has to be the first member */
struct inet_sock inet;
struct icmp_filter filter;
static inline struct raw_sock *raw_sk(const struct sock *sk)
return (struct raw_sock *)sk;
extern int sysctl_icmp_echo_ignore_all;
extern int sysctl_icmp_echo_ignore_broadcasts;
extern int sysctl_icmp_ignore_bogus_error_responses;
extern int sysctl_icmp_errors_use_inbound_ifaddr;
extern int sysctl_icmp_ratelimit;
extern int sysctl_icmp_ratemask;
#endif /* _ICMP_H */