LXR linux/include/net/icmp.h

   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);
  33#define ICMP_INC_STATS(field)           SNMP_INC_STATS(icmp_statistics, field)
  34#define ICMP_INC_STATS_BH(field)        SNMP_INC_STATS_BH(icmp_statistics, field)
  35#define ICMP_INC_STATS_USER(field)      SNMP_INC_STATS_USER(icmp_statistics, field)
  36
  37struct dst_entry;
  38struct net_proto_family;
  39struct sk_buff;
  40
  41extern void     icmp_send(struct sk_buff *skb_in,  int type, int code, u32 info);
  42extern int      icmp_rcv(struct sk_buff *skb);
  43extern int      icmp_ioctl(struct sock *sk, int cmd, unsigned long arg);
  44extern void     icmp_init(struct net_proto_family *ops);
  45
  46/* Move into dst.h ? */
  47extern int      xrlim_allow(struct dst_entry *dst, int timeout);
  48
  49struct raw_sock {
  50        /* inet_sock has to be the first member */
  51        struct inet_sock   inet;
  52        struct icmp_filter filter;
  53};
  54
  55static inline struct raw_sock *raw_sk(const struct sock *sk)
  56{
  57        return (struct raw_sock *)sk;
  58}
  59
  60extern int sysctl_icmp_echo_ignore_all;
  61extern int sysctl_icmp_echo_ignore_broadcasts;
  62extern int sysctl_icmp_ignore_bogus_error_responses;
  63extern int sysctl_icmp_errors_use_inbound_ifaddr;
  64extern int sysctl_icmp_ratelimit;
  65extern int sysctl_icmp_ratemask;
  66
  67#endif  /* _ICMP_H */
  68