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
  26 struct icmp_err {
  27   int           errno;
  28   unsigned      fatal:1;
  29 };
  30
  31 extern struct icmp_err icmp_err_convert[];
  32 DECLARE_SNMP_STAT(struct icmp_mib, icmp_statistics);
  33 DECLARE_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
  44 struct dst_entry;
  45 struct net_proto_family;
  46 struct sk_buff;
  47
  48 extern void     icmp_send(struct sk_buff *skb_in,  int type, int code, __be32 info);
  49 extern int      icmp_rcv(struct sk_buff *skb);
  50 extern int      icmp_ioctl(struct sock *sk, int cmd, unsigned long arg);
  51 extern void     icmp_init(struct net_proto_family *ops);
  52 extern void     icmp_out_count(unsigned char type);
  53
  54 /* Move into dst.h ? */
  55 extern int      xrlim_allow(struct dst_entry *dst, int timeout);
  56
  57 struct raw_sock {
  58         /* inet_sock has to be the first member */
  59         struct inet_sock   inet;
  60         struct icmp_filter filter;
  61 };
  62
  63 static inline struct raw_sock *raw_sk(const struct sock *sk)
  64 {
  65         return (struct raw_sock *)sk;
  66 }
  67
  68 extern int sysctl_icmp_echo_ignore_all;
  69 extern int sysctl_icmp_echo_ignore_broadcasts;
  70 extern int sysctl_icmp_ignore_bogus_error_responses;
  71 extern int sysctl_icmp_errors_use_inbound_ifaddr;
  72 extern int sysctl_icmp_ratelimit;
  73 extern int sysctl_icmp_ratemask;
  74
  75 #endif  /* _ICMP_H */