LXR linux/include/net/icmp.h

   1/* SPDX-License-Identifier: GPL-2.0-or-later */
   2/*
   3 * INET         An implementation of the TCP/IP protocol suite for the LINUX
   4 *              operating system.  INET is implemented using the  BSD Socket
   5 *              interface as the means of communication with the user level.
   6 *
   7 *              Definitions for the ICMP module.
   8 *
   9 * Version:     @(#)icmp.h      1.0.4   05/13/93
  10 *
  11 * Authors:     Ross Biro
  12 *              Fred N. van Kempen, <waltje@uWalt.NL.Mugnet.ORG>
  13 */
  14#ifndef _ICMP_H
  15#define _ICMP_H
  16
  17#include <linux/icmp.h>
  18
  19#include <net/inet_sock.h>
  20#include <net/snmp.h>
  21#include <net/ip.h>
  22
  23struct icmp_err {
  24  int           errno;
  25  unsigned int  fatal:1;
  26};
  27
  28extern const struct icmp_err icmp_err_convert[];
  29#define ICMP_INC_STATS(net, field)      SNMP_INC_STATS((net)->mib.icmp_statistics, field)
  30#define __ICMP_INC_STATS(net, field)    __SNMP_INC_STATS((net)->mib.icmp_statistics, field)
  31#define ICMPMSGOUT_INC_STATS(net, field)        SNMP_INC_STATS_ATOMIC_LONG((net)->mib.icmpmsg_statistics, field+256)
  32#define ICMPMSGIN_INC_STATS(net, field)         SNMP_INC_STATS_ATOMIC_LONG((net)->mib.icmpmsg_statistics, field)
  33
  34struct dst_entry;
  35struct net_proto_family;
  36struct sk_buff;
  37struct net;
  38
  39void __icmp_send(struct sk_buff *skb_in, int type, int code, __be32 info,
  40                 const struct ip_options *opt);
  41static inline void icmp_send(struct sk_buff *skb_in, int type, int code, __be32 info)
  42{
  43        __icmp_send(skb_in, type, code, info, &IPCB(skb_in)->opt);
  44}
  45
  46int icmp_rcv(struct sk_buff *skb);
  47int icmp_err(struct sk_buff *skb, u32 info);
  48int icmp_init(void);
  49void icmp_out_count(struct net *net, unsigned char type);
  50
  51#endif  /* _ICMP_H */
  52