Line data    Source code

       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             : 
      23             : struct icmp_err {
      24             :   int           errno;
      25             :   unsigned int  fatal:1;
      26             : };
      27             : 
      28             : extern 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             : 
      34             : struct dst_entry;
      35             : struct net_proto_family;
      36             : struct sk_buff;
      37             : struct net;
      38             : 
      39             : void __icmp_send(struct sk_buff *skb_in, int type, int code, __be32 info,
      40             :                  const struct ip_options *opt);
      41           0 : static inline void icmp_send(struct sk_buff *skb_in, int type, int code, __be32 info)
      42             : {
      43           0 :         __icmp_send(skb_in, type, code, info, &IPCB(skb_in)->opt);
      44           0 : }
      45             : 
      46             : #if IS_ENABLED(CONFIG_NF_NAT)
      47             : void icmp_ndo_send(struct sk_buff *skb_in, int type, int code, __be32 info);
      48             : #else
      49             : static inline void icmp_ndo_send(struct sk_buff *skb_in, int type, int code, __be32 info)
      50             : {
      51             :         struct ip_options opts = { 0 };
      52             :         __icmp_send(skb_in, type, code, info, &opts);
      53             : }
      54             : #endif
      55             : 
      56             : int icmp_rcv(struct sk_buff *skb);
      57             : int icmp_err(struct sk_buff *skb, u32 info);
      58             : int icmp_init(void);
      59             : void icmp_out_count(struct net *net, unsigned char type);
      60             : 
      61             : #endif  /* _ICMP_H */