12874c5fdSThomas Gleixner /* SPDX-License-Identifier: GPL-2.0-or-later */ 21da177e4SLinus Torvalds /* 31da177e4SLinus Torvalds * INET An implementation of the TCP/IP protocol suite for the LINUX 41da177e4SLinus Torvalds * operating system. INET is implemented using the BSD Socket 51da177e4SLinus Torvalds * interface as the means of communication with the user level. 61da177e4SLinus Torvalds * 71da177e4SLinus Torvalds * Definitions for the ICMP module. 81da177e4SLinus Torvalds * 91da177e4SLinus Torvalds * Version: @(#)icmp.h 1.0.4 05/13/93 101da177e4SLinus Torvalds * 1102c30a84SJesper Juhl * Authors: Ross Biro 121da177e4SLinus Torvalds * Fred N. van Kempen, <waltje@uWalt.NL.Mugnet.ORG> 131da177e4SLinus Torvalds */ 141da177e4SLinus Torvalds #ifndef _ICMP_H 151da177e4SLinus Torvalds #define _ICMP_H 161da177e4SLinus Torvalds 171da177e4SLinus Torvalds #include <linux/icmp.h> 181da177e4SLinus Torvalds 1914c85021SArnaldo Carvalho de Melo #include <net/inet_sock.h> 201da177e4SLinus Torvalds #include <net/snmp.h> 219ef6b42aSNazarov Sergey #include <net/ip.h> 221da177e4SLinus Torvalds 231da177e4SLinus Torvalds struct icmp_err { 241da177e4SLinus Torvalds int errno; 2595c96174SEric Dumazet unsigned int fatal:1; 261da177e4SLinus Torvalds }; 271da177e4SLinus Torvalds 28e754834eSAlexey Dobriyan extern const struct icmp_err icmp_err_convert[]; 29b60538a0SPavel Emelyanov #define ICMP_INC_STATS(net, field) SNMP_INC_STATS((net)->mib.icmp_statistics, field) 3013415e46SEric Dumazet #define __ICMP_INC_STATS(net, field) __SNMP_INC_STATS((net)->mib.icmp_statistics, field) 31acb32ba3SEric Dumazet #define ICMPMSGOUT_INC_STATS(net, field) SNMP_INC_STATS_ATOMIC_LONG((net)->mib.icmpmsg_statistics, field+256) 32214d3f1fSEric Dumazet #define ICMPMSGIN_INC_STATS(net, field) SNMP_INC_STATS_ATOMIC_LONG((net)->mib.icmpmsg_statistics, field) 331da177e4SLinus Torvalds 3414c85021SArnaldo Carvalho de Melo struct dst_entry; 3514c85021SArnaldo Carvalho de Melo struct net_proto_family; 3614c85021SArnaldo Carvalho de Melo struct sk_buff; 370388b004SPavel Emelyanov struct net; 3814c85021SArnaldo Carvalho de Melo 399ef6b42aSNazarov Sergey void __icmp_send(struct sk_buff *skb_in, int type, int code, __be32 info, 409ef6b42aSNazarov Sergey const struct ip_options *opt); 419ef6b42aSNazarov Sergey static inline void icmp_send(struct sk_buff *skb_in, int type, int code, __be32 info) 429ef6b42aSNazarov Sergey { 439ef6b42aSNazarov Sergey __icmp_send(skb_in, type, code, info, &IPCB(skb_in)->opt); 449ef6b42aSNazarov Sergey } 459ef6b42aSNazarov Sergey 46*0b41713bSJason A. Donenfeld #if IS_ENABLED(CONFIG_NF_NAT) 47*0b41713bSJason A. Donenfeld void icmp_ndo_send(struct sk_buff *skb_in, int type, int code, __be32 info); 48*0b41713bSJason A. Donenfeld #else 49*0b41713bSJason A. Donenfeld #define icmp_ndo_send icmp_send 50*0b41713bSJason A. Donenfeld #endif 51*0b41713bSJason A. Donenfeld 52e60ab84dSJoe Perches int icmp_rcv(struct sk_buff *skb); 5332bbd879SStefano Brivio int icmp_err(struct sk_buff *skb, u32 info); 54e60ab84dSJoe Perches int icmp_init(void); 55e60ab84dSJoe Perches void icmp_out_count(struct net *net, unsigned char type); 561da177e4SLinus Torvalds 571da177e4SLinus Torvalds #endif /* _ICMP_H */ 58