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 protocol. 81da177e4SLinus Torvalds * 91da177e4SLinus Torvalds * Version: @(#)icmp.h 1.0.3 04/28/93 101da177e4SLinus Torvalds * 111da177e4SLinus Torvalds * Author: Fred N. van Kempen, <waltje@uWalt.NL.Mugnet.ORG> 121da177e4SLinus Torvalds */ 131da177e4SLinus Torvalds #ifndef _LINUX_ICMP_H 141da177e4SLinus Torvalds #define _LINUX_ICMP_H 151da177e4SLinus Torvalds 1688c7664fSArnaldo Carvalho de Melo #include <linux/skbuff.h> 17607ca46eSDavid Howells #include <uapi/linux/icmp.h> 18eba75c58SWillem de Bruijn #include <uapi/linux/errqueue.h> 1988c7664fSArnaldo Carvalho de Melo icmp_hdr(const struct sk_buff * skb)2088c7664fSArnaldo Carvalho de Melostatic inline struct icmphdr *icmp_hdr(const struct sk_buff *skb) 2188c7664fSArnaldo Carvalho de Melo { 229c70220bSArnaldo Carvalho de Melo return (struct icmphdr *)skb_transport_header(skb); 2388c7664fSArnaldo Carvalho de Melo } 2415122464SMatteo Croce icmp_is_err(int type)2515122464SMatteo Crocestatic inline bool icmp_is_err(int type) 2615122464SMatteo Croce { 2715122464SMatteo Croce switch (type) { 2815122464SMatteo Croce case ICMP_DEST_UNREACH: 2915122464SMatteo Croce case ICMP_SOURCE_QUENCH: 3015122464SMatteo Croce case ICMP_REDIRECT: 3115122464SMatteo Croce case ICMP_TIME_EXCEEDED: 3215122464SMatteo Croce case ICMP_PARAMETERPROB: 3315122464SMatteo Croce return true; 3415122464SMatteo Croce } 3515122464SMatteo Croce 3615122464SMatteo Croce return false; 3715122464SMatteo Croce } 3815122464SMatteo Croce 39eba75c58SWillem de Bruijn void ip_icmp_error_rfc4884(const struct sk_buff *skb, 40178c49d9SWillem de Bruijn struct sock_ee_data_rfc4884 *out, 41178c49d9SWillem de Bruijn int thlen, int off); 42eba75c58SWillem de Bruijn 431da177e4SLinus Torvalds #endif /* _LINUX_ICMP_H */ 44