1*4882a593Smuzhiyun /* SPDX-License-Identifier: GPL-2.0-or-later */ 2*4882a593Smuzhiyun /* 3*4882a593Smuzhiyun * INET An implementation of the TCP/IP protocol suite for the LINUX 4*4882a593Smuzhiyun * operating system. INET is implemented using the BSD Socket 5*4882a593Smuzhiyun * interface as the means of communication with the user level. 6*4882a593Smuzhiyun * 7*4882a593Smuzhiyun * Definitions for the ICMP protocol. 8*4882a593Smuzhiyun * 9*4882a593Smuzhiyun * Version: @(#)icmp.h 1.0.3 04/28/93 10*4882a593Smuzhiyun * 11*4882a593Smuzhiyun * Author: Fred N. van Kempen, <waltje@uWalt.NL.Mugnet.ORG> 12*4882a593Smuzhiyun */ 13*4882a593Smuzhiyun #ifndef _LINUX_ICMP_H 14*4882a593Smuzhiyun #define _LINUX_ICMP_H 15*4882a593Smuzhiyun 16*4882a593Smuzhiyun #include <linux/skbuff.h> 17*4882a593Smuzhiyun #include <uapi/linux/icmp.h> 18*4882a593Smuzhiyun #include <uapi/linux/errqueue.h> 19*4882a593Smuzhiyun icmp_hdr(const struct sk_buff * skb)20*4882a593Smuzhiyunstatic inline struct icmphdr *icmp_hdr(const struct sk_buff *skb) 21*4882a593Smuzhiyun { 22*4882a593Smuzhiyun return (struct icmphdr *)skb_transport_header(skb); 23*4882a593Smuzhiyun } 24*4882a593Smuzhiyun icmp_is_err(int type)25*4882a593Smuzhiyunstatic inline bool icmp_is_err(int type) 26*4882a593Smuzhiyun { 27*4882a593Smuzhiyun switch (type) { 28*4882a593Smuzhiyun case ICMP_DEST_UNREACH: 29*4882a593Smuzhiyun case ICMP_SOURCE_QUENCH: 30*4882a593Smuzhiyun case ICMP_REDIRECT: 31*4882a593Smuzhiyun case ICMP_TIME_EXCEEDED: 32*4882a593Smuzhiyun case ICMP_PARAMETERPROB: 33*4882a593Smuzhiyun return true; 34*4882a593Smuzhiyun } 35*4882a593Smuzhiyun 36*4882a593Smuzhiyun return false; 37*4882a593Smuzhiyun } 38*4882a593Smuzhiyun 39*4882a593Smuzhiyun void ip_icmp_error_rfc4884(const struct sk_buff *skb, 40*4882a593Smuzhiyun struct sock_ee_data_rfc4884 *out, 41*4882a593Smuzhiyun int thlen, int off); 42*4882a593Smuzhiyun 43*4882a593Smuzhiyun #endif /* _LINUX_ICMP_H */ 44