icmp.h (1029B)
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 protocol. 8 * 9 * Version: @(#)icmp.h 1.0.3 04/28/93 10 * 11 * Author: Fred N. van Kempen, <waltje@uWalt.NL.Mugnet.ORG> 12 */ 13#ifndef _LINUX_ICMP_H 14#define _LINUX_ICMP_H 15 16#include <linux/skbuff.h> 17#include <uapi/linux/icmp.h> 18#include <uapi/linux/errqueue.h> 19 20static inline struct icmphdr *icmp_hdr(const struct sk_buff *skb) 21{ 22 return (struct icmphdr *)skb_transport_header(skb); 23} 24 25static inline bool icmp_is_err(int type) 26{ 27 switch (type) { 28 case ICMP_DEST_UNREACH: 29 case ICMP_SOURCE_QUENCH: 30 case ICMP_REDIRECT: 31 case ICMP_TIME_EXCEEDED: 32 case ICMP_PARAMETERPROB: 33 return true; 34 } 35 36 return false; 37} 38 39void ip_icmp_error_rfc4884(const struct sk_buff *skb, 40 struct sock_ee_data_rfc4884 *out, 41 int thlen, int off); 42 43#endif /* _LINUX_ICMP_H */