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 icmp_hdr(const struct sk_buff * skb)20static inline struct icmphdr *icmp_hdr(const struct sk_buff *skb) 21 { 22 return (struct icmphdr *)skb_transport_header(skb); 23 } 24 icmp_is_err(int type)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 39 void 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 */ 44