/* SPDX-License-Identifier: GPL-2.0-or-later */

  /*
   * INET		An implementation of the TCP/IP protocol suite for the LINUX
   *		operating system.  INET is implemented using the  BSD Socket
   *		interface as the means of communication with the user level.
   *
   *		Definitions for the ICMP protocol.
   *
   * Version:	@(#)icmp.h	1.0.3	04/28/93
   *
   * Author:	Fred N. van Kempen, <waltje@uWalt.NL.Mugnet.ORG>

   */
  #ifndef _LINUX_ICMP_H
  #define	_LINUX_ICMP_H

  #include <linux/skbuff.h>

  #include <uapi/linux/icmp.h>

  #include <uapi/linux/errqueue.h>

  
  static inline struct icmphdr *icmp_hdr(const struct sk_buff *skb)
  {

  	return (struct icmphdr *)skb_transport_header(skb);

  }

  
  static inline bool icmp_is_err(int type)
  {
  	switch (type) {
  	case ICMP_DEST_UNREACH:
  	case ICMP_SOURCE_QUENCH:
  	case ICMP_REDIRECT:
  	case ICMP_TIME_EXCEEDED:
  	case ICMP_PARAMETERPROB:
  		return true;
  	}
  
  	return false;
  }

  void ip_icmp_error_rfc4884(const struct sk_buff *skb,

  			   struct sock_ee_data_rfc4884 *out,
  			   int thlen, int off);

  #endif	/* _LINUX_ICMP_H */