Line data    Source code

       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             : 
      20          42 : static inline struct icmphdr *icmp_hdr(const struct sk_buff *skb)
      21             : {
      22          42 :         return (struct icmphdr *)skb_transport_header(skb);
      23             : }
      24             : 
      25           0 : static inline bool icmp_is_err(int type)
      26             : {
      27           0 :         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 */