github.com/looshlee/beatles@v0.0.0-20220727174639-742810ab631c/bpf/include/linux/icmp.h (about)

     1  /*
     2   * INET		An implementation of the TCP/IP protocol suite for the LINUX
     3   *		operating system.  INET is implemented using the  BSD Socket
     4   *		interface as the means of communication with the user level.
     5   *
     6   *		Definitions for the ICMP protocol.
     7   *
     8   * Version:	@(#)icmp.h	1.0.3	04/28/93
     9   *
    10   * Author:	Fred N. van Kempen, <waltje@uWalt.NL.Mugnet.ORG>
    11   *
    12   *		This program is free software; you can redistribute it and/or
    13   *		modify it under the terms of the GNU General Public License
    14   *		as published by the Free Software Foundation; either version
    15   *		2 of the License, or (at your option) any later version.
    16   */
    17  #ifndef _LINUX_ICMP_H
    18  #define _LINUX_ICMP_H
    19  
    20  #include <linux/type_mapper.h>
    21  
    22  #define ICMP_ECHOREPLY		0	/* Echo Reply			*/
    23  #define ICMP_DEST_UNREACH	3	/* Destination Unreachable	*/
    24  #define ICMP_SOURCE_QUENCH	4	/* Source Quench		*/
    25  #define ICMP_REDIRECT		5	/* Redirect (change route)	*/
    26  #define ICMP_ECHO		8	/* Echo Request			*/
    27  #define ICMP_TIME_EXCEEDED	11	/* Time Exceeded		*/
    28  #define ICMP_PARAMETERPROB	12	/* Parameter Problem		*/
    29  #define ICMP_TIMESTAMP		13	/* Timestamp Request		*/
    30  #define ICMP_TIMESTAMPREPLY	14	/* Timestamp Reply		*/
    31  #define ICMP_INFO_REQUEST	15	/* Information Request		*/
    32  #define ICMP_INFO_REPLY		16	/* Information Reply		*/
    33  #define ICMP_ADDRESS		17	/* Address Mask Request		*/
    34  #define ICMP_ADDRESSREPLY	18	/* Address Mask Reply		*/
    35  #define NR_ICMP_TYPES		18
    36  
    37  
    38  /* Codes for UNREACH. */
    39  #define ICMP_NET_UNREACH	0	/* Network Unreachable		*/
    40  #define ICMP_HOST_UNREACH	1	/* Host Unreachable		*/
    41  #define ICMP_PROT_UNREACH	2	/* Protocol Unreachable		*/
    42  #define ICMP_PORT_UNREACH	3	/* Port Unreachable		*/
    43  #define ICMP_FRAG_NEEDED	4	/* Fragmentation Needed/DF set	*/
    44  #define ICMP_SR_FAILED		5	/* Source Route failed		*/
    45  #define ICMP_NET_UNKNOWN	6
    46  #define ICMP_HOST_UNKNOWN	7
    47  #define ICMP_HOST_ISOLATED	8
    48  #define ICMP_NET_ANO		9
    49  #define ICMP_HOST_ANO		10
    50  #define ICMP_NET_UNR_TOS	11
    51  #define ICMP_HOST_UNR_TOS	12
    52  #define ICMP_PKT_FILTERED	13	/* Packet filtered */
    53  #define ICMP_PREC_VIOLATION	14	/* Precedence violation */
    54  #define ICMP_PREC_CUTOFF	15	/* Precedence cut off */
    55  #define NR_ICMP_UNREACH		15	/* instead of hardcoding immediate value */
    56  
    57  /* Codes for REDIRECT. */
    58  #define ICMP_REDIR_NET		0	/* Redirect Net			*/
    59  #define ICMP_REDIR_HOST		1	/* Redirect Host		*/
    60  #define ICMP_REDIR_NETTOS	2	/* Redirect Net for TOS		*/
    61  #define ICMP_REDIR_HOSTTOS	3	/* Redirect Host for TOS	*/
    62  
    63  /* Codes for TIME_EXCEEDED. */
    64  #define ICMP_EXC_TTL		0	/* TTL count exceeded		*/
    65  #define ICMP_EXC_FRAGTIME	1	/* Fragment Reass time exceeded	*/
    66  
    67  
    68  struct icmphdr {
    69    __u8		type;
    70    __u8		code;
    71    __sum16	checksum;
    72    union {
    73  	struct {
    74  		__be16	id;
    75  		__be16	sequence;
    76  	} echo;
    77  	__be32	gateway;
    78  	struct {
    79  		__be16	__unused;
    80  		__be16	mtu;
    81  	} frag;
    82    } un;
    83  };
    84  
    85  
    86  /*
    87   *	constants for (set|get)sockopt
    88   */
    89  
    90  #define ICMP_FILTER			1
    91  
    92  struct icmp_filter {
    93  	__u32		data;
    94  };
    95  
    96  
    97  #endif /* _LINUX_ICMP_H */