microps/icmp.h at master · funkyenough/microps · GitHub

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#ifndef ICMP_H
#define ICMP_H

#include <stddef.h>
#include <stdint.h>

#include "ip.h"

#define ICMP_HDR_SIZE 8

#define ICMP_TYPE_ECHOREPLY           0
#define ICMP_TYPE_DEST_UNREACH        3
#define ICMP_TYPE_SOURCE_QUENCH       4
#define ICMP_TYPE_REDIRECT            5
#define ICMP_TYPE_ECHO                8
#define ICMP_TYPE_TIME_EXCEEDED      11
#define ICMP_TYPE_PARAM_PROBLEM      12
#define ICMP_TYPE_TIMESTAMP          13
#define ICMP_TYPE_TIMESTAMPREPLY     14
#define ICMP_TYPE_INFO_REQUEST       15
#define ICMP_TYPE_INFO_REPLY         16

/* for UNREACH */
#define ICMP_CODE_NET_UNREACH         0
#define ICMP_CODE_HOST_UNREACH        1
#define ICMP_CODE_PROTO_UNREACH       2
#define ICMP_CODE_PORT_UNREACH        3
#define ICMP_CODE_FRAGMENT_NEEDED     4
#define ICMP_CODE_SOURCE_ROUTE_FAILED 5

/* for REDIRECT */
#define ICMP_CODE_REDIRECT_NET        0
#define ICMP_CODE_REDIRECT_HOST       1
#define ICMP_CODE_REDIRECT_TOS_NET    2
#define ICMP_CODE_REDIRECT_TOS_HOST   3

/* for TIME_EXEEDED */
#define ICMP_CODE_EXCEEDED_TTL        0
#define ICMP_CODE_EXCEEDED_FRAGMENT   1

extern int
icmp_output(uint8_t type, uint8_t code, uint32_t values, const uint8_t *data, size_t len, ip_addr_t src, ip_addr_t dst);
extern int
icmp_init(void);

#endif