icmp.h

#ifndef ICMP_H
#define ICMP_H

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

#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_error_tx (struct netif *iface, uint8_t type, uint8_t code, uint8_t *dgram, size_t dlen);
extern int
icmp_init (void);

#endif