mips_sys

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#ifndef ICMP_H
#define ICMP_H
#include "ethernet.h"
#include "ip.h"
/// header of ICMP packet
struct icmp_header
{
  unsigned char type;
  unsigned char code;
  unsigned short chk;
} __attribute__((packed));
/// ICMP packet
struct icmp_packet
{
  struct ethernet_header eth_hdr;
  struct ip_header ip_hdr;
  struct icmp_header icmp_hdr;
} __attribute__((packed));
// header of ICMP echo request/reply packet
struct icmp_echo_header
{
  unsigned short id;
  unsigned short seq;
} __attribute__((packed));
/// ICMP echo request/reply packet
struct icmp_echo_packet
{
  struct ethernet_header eth_hdr;
  struct ip_header ip_hdr;
  struct icmp_header icmp_hdr;
  struct icmp_echo_header echo_hdr;
} __attribute__((packed));
/**
 * @brief process a received ICMP packet
 * @param[in] ptr pointer to data of packet
 * @param[in] sz size of packet
 */
void icmp_recv(void *ptr, unsigned int sz);
#endif // #ifdef ICMP_H
 
 
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