fw/icmp.h (00d70be) - mips_sys · BlinkenArea

icmp.h

#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));

/// ICMP packet with padding
ETHERNET_PAD(icmp_packet);

// 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));

/// ICMP echo request/reply packet with padding
ETHERNET_PAD(icmp_echo_packet);

/**
 * @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

mips_sys

implemented IP + ICMP, fixed ARP (padding overwriting stack)