icmpv6.h

#ifndef CURO_ICMPV6_H
#define CURO_ICMPV6_H

#include "ipv6.h"
#include <iostream>

#define ICMPV6_TYPE_ECHO_REQUEST 128
#define ICMPV6_TYPE_ECHO_REPLY 129

#define ICMPV6_TYPE_ROUTER_SOLICIATION 133
#define ICMPV6_TYPE_NEIGHBOR_SOLICIATION 135
#define ICMPV6_TYPE_NEIGHBOR_ADVERTISEMENT 136

#define ICMPV6_NA_FLAG_ROUTER 0b10000000
#define ICMPV6_NA_FLAG_SOLICITED 0b01000000
#define ICMPV6_NA_FLAG_OVERRIDE 0b00100000

struct icmpv6_hdr {
  uint8_t type;
  uint8_t code;
  uint16_t checksum;
} __attribute__((packed));

struct icmpv6_echo {
  icmpv6_hdr hdr;
  uint16_t id;
  uint16_t seq;
  uint8_t data[];
} __attribute__((packed));

struct icmpv6_na {
  icmpv6_hdr hdr;
  uint8_t flags;
  uint8_t reserved1;
  uint16_t reserved2;
  in6_addr target_addr;
  // options area
  uint8_t opt_type;
  uint8_t opt_length;
  uint8_t opt_mac_addr[6];
} __attribute__((packed));

void icmpv6_input(ipv6_device *v6dev, in6_addr source, in6_addr dstination, void *buffer, size_t len);
void send_ns_packet(net_device *dev, in6_addr target_addr);

#endif // CURO_ICMPV6_H