#pragma once
#include <span>
#include "eth.h"
#include "ipv4.h"
#include "span_writer.h"

namespace arp {

struct __attribute__((packed)) header {
    uint16_t htype;
    uint16_t ptype;
    uint8_t hlen;
    uint8_t plen;
    uint16_t oper;
    eth::mac_addr sha;
    ipv4::ip4_addr spa;
    eth::mac_addr tha;
    ipv4::ip4_addr tpa;
};
static_assert(sizeof(header) == 28);

void handle(std::span<const uint8_t> frame, span_writer& tx);

} // namespace arp