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#pragma once
#include <camellia/types.h>
#include <stdint.h>
typedef uint8_t mac_t[6];
static const mac_t MAC_BROADCAST = {0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF};
extern struct net_state {
mac_t mac;
uint32_t ip;
handle_t raw_h;
} state;
enum { /* ethertype */
ET_IPv4 = 0x800,
ET_ARP = 0x806,
};
struct ethernet {
const mac_t *src, *dst;
uint16_t type;
};
struct ipv4 {
struct ethernet e;
uint32_t src, dst;
uint8_t proto;
};
struct icmp {
struct ipv4 ip;
uint8_t type, code;
};
void arp_parse(const uint8_t *buf, size_t len);
void icmp_parse(const uint8_t *buf, size_t len, struct ipv4 ip);
uint8_t *icmp_start(size_t len, struct icmp i);
void icmp_finish(uint8_t *pkt);
void ipv4_parse(const uint8_t *buf, size_t len, struct ethernet ether);
uint8_t *ipv4_start(size_t len, struct ipv4 ip);
void ipv4_finish(uint8_t *pkt);
void ether_parse(const uint8_t *buf, size_t len);
uint8_t *ether_start(size_t len, struct ethernet ether);
void ether_finish(uint8_t *pkt);
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