#ifndef KERNEL_NET_H
#define KERNEL_NET_H

#include <stdint.h>
#include <stddef.h>

typedef struct NetIF NetIF;

/* Structure for a Network Interface */
struct NetIF {
	uint16_t type;
	void (*transmit)(void *, size_t);
	void (*get_mac)(char *);

	uint8_t ip[4], mac[6];
	uint8_t gatewayIp[4], gatewayMac[6];
	uint8_t dnsIp[4], dnsMac[6];
	NetIF *next;
};

uint16_t htons(uint16_t hostshort);
uint32_t htonl(uint32_t hostlong);
uint16_t ntohs(uint16_t hostshort);
uint32_t ntohl(uint32_t hostlong);
void init_net(void);
NetIF *net_create_interface(uint16_t type, void (*transmit)(void *, size_t),
                            void (*get_mac)(char *buf));

void ethernet_receive_frame(NetIF *netif, void *data, size_t len);
void ethernet_send_frame(NetIF *netif, uint8_t dst[6], uint16_t type,
                         void *data, size_t len);

void arp_receive_packet(NetIF *netif, void *data, size_t len);
void arp_request(NetIF *netif, uint8_t dstIp[4], uint8_t *res);

void ipv4_receive_packet(NetIF *netif, void *data, size_t len);
void ipv4_send_packet(NetIF *netif, uint8_t dst[4], uint8_t proto,
                      uint16_t flags, void *data, size_t len);

#endif