#ifndef _NET_TCP_H
#define _NET_TCP_H

#include <net/net.h>

#define TCP_STATE_CLOSED      0
#define TCP_STATE_LISTEN      1
#define TCP_STATE_SYN_SENT    2
#define TCP_STATE_SYN_RCVD    3
#define TCP_STATE_ESTABLISHED 4
#define TCP_STATE_FIN_WAIT1   5
#define TCP_STATE_FIN_WAIT2   6
#define TCP_STATE_CLOSE_WAIT  7
#define TCP_STATE_CLOSING     8
#define TCP_STATE_LAST_ACK    9
#define TCP_STATE_TIME_WAIT   10

typedef struct {
    uint16_t src_port;
    uint16_t dst_port;
    uint32_t seq_num;
    uint32_t ack_num;
    uint8_t  data_offset_reserved;
    uint8_t  flags;
    uint16_t window_size;
    uint16_t checksum;
    uint16_t urgent_pointer;
} __attribute__((packed)) tcp_header_t;

void tcp_init(void);
void tcp_receive(const uint8_t* packet, uint16_t length, uint32_t src_ip);

#endif // _NET_TCP_H