gnrc_tcp_fsm.h

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/*
 * Copyright (C) 2015-2017 Simon Brummer
 *
 * This file is subject to the terms and conditions of the GNU Lesser
 * General Public License v2.1. See the file LICENSE in the top level
 * directory for more details.
 */
 
#pragma once

 
#include <stdint.h>
#include "mbox.h"
#include "net/gnrc.h"
#include "net/gnrc/tcp/tcb.h"
 
#ifdef __cplusplus
extern "C" {
#endif

typedef enum {
    FSM_STATE_CLOSED = 0,
    FSM_STATE_LISTEN,
    FSM_STATE_SYN_SENT,
    FSM_STATE_SYN_RCVD,
    FSM_STATE_ESTABLISHED,
    FSM_STATE_CLOSE_WAIT,
    FSM_STATE_LAST_ACK,
    FSM_STATE_FIN_WAIT_1,
    FSM_STATE_FIN_WAIT_2,
    FSM_STATE_CLOSING,
    FSM_STATE_TIME_WAIT
} _gnrc_tcp_fsm_state_t;

typedef enum {
    FSM_EVENT_CALL_OPEN,          /* User function call: open */
    FSM_EVENT_CALL_SEND,          /* User function call: send */
    FSM_EVENT_CALL_RECV,          /* User function call: recv */
    FSM_EVENT_CALL_CLOSE,         /* User function call: close */
    FSM_EVENT_CALL_ABORT,         /* User function call: abort */
    FSM_EVENT_RCVD_PKT,           /* Packet received from peer */
    FSM_EVENT_TIMEOUT_TIMEWAIT,   /* Timeout: timewait */
    FSM_EVENT_TIMEOUT_RETRANSMIT, /* Timeout: retransmit */
    FSM_EVENT_TIMEOUT_CONNECTION, /* Timeout: connection */
    FSM_EVENT_SEND_PROBE,         /* Send zero window probe */
    FSM_EVENT_CLEAR_RETRANSMIT    /* Clear retransmission mechanism */
} _gnrc_tcp_fsm_event_t;

int _gnrc_tcp_fsm(gnrc_tcp_tcb_t *tcb, _gnrc_tcp_fsm_event_t event,
                  gnrc_pktsnip_t *in_pkt, void *buf, size_t len);

void _gnrc_tcp_fsm_set_mbox(gnrc_tcp_tcb_t *tcb, mbox_t *mbox);

_gnrc_tcp_fsm_state_t _gnrc_tcp_fsm_get_state(gnrc_tcp_tcb_t *tcb);
 
#ifdef __cplusplus
}
#endif