gnrc_tcp_fsm.h File Reference

TCP finite state machine declarations. More...

Detailed Description

TCP finite state machine declarations.

Author

Simon Brummer simon.nosp@m..bru.nosp@m.mmer@.nosp@m.post.nosp@m.eo.de

Definition in file gnrc_tcp_fsm.h.

#include <stdint.h>
#include "mbox.h"
#include "net/gnrc.h"
#include "net/gnrc/tcp/tcb.h"

Include dependency graph for gnrc_tcp_fsm.h:

Go to the source code of this file.

enum	_gnrc_tcp_fsm_state_t {   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 }
	The TCP FSM states. More...
enum	_gnrc_tcp_fsm_event_t {   FSM_EVENT_CALL_OPEN , FSM_EVENT_CALL_SEND , FSM_EVENT_CALL_RECV , FSM_EVENT_CALL_CLOSE ,   FSM_EVENT_CALL_ABORT , FSM_EVENT_RCVD_PKT , FSM_EVENT_TIMEOUT_TIMEWAIT , FSM_EVENT_TIMEOUT_RETRANSMIT ,   FSM_EVENT_TIMEOUT_CONNECTION , FSM_EVENT_SEND_PROBE , FSM_EVENT_CLEAR_RETRANSMIT }
	Events that trigger transitions in TCP FSM. More...
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)
	TCP finite state machine.
void	_gnrc_tcp_fsm_set_mbox (gnrc_tcp_tcb_t *tcb, mbox_t *mbox)
	Associate mbox with tcb.
_gnrc_tcp_fsm_state_t	_gnrc_tcp_fsm_get_state (gnrc_tcp_tcb_t *tcb)
	Get latest FSM state from given TCB.

Enumeration Type Documentation

_gnrc_tcp_fsm_event_t

enum _gnrc_tcp_fsm_event_t

Events that trigger transitions in TCP FSM.

Definition at line 51 of file gnrc_tcp_fsm.h.

_gnrc_tcp_fsm_state_t

enum _gnrc_tcp_fsm_state_t

The TCP FSM states.

Definition at line 34 of file gnrc_tcp_fsm.h.

Function Documentation

_gnrc_tcp_fsm()

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 )

TCP finite state machine.

Parameters

[in,out]	tcb	TCB holding the connection information.
[in]	event	Current event that triggers FSM transition.
[in]	in_pkt	Incoming packet. Only not NULL in case of event RCVD_PKT.
[in,out]	buf	Buffer for send and receive functions.
[in]	len	Number of bytes to send or receive.

Returns

Zero on success Positive Number, number of bytes sent from or copied into buf. -ENOSYS if event is not implemented

_gnrc_tcp_fsm_get_state()

_gnrc_tcp_fsm_state_t _gnrc_tcp_fsm_get_state

(

gnrc_tcp_tcb_t *

tcb

)

Get latest FSM state from given TCB.

Parameters

[in]

tcb

TCB to get state from.

Returns

Current TCB state.

_gnrc_tcp_fsm_set_mbox()

void _gnrc_tcp_fsm_set_mbox	(	gnrc_tcp_tcb_t *	tcb,
		mbox_t *	mbox )

Associate mbox with tcb.

Messages sent from the FSM will be stored in the mbox.

Parameters

[in,out]	tcb	TCB to set message box on.
[in]	mbox	Message box used to store messages from the FSM. If mbox is NULL, no messages will be stored.