tcp_connection Struct Reference

A TCP connection. More...

Data Fields
struct refcnt	refcnt
	Reference counter.
struct list_head	list
	List of TCP connections.
struct xfer_interface	xfer
	Data transfer interface.
int	xfer_closed
	Data transfer interface closed flag.
struct sockaddr_tcpip	peer
	Remote socket address.
unsigned int	local_port
	Local port, in network byte order.
unsigned int	tcp_state
	Current TCP state.
unsigned int	prev_tcp_state
	Previous TCP state.
uint32_t	snd_seq
	Current sequence number.
uint32_t	snd_sent
	Unacknowledged sequence count.
uint32_t	snd_win
	Send window.
uint32_t	rcv_ack
	Current acknowledgement number.
uint32_t	rcv_win
	Receive window.
uint32_t	ts_recent
	Most recent received timestamp.
int	timestamps
	Timestamps enabled.
struct list_head	queue
	Transmit queue.
struct retry_timer	timer
	Retransmission timer.

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Detailed Description

A TCP connection.

Definition at line 27 of file tcp.c.

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Field Documentation

struct refcnt tcp_connection::refcnt [read]

Reference counter.

Definition at line 29 of file tcp.c.

Referenced by tcp_close(), and tcp_open().

struct list_head tcp_connection::list [read]

List of TCP connections.

Definition at line 31 of file tcp.c.

Referenced by tcp_bind(), tcp_close(), tcp_demux(), and tcp_open().

struct xfer_interface tcp_connection::xfer [read]

Data transfer interface.

Definition at line 34 of file tcp.c.

Referenced by tcp_close(), tcp_open(), tcp_rx_data(), and tcp_xmit().

int tcp_connection::xfer_closed

Data transfer interface closed flag.

Definition at line 36 of file tcp.c.

Referenced by tcp_close(), and tcp_rx_ack().

struct sockaddr_tcpip tcp_connection::peer [read]

Remote socket address.

Definition at line 39 of file tcp.c.

Referenced by tcp_open(), and tcp_xmit().

unsigned int tcp_connection::local_port

Local port, in network byte order.

Definition at line 41 of file tcp.c.

Referenced by tcp_bind(), tcp_demux(), and tcp_xmit().

unsigned int tcp_connection::tcp_state

Current TCP state.

Definition at line 44 of file tcp.c.

Referenced by tcp_close(), tcp_expired(), tcp_open(), tcp_rx(), tcp_rx_ack(), tcp_rx_fin(), tcp_rx_rst(), tcp_rx_syn(), tcp_xmit(), and tcp_xmit_win().

unsigned int tcp_connection::prev_tcp_state

Previous TCP state.

Maintained only for debug messages

Definition at line 49 of file tcp.c.

Referenced by tcp_open().

uint32_t tcp_connection::snd_seq

Current sequence number.

Equivalent to SND.UNA in RFC 793 terminology.

Definition at line 54 of file tcp.c.

Referenced by tcp_close(), tcp_expired(), tcp_open(), tcp_rx_ack(), and tcp_xmit().

uint32_t tcp_connection::snd_sent

Unacknowledged sequence count.

Equivalent to (SND.NXT-SND.UNA) in RFC 793 terminology.

Definition at line 59 of file tcp.c.

Referenced by tcp_expired(), tcp_rx_ack(), and tcp_xmit().

uint32_t tcp_connection::snd_win

Send window.

Equivalent to SND.WND in RFC 793 terminology

Definition at line 64 of file tcp.c.

Referenced by tcp_rx_ack(), and tcp_xmit_win().

uint32_t tcp_connection::rcv_ack

Current acknowledgement number.

Equivalent to RCV.NXT in RFC 793 terminology.

Definition at line 69 of file tcp.c.

Referenced by tcp_expired(), tcp_rx(), tcp_rx_data(), tcp_rx_fin(), tcp_rx_rst(), tcp_rx_seq(), tcp_rx_syn(), and tcp_xmit().

uint32_t tcp_connection::rcv_win

Receive window.

Equivalent to RCV.WND in RFC 793 terminology.

Definition at line 74 of file tcp.c.

Referenced by tcp_rx(), tcp_rx_rst(), tcp_rx_seq(), and tcp_xmit().

uint32_t tcp_connection::ts_recent

Most recent received timestamp.

Equivalent to TS.Recent in RFC 1323 terminology.

Definition at line 79 of file tcp.c.

Referenced by tcp_rx(), and tcp_xmit().

int tcp_connection::timestamps

Timestamps enabled.

Definition at line 81 of file tcp.c.

Referenced by tcp_rx_syn(), and tcp_xmit().

struct list_head tcp_connection::queue [read]

Transmit queue.

Definition at line 84 of file tcp.c.

Referenced by tcp_close(), tcp_open(), tcp_process_queue(), tcp_rx_ack(), tcp_xfer_deliver_iob(), and tcp_xfer_window().

struct retry_timer tcp_connection::timer [read]

Retransmission timer.

Definition at line 86 of file tcp.c.

Referenced by tcp_close(), tcp_open(), tcp_rx(), tcp_rx_ack(), and tcp_xmit().

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The documentation for this struct was generated from the following file:

• net/tcp.c