tcp_socket_data Struct Reference
[Transmission Control Protocol (TCP) Service]

TCP socket specific data. More...

#include <tcp.h>

Data Fields
uint32_t	acknowledged
	Last acknowledged byte.
sockaddr *	addr
	Remote host address.
socklen_t	addrlen
	Remote host address length.
int	backlog
	Listening backlog.
size_t	data_fragment_size
	Data fragment size.
uint16_t	dest_port
	Remote host port.
device_id_t	device_id
	Device identifier.
uint32_t	expected
	Expected sequence number by the remote host.
int	expected_count
	Expected sequence number counter.
uint32_t	fin_incoming
	Incoming FIN.
uint32_t	fin_outgoing
	Outgoing FIN.
size_t	headerlen
	IP pseudo header length.
packet_t *	incoming
	Incoming packet queue.
uint32_t	last_outgoing
	Last outgoing sequence number.
int	listening_socket_id
	Parent listening socket identifier.
fibril_rwlock_t *	local_lock
	Local sockets safety lock.
socket_cores_t *	local_sockets
	Parent local sockets.
uint32_t	next_incoming
	Next incoming sequence number.
uint32_t	next_outgoing
	Next outgoing sequence number.
tcp_operation_t	operation
	Pending operation data.
packet_t *	outgoing
	Outgoing packet queue.
void *	pseudo_header
	IP pseudo header.
tcp_socket_state_t	state
	TCP socket state.
suseconds_t	timeout
	Acknowledgement timeout.
int	timeout_count
	Timeouts in a row counter.
size_t	treshold
	Treshold size in bytes.
size_t	window
	Window size in bytes.

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Detailed Description

TCP socket specific data.

Definition at line 173 of file tcp.h.

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Field Documentation

int backlog

Listening backlog.

The maximal number of connected but not yet accepted sockets.

Definition at line 190 of file tcp.h.

size_t data_fragment_size

Data fragment size.

Sending optimalization.

Definition at line 181 of file tcp.h.

uint32_t expected

Expected sequence number by the remote host.

The sequence number the other host expects. The notification is sent only upon a packet reecival.

Definition at line 222 of file tcp.h.

int expected_count

Expected sequence number counter.

Counts the number of received notifications for the same sequence number.

Definition at line 229 of file tcp.h.

packet_t* incoming

Incoming packet queue.

Packets are buffered until received in the right order. The packets are excluded after successfully read. Packets are sorted by their starting byte. Packets metric is set as their data length.

Definition at line 238 of file tcp.h.

int listening_socket_id

Parent listening socket identifier.

Set if this socket is an accepted one.

Definition at line 196 of file tcp.h.

fibril_rwlock_t* local_lock

Local sockets safety lock.

May be locked for writing while holding the global lock for reading when changing the local sockets only. The global lock may be locked only before locking the local lock. The global lock may be locked more weakly than the local lock. The global lock may be released before releasing the local lock.

See also:

tcp_globals:lock

Definition at line 272 of file tcp.h.

packet_t* outgoing

Outgoing packet queue.

Packets are buffered until acknowledged by the remote host in the right order. The packets are excluded after acknowledged. Packets are sorted by their starting byte. Packets metric is set as their data length.

Definition at line 248 of file tcp.h.

int timeout_count

Timeouts in a row counter.

If TCP_MAX_TIMEOUTS is reached, the connection is lost.

Definition at line 281 of file tcp.h.

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

• doxygen-tmp/development_branch/uspace/srv/net/tl/tcp/tcp.h

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