uip_conn Struct Reference

#include <uip.h>

Collaboration diagram for uip_conn:

Data Fields
uip_ipaddr_t	ripaddr
uint16_t	lport
uint16_t	rport
uint8_t	rcv_nxt [4]
uint8_t	snd_nxt [4]
struct dlist_t	backlog
uint16_t	len
uint16_t	mss
uint16_t	initialmss
uint16_t	window
uint8_t	sa
uint8_t	sv
uint8_t	rto
uint8_t	tcpstateflags
uint8_t	timer
uint8_t	nrtx
uint8_t	arpid
uip_tcp_appstate_t	appstate

Detailed Description

Representation of a uIP TCP connection.

The uip_conn structure is used for identifying a connection. All but one field in the structure are to be considered read-only by an application. The only exception is the appstate field whose purpose is to let the application store application-specific state (e.g., file pointers) for the connection. The type of this field is configured in the "uipopt.h" header file.

Definition at line 1346 of file uip.h.

Field Documentation

uip_ipaddr_t uip_conn::ripaddr

The IP address of the remote host.

Definition at line 1347 of file uip.h.

Referenced by tcpip_output(), uip_init(), uip_process(), and uip_send().

uint16_t uip_conn::lport

The local TCP port, in network byte order.

Definition at line 1349 of file uip.h.

Referenced by tcpip_input(), uip_init(), and uip_process().

uint16_t uip_conn::rport

The local remote TCP port, in network byte order.

Definition at line 1350 of file uip.h.

Referenced by uip_init(), and uip_process().

uint8_t uip_conn::rcv_nxt[4]

The sequence number that we expect to receive next.

Definition at line 1353 of file uip.h.

Referenced by uip_listen(), and uip_process().

uint8_t uip_conn::snd_nxt[4]

The sequence number that was last sent by us.

Definition at line 1355 of file uip.h.

Referenced by uip_init(), and uip_process().

struct dlist_t uip_conn::backlog

Rexmit backlog

Definition at line 1357 of file uip.h.

Referenced by uip_process().

uint16_t uip_conn::len

Number of bytes in the pipe

Definition at line 1358 of file uip.h.

Referenced by uip_init(), uip_process(), and uip_send().

uint16_t uip_conn::mss

Current maximum segment size for the connection.

Definition at line 1359 of file uip.h.

Referenced by uip_init(), uip_process(), and uip_send().

uint16_t uip_conn::initialmss

Initial maximum segment size for the connection.

Definition at line 1361 of file uip.h.

Referenced by uip_init(), and uip_process().

uint16_t uip_conn::window

TX window size

Definition at line 1363 of file uip.h.

Referenced by uip_init(), uip_process(), and uip_send().

uint8_t uip_conn::sa

Retransmission time-out calculation state variable.

Definition at line 1364 of file uip.h.

Referenced by uip_init(), and uip_process().

uint8_t uip_conn::sv

Retransmission time-out calculation state variable.

Definition at line 1366 of file uip.h.

Referenced by uip_init(), and uip_process().

uint8_t uip_conn::rto

Retransmission time-out.

Definition at line 1368 of file uip.h.

Referenced by uip_init(), and uip_process().

uint8_t uip_conn::tcpstateflags

TCP state and flags.

Definition at line 1369 of file uip.h.

Referenced by tcpip_output(), uip_init(), and uip_process().

uint8_t uip_conn::timer

The retransmission timer.

Definition at line 1370 of file uip.h.

Referenced by uip_init(), and uip_process().

uint8_t uip_conn::nrtx

The number of retransmissions for the last segment sent.

Definition at line 1371 of file uip.h.

Referenced by uip_init(), and uip_process().

uint8_t uip_conn::arpid

ARP entry index

Definition at line 1374 of file uip.h.

Referenced by uip_init(), and uip_process().

uip_tcp_appstate_t uip_conn::appstate

The application state.

Definition at line 1377 of file uip.h.

Referenced by tcpip_input(), and tcpip_output().