TCP configuration options

The name of the function that should be called when UDP datagrams arrive. More...

Defines
#define	UIP_TCP
	Toggles whether UDP support should be compiled in or not.
#define	UIP_ACTIVE_OPEN
	Determines if support for opening connections from uIP should be compiled in.
#define	UIP_CONNS
	The maximum number of simultaneously open TCP connections.
#define	UIP_LISTENPORTS
	The maximum number of simultaneously listening TCP ports.
#define	UIP_URGDATA
	Determines if support for TCP urgent data notification should be compiled in.
#define	UIP_RTO   3
	The initial retransmission timeout counted in timer pulses.
#define	UIP_MAXRTX   8
	The maximum number of times a segment should be retransmitted before the connection should be aborted.
#define	UIP_MAXSYNRTX   5
	The maximum number of times a SYN segment should be retransmitted before a connection request should be deemed to have been unsuccessful.
#define	UIP_TCP_MSS   (UIP_BUFSIZE - UIP_LLH_LEN - UIP_TCPIP_HLEN)
	The TCP maximum segment size.
#define	UIP_RECEIVE_WINDOW
	The size of the advertised receiver's window.
#define	UIP_TIME_WAIT_TIMEOUT   120
	How long a connection should stay in the TIME_WAIT state.

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Detailed Description

The name of the function that should be called when UDP datagrams arrive.

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Define Documentation

#define UIP_ACTIVE_OPEN

Determines if support for opening connections from uIP should be compiled in.

If the applications that are running on top of uIP for this project do not need to open outgoing TCP connections, this configuration option can be turned off to reduce the code size of uIP.

Definition at line 311 of file uipopt.h.

#define UIP_CONNS

The maximum number of simultaneously open TCP connections.

Since the TCP connections are statically allocated, turning this configuration knob down results in less RAM used. Each TCP connection requires approximately 30 bytes of memory.

Definition at line 326 of file uipopt.h.

Referenced by uip_init(), and uip_process().

#define UIP_LISTENPORTS

The maximum number of simultaneously listening TCP ports.

Each listening TCP port requires 2 bytes of memory.

Definition at line 340 of file uipopt.h.

Referenced by uip_init(), uip_listen(), uip_process(), and uip_unlisten().

#define UIP_MAXRTX   8

The maximum number of times a segment should be retransmitted before the connection should be aborted.

This should not be changed.

Definition at line 369 of file uipopt.h.

Referenced by uip_process().

#define UIP_MAXSYNRTX   5

The maximum number of times a SYN segment should be retransmitted before a connection request should be deemed to have been unsuccessful.

This should not need to be changed.

Definition at line 378 of file uipopt.h.

Referenced by uip_process().

#define UIP_RECEIVE_WINDOW

The size of the advertised receiver's window.

Should be set low (i.e., to the size of the uip_buf buffer) if the application is slow to process incoming data, or high (32768 bytes) if the application processes data quickly.

Definition at line 402 of file uipopt.h.

Referenced by uip_process().

#define UIP_RTO   3

The initial retransmission timeout counted in timer pulses.

This should not be changed.

Definition at line 361 of file uipopt.h.

Referenced by uip_process().

#define UIP_TCP_MSS   (UIP_BUFSIZE - UIP_LLH_LEN - UIP_TCPIP_HLEN)

The TCP maximum segment size.

This is should not be to set to more than UIP_BUFSIZE - UIP_LLH_LEN - UIP_TCPIP_HLEN.

Definition at line 389 of file uipopt.h.

Referenced by uip_process(), and uip_split_output().

#define UIP_TIME_WAIT_TIMEOUT   120

How long a connection should stay in the TIME_WAIT state.

This can be reduced for faster entry into power saving modes.

Definition at line 413 of file uipopt.h.

Referenced by uip_process().

#define UIP_URGDATA

Determines if support for TCP urgent data notification should be compiled in.

Urgent data (out-of-band data) is a rarely used TCP feature that very seldom would be required.

Definition at line 354 of file uipopt.h.