/*
* Copyright ( c ) 2004 , Swedish Institute of Computer Science .
* All rights reserved .
*
* Redistribution and use in source and binary forms , with or without
* modification , are permitted provided that the following conditions
* are met :
* 1. Redistributions of source code must retain the above copyright
* notice , this list of conditions and the following disclaimer .
* 2. Redistributions in binary form must reproduce the above copyright
* notice , this list of conditions and the following disclaimer in the
* documentation and / or other materials provided with the distribution .
* 3. Neither the name of the Institute nor the names of its contributors
* may be used to endorse or promote products derived from this software
* without specific prior written permission .
*
* THIS SOFTWARE IS PROVIDED BY THE INSTITUTE AND CONTRIBUTORS ` ` AS IS ' ' AND
* ANY EXPRESS OR IMPLIED WARRANTIES , INCLUDING , BUT NOT LIMITED TO , THE
* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
* ARE DISCLAIMED . IN NO EVENT SHALL THE INSTITUTE OR CONTRIBUTORS BE LIABLE
* FOR ANY DIRECT , INDIRECT , INCIDENTAL , SPECIAL , EXEMPLARY , OR CONSEQUENTIAL
* DAMAGES ( INCLUDING , BUT NOT LIMITED TO , PROCUREMENT OF SUBSTITUTE GOODS
* OR SERVICES ; LOSS OF USE , DATA , OR PROFITS ; OR BUSINESS INTERRUPTION )
* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY , WHETHER IN CONTRACT , STRICT
* LIABILITY , OR TORT ( INCLUDING NEGLIGENCE OR OTHERWISE ) ARISING IN ANY WAY
* OUT OF THE USE OF THIS SOFTWARE , EVEN IF ADVISED OF THE POSSIBILITY OF
* SUCH DAMAGE .
*
* This file is part of the Contiki operating system .
*
* Author : Adam Dunkels < adam @ sics . se >
*
* $ Id : uip - split . h , v 1.1 2006 / 06 / 17 22 : 41 : 19 adamdunkels Exp $
*/
/**
* \ addtogroup uip
* @ {
*/
/**
* \ defgroup uipsplit uIP TCP throughput booster hack
* @ {
*
* The basic uIP TCP implementation only allows each TCP connection to
* have a single TCP segment in flight at any given time . Because of
* the delayed ACK algorithm employed by most TCP receivers , uIP ' s
* limit on the amount of in - flight TCP segments seriously reduces the
* maximum achievable throughput for sending data from uIP .
*
* The uip - split module is a hack which tries to remedy this
* situation . By splitting maximum sized outgoing TCP segments into
* two , the delayed ACK algorithm is not invoked at TCP
* receivers . This improves the throughput when sending data from uIP
* by orders of magnitude .
*
* The uip - split module uses the uip - fw module ( uIP IP packet
* forwarding ) for sending packets . Therefore , the uip - fw module must
* be set up with the appropriate network interfaces for this module
* to work .
*/
/**
* \ file
* Module for splitting outbound TCP segments in two to avoid the
* delayed ACK throughput degradation .
* \ author
* Adam Dunkels < adam @ sics . se >
*
*/
# ifndef __UIP_SPLIT_H__
# define __UIP_SPLIT_H__
# include <string.h>
# include <uip.h>
# include "../../USBHostMode.h"
# include <LUFA/Drivers/USB/USB.h>
/**
* Handle outgoing packets .
*
* This function inspects an outgoing packet in the uip_buf buffer and
* sends it out using the uip_fw_output ( ) function . If the packet is a
* full - sized TCP segment it will be split into two segments and
* transmitted separately . This function should be called instead of
* the actual device driver output function , or the uip_fw_output ( )
* function .
*
* The headers of the outgoing packet is assumed to be in the uip_buf
* buffer and the payload is assumed to be wherever uip_appdata
* points . The length of the outgoing packet is assumed to be in the
* uip_len variable .
*
*/
void uip_split_output ( void ) ;
void uip_add32 ( u8_t * op32 , u16_t op16 ) ;
# endif /* __UIP_SPLIT_H__ */
/** @} */
/** @} */
