540 lines
14 KiB
C
540 lines
14 KiB
C
/**
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* \defgroup uipopt Configuration options for uIP
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* @{
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*
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* uIP is configured using the per-project configuration file
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* uipopt.h. This file contains all compile-time options for uIP and
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* should be tweaked to match each specific project. The uIP
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* distribution contains a documented example "uipopt.h" that can be
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* copied and modified for each project.
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*
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* \note Most of the configuration options in the uipopt.h should not
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* be changed, but rather the per-project uip-conf.h file.
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*/
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/**
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* \file
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* Configuration options for uIP.
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* \author Adam Dunkels <adam@dunkels.com>
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*
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* This file is used for tweaking various configuration options for
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* uIP. You should make a copy of this file into one of your project's
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* directories instead of editing this example "uipopt.h" file that
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* comes with the uIP distribution.
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*/
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/*
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* Copyright (c) 2001-2003, Adam Dunkels.
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* All rights reserved.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions
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* are met:
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* 1. Redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer.
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* 2. Redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in the
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* documentation and/or other materials provided with the distribution.
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* 3. The name of the author may not be used to endorse or promote
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* products derived from this software without specific prior
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* written permission.
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*
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* THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS
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* OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
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* WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
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* ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY
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* DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
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* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE
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* GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
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* INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY,
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* WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING
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* NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
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* SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
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*
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* This file is part of the uIP TCP/IP stack.
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*
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* $Id: uipopt.h,v 1.4 2006/06/12 08:00:31 adam Exp $
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*
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*/
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#ifndef __UIPOPT_H__
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#define __UIPOPT_H__
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#ifndef UIP_LITTLE_ENDIAN
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#define UIP_LITTLE_ENDIAN 3412
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#endif /* UIP_LITTLE_ENDIAN */
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#ifndef UIP_BIG_ENDIAN
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#define UIP_BIG_ENDIAN 1234
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#endif /* UIP_BIG_ENDIAN */
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#include "uip-conf.h"
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/*------------------------------------------------------------------------------*/
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/**
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* \name Static configuration options
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* @{
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*
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* These configuration options can be used for setting the IP address
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* settings statically, but only if UIP_FIXEDADDR is set to 1. The
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* configuration options for a specific node includes IP address,
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* netmask and default router as well as the Ethernet address. The
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* netmask, default router and Ethernet address are appliciable only
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* if uIP should be run over Ethernet.
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*
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* All of these should be changed to suit your project.
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*/
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/**
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* Determines if uIP should use a fixed IP address or not.
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*
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* If uIP should use a fixed IP address, the settings are set in the
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* uipopt.h file. If not, the macros uip_sethostaddr(),
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* uip_setdraddr() and uip_setnetmask() should be used instead.
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*
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* \hideinitializer
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*/
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#define UIP_FIXEDADDR 0
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/**
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* Ping IP address asignment.
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*
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* uIP uses a "ping" packets for setting its own IP address if this
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* option is set. If so, uIP will start with an empty IP address and
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* the destination IP address of the first incoming "ping" (ICMP echo)
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* packet will be used for setting the hosts IP address.
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*
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* \note This works only if UIP_FIXEDADDR is 0.
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*
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* \hideinitializer
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*/
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#ifdef UIP_CONF_PINGADDRCONF
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#define UIP_PINGADDRCONF UIP_CONF_PINGADDRCONF
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#else /* UIP_CONF_PINGADDRCONF */
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#define UIP_PINGADDRCONF 0
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#endif /* UIP_CONF_PINGADDRCONF */
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/**
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* Specifies if the uIP ARP module should be compiled with a fixed
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* Ethernet MAC address or not.
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*
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* If this configuration option is 0, the macro uip_setethaddr() can
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* be used to specify the Ethernet address at run-time.
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*
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* \hideinitializer
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*/
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#define UIP_FIXEDETHADDR 0
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/** @} */
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/*------------------------------------------------------------------------------*/
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/**
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* \name IP configuration options
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* @{
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*
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*/
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/**
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* The IP TTL (time to live) of IP packets sent by uIP.
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*
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* This should normally not be changed.
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*/
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#define UIP_TTL 64
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/**
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* Turn on support for IP packet reassembly.
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*
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* uIP supports reassembly of fragmented IP packets. This features
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* requires an additonal amount of RAM to hold the reassembly buffer
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* and the reassembly code size is approximately 700 bytes. The
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* reassembly buffer is of the same size as the uip_buf buffer
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* (configured by UIP_BUFSIZE).
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*
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* \note IP packet reassembly is not heavily tested.
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*
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* \hideinitializer
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*/
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#define UIP_REASSEMBLY 0
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/**
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* The maximum time an IP fragment should wait in the reassembly
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* buffer before it is dropped.
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*
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*/
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#define UIP_REASS_MAXAGE 40
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/** @} */
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/*------------------------------------------------------------------------------*/
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/**
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* \name UDP configuration options
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* @{
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*/
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/**
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* Toggles wether UDP support should be compiled in or not.
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*
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* \hideinitializer
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*/
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#ifdef UIP_CONF_UDP
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#define UIP_UDP UIP_CONF_UDP
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#else /* UIP_CONF_UDP */
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#define UIP_UDP 0
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#endif /* UIP_CONF_UDP */
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/**
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* Toggles if UDP checksums should be used or not.
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*
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* \note Support for UDP checksums is currently not included in uIP,
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* so this option has no function.
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*
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* \hideinitializer
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*/
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#ifdef UIP_CONF_UDP_CHECKSUMS
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#define UIP_UDP_CHECKSUMS UIP_CONF_UDP_CHECKSUMS
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#else
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#define UIP_UDP_CHECKSUMS 0
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#endif
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/**
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* The maximum amount of concurrent UDP connections.
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*
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* \hideinitializer
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*/
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#ifdef UIP_CONF_UDP_CONNS
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#define UIP_UDP_CONNS UIP_CONF_UDP_CONNS
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#else /* UIP_CONF_UDP_CONNS */
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#define UIP_UDP_CONNS 10
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#endif /* UIP_CONF_UDP_CONNS */
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/**
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* The name of the function that should be called when UDP datagrams arrive.
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*
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* \hideinitializer
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*/
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/** @} */
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/*------------------------------------------------------------------------------*/
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/**
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* \name TCP configuration options
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* @{
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*/
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/**
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* Determines if support for opening connections from uIP should be
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* compiled in.
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*
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* If the applications that are running on top of uIP for this project
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* do not need to open outgoing TCP connections, this configration
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* option can be turned off to reduce the code size of uIP.
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*
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* \hideinitializer
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*/
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#define UIP_ACTIVE_OPEN 1
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/**
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* The maximum number of simultaneously open TCP connections.
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*
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* Since the TCP connections are statically allocated, turning this
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* configuration knob down results in less RAM used. Each TCP
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* connection requires approximatly 30 bytes of memory.
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*
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* \hideinitializer
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*/
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#ifndef UIP_CONF_MAX_CONNECTIONS
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#define UIP_CONNS 10
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#else /* UIP_CONF_MAX_CONNECTIONS */
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#define UIP_CONNS UIP_CONF_MAX_CONNECTIONS
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#endif /* UIP_CONF_MAX_CONNECTIONS */
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/**
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* The maximum number of simultaneously listening TCP ports.
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*
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* Each listening TCP port requires 2 bytes of memory.
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*
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* \hideinitializer
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*/
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#ifndef UIP_CONF_MAX_LISTENPORTS
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#define UIP_LISTENPORTS 20
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#else /* UIP_CONF_MAX_LISTENPORTS */
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#define UIP_LISTENPORTS UIP_CONF_MAX_LISTENPORTS
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#endif /* UIP_CONF_MAX_LISTENPORTS */
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/**
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* Determines if support for TCP urgent data notification should be
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* compiled in.
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*
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* Urgent data (out-of-band data) is a rarely used TCP feature that
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* very seldom would be required.
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*
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* \hideinitializer
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*/
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#define UIP_URGDATA 0
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/**
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* The initial retransmission timeout counted in timer pulses.
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*
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* This should not be changed.
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*/
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#define UIP_RTO 3
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/**
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* The maximum number of times a segment should be retransmitted
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* before the connection should be aborted.
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*
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* This should not be changed.
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*/
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#define UIP_MAXRTX 8
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/**
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* The maximum number of times a SYN segment should be retransmitted
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* before a connection request should be deemed to have been
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* unsuccessful.
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*
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* This should not need to be changed.
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*/
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#define UIP_MAXSYNRTX 5
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/**
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* The TCP maximum segment size.
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*
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* This is should not be to set to more than
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* UIP_BUFSIZE - UIP_LLH_LEN - UIP_TCPIP_HLEN.
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*/
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#define UIP_TCP_MSS (UIP_BUFSIZE - UIP_LLH_LEN - UIP_TCPIP_HLEN)
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/**
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* The size of the advertised receiver's window.
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*
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* Should be set low (i.e., to the size of the uip_buf buffer) is the
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* application is slow to process incoming data, or high (32768 bytes)
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* if the application processes data quickly.
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*
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* \hideinitializer
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*/
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#ifndef UIP_CONF_RECEIVE_WINDOW
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#define UIP_RECEIVE_WINDOW UIP_TCP_MSS
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#else
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#define UIP_RECEIVE_WINDOW UIP_CONF_RECEIVE_WINDOW
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#endif
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/**
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* How long a connection should stay in the TIME_WAIT state.
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*
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* This configiration option has no real implication, and it should be
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* left untouched.
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*/
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#define UIP_TIME_WAIT_TIMEOUT 120
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/** @} */
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/*------------------------------------------------------------------------------*/
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/**
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* \name ARP configuration options
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* @{
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*/
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/**
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* The size of the ARP table.
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*
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* This option should be set to a larger value if this uIP node will
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* have many connections from the local network.
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*
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* \hideinitializer
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*/
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#ifdef UIP_CONF_ARPTAB_SIZE
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#define UIP_ARPTAB_SIZE UIP_CONF_ARPTAB_SIZE
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#else
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#define UIP_ARPTAB_SIZE 8
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#endif
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/**
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* The maxium age of ARP table entries measured in 10ths of seconds.
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*
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* An UIP_ARP_MAXAGE of 120 corresponds to 20 minutes (BSD
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* default).
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*/
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#define UIP_ARP_MAXAGE 120
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/** @} */
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/*------------------------------------------------------------------------------*/
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/**
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* \name General configuration options
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* @{
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*/
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/**
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* The size of the uIP packet buffer.
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*
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* The uIP packet buffer should not be smaller than 60 bytes, and does
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* not need to be larger than 1500 bytes. Lower size results in lower
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* TCP throughput, larger size results in higher TCP throughput.
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*
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* \hideinitializer
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*/
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#ifndef UIP_CONF_BUFFER_SIZE
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#define UIP_BUFSIZE 400
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#else /* UIP_CONF_BUFFER_SIZE */
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#define UIP_BUFSIZE UIP_CONF_BUFFER_SIZE
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#endif /* UIP_CONF_BUFFER_SIZE */
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/**
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* Determines if statistics support should be compiled in.
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*
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* The statistics is useful for debugging and to show the user.
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*
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* \hideinitializer
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*/
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#ifndef UIP_CONF_STATISTICS
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#define UIP_STATISTICS 0
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#else /* UIP_CONF_STATISTICS */
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#define UIP_STATISTICS UIP_CONF_STATISTICS
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#endif /* UIP_CONF_STATISTICS */
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/**
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* Determines if logging of certain events should be compiled in.
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*
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* This is useful mostly for debugging. The function uip_log()
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* must be implemented to suit the architecture of the project, if
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* logging is turned on.
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*
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* \hideinitializer
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*/
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#ifndef UIP_CONF_LOGGING
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#define UIP_LOGGING 0
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#else /* UIP_CONF_LOGGING */
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#define UIP_LOGGING UIP_CONF_LOGGING
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#endif /* UIP_CONF_LOGGING */
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/**
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* Broadcast support.
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*
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* This flag configures IP broadcast support. This is useful only
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* together with UDP.
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*
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* \hideinitializer
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*
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*/
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#ifndef UIP_CONF_BROADCAST
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#define UIP_BROADCAST 0
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#else /* UIP_CONF_BROADCAST */
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#define UIP_BROADCAST UIP_CONF_BROADCAST
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#endif /* UIP_CONF_BROADCAST */
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/**
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* Print out a uIP log message.
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*
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* This function must be implemented by the module that uses uIP, and
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* is called by uIP whenever a log message is generated.
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*/
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void uip_log(char *msg);
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/**
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* The link level header length.
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*
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* This is the offset into the uip_buf where the IP header can be
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* found. For Ethernet, this should be set to 14. For SLIP, this
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* should be set to 0.
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*
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* \hideinitializer
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*/
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#ifdef UIP_CONF_LLH_LEN
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#define UIP_LLH_LEN UIP_CONF_LLH_LEN
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#else /* UIP_CONF_LLH_LEN */
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#define UIP_LLH_LEN 14
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#endif /* UIP_CONF_LLH_LEN */
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/** @} */
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/*------------------------------------------------------------------------------*/
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/**
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* \name CPU architecture configuration
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* @{
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*
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* The CPU architecture configuration is where the endianess of the
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* CPU on which uIP is to be run is specified. Most CPUs today are
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* little endian, and the most notable exception are the Motorolas
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* which are big endian. The BYTE_ORDER macro should be changed to
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* reflect the CPU architecture on which uIP is to be run.
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*/
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/**
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* The byte order of the CPU architecture on which uIP is to be run.
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*
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* This option can be either BIG_ENDIAN (Motorola byte order) or
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* LITTLE_ENDIAN (Intel byte order).
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*
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* \hideinitializer
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*/
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#ifdef UIP_CONF_BYTE_ORDER
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#define UIP_BYTE_ORDER UIP_CONF_BYTE_ORDER
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#else /* UIP_CONF_BYTE_ORDER */
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#define UIP_BYTE_ORDER UIP_LITTLE_ENDIAN
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#endif /* UIP_CONF_BYTE_ORDER */
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/** @} */
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/*------------------------------------------------------------------------------*/
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/**
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* \name Appication specific configurations
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* @{
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*
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* An uIP application is implemented using a single application
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* function that is called by uIP whenever a TCP/IP event occurs. The
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* name of this function must be registered with uIP at compile time
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* using the UIP_APPCALL definition.
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*
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* uIP applications can store the application state within the
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* uip_conn structure by specifying the type of the application
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* structure by typedef:ing the type uip_tcp_appstate_t and uip_udp_appstate_t.
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*
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* The file containing the definitions must be included in the
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* uipopt.h file.
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*
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* The following example illustrates how this can look.
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\code
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void httpd_appcall(void);
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#define UIP_APPCALL httpd_appcall
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struct httpd_state {
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u8_t state;
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u16_t count;
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char *dataptr;
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char *script;
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};
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typedef struct httpd_state uip_tcp_appstate_t
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\endcode
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*/
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/**
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* \var #define UIP_APPCALL
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*
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* The name of the application function that uIP should call in
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* response to TCP/IP events.
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*
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*/
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/**
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* \var typedef uip_tcp_appstate_t
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*
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* The type of the application state that is to be stored in the
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* uip_conn structure. This usually is typedef:ed to a struct holding
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* application state information.
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*/
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/**
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* \var typedef uip_udp_appstate_t
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*
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* The type of the application state that is to be stored in the
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* uip_conn structure. This usually is typedef:ed to a struct holding
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* application state information.
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*/
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/** @} */
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/** @} */
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#endif /* __UIPOPT_H__ */
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