FreeRTOS/Demo/Common/ethernet/FreeTCPIP/net/uipopt.h - third_party/github/FreeRTOS/FreeRTOS-Kernel - Git at Google

 /**
  * \addtogroup uip
  * @{
  */

 /**
  * \defgroup uipopt Configuration options for uIP
  * @{
  *
  * uIP is configured using the per-project configuration file
  * "uipopt.h". This file contains all compile-time options for uIP and
  * should be tweaked to match each specific project. The uIP
  * distribution contains a documented example "uipopt.h" that can be
  * copied and modified for each project.
  *
  * \note Contiki does not use the uipopt.h file to configure uIP, but
  * uses a per-port uip-conf.h file that should be edited instead.
  */

 /**
  * \file
  * Configuration options for uIP.
  * \author Adam Dunkels <adam@dunkels.com>
  *
  * This file is used for tweaking various configuration options for
  * uIP. You should make a copy of this file into one of your project's
  * directories instead of editing this example "uipopt.h" file that
  * comes with the uIP distribution.
  */

 /*
  * Copyright (c) 2001-2003, Adam Dunkels.
  * 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. The name of the author may not be used to endorse or promote
  *    products derived from this software without specific prior
  *    written permission.
  *
  * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``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 AUTHOR 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 uIP TCP/IP stack.
  *
  * $Id: uipopt.h,v 1.11 2009/04/10 00:37:48 adamdunkels Exp $
  *
  */
 #ifndef __UIPOPT_H__
 #define __UIPOPT_H__

 #ifndef UIP_LITTLE_ENDIAN
 #define UIP_LITTLE_ENDIAN	3412
 #endif /* UIP_LITTLE_ENDIAN */
 #ifndef UIP_BIG_ENDIAN
 #define UIP_BIG_ENDIAN	1234
 #endif /* UIP_BIG_ENDIAN */

 #include "uip-conf.h"
 //_RB_#include "contiki-conf.h"

 /*------------------------------------------------------------------------------*/

 /**
  * \defgroup uipoptstaticconf Static configuration options
  * @{
  *
  * These configuration options can be used for setting the IP address
  * settings statically, but only if UIP_FIXEDADDR is set to 1. The
  * configuration options for a specific node includes IP address,
  * netmask and default router as well as the Ethernet address. The
  * netmask, default router and Ethernet address are applicable only
  * if uIP should be run over Ethernet.
  *
  * This options are meaningful only for the IPv4 code.
  *
  * All of these should be changed to suit your project.
  */

 /**
  * Determines if uIP should use a fixed IP address or not.
  *
  * If uIP should use a fixed IP address, the settings are set in the
  * uipopt.h file. If not, the macros uip_sethostaddr(),
  * uip_setdraddr() and uip_setnetmask() should be used instead.
  *
  * \hideinitializer
  */
 #ifdef UIP_CONF_FIXEDADDR
 #define UIP_FIXED_ADDR UIP_CONF_FIXEDADDR
 #define UIP_FIXEDADDR	1
 #endif

 /**
  * Ping IP address assignment.
  *
  * uIP uses a "ping" packets for setting its own IP address if this
  * option is set. If so, uIP will start with an empty IP address and
  * the destination IP address of the first incoming "ping" (ICMP echo)
  * packet will be used for setting the hosts IP address.
  *
  * \note This works only if UIP_FIXEDADDR is 0.
  *
  * \hideinitializer
  */
 #ifdef UIP_CONF_PINGADDRCONF
 #define UIP_PINGADDRCONF	UIP_CONF_PINGADDRCONF
 #else /* UIP_CONF_PINGADDRCONF */
 #define UIP_PINGADDRCONF	0
 #endif /* UIP_CONF_PINGADDRCONF */

 /**
  * Specifies if the uIP ARP module should be compiled with a fixed
  * Ethernet MAC address or not.
  *
  * If this configuration option is 0, the macro uip_setethaddr() can
  * be used to specify the Ethernet address at run-time.
  *
  * \hideinitializer
  */
 #define UIP_FIXEDETHADDR	0

 /** @} */

 /*------------------------------------------------------------------------------*/

 /**
  * \defgroup uipoptip IP configuration options
  * @{
  *
  */

 /**
  * The IP TTL (time to live) of IP packets sent by uIP.
  *
  * This should normally not be changed.
  */
 #define UIP_TTL 64

 /**
  * The maximum time an IP fragment should wait in the reassembly
  * buffer before it is dropped.
  *
  */
 #define UIP_REASS_MAXAGE	60	/*60s*/

 /**
  * Turn on support for IP packet reassembly.
  *
  * uIP supports reassembly of fragmented IP packets. This features
  * requires an additional amount of RAM to hold the reassembly buffer
  * and the reassembly code size is approximately 700 bytes.  The
  * reassembly buffer is of the same size as the uip_buf buffer
  * (configured by UIP_BUFSIZE).
  *
  * \note IP packet reassembly is not heavily tested.
  *
  * \hideinitializer
  */
 #ifdef UIP_CONF_REASSEMBLY
 #define UIP_REASSEMBLY	UIP_CONF_REASSEMBLY
 #else /* UIP_CONF_REASSEMBLY */
 #define UIP_REASSEMBLY	0
 #endif /* UIP_CONF_REASSEMBLY */

 /** @} */

 /*------------------------------------------------------------------------------*/

 /**
  * \defgroup uipoptipv6 IPv6 configuration options
  * @{
  *
  */

 /** The maximum transmission unit at the IP Layer*/
 #define UIP_LINK_MTU	1280

 #ifndef UIP_CONF_IPV6

 /** Do we use IPv6 or not (default: no) */
 #define UIP_CONF_IPV6	0
 #endif
 #ifndef UIP_CONF_IPV6_QUEUE_PKT

 /** Do we do per %neighbor queuing during address resolution (default: no) */
 #define UIP_CONF_IPV6_QUEUE_PKT 0
 #endif
 #ifndef UIP_CONF_IPV6_CHECKS

 /** Do we do IPv6 consistency checks (highly recommended, default: yes) */
 #define UIP_CONF_IPV6_CHECKS	1
 #endif
 #ifndef UIP_CONF_IPV6_REASSEMBLY

 /** Do we do IPv6 fragmentation (default: no) */
 #define UIP_CONF_IPV6_REASSEMBLY	0
 #endif
 #ifndef UIP_CONF_NETIF_MAX_ADDRESSES

 /** Default number of IPv6 addresses associated to the node's interface */
 #define UIP_CONF_NETIF_MAX_ADDRESSES	3
 #endif
 #ifndef UIP_CONF_ND6_MAX_PREFIXES

 /** Default number of IPv6 prefixes associated to the node's interface */
 #define UIP_CONF_ND6_MAX_PREFIXES	3
 #endif
 #ifndef UIP_CONF_ND6_MAX_NEIGHBORS

 /** Default number of neighbors that can be stored in the %neighbor cache */
 #define UIP_CONF_ND6_MAX_NEIGHBORS	4
 #endif
 #ifndef UIP_CONF_ND6_MAX_DEFROUTERS

 /** Minimum number of default routers */
 #define UIP_CONF_ND6_MAX_DEFROUTERS 2
 #endif

 /** @} */

 /*------------------------------------------------------------------------------*/

 /**
  * \defgroup uipoptudp UDP configuration options
  * @{
  *
  * \note The UDP support in uIP is still not entirely complete; there
  * is no support for sending or receiving broadcast or multicast
  * packets, but it works well enough to support a number of vital
  * applications such as DNS queries, though
  */

 /**
  * Toggles whether UDP support should be compiled in or not.
  *
  * \hideinitializer
  */
 #ifdef UIP_CONF_UDP
 #define UIP_UDP UIP_CONF_UDP
 #else /* UIP_CONF_UDP */
 #define UIP_UDP 0
 #endif /* UIP_CONF_UDP */

 /**
  * Toggles if UDP checksums should be used or not.
  *
  * \note Support for UDP checksums is currently not included in uIP,
  * so this option has no function.
  *
  * \hideinitializer
  */
 #ifdef UIP_CONF_UDP_CHECKSUMS
 #define UIP_UDP_CHECKSUMS	UIP_CONF_UDP_CHECKSUMS
 #else
 #define UIP_UDP_CHECKSUMS	0
 #endif

 /**
  * The maximum amount of concurrent UDP connections.
  *
  * \hideinitializer
  */
 #ifdef UIP_CONF_UDP_CONNS
 #define UIP_UDP_CONNS	UIP_CONF_UDP_CONNS
 #else /* UIP_CONF_UDP_CONNS */
 #define UIP_UDP_CONNS	10
 #endif /* UIP_CONF_UDP_CONNS */

 /**
  * The name of the function that should be called when UDP datagrams arrive.
  *
  * \hideinitializer
  */

 /** @} */

 /*------------------------------------------------------------------------------*/

 /**
  * \defgroup uipopttcp TCP configuration options
  * @{
  */

 /**
  * Toggles whether UDP support should be compiled in or not.
  *
  * \hideinitializer
  */
 #ifdef UIP_CONF_TCP
 #define UIP_TCP UIP_CONF_TCP
 #else /* UIP_CONF_UDP */
 #define UIP_TCP 1
 #endif /* UIP_CONF_UDP */

 /**
  * 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.
  *
  * \hideinitializer
  */
 #ifndef UIP_CONF_ACTIVE_OPEN
 #define UIP_ACTIVE_OPEN 1
 #else /* UIP_CONF_ACTIVE_OPEN */
 #define UIP_ACTIVE_OPEN UIP_CONF_ACTIVE_OPEN
 #endif /* UIP_CONF_ACTIVE_OPEN */

 /**
  * 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.
  *
  * \hideinitializer
  */
 #ifndef UIP_CONF_MAX_CONNECTIONS
 #define UIP_CONNS	10
 #else /* UIP_CONF_MAX_CONNECTIONS */
 #define UIP_CONNS	UIP_CONF_MAX_CONNECTIONS
 #endif /* UIP_CONF_MAX_CONNECTIONS */

 /**
  * The maximum number of simultaneously listening TCP ports.
  *
  * Each listening TCP port requires 2 bytes of memory.
  *
  * \hideinitializer
  */
 #ifndef UIP_CONF_MAX_LISTENPORTS
 #define UIP_LISTENPORTS 20
 #else /* UIP_CONF_MAX_LISTENPORTS */
 #define UIP_LISTENPORTS UIP_CONF_MAX_LISTENPORTS
 #endif /* UIP_CONF_MAX_LISTENPORTS */

 /**
  * 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.
  *
  * \hideinitializer
  */
 #define UIP_URGDATA 0

 /**
  * The initial retransmission timeout counted in timer pulses.
  *
  * This should not be changed.
  */
 #define UIP_RTO 3

 /**
  * The maximum number of times a segment should be retransmitted
  * before the connection should be aborted.
  *
  * This should not be changed.
  */
 #define UIP_MAXRTX	8

 /**
  * 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.
  */
 #define UIP_MAXSYNRTX	5

 /**
  * The TCP maximum segment size.
  *
  * This is should not be to set to more than
  * UIP_BUFSIZE - UIP_LLH_LEN - UIP_TCPIP_HLEN.
  */
 #ifdef UIP_CONF_TCP_MSS
 #define UIP_TCP_MSS UIP_CONF_TCP_MSS
 #else
 #define UIP_TCP_MSS ( UIP_BUFSIZE - UIP_LLH_LEN - UIP_TCPIP_HLEN )
 #endif

 /**
  * 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.
  *
  * \hideinitializer
  */
 #ifndef UIP_CONF_RECEIVE_WINDOW
 #define UIP_RECEIVE_WINDOW	UIP_TCP_MSS
 #else
 #define UIP_RECEIVE_WINDOW	UIP_CONF_RECEIVE_WINDOW
 #endif

 /**
  * How long a connection should stay in the TIME_WAIT state.
  *
  * This configuration option has no real implication, and it should be
  * left untouched.
  */
 #define UIP_TIME_WAIT_TIMEOUT	120

 /** @} */

 /*------------------------------------------------------------------------------*/

 /**
  * \defgroup uipoptarp ARP configuration options
  * @{
  */

 /**
  * The size of the ARP table.
  *
  * This option should be set to a larger value if this uIP node will
  * have many connections from the local network.
  *
  * \hideinitializer
  */
 #ifdef UIP_CONF_ARPTAB_SIZE
 #define UIP_ARPTAB_SIZE UIP_CONF_ARPTAB_SIZE
 #else
 #define UIP_ARPTAB_SIZE 8
 #endif

 /**
  * The maximum age of ARP table entries measured in 10ths of seconds.
  *
  * An UIP_ARP_MAXAGE of 120 corresponds to 20 minutes (BSD
  * default).
  */
 #define UIP_ARP_MAXAGE	120

 /** @} */

 /*------------------------------------------------------------------------------*/

 /**
  * \defgroup uipoptmac layer 2 options (for ipv6)
  * @{
  */
 #define UIP_DEFAULT_PREFIX_LEN	64

 /** @} */

 /*------------------------------------------------------------------------------*/

 /**
  * \defgroup uipoptsics 6lowpan options (for ipv6)
  * @{
  */

 /**
  * Timeout for packet reassembly at the 6lowpan layer
  * (should be < 60s)
  */
 #ifdef SICSLOWPAN_CONF_MAXAGE
 #define SICSLOWPAN_REASS_MAXAGE SICSLOWPAN_CONF_MAXAGE
 #else
 #define SICSLOWPAN_REASS_MAXAGE 20
 #endif

 /**
  * Do we compress the IP header or not (default: no)
  */
 #ifndef SICSLOWPAN_CONF_COMPRESSION
 #define SICSLOWPAN_CONF_COMPRESSION 0
 #endif

 /**
  * If we use IPHC compression, how many address contexts do we support
  */
 #ifndef SICSLOWPAN_CONF_MAX_ADDR_CONTEXTS
 #define SICSLOWPAN_CONF_MAX_ADDR_CONTEXTS	1
 #endif

 /**
  * Do we support 6lowpan fragmentation
  */
 #ifndef SICSLOWPAN_CONF_FRAG
 #define SICSLOWPAN_CONF_FRAG	0
 #endif

 /** @} */

 /*------------------------------------------------------------------------------*/

 /**
  * \defgroup uipoptgeneral General configuration options
  * @{
  */

 /**
  * The size of the uIP packet buffer.
  *
  * The uIP packet buffer should not be smaller than 60 bytes, and does
  * not need to be larger than 1514 bytes. Lower size results in lower
  * TCP throughput, larger size results in higher TCP throughput.
  *
  * \hideinitializer
  */
 #ifndef UIP_CONF_BUFFER_SIZE
 #define UIP_BUFSIZE UIP_LINK_MTU + UIP_LLH_LEN
 #else /* UIP_CONF_BUFFER_SIZE */
 #define UIP_BUFSIZE UIP_CONF_BUFFER_SIZE
 #endif /* UIP_CONF_BUFFER_SIZE */

 /**
  * Determines if statistics support should be compiled in.
  *
  * The statistics is useful for debugging and to show the user.
  *
  * \hideinitializer
  */
 #ifndef UIP_CONF_STATISTICS
 #define UIP_STATISTICS	0
 #else /* UIP_CONF_STATISTICS */
 #define UIP_STATISTICS	UIP_CONF_STATISTICS
 #endif /* UIP_CONF_STATISTICS */

 /**
  * Determines if logging of certain events should be compiled in.
  *
  * This is useful mostly for debugging. The function uip_log()
  * must be implemented to suit the architecture of the project, if
  * logging is turned on.
  *
  * \hideinitializer
  */
 #ifndef UIP_CONF_LOGGING
 #define UIP_LOGGING 0
 #else /* UIP_CONF_LOGGING */
 #define UIP_LOGGING UIP_CONF_LOGGING
 #endif /* UIP_CONF_LOGGING */

 /**
  * Broadcast support.
  *
  * This flag configures IP broadcast support. This is useful only
  * together with UDP.
  *
  * \hideinitializer
  *
  */
 #ifndef UIP_CONF_BROADCAST
 #define UIP_BROADCAST	0
 #else /* UIP_CONF_BROADCAST */
 #define UIP_BROADCAST	UIP_CONF_BROADCAST
 #endif /* UIP_CONF_BROADCAST */

 /**
  * Print out a uIP log message.
  *
  * This function must be implemented by the module that uses uIP, and
  * is called by uIP whenever a log message is generated.
  */
 void	uip_log( char *msg );

 /**
  * The link level header length.
  *
  * This is the offset into the uip_buf where the IP header can be
  * found. For Ethernet, this should be set to 14. For SLIP, this
  * should be set to 0.
  *
  * \note we probably won't use this constant for other link layers than
  * ethernet as they have variable header length (this is due to variable
  * number and type of address fields and to optional security features)
  * E.g.: 802.15.4 -> 2 + (1/2*4/8) + 0/5/6/10/14
  *       802.11 -> 4 + (6*3/4) + 2
  * \hideinitializer
  */
 #ifdef UIP_CONF_LLH_LEN
 #define UIP_LLH_LEN UIP_CONF_LLH_LEN
 #else /* UIP_LLH_LEN */
 #define UIP_LLH_LEN 14
 #endif /* UIP_CONF_LLH_LEN */

 /** @} */

 /*------------------------------------------------------------------------------*/

 /**
  * \defgroup uipoptcpu CPU architecture configuration
  * @{
  *
  * The CPU architecture configuration is where the endianess of the
  * CPU on which uIP is to be run is specified. Most CPUs today are
  * little endian, and the most notable exception are the Motorolas
  * which are big endian. The BYTE_ORDER macro should be changed to
  * reflect the CPU architecture on which uIP is to be run.
  */

 /**
  * The byte order of the CPU architecture on which uIP is to be run.
  *
  * This option can be either UIP_BIG_ENDIAN (Motorola byte order) or
  * UIP_LITTLE_ENDIAN (Intel byte order).
  *
  * \hideinitializer
  */
 #ifdef UIP_CONF_BYTE_ORDER
 #define UIP_BYTE_ORDER	UIP_CONF_BYTE_ORDER
 #else /* UIP_CONF_BYTE_ORDER */
 #define UIP_BYTE_ORDER	UIP_LITTLE_ENDIAN
 #endif /* UIP_CONF_BYTE_ORDER */

 /** @} */

 /*------------------------------------------------------------------------------*/

 /**
  * \defgroup uipoptapp Application specific configurations
  * @{
  *
  * An uIP application is implemented using a single application
  * function that is called by uIP whenever a TCP/IP event occurs. The
  * name of this function must be registered with uIP at compile time
  * using the UIP_APPCALL definition.
  *
  * uIP applications can store the application state within the
  * uip_conn structure by specifying the type of the application
  * structure by typedef:ing the type uip_tcp_appstate_t and uip_udp_appstate_t.
  *
  * The file containing the definitions must be included in the
  * uipopt.h file.
  *
  * The following example illustrates how this can look.
  \code

  void httpd_appcall(void);
  #define UIP_APPCALL     httpd_appcall

  struct httpd_state {
  u8_t state;
  u16_t count;
  char *dataptr;
  char *script;
  };
  typedef struct httpd_state uip_tcp_appstate_t
  \endcode
 */

 /**
  * \var #define UIP_APPCALL
  *
  * The name of the application function that uIP should call in
  * response to TCP/IP events.
  *
  */

 /**
  * \var typedef uip_tcp_appstate_t
  *
  * The type of the application state that is to be stored in the
  * uip_conn structure. This usually is typedef:ed to a struct holding
  * application state information.
  */

 /**
  * \var typedef uip_udp_appstate_t
  *
  * The type of the application state that is to be stored in the
  * uip_conn structure. This usually is typedef:ed to a struct holding
  * application state information.
  */

 /** @} */
 #endif /* __UIPOPT_H__ */

 /** @} */

 /** @} */
	/**
	* \addtogroup uip
	* @{
	*/

	/**
	* \defgroup uipopt Configuration options for uIP
	* @{
	*
	* uIP is configured using the per-project configuration file
	* "uipopt.h". This file contains all compile-time options for uIP and
	* should be tweaked to match each specific project. The uIP
	* distribution contains a documented example "uipopt.h" that can be
	* copied and modified for each project.
	*
	* \note Contiki does not use the uipopt.h file to configure uIP, but
	* uses a per-port uip-conf.h file that should be edited instead.
	*/

	/**
	* \file
	* Configuration options for uIP.
	* \author Adam Dunkels <adam@dunkels.com>
	*
	* This file is used for tweaking various configuration options for
	* uIP. You should make a copy of this file into one of your project's
	* directories instead of editing this example "uipopt.h" file that
	* comes with the uIP distribution.
	*/

	/*
	* Copyright (c) 2001-2003, Adam Dunkels.
	* 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. The name of the author may not be used to endorse or promote
	* products derived from this software without specific prior
	* written permission.
	*
	* THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``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 AUTHOR 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 uIP TCP/IP stack.
	*
	* $Id: uipopt.h,v 1.11 2009/04/10 00:37:48 adamdunkels Exp $
	*
	*/
	#ifndef __UIPOPT_H__
	#define __UIPOPT_H__

	#ifndef UIP_LITTLE_ENDIAN
	#define UIP_LITTLE_ENDIAN 3412
	#endif /* UIP_LITTLE_ENDIAN */
	#ifndef UIP_BIG_ENDIAN
	#define UIP_BIG_ENDIAN 1234
	#endif /* UIP_BIG_ENDIAN */

	#include "uip-conf.h"
	//_RB_#include "contiki-conf.h"

	/------------------------------------------------------------------------------/

	/**
	* \defgroup uipoptstaticconf Static configuration options
	* @{
	*
	* These configuration options can be used for setting the IP address
	* settings statically, but only if UIP_FIXEDADDR is set to 1. The
	* configuration options for a specific node includes IP address,
	* netmask and default router as well as the Ethernet address. The
	* netmask, default router and Ethernet address are applicable only
	* if uIP should be run over Ethernet.
	*
	* This options are meaningful only for the IPv4 code.
	*
	* All of these should be changed to suit your project.
	*/

	/**
	* Determines if uIP should use a fixed IP address or not.
	*
	* If uIP should use a fixed IP address, the settings are set in the
	* uipopt.h file. If not, the macros uip_sethostaddr(),
	* uip_setdraddr() and uip_setnetmask() should be used instead.
	*
	* \hideinitializer
	*/
	#ifdef UIP_CONF_FIXEDADDR
	#define UIP_FIXED_ADDR UIP_CONF_FIXEDADDR
	#define UIP_FIXEDADDR 1
	#endif

	/**
	* Ping IP address assignment.
	*
	* uIP uses a "ping" packets for setting its own IP address if this
	* option is set. If so, uIP will start with an empty IP address and
	* the destination IP address of the first incoming "ping" (ICMP echo)
	* packet will be used for setting the hosts IP address.
	*
	* \note This works only if UIP_FIXEDADDR is 0.
	*
	* \hideinitializer
	*/
	#ifdef UIP_CONF_PINGADDRCONF
	#define UIP_PINGADDRCONF UIP_CONF_PINGADDRCONF
	#else /* UIP_CONF_PINGADDRCONF */
	#define UIP_PINGADDRCONF 0
	#endif /* UIP_CONF_PINGADDRCONF */

	/**
	* Specifies if the uIP ARP module should be compiled with a fixed
	* Ethernet MAC address or not.
	*
	* If this configuration option is 0, the macro uip_setethaddr() can
	* be used to specify the Ethernet address at run-time.
	*
	* \hideinitializer
	*/
	#define UIP_FIXEDETHADDR 0

	/** @} */

	/------------------------------------------------------------------------------/

	/**
	* \defgroup uipoptip IP configuration options
	* @{
	*
	*/

	/**
	* The IP TTL (time to live) of IP packets sent by uIP.
	*
	* This should normally not be changed.
	*/
	#define UIP_TTL 64

	/**
	* The maximum time an IP fragment should wait in the reassembly
	* buffer before it is dropped.
	*
	*/
	#define UIP_REASS_MAXAGE 60 /60s/

	/**
	* Turn on support for IP packet reassembly.
	*
	* uIP supports reassembly of fragmented IP packets. This features
	* requires an additional amount of RAM to hold the reassembly buffer
	* and the reassembly code size is approximately 700 bytes. The
	* reassembly buffer is of the same size as the uip_buf buffer
	* (configured by UIP_BUFSIZE).
	*
	* \note IP packet reassembly is not heavily tested.
	*
	* \hideinitializer
	*/
	#ifdef UIP_CONF_REASSEMBLY
	#define UIP_REASSEMBLY UIP_CONF_REASSEMBLY
	#else /* UIP_CONF_REASSEMBLY */
	#define UIP_REASSEMBLY 0
	#endif /* UIP_CONF_REASSEMBLY */

	/** @} */

	/------------------------------------------------------------------------------/

	/**
	* \defgroup uipoptipv6 IPv6 configuration options
	* @{
	*
	*/

	/** The maximum transmission unit at the IP Layer*/
	#define UIP_LINK_MTU 1280

	#ifndef UIP_CONF_IPV6

	/** Do we use IPv6 or not (default: no) */
	#define UIP_CONF_IPV6 0
	#endif
	#ifndef UIP_CONF_IPV6_QUEUE_PKT

	/** Do we do per %neighbor queuing during address resolution (default: no) */
	#define UIP_CONF_IPV6_QUEUE_PKT 0
	#endif
	#ifndef UIP_CONF_IPV6_CHECKS

	/** Do we do IPv6 consistency checks (highly recommended, default: yes) */
	#define UIP_CONF_IPV6_CHECKS 1
	#endif
	#ifndef UIP_CONF_IPV6_REASSEMBLY

	/** Do we do IPv6 fragmentation (default: no) */
	#define UIP_CONF_IPV6_REASSEMBLY 0
	#endif
	#ifndef UIP_CONF_NETIF_MAX_ADDRESSES

	/** Default number of IPv6 addresses associated to the node's interface */
	#define UIP_CONF_NETIF_MAX_ADDRESSES 3
	#endif
	#ifndef UIP_CONF_ND6_MAX_PREFIXES

	/** Default number of IPv6 prefixes associated to the node's interface */
	#define UIP_CONF_ND6_MAX_PREFIXES 3
	#endif
	#ifndef UIP_CONF_ND6_MAX_NEIGHBORS

	/** Default number of neighbors that can be stored in the %neighbor cache */
	#define UIP_CONF_ND6_MAX_NEIGHBORS 4
	#endif
	#ifndef UIP_CONF_ND6_MAX_DEFROUTERS

	/** Minimum number of default routers */
	#define UIP_CONF_ND6_MAX_DEFROUTERS 2
	#endif

	/** @} */

	/------------------------------------------------------------------------------/

	/**
	* \defgroup uipoptudp UDP configuration options
	* @{
	*
	* \note The UDP support in uIP is still not entirely complete; there
	* is no support for sending or receiving broadcast or multicast
	* packets, but it works well enough to support a number of vital
	* applications such as DNS queries, though
	*/

	/**
	* Toggles whether UDP support should be compiled in or not.
	*
	* \hideinitializer
	*/
	#ifdef UIP_CONF_UDP
	#define UIP_UDP UIP_CONF_UDP
	#else /* UIP_CONF_UDP */
	#define UIP_UDP 0
	#endif /* UIP_CONF_UDP */

	/**
	* Toggles if UDP checksums should be used or not.
	*
	* \note Support for UDP checksums is currently not included in uIP,
	* so this option has no function.
	*
	* \hideinitializer
	*/
	#ifdef UIP_CONF_UDP_CHECKSUMS
	#define UIP_UDP_CHECKSUMS UIP_CONF_UDP_CHECKSUMS
	#else
	#define UIP_UDP_CHECKSUMS 0
	#endif

	/**
	* The maximum amount of concurrent UDP connections.
	*
	* \hideinitializer
	*/
	#ifdef UIP_CONF_UDP_CONNS
	#define UIP_UDP_CONNS UIP_CONF_UDP_CONNS
	#else /* UIP_CONF_UDP_CONNS */
	#define UIP_UDP_CONNS 10
	#endif /* UIP_CONF_UDP_CONNS */

	/**
	* The name of the function that should be called when UDP datagrams arrive.
	*
	* \hideinitializer
	*/

	/** @} */

	/------------------------------------------------------------------------------/

	/**
	* \defgroup uipopttcp TCP configuration options
	* @{
	*/

	/**
	* Toggles whether UDP support should be compiled in or not.
	*
	* \hideinitializer
	*/
	#ifdef UIP_CONF_TCP
	#define UIP_TCP UIP_CONF_TCP
	#else /* UIP_CONF_UDP */
	#define UIP_TCP 1
	#endif /* UIP_CONF_UDP */

	/**
	* 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.
	*
	* \hideinitializer
	*/
	#ifndef UIP_CONF_ACTIVE_OPEN
	#define UIP_ACTIVE_OPEN 1
	#else /* UIP_CONF_ACTIVE_OPEN */
	#define UIP_ACTIVE_OPEN UIP_CONF_ACTIVE_OPEN
	#endif /* UIP_CONF_ACTIVE_OPEN */

	/**
	* 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.
	*
	* \hideinitializer
	*/
	#ifndef UIP_CONF_MAX_CONNECTIONS
	#define UIP_CONNS 10
	#else /* UIP_CONF_MAX_CONNECTIONS */
	#define UIP_CONNS UIP_CONF_MAX_CONNECTIONS
	#endif /* UIP_CONF_MAX_CONNECTIONS */

	/**
	* The maximum number of simultaneously listening TCP ports.
	*
	* Each listening TCP port requires 2 bytes of memory.
	*
	* \hideinitializer
	*/
	#ifndef UIP_CONF_MAX_LISTENPORTS
	#define UIP_LISTENPORTS 20
	#else /* UIP_CONF_MAX_LISTENPORTS */
	#define UIP_LISTENPORTS UIP_CONF_MAX_LISTENPORTS
	#endif /* UIP_CONF_MAX_LISTENPORTS */

	/**
	* 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.
	*
	* \hideinitializer
	*/
	#define UIP_URGDATA 0

	/**
	* The initial retransmission timeout counted in timer pulses.
	*
	* This should not be changed.
	*/
	#define UIP_RTO 3

	/**
	* The maximum number of times a segment should be retransmitted
	* before the connection should be aborted.
	*
	* This should not be changed.
	*/
	#define UIP_MAXRTX 8

	/**
	* 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.
	*/
	#define UIP_MAXSYNRTX 5

	/**
	* The TCP maximum segment size.
	*
	* This is should not be to set to more than
	* UIP_BUFSIZE - UIP_LLH_LEN - UIP_TCPIP_HLEN.
	*/
	#ifdef UIP_CONF_TCP_MSS
	#define UIP_TCP_MSS UIP_CONF_TCP_MSS
	#else
	#define UIP_TCP_MSS ( UIP_BUFSIZE - UIP_LLH_LEN - UIP_TCPIP_HLEN )
	#endif

	/**
	* 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.
	*
	* \hideinitializer
	*/
	#ifndef UIP_CONF_RECEIVE_WINDOW
	#define UIP_RECEIVE_WINDOW UIP_TCP_MSS
	#else
	#define UIP_RECEIVE_WINDOW UIP_CONF_RECEIVE_WINDOW
	#endif

	/**
	* How long a connection should stay in the TIME_WAIT state.
	*
	* This configuration option has no real implication, and it should be
	* left untouched.
	*/
	#define UIP_TIME_WAIT_TIMEOUT 120

	/** @} */

	/------------------------------------------------------------------------------/

	/**
	* \defgroup uipoptarp ARP configuration options
	* @{
	*/

	/**
	* The size of the ARP table.
	*
	* This option should be set to a larger value if this uIP node will
	* have many connections from the local network.
	*
	* \hideinitializer
	*/
	#ifdef UIP_CONF_ARPTAB_SIZE
	#define UIP_ARPTAB_SIZE UIP_CONF_ARPTAB_SIZE
	#else
	#define UIP_ARPTAB_SIZE 8
	#endif

	/**
	* The maximum age of ARP table entries measured in 10ths of seconds.
	*
	* An UIP_ARP_MAXAGE of 120 corresponds to 20 minutes (BSD
	* default).
	*/
	#define UIP_ARP_MAXAGE 120

	/** @} */

	/------------------------------------------------------------------------------/

	/**
	* \defgroup uipoptmac layer 2 options (for ipv6)
	* @{
	*/
	#define UIP_DEFAULT_PREFIX_LEN 64

	/** @} */

	/------------------------------------------------------------------------------/

	/**
	* \defgroup uipoptsics 6lowpan options (for ipv6)
	* @{
	*/

	/**
	* Timeout for packet reassembly at the 6lowpan layer
	* (should be < 60s)
	*/
	#ifdef SICSLOWPAN_CONF_MAXAGE
	#define SICSLOWPAN_REASS_MAXAGE SICSLOWPAN_CONF_MAXAGE
	#else
	#define SICSLOWPAN_REASS_MAXAGE 20
	#endif

	/**
	* Do we compress the IP header or not (default: no)
	*/
	#ifndef SICSLOWPAN_CONF_COMPRESSION
	#define SICSLOWPAN_CONF_COMPRESSION 0
	#endif

	/**
	* If we use IPHC compression, how many address contexts do we support
	*/
	#ifndef SICSLOWPAN_CONF_MAX_ADDR_CONTEXTS
	#define SICSLOWPAN_CONF_MAX_ADDR_CONTEXTS 1
	#endif

	/**
	* Do we support 6lowpan fragmentation
	*/
	#ifndef SICSLOWPAN_CONF_FRAG
	#define SICSLOWPAN_CONF_FRAG 0
	#endif

	/** @} */

	/------------------------------------------------------------------------------/

	/**
	* \defgroup uipoptgeneral General configuration options
	* @{
	*/

	/**
	* The size of the uIP packet buffer.
	*
	* The uIP packet buffer should not be smaller than 60 bytes, and does
	* not need to be larger than 1514 bytes. Lower size results in lower
	* TCP throughput, larger size results in higher TCP throughput.
	*
	* \hideinitializer
	*/
	#ifndef UIP_CONF_BUFFER_SIZE
	#define UIP_BUFSIZE UIP_LINK_MTU + UIP_LLH_LEN
	#else /* UIP_CONF_BUFFER_SIZE */
	#define UIP_BUFSIZE UIP_CONF_BUFFER_SIZE
	#endif /* UIP_CONF_BUFFER_SIZE */

	/**
	* Determines if statistics support should be compiled in.
	*
	* The statistics is useful for debugging and to show the user.
	*
	* \hideinitializer
	*/
	#ifndef UIP_CONF_STATISTICS
	#define UIP_STATISTICS 0
	#else /* UIP_CONF_STATISTICS */
	#define UIP_STATISTICS UIP_CONF_STATISTICS
	#endif /* UIP_CONF_STATISTICS */

	/**
	* Determines if logging of certain events should be compiled in.
	*
	* This is useful mostly for debugging. The function uip_log()
	* must be implemented to suit the architecture of the project, if
	* logging is turned on.
	*
	* \hideinitializer
	*/
	#ifndef UIP_CONF_LOGGING
	#define UIP_LOGGING 0
	#else /* UIP_CONF_LOGGING */
	#define UIP_LOGGING UIP_CONF_LOGGING
	#endif /* UIP_CONF_LOGGING */

	/**
	* Broadcast support.
	*
	* This flag configures IP broadcast support. This is useful only
	* together with UDP.
	*
	* \hideinitializer
	*
	*/
	#ifndef UIP_CONF_BROADCAST
	#define UIP_BROADCAST 0
	#else /* UIP_CONF_BROADCAST */
	#define UIP_BROADCAST UIP_CONF_BROADCAST
	#endif /* UIP_CONF_BROADCAST */

	/**
	* Print out a uIP log message.
	*
	* This function must be implemented by the module that uses uIP, and
	* is called by uIP whenever a log message is generated.
	*/
	void uip_log( char *msg );

	/**
	* The link level header length.
	*
	* This is the offset into the uip_buf where the IP header can be
	* found. For Ethernet, this should be set to 14. For SLIP, this
	* should be set to 0.
	*
	* \note we probably won't use this constant for other link layers than
	* ethernet as they have variable header length (this is due to variable
	* number and type of address fields and to optional security features)
	* E.g.: 802.15.4 -> 2 + (1/2*4/8) + 0/5/6/10/14
	* 802.11 -> 4 + (6*3/4) + 2
	* \hideinitializer
	*/
	#ifdef UIP_CONF_LLH_LEN
	#define UIP_LLH_LEN UIP_CONF_LLH_LEN
	#else /* UIP_LLH_LEN */
	#define UIP_LLH_LEN 14
	#endif /* UIP_CONF_LLH_LEN */

	/** @} */

	/------------------------------------------------------------------------------/

	/**
	* \defgroup uipoptcpu CPU architecture configuration
	* @{
	*
	* The CPU architecture configuration is where the endianess of the
	* CPU on which uIP is to be run is specified. Most CPUs today are
	* little endian, and the most notable exception are the Motorolas
	* which are big endian. The BYTE_ORDER macro should be changed to
	* reflect the CPU architecture on which uIP is to be run.
	*/

	/**
	* The byte order of the CPU architecture on which uIP is to be run.
	*
	* This option can be either UIP_BIG_ENDIAN (Motorola byte order) or
	* UIP_LITTLE_ENDIAN (Intel byte order).
	*
	* \hideinitializer
	*/
	#ifdef UIP_CONF_BYTE_ORDER
	#define UIP_BYTE_ORDER UIP_CONF_BYTE_ORDER
	#else /* UIP_CONF_BYTE_ORDER */
	#define UIP_BYTE_ORDER UIP_LITTLE_ENDIAN
	#endif /* UIP_CONF_BYTE_ORDER */

	/** @} */

	/------------------------------------------------------------------------------/

	/**
	* \defgroup uipoptapp Application specific configurations
	* @{
	*
	* An uIP application is implemented using a single application
	* function that is called by uIP whenever a TCP/IP event occurs. The
	* name of this function must be registered with uIP at compile time
	* using the UIP_APPCALL definition.
	*
	* uIP applications can store the application state within the
	* uip_conn structure by specifying the type of the application
	* structure by typedef:ing the type uip_tcp_appstate_t and uip_udp_appstate_t.
	*
	* The file containing the definitions must be included in the
	* uipopt.h file.
	*
	* The following example illustrates how this can look.
	\code

	void httpd_appcall(void);
	#define UIP_APPCALL httpd_appcall

	struct httpd_state {
	u8_t state;
	u16_t count;
	char *dataptr;
	char *script;
	};
	typedef struct httpd_state uip_tcp_appstate_t
	\endcode
	*/

	/**
	* \var #define UIP_APPCALL
	*
	* The name of the application function that uIP should call in
	* response to TCP/IP events.
	*
	*/

	/**
	* \var typedef uip_tcp_appstate_t
	*
	* The type of the application state that is to be stored in the
	* uip_conn structure. This usually is typedef:ed to a struct holding
	* application state information.
	*/

	/**
	* \var typedef uip_udp_appstate_t
	*
	* The type of the application state that is to be stored in the
	* uip_conn structure. This usually is typedef:ed to a struct holding
	* application state information.
	*/

	/** @} */
	#endif /* __UIPOPT_H__ */

	/** @} */

	/** @} */