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/**

 * \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 Most of the configuration options in the uipopt.h should not

 * be changed, but rather the per-project uip-conf.h file.

 */

/**

 * \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 2 2011-07-17 20:13:17Z filepang@gmail.com $

 *

 */

#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"

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

/**

 * \name 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 appliciable only

 * if uIP should be run over Ethernet.

 *

 * 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

 */

#define UIP_FIXEDADDR    0

/**

 * Ping IP address asignment.

 *

 * 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

/** @} */

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

/**

 * \name 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

/**

 * Turn on support for IP packet reassembly.

 *

 * uIP supports reassembly of fragmented IP packets. This features

 * requires an additonal 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

 */

#define UIP_REASSEMBLY 0

/**

 * The maximum time an IP fragment should wait in the reassembly

 * buffer before it is dropped.

 *

 */

#define UIP_REASS_MAXAGE 40

/** @} */

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

/**

 * \name UDP configuration options

 * @{

 */

/**

 * Toggles wether 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

 */

/** @} */

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

/**

 * \name TCP configuration options

 * @{

 */

/**

 * 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 configration

 * option can be turned off to reduce the code size of uIP.

 *

 * \hideinitializer

 */

#define UIP_ACTIVE_OPEN 1

/**

 * 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 approximatly 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.

 */

#define UIP_TCP_MSS     (UIP_BUFSIZE - UIP_LLH_LEN - UIP_TCPIP_HLEN)

/**

 * The size of the advertised receiver's window.

 *

 * Should be set low (i.e., to the size of the uip_buf buffer) is 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 configiration option has no real implication, and it should be

 * left untouched.

 */

#define UIP_TIME_WAIT_TIMEOUT 120

/** @} */

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

/**

 * \name 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 maxium 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

/** @} */

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

/**

 * \name 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 1500 bytes. Lower size results in lower

 * TCP throughput, larger size results in higher TCP throughput.

 *

 * \hideinitializer

 */

#ifndef UIP_CONF_BUFFER_SIZE

#define UIP_BUFSIZE     1500

#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.

 *

 * \hideinitializer

 */

#ifdef UIP_CONF_LLH_LEN

#define UIP_LLH_LEN UIP_CONF_LLH_LEN

#else /* UIP_CONF_LLH_LEN */

#define UIP_LLH_LEN     14

#endif /* UIP_CONF_LLH_LEN */

/** @} */

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

/**

 * \name 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 BIG_ENDIAN (Motorola byte order) or

 * 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 */

/** @} */

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

/**

 * \name Appication 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__ */