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/*

 * Copyright (c) 2001-2003 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. 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 lwIP TCP/IP stack.

 *

 * Author: Adam Dunkels <adam@sics.se>

 *

 */

#ifndef __LWIPOPTS_H__

#define __LWIPOPTS_H__

#define LWIP_NOASSERT 1 // To suppress some errors for now (no debug output)

#define SYS_LIGHTWEIGHT_PROT            1

#define TCPIP_THREAD_PRIO       3

#define ETH_PAD_SIZE 2

/* ---------- Memory options ---------- */

/* MEM_ALIGNMENT: should be set to the alignment of the CPU for which

   lwIP is compiled. 4 byte alignment -> define MEM_ALIGNMENT to 4, 2

   byte alignment -> define MEM_ALIGNMENT to 2. */

#define MEM_ALIGNMENT           4

/* MEM_SIZE: the size of the heap memory. If the application will send

a lot of data that needs to be copied, this should be set high. */

#define MEM_SIZE                8000

/* MEMP_NUM_PBUF: the number of memp struct pbufs. If the application

   sends a lot of data out of ROM (or other static memory), this

   should be set high. */

#define MEMP_NUM_PBUF           40

/* MEMP_NUM_UDP_PCB: the number of UDP protocol control blocks. One

   per active UDP "connection". */

#define MEMP_NUM_UDP_PCB        4

/* MEMP_NUM_TCP_PCB: the number of simulatenously active TCP

   connections. */

#define MEMP_NUM_TCP_PCB        10

/* MEMP_NUM_TCP_PCB_LISTEN: the number of listening TCP

   connections. */

#define MEMP_NUM_TCP_PCB_LISTEN 8

/* MEMP_NUM_TCP_SEG: the number of simultaneously queued TCP

   segments. */

#define MEMP_NUM_TCP_SEG        8

/* MEMP_NUM_SYS_TIMEOUT: the number of simulateously active

   timeouts. */

#define MEMP_NUM_SYS_TIMEOUT    3

/* The following four are used only with the sequential API and can be

   set to 0 if the application only will use the raw API. */

/* MEMP_NUM_NETBUF: the number of struct netbufs. */

#define MEMP_NUM_NETBUF         4

/* MEMP_NUM_NETCONN: the number of struct netconns. */

#define MEMP_NUM_NETCONN        4

/* MEMP_NUM_APIMSG: the number of struct api_msg, used for

   communication between the TCP/IP stack and the sequential

   programs. */

#define MEMP_NUM_API_MSG        8

/* MEMP_NUM_TCPIPMSG: the number of struct tcpip_msg, which is used

   for sequential API communication and incoming packets. Used in

   src/api/tcpip.c. */

#define MEMP_NUM_TCPIP_MSG      8

/* These two control is reclaimer functions should be compiled

   in. Should always be turned on (1). */

#define MEM_RECLAIM             1

#define MEMP_RECLAIM            1

/* ---------- Pbuf options ---------- */

/* PBUF_POOL_SIZE: the number of buffers in the pbuf pool. */

#define PBUF_POOL_SIZE          8

/* PBUF_POOL_BUFSIZE: the size of each pbuf in the pbuf pool. */

#define PBUF_POOL_BUFSIZE       1500

/* PBUF_LINK_HLEN: the number of bytes that should be allocated for a

   link level header. */

#define PBUF_LINK_HLEN          16

/* ---------- TCP options ---------- */

#define LWIP_TCP                1

#define TCP_TTL                 255

/* Controls if TCP should queue segments that arrive out of

   order. Define to 0 if your device is low on memory. */

#define TCP_QUEUE_OOSEQ         1

/* TCP Maximum segment size. */

#define TCP_MSS                 1500

/* TCP sender buffer space (bytes). */

#define TCP_SND_BUF             1500

/* TCP sender buffer space (pbufs). This must be at least = 2 *

   TCP_SND_BUF/TCP_MSS for things to work. */

#define TCP_SND_QUEUELEN        6 * TCP_SND_BUF/TCP_MSS

/* TCP receive window. */

#define TCP_WND                 1500

/* Maximum number of retransmissions of data segments. */

#define TCP_MAXRTX              12

/* Maximum number of retransmissions of SYN segments. */

#define TCP_SYNMAXRTX           4

/* ---------- ARP options ---------- */

#define ARP_TABLE_SIZE 10

#define ARP_QUEUEING 1

/* ---------- IP options ---------- */

/* Define IP_FORWARD to 1 if you wish to have the ability to forward

   IP packets across network interfaces. If you are going to run lwIP

   on a device with only one network interface, define this to 0. */

#define IP_FORWARD              1

/* If defined to 1, IP options are allowed (but not parsed). If

   defined to 0, all packets with IP options are dropped. */

#define IP_OPTIONS              1

/** IP reassembly and segmentation. Even if they both deal with IP

 *  fragments, note that these are orthogonal, one dealing with incoming

 *  packets, the other with outgoing packets

 */

/** Reassemble incoming fragmented IP packets */

#define IP_REASSEMBLY                   0

/** Fragment outgoing IP packets if their size exceeds MTU */

#define IP_FRAG                         1

/* IP reassemly default age in seconds */

#define IP_REASS_MAXAGE                                                                 30

/* ---------- ICMP options ---------- */

#define ICMP_TTL                255

/* ---------- DHCP options ---------- */

/* Define LWIP_DHCP to 1 if you want DHCP configuration of

   interfaces. DHCP is not implemented in lwIP 0.5.1, however, so

   turning this on does currently not work. */

#define LWIP_DHCP               0

/* 1 if you want to do an ARP check on the offered address

   (recommended). */

#define DHCP_DOES_ARP_CHECK     1

/* ---------- UDP options ---------- */

#define LWIP_UDP                1

#define UDP_TTL                 255

/* ---------- Statistics options ---------- */

#define STATS

#ifdef STATS

#define LINK_STATS 1

#define IP_STATS   1

#define ICMP_STATS 1

#define UDP_STATS  1

#define TCP_STATS  1

#define MEM_STATS  1

#define MEMP_STATS 1

#define PBUF_STATS 1

#define SYS_STATS  1

#endif /* STATS */

#endif /* __LWIPOPTS_H__ */