/* * Copyright (c) 2001, Swedish Institute of Computer Science. * All rights reserved.  * * Redistribution and use in source and binary forms, with or without  * modification, are permitted provided that the following conditions  * are met:  * 1. Redistributions of source code must retain the above copyright  *    notice, this list of conditions and the following disclaimer.  * 2. Redistributions in binary form must reproduce the above copyright  *    notice, this list of conditions and the following disclaimer in the  *    documentation and/or other materials provided with the distribution.  * 3. Neither the name of the Institute nor the names of its contributors  *    may be used to endorse or promote products derived from this software  *    without specific prior written permission.  * * THIS SOFTWARE IS PROVIDED BY THE INSTITUTE AND CONTRIBUTORS ``AS IS'' AND  * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE  * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE  * ARE DISCLAIMED.  IN NO EVENT SHALL THE INSTITUTE OR CONTRIBUTORS BE LIABLE  * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL  * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS  * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)  * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT  * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY  * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF  * SUCH DAMAGE.  * * This file is part of the lwIP TCP/IP stack. *  * Author: Adam Dunkels <adam@sics.se> * * $Id: lwipopts.h,v 1.1.1.1 2003/05/17 05:06:57 chenyu Exp $ */#ifndef __LWIPOPTS_H__#define __LWIPOPTS_H__/* ---------- 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. *///yangye 2003-1-27#define MEM_ALIGNMENT           4/* MEM_SIZE: the size of the heap memory. If the application will senda lot of data that needs to be copied, this should be set high. */#define MEM_SIZE                1000/* 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           16/* MEMP_NUM_UDP_PCB: the number of UDP protocol control blocks. One   per active UDP "connection". */#define MEMP_NUM_UDP_PCB        6/* 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    6/* 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         2/* 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      16/* 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. *///yangye 2003-1-22//seems there is something wrong when PBUF_POOL_SIZE = 6 #define PBUF_POOL_SIZE          16/* PBUF_POOL_BUFSIZE: the size of each pbuf in the pbuf pool. */#define PBUF_POOL_BUFSIZE       128/* 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                 128/* TCP sender buffer space (bytes). */#define TCP_SND_BUF             256/* TCP sender buffer space (pbufs). This must be at least = 2 *   TCP_SND_BUF/TCP_MSS for things to work. */#define TCP_SND_QUEUELEN        4 * TCP_SND_BUF/TCP_MSS/* TCP receive window. */#define TCP_WND                 1024/* 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/* ---------- 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/* ---------- 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#define IP_STATS#define ICMP_STATS#define UDP_STATS#define TCP_STATS#define MEM_STATS#define MEMP_STATS#define PBUF_STATS#define SYS_STATS#endif /* STATS */#endif /* __LWIPOPTS_H__ */