text: /*
   * 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 NO_SYS                     0
  #define LWIP_SOCKET               (NO_SYS==0)
  #define LWIP_NETCONN              (NO_SYS==0)
  
  #define MEM_ALIGNMENT           4
  #define MEM_SIZE               10240
  
  #define TCP_SND_BUF             2048
  
  /* use os's timeval */
  #define LWIP_TIMEVAL_PRIVATE 0
  
  #define LWIP_DNS    1
  
  #define LWIP_DHCP    1
  
  #define LWIP_ARP 1
  #define DHCP_DOES_ARP_CHECK 1
  
  #include <xbook/schedule.h>
  /* tcpip core thread prio is usr  prio in xbook kernel
  the thread is won't be blocked by func, so it must can't
  rt prio！
   */
  #define TCPIP_THREAD_PRIO TASK_PRIO_USER    
  
  /* 不打开lwip的socket, connect等宏 */
  #define LWIP_COMPAT_SOCKETS 0
  
  /* 使用系统的内存分配 */
  #define MEM_LIBC_MALLOC 1
  
  #define MEMP_NUM_NETCONN 10 //能够同时激活的超时连接数目(NO_SYS==0有戏)
  
  #define LWIP_NETIF_LOOPBACK 1
  #define LWIP_LOOPBACK_MAX_PBUFS 4
  #define LWIP_NETIF_LOOPBACK_MULTITHREADING 1
  #define LWIP_HAVE_LOOPIF 1
  
  #endif /* __LWIPOPTS_H__ */
  