www.pudn.com > ucosii4skyeye184.rar > tcpip.c, change:2003-05-17,size:4423b


/* 
 * 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: tcpip.c,v 1.1.1.1 2003/05/17 05:06:56 chenyu Exp $ 
 */ 
 
#include "lwip/debug.h" 
 
#include "lwip/opt.h" 
 
#include "lwip/sys.h" 
 
#include "lwip/memp.h" 
#include "lwip/pbuf.h" 
 
#include "lwip/ip.h" 
#include "lwip/udp.h" 
#include "lwip/tcp.h" 
 
#include "lwip/tcpip.h" 
 
static void (* tcpip_init_done)(void *arg) = NULL; 
static void *tcpip_init_done_arg; 
static sys_mbox_t mbox; 
 
/*-----------------------------------------------------------------------------------*/ 
static void 
tcpip_tcp_timer(void *arg) 
{ 
  tcp_tmr(); 
  sys_timeout(TCP_TMR_INTERVAL, (sys_timeout_handler)tcpip_tcp_timer, NULL); 
} 
/*-----------------------------------------------------------------------------------*/ 
 
static void 
tcpip_thread(void *arg) 
{ 
  struct tcpip_msg *msg; 
 
  ip_init(); 
  udp_init(); 
  tcp_init(); 
 
  sys_timeout(TCP_TMR_INTERVAL, (sys_timeout_handler)tcpip_tcp_timer, NULL); 
   
  if(tcpip_init_done != NULL) { 
    tcpip_init_done(tcpip_init_done_arg); 
  } 
 
  while(1) {                          /* MAIN Loop */ 
    sys_mbox_fetch(mbox, (void *)&msg); 
    switch(msg->type) { 
    case TCPIP_MSG_API: 
      DEBUGF(TCPIP_DEBUG, ("tcpip_thread: API message %p\n", msg)); 
      api_msg_input(msg->msg.apimsg); 
      break; 
    case TCPIP_MSG_INPUT: 
      DEBUGF(TCPIP_DEBUG, ("tcpip_thread: IP packet %p\n", msg)); 
      ip_input(msg->msg.inp.p, msg->msg.inp.netif); 
      break; 
    default: 
      break; 
    } 
    memp_freep(MEMP_TCPIP_MSG, msg); 
  } 
} 
/*-----------------------------------------------------------------------------------*/ 
err_t 
tcpip_input(struct pbuf *p, struct netif *inp) 
{ 
  struct tcpip_msg *msg; 
   
  msg = memp_mallocp(MEMP_TCPIP_MSG); 
  if(msg == NULL) { 
    pbuf_free(p);     
    return ERR_MEM;   
  } 
   
  msg->type = TCPIP_MSG_INPUT; 
  msg->msg.inp.p = p; 
  msg->msg.inp.netif = inp; 
  sys_mbox_post(mbox, msg); 
  return ERR_OK; 
} 
/*-----------------------------------------------------------------------------------*/ 
void 
tcpip_apimsg(struct api_msg *apimsg) 
{ 
  struct tcpip_msg *msg; 
  msg = memp_mallocp(MEMP_TCPIP_MSG); 
  if(msg == NULL) { 
    memp_free(MEMP_TCPIP_MSG, apimsg); 
    return; 
  } 
  msg->type = TCPIP_MSG_API; 
  msg->msg.apimsg = apimsg; 
  sys_mbox_post(mbox, msg); 
} 
/*-----------------------------------------------------------------------------------*/ 
void 
tcpip_init(void (* initfunc)(void *), void *arg) 
{ 
  tcpip_init_done = initfunc; 
  tcpip_init_done_arg = arg; 
  mbox = sys_mbox_new(); 
  sys_thread_new((void *)tcpip_thread, NULL); 
} 
/*-----------------------------------------------------------------------------------*/