www.pudn.com > lwip-1.3.0.rar > netifapi.c

/** 
 * @file 
 * Network Interface Sequential API module 
 * 
 */ 
 
/* 
 * 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. 
 *  
 */ 
 
#include "lwip/opt.h" 
 
#if LWIP_NETIF_API /* don't build if not configured for use in lwipopts.h */ 
 
#include "lwip/netifapi.h" 
#include "lwip/tcpip.h" 
 
/** 
 * Call netif_add() inside the tcpip_thread context. 
 */ 
void 
do_netifapi_netif_add( struct netifapi_msg_msg *msg) 
{ 
  if (!netif_add( msg->netif, 
                  msg->msg.add.ipaddr, 
                  msg->msg.add.netmask, 
                  msg->msg.add.gw, 
                  msg->msg.add.state, 
                  msg->msg.add.init, 
                  msg->msg.add.input)) { 
    msg->err = ERR_IF; 
  } else { 
    msg->err = ERR_OK; 
  } 
  TCPIP_NETIFAPI_ACK(msg); 
} 
 
/** 
 * Call the "errtfunc" (or the "voidfunc" if "errtfunc" is NULL) inside the 
 * tcpip_thread context. 
 */ 
void 
do_netifapi_netif_common( struct netifapi_msg_msg *msg) 
{ 
  if (msg->msg.common.errtfunc!=NULL) { 
    msg->err = 
    msg->msg.common.errtfunc(msg->netif); 
  } else { 
    msg->err = ERR_OK; 
    msg->msg.common.voidfunc(msg->netif); 
  } 
  TCPIP_NETIFAPI_ACK(msg); 
} 
 
/** 
 * Call netif_add() in a thread-safe way by running that function inside the 
 * tcpip_thread context. 
 * 
 * @note for params @see netif_add() 
 */ 
err_t 
netifapi_netif_add(struct netif *netif, 
                   struct ip_addr *ipaddr, 
                   struct ip_addr *netmask, 
                   struct ip_addr *gw, 
                   void *state, 
                   err_t (* init)(struct netif *netif), 
                   err_t (* input)(struct pbuf *p, struct netif *netif)) 
{ 
  struct netifapi_msg msg; 
  msg.function = do_netifapi_netif_add; 
  msg.msg.netif = netif; 
  msg.msg.msg.add.ipaddr  = ipaddr; 
  msg.msg.msg.add.netmask = netmask; 
  msg.msg.msg.add.gw      = gw; 
  msg.msg.msg.add.state   = state; 
  msg.msg.msg.add.init    = init; 
  msg.msg.msg.add.input   = input; 
  TCPIP_NETIFAPI(&msg); 
  return msg.msg.err; 
} 
 
/** 
 * call the "errtfunc" (or the "voidfunc" if "errtfunc" is NULL) in a thread-safe 
 * way by running that function inside the tcpip_thread context. 
 * 
 * @note use only for functions where there is only "netif" parameter. 
 */ 
err_t 
netifapi_netif_common( struct netif *netif, 
                       void  (* voidfunc)(struct netif *netif), 
                       err_t (* errtfunc)(struct netif *netif) ) 
{ 
  struct netifapi_msg msg; 
  msg.function = do_netifapi_netif_common; 
  msg.msg.netif = netif; 
  msg.msg.msg.common.voidfunc = voidfunc; 
  msg.msg.msg.common.errtfunc = errtfunc; 
  TCPIP_NETIFAPI(&msg); 
  return msg.msg.err; 
} 
 
#endif /* LWIP_NETIF_API */