lwip/src/api/netifapi.c

/*
 * 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"
#include "lwip/arch.h"
#include "lwip/netifapi.h"
#include "lwip/tcpip.h"

#if LWIP_NETIF_API

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.type  = NETIFAPI_MSG_NETIF_ADD;
  msg.netif = netif;  
  msg.msg.add.ipaddr  = ipaddr;
  msg.msg.add.netmask = netmask;
  msg.msg.add.gw      = gw;
  msg.msg.add.state   = state;
  msg.msg.add.init    = init;
  msg.msg.add.input   = input;
  tcpip_apimsg(&msg);
  return msg.err;
}

err_t
netifapi_netif_remove( struct netif *netif)
{ struct netifapi_msg msg;
  msg.type  = NETIFAPI_MSG_NETIF_REMOVE;
  msg.netif = netif;  
  tcpip_apimsg(&msg);
  return msg.err;
}

err_t
netifapi_dhcp_start( struct netif *netif)
{ struct netifapi_msg msg;
  msg.type  = NETIFAPI_MSG_DHCP_START;
  msg.netif = netif;  
  tcpip_apimsg(&msg);
  return msg.err;
}

err_t
netifapi_dhcp_stop( struct netif *netif)
{ struct netifapi_msg msg;
  msg.type  = NETIFAPI_MSG_DHCP_STOP;
  msg.netif = netif;  
  tcpip_apimsg(&msg);
  return msg.err;
}

void
netifapi_msg_input( struct netifapi_msg *msg)
{ msg->err = ERR_OK;
  switch (msg->type) {
    case NETIFAPI_MSG_NETIF_ADD: {
      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;
      break;
    }
    case NETIFAPI_MSG_NETIF_REMOVE:
      netif_remove(msg->netif);
      break;
#if LWIP_DHCP    
    case NETIFAPI_MSG_DHCP_START:
      msg->err = dhcp_start(msg->netif);
      break;
    case NETIFAPI_MSG_DHCP_STOP:
      dhcp_stop(msg->netif);
      break;
#endif /* LWIP_DHCP */
  }
 sys_sem_signal(msg->sem);
}

#endif /* LWIP_NETIF_API */