/****************************************************************************
* net/uip/uip_igmpinit.c
* IGMP initialization logic
*
* Copyright (C) 2010 Gregory Nutt. All rights reserved.
* Author: Gregory Nutt <gnutt@nuttx.org>
*
* The NuttX implementation of IGMP was inspired by the IGMP add-on for the
* lwIP TCP/IP stack by Steve Reynolds:
*
* Copyright (c) 2002 CITEL Technologies Ltd.
* 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 CITEL Technologies Ltd 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 CITEL TECHNOLOGIES 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 CITEL TECHNOLOGIES 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.
*
****************************************************************************/
/****************************************************************************
* Included Files
****************************************************************************/
#include <nuttx/config.h>
#include <assert.h>
#include <debug.h>
#include <nuttx/net/uip/uip.h>
#include <nuttx/net/uip/uip-igmp.h>
#include "uip_internal.h"
#ifdef CONFIG_NET_IGMP
/****************************************************************************
* Pre-processor Definitions
****************************************************************************/
#ifdef CONFIG_NET_IPv6
# error "IGMP for IPv6 not supported"
#endif
/****************************************************************************
* Public Data
****************************************************************************/
uip_ipaddr_t g_allsystems;
uip_ipaddr_t g_allrouters;
/****************************************************************************
* Public Functions
****************************************************************************/
/****************************************************************************
* Name: uip_igmpinit
*
* Description:
* Perform one-time IGMP initialization.
*
****************************************************************************/
void uip_igmpinit(void)
{
nvdbg("IGMP initializing\n");
uip_ipaddr(g_allrouters, 224, 0, 0, 2);
uip_ipaddr(g_allsystems, 224, 0, 0, 1);
/* Initialize the group allocation logic */
uip_grpinit();
}
/****************************************************************************
* Name: uip_igmpdevinit
*
* Description:
* Called when a new network device is registered to configure that device
* for IGMP support.
*
****************************************************************************/
void uip_igmpdevinit(struct uip_driver_s *dev)
{
struct igmp_group_s *group;
nvdbg("IGMP initializing dev %p\n", dev);
DEBUGASSERT(dev->grplist.head == NULL);
/* Add the all systems address to the group */
group = uip_grpalloc(dev, &g_allsystems);
/* Allow the IGMP messages at the MAC level */
uip_addmcastmac(dev, &g_allrouters);
uip_addmcastmac(dev, &g_allsystems);
}
#endif /* CONFIG_NET_IGMP */
