94 lines
3.5 KiB
C
94 lines
3.5 KiB
C
/****************************************************************************
|
|
* net/igmp/igmp_initialize.c
|
|
* IGMP initialization logic
|
|
*
|
|
* Copyright (C) 2010, 2014 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/ip.h>
|
|
#include <nuttx/net/igmp.h>
|
|
|
|
#include "devif/devif.h"
|
|
#include "igmp/igmp.h"
|
|
|
|
#ifdef CONFIG_NET_IGMP
|
|
|
|
/****************************************************************************
|
|
* Public Data
|
|
****************************************************************************/
|
|
|
|
const in_addr_t g_ipv4_allsystems = HTONL(0xe0000001);
|
|
const in_addr_t g_ipv4_allrouters = HTONL(0xe0000002);
|
|
|
|
/****************************************************************************
|
|
* Public Functions
|
|
****************************************************************************/
|
|
|
|
/****************************************************************************
|
|
* Name: igmp_devinit
|
|
*
|
|
* Description:
|
|
* Called when a new network device is registered to configure that device
|
|
* for IGMP support.
|
|
*
|
|
****************************************************************************/
|
|
|
|
void igmp_devinit(struct net_driver_s *dev)
|
|
{
|
|
ninfo("IGMP initializing dev %p\n", dev);
|
|
DEBUGASSERT(dev->d_igmp_grplist.head == NULL);
|
|
|
|
/* Add the all systems address to the group */
|
|
|
|
igmp_grpalloc(dev, &g_ipv4_allsystems);
|
|
|
|
/* Allow the IGMP messages at the MAC level */
|
|
|
|
igmp_addmcastmac(dev, &g_ipv4_allrouters);
|
|
igmp_addmcastmac(dev, &g_ipv4_allsystems);
|
|
}
|
|
|
|
#endif /* CONFIG_NET_IGMP */
|