122 lines
4.2 KiB
C
122 lines
4.2 KiB
C
/****************************************************************************
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* net/igmp/igmp_init.c
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* IGMP initialization logic
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*
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* Copyright (C) 2010, 2014 Gregory Nutt. All rights reserved.
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* Author: Gregory Nutt <gnutt@nuttx.org>
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*
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* The NuttX implementation of IGMP was inspired by the IGMP add-on for the
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* lwIP TCP/IP stack by Steve Reynolds:
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*
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* Copyright (c) 2002 CITEL Technologies Ltd.
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* All rights reserved.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions
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* are met:
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*
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* 1. Redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer.
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* 2. Redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in the
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* documentation and/or other materials provided with the distribution.
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* 3. Neither the name of CITEL Technologies Ltd nor the names of its contributors
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* may be used to endorse or promote products derived from this software
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* without specific prior written permission.
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*
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* THIS SOFTWARE IS PROVIDED BY CITEL TECHNOLOGIES AND CONTRIBUTORS ``AS IS''
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* AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
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* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
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* ARE DISCLAIMED. IN NO EVENT SHALL CITEL TECHNOLOGIES OR CONTRIBUTORS BE LIABLE
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* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
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* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
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* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
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* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
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* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
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* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
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* SUCH DAMAGE.
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*
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****************************************************************************/
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/****************************************************************************
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* Included Files
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****************************************************************************/
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#include <nuttx/config.h>
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#include <assert.h>
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#include <debug.h>
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#include <nuttx/net/ip.h>
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#include <nuttx/net/igmp.h>
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#include "devif/devif.h"
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#include "igmp/igmp.h"
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#ifdef CONFIG_NET_IGMP
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/****************************************************************************
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* Pre-processor Definitions
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****************************************************************************/
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#ifdef CONFIG_NET_IPv6
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# error "IGMP for IPv6 not supported"
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#endif
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/****************************************************************************
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* Public Data
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****************************************************************************/
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in_addr_t g_ipv4_allsystems;
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in_addr_t g_ipv4_allrouters;
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/****************************************************************************
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* Public Functions
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****************************************************************************/
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/****************************************************************************
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* Name: igmp_initialize
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*
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* Description:
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* Perform one-time IGMP initialization.
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*
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****************************************************************************/
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void igmp_initialize(void)
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{
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ninfo("IGMP initializing\n");
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net_ipaddr(g_ipv4_allrouters, 224, 0, 0, 2);
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net_ipaddr(g_ipv4_allsystems, 224, 0, 0, 1);
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/* Initialize the group allocation logic */
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igmp_grpinit();
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}
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/****************************************************************************
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* Name: igmp_devinit
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*
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* Description:
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* Called when a new network device is registered to configure that device
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* for IGMP support.
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*
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****************************************************************************/
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void igmp_devinit(struct net_driver_s *dev)
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{
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ninfo("IGMP initializing dev %p\n", dev);
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DEBUGASSERT(dev->grplist.head == NULL);
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/* Add the all systems address to the group */
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(void)igmp_grpalloc(dev, &g_ipv4_allsystems);
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/* Allow the IGMP messages at the MAC level */
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igmp_addmcastmac(dev, &g_ipv4_allrouters);
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igmp_addmcastmac(dev, &g_ipv4_allsystems);
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}
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#endif /* CONFIG_NET_IGMP */
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