6a3c2aded6
* Simplify EINTR/ECANCEL error handling 1. Add semaphore uninterruptible wait function 2 .Replace semaphore wait loop with a single uninterruptible wait 3. Replace all sem_xxx to nxsem_xxx * Unify the void cast usage 1. Remove void cast for function because many place ignore the returned value witout cast 2. Replace void cast for variable with UNUSED macro
110 lines
3.8 KiB
C
110 lines
3.8 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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* 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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}
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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->d_igmp_grplist.head == NULL);
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/* Add the all systems address to the group */
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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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