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
114 lines
3.9 KiB
C
114 lines
3.9 KiB
C
/****************************************************************************
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* net/mld/mld_init.c
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* MLD initialization logic
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*
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* Copyright (C) 2018 Gregory Nutt. All rights reserved.
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* Author: Gregory Nutt <gnutt@nuttx.org>
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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 <string.h>
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#include <assert.h>
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#include <debug.h>
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#include <nuttx/wdog.h>
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#include <nuttx/net/netdev.h>
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#include <nuttx/net/ip.h>
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#include <nuttx/net/mld.h>
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#include "devif/devif.h"
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#include "inet/inet.h"
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#include "mld/mld.h"
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/****************************************************************************
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* Public Functions
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****************************************************************************/
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/****************************************************************************
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* Name: mld_initialize
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*
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* Description:
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* Perform one-time MLD initialization.
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*
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****************************************************************************/
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void mld_initialize(void)
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{
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}
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/****************************************************************************
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* Name: mld_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 MLD support.
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*
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****************************************************************************/
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void mld_devinit(struct net_driver_s *dev)
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{
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mldinfo("MLD initializing dev %p\n", dev);
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/* Initialize the MLD state in the device structure */
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memset(&dev->d_mld, 0, sizeof(struct mld_netdev_s));
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dev->d_mld.gendog = wd_create();
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dev->d_mld.v1dog = wd_create();
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DEBUGASSERT(dev->d_mld.gendog != NULL && dev->d_mld.v1dog != NULL);
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/* All routers start up as a Querier on each of their attached links. */
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SET_MLD_QUERIER(dev->d_mld.flags);
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/* Add the all nodes address to the group
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* REVISIT: Do we need this? What is it for? It is clone from IGMP and
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* probably is not relevant here.
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*/
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mld_grpalloc(dev, g_ipv6_allnodes);
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/* Allow the MLD messages at the MAC level */
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mld_addmcastmac(dev, g_ipv6_allnodes);
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mld_addmcastmac(dev, g_ipv6_allrouters);
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mld_addmcastmac(dev, g_ipv6_allmldv2routers);
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#ifdef CONFIG_NET_MLD_ROUTER
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/* Start the general query timer. */
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mld_start_gentimer(dev, MSEC2TICK(MLD_QUERY_MSEC));
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#endif
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}
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