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122 lines
4.2 KiB
122 lines
4.2 KiB
/**************************************************************************** |
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* net/uip/uip_igmpinit.c |
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* IGMP initialization logic |
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* |
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* Copyright (C) 2010 Gregory Nutt. All rights reserved. |
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* Author: Gregory Nutt <spudmonkey@racsa.co.cr> |
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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/uip/uip.h> |
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#include <nuttx/net/uip/uip-igmp.h> |
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#include "uip_internal.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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uip_ipaddr_t g_allsystems; |
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uip_ipaddr_t g_allrouters; |
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/**************************************************************************** |
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* Public Functions |
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****************************************************************************/ |
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/**************************************************************************** |
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* Name: uip_igmpinit |
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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 uip_igmpinit(void) |
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{ |
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nvdbg("IGMP initializing\n"); |
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uip_ipaddr(g_allrouters, 224, 0, 0, 2); |
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uip_ipaddr(g_allsystems, 224, 0, 0, 1); |
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/* Initialize the group allocation logic */ |
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uip_grpinit(); |
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} |
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/**************************************************************************** |
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* Name: uip_igmpdevinit |
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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 uip_igmpdevinit(struct uip_driver_s *dev) |
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{ |
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struct igmp_group_s *group; |
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nvdbg("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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group = uip_grpalloc(dev, &g_allsystems); |
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/* Allow the IGMP messages at the MAC level */ |
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uip_addmcastmac(dev, &g_allrouters); |
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uip_addmcastmac(dev, &g_allsystems); |
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} |
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#endif /* CONFIG_NET_IGMP */
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