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Diffstat (limited to 'nuttx/net/uip/uip_igmpjoin.c')
| -rw-r--r-- | nuttx/net/uip/uip_igmpjoin.c | 160 |
1 files changed, 0 insertions, 160 deletions
diff --git a/nuttx/net/uip/uip_igmpjoin.c b/nuttx/net/uip/uip_igmpjoin.c deleted file mode 100644 index c02b0bb8f..000000000 --- a/nuttx/net/uip/uip_igmpjoin.c +++ /dev/null @@ -1,160 +0,0 @@ -/**************************************************************************** - * net/uip/uip_igmpjoin.c - * - * Copyright (C) 2010 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/uip/uipopt.h> -#include <nuttx/net/uip/uip.h> -#include <nuttx/net/uip/uip-igmp.h> - -#include "uip_internal.h" - -#ifdef CONFIG_NET_IGMP - -/**************************************************************************** - * Pre-processor Definitions - ****************************************************************************/ - -/**************************************************************************** - * Private Functions - ****************************************************************************/ - -/**************************************************************************** - * Public Functions - ****************************************************************************/ - -/**************************************************************************** - * Name: igmp_joingroup - * - * Description: - * Add the specified group address to the group. - * - * RFC 2236, 3. Protocol Description: - * - * "When a host joins a multicast group, it should immediately transmit - * an unsolicited Version 2 Membership Report for that group, in case it - * is the first member of that group on the network. To cover the - * possibility of the initial Membership Report being lost or damaged, - * it is recommended that it be repeated once or twice after short - * delays [Unsolicited Report Interval]. (A simple way to accomplish - * this is to send the initial Version 2 Membership Report and then act - * as if a Group-Specific Query was received for that group, and set a - * timer appropriately)." - * ________________ - * | | - * | | - * | | - * | | - * +--------->| Non-Member |<---------+ - * | | | | - * | | | | - * | | | | - * | |________________| | - * | | | - * | leave group | join group | leave group - * | (stop timer, |(send report, | (send leave - * | send leave if | set flag, | if flag set) - * | flag set) | start timer) | - * ________|________ | ________|________ - * | |<---------+ | | - * | | | | - * | |<-------------------| | - * | | query received | | - * | Delaying Member | (start timer) | Idle Member | - * +---->| |------------------->| | - * | | | report received | | - * | | | (stop timer, | | - * | | | clear flag) | | - * | |_________________|------------------->|_________________| - * | query received | timer expired - * | (reset timer if | (send report, - * | Max Resp Time | set flag) - * | < current timer) | - * +-------------------+ - * - * Assumptions: - * This function cannot be called from interrupt handling logic! - * - ****************************************************************************/ - -int igmp_joingroup(struct uip_driver_s *dev, FAR const struct in_addr *grpaddr) -{ - struct igmp_group_s *group; - - DEBUGASSERT(dev && grpaddr); - - /* Check if a this address is already in the group */ - - group = uip_grpfind(dev, &grpaddr->s_addr); - if (!group) - { - /* No... allocate a new entry */ - - nvdbg("Join to new group: %08x\n", grpaddr->s_addr); - group = uip_grpalloc(dev, &grpaddr->s_addr); - IGMP_STATINCR(uip_stat.igmp.joins); - - /* Send the Membership Report */ - - IGMP_STATINCR(uip_stat.igmp.report_sched); - uip_igmpwaitmsg(group, IGMPv2_MEMBERSHIP_REPORT); - - /* And start the timer at 10*100 msec */ - - uip_igmpstarttimer(group, 10); - - /* Add the group (MAC) address to the ether drivers MAC filter list */ - - uip_addmcastmac(dev, (FAR uip_ipaddr_t *)&grpaddr->s_addr); - return OK; - } - - /* Return EEXIST if the address is already a member of the group */ - - return -EEXIST; -} - -#endif /* CONFIG_NET_IGMP */ |