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author | patacongo <patacongo@42af7a65-404d-4744-a932-0658087f49c3> | 2010-07-14 17:17:39 +0000 |
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committer | patacongo <patacongo@42af7a65-404d-4744-a932-0658087f49c3> | 2010-07-14 17:17:39 +0000 |
commit | 8707a2078f34fc45b263f0256ef704f5ea3212d8 (patch) | |
tree | 891b5ea48104e43671b0a1ecf151f57f18d7cf3a /nuttx/net/uip/uip_igmpjoin.c | |
parent | 2d00a7cfa8a9357a1b4a9d3118e70065431d98a2 (diff) | |
download | px4-nuttx-8707a2078f34fc45b263f0256ef704f5ea3212d8.tar.gz px4-nuttx-8707a2078f34fc45b263f0256ef704f5ea3212d8.tar.bz2 px4-nuttx-8707a2078f34fc45b263f0256ef704f5ea3212d8.zip |
More cosmetic clean-up
git-svn-id: svn://svn.code.sf.net/p/nuttx/code/trunk@2800 42af7a65-404d-4744-a932-0658087f49c3
Diffstat (limited to 'nuttx/net/uip/uip_igmpjoin.c')
-rwxr-xr-x | nuttx/net/uip/uip_igmpjoin.c | 320 |
1 files changed, 160 insertions, 160 deletions
diff --git a/nuttx/net/uip/uip_igmpjoin.c b/nuttx/net/uip/uip_igmpjoin.c index 34f319ec3..a7118051a 100755 --- a/nuttx/net/uip/uip_igmpjoin.c +++ b/nuttx/net/uip/uip_igmpjoin.c @@ -1,160 +1,160 @@ -/****************************************************************************
- * net/uip/uip_igmpjoin.c
- *
- * Copyright (C) 2010 Gregory Nutt. All rights reserved.
- * Author: Gregory Nutt <spudmonkey@racsa.co.cr>
- *
- * 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 <net/uip/uipopt.h>
-#include <net/uip/uip.h>
-#include <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 */
+/**************************************************************************** + * net/uip/uip_igmpjoin.c + * + * Copyright (C) 2010 Gregory Nutt. All rights reserved. + * Author: Gregory Nutt <spudmonkey@racsa.co.cr> + * + * 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 <net/uip/uipopt.h> +#include <net/uip/uip.h> +#include <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 */ |