2010-07-14 19:17:39 +02:00
|
|
|
/****************************************************************************
|
2014-05-30 21:05:19 +02:00
|
|
|
* net/igmp/igmp_msg.c
|
2010-07-14 19:17:39 +02:00
|
|
|
*
|
2011-03-15 21:26:34 +01:00
|
|
|
* Copyright (C) 2010-2011 Gregory Nutt. All rights reserved.
|
2012-09-13 20:32:24 +02:00
|
|
|
* Author: Gregory Nutt <gnutt@nuttx.org>
|
2010-07-14 19:17:39 +02:00
|
|
|
*
|
|
|
|
* 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.
|
|
|
|
*
|
2014-04-13 22:32:20 +02:00
|
|
|
* Redistribution and use in source and binary forms, with or without
|
|
|
|
* modification, are permitted provided that the following conditions
|
|
|
|
* are met:
|
2010-07-14 19:17:39 +02:00
|
|
|
*
|
2014-04-13 22:32:20 +02:00
|
|
|
* 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.
|
2010-07-14 19:17:39 +02:00
|
|
|
*
|
|
|
|
* THIS SOFTWARE IS PROVIDED BY CITEL TECHNOLOGIES AND CONTRIBUTORS ``AS IS''
|
2014-04-13 22:32:20 +02:00
|
|
|
* 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.
|
2010-07-14 19:17:39 +02:00
|
|
|
*
|
|
|
|
****************************************************************************/
|
|
|
|
|
|
|
|
/****************************************************************************
|
|
|
|
* Included Files
|
|
|
|
****************************************************************************/
|
|
|
|
|
|
|
|
#include <nuttx/config.h>
|
|
|
|
|
|
|
|
#include <assert.h>
|
|
|
|
#include <debug.h>
|
|
|
|
|
2014-06-24 16:53:28 +02:00
|
|
|
#include <nuttx/net/netconfig.h>
|
2014-07-05 00:38:51 +02:00
|
|
|
#include <nuttx/net/net.h>
|
2014-06-24 18:14:15 +02:00
|
|
|
#include <nuttx/net/igmp.h>
|
2010-07-14 19:17:39 +02:00
|
|
|
|
2014-06-29 02:07:02 +02:00
|
|
|
#include "devif/devif.h"
|
2014-06-25 17:52:36 +02:00
|
|
|
#include "igmp/igmp.h"
|
2010-07-14 19:17:39 +02:00
|
|
|
|
|
|
|
#ifdef CONFIG_NET_IGMP
|
|
|
|
|
|
|
|
/****************************************************************************
|
|
|
|
* Public Functions
|
|
|
|
****************************************************************************/
|
|
|
|
|
|
|
|
/****************************************************************************
|
2014-06-25 17:52:36 +02:00
|
|
|
* Name: igmp_schedmsg
|
2010-07-14 19:17:39 +02:00
|
|
|
*
|
|
|
|
* Description:
|
|
|
|
* Schedule a message to be send at the next driver polling interval.
|
|
|
|
*
|
|
|
|
* Assumptions:
|
|
|
|
* This function may be called in most any context.
|
|
|
|
*
|
|
|
|
****************************************************************************/
|
|
|
|
|
2014-06-25 17:52:36 +02:00
|
|
|
void igmp_schedmsg(FAR struct igmp_group_s *group, uint8_t msgid)
|
2010-07-14 19:17:39 +02:00
|
|
|
{
|
|
|
|
/* The following should be atomic */
|
|
|
|
|
2016-12-03 23:28:19 +01:00
|
|
|
net_lock();
|
2010-07-14 19:17:39 +02:00
|
|
|
DEBUGASSERT(!IS_SCHEDMSG(group->flags));
|
|
|
|
group->msgid = msgid;
|
|
|
|
SET_SCHEDMSG(group->flags);
|
2016-12-03 23:28:19 +01:00
|
|
|
net_unlock();
|
2010-07-14 19:17:39 +02:00
|
|
|
}
|
|
|
|
|
|
|
|
/****************************************************************************
|
2014-06-25 17:52:36 +02:00
|
|
|
* Name: igmp_waitmsg
|
2010-07-14 19:17:39 +02:00
|
|
|
*
|
|
|
|
* Description:
|
|
|
|
* Schedule a message to be send at the next driver polling interval and
|
|
|
|
* block, waiting for the message to be sent.
|
|
|
|
*
|
|
|
|
****************************************************************************/
|
|
|
|
|
2014-06-25 17:52:36 +02:00
|
|
|
void igmp_waitmsg(FAR struct igmp_group_s *group, uint8_t msgid)
|
2010-07-14 19:17:39 +02:00
|
|
|
{
|
2017-09-04 14:55:28 +02:00
|
|
|
int ret;
|
|
|
|
|
2010-07-14 19:17:39 +02:00
|
|
|
/* Schedule to send the message */
|
|
|
|
|
2016-12-03 23:28:19 +01:00
|
|
|
net_lock();
|
2010-07-14 19:17:39 +02:00
|
|
|
DEBUGASSERT(!IS_WAITMSG(group->flags));
|
|
|
|
SET_WAITMSG(group->flags);
|
2014-06-25 17:52:36 +02:00
|
|
|
igmp_schedmsg(group, msgid);
|
2010-07-14 19:17:39 +02:00
|
|
|
|
|
|
|
/* Then wait for the message to be sent */
|
|
|
|
|
|
|
|
while (IS_SCHEDMSG(group->flags))
|
|
|
|
{
|
|
|
|
/* Wait for the semaphore to be posted */
|
|
|
|
|
2017-09-04 14:55:28 +02:00
|
|
|
while ((ret = net_lockedwait(&group->sem)) < 0)
|
2010-07-14 19:17:39 +02:00
|
|
|
{
|
2014-06-26 22:23:21 +02:00
|
|
|
/* The only error that should occur from net_lockedwait() is if
|
2010-07-14 19:17:39 +02:00
|
|
|
* the wait is awakened by a signal.
|
|
|
|
*/
|
2014-04-13 22:32:20 +02:00
|
|
|
|
2018-02-20 19:24:53 +01:00
|
|
|
ASSERT(ret == -EINTR || ret == -ECANCELED);
|
2010-07-14 19:17:39 +02:00
|
|
|
}
|
2017-09-04 14:55:28 +02:00
|
|
|
|
|
|
|
UNUSED(ret);
|
2010-07-14 19:17:39 +02:00
|
|
|
}
|
|
|
|
|
|
|
|
/* The message has been sent and we are no longer waiting */
|
|
|
|
|
|
|
|
CLR_WAITMSG(group->flags);
|
2016-12-03 23:28:19 +01:00
|
|
|
net_unlock();
|
2010-07-14 19:17:39 +02:00
|
|
|
}
|
|
|
|
|
|
|
|
#endif /* CONFIG_NET_IGMP */
|