136 lines
3.7 KiB
C
136 lines
3.7 KiB
C
/****************************************************************************
|
|
* net/mld/mld_msg.c
|
|
*
|
|
* SPDX-License-Identifier: Apache-2.0
|
|
*
|
|
* Licensed to the Apache Software Foundation (ASF) under one or more
|
|
* contributor license agreements. See the NOTICE file distributed with
|
|
* this work for additional information regarding copyright ownership. The
|
|
* ASF licenses this file to you under the Apache License, Version 2.0 (the
|
|
* "License"); you may not use this file except in compliance with the
|
|
* License. You may obtain a copy of the License at
|
|
*
|
|
* http://www.apache.org/licenses/LICENSE-2.0
|
|
*
|
|
* Unless required by applicable law or agreed to in writing, software
|
|
* distributed under the License is distributed on an "AS IS" BASIS, WITHOUT
|
|
* WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the
|
|
* License for the specific language governing permissions and limitations
|
|
* under the License.
|
|
*
|
|
****************************************************************************/
|
|
|
|
/****************************************************************************
|
|
* Included Files
|
|
****************************************************************************/
|
|
|
|
#include <nuttx/config.h>
|
|
|
|
#include <assert.h>
|
|
#include <debug.h>
|
|
|
|
#include <nuttx/net/netconfig.h>
|
|
#include <nuttx/net/net.h>
|
|
#include <nuttx/net/mld.h>
|
|
|
|
#include "devif/devif.h"
|
|
#include "netdev/netdev.h"
|
|
#include "mld/mld.h"
|
|
|
|
#ifdef CONFIG_NET_MLD
|
|
|
|
/****************************************************************************
|
|
* Public Functions
|
|
****************************************************************************/
|
|
|
|
/****************************************************************************
|
|
* Name: mld_schedmsg
|
|
*
|
|
* Description:
|
|
* Schedule a message to be send at the next driver polling interval.
|
|
*
|
|
* Assumptions:
|
|
* The network is locked
|
|
*
|
|
****************************************************************************/
|
|
|
|
int mld_schedmsg(FAR struct mld_group_s *group, uint8_t msgtype)
|
|
{
|
|
FAR struct net_driver_s *dev;
|
|
|
|
DEBUGASSERT(group != NULL && !IS_MLD_SCHEDMSG(group->flags));
|
|
DEBUGASSERT(group->ifindex > 0);
|
|
|
|
/* Get the device instance associated with the interface index
|
|
* of the group
|
|
*/
|
|
|
|
dev = netdev_findbyindex(group->ifindex);
|
|
if (dev == NULL)
|
|
{
|
|
mlderr("ERROR: No device for this interface index: %u\n",
|
|
group->ifindex);
|
|
return -ENODEV;
|
|
}
|
|
|
|
/* Schedule the message */
|
|
|
|
group->msgtype = msgtype;
|
|
SET_MLD_SCHEDMSG(group->flags);
|
|
|
|
/* Notify the device that we have a packet to send */
|
|
|
|
netdev_txnotify_dev(dev);
|
|
return OK;
|
|
}
|
|
|
|
/****************************************************************************
|
|
* Name: mld_waitmsg
|
|
*
|
|
* Description:
|
|
* Schedule a message to be send at the next driver polling interval and
|
|
* block, waiting for the message to be sent.
|
|
*
|
|
* Assumptions:
|
|
* The network is locked
|
|
*
|
|
****************************************************************************/
|
|
|
|
int mld_waitmsg(FAR struct mld_group_s *group, uint8_t msgtype)
|
|
{
|
|
int ret;
|
|
|
|
/* Schedule to send the message */
|
|
|
|
DEBUGASSERT(!IS_MLD_WAITMSG(group->flags));
|
|
SET_MLD_WAITMSG(group->flags);
|
|
|
|
ret = mld_schedmsg(group, msgtype);
|
|
if (ret < 0)
|
|
{
|
|
mlderr("ERROR: Failed to schedule the message: %d\n", ret);
|
|
goto errout;
|
|
}
|
|
|
|
/* Then wait for the message to be sent */
|
|
|
|
while (IS_MLD_SCHEDMSG(group->flags))
|
|
{
|
|
/* Wait for the semaphore to be posted */
|
|
|
|
ret = net_sem_wait_uninterruptible(&group->sem);
|
|
if (ret < 0)
|
|
{
|
|
break;
|
|
}
|
|
}
|
|
|
|
/* The message has been sent and we are no longer waiting */
|
|
|
|
errout:
|
|
CLR_MLD_WAITMSG(group->flags);
|
|
return ret;
|
|
}
|
|
|
|
#endif /* CONFIG_NET_MLD */
|