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