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- /****************************************************************************
- * net/mld/mld_msg.c
- *
- * 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_lockedwait_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 */
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