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- /****************************************************************************
- * net/mld/mld_msg.c
- *
- * Copyright (C) 2018 Gregory Nutt. All rights reserved.
- * Author: Gregory Nutt <gnutt@nuttx.org>
- *
- * 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 <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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