void igmp_waitmsg(FAR struct igmp_group_s *group, uint8_t msgid)
{
net_lock_t flags;
/* Schedule to send the message */
flags = net_lock();
DEBUGASSERT(!IS_WAITMSG(group->flags));
SET_WAITMSG(group->flags);
igmp_schedmsg(group, msgid);
/* Then wait for the message to be sent */
while (IS_SCHEDMSG(group->flags))
{
/* Wait for the semaphore to be posted */
while (net_lockedwait(&group->sem) != 0)
{
/* The only error that should occur from net_lockedwait() is if
* the wait is awakened by a signal.
*/
ASSERT(get_errno() == EINTR);
}
}
/* The message has been sent and we are no longer waiting */
CLR_WAITMSG(group->flags);
net_unlock(flags);
}
static inline void igmp_sched_send(FAR struct net_driver_s *dev,
FAR struct igmp_group_s *group)
{
net_ipaddr_t *dest;
/* Check what kind of message we need to send. There are only two
* possibilities:
*/
if (group->msgid == IGMPv2_MEMBERSHIP_REPORT)
{
dest = &group->grpaddr;
nllvdbg("Send IGMPv2_MEMBERSHIP_REPORT, dest=%08x flags=%02x\n",
*dest, group->flags);
IGMP_STATINCR(g_netstats.igmp.report_sched);
SET_LASTREPORT(group->flags); /* Remember we were the last to report */
}
else
{
DEBUGASSERT(group->msgid == IGMP_LEAVE_GROUP);
dest = &g_allrouters;
nllvdbg("Send IGMP_LEAVE_GROUP, dest=%08x flags=%02x\n",
*dest, group->flags);
IGMP_STATINCR(g_netstats.igmp.leave_sched);
}
/* Send the message */
igmp_send(dev, group, dest);
/* Indicate that the message has been sent */
CLR_SCHEDMSG(group->flags);
group->msgid = 0;
/* If there is a thread waiting fore the message to be sent, wake it up */
if (IS_WAITMSG(group->flags))
{
nllvdbg("Awakening waiter\n");
sem_post(&group->sem);
}
}
