Function inp_freemoptions

freebsd/netinet/in_mcast.c:1659–1665

* Discard the IP multicast options (and source filters). To minimize * the amount of work done while holding locks such as the INP's * pcbinfo lock (which is used in the receive path), the free * operation is deferred to the epoch callback task. */

 * operation is deferred to the epoch callback task.
 */
void
inp_freemoptions(struct ip_moptions *imo)
{
	if (imo == NULL)
		return;
	inp_gcmoptions(imo);
}

/*
 * Atomically get source filters on a socket for an IPv4 multicast group.