Function im6o_match_source

freebsd/netinet6/in6_mcast.c:292–307

* Find an IPv6 multicast source entry for this imo which matches * the given group index for this socket, and source address. * * XXX TODO: The scope ID, if present in src, is stripped before * any comparison. We SHOULD enforce scope/zone checks where the source * filter entry has a link scope. * * NOTE: This does not check if the entry is in-mode, merely if * it exists, which may not be t

 * it exists, which may not be the desired behaviour.
 */
static struct in6_msource *
im6o_match_source(struct in6_mfilter *imf, const struct sockaddr *src)
{
	struct ip6_msource	 find;
	struct ip6_msource	*ims;
	const sockunion_t	*psa;

	KASSERT(src->sa_family == AF_INET6, ("%s: !AF_INET6", __func__));

	psa = (const sockunion_t *)src;
	find.im6s_addr = psa->sin6.sin6_addr;
	in6_clearscope(&find.im6s_addr);		/* XXX */
	ims = RB_FIND(ip6_msource_tree, &imf->im6f_sources, &find);

	return ((struct in6_msource *)ims);
}

/*
 * Perform filtering for multicast datagrams on a socket by group and source.