bsd/netinet/in_mcast.c

42  *    products derived from this software without specific prior written
451 	struct ip_moptions *from;
454 	from = inp_findmoptions(from_inp);
455 	if (from == NULL)
460 		IMO_REMREF(from);
464 	IMO_LOCK(from);
467         to->imo_multicast_ifp = from->imo_multicast_ifp;
468         to->imo_multicast_vif = from->imo_multicast_vif;
469         to->imo_multicast_ttl = from->imo_multicast_ttl;
470         to->imo_multicast_loop = from->imo_multicast_loop;
493 	VERIFY(to->imo_max_memberships != 0 && from->imo_max_memberships != 0);
494 	if (to->imo_max_memberships < from->imo_max_memberships) {
499 		err = imo_grow(to, from->imo_max_memberships);
503 	VERIFY(to->imo_max_memberships >= from->imo_max_memberships);
509 	for (i = 0; i < from->imo_num_memberships; i++) {
511 			in_addmulti(&from->imo_membership[i]->inm_addr,
512 						from->imo_membership[i]->inm_ifp);
517 	VERIFY(to->imo_num_memberships == from->imo_num_memberships);
522 	IMO_UNLOCK(from);
523 	IMO_REMREF(from);
641 	inm->inm_ifma = ifma;		/* keep refcount from if_addmulti() */
814  * Prune a source entry from an existing socket-layer filter set,
908  * Reap unreferenced sources from socket-layer filter set.
1002  * from its internal counters. Predicates are:
1071  * which would eliminate the repeated lookup from root of ims nodes,
1228  * Reap unreferenced nodes from an in_multi's filter set.
1251  * Purge all source nodes from an in_multi's filter set.
1333 		*pinm = inm;	/* keep refcount from in_getmulti() */
1644 	IMO_REMREF(imo);	/* from inp_findmoptions() */
1704 	inp->inp_moptions = imo; /* keep reference from ip_allocmoptions() */
2100 			 * Do argument switcharoo from ip_mreq into
2320 		imo->imo_membership[idx] = inm;	/* from in_joingroup() */
2361 	IMO_REMREF(imo);	/* from inp_findmoptions() */
2434 		 * Attempt to look up hinted ifp from interface address.
2600 	IMO_REMREF(imo);	/* from inp_findmoptions() */
2694 	IMO_REMREF(imo);	/* from inp_findmoptions() */
2839 		 * difference like loop to avoid walking from root
2894 	IMO_REMREF(imo);	/* from inp_findmoptions() */
2958 			IMO_REMREF(imo);	/* from inp_findmoptions() */
2966 			IMO_REMREF(imo);	/* from inp_findmoptions() */
2975 			IMO_REMREF(imo);	/* from inp_findmoptions() */
2990 		IMO_REMREF(imo);	/* from inp_findmoptions() */
3028 		IMO_REMREF(imo);	/* from inp_findmoptions() */
3063 		IMO_REMREF(imo);	/* from inp_findmoptions() */
3473 	 * before acquiring in_multihead lock.  To prevent the inm from being