230     struct ip_moptions *imo, struct inpcb *inp)  in ip_output()  argument
342 	    imo != NULL && imo->imo_multicast_if_index != 0) {  in ip_output()
343 		ifp = mifp = if_get_byindex(imo->imo_multicast_if_index, &psref);  in ip_output()
415 		if (imo != NULL)  in ip_output()
416 			ip->ip_ttl = imo->imo_multicast_ttl;  in ip_output()
474 		if (inmgroup && (imo == NULL || imo->imo_multicast_loop)) {  in ip_output()
794 			    imo, inp);  in ip_output()
1432 	struct ip_moptions *imo;  in ip_pktinfo_prepare()  local
1472 		imo = &pktopts->ippo_imobuf;	/* local buf in pktopts */  in ip_pktinfo_prepare()
1474 			memcpy(imo, pktopts->ippo_imo, sizeof(*imo));  in ip_pktinfo_prepare()
1476 			memset(imo, 0, sizeof(*imo));  in ip_pktinfo_prepare()
1477 			imo->imo_multicast_ttl = IP_DEFAULT_MULTICAST_TTL;  in ip_pktinfo_prepare()
1478 			imo->imo_multicast_loop = IP_DEFAULT_MULTICAST_LOOP;  in ip_pktinfo_prepare()
1480 		imo->imo_multicast_if_index = pktinfo->ipi_ifindex;  in ip_pktinfo_prepare()
1481 		pktopts->ippo_imo = imo;  in ip_pktinfo_prepare()
1812 ip_add_membership(struct ip_moptions *imo, const struct sockopt *sopt)  in ip_add_membership()  argument
1848 	for (i = 0; i < imo->imo_num_memberships; ++i) {  in ip_add_membership()
1849 		if (imo->imo_membership[i]->inm_ifp == ifp &&  in ip_add_membership()
1850 		    in_hosteq(imo->imo_membership[i]->inm_addr, ia))  in ip_add_membership()
1853 	if (i < imo->imo_num_memberships) {  in ip_add_membership()
1867 	imo->imo_membership[i] = in_addmulti(&ia, ifp);  in ip_add_membership()
1868 	if (imo->imo_membership[i] == NULL) {  in ip_add_membership()
1873 	++imo->imo_num_memberships;  in ip_add_membership()
1886 ip_drop_membership(struct ip_moptions *imo, const struct sockopt *sopt)  in ip_drop_membership()  argument
1912 	for (i = 0; i < imo->imo_num_memberships; ++i) {  in ip_drop_membership()
1914 		     imo->imo_membership[i]->inm_ifp == ifp) &&  in ip_drop_membership()
1915 		    in_hosteq(imo->imo_membership[i]->inm_addr, ia))  in ip_drop_membership()
1918 	if (i == imo->imo_num_memberships) {  in ip_drop_membership()
1927 	in_delmulti(imo->imo_membership[i]);  in ip_drop_membership()
1932 	for (++i; i < imo->imo_num_memberships; ++i)  in ip_drop_membership()
1933 		imo->imo_membership[i-1] = imo->imo_membership[i];  in ip_drop_membership()
1934 	--imo->imo_num_memberships;  in ip_drop_membership()
1948 	struct ip_moptions *imo = *pimo;  in ip_setmoptions()  local
1955 	if (!imo) {  in ip_setmoptions()
1960 		imo = kmem_intr_alloc(sizeof(*imo), KM_NOSLEEP);  in ip_setmoptions()
1961 		if (imo == NULL)  in ip_setmoptions()
1964 		imo->imo_multicast_if_index = 0;  in ip_setmoptions()
1965 		imo->imo_multicast_addr.s_addr = INADDR_ANY;  in ip_setmoptions()
1966 		imo->imo_multicast_ttl = IP_DEFAULT_MULTICAST_TTL;  in ip_setmoptions()
1967 		imo->imo_multicast_loop = IP_DEFAULT_MULTICAST_LOOP;  in ip_setmoptions()
1968 		imo->imo_num_memberships = 0;  in ip_setmoptions()
1969 		*pimo = imo;  in ip_setmoptions()
1988 			imo->imo_multicast_if_index = 0;  in ip_setmoptions()
2003 		imo->imo_multicast_if_index = ifp->if_index;  in ip_setmoptions()
2006 			imo->imo_multicast_addr = addr;  in ip_setmoptions()
2008 			imo->imo_multicast_addr.s_addr = INADDR_ANY;  in ip_setmoptions()
2016 		error = ip_getoptval(sopt, &imo->imo_multicast_ttl, MAXTTL);  in ip_setmoptions()
2024 		error = ip_getoptval(sopt, &imo->imo_multicast_loop, 1);  in ip_setmoptions()
2028 		error = ip_add_membership(imo, sopt);  in ip_setmoptions()
2032 		error = ip_drop_membership(imo, sopt);  in ip_setmoptions()
2043 	if (imo->imo_multicast_if_index == 0 &&  in ip_setmoptions()
2044 	    imo->imo_multicast_ttl == IP_DEFAULT_MULTICAST_TTL &&  in ip_setmoptions()
2045 	    imo->imo_multicast_loop == IP_DEFAULT_MULTICAST_LOOP &&  in ip_setmoptions()
2046 	    imo->imo_num_memberships == 0) {  in ip_setmoptions()
2047 		kmem_intr_free(imo, sizeof(*imo));  in ip_setmoptions()
2058 ip_getmoptions(struct ip_moptions *imo, struct sockopt *sopt)  in ip_getmoptions()  argument
2068 		if (imo == NULL || imo->imo_multicast_if_index == 0)  in ip_getmoptions()
2070 		else if (imo->imo_multicast_addr.s_addr) {  in ip_getmoptions()
2072 			addr = imo->imo_multicast_addr;  in ip_getmoptions()
2078 			ifp = if_byindex(imo->imo_multicast_if_index);  in ip_getmoptions()
2089 		optval = imo ? imo->imo_multicast_ttl  in ip_getmoptions()
2096 		optval = imo ? imo->imo_multicast_loop  in ip_getmoptions()
2113 ip_freemoptions(struct ip_moptions *imo)  in ip_freemoptions()  argument
2119 	if (imo != NULL) {  in ip_freemoptions()
2120 		for (i = 0; i < imo->imo_num_memberships; ++i) {  in ip_freemoptions()
2121 			struct in_multi *inm = imo->imo_membership[i];  in ip_freemoptions()
2126 		kmem_intr_free(imo, sizeof(*imo));  in ip_freemoptions()