7  * @ingroup link
9  * Virtual eXtensible Local Area Network link module
12  * \b Link Type Name: "vxlan"
25 #include <netlink-private/route/link/api.h>
26 #include <netlink/route/link/vxlan.h>
119 static int vxlan_alloc(struct rtnl_link *link)  in vxlan_alloc()  argument
123 	if (link->l_info)  in vxlan_alloc()
124 		memset(link->l_info, 0, sizeof(*vxi));  in vxlan_alloc()
129 		link->l_info = vxi;  in vxlan_alloc()
135 static int vxlan_parse(struct rtnl_link *link, struct nlattr *data,  in vxlan_parse()  argument
142 	NL_DBG(3, "Parsing VXLAN link info\n");  in vxlan_parse()
147 	if ((err = vxlan_alloc(link)) < 0)  in vxlan_parse()
150 	vxi = link->l_info;  in vxlan_parse()
294 static void vxlan_free(struct rtnl_link *link)  in vxlan_free()  argument
296 	struct vxlan_info *vxi = link->l_info;  in vxlan_free()
299 	link->l_info = NULL;  in vxlan_free()
302 static void vxlan_dump_line(struct rtnl_link *link, struct nl_dump_params *p)  in vxlan_dump_line()  argument
304 	struct vxlan_info *vxi = link->l_info;  in vxlan_dump_line()
309 static void vxlan_dump_details(struct rtnl_link *link, struct nl_dump_params *p)  in vxlan_dump_details()  argument
311 	struct vxlan_info *vxi = link->l_info;  in vxlan_dump_details()
328 		nl_dump(p, "      link ");  in vxlan_dump_details()
331 		parent = link_lookup(link->ce_cache, vxi->vxi_link);  in vxlan_dump_details()
514 static int vxlan_put_attrs(struct nl_msg *msg, struct rtnl_link *link)  in vxlan_put_attrs()  argument
516 	struct vxlan_info *vxi = link->l_info;  in vxlan_put_attrs()
623 	diff |= VXLAN_DIFF(LINK,  a->vxi_link  != b->vxi_link);  in vxlan_compare()
669 #define IS_VXLAN_LINK_ASSERT(link) \  argument
670 	if ((link)->l_info_ops != &vxlan_info_ops) { \
671 		APPBUG("Link is not a vxlan link. set type \"vxlan\" first."); \
682  * Allocate link object of type VXLAN
684  * @return Allocated link object or NULL.
688 	struct rtnl_link *link;  in rtnl_link_vxlan_alloc()  local
690 	if (!(link = rtnl_link_alloc()))  in rtnl_link_vxlan_alloc()
693 	if (rtnl_link_set_type(link, "vxlan") < 0) {  in rtnl_link_vxlan_alloc()
694 		rtnl_link_put(link);  in rtnl_link_vxlan_alloc()
698 	return link;  in rtnl_link_vxlan_alloc()
702  * Check if link is a VXLAN link
703  * @arg link		Link object
705  * @return True if link is a VXLAN link, otherwise false is returned.
707 int rtnl_link_is_vxlan(struct rtnl_link *link)  in rtnl_link_is_vxlan()  argument
709 	return link->l_info_ops && !strcmp(link->l_info_ops->io_name, "vxlan");  in rtnl_link_is_vxlan()
714  * @arg link		Link object
719 int rtnl_link_vxlan_set_id(struct rtnl_link *link, uint32_t id)  in rtnl_link_vxlan_set_id()  argument
721 	struct vxlan_info *vxi = link->l_info;  in rtnl_link_vxlan_set_id()
723 	IS_VXLAN_LINK_ASSERT(link);  in rtnl_link_vxlan_set_id()
736  * @arg link		Link object
741 int rtnl_link_vxlan_get_id(struct rtnl_link *link, uint32_t *id)  in rtnl_link_vxlan_get_id()  argument
743 	struct vxlan_info *vxi = link->l_info;  in rtnl_link_vxlan_get_id()
745 	IS_VXLAN_LINK_ASSERT(link);  in rtnl_link_vxlan_get_id()
760  * @arg link		Link object
765 int rtnl_link_vxlan_set_group(struct rtnl_link *link, struct nl_addr *addr)  in rtnl_link_vxlan_set_group()  argument
767 	struct vxlan_info *vxi = link->l_info;  in rtnl_link_vxlan_set_group()
769 	IS_VXLAN_LINK_ASSERT(link);  in rtnl_link_vxlan_set_group()
791  * @arg link		Link object
796 int rtnl_link_vxlan_get_group(struct rtnl_link *link, struct nl_addr **addr)  in rtnl_link_vxlan_get_group()  argument
798 	struct vxlan_info *vxi = link->l_info;  in rtnl_link_vxlan_get_group()
800 	IS_VXLAN_LINK_ASSERT(link);  in rtnl_link_vxlan_get_group()
817  * @arg link		Link object
822 int rtnl_link_vxlan_set_link(struct rtnl_link *link, uint32_t index)  in rtnl_link_vxlan_set_link()  argument
824 	struct vxlan_info *vxi = link->l_info;  in rtnl_link_vxlan_set_link()
826 	IS_VXLAN_LINK_ASSERT(link);  in rtnl_link_vxlan_set_link()
836  * @arg link		Link object
841 int rtnl_link_vxlan_get_link(struct rtnl_link *link, uint32_t *index)  in rtnl_link_vxlan_get_link()  argument
843 	struct vxlan_info *vxi = link->l_info;  in rtnl_link_vxlan_get_link()
845 	IS_VXLAN_LINK_ASSERT(link);  in rtnl_link_vxlan_get_link()
860  * @arg link		Link object
865 int rtnl_link_vxlan_set_local(struct rtnl_link *link, struct nl_addr *addr)  in rtnl_link_vxlan_set_local()  argument
867 	struct vxlan_info *vxi = link->l_info;  in rtnl_link_vxlan_set_local()
869 	IS_VXLAN_LINK_ASSERT(link);  in rtnl_link_vxlan_set_local()
891  * @arg link		Link object
896 int rtnl_link_vxlan_get_local(struct rtnl_link *link, struct nl_addr **addr)  in rtnl_link_vxlan_get_local()  argument
898 	struct vxlan_info *vxi = link->l_info;  in rtnl_link_vxlan_get_local()
900 	IS_VXLAN_LINK_ASSERT(link);  in rtnl_link_vxlan_get_local()
917  * @arg link		Link object
922 int rtnl_link_vxlan_set_ttl(struct rtnl_link *link, uint8_t ttl)  in rtnl_link_vxlan_set_ttl()  argument
924 	struct vxlan_info *vxi = link->l_info;  in rtnl_link_vxlan_set_ttl()
926 	IS_VXLAN_LINK_ASSERT(link);  in rtnl_link_vxlan_set_ttl()
936  * @arg link		Link object
940 int rtnl_link_vxlan_get_ttl(struct rtnl_link *link)  in rtnl_link_vxlan_get_ttl()  argument
942 	struct vxlan_info *vxi = link->l_info;  in rtnl_link_vxlan_get_ttl()
944 	IS_VXLAN_LINK_ASSERT(link);  in rtnl_link_vxlan_get_ttl()
954  * @arg link		Link object
959 int rtnl_link_vxlan_set_tos(struct rtnl_link *link, uint8_t tos)  in rtnl_link_vxlan_set_tos()  argument
961 	struct vxlan_info *vxi = link->l_info;  in rtnl_link_vxlan_set_tos()
963 	IS_VXLAN_LINK_ASSERT(link);  in rtnl_link_vxlan_set_tos()
973  * @arg link		Link object
977 int rtnl_link_vxlan_get_tos(struct rtnl_link *link)  in rtnl_link_vxlan_get_tos()  argument
979 	struct vxlan_info *vxi = link->l_info;  in rtnl_link_vxlan_get_tos()
981 	IS_VXLAN_LINK_ASSERT(link);  in rtnl_link_vxlan_get_tos()
991  * @arg link		Link object
996 int rtnl_link_vxlan_set_learning(struct rtnl_link *link, uint8_t learning)  in rtnl_link_vxlan_set_learning()  argument
998 	struct vxlan_info *vxi = link->l_info;  in rtnl_link_vxlan_set_learning()
1000 	IS_VXLAN_LINK_ASSERT(link);  in rtnl_link_vxlan_set_learning()
1010  * @arg link		Link object
1014 int rtnl_link_vxlan_get_learning(struct rtnl_link *link)  in rtnl_link_vxlan_get_learning()  argument
1016 	struct vxlan_info *vxi = link->l_info;  in rtnl_link_vxlan_get_learning()
1018 	IS_VXLAN_LINK_ASSERT(link);  in rtnl_link_vxlan_get_learning()
1028  * @arg link		Link object
1032 int rtnl_link_vxlan_enable_learning(struct rtnl_link *link)  in rtnl_link_vxlan_enable_learning()  argument
1034 	return rtnl_link_vxlan_set_learning(link, 1);  in rtnl_link_vxlan_enable_learning()
1039  * @arg link		Link object
1043 int rtnl_link_vxlan_disable_learning(struct rtnl_link *link)  in rtnl_link_vxlan_disable_learning()  argument
1045 	return rtnl_link_vxlan_set_learning(link, 0);  in rtnl_link_vxlan_disable_learning()
1050  * @arg link		Link object
1055 int rtnl_link_vxlan_set_ageing(struct rtnl_link *link, uint32_t expiry)  in rtnl_link_vxlan_set_ageing()  argument
1057 	struct vxlan_info *vxi = link->l_info;  in rtnl_link_vxlan_set_ageing()
1059 	IS_VXLAN_LINK_ASSERT(link);  in rtnl_link_vxlan_set_ageing()
1069  * @arg link		Link object
1074 int rtnl_link_vxlan_get_ageing(struct rtnl_link *link, uint32_t *expiry)  in rtnl_link_vxlan_get_ageing()  argument
1076 	struct vxlan_info *vxi = link->l_info;  in rtnl_link_vxlan_get_ageing()
1078 	IS_VXLAN_LINK_ASSERT(link);  in rtnl_link_vxlan_get_ageing()
1093  * @arg link		Link object
1098 int rtnl_link_vxlan_set_limit(struct rtnl_link *link, uint32_t limit)  in rtnl_link_vxlan_set_limit()  argument
1100 	struct vxlan_info *vxi = link->l_info;  in rtnl_link_vxlan_set_limit()
1102 	IS_VXLAN_LINK_ASSERT(link);  in rtnl_link_vxlan_set_limit()
1112  * @arg link		Link object
1117 int rtnl_link_vxlan_get_limit(struct rtnl_link *link, uint32_t *limit)  in rtnl_link_vxlan_get_limit()  argument
1119 	struct vxlan_info *vxi = link->l_info;  in rtnl_link_vxlan_get_limit()
1121 	IS_VXLAN_LINK_ASSERT(link);  in rtnl_link_vxlan_get_limit()
1136  * @arg link		Link object
1141 int rtnl_link_vxlan_set_port_range(struct rtnl_link *link,  in rtnl_link_vxlan_set_port_range()  argument
1144 	struct vxlan_info *vxi = link->l_info;  in rtnl_link_vxlan_set_port_range()
1146 	IS_VXLAN_LINK_ASSERT(link);  in rtnl_link_vxlan_set_port_range()
1159  * @arg link		Link object
1164 int rtnl_link_vxlan_get_port_range(struct rtnl_link *link,  in rtnl_link_vxlan_get_port_range()  argument
1167 	struct vxlan_info *vxi = link->l_info;  in rtnl_link_vxlan_get_port_range()
1169 	IS_VXLAN_LINK_ASSERT(link);  in rtnl_link_vxlan_get_port_range()
1184  * @arg link		Link object
1189 int rtnl_link_vxlan_set_proxy(struct rtnl_link *link, uint8_t proxy)  in rtnl_link_vxlan_set_proxy()  argument
1191 	struct vxlan_info *vxi = link->l_info;  in rtnl_link_vxlan_set_proxy()
1193 	IS_VXLAN_LINK_ASSERT(link);  in rtnl_link_vxlan_set_proxy()
1203  * @arg link		Link object
1207 int rtnl_link_vxlan_get_proxy(struct rtnl_link *link)  in rtnl_link_vxlan_get_proxy()  argument
1209 	struct vxlan_info *vxi = link->l_info;  in rtnl_link_vxlan_get_proxy()
1211 	IS_VXLAN_LINK_ASSERT(link);  in rtnl_link_vxlan_get_proxy()
1221  * @arg link		Link object
1225 int rtnl_link_vxlan_enable_proxy(struct rtnl_link *link)  in rtnl_link_vxlan_enable_proxy()  argument
1227 	return rtnl_link_vxlan_set_proxy(link, 1);  in rtnl_link_vxlan_enable_proxy()
1232  * @arg link		Link object
1236 int rtnl_link_vxlan_disable_proxy(struct rtnl_link *link)  in rtnl_link_vxlan_disable_proxy()  argument
1238 	return rtnl_link_vxlan_set_proxy(link, 0);  in rtnl_link_vxlan_disable_proxy()
1243  * @arg link		Link object
1248 int rtnl_link_vxlan_set_rsc(struct rtnl_link *link, uint8_t rsc)  in rtnl_link_vxlan_set_rsc()  argument
1250 	struct vxlan_info *vxi = link->l_info;  in rtnl_link_vxlan_set_rsc()
1252 	IS_VXLAN_LINK_ASSERT(link);  in rtnl_link_vxlan_set_rsc()
1262  * @arg link		Link object
1266 int rtnl_link_vxlan_get_rsc(struct rtnl_link *link)  in rtnl_link_vxlan_get_rsc()  argument
1268 	struct vxlan_info *vxi = link->l_info;  in rtnl_link_vxlan_get_rsc()
1270 	IS_VXLAN_LINK_ASSERT(link);  in rtnl_link_vxlan_get_rsc()
1280  * @arg link		Link object
1284 int rtnl_link_vxlan_enable_rsc(struct rtnl_link *link)  in rtnl_link_vxlan_enable_rsc()  argument
1286 	return rtnl_link_vxlan_set_rsc(link, 1);  in rtnl_link_vxlan_enable_rsc()
1291  * @arg link		Link object
1295 int rtnl_link_vxlan_disable_rsc(struct rtnl_link *link)  in rtnl_link_vxlan_disable_rsc()  argument
1297 	return rtnl_link_vxlan_set_rsc(link, 0);  in rtnl_link_vxlan_disable_rsc()
1302  * @arg link		Link object
1307 int rtnl_link_vxlan_set_l2miss(struct rtnl_link *link, uint8_t miss)  in rtnl_link_vxlan_set_l2miss()  argument
1309 	struct vxlan_info *vxi = link->l_info;  in rtnl_link_vxlan_set_l2miss()
1311 	IS_VXLAN_LINK_ASSERT(link);  in rtnl_link_vxlan_set_l2miss()
1321  * @arg link		Link object
1325 int rtnl_link_vxlan_get_l2miss(struct rtnl_link *link)  in rtnl_link_vxlan_get_l2miss()  argument
1327 	struct vxlan_info *vxi = link->l_info;  in rtnl_link_vxlan_get_l2miss()
1329 	IS_VXLAN_LINK_ASSERT(link);  in rtnl_link_vxlan_get_l2miss()
1339  * @arg link		Link object
1343 int rtnl_link_vxlan_enable_l2miss(struct rtnl_link *link)  in rtnl_link_vxlan_enable_l2miss()  argument
1345 	return rtnl_link_vxlan_set_l2miss(link, 1);  in rtnl_link_vxlan_enable_l2miss()
1350  * @arg link		Link object
1354 int rtnl_link_vxlan_disable_l2miss(struct rtnl_link *link)  in rtnl_link_vxlan_disable_l2miss()  argument
1356 	return rtnl_link_vxlan_set_l2miss(link, 0);  in rtnl_link_vxlan_disable_l2miss()
1361  * @arg link		Link object
1366 int rtnl_link_vxlan_set_l3miss(struct rtnl_link *link, uint8_t miss)  in rtnl_link_vxlan_set_l3miss()  argument
1368 	struct vxlan_info *vxi = link->l_info;  in rtnl_link_vxlan_set_l3miss()
1370 	IS_VXLAN_LINK_ASSERT(link);  in rtnl_link_vxlan_set_l3miss()
1380  * @arg link		Link object
1384 int rtnl_link_vxlan_get_l3miss(struct rtnl_link *link)  in rtnl_link_vxlan_get_l3miss()  argument
1386 	struct vxlan_info *vxi = link->l_info;  in rtnl_link_vxlan_get_l3miss()
1388 	IS_VXLAN_LINK_ASSERT(link);  in rtnl_link_vxlan_get_l3miss()
1398  * @arg link		Link object
1402 int rtnl_link_vxlan_enable_l3miss(struct rtnl_link *link)  in rtnl_link_vxlan_enable_l3miss()  argument
1404 	return rtnl_link_vxlan_set_l3miss(link, 1);  in rtnl_link_vxlan_enable_l3miss()
1409  * @arg link		Link object
1413 int rtnl_link_vxlan_disable_l3miss(struct rtnl_link *link)  in rtnl_link_vxlan_disable_l3miss()  argument
1415 	return rtnl_link_vxlan_set_l3miss(link, 0);  in rtnl_link_vxlan_disable_l3miss()
1420  * @arg link		Link object
1425 int rtnl_link_vxlan_set_port(struct rtnl_link *link, uint32_t port)  in rtnl_link_vxlan_set_port()  argument
1427 	struct vxlan_info *vxi = link->l_info;  in rtnl_link_vxlan_set_port()
1429 	IS_VXLAN_LINK_ASSERT(link);  in rtnl_link_vxlan_set_port()
1439  * @arg link		Link object
1444 int rtnl_link_vxlan_get_port(struct rtnl_link *link, uint32_t *port)  in rtnl_link_vxlan_get_port()  argument
1446 	struct vxlan_info *vxi = link->l_info;  in rtnl_link_vxlan_get_port()
1448 	IS_VXLAN_LINK_ASSERT(link);  in rtnl_link_vxlan_get_port()
1463  * @arg link		Link object
1468 int rtnl_link_vxlan_set_udp_csum(struct rtnl_link *link, uint8_t csum)  in rtnl_link_vxlan_set_udp_csum()  argument
1470 	struct vxlan_info *vxi = link->l_info;  in rtnl_link_vxlan_set_udp_csum()
1472 	IS_VXLAN_LINK_ASSERT(link);  in rtnl_link_vxlan_set_udp_csum()
1482  * @arg link		Link object
1486 int rtnl_link_vxlan_get_udp_csum(struct rtnl_link *link)  in rtnl_link_vxlan_get_udp_csum()  argument
1488 	struct vxlan_info *vxi = link->l_info;  in rtnl_link_vxlan_get_udp_csum()
1490 	IS_VXLAN_LINK_ASSERT(link);  in rtnl_link_vxlan_get_udp_csum()
1500  * @arg link		Link object
1505 int rtnl_link_vxlan_set_udp_zero_csum6_tx(struct rtnl_link *link, uint8_t csum)  in rtnl_link_vxlan_set_udp_zero_csum6_tx()  argument
1507 	struct vxlan_info *vxi = link->l_info;  in rtnl_link_vxlan_set_udp_zero_csum6_tx()
1509 	IS_VXLAN_LINK_ASSERT(link);  in rtnl_link_vxlan_set_udp_zero_csum6_tx()
1519  * @arg link		Link object
1523 int rtnl_link_vxlan_get_udp_zero_csum6_tx(struct rtnl_link *link)  in rtnl_link_vxlan_get_udp_zero_csum6_tx()  argument
1525 	struct vxlan_info *vxi = link->l_info;  in rtnl_link_vxlan_get_udp_zero_csum6_tx()
1527 	IS_VXLAN_LINK_ASSERT(link);  in rtnl_link_vxlan_get_udp_zero_csum6_tx()
1537  * @arg link		Link object
1542 int rtnl_link_vxlan_set_udp_zero_csum6_rx(struct rtnl_link *link, uint8_t csum)  in rtnl_link_vxlan_set_udp_zero_csum6_rx()  argument
1544 	struct vxlan_info *vxi = link->l_info;  in rtnl_link_vxlan_set_udp_zero_csum6_rx()
1546 	IS_VXLAN_LINK_ASSERT(link);  in rtnl_link_vxlan_set_udp_zero_csum6_rx()
1556  * @arg link		Link object
1560 int rtnl_link_vxlan_get_udp_zero_csum6_rx(struct rtnl_link *link)  in rtnl_link_vxlan_get_udp_zero_csum6_rx()  argument
1562 	struct vxlan_info *vxi = link->l_info;  in rtnl_link_vxlan_get_udp_zero_csum6_rx()
1564 	IS_VXLAN_LINK_ASSERT(link);  in rtnl_link_vxlan_get_udp_zero_csum6_rx()
1574  * @arg link		Link object
1579 int rtnl_link_vxlan_set_remcsum_tx(struct rtnl_link *link, uint8_t csum)  in rtnl_link_vxlan_set_remcsum_tx()  argument
1581 	struct vxlan_info *vxi = link->l_info;  in rtnl_link_vxlan_set_remcsum_tx()
1583 	IS_VXLAN_LINK_ASSERT(link);  in rtnl_link_vxlan_set_remcsum_tx()
1593  * @arg link		Link object
1597 int rtnl_link_vxlan_get_remcsum_tx(struct rtnl_link *link)  in rtnl_link_vxlan_get_remcsum_tx()  argument
1599 	struct vxlan_info *vxi = link->l_info;  in rtnl_link_vxlan_get_remcsum_tx()
1601 	IS_VXLAN_LINK_ASSERT(link);  in rtnl_link_vxlan_get_remcsum_tx()
1611  * @arg link		Link object
1616 int rtnl_link_vxlan_set_remcsum_rx(struct rtnl_link *link, uint8_t csum)  in rtnl_link_vxlan_set_remcsum_rx()  argument
1618 	struct vxlan_info *vxi = link->l_info;  in rtnl_link_vxlan_set_remcsum_rx()
1620 	IS_VXLAN_LINK_ASSERT(link);  in rtnl_link_vxlan_set_remcsum_rx()
1630  * @arg link		Link object
1634 int rtnl_link_vxlan_get_remcsum_rx(struct rtnl_link *link)  in rtnl_link_vxlan_get_remcsum_rx()  argument
1636 	struct vxlan_info *vxi = link->l_info;  in rtnl_link_vxlan_get_remcsum_rx()
1638 	IS_VXLAN_LINK_ASSERT(link);  in rtnl_link_vxlan_get_remcsum_rx()
1648  * @arg link		Link object
1653 int rtnl_link_vxlan_set_collect_metadata(struct rtnl_link *link, uint8_t collect)  in rtnl_link_vxlan_set_collect_metadata()  argument
1655 	struct vxlan_info *vxi = link->l_info;  in rtnl_link_vxlan_set_collect_metadata()
1657 	IS_VXLAN_LINK_ASSERT(link);  in rtnl_link_vxlan_set_collect_metadata()
1667  * @arg link		Link object
1671 int rtnl_link_vxlan_get_collect_metadata(struct rtnl_link *link)  in rtnl_link_vxlan_get_collect_metadata()  argument
1673 	struct vxlan_info *vxi = link->l_info;  in rtnl_link_vxlan_get_collect_metadata()
1675 	IS_VXLAN_LINK_ASSERT(link);  in rtnl_link_vxlan_get_collect_metadata()
1685  * @arg link		Link object
1690 int rtnl_link_vxlan_set_label(struct rtnl_link *link, uint32_t label)  in rtnl_link_vxlan_set_label()  argument
1692 	struct vxlan_info *vxi = link->l_info;  in rtnl_link_vxlan_set_label()
1694 	IS_VXLAN_LINK_ASSERT(link);  in rtnl_link_vxlan_set_label()
1704  * @arg link		Link object
1709 int rtnl_link_vxlan_get_label(struct rtnl_link *link, uint32_t *label)  in rtnl_link_vxlan_get_label()  argument
1711 	struct vxlan_info *vxi = link->l_info;  in rtnl_link_vxlan_get_label()
1713 	IS_VXLAN_LINK_ASSERT(link);  in rtnl_link_vxlan_get_label()
1728  * @arg link		Link object
1734 int rtnl_link_vxlan_set_flags(struct rtnl_link *link, uint32_t flags, int enable)  in rtnl_link_vxlan_set_flags()  argument
1736 	struct vxlan_info *vxi = link->l_info;  in rtnl_link_vxlan_set_flags()
1738 	IS_VXLAN_LINK_ASSERT(link);  in rtnl_link_vxlan_set_flags()
1753  * @arg link		Link object
1758 int rtnl_link_vxlan_get_flags(struct rtnl_link *link, uint32_t *out_flags)  in rtnl_link_vxlan_get_flags()  argument
1760 	struct vxlan_info *vxi = link->l_info;  in rtnl_link_vxlan_get_flags()
1762 	IS_VXLAN_LINK_ASSERT(link);  in rtnl_link_vxlan_get_flags()