2  * lib/route/link/vxlan.c	VXLAN Link Info
13  * @ingroup link
15  * Virtual eXtensible Local Area Network link module
18  * \b Link Type Name: "vxlan"
31 #include <netlink-private/route/link/api.h>
32 #include <netlink/route/link/vxlan.h>
125 static int vxlan_alloc(struct rtnl_link *link)  in vxlan_alloc()  argument
129 	if (link->l_info)  in vxlan_alloc()
130 		memset(link->l_info, 0, sizeof(*vxi));  in vxlan_alloc()
135 		link->l_info = vxi;  in vxlan_alloc()
141 static int vxlan_parse(struct rtnl_link *link, struct nlattr *data,  in vxlan_parse()  argument
148 	NL_DBG(3, "Parsing VXLAN link info\n");  in vxlan_parse()
153 	if ((err = vxlan_alloc(link)) < 0)  in vxlan_parse()
156 	vxi = link->l_info;  in vxlan_parse()
300 static void vxlan_free(struct rtnl_link *link)  in vxlan_free()  argument
302 	struct vxlan_info *vxi = link->l_info;  in vxlan_free()
305 	link->l_info = NULL;  in vxlan_free()
308 static void vxlan_dump_line(struct rtnl_link *link, struct nl_dump_params *p)  in vxlan_dump_line()  argument
310 	struct vxlan_info *vxi = link->l_info;  in vxlan_dump_line()
315 static void vxlan_dump_details(struct rtnl_link *link, struct nl_dump_params *p)  in vxlan_dump_details()  argument
317 	struct vxlan_info *vxi = link->l_info;  in vxlan_dump_details()
338 		nl_dump(p, "      link ");  in vxlan_dump_details()
341 		parent = link_lookup(link->ce_cache, vxi->vxi_link);  in vxlan_dump_details()
529 static int vxlan_put_attrs(struct nl_msg *msg, struct rtnl_link *link)  in vxlan_put_attrs()  argument
531 	struct vxlan_info *vxi = link->l_info;  in vxlan_put_attrs()
638 	diff |= VXLAN_DIFF(LINK,  a->vxi_link  != b->vxi_link);  in vxlan_compare()
684 #define IS_VXLAN_LINK_ASSERT(link) \  argument
685 	if ((link)->l_info_ops != &vxlan_info_ops) { \
686 		APPBUG("Link is not a vxlan link. set type \"vxlan\" first."); \
697  * Allocate link object of type VXLAN
699  * @return Allocated link object or NULL.
703 	struct rtnl_link *link;  in rtnl_link_vxlan_alloc()  local
706 	if (!(link = rtnl_link_alloc()))  in rtnl_link_vxlan_alloc()
709 	if ((err = rtnl_link_set_type(link, "vxlan")) < 0) {  in rtnl_link_vxlan_alloc()
710 		rtnl_link_put(link);  in rtnl_link_vxlan_alloc()
714 	return link;  in rtnl_link_vxlan_alloc()
718  * Check if link is a VXLAN link
719  * @arg link		Link object
721  * @return True if link is a VXLAN link, otherwise false is returned.
723 int rtnl_link_is_vxlan(struct rtnl_link *link)  in rtnl_link_is_vxlan()  argument
725 	return link->l_info_ops && !strcmp(link->l_info_ops->io_name, "vxlan");  in rtnl_link_is_vxlan()
730  * @arg link		Link object
735 int rtnl_link_vxlan_set_id(struct rtnl_link *link, uint32_t id)  in rtnl_link_vxlan_set_id()  argument
737 	struct vxlan_info *vxi = link->l_info;  in rtnl_link_vxlan_set_id()
739 	IS_VXLAN_LINK_ASSERT(link);  in rtnl_link_vxlan_set_id()
752  * @arg link		Link object
757 int rtnl_link_vxlan_get_id(struct rtnl_link *link, uint32_t *id)  in rtnl_link_vxlan_get_id()  argument
759 	struct vxlan_info *vxi = link->l_info;  in rtnl_link_vxlan_get_id()
761 	IS_VXLAN_LINK_ASSERT(link);  in rtnl_link_vxlan_get_id()
776  * @arg link		Link object
781 int rtnl_link_vxlan_set_group(struct rtnl_link *link, struct nl_addr *addr)  in rtnl_link_vxlan_set_group()  argument
783 	struct vxlan_info *vxi = link->l_info;  in rtnl_link_vxlan_set_group()
785 	IS_VXLAN_LINK_ASSERT(link);  in rtnl_link_vxlan_set_group()
807  * @arg link		Link object
812 int rtnl_link_vxlan_get_group(struct rtnl_link *link, struct nl_addr **addr)  in rtnl_link_vxlan_get_group()  argument
814 	struct vxlan_info *vxi = link->l_info;  in rtnl_link_vxlan_get_group()
816 	IS_VXLAN_LINK_ASSERT(link);  in rtnl_link_vxlan_get_group()
833  * @arg link		Link object
838 int rtnl_link_vxlan_set_link(struct rtnl_link *link, uint32_t index)  in rtnl_link_vxlan_set_link()  argument
840 	struct vxlan_info *vxi = link->l_info;  in rtnl_link_vxlan_set_link()
842 	IS_VXLAN_LINK_ASSERT(link);  in rtnl_link_vxlan_set_link()
852  * @arg link		Link object
857 int rtnl_link_vxlan_get_link(struct rtnl_link *link, uint32_t *index)  in rtnl_link_vxlan_get_link()  argument
859 	struct vxlan_info *vxi = link->l_info;  in rtnl_link_vxlan_get_link()
861 	IS_VXLAN_LINK_ASSERT(link);  in rtnl_link_vxlan_get_link()
876  * @arg link		Link object
881 int rtnl_link_vxlan_set_local(struct rtnl_link *link, struct nl_addr *addr)  in rtnl_link_vxlan_set_local()  argument
883 	struct vxlan_info *vxi = link->l_info;  in rtnl_link_vxlan_set_local()
885 	IS_VXLAN_LINK_ASSERT(link);  in rtnl_link_vxlan_set_local()
907  * @arg link		Link object
912 int rtnl_link_vxlan_get_local(struct rtnl_link *link, struct nl_addr **addr)  in rtnl_link_vxlan_get_local()  argument
914 	struct vxlan_info *vxi = link->l_info;  in rtnl_link_vxlan_get_local()
916 	IS_VXLAN_LINK_ASSERT(link);  in rtnl_link_vxlan_get_local()
933  * @arg link		Link object
938 int rtnl_link_vxlan_set_ttl(struct rtnl_link *link, uint8_t ttl)  in rtnl_link_vxlan_set_ttl()  argument
940 	struct vxlan_info *vxi = link->l_info;  in rtnl_link_vxlan_set_ttl()
942 	IS_VXLAN_LINK_ASSERT(link);  in rtnl_link_vxlan_set_ttl()
952  * @arg link		Link object
956 int rtnl_link_vxlan_get_ttl(struct rtnl_link *link)  in rtnl_link_vxlan_get_ttl()  argument
958 	struct vxlan_info *vxi = link->l_info;  in rtnl_link_vxlan_get_ttl()
960 	IS_VXLAN_LINK_ASSERT(link);  in rtnl_link_vxlan_get_ttl()
970  * @arg link		Link object
975 int rtnl_link_vxlan_set_tos(struct rtnl_link *link, uint8_t tos)  in rtnl_link_vxlan_set_tos()  argument
977 	struct vxlan_info *vxi = link->l_info;  in rtnl_link_vxlan_set_tos()
979 	IS_VXLAN_LINK_ASSERT(link);  in rtnl_link_vxlan_set_tos()
989  * @arg link		Link object
993 int rtnl_link_vxlan_get_tos(struct rtnl_link *link)  in rtnl_link_vxlan_get_tos()  argument
995 	struct vxlan_info *vxi = link->l_info;  in rtnl_link_vxlan_get_tos()
997 	IS_VXLAN_LINK_ASSERT(link);  in rtnl_link_vxlan_get_tos()
1007  * @arg link		Link object
1012 int rtnl_link_vxlan_set_learning(struct rtnl_link *link, uint8_t learning)  in rtnl_link_vxlan_set_learning()  argument
1014 	struct vxlan_info *vxi = link->l_info;  in rtnl_link_vxlan_set_learning()
1016 	IS_VXLAN_LINK_ASSERT(link);  in rtnl_link_vxlan_set_learning()
1026  * @arg link		Link object
1030 int rtnl_link_vxlan_get_learning(struct rtnl_link *link)  in rtnl_link_vxlan_get_learning()  argument
1032 	struct vxlan_info *vxi = link->l_info;  in rtnl_link_vxlan_get_learning()
1034 	IS_VXLAN_LINK_ASSERT(link);  in rtnl_link_vxlan_get_learning()
1044  * @arg link		Link object
1048 int rtnl_link_vxlan_enable_learning(struct rtnl_link *link)  in rtnl_link_vxlan_enable_learning()  argument
1050 	return rtnl_link_vxlan_set_learning(link, 1);  in rtnl_link_vxlan_enable_learning()
1055  * @arg link		Link object
1059 int rtnl_link_vxlan_disable_learning(struct rtnl_link *link)  in rtnl_link_vxlan_disable_learning()  argument
1061 	return rtnl_link_vxlan_set_learning(link, 0);  in rtnl_link_vxlan_disable_learning()
1066  * @arg link		Link object
1071 int rtnl_link_vxlan_set_ageing(struct rtnl_link *link, uint32_t expiry)  in rtnl_link_vxlan_set_ageing()  argument
1073 	struct vxlan_info *vxi = link->l_info;  in rtnl_link_vxlan_set_ageing()
1075 	IS_VXLAN_LINK_ASSERT(link);  in rtnl_link_vxlan_set_ageing()
1085  * @arg link		Link object
1090 int rtnl_link_vxlan_get_ageing(struct rtnl_link *link, uint32_t *expiry)  in rtnl_link_vxlan_get_ageing()  argument
1092 	struct vxlan_info *vxi = link->l_info;  in rtnl_link_vxlan_get_ageing()
1094 	IS_VXLAN_LINK_ASSERT(link);  in rtnl_link_vxlan_get_ageing()
1109  * @arg link		Link object
1114 int rtnl_link_vxlan_set_limit(struct rtnl_link *link, uint32_t limit)  in rtnl_link_vxlan_set_limit()  argument
1116 	struct vxlan_info *vxi = link->l_info;  in rtnl_link_vxlan_set_limit()
1118 	IS_VXLAN_LINK_ASSERT(link);  in rtnl_link_vxlan_set_limit()
1128  * @arg link		Link object
1133 int rtnl_link_vxlan_get_limit(struct rtnl_link *link, uint32_t *limit)  in rtnl_link_vxlan_get_limit()  argument
1135 	struct vxlan_info *vxi = link->l_info;  in rtnl_link_vxlan_get_limit()
1137 	IS_VXLAN_LINK_ASSERT(link);  in rtnl_link_vxlan_get_limit()
1152  * @arg link		Link object
1157 int rtnl_link_vxlan_set_port_range(struct rtnl_link *link,  in rtnl_link_vxlan_set_port_range()  argument
1160 	struct vxlan_info *vxi = link->l_info;  in rtnl_link_vxlan_set_port_range()
1162 	IS_VXLAN_LINK_ASSERT(link);  in rtnl_link_vxlan_set_port_range()
1175  * @arg link		Link object
1180 int rtnl_link_vxlan_get_port_range(struct rtnl_link *link,  in rtnl_link_vxlan_get_port_range()  argument
1183 	struct vxlan_info *vxi = link->l_info;  in rtnl_link_vxlan_get_port_range()
1185 	IS_VXLAN_LINK_ASSERT(link);  in rtnl_link_vxlan_get_port_range()
1200  * @arg link		Link object
1205 int rtnl_link_vxlan_set_proxy(struct rtnl_link *link, uint8_t proxy)  in rtnl_link_vxlan_set_proxy()  argument
1207 	struct vxlan_info *vxi = link->l_info;  in rtnl_link_vxlan_set_proxy()
1209 	IS_VXLAN_LINK_ASSERT(link);  in rtnl_link_vxlan_set_proxy()
1219  * @arg link		Link object
1223 int rtnl_link_vxlan_get_proxy(struct rtnl_link *link)  in rtnl_link_vxlan_get_proxy()  argument
1225 	struct vxlan_info *vxi = link->l_info;  in rtnl_link_vxlan_get_proxy()
1227 	IS_VXLAN_LINK_ASSERT(link);  in rtnl_link_vxlan_get_proxy()
1237  * @arg link		Link object
1241 int rtnl_link_vxlan_enable_proxy(struct rtnl_link *link)  in rtnl_link_vxlan_enable_proxy()  argument
1243 	return rtnl_link_vxlan_set_proxy(link, 1);  in rtnl_link_vxlan_enable_proxy()
1248  * @arg link		Link object
1252 int rtnl_link_vxlan_disable_proxy(struct rtnl_link *link)  in rtnl_link_vxlan_disable_proxy()  argument
1254 	return rtnl_link_vxlan_set_proxy(link, 0);  in rtnl_link_vxlan_disable_proxy()
1259  * @arg link		Link object
1264 int rtnl_link_vxlan_set_rsc(struct rtnl_link *link, uint8_t rsc)  in rtnl_link_vxlan_set_rsc()  argument
1266 	struct vxlan_info *vxi = link->l_info;  in rtnl_link_vxlan_set_rsc()
1268 	IS_VXLAN_LINK_ASSERT(link);  in rtnl_link_vxlan_set_rsc()
1278  * @arg link		Link object
1282 int rtnl_link_vxlan_get_rsc(struct rtnl_link *link)  in rtnl_link_vxlan_get_rsc()  argument
1284 	struct vxlan_info *vxi = link->l_info;  in rtnl_link_vxlan_get_rsc()
1286 	IS_VXLAN_LINK_ASSERT(link);  in rtnl_link_vxlan_get_rsc()
1296  * @arg link		Link object
1300 int rtnl_link_vxlan_enable_rsc(struct rtnl_link *link)  in rtnl_link_vxlan_enable_rsc()  argument
1302 	return rtnl_link_vxlan_set_rsc(link, 1);  in rtnl_link_vxlan_enable_rsc()
1307  * @arg link		Link object
1311 int rtnl_link_vxlan_disable_rsc(struct rtnl_link *link)  in rtnl_link_vxlan_disable_rsc()  argument
1313 	return rtnl_link_vxlan_set_rsc(link, 0);  in rtnl_link_vxlan_disable_rsc()
1318  * @arg link		Link object
1323 int rtnl_link_vxlan_set_l2miss(struct rtnl_link *link, uint8_t miss)  in rtnl_link_vxlan_set_l2miss()  argument
1325 	struct vxlan_info *vxi = link->l_info;  in rtnl_link_vxlan_set_l2miss()
1327 	IS_VXLAN_LINK_ASSERT(link);  in rtnl_link_vxlan_set_l2miss()
1337  * @arg link		Link object
1341 int rtnl_link_vxlan_get_l2miss(struct rtnl_link *link)  in rtnl_link_vxlan_get_l2miss()  argument
1343 	struct vxlan_info *vxi = link->l_info;  in rtnl_link_vxlan_get_l2miss()
1345 	IS_VXLAN_LINK_ASSERT(link);  in rtnl_link_vxlan_get_l2miss()
1355  * @arg link		Link object
1359 int rtnl_link_vxlan_enable_l2miss(struct rtnl_link *link)  in rtnl_link_vxlan_enable_l2miss()  argument
1361 	return rtnl_link_vxlan_set_l2miss(link, 1);  in rtnl_link_vxlan_enable_l2miss()
1366  * @arg link		Link object
1370 int rtnl_link_vxlan_disable_l2miss(struct rtnl_link *link)  in rtnl_link_vxlan_disable_l2miss()  argument
1372 	return rtnl_link_vxlan_set_l2miss(link, 0);  in rtnl_link_vxlan_disable_l2miss()
1377  * @arg link		Link object
1382 int rtnl_link_vxlan_set_l3miss(struct rtnl_link *link, uint8_t miss)  in rtnl_link_vxlan_set_l3miss()  argument
1384 	struct vxlan_info *vxi = link->l_info;  in rtnl_link_vxlan_set_l3miss()
1386 	IS_VXLAN_LINK_ASSERT(link);  in rtnl_link_vxlan_set_l3miss()
1396  * @arg link		Link object
1400 int rtnl_link_vxlan_get_l3miss(struct rtnl_link *link)  in rtnl_link_vxlan_get_l3miss()  argument
1402 	struct vxlan_info *vxi = link->l_info;  in rtnl_link_vxlan_get_l3miss()
1404 	IS_VXLAN_LINK_ASSERT(link);  in rtnl_link_vxlan_get_l3miss()
1414  * @arg link		Link object
1418 int rtnl_link_vxlan_enable_l3miss(struct rtnl_link *link)  in rtnl_link_vxlan_enable_l3miss()  argument
1420 	return rtnl_link_vxlan_set_l3miss(link, 1);  in rtnl_link_vxlan_enable_l3miss()
1425  * @arg link		Link object
1429 int rtnl_link_vxlan_disable_l3miss(struct rtnl_link *link)  in rtnl_link_vxlan_disable_l3miss()  argument
1431 	return rtnl_link_vxlan_set_l3miss(link, 0);  in rtnl_link_vxlan_disable_l3miss()
1436  * @arg link		Link object
1441 int rtnl_link_vxlan_set_port(struct rtnl_link *link, uint32_t port)  in rtnl_link_vxlan_set_port()  argument
1443 	struct vxlan_info *vxi = link->l_info;  in rtnl_link_vxlan_set_port()
1445 	IS_VXLAN_LINK_ASSERT(link);  in rtnl_link_vxlan_set_port()
1455  * @arg link		Link object
1460 int rtnl_link_vxlan_get_port(struct rtnl_link *link, uint32_t *port)  in rtnl_link_vxlan_get_port()  argument
1462 	struct vxlan_info *vxi = link->l_info;  in rtnl_link_vxlan_get_port()
1464 	IS_VXLAN_LINK_ASSERT(link);  in rtnl_link_vxlan_get_port()
1479  * @arg link		Link object
1484 int rtnl_link_vxlan_set_udp_csum(struct rtnl_link *link, uint8_t csum)  in rtnl_link_vxlan_set_udp_csum()  argument
1486 	struct vxlan_info *vxi = link->l_info;  in rtnl_link_vxlan_set_udp_csum()
1488 	IS_VXLAN_LINK_ASSERT(link);  in rtnl_link_vxlan_set_udp_csum()
1498  * @arg link		Link object
1502 int rtnl_link_vxlan_get_udp_csum(struct rtnl_link *link)  in rtnl_link_vxlan_get_udp_csum()  argument
1504 	struct vxlan_info *vxi = link->l_info;  in rtnl_link_vxlan_get_udp_csum()
1506 	IS_VXLAN_LINK_ASSERT(link);  in rtnl_link_vxlan_get_udp_csum()
1516  * @arg link		Link object
1521 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
1523 	struct vxlan_info *vxi = link->l_info;  in rtnl_link_vxlan_set_udp_zero_csum6_tx()
1525 	IS_VXLAN_LINK_ASSERT(link);  in rtnl_link_vxlan_set_udp_zero_csum6_tx()
1535  * @arg link		Link object
1539 int rtnl_link_vxlan_get_udp_zero_csum6_tx(struct rtnl_link *link)  in rtnl_link_vxlan_get_udp_zero_csum6_tx()  argument
1541 	struct vxlan_info *vxi = link->l_info;  in rtnl_link_vxlan_get_udp_zero_csum6_tx()
1543 	IS_VXLAN_LINK_ASSERT(link);  in rtnl_link_vxlan_get_udp_zero_csum6_tx()
1553  * @arg link		Link object
1558 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
1560 	struct vxlan_info *vxi = link->l_info;  in rtnl_link_vxlan_set_udp_zero_csum6_rx()
1562 	IS_VXLAN_LINK_ASSERT(link);  in rtnl_link_vxlan_set_udp_zero_csum6_rx()
1572  * @arg link		Link object
1576 int rtnl_link_vxlan_get_udp_zero_csum6_rx(struct rtnl_link *link)  in rtnl_link_vxlan_get_udp_zero_csum6_rx()  argument
1578 	struct vxlan_info *vxi = link->l_info;  in rtnl_link_vxlan_get_udp_zero_csum6_rx()
1580 	IS_VXLAN_LINK_ASSERT(link);  in rtnl_link_vxlan_get_udp_zero_csum6_rx()
1590  * @arg link		Link object
1595 int rtnl_link_vxlan_set_remcsum_tx(struct rtnl_link *link, uint8_t csum)  in rtnl_link_vxlan_set_remcsum_tx()  argument
1597 	struct vxlan_info *vxi = link->l_info;  in rtnl_link_vxlan_set_remcsum_tx()
1599 	IS_VXLAN_LINK_ASSERT(link);  in rtnl_link_vxlan_set_remcsum_tx()
1609  * @arg link		Link object
1613 int rtnl_link_vxlan_get_remcsum_tx(struct rtnl_link *link)  in rtnl_link_vxlan_get_remcsum_tx()  argument
1615 	struct vxlan_info *vxi = link->l_info;  in rtnl_link_vxlan_get_remcsum_tx()
1617 	IS_VXLAN_LINK_ASSERT(link);  in rtnl_link_vxlan_get_remcsum_tx()
1627  * @arg link		Link object
1632 int rtnl_link_vxlan_set_remcsum_rx(struct rtnl_link *link, uint8_t csum)  in rtnl_link_vxlan_set_remcsum_rx()  argument
1634 	struct vxlan_info *vxi = link->l_info;  in rtnl_link_vxlan_set_remcsum_rx()
1636 	IS_VXLAN_LINK_ASSERT(link);  in rtnl_link_vxlan_set_remcsum_rx()
1646  * @arg link		Link object
1650 int rtnl_link_vxlan_get_remcsum_rx(struct rtnl_link *link)  in rtnl_link_vxlan_get_remcsum_rx()  argument
1652 	struct vxlan_info *vxi = link->l_info;  in rtnl_link_vxlan_get_remcsum_rx()
1654 	IS_VXLAN_LINK_ASSERT(link);  in rtnl_link_vxlan_get_remcsum_rx()
1664  * @arg link		Link object
1669 int rtnl_link_vxlan_set_collect_metadata(struct rtnl_link *link, uint8_t collect)  in rtnl_link_vxlan_set_collect_metadata()  argument
1671 	struct vxlan_info *vxi = link->l_info;  in rtnl_link_vxlan_set_collect_metadata()
1673 	IS_VXLAN_LINK_ASSERT(link);  in rtnl_link_vxlan_set_collect_metadata()
1683  * @arg link		Link object
1687 int rtnl_link_vxlan_get_collect_metadata(struct rtnl_link *link)  in rtnl_link_vxlan_get_collect_metadata()  argument
1689 	struct vxlan_info *vxi = link->l_info;  in rtnl_link_vxlan_get_collect_metadata()
1691 	IS_VXLAN_LINK_ASSERT(link);  in rtnl_link_vxlan_get_collect_metadata()
1701  * @arg link		Link object
1706 int rtnl_link_vxlan_set_label(struct rtnl_link *link, uint32_t label)  in rtnl_link_vxlan_set_label()  argument
1708 	struct vxlan_info *vxi = link->l_info;  in rtnl_link_vxlan_set_label()
1710 	IS_VXLAN_LINK_ASSERT(link);  in rtnl_link_vxlan_set_label()
1720  * @arg link		Link object
1725 int rtnl_link_vxlan_get_label(struct rtnl_link *link, uint32_t *label)  in rtnl_link_vxlan_get_label()  argument
1727 	struct vxlan_info *vxi = link->l_info;  in rtnl_link_vxlan_get_label()
1729 	IS_VXLAN_LINK_ASSERT(link);  in rtnl_link_vxlan_get_label()
1744  * @arg link		Link object
1750 int rtnl_link_vxlan_set_flags(struct rtnl_link *link, uint32_t flags, int enable)  in rtnl_link_vxlan_set_flags()  argument
1752 	struct vxlan_info *vxi = link->l_info;  in rtnl_link_vxlan_set_flags()
1754 	IS_VXLAN_LINK_ASSERT(link);  in rtnl_link_vxlan_set_flags()
1769  * @arg link		Link object
1774 int rtnl_link_vxlan_get_flags(struct rtnl_link *link, uint32_t *out_flags)  in rtnl_link_vxlan_get_flags()  argument
1776 	struct vxlan_info *vxi = link->l_info;  in rtnl_link_vxlan_get_flags()
1778 	IS_VXLAN_LINK_ASSERT(link);  in rtnl_link_vxlan_get_flags()