[mirror_iproute2.git] / ip / iplink_vxlan.c

/*
 * iplink_vxlan.c	VXLAN device support
 *
 *              This program is free software; you can redistribute it and/or
 *              modify it under the terms of the GNU General Public License
 *              as published by the Free Software Foundation; either version
 *              2 of the License, or (at your option) any later version.
 *
 * Authors:     Stephen Hemminger <shemminger@vyatta.com
 */

#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include <net/if.h>
#include <linux/ip.h>
#include <linux/if_link.h>
#include <arpa/inet.h>

#include "rt_names.h"
#include "utils.h"
#include "ip_common.h"

static void print_explain(FILE *f)
{
	fprintf(f, "Usage: ... vxlan id VNI [ { group | remote } IP_ADDRESS ] [ local ADDR ]\n");
	fprintf(f, "                 [ ttl TTL ] [ tos TOS ] [ flowlabel LABEL ] [ dev PHYS_DEV ]\n");
	fprintf(f, "                 [ dstport PORT ] [ srcport MIN MAX ]\n");
	fprintf(f, "                 [ [no]learning ] [ [no]proxy ] [ [no]rsc ]\n");
	fprintf(f, "                 [ [no]l2miss ] [ [no]l3miss ]\n");
	fprintf(f, "                 [ ageing SECONDS ] [ maxaddress NUMBER ]\n");
	fprintf(f, "                 [ [no]udpcsum ] [ [no]udp6zerocsumtx ] [ [no]udp6zerocsumrx ]\n");
	fprintf(f, "                 [ [no]remcsumtx ] [ [no]remcsumrx ]\n");
	fprintf(f, "                 [ [no]external ] [ gbp ] [ gpe ]\n");
	fprintf(f, "\n");
	fprintf(f, "Where: VNI   := 0-16777215\n");
	fprintf(f, "       ADDR  := { IP_ADDRESS | any }\n");
	fprintf(f, "       TOS   := { NUMBER | inherit }\n");
	fprintf(f, "       TTL   := { 1..255 | inherit }\n");
	fprintf(f, "       LABEL := 0-1048575\n");
}

static void explain(void)
{
	print_explain(stderr);
}

static int vxlan_parse_opt(struct link_util *lu, int argc, char **argv,
			  struct nlmsghdr *n)
{
	__u32 vni = 0;
	int vni_set = 0;
	__u32 saddr = 0;
	__u32 gaddr = 0;
	__u32 daddr = 0;
	struct in6_addr saddr6 = IN6ADDR_ANY_INIT;
	struct in6_addr gaddr6 = IN6ADDR_ANY_INIT;
	struct in6_addr daddr6 = IN6ADDR_ANY_INIT;
	unsigned int link = 0;
	__u8 tos = 0;
	__u8 ttl = 0;
	__u32 label = 0;
	__u8 learning = 1;
	__u8 proxy = 0;
	__u8 rsc = 0;
	__u8 l2miss = 0;
	__u8 l3miss = 0;
	__u8 noage = 0;
	__u32 age = 0;
	__u32 maxaddr = 0;
	__u16 dstport = 0;
	__u8 udpcsum = 0;
	bool udpcsum_set = false;
	__u8 udp6zerocsumtx = 0;
	bool udp6zerocsumtx_set = false;
	__u8 udp6zerocsumrx = 0;
	bool udp6zerocsumrx_set = false;
	__u8 remcsumtx = 0;
	__u8 remcsumrx = 0;
	__u8 metadata = 0;
	__u8 gbp = 0;
	__u8 gpe = 0;
	int dst_port_set = 0;
	struct ifla_vxlan_port_range range = { 0, 0 };

	while (argc > 0) {
		if (!matches(*argv, "id") ||
		    !matches(*argv, "vni")) {
			NEXT_ARG();
			if (get_u32(&vni, *argv, 0) ||
			    vni >= 1u << 24)
				invarg("invalid id", *argv);
			vni_set = 1;
		} else if (!matches(*argv, "group")) {
			NEXT_ARG();
			if (!inet_get_addr(*argv, &gaddr, &gaddr6)) {
				fprintf(stderr, "Invalid address \"%s\"\n", *argv);
				return -1;
			}
			if (!IN6_IS_ADDR_MULTICAST(&gaddr6) && !IN_MULTICAST(ntohl(gaddr)))
				invarg("invalid group address", *argv);
		} else if (!matches(*argv, "remote")) {
			NEXT_ARG();
			if (!inet_get_addr(*argv, &daddr, &daddr6)) {
				fprintf(stderr, "Invalid address \"%s\"\n", *argv);
				return -1;
			}
			if (IN6_IS_ADDR_MULTICAST(&daddr6) || IN_MULTICAST(ntohl(daddr)))
				invarg("invalid remote address", *argv);
		} else if (!matches(*argv, "local")) {
			NEXT_ARG();
			if (strcmp(*argv, "any")) {
				if (!inet_get_addr(*argv, &saddr, &saddr6)) {
					fprintf(stderr, "Invalid address \"%s\"\n", *argv);
					return -1;
				}
			}

			if (IN_MULTICAST(ntohl(saddr)) || IN6_IS_ADDR_MULTICAST(&saddr6))
				invarg("invalid local address", *argv);
		} else if (!matches(*argv, "dev")) {
			NEXT_ARG();
			link = if_nametoindex(*argv);
			if (link == 0) {
				fprintf(stderr, "Cannot find device \"%s\"\n",
					*argv);
				exit(-1);
			}
		} else if (!matches(*argv, "ttl") ||
			   !matches(*argv, "hoplimit")) {
			unsigned int uval;

			NEXT_ARG();
			if (strcmp(*argv, "inherit") != 0) {
				if (get_unsigned(&uval, *argv, 0))
					invarg("invalid TTL", *argv);
				if (uval > 255)
					invarg("TTL must be <= 255", *argv);
				ttl = uval;
			}
		} else if (!matches(*argv, "tos") ||
			   !matches(*argv, "dsfield")) {
			__u32 uval;

			NEXT_ARG();
			if (strcmp(*argv, "inherit") != 0) {
				if (rtnl_dsfield_a2n(&uval, *argv))
					invarg("bad TOS value", *argv);
				tos = uval;
			} else
				tos = 1;
		} else if (!matches(*argv, "label") ||
			   !matches(*argv, "flowlabel")) {
			__u32 uval;

			NEXT_ARG();
			if (get_u32(&uval, *argv, 0) ||
			    (uval & ~LABEL_MAX_MASK))
				invarg("invalid flowlabel", *argv);
			label = htonl(uval);
		} else if (!matches(*argv, "ageing")) {
			NEXT_ARG();
			if (strcmp(*argv, "none") == 0)
				noage = 1;
			else if (get_u32(&age, *argv, 0))
				invarg("ageing timer", *argv);
		} else if (!matches(*argv, "maxaddress")) {
			NEXT_ARG();
			if (strcmp(*argv, "unlimited") == 0)
				maxaddr = 0;
			else if (get_u32(&maxaddr, *argv, 0))
				invarg("max addresses", *argv);
		} else if (!matches(*argv, "port") ||
			   !matches(*argv, "srcport")) {
			NEXT_ARG();
			if (get_be16(&range.low, *argv, 0))
				invarg("min port", *argv);
			NEXT_ARG();
			if (get_be16(&range.high, *argv, 0))
				invarg("max port", *argv);
		} else if (!matches(*argv, "dstport")) {
			NEXT_ARG();
			if (get_u16(&dstport, *argv, 0))
				invarg("dst port", *argv);
			dst_port_set = 1;
		} else if (!matches(*argv, "nolearning")) {
			learning = 0;
		} else if (!matches(*argv, "learning")) {
			learning = 1;
		} else if (!matches(*argv, "noproxy")) {
			proxy = 0;
		} else if (!matches(*argv, "proxy")) {
			proxy = 1;
		} else if (!matches(*argv, "norsc")) {
			rsc = 0;
		} else if (!matches(*argv, "rsc")) {
			rsc = 1;
		} else if (!matches(*argv, "nol2miss")) {
			l2miss = 0;
		} else if (!matches(*argv, "l2miss")) {
			l2miss = 1;
		} else if (!matches(*argv, "nol3miss")) {
			l3miss = 0;
		} else if (!matches(*argv, "l3miss")) {
			l3miss = 1;
		} else if (!matches(*argv, "udpcsum")) {
			udpcsum = 1;
			udpcsum_set = true;
		} else if (!matches(*argv, "noudpcsum")) {
			udpcsum = 0;
			udpcsum_set = true;
		} else if (!matches(*argv, "udp6zerocsumtx")) {
			udp6zerocsumtx = 1;
			udp6zerocsumtx_set = true;
		} else if (!matches(*argv, "noudp6zerocsumtx")) {
			udp6zerocsumtx = 0;
			udp6zerocsumtx_set = true;
		} else if (!matches(*argv, "udp6zerocsumrx")) {
			udp6zerocsumrx = 1;
			udp6zerocsumrx_set = true;
		} else if (!matches(*argv, "noudp6zerocsumrx")) {
			udp6zerocsumrx = 0;
			udp6zerocsumrx_set = true;
		} else if (!matches(*argv, "remcsumtx")) {
			remcsumtx = 1;
		} else if (!matches(*argv, "noremcsumtx")) {
			remcsumtx = 0;
		} else if (!matches(*argv, "remcsumrx")) {
			remcsumrx = 1;
		} else if (!matches(*argv, "noremcsumrx")) {
			remcsumrx = 0;
		} else if (!matches(*argv, "external")) {
			metadata = 1;
			learning = 0;
		} else if (!matches(*argv, "noexternal")) {
			metadata = 0;
		} else if (!matches(*argv, "gbp")) {
			gbp = 1;
		} else if (!matches(*argv, "gpe")) {
			gpe = 1;
		} else if (matches(*argv, "help") == 0) {
			explain();
			return -1;
		} else {
			fprintf(stderr, "vxlan: unknown command \"%s\"?\n", *argv);
			explain();
			return -1;
		}
		argc--, argv++;
	}

	if (metadata && vni_set) {
		fprintf(stderr, "vxlan: both 'external' and vni cannot be specified\n");
		return -1;
	}

	if (!metadata && !vni_set) {
		fprintf(stderr, "vxlan: missing virtual network identifier\n");
		return -1;
	}

	if ((gaddr && daddr) ||
	    (!IN6_IS_ADDR_UNSPECIFIED(&gaddr6) &&
	     !IN6_IS_ADDR_UNSPECIFIED(&daddr6))) {
		fprintf(stderr, "vxlan: both group and remote cannot be specified\n");
		return -1;
	}

	if ((gaddr || !IN6_IS_ADDR_UNSPECIFIED(&gaddr6)) && !link) {
		fprintf(stderr, "vxlan: 'group' requires 'dev' to be specified\n");
		return -1;
	}

	if (!dst_port_set && gpe) {
		dstport = 4790;
	} else if (!dst_port_set) {
		fprintf(stderr, "vxlan: destination port not specified\n"
			"Will use Linux kernel default (non-standard value)\n");
		fprintf(stderr,
			"Use 'dstport 4789' to get the IANA assigned value\n"
			"Use 'dstport 0' to get default and quiet this message\n");
	}

	addattr32(n, 1024, IFLA_VXLAN_ID, vni);
	if (gaddr)
		addattr_l(n, 1024, IFLA_VXLAN_GROUP, &gaddr, 4);
	else if (daddr)
		addattr_l(n, 1024, IFLA_VXLAN_GROUP, &daddr, 4);
	else if (!IN6_IS_ADDR_UNSPECIFIED(&gaddr6))
		addattr_l(n, 1024, IFLA_VXLAN_GROUP6, &gaddr6, sizeof(struct in6_addr));
	else if (!IN6_IS_ADDR_UNSPECIFIED(&daddr6))
		addattr_l(n, 1024, IFLA_VXLAN_GROUP6, &daddr6, sizeof(struct in6_addr));
	else if (preferred_family == AF_INET)
		addattr_l(n, 1024, IFLA_VXLAN_GROUP, &daddr, 4);
	else if (preferred_family == AF_INET6)
		addattr_l(n, 1024, IFLA_VXLAN_GROUP6, &daddr6, sizeof(struct in6_addr));

	if (saddr)
		addattr_l(n, 1024, IFLA_VXLAN_LOCAL, &saddr, 4);
	else if (!IN6_IS_ADDR_UNSPECIFIED(&saddr6))
		addattr_l(n, 1024, IFLA_VXLAN_LOCAL6, &saddr6, sizeof(struct in6_addr));

	if (link)
		addattr32(n, 1024, IFLA_VXLAN_LINK, link);
	addattr32(n, 1024, IFLA_VXLAN_LABEL, label);
	addattr8(n, 1024, IFLA_VXLAN_TTL, ttl);
	addattr8(n, 1024, IFLA_VXLAN_TOS, tos);
	addattr8(n, 1024, IFLA_VXLAN_LEARNING, learning);
	addattr8(n, 1024, IFLA_VXLAN_PROXY, proxy);
	addattr8(n, 1024, IFLA_VXLAN_RSC, rsc);
	addattr8(n, 1024, IFLA_VXLAN_L2MISS, l2miss);
	addattr8(n, 1024, IFLA_VXLAN_L3MISS, l3miss);
	addattr8(n, 1024, IFLA_VXLAN_REMCSUM_TX, remcsumtx);
	addattr8(n, 1024, IFLA_VXLAN_REMCSUM_RX, remcsumrx);
	addattr8(n, 1024, IFLA_VXLAN_COLLECT_METADATA, metadata);

	if (udpcsum_set)
		addattr8(n, 1024, IFLA_VXLAN_UDP_CSUM, udpcsum);
	if (udp6zerocsumtx_set)
		addattr8(n, 1024, IFLA_VXLAN_UDP_ZERO_CSUM6_TX, udp6zerocsumtx);
	if (udp6zerocsumrx_set)
		addattr8(n, 1024, IFLA_VXLAN_UDP_ZERO_CSUM6_RX, udp6zerocsumrx);
	if (noage)
		addattr32(n, 1024, IFLA_VXLAN_AGEING, 0);
	else if (age)
		addattr32(n, 1024, IFLA_VXLAN_AGEING, age);
	if (maxaddr)
		addattr32(n, 1024, IFLA_VXLAN_LIMIT, maxaddr);
	if (range.low || range.high)
		addattr_l(n, 1024, IFLA_VXLAN_PORT_RANGE,
			  &range, sizeof(range));
	if (dstport)
		addattr16(n, 1024, IFLA_VXLAN_PORT, htons(dstport));

	if (gbp)
		addattr_l(n, 1024, IFLA_VXLAN_GBP, NULL, 0);
	if (gpe)
		addattr_l(n, 1024, IFLA_VXLAN_GPE, NULL, 0);


	return 0;
}

static void vxlan_print_opt(struct link_util *lu, FILE *f, struct rtattr *tb[])
{
	__u32 vni;
	unsigned int link;
	__u8 tos;
	__u32 maxaddr;
	char s2[64];

	if (!tb)
		return;

	if (!tb[IFLA_VXLAN_ID] ||
	    RTA_PAYLOAD(tb[IFLA_VXLAN_ID]) < sizeof(__u32))
		return;

	vni = rta_getattr_u32(tb[IFLA_VXLAN_ID]);
	fprintf(f, "id %u ", vni);

	if (tb[IFLA_VXLAN_GROUP]) {
		__be32 addr = rta_getattr_u32(tb[IFLA_VXLAN_GROUP]);

		if (addr) {
			if (IN_MULTICAST(ntohl(addr)))
				fprintf(f, "group %s ",
					format_host(AF_INET, 4, &addr));
			else
				fprintf(f, "remote %s ",
					format_host(AF_INET, 4, &addr));
		}
	} else if (tb[IFLA_VXLAN_GROUP6]) {
		struct in6_addr addr;

		memcpy(&addr, RTA_DATA(tb[IFLA_VXLAN_GROUP6]), sizeof(struct in6_addr));
		if (!IN6_IS_ADDR_UNSPECIFIED(&addr)) {
			if (IN6_IS_ADDR_MULTICAST(&addr))
				fprintf(f, "group %s ",
					format_host(AF_INET6, sizeof(struct in6_addr), &addr));
			else
				fprintf(f, "remote %s ",
					format_host(AF_INET6, sizeof(struct in6_addr), &addr));
		}
	}

	if (tb[IFLA_VXLAN_LOCAL]) {
		__be32 addr = rta_getattr_u32(tb[IFLA_VXLAN_LOCAL]);

		if (addr)
			fprintf(f, "local %s ",
				format_host(AF_INET, 4, &addr));
	} else if (tb[IFLA_VXLAN_LOCAL6]) {
		struct in6_addr addr;

		memcpy(&addr, RTA_DATA(tb[IFLA_VXLAN_LOCAL6]), sizeof(struct in6_addr));
		if (!IN6_IS_ADDR_UNSPECIFIED(&addr))
			fprintf(f, "local %s ",
				format_host(AF_INET6, sizeof(struct in6_addr), &addr));
	}

	if (tb[IFLA_VXLAN_LINK] &&
	    (link = rta_getattr_u32(tb[IFLA_VXLAN_LINK]))) {
		const char *n = if_indextoname(link, s2);

		if (n)
			fprintf(f, "dev %s ", n);
		else
			fprintf(f, "dev %u ", link);
	}

	if (tb[IFLA_VXLAN_PORT_RANGE]) {
		const struct ifla_vxlan_port_range *r
			= RTA_DATA(tb[IFLA_VXLAN_PORT_RANGE]);
		fprintf(f, "srcport %u %u ", ntohs(r->low), ntohs(r->high));
	}

	if (tb[IFLA_VXLAN_PORT])
		fprintf(f, "dstport %u ",
			rta_getattr_be16(tb[IFLA_VXLAN_PORT]));

	if (tb[IFLA_VXLAN_LEARNING] &&
	    !rta_getattr_u8(tb[IFLA_VXLAN_LEARNING]))
		fputs("nolearning ", f);

	if (tb[IFLA_VXLAN_PROXY] && rta_getattr_u8(tb[IFLA_VXLAN_PROXY]))
		fputs("proxy ", f);

	if (tb[IFLA_VXLAN_RSC] && rta_getattr_u8(tb[IFLA_VXLAN_RSC]))
		fputs("rsc ", f);

	if (tb[IFLA_VXLAN_L2MISS] && rta_getattr_u8(tb[IFLA_VXLAN_L2MISS]))
		fputs("l2miss ", f);

	if (tb[IFLA_VXLAN_L3MISS] && rta_getattr_u8(tb[IFLA_VXLAN_L3MISS]))
		fputs("l3miss ", f);

	if (tb[IFLA_VXLAN_TOS] &&
	    (tos = rta_getattr_u8(tb[IFLA_VXLAN_TOS]))) {
		if (tos == 1)
			fprintf(f, "tos inherit ");
		else
			fprintf(f, "tos %#x ", tos);
	}

	if (tb[IFLA_VXLAN_TTL]) {
		__u8 ttl = rta_getattr_u8(tb[IFLA_VXLAN_TTL]);

		if (ttl)
			fprintf(f, "ttl %d ", ttl);
	}

	if (tb[IFLA_VXLAN_LABEL]) {
		__u32 label = rta_getattr_u32(tb[IFLA_VXLAN_LABEL]);

		if (label)
			fprintf(f, "flowlabel %#x ", ntohl(label));
	}

	if (tb[IFLA_VXLAN_AGEING]) {
		__u32 age = rta_getattr_u32(tb[IFLA_VXLAN_AGEING]);

		if (age == 0)
			fprintf(f, "ageing none ");
		else
			fprintf(f, "ageing %u ", age);
	}

	if (tb[IFLA_VXLAN_LIMIT] &&
	    ((maxaddr = rta_getattr_u32(tb[IFLA_VXLAN_LIMIT])) != 0))
		    fprintf(f, "maxaddr %u ", maxaddr);

	if (tb[IFLA_VXLAN_UDP_CSUM]) {
		if (!rta_getattr_u8(tb[IFLA_VXLAN_UDP_CSUM]))
			fputs("no", f);
		fputs("udpcsum ", f);
	}

	if (tb[IFLA_VXLAN_UDP_ZERO_CSUM6_TX]) {
		if (!rta_getattr_u8(tb[IFLA_VXLAN_UDP_ZERO_CSUM6_TX]))
			fputs("no", f);
		fputs("udp6zerocsumtx ", f);
	}

	if (tb[IFLA_VXLAN_UDP_ZERO_CSUM6_RX]) {
		if (!rta_getattr_u8(tb[IFLA_VXLAN_UDP_ZERO_CSUM6_RX]))
			fputs("no", f);
		fputs("udp6zerocsumrx ", f);
	}

	if (tb[IFLA_VXLAN_REMCSUM_TX] &&
	    rta_getattr_u8(tb[IFLA_VXLAN_REMCSUM_TX]))
		fputs("remcsumtx ", f);

	if (tb[IFLA_VXLAN_REMCSUM_RX] &&
	    rta_getattr_u8(tb[IFLA_VXLAN_REMCSUM_RX]))
		fputs("remcsumrx ", f);

	if (tb[IFLA_VXLAN_COLLECT_METADATA] &&
	    rta_getattr_u8(tb[IFLA_VXLAN_COLLECT_METADATA]))
		fputs("external ", f);

	if (tb[IFLA_VXLAN_GBP])
		fputs("gbp ", f);
	if (tb[IFLA_VXLAN_GPE])
		fputs("gpe ", f);
}

static void vxlan_print_help(struct link_util *lu, int argc, char **argv,
	FILE *f)
{
	print_explain(f);
}

struct link_util vxlan_link_util = {
	.id		= "vxlan",
	.maxattr	= IFLA_VXLAN_MAX,
	.parse_opt	= vxlan_parse_opt,
	.print_opt	= vxlan_print_opt,
	.print_help	= vxlan_print_help,
};
Commit	Line	Data
a5494df2 SH	1	/*
	2	* iplink_vxlan.c VXLAN device support
	3	*
	4	* This program is free software; you can redistribute it and/or
	5	* modify it under the terms of the GNU General Public License
	6	* as published by the Free Software Foundation; either version
	7	* 2 of the License, or (at your option) any later version.
	8	*
	9	* Authors: Stephen Hemminger <shemminger@vyatta.com
	10	*/
	11
	12	#include <stdio.h>
	13	#include <stdlib.h>
	14	#include <string.h>
	15	#include <net/if.h>
	16	#include <linux/ip.h>
	17	#include <linux/if_link.h>
	18	#include <arpa/inet.h>
	19
	20	#include "rt_names.h"
	21	#include "utils.h"
	22	#include "ip_common.h"
	23
561e650e	24	static void print_explain(FILE *f)
561e650e	25	{
5cd64c97	26	fprintf(f, "Usage: ... vxlan id VNI [ { group \| remote } IP_ADDRESS ] [ local ADDR ]\n");
f8eb79a6	27	fprintf(f, " [ ttl TTL ] [ tos TOS ] [ flowlabel LABEL ] [ dev PHYS_DEV ]\n");
561e650e	28	fprintf(f, " [ dstport PORT ] [ srcport MIN MAX ]\n");
	29	fprintf(f, " [ [no]learning ] [ [no]proxy ] [ [no]rsc ]\n");
	30	fprintf(f, " [ [no]l2miss ] [ [no]l3miss ]\n");
	31	fprintf(f, " [ ageing SECONDS ] [ maxaddress NUMBER ]\n");
666cdc50	32	fprintf(f, " [ [no]udpcsum ] [ [no]udp6zerocsumtx ] [ [no]udp6zerocsumrx ]\n");
35f59d86	33	fprintf(f, " [ [no]remcsumtx ] [ [no]remcsumrx ]\n");
346410bd	34	fprintf(f, " [ [no]external ] [ gbp ] [ gpe ]\n");
561e650e	35	fprintf(f, "\n");
f8eb79a6 DB	36	fprintf(f, "Where: VNI := 0-16777215\n");
	37	fprintf(f, " ADDR := { IP_ADDRESS \| any }\n");
	38	fprintf(f, " TOS := { NUMBER \| inherit }\n");
	39	fprintf(f, " TTL := { 1..255 \| inherit }\n");
	40	fprintf(f, " LABEL := 0-1048575\n");
561e650e	41	}
561e650e	42
a5494df2 SH	43	static void explain(void)
a5494df2 SH	44	{
561e650e	45	print_explain(stderr);
a5494df2 SH	46	}
	47
	48	static int vxlan_parse_opt(struct link_util lu, int argc, char *argv,
	49	struct nlmsghdr *n)
	50	{
	51	__u32 vni = 0;
	52	int vni_set = 0;
	53	__u32 saddr = 0;
	54	__u32 gaddr = 0;
7cfa3802	55	__u32 daddr = 0;
aa574cd6 WC	56	struct in6_addr saddr6 = IN6ADDR_ANY_INIT;
	57	struct in6_addr gaddr6 = IN6ADDR_ANY_INIT;
	58	struct in6_addr daddr6 = IN6ADDR_ANY_INIT;
56f5daac	59	unsigned int link = 0;
a5494df2 SH	60	__u8 tos = 0;
a5494df2 SH	61	__u8 ttl = 0;
f8eb79a6	62	__u32 label = 0;
a5494df2	63	__u8 learning = 1;
1556e29d DS	64	__u8 proxy = 0;
	65	__u8 rsc = 0;
	66	__u8 l2miss = 0;
	67	__u8 l3miss = 0;
a5494df2 SH	68	__u8 noage = 0;
	69	__u32 age = 0;
	70	__u32 maxaddr = 0;
514cdfb4	71	__u16 dstport = 0;
666cdc50	72	__u8 udpcsum = 0;
af325398	73	bool udpcsum_set = false;
666cdc50	74	__u8 udp6zerocsumtx = 0;
af325398	75	bool udp6zerocsumtx_set = false;
666cdc50	76	__u8 udp6zerocsumrx = 0;
af325398	77	bool udp6zerocsumrx_set = false;
35f59d86 TH	78	__u8 remcsumtx = 0;
35f59d86 TH	79	__u8 remcsumrx = 0;
e79c327e	80	__u8 metadata = 0;
2eb90dc7	81	__u8 gbp = 0;
346410bd	82	__u8 gpe = 0;
514cdfb4	83	int dst_port_set = 0;
2d596120	84	struct ifla_vxlan_port_range range = { 0, 0 };
a5494df2 SH	85
	86	while (argc > 0) {
	87	if (!matches(*argv, "id") \|\|
	88	!matches(*argv, "vni")) {
	89	NEXT_ARG();
	90	if (get_u32(&vni, *argv, 0) \|\|
	91	vni >= 1u << 24)
	92	invarg("invalid id", *argv);
	93	vni_set = 1;
	94	} else if (!matches(*argv, "group")) {
	95	NEXT_ARG();
aa574cd6 WC	96	if (!inet_get_addr(*argv, &gaddr, &gaddr6)) {
	97	fprintf(stderr, "Invalid address \"%s\"\n", *argv);
	98	return -1;
	99	}
	100	if (!IN6_IS_ADDR_MULTICAST(&gaddr6) && !IN_MULTICAST(ntohl(gaddr)))
7cfa3802 AW	101	invarg("invalid group address", *argv);
	102	} else if (!matches(*argv, "remote")) {
	103	NEXT_ARG();
aa574cd6 WC	104	if (!inet_get_addr(*argv, &daddr, &daddr6)) {
	105	fprintf(stderr, "Invalid address \"%s\"\n", *argv);
	106	return -1;
	107	}
	108	if (IN6_IS_ADDR_MULTICAST(&daddr6) \|\| IN_MULTICAST(ntohl(daddr)))
7cfa3802	109	invarg("invalid remote address", *argv);
a5494df2 SH	110	} else if (!matches(*argv, "local")) {
a5494df2 SH	111	NEXT_ARG();
aa574cd6 WC	112	if (strcmp(*argv, "any")) {
	113	if (!inet_get_addr(*argv, &saddr, &saddr6)) {
	114	fprintf(stderr, "Invalid address \"%s\"\n", *argv);
	115	return -1;
	116	}
	117	}
	118
	119	if (IN_MULTICAST(ntohl(saddr)) \|\| IN6_IS_ADDR_MULTICAST(&saddr6))
a5494df2 SH	120	invarg("invalid local address", *argv);
	121	} else if (!matches(*argv, "dev")) {
	122	NEXT_ARG();
	123	link = if_nametoindex(*argv);
0cb6bb51 CW	124	if (link == 0) {
	125	fprintf(stderr, "Cannot find device \"%s\"\n",
	126	*argv);
a5494df2	127	exit(-1);
0cb6bb51	128	}
a5494df2 SH	129	} else if (!matches(*argv, "ttl") \|\|
a5494df2 SH	130	!matches(*argv, "hoplimit")) {
56f5daac	131	unsigned int uval;
a5494df2 SH	132
	133	NEXT_ARG();
	134	if (strcmp(*argv, "inherit") != 0) {
	135	if (get_unsigned(&uval, *argv, 0))
2d596120	136	invarg("invalid TTL", *argv);
a5494df2	137	if (uval > 255)
2d596120	138	invarg("TTL must be <= 255", *argv);
a5494df2 SH	139	ttl = uval;
	140	}
	141	} else if (!matches(*argv, "tos") \|\|
	142	!matches(*argv, "dsfield")) {
	143	__u32 uval;
	144
	145	NEXT_ARG();
	146	if (strcmp(*argv, "inherit") != 0) {
	147	if (rtnl_dsfield_a2n(&uval, *argv))
	148	invarg("bad TOS value", *argv);
	149	tos = uval;
	150	} else
	151	tos = 1;
f8eb79a6 DB	152	} else if (!matches(*argv, "label") \|\|
	153	!matches(*argv, "flowlabel")) {
	154	__u32 uval;
	155
	156	NEXT_ARG();
	157	if (get_u32(&uval, *argv, 0) \|\|
	158	(uval & ~LABEL_MAX_MASK))
	159	invarg("invalid flowlabel", *argv);
	160	label = htonl(uval);
a5494df2 SH	161	} else if (!matches(*argv, "ageing")) {
	162	NEXT_ARG();
	163	if (strcmp(*argv, "none") == 0)
	164	noage = 1;
	165	else if (get_u32(&age, *argv, 0))
2d596120	166	invarg("ageing timer", *argv);
a5494df2 SH	167	} else if (!matches(*argv, "maxaddress")) {
	168	NEXT_ARG();
	169	if (strcmp(*argv, "unlimited") == 0)
	170	maxaddr = 0;
	171	else if (get_u32(&maxaddr, *argv, 0))
2d596120	172	invarg("max addresses", *argv);
514cdfb4 SH	173	} else if (!matches(*argv, "port") \|\|
514cdfb4 SH	174	!matches(*argv, "srcport")) {
2d596120	175	NEXT_ARG();
9f7401fa	176	if (get_be16(&range.low, *argv, 0))
2d596120 SH	177	invarg("min port", *argv);
2d596120 SH	178	NEXT_ARG();
9f7401fa	179	if (get_be16(&range.high, *argv, 0))
2d596120	180	invarg("max port", *argv);
56f5daac	181	} else if (!matches(*argv, "dstport")) {
514cdfb4 SH	182	NEXT_ARG();
	183	if (get_u16(&dstport, *argv, 0))
	184	invarg("dst port", *argv);
	185	dst_port_set = 1;
a5494df2 SH	186	} else if (!matches(*argv, "nolearning")) {
	187	learning = 0;
	188	} else if (!matches(*argv, "learning")) {
	189	learning = 1;
1556e29d DS	190	} else if (!matches(*argv, "noproxy")) {
	191	proxy = 0;
	192	} else if (!matches(*argv, "proxy")) {
	193	proxy = 1;
	194	} else if (!matches(*argv, "norsc")) {
	195	rsc = 0;
	196	} else if (!matches(*argv, "rsc")) {
	197	rsc = 1;
	198	} else if (!matches(*argv, "nol2miss")) {
	199	l2miss = 0;
	200	} else if (!matches(*argv, "l2miss")) {
	201	l2miss = 1;
	202	} else if (!matches(*argv, "nol3miss")) {
	203	l3miss = 0;
	204	} else if (!matches(*argv, "l3miss")) {
	205	l3miss = 1;
666cdc50 TH	206	} else if (!matches(*argv, "udpcsum")) {
666cdc50 TH	207	udpcsum = 1;
af325398	208	udpcsum_set = true;
666cdc50 TH	209	} else if (!matches(*argv, "noudpcsum")) {
666cdc50 TH	210	udpcsum = 0;
af325398	211	udpcsum_set = true;
666cdc50 TH	212	} else if (!matches(*argv, "udp6zerocsumtx")) {
666cdc50 TH	213	udp6zerocsumtx = 1;
af325398	214	udp6zerocsumtx_set = true;
666cdc50 TH	215	} else if (!matches(*argv, "noudp6zerocsumtx")) {
666cdc50 TH	216	udp6zerocsumtx = 0;
af325398	217	udp6zerocsumtx_set = true;
666cdc50 TH	218	} else if (!matches(*argv, "udp6zerocsumrx")) {
666cdc50 TH	219	udp6zerocsumrx = 1;
af325398	220	udp6zerocsumrx_set = true;
666cdc50 TH	221	} else if (!matches(*argv, "noudp6zerocsumrx")) {
666cdc50 TH	222	udp6zerocsumrx = 0;
af325398	223	udp6zerocsumrx_set = true;
35f59d86 TH	224	} else if (!matches(*argv, "remcsumtx")) {
	225	remcsumtx = 1;
	226	} else if (!matches(*argv, "noremcsumtx")) {
	227	remcsumtx = 0;
	228	} else if (!matches(*argv, "remcsumrx")) {
	229	remcsumrx = 1;
	230	} else if (!matches(*argv, "noremcsumrx")) {
	231	remcsumrx = 0;
e79c327e PA	232	} else if (!matches(*argv, "external")) {
e79c327e PA	233	metadata = 1;
44df4597	234	learning = 0;
e79c327e PA	235	} else if (!matches(*argv, "noexternal")) {
e79c327e PA	236	metadata = 0;
2eb90dc7 TG	237	} else if (!matches(*argv, "gbp")) {
2eb90dc7 TG	238	gbp = 1;
346410bd JB	239	} else if (!matches(*argv, "gpe")) {
346410bd JB	240	gpe = 1;
a5494df2 SH	241	} else if (matches(*argv, "help") == 0) {
	242	explain();
	243	return -1;
	244	} else {
14645ec2	245	fprintf(stderr, "vxlan: unknown command \"%s\"?\n", *argv);
a5494df2 SH	246	explain();
	247	return -1;
	248	}
	249	argc--, argv++;
	250	}
2a126a85	251
e79c327e PA	252	if (metadata && vni_set) {
	253	fprintf(stderr, "vxlan: both 'external' and vni cannot be specified\n");
	254	return -1;
	255	}
	256
	257	if (!metadata && !vni_set) {
a5494df2 SH	258	fprintf(stderr, "vxlan: missing virtual network identifier\n");
	259	return -1;
	260	}
514cdfb4	261
aa574cd6	262	if ((gaddr && daddr) \|\|
1f4c51c0 JB	263	(!IN6_IS_ADDR_UNSPECIFIED(&gaddr6) &&
1f4c51c0 JB	264	!IN6_IS_ADDR_UNSPECIFIED(&daddr6))) {
7cfa3802 AW	265	fprintf(stderr, "vxlan: both group and remote cannot be specified\n");
	266	return -1;
	267	}
514cdfb4	268
e2cfe550 JB	269	if ((gaddr \|\| !IN6_IS_ADDR_UNSPECIFIED(&gaddr6)) && !link) {
	270	fprintf(stderr, "vxlan: 'group' requires 'dev' to be specified\n");
	271	return -1;
	272	}
	273
346410bd JB	274	if (!dst_port_set && gpe) {
	275	dstport = 4790;
	276	} else if (!dst_port_set) {
514cdfb4 SH	277	fprintf(stderr, "vxlan: destination port not specified\n"
514cdfb4 SH	278	"Will use Linux kernel default (non-standard value)\n");
0612519e	279	fprintf(stderr,
514cdfb4 SH	280	"Use 'dstport 4789' to get the IANA assigned value\n"
	281	"Use 'dstport 0' to get default and quiet this message\n");
	282	}
	283
a5494df2	284	addattr32(n, 1024, IFLA_VXLAN_ID, vni);
b64da5a5 SH	285	if (gaddr)
b64da5a5 SH	286	addattr_l(n, 1024, IFLA_VXLAN_GROUP, &gaddr, 4);
7cfa3802 AW	287	else if (daddr)
7cfa3802 AW	288	addattr_l(n, 1024, IFLA_VXLAN_GROUP, &daddr, 4);
97d564b9	289	else if (!IN6_IS_ADDR_UNSPECIFIED(&gaddr6))
aa574cd6	290	addattr_l(n, 1024, IFLA_VXLAN_GROUP6, &gaddr6, sizeof(struct in6_addr));
1f4c51c0	291	else if (!IN6_IS_ADDR_UNSPECIFIED(&daddr6))
aa574cd6	292	addattr_l(n, 1024, IFLA_VXLAN_GROUP6, &daddr6, sizeof(struct in6_addr));
97d564b9 VB	293	else if (preferred_family == AF_INET)
	294	addattr_l(n, 1024, IFLA_VXLAN_GROUP, &daddr, 4);
	295	else if (preferred_family == AF_INET6)
	296	addattr_l(n, 1024, IFLA_VXLAN_GROUP6, &daddr6, sizeof(struct in6_addr));
aa574cd6	297
b64da5a5 SH	298	if (saddr)
b64da5a5 SH	299	addattr_l(n, 1024, IFLA_VXLAN_LOCAL, &saddr, 4);
1f4c51c0	300	else if (!IN6_IS_ADDR_UNSPECIFIED(&saddr6))
aa574cd6 WC	301	addattr_l(n, 1024, IFLA_VXLAN_LOCAL6, &saddr6, sizeof(struct in6_addr));
aa574cd6 WC	302
a5494df2 SH	303	if (link)
a5494df2 SH	304	addattr32(n, 1024, IFLA_VXLAN_LINK, link);
f8eb79a6	305	addattr32(n, 1024, IFLA_VXLAN_LABEL, label);
a5494df2 SH	306	addattr8(n, 1024, IFLA_VXLAN_TTL, ttl);
	307	addattr8(n, 1024, IFLA_VXLAN_TOS, tos);
	308	addattr8(n, 1024, IFLA_VXLAN_LEARNING, learning);
1556e29d DS	309	addattr8(n, 1024, IFLA_VXLAN_PROXY, proxy);
	310	addattr8(n, 1024, IFLA_VXLAN_RSC, rsc);
	311	addattr8(n, 1024, IFLA_VXLAN_L2MISS, l2miss);
	312	addattr8(n, 1024, IFLA_VXLAN_L3MISS, l3miss);
35f59d86 TH	313	addattr8(n, 1024, IFLA_VXLAN_REMCSUM_TX, remcsumtx);
35f59d86 TH	314	addattr8(n, 1024, IFLA_VXLAN_REMCSUM_RX, remcsumrx);
e79c327e	315	addattr8(n, 1024, IFLA_VXLAN_COLLECT_METADATA, metadata);
514cdfb4	316
af325398 JG	317	if (udpcsum_set)
	318	addattr8(n, 1024, IFLA_VXLAN_UDP_CSUM, udpcsum);
	319	if (udp6zerocsumtx_set)
	320	addattr8(n, 1024, IFLA_VXLAN_UDP_ZERO_CSUM6_TX, udp6zerocsumtx);
	321	if (udp6zerocsumrx_set)
	322	addattr8(n, 1024, IFLA_VXLAN_UDP_ZERO_CSUM6_RX, udp6zerocsumrx);
a5494df2 SH	323	if (noage)
	324	addattr32(n, 1024, IFLA_VXLAN_AGEING, 0);
	325	else if (age)
	326	addattr32(n, 1024, IFLA_VXLAN_AGEING, age);
	327	if (maxaddr)
	328	addattr32(n, 1024, IFLA_VXLAN_LIMIT, maxaddr);
2d596120 SH	329	if (range.low \|\| range.high)
	330	addattr_l(n, 1024, IFLA_VXLAN_PORT_RANGE,
	331	&range, sizeof(range));
514cdfb4 SH	332	if (dstport)
514cdfb4 SH	333	addattr16(n, 1024, IFLA_VXLAN_PORT, htons(dstport));
a5494df2	334
2eb90dc7 TG	335	if (gbp)
2eb90dc7 TG	336	addattr_l(n, 1024, IFLA_VXLAN_GBP, NULL, 0);
346410bd JB	337	if (gpe)
346410bd JB	338	addattr_l(n, 1024, IFLA_VXLAN_GPE, NULL, 0);
2eb90dc7 TG	339
2eb90dc7 TG	340
a5494df2 SH	341	return 0;
	342	}
	343
	344	static void vxlan_print_opt(struct link_util lu, FILE f, struct rtattr *tb[])
	345	{
	346	__u32 vni;
56f5daac	347	unsigned int link;
2d596120 SH	348	__u8 tos;
2d596120 SH	349	__u32 maxaddr;
a5494df2 SH	350	char s2[64];
	351
	352	if (!tb)
	353	return;
	354
	355	if (!tb[IFLA_VXLAN_ID] \|\|
	356	RTA_PAYLOAD(tb[IFLA_VXLAN_ID]) < sizeof(__u32))
	357	return;
	358
	359	vni = rta_getattr_u32(tb[IFLA_VXLAN_ID]);
	360	fprintf(f, "id %u ", vni);
	361
	362	if (tb[IFLA_VXLAN_GROUP]) {
b64da5a5	363	__be32 addr = rta_getattr_u32(tb[IFLA_VXLAN_GROUP]);
56f5daac	364
7cfa3802 AW	365	if (addr) {
	366	if (IN_MULTICAST(ntohl(addr)))
	367	fprintf(f, "group %s ",
a418e451	368	format_host(AF_INET, 4, &addr));
7cfa3802 AW	369	else
7cfa3802 AW	370	fprintf(f, "remote %s ",
a418e451	371	format_host(AF_INET, 4, &addr));
7cfa3802	372	}
aa574cd6 WC	373	} else if (tb[IFLA_VXLAN_GROUP6]) {
aa574cd6 WC	374	struct in6_addr addr;
56f5daac	375
aa574cd6	376	memcpy(&addr, RTA_DATA(tb[IFLA_VXLAN_GROUP6]), sizeof(struct in6_addr));
1f4c51c0	377	if (!IN6_IS_ADDR_UNSPECIFIED(&addr)) {
aa574cd6 WC	378	if (IN6_IS_ADDR_MULTICAST(&addr))
aa574cd6 WC	379	fprintf(f, "group %s ",
a418e451	380	format_host(AF_INET6, sizeof(struct in6_addr), &addr));
aa574cd6 WC	381	else
aa574cd6 WC	382	fprintf(f, "remote %s ",
a418e451	383	format_host(AF_INET6, sizeof(struct in6_addr), &addr));
aa574cd6	384	}
a5494df2 SH	385	}
	386
	387	if (tb[IFLA_VXLAN_LOCAL]) {
b64da5a5	388	__be32 addr = rta_getattr_u32(tb[IFLA_VXLAN_LOCAL]);
56f5daac	389
a5494df2	390	if (addr)
1556e29d	391	fprintf(f, "local %s ",
a418e451	392	format_host(AF_INET, 4, &addr));
aa574cd6 WC	393	} else if (tb[IFLA_VXLAN_LOCAL6]) {
aa574cd6 WC	394	struct in6_addr addr;
56f5daac	395
aa574cd6	396	memcpy(&addr, RTA_DATA(tb[IFLA_VXLAN_LOCAL6]), sizeof(struct in6_addr));
1f4c51c0	397	if (!IN6_IS_ADDR_UNSPECIFIED(&addr))
aa574cd6	398	fprintf(f, "local %s ",
a418e451	399	format_host(AF_INET6, sizeof(struct in6_addr), &addr));
a5494df2 SH	400	}
	401
	402	if (tb[IFLA_VXLAN_LINK] &&
	403	(link = rta_getattr_u32(tb[IFLA_VXLAN_LINK]))) {
	404	const char *n = if_indextoname(link, s2);
	405
	406	if (n)
	407	fprintf(f, "dev %s ", n);
	408	else
	409	fprintf(f, "dev %u ", link);
	410	}
	411
2d596120 SH	412	if (tb[IFLA_VXLAN_PORT_RANGE]) {
	413	const struct ifla_vxlan_port_range *r
	414	= RTA_DATA(tb[IFLA_VXLAN_PORT_RANGE]);
514cdfb4	415	fprintf(f, "srcport %u %u ", ntohs(r->low), ntohs(r->high));
1556e29d	416	}
2d596120	417
514cdfb4 SH	418	if (tb[IFLA_VXLAN_PORT])
514cdfb4 SH	419	fprintf(f, "dstport %u ",
aab0f610	420	rta_getattr_be16(tb[IFLA_VXLAN_PORT]));
514cdfb4	421
a5494df2 SH	422	if (tb[IFLA_VXLAN_LEARNING] &&
	423	!rta_getattr_u8(tb[IFLA_VXLAN_LEARNING]))
	424	fputs("nolearning ", f);
1556e29d DS	425
	426	if (tb[IFLA_VXLAN_PROXY] && rta_getattr_u8(tb[IFLA_VXLAN_PROXY]))
	427	fputs("proxy ", f);
	428
	429	if (tb[IFLA_VXLAN_RSC] && rta_getattr_u8(tb[IFLA_VXLAN_RSC]))
	430	fputs("rsc ", f);
	431
	432	if (tb[IFLA_VXLAN_L2MISS] && rta_getattr_u8(tb[IFLA_VXLAN_L2MISS]))
	433	fputs("l2miss ", f);
	434
	435	if (tb[IFLA_VXLAN_L3MISS] && rta_getattr_u8(tb[IFLA_VXLAN_L3MISS]))
	436	fputs("l3miss ", f);
	437
2d596120 SH	438	if (tb[IFLA_VXLAN_TOS] &&
2d596120 SH	439	(tos = rta_getattr_u8(tb[IFLA_VXLAN_TOS]))) {
a5494df2 SH	440	if (tos == 1)
	441	fprintf(f, "tos inherit ");
	442	else
	443	fprintf(f, "tos %#x ", tos);
	444	}
	445
	446	if (tb[IFLA_VXLAN_TTL]) {
	447	__u8 ttl = rta_getattr_u8(tb[IFLA_VXLAN_TTL]);
56f5daac	448
a5494df2 SH	449	if (ttl)
	450	fprintf(f, "ttl %d ", ttl);
	451	}
	452
f8eb79a6 DB	453	if (tb[IFLA_VXLAN_LABEL]) {
	454	__u32 label = rta_getattr_u32(tb[IFLA_VXLAN_LABEL]);
	455
	456	if (label)
	457	fprintf(f, "flowlabel %#x ", ntohl(label));
	458	}
	459
a5494df2 SH	460	if (tb[IFLA_VXLAN_AGEING]) {
a5494df2 SH	461	__u32 age = rta_getattr_u32(tb[IFLA_VXLAN_AGEING]);
56f5daac	462
a5494df2 SH	463	if (age == 0)
	464	fprintf(f, "ageing none ");
	465	else
	466	fprintf(f, "ageing %u ", age);
	467	}
2d596120 SH	468
2d596120 SH	469	if (tb[IFLA_VXLAN_LIMIT] &&
6ad5399c	470	((maxaddr = rta_getattr_u32(tb[IFLA_VXLAN_LIMIT])) != 0))
2d596120	471	fprintf(f, "maxaddr %u ", maxaddr);
666cdc50	472
af325398 JG	473	if (tb[IFLA_VXLAN_UDP_CSUM]) {
	474	if (!rta_getattr_u8(tb[IFLA_VXLAN_UDP_CSUM]))
	475	fputs("no", f);
666cdc50	476	fputs("udpcsum ", f);
af325398	477	}
666cdc50	478
af325398 JG	479	if (tb[IFLA_VXLAN_UDP_ZERO_CSUM6_TX]) {
	480	if (!rta_getattr_u8(tb[IFLA_VXLAN_UDP_ZERO_CSUM6_TX]))
	481	fputs("no", f);
666cdc50	482	fputs("udp6zerocsumtx ", f);
af325398	483	}
666cdc50	484
af325398 JG	485	if (tb[IFLA_VXLAN_UDP_ZERO_CSUM6_RX]) {
	486	if (!rta_getattr_u8(tb[IFLA_VXLAN_UDP_ZERO_CSUM6_RX]))
	487	fputs("no", f);
666cdc50	488	fputs("udp6zerocsumrx ", f);
af325398	489	}
2eb90dc7	490
35f59d86 TH	491	if (tb[IFLA_VXLAN_REMCSUM_TX] &&
	492	rta_getattr_u8(tb[IFLA_VXLAN_REMCSUM_TX]))
	493	fputs("remcsumtx ", f);
	494
	495	if (tb[IFLA_VXLAN_REMCSUM_RX] &&
	496	rta_getattr_u8(tb[IFLA_VXLAN_REMCSUM_RX]))
	497	fputs("remcsumrx ", f);
	498
e79c327e PA	499	if (tb[IFLA_VXLAN_COLLECT_METADATA] &&
	500	rta_getattr_u8(tb[IFLA_VXLAN_COLLECT_METADATA]))
	501	fputs("external ", f);
	502
2eb90dc7 TG	503	if (tb[IFLA_VXLAN_GBP])
2eb90dc7 TG	504	fputs("gbp ", f);
346410bd JB	505	if (tb[IFLA_VXLAN_GPE])
346410bd JB	506	fputs("gpe ", f);
a5494df2 SH	507	}
a5494df2 SH	508
561e650e	509	static void vxlan_print_help(struct link_util lu, int argc, char *argv,
	510	FILE *f)
	511	{
	512	print_explain(f);
	513	}
	514
a5494df2 SH	515	struct link_util vxlan_link_util = {
	516	.id = "vxlan",
	517	.maxattr = IFLA_VXLAN_MAX,
	518	.parse_opt = vxlan_parse_opt,
	519	.print_opt = vxlan_print_opt,
561e650e	520	.print_help = vxlan_print_help,
a5494df2	521	};