[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 } ADDR ] [ local ADDR ]\n");
	fprintf(f, "                 [ ttl TTL ] [ tos TOS ] [ 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, "                 [ gbp ]\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");
}

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 link = 0;
	__u8 tos = 0;
	__u8 ttl = 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;
	__u8 udp6zerocsumtx = 0;
	__u8 udp6zerocsumrx = 0;
	__u8 remcsumtx = 0;
	__u8 remcsumrx = 0;
	__u8 gbp = 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 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, "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")) {
			__u16 minport, maxport;
			NEXT_ARG();
			if (get_u16(&minport, *argv, 0))
				invarg("min port", *argv);
			NEXT_ARG();
			if (get_u16(&maxport, *argv, 0))
				invarg("max port", *argv);
			range.low = htons(minport);
			range.high = htons(maxport);
		} 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;
		} else if (!matches(*argv, "noudpcsum")) {
			udpcsum = 0;
		} else if (!matches(*argv, "udp6zerocsumtx")) {
			udp6zerocsumtx = 1;
		} else if (!matches(*argv, "noudp6zerocsumtx")) {
			udp6zerocsumtx = 0;
		} else if (!matches(*argv, "udp6zerocsumrx")) {
			udp6zerocsumrx = 1;
		} else if (!matches(*argv, "noudp6zerocsumrx")) {
			udp6zerocsumrx = 0;
		} 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, "gbp")) {
			gbp = 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 (!vni_set) {
		fprintf(stderr, "vxlan: missing virtual network identifier\n");
		return -1;
	}

	if ((gaddr && daddr) ||
		(memcmp(&gaddr6, &in6addr_any, sizeof(gaddr6)) &&
		 memcmp(&daddr6, &in6addr_any, sizeof(daddr6)))) {
		fprintf(stderr, "vxlan: both group and remote cannot be specified\n");
		return -1;
	}

	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);
	if (memcmp(&gaddr6, &in6addr_any, sizeof(gaddr6)) != 0)
		addattr_l(n, 1024, IFLA_VXLAN_GROUP6, &gaddr6, sizeof(struct in6_addr));
	else if (memcmp(&daddr6, &in6addr_any, sizeof(daddr6)) != 0)
		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 (memcmp(&saddr6, &in6addr_any, sizeof(saddr6)) != 0)
		addattr_l(n, 1024, IFLA_VXLAN_LOCAL6, &saddr6, sizeof(struct in6_addr));

	if (link)
		addattr32(n, 1024, IFLA_VXLAN_LINK, link);
	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_UDP_CSUM, udpcsum);
	addattr8(n, 1024, IFLA_VXLAN_UDP_ZERO_CSUM6_TX, udp6zerocsumtx);
	addattr8(n, 1024, IFLA_VXLAN_UDP_ZERO_CSUM6_RX, udp6zerocsumrx);
	addattr8(n, 1024, IFLA_VXLAN_REMCSUM_TX, remcsumtx);
	addattr8(n, 1024, IFLA_VXLAN_REMCSUM_RX, remcsumrx);

	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);


	return 0;
}

static void vxlan_print_opt(struct link_util *lu, FILE *f, struct rtattr *tb[])
{
	__u32 vni;
	unsigned link;
	__u8 tos;
	__u32 maxaddr;
	char s1[1024];
	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, s1, sizeof(s1)));
			else
				fprintf(f, "remote %s ",
					format_host(AF_INET, 4, &addr, s1, sizeof(s1)));
		}
	} else if (tb[IFLA_VXLAN_GROUP6]) {
		struct in6_addr addr;
		memcpy(&addr, RTA_DATA(tb[IFLA_VXLAN_GROUP6]), sizeof(struct in6_addr));
		if (memcmp(&addr, &in6addr_any, sizeof(addr)) != 0) {
			if (IN6_IS_ADDR_MULTICAST(&addr))
				fprintf(f, "group %s ",
					format_host(AF_INET6, sizeof(struct in6_addr), &addr, s1, sizeof(s1)));
			else
				fprintf(f, "remote %s ",
					format_host(AF_INET6, sizeof(struct in6_addr), &addr, s1, sizeof(s1)));
		}
	}

	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, s1, sizeof(s1)));
	} else if (tb[IFLA_VXLAN_LOCAL6]) {
		struct in6_addr addr;
		memcpy(&addr, RTA_DATA(tb[IFLA_VXLAN_LOCAL6]), sizeof(struct in6_addr));
		if (memcmp(&addr, &in6addr_any, sizeof(addr)) != 0)
			fprintf(f, "local %s ",
				format_host(AF_INET6, sizeof(struct in6_addr), &addr, s1, sizeof(s1)));
	}

	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 ",
			ntohs(rta_getattr_u16(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_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] && rta_getattr_u8(tb[IFLA_VXLAN_UDP_CSUM]))
		fputs("udpcsum ", f);

	if (tb[IFLA_VXLAN_UDP_ZERO_CSUM6_TX] &&
	    rta_getattr_u8(tb[IFLA_VXLAN_UDP_ZERO_CSUM6_TX]))
		fputs("udp6zerocsumtx ", f);

	if (tb[IFLA_VXLAN_UDP_ZERO_CSUM6_RX] &&
	    rta_getattr_u8(tb[IFLA_VXLAN_UDP_ZERO_CSUM6_RX]))
		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_GBP])
		fputs("gbp ", 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)
	25	{
	26	fprintf(f, "Usage: ... vxlan id VNI [ { group \| remote } ADDR ] [ local ADDR ]\n");
	27	fprintf(f, " [ ttl TTL ] [ tos TOS ] [ dev PHYS_DEV ]\n");
	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");
2eb90dc7	34	fprintf(f, " [ gbp ]\n");
561e650e	35	fprintf(f, "\n");
	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	}
	41
a5494df2 SH	42	static void explain(void)
a5494df2 SH	43	{
561e650e	44	print_explain(stderr);
a5494df2 SH	45	}
	46
	47	static int vxlan_parse_opt(struct link_util lu, int argc, char *argv,
	48	struct nlmsghdr *n)
	49	{
	50	__u32 vni = 0;
	51	int vni_set = 0;
	52	__u32 saddr = 0;
	53	__u32 gaddr = 0;
7cfa3802	54	__u32 daddr = 0;
aa574cd6 WC	55	struct in6_addr saddr6 = IN6ADDR_ANY_INIT;
	56	struct in6_addr gaddr6 = IN6ADDR_ANY_INIT;
	57	struct in6_addr daddr6 = IN6ADDR_ANY_INIT;
a5494df2 SH	58	unsigned link = 0;
	59	__u8 tos = 0;
	60	__u8 ttl = 0;
	61	__u8 learning = 1;
1556e29d DS	62	__u8 proxy = 0;
	63	__u8 rsc = 0;
	64	__u8 l2miss = 0;
	65	__u8 l3miss = 0;
a5494df2 SH	66	__u8 noage = 0;
	67	__u32 age = 0;
	68	__u32 maxaddr = 0;
514cdfb4	69	__u16 dstport = 0;
666cdc50 TH	70	__u8 udpcsum = 0;
	71	__u8 udp6zerocsumtx = 0;
	72	__u8 udp6zerocsumrx = 0;
35f59d86 TH	73	__u8 remcsumtx = 0;
35f59d86 TH	74	__u8 remcsumrx = 0;
2eb90dc7	75	__u8 gbp = 0;
514cdfb4	76	int dst_port_set = 0;
2d596120	77	struct ifla_vxlan_port_range range = { 0, 0 };
a5494df2 SH	78
	79	while (argc > 0) {
	80	if (!matches(*argv, "id") \|\|
	81	!matches(*argv, "vni")) {
	82	NEXT_ARG();
	83	if (get_u32(&vni, *argv, 0) \|\|
	84	vni >= 1u << 24)
	85	invarg("invalid id", *argv);
	86	vni_set = 1;
	87	} else if (!matches(*argv, "group")) {
	88	NEXT_ARG();
aa574cd6 WC	89	if (!inet_get_addr(*argv, &gaddr, &gaddr6)) {
	90	fprintf(stderr, "Invalid address \"%s\"\n", *argv);
	91	return -1;
	92	}
	93	if (!IN6_IS_ADDR_MULTICAST(&gaddr6) && !IN_MULTICAST(ntohl(gaddr)))
7cfa3802 AW	94	invarg("invalid group address", *argv);
	95	} else if (!matches(*argv, "remote")) {
	96	NEXT_ARG();
aa574cd6 WC	97	if (!inet_get_addr(*argv, &daddr, &daddr6)) {
	98	fprintf(stderr, "Invalid address \"%s\"\n", *argv);
	99	return -1;
	100	}
	101	if (IN6_IS_ADDR_MULTICAST(&daddr6) \|\| IN_MULTICAST(ntohl(daddr)))
7cfa3802	102	invarg("invalid remote address", *argv);
a5494df2 SH	103	} else if (!matches(*argv, "local")) {
a5494df2 SH	104	NEXT_ARG();
aa574cd6 WC	105	if (strcmp(*argv, "any")) {
	106	if (!inet_get_addr(*argv, &saddr, &saddr6)) {
	107	fprintf(stderr, "Invalid address \"%s\"\n", *argv);
	108	return -1;
	109	}
	110	}
	111
	112	if (IN_MULTICAST(ntohl(saddr)) \|\| IN6_IS_ADDR_MULTICAST(&saddr6))
a5494df2 SH	113	invarg("invalid local address", *argv);
	114	} else if (!matches(*argv, "dev")) {
	115	NEXT_ARG();
	116	link = if_nametoindex(*argv);
0cb6bb51 CW	117	if (link == 0) {
	118	fprintf(stderr, "Cannot find device \"%s\"\n",
	119	*argv);
a5494df2	120	exit(-1);
0cb6bb51	121	}
a5494df2 SH	122	} else if (!matches(*argv, "ttl") \|\|
	123	!matches(*argv, "hoplimit")) {
	124	unsigned uval;
	125
	126	NEXT_ARG();
	127	if (strcmp(*argv, "inherit") != 0) {
	128	if (get_unsigned(&uval, *argv, 0))
2d596120	129	invarg("invalid TTL", *argv);
a5494df2	130	if (uval > 255)
2d596120	131	invarg("TTL must be <= 255", *argv);
a5494df2 SH	132	ttl = uval;
	133	}
	134	} else if (!matches(*argv, "tos") \|\|
	135	!matches(*argv, "dsfield")) {
	136	__u32 uval;
	137
	138	NEXT_ARG();
	139	if (strcmp(*argv, "inherit") != 0) {
	140	if (rtnl_dsfield_a2n(&uval, *argv))
	141	invarg("bad TOS value", *argv);
	142	tos = uval;
	143	} else
	144	tos = 1;
	145	} else if (!matches(*argv, "ageing")) {
	146	NEXT_ARG();
	147	if (strcmp(*argv, "none") == 0)
	148	noage = 1;
	149	else if (get_u32(&age, *argv, 0))
2d596120	150	invarg("ageing timer", *argv);
a5494df2 SH	151	} else if (!matches(*argv, "maxaddress")) {
	152	NEXT_ARG();
	153	if (strcmp(*argv, "unlimited") == 0)
	154	maxaddr = 0;
	155	else if (get_u32(&maxaddr, *argv, 0))
2d596120	156	invarg("max addresses", *argv);
514cdfb4 SH	157	} else if (!matches(*argv, "port") \|\|
514cdfb4 SH	158	!matches(*argv, "srcport")) {
2d596120 SH	159	__u16 minport, maxport;
	160	NEXT_ARG();
	161	if (get_u16(&minport, *argv, 0))
	162	invarg("min port", *argv);
	163	NEXT_ARG();
	164	if (get_u16(&maxport, *argv, 0))
	165	invarg("max port", *argv);
	166	range.low = htons(minport);
	167	range.high = htons(maxport);
514cdfb4 SH	168	} else if (!matches(*argv, "dstport")){
	169	NEXT_ARG();
	170	if (get_u16(&dstport, *argv, 0))
	171	invarg("dst port", *argv);
	172	dst_port_set = 1;
a5494df2 SH	173	} else if (!matches(*argv, "nolearning")) {
	174	learning = 0;
	175	} else if (!matches(*argv, "learning")) {
	176	learning = 1;
1556e29d DS	177	} else if (!matches(*argv, "noproxy")) {
	178	proxy = 0;
	179	} else if (!matches(*argv, "proxy")) {
	180	proxy = 1;
	181	} else if (!matches(*argv, "norsc")) {
	182	rsc = 0;
	183	} else if (!matches(*argv, "rsc")) {
	184	rsc = 1;
	185	} else if (!matches(*argv, "nol2miss")) {
	186	l2miss = 0;
	187	} else if (!matches(*argv, "l2miss")) {
	188	l2miss = 1;
	189	} else if (!matches(*argv, "nol3miss")) {
	190	l3miss = 0;
	191	} else if (!matches(*argv, "l3miss")) {
	192	l3miss = 1;
666cdc50 TH	193	} else if (!matches(*argv, "udpcsum")) {
	194	udpcsum = 1;
	195	} else if (!matches(*argv, "noudpcsum")) {
	196	udpcsum = 0;
	197	} else if (!matches(*argv, "udp6zerocsumtx")) {
	198	udp6zerocsumtx = 1;
	199	} else if (!matches(*argv, "noudp6zerocsumtx")) {
	200	udp6zerocsumtx = 0;
	201	} else if (!matches(*argv, "udp6zerocsumrx")) {
	202	udp6zerocsumrx = 1;
	203	} else if (!matches(*argv, "noudp6zerocsumrx")) {
	204	udp6zerocsumrx = 0;
35f59d86 TH	205	} else if (!matches(*argv, "remcsumtx")) {
	206	remcsumtx = 1;
	207	} else if (!matches(*argv, "noremcsumtx")) {
	208	remcsumtx = 0;
	209	} else if (!matches(*argv, "remcsumrx")) {
	210	remcsumrx = 1;
	211	} else if (!matches(*argv, "noremcsumrx")) {
	212	remcsumrx = 0;
2eb90dc7 TG	213	} else if (!matches(*argv, "gbp")) {
2eb90dc7 TG	214	gbp = 1;
a5494df2 SH	215	} else if (matches(*argv, "help") == 0) {
	216	explain();
	217	return -1;
	218	} else {
14645ec2	219	fprintf(stderr, "vxlan: unknown command \"%s\"?\n", *argv);
a5494df2 SH	220	explain();
	221	return -1;
	222	}
	223	argc--, argv++;
	224	}
2a126a85	225
a5494df2 SH	226	if (!vni_set) {
	227	fprintf(stderr, "vxlan: missing virtual network identifier\n");
	228	return -1;
	229	}
514cdfb4	230
aa574cd6 WC	231	if ((gaddr && daddr) \|\|
	232	(memcmp(&gaddr6, &in6addr_any, sizeof(gaddr6)) &&
	233	memcmp(&daddr6, &in6addr_any, sizeof(daddr6)))) {
7cfa3802 AW	234	fprintf(stderr, "vxlan: both group and remote cannot be specified\n");
	235	return -1;
	236	}
514cdfb4 SH	237
	238	if (!dst_port_set) {
	239	fprintf(stderr, "vxlan: destination port not specified\n"
	240	"Will use Linux kernel default (non-standard value)\n");
0612519e	241	fprintf(stderr,
514cdfb4 SH	242	"Use 'dstport 4789' to get the IANA assigned value\n"
	243	"Use 'dstport 0' to get default and quiet this message\n");
	244	}
	245
a5494df2	246	addattr32(n, 1024, IFLA_VXLAN_ID, vni);
b64da5a5 SH	247	if (gaddr)
b64da5a5 SH	248	addattr_l(n, 1024, IFLA_VXLAN_GROUP, &gaddr, 4);
7cfa3802 AW	249	else if (daddr)
7cfa3802 AW	250	addattr_l(n, 1024, IFLA_VXLAN_GROUP, &daddr, 4);
aa574cd6 WC	251	if (memcmp(&gaddr6, &in6addr_any, sizeof(gaddr6)) != 0)
	252	addattr_l(n, 1024, IFLA_VXLAN_GROUP6, &gaddr6, sizeof(struct in6_addr));
	253	else if (memcmp(&daddr6, &in6addr_any, sizeof(daddr6)) != 0)
	254	addattr_l(n, 1024, IFLA_VXLAN_GROUP6, &daddr6, sizeof(struct in6_addr));
	255
b64da5a5 SH	256	if (saddr)
b64da5a5 SH	257	addattr_l(n, 1024, IFLA_VXLAN_LOCAL, &saddr, 4);
aa574cd6 WC	258	else if (memcmp(&saddr6, &in6addr_any, sizeof(saddr6)) != 0)
	259	addattr_l(n, 1024, IFLA_VXLAN_LOCAL6, &saddr6, sizeof(struct in6_addr));
	260
a5494df2 SH	261	if (link)
	262	addattr32(n, 1024, IFLA_VXLAN_LINK, link);
	263	addattr8(n, 1024, IFLA_VXLAN_TTL, ttl);
	264	addattr8(n, 1024, IFLA_VXLAN_TOS, tos);
	265	addattr8(n, 1024, IFLA_VXLAN_LEARNING, learning);
1556e29d DS	266	addattr8(n, 1024, IFLA_VXLAN_PROXY, proxy);
	267	addattr8(n, 1024, IFLA_VXLAN_RSC, rsc);
	268	addattr8(n, 1024, IFLA_VXLAN_L2MISS, l2miss);
	269	addattr8(n, 1024, IFLA_VXLAN_L3MISS, l3miss);
666cdc50 TH	270	addattr8(n, 1024, IFLA_VXLAN_UDP_CSUM, udpcsum);
	271	addattr8(n, 1024, IFLA_VXLAN_UDP_ZERO_CSUM6_TX, udp6zerocsumtx);
	272	addattr8(n, 1024, IFLA_VXLAN_UDP_ZERO_CSUM6_RX, udp6zerocsumrx);
35f59d86 TH	273	addattr8(n, 1024, IFLA_VXLAN_REMCSUM_TX, remcsumtx);
35f59d86 TH	274	addattr8(n, 1024, IFLA_VXLAN_REMCSUM_RX, remcsumrx);
514cdfb4	275
a5494df2 SH	276	if (noage)
	277	addattr32(n, 1024, IFLA_VXLAN_AGEING, 0);
	278	else if (age)
	279	addattr32(n, 1024, IFLA_VXLAN_AGEING, age);
	280	if (maxaddr)
	281	addattr32(n, 1024, IFLA_VXLAN_LIMIT, maxaddr);
2d596120 SH	282	if (range.low \|\| range.high)
	283	addattr_l(n, 1024, IFLA_VXLAN_PORT_RANGE,
	284	&range, sizeof(range));
514cdfb4 SH	285	if (dstport)
514cdfb4 SH	286	addattr16(n, 1024, IFLA_VXLAN_PORT, htons(dstport));
a5494df2	287
2eb90dc7 TG	288	if (gbp)
	289	addattr_l(n, 1024, IFLA_VXLAN_GBP, NULL, 0);
	290
	291
a5494df2 SH	292	return 0;
	293	}
	294
	295	static void vxlan_print_opt(struct link_util lu, FILE f, struct rtattr *tb[])
	296	{
	297	__u32 vni;
	298	unsigned link;
2d596120 SH	299	__u8 tos;
2d596120 SH	300	__u32 maxaddr;
a5494df2 SH	301	char s1[1024];
	302	char s2[64];
	303
	304	if (!tb)
	305	return;
	306
	307	if (!tb[IFLA_VXLAN_ID] \|\|
	308	RTA_PAYLOAD(tb[IFLA_VXLAN_ID]) < sizeof(__u32))
	309	return;
	310
	311	vni = rta_getattr_u32(tb[IFLA_VXLAN_ID]);
	312	fprintf(f, "id %u ", vni);
	313
	314	if (tb[IFLA_VXLAN_GROUP]) {
b64da5a5	315	__be32 addr = rta_getattr_u32(tb[IFLA_VXLAN_GROUP]);
7cfa3802 AW	316	if (addr) {
	317	if (IN_MULTICAST(ntohl(addr)))
	318	fprintf(f, "group %s ",
	319	format_host(AF_INET, 4, &addr, s1, sizeof(s1)));
	320	else
	321	fprintf(f, "remote %s ",
	322	format_host(AF_INET, 4, &addr, s1, sizeof(s1)));
	323	}
aa574cd6 WC	324	} else if (tb[IFLA_VXLAN_GROUP6]) {
	325	struct in6_addr addr;
	326	memcpy(&addr, RTA_DATA(tb[IFLA_VXLAN_GROUP6]), sizeof(struct in6_addr));
	327	if (memcmp(&addr, &in6addr_any, sizeof(addr)) != 0) {
	328	if (IN6_IS_ADDR_MULTICAST(&addr))
	329	fprintf(f, "group %s ",
	330	format_host(AF_INET6, sizeof(struct in6_addr), &addr, s1, sizeof(s1)));
	331	else
	332	fprintf(f, "remote %s ",
	333	format_host(AF_INET6, sizeof(struct in6_addr), &addr, s1, sizeof(s1)));
	334	}
a5494df2 SH	335	}
	336
	337	if (tb[IFLA_VXLAN_LOCAL]) {
b64da5a5	338	__be32 addr = rta_getattr_u32(tb[IFLA_VXLAN_LOCAL]);
a5494df2	339	if (addr)
1556e29d	340	fprintf(f, "local %s ",
a5494df2	341	format_host(AF_INET, 4, &addr, s1, sizeof(s1)));
aa574cd6 WC	342	} else if (tb[IFLA_VXLAN_LOCAL6]) {
	343	struct in6_addr addr;
	344	memcpy(&addr, RTA_DATA(tb[IFLA_VXLAN_LOCAL6]), sizeof(struct in6_addr));
	345	if (memcmp(&addr, &in6addr_any, sizeof(addr)) != 0)
	346	fprintf(f, "local %s ",
	347	format_host(AF_INET6, sizeof(struct in6_addr), &addr, s1, sizeof(s1)));
a5494df2 SH	348	}
	349
	350	if (tb[IFLA_VXLAN_LINK] &&
	351	(link = rta_getattr_u32(tb[IFLA_VXLAN_LINK]))) {
	352	const char *n = if_indextoname(link, s2);
	353
	354	if (n)
	355	fprintf(f, "dev %s ", n);
	356	else
	357	fprintf(f, "dev %u ", link);
	358	}
	359
2d596120 SH	360	if (tb[IFLA_VXLAN_PORT_RANGE]) {
	361	const struct ifla_vxlan_port_range *r
	362	= RTA_DATA(tb[IFLA_VXLAN_PORT_RANGE]);
514cdfb4	363	fprintf(f, "srcport %u %u ", ntohs(r->low), ntohs(r->high));
1556e29d	364	}
2d596120	365
514cdfb4 SH	366	if (tb[IFLA_VXLAN_PORT])
	367	fprintf(f, "dstport %u ",
	368	ntohs(rta_getattr_u16(tb[IFLA_VXLAN_PORT])));
	369
a5494df2 SH	370	if (tb[IFLA_VXLAN_LEARNING] &&
	371	!rta_getattr_u8(tb[IFLA_VXLAN_LEARNING]))
	372	fputs("nolearning ", f);
1556e29d DS	373
	374	if (tb[IFLA_VXLAN_PROXY] && rta_getattr_u8(tb[IFLA_VXLAN_PROXY]))
	375	fputs("proxy ", f);
	376
	377	if (tb[IFLA_VXLAN_RSC] && rta_getattr_u8(tb[IFLA_VXLAN_RSC]))
	378	fputs("rsc ", f);
	379
	380	if (tb[IFLA_VXLAN_L2MISS] && rta_getattr_u8(tb[IFLA_VXLAN_L2MISS]))
	381	fputs("l2miss ", f);
	382
	383	if (tb[IFLA_VXLAN_L3MISS] && rta_getattr_u8(tb[IFLA_VXLAN_L3MISS]))
	384	fputs("l3miss ", f);
	385
2d596120 SH	386	if (tb[IFLA_VXLAN_TOS] &&
2d596120 SH	387	(tos = rta_getattr_u8(tb[IFLA_VXLAN_TOS]))) {
a5494df2 SH	388	if (tos == 1)
	389	fprintf(f, "tos inherit ");
	390	else
	391	fprintf(f, "tos %#x ", tos);
	392	}
	393
	394	if (tb[IFLA_VXLAN_TTL]) {
	395	__u8 ttl = rta_getattr_u8(tb[IFLA_VXLAN_TTL]);
	396	if (ttl)
	397	fprintf(f, "ttl %d ", ttl);
	398	}
	399
	400	if (tb[IFLA_VXLAN_AGEING]) {
	401	__u32 age = rta_getattr_u32(tb[IFLA_VXLAN_AGEING]);
	402	if (age == 0)
	403	fprintf(f, "ageing none ");
	404	else
	405	fprintf(f, "ageing %u ", age);
	406	}
2d596120 SH	407
2d596120 SH	408	if (tb[IFLA_VXLAN_LIMIT] &&
6ad5399c	409	((maxaddr = rta_getattr_u32(tb[IFLA_VXLAN_LIMIT])) != 0))
2d596120	410	fprintf(f, "maxaddr %u ", maxaddr);
666cdc50 TH	411
	412	if (tb[IFLA_VXLAN_UDP_CSUM] && rta_getattr_u8(tb[IFLA_VXLAN_UDP_CSUM]))
	413	fputs("udpcsum ", f);
	414
	415	if (tb[IFLA_VXLAN_UDP_ZERO_CSUM6_TX] &&
	416	rta_getattr_u8(tb[IFLA_VXLAN_UDP_ZERO_CSUM6_TX]))
	417	fputs("udp6zerocsumtx ", f);
	418
	419	if (tb[IFLA_VXLAN_UDP_ZERO_CSUM6_RX] &&
	420	rta_getattr_u8(tb[IFLA_VXLAN_UDP_ZERO_CSUM6_RX]))
	421	fputs("udp6zerocsumrx ", f);
2eb90dc7	422
35f59d86 TH	423	if (tb[IFLA_VXLAN_REMCSUM_TX] &&
	424	rta_getattr_u8(tb[IFLA_VXLAN_REMCSUM_TX]))
	425	fputs("remcsumtx ", f);
	426
	427	if (tb[IFLA_VXLAN_REMCSUM_RX] &&
	428	rta_getattr_u8(tb[IFLA_VXLAN_REMCSUM_RX]))
	429	fputs("remcsumrx ", f);
	430
2eb90dc7 TG	431	if (tb[IFLA_VXLAN_GBP])
2eb90dc7 TG	432	fputs("gbp ", f);
a5494df2 SH	433	}
a5494df2 SH	434
561e650e	435	static void vxlan_print_help(struct link_util lu, int argc, char *argv,
	436	FILE *f)
	437	{
	438	print_explain(f);
	439	}
	440
a5494df2 SH	441	struct link_util vxlan_link_util = {
	442	.id = "vxlan",
	443	.maxattr = IFLA_VXLAN_MAX,
	444	.parse_opt = vxlan_parse_opt,
	445	.print_opt = vxlan_print_opt,
561e650e	446	.print_help = vxlan_print_help,
a5494df2	447	};