[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 ] [ 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 ]\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 int 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;
	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;
	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, "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;
			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;
		} else if (!matches(*argv, "noexternal")) {
			metadata = 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 (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) ||
		(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_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);


	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 (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));
			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 (memcmp(&addr, &in6addr_any, sizeof(addr)) != 0)
			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 ",
			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]) {
		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);
}

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");
561e650e	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");
e79c327e	34	fprintf(f, " [ [no]external ] [ 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;
56f5daac	58	unsigned int link = 0;
a5494df2 SH	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	70	__u8 udpcsum = 0;
af325398	71	bool udpcsum_set = false;
666cdc50	72	__u8 udp6zerocsumtx = 0;
af325398	73	bool udp6zerocsumtx_set = false;
666cdc50	74	__u8 udp6zerocsumrx = 0;
af325398	75	bool udp6zerocsumrx_set = false;
35f59d86 TH	76	__u8 remcsumtx = 0;
35f59d86 TH	77	__u8 remcsumrx = 0;
e79c327e	78	__u8 metadata = 0;
2eb90dc7	79	__u8 gbp = 0;
514cdfb4	80	int dst_port_set = 0;
2d596120	81	struct ifla_vxlan_port_range range = { 0, 0 };
a5494df2 SH	82
	83	while (argc > 0) {
	84	if (!matches(*argv, "id") \|\|
	85	!matches(*argv, "vni")) {
	86	NEXT_ARG();
	87	if (get_u32(&vni, *argv, 0) \|\|
	88	vni >= 1u << 24)
	89	invarg("invalid id", *argv);
	90	vni_set = 1;
	91	} else if (!matches(*argv, "group")) {
	92	NEXT_ARG();
aa574cd6 WC	93	if (!inet_get_addr(*argv, &gaddr, &gaddr6)) {
	94	fprintf(stderr, "Invalid address \"%s\"\n", *argv);
	95	return -1;
	96	}
	97	if (!IN6_IS_ADDR_MULTICAST(&gaddr6) && !IN_MULTICAST(ntohl(gaddr)))
7cfa3802 AW	98	invarg("invalid group address", *argv);
	99	} else if (!matches(*argv, "remote")) {
	100	NEXT_ARG();
aa574cd6 WC	101	if (!inet_get_addr(*argv, &daddr, &daddr6)) {
	102	fprintf(stderr, "Invalid address \"%s\"\n", *argv);
	103	return -1;
	104	}
	105	if (IN6_IS_ADDR_MULTICAST(&daddr6) \|\| IN_MULTICAST(ntohl(daddr)))
7cfa3802	106	invarg("invalid remote address", *argv);
a5494df2 SH	107	} else if (!matches(*argv, "local")) {
a5494df2 SH	108	NEXT_ARG();
aa574cd6 WC	109	if (strcmp(*argv, "any")) {
	110	if (!inet_get_addr(*argv, &saddr, &saddr6)) {
	111	fprintf(stderr, "Invalid address \"%s\"\n", *argv);
	112	return -1;
	113	}
	114	}
	115
	116	if (IN_MULTICAST(ntohl(saddr)) \|\| IN6_IS_ADDR_MULTICAST(&saddr6))
a5494df2 SH	117	invarg("invalid local address", *argv);
	118	} else if (!matches(*argv, "dev")) {
	119	NEXT_ARG();
	120	link = if_nametoindex(*argv);
0cb6bb51 CW	121	if (link == 0) {
	122	fprintf(stderr, "Cannot find device \"%s\"\n",
	123	*argv);
a5494df2	124	exit(-1);
0cb6bb51	125	}
a5494df2 SH	126	} else if (!matches(*argv, "ttl") \|\|
a5494df2 SH	127	!matches(*argv, "hoplimit")) {
56f5daac	128	unsigned int uval;
a5494df2 SH	129
	130	NEXT_ARG();
	131	if (strcmp(*argv, "inherit") != 0) {
	132	if (get_unsigned(&uval, *argv, 0))
2d596120	133	invarg("invalid TTL", *argv);
a5494df2	134	if (uval > 255)
2d596120	135	invarg("TTL must be <= 255", *argv);
a5494df2 SH	136	ttl = uval;
	137	}
	138	} else if (!matches(*argv, "tos") \|\|
	139	!matches(*argv, "dsfield")) {
	140	__u32 uval;
	141
	142	NEXT_ARG();
	143	if (strcmp(*argv, "inherit") != 0) {
	144	if (rtnl_dsfield_a2n(&uval, *argv))
	145	invarg("bad TOS value", *argv);
	146	tos = uval;
	147	} else
	148	tos = 1;
	149	} else if (!matches(*argv, "ageing")) {
	150	NEXT_ARG();
	151	if (strcmp(*argv, "none") == 0)
	152	noage = 1;
	153	else if (get_u32(&age, *argv, 0))
2d596120	154	invarg("ageing timer", *argv);
a5494df2 SH	155	} else if (!matches(*argv, "maxaddress")) {
	156	NEXT_ARG();
	157	if (strcmp(*argv, "unlimited") == 0)
	158	maxaddr = 0;
	159	else if (get_u32(&maxaddr, *argv, 0))
2d596120	160	invarg("max addresses", *argv);
514cdfb4 SH	161	} else if (!matches(*argv, "port") \|\|
514cdfb4 SH	162	!matches(*argv, "srcport")) {
2d596120	163	__u16 minport, maxport;
56f5daac	164
2d596120 SH	165	NEXT_ARG();
	166	if (get_u16(&minport, *argv, 0))
	167	invarg("min port", *argv);
	168	NEXT_ARG();
	169	if (get_u16(&maxport, *argv, 0))
	170	invarg("max port", *argv);
	171	range.low = htons(minport);
	172	range.high = htons(maxport);
56f5daac	173	} else if (!matches(*argv, "dstport")) {
514cdfb4 SH	174	NEXT_ARG();
	175	if (get_u16(&dstport, *argv, 0))
	176	invarg("dst port", *argv);
	177	dst_port_set = 1;
a5494df2 SH	178	} else if (!matches(*argv, "nolearning")) {
	179	learning = 0;
	180	} else if (!matches(*argv, "learning")) {
	181	learning = 1;
1556e29d DS	182	} else if (!matches(*argv, "noproxy")) {
	183	proxy = 0;
	184	} else if (!matches(*argv, "proxy")) {
	185	proxy = 1;
	186	} else if (!matches(*argv, "norsc")) {
	187	rsc = 0;
	188	} else if (!matches(*argv, "rsc")) {
	189	rsc = 1;
	190	} else if (!matches(*argv, "nol2miss")) {
	191	l2miss = 0;
	192	} else if (!matches(*argv, "l2miss")) {
	193	l2miss = 1;
	194	} else if (!matches(*argv, "nol3miss")) {
	195	l3miss = 0;
	196	} else if (!matches(*argv, "l3miss")) {
	197	l3miss = 1;
666cdc50 TH	198	} else if (!matches(*argv, "udpcsum")) {
666cdc50 TH	199	udpcsum = 1;
af325398	200	udpcsum_set = true;
666cdc50 TH	201	} else if (!matches(*argv, "noudpcsum")) {
666cdc50 TH	202	udpcsum = 0;
af325398	203	udpcsum_set = true;
666cdc50 TH	204	} else if (!matches(*argv, "udp6zerocsumtx")) {
666cdc50 TH	205	udp6zerocsumtx = 1;
af325398	206	udp6zerocsumtx_set = true;
666cdc50 TH	207	} else if (!matches(*argv, "noudp6zerocsumtx")) {
666cdc50 TH	208	udp6zerocsumtx = 0;
af325398	209	udp6zerocsumtx_set = true;
666cdc50 TH	210	} else if (!matches(*argv, "udp6zerocsumrx")) {
666cdc50 TH	211	udp6zerocsumrx = 1;
af325398	212	udp6zerocsumrx_set = true;
666cdc50 TH	213	} else if (!matches(*argv, "noudp6zerocsumrx")) {
666cdc50 TH	214	udp6zerocsumrx = 0;
af325398	215	udp6zerocsumrx_set = true;
35f59d86 TH	216	} else if (!matches(*argv, "remcsumtx")) {
	217	remcsumtx = 1;
	218	} else if (!matches(*argv, "noremcsumtx")) {
	219	remcsumtx = 0;
	220	} else if (!matches(*argv, "remcsumrx")) {
	221	remcsumrx = 1;
	222	} else if (!matches(*argv, "noremcsumrx")) {
	223	remcsumrx = 0;
e79c327e PA	224	} else if (!matches(*argv, "external")) {
	225	metadata = 1;
	226	} else if (!matches(*argv, "noexternal")) {
	227	metadata = 0;
2eb90dc7 TG	228	} else if (!matches(*argv, "gbp")) {
2eb90dc7 TG	229	gbp = 1;
a5494df2 SH	230	} else if (matches(*argv, "help") == 0) {
	231	explain();
	232	return -1;
	233	} else {
14645ec2	234	fprintf(stderr, "vxlan: unknown command \"%s\"?\n", *argv);
a5494df2 SH	235	explain();
	236	return -1;
	237	}
	238	argc--, argv++;
	239	}
2a126a85	240
e79c327e PA	241	if (metadata && vni_set) {
	242	fprintf(stderr, "vxlan: both 'external' and vni cannot be specified\n");
	243	return -1;
	244	}
	245
	246	if (!metadata && !vni_set) {
a5494df2 SH	247	fprintf(stderr, "vxlan: missing virtual network identifier\n");
	248	return -1;
	249	}
514cdfb4	250
aa574cd6 WC	251	if ((gaddr && daddr) \|\|
	252	(memcmp(&gaddr6, &in6addr_any, sizeof(gaddr6)) &&
	253	memcmp(&daddr6, &in6addr_any, sizeof(daddr6)))) {
7cfa3802 AW	254	fprintf(stderr, "vxlan: both group and remote cannot be specified\n");
	255	return -1;
	256	}
514cdfb4 SH	257
	258	if (!dst_port_set) {
	259	fprintf(stderr, "vxlan: destination port not specified\n"
	260	"Will use Linux kernel default (non-standard value)\n");
0612519e	261	fprintf(stderr,
514cdfb4 SH	262	"Use 'dstport 4789' to get the IANA assigned value\n"
	263	"Use 'dstport 0' to get default and quiet this message\n");
	264	}
	265
a5494df2	266	addattr32(n, 1024, IFLA_VXLAN_ID, vni);
b64da5a5 SH	267	if (gaddr)
b64da5a5 SH	268	addattr_l(n, 1024, IFLA_VXLAN_GROUP, &gaddr, 4);
7cfa3802 AW	269	else if (daddr)
7cfa3802 AW	270	addattr_l(n, 1024, IFLA_VXLAN_GROUP, &daddr, 4);
aa574cd6 WC	271	if (memcmp(&gaddr6, &in6addr_any, sizeof(gaddr6)) != 0)
	272	addattr_l(n, 1024, IFLA_VXLAN_GROUP6, &gaddr6, sizeof(struct in6_addr));
	273	else if (memcmp(&daddr6, &in6addr_any, sizeof(daddr6)) != 0)
	274	addattr_l(n, 1024, IFLA_VXLAN_GROUP6, &daddr6, sizeof(struct in6_addr));
	275
b64da5a5 SH	276	if (saddr)
b64da5a5 SH	277	addattr_l(n, 1024, IFLA_VXLAN_LOCAL, &saddr, 4);
aa574cd6 WC	278	else if (memcmp(&saddr6, &in6addr_any, sizeof(saddr6)) != 0)
	279	addattr_l(n, 1024, IFLA_VXLAN_LOCAL6, &saddr6, sizeof(struct in6_addr));
	280
a5494df2 SH	281	if (link)
	282	addattr32(n, 1024, IFLA_VXLAN_LINK, link);
	283	addattr8(n, 1024, IFLA_VXLAN_TTL, ttl);
	284	addattr8(n, 1024, IFLA_VXLAN_TOS, tos);
	285	addattr8(n, 1024, IFLA_VXLAN_LEARNING, learning);
1556e29d DS	286	addattr8(n, 1024, IFLA_VXLAN_PROXY, proxy);
	287	addattr8(n, 1024, IFLA_VXLAN_RSC, rsc);
	288	addattr8(n, 1024, IFLA_VXLAN_L2MISS, l2miss);
	289	addattr8(n, 1024, IFLA_VXLAN_L3MISS, l3miss);
35f59d86 TH	290	addattr8(n, 1024, IFLA_VXLAN_REMCSUM_TX, remcsumtx);
35f59d86 TH	291	addattr8(n, 1024, IFLA_VXLAN_REMCSUM_RX, remcsumrx);
e79c327e	292	addattr8(n, 1024, IFLA_VXLAN_COLLECT_METADATA, metadata);
514cdfb4	293
af325398 JG	294	if (udpcsum_set)
	295	addattr8(n, 1024, IFLA_VXLAN_UDP_CSUM, udpcsum);
	296	if (udp6zerocsumtx_set)
	297	addattr8(n, 1024, IFLA_VXLAN_UDP_ZERO_CSUM6_TX, udp6zerocsumtx);
	298	if (udp6zerocsumrx_set)
	299	addattr8(n, 1024, IFLA_VXLAN_UDP_ZERO_CSUM6_RX, udp6zerocsumrx);
a5494df2 SH	300	if (noage)
	301	addattr32(n, 1024, IFLA_VXLAN_AGEING, 0);
	302	else if (age)
	303	addattr32(n, 1024, IFLA_VXLAN_AGEING, age);
	304	if (maxaddr)
	305	addattr32(n, 1024, IFLA_VXLAN_LIMIT, maxaddr);
2d596120 SH	306	if (range.low \|\| range.high)
	307	addattr_l(n, 1024, IFLA_VXLAN_PORT_RANGE,
	308	&range, sizeof(range));
514cdfb4 SH	309	if (dstport)
514cdfb4 SH	310	addattr16(n, 1024, IFLA_VXLAN_PORT, htons(dstport));
a5494df2	311
2eb90dc7 TG	312	if (gbp)
	313	addattr_l(n, 1024, IFLA_VXLAN_GBP, NULL, 0);
	314
	315
a5494df2 SH	316	return 0;
	317	}
	318
	319	static void vxlan_print_opt(struct link_util lu, FILE f, struct rtattr *tb[])
	320	{
	321	__u32 vni;
56f5daac	322	unsigned int link;
2d596120 SH	323	__u8 tos;
2d596120 SH	324	__u32 maxaddr;
a5494df2 SH	325	char s2[64];
	326
	327	if (!tb)
	328	return;
	329
	330	if (!tb[IFLA_VXLAN_ID] \|\|
	331	RTA_PAYLOAD(tb[IFLA_VXLAN_ID]) < sizeof(__u32))
	332	return;
	333
	334	vni = rta_getattr_u32(tb[IFLA_VXLAN_ID]);
	335	fprintf(f, "id %u ", vni);
	336
	337	if (tb[IFLA_VXLAN_GROUP]) {
b64da5a5	338	__be32 addr = rta_getattr_u32(tb[IFLA_VXLAN_GROUP]);
56f5daac	339
7cfa3802 AW	340	if (addr) {
	341	if (IN_MULTICAST(ntohl(addr)))
	342	fprintf(f, "group %s ",
a418e451	343	format_host(AF_INET, 4, &addr));
7cfa3802 AW	344	else
7cfa3802 AW	345	fprintf(f, "remote %s ",
a418e451	346	format_host(AF_INET, 4, &addr));
7cfa3802	347	}
aa574cd6 WC	348	} else if (tb[IFLA_VXLAN_GROUP6]) {
aa574cd6 WC	349	struct in6_addr addr;
56f5daac	350
aa574cd6 WC	351	memcpy(&addr, RTA_DATA(tb[IFLA_VXLAN_GROUP6]), sizeof(struct in6_addr));
	352	if (memcmp(&addr, &in6addr_any, sizeof(addr)) != 0) {
	353	if (IN6_IS_ADDR_MULTICAST(&addr))
	354	fprintf(f, "group %s ",
a418e451	355	format_host(AF_INET6, sizeof(struct in6_addr), &addr));
aa574cd6 WC	356	else
aa574cd6 WC	357	fprintf(f, "remote %s ",
a418e451	358	format_host(AF_INET6, sizeof(struct in6_addr), &addr));
aa574cd6	359	}
a5494df2 SH	360	}
	361
	362	if (tb[IFLA_VXLAN_LOCAL]) {
b64da5a5	363	__be32 addr = rta_getattr_u32(tb[IFLA_VXLAN_LOCAL]);
56f5daac	364
a5494df2	365	if (addr)
1556e29d	366	fprintf(f, "local %s ",
a418e451	367	format_host(AF_INET, 4, &addr));
aa574cd6 WC	368	} else if (tb[IFLA_VXLAN_LOCAL6]) {
aa574cd6 WC	369	struct in6_addr addr;
56f5daac	370
aa574cd6 WC	371	memcpy(&addr, RTA_DATA(tb[IFLA_VXLAN_LOCAL6]), sizeof(struct in6_addr));
	372	if (memcmp(&addr, &in6addr_any, sizeof(addr)) != 0)
	373	fprintf(f, "local %s ",
a418e451	374	format_host(AF_INET6, sizeof(struct in6_addr), &addr));
a5494df2 SH	375	}
	376
	377	if (tb[IFLA_VXLAN_LINK] &&
	378	(link = rta_getattr_u32(tb[IFLA_VXLAN_LINK]))) {
	379	const char *n = if_indextoname(link, s2);
	380
	381	if (n)
	382	fprintf(f, "dev %s ", n);
	383	else
	384	fprintf(f, "dev %u ", link);
	385	}
	386
2d596120 SH	387	if (tb[IFLA_VXLAN_PORT_RANGE]) {
	388	const struct ifla_vxlan_port_range *r
	389	= RTA_DATA(tb[IFLA_VXLAN_PORT_RANGE]);
514cdfb4	390	fprintf(f, "srcport %u %u ", ntohs(r->low), ntohs(r->high));
1556e29d	391	}
2d596120	392
514cdfb4 SH	393	if (tb[IFLA_VXLAN_PORT])
	394	fprintf(f, "dstport %u ",
	395	ntohs(rta_getattr_u16(tb[IFLA_VXLAN_PORT])));
	396
a5494df2 SH	397	if (tb[IFLA_VXLAN_LEARNING] &&
	398	!rta_getattr_u8(tb[IFLA_VXLAN_LEARNING]))
	399	fputs("nolearning ", f);
1556e29d DS	400
	401	if (tb[IFLA_VXLAN_PROXY] && rta_getattr_u8(tb[IFLA_VXLAN_PROXY]))
	402	fputs("proxy ", f);
	403
	404	if (tb[IFLA_VXLAN_RSC] && rta_getattr_u8(tb[IFLA_VXLAN_RSC]))
	405	fputs("rsc ", f);
	406
	407	if (tb[IFLA_VXLAN_L2MISS] && rta_getattr_u8(tb[IFLA_VXLAN_L2MISS]))
	408	fputs("l2miss ", f);
	409
	410	if (tb[IFLA_VXLAN_L3MISS] && rta_getattr_u8(tb[IFLA_VXLAN_L3MISS]))
	411	fputs("l3miss ", f);
	412
2d596120 SH	413	if (tb[IFLA_VXLAN_TOS] &&
2d596120 SH	414	(tos = rta_getattr_u8(tb[IFLA_VXLAN_TOS]))) {
a5494df2 SH	415	if (tos == 1)
	416	fprintf(f, "tos inherit ");
	417	else
	418	fprintf(f, "tos %#x ", tos);
	419	}
	420
	421	if (tb[IFLA_VXLAN_TTL]) {
	422	__u8 ttl = rta_getattr_u8(tb[IFLA_VXLAN_TTL]);
56f5daac	423
a5494df2 SH	424	if (ttl)
	425	fprintf(f, "ttl %d ", ttl);
	426	}
	427
	428	if (tb[IFLA_VXLAN_AGEING]) {
	429	__u32 age = rta_getattr_u32(tb[IFLA_VXLAN_AGEING]);
56f5daac	430
a5494df2 SH	431	if (age == 0)
	432	fprintf(f, "ageing none ");
	433	else
	434	fprintf(f, "ageing %u ", age);
	435	}
2d596120 SH	436
2d596120 SH	437	if (tb[IFLA_VXLAN_LIMIT] &&
6ad5399c	438	((maxaddr = rta_getattr_u32(tb[IFLA_VXLAN_LIMIT])) != 0))
2d596120	439	fprintf(f, "maxaddr %u ", maxaddr);
666cdc50	440
af325398 JG	441	if (tb[IFLA_VXLAN_UDP_CSUM]) {
	442	if (!rta_getattr_u8(tb[IFLA_VXLAN_UDP_CSUM]))
	443	fputs("no", f);
666cdc50	444	fputs("udpcsum ", f);
af325398	445	}
666cdc50	446
af325398 JG	447	if (tb[IFLA_VXLAN_UDP_ZERO_CSUM6_TX]) {
	448	if (!rta_getattr_u8(tb[IFLA_VXLAN_UDP_ZERO_CSUM6_TX]))
	449	fputs("no", f);
666cdc50	450	fputs("udp6zerocsumtx ", f);
af325398	451	}
666cdc50	452
af325398 JG	453	if (tb[IFLA_VXLAN_UDP_ZERO_CSUM6_RX]) {
	454	if (!rta_getattr_u8(tb[IFLA_VXLAN_UDP_ZERO_CSUM6_RX]))
	455	fputs("no", f);
666cdc50	456	fputs("udp6zerocsumrx ", f);
af325398	457	}
2eb90dc7	458
35f59d86 TH	459	if (tb[IFLA_VXLAN_REMCSUM_TX] &&
	460	rta_getattr_u8(tb[IFLA_VXLAN_REMCSUM_TX]))
	461	fputs("remcsumtx ", f);
	462
	463	if (tb[IFLA_VXLAN_REMCSUM_RX] &&
	464	rta_getattr_u8(tb[IFLA_VXLAN_REMCSUM_RX]))
	465	fputs("remcsumrx ", f);
	466
e79c327e PA	467	if (tb[IFLA_VXLAN_COLLECT_METADATA] &&
	468	rta_getattr_u8(tb[IFLA_VXLAN_COLLECT_METADATA]))
	469	fputs("external ", f);
	470
2eb90dc7 TG	471	if (tb[IFLA_VXLAN_GBP])
2eb90dc7 TG	472	fputs("gbp ", f);
a5494df2 SH	473	}
a5494df2 SH	474
561e650e	475	static void vxlan_print_help(struct link_util lu, int argc, char *argv,
	476	FILE *f)
	477	{
	478	print_explain(f);
	479	}
	480
a5494df2 SH	481	struct link_util vxlan_link_util = {
	482	.id = "vxlan",
	483	.maxattr = IFLA_VXLAN_MAX,
	484	.parse_opt = vxlan_parse_opt,
	485	.print_opt = vxlan_print_opt,
561e650e	486	.print_help = vxlan_print_help,
a5494df2	487	};