[mirror_iproute2.git] / ip / iplink_geneve.c

/*
 * iplink_geneve.c	GENEVE 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:     John W. Linville <linville@tuxdriver.com>
 */

#include <stdio.h>

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

#define GENEVE_ATTRSET(attrs, type) (((attrs) & (1L << (type))) != 0)

static void print_explain(FILE *f)
{
	fprintf(f,
		"Usage: ... geneve id VNI\n"
		"                  remote ADDR\n"
		"                  [ ttl TTL ]\n"
		"                  [ tos TOS ]\n"
		"                  [ flowlabel LABEL ]\n"
		"                  [ dstport PORT ]\n"
		"                  [ [no]external ]\n"
		"                  [ [no]udpcsum ]\n"
		"                  [ [no]udp6zerocsumtx ]\n"
		"                  [ [no]udp6zerocsumrx ]\n"
		"\n"
		"Where: VNI   := 0-16777215\n"
		"       ADDR  := IP_ADDRESS\n"
		"       TOS   := { NUMBER | inherit }\n"
		"       TTL   := { 1..255 | auto | inherit }\n"
		"       LABEL := 0-1048575\n"
	);
}

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

static void check_duparg(__u64 *attrs, int type, const char *key,
			 const char *argv)
{
	if (!GENEVE_ATTRSET(*attrs, type)) {
		*attrs |= (1L << type);
		return;
	}
	duparg2(key, argv);
}

static int geneve_parse_opt(struct link_util *lu, int argc, char **argv,
			  struct nlmsghdr *n)
{
	inet_prefix daddr;
	__u32 vni = 0;
	__u32 label = 0;
	__u8 ttl = 0;
	__u8 tos = 0;
	__u16 dstport = 0;
	bool metadata = 0;
	__u8 udpcsum = 0;
	__u8 udp6zerocsumtx = 0;
	__u8 udp6zerocsumrx = 0;
	__u64 attrs = 0;
	bool set_op = (n->nlmsg_type == RTM_NEWLINK &&
		       !(n->nlmsg_flags & NLM_F_CREATE));

	inet_prefix_reset(&daddr);

	while (argc > 0) {
		if (!matches(*argv, "id") ||
		    !matches(*argv, "vni")) {
			NEXT_ARG();
			check_duparg(&attrs, IFLA_GENEVE_ID, "id", *argv);
			if (get_u32(&vni, *argv, 0) ||
			    vni >= 1u << 24)
				invarg("invalid id", *argv);
		} else if (!matches(*argv, "remote")) {
			NEXT_ARG();
			check_duparg(&attrs, IFLA_GENEVE_REMOTE, "remote",
				     *argv);
			get_addr(&daddr, *argv, AF_UNSPEC);
			if (!is_addrtype_inet_not_multi(&daddr))
				invarg("invalid remote address", *argv);
		} else if (!matches(*argv, "ttl") ||
			   !matches(*argv, "hoplimit")) {
			unsigned int uval;

			NEXT_ARG();
			check_duparg(&attrs, IFLA_GENEVE_TTL, "ttl", *argv);
			if (strcmp(*argv, "inherit") == 0) {
				addattr8(n, 1024, IFLA_GENEVE_TTL_INHERIT, 1);
			} else if (strcmp(*argv, "auto") != 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();
			check_duparg(&attrs, IFLA_GENEVE_TOS, "tos", *argv);
			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();
			check_duparg(&attrs, IFLA_GENEVE_LABEL, "flowlabel",
				     *argv);
			if (get_u32(&uval, *argv, 0) ||
			    (uval & ~LABEL_MAX_MASK))
				invarg("invalid flowlabel", *argv);
			label = htonl(uval);
		} else if (!matches(*argv, "dstport")) {
			NEXT_ARG();
			check_duparg(&attrs, IFLA_GENEVE_PORT, "dstport",
				     *argv);
			if (get_u16(&dstport, *argv, 0))
				invarg("dstport", *argv);
		} else if (!matches(*argv, "external")) {
			check_duparg(&attrs, IFLA_GENEVE_COLLECT_METADATA,
				     *argv, *argv);
			metadata = true;
		} else if (!matches(*argv, "noexternal")) {
			check_duparg(&attrs, IFLA_GENEVE_COLLECT_METADATA,
				     *argv, *argv);
			metadata = false;
		} else if (!matches(*argv, "udpcsum")) {
			check_duparg(&attrs, IFLA_GENEVE_UDP_CSUM, *argv,
				     *argv);
			udpcsum = 1;
		} else if (!matches(*argv, "noudpcsum")) {
			check_duparg(&attrs, IFLA_GENEVE_UDP_CSUM, *argv,
				     *argv);
			udpcsum = 0;
		} else if (!matches(*argv, "udp6zerocsumtx")) {
			check_duparg(&attrs, IFLA_GENEVE_UDP_ZERO_CSUM6_TX,
				     *argv, *argv);
			udp6zerocsumtx = 1;
		} else if (!matches(*argv, "noudp6zerocsumtx")) {
			check_duparg(&attrs, IFLA_GENEVE_UDP_ZERO_CSUM6_TX,
				     *argv, *argv);
			udp6zerocsumtx = 0;
		} else if (!matches(*argv, "udp6zerocsumrx")) {
			check_duparg(&attrs, IFLA_GENEVE_UDP_ZERO_CSUM6_RX,
				     *argv, *argv);
			udp6zerocsumrx = 1;
		} else if (!matches(*argv, "noudp6zerocsumrx")) {
			check_duparg(&attrs, IFLA_GENEVE_UDP_ZERO_CSUM6_RX,
				     *argv, *argv);
			udp6zerocsumrx = 0;
		} else if (matches(*argv, "help") == 0) {
			explain();
			return -1;
		} else {
			fprintf(stderr, "geneve: unknown command \"%s\"?\n", *argv);
			explain();
			return -1;
		}
		argc--, argv++;
	}

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

	if (!metadata) {
		/* parameter checking make sense only for full geneve tunnels */
		if (!GENEVE_ATTRSET(attrs, IFLA_GENEVE_ID)) {
			fprintf(stderr, "geneve: missing virtual network identifier\n");
			return -1;
		}

		/* If we are modifying the geneve device, then we only need the
		 * ID (VNI) to identify the geneve device, and we do not need
		 * the remote IP.
		 */
		if (!set_op && !is_addrtype_inet(&daddr)) {
			fprintf(stderr, "geneve: remote link partner not specified\n");
			return -1;
		}
	}

	addattr32(n, 1024, IFLA_GENEVE_ID, vni);
	if (is_addrtype_inet(&daddr)) {
		int type = (daddr.family == AF_INET) ? IFLA_GENEVE_REMOTE :
						       IFLA_GENEVE_REMOTE6;
		addattr_l(n, 1024, type, daddr.data, daddr.bytelen);
	}
	if (!set_op || GENEVE_ATTRSET(attrs, IFLA_GENEVE_LABEL))
		addattr32(n, 1024, IFLA_GENEVE_LABEL, label);
	if (!set_op || GENEVE_ATTRSET(attrs, IFLA_GENEVE_TTL))
		addattr8(n, 1024, IFLA_GENEVE_TTL, ttl);
	if (!set_op || GENEVE_ATTRSET(attrs, IFLA_GENEVE_TOS))
		addattr8(n, 1024, IFLA_GENEVE_TOS, tos);
	if (dstport)
		addattr16(n, 1024, IFLA_GENEVE_PORT, htons(dstport));
	if (metadata)
		addattr(n, 1024, IFLA_GENEVE_COLLECT_METADATA);
	if (GENEVE_ATTRSET(attrs, IFLA_GENEVE_UDP_CSUM))
		addattr8(n, 1024, IFLA_GENEVE_UDP_CSUM, udpcsum);
	if (GENEVE_ATTRSET(attrs, IFLA_GENEVE_UDP_ZERO_CSUM6_TX))
		addattr8(n, 1024, IFLA_GENEVE_UDP_ZERO_CSUM6_TX, udp6zerocsumtx);
	if (GENEVE_ATTRSET(attrs, IFLA_GENEVE_UDP_ZERO_CSUM6_RX))
		addattr8(n, 1024, IFLA_GENEVE_UDP_ZERO_CSUM6_RX, udp6zerocsumrx);

	return 0;
}

static void geneve_print_opt(struct link_util *lu, FILE *f, struct rtattr *tb[])
{
	__u32 vni;
	__u8 ttl = 0;
	__u8 tos = 0;

	if (!tb)
		return;

	if (tb[IFLA_GENEVE_COLLECT_METADATA]) {
		print_bool(PRINT_ANY, "external", "external", true);
		return;
	}

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

	vni = rta_getattr_u32(tb[IFLA_GENEVE_ID]);
	print_uint(PRINT_ANY, "id", "id %u ", vni);

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

		if (addr)
			print_string(PRINT_ANY,
				     "remote",
				     "remote %s ",
				     format_host(AF_INET, 4, &addr));
	} else if (tb[IFLA_GENEVE_REMOTE6]) {
		struct in6_addr addr;

		memcpy(&addr, RTA_DATA(tb[IFLA_GENEVE_REMOTE6]), sizeof(struct in6_addr));
		if (!IN6_IS_ADDR_UNSPECIFIED(&addr)) {
			if (!IN6_IS_ADDR_MULTICAST(&addr))
				print_string(PRINT_ANY,
					     "remote6",
					     "remote %s ",
					     format_host(AF_INET6,
							 sizeof(struct in6_addr),
							 &addr));
		}
	}

	if (tb[IFLA_GENEVE_TTL_INHERIT] &&
	    rta_getattr_u8(tb[IFLA_GENEVE_TTL_INHERIT])) {
		print_string(PRINT_FP, NULL, "ttl %s ", "inherit");
	} else if (tb[IFLA_GENEVE_TTL]) {
		ttl = rta_getattr_u8(tb[IFLA_GENEVE_TTL]);
		if (is_json_context() || ttl)
			print_uint(PRINT_ANY, "ttl", "ttl %u ", ttl);
		else
			print_string(PRINT_FP, NULL, "ttl %s ", "auto");
	}

	if (tb[IFLA_GENEVE_TOS])
		tos = rta_getattr_u8(tb[IFLA_GENEVE_TOS]);
	if (tos) {
		if (is_json_context() || tos != 1)
			print_0xhex(PRINT_ANY, "tos", "tos %#llx ", tos);
		else
			print_string(PRINT_FP, NULL, "tos %s ", "inherit");
	}

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

		if (label)
			print_0xhex(PRINT_ANY,
				    "label", "flowlabel %#llx ",
				    ntohl(label));
	}

	if (tb[IFLA_GENEVE_PORT])
		print_uint(PRINT_ANY,
			   "port",
			   "dstport %u ",
			   rta_getattr_be16(tb[IFLA_GENEVE_PORT]));

	if (tb[IFLA_GENEVE_UDP_CSUM]) {
		if (is_json_context()) {
			print_bool(PRINT_JSON,
				   "udp_csum",
				   NULL,
				   rta_getattr_u8(tb[IFLA_GENEVE_UDP_CSUM]));
		} else {
			if (!rta_getattr_u8(tb[IFLA_GENEVE_UDP_CSUM]))
				fputs("no", f);
			fputs("udpcsum ", f);
		}
	}

	if (tb[IFLA_GENEVE_UDP_ZERO_CSUM6_TX]) {
		if (is_json_context()) {
			print_bool(PRINT_JSON,
				   "udp_zero_csum6_tx",
				   NULL,
				   rta_getattr_u8(tb[IFLA_GENEVE_UDP_ZERO_CSUM6_TX]));
		} else {
			if (!rta_getattr_u8(tb[IFLA_GENEVE_UDP_ZERO_CSUM6_TX]))
				fputs("no", f);
			fputs("udp6zerocsumtx ", f);
		}
	}

	if (tb[IFLA_GENEVE_UDP_ZERO_CSUM6_RX]) {
		if (is_json_context()) {
			print_bool(PRINT_JSON,
				   "udp_zero_csum6_rx",
				   NULL,
				   rta_getattr_u8(tb[IFLA_GENEVE_UDP_ZERO_CSUM6_RX]));
		} else {
			if (!rta_getattr_u8(tb[IFLA_GENEVE_UDP_ZERO_CSUM6_RX]))
				fputs("no", f);
			fputs("udp6zerocsumrx ", f);
		}
	}
}

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

struct link_util geneve_link_util = {
	.id		= "geneve",
	.maxattr	= IFLA_GENEVE_MAX,
	.parse_opt	= geneve_parse_opt,
	.print_opt	= geneve_print_opt,
	.print_help	= geneve_print_help,
};
Commit	Line	Data
908755dc JL	1	/*
	2	* iplink_geneve.c GENEVE 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: John W. Linville <linville@tuxdriver.com>
	10	*/
	11
	12	#include <stdio.h>
	13
f4739b2e	14	#include "rt_names.h"
908755dc JL	15	#include "utils.h"
	16	#include "ip_common.h"
	17
c2a85c3b GM	18	#define GENEVE_ATTRSET(attrs, type) (((attrs) & (1L << (type))) != 0)
c2a85c3b GM	19
908755dc JL	20	static void print_explain(FILE *f)
908755dc JL	21	{
8b471354 PS	22	fprintf(f,
	23	"Usage: ... geneve id VNI\n"
	24	" remote ADDR\n"
	25	" [ ttl TTL ]\n"
	26	" [ tos TOS ]\n"
	27	" [ flowlabel LABEL ]\n"
	28	" [ dstport PORT ]\n"
	29	" [ [no]external ]\n"
	30	" [ [no]udpcsum ]\n"
	31	" [ [no]udp6zerocsumtx ]\n"
	32	" [ [no]udp6zerocsumrx ]\n"
	33	"\n"
	34	"Where: VNI := 0-16777215\n"
	35	" ADDR := IP_ADDRESS\n"
	36	" TOS := { NUMBER \| inherit }\n"
35b857f9	37	" TTL := { 1..255 \| auto \| inherit }\n"
8b471354 PS	38	" LABEL := 0-1048575\n"
8b471354 PS	39	);
908755dc JL	40	}
	41
	42	static void explain(void)
	43	{
	44	print_explain(stderr);
	45	}
	46
c2a85c3b GM	47	static void check_duparg(__u64 attrs, int type, const char key,
	48	const char *argv)
	49	{
	50	if (!GENEVE_ATTRSET(*attrs, type)) {
	51	*attrs \|= (1L << type);
	52	return;
	53	}
	54	duparg2(key, argv);
	55	}
	56
908755dc JL	57	static int geneve_parse_opt(struct link_util lu, int argc, char *argv,
	58	struct nlmsghdr *n)
	59	{
6c4b6727	60	inet_prefix daddr;
908755dc	61	__u32 vni = 0;
29bb2373	62	__u32 label = 0;
f4c05c2e	63	__u8 ttl = 0;
f4739b2e	64	__u8 tos = 0;
9450c5ec PA	65	__u16 dstport = 0;
9450c5ec PA	66	bool metadata = 0;
325d02b4	67	__u8 udpcsum = 0;
325d02b4	68	__u8 udp6zerocsumtx = 0;
325d02b4	69	__u8 udp6zerocsumrx = 0;
c2a85c3b GM	70	__u64 attrs = 0;
	71	bool set_op = (n->nlmsg_type == RTM_NEWLINK &&
	72	!(n->nlmsg_flags & NLM_F_CREATE));
908755dc	73
9cc173d4	74	inet_prefix_reset(&daddr);
6c4b6727	75
908755dc JL	76	while (argc > 0) {
	77	if (!matches(*argv, "id") \|\|
	78	!matches(*argv, "vni")) {
	79	NEXT_ARG();
c2a85c3b	80	check_duparg(&attrs, IFLA_GENEVE_ID, "id", *argv);
908755dc JL	81	if (get_u32(&vni, *argv, 0) \|\|
	82	vni >= 1u << 24)
	83	invarg("invalid id", *argv);
908755dc JL	84	} else if (!matches(*argv, "remote")) {
908755dc JL	85	NEXT_ARG();
c2a85c3b GM	86	check_duparg(&attrs, IFLA_GENEVE_REMOTE, "remote",
c2a85c3b GM	87	*argv);
6c4b6727 SP	88	get_addr(&daddr, *argv, AF_UNSPEC);
6c4b6727 SP	89	if (!is_addrtype_inet_not_multi(&daddr))
908755dc	90	invarg("invalid remote address", *argv);
f4c05c2e JL	91	} else if (!matches(*argv, "ttl") \|\|
f4c05c2e JL	92	!matches(*argv, "hoplimit")) {
56f5daac	93	unsigned int uval;
f4c05c2e JL	94
f4c05c2e JL	95	NEXT_ARG();
c2a85c3b	96	check_duparg(&attrs, IFLA_GENEVE_TTL, "ttl", *argv);
35b857f9 HL	97	if (strcmp(*argv, "inherit") == 0) {
	98	addattr8(n, 1024, IFLA_GENEVE_TTL_INHERIT, 1);
	99	} else if (strcmp(*argv, "auto") != 0) {
f4c05c2e JL	100	if (get_unsigned(&uval, *argv, 0))
	101	invarg("invalid TTL", *argv);
	102	if (uval > 255)
	103	invarg("TTL must be <= 255", *argv);
	104	ttl = uval;
	105	}
f4739b2e JL	106	} else if (!matches(*argv, "tos") \|\|
	107	!matches(*argv, "dsfield")) {
	108	__u32 uval;
	109
	110	NEXT_ARG();
c2a85c3b	111	check_duparg(&attrs, IFLA_GENEVE_TOS, "tos", *argv);
f4739b2e JL	112	if (strcmp(*argv, "inherit") != 0) {
	113	if (rtnl_dsfield_a2n(&uval, *argv))
	114	invarg("bad TOS value", *argv);
	115	tos = uval;
	116	} else
	117	tos = 1;
29bb2373 DB	118	} else if (!matches(*argv, "label") \|\|
	119	!matches(*argv, "flowlabel")) {
	120	__u32 uval;
	121
	122	NEXT_ARG();
c2a85c3b GM	123	check_duparg(&attrs, IFLA_GENEVE_LABEL, "flowlabel",
c2a85c3b GM	124	*argv);
29bb2373 DB	125	if (get_u32(&uval, *argv, 0) \|\|
	126	(uval & ~LABEL_MAX_MASK))
	127	invarg("invalid flowlabel", *argv);
	128	label = htonl(uval);
9450c5ec PA	129	} else if (!matches(*argv, "dstport")) {
9450c5ec PA	130	NEXT_ARG();
c2a85c3b GM	131	check_duparg(&attrs, IFLA_GENEVE_PORT, "dstport",
c2a85c3b GM	132	*argv);
9450c5ec PA	133	if (get_u16(&dstport, *argv, 0))
	134	invarg("dstport", *argv);
	135	} else if (!matches(*argv, "external")) {
c2a85c3b GM	136	check_duparg(&attrs, IFLA_GENEVE_COLLECT_METADATA,
c2a85c3b GM	137	argv, argv);
9450c5ec PA	138	metadata = true;
9450c5ec PA	139	} else if (!matches(*argv, "noexternal")) {
c2a85c3b GM	140	check_duparg(&attrs, IFLA_GENEVE_COLLECT_METADATA,
c2a85c3b GM	141	argv, argv);
9450c5ec	142	metadata = false;
325d02b4	143	} else if (!matches(*argv, "udpcsum")) {
c2a85c3b GM	144	check_duparg(&attrs, IFLA_GENEVE_UDP_CSUM, *argv,
c2a85c3b GM	145	*argv);
325d02b4	146	udpcsum = 1;
325d02b4	147	} else if (!matches(*argv, "noudpcsum")) {
c2a85c3b GM	148	check_duparg(&attrs, IFLA_GENEVE_UDP_CSUM, *argv,
c2a85c3b GM	149	*argv);
325d02b4	150	udpcsum = 0;
325d02b4	151	} else if (!matches(*argv, "udp6zerocsumtx")) {
c2a85c3b GM	152	check_duparg(&attrs, IFLA_GENEVE_UDP_ZERO_CSUM6_TX,
c2a85c3b GM	153	argv, argv);
325d02b4	154	udp6zerocsumtx = 1;
325d02b4	155	} else if (!matches(*argv, "noudp6zerocsumtx")) {
c2a85c3b GM	156	check_duparg(&attrs, IFLA_GENEVE_UDP_ZERO_CSUM6_TX,
c2a85c3b GM	157	argv, argv);
325d02b4	158	udp6zerocsumtx = 0;
325d02b4	159	} else if (!matches(*argv, "udp6zerocsumrx")) {
c2a85c3b GM	160	check_duparg(&attrs, IFLA_GENEVE_UDP_ZERO_CSUM6_RX,
c2a85c3b GM	161	argv, argv);
325d02b4	162	udp6zerocsumrx = 1;
325d02b4	163	} else if (!matches(*argv, "noudp6zerocsumrx")) {
c2a85c3b GM	164	check_duparg(&attrs, IFLA_GENEVE_UDP_ZERO_CSUM6_RX,
c2a85c3b GM	165	argv, argv);
325d02b4	166	udp6zerocsumrx = 0;
908755dc JL	167	} else if (matches(*argv, "help") == 0) {
	168	explain();
	169	return -1;
	170	} else {
	171	fprintf(stderr, "geneve: unknown command \"%s\"?\n", *argv);
	172	explain();
	173	return -1;
	174	}
	175	argc--, argv++;
	176	}
	177
c2a85c3b	178	if (metadata && GENEVE_ATTRSET(attrs, IFLA_GENEVE_ID)) {
9450c5ec	179	fprintf(stderr, "geneve: both 'external' and vni cannot be specified\n");
908755dc JL	180	return -1;
	181	}
	182
9450c5ec PA	183	if (!metadata) {
9450c5ec PA	184	/* parameter checking make sense only for full geneve tunnels */
c2a85c3b	185	if (!GENEVE_ATTRSET(attrs, IFLA_GENEVE_ID)) {
9450c5ec PA	186	fprintf(stderr, "geneve: missing virtual network identifier\n");
	187	return -1;
	188	}
	189
c2a85c3b GM	190	/* If we are modifying the geneve device, then we only need the
	191	* ID (VNI) to identify the geneve device, and we do not need
	192	* the remote IP.
	193	*/
6c4b6727	194	if (!set_op && !is_addrtype_inet(&daddr)) {
9450c5ec PA	195	fprintf(stderr, "geneve: remote link partner not specified\n");
	196	return -1;
	197	}
908755dc JL	198	}
	199
	200	addattr32(n, 1024, IFLA_GENEVE_ID, vni);
6c4b6727 SP	201	if (is_addrtype_inet(&daddr)) {
	202	int type = (daddr.family == AF_INET) ? IFLA_GENEVE_REMOTE :
	203	IFLA_GENEVE_REMOTE6;
f5393225	204	addattr_l(n, 1024, type, daddr.data, daddr.bytelen);
c2a85c3b GM	205	}
	206	if (!set_op \|\| GENEVE_ATTRSET(attrs, IFLA_GENEVE_LABEL))
	207	addattr32(n, 1024, IFLA_GENEVE_LABEL, label);
	208	if (!set_op \|\| GENEVE_ATTRSET(attrs, IFLA_GENEVE_TTL))
	209	addattr8(n, 1024, IFLA_GENEVE_TTL, ttl);
	210	if (!set_op \|\| GENEVE_ATTRSET(attrs, IFLA_GENEVE_TOS))
	211	addattr8(n, 1024, IFLA_GENEVE_TOS, tos);
9450c5ec PA	212	if (dstport)
	213	addattr16(n, 1024, IFLA_GENEVE_PORT, htons(dstport));
	214	if (metadata)
	215	addattr(n, 1024, IFLA_GENEVE_COLLECT_METADATA);
c2a85c3b	216	if (GENEVE_ATTRSET(attrs, IFLA_GENEVE_UDP_CSUM))
325d02b4	217	addattr8(n, 1024, IFLA_GENEVE_UDP_CSUM, udpcsum);
c2a85c3b	218	if (GENEVE_ATTRSET(attrs, IFLA_GENEVE_UDP_ZERO_CSUM6_TX))
325d02b4	219	addattr8(n, 1024, IFLA_GENEVE_UDP_ZERO_CSUM6_TX, udp6zerocsumtx);
c2a85c3b	220	if (GENEVE_ATTRSET(attrs, IFLA_GENEVE_UDP_ZERO_CSUM6_RX))
325d02b4	221	addattr8(n, 1024, IFLA_GENEVE_UDP_ZERO_CSUM6_RX, udp6zerocsumrx);
908755dc JL	222
	223	return 0;
	224	}
	225
	226	static void geneve_print_opt(struct link_util lu, FILE f, struct rtattr *tb[])
	227	{
	228	__u32 vni;
375560c4	229	__u8 ttl = 0;
3caa526c	230	__u8 tos = 0;
908755dc JL	231
	232	if (!tb)
	233	return;
	234
00ff4b8e SP	235	if (tb[IFLA_GENEVE_COLLECT_METADATA]) {
	236	print_bool(PRINT_ANY, "external", "external", true);
	237	return;
	238	}
	239
908755dc JL	240	if (!tb[IFLA_GENEVE_ID] \|\|
	241	RTA_PAYLOAD(tb[IFLA_GENEVE_ID]) < sizeof(__u32))
	242	return;
	243
	244	vni = rta_getattr_u32(tb[IFLA_GENEVE_ID]);
119fae0a	245	print_uint(PRINT_ANY, "id", "id %u ", vni);
908755dc JL	246
	247	if (tb[IFLA_GENEVE_REMOTE]) {
	248	__be32 addr = rta_getattr_u32(tb[IFLA_GENEVE_REMOTE]);
56f5daac	249
908755dc	250	if (addr)
119fae0a JF	251	print_string(PRINT_ANY,
	252	"remote",
	253	"remote %s ",
	254	format_host(AF_INET, 4, &addr));
906ac543 JL	255	} else if (tb[IFLA_GENEVE_REMOTE6]) {
906ac543 JL	256	struct in6_addr addr;
56f5daac	257
906ac543	258	memcpy(&addr, RTA_DATA(tb[IFLA_GENEVE_REMOTE6]), sizeof(struct in6_addr));
1f4c51c0	259	if (!IN6_IS_ADDR_UNSPECIFIED(&addr)) {
2642b6b0	260	if (!IN6_IS_ADDR_MULTICAST(&addr))
119fae0a JF	261	print_string(PRINT_ANY,
	262	"remote6",
	263	"remote %s ",
	264	format_host(AF_INET6,
	265	sizeof(struct in6_addr),
	266	&addr));
906ac543	267	}
908755dc	268	}
f4c05c2e	269
35b857f9 HL	270	if (tb[IFLA_GENEVE_TTL_INHERIT] &&
35b857f9 HL	271	rta_getattr_u8(tb[IFLA_GENEVE_TTL_INHERIT])) {
375560c4	272	print_string(PRINT_FP, NULL, "ttl %s ", "inherit");
35b857f9 HL	273	} else if (tb[IFLA_GENEVE_TTL]) {
	274	ttl = rta_getattr_u8(tb[IFLA_GENEVE_TTL]);
	275	if (is_json_context() \|\| ttl)
	276	print_uint(PRINT_ANY, "ttl", "ttl %u ", ttl);
	277	else
	278	print_string(PRINT_FP, NULL, "ttl %s ", "auto");
	279	}
f4739b2e	280
3caa526c SP	281	if (tb[IFLA_GENEVE_TOS])
	282	tos = rta_getattr_u8(tb[IFLA_GENEVE_TOS]);
	283	if (tos) {
	284	if (is_json_context() \|\| tos != 1)
90c5c969	285	print_0xhex(PRINT_ANY, "tos", "tos %#llx ", tos);
3caa526c SP	286	else
3caa526c SP	287	print_string(PRINT_FP, NULL, "tos %s ", "inherit");
f4739b2e	288	}
9450c5ec	289
29bb2373 DB	290	if (tb[IFLA_GENEVE_LABEL]) {
	291	__u32 label = rta_getattr_u32(tb[IFLA_GENEVE_LABEL]);
	292
	293	if (label)
119fae0a	294	print_0xhex(PRINT_ANY,
90c5c969	295	"label", "flowlabel %#llx ",
119fae0a	296	ntohl(label));
29bb2373 DB	297	}
29bb2373 DB	298
9450c5ec	299	if (tb[IFLA_GENEVE_PORT])
119fae0a JF	300	print_uint(PRINT_ANY,
	301	"port",
	302	"dstport %u ",
	303	rta_getattr_be16(tb[IFLA_GENEVE_PORT]));
9450c5ec	304
325d02b4	305	if (tb[IFLA_GENEVE_UDP_CSUM]) {
119fae0a JF	306	if (is_json_context()) {
	307	print_bool(PRINT_JSON,
	308	"udp_csum",
	309	NULL,
	310	rta_getattr_u8(tb[IFLA_GENEVE_UDP_CSUM]));
	311	} else {
	312	if (!rta_getattr_u8(tb[IFLA_GENEVE_UDP_CSUM]))
	313	fputs("no", f);
	314	fputs("udpcsum ", f);
	315	}
325d02b4 JG	316	}
	317
	318	if (tb[IFLA_GENEVE_UDP_ZERO_CSUM6_TX]) {
119fae0a JF	319	if (is_json_context()) {
	320	print_bool(PRINT_JSON,
	321	"udp_zero_csum6_tx",
	322	NULL,
	323	rta_getattr_u8(tb[IFLA_GENEVE_UDP_ZERO_CSUM6_TX]));
	324	} else {
	325	if (!rta_getattr_u8(tb[IFLA_GENEVE_UDP_ZERO_CSUM6_TX]))
	326	fputs("no", f);
	327	fputs("udp6zerocsumtx ", f);
	328	}
325d02b4 JG	329	}
	330
	331	if (tb[IFLA_GENEVE_UDP_ZERO_CSUM6_RX]) {
119fae0a JF	332	if (is_json_context()) {
	333	print_bool(PRINT_JSON,
	334	"udp_zero_csum6_rx",
	335	NULL,
	336	rta_getattr_u8(tb[IFLA_GENEVE_UDP_ZERO_CSUM6_RX]));
	337	} else {
	338	if (!rta_getattr_u8(tb[IFLA_GENEVE_UDP_ZERO_CSUM6_RX]))
	339	fputs("no", f);
	340	fputs("udp6zerocsumrx ", f);
	341	}
325d02b4	342	}
908755dc JL	343	}
	344
	345	static void geneve_print_help(struct link_util lu, int argc, char *argv,
	346	FILE *f)
	347	{
	348	print_explain(f);
	349	}
	350
	351	struct link_util geneve_link_util = {
	352	.id = "geneve",
	353	.maxattr = IFLA_GENEVE_MAX,
	354	.parse_opt = geneve_parse_opt,
	355	.print_opt = geneve_print_opt,
	356	.print_help = geneve_print_help,
	357	};