[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"
		"                  [ df DF ]\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"
		"       DF    := { unset | set | 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, "df")) {
			enum ifla_geneve_df df;

			NEXT_ARG();
			check_duparg(&attrs, IFLA_GENEVE_DF, "df", *argv);
			if (strcmp(*argv, "unset") == 0)
				df = GENEVE_DF_UNSET;
			else if (strcmp(*argv, "set") == 0)
				df = GENEVE_DF_SET;
			else if (strcmp(*argv, "inherit") == 0)
				df = GENEVE_DF_INHERIT;
			else
				invarg("DF must be 'unset', 'set' or 'inherit'",
				       *argv);

			addattr8(n, 1024, IFLA_GENEVE_DF, df);
		} 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_DF]) {
		enum ifla_geneve_df df = rta_getattr_u8(tb[IFLA_GENEVE_DF]);

		if (df == GENEVE_DF_UNSET)
			print_string(PRINT_JSON, "df", "df %s ", "unset");
		else if (df == GENEVE_DF_SET)
			print_string(PRINT_ANY, "df", "df %s ", "set");
		else if (df == GENEVE_DF_INHERIT)
			print_string(PRINT_ANY, "df", "df %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"
64dbd03e	27	" [ df DF ]\n"
8b471354 PS	28	" [ flowlabel LABEL ]\n"
	29	" [ dstport PORT ]\n"
	30	" [ [no]external ]\n"
	31	" [ [no]udpcsum ]\n"
	32	" [ [no]udp6zerocsumtx ]\n"
	33	" [ [no]udp6zerocsumrx ]\n"
	34	"\n"
	35	"Where: VNI := 0-16777215\n"
	36	" ADDR := IP_ADDRESS\n"
	37	" TOS := { NUMBER \| inherit }\n"
35b857f9	38	" TTL := { 1..255 \| auto \| inherit }\n"
64dbd03e	39	" DF := { unset \| set \| inherit }\n"
8b471354 PS	40	" LABEL := 0-1048575\n"
8b471354 PS	41	);
908755dc JL	42	}
	43
	44	static void explain(void)
	45	{
	46	print_explain(stderr);
	47	}
	48
c2a85c3b GM	49	static void check_duparg(__u64 attrs, int type, const char key,
	50	const char *argv)
	51	{
	52	if (!GENEVE_ATTRSET(*attrs, type)) {
	53	*attrs \|= (1L << type);
	54	return;
	55	}
	56	duparg2(key, argv);
	57	}
	58
908755dc JL	59	static int geneve_parse_opt(struct link_util lu, int argc, char *argv,
	60	struct nlmsghdr *n)
	61	{
6c4b6727	62	inet_prefix daddr;
908755dc	63	__u32 vni = 0;
29bb2373	64	__u32 label = 0;
f4c05c2e	65	__u8 ttl = 0;
f4739b2e	66	__u8 tos = 0;
9450c5ec PA	67	__u16 dstport = 0;
9450c5ec PA	68	bool metadata = 0;
325d02b4	69	__u8 udpcsum = 0;
325d02b4	70	__u8 udp6zerocsumtx = 0;
325d02b4	71	__u8 udp6zerocsumrx = 0;
c2a85c3b GM	72	__u64 attrs = 0;
	73	bool set_op = (n->nlmsg_type == RTM_NEWLINK &&
	74	!(n->nlmsg_flags & NLM_F_CREATE));
908755dc	75
9cc173d4	76	inet_prefix_reset(&daddr);
6c4b6727	77
908755dc JL	78	while (argc > 0) {
	79	if (!matches(*argv, "id") \|\|
	80	!matches(*argv, "vni")) {
	81	NEXT_ARG();
c2a85c3b	82	check_duparg(&attrs, IFLA_GENEVE_ID, "id", *argv);
908755dc JL	83	if (get_u32(&vni, *argv, 0) \|\|
	84	vni >= 1u << 24)
	85	invarg("invalid id", *argv);
908755dc JL	86	} else if (!matches(*argv, "remote")) {
908755dc JL	87	NEXT_ARG();
c2a85c3b GM	88	check_duparg(&attrs, IFLA_GENEVE_REMOTE, "remote",
c2a85c3b GM	89	*argv);
6c4b6727 SP	90	get_addr(&daddr, *argv, AF_UNSPEC);
6c4b6727 SP	91	if (!is_addrtype_inet_not_multi(&daddr))
908755dc	92	invarg("invalid remote address", *argv);
f4c05c2e JL	93	} else if (!matches(*argv, "ttl") \|\|
f4c05c2e JL	94	!matches(*argv, "hoplimit")) {
56f5daac	95	unsigned int uval;
f4c05c2e JL	96
f4c05c2e JL	97	NEXT_ARG();
c2a85c3b	98	check_duparg(&attrs, IFLA_GENEVE_TTL, "ttl", *argv);
35b857f9 HL	99	if (strcmp(*argv, "inherit") == 0) {
	100	addattr8(n, 1024, IFLA_GENEVE_TTL_INHERIT, 1);
	101	} else if (strcmp(*argv, "auto") != 0) {
f4c05c2e JL	102	if (get_unsigned(&uval, *argv, 0))
	103	invarg("invalid TTL", *argv);
	104	if (uval > 255)
	105	invarg("TTL must be <= 255", *argv);
	106	ttl = uval;
	107	}
f4739b2e JL	108	} else if (!matches(*argv, "tos") \|\|
	109	!matches(*argv, "dsfield")) {
	110	__u32 uval;
	111
	112	NEXT_ARG();
c2a85c3b	113	check_duparg(&attrs, IFLA_GENEVE_TOS, "tos", *argv);
f4739b2e JL	114	if (strcmp(*argv, "inherit") != 0) {
	115	if (rtnl_dsfield_a2n(&uval, *argv))
	116	invarg("bad TOS value", *argv);
	117	tos = uval;
	118	} else
	119	tos = 1;
64dbd03e SB	120	} else if (!matches(*argv, "df")) {
	121	enum ifla_geneve_df df;
	122
	123	NEXT_ARG();
	124	check_duparg(&attrs, IFLA_GENEVE_DF, "df", *argv);
	125	if (strcmp(*argv, "unset") == 0)
	126	df = GENEVE_DF_UNSET;
	127	else if (strcmp(*argv, "set") == 0)
	128	df = GENEVE_DF_SET;
	129	else if (strcmp(*argv, "inherit") == 0)
	130	df = GENEVE_DF_INHERIT;
	131	else
	132	invarg("DF must be 'unset', 'set' or 'inherit'",
	133	*argv);
	134
	135	addattr8(n, 1024, IFLA_GENEVE_DF, df);
29bb2373 DB	136	} else if (!matches(*argv, "label") \|\|
	137	!matches(*argv, "flowlabel")) {
	138	__u32 uval;
	139
	140	NEXT_ARG();
c2a85c3b GM	141	check_duparg(&attrs, IFLA_GENEVE_LABEL, "flowlabel",
c2a85c3b GM	142	*argv);
29bb2373 DB	143	if (get_u32(&uval, *argv, 0) \|\|
	144	(uval & ~LABEL_MAX_MASK))
	145	invarg("invalid flowlabel", *argv);
	146	label = htonl(uval);
9450c5ec PA	147	} else if (!matches(*argv, "dstport")) {
9450c5ec PA	148	NEXT_ARG();
c2a85c3b GM	149	check_duparg(&attrs, IFLA_GENEVE_PORT, "dstport",
c2a85c3b GM	150	*argv);
9450c5ec PA	151	if (get_u16(&dstport, *argv, 0))
	152	invarg("dstport", *argv);
	153	} else if (!matches(*argv, "external")) {
c2a85c3b GM	154	check_duparg(&attrs, IFLA_GENEVE_COLLECT_METADATA,
c2a85c3b GM	155	argv, argv);
9450c5ec PA	156	metadata = true;
9450c5ec PA	157	} else if (!matches(*argv, "noexternal")) {
c2a85c3b GM	158	check_duparg(&attrs, IFLA_GENEVE_COLLECT_METADATA,
c2a85c3b GM	159	argv, argv);
9450c5ec	160	metadata = false;
325d02b4	161	} else if (!matches(*argv, "udpcsum")) {
c2a85c3b GM	162	check_duparg(&attrs, IFLA_GENEVE_UDP_CSUM, *argv,
c2a85c3b GM	163	*argv);
325d02b4	164	udpcsum = 1;
325d02b4	165	} else if (!matches(*argv, "noudpcsum")) {
c2a85c3b GM	166	check_duparg(&attrs, IFLA_GENEVE_UDP_CSUM, *argv,
c2a85c3b GM	167	*argv);
325d02b4	168	udpcsum = 0;
325d02b4	169	} else if (!matches(*argv, "udp6zerocsumtx")) {
c2a85c3b GM	170	check_duparg(&attrs, IFLA_GENEVE_UDP_ZERO_CSUM6_TX,
c2a85c3b GM	171	argv, argv);
325d02b4	172	udp6zerocsumtx = 1;
325d02b4	173	} else if (!matches(*argv, "noudp6zerocsumtx")) {
c2a85c3b GM	174	check_duparg(&attrs, IFLA_GENEVE_UDP_ZERO_CSUM6_TX,
c2a85c3b GM	175	argv, argv);
325d02b4	176	udp6zerocsumtx = 0;
325d02b4	177	} else if (!matches(*argv, "udp6zerocsumrx")) {
c2a85c3b GM	178	check_duparg(&attrs, IFLA_GENEVE_UDP_ZERO_CSUM6_RX,
c2a85c3b GM	179	argv, argv);
325d02b4	180	udp6zerocsumrx = 1;
325d02b4	181	} else if (!matches(*argv, "noudp6zerocsumrx")) {
c2a85c3b GM	182	check_duparg(&attrs, IFLA_GENEVE_UDP_ZERO_CSUM6_RX,
c2a85c3b GM	183	argv, argv);
325d02b4	184	udp6zerocsumrx = 0;
908755dc JL	185	} else if (matches(*argv, "help") == 0) {
	186	explain();
	187	return -1;
	188	} else {
	189	fprintf(stderr, "geneve: unknown command \"%s\"?\n", *argv);
	190	explain();
	191	return -1;
	192	}
	193	argc--, argv++;
	194	}
	195
c2a85c3b	196	if (metadata && GENEVE_ATTRSET(attrs, IFLA_GENEVE_ID)) {
9450c5ec	197	fprintf(stderr, "geneve: both 'external' and vni cannot be specified\n");
908755dc JL	198	return -1;
	199	}
	200
9450c5ec PA	201	if (!metadata) {
9450c5ec PA	202	/* parameter checking make sense only for full geneve tunnels */
c2a85c3b	203	if (!GENEVE_ATTRSET(attrs, IFLA_GENEVE_ID)) {
9450c5ec PA	204	fprintf(stderr, "geneve: missing virtual network identifier\n");
	205	return -1;
	206	}
	207
c2a85c3b GM	208	/* If we are modifying the geneve device, then we only need the
	209	* ID (VNI) to identify the geneve device, and we do not need
	210	* the remote IP.
	211	*/
6c4b6727	212	if (!set_op && !is_addrtype_inet(&daddr)) {
9450c5ec PA	213	fprintf(stderr, "geneve: remote link partner not specified\n");
	214	return -1;
	215	}
908755dc JL	216	}
	217
	218	addattr32(n, 1024, IFLA_GENEVE_ID, vni);
6c4b6727 SP	219	if (is_addrtype_inet(&daddr)) {
	220	int type = (daddr.family == AF_INET) ? IFLA_GENEVE_REMOTE :
	221	IFLA_GENEVE_REMOTE6;
f5393225	222	addattr_l(n, 1024, type, daddr.data, daddr.bytelen);
c2a85c3b GM	223	}
	224	if (!set_op \|\| GENEVE_ATTRSET(attrs, IFLA_GENEVE_LABEL))
	225	addattr32(n, 1024, IFLA_GENEVE_LABEL, label);
	226	if (!set_op \|\| GENEVE_ATTRSET(attrs, IFLA_GENEVE_TTL))
	227	addattr8(n, 1024, IFLA_GENEVE_TTL, ttl);
	228	if (!set_op \|\| GENEVE_ATTRSET(attrs, IFLA_GENEVE_TOS))
	229	addattr8(n, 1024, IFLA_GENEVE_TOS, tos);
9450c5ec PA	230	if (dstport)
	231	addattr16(n, 1024, IFLA_GENEVE_PORT, htons(dstport));
	232	if (metadata)
	233	addattr(n, 1024, IFLA_GENEVE_COLLECT_METADATA);
c2a85c3b	234	if (GENEVE_ATTRSET(attrs, IFLA_GENEVE_UDP_CSUM))
325d02b4	235	addattr8(n, 1024, IFLA_GENEVE_UDP_CSUM, udpcsum);
c2a85c3b	236	if (GENEVE_ATTRSET(attrs, IFLA_GENEVE_UDP_ZERO_CSUM6_TX))
325d02b4	237	addattr8(n, 1024, IFLA_GENEVE_UDP_ZERO_CSUM6_TX, udp6zerocsumtx);
c2a85c3b	238	if (GENEVE_ATTRSET(attrs, IFLA_GENEVE_UDP_ZERO_CSUM6_RX))
325d02b4	239	addattr8(n, 1024, IFLA_GENEVE_UDP_ZERO_CSUM6_RX, udp6zerocsumrx);
908755dc JL	240
	241	return 0;
	242	}
	243
	244	static void geneve_print_opt(struct link_util lu, FILE f, struct rtattr *tb[])
	245	{
	246	__u32 vni;
375560c4	247	__u8 ttl = 0;
3caa526c	248	__u8 tos = 0;
908755dc JL	249
	250	if (!tb)
	251	return;
	252
00ff4b8e SP	253	if (tb[IFLA_GENEVE_COLLECT_METADATA]) {
	254	print_bool(PRINT_ANY, "external", "external", true);
	255	return;
	256	}
	257
908755dc JL	258	if (!tb[IFLA_GENEVE_ID] \|\|
	259	RTA_PAYLOAD(tb[IFLA_GENEVE_ID]) < sizeof(__u32))
	260	return;
	261
	262	vni = rta_getattr_u32(tb[IFLA_GENEVE_ID]);
119fae0a	263	print_uint(PRINT_ANY, "id", "id %u ", vni);
908755dc JL	264
	265	if (tb[IFLA_GENEVE_REMOTE]) {
	266	__be32 addr = rta_getattr_u32(tb[IFLA_GENEVE_REMOTE]);
56f5daac	267
908755dc	268	if (addr)
119fae0a JF	269	print_string(PRINT_ANY,
	270	"remote",
	271	"remote %s ",
	272	format_host(AF_INET, 4, &addr));
906ac543 JL	273	} else if (tb[IFLA_GENEVE_REMOTE6]) {
906ac543 JL	274	struct in6_addr addr;
56f5daac	275
906ac543	276	memcpy(&addr, RTA_DATA(tb[IFLA_GENEVE_REMOTE6]), sizeof(struct in6_addr));
1f4c51c0	277	if (!IN6_IS_ADDR_UNSPECIFIED(&addr)) {
2642b6b0	278	if (!IN6_IS_ADDR_MULTICAST(&addr))
119fae0a JF	279	print_string(PRINT_ANY,
	280	"remote6",
	281	"remote %s ",
	282	format_host(AF_INET6,
	283	sizeof(struct in6_addr),
	284	&addr));
906ac543	285	}
908755dc	286	}
f4c05c2e	287
35b857f9 HL	288	if (tb[IFLA_GENEVE_TTL_INHERIT] &&
35b857f9 HL	289	rta_getattr_u8(tb[IFLA_GENEVE_TTL_INHERIT])) {
375560c4	290	print_string(PRINT_FP, NULL, "ttl %s ", "inherit");
35b857f9 HL	291	} else if (tb[IFLA_GENEVE_TTL]) {
	292	ttl = rta_getattr_u8(tb[IFLA_GENEVE_TTL]);
	293	if (is_json_context() \|\| ttl)
	294	print_uint(PRINT_ANY, "ttl", "ttl %u ", ttl);
	295	else
	296	print_string(PRINT_FP, NULL, "ttl %s ", "auto");
	297	}
f4739b2e	298
3caa526c SP	299	if (tb[IFLA_GENEVE_TOS])
	300	tos = rta_getattr_u8(tb[IFLA_GENEVE_TOS]);
	301	if (tos) {
	302	if (is_json_context() \|\| tos != 1)
90c5c969	303	print_0xhex(PRINT_ANY, "tos", "tos %#llx ", tos);
3caa526c SP	304	else
3caa526c SP	305	print_string(PRINT_FP, NULL, "tos %s ", "inherit");
f4739b2e	306	}
9450c5ec	307
64dbd03e SB	308	if (tb[IFLA_GENEVE_DF]) {
	309	enum ifla_geneve_df df = rta_getattr_u8(tb[IFLA_GENEVE_DF]);
	310
	311	if (df == GENEVE_DF_UNSET)
	312	print_string(PRINT_JSON, "df", "df %s ", "unset");
	313	else if (df == GENEVE_DF_SET)
	314	print_string(PRINT_ANY, "df", "df %s ", "set");
	315	else if (df == GENEVE_DF_INHERIT)
	316	print_string(PRINT_ANY, "df", "df %s ", "inherit");
	317	}
	318
29bb2373 DB	319	if (tb[IFLA_GENEVE_LABEL]) {
	320	__u32 label = rta_getattr_u32(tb[IFLA_GENEVE_LABEL]);
	321
	322	if (label)
119fae0a	323	print_0xhex(PRINT_ANY,
90c5c969	324	"label", "flowlabel %#llx ",
119fae0a	325	ntohl(label));
29bb2373 DB	326	}
29bb2373 DB	327
9450c5ec	328	if (tb[IFLA_GENEVE_PORT])
119fae0a JF	329	print_uint(PRINT_ANY,
	330	"port",
	331	"dstport %u ",
	332	rta_getattr_be16(tb[IFLA_GENEVE_PORT]));
9450c5ec	333
325d02b4	334	if (tb[IFLA_GENEVE_UDP_CSUM]) {
119fae0a JF	335	if (is_json_context()) {
	336	print_bool(PRINT_JSON,
	337	"udp_csum",
	338	NULL,
	339	rta_getattr_u8(tb[IFLA_GENEVE_UDP_CSUM]));
	340	} else {
	341	if (!rta_getattr_u8(tb[IFLA_GENEVE_UDP_CSUM]))
	342	fputs("no", f);
	343	fputs("udpcsum ", f);
	344	}
325d02b4 JG	345	}
	346
	347	if (tb[IFLA_GENEVE_UDP_ZERO_CSUM6_TX]) {
119fae0a JF	348	if (is_json_context()) {
	349	print_bool(PRINT_JSON,
	350	"udp_zero_csum6_tx",
	351	NULL,
	352	rta_getattr_u8(tb[IFLA_GENEVE_UDP_ZERO_CSUM6_TX]));
	353	} else {
	354	if (!rta_getattr_u8(tb[IFLA_GENEVE_UDP_ZERO_CSUM6_TX]))
	355	fputs("no", f);
	356	fputs("udp6zerocsumtx ", f);
	357	}
325d02b4 JG	358	}
	359
	360	if (tb[IFLA_GENEVE_UDP_ZERO_CSUM6_RX]) {
119fae0a JF	361	if (is_json_context()) {
	362	print_bool(PRINT_JSON,
	363	"udp_zero_csum6_rx",
	364	NULL,
	365	rta_getattr_u8(tb[IFLA_GENEVE_UDP_ZERO_CSUM6_RX]));
	366	} else {
	367	if (!rta_getattr_u8(tb[IFLA_GENEVE_UDP_ZERO_CSUM6_RX]))
	368	fputs("no", f);
	369	fputs("udp6zerocsumrx ", f);
	370	}
325d02b4	371	}
908755dc JL	372	}
	373
	374	static void geneve_print_help(struct link_util lu, int argc, char *argv,
	375	FILE *f)
	376	{
	377	print_explain(f);
	378	}
	379
	380	struct link_util geneve_link_util = {
	381	.id = "geneve",
	382	.maxattr = IFLA_GENEVE_MAX,
	383	.parse_opt = geneve_parse_opt,
	384	.print_opt = geneve_print_opt,
	385	.print_help = geneve_print_help,
	386	};