[mirror_iproute2.git] / bridge / fdb.c

/* SPDX-License-Identifier: GPL-2.0 */
/*
 * Get/set/delete fdb table with netlink
 *
 * TODO: merge/replace this with ip neighbour
 *
 * Authors:	Stephen Hemminger <shemminger@vyatta.com>
 */

#include <stdio.h>
#include <stdlib.h>
#include <unistd.h>
#include <netdb.h>
#include <time.h>
#include <fcntl.h>
#include <sys/socket.h>
#include <sys/time.h>
#include <net/if.h>
#include <netinet/in.h>
#include <linux/if_bridge.h>
#include <linux/if_ether.h>
#include <linux/neighbour.h>
#include <string.h>
#include <limits.h>
#include <json_writer.h>
#include <stdbool.h>

#include "libnetlink.h"
#include "br_common.h"
#include "rt_names.h"
#include "utils.h"

static unsigned int filter_index, filter_vlan, filter_state;

json_writer_t *jw_global;

static void usage(void)
{
	fprintf(stderr,
		"Usage: bridge fdb { add | append | del | replace } ADDR dev DEV\n"
		"              [ self ] [ master ] [ use ] [ router ]\n"
		"              [ local | static | dynamic ] [ dst IPADDR ] [ vlan VID ]\n"
		"              [ port PORT] [ vni VNI ] [ via DEV ]\n"
		"       bridge fdb [ show [ br BRDEV ] [ brport DEV ] [ vlan VID ] [ state STATE ] ]\n");
	exit(-1);
}

static const char *state_n2a(unsigned int s)
{
	static char buf[32];

	if (s & NUD_PERMANENT)
		return "permanent";

	if (s & NUD_NOARP)
		return "static";

	if (s & NUD_STALE)
		return "stale";

	if (s & NUD_REACHABLE)
		return "";

	sprintf(buf, "state=%#x", s);
	return buf;
}

static int state_a2n(unsigned int *s, const char *arg)
{
	if (matches(arg, "permanent") == 0)
		*s = NUD_PERMANENT;
	else if (matches(arg, "static") == 0 || matches(arg, "temp") == 0)
		*s = NUD_NOARP;
	else if (matches(arg, "stale") == 0)
		*s = NUD_STALE;
	else if (matches(arg, "reachable") == 0 || matches(arg, "dynamic") == 0)
		*s = NUD_REACHABLE;
	else if (strcmp(arg, "all") == 0)
		*s = ~0;
	else if (get_unsigned(s, arg, 0))
		return -1;

	return 0;
}

static void start_json_fdb_flags_array(bool *fdb_flags)
{
	if (*fdb_flags)
		return;
	jsonw_name(jw_global, "flags");
	jsonw_start_array(jw_global);
	*fdb_flags = true;
}

int print_fdb(const struct sockaddr_nl *who, struct nlmsghdr *n, void *arg)
{
	FILE *fp = arg;
	struct ndmsg *r = NLMSG_DATA(n);
	int len = n->nlmsg_len;
	struct rtattr *tb[NDA_MAX+1];
	__u16 vid = 0;
	bool fdb_flags = false;
	const char *state_s;

	if (n->nlmsg_type != RTM_NEWNEIGH && n->nlmsg_type != RTM_DELNEIGH) {
		fprintf(stderr, "Not RTM_NEWNEIGH: %08x %08x %08x\n",
			n->nlmsg_len, n->nlmsg_type, n->nlmsg_flags);
		return 0;
	}

	len -= NLMSG_LENGTH(sizeof(*r));
	if (len < 0) {
		fprintf(stderr, "BUG: wrong nlmsg len %d\n", len);
		return -1;
	}

	if (r->ndm_family != AF_BRIDGE)
		return 0;

	if (filter_index && filter_index != r->ndm_ifindex)
		return 0;

	if (filter_state && !(r->ndm_state & filter_state))
		return 0;

	parse_rtattr(tb, NDA_MAX, NDA_RTA(r),
		     n->nlmsg_len - NLMSG_LENGTH(sizeof(*r)));

	if (tb[NDA_VLAN])
		vid = rta_getattr_u16(tb[NDA_VLAN]);

	if (filter_vlan && filter_vlan != vid)
		return 0;

	if (jw_global)
		jsonw_start_object(jw_global);

	if (n->nlmsg_type == RTM_DELNEIGH) {
		if (jw_global)
			jsonw_string_field(jw_global, "opCode", "deleted");
		else
			fprintf(fp, "Deleted ");
	}

	if (tb[NDA_LLADDR]) {
		SPRINT_BUF(b1);
		ll_addr_n2a(RTA_DATA(tb[NDA_LLADDR]),
			    RTA_PAYLOAD(tb[NDA_LLADDR]),
			    ll_index_to_type(r->ndm_ifindex),
			    b1, sizeof(b1));
		if (jw_global)
			jsonw_string_field(jw_global, "mac", b1);
		else
			fprintf(fp, "%s ", b1);
	}

	if (!filter_index && r->ndm_ifindex) {
		if (jw_global)
			jsonw_string_field(jw_global, "dev",
					   ll_index_to_name(r->ndm_ifindex));
		else
			fprintf(fp, "dev %s ",
				ll_index_to_name(r->ndm_ifindex));
	}

	if (tb[NDA_DST]) {
		int family = AF_INET;
		const char *abuf_s;

		if (RTA_PAYLOAD(tb[NDA_DST]) == sizeof(struct in6_addr))
			family = AF_INET6;

		abuf_s = format_host(family,
				     RTA_PAYLOAD(tb[NDA_DST]),
				     RTA_DATA(tb[NDA_DST]));
		if (jw_global)
			jsonw_string_field(jw_global, "dst", abuf_s);
		else
			fprintf(fp, "dst %s ", abuf_s);
	}

	if (vid) {
		if (jw_global)
			jsonw_uint_field(jw_global, "vlan", vid);
		else
			fprintf(fp, "vlan %hu ", vid);
	}

	if (tb[NDA_PORT]) {
		if (jw_global)
			jsonw_uint_field(jw_global, "port",
					 rta_getattr_be16(tb[NDA_PORT]));
		else
			fprintf(fp, "port %d ",
				rta_getattr_be16(tb[NDA_PORT]));
	}

	if (tb[NDA_VNI]) {
		if (jw_global)
			jsonw_uint_field(jw_global, "vni",
					 rta_getattr_u32(tb[NDA_VNI]));
		else
			fprintf(fp, "vni %d ",
				rta_getattr_u32(tb[NDA_VNI]));
	}

	if (tb[NDA_SRC_VNI]) {
		if (jw_global)
			jsonw_uint_field(jw_global, "src_vni",
					 rta_getattr_u32(tb[NDA_SRC_VNI]));
		else
			fprintf(fp, "src_vni %d ",
				rta_getattr_u32(tb[NDA_SRC_VNI]));
	}

	if (tb[NDA_IFINDEX]) {
		unsigned int ifindex = rta_getattr_u32(tb[NDA_IFINDEX]);

		if (ifindex) {
			if (!tb[NDA_LINK_NETNSID]) {
				const char *ifname = ll_index_to_name(ifindex);

				if (jw_global)
					jsonw_string_field(jw_global, "viaIf",
							   ifname);
				else
					fprintf(fp, "via %s ", ifname);
			} else {
				if (jw_global)
					jsonw_uint_field(jw_global, "viaIfIndex",
							 ifindex);
				else
					fprintf(fp, "via ifindex %u ", ifindex);
			}
		}
	}

	if (tb[NDA_LINK_NETNSID]) {
		if (jw_global)
			jsonw_uint_field(jw_global, "linkNetNsId",
					 rta_getattr_u32(tb[NDA_LINK_NETNSID]));
		else
			fprintf(fp, "link-netnsid %d ",
				rta_getattr_u32(tb[NDA_LINK_NETNSID]));
	}

	if (show_stats && tb[NDA_CACHEINFO]) {
		struct nda_cacheinfo *ci = RTA_DATA(tb[NDA_CACHEINFO]);
		int hz = get_user_hz();

		if (jw_global) {
			jsonw_uint_field(jw_global, "used",
				ci->ndm_used/hz);
			jsonw_uint_field(jw_global, "updated",
				ci->ndm_updated/hz);
		} else {
			fprintf(fp, "used %d/%d ", ci->ndm_used/hz,
					ci->ndm_updated/hz);
		}
	}

	if (jw_global) {
		if (r->ndm_flags & NTF_SELF) {
			start_json_fdb_flags_array(&fdb_flags);
			jsonw_string(jw_global, "self");
		}
		if (r->ndm_flags & NTF_ROUTER) {
			start_json_fdb_flags_array(&fdb_flags);
			jsonw_string(jw_global, "router");
		}
		if (r->ndm_flags & NTF_EXT_LEARNED) {
			start_json_fdb_flags_array(&fdb_flags);
			jsonw_string(jw_global, "extern_learn");
		}
		if (r->ndm_flags & NTF_OFFLOADED) {
			start_json_fdb_flags_array(&fdb_flags);
			jsonw_string(jw_global, "offload");
		}
		if (r->ndm_flags & NTF_MASTER)
			jsonw_string(jw_global, "master");
		if (fdb_flags)
			jsonw_end_array(jw_global);

		if (tb[NDA_MASTER])
			jsonw_string_field(jw_global,
					   "master",
					   ll_index_to_name(rta_getattr_u32(tb[NDA_MASTER])));

	} else {
		if (r->ndm_flags & NTF_SELF)
			fprintf(fp, "self ");
		if (r->ndm_flags & NTF_ROUTER)
			fprintf(fp, "router ");
		if (r->ndm_flags & NTF_EXT_LEARNED)
			fprintf(fp, "extern_learn ");
		if (r->ndm_flags & NTF_OFFLOADED)
			fprintf(fp, "offload ");
		if (tb[NDA_MASTER]) {
			fprintf(fp, "master %s ",
				ll_index_to_name(rta_getattr_u32(tb[NDA_MASTER])));
		} else if (r->ndm_flags & NTF_MASTER) {
			fprintf(fp, "master ");
		}
	}

	state_s = state_n2a(r->ndm_state);
	if (jw_global) {
		if (state_s[0])
			jsonw_string_field(jw_global, "state", state_s);

		jsonw_end_object(jw_global);
	} else {
		fprintf(fp, "%s\n", state_s);

		fflush(fp);
	}

	return 0;
}

static int fdb_show(int argc, char **argv)
{
	struct {
		struct nlmsghdr	n;
		struct ifinfomsg	ifm;
		char			buf[256];
	} req = {
		.n.nlmsg_len = NLMSG_LENGTH(sizeof(struct ifinfomsg)),
		.ifm.ifi_family = PF_BRIDGE,
	};

	char *filter_dev = NULL;
	char *br = NULL;
	int msg_size = sizeof(struct ifinfomsg);

	while (argc > 0) {
		if ((strcmp(*argv, "brport") == 0) || strcmp(*argv, "dev") == 0) {
			NEXT_ARG();
			filter_dev = *argv;
		} else if (strcmp(*argv, "br") == 0) {
			NEXT_ARG();
			br = *argv;
		} else if (strcmp(*argv, "vlan") == 0) {
			NEXT_ARG();
			if (filter_vlan)
				duparg("vlan", *argv);
			filter_vlan = atoi(*argv);
		} else if (strcmp(*argv, "state") == 0) {
			unsigned int state;

			NEXT_ARG();
			if (state_a2n(&state, *argv))
				invarg("invalid state", *argv);
			filter_state |= state;
		} else {
			if (matches(*argv, "help") == 0)
				usage();
		}
		argc--; argv++;
	}

	if (br) {
		int br_ifindex = ll_name_to_index(br);

		if (br_ifindex == 0) {
			fprintf(stderr, "Cannot find bridge device \"%s\"\n", br);
			return -1;
		}
		addattr32(&req.n, sizeof(req), IFLA_MASTER, br_ifindex);
		msg_size += RTA_LENGTH(4);
	}

	/*we'll keep around filter_dev for older kernels */
	if (filter_dev) {
		filter_index = ll_name_to_index(filter_dev);
		if (filter_index == 0) {
			fprintf(stderr, "Cannot find device \"%s\"\n",
				filter_dev);
			return -1;
		}
		req.ifm.ifi_index = filter_index;
	}

	if (rtnl_dump_request(&rth, RTM_GETNEIGH, &req.ifm, msg_size) < 0) {
		perror("Cannot send dump request");
		exit(1);
	}

	if (json) {
		jw_global = jsonw_new(stdout);
		if (!jw_global) {
			fprintf(stderr, "Error allocation json object\n");
			exit(1);
		}
		if (pretty)
			jsonw_pretty(jw_global, 1);

		jsonw_start_array(jw_global);
	}

	if (rtnl_dump_filter(&rth, print_fdb, stdout) < 0) {
		fprintf(stderr, "Dump terminated\n");
		exit(1);
	}
	if (jw_global) {
		jsonw_end_array(jw_global);
		jsonw_destroy(&jw_global);
	}

	return 0;
}

static int fdb_modify(int cmd, int flags, int argc, char **argv)
{
	struct {
		struct nlmsghdr	n;
		struct ndmsg		ndm;
		char			buf[256];
	} req = {
		.n.nlmsg_len = NLMSG_LENGTH(sizeof(struct ndmsg)),
		.n.nlmsg_flags = NLM_F_REQUEST | flags,
		.n.nlmsg_type = cmd,
		.ndm.ndm_family = PF_BRIDGE,
		.ndm.ndm_state = NUD_NOARP,
	};
	char *addr = NULL;
	char *d = NULL;
	char abuf[ETH_ALEN];
	int dst_ok = 0;
	inet_prefix dst;
	unsigned long port = 0;
	unsigned long vni = ~0;
	unsigned int via = 0;
	char *endptr;
	short vid = -1;

	while (argc > 0) {
		if (strcmp(*argv, "dev") == 0) {
			NEXT_ARG();
			d = *argv;
		} else if (strcmp(*argv, "dst") == 0) {
			NEXT_ARG();
			if (dst_ok)
				duparg2("dst", *argv);
			get_addr(&dst, *argv, preferred_family);
			dst_ok = 1;
		} else if (strcmp(*argv, "port") == 0) {

			NEXT_ARG();
			port = strtoul(*argv, &endptr, 0);
			if (endptr && *endptr) {
				struct servent *pse;

				pse = getservbyname(*argv, "udp");
				if (!pse)
					invarg("invalid port\n", *argv);
				port = ntohs(pse->s_port);
			} else if (port > 0xffff)
				invarg("invalid port\n", *argv);
		} else if (strcmp(*argv, "vni") == 0) {
			NEXT_ARG();
			vni = strtoul(*argv, &endptr, 0);
			if ((endptr && *endptr) ||
			    (vni >> 24) || vni == ULONG_MAX)
				invarg("invalid VNI\n", *argv);
		} else if (strcmp(*argv, "via") == 0) {
			NEXT_ARG();
			via = ll_name_to_index(*argv);
			if (via == 0)
				invarg("invalid device\n", *argv);
		} else if (strcmp(*argv, "self") == 0) {
			req.ndm.ndm_flags |= NTF_SELF;
		} else if (matches(*argv, "master") == 0) {
			req.ndm.ndm_flags |= NTF_MASTER;
		} else if (matches(*argv, "router") == 0) {
			req.ndm.ndm_flags |= NTF_ROUTER;
		} else if (matches(*argv, "local") == 0 ||
			   matches(*argv, "permanent") == 0) {
			req.ndm.ndm_state |= NUD_PERMANENT;
		} else if (matches(*argv, "temp") == 0 ||
			   matches(*argv, "static") == 0) {
			req.ndm.ndm_state |= NUD_REACHABLE;
		} else if (matches(*argv, "dynamic") == 0) {
			req.ndm.ndm_state |= NUD_REACHABLE;
			req.ndm.ndm_state &= ~NUD_NOARP;
		} else if (matches(*argv, "vlan") == 0) {
			if (vid >= 0)
				duparg2("vlan", *argv);
			NEXT_ARG();
			vid = atoi(*argv);
		} else if (matches(*argv, "use") == 0) {
			req.ndm.ndm_flags |= NTF_USE;
		} else {
			if (strcmp(*argv, "to") == 0)
				NEXT_ARG();

			if (matches(*argv, "help") == 0)
				usage();
			if (addr)
				duparg2("to", *argv);
			addr = *argv;
		}
		argc--; argv++;
	}

	if (d == NULL || addr == NULL) {
		fprintf(stderr, "Device and address are required arguments.\n");
		return -1;
	}

	/* Assume self */
	if (!(req.ndm.ndm_flags&(NTF_SELF|NTF_MASTER)))
		req.ndm.ndm_flags |= NTF_SELF;

	/* Assume permanent */
	if (!(req.ndm.ndm_state&(NUD_PERMANENT|NUD_REACHABLE)))
		req.ndm.ndm_state |= NUD_PERMANENT;

	if (sscanf(addr, "%hhx:%hhx:%hhx:%hhx:%hhx:%hhx",
		   abuf, abuf+1, abuf+2,
		   abuf+3, abuf+4, abuf+5) != 6) {
		fprintf(stderr, "Invalid mac address %s\n", addr);
		return -1;
	}

	addattr_l(&req.n, sizeof(req), NDA_LLADDR, abuf, ETH_ALEN);
	if (dst_ok)
		addattr_l(&req.n, sizeof(req), NDA_DST, &dst.data, dst.bytelen);

	if (vid >= 0)
		addattr16(&req.n, sizeof(req), NDA_VLAN, vid);

	if (port) {
		unsigned short dport;

		dport = htons((unsigned short)port);
		addattr16(&req.n, sizeof(req), NDA_PORT, dport);
	}
	if (vni != ~0)
		addattr32(&req.n, sizeof(req), NDA_VNI, vni);
	if (via)
		addattr32(&req.n, sizeof(req), NDA_IFINDEX, via);

	req.ndm.ndm_ifindex = ll_name_to_index(d);
	if (req.ndm.ndm_ifindex == 0) {
		fprintf(stderr, "Cannot find device \"%s\"\n", d);
		return -1;
	}

	if (rtnl_talk(&rth, &req.n, NULL) < 0)
		return -1;

	return 0;
}

int do_fdb(int argc, char **argv)
{
	ll_init_map(&rth);

	if (argc > 0) {
		if (matches(*argv, "add") == 0)
			return fdb_modify(RTM_NEWNEIGH, NLM_F_CREATE|NLM_F_EXCL, argc-1, argv+1);
		if (matches(*argv, "append") == 0)
			return fdb_modify(RTM_NEWNEIGH, NLM_F_CREATE|NLM_F_APPEND, argc-1, argv+1);
		if (matches(*argv, "replace") == 0)
			return fdb_modify(RTM_NEWNEIGH, NLM_F_CREATE|NLM_F_REPLACE, argc-1, argv+1);
		if (matches(*argv, "delete") == 0)
			return fdb_modify(RTM_DELNEIGH, 0, argc-1, argv+1);
		if (matches(*argv, "show") == 0 ||
		    matches(*argv, "lst") == 0 ||
		    matches(*argv, "list") == 0)
			return fdb_show(argc-1, argv+1);
		if (matches(*argv, "help") == 0)
			usage();
	} else
		return fdb_show(0, NULL);

	fprintf(stderr, "Command \"%s\" is unknown, try \"bridge fdb help\".\n", *argv);
	exit(-1);
}
Commit	Line	Data
6054c1eb	1	/* SPDX-License-Identifier: GPL-2.0 */
d04bc300 SH	2	/*
	3	* Get/set/delete fdb table with netlink
	4	*
0849e60a SH	5	* TODO: merge/replace this with ip neighbour
0849e60a SH	6	*
d04bc300 SH	7	* Authors: Stephen Hemminger <shemminger@vyatta.com>
	8	*/
	9
	10	#include <stdio.h>
	11	#include <stdlib.h>
	12	#include <unistd.h>
5f409678	13	#include <netdb.h>
d04bc300 SH	14	#include <time.h>
	15	#include <fcntl.h>
	16	#include <sys/socket.h>
	17	#include <sys/time.h>
	18	#include <net/if.h>
	19	#include <netinet/in.h>
	20	#include <linux/if_bridge.h>
	21	#include <linux/if_ether.h>
	22	#include <linux/neighbour.h>
	23	#include <string.h>
dd9cc0ee	24	#include <limits.h>
b239c56e AK	25	#include <json_writer.h>
b239c56e AK	26	#include <stdbool.h>
d04bc300 SH	27
	28	#include "libnetlink.h"
	29	#include "br_common.h"
0849e60a	30	#include "rt_names.h"
d04bc300 SH	31	#include "utils.h"
d04bc300 SH	32
7f10090b	33	static unsigned int filter_index, filter_vlan, filter_state;
d04bc300	34
b239c56e AK	35	json_writer_t *jw_global;
b239c56e AK	36
d04bc300 SH	37	static void usage(void)
d04bc300 SH	38	{
bcddcddd SH	39	fprintf(stderr,
	40	"Usage: bridge fdb { add \| append \| del \| replace } ADDR dev DEV\n"
	41	" [ self ] [ master ] [ use ] [ router ]\n"
	42	" [ local \| static \| dynamic ] [ dst IPADDR ] [ vlan VID ]\n"
	43	" [ port PORT] [ vni VNI ] [ via DEV ]\n"
	44	" bridge fdb [ show [ br BRDEV ] [ brport DEV ] [ vlan VID ] [ state STATE ] ]\n");
d04bc300 SH	45	exit(-1);
	46	}
	47
df4b043f	48	static const char *state_n2a(unsigned int s)
d04bc300 SH	49	{
	50	static char buf[32];
	51
0849e60a SH	52	if (s & NUD_PERMANENT)
0849e60a SH	53	return "permanent";
d04bc300 SH	54
	55	if (s & NUD_NOARP)
	56	return "static";
	57
	58	if (s & NUD_STALE)
	59	return "stale";
0849e60a	60
d04bc300 SH	61	if (s & NUD_REACHABLE)
	62	return "";
	63
	64	sprintf(buf, "state=%#x", s);
	65	return buf;
	66	}
	67
7f10090b NA	68	static int state_a2n(unsigned int s, const char arg)
	69	{
	70	if (matches(arg, "permanent") == 0)
	71	*s = NUD_PERMANENT;
	72	else if (matches(arg, "static") == 0 \|\| matches(arg, "temp") == 0)
	73	*s = NUD_NOARP;
	74	else if (matches(arg, "stale") == 0)
	75	*s = NUD_STALE;
	76	else if (matches(arg, "reachable") == 0 \|\| matches(arg, "dynamic") == 0)
	77	*s = NUD_REACHABLE;
	78	else if (strcmp(arg, "all") == 0)
	79	*s = ~0;
	80	else if (get_unsigned(s, arg, 0))
	81	return -1;
	82
	83	return 0;
	84	}
	85
b239c56e AK	86	static void start_json_fdb_flags_array(bool *fdb_flags)
	87	{
	88	if (*fdb_flags)
	89	return;
	90	jsonw_name(jw_global, "flags");
	91	jsonw_start_array(jw_global);
	92	*fdb_flags = true;
	93	}
	94
d04bc300 SH	95	int print_fdb(const struct sockaddr_nl who, struct nlmsghdr n, void *arg)
d04bc300 SH	96	{
0849e60a	97	FILE *fp = arg;
d04bc300 SH	98	struct ndmsg *r = NLMSG_DATA(n);
d04bc300 SH	99	int len = n->nlmsg_len;
df4b043f	100	struct rtattr *tb[NDA_MAX+1];
ae6eb907	101	__u16 vid = 0;
b239c56e AK	102	bool fdb_flags = false;
b239c56e AK	103	const char *state_s;
0849e60a SH	104
	105	if (n->nlmsg_type != RTM_NEWNEIGH && n->nlmsg_type != RTM_DELNEIGH) {
	106	fprintf(stderr, "Not RTM_NEWNEIGH: %08x %08x %08x\n",
	107	n->nlmsg_len, n->nlmsg_type, n->nlmsg_flags);
0849e60a SH	108	return 0;
0849e60a SH	109	}
d04bc300 SH	110
	111	len -= NLMSG_LENGTH(sizeof(*r));
	112	if (len < 0) {
	113	fprintf(stderr, "BUG: wrong nlmsg len %d\n", len);
	114	return -1;
	115	}
	116
	117	if (r->ndm_family != AF_BRIDGE)
	118	return 0;
	119
	120	if (filter_index && filter_index != r->ndm_ifindex)
	121	return 0;
	122
7f10090b NA	123	if (filter_state && !(r->ndm_state & filter_state))
	124	return 0;
	125
d04bc300 SH	126	parse_rtattr(tb, NDA_MAX, NDA_RTA(r),
	127	n->nlmsg_len - NLMSG_LENGTH(sizeof(*r)));
	128
ae6eb907 NA	129	if (tb[NDA_VLAN])
	130	vid = rta_getattr_u16(tb[NDA_VLAN]);
	131
	132	if (filter_vlan && filter_vlan != vid)
	133	return 0;
	134
01842eb5	135	if (jw_global)
afd3921e	136	jsonw_start_object(jw_global);
afd3921e	137
b239c56e AK	138	if (n->nlmsg_type == RTM_DELNEIGH) {
	139	if (jw_global)
	140	jsonw_string_field(jw_global, "opCode", "deleted");
	141	else
	142	fprintf(fp, "Deleted ");
	143	}
0849e60a SH	144
	145	if (tb[NDA_LLADDR]) {
	146	SPRINT_BUF(b1);
b239c56e AK	147	ll_addr_n2a(RTA_DATA(tb[NDA_LLADDR]),
	148	RTA_PAYLOAD(tb[NDA_LLADDR]),
	149	ll_index_to_type(r->ndm_ifindex),
	150	b1, sizeof(b1));
	151	if (jw_global)
	152	jsonw_string_field(jw_global, "mac", b1);
	153	else
	154	fprintf(fp, "%s ", b1);
d04bc300	155	}
38df7ac9	156
b239c56e AK	157	if (!filter_index && r->ndm_ifindex) {
	158	if (jw_global)
	159	jsonw_string_field(jw_global, "dev",
	160	ll_index_to_name(r->ndm_ifindex));
	161	else
	162	fprintf(fp, "dev %s ",
	163	ll_index_to_name(r->ndm_ifindex));
	164	}
0849e60a SH	165
0849e60a SH	166	if (tb[NDA_DST]) {
9e763fa5	167	int family = AF_INET;
b239c56e	168	const char *abuf_s;
9e763fa5 MR	169
	170	if (RTA_PAYLOAD(tb[NDA_DST]) == sizeof(struct in6_addr))
	171	family = AF_INET6;
	172
b239c56e AK	173	abuf_s = format_host(family,
	174	RTA_PAYLOAD(tb[NDA_DST]),
	175	RTA_DATA(tb[NDA_DST]));
	176	if (jw_global)
	177	jsonw_string_field(jw_global, "dst", abuf_s);
	178	else
	179	fprintf(fp, "dst %s ", abuf_s);
	180	}
	181
	182	if (vid) {
	183	if (jw_global)
	184	jsonw_uint_field(jw_global, "vlan", vid);
	185	else
	186	fprintf(fp, "vlan %hu ", vid);
	187	}
	188
	189	if (tb[NDA_PORT]) {
	190	if (jw_global)
	191	jsonw_uint_field(jw_global, "port",
aab0f610	192	rta_getattr_be16(tb[NDA_PORT]));
b239c56e AK	193	else
b239c56e AK	194	fprintf(fp, "port %d ",
aab0f610	195	rta_getattr_be16(tb[NDA_PORT]));
0849e60a	196	}
38df7ac9	197
b239c56e AK	198	if (tb[NDA_VNI]) {
	199	if (jw_global)
	200	jsonw_uint_field(jw_global, "vni",
	201	rta_getattr_u32(tb[NDA_VNI]));
	202	else
	203	fprintf(fp, "vni %d ",
	204	rta_getattr_u32(tb[NDA_VNI]));
	205	}
fd08839c	206
86d0988b RP	207	if (tb[NDA_SRC_VNI]) {
	208	if (jw_global)
	209	jsonw_uint_field(jw_global, "src_vni",
	210	rta_getattr_u32(tb[NDA_SRC_VNI]));
	211	else
	212	fprintf(fp, "src_vni %d ",
	213	rta_getattr_u32(tb[NDA_SRC_VNI]));
	214	}
	215
5f409678 DS	216	if (tb[NDA_IFINDEX]) {
	217	unsigned int ifindex = rta_getattr_u32(tb[NDA_IFINDEX]);
	218
	219	if (ifindex) {
45d3a6ef SP	220	if (!tb[NDA_LINK_NETNSID]) {
45d3a6ef SP	221	const char *ifname = ll_index_to_name(ifindex);
5f409678	222
b239c56e AK	223	if (jw_global)
	224	jsonw_string_field(jw_global, "viaIf",
	225	ifname);
	226	else
	227	fprintf(fp, "via %s ", ifname);
	228	} else {
	229	if (jw_global)
	230	jsonw_uint_field(jw_global, "viaIfIndex",
	231	ifindex);
	232	else
	233	fprintf(fp, "via ifindex %u ", ifindex);
	234	}
5f409678 DS	235	}
5f409678 DS	236	}
b239c56e AK	237
	238	if (tb[NDA_LINK_NETNSID]) {
	239	if (jw_global)
	240	jsonw_uint_field(jw_global, "linkNetNsId",
	241	rta_getattr_u32(tb[NDA_LINK_NETNSID]));
	242	else
	243	fprintf(fp, "link-netnsid %d ",
	244	rta_getattr_u32(tb[NDA_LINK_NETNSID]));
	245	}
5f409678	246
d04bc300 SH	247	if (show_stats && tb[NDA_CACHEINFO]) {
d04bc300 SH	248	struct nda_cacheinfo *ci = RTA_DATA(tb[NDA_CACHEINFO]);
0849e60a	249	int hz = get_user_hz();
d04bc300	250
b239c56e AK	251	if (jw_global) {
	252	jsonw_uint_field(jw_global, "used",
	253	ci->ndm_used/hz);
	254	jsonw_uint_field(jw_global, "updated",
	255	ci->ndm_updated/hz);
	256	} else {
	257	fprintf(fp, "used %d/%d ", ci->ndm_used/hz,
	258	ci->ndm_updated/hz);
	259	}
	260	}
	261
	262	if (jw_global) {
	263	if (r->ndm_flags & NTF_SELF) {
	264	start_json_fdb_flags_array(&fdb_flags);
	265	jsonw_string(jw_global, "self");
	266	}
	267	if (r->ndm_flags & NTF_ROUTER) {
	268	start_json_fdb_flags_array(&fdb_flags);
	269	jsonw_string(jw_global, "router");
	270	}
	271	if (r->ndm_flags & NTF_EXT_LEARNED) {
8a38e44f AS	272	start_json_fdb_flags_array(&fdb_flags);
	273	jsonw_string(jw_global, "extern_learn");
	274	}
	275	if (r->ndm_flags & NTF_OFFLOADED) {
b239c56e AK	276	start_json_fdb_flags_array(&fdb_flags);
	277	jsonw_string(jw_global, "offload");
	278	}
	279	if (r->ndm_flags & NTF_MASTER)
	280	jsonw_string(jw_global, "master");
	281	if (fdb_flags)
	282	jsonw_end_array(jw_global);
	283
	284	if (tb[NDA_MASTER])
	285	jsonw_string_field(jw_global,
	286	"master",
	287	ll_index_to_name(rta_getattr_u32(tb[NDA_MASTER])));
	288
	289	} else {
	290	if (r->ndm_flags & NTF_SELF)
	291	fprintf(fp, "self ");
	292	if (r->ndm_flags & NTF_ROUTER)
	293	fprintf(fp, "router ");
	294	if (r->ndm_flags & NTF_EXT_LEARNED)
8a38e44f AS	295	fprintf(fp, "extern_learn ");
8a38e44f AS	296	if (r->ndm_flags & NTF_OFFLOADED)
b239c56e AK	297	fprintf(fp, "offload ");
	298	if (tb[NDA_MASTER]) {
	299	fprintf(fp, "master %s ",
	300	ll_index_to_name(rta_getattr_u32(tb[NDA_MASTER])));
	301	} else if (r->ndm_flags & NTF_MASTER) {
	302	fprintf(fp, "master ");
	303	}
	304	}
	305
	306	state_s = state_n2a(r->ndm_state);
	307	if (jw_global) {
	308	if (state_s[0])
	309	jsonw_string_field(jw_global, "state", state_s);
	310
	311	jsonw_end_object(jw_global);
	312	} else {
	313	fprintf(fp, "%s\n", state_s);
	314
	315	fflush(fp);
d04bc300	316	}
4d45bf3b	317
d04bc300 SH	318	return 0;
	319	}
	320
	321	static int fdb_show(int argc, char **argv)
	322	{
aeb14eb0	323	struct {
df4b043f	324	struct nlmsghdr n;
aeb14eb0	325	struct ifinfomsg ifm;
df4b043f	326	char buf[256];
d17b136f PS	327	} req = {
	328	.n.nlmsg_len = NLMSG_LENGTH(sizeof(struct ifinfomsg)),
	329	.ifm.ifi_family = PF_BRIDGE,
	330	};
aeb14eb0	331
d04bc300	332	char *filter_dev = NULL;
aeb14eb0 JHS	333	char *br = NULL;
	334	int msg_size = sizeof(struct ifinfomsg);
	335
d04bc300	336	while (argc > 0) {
aeb14eb0	337	if ((strcmp(argv, "brport") == 0) \|\| strcmp(argv, "dev") == 0) {
d04bc300	338	NEXT_ARG();
d04bc300	339	filter_dev = *argv;
aeb14eb0 JHS	340	} else if (strcmp(*argv, "br") == 0) {
	341	NEXT_ARG();
	342	br = *argv;
ae6eb907 NA	343	} else if (strcmp(*argv, "vlan") == 0) {
	344	NEXT_ARG();
	345	if (filter_vlan)
	346	duparg("vlan", *argv);
	347	filter_vlan = atoi(*argv);
7f10090b NA	348	} else if (strcmp(*argv, "state") == 0) {
	349	unsigned int state;
	350
	351	NEXT_ARG();
	352	if (state_a2n(&state, *argv))
	353	invarg("invalid state", *argv);
	354	filter_state \|= state;
aeb14eb0 JHS	355	} else {
	356	if (matches(*argv, "help") == 0)
	357	usage();
d04bc300 SH	358	}
	359	argc--; argv++;
	360	}
	361
aeb14eb0 JHS	362	if (br) {
aeb14eb0 JHS	363	int br_ifindex = ll_name_to_index(br);
df4b043f	364
aeb14eb0 JHS	365	if (br_ifindex == 0) {
	366	fprintf(stderr, "Cannot find bridge device \"%s\"\n", br);
	367	return -1;
	368	}
	369	addattr32(&req.n, sizeof(req), IFLA_MASTER, br_ifindex);
	370	msg_size += RTA_LENGTH(4);
	371	}
	372
	373	/we'll keep around filter_dev for older kernels /
d04bc300	374	if (filter_dev) {
7a14358b	375	filter_index = ll_name_to_index(filter_dev);
0849e60a SH	376	if (filter_index == 0) {
	377	fprintf(stderr, "Cannot find device \"%s\"\n",
	378	filter_dev);
d04bc300 SH	379	return -1;
d04bc300 SH	380	}
aeb14eb0	381	req.ifm.ifi_index = filter_index;
d04bc300 SH	382	}
d04bc300 SH	383
aeb14eb0	384	if (rtnl_dump_request(&rth, RTM_GETNEIGH, &req.ifm, msg_size) < 0) {
d04bc300 SH	385	perror("Cannot send dump request");
	386	exit(1);
	387	}
d04bc300	388
01842eb5	389	if (json) {
b239c56e AK	390	jw_global = jsonw_new(stdout);
	391	if (!jw_global) {
	392	fprintf(stderr, "Error allocation json object\n");
	393	exit(1);
	394	}
01842eb5 SH	395	if (pretty)
	396	jsonw_pretty(jw_global, 1);
	397
b239c56e AK	398	jsonw_start_array(jw_global);
b239c56e AK	399	}
01842eb5	400
0849e60a	401	if (rtnl_dump_filter(&rth, print_fdb, stdout) < 0) {
d04bc300 SH	402	fprintf(stderr, "Dump terminated\n");
	403	exit(1);
	404	}
b239c56e AK	405	if (jw_global) {
	406	jsonw_end_array(jw_global);
	407	jsonw_destroy(&jw_global);
	408	}
d04bc300 SH	409
	410	return 0;
	411	}
	412
	413	static int fdb_modify(int cmd, int flags, int argc, char **argv)
	414	{
	415	struct {
df4b043f SH	416	struct nlmsghdr n;
	417	struct ndmsg ndm;
	418	char buf[256];
d17b136f PS	419	} req = {
	420	.n.nlmsg_len = NLMSG_LENGTH(sizeof(struct ndmsg)),
	421	.n.nlmsg_flags = NLM_F_REQUEST \| flags,
	422	.n.nlmsg_type = cmd,
	423	.ndm.ndm_family = PF_BRIDGE,
	424	.ndm.ndm_state = NUD_NOARP,
	425	};
d04bc300 SH	426	char *addr = NULL;
	427	char *d = NULL;
	428	char abuf[ETH_ALEN];
0849e60a SH	429	int dst_ok = 0;
0849e60a SH	430	inet_prefix dst;
5f409678 DS	431	unsigned long port = 0;
	432	unsigned long vni = ~0;
	433	unsigned int via = 0;
	434	char *endptr;
fd08839c	435	short vid = -1;
d04bc300	436
d04bc300 SH	437	while (argc > 0) {
	438	if (strcmp(*argv, "dev") == 0) {
	439	NEXT_ARG();
	440	d = *argv;
0849e60a SH	441	} else if (strcmp(*argv, "dst") == 0) {
	442	NEXT_ARG();
	443	if (dst_ok)
	444	duparg2("dst", *argv);
	445	get_addr(&dst, *argv, preferred_family);
	446	dst_ok = 1;
5f409678 DS	447	} else if (strcmp(*argv, "port") == 0) {
	448
	449	NEXT_ARG();
	450	port = strtoul(*argv, &endptr, 0);
	451	if (endptr && *endptr) {
	452	struct servent *pse;
	453
	454	pse = getservbyname(*argv, "udp");
	455	if (!pse)
	456	invarg("invalid port\n", *argv);
	457	port = ntohs(pse->s_port);
	458	} else if (port > 0xffff)
	459	invarg("invalid port\n", *argv);
	460	} else if (strcmp(*argv, "vni") == 0) {
	461	NEXT_ARG();
	462	vni = strtoul(*argv, &endptr, 0);
	463	if ((endptr && *endptr) \|\|
	464	(vni >> 24) \|\| vni == ULONG_MAX)
	465	invarg("invalid VNI\n", *argv);
	466	} else if (strcmp(*argv, "via") == 0) {
	467	NEXT_ARG();
7a14358b	468	via = ll_name_to_index(*argv);
5f409678 DS	469	if (via == 0)
5f409678 DS	470	invarg("invalid device\n", *argv);
dc6a6a25 JF	471	} else if (strcmp(*argv, "self") == 0) {
dc6a6a25 JF	472	req.ndm.ndm_flags \|= NTF_SELF;
0849e60a	473	} else if (matches(*argv, "master") == 0) {
dc6a6a25	474	req.ndm.ndm_flags \|= NTF_MASTER;
5b8a1d4a DS	475	} else if (matches(*argv, "router") == 0) {
5b8a1d4a DS	476	req.ndm.ndm_flags \|= NTF_ROUTER;
e9e9365b	477	} else if (matches(*argv, "local") == 0 \|\|
0849e60a SH	478	matches(*argv, "permanent") == 0) {
0849e60a SH	479	req.ndm.ndm_state \|= NUD_PERMANENT;
a1987cd1 RP	480	} else if (matches(*argv, "temp") == 0 \|\|
a1987cd1 RP	481	matches(*argv, "static") == 0) {
0849e60a	482	req.ndm.ndm_state \|= NUD_REACHABLE;
c6d0cfb5 RP	483	} else if (matches(*argv, "dynamic") == 0) {
	484	req.ndm.ndm_state \|= NUD_REACHABLE;
	485	req.ndm.ndm_state &= ~NUD_NOARP;
fd08839c VY	486	} else if (matches(*argv, "vlan") == 0) {
	487	if (vid >= 0)
	488	duparg2("vlan", *argv);
	489	NEXT_ARG();
	490	vid = atoi(*argv);
cd8df30b RP	491	} else if (matches(*argv, "use") == 0) {
cd8df30b RP	492	req.ndm.ndm_flags \|= NTF_USE;
d04bc300	493	} else {
bcddcddd	494	if (strcmp(*argv, "to") == 0)
d04bc300	495	NEXT_ARG();
bcddcddd	496
0849e60a SH	497	if (matches(*argv, "help") == 0)
0849e60a SH	498	usage();
d04bc300 SH	499	if (addr)
	500	duparg2("to", *argv);
	501	addr = *argv;
	502	}
	503	argc--; argv++;
	504	}
	505
	506	if (d == NULL \|\| addr == NULL) {
	507	fprintf(stderr, "Device and address are required arguments.\n");
42ecedd4	508	return -1;
d04bc300 SH	509	}
d04bc300 SH	510
0849e60a SH	511	/* Assume self */
	512	if (!(req.ndm.ndm_flags&(NTF_SELF\|NTF_MASTER)))
	513	req.ndm.ndm_flags \|= NTF_SELF;
	514
	515	/* Assume permanent */
	516	if (!(req.ndm.ndm_state&(NUD_PERMANENT\|NUD_REACHABLE)))
	517	req.ndm.ndm_state \|= NUD_PERMANENT;
	518
	519	if (sscanf(addr, "%hhx:%hhx:%hhx:%hhx:%hhx:%hhx",
d04bc300 SH	520	abuf, abuf+1, abuf+2,
	521	abuf+3, abuf+4, abuf+5) != 6) {
	522	fprintf(stderr, "Invalid mac address %s\n", addr);
42ecedd4	523	return -1;
d04bc300 SH	524	}
	525
	526	addattr_l(&req.n, sizeof(req), NDA_LLADDR, abuf, ETH_ALEN);
0849e60a SH	527	if (dst_ok)
0849e60a SH	528	addattr_l(&req.n, sizeof(req), NDA_DST, &dst.data, dst.bytelen);
d04bc300	529
fd08839c	530	if (vid >= 0)
8ae66094	531	addattr16(&req.n, sizeof(req), NDA_VLAN, vid);
fd08839c	532
5f409678 DS	533	if (port) {
	534	unsigned short dport;
	535
	536	dport = htons((unsigned short)port);
	537	addattr16(&req.n, sizeof(req), NDA_PORT, dport);
	538	}
	539	if (vni != ~0)
	540	addattr32(&req.n, sizeof(req), NDA_VNI, vni);
	541	if (via)
	542	addattr32(&req.n, sizeof(req), NDA_IFINDEX, via);
	543
d04bc300 SH	544	req.ndm.ndm_ifindex = ll_name_to_index(d);
	545	if (req.ndm.ndm_ifindex == 0) {
	546	fprintf(stderr, "Cannot find device \"%s\"\n", d);
	547	return -1;
	548	}
	549
86bf43c7	550	if (rtnl_talk(&rth, &req.n, NULL) < 0)
42ecedd4	551	return -1;
d04bc300 SH	552
	553	return 0;
	554	}
	555
	556	int do_fdb(int argc, char **argv)
	557	{
	558	ll_init_map(&rth);
	559
	560	if (argc > 0) {
	561	if (matches(*argv, "add") == 0)
	562	return fdb_modify(RTM_NEWNEIGH, NLM_F_CREATE\|NLM_F_EXCL, argc-1, argv+1);
5f409678 DS	563	if (matches(*argv, "append") == 0)
5f409678 DS	564	return fdb_modify(RTM_NEWNEIGH, NLM_F_CREATE\|NLM_F_APPEND, argc-1, argv+1);
5464049b TR	565	if (matches(*argv, "replace") == 0)
5464049b TR	566	return fdb_modify(RTM_NEWNEIGH, NLM_F_CREATE\|NLM_F_REPLACE, argc-1, argv+1);
d04bc300 SH	567	if (matches(*argv, "delete") == 0)
	568	return fdb_modify(RTM_DELNEIGH, 0, argc-1, argv+1);
	569	if (matches(*argv, "show") == 0 \|\|
	570	matches(*argv, "lst") == 0 \|\|
	571	matches(*argv, "list") == 0)
	572	return fdb_show(argc-1, argv+1);
	573	if (matches(*argv, "help") == 0)
	574	usage();
	575	} else
	576	return fdb_show(0, NULL);
	577
083b46bb	578	fprintf(stderr, "Command \"%s\" is unknown, try \"bridge fdb help\".\n", *argv);
d04bc300 SH	579	exit(-1);
d04bc300 SH	580	}