[mirror_iproute2.git] / bridge / fdb.c

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

int filter_index;

static void usage(void)
{
	fprintf(stderr, "Usage: bridge fdb { add | del } ADDR dev DEV {self|master} [ temp ]\n"
		        "              [ dst IPADDR] [ vlan VID ]\n"
		        "              [ port PORT] [ vni VNI ] [via DEV]\n");
	fprintf(stderr, "       bridge fdb {show} [ dev DEV ]\n");
	exit(-1);
}

static const char *state_n2a(unsigned 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;
}

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];

	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;

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

	if (n->nlmsg_type == RTM_DELNEIGH)
		fprintf(fp, "Deleted ");

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

	if (!filter_index && r->ndm_ifindex)
		fprintf(fp, "dev %s ", ll_index_to_name(r->ndm_ifindex));

	if (tb[NDA_DST]) {
		SPRINT_BUF(abuf);
		fprintf(fp, "dst %s ",
			format_host(AF_INET,
				    RTA_PAYLOAD(tb[NDA_DST]),
				    RTA_DATA(tb[NDA_DST]),
				    abuf, sizeof(abuf)));
	}

	if (tb[NDA_VLAN]) {
		__u16 vid = rta_getattr_u16(tb[NDA_VLAN]);
		fprintf(fp, "vlan %hu ", vid);
	}

	if (tb[NDA_PORT])
		fprintf(fp, "port %d ", ntohs(rta_getattr_u16(tb[NDA_PORT])));
	if (tb[NDA_VNI])
		fprintf(fp, "vni %d ", rta_getattr_u32(tb[NDA_VNI]));
	if (tb[NDA_IFINDEX]) {
		unsigned int ifindex = rta_getattr_u32(tb[NDA_IFINDEX]);

		if (ifindex) {
			char ifname[IF_NAMESIZE];

			if (if_indextoname(ifindex, ifname))
				fprintf(fp, "via %s ", ifname);
			else
				fprintf(fp, "via ifindex %u ", ifindex);
		}
	}

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

		fprintf(fp, " used %d/%d", ci->ndm_used/hz,
		       ci->ndm_updated/hz);
	}
	if (r->ndm_flags & NTF_SELF)
		fprintf(fp, "self ");
	if (r->ndm_flags & NTF_MASTER)
		fprintf(fp, "master ");

	fprintf(fp, "%s\n", state_n2a(r->ndm_state));
	return 0;
}

static int fdb_show(int argc, char **argv)
{
	char *filter_dev = NULL;

	while (argc > 0) {
		if (strcmp(*argv, "dev") == 0) {
			NEXT_ARG();
			if (filter_dev)
				duparg("dev", *argv);
			filter_dev = *argv;
		}
		argc--; argv++;
	}

	if (filter_dev) {
		filter_index = if_nametoindex(filter_dev);
		if (filter_index == 0) {
			fprintf(stderr, "Cannot find device \"%s\"\n",
				filter_dev);
			return -1;
		}
	}

	if (rtnl_wilddump_request(&rth, PF_BRIDGE, RTM_GETNEIGH) < 0) {
		perror("Cannot send dump request");
		exit(1);
	}

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

	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;
	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;

	memset(&req, 0, sizeof(req));

	req.n.nlmsg_len = NLMSG_LENGTH(sizeof(struct ndmsg));
	req.n.nlmsg_flags = NLM_F_REQUEST|flags;
	req.n.nlmsg_type = cmd;
	req.ndm.ndm_family = PF_BRIDGE;
	req.ndm.ndm_state = NUD_NOARP;

	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 = if_nametoindex(*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, "local") == 0||
			   matches(*argv, "permanent") == 0) {
			req.ndm.ndm_state |= NUD_PERMANENT;
		} else if (matches(*argv, "temp") == 0) {
			req.ndm.ndm_state |= NUD_REACHABLE;
		} else if (matches(*argv, "vlan") == 0) {
			if (vid >= 0)
				duparg2("vlan", *argv);
			NEXT_ARG();
			vid = atoi(*argv);
		} 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");
		exit(-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);
		exit(-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, 0, 0, NULL) < 0)
		exit(2);

	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, "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
d04bc300 SH	1	/*
	2	* Get/set/delete fdb table with netlink
	3	*
0849e60a SH	4	* TODO: merge/replace this with ip neighbour
0849e60a SH	5	*
d04bc300 SH	6	* Authors: Stephen Hemminger <shemminger@vyatta.com>
	7	*/
	8
	9	#include <stdio.h>
	10	#include <stdlib.h>
	11	#include <unistd.h>
5f409678	12	#include <netdb.h>
d04bc300 SH	13	#include <time.h>
	14	#include <fcntl.h>
	15	#include <sys/socket.h>
	16	#include <sys/time.h>
	17	#include <net/if.h>
	18	#include <netinet/in.h>
	19	#include <linux/if_bridge.h>
	20	#include <linux/if_ether.h>
	21	#include <linux/neighbour.h>
	22	#include <string.h>
	23
	24	#include "libnetlink.h"
	25	#include "br_common.h"
0849e60a	26	#include "rt_names.h"
d04bc300 SH	27	#include "utils.h"
	28
	29	int filter_index;
	30
	31	static void usage(void)
	32	{
8ae66094	33	fprintf(stderr, "Usage: bridge fdb { add \| del } ADDR dev DEV {self\|master} [ temp ]\n"
5f409678 DS	34	" [ dst IPADDR] [ vlan VID ]\n"
5f409678 DS	35	" [ port PORT] [ vni VNI ] [via DEV]\n");
90698170	36	fprintf(stderr, " bridge fdb {show} [ dev DEV ]\n");
d04bc300 SH	37	exit(-1);
	38	}
	39
	40	static const char *state_n2a(unsigned s)
	41	{
	42	static char buf[32];
	43
0849e60a SH	44	if (s & NUD_PERMANENT)
0849e60a SH	45	return "permanent";
d04bc300 SH	46
	47	if (s & NUD_NOARP)
	48	return "static";
	49
	50	if (s & NUD_STALE)
	51	return "stale";
0849e60a	52
d04bc300 SH	53	if (s & NUD_REACHABLE)
	54	return "";
	55
	56	sprintf(buf, "state=%#x", s);
	57	return buf;
	58	}
	59
d04bc300 SH	60	int print_fdb(const struct sockaddr_nl who, struct nlmsghdr n, void *arg)
d04bc300 SH	61	{
0849e60a	62	FILE *fp = arg;
d04bc300 SH	63	struct ndmsg *r = NLMSG_DATA(n);
	64	int len = n->nlmsg_len;
	65	struct rtattr * tb[NDA_MAX+1];
0849e60a SH	66
	67	if (n->nlmsg_type != RTM_NEWNEIGH && n->nlmsg_type != RTM_DELNEIGH) {
	68	fprintf(stderr, "Not RTM_NEWNEIGH: %08x %08x %08x\n",
	69	n->nlmsg_len, n->nlmsg_type, n->nlmsg_flags);
	70
	71	return 0;
	72	}
d04bc300 SH	73
	74	len -= NLMSG_LENGTH(sizeof(*r));
	75	if (len < 0) {
	76	fprintf(stderr, "BUG: wrong nlmsg len %d\n", len);
	77	return -1;
	78	}
	79
	80	if (r->ndm_family != AF_BRIDGE)
	81	return 0;
	82
	83	if (filter_index && filter_index != r->ndm_ifindex)
	84	return 0;
	85
	86	parse_rtattr(tb, NDA_MAX, NDA_RTA(r),
	87	n->nlmsg_len - NLMSG_LENGTH(sizeof(*r)));
	88
	89	if (n->nlmsg_type == RTM_DELNEIGH)
0849e60a SH	90	fprintf(fp, "Deleted ");
	91
	92	if (tb[NDA_LLADDR]) {
	93	SPRINT_BUF(b1);
	94	fprintf(fp, "%s ",
	95	ll_addr_n2a(RTA_DATA(tb[NDA_LLADDR]),
	96	RTA_PAYLOAD(tb[NDA_LLADDR]),
	97	ll_index_to_type(r->ndm_ifindex),
	98	b1, sizeof(b1)));
d04bc300	99	}
38df7ac9	100
0849e60a SH	101	if (!filter_index && r->ndm_ifindex)
	102	fprintf(fp, "dev %s ", ll_index_to_name(r->ndm_ifindex));
	103
	104	if (tb[NDA_DST]) {
	105	SPRINT_BUF(abuf);
	106	fprintf(fp, "dst %s ",
	107	format_host(AF_INET,
	108	RTA_PAYLOAD(tb[NDA_DST]),
	109	RTA_DATA(tb[NDA_DST]),
	110	abuf, sizeof(abuf)));
	111	}
38df7ac9	112
fd08839c VY	113	if (tb[NDA_VLAN]) {
	114	__u16 vid = rta_getattr_u16(tb[NDA_VLAN]);
	115	fprintf(fp, "vlan %hu ", vid);
	116	}
	117
5f409678 DS	118	if (tb[NDA_PORT])
	119	fprintf(fp, "port %d ", ntohs(rta_getattr_u16(tb[NDA_PORT])));
	120	if (tb[NDA_VNI])
	121	fprintf(fp, "vni %d ", rta_getattr_u32(tb[NDA_VNI]));
	122	if (tb[NDA_IFINDEX]) {
	123	unsigned int ifindex = rta_getattr_u32(tb[NDA_IFINDEX]);
	124
	125	if (ifindex) {
	126	char ifname[IF_NAMESIZE];
	127
	128	if (if_indextoname(ifindex, ifname))
	129	fprintf(fp, "via %s ", ifname);
	130	else
	131	fprintf(fp, "via ifindex %u ", ifindex);
	132	}
	133	}
	134
d04bc300 SH	135	if (show_stats && tb[NDA_CACHEINFO]) {
d04bc300 SH	136	struct nda_cacheinfo *ci = RTA_DATA(tb[NDA_CACHEINFO]);
0849e60a	137	int hz = get_user_hz();
d04bc300	138
0849e60a SH	139	fprintf(fp, " used %d/%d", ci->ndm_used/hz,
0849e60a SH	140	ci->ndm_updated/hz);
d04bc300	141	}
0849e60a SH	142	if (r->ndm_flags & NTF_SELF)
	143	fprintf(fp, "self ");
	144	if (r->ndm_flags & NTF_MASTER)
	145	fprintf(fp, "master ");
d04bc300	146
0849e60a	147	fprintf(fp, "%s\n", state_n2a(r->ndm_state));
d04bc300 SH	148	return 0;
	149	}
	150
	151	static int fdb_show(int argc, char **argv)
	152	{
	153	char *filter_dev = NULL;
0849e60a	154
d04bc300 SH	155	while (argc > 0) {
	156	if (strcmp(*argv, "dev") == 0) {
	157	NEXT_ARG();
	158	if (filter_dev)
	159	duparg("dev", *argv);
	160	filter_dev = *argv;
	161	}
	162	argc--; argv++;
	163	}
	164
	165	if (filter_dev) {
0849e60a SH	166	filter_index = if_nametoindex(filter_dev);
	167	if (filter_index == 0) {
	168	fprintf(stderr, "Cannot find device \"%s\"\n",
	169	filter_dev);
d04bc300 SH	170	return -1;
	171	}
	172	}
	173
	174	if (rtnl_wilddump_request(&rth, PF_BRIDGE, RTM_GETNEIGH) < 0) {
	175	perror("Cannot send dump request");
	176	exit(1);
	177	}
d04bc300	178
0849e60a	179	if (rtnl_dump_filter(&rth, print_fdb, stdout) < 0) {
d04bc300 SH	180	fprintf(stderr, "Dump terminated\n");
	181	exit(1);
	182	}
	183
	184	return 0;
	185	}
	186
	187	static int fdb_modify(int cmd, int flags, int argc, char **argv)
	188	{
	189	struct {
	190	struct nlmsghdr n;
	191	struct ndmsg ndm;
	192	char buf[256];
	193	} req;
	194	char *addr = NULL;
	195	char *d = NULL;
	196	char abuf[ETH_ALEN];
0849e60a SH	197	int dst_ok = 0;
0849e60a SH	198	inet_prefix dst;
5f409678 DS	199	unsigned long port = 0;
	200	unsigned long vni = ~0;
	201	unsigned int via = 0;
	202	char *endptr;
fd08839c	203	short vid = -1;
d04bc300 SH	204
	205	memset(&req, 0, sizeof(req));
	206
	207	req.n.nlmsg_len = NLMSG_LENGTH(sizeof(struct ndmsg));
	208	req.n.nlmsg_flags = NLM_F_REQUEST\|flags;
	209	req.n.nlmsg_type = cmd;
	210	req.ndm.ndm_family = PF_BRIDGE;
	211	req.ndm.ndm_state = NUD_NOARP;
	212
	213	while (argc > 0) {
	214	if (strcmp(*argv, "dev") == 0) {
	215	NEXT_ARG();
	216	d = *argv;
0849e60a SH	217	} else if (strcmp(*argv, "dst") == 0) {
	218	NEXT_ARG();
	219	if (dst_ok)
	220	duparg2("dst", *argv);
	221	get_addr(&dst, *argv, preferred_family);
	222	dst_ok = 1;
5f409678 DS	223	} else if (strcmp(*argv, "port") == 0) {
	224
	225	NEXT_ARG();
	226	port = strtoul(*argv, &endptr, 0);
	227	if (endptr && *endptr) {
	228	struct servent *pse;
	229
	230	pse = getservbyname(*argv, "udp");
	231	if (!pse)
	232	invarg("invalid port\n", *argv);
	233	port = ntohs(pse->s_port);
	234	} else if (port > 0xffff)
	235	invarg("invalid port\n", *argv);
	236	} else if (strcmp(*argv, "vni") == 0) {
	237	NEXT_ARG();
	238	vni = strtoul(*argv, &endptr, 0);
	239	if ((endptr && *endptr) \|\|
	240	(vni >> 24) \|\| vni == ULONG_MAX)
	241	invarg("invalid VNI\n", *argv);
	242	} else if (strcmp(*argv, "via") == 0) {
	243	NEXT_ARG();
	244	via = if_nametoindex(*argv);
	245	if (via == 0)
	246	invarg("invalid device\n", *argv);
dc6a6a25 JF	247	} else if (strcmp(*argv, "self") == 0) {
dc6a6a25 JF	248	req.ndm.ndm_flags \|= NTF_SELF;
0849e60a	249	} else if (matches(*argv, "master") == 0) {
dc6a6a25	250	req.ndm.ndm_flags \|= NTF_MASTER;
38df7ac9	251	} else if (matches(*argv, "local") == 0\|\|
0849e60a SH	252	matches(*argv, "permanent") == 0) {
	253	req.ndm.ndm_state \|= NUD_PERMANENT;
	254	} else if (matches(*argv, "temp") == 0) {
	255	req.ndm.ndm_state \|= NUD_REACHABLE;
fd08839c VY	256	} else if (matches(*argv, "vlan") == 0) {
	257	if (vid >= 0)
	258	duparg2("vlan", *argv);
	259	NEXT_ARG();
	260	vid = atoi(*argv);
d04bc300 SH	261	} else {
	262	if (strcmp(*argv, "to") == 0) {
	263	NEXT_ARG();
	264	}
0849e60a SH	265	if (matches(*argv, "help") == 0)
0849e60a SH	266	usage();
d04bc300 SH	267	if (addr)
	268	duparg2("to", *argv);
	269	addr = *argv;
	270	}
	271	argc--; argv++;
	272	}
	273
	274	if (d == NULL \|\| addr == NULL) {
	275	fprintf(stderr, "Device and address are required arguments.\n");
	276	exit(-1);
	277	}
	278
0849e60a SH	279	/* Assume self */
	280	if (!(req.ndm.ndm_flags&(NTF_SELF\|NTF_MASTER)))
	281	req.ndm.ndm_flags \|= NTF_SELF;
	282
	283	/* Assume permanent */
	284	if (!(req.ndm.ndm_state&(NUD_PERMANENT\|NUD_REACHABLE)))
	285	req.ndm.ndm_state \|= NUD_PERMANENT;
	286
	287	if (sscanf(addr, "%hhx:%hhx:%hhx:%hhx:%hhx:%hhx",
d04bc300 SH	288	abuf, abuf+1, abuf+2,
	289	abuf+3, abuf+4, abuf+5) != 6) {
	290	fprintf(stderr, "Invalid mac address %s\n", addr);
	291	exit(-1);
	292	}
	293
	294	addattr_l(&req.n, sizeof(req), NDA_LLADDR, abuf, ETH_ALEN);
0849e60a SH	295	if (dst_ok)
0849e60a SH	296	addattr_l(&req.n, sizeof(req), NDA_DST, &dst.data, dst.bytelen);
d04bc300	297
fd08839c	298	if (vid >= 0)
8ae66094	299	addattr16(&req.n, sizeof(req), NDA_VLAN, vid);
fd08839c	300
5f409678 DS	301	if (port) {
	302	unsigned short dport;
	303
	304	dport = htons((unsigned short)port);
	305	addattr16(&req.n, sizeof(req), NDA_PORT, dport);
	306	}
	307	if (vni != ~0)
	308	addattr32(&req.n, sizeof(req), NDA_VNI, vni);
	309	if (via)
	310	addattr32(&req.n, sizeof(req), NDA_IFINDEX, via);
	311
d04bc300 SH	312	req.ndm.ndm_ifindex = ll_name_to_index(d);
	313	if (req.ndm.ndm_ifindex == 0) {
	314	fprintf(stderr, "Cannot find device \"%s\"\n", d);
	315	return -1;
	316	}
	317
	318	if (rtnl_talk(&rth, &req.n, 0, 0, NULL) < 0)
	319	exit(2);
	320
	321	return 0;
	322	}
	323
	324	int do_fdb(int argc, char **argv)
	325	{
	326	ll_init_map(&rth);
	327
	328	if (argc > 0) {
	329	if (matches(*argv, "add") == 0)
	330	return fdb_modify(RTM_NEWNEIGH, NLM_F_CREATE\|NLM_F_EXCL, argc-1, argv+1);
5f409678 DS	331	if (matches(*argv, "append") == 0)
5f409678 DS	332	return fdb_modify(RTM_NEWNEIGH, NLM_F_CREATE\|NLM_F_APPEND, argc-1, argv+1);
d04bc300 SH	333	if (matches(*argv, "delete") == 0)
	334	return fdb_modify(RTM_DELNEIGH, 0, argc-1, argv+1);
	335	if (matches(*argv, "show") == 0 \|\|
	336	matches(*argv, "lst") == 0 \|\|
	337	matches(*argv, "list") == 0)
	338	return fdb_show(argc-1, argv+1);
	339	if (matches(*argv, "help") == 0)
	340	usage();
	341	} else
	342	return fdb_show(0, NULL);
	343
083b46bb	344	fprintf(stderr, "Command \"%s\" is unknown, try \"bridge fdb help\".\n", *argv);
d04bc300 SH	345	exit(-1);
d04bc300 SH	346	}