[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 <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 ] [ dst IPADDR] [ vlan VID ]\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 (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;
	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, "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); 

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