[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 <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");
	fprintf(stderr, "       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_pretty(jw_global, 1);
		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_IFINDEX]) {
		unsigned int ifindex = rta_getattr_u32(tb[NDA_IFINDEX]);

		if (ifindex) {
			char ifname[IF_NAMESIZE];

			if (!tb[NDA_LINK_NETNSID] &&
			    if_indextoname(ifindex, ifname)) {
				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, "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, "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 = if_nametoindex(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_output) {
		jw_global = jsonw_new(stdout);
		if (!jw_global) {
			fprintf(stderr, "Error allocation json object\n");
			exit(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 = 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, "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) < 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
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>
dd9cc0ee	23	#include <limits.h>
b239c56e AK	24	#include <json_writer.h>
b239c56e AK	25	#include <stdbool.h>
d04bc300 SH	26
	27	#include "libnetlink.h"
	28	#include "br_common.h"
0849e60a	29	#include "rt_names.h"
d04bc300 SH	30	#include "utils.h"
d04bc300 SH	31
7f10090b	32	static unsigned int filter_index, filter_vlan, filter_state;
d04bc300	33
b239c56e AK	34	json_writer_t *jw_global;
b239c56e AK	35
d04bc300 SH	36	static void usage(void)
d04bc300 SH	37	{
bd5bbad4	38	fprintf(stderr, "Usage: bridge fdb { add \| append \| del \| replace } ADDR dev DEV\n"
cd8df30b	39	" [ self ] [ master ] [ use ] [ router ]\n"
c6d0cfb5	40	" [ local \| static \| dynamic ] [ dst IPADDR ] [ vlan VID ]\n"
df4b043f	41	" [ port PORT] [ vni VNI ] [ via DEV ]\n");
7f10090b	42	fprintf(stderr, " bridge fdb [ show [ br BRDEV ] [ brport DEV ] [ vlan VID ] [ state STATE ] ]\n");
d04bc300 SH	43	exit(-1);
	44	}
	45
df4b043f	46	static const char *state_n2a(unsigned int s)
d04bc300 SH	47	{
	48	static char buf[32];
	49
0849e60a SH	50	if (s & NUD_PERMANENT)
0849e60a SH	51	return "permanent";
d04bc300 SH	52
	53	if (s & NUD_NOARP)
	54	return "static";
	55
	56	if (s & NUD_STALE)
	57	return "stale";
0849e60a	58
d04bc300 SH	59	if (s & NUD_REACHABLE)
	60	return "";
	61
	62	sprintf(buf, "state=%#x", s);
	63	return buf;
	64	}
	65
7f10090b NA	66	static int state_a2n(unsigned int s, const char arg)
	67	{
	68	if (matches(arg, "permanent") == 0)
	69	*s = NUD_PERMANENT;
	70	else if (matches(arg, "static") == 0 \|\| matches(arg, "temp") == 0)
	71	*s = NUD_NOARP;
	72	else if (matches(arg, "stale") == 0)
	73	*s = NUD_STALE;
	74	else if (matches(arg, "reachable") == 0 \|\| matches(arg, "dynamic") == 0)
	75	*s = NUD_REACHABLE;
	76	else if (strcmp(arg, "all") == 0)
	77	*s = ~0;
	78	else if (get_unsigned(s, arg, 0))
	79	return -1;
	80
	81	return 0;
	82	}
	83
b239c56e AK	84	static void start_json_fdb_flags_array(bool *fdb_flags)
	85	{
	86	if (*fdb_flags)
	87	return;
	88	jsonw_name(jw_global, "flags");
	89	jsonw_start_array(jw_global);
	90	*fdb_flags = true;
	91	}
	92
d04bc300 SH	93	int print_fdb(const struct sockaddr_nl who, struct nlmsghdr n, void *arg)
d04bc300 SH	94	{
0849e60a	95	FILE *fp = arg;
d04bc300 SH	96	struct ndmsg *r = NLMSG_DATA(n);
d04bc300 SH	97	int len = n->nlmsg_len;
df4b043f	98	struct rtattr *tb[NDA_MAX+1];
ae6eb907	99	__u16 vid = 0;
b239c56e AK	100	bool fdb_flags = false;
b239c56e AK	101	const char *state_s;
0849e60a SH	102
	103	if (n->nlmsg_type != RTM_NEWNEIGH && n->nlmsg_type != RTM_DELNEIGH) {
	104	fprintf(stderr, "Not RTM_NEWNEIGH: %08x %08x %08x\n",
	105	n->nlmsg_len, n->nlmsg_type, n->nlmsg_flags);
0849e60a SH	106	return 0;
0849e60a SH	107	}
d04bc300 SH	108
	109	len -= NLMSG_LENGTH(sizeof(*r));
	110	if (len < 0) {
	111	fprintf(stderr, "BUG: wrong nlmsg len %d\n", len);
	112	return -1;
	113	}
	114
	115	if (r->ndm_family != AF_BRIDGE)
	116	return 0;
	117
	118	if (filter_index && filter_index != r->ndm_ifindex)
	119	return 0;
	120
7f10090b NA	121	if (filter_state && !(r->ndm_state & filter_state))
	122	return 0;
	123
d04bc300 SH	124	parse_rtattr(tb, NDA_MAX, NDA_RTA(r),
	125	n->nlmsg_len - NLMSG_LENGTH(sizeof(*r)));
	126
ae6eb907 NA	127	if (tb[NDA_VLAN])
	128	vid = rta_getattr_u16(tb[NDA_VLAN]);
	129
	130	if (filter_vlan && filter_vlan != vid)
	131	return 0;
	132
afd3921e	133	if (jw_global) {
	134	jsonw_pretty(jw_global, 1);
	135	jsonw_start_object(jw_global);
	136	}
	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
5f409678 DS	207	if (tb[NDA_IFINDEX]) {
	208	unsigned int ifindex = rta_getattr_u32(tb[NDA_IFINDEX]);
	209
	210	if (ifindex) {
	211	char ifname[IF_NAMESIZE];
	212
a4797670	213	if (!tb[NDA_LINK_NETNSID] &&
b239c56e AK	214	if_indextoname(ifindex, ifname)) {
	215	if (jw_global)
	216	jsonw_string_field(jw_global, "viaIf",
	217	ifname);
	218	else
	219	fprintf(fp, "via %s ", ifname);
	220	} else {
	221	if (jw_global)
	222	jsonw_uint_field(jw_global, "viaIfIndex",
	223	ifindex);
	224	else
	225	fprintf(fp, "via ifindex %u ", ifindex);
	226	}
5f409678 DS	227	}
5f409678 DS	228	}
b239c56e AK	229
	230	if (tb[NDA_LINK_NETNSID]) {
	231	if (jw_global)
	232	jsonw_uint_field(jw_global, "linkNetNsId",
	233	rta_getattr_u32(tb[NDA_LINK_NETNSID]));
	234	else
	235	fprintf(fp, "link-netnsid %d ",
	236	rta_getattr_u32(tb[NDA_LINK_NETNSID]));
	237	}
5f409678	238
d04bc300 SH	239	if (show_stats && tb[NDA_CACHEINFO]) {
d04bc300 SH	240	struct nda_cacheinfo *ci = RTA_DATA(tb[NDA_CACHEINFO]);
0849e60a	241	int hz = get_user_hz();
d04bc300	242
b239c56e AK	243	if (jw_global) {
	244	jsonw_uint_field(jw_global, "used",
	245	ci->ndm_used/hz);
	246	jsonw_uint_field(jw_global, "updated",
	247	ci->ndm_updated/hz);
	248	} else {
	249	fprintf(fp, "used %d/%d ", ci->ndm_used/hz,
	250	ci->ndm_updated/hz);
	251	}
	252	}
	253
	254	if (jw_global) {
	255	if (r->ndm_flags & NTF_SELF) {
	256	start_json_fdb_flags_array(&fdb_flags);
	257	jsonw_string(jw_global, "self");
	258	}
	259	if (r->ndm_flags & NTF_ROUTER) {
	260	start_json_fdb_flags_array(&fdb_flags);
	261	jsonw_string(jw_global, "router");
	262	}
	263	if (r->ndm_flags & NTF_EXT_LEARNED) {
	264	start_json_fdb_flags_array(&fdb_flags);
	265	jsonw_string(jw_global, "offload");
	266	}
	267	if (r->ndm_flags & NTF_MASTER)
	268	jsonw_string(jw_global, "master");
	269	if (fdb_flags)
	270	jsonw_end_array(jw_global);
	271
	272	if (tb[NDA_MASTER])
	273	jsonw_string_field(jw_global,
	274	"master",
	275	ll_index_to_name(rta_getattr_u32(tb[NDA_MASTER])));
	276
	277	} else {
	278	if (r->ndm_flags & NTF_SELF)
	279	fprintf(fp, "self ");
	280	if (r->ndm_flags & NTF_ROUTER)
	281	fprintf(fp, "router ");
	282	if (r->ndm_flags & NTF_EXT_LEARNED)
	283	fprintf(fp, "offload ");
	284	if (tb[NDA_MASTER]) {
	285	fprintf(fp, "master %s ",
	286	ll_index_to_name(rta_getattr_u32(tb[NDA_MASTER])));
	287	} else if (r->ndm_flags & NTF_MASTER) {
	288	fprintf(fp, "master ");
	289	}
	290	}
	291
	292	state_s = state_n2a(r->ndm_state);
	293	if (jw_global) {
	294	if (state_s[0])
	295	jsonw_string_field(jw_global, "state", state_s);
	296
	297	jsonw_end_object(jw_global);
	298	} else {
	299	fprintf(fp, "%s\n", state_s);
	300
	301	fflush(fp);
d04bc300	302	}
4d45bf3b	303
d04bc300 SH	304	return 0;
	305	}
	306
	307	static int fdb_show(int argc, char **argv)
	308	{
aeb14eb0	309	struct {
df4b043f	310	struct nlmsghdr n;
aeb14eb0	311	struct ifinfomsg ifm;
df4b043f	312	char buf[256];
d17b136f PS	313	} req = {
	314	.n.nlmsg_len = NLMSG_LENGTH(sizeof(struct ifinfomsg)),
	315	.ifm.ifi_family = PF_BRIDGE,
	316	};
aeb14eb0	317
d04bc300	318	char *filter_dev = NULL;
aeb14eb0 JHS	319	char *br = NULL;
	320	int msg_size = sizeof(struct ifinfomsg);
	321
d04bc300	322	while (argc > 0) {
aeb14eb0	323	if ((strcmp(argv, "brport") == 0) \|\| strcmp(argv, "dev") == 0) {
d04bc300	324	NEXT_ARG();
d04bc300	325	filter_dev = *argv;
aeb14eb0 JHS	326	} else if (strcmp(*argv, "br") == 0) {
	327	NEXT_ARG();
	328	br = *argv;
ae6eb907 NA	329	} else if (strcmp(*argv, "vlan") == 0) {
	330	NEXT_ARG();
	331	if (filter_vlan)
	332	duparg("vlan", *argv);
	333	filter_vlan = atoi(*argv);
7f10090b NA	334	} else if (strcmp(*argv, "state") == 0) {
	335	unsigned int state;
	336
	337	NEXT_ARG();
	338	if (state_a2n(&state, *argv))
	339	invarg("invalid state", *argv);
	340	filter_state \|= state;
aeb14eb0 JHS	341	} else {
	342	if (matches(*argv, "help") == 0)
	343	usage();
d04bc300 SH	344	}
	345	argc--; argv++;
	346	}
	347
aeb14eb0 JHS	348	if (br) {
aeb14eb0 JHS	349	int br_ifindex = ll_name_to_index(br);
df4b043f	350
aeb14eb0 JHS	351	if (br_ifindex == 0) {
	352	fprintf(stderr, "Cannot find bridge device \"%s\"\n", br);
	353	return -1;
	354	}
	355	addattr32(&req.n, sizeof(req), IFLA_MASTER, br_ifindex);
	356	msg_size += RTA_LENGTH(4);
	357	}
	358
	359	/we'll keep around filter_dev for older kernels /
d04bc300	360	if (filter_dev) {
0849e60a SH	361	filter_index = if_nametoindex(filter_dev);
	362	if (filter_index == 0) {
	363	fprintf(stderr, "Cannot find device \"%s\"\n",
	364	filter_dev);
d04bc300 SH	365	return -1;
d04bc300 SH	366	}
aeb14eb0	367	req.ifm.ifi_index = filter_index;
d04bc300 SH	368	}
d04bc300 SH	369
aeb14eb0	370	if (rtnl_dump_request(&rth, RTM_GETNEIGH, &req.ifm, msg_size) < 0) {
d04bc300 SH	371	perror("Cannot send dump request");
	372	exit(1);
	373	}
d04bc300	374
b239c56e AK	375	if (json_output) {
	376	jw_global = jsonw_new(stdout);
	377	if (!jw_global) {
	378	fprintf(stderr, "Error allocation json object\n");
	379	exit(1);
	380	}
	381	jsonw_start_array(jw_global);
	382	}
0849e60a	383	if (rtnl_dump_filter(&rth, print_fdb, stdout) < 0) {
d04bc300 SH	384	fprintf(stderr, "Dump terminated\n");
	385	exit(1);
	386	}
b239c56e AK	387	if (jw_global) {
	388	jsonw_end_array(jw_global);
	389	jsonw_destroy(&jw_global);
	390	}
d04bc300 SH	391
	392	return 0;
	393	}
	394
	395	static int fdb_modify(int cmd, int flags, int argc, char **argv)
	396	{
	397	struct {
df4b043f SH	398	struct nlmsghdr n;
	399	struct ndmsg ndm;
	400	char buf[256];
d17b136f PS	401	} req = {
	402	.n.nlmsg_len = NLMSG_LENGTH(sizeof(struct ndmsg)),
	403	.n.nlmsg_flags = NLM_F_REQUEST \| flags,
	404	.n.nlmsg_type = cmd,
	405	.ndm.ndm_family = PF_BRIDGE,
	406	.ndm.ndm_state = NUD_NOARP,
	407	};
d04bc300 SH	408	char *addr = NULL;
	409	char *d = NULL;
	410	char abuf[ETH_ALEN];
0849e60a SH	411	int dst_ok = 0;
0849e60a SH	412	inet_prefix dst;
5f409678 DS	413	unsigned long port = 0;
	414	unsigned long vni = ~0;
	415	unsigned int via = 0;
	416	char *endptr;
fd08839c	417	short vid = -1;
d04bc300	418
d04bc300 SH	419	while (argc > 0) {
	420	if (strcmp(*argv, "dev") == 0) {
	421	NEXT_ARG();
	422	d = *argv;
0849e60a SH	423	} else if (strcmp(*argv, "dst") == 0) {
	424	NEXT_ARG();
	425	if (dst_ok)
	426	duparg2("dst", *argv);
	427	get_addr(&dst, *argv, preferred_family);
	428	dst_ok = 1;
5f409678 DS	429	} else if (strcmp(*argv, "port") == 0) {
	430
	431	NEXT_ARG();
	432	port = strtoul(*argv, &endptr, 0);
	433	if (endptr && *endptr) {
	434	struct servent *pse;
	435
	436	pse = getservbyname(*argv, "udp");
	437	if (!pse)
	438	invarg("invalid port\n", *argv);
	439	port = ntohs(pse->s_port);
	440	} else if (port > 0xffff)
	441	invarg("invalid port\n", *argv);
	442	} else if (strcmp(*argv, "vni") == 0) {
	443	NEXT_ARG();
	444	vni = strtoul(*argv, &endptr, 0);
	445	if ((endptr && *endptr) \|\|
	446	(vni >> 24) \|\| vni == ULONG_MAX)
	447	invarg("invalid VNI\n", *argv);
	448	} else if (strcmp(*argv, "via") == 0) {
	449	NEXT_ARG();
	450	via = if_nametoindex(*argv);
	451	if (via == 0)
	452	invarg("invalid device\n", *argv);
dc6a6a25 JF	453	} else if (strcmp(*argv, "self") == 0) {
dc6a6a25 JF	454	req.ndm.ndm_flags \|= NTF_SELF;
0849e60a	455	} else if (matches(*argv, "master") == 0) {
dc6a6a25	456	req.ndm.ndm_flags \|= NTF_MASTER;
5b8a1d4a DS	457	} else if (matches(*argv, "router") == 0) {
5b8a1d4a DS	458	req.ndm.ndm_flags \|= NTF_ROUTER;
e9e9365b	459	} else if (matches(*argv, "local") == 0 \|\|
0849e60a SH	460	matches(*argv, "permanent") == 0) {
0849e60a SH	461	req.ndm.ndm_state \|= NUD_PERMANENT;
a1987cd1 RP	462	} else if (matches(*argv, "temp") == 0 \|\|
a1987cd1 RP	463	matches(*argv, "static") == 0) {
0849e60a	464	req.ndm.ndm_state \|= NUD_REACHABLE;
c6d0cfb5 RP	465	} else if (matches(*argv, "dynamic") == 0) {
	466	req.ndm.ndm_state \|= NUD_REACHABLE;
	467	req.ndm.ndm_state &= ~NUD_NOARP;
fd08839c VY	468	} else if (matches(*argv, "vlan") == 0) {
	469	if (vid >= 0)
	470	duparg2("vlan", *argv);
	471	NEXT_ARG();
	472	vid = atoi(*argv);
cd8df30b RP	473	} else if (matches(*argv, "use") == 0) {
cd8df30b RP	474	req.ndm.ndm_flags \|= NTF_USE;
d04bc300 SH	475	} else {
	476	if (strcmp(*argv, "to") == 0) {
	477	NEXT_ARG();
	478	}
0849e60a SH	479	if (matches(*argv, "help") == 0)
0849e60a SH	480	usage();
d04bc300 SH	481	if (addr)
	482	duparg2("to", *argv);
	483	addr = *argv;
	484	}
	485	argc--; argv++;
	486	}
	487
	488	if (d == NULL \|\| addr == NULL) {
	489	fprintf(stderr, "Device and address are required arguments.\n");
42ecedd4	490	return -1;
d04bc300 SH	491	}
d04bc300 SH	492
0849e60a SH	493	/* Assume self */
	494	if (!(req.ndm.ndm_flags&(NTF_SELF\|NTF_MASTER)))
	495	req.ndm.ndm_flags \|= NTF_SELF;
	496
	497	/* Assume permanent */
	498	if (!(req.ndm.ndm_state&(NUD_PERMANENT\|NUD_REACHABLE)))
	499	req.ndm.ndm_state \|= NUD_PERMANENT;
	500
	501	if (sscanf(addr, "%hhx:%hhx:%hhx:%hhx:%hhx:%hhx",
d04bc300 SH	502	abuf, abuf+1, abuf+2,
	503	abuf+3, abuf+4, abuf+5) != 6) {
	504	fprintf(stderr, "Invalid mac address %s\n", addr);
42ecedd4	505	return -1;
d04bc300 SH	506	}
	507
	508	addattr_l(&req.n, sizeof(req), NDA_LLADDR, abuf, ETH_ALEN);
0849e60a SH	509	if (dst_ok)
0849e60a SH	510	addattr_l(&req.n, sizeof(req), NDA_DST, &dst.data, dst.bytelen);
d04bc300	511
fd08839c	512	if (vid >= 0)
8ae66094	513	addattr16(&req.n, sizeof(req), NDA_VLAN, vid);
fd08839c	514
5f409678 DS	515	if (port) {
	516	unsigned short dport;
	517
	518	dport = htons((unsigned short)port);
	519	addattr16(&req.n, sizeof(req), NDA_PORT, dport);
	520	}
	521	if (vni != ~0)
	522	addattr32(&req.n, sizeof(req), NDA_VNI, vni);
	523	if (via)
	524	addattr32(&req.n, sizeof(req), NDA_IFINDEX, via);
	525
d04bc300 SH	526	req.ndm.ndm_ifindex = ll_name_to_index(d);
	527	if (req.ndm.ndm_ifindex == 0) {
	528	fprintf(stderr, "Cannot find device \"%s\"\n", d);
	529	return -1;
	530	}
	531
c079e121	532	if (rtnl_talk(&rth, &req.n, NULL, 0) < 0)
42ecedd4	533	return -1;
d04bc300 SH	534
	535	return 0;
	536	}
	537
	538	int do_fdb(int argc, char **argv)
	539	{
	540	ll_init_map(&rth);
	541
	542	if (argc > 0) {
	543	if (matches(*argv, "add") == 0)
	544	return fdb_modify(RTM_NEWNEIGH, NLM_F_CREATE\|NLM_F_EXCL, argc-1, argv+1);
5f409678 DS	545	if (matches(*argv, "append") == 0)
5f409678 DS	546	return fdb_modify(RTM_NEWNEIGH, NLM_F_CREATE\|NLM_F_APPEND, argc-1, argv+1);
5464049b TR	547	if (matches(*argv, "replace") == 0)
5464049b TR	548	return fdb_modify(RTM_NEWNEIGH, NLM_F_CREATE\|NLM_F_REPLACE, argc-1, argv+1);
d04bc300 SH	549	if (matches(*argv, "delete") == 0)
	550	return fdb_modify(RTM_DELNEIGH, 0, argc-1, argv+1);
	551	if (matches(*argv, "show") == 0 \|\|
	552	matches(*argv, "lst") == 0 \|\|
	553	matches(*argv, "list") == 0)
	554	return fdb_show(argc-1, argv+1);
	555	if (matches(*argv, "help") == 0)
	556	usage();
	557	} else
	558	return fdb_show(0, NULL);
	559
083b46bb	560	fprintf(stderr, "Command \"%s\" is unknown, try \"bridge fdb help\".\n", *argv);
d04bc300 SH	561	exit(-1);
d04bc300 SH	562	}