[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"
		"       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, "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 = 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)
		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	{
bcddcddd SH	38	fprintf(stderr,
	39	"Usage: bridge fdb { add \| append \| del \| replace } ADDR dev DEV\n"
	40	" [ self ] [ master ] [ use ] [ router ]\n"
	41	" [ local \| static \| dynamic ] [ dst IPADDR ] [ vlan VID ]\n"
	42	" [ port PORT] [ vni VNI ] [ via DEV ]\n"
	43	" bridge fdb [ show [ br BRDEV ] [ brport DEV ] [ vlan VID ] [ state STATE ] ]\n");
d04bc300 SH	44	exit(-1);
	45	}
	46
df4b043f	47	static const char *state_n2a(unsigned int s)
d04bc300 SH	48	{
	49	static char buf[32];
	50
0849e60a SH	51	if (s & NUD_PERMANENT)
0849e60a SH	52	return "permanent";
d04bc300 SH	53
	54	if (s & NUD_NOARP)
	55	return "static";
	56
	57	if (s & NUD_STALE)
	58	return "stale";
0849e60a	59
d04bc300 SH	60	if (s & NUD_REACHABLE)
	61	return "";
	62
	63	sprintf(buf, "state=%#x", s);
	64	return buf;
	65	}
	66
7f10090b NA	67	static int state_a2n(unsigned int s, const char arg)
	68	{
	69	if (matches(arg, "permanent") == 0)
	70	*s = NUD_PERMANENT;
	71	else if (matches(arg, "static") == 0 \|\| matches(arg, "temp") == 0)
	72	*s = NUD_NOARP;
	73	else if (matches(arg, "stale") == 0)
	74	*s = NUD_STALE;
	75	else if (matches(arg, "reachable") == 0 \|\| matches(arg, "dynamic") == 0)
	76	*s = NUD_REACHABLE;
	77	else if (strcmp(arg, "all") == 0)
	78	*s = ~0;
	79	else if (get_unsigned(s, arg, 0))
	80	return -1;
	81
	82	return 0;
	83	}
	84
b239c56e AK	85	static void start_json_fdb_flags_array(bool *fdb_flags)
	86	{
	87	if (*fdb_flags)
	88	return;
	89	jsonw_name(jw_global, "flags");
	90	jsonw_start_array(jw_global);
	91	*fdb_flags = true;
	92	}
	93
d04bc300 SH	94	int print_fdb(const struct sockaddr_nl who, struct nlmsghdr n, void *arg)
d04bc300 SH	95	{
0849e60a	96	FILE *fp = arg;
d04bc300 SH	97	struct ndmsg *r = NLMSG_DATA(n);
d04bc300 SH	98	int len = n->nlmsg_len;
df4b043f	99	struct rtattr *tb[NDA_MAX+1];
ae6eb907	100	__u16 vid = 0;
b239c56e AK	101	bool fdb_flags = false;
b239c56e AK	102	const char *state_s;
0849e60a SH	103
	104	if (n->nlmsg_type != RTM_NEWNEIGH && n->nlmsg_type != RTM_DELNEIGH) {
	105	fprintf(stderr, "Not RTM_NEWNEIGH: %08x %08x %08x\n",
	106	n->nlmsg_len, n->nlmsg_type, n->nlmsg_flags);
0849e60a SH	107	return 0;
0849e60a SH	108	}
d04bc300 SH	109
	110	len -= NLMSG_LENGTH(sizeof(*r));
	111	if (len < 0) {
	112	fprintf(stderr, "BUG: wrong nlmsg len %d\n", len);
	113	return -1;
	114	}
	115
	116	if (r->ndm_family != AF_BRIDGE)
	117	return 0;
	118
	119	if (filter_index && filter_index != r->ndm_ifindex)
	120	return 0;
	121
7f10090b NA	122	if (filter_state && !(r->ndm_state & filter_state))
	123	return 0;
	124
d04bc300 SH	125	parse_rtattr(tb, NDA_MAX, NDA_RTA(r),
	126	n->nlmsg_len - NLMSG_LENGTH(sizeof(*r)));
	127
ae6eb907 NA	128	if (tb[NDA_VLAN])
	129	vid = rta_getattr_u16(tb[NDA_VLAN]);
	130
	131	if (filter_vlan && filter_vlan != vid)
	132	return 0;
	133
afd3921e	134	if (jw_global) {
	135	jsonw_pretty(jw_global, 1);
	136	jsonw_start_object(jw_global);
	137	}
	138
b239c56e AK	139	if (n->nlmsg_type == RTM_DELNEIGH) {
	140	if (jw_global)
	141	jsonw_string_field(jw_global, "opCode", "deleted");
	142	else
	143	fprintf(fp, "Deleted ");
	144	}
0849e60a SH	145
	146	if (tb[NDA_LLADDR]) {
	147	SPRINT_BUF(b1);
b239c56e AK	148	ll_addr_n2a(RTA_DATA(tb[NDA_LLADDR]),
	149	RTA_PAYLOAD(tb[NDA_LLADDR]),
	150	ll_index_to_type(r->ndm_ifindex),
	151	b1, sizeof(b1));
	152	if (jw_global)
	153	jsonw_string_field(jw_global, "mac", b1);
	154	else
	155	fprintf(fp, "%s ", b1);
d04bc300	156	}
38df7ac9	157
b239c56e AK	158	if (!filter_index && r->ndm_ifindex) {
	159	if (jw_global)
	160	jsonw_string_field(jw_global, "dev",
	161	ll_index_to_name(r->ndm_ifindex));
	162	else
	163	fprintf(fp, "dev %s ",
	164	ll_index_to_name(r->ndm_ifindex));
	165	}
0849e60a SH	166
0849e60a SH	167	if (tb[NDA_DST]) {
9e763fa5	168	int family = AF_INET;
b239c56e	169	const char *abuf_s;
9e763fa5 MR	170
	171	if (RTA_PAYLOAD(tb[NDA_DST]) == sizeof(struct in6_addr))
	172	family = AF_INET6;
	173
b239c56e AK	174	abuf_s = format_host(family,
	175	RTA_PAYLOAD(tb[NDA_DST]),
	176	RTA_DATA(tb[NDA_DST]));
	177	if (jw_global)
	178	jsonw_string_field(jw_global, "dst", abuf_s);
	179	else
	180	fprintf(fp, "dst %s ", abuf_s);
	181	}
	182
	183	if (vid) {
	184	if (jw_global)
	185	jsonw_uint_field(jw_global, "vlan", vid);
	186	else
	187	fprintf(fp, "vlan %hu ", vid);
	188	}
	189
	190	if (tb[NDA_PORT]) {
	191	if (jw_global)
	192	jsonw_uint_field(jw_global, "port",
aab0f610	193	rta_getattr_be16(tb[NDA_PORT]));
b239c56e AK	194	else
b239c56e AK	195	fprintf(fp, "port %d ",
aab0f610	196	rta_getattr_be16(tb[NDA_PORT]));
0849e60a	197	}
38df7ac9	198
b239c56e AK	199	if (tb[NDA_VNI]) {
	200	if (jw_global)
	201	jsonw_uint_field(jw_global, "vni",
	202	rta_getattr_u32(tb[NDA_VNI]));
	203	else
	204	fprintf(fp, "vni %d ",
	205	rta_getattr_u32(tb[NDA_VNI]));
	206	}
fd08839c	207
5f409678 DS	208	if (tb[NDA_IFINDEX]) {
	209	unsigned int ifindex = rta_getattr_u32(tb[NDA_IFINDEX]);
	210
	211	if (ifindex) {
	212	char ifname[IF_NAMESIZE];
	213
a4797670	214	if (!tb[NDA_LINK_NETNSID] &&
b239c56e AK	215	if_indextoname(ifindex, ifname)) {
	216	if (jw_global)
	217	jsonw_string_field(jw_global, "viaIf",
	218	ifname);
	219	else
	220	fprintf(fp, "via %s ", ifname);
	221	} else {
	222	if (jw_global)
	223	jsonw_uint_field(jw_global, "viaIfIndex",
	224	ifindex);
	225	else
	226	fprintf(fp, "via ifindex %u ", ifindex);
	227	}
5f409678 DS	228	}
5f409678 DS	229	}
b239c56e AK	230
	231	if (tb[NDA_LINK_NETNSID]) {
	232	if (jw_global)
	233	jsonw_uint_field(jw_global, "linkNetNsId",
	234	rta_getattr_u32(tb[NDA_LINK_NETNSID]));
	235	else
	236	fprintf(fp, "link-netnsid %d ",
	237	rta_getattr_u32(tb[NDA_LINK_NETNSID]));
	238	}
5f409678	239
d04bc300 SH	240	if (show_stats && tb[NDA_CACHEINFO]) {
d04bc300 SH	241	struct nda_cacheinfo *ci = RTA_DATA(tb[NDA_CACHEINFO]);
0849e60a	242	int hz = get_user_hz();
d04bc300	243
b239c56e AK	244	if (jw_global) {
	245	jsonw_uint_field(jw_global, "used",
	246	ci->ndm_used/hz);
	247	jsonw_uint_field(jw_global, "updated",
	248	ci->ndm_updated/hz);
	249	} else {
	250	fprintf(fp, "used %d/%d ", ci->ndm_used/hz,
	251	ci->ndm_updated/hz);
	252	}
	253	}
	254
	255	if (jw_global) {
	256	if (r->ndm_flags & NTF_SELF) {
	257	start_json_fdb_flags_array(&fdb_flags);
	258	jsonw_string(jw_global, "self");
	259	}
	260	if (r->ndm_flags & NTF_ROUTER) {
	261	start_json_fdb_flags_array(&fdb_flags);
	262	jsonw_string(jw_global, "router");
	263	}
	264	if (r->ndm_flags & NTF_EXT_LEARNED) {
8a38e44f AS	265	start_json_fdb_flags_array(&fdb_flags);
	266	jsonw_string(jw_global, "extern_learn");
	267	}
	268	if (r->ndm_flags & NTF_OFFLOADED) {
b239c56e AK	269	start_json_fdb_flags_array(&fdb_flags);
	270	jsonw_string(jw_global, "offload");
	271	}
	272	if (r->ndm_flags & NTF_MASTER)
	273	jsonw_string(jw_global, "master");
	274	if (fdb_flags)
	275	jsonw_end_array(jw_global);
	276
	277	if (tb[NDA_MASTER])
	278	jsonw_string_field(jw_global,
	279	"master",
	280	ll_index_to_name(rta_getattr_u32(tb[NDA_MASTER])));
	281
	282	} else {
	283	if (r->ndm_flags & NTF_SELF)
	284	fprintf(fp, "self ");
	285	if (r->ndm_flags & NTF_ROUTER)
	286	fprintf(fp, "router ");
	287	if (r->ndm_flags & NTF_EXT_LEARNED)
8a38e44f AS	288	fprintf(fp, "extern_learn ");
8a38e44f AS	289	if (r->ndm_flags & NTF_OFFLOADED)
b239c56e AK	290	fprintf(fp, "offload ");
	291	if (tb[NDA_MASTER]) {
	292	fprintf(fp, "master %s ",
	293	ll_index_to_name(rta_getattr_u32(tb[NDA_MASTER])));
	294	} else if (r->ndm_flags & NTF_MASTER) {
	295	fprintf(fp, "master ");
	296	}
	297	}
	298
	299	state_s = state_n2a(r->ndm_state);
	300	if (jw_global) {
	301	if (state_s[0])
	302	jsonw_string_field(jw_global, "state", state_s);
	303
	304	jsonw_end_object(jw_global);
	305	} else {
	306	fprintf(fp, "%s\n", state_s);
	307
	308	fflush(fp);
d04bc300	309	}
4d45bf3b	310
d04bc300 SH	311	return 0;
	312	}
	313
	314	static int fdb_show(int argc, char **argv)
	315	{
aeb14eb0	316	struct {
df4b043f	317	struct nlmsghdr n;
aeb14eb0	318	struct ifinfomsg ifm;
df4b043f	319	char buf[256];
d17b136f PS	320	} req = {
	321	.n.nlmsg_len = NLMSG_LENGTH(sizeof(struct ifinfomsg)),
	322	.ifm.ifi_family = PF_BRIDGE,
	323	};
aeb14eb0	324
d04bc300	325	char *filter_dev = NULL;
aeb14eb0 JHS	326	char *br = NULL;
	327	int msg_size = sizeof(struct ifinfomsg);
	328
d04bc300	329	while (argc > 0) {
aeb14eb0	330	if ((strcmp(argv, "brport") == 0) \|\| strcmp(argv, "dev") == 0) {
d04bc300	331	NEXT_ARG();
d04bc300	332	filter_dev = *argv;
aeb14eb0 JHS	333	} else if (strcmp(*argv, "br") == 0) {
	334	NEXT_ARG();
	335	br = *argv;
ae6eb907 NA	336	} else if (strcmp(*argv, "vlan") == 0) {
	337	NEXT_ARG();
	338	if (filter_vlan)
	339	duparg("vlan", *argv);
	340	filter_vlan = atoi(*argv);
7f10090b NA	341	} else if (strcmp(*argv, "state") == 0) {
	342	unsigned int state;
	343
	344	NEXT_ARG();
	345	if (state_a2n(&state, *argv))
	346	invarg("invalid state", *argv);
	347	filter_state \|= state;
aeb14eb0 JHS	348	} else {
	349	if (matches(*argv, "help") == 0)
	350	usage();
d04bc300 SH	351	}
	352	argc--; argv++;
	353	}
	354
aeb14eb0 JHS	355	if (br) {
aeb14eb0 JHS	356	int br_ifindex = ll_name_to_index(br);
df4b043f	357
aeb14eb0 JHS	358	if (br_ifindex == 0) {
	359	fprintf(stderr, "Cannot find bridge device \"%s\"\n", br);
	360	return -1;
	361	}
	362	addattr32(&req.n, sizeof(req), IFLA_MASTER, br_ifindex);
	363	msg_size += RTA_LENGTH(4);
	364	}
	365
	366	/we'll keep around filter_dev for older kernels /
d04bc300	367	if (filter_dev) {
0849e60a SH	368	filter_index = if_nametoindex(filter_dev);
	369	if (filter_index == 0) {
	370	fprintf(stderr, "Cannot find device \"%s\"\n",
	371	filter_dev);
d04bc300 SH	372	return -1;
d04bc300 SH	373	}
aeb14eb0	374	req.ifm.ifi_index = filter_index;
d04bc300 SH	375	}
d04bc300 SH	376
aeb14eb0	377	if (rtnl_dump_request(&rth, RTM_GETNEIGH, &req.ifm, msg_size) < 0) {
d04bc300 SH	378	perror("Cannot send dump request");
	379	exit(1);
	380	}
d04bc300	381
b239c56e AK	382	if (json_output) {
	383	jw_global = jsonw_new(stdout);
	384	if (!jw_global) {
	385	fprintf(stderr, "Error allocation json object\n");
	386	exit(1);
	387	}
	388	jsonw_start_array(jw_global);
	389	}
0849e60a	390	if (rtnl_dump_filter(&rth, print_fdb, stdout) < 0) {
d04bc300 SH	391	fprintf(stderr, "Dump terminated\n");
	392	exit(1);
	393	}
b239c56e AK	394	if (jw_global) {
	395	jsonw_end_array(jw_global);
	396	jsonw_destroy(&jw_global);
	397	}
d04bc300 SH	398
	399	return 0;
	400	}
	401
	402	static int fdb_modify(int cmd, int flags, int argc, char **argv)
	403	{
	404	struct {
df4b043f SH	405	struct nlmsghdr n;
	406	struct ndmsg ndm;
	407	char buf[256];
d17b136f PS	408	} req = {
	409	.n.nlmsg_len = NLMSG_LENGTH(sizeof(struct ndmsg)),
	410	.n.nlmsg_flags = NLM_F_REQUEST \| flags,
	411	.n.nlmsg_type = cmd,
	412	.ndm.ndm_family = PF_BRIDGE,
	413	.ndm.ndm_state = NUD_NOARP,
	414	};
d04bc300 SH	415	char *addr = NULL;
	416	char *d = NULL;
	417	char abuf[ETH_ALEN];
0849e60a SH	418	int dst_ok = 0;
0849e60a SH	419	inet_prefix dst;
5f409678 DS	420	unsigned long port = 0;
	421	unsigned long vni = ~0;
	422	unsigned int via = 0;
	423	char *endptr;
fd08839c	424	short vid = -1;
d04bc300	425
d04bc300 SH	426	while (argc > 0) {
	427	if (strcmp(*argv, "dev") == 0) {
	428	NEXT_ARG();
	429	d = *argv;
0849e60a SH	430	} else if (strcmp(*argv, "dst") == 0) {
	431	NEXT_ARG();
	432	if (dst_ok)
	433	duparg2("dst", *argv);
	434	get_addr(&dst, *argv, preferred_family);
	435	dst_ok = 1;
5f409678 DS	436	} else if (strcmp(*argv, "port") == 0) {
	437
	438	NEXT_ARG();
	439	port = strtoul(*argv, &endptr, 0);
	440	if (endptr && *endptr) {
	441	struct servent *pse;
	442
	443	pse = getservbyname(*argv, "udp");
	444	if (!pse)
	445	invarg("invalid port\n", *argv);
	446	port = ntohs(pse->s_port);
	447	} else if (port > 0xffff)
	448	invarg("invalid port\n", *argv);
	449	} else if (strcmp(*argv, "vni") == 0) {
	450	NEXT_ARG();
	451	vni = strtoul(*argv, &endptr, 0);
	452	if ((endptr && *endptr) \|\|
	453	(vni >> 24) \|\| vni == ULONG_MAX)
	454	invarg("invalid VNI\n", *argv);
	455	} else if (strcmp(*argv, "via") == 0) {
	456	NEXT_ARG();
	457	via = if_nametoindex(*argv);
	458	if (via == 0)
	459	invarg("invalid device\n", *argv);
dc6a6a25 JF	460	} else if (strcmp(*argv, "self") == 0) {
dc6a6a25 JF	461	req.ndm.ndm_flags \|= NTF_SELF;
0849e60a	462	} else if (matches(*argv, "master") == 0) {
dc6a6a25	463	req.ndm.ndm_flags \|= NTF_MASTER;
5b8a1d4a DS	464	} else if (matches(*argv, "router") == 0) {
5b8a1d4a DS	465	req.ndm.ndm_flags \|= NTF_ROUTER;
e9e9365b	466	} else if (matches(*argv, "local") == 0 \|\|
0849e60a SH	467	matches(*argv, "permanent") == 0) {
0849e60a SH	468	req.ndm.ndm_state \|= NUD_PERMANENT;
a1987cd1 RP	469	} else if (matches(*argv, "temp") == 0 \|\|
a1987cd1 RP	470	matches(*argv, "static") == 0) {
0849e60a	471	req.ndm.ndm_state \|= NUD_REACHABLE;
c6d0cfb5 RP	472	} else if (matches(*argv, "dynamic") == 0) {
	473	req.ndm.ndm_state \|= NUD_REACHABLE;
	474	req.ndm.ndm_state &= ~NUD_NOARP;
fd08839c VY	475	} else if (matches(*argv, "vlan") == 0) {
	476	if (vid >= 0)
	477	duparg2("vlan", *argv);
	478	NEXT_ARG();
	479	vid = atoi(*argv);
cd8df30b RP	480	} else if (matches(*argv, "use") == 0) {
cd8df30b RP	481	req.ndm.ndm_flags \|= NTF_USE;
d04bc300	482	} else {
bcddcddd	483	if (strcmp(*argv, "to") == 0)
d04bc300	484	NEXT_ARG();
bcddcddd	485
0849e60a SH	486	if (matches(*argv, "help") == 0)
0849e60a SH	487	usage();
d04bc300 SH	488	if (addr)
	489	duparg2("to", *argv);
	490	addr = *argv;
	491	}
	492	argc--; argv++;
	493	}
	494
	495	if (d == NULL \|\| addr == NULL) {
	496	fprintf(stderr, "Device and address are required arguments.\n");
42ecedd4	497	return -1;
d04bc300 SH	498	}
d04bc300 SH	499
0849e60a SH	500	/* Assume self */
	501	if (!(req.ndm.ndm_flags&(NTF_SELF\|NTF_MASTER)))
	502	req.ndm.ndm_flags \|= NTF_SELF;
	503
	504	/* Assume permanent */
	505	if (!(req.ndm.ndm_state&(NUD_PERMANENT\|NUD_REACHABLE)))
	506	req.ndm.ndm_state \|= NUD_PERMANENT;
	507
	508	if (sscanf(addr, "%hhx:%hhx:%hhx:%hhx:%hhx:%hhx",
d04bc300 SH	509	abuf, abuf+1, abuf+2,
	510	abuf+3, abuf+4, abuf+5) != 6) {
	511	fprintf(stderr, "Invalid mac address %s\n", addr);
42ecedd4	512	return -1;
d04bc300 SH	513	}
	514
	515	addattr_l(&req.n, sizeof(req), NDA_LLADDR, abuf, ETH_ALEN);
0849e60a SH	516	if (dst_ok)
0849e60a SH	517	addattr_l(&req.n, sizeof(req), NDA_DST, &dst.data, dst.bytelen);
d04bc300	518
fd08839c	519	if (vid >= 0)
8ae66094	520	addattr16(&req.n, sizeof(req), NDA_VLAN, vid);
fd08839c	521
5f409678 DS	522	if (port) {
	523	unsigned short dport;
	524
	525	dport = htons((unsigned short)port);
	526	addattr16(&req.n, sizeof(req), NDA_PORT, dport);
	527	}
	528	if (vni != ~0)
	529	addattr32(&req.n, sizeof(req), NDA_VNI, vni);
	530	if (via)
	531	addattr32(&req.n, sizeof(req), NDA_IFINDEX, via);
	532
d04bc300 SH	533	req.ndm.ndm_ifindex = ll_name_to_index(d);
	534	if (req.ndm.ndm_ifindex == 0) {
	535	fprintf(stderr, "Cannot find device \"%s\"\n", d);
	536	return -1;
	537	}
	538
86bf43c7	539	if (rtnl_talk(&rth, &req.n, NULL) < 0)
42ecedd4	540	return -1;
d04bc300 SH	541
	542	return 0;
	543	}
	544
	545	int do_fdb(int argc, char **argv)
	546	{
	547	ll_init_map(&rth);
	548
	549	if (argc > 0) {
	550	if (matches(*argv, "add") == 0)
	551	return fdb_modify(RTM_NEWNEIGH, NLM_F_CREATE\|NLM_F_EXCL, argc-1, argv+1);
5f409678 DS	552	if (matches(*argv, "append") == 0)
5f409678 DS	553	return fdb_modify(RTM_NEWNEIGH, NLM_F_CREATE\|NLM_F_APPEND, argc-1, argv+1);
5464049b TR	554	if (matches(*argv, "replace") == 0)
5464049b TR	555	return fdb_modify(RTM_NEWNEIGH, NLM_F_CREATE\|NLM_F_REPLACE, argc-1, argv+1);
d04bc300 SH	556	if (matches(*argv, "delete") == 0)
	557	return fdb_modify(RTM_DELNEIGH, 0, argc-1, argv+1);
	558	if (matches(*argv, "show") == 0 \|\|
	559	matches(*argv, "lst") == 0 \|\|
	560	matches(*argv, "list") == 0)
	561	return fdb_show(argc-1, argv+1);
	562	if (matches(*argv, "help") == 0)
	563	usage();
	564	} else
	565	return fdb_show(0, NULL);
	566
083b46bb	567	fprintf(stderr, "Command \"%s\" is unknown, try \"bridge fdb help\".\n", *argv);
d04bc300 SH	568	exit(-1);
d04bc300 SH	569	}