[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;

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 ] ]\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 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;

	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 (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
ae6eb907	32	static unsigned int filter_index, filter_vlan;
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");
ae6eb907	42	fprintf(stderr, " bridge fdb [ show [ br BRDEV ] [ brport DEV ] [ vlan VID ] ]\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
b239c56e AK	66	static void start_json_fdb_flags_array(bool *fdb_flags)
	67	{
	68	if (*fdb_flags)
	69	return;
	70	jsonw_name(jw_global, "flags");
	71	jsonw_start_array(jw_global);
	72	*fdb_flags = true;
	73	}
	74
d04bc300 SH	75	int print_fdb(const struct sockaddr_nl who, struct nlmsghdr n, void *arg)
d04bc300 SH	76	{
0849e60a	77	FILE *fp = arg;
d04bc300 SH	78	struct ndmsg *r = NLMSG_DATA(n);
d04bc300 SH	79	int len = n->nlmsg_len;
df4b043f	80	struct rtattr *tb[NDA_MAX+1];
ae6eb907	81	__u16 vid = 0;
b239c56e AK	82	bool fdb_flags = false;
b239c56e AK	83	const char *state_s;
0849e60a SH	84
	85	if (n->nlmsg_type != RTM_NEWNEIGH && n->nlmsg_type != RTM_DELNEIGH) {
	86	fprintf(stderr, "Not RTM_NEWNEIGH: %08x %08x %08x\n",
	87	n->nlmsg_len, n->nlmsg_type, n->nlmsg_flags);
0849e60a SH	88	return 0;
0849e60a SH	89	}
d04bc300 SH	90
	91	len -= NLMSG_LENGTH(sizeof(*r));
	92	if (len < 0) {
	93	fprintf(stderr, "BUG: wrong nlmsg len %d\n", len);
	94	return -1;
	95	}
	96
	97	if (r->ndm_family != AF_BRIDGE)
	98	return 0;
	99
	100	if (filter_index && filter_index != r->ndm_ifindex)
	101	return 0;
	102
	103	parse_rtattr(tb, NDA_MAX, NDA_RTA(r),
	104	n->nlmsg_len - NLMSG_LENGTH(sizeof(*r)));
	105
ae6eb907 NA	106	if (tb[NDA_VLAN])
	107	vid = rta_getattr_u16(tb[NDA_VLAN]);
	108
	109	if (filter_vlan && filter_vlan != vid)
	110	return 0;
	111
afd3921e	112	if (jw_global) {
	113	jsonw_pretty(jw_global, 1);
	114	jsonw_start_object(jw_global);
	115	}
	116
b239c56e AK	117	if (n->nlmsg_type == RTM_DELNEIGH) {
	118	if (jw_global)
	119	jsonw_string_field(jw_global, "opCode", "deleted");
	120	else
	121	fprintf(fp, "Deleted ");
	122	}
0849e60a SH	123
	124	if (tb[NDA_LLADDR]) {
	125	SPRINT_BUF(b1);
b239c56e AK	126	ll_addr_n2a(RTA_DATA(tb[NDA_LLADDR]),
	127	RTA_PAYLOAD(tb[NDA_LLADDR]),
	128	ll_index_to_type(r->ndm_ifindex),
	129	b1, sizeof(b1));
	130	if (jw_global)
	131	jsonw_string_field(jw_global, "mac", b1);
	132	else
	133	fprintf(fp, "%s ", b1);
d04bc300	134	}
38df7ac9	135
b239c56e AK	136	if (!filter_index && r->ndm_ifindex) {
	137	if (jw_global)
	138	jsonw_string_field(jw_global, "dev",
	139	ll_index_to_name(r->ndm_ifindex));
	140	else
	141	fprintf(fp, "dev %s ",
	142	ll_index_to_name(r->ndm_ifindex));
	143	}
0849e60a SH	144
0849e60a SH	145	if (tb[NDA_DST]) {
9e763fa5	146	int family = AF_INET;
b239c56e	147	const char *abuf_s;
9e763fa5 MR	148
	149	if (RTA_PAYLOAD(tb[NDA_DST]) == sizeof(struct in6_addr))
	150	family = AF_INET6;
	151
b239c56e AK	152	abuf_s = format_host(family,
	153	RTA_PAYLOAD(tb[NDA_DST]),
	154	RTA_DATA(tb[NDA_DST]));
	155	if (jw_global)
	156	jsonw_string_field(jw_global, "dst", abuf_s);
	157	else
	158	fprintf(fp, "dst %s ", abuf_s);
	159	}
	160
	161	if (vid) {
	162	if (jw_global)
	163	jsonw_uint_field(jw_global, "vlan", vid);
	164	else
	165	fprintf(fp, "vlan %hu ", vid);
	166	}
	167
	168	if (tb[NDA_PORT]) {
	169	if (jw_global)
	170	jsonw_uint_field(jw_global, "port",
aab0f610	171	rta_getattr_be16(tb[NDA_PORT]));
b239c56e AK	172	else
b239c56e AK	173	fprintf(fp, "port %d ",
aab0f610	174	rta_getattr_be16(tb[NDA_PORT]));
0849e60a	175	}
38df7ac9	176
b239c56e AK	177	if (tb[NDA_VNI]) {
	178	if (jw_global)
	179	jsonw_uint_field(jw_global, "vni",
	180	rta_getattr_u32(tb[NDA_VNI]));
	181	else
	182	fprintf(fp, "vni %d ",
	183	rta_getattr_u32(tb[NDA_VNI]));
	184	}
fd08839c	185
5f409678 DS	186	if (tb[NDA_IFINDEX]) {
	187	unsigned int ifindex = rta_getattr_u32(tb[NDA_IFINDEX]);
	188
	189	if (ifindex) {
	190	char ifname[IF_NAMESIZE];
	191
a4797670	192	if (!tb[NDA_LINK_NETNSID] &&
b239c56e AK	193	if_indextoname(ifindex, ifname)) {
	194	if (jw_global)
	195	jsonw_string_field(jw_global, "viaIf",
	196	ifname);
	197	else
	198	fprintf(fp, "via %s ", ifname);
	199	} else {
	200	if (jw_global)
	201	jsonw_uint_field(jw_global, "viaIfIndex",
	202	ifindex);
	203	else
	204	fprintf(fp, "via ifindex %u ", ifindex);
	205	}
5f409678 DS	206	}
5f409678 DS	207	}
b239c56e AK	208
	209	if (tb[NDA_LINK_NETNSID]) {
	210	if (jw_global)
	211	jsonw_uint_field(jw_global, "linkNetNsId",
	212	rta_getattr_u32(tb[NDA_LINK_NETNSID]));
	213	else
	214	fprintf(fp, "link-netnsid %d ",
	215	rta_getattr_u32(tb[NDA_LINK_NETNSID]));
	216	}
5f409678	217
d04bc300 SH	218	if (show_stats && tb[NDA_CACHEINFO]) {
d04bc300 SH	219	struct nda_cacheinfo *ci = RTA_DATA(tb[NDA_CACHEINFO]);
0849e60a	220	int hz = get_user_hz();
d04bc300	221
b239c56e AK	222	if (jw_global) {
	223	jsonw_uint_field(jw_global, "used",
	224	ci->ndm_used/hz);
	225	jsonw_uint_field(jw_global, "updated",
	226	ci->ndm_updated/hz);
	227	} else {
	228	fprintf(fp, "used %d/%d ", ci->ndm_used/hz,
	229	ci->ndm_updated/hz);
	230	}
	231	}
	232
	233	if (jw_global) {
	234	if (r->ndm_flags & NTF_SELF) {
	235	start_json_fdb_flags_array(&fdb_flags);
	236	jsonw_string(jw_global, "self");
	237	}
	238	if (r->ndm_flags & NTF_ROUTER) {
	239	start_json_fdb_flags_array(&fdb_flags);
	240	jsonw_string(jw_global, "router");
	241	}
	242	if (r->ndm_flags & NTF_EXT_LEARNED) {
	243	start_json_fdb_flags_array(&fdb_flags);
	244	jsonw_string(jw_global, "offload");
	245	}
	246	if (r->ndm_flags & NTF_MASTER)
	247	jsonw_string(jw_global, "master");
	248	if (fdb_flags)
	249	jsonw_end_array(jw_global);
	250
	251	if (tb[NDA_MASTER])
	252	jsonw_string_field(jw_global,
	253	"master",
	254	ll_index_to_name(rta_getattr_u32(tb[NDA_MASTER])));
	255
	256	} else {
	257	if (r->ndm_flags & NTF_SELF)
	258	fprintf(fp, "self ");
	259	if (r->ndm_flags & NTF_ROUTER)
	260	fprintf(fp, "router ");
	261	if (r->ndm_flags & NTF_EXT_LEARNED)
	262	fprintf(fp, "offload ");
	263	if (tb[NDA_MASTER]) {
	264	fprintf(fp, "master %s ",
	265	ll_index_to_name(rta_getattr_u32(tb[NDA_MASTER])));
	266	} else if (r->ndm_flags & NTF_MASTER) {
	267	fprintf(fp, "master ");
	268	}
	269	}
	270
	271	state_s = state_n2a(r->ndm_state);
	272	if (jw_global) {
	273	if (state_s[0])
	274	jsonw_string_field(jw_global, "state", state_s);
	275
	276	jsonw_end_object(jw_global);
	277	} else {
	278	fprintf(fp, "%s\n", state_s);
	279
	280	fflush(fp);
d04bc300	281	}
4d45bf3b	282
d04bc300 SH	283	return 0;
	284	}
	285
	286	static int fdb_show(int argc, char **argv)
	287	{
aeb14eb0	288	struct {
df4b043f	289	struct nlmsghdr n;
aeb14eb0	290	struct ifinfomsg ifm;
df4b043f	291	char buf[256];
d17b136f PS	292	} req = {
	293	.n.nlmsg_len = NLMSG_LENGTH(sizeof(struct ifinfomsg)),
	294	.ifm.ifi_family = PF_BRIDGE,
	295	};
aeb14eb0	296
d04bc300	297	char *filter_dev = NULL;
aeb14eb0 JHS	298	char *br = NULL;
	299	int msg_size = sizeof(struct ifinfomsg);
	300
d04bc300	301	while (argc > 0) {
aeb14eb0	302	if ((strcmp(argv, "brport") == 0) \|\| strcmp(argv, "dev") == 0) {
d04bc300	303	NEXT_ARG();
d04bc300	304	filter_dev = *argv;
aeb14eb0 JHS	305	} else if (strcmp(*argv, "br") == 0) {
	306	NEXT_ARG();
	307	br = *argv;
ae6eb907 NA	308	} else if (strcmp(*argv, "vlan") == 0) {
	309	NEXT_ARG();
	310	if (filter_vlan)
	311	duparg("vlan", *argv);
	312	filter_vlan = atoi(*argv);
aeb14eb0 JHS	313	} else {
	314	if (matches(*argv, "help") == 0)
	315	usage();
d04bc300 SH	316	}
	317	argc--; argv++;
	318	}
	319
aeb14eb0 JHS	320	if (br) {
aeb14eb0 JHS	321	int br_ifindex = ll_name_to_index(br);
df4b043f	322
aeb14eb0 JHS	323	if (br_ifindex == 0) {
	324	fprintf(stderr, "Cannot find bridge device \"%s\"\n", br);
	325	return -1;
	326	}
	327	addattr32(&req.n, sizeof(req), IFLA_MASTER, br_ifindex);
	328	msg_size += RTA_LENGTH(4);
	329	}
	330
	331	/we'll keep around filter_dev for older kernels /
d04bc300	332	if (filter_dev) {
0849e60a SH	333	filter_index = if_nametoindex(filter_dev);
	334	if (filter_index == 0) {
	335	fprintf(stderr, "Cannot find device \"%s\"\n",
	336	filter_dev);
d04bc300 SH	337	return -1;
d04bc300 SH	338	}
aeb14eb0	339	req.ifm.ifi_index = filter_index;
d04bc300 SH	340	}
d04bc300 SH	341
aeb14eb0	342	if (rtnl_dump_request(&rth, RTM_GETNEIGH, &req.ifm, msg_size) < 0) {
d04bc300 SH	343	perror("Cannot send dump request");
	344	exit(1);
	345	}
d04bc300	346
b239c56e AK	347	if (json_output) {
	348	jw_global = jsonw_new(stdout);
	349	if (!jw_global) {
	350	fprintf(stderr, "Error allocation json object\n");
	351	exit(1);
	352	}
	353	jsonw_start_array(jw_global);
	354	}
0849e60a	355	if (rtnl_dump_filter(&rth, print_fdb, stdout) < 0) {
d04bc300 SH	356	fprintf(stderr, "Dump terminated\n");
	357	exit(1);
	358	}
b239c56e AK	359	if (jw_global) {
	360	jsonw_end_array(jw_global);
	361	jsonw_destroy(&jw_global);
	362	}
d04bc300 SH	363
	364	return 0;
	365	}
	366
	367	static int fdb_modify(int cmd, int flags, int argc, char **argv)
	368	{
	369	struct {
df4b043f SH	370	struct nlmsghdr n;
	371	struct ndmsg ndm;
	372	char buf[256];
d17b136f PS	373	} req = {
	374	.n.nlmsg_len = NLMSG_LENGTH(sizeof(struct ndmsg)),
	375	.n.nlmsg_flags = NLM_F_REQUEST \| flags,
	376	.n.nlmsg_type = cmd,
	377	.ndm.ndm_family = PF_BRIDGE,
	378	.ndm.ndm_state = NUD_NOARP,
	379	};
d04bc300 SH	380	char *addr = NULL;
	381	char *d = NULL;
	382	char abuf[ETH_ALEN];
0849e60a SH	383	int dst_ok = 0;
0849e60a SH	384	inet_prefix dst;
5f409678 DS	385	unsigned long port = 0;
	386	unsigned long vni = ~0;
	387	unsigned int via = 0;
	388	char *endptr;
fd08839c	389	short vid = -1;
d04bc300	390
d04bc300 SH	391	while (argc > 0) {
	392	if (strcmp(*argv, "dev") == 0) {
	393	NEXT_ARG();
	394	d = *argv;
0849e60a SH	395	} else if (strcmp(*argv, "dst") == 0) {
	396	NEXT_ARG();
	397	if (dst_ok)
	398	duparg2("dst", *argv);
	399	get_addr(&dst, *argv, preferred_family);
	400	dst_ok = 1;
5f409678 DS	401	} else if (strcmp(*argv, "port") == 0) {
	402
	403	NEXT_ARG();
	404	port = strtoul(*argv, &endptr, 0);
	405	if (endptr && *endptr) {
	406	struct servent *pse;
	407
	408	pse = getservbyname(*argv, "udp");
	409	if (!pse)
	410	invarg("invalid port\n", *argv);
	411	port = ntohs(pse->s_port);
	412	} else if (port > 0xffff)
	413	invarg("invalid port\n", *argv);
	414	} else if (strcmp(*argv, "vni") == 0) {
	415	NEXT_ARG();
	416	vni = strtoul(*argv, &endptr, 0);
	417	if ((endptr && *endptr) \|\|
	418	(vni >> 24) \|\| vni == ULONG_MAX)
	419	invarg("invalid VNI\n", *argv);
	420	} else if (strcmp(*argv, "via") == 0) {
	421	NEXT_ARG();
	422	via = if_nametoindex(*argv);
	423	if (via == 0)
	424	invarg("invalid device\n", *argv);
dc6a6a25 JF	425	} else if (strcmp(*argv, "self") == 0) {
dc6a6a25 JF	426	req.ndm.ndm_flags \|= NTF_SELF;
0849e60a	427	} else if (matches(*argv, "master") == 0) {
dc6a6a25	428	req.ndm.ndm_flags \|= NTF_MASTER;
5b8a1d4a DS	429	} else if (matches(*argv, "router") == 0) {
5b8a1d4a DS	430	req.ndm.ndm_flags \|= NTF_ROUTER;
e9e9365b	431	} else if (matches(*argv, "local") == 0 \|\|
0849e60a SH	432	matches(*argv, "permanent") == 0) {
0849e60a SH	433	req.ndm.ndm_state \|= NUD_PERMANENT;
a1987cd1 RP	434	} else if (matches(*argv, "temp") == 0 \|\|
a1987cd1 RP	435	matches(*argv, "static") == 0) {
0849e60a	436	req.ndm.ndm_state \|= NUD_REACHABLE;
c6d0cfb5 RP	437	} else if (matches(*argv, "dynamic") == 0) {
	438	req.ndm.ndm_state \|= NUD_REACHABLE;
	439	req.ndm.ndm_state &= ~NUD_NOARP;
fd08839c VY	440	} else if (matches(*argv, "vlan") == 0) {
	441	if (vid >= 0)
	442	duparg2("vlan", *argv);
	443	NEXT_ARG();
	444	vid = atoi(*argv);
cd8df30b RP	445	} else if (matches(*argv, "use") == 0) {
cd8df30b RP	446	req.ndm.ndm_flags \|= NTF_USE;
d04bc300 SH	447	} else {
	448	if (strcmp(*argv, "to") == 0) {
	449	NEXT_ARG();
	450	}
0849e60a SH	451	if (matches(*argv, "help") == 0)
0849e60a SH	452	usage();
d04bc300 SH	453	if (addr)
	454	duparg2("to", *argv);
	455	addr = *argv;
	456	}
	457	argc--; argv++;
	458	}
	459
	460	if (d == NULL \|\| addr == NULL) {
	461	fprintf(stderr, "Device and address are required arguments.\n");
42ecedd4	462	return -1;
d04bc300 SH	463	}
d04bc300 SH	464
0849e60a SH	465	/* Assume self */
	466	if (!(req.ndm.ndm_flags&(NTF_SELF\|NTF_MASTER)))
	467	req.ndm.ndm_flags \|= NTF_SELF;
	468
	469	/* Assume permanent */
	470	if (!(req.ndm.ndm_state&(NUD_PERMANENT\|NUD_REACHABLE)))
	471	req.ndm.ndm_state \|= NUD_PERMANENT;
	472
	473	if (sscanf(addr, "%hhx:%hhx:%hhx:%hhx:%hhx:%hhx",
d04bc300 SH	474	abuf, abuf+1, abuf+2,
	475	abuf+3, abuf+4, abuf+5) != 6) {
	476	fprintf(stderr, "Invalid mac address %s\n", addr);
42ecedd4	477	return -1;
d04bc300 SH	478	}
	479
	480	addattr_l(&req.n, sizeof(req), NDA_LLADDR, abuf, ETH_ALEN);
0849e60a SH	481	if (dst_ok)
0849e60a SH	482	addattr_l(&req.n, sizeof(req), NDA_DST, &dst.data, dst.bytelen);
d04bc300	483
fd08839c	484	if (vid >= 0)
8ae66094	485	addattr16(&req.n, sizeof(req), NDA_VLAN, vid);
fd08839c	486
5f409678 DS	487	if (port) {
	488	unsigned short dport;
	489
	490	dport = htons((unsigned short)port);
	491	addattr16(&req.n, sizeof(req), NDA_PORT, dport);
	492	}
	493	if (vni != ~0)
	494	addattr32(&req.n, sizeof(req), NDA_VNI, vni);
	495	if (via)
	496	addattr32(&req.n, sizeof(req), NDA_IFINDEX, via);
	497
d04bc300 SH	498	req.ndm.ndm_ifindex = ll_name_to_index(d);
	499	if (req.ndm.ndm_ifindex == 0) {
	500	fprintf(stderr, "Cannot find device \"%s\"\n", d);
	501	return -1;
	502	}
	503
c079e121	504	if (rtnl_talk(&rth, &req.n, NULL, 0) < 0)
42ecedd4	505	return -1;
d04bc300 SH	506
	507	return 0;
	508	}
	509
	510	int do_fdb(int argc, char **argv)
	511	{
	512	ll_init_map(&rth);
	513
	514	if (argc > 0) {
	515	if (matches(*argv, "add") == 0)
	516	return fdb_modify(RTM_NEWNEIGH, NLM_F_CREATE\|NLM_F_EXCL, argc-1, argv+1);
5f409678 DS	517	if (matches(*argv, "append") == 0)
5f409678 DS	518	return fdb_modify(RTM_NEWNEIGH, NLM_F_CREATE\|NLM_F_APPEND, argc-1, argv+1);
5464049b TR	519	if (matches(*argv, "replace") == 0)
5464049b TR	520	return fdb_modify(RTM_NEWNEIGH, NLM_F_CREATE\|NLM_F_REPLACE, argc-1, argv+1);
d04bc300 SH	521	if (matches(*argv, "delete") == 0)
	522	return fdb_modify(RTM_DELNEIGH, 0, argc-1, argv+1);
	523	if (matches(*argv, "show") == 0 \|\|
	524	matches(*argv, "lst") == 0 \|\|
	525	matches(*argv, "list") == 0)
	526	return fdb_show(argc-1, argv+1);
	527	if (matches(*argv, "help") == 0)
	528	usage();
	529	} else
	530	return fdb_show(0, NULL);
	531
083b46bb	532	fprintf(stderr, "Command \"%s\" is unknown, try \"bridge fdb help\".\n", *argv);
d04bc300 SH	533	exit(-1);
d04bc300 SH	534	}