[mirror_iproute2.git] / bridge / fdb.c

/* SPDX-License-Identifier: GPL-2.0 */
/*
 * 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 <stdbool.h>

#include "json_print.h"
#include "libnetlink.h"
#include "br_common.h"
#include "rt_names.h"
#include "utils.h"

static unsigned int filter_index, filter_vlan, filter_state, filter_master;

static void usage(void)
{
	fprintf(stderr,
		"Usage: bridge fdb { add | append | del | replace } ADDR dev DEV\n"
		"              [ self ] [ master ] [ use ] [ router ] [ extern_learn ]\n"
		"              [ sticky ] [ local | static | dynamic ] [ dst IPADDR ]\n"
		"              [ vlan VID ] [ port PORT] [ vni VNI ] [ via DEV ]\n"
		"              [ src_vni VNI ]\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 fdb_print_flags(FILE *fp, unsigned int flags)
{
	open_json_array(PRINT_JSON,
			is_json_context() ?  "flags" : "");

	if (flags & NTF_SELF)
		print_string(PRINT_ANY, NULL, "%s ", "self");

	if (flags & NTF_ROUTER)
		print_string(PRINT_ANY, NULL, "%s ", "router");

	if (flags & NTF_EXT_LEARNED)
		print_string(PRINT_ANY, NULL, "%s ", "extern_learn");

	if (flags & NTF_OFFLOADED)
		print_string(PRINT_ANY, NULL, "%s ", "offload");

	if (flags & NTF_MASTER)
		print_string(PRINT_ANY, NULL, "%s ", "master");

	if (flags & NTF_STICKY)
		print_string(PRINT_ANY, NULL, "%s ", "sticky");

	close_json_array(PRINT_JSON, NULL);
}

static void fdb_print_stats(FILE *fp, const struct nda_cacheinfo *ci)
{
	static int hz;

	if (!hz)
		hz = get_user_hz();

	if (is_json_context()) {
		print_uint(PRINT_JSON, "used", NULL,
				 ci->ndm_used / hz);
		print_uint(PRINT_JSON, "updated", NULL,
				ci->ndm_updated / hz);
	} else {
		fprintf(fp, "used %d/%d ", ci->ndm_used / hz,
					ci->ndm_updated / hz);

	}
}

int print_fdb(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;

	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;

	open_json_object(NULL);
	if (n->nlmsg_type == RTM_DELNEIGH)
		print_bool(PRINT_ANY, "deleted", "Deleted ", true);

	if (tb[NDA_LLADDR]) {
		const char *lladdr;
		SPRINT_BUF(b1);

		lladdr = ll_addr_n2a(RTA_DATA(tb[NDA_LLADDR]),
				     RTA_PAYLOAD(tb[NDA_LLADDR]),
				     ll_index_to_type(r->ndm_ifindex),
				     b1, sizeof(b1));

		print_color_string(PRINT_ANY, COLOR_MAC,
				   "mac", "%s ", lladdr);
	}

	if (!filter_index && r->ndm_ifindex)
		print_color_string(PRINT_ANY, COLOR_IFNAME,
				   "ifname", "dev %s ",
				   ll_index_to_name(r->ndm_ifindex));

	if (tb[NDA_DST]) {
		int family = AF_INET;
		const char *dst;

		if (RTA_PAYLOAD(tb[NDA_DST]) == sizeof(struct in6_addr))
			family = AF_INET6;

		dst = format_host(family,
				  RTA_PAYLOAD(tb[NDA_DST]),
				  RTA_DATA(tb[NDA_DST]));

		print_color_string(PRINT_ANY,
				   ifa_family_color(family),
				    "dst", "dst %s ", dst);
	}

	if (vid)
		print_uint(PRINT_ANY,
				 "vlan", "vlan %hu ", vid);

	if (tb[NDA_PORT])
		print_uint(PRINT_ANY,
				 "port", "port %u ",
				 rta_getattr_be16(tb[NDA_PORT]));

	if (tb[NDA_VNI])
		print_uint(PRINT_ANY,
				 "vni", "vni %u ",
				 rta_getattr_u32(tb[NDA_VNI]));

	if (tb[NDA_SRC_VNI])
		print_uint(PRINT_ANY,
				 "src_vni", "src_vni %u ",
				rta_getattr_u32(tb[NDA_SRC_VNI]));

	if (tb[NDA_IFINDEX]) {
		unsigned int ifindex = rta_getattr_u32(tb[NDA_IFINDEX]);

		if (tb[NDA_LINK_NETNSID])
			print_uint(PRINT_ANY,
					 "viaIfIndex", "via ifindex %u ",
					 ifindex);
		else
			print_string(PRINT_ANY,
					   "viaIf", "via %s ",
					   ll_index_to_name(ifindex));
	}

	if (tb[NDA_LINK_NETNSID])
		print_uint(PRINT_ANY,
				 "linkNetNsId", "link-netnsid %d ",
				 rta_getattr_u32(tb[NDA_LINK_NETNSID]));

	if (show_stats && tb[NDA_CACHEINFO])
		fdb_print_stats(fp, RTA_DATA(tb[NDA_CACHEINFO]));

	fdb_print_flags(fp, r->ndm_flags);


	if (tb[NDA_MASTER])
		print_string(PRINT_ANY, "master", "master %s ",
			     ll_index_to_name(rta_getattr_u32(tb[NDA_MASTER])));

	print_string(PRINT_ANY, "state", "%s\n",
			   state_n2a(r->ndm_state));
	close_json_object();
	fflush(fp);
	return 0;
}

static int fdb_linkdump_filter(struct nlmsghdr *nlh, int reqlen)
{
	int err;

	if (filter_index) {
		struct ifinfomsg *ifm = NLMSG_DATA(nlh);

		ifm->ifi_index = filter_index;
	}

	if (filter_master) {
		err = addattr32(nlh, reqlen, IFLA_MASTER, filter_master);
		if (err)
			return err;
	}

	return 0;
}

static int fdb_dump_filter(struct nlmsghdr *nlh, int reqlen)
{
	int err;

	if (filter_index) {
		struct ndmsg *ndm = NLMSG_DATA(nlh);

		ndm->ndm_ifindex = filter_index;
	}

	if (filter_master) {
		err = addattr32(nlh, reqlen, NDA_MASTER, filter_master);
		if (err)
			return err;
	}

	return 0;
}

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

	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;
		}
		filter_master = br_ifindex;
	}

	/*we'll keep around filter_dev for older kernels */
	if (filter_dev) {
		filter_index = ll_name_to_index(filter_dev);
		if (!filter_index)
			return nodev(filter_dev);
	}

	if (rth.flags & RTNL_HANDLE_F_STRICT_CHK)
		rc = rtnl_neighdump_req(&rth, PF_BRIDGE, fdb_dump_filter);
	else
		rc = rtnl_fdb_linkdump_req_filter_fn(&rth, fdb_linkdump_filter);
	if (rc < 0) {
		perror("Cannot send dump request");
		exit(1);
	}

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

	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 long src_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, "src_vni") == 0) {
			NEXT_ARG();
			src_vni = strtoul(*argv, &endptr, 0);
			if ((endptr && *endptr) ||
			    (src_vni >> 24) || src_vni == ULONG_MAX)
				invarg("invalid src VNI\n", *argv);
		} else if (strcmp(*argv, "via") == 0) {
			NEXT_ARG();
			via = ll_name_to_index(*argv);
			if (!via)
				exit(nodev(*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 (matches(*argv, "extern_learn") == 0) {
			req.ndm.ndm_flags |= NTF_EXT_LEARNED;
		} else if (matches(*argv, "sticky") == 0) {
			req.ndm.ndm_flags |= NTF_STICKY;
		} 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 (src_vni != ~0)
		addattr32(&req.n, sizeof(req), NDA_SRC_VNI, src_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)
		return nodev(d);

	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
6054c1eb	1	/* SPDX-License-Identifier: GPL-2.0 */
d04bc300 SH	2	/*
	3	* Get/set/delete fdb table with netlink
	4	*
0849e60a SH	5	* TODO: merge/replace this with ip neighbour
0849e60a SH	6	*
d04bc300 SH	7	* Authors: Stephen Hemminger <shemminger@vyatta.com>
	8	*/
	9
	10	#include <stdio.h>
	11	#include <stdlib.h>
	12	#include <unistd.h>
5f409678	13	#include <netdb.h>
d04bc300 SH	14	#include <time.h>
	15	#include <fcntl.h>
	16	#include <sys/socket.h>
	17	#include <sys/time.h>
	18	#include <net/if.h>
	19	#include <netinet/in.h>
	20	#include <linux/if_bridge.h>
	21	#include <linux/if_ether.h>
	22	#include <linux/neighbour.h>
	23	#include <string.h>
dd9cc0ee	24	#include <limits.h>
b239c56e	25	#include <stdbool.h>
d04bc300	26
c7c1a1ef	27	#include "json_print.h"
d04bc300 SH	28	#include "libnetlink.h"
d04bc300 SH	29	#include "br_common.h"
0849e60a	30	#include "rt_names.h"
d04bc300 SH	31	#include "utils.h"
d04bc300 SH	32
66b4199f	33	static unsigned int filter_index, filter_vlan, filter_state, filter_master;
d04bc300 SH	34
	35	static void usage(void)
	36	{
bcddcddd SH	37	fprintf(stderr,
bcddcddd SH	38	"Usage: bridge fdb { add \| append \| del \| replace } ADDR dev DEV\n"
b4f84bf8	39	" [ self ] [ master ] [ use ] [ router ] [ extern_learn ]\n"
c3ded6e4 NA	40	" [ sticky ] [ local \| static \| dynamic ] [ dst IPADDR ]\n"
c3ded6e4 NA	41	" [ vlan VID ] [ port PORT] [ vni VNI ] [ via DEV ]\n"
c5b176e5	42	" [ src_vni VNI ]\n"
bcddcddd	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
c7c1a1ef SH	85	static void fdb_print_flags(FILE *fp, unsigned int flags)
	86	{
	87	open_json_array(PRINT_JSON,
	88	is_json_context() ? "flags" : "");
	89
	90	if (flags & NTF_SELF)
	91	print_string(PRINT_ANY, NULL, "%s ", "self");
	92
	93	if (flags & NTF_ROUTER)
	94	print_string(PRINT_ANY, NULL, "%s ", "router");
	95
	96	if (flags & NTF_EXT_LEARNED)
	97	print_string(PRINT_ANY, NULL, "%s ", "extern_learn");
	98
	99	if (flags & NTF_OFFLOADED)
	100	print_string(PRINT_ANY, NULL, "%s ", "offload");
	101
	102	if (flags & NTF_MASTER)
	103	print_string(PRINT_ANY, NULL, "%s ", "master");
	104
c3ded6e4 NA	105	if (flags & NTF_STICKY)
	106	print_string(PRINT_ANY, NULL, "%s ", "sticky");
	107
c7c1a1ef SH	108	close_json_array(PRINT_JSON, NULL);
	109	}
	110
	111	static void fdb_print_stats(FILE fp, const struct nda_cacheinfo ci)
b239c56e	112	{
c7c1a1ef SH	113	static int hz;
	114
	115	if (!hz)
	116	hz = get_user_hz();
	117
	118	if (is_json_context()) {
	119	print_uint(PRINT_JSON, "used", NULL,
	120	ci->ndm_used / hz);
	121	print_uint(PRINT_JSON, "updated", NULL,
	122	ci->ndm_updated / hz);
	123	} else {
	124	fprintf(fp, "used %d/%d ", ci->ndm_used / hz,
	125	ci->ndm_updated / hz);
	126
	127	}
b239c56e AK	128	}
b239c56e AK	129
cd554f2c	130	int print_fdb(struct nlmsghdr n, void arg)
d04bc300	131	{
0849e60a	132	FILE *fp = arg;
d04bc300 SH	133	struct ndmsg *r = NLMSG_DATA(n);
d04bc300 SH	134	int len = n->nlmsg_len;
df4b043f	135	struct rtattr *tb[NDA_MAX+1];
ae6eb907	136	__u16 vid = 0;
0849e60a SH	137
	138	if (n->nlmsg_type != RTM_NEWNEIGH && n->nlmsg_type != RTM_DELNEIGH) {
	139	fprintf(stderr, "Not RTM_NEWNEIGH: %08x %08x %08x\n",
	140	n->nlmsg_len, n->nlmsg_type, n->nlmsg_flags);
0849e60a SH	141	return 0;
0849e60a SH	142	}
d04bc300 SH	143
	144	len -= NLMSG_LENGTH(sizeof(*r));
	145	if (len < 0) {
	146	fprintf(stderr, "BUG: wrong nlmsg len %d\n", len);
	147	return -1;
	148	}
	149
	150	if (r->ndm_family != AF_BRIDGE)
	151	return 0;
	152
	153	if (filter_index && filter_index != r->ndm_ifindex)
	154	return 0;
	155
7f10090b NA	156	if (filter_state && !(r->ndm_state & filter_state))
	157	return 0;
	158
d04bc300 SH	159	parse_rtattr(tb, NDA_MAX, NDA_RTA(r),
	160	n->nlmsg_len - NLMSG_LENGTH(sizeof(*r)));
	161
ae6eb907 NA	162	if (tb[NDA_VLAN])
	163	vid = rta_getattr_u16(tb[NDA_VLAN]);
	164
	165	if (filter_vlan && filter_vlan != vid)
	166	return 0;
	167
c7c1a1ef SH	168	open_json_object(NULL);
	169	if (n->nlmsg_type == RTM_DELNEIGH)
	170	print_bool(PRINT_ANY, "deleted", "Deleted ", true);
0849e60a SH	171
0849e60a SH	172	if (tb[NDA_LLADDR]) {
c7c1a1ef	173	const char *lladdr;
0849e60a	174	SPRINT_BUF(b1);
c7c1a1ef SH	175
	176	lladdr = ll_addr_n2a(RTA_DATA(tb[NDA_LLADDR]),
	177	RTA_PAYLOAD(tb[NDA_LLADDR]),
	178	ll_index_to_type(r->ndm_ifindex),
	179	b1, sizeof(b1));
	180
	181	print_color_string(PRINT_ANY, COLOR_MAC,
	182	"mac", "%s ", lladdr);
d04bc300	183	}
38df7ac9	184
a795211f	185	if (!filter_index && r->ndm_ifindex)
c7c1a1ef	186	print_color_string(PRINT_ANY, COLOR_IFNAME,
4abb8c72	187	"ifname", "dev %s ",
c7c1a1ef	188	ll_index_to_name(r->ndm_ifindex));
0849e60a SH	189
0849e60a SH	190	if (tb[NDA_DST]) {
9e763fa5	191	int family = AF_INET;
c7c1a1ef	192	const char *dst;
9e763fa5 MR	193
	194	if (RTA_PAYLOAD(tb[NDA_DST]) == sizeof(struct in6_addr))
	195	family = AF_INET6;
	196
c7c1a1ef SH	197	dst = format_host(family,
	198	RTA_PAYLOAD(tb[NDA_DST]),
	199	RTA_DATA(tb[NDA_DST]));
b239c56e	200
c7c1a1ef SH	201	print_color_string(PRINT_ANY,
c7c1a1ef SH	202	ifa_family_color(family),
4abb8c72	203	"dst", "dst %s ", dst);
b239c56e AK	204	}
b239c56e AK	205
c7c1a1ef SH	206	if (vid)
	207	print_uint(PRINT_ANY,
	208	"vlan", "vlan %hu ", vid);
38df7ac9	209
c7c1a1ef SH	210	if (tb[NDA_PORT])
	211	print_uint(PRINT_ANY,
	212	"port", "port %u ",
	213	rta_getattr_be16(tb[NDA_PORT]));
fd08839c	214
c7c1a1ef SH	215	if (tb[NDA_VNI])
	216	print_uint(PRINT_ANY,
	217	"vni", "vni %u ",
	218	rta_getattr_u32(tb[NDA_VNI]));
	219
	220	if (tb[NDA_SRC_VNI])
	221	print_uint(PRINT_ANY,
	222	"src_vni", "src_vni %u ",
86d0988b	223	rta_getattr_u32(tb[NDA_SRC_VNI]));
86d0988b	224
5f409678 DS	225	if (tb[NDA_IFINDEX]) {
	226	unsigned int ifindex = rta_getattr_u32(tb[NDA_IFINDEX]);
	227
c7c1a1ef SH	228	if (tb[NDA_LINK_NETNSID])
	229	print_uint(PRINT_ANY,
	230	"viaIfIndex", "via ifindex %u ",
	231	ifindex);
b239c56e	232	else
c7c1a1ef SH	233	print_string(PRINT_ANY,
	234	"viaIf", "via %s ",
	235	ll_index_to_name(ifindex));
b239c56e	236	}
5f409678	237
c7c1a1ef SH	238	if (tb[NDA_LINK_NETNSID])
	239	print_uint(PRINT_ANY,
	240	"linkNetNsId", "link-netnsid %d ",
	241	rta_getattr_u32(tb[NDA_LINK_NETNSID]));
d04bc300	242
c7c1a1ef SH	243	if (show_stats && tb[NDA_CACHEINFO])
c7c1a1ef SH	244	fdb_print_stats(fp, RTA_DATA(tb[NDA_CACHEINFO]));
b239c56e	245
c7c1a1ef	246	fdb_print_flags(fp, r->ndm_flags);
b239c56e	247
b239c56e	248
c7c1a1ef	249	if (tb[NDA_MASTER])
4abb8c72	250	print_string(PRINT_ANY, "master", "master %s ",
c7c1a1ef	251	ll_index_to_name(rta_getattr_u32(tb[NDA_MASTER])));
4d45bf3b	252
c7c1a1ef SH	253	print_string(PRINT_ANY, "state", "%s\n",
	254	state_n2a(r->ndm_state));
	255	close_json_object();
	256	fflush(fp);
d04bc300 SH	257	return 0;
	258	}
	259
05880354 DA	260	static int fdb_linkdump_filter(struct nlmsghdr *nlh, int reqlen)
	261	{
	262	int err;
	263
	264	if (filter_index) {
	265	struct ifinfomsg *ifm = NLMSG_DATA(nlh);
	266
	267	ifm->ifi_index = filter_index;
	268	}
	269
	270	if (filter_master) {
	271	err = addattr32(nlh, reqlen, IFLA_MASTER, filter_master);
	272	if (err)
	273	return err;
	274	}
	275
	276	return 0;
	277	}
	278
66b4199f	279	static int fdb_dump_filter(struct nlmsghdr *nlh, int reqlen)
d04bc300	280	{
66b4199f DA	281	int err;
	282
	283	if (filter_index) {
	284	struct ndmsg *ndm = NLMSG_DATA(nlh);
aeb14eb0	285
66b4199f DA	286	ndm->ndm_ifindex = filter_index;
	287	}
	288
	289	if (filter_master) {
	290	err = addattr32(nlh, reqlen, NDA_MASTER, filter_master);
	291	if (err)
	292	return err;
	293	}
	294
	295	return 0;
	296	}
	297
	298	static int fdb_show(int argc, char **argv)
	299	{
d04bc300	300	char *filter_dev = NULL;
aeb14eb0	301	char *br = NULL;
05880354	302	int rc;
aeb14eb0	303
d04bc300	304	while (argc > 0) {
aeb14eb0	305	if ((strcmp(argv, "brport") == 0) \|\| strcmp(argv, "dev") == 0) {
d04bc300	306	NEXT_ARG();
d04bc300	307	filter_dev = *argv;
aeb14eb0 JHS	308	} else if (strcmp(*argv, "br") == 0) {
	309	NEXT_ARG();
	310	br = *argv;
ae6eb907 NA	311	} else if (strcmp(*argv, "vlan") == 0) {
	312	NEXT_ARG();
	313	if (filter_vlan)
	314	duparg("vlan", *argv);
	315	filter_vlan = atoi(*argv);
7f10090b NA	316	} else if (strcmp(*argv, "state") == 0) {
	317	unsigned int state;
	318
	319	NEXT_ARG();
	320	if (state_a2n(&state, *argv))
	321	invarg("invalid state", *argv);
	322	filter_state \|= state;
aeb14eb0 JHS	323	} else {
	324	if (matches(*argv, "help") == 0)
	325	usage();
d04bc300 SH	326	}
	327	argc--; argv++;
	328	}
	329
aeb14eb0 JHS	330	if (br) {
aeb14eb0 JHS	331	int br_ifindex = ll_name_to_index(br);
df4b043f	332
aeb14eb0 JHS	333	if (br_ifindex == 0) {
	334	fprintf(stderr, "Cannot find bridge device \"%s\"\n", br);
	335	return -1;
	336	}
66b4199f	337	filter_master = br_ifindex;
aeb14eb0 JHS	338	}
	339
	340	/we'll keep around filter_dev for older kernels /
d04bc300	341	if (filter_dev) {
7a14358b	342	filter_index = ll_name_to_index(filter_dev);
fe99adbc SP	343	if (!filter_index)
fe99adbc SP	344	return nodev(filter_dev);
d04bc300 SH	345	}
d04bc300 SH	346
05880354 DA	347	if (rth.flags & RTNL_HANDLE_F_STRICT_CHK)
	348	rc = rtnl_neighdump_req(&rth, PF_BRIDGE, fdb_dump_filter);
	349	else
264be1d8	350	rc = rtnl_fdb_linkdump_req_filter_fn(&rth, fdb_linkdump_filter);
05880354	351	if (rc < 0) {
d04bc300 SH	352	perror("Cannot send dump request");
	353	exit(1);
	354	}
d04bc300	355
c7c1a1ef	356	new_json_obj(json);
0849e60a	357	if (rtnl_dump_filter(&rth, print_fdb, stdout) < 0) {
d04bc300 SH	358	fprintf(stderr, "Dump terminated\n");
	359	exit(1);
	360	}
c7c1a1ef SH	361	delete_json_obj();
c7c1a1ef SH	362	fflush(stdout);
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;
5f409678 DS	386	unsigned long vni = ~0;
c5b176e5	387	unsigned long src_vni = ~0;
5f409678 DS	388	unsigned int via = 0;
5f409678 DS	389	char *endptr;
fd08839c	390	short vid = -1;
d04bc300	391
d04bc300 SH	392	while (argc > 0) {
	393	if (strcmp(*argv, "dev") == 0) {
	394	NEXT_ARG();
	395	d = *argv;
0849e60a SH	396	} else if (strcmp(*argv, "dst") == 0) {
	397	NEXT_ARG();
	398	if (dst_ok)
	399	duparg2("dst", *argv);
	400	get_addr(&dst, *argv, preferred_family);
	401	dst_ok = 1;
5f409678 DS	402	} else if (strcmp(*argv, "port") == 0) {
	403
	404	NEXT_ARG();
	405	port = strtoul(*argv, &endptr, 0);
	406	if (endptr && *endptr) {
	407	struct servent *pse;
	408
	409	pse = getservbyname(*argv, "udp");
	410	if (!pse)
	411	invarg("invalid port\n", *argv);
	412	port = ntohs(pse->s_port);
	413	} else if (port > 0xffff)
	414	invarg("invalid port\n", *argv);
	415	} else if (strcmp(*argv, "vni") == 0) {
	416	NEXT_ARG();
	417	vni = strtoul(*argv, &endptr, 0);
	418	if ((endptr && *endptr) \|\|
	419	(vni >> 24) \|\| vni == ULONG_MAX)
	420	invarg("invalid VNI\n", *argv);
c5b176e5 RP	421	} else if (strcmp(*argv, "src_vni") == 0) {
	422	NEXT_ARG();
	423	src_vni = strtoul(*argv, &endptr, 0);
	424	if ((endptr && *endptr) \|\|
	425	(src_vni >> 24) \|\| src_vni == ULONG_MAX)
	426	invarg("invalid src VNI\n", *argv);
5f409678 DS	427	} else if (strcmp(*argv, "via") == 0) {
5f409678 DS	428	NEXT_ARG();
7a14358b	429	via = ll_name_to_index(*argv);
fe99adbc SP	430	if (!via)
fe99adbc SP	431	exit(nodev(*argv));
dc6a6a25 JF	432	} else if (strcmp(*argv, "self") == 0) {
dc6a6a25 JF	433	req.ndm.ndm_flags \|= NTF_SELF;
0849e60a	434	} else if (matches(*argv, "master") == 0) {
dc6a6a25	435	req.ndm.ndm_flags \|= NTF_MASTER;
5b8a1d4a DS	436	} else if (matches(*argv, "router") == 0) {
5b8a1d4a DS	437	req.ndm.ndm_flags \|= NTF_ROUTER;
e9e9365b	438	} else if (matches(*argv, "local") == 0 \|\|
0849e60a SH	439	matches(*argv, "permanent") == 0) {
0849e60a SH	440	req.ndm.ndm_state \|= NUD_PERMANENT;
a1987cd1 RP	441	} else if (matches(*argv, "temp") == 0 \|\|
a1987cd1 RP	442	matches(*argv, "static") == 0) {
0849e60a	443	req.ndm.ndm_state \|= NUD_REACHABLE;
c6d0cfb5 RP	444	} else if (matches(*argv, "dynamic") == 0) {
	445	req.ndm.ndm_state \|= NUD_REACHABLE;
	446	req.ndm.ndm_state &= ~NUD_NOARP;
fd08839c VY	447	} else if (matches(*argv, "vlan") == 0) {
	448	if (vid >= 0)
	449	duparg2("vlan", *argv);
	450	NEXT_ARG();
	451	vid = atoi(*argv);
cd8df30b RP	452	} else if (matches(*argv, "use") == 0) {
cd8df30b RP	453	req.ndm.ndm_flags \|= NTF_USE;
b4f84bf8 RP	454	} else if (matches(*argv, "extern_learn") == 0) {
b4f84bf8 RP	455	req.ndm.ndm_flags \|= NTF_EXT_LEARNED;
c3ded6e4 NA	456	} else if (matches(*argv, "sticky") == 0) {
c3ded6e4 NA	457	req.ndm.ndm_flags \|= NTF_STICKY;
d04bc300	458	} else {
bcddcddd	459	if (strcmp(*argv, "to") == 0)
d04bc300	460	NEXT_ARG();
bcddcddd	461
0849e60a SH	462	if (matches(*argv, "help") == 0)
0849e60a SH	463	usage();
d04bc300 SH	464	if (addr)
	465	duparg2("to", *argv);
	466	addr = *argv;
	467	}
	468	argc--; argv++;
	469	}
	470
	471	if (d == NULL \|\| addr == NULL) {
	472	fprintf(stderr, "Device and address are required arguments.\n");
42ecedd4	473	return -1;
d04bc300 SH	474	}
d04bc300 SH	475
0849e60a SH	476	/* Assume self */
	477	if (!(req.ndm.ndm_flags&(NTF_SELF\|NTF_MASTER)))
	478	req.ndm.ndm_flags \|= NTF_SELF;
	479
	480	/* Assume permanent */
	481	if (!(req.ndm.ndm_state&(NUD_PERMANENT\|NUD_REACHABLE)))
	482	req.ndm.ndm_state \|= NUD_PERMANENT;
	483
	484	if (sscanf(addr, "%hhx:%hhx:%hhx:%hhx:%hhx:%hhx",
d04bc300 SH	485	abuf, abuf+1, abuf+2,
	486	abuf+3, abuf+4, abuf+5) != 6) {
	487	fprintf(stderr, "Invalid mac address %s\n", addr);
42ecedd4	488	return -1;
d04bc300 SH	489	}
	490
	491	addattr_l(&req.n, sizeof(req), NDA_LLADDR, abuf, ETH_ALEN);
0849e60a SH	492	if (dst_ok)
0849e60a SH	493	addattr_l(&req.n, sizeof(req), NDA_DST, &dst.data, dst.bytelen);
d04bc300	494
fd08839c	495	if (vid >= 0)
8ae66094	496	addattr16(&req.n, sizeof(req), NDA_VLAN, vid);
fd08839c	497
5f409678 DS	498	if (port) {
	499	unsigned short dport;
	500
	501	dport = htons((unsigned short)port);
	502	addattr16(&req.n, sizeof(req), NDA_PORT, dport);
	503	}
	504	if (vni != ~0)
	505	addattr32(&req.n, sizeof(req), NDA_VNI, vni);
c5b176e5 RP	506	if (src_vni != ~0)
c5b176e5 RP	507	addattr32(&req.n, sizeof(req), NDA_SRC_VNI, src_vni);
5f409678 DS	508	if (via)
	509	addattr32(&req.n, sizeof(req), NDA_IFINDEX, via);
	510
d04bc300	511	req.ndm.ndm_ifindex = ll_name_to_index(d);
fe99adbc SP	512	if (!req.ndm.ndm_ifindex)
fe99adbc SP	513	return nodev(d);
d04bc300	514
86bf43c7	515	if (rtnl_talk(&rth, &req.n, NULL) < 0)
42ecedd4	516	return -1;
d04bc300 SH	517
	518	return 0;
	519	}
	520
	521	int do_fdb(int argc, char **argv)
	522	{
	523	ll_init_map(&rth);
	524
	525	if (argc > 0) {
	526	if (matches(*argv, "add") == 0)
	527	return fdb_modify(RTM_NEWNEIGH, NLM_F_CREATE\|NLM_F_EXCL, argc-1, argv+1);
5f409678 DS	528	if (matches(*argv, "append") == 0)
5f409678 DS	529	return fdb_modify(RTM_NEWNEIGH, NLM_F_CREATE\|NLM_F_APPEND, argc-1, argv+1);
5464049b TR	530	if (matches(*argv, "replace") == 0)
5464049b TR	531	return fdb_modify(RTM_NEWNEIGH, NLM_F_CREATE\|NLM_F_REPLACE, argc-1, argv+1);
d04bc300 SH	532	if (matches(*argv, "delete") == 0)
	533	return fdb_modify(RTM_DELNEIGH, 0, argc-1, argv+1);
	534	if (matches(*argv, "show") == 0 \|\|
	535	matches(*argv, "lst") == 0 \|\|
	536	matches(*argv, "list") == 0)
	537	return fdb_show(argc-1, argv+1);
	538	if (matches(*argv, "help") == 0)
	539	usage();
	540	} else
	541	return fdb_show(0, NULL);
	542
083b46bb	543	fprintf(stderr, "Command \"%s\" is unknown, try \"bridge fdb help\".\n", *argv);
d04bc300 SH	544	exit(-1);
d04bc300 SH	545	}