[mirror_iproute2.git] / bridge / mdb.c

/* SPDX-License-Identifier: GPL-2.0 */
/*
 * Get mdb table with netlink
 */

#include <stdio.h>
#include <stdlib.h>
#include <unistd.h>
#include <fcntl.h>
#include <sys/socket.h>
#include <net/if.h>
#include <netinet/in.h>
#include <linux/if_bridge.h>
#include <linux/if_ether.h>
#include <string.h>
#include <arpa/inet.h>

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

#ifndef MDBA_RTA
#define MDBA_RTA(r) \
	((struct rtattr *)(((char *)(r)) + NLMSG_ALIGN(sizeof(struct br_port_msg))))
#endif

static unsigned int filter_index, filter_vlan;

static void usage(void)
{
	fprintf(stderr,
		"Usage: bridge mdb { add | del } dev DEV port PORT grp GROUP [src SOURCE] [permanent | temp] [vid VID]\n"
		"       bridge mdb {show} [ dev DEV ] [ vid VID ]\n");
	exit(-1);
}

static bool is_temp_mcast_rtr(__u8 type)
{
	return type == MDB_RTR_TYPE_TEMP_QUERY || type == MDB_RTR_TYPE_TEMP;
}

static const char *format_timer(__u32 ticks, int align)
{
	struct timeval tv;
	static char tbuf[32];

	__jiffies_to_tv(&tv, ticks);
	if (align)
		snprintf(tbuf, sizeof(tbuf), "%4lu.%.2lu",
			 (unsigned long)tv.tv_sec,
			 (unsigned long)tv.tv_usec / 10000);
	else
		snprintf(tbuf, sizeof(tbuf), "%lu.%.2lu",
			 (unsigned long)tv.tv_sec,
			 (unsigned long)tv.tv_usec / 10000);

	return tbuf;
}

static void __print_router_port_stats(FILE *f, struct rtattr *pattr)
{
	struct rtattr *tb[MDBA_ROUTER_PATTR_MAX + 1];

	parse_rtattr(tb, MDBA_ROUTER_PATTR_MAX, MDB_RTR_RTA(RTA_DATA(pattr)),
		     RTA_PAYLOAD(pattr) - RTA_ALIGN(sizeof(uint32_t)));

	if (tb[MDBA_ROUTER_PATTR_TIMER]) {
		__u32 timer = rta_getattr_u32(tb[MDBA_ROUTER_PATTR_TIMER]);

		print_string(PRINT_ANY, "timer", " %s",
			     format_timer(timer, 1));
	}

	if (tb[MDBA_ROUTER_PATTR_TYPE]) {
		__u8 type = rta_getattr_u8(tb[MDBA_ROUTER_PATTR_TYPE]);

		print_string(PRINT_ANY, "type", " %s",
			     is_temp_mcast_rtr(type) ? "temp" : "permanent");
	}
}

static void br_print_router_ports(FILE *f, struct rtattr *attr,
				  const char *brifname)
{
	int rem = RTA_PAYLOAD(attr);
	struct rtattr *i;

	if (is_json_context())
		open_json_array(PRINT_JSON, brifname);
	else if (!show_stats)
		fprintf(f, "router ports on %s: ", brifname);

	for (i = RTA_DATA(attr); RTA_OK(i, rem); i = RTA_NEXT(i, rem)) {
		uint32_t *port_ifindex = RTA_DATA(i);
		const char *port_ifname = ll_index_to_name(*port_ifindex);

		if (is_json_context()) {
			open_json_object(NULL);
			print_string(PRINT_JSON, "port", NULL, port_ifname);

			if (show_stats)
				__print_router_port_stats(f, i);
			close_json_object();
		} else if (show_stats) {
			fprintf(f, "router ports on %s: %s",
				brifname, port_ifname);

			__print_router_port_stats(f, i);
			fprintf(f, "\n");
		} else {
			fprintf(f, "%s ", port_ifname);
		}
	}

	if (!show_stats)
		print_nl();

	close_json_array(PRINT_JSON, NULL);
}

static void print_src_entry(struct rtattr *src_attr, int af, const char *sep)
{
	struct rtattr *stb[MDBA_MDB_SRCATTR_MAX + 1];
	SPRINT_BUF(abuf);
	const char *addr;
	__u32 timer_val;

	parse_rtattr_nested(stb, MDBA_MDB_SRCATTR_MAX, src_attr);
	if (!stb[MDBA_MDB_SRCATTR_ADDRESS] || !stb[MDBA_MDB_SRCATTR_TIMER])
		return;

	addr = inet_ntop(af, RTA_DATA(stb[MDBA_MDB_SRCATTR_ADDRESS]), abuf,
			 sizeof(abuf));
	if (!addr)
		return;
	timer_val = rta_getattr_u32(stb[MDBA_MDB_SRCATTR_TIMER]);

	open_json_object(NULL);
	print_string(PRINT_FP, NULL, "%s", sep);
	print_color_string(PRINT_ANY, ifa_family_color(af),
			   "address", "%s", addr);
	print_string(PRINT_ANY, "timer", "/%s", format_timer(timer_val, 0));
	close_json_object();
}

static void print_mdb_entry(FILE *f, int ifindex, const struct br_mdb_entry *e,
			    struct nlmsghdr *n, struct rtattr **tb)
{
	const void *grp, *src;
	const char *addr;
	SPRINT_BUF(abuf);
	const char *dev;
	int af;

	if (filter_vlan && e->vid != filter_vlan)
		return;

	if (!e->addr.proto) {
		af = AF_PACKET;
		grp = &e->addr.u.mac_addr;
	} else if (e->addr.proto == htons(ETH_P_IP)) {
		af = AF_INET;
		grp = &e->addr.u.ip4;
	} else {
		af = AF_INET6;
		grp = &e->addr.u.ip6;
	}
	dev = ll_index_to_name(ifindex);

	open_json_object(NULL);

	print_int(PRINT_JSON, "index", NULL, ifindex);
	print_color_string(PRINT_ANY, COLOR_IFNAME, "dev", "dev %s", dev);
	print_string(PRINT_ANY, "port", " port %s",
		     ll_index_to_name(e->ifindex));

	/* The ETH_ALEN argument is ignored for all cases but AF_PACKET */
	addr = rt_addr_n2a_r(af, ETH_ALEN, grp, abuf, sizeof(abuf));
	if (!addr)
		return;

	print_color_string(PRINT_ANY, ifa_family_color(af),
			    "grp", " grp %s", addr);

	if (tb && tb[MDBA_MDB_EATTR_SOURCE]) {
		src = (const void *)RTA_DATA(tb[MDBA_MDB_EATTR_SOURCE]);
		print_color_string(PRINT_ANY, ifa_family_color(af),
				   "src", " src %s",
				   inet_ntop(af, src, abuf, sizeof(abuf)));
	}
	print_string(PRINT_ANY, "state", " %s",
			   (e->state & MDB_PERMANENT) ? "permanent" : "temp");
	if (show_details && tb) {
		if (tb[MDBA_MDB_EATTR_GROUP_MODE]) {
			__u8 mode = rta_getattr_u8(tb[MDBA_MDB_EATTR_GROUP_MODE]);

			print_string(PRINT_ANY, "filter_mode", " filter_mode %s",
				     mode == MCAST_INCLUDE ? "include" :
							     "exclude");
		}
		if (tb[MDBA_MDB_EATTR_SRC_LIST]) {
			struct rtattr *i, *attr = tb[MDBA_MDB_EATTR_SRC_LIST];
			const char *sep = " ";
			int rem;

			open_json_array(PRINT_ANY, is_json_context() ?
								"source_list" :
								" source_list");
			rem = RTA_PAYLOAD(attr);
			for (i = RTA_DATA(attr); RTA_OK(i, rem);
			     i = RTA_NEXT(i, rem)) {
				print_src_entry(i, af, sep);
				sep = ",";
			}
			close_json_array(PRINT_JSON, NULL);
		}
		if (tb[MDBA_MDB_EATTR_RTPROT]) {
			__u8 rtprot = rta_getattr_u8(tb[MDBA_MDB_EATTR_RTPROT]);
			SPRINT_BUF(rtb);

			print_string(PRINT_ANY, "protocol", " proto %s ",
				     rtnl_rtprot_n2a(rtprot, rtb, sizeof(rtb)));
		}
	}

	open_json_array(PRINT_JSON, "flags");
	if (e->flags & MDB_FLAGS_OFFLOAD)
		print_string(PRINT_ANY, NULL, " %s", "offload");
	if (e->flags & MDB_FLAGS_FAST_LEAVE)
		print_string(PRINT_ANY, NULL, " %s", "fast_leave");
	if (e->flags & MDB_FLAGS_STAR_EXCL)
		print_string(PRINT_ANY, NULL, " %s", "added_by_star_ex");
	if (e->flags & MDB_FLAGS_BLOCKED)
		print_string(PRINT_ANY, NULL, " %s", "blocked");
	close_json_array(PRINT_JSON, NULL);

	if (e->vid)
		print_uint(PRINT_ANY, "vid", " vid %u", e->vid);

	if (show_stats && tb && tb[MDBA_MDB_EATTR_TIMER]) {
		__u32 timer = rta_getattr_u32(tb[MDBA_MDB_EATTR_TIMER]);

		print_string(PRINT_ANY, "timer", " %s",
			     format_timer(timer, 1));
	}

	print_nl();
	close_json_object();
}

static void br_print_mdb_entry(FILE *f, int ifindex, struct rtattr *attr,
			       struct nlmsghdr *n)
{
	struct rtattr *etb[MDBA_MDB_EATTR_MAX + 1];
	struct br_mdb_entry *e;
	struct rtattr *i;
	int rem;

	rem = RTA_PAYLOAD(attr);
	for (i = RTA_DATA(attr); RTA_OK(i, rem); i = RTA_NEXT(i, rem)) {
		e = RTA_DATA(i);
		parse_rtattr_flags(etb, MDBA_MDB_EATTR_MAX, MDB_RTA(RTA_DATA(i)),
				   RTA_PAYLOAD(i) - RTA_ALIGN(sizeof(*e)),
				   NLA_F_NESTED);
		print_mdb_entry(f, ifindex, e, n, etb);
	}
}

static void print_mdb_entries(FILE *fp, struct nlmsghdr *n,
			      int ifindex,  struct rtattr *mdb)
{
	int rem = RTA_PAYLOAD(mdb);
	struct rtattr *i;

	for (i = RTA_DATA(mdb); RTA_OK(i, rem); i = RTA_NEXT(i, rem))
		br_print_mdb_entry(fp, ifindex, i, n);
}

static void print_router_entries(FILE *fp, struct nlmsghdr *n,
				 int ifindex, struct rtattr *router)
{
	const char *brifname = ll_index_to_name(ifindex);

	if (n->nlmsg_type == RTM_GETMDB) {
		if (show_details)
			br_print_router_ports(fp, router, brifname);
	} else {
		struct rtattr *i = RTA_DATA(router);
		uint32_t *port_ifindex = RTA_DATA(i);
		const char *port_name = ll_index_to_name(*port_ifindex);

		if (is_json_context()) {
			open_json_array(PRINT_JSON, brifname);
			open_json_object(NULL);

			print_string(PRINT_JSON, "port", NULL,
				     port_name);
			close_json_object();
			close_json_array(PRINT_JSON, NULL);
		} else {
			fprintf(fp, "router port dev %s master %s\n",
				port_name, brifname);
		}
	}
}

static int __parse_mdb_nlmsg(struct nlmsghdr *n, struct rtattr **tb)
{
	struct br_port_msg *r = NLMSG_DATA(n);
	int len = n->nlmsg_len;

	if (n->nlmsg_type != RTM_GETMDB &&
	    n->nlmsg_type != RTM_NEWMDB &&
	    n->nlmsg_type != RTM_DELMDB) {
		fprintf(stderr,
			"Not RTM_GETMDB, RTM_NEWMDB or RTM_DELMDB: %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 (filter_index && filter_index != r->ifindex)
		return 0;

	parse_rtattr(tb, MDBA_MAX, MDBA_RTA(r), n->nlmsg_len - NLMSG_LENGTH(sizeof(*r)));

	return 1;
}

static int print_mdbs(struct nlmsghdr *n, void *arg)
{
	struct br_port_msg *r = NLMSG_DATA(n);
	struct rtattr *tb[MDBA_MAX+1];
	FILE *fp = arg;
	int ret;

	ret = __parse_mdb_nlmsg(n, tb);
	if (ret != 1)
		return ret;

	if (tb[MDBA_MDB])
		print_mdb_entries(fp, n, r->ifindex, tb[MDBA_MDB]);

	return 0;
}

static int print_rtrs(struct nlmsghdr *n, void *arg)
{
	struct br_port_msg *r = NLMSG_DATA(n);
	struct rtattr *tb[MDBA_MAX+1];
	FILE *fp = arg;
	int ret;

	ret = __parse_mdb_nlmsg(n, tb);
	if (ret != 1)
		return ret;

	if (tb[MDBA_ROUTER])
		print_router_entries(fp, n, r->ifindex, tb[MDBA_ROUTER]);

	return 0;
}

int print_mdb_mon(struct nlmsghdr *n, void *arg)
{
	struct br_port_msg *r = NLMSG_DATA(n);
	struct rtattr *tb[MDBA_MAX+1];
	FILE *fp = arg;
	int ret;

	ret = __parse_mdb_nlmsg(n, tb);
	if (ret != 1)
		return ret;

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

	if (tb[MDBA_MDB])
		print_mdb_entries(fp, n, r->ifindex, tb[MDBA_MDB]);

	if (tb[MDBA_ROUTER])
		print_router_entries(fp, n, r->ifindex, tb[MDBA_ROUTER]);

	return 0;
}

static int mdb_show(int argc, char **argv)
{
	char *filter_dev = NULL;

	while (argc > 0) {
		if (strcmp(*argv, "dev") == 0) {
			NEXT_ARG();
			if (filter_dev)
				duparg("dev", *argv);
			filter_dev = *argv;
		} else if (strcmp(*argv, "vid") == 0) {
			NEXT_ARG();
			if (filter_vlan)
				duparg("vid", *argv);
			filter_vlan = atoi(*argv);
		}
		argc--; argv++;
	}

	if (filter_dev) {
		filter_index = ll_name_to_index(filter_dev);
		if (!filter_index)
			return nodev(filter_dev);
	}

	new_json_obj(json);
	open_json_object(NULL);

	/* get mdb entries */
	if (rtnl_mdbdump_req(&rth, PF_BRIDGE) < 0) {
		perror("Cannot send dump request");
		return -1;
	}

	open_json_array(PRINT_JSON, "mdb");
	if (rtnl_dump_filter(&rth, print_mdbs, stdout) < 0) {
		fprintf(stderr, "Dump terminated\n");
		return -1;
	}
	close_json_array(PRINT_JSON, NULL);

	/* get router ports */
	if (rtnl_mdbdump_req(&rth, PF_BRIDGE) < 0) {
		perror("Cannot send dump request");
		return -1;
	}

	open_json_object("router");
	if (rtnl_dump_filter(&rth, print_rtrs, stdout) < 0) {
		fprintf(stderr, "Dump terminated\n");
		return -1;
	}
	close_json_object();

	close_json_object();
	delete_json_obj();
	fflush(stdout);

	return 0;
}

static int mdb_parse_grp(const char *grp, struct br_mdb_entry *e)
{
	if (inet_pton(AF_INET, grp, &e->addr.u.ip4)) {
		e->addr.proto = htons(ETH_P_IP);
		return 0;
	}
	if (inet_pton(AF_INET6, grp, &e->addr.u.ip6)) {
		e->addr.proto = htons(ETH_P_IPV6);
		return 0;
	}
	if (ll_addr_a2n((char *)e->addr.u.mac_addr, sizeof(e->addr.u.mac_addr),
			grp) == ETH_ALEN) {
		e->addr.proto = 0;
		return 0;
	}

	return -1;
}

static int mdb_modify(int cmd, int flags, int argc, char **argv)
{
	struct {
		struct nlmsghdr	n;
		struct br_port_msg	bpm;
		char			buf[1024];
	} req = {
		.n.nlmsg_len = NLMSG_LENGTH(sizeof(struct br_port_msg)),
		.n.nlmsg_flags = NLM_F_REQUEST | flags,
		.n.nlmsg_type = cmd,
		.bpm.family = PF_BRIDGE,
	};
	char *d = NULL, *p = NULL, *grp = NULL, *src = NULL;
	struct br_mdb_entry entry = {};
	short vid = 0;

	while (argc > 0) {
		if (strcmp(*argv, "dev") == 0) {
			NEXT_ARG();
			d = *argv;
		} else if (strcmp(*argv, "grp") == 0) {
			NEXT_ARG();
			grp = *argv;
		} else if (strcmp(*argv, "port") == 0) {
			NEXT_ARG();
			p = *argv;
		} else if (strcmp(*argv, "permanent") == 0) {
			if (cmd == RTM_NEWMDB)
				entry.state |= MDB_PERMANENT;
		} else if (strcmp(*argv, "temp") == 0) {
			;/* nothing */
		} else if (strcmp(*argv, "vid") == 0) {
			NEXT_ARG();
			vid = atoi(*argv);
		} else if (strcmp(*argv, "src") == 0) {
			NEXT_ARG();
			src = *argv;
		} else {
			if (matches(*argv, "help") == 0)
				usage();
		}
		argc--; argv++;
	}

	if (d == NULL || grp == NULL || p == NULL) {
		fprintf(stderr, "Device, group address and port name are required arguments.\n");
		return -1;
	}

	req.bpm.ifindex = ll_name_to_index(d);
	if (!req.bpm.ifindex)
		return nodev(d);

	entry.ifindex = ll_name_to_index(p);
	if (!entry.ifindex)
		return nodev(p);

	if (mdb_parse_grp(grp, &entry)) {
		fprintf(stderr, "Invalid address \"%s\"\n", grp);
		return -1;
	}

	entry.vid = vid;
	addattr_l(&req.n, sizeof(req), MDBA_SET_ENTRY, &entry, sizeof(entry));
	if (src) {
		struct rtattr *nest = addattr_nest(&req.n, sizeof(req),
						   MDBA_SET_ENTRY_ATTRS);
		struct in6_addr src_ip6;
		__be32 src_ip4;

		nest->rta_type |= NLA_F_NESTED;
		if (!inet_pton(AF_INET, src, &src_ip4)) {
			if (!inet_pton(AF_INET6, src, &src_ip6)) {
				fprintf(stderr, "Invalid source address \"%s\"\n", src);
				return -1;
			}
			addattr_l(&req.n, sizeof(req), MDBE_ATTR_SOURCE, &src_ip6, sizeof(src_ip6));
		} else {
			addattr32(&req.n, sizeof(req), MDBE_ATTR_SOURCE, src_ip4);
		}
		addattr_nest_end(&req.n, nest);
	}

	if (rtnl_talk(&rth, &req.n, NULL) < 0)
		return -1;

	return 0;
}

int do_mdb(int argc, char **argv)
{
	ll_init_map(&rth);

	if (argc > 0) {
		if (matches(*argv, "add") == 0)
			return mdb_modify(RTM_NEWMDB, NLM_F_CREATE|NLM_F_EXCL, argc-1, argv+1);
		if (matches(*argv, "delete") == 0)
			return mdb_modify(RTM_DELMDB, 0, argc-1, argv+1);

		if (matches(*argv, "show") == 0 ||
		    matches(*argv, "lst") == 0 ||
		    matches(*argv, "list") == 0)
			return mdb_show(argc-1, argv+1);
		if (matches(*argv, "help") == 0)
			usage();
	} else
		return mdb_show(0, NULL);

	fprintf(stderr, "Command \"%s\" is unknown, try \"bridge mdb help\".\n", *argv);
	exit(-1);
}
Commit	Line	Data
6054c1eb	1	/* SPDX-License-Identifier: GPL-2.0 */
e06c7f7e CW	2	/*
	3	* Get mdb table with netlink
	4	*/
	5
	6	#include <stdio.h>
	7	#include <stdlib.h>
	8	#include <unistd.h>
	9	#include <fcntl.h>
	10	#include <sys/socket.h>
	11	#include <net/if.h>
	12	#include <netinet/in.h>
	13	#include <linux/if_bridge.h>
	14	#include <linux/if_ether.h>
	15	#include <string.h>
	16	#include <arpa/inet.h>
	17
	18	#include "libnetlink.h"
	19	#include "br_common.h"
	20	#include "rt_names.h"
	21	#include "utils.h"
c7c1a1ef	22	#include "json_print.h"
e06c7f7e CW	23
	24	#ifndef MDBA_RTA
	25	#define MDBA_RTA(r) \
df4b043f	26	((struct rtattr )(((char )(r)) + NLMSG_ALIGN(sizeof(struct br_port_msg))))
e06c7f7e CW	27	#endif
e06c7f7e CW	28
24687d67	29	static unsigned int filter_index, filter_vlan;
e06c7f7e CW	30
	31	static void usage(void)
	32	{
8589eb4e	33	fprintf(stderr,
547b3197	34	"Usage: bridge mdb { add \| del } dev DEV port PORT grp GROUP [src SOURCE] [permanent \| temp] [vid VID]\n"
8589eb4e	35	" bridge mdb {show} [ dev DEV ] [ vid VID ]\n");
e06c7f7e CW	36	exit(-1);
	37	}
	38
ba037267 NA	39	static bool is_temp_mcast_rtr(__u8 type)
	40	{
	41	return type == MDB_RTR_TYPE_TEMP_QUERY \|\| type == MDB_RTR_TYPE_TEMP;
	42	}
	43
2de81d1e	44	static const char *format_timer(__u32 ticks, int align)
c7c1a1ef SH	45	{
	46	struct timeval tv;
	47	static char tbuf[32];
	48
	49	__jiffies_to_tv(&tv, ticks);
2de81d1e NA	50	if (align)
	51	snprintf(tbuf, sizeof(tbuf), "%4lu.%.2lu",
	52	(unsigned long)tv.tv_sec,
	53	(unsigned long)tv.tv_usec / 10000);
	54	else
	55	snprintf(tbuf, sizeof(tbuf), "%lu.%.2lu",
	56	(unsigned long)tv.tv_sec,
	57	(unsigned long)tv.tv_usec / 10000);
c7c1a1ef SH	58
	59	return tbuf;
	60	}
	61
ba037267 NA	62	static void __print_router_port_stats(FILE f, struct rtattr pattr)
	63	{
	64	struct rtattr *tb[MDBA_ROUTER_PATTR_MAX + 1];
ba037267 NA	65
	66	parse_rtattr(tb, MDBA_ROUTER_PATTR_MAX, MDB_RTR_RTA(RTA_DATA(pattr)),
	67	RTA_PAYLOAD(pattr) - RTA_ALIGN(sizeof(uint32_t)));
c7c1a1ef	68
ba037267	69	if (tb[MDBA_ROUTER_PATTR_TIMER]) {
c7c1a1ef SH	70	__u32 timer = rta_getattr_u32(tb[MDBA_ROUTER_PATTR_TIMER]);
	71
	72	print_string(PRINT_ANY, "timer", " %s",
2de81d1e	73	format_timer(timer, 1));
ba037267	74	}
c7c1a1ef	75
ba037267	76	if (tb[MDBA_ROUTER_PATTR_TYPE]) {
c7c1a1ef SH	77	__u8 type = rta_getattr_u8(tb[MDBA_ROUTER_PATTR_TYPE]);
	78
	79	print_string(PRINT_ANY, "type", " %s",
	80	is_temp_mcast_rtr(type) ? "temp" : "permanent");
ba037267 NA	81	}
	82	}
	83
c7c1a1ef SH	84	static void br_print_router_ports(FILE f, struct rtattr attr,
c7c1a1ef SH	85	const char *brifname)
e06c7f7e	86	{
c7c1a1ef	87	int rem = RTA_PAYLOAD(attr);
e06c7f7e	88	struct rtattr *i;
e06c7f7e	89
c7c1a1ef SH	90	if (is_json_context())
	91	open_json_array(PRINT_JSON, brifname);
	92	else if (!show_stats)
	93	fprintf(f, "router ports on %s: ", brifname);
	94
	95	for (i = RTA_DATA(attr); RTA_OK(i, rem); i = RTA_NEXT(i, rem)) {
	96	uint32_t *port_ifindex = RTA_DATA(i);
	97	const char port_ifname = ll_index_to_name(port_ifindex);
	98
	99	if (is_json_context()) {
	100	open_json_object(NULL);
	101	print_string(PRINT_JSON, "port", NULL, port_ifname);
	102
44e0f6f3 NG	103	if (show_stats)
44e0f6f3 NG	104	__print_router_port_stats(f, i);
c7c1a1ef SH	105	close_json_object();
	106	} else if (show_stats) {
	107	fprintf(f, "router ports on %s: %s",
	108	brifname, port_ifname);
	109
	110	__print_router_port_stats(f, i);
44e0f6f3	111	fprintf(f, "\n");
c7c1a1ef SH	112	} else {
	113	fprintf(f, "%s ", port_ifname);
	114	}
e06c7f7e	115	}
92bba4ed HL	116
	117	if (!show_stats)
	118	print_nl();
	119
c7c1a1ef	120	close_json_array(PRINT_JSON, NULL);
44e0f6f3 NG	121	}
44e0f6f3 NG	122
2de81d1e NA	123	static void print_src_entry(struct rtattr src_attr, int af, const char sep)
	124	{
	125	struct rtattr *stb[MDBA_MDB_SRCATTR_MAX + 1];
	126	SPRINT_BUF(abuf);
	127	const char *addr;
	128	__u32 timer_val;
	129
	130	parse_rtattr_nested(stb, MDBA_MDB_SRCATTR_MAX, src_attr);
	131	if (!stb[MDBA_MDB_SRCATTR_ADDRESS] \|\| !stb[MDBA_MDB_SRCATTR_TIMER])
	132	return;
	133
	134	addr = inet_ntop(af, RTA_DATA(stb[MDBA_MDB_SRCATTR_ADDRESS]), abuf,
	135	sizeof(abuf));
	136	if (!addr)
	137	return;
	138	timer_val = rta_getattr_u32(stb[MDBA_MDB_SRCATTR_TIMER]);
	139
	140	open_json_object(NULL);
	141	print_string(PRINT_FP, NULL, "%s", sep);
	142	print_color_string(PRINT_ANY, ifa_family_color(af),
	143	"address", "%s", addr);
	144	print_string(PRINT_ANY, "timer", "/%s", format_timer(timer_val, 0));
	145	close_json_object();
	146	}
	147
c7c1a1ef	148	static void print_mdb_entry(FILE f, int ifindex, const struct br_mdb_entry e,
05d4f64d	149	struct nlmsghdr n, struct rtattr *tb)
e06c7f7e	150	{
547b3197	151	const void grp, src;
c29f65db	152	const char *addr;
e06c7f7e	153	SPRINT_BUF(abuf);
c7c1a1ef	154	const char *dev;
6aac8617 NA	155	int af;
6aac8617 NA	156
24687d67 NA	157	if (filter_vlan && e->vid != filter_vlan)
24687d67 NA	158	return;
c7c1a1ef	159
c29f65db VO	160	if (!e->addr.proto) {
	161	af = AF_PACKET;
	162	grp = &e->addr.u.mac_addr;
	163	} else if (e->addr.proto == htons(ETH_P_IP)) {
	164	af = AF_INET;
	165	grp = &e->addr.u.ip4;
	166	} else {
	167	af = AF_INET6;
	168	grp = &e->addr.u.ip6;
	169	}
c7c1a1ef SH	170	dev = ll_index_to_name(ifindex);
	171
	172	open_json_object(NULL);
	173
a9661b8b NA	174	print_int(PRINT_JSON, "index", NULL, ifindex);
	175	print_color_string(PRINT_ANY, COLOR_IFNAME, "dev", "dev %s", dev);
	176	print_string(PRINT_ANY, "port", " port %s",
c7c1a1ef	177	ll_index_to_name(e->ifindex));
44e0f6f3	178
c29f65db VO	179	/* The ETH_ALEN argument is ignored for all cases but AF_PACKET */
	180	addr = rt_addr_n2a_r(af, ETH_ALEN, grp, abuf, sizeof(abuf));
	181	if (!addr)
	182	return;
	183
c7c1a1ef	184	print_color_string(PRINT_ANY, ifa_family_color(af),
c29f65db VO	185	"grp", " grp %s", addr);
c29f65db VO	186
547b3197 NA	187	if (tb && tb[MDBA_MDB_EATTR_SOURCE]) {
	188	src = (const void *)RTA_DATA(tb[MDBA_MDB_EATTR_SOURCE]);
	189	print_color_string(PRINT_ANY, ifa_family_color(af),
	190	"src", " src %s",
	191	inet_ntop(af, src, abuf, sizeof(abuf)));
	192	}
a9661b8b	193	print_string(PRINT_ANY, "state", " %s",
c7c1a1ef	194	(e->state & MDB_PERMANENT) ? "permanent" : "temp");
2de81d1e NA	195	if (show_details && tb) {
	196	if (tb[MDBA_MDB_EATTR_GROUP_MODE]) {
	197	__u8 mode = rta_getattr_u8(tb[MDBA_MDB_EATTR_GROUP_MODE]);
c7c1a1ef	198
2de81d1e NA	199	print_string(PRINT_ANY, "filter_mode", " filter_mode %s",
	200	mode == MCAST_INCLUDE ? "include" :
	201	"exclude");
	202	}
	203	if (tb[MDBA_MDB_EATTR_SRC_LIST]) {
	204	struct rtattr i, attr = tb[MDBA_MDB_EATTR_SRC_LIST];
	205	const char *sep = " ";
	206	int rem;
	207
	208	open_json_array(PRINT_ANY, is_json_context() ?
	209	"source_list" :
	210	" source_list");
	211	rem = RTA_PAYLOAD(attr);
	212	for (i = RTA_DATA(attr); RTA_OK(i, rem);
	213	i = RTA_NEXT(i, rem)) {
	214	print_src_entry(i, af, sep);
	215	sep = ",";
	216	}
	217	close_json_array(PRINT_JSON, NULL);
	218	}
86588450 NA	219	if (tb[MDBA_MDB_EATTR_RTPROT]) {
	220	__u8 rtprot = rta_getattr_u8(tb[MDBA_MDB_EATTR_RTPROT]);
	221	SPRINT_BUF(rtb);
	222
	223	print_string(PRINT_ANY, "protocol", " proto %s ",
	224	rtnl_rtprot_n2a(rtprot, rtb, sizeof(rtb)));
	225	}
1d28c480 NA	226	}
1d28c480 NA	227
c7c1a1ef SH	228	open_json_array(PRINT_JSON, "flags");
c7c1a1ef SH	229	if (e->flags & MDB_FLAGS_OFFLOAD)
a9661b8b	230	print_string(PRINT_ANY, NULL, " %s", "offload");
f94e8b07 NA	231	if (e->flags & MDB_FLAGS_FAST_LEAVE)
f94e8b07 NA	232	print_string(PRINT_ANY, NULL, " %s", "fast_leave");
e331677e NA	233	if (e->flags & MDB_FLAGS_STAR_EXCL)
	234	print_string(PRINT_ANY, NULL, " %s", "added_by_star_ex");
	235	if (e->flags & MDB_FLAGS_BLOCKED)
	236	print_string(PRINT_ANY, NULL, " %s", "blocked");
c7c1a1ef SH	237	close_json_array(PRINT_JSON, NULL);
	238
	239	if (e->vid)
	240	print_uint(PRINT_ANY, "vid", " vid %u", e->vid);
	241
	242	if (show_stats && tb && tb[MDBA_MDB_EATTR_TIMER]) {
	243	__u32 timer = rta_getattr_u32(tb[MDBA_MDB_EATTR_TIMER]);
	244
	245	print_string(PRINT_ANY, "timer", " %s",
2de81d1e	246	format_timer(timer, 1));
05d4f64d	247	}
92bba4ed HL	248
92bba4ed HL	249	print_nl();
c7c1a1ef	250	close_json_object();
e06c7f7e CW	251	}
e06c7f7e CW	252
90d73159 NA	253	static void br_print_mdb_entry(FILE f, int ifindex, struct rtattr attr,
90d73159 NA	254	struct nlmsghdr *n)
e06c7f7e	255	{
05d4f64d NA	256	struct rtattr *etb[MDBA_MDB_EATTR_MAX + 1];
05d4f64d NA	257	struct br_mdb_entry *e;
e06c7f7e CW	258	struct rtattr *i;
e06c7f7e CW	259	int rem;
e06c7f7e CW	260
	261	rem = RTA_PAYLOAD(attr);
	262	for (i = RTA_DATA(attr); RTA_OK(i, rem); i = RTA_NEXT(i, rem)) {
	263	e = RTA_DATA(i);
2de81d1e NA	264	parse_rtattr_flags(etb, MDBA_MDB_EATTR_MAX, MDB_RTA(RTA_DATA(i)),
	265	RTA_PAYLOAD(i) - RTA_ALIGN(sizeof(*e)),
	266	NLA_F_NESTED);
05d4f64d	267	print_mdb_entry(f, ifindex, e, n, etb);
e06c7f7e CW	268	}
	269	}
	270
c7c1a1ef SH	271	static void print_mdb_entries(FILE fp, struct nlmsghdr n,
	272	int ifindex, struct rtattr *mdb)
	273	{
	274	int rem = RTA_PAYLOAD(mdb);
	275	struct rtattr *i;
	276
c7c1a1ef SH	277	for (i = RTA_DATA(mdb); RTA_OK(i, rem); i = RTA_NEXT(i, rem))
c7c1a1ef SH	278	br_print_mdb_entry(fp, ifindex, i, n);
c7c1a1ef SH	279	}
	280
	281	static void print_router_entries(FILE fp, struct nlmsghdr n,
	282	int ifindex, struct rtattr *router)
	283	{
	284	const char *brifname = ll_index_to_name(ifindex);
	285
c7c1a1ef SH	286	if (n->nlmsg_type == RTM_GETMDB) {
	287	if (show_details)
	288	br_print_router_ports(fp, router, brifname);
	289	} else {
	290	struct rtattr *i = RTA_DATA(router);
	291	uint32_t *port_ifindex = RTA_DATA(i);
f5fc7387	292	const char port_name = ll_index_to_name(port_ifindex);
c7c1a1ef SH	293
	294	if (is_json_context()) {
	295	open_json_array(PRINT_JSON, brifname);
	296	open_json_object(NULL);
	297
	298	print_string(PRINT_JSON, "port", NULL,
f5fc7387	299	port_name);
c7c1a1ef SH	300	close_json_object();
	301	close_json_array(PRINT_JSON, NULL);
	302	} else {
	303	fprintf(fp, "router port dev %s master %s\n",
f5fc7387	304	port_name, brifname);
c7c1a1ef SH	305	}
c7c1a1ef SH	306	}
c7c1a1ef SH	307	}
c7c1a1ef SH	308
b11b495e	309	static int __parse_mdb_nlmsg(struct nlmsghdr n, struct rtattr *tb)
e06c7f7e	310	{
e06c7f7e CW	311	struct br_port_msg *r = NLMSG_DATA(n);
e06c7f7e CW	312	int len = n->nlmsg_len;
e06c7f7e	313
c7c1a1ef SH	314	if (n->nlmsg_type != RTM_GETMDB &&
	315	n->nlmsg_type != RTM_NEWMDB &&
	316	n->nlmsg_type != RTM_DELMDB) {
	317	fprintf(stderr,
	318	"Not RTM_GETMDB, RTM_NEWMDB or RTM_DELMDB: %08x %08x %08x\n",
e06c7f7e CW	319	n->nlmsg_len, n->nlmsg_type, n->nlmsg_flags);
	320
	321	return 0;
	322	}
	323
	324	len -= NLMSG_LENGTH(sizeof(*r));
	325	if (len < 0) {
	326	fprintf(stderr, "BUG: wrong nlmsg len %d\n", len);
	327	return -1;
	328	}
	329
	330	if (filter_index && filter_index != r->ifindex)
	331	return 0;
	332
	333	parse_rtattr(tb, MDBA_MAX, MDBA_RTA(r), n->nlmsg_len - NLMSG_LENGTH(sizeof(*r)));
	334
b11b495e NA	335	return 1;
	336	}
	337
	338	static int print_mdbs(struct nlmsghdr n, void arg)
	339	{
	340	struct br_port_msg *r = NLMSG_DATA(n);
	341	struct rtattr *tb[MDBA_MAX+1];
	342	FILE *fp = arg;
	343	int ret;
	344
	345	ret = __parse_mdb_nlmsg(n, tb);
	346	if (ret != 1)
	347	return ret;
	348
	349	if (tb[MDBA_MDB])
	350	print_mdb_entries(fp, n, r->ifindex, tb[MDBA_MDB]);
	351
	352	return 0;
	353	}
	354
	355	static int print_rtrs(struct nlmsghdr n, void arg)
	356	{
	357	struct br_port_msg *r = NLMSG_DATA(n);
	358	struct rtattr *tb[MDBA_MAX+1];
	359	FILE *fp = arg;
	360	int ret;
	361
	362	ret = __parse_mdb_nlmsg(n, tb);
	363	if (ret != 1)
	364	return ret;
	365
	366	if (tb[MDBA_ROUTER])
	367	print_router_entries(fp, n, r->ifindex, tb[MDBA_ROUTER]);
	368
	369	return 0;
	370	}
	371
	372	int print_mdb_mon(struct nlmsghdr n, void arg)
	373	{
	374	struct br_port_msg *r = NLMSG_DATA(n);
	375	struct rtattr *tb[MDBA_MAX+1];
	376	FILE *fp = arg;
	377	int ret;
	378
	379	ret = __parse_mdb_nlmsg(n, tb);
	380	if (ret != 1)
	381	return ret;
	382
c7c1a1ef SH	383	if (n->nlmsg_type == RTM_DELMDB)
c7c1a1ef SH	384	print_bool(PRINT_ANY, "deleted", "Deleted ", true);
e06c7f7e	385
c7c1a1ef SH	386	if (tb[MDBA_MDB])
c7c1a1ef SH	387	print_mdb_entries(fp, n, r->ifindex, tb[MDBA_MDB]);
e06c7f7e	388
c7c1a1ef SH	389	if (tb[MDBA_ROUTER])
c7c1a1ef SH	390	print_router_entries(fp, n, r->ifindex, tb[MDBA_ROUTER]);
4d45bf3b	391
e06c7f7e CW	392	return 0;
	393	}
	394
	395	static int mdb_show(int argc, char **argv)
	396	{
	397	char *filter_dev = NULL;
	398
	399	while (argc > 0) {
	400	if (strcmp(*argv, "dev") == 0) {
	401	NEXT_ARG();
	402	if (filter_dev)
	403	duparg("dev", *argv);
	404	filter_dev = *argv;
24687d67 NA	405	} else if (strcmp(*argv, "vid") == 0) {
	406	NEXT_ARG();
	407	if (filter_vlan)
	408	duparg("vid", *argv);
	409	filter_vlan = atoi(*argv);
e06c7f7e CW	410	}
	411	argc--; argv++;
	412	}
	413
	414	if (filter_dev) {
7a14358b	415	filter_index = ll_name_to_index(filter_dev);
fe99adbc SP	416	if (!filter_index)
fe99adbc SP	417	return nodev(filter_dev);
e06c7f7e CW	418	}
e06c7f7e CW	419
c7c1a1ef	420	new_json_obj(json);
b11b495e	421	open_json_object(NULL);
c7c1a1ef	422
b11b495e	423	/* get mdb entries */
9dbe6df4	424	if (rtnl_mdbdump_req(&rth, PF_BRIDGE) < 0) {
44e0f6f3 NG	425	perror("Cannot send dump request");
	426	return -1;
	427	}
	428
b11b495e NA	429	open_json_array(PRINT_JSON, "mdb");
b11b495e NA	430	if (rtnl_dump_filter(&rth, print_mdbs, stdout) < 0) {
44e0f6f3 NG	431	fprintf(stderr, "Dump terminated\n");
	432	return -1;
	433	}
b11b495e NA	434	close_json_array(PRINT_JSON, NULL);
	435
	436	/* get router ports */
	437	if (rtnl_mdbdump_req(&rth, PF_BRIDGE) < 0) {
	438	perror("Cannot send dump request");
	439	return -1;
	440	}
e06c7f7e	441
b11b495e NA	442	open_json_object("router");
	443	if (rtnl_dump_filter(&rth, print_rtrs, stdout) < 0) {
	444	fprintf(stderr, "Dump terminated\n");
	445	return -1;
	446	}
	447	close_json_object();
	448
	449	close_json_object();
c7c1a1ef SH	450	delete_json_obj();
c7c1a1ef SH	451	fflush(stdout);
e06c7f7e CW	452
	453	return 0;
	454	}
	455
c29f65db VO	456	static int mdb_parse_grp(const char grp, struct br_mdb_entry e)
	457	{
	458	if (inet_pton(AF_INET, grp, &e->addr.u.ip4)) {
	459	e->addr.proto = htons(ETH_P_IP);
	460	return 0;
	461	}
	462	if (inet_pton(AF_INET6, grp, &e->addr.u.ip6)) {
	463	e->addr.proto = htons(ETH_P_IPV6);
	464	return 0;
	465	}
	466	if (ll_addr_a2n((char *)e->addr.u.mac_addr, sizeof(e->addr.u.mac_addr),
	467	grp) == ETH_ALEN) {
	468	e->addr.proto = 0;
	469	return 0;
	470	}
	471
	472	return -1;
	473	}
	474
9dca6767 CW	475	static int mdb_modify(int cmd, int flags, int argc, char **argv)
	476	{
	477	struct {
df4b043f	478	struct nlmsghdr n;
9dca6767	479	struct br_port_msg bpm;
df4b043f	480	char buf[1024];
d17b136f PS	481	} req = {
	482	.n.nlmsg_len = NLMSG_LENGTH(sizeof(struct br_port_msg)),
	483	.n.nlmsg_flags = NLM_F_REQUEST \| flags,
	484	.n.nlmsg_type = cmd,
	485	.bpm.family = PF_BRIDGE,
	486	};
547b3197	487	char d = NULL, p = NULL, grp = NULL, src = NULL;
d17b136f	488	struct br_mdb_entry entry = {};
6aac8617	489	short vid = 0;
9dca6767	490
9dca6767 CW	491	while (argc > 0) {
	492	if (strcmp(*argv, "dev") == 0) {
	493	NEXT_ARG();
	494	d = *argv;
	495	} else if (strcmp(*argv, "grp") == 0) {
	496	NEXT_ARG();
	497	grp = *argv;
d8b75d1a CW	498	} else if (strcmp(*argv, "port") == 0) {
	499	NEXT_ARG();
	500	p = *argv;
	501	} else if (strcmp(*argv, "permanent") == 0) {
	502	if (cmd == RTM_NEWMDB)
	503	entry.state \|= MDB_PERMANENT;
	504	} else if (strcmp(*argv, "temp") == 0) {
	505	;/* nothing */
6aac8617 NA	506	} else if (strcmp(*argv, "vid") == 0) {
	507	NEXT_ARG();
	508	vid = atoi(*argv);
547b3197 NA	509	} else if (strcmp(*argv, "src") == 0) {
	510	NEXT_ARG();
	511	src = *argv;
9dca6767	512	} else {
9dca6767 CW	513	if (matches(*argv, "help") == 0)
	514	usage();
	515	}
	516	argc--; argv++;
	517	}
	518
	519	if (d == NULL \|\| grp == NULL \|\| p == NULL) {
	520	fprintf(stderr, "Device, group address and port name are required arguments.\n");
42ecedd4	521	return -1;
9dca6767 CW	522	}
	523
	524	req.bpm.ifindex = ll_name_to_index(d);
fe99adbc SP	525	if (!req.bpm.ifindex)
fe99adbc SP	526	return nodev(d);
9dca6767 CW	527
9dca6767 CW	528	entry.ifindex = ll_name_to_index(p);
fe99adbc SP	529	if (!entry.ifindex)
fe99adbc SP	530	return nodev(p);
9dca6767	531
c29f65db VO	532	if (mdb_parse_grp(grp, &entry)) {
	533	fprintf(stderr, "Invalid address \"%s\"\n", grp);
	534	return -1;
	535	}
9dca6767	536
6aac8617	537	entry.vid = vid;
9dca6767	538	addattr_l(&req.n, sizeof(req), MDBA_SET_ENTRY, &entry, sizeof(entry));
547b3197 NA	539	if (src) {
	540	struct rtattr *nest = addattr_nest(&req.n, sizeof(req),
	541	MDBA_SET_ENTRY_ATTRS);
	542	struct in6_addr src_ip6;
	543	__be32 src_ip4;
	544
	545	nest->rta_type \|= NLA_F_NESTED;
	546	if (!inet_pton(AF_INET, src, &src_ip4)) {
	547	if (!inet_pton(AF_INET6, src, &src_ip6)) {
	548	fprintf(stderr, "Invalid source address \"%s\"\n", src);
	549	return -1;
	550	}
	551	addattr_l(&req.n, sizeof(req), MDBE_ATTR_SOURCE, &src_ip6, sizeof(src_ip6));
	552	} else {
	553	addattr32(&req.n, sizeof(req), MDBE_ATTR_SOURCE, src_ip4);
	554	}
	555	addattr_nest_end(&req.n, nest);
	556	}
9dca6767	557
86bf43c7	558	if (rtnl_talk(&rth, &req.n, NULL) < 0)
42ecedd4	559	return -1;
9dca6767 CW	560
	561	return 0;
	562	}
	563
e06c7f7e CW	564	int do_mdb(int argc, char **argv)
	565	{
	566	ll_init_map(&rth);
	567
	568	if (argc > 0) {
9dca6767 CW	569	if (matches(*argv, "add") == 0)
	570	return mdb_modify(RTM_NEWMDB, NLM_F_CREATE\|NLM_F_EXCL, argc-1, argv+1);
	571	if (matches(*argv, "delete") == 0)
	572	return mdb_modify(RTM_DELMDB, 0, argc-1, argv+1);
	573
e06c7f7e CW	574	if (matches(*argv, "show") == 0 \|\|
	575	matches(*argv, "lst") == 0 \|\|
	576	matches(*argv, "list") == 0)
	577	return mdb_show(argc-1, argv+1);
	578	if (matches(*argv, "help") == 0)
	579	usage();
	580	} else
	581	return mdb_show(0, NULL);
	582
	583	fprintf(stderr, "Command \"%s\" is unknown, try \"bridge mdb help\".\n", *argv);
	584	exit(-1);
	585	}