[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)
{
	struct timeval tv;
	static char tbuf[32];

	__jiffies_to_tv(&tv, ticks);
	snprintf(tbuf, sizeof(tbuf), "%4lu.%.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));
	}

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

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

	af = e->addr.proto == htons(ETH_P_IP) ? AF_INET : AF_INET6;
	grp = af == AF_INET ? (const void *)&e->addr.u.ip4 :
			      (const void *)&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));

	print_color_string(PRINT_ANY, ifa_family_color(af),
			    "grp", " grp %s",
			    inet_ntop(af, grp, abuf, sizeof(abuf)));
	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");

	open_json_array(PRINT_JSON, "flags");
	if (e->flags & MDB_FLAGS_OFFLOAD)
		print_string(PRINT_ANY, NULL, " %s", "offload");
	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));
	}

	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(etb, MDBA_MDB_EATTR_MAX, MDB_RTA(RTA_DATA(i)),
			     RTA_PAYLOAD(i) - RTA_ALIGN(sizeof(*e)));
		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_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 (!inet_pton(AF_INET, grp, &entry.addr.u.ip4)) {
		if (!inet_pton(AF_INET6, grp, &entry.addr.u.ip6)) {
			fprintf(stderr, "Invalid address \"%s\"\n", grp);
			return -1;
		} else
			entry.addr.proto = htons(ETH_P_IPV6);
	} else
		entry.addr.proto = htons(ETH_P_IP);

	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
c7c1a1ef SH	44	static const char *format_timer(__u32 ticks)
	45	{
	46	struct timeval tv;
	47	static char tbuf[32];
	48
	49	__jiffies_to_tv(&tv, ticks);
	50	snprintf(tbuf, sizeof(tbuf), "%4lu.%.2lu",
	51	(unsigned long)tv.tv_sec,
	52	(unsigned long)tv.tv_usec / 10000);
	53
	54	return tbuf;
	55	}
	56
ba037267 NA	57	static void __print_router_port_stats(FILE f, struct rtattr pattr)
	58	{
	59	struct rtattr *tb[MDBA_ROUTER_PATTR_MAX + 1];
ba037267 NA	60
	61	parse_rtattr(tb, MDBA_ROUTER_PATTR_MAX, MDB_RTR_RTA(RTA_DATA(pattr)),
	62	RTA_PAYLOAD(pattr) - RTA_ALIGN(sizeof(uint32_t)));
c7c1a1ef	63
ba037267	64	if (tb[MDBA_ROUTER_PATTR_TIMER]) {
c7c1a1ef SH	65	__u32 timer = rta_getattr_u32(tb[MDBA_ROUTER_PATTR_TIMER]);
	66
	67	print_string(PRINT_ANY, "timer", " %s",
	68	format_timer(timer));
ba037267	69	}
c7c1a1ef	70
ba037267	71	if (tb[MDBA_ROUTER_PATTR_TYPE]) {
c7c1a1ef SH	72	__u8 type = rta_getattr_u8(tb[MDBA_ROUTER_PATTR_TYPE]);
	73
	74	print_string(PRINT_ANY, "type", " %s",
	75	is_temp_mcast_rtr(type) ? "temp" : "permanent");
ba037267 NA	76	}
	77	}
	78
c7c1a1ef SH	79	static void br_print_router_ports(FILE f, struct rtattr attr,
c7c1a1ef SH	80	const char *brifname)
e06c7f7e	81	{
c7c1a1ef	82	int rem = RTA_PAYLOAD(attr);
e06c7f7e	83	struct rtattr *i;
e06c7f7e	84
c7c1a1ef SH	85	if (is_json_context())
	86	open_json_array(PRINT_JSON, brifname);
	87	else if (!show_stats)
	88	fprintf(f, "router ports on %s: ", brifname);
	89
	90	for (i = RTA_DATA(attr); RTA_OK(i, rem); i = RTA_NEXT(i, rem)) {
	91	uint32_t *port_ifindex = RTA_DATA(i);
	92	const char port_ifname = ll_index_to_name(port_ifindex);
	93
	94	if (is_json_context()) {
	95	open_json_object(NULL);
	96	print_string(PRINT_JSON, "port", NULL, port_ifname);
	97
44e0f6f3 NG	98	if (show_stats)
44e0f6f3 NG	99	__print_router_port_stats(f, i);
c7c1a1ef SH	100	close_json_object();
	101	} else if (show_stats) {
	102	fprintf(f, "router ports on %s: %s",
	103	brifname, port_ifname);
	104
	105	__print_router_port_stats(f, i);
44e0f6f3	106	fprintf(f, "\n");
c7c1a1ef SH	107	} else {
	108	fprintf(f, "%s ", port_ifname);
	109	}
e06c7f7e	110	}
92bba4ed HL	111
	112	if (!show_stats)
	113	print_nl();
	114
c7c1a1ef	115	close_json_array(PRINT_JSON, NULL);
44e0f6f3 NG	116	}
44e0f6f3 NG	117
c7c1a1ef	118	static void print_mdb_entry(FILE f, int ifindex, const struct br_mdb_entry e,
05d4f64d	119	struct nlmsghdr n, struct rtattr *tb)
e06c7f7e	120	{
547b3197	121	const void grp, src;
e06c7f7e	122	SPRINT_BUF(abuf);
c7c1a1ef	123	const char *dev;
6aac8617 NA	124	int af;
6aac8617 NA	125
24687d67 NA	126	if (filter_vlan && e->vid != filter_vlan)
24687d67 NA	127	return;
c7c1a1ef	128
6aac8617	129	af = e->addr.proto == htons(ETH_P_IP) ? AF_INET : AF_INET6;
547b3197	130	grp = af == AF_INET ? (const void *)&e->addr.u.ip4 :
6aac8617	131	(const void *)&e->addr.u.ip6;
c7c1a1ef SH	132	dev = ll_index_to_name(ifindex);
	133
	134	open_json_object(NULL);
	135
a9661b8b NA	136	print_int(PRINT_JSON, "index", NULL, ifindex);
	137	print_color_string(PRINT_ANY, COLOR_IFNAME, "dev", "dev %s", dev);
	138	print_string(PRINT_ANY, "port", " port %s",
c7c1a1ef	139	ll_index_to_name(e->ifindex));
44e0f6f3	140
c7c1a1ef	141	print_color_string(PRINT_ANY, ifa_family_color(af),
a9661b8b	142	"grp", " grp %s",
547b3197 NA	143	inet_ntop(af, grp, abuf, sizeof(abuf)));
	144	if (tb && tb[MDBA_MDB_EATTR_SOURCE]) {
	145	src = (const void *)RTA_DATA(tb[MDBA_MDB_EATTR_SOURCE]);
	146	print_color_string(PRINT_ANY, ifa_family_color(af),
	147	"src", " src %s",
	148	inet_ntop(af, src, abuf, sizeof(abuf)));
	149	}
a9661b8b	150	print_string(PRINT_ANY, "state", " %s",
c7c1a1ef SH	151	(e->state & MDB_PERMANENT) ? "permanent" : "temp");
	152
	153	open_json_array(PRINT_JSON, "flags");
	154	if (e->flags & MDB_FLAGS_OFFLOAD)
a9661b8b	155	print_string(PRINT_ANY, NULL, " %s", "offload");
c7c1a1ef SH	156	close_json_array(PRINT_JSON, NULL);
	157
	158	if (e->vid)
	159	print_uint(PRINT_ANY, "vid", " vid %u", e->vid);
	160
	161	if (show_stats && tb && tb[MDBA_MDB_EATTR_TIMER]) {
	162	__u32 timer = rta_getattr_u32(tb[MDBA_MDB_EATTR_TIMER]);
	163
	164	print_string(PRINT_ANY, "timer", " %s",
	165	format_timer(timer));
05d4f64d	166	}
92bba4ed HL	167
92bba4ed HL	168	print_nl();
c7c1a1ef	169	close_json_object();
e06c7f7e CW	170	}
e06c7f7e CW	171
90d73159 NA	172	static void br_print_mdb_entry(FILE f, int ifindex, struct rtattr attr,
90d73159 NA	173	struct nlmsghdr *n)
e06c7f7e	174	{
05d4f64d NA	175	struct rtattr *etb[MDBA_MDB_EATTR_MAX + 1];
05d4f64d NA	176	struct br_mdb_entry *e;
e06c7f7e CW	177	struct rtattr *i;
e06c7f7e CW	178	int rem;
e06c7f7e CW	179
	180	rem = RTA_PAYLOAD(attr);
	181	for (i = RTA_DATA(attr); RTA_OK(i, rem); i = RTA_NEXT(i, rem)) {
	182	e = RTA_DATA(i);
05d4f64d NA	183	parse_rtattr(etb, MDBA_MDB_EATTR_MAX, MDB_RTA(RTA_DATA(i)),
	184	RTA_PAYLOAD(i) - RTA_ALIGN(sizeof(*e)));
	185	print_mdb_entry(f, ifindex, e, n, etb);
e06c7f7e CW	186	}
	187	}
	188
c7c1a1ef SH	189	static void print_mdb_entries(FILE fp, struct nlmsghdr n,
	190	int ifindex, struct rtattr *mdb)
	191	{
	192	int rem = RTA_PAYLOAD(mdb);
	193	struct rtattr *i;
	194
c7c1a1ef SH	195	for (i = RTA_DATA(mdb); RTA_OK(i, rem); i = RTA_NEXT(i, rem))
c7c1a1ef SH	196	br_print_mdb_entry(fp, ifindex, i, n);
c7c1a1ef SH	197	}
	198
	199	static void print_router_entries(FILE fp, struct nlmsghdr n,
	200	int ifindex, struct rtattr *router)
	201	{
	202	const char *brifname = ll_index_to_name(ifindex);
	203
c7c1a1ef SH	204	if (n->nlmsg_type == RTM_GETMDB) {
	205	if (show_details)
	206	br_print_router_ports(fp, router, brifname);
	207	} else {
	208	struct rtattr *i = RTA_DATA(router);
	209	uint32_t *port_ifindex = RTA_DATA(i);
f5fc7387	210	const char port_name = ll_index_to_name(port_ifindex);
c7c1a1ef SH	211
	212	if (is_json_context()) {
	213	open_json_array(PRINT_JSON, brifname);
	214	open_json_object(NULL);
	215
	216	print_string(PRINT_JSON, "port", NULL,
f5fc7387	217	port_name);
c7c1a1ef SH	218	close_json_object();
	219	close_json_array(PRINT_JSON, NULL);
	220	} else {
	221	fprintf(fp, "router port dev %s master %s\n",
f5fc7387	222	port_name, brifname);
c7c1a1ef SH	223	}
c7c1a1ef SH	224	}
c7c1a1ef SH	225	}
c7c1a1ef SH	226
b11b495e	227	static int __parse_mdb_nlmsg(struct nlmsghdr n, struct rtattr *tb)
e06c7f7e	228	{
e06c7f7e CW	229	struct br_port_msg *r = NLMSG_DATA(n);
e06c7f7e CW	230	int len = n->nlmsg_len;
e06c7f7e	231
c7c1a1ef SH	232	if (n->nlmsg_type != RTM_GETMDB &&
	233	n->nlmsg_type != RTM_NEWMDB &&
	234	n->nlmsg_type != RTM_DELMDB) {
	235	fprintf(stderr,
	236	"Not RTM_GETMDB, RTM_NEWMDB or RTM_DELMDB: %08x %08x %08x\n",
e06c7f7e CW	237	n->nlmsg_len, n->nlmsg_type, n->nlmsg_flags);
	238
	239	return 0;
	240	}
	241
	242	len -= NLMSG_LENGTH(sizeof(*r));
	243	if (len < 0) {
	244	fprintf(stderr, "BUG: wrong nlmsg len %d\n", len);
	245	return -1;
	246	}
	247
	248	if (filter_index && filter_index != r->ifindex)
	249	return 0;
	250
	251	parse_rtattr(tb, MDBA_MAX, MDBA_RTA(r), n->nlmsg_len - NLMSG_LENGTH(sizeof(*r)));
	252
b11b495e NA	253	return 1;
	254	}
	255
	256	static int print_mdbs(struct nlmsghdr n, void arg)
	257	{
	258	struct br_port_msg *r = NLMSG_DATA(n);
	259	struct rtattr *tb[MDBA_MAX+1];
	260	FILE *fp = arg;
	261	int ret;
	262
	263	ret = __parse_mdb_nlmsg(n, tb);
	264	if (ret != 1)
	265	return ret;
	266
	267	if (tb[MDBA_MDB])
	268	print_mdb_entries(fp, n, r->ifindex, tb[MDBA_MDB]);
	269
	270	return 0;
	271	}
	272
	273	static int print_rtrs(struct nlmsghdr n, void arg)
	274	{
	275	struct br_port_msg *r = NLMSG_DATA(n);
	276	struct rtattr *tb[MDBA_MAX+1];
	277	FILE *fp = arg;
	278	int ret;
	279
	280	ret = __parse_mdb_nlmsg(n, tb);
	281	if (ret != 1)
	282	return ret;
	283
	284	if (tb[MDBA_ROUTER])
	285	print_router_entries(fp, n, r->ifindex, tb[MDBA_ROUTER]);
	286
	287	return 0;
	288	}
	289
	290	int print_mdb_mon(struct nlmsghdr n, void arg)
	291	{
	292	struct br_port_msg *r = NLMSG_DATA(n);
	293	struct rtattr *tb[MDBA_MAX+1];
	294	FILE *fp = arg;
	295	int ret;
	296
	297	ret = __parse_mdb_nlmsg(n, tb);
	298	if (ret != 1)
	299	return ret;
	300
c7c1a1ef SH	301	if (n->nlmsg_type == RTM_DELMDB)
c7c1a1ef SH	302	print_bool(PRINT_ANY, "deleted", "Deleted ", true);
e06c7f7e	303
c7c1a1ef SH	304	if (tb[MDBA_MDB])
c7c1a1ef SH	305	print_mdb_entries(fp, n, r->ifindex, tb[MDBA_MDB]);
e06c7f7e	306
c7c1a1ef SH	307	if (tb[MDBA_ROUTER])
c7c1a1ef SH	308	print_router_entries(fp, n, r->ifindex, tb[MDBA_ROUTER]);
4d45bf3b	309
e06c7f7e CW	310	return 0;
	311	}
	312
	313	static int mdb_show(int argc, char **argv)
	314	{
	315	char *filter_dev = NULL;
	316
	317	while (argc > 0) {
	318	if (strcmp(*argv, "dev") == 0) {
	319	NEXT_ARG();
	320	if (filter_dev)
	321	duparg("dev", *argv);
	322	filter_dev = *argv;
24687d67 NA	323	} else if (strcmp(*argv, "vid") == 0) {
	324	NEXT_ARG();
	325	if (filter_vlan)
	326	duparg("vid", *argv);
	327	filter_vlan = atoi(*argv);
e06c7f7e CW	328	}
	329	argc--; argv++;
	330	}
	331
	332	if (filter_dev) {
7a14358b	333	filter_index = ll_name_to_index(filter_dev);
fe99adbc SP	334	if (!filter_index)
fe99adbc SP	335	return nodev(filter_dev);
e06c7f7e CW	336	}
e06c7f7e CW	337
c7c1a1ef	338	new_json_obj(json);
b11b495e	339	open_json_object(NULL);
c7c1a1ef	340
b11b495e	341	/* get mdb entries */
9dbe6df4	342	if (rtnl_mdbdump_req(&rth, PF_BRIDGE) < 0) {
44e0f6f3 NG	343	perror("Cannot send dump request");
	344	return -1;
	345	}
	346
b11b495e NA	347	open_json_array(PRINT_JSON, "mdb");
b11b495e NA	348	if (rtnl_dump_filter(&rth, print_mdbs, stdout) < 0) {
44e0f6f3 NG	349	fprintf(stderr, "Dump terminated\n");
	350	return -1;
	351	}
b11b495e NA	352	close_json_array(PRINT_JSON, NULL);
	353
	354	/* get router ports */
	355	if (rtnl_mdbdump_req(&rth, PF_BRIDGE) < 0) {
	356	perror("Cannot send dump request");
	357	return -1;
	358	}
e06c7f7e	359
b11b495e NA	360	open_json_object("router");
	361	if (rtnl_dump_filter(&rth, print_rtrs, stdout) < 0) {
	362	fprintf(stderr, "Dump terminated\n");
	363	return -1;
	364	}
	365	close_json_object();
	366
	367	close_json_object();
c7c1a1ef SH	368	delete_json_obj();
c7c1a1ef SH	369	fflush(stdout);
e06c7f7e CW	370
	371	return 0;
	372	}
	373
9dca6767 CW	374	static int mdb_modify(int cmd, int flags, int argc, char **argv)
	375	{
	376	struct {
df4b043f	377	struct nlmsghdr n;
9dca6767	378	struct br_port_msg bpm;
df4b043f	379	char buf[1024];
d17b136f PS	380	} req = {
	381	.n.nlmsg_len = NLMSG_LENGTH(sizeof(struct br_port_msg)),
	382	.n.nlmsg_flags = NLM_F_REQUEST \| flags,
	383	.n.nlmsg_type = cmd,
	384	.bpm.family = PF_BRIDGE,
	385	};
547b3197	386	char d = NULL, p = NULL, grp = NULL, src = NULL;
d17b136f	387	struct br_mdb_entry entry = {};
6aac8617	388	short vid = 0;
9dca6767	389
9dca6767 CW	390	while (argc > 0) {
	391	if (strcmp(*argv, "dev") == 0) {
	392	NEXT_ARG();
	393	d = *argv;
	394	} else if (strcmp(*argv, "grp") == 0) {
	395	NEXT_ARG();
	396	grp = *argv;
d8b75d1a CW	397	} else if (strcmp(*argv, "port") == 0) {
	398	NEXT_ARG();
	399	p = *argv;
	400	} else if (strcmp(*argv, "permanent") == 0) {
	401	if (cmd == RTM_NEWMDB)
	402	entry.state \|= MDB_PERMANENT;
	403	} else if (strcmp(*argv, "temp") == 0) {
	404	;/* nothing */
6aac8617 NA	405	} else if (strcmp(*argv, "vid") == 0) {
	406	NEXT_ARG();
	407	vid = atoi(*argv);
547b3197 NA	408	} else if (strcmp(*argv, "src") == 0) {
	409	NEXT_ARG();
	410	src = *argv;
9dca6767	411	} else {
9dca6767 CW	412	if (matches(*argv, "help") == 0)
	413	usage();
	414	}
	415	argc--; argv++;
	416	}
	417
	418	if (d == NULL \|\| grp == NULL \|\| p == NULL) {
	419	fprintf(stderr, "Device, group address and port name are required arguments.\n");
42ecedd4	420	return -1;
9dca6767 CW	421	}
	422
	423	req.bpm.ifindex = ll_name_to_index(d);
fe99adbc SP	424	if (!req.bpm.ifindex)
fe99adbc SP	425	return nodev(d);
9dca6767 CW	426
9dca6767 CW	427	entry.ifindex = ll_name_to_index(p);
fe99adbc SP	428	if (!entry.ifindex)
fe99adbc SP	429	return nodev(p);
9dca6767 CW	430
	431	if (!inet_pton(AF_INET, grp, &entry.addr.u.ip4)) {
	432	if (!inet_pton(AF_INET6, grp, &entry.addr.u.ip6)) {
	433	fprintf(stderr, "Invalid address \"%s\"\n", grp);
	434	return -1;
	435	} else
	436	entry.addr.proto = htons(ETH_P_IPV6);
	437	} else
	438	entry.addr.proto = htons(ETH_P_IP);
	439
6aac8617	440	entry.vid = vid;
9dca6767	441	addattr_l(&req.n, sizeof(req), MDBA_SET_ENTRY, &entry, sizeof(entry));
547b3197 NA	442	if (src) {
	443	struct rtattr *nest = addattr_nest(&req.n, sizeof(req),
	444	MDBA_SET_ENTRY_ATTRS);
	445	struct in6_addr src_ip6;
	446	__be32 src_ip4;
	447
	448	nest->rta_type \|= NLA_F_NESTED;
	449	if (!inet_pton(AF_INET, src, &src_ip4)) {
	450	if (!inet_pton(AF_INET6, src, &src_ip6)) {
	451	fprintf(stderr, "Invalid source address \"%s\"\n", src);
	452	return -1;
	453	}
	454	addattr_l(&req.n, sizeof(req), MDBE_ATTR_SOURCE, &src_ip6, sizeof(src_ip6));
	455	} else {
	456	addattr32(&req.n, sizeof(req), MDBE_ATTR_SOURCE, src_ip4);
	457	}
	458	addattr_nest_end(&req.n, nest);
	459	}
9dca6767	460
86bf43c7	461	if (rtnl_talk(&rth, &req.n, NULL) < 0)
42ecedd4	462	return -1;
9dca6767 CW	463
	464	return 0;
	465	}
	466
e06c7f7e CW	467	int do_mdb(int argc, char **argv)
	468	{
	469	ll_init_map(&rth);
	470
	471	if (argc > 0) {
9dca6767 CW	472	if (matches(*argv, "add") == 0)
	473	return mdb_modify(RTM_NEWMDB, NLM_F_CREATE\|NLM_F_EXCL, argc-1, argv+1);
	474	if (matches(*argv, "delete") == 0)
	475	return mdb_modify(RTM_DELMDB, 0, argc-1, argv+1);
	476
e06c7f7e CW	477	if (matches(*argv, "show") == 0 \|\|
	478	matches(*argv, "lst") == 0 \|\|
	479	matches(*argv, "list") == 0)
	480	return mdb_show(argc-1, argv+1);
	481	if (matches(*argv, "help") == 0)
	482	usage();
	483	} else
	484	return mdb_show(0, NULL);
	485
	486	fprintf(stderr, "Command \"%s\" is unknown, try \"bridge mdb help\".\n", *argv);
	487	exit(-1);
	488	}