[mirror_iproute2.git] / bridge / link.c

/* SPDX-License-Identifier: GPL-2.0 */

#include <stdio.h>
#include <stdlib.h>
#include <unistd.h>
#include <time.h>
#include <sys/socket.h>
#include <sys/time.h>
#include <netinet/in.h>
#include <linux/if.h>
#include <linux/if_bridge.h>
#include <string.h>
#include <stdbool.h>

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

static unsigned int filter_index;

static const char *port_states[] = {
	[BR_STATE_DISABLED] = "disabled",
	[BR_STATE_LISTENING] = "listening",
	[BR_STATE_LEARNING] = "learning",
	[BR_STATE_FORWARDING] = "forwarding",
	[BR_STATE_BLOCKING] = "blocking",
};

static const char *hw_mode[] = {
	"VEB", "VEPA"
};

static void print_link_flags(FILE *fp, unsigned int flags, unsigned int mdown)
{
	open_json_array(PRINT_ANY, is_json_context() ? "flags" : "<");
	if (flags & IFF_UP && !(flags & IFF_RUNNING))
		print_string(PRINT_ANY, NULL,
			     flags ? "%s," : "%s", "NO-CARRIER");
	flags &= ~IFF_RUNNING;

#define _PF(f) if (flags&IFF_##f) {					\
		flags &= ~IFF_##f ;					\
		print_string(PRINT_ANY, NULL, flags ? "%s," : "%s", #f); }
	_PF(LOOPBACK);
	_PF(BROADCAST);
	_PF(POINTOPOINT);
	_PF(MULTICAST);
	_PF(NOARP);
	_PF(ALLMULTI);
	_PF(PROMISC);
	_PF(MASTER);
	_PF(SLAVE);
	_PF(DEBUG);
	_PF(DYNAMIC);
	_PF(AUTOMEDIA);
	_PF(PORTSEL);
	_PF(NOTRAILERS);
	_PF(UP);
	_PF(LOWER_UP);
	_PF(DORMANT);
	_PF(ECHO);
#undef _PF
	if (flags)
		print_hex(PRINT_ANY, NULL, "%x", flags);
	if (mdown)
		print_string(PRINT_ANY, NULL, ",%s", "M-DOWN");
	close_json_array(PRINT_ANY, "> ");
}

static void print_portstate(__u8 state)
{
	if (state <= BR_STATE_BLOCKING)
		print_string(PRINT_ANY, "state",
			     "state %s ", port_states[state]);
	else
		print_uint(PRINT_ANY, "state",
			     "state (%d) ", state);
}

static void print_hwmode(__u16 mode)
{
	if (mode >= ARRAY_SIZE(hw_mode))
		print_0xhex(PRINT_ANY, "hwmode",
			    "hwmode %#llx ", mode);
	else
		print_string(PRINT_ANY, "hwmode",
			     "hwmode %s ", hw_mode[mode]);
}

static void print_protinfo(FILE *fp, struct rtattr *attr)
{
	if (attr->rta_type & NLA_F_NESTED) {
		struct rtattr *prtb[IFLA_BRPORT_MAX + 1];

		parse_rtattr_nested(prtb, IFLA_BRPORT_MAX, attr);

		if (prtb[IFLA_BRPORT_STATE])
			print_portstate(rta_getattr_u8(prtb[IFLA_BRPORT_STATE]));

		if (prtb[IFLA_BRPORT_PRIORITY])
			print_uint(PRINT_ANY, "priority",
				   "priority %u ",
				   rta_getattr_u16(prtb[IFLA_BRPORT_PRIORITY]));

		if (prtb[IFLA_BRPORT_COST])
			print_uint(PRINT_ANY, "cost",
				   "cost %u ",
				   rta_getattr_u32(prtb[IFLA_BRPORT_COST]));

		if (!show_details)
			return;

		if (!is_json_context())
			fprintf(fp, "%s    ", _SL_);

		if (prtb[IFLA_BRPORT_MODE])
			print_on_off(PRINT_ANY, "hairpin", "hairpin %s ",
				     rta_getattr_u8(prtb[IFLA_BRPORT_MODE]));
		if (prtb[IFLA_BRPORT_GUARD])
			print_on_off(PRINT_ANY, "guard", "guard %s ",
				     rta_getattr_u8(prtb[IFLA_BRPORT_GUARD]));
		if (prtb[IFLA_BRPORT_PROTECT])
			print_on_off(PRINT_ANY, "root_block", "root_block %s ",
				     rta_getattr_u8(prtb[IFLA_BRPORT_PROTECT]));
		if (prtb[IFLA_BRPORT_FAST_LEAVE])
			print_on_off(PRINT_ANY, "fastleave", "fastleave %s ",
				     rta_getattr_u8(prtb[IFLA_BRPORT_FAST_LEAVE]));
		if (prtb[IFLA_BRPORT_LEARNING])
			print_on_off(PRINT_ANY, "learning", "learning %s ",
				     rta_getattr_u8(prtb[IFLA_BRPORT_LEARNING]));
		if (prtb[IFLA_BRPORT_LEARNING_SYNC])
			print_on_off(PRINT_ANY, "learning_sync", "learning_sync %s ",
				     rta_getattr_u8(prtb[IFLA_BRPORT_LEARNING_SYNC]));
		if (prtb[IFLA_BRPORT_UNICAST_FLOOD])
			print_on_off(PRINT_ANY, "flood", "flood %s ",
				     rta_getattr_u8(prtb[IFLA_BRPORT_UNICAST_FLOOD]));
		if (prtb[IFLA_BRPORT_MCAST_FLOOD])
			print_on_off(PRINT_ANY, "mcast_flood", "mcast_flood %s ",
				     rta_getattr_u8(prtb[IFLA_BRPORT_MCAST_FLOOD]));
		if (prtb[IFLA_BRPORT_MCAST_TO_UCAST])
			print_on_off(PRINT_ANY, "mcast_to_unicast", "mcast_to_unicast %s ",
				     rta_getattr_u8(prtb[IFLA_BRPORT_MCAST_TO_UCAST]));
		if (prtb[IFLA_BRPORT_NEIGH_SUPPRESS])
			print_on_off(PRINT_ANY, "neigh_suppress", "neigh_suppress %s ",
				     rta_getattr_u8(prtb[IFLA_BRPORT_NEIGH_SUPPRESS]));
		if (prtb[IFLA_BRPORT_VLAN_TUNNEL])
			print_on_off(PRINT_ANY, "vlan_tunnel", "vlan_tunnel %s ",
				     rta_getattr_u8(prtb[IFLA_BRPORT_VLAN_TUNNEL]));

		if (prtb[IFLA_BRPORT_BACKUP_PORT]) {
			int ifidx;

			ifidx = rta_getattr_u32(prtb[IFLA_BRPORT_BACKUP_PORT]);
			print_string(PRINT_ANY,
				     "backup_port", "backup_port %s ",
				     ll_index_to_name(ifidx));
		}

		if (prtb[IFLA_BRPORT_ISOLATED])
			print_on_off(PRINT_ANY, "isolated", "isolated %s ",
				     rta_getattr_u8(prtb[IFLA_BRPORT_ISOLATED]));
	} else
		print_portstate(rta_getattr_u8(attr));
}


/*
 * This is reported by HW devices that have some bridging
 * capabilities.
 */
static void print_af_spec(struct rtattr *attr, int ifindex)
{
	struct rtattr *aftb[IFLA_BRIDGE_MAX+1];

	parse_rtattr_nested(aftb, IFLA_BRIDGE_MAX, attr);

	if (aftb[IFLA_BRIDGE_MODE])
		print_hwmode(rta_getattr_u16(aftb[IFLA_BRIDGE_MODE]));

	if (!show_details)
		return;

	if (aftb[IFLA_BRIDGE_VLAN_INFO])
		print_vlan_info(aftb[IFLA_BRIDGE_VLAN_INFO], ifindex);
}

int print_linkinfo(struct nlmsghdr *n, void *arg)
{
	FILE *fp = arg;
	struct ifinfomsg *ifi = NLMSG_DATA(n);
	struct rtattr *tb[IFLA_MAX+1];
	unsigned int m_flag = 0;
	int len = n->nlmsg_len;
	const char *name;

	len -= NLMSG_LENGTH(sizeof(*ifi));
	if (len < 0) {
		fprintf(stderr, "Message too short!\n");
		return -1;
	}

	if (!(ifi->ifi_family == AF_BRIDGE || ifi->ifi_family == AF_UNSPEC))
		return 0;

	if (filter_index && filter_index != ifi->ifi_index)
		return 0;

	parse_rtattr_flags(tb, IFLA_MAX, IFLA_RTA(ifi), len, NLA_F_NESTED);

	name = get_ifname_rta(ifi->ifi_index, tb[IFLA_IFNAME]);
	if (!name)
		return -1;

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

	print_int(PRINT_ANY, "ifindex", "%d: ", ifi->ifi_index);
	m_flag = print_name_and_link("%s: ", name, tb);
	print_link_flags(fp, ifi->ifi_flags, m_flag);

	if (tb[IFLA_MTU])
		print_int(PRINT_ANY,
			  "mtu", "mtu %u ",
			  rta_getattr_u32(tb[IFLA_MTU]));

	if (tb[IFLA_MASTER]) {
		int master = rta_getattr_u32(tb[IFLA_MASTER]);

		print_string(PRINT_ANY, "master", "master %s ",
			     ll_index_to_name(master));
	}

	if (tb[IFLA_PROTINFO])
		print_protinfo(fp, tb[IFLA_PROTINFO]);

	if (tb[IFLA_AF_SPEC])
		print_af_spec(tb[IFLA_AF_SPEC], ifi->ifi_index);

	print_string(PRINT_FP, NULL, "%s", "\n");
	close_json_object();
	fflush(fp);
	return 0;
}

static void usage(void)
{
	fprintf(stderr,
		"Usage: bridge link set dev DEV [ cost COST ] [ priority PRIO ] [ state STATE ]\n"
		"                               [ guard {on | off} ]\n"
		"                               [ hairpin {on | off} ]\n"
		"                               [ fastleave {on | off} ]\n"
		"                               [ root_block {on | off} ]\n"
		"                               [ learning {on | off} ]\n"
		"                               [ learning_sync {on | off} ]\n"
		"                               [ flood {on | off} ]\n"
		"                               [ mcast_flood {on | off} ]\n"
		"                               [ mcast_to_unicast {on | off} ]\n"
		"                               [ neigh_suppress {on | off} ]\n"
		"                               [ vlan_tunnel {on | off} ]\n"
		"                               [ isolated {on | off} ]\n"
		"                               [ hwmode {vepa | veb} ]\n"
		"                               [ backup_port DEVICE ] [ nobackup_port ]\n"
		"                               [ self ] [ master ]\n"
		"       bridge link show [dev DEV]\n");
	exit(-1);
}

static int brlink_modify(int argc, char **argv)
{
	struct {
		struct nlmsghdr  n;
		struct ifinfomsg ifm;
		char             buf[512];
	} req = {
		.n.nlmsg_len = NLMSG_LENGTH(sizeof(struct ifinfomsg)),
		.n.nlmsg_flags = NLM_F_REQUEST,
		.n.nlmsg_type = RTM_SETLINK,
		.ifm.ifi_family = PF_BRIDGE,
	};
	char *d = NULL;
	int backup_port_idx = -1;
	__s8 neigh_suppress = -1;
	__s8 learning = -1;
	__s8 learning_sync = -1;
	__s8 flood = -1;
	__s8 vlan_tunnel = -1;
	__s8 mcast_flood = -1;
	__s8 mcast_to_unicast = -1;
	__s8 isolated = -1;
	__s8 hairpin = -1;
	__s8 bpdu_guard = -1;
	__s8 fast_leave = -1;
	__s8 root_block = -1;
	__u32 cost = 0;
	__s16 priority = -1;
	__s8 state = -1;
	__s16 mode = -1;
	__u16 flags = 0;
	struct rtattr *nest;
	int ret;

	while (argc > 0) {
		if (strcmp(*argv, "dev") == 0) {
			NEXT_ARG();
			d = *argv;
		} else if (strcmp(*argv, "guard") == 0) {
			NEXT_ARG();
			bpdu_guard = parse_on_off("guard", *argv, &ret);
			if (ret)
				return ret;
		} else if (strcmp(*argv, "hairpin") == 0) {
			NEXT_ARG();
			hairpin = parse_on_off("hairpin", *argv, &ret);
			if (ret)
				return ret;
		} else if (strcmp(*argv, "fastleave") == 0) {
			NEXT_ARG();
			fast_leave = parse_on_off("fastleave", *argv, &ret);
			if (ret)
				return ret;
		} else if (strcmp(*argv, "root_block") == 0) {
			NEXT_ARG();
			root_block = parse_on_off("root_block", *argv, &ret);
			if (ret)
				return ret;
		} else if (strcmp(*argv, "learning") == 0) {
			NEXT_ARG();
			learning = parse_on_off("learning", *argv, &ret);
			if (ret)
				return ret;
		} else if (strcmp(*argv, "learning_sync") == 0) {
			NEXT_ARG();
			learning_sync = parse_on_off("learning_sync", *argv, &ret);
			if (ret)
				return ret;
		} else if (strcmp(*argv, "flood") == 0) {
			NEXT_ARG();
			flood = parse_on_off("flood", *argv, &ret);
			if (ret)
				return ret;
		} else if (strcmp(*argv, "mcast_flood") == 0) {
			NEXT_ARG();
			mcast_flood = parse_on_off("mcast_flood", *argv, &ret);
			if (ret)
				return ret;
		} else if (strcmp(*argv, "mcast_to_unicast") == 0) {
			NEXT_ARG();
			mcast_to_unicast = parse_on_off("mcast_to_unicast", *argv, &ret);
			if (ret)
				return ret;
		} else if (strcmp(*argv, "cost") == 0) {
			NEXT_ARG();
			cost = atoi(*argv);
		} else if (strcmp(*argv, "priority") == 0) {
			NEXT_ARG();
			priority = atoi(*argv);
		} else if (strcmp(*argv, "state") == 0) {
			NEXT_ARG();
			char *endptr;
			size_t nstates = ARRAY_SIZE(port_states);

			state = strtol(*argv, &endptr, 10);
			if (!(**argv != '\0' && *endptr == '\0')) {
				for (state = 0; state < nstates; state++)
					if (strcasecmp(port_states[state], *argv) == 0)
						break;
				if (state == nstates) {
					fprintf(stderr,
						"Error: invalid STP port state\n");
					return -1;
				}
			}
		} else if (strcmp(*argv, "hwmode") == 0) {
			NEXT_ARG();
			flags = BRIDGE_FLAGS_SELF;
			if (strcmp(*argv, "vepa") == 0)
				mode = BRIDGE_MODE_VEPA;
			else if (strcmp(*argv, "veb") == 0)
				mode = BRIDGE_MODE_VEB;
			else {
				fprintf(stderr,
					"Mode argument must be \"vepa\" or \"veb\".\n");
				return -1;
			}
		} else if (strcmp(*argv, "self") == 0) {
			flags |= BRIDGE_FLAGS_SELF;
		} else if (strcmp(*argv, "master") == 0) {
			flags |= BRIDGE_FLAGS_MASTER;
		} else if (strcmp(*argv, "neigh_suppress") == 0) {
			NEXT_ARG();
			neigh_suppress = parse_on_off("neigh_suppress", *argv, &ret);
			if (ret)
				return ret;
		} else if (strcmp(*argv, "vlan_tunnel") == 0) {
			NEXT_ARG();
			vlan_tunnel = parse_on_off("vlan_tunnel", *argv, &ret);
			if (ret)
				return ret;
		} else if (strcmp(*argv, "isolated") == 0) {
			NEXT_ARG();
			isolated = parse_on_off("isolated", *argv, &ret);
			if (ret)
				return ret;
		} else if (strcmp(*argv, "backup_port") == 0) {
			NEXT_ARG();
			backup_port_idx = ll_name_to_index(*argv);
			if (!backup_port_idx) {
				fprintf(stderr, "Error: device %s does not exist\n",
					*argv);
				return -1;
			}
		} else if (strcmp(*argv, "nobackup_port") == 0) {
			backup_port_idx = 0;
		} else {
			usage();
		}
		argc--; argv++;
	}
	if (d == NULL) {
		fprintf(stderr, "Device is a required argument.\n");
		return -1;
	}


	req.ifm.ifi_index = ll_name_to_index(d);
	if (req.ifm.ifi_index == 0) {
		fprintf(stderr, "Cannot find bridge device \"%s\"\n", d);
		return -1;
	}

	/* Nested PROTINFO attribute.  Contains: port flags, cost, priority and
	 * state.
	 */
	nest = addattr_nest(&req.n, sizeof(req),
			    IFLA_PROTINFO | NLA_F_NESTED);
	/* Flags first */
	if (bpdu_guard >= 0)
		addattr8(&req.n, sizeof(req), IFLA_BRPORT_GUARD, bpdu_guard);
	if (hairpin >= 0)
		addattr8(&req.n, sizeof(req), IFLA_BRPORT_MODE, hairpin);
	if (fast_leave >= 0)
		addattr8(&req.n, sizeof(req), IFLA_BRPORT_FAST_LEAVE,
			 fast_leave);
	if (root_block >= 0)
		addattr8(&req.n, sizeof(req), IFLA_BRPORT_PROTECT, root_block);
	if (flood >= 0)
		addattr8(&req.n, sizeof(req), IFLA_BRPORT_UNICAST_FLOOD, flood);
	if (mcast_flood >= 0)
		addattr8(&req.n, sizeof(req), IFLA_BRPORT_MCAST_FLOOD,
			 mcast_flood);
	if (mcast_to_unicast >= 0)
		addattr8(&req.n, sizeof(req), IFLA_BRPORT_MCAST_TO_UCAST,
			 mcast_to_unicast);
	if (learning >= 0)
		addattr8(&req.n, sizeof(req), IFLA_BRPORT_LEARNING, learning);
	if (learning_sync >= 0)
		addattr8(&req.n, sizeof(req), IFLA_BRPORT_LEARNING_SYNC,
			 learning_sync);

	if (cost > 0)
		addattr32(&req.n, sizeof(req), IFLA_BRPORT_COST, cost);

	if (priority >= 0)
		addattr16(&req.n, sizeof(req), IFLA_BRPORT_PRIORITY, priority);

	if (state >= 0)
		addattr8(&req.n, sizeof(req), IFLA_BRPORT_STATE, state);

	if (neigh_suppress != -1)
		addattr8(&req.n, sizeof(req), IFLA_BRPORT_NEIGH_SUPPRESS,
			 neigh_suppress);
	if (vlan_tunnel != -1)
		addattr8(&req.n, sizeof(req), IFLA_BRPORT_VLAN_TUNNEL,
			 vlan_tunnel);
	if (isolated != -1)
		addattr8(&req.n, sizeof(req), IFLA_BRPORT_ISOLATED, isolated);

	if (backup_port_idx != -1)
		addattr32(&req.n, sizeof(req), IFLA_BRPORT_BACKUP_PORT,
			  backup_port_idx);

	addattr_nest_end(&req.n, nest);

	/* IFLA_AF_SPEC nested attribute. Contains IFLA_BRIDGE_FLAGS that
	 * designates master or self operation and IFLA_BRIDGE_MODE
	 * for hw 'vepa' or 'veb' operation modes. The hwmodes are
	 * only valid in 'self' mode on some devices so far.
	 */
	if (mode >= 0 || flags > 0) {
		nest = addattr_nest(&req.n, sizeof(req), IFLA_AF_SPEC);

		if (flags > 0)
			addattr16(&req.n, sizeof(req), IFLA_BRIDGE_FLAGS, flags);

		if (mode >= 0)
			addattr16(&req.n, sizeof(req), IFLA_BRIDGE_MODE, mode);

		addattr_nest_end(&req.n, nest);
	}

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

	return 0;
}

static int brlink_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;
		}
		argc--; argv++;
	}

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

	if (show_details) {
		if (rtnl_linkdump_req_filter(&rth, PF_BRIDGE,
					     (compress_vlans ?
					      RTEXT_FILTER_BRVLAN_COMPRESSED :
					      RTEXT_FILTER_BRVLAN)) < 0) {
			perror("Cannon send dump request");
			exit(1);
		}
	} else {
		if (rtnl_linkdump_req(&rth, PF_BRIDGE) < 0) {
			perror("Cannon send dump request");
			exit(1);
		}
	}

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

	delete_json_obj();
	fflush(stdout);
	return 0;
}

int do_link(int argc, char **argv)
{
	ll_init_map(&rth);
	if (argc > 0) {
		if (matches(*argv, "set") == 0 ||
		    matches(*argv, "change") == 0)
			return brlink_modify(argc-1, argv+1);
		if (matches(*argv, "show") == 0 ||
		    matches(*argv, "lst") == 0 ||
		    matches(*argv, "list") == 0)
			return brlink_show(argc-1, argv+1);
		if (matches(*argv, "help") == 0)
			usage();
	} else
		return brlink_show(0, NULL);

	fprintf(stderr, "Command \"%s\" is unknown, try \"bridge link help\".\n", *argv);
	exit(-1);
}
Commit	Line	Data
6054c1eb	1	/* SPDX-License-Identifier: GPL-2.0 */
d04bc300 SH	2
	3	#include <stdio.h>
	4	#include <stdlib.h>
	5	#include <unistd.h>
	6	#include <time.h>
	7	#include <sys/socket.h>
	8	#include <sys/time.h>
	9	#include <netinet/in.h>
	10	#include <linux/if.h>
	11	#include <linux/if_bridge.h>
	12	#include <string.h>
64108901	13	#include <stdbool.h>
d04bc300	14
f32e4977	15	#include "json_print.h"
64108901	16	#include "libnetlink.h"
d04bc300 SH	17	#include "utils.h"
	18	#include "br_common.h"
	19
9dca899b	20	static unsigned int filter_index;
64108901	21
d04bc300 SH	22	static const char *port_states[] = {
	23	[BR_STATE_DISABLED] = "disabled",
	24	[BR_STATE_LISTENING] = "listening",
	25	[BR_STATE_LEARNING] = "learning",
	26	[BR_STATE_FORWARDING] = "forwarding",
	27	[BR_STATE_BLOCKING] = "blocking",
	28	};
	29
f32e4977 SH	30	static const char *hw_mode[] = {
	31	"VEB", "VEPA"
	32	};
	33
	34	static void print_link_flags(FILE *fp, unsigned int flags, unsigned int mdown)
d04bc300	35	{
f32e4977	36	open_json_array(PRINT_ANY, is_json_context() ? "flags" : "<");
d04bc300	37	if (flags & IFF_UP && !(flags & IFF_RUNNING))
f32e4977 SH	38	print_string(PRINT_ANY, NULL,
f32e4977 SH	39	flags ? "%s," : "%s", "NO-CARRIER");
d04bc300	40	flags &= ~IFF_RUNNING;
f32e4977 SH	41
	42	#define _PF(f) if (flags&IFF_##f) { \
	43	flags &= ~IFF_##f ; \
	44	print_string(PRINT_ANY, NULL, flags ? "%s," : "%s", #f); }
d04bc300 SH	45	_PF(LOOPBACK);
	46	_PF(BROADCAST);
	47	_PF(POINTOPOINT);
	48	_PF(MULTICAST);
	49	_PF(NOARP);
	50	_PF(ALLMULTI);
	51	_PF(PROMISC);
	52	_PF(MASTER);
	53	_PF(SLAVE);
	54	_PF(DEBUG);
	55	_PF(DYNAMIC);
	56	_PF(AUTOMEDIA);
	57	_PF(PORTSEL);
	58	_PF(NOTRAILERS);
	59	_PF(UP);
	60	_PF(LOWER_UP);
	61	_PF(DORMANT);
	62	_PF(ECHO);
	63	#undef _PF
df4b043f	64	if (flags)
f32e4977 SH	65	print_hex(PRINT_ANY, NULL, "%x", flags);
	66	if (mdown)
	67	print_string(PRINT_ANY, NULL, ",%s", "M-DOWN");
	68	close_json_array(PRINT_ANY, "> ");
d04bc300 SH	69	}
d04bc300 SH	70
f32e4977 SH	71	static void print_portstate(__u8 state)
	72	{
	73	if (state <= BR_STATE_BLOCKING)
	74	print_string(PRINT_ANY, "state",
	75	"state %s ", port_states[state]);
	76	else
	77	print_uint(PRINT_ANY, "state",
	78	"state (%d) ", state);
	79	}
b1b7ce0f	80
f32e4977	81	static void print_hwmode(__u16 mode)
b1b7ce0f	82	{
f32e4977 SH	83	if (mode >= ARRAY_SIZE(hw_mode))
f32e4977 SH	84	print_0xhex(PRINT_ANY, "hwmode",
90c5c969	85	"hwmode %#llx ", mode);
b1b7ce0f	86	else
f32e4977 SH	87	print_string(PRINT_ANY, "hwmode",
f32e4977 SH	88	"hwmode %s ", hw_mode[mode]);
b1b7ce0f VY	89	}
b1b7ce0f VY	90
f32e4977	91	static void print_protinfo(FILE fp, struct rtattr attr)
b1b7ce0f	92	{
f32e4977 SH	93	if (attr->rta_type & NLA_F_NESTED) {
	94	struct rtattr *prtb[IFLA_BRPORT_MAX + 1];
	95
	96	parse_rtattr_nested(prtb, IFLA_BRPORT_MAX, attr);
	97
	98	if (prtb[IFLA_BRPORT_STATE])
	99	print_portstate(rta_getattr_u8(prtb[IFLA_BRPORT_STATE]));
	100
	101	if (prtb[IFLA_BRPORT_PRIORITY])
	102	print_uint(PRINT_ANY, "priority",
	103	"priority %u ",
	104	rta_getattr_u16(prtb[IFLA_BRPORT_PRIORITY]));
	105
	106	if (prtb[IFLA_BRPORT_COST])
	107	print_uint(PRINT_ANY, "cost",
	108	"cost %u ",
	109	rta_getattr_u32(prtb[IFLA_BRPORT_COST]));
	110
	111	if (!show_details)
	112	return;
	113
	114	if (!is_json_context())
	115	fprintf(fp, "%s ", _SL_);
	116
	117	if (prtb[IFLA_BRPORT_MODE])
94d12fd7 PM	118	print_on_off(PRINT_ANY, "hairpin", "hairpin %s ",
94d12fd7 PM	119	rta_getattr_u8(prtb[IFLA_BRPORT_MODE]));
f32e4977	120	if (prtb[IFLA_BRPORT_GUARD])
94d12fd7 PM	121	print_on_off(PRINT_ANY, "guard", "guard %s ",
94d12fd7 PM	122	rta_getattr_u8(prtb[IFLA_BRPORT_GUARD]));
f32e4977	123	if (prtb[IFLA_BRPORT_PROTECT])
94d12fd7 PM	124	print_on_off(PRINT_ANY, "root_block", "root_block %s ",
94d12fd7 PM	125	rta_getattr_u8(prtb[IFLA_BRPORT_PROTECT]));
f32e4977	126	if (prtb[IFLA_BRPORT_FAST_LEAVE])
94d12fd7 PM	127	print_on_off(PRINT_ANY, "fastleave", "fastleave %s ",
94d12fd7 PM	128	rta_getattr_u8(prtb[IFLA_BRPORT_FAST_LEAVE]));
f32e4977	129	if (prtb[IFLA_BRPORT_LEARNING])
94d12fd7 PM	130	print_on_off(PRINT_ANY, "learning", "learning %s ",
94d12fd7 PM	131	rta_getattr_u8(prtb[IFLA_BRPORT_LEARNING]));
f32e4977	132	if (prtb[IFLA_BRPORT_LEARNING_SYNC])
94d12fd7 PM	133	print_on_off(PRINT_ANY, "learning_sync", "learning_sync %s ",
94d12fd7 PM	134	rta_getattr_u8(prtb[IFLA_BRPORT_LEARNING_SYNC]));
f32e4977	135	if (prtb[IFLA_BRPORT_UNICAST_FLOOD])
94d12fd7 PM	136	print_on_off(PRINT_ANY, "flood", "flood %s ",
94d12fd7 PM	137	rta_getattr_u8(prtb[IFLA_BRPORT_UNICAST_FLOOD]));
f32e4977	138	if (prtb[IFLA_BRPORT_MCAST_FLOOD])
94d12fd7 PM	139	print_on_off(PRINT_ANY, "mcast_flood", "mcast_flood %s ",
94d12fd7 PM	140	rta_getattr_u8(prtb[IFLA_BRPORT_MCAST_FLOOD]));
b5a754b1	141	if (prtb[IFLA_BRPORT_MCAST_TO_UCAST])
94d12fd7 PM	142	print_on_off(PRINT_ANY, "mcast_to_unicast", "mcast_to_unicast %s ",
94d12fd7 PM	143	rta_getattr_u8(prtb[IFLA_BRPORT_MCAST_TO_UCAST]));
f32e4977	144	if (prtb[IFLA_BRPORT_NEIGH_SUPPRESS])
94d12fd7 PM	145	print_on_off(PRINT_ANY, "neigh_suppress", "neigh_suppress %s ",
94d12fd7 PM	146	rta_getattr_u8(prtb[IFLA_BRPORT_NEIGH_SUPPRESS]));
f32e4977	147	if (prtb[IFLA_BRPORT_VLAN_TUNNEL])
94d12fd7 PM	148	print_on_off(PRINT_ANY, "vlan_tunnel", "vlan_tunnel %s ",
94d12fd7 PM	149	rta_getattr_u8(prtb[IFLA_BRPORT_VLAN_TUNNEL]));
d13d52d0 NA	150
	151	if (prtb[IFLA_BRPORT_BACKUP_PORT]) {
	152	int ifidx;
	153
	154	ifidx = rta_getattr_u32(prtb[IFLA_BRPORT_BACKUP_PORT]);
	155	print_string(PRINT_ANY,
	156	"backup_port", "backup_port %s ",
	157	ll_index_to_name(ifidx));
	158	}
	159
05001bcf	160	if (prtb[IFLA_BRPORT_ISOLATED])
94d12fd7 PM	161	print_on_off(PRINT_ANY, "isolated", "isolated %s ",
94d12fd7 PM	162	rta_getattr_u8(prtb[IFLA_BRPORT_ISOLATED]));
f32e4977 SH	163	} else
f32e4977 SH	164	print_portstate(rta_getattr_u8(attr));
b1b7ce0f VY	165	}
b1b7ce0f VY	166
f32e4977 SH	167
	168	/*
	169	* This is reported by HW devices that have some bridging
	170	* capabilities.
	171	*/
0f362674	172	static void print_af_spec(struct rtattr *attr, int ifindex)
b1b7ce0f	173	{
f32e4977 SH	174	struct rtattr *aftb[IFLA_BRIDGE_MAX+1];
	175
	176	parse_rtattr_nested(aftb, IFLA_BRIDGE_MAX, attr);
	177
	178	if (aftb[IFLA_BRIDGE_MODE])
	179	print_hwmode(rta_getattr_u16(aftb[IFLA_BRIDGE_MODE]));
	180
	181	if (!show_details)
	182	return;
	183
	184	if (aftb[IFLA_BRIDGE_VLAN_INFO])
0f362674	185	print_vlan_info(aftb[IFLA_BRIDGE_VLAN_INFO], ifindex);
b1b7ce0f VY	186	}
b1b7ce0f VY	187
cd554f2c	188	int print_linkinfo(struct nlmsghdr n, void arg)
d04bc300 SH	189	{
d04bc300 SH	190	FILE *fp = arg;
d04bc300	191	struct ifinfomsg *ifi = NLMSG_DATA(n);
df4b043f	192	struct rtattr *tb[IFLA_MAX+1];
f32e4977	193	unsigned int m_flag = 0;
fcac9665 SP	194	int len = n->nlmsg_len;
fcac9665 SP	195	const char *name;
d04bc300 SH	196
	197	len -= NLMSG_LENGTH(sizeof(*ifi));
	198	if (len < 0) {
	199	fprintf(stderr, "Message too short!\n");
	200	return -1;
df4b043f	201	}
d04bc300 SH	202
	203	if (!(ifi->ifi_family == AF_BRIDGE \|\| ifi->ifi_family == AF_UNSPEC))
	204	return 0;
	205
64108901 VY	206	if (filter_index && filter_index != ifi->ifi_index)
	207	return 0;
	208
b1b7ce0f	209	parse_rtattr_flags(tb, IFLA_MAX, IFLA_RTA(ifi), len, NLA_F_NESTED);
d04bc300	210
fcac9665 SP	211	name = get_ifname_rta(ifi->ifi_index, tb[IFLA_IFNAME]);
fcac9665 SP	212	if (!name)
d04bc300	213	return -1;
d04bc300	214
f32e4977	215	open_json_object(NULL);
d04bc300	216	if (n->nlmsg_type == RTM_DELLINK)
f32e4977	217	print_bool(PRINT_ANY, "deleted", "Deleted ", true);
d04bc300	218
f32e4977	219	print_int(PRINT_ANY, "ifindex", "%d: ", ifi->ifi_index);
4328b687	220	m_flag = print_name_and_link("%s: ", name, tb);
f32e4977	221	print_link_flags(fp, ifi->ifi_flags, m_flag);
d04bc300 SH	222
d04bc300 SH	223	if (tb[IFLA_MTU])
f32e4977 SH	224	print_int(PRINT_ANY,
	225	"mtu", "mtu %u ",
	226	rta_getattr_u32(tb[IFLA_MTU]));
d04bc300	227
45d3a6ef SP	228	if (tb[IFLA_MASTER]) {
	229	int master = rta_getattr_u32(tb[IFLA_MASTER]);
	230
f32e4977 SH	231	print_string(PRINT_ANY, "master", "master %s ",
f32e4977 SH	232	ll_index_to_name(master));
45d3a6ef	233	}
d04bc300	234
f32e4977 SH	235	if (tb[IFLA_PROTINFO])
f32e4977 SH	236	print_protinfo(fp, tb[IFLA_PROTINFO]);
d04bc300	237
f32e4977	238	if (tb[IFLA_AF_SPEC])
0f362674	239	print_af_spec(tb[IFLA_AF_SPEC], ifi->ifi_index);
d04bc300	240
f32e4977 SH	241	print_string(PRINT_FP, NULL, "%s", "\n");
f32e4977 SH	242	close_json_object();
d04bc300 SH	243	fflush(fp);
	244	return 0;
	245	}
64108901 VY	246
	247	static void usage(void)
	248	{
8589eb4e MC	249	fprintf(stderr,
	250	"Usage: bridge link set dev DEV [ cost COST ] [ priority PRIO ] [ state STATE ]\n"
	251	" [ guard {on \| off} ]\n"
	252	" [ hairpin {on \| off} ]\n"
	253	" [ fastleave {on \| off} ]\n"
	254	" [ root_block {on \| off} ]\n"
	255	" [ learning {on \| off} ]\n"
	256	" [ learning_sync {on \| off} ]\n"
	257	" [ flood {on \| off} ]\n"
	258	" [ mcast_flood {on \| off} ]\n"
	259	" [ mcast_to_unicast {on \| off} ]\n"
	260	" [ neigh_suppress {on \| off} ]\n"
	261	" [ vlan_tunnel {on \| off} ]\n"
	262	" [ isolated {on \| off} ]\n"
	263	" [ hwmode {vepa \| veb} ]\n"
	264	" [ backup_port DEVICE ] [ nobackup_port ]\n"
	265	" [ self ] [ master ]\n"
	266	" bridge link show [dev DEV]\n");
64108901 VY	267	exit(-1);
	268	}
	269
64108901 VY	270	static int brlink_modify(int argc, char **argv)
	271	{
	272	struct {
	273	struct nlmsghdr n;
	274	struct ifinfomsg ifm;
	275	char buf[512];
d17b136f PS	276	} req = {
	277	.n.nlmsg_len = NLMSG_LENGTH(sizeof(struct ifinfomsg)),
	278	.n.nlmsg_flags = NLM_F_REQUEST,
	279	.n.nlmsg_type = RTM_SETLINK,
	280	.ifm.ifi_family = PF_BRIDGE,
	281	};
64108901	282	char *d = NULL;
d13d52d0	283	int backup_port_idx = -1;
41973a47	284	__s8 neigh_suppress = -1;
f0f4ab60	285	__s8 learning = -1;
674bb438	286	__s8 learning_sync = -1;
f0f4ab60	287	__s8 flood = -1;
8cfde5c9	288	__s8 vlan_tunnel = -1;
9208b4e7	289	__s8 mcast_flood = -1;
b5a754b1	290	__s8 mcast_to_unicast = -1;
05001bcf	291	__s8 isolated = -1;
64108901 VY	292	__s8 hairpin = -1;
	293	__s8 bpdu_guard = -1;
	294	__s8 fast_leave = -1;
b1b7ce0f	295	__s8 root_block = -1;
64108901 VY	296	__u32 cost = 0;
	297	__s16 priority = -1;
	298	__s8 state = -1;
	299	__s16 mode = -1;
6fdb4658	300	__u16 flags = 0;
64108901	301	struct rtattr *nest;
9262ccc3	302	int ret;
64108901	303
64108901 VY	304	while (argc > 0) {
	305	if (strcmp(*argv, "dev") == 0) {
	306	NEXT_ARG();
	307	d = *argv;
	308	} else if (strcmp(*argv, "guard") == 0) {
	309	NEXT_ARG();
9262ccc3 PM	310	bpdu_guard = parse_on_off("guard", *argv, &ret);
	311	if (ret)
	312	return ret;
64108901 VY	313	} else if (strcmp(*argv, "hairpin") == 0) {
64108901 VY	314	NEXT_ARG();
9262ccc3 PM	315	hairpin = parse_on_off("hairpin", *argv, &ret);
	316	if (ret)
	317	return ret;
64108901 VY	318	} else if (strcmp(*argv, "fastleave") == 0) {
64108901 VY	319	NEXT_ARG();
9262ccc3 PM	320	fast_leave = parse_on_off("fastleave", *argv, &ret);
	321	if (ret)
	322	return ret;
b1b7ce0f VY	323	} else if (strcmp(*argv, "root_block") == 0) {
b1b7ce0f VY	324	NEXT_ARG();
9262ccc3 PM	325	root_block = parse_on_off("root_block", *argv, &ret);
	326	if (ret)
	327	return ret;
f0f4ab60 VY	328	} else if (strcmp(*argv, "learning") == 0) {
f0f4ab60 VY	329	NEXT_ARG();
9262ccc3 PM	330	learning = parse_on_off("learning", *argv, &ret);
	331	if (ret)
	332	return ret;
674bb438 SF	333	} else if (strcmp(*argv, "learning_sync") == 0) {
674bb438 SF	334	NEXT_ARG();
9262ccc3 PM	335	learning_sync = parse_on_off("learning_sync", *argv, &ret);
	336	if (ret)
	337	return ret;
f0f4ab60 VY	338	} else if (strcmp(*argv, "flood") == 0) {
f0f4ab60 VY	339	NEXT_ARG();
9262ccc3 PM	340	flood = parse_on_off("flood", *argv, &ret);
	341	if (ret)
	342	return ret;
9208b4e7 NA	343	} else if (strcmp(*argv, "mcast_flood") == 0) {
9208b4e7 NA	344	NEXT_ARG();
9262ccc3 PM	345	mcast_flood = parse_on_off("mcast_flood", *argv, &ret);
	346	if (ret)
	347	return ret;
b5a754b1 TJ	348	} else if (strcmp(*argv, "mcast_to_unicast") == 0) {
b5a754b1 TJ	349	NEXT_ARG();
9262ccc3 PM	350	mcast_to_unicast = parse_on_off("mcast_to_unicast", *argv, &ret);
	351	if (ret)
	352	return ret;
a40d0827	353	} else if (strcmp(*argv, "cost") == 0) {
64108901 VY	354	NEXT_ARG();
64108901 VY	355	cost = atoi(*argv);
a40d0827	356	} else if (strcmp(*argv, "priority") == 0) {
64108901 VY	357	NEXT_ARG();
64108901 VY	358	priority = atoi(*argv);
a40d0827	359	} else if (strcmp(*argv, "state") == 0) {
64108901	360	NEXT_ARG();
6b8c871d	361	char *endptr;
62000e51	362	size_t nstates = ARRAY_SIZE(port_states);
df4b043f	363
6b8c871d AP	364	state = strtol(*argv, &endptr, 10);
	365	if (!(*argv != '\0' && endptr == '\0')) {
	366	for (state = 0; state < nstates; state++)
8d5d91fd	367	if (strcasecmp(port_states[state], *argv) == 0)
6b8c871d AP	368	break;
	369	if (state == nstates) {
	370	fprintf(stderr,
	371	"Error: invalid STP port state\n");
42ecedd4	372	return -1;
6b8c871d AP	373	}
6b8c871d AP	374	}
a40d0827	375	} else if (strcmp(*argv, "hwmode") == 0) {
64108901	376	NEXT_ARG();
a40d0827	377	flags = BRIDGE_FLAGS_SELF;
64108901 VY	378	if (strcmp(*argv, "vepa") == 0)
	379	mode = BRIDGE_MODE_VEPA;
	380	else if (strcmp(*argv, "veb") == 0)
	381	mode = BRIDGE_MODE_VEB;
	382	else {
	383	fprintf(stderr,
df4b043f	384	"Mode argument must be \"vepa\" or \"veb\".\n");
42ecedd4	385	return -1;
64108901	386	}
6fdb4658	387	} else if (strcmp(*argv, "self") == 0) {
22a98f51 RP	388	flags \|= BRIDGE_FLAGS_SELF;
	389	} else if (strcmp(*argv, "master") == 0) {
	390	flags \|= BRIDGE_FLAGS_MASTER;
41973a47 RP	391	} else if (strcmp(*argv, "neigh_suppress") == 0) {
41973a47 RP	392	NEXT_ARG();
9262ccc3 PM	393	neigh_suppress = parse_on_off("neigh_suppress", *argv, &ret);
	394	if (ret)
	395	return ret;
8cfde5c9 RP	396	} else if (strcmp(*argv, "vlan_tunnel") == 0) {
8cfde5c9 RP	397	NEXT_ARG();
9262ccc3 PM	398	vlan_tunnel = parse_on_off("vlan_tunnel", *argv, &ret);
	399	if (ret)
	400	return ret;
05001bcf NA	401	} else if (strcmp(*argv, "isolated") == 0) {
05001bcf NA	402	NEXT_ARG();
9262ccc3 PM	403	isolated = parse_on_off("isolated", *argv, &ret);
	404	if (ret)
	405	return ret;
d13d52d0 NA	406	} else if (strcmp(*argv, "backup_port") == 0) {
	407	NEXT_ARG();
	408	backup_port_idx = ll_name_to_index(*argv);
	409	if (!backup_port_idx) {
	410	fprintf(stderr, "Error: device %s does not exist\n",
	411	*argv);
	412	return -1;
	413	}
	414	} else if (strcmp(*argv, "nobackup_port") == 0) {
	415	backup_port_idx = 0;
64108901 VY	416	} else {
	417	usage();
	418	}
	419	argc--; argv++;
	420	}
	421	if (d == NULL) {
	422	fprintf(stderr, "Device is a required argument.\n");
42ecedd4	423	return -1;
64108901 VY	424	}
	425
	426
	427	req.ifm.ifi_index = ll_name_to_index(d);
	428	if (req.ifm.ifi_index == 0) {
	429	fprintf(stderr, "Cannot find bridge device \"%s\"\n", d);
42ecedd4	430	return -1;
64108901 VY	431	}
	432
	433	/* Nested PROTINFO attribute. Contains: port flags, cost, priority and
	434	* state.
	435	*/
	436	nest = addattr_nest(&req.n, sizeof(req),
	437	IFLA_PROTINFO \| NLA_F_NESTED);
	438	/* Flags first */
	439	if (bpdu_guard >= 0)
	440	addattr8(&req.n, sizeof(req), IFLA_BRPORT_GUARD, bpdu_guard);
	441	if (hairpin >= 0)
	442	addattr8(&req.n, sizeof(req), IFLA_BRPORT_MODE, hairpin);
	443	if (fast_leave >= 0)
	444	addattr8(&req.n, sizeof(req), IFLA_BRPORT_FAST_LEAVE,
	445	fast_leave);
b1b7ce0f VY	446	if (root_block >= 0)
b1b7ce0f VY	447	addattr8(&req.n, sizeof(req), IFLA_BRPORT_PROTECT, root_block);
f0f4ab60 VY	448	if (flood >= 0)
f0f4ab60 VY	449	addattr8(&req.n, sizeof(req), IFLA_BRPORT_UNICAST_FLOOD, flood);
9208b4e7 NA	450	if (mcast_flood >= 0)
	451	addattr8(&req.n, sizeof(req), IFLA_BRPORT_MCAST_FLOOD,
	452	mcast_flood);
b5a754b1 TJ	453	if (mcast_to_unicast >= 0)
	454	addattr8(&req.n, sizeof(req), IFLA_BRPORT_MCAST_TO_UCAST,
	455	mcast_to_unicast);
f0f4ab60 VY	456	if (learning >= 0)
f0f4ab60 VY	457	addattr8(&req.n, sizeof(req), IFLA_BRPORT_LEARNING, learning);
674bb438 SF	458	if (learning_sync >= 0)
	459	addattr8(&req.n, sizeof(req), IFLA_BRPORT_LEARNING_SYNC,
	460	learning_sync);
64108901 VY	461
	462	if (cost > 0)
	463	addattr32(&req.n, sizeof(req), IFLA_BRPORT_COST, cost);
	464
	465	if (priority >= 0)
	466	addattr16(&req.n, sizeof(req), IFLA_BRPORT_PRIORITY, priority);
	467
	468	if (state >= 0)
	469	addattr8(&req.n, sizeof(req), IFLA_BRPORT_STATE, state);
	470
41973a47 RP	471	if (neigh_suppress != -1)
	472	addattr8(&req.n, sizeof(req), IFLA_BRPORT_NEIGH_SUPPRESS,
	473	neigh_suppress);
8cfde5c9 RP	474	if (vlan_tunnel != -1)
	475	addattr8(&req.n, sizeof(req), IFLA_BRPORT_VLAN_TUNNEL,
	476	vlan_tunnel);
05001bcf NA	477	if (isolated != -1)
05001bcf NA	478	addattr8(&req.n, sizeof(req), IFLA_BRPORT_ISOLATED, isolated);
41973a47	479
d13d52d0 NA	480	if (backup_port_idx != -1)
	481	addattr32(&req.n, sizeof(req), IFLA_BRPORT_BACKUP_PORT,
	482	backup_port_idx);
	483
64108901 VY	484	addattr_nest_end(&req.n, nest);
64108901 VY	485
6fdb4658 RP	486	/* IFLA_AF_SPEC nested attribute. Contains IFLA_BRIDGE_FLAGS that
	487	* designates master or self operation and IFLA_BRIDGE_MODE
	488	* for hw 'vepa' or 'veb' operation modes. The hwmodes are
	489	* only valid in 'self' mode on some devices so far.
64108901	490	*/
6fdb4658	491	if (mode >= 0 \|\| flags > 0) {
64108901 VY	492	nest = addattr_nest(&req.n, sizeof(req), IFLA_AF_SPEC);
64108901 VY	493
6fdb4658 RP	494	if (flags > 0)
6fdb4658 RP	495	addattr16(&req.n, sizeof(req), IFLA_BRIDGE_FLAGS, flags);
64108901 VY	496
	497	if (mode >= 0)
	498	addattr16(&req.n, sizeof(req), IFLA_BRIDGE_MODE, mode);
	499
	500	addattr_nest_end(&req.n, nest);
	501	}
	502
86bf43c7	503	if (rtnl_talk(&rth, &req.n, NULL) < 0)
42ecedd4	504	return -1;
64108901 VY	505
	506	return 0;
	507	}
	508
	509	static int brlink_show(int argc, char **argv)
	510	{
	511	char *filter_dev = NULL;
	512
	513	while (argc > 0) {
	514	if (strcmp(*argv, "dev") == 0) {
	515	NEXT_ARG();
	516	if (filter_dev)
	517	duparg("dev", *argv);
	518	filter_dev = *argv;
	519	}
	520	argc--; argv++;
	521	}
	522
	523	if (filter_dev) {
fe99adbc SP	524	filter_index = ll_name_to_index(filter_dev);
	525	if (!filter_index)
	526	return nodev(filter_dev);
64108901 VY	527	}
64108901 VY	528
fab9a18a	529	if (show_details) {
31ae2912	530	if (rtnl_linkdump_req_filter(&rth, PF_BRIDGE,
fab9a18a RM	531	(compress_vlans ?
	532	RTEXT_FILTER_BRVLAN_COMPRESSED :
	533	RTEXT_FILTER_BRVLAN)) < 0) {
	534	perror("Cannon send dump request");
	535	exit(1);
	536	}
	537	} else {
31ae2912	538	if (rtnl_linkdump_req(&rth, PF_BRIDGE) < 0) {
fab9a18a RM	539	perror("Cannon send dump request");
	540	exit(1);
	541	}
64108901 VY	542	}
64108901 VY	543
f32e4977	544	new_json_obj(json);
64108901 VY	545	if (rtnl_dump_filter(&rth, print_linkinfo, stdout) < 0) {
	546	fprintf(stderr, "Dump terminated\n");
	547	exit(1);
	548	}
f32e4977 SH	549
	550	delete_json_obj();
	551	fflush(stdout);
64108901 VY	552	return 0;
	553	}
	554
	555	int do_link(int argc, char **argv)
	556	{
	557	ll_init_map(&rth);
	558	if (argc > 0) {
	559	if (matches(*argv, "set") == 0 \|\|
	560	matches(*argv, "change") == 0)
	561	return brlink_modify(argc-1, argv+1);
	562	if (matches(*argv, "show") == 0 \|\|
	563	matches(*argv, "lst") == 0 \|\|
	564	matches(*argv, "list") == 0)
	565	return brlink_show(argc-1, argv+1);
	566	if (matches(*argv, "help") == 0)
	567	usage();
	568	} else
	569	return brlink_show(0, NULL);
	570
	571	fprintf(stderr, "Command \"%s\" is unknown, try \"bridge link help\".\n", *argv);
	572	exit(-1);
	573	}