[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 "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",
};

extern char *if_indextoname(unsigned int __ifindex, char *__ifname);

static void print_link_flags(FILE *fp, unsigned int flags)
{
	fprintf(fp, "<");
	if (flags & IFF_UP && !(flags & IFF_RUNNING))
		fprintf(fp, "NO-CARRIER%s", flags ? "," : "");
	flags &= ~IFF_RUNNING;
#define _PF(f) if (flags&IFF_##f) { \
		  flags &= ~IFF_##f ; \
		  fprintf(fp, #f "%s", flags ? "," : ""); }
	_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)
		fprintf(fp, "%x", flags);
	fprintf(fp, "> ");
}

static const char *oper_states[] = {
	"UNKNOWN", "NOTPRESENT", "DOWN", "LOWERLAYERDOWN",
	"TESTING", "DORMANT",	 "UP"
};

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

static void print_operstate(FILE *f, __u8 state)
{
	if (state >= ARRAY_SIZE(oper_states))
		fprintf(f, "state %#x ", state);
	else
		fprintf(f, "state %s ", oper_states[state]);
}

static void print_portstate(FILE *f, __u8 state)
{
	if (state <= BR_STATE_BLOCKING)
		fprintf(f, "state %s ", port_states[state]);
	else
		fprintf(f, "state (%d) ", state);
}

static void print_onoff(FILE *f, char *flag, __u8 val)
{
	fprintf(f, "%s %s ", flag, val ? "on" : "off");
}

static void print_hwmode(FILE *f, __u16 mode)
{
	if (mode >= ARRAY_SIZE(hw_mode))
		fprintf(f, "hwmode %#hx ", mode);
	else
		fprintf(f, "hwmode %s ", hw_mode[mode]);
}

int print_linkinfo(const struct sockaddr_nl *who,
		   struct nlmsghdr *n, void *arg)
{
	FILE *fp = arg;
	int len = n->nlmsg_len;
	struct ifinfomsg *ifi = NLMSG_DATA(n);
	struct rtattr *tb[IFLA_MAX+1];
	char b1[IFNAMSIZ];

	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);

	if (tb[IFLA_IFNAME] == NULL) {
		fprintf(stderr, "BUG: nil ifname\n");
		return -1;
	}

	if (n->nlmsg_type == RTM_DELLINK)
		fprintf(fp, "Deleted ");

	fprintf(fp, "%d: %s ", ifi->ifi_index,
		tb[IFLA_IFNAME] ? rta_getattr_str(tb[IFLA_IFNAME]) : "<nil>");

	if (tb[IFLA_OPERSTATE])
		print_operstate(fp, rta_getattr_u8(tb[IFLA_OPERSTATE]));

	if (tb[IFLA_LINK]) {
		SPRINT_BUF(b1);
		int iflink = rta_getattr_u32(tb[IFLA_LINK]);

		if (iflink == 0)
			fprintf(fp, "@NONE: ");
		else
			fprintf(fp, "@%s: ",
				if_indextoname(iflink, b1));
	} else
		fprintf(fp, ": ");

	print_link_flags(fp, ifi->ifi_flags);

	if (tb[IFLA_MTU])
		fprintf(fp, "mtu %u ", rta_getattr_u32(tb[IFLA_MTU]));

	if (tb[IFLA_MASTER])
		fprintf(fp, "master %s ",
			if_indextoname(rta_getattr_u32(tb[IFLA_MASTER]), b1));

	if (tb[IFLA_PROTINFO]) {
		if (tb[IFLA_PROTINFO]->rta_type & NLA_F_NESTED) {
			struct rtattr *prtb[IFLA_BRPORT_MAX+1];

			parse_rtattr_nested(prtb, IFLA_BRPORT_MAX,
					    tb[IFLA_PROTINFO]);

			if (prtb[IFLA_BRPORT_STATE])
				print_portstate(fp,
						rta_getattr_u8(prtb[IFLA_BRPORT_STATE]));
			if (prtb[IFLA_BRPORT_PRIORITY])
				fprintf(fp, "priority %hu ",
					rta_getattr_u16(prtb[IFLA_BRPORT_PRIORITY]));
			if (prtb[IFLA_BRPORT_COST])
				fprintf(fp, "cost %u ",
					rta_getattr_u32(prtb[IFLA_BRPORT_COST]));

			if (show_details) {
				fprintf(fp, "%s    ", _SL_);

				if (prtb[IFLA_BRPORT_MODE])
					print_onoff(fp, "hairpin",
						    rta_getattr_u8(prtb[IFLA_BRPORT_MODE]));
				if (prtb[IFLA_BRPORT_GUARD])
					print_onoff(fp, "guard",
						    rta_getattr_u8(prtb[IFLA_BRPORT_GUARD]));
				if (prtb[IFLA_BRPORT_PROTECT])
					print_onoff(fp, "root_block",
						    rta_getattr_u8(prtb[IFLA_BRPORT_PROTECT]));
				if (prtb[IFLA_BRPORT_FAST_LEAVE])
					print_onoff(fp, "fastleave",
						    rta_getattr_u8(prtb[IFLA_BRPORT_FAST_LEAVE]));
				if (prtb[IFLA_BRPORT_LEARNING])
					print_onoff(fp, "learning",
						    rta_getattr_u8(prtb[IFLA_BRPORT_LEARNING]));
				if (prtb[IFLA_BRPORT_LEARNING_SYNC])
					print_onoff(fp, "learning_sync",
						    rta_getattr_u8(prtb[IFLA_BRPORT_LEARNING_SYNC]));
				if (prtb[IFLA_BRPORT_UNICAST_FLOOD])
					print_onoff(fp, "flood",
						    rta_getattr_u8(prtb[IFLA_BRPORT_UNICAST_FLOOD]));
				if (prtb[IFLA_BRPORT_MCAST_FLOOD])
					print_onoff(fp, "mcast_flood",
						    rta_getattr_u8(prtb[IFLA_BRPORT_MCAST_FLOOD]));
				if (prtb[IFLA_BRPORT_NEIGH_SUPPRESS])
					print_onoff(fp, "neigh_suppress",
						    rta_getattr_u8(prtb[IFLA_BRPORT_NEIGH_SUPPRESS]));
				if (prtb[IFLA_BRPORT_VLAN_TUNNEL])
					print_onoff(fp, "vlan_tunnel",
						    rta_getattr_u8(prtb[IFLA_BRPORT_VLAN_TUNNEL]));
			}
		} else
			print_portstate(fp, rta_getattr_u8(tb[IFLA_PROTINFO]));
	}

	if (tb[IFLA_AF_SPEC]) {
		/* This is reported by HW devices that have some bridging
		 * capabilities.
		 */
		struct rtattr *aftb[IFLA_BRIDGE_MAX+1];

		parse_rtattr_nested(aftb, IFLA_BRIDGE_MAX, tb[IFLA_AF_SPEC]);

		if (aftb[IFLA_BRIDGE_MODE])
			print_hwmode(fp, rta_getattr_u16(aftb[IFLA_BRIDGE_MODE]));
		if (show_details) {
			if (aftb[IFLA_BRIDGE_VLAN_INFO]) {
				fprintf(fp, "\n");
				print_vlan_info(fp, tb[IFLA_AF_SPEC],
						ifi->ifi_index);
			}
		}
	}

	fprintf(fp, "\n");
	fflush(fp);
	return 0;
}

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

static bool on_off(char *arg, __s8 *attr, char *val)
{
	if (strcmp(val, "on") == 0)
		*attr = 1;
	else if (strcmp(val, "off") == 0)
		*attr = 0;
	else {
		fprintf(stderr,
			"Error: argument of \"%s\" must be \"on\" or \"off\"\n",
			arg);
		return false;
	}

	return true;
}

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;
	__s8 neigh_suppress = -1;
	__s8 learning = -1;
	__s8 learning_sync = -1;
	__s8 flood = -1;
	__s8 vlan_tunnel = -1;
	__s8 mcast_flood = -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;

	while (argc > 0) {
		if (strcmp(*argv, "dev") == 0) {
			NEXT_ARG();
			d = *argv;
		} else if (strcmp(*argv, "guard") == 0) {
			NEXT_ARG();
			if (!on_off("guard", &bpdu_guard, *argv))
				return -1;
		} else if (strcmp(*argv, "hairpin") == 0) {
			NEXT_ARG();
			if (!on_off("hairping", &hairpin, *argv))
				return -1;
		} else if (strcmp(*argv, "fastleave") == 0) {
			NEXT_ARG();
			if (!on_off("fastleave", &fast_leave, *argv))
				return -1;
		} else if (strcmp(*argv, "root_block") == 0) {
			NEXT_ARG();
			if (!on_off("root_block", &root_block, *argv))
				return -1;
		} else if (strcmp(*argv, "learning") == 0) {
			NEXT_ARG();
			if (!on_off("learning", &learning, *argv))
				return -1;
		} else if (strcmp(*argv, "learning_sync") == 0) {
			NEXT_ARG();
			if (!on_off("learning_sync", &learning_sync, *argv))
				return -1;
		} else if (strcmp(*argv, "flood") == 0) {
			NEXT_ARG();
			if (!on_off("flood", &flood, *argv))
				return -1;
		} else if (strcmp(*argv, "mcast_flood") == 0) {
			NEXT_ARG();
			if (!on_off("mcast_flood", &mcast_flood, *argv))
				return -1;
		} 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 (strcmp(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();
			if (!on_off("neigh_suppress", &neigh_suppress,
				    *argv))
				return -1;
		} else if (strcmp(*argv, "vlan_tunnel") == 0) {
			NEXT_ARG();
			if (!on_off("vlan_tunnel", &vlan_tunnel,
				    *argv))
				return -1;
		} 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 (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);

	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) {
		if ((filter_index = ll_name_to_index(filter_dev)) == 0) {
			fprintf(stderr, "Cannot find device \"%s\"\n",
				filter_dev);
			return -1;
		}
	}

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

	if (rtnl_dump_filter(&rth, print_linkinfo, stdout) < 0) {
		fprintf(stderr, "Dump terminated\n");
		exit(1);
	}
	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
64108901	15	#include "libnetlink.h"
d04bc300 SH	16	#include "utils.h"
	17	#include "br_common.h"
	18
9dca899b	19	static unsigned int filter_index;
64108901	20
d04bc300 SH	21	static const char *port_states[] = {
	22	[BR_STATE_DISABLED] = "disabled",
	23	[BR_STATE_LISTENING] = "listening",
	24	[BR_STATE_LEARNING] = "learning",
	25	[BR_STATE_FORWARDING] = "forwarding",
	26	[BR_STATE_BLOCKING] = "blocking",
	27	};
	28
df4b043f	29	extern char if_indextoname(unsigned int __ifindex, char __ifname);
d04bc300	30
df4b043f	31	static void print_link_flags(FILE *fp, unsigned int flags)
d04bc300 SH	32	{
	33	fprintf(fp, "<");
	34	if (flags & IFF_UP && !(flags & IFF_RUNNING))
	35	fprintf(fp, "NO-CARRIER%s", flags ? "," : "");
	36	flags &= ~IFF_RUNNING;
	37	#define _PF(f) if (flags&IFF_##f) { \
df4b043f SH	38	flags &= ~IFF_##f ; \
df4b043f SH	39	fprintf(fp, #f "%s", flags ? "," : ""); }
d04bc300 SH	40	_PF(LOOPBACK);
	41	_PF(BROADCAST);
	42	_PF(POINTOPOINT);
	43	_PF(MULTICAST);
	44	_PF(NOARP);
	45	_PF(ALLMULTI);
	46	_PF(PROMISC);
	47	_PF(MASTER);
	48	_PF(SLAVE);
	49	_PF(DEBUG);
	50	_PF(DYNAMIC);
	51	_PF(AUTOMEDIA);
	52	_PF(PORTSEL);
	53	_PF(NOTRAILERS);
	54	_PF(UP);
	55	_PF(LOWER_UP);
	56	_PF(DORMANT);
	57	_PF(ECHO);
	58	#undef _PF
df4b043f	59	if (flags)
d04bc300 SH	60	fprintf(fp, "%x", flags);
	61	fprintf(fp, "> ");
	62	}
	63
	64	static const char *oper_states[] = {
38df7ac9	65	"UNKNOWN", "NOTPRESENT", "DOWN", "LOWERLAYERDOWN",
d04bc300 SH	66	"TESTING", "DORMANT", "UP"
	67	};
	68
b1b7ce0f VY	69	static const char *hw_mode[] = {"VEB", "VEPA"};
b1b7ce0f VY	70
d04bc300 SH	71	static void print_operstate(FILE *f, __u8 state)
d04bc300 SH	72	{
df4b043f	73	if (state >= ARRAY_SIZE(oper_states))
d04bc300 SH	74	fprintf(f, "state %#x ", state);
	75	else
	76	fprintf(f, "state %s ", oper_states[state]);
	77	}
	78
b1b7ce0f VY	79	static void print_portstate(FILE *f, __u8 state)
	80	{
	81	if (state <= BR_STATE_BLOCKING)
	82	fprintf(f, "state %s ", port_states[state]);
	83	else
	84	fprintf(f, "state (%d) ", state);
	85	}
	86
	87	static void print_onoff(FILE f, char flag, __u8 val)
	88	{
	89	fprintf(f, "%s %s ", flag, val ? "on" : "off");
	90	}
	91
	92	static void print_hwmode(FILE *f, __u16 mode)
	93	{
df4b043f	94	if (mode >= ARRAY_SIZE(hw_mode))
b1b7ce0f VY	95	fprintf(f, "hwmode %#hx ", mode);
	96	else
	97	fprintf(f, "hwmode %s ", hw_mode[mode]);
	98	}
	99
d04bc300 SH	100	int print_linkinfo(const struct sockaddr_nl *who,
	101	struct nlmsghdr n, void arg)
	102	{
	103	FILE *fp = arg;
	104	int len = n->nlmsg_len;
	105	struct ifinfomsg *ifi = NLMSG_DATA(n);
df4b043f	106	struct rtattr *tb[IFLA_MAX+1];
d04bc300 SH	107	char b1[IFNAMSIZ];
	108
	109	len -= NLMSG_LENGTH(sizeof(*ifi));
	110	if (len < 0) {
	111	fprintf(stderr, "Message too short!\n");
	112	return -1;
df4b043f	113	}
d04bc300 SH	114
	115	if (!(ifi->ifi_family == AF_BRIDGE \|\| ifi->ifi_family == AF_UNSPEC))
	116	return 0;
	117
64108901 VY	118	if (filter_index && filter_index != ifi->ifi_index)
	119	return 0;
	120
b1b7ce0f	121	parse_rtattr_flags(tb, IFLA_MAX, IFLA_RTA(ifi), len, NLA_F_NESTED);
d04bc300 SH	122
	123	if (tb[IFLA_IFNAME] == NULL) {
	124	fprintf(stderr, "BUG: nil ifname\n");
	125	return -1;
	126	}
	127
	128	if (n->nlmsg_type == RTM_DELLINK)
	129	fprintf(fp, "Deleted ");
	130
	131	fprintf(fp, "%d: %s ", ifi->ifi_index,
1465db1a	132	tb[IFLA_IFNAME] ? rta_getattr_str(tb[IFLA_IFNAME]) : "<nil>");
d04bc300	133
38df7ac9	134	if (tb[IFLA_OPERSTATE])
1465db1a	135	print_operstate(fp, rta_getattr_u8(tb[IFLA_OPERSTATE]));
38df7ac9	136
d04bc300 SH	137	if (tb[IFLA_LINK]) {
d04bc300 SH	138	SPRINT_BUF(b1);
1465db1a	139	int iflink = rta_getattr_u32(tb[IFLA_LINK]);
df4b043f	140
d04bc300 SH	141	if (iflink == 0)
d04bc300 SH	142	fprintf(fp, "@NONE: ");
1465db1a	143	else
38df7ac9	144	fprintf(fp, "@%s: ",
d04bc300	145	if_indextoname(iflink, b1));
1465db1a	146	} else
d04bc300	147	fprintf(fp, ": ");
d04bc300 SH	148
	149	print_link_flags(fp, ifi->ifi_flags);
	150
	151	if (tb[IFLA_MTU])
1465db1a	152	fprintf(fp, "mtu %u ", rta_getattr_u32(tb[IFLA_MTU]));
d04bc300	153
1465db1a	154	if (tb[IFLA_MASTER])
38df7ac9	155	fprintf(fp, "master %s ",
1465db1a	156	if_indextoname(rta_getattr_u32(tb[IFLA_MASTER]), b1));
d04bc300 SH	157
d04bc300 SH	158	if (tb[IFLA_PROTINFO]) {
b1b7ce0f VY	159	if (tb[IFLA_PROTINFO]->rta_type & NLA_F_NESTED) {
	160	struct rtattr *prtb[IFLA_BRPORT_MAX+1];
	161
	162	parse_rtattr_nested(prtb, IFLA_BRPORT_MAX,
	163	tb[IFLA_PROTINFO]);
	164
	165	if (prtb[IFLA_BRPORT_STATE])
	166	print_portstate(fp,
	167	rta_getattr_u8(prtb[IFLA_BRPORT_STATE]));
	168	if (prtb[IFLA_BRPORT_PRIORITY])
	169	fprintf(fp, "priority %hu ",
	170	rta_getattr_u16(prtb[IFLA_BRPORT_PRIORITY]));
	171	if (prtb[IFLA_BRPORT_COST])
	172	fprintf(fp, "cost %u ",
	173	rta_getattr_u32(prtb[IFLA_BRPORT_COST]));
4cd20da1 SH	174
	175	if (show_details) {
	176	fprintf(fp, "%s ", _SL_);
	177
	178	if (prtb[IFLA_BRPORT_MODE])
	179	print_onoff(fp, "hairpin",
	180	rta_getattr_u8(prtb[IFLA_BRPORT_MODE]));
	181	if (prtb[IFLA_BRPORT_GUARD])
	182	print_onoff(fp, "guard",
	183	rta_getattr_u8(prtb[IFLA_BRPORT_GUARD]));
	184	if (prtb[IFLA_BRPORT_PROTECT])
	185	print_onoff(fp, "root_block",
	186	rta_getattr_u8(prtb[IFLA_BRPORT_PROTECT]));
	187	if (prtb[IFLA_BRPORT_FAST_LEAVE])
	188	print_onoff(fp, "fastleave",
	189	rta_getattr_u8(prtb[IFLA_BRPORT_FAST_LEAVE]));
f0f4ab60 VY	190	if (prtb[IFLA_BRPORT_LEARNING])
	191	print_onoff(fp, "learning",
	192	rta_getattr_u8(prtb[IFLA_BRPORT_LEARNING]));
674bb438 SF	193	if (prtb[IFLA_BRPORT_LEARNING_SYNC])
	194	print_onoff(fp, "learning_sync",
	195	rta_getattr_u8(prtb[IFLA_BRPORT_LEARNING_SYNC]));
f0f4ab60 VY	196	if (prtb[IFLA_BRPORT_UNICAST_FLOOD])
	197	print_onoff(fp, "flood",
	198	rta_getattr_u8(prtb[IFLA_BRPORT_UNICAST_FLOOD]));
9208b4e7 NA	199	if (prtb[IFLA_BRPORT_MCAST_FLOOD])
	200	print_onoff(fp, "mcast_flood",
	201	rta_getattr_u8(prtb[IFLA_BRPORT_MCAST_FLOOD]));
41973a47 RP	202	if (prtb[IFLA_BRPORT_NEIGH_SUPPRESS])
	203	print_onoff(fp, "neigh_suppress",
	204	rta_getattr_u8(prtb[IFLA_BRPORT_NEIGH_SUPPRESS]));
8cfde5c9 RP	205	if (prtb[IFLA_BRPORT_VLAN_TUNNEL])
	206	print_onoff(fp, "vlan_tunnel",
	207	rta_getattr_u8(prtb[IFLA_BRPORT_VLAN_TUNNEL]));
4cd20da1	208	}
b1b7ce0f VY	209	} else
b1b7ce0f VY	210	print_portstate(fp, rta_getattr_u8(tb[IFLA_PROTINFO]));
d04bc300 SH	211	}
d04bc300 SH	212
b1b7ce0f VY	213	if (tb[IFLA_AF_SPEC]) {
	214	/* This is reported by HW devices that have some bridging
	215	* capabilities.
	216	*/
	217	struct rtattr *aftb[IFLA_BRIDGE_MAX+1];
	218
	219	parse_rtattr_nested(aftb, IFLA_BRIDGE_MAX, tb[IFLA_AF_SPEC]);
	220
a40d0827 JF	221	if (aftb[IFLA_BRIDGE_MODE])
a40d0827 JF	222	print_hwmode(fp, rta_getattr_u16(aftb[IFLA_BRIDGE_MODE]));
52fd1fe3 RM	223	if (show_details) {
	224	if (aftb[IFLA_BRIDGE_VLAN_INFO]) {
	225	fprintf(fp, "\n");
	226	print_vlan_info(fp, tb[IFLA_AF_SPEC],
	227	ifi->ifi_index);
	228	}
	229	}
b1b7ce0f	230	}
d04bc300 SH	231
	232	fprintf(fp, "\n");
	233	fflush(fp);
	234	return 0;
	235	}
64108901 VY	236
	237	static void usage(void)
	238	{
	239	fprintf(stderr, "Usage: bridge link set dev DEV [ cost COST ] [ priority PRIO ] [ state STATE ]\n");
	240	fprintf(stderr, " [ guard {on \| off} ]\n");
df4b043f	241	fprintf(stderr, " [ hairpin {on \| off} ]\n");
64108901 VY	242	fprintf(stderr, " [ fastleave {on \| off} ]\n");
64108901 VY	243	fprintf(stderr, " [ root_block {on \| off} ]\n");
f0f4ab60	244	fprintf(stderr, " [ learning {on \| off} ]\n");
674bb438	245	fprintf(stderr, " [ learning_sync {on \| off} ]\n");
f0f4ab60	246	fprintf(stderr, " [ flood {on \| off} ]\n");
9208b4e7	247	fprintf(stderr, " [ mcast_flood {on \| off} ]\n");
8cfde5c9 RP	248	fprintf(stderr, " [ neigh_suppress {on \| off} ]\n");
8cfde5c9 RP	249	fprintf(stderr, " [ vlan_tunnel {on \| off} ]\n");
64108901	250	fprintf(stderr, " [ hwmode {vepa \| veb} ]\n");
22a98f51	251	fprintf(stderr, " [ self ] [ master ]\n");
64108901 VY	252	fprintf(stderr, " bridge link show [dev DEV]\n");
	253	exit(-1);
	254	}
	255
	256	static bool on_off(char arg, __s8 attr, char *val)
	257	{
	258	if (strcmp(val, "on") == 0)
	259	*attr = 1;
	260	else if (strcmp(val, "off") == 0)
	261	*attr = 0;
	262	else {
	263	fprintf(stderr,
	264	"Error: argument of \"%s\" must be \"on\" or \"off\"\n",
	265	arg);
	266	return false;
	267	}
	268
	269	return true;
	270	}
	271
	272	static int brlink_modify(int argc, char **argv)
	273	{
	274	struct {
	275	struct nlmsghdr n;
	276	struct ifinfomsg ifm;
	277	char buf[512];
d17b136f PS	278	} req = {
	279	.n.nlmsg_len = NLMSG_LENGTH(sizeof(struct ifinfomsg)),
	280	.n.nlmsg_flags = NLM_F_REQUEST,
	281	.n.nlmsg_type = RTM_SETLINK,
	282	.ifm.ifi_family = PF_BRIDGE,
	283	};
64108901	284	char *d = NULL;
41973a47	285	__s8 neigh_suppress = -1;
f0f4ab60	286	__s8 learning = -1;
674bb438	287	__s8 learning_sync = -1;
f0f4ab60	288	__s8 flood = -1;
8cfde5c9	289	__s8 vlan_tunnel = -1;
9208b4e7	290	__s8 mcast_flood = -1;
64108901 VY	291	__s8 hairpin = -1;
	292	__s8 bpdu_guard = -1;
	293	__s8 fast_leave = -1;
b1b7ce0f	294	__s8 root_block = -1;
64108901 VY	295	__u32 cost = 0;
	296	__s16 priority = -1;
	297	__s8 state = -1;
	298	__s16 mode = -1;
6fdb4658	299	__u16 flags = 0;
64108901 VY	300	struct rtattr *nest;
64108901 VY	301
64108901 VY	302	while (argc > 0) {
	303	if (strcmp(*argv, "dev") == 0) {
	304	NEXT_ARG();
	305	d = *argv;
	306	} else if (strcmp(*argv, "guard") == 0) {
	307	NEXT_ARG();
	308	if (!on_off("guard", &bpdu_guard, *argv))
42ecedd4	309	return -1;
64108901 VY	310	} else if (strcmp(*argv, "hairpin") == 0) {
	311	NEXT_ARG();
	312	if (!on_off("hairping", &hairpin, *argv))
42ecedd4	313	return -1;
64108901 VY	314	} else if (strcmp(*argv, "fastleave") == 0) {
	315	NEXT_ARG();
	316	if (!on_off("fastleave", &fast_leave, *argv))
42ecedd4	317	return -1;
b1b7ce0f VY	318	} else if (strcmp(*argv, "root_block") == 0) {
	319	NEXT_ARG();
	320	if (!on_off("root_block", &root_block, *argv))
42ecedd4	321	return -1;
f0f4ab60 VY	322	} else if (strcmp(*argv, "learning") == 0) {
	323	NEXT_ARG();
	324	if (!on_off("learning", &learning, *argv))
42ecedd4	325	return -1;
674bb438 SF	326	} else if (strcmp(*argv, "learning_sync") == 0) {
	327	NEXT_ARG();
	328	if (!on_off("learning_sync", &learning_sync, *argv))
42ecedd4	329	return -1;
f0f4ab60 VY	330	} else if (strcmp(*argv, "flood") == 0) {
	331	NEXT_ARG();
	332	if (!on_off("flood", &flood, *argv))
42ecedd4	333	return -1;
9208b4e7 NA	334	} else if (strcmp(*argv, "mcast_flood") == 0) {
	335	NEXT_ARG();
	336	if (!on_off("mcast_flood", &mcast_flood, *argv))
	337	return -1;
a40d0827	338	} else if (strcmp(*argv, "cost") == 0) {
64108901 VY	339	NEXT_ARG();
64108901 VY	340	cost = atoi(*argv);
a40d0827	341	} else if (strcmp(*argv, "priority") == 0) {
64108901 VY	342	NEXT_ARG();
64108901 VY	343	priority = atoi(*argv);
a40d0827	344	} else if (strcmp(*argv, "state") == 0) {
64108901	345	NEXT_ARG();
6b8c871d	346	char *endptr;
62000e51	347	size_t nstates = ARRAY_SIZE(port_states);
df4b043f	348
6b8c871d AP	349	state = strtol(*argv, &endptr, 10);
	350	if (!(*argv != '\0' && endptr == '\0')) {
	351	for (state = 0; state < nstates; state++)
	352	if (strcmp(port_states[state], *argv) == 0)
	353	break;
	354	if (state == nstates) {
	355	fprintf(stderr,
	356	"Error: invalid STP port state\n");
42ecedd4	357	return -1;
6b8c871d AP	358	}
6b8c871d AP	359	}
a40d0827	360	} else if (strcmp(*argv, "hwmode") == 0) {
64108901	361	NEXT_ARG();
a40d0827	362	flags = BRIDGE_FLAGS_SELF;
64108901 VY	363	if (strcmp(*argv, "vepa") == 0)
	364	mode = BRIDGE_MODE_VEPA;
	365	else if (strcmp(*argv, "veb") == 0)
	366	mode = BRIDGE_MODE_VEB;
	367	else {
	368	fprintf(stderr,
df4b043f	369	"Mode argument must be \"vepa\" or \"veb\".\n");
42ecedd4	370	return -1;
64108901	371	}
6fdb4658	372	} else if (strcmp(*argv, "self") == 0) {
22a98f51 RP	373	flags \|= BRIDGE_FLAGS_SELF;
	374	} else if (strcmp(*argv, "master") == 0) {
	375	flags \|= BRIDGE_FLAGS_MASTER;
41973a47 RP	376	} else if (strcmp(*argv, "neigh_suppress") == 0) {
	377	NEXT_ARG();
	378	if (!on_off("neigh_suppress", &neigh_suppress,
	379	*argv))
	380	return -1;
8cfde5c9 RP	381	} else if (strcmp(*argv, "vlan_tunnel") == 0) {
	382	NEXT_ARG();
	383	if (!on_off("vlan_tunnel", &vlan_tunnel,
	384	*argv))
	385	return -1;
64108901 VY	386	} else {
	387	usage();
	388	}
	389	argc--; argv++;
	390	}
	391	if (d == NULL) {
	392	fprintf(stderr, "Device is a required argument.\n");
42ecedd4	393	return -1;
64108901 VY	394	}
	395
	396
	397	req.ifm.ifi_index = ll_name_to_index(d);
	398	if (req.ifm.ifi_index == 0) {
	399	fprintf(stderr, "Cannot find bridge device \"%s\"\n", d);
42ecedd4	400	return -1;
64108901 VY	401	}
	402
	403	/* Nested PROTINFO attribute. Contains: port flags, cost, priority and
	404	* state.
	405	*/
	406	nest = addattr_nest(&req.n, sizeof(req),
	407	IFLA_PROTINFO \| NLA_F_NESTED);
	408	/* Flags first */
	409	if (bpdu_guard >= 0)
	410	addattr8(&req.n, sizeof(req), IFLA_BRPORT_GUARD, bpdu_guard);
	411	if (hairpin >= 0)
	412	addattr8(&req.n, sizeof(req), IFLA_BRPORT_MODE, hairpin);
	413	if (fast_leave >= 0)
	414	addattr8(&req.n, sizeof(req), IFLA_BRPORT_FAST_LEAVE,
	415	fast_leave);
b1b7ce0f VY	416	if (root_block >= 0)
b1b7ce0f VY	417	addattr8(&req.n, sizeof(req), IFLA_BRPORT_PROTECT, root_block);
f0f4ab60 VY	418	if (flood >= 0)
f0f4ab60 VY	419	addattr8(&req.n, sizeof(req), IFLA_BRPORT_UNICAST_FLOOD, flood);
9208b4e7 NA	420	if (mcast_flood >= 0)
	421	addattr8(&req.n, sizeof(req), IFLA_BRPORT_MCAST_FLOOD,
	422	mcast_flood);
f0f4ab60 VY	423	if (learning >= 0)
f0f4ab60 VY	424	addattr8(&req.n, sizeof(req), IFLA_BRPORT_LEARNING, learning);
674bb438 SF	425	if (learning_sync >= 0)
	426	addattr8(&req.n, sizeof(req), IFLA_BRPORT_LEARNING_SYNC,
	427	learning_sync);
64108901 VY	428
	429	if (cost > 0)
	430	addattr32(&req.n, sizeof(req), IFLA_BRPORT_COST, cost);
	431
	432	if (priority >= 0)
	433	addattr16(&req.n, sizeof(req), IFLA_BRPORT_PRIORITY, priority);
	434
	435	if (state >= 0)
	436	addattr8(&req.n, sizeof(req), IFLA_BRPORT_STATE, state);
	437
41973a47 RP	438	if (neigh_suppress != -1)
	439	addattr8(&req.n, sizeof(req), IFLA_BRPORT_NEIGH_SUPPRESS,
	440	neigh_suppress);
8cfde5c9 RP	441	if (vlan_tunnel != -1)
	442	addattr8(&req.n, sizeof(req), IFLA_BRPORT_VLAN_TUNNEL,
	443	vlan_tunnel);
41973a47	444
64108901 VY	445	addattr_nest_end(&req.n, nest);
64108901 VY	446
6fdb4658 RP	447	/* IFLA_AF_SPEC nested attribute. Contains IFLA_BRIDGE_FLAGS that
	448	* designates master or self operation and IFLA_BRIDGE_MODE
	449	* for hw 'vepa' or 'veb' operation modes. The hwmodes are
	450	* only valid in 'self' mode on some devices so far.
64108901	451	*/
6fdb4658	452	if (mode >= 0 \|\| flags > 0) {
64108901 VY	453	nest = addattr_nest(&req.n, sizeof(req), IFLA_AF_SPEC);
64108901 VY	454
6fdb4658 RP	455	if (flags > 0)
6fdb4658 RP	456	addattr16(&req.n, sizeof(req), IFLA_BRIDGE_FLAGS, flags);
64108901 VY	457
	458	if (mode >= 0)
	459	addattr16(&req.n, sizeof(req), IFLA_BRIDGE_MODE, mode);
	460
	461	addattr_nest_end(&req.n, nest);
	462	}
	463
86bf43c7	464	if (rtnl_talk(&rth, &req.n, NULL) < 0)
42ecedd4	465	return -1;
64108901 VY	466
	467	return 0;
	468	}
	469
	470	static int brlink_show(int argc, char **argv)
	471	{
	472	char *filter_dev = NULL;
	473
	474	while (argc > 0) {
	475	if (strcmp(*argv, "dev") == 0) {
	476	NEXT_ARG();
	477	if (filter_dev)
	478	duparg("dev", *argv);
	479	filter_dev = *argv;
	480	}
	481	argc--; argv++;
	482	}
	483
	484	if (filter_dev) {
	485	if ((filter_index = ll_name_to_index(filter_dev)) == 0) {
	486	fprintf(stderr, "Cannot find device \"%s\"\n",
	487	filter_dev);
	488	return -1;
	489	}
	490	}
	491
fab9a18a RM	492	if (show_details) {
	493	if (rtnl_wilddump_req_filter(&rth, PF_BRIDGE, RTM_GETLINK,
	494	(compress_vlans ?
	495	RTEXT_FILTER_BRVLAN_COMPRESSED :
	496	RTEXT_FILTER_BRVLAN)) < 0) {
	497	perror("Cannon send dump request");
	498	exit(1);
	499	}
	500	} else {
	501	if (rtnl_wilddump_request(&rth, PF_BRIDGE, RTM_GETLINK) < 0) {
	502	perror("Cannon send dump request");
	503	exit(1);
	504	}
64108901 VY	505	}
	506
	507	if (rtnl_dump_filter(&rth, print_linkinfo, stdout) < 0) {
	508	fprintf(stderr, "Dump terminated\n");
	509	exit(1);
	510	}
	511	return 0;
	512	}
	513
	514	int do_link(int argc, char **argv)
	515	{
	516	ll_init_map(&rth);
	517	if (argc > 0) {
	518	if (matches(*argv, "set") == 0 \|\|
	519	matches(*argv, "change") == 0)
	520	return brlink_modify(argc-1, argv+1);
	521	if (matches(*argv, "show") == 0 \|\|
	522	matches(*argv, "lst") == 0 \|\|
	523	matches(*argv, "list") == 0)
	524	return brlink_show(argc-1, argv+1);
	525	if (matches(*argv, "help") == 0)
	526	usage();
	527	} else
	528	return brlink_show(0, NULL);
	529
	530	fprintf(stderr, "Command \"%s\" is unknown, try \"bridge link help\".\n", *argv);
	531	exit(-1);
	532	}