[mirror_iproute2.git] / bridge / link.c


#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]));
			}
		} 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]));
	}

	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, "                               [ 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 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 {
			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);

	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) < 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 (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
d04bc300 SH	1
	2	#include <stdio.h>
	3	#include <stdlib.h>
	4	#include <unistd.h>
	5	#include <time.h>
	6	#include <sys/socket.h>
	7	#include <sys/time.h>
	8	#include <netinet/in.h>
	9	#include <linux/if.h>
	10	#include <linux/if_bridge.h>
	11	#include <string.h>
64108901	12	#include <stdbool.h>
d04bc300	13
64108901	14	#include "libnetlink.h"
d04bc300 SH	15	#include "utils.h"
	16	#include "br_common.h"
	17
9dca899b	18	static unsigned int filter_index;
64108901	19
d04bc300 SH	20	static const char *port_states[] = {
	21	[BR_STATE_DISABLED] = "disabled",
	22	[BR_STATE_LISTENING] = "listening",
	23	[BR_STATE_LEARNING] = "learning",
	24	[BR_STATE_FORWARDING] = "forwarding",
	25	[BR_STATE_BLOCKING] = "blocking",
	26	};
	27
df4b043f	28	extern char if_indextoname(unsigned int __ifindex, char __ifname);
d04bc300	29
df4b043f	30	static void print_link_flags(FILE *fp, unsigned int flags)
d04bc300 SH	31	{
	32	fprintf(fp, "<");
	33	if (flags & IFF_UP && !(flags & IFF_RUNNING))
	34	fprintf(fp, "NO-CARRIER%s", flags ? "," : "");
	35	flags &= ~IFF_RUNNING;
	36	#define _PF(f) if (flags&IFF_##f) { \
df4b043f SH	37	flags &= ~IFF_##f ; \
df4b043f SH	38	fprintf(fp, #f "%s", flags ? "," : ""); }
d04bc300 SH	39	_PF(LOOPBACK);
	40	_PF(BROADCAST);
	41	_PF(POINTOPOINT);
	42	_PF(MULTICAST);
	43	_PF(NOARP);
	44	_PF(ALLMULTI);
	45	_PF(PROMISC);
	46	_PF(MASTER);
	47	_PF(SLAVE);
	48	_PF(DEBUG);
	49	_PF(DYNAMIC);
	50	_PF(AUTOMEDIA);
	51	_PF(PORTSEL);
	52	_PF(NOTRAILERS);
	53	_PF(UP);
	54	_PF(LOWER_UP);
	55	_PF(DORMANT);
	56	_PF(ECHO);
	57	#undef _PF
df4b043f	58	if (flags)
d04bc300 SH	59	fprintf(fp, "%x", flags);
	60	fprintf(fp, "> ");
	61	}
	62
	63	static const char *oper_states[] = {
38df7ac9	64	"UNKNOWN", "NOTPRESENT", "DOWN", "LOWERLAYERDOWN",
d04bc300 SH	65	"TESTING", "DORMANT", "UP"
	66	};
	67
b1b7ce0f VY	68	static const char *hw_mode[] = {"VEB", "VEPA"};
b1b7ce0f VY	69
d04bc300 SH	70	static void print_operstate(FILE *f, __u8 state)
d04bc300 SH	71	{
df4b043f	72	if (state >= ARRAY_SIZE(oper_states))
d04bc300 SH	73	fprintf(f, "state %#x ", state);
	74	else
	75	fprintf(f, "state %s ", oper_states[state]);
	76	}
	77
b1b7ce0f VY	78	static void print_portstate(FILE *f, __u8 state)
	79	{
	80	if (state <= BR_STATE_BLOCKING)
	81	fprintf(f, "state %s ", port_states[state]);
	82	else
	83	fprintf(f, "state (%d) ", state);
	84	}
	85
	86	static void print_onoff(FILE f, char flag, __u8 val)
	87	{
	88	fprintf(f, "%s %s ", flag, val ? "on" : "off");
	89	}
	90
	91	static void print_hwmode(FILE *f, __u16 mode)
	92	{
df4b043f	93	if (mode >= ARRAY_SIZE(hw_mode))
b1b7ce0f VY	94	fprintf(f, "hwmode %#hx ", mode);
	95	else
	96	fprintf(f, "hwmode %s ", hw_mode[mode]);
	97	}
	98
d04bc300 SH	99	int print_linkinfo(const struct sockaddr_nl *who,
	100	struct nlmsghdr n, void arg)
	101	{
	102	FILE *fp = arg;
	103	int len = n->nlmsg_len;
	104	struct ifinfomsg *ifi = NLMSG_DATA(n);
df4b043f	105	struct rtattr *tb[IFLA_MAX+1];
d04bc300 SH	106	char b1[IFNAMSIZ];
	107
	108	len -= NLMSG_LENGTH(sizeof(*ifi));
	109	if (len < 0) {
	110	fprintf(stderr, "Message too short!\n");
	111	return -1;
df4b043f	112	}
d04bc300 SH	113
	114	if (!(ifi->ifi_family == AF_BRIDGE \|\| ifi->ifi_family == AF_UNSPEC))
	115	return 0;
	116
64108901 VY	117	if (filter_index && filter_index != ifi->ifi_index)
	118	return 0;
	119
b1b7ce0f	120	parse_rtattr_flags(tb, IFLA_MAX, IFLA_RTA(ifi), len, NLA_F_NESTED);
d04bc300 SH	121
	122	if (tb[IFLA_IFNAME] == NULL) {
	123	fprintf(stderr, "BUG: nil ifname\n");
	124	return -1;
	125	}
	126
	127	if (n->nlmsg_type == RTM_DELLINK)
	128	fprintf(fp, "Deleted ");
	129
	130	fprintf(fp, "%d: %s ", ifi->ifi_index,
1465db1a	131	tb[IFLA_IFNAME] ? rta_getattr_str(tb[IFLA_IFNAME]) : "<nil>");
d04bc300	132
38df7ac9	133	if (tb[IFLA_OPERSTATE])
1465db1a	134	print_operstate(fp, rta_getattr_u8(tb[IFLA_OPERSTATE]));
38df7ac9	135
d04bc300 SH	136	if (tb[IFLA_LINK]) {
d04bc300 SH	137	SPRINT_BUF(b1);
1465db1a	138	int iflink = rta_getattr_u32(tb[IFLA_LINK]);
df4b043f	139
d04bc300 SH	140	if (iflink == 0)
d04bc300 SH	141	fprintf(fp, "@NONE: ");
1465db1a	142	else
38df7ac9	143	fprintf(fp, "@%s: ",
d04bc300	144	if_indextoname(iflink, b1));
1465db1a	145	} else
d04bc300	146	fprintf(fp, ": ");
d04bc300 SH	147
	148	print_link_flags(fp, ifi->ifi_flags);
	149
	150	if (tb[IFLA_MTU])
1465db1a	151	fprintf(fp, "mtu %u ", rta_getattr_u32(tb[IFLA_MTU]));
d04bc300	152
1465db1a	153	if (tb[IFLA_MASTER])
38df7ac9	154	fprintf(fp, "master %s ",
1465db1a	155	if_indextoname(rta_getattr_u32(tb[IFLA_MASTER]), b1));
d04bc300 SH	156
d04bc300 SH	157	if (tb[IFLA_PROTINFO]) {
b1b7ce0f VY	158	if (tb[IFLA_PROTINFO]->rta_type & NLA_F_NESTED) {
	159	struct rtattr *prtb[IFLA_BRPORT_MAX+1];
	160
	161	parse_rtattr_nested(prtb, IFLA_BRPORT_MAX,
	162	tb[IFLA_PROTINFO]);
	163
	164	if (prtb[IFLA_BRPORT_STATE])
	165	print_portstate(fp,
	166	rta_getattr_u8(prtb[IFLA_BRPORT_STATE]));
	167	if (prtb[IFLA_BRPORT_PRIORITY])
	168	fprintf(fp, "priority %hu ",
	169	rta_getattr_u16(prtb[IFLA_BRPORT_PRIORITY]));
	170	if (prtb[IFLA_BRPORT_COST])
	171	fprintf(fp, "cost %u ",
	172	rta_getattr_u32(prtb[IFLA_BRPORT_COST]));
4cd20da1 SH	173
	174	if (show_details) {
	175	fprintf(fp, "%s ", _SL_);
	176
	177	if (prtb[IFLA_BRPORT_MODE])
	178	print_onoff(fp, "hairpin",
	179	rta_getattr_u8(prtb[IFLA_BRPORT_MODE]));
	180	if (prtb[IFLA_BRPORT_GUARD])
	181	print_onoff(fp, "guard",
	182	rta_getattr_u8(prtb[IFLA_BRPORT_GUARD]));
	183	if (prtb[IFLA_BRPORT_PROTECT])
	184	print_onoff(fp, "root_block",
	185	rta_getattr_u8(prtb[IFLA_BRPORT_PROTECT]));
	186	if (prtb[IFLA_BRPORT_FAST_LEAVE])
	187	print_onoff(fp, "fastleave",
	188	rta_getattr_u8(prtb[IFLA_BRPORT_FAST_LEAVE]));
f0f4ab60 VY	189	if (prtb[IFLA_BRPORT_LEARNING])
	190	print_onoff(fp, "learning",
	191	rta_getattr_u8(prtb[IFLA_BRPORT_LEARNING]));
674bb438 SF	192	if (prtb[IFLA_BRPORT_LEARNING_SYNC])
	193	print_onoff(fp, "learning_sync",
	194	rta_getattr_u8(prtb[IFLA_BRPORT_LEARNING_SYNC]));
f0f4ab60 VY	195	if (prtb[IFLA_BRPORT_UNICAST_FLOOD])
	196	print_onoff(fp, "flood",
	197	rta_getattr_u8(prtb[IFLA_BRPORT_UNICAST_FLOOD]));
9208b4e7 NA	198	if (prtb[IFLA_BRPORT_MCAST_FLOOD])
	199	print_onoff(fp, "mcast_flood",
	200	rta_getattr_u8(prtb[IFLA_BRPORT_MCAST_FLOOD]));
41973a47 RP	201	if (prtb[IFLA_BRPORT_NEIGH_SUPPRESS])
	202	print_onoff(fp, "neigh_suppress",
	203	rta_getattr_u8(prtb[IFLA_BRPORT_NEIGH_SUPPRESS]));
4cd20da1	204	}
b1b7ce0f VY	205	} else
b1b7ce0f VY	206	print_portstate(fp, rta_getattr_u8(tb[IFLA_PROTINFO]));
d04bc300 SH	207	}
d04bc300 SH	208
b1b7ce0f VY	209	if (tb[IFLA_AF_SPEC]) {
	210	/* This is reported by HW devices that have some bridging
	211	* capabilities.
	212	*/
	213	struct rtattr *aftb[IFLA_BRIDGE_MAX+1];
	214
	215	parse_rtattr_nested(aftb, IFLA_BRIDGE_MAX, tb[IFLA_AF_SPEC]);
	216
a40d0827 JF	217	if (aftb[IFLA_BRIDGE_MODE])
a40d0827 JF	218	print_hwmode(fp, rta_getattr_u16(aftb[IFLA_BRIDGE_MODE]));
b1b7ce0f	219	}
d04bc300 SH	220
	221	fprintf(fp, "\n");
	222	fflush(fp);
	223	return 0;
	224	}
64108901 VY	225
	226	static void usage(void)
	227	{
	228	fprintf(stderr, "Usage: bridge link set dev DEV [ cost COST ] [ priority PRIO ] [ state STATE ]\n");
	229	fprintf(stderr, " [ guard {on \| off} ]\n");
df4b043f	230	fprintf(stderr, " [ hairpin {on \| off} ]\n");
64108901 VY	231	fprintf(stderr, " [ fastleave {on \| off} ]\n");
64108901 VY	232	fprintf(stderr, " [ root_block {on \| off} ]\n");
f0f4ab60	233	fprintf(stderr, " [ learning {on \| off} ]\n");
674bb438	234	fprintf(stderr, " [ learning_sync {on \| off} ]\n");
f0f4ab60	235	fprintf(stderr, " [ flood {on \| off} ]\n");
9208b4e7	236	fprintf(stderr, " [ mcast_flood {on \| off} ]\n");
64108901	237	fprintf(stderr, " [ hwmode {vepa \| veb} ]\n");
22a98f51	238	fprintf(stderr, " [ self ] [ master ]\n");
64108901 VY	239	fprintf(stderr, " bridge link show [dev DEV]\n");
	240	exit(-1);
	241	}
	242
	243	static bool on_off(char arg, __s8 attr, char *val)
	244	{
	245	if (strcmp(val, "on") == 0)
	246	*attr = 1;
	247	else if (strcmp(val, "off") == 0)
	248	*attr = 0;
	249	else {
	250	fprintf(stderr,
	251	"Error: argument of \"%s\" must be \"on\" or \"off\"\n",
	252	arg);
	253	return false;
	254	}
	255
	256	return true;
	257	}
	258
	259	static int brlink_modify(int argc, char **argv)
	260	{
	261	struct {
	262	struct nlmsghdr n;
	263	struct ifinfomsg ifm;
	264	char buf[512];
d17b136f PS	265	} req = {
	266	.n.nlmsg_len = NLMSG_LENGTH(sizeof(struct ifinfomsg)),
	267	.n.nlmsg_flags = NLM_F_REQUEST,
	268	.n.nlmsg_type = RTM_SETLINK,
	269	.ifm.ifi_family = PF_BRIDGE,
	270	};
64108901	271	char *d = NULL;
41973a47	272	__s8 neigh_suppress = -1;
f0f4ab60	273	__s8 learning = -1;
674bb438	274	__s8 learning_sync = -1;
f0f4ab60	275	__s8 flood = -1;
9208b4e7	276	__s8 mcast_flood = -1;
64108901 VY	277	__s8 hairpin = -1;
	278	__s8 bpdu_guard = -1;
	279	__s8 fast_leave = -1;
b1b7ce0f	280	__s8 root_block = -1;
64108901 VY	281	__u32 cost = 0;
	282	__s16 priority = -1;
	283	__s8 state = -1;
	284	__s16 mode = -1;
6fdb4658	285	__u16 flags = 0;
64108901 VY	286	struct rtattr *nest;
64108901 VY	287
64108901 VY	288	while (argc > 0) {
	289	if (strcmp(*argv, "dev") == 0) {
	290	NEXT_ARG();
	291	d = *argv;
	292	} else if (strcmp(*argv, "guard") == 0) {
	293	NEXT_ARG();
	294	if (!on_off("guard", &bpdu_guard, *argv))
42ecedd4	295	return -1;
64108901 VY	296	} else if (strcmp(*argv, "hairpin") == 0) {
	297	NEXT_ARG();
	298	if (!on_off("hairping", &hairpin, *argv))
42ecedd4	299	return -1;
64108901 VY	300	} else if (strcmp(*argv, "fastleave") == 0) {
	301	NEXT_ARG();
	302	if (!on_off("fastleave", &fast_leave, *argv))
42ecedd4	303	return -1;
b1b7ce0f VY	304	} else if (strcmp(*argv, "root_block") == 0) {
	305	NEXT_ARG();
	306	if (!on_off("root_block", &root_block, *argv))
42ecedd4	307	return -1;
f0f4ab60 VY	308	} else if (strcmp(*argv, "learning") == 0) {
	309	NEXT_ARG();
	310	if (!on_off("learning", &learning, *argv))
42ecedd4	311	return -1;
674bb438 SF	312	} else if (strcmp(*argv, "learning_sync") == 0) {
	313	NEXT_ARG();
	314	if (!on_off("learning_sync", &learning_sync, *argv))
42ecedd4	315	return -1;
f0f4ab60 VY	316	} else if (strcmp(*argv, "flood") == 0) {
	317	NEXT_ARG();
	318	if (!on_off("flood", &flood, *argv))
42ecedd4	319	return -1;
9208b4e7 NA	320	} else if (strcmp(*argv, "mcast_flood") == 0) {
	321	NEXT_ARG();
	322	if (!on_off("mcast_flood", &mcast_flood, *argv))
	323	return -1;
a40d0827	324	} else if (strcmp(*argv, "cost") == 0) {
64108901 VY	325	NEXT_ARG();
64108901 VY	326	cost = atoi(*argv);
a40d0827	327	} else if (strcmp(*argv, "priority") == 0) {
64108901 VY	328	NEXT_ARG();
64108901 VY	329	priority = atoi(*argv);
a40d0827	330	} else if (strcmp(*argv, "state") == 0) {
64108901	331	NEXT_ARG();
6b8c871d	332	char *endptr;
62000e51	333	size_t nstates = ARRAY_SIZE(port_states);
df4b043f	334
6b8c871d AP	335	state = strtol(*argv, &endptr, 10);
	336	if (!(*argv != '\0' && endptr == '\0')) {
	337	for (state = 0; state < nstates; state++)
	338	if (strcmp(port_states[state], *argv) == 0)
	339	break;
	340	if (state == nstates) {
	341	fprintf(stderr,
	342	"Error: invalid STP port state\n");
42ecedd4	343	return -1;
6b8c871d AP	344	}
6b8c871d AP	345	}
a40d0827	346	} else if (strcmp(*argv, "hwmode") == 0) {
64108901	347	NEXT_ARG();
a40d0827	348	flags = BRIDGE_FLAGS_SELF;
64108901 VY	349	if (strcmp(*argv, "vepa") == 0)
	350	mode = BRIDGE_MODE_VEPA;
	351	else if (strcmp(*argv, "veb") == 0)
	352	mode = BRIDGE_MODE_VEB;
	353	else {
	354	fprintf(stderr,
df4b043f	355	"Mode argument must be \"vepa\" or \"veb\".\n");
42ecedd4	356	return -1;
64108901	357	}
6fdb4658	358	} else if (strcmp(*argv, "self") == 0) {
22a98f51 RP	359	flags \|= BRIDGE_FLAGS_SELF;
	360	} else if (strcmp(*argv, "master") == 0) {
	361	flags \|= BRIDGE_FLAGS_MASTER;
41973a47 RP	362	} else if (strcmp(*argv, "neigh_suppress") == 0) {
	363	NEXT_ARG();
	364	if (!on_off("neigh_suppress", &neigh_suppress,
	365	*argv))
	366	return -1;
64108901 VY	367	} else {
	368	usage();
	369	}
	370	argc--; argv++;
	371	}
	372	if (d == NULL) {
	373	fprintf(stderr, "Device is a required argument.\n");
42ecedd4	374	return -1;
64108901 VY	375	}
	376
	377
	378	req.ifm.ifi_index = ll_name_to_index(d);
	379	if (req.ifm.ifi_index == 0) {
	380	fprintf(stderr, "Cannot find bridge device \"%s\"\n", d);
42ecedd4	381	return -1;
64108901 VY	382	}
	383
	384	/* Nested PROTINFO attribute. Contains: port flags, cost, priority and
	385	* state.
	386	*/
	387	nest = addattr_nest(&req.n, sizeof(req),
	388	IFLA_PROTINFO \| NLA_F_NESTED);
	389	/* Flags first */
	390	if (bpdu_guard >= 0)
	391	addattr8(&req.n, sizeof(req), IFLA_BRPORT_GUARD, bpdu_guard);
	392	if (hairpin >= 0)
	393	addattr8(&req.n, sizeof(req), IFLA_BRPORT_MODE, hairpin);
	394	if (fast_leave >= 0)
	395	addattr8(&req.n, sizeof(req), IFLA_BRPORT_FAST_LEAVE,
	396	fast_leave);
b1b7ce0f VY	397	if (root_block >= 0)
b1b7ce0f VY	398	addattr8(&req.n, sizeof(req), IFLA_BRPORT_PROTECT, root_block);
f0f4ab60 VY	399	if (flood >= 0)
f0f4ab60 VY	400	addattr8(&req.n, sizeof(req), IFLA_BRPORT_UNICAST_FLOOD, flood);
9208b4e7 NA	401	if (mcast_flood >= 0)
	402	addattr8(&req.n, sizeof(req), IFLA_BRPORT_MCAST_FLOOD,
	403	mcast_flood);
f0f4ab60 VY	404	if (learning >= 0)
f0f4ab60 VY	405	addattr8(&req.n, sizeof(req), IFLA_BRPORT_LEARNING, learning);
674bb438 SF	406	if (learning_sync >= 0)
	407	addattr8(&req.n, sizeof(req), IFLA_BRPORT_LEARNING_SYNC,
	408	learning_sync);
64108901 VY	409
	410	if (cost > 0)
	411	addattr32(&req.n, sizeof(req), IFLA_BRPORT_COST, cost);
	412
	413	if (priority >= 0)
	414	addattr16(&req.n, sizeof(req), IFLA_BRPORT_PRIORITY, priority);
	415
	416	if (state >= 0)
	417	addattr8(&req.n, sizeof(req), IFLA_BRPORT_STATE, state);
	418
41973a47 RP	419	if (neigh_suppress != -1)
	420	addattr8(&req.n, sizeof(req), IFLA_BRPORT_NEIGH_SUPPRESS,
	421	neigh_suppress);
	422
64108901 VY	423	addattr_nest_end(&req.n, nest);
64108901 VY	424
6fdb4658 RP	425	/* IFLA_AF_SPEC nested attribute. Contains IFLA_BRIDGE_FLAGS that
	426	* designates master or self operation and IFLA_BRIDGE_MODE
	427	* for hw 'vepa' or 'veb' operation modes. The hwmodes are
	428	* only valid in 'self' mode on some devices so far.
64108901	429	*/
6fdb4658	430	if (mode >= 0 \|\| flags > 0) {
64108901 VY	431	nest = addattr_nest(&req.n, sizeof(req), IFLA_AF_SPEC);
64108901 VY	432
6fdb4658 RP	433	if (flags > 0)
6fdb4658 RP	434	addattr16(&req.n, sizeof(req), IFLA_BRIDGE_FLAGS, flags);
64108901 VY	435
	436	if (mode >= 0)
	437	addattr16(&req.n, sizeof(req), IFLA_BRIDGE_MODE, mode);
	438
	439	addattr_nest_end(&req.n, nest);
	440	}
	441
c079e121	442	if (rtnl_talk(&rth, &req.n, NULL, 0) < 0)
42ecedd4	443	return -1;
64108901 VY	444
	445	return 0;
	446	}
	447
	448	static int brlink_show(int argc, char **argv)
	449	{
	450	char *filter_dev = NULL;
	451
	452	while (argc > 0) {
	453	if (strcmp(*argv, "dev") == 0) {
	454	NEXT_ARG();
	455	if (filter_dev)
	456	duparg("dev", *argv);
	457	filter_dev = *argv;
	458	}
	459	argc--; argv++;
	460	}
	461
	462	if (filter_dev) {
	463	if ((filter_index = ll_name_to_index(filter_dev)) == 0) {
	464	fprintf(stderr, "Cannot find device \"%s\"\n",
	465	filter_dev);
	466	return -1;
	467	}
	468	}
	469
	470	if (rtnl_wilddump_request(&rth, PF_BRIDGE, RTM_GETLINK) < 0) {
	471	perror("Cannon send dump request");
	472	exit(1);
	473	}
	474
	475	if (rtnl_dump_filter(&rth, print_linkinfo, stdout) < 0) {
	476	fprintf(stderr, "Dump terminated\n");
	477	exit(1);
	478	}
	479	return 0;
	480	}
	481
	482	int do_link(int argc, char **argv)
	483	{
	484	ll_init_map(&rth);
	485	if (argc > 0) {
	486	if (matches(*argv, "set") == 0 \|\|
	487	matches(*argv, "change") == 0)
	488	return brlink_modify(argc-1, argv+1);
	489	if (matches(*argv, "show") == 0 \|\|
	490	matches(*argv, "lst") == 0 \|\|
	491	matches(*argv, "list") == 0)
	492	return brlink_show(argc-1, argv+1);
	493	if (matches(*argv, "help") == 0)
	494	usage();
	495	} else
	496	return brlink_show(0, NULL);
	497
	498	fprintf(stderr, "Command \"%s\" is unknown, try \"bridge link help\".\n", *argv);
	499	exit(-1);
	500	}