[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 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 >= sizeof(oper_states)/sizeof(oper_states[0]))
		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 >= sizeof(hw_mode)/sizeof(hw_mode[0]))
		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_UNICAST_FLOOD])
					print_onoff(fp, "flood",
						    rta_getattr_u8(prtb[IFLA_BRPORT_UNICAST_FLOOD]));
			}
		} 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,	"                               [ flood {on | off} ]\n");
	fprintf(stderr, "                               [ hwmode {vepa | veb} ]\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;
	char *d = NULL;
	__s8 learning = -1;
	__s8 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 = BRIDGE_FLAGS_MASTER;
	struct rtattr *nest;

	memset(&req, 0, sizeof(req));

	req.n.nlmsg_len = NLMSG_LENGTH(sizeof(struct ifinfomsg));
	req.n.nlmsg_flags = NLM_F_REQUEST;
	req.n.nlmsg_type = RTM_SETLINK;
	req.ifm.ifi_family = PF_BRIDGE;

	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))
				exit(-1);
		} else if (strcmp(*argv, "hairpin") == 0) {
			NEXT_ARG();
			if (!on_off("hairping", &hairpin, *argv))
				exit(-1);
		} else if (strcmp(*argv, "fastleave") == 0) {
			NEXT_ARG();
			if (!on_off("fastleave", &fast_leave, *argv))
				exit(-1);
		} else if (strcmp(*argv, "root_block") == 0) {
			NEXT_ARG();
			if (!on_off("root_block", &root_block, *argv))
				exit(-1);
		} else if (strcmp(*argv, "learning") == 0) {
			NEXT_ARG();
			if (!on_off("learning", &learning, *argv))
				exit(-1);
		} else if (strcmp(*argv, "flood") == 0) {
			NEXT_ARG();
			if (!on_off("flood", &flood, *argv))
				exit(-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();
			state = atoi(*argv);
		} 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");
				exit(-1);
			}
		} else {
			usage();
		}
		argc--; argv++;
	}
	if (d == NULL) {
		fprintf(stderr, "Device is a required argument.\n");
		exit(-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);
		exit(-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 (learning >= 0)
		addattr8(&req.n, sizeof(req), IFLA_BRPORT_LEARNING, learning);

	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);

	addattr_nest_end(&req.n, nest);

	/* IFLA_AF_SPEC nested attribute.  Contains IFLA_BRIDGE_FLAGS that
	 * designates master or self operation as well as 'vepa' or 'veb'
	 * operation modes.  These are only valid in 'self' mode on some
	 * devices so far.  Thus we only need to include the flags attribute
	 * if we are setting the hw mode.
	 */
	if (mode >= 0) {
		nest = addattr_nest(&req.n, sizeof(req), IFLA_AF_SPEC);

		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, 0, 0, NULL) < 0)
		exit(2);

	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
	28	extern char if_indextoname (unsigned int __ifindex, char __ifname);
	29
	30	static void print_link_flags(FILE *fp, unsigned flags)
	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) { \
	37	flags &= ~IFF_##f ; \
	38	fprintf(fp, #f "%s", flags ? "," : ""); }
	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
	58	if (flags)
	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)
	71	{
	72	if (state >= sizeof(oper_states)/sizeof(oper_states[0]))
	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	{
	93	if (mode >= sizeof(hw_mode)/sizeof(hw_mode[0]))
	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);
	105	struct rtattr * tb[IFLA_MAX+1];
	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;
	112	}
	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]);
d04bc300 SH	139	if (iflink == 0)
d04bc300 SH	140	fprintf(fp, "@NONE: ");
1465db1a	141	else
38df7ac9	142	fprintf(fp, "@%s: ",
d04bc300	143	if_indextoname(iflink, b1));
1465db1a	144	} else
d04bc300	145	fprintf(fp, ": ");
d04bc300 SH	146
	147	print_link_flags(fp, ifi->ifi_flags);
	148
	149	if (tb[IFLA_MTU])
1465db1a	150	fprintf(fp, "mtu %u ", rta_getattr_u32(tb[IFLA_MTU]));
d04bc300	151
1465db1a	152	if (tb[IFLA_MASTER])
38df7ac9	153	fprintf(fp, "master %s ",
1465db1a	154	if_indextoname(rta_getattr_u32(tb[IFLA_MASTER]), b1));
d04bc300 SH	155
d04bc300 SH	156	if (tb[IFLA_PROTINFO]) {
b1b7ce0f VY	157	if (tb[IFLA_PROTINFO]->rta_type & NLA_F_NESTED) {
	158	struct rtattr *prtb[IFLA_BRPORT_MAX+1];
	159
	160	parse_rtattr_nested(prtb, IFLA_BRPORT_MAX,
	161	tb[IFLA_PROTINFO]);
	162
	163	if (prtb[IFLA_BRPORT_STATE])
	164	print_portstate(fp,
	165	rta_getattr_u8(prtb[IFLA_BRPORT_STATE]));
	166	if (prtb[IFLA_BRPORT_PRIORITY])
	167	fprintf(fp, "priority %hu ",
	168	rta_getattr_u16(prtb[IFLA_BRPORT_PRIORITY]));
	169	if (prtb[IFLA_BRPORT_COST])
	170	fprintf(fp, "cost %u ",
	171	rta_getattr_u32(prtb[IFLA_BRPORT_COST]));
4cd20da1 SH	172
	173	if (show_details) {
	174	fprintf(fp, "%s ", _SL_);
	175
	176	if (prtb[IFLA_BRPORT_MODE])
	177	print_onoff(fp, "hairpin",
	178	rta_getattr_u8(prtb[IFLA_BRPORT_MODE]));
	179	if (prtb[IFLA_BRPORT_GUARD])
	180	print_onoff(fp, "guard",
	181	rta_getattr_u8(prtb[IFLA_BRPORT_GUARD]));
	182	if (prtb[IFLA_BRPORT_PROTECT])
	183	print_onoff(fp, "root_block",
	184	rta_getattr_u8(prtb[IFLA_BRPORT_PROTECT]));
	185	if (prtb[IFLA_BRPORT_FAST_LEAVE])
	186	print_onoff(fp, "fastleave",
	187	rta_getattr_u8(prtb[IFLA_BRPORT_FAST_LEAVE]));
f0f4ab60 VY	188	if (prtb[IFLA_BRPORT_LEARNING])
	189	print_onoff(fp, "learning",
	190	rta_getattr_u8(prtb[IFLA_BRPORT_LEARNING]));
	191	if (prtb[IFLA_BRPORT_UNICAST_FLOOD])
	192	print_onoff(fp, "flood",
	193	rta_getattr_u8(prtb[IFLA_BRPORT_UNICAST_FLOOD]));
4cd20da1	194	}
b1b7ce0f VY	195	} else
b1b7ce0f VY	196	print_portstate(fp, rta_getattr_u8(tb[IFLA_PROTINFO]));
d04bc300 SH	197	}
d04bc300 SH	198
b1b7ce0f VY	199	if (tb[IFLA_AF_SPEC]) {
	200	/* This is reported by HW devices that have some bridging
	201	* capabilities.
	202	*/
	203	struct rtattr *aftb[IFLA_BRIDGE_MAX+1];
	204
	205	parse_rtattr_nested(aftb, IFLA_BRIDGE_MAX, tb[IFLA_AF_SPEC]);
	206
a40d0827 JF	207	if (aftb[IFLA_BRIDGE_MODE])
a40d0827 JF	208	print_hwmode(fp, rta_getattr_u16(aftb[IFLA_BRIDGE_MODE]));
b1b7ce0f	209	}
d04bc300 SH	210
	211	fprintf(fp, "\n");
	212	fflush(fp);
	213	return 0;
	214	}
64108901 VY	215
	216	static void usage(void)
	217	{
	218	fprintf(stderr, "Usage: bridge link set dev DEV [ cost COST ] [ priority PRIO ] [ state STATE ]\n");
	219	fprintf(stderr, " [ guard {on \| off} ]\n");
	220	fprintf(stderr, " [ hairpin {on \| off} ] \n");
	221	fprintf(stderr, " [ fastleave {on \| off} ]\n");
	222	fprintf(stderr, " [ root_block {on \| off} ]\n");
f0f4ab60 VY	223	fprintf(stderr, " [ learning {on \| off} ]\n");
f0f4ab60 VY	224	fprintf(stderr, " [ flood {on \| off} ]\n");
64108901 VY	225	fprintf(stderr, " [ hwmode {vepa \| veb} ]\n");
	226	fprintf(stderr, " bridge link show [dev DEV]\n");
	227	exit(-1);
	228	}
	229
	230	static bool on_off(char arg, __s8 attr, char *val)
	231	{
	232	if (strcmp(val, "on") == 0)
	233	*attr = 1;
	234	else if (strcmp(val, "off") == 0)
	235	*attr = 0;
	236	else {
	237	fprintf(stderr,
	238	"Error: argument of \"%s\" must be \"on\" or \"off\"\n",
	239	arg);
	240	return false;
	241	}
	242
	243	return true;
	244	}
	245
	246	static int brlink_modify(int argc, char **argv)
	247	{
	248	struct {
	249	struct nlmsghdr n;
	250	struct ifinfomsg ifm;
	251	char buf[512];
	252	} req;
	253	char *d = NULL;
f0f4ab60 VY	254	__s8 learning = -1;
f0f4ab60 VY	255	__s8 flood = -1;
64108901 VY	256	__s8 hairpin = -1;
	257	__s8 bpdu_guard = -1;
	258	__s8 fast_leave = -1;
b1b7ce0f	259	__s8 root_block = -1;
64108901 VY	260	__u32 cost = 0;
	261	__s16 priority = -1;
	262	__s8 state = -1;
	263	__s16 mode = -1;
	264	__u16 flags = BRIDGE_FLAGS_MASTER;
	265	struct rtattr *nest;
	266
	267	memset(&req, 0, sizeof(req));
	268
	269	req.n.nlmsg_len = NLMSG_LENGTH(sizeof(struct ifinfomsg));
	270	req.n.nlmsg_flags = NLM_F_REQUEST;
	271	req.n.nlmsg_type = RTM_SETLINK;
	272	req.ifm.ifi_family = PF_BRIDGE;
	273
	274	while (argc > 0) {
	275	if (strcmp(*argv, "dev") == 0) {
	276	NEXT_ARG();
	277	d = *argv;
	278	} else if (strcmp(*argv, "guard") == 0) {
	279	NEXT_ARG();
	280	if (!on_off("guard", &bpdu_guard, *argv))
	281	exit(-1);
	282	} else if (strcmp(*argv, "hairpin") == 0) {
	283	NEXT_ARG();
	284	if (!on_off("hairping", &hairpin, *argv))
	285	exit(-1);
	286	} else if (strcmp(*argv, "fastleave") == 0) {
	287	NEXT_ARG();
	288	if (!on_off("fastleave", &fast_leave, *argv))
	289	exit(-1);
b1b7ce0f VY	290	} else if (strcmp(*argv, "root_block") == 0) {
	291	NEXT_ARG();
	292	if (!on_off("root_block", &root_block, *argv))
	293	exit(-1);
f0f4ab60 VY	294	} else if (strcmp(*argv, "learning") == 0) {
	295	NEXT_ARG();
	296	if (!on_off("learning", &learning, *argv))
	297	exit(-1);
	298	} else if (strcmp(*argv, "flood") == 0) {
	299	NEXT_ARG();
	300	if (!on_off("flood", &flood, *argv))
	301	exit(-1);
a40d0827	302	} else if (strcmp(*argv, "cost") == 0) {
64108901 VY	303	NEXT_ARG();
64108901 VY	304	cost = atoi(*argv);
a40d0827	305	} else if (strcmp(*argv, "priority") == 0) {
64108901 VY	306	NEXT_ARG();
64108901 VY	307	priority = atoi(*argv);
a40d0827	308	} else if (strcmp(*argv, "state") == 0) {
64108901 VY	309	NEXT_ARG();
64108901 VY	310	state = atoi(*argv);
a40d0827	311	} else if (strcmp(*argv, "hwmode") == 0) {
64108901	312	NEXT_ARG();
a40d0827	313	flags = BRIDGE_FLAGS_SELF;
64108901 VY	314	if (strcmp(*argv, "vepa") == 0)
	315	mode = BRIDGE_MODE_VEPA;
	316	else if (strcmp(*argv, "veb") == 0)
	317	mode = BRIDGE_MODE_VEB;
	318	else {
	319	fprintf(stderr,
	320	"Mode argument must be \"vepa\" or "
	321	"\"veb\".\n");
	322	exit(-1);
	323	}
	324	} else {
	325	usage();
	326	}
	327	argc--; argv++;
	328	}
	329	if (d == NULL) {
	330	fprintf(stderr, "Device is a required argument.\n");
	331	exit(-1);
	332	}
	333
	334
	335	req.ifm.ifi_index = ll_name_to_index(d);
	336	if (req.ifm.ifi_index == 0) {
	337	fprintf(stderr, "Cannot find bridge device \"%s\"\n", d);
	338	exit(-1);
	339	}
	340
	341	/* Nested PROTINFO attribute. Contains: port flags, cost, priority and
	342	* state.
	343	*/
	344	nest = addattr_nest(&req.n, sizeof(req),
	345	IFLA_PROTINFO \| NLA_F_NESTED);
	346	/* Flags first */
	347	if (bpdu_guard >= 0)
	348	addattr8(&req.n, sizeof(req), IFLA_BRPORT_GUARD, bpdu_guard);
	349	if (hairpin >= 0)
	350	addattr8(&req.n, sizeof(req), IFLA_BRPORT_MODE, hairpin);
	351	if (fast_leave >= 0)
	352	addattr8(&req.n, sizeof(req), IFLA_BRPORT_FAST_LEAVE,
	353	fast_leave);
b1b7ce0f VY	354	if (root_block >= 0)
b1b7ce0f VY	355	addattr8(&req.n, sizeof(req), IFLA_BRPORT_PROTECT, root_block);
f0f4ab60 VY	356	if (flood >= 0)
	357	addattr8(&req.n, sizeof(req), IFLA_BRPORT_UNICAST_FLOOD, flood);
	358	if (learning >= 0)
	359	addattr8(&req.n, sizeof(req), IFLA_BRPORT_LEARNING, learning);
64108901 VY	360
	361	if (cost > 0)
	362	addattr32(&req.n, sizeof(req), IFLA_BRPORT_COST, cost);
	363
	364	if (priority >= 0)
	365	addattr16(&req.n, sizeof(req), IFLA_BRPORT_PRIORITY, priority);
	366
	367	if (state >= 0)
	368	addattr8(&req.n, sizeof(req), IFLA_BRPORT_STATE, state);
	369
	370	addattr_nest_end(&req.n, nest);
	371
	372	/* IFLA_AF_SPEC nested attribute. Contains IFLA_BRIDGE_FLAGS that
	373	* designates master or self operation as well as 'vepa' or 'veb'
	374	* operation modes. These are only valid in 'self' mode on some
	375	* devices so far. Thus we only need to include the flags attribute
	376	* if we are setting the hw mode.
	377	*/
	378	if (mode >= 0) {
	379	nest = addattr_nest(&req.n, sizeof(req), IFLA_AF_SPEC);
	380
	381	addattr16(&req.n, sizeof(req), IFLA_BRIDGE_FLAGS, flags);
	382
	383	if (mode >= 0)
	384	addattr16(&req.n, sizeof(req), IFLA_BRIDGE_MODE, mode);
	385
	386	addattr_nest_end(&req.n, nest);
	387	}
	388
	389	if (rtnl_talk(&rth, &req.n, 0, 0, NULL) < 0)
	390	exit(2);
	391
	392	return 0;
	393	}
	394
	395	static int brlink_show(int argc, char **argv)
	396	{
	397	char *filter_dev = NULL;
	398
	399	while (argc > 0) {
	400	if (strcmp(*argv, "dev") == 0) {
	401	NEXT_ARG();
	402	if (filter_dev)
	403	duparg("dev", *argv);
	404	filter_dev = *argv;
	405	}
	406	argc--; argv++;
	407	}
	408
	409	if (filter_dev) {
	410	if ((filter_index = ll_name_to_index(filter_dev)) == 0) {
	411	fprintf(stderr, "Cannot find device \"%s\"\n",
	412	filter_dev);
	413	return -1;
	414	}
	415	}
	416
	417	if (rtnl_wilddump_request(&rth, PF_BRIDGE, RTM_GETLINK) < 0) {
	418	perror("Cannon send dump request");
	419	exit(1);
	420	}
	421
	422	if (rtnl_dump_filter(&rth, print_linkinfo, stdout) < 0) {
	423	fprintf(stderr, "Dump terminated\n");
424	exit(1);
425	}
426	return 0;
427	}
428
429	int do_link(int argc, char **argv)
430	{
431	ll_init_map(&rth);
432	if (argc > 0) {
433	if (matches(*argv, "set") == 0 \|\|
434	matches(*argv, "change") == 0)
435	return brlink_modify(argc-1, argv+1);
436	if (matches(*argv, "show") == 0 \|\|
437	matches(*argv, "lst") == 0 \|\|
438	matches(*argv, "list") == 0)
439	return brlink_show(argc-1, argv+1);
440	if (matches(*argv, "help") == 0)
441	usage();
442	} else
443	return brlink_show(0, NULL);
444
445	fprintf(stderr, "Command \"%s\" is unknown, try \"bridge link help\".\n", *argv);
446	exit(-1);
447	}