[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",
};

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;
	struct ifinfomsg *ifi = NLMSG_DATA(n);
	struct rtattr *tb[IFLA_MAX+1];
	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;

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

	fprintf(fp, "%d: ", ifi->ifi_index);

	print_name_and_link("%s: ", COLOR_NONE, name, tb);

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

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

		fprintf(fp, "master %s ", ll_index_to_name(master));
	}

	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	static void print_link_flags(FILE *fp, unsigned int flags)
d04bc300 SH	30	{
	31	fprintf(fp, "<");
	32	if (flags & IFF_UP && !(flags & IFF_RUNNING))
	33	fprintf(fp, "NO-CARRIER%s", flags ? "," : "");
	34	flags &= ~IFF_RUNNING;
	35	#define _PF(f) if (flags&IFF_##f) { \
df4b043f SH	36	flags &= ~IFF_##f ; \
df4b043f SH	37	fprintf(fp, #f "%s", flags ? "," : ""); }
d04bc300 SH	38	_PF(LOOPBACK);
	39	_PF(BROADCAST);
	40	_PF(POINTOPOINT);
	41	_PF(MULTICAST);
	42	_PF(NOARP);
	43	_PF(ALLMULTI);
	44	_PF(PROMISC);
	45	_PF(MASTER);
	46	_PF(SLAVE);
	47	_PF(DEBUG);
	48	_PF(DYNAMIC);
	49	_PF(AUTOMEDIA);
	50	_PF(PORTSEL);
	51	_PF(NOTRAILERS);
	52	_PF(UP);
	53	_PF(LOWER_UP);
	54	_PF(DORMANT);
	55	_PF(ECHO);
	56	#undef _PF
df4b043f	57	if (flags)
d04bc300 SH	58	fprintf(fp, "%x", flags);
	59	fprintf(fp, "> ");
	60	}
	61
	62	static const char *oper_states[] = {
38df7ac9	63	"UNKNOWN", "NOTPRESENT", "DOWN", "LOWERLAYERDOWN",
d04bc300 SH	64	"TESTING", "DORMANT", "UP"
	65	};
	66
b1b7ce0f VY	67	static const char *hw_mode[] = {"VEB", "VEPA"};
b1b7ce0f VY	68
d04bc300 SH	69	static void print_operstate(FILE *f, __u8 state)
d04bc300 SH	70	{
df4b043f	71	if (state >= ARRAY_SIZE(oper_states))
d04bc300 SH	72	fprintf(f, "state %#x ", state);
	73	else
	74	fprintf(f, "state %s ", oper_states[state]);
	75	}
	76
b1b7ce0f VY	77	static void print_portstate(FILE *f, __u8 state)
	78	{
	79	if (state <= BR_STATE_BLOCKING)
	80	fprintf(f, "state %s ", port_states[state]);
	81	else
	82	fprintf(f, "state (%d) ", state);
	83	}
	84
	85	static void print_onoff(FILE f, char flag, __u8 val)
	86	{
	87	fprintf(f, "%s %s ", flag, val ? "on" : "off");
	88	}
	89
	90	static void print_hwmode(FILE *f, __u16 mode)
	91	{
df4b043f	92	if (mode >= ARRAY_SIZE(hw_mode))
b1b7ce0f VY	93	fprintf(f, "hwmode %#hx ", mode);
	94	else
	95	fprintf(f, "hwmode %s ", hw_mode[mode]);
	96	}
	97
d04bc300 SH	98	int print_linkinfo(const struct sockaddr_nl *who,
	99	struct nlmsghdr n, void arg)
	100	{
	101	FILE *fp = arg;
d04bc300	102	struct ifinfomsg *ifi = NLMSG_DATA(n);
df4b043f	103	struct rtattr *tb[IFLA_MAX+1];
fcac9665 SP	104	int len = n->nlmsg_len;
fcac9665 SP	105	const char *name;
d04bc300 SH	106
	107	len -= NLMSG_LENGTH(sizeof(*ifi));
	108	if (len < 0) {
	109	fprintf(stderr, "Message too short!\n");
	110	return -1;
df4b043f	111	}
d04bc300 SH	112
	113	if (!(ifi->ifi_family == AF_BRIDGE \|\| ifi->ifi_family == AF_UNSPEC))
	114	return 0;
	115
64108901 VY	116	if (filter_index && filter_index != ifi->ifi_index)
	117	return 0;
	118
b1b7ce0f	119	parse_rtattr_flags(tb, IFLA_MAX, IFLA_RTA(ifi), len, NLA_F_NESTED);
d04bc300	120
fcac9665 SP	121	name = get_ifname_rta(ifi->ifi_index, tb[IFLA_IFNAME]);
fcac9665 SP	122	if (!name)
d04bc300	123	return -1;
d04bc300 SH	124
	125	if (n->nlmsg_type == RTM_DELLINK)
	126	fprintf(fp, "Deleted ");
	127
f5b50a18 SP	128	fprintf(fp, "%d: ", ifi->ifi_index);
	129
	130	print_name_and_link("%s: ", COLOR_NONE, name, tb);
d04bc300	131
38df7ac9	132	if (tb[IFLA_OPERSTATE])
1465db1a	133	print_operstate(fp, rta_getattr_u8(tb[IFLA_OPERSTATE]));
38df7ac9	134
d04bc300 SH	135	print_link_flags(fp, ifi->ifi_flags);
	136
	137	if (tb[IFLA_MTU])
1465db1a	138	fprintf(fp, "mtu %u ", rta_getattr_u32(tb[IFLA_MTU]));
d04bc300	139
45d3a6ef SP	140	if (tb[IFLA_MASTER]) {
	141	int master = rta_getattr_u32(tb[IFLA_MASTER]);
	142
	143	fprintf(fp, "master %s ", ll_index_to_name(master));
	144	}
d04bc300 SH	145
d04bc300 SH	146	if (tb[IFLA_PROTINFO]) {
b1b7ce0f VY	147	if (tb[IFLA_PROTINFO]->rta_type & NLA_F_NESTED) {
	148	struct rtattr *prtb[IFLA_BRPORT_MAX+1];
	149
	150	parse_rtattr_nested(prtb, IFLA_BRPORT_MAX,
	151	tb[IFLA_PROTINFO]);
	152
	153	if (prtb[IFLA_BRPORT_STATE])
	154	print_portstate(fp,
	155	rta_getattr_u8(prtb[IFLA_BRPORT_STATE]));
	156	if (prtb[IFLA_BRPORT_PRIORITY])
	157	fprintf(fp, "priority %hu ",
	158	rta_getattr_u16(prtb[IFLA_BRPORT_PRIORITY]));
	159	if (prtb[IFLA_BRPORT_COST])
	160	fprintf(fp, "cost %u ",
	161	rta_getattr_u32(prtb[IFLA_BRPORT_COST]));
4cd20da1 SH	162
	163	if (show_details) {
	164	fprintf(fp, "%s ", _SL_);
	165
	166	if (prtb[IFLA_BRPORT_MODE])
	167	print_onoff(fp, "hairpin",
	168	rta_getattr_u8(prtb[IFLA_BRPORT_MODE]));
	169	if (prtb[IFLA_BRPORT_GUARD])
	170	print_onoff(fp, "guard",
	171	rta_getattr_u8(prtb[IFLA_BRPORT_GUARD]));
	172	if (prtb[IFLA_BRPORT_PROTECT])
	173	print_onoff(fp, "root_block",
	174	rta_getattr_u8(prtb[IFLA_BRPORT_PROTECT]));
	175	if (prtb[IFLA_BRPORT_FAST_LEAVE])
	176	print_onoff(fp, "fastleave",
	177	rta_getattr_u8(prtb[IFLA_BRPORT_FAST_LEAVE]));
f0f4ab60 VY	178	if (prtb[IFLA_BRPORT_LEARNING])
	179	print_onoff(fp, "learning",
	180	rta_getattr_u8(prtb[IFLA_BRPORT_LEARNING]));
674bb438 SF	181	if (prtb[IFLA_BRPORT_LEARNING_SYNC])
	182	print_onoff(fp, "learning_sync",
	183	rta_getattr_u8(prtb[IFLA_BRPORT_LEARNING_SYNC]));
f0f4ab60 VY	184	if (prtb[IFLA_BRPORT_UNICAST_FLOOD])
	185	print_onoff(fp, "flood",
	186	rta_getattr_u8(prtb[IFLA_BRPORT_UNICAST_FLOOD]));
9208b4e7 NA	187	if (prtb[IFLA_BRPORT_MCAST_FLOOD])
	188	print_onoff(fp, "mcast_flood",
	189	rta_getattr_u8(prtb[IFLA_BRPORT_MCAST_FLOOD]));
41973a47 RP	190	if (prtb[IFLA_BRPORT_NEIGH_SUPPRESS])
	191	print_onoff(fp, "neigh_suppress",
	192	rta_getattr_u8(prtb[IFLA_BRPORT_NEIGH_SUPPRESS]));
8cfde5c9 RP	193	if (prtb[IFLA_BRPORT_VLAN_TUNNEL])
	194	print_onoff(fp, "vlan_tunnel",
	195	rta_getattr_u8(prtb[IFLA_BRPORT_VLAN_TUNNEL]));
4cd20da1	196	}
b1b7ce0f VY	197	} else
b1b7ce0f VY	198	print_portstate(fp, rta_getattr_u8(tb[IFLA_PROTINFO]));
d04bc300 SH	199	}
d04bc300 SH	200
b1b7ce0f VY	201	if (tb[IFLA_AF_SPEC]) {
	202	/* This is reported by HW devices that have some bridging
	203	* capabilities.
	204	*/
	205	struct rtattr *aftb[IFLA_BRIDGE_MAX+1];
	206
	207	parse_rtattr_nested(aftb, IFLA_BRIDGE_MAX, tb[IFLA_AF_SPEC]);
	208
a40d0827 JF	209	if (aftb[IFLA_BRIDGE_MODE])
a40d0827 JF	210	print_hwmode(fp, rta_getattr_u16(aftb[IFLA_BRIDGE_MODE]));
52fd1fe3 RM	211	if (show_details) {
	212	if (aftb[IFLA_BRIDGE_VLAN_INFO]) {
	213	fprintf(fp, "\n");
	214	print_vlan_info(fp, tb[IFLA_AF_SPEC],
	215	ifi->ifi_index);
	216	}
	217	}
b1b7ce0f	218	}
d04bc300 SH	219
	220	fprintf(fp, "\n");
	221	fflush(fp);
	222	return 0;
	223	}
64108901 VY	224
	225	static void usage(void)
	226	{
	227	fprintf(stderr, "Usage: bridge link set dev DEV [ cost COST ] [ priority PRIO ] [ state STATE ]\n");
	228	fprintf(stderr, " [ guard {on \| off} ]\n");
df4b043f	229	fprintf(stderr, " [ hairpin {on \| off} ]\n");
64108901 VY	230	fprintf(stderr, " [ fastleave {on \| off} ]\n");
64108901 VY	231	fprintf(stderr, " [ root_block {on \| off} ]\n");
f0f4ab60	232	fprintf(stderr, " [ learning {on \| off} ]\n");
674bb438	233	fprintf(stderr, " [ learning_sync {on \| off} ]\n");
f0f4ab60	234	fprintf(stderr, " [ flood {on \| off} ]\n");
9208b4e7	235	fprintf(stderr, " [ mcast_flood {on \| off} ]\n");
8cfde5c9 RP	236	fprintf(stderr, " [ neigh_suppress {on \| off} ]\n");
8cfde5c9 RP	237	fprintf(stderr, " [ vlan_tunnel {on \| off} ]\n");
64108901	238	fprintf(stderr, " [ hwmode {vepa \| veb} ]\n");
22a98f51	239	fprintf(stderr, " [ self ] [ master ]\n");
64108901 VY	240	fprintf(stderr, " bridge link show [dev DEV]\n");
	241	exit(-1);
	242	}
	243
	244	static bool on_off(char arg, __s8 attr, char *val)
	245	{
	246	if (strcmp(val, "on") == 0)
	247	*attr = 1;
	248	else if (strcmp(val, "off") == 0)
	249	*attr = 0;
	250	else {
	251	fprintf(stderr,
	252	"Error: argument of \"%s\" must be \"on\" or \"off\"\n",
	253	arg);
	254	return false;
	255	}
	256
	257	return true;
	258	}
	259
	260	static int brlink_modify(int argc, char **argv)
	261	{
	262	struct {
	263	struct nlmsghdr n;
	264	struct ifinfomsg ifm;
	265	char buf[512];
d17b136f PS	266	} req = {
	267	.n.nlmsg_len = NLMSG_LENGTH(sizeof(struct ifinfomsg)),
	268	.n.nlmsg_flags = NLM_F_REQUEST,
	269	.n.nlmsg_type = RTM_SETLINK,
	270	.ifm.ifi_family = PF_BRIDGE,
	271	};
64108901	272	char *d = NULL;
41973a47	273	__s8 neigh_suppress = -1;
f0f4ab60	274	__s8 learning = -1;
674bb438	275	__s8 learning_sync = -1;
f0f4ab60	276	__s8 flood = -1;
8cfde5c9	277	__s8 vlan_tunnel = -1;
9208b4e7	278	__s8 mcast_flood = -1;
64108901 VY	279	__s8 hairpin = -1;
	280	__s8 bpdu_guard = -1;
	281	__s8 fast_leave = -1;
b1b7ce0f	282	__s8 root_block = -1;
64108901 VY	283	__u32 cost = 0;
	284	__s16 priority = -1;
	285	__s8 state = -1;
	286	__s16 mode = -1;
6fdb4658	287	__u16 flags = 0;
64108901 VY	288	struct rtattr *nest;
64108901 VY	289
64108901 VY	290	while (argc > 0) {
	291	if (strcmp(*argv, "dev") == 0) {
	292	NEXT_ARG();
	293	d = *argv;
	294	} else if (strcmp(*argv, "guard") == 0) {
	295	NEXT_ARG();
	296	if (!on_off("guard", &bpdu_guard, *argv))
42ecedd4	297	return -1;
64108901 VY	298	} else if (strcmp(*argv, "hairpin") == 0) {
	299	NEXT_ARG();
	300	if (!on_off("hairping", &hairpin, *argv))
42ecedd4	301	return -1;
64108901 VY	302	} else if (strcmp(*argv, "fastleave") == 0) {
	303	NEXT_ARG();
	304	if (!on_off("fastleave", &fast_leave, *argv))
42ecedd4	305	return -1;
b1b7ce0f VY	306	} else if (strcmp(*argv, "root_block") == 0) {
	307	NEXT_ARG();
	308	if (!on_off("root_block", &root_block, *argv))
42ecedd4	309	return -1;
f0f4ab60 VY	310	} else if (strcmp(*argv, "learning") == 0) {
	311	NEXT_ARG();
	312	if (!on_off("learning", &learning, *argv))
42ecedd4	313	return -1;
674bb438 SF	314	} else if (strcmp(*argv, "learning_sync") == 0) {
	315	NEXT_ARG();
	316	if (!on_off("learning_sync", &learning_sync, *argv))
42ecedd4	317	return -1;
f0f4ab60 VY	318	} else if (strcmp(*argv, "flood") == 0) {
	319	NEXT_ARG();
	320	if (!on_off("flood", &flood, *argv))
42ecedd4	321	return -1;
9208b4e7 NA	322	} else if (strcmp(*argv, "mcast_flood") == 0) {
	323	NEXT_ARG();
	324	if (!on_off("mcast_flood", &mcast_flood, *argv))
	325	return -1;
a40d0827	326	} else if (strcmp(*argv, "cost") == 0) {
64108901 VY	327	NEXT_ARG();
64108901 VY	328	cost = atoi(*argv);
a40d0827	329	} else if (strcmp(*argv, "priority") == 0) {
64108901 VY	330	NEXT_ARG();
64108901 VY	331	priority = atoi(*argv);
a40d0827	332	} else if (strcmp(*argv, "state") == 0) {
64108901	333	NEXT_ARG();
6b8c871d	334	char *endptr;
62000e51	335	size_t nstates = ARRAY_SIZE(port_states);
df4b043f	336
6b8c871d AP	337	state = strtol(*argv, &endptr, 10);
	338	if (!(*argv != '\0' && endptr == '\0')) {
	339	for (state = 0; state < nstates; state++)
	340	if (strcmp(port_states[state], *argv) == 0)
	341	break;
	342	if (state == nstates) {
	343	fprintf(stderr,
	344	"Error: invalid STP port state\n");
42ecedd4	345	return -1;
6b8c871d AP	346	}
6b8c871d AP	347	}
a40d0827	348	} else if (strcmp(*argv, "hwmode") == 0) {
64108901	349	NEXT_ARG();
a40d0827	350	flags = BRIDGE_FLAGS_SELF;
64108901 VY	351	if (strcmp(*argv, "vepa") == 0)
	352	mode = BRIDGE_MODE_VEPA;
	353	else if (strcmp(*argv, "veb") == 0)
	354	mode = BRIDGE_MODE_VEB;
	355	else {
	356	fprintf(stderr,
df4b043f	357	"Mode argument must be \"vepa\" or \"veb\".\n");
42ecedd4	358	return -1;
64108901	359	}
6fdb4658	360	} else if (strcmp(*argv, "self") == 0) {
22a98f51 RP	361	flags \|= BRIDGE_FLAGS_SELF;
	362	} else if (strcmp(*argv, "master") == 0) {
	363	flags \|= BRIDGE_FLAGS_MASTER;
41973a47 RP	364	} else if (strcmp(*argv, "neigh_suppress") == 0) {
	365	NEXT_ARG();
	366	if (!on_off("neigh_suppress", &neigh_suppress,
	367	*argv))
	368	return -1;
8cfde5c9 RP	369	} else if (strcmp(*argv, "vlan_tunnel") == 0) {
	370	NEXT_ARG();
	371	if (!on_off("vlan_tunnel", &vlan_tunnel,
	372	*argv))
	373	return -1;
64108901 VY	374	} else {
	375	usage();
	376	}
	377	argc--; argv++;
	378	}
	379	if (d == NULL) {
	380	fprintf(stderr, "Device is a required argument.\n");
42ecedd4	381	return -1;
64108901 VY	382	}
	383
	384
	385	req.ifm.ifi_index = ll_name_to_index(d);
	386	if (req.ifm.ifi_index == 0) {
	387	fprintf(stderr, "Cannot find bridge device \"%s\"\n", d);
42ecedd4	388	return -1;
64108901 VY	389	}
	390
	391	/* Nested PROTINFO attribute. Contains: port flags, cost, priority and
	392	* state.
	393	*/
	394	nest = addattr_nest(&req.n, sizeof(req),
	395	IFLA_PROTINFO \| NLA_F_NESTED);
	396	/* Flags first */
	397	if (bpdu_guard >= 0)
	398	addattr8(&req.n, sizeof(req), IFLA_BRPORT_GUARD, bpdu_guard);
	399	if (hairpin >= 0)
	400	addattr8(&req.n, sizeof(req), IFLA_BRPORT_MODE, hairpin);
	401	if (fast_leave >= 0)
	402	addattr8(&req.n, sizeof(req), IFLA_BRPORT_FAST_LEAVE,
	403	fast_leave);
b1b7ce0f VY	404	if (root_block >= 0)
b1b7ce0f VY	405	addattr8(&req.n, sizeof(req), IFLA_BRPORT_PROTECT, root_block);
f0f4ab60 VY	406	if (flood >= 0)
f0f4ab60 VY	407	addattr8(&req.n, sizeof(req), IFLA_BRPORT_UNICAST_FLOOD, flood);
9208b4e7 NA	408	if (mcast_flood >= 0)
	409	addattr8(&req.n, sizeof(req), IFLA_BRPORT_MCAST_FLOOD,
	410	mcast_flood);
f0f4ab60 VY	411	if (learning >= 0)
f0f4ab60 VY	412	addattr8(&req.n, sizeof(req), IFLA_BRPORT_LEARNING, learning);
674bb438 SF	413	if (learning_sync >= 0)
	414	addattr8(&req.n, sizeof(req), IFLA_BRPORT_LEARNING_SYNC,
	415	learning_sync);
64108901 VY	416
	417	if (cost > 0)
	418	addattr32(&req.n, sizeof(req), IFLA_BRPORT_COST, cost);
	419
	420	if (priority >= 0)
	421	addattr16(&req.n, sizeof(req), IFLA_BRPORT_PRIORITY, priority);
	422
	423	if (state >= 0)
	424	addattr8(&req.n, sizeof(req), IFLA_BRPORT_STATE, state);
	425
41973a47 RP	426	if (neigh_suppress != -1)
	427	addattr8(&req.n, sizeof(req), IFLA_BRPORT_NEIGH_SUPPRESS,
	428	neigh_suppress);
8cfde5c9 RP	429	if (vlan_tunnel != -1)
	430	addattr8(&req.n, sizeof(req), IFLA_BRPORT_VLAN_TUNNEL,
	431	vlan_tunnel);
41973a47	432
64108901 VY	433	addattr_nest_end(&req.n, nest);
64108901 VY	434
6fdb4658 RP	435	/* IFLA_AF_SPEC nested attribute. Contains IFLA_BRIDGE_FLAGS that
	436	* designates master or self operation and IFLA_BRIDGE_MODE
	437	* for hw 'vepa' or 'veb' operation modes. The hwmodes are
	438	* only valid in 'self' mode on some devices so far.
64108901	439	*/
6fdb4658	440	if (mode >= 0 \|\| flags > 0) {
64108901 VY	441	nest = addattr_nest(&req.n, sizeof(req), IFLA_AF_SPEC);
64108901 VY	442
6fdb4658 RP	443	if (flags > 0)
6fdb4658 RP	444	addattr16(&req.n, sizeof(req), IFLA_BRIDGE_FLAGS, flags);
64108901 VY	445
	446	if (mode >= 0)
	447	addattr16(&req.n, sizeof(req), IFLA_BRIDGE_MODE, mode);
	448
	449	addattr_nest_end(&req.n, nest);
	450	}
	451
86bf43c7	452	if (rtnl_talk(&rth, &req.n, NULL) < 0)
42ecedd4	453	return -1;
64108901 VY	454
	455	return 0;
	456	}
	457
	458	static int brlink_show(int argc, char **argv)
	459	{
	460	char *filter_dev = NULL;
	461
	462	while (argc > 0) {
	463	if (strcmp(*argv, "dev") == 0) {
	464	NEXT_ARG();
	465	if (filter_dev)
	466	duparg("dev", *argv);
	467	filter_dev = *argv;
	468	}
	469	argc--; argv++;
	470	}
	471
	472	if (filter_dev) {
	473	if ((filter_index = ll_name_to_index(filter_dev)) == 0) {
	474	fprintf(stderr, "Cannot find device \"%s\"\n",
	475	filter_dev);
	476	return -1;
	477	}
	478	}
	479
fab9a18a RM	480	if (show_details) {
	481	if (rtnl_wilddump_req_filter(&rth, PF_BRIDGE, RTM_GETLINK,
	482	(compress_vlans ?
	483	RTEXT_FILTER_BRVLAN_COMPRESSED :
	484	RTEXT_FILTER_BRVLAN)) < 0) {
	485	perror("Cannon send dump request");
	486	exit(1);
	487	}
	488	} else {
	489	if (rtnl_wilddump_request(&rth, PF_BRIDGE, RTM_GETLINK) < 0) {
	490	perror("Cannon send dump request");
	491	exit(1);
	492	}
64108901 VY	493	}
	494
	495	if (rtnl_dump_filter(&rth, print_linkinfo, stdout) < 0) {
	496	fprintf(stderr, "Dump terminated\n");
	497	exit(1);
	498	}
	499	return 0;
	500	}
	501
	502	int do_link(int argc, char **argv)
	503	{
	504	ll_init_map(&rth);
	505	if (argc > 0) {
	506	if (matches(*argv, "set") == 0 \|\|
	507	matches(*argv, "change") == 0)
	508	return brlink_modify(argc-1, argv+1);
	509	if (matches(*argv, "show") == 0 \|\|
	510	matches(*argv, "lst") == 0 \|\|
	511	matches(*argv, "list") == 0)
	512	return brlink_show(argc-1, argv+1);
	513	if (matches(*argv, "help") == 0)
	514	usage();
	515	} else
	516	return brlink_show(0, NULL);
	517
	518	fprintf(stderr, "Command \"%s\" is unknown, try \"bridge link help\".\n", *argv);
	519	exit(-1);
	520	}