[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: %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]) {
		int iflink = rta_getattr_u32(tb[IFLA_LINK]);

		fprintf(fp, "@%s: ",
			iflink ? ll_index_to_name(iflink) : "NONE");
	} 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]) {
		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
	128	fprintf(fp, "%d: %s ", ifi->ifi_index,
1465db1a	129	tb[IFLA_IFNAME] ? rta_getattr_str(tb[IFLA_IFNAME]) : "<nil>");
d04bc300	130
38df7ac9	131	if (tb[IFLA_OPERSTATE])
1465db1a	132	print_operstate(fp, rta_getattr_u8(tb[IFLA_OPERSTATE]));
38df7ac9	133
d04bc300	134	if (tb[IFLA_LINK]) {
1465db1a	135	int iflink = rta_getattr_u32(tb[IFLA_LINK]);
df4b043f	136
45d3a6ef SP	137	fprintf(fp, "@%s: ",
45d3a6ef SP	138	iflink ? ll_index_to_name(iflink) : "NONE");
1465db1a	139	} else
d04bc300	140	fprintf(fp, ": ");
d04bc300 SH	141
	142	print_link_flags(fp, ifi->ifi_flags);
	143
	144	if (tb[IFLA_MTU])
1465db1a	145	fprintf(fp, "mtu %u ", rta_getattr_u32(tb[IFLA_MTU]));
d04bc300	146
45d3a6ef SP	147	if (tb[IFLA_MASTER]) {
	148	int master = rta_getattr_u32(tb[IFLA_MASTER]);
	149
	150	fprintf(fp, "master %s ", ll_index_to_name(master));
	151	}
d04bc300 SH	152
d04bc300 SH	153	if (tb[IFLA_PROTINFO]) {
b1b7ce0f VY	154	if (tb[IFLA_PROTINFO]->rta_type & NLA_F_NESTED) {
	155	struct rtattr *prtb[IFLA_BRPORT_MAX+1];
	156
	157	parse_rtattr_nested(prtb, IFLA_BRPORT_MAX,
	158	tb[IFLA_PROTINFO]);
	159
	160	if (prtb[IFLA_BRPORT_STATE])
	161	print_portstate(fp,
	162	rta_getattr_u8(prtb[IFLA_BRPORT_STATE]));
	163	if (prtb[IFLA_BRPORT_PRIORITY])
	164	fprintf(fp, "priority %hu ",
	165	rta_getattr_u16(prtb[IFLA_BRPORT_PRIORITY]));
	166	if (prtb[IFLA_BRPORT_COST])
	167	fprintf(fp, "cost %u ",
	168	rta_getattr_u32(prtb[IFLA_BRPORT_COST]));
4cd20da1 SH	169
	170	if (show_details) {
	171	fprintf(fp, "%s ", _SL_);
	172
	173	if (prtb[IFLA_BRPORT_MODE])
	174	print_onoff(fp, "hairpin",
	175	rta_getattr_u8(prtb[IFLA_BRPORT_MODE]));
	176	if (prtb[IFLA_BRPORT_GUARD])
	177	print_onoff(fp, "guard",
	178	rta_getattr_u8(prtb[IFLA_BRPORT_GUARD]));
	179	if (prtb[IFLA_BRPORT_PROTECT])
	180	print_onoff(fp, "root_block",
	181	rta_getattr_u8(prtb[IFLA_BRPORT_PROTECT]));
	182	if (prtb[IFLA_BRPORT_FAST_LEAVE])
	183	print_onoff(fp, "fastleave",
	184	rta_getattr_u8(prtb[IFLA_BRPORT_FAST_LEAVE]));
f0f4ab60 VY	185	if (prtb[IFLA_BRPORT_LEARNING])
	186	print_onoff(fp, "learning",
	187	rta_getattr_u8(prtb[IFLA_BRPORT_LEARNING]));
674bb438 SF	188	if (prtb[IFLA_BRPORT_LEARNING_SYNC])
	189	print_onoff(fp, "learning_sync",
	190	rta_getattr_u8(prtb[IFLA_BRPORT_LEARNING_SYNC]));
f0f4ab60 VY	191	if (prtb[IFLA_BRPORT_UNICAST_FLOOD])
	192	print_onoff(fp, "flood",
	193	rta_getattr_u8(prtb[IFLA_BRPORT_UNICAST_FLOOD]));
9208b4e7 NA	194	if (prtb[IFLA_BRPORT_MCAST_FLOOD])
	195	print_onoff(fp, "mcast_flood",
	196	rta_getattr_u8(prtb[IFLA_BRPORT_MCAST_FLOOD]));
41973a47 RP	197	if (prtb[IFLA_BRPORT_NEIGH_SUPPRESS])
	198	print_onoff(fp, "neigh_suppress",
	199	rta_getattr_u8(prtb[IFLA_BRPORT_NEIGH_SUPPRESS]));
8cfde5c9 RP	200	if (prtb[IFLA_BRPORT_VLAN_TUNNEL])
	201	print_onoff(fp, "vlan_tunnel",
	202	rta_getattr_u8(prtb[IFLA_BRPORT_VLAN_TUNNEL]));
4cd20da1	203	}
b1b7ce0f VY	204	} else
b1b7ce0f VY	205	print_portstate(fp, rta_getattr_u8(tb[IFLA_PROTINFO]));
d04bc300 SH	206	}
d04bc300 SH	207
b1b7ce0f VY	208	if (tb[IFLA_AF_SPEC]) {
	209	/* This is reported by HW devices that have some bridging
	210	* capabilities.
	211	*/
	212	struct rtattr *aftb[IFLA_BRIDGE_MAX+1];
	213
	214	parse_rtattr_nested(aftb, IFLA_BRIDGE_MAX, tb[IFLA_AF_SPEC]);
	215
a40d0827 JF	216	if (aftb[IFLA_BRIDGE_MODE])
a40d0827 JF	217	print_hwmode(fp, rta_getattr_u16(aftb[IFLA_BRIDGE_MODE]));
52fd1fe3 RM	218	if (show_details) {
	219	if (aftb[IFLA_BRIDGE_VLAN_INFO]) {
	220	fprintf(fp, "\n");
	221	print_vlan_info(fp, tb[IFLA_AF_SPEC],
	222	ifi->ifi_index);
	223	}
	224	}
b1b7ce0f	225	}
d04bc300 SH	226
	227	fprintf(fp, "\n");
	228	fflush(fp);
	229	return 0;
	230	}
64108901 VY	231
	232	static void usage(void)
	233	{
	234	fprintf(stderr, "Usage: bridge link set dev DEV [ cost COST ] [ priority PRIO ] [ state STATE ]\n");
	235	fprintf(stderr, " [ guard {on \| off} ]\n");
df4b043f	236	fprintf(stderr, " [ hairpin {on \| off} ]\n");
64108901 VY	237	fprintf(stderr, " [ fastleave {on \| off} ]\n");
64108901 VY	238	fprintf(stderr, " [ root_block {on \| off} ]\n");
f0f4ab60	239	fprintf(stderr, " [ learning {on \| off} ]\n");
674bb438	240	fprintf(stderr, " [ learning_sync {on \| off} ]\n");
f0f4ab60	241	fprintf(stderr, " [ flood {on \| off} ]\n");
9208b4e7	242	fprintf(stderr, " [ mcast_flood {on \| off} ]\n");
8cfde5c9 RP	243	fprintf(stderr, " [ neigh_suppress {on \| off} ]\n");
8cfde5c9 RP	244	fprintf(stderr, " [ vlan_tunnel {on \| off} ]\n");
64108901	245	fprintf(stderr, " [ hwmode {vepa \| veb} ]\n");
22a98f51	246	fprintf(stderr, " [ self ] [ master ]\n");
64108901 VY	247	fprintf(stderr, " bridge link show [dev DEV]\n");
	248	exit(-1);
	249	}
	250
	251	static bool on_off(char arg, __s8 attr, char *val)
	252	{
	253	if (strcmp(val, "on") == 0)
	254	*attr = 1;
	255	else if (strcmp(val, "off") == 0)
	256	*attr = 0;
	257	else {
	258	fprintf(stderr,
	259	"Error: argument of \"%s\" must be \"on\" or \"off\"\n",
	260	arg);
	261	return false;
	262	}
	263
	264	return true;
	265	}
	266
	267	static int brlink_modify(int argc, char **argv)
	268	{
	269	struct {
	270	struct nlmsghdr n;
	271	struct ifinfomsg ifm;
	272	char buf[512];
d17b136f PS	273	} req = {
	274	.n.nlmsg_len = NLMSG_LENGTH(sizeof(struct ifinfomsg)),
	275	.n.nlmsg_flags = NLM_F_REQUEST,
	276	.n.nlmsg_type = RTM_SETLINK,
	277	.ifm.ifi_family = PF_BRIDGE,
	278	};
64108901	279	char *d = NULL;
41973a47	280	__s8 neigh_suppress = -1;
f0f4ab60	281	__s8 learning = -1;
674bb438	282	__s8 learning_sync = -1;
f0f4ab60	283	__s8 flood = -1;
8cfde5c9	284	__s8 vlan_tunnel = -1;
9208b4e7	285	__s8 mcast_flood = -1;
64108901 VY	286	__s8 hairpin = -1;
	287	__s8 bpdu_guard = -1;
	288	__s8 fast_leave = -1;
b1b7ce0f	289	__s8 root_block = -1;
64108901 VY	290	__u32 cost = 0;
	291	__s16 priority = -1;
	292	__s8 state = -1;
	293	__s16 mode = -1;
6fdb4658	294	__u16 flags = 0;
64108901 VY	295	struct rtattr *nest;
64108901 VY	296
64108901 VY	297	while (argc > 0) {
	298	if (strcmp(*argv, "dev") == 0) {
	299	NEXT_ARG();
	300	d = *argv;
	301	} else if (strcmp(*argv, "guard") == 0) {
	302	NEXT_ARG();
	303	if (!on_off("guard", &bpdu_guard, *argv))
42ecedd4	304	return -1;
64108901 VY	305	} else if (strcmp(*argv, "hairpin") == 0) {
	306	NEXT_ARG();
	307	if (!on_off("hairping", &hairpin, *argv))
42ecedd4	308	return -1;
64108901 VY	309	} else if (strcmp(*argv, "fastleave") == 0) {
	310	NEXT_ARG();
	311	if (!on_off("fastleave", &fast_leave, *argv))
42ecedd4	312	return -1;
b1b7ce0f VY	313	} else if (strcmp(*argv, "root_block") == 0) {
	314	NEXT_ARG();
	315	if (!on_off("root_block", &root_block, *argv))
42ecedd4	316	return -1;
f0f4ab60 VY	317	} else if (strcmp(*argv, "learning") == 0) {
	318	NEXT_ARG();
	319	if (!on_off("learning", &learning, *argv))
42ecedd4	320	return -1;
674bb438 SF	321	} else if (strcmp(*argv, "learning_sync") == 0) {
	322	NEXT_ARG();
	323	if (!on_off("learning_sync", &learning_sync, *argv))
42ecedd4	324	return -1;
f0f4ab60 VY	325	} else if (strcmp(*argv, "flood") == 0) {
	326	NEXT_ARG();
	327	if (!on_off("flood", &flood, *argv))
42ecedd4	328	return -1;
9208b4e7 NA	329	} else if (strcmp(*argv, "mcast_flood") == 0) {
	330	NEXT_ARG();
	331	if (!on_off("mcast_flood", &mcast_flood, *argv))
	332	return -1;
a40d0827	333	} else if (strcmp(*argv, "cost") == 0) {
64108901 VY	334	NEXT_ARG();
64108901 VY	335	cost = atoi(*argv);
a40d0827	336	} else if (strcmp(*argv, "priority") == 0) {
64108901 VY	337	NEXT_ARG();
64108901 VY	338	priority = atoi(*argv);
a40d0827	339	} else if (strcmp(*argv, "state") == 0) {
64108901	340	NEXT_ARG();
6b8c871d	341	char *endptr;
62000e51	342	size_t nstates = ARRAY_SIZE(port_states);
df4b043f	343
6b8c871d AP	344	state = strtol(*argv, &endptr, 10);
	345	if (!(*argv != '\0' && endptr == '\0')) {
	346	for (state = 0; state < nstates; state++)
	347	if (strcmp(port_states[state], *argv) == 0)
	348	break;
	349	if (state == nstates) {
	350	fprintf(stderr,
	351	"Error: invalid STP port state\n");
42ecedd4	352	return -1;
6b8c871d AP	353	}
6b8c871d AP	354	}
a40d0827	355	} else if (strcmp(*argv, "hwmode") == 0) {
64108901	356	NEXT_ARG();
a40d0827	357	flags = BRIDGE_FLAGS_SELF;
64108901 VY	358	if (strcmp(*argv, "vepa") == 0)
	359	mode = BRIDGE_MODE_VEPA;
	360	else if (strcmp(*argv, "veb") == 0)
	361	mode = BRIDGE_MODE_VEB;
	362	else {
	363	fprintf(stderr,
df4b043f	364	"Mode argument must be \"vepa\" or \"veb\".\n");
42ecedd4	365	return -1;
64108901	366	}
6fdb4658	367	} else if (strcmp(*argv, "self") == 0) {
22a98f51 RP	368	flags \|= BRIDGE_FLAGS_SELF;
	369	} else if (strcmp(*argv, "master") == 0) {
	370	flags \|= BRIDGE_FLAGS_MASTER;
41973a47 RP	371	} else if (strcmp(*argv, "neigh_suppress") == 0) {
	372	NEXT_ARG();
	373	if (!on_off("neigh_suppress", &neigh_suppress,
	374	*argv))
	375	return -1;
8cfde5c9 RP	376	} else if (strcmp(*argv, "vlan_tunnel") == 0) {
	377	NEXT_ARG();
	378	if (!on_off("vlan_tunnel", &vlan_tunnel,
	379	*argv))
	380	return -1;
64108901 VY	381	} else {
	382	usage();
	383	}
	384	argc--; argv++;
	385	}
	386	if (d == NULL) {
	387	fprintf(stderr, "Device is a required argument.\n");
42ecedd4	388	return -1;
64108901 VY	389	}
	390
	391
	392	req.ifm.ifi_index = ll_name_to_index(d);
	393	if (req.ifm.ifi_index == 0) {
	394	fprintf(stderr, "Cannot find bridge device \"%s\"\n", d);
42ecedd4	395	return -1;
64108901 VY	396	}
	397
	398	/* Nested PROTINFO attribute. Contains: port flags, cost, priority and
	399	* state.
	400	*/
	401	nest = addattr_nest(&req.n, sizeof(req),
	402	IFLA_PROTINFO \| NLA_F_NESTED);
	403	/* Flags first */
	404	if (bpdu_guard >= 0)
	405	addattr8(&req.n, sizeof(req), IFLA_BRPORT_GUARD, bpdu_guard);
	406	if (hairpin >= 0)
	407	addattr8(&req.n, sizeof(req), IFLA_BRPORT_MODE, hairpin);
	408	if (fast_leave >= 0)
	409	addattr8(&req.n, sizeof(req), IFLA_BRPORT_FAST_LEAVE,
	410	fast_leave);
b1b7ce0f VY	411	if (root_block >= 0)
b1b7ce0f VY	412	addattr8(&req.n, sizeof(req), IFLA_BRPORT_PROTECT, root_block);
f0f4ab60 VY	413	if (flood >= 0)
f0f4ab60 VY	414	addattr8(&req.n, sizeof(req), IFLA_BRPORT_UNICAST_FLOOD, flood);
9208b4e7 NA	415	if (mcast_flood >= 0)
	416	addattr8(&req.n, sizeof(req), IFLA_BRPORT_MCAST_FLOOD,
	417	mcast_flood);
f0f4ab60 VY	418	if (learning >= 0)
f0f4ab60 VY	419	addattr8(&req.n, sizeof(req), IFLA_BRPORT_LEARNING, learning);
674bb438 SF	420	if (learning_sync >= 0)
	421	addattr8(&req.n, sizeof(req), IFLA_BRPORT_LEARNING_SYNC,
	422	learning_sync);
64108901 VY	423
	424	if (cost > 0)
	425	addattr32(&req.n, sizeof(req), IFLA_BRPORT_COST, cost);
	426
	427	if (priority >= 0)
	428	addattr16(&req.n, sizeof(req), IFLA_BRPORT_PRIORITY, priority);
	429
	430	if (state >= 0)
	431	addattr8(&req.n, sizeof(req), IFLA_BRPORT_STATE, state);
	432
41973a47 RP	433	if (neigh_suppress != -1)
	434	addattr8(&req.n, sizeof(req), IFLA_BRPORT_NEIGH_SUPPRESS,
	435	neigh_suppress);
8cfde5c9 RP	436	if (vlan_tunnel != -1)
	437	addattr8(&req.n, sizeof(req), IFLA_BRPORT_VLAN_TUNNEL,
	438	vlan_tunnel);
41973a47	439
64108901 VY	440	addattr_nest_end(&req.n, nest);
64108901 VY	441
6fdb4658 RP	442	/* IFLA_AF_SPEC nested attribute. Contains IFLA_BRIDGE_FLAGS that
	443	* designates master or self operation and IFLA_BRIDGE_MODE
	444	* for hw 'vepa' or 'veb' operation modes. The hwmodes are
	445	* only valid in 'self' mode on some devices so far.
64108901	446	*/
6fdb4658	447	if (mode >= 0 \|\| flags > 0) {
64108901 VY	448	nest = addattr_nest(&req.n, sizeof(req), IFLA_AF_SPEC);
64108901 VY	449
6fdb4658 RP	450	if (flags > 0)
6fdb4658 RP	451	addattr16(&req.n, sizeof(req), IFLA_BRIDGE_FLAGS, flags);
64108901 VY	452
	453	if (mode >= 0)
	454	addattr16(&req.n, sizeof(req), IFLA_BRIDGE_MODE, mode);
	455
	456	addattr_nest_end(&req.n, nest);
	457	}
	458
86bf43c7	459	if (rtnl_talk(&rth, &req.n, NULL) < 0)
42ecedd4	460	return -1;
64108901 VY	461
	462	return 0;
	463	}
	464
	465	static int brlink_show(int argc, char **argv)
	466	{
	467	char *filter_dev = NULL;
	468
	469	while (argc > 0) {
	470	if (strcmp(*argv, "dev") == 0) {
	471	NEXT_ARG();
	472	if (filter_dev)
	473	duparg("dev", *argv);
	474	filter_dev = *argv;
	475	}
	476	argc--; argv++;
	477	}
	478
	479	if (filter_dev) {
	480	if ((filter_index = ll_name_to_index(filter_dev)) == 0) {
	481	fprintf(stderr, "Cannot find device \"%s\"\n",
	482	filter_dev);
	483	return -1;
	484	}
	485	}
	486
fab9a18a RM	487	if (show_details) {
	488	if (rtnl_wilddump_req_filter(&rth, PF_BRIDGE, RTM_GETLINK,
	489	(compress_vlans ?
	490	RTEXT_FILTER_BRVLAN_COMPRESSED :
	491	RTEXT_FILTER_BRVLAN)) < 0) {
	492	perror("Cannon send dump request");
	493	exit(1);
	494	}
	495	} else {
	496	if (rtnl_wilddump_request(&rth, PF_BRIDGE, RTM_GETLINK) < 0) {
	497	perror("Cannon send dump request");
	498	exit(1);
	499	}
64108901 VY	500	}
	501
	502	if (rtnl_dump_filter(&rth, print_linkinfo, stdout) < 0) {
	503	fprintf(stderr, "Dump terminated\n");
	504	exit(1);
	505	}
	506	return 0;
	507	}
	508
	509	int do_link(int argc, char **argv)
	510	{
	511	ll_init_map(&rth);
	512	if (argc > 0) {
	513	if (matches(*argv, "set") == 0 \|\|
	514	matches(*argv, "change") == 0)
	515	return brlink_modify(argc-1, argv+1);
	516	if (matches(*argv, "show") == 0 \|\|
	517	matches(*argv, "lst") == 0 \|\|
	518	matches(*argv, "list") == 0)
	519	return brlink_show(argc-1, argv+1);
	520	if (matches(*argv, "help") == 0)
	521	usage();
	522	} else
	523	return brlink_show(0, NULL);
	524
	525	fprintf(stderr, "Command \"%s\" is unknown, try \"bridge link help\".\n", *argv);
	526	exit(-1);
	527	}