Home | History | Annotate | Line # | Download | only in brconfig
brconfig.c revision 1.1
      1 /*	$NetBSD: brconfig.c,v 1.1 2001/08/17 21:42:11 thorpej Exp $	*/
      2 
      3 /*
      4  * Copyright 2001 Wasabi Systems, Inc.
      5  * All rights reserved.
      6  *
      7  * Written by Jason R. Thorpe for Wasabi Systems, Inc.
      8  *
      9  * Redistribution and use in source and binary forms, with or without
     10  * modification, are permitted provided that the following conditions
     11  * are met:
     12  * 1. Redistributions of source code must retain the above copyright
     13  *    notice, this list of conditions and the following disclaimer.
     14  * 2. Redistributions in binary form must reproduce the above copyright
     15  *    notice, this list of conditions and the following disclaimer in the
     16  *    documentation and/or other materials provided with the distribution.
     17  * 3. All advertising materials mentioning features or use of this software
     18  *    must display the following acknowledgement:
     19  *	This product includes software developed for the NetBSD Project by
     20  *	Wasabi Systems, Inc.
     21  * 4. The name of Wasabi Systems, Inc. may not be used to endorse
     22  *    or promote products derived from this software without specific prior
     23  *    written permission.
     24  *
     25  * THIS SOFTWARE IS PROVIDED BY WASABI SYSTEMS, INC. ``AS IS'' AND
     26  * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED
     27  * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
     28  * PURPOSE ARE DISCLAIMED.  IN NO EVENT SHALL WASABI SYSTEMS, INC
     29  * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
     30  * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
     31  * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
     32  * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
     33  * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
     34  * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
     35  * POSSIBILITY OF SUCH DAMAGE.
     36  */
     37 
     38 /*
     39  * brconfig(8) --
     40  *
     41  *	Configuration utility for the bridge(4) driver.
     42  */
     43 
     44 #include <sys/param.h>
     45 #include <sys/socket.h>
     46 #include <sys/ioctl.h>
     47 
     48 #include <net/if.h>
     49 #include <net/if_ether.h>
     50 #include <net/if_bridgevar.h>
     51 
     52 #include <ctype.h>
     53 #include <err.h>
     54 #include <errno.h>
     55 #include <stdio.h>
     56 #include <stdlib.h>
     57 #include <string.h>
     58 #include <unistd.h>
     59 #include <ifaddrs.h>
     60 
     61 struct command {
     62 	const char *cmd_keyword;
     63 	int	cmd_argcnt;
     64 	int	cmd_flags;
     65 	void	(*cmd_func)(const struct command *, int, const char *,
     66 		    char **);
     67 };
     68 
     69 #define	CMD_INVERT	0x01	/* "invert" the sense of the command */
     70 
     71 void	cmd_add(const struct command *, int, const char *, char **);
     72 void	cmd_delete(const struct command *, int, const char *, char **);
     73 void	cmd_up(const struct command *, int, const char *, char **);
     74 void	cmd_down(const struct command *, int, const char *, char **);
     75 void	cmd_discover(const struct command *, int, const char *, char **);
     76 void	cmd_learn(const struct command *, int, const char *, char **);
     77 void	cmd_flush(const struct command *, int, const char *, char **);
     78 void	cmd_flushall(const struct command *, int, const char *, char **);
     79 void	cmd_static(const struct command *, int, const char *, char **);
     80 void	cmd_deladdr(const struct command *, int, const char *, char **);
     81 void	cmd_addr(const struct command *, int, const char *, char **);
     82 void	cmd_maxaddr(const struct command *, int, const char *, char **);
     83 void	cmd_hellotime(const struct command *, int, const char *, char **);
     84 void	cmd_fwddelay(const struct command *, int, const char *, char **);
     85 void	cmd_maxage(const struct command *, int, const char *, char **);
     86 void	cmd_priority(const struct command *, int, const char *, char **);
     87 void	cmd_ifpriority(const struct command *, int, const char *, char **);
     88 void	cmd_timeout(const struct command *, int, const char *, char **);
     89 void	cmd_stp(const struct command *, int, const char *, char **);
     90 
     91 const struct command command_table[] = {
     92 	{ "add",		1,	0,		cmd_add },
     93 	{ "delete",		1,	0,		cmd_delete },
     94 
     95 	{ "up",			0,	0,		cmd_up },
     96 	{ "down",		0,	0,		cmd_down },
     97 
     98 	{ "discover",		1,	0,		cmd_discover },
     99 	{ "-discover",		1,	CMD_INVERT,	cmd_discover },
    100 
    101 	{ "learn",		1,	0,		cmd_learn },
    102 	{ "-learn",		1,	CMD_INVERT,	cmd_learn },
    103 
    104 	{ "flush",		0,	0,		cmd_flush },
    105 	{ "flushall",		0,	0,		cmd_flushall },
    106 
    107 	{ "static",		2,	0,		cmd_static },
    108 	{ "deladdr",		1,	0,		cmd_deladdr },
    109 
    110 	{ "addr",		0,	0,		cmd_addr },
    111 	{ "maxaddr",		1,	0,		cmd_maxaddr },
    112 
    113 	{ "hellotime",		1,	0,		cmd_hellotime },
    114 	{ "fwddelay",		1,	0,		cmd_fwddelay },
    115 	{ "maxage",		1,	0,		cmd_maxage },
    116 	{ "priority",		1,	0,		cmd_priority },
    117 	{ "ifpriority",		2,	0,		cmd_ifpriority },
    118 	{ "timeout",		1,	0,		cmd_timeout },
    119 	{ "stp",		1,	0,		cmd_stp },
    120 	{ "-stp",		1,	CMD_INVERT,	cmd_stp },
    121 
    122 	{ NULL,			0,	0,		NULL },
    123 };
    124 
    125 void	printall(int);
    126 void	status(int, const char *);
    127 int	is_bridge(const char *);
    128 void	show_config(int, const char *, const char *);
    129 void	show_interfaces(int, const char *, const char *);
    130 void	show_addresses(int, const char *, const char *);
    131 int	get_val(const char *, u_long *);
    132 int	do_cmd(int, const char *, u_long, void *, size_t, int);
    133 void	do_ifflag(int, const char *, int, int);
    134 void	do_bridgeflag(int, const char *, const char *, int, int);
    135 
    136 void	printb(const char *, u_int, const char *);
    137 
    138 int	main(int, char *[]);
    139 void	usage(void);
    140 
    141 int	aflag;
    142 
    143 struct ifreq g_ifr;
    144 int	g_ifr_updated;
    145 
    146 #define	IFFBITS \
    147 "\020\1UP\2BROADCAST\3DEBUG\4LOOPBACK\5POINTOPOINT\6NOTRAILERS\7RUNNING\10NOARP\
    148 \11PROMISC\12ALLMULTI\13OACTIVE\14SIMPLEX\15LINK0\16LINK1\17LINK2\20MULTICAST"
    149 
    150 int
    151 main(int argc, char *argv[])
    152 {
    153 	const struct command *cmd;
    154 	char *bridge;
    155 	int sock, ch;
    156 
    157 	if (argc < 2)
    158 		usage();
    159 
    160 	sock = socket(AF_INET, SOCK_DGRAM, 0);
    161 	if (sock < 0)
    162 		err(1, "socket");
    163 
    164 	while ((ch = getopt(argc, argv, "a")) != -1) {
    165 		switch (ch) {
    166 		case 'a':
    167 			aflag = 1;
    168 			break;
    169 
    170 		default:
    171 			usage();
    172 		}
    173 	}
    174 
    175 	argc -= optind;
    176 	argv += optind;
    177 
    178 	if (aflag) {
    179 		if (argc != 0)
    180 			usage();
    181 		printall(sock);
    182 		exit(0);
    183 	}
    184 
    185 	if (argc == 0)
    186 		usage();
    187 
    188 	bridge = argv[0];
    189 
    190 	if (is_bridge(bridge) == 0)
    191 		errx(1, "%s is not a bridge", bridge);
    192 
    193 	/* Get a copy of the interface flags. */
    194 	strlcpy(g_ifr.ifr_name, bridge, sizeof(g_ifr.ifr_name));
    195 	if (ioctl(sock, SIOCGIFFLAGS, &g_ifr) < 0)
    196 		err(1, "unable to get interface flags");
    197 
    198 	argc--;
    199 	argv++;
    200 
    201 	if (argc == 0) {
    202 		status(sock, bridge);
    203 		exit(0);
    204 	}
    205 
    206 	while (argc != 0) {
    207 		for (cmd = command_table; cmd->cmd_keyword != NULL; cmd++) {
    208 			if (strcmp(cmd->cmd_keyword, argv[0]) == 0)
    209 				break;
    210 		}
    211 		if (cmd->cmd_keyword == NULL)
    212 			errx(1, "unknown command: %s", argv[0]);
    213 
    214 		argc--;
    215 		argv++;
    216 
    217 		if (argc < cmd->cmd_argcnt)
    218 			errx(1, "command %s requires %d argument%s",
    219 			    cmd->cmd_keyword, cmd->cmd_argcnt,
    220 			    cmd->cmd_argcnt == 1 ? "" : "s");
    221 
    222 		(*cmd->cmd_func)(cmd, sock, bridge, argv);
    223 
    224 		argc -= cmd->cmd_argcnt;
    225 		argv += cmd->cmd_argcnt;
    226 	}
    227 
    228 	/* If the flags changed, update them. */
    229 	if (g_ifr_updated && ioctl(sock, SIOCSIFFLAGS, &g_ifr) < 0)
    230 		err(1, "unable to set interface flags");
    231 
    232 	exit (0);
    233 }
    234 
    235 void
    236 usage(void)
    237 {
    238 	static const char *usage_strings[] = {
    239 		"-a",
    240 		"<bridge>",
    241 		"<bridge> up|down",
    242 		"<bridge> addr",
    243 		"<bridge> add <interface>",
    244 		"<bridge> delete <interface>",
    245 		"<bridge> maxaddr <size>",
    246 		"<bridge> timeout <time>",
    247 		"<bridge> static <interface> <address>",
    248 		"<bridge> deladdr <address>",
    249 		"<bridge> flush",
    250 		"<bridge> flushall",
    251 		"<bridge> discover|-discover <interface>",
    252 		"<bridge> learn|-learn <interface>",
    253 		"<bridge> stp|-stp <interface>",
    254 		"<bridge> maxage <time>",
    255 		"<bridge> fwddelay <time>",
    256 		"<bridge> hellotime <time>",
    257 		"<bridge> priority <value>",
    258 		"<bridge> ifpriority <interface> <value>",
    259 		NULL,
    260 	};
    261 	extern const char *__progname;
    262 	int i;
    263 
    264 	for (i = 0; usage_strings[i] != NULL; i++)
    265 		fprintf(stderr, "%s %s %s\n",
    266 		    i == 0 ? "usage:" : "      ",
    267 		    __progname, usage_strings[i]);
    268 
    269 	exit(1);
    270 }
    271 
    272 int
    273 is_bridge(const char *bridge)
    274 {
    275 
    276 	if (strncmp(bridge, "bridge", 6) != 0 ||
    277 	    isdigit(bridge[6]) == 0)
    278 		return (0);
    279 
    280 	return (1);
    281 }
    282 
    283 void
    284 printb(const char *s, u_int v, const char *bits)
    285 {
    286 	int i, any = 0;
    287 	char c;
    288 
    289 	if (bits && *bits == 8)
    290 		printf("%s=%o", s, v);
    291 	else
    292 		printf("%s=%x", s, v);
    293 	bits++;
    294 	if (bits) {
    295 		putchar('<');
    296 		while ((i = *bits++) != 0) {
    297 			if (v & (1 << (i-1))) {
    298 				if (any)
    299 					putchar(',');
    300 				any = 1;
    301 				for (; (c = *bits) > 32; bits++)
    302 					putchar(c);
    303 			} else
    304 				for (; *bits > 32; bits++)
    305 					;
    306 		}
    307 		putchar('>');
    308 	}
    309 }
    310 
    311 void
    312 printall(int sock)
    313 {
    314 	struct ifaddrs *ifap, *ifa;
    315 	char *p;
    316 
    317 	if (getifaddrs(&ifap) != 0)
    318 		err(1, "getifaddrs");
    319 	p = NULL;
    320 	for (ifa = ifap; ifa != NULL; ifa = ifa->ifa_next) {
    321 		if (is_bridge(ifa->ifa_name) == 0)
    322 			continue;
    323 		if (p != NULL && strcmp(p, ifa->ifa_name) == 0)
    324 			continue;
    325 		p = ifa->ifa_name;
    326 		status(sock, ifa->ifa_name);
    327 	}
    328 
    329 	freeifaddrs(ifap);
    330 }
    331 
    332 void
    333 status(int sock, const char *bridge)
    334 {
    335 	struct ifreq ifr;
    336 	struct ifbrparam bp1, bp2;
    337 
    338 	memset(&ifr, 0, sizeof(ifr));
    339 
    340 	strlcpy(ifr.ifr_name, bridge, sizeof(ifr.ifr_name));
    341 	if (ioctl(sock, SIOCGIFFLAGS, &ifr) < 0)
    342 		err(1, "unable to get flags");
    343 
    344 	printf("%s: ", bridge);
    345 	printb("flags", ifr.ifr_flags, IFFBITS);
    346 	printf("\n");
    347 
    348 	printf("\tConfiguration:\n");
    349 	show_config(sock, bridge, "\t\t");
    350 
    351 	printf("\tInterfaces:\n");
    352 	show_interfaces(sock, bridge, "\t\t");
    353 
    354 	if (do_cmd(sock, bridge, BRDGGCACHE, &bp1, sizeof(bp1), 0) < 0)
    355 		err(1, "unable to get address cache size");
    356 	if (do_cmd(sock, bridge, BRDGGTO, &bp2, sizeof(bp2), 0) < 0)
    357 		err(1, "unable to get address timeout");
    358 
    359 	printf("\tAddress cache (max cache: %u, timeout: %u):\n",
    360 	    bp1.ifbrp_csize, bp2.ifbrp_ctime);
    361 	show_addresses(sock, bridge, "\t\t");
    362 }
    363 
    364 void
    365 show_config(int sock, const char *bridge, const char *prefix)
    366 {
    367 	struct ifbrparam param;
    368 	u_int16_t pri;
    369 	u_int8_t ht, fd, ma;
    370 
    371 	if (do_cmd(sock, bridge, BRDGGPRI, &param, sizeof(param), 0) < 0)
    372 		err(1, "unable to get bridge priority");
    373 	pri = param.ifbrp_prio;
    374 
    375 	if (do_cmd(sock, bridge, BRDGGHT, &param, sizeof(param), 0) < 0)
    376 		err(1, "unable to get hellotime");
    377 	ht = param.ifbrp_hellotime;
    378 
    379 	if (do_cmd(sock, bridge, BRDGGFD, &param, sizeof(param), 0) < 0)
    380 		err(1, "unable to get forward delay");
    381 	fd = param.ifbrp_fwddelay;
    382 
    383 	if (do_cmd(sock, bridge, BRDGGMA, &param, sizeof(param), 0) < 0)
    384 		err(1, "unable to get max age");
    385 	ma = param.ifbrp_maxage;
    386 
    387 	printf("%spriority %u hellotime %u fwddelay %u maxage %u\n",
    388 	    prefix, pri, ht, fd, ma);
    389 }
    390 
    391 void
    392 show_interfaces(int sock, const char *bridge, const char *prefix)
    393 {
    394 	static const char *stpstates[] = {
    395 		"disabled",
    396 		"listening",
    397 		"learning",
    398 		"forwarding",
    399 		"blocking",
    400 	};
    401 	struct ifbifconf bifc;
    402 	struct ifbreq *req;
    403 	char *inbuf = NULL;
    404 	int i, len = 8192;
    405 
    406 	for (;;) {
    407 		bifc.ifbic_len = len;
    408 		bifc.ifbic_buf = inbuf = realloc(inbuf, len);
    409 		if (inbuf == NULL)
    410 			err(1, "unabel to allocate interface buffer");
    411 		if (do_cmd(sock, bridge, BRDGGIFS, &bifc, sizeof(bifc), 0) < 0)
    412 			err(1, "unable to get interface list");
    413 		if ((bifc.ifbic_len + sizeof(*req)) < len)
    414 			break;
    415 		len *= 2;
    416 	}
    417 
    418 	for (i = 0; i < bifc.ifbic_len / sizeof(*req); i++) {
    419 		req = bifc.ifbic_req + i;
    420 		printf("%s%s ", prefix, req->ifbr_ifsname);
    421 		printb("flags", req->ifbr_ifsflags, IFBIFBITS);
    422 		printf("\n");
    423 		printf("%s\t", prefix);
    424 		printf("port %u priority %u",
    425 		    req->ifbr_portno, req->ifbr_priority);
    426 		if (req->ifbr_ifsflags & IFBIF_STP) {
    427 			if (req->ifbr_state <
    428 			    sizeof(stpstates) / sizeof(stpstates[0]))
    429 				printf(" %s", stpstates[req->ifbr_state]);
    430 			else
    431 				printf(" <unknown state %d>",
    432 				    req->ifbr_state);
    433 		}
    434 		printf("\n");
    435 	}
    436 
    437 	free(inbuf);
    438 }
    439 
    440 void
    441 show_addresses(int sock, const char *bridge, const char *prefix)
    442 {
    443 	struct ifbaconf ifbac;
    444 	struct ifbareq *ifba;
    445 	char *inbuf = NULL;
    446 	int i, len = 8192;
    447 	struct ether_addr ea;
    448 
    449 	for (;;) {
    450 		ifbac.ifbac_len = len;
    451 		ifbac.ifbac_buf = inbuf = realloc(inbuf, len);
    452 		if (inbuf == NULL)
    453 			err(1, "unable to allocate address buffer");
    454 		if (do_cmd(sock, bridge, BRDGRTS, &ifbac, sizeof(ifbac), 0) < 0)
    455 			err(1, "unable to get address cache");
    456 		if ((ifbac.ifbac_len + sizeof(*ifba)) < len)
    457 			break;
    458 		len *= 2;
    459 	}
    460 
    461 	for (i = 0; i < ifbac.ifbac_len / sizeof(*ifba); i++) {
    462 		ifba = ifbac.ifbac_req + i;
    463 		memcpy(ea.ether_addr_octet, ifba->ifba_dst,
    464 		    sizeof(ea.ether_addr_octet));
    465 		printf("%s%s %s %lu ", prefix, ether_ntoa(&ea),
    466 		    ifba->ifba_ifsname, ifba->ifba_expire);
    467 		printb("flags", ifba->ifba_flags, IFBAFBITS);
    468 		printf("\n");
    469 	}
    470 
    471 	free(inbuf);
    472 }
    473 
    474 int
    475 get_val(const char *cp, u_long *valp)
    476 {
    477 	char *endptr;
    478 	u_long val;
    479 
    480 	errno = 0;
    481 	val = strtoul(cp, &endptr, 0);
    482 	if (cp[0] == '\0' || endptr[0] != '\0' || errno == ERANGE)
    483 		return (-1);
    484 
    485 	*valp = val;
    486 	return (0);
    487 }
    488 
    489 int
    490 do_cmd(int sock, const char *bridge, u_long op, void *arg, size_t argsize,
    491     int set)
    492 {
    493 	struct ifdrv ifd;
    494 
    495 	memset(&ifd, 0, sizeof(ifd));
    496 
    497 	strlcpy(ifd.ifd_name, bridge, sizeof(ifd.ifd_name));
    498 	ifd.ifd_cmd = op;
    499 	ifd.ifd_len = argsize;
    500 	ifd.ifd_data = arg;
    501 
    502 	return (ioctl(sock, set ? SIOCSDRVSPEC : SIOCGDRVSPEC, &ifd));
    503 }
    504 
    505 void
    506 do_ifflag(int sock, const char *bridge, int flag, int set)
    507 {
    508 
    509 	if (set)
    510 		g_ifr.ifr_flags |= flag;
    511 	else
    512 		g_ifr.ifr_flags &= ~flag;
    513 
    514 	g_ifr_updated = 1;
    515 }
    516 
    517 void
    518 do_bridgeflag(int sock, const char *bridge, const char *ifs, int flag,
    519     int set)
    520 {
    521 	struct ifbreq req;
    522 
    523 	strlcpy(req.ifbr_ifsname, ifs, sizeof(req.ifbr_ifsname));
    524 
    525 	if (do_cmd(sock, bridge, BRDGGIFFLGS, &req, sizeof(req), 0) < 0)
    526 		err(1, "unable to get bridge flags");
    527 
    528 	if (set)
    529 		req.ifbr_ifsflags |= flag;
    530 	else
    531 		req.ifbr_ifsflags &= ~flag;
    532 
    533 	if (do_cmd(sock, bridge, BRDGSIFFLGS, &req, sizeof(req), 1) < 0)
    534 		err(1, "unable to set bridge flags");
    535 }
    536 
    537 void
    538 cmd_add(const struct command *cmd, int sock, const char *bridge,
    539     char **argv)
    540 {
    541 	struct ifbreq req;
    542 
    543 	memset(&req, 0, sizeof(req));
    544 
    545 	strlcpy(req.ifbr_ifsname, argv[0], sizeof(req.ifbr_ifsname));
    546 	if (do_cmd(sock, bridge, BRDGADD, &req, sizeof(req), 1) < 0)
    547 		err(1, "%s %s", cmd->cmd_keyword, argv[0]);
    548 }
    549 
    550 void
    551 cmd_delete(const struct command *cmd, int sock, const char *bridge,
    552     char **argv)
    553 {
    554 	struct ifbreq req;
    555 
    556 	memset(&req, 0, sizeof(req));
    557 	strlcpy(req.ifbr_ifsname, argv[0], sizeof(req.ifbr_ifsname));
    558 	if (do_cmd(sock, bridge, BRDGDEL, &req, sizeof(req), 1) < 0)
    559 		err(1, "%s %s", cmd->cmd_keyword, argv[0]);
    560 }
    561 
    562 void
    563 cmd_up(const struct command *cmd, int sock, const char *bridge,
    564     char **argv)
    565 {
    566 
    567 	do_ifflag(sock, bridge, IFF_UP, 1);
    568 }
    569 
    570 void
    571 cmd_down(const struct command *cmd, int sock, const char *bridge,
    572     char **argv)
    573 {
    574 
    575 	do_ifflag(sock, bridge, IFF_UP, 0);
    576 }
    577 
    578 void
    579 cmd_discover(const struct command *cmd, int sock, const char *bridge,
    580     char **argv)
    581 {
    582 
    583 	do_bridgeflag(sock, bridge, argv[0], IFBIF_DISCOVER,
    584 	    (cmd->cmd_flags & CMD_INVERT) ? 0 : 1);
    585 }
    586 
    587 void
    588 cmd_learn(const struct command *cmd, int sock, const char *bridge,
    589     char **argv)
    590 {
    591 
    592 	do_bridgeflag(sock, bridge, argv[0], IFBIF_LEARNING,
    593 	    (cmd->cmd_flags & CMD_INVERT) ? 0 : 1);
    594 }
    595 
    596 void
    597 cmd_stp(const struct command *cmd, int sock, const char *bridge,
    598     char **argv)
    599 {
    600 
    601 	do_bridgeflag(sock, bridge, argv[0], IFBIF_STP,
    602 	    (cmd->cmd_flags & CMD_INVERT) ? 0 : 1);
    603 }
    604 
    605 void
    606 cmd_flush(const struct command *cmd, int sock, const char *bridge,
    607     char **argv)
    608 {
    609 	struct ifbreq req;
    610 
    611 	memset(&req, 0, sizeof(req));
    612 	req.ifbr_ifsflags = IFBF_FLUSHDYN;
    613 	if (do_cmd(sock, bridge, BRDGFLUSH, &req, sizeof(req), 1) < 0)
    614 		err(1, "%s", cmd->cmd_keyword);
    615 }
    616 
    617 void
    618 cmd_flushall(const struct command *cmd, int sock, const char *bridge,
    619     char **argv)
    620 {
    621 	struct ifbreq req;
    622 
    623 	memset(&req, 0, sizeof(req));
    624 	req.ifbr_ifsflags = IFBF_FLUSHALL;
    625 	if (do_cmd(sock, bridge, BRDGFLUSH, &req, sizeof(req), 1) < 0)
    626 		err(1, "%s", cmd->cmd_keyword);
    627 }
    628 
    629 void
    630 cmd_static(const struct command *cmd, int sock, const char *bridge,
    631     char **argv)
    632 {
    633 	struct ifbareq req;
    634 	struct ether_addr *ea;
    635 
    636 	memset(&req, 0, sizeof(req));
    637 	strlcpy(req.ifba_ifsname, argv[0], sizeof(req.ifba_ifsname));
    638 
    639 	ea = ether_aton(argv[1]);
    640 	if (ea == NULL)
    641 		errx(1, "%s: invalid address: %s", cmd->cmd_keyword, argv[1]);
    642 
    643 	memcpy(req.ifba_dst, ea->ether_addr_octet, sizeof(req.ifba_dst));
    644 	req.ifba_flags = IFBAF_STATIC;
    645 
    646 	if (do_cmd(sock, bridge, BRDGSADDR, &req, sizeof(req), 1) < 0)
    647 		err(1, "%s %s %s", cmd->cmd_keyword, argv[0], argv[1]);
    648 }
    649 
    650 void
    651 cmd_deladdr(const struct command *cmd, int sock, const char *bridge,
    652     char **argv)
    653 {
    654 	struct ifbareq req;
    655 	struct ether_addr *ea;
    656 
    657 	memset(&req, 0, sizeof(req));
    658 
    659 	ea = ether_aton(argv[0]);
    660 	if (ea == NULL)
    661 		errx(1, "%s: invalid address: %s", cmd->cmd_keyword, argv[0]);
    662 
    663 	memcpy(req.ifba_dst, ea->ether_addr_octet, sizeof(req.ifba_dst));
    664 
    665 	if (do_cmd(sock, bridge, BRDGDADDR, &req, sizeof(req), 1) < 0)
    666 		err(1, "%s %s", cmd->cmd_keyword, argv[0]);
    667 }
    668 
    669 void
    670 cmd_addr(const struct command *cmd, int sock, const char *bridge,
    671     char **argv)
    672 {
    673 
    674 	show_addresses(sock, bridge, "\t");
    675 }
    676 
    677 void
    678 cmd_maxaddr(const struct command *cmd, int sock, const char *bridge,
    679     char **argv)
    680 {
    681 	struct ifbrparam param;
    682 	u_long val;
    683 
    684 	if (get_val(argv[0], &val) < 0 || (val & ~0xffffffff) != 0)
    685 		errx(1, "%s: invalid value: %s", cmd->cmd_keyword, argv[0]);
    686 
    687 	param.ifbrp_csize = val & 0xffffffff;
    688 
    689 	if (do_cmd(sock, bridge, BRDGSCACHE, &param, sizeof(param), 1) < 0)
    690 		err(1, "%s %s", cmd->cmd_keyword, argv[0]);
    691 }
    692 
    693 void
    694 cmd_hellotime(const struct command *cmd, int sock, const char *bridge,
    695     char **argv)
    696 {
    697 	struct ifbrparam param;
    698 	u_long val;
    699 
    700 	if (get_val(argv[0], &val) < 0 || (val & ~0xff) != 0)
    701 		errx(1, "%s: invalid value: %s", cmd->cmd_keyword, argv[0]);
    702 
    703 	param.ifbrp_hellotime = val & 0xff;
    704 
    705 	if (do_cmd(sock, bridge, BRDGSHT, &param, sizeof(param), 1) < 0)
    706 		err(1, "%s %s", cmd->cmd_keyword, argv[0]);
    707 }
    708 
    709 void
    710 cmd_fwddelay(const struct command *cmd, int sock, const char *bridge,
    711     char **argv)
    712 {
    713 	struct ifbrparam param;
    714 	u_long val;
    715 
    716 	if (get_val(argv[0], &val) < 0 || (val & ~0xff) != 0)
    717 		errx(1, "%s: invalid value: %s", cmd->cmd_keyword, argv[0]);
    718 
    719 	param.ifbrp_fwddelay = val & 0xff;
    720 
    721 	if (do_cmd(sock, bridge, BRDGSFD, &param, sizeof(param), 1) < 0)
    722 		err(1, "%s %s", cmd->cmd_keyword, argv[0]);
    723 }
    724 
    725 void
    726 cmd_maxage(const struct command *cmd, int sock, const char *bridge,
    727     char **argv)
    728 {
    729 	struct ifbrparam param;
    730 	u_long val;
    731 
    732 	if (get_val(argv[0], &val) < 0 || (val & ~0xff) != 0)
    733 		errx(1, "%s: invalid value: %s", cmd->cmd_keyword, argv[0]);
    734 
    735 	param.ifbrp_maxage = val & 0xff;
    736 
    737 	if (do_cmd(sock, bridge, BRDGSMA, &param, sizeof(param), 1) < 0)
    738 		err(1, "%s %s", cmd->cmd_keyword, argv[0]);
    739 }
    740 
    741 void
    742 cmd_priority(const struct command *cmd, int sock, const char *bridge,
    743     char **argv)
    744 {
    745 	struct ifbrparam param;
    746 	u_long val;
    747 
    748 	if (get_val(argv[0], &val) < 0 || (val & ~0xffff) != 0)
    749 		errx(1, "%s: invalid value: %s", cmd->cmd_keyword, argv[0]);
    750 
    751 	param.ifbrp_prio = val & 0xffff;
    752 
    753 	if (do_cmd(sock, bridge, BRDGSPRI, &param, sizeof(param), 1) < 0)
    754 		err(1, "%s %s", cmd->cmd_keyword, argv[0]);
    755 }
    756 
    757 void
    758 cmd_ifpriority(const struct command *cmd, int sock, const char *bridge,
    759     char **argv)
    760 {
    761 	struct ifbreq req;
    762 	u_long val;
    763 
    764 	memset(&req, 0, sizeof(req));
    765 
    766 	if (get_val(argv[1], &val) < 0 || (val & ~0xff) != 0)
    767 		errx(1, "%s: invalid value: %s", cmd->cmd_keyword, argv[1]);
    768 
    769 	strlcpy(req.ifbr_ifsname, argv[0], sizeof(req.ifbr_ifsname));
    770 	req.ifbr_priority = val & 0xff;
    771 
    772 	if (do_cmd(sock, bridge, BRDGSPRI, &req, sizeof(req), 1) < 0)
    773 		err(1, "%s %s", cmd->cmd_keyword, argv[0]);
    774 }
    775 
    776 void
    777 cmd_timeout(const struct command *cmd, int sock, const char *bridge,
    778     char **argv)
    779 {
    780 	struct ifbrparam param;
    781 	u_long val;
    782 
    783 	if (get_val(argv[0], &val) < 0 || (val & ~0xffffffff) != 0)
    784 		errx(1, "%s: invalid value: %s", cmd->cmd_keyword, argv[0]);
    785 
    786 	param.ifbrp_ctime = val & 0xffffffff;
    787 
    788 	if (do_cmd(sock, bridge, BRDGSTO, &param, sizeof(param), 1) < 0)
    789 		err(1, "%s %s", cmd->cmd_keyword, argv[0]);
    790 }
    791