xref: /netbsd-src/sbin/brconfig/brconfig.c (revision 27bd3432214c5543236b60ccc0cca9ff4401de71)
1 /*	$NetBSD: brconfig.c,v 1.18 2024/09/03 08:00:30 ozaki-r 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 #include <sys/cdefs.h>
44 
45 #ifndef lint
46 __RCSID("$NetBSD: brconfig.c,v 1.18 2024/09/03 08:00:30 ozaki-r Exp $");
47 #endif
48 
49 
50 #include <sys/param.h>
51 #include <sys/socket.h>
52 #include <sys/ioctl.h>
53 
54 #include <net/if.h>
55 #include <net/if_ether.h>
56 #include <net/if_bridgevar.h>
57 
58 #include <ctype.h>
59 #include <err.h>
60 #include <errno.h>
61 #include <stdio.h>
62 #include <stdlib.h>
63 #include <string.h>
64 #include <unistd.h>
65 #include <ifaddrs.h>
66 
67 struct command {
68 	const char *cmd_keyword;
69 	int	cmd_argcnt;
70 	int	cmd_flags;
71 	void	(*cmd_func)(const struct command *, int, const char *,
72 		    char **);
73 };
74 
75 #define	CMD_INVERT	0x01	/* "invert" the sense of the command */
76 
77 static void	cmd_add(const struct command *, int, const char *, char **);
78 static void	cmd_delete(const struct command *, int, const char *, char **);
79 static void	cmd_up(const struct command *, int, const char *, char **);
80 static void	cmd_down(const struct command *, int, const char *, char **);
81 static void	cmd_discover(const struct command *, int, const char *, char **);
82 static void	cmd_learn(const struct command *, int, const char *, char **);
83 static void	cmd_flush(const struct command *, int, const char *, char **);
84 static void	cmd_flushall(const struct command *, int, const char *, char **);
85 static void	cmd_static(const struct command *, int, const char *, char **);
86 static void	cmd_deladdr(const struct command *, int, const char *, char **);
87 static void	cmd_addr(const struct command *, int, const char *, char **);
88 static void	cmd_maxaddr(const struct command *, int, const char *, char **);
89 static void	cmd_hellotime(const struct command *, int, const char *, char **);
90 static void	cmd_fwddelay(const struct command *, int, const char *, char **);
91 static void	cmd_maxage(const struct command *, int, const char *, char **);
92 static void	cmd_priority(const struct command *, int, const char *, char **);
93 static void	cmd_ifpriority(const struct command *, int, const char *, char **);
94 static void	cmd_ifpathcost(const struct command *, int, const char *, char **);
95 static void	cmd_timeout(const struct command *, int, const char *, char **);
96 static void	cmd_stp(const struct command *, int, const char *, char **);
97 static void	cmd_ipf(const struct command *, int, const char *, char **);
98 static void	cmd_protect(const struct command *, int, const char *, char **);
99 
100 static const struct command command_table[] = {
101 	{ "add",		1,	0,		cmd_add },
102 	{ "delete",		1,	0,		cmd_delete },
103 
104 	{ "up",			0,	0,		cmd_up },
105 	{ "down",		0,	0,		cmd_down },
106 
107 	{ "discover",		1,	0,		cmd_discover },
108 	{ "-discover",		1,	CMD_INVERT,	cmd_discover },
109 
110 	{ "learn",		1,	0,		cmd_learn },
111 	{ "-learn",		1,	CMD_INVERT,	cmd_learn },
112 
113 	{ "flush",		0,	0,		cmd_flush },
114 	{ "flushall",		0,	0,		cmd_flushall },
115 
116 	{ "static",		2,	0,		cmd_static },
117 	{ "deladdr",		1,	0,		cmd_deladdr },
118 
119 	{ "addr",		0,	0,		cmd_addr },
120 	{ "maxaddr",		1,	0,		cmd_maxaddr },
121 
122 	{ "hellotime",		1,	0,		cmd_hellotime },
123 	{ "fwddelay",		1,	0,		cmd_fwddelay },
124 	{ "maxage",		1,	0,		cmd_maxage },
125 	{ "priority",		1,	0,		cmd_priority },
126 	{ "ifpriority",		2,	0,		cmd_ifpriority },
127 	{ "ifpathcost",		2,	0,		cmd_ifpathcost },
128 	{ "timeout",		1,	0,		cmd_timeout },
129 	{ "stp",		1,	0,		cmd_stp },
130 	{ "-stp",		1,	CMD_INVERT,	cmd_stp },
131 
132         { "ipf",                0,      0,              cmd_ipf },
133         { "-ipf",               0,      CMD_INVERT,     cmd_ipf },
134 
135 	{ "protect",		1,	0,		cmd_protect },
136 	{ "-protect",		1,	CMD_INVERT,	cmd_protect },
137 
138 	{ NULL,			0,	0,		NULL },
139 };
140 
141 static void	printall(int);
142 static void	status(int, const char *);
143 static int	is_bridge(const char *);
144 static void	show_config(int, const char *, const char *);
145 static void	show_interfaces(int, const char *, const char *);
146 static void	show_addresses(int, const char *, const char *);
147 static int	get_val(const char *, u_long *);
148 #define	do_cmd(a,b,c,d,e,f)	do_cmd2((a),(b),(c),(d),(e),NULL,(f))
149 static int	do_cmd2(int, const char *, u_long, void *, size_t, size_t *, int);
150 static void	do_ifflag(int, const char *, int, int);
151 static void	do_bridgeflag(int, const char *, const char *, int, int);
152 
153 static void	printb(const char *, u_int, const char *);
154 
155 __dead static void	usage(void);
156 
157 static int	aflag;
158 
159 static struct ifreq g_ifr;
160 static int	g_ifr_updated;
161 
162 int
163 main(int argc, char *argv[])
164 {
165 	const struct command *cmd;
166 	char *bridge;
167 	int sock, ch;
168 
169 	if (argc < 2)
170 		usage();
171 
172 	sock = socket(AF_INET, SOCK_DGRAM, 0);
173 	if (sock < 0)
174 		err(1, "socket");
175 
176 	while ((ch = getopt(argc, argv, "a")) != -1) {
177 		switch (ch) {
178 		case 'a':
179 			aflag = 1;
180 			break;
181 
182 		default:
183 			usage();
184 		}
185 	}
186 
187 	argc -= optind;
188 	argv += optind;
189 
190 	if (aflag) {
191 		if (argc != 0)
192 			usage();
193 		printall(sock);
194 		exit(0);
195 	}
196 
197 	if (argc == 0)
198 		usage();
199 
200 	bridge = argv[0];
201 
202 	if (is_bridge(bridge) == 0)
203 		errx(1, "%s is not a bridge", bridge);
204 
205 	/* Get a copy of the interface flags. */
206 	strlcpy(g_ifr.ifr_name, bridge, sizeof(g_ifr.ifr_name));
207 	if (ioctl(sock, SIOCGIFFLAGS, &g_ifr) < 0)
208 		err(1, "unable to get interface flags");
209 
210 	argc--;
211 	argv++;
212 
213 	if (argc == 0) {
214 		status(sock, bridge);
215 		exit(0);
216 	}
217 
218 	while (argc != 0) {
219 		for (cmd = command_table; cmd->cmd_keyword != NULL; cmd++) {
220 			if (strcmp(cmd->cmd_keyword, argv[0]) == 0)
221 				break;
222 		}
223 		if (cmd->cmd_keyword == NULL)
224 			errx(1, "unknown command: %s", argv[0]);
225 
226 		argc--;
227 		argv++;
228 
229 		if (argc < cmd->cmd_argcnt)
230 			errx(1, "command %s requires %d argument%s",
231 			    cmd->cmd_keyword, cmd->cmd_argcnt,
232 			    cmd->cmd_argcnt == 1 ? "" : "s");
233 
234 		(*cmd->cmd_func)(cmd, sock, bridge, argv);
235 
236 		argc -= cmd->cmd_argcnt;
237 		argv += cmd->cmd_argcnt;
238 	}
239 
240 	/* If the flags changed, update them. */
241 	if (g_ifr_updated && ioctl(sock, SIOCSIFFLAGS, &g_ifr) < 0)
242 		err(1, "unable to set interface flags");
243 
244 	exit (0);
245 }
246 
247 static void
248 usage(void)
249 {
250 	static const char *usage_strings[] = {
251 		"-a",
252 		"<bridge>",
253 		"<bridge> up|down",
254 		"<bridge> addr",
255 		"<bridge> add <interface>",
256 		"<bridge> delete <interface>",
257 		"<bridge> maxaddr <size>",
258 		"<bridge> timeout <time>",
259 		"<bridge> static <interface> <address>",
260 		"<bridge> deladdr <address>",
261 		"<bridge> flush",
262 		"<bridge> flushall",
263 		"<bridge> ipf|-ipf",
264 		"<bridge> discover|-discover <interface>",
265 		"<bridge> learn|-learn <interface>",
266 		"<bridge> stp|-stp <interface>",
267 		"<bridge> maxage <time>",
268 		"<bridge> fwddelay <time>",
269 		"<bridge> hellotime <time>",
270 		"<bridge> priority <value>",
271 		"<bridge> ifpriority <interface> <value>",
272 		"<bridge> ifpathcost <interface> <value>",
273 		NULL,
274 	};
275 	extern const char *__progname;
276 	int i;
277 
278 	for (i = 0; usage_strings[i] != NULL; i++)
279 		fprintf(stderr, "%s %s %s\n",
280 		    i == 0 ? "usage:" : "      ",
281 		    __progname, usage_strings[i]);
282 
283 	exit(1);
284 }
285 
286 static int
287 is_bridge(const char *bridge)
288 {
289 
290 	if (strncmp(bridge, "bridge", 6) != 0 ||
291 	    isdigit((unsigned char)bridge[6]) == 0)
292 		return (0);
293 
294 	return (1);
295 }
296 
297 static void
298 printb(const char *s, u_int v, const char *bits)
299 {
300 	int i, any = 0;
301 	char c;
302 
303 	if (bits && *bits == 8)
304 		printf("%s=%o", s, v);
305 	else
306 		printf("%s=%x", s, v);
307 	if (bits) {
308 		bits++;
309 		putchar('<');
310 		while ((i = *bits++) != 0) {
311 			if (v & (1 << (i-1))) {
312 				if (any)
313 					putchar(',');
314 				any = 1;
315 				for (; (c = *bits) > 32; bits++)
316 					putchar(c);
317 			} else
318 				for (; *bits > 32; bits++)
319 					;
320 		}
321 		putchar('>');
322 	}
323 }
324 
325 static void
326 printall(int sock)
327 {
328 	struct ifaddrs *ifap, *ifa;
329 	char *p;
330 
331 	if (getifaddrs(&ifap) != 0)
332 		err(1, "getifaddrs");
333 	p = NULL;
334 	for (ifa = ifap; ifa != NULL; ifa = ifa->ifa_next) {
335 		if (is_bridge(ifa->ifa_name) == 0)
336 			continue;
337 		if (p != NULL && strcmp(p, ifa->ifa_name) == 0)
338 			continue;
339 		p = ifa->ifa_name;
340 		status(sock, ifa->ifa_name);
341 	}
342 
343 	freeifaddrs(ifap);
344 }
345 
346 static void
347 status(int sock, const char *bridge)
348 {
349 	struct ifreq ifr;
350 	struct ifbrparam bp1, bp2;
351 
352 	memset(&ifr, 0, sizeof(ifr));
353 
354 	strlcpy(ifr.ifr_name, bridge, sizeof(ifr.ifr_name));
355 	if (ioctl(sock, SIOCGIFFLAGS, &ifr) < 0)
356 		err(1, "unable to get flags");
357 
358 	printf("%s: ", bridge);
359 	printb("flags", ifr.ifr_flags, IFFBITS);
360 	printf("\n");
361 
362 	printf("\tConfiguration:\n");
363 	show_config(sock, bridge, "\t\t");
364 
365 	printf("\tInterfaces:\n");
366 	show_interfaces(sock, bridge, "\t\t");
367 
368 	if (do_cmd(sock, bridge, BRDGGCACHE, &bp1, sizeof(bp1), 0) < 0)
369 		err(1, "unable to get address cache size");
370 	if (do_cmd(sock, bridge, BRDGGTO, &bp2, sizeof(bp2), 0) < 0)
371 		err(1, "unable to get address timeout");
372 
373 	printf("\tAddress cache (max cache: %u, timeout: %u):\n",
374 	    bp1.ifbrp_csize, bp2.ifbrp_ctime);
375 	show_addresses(sock, bridge, "\t\t");
376 }
377 
378 static void
379 show_config(int sock, const char *bridge, const char *prefix)
380 {
381 	struct ifbrparam param;
382 	u_int32_t ipfflags;
383 	u_int16_t pri;
384 	u_int8_t ht, fd, ma;
385 
386 	if (do_cmd(sock, bridge, BRDGGPRI, &param, sizeof(param), 0) < 0)
387 		err(1, "unable to get bridge priority");
388 	pri = param.ifbrp_prio;
389 
390 	if (do_cmd(sock, bridge, BRDGGHT, &param, sizeof(param), 0) < 0)
391 		err(1, "unable to get hellotime");
392 	ht = param.ifbrp_hellotime;
393 
394 	if (do_cmd(sock, bridge, BRDGGFD, &param, sizeof(param), 0) < 0)
395 		err(1, "unable to get forward delay");
396 	fd = param.ifbrp_fwddelay;
397 
398 	if (do_cmd(sock, bridge, BRDGGMA, &param, sizeof(param), 0) < 0)
399 		err(1, "unable to get max age");
400 	ma = param.ifbrp_maxage;
401 
402 	printf("%spriority %u hellotime %u fwddelay %u maxage %u\n",
403 	    prefix, pri, ht, fd, ma);
404 
405 	if (do_cmd(sock, bridge, BRDGGFILT, &param, sizeof(param), 0) < 0) {
406 		/* err(1, "unable to get ipfilter status"); */
407 		param.ifbrp_filter = 0;
408 	}
409 
410 	ipfflags = param.ifbrp_filter;
411 	printf("%sipfilter %s flags 0x%x\n", prefix,
412 		(ipfflags & IFBF_FILT_USEIPF) ? "enabled" : "disabled",
413 		ipfflags);
414 }
415 
416 static void
417 show_interfaces(int sock, const char *bridge, const char *prefix)
418 {
419 	static const char stpstates[][11] = {
420 		"disabled",
421 		"listening",
422 		"learning",
423 		"forwarding",
424 		"blocking",
425 	};
426 	struct ifbreq *req;
427 	char *inbuf = NULL, *ninbuf;
428 	size_t len = 8192, nlen;
429 
430 	do {
431 		nlen = len;
432 		ninbuf = realloc(inbuf, nlen);
433 		if (ninbuf == NULL)
434 			err(1, "unable to allocate interface buffer");
435 		inbuf = ninbuf;
436 		if (do_cmd2(sock, bridge, BRDGGIFS, inbuf, nlen, &len, 0) < 0)
437 			err(1, "unable to get interface list");
438 	} while (len > nlen);
439 
440 	for (size_t i = 0; i < len / sizeof(*req); i++) {
441 		req = (struct ifbreq *)inbuf + i;
442 		printf("%s%s ", prefix, req->ifbr_ifsname);
443 		printb("flags", req->ifbr_ifsflags, IFBIFBITS);
444 		printf("\n");
445 		printf("%s\t", prefix);
446 		printf("port %u priority %u",
447 		    req->ifbr_portno, req->ifbr_priority);
448 		if (req->ifbr_ifsflags & IFBIF_STP) {
449 			printf(" path cost %u", req->ifbr_path_cost);
450 			if (req->ifbr_state <
451 			    sizeof(stpstates) / sizeof(stpstates[0]))
452 				printf(" %s", stpstates[req->ifbr_state]);
453 			else
454 				printf(" <unknown state %d>",
455 				    req->ifbr_state);
456 		}
457 		printf("\n");
458 	}
459 
460 	free(inbuf);
461 }
462 
463 static void
464 show_addresses(int sock, const char *bridge, const char *prefix)
465 {
466 	struct ifbareq *ifba;
467 	char *inbuf = NULL, *ninbuf;
468 	struct ether_addr ea;
469 	size_t len = 8192, nlen;
470 
471 	do {
472 		nlen = len;
473 		ninbuf = realloc(inbuf, nlen);
474 		if (ninbuf == NULL)
475 			err(1, "unable to allocate address buffer");
476 		inbuf = ninbuf;
477 		if (do_cmd2(sock, bridge, BRDGRTS, inbuf, nlen, &len, 0) < 0)
478 			err(1, "unable to get address cache");
479 	} while (len > nlen);
480 
481 	for (size_t i = 0; i < len / sizeof(*ifba); i++) {
482 		ifba = (struct ifbareq *)inbuf + i;
483 		memcpy(ea.ether_addr_octet, ifba->ifba_dst,
484 		    sizeof(ea.ether_addr_octet));
485 		printf("%s%s %s %jd ", prefix, ether_ntoa(&ea),
486 		    ifba->ifba_ifsname, (uintmax_t)ifba->ifba_expire);
487 		printb("flags", ifba->ifba_flags, IFBAFBITS);
488 		printf("\n");
489 	}
490 
491 	free(inbuf);
492 }
493 
494 static int
495 get_val(const char *cp, u_long *valp)
496 {
497 	char *endptr;
498 	u_long val;
499 
500 	errno = 0;
501 	val = strtoul(cp, &endptr, 0);
502 	if (cp[0] == '\0' || endptr[0] != '\0' || errno == ERANGE)
503 		return (-1);
504 
505 	*valp = val;
506 	return (0);
507 }
508 
509 static int
510 do_cmd2(int sock, const char *bridge, u_long op, void *arg, size_t argsize,
511     size_t *outsizep, int set)
512 {
513 	struct ifdrv ifd;
514 	int error;
515 
516 	memset(&ifd, 0, sizeof(ifd));
517 
518 	strlcpy(ifd.ifd_name, bridge, sizeof(ifd.ifd_name));
519 	ifd.ifd_cmd = op;
520 	ifd.ifd_len = argsize;
521 	ifd.ifd_data = arg;
522 
523 	error = ioctl(sock, set ? SIOCSDRVSPEC : SIOCGDRVSPEC, &ifd);
524 
525 	if (outsizep)
526 		*outsizep = ifd.ifd_len;
527 
528 	return error;
529 }
530 
531 static void
532 do_ifflag(int sock, const char *bridge, int flag, int set)
533 {
534 
535 	if (set)
536 		g_ifr.ifr_flags |= flag;
537 	else
538 		g_ifr.ifr_flags &= ~flag;
539 
540 	g_ifr_updated = 1;
541 }
542 
543 static void
544 do_bridgeflag(int sock, const char *bridge, const char *ifs, int flag,
545     int set)
546 {
547 	struct ifbreq req;
548 
549 	strlcpy(req.ifbr_ifsname, ifs, sizeof(req.ifbr_ifsname));
550 
551 	if (do_cmd(sock, bridge, BRDGGIFFLGS, &req, sizeof(req), 0) < 0)
552 		err(1, "unable to get bridge flags");
553 
554 	if (set)
555 		req.ifbr_ifsflags |= flag;
556 	else
557 		req.ifbr_ifsflags &= ~flag;
558 
559 	if (do_cmd(sock, bridge, BRDGSIFFLGS, &req, sizeof(req), 1) < 0)
560 		err(1, "unable to set bridge flags");
561 }
562 
563 static void
564 cmd_add(const struct command *cmd, int sock, const char *bridge,
565     char **argv)
566 {
567 	struct ifbreq req;
568 
569 	memset(&req, 0, sizeof(req));
570 
571 	strlcpy(req.ifbr_ifsname, argv[0], sizeof(req.ifbr_ifsname));
572 	if (do_cmd(sock, bridge, BRDGADD, &req, sizeof(req), 1) < 0)
573 		err(1, "%s %s", cmd->cmd_keyword, argv[0]);
574 }
575 
576 static void
577 cmd_delete(const struct command *cmd, int sock, const char *bridge,
578     char **argv)
579 {
580 	struct ifbreq req;
581 
582 	memset(&req, 0, sizeof(req));
583 	strlcpy(req.ifbr_ifsname, argv[0], sizeof(req.ifbr_ifsname));
584 	if (do_cmd(sock, bridge, BRDGDEL, &req, sizeof(req), 1) < 0)
585 		err(1, "%s %s", cmd->cmd_keyword, argv[0]);
586 }
587 
588 static void
589 cmd_up(const struct command *cmd, int sock, const char *bridge,
590     char **argv)
591 {
592 
593 	do_ifflag(sock, bridge, IFF_UP, 1);
594 }
595 
596 static void
597 cmd_down(const struct command *cmd, int sock, const char *bridge,
598     char **argv)
599 {
600 
601 	do_ifflag(sock, bridge, IFF_UP, 0);
602 }
603 
604 static void
605 cmd_discover(const struct command *cmd, int sock, const char *bridge,
606     char **argv)
607 {
608 
609 	do_bridgeflag(sock, bridge, argv[0], IFBIF_DISCOVER,
610 	    (cmd->cmd_flags & CMD_INVERT) ? 0 : 1);
611 }
612 
613 static void
614 cmd_learn(const struct command *cmd, int sock, const char *bridge,
615     char **argv)
616 {
617 
618 	do_bridgeflag(sock, bridge, argv[0], IFBIF_LEARNING,
619 	    (cmd->cmd_flags & CMD_INVERT) ? 0 : 1);
620 }
621 
622 static void
623 cmd_stp(const struct command *cmd, int sock, const char *bridge,
624     char **argv)
625 {
626 
627 	do_bridgeflag(sock, bridge, argv[0], IFBIF_STP,
628 	    (cmd->cmd_flags & CMD_INVERT) ? 0 : 1);
629 }
630 
631 static void
632 cmd_protect(const struct command *cmd, int sock, const char *bridge,
633     char **argv)
634 {
635 
636 	do_bridgeflag(sock, bridge, argv[0], IFBIF_PROTECTED,
637 	    (cmd->cmd_flags & CMD_INVERT) ? 0 : 1);
638 }
639 
640 static void
641 cmd_flush(const struct command *cmd, int sock, const char *bridge,
642     char **argv)
643 {
644 	struct ifbreq req;
645 
646 	memset(&req, 0, sizeof(req));
647 	req.ifbr_ifsflags = IFBF_FLUSHDYN;
648 	if (do_cmd(sock, bridge, BRDGFLUSH, &req, sizeof(req), 1) < 0)
649 		err(1, "%s", cmd->cmd_keyword);
650 }
651 
652 static void
653 cmd_flushall(const struct command *cmd, int sock, const char *bridge,
654     char **argv)
655 {
656 	struct ifbreq req;
657 
658 	memset(&req, 0, sizeof(req));
659 	req.ifbr_ifsflags = IFBF_FLUSHALL;
660 	if (do_cmd(sock, bridge, BRDGFLUSH, &req, sizeof(req), 1) < 0)
661 		err(1, "%s", cmd->cmd_keyword);
662 }
663 
664 static void
665 cmd_static(const struct command *cmd, int sock, const char *bridge,
666     char **argv)
667 {
668 	struct ifbareq req;
669 	struct ether_addr *ea;
670 
671 	memset(&req, 0, sizeof(req));
672 	strlcpy(req.ifba_ifsname, argv[0], sizeof(req.ifba_ifsname));
673 
674 	ea = ether_aton(argv[1]);
675 	if (ea == NULL)
676 		errx(1, "%s: invalid address: %s", cmd->cmd_keyword, argv[1]);
677 
678 	memcpy(req.ifba_dst, ea->ether_addr_octet, sizeof(req.ifba_dst));
679 	req.ifba_flags = IFBAF_STATIC;
680 
681 	if (do_cmd(sock, bridge, BRDGSADDR, &req, sizeof(req), 1) < 0)
682 		err(1, "%s %s %s", cmd->cmd_keyword, argv[0], argv[1]);
683 }
684 
685 static void
686 cmd_deladdr(const struct command *cmd, int sock, const char *bridge,
687     char **argv)
688 {
689 	struct ifbareq req;
690 	struct ether_addr *ea;
691 
692 	memset(&req, 0, sizeof(req));
693 
694 	ea = ether_aton(argv[0]);
695 	if (ea == NULL)
696 		errx(1, "%s: invalid address: %s", cmd->cmd_keyword, argv[0]);
697 
698 	memcpy(req.ifba_dst, ea->ether_addr_octet, sizeof(req.ifba_dst));
699 
700 	if (do_cmd(sock, bridge, BRDGDADDR, &req, sizeof(req), 1) < 0)
701 		err(1, "%s %s", cmd->cmd_keyword, argv[0]);
702 }
703 
704 static void
705 cmd_addr(const struct command *cmd, int sock, const char *bridge,
706     char **argv)
707 {
708 
709 	show_addresses(sock, bridge, "\t");
710 }
711 
712 static void
713 cmd_maxaddr(const struct command *cmd, int sock, const char *bridge,
714     char **argv)
715 {
716 	struct ifbrparam param;
717 	u_long val;
718 
719 	if (get_val(argv[0], &val) < 0 || (val & ~0xffffffff) != 0)
720 		errx(1, "%s: invalid value: %s", cmd->cmd_keyword, argv[0]);
721 
722 	param.ifbrp_csize = val & 0xffffffff;
723 
724 	if (do_cmd(sock, bridge, BRDGSCACHE, &param, sizeof(param), 1) < 0)
725 		err(1, "%s %s", cmd->cmd_keyword, argv[0]);
726 }
727 
728 static void
729 cmd_hellotime(const struct command *cmd, int sock, const char *bridge,
730     char **argv)
731 {
732 	struct ifbrparam param;
733 	u_long val;
734 
735 	if (get_val(argv[0], &val) < 0 || (val & ~0xff) != 0)
736 		errx(1, "%s: invalid value: %s", cmd->cmd_keyword, argv[0]);
737 
738 	param.ifbrp_hellotime = val & 0xff;
739 
740 	if (do_cmd(sock, bridge, BRDGSHT, &param, sizeof(param), 1) < 0)
741 		err(1, "%s %s", cmd->cmd_keyword, argv[0]);
742 }
743 
744 static void
745 cmd_fwddelay(const struct command *cmd, int sock, const char *bridge,
746     char **argv)
747 {
748 	struct ifbrparam param;
749 	u_long val;
750 
751 	if (get_val(argv[0], &val) < 0 || (val & ~0xff) != 0)
752 		errx(1, "%s: invalid value: %s", cmd->cmd_keyword, argv[0]);
753 
754 	param.ifbrp_fwddelay = val & 0xff;
755 
756 	if (do_cmd(sock, bridge, BRDGSFD, &param, sizeof(param), 1) < 0)
757 		err(1, "%s %s", cmd->cmd_keyword, argv[0]);
758 }
759 
760 static void
761 cmd_maxage(const struct command *cmd, int sock, const char *bridge,
762     char **argv)
763 {
764 	struct ifbrparam param;
765 	u_long val;
766 
767 	if (get_val(argv[0], &val) < 0 || (val & ~0xff) != 0)
768 		errx(1, "%s: invalid value: %s", cmd->cmd_keyword, argv[0]);
769 
770 	param.ifbrp_maxage = val & 0xff;
771 
772 	if (do_cmd(sock, bridge, BRDGSMA, &param, sizeof(param), 1) < 0)
773 		err(1, "%s %s", cmd->cmd_keyword, argv[0]);
774 }
775 
776 static void
777 cmd_priority(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 & ~0xffff) != 0)
784 		errx(1, "%s: invalid value: %s", cmd->cmd_keyword, argv[0]);
785 
786 	param.ifbrp_prio = val & 0xffff;
787 
788 	if (do_cmd(sock, bridge, BRDGSPRI, &param, sizeof(param), 1) < 0)
789 		err(1, "%s %s", cmd->cmd_keyword, argv[0]);
790 }
791 
792 static void
793 cmd_ifpriority(const struct command *cmd, int sock, const char *bridge,
794     char **argv)
795 {
796 	struct ifbreq req;
797 	u_long val;
798 
799 	memset(&req, 0, sizeof(req));
800 
801 	if (get_val(argv[1], &val) < 0 || (val & ~0xff) != 0)
802 		errx(1, "%s: invalid value: %s", cmd->cmd_keyword, argv[1]);
803 
804 	strlcpy(req.ifbr_ifsname, argv[0], sizeof(req.ifbr_ifsname));
805 	req.ifbr_priority = val & 0xff;
806 
807 	if (do_cmd(sock, bridge, BRDGSIFPRIO, &req, sizeof(req), 1) < 0)
808 		err(1, "%s %s", cmd->cmd_keyword, argv[0]);
809 }
810 
811 static void
812 cmd_ifpathcost(const struct command *cmd, int sock, const char *bridge,
813     char **argv)
814 {
815 	struct ifbreq req;
816 	u_long val;
817 
818 	memset(&req, 0, sizeof(req));
819 
820 	if (get_val(argv[1], &val) < 0 || (val & ~0xff) != 0)
821 		errx(1, "%s: invalid value: %s", cmd->cmd_keyword, argv[1]);
822 
823 	strlcpy(req.ifbr_ifsname, argv[0], sizeof(req.ifbr_ifsname));
824 	req.ifbr_path_cost = val & 0xffff;
825 
826 	if (do_cmd(sock, bridge, BRDGSIFCOST, &req, sizeof(req), 1) < 0)
827 		err(1, "%s %s", cmd->cmd_keyword, argv[0]);
828 }
829 
830 static void
831 cmd_timeout(const struct command *cmd, int sock, const char *bridge,
832     char **argv)
833 {
834 	struct ifbrparam param;
835 	u_long val;
836 
837 	if (get_val(argv[0], &val) < 0 || (val & ~0xffffffff) != 0)
838 		errx(1, "%s: invalid value: %s", cmd->cmd_keyword, argv[0]);
839 
840 	param.ifbrp_ctime = val & 0xffffffff;
841 
842 	if (do_cmd(sock, bridge, BRDGSTO, &param, sizeof(param), 1) < 0)
843 		err(1, "%s %s", cmd->cmd_keyword, argv[0]);
844 }
845 
846 static void
847 cmd_ipf(const struct command *cmd, int sock, const char *bridge,
848     char **argv)
849 {
850         struct ifbrparam param;
851 
852         if (do_cmd(sock, bridge, BRDGGFILT, &param, sizeof(param), 0) < 0)
853 		err(1, "%s", cmd->cmd_keyword);
854 
855         param.ifbrp_filter &= ~IFBF_FILT_USEIPF;
856         param.ifbrp_filter |= (cmd->cmd_flags & CMD_INVERT) ? 0 : IFBF_FILT_USEIPF;
857         if (do_cmd(sock, bridge, BRDGSFILT, &param, sizeof(param), 1) < 0)
858 		err(1, "%s %x", cmd->cmd_keyword, param.ifbrp_filter);
859 }
860