xref: /freebsd/sbin/ifconfig/ifbridge.c (revision 389e4940069316fe667ffa263fa7d6390d0a960f)
1 /*-
2  * SPDX-License-Identifier: BSD-4-Clause
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 #ifndef lint
39 static const char rcsid[] =
40   "$FreeBSD$";
41 #endif /* not lint */
42 
43 #include <sys/param.h>
44 #include <sys/ioctl.h>
45 #include <sys/socket.h>
46 #include <sys/sockio.h>
47 
48 #include <stdlib.h>
49 #include <unistd.h>
50 
51 #include <net/ethernet.h>
52 #include <net/if.h>
53 #include <net/if_bridgevar.h>
54 #include <net/route.h>
55 
56 #include <ctype.h>
57 #include <stdio.h>
58 #include <string.h>
59 #include <stdlib.h>
60 #include <unistd.h>
61 #include <err.h>
62 #include <errno.h>
63 
64 #include "ifconfig.h"
65 
66 #define PV2ID(pv, epri, eaddr)  do {		\
67 		epri     = pv >> 48;		\
68 		eaddr[0] = pv >> 40;		\
69 		eaddr[1] = pv >> 32;		\
70 		eaddr[2] = pv >> 24;		\
71 		eaddr[3] = pv >> 16;		\
72 		eaddr[4] = pv >> 8;		\
73 		eaddr[5] = pv >> 0;		\
74 } while (0)
75 
76 static const char *stpstates[] = {
77 	"disabled",
78 	"listening",
79 	"learning",
80 	"forwarding",
81 	"blocking",
82 	"discarding"
83 };
84 static const char *stpproto[] = {
85 	"stp",
86 	"-",
87 	"rstp"
88 };
89 static const char *stproles[] = {
90 	"disabled",
91 	"root",
92 	"designated",
93 	"alternate",
94 	"backup"
95 };
96 
97 static int
98 get_val(const char *cp, u_long *valp)
99 {
100 	char *endptr;
101 	u_long val;
102 
103 	errno = 0;
104 	val = strtoul(cp, &endptr, 0);
105 	if (cp[0] == '\0' || endptr[0] != '\0' || errno == ERANGE)
106 		return (-1);
107 
108 	*valp = val;
109 	return (0);
110 }
111 
112 static int
113 do_cmd(int sock, u_long op, void *arg, size_t argsize, int set)
114 {
115 	struct ifdrv ifd;
116 
117 	memset(&ifd, 0, sizeof(ifd));
118 
119 	strlcpy(ifd.ifd_name, ifr.ifr_name, sizeof(ifd.ifd_name));
120 	ifd.ifd_cmd = op;
121 	ifd.ifd_len = argsize;
122 	ifd.ifd_data = arg;
123 
124 	return (ioctl(sock, set ? SIOCSDRVSPEC : SIOCGDRVSPEC, &ifd));
125 }
126 
127 static void
128 do_bridgeflag(int sock, const char *ifs, int flag, int set)
129 {
130 	struct ifbreq req;
131 
132 	strlcpy(req.ifbr_ifsname, ifs, sizeof(req.ifbr_ifsname));
133 
134 	if (do_cmd(sock, BRDGGIFFLGS, &req, sizeof(req), 0) < 0)
135 		err(1, "unable to get bridge flags");
136 
137 	if (set)
138 		req.ifbr_ifsflags |= flag;
139 	else
140 		req.ifbr_ifsflags &= ~flag;
141 
142 	if (do_cmd(sock, BRDGSIFFLGS, &req, sizeof(req), 1) < 0)
143 		err(1, "unable to set bridge flags");
144 }
145 
146 static void
147 bridge_interfaces(int s, const char *prefix)
148 {
149 	struct ifbifconf bifc;
150 	struct ifbreq *req;
151 	char *inbuf = NULL, *ninbuf;
152 	char *p, *pad;
153 	int i, len = 8192;
154 
155 	pad = strdup(prefix);
156 	if (pad == NULL)
157 		err(1, "strdup");
158 	/* replace the prefix with whitespace */
159 	for (p = pad; *p != '\0'; p++) {
160 		if(isprint(*p))
161 			*p = ' ';
162 	}
163 
164 	for (;;) {
165 		ninbuf = realloc(inbuf, len);
166 		if (ninbuf == NULL)
167 			err(1, "unable to allocate interface buffer");
168 		bifc.ifbic_len = len;
169 		bifc.ifbic_buf = inbuf = ninbuf;
170 		if (do_cmd(s, BRDGGIFS, &bifc, sizeof(bifc), 0) < 0)
171 			err(1, "unable to get interface list");
172 		if ((bifc.ifbic_len + sizeof(*req)) < len)
173 			break;
174 		len *= 2;
175 	}
176 
177 	for (i = 0; i < bifc.ifbic_len / sizeof(*req); i++) {
178 		req = bifc.ifbic_req + i;
179 		printf("%s%s ", prefix, req->ifbr_ifsname);
180 		printb("flags", req->ifbr_ifsflags, IFBIFBITS);
181 		printf("\n");
182 
183 		printf("%s", pad);
184 		printf("ifmaxaddr %u", req->ifbr_addrmax);
185 		printf(" port %u priority %u", req->ifbr_portno,
186 		    req->ifbr_priority);
187 		printf(" path cost %u", req->ifbr_path_cost);
188 
189 		if (req->ifbr_ifsflags & IFBIF_STP) {
190 			if (req->ifbr_proto < nitems(stpproto))
191 				printf(" proto %s", stpproto[req->ifbr_proto]);
192 			else
193 				printf(" <unknown proto %d>",
194 				    req->ifbr_proto);
195 
196 			printf("\n%s", pad);
197 			if (req->ifbr_role < nitems(stproles))
198 				printf("role %s", stproles[req->ifbr_role]);
199 			else
200 				printf("<unknown role %d>",
201 				    req->ifbr_role);
202 			if (req->ifbr_state < nitems(stpstates))
203 				printf(" state %s", stpstates[req->ifbr_state]);
204 			else
205 				printf(" <unknown state %d>",
206 				    req->ifbr_state);
207 		}
208 		printf("\n");
209 	}
210 	free(pad);
211 	free(inbuf);
212 }
213 
214 static void
215 bridge_addresses(int s, const char *prefix)
216 {
217 	struct ifbaconf ifbac;
218 	struct ifbareq *ifba;
219 	char *inbuf = NULL, *ninbuf;
220 	int i, len = 8192;
221 	struct ether_addr ea;
222 
223 	for (;;) {
224 		ninbuf = realloc(inbuf, len);
225 		if (ninbuf == NULL)
226 			err(1, "unable to allocate address buffer");
227 		ifbac.ifbac_len = len;
228 		ifbac.ifbac_buf = inbuf = ninbuf;
229 		if (do_cmd(s, BRDGRTS, &ifbac, sizeof(ifbac), 0) < 0)
230 			err(1, "unable to get address cache");
231 		if ((ifbac.ifbac_len + sizeof(*ifba)) < len)
232 			break;
233 		len *= 2;
234 	}
235 
236 	for (i = 0; i < ifbac.ifbac_len / sizeof(*ifba); i++) {
237 		ifba = ifbac.ifbac_req + i;
238 		memcpy(ea.octet, ifba->ifba_dst,
239 		    sizeof(ea.octet));
240 		printf("%s%s Vlan%d %s %lu ", prefix, ether_ntoa(&ea),
241 		    ifba->ifba_vlan, ifba->ifba_ifsname, ifba->ifba_expire);
242 		printb("flags", ifba->ifba_flags, IFBAFBITS);
243 		printf("\n");
244 	}
245 
246 	free(inbuf);
247 }
248 
249 static void
250 bridge_status(int s)
251 {
252 	struct ifbropreq ifbp;
253 	struct ifbrparam param;
254 	u_int16_t pri;
255 	u_int8_t ht, fd, ma, hc, pro;
256 	u_int8_t lladdr[ETHER_ADDR_LEN];
257 	u_int16_t bprio;
258 	u_int32_t csize, ctime;
259 
260 	if (do_cmd(s, BRDGGCACHE, &param, sizeof(param), 0) < 0)
261 		return;
262 	csize = param.ifbrp_csize;
263 	if (do_cmd(s, BRDGGTO, &param, sizeof(param), 0) < 0)
264 		return;
265 	ctime = param.ifbrp_ctime;
266 	if (do_cmd(s, BRDGPARAM, &ifbp, sizeof(ifbp), 0) < 0)
267 		return;
268 	pri = ifbp.ifbop_priority;
269 	pro = ifbp.ifbop_protocol;
270 	ht = ifbp.ifbop_hellotime;
271 	fd = ifbp.ifbop_fwddelay;
272 	hc = ifbp.ifbop_holdcount;
273 	ma = ifbp.ifbop_maxage;
274 
275 	PV2ID(ifbp.ifbop_bridgeid, bprio, lladdr);
276 	printf("\tid %s priority %u hellotime %u fwddelay %u\n",
277 	    ether_ntoa((struct ether_addr *)lladdr), pri, ht, fd);
278 	printf("\tmaxage %u holdcnt %u proto %s maxaddr %u timeout %u\n",
279 	    ma, hc, stpproto[pro], csize, ctime);
280 
281 	PV2ID(ifbp.ifbop_designated_root, bprio, lladdr);
282 	printf("\troot id %s priority %d ifcost %u port %u\n",
283 	    ether_ntoa((struct ether_addr *)lladdr), bprio,
284 	    ifbp.ifbop_root_path_cost, ifbp.ifbop_root_port & 0xfff);
285 
286 	bridge_interfaces(s, "\tmember: ");
287 
288 	return;
289 
290 }
291 
292 static void
293 setbridge_add(const char *val, int d, int s, const struct afswtch *afp)
294 {
295 	struct ifbreq req;
296 
297 	memset(&req, 0, sizeof(req));
298 	strlcpy(req.ifbr_ifsname, val, sizeof(req.ifbr_ifsname));
299 	if (do_cmd(s, BRDGADD, &req, sizeof(req), 1) < 0)
300 		err(1, "BRDGADD %s",  val);
301 }
302 
303 static void
304 setbridge_delete(const char *val, int d, int s, const struct afswtch *afp)
305 {
306 	struct ifbreq req;
307 
308 	memset(&req, 0, sizeof(req));
309 	strlcpy(req.ifbr_ifsname, val, sizeof(req.ifbr_ifsname));
310 	if (do_cmd(s, BRDGDEL, &req, sizeof(req), 1) < 0)
311 		err(1, "BRDGDEL %s",  val);
312 }
313 
314 static void
315 setbridge_discover(const char *val, int d, int s, const struct afswtch *afp)
316 {
317 
318 	do_bridgeflag(s, val, IFBIF_DISCOVER, 1);
319 }
320 
321 static void
322 unsetbridge_discover(const char *val, int d, int s, const struct afswtch *afp)
323 {
324 
325 	do_bridgeflag(s, val, IFBIF_DISCOVER, 0);
326 }
327 
328 static void
329 setbridge_learn(const char *val, int d, int s, const struct afswtch *afp)
330 {
331 
332 	do_bridgeflag(s, val, IFBIF_LEARNING,  1);
333 }
334 
335 static void
336 unsetbridge_learn(const char *val, int d, int s, const struct afswtch *afp)
337 {
338 
339 	do_bridgeflag(s, val, IFBIF_LEARNING,  0);
340 }
341 
342 static void
343 setbridge_sticky(const char *val, int d, int s, const struct afswtch *afp)
344 {
345 
346 	do_bridgeflag(s, val, IFBIF_STICKY,  1);
347 }
348 
349 static void
350 unsetbridge_sticky(const char *val, int d, int s, const struct afswtch *afp)
351 {
352 
353 	do_bridgeflag(s, val, IFBIF_STICKY,  0);
354 }
355 
356 static void
357 setbridge_span(const char *val, int d, int s, const struct afswtch *afp)
358 {
359 	struct ifbreq req;
360 
361 	memset(&req, 0, sizeof(req));
362 	strlcpy(req.ifbr_ifsname, val, sizeof(req.ifbr_ifsname));
363 	if (do_cmd(s, BRDGADDS, &req, sizeof(req), 1) < 0)
364 		err(1, "BRDGADDS %s",  val);
365 }
366 
367 static void
368 unsetbridge_span(const char *val, int d, int s, const struct afswtch *afp)
369 {
370 	struct ifbreq req;
371 
372 	memset(&req, 0, sizeof(req));
373 	strlcpy(req.ifbr_ifsname, val, sizeof(req.ifbr_ifsname));
374 	if (do_cmd(s, BRDGDELS, &req, sizeof(req), 1) < 0)
375 		err(1, "BRDGDELS %s",  val);
376 }
377 
378 static void
379 setbridge_stp(const char *val, int d, int s, const struct afswtch *afp)
380 {
381 
382 	do_bridgeflag(s, val, IFBIF_STP, 1);
383 }
384 
385 static void
386 unsetbridge_stp(const char *val, int d, int s, const struct afswtch *afp)
387 {
388 
389 	do_bridgeflag(s, val, IFBIF_STP, 0);
390 }
391 
392 static void
393 setbridge_edge(const char *val, int d, int s, const struct afswtch *afp)
394 {
395 	do_bridgeflag(s, val, IFBIF_BSTP_EDGE, 1);
396 }
397 
398 static void
399 unsetbridge_edge(const char *val, int d, int s, const struct afswtch *afp)
400 {
401 	do_bridgeflag(s, val, IFBIF_BSTP_EDGE, 0);
402 }
403 
404 static void
405 setbridge_autoedge(const char *val, int d, int s, const struct afswtch *afp)
406 {
407 	do_bridgeflag(s, val, IFBIF_BSTP_AUTOEDGE, 1);
408 }
409 
410 static void
411 unsetbridge_autoedge(const char *val, int d, int s, const struct afswtch *afp)
412 {
413 	do_bridgeflag(s, val, IFBIF_BSTP_AUTOEDGE, 0);
414 }
415 
416 static void
417 setbridge_ptp(const char *val, int d, int s, const struct afswtch *afp)
418 {
419 	do_bridgeflag(s, val, IFBIF_BSTP_PTP, 1);
420 }
421 
422 static void
423 unsetbridge_ptp(const char *val, int d, int s, const struct afswtch *afp)
424 {
425 	do_bridgeflag(s, val, IFBIF_BSTP_PTP, 0);
426 }
427 
428 static void
429 setbridge_autoptp(const char *val, int d, int s, const struct afswtch *afp)
430 {
431 	do_bridgeflag(s, val, IFBIF_BSTP_AUTOPTP, 1);
432 }
433 
434 static void
435 unsetbridge_autoptp(const char *val, int d, int s, const struct afswtch *afp)
436 {
437 	do_bridgeflag(s, val, IFBIF_BSTP_AUTOPTP, 0);
438 }
439 
440 static void
441 setbridge_flush(const char *val, int d, int s, const struct afswtch *afp)
442 {
443 	struct ifbreq req;
444 
445 	memset(&req, 0, sizeof(req));
446 	req.ifbr_ifsflags = IFBF_FLUSHDYN;
447 	if (do_cmd(s, BRDGFLUSH, &req, sizeof(req), 1) < 0)
448 		err(1, "BRDGFLUSH");
449 }
450 
451 static void
452 setbridge_flushall(const char *val, int d, int s, const struct afswtch *afp)
453 {
454 	struct ifbreq req;
455 
456 	memset(&req, 0, sizeof(req));
457 	req.ifbr_ifsflags = IFBF_FLUSHALL;
458 	if (do_cmd(s, BRDGFLUSH, &req, sizeof(req), 1) < 0)
459 		err(1, "BRDGFLUSH");
460 }
461 
462 static void
463 setbridge_static(const char *val, const char *mac, int s,
464     const struct afswtch *afp)
465 {
466 	struct ifbareq req;
467 	struct ether_addr *ea;
468 
469 	memset(&req, 0, sizeof(req));
470 	strlcpy(req.ifba_ifsname, val, sizeof(req.ifba_ifsname));
471 
472 	ea = ether_aton(mac);
473 	if (ea == NULL)
474 		errx(1, "%s: invalid address: %s", val, mac);
475 
476 	memcpy(req.ifba_dst, ea->octet, sizeof(req.ifba_dst));
477 	req.ifba_flags = IFBAF_STATIC;
478 	req.ifba_vlan = 1; /* XXX allow user to specify */
479 
480 	if (do_cmd(s, BRDGSADDR, &req, sizeof(req), 1) < 0)
481 		err(1, "BRDGSADDR %s",  val);
482 }
483 
484 static void
485 setbridge_deladdr(const char *val, int d, int s, const struct afswtch *afp)
486 {
487 	struct ifbareq req;
488 	struct ether_addr *ea;
489 
490 	memset(&req, 0, sizeof(req));
491 
492 	ea = ether_aton(val);
493 	if (ea == NULL)
494 		errx(1, "invalid address: %s",  val);
495 
496 	memcpy(req.ifba_dst, ea->octet, sizeof(req.ifba_dst));
497 
498 	if (do_cmd(s, BRDGDADDR, &req, sizeof(req), 1) < 0)
499 		err(1, "BRDGDADDR %s",  val);
500 }
501 
502 static void
503 setbridge_addr(const char *val, int d, int s, const struct afswtch *afp)
504 {
505 
506 	bridge_addresses(s, "");
507 }
508 
509 static void
510 setbridge_maxaddr(const char *arg, int d, int s, const struct afswtch *afp)
511 {
512 	struct ifbrparam param;
513 	u_long val;
514 
515 	if (get_val(arg, &val) < 0 || (val & ~0xffffffff) != 0)
516 		errx(1, "invalid value: %s",  arg);
517 
518 	param.ifbrp_csize = val & 0xffffffff;
519 
520 	if (do_cmd(s, BRDGSCACHE, &param, sizeof(param), 1) < 0)
521 		err(1, "BRDGSCACHE %s",  arg);
522 }
523 
524 static void
525 setbridge_hellotime(const char *arg, int d, int s, const struct afswtch *afp)
526 {
527 	struct ifbrparam param;
528 	u_long val;
529 
530 	if (get_val(arg, &val) < 0 || (val & ~0xff) != 0)
531 		errx(1, "invalid value: %s",  arg);
532 
533 	param.ifbrp_hellotime = val & 0xff;
534 
535 	if (do_cmd(s, BRDGSHT, &param, sizeof(param), 1) < 0)
536 		err(1, "BRDGSHT %s",  arg);
537 }
538 
539 static void
540 setbridge_fwddelay(const char *arg, int d, int s, const struct afswtch *afp)
541 {
542 	struct ifbrparam param;
543 	u_long val;
544 
545 	if (get_val(arg, &val) < 0 || (val & ~0xff) != 0)
546 		errx(1, "invalid value: %s",  arg);
547 
548 	param.ifbrp_fwddelay = val & 0xff;
549 
550 	if (do_cmd(s, BRDGSFD, &param, sizeof(param), 1) < 0)
551 		err(1, "BRDGSFD %s",  arg);
552 }
553 
554 static void
555 setbridge_maxage(const char *arg, int d, int s, const struct afswtch *afp)
556 {
557 	struct ifbrparam param;
558 	u_long val;
559 
560 	if (get_val(arg, &val) < 0 || (val & ~0xff) != 0)
561 		errx(1, "invalid value: %s",  arg);
562 
563 	param.ifbrp_maxage = val & 0xff;
564 
565 	if (do_cmd(s, BRDGSMA, &param, sizeof(param), 1) < 0)
566 		err(1, "BRDGSMA %s",  arg);
567 }
568 
569 static void
570 setbridge_priority(const char *arg, int d, int s, const struct afswtch *afp)
571 {
572 	struct ifbrparam param;
573 	u_long val;
574 
575 	if (get_val(arg, &val) < 0 || (val & ~0xffff) != 0)
576 		errx(1, "invalid value: %s",  arg);
577 
578 	param.ifbrp_prio = val & 0xffff;
579 
580 	if (do_cmd(s, BRDGSPRI, &param, sizeof(param), 1) < 0)
581 		err(1, "BRDGSPRI %s",  arg);
582 }
583 
584 static void
585 setbridge_protocol(const char *arg, int d, int s, const struct afswtch *afp)
586 {
587 	struct ifbrparam param;
588 
589 	if (strcasecmp(arg, "stp") == 0) {
590 		param.ifbrp_proto = 0;
591 	} else if (strcasecmp(arg, "rstp") == 0) {
592 		param.ifbrp_proto = 2;
593 	} else {
594 		errx(1, "unknown stp protocol");
595 	}
596 
597 	if (do_cmd(s, BRDGSPROTO, &param, sizeof(param), 1) < 0)
598 		err(1, "BRDGSPROTO %s",  arg);
599 }
600 
601 static void
602 setbridge_holdcount(const char *arg, int d, int s, const struct afswtch *afp)
603 {
604 	struct ifbrparam param;
605 	u_long val;
606 
607 	if (get_val(arg, &val) < 0 || (val & ~0xff) != 0)
608 		errx(1, "invalid value: %s",  arg);
609 
610 	param.ifbrp_txhc = val & 0xff;
611 
612 	if (do_cmd(s, BRDGSTXHC, &param, sizeof(param), 1) < 0)
613 		err(1, "BRDGSTXHC %s",  arg);
614 }
615 
616 static void
617 setbridge_ifpriority(const char *ifn, const char *pri, int s,
618     const struct afswtch *afp)
619 {
620 	struct ifbreq req;
621 	u_long val;
622 
623 	memset(&req, 0, sizeof(req));
624 
625 	if (get_val(pri, &val) < 0 || (val & ~0xff) != 0)
626 		errx(1, "invalid value: %s",  pri);
627 
628 	strlcpy(req.ifbr_ifsname, ifn, sizeof(req.ifbr_ifsname));
629 	req.ifbr_priority = val & 0xff;
630 
631 	if (do_cmd(s, BRDGSIFPRIO, &req, sizeof(req), 1) < 0)
632 		err(1, "BRDGSIFPRIO %s",  pri);
633 }
634 
635 static void
636 setbridge_ifpathcost(const char *ifn, const char *cost, int s,
637     const struct afswtch *afp)
638 {
639 	struct ifbreq req;
640 	u_long val;
641 
642 	memset(&req, 0, sizeof(req));
643 
644 	if (get_val(cost, &val) < 0)
645 		errx(1, "invalid value: %s",  cost);
646 
647 	strlcpy(req.ifbr_ifsname, ifn, sizeof(req.ifbr_ifsname));
648 	req.ifbr_path_cost = val;
649 
650 	if (do_cmd(s, BRDGSIFCOST, &req, sizeof(req), 1) < 0)
651 		err(1, "BRDGSIFCOST %s",  cost);
652 }
653 
654 static void
655 setbridge_ifmaxaddr(const char *ifn, const char *arg, int s,
656     const struct afswtch *afp)
657 {
658 	struct ifbreq req;
659 	u_long val;
660 
661 	memset(&req, 0, sizeof(req));
662 
663 	if (get_val(arg, &val) < 0 || (val & ~0xffffffff) != 0)
664 		errx(1, "invalid value: %s",  arg);
665 
666 	strlcpy(req.ifbr_ifsname, ifn, sizeof(req.ifbr_ifsname));
667 	req.ifbr_addrmax = val & 0xffffffff;
668 
669 	if (do_cmd(s, BRDGSIFAMAX, &req, sizeof(req), 1) < 0)
670 		err(1, "BRDGSIFAMAX %s",  arg);
671 }
672 
673 static void
674 setbridge_timeout(const char *arg, int d, int s, const struct afswtch *afp)
675 {
676 	struct ifbrparam param;
677 	u_long val;
678 
679 	if (get_val(arg, &val) < 0 || (val & ~0xffffffff) != 0)
680 		errx(1, "invalid value: %s",  arg);
681 
682 	param.ifbrp_ctime = val & 0xffffffff;
683 
684 	if (do_cmd(s, BRDGSTO, &param, sizeof(param), 1) < 0)
685 		err(1, "BRDGSTO %s",  arg);
686 }
687 
688 static void
689 setbridge_private(const char *val, int d, int s, const struct afswtch *afp)
690 {
691 
692 	do_bridgeflag(s, val, IFBIF_PRIVATE, 1);
693 }
694 
695 static void
696 unsetbridge_private(const char *val, int d, int s, const struct afswtch *afp)
697 {
698 
699 	do_bridgeflag(s, val, IFBIF_PRIVATE, 0);
700 }
701 
702 static struct cmd bridge_cmds[] = {
703 	DEF_CMD_ARG("addm",		setbridge_add),
704 	DEF_CMD_ARG("deletem",		setbridge_delete),
705 	DEF_CMD_ARG("discover",		setbridge_discover),
706 	DEF_CMD_ARG("-discover",	unsetbridge_discover),
707 	DEF_CMD_ARG("learn",		setbridge_learn),
708 	DEF_CMD_ARG("-learn",		unsetbridge_learn),
709 	DEF_CMD_ARG("sticky",		setbridge_sticky),
710 	DEF_CMD_ARG("-sticky",		unsetbridge_sticky),
711 	DEF_CMD_ARG("span",		setbridge_span),
712 	DEF_CMD_ARG("-span",		unsetbridge_span),
713 	DEF_CMD_ARG("stp",		setbridge_stp),
714 	DEF_CMD_ARG("-stp",		unsetbridge_stp),
715 	DEF_CMD_ARG("edge",		setbridge_edge),
716 	DEF_CMD_ARG("-edge",		unsetbridge_edge),
717 	DEF_CMD_ARG("autoedge",		setbridge_autoedge),
718 	DEF_CMD_ARG("-autoedge",	unsetbridge_autoedge),
719 	DEF_CMD_ARG("ptp",		setbridge_ptp),
720 	DEF_CMD_ARG("-ptp",		unsetbridge_ptp),
721 	DEF_CMD_ARG("autoptp",		setbridge_autoptp),
722 	DEF_CMD_ARG("-autoptp",		unsetbridge_autoptp),
723 	DEF_CMD("flush", 0,		setbridge_flush),
724 	DEF_CMD("flushall", 0,		setbridge_flushall),
725 	DEF_CMD_ARG2("static",		setbridge_static),
726 	DEF_CMD_ARG("deladdr",		setbridge_deladdr),
727 	DEF_CMD("addr",	 1,		setbridge_addr),
728 	DEF_CMD_ARG("maxaddr",		setbridge_maxaddr),
729 	DEF_CMD_ARG("hellotime",	setbridge_hellotime),
730 	DEF_CMD_ARG("fwddelay",		setbridge_fwddelay),
731 	DEF_CMD_ARG("maxage",		setbridge_maxage),
732 	DEF_CMD_ARG("priority",		setbridge_priority),
733 	DEF_CMD_ARG("proto",		setbridge_protocol),
734 	DEF_CMD_ARG("holdcnt",		setbridge_holdcount),
735 	DEF_CMD_ARG2("ifpriority",	setbridge_ifpriority),
736 	DEF_CMD_ARG2("ifpathcost",	setbridge_ifpathcost),
737 	DEF_CMD_ARG2("ifmaxaddr",	setbridge_ifmaxaddr),
738 	DEF_CMD_ARG("timeout",		setbridge_timeout),
739 	DEF_CMD_ARG("private",		setbridge_private),
740 	DEF_CMD_ARG("-private",		unsetbridge_private),
741 };
742 static struct afswtch af_bridge = {
743 	.af_name	= "af_bridge",
744 	.af_af		= AF_UNSPEC,
745 	.af_other_status = bridge_status,
746 };
747 
748 static __constructor void
749 bridge_ctor(void)
750 {
751 	int i;
752 
753 	for (i = 0; i < nitems(bridge_cmds);  i++)
754 		cmd_register(&bridge_cmds[i]);
755 	af_register(&af_bridge);
756 }
757