xref: /freebsd/sbin/ifconfig/ifbridge.c (revision 3bdf775801b218aa5a89564839405b122f4b233e)
1 /*-
2  * Copyright 2001 Wasabi Systems, Inc.
3  * All rights reserved.
4  *
5  * Written by Jason R. Thorpe for Wasabi Systems, Inc.
6  *
7  * Redistribution and use in source and binary forms, with or without
8  * modification, are permitted provided that the following conditions
9  * are met:
10  * 1. Redistributions of source code must retain the above copyright
11  *    notice, this list of conditions and the following disclaimer.
12  * 2. Redistributions in binary form must reproduce the above copyright
13  *    notice, this list of conditions and the following disclaimer in the
14  *    documentation and/or other materials provided with the distribution.
15  * 3. All advertising materials mentioning features or use of this software
16  *    must display the following acknowledgement:
17  *	This product includes software developed for the NetBSD Project by
18  *	Wasabi Systems, Inc.
19  * 4. The name of Wasabi Systems, Inc. may not be used to endorse
20  *    or promote products derived from this software without specific prior
21  *    written permission.
22  *
23  * THIS SOFTWARE IS PROVIDED BY WASABI SYSTEMS, INC. ``AS IS'' AND
24  * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED
25  * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
26  * PURPOSE ARE DISCLAIMED.  IN NO EVENT SHALL WASABI SYSTEMS, INC
27  * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
28  * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
29  * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
30  * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
31  * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
32  * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
33  * POSSIBILITY OF SUCH DAMAGE.
34  */
35 
36 #ifndef lint
37 static const char rcsid[] =
38   "$FreeBSD$";
39 #endif /* not lint */
40 
41 #include <sys/param.h>
42 #include <sys/ioctl.h>
43 #include <sys/socket.h>
44 #include <sys/sockio.h>
45 
46 #include <stdlib.h>
47 #include <unistd.h>
48 
49 #include <net/ethernet.h>
50 #include <net/if.h>
51 #include <net/if_bridgevar.h>
52 #include <net/route.h>
53 
54 #include <ctype.h>
55 #include <stdio.h>
56 #include <string.h>
57 #include <stdlib.h>
58 #include <unistd.h>
59 #include <err.h>
60 #include <errno.h>
61 
62 #include "ifconfig.h"
63 
64 #define PV2ID(pv, epri, eaddr)  do {		\
65 		epri     = pv >> 48;		\
66 		eaddr[0] = pv >> 40;		\
67 		eaddr[1] = pv >> 32;		\
68 		eaddr[2] = pv >> 24;		\
69 		eaddr[3] = pv >> 16;		\
70 		eaddr[4] = pv >> 8;		\
71 		eaddr[5] = pv >> 0;		\
72 } while (0)
73 
74 static const char *stpstates[] = {
75 	"disabled",
76 	"listening",
77 	"learning",
78 	"forwarding",
79 	"blocking",
80 	"discarding"
81 };
82 static const char *stpproto[] = {
83 	"stp",
84 	"-",
85 	"rstp"
86 };
87 static const char *stproles[] = {
88 	"disabled",
89 	"root",
90 	"designated",
91 	"alternate",
92 	"backup"
93 };
94 
95 static int
96 get_val(const char *cp, u_long *valp)
97 {
98 	char *endptr;
99 	u_long val;
100 
101 	errno = 0;
102 	val = strtoul(cp, &endptr, 0);
103 	if (cp[0] == '\0' || endptr[0] != '\0' || errno == ERANGE)
104 		return (-1);
105 
106 	*valp = val;
107 	return (0);
108 }
109 
110 static int
111 do_cmd(int sock, u_long op, void *arg, size_t argsize, int set)
112 {
113 	struct ifdrv ifd;
114 
115 	memset(&ifd, 0, sizeof(ifd));
116 
117 	strlcpy(ifd.ifd_name, ifr.ifr_name, sizeof(ifd.ifd_name));
118 	ifd.ifd_cmd = op;
119 	ifd.ifd_len = argsize;
120 	ifd.ifd_data = arg;
121 
122 	return (ioctl(sock, set ? SIOCSDRVSPEC : SIOCGDRVSPEC, &ifd));
123 }
124 
125 static void
126 do_bridgeflag(int sock, const char *ifs, int flag, int set)
127 {
128 	struct ifbreq req;
129 
130 	strlcpy(req.ifbr_ifsname, ifs, sizeof(req.ifbr_ifsname));
131 
132 	if (do_cmd(sock, BRDGGIFFLGS, &req, sizeof(req), 0) < 0)
133 		err(1, "unable to get bridge flags");
134 
135 	if (set)
136 		req.ifbr_ifsflags |= flag;
137 	else
138 		req.ifbr_ifsflags &= ~flag;
139 
140 	if (do_cmd(sock, BRDGSIFFLGS, &req, sizeof(req), 1) < 0)
141 		err(1, "unable to set bridge flags");
142 }
143 
144 static void
145 bridge_interfaces(int s, const char *prefix)
146 {
147 	struct ifbifconf bifc;
148 	struct ifbreq *req;
149 	char *inbuf = NULL, *ninbuf;
150 	char *p, *pad;
151 	int i, len = 8192;
152 
153 	pad = strdup(prefix);
154 	if (pad == NULL)
155 		err(1, "strdup");
156 	/* replace the prefix with whitespace */
157 	for (p = pad; *p != '\0'; p++) {
158 		if(isprint(*p))
159 			*p = ' ';
160 	}
161 
162 	for (;;) {
163 		ninbuf = realloc(inbuf, len);
164 		if (ninbuf == NULL)
165 			err(1, "unable to allocate interface buffer");
166 		bifc.ifbic_len = len;
167 		bifc.ifbic_buf = inbuf = ninbuf;
168 		if (do_cmd(s, BRDGGIFS, &bifc, sizeof(bifc), 0) < 0)
169 			err(1, "unable to get interface list");
170 		if ((bifc.ifbic_len + sizeof(*req)) < len)
171 			break;
172 		len *= 2;
173 	}
174 
175 	for (i = 0; i < bifc.ifbic_len / sizeof(*req); i++) {
176 		req = bifc.ifbic_req + i;
177 		printf("%s%s ", prefix, req->ifbr_ifsname);
178 		printb("flags", req->ifbr_ifsflags, IFBIFBITS);
179 		printf("\n");
180 
181 		printf("%s", pad);
182 		printf("ifmaxaddr %u", req->ifbr_addrmax);
183 		printf(" port %u priority %u", req->ifbr_portno,
184 		    req->ifbr_priority);
185 		printf(" path cost %u", req->ifbr_path_cost);
186 
187 		if (req->ifbr_ifsflags & IFBIF_STP) {
188 			if (req->ifbr_proto <
189 			    sizeof(stpproto) / sizeof(stpproto[0]))
190 				printf(" proto %s", stpproto[req->ifbr_proto]);
191 			else
192 				printf(" <unknown proto %d>",
193 				    req->ifbr_proto);
194 
195 			printf("\n%s", pad);
196 			if (req->ifbr_role <
197 			    sizeof(stproles) / sizeof(stproles[0]))
198 				printf("role %s", stproles[req->ifbr_role]);
199 			else
200 				printf("<unknown role %d>",
201 				    req->ifbr_role);
202 			if (req->ifbr_state <
203 			    sizeof(stpstates) / sizeof(stpstates[0]))
204 				printf(" state %s", stpstates[req->ifbr_state]);
205 			else
206 				printf(" <unknown state %d>",
207 				    req->ifbr_state);
208 		}
209 		printf("\n");
210 	}
211 
212 	free(inbuf);
213 }
214 
215 static void
216 bridge_addresses(int s, const char *prefix)
217 {
218 	struct ifbaconf ifbac;
219 	struct ifbareq *ifba;
220 	char *inbuf = NULL, *ninbuf;
221 	int i, len = 8192;
222 	struct ether_addr ea;
223 
224 	for (;;) {
225 		ninbuf = realloc(inbuf, len);
226 		if (ninbuf == NULL)
227 			err(1, "unable to allocate address buffer");
228 		ifbac.ifbac_len = len;
229 		ifbac.ifbac_buf = inbuf = ninbuf;
230 		if (do_cmd(s, BRDGRTS, &ifbac, sizeof(ifbac), 0) < 0)
231 			err(1, "unable to get address cache");
232 		if ((ifbac.ifbac_len + sizeof(*ifba)) < len)
233 			break;
234 		len *= 2;
235 	}
236 
237 	for (i = 0; i < ifbac.ifbac_len / sizeof(*ifba); i++) {
238 		ifba = ifbac.ifbac_req + i;
239 		memcpy(ea.octet, ifba->ifba_dst,
240 		    sizeof(ea.octet));
241 		printf("%s%s Vlan%d %s %lu ", prefix, ether_ntoa(&ea),
242 		    ifba->ifba_vlan, ifba->ifba_ifsname, ifba->ifba_expire);
243 		printb("flags", ifba->ifba_flags, IFBAFBITS);
244 		printf("\n");
245 	}
246 
247 	free(inbuf);
248 }
249 
250 static void
251 bridge_status(int s)
252 {
253 	struct ifbropreq ifbp;
254 	struct ifbrparam param;
255 	u_int16_t pri;
256 	u_int8_t ht, fd, ma, hc, pro;
257 	u_int8_t lladdr[ETHER_ADDR_LEN];
258 	u_int16_t bprio;
259 	u_int32_t csize, ctime;
260 
261 	if (do_cmd(s, BRDGGCACHE, &param, sizeof(param), 0) < 0)
262 		return;
263 	csize = param.ifbrp_csize;
264 	if (do_cmd(s, BRDGGTO, &param, sizeof(param), 0) < 0)
265 		return;
266 	ctime = param.ifbrp_ctime;
267 	if (do_cmd(s, BRDGPARAM, &ifbp, sizeof(ifbp), 0) < 0)
268 		return;
269 	pri = ifbp.ifbop_priority;
270 	pro = ifbp.ifbop_protocol;
271 	ht = ifbp.ifbop_hellotime;
272 	fd = ifbp.ifbop_fwddelay;
273 	hc = ifbp.ifbop_holdcount;
274 	ma = ifbp.ifbop_maxage;
275 
276 	PV2ID(ifbp.ifbop_bridgeid, bprio, lladdr);
277 	printf("\tid %s priority %u hellotime %u fwddelay %u\n",
278 	    ether_ntoa((struct ether_addr *)lladdr), pri, ht, fd);
279 	printf("\tmaxage %u holdcnt %u proto %s maxaddr %u timeout %u\n",
280 	    ma, hc, stpproto[pro], csize, ctime);
281 
282 	PV2ID(ifbp.ifbop_designated_root, bprio, lladdr);
283 	printf("\troot id %s priority %d ifcost %u port %u\n",
284 	    ether_ntoa((struct ether_addr *)lladdr), bprio,
285 	    ifbp.ifbop_root_path_cost, ifbp.ifbop_root_port & 0xfff);
286 
287 	bridge_interfaces(s, "\tmember: ");
288 
289 	return;
290 
291 }
292 
293 static void
294 setbridge_add(const char *val, int d, int s, const struct afswtch *afp)
295 {
296 	struct ifbreq req;
297 
298 	memset(&req, 0, sizeof(req));
299 	strlcpy(req.ifbr_ifsname, val, sizeof(req.ifbr_ifsname));
300 	if (do_cmd(s, BRDGADD, &req, sizeof(req), 1) < 0)
301 		err(1, "BRDGADD %s",  val);
302 }
303 
304 static void
305 setbridge_delete(const char *val, int d, int s, const struct afswtch *afp)
306 {
307 	struct ifbreq req;
308 
309 	memset(&req, 0, sizeof(req));
310 	strlcpy(req.ifbr_ifsname, val, sizeof(req.ifbr_ifsname));
311 	if (do_cmd(s, BRDGDEL, &req, sizeof(req), 1) < 0)
312 		err(1, "BRDGDEL %s",  val);
313 }
314 
315 static void
316 setbridge_discover(const char *val, int d, int s, const struct afswtch *afp)
317 {
318 
319 	do_bridgeflag(s, val, IFBIF_DISCOVER, 1);
320 }
321 
322 static void
323 unsetbridge_discover(const char *val, int d, int s, const struct afswtch *afp)
324 {
325 
326 	do_bridgeflag(s, val, IFBIF_DISCOVER, 0);
327 }
328 
329 static void
330 setbridge_learn(const char *val, int d, int s, const struct afswtch *afp)
331 {
332 
333 	do_bridgeflag(s, val, IFBIF_LEARNING,  1);
334 }
335 
336 static void
337 unsetbridge_learn(const char *val, int d, int s, const struct afswtch *afp)
338 {
339 
340 	do_bridgeflag(s, val, IFBIF_LEARNING,  0);
341 }
342 
343 static void
344 setbridge_sticky(const char *val, int d, int s, const struct afswtch *afp)
345 {
346 
347 	do_bridgeflag(s, val, IFBIF_STICKY,  1);
348 }
349 
350 static void
351 unsetbridge_sticky(const char *val, int d, int s, const struct afswtch *afp)
352 {
353 
354 	do_bridgeflag(s, val, IFBIF_STICKY,  0);
355 }
356 
357 static void
358 setbridge_span(const char *val, int d, int s, const struct afswtch *afp)
359 {
360 	struct ifbreq req;
361 
362 	memset(&req, 0, sizeof(req));
363 	strlcpy(req.ifbr_ifsname, val, sizeof(req.ifbr_ifsname));
364 	if (do_cmd(s, BRDGADDS, &req, sizeof(req), 1) < 0)
365 		err(1, "BRDGADDS %s",  val);
366 }
367 
368 static void
369 unsetbridge_span(const char *val, int d, int s, const struct afswtch *afp)
370 {
371 	struct ifbreq req;
372 
373 	memset(&req, 0, sizeof(req));
374 	strlcpy(req.ifbr_ifsname, val, sizeof(req.ifbr_ifsname));
375 	if (do_cmd(s, BRDGDELS, &req, sizeof(req), 1) < 0)
376 		err(1, "BRDGDELS %s",  val);
377 }
378 
379 static void
380 setbridge_stp(const char *val, int d, int s, const struct afswtch *afp)
381 {
382 
383 	do_bridgeflag(s, val, IFBIF_STP, 1);
384 }
385 
386 static void
387 unsetbridge_stp(const char *val, int d, int s, const struct afswtch *afp)
388 {
389 
390 	do_bridgeflag(s, val, IFBIF_STP, 0);
391 }
392 
393 static void
394 setbridge_edge(const char *val, int d, int s, const struct afswtch *afp)
395 {
396 	do_bridgeflag(s, val, IFBIF_BSTP_EDGE, 1);
397 }
398 
399 static void
400 unsetbridge_edge(const char *val, int d, int s, const struct afswtch *afp)
401 {
402 	do_bridgeflag(s, val, IFBIF_BSTP_EDGE, 0);
403 }
404 
405 static void
406 setbridge_autoedge(const char *val, int d, int s, const struct afswtch *afp)
407 {
408 	do_bridgeflag(s, val, IFBIF_BSTP_AUTOEDGE, 1);
409 }
410 
411 static void
412 unsetbridge_autoedge(const char *val, int d, int s, const struct afswtch *afp)
413 {
414 	do_bridgeflag(s, val, IFBIF_BSTP_AUTOEDGE, 0);
415 }
416 
417 static void
418 setbridge_ptp(const char *val, int d, int s, const struct afswtch *afp)
419 {
420 	do_bridgeflag(s, val, IFBIF_BSTP_PTP, 1);
421 }
422 
423 static void
424 unsetbridge_ptp(const char *val, int d, int s, const struct afswtch *afp)
425 {
426 	do_bridgeflag(s, val, IFBIF_BSTP_PTP, 0);
427 }
428 
429 static void
430 setbridge_autoptp(const char *val, int d, int s, const struct afswtch *afp)
431 {
432 	do_bridgeflag(s, val, IFBIF_BSTP_AUTOPTP, 1);
433 }
434 
435 static void
436 unsetbridge_autoptp(const char *val, int d, int s, const struct afswtch *afp)
437 {
438 	do_bridgeflag(s, val, IFBIF_BSTP_AUTOPTP, 0);
439 }
440 
441 static void
442 setbridge_flush(const char *val, int d, int s, const struct afswtch *afp)
443 {
444 	struct ifbreq req;
445 
446 	memset(&req, 0, sizeof(req));
447 	req.ifbr_ifsflags = IFBF_FLUSHDYN;
448 	if (do_cmd(s, BRDGFLUSH, &req, sizeof(req), 1) < 0)
449 		err(1, "BRDGFLUSH");
450 }
451 
452 static void
453 setbridge_flushall(const char *val, int d, int s, const struct afswtch *afp)
454 {
455 	struct ifbreq req;
456 
457 	memset(&req, 0, sizeof(req));
458 	req.ifbr_ifsflags = IFBF_FLUSHALL;
459 	if (do_cmd(s, BRDGFLUSH, &req, sizeof(req), 1) < 0)
460 		err(1, "BRDGFLUSH");
461 }
462 
463 static void
464 setbridge_static(const char *val, const char *mac, int s,
465     const struct afswtch *afp)
466 {
467 	struct ifbareq req;
468 	struct ether_addr *ea;
469 
470 	memset(&req, 0, sizeof(req));
471 	strlcpy(req.ifba_ifsname, val, sizeof(req.ifba_ifsname));
472 
473 	ea = ether_aton(mac);
474 	if (ea == NULL)
475 		errx(1, "%s: invalid address: %s", val, mac);
476 
477 	memcpy(req.ifba_dst, ea->octet, sizeof(req.ifba_dst));
478 	req.ifba_flags = IFBAF_STATIC;
479 	req.ifba_vlan = 1; /* XXX allow user to specify */
480 
481 	if (do_cmd(s, BRDGSADDR, &req, sizeof(req), 1) < 0)
482 		err(1, "BRDGSADDR %s",  val);
483 }
484 
485 static void
486 setbridge_deladdr(const char *val, int d, int s, const struct afswtch *afp)
487 {
488 	struct ifbareq req;
489 	struct ether_addr *ea;
490 
491 	memset(&req, 0, sizeof(req));
492 
493 	ea = ether_aton(val);
494 	if (ea == NULL)
495 		errx(1, "invalid address: %s",  val);
496 
497 	memcpy(req.ifba_dst, ea->octet, sizeof(req.ifba_dst));
498 
499 	if (do_cmd(s, BRDGDADDR, &req, sizeof(req), 1) < 0)
500 		err(1, "BRDGDADDR %s",  val);
501 }
502 
503 static void
504 setbridge_addr(const char *val, int d, int s, const struct afswtch *afp)
505 {
506 
507 	bridge_addresses(s, "");
508 }
509 
510 static void
511 setbridge_maxaddr(const char *arg, int d, int s, const struct afswtch *afp)
512 {
513 	struct ifbrparam param;
514 	u_long val;
515 
516 	if (get_val(arg, &val) < 0 || (val & ~0xffffffff) != 0)
517 		errx(1, "invalid value: %s",  arg);
518 
519 	param.ifbrp_csize = val & 0xffffffff;
520 
521 	if (do_cmd(s, BRDGSCACHE, &param, sizeof(param), 1) < 0)
522 		err(1, "BRDGSCACHE %s",  arg);
523 }
524 
525 static void
526 setbridge_hellotime(const char *arg, int d, int s, const struct afswtch *afp)
527 {
528 	struct ifbrparam param;
529 	u_long val;
530 
531 	if (get_val(arg, &val) < 0 || (val & ~0xff) != 0)
532 		errx(1, "invalid value: %s",  arg);
533 
534 	param.ifbrp_hellotime = val & 0xff;
535 
536 	if (do_cmd(s, BRDGSHT, &param, sizeof(param), 1) < 0)
537 		err(1, "BRDGSHT %s",  arg);
538 }
539 
540 static void
541 setbridge_fwddelay(const char *arg, int d, int s, const struct afswtch *afp)
542 {
543 	struct ifbrparam param;
544 	u_long val;
545 
546 	if (get_val(arg, &val) < 0 || (val & ~0xff) != 0)
547 		errx(1, "invalid value: %s",  arg);
548 
549 	param.ifbrp_fwddelay = val & 0xff;
550 
551 	if (do_cmd(s, BRDGSFD, &param, sizeof(param), 1) < 0)
552 		err(1, "BRDGSFD %s",  arg);
553 }
554 
555 static void
556 setbridge_maxage(const char *arg, int d, int s, const struct afswtch *afp)
557 {
558 	struct ifbrparam param;
559 	u_long val;
560 
561 	if (get_val(arg, &val) < 0 || (val & ~0xff) != 0)
562 		errx(1, "invalid value: %s",  arg);
563 
564 	param.ifbrp_maxage = val & 0xff;
565 
566 	if (do_cmd(s, BRDGSMA, &param, sizeof(param), 1) < 0)
567 		err(1, "BRDGSMA %s",  arg);
568 }
569 
570 static void
571 setbridge_priority(const char *arg, int d, int s, const struct afswtch *afp)
572 {
573 	struct ifbrparam param;
574 	u_long val;
575 
576 	if (get_val(arg, &val) < 0 || (val & ~0xffff) != 0)
577 		errx(1, "invalid value: %s",  arg);
578 
579 	param.ifbrp_prio = val & 0xffff;
580 
581 	if (do_cmd(s, BRDGSPRI, &param, sizeof(param), 1) < 0)
582 		err(1, "BRDGSPRI %s",  arg);
583 }
584 
585 static void
586 setbridge_protocol(const char *arg, int d, int s, const struct afswtch *afp)
587 {
588 	struct ifbrparam param;
589 
590 	if (strcasecmp(arg, "stp") == 0) {
591 		param.ifbrp_proto = 0;
592 	} else if (strcasecmp(arg, "rstp") == 0) {
593 		param.ifbrp_proto = 2;
594 	} else {
595 		errx(1, "unknown stp protocol");
596 	}
597 
598 	if (do_cmd(s, BRDGSPROTO, &param, sizeof(param), 1) < 0)
599 		err(1, "BRDGSPROTO %s",  arg);
600 }
601 
602 static void
603 setbridge_holdcount(const char *arg, int d, int s, const struct afswtch *afp)
604 {
605 	struct ifbrparam param;
606 	u_long val;
607 
608 	if (get_val(arg, &val) < 0 || (val & ~0xff) != 0)
609 		errx(1, "invalid value: %s",  arg);
610 
611 	param.ifbrp_txhc = val & 0xff;
612 
613 	if (do_cmd(s, BRDGSTXHC, &param, sizeof(param), 1) < 0)
614 		err(1, "BRDGSTXHC %s",  arg);
615 }
616 
617 static void
618 setbridge_ifpriority(const char *ifn, const char *pri, int s,
619     const struct afswtch *afp)
620 {
621 	struct ifbreq req;
622 	u_long val;
623 
624 	memset(&req, 0, sizeof(req));
625 
626 	if (get_val(pri, &val) < 0 || (val & ~0xff) != 0)
627 		errx(1, "invalid value: %s",  pri);
628 
629 	strlcpy(req.ifbr_ifsname, ifn, sizeof(req.ifbr_ifsname));
630 	req.ifbr_priority = val & 0xff;
631 
632 	if (do_cmd(s, BRDGSIFPRIO, &req, sizeof(req), 1) < 0)
633 		err(1, "BRDGSIFPRIO %s",  pri);
634 }
635 
636 static void
637 setbridge_ifpathcost(const char *ifn, const char *cost, int s,
638     const struct afswtch *afp)
639 {
640 	struct ifbreq req;
641 	u_long val;
642 
643 	memset(&req, 0, sizeof(req));
644 
645 	if (get_val(cost, &val) < 0)
646 		errx(1, "invalid value: %s",  cost);
647 
648 	strlcpy(req.ifbr_ifsname, ifn, sizeof(req.ifbr_ifsname));
649 	req.ifbr_path_cost = val;
650 
651 	if (do_cmd(s, BRDGSIFCOST, &req, sizeof(req), 1) < 0)
652 		err(1, "BRDGSIFCOST %s",  cost);
653 }
654 
655 static void
656 setbridge_ifmaxaddr(const char *ifn, const char *arg, int s,
657     const struct afswtch *afp)
658 {
659 	struct ifbreq req;
660 	u_long val;
661 
662 	memset(&req, 0, sizeof(req));
663 
664 	if (get_val(arg, &val) < 0 || (val & ~0xffffffff) != 0)
665 		errx(1, "invalid value: %s",  arg);
666 
667 	strlcpy(req.ifbr_ifsname, ifn, sizeof(req.ifbr_ifsname));
668 	req.ifbr_addrmax = val & 0xffffffff;
669 
670 	if (do_cmd(s, BRDGSIFAMAX, &req, sizeof(req), 1) < 0)
671 		err(1, "BRDGSIFAMAX %s",  arg);
672 }
673 
674 static void
675 setbridge_timeout(const char *arg, int d, int s, const struct afswtch *afp)
676 {
677 	struct ifbrparam param;
678 	u_long val;
679 
680 	if (get_val(arg, &val) < 0 || (val & ~0xffffffff) != 0)
681 		errx(1, "invalid value: %s",  arg);
682 
683 	param.ifbrp_ctime = val & 0xffffffff;
684 
685 	if (do_cmd(s, BRDGSTO, &param, sizeof(param), 1) < 0)
686 		err(1, "BRDGSTO %s",  arg);
687 }
688 
689 static void
690 setbridge_private(const char *val, int d, int s, const struct afswtch *afp)
691 {
692 
693 	do_bridgeflag(s, val, IFBIF_PRIVATE, 1);
694 }
695 
696 static void
697 unsetbridge_private(const char *val, int d, int s, const struct afswtch *afp)
698 {
699 
700 	do_bridgeflag(s, val, IFBIF_PRIVATE, 0);
701 }
702 
703 static struct cmd bridge_cmds[] = {
704 	DEF_CMD_ARG("addm",		setbridge_add),
705 	DEF_CMD_ARG("deletem",		setbridge_delete),
706 	DEF_CMD_ARG("discover",		setbridge_discover),
707 	DEF_CMD_ARG("-discover",	unsetbridge_discover),
708 	DEF_CMD_ARG("learn",		setbridge_learn),
709 	DEF_CMD_ARG("-learn",		unsetbridge_learn),
710 	DEF_CMD_ARG("sticky",		setbridge_sticky),
711 	DEF_CMD_ARG("-sticky",		unsetbridge_sticky),
712 	DEF_CMD_ARG("span",		setbridge_span),
713 	DEF_CMD_ARG("-span",		unsetbridge_span),
714 	DEF_CMD_ARG("stp",		setbridge_stp),
715 	DEF_CMD_ARG("-stp",		unsetbridge_stp),
716 	DEF_CMD_ARG("edge",		setbridge_edge),
717 	DEF_CMD_ARG("-edge",		unsetbridge_edge),
718 	DEF_CMD_ARG("autoedge",		setbridge_autoedge),
719 	DEF_CMD_ARG("-autoedge",	unsetbridge_autoedge),
720 	DEF_CMD_ARG("ptp",		setbridge_ptp),
721 	DEF_CMD_ARG("-ptp",		unsetbridge_ptp),
722 	DEF_CMD_ARG("autoptp",		setbridge_autoptp),
723 	DEF_CMD_ARG("-autoptp",		unsetbridge_autoptp),
724 	DEF_CMD("flush", 0,		setbridge_flush),
725 	DEF_CMD("flushall", 0,		setbridge_flushall),
726 	DEF_CMD_ARG2("static",		setbridge_static),
727 	DEF_CMD_ARG("deladdr",		setbridge_deladdr),
728 	DEF_CMD("addr",	 1,		setbridge_addr),
729 	DEF_CMD_ARG("maxaddr",		setbridge_maxaddr),
730 	DEF_CMD_ARG("hellotime",	setbridge_hellotime),
731 	DEF_CMD_ARG("fwddelay",		setbridge_fwddelay),
732 	DEF_CMD_ARG("maxage",		setbridge_maxage),
733 	DEF_CMD_ARG("priority",		setbridge_priority),
734 	DEF_CMD_ARG("proto",		setbridge_protocol),
735 	DEF_CMD_ARG("holdcnt",		setbridge_holdcount),
736 	DEF_CMD_ARG2("ifpriority",	setbridge_ifpriority),
737 	DEF_CMD_ARG2("ifpathcost",	setbridge_ifpathcost),
738 	DEF_CMD_ARG2("ifmaxaddr",	setbridge_ifmaxaddr),
739 	DEF_CMD_ARG("timeout",		setbridge_timeout),
740 	DEF_CMD_ARG("private",		setbridge_private),
741 	DEF_CMD_ARG("-private",		unsetbridge_private),
742 };
743 static struct afswtch af_bridge = {
744 	.af_name	= "af_bridge",
745 	.af_af		= AF_UNSPEC,
746 	.af_other_status = bridge_status,
747 };
748 
749 static __constructor void
750 bridge_ctor(void)
751 {
752 #define	N(a)	(sizeof(a) / sizeof(a[0]))
753 	int i;
754 
755 	for (i = 0; i < N(bridge_cmds);  i++)
756 		cmd_register(&bridge_cmds[i]);
757 	af_register(&af_bridge);
758 #undef N
759 }
760