xref: /freebsd/sbin/etherswitchcfg/etherswitchcfg.c (revision 5ae59dec60e3815b621ae87f74a377cf3449ca55)
1 /*-
2  * Copyright (c) 2011-2012 Stefan Bethke.
3  * All rights reserved.
4  *
5  * Redistribution and use in source and binary forms, with or without
6  * modification, are permitted provided that the following conditions
7  * are met:
8  * 1. Redistributions of source code must retain the above copyright
9  *    notice, this list of conditions and the following disclaimer.
10  * 2. Redistributions in binary form must reproduce the above copyright
11  *    notice, this list of conditions and the following disclaimer in the
12  *    documentation and/or other materials provided with the distribution.
13  *
14  * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
15  * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
16  * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
17  * ARE DISCLAIMED.  IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
18  * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
19  * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
20  * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
21  * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
22  * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
23  * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
24  * SUCH DAMAGE.
25  *
26  * $FreeBSD$
27  */
28 
29 #include <sys/cdefs.h>
30 __FBSDID("$FreeBSD$");
31 
32 #include <ctype.h>
33 #include <err.h>
34 #include <errno.h>
35 #include <fcntl.h>
36 #include <stdio.h>
37 #include <stdlib.h>
38 #include <string.h>
39 #include <sysexits.h>
40 #include <unistd.h>
41 #include <sys/types.h>
42 #include <sys/ioctl.h>
43 #include <net/if.h>
44 #include <net/if_media.h>
45 #include <dev/etherswitch/etherswitch.h>
46 
47 int	get_media_subtype(int, const char *);
48 int	get_media_mode(int, const char *);
49 int	get_media_options(int, const char *);
50 int	lookup_media_word(struct ifmedia_description *, const char *);
51 void    print_media_word(int, int);
52 void    print_media_word_ifconfig(int);
53 
54 /* some constants */
55 #define IEEE802DOT1Q_VID_MAX	4094
56 #define IFMEDIAREQ_NULISTENTRIES	256
57 
58 enum cmdmode {
59 	MODE_NONE = 0,
60 	MODE_PORT,
61 	MODE_CONFIG,
62 	MODE_VLANGROUP,
63 	MODE_REGISTER,
64 	MODE_PHYREG
65 };
66 
67 struct cfg {
68 	int					fd;
69 	int					verbose;
70 	int					mediatypes;
71 	const char			*controlfile;
72 	etherswitch_conf_t	conf;
73 	etherswitch_info_t	info;
74 	enum cmdmode		mode;
75 	int					unit;
76 };
77 
78 struct cmds {
79 	enum cmdmode	mode;
80 	const char		*name;
81 	int				args;
82 	void 			(*f)(struct cfg *, char *argv[]);
83 };
84 static struct cmds cmds[];
85 
86 
87 /*
88  * Print a value a la the %b format of the kernel's printf.
89  * Stolen from ifconfig.c.
90  */
91 static void
92 printb(const char *s, unsigned v, const char *bits)
93 {
94 	int i, any = 0;
95 	char c;
96 
97 	if (bits && *bits == 8)
98 		printf("%s=%o", s, v);
99 	else
100 		printf("%s=%x", s, v);
101 	bits++;
102 	if (bits) {
103 		putchar('<');
104 		while ((i = *bits++) != '\0') {
105 			if (v & (1 << (i-1))) {
106 				if (any)
107 					putchar(',');
108 				any = 1;
109 				for (; (c = *bits) > 32; bits++)
110 					putchar(c);
111 			} else
112 				for (; *bits > 32; bits++)
113 					;
114 		}
115 		putchar('>');
116 	}
117 }
118 
119 static int
120 read_register(struct cfg *cfg, int r)
121 {
122 	struct etherswitch_reg er;
123 
124 	er.reg = r;
125 	if (ioctl(cfg->fd, IOETHERSWITCHGETREG, &er) != 0)
126 		err(EX_OSERR, "ioctl(IOETHERSWITCHGETREG)");
127 	return (er.val);
128 }
129 
130 static void
131 write_register(struct cfg *cfg, int r, int v)
132 {
133 	struct etherswitch_reg er;
134 
135 	er.reg = r;
136 	er.val = v;
137 	if (ioctl(cfg->fd, IOETHERSWITCHSETREG, &er) != 0)
138 		err(EX_OSERR, "ioctl(IOETHERSWITCHSETREG)");
139 }
140 
141 static int
142 read_phyregister(struct cfg *cfg, int phy, int reg)
143 {
144 	struct etherswitch_phyreg er;
145 
146 	er.phy = phy;
147 	er.reg = reg;
148 	if (ioctl(cfg->fd, IOETHERSWITCHGETPHYREG, &er) != 0)
149 		err(EX_OSERR, "ioctl(IOETHERSWITCHGETPHYREG)");
150 	return (er.val);
151 }
152 
153 static void
154 write_phyregister(struct cfg *cfg, int phy, int reg, int val)
155 {
156 	struct etherswitch_phyreg er;
157 
158 	er.phy = phy;
159 	er.reg = reg;
160 	er.val = val;
161 	if (ioctl(cfg->fd, IOETHERSWITCHSETPHYREG, &er) != 0)
162 		err(EX_OSERR, "ioctl(IOETHERSWITCHSETPHYREG)");
163 }
164 
165 static void
166 set_port_vid(struct cfg *cfg, char *argv[])
167 {
168 	int v;
169 	etherswitch_port_t p;
170 
171 	v = strtol(argv[1], NULL, 0);
172 	if (v < 0 || v > IEEE802DOT1Q_VID_MAX)
173 		errx(EX_USAGE, "pvid must be between 0 and %d",
174 		    IEEE802DOT1Q_VID_MAX);
175 	bzero(&p, sizeof(p));
176 	p.es_port = cfg->unit;
177 	if (ioctl(cfg->fd, IOETHERSWITCHGETPORT, &p) != 0)
178 		err(EX_OSERR, "ioctl(IOETHERSWITCHGETPORT)");
179 	p.es_pvid = v;
180 	if (ioctl(cfg->fd, IOETHERSWITCHSETPORT, &p) != 0)
181 		err(EX_OSERR, "ioctl(IOETHERSWITCHSETPORT)");
182 }
183 
184 static void
185 set_port_flag(struct cfg *cfg, char *argv[])
186 {
187 	char *flag;
188 	int n;
189 	uint32_t f;
190 	etherswitch_port_t p;
191 
192 	n = 0;
193 	f = 0;
194 	flag = argv[0];
195 	if (strcmp(flag, "none") != 0) {
196 		if (*flag == '-') {
197 			n++;
198 			flag++;
199 		}
200 		if (strcasecmp(flag, "striptag") == 0)
201 			f = ETHERSWITCH_PORT_STRIPTAG;
202 		else if (strcasecmp(flag, "addtag") == 0)
203 			f = ETHERSWITCH_PORT_ADDTAG;
204 		else if (strcasecmp(flag, "firstlock") == 0)
205 			f = ETHERSWITCH_PORT_FIRSTLOCK;
206 		else if (strcasecmp(flag, "dropuntagged") == 0)
207 			f = ETHERSWITCH_PORT_DROPUNTAGGED;
208 		else if (strcasecmp(flag, "doubletag") == 0)
209 			f = ETHERSWITCH_PORT_DOUBLE_TAG;
210 		else if (strcasecmp(flag, "ingress") == 0)
211 			f = ETHERSWITCH_PORT_INGRESS;
212 	}
213 	bzero(&p, sizeof(p));
214 	p.es_port = cfg->unit;
215 	if (ioctl(cfg->fd, IOETHERSWITCHGETPORT, &p) != 0)
216 		err(EX_OSERR, "ioctl(IOETHERSWITCHGETPORT)");
217 	if (n)
218 		p.es_flags &= ~f;
219 	else
220 		p.es_flags |= f;
221 	if (ioctl(cfg->fd, IOETHERSWITCHSETPORT, &p) != 0)
222 		err(EX_OSERR, "ioctl(IOETHERSWITCHSETPORT)");
223 }
224 
225 static void
226 set_port_media(struct cfg *cfg, char *argv[])
227 {
228 	etherswitch_port_t p;
229 	int ifm_ulist[IFMEDIAREQ_NULISTENTRIES];
230 	int subtype;
231 
232 	bzero(&p, sizeof(p));
233 	p.es_port = cfg->unit;
234 	p.es_ifmr.ifm_ulist = ifm_ulist;
235 	p.es_ifmr.ifm_count = IFMEDIAREQ_NULISTENTRIES;
236 	if (ioctl(cfg->fd, IOETHERSWITCHGETPORT, &p) != 0)
237 		err(EX_OSERR, "ioctl(IOETHERSWITCHGETPORT)");
238 	subtype = get_media_subtype(IFM_TYPE(ifm_ulist[0]), argv[1]);
239 	p.es_ifr.ifr_media = (p.es_ifmr.ifm_current & IFM_IMASK) |
240 	        IFM_TYPE(ifm_ulist[0]) | subtype;
241 	if (ioctl(cfg->fd, IOETHERSWITCHSETPORT, &p) != 0)
242 		err(EX_OSERR, "ioctl(IOETHERSWITCHSETPORT)");
243 }
244 
245 static void
246 set_port_mediaopt(struct cfg *cfg, char *argv[])
247 {
248 	etherswitch_port_t p;
249 	int ifm_ulist[IFMEDIAREQ_NULISTENTRIES];
250 	int options;
251 
252 	bzero(&p, sizeof(p));
253 	p.es_port = cfg->unit;
254 	p.es_ifmr.ifm_ulist = ifm_ulist;
255 	p.es_ifmr.ifm_count = IFMEDIAREQ_NULISTENTRIES;
256 	if (ioctl(cfg->fd, IOETHERSWITCHGETPORT, &p) != 0)
257 		err(EX_OSERR, "ioctl(IOETHERSWITCHGETPORT)");
258 	options = get_media_options(IFM_TYPE(ifm_ulist[0]), argv[1]);
259 	if (options == -1)
260 		errx(EX_USAGE, "invalid media options \"%s\"", argv[1]);
261 	if (options & IFM_HDX) {
262 		p.es_ifr.ifr_media &= ~IFM_FDX;
263 		options &= ~IFM_HDX;
264 	}
265 	p.es_ifr.ifr_media |= options;
266 	if (ioctl(cfg->fd, IOETHERSWITCHSETPORT, &p) != 0)
267 		err(EX_OSERR, "ioctl(IOETHERSWITCHSETPORT)");
268 }
269 
270 static void
271 set_vlangroup_vid(struct cfg *cfg, char *argv[])
272 {
273 	int v;
274 	etherswitch_vlangroup_t vg;
275 
276 	v = strtol(argv[1], NULL, 0);
277 	if (v < 0 || v > IEEE802DOT1Q_VID_MAX)
278 		errx(EX_USAGE, "vlan must be between 0 and %d", IEEE802DOT1Q_VID_MAX);
279 	vg.es_vlangroup = cfg->unit;
280 	if (ioctl(cfg->fd, IOETHERSWITCHGETVLANGROUP, &vg) != 0)
281 		err(EX_OSERR, "ioctl(IOETHERSWITCHGETVLANGROUP)");
282 	vg.es_vid = v;
283 	if (ioctl(cfg->fd, IOETHERSWITCHSETVLANGROUP, &vg) != 0)
284 		err(EX_OSERR, "ioctl(IOETHERSWITCHSETVLANGROUP)");
285 }
286 
287 static void
288 set_vlangroup_members(struct cfg *cfg, char *argv[])
289 {
290 	etherswitch_vlangroup_t vg;
291 	int member, untagged;
292 	char *c, *d;
293 	int v;
294 
295 	member = untagged = 0;
296 	if (strcmp(argv[1], "none") != 0) {
297 		for (c=argv[1]; *c; c=d) {
298 			v = strtol(c, &d, 0);
299 			if (d == c)
300 				break;
301 			if (v < 0 || v >= cfg->info.es_nports)
302 				errx(EX_USAGE, "Member port must be between 0 and %d", cfg->info.es_nports-1);
303 			if (d[0] == ',' || d[0] == '\0' ||
304 				((d[0] == 't' || d[0] == 'T') && (d[1] == ',' || d[1] == '\0'))) {
305 				if (d[0] == 't' || d[0] == 'T') {
306 					untagged &= ~ETHERSWITCH_PORTMASK(v);
307 					d++;
308 				} else
309 					untagged |= ETHERSWITCH_PORTMASK(v);
310 				member |= ETHERSWITCH_PORTMASK(v);
311 				d++;
312 			} else
313 				errx(EX_USAGE, "Invalid members specification \"%s\"", d);
314 		}
315 	}
316 	vg.es_vlangroup = cfg->unit;
317 	if (ioctl(cfg->fd, IOETHERSWITCHGETVLANGROUP, &vg) != 0)
318 		err(EX_OSERR, "ioctl(IOETHERSWITCHGETVLANGROUP)");
319 	vg.es_member_ports = member;
320 	vg.es_untagged_ports = untagged;
321 	if (ioctl(cfg->fd, IOETHERSWITCHSETVLANGROUP, &vg) != 0)
322 		err(EX_OSERR, "ioctl(IOETHERSWITCHSETVLANGROUP)");
323 }
324 
325 static int
326 set_register(struct cfg *cfg, char *arg)
327 {
328 	int a, v;
329 	char *c;
330 
331 	a = strtol(arg, &c, 0);
332 	if (c==arg)
333 		return (1);
334 	if (*c == '=') {
335 		v = strtol(c+1, NULL, 0);
336 		write_register(cfg, a, v);
337 	}
338 	printf("\treg 0x%04x=0x%04x\n", a, read_register(cfg, a));
339 	return (0);
340 }
341 
342 static int
343 set_phyregister(struct cfg *cfg, char *arg)
344 {
345 	int phy, reg, val;
346 	char *c, *d;
347 
348 	phy = strtol(arg, &c, 0);
349 	if (c==arg)
350 		return (1);
351 	if (*c != '.')
352 		return (1);
353 	d = c+1;
354 	reg = strtol(d, &c, 0);
355 	if (d == c)
356 		return (1);
357 	if (*c == '=') {
358 		val = strtol(c+1, NULL, 0);
359 		write_phyregister(cfg, phy, reg, val);
360 	}
361 	printf("\treg %d.0x%02x=0x%04x\n", phy, reg, read_phyregister(cfg, phy, reg));
362 	return (0);
363 }
364 
365 static void
366 set_vlan_mode(struct cfg *cfg, char *argv[])
367 {
368 	etherswitch_conf_t conf;
369 
370 	bzero(&conf, sizeof(conf));
371 	conf.cmd = ETHERSWITCH_CONF_VLAN_MODE;
372 	if (strcasecmp(argv[1], "isl") == 0)
373 		conf.vlan_mode = ETHERSWITCH_VLAN_ISL;
374 	else if (strcasecmp(argv[1], "port") == 0)
375 		conf.vlan_mode = ETHERSWITCH_VLAN_PORT;
376 	else if (strcasecmp(argv[1], "dot1q") == 0)
377 		conf.vlan_mode = ETHERSWITCH_VLAN_DOT1Q;
378 	else if (strcasecmp(argv[1], "dot1q4k") == 0)
379 		conf.vlan_mode = ETHERSWITCH_VLAN_DOT1Q_4K;
380 	else if (strcasecmp(argv[1], "qinq") == 0)
381 		conf.vlan_mode = ETHERSWITCH_VLAN_DOUBLE_TAG;
382 	else
383 		conf.vlan_mode = 0;
384 	if (ioctl(cfg->fd, IOETHERSWITCHSETCONF, &conf) != 0)
385 		err(EX_OSERR, "ioctl(IOETHERSWITCHSETCONF)");
386 }
387 
388 static void
389 print_config(struct cfg *cfg)
390 {
391 	const char *c;
392 
393 	/* Get the device name. */
394 	c = strrchr(cfg->controlfile, '/');
395 	if (c != NULL)
396 		c = c + 1;
397 	else
398 		c = cfg->controlfile;
399 
400 	/* Print VLAN mode. */
401 	if (cfg->conf.cmd & ETHERSWITCH_CONF_VLAN_MODE) {
402 		printf("%s: VLAN mode: ", c);
403 		switch (cfg->conf.vlan_mode) {
404 		case ETHERSWITCH_VLAN_ISL:
405 			printf("ISL\n");
406 			break;
407 		case ETHERSWITCH_VLAN_PORT:
408 			printf("PORT\n");
409 			break;
410 		case ETHERSWITCH_VLAN_DOT1Q:
411 			printf("DOT1Q\n");
412 			break;
413 		case ETHERSWITCH_VLAN_DOT1Q_4K:
414 			printf("DOT1Q4K\n");
415 			break;
416 		case ETHERSWITCH_VLAN_DOUBLE_TAG:
417 			printf("QinQ\n");
418 			break;
419 		default:
420 			printf("none\n");
421 		}
422 	}
423 }
424 
425 static void
426 print_port(struct cfg *cfg, int port)
427 {
428 	etherswitch_port_t p;
429 	int ifm_ulist[IFMEDIAREQ_NULISTENTRIES];
430 	int i;
431 
432 	bzero(&p, sizeof(p));
433 	p.es_port = port;
434 	p.es_ifmr.ifm_ulist = ifm_ulist;
435 	p.es_ifmr.ifm_count = IFMEDIAREQ_NULISTENTRIES;
436 	if (ioctl(cfg->fd, IOETHERSWITCHGETPORT, &p) != 0)
437 		err(EX_OSERR, "ioctl(IOETHERSWITCHGETPORT)");
438 	printf("port%d:\n", port);
439 	if (cfg->conf.vlan_mode == ETHERSWITCH_VLAN_DOT1Q)
440 		printf("\tpvid: %d\n", p.es_pvid);
441 	printb("\tflags", p.es_flags, ETHERSWITCH_PORT_FLAGS_BITS);
442 	printf("\n");
443 	printf("\tmedia: ");
444 	print_media_word(p.es_ifmr.ifm_current, 1);
445 	if (p.es_ifmr.ifm_active != p.es_ifmr.ifm_current) {
446 		putchar(' ');
447 		putchar('(');
448 		print_media_word(p.es_ifmr.ifm_active, 0);
449 		putchar(')');
450 	}
451 	putchar('\n');
452 	printf("\tstatus: %s\n", (p.es_ifmr.ifm_status & IFM_ACTIVE) != 0 ? "active" : "no carrier");
453 	if (cfg->mediatypes) {
454 		printf("\tsupported media:\n");
455 		if (p.es_ifmr.ifm_count > IFMEDIAREQ_NULISTENTRIES)
456 			p.es_ifmr.ifm_count = IFMEDIAREQ_NULISTENTRIES;
457 		for (i=0; i<p.es_ifmr.ifm_count; i++) {
458 			printf("\t\tmedia ");
459 			print_media_word(ifm_ulist[i], 0);
460 			putchar('\n');
461 		}
462 	}
463 }
464 
465 static void
466 print_vlangroup(struct cfg *cfg, int vlangroup)
467 {
468 	etherswitch_vlangroup_t vg;
469 	int i, comma;
470 
471 	vg.es_vlangroup = vlangroup;
472 	if (ioctl(cfg->fd, IOETHERSWITCHGETVLANGROUP, &vg) != 0)
473 		err(EX_OSERR, "ioctl(IOETHERSWITCHGETVLANGROUP)");
474 	if ((vg.es_vid & ETHERSWITCH_VID_VALID) == 0)
475 		return;
476 	vg.es_vid &= ETHERSWITCH_VID_MASK;
477 	printf("vlangroup%d:\n", vlangroup);
478 	if (cfg->conf.vlan_mode == ETHERSWITCH_VLAN_PORT)
479 		printf("\tport: %d\n", vg.es_vid);
480 	else
481 		printf("\tvlan: %d\n", vg.es_vid);
482 	printf("\tmembers ");
483 	comma = 0;
484 	if (vg.es_member_ports != 0)
485 		for (i=0; i<cfg->info.es_nports; i++) {
486 			if ((vg.es_member_ports & ETHERSWITCH_PORTMASK(i)) != 0) {
487 				if (comma)
488 					printf(",");
489 				printf("%d", i);
490 				if ((vg.es_untagged_ports & ETHERSWITCH_PORTMASK(i)) == 0)
491 					printf("t");
492 				comma = 1;
493 			}
494 		}
495 	else
496 		printf("none");
497 	printf("\n");
498 }
499 
500 static void
501 print_info(struct cfg *cfg)
502 {
503 	const char *c;
504 	int i;
505 
506 	c = strrchr(cfg->controlfile, '/');
507 	if (c != NULL)
508 		c = c + 1;
509 	else
510 		c = cfg->controlfile;
511 	if (cfg->verbose) {
512 		printf("%s: %s with %d ports and %d VLAN groups\n", c,
513 		    cfg->info.es_name, cfg->info.es_nports,
514 		    cfg->info.es_nvlangroups);
515 		printf("%s: ", c);
516 		printb("VLAN capabilities",  cfg->info.es_vlan_caps,
517 		    ETHERSWITCH_VLAN_CAPS_BITS);
518 		printf("\n");
519 	}
520 	print_config(cfg);
521 	for (i=0; i<cfg->info.es_nports; i++) {
522 		print_port(cfg, i);
523 	}
524 	for (i=0; i<cfg->info.es_nvlangroups; i++) {
525 		print_vlangroup(cfg, i);
526 	}
527 }
528 
529 static void
530 usage(struct cfg *cfg __unused, char *argv[] __unused)
531 {
532 	fprintf(stderr, "usage: etherswitchctl\n");
533 	fprintf(stderr, "\tetherswitchcfg [-f control file] info\n");
534 	fprintf(stderr, "\tetherswitchcfg [-f control file] config "
535 	    "command parameter\n");
536 	fprintf(stderr, "\t\tconfig commands: vlan_mode\n");
537 	fprintf(stderr, "\tetherswitchcfg [-f control file] phy "
538 	    "phy.register[=value]\n");
539 	fprintf(stderr, "\tetherswitchcfg [-f control file] portX "
540 	    "[flags] command parameter\n");
541 	fprintf(stderr, "\t\tport commands: pvid, media, mediaopt\n");
542 	fprintf(stderr, "\tetherswitchcfg [-f control file] reg "
543 	    "register[=value]\n");
544 	fprintf(stderr, "\tetherswitchcfg [-f control file] vlangroupX "
545 	    "command parameter\n");
546 	fprintf(stderr, "\t\tvlangroup commands: vlan, members\n");
547 	exit(EX_USAGE);
548 }
549 
550 static void
551 newmode(struct cfg *cfg, enum cmdmode mode)
552 {
553 	if (mode == cfg->mode)
554 		return;
555 	switch (cfg->mode) {
556 	case MODE_NONE:
557 		break;
558 	case MODE_CONFIG:
559 		/*
560 		 * Read the updated the configuration (it can be different
561 		 * from the last time we read it).
562 		 */
563 		if (ioctl(cfg->fd, IOETHERSWITCHGETCONF, &cfg->conf) != 0)
564 			err(EX_OSERR, "ioctl(IOETHERSWITCHGETCONF)");
565 		print_config(cfg);
566 		break;
567 	case MODE_PORT:
568 		print_port(cfg, cfg->unit);
569 		break;
570 	case MODE_VLANGROUP:
571 		print_vlangroup(cfg, cfg->unit);
572 		break;
573 	case MODE_REGISTER:
574 	case MODE_PHYREG:
575 		break;
576 	}
577 	cfg->mode = mode;
578 }
579 
580 int
581 main(int argc, char *argv[])
582 {
583 	int ch;
584 	struct cfg cfg;
585 	int i;
586 
587 	bzero(&cfg, sizeof(cfg));
588 	cfg.controlfile = "/dev/etherswitch0";
589 	while ((ch = getopt(argc, argv, "f:mv?")) != -1)
590 		switch(ch) {
591 		case 'f':
592 			cfg.controlfile = optarg;
593 			break;
594 		case 'm':
595 			cfg.mediatypes++;
596 			break;
597 		case 'v':
598 			cfg.verbose++;
599 			break;
600 		case '?':
601 			/* FALLTHROUGH */
602 		default:
603 			usage(&cfg, argv);
604 		}
605 	argc -= optind;
606 	argv += optind;
607 	cfg.fd = open(cfg.controlfile, O_RDONLY);
608 	if (cfg.fd < 0)
609 		err(EX_UNAVAILABLE, "Can't open control file: %s", cfg.controlfile);
610 	if (ioctl(cfg.fd, IOETHERSWITCHGETINFO, &cfg.info) != 0)
611 		err(EX_OSERR, "ioctl(IOETHERSWITCHGETINFO)");
612 	if (ioctl(cfg.fd, IOETHERSWITCHGETCONF, &cfg.conf) != 0)
613 		err(EX_OSERR, "ioctl(IOETHERSWITCHGETCONF)");
614 	if (argc == 0) {
615 		print_info(&cfg);
616 		return (0);
617 	}
618 	cfg.mode = MODE_NONE;
619 	while (argc > 0) {
620 		switch(cfg.mode) {
621 		case MODE_NONE:
622 			if (strcmp(argv[0], "info") == 0) {
623 				print_info(&cfg);
624 			} else if (sscanf(argv[0], "port%d", &cfg.unit) == 1) {
625 				if (cfg.unit < 0 || cfg.unit >= cfg.info.es_nports)
626 					errx(EX_USAGE, "port unit must be between 0 and %d", cfg.info.es_nports - 1);
627 				newmode(&cfg, MODE_PORT);
628 			} else if (sscanf(argv[0], "vlangroup%d", &cfg.unit) == 1) {
629 				if (cfg.unit < 0 || cfg.unit >= cfg.info.es_nvlangroups)
630 					errx(EX_USAGE,
631 					    "vlangroup unit must be between 0 and %d",
632 					    cfg.info.es_nvlangroups - 1);
633 				newmode(&cfg, MODE_VLANGROUP);
634 			} else if (strcmp(argv[0], "config") == 0) {
635 				newmode(&cfg, MODE_CONFIG);
636 			} else if (strcmp(argv[0], "phy") == 0) {
637 				newmode(&cfg, MODE_PHYREG);
638 			} else if (strcmp(argv[0], "reg") == 0) {
639 				newmode(&cfg, MODE_REGISTER);
640 			} else if (strcmp(argv[0], "help") == 0) {
641 				usage(&cfg, argv);
642 			} else {
643 				errx(EX_USAGE, "Unknown command \"%s\"", argv[0]);
644 			}
645 			break;
646 		case MODE_PORT:
647 		case MODE_CONFIG:
648 		case MODE_VLANGROUP:
649 			for(i=0; cmds[i].name != NULL; i++) {
650 				if (cfg.mode == cmds[i].mode && strcmp(argv[0], cmds[i].name) == 0) {
651 					if (argc < (cmds[i].args + 1)) {
652 						printf("%s needs an argument\n", cmds[i].name);
653 						break;
654 					}
655 					(cmds[i].f)(&cfg, argv);
656 					argc -= cmds[i].args;
657 					argv += cmds[i].args;
658 					break;
659 				}
660 			}
661 			if (cmds[i].name == NULL) {
662 				newmode(&cfg, MODE_NONE);
663 				continue;
664 			}
665 			break;
666 		case MODE_REGISTER:
667 			if (set_register(&cfg, argv[0]) != 0) {
668 				newmode(&cfg, MODE_NONE);
669 				continue;
670 			}
671 			break;
672 		case MODE_PHYREG:
673 			if (set_phyregister(&cfg, argv[0]) != 0) {
674 				newmode(&cfg, MODE_NONE);
675 				continue;
676 			}
677 			break;
678 		}
679 		argc--;
680 		argv++;
681 	}
682 	/* switch back to command mode to print configuration for last command */
683 	newmode(&cfg, MODE_NONE);
684 	close(cfg.fd);
685 	return (0);
686 }
687 
688 static struct cmds cmds[] = {
689 	{ MODE_PORT, "pvid", 1, set_port_vid },
690 	{ MODE_PORT, "media", 1, set_port_media },
691 	{ MODE_PORT, "mediaopt", 1, set_port_mediaopt },
692 	{ MODE_PORT, "addtag", 0, set_port_flag },
693 	{ MODE_PORT, "-addtag", 0, set_port_flag },
694 	{ MODE_PORT, "ingress", 0, set_port_flag },
695 	{ MODE_PORT, "-ingress", 0, set_port_flag },
696 	{ MODE_PORT, "striptag", 0, set_port_flag },
697 	{ MODE_PORT, "-striptag", 0, set_port_flag },
698 	{ MODE_PORT, "doubletag", 0, set_port_flag },
699 	{ MODE_PORT, "-doubletag", 0, set_port_flag },
700 	{ MODE_PORT, "firstlock", 0, set_port_flag },
701 	{ MODE_PORT, "-firstlock", 0, set_port_flag },
702 	{ MODE_PORT, "dropuntagged", 0, set_port_flag },
703 	{ MODE_PORT, "-dropuntagged", 0, set_port_flag },
704 	{ MODE_CONFIG, "vlan_mode", 1, set_vlan_mode },
705 	{ MODE_VLANGROUP, "vlan", 1, set_vlangroup_vid },
706 	{ MODE_VLANGROUP, "members", 1, set_vlangroup_members },
707 	{ 0, NULL, 0, NULL }
708 };
709