1/*	$NetBSD: ifconfig.c,v 1.34 1997/04/21 01:17:58 lukem Exp $	*/
2
3/*-
4 * SPDX-License-Identifier: BSD-4-Clause
5 *
6 * Copyright (c) 1997 Jason R. Thorpe.
7 * All rights reserved.
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
20 *	by Jason R. Thorpe.
21 * 4. The name of the author may not be used to endorse or promote products
22 *    derived from this software without specific prior written permission.
23 *
24 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
25 * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
26 * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
27 * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
28 * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING,
29 * BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
30 * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED
31 * AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
32 * OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
33 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
34 * SUCH DAMAGE.
35 */
36
37/*
38 * Copyright (c) 1983, 1993
39 *	The Regents of the University of California.  All rights reserved.
40 *
41 * Redistribution and use in source and binary forms, with or without
42 * modification, are permitted provided that the following conditions
43 * are met:
44 * 1. Redistributions of source code must retain the above copyright
45 *    notice, this list of conditions and the following disclaimer.
46 * 2. Redistributions in binary form must reproduce the above copyright
47 *    notice, this list of conditions and the following disclaimer in the
48 *    documentation and/or other materials provided with the distribution.
49 * 4. Neither the name of the University nor the names of its contributors
50 *    may be used to endorse or promote products derived from this software
51 *    without specific prior written permission.
52 *
53 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
54 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
55 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
56 * ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
57 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
58 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
59 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
60 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
61 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
62 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
63 * SUCH DAMAGE.
64 */
65/*
66 * based on sbin/ifconfig/ifmedia.c r221954
67 */
68
69#include <sys/param.h>
70#include <sys/ioctl.h>
71#include <sys/socket.h>
72#include <sys/sysctl.h>
73#include <sys/time.h>
74
75#include <net/if.h>
76#include <net/if_dl.h>
77#include <net/if_types.h>
78#include <net/if_media.h>
79#include <net/route.h>
80
81#include <ctype.h>
82#include <err.h>
83#include <errno.h>
84#include <fcntl.h>
85#include <stdio.h>
86#include <stdlib.h>
87#include <string.h>
88#include <unistd.h>
89
90void	domediaopt(const char *, int, int);
91int	get_media_subtype(int, const char *);
92int	get_media_mode(int, const char *);
93int	get_media_options(int, const char *);
94int	lookup_media_word(struct ifmedia_description *, const char *);
95void	print_media_word(int, int);
96void	print_media_word_ifconfig(int);
97
98#if 0
99static struct ifmedia_description *get_toptype_desc(int);
100static struct ifmedia_type_to_subtype *get_toptype_ttos(int);
101static struct ifmedia_description *get_subtype_desc(int,
102    struct ifmedia_type_to_subtype *ttos);
103
104#define	IFM_OPMODE(x) \
105	((x) & (IFM_IEEE80211_ADHOC | IFM_IEEE80211_HOSTAP | \
106	 IFM_IEEE80211_IBSS | IFM_IEEE80211_WDS | IFM_IEEE80211_MONITOR | \
107	 IFM_IEEE80211_MBSS))
108#define	IFM_IEEE80211_STA	0
109
110static void
111media_status(int s)
112{
113	struct ifmediareq ifmr;
114	int *media_list, i;
115
116	(void) memset(&ifmr, 0, sizeof(ifmr));
117	(void) strncpy(ifmr.ifm_name, name, sizeof(ifmr.ifm_name));
118
119	if (ioctl(s, SIOCGIFMEDIA, (caddr_t)&ifmr) < 0) {
120		/*
121		 * Interface doesn't support SIOC{G,S}IFMEDIA.
122		 */
123		return;
124	}
125
126	if (ifmr.ifm_count == 0) {
127		warnx("%s: no media types?", name);
128		return;
129	}
130
131	media_list = (int *)malloc(ifmr.ifm_count * sizeof(int));
132	if (media_list == NULL)
133		err(1, "malloc");
134	ifmr.ifm_ulist = media_list;
135
136	if (ioctl(s, SIOCGIFMEDIA, (caddr_t)&ifmr) < 0)
137		err(1, "SIOCGIFMEDIA");
138
139	printf("\tmedia: ");
140	print_media_word(ifmr.ifm_current, 1);
141	if (ifmr.ifm_active != ifmr.ifm_current) {
142		putchar(' ');
143		putchar('(');
144		print_media_word(ifmr.ifm_active, 0);
145		putchar(')');
146	}
147
148	putchar('\n');
149
150	if (ifmr.ifm_status & IFM_AVALID) {
151		printf("\tstatus: ");
152		switch (IFM_TYPE(ifmr.ifm_active)) {
153		case IFM_ETHER:
154		case IFM_ATM:
155			if (ifmr.ifm_status & IFM_ACTIVE)
156				printf("active");
157			else
158				printf("no carrier");
159			break;
160
161		case IFM_IEEE80211:
162			if (ifmr.ifm_status & IFM_ACTIVE) {
163				/* NB: only sta mode associates */
164				if (IFM_OPMODE(ifmr.ifm_active) == IFM_IEEE80211_STA)
165					printf("associated");
166				else
167					printf("running");
168			} else
169				printf("no carrier");
170			break;
171		}
172		putchar('\n');
173	}
174
175	if (ifmr.ifm_count > 0 && supmedia) {
176		printf("\tsupported media:\n");
177		for (i = 0; i < ifmr.ifm_count; i++) {
178			printf("\t\t");
179			print_media_word_ifconfig(media_list[i]);
180			putchar('\n');
181		}
182	}
183
184	free(media_list);
185}
186
187struct ifmediareq *
188ifmedia_getstate(int s)
189{
190	static struct ifmediareq *ifmr = NULL;
191	int *mwords;
192
193	if (ifmr == NULL) {
194		ifmr = (struct ifmediareq *)malloc(sizeof(struct ifmediareq));
195		if (ifmr == NULL)
196			err(1, "malloc");
197
198		(void) memset(ifmr, 0, sizeof(struct ifmediareq));
199		(void) strncpy(ifmr->ifm_name, name,
200		    sizeof(ifmr->ifm_name));
201
202		ifmr->ifm_count = 0;
203		ifmr->ifm_ulist = NULL;
204
205		/*
206		 * We must go through the motions of reading all
207		 * supported media because we need to know both
208		 * the current media type and the top-level type.
209		 */
210
211		if (ioctl(s, SIOCGIFMEDIA, (caddr_t)ifmr) < 0) {
212			err(1, "SIOCGIFMEDIA");
213		}
214
215		if (ifmr->ifm_count == 0)
216			errx(1, "%s: no media types?", name);
217
218		mwords = (int *)malloc(ifmr->ifm_count * sizeof(int));
219		if (mwords == NULL)
220			err(1, "malloc");
221
222		ifmr->ifm_ulist = mwords;
223		if (ioctl(s, SIOCGIFMEDIA, (caddr_t)ifmr) < 0)
224			err(1, "SIOCGIFMEDIA");
225	}
226
227	return ifmr;
228}
229
230static void
231setifmediacallback(int s, void *arg)
232{
233	struct ifmediareq *ifmr = (struct ifmediareq *)arg;
234	static int did_it = 0;
235
236	if (!did_it) {
237		ifr.ifr_media = ifmr->ifm_current;
238		if (ioctl(s, SIOCSIFMEDIA, (caddr_t)&ifr) < 0)
239			err(1, "SIOCSIFMEDIA (media)");
240		free(ifmr->ifm_ulist);
241		free(ifmr);
242		did_it = 1;
243	}
244}
245
246static void
247setmedia(const char *val, int d, int s, const struct afswtch *afp)
248{
249	struct ifmediareq *ifmr;
250	int subtype;
251
252	ifmr = ifmedia_getstate(s);
253
254	/*
255	 * We are primarily concerned with the top-level type.
256	 * However, "current" may be only IFM_NONE, so we just look
257	 * for the top-level type in the first "supported type"
258	 * entry.
259	 *
260	 * (I'm assuming that all supported media types for a given
261	 * interface will be the same top-level type..)
262	 */
263	subtype = get_media_subtype(IFM_TYPE(ifmr->ifm_ulist[0]), val);
264
265	strncpy(ifr.ifr_name, name, sizeof(ifr.ifr_name));
266	ifr.ifr_media = (ifmr->ifm_current & IFM_IMASK) |
267	    IFM_TYPE(ifmr->ifm_ulist[0]) | subtype;
268
269	ifmr->ifm_current = ifr.ifr_media;
270	callback_register(setifmediacallback, (void *)ifmr);
271}
272
273static void
274setmediaopt(const char *val, int d, int s, const struct afswtch *afp)
275{
276
277	domediaopt(val, 0, s);
278}
279
280static void
281unsetmediaopt(const char *val, int d, int s, const struct afswtch *afp)
282{
283
284	domediaopt(val, 1, s);
285}
286
287static void
288domediaopt(const char *val, int clear, int s)
289{
290	struct ifmediareq *ifmr;
291	int options;
292
293	ifmr = ifmedia_getstate(s);
294
295	options = get_media_options(IFM_TYPE(ifmr->ifm_ulist[0]), val);
296
297	strncpy(ifr.ifr_name, name, sizeof(ifr.ifr_name));
298	ifr.ifr_media = ifmr->ifm_current;
299	if (clear)
300		ifr.ifr_media &= ~options;
301	else {
302		if (options & IFM_HDX) {
303			ifr.ifr_media &= ~IFM_FDX;
304			options &= ~IFM_HDX;
305		}
306		ifr.ifr_media |= options;
307	}
308	ifmr->ifm_current = ifr.ifr_media;
309	callback_register(setifmediacallback, (void *)ifmr);
310}
311
312static void
313setmediainst(const char *val, int d, int s, const struct afswtch *afp)
314{
315	struct ifmediareq *ifmr;
316	int inst;
317
318	ifmr = ifmedia_getstate(s);
319
320	inst = atoi(val);
321	if (inst < 0 || inst > (int)IFM_INST_MAX)
322		errx(1, "invalid media instance: %s", val);
323
324	strncpy(ifr.ifr_name, name, sizeof(ifr.ifr_name));
325	ifr.ifr_media = (ifmr->ifm_current & ~IFM_IMASK) | inst << IFM_ISHIFT;
326
327	ifmr->ifm_current = ifr.ifr_media;
328	callback_register(setifmediacallback, (void *)ifmr);
329}
330
331static void
332setmediamode(const char *val, int d, int s, const struct afswtch *afp)
333{
334	struct ifmediareq *ifmr;
335	int mode;
336
337	ifmr = ifmedia_getstate(s);
338
339	mode = get_media_mode(IFM_TYPE(ifmr->ifm_ulist[0]), val);
340
341	strncpy(ifr.ifr_name, name, sizeof(ifr.ifr_name));
342	ifr.ifr_media = (ifmr->ifm_current & ~IFM_MMASK) | mode;
343
344	ifmr->ifm_current = ifr.ifr_media;
345	callback_register(setifmediacallback, (void *)ifmr);
346}
347#endif
348
349/**********************************************************************
350 * A good chunk of this is duplicated from sys/net/ifmedia.c
351 **********************************************************************/
352
353static struct ifmedia_description ifm_type_descriptions[] =
354    IFM_TYPE_DESCRIPTIONS;
355
356static struct ifmedia_description ifm_subtype_ethernet_descriptions[] =
357    IFM_SUBTYPE_ETHERNET_DESCRIPTIONS;
358
359static struct ifmedia_description ifm_subtype_ethernet_aliases[] =
360    IFM_SUBTYPE_ETHERNET_ALIASES;
361
362static struct ifmedia_description ifm_subtype_ethernet_option_descriptions[] =
363    IFM_SUBTYPE_ETHERNET_OPTION_DESCRIPTIONS;
364
365static struct ifmedia_description ifm_subtype_ieee80211_descriptions[] =
366    IFM_SUBTYPE_IEEE80211_DESCRIPTIONS;
367
368static struct ifmedia_description ifm_subtype_ieee80211_aliases[] =
369    IFM_SUBTYPE_IEEE80211_ALIASES;
370
371static struct ifmedia_description ifm_subtype_ieee80211_option_descriptions[] =
372    IFM_SUBTYPE_IEEE80211_OPTION_DESCRIPTIONS;
373
374static struct ifmedia_description ifm_subtype_ieee80211_mode_descriptions[] =
375    IFM_SUBTYPE_IEEE80211_MODE_DESCRIPTIONS;
376
377static struct ifmedia_description ifm_subtype_ieee80211_mode_aliases[] =
378    IFM_SUBTYPE_IEEE80211_MODE_ALIASES;
379
380static struct ifmedia_description ifm_subtype_atm_descriptions[] =
381    IFM_SUBTYPE_ATM_DESCRIPTIONS;
382
383static struct ifmedia_description ifm_subtype_atm_aliases[] =
384    IFM_SUBTYPE_ATM_ALIASES;
385
386static struct ifmedia_description ifm_subtype_atm_option_descriptions[] =
387    IFM_SUBTYPE_ATM_OPTION_DESCRIPTIONS;
388
389static struct ifmedia_description ifm_subtype_shared_descriptions[] =
390    IFM_SUBTYPE_SHARED_DESCRIPTIONS;
391
392static struct ifmedia_description ifm_subtype_shared_aliases[] =
393    IFM_SUBTYPE_SHARED_ALIASES;
394
395static struct ifmedia_description ifm_shared_option_descriptions[] =
396    IFM_SHARED_OPTION_DESCRIPTIONS;
397
398static struct ifmedia_description ifm_shared_option_aliases[] =
399    IFM_SHARED_OPTION_ALIASES;
400
401struct ifmedia_type_to_subtype {
402	struct {
403		struct ifmedia_description *desc;
404		int alias;
405	} subtypes[5];
406	struct {
407		struct ifmedia_description *desc;
408		int alias;
409	} options[4];
410	struct {
411		struct ifmedia_description *desc;
412		int alias;
413	} modes[3];
414};
415
416/* must be in the same order as IFM_TYPE_DESCRIPTIONS */
417static struct ifmedia_type_to_subtype ifmedia_types_to_subtypes[] = {
418	{
419		{
420			{ &ifm_subtype_shared_descriptions[0], 0 },
421			{ &ifm_subtype_shared_aliases[0], 1 },
422			{ &ifm_subtype_ethernet_descriptions[0], 0 },
423			{ &ifm_subtype_ethernet_aliases[0], 1 },
424			{ NULL, 0 },
425		},
426		{
427			{ &ifm_shared_option_descriptions[0], 0 },
428			{ &ifm_shared_option_aliases[0], 1 },
429			{ &ifm_subtype_ethernet_option_descriptions[0], 0 },
430			{ NULL, 0 },
431		},
432		{
433			{ NULL, 0 },
434		},
435	},
436	{
437		{
438			{ &ifm_subtype_shared_descriptions[0], 0 },
439			{ &ifm_subtype_shared_aliases[0], 1 },
440			{ &ifm_subtype_ieee80211_descriptions[0], 0 },
441			{ &ifm_subtype_ieee80211_aliases[0], 1 },
442			{ NULL, 0 },
443		},
444		{
445			{ &ifm_shared_option_descriptions[0], 0 },
446			{ &ifm_shared_option_aliases[0], 1 },
447			{ &ifm_subtype_ieee80211_option_descriptions[0], 0 },
448			{ NULL, 0 },
449		},
450		{
451			{ &ifm_subtype_ieee80211_mode_descriptions[0], 0 },
452			{ &ifm_subtype_ieee80211_mode_aliases[0], 0 },
453			{ NULL, 0 },
454		},
455	},
456	{
457		{
458			{ &ifm_subtype_shared_descriptions[0], 0 },
459			{ &ifm_subtype_shared_aliases[0], 1 },
460			{ &ifm_subtype_atm_descriptions[0], 0 },
461			{ &ifm_subtype_atm_aliases[0], 1 },
462			{ NULL, 0 },
463		},
464		{
465			{ &ifm_shared_option_descriptions[0], 0 },
466			{ &ifm_shared_option_aliases[0], 1 },
467			{ &ifm_subtype_atm_option_descriptions[0], 0 },
468			{ NULL, 0 },
469		},
470		{
471			{ NULL, 0 },
472		},
473	},
474};
475
476int
477get_media_subtype(int type, const char *val)
478{
479	struct ifmedia_description *desc;
480	struct ifmedia_type_to_subtype *ttos;
481	int rval, i;
482
483	/* Find the top-level interface type. */
484	for (desc = ifm_type_descriptions, ttos = ifmedia_types_to_subtypes;
485	    desc->ifmt_string != NULL; desc++, ttos++)
486		if (type == desc->ifmt_word)
487			break;
488	if (desc->ifmt_string == NULL)
489		errx(1, "unknown media type 0x%x", type);
490
491	for (i = 0; ttos->subtypes[i].desc != NULL; i++) {
492		rval = lookup_media_word(ttos->subtypes[i].desc, val);
493		if (rval != -1)
494			return (rval);
495	}
496	errx(1, "unknown media subtype: %s", val);
497	/*NOTREACHED*/
498}
499
500int
501get_media_mode(int type, const char *val)
502{
503	struct ifmedia_description *desc;
504	struct ifmedia_type_to_subtype *ttos;
505	int rval, i;
506
507	/* Find the top-level interface type. */
508	for (desc = ifm_type_descriptions, ttos = ifmedia_types_to_subtypes;
509	    desc->ifmt_string != NULL; desc++, ttos++)
510		if (type == desc->ifmt_word)
511			break;
512	if (desc->ifmt_string == NULL)
513		errx(1, "unknown media mode 0x%x", type);
514
515	for (i = 0; ttos->modes[i].desc != NULL; i++) {
516		rval = lookup_media_word(ttos->modes[i].desc, val);
517		if (rval != -1)
518			return (rval);
519	}
520	return -1;
521}
522
523int
524get_media_options(int type, const char *val)
525{
526	struct ifmedia_description *desc;
527	struct ifmedia_type_to_subtype *ttos;
528	char *optlist, *optptr;
529	int option = 0, i, rval = 0;
530
531	/* We muck with the string, so copy it. */
532	optlist = strdup(val);
533	if (optlist == NULL)
534		err(1, "strdup");
535
536	/* Find the top-level interface type. */
537	for (desc = ifm_type_descriptions, ttos = ifmedia_types_to_subtypes;
538	    desc->ifmt_string != NULL; desc++, ttos++)
539		if (type == desc->ifmt_word)
540			break;
541	if (desc->ifmt_string == NULL)
542		errx(1, "unknown media type 0x%x", type);
543
544	/*
545	 * Look up the options in the user-provided comma-separated
546	 * list.
547	 */
548	optptr = optlist;
549	for (; (optptr = strtok(optptr, ",")) != NULL; optptr = NULL) {
550		for (i = 0; ttos->options[i].desc != NULL; i++) {
551			option = lookup_media_word(ttos->options[i].desc, optptr);
552			if (option != -1)
553				break;
554		}
555		if (option == 0)
556			errx(1, "unknown option: %s", optptr);
557		rval |= option;
558	}
559
560	free(optlist);
561	return (rval);
562}
563
564int
565lookup_media_word(struct ifmedia_description *desc, const char *val)
566{
567
568	for (; desc->ifmt_string != NULL; desc++)
569		if (strcasecmp(desc->ifmt_string, val) == 0)
570			return (desc->ifmt_word);
571
572	return (-1);
573}
574
575static struct ifmedia_description *get_toptype_desc(int ifmw)
576{
577	struct ifmedia_description *desc;
578
579	for (desc = ifm_type_descriptions; desc->ifmt_string != NULL; desc++)
580		if (IFM_TYPE(ifmw) == desc->ifmt_word)
581			break;
582
583	return desc;
584}
585
586static struct ifmedia_type_to_subtype *get_toptype_ttos(int ifmw)
587{
588	struct ifmedia_description *desc;
589	struct ifmedia_type_to_subtype *ttos;
590
591	for (desc = ifm_type_descriptions, ttos = ifmedia_types_to_subtypes;
592	    desc->ifmt_string != NULL; desc++, ttos++)
593		if (IFM_TYPE(ifmw) == desc->ifmt_word)
594			break;
595
596	return ttos;
597}
598
599static struct ifmedia_description *get_subtype_desc(int ifmw,
600    struct ifmedia_type_to_subtype *ttos)
601{
602	int i;
603	struct ifmedia_description *desc;
604
605	for (i = 0; ttos->subtypes[i].desc != NULL; i++) {
606		if (ttos->subtypes[i].alias)
607			continue;
608		for (desc = ttos->subtypes[i].desc;
609		    desc->ifmt_string != NULL; desc++) {
610			if (IFM_SUBTYPE(ifmw) == desc->ifmt_word)
611				return desc;
612		}
613	}
614
615	return NULL;
616}
617
618static struct ifmedia_description *get_mode_desc(int ifmw,
619    struct ifmedia_type_to_subtype *ttos)
620{
621	int i;
622	struct ifmedia_description *desc;
623
624	for (i = 0; ttos->modes[i].desc != NULL; i++) {
625		if (ttos->modes[i].alias)
626			continue;
627		for (desc = ttos->modes[i].desc;
628		    desc->ifmt_string != NULL; desc++) {
629			if (IFM_MODE(ifmw) == desc->ifmt_word)
630				return desc;
631		}
632	}
633
634	return NULL;
635}
636
637void
638print_media_word(int ifmw, int print_toptype)
639{
640	struct ifmedia_description *desc;
641	struct ifmedia_type_to_subtype *ttos;
642	int seen_option = 0, i;
643
644	/* Find the top-level interface type. */
645	desc = get_toptype_desc(ifmw);
646	ttos = get_toptype_ttos(ifmw);
647	if (desc->ifmt_string == NULL) {
648		printf("<unknown type>");
649		return;
650	} else if (print_toptype) {
651		printf("%s", desc->ifmt_string);
652	}
653
654	/*
655	 * Don't print the top-level type; it's not like we can
656	 * change it, or anything.
657	 */
658
659	/* Find subtype. */
660	desc = get_subtype_desc(ifmw, ttos);
661	if (desc == NULL) {
662		printf("<unknown subtype>");
663		return;
664	}
665
666	if (print_toptype)
667		putchar(' ');
668
669	printf("%s", desc->ifmt_string);
670
671	if (print_toptype) {
672		desc = get_mode_desc(ifmw, ttos);
673		if (desc != NULL && strcasecmp("autoselect", desc->ifmt_string))
674			printf(" mode %s", desc->ifmt_string);
675	}
676
677	/* Find options. */
678	for (i = 0; ttos->options[i].desc != NULL; i++) {
679		if (ttos->options[i].alias)
680			continue;
681		for (desc = ttos->options[i].desc;
682		    desc->ifmt_string != NULL; desc++) {
683			if (ifmw & desc->ifmt_word) {
684				if (seen_option == 0)
685					printf(" <");
686				printf("%s%s", seen_option++ ? "," : "",
687				    desc->ifmt_string);
688			}
689		}
690	}
691	printf("%s", seen_option ? ">" : "");
692
693	if (print_toptype && IFM_INST(ifmw) != 0)
694		printf(" instance %d", IFM_INST(ifmw));
695}
696
697void
698print_media_word_ifconfig(int ifmw)
699{
700	struct ifmedia_description *desc;
701	struct ifmedia_type_to_subtype *ttos;
702	int seen_option = 0, i;
703
704	/* Find the top-level interface type. */
705	desc = get_toptype_desc(ifmw);
706	ttos = get_toptype_ttos(ifmw);
707	if (desc->ifmt_string == NULL) {
708		printf("<unknown type>");
709		return;
710	}
711
712	/*
713	 * Don't print the top-level type; it's not like we can
714	 * change it, or anything.
715	 */
716
717	/* Find subtype. */
718	desc = get_subtype_desc(ifmw, ttos);
719	if (desc == NULL) {
720		printf("<unknown subtype>");
721		return;
722	}
723
724	printf("media %s", desc->ifmt_string);
725
726	desc = get_mode_desc(ifmw, ttos);
727	if (desc != NULL)
728		printf(" mode %s", desc->ifmt_string);
729
730	/* Find options. */
731	for (i = 0; ttos->options[i].desc != NULL; i++) {
732		if (ttos->options[i].alias)
733			continue;
734		for (desc = ttos->options[i].desc;
735		    desc->ifmt_string != NULL; desc++) {
736			if (ifmw & desc->ifmt_word) {
737				if (seen_option == 0)
738					printf(" mediaopt ");
739				printf("%s%s", seen_option++ ? "," : "",
740				    desc->ifmt_string);
741			}
742		}
743	}
744
745	if (IFM_INST(ifmw) != 0)
746		printf(" instance %d", IFM_INST(ifmw));
747}
748
749/**********************************************************************
750 * ...until here.
751 **********************************************************************/
752