xref: /freebsd/sys/net/if_media.c (revision 3c18a0cac95362859d10d082150cbb65a2eda77b)
1f94bb788SPeter Wemm /*	$NetBSD: if_media.c,v 1.1 1997/03/17 02:55:15 thorpej Exp $	*/
2c3aac50fSPeter Wemm /* $FreeBSD$ */
3f94bb788SPeter Wemm 
4f94bb788SPeter Wemm /*
5f94bb788SPeter Wemm  * Copyright (c) 1997
6f94bb788SPeter Wemm  *	Jonathan Stone and Jason R. Thorpe.  All rights reserved.
7f94bb788SPeter Wemm  *
8f94bb788SPeter Wemm  * This software is derived from information provided by Matt Thomas.
9f94bb788SPeter Wemm  *
10f94bb788SPeter Wemm  * Redistribution and use in source and binary forms, with or without
11f94bb788SPeter Wemm  * modification, are permitted provided that the following conditions
12f94bb788SPeter Wemm  * are met:
13f94bb788SPeter Wemm  * 1. Redistributions of source code must retain the above copyright
14f94bb788SPeter Wemm  *    notice, this list of conditions and the following disclaimer.
15f94bb788SPeter Wemm  * 2. Redistributions in binary form must reproduce the above copyright
16f94bb788SPeter Wemm  *    notice, this list of conditions and the following disclaimer in the
17f94bb788SPeter Wemm  *    documentation and/or other materials provided with the distribution.
18f94bb788SPeter Wemm  * 3. All advertising materials mentioning features or use of this software
19f94bb788SPeter Wemm  *    must display the following acknowledgement:
20f94bb788SPeter Wemm  *      This product includes software developed by Jonathan Stone
21f94bb788SPeter Wemm  *	and Jason R. Thorpe for the NetBSD Project.
22f94bb788SPeter Wemm  * 4. The names of the authors may not be used to endorse or promote products
23f94bb788SPeter Wemm  *    derived from this software without specific prior written permission.
24f94bb788SPeter Wemm  *
25f94bb788SPeter Wemm  * THIS SOFTWARE IS PROVIDED BY THE AUTHORS ``AS IS'' AND ANY EXPRESS OR
26f94bb788SPeter Wemm  * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
27f94bb788SPeter Wemm  * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
28f94bb788SPeter Wemm  * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
29f94bb788SPeter Wemm  * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING,
30f94bb788SPeter Wemm  * BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
31f94bb788SPeter Wemm  * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED
32f94bb788SPeter Wemm  * AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
33f94bb788SPeter Wemm  * OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
34f94bb788SPeter Wemm  * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
35f94bb788SPeter Wemm  * SUCH DAMAGE.
36f94bb788SPeter Wemm  */
37f94bb788SPeter Wemm 
38f94bb788SPeter Wemm /*
39f94bb788SPeter Wemm  * BSD/OS-compatible network interface media selection.
40f94bb788SPeter Wemm  *
41f94bb788SPeter Wemm  * Where it is safe to do so, this code strays slightly from the BSD/OS
42f94bb788SPeter Wemm  * design.  Software which uses the API (device drivers, basically)
43f94bb788SPeter Wemm  * shouldn't notice any difference.
44f94bb788SPeter Wemm  *
45f94bb788SPeter Wemm  * Many thanks to Matt Thomas for providing the information necessary
46f94bb788SPeter Wemm  * to implement this interface.
47f94bb788SPeter Wemm  */
48f94bb788SPeter Wemm 
49f94bb788SPeter Wemm #include <sys/param.h>
50f94bb788SPeter Wemm #include <sys/systm.h>
51f94bb788SPeter Wemm #include <sys/socket.h>
52dca8fa3bSPeter Wemm #include <sys/sockio.h>
53f94bb788SPeter Wemm #include <sys/malloc.h>
54f94bb788SPeter Wemm 
55f94bb788SPeter Wemm #include <net/if.h>
56f94bb788SPeter Wemm #include <net/if_media.h>
57f94bb788SPeter Wemm 
58f94bb788SPeter Wemm /*
59f94bb788SPeter Wemm  * Compile-time options:
60f94bb788SPeter Wemm  * IFMEDIA_DEBUG:
61f94bb788SPeter Wemm  *	turn on implementation-level debug printfs.
62f94bb788SPeter Wemm  * 	Useful for debugging newly-ported  drivers.
63f94bb788SPeter Wemm  */
64f94bb788SPeter Wemm 
65303b270bSEivind Eklund static struct ifmedia_entry *ifmedia_match __P((struct ifmedia *ifm,
66f94bb788SPeter Wemm     int flags, int mask));
67f94bb788SPeter Wemm 
68f94bb788SPeter Wemm #ifdef IFMEDIA_DEBUG
69f94bb788SPeter Wemm int	ifmedia_debug = 0;
70f94bb788SPeter Wemm static	void ifmedia_printword __P((int));
71f94bb788SPeter Wemm #endif
72f94bb788SPeter Wemm 
73f94bb788SPeter Wemm /*
74f94bb788SPeter Wemm  * Initialize if_media struct for a specific interface instance.
75f94bb788SPeter Wemm  */
76f94bb788SPeter Wemm void
77f94bb788SPeter Wemm ifmedia_init(ifm, dontcare_mask, change_callback, status_callback)
78f94bb788SPeter Wemm 	struct ifmedia *ifm;
79f94bb788SPeter Wemm 	int dontcare_mask;
80f94bb788SPeter Wemm 	ifm_change_cb_t change_callback;
81f94bb788SPeter Wemm 	ifm_stat_cb_t status_callback;
82f94bb788SPeter Wemm {
83f94bb788SPeter Wemm 
84f94bb788SPeter Wemm 	LIST_INIT(&ifm->ifm_list);
85f94bb788SPeter Wemm 	ifm->ifm_cur = NULL;
86f94bb788SPeter Wemm 	ifm->ifm_media = 0;
87f94bb788SPeter Wemm 	ifm->ifm_mask = dontcare_mask;		/* IF don't-care bits */
88f94bb788SPeter Wemm 	ifm->ifm_change = change_callback;
89f94bb788SPeter Wemm 	ifm->ifm_status = status_callback;
90f94bb788SPeter Wemm }
91f94bb788SPeter Wemm 
926182fdbdSPeter Wemm void
936182fdbdSPeter Wemm ifmedia_removeall(ifm)
946182fdbdSPeter Wemm 	struct ifmedia *ifm;
956182fdbdSPeter Wemm {
966182fdbdSPeter Wemm 	struct ifmedia_entry *entry;
976182fdbdSPeter Wemm 
986182fdbdSPeter Wemm 	for (entry = LIST_FIRST(&ifm->ifm_list); entry;
996182fdbdSPeter Wemm 	     entry = LIST_FIRST(&ifm->ifm_list)) {
1006182fdbdSPeter Wemm 		LIST_REMOVE(entry, ifm_list);
1016182fdbdSPeter Wemm 		free(entry, M_IFADDR);
1026182fdbdSPeter Wemm 	}
1036182fdbdSPeter Wemm }
1046182fdbdSPeter Wemm 
105f94bb788SPeter Wemm /*
106f94bb788SPeter Wemm  * Add a media configuration to the list of supported media
107f94bb788SPeter Wemm  * for a specific interface instance.
108f94bb788SPeter Wemm  */
109f94bb788SPeter Wemm void
110f94bb788SPeter Wemm ifmedia_add(ifm, mword, data, aux)
111f94bb788SPeter Wemm 	struct ifmedia *ifm;
112f94bb788SPeter Wemm 	int mword;
113f94bb788SPeter Wemm 	int data;
114f94bb788SPeter Wemm 	void *aux;
115f94bb788SPeter Wemm {
116f94bb788SPeter Wemm 	register struct ifmedia_entry *entry;
117f94bb788SPeter Wemm 
118f94bb788SPeter Wemm #ifdef IFMEDIA_DEBUG
119f94bb788SPeter Wemm 	if (ifmedia_debug) {
120f94bb788SPeter Wemm 		if (ifm == NULL) {
121f94bb788SPeter Wemm 			printf("ifmedia_add: null ifm\n");
122f94bb788SPeter Wemm 			return;
123f94bb788SPeter Wemm 		}
124f94bb788SPeter Wemm 		printf("Adding entry for ");
125f94bb788SPeter Wemm 		ifmedia_printword(mword);
126f94bb788SPeter Wemm 	}
127f94bb788SPeter Wemm #endif
128f94bb788SPeter Wemm 
129f94bb788SPeter Wemm 	entry = malloc(sizeof(*entry), M_IFADDR, M_NOWAIT);
130f94bb788SPeter Wemm 	if (entry == NULL)
131f94bb788SPeter Wemm 		panic("ifmedia_add: can't malloc entry");
132f94bb788SPeter Wemm 
133f94bb788SPeter Wemm 	entry->ifm_media = mword;
134f94bb788SPeter Wemm 	entry->ifm_data = data;
135f94bb788SPeter Wemm 	entry->ifm_aux = aux;
136f94bb788SPeter Wemm 
137f94bb788SPeter Wemm 	LIST_INSERT_HEAD(&ifm->ifm_list, entry, ifm_list);
138f94bb788SPeter Wemm }
139f94bb788SPeter Wemm 
140f94bb788SPeter Wemm /*
141f94bb788SPeter Wemm  * Add an array of media configurations to the list of
142f94bb788SPeter Wemm  * supported media for a specific interface instance.
143f94bb788SPeter Wemm  */
144f94bb788SPeter Wemm void
145f94bb788SPeter Wemm ifmedia_list_add(ifm, lp, count)
146f94bb788SPeter Wemm 	struct ifmedia *ifm;
147f94bb788SPeter Wemm 	struct ifmedia_entry *lp;
148f94bb788SPeter Wemm 	int count;
149f94bb788SPeter Wemm {
150f94bb788SPeter Wemm 	int i;
151f94bb788SPeter Wemm 
152f94bb788SPeter Wemm 	for (i = 0; i < count; i++)
153f94bb788SPeter Wemm 		ifmedia_add(ifm, lp[i].ifm_media, lp[i].ifm_data,
154f94bb788SPeter Wemm 		    lp[i].ifm_aux);
155f94bb788SPeter Wemm }
156f94bb788SPeter Wemm 
157f94bb788SPeter Wemm /*
158f94bb788SPeter Wemm  * Set the default active media.
159f94bb788SPeter Wemm  *
160f94bb788SPeter Wemm  * Called by device-specific code which is assumed to have already
161f94bb788SPeter Wemm  * selected the default media in hardware.  We do _not_ call the
162f94bb788SPeter Wemm  * media-change callback.
163f94bb788SPeter Wemm  */
164f94bb788SPeter Wemm void
165f94bb788SPeter Wemm ifmedia_set(ifm, target)
166f94bb788SPeter Wemm 	struct ifmedia *ifm;
167f94bb788SPeter Wemm 	int target;
168f94bb788SPeter Wemm 
169f94bb788SPeter Wemm {
170f94bb788SPeter Wemm 	struct ifmedia_entry *match;
171f94bb788SPeter Wemm 
172f94bb788SPeter Wemm 	match = ifmedia_match(ifm, target, ifm->ifm_mask);
173f94bb788SPeter Wemm 
174f94bb788SPeter Wemm 	if (match == NULL) {
175f94bb788SPeter Wemm 		printf("ifmedia_set: no match for 0x%x/0x%x\n",
176f94bb788SPeter Wemm 		    target, ~ifm->ifm_mask);
177f94bb788SPeter Wemm 		panic("ifmedia_set");
178f94bb788SPeter Wemm 	}
179f94bb788SPeter Wemm 	ifm->ifm_cur = match;
180f94bb788SPeter Wemm 
181f94bb788SPeter Wemm #ifdef IFMEDIA_DEBUG
182f94bb788SPeter Wemm 	if (ifmedia_debug) {
183f94bb788SPeter Wemm 		printf("ifmedia_set: target ");
184f94bb788SPeter Wemm 		ifmedia_printword(target);
185f94bb788SPeter Wemm 		printf("ifmedia_set: setting to ");
186f94bb788SPeter Wemm 		ifmedia_printword(ifm->ifm_cur->ifm_media);
187f94bb788SPeter Wemm 	}
188f94bb788SPeter Wemm #endif
189f94bb788SPeter Wemm }
190f94bb788SPeter Wemm 
191f94bb788SPeter Wemm /*
192f94bb788SPeter Wemm  * Device-independent media ioctl support function.
193f94bb788SPeter Wemm  */
194f94bb788SPeter Wemm int
195f94bb788SPeter Wemm ifmedia_ioctl(ifp, ifr, ifm, cmd)
196f94bb788SPeter Wemm 	struct ifnet *ifp;
197f94bb788SPeter Wemm 	struct ifreq *ifr;
198f94bb788SPeter Wemm 	struct ifmedia *ifm;
199f94bb788SPeter Wemm 	u_long cmd;
200f94bb788SPeter Wemm {
201f94bb788SPeter Wemm 	struct ifmedia_entry *match;
202f94bb788SPeter Wemm 	struct ifmediareq *ifmr = (struct ifmediareq *) ifr;
203f94bb788SPeter Wemm 	int error = 0, sticky;
204f94bb788SPeter Wemm 
205f94bb788SPeter Wemm 	if (ifp == NULL || ifr == NULL || ifm == NULL)
206f94bb788SPeter Wemm 		return(EINVAL);
207f94bb788SPeter Wemm 
208f94bb788SPeter Wemm 	switch (cmd) {
209f94bb788SPeter Wemm 
210f94bb788SPeter Wemm 	/*
211f94bb788SPeter Wemm 	 * Set the current media.
212f94bb788SPeter Wemm 	 */
213f94bb788SPeter Wemm 	case  SIOCSIFMEDIA:
214f94bb788SPeter Wemm 	{
215f94bb788SPeter Wemm 		struct ifmedia_entry *oldentry;
216f94bb788SPeter Wemm 		int oldmedia;
217f94bb788SPeter Wemm 		int newmedia = ifr->ifr_media;
218f94bb788SPeter Wemm 
219f94bb788SPeter Wemm 		match = ifmedia_match(ifm, newmedia, ifm->ifm_mask);
220f94bb788SPeter Wemm 		if (match == NULL) {
221f94bb788SPeter Wemm #ifdef IFMEDIA_DEBUG
222f94bb788SPeter Wemm 			if (ifmedia_debug) {
223f94bb788SPeter Wemm 				printf(
224f94bb788SPeter Wemm 				    "ifmedia_ioctl: no media found for 0x%x\n",
225f94bb788SPeter Wemm 				    newmedia);
226f94bb788SPeter Wemm 			}
227f94bb788SPeter Wemm #endif
228f94bb788SPeter Wemm 			return (ENXIO);
229f94bb788SPeter Wemm 		}
230f94bb788SPeter Wemm 
231f94bb788SPeter Wemm 		/*
232f94bb788SPeter Wemm 		 * If no change, we're done.
233f94bb788SPeter Wemm 		 * XXX Automedia may invole software intervention.
234f94bb788SPeter Wemm 		 *     Keep going in case the the connected media changed.
235f94bb788SPeter Wemm 		 *     Similarly, if best match changed (kernel debugger?).
236f94bb788SPeter Wemm 		 */
237f94bb788SPeter Wemm 		if ((IFM_SUBTYPE(newmedia) != IFM_AUTO) &&
238f94bb788SPeter Wemm 		    (newmedia == ifm->ifm_media) &&
239f94bb788SPeter Wemm 		    (match == ifm->ifm_cur))
240f94bb788SPeter Wemm 			return 0;
241f94bb788SPeter Wemm 
242f94bb788SPeter Wemm 		/*
243f94bb788SPeter Wemm 		 * We found a match, now make the driver switch to it.
244f94bb788SPeter Wemm 		 * Make sure to preserve our old media type in case the
245f94bb788SPeter Wemm 		 * driver can't switch.
246f94bb788SPeter Wemm 		 */
247f94bb788SPeter Wemm #ifdef IFMEDIA_DEBUG
248f94bb788SPeter Wemm 		if (ifmedia_debug) {
2492bb0e330SPeter Wemm 			printf("ifmedia_ioctl: switching %s%d to ",
2502bb0e330SPeter Wemm 			    ifp->if_name, ifp->if_unit);
251f94bb788SPeter Wemm 			ifmedia_printword(match->ifm_media);
252f94bb788SPeter Wemm 		}
253f94bb788SPeter Wemm #endif
254f94bb788SPeter Wemm 		oldentry = ifm->ifm_cur;
255f94bb788SPeter Wemm 		oldmedia = ifm->ifm_media;
256f94bb788SPeter Wemm 		ifm->ifm_cur = match;
257f94bb788SPeter Wemm 		ifm->ifm_media = newmedia;
258f94bb788SPeter Wemm 		error = (*ifm->ifm_change)(ifp);
259f94bb788SPeter Wemm 		if (error) {
260f94bb788SPeter Wemm 			ifm->ifm_cur = oldentry;
261f94bb788SPeter Wemm 			ifm->ifm_media = oldmedia;
262f94bb788SPeter Wemm 		}
263f94bb788SPeter Wemm 		break;
264f94bb788SPeter Wemm 	}
265f94bb788SPeter Wemm 
266f94bb788SPeter Wemm 	/*
267f94bb788SPeter Wemm 	 * Get list of available media and current media on interface.
268f94bb788SPeter Wemm 	 */
269f94bb788SPeter Wemm 	case  SIOCGIFMEDIA:
270f94bb788SPeter Wemm 	{
271f94bb788SPeter Wemm 		struct ifmedia_entry *ep;
272f94bb788SPeter Wemm 		int *kptr, count;
2733c18a0caSAlfred Perlstein 		int usermax;	/* user requested max */
274f94bb788SPeter Wemm 
275f94bb788SPeter Wemm 		kptr = NULL;		/* XXX gcc */
276f94bb788SPeter Wemm 
277f94bb788SPeter Wemm 		ifmr->ifm_active = ifmr->ifm_current = ifm->ifm_cur ?
278f94bb788SPeter Wemm 		    ifm->ifm_cur->ifm_media : IFM_NONE;
279f94bb788SPeter Wemm 		ifmr->ifm_mask = ifm->ifm_mask;
280f94bb788SPeter Wemm 		ifmr->ifm_status = 0;
281f94bb788SPeter Wemm 		(*ifm->ifm_status)(ifp, ifmr);
282f94bb788SPeter Wemm 
283f94bb788SPeter Wemm 		count = 0;
2843c18a0caSAlfred Perlstein 		usermax = 0;
2853c18a0caSAlfred Perlstein 
2863c18a0caSAlfred Perlstein 		/*
2873c18a0caSAlfred Perlstein 		 * If there are more interfaces on the list, count
2883c18a0caSAlfred Perlstein 		 * them.  This allows the caller to set ifmr->ifm_count
2893c18a0caSAlfred Perlstein 		 * to 0 on the first call to know how much space to
2903c18a0caSAlfred Perlstein 		 * callocate.
2913c18a0caSAlfred Perlstein 		 */
2923c18a0caSAlfred Perlstein 		LIST_FOREACH(ep, &ifm->ifm_list, ifm_list)
2933c18a0caSAlfred Perlstein 			usermax++;
2943c18a0caSAlfred Perlstein 
2953c18a0caSAlfred Perlstein 		/*
2963c18a0caSAlfred Perlstein 		 * Don't allow the user to ask for too many
2973c18a0caSAlfred Perlstein 		 */
2983c18a0caSAlfred Perlstein 		if (ifmr->ifm_count > usermax)
2993c18a0caSAlfred Perlstein 			ifmr->ifm_count = usermax;
300f94bb788SPeter Wemm 
301f94bb788SPeter Wemm 		if (ifmr->ifm_count != 0) {
302f94bb788SPeter Wemm 			kptr = (int *)malloc(ifmr->ifm_count * sizeof(int),
303f94bb788SPeter Wemm 			    M_TEMP, M_WAITOK);
304f94bb788SPeter Wemm 
305f94bb788SPeter Wemm 			/*
306f94bb788SPeter Wemm 			 * Get the media words from the interface's list.
307f94bb788SPeter Wemm 			 */
3083c18a0caSAlfred Perlstein 			ep = LIST_FIRST(&ifm->ifm_list);
309f94bb788SPeter Wemm 			for (; ep != NULL && count < ifmr->ifm_count;
31022f29826SPoul-Henning Kamp 			    ep = LIST_NEXT(ep, ifm_list), count++)
311f94bb788SPeter Wemm 				kptr[count] = ep->ifm_media;
312f94bb788SPeter Wemm 
313f94bb788SPeter Wemm 			if (ep != NULL)
314f94bb788SPeter Wemm 				error = E2BIG;	/* oops! */
3153c18a0caSAlfred Perlstein 		} else {
3163c18a0caSAlfred Perlstein 			count = usermax;
317f94bb788SPeter Wemm 		}
318f94bb788SPeter Wemm 
319f94bb788SPeter Wemm 		/*
320f94bb788SPeter Wemm 		 * We do the copyout on E2BIG, because that's
321f94bb788SPeter Wemm 		 * just our way of telling userland that there
322f94bb788SPeter Wemm 		 * are more.  This is the behavior I've observed
323f94bb788SPeter Wemm 		 * under BSD/OS 3.0
324f94bb788SPeter Wemm 		 */
325f94bb788SPeter Wemm 		sticky = error;
326f94bb788SPeter Wemm 		if ((error == 0 || error == E2BIG) && ifmr->ifm_count != 0) {
327f94bb788SPeter Wemm 			error = copyout((caddr_t)kptr,
328f94bb788SPeter Wemm 			    (caddr_t)ifmr->ifm_ulist,
329f94bb788SPeter Wemm 			    ifmr->ifm_count * sizeof(int));
330f94bb788SPeter Wemm 		}
331f94bb788SPeter Wemm 
332f94bb788SPeter Wemm 		if (error == 0)
333f94bb788SPeter Wemm 			error = sticky;
334f94bb788SPeter Wemm 
335f94bb788SPeter Wemm 		if (ifmr->ifm_count != 0)
336f94bb788SPeter Wemm 			free(kptr, M_TEMP);
337f94bb788SPeter Wemm 
338f94bb788SPeter Wemm 		ifmr->ifm_count = count;
339f94bb788SPeter Wemm 		break;
340f94bb788SPeter Wemm 	}
341f94bb788SPeter Wemm 
342f94bb788SPeter Wemm 	default:
343f94bb788SPeter Wemm 		return (EINVAL);
344f94bb788SPeter Wemm 	}
345f94bb788SPeter Wemm 
346f94bb788SPeter Wemm 	return (error);
347f94bb788SPeter Wemm }
348f94bb788SPeter Wemm 
349f94bb788SPeter Wemm /*
350f94bb788SPeter Wemm  * Find media entry matching a given ifm word.
351f94bb788SPeter Wemm  *
352f94bb788SPeter Wemm  */
353303b270bSEivind Eklund static struct ifmedia_entry *
354f94bb788SPeter Wemm ifmedia_match(ifm, target, mask)
355f94bb788SPeter Wemm 	struct ifmedia *ifm;
356f94bb788SPeter Wemm 	int target;
357f94bb788SPeter Wemm 	int mask;
358f94bb788SPeter Wemm {
359f94bb788SPeter Wemm 	struct ifmedia_entry *match, *next;
360f94bb788SPeter Wemm 
361f94bb788SPeter Wemm 	match = NULL;
362f94bb788SPeter Wemm 	mask = ~mask;
363f94bb788SPeter Wemm 
36437d40066SPoul-Henning Kamp 	LIST_FOREACH(next, &ifm->ifm_list, ifm_list) {
365f94bb788SPeter Wemm 		if ((next->ifm_media & mask) == (target & mask)) {
366f94bb788SPeter Wemm #if defined(IFMEDIA_DEBUG) || defined(DIAGNOSTIC)
367f94bb788SPeter Wemm 			if (match) {
368f94bb788SPeter Wemm 				printf("ifmedia_match: multiple match for "
369f94bb788SPeter Wemm 				    "0x%x/0x%x\n", target, mask);
370f94bb788SPeter Wemm 			}
371f94bb788SPeter Wemm #endif
372f94bb788SPeter Wemm 			match = next;
373f94bb788SPeter Wemm 		}
374f94bb788SPeter Wemm 	}
375f94bb788SPeter Wemm 
376f94bb788SPeter Wemm 	return match;
377f94bb788SPeter Wemm }
378f94bb788SPeter Wemm 
379f94bb788SPeter Wemm #ifdef IFMEDIA_DEBUG
380f94bb788SPeter Wemm struct ifmedia_description ifm_type_descriptions[] =
381f94bb788SPeter Wemm     IFM_TYPE_DESCRIPTIONS;
382f94bb788SPeter Wemm 
383f94bb788SPeter Wemm struct ifmedia_description ifm_subtype_ethernet_descriptions[] =
384f94bb788SPeter Wemm     IFM_SUBTYPE_ETHERNET_DESCRIPTIONS;
385f94bb788SPeter Wemm 
386f94bb788SPeter Wemm struct ifmedia_description ifm_subtype_ethernet_option_descriptions[] =
387f94bb788SPeter Wemm     IFM_SUBTYPE_ETHERNET_OPTION_DESCRIPTIONS;
388f94bb788SPeter Wemm 
389f94bb788SPeter Wemm struct ifmedia_description ifm_subtype_tokenring_descriptions[] =
390f94bb788SPeter Wemm     IFM_SUBTYPE_TOKENRING_DESCRIPTIONS;
391f94bb788SPeter Wemm 
392f94bb788SPeter Wemm struct ifmedia_description ifm_subtype_tokenring_option_descriptions[] =
393f94bb788SPeter Wemm     IFM_SUBTYPE_TOKENRING_OPTION_DESCRIPTIONS;
394f94bb788SPeter Wemm 
395f94bb788SPeter Wemm struct ifmedia_description ifm_subtype_fddi_descriptions[] =
396f94bb788SPeter Wemm     IFM_SUBTYPE_FDDI_DESCRIPTIONS;
397f94bb788SPeter Wemm 
398f94bb788SPeter Wemm struct ifmedia_description ifm_subtype_fddi_option_descriptions[] =
399f94bb788SPeter Wemm     IFM_SUBTYPE_FDDI_OPTION_DESCRIPTIONS;
400f94bb788SPeter Wemm 
401f94bb788SPeter Wemm struct ifmedia_description ifm_subtype_shared_descriptions[] =
402f94bb788SPeter Wemm     IFM_SUBTYPE_SHARED_DESCRIPTIONS;
403f94bb788SPeter Wemm 
404f94bb788SPeter Wemm struct ifmedia_description ifm_shared_option_descriptions[] =
405f94bb788SPeter Wemm     IFM_SHARED_OPTION_DESCRIPTIONS;
406f94bb788SPeter Wemm 
407f94bb788SPeter Wemm struct ifmedia_type_to_subtype {
408f94bb788SPeter Wemm 	struct ifmedia_description *subtypes;
409f94bb788SPeter Wemm 	struct ifmedia_description *options;
410f94bb788SPeter Wemm };
411f94bb788SPeter Wemm 
412f94bb788SPeter Wemm /* must be in the same order as IFM_TYPE_DESCRIPTIONS */
413f94bb788SPeter Wemm struct ifmedia_type_to_subtype ifmedia_types_to_subtypes[] = {
414f94bb788SPeter Wemm 	{
415f94bb788SPeter Wemm 	  &ifm_subtype_ethernet_descriptions[0],
416f94bb788SPeter Wemm 	  &ifm_subtype_ethernet_option_descriptions[0]
417f94bb788SPeter Wemm 	},
418f94bb788SPeter Wemm 	{
419f94bb788SPeter Wemm 	  &ifm_subtype_tokenring_descriptions[0],
420f94bb788SPeter Wemm 	  &ifm_subtype_tokenring_option_descriptions[0]
421f94bb788SPeter Wemm 	},
422f94bb788SPeter Wemm 	{
423f94bb788SPeter Wemm 	  &ifm_subtype_fddi_descriptions[0],
424f94bb788SPeter Wemm 	  &ifm_subtype_fddi_option_descriptions[0]
425f94bb788SPeter Wemm 	},
426f94bb788SPeter Wemm };
427f94bb788SPeter Wemm 
428f94bb788SPeter Wemm /*
429f94bb788SPeter Wemm  * print a media word.
430f94bb788SPeter Wemm  */
431f94bb788SPeter Wemm static void
432f94bb788SPeter Wemm ifmedia_printword(ifmw)
433f94bb788SPeter Wemm 	int ifmw;
434f94bb788SPeter Wemm {
435f94bb788SPeter Wemm 	struct ifmedia_description *desc;
436f94bb788SPeter Wemm 	struct ifmedia_type_to_subtype *ttos;
437f94bb788SPeter Wemm 	int seen_option = 0;
438f94bb788SPeter Wemm 
439f94bb788SPeter Wemm 	/* Find the top-level interface type. */
440f94bb788SPeter Wemm 	for (desc = ifm_type_descriptions, ttos = ifmedia_types_to_subtypes;
441f94bb788SPeter Wemm 	    desc->ifmt_string != NULL; desc++, ttos++)
442f94bb788SPeter Wemm 		if (IFM_TYPE(ifmw) == desc->ifmt_word)
443f94bb788SPeter Wemm 			break;
444f94bb788SPeter Wemm 	if (desc->ifmt_string == NULL) {
445f94bb788SPeter Wemm 		printf("<unknown type>\n");
446f94bb788SPeter Wemm 		return;
447f94bb788SPeter Wemm 	}
448f94bb788SPeter Wemm 	printf(desc->ifmt_string);
449f94bb788SPeter Wemm 
450f94bb788SPeter Wemm 	/*
451f94bb788SPeter Wemm 	 * Check for the shared subtype descriptions first, then the
452f94bb788SPeter Wemm 	 * type-specific ones.
453f94bb788SPeter Wemm 	 */
454f94bb788SPeter Wemm 	for (desc = ifm_subtype_shared_descriptions;
455f94bb788SPeter Wemm 	    desc->ifmt_string != NULL; desc++)
456f94bb788SPeter Wemm 		if (IFM_SUBTYPE(ifmw) == desc->ifmt_word)
457f94bb788SPeter Wemm 			goto got_subtype;
458f94bb788SPeter Wemm 
459f94bb788SPeter Wemm 	for (desc = ttos->subtypes; desc->ifmt_string != NULL; desc++)
460f94bb788SPeter Wemm 		if (IFM_SUBTYPE(ifmw) == desc->ifmt_word)
461f94bb788SPeter Wemm 			break;
462f94bb788SPeter Wemm 	if (desc->ifmt_string == NULL) {
463f94bb788SPeter Wemm 		printf(" <unknown subtype>\n");
464f94bb788SPeter Wemm 		return;
465f94bb788SPeter Wemm 	}
466f94bb788SPeter Wemm 
467f94bb788SPeter Wemm  got_subtype:
468f94bb788SPeter Wemm 	printf(" %s", desc->ifmt_string);
469f94bb788SPeter Wemm 
470f94bb788SPeter Wemm 	/*
471f94bb788SPeter Wemm 	 * Look for shared options.
472f94bb788SPeter Wemm 	 */
473f94bb788SPeter Wemm 	for (desc = ifm_shared_option_descriptions;
474f94bb788SPeter Wemm 	    desc->ifmt_string != NULL; desc++) {
475f94bb788SPeter Wemm 		if (ifmw & desc->ifmt_word) {
476f94bb788SPeter Wemm 			if (seen_option == 0)
477f94bb788SPeter Wemm 				printf(" <");
478f94bb788SPeter Wemm 			printf("%s%s", seen_option++ ? "," : "",
479f94bb788SPeter Wemm 			    desc->ifmt_string);
480f94bb788SPeter Wemm 		}
481f94bb788SPeter Wemm 	}
482f94bb788SPeter Wemm 
483f94bb788SPeter Wemm 	/*
484f94bb788SPeter Wemm 	 * Look for subtype-specific options.
485f94bb788SPeter Wemm 	 */
486f94bb788SPeter Wemm 	for (desc = ttos->options; desc->ifmt_string != NULL; desc++) {
487f94bb788SPeter Wemm 		if (ifmw & desc->ifmt_word) {
488f94bb788SPeter Wemm 			if (seen_option == 0)
489f94bb788SPeter Wemm 				printf(" <");
490f94bb788SPeter Wemm 			printf("%s%s", seen_option++ ? "," : "",
491f94bb788SPeter Wemm 			    desc->ifmt_string);
492f94bb788SPeter Wemm 		}
493f94bb788SPeter Wemm 	}
494f94bb788SPeter Wemm 	printf("%s\n", seen_option ? ">" : "");
495f94bb788SPeter Wemm }
496f94bb788SPeter Wemm #endif /* IFMEDIA_DEBUG */
497