+++ /dev/null
-/*
- * Copyright (c) 2000 Apple Computer, Inc. All rights reserved.
- *
- * @APPLE_OSREFERENCE_LICENSE_HEADER_START@
- *
- * This file contains Original Code and/or Modifications of Original Code
- * as defined in and that are subject to the Apple Public Source License
- * Version 2.0 (the 'License'). You may not use this file except in
- * compliance with the License. The rights granted to you under the License
- * may not be used to create, or enable the creation or redistribution of,
- * unlawful or unlicensed copies of an Apple operating system, or to
- * circumvent, violate, or enable the circumvention or violation of, any
- * terms of an Apple operating system software license agreement.
- *
- * Please obtain a copy of the License at
- * http://www.opensource.apple.com/apsl/ and read it before using this file.
- *
- * The Original Code and all software distributed under the License are
- * distributed on an 'AS IS' basis, WITHOUT WARRANTY OF ANY KIND, EITHER
- * EXPRESS OR IMPLIED, AND APPLE HEREBY DISCLAIMS ALL SUCH WARRANTIES,
- * INCLUDING WITHOUT LIMITATION, ANY WARRANTIES OF MERCHANTABILITY,
- * FITNESS FOR A PARTICULAR PURPOSE, QUIET ENJOYMENT OR NON-INFRINGEMENT.
- * Please see the License for the specific language governing rights and
- * limitations under the License.
- *
- * @APPLE_OSREFERENCE_LICENSE_HEADER_END@
- */
-/* $NetBSD: if_media.c,v 1.1 1997/03/17 02:55:15 thorpej Exp $ */
-/* $FreeBSD: src/sys/net/if_media.c,v 1.9.2.4 2001/07/04 00:12:38 brooks Exp $ */
-
-/*
- * Copyright (c) 1997
- * Jonathan Stone and Jason R. Thorpe. All rights reserved.
- *
- * This software is derived from information provided by Matt Thomas.
- *
- * Redistribution and use in source and binary forms, with or without
- * modification, are permitted provided that the following conditions
- * are met:
- * 1. Redistributions of source code must retain the above copyright
- * notice, this list of conditions and the following disclaimer.
- * 2. Redistributions in binary form must reproduce the above copyright
- * notice, this list of conditions and the following disclaimer in the
- * documentation and/or other materials provided with the distribution.
- * 3. All advertising materials mentioning features or use of this software
- * must display the following acknowledgement:
- * This product includes software developed by Jonathan Stone
- * and Jason R. Thorpe for the NetBSD Project.
- * 4. The names of the authors may not be used to endorse or promote products
- * derived from this software without specific prior written permission.
- *
- * THIS SOFTWARE IS PROVIDED BY THE AUTHORS ``AS IS'' AND ANY EXPRESS OR
- * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
- * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
- * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
- * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING,
- * BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
- * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED
- * AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
- * OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
- * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
- * SUCH DAMAGE.
- */
-
-/*
- * BSD/OS-compatible network interface media selection.
- *
- * Where it is safe to do so, this code strays slightly from the BSD/OS
- * design. Software which uses the API (device drivers, basically)
- * shouldn't notice any difference.
- *
- * Many thanks to Matt Thomas for providing the information necessary
- * to implement this interface.
- */
-
-#include <sys/param.h>
-#include <sys/systm.h>
-#include <sys/socket.h>
-#include <sys/sockio.h>
-#include <sys/malloc.h>
-
-#include <net/if.h>
-#include <net/if_media.h>
-
-/*
- * Compile-time options:
- * IFMEDIA_DEBUG:
- * turn on implementation-level debug printfs.
- * Useful for debugging newly-ported drivers.
- */
-
-static struct ifmedia_entry *ifmedia_match(struct ifmedia *ifm,
- int flags, int mask);
-
-#ifdef IFMEDIA_DEBUG
-int ifmedia_debug = 0;
-static void ifmedia_printword(int);
-#endif
-
-/*
- * Initialize if_media struct for a specific interface instance.
- */
-void
-ifmedia_init(ifm, dontcare_mask, change_callback, status_callback)
- struct ifmedia *ifm;
- int dontcare_mask;
- ifm_change_cb_t change_callback;
- ifm_stat_cb_t status_callback;
-{
-
- LIST_INIT(&ifm->ifm_list);
- ifm->ifm_cur = NULL;
- ifm->ifm_media = 0;
- ifm->ifm_mask = dontcare_mask; /* IF don't-care bits */
- ifm->ifm_change = change_callback;
- ifm->ifm_status = status_callback;
-}
-
-void
-ifmedia_removeall(ifm)
- struct ifmedia *ifm;
-{
- struct ifmedia_entry *entry;
-
- for (entry = LIST_FIRST(&ifm->ifm_list); entry;
- entry = LIST_FIRST(&ifm->ifm_list)) {
- LIST_REMOVE(entry, ifm_list);
- FREE(entry, M_IFADDR);
- }
-}
-
-/*
- * Add a media configuration to the list of supported media
- * for a specific interface instance.
- */
-void
-ifmedia_add(ifm, mword, data, aux)
- struct ifmedia *ifm;
- int mword;
- int data;
- void *aux;
-{
- register struct ifmedia_entry *entry;
-
-#ifdef IFMEDIA_DEBUG
- if (ifmedia_debug) {
- if (ifm == NULL) {
- printf("ifmedia_add: null ifm\n");
- return;
- }
- printf("Adding entry for ");
- ifmedia_printword(mword);
- }
-#endif
-
- entry = _MALLOC(sizeof(*entry), M_IFADDR, M_NOWAIT);
- if (entry == NULL)
- panic("ifmedia_add: can't malloc entry");
-
- entry->ifm_media = mword;
- entry->ifm_data = data;
- entry->ifm_aux = aux;
-
- LIST_INSERT_HEAD(&ifm->ifm_list, entry, ifm_list);
-}
-
-/*
- * Add an array of media configurations to the list of
- * supported media for a specific interface instance.
- */
-void
-ifmedia_list_add(ifm, lp, count)
- struct ifmedia *ifm;
- struct ifmedia_entry *lp;
- int count;
-{
- int i;
-
- for (i = 0; i < count; i++)
- ifmedia_add(ifm, lp[i].ifm_media, lp[i].ifm_data,
- lp[i].ifm_aux);
-}
-
-/*
- * Set the default active media.
- *
- * Called by device-specific code which is assumed to have already
- * selected the default media in hardware. We do _not_ call the
- * media-change callback.
- */
-void
-ifmedia_set(ifm, target)
- struct ifmedia *ifm;
- int target;
-
-{
- struct ifmedia_entry *match;
-
- match = ifmedia_match(ifm, target, ifm->ifm_mask);
-
- if (match == NULL) {
- printf("ifmedia_set: no match for 0x%x/0x%x\n",
- target, ~ifm->ifm_mask);
- panic("ifmedia_set");
- }
- ifm->ifm_cur = match;
-
-#ifdef IFMEDIA_DEBUG
- if (ifmedia_debug) {
- printf("ifmedia_set: target ");
- ifmedia_printword(target);
- printf("ifmedia_set: setting to ");
- ifmedia_printword(ifm->ifm_cur->ifm_media);
- }
-#endif
-}
-
-/*
- * Device-independent media ioctl support function.
- */
-int
-ifmedia_ioctl(
- struct ifnet *ifp,
- struct ifreq *ifr,
- struct ifmedia *ifm,
- u_long cmd)
-{
- struct ifmedia_entry *match;
- struct ifmediareq *ifmr = (struct ifmediareq *) ifr;
- int error = 0, sticky;
-
- if (ifp == NULL || ifr == NULL || ifm == NULL)
- return(EINVAL);
-
- switch (cmd) {
-
- /*
- * Set the current media.
- */
- case SIOCSIFMEDIA:
- {
- struct ifmedia_entry *oldentry;
- int oldmedia;
- int newmedia = ifr->ifr_media;
-
- match = ifmedia_match(ifm, newmedia, ifm->ifm_mask);
- if (match == NULL) {
-#ifdef IFMEDIA_DEBUG
- if (ifmedia_debug) {
- printf(
- "ifmedia_ioctl: no media found for 0x%x\n",
- newmedia);
- }
-#endif
- return (ENXIO);
- }
-
- /*
- * If no change, we're done.
- * XXX Automedia may invole software intervention.
- * Keep going in case the the connected media changed.
- * Similarly, if best match changed (kernel debugger?).
- */
- if ((IFM_SUBTYPE(newmedia) != IFM_AUTO) &&
- (newmedia == ifm->ifm_media) &&
- (match == ifm->ifm_cur))
- return 0;
-
- /*
- * We found a match, now make the driver switch to it.
- * Make sure to preserve our old media type in case the
- * driver can't switch.
- */
-#ifdef IFMEDIA_DEBUG
- if (ifmedia_debug) {
- printf("ifmedia_ioctl: switching %s to ",
- ifp->if_xname);
- ifmedia_printword(match->ifm_media);
- }
-#endif
- oldentry = ifm->ifm_cur;
- oldmedia = ifm->ifm_media;
- ifm->ifm_cur = match;
- ifm->ifm_media = newmedia;
- error = (*ifm->ifm_change)(ifp);
- if (error) {
- ifm->ifm_cur = oldentry;
- ifm->ifm_media = oldmedia;
- }
- break;
- }
-
- /*
- * Get list of available media and current media on interface.
- */
- case SIOCGIFMEDIA:
- {
- struct ifmedia_entry *ep;
- int *kptr, count;
- int usermax; /* user requested max */
-
- kptr = NULL; /* XXX gcc */
-
- ifmr->ifm_active = ifmr->ifm_current = ifm->ifm_cur ?
- ifm->ifm_cur->ifm_media : IFM_NONE;
- ifmr->ifm_mask = ifm->ifm_mask;
- ifmr->ifm_status = 0;
- (*ifm->ifm_status)(ifp, ifmr);
-
- count = 0;
- usermax = 0;
-
- /*
- * If there are more interfaces on the list, count
- * them. This allows the caller to set ifmr->ifm_count
- * to 0 on the first call to know how much space to
- * allocate.
- */
- LIST_FOREACH(ep, &ifm->ifm_list, ifm_list)
- usermax++;
-
- /*
- * Don't allow the user to ask for too many
- * or a negative number.
- */
- if (ifmr->ifm_count > usermax)
- ifmr->ifm_count = usermax;
- else if (ifmr->ifm_count < 0)
- return (EINVAL);
-
- if (ifmr->ifm_count != 0) {
- kptr = (int *) _MALLOC(ifmr->ifm_count * sizeof(int),
- M_TEMP, M_WAITOK);
- if (kptr == NULL)
- return ENOBUFS;
-
- /*
- * Get the media words from the interface's list.
- */
- ep = LIST_FIRST(&ifm->ifm_list);
- for (; ep != NULL && count < ifmr->ifm_count;
- ep = LIST_NEXT(ep, ifm_list), count++)
- kptr[count] = ep->ifm_media;
-
- if (ep != NULL)
- error = E2BIG; /* oops! */
- } else {
- count = usermax;
- }
-
- /*
- * We do the copyout on E2BIG, because that's
- * just our way of telling userland that there
- * are more. This is the behavior I've observed
- * under BSD/OS 3.0
- */
- sticky = error;
- if ((error == 0 || error == E2BIG) && ifmr->ifm_count != 0) {
- error = copyout((caddr_t)kptr,
- CAST_USER_ADDR_T(ifmr->ifm_ulist),
- ifmr->ifm_count * sizeof(int));
- }
-
- if (error == 0)
- error = sticky;
-
- if (ifmr->ifm_count != 0)
- FREE(kptr, M_TEMP);
-
- ifmr->ifm_count = count;
- break;
- }
-
- default:
- return (EINVAL);
- }
-
- return (error);
-}
-
-/*
- * Find media entry matching a given ifm word.
- *
- */
-static struct ifmedia_entry *
-ifmedia_match(ifm, target, mask)
- struct ifmedia *ifm;
- int target;
- int mask;
-{
- struct ifmedia_entry *match, *next;
-
- match = NULL;
- mask = ~mask;
-
- LIST_FOREACH(next, &ifm->ifm_list, ifm_list) {
- if ((next->ifm_media & mask) == (target & mask)) {
-#if defined(IFMEDIA_DEBUG) || defined(DIAGNOSTIC)
- if (match) {
- printf("ifmedia_match: multiple match for "
- "0x%x/0x%x\n", target, mask);
- }
-#endif
- match = next;
- }
- }
-
- return match;
-}
-
-#ifdef IFMEDIA_DEBUG
-struct ifmedia_description ifm_type_descriptions[] =
- IFM_TYPE_DESCRIPTIONS;
-
-struct ifmedia_description ifm_subtype_ethernet_descriptions[] =
- IFM_SUBTYPE_ETHERNET_DESCRIPTIONS;
-
-struct ifmedia_description ifm_subtype_ethernet_option_descriptions[] =
- IFM_SUBTYPE_ETHERNET_OPTION_DESCRIPTIONS;
-
-struct ifmedia_description ifm_subtype_tokenring_descriptions[] =
- IFM_SUBTYPE_TOKENRING_DESCRIPTIONS;
-
-struct ifmedia_description ifm_subtype_tokenring_option_descriptions[] =
- IFM_SUBTYPE_TOKENRING_OPTION_DESCRIPTIONS;
-
-struct ifmedia_description ifm_subtype_fddi_descriptions[] =
- IFM_SUBTYPE_FDDI_DESCRIPTIONS;
-
-struct ifmedia_description ifm_subtype_fddi_option_descriptions[] =
- IFM_SUBTYPE_FDDI_OPTION_DESCRIPTIONS;
-
-struct ifmedia_description ifm_subtype_80211_descriptions[] =
- IFM_SUBTYPE_IEEE80211_DESCRIPTIONS;
-
-struct ifmedia_description ifm_subtype_80211_option_descriptions[] =
- IFM_SUBTYPE_IEEE80211_OPTION_DESCRIPTIONS;
-
-struct ifmedia_description ifm_subtype_shared_descriptions[] =
- IFM_SUBTYPE_SHARED_DESCRIPTIONS;
-
-struct ifmedia_description ifm_shared_option_descriptions[] =
- IFM_SHARED_OPTION_DESCRIPTIONS;
-
-struct ifmedia_type_to_subtype {
- struct ifmedia_description *subtypes;
- struct ifmedia_description *options;
-};
-
-/* must be in the same order as IFM_TYPE_DESCRIPTIONS */
-struct ifmedia_type_to_subtype ifmedia_types_to_subtypes[] = {
- {
- &ifm_subtype_ethernet_descriptions[0],
- &ifm_subtype_ethernet_option_descriptions[0]
- },
- {
- &ifm_subtype_tokenring_descriptions[0],
- &ifm_subtype_tokenring_option_descriptions[0]
- },
- {
- &ifm_subtype_fddi_descriptions[0],
- &ifm_subtype_fddi_option_descriptions[0]
- },
- {
- &ifm_subtype_80211_descriptions[0],
- &ifm_subtype_80211_option_descriptions[0]
- },
-};
-
-/*
- * print a media word.
- */
-static void
-ifmedia_printword(ifmw)
- int ifmw;
-{
- struct ifmedia_description *desc;
- struct ifmedia_type_to_subtype *ttos;
- int seen_option = 0;
-
- /* Find the top-level interface type. */
- for (desc = ifm_type_descriptions, ttos = ifmedia_types_to_subtypes;
- desc->ifmt_string != NULL; desc++, ttos++)
- if (IFM_TYPE(ifmw) == desc->ifmt_word)
- break;
- if (desc->ifmt_string == NULL) {
- printf("<unknown type>\n");
- return;
- }
- printf(desc->ifmt_string);
-
- /*
- * Check for the shared subtype descriptions first, then the
- * type-specific ones.
- */
- for (desc = ifm_subtype_shared_descriptions;
- desc->ifmt_string != NULL; desc++)
- if (IFM_SUBTYPE(ifmw) == desc->ifmt_word)
- goto got_subtype;
-
- for (desc = ttos->subtypes; desc->ifmt_string != NULL; desc++)
- if (IFM_SUBTYPE(ifmw) == desc->ifmt_word)
- break;
- if (desc->ifmt_string == NULL) {
- printf(" <unknown subtype>\n");
- return;
- }
-
- got_subtype:
- printf(" %s", desc->ifmt_string);
-
- /*
- * Look for shared options.
- */
- for (desc = ifm_shared_option_descriptions;
- desc->ifmt_string != NULL; desc++) {
- if (ifmw & desc->ifmt_word) {
- if (seen_option == 0)
- printf(" <");
- printf("%s%s", seen_option++ ? "," : "",
- desc->ifmt_string);
- }
- }
-
- /*
- * Look for subtype-specific options.
- */
- for (desc = ttos->options; desc->ifmt_string != NULL; desc++) {
- if (ifmw & desc->ifmt_word) {
- if (seen_option == 0)
- printf(" <");
- printf("%s%s", seen_option++ ? "," : "",
- desc->ifmt_string);
- }
- }
- printf("%s\n", seen_option ? ">" : "");
-}
-#endif /* IFMEDIA_DEBUG */
projects / apple / xnu.git / blobdiff