diff options
Diffstat (limited to 'sys/net/if_media.c')
| -rw-r--r-- | sys/net/if_media.c | 475 |
1 files changed, 0 insertions, 475 deletions
diff --git a/sys/net/if_media.c b/sys/net/if_media.c deleted file mode 100644 index 1dcf18fd05562..0000000000000 --- a/sys/net/if_media.c +++ /dev/null @@ -1,475 +0,0 @@ -/* $NetBSD: if_media.c,v 1.1 1997/03/17 02:55:15 thorpej 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/errno.h> -#include <sys/ioctl.h> -#include <sys/socket.h> -#include <sys/malloc.h> - -#include <net/if.h> -#include <net/if_media.h> -#include <net/netisr.h> - -/* - * Compile-time options: - * IFMEDIA_DEBUG: - * turn on implementation-level debug printfs. - * Useful for debugging newly-ported drivers. - */ - -struct ifmedia_entry *ifmedia_match __P((struct ifmedia *ifm, - int flags, int mask)); - -#ifdef IFMEDIA_DEBUG -int ifmedia_debug = 0; -static void ifmedia_printword __P((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; -} - -/* - * 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(ifp, ifr, ifm, cmd) - 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; - - 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; - ep = ifm->ifm_list.lh_first; - - if (ifmr->ifm_count != 0) { - kptr = (int *)malloc(ifmr->ifm_count * sizeof(int), - M_TEMP, M_WAITOK); - - /* - * Get the media words from the interface's list. - */ - for (; ep != NULL && count < ifmr->ifm_count; - ep = ep->ifm_list.le_next, count++) - kptr[count] = ep->ifm_media; - - if (ep != NULL) - error = E2BIG; /* oops! */ - } - - /* - * 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 - * callocate. - */ - for (; ep != NULL; ep = ep->ifm_list.le_next) - count++; - - /* - * 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, - (caddr_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. - * - */ -struct ifmedia_entry * -ifmedia_match(ifm, target, mask) - struct ifmedia *ifm; - int target; - int mask; -{ - struct ifmedia_entry *match, *next; - - match = NULL; - mask = ~mask; - - for (next = ifm->ifm_list.lh_first; next != NULL; - next = next->ifm_list.le_next) { - 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_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] - }, -}; - -/* - * 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 */ |