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freebsd-src/sbin/ifconfig/ifmedia.c
Doug Ambrisko 499e862cae Change the ifr_media operation to only get its value and only set 
its value once per ifconfig run.  Use Sam's new callback
operation to set it when everything is done.

The purpose for this is that if you did something like
	ifconfig bge0 media 100baseTX mediaopt full-duplex
multiple times it would end up causing the PHY to re-sync
since it would send the IOCTLs:
	ifconfig bge0 media 100baseTX -mediaopt full-duplex
	ifconfig bge0 media 100baseTX mediaopt full-duplex
This would cause the PHY to be updated twice even though
there really wasn't any change since the check in
sys/net/if_media.c would always fail.

Caveat is that this doesn't fix the case of:
	ifconfig bge0 media autoselect
etc. since in sys/net/if_media.c it forces an autoselect to go through
the entire process in ifmedia_ioctl :-( :
          /*
           * 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;

Briefly looked at by:	sam
2005-01-27 16:40:12 +00:00

806 lines
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/* $NetBSD: ifconfig.c,v 1.34 1997/04/21 01:17:58 lukem Exp $ */
/* $FreeBSD$ */
/*
* Copyright (c) 1997 Jason R. Thorpe.
* All rights reserved.
*
* 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 for the NetBSD Project
* by Jason R. Thorpe.
* 4. The name of the author may not be used to endorse or promote products
* derived from this software without specific prior written permission.
*
* THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``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.
*/
/*
* Copyright (c) 1983, 1993
* The Regents of the University of California. All rights reserved.
*
* 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 the University of
* California, Berkeley and its contributors.
* 4. Neither the name of the University nor the names of its contributors
* may be used to endorse or promote products derived from this software
* without specific prior written permission.
*
* THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``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 REGENTS OR CONTRIBUTORS 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.
*/
#include <sys/param.h>
#include <sys/ioctl.h>
#include <sys/socket.h>
#include <sys/sysctl.h>
#include <sys/time.h>
#include <net/if.h>
#include <net/if_dl.h>
#include <net/if_types.h>
#include <net/if_media.h>
#include <net/route.h>
#include <ctype.h>
#include <err.h>
#include <errno.h>
#include <fcntl.h>
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include <unistd.h>
#include "ifconfig.h"
static void domediaopt(const char *, int, int);
static int get_media_subtype(int, const char *);
static int get_media_mode(int, const char *);
static int get_media_options(int, const char *);
static int lookup_media_word(struct ifmedia_description *, const char *);
static void print_media_word(int, int);
static void print_media_word_ifconfig(int);
static struct ifmedia_description *get_toptype_desc(int);
static struct ifmedia_type_to_subtype *get_toptype_ttos(int);
static struct ifmedia_description *get_subtype_desc(int,
struct ifmedia_type_to_subtype *ttos);
static void
media_status(int s)
{
struct ifmediareq ifmr;
int *media_list, i;
(void) memset(&ifmr, 0, sizeof(ifmr));
(void) strncpy(ifmr.ifm_name, name, sizeof(ifmr.ifm_name));
if (ioctl(s, SIOCGIFMEDIA, (caddr_t)&ifmr) < 0) {
/*
* Interface doesn't support SIOC{G,S}IFMEDIA.
*/
return;
}
if (ifmr.ifm_count == 0) {
warnx("%s: no media types?", name);
return;
}
media_list = (int *)malloc(ifmr.ifm_count * sizeof(int));
if (media_list == NULL)
err(1, "malloc");
ifmr.ifm_ulist = media_list;
if (ioctl(s, SIOCGIFMEDIA, (caddr_t)&ifmr) < 0)
err(1, "SIOCGIFMEDIA");
printf("\tmedia: ");
print_media_word(ifmr.ifm_current, 1);
if (ifmr.ifm_active != ifmr.ifm_current) {
putchar(' ');
putchar('(');
print_media_word(ifmr.ifm_active, 0);
putchar(')');
}
putchar('\n');
if (ifmr.ifm_status & IFM_AVALID) {
printf("\tstatus: ");
switch (IFM_TYPE(ifmr.ifm_active)) {
case IFM_ETHER:
if (ifmr.ifm_status & IFM_ACTIVE)
printf("active");
else
printf("no carrier");
break;
case IFM_FDDI:
case IFM_TOKEN:
if (ifmr.ifm_status & IFM_ACTIVE)
printf("inserted");
else
printf("no ring");
break;
case IFM_ATM:
if (ifmr.ifm_status & IFM_ACTIVE)
printf("active");
else
printf("no carrier");
break;
case IFM_IEEE80211:
/* XXX: Different value for adhoc? */
if (ifmr.ifm_status & IFM_ACTIVE)
printf("associated");
else
printf("no carrier");
break;
}
putchar('\n');
}
if (ifmr.ifm_count > 0 && supmedia) {
printf("\tsupported media:\n");
for (i = 0; i < ifmr.ifm_count; i++) {
printf("\t\t");
print_media_word_ifconfig(media_list[i]);
putchar('\n');
}
}
free(media_list);
}
static struct ifmediareq *
getifmediastate(int s)
{
static struct ifmediareq *ifmr = NULL;
int *mwords;
if (ifmr == NULL) {
ifmr = (struct ifmediareq *)malloc(sizeof(struct ifmediareq));
if (ifmr == NULL)
err(1, "malloc");
(void) memset(ifmr, 0, sizeof(struct ifmediareq));
(void) strncpy(ifmr->ifm_name, name,
sizeof(ifmr->ifm_name));
ifmr->ifm_count = 0;
ifmr->ifm_ulist = NULL;
/*
* We must go through the motions of reading all
* supported media because we need to know both
* the current media type and the top-level type.
*/
if (ioctl(s, SIOCGIFMEDIA, (caddr_t)ifmr) < 0) {
err(1, "SIOCGIFMEDIA");
}
if (ifmr->ifm_count == 0)
errx(1, "%s: no media types?", name);
mwords = (int *)malloc(ifmr->ifm_count * sizeof(int));
if (mwords == NULL)
err(1, "malloc");
ifmr->ifm_ulist = mwords;
if (ioctl(s, SIOCGIFMEDIA, (caddr_t)ifmr) < 0)
err(1, "SIOCGIFMEDIA");
}
return ifmr;
}
static void
setifmediacallback(int s, void *arg)
{
struct ifmediareq *ifmr = (struct ifmediareq *)arg;
static int did_it = 0;
if (!did_it) {
if (ioctl(s, SIOCSIFMEDIA, (caddr_t)&ifr) < 0)
err(1, "SIOCSIFMEDIA (media)");
free(ifmr->ifm_ulist);
free(ifmr);
did_it = 1;
}
}
static void
setmedia(const char *val, int d, int s, const struct afswtch *afp)
{
struct ifmediareq *ifmr;
int subtype;
ifmr = getifmediastate(s);
/*
* We are primarily concerned with the top-level type.
* However, "current" may be only IFM_NONE, so we just look
* for the top-level type in the first "supported type"
* entry.
*
* (I'm assuming that all supported media types for a given
* interface will be the same top-level type..)
*/
subtype = get_media_subtype(IFM_TYPE(ifmr->ifm_ulist[0]), val);
strncpy(ifr.ifr_name, name, sizeof(ifr.ifr_name));
ifr.ifr_media = (ifmr->ifm_current & ~(IFM_NMASK|IFM_TMASK)) |
IFM_TYPE(ifmr->ifm_ulist[0]) | subtype;
if ((ifr.ifr_media & IFM_TMASK) == 0) {
ifr.ifr_media &= ~IFM_GMASK;
}
ifmr->ifm_current = ifr.ifr_media;
callback_register(setifmediacallback, (void *)ifmr);
}
static void
setmediaopt(const char *val, int d, int s, const struct afswtch *afp)
{
domediaopt(val, 0, s);
}
static void
unsetmediaopt(const char *val, int d, int s, const struct afswtch *afp)
{
domediaopt(val, 1, s);
}
static void
domediaopt(const char *val, int clear, int s)
{
struct ifmediareq *ifmr;
int options;
ifmr = getifmediastate(s);
options = get_media_options(IFM_TYPE(ifmr->ifm_ulist[0]), val);
strncpy(ifr.ifr_name, name, sizeof(ifr.ifr_name));
ifr.ifr_media = ifmr->ifm_current;
if (clear)
ifr.ifr_media &= ~options;
else
ifr.ifr_media |= options;
ifmr->ifm_current = ifr.ifr_media;
callback_register(setifmediacallback, (void *)ifmr);
}
static void
setmediamode(const char *val, int d, int s, const struct afswtch *afp)
{
struct ifmediareq *ifmr;
int mode;
ifmr = getifmediastate(s);
mode = get_media_mode(IFM_TYPE(ifmr->ifm_ulist[0]), val);
strncpy(ifr.ifr_name, name, sizeof(ifr.ifr_name));
ifr.ifr_media = (ifmr->ifm_current & ~IFM_MMASK) | mode;
ifmr->ifm_current = ifr.ifr_media;
callback_register(setifmediacallback, (void *)ifmr);
}
/**********************************************************************
* A good chunk of this is duplicated from sys/net/ifmedia.c
**********************************************************************/
static struct ifmedia_description ifm_type_descriptions[] =
IFM_TYPE_DESCRIPTIONS;
static struct ifmedia_description ifm_subtype_ethernet_descriptions[] =
IFM_SUBTYPE_ETHERNET_DESCRIPTIONS;
static struct ifmedia_description ifm_subtype_ethernet_aliases[] =
IFM_SUBTYPE_ETHERNET_ALIASES;
static struct ifmedia_description ifm_subtype_ethernet_option_descriptions[] =
IFM_SUBTYPE_ETHERNET_OPTION_DESCRIPTIONS;
static struct ifmedia_description ifm_subtype_tokenring_descriptions[] =
IFM_SUBTYPE_TOKENRING_DESCRIPTIONS;
static struct ifmedia_description ifm_subtype_tokenring_aliases[] =
IFM_SUBTYPE_TOKENRING_ALIASES;
static struct ifmedia_description ifm_subtype_tokenring_option_descriptions[] =
IFM_SUBTYPE_TOKENRING_OPTION_DESCRIPTIONS;
static struct ifmedia_description ifm_subtype_fddi_descriptions[] =
IFM_SUBTYPE_FDDI_DESCRIPTIONS;
static struct ifmedia_description ifm_subtype_fddi_aliases[] =
IFM_SUBTYPE_FDDI_ALIASES;
static struct ifmedia_description ifm_subtype_fddi_option_descriptions[] =
IFM_SUBTYPE_FDDI_OPTION_DESCRIPTIONS;
static struct ifmedia_description ifm_subtype_ieee80211_descriptions[] =
IFM_SUBTYPE_IEEE80211_DESCRIPTIONS;
static struct ifmedia_description ifm_subtype_ieee80211_aliases[] =
IFM_SUBTYPE_IEEE80211_ALIASES;
static struct ifmedia_description ifm_subtype_ieee80211_option_descriptions[] =
IFM_SUBTYPE_IEEE80211_OPTION_DESCRIPTIONS;
struct ifmedia_description ifm_subtype_ieee80211_mode_descriptions[] =
IFM_SUBTYPE_IEEE80211_MODE_DESCRIPTIONS;
struct ifmedia_description ifm_subtype_ieee80211_mode_aliases[] =
IFM_SUBTYPE_IEEE80211_MODE_ALIASES;
static struct ifmedia_description ifm_subtype_atm_descriptions[] =
IFM_SUBTYPE_ATM_DESCRIPTIONS;
static struct ifmedia_description ifm_subtype_atm_aliases[] =
IFM_SUBTYPE_ATM_ALIASES;
static struct ifmedia_description ifm_subtype_atm_option_descriptions[] =
IFM_SUBTYPE_ATM_OPTION_DESCRIPTIONS;
static struct ifmedia_description ifm_subtype_shared_descriptions[] =
IFM_SUBTYPE_SHARED_DESCRIPTIONS;
static struct ifmedia_description ifm_subtype_shared_aliases[] =
IFM_SUBTYPE_SHARED_ALIASES;
static struct ifmedia_description ifm_shared_option_descriptions[] =
IFM_SHARED_OPTION_DESCRIPTIONS;
struct ifmedia_type_to_subtype {
struct {
struct ifmedia_description *desc;
int alias;
} subtypes[5];
struct {
struct ifmedia_description *desc;
int alias;
} options[3];
struct {
struct ifmedia_description *desc;
int alias;
} modes[3];
};
/* must be in the same order as IFM_TYPE_DESCRIPTIONS */
static struct ifmedia_type_to_subtype ifmedia_types_to_subtypes[] = {
{
{
{ &ifm_subtype_shared_descriptions[0], 0 },
{ &ifm_subtype_shared_aliases[0], 1 },
{ &ifm_subtype_ethernet_descriptions[0], 0 },
{ &ifm_subtype_ethernet_aliases[0], 1 },
{ NULL, 0 },
},
{
{ &ifm_shared_option_descriptions[0], 0 },
{ &ifm_subtype_ethernet_option_descriptions[0], 0 },
{ NULL, 0 },
},
{
{ NULL, 0 },
},
},
{
{
{ &ifm_subtype_shared_descriptions[0], 0 },
{ &ifm_subtype_shared_aliases[0], 1 },
{ &ifm_subtype_tokenring_descriptions[0], 0 },
{ &ifm_subtype_tokenring_aliases[0], 1 },
{ NULL, 0 },
},
{
{ &ifm_shared_option_descriptions[0], 0 },
{ &ifm_subtype_tokenring_option_descriptions[0], 0 },
{ NULL, 0 },
},
{
{ NULL, 0 },
},
},
{
{
{ &ifm_subtype_shared_descriptions[0], 0 },
{ &ifm_subtype_shared_aliases[0], 1 },
{ &ifm_subtype_fddi_descriptions[0], 0 },
{ &ifm_subtype_fddi_aliases[0], 1 },
{ NULL, 0 },
},
{
{ &ifm_shared_option_descriptions[0], 0 },
{ &ifm_subtype_fddi_option_descriptions[0], 0 },
{ NULL, 0 },
},
{
{ NULL, 0 },
},
},
{
{
{ &ifm_subtype_shared_descriptions[0], 0 },
{ &ifm_subtype_shared_aliases[0], 1 },
{ &ifm_subtype_ieee80211_descriptions[0], 0 },
{ &ifm_subtype_ieee80211_aliases[0], 1 },
{ NULL, 0 },
},
{
{ &ifm_shared_option_descriptions[0], 0 },
{ &ifm_subtype_ieee80211_option_descriptions[0], 0 },
{ NULL, 0 },
},
{
{ &ifm_subtype_ieee80211_mode_descriptions[0], 0 },
{ &ifm_subtype_ieee80211_mode_aliases[0], 0 },
{ NULL, 0 },
},
},
{
{
{ &ifm_subtype_shared_descriptions[0], 0 },
{ &ifm_subtype_shared_aliases[0], 1 },
{ &ifm_subtype_atm_descriptions[0], 0 },
{ &ifm_subtype_atm_aliases[0], 1 },
{ NULL, 0 },
},
{
{ &ifm_shared_option_descriptions[0], 0 },
{ &ifm_subtype_atm_option_descriptions[0], 0 },
{ NULL, 0 },
},
{
{ NULL, 0 },
},
},
};
static int
get_media_subtype(int type, const char *val)
{
struct ifmedia_description *desc;
struct ifmedia_type_to_subtype *ttos;
int rval, i;
/* Find the top-level interface type. */
for (desc = ifm_type_descriptions, ttos = ifmedia_types_to_subtypes;
desc->ifmt_string != NULL; desc++, ttos++)
if (type == desc->ifmt_word)
break;
if (desc->ifmt_string == NULL)
errx(1, "unknown media type 0x%x", type);
for (i = 0; ttos->subtypes[i].desc != NULL; i++) {
rval = lookup_media_word(ttos->subtypes[i].desc, val);
if (rval != -1)
return (rval);
}
errx(1, "unknown media subtype: %s", val);
/*NOTREACHED*/
}
static int
get_media_mode(int type, const char *val)
{
struct ifmedia_description *desc;
struct ifmedia_type_to_subtype *ttos;
int rval, i;
/* Find the top-level interface type. */
for (desc = ifm_type_descriptions, ttos = ifmedia_types_to_subtypes;
desc->ifmt_string != NULL; desc++, ttos++)
if (type == desc->ifmt_word)
break;
if (desc->ifmt_string == NULL)
errx(1, "unknown media mode 0x%x", type);
for (i = 0; ttos->modes[i].desc != NULL; i++) {
rval = lookup_media_word(ttos->modes[i].desc, val);
if (rval != -1)
return (rval);
}
return -1;
}
static int
get_media_options(int type, const char *val)
{
struct ifmedia_description *desc;
struct ifmedia_type_to_subtype *ttos;
char *optlist, *optptr;
int option = 0, i, rval = 0;
/* We muck with the string, so copy it. */
optlist = strdup(val);
if (optlist == NULL)
err(1, "strdup");
/* Find the top-level interface type. */
for (desc = ifm_type_descriptions, ttos = ifmedia_types_to_subtypes;
desc->ifmt_string != NULL; desc++, ttos++)
if (type == desc->ifmt_word)
break;
if (desc->ifmt_string == NULL)
errx(1, "unknown media type 0x%x", type);
/*
* Look up the options in the user-provided comma-separated
* list.
*/
optptr = optlist;
for (; (optptr = strtok(optptr, ",")) != NULL; optptr = NULL) {
for (i = 0; ttos->options[i].desc != NULL; i++) {
option = lookup_media_word(ttos->options[i].desc, optptr);
if (option != -1)
break;
}
if (option == 0)
errx(1, "unknown option: %s", optptr);
rval |= option;
}
free(optlist);
return (rval);
}
static int
lookup_media_word(struct ifmedia_description *desc, const char *val)
{
for (; desc->ifmt_string != NULL; desc++)
if (strcasecmp(desc->ifmt_string, val) == 0)
return (desc->ifmt_word);
return (-1);
}
static struct ifmedia_description *get_toptype_desc(int ifmw)
{
struct ifmedia_description *desc;
for (desc = ifm_type_descriptions; desc->ifmt_string != NULL; desc++)
if (IFM_TYPE(ifmw) == desc->ifmt_word)
break;
return desc;
}
static struct ifmedia_type_to_subtype *get_toptype_ttos(int ifmw)
{
struct ifmedia_description *desc;
struct ifmedia_type_to_subtype *ttos;
for (desc = ifm_type_descriptions, ttos = ifmedia_types_to_subtypes;
desc->ifmt_string != NULL; desc++, ttos++)
if (IFM_TYPE(ifmw) == desc->ifmt_word)
break;
return ttos;
}
static struct ifmedia_description *get_subtype_desc(int ifmw,
struct ifmedia_type_to_subtype *ttos)
{
int i;
struct ifmedia_description *desc;
for (i = 0; ttos->subtypes[i].desc != NULL; i++) {
if (ttos->subtypes[i].alias)
continue;
for (desc = ttos->subtypes[i].desc;
desc->ifmt_string != NULL; desc++) {
if (IFM_SUBTYPE(ifmw) == desc->ifmt_word)
return desc;
}
}
return NULL;
}
static struct ifmedia_description *get_mode_desc(int ifmw,
struct ifmedia_type_to_subtype *ttos)
{
int i;
struct ifmedia_description *desc;
for (i = 0; ttos->modes[i].desc != NULL; i++) {
if (ttos->modes[i].alias)
continue;
for (desc = ttos->modes[i].desc;
desc->ifmt_string != NULL; desc++) {
if (IFM_MODE(ifmw) == desc->ifmt_word)
return desc;
}
}
return NULL;
}
static void
print_media_word(int ifmw, int print_toptype)
{
struct ifmedia_description *desc;
struct ifmedia_type_to_subtype *ttos;
int seen_option = 0, i;
/* Find the top-level interface type. */
desc = get_toptype_desc(ifmw);
ttos = get_toptype_ttos(ifmw);
if (desc->ifmt_string == NULL) {
printf("<unknown type>");
return;
} else if (print_toptype) {
printf("%s", desc->ifmt_string);
}
/*
* Don't print the top-level type; it's not like we can
* change it, or anything.
*/
/* Find subtype. */
desc = get_subtype_desc(ifmw, ttos);
if (desc != NULL)
goto got_subtype;
/* Falling to here means unknown subtype. */
printf("<unknown subtype>");
return;
got_subtype:
if (print_toptype)
putchar(' ');
printf("%s", desc->ifmt_string);
if (print_toptype) {
desc = get_mode_desc(ifmw, ttos);
if (desc != NULL && strcasecmp("autoselect", desc->ifmt_string))
printf(" mode %s", desc->ifmt_string);
}
/* Find options. */
for (i = 0; ttos->options[i].desc != NULL; i++) {
if (ttos->options[i].alias)
continue;
for (desc = ttos->options[i].desc;
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", seen_option ? ">" : "");
}
static void
print_media_word_ifconfig(int ifmw)
{
struct ifmedia_description *desc;
struct ifmedia_type_to_subtype *ttos;
int i;
/* Find the top-level interface type. */
desc = get_toptype_desc(ifmw);
ttos = get_toptype_ttos(ifmw);
if (desc->ifmt_string == NULL) {
printf("<unknown type>");
return;
}
/*
* Don't print the top-level type; it's not like we can
* change it, or anything.
*/
/* Find subtype. */
desc = get_subtype_desc(ifmw, ttos);
if (desc != NULL)
goto got_subtype;
/* Falling to here means unknown subtype. */
printf("<unknown subtype>");
return;
got_subtype:
printf("media %s", desc->ifmt_string);
desc = get_mode_desc(ifmw, ttos);
if (desc != NULL)
printf(" mode %s", desc->ifmt_string);
/* Find options. */
for (i = 0; ttos->options[i].desc != NULL; i++) {
if (ttos->options[i].alias)
continue;
for (desc = ttos->options[i].desc;
desc->ifmt_string != NULL; desc++) {
if (ifmw & desc->ifmt_word) {
printf(" mediaopt %s", desc->ifmt_string);
}
}
}
}
/**********************************************************************
* ...until here.
**********************************************************************/
static struct cmd media_cmds[] = {
DEF_CMD_ARG("media", setmedia),
DEF_CMD_ARG("mode", setmediamode),
DEF_CMD_ARG("mediaopt", setmediaopt),
DEF_CMD_ARG("-mediaopt",unsetmediaopt),
};
static struct afswtch af_media = {
.af_name = "af_media",
.af_af = AF_UNSPEC,
.af_other_status = media_status,
};
static __constructor void
ifmedia_ctor(void)
{
#define N(a) (sizeof(a) / sizeof(a[0]))
int i;
for (i = 0; i < N(media_cmds); i++)
cmd_register(&media_cmds[i]);
af_register(&af_media);
#undef N
}
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