02cda6ae01
tree 385b391fc0d7c124cd0547fdb6183e9a0c333391 parent 97d7a47f76e72bedde7f402785559ed4c7a8e8e8 author James Ketrenos <jketreno@linux.intel.com> 1124447590 -0500 committer James Ketrenos <jketreno@linux.intel.com> 1127313735 -0500 Added ieee80211_geo to provide helper functions to drivers for implementing supported channel maps. Signed-off-by: James Ketrenos <jketreno@linux.intel.com> Signed-off-by: Jeff Garzik <jgarzik@pobox.com>
142 lines
4.2 KiB
C
142 lines
4.2 KiB
C
/******************************************************************************
|
|
|
|
Copyright(c) 2005 Intel Corporation. All rights reserved.
|
|
|
|
This program is free software; you can redistribute it and/or modify it
|
|
under the terms of version 2 of the GNU General Public License as
|
|
published by the Free Software Foundation.
|
|
|
|
This program is distributed in the hope that it will be useful, but WITHOUT
|
|
ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
|
|
FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for
|
|
more details.
|
|
|
|
You should have received a copy of the GNU General Public License along with
|
|
this program; if not, write to the Free Software Foundation, Inc., 59
|
|
Temple Place - Suite 330, Boston, MA 02111-1307, USA.
|
|
|
|
The full GNU General Public License is included in this distribution in the
|
|
file called LICENSE.
|
|
|
|
Contact Information:
|
|
James P. Ketrenos <ipw2100-admin@linux.intel.com>
|
|
Intel Corporation, 5200 N.E. Elam Young Parkway, Hillsboro, OR 97124-6497
|
|
|
|
******************************************************************************/
|
|
#include <linux/compiler.h>
|
|
#include <linux/config.h>
|
|
#include <linux/errno.h>
|
|
#include <linux/if_arp.h>
|
|
#include <linux/in6.h>
|
|
#include <linux/in.h>
|
|
#include <linux/ip.h>
|
|
#include <linux/kernel.h>
|
|
#include <linux/module.h>
|
|
#include <linux/netdevice.h>
|
|
#include <linux/proc_fs.h>
|
|
#include <linux/skbuff.h>
|
|
#include <linux/slab.h>
|
|
#include <linux/tcp.h>
|
|
#include <linux/types.h>
|
|
#include <linux/version.h>
|
|
#include <linux/wireless.h>
|
|
#include <linux/etherdevice.h>
|
|
#include <asm/uaccess.h>
|
|
|
|
#include <net/ieee80211.h>
|
|
|
|
int ieee80211_is_valid_channel(struct ieee80211_device *ieee, u8 channel)
|
|
{
|
|
int i;
|
|
|
|
/* Driver needs to initialize the geography map before using
|
|
* these helper functions */
|
|
BUG_ON(ieee->geo.bg_channels == 0 && ieee->geo.a_channels == 0);
|
|
|
|
if (ieee->freq_band & IEEE80211_24GHZ_BAND)
|
|
for (i = 0; i < ieee->geo.bg_channels; i++)
|
|
/* NOTE: If G mode is currently supported but
|
|
* this is a B only channel, we don't see it
|
|
* as valid. */
|
|
if ((ieee->geo.bg[i].channel == channel) &&
|
|
(!(ieee->mode & IEEE_G) ||
|
|
!(ieee->geo.bg[i].flags & IEEE80211_CH_B_ONLY)))
|
|
return IEEE80211_24GHZ_BAND;
|
|
|
|
if (ieee->freq_band & IEEE80211_52GHZ_BAND)
|
|
for (i = 0; i < ieee->geo.a_channels; i++)
|
|
if (ieee->geo.a[i].channel == channel)
|
|
return IEEE80211_52GHZ_BAND;
|
|
|
|
return 0;
|
|
}
|
|
|
|
int ieee80211_channel_to_index(struct ieee80211_device *ieee, u8 channel)
|
|
{
|
|
int i;
|
|
|
|
/* Driver needs to initialize the geography map before using
|
|
* these helper functions */
|
|
BUG_ON(ieee->geo.bg_channels == 0 && ieee->geo.a_channels == 0);
|
|
|
|
if (ieee->freq_band & IEEE80211_24GHZ_BAND)
|
|
for (i = 0; i < ieee->geo.bg_channels; i++)
|
|
if (ieee->geo.bg[i].channel == channel)
|
|
return i;
|
|
|
|
if (ieee->freq_band & IEEE80211_52GHZ_BAND)
|
|
for (i = 0; i < ieee->geo.a_channels; i++)
|
|
if (ieee->geo.a[i].channel == channel)
|
|
return i;
|
|
|
|
return -1;
|
|
}
|
|
|
|
u8 ieee80211_freq_to_channel(struct ieee80211_device * ieee, u32 freq)
|
|
{
|
|
int i;
|
|
|
|
/* Driver needs to initialize the geography map before using
|
|
* these helper functions */
|
|
BUG_ON(ieee->geo.bg_channels == 0 && ieee->geo.a_channels == 0);
|
|
|
|
freq /= 100000;
|
|
|
|
if (ieee->freq_band & IEEE80211_24GHZ_BAND)
|
|
for (i = 0; i < ieee->geo.bg_channels; i++)
|
|
if (ieee->geo.bg[i].freq == freq)
|
|
return ieee->geo.bg[i].channel;
|
|
|
|
if (ieee->freq_band & IEEE80211_52GHZ_BAND)
|
|
for (i = 0; i < ieee->geo.a_channels; i++)
|
|
if (ieee->geo.a[i].freq == freq)
|
|
return ieee->geo.a[i].channel;
|
|
|
|
return 0;
|
|
}
|
|
|
|
int ieee80211_set_geo(struct ieee80211_device *ieee,
|
|
const struct ieee80211_geo *geo)
|
|
{
|
|
memcpy(ieee->geo.name, geo->name, 3);
|
|
ieee->geo.name[3] = '\0';
|
|
ieee->geo.bg_channels = geo->bg_channels;
|
|
ieee->geo.a_channels = geo->a_channels;
|
|
memcpy(ieee->geo.bg, geo->bg, geo->bg_channels *
|
|
sizeof(struct ieee80211_channel));
|
|
memcpy(ieee->geo.a, geo->a, ieee->geo.a_channels *
|
|
sizeof(struct ieee80211_channel));
|
|
return 0;
|
|
}
|
|
|
|
const struct ieee80211_geo *ieee80211_get_geo(struct ieee80211_device *ieee)
|
|
{
|
|
return &ieee->geo;
|
|
}
|
|
|
|
EXPORT_SYMBOL(ieee80211_is_valid_channel);
|
|
EXPORT_SYMBOL(ieee80211_freq_to_channel);
|
|
EXPORT_SYMBOL(ieee80211_channel_to_index);
|
|
EXPORT_SYMBOL(ieee80211_set_geo);
|
|
EXPORT_SYMBOL(ieee80211_get_geo);
|