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