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[PATCH] ieee80211: add ieee80211_channel_to_freq

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The routines that interrogate the ieee80211_geo struct are missing a
channel to frequency entry. This patch adds it.

Signed-off-by: Larry Finger <Larry.Finger@lwfinger.net>
Signed-off-by: John W. Linville <linville@tuxdriver.com>
This commit is contained in:
Larry Finger 2007-04-21 17:56:29 -05:00 committed by John W. Linville
parent 5b94f675f5
commit f5cdf30618
2 changed files with 18 additions and 0 deletions
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2
include/net/ieee80211.h
View file

@ -1291,6 +1291,8 @@ extern u8 ieee80211_get_channel_flags(struct ieee80211_device *ieee,
extern const struct ieee80211_channel *ieee80211_get_channel(struct
ieee80211_device
*ieee, u8 channel);
extern u32 ieee80211_channel_to_freq(struct ieee80211_device * ieee,
u8 channel);
/* ieee80211_wx.c */
extern int ieee80211_wx_get_scan(struct ieee80211_device *ieee,

16
net/ieee80211/ieee80211_geo.c
View file

@ -94,6 +94,21 @@ int ieee80211_channel_to_index(struct ieee80211_device *ieee, u8 channel)
return -1;
}
u32 ieee80211_channel_to_freq(struct ieee80211_device * ieee, u8 channel)
{
const struct ieee80211_channel * ch;
/* Driver needs to initialize the geography map before using
* these helper functions */
if (ieee->geo.bg_channels == 0 && ieee->geo.a_channels == 0)
return 0;
ch = ieee80211_get_channel(ieee, channel);
if (!ch->channel)
return 0;
return ch->freq;
}
u8 ieee80211_freq_to_channel(struct ieee80211_device * ieee, u32 freq)
{
int i;
@ -174,6 +189,7 @@ EXPORT_SYMBOL(ieee80211_get_channel);
EXPORT_SYMBOL(ieee80211_get_channel_flags);
EXPORT_SYMBOL(ieee80211_is_valid_channel);
EXPORT_SYMBOL(ieee80211_freq_to_channel);
EXPORT_SYMBOL(ieee80211_channel_to_freq);
EXPORT_SYMBOL(ieee80211_channel_to_index);
EXPORT_SYMBOL(ieee80211_set_geo);
EXPORT_SYMBOL(ieee80211_get_geo);