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authorLarry Finger <Larry.Finger@lwfinger.net>2007-04-21 17:56:29 -0500
committerJohn W. Linville <linville@tuxdriver.com>2007-05-08 11:51:59 -0400
commitf5cdf30618cf855c2043e5c0c131ebb120929864 (patch)
tree189eb22a99d2c7de6ef083ccd78a5dee52a44f4b
parent5b94f675f57e4ff16c8fda09088d7480a84dcd91 (diff)
[PATCH] ieee80211: add ieee80211_channel_to_freq
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>
-rw-r--r--include/net/ieee80211.h2
-rw-r--r--net/ieee80211/ieee80211_geo.c16
2 files changed, 18 insertions, 0 deletions
diff --git a/include/net/ieee80211.h b/include/net/ieee80211.h
index d56b2923d61a..bbd85cd61ed5 100644
--- a/include/net/ieee80211.h
+++ b/include/net/ieee80211.h
@@ -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,
diff --git a/net/ieee80211/ieee80211_geo.c b/net/ieee80211/ieee80211_geo.c
index 305a09de85a5..960ad13f5e9f 100644
--- a/net/ieee80211/ieee80211_geo.c
+++ b/net/ieee80211/ieee80211_geo.c
@@ -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);