fedora core 6 1.2949 + vserver 2.2.0

[linux-2.6.git] / net / ieee80211 / ieee80211_geo.c

diff --git a/net/ieee80211/ieee80211_geo.c b/net/ieee80211/ieee80211_geo.c
index 610cc5c..305a09d 100644 (file)
--- a/net/ieee80211/ieee80211_geo.c
+++ b/net/ieee80211/ieee80211_geo.c
@@ -24,7 +24,6 @@
 
 ******************************************************************************/
 #include <linux/compiler.h>
-#include <linux/config.h>
 #include <linux/errno.h>
 #include <linux/if_arp.h>
 #include <linux/in6.h>
@@ -50,7 +49,8 @@ int ieee80211_is_valid_channel(struct ieee80211_device *ieee, u8 channel)
 
        /* 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->geo.bg_channels == 0 && ieee->geo.a_channels == 0)
+               return 0;
 
        if (ieee->freq_band & IEEE80211_24GHZ_BAND)
                for (i = 0; i < ieee->geo.bg_channels; i++)
@@ -58,13 +58,15 @@ int ieee80211_is_valid_channel(struct ieee80211_device *ieee, u8 channel)
                         * this is a B only channel, we don't see it
                         * as valid. */
                        if ((ieee->geo.bg[i].channel == channel) &&
+                           !(ieee->geo.bg[i].flags & IEEE80211_CH_INVALID) &&
                            (!(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)
+                       if ((ieee->geo.a[i].channel == channel) &&
+                           !(ieee->geo.a[i].flags & IEEE80211_CH_INVALID))
                                return IEEE80211_52GHZ_BAND;
 
        return 0;
@@ -76,7 +78,8 @@ int ieee80211_channel_to_index(struct ieee80211_device *ieee, u8 channel)
 
        /* 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->geo.bg_channels == 0 && ieee->geo.a_channels == 0)
+               return -1;
 
        if (ieee->freq_band & IEEE80211_24GHZ_BAND)
                for (i = 0; i < ieee->geo.bg_channels; i++)
@@ -97,7 +100,8 @@ u8 ieee80211_freq_to_channel(struct ieee80211_device * ieee, u32 freq)
 
        /* 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->geo.bg_channels == 0 && ieee->geo.a_channels == 0)
+               return 0;
 
        freq /= 100000;
 
@@ -133,6 +137,41 @@ const struct ieee80211_geo *ieee80211_get_geo(struct ieee80211_device *ieee)
        return &ieee->geo;
 }
 
+u8 ieee80211_get_channel_flags(struct ieee80211_device * ieee, u8 channel)
+{
+       int index = ieee80211_channel_to_index(ieee, channel);
+
+       if (index == -1)
+               return IEEE80211_CH_INVALID;
+
+       if (channel <= IEEE80211_24GHZ_CHANNELS)
+               return ieee->geo.bg[index].flags;
+
+       return ieee->geo.a[index].flags;
+}
+
+static const struct ieee80211_channel bad_channel = {
+       .channel = 0,
+       .flags = IEEE80211_CH_INVALID,
+       .max_power = 0,
+};
+
+const struct ieee80211_channel *ieee80211_get_channel(struct ieee80211_device
+                                                     *ieee, u8 channel)
+{
+       int index = ieee80211_channel_to_index(ieee, channel);
+
+       if (index == -1)
+               return &bad_channel;
+
+       if (channel <= IEEE80211_24GHZ_CHANNELS)
+               return &ieee->geo.bg[index];
+
+       return &ieee->geo.a[index];
+}
+
+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_index);