mac80211: inform driver of basic rateset

[linux-2.6-omap-h63xx.git] / net / mac80211 / util.c

diff --git a/net/mac80211/util.c b/net/mac80211/util.c
index a7968df9dacbe0a664e541acecdc1627780d742a..d6aca91e612d5b054300a4ae50c2e5dbbed69e25 100644 (file)
--- a/net/mac80211/util.c
+++ b/net/mac80211/util.c
@@ -640,3 +640,31 @@ int ieee80211_set_freq(struct ieee80211_sub_if_data *sdata, int freqMHz)
 
        return ret;
 }
+
+u64 ieee80211_mandatory_rates(struct ieee80211_local *local,
+                             enum ieee80211_band band)
+{
+       struct ieee80211_supported_band *sband;
+       struct ieee80211_rate *bitrates;
+       u64 mandatory_rates;
+       enum ieee80211_rate_flags mandatory_flag;
+       int i;
+
+       sband = local->hw.wiphy->bands[band];
+       if (!sband) {
+               WARN_ON(1);
+               sband = local->hw.wiphy->bands[local->hw.conf.channel->band];
+       }
+
+       if (band == IEEE80211_BAND_2GHZ)
+               mandatory_flag = IEEE80211_RATE_MANDATORY_B;
+       else
+               mandatory_flag = IEEE80211_RATE_MANDATORY_A;
+
+       bitrates = sband->bitrates;
+       mandatory_rates = 0;
+       for (i = 0; i < sband->n_bitrates; i++)
+               if (bitrates[i].flags & mandatory_flag)
+                       mandatory_rates |= BIT(i);
+       return mandatory_rates;
+}