1 files changed, 28 insertions, 0 deletions

diff --git a/net/mac80211/util.c b/net/mac80211/util.c
index c3a22ab2ad2e..cf0b820a0eaa 100644
--- a/net/mac80211/util.c
+++ b/net/mac80211/util.c
@@ -612,3 +612,31 @@ void ieee80211_tx_skb(struct ieee80211_sub_if_data *sdata, struct sk_buff *skb,
 
         dev_queue_xmit(skb);
 }
+
+int ieee80211_set_freq(struct ieee80211_sub_if_data *sdata, int freqMHz)
+{
+        int ret = -EINVAL;
+        struct ieee80211_channel *chan;
+        struct ieee80211_local *local = sdata->local;
+
+        chan = ieee80211_get_channel(local->hw.wiphy, freqMHz);
+
+        if (chan && !(chan->flags & IEEE80211_CHAN_DISABLED)) {
+                if (sdata->vif.type == IEEE80211_IF_TYPE_IBSS &&
+                    chan->flags & IEEE80211_CHAN_NO_IBSS) {
+                        printk(KERN_DEBUG "%s: IBSS not allowed on frequency "
+                                "%d MHz\n", sdata->dev->name, chan->center_freq);
+                        return ret;
+                }
+                local->oper_channel = chan;
+
+                if (local->sta_sw_scanning || local->sta_hw_scanning)
+                        ret = 0;
+                else
+                        ret = ieee80211_hw_config(local);
+
+                rate_control_clear(local);
+        }
+
+        return ret;
+}