1 files changed, 29 insertions, 0 deletions

diff --git a/net/wireless/reg.c b/net/wireless/reg.c
index 2b8c1000c1be..58f48b8f42ae 100644
--- a/net/wireless/reg.c
+++ b/net/wireless/reg.c
@@ -2616,6 +2616,35 @@ static void reg_timeout_work(struct work_struct *work)
         rtnl_unlock();
 }
 
+/*
+ * See http://www.fcc.gov/document/5-ghz-unlicensed-spectrum-unii, for
+ * UNII band definitions
+ */
+int cfg80211_get_unii(int freq)
+{
+        /* UNII-1 */
+        if (freq >= 5150 && freq <= 5250)
+                return 0;
+
+        /* UNII-2A */
+        if (freq > 5250 && freq <= 5350)
+                return 1;
+
+        /* UNII-2B */
+        if (freq > 5350 && freq <= 5470)
+                return 2;
+
+        /* UNII-2C */
+        if (freq > 5470 && freq <= 5725)
+                return 3;
+
+        /* UNII-3 */
+        if (freq > 5725 && freq <= 5825)
+                return 4;
+
+        return -EINVAL;
+}
+
 int __init regulatory_init(void)
 {
         int err = 0;