cfg80211: Enable GO operation on additional channels

[mirror_ubuntu-bionic-kernel.git] / net / wireless / reg.c

diff --git a/net/wireless/reg.c b/net/wireless/reg.c
index 2b8c1000c1beb4c9b596ac0ddb70043b26b7c823..58f48b8f42ae90b06b8b4d851d70affb8c0d18af 100644 (file)
--- 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;