wireless: Add function to find DFS channels.

diff --git a/functions.wireless b/functions.wireless
index f6e6cb1d47e139571d42e8babbd02f7226449b93..cd17de4cf97d99568933b3137f1c89005d91b09b 100644 (file)
--- a/functions.wireless
+++ b/functions.wireless
@@ -189,3 +189,10 @@ function wireless_ibss_leave() {
        log INFO "${device} leaving ibss network"
        cmd_quiet iw dev "${device}" ibss leave
 }
+
+function wireless_is_radar_frequency() {
+       local frequency="${1}"
+       assert isset frequency
+
+       [[ ${frequency} -ge 5260 ]] && [[ ${frequency} -le 5700 ]]
+}