+find_atheros_phy() {
+ local device="$1"
+
+ local macaddr="$(config_get "$device" macaddr | tr 'A-Z' 'a-z')"
+ config_get phy "$device" phy
+ [ -z "$phy" -a -n "$macaddr" ] && {
+ cd /proc/sys/dev
+ for phy in $(ls -d wifi* 2>&-); do
+ [ "$macaddr" = "$(cat /sys/class/net/${phy}/address)" ] || continue
+ config_set "$device" phy "$phy"
+ break
+ done
+ config_get phy "$device" phy
+ }
+ [ -n "$phy" -a -d "/proc/sys/dev/$phy" ] || {
+ echo "phy for wifi device $1 not found"
+ return 1
+ }
+ [ -z "$macaddr" ] && {
+ config_set "$device" macaddr "$(cat /sys/class/net/${phy}/address)"
+ }
+ return 0
+}
+