1 files changed, 26 insertions, 0 deletions
diff --git a/obsolete-buildroot/sources/openwrt/root/etc/functions.sh b/obsolete-buildroot/sources/openwrt/root/etc/functions.sh
new file mode 100755
index 000000000..79db1dad3
--- /dev/null
+++ b/obsolete-buildroot/sources/openwrt/root/etc/functions.sh
@@ -0,0 +1,26 @@
+#!/bin/ash
+
+alias debug=${DEBUG:-:}
+
+# allow env to override nvram
+nvram_get () {
+ eval "echo \${$1:-\$(nvram get $1)}"
+}
+. /etc/nvram.overrides
+
+# valid interface?
+if_valid () (
+  [ "${1%%[0-9]}" = "vlan" ] && {
+    i=${1#vlan}
+    hwname=$(nvram_get vlan${i}hwname)
+    hwaddr=$(nvram_get ${hwname}macaddr)
+    [ -z "$hwaddr" ] && return 1
+
+    vif=$(ifconfig -a | awk '/^eth.*'$hwaddr'/ {print $1; exit}' IGNORECASE=1)
+    debug "# vlan$i: $hwname $hwaddr => $vif"
+
+    $DEBUG ifconfig $vif up
+    $DEBUG vconfig add $vif $i 2>/dev/null
+  }
+  ifconfig "$1" >/dev/null 2>&1 || [ "${1%%[0-9]}" = "br" ]
+)