netifd: add missing do_sysctl function

git-svn-id: svn://svn.openwrt.org/openwrt/trunk@30749 3c298f89-4303-0410-b956-a3cf2f4a3e73

diff --git a/package/netifd/files/lib/network/config.sh b/package/netifd/files/lib/network/config.sh
index ab3efe8..129cb66 100755 (executable)
--- a/package/netifd/files/lib/network/config.sh
+++ b/package/netifd/files/lib/network/config.sh
@@ -57,3 +57,8 @@ setup_interface() {
        ubus call network.interface."$config" add_device "{ \"name\": \"$iface\" }"
 }
 
+do_sysctl() {
+       [ -n "$2" ] && \
+               sysctl -n -e -w "$1=$2" >/dev/null || \
+               sysctl -n -e "$1"
+}