netifd: Add renew handler for proto dhcp

Signed-off-by: Helmut Schaa <helmut.schaa@googlemail.com>
SVN-Revision: 40385

diff --git a/package/network/config/netifd/files/lib/netifd/proto/dhcp.sh b/package/network/config/netifd/files/lib/netifd/proto/dhcp.sh
index dc8c97c8fe567f47e191c6cd9521cd530f22b503..2e58c19c44ec1af7b0270d459564d5f7d05046d3 100755 (executable)
--- a/package/network/config/netifd/files/lib/netifd/proto/dhcp.sh
+++ b/package/network/config/netifd/files/lib/netifd/proto/dhcp.sh
@@ -5,6 +5,8 @@
 init_proto "$@"
 
 proto_dhcp_init_config() {
+       renew_handler=1
+
        proto_config_add_string 'ipaddr:ipaddr'
        proto_config_add_string 'hostname:hostname'
        proto_config_add_string clientid
@@ -51,6 +53,13 @@ proto_dhcp_setup() {
                $clientid $broadcast $dhcpopts
 }
 
+proto_dhcp_renew() {
+       local interface="$1"
+       # SIGUSR1 forces udhcpc to renew its lease
+       local sigusr1="$(kill -l SIGUSR1)"
+       [ -n "$sigusr1" ] && proto_kill_command "$interface" $sigusr1
+}
+
 proto_dhcp_teardown() {
        local interface="$1"
        proto_kill_command "$interface"