netifd: Make mtu configurable of dynamic 6rd tunnel interface

Patch allows to configure the mtu of the dynamic 6rd tunnel interface when created by dhcp script.
In some setups it's desirable to have config control over the 6rd tunnel mtu to maximize the traffic throughput

Signed-off-by: Hans Dedecker <dedeckeh@gmail.com>
git-svn-id: svn://svn.openwrt.org/openwrt/trunk@42871 3c298f89-4303-0410-b956-a3cf2f4a3e73

diff --git a/package/network/config/netifd/files/lib/netifd/dhcp.script b/package/network/config/netifd/files/lib/netifd/dhcp.script
index 593fb93..90fa6d3 100755 (executable)
--- a/package/network/config/netifd/files/lib/netifd/dhcp.script
+++ b/package/network/config/netifd/files/lib/netifd/dhcp.script
@@ -65,6 +65,7 @@ setup_interface () {
                [ -n "$IFACE6RD_DELEGATE" ] && json_add_boolean delegate "$IFACE6RD_DELEGATE"
                [ -n "$ZONE6RD" ] || ZONE6RD=$ZONE
                [ -n "$ZONE6RD" ] && json_add_string zone "$ZONE6RD"
+               [ -n "$MTU6RD" ] && json_add_string mtu "$MTU6RD"
                json_close_object
 
                ubus call network add_dynamic "$(json_dump)"

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 b14f7be..6668b49 100755 (executable)
--- a/package/network/config/netifd/files/lib/netifd/proto/dhcp.sh
+++ b/package/network/config/netifd/files/lib/netifd/proto/dhcp.sh
@@ -18,14 +18,15 @@ proto_dhcp_init_config() {
        proto_config_add_boolean delegate
        proto_config_add_string zone6rd
        proto_config_add_string zone
+       proto_config_add_string mtu6rd
 }
 
 proto_dhcp_setup() {
        local config="$1"
        local iface="$2"
 
-       local ipaddr hostname clientid vendorid broadcast reqopts iface6rd sendopts delegate zone6rd zone
-       json_get_vars ipaddr hostname clientid vendorid broadcast reqopts iface6rd sendopts delegate zone6rd zone
+       local ipaddr hostname clientid vendorid broadcast reqopts iface6rd sendopts delegate zone6rd zone mtu6rd
+       json_get_vars ipaddr hostname clientid vendorid broadcast reqopts iface6rd sendopts delegate zone6rd zone mtu6rd
 
        local opt dhcpopts
        for opt in $reqopts; do
@@ -42,6 +43,7 @@ proto_dhcp_setup() {
        [ -n "$iface6rd" ] && append dhcpopts "-O 212"
        [ -n "$zone6rd" ] && proto_export "ZONE6RD=$zone6rd"
        [ -n "$zone" ] && proto_export "ZONE=$zone"
+       [ -n "$mtu6rd" ] && proto_export "MTU6RD=$mtu6rd"
        [ "$delegate" = "0" ] && proto_export "IFACE6RD_DELEGATE=0"
 
        proto_export "INTERFACE=$config"