network-interfaces: Add mtu setting support

Adds a setting to the network interface configuration for changing the
mtu for each specified interface.
This commit is contained in:
William A. Kennington III 2013-12-29 20:58:59 -06:00
parent 4cc859c6be
commit c6ab810e37

View file

@ -58,6 +58,15 @@ let
'';
};
mtu = mkOption {
default = null;
example = 9000;
type = types.nullOr types.int;
description = ''
MTU size for packets leaving the interface. Leave empty to use the default.
'';
};
virtual = mkOption {
default = false;
type = types.bool;
@ -342,6 +351,11 @@ in
echo "setting MAC address to ${i.macAddress}..."
ip link set "${i.name}" address "${i.macAddress}"
''
+ optionalString (i.mtu != null)
''
echo "setting MTU to ${toString i.mtu}..."
ip link set "${i.name}" mtu "${toString i.mtu}"
''
+ optionalString (i.ipAddress != null)
''
cur=$(ip -4 -o a show dev "${i.name}" | awk '{print $4}')