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network-interfaces: Add support for creating vlans

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This patch adds support for vlan creation at machine startup, so that we
can adjust interface settings for vlan devices using nix.
This commit is contained in:
William A. Kennington III 2013-12-29 21:52:30 -06:00
parent 2ffab7ba6a
commit cabc0647d9
1 changed files with 61 additions and 0 deletions
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61
nixos/modules/tasks/network-interfaces.nix
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@ -219,6 +219,45 @@ in
};
networking.vlans = mkOption {
default = { };
example = {
vlan0 = {
id = 3;
interface = "enp3s0";
};
vlan1 = {
id = 1;
interface = "wlan0";
};
};
description =
''
This option allows you to define vlan devices that tag packets
on top of a physical interface. The value of this option is an
attribute set. Each attribute specifies a vlan, with the name
specifying the name of the vlan interface.
'';
type = types.attrsOf types.optionSet;
options = {
id = mkOption {
example = 1;
type = types.int;
description = "The vlan identifier";
};
interface = mkOption {
example = "enp4s0";
type = types.string;
description = "The interface the vlan will transmit packets through.";
};
};
};
networking.useDHCP = mkOption {
type = types.bool;
default = true;
@ -421,10 +460,32 @@ in
'';
};
createVlanDevice = n: v:
let
deps = [ "sys-subsystem-net-devices-${v.interface}.device" ];
in
{
description = "Vlan Interface ${n}";
wantedBy = [ "network.target" "sys-subsystem-net-devices-${n}.device" ];
bindsTo = deps;
after = deps;
serviceConfig.Type = "oneshot";
serviceConfig.RemainAfterExit = true;
path = [ pkgs.iproute ];
script = ''
ip link add link "${v.interface}" "${n}" type vlan id "${toString v.id}"
ip link set "${n}" up
'';
postStop = ''
ip link delete "${n}"
'';
};
in listToAttrs (
map configureInterface interfaces ++
map createTunDevice (filter (i: i.virtual) interfaces))
// mapAttrs createBridgeDevice cfg.bridges
// mapAttrs createVlanDevice cfg.vlans
// { "network-setup" = networkSetup; };
# Set the host and domain names in the activation script. Don't