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nixpkgs/nixos/modules/system/boot/networkd.nix
Christian Albrecht 83a64cecc9 networkd: add DHCPServer config section
2015-12-23 06:04:39 +01:00

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{ config, lib, pkgs, ... }:
with lib;
with import ./systemd-unit-options.nix { inherit config lib; };
with import ./systemd-lib.nix { inherit config lib pkgs; };
let
cfg = config.systemd.network;
checkLink = checkUnitConfig "Link" [
(assertOnlyFields [
"Description" "Alias" "MACAddressPolicy" "MACAddress" "NamePolicy" "Name"
"MTUBytes" "BitsPerSecond" "Duplex" "WakeOnLan"
])
(assertValueOneOf "MACAddressPolicy" ["persistent" "random"])
(assertMacAddress "MACAddress")
(assertValueOneOf "NamePolicy" [
"kernel" "database" "onboard" "slot" "path" "mac"
])
(assertByteFormat "MTUBytes")
(assertByteFormat "BitsPerSecond")
(assertValueOneOf "Duplex" ["half" "full"])
(assertValueOneOf "WakeOnLan" ["phy" "magic" "off"])
];
checkNetdev = checkUnitConfig "Netdev" [
(assertOnlyFields [
"Description" "Name" "Kind" "MTUBytes" "MACAddress"
])
(assertHasField "Name")
(assertHasField "Kind")
(assertValueOneOf "Kind" [
"bridge" "bond" "vlan" "macvlan" "vxlan" "ipip"
"gre" "sit" "vti" "veth" "tun" "tap" "dummy"
])
(assertByteFormat "MTUBytes")
(assertMacAddress "MACAddress")
];
checkVlan = checkUnitConfig "VLAN" [
(assertOnlyFields ["Id"])
(assertRange "Id" 0 4094)
];
checkMacvlan = checkUnitConfig "MACVLAN" [
(assertOnlyFields ["Mode"])
(assertValueOneOf "Mode" ["private" "vepa" "bridge" "passthru"])
];
checkVxlan = checkUnitConfig "VXLAN" [
(assertOnlyFields ["Id" "Group" "TOS" "TTL" "MacLearning"])
(assertRange "TTL" 0 255)
(assertValueOneOf "MacLearning" boolValues)
];
checkTunnel = checkUnitConfig "Tunnel" [
(assertOnlyFields ["Local" "Remote" "TOS" "TTL" "DiscoverPathMTU"])
(assertRange "TTL" 0 255)
(assertValueOneOf "DiscoverPathMTU" boolValues)
];
checkPeer = checkUnitConfig "Peer" [
(assertOnlyFields ["Name" "MACAddress"])
(assertMacAddress "MACAddress")
];
tunTapChecks = [
(assertOnlyFields ["OneQueue" "MultiQueue" "PacketInfo" "User" "Group"])
(assertValueOneOf "OneQueue" boolValues)
(assertValueOneOf "MultiQueue" boolValues)
(assertValueOneOf "PacketInfo" boolValues)
];
checkTun = checkUnitConfig "Tun" tunTapChecks;
checkTap = checkUnitConfig "Tap" tunTapChecks;
checkBond = checkUnitConfig "Bond" [
(assertOnlyFields [
"Mode" "TransmitHashPolicy" "LACPTransmitRate" "MIIMonitorSec"
"UpDelaySec" "DownDelaySec"
])
(assertValueOneOf "Mode" [
"balance-rr" "active-backup" "balance-xor"
"broadcast" "802.3ad" "balance-tlb" "balance-alb"
])
(assertValueOneOf "TransmitHashPolicy" [
"layer2" "layer3+4" "layer2+3" "encap2+3" "802.3ad" "encap3+4"
])
(assertValueOneOf "LACPTransmitRate" ["slow" "fast"])
];
checkNetwork = checkUnitConfig "Network" [
(assertOnlyFields [
"Description" "DHCP" "DHCPServer" "IPForward" "IPMasquerade" "IPv4LL" "IPv4LLRoute"
"LLMNR" "Domains" "Bridge" "Bond"
])
(assertValueOneOf "DHCP" ["both" "none" "v4" "v6"])
(assertValueOneOf "DHCPServer" boolValues)
(assertValueOneOf "IPForward" ["yes" "no" "ipv4" "ipv6"])
(assertValueOneOf "IPMasquerade" boolValues)
(assertValueOneOf "IPv4LL" boolValues)
(assertValueOneOf "IPv4LLRoute" boolValues)
(assertValueOneOf "LLMNR" boolValues)
];
checkAddress = checkUnitConfig "Address" [
(assertOnlyFields ["Address" "Peer" "Broadcast" "Label"])
(assertHasField "Address")
];
checkRoute = checkUnitConfig "Route" [
(assertOnlyFields ["Gateway" "Destination" "Metric"])
(assertHasField "Gateway")
];
checkDhcp = checkUnitConfig "DHCP" [
(assertOnlyFields [
"UseDNS" "UseMTU" "SendHostname" "UseHostname" "UseDomains" "UseRoutes"
"CriticalConnections" "VendorClassIdentifier" "RequestBroadcast"
"RouteMetric"
])
(assertValueOneOf "UseDNS" boolValues)
(assertValueOneOf "UseMTU" boolValues)
(assertValueOneOf "SendHostname" boolValues)
(assertValueOneOf "UseHostname" boolValues)
(assertValueOneOf "UseDomains" boolValues)
(assertValueOneOf "UseRoutes" boolValues)
(assertValueOneOf "CriticalConnections" boolValues)
(assertValueOneOf "RequestBroadcast" boolValues)
];
checkDhcpServer = checkUnitConfig "DHCPServer" [
(assertOnlyFields [
"PoolOffset" "PoolSize" "DefaultLeaseTimeSec" "MaxLeaseTimeSec"
"EmitDNS" "DNS" "EmitNTP" "NTP" "EmitTimezone" "Timezone"
])
(assertValueOneOf "EmitDNS" boolValues)
(assertValueOneOf "EmitNTP" boolValues)
(assertValueOneOf "EmitTimezone" boolValues)
];
commonNetworkOptions = {
enable = mkOption {
default = true;
type = types.bool;
description = ''
Whether to manage network configuration using <command>systemd-network</command>.
'';
};
matchConfig = mkOption {
default = {};
example = { Name = "eth0"; };
type = types.attrsOf unitOption;
description = ''
Each attribute in this set specifies an option in the
<literal>[Match]</literal> section of the unit. See
<citerefentry><refentrytitle>systemd.link</refentrytitle><manvolnum>5</manvolnum></citerefentry>
<citerefentry><refentrytitle>systemd.netdev</refentrytitle><manvolnum>5</manvolnum></citerefentry>
<citerefentry><refentrytitle>systemd.network</refentrytitle><manvolnum>5</manvolnum></citerefentry>
for details.
'';
};
};
linkOptions = commonNetworkOptions // {
linkConfig = mkOption {
default = {};
example = { MACAddress = "00:ff:ee:aa:cc:dd"; };
type = types.addCheck (types.attrsOf unitOption) checkLink;
description = ''
Each attribute in this set specifies an option in the
<literal>[Link]</literal> section of the unit. See
<citerefentry><refentrytitle>systemd.link</refentrytitle>
<manvolnum>5</manvolnum></citerefentry> for details.
'';
};
};
netdevOptions = commonNetworkOptions // {
netdevConfig = mkOption {
default = {};
example = { Name = "mybridge"; Kind = "bridge"; };
type = types.addCheck (types.attrsOf unitOption) checkNetdev;
description = ''
Each attribute in this set specifies an option in the
<literal>[Netdev]</literal> section of the unit. See
<citerefentry><refentrytitle>systemd.netdev</refentrytitle>
<manvolnum>5</manvolnum></citerefentry> for details.
'';
};
vlanConfig = mkOption {
default = {};
example = { Id = "4"; };
type = types.addCheck (types.attrsOf unitOption) checkVlan;
description = ''
Each attribute in this set specifies an option in the
<literal>[VLAN]</literal> section of the unit. See
<citerefentry><refentrytitle>systemd.netdev</refentrytitle>
<manvolnum>5</manvolnum></citerefentry> for details.
'';
};
macvlanConfig = mkOption {
default = {};
example = { Mode = "private"; };
type = types.addCheck (types.attrsOf unitOption) checkMacvlan;
description = ''
Each attribute in this set specifies an option in the
<literal>[MACVLAN]</literal> section of the unit. See
<citerefentry><refentrytitle>systemd.netdev</refentrytitle>
<manvolnum>5</manvolnum></citerefentry> for details.
'';
};
vxlanConfig = mkOption {
default = {};
example = { Id = "4"; };
type = types.addCheck (types.attrsOf unitOption) checkVxlan;
description = ''
Each attribute in this set specifies an option in the
<literal>[VXLAN]</literal> section of the unit. See
<citerefentry><refentrytitle>systemd.netdev</refentrytitle>
<manvolnum>5</manvolnum></citerefentry> for details.
'';
};
tunnelConfig = mkOption {
default = {};
example = { Remote = "192.168.1.1"; };
type = types.addCheck (types.attrsOf unitOption) checkTunnel;
description = ''
Each attribute in this set specifies an option in the
<literal>[Tunnel]</literal> section of the unit. See
<citerefentry><refentrytitle>systemd.netdev</refentrytitle>
<manvolnum>5</manvolnum></citerefentry> for details.
'';
};
peerConfig = mkOption {
default = {};
example = { Name = "veth2"; };
type = types.addCheck (types.attrsOf unitOption) checkPeer;
description = ''
Each attribute in this set specifies an option in the
<literal>[Peer]</literal> section of the unit. See
<citerefentry><refentrytitle>systemd.netdev</refentrytitle>
<manvolnum>5</manvolnum></citerefentry> for details.
'';
};
tunConfig = mkOption {
default = {};
example = { User = "openvpn"; };
type = types.addCheck (types.attrsOf unitOption) checkTun;
description = ''
Each attribute in this set specifies an option in the
<literal>[Tun]</literal> section of the unit. See
<citerefentry><refentrytitle>systemd.netdev</refentrytitle>
<manvolnum>5</manvolnum></citerefentry> for details.
'';
};
tapConfig = mkOption {
default = {};
example = { User = "openvpn"; };
type = types.addCheck (types.attrsOf unitOption) checkTap;
description = ''
Each attribute in this set specifies an option in the
<literal>[Tap]</literal> section of the unit. See
<citerefentry><refentrytitle>systemd.netdev</refentrytitle>
<manvolnum>5</manvolnum></citerefentry> for details.
'';
};
bondConfig = mkOption {
default = {};
example = { Mode = "802.3ad"; };
type = types.addCheck (types.attrsOf unitOption) checkBond;
description = ''
Each attribute in this set specifies an option in the
<literal>[Bond]</literal> section of the unit. See
<citerefentry><refentrytitle>systemd.netdev</refentrytitle>
<manvolnum>5</manvolnum></citerefentry> for details.
'';
};
};
addressOptions = {
addressConfig = mkOption {
default = {};
example = { Address = "192.168.0.100/24"; };
type = types.addCheck (types.attrsOf unitOption) checkAddress;
description = ''
Each attribute in this set specifies an option in the
<literal>[Address]</literal> section of the unit. See
<citerefentry><refentrytitle>systemd.network</refentrytitle>
<manvolnum>5</manvolnum></citerefentry> for details.
'';
};
};
routeOptions = {
routeConfig = mkOption {
default = {};
example = { Gateway = "192.168.0.1"; };
type = types.addCheck (types.attrsOf unitOption) checkRoute;
description = ''
Each attribute in this set specifies an option in the
<literal>[Route]</literal> section of the unit. See
<citerefentry><refentrytitle>systemd.network</refentrytitle>
<manvolnum>5</manvolnum></citerefentry> for details.
'';
};
};
networkOptions = commonNetworkOptions // {
networkConfig = mkOption {
default = {};
example = { Description = "My Network"; };
type = types.addCheck (types.attrsOf unitOption) checkNetwork;
description = ''
Each attribute in this set specifies an option in the
<literal>[Network]</literal> section of the unit. See
<citerefentry><refentrytitle>systemd.network</refentrytitle>
<manvolnum>5</manvolnum></citerefentry> for details.
'';
};
dhcpConfig = mkOption {
default = {};
example = { UseDNS = true; UseRoutes = true; };
type = types.addCheck (types.attrsOf unitOption) checkDhcp;
description = ''
Each attribute in this set specifies an option in the
<literal>[DHCP]</literal> section of the unit. See
<citerefentry><refentrytitle>systemd.network</refentrytitle>
<manvolnum>5</manvolnum></citerefentry> for details.
'';
};
dhcpServerConfig = mkOption {
default = {};
example = { PoolOffset = 50; EmitDNS = false; };
type = types.addCheck (types.attrsOf unitOption) checkDhcpServer;
description = ''
Each attribute in this set specifies an option in the
<literal>[DHCPServer]</literal> section of the unit. See
<citerefentry><refentrytitle>systemd.network</refentrytitle>
<manvolnum>5</manvolnum></citerefentry> for details.
'';
};
name = mkOption {
type = types.nullOr types.str;
default = null;
description = ''
The name of the network interface to match against.
'';
};
DHCP = mkOption {
type = types.nullOr types.str;
default = null;
description = ''
Whether to enable DHCP on the interfaces matched.
'';
};
domains = mkOption {
type = types.nullOr (types.listOf types.str);
default = null;
description = ''
A list of domains to pass to the network config.
'';
};
address = mkOption {
default = [ ];
type = types.listOf types.str;
description = ''
A list of addresses to be added to the network section of the
unit. See <citerefentry><refentrytitle>systemd.network</refentrytitle>
<manvolnum>5</manvolnum></citerefentry> for details.
'';
};
gateway = mkOption {
default = [ ];
type = types.listOf types.str;
description = ''
A list of gateways to be added to the network section of the
unit. See <citerefentry><refentrytitle>systemd.network</refentrytitle>
<manvolnum>5</manvolnum></citerefentry> for details.
'';
};
dns = mkOption {
default = [ ];
type = types.listOf types.str;
description = ''
A list of dns servers to be added to the network section of the
unit. See <citerefentry><refentrytitle>systemd.network</refentrytitle>
<manvolnum>5</manvolnum></citerefentry> for details.
'';
};
ntp = mkOption {
default = [ ];
type = types.listOf types.str;
description = ''
A list of ntp servers to be added to the network section of the
unit. See <citerefentry><refentrytitle>systemd.network</refentrytitle>
<manvolnum>5</manvolnum></citerefentry> for details.
'';
};
vlan = mkOption {
default = [ ];
type = types.listOf types.str;
description = ''
A list of vlan interfaces to be added to the network section of the
unit. See <citerefentry><refentrytitle>systemd.network</refentrytitle>
<manvolnum>5</manvolnum></citerefentry> for details.
'';
};
macvlan = mkOption {
default = [ ];
type = types.listOf types.str;
description = ''
A list of macvlan interfaces to be added to the network section of the
unit. See <citerefentry><refentrytitle>systemd.network</refentrytitle>
<manvolnum>5</manvolnum></citerefentry> for details.
'';
};
vxlan = mkOption {
default = [ ];
type = types.listOf types.str;
description = ''
A list of vxlan interfaces to be added to the network section of the
unit. See <citerefentry><refentrytitle>systemd.network</refentrytitle>
<manvolnum>5</manvolnum></citerefentry> for details.
'';
};
tunnel = mkOption {
default = [ ];
type = types.listOf types.str;
description = ''
A list of tunnel interfaces to be added to the network section of the
unit. See <citerefentry><refentrytitle>systemd.network</refentrytitle>
<manvolnum>5</manvolnum></citerefentry> for details.
'';
};
addresses = mkOption {
default = [ ];
type = types.listOf types.optionSet;
options = [ addressOptions ];
description = ''
A list of address sections to be added to the unit. See
<citerefentry><refentrytitle>systemd.network</refentrytitle>
<manvolnum>5</manvolnum></citerefentry> for details.
'';
};
routes = mkOption {
default = [ ];
type = types.listOf types.optionSet;
options = [ routeOptions ];
description = ''
A list of route sections to be added to the unit. See
<citerefentry><refentrytitle>systemd.network</refentrytitle>
<manvolnum>5</manvolnum></citerefentry> for details.
'';
};
};
networkConfig = { name, config, ... }: {
config = {
matchConfig = optionalAttrs (config.name != null) {
Name = config.name;
};
networkConfig = optionalAttrs (config.DHCP != null) {
DHCP = config.DHCP;
} // optionalAttrs (config.domains != null) {
Domains = concatStringsSep " " config.domains;
};
};
};
commonMatchText = def: ''
[Match]
${attrsToSection def.matchConfig}
'';
linkToUnit = name: def:
{ inherit (def) enable;
text = commonMatchText def +
''
[Link]
${attrsToSection def.linkConfig}
'';
};
netdevToUnit = name: def:
{ inherit (def) enable;
text = commonMatchText def +
''
[NetDev]
${attrsToSection def.netdevConfig}
${optionalString (def.vlanConfig != { }) ''
[VLAN]
${attrsToSection def.vlanConfig}
''}
${optionalString (def.macvlanConfig != { }) ''
[MACVLAN]
${attrsToSection def.macvlanConfig}
''}
${optionalString (def.vxlanConfig != { }) ''
[VXLAN]
${attrsToSection def.vxlanConfig}
''}
${optionalString (def.tunnelConfig != { }) ''
[Tunnel]
${attrsToSection def.tunnelConfig}
''}
${optionalString (def.peerConfig != { }) ''
[Peer]
${attrsToSection def.peerConfig}
''}
${optionalString (def.tunConfig != { }) ''
[Tun]
${attrsToSection def.tunConfig}
''}
${optionalString (def.tapConfig != { }) ''
[Tap]
${attrsToSection def.tapConfig}
''}
${optionalString (def.bondConfig != { }) ''
[Bond]
${attrsToSection def.bondConfig}
''}
'';
};
networkToUnit = name: def:
{ inherit (def) enable;
text = commonMatchText def +
''
[Network]
${attrsToSection def.networkConfig}
${concatStringsSep "\n" (map (s: "Address=${s}") def.address)}
${concatStringsSep "\n" (map (s: "Gateway=${s}") def.gateway)}
${concatStringsSep "\n" (map (s: "DNS=${s}") def.dns)}
${concatStringsSep "\n" (map (s: "NTP=${s}") def.ntp)}
${concatStringsSep "\n" (map (s: "VLAN=${s}") def.vlan)}
${concatStringsSep "\n" (map (s: "MACVLAN=${s}") def.macvlan)}
${concatStringsSep "\n" (map (s: "VXLAN=${s}") def.vxlan)}
${concatStringsSep "\n" (map (s: "Tunnel=${s}") def.tunnel)}
${optionalString (def.dhcpConfig != { }) ''
[DHCP]
${attrsToSection def.dhcpConfig}
''}
${optionalString (def.dhcpServerConfig != { }) ''
[DHCPServer]
${attrsToSection def.dhcpServerConfig}
''}
${flip concatMapStrings def.addresses (x: ''
[Address]
${attrsToSection x.addressConfig}
'')}
${flip concatMapStrings def.routes (x: ''
[Route]
${attrsToSection x.routeConfig}
'')}
'';
};
in
{
options = {
systemd.network.enable = mkOption {
default = false;
type = types.bool;
description = ''
Whether to enable networkd or not.
'';
};
systemd.network.links = mkOption {
default = {};
type = types.attrsOf types.optionSet;
options = [ linkOptions ];
description = "Definition of systemd network links.";
};
systemd.network.netdevs = mkOption {
default = {};
type = types.attrsOf types.optionSet;
options = [ netdevOptions ];
description = "Definition of systemd network devices.";
};
systemd.network.networks = mkOption {
default = {};
type = types.attrsOf types.optionSet;
options = [ networkOptions networkConfig ];
description = "Definition of systemd networks.";
};
systemd.network.units = mkOption {
description = "Definition of networkd units.";
default = {};
type = types.attrsOf types.optionSet;
options = { name, config, ... }:
{ options = concreteUnitOptions;
config = {
unit = mkDefault (makeUnit name config);
};
};
};
};
config = mkIf config.systemd.network.enable {
systemd.additionalUpstreamSystemUnits =
[ "systemd-networkd.service" "systemd-networkd-wait-online.service" ];
systemd.network.units =
mapAttrs' (n: v: nameValuePair "${n}.link" (linkToUnit n v)) cfg.links
// mapAttrs' (n: v: nameValuePair "${n}.netdev" (netdevToUnit n v)) cfg.netdevs
// mapAttrs' (n: v: nameValuePair "${n}.network" (networkToUnit n v)) cfg.networks;
environment.etc."systemd/network".source =
generateUnits "network" cfg.units [] [];
systemd.services.systemd-networkd = {
wantedBy = [ "multi-user.target" ];
before = [ "network-interfaces.target" ];
restartTriggers = [ config.environment.etc."systemd/network".source ];
};
systemd.services.systemd-networkd-wait-online = {
before = [ "network-online.target" "ip-up.target" ];
wantedBy = [ "network-online.target" "ip-up.target" ];
};
systemd.services."systemd-network-wait-online@" = {
description = "Wait for Network Interface %I to be Configured";
conflicts = [ "shutdown.target" ];
requisite = [ "systemd-networkd.service" ];
after = [ "systemd-networkd.service" ];
serviceConfig = {
Type = "oneshot";
RemainAfterExit = true;
ExecStart = "${config.systemd.package}/lib/systemd/systemd-networkd-wait-online -i %I";
};
};
services.resolved.enable = mkDefault true;
services.timesyncd.enable = mkDefault config.services.ntp.enable;
};
}
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