{ 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" "IPv4LL" "IPv4LLRoute" "LLMNR" "Domains" "Bridge" "Bond" ]) (assertValueOneOf "DHCP" ["both" "none" "v4" "v6"]) (assertValueOneOf "DHCPServer" 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) ]; commonNetworkOptions = { enable = mkOption { default = true; type = types.bool; description = '' Whether to manage network configuration using systemd-network. ''; }; matchConfig = mkOption { default = {}; example = { Name = "eth0"; }; type = types.attrsOf unitOption; description = '' Each attribute in this set specifies an option in the [Match] section of the unit. See systemd.link5 systemd.netdev5 systemd.network5 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 [Link] section of the unit. See systemd.link 5 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 [Netdev] section of the unit. See systemd.netdev 5 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 [VLAN] section of the unit. See systemd.netdev 5 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 [MACVLAN] section of the unit. See systemd.netdev 5 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 [VXLAN] section of the unit. See systemd.netdev 5 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 [Tunnel] section of the unit. See systemd.netdev 5 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 [Peer] section of the unit. See systemd.netdev 5 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 [Tun] section of the unit. See systemd.netdev 5 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 [Tap] section of the unit. See systemd.netdev 5 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 [Bond] section of the unit. See systemd.netdev 5 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 [Address] section of the unit. See systemd.network 5 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 [Route] section of the unit. See systemd.network 5 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 [Network] section of the unit. See systemd.network 5 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 [DHCP] section of the unit. See systemd.network 5 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 systemd.network 5 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 systemd.network 5 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 systemd.network 5 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 systemd.network 5 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 systemd.network 5 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 systemd.network 5 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 systemd.network 5 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 systemd.network 5 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 systemd.network 5 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 systemd.network 5 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} ''} ${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 [] []; users.extraUsers.systemd-network.uid = config.ids.uids.systemd-network; users.extraGroups.systemd-network.gid = config.ids.gids.systemd-network; 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; }; }