nixpkgs/nixos/modules/system/boot/networkd.nix
Profpatsch bb797c1390 networking.networkd: adjust autmatic mapping of bonds
Since the bonds interface changed to a lot more possible values we create a
mapping of kernel bond attribute names and values to networkd attributes.
Those match for the most part, but have to transformed slightly.

There is also an assert that unknown options won’t slip through silently.
2017-02-16 21:24:40 +01:00

705 lines
22 KiB
Nix

{ 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" "GratuitousARP"
])
(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.
'';
};
extraConfig = mkOption {
default = "";
type = types.lines;
description = "Extra configuration append to unit";
};
};
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 = {
options = {
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 = {
options = {
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 = with types; listOf (submodule 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 = with types; listOf (submodule 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}
${def.extraConfig}
'';
};
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}
''}
${def.extraConfig}
'';
};
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}
'')}
${def.extraConfig}
'';
};
unitFiles = map (name: {
target = "systemd/network/${name}";
source = "${cfg.units.${name}.unit}/${name}";
}) (attrNames cfg.units);
in
{
options = {
systemd.network.enable = mkOption {
default = false;
type = types.bool;
description = ''
Whether to enable networkd or not.
'';
};
systemd.network.links = mkOption {
default = {};
type = with types; attrsOf (submodule [ { options = linkOptions; } ]);
description = "Definition of systemd network links.";
};
systemd.network.netdevs = mkOption {
default = {};
type = with types; attrsOf (submodule [ { options = netdevOptions; } ]);
description = "Definition of systemd network devices.";
};
systemd.network.networks = mkOption {
default = {};
type = with types; attrsOf (submodule [ { options = networkOptions; } networkConfig ]);
description = "Definition of systemd networks.";
};
systemd.network.units = mkOption {
description = "Definition of networkd units.";
default = {};
type = with types; attrsOf (submodule (
{ name, config, ... }:
{ options = concreteUnitOptions;
config = {
unit = mkDefault (makeUnit name config);
};
}));
};
};
config = mkIf config.systemd.network.enable {
systemd.additionalUpstreamSystemUnits = [
"systemd-networkd.service" "systemd-networkd-wait-online.service"
"org.freedesktop.network1.busname"
];
systemd.network.units = mapAttrs' (n: v: nameValuePair "${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 = unitFiles;
systemd.services.systemd-networkd = {
wantedBy = [ "multi-user.target" ];
restartTriggers = map (f: f.source) (unitFiles);
};
systemd.services.systemd-networkd-wait-online = {
wantedBy = [ "network-online.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;
};
}