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076f59fd54
So we don't depend on addresses configured for an interface or network-setup.service existing anymore. Fixes #349882
835 lines
31 KiB
Nix
835 lines
31 KiB
Nix
{
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config,
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lib,
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pkgs,
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utils,
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...
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}:
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with utils;
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with lib;
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let
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cfg = config.networking;
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interfaces = attrValues cfg.interfaces;
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slaves =
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concatMap (i: i.interfaces) (attrValues cfg.bonds)
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++ concatMap (i: i.interfaces) (attrValues cfg.bridges)
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++ concatMap (i: attrNames (filterAttrs (_: config: config.type != "internal") i.interfaces)) (
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attrValues cfg.vswitches
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)
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++ concatMap (i: [ i.interface ]) (attrValues cfg.macvlans)
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++ concatMap (i: [ i.interface ]) (attrValues cfg.vlans);
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# We must escape interfaces due to the systemd interpretation
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subsystemDevice = interface: "sys-subsystem-net-devices-${escapeSystemdPath interface}.device";
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interfaceIps = i: i.ipv4.addresses ++ optionals cfg.enableIPv6 i.ipv6.addresses;
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destroyBond = i: ''
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while true; do
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UPDATED=1
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SLAVES=$(ip link | grep 'master ${i}' | awk -F: '{print $2}')
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for I in $SLAVES; do
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UPDATED=0
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ip link set dev "$I" nomaster
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done
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[ "$UPDATED" -eq "1" ] && break
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done
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ip link set dev "${i}" down 2>/dev/null || true
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ip link del dev "${i}" 2>/dev/null || true
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'';
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formatIpArgs =
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args:
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lib.pipe args [
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(lib.filterAttrs (n: v: v != null))
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(lib.mapAttrsToList (n: v: "${n} ${toString v}"))
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(lib.concatStringsSep " ")
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];
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# warn that these attributes are deprecated (2017-2-2)
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# Should be removed in the release after next
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bondDeprecation = rec {
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deprecated = [
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"lacp_rate"
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"miimon"
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"mode"
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"xmit_hash_policy"
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];
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filterDeprecated =
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bond: (filterAttrs (attrName: attr: elem attrName deprecated && attr != null) bond);
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};
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bondWarnings =
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let
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oneBondWarnings =
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bondName: bond: mapAttrsToList (bondText bondName) (bondDeprecation.filterDeprecated bond);
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bondText =
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bondName: optName: _:
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"${bondName}.${optName} is deprecated, use ${bondName}.driverOptions";
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in
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{
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warnings = flatten (mapAttrsToList oneBondWarnings cfg.bonds);
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};
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normalConfig = {
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systemd.network.links =
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let
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createNetworkLink =
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i:
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nameValuePair "40-${i.name}" {
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matchConfig.OriginalName = i.name;
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linkConfig =
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optionalAttrs (i.macAddress != null) {
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MACAddress = i.macAddress;
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}
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// optionalAttrs (i.mtu != null) {
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MTUBytes = toString i.mtu;
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};
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};
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in
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listToAttrs (map createNetworkLink interfaces);
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systemd.services =
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let
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deviceDependency =
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dev:
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# Use systemd service if we manage device creation, else
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# trust udev when not in a container
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if (dev == null || dev == "lo") then
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[ ]
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else if
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(hasAttr dev (filterAttrs (k: v: v.virtual) cfg.interfaces))
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|| (hasAttr dev cfg.bridges)
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|| (hasAttr dev cfg.bonds)
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|| (hasAttr dev cfg.macvlans)
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|| (hasAttr dev cfg.sits)
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|| (hasAttr dev cfg.ipips)
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|| (hasAttr dev cfg.vlans)
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|| (hasAttr dev cfg.greTunnels)
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|| (hasAttr dev cfg.vswitches)
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then
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[ "${dev}-netdev.service" ]
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else
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optional (!config.boot.isContainer) (subsystemDevice dev);
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hasDefaultGatewaySet =
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(cfg.defaultGateway != null && cfg.defaultGateway.address != "")
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|| (cfg.enableIPv6 && cfg.defaultGateway6 != null && cfg.defaultGateway6.address != "");
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needNetworkSetup =
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cfg.resolvconf.enable || cfg.defaultGateway != null || cfg.defaultGateway6 != null;
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networkLocalCommands = lib.mkIf needNetworkSetup {
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after = [ "network-setup.service" ];
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bindsTo = [ "network-setup.service" ];
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};
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networkSetup = lib.mkIf needNetworkSetup {
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description = "Networking Setup";
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after = [ "network-pre.target" ];
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before = [
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"network.target"
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"shutdown.target"
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];
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wants = [ "network.target" ];
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# exclude bridges from the partOf relationship to fix container networking bug #47210
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partOf = map (i: "network-addresses-${i.name}.service") (
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filter (i: !(hasAttr i.name cfg.bridges)) interfaces
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);
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conflicts = [ "shutdown.target" ];
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wantedBy = [ "multi-user.target" ] ++ optional hasDefaultGatewaySet "network-online.target";
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unitConfig.ConditionCapability = "CAP_NET_ADMIN";
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path = [ pkgs.iproute2 ];
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serviceConfig = {
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Type = "oneshot";
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RemainAfterExit = true;
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};
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unitConfig.DefaultDependencies = false;
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script = ''
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${optionalString config.networking.resolvconf.enable ''
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# Set the static DNS configuration, if given.
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${pkgs.openresolv}/sbin/resolvconf -m 1 -a static <<EOF
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${optionalString (cfg.nameservers != [ ] && cfg.domain != null) ''
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domain ${cfg.domain}
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''}
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${optionalString (cfg.search != [ ]) ("search " + concatStringsSep " " cfg.search)}
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${flip concatMapStrings cfg.nameservers (ns: ''
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nameserver ${ns}
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'')}
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EOF
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''}
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# Set the default gateway
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${flip concatMapStrings
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[
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{
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version = "-4";
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gateway = cfg.defaultGateway;
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}
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{
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version = "-6";
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gateway = cfg.defaultGateway6;
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}
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]
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(
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{ version, gateway }:
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optionalString (gateway != null && gateway.address != "") ''
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${optionalString (gateway.interface != null) ''
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ip ${version} route replace ${gateway.address} proto static ${
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formatIpArgs {
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metric = gateway.metric;
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dev = gateway.interface;
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}
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}
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''}
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ip ${version} route replace default proto static ${
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formatIpArgs {
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metric = gateway.metric;
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via = gateway.address;
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window = cfg.defaultGatewayWindowSize;
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dev = gateway.interface;
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src = gateway.source;
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}
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}
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''
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)
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}
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'';
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};
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# For each interface <foo>, create a job ‘network-addresses-<foo>.service"
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# that performs static address configuration. It has a "wants"
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# dependency on ‘<foo>.service’, which is supposed to create
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# the interface and need not exist (i.e. for hardware
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# interfaces). It has a binds-to dependency on the actual
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# network device, so it only gets started after the interface
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# has appeared, and it's stopped when the interface
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# disappears.
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configureAddrs =
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i:
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let
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ips = interfaceIps i;
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in
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nameValuePair "network-addresses-${i.name}" {
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description = "Address configuration of ${i.name}";
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wantedBy = [
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"network-setup.service"
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"network.target"
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];
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# order before network-setup because the routes that are configured
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# there may need ip addresses configured
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before = [ "network-setup.service" ];
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bindsTo = deviceDependency i.name;
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after = [ "network-pre.target" ] ++ (deviceDependency i.name);
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serviceConfig.Type = "oneshot";
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serviceConfig.RemainAfterExit = true;
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# Restart rather than stop+start this unit to prevent the
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# network from dying during switch-to-configuration.
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stopIfChanged = false;
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path = [ pkgs.iproute2 ];
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script = ''
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state="/run/nixos/network/addresses/${i.name}"
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mkdir -p "$(dirname "$state")"
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ip link set dev "${i.name}" up
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${flip concatMapStrings ips (
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ip:
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let
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cidr = "${ip.address}/${toString ip.prefixLength}";
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in
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''
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echo "${cidr}" >> $state
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echo -n "adding address ${cidr}... "
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if out=$(ip addr replace "${cidr}" dev "${i.name}" nodad 2>&1); then
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echo "done"
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else
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echo "'ip addr replace \"${cidr}\" dev \"${i.name}\"' nodad failed: $out"
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exit 1
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fi
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''
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)}
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state="/run/nixos/network/routes/${i.name}"
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mkdir -p "$(dirname "$state")"
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${flip concatMapStrings (i.ipv4.routes ++ i.ipv6.routes) (
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route:
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let
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cidr = "${route.address}/${toString route.prefixLength}";
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via = optionalString (route.via != null) ''via "${route.via}"'';
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options = concatStrings (mapAttrsToList (name: val: "${name} ${val} ") route.options);
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type = toString route.type;
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in
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''
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echo "${cidr}" >> $state
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echo -n "adding route ${cidr}... "
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if out=$(ip route add ${type} "${cidr}" ${options} ${via} dev "${i.name}" proto static 2>&1); then
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echo "done"
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elif ! echo "$out" | grep "File exists" >/dev/null 2>&1; then
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echo "'ip route add ${type} \"${cidr}\" ${options} ${via} dev \"${i.name}\"' failed: $out"
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exit 1
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fi
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''
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)}
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'';
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preStop = ''
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state="/run/nixos/network/routes/${i.name}"
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if [ -e "$state" ]; then
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while read -r cidr; do
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echo -n "deleting route $cidr... "
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ip route del "$cidr" dev "${i.name}" >/dev/null 2>&1 && echo "done" || echo "failed"
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done < "$state"
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rm -f "$state"
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fi
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state="/run/nixos/network/addresses/${i.name}"
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if [ -e "$state" ]; then
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while read -r cidr; do
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echo -n "deleting address $cidr... "
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ip addr del "$cidr" dev "${i.name}" >/dev/null 2>&1 && echo "done" || echo "failed"
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done < "$state"
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rm -f "$state"
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fi
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'';
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};
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createTunDevice =
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i:
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nameValuePair "${i.name}-netdev" {
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description = "Virtual Network Interface ${i.name}";
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bindsTo = optional (!config.boot.isContainer) "dev-net-tun.device";
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after = optional (!config.boot.isContainer) "dev-net-tun.device" ++ [ "network-pre.target" ];
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wantedBy = [
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"network.target"
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"network-setup.service"
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(subsystemDevice i.name)
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];
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before = [ "network-setup.service" ];
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path = [ pkgs.iproute2 ];
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serviceConfig = {
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Type = "oneshot";
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RemainAfterExit = true;
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};
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script = ''
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ip tuntap add dev "${i.name}" mode "${i.virtualType}" user "${i.virtualOwner}"
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'';
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postStop = ''
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ip link del dev ${i.name} || true
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'';
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};
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createBridgeDevice =
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n: v:
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nameValuePair "${n}-netdev" (
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let
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deps = concatLists (map deviceDependency v.interfaces);
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in
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{
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description = "Bridge Interface ${n}";
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wantedBy = [
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"network.target"
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"network-setup.service"
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(subsystemDevice n)
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];
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bindsTo = deps ++ optional v.rstp "mstpd.service";
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partOf = [ "network-setup.service" ] ++ optional v.rstp "mstpd.service";
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after = [
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"network-pre.target"
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]
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++ deps
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++ optional v.rstp "mstpd.service"
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++ map (i: "network-addresses-${i}.service") v.interfaces;
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before = [ "network-setup.service" ];
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serviceConfig.Type = "oneshot";
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serviceConfig.RemainAfterExit = true;
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path = [ pkgs.iproute2 ];
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script = ''
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# Remove Dead Interfaces
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echo "Removing old bridge ${n}..."
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ip link show dev "${n}" >/dev/null 2>&1 && ip link del dev "${n}"
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|
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echo "Adding bridge ${n}..."
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ip link add name "${n}" type bridge
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|
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# Enslave child interfaces
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${flip concatMapStrings v.interfaces (i: ''
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ip link set dev "${i}" master "${n}"
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ip link set dev "${i}" up
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'')}
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# Save list of enslaved interfaces
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echo "${
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flip concatMapStrings v.interfaces (i: ''
|
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${i}
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'')
|
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}" > /run/${n}.interfaces
|
||
|
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${optionalString config.virtualisation.libvirtd.enable ''
|
||
# Enslave dynamically added interfaces which may be lost on nixos-rebuild
|
||
#
|
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# if `libvirtd.service` is not running, do not use `virsh` which would try activate it via 'libvirtd.socket' and thus start it out-of-order.
|
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# `libvirtd.service` will set up bridge interfaces when it will start normally.
|
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#
|
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if /run/current-system/systemd/bin/systemctl --quiet is-active 'libvirtd.service'; then
|
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for uri in qemu:///system lxc:///; do
|
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for dom in $(${pkgs.libvirt}/bin/virsh -c $uri list --name); do
|
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${pkgs.libvirt}/bin/virsh -c $uri dumpxml "$dom" | \
|
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${pkgs.xmlstarlet}/bin/xmlstarlet sel -t -m "//domain/devices/interface[@type='bridge'][source/@bridge='${n}'][target/@dev]" -v "concat('ip link set dev ',target/@dev,' master ',source/@bridge,';')" | \
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${pkgs.bash}/bin/bash
|
||
done
|
||
done
|
||
fi
|
||
''}
|
||
|
||
# Enable stp on the interface
|
||
${optionalString v.rstp ''
|
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echo 2 >/sys/class/net/${n}/bridge/stp_state
|
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''}
|
||
|
||
ip link set dev "${n}" up
|
||
'';
|
||
postStop = ''
|
||
ip link set dev "${n}" down || true
|
||
ip link del dev "${n}" || true
|
||
rm -f /run/${n}.interfaces
|
||
'';
|
||
reload = ''
|
||
# Un-enslave child interfaces (old list of interfaces)
|
||
for interface in `cat /run/${n}.interfaces`; do
|
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ip link set dev "$interface" nomaster up
|
||
done
|
||
|
||
# Enslave child interfaces (new list of interfaces)
|
||
${flip concatMapStrings v.interfaces (i: ''
|
||
ip link set dev "${i}" master "${n}"
|
||
ip link set dev "${i}" up
|
||
'')}
|
||
# Save list of enslaved interfaces
|
||
echo "${
|
||
flip concatMapStrings v.interfaces (i: ''
|
||
${i}
|
||
'')
|
||
}" > /run/${n}.interfaces
|
||
|
||
# (Un-)set stp on the bridge
|
||
echo ${if v.rstp then "2" else "0"} > /sys/class/net/${n}/bridge/stp_state
|
||
'';
|
||
reloadIfChanged = true;
|
||
}
|
||
);
|
||
|
||
createVswitchDevice =
|
||
n: v:
|
||
nameValuePair "${n}-netdev" (
|
||
let
|
||
deps = concatLists (
|
||
map deviceDependency (attrNames (filterAttrs (_: config: config.type != "internal") v.interfaces))
|
||
);
|
||
internalConfigs = map (i: "network-addresses-${i}.service") (
|
||
attrNames (filterAttrs (_: config: config.type == "internal") v.interfaces)
|
||
);
|
||
ofRules = pkgs.writeText "vswitch-${n}-openFlowRules" v.openFlowRules;
|
||
in
|
||
{
|
||
description = "Open vSwitch Interface ${n}";
|
||
wantedBy = [
|
||
"network.target"
|
||
"network-setup.service"
|
||
(subsystemDevice n)
|
||
]
|
||
++ internalConfigs;
|
||
# before = [ "network-setup.service" ];
|
||
# should work without internalConfigs dependencies because address/link configuration depends
|
||
# on the device, which is created by ovs-vswitchd with type=internal, but it does not...
|
||
before = [ "network-setup.service" ] ++ internalConfigs;
|
||
partOf = [ "network-setup.service" ]; # shutdown the bridge when network is shutdown
|
||
bindsTo = [ "ovs-vswitchd.service" ]; # requires ovs-vswitchd to be alive at all times
|
||
after = [
|
||
"network-pre.target"
|
||
"ovs-vswitchd.service"
|
||
]
|
||
++ deps; # start switch after physical interfaces and vswitch daemon
|
||
wants = deps; # if one or more interface fails, the switch should continue to run
|
||
serviceConfig.Type = "oneshot";
|
||
serviceConfig.RemainAfterExit = true;
|
||
path = [
|
||
pkgs.iproute2
|
||
config.virtualisation.vswitch.package
|
||
];
|
||
preStart = ''
|
||
echo "Resetting Open vSwitch ${n}..."
|
||
ovs-vsctl --if-exists del-br ${n} -- add-br ${n} \
|
||
-- set bridge ${n} protocols=${concatStringsSep "," v.supportedOpenFlowVersions}
|
||
'';
|
||
script = ''
|
||
echo "Configuring Open vSwitch ${n}..."
|
||
ovs-vsctl ${
|
||
concatStrings (
|
||
mapAttrsToList (
|
||
name: config:
|
||
" -- add-port ${n} ${name}" + optionalString (config.vlan != null) " tag=${toString config.vlan}"
|
||
) v.interfaces
|
||
)
|
||
} \
|
||
${
|
||
concatStrings (
|
||
mapAttrsToList (
|
||
name: config: optionalString (config.type != null) " -- set interface ${name} type=${config.type}"
|
||
) v.interfaces
|
||
)
|
||
} \
|
||
${concatMapStrings (x: " -- set-controller ${n} " + x) v.controllers} \
|
||
${concatMapStrings (x: " -- " + x) (splitString "\n" v.extraOvsctlCmds)}
|
||
|
||
|
||
echo "Adding OpenFlow rules for Open vSwitch ${n}..."
|
||
ovs-ofctl --protocols=${v.openFlowVersion} add-flows ${n} ${ofRules}
|
||
'';
|
||
postStop = ''
|
||
echo "Cleaning Open vSwitch ${n}"
|
||
echo "Shutting down internal ${n} interface"
|
||
ip link set dev ${n} down || true
|
||
echo "Deleting flows for ${n}"
|
||
ovs-ofctl --protocols=${v.openFlowVersion} del-flows ${n} || true
|
||
echo "Deleting Open vSwitch ${n}"
|
||
ovs-vsctl --if-exists del-br ${n} || true
|
||
'';
|
||
}
|
||
);
|
||
|
||
createBondDevice =
|
||
n: v:
|
||
nameValuePair "${n}-netdev" (
|
||
let
|
||
deps = concatLists (map deviceDependency v.interfaces);
|
||
in
|
||
{
|
||
description = "Bond Interface ${n}";
|
||
wantedBy = [
|
||
"network.target"
|
||
"network-setup.service"
|
||
(subsystemDevice n)
|
||
];
|
||
bindsTo = deps;
|
||
after = [ "network-pre.target" ] ++ deps ++ map (i: "network-addresses-${i}.service") v.interfaces;
|
||
before = [ "network-setup.service" ];
|
||
serviceConfig.Type = "oneshot";
|
||
serviceConfig.RemainAfterExit = true;
|
||
path = [
|
||
pkgs.iproute2
|
||
pkgs.gawk
|
||
];
|
||
script = ''
|
||
echo "Destroying old bond ${n}..."
|
||
${destroyBond n}
|
||
|
||
echo "Creating new bond ${n}..."
|
||
ip link add name "${n}" type bond \
|
||
${
|
||
let
|
||
opts = (mapAttrs (const toString) (bondDeprecation.filterDeprecated v)) // v.driverOptions;
|
||
in
|
||
concatStringsSep "\n" (mapAttrsToList (set: val: " ${set} ${val} \\") opts)
|
||
}
|
||
|
||
# !!! There must be a better way to wait for the interface
|
||
while [ ! -d "/sys/class/net/${n}" ]; do sleep 0.1; done;
|
||
|
||
# Bring up the bond and enslave the specified interfaces
|
||
ip link set dev "${n}" up
|
||
${flip concatMapStrings v.interfaces (i: ''
|
||
ip link set dev "${i}" down
|
||
ip link set dev "${i}" master "${n}"
|
||
'')}
|
||
'';
|
||
postStop = destroyBond n;
|
||
}
|
||
);
|
||
|
||
createMacvlanDevice =
|
||
n: v:
|
||
nameValuePair "${n}-netdev" (
|
||
let
|
||
deps = deviceDependency v.interface;
|
||
in
|
||
{
|
||
description = "MACVLAN Interface ${n}";
|
||
wantedBy = [
|
||
"network.target"
|
||
"network-setup.service"
|
||
(subsystemDevice n)
|
||
];
|
||
bindsTo = deps;
|
||
after = [ "network-pre.target" ] ++ deps;
|
||
before = [ "network-setup.service" ];
|
||
serviceConfig.Type = "oneshot";
|
||
serviceConfig.RemainAfterExit = true;
|
||
path = [ pkgs.iproute2 ];
|
||
script = ''
|
||
# Remove Dead Interfaces
|
||
ip link show dev "${n}" >/dev/null 2>&1 && ip link delete dev "${n}"
|
||
ip link add link "${v.interface}" name "${n}" type macvlan \
|
||
${optionalString (v.mode != null) "mode ${v.mode}"}
|
||
ip link set dev "${n}" up
|
||
'';
|
||
postStop = ''
|
||
ip link delete dev "${n}" || true
|
||
'';
|
||
}
|
||
);
|
||
|
||
createFouEncapsulation =
|
||
n: v:
|
||
nameValuePair "${n}-fou-encap" (
|
||
let
|
||
# if we have a device to bind to we can wait for its addresses to be
|
||
# configured, otherwise external sequencing is required.
|
||
deps = optionals (v.local != null && v.local.dev != null) (
|
||
deviceDependency v.local.dev ++ [ "network-addresses-${v.local.dev}.service" ]
|
||
);
|
||
fouSpec = "port ${toString v.port} ${
|
||
if v.protocol != null then "ipproto ${toString v.protocol}" else "gue"
|
||
} ${
|
||
optionalString (v.local != null)
|
||
"local ${escapeShellArg v.local.address} ${
|
||
optionalString (v.local.dev != null) "dev ${escapeShellArg v.local.dev}"
|
||
}"
|
||
}";
|
||
in
|
||
{
|
||
description = "FOU endpoint ${n}";
|
||
wantedBy = [
|
||
"network.target"
|
||
"network-setup.service"
|
||
(subsystemDevice n)
|
||
];
|
||
bindsTo = deps;
|
||
after = [ "network-pre.target" ] ++ deps;
|
||
before = [ "network-setup.service" ];
|
||
serviceConfig.Type = "oneshot";
|
||
serviceConfig.RemainAfterExit = true;
|
||
path = [ pkgs.iproute2 ];
|
||
script = ''
|
||
# always remove previous incarnation since show can't filter
|
||
ip fou del ${fouSpec} >/dev/null 2>&1 || true
|
||
ip fou add ${fouSpec}
|
||
'';
|
||
postStop = ''
|
||
ip fou del ${fouSpec} || true
|
||
'';
|
||
}
|
||
);
|
||
|
||
createSitDevice =
|
||
n: v:
|
||
nameValuePair "${n}-netdev" (
|
||
let
|
||
deps = deviceDependency v.dev;
|
||
in
|
||
{
|
||
description = "IPv6 in IPv4 Tunnel Interface ${n}";
|
||
wantedBy = [
|
||
"network.target"
|
||
"network-setup.service"
|
||
(subsystemDevice n)
|
||
];
|
||
bindsTo = deps;
|
||
after = [ "network-pre.target" ] ++ deps;
|
||
before = [ "network-setup.service" ];
|
||
serviceConfig.Type = "oneshot";
|
||
serviceConfig.RemainAfterExit = true;
|
||
path = [ pkgs.iproute2 ];
|
||
script = ''
|
||
# Remove Dead Interfaces
|
||
ip link show dev "${n}" >/dev/null 2>&1 && ip link delete dev "${n}"
|
||
ip link add name "${n}" type sit ${
|
||
formatIpArgs {
|
||
inherit (v)
|
||
remote
|
||
local
|
||
ttl
|
||
dev
|
||
;
|
||
encap = if v.encapsulation.type == "6in4" then null else v.encapsulation.type;
|
||
encap-dport = v.encapsulation.port;
|
||
encap-sport = v.encapsulation.sourcePort;
|
||
}
|
||
}
|
||
ip link set dev "${n}" up
|
||
'';
|
||
postStop = ''
|
||
ip link delete dev "${n}" || true
|
||
'';
|
||
}
|
||
);
|
||
|
||
createIpipDevice =
|
||
n: v:
|
||
nameValuePair "${n}-netdev" (
|
||
let
|
||
deps = deviceDependency v.dev;
|
||
in
|
||
{
|
||
description = "IP in IP Tunnel Interface ${n}";
|
||
wantedBy = [
|
||
"network.target"
|
||
"network-setup.service"
|
||
(subsystemDevice n)
|
||
];
|
||
bindsTo = deps;
|
||
after = [ "network-pre.target" ] ++ deps;
|
||
before = [ "network-setup.service" ];
|
||
serviceConfig.Type = "oneshot";
|
||
serviceConfig.RemainAfterExit = true;
|
||
path = [ pkgs.iproute2 ];
|
||
script = ''
|
||
# Remove Dead Interfaces
|
||
ip link show dev "${n}" >/dev/null 2>&1 && ip link delete dev "${n}"
|
||
ip tunnel add name "${n}" ${
|
||
formatIpArgs {
|
||
inherit (v)
|
||
remote
|
||
local
|
||
ttl
|
||
dev
|
||
;
|
||
mode =
|
||
{
|
||
"4in6" = "ipip6";
|
||
"ipip" = "ipip";
|
||
}
|
||
.${v.encapsulation.type};
|
||
encaplimit = if v.encapsulation.type == "ipip" then null else v.encapsulation.limit;
|
||
}
|
||
}
|
||
ip link set dev "${n}" up
|
||
'';
|
||
postStop = ''
|
||
ip link delete dev "${n}" || true
|
||
'';
|
||
}
|
||
);
|
||
|
||
createGreDevice =
|
||
n: v:
|
||
nameValuePair "${n}-netdev" (
|
||
let
|
||
deps = deviceDependency v.dev;
|
||
ttlarg = if lib.hasPrefix "ip6" v.type then "hoplimit" else "ttl";
|
||
in
|
||
{
|
||
description = "GRE Tunnel Interface ${n}";
|
||
wantedBy = [
|
||
"network.target"
|
||
"network-setup.service"
|
||
(subsystemDevice n)
|
||
];
|
||
bindsTo = deps;
|
||
after = [ "network-pre.target" ] ++ deps;
|
||
before = [ "network-setup.service" ];
|
||
serviceConfig.Type = "oneshot";
|
||
serviceConfig.RemainAfterExit = true;
|
||
path = [ pkgs.iproute2 ];
|
||
script = ''
|
||
# Remove Dead Interfaces
|
||
ip link show dev "${n}" >/dev/null 2>&1 && ip link delete dev "${n}"
|
||
ip link add name "${n}" type ${v.type} \
|
||
${optionalString (v.remote != null) "remote \"${v.remote}\""} \
|
||
${optionalString (v.local != null) "local \"${v.local}\""} \
|
||
${optionalString (v.ttl != null) "${ttlarg} ${toString v.ttl}"} \
|
||
${optionalString (v.dev != null) "dev \"${v.dev}\""}
|
||
ip link set dev "${n}" up
|
||
'';
|
||
postStop = ''
|
||
ip link delete dev "${n}" || true
|
||
'';
|
||
}
|
||
);
|
||
|
||
createVlanDevice =
|
||
n: v:
|
||
nameValuePair "${n}-netdev" (
|
||
let
|
||
deps = deviceDependency v.interface;
|
||
in
|
||
{
|
||
description = "VLAN Interface ${n}";
|
||
wantedBy = [
|
||
"network.target"
|
||
"network-setup.service"
|
||
(subsystemDevice n)
|
||
];
|
||
bindsTo = deps;
|
||
partOf = [ "network-setup.service" ];
|
||
after = [ "network-pre.target" ] ++ deps;
|
||
before = [ "network-setup.service" ];
|
||
serviceConfig.Type = "oneshot";
|
||
serviceConfig.RemainAfterExit = true;
|
||
path = [ pkgs.iproute2 ];
|
||
script = ''
|
||
# Remove Dead Interfaces
|
||
ip link show dev "${n}" >/dev/null 2>&1 && ip link delete dev "${n}"
|
||
ip link add link "${v.interface}" name "${n}" type vlan id "${toString v.id}"
|
||
|
||
# We try to bring up the logical VLAN interface. If the master
|
||
# interface the logical interface is dependent upon is not up yet we will
|
||
# fail to immediately bring up the logical interface. The resulting logical
|
||
# interface will brought up later when the master interface is up.
|
||
ip link set dev "${n}" up || true
|
||
'';
|
||
postStop = ''
|
||
ip link delete dev "${n}" || true
|
||
'';
|
||
}
|
||
);
|
||
|
||
in
|
||
listToAttrs (
|
||
map configureAddrs interfaces ++ map createTunDevice (filter (i: i.virtual) interfaces)
|
||
)
|
||
// mapAttrs' createBridgeDevice cfg.bridges
|
||
// mapAttrs' createVswitchDevice cfg.vswitches
|
||
// mapAttrs' createBondDevice cfg.bonds
|
||
// mapAttrs' createMacvlanDevice cfg.macvlans
|
||
// mapAttrs' createFouEncapsulation cfg.fooOverUDP
|
||
// mapAttrs' createSitDevice cfg.sits
|
||
// mapAttrs' createIpipDevice cfg.ipips
|
||
// mapAttrs' createGreDevice cfg.greTunnels
|
||
// mapAttrs' createVlanDevice cfg.vlans
|
||
// {
|
||
network-setup = networkSetup;
|
||
network-local-commands = networkLocalCommands;
|
||
};
|
||
|
||
services.udev.extraRules = ''
|
||
KERNEL=="tun", TAG+="systemd"
|
||
'';
|
||
|
||
};
|
||
|
||
in
|
||
|
||
{
|
||
|
||
meta.maintainers = with lib.maintainers; [ rnhmjoj ];
|
||
|
||
config = mkMerge [
|
||
bondWarnings
|
||
(mkIf (!cfg.useNetworkd) normalConfig)
|
||
{
|
||
# Ensure slave interfaces are brought up
|
||
networking.interfaces = genAttrs slaves (i: { });
|
||
}
|
||
];
|
||
}
|