diff options
Diffstat (limited to 'nixos/modules/system/boot/networkd.nix')
| -rw-r--r-- | nixos/modules/system/boot/networkd.nix | 168 |
1 files changed, 143 insertions, 25 deletions
diff --git a/nixos/modules/system/boot/networkd.nix b/nixos/modules/system/boot/networkd.nix index 05a667a09efc1..bd2f1cc4374a7 100644 --- a/nixos/modules/system/boot/networkd.nix +++ b/nixos/modules/system/boot/networkd.nix @@ -6,8 +6,6 @@ with lib; let - cfg = config.systemd.network; - check = { global = { @@ -2941,14 +2939,12 @@ let + def.extraConfig; }; - unitFiles = listToAttrs (map (name: { - name = "systemd/network/${name}"; + mkUnitFiles = prefix: cfg: listToAttrs (map (name: { + name = "${prefix}systemd/network/${name}"; value.source = "${cfg.units.${name}.unit}/${name}"; }) (attrNames cfg.units)); -in -{ - options = { + commonOptions = { systemd.network.enable = mkOption { default = false; @@ -3051,12 +3047,11 @@ in }; - config = mkMerge [ + commonConfig = config: let cfg = config.systemd.network; in mkMerge [ # .link units are honored by udev, no matter if systemd-networkd is enabled or not. { systemd.network.units = mapAttrs' (n: v: nameValuePair "${n}.link" (linkToUnit n v)) cfg.links; - environment.etc = unitFiles; systemd.network.wait-online.extraArgs = [ "--timeout=${toString cfg.wait-online.timeout}" ] @@ -3066,14 +3061,6 @@ in (mkIf config.systemd.network.enable { - users.users.systemd-network.group = "systemd-network"; - - systemd.additionalUpstreamSystemUnits = [ - "systemd-networkd-wait-online.service" - "systemd-networkd.service" - "systemd-networkd.socket" - ]; - systemd.network.units = mapAttrs' (n: v: nameValuePair "${n}.netdev" (netdevToUnit n v)) cfg.netdevs // mapAttrs' (n: v: nameValuePair "${n}.network" (networkToUnit n v)) cfg.networks; @@ -3082,14 +3069,6 @@ in # networkd. systemd.sockets.systemd-networkd.wantedBy = [ "sockets.target" ]; - systemd.services.systemd-networkd = { - wantedBy = [ "multi-user.target" ]; - aliases = [ "dbus-org.freedesktop.network1.service" ]; - restartTriggers = map (x: x.source) (attrValues unitFiles) ++ [ - config.environment.etc."systemd/networkd.conf".source - ]; - }; - systemd.services.systemd-networkd-wait-online = { inherit (cfg.wait-online) enable; wantedBy = [ "network-online.target" ]; @@ -3111,8 +3090,37 @@ in }; }; + }) + ]; + + stage2Config = let + cfg = config.systemd.network; + unitFiles = mkUnitFiles "" cfg; + in mkMerge [ + (commonConfig config) + + { environment.etc = unitFiles; } + + (mkIf config.systemd.network.enable { + + users.users.systemd-network.group = "systemd-network"; + + systemd.additionalUpstreamSystemUnits = [ + "systemd-networkd-wait-online.service" + "systemd-networkd.service" + "systemd-networkd.socket" + ]; + environment.etc."systemd/networkd.conf" = renderConfig cfg.config; + systemd.services.systemd-networkd = { + wantedBy = [ "multi-user.target" ]; + restartTriggers = map (x: x.source) (attrValues unitFiles) ++ [ + config.environment.etc."systemd/networkd.conf".source + ]; + aliases = [ "dbus-org.freedesktop.network1.service" ]; + }; + networking.iproute2 = mkIf (cfg.config.addRouteTablesToIPRoute2 && cfg.config.routeTables != { }) { enable = mkDefault true; rttablesExtraConfig = '' @@ -3123,6 +3131,116 @@ in }; services.resolved.enable = mkDefault true; + + }) + ]; + + stage1Config = let + cfg = config.boot.initrd.systemd.network; + in mkMerge [ + (commonConfig config.boot.initrd) + + { + systemd.network.enable = mkDefault config.boot.initrd.network.enable; + systemd.contents = mkUnitFiles "/etc/" cfg; + + # Networkd link files are used early by udev to set up interfaces early. + # This must be done in stage 1 to avoid race conditions between udev and + # network daemons. + systemd.network.units = lib.filterAttrs (n: _: hasSuffix ".link" n) config.systemd.network.units; + systemd.storePaths = ["${config.boot.initrd.systemd.package}/lib/systemd/network/99-default.link"]; + } + + (mkIf cfg.enable { + + systemd.package = pkgs.systemdStage1Network; + + # For networkctl + systemd.dbus.enable = mkDefault true; + + systemd.additionalUpstreamUnits = [ + "systemd-networkd-wait-online.service" + "systemd-networkd.service" + "systemd-networkd.socket" + "systemd-network-generator.service" + "network-online.target" + "network-pre.target" + "network.target" + "nss-lookup.target" + "nss-user-lookup.target" + "remote-fs-pre.target" + "remote-fs.target" + ]; + systemd.users.systemd-network = {}; + systemd.groups.systemd-network = {}; + + systemd.contents."/etc/systemd/networkd.conf" = renderConfig cfg.config; + + systemd.services.systemd-networkd.wantedBy = [ "initrd.target" ]; + systemd.services.systemd-network-generator.wantedBy = [ "sysinit.target" ]; + + systemd.storePaths = [ + "${config.boot.initrd.systemd.package}/lib/systemd/systemd-networkd" + "${config.boot.initrd.systemd.package}/lib/systemd/systemd-networkd-wait-online" + "${config.boot.initrd.systemd.package}/lib/systemd/systemd-network-generator" + ]; + kernelModules = [ "af_packet" ]; + + systemd.services.nixos-flush-networkd = mkIf config.boot.initrd.network.flushBeforeStage2 { + description = "Flush Network Configuration"; + wantedBy = ["initrd.target"]; + after = ["systemd-networkd.service" "dbus.socket" "dbus.service"]; + before = ["shutdown.target" "initrd-switch-root.target"]; + conflicts = ["shutdown.target" "initrd-switch-root.target"]; + unitConfig.DefaultDependencies = false; + serviceConfig = { + # This service does nothing when starting, but brings down + # interfaces when switching root. This is the easiest way to + # ensure proper ordering while stopping. See systemd.unit(5) + # section on Before= and After=. The important part is that + # we are stopped before units we need, like dbus.service, + # and that we are stopped before starting units like + # initrd-switch-root.target + Type = "oneshot"; + RemainAfterExit = true; + ExecStart = "/bin/true"; + }; + # systemd-networkd doesn't bring down interfaces on its own + # when it exits (see: systemd-networkd(8)), so we have to do + # it ourselves. The networkctl command doesn't have a way to + # bring all interfaces down, so we have to iterate over the + # list and filter out unmanaged interfaces to bring them down + # individually. + preStop = '' + networkctl list --full --no-legend | while read _idx link _type _operational setup _; do + [ "$setup" = unmanaged ] && continue + networkctl down "$link" + done + ''; + }; + + }) + ]; + +in + +{ + options = commonOptions // { + boot.initrd = commonOptions; + }; + + config = mkMerge [ + stage2Config + (mkIf config.boot.initrd.systemd.enable { + assertions = [{ + assertion = config.boot.initrd.network.udhcpc.extraArgs == []; + message = '' + boot.initrd.network.udhcpc.extraArgs is not supported when + boot.initrd.systemd.enable is enabled + ''; + }]; + + boot.initrd = stage1Config; }) ]; } |