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Merge pull request #237154 from ElvishJerricco/sd-s1-networkd-flush-with-keep-configuration

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systemd stage 1 networking: Use KeepConfiguration
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Will Fancher 2023-10-03 23:37:03 -04:00 committed by GitHub
commit 37601de942
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1 changed files with 13 additions and 33 deletions
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46
nixos/modules/system/boot/networkd.nix
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@ -2858,6 +2858,17 @@ let
})
];
stage1Options = {
options.boot.initrd.systemd.network.networks = mkOption {
type = with types; attrsOf (submodule {
# Default in initrd is dhcp-on-stop, which is correct if flushBeforeStage2 = false
config = mkIf config.boot.initrd.network.flushBeforeStage2 {
networkConfig.KeepConfiguration = mkDefault false;
};
});
};
};
stage1Config = let
cfg = config.boot.initrd.systemd.network;
in mkMerge [
@ -2921,45 +2932,14 @@ let
];
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
{
imports = [ stage1Options ];
options = {
systemd.network = commonOptions true;
boot.initrd.systemd.network = commonOptions "shallow";