nixos/openvswitch: add ipsec gre tunnels support

Changed files
+90 -42
nixos
modules
virtualisation
+90 -42
nixos/modules/virtualisation/openvswitch.nix
···
let
cfg = config.virtualisation.vswitch;
-
in
-
{
-
-
options = {
-
-
virtualisation.vswitch.enable = mkOption {
type = types.bool;
default = false;
-
description =
-
''
-
Enable Open vSwitch. A configuration
-
daemon (ovs-server) will be started.
'';
};
-
-
virtualisation.vswitch.package = mkOption {
type = types.package;
default = pkgs.openvswitch;
-
description =
-
''
Open vSwitch package to use.
-
'';
};
};
-
config = mkIf cfg.enable (let
# Where the communication sockets live
runDir = "/var/run/openvswitch";
···
# Where the config database live (can't be in nix-store)
stateDir = "/var/db/openvswitch";
-
# The path to the an initialized version of the database
db = pkgs.stdenv.mkDerivation {
name = "vswitch.db";
unpackPhase = "true";
···
buildInputs = with pkgs; [
cfg.package
];
-
installPhase =
-
''
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ensureDir $out/
-
'';
};
-
in {
-
environment.systemPackages = [ cfg.package ];
boot.kernelModules = [ "tun" "openvswitch" ];
···
path = [ cfg.package ];
restartTriggers = [ db cfg.package ];
# Create the config database
-
preStart =
''
mkdir -p ${runDir}
mkdir -p /var/db/openvswitch
···
fi
chmod -R +w /var/db/openvswitch
'';
-
serviceConfig.ExecStart =
-
''
-
${cfg.package}/bin/ovsdb-server \
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--remote=punix:${runDir}/db.sock \
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--private-key=db:Open_vSwitch,SSL,private_key \
-
--certificate=db:Open_vSwitch,SSL,certificate \
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--bootstrap-ca-cert=db:Open_vSwitch,SSL,ca_cert \
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--unixctl=ovsdb.ctl.sock \
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/var/db/openvswitch/conf.db
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'';
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serviceConfig.Restart = "always";
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serviceConfig.RestartSec = 3;
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postStart =
-
''
${cfg.package}/bin/ovs-vsctl --timeout 3 --retry --no-wait init
-
'';
-
};
systemd.services.vswitchd = {
···
bindsTo = [ "ovsdb.service" ];
after = [ "ovsdb.service" ];
path = [ cfg.package ];
-
serviceConfig.ExecStart = ''${cfg.package}/bin/ovs-vswitchd'';
};
-
});
}
···
let
cfg = config.virtualisation.vswitch;
+
in {
+
options.virtualisation.vswitch = {
+
enable = mkOption {
type = types.bool;
default = false;
+
description = ''
+
Whether to enable Open vSwitch. A configuration daemon (ovs-server)
+
will be started.
'';
};
+
package = mkOption {
type = types.package;
default = pkgs.openvswitch;
+
description = ''
Open vSwitch package to use.
+
'';
};
+
ipsec = mkOption {
+
type = types.bool;
+
default = false;
+
description = ''
+
Whether to start racoon service for openvswitch.
+
'';
+
};
};
+
config = mkIf cfg.enable (let
# Where the communication sockets live
runDir = "/var/run/openvswitch";
···
# Where the config database live (can't be in nix-store)
stateDir = "/var/db/openvswitch";
+
# The path to the an initialized version of the database
db = pkgs.stdenv.mkDerivation {
name = "vswitch.db";
unpackPhase = "true";
···
buildInputs = with pkgs; [
cfg.package
];
+
installPhase = "mkdir -p $out";
};
+
in (mkMerge [{
+
environment.systemPackages = [ cfg.package pkgs.ipsecTools ];
boot.kernelModules = [ "tun" "openvswitch" ];
···
path = [ cfg.package ];
restartTriggers = [ db cfg.package ];
# Create the config database
+
preStart =
''
mkdir -p ${runDir}
mkdir -p /var/db/openvswitch
···
fi
chmod -R +w /var/db/openvswitch
'';
+
serviceConfig = {
+
ExecStart =
+
''
+
${cfg.package}/bin/ovsdb-server \
+
--remote=punix:${runDir}/db.sock \
+
--private-key=db:Open_vSwitch,SSL,private_key \
+
--certificate=db:Open_vSwitch,SSL,certificate \
+
--bootstrap-ca-cert=db:Open_vSwitch,SSL,ca_cert \
+
--unixctl=ovsdb.ctl.sock \
+
--pidfile=/var/run/openvswitch/ovsdb.pid \
+
--detach \
+
/var/db/openvswitch/conf.db
+
'';
+
Restart = "always";
+
RestartSec = 3;
+
PIDFile = "/var/run/openvswitch/ovsdb.pid";
+
Type = "forking";
+
};
+
postStart = ''
${cfg.package}/bin/ovs-vsctl --timeout 3 --retry --no-wait init
+
'';
};
systemd.services.vswitchd = {
···
bindsTo = [ "ovsdb.service" ];
after = [ "ovsdb.service" ];
path = [ cfg.package ];
+
serviceConfig = {
+
ExecStart = ''
+
${cfg.package}/bin/ovs-vswitchd \
+
--pidfile=/var/run/openvswitch/ovs-vswitchd.pid \
+
--detach
+
'';
+
PIDFile = "/var/run/openvswitch/ovs-vswitchd.pid";
+
Type = "forking";
+
};
};
+
}
+
(mkIf cfg.ipsec {
+
services.racoon.enable = true;
+
services.racoon.configPath = "${runDir}/ipsec/etc/racoon/racoon.conf";
+
+
networking.firewall.extraCommands = ''
+
iptables -I INPUT -t mangle -p esp -j MARK --set-mark 1/1
+
iptables -I INPUT -t mangle -p udp --dport 4500 -j MARK --set-mark 1/1
+
'';
+
+
systemd.services.ovs-monitor-ipsec = {
+
description = "Open_vSwitch Ipsec Daemon";
+
wantedBy = [ "multi-user.target" ];
+
requires = [ "racoon.service" ];
+
after = [ "vswitchd.service" ];
+
environment.UNIXCTLPATH = "/tmp/ovsdb.ctl.sock";
+
serviceConfig = {
+
ExecStart = ''
+
${cfg.package}/bin/ovs-monitor-ipsec \
+
--root-prefix ${runDir}/ipsec \
+
--pidfile /var/run/openvswitch/ovs-monitor-ipsec.pid \
+
--monitor --detach \
+
unix:/var/run/openvswitch/db.sock
+
'';
+
PIDFile = "/var/run/openvswitch/ovs-monitor-ipsec.pid";
+
Type = "forking";
+
};
+
+
preStart = ''
+
rm -r ${runDir}/ipsec/etc/racoon/certs || true
+
mkdir -p ${runDir}/ipsec/{etc/racoon,etc/init.d/,usr/sbin/}
+
ln -fs ${pkgs.ipsecTools}/bin/setkey ${runDir}/ipsec/usr/sbin/setkey
+
ln -fs ${pkgs.writeScript "racoon-restart" ''
+
#!${pkgs.stdenv.shell}
+
/var/run/current-system/sw/bin/systemctl $1 racoon
+
''} ${runDir}/ipsec/etc/init.d/racoon
+
'';
+
};
+
})]));
}