nixos/qemu-vm: add option for named network interfaces
Adds a new option to the virtualisation modules that enables specifying explicitly named network interfaces in QEMU VMs. The existing `virtualisation.vlans` option is still supported for cases where the name of the network interface is irrelevant.
This commit is contained in:
Graham Dennis
parent
e6e049b7a2
commit
93502aa3b1
5 changed files with 140 additions and 96 deletions
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@ -16,4 +16,4 @@
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## Other Notable Changes {#sec-release-23.11-notable-changes}
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- Create the first release note entry in this section!
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- A new option was added to the virtualisation module that enables specifying explicitly named network interfaces in QEMU VMs. The existing `virtualisation.vlans` is still supported for cases where the name of the network interface is irrelevant.
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@ -12,7 +12,9 @@ let
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};
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vlans = map (m: m.virtualisation.vlans) (lib.attrValues config.nodes);
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vlans = map (m: (
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m.virtualisation.vlans ++
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(lib.mapAttrsToList (_: v: v.vlan) m.virtualisation.interfaces))) (lib.attrValues config.nodes);
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vms = map (m: m.system.build.vm) (lib.attrValues config.nodes);
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nodeHostNames =
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@ -4,7 +4,7 @@ let
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inherit (lib)
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attrNames concatMap concatMapStrings flip forEach head
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listToAttrs mkDefault mkOption nameValuePair optionalString
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range types zipListsWith zipLists
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range toLower types zipListsWith zipLists
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mdDoc
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;
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@ -18,24 +18,41 @@ let
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networkModule = { config, nodes, pkgs, ... }:
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let
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interfacesNumbered = zipLists config.virtualisation.vlans (range 1 255);
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interfaces = forEach interfacesNumbered ({ fst, snd }:
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nameValuePair "eth${toString snd}" {
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ipv4.addresses =
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[{
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address = "192.168.${toString fst}.${toString config.virtualisation.test.nodeNumber}";
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qemu-common = import ../qemu-common.nix { inherit lib pkgs; };
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# Convert legacy VLANs to named interfaces and merge with explicit interfaces.
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vlansNumbered = forEach (zipLists config.virtualisation.vlans (range 1 255)) (v: {
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name = "eth${toString v.snd}";
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vlan = v.fst;
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assignIP = true;
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});
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explicitInterfaces = lib.mapAttrsToList (n: v: v // { name = n; }) config.virtualisation.interfaces;
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interfaces = vlansNumbered ++ explicitInterfaces;
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interfacesNumbered = zipLists interfaces (range 1 255);
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# Automatically assign IP addresses to requested interfaces.
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assignIPs = lib.filter (i: i.assignIP) interfaces;
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ipInterfaces = forEach assignIPs (i:
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nameValuePair i.name { ipv4.addresses =
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[ { address = "192.168.${toString i.vlan}.${toString config.virtualisation.test.nodeNumber}";
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prefixLength = 24;
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}];
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});
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qemuOptions = lib.flatten (forEach interfacesNumbered ({ fst, snd }:
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qemu-common.qemuNICFlags snd fst.vlan config.virtualisation.test.nodeNumber));
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udevRules = forEach interfacesNumbered ({ fst, snd }:
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# MAC Addresses for QEMU network devices are lowercase, and udev string comparison is case-sensitive.
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"SUBSYSTEM==\"net\",ACTION==\"add\",ATTR{address}==\"${toLower(qemu-common.qemuNicMac fst.vlan config.virtualisation.test.nodeNumber)}\",NAME=\"${fst.name}\"");
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networkConfig =
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{
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networking.hostName = mkDefault config.virtualisation.test.nodeName;
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networking.interfaces = listToAttrs interfaces;
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networking.interfaces = listToAttrs ipInterfaces;
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networking.primaryIPAddress =
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optionalString (interfaces != [ ]) (head (head interfaces).value.ipv4.addresses).address;
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optionalString (ipInterfaces != [ ]) (head (head ipInterfaces).value.ipv4.addresses).address;
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# Put the IP addresses of all VMs in this machine's
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# /etc/hosts file. If a machine has multiple
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@ -51,16 +68,13 @@ let
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"${config.networking.hostName}.${config.networking.domain} " +
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"${config.networking.hostName}\n"));
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virtualisation.qemu.options =
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let qemu-common = import ../qemu-common.nix { inherit lib pkgs; };
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in
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flip concatMap interfacesNumbered
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({ fst, snd }: qemu-common.qemuNICFlags snd fst config.virtualisation.test.nodeNumber);
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virtualisation.qemu.options = qemuOptions;
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boot.initrd.services.udev.rules = concatMapStrings (x: x + "\n") udevRules;
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};
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in
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{
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key = "ip-address";
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key = "network-interfaces";
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config = networkConfig // {
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# Expose the networkConfig items for tests like nixops
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# that need to recreate the network config.
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@ -564,7 +564,8 @@ in
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virtualisation.vlans =
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mkOption {
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type = types.listOf types.ints.unsigned;
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default = [ 1 ];
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default = if config.virtualisation.interfaces == {} then [ 1 ] else [ ];
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defaultText = lib.literalExpression ''if config.virtualisation.interfaces == {} then [ 1 ] else [ ]'';
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example = [ 1 2 ];
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description =
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lib.mdDoc ''
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@ -579,6 +580,35 @@ in
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'';
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};
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virtualisation.interfaces = mkOption {
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default = {};
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example = {
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enp1s0.vlan = 1;
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};
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description = lib.mdDoc ''
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Network interfaces to add to the VM.
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'';
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type = with types; attrsOf (submodule {
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options = {
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vlan = mkOption {
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type = types.ints.unsigned;
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description = lib.mdDoc ''
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VLAN to which the network interface is connected.
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'';
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};
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assignIP = mkOption {
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type = types.bool;
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default = false;
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description = lib.mdDoc ''
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Automatically assign an IP address to the network interface using the same scheme as
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virtualisation.vlans.
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'';
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};
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};
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});
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};
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virtualisation.writableStore =
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mkOption {
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type = types.bool;
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@ -93,18 +93,19 @@ let
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name = "Static";
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nodes.router = router;
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nodes.client = { pkgs, ... }: with pkgs.lib; {
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virtualisation.vlans = [ 1 2 ];
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virtualisation.interfaces.enp1s0.vlan = 1;
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virtualisation.interfaces.enp2s0.vlan = 2;
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networking = {
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useNetworkd = networkd;
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useDHCP = false;
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defaultGateway = "192.168.1.1";
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defaultGateway6 = "fd00:1234:5678:1::1";
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interfaces.eth1.ipv4.addresses = mkOverride 0 [
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interfaces.enp1s0.ipv4.addresses = [
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{ address = "192.168.1.2"; prefixLength = 24; }
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{ address = "192.168.1.3"; prefixLength = 32; }
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{ address = "192.168.1.10"; prefixLength = 32; }
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];
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interfaces.eth2.ipv4.addresses = mkOverride 0 [
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interfaces.enp2s0.ipv4.addresses = [
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{ address = "192.168.2.2"; prefixLength = 24; }
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];
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};
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@ -170,12 +171,12 @@ let
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# Disable test driver default config
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networking.interfaces = lib.mkForce {};
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networking.useNetworkd = networkd;
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virtualisation.vlans = [ 1 ];
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virtualisation.interfaces.enp1s0.vlan = 1;
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};
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testScript = ''
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start_all()
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client.wait_for_unit("multi-user.target")
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client.wait_until_succeeds("ip addr show dev eth1 | grep '192.168.1'")
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client.wait_until_succeeds("ip addr show dev enp1s0 | grep '192.168.1'")
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client.shell_interact()
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client.succeed("ping -c 1 192.168.1.1")
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router.succeed("ping -c 1 192.168.1.1")
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@ -187,20 +188,13 @@ let
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name = "SimpleDHCP";
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nodes.router = router;
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nodes.client = { pkgs, ... }: with pkgs.lib; {
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virtualisation.vlans = [ 1 2 ];
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virtualisation.interfaces.enp1s0.vlan = 1;
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virtualisation.interfaces.enp2s0.vlan = 2;
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networking = {
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useNetworkd = networkd;
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useDHCP = false;
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interfaces.eth1 = {
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ipv4.addresses = mkOverride 0 [ ];
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ipv6.addresses = mkOverride 0 [ ];
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useDHCP = true;
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};
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interfaces.eth2 = {
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ipv4.addresses = mkOverride 0 [ ];
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ipv6.addresses = mkOverride 0 [ ];
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useDHCP = true;
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};
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interfaces.enp1s0.useDHCP = true;
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interfaces.enp2s0.useDHCP = true;
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};
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};
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testScript = { ... }:
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@ -211,10 +205,10 @@ let
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router.wait_for_unit("network-online.target")
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with subtest("Wait until we have an ip address on each interface"):
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client.wait_until_succeeds("ip addr show dev eth1 | grep -q '192.168.1'")
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client.wait_until_succeeds("ip addr show dev eth1 | grep -q 'fd00:1234:5678:1:'")
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client.wait_until_succeeds("ip addr show dev eth2 | grep -q '192.168.2'")
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client.wait_until_succeeds("ip addr show dev eth2 | grep -q 'fd00:1234:5678:2:'")
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client.wait_until_succeeds("ip addr show dev enp1s0 | grep -q '192.168.1'")
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client.wait_until_succeeds("ip addr show dev enp1s0 | grep -q 'fd00:1234:5678:1:'")
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client.wait_until_succeeds("ip addr show dev enp2s0 | grep -q '192.168.2'")
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client.wait_until_succeeds("ip addr show dev enp2s0 | grep -q 'fd00:1234:5678:2:'")
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with subtest("Test vlan 1"):
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client.wait_until_succeeds("ping -c 1 192.168.1.1")
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name = "OneInterfaceDHCP";
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nodes.router = router;
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nodes.client = { pkgs, ... }: with pkgs.lib; {
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virtualisation.vlans = [ 1 2 ];
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virtualisation.interfaces.enp1s0.vlan = 1;
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virtualisation.interfaces.enp2s0.vlan = 2;
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networking = {
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useNetworkd = networkd;
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useDHCP = false;
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interfaces.eth1 = {
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ipv4.addresses = mkOverride 0 [ ];
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interfaces.enp1s0 = {
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mtu = 1343;
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useDHCP = true;
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};
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interfaces.eth2.ipv4.addresses = mkOverride 0 [ ];
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};
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};
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testScript = { ... }:
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router.wait_for_unit("network.target")
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with subtest("Wait until we have an ip address on each interface"):
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client.wait_until_succeeds("ip addr show dev eth1 | grep -q '192.168.1'")
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client.wait_until_succeeds("ip addr show dev enp1s0 | grep -q '192.168.1'")
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with subtest("ensure MTU is set"):
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assert "mtu 1343" in client.succeed("ip link show dev eth1")
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assert "mtu 1343" in client.succeed("ip link show dev enp1s0")
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with subtest("Test vlan 1"):
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client.wait_until_succeeds("ping -c 1 192.168.1.1")
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};
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bond = let
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node = address: { pkgs, ... }: with pkgs.lib; {
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virtualisation.vlans = [ 1 2 ];
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virtualisation.interfaces.enp1s0.vlan = 1;
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virtualisation.interfaces.enp2s0.vlan = 2;
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networking = {
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useNetworkd = networkd;
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useDHCP = false;
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bonds.bond0 = {
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interfaces = [ "eth1" "eth2" ];
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interfaces = [ "enp1s0" "enp2s0" ];
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driverOptions.mode = "802.3ad";
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};
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interfaces.eth1.ipv4.addresses = mkOverride 0 [ ];
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interfaces.eth2.ipv4.addresses = mkOverride 0 [ ];
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interfaces.bond0.ipv4.addresses = mkOverride 0
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[ { inherit address; prefixLength = 30; } ];
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};
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@ -326,12 +318,11 @@ let
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};
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bridge = let
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node = { address, vlan }: { pkgs, ... }: with pkgs.lib; {
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virtualisation.vlans = [ vlan ];
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virtualisation.interfaces.enp1s0.vlan = vlan;
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networking = {
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useNetworkd = networkd;
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useDHCP = false;
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interfaces.eth1.ipv4.addresses = mkOverride 0
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[ { inherit address; prefixLength = 24; } ];
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interfaces.enp1s0.ipv4.addresses = [ { inherit address; prefixLength = 24; } ];
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};
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};
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in {
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@ -339,11 +330,12 @@ let
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nodes.client1 = node { address = "192.168.1.2"; vlan = 1; };
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nodes.client2 = node { address = "192.168.1.3"; vlan = 2; };
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nodes.router = { pkgs, ... }: with pkgs.lib; {
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virtualisation.vlans = [ 1 2 ];
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virtualisation.interfaces.enp1s0.vlan = 1;
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virtualisation.interfaces.enp2s0.vlan = 2;
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networking = {
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useNetworkd = networkd;
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useDHCP = false;
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bridges.bridge.interfaces = [ "eth1" "eth2" ];
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bridges.bridge.interfaces = [ "enp1s0" "enp2s0" ];
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interfaces.eth1.ipv4.addresses = mkOverride 0 [ ];
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interfaces.eth2.ipv4.addresses = mkOverride 0 [ ];
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interfaces.bridge.ipv4.addresses = mkOverride 0
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@ -377,7 +369,7 @@ let
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nodes.router = router;
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nodes.client = { pkgs, ... }: with pkgs.lib; {
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environment.systemPackages = [ pkgs.iptables ]; # to debug firewall rules
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virtualisation.vlans = [ 1 ];
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virtualisation.interfaces.enp1s0.vlan = 1;
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networking = {
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useNetworkd = networkd;
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useDHCP = false;
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@ -385,14 +377,9 @@ let
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# reverse path filtering rules for the macvlan interface seem
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# to be incorrect, causing the test to fail. Disable temporarily.
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firewall.checkReversePath = false;
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macvlans.macvlan.interface = "eth1";
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interfaces.eth1 = {
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ipv4.addresses = mkOverride 0 [ ];
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useDHCP = true;
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};
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interfaces.macvlan = {
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useDHCP = true;
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};
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macvlans.macvlan.interface = "enp1s0";
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interfaces.enp1s0.useDHCP = true;
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interfaces.macvlan.useDHCP = true;
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};
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};
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testScript = { ... }:
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@ -404,7 +391,7 @@ let
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router.wait_for_unit("network.target")
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with subtest("Wait until we have an ip address on each interface"):
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client.wait_until_succeeds("ip addr show dev eth1 | grep -q '192.168.1'")
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client.wait_until_succeeds("ip addr show dev enp1s0 | grep -q '192.168.1'")
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client.wait_until_succeeds("ip addr show dev macvlan | grep -q '192.168.1'")
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with subtest("Print lots of diagnostic information"):
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@ -431,23 +418,22 @@ let
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fou = {
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name = "foo-over-udp";
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nodes.machine = { ... }: {
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virtualisation.vlans = [ 1 ];
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virtualisation.interfaces.enp1s0.vlan = 1;
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networking = {
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useNetworkd = networkd;
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useDHCP = false;
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interfaces.eth1.ipv4.addresses = mkOverride 0
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[ { address = "192.168.1.1"; prefixLength = 24; } ];
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interfaces.enp1s0.ipv4.addresses = [ { address = "192.168.1.1"; prefixLength = 24; } ];
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fooOverUDP = {
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fou1 = { port = 9001; };
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fou2 = { port = 9002; protocol = 41; };
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fou3 = mkIf (!networkd)
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{ port = 9003; local.address = "192.168.1.1"; };
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fou4 = mkIf (!networkd)
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{ port = 9004; local = { address = "192.168.1.1"; dev = "eth1"; }; };
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{ port = 9004; local = { address = "192.168.1.1"; dev = "enp1s0"; }; };
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};
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};
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systemd.services = {
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fou3-fou-encap.after = optional (!networkd) "network-addresses-eth1.service";
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fou3-fou-encap.after = optional (!networkd) "network-addresses-enp1s0.service";
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};
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};
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testScript = { ... }:
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@ -470,22 +456,22 @@ let
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"gue": None,
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"family": "inet",
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"local": "192.168.1.1",
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"dev": "eth1",
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"dev": "enp1s0",
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} in fous, "fou4 exists"
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'';
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};
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sit = let
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node = { address4, remote, address6 }: { pkgs, ... }: with pkgs.lib; {
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virtualisation.vlans = [ 1 ];
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virtualisation.interfaces.enp1s0.vlan = 1;
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networking = {
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useNetworkd = networkd;
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useDHCP = false;
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sits.sit = {
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inherit remote;
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local = address4;
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dev = "eth1";
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dev = "enp1s0";
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};
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interfaces.eth1.ipv4.addresses = mkOverride 0
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interfaces.enp1s0.ipv4.addresses = mkOverride 0
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[ { address = address4; prefixLength = 24; } ];
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interfaces.sit.ipv6.addresses = mkOverride 0
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[ { address = address6; prefixLength = 64; } ];
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@ -685,10 +671,10 @@ let
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vlan-ping = let
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baseIP = number: "10.10.10.${number}";
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vlanIP = number: "10.1.1.${number}";
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baseInterface = "eth1";
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||||
baseInterface = "enp1s0";
|
||||
vlanInterface = "vlan42";
|
||||
node = number: {pkgs, ... }: with pkgs.lib; {
|
||||
virtualisation.vlans = [ 1 ];
|
||||
virtualisation.interfaces.enp1s0.vlan = 1;
|
||||
networking = {
|
||||
#useNetworkd = networkd;
|
||||
useDHCP = false;
|
||||
|
|
@ -785,12 +771,12 @@ let
|
|||
privacy = {
|
||||
name = "Privacy";
|
||||
nodes.router = { ... }: {
|
||||
virtualisation.vlans = [ 1 ];
|
||||
virtualisation.interfaces.enp1s0.vlan = 1;
|
||||
boot.kernel.sysctl."net.ipv6.conf.all.forwarding" = true;
|
||||
networking = {
|
||||
useNetworkd = networkd;
|
||||
useDHCP = false;
|
||||
interfaces.eth1.ipv6.addresses = singleton {
|
||||
interfaces.enp1s0.ipv6.addresses = singleton {
|
||||
address = "fd00:1234:5678:1::1";
|
||||
prefixLength = 64;
|
||||
};
|
||||
|
|
@ -798,7 +784,7 @@ let
|
|||
services.radvd = {
|
||||
enable = true;
|
||||
config = ''
|
||||
interface eth1 {
|
||||
interface enp1s0 {
|
||||
AdvSendAdvert on;
|
||||
AdvManagedFlag on;
|
||||
AdvOtherConfigFlag on;
|
||||
|
|
@ -812,11 +798,11 @@ let
|
|||
};
|
||||
};
|
||||
nodes.client_with_privacy = { pkgs, ... }: with pkgs.lib; {
|
||||
virtualisation.vlans = [ 1 ];
|
||||
virtualisation.interfaces.enp1s0.vlan = 1;
|
||||
networking = {
|
||||
useNetworkd = networkd;
|
||||
useDHCP = false;
|
||||
interfaces.eth1 = {
|
||||
interfaces.enp1s0 = {
|
||||
tempAddress = "default";
|
||||
ipv4.addresses = mkOverride 0 [ ];
|
||||
ipv6.addresses = mkOverride 0 [ ];
|
||||
|
|
@ -825,11 +811,11 @@ let
|
|||
};
|
||||
};
|
||||
nodes.client = { pkgs, ... }: with pkgs.lib; {
|
||||
virtualisation.vlans = [ 1 ];
|
||||
virtualisation.interfaces.enp1s0.vlan = 1;
|
||||
networking = {
|
||||
useNetworkd = networkd;
|
||||
useDHCP = false;
|
||||
interfaces.eth1 = {
|
||||
interfaces.enp1s0 = {
|
||||
tempAddress = "enabled";
|
||||
ipv4.addresses = mkOverride 0 [ ];
|
||||
ipv6.addresses = mkOverride 0 [ ];
|
||||
|
|
@ -847,9 +833,9 @@ let
|
|||
|
||||
with subtest("Wait until we have an ip address"):
|
||||
client_with_privacy.wait_until_succeeds(
|
||||
"ip addr show dev eth1 | grep -q 'fd00:1234:5678:1:'"
|
||||
"ip addr show dev enp1s0 | grep -q 'fd00:1234:5678:1:'"
|
||||
)
|
||||
client.wait_until_succeeds("ip addr show dev eth1 | grep -q 'fd00:1234:5678:1:'")
|
||||
client.wait_until_succeeds("ip addr show dev enp1s0 | grep -q 'fd00:1234:5678:1:'")
|
||||
|
||||
with subtest("Test vlan 1"):
|
||||
client_with_privacy.wait_until_succeeds("ping -c 1 fd00:1234:5678:1::1")
|
||||
|
|
@ -947,7 +933,7 @@ let
|
|||
), "The IPv6 routing table has not been properly cleaned:\n{}".format(ipv6Residue)
|
||||
'';
|
||||
};
|
||||
rename = {
|
||||
rename = if networkd then {
|
||||
name = "RenameInterface";
|
||||
nodes.machine = { pkgs, ... }: {
|
||||
virtualisation.vlans = [ 1 ];
|
||||
|
|
@ -955,23 +941,20 @@ let
|
|||
useNetworkd = networkd;
|
||||
useDHCP = false;
|
||||
};
|
||||
} //
|
||||
(if networkd
|
||||
then { systemd.network.links."10-custom_name" = {
|
||||
matchConfig.MACAddress = "52:54:00:12:01:01";
|
||||
linkConfig.Name = "custom_name";
|
||||
};
|
||||
}
|
||||
else { boot.initrd.services.udev.rules = ''
|
||||
SUBSYSTEM=="net", ACTION=="add", DRIVERS=="?*", ATTR{address}=="52:54:00:12:01:01", KERNEL=="eth*", NAME="custom_name"
|
||||
'';
|
||||
});
|
||||
systemd.network.links."10-custom_name" = {
|
||||
matchConfig.MACAddress = "52:54:00:12:01:01";
|
||||
linkConfig.Name = "custom_name";
|
||||
};
|
||||
};
|
||||
testScript = ''
|
||||
machine.succeed("udevadm settle")
|
||||
print(machine.succeed("ip link show dev custom_name"))
|
||||
'';
|
||||
};
|
||||
} else {
|
||||
name = "RenameInterface";
|
||||
nodes = { };
|
||||
testScript = "";
|
||||
};
|
||||
# even with disabled networkd, systemd.network.links should work
|
||||
# (as it's handled by udev, not networkd)
|
||||
link = {
|
||||
|
|
@ -1015,6 +998,21 @@ let
|
|||
machine.fail("ip address show wlan0 | grep -q ${testMac}")
|
||||
'';
|
||||
};
|
||||
caseSensitiveRenaming = {
|
||||
name = "CaseSensitiveRenaming";
|
||||
nodes.machine = { pkgs, ... }: {
|
||||
virtualisation.interfaces.enCustom.vlan = 11;
|
||||
networking = {
|
||||
useNetworkd = networkd;
|
||||
useDHCP = false;
|
||||
};
|
||||
};
|
||||
testScript = ''
|
||||
machine.succeed("udevadm settle")
|
||||
print(machine.succeed("ip link show dev enCustom"))
|
||||
machine.wait_until_succeeds("ip link show dev enCustom | grep -q '52:54:00:12:0b:01")
|
||||
'';
|
||||
};
|
||||
};
|
||||
|
||||
in mapAttrs (const (attrs: makeTest (attrs // {
|
||||
|
|
|
|||
Loading…
Reference in a new issue