systemd-networkd: add bridge VLANs to DHCP server test

1 files changed, 53 insertions, 2 deletions

diff --git a/nixos/tests/systemd-networkd-dhcpserver.nix b/nixos/tests/systemd-networkd-dhcpserver.nix
index b52c1499718b7..a016f059456e1 100644
--- a/nixos/tests/systemd-networkd-dhcpserver.nix
+++ b/nixos/tests/systemd-networkd-dhcpserver.nix
@@ -1,6 +1,12 @@
 # This test predominantly tests systemd-networkd DHCP server, by
 # setting up a DHCP server and client, and ensuring they are mutually
 # reachable via the DHCP allocated address.
+# Two DHCP servers are set up on bridge VLANs, testing to make sure that
+# bridge VLAN settings are correctly applied.
+#
+# br0 ----untagged---v
+#                    +---PVID 1+VLAN 2---[bridge]---PVID 2---eth1
+# vlan2 ---VLAN 2----^
 import ./make-test-python.nix ({pkgs, ...}: {
   name = "systemd-networkd-dhcpserver";
   meta = with pkgs.lib.maintainers; {
@@ -16,6 +22,28 @@ import ./make-test-python.nix ({pkgs, ...}: {
         firewall.enable = false;
       };
       systemd.network = {
+        netdevs = {
+          br0 = {
+            enable = true;
+            netdevConfig = {
+              Name = "br0";
+              Kind = "bridge";
+            };
+            extraConfig = ''
+              [Bridge]
+              VLANFiltering=yes
+              DefaultPVID=none
+            '';
+          };
+          vlan2 = {
+            enable = true;
+            netdevConfig = {
+              Name = "vlan2";
+              Kind = "vlan";
+            };
+            vlanConfig.Id = 2;
+          };
+        };
         networks = {
           # systemd-networkd will load the first network unit file
           # that matches, ordered lexiographically by filename.
@@ -24,9 +52,32 @@ import ./make-test-python.nix ({pkgs, ...}: {
           # however, hence why this network is named such.
           "01-eth1" = {
             name = "eth1";
+            networkConfig.Bridge = "br0";
+            bridgeVLANs = [
+              { bridgeVLANConfig = { PVID = 2; EgressUntagged = 2; }; }
+            ];
+          };
+          "02-br0" = {
+            name = "br0";
             networkConfig = {
               DHCPServer = true;
               Address = "10.0.0.1/24";
+              VLAN = ["vlan2"];
+            };
+            dhcpServerConfig = {
+              PoolOffset = 100;
+              PoolSize = 1;
+            };
+            bridgeVLANs = [
+              { bridgeVLANConfig = { PVID = 1; EgressUntagged = 1; }; }
+              { bridgeVLANConfig = { VLAN = 2; }; }
+            ];
+          };
+          "02-vlan2" = {
+            name = "vlan2";
+            networkConfig = {
+              DHCPServer = true;
+              Address = "10.0.2.1/24";
             };
             dhcpServerConfig = {
               PoolOffset = 100;
@@ -52,7 +103,7 @@ import ./make-test-python.nix ({pkgs, ...}: {
     start_all()
     router.wait_for_unit("systemd-networkd-wait-online.service")
     client.wait_for_unit("systemd-networkd-wait-online.service")
-    client.wait_until_succeeds("ping -c 5 10.0.0.1")
-    router.wait_until_succeeds("ping -c 5 10.0.0.100")
+    client.wait_until_succeeds("ping -c 5 10.0.2.1")
+    router.wait_until_succeeds("ping -c 5 10.0.2.100")
   '';
 })