Merge pull request #257510 from ign0tus/fix/wake-on-lan-policy

Fix: WakeOnLan policy

nixos/lib/systemd-lib.nix

···
     optional (attr ? ${name} && !elem attr.${name} values)
       "Systemd ${group} field `${name}' cannot have value `${toString attr.${name}}'.";
 
+  assertValuesSomeOfOr = name: values: default: group: attr:
+    optional (attr ? ${name} && !(all (x: elem x values) (splitString " " attr.${name}) || attr.${name} == default))
+      "Systemd ${group} field `${name}' cannot have value `${toString attr.${name}}'.";
+
   assertHasField = name: group: attr:
     optional (!(attr ? ${name}))
       "Systemd ${group} field `${name}' must exist.";

nixos/modules/system/boot/networkd.nix

···
         (assertByteFormat "BitsPerSecond")
         (assertValueOneOf "Duplex" ["half" "full"])
         (assertValueOneOf "AutoNegotiation" boolValues)
-        (assertValueOneOf "WakeOnLan" ["phy" "unicast" "multicast" "broadcast" "arp" "magic" "secureon" "off"])
+        (assertValuesSomeOfOr "WakeOnLan" ["phy" "unicast" "multicast" "broadcast" "arp" "magic" "secureon"] "off")
         (assertValueOneOf "Port" ["tp" "aui" "bnc" "mii" "fibre"])
         (assertValueOneOf "ReceiveChecksumOffload" boolValues)
         (assertValueOneOf "TransmitChecksumOffload" boolValues)

nixos/modules/tasks/network-interfaces-scripted.nix

···
         } // optionalAttrs (i.mtu != null) {
           MTUBytes = toString i.mtu;
         } // optionalAttrs (i.wakeOnLan.enable == true) {
-          WakeOnLan = "magic";
+          WakeOnLan = concatStringsSep " " i.wakeOnLan.policy;
         };
       };
     in listToAttrs (map createNetworkLink interfaces);

nixos/modules/tasks/network-interfaces.nix

···
           default = false;
           description = lib.mdDoc "Whether to enable wol on this interface.";
         };
+        policy = mkOption {
+          type = with types; listOf (
+            enum ["phy" "unicast" "multicast" "broadcast" "arp" "magic" "secureon"]
+          );
+          default = ["magic"];
+          description = lib.mdDoc ''
+            The [Wake-on-LAN policy](https://www.freedesktop.org/software/systemd/man/systemd.link.html#WakeOnLan=)
+            to set for the device.
+
+            The options are
+            - `phy`: Wake on PHY activity
+            - `unicast`: Wake on unicast messages
+            - `multicast`: Wake on multicast messages
+            - `broadcast`: Wake on broadcast messages
+            - `arp`: Wake on ARP
+            - `magic`: Wake on receipt of a magic packet
+          '';
+        };
       };
     };