lib/config/options+legacy: add bgp

nix/lib/config/legacy.nix

@@ -121,14 +121,25 @@ in
 
           ospf =
             let
-              hostPillar = self.lib.saltPillarFor name;
-              ospfConf = hostPillar.ospf;
-            in lib.optionalAttrs (hostPillar ? ospf && ospfConf ? stubnets-inet) {
+              ospfConf = ctPillar.ospf;
+            in lib.optionalAttrs (ctPillar ? ospf && ospfConf ? stubnets-inet) {
               stubNets4 = ospfConf.stubnets-inet;
-            } // lib.optionalAttrs (hostPillar ? ospf && ospfConf ? stubnets-inet6) {
+            } // lib.optionalAttrs (ctPillar ? ospf && ospfConf ? stubnets-inet6) {
             stubNets6 = ospfConf.stubnets-inet6;
             };
 
+          bgp =
+            if ctPillar ? bgp
+            then
+              let
+                bgpConf = ctPillar.bgp;
+              in {
+                inherit (bgpConf) asn;
+                peers4 = bgpConf.peers-inet;
+                peers6 = bgpConf.peers-inet6;
+              }
+            else null;
+
           forwardPorts =
             if ctPillar ? port-forwarding
             then map ({ proto, port, to }: {

nix/lib/config/options.nix

@@ -221,6 +221,32 @@ let
           }
         ));
       };
+      bgp = mkOption {
+        default = null;
+        type = with types; nullOr (submodule {
+          options = bgpOpts;
+        });
+      };
+    };
+  };
+  bgpPeerOpts = { name, ... }: {
+    options = {
+      asn = mkOption {
+        type = types.int;
+      };
+    };
+  };
+  bgpOpts = {
+    asn = mkOption {
+      type = types.int;
+    };
+    peers4 = mkOption {
+      type = with types; attrsOf (submodule bgpPeerOpts);
+      default = {};
+    };
+    peers6 = mkOption {
+      type = with types; attrsOf (submodule bgpPeerOpts);
+      default = {};
     };
   };
 in