confd: update DHCP YANG model, new options, arping, and route metric

Signed-off-by: Joachim Wiberg <troglobit@gmail.com>

src/confd/yang/infix-dhcp-client@2023-05-22.yang

@@ -15,6 +15,66 @@ module infix-dhcp-client {
     reference     "rfc2131 rfc7950";
   }
 
+  /*
+   * Typedefs
+   */
+
+  typedef route-preference {
+    type uint32;
+    description "This type is used for route preferences (metric).";
+  }
+
+  typedef dhcp-options {
+    type union {
+      type uint8 {
+	range "0..61";
+      }
+      type enumeration {
+	enum subnet {
+	  value 1;
+	  description "Subnet (IP address and netmask)";
+	}
+	enum router {
+	  value 3;
+	  description "Default route(s)";
+	}
+	enum dns {
+	  value 6;
+	  description "DNS server";
+	}
+	enum hostname {
+	  value 12;
+	  description "Hostname";
+	}
+	enum domain {
+	  value 15;
+	  description "Domain name";
+	}
+	enum broadcast {
+	  value 28;
+	  description "Broadcast address";
+	}
+	enum ntpsrv {
+	  value 42;
+	  description "NTP server";
+	}
+	enum address {
+	  value 50;
+	  description "Requested (previously cached) address";
+	}
+	enum clientid {
+	  value 61;
+	  description "Client ID (default MAC, and option 12)";
+	}
+	enum staticroutes {
+	  value 121;
+	  description "Classless static routes";
+	}
+      }
+    }
+    description "Supported DHCP client request options";
+  }
+
   /*
    * Data Nodes
    */
@@ -44,6 +104,24 @@ module infix-dhcp-client {
 	type string;
 	description "Optional Client ID, option 61, default: MAC address.";
       }
+      leaf arping {
+        type boolean;
+        default "true";
+        description "ARP for lease to check for IP address collisions (slow).";
+      }
+      leaf-list options {
+	type dhcp-options;
+	description "DHCP options to request (and accept), default: supported.";
+      }
+      leaf route-preference {
+	type route-preference;
+	default 100;
+	description
+	  "The metric any route is installed with, both option 33 and 121.
+           The default (100) is based on a plain Ethernet interface, the
+           interface type determines this, e.g. a WiFi interface would be
+           metric 500.";
+      }
     }
   }
 }