linux: add UDP socket options

Author: Cloudef

lib/std/os/linux.zig

@@ -3622,6 +3622,30 @@ pub const TCP = struct {
     pub const REPAIR_OFF_NO_WP = -1;
 };
 
+pub const UDP = struct {
+    /// Never send partially complete segments
+    pub const CORK = 1;
+    /// Set the socket to accept encapsulated packets
+    pub const ENCAP = 100;
+    /// Disable sending checksum for UDP6X
+    pub const NO_CHECK6_TX = 101;
+    /// Disable accepting checksum for UDP6
+    pub const NO_CHECK6_RX = 102;
+    /// Set GSO segmentation size
+    pub const SEGMENT = 103;
+    /// This socket can receive UDP GRO packets
+    pub const GRO = 104;
+};
+
+pub const UDP_ENCAP = struct {
+    pub const ESPINUDP_NON_IKE = 1;
+    pub const ESPINUDP = 2;
+    pub const L2TPINUDP = 3;
+    pub const GTP0 = 4;
+    pub const GTP1U = 5;
+    pub const RXRPC = 6;
+};
+
 pub const PF = struct {
     pub const UNSPEC = 0;
     pub const LOCAL = 1;