Add MPLS PDU and hook it up with ICMP extensions

src/icmp_extension.cpp

@@ -4,6 +4,7 @@
 #include "exceptions.h"
 #include "utils.h"
 #include "memory_helpers.h"
+#include "mpls.h"
 
 using std::runtime_error;
 
@@ -135,6 +136,12 @@ void ICMPExtensionsStructure::add_extension(const ICMPExtension& extension) {
     extensions_.push_back(extension);
 }
 
+void ICMPExtensionsStructure::add_extension(MPLS& mpls) {
+    ICMPExtension extension(1, 1);
+    extension.payload(mpls.serialize());
+    add_extension(extension);
+}
+
 void ICMPExtensionsStructure::serialize(uint8_t* buffer, uint32_t buffer_size) {
     OutputMemoryStream stream(buffer, buffer_size);
     uint8_t* original_ptr = buffer;