diff --git a/c_gen/templates/loci_dump.h b/c_gen/templates/loci_dump.h
index d44832a..9cc719c 100644
--- a/c_gen/templates/loci_dump.h
+++ b/c_gen/templates/loci_dump.h
@@ -96,6 +96,8 @@
 
 #define LOCI_DUMP_bitmap_128(writer, cookie, val) writer(cookie, "%" PRIx64 "%" PRIx64, (val).hi, (val).lo)
 
+#define LOCI_DUMP_checksum_128(writer, cookie, val) writer(cookie, "%016" PRIx64 "%016" PRIx64, (val).hi, (val).lo)
+
 /**
  * Generic version for any object
  */
diff --git a/c_gen/templates/loci_show.h b/c_gen/templates/loci_show.h
index a66c321..8241f3e 100644
--- a/c_gen/templates/loci_show.h
+++ b/c_gen/templates/loci_show.h
@@ -164,6 +164,8 @@
 
 #define LOCI_SHOW_bitmap_128(writer, cookie, val) writer(cookie, "%" PRIx64 "%" PRIx64, (val).hi, (val).lo)
 
+#define LOCI_SHOW_checksum_128(writer, cookie, val) writer(cookie, "%016" PRIx64 "%016" PRIx64, (val).hi, (val).lo)
+
 /**
  * Generic version for any object
  */
diff --git a/c_gen/templates/of_wire_buf.h b/c_gen/templates/of_wire_buf.h
index 117332c..f977004 100644
--- a/c_gen/templates/of_wire_buf.h
+++ b/c_gen/templates/of_wire_buf.h
@@ -900,6 +900,26 @@
 #define of_wire_buffer_bitmap_128_set(buf, offset, addr) \
     (of_wire_buffer_u64_set(buf, offset, addr.hi), of_wire_buffer_u64_set(buf, offset+8, addr.lo))
 
+/**
+ * Get a checksum_128 from a wire buffer
+ * @param wbuf The pointer to the wire buffer structure
+ * @param offset Offset in the wire buffer
+ * @param checksum Pointer to where to store the checksum_128
+ */
+
+#define of_wire_buffer_checksum_128_get(buf, offset, checksum) \
+    (of_wire_buffer_u64_get(buf, offset, &checksum->hi), of_wire_buffer_u64_get(buf, offset+8, &checksum->lo))
+
+/**
+ * Set a checksum_128 in a wire buffer
+ * @param wbuf The pointer to the wire buffer structure
+ * @param offset Offset in the wire buffer
+ * @param checksum The variable holding checksum_128 to store
+ */
+
+#define of_wire_buffer_checksum_128_set(buf, offset, checksum) \
+    (of_wire_buffer_u64_set(buf, offset, checksum.hi), of_wire_buffer_u64_set(buf, offset+8, checksum.lo))
+
 /* Relocate data from start offset to the end of the buffer to a new position */
 static inline void
 of_wire_buffer_move_end(of_wire_buffer_t *wbuf, int start_offset, int new_offset)