* Added an offset/sequence field to the net_buffer - this can and will be used

by the TCP implementation for its reorder and retransmit queues.
* The ipv4_fragment is no longer needed, as we can use the above field there
  as well - this saves one extra allocation per received fragment.


git-svn-id: file:///srv/svn/repos/haiku/haiku/trunk@19369 a95241bf-73f2-0310-859d-f6bbb57e9c96

headers/private/net/net_buffer.h

@@ -22,6 +22,14 @@ typedef struct net_buffer {
 	struct sockaddr_storage source;
 	struct sockaddr_storage destination;
 	struct net_interface *interface;
+	union {
+		struct {
+			uint16	start;
+			uint16	end;
+		}		fragment;
+		uint32	sequence;
+		uint32	offset;
+	};
 	uint32	flags;
 	uint32	size;
 	uint8	protocol;