1218545Slstewart$FreeBSD$ 2218545Slstewart 3218545SlstewartAn example Khelp module which uses the helper hook points available in the TCP 4218545Slstewartstack to calculate a per-connection count of inbound and outbound packets when 5218545Slstewartthe connection is in the established state. The code is verbosely documented in 6218545Slstewartan attempt to explain how everything fits together. 7