Here is a list of all documented files with brief descriptions:

[detail level 1234]

yaf-2.18.1
include
yaf
decode.h
picq.h	Generic Pickable Queue
ring.h
yafcore.h	YAF Core Library
yafhooks.h	Processing hook interface for YAF
yafrag.h	Fragment reassembly interface for YAF
yaftab.h	Flow generation interface for YAF
yaftime.h

YAF