This patch set realises a new loss intervals database,
updating and extending existing loss handling functionality.
It is also an optimised structure which uses on-demand allocation.
This means that no extra memory is consumed when the link is loss-free.
Patch #1: Introduces the new, ring-buffer based data structure plus a
few basic inline functions.
Patch #2: Provides accessor functions and macros (OO-like encapsulation).
Patch #3: Allocation/de-allocation routines and initialisation/cleanup routines.
Patch #4: Recomputation of I_mean (new algorithm + revised with regard to RFC
4342).
Patch #5: Insert/update routines for the database.
Patch #6: Integration with RX receiver history structure. This is one of the key
points in the patch set - loss detection/handling are taken care of by
the TFRC module (dccp_tfrc_lib) now. This patch integrates the new
loss
intervals structure into the TFRC module.
Patch #7: Let calling module compute first loss interval. TFRC needs a value for
the first loss interval length as a seed. The problem which we have
been
discussing with this is that this generates a close integration of
CCID3
code with TFRC code. The approach taken here is to separate the
interfaces
by using a function pointer.
I believe that this is a useful approach: the calling module (be it
CCID3,
CCID3-FR, CCID4 ...) knows best its own internals - last RTT
estimate, last
time feedback was sent etc; the TFRC module doesn't need to know
these details
and just calls the function via the function pointer to obtain the
first
loss interval length.
Patch #8: Fixes and simplifies header includes with regard to the services
exported by
the TFRC module. This has been updated to reflect the recent changes
in
Arnaldos tree.
Patch #9: And finally ... the integration of the Loss Interval Database with
the CCID 3
code. This is analogous to patch #6; but the difference is that, with
regard to
patch #8, RX history and LI database are no longer separate units,
but rather
a whole which is offered through the TFRC module.
This is almost everything, only one bundle left which I will send tomorrow or
after we
have discussed the other things. With the next bundle, the patch set is
complete, compiles
and works.
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