Signed-off-by: Raphael Defosseux <raphael.defosseux@eurecom.fr>

All previous commits for rlc v2 are proably
not functional or even compiling.

Not sure if the problem is in the MAC layer or in the RLC v2 layer.
Maybe the buffer status reporting in RLC v2 is not good. Let's remove
two AssertFatal in the MAC for the time being.

Not very clean, but will do the job for the time being.

Limitation: this fix only works if there is only one eNB,
because we force module_id = 0 in the function deliver_sdu where
(as the code is today) we have no way to know which module_id is
concerned. More generally, the rlc v2 does not work with more than
1 eNB.

The UE code to compute BSR is too complex, has to be reworked/simplified.
This commit just removes the assert, does not solve anything.

The old method was wrong.
The new method is better, but not accurate, especially when the
TX buffer contains SDU of size > 2047 bytes.

Plus it's probably too slow.

To be refined at some point.

simply ignore the error

maybe not the best solution

This commit introduces an alternative RLC implementation
based on 36.322 version 8. AM and UM done, TM not done.

See openair2/LAYER2/rlc_v2/TODO for missing parts.

Instead of looping over UEs and all DL config Req/HI DCI0, loop first
over all DL config Req/HI DCI0, and for each, match UE.  Lowers CPU
traffic for high traffic situations.