TS 24.007, TS 24.008, TS 44.064 nor TS 44.065 explain how the TLLI
update happening during GMM RAU propagates to the SNDCP layer.
GMM only has interfaces towards LLC and GRR, and uses LLGMM-Assign.Req
and GMMRR-Assign.req to update the TLLI in the respective layers.
This patch adds a new primitive in the LL interface (LLC->SNDCP)
LL-Assign.ind to propagate the LLGM-Assign.req received from
GMM towards SNDCP, so that it can use the new TLLI in order to address
the specific MS.
Change-Id: Icb858f5397414b6d4183c21f13d35c0166ca7635
As seen in TS 23.007 C.6.
We still don't need/want to implement ABM (acknowledged mode), hence
only the interface related parts are implemented, and transmit of SABM
message is left for the future.
Change-Id: I27aff368f4a70d30c23523946d72a751e100f298
Otherwise if a test includes {layer_name}_private.h from several
libraries to use private APIs it will fail due to colliding g_ctx
pointers of different types.
Change-Id: Ib8a844551452b79bdb3a81968ffc1fd42ee1c5d9
This allows forwarding GRR-UNITDATA.ind/req up & down the stack, to be
on pair with the BSSGP LLC SAP.
Change-Id: I6a4454b4aa2c96e1f4ce7e2a5d5aba8ec1cf3f60
This commit follows a similar approach to Change-Id
I588eb576b2703262f4ab9566ec362920d8390cfd, this time targeting the SNDCP
layer, creating a new library for it.
This new library depends on headers from libosmo-gprs-llc since the
SNDCP spec takes the interface towards lower interfaces from same
llc_prim. It doesn't really call any API from the libosmo-gprs-llc
library to dispatch the primitive, that's left for the application, so
that it can be reused against other implementations.
Most of the SNDCP data structures and APIs are kept private and used
only internally. The Higher/lower layers are expected to interact with
it through the sndcp_prim API.
This commit also implements some of the code paths of the public API by
means on importing SNDCP code from osmo-sgsn.git commit
57b63875c762a784127a13becd1c2549ca6c5454.
The import of code cannot be done in a separate commit since existing code
in osmo-sgsn.git is low quality and has tons of layer violations in all
directions.
Hence, this commit aims at being an initial point of having some working
SNDCP stack by means of a few unit tests, but by no means aims to be a
total working implementation. Some code paths are missing; bugs are
expected at this point.
Change-Id: Ie05b5d721cf0a6147ed45c1feb75ad829865252b
Most of the existing (and added) data structures are kept private, since
most of those don't really need to be used outside internal code in the
library.
Most if not all the interaction from upper and lower layers towards LLC
is now done through the new llc_prim pubic interface. This interface is
based on 3GPP TS 44.064 section 7.1.2.
This commit also implements some of the code paths of the public API by
means on importing LLC code from osmo-sgsn.git commit
57b63875c762a784127a13becd1c2549ca6c5454.
The import of code cannot be done in a separate commit since existing code
in osmo-sgsn.git is low quality and has tons of layer violations in all
directions.
Hence, this commit aims at being an initial point of having some working
LLC stack by means of a few unit tests, but by no means aims to be a
total working implementation. Some code paths are missing; bugs are
expected at this point.
Related: OS#5502
Change-Id: I588eb576b2703262f4ab9566ec362920d8390cfd
Pau Espin