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TS 04.06 specifies a N200 re-transmission counter that depends on the
channel type, which we didn't care about at all so far. Let's have the
caller tell us the channel type so we can internally look up the correct
N200 value for it.
At the same time, permit the user to specify T200 re-transmission timer
values for each SAPI on both DCCH and ACCH, which is required at least
in the BTS as per GSM TS 12.21. Also, extend the timer resolution of
the API from seconds to milli-seconds, which is more applicable as
particularly on the FACCH the recommended values are in the 200ms range.
Change-Id: I90fdc4dd4720d4e02213197c894eb0a55a39158c
Related: OS#3906
Related: OS#2294
Related: OS#4037
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Considering the various styles and implications found in the sources, edit
scores of files to follow the same API doc guidelines around the doxygen
grouping and the \file tag.
Many files now show a short description in the generated API doc that was so
far only available as C comment.
The guidelines and reasoning behind it is documented at
https://osmocom.org/projects/cellular-infrastructure/wiki/Guidelines_for_API_documentation
In some instances, remove file comments and add to the corresponding group
instead, to be shared among several files (e.g. bitvec).
Change-Id: Ifa70e77e90462b5eb2b0457c70fd25275910c72b
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Especially for short descriptions, it is annoying to have to type \brief for
every single API doc.
Drop all \brief and enable the AUTOBRIEF feature of doxygen, which always takes
the first sentence of an API doc as the brief description.
Change-Id: I11a8a821b065a128108641a2a63fb5a2b1916e87
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Signed-off-by: Sylvain Munaut <tnt@246tNt.com>
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This API allows you to get the lapdm_datalink for a SAPI. It's needed in
the lapdm_test, so make it public.
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Signed-off-by: Sylvain Munaut <tnt@246tNt.com>
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Timing advance and power level indicated by MS (measurement reports)
and BTS (SI 5/6) are now stored for use at ACCH data link connection.
This is part of a set of commit to fix LAPDm to handle datalink
connection on ACCH (SAPI 3)
This is required to transfer SMS on SACCH of TCH/f or SDCCH/8 (4).
Written-by: Andreas Eversberg <jolly@eversberg.eu>
Signed-off-by: Sylvain Munaut <tnt@246tNt.com>
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This is part of a set of commit to fix LAPDm to handle datalink
connection on ACCH (SAPI 3)
This is required to transfer SMS on SACCH of TCH/f or SDCCH/8 (4).
Written-by: Andreas Eversberg <jolly@eversberg.eu>
Signed-off-by: Sylvain Munaut <tnt@246tNt.com>
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Instead of mixing together the GSM layer 1 interface and RSL interface
with the implementation of LAPD, the core function of LAPD is now
extracted from LAPDm. The core implementation is now in lapd_core.c
and lapd_core.h respectively.
The lapd_core.c implements exactly one datalink instance for one SAP.
The surrounding implementation "lapdm.c" codes/decodes the layer 2
headers and handles multiplexing and datalink instances, as well as
translates primitives from/to RSL layer.
lapd_core.c can now be used for other LAPD implementations. (ISDN/ABIS)
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