osmo-pcu[master]: Refactoring: New function to calculate EGPRS DL window size

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Neels Hofmeyr gerrit-no-reply at lists.osmocom.org
Fri Sep 9 02:42:15 UTC 2016


Patch Set 1:

(2 comments)

https://gerrit.osmocom.org/#/c/832/1/src/tbf.cpp
File src/tbf.cpp:

Line 1253: 			name(), ws);
(technically, you added an indent here)


Line 1255: 	window()->set_ws(ws);
After figuring out window() and the 'direction' member,
I'm not clear yet: does this function also apply to
GPRS_RLCMAC_UL_TBF?

It seems correct to use window() to decide for DL,
since gprs_rlcmac_tbf is a parent class to gprs_rlcmac_dl_tbf.
But are you sure it belongs in the parent class and applies to UL as well?

After all, you're using dl_slots() above, which always
returns 0 for UL. This makes me think you should rather
add this function to gprs_rlcmac_dl_tbf?

I see that the other patch modifies gprs_rlcmac_tbf::update(),
which would have to do a slightly ugly cast then (or would
need to become a virtual function and overloaded in dl).

Do you have any insights that clarify this / that justify
having this calculation for both DL and UL?


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Gerrit-MessageType: comment
Gerrit-Change-Id: I7c7777d43f843bbd3421503fc2a8600f148ca035
Gerrit-PatchSet: 1
Gerrit-Project: osmo-pcu
Gerrit-Branch: master
Gerrit-Owner: arvind.sirsikar <arvind.sirsikar at radisys.com>
Gerrit-Reviewer: Harald Welte <laforge at gnumonks.org>
Gerrit-Reviewer: Holger Freyther <holger at freyther.de>
Gerrit-Reviewer: Jenkins Builder
Gerrit-Reviewer: Neels Hofmeyr <nhofmeyr at sysmocom.de>
Gerrit-HasComments: Yes



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