Change in osmo-pcu[master]: Optimize PAGING-CS PDCH set selection when target MS is known

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fixeria gerrit-no-reply at lists.osmocom.org
Tue May 18 20:00:48 UTC 2021


fixeria has posted comments on this change. ( https://gerrit.osmocom.org/c/osmo-pcu/+/24224 )

Change subject: Optimize PAGING-CS PDCH set selection when target MS is known
......................................................................


Patch Set 1:

(8 comments)

https://gerrit.osmocom.org/c/osmo-pcu/+/24224/1/src/bts.cpp 
File src/bts.cpp:

https://gerrit.osmocom.org/c/osmo-pcu/+/24224/1/src/bts.cpp@372 
PS1, Line 372: 	/* We known the target MS for the paging req, send the req only on PDCH
IMO, it would be a lot more readable if we had to separate functions for both cases:

  - when GprsMs is not NULL, and we know where to page;
  - when GprsMs is NULL, and we simply page everywhere.


https://gerrit.osmocom.org/c/osmo-pcu/+/24224/1/src/bts.cpp@376 
PS1, Line 376: 8
ARRAY_SIZE(ms->ul_tbf->pdch)


https://gerrit.osmocom.org/c/osmo-pcu/+/24224/1/src/bts.cpp@387 
PS1, Line 387: 8
ARRAY_SIZE(ms->dl_tbf->pdch)


https://gerrit.osmocom.org/c/osmo-pcu/+/24224/1/src/bts.cpp@447 
PS1, Line 447: 				LOGPDCH(&bts->trx[trx].pdch[ts], DRLCMAC, LOGL_INFO, "Paging on PACCH\n");
This looks more like a separate change to me, why doing it here?


https://gerrit.osmocom.org/c/osmo-pcu/+/24224/1/src/gprs_bssgp_pcu.c 
File src/gprs_bssgp_pcu.c:

https://gerrit.osmocom.org/c/osmo-pcu/+/24224/1/src/gprs_bssgp_pcu.c@183 
PS1, Line 183: BSSGP_CAUSE_COND_IE_ERR
BSSGP_CAUSE_MISSING_MAND_IE


https://gerrit.osmocom.org/c/osmo-pcu/+/24224/1/src/gprs_bssgp_pcu.c@190 
PS1, Line 190: BSSGP_CAUSE_COND_IE_ERR
BSSGP_CAUSE_INV_MAND_INF


https://gerrit.osmocom.org/c/osmo-pcu/+/24224/1/src/gprs_bssgp_pcu.c@211 
PS1, Line 211: 	if (TLVP_PRESENT(tp, BSSGP_IE_TLLI))
Are we safe against an evil SGSN here? ;)


https://gerrit.osmocom.org/c/osmo-pcu/+/24224/1/src/gprs_bssgp_pcu.c@230 
PS1, Line 230: specific BTS
How can you be sure that the MS is listening to a specific BTS? You only get notified when it enters another RAC, so what if the MS has switched to another BTS while you still have a GprsMs for it in the old BTS?



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Gerrit-Project: osmo-pcu
Gerrit-Branch: master
Gerrit-Change-Id: Iea46d5321a29d800813b1aa2bf4ce175ce45e2cf
Gerrit-Change-Number: 24224
Gerrit-PatchSet: 1
Gerrit-Owner: pespin <pespin at sysmocom.de>
Gerrit-Reviewer: Jenkins Builder
Gerrit-Reviewer: daniel <dwillmann at sysmocom.de>
Gerrit-Reviewer: dexter <pmaier at sysmocom.de>
Gerrit-Reviewer: fixeria <vyanitskiy at sysmocom.de>
Gerrit-Reviewer: laforge <laforge at osmocom.org>
Gerrit-Reviewer: neels <nhofmeyr at sysmocom.de>
Gerrit-Comment-Date: Tue, 18 May 2021 20:00:48 +0000
Gerrit-HasComments: Yes
Gerrit-Has-Labels: No
Gerrit-MessageType: comment
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