[PATCH] osmo-pcu[master]: Fix EGPRS DL window calculation during tbf update

[arvind.sirsikar]

Hello Neels Hofmeyr, Jenkins Builder, Holger Freyther,

I'd like you to reexamine a change.  Please visit

    https://gerrit.osmocom.org/798

to look at the new patch set (#8).

Fix EGPRS DL window calculation during tbf update

Earlier there was no handling for recalculation of DL window
size during tbf update. Which has been fixed in this patch.

Related: OS#1808
Change-Id: I41aa807068520460fd665a55e3529e60f6bbb630
---
M src/tbf.cpp
M tests/tbf/TbfTest.cpp
M tests/tbf/TbfTest.err
3 files changed, 10 insertions(+), 6 deletions(-)


  git pull ssh://gerrit.osmocom.org:29418/osmo-pcu refs/changes/98/798/8

diff --git a/src/tbf.cpp b/src/tbf.cpp
index cbc0710..97696cb 100644
--- a/src/tbf.cpp
+++ b/src/tbf.cpp
@@ -376,6 +376,12 @@
 		return -rc;
 	}
 
+	if (is_egprs_enabled()) {
+		gprs_rlcmac_dl_tbf *dl_tbf = as_dl_tbf(this);
+		if (dl_tbf)
+			dl_tbf->egprs_calc_window_size();
+	}
+
 	return 0;
 }
 
diff --git a/tests/tbf/TbfTest.cpp b/tests/tbf/TbfTest.cpp
index cdf8ff4..ea6dcdd 100644
--- a/tests/tbf/TbfTest.cpp
+++ b/tests/tbf/TbfTest.cpp
@@ -1816,17 +1816,14 @@
 
 	dl_tbf->update();
 
-	/*
-	 * TODO: Should not expect window size as 192.
-	 * should be fixed in subsequent patch
-	 */
+	/* window size should be 384 */
 	OSMO_ASSERT(dl_tbf != NULL);
 	fprintf(stderr, "DL TBF slots: 0x%02x, N: %d, WS: %d\n",
 		dl_tbf->dl_slots(),
 		pcu_bitcount(dl_tbf->dl_slots()),
 		dl_tbf->window()->ws());
 	OSMO_ASSERT(pcu_bitcount(dl_tbf->dl_slots()) == 4);
-	OSMO_ASSERT(dl_tbf->window()->ws() == 128 + 1 * 64);
+	OSMO_ASSERT(dl_tbf->window()->ws() == 128 + 4 * 64);
 
 	tbf_free(dl_tbf);
 
diff --git a/tests/tbf/TbfTest.err b/tests/tbf/TbfTest.err
index a83353c..d5e8cfa 100644
--- a/tests/tbf/TbfTest.err
+++ b/tests/tbf/TbfTest.err
@@ -6400,7 +6400,8 @@
 PDCH(TS 4, TRX 0): Attaching TBF(TFI=0 TLLI=0x00000000 DIR=DL STATE=NULL EGPRS), 1 TBFs, USFs = 00, TFIs = 00000001.
 - Assigning DL TS 5
 PDCH(TS 5, TRX 0): Attaching TBF(TFI=0 TLLI=0x00000000 DIR=DL STATE=NULL EGPRS), 1 TBFs, USFs = 00, TFIs = 00000001.
-DL TBF slots: 0x3c, N: 4, WS: 192
+TBF(TFI=0 TLLI=0x00000000 DIR=DL STATE=NULL EGPRS): Setting EGPRS window size to 384
+DL TBF slots: 0x3c, N: 4, WS: 384
 TBF(TFI=0 TLLI=0x00000000 DIR=DL STATE=NULL EGPRS) changes state from NULL to RELEASING
 TBF(TFI=0 TLLI=0x00000000 DIR=DL STATE=RELEASING EGPRS) free
 PDCH(TS 2, TRX 0): Detaching TBF(TFI=0 TLLI=0x00000000 DIR=DL STATE=RELEASING EGPRS), 0 TBFs, USFs = 00, TFIs = 00000000.

-- 
To view, visit https://gerrit.osmocom.org/798
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Gerrit-MessageType: newpatchset
Gerrit-Change-Id: I41aa807068520460fd665a55e3529e60f6bbb630
Gerrit-PatchSet: 8
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-Reviewer: arvind.sirsikar <arvind.sirsikar at radisys.com>