tbf_dl: make preemptive retransmission optional
Since [1], OsmoPCU already starts to retransmit downlink blocks before
the MS has had a chance to receive them and/or send the related
acknowledgement in uplink. Make this optional with the new VTY option
"no dl-tbf-preemptive-retransmission".
[1] e25b5b91f60f20f61096bc6199a05b58ee6c6328 ("tbf: Only create dummy frames if necessary")
Related: OS#2408
Change-Id: Id08aed513d4033aa0d4324c6ce07cbb2852f2f92
diff --git a/src/bts.cpp b/src/bts.cpp
index 26dd401..60f74dd 100644
--- a/src/bts.cpp
+++ b/src/bts.cpp
@@ -216,6 +216,7 @@
{
memset(&m_bts, 0, sizeof(m_bts));
m_bts.bts = this;
+ m_bts.dl_tbf_preemptive_retransmission = true;
/* initialize back pointers */
for (size_t trx_no = 0; trx_no < ARRAY_SIZE(m_bts.trx); ++trx_no) {