si: Add a config option to disable SI2ter/SI2bis/SI5ter/SI5bis messages
The iPhone5 (US) appears to have some issues with the SIs generated,
or the nanoBTS is not sending them correctly.
Add a configurable hack to put all bands into the SI2/SI5 message.
It is enabled by the bts VTY command 'force-combined-si'.
This is a quick change without much reflection and watching for side
effects. I have verfied that a network with ARFCN 134 and neighbors
ARFCN 130 and 512 do not get generate the SI2ter and announce everything
inside the SI2.
This patch is conceptually based on 'si: Add a hack to disable
SI2ter/SI2bis/SI5ter/SI5bis messages' (692daaf2d2).
Ticket: OW#1062
Sponsored-by: On-Waves ehf
diff --git a/openbsc/src/libbsc/system_information.c b/openbsc/src/libbsc/system_information.c
index c901a4a..aa1cb8d 100644
--- a/openbsc/src/libbsc/system_information.c
+++ b/openbsc/src/libbsc/system_information.c
@@ -70,8 +70,11 @@
static int use_arfcn(const struct gsm_bts *bts, const int bis, const int ter,
const int pgsm, const int arfcn)
{
+ if (bts->force_combined_si)
+ return !bis && !ter;
if (!bis && !ter && band_compatible(bts, arfcn))
return 1;
+ /* Correct but somehow broken with either the nanoBTS or the iPhone5 */
if (bis && pgsm && band_compatible(bts, arfcn) && (arfcn < 1 || arfcn > 124))
return 1;
if (ter && !band_compatible(bts, arfcn))