sms/dtap: Add log messages to analyse SMS message loss
Incoming DTAP messages from MS are discarded during silent calls,
which leads to the repeated delivery of SMS since the ACKs are not
being processed.
This patch adds some log messages that have been helpful to track
this down.
Sponsored-by: On-Waves ehf
diff --git a/openbsc/src/libmsc/silent_call.c b/openbsc/src/libmsc/silent_call.c
index cdc82b5..4462dfc 100644
--- a/openbsc/src/libmsc/silent_call.c
+++ b/openbsc/src/libmsc/silent_call.c
@@ -76,6 +76,7 @@
int silent_call_rx(struct gsm_subscriber_connection *conn, struct msgb *msg)
{
/* FIXME: do something like sending it through a UDP port */
+ LOGP(DLSMS, LOGL_NOTICE, "Discarding L3 message from a silent call.\n");
return 0;
}
@@ -109,6 +110,7 @@
}
/* otherwise, reroute */
+ LOGP(DLSMS, LOGL_INFO, "Rerouting L3 message from a silent call.\n");
return 1;
}
@@ -136,6 +138,9 @@
if (!conn->silent_call)
return -EINVAL;
+ DEBUGPC(DLSMS, "Stopping silent call using Timeslot %u on ARFCN %u\n",
+ conn->lchan->ts->nr, conn->lchan->ts->trx->arfcn);
+
conn->silent_call = 0;
msc_release_connection(conn);