Add counters for BSSMAP cipher mode messages

Count COMPLETE and REJECT messages. Besides general troubleshooting
that's also useful for TTCN-3 tests to check that OsmoMSC processed
those messages as expected.

Change-Id: I5822b2b38b64f1a691b26c926a8e2bece21dc624
Related: OS#3187

1 files changed, 6 insertions, 0 deletions

diff --git a/src/libmsc/a_iface_bssap.c b/src/libmsc/a_iface_bssap.c
index 4666ae3a6..282fd73a9 100644
--- a/src/libmsc/a_iface_bssap.c
+++ b/src/libmsc/a_iface_bssap.c
@@ -400,6 +400,7 @@ static int bssmap_rx_ciph_compl(struct gsm_subscriber_connection *conn, struct m
 	 * This needs to be discussed further! */
 
 	uint8_t alg_id = 1;
+	struct rate_ctr_group *msc = conn->network->msc_ctrs;
 
 	LOGPCONN(conn, LOGL_DEBUG, "Rx BSSMAP CIPHER MODE COMPLETE\n");
 
@@ -414,6 +415,8 @@ static int bssmap_rx_ciph_compl(struct gsm_subscriber_connection *conn, struct m
 		msg = NULL;
 	}
 
+	rate_ctr_inc(&msc->ctr[MSC_CTR_BSSMAP_CIPHER_MODE_COMPLETE]);
+
 	/* Hand over cipher mode complete message to the MSC */
 	msc_cipher_mode_compl(conn, msg, alg_id);
 
@@ -425,6 +428,7 @@ static int bssmap_rx_ciph_rej(struct gsm_subscriber_connection *conn,
 			      struct msgb *msg, struct tlv_parsed *tp)
 {
 	enum gsm0808_cause cause;
+	struct rate_ctr_group *msc = conn->network->msc_ctrs;
 
 	LOGPCONN(conn, LOGL_NOTICE, "RX BSSMAP CIPHER MODE REJECT\n");
 
@@ -433,6 +437,8 @@ static int bssmap_rx_ciph_rej(struct gsm_subscriber_connection *conn,
 		return -EINVAL;
 	}
 
+	rate_ctr_inc(&msc->ctr[MSC_CTR_BSSMAP_CIPHER_MODE_REJECT]);
+
 	/* FIXME: add support for 2-byte Cause values using libosmocore functions */
 	cause = *TLVP_VAL(tp, GSM0808_IE_CAUSE);
 	LOGPCONN(conn, LOGL_NOTICE, "Cipher mode rejection cause: %s\n", gsm0808_cause_name(cause));