rename gsm_encr to geran_encr, it is only applicable on GERAN

On UTRAN, Security Mode is used instead of Ciphering Command, which does not
feature an A5 algorithm id.

Change-Id: Idc7ca9da1aa13ae16f5db2cb1024676cbc770820

5 files changed, 9 insertions, 9 deletions

diff --git a/include/osmocom/msc/common_cs.h b/include/osmocom/msc/common_cs.h
index fddc6ece1..410f1022a 100644
--- a/include/osmocom/msc/common_cs.h
+++ b/include/osmocom/msc/common_cs.h
@@ -9,7 +9,7 @@ typedef int (*mncc_recv_cb_t)(struct gsm_network *, struct msgb *);
 
 #define MAX_A5_KEY_LEN	(128/8)
 
-struct gsm_encr {
+struct geran_encr {
 	uint8_t alg_id;
 	uint8_t key_len;
 	uint8_t key[MAX_A5_KEY_LEN];
diff --git a/include/osmocom/msc/gsm_data.h b/include/osmocom/msc/gsm_data.h
index 94a6ffdc9..864bc0ab9 100644
--- a/include/osmocom/msc/gsm_data.h
+++ b/include/osmocom/msc/gsm_data.h
@@ -125,7 +125,7 @@ struct gsm_subscriber_connection {
 	enum ran_type via_ran;
 
 	uint16_t lac;
-	struct gsm_encr encr;
+	struct geran_encr geran_encr;
 
 	/* "Temporary" storage for the case the VLR asked for Cipher Mode Command, but the MSC still
 	 * wants to request a Classmark Update first. */
diff --git a/src/libmsc/gsm_04_08.c b/src/libmsc/gsm_04_08.c
index 7dd303f29..6569a9a52 100644
--- a/src/libmsc/gsm_04_08.c
+++ b/src/libmsc/gsm_04_08.c
@@ -1663,12 +1663,12 @@ int msc_geran_set_cipher_mode(struct gsm_subscriber_connection *conn, bool umts_
 		memcpy(ei.key, tuple->vec.kc, sizeof(tuple->vec.kc));
 	ei.key_len = sizeof(tuple->vec.kc);
 
-	conn->encr = (struct gsm_encr){};
-	if (ei.key_len <= sizeof(conn->encr.key)) {
-		memcpy(conn->encr.key, ei.key, ei.key_len);
-		conn->encr.key_len = ei.key_len;
+	conn->geran_encr = (struct geran_encr){};
+	if (ei.key_len <= sizeof(conn->geran_encr.key)) {
+		memcpy(conn->geran_encr.key, ei.key, ei.key_len);
+		conn->geran_encr.key_len = ei.key_len;
 	}
-	/* conn->encr.alg_id remains unknown until we receive a Cipher Mode Complete from the BSC */
+	/* conn->geran_encr.alg_id remains unknown until we receive a Cipher Mode Complete from the BSC */
 
 	return a_iface_tx_cipher_mode(conn, &ei, retrieve_imeisv);
 }
diff --git a/src/libmsc/msc_vty.c b/src/libmsc/msc_vty.c
index 4f3ac04c7..401586ea3 100644
--- a/src/libmsc/msc_vty.c
+++ b/src/libmsc/msc_vty.c
@@ -499,7 +499,7 @@ static void vty_dump_one_conn(struct vty *vty, const struct gsm_subscriber_conne
 		conn->use_count,
 		conn->use_tokens,
 		conn->received_cm_service_request ? 'C' : '-',
-		conn->encr.alg_id,
+		conn->geran_encr.alg_id,
 		conn->fi ? osmo_fsm_inst_state_name(conn->fi) : "-",
 		VTY_NEWLINE);
 }
diff --git a/src/libmsc/osmo_msc.c b/src/libmsc/osmo_msc.c
index e3d7055bc..88a3dbba9 100644
--- a/src/libmsc/osmo_msc.c
+++ b/src/libmsc/osmo_msc.c
@@ -222,7 +222,7 @@ void msc_cipher_mode_compl(struct gsm_subscriber_connection *conn,
 		}
 	}
 
-	conn->encr.alg_id = alg_id;
+	conn->geran_encr.alg_id = alg_id;
 
 	ciph_res.cause = VLR_CIPH_COMPL;
 	vlr_subscr_rx_ciph_res(conn->vsub, &ciph_res);