osmux: Improve per-conn tx rate counters

Change-Id: If030f5d921bdfcfcd00b015b4a9e48bb3b04e721
diff --git a/include/osmocom/mgcp/mgcp_conn.h b/include/osmocom/mgcp/mgcp_conn.h
index 9ffa7dc..d9b38c0 100644
--- a/include/osmocom/mgcp/mgcp_conn.h
+++ b/include/osmocom/mgcp/mgcp_conn.h
@@ -186,7 +186,9 @@
 enum {
 	OSMUX_CHUNKS_RX_CTR,
 	OSMUX_OCTETS_RX_CTR,
-	OSMUX_DROPPED_AMR_PAYLOADS_CTR,
+	OSMUX_RTP_PACKETS_TX_CTR,
+	OSMUX_RTP_PACKETS_TX_DROPPED_CTR,
+	OSMUX_AMR_OCTETS_TX_CTR,
 	/* Only available in global stats: */
 	OSMUX_NUM_CONNECTIONS,
 	OSMUX_PACKETS_RX_CTR,
@@ -200,7 +202,9 @@
 static const struct rate_ctr_desc mgcp_conn_osmux_rate_ctr_desc[] = {
 	[OSMUX_CHUNKS_RX_CTR] = {"osmux:chunks_rx", "Inbound Osmux chunks."},
 	[OSMUX_OCTETS_RX_CTR] = {"osmux:octets_rx", "Inbound Osmux octets."},
-	[OSMUX_DROPPED_AMR_PAYLOADS_CTR] = {"osmux:dropped_amr_payloads", "Dropped outbound AMR payloads."}
+	[OSMUX_RTP_PACKETS_TX_CTR] = {"osmux:rtp_packets_tx", "Tx outbound RTP packets to encode as Osmux."},
+	[OSMUX_RTP_PACKETS_TX_DROPPED_CTR] = {"osmux:rtp_packets_tx_dropped", "Dropped Tx outbound RTP packets to encode as Osmux."},
+	[OSMUX_AMR_OCTETS_TX_CTR] = {"osmux:amr_octets_tx", "Tx outbound AMD payload octets."},
 };
 
 /* Aggregated Osmux connection stats. These are updated when an Osmux connection is freed.
@@ -208,7 +212,9 @@
 static const struct rate_ctr_desc all_osmux_conn_rate_ctr_desc[] = {
 	[OSMUX_CHUNKS_RX_CTR] = {"all_osmux:chunks_rx", "Inbound Osmux chunks."},
 	[OSMUX_OCTETS_RX_CTR] = {"all_osmux:octets_rx", "Inbound Osmux octets."},
-	[OSMUX_DROPPED_AMR_PAYLOADS_CTR] = {"all_osmux:dropped_amr_payloads", "Dropped outbound AMR payloads."},
+	[OSMUX_RTP_PACKETS_TX_CTR] = {"all_osmux:rtp_packets_tx", "Tx outbound RTP packets to encode as Osmux."},
+	[OSMUX_RTP_PACKETS_TX_DROPPED_CTR] = {"all_osmux:rtp_packets_tx_dropped", "Dropped Tx outbound RTP packets to encode as Osmux."},
+	[OSMUX_AMR_OCTETS_TX_CTR] = {"all_osmux:amr_octets_tx", "Tx outbound AMD payload octets."},
 	/* These last counters below do not exist in per-connection stats, only here: */
 	[OSMUX_NUM_CONNECTIONS] = {"all_osmux:num_closed_conns", "Total number of osmux connections closed."},
 	[OSMUX_PACKETS_RX_CTR] = {"all_osmux:packets_rx", "Total inbound UDP/Osmux packets."},
diff --git a/src/libosmo-mgcp/mgcp_osmux.c b/src/libosmo-mgcp/mgcp_osmux.c
index 790c425..6ae0d8e 100644
--- a/src/libosmo-mgcp/mgcp_osmux.c
+++ b/src/libosmo-mgcp/mgcp_osmux.c
@@ -219,14 +219,14 @@
 	struct msgb *msg;
 
 	if (!conn->end.output_enabled) {
-		rtpconn_osmux_rate_ctr_inc(conn, OSMUX_DROPPED_AMR_PAYLOADS_CTR);
+		rtpconn_osmux_rate_ctr_inc(conn, OSMUX_RTP_PACKETS_TX_DROPPED_CTR);
 		return -1;
 	}
 
 	if (conn->osmux.state != OSMUX_STATE_ENABLED) {
 		LOGPCONN(conn->conn, DOSMUX, LOGL_INFO, "forwarding RTP to Osmux conn not yet enabled, dropping (cid=%d)\n",
 		conn->osmux.remote_cid);
-		rtpconn_osmux_rate_ctr_inc(conn, OSMUX_DROPPED_AMR_PAYLOADS_CTR);
+		rtpconn_osmux_rate_ctr_inc(conn, OSMUX_RTP_PACKETS_TX_DROPPED_CTR);
 		return -1;
 	}
 
@@ -241,6 +241,12 @@
 		/* batch full, build and deliver it */
 		osmux_xfrm_input_deliver(conn->osmux.in);
 	}
+	if (ret < 0) {
+		rtpconn_osmux_rate_ctr_inc(conn, OSMUX_RTP_PACKETS_TX_DROPPED_CTR);
+	} else {
+		rtpconn_osmux_rate_ctr_inc(conn, OSMUX_RTP_PACKETS_TX_CTR);
+		rtpconn_osmux_rate_ctr_add(conn, OSMUX_AMR_OCTETS_TX_CTR, buf_len - sizeof(struct rtp_hdr));
+	}
 	return 0;
 }