[dpdk-dev,08/13] port: added port_ring_writer stats

diff --git a/config/common_bsdapp b/config/common_bsdapp
index b51095c..94930ed 100644
--- a/config/common_bsdapp
+++ b/config/common_bsdapp
@@ -388,6 +388,7 @@  CONFIG_RTE_PORT_ETHDEV_WRITER_NODROP_STATS_COLLECT=n
 CONFIG_RTE_PORT_RING_READER_FRAG_STATS_COLLECT=n
 CONFIG_RTE_PORT_RING_WRITER_RAS_STATS_COLLECT=n
 CONFIG_RTE_PORT_RING_READER_STATS_COLLECT=n
+CONFIG_RTE_PORT_RING_WRITER_STATS_COLLECT=n
 
 #
 # Compile librte_table
diff --git a/config/common_linuxapp b/config/common_linuxapp
index d84d2cf..3127de5 100644
--- a/config/common_linuxapp
+++ b/config/common_linuxapp
@@ -395,6 +395,7 @@  CONFIG_RTE_PORT_ETHDEV_WRITER_NODROP_STATS_COLLECT=n
 CONFIG_RTE_PORT_RING_READER_FRAG_STATS_COLLECT=n
 CONFIG_RTE_PORT_RING_WRITER_RAS_STATS_COLLECT=n
 CONFIG_RTE_PORT_RING_READER_STATS_COLLECT=n
+CONFIG_RTE_PORT_RING_WRITER_STATS_COLLECT=n
 
 #
 # Compile librte_table
diff --git a/lib/librte_port/rte_port_ring.c b/lib/librte_port/rte_port_ring.c
index 6c5b514..6d03093 100644
--- a/lib/librte_port/rte_port_ring.c
+++ b/lib/librte_port/rte_port_ring.c
@@ -135,7 +135,23 @@  rte_port_ring_reader_stats_read(void *port,
  */
 #define RTE_PORT_RING_WRITER_APPROACH                  1
 
+#ifdef RTE_PORT_RING_WRITER_STATS_COLLECT
+
+#define RTE_PORT_RING_WRITER_STATS_PKTS_IN_ADD(port, val) \
+	port->stats.n_pkts_in += val
+#define RTE_PORT_RING_WRITER_STATS_PKTS_DROP_ADD(port, val) \
+	port->stats.n_pkts_drop += val
+
+#else
+
+#define RTE_PORT_RING_WRITER_STATS_PKTS_IN_ADD(port, val)
+#define RTE_PORT_RING_WRITER_STATS_PKTS_DROP_ADD(port, val)
+
+#endif
+
 struct rte_port_ring_writer {
+	struct rte_port_out_stats stats;
+
 	struct rte_mbuf *tx_buf[RTE_PORT_IN_BURST_SIZE_MAX];
 	struct rte_ring *ring;
 	uint32_t tx_burst_sz;
@@ -183,6 +199,7 @@  send_burst(struct rte_port_ring_writer *p)
 	nb_tx = rte_ring_sp_enqueue_burst(p->ring, (void **)p->tx_buf,
 			p->tx_buf_count);
 
+	RTE_PORT_RING_WRITER_STATS_PKTS_DROP_ADD(p, p->tx_buf_count - nb_tx);
 	for ( ; nb_tx < p->tx_buf_count; nb_tx++)
 		rte_pktmbuf_free(p->tx_buf[nb_tx]);
 
@@ -195,6 +212,7 @@  rte_port_ring_writer_tx(void *port, struct rte_mbuf *pkt)
 	struct rte_port_ring_writer *p = (struct rte_port_ring_writer *) port;
 
 	p->tx_buf[p->tx_buf_count++] = pkt;
+	RTE_PORT_RING_WRITER_STATS_PKTS_IN_ADD(p, 1);
 	if (p->tx_buf_count >= p->tx_burst_sz)
 		send_burst(p);
 
@@ -214,6 +232,7 @@  rte_port_ring_writer_tx_bulk(void *port,
 		uint64_t n_pkts = __builtin_popcountll(pkts_mask);
 		uint32_t i;
 
+		RTE_PORT_RING_WRITER_STATS_PKTS_IN_ADD(p, n_pkts);
 		for (i = 0; i < n_pkts; i++) {
 			struct rte_mbuf *pkt = pkts[i];
 
@@ -228,6 +247,7 @@  rte_port_ring_writer_tx_bulk(void *port,
 			struct rte_mbuf *pkt = pkts[pkt_index];
 
 			p->tx_buf[p->tx_buf_count++] = pkt;
+			RTE_PORT_RING_WRITER_STATS_PKTS_IN_ADD(p, 1);
 			if (p->tx_buf_count >= p->tx_burst_sz)
 				send_burst(p);
 			pkts_mask &= ~pkt_mask;
@@ -259,8 +279,10 @@  rte_port_ring_writer_tx_bulk(void *port,
 		if (tx_buf_count)
 			send_burst(p);
 
+		RTE_PORT_RING_WRITER_STATS_PKTS_IN_ADD(p, n_pkts);
 		n_pkts_ok = rte_ring_sp_enqueue_burst(p->ring, (void **)pkts, n_pkts);
 
+		RTE_PORT_RING_WRITER_STATS_PKTS_DROP_ADD(p, n_pkts - n_pkts_ok);
 		for ( ; n_pkts_ok < n_pkts; n_pkts_ok++) {
 			struct rte_mbuf *pkt = pkts[n_pkts_ok];
 
@@ -273,6 +295,7 @@  rte_port_ring_writer_tx_bulk(void *port,
 			struct rte_mbuf *pkt = pkts[pkt_index];
 
 			p->tx_buf[tx_buf_count++] = pkt;
+			RTE_PORT_RING_WRITER_STATS_PKTS_IN_ADD(p, 1);
 			pkts_mask &= ~pkt_mask;
 		}
 
@@ -315,6 +338,22 @@  rte_port_ring_writer_free(void *port)
 	return 0;
 }
 
+static int
+rte_port_ring_writer_stats_read(void *port,
+		struct rte_port_out_stats *stats, int clear)
+{
+	struct rte_port_ring_writer *p =
+		(struct rte_port_ring_writer *) port;
+
+	if (stats != NULL)
+		memcpy(stats, &p->stats, sizeof(p->stats));
+
+	if (clear)
+		memset(&p->stats, 0, sizeof(p->stats));
+
+	return 0;
+}
+
 /*
  * Port RING Writer Nodrop
  */
@@ -548,6 +587,7 @@  struct rte_port_out_ops rte_port_ring_writer_ops = {
 	.f_tx = rte_port_ring_writer_tx,
 	.f_tx_bulk = rte_port_ring_writer_tx_bulk,
 	.f_flush = rte_port_ring_writer_flush,
+	.f_stats = rte_port_ring_writer_stats_read,
 };
 
 struct rte_port_out_ops rte_port_ring_writer_nodrop_ops = {