[dpdk-dev] [PATCH v4 11/13] port: added port_sched_writer stats

[Michal Jastrzebski <michalx.k.jastrzebski@intel.com>]

From: Maciej Gajdzica <maciejx.t.gajdzica@intel.com>

Added statistics for sched writer port.

Signed-off-by: Maciej Gajdzica <maciejx.t.gajdzica@intel.com>
---
 lib/librte_port/rte_port_sched.c |   57 ++++++++++++++++++++++++++++++++++----
 1 file changed, 52 insertions(+), 5 deletions(-)

diff --git a/lib/librte_port/rte_port_sched.c b/lib/librte_port/rte_port_sched.c
index a82e4fa..c5ff8ab 100644
--- a/lib/librte_port/rte_port_sched.c
+++ b/lib/librte_port/rte_port_sched.c
@@ -132,7 +132,23 @@ rte_port_sched_reader_stats_read(void *port,
 /*
  * Writer
  */
+#ifdef RTE_PORT_STATS_COLLECT
+
+#define RTE_PORT_SCHED_WRITER_STATS_PKTS_IN_ADD(port, val) \
+	port->stats.n_pkts_in += val
+#define RTE_PORT_SCHED_WRITER_STATS_PKTS_DROP_ADD(port, val) \
+	port->stats.n_pkts_drop += val
+
+#else
+
+#define RTE_PORT_SCHED_WRITER_STATS_PKTS_IN_ADD(port, val)
+#define RTE_PORT_SCHED_WRITER_STATS_PKTS_DROP_ADD(port, val)
+
+#endif
+
 struct rte_port_sched_writer {
+	struct rte_port_out_stats stats;
+
 	struct rte_mbuf *tx_buf[2 * RTE_PORT_IN_BURST_SIZE_MAX];
 	struct rte_sched_port *sched;
 	uint32_t tx_burst_sz;
@@ -180,8 +196,12 @@ rte_port_sched_writer_tx(void *port, struct rte_mbuf *pkt)
 	struct rte_port_sched_writer *p = (struct rte_port_sched_writer *) port;
 
 	p->tx_buf[p->tx_buf_count++] = pkt;
+	RTE_PORT_SCHED_WRITER_STATS_PKTS_IN_ADD(p, 1);
 	if (p->tx_buf_count >= p->tx_burst_sz) {
-		rte_sched_port_enqueue(p->sched, p->tx_buf, p->tx_buf_count);
+		__rte_unused uint32_t nb_tx;
+
+		nb_tx = rte_sched_port_enqueue(p->sched, p->tx_buf, p->tx_buf_count);
+		RTE_PORT_SCHED_WRITER_STATS_PKTS_DROP_ADD(p, p->tx_buf_count - nb_tx);
 		p->tx_buf_count = 0;
 	}
 
@@ -200,15 +220,18 @@ rte_port_sched_writer_tx_bulk(void *port,
 			((pkts_mask & bsz_mask) ^ bsz_mask);
 
 	if (expr == 0) {
+		__rte_unused uint32_t nb_tx;
 		uint64_t n_pkts = __builtin_popcountll(pkts_mask);
 
 		if (tx_buf_count) {
-			rte_sched_port_enqueue(p->sched, p->tx_buf,
+			nb_tx = rte_sched_port_enqueue(p->sched, p->tx_buf,
 				tx_buf_count);
+			RTE_PORT_SCHED_WRITER_STATS_PKTS_DROP_ADD(p, tx_buf_count - nb_tx);
 			p->tx_buf_count = 0;
 		}
 
-		rte_sched_port_enqueue(p->sched, pkts, n_pkts);
+		nb_tx = rte_sched_port_enqueue(p->sched, pkts, n_pkts);
+		RTE_PORT_SCHED_WRITER_STATS_PKTS_DROP_ADD(p, n_pkts - nb_tx);
 	} else {
 		for ( ; pkts_mask; ) {
 			uint32_t pkt_index = __builtin_ctzll(pkts_mask);
@@ -216,13 +239,17 @@ rte_port_sched_writer_tx_bulk(void *port,
 			struct rte_mbuf *pkt = pkts[pkt_index];
 
 			p->tx_buf[tx_buf_count++] = pkt;
+			RTE_PORT_SCHED_WRITER_STATS_PKTS_IN_ADD(p, 1);
 			pkts_mask &= ~pkt_mask;
 		}
 		p->tx_buf_count = tx_buf_count;
 
 		if (tx_buf_count >= p->tx_burst_sz) {
-			rte_sched_port_enqueue(p->sched, p->tx_buf,
+			__rte_unused uint32_t nb_tx;
+
+			nb_tx = rte_sched_port_enqueue(p->sched, p->tx_buf,
 				tx_buf_count);
+			RTE_PORT_SCHED_WRITER_STATS_PKTS_DROP_ADD(p, tx_buf_count - nb_tx);
 			p->tx_buf_count = 0;
 		}
 	}
@@ -236,7 +263,10 @@ rte_port_sched_writer_flush(void *port)
 	struct rte_port_sched_writer *p = (struct rte_port_sched_writer *) port;
 
 	if (p->tx_buf_count) {
-		rte_sched_port_enqueue(p->sched, p->tx_buf, p->tx_buf_count);
+		__rte_unused uint32_t nb_tx;
+
+		nb_tx = rte_sched_port_enqueue(p->sched, p->tx_buf, p->tx_buf_count);
+		RTE_PORT_SCHED_WRITER_STATS_PKTS_DROP_ADD(p, p->tx_buf_count - nb_tx);
 		p->tx_buf_count = 0;
 	}
 
@@ -257,6 +287,22 @@ rte_port_sched_writer_free(void *port)
 	return 0;
 }
 
+static int
+rte_port_sched_writer_stats_read(void *port,
+		struct rte_port_out_stats *stats, int clear)
+{
+	struct rte_port_sched_writer *p =
+		(struct rte_port_sched_writer *) port;
+
+	if (stats != NULL)
+		memcpy(stats, &p->stats, sizeof(p->stats));
+
+	if (clear)
+		memset(&p->stats, 0, sizeof(p->stats));
+
+	return 0;
+}
+
 /*
  * Summary of port operations
  */
@@ -273,4 +319,5 @@ struct rte_port_out_ops rte_port_sched_writer_ops = {
 	.f_tx = rte_port_sched_writer_tx,
 	.f_tx_bulk = rte_port_sched_writer_tx_bulk,
 	.f_flush = rte_port_sched_writer_flush,
+	.f_stats = rte_port_sched_writer_stats_read,
 };
-- 
1.7.9.5