[dpdk-dev] [PATCH v4 08/13] port: added port_ring_writer stats

[Michal Jastrzebski]

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

Added statistics for port writer port.

Signed-off-by: Maciej Gajdzica <maciejx.t.gajdzica at intel.com>
---
 lib/librte_port/rte_port_ring.c |   38 ++++++++++++++++++++++++++++++++++++++
 1 file changed, 38 insertions(+)

diff --git a/lib/librte_port/rte_port_ring.c b/lib/librte_port/rte_port_ring.c
index 091b052..ff58009 100644
--- a/lib/librte_port/rte_port_ring.c
+++ b/lib/librte_port/rte_port_ring.c
@@ -133,7 +133,23 @@ rte_port_ring_reader_stats_read(void *port,
 /*
  * Port RING Writer
  */
+#ifdef RTE_PORT_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;
@@ -181,6 +197,7 @@ 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]);

@@ -193,6 +210,7 @@ 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);

@@ -219,8 +237,10 @@ 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];

@@ -233,6 +253,7 @@ 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;
                }

@@ -269,6 +290,22 @@ 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
  */
@@ -455,6 +492,7 @@ 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 = {
-- 
1.7.9.5