[PATCH] net/vhost: report TX errors in port stats

[Andrey Ignatov]

vhost device doesn't report TX errors what complicates debugging of
dropped packets. Add oerrors to port stats.

- before (testpmd `show port stats`):
  TX-packets: 18328512   TX-errors: 0          TX-bytes:  1173024768

- after:
  TX-packets: 1737728    TX-errors: 131367616  TX-bytes:  111214592

Signed-off-by: Andrey Ignatov <r...@apple.com>
---
 drivers/net/vhost/rte_eth_vhost.c | 4 ++++
 1 file changed, 4 insertions(+)

diff --git a/drivers/net/vhost/rte_eth_vhost.c 
b/drivers/net/vhost/rte_eth_vhost.c
index 8d37ec9775..48a9a79efe 100644
--- a/drivers/net/vhost/rte_eth_vhost.c
+++ b/drivers/net/vhost/rte_eth_vhost.c
@@ -1299,6 +1299,7 @@ eth_stats_get(struct rte_eth_dev *dev, struct 
rte_eth_stats *stats)
        unsigned i;
        unsigned long rx_total = 0, tx_total = 0;
        unsigned long rx_total_bytes = 0, tx_total_bytes = 0;
+       unsigned long tx_total_errors = 0;
        struct vhost_queue *vq;
 
        for (i = 0; i < RTE_ETHDEV_QUEUE_STAT_CNTRS &&
@@ -1323,12 +1324,15 @@ eth_stats_get(struct rte_eth_dev *dev, struct 
rte_eth_stats *stats)
 
                stats->q_obytes[i] = vq->stats.bytes;
                tx_total_bytes += stats->q_obytes[i];
+
+               tx_total_errors += vq->stats.missed_pkts;
        }
 
        stats->ipackets = rx_total;
        stats->opackets = tx_total;
        stats->ibytes = rx_total_bytes;
        stats->obytes = tx_total_bytes;
+       stats->oerrors = tx_total_errors;
 
        return 0;
 }
-- 
2.37.3