net/tap: fix reported number of Tx packets

When writev fails to send packets it doesn't update the
number of Tx packets, but it still num_tx is updated.

The value that should be returned is the actual number
of sent packets which is num_packets.

Fixes: 02f96a0a82d1 ("net/tap: add TUN/TAP device PMD")
CC: stable@dpdk.org
Signed-off-by: Raslan Darawsheh <rasland@mellanox.com>
Acked-by: Keith Wiles <keith.wiles@intel.com>

diff --git a/drivers/net/tap/rte_eth_tap.c b/drivers/net/tap/rte_eth_tap.c
index 84aaf241019ac24c75b183d8609b6cd95a7fd46d..77f26940b64492b8e8c7e62673764882c6e0da67 100644 (file)
--- a/drivers/net/tap/rte_eth_tap.c
+++ b/drivers/net/tap/rte_eth_tap.c
@@ -685,7 +685,7 @@ pmd_tx_burst(void *queue, struct rte_mbuf **bufs, uint16_t nb_pkts)
        txq->stats.errs += nb_pkts - num_tx;
        txq->stats.obytes += num_tx_bytes;
 
-       return num_tx;
+       return num_packets;
 }
 
 static const char *