The total length field in descriptor of inlined multi-packet send must be
updated before closing a seesion. There's possibility of updating it
afterward. This bug might cause one packet out of MLX5_MPW_DSEG_MAX gets
silently dropped by HW and impact performance, escpecially lossless test.
Fixes: 230189d9ff22 ("net/mlx5: support multi-packet send")
CC: sta...@dpdk.org
Signed-off-by: Yongseok Koh <ys...@mellanox.com>
---
drivers/net/mlx5/mlx5_rxtx.c | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)
diff --git a/drivers/net/mlx5/mlx5_rxtx.c b/drivers/net/mlx5/mlx5_rxtx.c
index 94fe74763..1043ebbc0 100644
--- a/drivers/net/mlx5/mlx5_rxtx.c
+++ b/drivers/net/mlx5/mlx5_rxtx.c
@@ -1046,6 +1046,7 @@ mlx5_tx_burst_mpw_inline(void *dpdk_txq, struct rte_mbuf
**pkts,
mpw.data.raw += length;
}
++mpw.pkts_n;
+ mpw.total_len += length;
++j;
if (mpw.pkts_n == MLX5_MPW_DSEG_MAX) {
mlx5_mpw_inline_close(txq, &mpw);
@@ -1055,7 +1056,6 @@ mlx5_tx_burst_mpw_inline(void *dpdk_txq, struct rte_mbuf
**pkts,
inline_room -= length;
}
}
- mpw.total_len += length;
elts_head = elts_head_next;
#ifdef MLX5_PMD_SOFT_COUNTERS
/* Increment sent bytes counter. */
--
2.11.0
