[dpdk-dev] [PATCH] net/mlx5: fix inline packet size for ConnectX-4LX

[Viacheslav Ovsiienko]

This patch does extra inline packet size check to tune
the ConnectX-4LX performance in the legacy Multi-Packet Write
mode.

Signed-off-by: Viacheslav Ovsiienko <viacheslavo at mellanox.com>
---
 drivers/net/mlx5/mlx5_rxtx.c | 2 ++
 1 file changed, 2 insertions(+)

diff --git a/drivers/net/mlx5/mlx5_rxtx.c b/drivers/net/mlx5/mlx5_rxtx.c
index b55db4f..0df811b 100644
--- a/drivers/net/mlx5/mlx5_rxtx.c
+++ b/drivers/net/mlx5/mlx5_rxtx.c
@@ -4281,6 +4281,8 @@ enum mlx5_txcmp_code {
 			    loc->mbuf->ol_flags & PKT_TX_DYNF_NOINLINE)
 				goto pointer_empw;
 			if (MLX5_TXOFF_CONFIG(MPW)) {
+				if (dlen > txq->inlen_send)
+					goto pointer_empw;
 				tlen = dlen;
 				if (part == room) {
 					/* Open new inline MPW session. */
-- 
1.8.3.1