[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 <viachesl...@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