net/mlx5e: Increase Striding RQ minimum size limit to 4 multi-packet WQEs

This is to prevent the case of working with a single MPWQE
(1 WQE is always reserved as RQ is linked-list).
When the WQE is fully consumed, HW should still have available buffer
in order not to drop packets.

Fixes: 461017c ("net/mlx5e: Support RX multi-packet WQE (Striding RQ)")
Signed-off-by: Eugenia Emantayev <[email protected]>
Reviewed-by: Tariq Toukan <[email protected]>
Cc: [email protected]
Signed-off-by: Saeed Mahameed <[email protected]>

Author: Eugenia Emantayev

drivers/net/ethernet/mellanox/mlx5/core/en.h

@@ -67,7 +67,7 @@
 #define MLX5E_PARAMS_DEFAULT_LOG_RQ_SIZE                0xa
 #define MLX5E_PARAMS_MAXIMUM_LOG_RQ_SIZE                0xd
 
-#define MLX5E_PARAMS_MINIMUM_LOG_RQ_SIZE_MPW            0x1
+#define MLX5E_PARAMS_MINIMUM_LOG_RQ_SIZE_MPW            0x2
 #define MLX5E_PARAMS_DEFAULT_LOG_RQ_SIZE_MPW            0x3
 #define MLX5E_PARAMS_MAXIMUM_LOG_RQ_SIZE_MPW            0x6