net/mlx4_core: Set CQE/EQE size to 64B by default
authorEyal Perry <eyalpe@mellanox.com>
Thu, 19 Dec 2013 19:20:15 +0000 (21:20 +0200)
committerDavid S. Miller <davem@davemloft.net>
Fri, 20 Dec 2013 00:04:44 +0000 (19:04 -0500)
To achieve out of the box performance default is to use 64 byte CQE/EQE.
In tests that we conduct in our labs, we achieved a performance
improvement of twice the message rate. For older VF/libmlx4 support,
enable_64b_cqe_eqe must be set to 0 (disabled).

Signed-off-by: Eyal Perry <eyalpe@mellanox.com>
Signed-off-by: Amir Vadai <amirv@mellanox.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
drivers/net/ethernet/mellanox/mlx4/main.c

index 6b13a15..fbebfb0 100644 (file)
@@ -96,10 +96,10 @@ MODULE_PARM_DESC(log_num_mgm_entry_size, "log mgm size, that defines the num"
                                         " To activate device managed"
                                         " flow steering when available, set to -1");
 
-static bool enable_64b_cqe_eqe;
+static bool enable_64b_cqe_eqe = true;
 module_param(enable_64b_cqe_eqe, bool, 0444);
 MODULE_PARM_DESC(enable_64b_cqe_eqe,
-                "Enable 64 byte CQEs/EQEs when the FW supports this");
+                "Enable 64 byte CQEs/EQEs when the FW supports this (default: True)");
 
 #define HCA_GLOBAL_CAP_MASK            0