IB/mlx4: Increase max outstanding RDMA reads as target

Change the maximum number of outstanding RDMA reads allowed as a
target from 4 to 16 to per QP.  This allows RDMA read operations to
pipeline better.

Pointed out by Dotan Barak and Sagi Rotem.

Signed-off-by: Jack Morgenstein <jackm@dev.mellanox.co.il>
Signed-off-by: Roland Dreier <rolandd@cisco.com>

diff --git a/drivers/net/mlx4/main.c b/drivers/net/mlx4/main.c
index e8f45e6..4dc9dc1 100644 (file)
--- a/drivers/net/mlx4/main.c
+++ b/drivers/net/mlx4/main.c
@@ -78,7 +78,7 @@ static const char mlx4_version[] __devinitdata =
 static struct mlx4_profile default_profile = {
        .num_qp         = 1 << 16,
        .num_srq        = 1 << 16,
-       .rdmarc_per_qp  = 4,
+       .rdmarc_per_qp  = 1 << 4,
        .num_cq         = 1 << 16,
        .num_mcg        = 1 << 13,
        .num_mpt        = 1 << 17,