Merge branch 'for-jens' of git://git.drbd.org/linux-drbd into for-3.6/drivers

[~andy/linux] / drivers / infiniband / hw / mlx4 / mlx4_ib.h

diff --git a/drivers/infiniband/hw/mlx4/mlx4_ib.h b/drivers/infiniband/hw/mlx4/mlx4_ib.h
index e62297cc77cc24396d3460498720508dd3e0fde0..ff36655d23d387953fd9a1fc1b7fb8ffa1bf1153 100644 (file)
--- a/drivers/infiniband/hw/mlx4/mlx4_ib.h
+++ b/drivers/infiniband/hw/mlx4/mlx4_ib.h
@@ -44,6 +44,14 @@
 #include <linux/mlx4/device.h>
 #include <linux/mlx4/doorbell.h>
 
+enum {
+       MLX4_IB_SQ_MIN_WQE_SHIFT = 6,
+       MLX4_IB_MAX_HEADROOM     = 2048
+};
+
+#define MLX4_IB_SQ_HEADROOM(shift)     ((MLX4_IB_MAX_HEADROOM >> (shift)) + 1)
+#define MLX4_IB_SQ_MAX_SPARE           (MLX4_IB_SQ_HEADROOM(MLX4_IB_SQ_MIN_WQE_SHIFT))
+
 struct mlx4_ib_ucontext {
        struct ib_ucontext      ibucontext;
        struct mlx4_uar         uar;