IB/mlx5: Add support to dropless RQ

[platform/kernel/linux-rpi.git] / drivers / infiniband / hw / mlx5 / mlx5_ib.h

diff --git a/drivers/infiniband/hw/mlx5/mlx5_ib.h b/drivers/infiniband/hw/mlx5/mlx5_ib.h
index f0682f3..097f12d 100644 (file)
--- a/drivers/infiniband/hw/mlx5/mlx5_ib.h
+++ b/drivers/infiniband/hw/mlx5/mlx5_ib.h
@@ -247,6 +247,10 @@ struct mlx5_ib_wq {
        void                   *qend;
 };
 
+enum mlx5_ib_wq_flags {
+       MLX5_IB_WQ_FLAGS_DELAY_DROP = 0x1,
+};
+
 struct mlx5_ib_rwq {
        struct ib_wq            ibwq;
        struct mlx5_core_qp     core_qp;
@@ -264,6 +268,7 @@ struct mlx5_ib_rwq {
        u32                     wqe_count;
        u32                     wqe_shift;
        int                     wq_sig;
+       u32                     create_flags; /* Use enum mlx5_ib_wq_flags */
 };
 
 enum {
@@ -652,6 +657,19 @@ struct mlx5_ib_dbg_cc_params {
        struct mlx5_ib_dbg_param        params[MLX5_IB_DBG_CC_MAX];
 };
 
+enum {
+       MLX5_MAX_DELAY_DROP_TIMEOUT_MS = 100,
+};
+
+struct mlx5_ib_delay_drop {
+       struct mlx5_ib_dev     *dev;
+       struct work_struct      delay_drop_work;
+       /* serialize setting of delay drop */
+       struct mutex            lock;
+       u32                     timeout;
+       bool                    activate;
+};
+
 struct mlx5_ib_dev {
        struct ib_device                ib_dev;
        struct mlx5_core_dev            *mdev;
@@ -688,6 +706,7 @@ struct mlx5_ib_dev {
        struct mlx5_ib_port     *port;
        struct mlx5_sq_bfreg    bfreg;
        struct mlx5_sq_bfreg    fp_bfreg;
+       struct mlx5_ib_delay_drop       delay_drop;
        struct mlx5_ib_dbg_cc_params    *dbg_cc_params;
 
        /* protect the user_td */