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Commit ed4d3c10 authored by Yevgeny Petrilin's avatar Yevgeny Petrilin Committed by Roland Dreier
Browse files

mlx4_core: Add helper to move QP to ready-to-send 



Avoid duplicating code in ethernet and FC modules.

Signed-off-by: default avatarYevgeny Petrilin <yevgenyp@mellanox.co.il>
Signed-off-by: default avatarRoland Dreier <rolandd@cisco.com>
parent 38ae6a53

drivers/net/mlx4/qp.c

+31 −0
Original line number Diff line number Diff line
@@ -299,3 +299,34 @@ int mlx4_qp_query(struct mlx4_dev *dev, struct mlx4_qp *qp, 
}

EXPORT_SYMBOL_GPL(mlx4_qp_query);



int mlx4_qp_to_ready(struct mlx4_dev *dev, struct mlx4_mtt *mtt,

		     struct mlx4_qp_context *context,

		     struct mlx4_qp *qp, enum mlx4_qp_state *qp_state)

{

	int err;

	int i;

	enum mlx4_qp_state states[] = {

		MLX4_QP_STATE_RST,

		MLX4_QP_STATE_INIT,

		MLX4_QP_STATE_RTR,

		MLX4_QP_STATE_RTS

	};



	for (i = 0; i < ARRAY_SIZE(states) - 1; i++) {

		context->flags &= cpu_to_be32(~(0xf << 28));

		context->flags |= cpu_to_be32(states[i + 1] << 28);

		err = mlx4_qp_modify(dev, mtt, states[i], states[i + 1],

				     context, 0, 0, qp);

		if (err) {

			mlx4_err(dev, "Failed to bring QP to state: "

				 "%d with error: %d\n",

				 states[i + 1], err);

			return err;

		}



		*qp_state = states[i + 1];

	}



	return 0;

}

EXPORT_SYMBOL_GPL(mlx4_qp_to_ready);

include/linux/mlx4/qp.h

+4 −0
Original line number Diff line number Diff line
@@ -296,6 +296,10 @@ int mlx4_qp_modify(struct mlx4_dev *dev, struct mlx4_mtt *mtt, 
int mlx4_qp_query(struct mlx4_dev *dev, struct mlx4_qp *qp,

		  struct mlx4_qp_context *context);



int mlx4_qp_to_ready(struct mlx4_dev *dev, struct mlx4_mtt *mtt,

		     struct mlx4_qp_context *context,

		     struct mlx4_qp *qp, enum mlx4_qp_state *qp_state);



static inline struct mlx4_qp *__mlx4_qp_lookup(struct mlx4_dev *dev, u32 qpn)

{

	return radix_tree_lookup(&dev->qp_table_tree, qpn & (dev->caps.num_qps - 1));