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-rw-r--r--drivers/net/mlx4/qp.c31
-rw-r--r--include/linux/mlx4/qp.h4
2 files changed, 35 insertions, 0 deletions
diff --git a/drivers/net/mlx4/qp.c b/drivers/net/mlx4/qp.c
index fa24e6597591..ee5484c44a18 100644
--- a/drivers/net/mlx4/qp.c
+++ b/drivers/net/mlx4/qp.c
@@ -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);
diff --git a/include/linux/mlx4/qp.h b/include/linux/mlx4/qp.h
index a5e43febee4f..7f128b266faa 100644
--- a/include/linux/mlx4/qp.h
+++ b/include/linux/mlx4/qp.h
@@ -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));