>From eda80652876695342a68fd2e47d45d1c57d8b511 Mon Sep 17 00:00:00 2001
From: Yevgeny Petrilin <[EMAIL PROTECTED]>
Date: Wed, 23 Apr 2008 16:20:42 +0300
Subject: [PATCH] mlx4: Qp to ready
Added API to bring a QP from Reset to RTS state.
Signed-off-by: Yevgeny Petrilin <[EMAIL PROTECTED]>
---
drivers/net/mlx4/qp.c | 30 ++++++++++++++++++++++++++++++
include/linux/mlx4/qp.h | 4 ++++
2 files changed, 34 insertions(+), 0 deletions(-)
diff --git a/drivers/net/mlx4/qp.c b/drivers/net/mlx4/qp.c
index 2d5be15..a6ed9ca 100644
--- a/drivers/net/mlx4/qp.c
+++ b/drivers/net/mlx4/qp.c
@@ -366,3 +366,33 @@ 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)
+{
+#define CLEAR_STATE_MASK 0xfffffff
+ int err = 0;
+ 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(CLEAR_STATE_MASK);
+ 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 d7c0227..96b0e1b 100644
--- a/include/linux/mlx4/qp.h
+++ b/include/linux/mlx4/qp.h
@@ -305,6 +305,10 @@ 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));
--
1.5.4
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