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authorYevgeny Petrilin <yevgenyp@mellanox.co.il>2008-04-25 14:52:32 -0700
committerRoland Dreier <rolandd@cisco.com>2008-04-25 14:52:32 -0700
commited4d3c1061d6f367a4ef5e1656c25af3314fe2b7 (patch)
tree93e627fa3d8f7b439625ffec5ccd390d100d67a1 /drivers/net/mlx4
parent38ae6a535470b959df67ded6798fc542bb212e19 (diff)
downloadop-kernel-dev-ed4d3c1061d6f367a4ef5e1656c25af3314fe2b7.zip
op-kernel-dev-ed4d3c1061d6f367a4ef5e1656c25af3314fe2b7.tar.gz
mlx4_core: Add helper to move QP to ready-to-send
Avoid duplicating code in ethernet and FC modules. Signed-off-by: Yevgeny Petrilin <yevgenyp@mellanox.co.il> Signed-off-by: Roland Dreier <rolandd@cisco.com>
Diffstat (limited to 'drivers/net/mlx4')
-rw-r--r--drivers/net/mlx4/qp.c31
1 files changed, 31 insertions, 0 deletions
diff --git a/drivers/net/mlx4/qp.c b/drivers/net/mlx4/qp.c
index fa24e65..ee5484c 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);
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