IB/mlx5: Add support for QP with a given source QPN
Allow user space applications to accelerate send and receive
traffic which is typically handled by IPoIB ULP by creating
a UD QP with a given source QPN of the IPoIB UD QP.
UD QP with a given source QPN should basically be similar to
RAW QP from point of view of its created resources.
However,
- Its TIS should point to the source QPN.
- Modify can be done only on its state as the transport attributes
are managed by its source QP.
This patch manages below:
- Creating/destroying/modifying UD QP with a given source QPN.
Signed-off-by: Yishai Hadas <yishaih@mellanox.com>
Reviewed-by: Maor Gottlieb <maorg@mellanox.com>
Signed-off-by: Leon Romanovsky <leon@kernel.org>
Signed-off-by: Doug Ledford <dledford@redhat.com>
diff --git a/drivers/infiniband/hw/mlx5/mlx5_ib.h b/drivers/infiniband/hw/mlx5/mlx5_ib.h
index 0316147..7ac9910 100644
--- a/drivers/infiniband/hw/mlx5/mlx5_ib.h
+++ b/drivers/infiniband/hw/mlx5/mlx5_ib.h
@@ -383,6 +383,7 @@ struct mlx5_ib_qp {
struct list_head cq_recv_list;
struct list_head cq_send_list;
u32 rate_limit;
+ u32 underlay_qpn;
};
struct mlx5_ib_cq_buf {
@@ -404,6 +405,7 @@ enum mlx5_ib_qp_flags {
MLX5_IB_QP_CAP_SCATTER_FCS = 1 << 7,
MLX5_IB_QP_RSS = 1 << 8,
MLX5_IB_QP_CVLAN_STRIPPING = 1 << 9,
+ MLX5_IB_QP_UNDERLAY = 1 << 10,
};
struct mlx5_umr_wr {