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IB/mlx5: Add tunneling offloads support

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The device can support receive Stateless Offloads for the inner
packet's fields only when the packet is processed by TIR which is
enabled to support tunneling. Otherwise, the device treats the
packet as an ordinary non-tunneling packet and receive offloads
can be done only for the outer packet's field.
In order to enable receive Stateless Offloading support for incoming
tunneling traffic the TIR should be created with tunneled_offload_en.
Tunneling offloads is supported only be raw ethernet QP.

This patch includes:
* New QP creation flag for tunneling offloads.
* Reports device capabilities.

Signed-off-by: Maor Gottlieb <maorg@mellanox.com>
Reviewed-by: Mark Bloch <markb@mellanox.com>
Signed-off-by: Leon Romanovsky <leon@kernel.org>
Signed-off-by: Doug Ledford <dledford@redhat.com>
This commit is contained in:
Maor Gottlieb
2017-10-19 08:25:55 +03:00
committed by Doug Ledford
parent 4d350f1f89
commit f95ef6cbae
4 changed files with 61 additions and 6 deletions
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3
drivers/infiniband/hw/mlx5/mlx5_ib.h
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@@ -398,6 +398,7 @@ struct mlx5_ib_qp {
struct list_head cq_send_list;
u32 rate_limit;
u32 underlay_qpn;
bool tunnel_offload_en;
};
struct mlx5_ib_cq_buf {
@@ -420,6 +421,8 @@ enum mlx5_ib_qp_flags {
MLX5_IB_QP_RSS = 1 << 8,
MLX5_IB_QP_CVLAN_STRIPPING = 1 << 9,
MLX5_IB_QP_UNDERLAY = 1 << 10,
/* Reserved for PCI_WRITE_PAD = 1 << 11, */
MLX5_IB_QP_TUNNEL_OFFLOAD = 1 << 12,
};
struct mlx5_umr_wr {