diff options
| author |   Moni Shoua <monis@mellanox.com> | 2016-01-14 17:50:37 +0200 |
|---|---|---|
| committer |   Doug Ledford <dledford@redhat.com> | 2016-01-19 15:35:00 -0500 |
| commit | 3f723f42d9d625bb9ecfe923d19d1d42da775797 (patch) | |
| tree | ebf0ef5781105d6188a5e897b8910bb0cc10aee9 /include | |
| parent | net/mlx4_core: Add support for configuring RoCE v2 UDP port (diff) | |
| download | linux-dev-3f723f42d9d625bb9ecfe923d19d1d42da775797.tar.xz linux-dev-3f723f42d9d625bb9ecfe923d19d1d42da775797.zip | |
net/mlx4_core: Add support for RoCE v2 entropy
In RoCE v2 we need to choose a source UDP port, we do so by using
entropy over the source and dest QPNs.
Signed-off-by: Moni Shoua <monis@mellanox.com>
Signed-off-by: Matan Barak <matanb@mellanox.com>
Signed-off-by: Doug Ledford <dledford@redhat.com>
Diffstat (limited to 'include')
| -rw-r--r-- | include/linux/mlx4/qp.h | 13 |
1 files changed, 12 insertions, 1 deletions
diff --git a/include/linux/mlx4/qp.h b/include/linux/mlx4/qp.h index fe052e234906..cdf110d3f260 100644 --- a/include/linux/mlx4/qp.h +++ b/include/linux/mlx4/qp.h @@ -204,7 +204,8 @@ struct mlx4_qp_context { u32 reserved1; __be32 next_send_psn; __be32 cqn_send; - u32 reserved2[2]; + __be16 roce_entropy; + __be16 reserved2[3]; __be32 last_acked_psn; __be32 ssn; __be32 params2; @@ -487,4 +488,14 @@ static inline struct mlx4_qp *__mlx4_qp_lookup(struct mlx4_dev *dev, u32 qpn) void mlx4_qp_remove(struct mlx4_dev *dev, struct mlx4_qp *qp); +static inline u16 folded_qp(u32 q) +{ + u16 res; + + res = ((q & 0xff) ^ ((q & 0xff0000) >> 16)) | (q & 0xff00); + return res; +} + +u16 mlx4_qp_roce_entropy(struct mlx4_dev *dev, u32 qpn); + #endif /* MLX4_QP_H */ |