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| author |   Leon Romanovsky <leonro@nvidia.com> | 2020-09-26 13:24:45 +0300 |
|---|---|---|
| committer |   Jason Gunthorpe <jgg@nvidia.com> | 2020-09-29 13:09:49 -0300 |
| commit | 915ec7ed911493cea996f132d2629f44b7a1770d (patch) | |
| tree | b4e856b46bd7b09fe57503cc099d1b8f642264c3 /drivers/infiniband/hw/mlx4/mlx4_ib.h | |
| parent | RDMA/mlx5: Delete not needed GSI QP signal QP type (diff) | |
| download | linux-dev-915ec7ed911493cea996f132d2629f44b7a1770d.tar.xz linux-dev-915ec7ed911493cea996f132d2629f44b7a1770d.zip | |
RDMA/mlx4: Embed GSI QP into general mlx4_ib QP
Refactor the storage struct of mlx4 GSI QP to be embedded in mlx4_ib
QP. This allows to remove internal memory allocation of QP struct which is
hidden inside the mlx4_ib_create_qp() flow.
Link: https://lore.kernel.org/r/20200926102450.2966017-6-leon@kernel.org
Reviewed-by: Maor Gottlieb <maorg@mellanox.com>
Signed-off-by: Leon Romanovsky <leonro@nvidia.com>
Signed-off-by: Jason Gunthorpe <jgg@nvidia.com>
Diffstat (limited to 'drivers/infiniband/hw/mlx4/mlx4_ib.h')
| -rw-r--r-- | drivers/infiniband/hw/mlx4/mlx4_ib.h | 25 |
1 files changed, 24 insertions, 1 deletions
diff --git a/drivers/infiniband/hw/mlx4/mlx4_ib.h b/drivers/infiniband/hw/mlx4/mlx4_ib.h index 70636f70dd8c..2f9b1a6d01eb 100644 --- a/drivers/infiniband/hw/mlx4/mlx4_ib.h +++ b/drivers/infiniband/hw/mlx4/mlx4_ib.h @@ -299,6 +299,26 @@ struct mlx4_ib_rss { u8 rss_key[MLX4_EN_RSS_KEY_SIZE]; }; +enum { + /* + * Largest possible UD header: send with GRH and immediate + * data plus 18 bytes for an Ethernet header with VLAN/802.1Q + * tag. (LRH would only use 8 bytes, so Ethernet is the + * biggest case) + */ + MLX4_IB_UD_HEADER_SIZE = 82, + MLX4_IB_LSO_HEADER_SPARE = 128, +}; + +struct mlx4_ib_sqp { + int pkey_index; + u32 qkey; + u32 send_psn; + struct ib_ud_header ud_header; + u8 header_buf[MLX4_IB_UD_HEADER_SIZE]; + struct ib_qp *roce_v2_gsi; +}; + struct mlx4_ib_qp { union { struct ib_qp ibqp; @@ -344,7 +364,10 @@ struct mlx4_ib_qp { struct mlx4_wqn_range *wqn_range; /* Number of RSS QP parents that uses this WQ */ u32 rss_usecnt; - struct mlx4_ib_rss *rss_ctx; + union { + struct mlx4_ib_rss *rss_ctx; + struct mlx4_ib_sqp *sqp; + }; }; struct mlx4_ib_srq { |