diff options
| -rw-r--r-- | drivers/infiniband/hw/mlx5/cq.c | 30 | ||||
| -rw-r--r-- | include/uapi/rdma/mlx5-abi.h | 4 |
2 files changed, 32 insertions, 2 deletions
diff --git a/drivers/infiniband/hw/mlx5/cq.c b/drivers/infiniband/hw/mlx5/cq.c index 9e0598b5615f..d72a4367c891 100644 --- a/drivers/infiniband/hw/mlx5/cq.c +++ b/drivers/infiniband/hw/mlx5/cq.c @@ -731,7 +731,7 @@ static int create_cq_user(struct mlx5_ib_dev *dev, struct ib_udata *udata, int entries, u32 **cqb, int *cqe_size, int *index, int *inlen) { - struct mlx5_ib_create_cq ucmd; + struct mlx5_ib_create_cq ucmd = {}; size_t ucmdlen; int page_shift; __be64 *pas; @@ -792,8 +792,36 @@ static int create_cq_user(struct mlx5_ib_dev *dev, struct ib_udata *udata, *index = to_mucontext(context)->uuari.uars[0].index; + if (ucmd.cqe_comp_en == 1) { + if (unlikely((*cqe_size != 64) || + !MLX5_CAP_GEN(dev->mdev, cqe_compression))) { + err = -EOPNOTSUPP; + mlx5_ib_warn(dev, "CQE compression is not supported for size %d!\n", + *cqe_size); + goto err_cqb; + } + + if (unlikely(!ucmd.cqe_comp_res_format || + !(ucmd.cqe_comp_res_format < + MLX5_IB_CQE_RES_RESERVED) || + (ucmd.cqe_comp_res_format & + (ucmd.cqe_comp_res_format - 1)))) { + err = -EOPNOTSUPP; + mlx5_ib_warn(dev, "CQE compression res format %d is not supported!\n", + ucmd.cqe_comp_res_format); + goto err_cqb; + } + + MLX5_SET(cqc, cqc, cqe_comp_en, 1); + MLX5_SET(cqc, cqc, mini_cqe_res_format, + ilog2(ucmd.cqe_comp_res_format)); + } + return 0; +err_cqb: + kfree(cqb); + err_db: mlx5_ib_db_unmap_user(to_mucontext(context), &cq->db); diff --git a/include/uapi/rdma/mlx5-abi.h b/include/uapi/rdma/mlx5-abi.h index 6649d13a2dbb..b0a41c8dc1fb 100644 --- a/include/uapi/rdma/mlx5-abi.h +++ b/include/uapi/rdma/mlx5-abi.h @@ -149,7 +149,9 @@ struct mlx5_ib_create_cq { __u64 buf_addr; __u64 db_addr; __u32 cqe_size; - __u32 reserved; /* explicit padding (optional on i386) */ + __u8 cqe_comp_en; + __u8 cqe_comp_res_format; + __u16 reserved; /* explicit padding (optional on i386) */ }; struct mlx5_ib_create_cq_resp { |