mlx5dv_create_cq3

mlx5_cq_attr

struct mlx5dv_cq_init_attr {
    uint64_t comp_mask;
    uint8_t  cqe_comp_res_format;
    uint32_t flags;
    uint16_t cqe_size;
};

comp_mask

Bitmask specifying what fields in the structure are valid:

MLX5DV_CQ_INIT_ATTR_MASK_COMPRESSED_CQE enables creating a CQ in a mode that few CQEs may be compressed into a single CQE, valid values in cqe_comp_res_format MLX5DV_CQ_INIT_ATTR_MASK_FLAGS valid values in flags MLX5DV_CQ_INIT_ATTR_MASK_CQE_SIZE valid values in cqe_size

cqe_comp_res_format

A bitwise OR of the various CQE response formats of the responder side:

MLX5DV_CQE_RES_FORMAT_HASH CQE compression with hash MLX5DV_CQE_RES_FORMAT_CSUM CQE compression with RX checksum MLX5DV_CQE_RES_FORMAT_CSUM_STRIDX CQE compression with stride index

flags

A bitwise OR of the various values described below:

MLX5DV_CQ_INIT_ATTR_FLAGS_CQE_PAD create a padded 128B CQE

cqe_size

configure the CQE size to be 64 or 128 bytes other values will fail mlx5dv_create_cq.