MLX5_MKEY_BSF_OCTO_SIZE
MLX5_SET(mkc, mkc, bsf_octword_size, MLX5_MKEY_BSF_OCTO_SIZE);
seg->bsfs_octo_size = cpu_to_be32(MLX5_MKEY_BSF_OCTO_SIZE);
umr->bsf_octowords = cpu_to_be16(MLX5_MKEY_BSF_OCTO_SIZE);