CQE compression saves PCIe bandwidth by compressing a few CQEs into a smaller amount of bytes on the PCIe.
CQE Compression Environmental Variables
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MLX5_ENABLE_CQE_COMPRESSION
CQE Compression Experimental Verbs
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ibv_exp_create_cqIBV_EXP_CQ_COMPRESSED_CQE
CQE Compression Capabilities
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IBV_EXP_CQ_COMPRESSED_CQE
CQE Compression RDMA-Core Verbs
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mlx5dv_create_cqcqe_comp_res_formatMLX5DV_CQ_INIT_ATTR_MASK_COMPRESSED_CQE
CQE Compression RDMA-Core Capabilities
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mlx5dv_query_devicemlx5dv_cqe_comp_caps
Relevant Man Pages
mlx5dv_create_cq: https://github.com/linux-rdma/rdma-core/blob/master/providers/mlx5/man/mlx5dv_create_cq.3.md
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