Multi-Packet RQ | RDMA Core Migration

Multi-Packet RQ is a receive queue where multiple packets are written to the same WR data buffer. The feature improves performance and reduces memory footprint.

Multi-Packet RQ Experimental vs. RDMA-Core Verbs and Capabilities

Experimental		RDMA-Core
Verbs
ibv_exp_query_device	supported_qps: IBV_EXP_MP_RQ_SUP_TYPE_SRQ_TM IBV_EXP_MP_RQ_SUP_TYPE_WQ_RQ	Not supported by RDMA-Core.
ibv_exp_query_device	allowed_shifts: IBV_EXP_MP_RQ_NO_SHIFT IBV_EXP_MP_RQ_2BYTES_SHIFT	Not supported by RDMA-Core.
ibv_exp_query_device mp_rq_caps	min_single_wqe_log_num_of_strides	mlx5dv_query_device mlx5dv_striding_rq_caps	min_single_wqe_log_num_of_strides
	max_single_wqe_log_num_of_strides		max_single_wqe_log_num_of_strides
	min_single_stride_log_num_of_bytes		min_single_stride_log_num_of_bytes
	max_single_stride_log_num_of_bytes		max_single_stride_log_num_of_bytes
ibv_exp_create_wq	mp_rq	mlx5dv_create_wq	striding_rq_attrs MLX5DV_WQ_INIT_ATTR_MASK_STRIDING_RQ
ibv_exp_poll_cq	mp_wr exp_wc_flagsIBV_EXP_WC_MP_WR_MORE_IN_MSGIBV_EXP_WC_MP_WR_CONSUMEDIBV_EXP_WC_RECV_NOP	Not supported by RDMA-Core.
Capabilities and Device Attributes
IBV_EXP_DEVICE_ATTR_MP_RQ		Not supported by RDMA-Core.
IBV_EXP_MP_RQ_SUP_TYPE_SRQ_TM		Not supported by RDMA-Core.

Last updated: September 16, 2019