On 10/20/2022 4:42 PM, Long Li wrote:

quoted

[Bernard wrote...]

quoted

quoted

+	props->max_qp_wr = MAX_SEND_BUFFERS_PER_QUEUE;
+
+	/*
+	 * max_cqe could be potentially much bigger.
+	 * As this version of driver only support RAW QP, set it to the same
+	 * value as max_qp_wr
+	 */
+	props->max_cqe = MAX_SEND_BUFFERS_PER_QUEUE;
+
+	props->max_mr_size = MANA_IB_MAX_MR_SIZE;
+	props->max_mr = INT_MAX;

How the 24 bit wide MR keys can handle INT_MAX unique
MR's?

Not sure if I understand this correctly, lkey and rkey are u32 in ib_mr.

The upper 8 bits of an ib_mr remote token are reserved for use as a
rotating key, this allows a consumer to more safely reuse an ib_mr
without having to overallocate large region pools.

Tom.