How to make database aware of RDMA on Pvt Interconnect

One of the customers have installed Mellanox Connect X4 NIC (RoCE) on Bare Metal servers.

Currently, they are testing with 2 node RAC 12c and using these NICs for Private Interconnect to leverage the benefits of RDMA.

Please suggest,

1) How to make database aware of RDMA on Pvt Interconnect?
2) How to check/validate all DB activities over this NICs are using RDMA features?
3) Any DB view to monitor performance metrics for network traffic using RDMA ?

Thanks and Regards,
Sourav

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