Has anyone gotten SMB Direct working between a Win 11 PC and a KSMB server with a direct connection (no switch).

I have a windows 11 PC, I have been running KSMB on my proxmox host. They are connected directly with a 10G SFP+ link

I decided to try and get SMB Direct to work to solve a latency problem I have been having.

Have confirmed RDMA is working and gotten them to exchange RDMA traffic. However, I cannot get windows to recognize the adapter as RDMA capable.

Thinking this is because I have no switch so it won't enable PFC?

❯ Get-NetAdapterRdma

Name InterfaceDescription Enabled Operational PFC ETS

---- -------------------- ------- ----------- --- ---

10G-1 Mellanox ConnectX-4 Lx Ethernet Adapter True True False False

10G-2 Mellanox ConnectX-4 Lx Ethernet Adapter… True True False False

❯ Get-SmbClientNetworkInterface

Interface Index RSS Capable RDMA Capable Speed IpAddresses

--------------- ----------- ------------ ----- -----------

19 True False 10 Gbps {fe80::526b:4bff:fe38:9ceb, 172.16.10.15}

47 False False 100 Gbps {100.100.0.23}

14 False False 0 bps {fe80::526b:4bff:fe38:9cea}

20 False False 2.5 Gbps {2604:5500:7051:7e00:7656:3cff:fe6f:e0f9, fd00:ab:cd:0:7656:3cff:…

5 False False 0 bps {fe80::f2a6:54ff:fe13:ae6f}

3 False False 0 bps {fe80::f0a6:54ff:fe13:8e4f}

12 False False 0 bps {fe80::f0a6:54ff:fe13:9e5f}

Wondering if anyone has gotten this to work with a similar setup?