Hi- This might sound crazy, but bear with me. The NFS community is starting to hold virtual interoperability testing events to replace our in-person events that are not feasible due to pandemic-related travel restrictions. I'm told other communities have started doing the same. The virtual event is being held on a private network that is set up using OpenVPN across a large geographical area. I attach my test systems to the VPN to access test systems run by others at other companies. We'd like to continue to include NFS/RDMA testing at these events. This means either RoCEv2 or iWARP, since obviously we can't create an ad hoc wide-area InfiniBand infrastructure. Because the VPN is operating over long distances, we've decided to start with iWARP. However, we are stumbling when it comes to directing the siw driver's traffic onto the tun0 device: [root@oracle-100 ~]# rdma link add siw0 type siw netdev tun0 error: Invalid argument [root@oracle-100 ~]# Has anyone else tried to do this, and what was the approach? Or does siw not yet have this capability? Thanks in advance. -- Chuck Lever
