12/05/2021 16:51, Bing Zhao: > From: Thomas Monjalon <tho...@monjalon.net> > > 12/05/2021 16:36, Bing Zhao: > > > When switching to the Devx interface, the kernel driver behavior > > may > > > > What do you mean by "switching"? > > I mean when changing the Rxq from Verbs API to Devx API.
How do we switch? > > > be different from using Verbs. The Tx loopback cannot work > > properly > > > even if the Tx and Rx queues are configured with loopback > > attribute. > > > To support self loopback for Tx, a Verbs dummy queue pair needs to > > be > > > created to trigger the kernel to enable the loopback. > > > > > > This is only required when TIR is created for Rx and loopback is > > > needed. Only CQ and QP are needed for this case, no WQ(RQ) needs > > to be > > > created.
