Hi Thomas, > -----Original Message----- > From: Thomas Monjalon <tho...@monjalon.net> > Sent: Wednesday, May 12, 2021 10:49 PM > To: Bing Zhao <bi...@nvidia.com> > Cc: Slava Ovsiienko <viachesl...@nvidia.com>; Matan Azrad > <ma...@nvidia.com>; dev@dpdk.org; Ori Kam <or...@nvidia.com>; Raslan > Darawsheh <rasl...@nvidia.com>; sta...@dpdk.org > Subject: Re: [PATCH] net/mlx5: fix loopback for DV queue > > External email: Use caution opening links or attachments > > > 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. > > > 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. > > > > This requirement comes from bugzilla 312, more details can refer > to: > > It is not 312. > > > https://bugs.dpdk.org/show_bug.cgi?id=645 I will change it. > > You can remove above lines, because the tag below is enough. > > > > Bugzilla ID: 645 > > > > Fixes: 6deb19e1b2d2 ("net/mlx5: separate Rx queue object > creations") > > Cc: sta...@dpdk.org > > > > Signed-off-by: Bing Zhao <bi...@nvidia.com> > > Acked-by: Viacheslav Ovsiienko <viachesl...@nvidia.com> > > Thanks
