Re: [Qemu-devel] [PATCH 0/4] add failover feature for assigned network devices

[Michael S. Tsirkin]

On Wed, May 29, 2019 at 09:48:02AM +0200, Jens Freimann wrote:
> On Tue, May 28, 2019 at 10:40:42PM -0400, Michael S. Tsirkin wrote:
> > On Tue, May 21, 2019 at 08:49:18PM +0200, Jens Freimann wrote:
> > > On Tue, May 21, 2019 at 07:37:19AM -0400, Michael S. Tsirkin wrote:
> > > > On Tue, May 21, 2019 at 09:21:57AM +0200, Jens Freimann wrote:
> > > > Actually is there a list of devices for which this has been tested
> > > > besides mlx5? I think someone said some old intel cards
> > > > don't support this well, we might need to blacklist these ...
> > > 
> > > So far I've tested mlx5 and XL710 which both worked, but I'm
> > > working on testing with more devices. But of course help with testing
> > > is greatly appreciated.
> > 
> > A testing tool that people can run to get a pass/fail
> > result would be needed for that.
> > Do you have something like this?
> 
> I have two simple tools. One that sends packets and another one that
> sniffs for packets to see which device the packet goes to. Find it at
> https://github.com/jensfr/netfailover_driver_detect
> 
> Feedback and/or patches welcome.
> 
> regards,
> Jens

The docs say:
 ./is_legacy -d . If is_legacy returns 0 it means it has received the packets 
sent by send_packet. If it returns 1 it didn't receive the packet. Now run 
./is_legacy -d 


So -d twice. What is the difference?

-- 
MST