Date: Mon, 12 Feb 2024 08:30:37 +0000 From: Benoit Chesneau <benoitc@enki-multimedia.eu> To: Konstantin Belousov <kostikbel@gmail.com> Cc: "freebsd-net@FreeBSD.org" <freebsd-net@freebsd.org> Subject: Re: mlx5en issue with SR-IOV when using in the bridge Message-ID: <VHVL58KsFi0lfUvo1Jz8Vfd2TuGQfzAEDOH8Zh-hDLIbqIpJv45Fh0wuKVaIVOtkC36WZq_QRWqTbUy4NszEgg871l07fG08N7BXRSqV1RI=@enki-multimedia.eu> In-Reply-To: <ZchEDCj66kNE_nKD@kib.kiev.ua> References: <7L4ctsvv8st_6uOSAw8Li1SvAPsNYXPWjv3rRepGpwcRdl900YajxFSLe3frQl4hUE28PKU5lf98gRpN7WlZG7u2FWgOf3BImZu4spzI3Sg=@enki-multimedia.eu> <ZchEDCj66kNE_nKD@kib.kiev.ua>
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Hi Konstantin,
indeed the port is plugged to a switch. The port is enabled. So yes that probably is. Is this a firmware issue or can it be solved in the driver?
Benoît
On Sunday, February 11th, 2024 at 04:50, Konstantin Belousov <kostikbel@gmail.com> wrote:
> On Sat, Feb 10, 2024 at 09:23:36AM +0000, Benoit Chesneau wrote:
>
> > I have tested the following scenario:
> >
> > Setup the mellanox driver with SRIOV:
> >
> > ```
> > $ sudo more /etc/iov/mce0.conf
> > PF {
> > device: "mlx5_core0";
> > num_vfs: 8;
> > }
> >
> > DEFAULT {
> > passthrough: true;
> > }
> >
> > VF-0 {
> > mac-addr: "02:01:02:02:01:00";
> > }
> >
> > VF-1 {
> > mac-addr: "02:01:02:02:01:01";
> > }
> >
> > VF-2 {
> > passthrough: false;}
> >
> > ```
> >
> > With one VF in the vm answering to a specific vlan, and one jail on the host using vnet with the PF in a bridge and a epair interface added to this bridge.
> >
> > When I am pinging from the jail to the VF in the vm , the vm receive the ping or arp requests. But the jail doesn't receive the response. In a same manner , when I ping from the VM to the jail, the host is not found. bridge arp doesn't return the vm mac address.
> >
> > All the hosts has the PF interface set in promiscuous mode but this doesn't seem to be enough to allows the bridge to learn other mac ids. When I directly add the IP to PF, Ping works from the vm to the PF, the reverse is also true.
> >
> > Do I miss a setting? Is this expected with mellanox cards? What shoudl I look for?
>
>
> Do you have the port plugged into a switch and the port enabled?
> I suspect VFs do not have enough hairpin code to do proper loopback
> communications, and I certain that multicast loopback does not work.
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