Date: Sun, 11 Feb 2024 05:50:36 +0200 From: Konstantin Belousov <kostikbel@gmail.com> To: Benoit Chesneau <benoitc@enki-multimedia.eu> Cc: "freebsd-net@FreeBSD.org" <freebsd-net@freebsd.org> Subject: Re: mlx5en issue with SR-IOV when using in the bridge Message-ID: <ZchEDCj66kNE_nKD@kib.kiev.ua> In-Reply-To: <7L4ctsvv8st_6uOSAw8Li1SvAPsNYXPWjv3rRepGpwcRdl900YajxFSLe3frQl4hUE28PKU5lf98gRpN7WlZG7u2FWgOf3BImZu4spzI3Sg=@enki-multimedia.eu> References: <7L4ctsvv8st_6uOSAw8Li1SvAPsNYXPWjv3rRepGpwcRdl900YajxFSLe3frQl4hUE28PKU5lf98gRpN7WlZG7u2FWgOf3BImZu4spzI3Sg=@enki-multimedia.eu>
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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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