Date: Tue, 05 Dec 2023 15:24:32 +0100 From: Kristof Provost <kp@FreeBSD.org> To: Benoit Chesneau <benoitc@enki-multimedia.eu> Cc: freebsd-net@freebsd.org Subject: Re: vxlan with IPv6 underlay ? Message-ID: <3E2D29F7-2B64-45DD-A13B-7BEB799AF9BA@FreeBSD.org> In-Reply-To: <Q4lNxBr17sBg-pHCFTyIugCDvSpd0oXXH6UBv5yEkJtq2lJKIXG_K4MSDarhwkFt7PAFvaLTLdm-rj6MR-ix7B8BfG-7aINXUg5h2a5VkPg=@enki-multimedia.eu> References: <bmkPdpqYkXzCqs5CYfBIZO6sXwmR1hU38pCr5cRlBeTxM4VIbzTj_A0YU6yFP2CbVxXHoOLeqHpdBY1reGJS_VvNBesk3J1HBWblpjijl2o=@enki-multimedia.eu> <793EA8DF-BD26-414A-A12D-866356D339DB@FreeBSD.org> <Q4lNxBr17sBg-pHCFTyIugCDvSpd0oXXH6UBv5yEkJtq2lJKIXG_K4MSDarhwkFt7PAFvaLTLdm-rj6MR-ix7B8BfG-7aINXUg5h2a5VkPg=@enki-multimedia.eu>
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On 5 Dec 2023, at 15:21, Benoit Chesneau wrote: > Changing the mtu wasn't enough. To make it works i had to disable vxlan= offload features: > > ``` > ifconfig mce0 -vxlanhwcsum -vxlanhwtso > ``` > > Then suddenly all started to work. The card is the following: > > ``` > mlx5_core1@pci0:17:0:1: class=3D0x020000 rev=3D0x00 hdr=3D0x00 vendor=3D= 0x15b3 device=3D0x1015 subvendor=3D0x1590 subdevice=3D0x00d4 > vendor =3D 'Mellanox Technologies' > device =3D 'MT27710 Family [ConnectX-4 Lx]' > class =3D network > subclass =3D ethernet > PCI-e errors =3D Correctable Error Detected > Unsupported Request Detected > Corrected =3D Advisory Non-Fatal Error > ``` > > Which is odd. Wonder why it's needed. Thoughts? > Driver bug? I=E2=80=99m not familiar with the mlx5 driver (or hardware), but that=E2=80= =99d be my guess. The first step in debugging that would be to figure out which one of thos= e offload features is responsible, and probably also capturing traffic (o= utside of this machine) to see if anything is sent and if so how it=E2=80= =99s broken. Best regards, Kristof
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