Re: Chelsio (cxgbe) VF on FreeBSD guest under KVM requires -rxcsum

John Nielsen <[email protected]> Fri, 26 Sep 2025 12:47:15 -0600

Newsgroups	gmane.os.freebsd.devel.net
Message-ID	<C55B8932-0DA7-42F5-9D9D-78CB55A0B100__45819.3166343094$1758912493$gmane$org@jnielsen.net>

> On Sep 26, 2025, at 2:09 AM, Ronald Klop <[email protected]> wrote:
> 
> This sounds very similar to the scenario that is fixed in 16-CURRENT and 15 with delayed checksum in a virtual environment.
> 
> These are some of the commits around this, but there are more commits involved.
> https://cgit.freebsd.org/src/commit/?id=39d4094173f9a49ff52f5f4408e4dbd5d6ef0409
> https://cgit.freebsd.org/src/commit/?id=bcb298fa9e23c1192c5707086a67d3b396186abc
> 
> I also remember bug reports about this case, but don't have the link availabie.

Thank your for the response! I plan to try updating to 15 soon but I’m not sure those commits are relevant. The first is about epair which I am not using and the second is for a bug with routing under KVM using virtio networking IIRC.

JN