vmx: strange issue, related to to tso?

Andriy Gapon avg at FreeBSD.org
Sun Dec 29 11:06:44 UTC 2019

On 28/12/2019 06:43, Patrick Kelsey wrote:
> I am not able to test this at the moment, nor likely in the very near future,
> but I did have a few minutes to do some code reading and now believe that the
> following is part of the problem, if not the entire problem.  Using r353803 as a
> reference, I believe line 1323 in sys/dev/vmware/vmxnet3/if_vmx.c (in
> vmxnet3_isc_txd_encap()) should be:
> sop->hlen = hdrlen + ipi->ipi_tcp_hlen;
> instead of the current:
> sop->hlen = hdrlen;
> This can be seen by going back to r333813 and examining the CSUM_TSO case of
> vmxnet3_txq_offload_ctx().  The final increment of *start in that case is what
> was literally lost in translation when converting the driver to iflib.


thank you very much!
The change (with s/ipi->/pi->/) fixes the problem for me.

Andriy Gapon

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