[lvc-project] [REGRESSION] [PATCH v2] net: missing check virtio

[Blake Sperling]

Hello, I noticed a regression from v.6.6.43 to v6.6.44 caused by this
commit.

When using virtio NIC with a QEMU/KVM Windows guest, network traffic from
the VM stalls in the outbound (upload) direction.This affects remote access
and file shares most noticeably, and the inbound (download) direction does
not have the issue.

iperf3 will show consistent results, 0 bytes/sec when initiating a test
within the guest to a server on LAN, and reverse will be full speed.
Nothing out of the ordinary in host dmesg or guest Event Viewer while the
behavior is being displayed.

Crucially, this only seems to affect Windows guests, Ubuntu guest with the
same NIC configuration tests fine both directions.
I wonder if NetKVM guest drivers may be related, the current latest version
of the drivers (v248) did not make a difference, but it is several months
old.

Let me know if there are any further tests or info I can provide, thanks!
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