tree a97b757f47f72cd3a10edad9bc86ad034f2eaf56
parent 5c1208d128e96a54e0083a036b4d95168cc631ce
author Stephen Barber <smbarber@chromium.org> 1576284584 -0800
committer Commit Bot <commit-bot@chromium.org> 1578525013 +0000

devices: net: add control queue for enabling/disabling offloads

Add a control queue for virtio_net, and implement the command to set
available networking offloads.

Set offloads initially when acking features from the guest. We previously set
offloads on unconditionally.

Add TUNSETOFFLOAD to the allowed ioctls for virtio_net.

BUG=chromium:1031413
TEST=boot 5.4 guest, check vmtap offloads enabled with ethtool
TEST=enable ip_forward in guest, check vmtap offloads disabled with ethtool

Change-Id: I4129aa03419798906bd95cf65a6a4ab63069f50b
Reviewed-on: https://chromium-review.googlesource.com/c/chromiumos/platform/crosvm/+/1968200
Reviewed-by: Stephen Barber <smbarber@chromium.org>
Reviewed-by: Daniel Verkamp <dverkamp@chromium.org>
Commit-Queue: Stephen Barber <smbarber@chromium.org>
Tested-by: Stephen Barber <smbarber@chromium.org>
Tested-by: kokoro <noreply+kokoro@google.com>