[Qemu-devel] [RFC 0/4] virtio-net: Add support to MTU feature

[Maxime Coquelin <maxime.coquelin@redhat.com>]

This series is based on on-going RFC from Aaron Conole which defines
a way for the host to expose its max MTU to the guest [0].

Using it, the guest can size its receive buffers accordingly, and if
GRO is disabled, can disable the mergeable buffers to improve performance.

In this version, the only way to pass the MTU relies on the added MTU protocol
feature, but it could also be done with a new property.

Thanks,
Maxime

[0]: https://lists.oasis-open.org/archives/virtio-dev/201609/msg00021.html

Maxime Coquelin (4):
  virtio-net: reuse MTU related bits from Linux header
  vhost-user: Add new protocol feature MTU
  vhost-net: Add new MTU feature support
  virtio-net: Add MTU feature support

 hw/net/vhost_net.c                          | 11 +++++++++++
 hw/net/virtio-net.c                         | 16 ++++++++++++++++
 hw/virtio/vhost-user.c                      | 11 +++++++++++
 include/hw/virtio/vhost.h                   |  1 +
 include/hw/virtio/virtio-net.h              |  1 +
 include/net/vhost_net.h                     |  2 ++
 include/standard-headers/linux/virtio_net.h |  3 +++
 7 files changed, 45 insertions(+)

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2.7.4