We have found it useful to be able to set the linkspeed and duplex settings from the host-side for virtio_net. This obviates the need for guest changes and settings for these fields.
The ability to set linkspeed and duplex was introduced by: 16032be virtio_net: add ethtool support for set and get of settings And using 'ethtool -s' continues to over-write the linkspeed/duplex settings with this patch. The 1/2 patch is against net-next, while the 2/2 patch is the associated qemu changes that would go in after as update-linux-headers.sh should be run first. So 2/2 is more meant as a demonstration of how I intend this to work. Thanks, -Jason Jason Baron (2): virtio_net: allow hypervisor to indicate linkspeed and duplex setting qemu: add linkspeed and duplex setting to virtio-net linux changes: drivers/net/virtio_net.c | 11 ++++++++++- include/uapi/linux/virtio_net.h | 4 ++++ 2 files changed, 14 insertions(+), 1 deletion(-) qemu changes: hw/net/virtio-net.c | 29 +++++++++++++++++++++++++++++ include/hw/virtio/virtio-net.h | 3 +++ include/standard-headers/linux/virtio_net.h | 4 ++++ 3 files changed, 36 insertions(+) -- 2.6.1