Rick Jones <rick.jon...@hpe.com> writes: > On 03/15/2016 02:04 PM, Aaron Conole wrote: >> The following series adds the ability for a hypervisor to set an MTU on the >> guest during feature negotiation phase. This is useful for VM orchestration >> when, for instance, tunneling is involved and the MTU of the various systems >> should be homogenous. >> >> The first patch adds the feature bit as described in the proposed VFIO spec >> addition found at >> https://lists.oasis-open.org/archives/virtio-dev/201603/msg00001.html >> >> The second patch adds a user of the bit, and a warning when the guest changes >> the MTU from the hypervisor advised MTU. Future patches may add more thorough >> error handling. > > How do you see this interacting with VMs getting MTU settings via DHCP?
This is intended for networks where the VMs are not given MTU via DHCP. I don't think it should negatively interfere with such a network. Does that make sense? -Aaron > rick jones > >> >> v2: >> * Whitespace and code style cleanups from Sergei Shtylyov and Paolo Abeni >> * Additional test before printing a warning >> >> Aaron Conole (2): >> virtio: Start feature MTU support >> virtio_net: Read the advised MTU >> >> drivers/net/virtio_net.c | 12 ++++++++++++ >> include/uapi/linux/virtio_net.h | 3 +++ >> 2 files changed, 15 insertions(+) >>
