Re: [RFC v2 -next 0/2] virtio-net: Advised MTU feature
Pankaj Gupta writes: >> >> 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 > > You mean VIRTIO spec? Yes, sorry. >> addition found at >> https://lists.oasis-open.org/archives/virtio-dev/201603/msg1.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. >> >> 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(+) >> >> -- >> 2.5.0 >> >>
Re: [RFC v2 -next 0/2] virtio-net: Advised MTU feature
Rick Jones 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/msg1.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(+) >>
Re: [RFC v2 -next 0/2] virtio-net: Advised MTU feature
> > 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 You mean VIRTIO spec? > addition found at > https://lists.oasis-open.org/archives/virtio-dev/201603/msg1.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. > > 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(+) > > -- > 2.5.0 > >
Re: [RFC v2 -next 0/2] virtio-net: Advised MTU feature
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/msg1.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? 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(+)
