Re: [virtio-dev] [PATCH v8] virtio-net: add Max MTU configuration field

2016-09-06 Thread Aaron Conole
Maxime Coquelin writes: > On 09/04/2016 07:50 PM, Michael S. Tsirkin wrote: >> On Sun, Sep 04, 2016 at 10:31:09AM -0400, Aaron Conole wrote: >>> > It is helpful for a host to indicate an advisory MTU value to be set >>> > on guest's NICs other than the assumed 1500

Re: [virtio-dev] [PATCH v8] virtio-net: add Max MTU configuration field

2016-09-06 Thread Aaron Conole
"Michael S. Tsirkin" writes: > On Sun, Sep 04, 2016 at 08:50:57PM +0300, Michael S. Tsirkin wrote: >> On Sun, Sep 04, 2016 at 10:31:09AM -0400, Aaron Conole wrote: >> > It is helpful for a host to indicate an advisory MTU value to be set >> > on guest's NICs other than the

[virtio-dev] [PATCH v9] virtio-net: add Max MTU configuration field

2016-09-06 Thread Aaron Conole
It is helpful for a host to indicate it's MTU to be set on guest NICs other than the assumed 1500 byte value. This helps in situations where the host network is using Jumbo Frames, or aiding in PMTU discovery by configuring a homogenous network. It is also helpful for sizing receive buffers