On Fri, 2017-11-24 at 10:14 -0700, David Ahern wrote: > On 11/22/17 5:30 PM, Solio Sarabia wrote: > > The netdevice gso_max_size is exposed to allow users fine-control > > on > > systems with multiple NICs with different GSO buffer sizes, and > > where > > the virtual devices like bridge and veth, need to be aware of the > > GSO > > size of the underlying devices. > > > > In a virtualized environment, setting the right GSO sizes for > > physical > > and virtual devices makes all TSO work to be on physical NIC, > > improving > > throughput and reducing CPU util. If virtual devices send buffers > > greater than what NIC supports, it forces host to do TSO for > > buffers > > exceeding the limit, increasing CPU utilization in host. > > > > Suggested-by: Shiny Sebastian <shiny.sebast...@intel.com> > > Signed-off-by: Solio Sarabia <solio.sara...@intel.com> > > --- > > This should be added to rtnetlink rather than sysfs.
This is already exposed by rtnetlink [1] Please lets not add yet another net-sysfs knob. [1] c70ce028e834f8e51306217dbdbd441d851c64d3 net/rtnetlink: add IFLA_GSO_MAX_SEGS and IFLA_GSO_MAX_SIZE attributes
