Document the additional step necessary to create large VFs for iavf when using ice kernel driver v1.13.7 or later.
Signed-off-by: Bruce Richardson <bruce.richard...@intel.com> --- doc/guides/nics/intel_vf.rst | 5 +++++ 1 file changed, 5 insertions(+) diff --git a/doc/guides/nics/intel_vf.rst b/doc/guides/nics/intel_vf.rst index 708cb85417..eb939df41a 100644 --- a/doc/guides/nics/intel_vf.rst +++ b/doc/guides/nics/intel_vf.rst @@ -138,6 +138,11 @@ Intel\ |reg| E800 Series Ethernet devices: for example: ``-a 18:00.0,quanta_size=2048``. The default value is 1024, and quanta size should be set as the product of 64 in legacy host interface mode. +* When using the Intel out-of-tree "ice" PF/kernel driver v1.13.7 or later, + to create VFs with >16 queues (aka. "large VFs"), + it is necessary to change the rss_lut_vf_addr setting in sysfs from the default of 64 to 512. + This can be done using the following command for the first VF on an interface: + ``echo 512 > /sys/class/net/<PF interface>/device/virtfn0/rss_lut_vf_attr`` The PCIE host-interface of Intel Ethernet Switch FM10000 Series VF infrastructure ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ -- 2.43.0
