Added the new section in the document regarding XDP support by hv_netvsc driver. Signed-off-by: Haiyang Zhang <haiyangz@xxxxxxxxxxxxx> --- .../networking/device_drivers/microsoft/netvsc.txt | 14 ++++++++++++++ 1 file changed, 14 insertions(+) diff --git a/Documentation/networking/device_drivers/microsoft/netvsc.txt b/Documentation/networking/device_drivers/microsoft/netvsc.txt index 3bfa635..69ccfca 100644 --- a/Documentation/networking/device_drivers/microsoft/netvsc.txt +++ b/Documentation/networking/device_drivers/microsoft/netvsc.txt @@ -82,3 +82,17 @@ Features contain one or more packets. The send buffer is an optimization, the driver will use slower method to handle very large packets or if the send buffer area is exhausted. + + XDP support + ----------- + XDP (eXpress Data Path) is a feature that runs eBPF bytecode at the early + stage when packets arrive at a NIC card. The goal is to increase performance + for packet processing, reducing the overhead of SKB allocation and other + upper network layers. + + hv_netvsc supports XDP in native mode, and transparently sets the XDP + program on the associated VF NIC as well. + + XDP program cannot run with LRO (RSC) enabled, so you need to disable LRO + before running XDP: + ethtool -K eth0 lro off -- 1.8.3.1
