Add new configuration for offloading features, including
Checksum/TSO/UFO, and set these offloading features as
enabled by default.
Fixes: #4792.
Signed-off-by: Yong He <alexyonghe@tencent.com>
To synthesize the interactions between the virtio-net device and the tap
interface, the fuzzer utilizes a pair of unix domain sockets: one socket
(e.g. the dummy tap frontend) is used to construct the 'net_util::Tap'
instance for creating a virtio-net device; the other socket (e.g. the
dummy tap backend) is used in a epoll loop for handling the tx and rx
requests from the virtio-net device.
Signed-off-by: Bo Chen <chen.bo@intel.com>