drivers: net: loopback: Simulate real hw device

Instead of passing net_pkt as is to the receiving side of the
interface, clone the sent packet and drop the sent one.
This is needed mainly in TCP where passing the same packet from
sending to receiving side is causing havoc.

Signed-off-by: Jukka Rissanen <jukka.rissanen@linux.intel.com>
1 file changed