Loopback is a networking interface which doesn't actually transfer
any data via link layer externally, and instead just mirrors back
(i.e. any packet send to the loopback interface will be received from
it). This interface very useful for testing.
Signed-off-by: Paul Sokolovsky <paul.sokolovsky@linaro.org>
Make drivers/net/ be the place for misc networking-related drivers
(otherwise, we'd need to have a new dir per driver).
Signed-off-by: Paul Sokolovsky <paul.sokolovsky@linaro.org>