selftests: forwarding: add wait_for_dev() helper
The existing setup_wait*() helper family check the status of the interface to be up. Introduce wait_for_dev() to wait for the netdevice to appear, for example after test script does manual device bind. Signed-off-by:Jiri Pirko <jiri@nvidia.com> Reviewed-by:
Petr Machata <petrm@nvidia.com> Reviewed-by:
Benjamin Poirier <bpoirier@nvidia.com> Signed-off-by:
Paolo Abeni <pabeni@redhat.com>
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