make -C tools/testing/selftests TARGETS=net TEST_PROGS=test_blackhole_dev..sh TEST_GEN_PROGS="" run_tests
make: Entering directory '/home/virtme/testing-1/tools/testing/selftests'
make[1]: Entering directory '/home/virtme/testing-1/tools/testing/selftests/net'
make[1]: Nothing to be done for 'all'.
make[1]: Leaving directory '/home/virtme/testing-1/tools/testing/selftests/net'
make[1]: Entering directory '/home/virtme/testing-1/tools/testing/selftests/net'
TAP version 13
1..1
# timeout set to 6000
# selftests: net: test_blackhole_dev.sh
[ 1571.804841] blackhole_netdev_xmit(): Dropping skb.
[ 1571.805299] dev_queue_xmit() returned NET_XMIT_SUCCESS
[ 1571.823398] test_blackholedev module terminating.
# test_blackhole_dev: ok
ok 1 selftests: net: test_blackhole_dev.sh
make[1]: Leaving directory '/home/virtme/testing-1/tools/testing/selftests/net'
make: Leaving directory '/home/virtme/testing-1/tools/testing/selftests'
xx__-> echo $?
0
xx__->