Joe Damato wrote: > Add an epoll busy poll test using netdevsim. > > This test is comprised of: > - busy_poller (via busy_poller.c) > - busy_poll_test.sh which loads netdevsim, sets up network namespaces, > and runs busy_poller to receive data and socat to send data. > > The selftest tests two different scenarios: > - busy poll (the pre-existing version in the kernel) > - busy poll with suspend enabled (what this series adds) > > The data transmit is a 1MiB temporary file generated from /dev/urandom > and the test is considered passing if the md5sum of the input file to > socat matches the md5sum of the output file from busy_poller. > > netdevsim was chosen instead of veth due to netdevsim's support for > netdev-genl. > > For now, this test uses the functionality that netdevsim provides. In the > future, perhaps netdevsim can be extended to emulate device IRQs to more > thoroughly test all pre-existing kernel options (like defer_hard_irqs) > and suspend. > > Signed-off-by: Joe Damato <jdamato@xxxxxxxxxx> > Co-developed-by: Martin Karsten <mkarsten@xxxxxxxxxxxx> > Signed-off-by: Martin Karsten <mkarsten@xxxxxxxxxxxx> > Acked-by: Stanislav Fomichev <sdf@xxxxxxxxxxx> Reviewed-by: Willem de Bruijn <willemb@xxxxxxxxxx> minor nit that ULONG_MAX can not be true with uint32_t on 64-bit platforms. Definitely no need to respin just for that.
