linux-toradex.git/tools/testing/selftests/net, branch v5.13

selftests/net: Add icmp.sh for testing ICMP dummy address responses

2021-06-18T19:13:24+00:00

This adds a new icmp.sh selftest for testing that the kernel will respond
correctly with an ICMP unreachable message with the dummy (192.0.0.8)
source address when there are no IPv4 addresses configured to use as source
addresses.

Signed-off-by: Toke Høiland-Jørgensen 
Reviewed-by: David Ahern 
Signed-off-by: David S. Miller

selftests: net: use bash to run udpgro_fwd test case

2021-06-16T19:56:10+00:00

udpgro_fwd.sh contains many bash specific operators ("[[", "local -r"),
but it's using /bin/sh; in some distro /bin/sh is mapped to /bin/dash,
that doesn't support such operators.

Force the test to use /bin/bash explicitly and prevent false positive
test failures.

Signed-off-by: Andrea Righi 
Signed-off-by: David S. Miller

selftests: net: veth: make test compatible with dash

2021-06-16T19:50:24+00:00

veth.sh is a shell script that uses /bin/sh; some distro (Ubuntu for
example) use dash as /bin/sh and in this case the test reports the
following error:

 # ./veth.sh: 21: local: -r: bad variable name
 # ./veth.sh: 21: local: -r: bad variable name

This happens because dash doesn't support the option "-r" with local.

Moreover, in case of missing bpf object, the script is exiting -1, that
is an illegal number for dash:

 exit: Illegal number: -1

Change the script to be compatible both with bash and dash and prevent
the errors above.

Signed-off-by: Andrea Righi 
Signed-off-by: David S. Miller

ipv4: Fix device used for dst_alloc with local routes

2021-06-14T19:30:53+00:00

Oliver reported a use case where deleting a VRF device can hang
waiting for the refcnt to drop to 0. The root cause is that the dst
is allocated against the VRF device but cached on the loopback
device.

The use case (added to the selftests) has an implicit VRF crossing
due to the ordering of the FIB rules (lookup local is before the
l3mdev rule, but the problem occurs even if the FIB rules are
re-ordered with local after l3mdev because the VRF table does not
have a default route to terminate the lookup). The end result is
is that the FIB lookup returns the loopback device as the nexthop,
but the ingress device is in a VRF. The mismatch causes the dst
alloc against the VRF device but then cached on the loopback.

The fix is to bring the trick used for IPv6 (see ip6_rt_get_dev_rcu):
pick the dst alloc device based the fib lookup result but with checks
that the result has a nexthop device (e.g., not an unreachable or
prohibit entry).

Fixes: f5a0aab84b74 ("net: ipv4: dst for local input routes should use l3mdev if relevant")
Reported-by: Oliver Herms 
Signed-off-by: David Ahern 
Signed-off-by: David S. Miller

selftests: mptcp: enable syncookie only in absence of reorders

2021-06-10T23:47:45+00:00

Syncookie validation may fail for OoO packets, causing spurious
resets and self-tests failures, so let's force syncookie only
for tests iteration with no OoO.

Fixes: fed61c4b584c ("selftests: mptcp: make 2nd net namespace use tcp syn cookies unconditionally")
Closes: https://github.com/multipath-tcp/mptcp_net-next/issues/198
Signed-off-by: Paolo Abeni 
Signed-off-by: Mat Martineau 
Signed-off-by: David S. Miller

mptcp: update selftest for fallback due to OoO

2021-05-28T20:51:40+00:00

The previous commit noted that we can have fallback
scenario due to OoO (or packet drop). Update the self-tests
accordingly

Signed-off-by: Paolo Abeni 
Signed-off-by: Mat Martineau 
Signed-off-by: Jakub Kicinski

kbuild: replace LANG=C with LC_ALL=C

2021-05-01T15:43:35+00:00

LANG gives a weak default to each LC_* in case it is not explicitly
defined. LC_ALL, if set, overrides all other LC_* variables.

  LANG  <  LC_CTYPE, LC_COLLATE, LC_MONETARY, LC_NUMERIC, ...  <  LC_ALL

This is why documentation such as [1] suggests to set LC_ALL in build
scripts to get the deterministic result.

LANG=C is not strong enough to override LC_* that may be set by end
users.

[1]: https://reproducible-builds.org/docs/locales/

Signed-off-by: Masahiro Yamada 
Acked-by: Michael Ellerman  (powerpc)
Reviewed-by: Matthias Maennich 
Acked-by: Matthieu Baerts  (mptcp)
Reviewed-by: Greg Kroah-Hartman

selftests/net: bump timeout to 5 minutes

2021-04-23T21:08:58+00:00

We found that with the latest mainline kernel (5.12.0-051200rc8) on
some KVM instances / bare-metal systems, the following tests will take
longer than the kselftest framework default timeout (45 seconds) to
run and thus got terminated with TIMEOUT error:
* xfrm_policy.sh - took about 2m20s
* pmtu.sh - took about 3m5s
* udpgso_bench.sh - took about 60s

Bump the timeout setting to 5 minutes to allow them have a chance to
finish.

https://bugs.launchpad.net/bugs/1856010
Signed-off-by: Po-Hsu Lin 
Signed-off-by: David S. Miller

selftests: mptcp: add a test case for MSG_PEEK

2021-04-23T21:06:32+00:00

Extend mptcp_connect tool with MSG_PEEK support and add a test case in
mptcp_connect.sh that checks the data received from/after recv() with
MSG_PEEK.

Acked-by: Paolo Abeni 
Co-developed-by: Matthieu Baerts 
Signed-off-by: Matthieu Baerts 
Signed-off-by: Yonglong Li 
Signed-off-by: Mat Martineau 
Signed-off-by: David S. Miller

selftests: mlxsw: Fix mausezahn invocation in ERSPAN scale test

2021-04-23T21:01:28+00:00

The mirror_gre_scale test creates as many ERSPAN sessions as the underlying
chip supports, and tests that they all work. In order to determine that it
issues a stream of ICMP packets and checks if they are mirrored as
expected.

However, the mausezahn invocation missed the -6 flag to identify the use of
IPv6 protocol, and was sending ICMP messages over IPv6, as opposed to
ICMP6. It also didn't pass an explicit source IP address, which apparently
worked at some point in the past, but does not anymore.

To fix these issues, extend the function mirror_test() in mirror_lib by
detecting the IPv6 protocol addresses, and using a different ICMP scheme.
Fix __mirror_gre_test() in the selftest itself to pass a source IP address.

Signed-off-by: Petr Machata 
Signed-off-by: David S. Miller