selftests: mptcp: lib: skip if missing symbol

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commit 673004821a upstream.

Selftests are supposed to run on any kernels, including the old ones not
supporting all MPTCP features.

New functions are now available to easily detect if a certain feature is
missing by looking at kallsyms.

These new helpers are going to be used in the following commits. In
order to ease the backport of such future patches, it would be good if
this patch is backported up to the introduction of MPTCP selftests,
hence the Fixes tag below: this type of check was supposed to be done
from the beginning.

Link: https://github.com/multipath-tcp/mptcp_net-next/issues/368
Fixes: 048d19d444 ("mptcp: add basic kselftest for mptcp")
Cc: stable@vger.kernel.org
Signed-off-by: Matthieu Baerts <matthieu.baerts@tessares.net>
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

...

This commit is contained in:

Matthieu Baerts 2023-06-08 18:38:43 +02:00 • committed by Greg Kroah-Hartman

parent 4bed22c687

commit 9ead68270b

2 changed files with 39 additions and 0 deletions

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tools/testing/selftests/net/mptcp/config

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38

tools/testing/selftests/net/mptcp/mptcp_lib.sh

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