netdev - Re: [PATCH net] selftests: mptcp: depends on built-in IPv6

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Date:   Wed, 21 Oct 2020 17:35:32 -0700 (PDT)
From:   Mat Martineau <mathew.j.martineau@...ux.intel.com>
To:     Matthieu Baerts <matthieu.baerts@...sares.net>
cc:     "David S. Miller" <davem@...emloft.net>,
        Jakub Kicinski <kuba@...nel.org>,
        Shuah Khan <shuah@...nel.org>,
        Geert Uytterhoeven <geert@...ux-m68k.org>,
        netdev@...r.kernel.org, mptcp@...ts.01.org,
        linux-kselftest@...r.kernel.org, linux-kernel@...r.kernel.org
Subject: Re: [PATCH net] selftests: mptcp: depends on built-in IPv6

On Wed, 21 Oct 2020, Matthieu Baerts wrote:

> Recently, CONFIG_MPTCP_IPV6 no longer selects CONFIG_IPV6. As a
> consequence, if CONFIG_MPTCP_IPV6=y is added to the kconfig, it will no
> longer ensure CONFIG_IPV6=y. If it is not enabled, CONFIG_MPTCP_IPV6
> will stay disabled and selftests will fail.
>
> We also need CONFIG_IPV6 to be built-in. For more details, please see
> commit 0ed37ac586c0 ("mptcp: depends on IPV6 but not as a module").
>
> Note that 'make kselftest-merge' will take all 'config' files found in
> 'tools/testsing/selftests'. Because some of them already set
> CONFIG_IPV6=y, MPTCP selftests were still passing. But they will fail if
> MPTCP selftests are launched manually after having executed this command
> to prepare the kernel config:
>
>  ./scripts/kconfig/merge_config.sh -m .config \
>      ./tools/testing/selftests/net/mptcp/config
>
> Fixes: 010b430d5df5 ("mptcp: MPTCP_IPV6 should depend on IPV6 instead of selecting it")
> Signed-off-by: Matthieu Baerts <matthieu.baerts@...sares.net>
> ---
> tools/testing/selftests/net/mptcp/config | 1 +
> 1 file changed, 1 insertion(+)
>

Reviewed-by: Mat Martineau <mathew.j.martineau@...ux.intel.com>

--
Mat Martineau
Intel