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Message-ID: <138fe27b-7ed1-4065-827c-01e6df483153@kernel.org>
Date: Thu, 2 Oct 2025 12:48:59 +0200
From: Matthieu Baerts <matttbe@...nel.org>
To: Jakub Kicinski <kuba@...nel.org>
Cc: netdev@...r.kernel.org, edumazet@...gle.com, pabeni@...hat.com,
 andrew+netdev@...n.ch, horms@...nel.org, shuah@...nel.org, jv@...sburgh.net,
 olteanv@...il.com, jiri@...nulli.us, mst@...hat.com, jasowang@...hat.com,
 xuanzhuo@...ux.alibaba.com, eperezma@...hat.com, kuniyu@...gle.com,
 martineau@...nel.org, pablo@...filter.org, kadlec@...filter.org,
 fw@...len.de, antonio@...nvpn.net, allison.henderson@...cle.com,
 petrm@...dia.com, razor@...ckwall.org, idosch@...dia.com,
 linux-kselftest@...r.kernel.org, mptcp@...ts.linux.dev,
 netfilter-devel@...r.kernel.org, coreteam@...filter.org, davem@...emloft.net
Subject: Re: [PATCH net] selftests: net: unify the Makefile formats

Hi Jakub,

On 02/10/2025 03:30, Jakub Kicinski wrote:
> We get a significant number of conflicts between net and net-next
> because of selftests Makefile changes. People tend to append new
> test cases at the end of the Makefile when there's no clear sort
> order. Sort all networking selftests Makefiles, use the following
> format:
> 
>  VAR_NAME := \
> 	 entry1 \
> 	 entry2 \
> 	 entry3 \
>  # end of VAR_NAME
> 
> Some Makefiles are already pretty close to this.
> 
> Signed-off-by: Jakub Kicinski <kuba@...nel.org>
> ---
> I think we need to apply this during the merge window, otherwise
> the conflicts will be crazy.

Thank you for having sorted these files to reduce future conflicts
between net and net-next! (Hopefully this will not cause too much
troubles when backporting some patches to stable versions, but I guess
new tests will rarely be backported.)

(...)

> diff --git a/tools/testing/selftests/net/mptcp/Makefile b/tools/testing/selftests/net/mptcp/Makefile
> index 4c7e51336ab2..e3a8dbdc71cd 100644
> --- a/tools/testing/selftests/net/mptcp/Makefile
> +++ b/tools/testing/selftests/net/mptcp/Makefile
> @@ -4,13 +4,31 @@ top_srcdir = ../../../../..
>  
>  CFLAGS += -Wall -Wl,--no-as-needed -O2 -g -I$(top_srcdir)/usr/include $(KHDR_INCLUDES)
>  
> -TEST_PROGS := mptcp_connect.sh mptcp_connect_mmap.sh mptcp_connect_sendfile.sh \
> -	      mptcp_connect_checksum.sh pm_netlink.sh mptcp_join.sh diag.sh \
> -	      simult_flows.sh mptcp_sockopt.sh userspace_pm.sh
> +TEST_PROGS := \
> +	mptcp_connect.sh \
> +	mptcp_connect_mmap.sh \
> +	mptcp_connect_sendfile.sh \
> +	mptcp_connect_checksum.sh \
> +	pm_netlink.sh \
> +	mptcp_join.sh \
> +	diag.sh \
> +	simult_flows.sh \
> +	mptcp_sockopt.sh \
> +	userspace_pm.sh \
> +# end of TEST_GEN_FILES

Strange, I think all other blocks are OK in this patch, except this one:
the order is the same as before (so not sorted by alphabetical order),
and the last line is not "# end of TEST_PROGS" as expected.

I'm sure this detail can be fixed when applying the patch, or with an
extra one if that's easier, instead of sending a v2 and delaying this
type of patch.

Acked-by: Matthieu Baerts (NGI0) <matttbe@...nel.org>

>  
> -TEST_GEN_FILES = mptcp_connect pm_nl_ctl mptcp_sockopt mptcp_inq mptcp_diag
> +TEST_GEN_FILES := \
> +	mptcp_connect \
> +	mptcp_diag \
> +	mptcp_inq \
> +	mptcp_sockopt \
> +	pm_nl_ctl \
> +# end of TEST_GEN_FILES
>  
> -TEST_FILES := mptcp_lib.sh settings
> +TEST_FILES := \
> +	mptcp_lib.sh \
> +	settings \
> +# end of TEST_FILES
>  
>  TEST_INCLUDES := ../lib.sh $(wildcard ../lib/sh/*.sh)

(...)

Cheers,
Matt
-- 
Sponsored by the NGI0 Core fund.


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