netdev - [PATCH net-next 01/13] selftests: mptcp: stop forcing iptables-legacy

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Message-Id: <20240305-upstream-net-next-20240304-selftests-mptcp-shared-code-shellcheck-v1-1-66618ea5504e@kernel.org>
Date: Tue, 05 Mar 2024 11:42:31 +0100
From: "Matthieu Baerts (NGI0)" <matttbe@...nel.org>
To: mptcp@...ts.linux.dev, Mat Martineau <martineau@...nel.org>, 
 Geliang Tang <geliang@...nel.org>, "David S. Miller" <davem@...emloft.net>, 
 Eric Dumazet <edumazet@...gle.com>, Jakub Kicinski <kuba@...nel.org>, 
 Paolo Abeni <pabeni@...hat.com>, Shuah Khan <shuah@...nel.org>
Cc: netdev@...r.kernel.org, linux-kselftest@...r.kernel.org, 
 linux-kernel@...r.kernel.org, "Matthieu Baerts (NGI0)" <matttbe@...nel.org>, 
 Pablo Neira Ayuso <pablo@...filter.org>
Subject: [PATCH net-next 01/13] selftests: mptcp: stop forcing
 iptables-legacy

Commit 0c4cd3f86a40 ("selftests: mptcp: join: use 'iptables-legacy' if
available") and commit a5a5990c099d ("selftests: mptcp: sockopt: use
'iptables-legacy' if available") forced using iptables-legacy if
available.

This was needed because of some issues that were visible when testing
the kselftests on a v5.15.x with iptables-nft as default backend. It
looks like these errors are no longer present. As mentioned by Pablo [1],
the errors were maybe due to missing kernel config. We can then use
iptables-nft if it is the default one, instead of using a legacy tool.

We can then check the variables iptables and ip6tables are valid. We can
keep the variables to easily change it later or add options.

Link: https://lore.kernel.org/netdev/ZbFiixyMFpQnxzCH@calendula/ [1]
Suggested-by: Pablo Neira Ayuso <pablo@...filter.org>
Reviewed-by: Mat Martineau <martineau@...nel.org>
Signed-off-by: Matthieu Baerts (NGI0) <matttbe@...nel.org>
---
 tools/testing/selftests/net/mptcp/mptcp_join.sh    | 12 ++++--------
 tools/testing/selftests/net/mptcp/mptcp_sockopt.sh | 12 ++++--------
 2 files changed, 8 insertions(+), 16 deletions(-)

diff --git a/tools/testing/selftests/net/mptcp/mptcp_join.sh b/tools/testing/selftests/net/mptcp/mptcp_join.sh
index 955ee651dcd5..6a4af95cd4c3 100755
--- a/tools/testing/selftests/net/mptcp/mptcp_join.sh
+++ b/tools/testing/selftests/net/mptcp/mptcp_join.sh
@@ -167,15 +167,11 @@ check_tools()
 		exit $ksft_skip
 	fi

-	# Use the legacy version if available to support old kernel versions
-	if iptables-legacy -V &> /dev/null; then
-		iptables="iptables-legacy"
-		ip6tables="ip6tables-legacy"
-	elif ! iptables -V &> /dev/null; then
-		echo "SKIP: Could not run all tests without iptables tool"
+	if ! "${iptables}" -V &> /dev/null; then
+		echo "SKIP: Could not run all tests without ${iptables} tool"
 		exit $ksft_skip
-	elif ! ip6tables -V &> /dev/null; then
-		echo "SKIP: Could not run all tests without ip6tables tool"
+	elif ! "${ip6tables}" -V &> /dev/null; then
+		echo "SKIP: Could not run all tests without ${ip6tables} tool"
 		exit $ksft_skip
 	fi
 }
diff --git a/tools/testing/selftests/net/mptcp/mptcp_sockopt.sh b/tools/testing/selftests/net/mptcp/mptcp_sockopt.sh
index c643872ddf47..dac8e1fc7143 100755
--- a/tools/testing/selftests/net/mptcp/mptcp_sockopt.sh
+++ b/tools/testing/selftests/net/mptcp/mptcp_sockopt.sh
@@ -96,15 +96,11 @@ if [ $? -ne 0 ];then
 	exit $ksft_skip
 fi

-# Use the legacy version if available to support old kernel versions
-if iptables-legacy -V &> /dev/null; then
-	iptables="iptables-legacy"
-	ip6tables="ip6tables-legacy"
-elif ! iptables -V &> /dev/null; then
-	echo "SKIP: Could not run all tests without iptables tool"
+if ! "${iptables}" -V &> /dev/null; then
+	echo "SKIP: Could not run all tests without ${iptables} tool"
 	exit $ksft_skip
-elif ! ip6tables -V &> /dev/null; then
-	echo "SKIP: Could not run all tests without ip6tables tool"
+elif ! "${ip6tables}" -V &> /dev/null; then
+	echo "SKIP: Could not run all tests without ${ip6tables} tool"
 	exit $ksft_skip
 fi

-- 
2.43.0