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selftests: mptcp: join: use 'iptables-legacy' if available

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commit 0c4cd3f86a upstream.

IPTables commands using 'iptables-nft' fail on old kernels, at least
5.15 because it doesn't see the default IPTables chains:

  $ iptables -L
  iptables/1.8.2 Failed to initialize nft: Protocol not supported

As a first step before switching to NFTables, we can use iptables-legacy
if available.

Link: https://github.com/multipath-tcp/mptcp_net-next/issues/368
Fixes: 8d014eaa92 ("selftests: mptcp: add ADD_ADDR timeout test case")
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 2023-06-10 18:11:37 +02:00 committed by Greg Kroah-Hartman
parent 44d3366bf4
commit 4d65ec947d
1 changed files with 12 additions and 6 deletions
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18
tools/testing/selftests/net/mptcp/mptcp_join.sh
View file

@ -25,6 +25,8 @@ capout=""
ns1=""
ns2=""
ksft_skip=4
iptables="iptables"
ip6tables="ip6tables"
timeout_poll=30
timeout_test=$((timeout_poll * 2 + 1))
capture=0
@ -141,7 +143,11 @@ check_tools()
exit $ksft_skip
fi
if ! iptables -V &> /dev/null; then
# 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"
exit $ksft_skip
fi
@ -239,9 +245,9 @@ reset_with_add_addr_timeout()
reset "${1}" || return 1
tables="iptables"
tables="${iptables}"
if [ $ip -eq 6 ]; then
tables="ip6tables"
tables="${ip6tables}"
fi
ip netns exec $ns1 sysctl -q net.mptcp.add_addr_timeout=1
@ -306,9 +312,9 @@ reset_with_fail()
local ip="${3:-4}"
local tables
tables="iptables"
tables="${iptables}"
if [ $ip -eq 6 ]; then
tables="ip6tables"
tables="${ip6tables}"
fi
ip netns exec $ns2 $tables \
@ -678,7 +684,7 @@ filter_tcp_from()
local src="${2}"
local target="${3}"
ip netns exec "${ns}" iptables -A INPUT -s "${src}" -p tcp -j "${target}"
ip netns exec "${ns}" ${iptables} -A INPUT -s "${src}" -p tcp -j "${target}"
}
do_transfer()