From 07bf49401909264a38fa3427c3cce43e8304436a Mon Sep 17 00:00:00 2001 From: Matthieu Baerts Date: Thu, 8 Jun 2023 18:38:44 +0200 Subject: [PATCH] selftests: mptcp: connect: skip transp tests if not supported Selftests are supposed to run on any kernels, including the old ones not supporting all MPTCP features. One of them is the support of IP(V6)_TRANSPARENT socket option with MPTCP connections introduced by commit c9406a23c116 ("mptcp: sockopt: add SOL_IP freebind & transparent options"). It is possible to look for "__ip_sock_set_tos" in kallsyms because IP(V6)_TRANSPARENT socket option support has been added after TOS support which came with the required infrastructure in MPTCP sockopt code. To support TOS, the following function has been exported (T). Not great but better than checking for a specific kernel version. Link: https://github.com/multipath-tcp/mptcp_net-next/issues/368 Fixes: 5fb62e9cd3ad ("selftests: mptcp: add tproxy test case") Cc: stable@vger.kernel.org Signed-off-by: Matthieu Baerts Signed-off-by: Jakub Kicinski --- tools/testing/selftests/net/mptcp/mptcp_connect.sh | 10 ++++++++++ 1 file changed, 10 insertions(+) diff --git a/tools/testing/selftests/net/mptcp/mptcp_connect.sh b/tools/testing/selftests/net/mptcp/mptcp_connect.sh index c1f7bac19942..f9c36c6929cc 100755 --- a/tools/testing/selftests/net/mptcp/mptcp_connect.sh +++ b/tools/testing/selftests/net/mptcp/mptcp_connect.sh @@ -144,6 +144,7 @@ cleanup() } mptcp_lib_check_mptcp +mptcp_lib_check_kallsyms ip -Version > /dev/null 2>&1 if [ $? -ne 0 ];then @@ -695,6 +696,15 @@ run_test_transparent() return 0 fi + # IP(V6)_TRANSPARENT has been added after TOS support which came with + # the required infrastructure in MPTCP sockopt code. To support TOS, the + # following function has been exported (T). Not great but better than + # checking for a specific kernel version. + if ! mptcp_lib_kallsyms_has "T __ip_sock_set_tos$"; then + echo "INFO: ${msg} not supported by the kernel: SKIP" + return + fi + ip netns exec "$listener_ns" nft -f /dev/stdin <<"EOF" flush ruleset table inet mangle { -- 2.11.0