Commit d83013bd authored by Matthieu Baerts's avatar Matthieu Baerts Committed by Paolo Abeni
Browse files

selftests: mptcp: connect: skip if MPTCP is not supported 

Selftests are supposed to run on any kernels, including the old ones not
supporting MPTCP.

A new check is then added to make sure MPTCP is supported. If not, the
test stops and is marked as "skipped". Note that this check can also
mark the test as failed if 'SELFTESTS_MPTCP_LIB_EXPECT_ALL_FEATURES' env
var is set to 1: by doing that, we can make sure a test is not being
skipped by mistake.

A new shared file is added here to be able to re-used the same check in
the different selftests we have.

Link: https://github.com/multipath-tcp/mptcp_net-next/issues/368


Fixes: 048d19d4 ("mptcp: add basic kselftest for mptcp")
Cc: stable@vger.kernel.org
Acked-by: default avatarPaolo Abeni <pabeni@redhat.com>
Signed-off-by: default avatarMatthieu Baerts <matthieu.baerts@tessares.net>
Signed-off-by: default avatarPaolo Abeni <pabeni@redhat.com>
parent d328fe87

tools/testing/selftests/net/mptcp/Makefile

+1 −1
Original line number Diff line number Diff line
@@ -9,7 +9,7 @@ TEST_PROGS := mptcp_connect.sh pm_netlink.sh mptcp_join.sh diag.sh \ 


TEST_GEN_FILES = mptcp_connect pm_nl_ctl mptcp_sockopt mptcp_inq



TEST_FILES := settings

TEST_FILES := mptcp_lib.sh settings



EXTRA_CLEAN := *.pcap

tools/testing/selftests/net/mptcp/mptcp_connect.sh

+4 −0
Original line number Diff line number Diff line 
#!/bin/bash

# SPDX-License-Identifier: GPL-2.0



. "$(dirname "${0}")/mptcp_lib.sh"



time_start=$(date +%s)



optstring="S:R:d:e:l:r:h4cm:f:tC"
@@ -141,6 +143,8 @@ cleanup() 
	done

}



mptcp_lib_check_mptcp



ip -Version > /dev/null 2>&1

if [ $? -ne 0 ];then

	echo "SKIP: Could not run test without ip tool"

tools/testing/selftests/net/mptcp/mptcp_lib.sh

0 → 100644
+40 −0
Original line number Diff line number Diff line 
#! /bin/bash

# SPDX-License-Identifier: GPL-2.0



readonly KSFT_FAIL=1

readonly KSFT_SKIP=4



# SELFTESTS_MPTCP_LIB_EXPECT_ALL_FEATURES env var can be set when validating all

# features using the last version of the kernel and the selftests to make sure

# a test is not being skipped by mistake.

mptcp_lib_expect_all_features() {

	[ "${SELFTESTS_MPTCP_LIB_EXPECT_ALL_FEATURES:-}" = "1" ]

}



# $1: msg

mptcp_lib_fail_if_expected_feature() {

	if mptcp_lib_expect_all_features; then

		echo "ERROR: missing feature: ${*}"

		exit ${KSFT_FAIL}

	fi



	return 1

}



# $1: file

mptcp_lib_has_file() {

	local f="${1}"



	if [ -f "${f}" ]; then

		return 0

	fi



	mptcp_lib_fail_if_expected_feature "${f} file not found"

}



mptcp_lib_check_mptcp() {

	if ! mptcp_lib_has_file "/proc/sys/net/mptcp/enabled"; then

		echo "SKIP: MPTCP support is not available"

		exit ${KSFT_SKIP}

	fi

}