diff --git a/tools/testing/selftests/net/mptcp/diag.sh b/tools/testing/selftests/net/mptcp/diag.sh
index 6c5f84f59898c9..c114434954ae69 100755
--- a/tools/testing/selftests/net/mptcp/diag.sh
+++ b/tools/testing/selftests/net/mptcp/diag.sh
@@ -4,7 +4,6 @@
 . "$(dirname "${0}")/mptcp_lib.sh"
 
 mptcp_lib_init_ns
-ksft_skip=4
 
 flush_pids()
 {
@@ -32,12 +31,12 @@ mptcp_lib_check_mptcp
 ip -Version > /dev/null 2>&1
 if [ $? -ne 0 ];then
 	echo "SKIP: Could not run test without ip tool"
-	exit $ksft_skip
+	exit ${KSFT_SKIP}
 fi
 ss -h | grep -q MPTCP
 if [ $? -ne 0 ];then
 	echo "SKIP: ss tool does not support MPTCP"
-	exit $ksft_skip
+	exit ${KSFT_SKIP}
 fi
 
 get_msk_inuse()
diff --git a/tools/testing/selftests/net/mptcp/mptcp_connect.sh b/tools/testing/selftests/net/mptcp/mptcp_connect.sh
index a926493a349ee8..e41f96254f8471 100755
--- a/tools/testing/selftests/net/mptcp/mptcp_connect.sh
+++ b/tools/testing/selftests/net/mptcp/mptcp_connect.sh
@@ -8,7 +8,6 @@ time_start=$(date +%s)
 optstring="S:R:d:e:l:r:h4cm:f:tC"
 final_ret=0
 cin_disconnect=""
-ksft_skip=4
 ipv6=true
 ethtool_random_on=true
 tc_delay="$((RANDOM%50))"
@@ -136,7 +135,7 @@ mptcp_lib_check_kallsyms
 ip -Version > /dev/null 2>&1
 if [ $? -ne 0 ];then
 	echo "SKIP: Could not run test without ip tool"
-	exit $ksft_skip
+	exit ${KSFT_SKIP}
 fi
 
 capout=$(mktemp)
@@ -145,7 +144,7 @@ cout_disconnect="$cout".disconnect
 trap cleanup EXIT
 
 for i in "$ns1" "$ns2" "$ns3" "$ns4";do
-	ip netns add $i || exit $ksft_skip
+	ip netns add $i || exit ${KSFT_SKIP}
 	ip -net $i link set lo up
 done
 
@@ -238,7 +237,7 @@ fi
 check_mptcp_disabled()
 {
 	local disabled_ns="ns_disabled-$rndh"
-	ip netns add ${disabled_ns} || exit $ksft_skip
+	ip netns add ${disabled_ns} || exit ${KSFT_SKIP}
 
 	# net.mptcp.enabled should be enabled by default
 	if [ "$(ip netns exec ${disabled_ns} sysctl net.mptcp.enabled | awk '{ print $3 }')" -ne 1 ]; then
diff --git a/tools/testing/selftests/net/mptcp/mptcp_join.sh b/tools/testing/selftests/net/mptcp/mptcp_join.sh
index f11d473549371c..3dfe20b00220c9 100755
--- a/tools/testing/selftests/net/mptcp/mptcp_join.sh
+++ b/tools/testing/selftests/net/mptcp/mptcp_join.sh
@@ -17,7 +17,6 @@ cinfail=""
 cinsent=""
 tmpfile=""
 capout=""
-ksft_skip=4
 ip_mptcp=0
 check_invert=0
 validate_checksum=false
@@ -68,7 +67,7 @@ init_partial()
 
 	local netns
 	for netns in "$ns1" "$ns2"; do
-		ip netns add $netns || exit $ksft_skip
+		ip netns add $netns || exit ${KSFT_SKIP}
 		ip -net $netns link set lo up
 		ip netns exec $netns sysctl -q net.mptcp.enabled=1
 		ip netns exec $netns sysctl -q net.mptcp.pm_type=0 2>/dev/null || true
@@ -132,7 +131,7 @@ check_tools()
 
 	if ! ip -Version &> /dev/null; then
 		echo "SKIP: Could not run test without ip tool"
-		exit $ksft_skip
+		exit ${KSFT_SKIP}
 	fi
 
 	# Use the legacy version if available to support old kernel versions
@@ -141,10 +140,10 @@ check_tools()
 		ip6tables="ip6tables-legacy"
 	elif ! iptables -V &> /dev/null; then
 		echo "SKIP: Could not run all tests without iptables tool"
-		exit $ksft_skip
+		exit ${KSFT_SKIP}
 	elif ! ip6tables -V &> /dev/null; then
 		echo "SKIP: Could not run all tests without ip6tables tool"
-		exit $ksft_skip
+		exit ${KSFT_SKIP}
 	fi
 }
 
@@ -399,15 +398,15 @@ setup_fail_rules()
 		-p tcp \
 		-m length --length 150:9999 \
 		-m statistic --mode nth --packet 1 --every 99999 \
-		-j MARK --set-mark 42 || return ${ksft_skip}
+		-j MARK --set-mark 42 || return ${KSFT_SKIP}
 
-	tc -n $ns2 qdisc add dev ns2eth$i clsact || return ${ksft_skip}
+	tc -n $ns2 qdisc add dev ns2eth$i clsact || return ${KSFT_SKIP}
 	tc -n $ns2 filter add dev ns2eth$i egress \
 		protocol ip prio 1000 \
 		handle 42 fw \
 		action pedit munge offset 148 u8 invert \
 		pipe csum tcp \
-		index 100 || return ${ksft_skip}
+		index 100 || return ${KSFT_SKIP}
 }
 
 reset_with_fail()
@@ -421,7 +420,7 @@ reset_with_fail()
 	local rc=0
 	setup_fail_rules "${@}" || rc=$?
 
-	if [ ${rc} -eq ${ksft_skip} ]; then
+	if [ ${rc} -eq ${KSFT_SKIP} ]; then
 		mark_as_skipped "unable to set the 'fail' rules"
 		return 1
 	fi
diff --git a/tools/testing/selftests/net/mptcp/mptcp_sockopt.sh b/tools/testing/selftests/net/mptcp/mptcp_sockopt.sh
index 019d4dc91d708a..fccc5c50405029 100755
--- a/tools/testing/selftests/net/mptcp/mptcp_sockopt.sh
+++ b/tools/testing/selftests/net/mptcp/mptcp_sockopt.sh
@@ -3,8 +3,6 @@
 
 . "$(dirname "${0}")/mptcp_lib.sh"
 
-ksft_skip=4
-
 mptcp_lib_init_ns
 
 add_mark_rules()
@@ -29,7 +27,7 @@ init()
 {
 	local netns
 	for netns in "$ns1" "$ns2" "$ns3";do
-		ip netns add $netns || exit $ksft_skip
+		ip netns add $netns || exit ${KSFT_SKIP}
 		ip -net $netns link set lo up
 		ip netns exec $netns sysctl -q net.mptcp.enabled=1
 		ip netns exec $netns sysctl -q net.ipv4.conf.all.rp_filter=0
@@ -80,7 +78,7 @@ mptcp_lib_check_kallsyms
 ip -Version > /dev/null 2>&1
 if [ $? -ne 0 ];then
 	echo "SKIP: Could not run test without ip tool"
-	exit $ksft_skip
+	exit ${KSFT_SKIP}
 fi
 
 # Use the legacy version if available to support old kernel versions
@@ -89,10 +87,10 @@ if iptables-legacy -V &> /dev/null; then
 	ip6tables="ip6tables-legacy"
 elif ! iptables -V &> /dev/null; then
 	echo "SKIP: Could not run all tests without iptables tool"
-	exit $ksft_skip
+	exit ${KSFT_SKIP}
 elif ! ip6tables -V &> /dev/null; then
 	echo "SKIP: Could not run all tests without ip6tables tool"
-	exit $ksft_skip
+	exit ${KSFT_SKIP}
 fi
 
 check_mark()
diff --git a/tools/testing/selftests/net/mptcp/pm_netlink.sh b/tools/testing/selftests/net/mptcp/pm_netlink.sh
index 208669f474cf20..422aac2bfaf6ef 100755
--- a/tools/testing/selftests/net/mptcp/pm_netlink.sh
+++ b/tools/testing/selftests/net/mptcp/pm_netlink.sh
@@ -3,8 +3,6 @@
 
 . "$(dirname "${0}")/mptcp_lib.sh"
 
-ksft_skip=4
-
 usage() {
 	echo "Usage: $0 [ -h ]"
 }
@@ -37,12 +35,12 @@ mptcp_lib_check_mptcp
 ip -Version > /dev/null 2>&1
 if [ $? -ne 0 ];then
 	echo "SKIP: Could not run test without ip tool"
-	exit $ksft_skip
+	exit ${KSFT_SKIP}
 fi
 
 trap cleanup EXIT
 
-ip netns add $ns1 || exit $ksft_skip
+ip netns add $ns1 || exit ${KSFT_SKIP}
 ip -net $ns1 link set lo up
 ip netns exec $ns1 sysctl -q net.mptcp.enabled=1
 
diff --git a/tools/testing/selftests/net/mptcp/simult_flows.sh b/tools/testing/selftests/net/mptcp/simult_flows.sh
index ad589c7699a1de..1fb2cb5d6b5ff9 100755
--- a/tools/testing/selftests/net/mptcp/simult_flows.sh
+++ b/tools/testing/selftests/net/mptcp/simult_flows.sh
@@ -4,7 +4,6 @@
 . "$(dirname "${0}")/mptcp_lib.sh"
 
 mptcp_lib_init_ns
-ksft_skip=4
 bail=0
 slack=50
 
@@ -32,7 +31,7 @@ mptcp_lib_check_mptcp
 ip -Version > /dev/null 2>&1
 if [ $? -ne 0 ];then
 	echo "SKIP: Could not run test without ip tool"
-	exit $ksft_skip
+	exit ${KSFT_SKIP}
 fi
 
 #  "$ns1"              ns2                    ns3
@@ -54,7 +53,7 @@ setup()
 	trap cleanup EXIT
 
 	for i in "$ns1" "$ns2" "$ns3";do
-		ip netns add $i || exit $ksft_skip
+		ip netns add $i || exit ${KSFT_SKIP}
 		ip -net $i link set lo up
 		ip netns exec $i sysctl -q net.ipv4.conf.all.rp_filter=0
 		ip netns exec $i sysctl -q net.ipv4.conf.default.rp_filter=0