[PATCH 5.15.y] selftests: mptcp: sockopt: use 'iptables-legacy' if available

[Date Prev][Date Next][Thread Prev][Thread Next][Date Index][Thread Index]

 



commit a5a5990c099dd354e05e89ee77cd2dbf6655d4a1 upstream.

IPTables commands using 'iptables-nft' fail on old kernels, at least
on v5.15 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: dc65fe82fb07 ("selftests: mptcp: add packet mark test case")
Cc: stable@xxxxxxxxxxxxxxx
Acked-by: Paolo Abeni <pabeni@xxxxxxxxxx>
Signed-off-by: Matthieu Baerts <matthieu.baerts@xxxxxxxxxxxx>
Signed-off-by: David S. Miller <davem@xxxxxxxxxxxxx>
Signed-off-by: Matthieu Baerts <matthieu.baerts@xxxxxxxxxxxx>
---
Backport notes:
  - it was conflicting with some cleanup patches: b71dd705179c
    ("selftests: mptcp: removed defined but unused vars") and
    5f17f8e315ad ("selftests: mptcp: declare var as local")
  - conflicts were in the same context but not with the code that needed
    to be adapted.
---
 .../selftests/net/mptcp/mptcp_sockopt.sh      | 20 ++++++++++---------
 1 file changed, 11 insertions(+), 9 deletions(-)

diff --git a/tools/testing/selftests/net/mptcp/mptcp_sockopt.sh b/tools/testing/selftests/net/mptcp/mptcp_sockopt.sh
index d5c79e4a8f1e..3432d11e0a03 100755
--- a/tools/testing/selftests/net/mptcp/mptcp_sockopt.sh
+++ b/tools/testing/selftests/net/mptcp/mptcp_sockopt.sh
@@ -13,13 +13,15 @@ timeout_poll=30
 timeout_test=$((timeout_poll * 2 + 1))
 mptcp_connect=""
 do_all_tests=1
+iptables="iptables"
+ip6tables="ip6tables"
 
 add_mark_rules()
 {
 	local ns=$1
 	local m=$2
 
-	for t in iptables ip6tables; do
+	for t in ${iptables} ${ip6tables}; do
 		# just to debug: check we have multiple subflows connection requests
 		ip netns exec $ns $t -A OUTPUT -p tcp --syn -m mark --mark $m -j ACCEPT
 
@@ -90,14 +92,14 @@ if [ $? -ne 0 ];then
 	exit $ksft_skip
 fi
 
-iptables -V > /dev/null 2>&1
-if [ $? -ne 0 ];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
-
-ip6tables -V > /dev/null 2>&1
-if [ $? -ne 0 ];then
+elif ! ip6tables -V &> /dev/null; then
 	echo "SKIP: Could not run all tests without ip6tables tool"
 	exit $ksft_skip
 fi
@@ -107,10 +109,10 @@ check_mark()
 	local ns=$1
 	local af=$2
 
-	tables=iptables
+	tables=${iptables}
 
 	if [ $af -eq 6 ];then
-		tables=ip6tables
+		tables=${ip6tables}
 	fi
 
 	counters=$(ip netns exec $ns $tables -v -L OUTPUT | grep DROP)
-- 
2.40.1




[Index of Archives]     [Linux Kernel]     [Kernel Development Newbies]     [Linux USB Devel]     [Video for Linux]     [Linux Audio Users]     [Yosemite Hiking]     [Linux Kernel]     [Linux SCSI]

  Powered by Linux