From 619ae8e0697a6fb85b99b19137590c7c337c579e Mon Sep 17 00:00:00 2001 From: Florian Westphal Date: Mon, 22 Jun 2020 10:28:32 +0200 Subject: [PATCH] selftests: netfilter: add test case for conntrack helper assignment check that 'nft ... ct helper set ' works: 1. configure ftp helper via nft and assign it to connections on port 2121 2. check with 'conntrack -L' that the next connection has the ftp helper attached to it. Also add a test for auto-assign (old behaviour). Signed-off-by: Florian Westphal Signed-off-by: Pablo Neira Ayuso --- tools/testing/selftests/netfilter/Makefile | 2 +- .../netfilter/nft_conntrack_helper.sh | 175 ++++++++++++++++++ 2 files changed, 176 insertions(+), 1 deletion(-) create mode 100755 tools/testing/selftests/netfilter/nft_conntrack_helper.sh diff --git a/tools/testing/selftests/netfilter/Makefile b/tools/testing/selftests/netfilter/Makefile index 9c0f758310fe..a179f0dca8ce 100644 --- a/tools/testing/selftests/netfilter/Makefile +++ b/tools/testing/selftests/netfilter/Makefile @@ -3,7 +3,7 @@ TEST_PROGS := nft_trans_stress.sh nft_nat.sh bridge_brouter.sh \ conntrack_icmp_related.sh nft_flowtable.sh ipvs.sh \ - nft_concat_range.sh \ + nft_concat_range.sh nft_conntrack_helper.sh \ nft_queue.sh LDLIBS = -lmnl diff --git a/tools/testing/selftests/netfilter/nft_conntrack_helper.sh b/tools/testing/selftests/netfilter/nft_conntrack_helper.sh new file mode 100755 index 000000000000..edf0a48da6bf --- /dev/null +++ b/tools/testing/selftests/netfilter/nft_conntrack_helper.sh @@ -0,0 +1,175 @@ +#!/bin/bash +# +# This tests connection tracking helper assignment: +# 1. can attach ftp helper to a connection from nft ruleset. +# 2. auto-assign still works. +# +# Kselftest framework requirement - SKIP code is 4. +ksft_skip=4 +ret=0 + +sfx=$(mktemp -u "XXXXXXXX") +ns1="ns1-$sfx" +ns2="ns2-$sfx" +testipv6=1 + +cleanup() +{ + ip netns del ${ns1} + ip netns del ${ns2} +} + +nft --version > /dev/null 2>&1 +if [ $? -ne 0 ];then + echo "SKIP: Could not run test without nft tool" + exit $ksft_skip +fi + +ip -Version > /dev/null 2>&1 +if [ $? -ne 0 ];then + echo "SKIP: Could not run test without ip tool" + exit $ksft_skip +fi + +conntrack -V > /dev/null 2>&1 +if [ $? -ne 0 ];then + echo "SKIP: Could not run test without conntrack tool" + exit $ksft_skip +fi + +which nc >/dev/null 2>&1 +if [ $? -ne 0 ];then + echo "SKIP: Could not run test without netcat tool" + exit $ksft_skip +fi + +trap cleanup EXIT + +ip netns add ${ns1} +ip netns add ${ns2} + +ip link add veth0 netns ${ns1} type veth peer name veth0 netns ${ns2} > /dev/null 2>&1 +if [ $? -ne 0 ];then + echo "SKIP: No virtual ethernet pair device support in kernel" + exit $ksft_skip +fi + +ip -net ${ns1} link set lo up +ip -net ${ns1} link set veth0 up + +ip -net ${ns2} link set lo up +ip -net ${ns2} link set veth0 up + +ip -net ${ns1} addr add 10.0.1.1/24 dev veth0 +ip -net ${ns1} addr add dead:1::1/64 dev veth0 + +ip -net ${ns2} addr add 10.0.1.2/24 dev veth0 +ip -net ${ns2} addr add dead:1::2/64 dev veth0 + +load_ruleset_family() { + local family=$1 + local ns=$2 + +ip netns exec ${ns} nft -f - < /dev/null |grep -q 'helper=ftp' + if [ $? -ne 0 ] ; then + echo "FAIL: ${netns} did not show attached helper $message" 1>&2 + ret=1 + fi + + echo "PASS: ${netns} connection on port $port has ftp helper attached" 1>&2 + return 0 +} + +test_helper() +{ + local port=$1 + local msg=$2 + + sleep 3 | ip netns exec ${ns2} nc -w 2 -l -p $port > /dev/null & + + sleep 1 + sleep 1 | ip netns exec ${ns1} nc -w 2 10.0.1.2 $port > /dev/null & + + check_for_helper "$ns1" "ip $msg" $port + check_for_helper "$ns2" "ip $msg" $port + + wait + + if [ $testipv6 -eq 0 ] ;then + return 0 + fi + + ip netns exec ${ns1} conntrack -F 2> /dev/null + ip netns exec ${ns2} conntrack -F 2> /dev/null + + sleep 3 | ip netns exec ${ns2} nc -w 2 -6 -l -p $port > /dev/null & + + sleep 1 + sleep 1 | ip netns exec ${ns1} nc -w 2 -6 dead:1::2 $port > /dev/null & + + check_for_helper "$ns1" "ipv6 $msg" $port + check_for_helper "$ns2" "ipv6 $msg" $port + + wait +} + +load_ruleset_family ip ${ns1} +if [ $? -ne 0 ];then + echo "FAIL: ${ns1} cannot load ip ruleset" 1>&2 + exit 1 +fi + +load_ruleset_family ip6 ${ns1} +if [ $? -ne 0 ];then + echo "SKIP: ${ns1} cannot load ip6 ruleset" 1>&2 + testipv6=0 +fi + +load_ruleset_family inet ${ns2} +if [ $? -ne 0 ];then + echo "SKIP: ${ns1} cannot load inet ruleset" 1>&2 + load_ruleset_family ip ${ns2} + if [ $? -ne 0 ];then + echo "FAIL: ${ns2} cannot load ip ruleset" 1>&2 + exit 1 + fi + + if [ $testipv6 -eq 1 ] ;then + load_ruleset_family ip6 ${ns2} + if [ $? -ne 0 ];then + echo "FAIL: ${ns2} cannot load ip6 ruleset" 1>&2 + exit 1 + fi + fi +fi + +test_helper 2121 "set via ruleset" +ip netns exec ${ns1} sysctl -q 'net.netfilter.nf_conntrack_helper=1' +ip netns exec ${ns2} sysctl -q 'net.netfilter.nf_conntrack_helper=1' +test_helper 21 "auto-assign" + +exit $ret -- 2.34.1