Staging
v0.8.1
v0.8.1
https://github.com/torvalds/linux
Tip revision: 19c329f6808995b142b3966301f217c831e7cf31 authored by Linus Torvalds on 18 January 2021, 00:37:05 UTC
Linux 5.11-rc4
Linux 5.11-rc4
Tip revision: 19c329f
nft_conntrack_helper.sh
#!/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 - <<EOF
table $family raw {
ct helper ftp {
type "ftp" protocol tcp
}
chain pre {
type filter hook prerouting priority 0; policy accept;
tcp dport 2121 ct helper set "ftp"
}
chain output {
type filter hook output priority 0; policy accept;
tcp dport 2121 ct helper set "ftp"
}
}
EOF
return $?
}
check_for_helper()
{
local netns=$1
local message=$2
local port=$3
if echo $message |grep -q 'ipv6';then
local family="ipv6"
else
local family="ipv4"
fi
ip netns exec ${netns} conntrack -L -f $family -p tcp --dport $port 2> /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 | ip netns exec ${ns1} nc -w 2 10.0.1.2 $port > /dev/null &
sleep 1
check_for_helper "$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 | ip netns exec ${ns1} nc -w 2 -6 dead:1::2 $port > /dev/null &
sleep 1
check_for_helper "$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