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authorDavid S. Miller <davem@davemloft.net>2021-07-08 00:00:14 +0300
committerDavid S. Miller <davem@davemloft.net>2021-07-08 00:00:14 +0300
commitd7fba8ff3e50fb25ffe583bf945df052f6caffa2 (patch)
treecc04bf37e26e2b4210fc8b27f3e7c75ffbf37624 /tools
parent0e02bf5de46ae30074a2e1a8194a422a84482a1a (diff)
parentd322957ebfb9c21c2c72b66680f7c3ccd724e081 (diff)
downloadlinux-d7fba8ff3e50fb25ffe583bf945df052f6caffa2.tar.xz
Merge git://git.kernel.org/pub/scm/linux/kernel/git/pablo/nf
Pablo Neira Ayuso says: ==================== Netfilter fixes for net The following patchset contains Netfilter fixes for net: 1) Do not refresh timeout in SYN_SENT for syn retransmissions. Add selftest for unreplied TCP connection, from Florian Westphal. 2) Fix null dereference from error path with hardware offload in nftables. 3) Remove useless nf_ct_gre_keymap_flush() from netns exit path, from Vasily Averin. 4) Missing rcu read-lock side in ctnetlink helper info dump, also from Vasily. 5) Do not mark RST in the reply direction coming after SYN packet for an out-of-sync entry, from Ali Abdallah and Florian Westphal. 6) Add tcp_ignore_invalid_rst sysctl to allow to disable out of segment RSTs, from Ali. 7) KCSAN fix for nf_conntrack_all_lock(), from Manfred Spraul. 8) Honor NFTA_LAST_SET in nft_last. 9) Fix incorrect arithmetics when restore last_jiffies in nft_last. ==================== Signed-off-by: David S. Miller <davem@davemloft.net>
Diffstat (limited to 'tools')
-rw-r--r--tools/testing/selftests/netfilter/Makefile2
-rwxr-xr-xtools/testing/selftests/netfilter/conntrack_tcp_unreplied.sh167
2 files changed, 168 insertions, 1 deletions
diff --git a/tools/testing/selftests/netfilter/Makefile b/tools/testing/selftests/netfilter/Makefile
index cd6430b39982..8748199ac109 100644
--- a/tools/testing/selftests/netfilter/Makefile
+++ b/tools/testing/selftests/netfilter/Makefile
@@ -5,7 +5,7 @@ TEST_PROGS := nft_trans_stress.sh nft_fib.sh nft_nat.sh bridge_brouter.sh \
conntrack_icmp_related.sh nft_flowtable.sh ipvs.sh \
nft_concat_range.sh nft_conntrack_helper.sh \
nft_queue.sh nft_meta.sh nf_nat_edemux.sh \
- ipip-conntrack-mtu.sh
+ ipip-conntrack-mtu.sh conntrack_tcp_unreplied.sh
LDLIBS = -lmnl
TEST_GEN_FILES = nf-queue
diff --git a/tools/testing/selftests/netfilter/conntrack_tcp_unreplied.sh b/tools/testing/selftests/netfilter/conntrack_tcp_unreplied.sh
new file mode 100755
index 000000000000..e7d7bf13cff5
--- /dev/null
+++ b/tools/testing/selftests/netfilter/conntrack_tcp_unreplied.sh
@@ -0,0 +1,167 @@
+#!/bin/bash
+# SPDX-License-Identifier: GPL-2.0
+#
+# Check that UNREPLIED tcp conntrack will eventually timeout.
+#
+
+# Kselftest framework requirement - SKIP code is 4.
+ksft_skip=4
+ret=0
+
+waittime=20
+sfx=$(mktemp -u "XXXXXXXX")
+ns1="ns1-$sfx"
+ns2="ns2-$sfx"
+
+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
+
+cleanup() {
+ ip netns pids $ns1 | xargs kill 2>/dev/null
+ ip netns pids $ns2 | xargs kill 2>/dev/null
+
+ ip netns del $ns1
+ ip netns del $ns2
+}
+
+ipv4() {
+ echo -n 192.168.$1.2
+}
+
+check_counter()
+{
+ ns=$1
+ name=$2
+ expect=$3
+ local lret=0
+
+ cnt=$(ip netns exec $ns2 nft list counter inet filter "$name" | grep -q "$expect")
+ if [ $? -ne 0 ]; then
+ echo "ERROR: counter $name in $ns2 has unexpected value (expected $expect)" 1>&2
+ ip netns exec $ns2 nft list counter inet filter "$name" 1>&2
+ lret=1
+ fi
+
+ return $lret
+}
+
+# Create test namespaces
+ip netns add $ns1 || exit 1
+
+trap cleanup EXIT
+
+ip netns add $ns2 || exit 1
+
+# Connect the namespace to the host using a veth pair
+ip -net $ns1 link add name veth1 type veth peer name veth2
+ip -net $ns1 link set netns $ns2 dev veth2
+
+ip -net $ns1 link set up dev lo
+ip -net $ns2 link set up dev lo
+ip -net $ns1 link set up dev veth1
+ip -net $ns2 link set up dev veth2
+
+ip -net $ns2 addr add 10.11.11.2/24 dev veth2
+ip -net $ns2 route add default via 10.11.11.1
+
+ip netns exec $ns2 sysctl -q net.ipv4.conf.veth2.forwarding=1
+
+# add a rule inside NS so we enable conntrack
+ip netns exec $ns1 iptables -A INPUT -m state --state established,related -j ACCEPT
+
+ip -net $ns1 addr add 10.11.11.1/24 dev veth1
+ip -net $ns1 route add 10.99.99.99 via 10.11.11.2
+
+# Check connectivity works
+ip netns exec $ns1 ping -q -c 2 10.11.11.2 >/dev/null || exit 1
+
+ip netns exec $ns2 nc -l -p 8080 < /dev/null &
+
+# however, conntrack entries are there
+
+ip netns exec $ns2 nft -f - <<EOF
+table inet filter {
+ counter connreq { }
+ counter redir { }
+ chain input {
+ type filter hook input priority 0; policy accept;
+ ct state new tcp flags syn ip daddr 10.99.99.99 tcp dport 80 counter name "connreq" accept
+ ct state new ct status dnat tcp dport 8080 counter name "redir" accept
+ }
+}
+EOF
+if [ $? -ne 0 ]; then
+ echo "ERROR: Could not load nft rules"
+ exit 1
+fi
+
+ip netns exec $ns2 sysctl -q net.netfilter.nf_conntrack_tcp_timeout_syn_sent=10
+
+echo "INFO: connect $ns1 -> $ns2 to the virtual ip"
+ip netns exec $ns1 bash -c 'while true ; do
+ nc -p 60000 10.99.99.99 80
+ sleep 1
+ done' &
+
+sleep 1
+
+ip netns exec $ns2 nft -f - <<EOF
+table inet nat {
+ chain prerouting {
+ type nat hook prerouting priority 0; policy accept;
+ ip daddr 10.99.99.99 tcp dport 80 redirect to :8080
+ }
+}
+EOF
+if [ $? -ne 0 ]; then
+ echo "ERROR: Could not load nat redirect"
+ exit 1
+fi
+
+count=$(ip netns exec $ns2 conntrack -L -p tcp --dport 80 2>/dev/null | wc -l)
+if [ $count -eq 0 ]; then
+ echo "ERROR: $ns2 did not pick up tcp connection from peer"
+ exit 1
+fi
+
+echo "INFO: NAT redirect added in ns $ns2, waiting for $waittime seconds for nat to take effect"
+for i in $(seq 1 $waittime); do
+ echo -n "."
+
+ sleep 1
+
+ count=$(ip netns exec $ns2 conntrack -L -p tcp --reply-port-src 8080 2>/dev/null | wc -l)
+ if [ $count -gt 0 ]; then
+ echo
+ echo "PASS: redirection took effect after $i seconds"
+ break
+ fi
+
+ m=$((i%20))
+ if [ $m -eq 0 ]; then
+ echo " waited for $i seconds"
+ fi
+done
+
+expect="packets 1 bytes 60"
+check_counter "$ns2" "redir" "$expect"
+if [ $? -ne 0 ]; then
+ ret=1
+fi
+
+if [ $ret -eq 0 ];then
+ echo "PASS: redirection counter has expected values"
+else
+ echo "ERROR: no tcp connection was redirected"
+fi
+
+exit $ret