@@ -1,8 +1,7 @@
#!/bin/bash
# SPDX-License-Identifier: GPL-2.0
-# Kselftest framework requirement - SKIP code is 4.
-ksft_skip=4
+source lib.sh
# Conntrack needs to reassemble fragments in order to have complete
# packets for rule matching. Reassembly can lead to packet loss.
@@ -23,15 +22,8 @@ ksft_skip=4
# between Client A and Client B over WAN. Wanrouter has MTU 1400 set
# on its interfaces.
-rnd=$(mktemp -u XXXXXXXX)
rx=$(mktemp)
-r_a="ns-ra-$rnd"
-r_b="ns-rb-$rnd"
-r_w="ns-rw-$rnd"
-c_a="ns-ca-$rnd"
-c_b="ns-cb-$rnd"
-
checktool (){
if ! $1 > /dev/null 2>&1; then
echo "SKIP: Could not $2"
@@ -40,29 +32,31 @@ checktool (){
}
checktool "iptables --version" "run test without iptables"
-checktool "ip -Version" "run test without ip tool"
-checktool "which socat" "run test without socat"
-checktool "ip netns add ${r_a}" "create net namespace"
+checktool "socat -h" "run test without socat"
-for n in ${r_b} ${r_w} ${c_a} ${c_b};do
- ip netns add ${n}
-done
+setup_ns r_a r_b r_w c_a c_b
cleanup() {
- for n in ${r_a} ${r_b} ${r_w} ${c_a} ${c_b};do
- ip netns del ${n}
- done
+ cleanup_all_ns
rm -f ${rx}
}
trap cleanup EXIT
+listener_ready()
+{
+ ns="$1"
+ port="$2"
+ ss -N "$ns" -lnu -o "sport = :$port" | grep -q "$port"
+}
+
test_path() {
msg="$1"
ip netns exec ${c_b} socat -t 3 - udp4-listen:5000,reuseaddr > ${rx} < /dev/null &
- sleep 1
+ busywait $BUSYWAIT_TIMEOUT listener_ready "$c_b" 5000
+
for i in 1 2 3; do
head -c1400 /dev/zero | tr "\000" "a" | \
ip netns exec ${c_a} socat -t 1 -u STDIN UDP:192.168.20.2:5000
@@ -129,7 +123,7 @@ r_addr="10.2.2.1"
ip netns exec ${r_b} ip link add ipip0 type ipip local ${l_addr} remote ${r_addr} mode ipip || exit $ksft_skip
-for dev in lo veth0 veth1 ipip0; do
+for dev in veth0 veth1 ipip0; do
ip -net ${r_b} link set $dev up
done
@@ -142,21 +136,18 @@ ip netns exec ${r_b} sysctl -q net.ipv4.conf.all.forwarding=1 > /dev/null
# Client A
ip -net ${c_a} addr add 192.168.10.2/24 dev veth0
-ip -net ${c_a} link set dev lo up
ip -net ${c_a} link set dev veth0 up
ip -net ${c_a} route add default via 192.168.10.1
# Client A
ip -net ${c_b} addr add 192.168.20.2/24 dev veth0
ip -net ${c_b} link set dev veth0 up
-ip -net ${c_b} link set dev lo up
ip -net ${c_b} route add default via 192.168.20.1
# Wan
ip -net ${r_w} addr add 10.2.2.254/24 dev veth0
ip -net ${r_w} addr add 10.4.4.254/24 dev veth1
-ip -net ${r_w} link set dev lo up
ip -net ${r_w} link set dev veth0 up mtu 1400
ip -net ${r_w} link set dev veth1 up mtu 1400
Signed-off-by: Florian Westphal <fw@strlen.de> --- .../net/netfilter/conntrack_ipip_mtu.sh | 37 +++++++------------ 1 file changed, 14 insertions(+), 23 deletions(-)