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[PATCH v3 2/3] selftests: netfilter: add ipvs nat test case

To: Shuah Khan <shuah@xxxxxxxxxx>, Pablo Neira Ayuso <pablo@xxxxxxxxxxxxx>, "David S. Miller" <davem@xxxxxxxxxxxxx>, Simon Horman <horms@xxxxxxxxxxxx>
Subject: [PATCH v3 2/3] selftests: netfilter: add ipvs nat test case
Cc: Julian Anastasov <ja@xxxxxx>, linux-kernel@xxxxxxxxxxxxxxx, linux-kselftest@xxxxxxxxxxxxxxx, lvs-devel@xxxxxxxxxxxxxxx, netfilter-devel@xxxxxxxxxxxxxxx, Haishuang Yan <yanhaishuang@xxxxxxxxxxxxxxxxxxxx>
From: Haishuang Yan <yanhaishuang@xxxxxxxxxxxxxxxxxxxx>
Date: Tue, 1 Oct 2019 22:19:58 +0800
Test virtual server via NAT.

Tested:
# selftests: netfilter: ipvs.sh
# Testing DR mode...
# Testing NAT mode...
# ipvs.sh: PASS

Signed-off-by: Haishuang Yan <yanhaishuang@xxxxxxxxxxxxxxxxxxxx>
---
 tools/testing/selftests/netfilter/ipvs.sh | 22 +++++++++++++++++++++-
 1 file changed, 21 insertions(+), 1 deletion(-)

diff --git a/tools/testing/selftests/netfilter/ipvs.sh 
b/tools/testing/selftests/netfilter/ipvs.sh
index 6201046..270b5da 100755
--- a/tools/testing/selftests/netfilter/ipvs.sh
+++ b/tools/testing/selftests/netfilter/ipvs.sh
@@ -160,20 +160,40 @@ test_dr() {
     test_service
 }
 
+test_nat() {
+    ip netns exec ns0 ip route add ${vip_v4} via ${gip_v4} dev br0
+
+    ip netns exec ns1 sysctl -qw net.ipv4.ip_forward=1
+    ip netns exec ns1 ipvsadm -A -t ${vip_v4}:${port} -s rr
+    ip netns exec ns1 ipvsadm -a -m -t ${vip_v4}:${port} -r ${rip_v4}:${port}
+    ip netns exec ns1 ip addr add ${vip_v4}/32 dev lo:1
+
+    ip netns exec ns2 ip link del veth20
+    ip netns exec ns2 ip route add default via ${dip_v4} dev veth21
+
+    test_service
+}
+
 run_tests() {
        local errors=
 
        echo "Testing DR mode..."
+       cleanup
        setup
        test_dr
        errors=$(( $errors + $? ))
 
+       echo "Testing NAT mode..."
+       cleanup
+       setup
+       test_nat
+       errors=$(( $errors + $? ))
+
        return $errors
 }
 
 trap cleanup EXIT
 
-cleanup
 run_tests
 
 if [ $? -ne 0 ]; then
-- 
1.8.3.1




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