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IPsec E2E: Add pod to node traffic test #30038

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46807c4
IPsec E2E: Add pod to node traffic test
pperiyasamy Jul 31, 2025
871a44b
Restrict ipsec nncp config to icmp protocol
pperiyasamy Jul 31, 2025
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45 changes: 37 additions & 8 deletions test/extended/networking/ipsec.go
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Original file line number Diff line number Diff line change
Expand Up @@ -86,6 +86,8 @@ spec:
esp: aes_gcm256
ikev2: insist
type: transport
leftprotoport: icmp
rightprotoport: icmp
`

// properties of nsCertMachineConfigFile.
Expand Down Expand Up @@ -336,7 +338,7 @@ var _ = g.Describe("[sig-network][Feature:IPsec]", g.Ordered, func() {
return nil
}

setupTestPods := func(config *testConfig, isHostNetwork bool) error {
setupTestPods := func(config *testConfig, isSrcPingPodInHostNetwork, isDstPingPodInHostNetwork bool) error {
tcpdumpImage, err := exutil.DetermineImageFromRelease(context.TODO(), oc, "network-tools")
o.Expect(err).NotTo(o.HaveOccurred())
createSync := errgroup.Group{}
Expand All @@ -348,7 +350,7 @@ var _ = g.Describe("[sig-network][Feature:IPsec]", g.Ordered, func() {
}
srcPingPod := e2epod.CreateExecPodOrFail(context.TODO(), f.ClientSet, f.Namespace.Name, "ipsec-test-srcpod-", func(p *corev1.Pod) {
p.Spec.NodeName = config.srcNodeConfig.nodeName
p.Spec.HostNetwork = isHostNetwork
p.Spec.HostNetwork = isSrcPingPodInHostNetwork
})
config.srcNodeConfig.pingPod, err = f.ClientSet.CoreV1().Pods(f.Namespace.Name).Get(context.TODO(), srcPingPod.Name, metav1.GetOptions{})
return err
Expand All @@ -361,7 +363,7 @@ var _ = g.Describe("[sig-network][Feature:IPsec]", g.Ordered, func() {
}
dstPingPod := e2epod.CreateExecPodOrFail(context.TODO(), f.ClientSet, f.Namespace.Name, "ipsec-test-dstpod-", func(p *corev1.Pod) {
p.Spec.NodeName = config.dstNodeConfig.nodeName
p.Spec.HostNetwork = isHostNetwork
p.Spec.HostNetwork = isDstPingPodInHostNetwork
})
config.dstNodeConfig.pingPod, err = f.ClientSet.CoreV1().Pods(f.Namespace.Name).Get(context.TODO(), dstPingPod.Name, metav1.GetOptions{})
return err
Expand All @@ -388,7 +390,7 @@ var _ = g.Describe("[sig-network][Feature:IPsec]", g.Ordered, func() {

checkForGeneveOnlyPodTraffic := func(config *testConfig) {
g.GinkgoHelper()
err := setupTestPods(config, false)
err := setupTestPods(config, false, false)
o.Expect(err).NotTo(o.HaveOccurred())
defer func() {
// Don't cleanup test pods in error scenario.
Expand All @@ -410,7 +412,7 @@ var _ = g.Describe("[sig-network][Feature:IPsec]", g.Ordered, func() {

checkForESPOnlyPodTraffic := func(config *testConfig) {
g.GinkgoHelper()
err := setupTestPods(config, false)
err := setupTestPods(config, false, false)
o.Expect(err).NotTo(o.HaveOccurred())
defer func() {
// Don't cleanup test pods in error scenario.
Expand All @@ -430,7 +432,7 @@ var _ = g.Describe("[sig-network][Feature:IPsec]", g.Ordered, func() {

checkForNATTOnlyPodTraffic := func(config *testConfig) {
g.GinkgoHelper()
err := setupTestPods(config, false)
err := setupTestPods(config, false, false)
o.Expect(err).NotTo(o.HaveOccurred())
defer func() {
// Don't cleanup test pods in error scenario.
Expand Down Expand Up @@ -461,7 +463,7 @@ var _ = g.Describe("[sig-network][Feature:IPsec]", g.Ordered, func() {

checkNodeTraffic := func(mode v1.IPsecMode) {
g.GinkgoHelper()
err := setupTestPods(config, true)
err := setupTestPods(config, true, true)
o.Expect(err).NotTo(o.HaveOccurred())
defer func() {
// Don't cleanup test pods in error scenario.
Expand All @@ -483,6 +485,30 @@ var _ = g.Describe("[sig-network][Feature:IPsec]", g.Ordered, func() {
}
}

checkPodToNodeTraffic := func(mode v1.IPsecMode) {
g.GinkgoHelper()
err := setupTestPods(config, false, true)
o.Expect(err).NotTo(o.HaveOccurred())
defer func() {
// Don't cleanup test pods in error scenario.
if err != nil && !framework.TestContext.DeleteNamespaceOnFailure {
return
}
cleanupTestPods(config)
}()
if mode == v1.IPsecModeExternal {
err = pingAndCheckNodeTraffic(config.srcNodeConfig, config.dstNodeConfig, esp)
o.Expect(err).NotTo(o.HaveOccurred())
err = pingAndCheckNodeTraffic(config.srcNodeConfig, config.dstNodeConfig, icmp)
o.Expect(err).To(o.HaveOccurred())
err = nil
return
} else {
err = pingAndCheckNodeTraffic(config.srcNodeConfig, config.dstNodeConfig, icmp)
o.Expect(err).NotTo(o.HaveOccurred())
}
}

g.BeforeAll(func() {
// Set up the config object with existing IPsecConfig, setup testing config on
// the selected nodes.
Expand Down Expand Up @@ -617,8 +643,10 @@ var _ = g.Describe("[sig-network][Feature:IPsec]", g.Ordered, func() {

g.By("validate traffic before changing IPsec configuration")
checkPodTraffic(config.ipsecCfg)
// N/S ipsec config is not in effect yet, so node traffic behaves as it were disabled
// N/S ipsec config is not in effect yet, so node to node and pod to node traffic behave
// as it were disabled
checkNodeTraffic(v1.IPsecModeDisabled)
checkPodToNodeTraffic(v1.IPsecModeDisabled)

// TODO: remove this block when https://issues.redhat.com/browse/RHEL-67307 is fixed.
if config.ipsecCfg.mode == v1.IPsecModeFull {
Expand Down Expand Up @@ -653,6 +681,7 @@ var _ = g.Describe("[sig-network][Feature:IPsec]", g.Ordered, func() {
checkPodTraffic(&ipsecConfig{mode: v1.IPsecModeFull,
encap: v1.Encapsulation(v1.EncapsulationAuto)})
checkNodeTraffic(v1.IPsecModeExternal)
checkPodToNodeTraffic(v1.IPsecModeExternal)
})
})
})
Expand Down