/
ovscontroller_test.go
1108 lines (1039 loc) · 37.7 KB
/
ovscontroller_test.go
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package node
import (
"fmt"
"reflect"
"sort"
"strings"
"testing"
osapi "github.com/openshift/origin/pkg/sdn/apis/network"
"github.com/openshift/origin/pkg/util/ovs"
metav1 "k8s.io/apimachinery/pkg/apis/meta/v1"
kapi "k8s.io/kubernetes/pkg/api"
)
func setup(t *testing.T) (ovs.Interface, *ovsController, []string) {
ovsif := ovs.NewFake(Br0)
oc := NewOVSController(ovsif, 0, true)
err := oc.SetupOVS("10.128.0.0/14", "172.30.0.0/16", "10.128.0.0/23", "10.128.0.1", "172.17.0.4")
if err != nil {
t.Fatalf("Unexpected error setting up OVS: %v", err)
}
origFlows, err := ovsif.DumpFlows()
if err != nil {
t.Fatalf("Unexpected error dumping flows: %v", err)
}
return ovsif, oc, origFlows
}
type flowChangeKind string
const (
flowAdded flowChangeKind = "added"
flowRemoved flowChangeKind = "removed"
)
type flowChange struct {
kind flowChangeKind
match []string
noMatch []string
}
// assertFlowChanges asserts that origFlows and newFlows differ in the ways described by
// changes, which consists of a series of flows that have been removed from origFlows or
// added to newFlows. There must be exactly 1 matching flow that contains all of the
// strings in match and none of the strings in noMatch.
func assertFlowChanges(origFlows, newFlows []string, changes ...flowChange) error {
// copy to avoid modifying originals
dup := make([]string, 0, len(origFlows))
origFlows = append(dup, origFlows...)
dup = make([]string, 0, len(newFlows))
newFlows = append(dup, newFlows...)
for _, change := range changes {
var modFlows *[]string
if change.kind == flowAdded {
modFlows = &newFlows
} else {
modFlows = &origFlows
}
matchIndex := -1
for i, flow := range *modFlows {
matches := true
for _, match := range change.match {
if !strings.Contains(flow, match) {
matches = false
break
}
}
for _, nonmatch := range change.noMatch {
if strings.Contains(flow, nonmatch) {
matches = false
break
}
}
if matches {
if matchIndex == -1 {
matchIndex = i
} else {
return fmt.Errorf("multiple %s flows matching %#v", string(change.kind), change.match)
}
}
}
if matchIndex == -1 {
return fmt.Errorf("no %s flow matching %#v", string(change.kind), change.match)
}
*modFlows = append((*modFlows)[:matchIndex], (*modFlows)[matchIndex+1:]...)
}
if !reflect.DeepEqual(origFlows, newFlows) {
return fmt.Errorf("unexpected additional changes to flows")
}
return nil
}
func TestOVSHostSubnet(t *testing.T) {
ovsif, oc, origFlows := setup(t)
hs := osapi.HostSubnet{
TypeMeta: metav1.TypeMeta{
Kind: "HostSubnet",
},
ObjectMeta: metav1.ObjectMeta{
Name: "node2",
},
Host: "node2",
HostIP: "192.168.1.2",
Subnet: "10.129.0.0/23",
}
err := oc.AddHostSubnetRules(&hs)
if err != nil {
t.Fatalf("Unexpected error adding HostSubnet rules: %v", err)
}
flows, err := ovsif.DumpFlows()
if err != nil {
t.Fatalf("Unexpected error dumping flows: %v", err)
}
err = assertFlowChanges(origFlows, flows,
flowChange{
kind: flowAdded,
match: []string{"table=10", "tun_src=192.168.1.2"},
},
flowChange{
kind: flowAdded,
match: []string{"table=50", "arp", "arp_tpa=10.129.0.0/23", "192.168.1.2->tun_dst"},
},
flowChange{
kind: flowAdded,
match: []string{"table=90", "ip", "nw_dst=10.129.0.0/23", "192.168.1.2->tun_dst"},
},
)
if err != nil {
t.Fatalf("Unexpected flow changes: %v\nOrig: %#v\nNew: %#v", err, origFlows, flows)
}
err = oc.DeleteHostSubnetRules(&hs)
if err != nil {
t.Fatalf("Unexpected error deleting HostSubnet rules: %v", err)
}
flows, err = ovsif.DumpFlows()
if err != nil {
t.Fatalf("Unexpected error dumping flows: %v", err)
}
err = assertFlowChanges(origFlows, flows) // no changes
if err != nil {
t.Fatalf("Unexpected flow changes: %v\nOrig: %#v\nNew: %#v", err, origFlows, flows)
}
}
func TestOVSService(t *testing.T) {
ovsif, oc, origFlows := setup(t)
svc := kapi.Service{
TypeMeta: metav1.TypeMeta{
Kind: "Service",
},
ObjectMeta: metav1.ObjectMeta{
Name: "service",
},
Spec: kapi.ServiceSpec{
ClusterIP: "172.30.99.99",
Ports: []kapi.ServicePort{
{Protocol: kapi.ProtocolTCP, Port: 80},
{Protocol: kapi.ProtocolTCP, Port: 443},
},
},
}
err := oc.AddServiceRules(&svc, 42)
if err != nil {
t.Fatalf("Unexpected error adding service rules: %v", err)
}
flows, err := ovsif.DumpFlows()
if err != nil {
t.Fatalf("Unexpected error dumping flows: %v", err)
}
err = assertFlowChanges(origFlows, flows,
flowChange{
kind: flowAdded,
match: []string{"table=60", "ip_frag", "42->NXM_NX_REG1"},
noMatch: []string{"tcp"},
},
flowChange{
kind: flowAdded,
match: []string{"table=60", "nw_dst=172.30.99.99", "tcp_dst=80", "42->NXM_NX_REG1"},
},
flowChange{
kind: flowAdded,
match: []string{"table=60", "nw_dst=172.30.99.99", "tcp_dst=443", "42->NXM_NX_REG1"},
},
)
if err != nil {
t.Fatalf("Unexpected flow changes: %v\nOrig: %#v\nNew: %#v", err, origFlows, flows)
}
err = oc.DeleteServiceRules(&svc)
if err != nil {
t.Fatalf("Unexpected error deleting service rules: %v", err)
}
flows, err = ovsif.DumpFlows()
if err != nil {
t.Fatalf("Unexpected error dumping flows: %v", err)
}
err = assertFlowChanges(origFlows, flows) // no changes
if err != nil {
t.Fatalf("Unexpected flow changes: %v\nOrig: %#v\nNew: %#v", err, origFlows, flows)
}
}
const (
sandboxID string = "bcb5d8d287fcf97458c48ad643b101079e3bc265a94e097e7407440716112f69"
sandboxNote string = "bc.b5.d8.d2.87.fc.f9.74.58.c4.8a.d6.43.b1.01.07.9e.3b.c2.65.a9.4e.09.7e.74.07.44.07.16.11.2f.69"
sandboxNoteAction string = "note:" + sandboxNote
)
func TestOVSPod(t *testing.T) {
ovsif, oc, origFlows := setup(t)
// Add
ofport, err := oc.SetUpPod("veth1", "10.128.0.2", "11:22:33:44:55:66", sandboxID, 42)
if err != nil {
t.Fatalf("Unexpected error adding pod rules: %v", err)
}
flows, err := ovsif.DumpFlows()
if err != nil {
t.Fatalf("Unexpected error dumping flows: %v", err)
}
err = assertFlowChanges(origFlows, flows,
flowChange{
kind: flowAdded,
match: []string{"table=20", fmt.Sprintf("in_port=%d", ofport), "arp", "10.128.0.2", "11:22:33:44:55:66", sandboxNoteAction},
},
flowChange{
kind: flowAdded,
match: []string{"table=20", fmt.Sprintf("in_port=%d", ofport), "ip", "10.128.0.2", "42->NXM_NX_REG0"},
},
flowChange{
kind: flowAdded,
match: []string{"table=25", "ip", "10.128.0.2", "42->NXM_NX_REG0"},
},
flowChange{
kind: flowAdded,
match: []string{"table=40", "arp", "10.128.0.2", fmt.Sprintf("output:%d", ofport)},
noMatch: []string{"reg0=42"},
},
flowChange{
kind: flowAdded,
match: []string{"table=70", "ip", "10.128.0.2", "42->NXM_NX_REG1", fmt.Sprintf("%d->NXM_NX_REG2", ofport)},
noMatch: []string{"reg0=42"},
},
)
if err != nil {
t.Fatalf("Unexpected flow changes: %v\nOrig: %#v\nNew: %#v", err, origFlows, flows)
}
// Update
err = oc.UpdatePod(sandboxID, 43)
if err != nil {
t.Fatalf("Unexpected error adding pod rules: %v", err)
}
flows, err = ovsif.DumpFlows()
if err != nil {
t.Fatalf("Unexpected error dumping flows: %v", err)
}
err = assertFlowChanges(origFlows, flows,
flowChange{
kind: flowAdded,
match: []string{"table=20", fmt.Sprintf("in_port=%d", ofport), "arp", "10.128.0.2", "11:22:33:44:55:66", sandboxNoteAction},
},
flowChange{
kind: flowAdded,
match: []string{"table=20", fmt.Sprintf("in_port=%d", ofport), "ip", "10.128.0.2", "43->NXM_NX_REG0"},
},
flowChange{
kind: flowAdded,
match: []string{"table=25", "ip", "10.128.0.2", "43->NXM_NX_REG0"},
},
flowChange{
kind: flowAdded,
match: []string{"table=40", "arp", "10.128.0.2", fmt.Sprintf("output:%d", ofport)},
noMatch: []string{"reg0=43"},
},
flowChange{
kind: flowAdded,
match: []string{"table=70", "ip", "10.128.0.2", "43->NXM_NX_REG1", fmt.Sprintf("%d->NXM_NX_REG2", ofport)},
noMatch: []string{"reg0=43"},
},
)
if err != nil {
t.Fatalf("Unexpected flow changes: %v\nOrig: %#v\nNew: %#v", err, origFlows, flows)
}
// Delete
err = oc.TearDownPod("veth1", "10.128.0.2", sandboxID)
if err != nil {
t.Fatalf("Unexpected error deleting pod rules: %v", err)
}
flows, err = ovsif.DumpFlows()
if err != nil {
t.Fatalf("Unexpected error dumping flows: %v", err)
}
err = assertFlowChanges(origFlows, flows) // no changes
if err != nil {
t.Fatalf("Unexpected flow changes: %v\nOrig: %#v\nNew: %#v", err, origFlows, flows)
}
}
func TestGetPodDetails(t *testing.T) {
type testcase struct {
sandboxID string
flows []string
ofport int
ip string
mac string
note string
errStr string
}
testcases := []testcase{
{
sandboxID: sandboxID,
flows: []string{
"cookie=0x0, duration=12.243s, table=0, n_packets=0, n_bytes=0, priority=250,ip,in_port=2,nw_dst=224.0.0.0/4 actions=drop",
"cookie=0x0, duration=12.258s, table=0, n_packets=0, n_bytes=0, priority=200,arp,in_port=1,arp_spa=10.128.0.0/14,arp_tpa=10.130.0.0/23 actions=move:NXM_NX_TUN_ID[0..31]->NXM_NX_REG0[],goto_table:10",
"cookie=0x0, duration=12.255s, table=0, n_packets=0, n_bytes=0, priority=200,ip,in_port=1,nw_src=10.128.0.0/14,nw_dst=10.130.0.0/23 actions=move:NXM_NX_TUN_ID[0..31]->NXM_NX_REG0[],goto_table:10",
"cookie=0x0, duration=12.252s, table=0, n_packets=0, n_bytes=0, priority=200,ip,in_port=1,nw_src=10.128.0.0/14,nw_dst=224.0.0.0/4 actions=move:NXM_NX_TUN_ID[0..31]->NXM_NX_REG0[],goto_table:10",
"cookie=0x0, duration=12.237s, table=0, n_packets=0, n_bytes=0, priority=200,arp,in_port=2,arp_spa=10.130.0.1,arp_tpa=10.128.0.0/14 actions=goto_table:30",
"cookie=0x0, duration=12.234s, table=0, n_packets=0, n_bytes=0, priority=200,ip,in_port=2 actions=goto_table:30",
"cookie=0x0, duration=12.248s, table=0, n_packets=0, n_bytes=0, priority=150,in_port=1 actions=drop",
"cookie=0x0, duration=12.230s, table=0, n_packets=7, n_bytes=586, priority=150,in_port=2 actions=drop",
"cookie=0x0, duration=12.222s, table=0, n_packets=0, n_bytes=0, priority=100,arp actions=goto_table:20",
"cookie=0x0, duration=12.218s, table=0, n_packets=0, n_bytes=0, priority=100,ip actions=goto_table:20",
"cookie=0x0, duration=12.215s, table=0, n_packets=5, n_bytes=426, priority=0 actions=drop",
"cookie=0x0, duration=12.063s, table=10, n_packets=0, n_bytes=0, priority=100,tun_src=172.17.0.3 actions=goto_table:30",
"cookie=0x0, duration=12.041s, table=10, n_packets=0, n_bytes=0, priority=100,tun_src=172.17.0.4 actions=goto_table:30",
"cookie=0x0, duration=12.211s, table=10, n_packets=0, n_bytes=0, priority=0 actions=drop",
"cookie=0x0, duration=3.202s, table=20, n_packets=0, n_bytes=0, priority=100,arp,in_port=3,arp_spa=10.130.0.2,arp_sha=4a:77:32:e4:ab:9d actions=load:0->NXM_NX_REG0[],note:bc.b5.d8.d2.87.fc.f9.74.58.c4.8a.d6.43.b1.01.07.9e.3b.c2.65.a9.4e.09.7e.74.07.44.07.16.11.2f.69.00.00.00.00.00.00,goto_table:21",
"cookie=0x0, duration=3.197s, table=20, n_packets=0, n_bytes=0, priority=100,ip,in_port=3,nw_src=10.130.0.2 actions=load:0->NXM_NX_REG0[],goto_table:21",
"cookie=0x0, duration=12.205s, table=20, n_packets=0, n_bytes=0, priority=0 actions=drop",
"cookie=0x0, duration=12.201s, table=21, n_packets=0, n_bytes=0, priority=0 actions=goto_table:30",
"cookie=0x0, duration=12.196s, table=30, n_packets=0, n_bytes=0, priority=300,arp,arp_tpa=10.130.0.1 actions=output:2",
"cookie=0x0, duration=12.182s, table=30, n_packets=0, n_bytes=0, priority=300,ip,nw_dst=10.130.0.1 actions=output:2",
"cookie=0x0, duration=12.190s, table=30, n_packets=0, n_bytes=0, priority=200,arp,arp_tpa=10.130.0.0/23 actions=goto_table:40",
"cookie=0x0, duration=12.173s, table=30, n_packets=0, n_bytes=0, priority=200,ip,nw_dst=10.130.0.0/23 actions=goto_table:70",
"cookie=0x0, duration=12.186s, table=30, n_packets=0, n_bytes=0, priority=100,arp,arp_tpa=10.128.0.0/14 actions=goto_table:50",
"cookie=0x0, duration=12.169s, table=30, n_packets=0, n_bytes=0, priority=100,ip,nw_dst=10.128.0.0/14 actions=goto_table:90",
"cookie=0x0, duration=12.178s, table=30, n_packets=0, n_bytes=0, priority=100,ip,nw_dst=172.30.0.0/16 actions=goto_table:60",
"cookie=0x0, duration=12.165s, table=30, n_packets=0, n_bytes=0, priority=50,ip,in_port=1,nw_dst=224.0.0.0/4 actions=goto_table:120",
"cookie=0x0, duration=12.160s, table=30, n_packets=0, n_bytes=0, priority=25,ip,nw_dst=224.0.0.0/4 actions=goto_table:110",
"cookie=0x0, duration=12.154s, table=30, n_packets=0, n_bytes=0, priority=0,ip actions=goto_table:100",
"cookie=0x0, duration=12.150s, table=30, n_packets=0, n_bytes=0, priority=0,arp actions=drop",
"cookie=0x0, duration=3.190s, table=40, n_packets=0, n_bytes=0, priority=100,arp,arp_tpa=10.130.0.2 actions=output:3",
"cookie=0x0, duration=12.147s, table=40, n_packets=0, n_bytes=0, priority=0 actions=drop",
"cookie=0x0, duration=12.058s, table=50, n_packets=0, n_bytes=0, priority=100,arp,arp_tpa=10.128.0.0/23 actions=move:NXM_NX_REG0[]->NXM_NX_TUN_ID[0..31],set_field:172.17.0.3->tun_dst,output:1",
"cookie=0x0, duration=12.037s, table=50, n_packets=0, n_bytes=0, priority=100,arp,arp_tpa=10.129.0.0/23 actions=move:NXM_NX_REG0[]->NXM_NX_TUN_ID[0..31],set_field:172.17.0.4->tun_dst,output:1",
"cookie=0x0, duration=12.143s, table=50, n_packets=0, n_bytes=0, priority=0 actions=drop",
"cookie=0x0, duration=12.139s, table=60, n_packets=0, n_bytes=0, priority=200,reg0=0 actions=output:2",
"cookie=0x0, duration=11.938s, table=60, n_packets=0, n_bytes=0, priority=100,ip,nw_dst=172.30.0.1,nw_frag=later actions=load:0->NXM_NX_REG1[],load:0x2->NXM_NX_REG2[],goto_table:80",
"cookie=0x0, duration=11.929s, table=60, n_packets=0, n_bytes=0, priority=100,tcp,nw_dst=172.30.0.1,tp_dst=443 actions=load:0->NXM_NX_REG1[],load:0x2->NXM_NX_REG2[],goto_table:80",
"cookie=0x0, duration=11.926s, table=60, n_packets=0, n_bytes=0, priority=100,udp,nw_dst=172.30.0.1,tp_dst=53 actions=load:0->NXM_NX_REG1[],load:0x2->NXM_NX_REG2[],goto_table:80",
"cookie=0x0, duration=11.922s, table=60, n_packets=0, n_bytes=0, priority=100,tcp,nw_dst=172.30.0.1,tp_dst=53 actions=load:0->NXM_NX_REG1[],load:0x2->NXM_NX_REG2[],goto_table:80",
"cookie=0x0, duration=12.136s, table=60, n_packets=0, n_bytes=0, priority=0 actions=drop",
"cookie=0x0, duration=3.179s, table=70, n_packets=0, n_bytes=0, priority=100,ip,nw_dst=10.130.0.2 actions=load:0->NXM_NX_REG1[],load:0x3->NXM_NX_REG2[],goto_table:80",
"cookie=0x0, duration=12.133s, table=70, n_packets=0, n_bytes=0, priority=0 actions=drop",
"cookie=0x0, duration=12.129s, table=80, n_packets=0, n_bytes=0, priority=300,ip,nw_src=10.130.0.1 actions=output:NXM_NX_REG2[]",
"cookie=0x0, duration=12.062s, table=80, n_packets=0, n_bytes=0, priority=200,reg0=0 actions=output:NXM_NX_REG2[]",
"cookie=0x0, duration=12.055s, table=80, n_packets=0, n_bytes=0, priority=200,reg1=0 actions=output:NXM_NX_REG2[]",
"cookie=0x0, duration=12.124s, table=80, n_packets=0, n_bytes=0, priority=0 actions=drop",
"cookie=0x0, duration=12.053s, table=90, n_packets=0, n_bytes=0, priority=100,ip,nw_dst=10.128.0.0/23 actions=move:NXM_NX_REG0[]->NXM_NX_TUN_ID[0..31],set_field:172.17.0.3->tun_dst,output:1",
"cookie=0x0, duration=12.030s, table=90, n_packets=0, n_bytes=0, priority=100,ip,nw_dst=10.129.0.0/23 actions=move:NXM_NX_REG0[]->NXM_NX_TUN_ID[0..31],set_field:172.17.0.4->tun_dst,output:1",
"cookie=0x0, duration=12.120s, table=90, n_packets=0, n_bytes=0, priority=0 actions=drop",
"cookie=0x0, duration=12.116s, table=100, n_packets=0, n_bytes=0, priority=0 actions=output:2",
"cookie=0x0, duration=12.112s, table=110, n_packets=0, n_bytes=0, priority=0 actions=drop",
"cookie=0x0, duration=12.024s, table=111, n_packets=0, n_bytes=0, priority=100 actions=move:NXM_NX_REG0[]->NXM_NX_TUN_ID[0..31],set_field:172.17.0.3->tun_dst,output:1,set_field:172.17.0.4->tun_dst,output:1,goto_table:120",
"cookie=0x0, duration=12.105s, table=120, n_packets=0, n_bytes=0, priority=0 actions=drop",
"cookie=0x0, duration=12.101s, table=253, n_packets=0, n_bytes=0, actions=note:01.03.00.00.00.00",
},
ofport: 3,
ip: "10.130.0.2",
mac: "4a:77:32:e4:ab:9d",
note: sandboxNote,
},
}
for _, tc := range testcases {
ofport, ip, mac, note, err := getPodDetailsBySandboxID(tc.flows, tc.sandboxID)
if err != nil {
if tc.errStr != "" {
if !strings.Contains(err.Error(), tc.errStr) {
t.Fatalf("unexpected error %v (expected %q)", err, tc.errStr)
}
} else {
t.Fatalf("unexpected failure %v", err)
}
} else if tc.errStr != "" {
t.Fatalf("expected error %q", tc.errStr)
}
if ofport != tc.ofport {
t.Fatalf("unexpected ofport %d (expected %d)", ofport, tc.ofport)
}
if ip != tc.ip {
t.Fatalf("unexpected ip %q (expected %q)", ip, tc.ip)
}
if mac != tc.mac {
t.Fatalf("unexpected mac %q (expected %q)", mac, tc.mac)
}
if note != tc.note {
t.Fatalf("unexpected note %q (expected %q)", note, tc.note)
}
}
}
func TestOVSMulticast(t *testing.T) {
ovsif, oc, origFlows := setup(t)
// local flows
err := oc.UpdateLocalMulticastFlows(99, true, []int{4, 5, 6})
if err != nil {
t.Fatalf("Unexpected error adding multicast flows: %v", err)
}
flows, err := ovsif.DumpFlows()
if err != nil {
t.Fatalf("Unexpected error dumping flows: %v", err)
}
err = assertFlowChanges(origFlows, flows,
flowChange{
kind: flowAdded,
match: []string{"table=110", "reg0=99", "goto_table:111"},
},
flowChange{
kind: flowAdded,
match: []string{"table=120", "reg0=99", "output:4,output:5,output:6"},
},
)
if err != nil {
t.Fatalf("Unexpected flow changes: %v\nOrig: %#v\nNew: %#v", err, origFlows, flows)
}
err = oc.UpdateLocalMulticastFlows(88, false, []int{7, 8})
if err != nil {
t.Fatalf("Unexpected error adding multicast flows: %v", err)
}
lastFlows := flows
flows, err = ovsif.DumpFlows()
if err != nil {
t.Fatalf("Unexpected error dumping flows: %v", err)
}
err = assertFlowChanges(lastFlows, flows) // no changes
if err != nil {
t.Fatalf("Unexpected flow changes: %v\nOrig: %#v\nNew: %#v", err, origFlows, flows)
}
err = oc.UpdateLocalMulticastFlows(99, false, []int{4, 5})
if err != nil {
t.Fatalf("Unexpected error adding multicast flows: %v", err)
}
flows, err = ovsif.DumpFlows()
if err != nil {
t.Fatalf("Unexpected error dumping flows: %v", err)
}
err = assertFlowChanges(origFlows, flows) // no changes
if err != nil {
t.Fatalf("Unexpected flow changes: %v\nOrig: %#v\nNew: %#v", err, origFlows, flows)
}
// VXLAN
err = oc.UpdateVXLANMulticastFlows([]string{"192.168.1.2", "192.168.1.5", "192.168.1.3"})
if err != nil {
t.Fatalf("Unexpected error adding multicast flows: %v", err)
}
flows, err = ovsif.DumpFlows()
if err != nil {
t.Fatalf("Unexpected error dumping flows: %v", err)
}
err = assertFlowChanges(origFlows, flows,
flowChange{
kind: flowRemoved,
match: []string{"table=111", "goto_table:120"},
noMatch: []string{"->tun_dst"},
},
flowChange{
kind: flowAdded,
match: []string{"table=111", "192.168.1.2->tun_dst", "192.168.1.3->tun_dst", "192.168.1.5->tun_dst"},
},
)
if err != nil {
t.Fatalf("Unexpected flow changes: %v\nOrig: %#v\nNew: %#v", err, origFlows, flows)
}
err = oc.UpdateVXLANMulticastFlows([]string{"192.168.1.5", "192.168.1.3"})
if err != nil {
t.Fatalf("Unexpected error adding multicast flows: %v", err)
}
flows, err = ovsif.DumpFlows()
if err != nil {
t.Fatalf("Unexpected error dumping flows: %v", err)
}
err = assertFlowChanges(origFlows, flows,
flowChange{
kind: flowRemoved,
match: []string{"table=111", "goto_table:120"},
noMatch: []string{"->tun_dst"},
},
flowChange{
kind: flowAdded,
match: []string{"table=111", "192.168.1.3->tun_dst", "192.168.1.5->tun_dst"},
noMatch: []string{"192.168.1.2"},
},
)
if err != nil {
t.Fatalf("Unexpected flow changes: %v\nOrig: %#v\nNew: %#v", err, origFlows, flows)
}
err = oc.UpdateVXLANMulticastFlows([]string{})
if err != nil {
t.Fatalf("Unexpected error adding multicast flows: %v", err)
}
flows, err = ovsif.DumpFlows()
if err != nil {
t.Fatalf("Unexpected error dumping flows: %v", err)
}
err = assertFlowChanges(origFlows, flows) // no changes
if err != nil {
t.Fatalf("Unexpected flow changes: %v\nOrig: %#v\nNew: %#v", err, origFlows, flows)
}
}
var enp1 = osapi.EgressNetworkPolicy{
TypeMeta: metav1.TypeMeta{
Kind: "EgressNetworkPolicy",
},
ObjectMeta: metav1.ObjectMeta{
Name: "enp1",
},
Spec: osapi.EgressNetworkPolicySpec{
Egress: []osapi.EgressNetworkPolicyRule{
{
Type: osapi.EgressNetworkPolicyRuleAllow,
To: osapi.EgressNetworkPolicyPeer{
CIDRSelector: "192.168.0.0/16",
},
},
{
Type: osapi.EgressNetworkPolicyRuleDeny,
To: osapi.EgressNetworkPolicyPeer{
CIDRSelector: "192.168.1.0/24",
},
},
{
Type: osapi.EgressNetworkPolicyRuleAllow,
To: osapi.EgressNetworkPolicyPeer{
CIDRSelector: "192.168.1.1/32",
},
},
},
},
}
var enp2 = osapi.EgressNetworkPolicy{
TypeMeta: metav1.TypeMeta{
Kind: "EgressNetworkPolicy",
},
ObjectMeta: metav1.ObjectMeta{
Name: "enp2",
},
Spec: osapi.EgressNetworkPolicySpec{
Egress: []osapi.EgressNetworkPolicyRule{
{
Type: osapi.EgressNetworkPolicyRuleAllow,
To: osapi.EgressNetworkPolicyPeer{
CIDRSelector: "192.168.1.0/24",
},
},
{
Type: osapi.EgressNetworkPolicyRuleAllow,
To: osapi.EgressNetworkPolicyPeer{
CIDRSelector: "192.168.2.0/24",
},
},
{
Type: osapi.EgressNetworkPolicyRuleDeny,
To: osapi.EgressNetworkPolicyPeer{
// "/32" is wrong but accepted for backward-compatibility
CIDRSelector: "0.0.0.0/32",
},
},
},
},
}
var enpDenyAll = osapi.EgressNetworkPolicy{
TypeMeta: metav1.TypeMeta{
Kind: "EgressNetworkPolicy",
},
ObjectMeta: metav1.ObjectMeta{
Name: "enpDenyAll",
},
Spec: osapi.EgressNetworkPolicySpec{
Egress: []osapi.EgressNetworkPolicyRule{
{
Type: osapi.EgressNetworkPolicyRuleDeny,
To: osapi.EgressNetworkPolicyPeer{
CIDRSelector: "0.0.0.0/0",
},
},
},
},
}
type enpFlowAddition struct {
policy *osapi.EgressNetworkPolicy
vnid int
}
func assertENPFlowAdditions(origFlows, newFlows []string, additions ...enpFlowAddition) error {
changes := make([]flowChange, 0)
for _, addition := range additions {
for i, rule := range addition.policy.Spec.Egress {
var change flowChange
change.kind = flowAdded
change.match = []string{
"table=100",
fmt.Sprintf("reg0=%d", addition.vnid),
fmt.Sprintf("priority=%d", len(addition.policy.Spec.Egress)-i),
}
if rule.To.CIDRSelector == "0.0.0.0/0" || rule.To.CIDRSelector == "0.0.0.0/32" {
change.noMatch = []string{"nw_dst"}
} else {
change.match = append(change.match, fmt.Sprintf("nw_dst=%s", rule.To.CIDRSelector))
}
if rule.Type == osapi.EgressNetworkPolicyRuleAllow {
change.match = append(change.match, "actions=output")
} else {
change.match = append(change.match, "actions=drop")
}
changes = append(changes, change)
}
}
return assertFlowChanges(origFlows, newFlows, changes...)
}
func TestOVSEgressNetworkPolicy(t *testing.T) {
ovsif, oc, origFlows := setup(t)
// SUCCESSFUL CASES
// Set one EgressNetworkPolicy on VNID 42
err := oc.UpdateEgressNetworkPolicyRules(
[]osapi.EgressNetworkPolicy{enp1},
42,
[]string{"ns1"},
nil,
)
if err != nil {
t.Fatalf("Unexpected error updating egress network policy: %v", err)
}
flows, err := ovsif.DumpFlows()
if err != nil {
t.Fatalf("Unexpected error dumping flows: %v", err)
}
err = assertENPFlowAdditions(origFlows, flows,
enpFlowAddition{
vnid: 42,
policy: &enp1,
},
)
if err != nil {
t.Fatalf("Unexpected flow changes: %v\nOrig: %#v\nNew: %#v", err, origFlows, flows)
}
// Set one EgressNetworkPolicy on VNID 43
err = oc.UpdateEgressNetworkPolicyRules(
[]osapi.EgressNetworkPolicy{enp2},
43,
[]string{"ns2"},
nil,
)
if err != nil {
t.Fatalf("Unexpected error updating egress network policy: %v", err)
}
flows, err = ovsif.DumpFlows()
if err != nil {
t.Fatalf("Unexpected error dumping flows: %v", err)
}
err = assertENPFlowAdditions(origFlows, flows,
enpFlowAddition{
vnid: 42,
policy: &enp1,
},
enpFlowAddition{
vnid: 43,
policy: &enp2,
},
)
if err != nil {
t.Fatalf("Unexpected flow changes: %v\nOrig: %#v\nNew: %#v", err, origFlows, flows)
}
// Change VNID 42 from ENP1 to ENP2
err = oc.UpdateEgressNetworkPolicyRules(
[]osapi.EgressNetworkPolicy{enp2},
42,
[]string{"ns1"},
nil,
)
if err != nil {
t.Fatalf("Unexpected error updating egress network policy: %v", err)
}
flows, err = ovsif.DumpFlows()
if err != nil {
t.Fatalf("Unexpected error dumping flows: %v", err)
}
err = assertENPFlowAdditions(origFlows, flows,
enpFlowAddition{
vnid: 42,
policy: &enp2,
},
enpFlowAddition{
vnid: 43,
policy: &enp2,
},
)
if err != nil {
t.Fatalf("Unexpected flow changes: %v\nOrig: %#v\nNew: %#v", err, origFlows, flows)
}
// Drop EgressNetworkPolicy from VNID 43
err = oc.UpdateEgressNetworkPolicyRules(
[]osapi.EgressNetworkPolicy{},
43,
[]string{"ns2"},
nil,
)
if err != nil {
t.Fatalf("Unexpected error updating egress network policy: %v", err)
}
flows, err = ovsif.DumpFlows()
if err != nil {
t.Fatalf("Unexpected error dumping flows: %v", err)
}
err = assertENPFlowAdditions(origFlows, flows,
enpFlowAddition{
vnid: 42,
policy: &enp2,
},
)
if err != nil {
t.Fatalf("Unexpected flow changes: %v\nOrig: %#v\nNew: %#v", err, origFlows, flows)
}
// Set no EgressNetworkPolicy on VNID 0
err = oc.UpdateEgressNetworkPolicyRules(
[]osapi.EgressNetworkPolicy{},
0,
[]string{"default", "my-global-project"},
nil,
)
if err != nil {
t.Fatalf("Unexpected error updating egress network policy: %v", err)
}
flows, err = ovsif.DumpFlows()
if err != nil {
t.Fatalf("Unexpected error dumping flows: %v", err)
}
err = assertENPFlowAdditions(origFlows, flows,
enpFlowAddition{
vnid: 42,
policy: &enp2,
},
)
if err != nil {
t.Fatalf("Unexpected flow changes: %v\nOrig: %#v\nNew: %#v", err, origFlows, flows)
}
// Set no EgressNetworkPolicy on a shared namespace
err = oc.UpdateEgressNetworkPolicyRules(
[]osapi.EgressNetworkPolicy{},
44,
[]string{"ns3", "ns4"},
nil,
)
if err != nil {
t.Fatalf("Unexpected error updating egress network policy: %v", err)
}
flows, err = ovsif.DumpFlows()
if err != nil {
t.Fatalf("Unexpected error dumping flows: %v", err)
}
err = assertENPFlowAdditions(origFlows, flows,
enpFlowAddition{
vnid: 42,
policy: &enp2,
},
)
if err != nil {
t.Fatalf("Unexpected flow changes: %v\nOrig: %#v\nNew: %#v", err, origFlows, flows)
}
// ERROR CASES
// Can't set non-empty ENP in default namespace
err = oc.UpdateEgressNetworkPolicyRules(
[]osapi.EgressNetworkPolicy{enp1},
0,
[]string{"default"},
nil,
)
if err == nil {
t.Fatalf("Unexpected lack of error updating egress network policy")
}
flows, err = ovsif.DumpFlows()
if err != nil {
t.Fatalf("Unexpected error dumping flows: %v", err)
}
err = assertENPFlowAdditions(origFlows, flows,
enpFlowAddition{
vnid: 42,
policy: &enp2,
},
)
if err != nil {
t.Fatalf("Unexpected flow changes: %v\nOrig: %#v\nNew: %#v", err, origFlows, flows)
}
// Can't set non-empty ENP in a shared namespace
err = oc.UpdateEgressNetworkPolicyRules(
[]osapi.EgressNetworkPolicy{enp1},
45,
[]string{"ns3", "ns4"},
nil,
)
if err == nil {
t.Fatalf("Unexpected lack of error updating egress network policy")
}
flows, err = ovsif.DumpFlows()
if err != nil {
t.Fatalf("Unexpected error dumping flows: %v", err)
}
err = assertENPFlowAdditions(origFlows, flows,
enpFlowAddition{
vnid: 42,
policy: &enp2,
},
enpFlowAddition{
vnid: 45,
policy: &enpDenyAll,
},
)
if err != nil {
t.Fatalf("Unexpected flow changes: %v\nOrig: %#v\nNew: %#v", err, origFlows, flows)
}
// Can't set multiple policies
err = oc.UpdateEgressNetworkPolicyRules(
[]osapi.EgressNetworkPolicy{enp1, enp2},
46,
[]string{"ns5"},
nil,
)
if err == nil {
t.Fatalf("Unexpected lack of error updating egress network policy")
}
flows, err = ovsif.DumpFlows()
if err != nil {
t.Fatalf("Unexpected error dumping flows: %v", err)
}
err = assertENPFlowAdditions(origFlows, flows,
enpFlowAddition{
vnid: 42,
policy: &enp2,
},
enpFlowAddition{
vnid: 45,
policy: &enpDenyAll,
},
enpFlowAddition{
vnid: 46,
policy: &enpDenyAll,
},
)
if err != nil {
t.Fatalf("Unexpected flow changes: %v\nOrig: %#v\nNew: %#v", err, origFlows, flows)
}
// CLEARING ERRORS
err = oc.UpdateEgressNetworkPolicyRules(
[]osapi.EgressNetworkPolicy{},
45,
[]string{"ns3", "ns4"},
nil,
)
if err != nil {
t.Fatalf("Unexpected error updating egress network policy: %v", err)
}
flows, err = ovsif.DumpFlows()
if err != nil {
t.Fatalf("Unexpected error dumping flows: %v", err)
}
err = assertENPFlowAdditions(origFlows, flows,
enpFlowAddition{
vnid: 42,
policy: &enp2,
},
enpFlowAddition{
vnid: 46,
policy: &enpDenyAll,
},
)
if err != nil {
t.Fatalf("Unexpected flow changes: %v\nOrig: %#v\nNew: %#v", err, origFlows, flows)
}
err = oc.UpdateEgressNetworkPolicyRules(
[]osapi.EgressNetworkPolicy{},
46,
[]string{"ns5"},
nil,
)
if err != nil {
t.Fatalf("Unexpected error updating egress network policy: %v", err)
}
flows, err = ovsif.DumpFlows()
if err != nil {
t.Fatalf("Unexpected error dumping flows: %v", err)
}
err = assertENPFlowAdditions(origFlows, flows,
enpFlowAddition{
vnid: 42,
policy: &enp2,
},
)
if err != nil {
t.Fatalf("Unexpected flow changes: %v\nOrig: %#v\nNew: %#v", err, origFlows, flows)
}
}
func TestAlreadySetUp(t *testing.T) {
testcases := []struct {
flow string
note string
success bool
}{
{
// Good note
flow: "cookie=0x0, duration=4.796s, table=253, n_packets=0, n_bytes=0, actions=note:00.04.00.00.00.00",
note: "00.04",
success: true,
},
{
// Wrong table
flow: "cookie=0x0, duration=4.796s, table=10, n_packets=0, n_bytes=0, actions=note:00.04.00.00.00.00",
note: "00.04",
success: false,
},
{
// No note
flow: "cookie=0x0, duration=4.796s, table=253, n_packets=0, n_bytes=0, actions=goto_table:50",
note: "00.04",
success: false,
},
}
for i, tc := range testcases {
ovsif := ovs.NewFake(Br0)
if err := ovsif.AddBridge("fail-mode=secure", "protocols=OpenFlow13"); err != nil {
t.Fatalf("(%d) unexpected error from AddBridge: %v", i, err)
}
oc := NewOVSController(ovsif, 0, true)
otx := ovsif.NewTransaction()
otx.AddFlow(tc.flow)
if err := otx.EndTransaction(); err != nil {
t.Fatalf("(%d) unexpected error from AddFlow: %v", i, err)
}
if success := oc.AlreadySetUp(); success != tc.success {
t.Fatalf("(%d) unexpected setup value %v (expected %v)", i, success, tc.success)
}
}
}
func TestSyncVNIDRules(t *testing.T) {
testcases := []struct {
flows []string
unused []int
}{
{
/* Both VNIDs have 1 pod and 1 service, so they stay */
flows: []string{