Skip to content
New issue

Have a question about this project? Sign up for a free GitHub account to open an issue and contact its maintainers and the community.

Sign up for GitHub

By clicking “Sign up for GitHub”, you agree to our terms of service and privacy statement. We’ll occasionally send you account related emails.

Already on GitHub? Sign in to your account

Jump to bottom

Automated cherry pick of #5125: Fix incorrect FlowMod message passing in openflow client #5145

Merged
merged 1 commit into from
Jun 19, 2023
Merged

Automated cherry pick of #5125: Fix incorrect FlowMod message passing in openflow client #5145

Show file tree
Hide file tree
Changes from all commits
Commits
Show all changes
1 commit
Select commit
File filter

Filter by extension

Filter by extension
Conversations
Failed to load comments.
Loading
Jump to
Jump to file
Failed to load files.
Loading
Diff view
Diff view
4 changes: 2 additions & 2 deletions pkg/agent/openflow/client.go
View file
Open in desktop
Original file line number Diff line number Diff line change
Expand Up @@ -450,10 +450,10 @@ func (c *client) modifyFlows(cache *flowCategoryCache, flowCacheKey string, flow
var msg *openflow15.FlowMod
if _, ok := oldFlowCache[matchString]; ok {
msg = getFlowModMessage(flow, binding.ModifyMessage)
adds = append(adds, msg)
mods = append(mods, msg)
} else {
msg = getFlowModMessage(flow, binding.AddMessage)
mods = append(mods, msg)
adds = append(adds, msg)
}
fCache[matchString] = msg
}
Expand Down
97 changes: 97 additions & 0 deletions pkg/agent/openflow/client_test.go
View file
Open in desktop
Original file line number Diff line number Diff line change
Expand Up @@ -813,6 +813,103 @@ func Test_client_InstallPodFlows(t *testing.T) {
}
}

func Test_client_UpdatePodFlows(t *testing.T) {
podIPv4 := net.ParseIP("10.10.0.66")
podIPv4Updated := net.ParseIP("10.10.0.88")
podIPv6 := net.ParseIP("fec0:10:10::66")
podIPv6Updated := net.ParseIP("fec0:10:10::88")
podMAC, _ := net.ParseMAC("00:00:10:10:00:66")
podOfPort := uint32(100)
testCases := []struct {
name string
enableIPv4 bool
enableIPv6 bool
clientOptions []clientOptionsFn
podInterfaceIPs []net.IP
podUpdatedInterfaceIPs []net.IP
vlanID uint16
trafficEncapMode config.TrafficEncapModeType
expectedFlows []string
expectedNewFlows []string
}{
{
name: "IPv4",
enableIPv4: true,
podInterfaceIPs: []net.IP{podIPv4},
podUpdatedInterfaceIPs: []net.IP{podIPv4Updated},
expectedFlows: []string{
"cookie=0x1010000000000, table=ARPSpoofGuard, priority=200,arp,in_port=100,arp_spa=10.10.0.66,arp_sha=00:00:10:10:00:66 actions=goto_table:ARPResponder",
"cookie=0x1010000000000, table=Classifier, priority=190,in_port=100 actions=set_field:0x3/0xf->reg0,goto_table:SpoofGuard",
"cookie=0x1010000000000, table=SpoofGuard, priority=200,ip,in_port=100,dl_src=00:00:10:10:00:66,nw_src=10.10.0.66 actions=goto_table:UnSNAT",
"cookie=0x1010000000000, table=L3Forwarding, priority=200,ip,reg0=0x200/0x200,nw_dst=10.10.0.66 actions=set_field:0a:00:00:00:00:01->eth_src,set_field:00:00:10:10:00:66->eth_dst,goto_table:L3DecTTL",
"cookie=0x1010000000000, table=L2ForwardingCalc, priority=200,dl_dst=00:00:10:10:00:66 actions=set_field:0x64->reg1,set_field:0x100/0x100->reg0,goto_table:IngressSecurityClassifier",
},
expectedNewFlows: []string{
"cookie=0x1010000000000, table=ARPSpoofGuard, priority=200,arp,in_port=100,arp_spa=10.10.0.88,arp_sha=00:00:10:10:00:66 actions=goto_table:ARPResponder",
"cookie=0x1010000000000, table=Classifier, priority=190,in_port=100 actions=set_field:0x3/0xf->reg0,goto_table:SpoofGuard",
"cookie=0x1010000000000, table=SpoofGuard, priority=200,ip,in_port=100,dl_src=00:00:10:10:00:66,nw_src=10.10.0.88 actions=goto_table:UnSNAT",
"cookie=0x1010000000000, table=L3Forwarding, priority=200,ip,reg0=0x200/0x200,nw_dst=10.10.0.88 actions=set_field:0a:00:00:00:00:01->eth_src,set_field:00:00:10:10:00:66->eth_dst,goto_table:L3DecTTL",
"cookie=0x1010000000000, table=L2ForwardingCalc, priority=200,dl_dst=00:00:10:10:00:66 actions=set_field:0x64->reg1,set_field:0x100/0x100->reg0,goto_table:IngressSecurityClassifier",
},
},
{
name: "IPv6",
enableIPv6: true,
podInterfaceIPs: []net.IP{podIPv6},
podUpdatedInterfaceIPs: []net.IP{podIPv6Updated},
expectedFlows: []string{
"cookie=0x1010000000000, table=Classifier, priority=190,in_port=100 actions=set_field:0x3/0xf->reg0,goto_table:SpoofGuard",
"cookie=0x1010000000000, table=SpoofGuard, priority=200,ipv6,in_port=100,dl_src=00:00:10:10:00:66,ipv6_src=fec0:10:10::66 actions=goto_table:IPv6",
"cookie=0x1010000000000, table=L3Forwarding, priority=200,ipv6,reg0=0x200/0x200,ipv6_dst=fec0:10:10::66 actions=set_field:0a:00:00:00:00:01->eth_src,set_field:00:00:10:10:00:66->eth_dst,goto_table:L3DecTTL",
"cookie=0x1010000000000, table=L2ForwardingCalc, priority=200,dl_dst=00:00:10:10:00:66 actions=set_field:0x64->reg1,set_field:0x100/0x100->reg0,goto_table:IngressSecurityClassifier",
},
expectedNewFlows: []string{
"cookie=0x1010000000000, table=Classifier, priority=190,in_port=100 actions=set_field:0x3/0xf->reg0,goto_table:SpoofGuard",
"cookie=0x1010000000000, table=SpoofGuard, priority=200,ipv6,in_port=100,dl_src=00:00:10:10:00:66,ipv6_src=fec0:10:10::88 actions=goto_table:IPv6",
"cookie=0x1010000000000, table=L3Forwarding, priority=200,ipv6,reg0=0x200/0x200,ipv6_dst=fec0:10:10::88 actions=set_field:0a:00:00:00:00:01->eth_src,set_field:00:00:10:10:00:66->eth_dst,goto_table:L3DecTTL",
"cookie=0x1010000000000, table=L2ForwardingCalc, priority=200,dl_dst=00:00:10:10:00:66 actions=set_field:0x64->reg1,set_field:0x100/0x100->reg0,goto_table:IngressSecurityClassifier",
},
},
}
for _, tc := range testCases {
t.Run(tc.name, func(t *testing.T) {
ctrl := gomock.NewController(t)
m := oftest.NewMockOFEntryOperations(ctrl)

fc := newFakeClient(m, tc.enableIPv4, tc.enableIPv6, config.K8sNode, tc.trafficEncapMode, tc.clientOptions...)
defer resetPipelines()

m.EXPECT().AddAll(gomock.Any()).Return(nil).Times(1)
// When only the Pod IP is updated, the flow change in Classifier and L2ForwardingCalc table should just be mod
// messages since no flow matcher has changed. The other flows should be deleted and added as the latest ones.
// For IPV4 case there is one additional flow delete and add for the ARPSpoofGuard table.
numFlowDelAndAdds := 3
if tc.enableIPv6 {
numFlowDelAndAdds = 2
}
m.EXPECT().BundleOps(gomock.Len(numFlowDelAndAdds), gomock.Len(2), gomock.Len(numFlowDelAndAdds)).Return(nil).Times(1)
m.EXPECT().DeleteAll(gomock.Any()).Return(nil).Times(1)

interfaceName := "pod1"
assert.NoError(t, fc.InstallPodFlows(interfaceName, tc.podInterfaceIPs, podMAC, podOfPort, tc.vlanID, nil))
fCacheI, ok := fc.featurePodConnectivity.podCachedFlows.Load(interfaceName)
require.True(t, ok)
flows := getFlowStrings(fCacheI)
assert.ElementsMatch(t, tc.expectedFlows, flows)

assert.NoError(t, fc.InstallPodFlows(interfaceName, tc.podUpdatedInterfaceIPs, podMAC, podOfPort, tc.vlanID, nil))
fCacheI, ok = fc.featurePodConnectivity.podCachedFlows.Load(interfaceName)
require.True(t, ok)
flows = getFlowStrings(fCacheI)
assert.ElementsMatch(t, tc.expectedNewFlows, flows)

assert.NoError(t, fc.UninstallPodFlows(interfaceName))
_, ok = fc.featurePodConnectivity.podCachedFlows.Load(interfaceName)
require.False(t, ok)
})
}
}

func Test_client_GetPodFlowKeys(t *testing.T) {
ctrl := gomock.NewController(t)
m := oftest.NewMockOFEntryOperations(ctrl)
Expand Down