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fix: Clean up interfaceLockMap entries on endpoint deletion #1249

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fix: Clean up interfaceLockMap entries on endpoint deletion #1249

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08ec2d8
fix: ensure jq is installed and add coverage generation in GitHub Act…
byte-msft Jan 17, 2025
0fb0297
fix: debug the GitHub actions
byte-msft Jan 17, 2025
280a6cb
fix: Turn on --output flag on Docker build for test actions
byte-msft Jan 17, 2025
50c2a15
fix: Clean up interfaceLockMap entries on endpoint deletion
byte-msft Jan 21, 2025
5912634
Merge remote-tracking branch 'origin/main' into fix/issues/1236
byte-msft Jan 21, 2025
6b11dd5
fix: Remove obsolete Mutex creation in EndpointWatcher in PacketParse…
byte-msft Jan 21, 2025
1a1187a
fix: PacketParser Test linter processed
byte-msft Jan 21, 2025
3e78e6b
fix: Get rid of interfaceLockMap mutex from Packet Parser
byte-msft Jan 21, 2025
a4d7e14
Merge branch 'main' into fix/issues/1236
byte-msft Jan 21, 2025
31aa74c
fix: Revert getting rid of interfaceLockMap
byte-msft Jan 22, 2025
fdab1aa
fix: Add default case into endpointWatcherCallbackFn
byte-msft Jan 22, 2025
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9 changes: 1 addition & 8 deletions pkg/plugin/packetparser/packetparser_linux.go
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Original file line number Diff line number Diff line change
Expand Up @@ -225,7 +225,6 @@ func (p *packetParser) Init() error {
}

p.tcMap = &sync.Map{}
p.interfaceLockMap = &sync.Map{}

return nil
}
Expand Down Expand Up @@ -380,24 +379,18 @@ func (p *packetParser) endpointWatcherCallbackFn(obj interface{}) {
}

iface := event.Obj.(netlink.LinkAttrs)

ifaceKey := ifaceToKey(iface)
lockMapVal, _ := p.interfaceLockMap.LoadOrStore(ifaceKey, &sync.Mutex{})
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mu := lockMapVal.(*sync.Mutex)
mu.Lock()
defer mu.Unlock()

switch event.Type {
case endpoint.EndpointCreated:
p.l.Debug("Endpoint created", zap.String("name", iface.Name))
p.createQdiscAndAttach(iface, Veth)
case endpoint.EndpointDeleted:
p.l.Debug("Endpoint deleted", zap.String("name", iface.Name))
// Clean.
// Clean tcMap.
if value, ok := p.tcMap.Load(ifaceKey); ok {
v := value.(*tcValue)
p.clean(v.tc, v.qdisc)
// Delete from map.
p.tcMap.Delete(ifaceKey)
}
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We need to delete the ifacekey from interfaceLockMap if it's deleted.

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Reverted my latest changes, so I brought back the interfaceLockMap and removing the ifacekey from the map

default:
Expand Down
17 changes: 11 additions & 6 deletions pkg/plugin/packetparser/packetparser_linux_test.go
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Original file line number Diff line number Diff line change
Expand Up @@ -162,18 +162,22 @@ func TestEndpointWatcherCallbackFn_EndpointDeleted(t *testing.T) {
ctrl := gomock.NewController(t)
defer ctrl.Finish()

// Initialize packetParser with both maps.
p := &packetParser{
cfg: cfgPodLevelEnabled,
l: log.Logger().Named("test"),
interfaceLockMap: &sync.Map{},
tcMap: &sync.Map{},
}
p.tcMap = &sync.Map{}

// Create test interface attributes.
linkAttr := netlink.LinkAttrs{
Name: "test",
HardwareAddr: []byte("test"),
NetNsID: 1,
}
key := ifaceToKey(linkAttr)

// Pre-populate the map to simulate existing interface
p.tcMap.Store(key, &tcValue{nil, &tc.Object{}})

// Create EndpointDeleted event.
Expand All @@ -182,10 +186,14 @@ func TestEndpointWatcherCallbackFn_EndpointDeleted(t *testing.T) {
Obj: linkAttr,
}

// Execute the callback.
p.endpointWatcherCallbackFn(e)

// Verify both maps are cleaned up.
_, ok := p.tcMap.Load(key)
assert.False(t, ok)

// Assert both maps are cleaned up
assert.False(t, ok, "tcMap entry should be deleted")
}

func TestCreateQdiscAndAttach(t *testing.T) {
Expand Down Expand Up @@ -227,7 +235,6 @@ func TestCreateQdiscAndAttach(t *testing.T) {
cfg: cfgPodLevelEnabled,
l: log.Logger().Named("test"),
objs: pObj,
interfaceLockMap: &sync.Map{},
endpointIngressInfo: &ebpf.ProgramInfo{
Name: "ingress",
},
Expand Down Expand Up @@ -417,7 +424,6 @@ func TestStartWithDataAggregationLevelLow(t *testing.T) {
objs: pObj,
reader: mockReader,
recordsChannel: make(chan perf.Record, buffer),
interfaceLockMap: &sync.Map{},
endpointIngressInfo: &ebpf.ProgramInfo{
Name: "ingress",
},
Expand Down Expand Up @@ -496,7 +502,6 @@ func TestStartWithDataAggregationLevelHigh(t *testing.T) {
objs: pObj,
reader: mockReader,
recordsChannel: make(chan perf.Record, buffer),
interfaceLockMap: &sync.Map{},
endpointIngressInfo: &ebpf.ProgramInfo{
Name: "ingress",
},
Expand Down
2 changes: 0 additions & 2 deletions pkg/plugin/packetparser/types_linux.go
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Original file line number Diff line number Diff line change
Expand Up @@ -114,8 +114,6 @@ type packetParser struct {
tcMap *sync.Map
reader perfReader
enricher enricher.EnricherInterface
// interfaceLockMap is a map of key to *sync.Mutex.
interfaceLockMap *sync.Map
endpointIngressInfo *ebpf.ProgramInfo
endpointEgressInfo *ebpf.ProgramInfo
hostIngressInfo *ebpf.ProgramInfo
Expand Down
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