Merge pull request #110957 from papagalu/kp_remove_hnsv1

kube-proxy: windows: Removed hnsV1
This commit is contained in:
Kubernetes Prow Robot 2022-07-20 04:02:38 -07:00 committed by GitHub
commit 7d72ccf9a8
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4 changed files with 57 additions and 408 deletions

View File

@ -29,14 +29,27 @@ import (
"strings"
)
type hnsV2 struct{}
type HostNetworkService interface {
getNetworkByName(name string) (*hnsNetworkInfo, error)
getAllEndpointsByNetwork(networkName string) (map[string]*endpointsInfo, error)
getEndpointByID(id string) (*endpointsInfo, error)
getEndpointByIpAddress(ip string, networkName string) (*endpointsInfo, error)
getEndpointByName(id string) (*endpointsInfo, error)
createEndpoint(ep *endpointsInfo, networkName string) (*endpointsInfo, error)
deleteEndpoint(hnsID string) error
getLoadBalancer(endpoints []endpointsInfo, flags loadBalancerFlags, sourceVip string, vip string, protocol uint16, internalPort uint16, externalPort uint16, previousLoadBalancers map[loadBalancerIdentifier]*loadBalancerInfo) (*loadBalancerInfo, error)
getAllLoadBalancers() (map[loadBalancerIdentifier]*loadBalancerInfo, error)
deleteLoadBalancer(hnsID string) error
}
type hns struct{}
var (
// LoadBalancerFlagsIPv6 enables IPV6.
LoadBalancerFlagsIPv6 hcn.LoadBalancerFlags = 2
)
func (hns hnsV2) getNetworkByName(name string) (*hnsNetworkInfo, error) {
func (hns hns) getNetworkByName(name string) (*hnsNetworkInfo, error) {
hnsnetwork, err := hcn.GetNetworkByName(name)
if err != nil {
klog.ErrorS(err, "Error getting network by name")
@ -69,7 +82,7 @@ func (hns hnsV2) getNetworkByName(name string) (*hnsNetworkInfo, error) {
}, nil
}
func (hns hnsV2) getAllEndpointsByNetwork(networkName string) (map[string]*(endpointsInfo), error) {
func (hns hns) getAllEndpointsByNetwork(networkName string) (map[string]*(endpointsInfo), error) {
hcnnetwork, err := hcn.GetNetworkByName(networkName)
if err != nil {
klog.ErrorS(err, "failed to get HNS network by name", "name", networkName)
@ -101,7 +114,7 @@ func (hns hnsV2) getAllEndpointsByNetwork(networkName string) (map[string]*(endp
return endpointInfos, nil
}
func (hns hnsV2) getEndpointByID(id string) (*endpointsInfo, error) {
func (hns hns) getEndpointByID(id string) (*endpointsInfo, error) {
hnsendpoint, err := hcn.GetEndpointByID(id)
if err != nil {
return nil, err
@ -114,7 +127,7 @@ func (hns hnsV2) getEndpointByID(id string) (*endpointsInfo, error) {
hns: hns,
}, nil
}
func (hns hnsV2) getEndpointByIpAddress(ip string, networkName string) (*endpointsInfo, error) {
func (hns hns) getEndpointByIpAddress(ip string, networkName string) (*endpointsInfo, error) {
hnsnetwork, err := hcn.GetNetworkByName(networkName)
if err != nil {
klog.ErrorS(err, "Error getting network by name")
@ -146,7 +159,7 @@ func (hns hnsV2) getEndpointByIpAddress(ip string, networkName string) (*endpoin
}
return nil, fmt.Errorf("Endpoint %v not found on network %s", ip, networkName)
}
func (hns hnsV2) getEndpointByName(name string) (*endpointsInfo, error) {
func (hns hns) getEndpointByName(name string) (*endpointsInfo, error) {
hnsendpoint, err := hcn.GetEndpointByName(name)
if err != nil {
return nil, err
@ -159,7 +172,7 @@ func (hns hnsV2) getEndpointByName(name string) (*endpointsInfo, error) {
hns: hns,
}, nil
}
func (hns hnsV2) createEndpoint(ep *endpointsInfo, networkName string) (*endpointsInfo, error) {
func (hns hns) createEndpoint(ep *endpointsInfo, networkName string) (*endpointsInfo, error) {
hnsNetwork, err := hcn.GetNetworkByName(networkName)
if err != nil {
return nil, err
@ -216,7 +229,7 @@ func (hns hnsV2) createEndpoint(ep *endpointsInfo, networkName string) (*endpoin
hns: hns,
}, nil
}
func (hns hnsV2) deleteEndpoint(hnsID string) error {
func (hns hns) deleteEndpoint(hnsID string) error {
hnsendpoint, err := hcn.GetEndpointByID(hnsID)
if err != nil {
return err
@ -228,7 +241,7 @@ func (hns hnsV2) deleteEndpoint(hnsID string) error {
return err
}
func (hns hnsV2) getAllLoadBalancers() (map[loadBalancerIdentifier]*loadBalancerInfo, error) {
func (hns hns) getAllLoadBalancers() (map[loadBalancerIdentifier]*loadBalancerInfo, error) {
lbs, err := hcn.ListLoadBalancers()
var id loadBalancerIdentifier
if err != nil {
@ -251,7 +264,7 @@ func (hns hnsV2) getAllLoadBalancers() (map[loadBalancerIdentifier]*loadBalancer
return loadBalancers, nil
}
func (hns hnsV2) getLoadBalancer(endpoints []endpointsInfo, flags loadBalancerFlags, sourceVip string, vip string, protocol uint16, internalPort uint16, externalPort uint16, previousLoadBalancers map[loadBalancerIdentifier]*loadBalancerInfo) (*loadBalancerInfo, error) {
func (hns hns) getLoadBalancer(endpoints []endpointsInfo, flags loadBalancerFlags, sourceVip string, vip string, protocol uint16, internalPort uint16, externalPort uint16, previousLoadBalancers map[loadBalancerIdentifier]*loadBalancerInfo) (*loadBalancerInfo, error) {
var id loadBalancerIdentifier
vips := []string{}
if len(vip) > 0 {
@ -333,7 +346,7 @@ func (hns hnsV2) getLoadBalancer(endpoints []endpointsInfo, flags loadBalancerFl
return lbInfo, err
}
func (hns hnsV2) deleteLoadBalancer(hnsID string) error {
func (hns hns) deleteLoadBalancer(hnsID string) error {
lb, err := hcn.GetLoadBalancerByID(hnsID)
if err != nil {
// Return silently

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@ -1,315 +0,0 @@
//go:build windows
// +build windows
/*
Copyright 2018 The Kubernetes Authors.
Licensed under the Apache License, Version 2.0 (the "License");
you may not use this file except in compliance with the License.
You may obtain a copy of the License at
http://www.apache.org/licenses/LICENSE-2.0
Unless required by applicable law or agreed to in writing, software
distributed under the License is distributed on an "AS IS" BASIS,
WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
See the License for the specific language governing permissions and
limitations under the License.
*/
package winkernel
import (
"encoding/json"
"fmt"
"strings"
"github.com/Microsoft/hcsshim"
"k8s.io/klog/v2"
netutils "k8s.io/utils/net"
)
type HostNetworkService interface {
getNetworkByName(name string) (*hnsNetworkInfo, error)
getAllEndpointsByNetwork(networkName string) (map[string]*endpointsInfo, error)
getEndpointByID(id string) (*endpointsInfo, error)
getEndpointByIpAddress(ip string, networkName string) (*endpointsInfo, error)
getEndpointByName(id string) (*endpointsInfo, error)
createEndpoint(ep *endpointsInfo, networkName string) (*endpointsInfo, error)
deleteEndpoint(hnsID string) error
getLoadBalancer(endpoints []endpointsInfo, flags loadBalancerFlags, sourceVip string, vip string, protocol uint16, internalPort uint16, externalPort uint16, previousLoadBalancers map[loadBalancerIdentifier]*loadBalancerInfo) (*loadBalancerInfo, error)
getAllLoadBalancers() (map[loadBalancerIdentifier]*loadBalancerInfo, error)
deleteLoadBalancer(hnsID string) error
}
// V1 HNS API
type hnsV1 struct{}
func (hns hnsV1) getNetworkByName(name string) (*hnsNetworkInfo, error) {
hnsnetwork, err := hcsshim.GetHNSNetworkByName(name)
if err != nil {
klog.ErrorS(err, "failed to get HNS network by name", "name", name)
return nil, err
}
return &hnsNetworkInfo{
id: hnsnetwork.Id,
name: hnsnetwork.Name,
networkType: hnsnetwork.Type,
}, nil
}
func (hns hnsV1) getAllEndpointsByNetwork(networkName string) (map[string]*(endpointsInfo), error) {
hnsnetwork, err := hcsshim.GetHNSNetworkByName(networkName)
if err != nil {
klog.ErrorS(err, "failed to get HNS network by name", "name", networkName)
return nil, err
}
endpoints, err := hcsshim.HNSListEndpointRequest()
if err != nil {
return nil, fmt.Errorf("failed to list endpoints: %w", err)
}
endpointInfos := make(map[string]*(endpointsInfo))
for _, endpoint := range endpoints {
if strings.EqualFold(endpoint.VirtualNetwork, hnsnetwork.Id) {
// Add to map with key endpoint ID or IP address
// Storing this is expensive in terms of memory, however there is a bug in Windows Server 2019 that can cause two endpoints to be created with the same IP address.
// TODO: Store by IP only and remove any lookups by endpoint ID.
endpointInfos[endpoint.Id] = &endpointsInfo{
ip: endpoint.IPAddress.String(),
isLocal: !endpoint.IsRemoteEndpoint,
macAddress: endpoint.MacAddress,
hnsID: endpoint.Id,
hns: hns,
// only ready and not terminating endpoints were added to HNS
ready: true,
serving: true,
terminating: false,
}
endpointInfos[endpoint.IPAddress.String()] = endpointInfos[endpoint.Id]
}
}
klog.V(3).InfoS("Queried endpoints from network", "network", networkName)
return endpointInfos, nil
}
func (hns hnsV1) getEndpointByID(id string) (*endpointsInfo, error) {
hnsendpoint, err := hcsshim.GetHNSEndpointByID(id)
if err != nil {
klog.ErrorS(err, "failed to get HNS endpoint by id", "id", id)
return nil, err
}
return &endpointsInfo{
ip: hnsendpoint.IPAddress.String(),
//TODO: Change isLocal to isRemote
isLocal: !hnsendpoint.IsRemoteEndpoint,
macAddress: hnsendpoint.MacAddress,
hnsID: hnsendpoint.Id,
hns: hns,
// only ready and not terminating endpoints were added to HNS
ready: true,
serving: true,
terminating: false,
}, nil
}
func (hns hnsV1) getEndpointByIpAddress(ip string, networkName string) (*endpointsInfo, error) {
hnsnetwork, err := hcsshim.GetHNSNetworkByName(networkName)
if err != nil {
klog.ErrorS(err, "failed to get HNS network by name", "name", networkName)
return nil, err
}
endpoints, err := hcsshim.HNSListEndpointRequest()
if err != nil {
return nil, fmt.Errorf("failed to list endpoints: %w", err)
}
for _, endpoint := range endpoints {
equal := false
if endpoint.IPAddress != nil {
equal = endpoint.IPAddress.String() == ip
}
if equal && strings.EqualFold(endpoint.VirtualNetwork, hnsnetwork.Id) {
return &endpointsInfo{
ip: endpoint.IPAddress.String(),
isLocal: !endpoint.IsRemoteEndpoint,
macAddress: endpoint.MacAddress,
hnsID: endpoint.Id,
hns: hns,
// only ready and not terminating endpoints were added to HNS
ready: true,
serving: true,
terminating: false,
}, nil
}
}
return nil, fmt.Errorf("Endpoint %v not found on network %s", ip, networkName)
}
func (hns hnsV1) getEndpointByName(name string) (*endpointsInfo, error) {
hnsendpoint, err := hcsshim.GetHNSEndpointByName(name)
if err != nil {
klog.ErrorS(err, "failed to get HNS endpoint by name", "name", name)
return nil, err
}
return &endpointsInfo{
ip: hnsendpoint.IPAddress.String(),
//TODO: Change isLocal to isRemote
isLocal: !hnsendpoint.IsRemoteEndpoint,
macAddress: hnsendpoint.MacAddress,
hnsID: hnsendpoint.Id,
hns: hns,
}, nil
}
func (hns hnsV1) createEndpoint(ep *endpointsInfo, networkName string) (*endpointsInfo, error) {
hnsNetwork, err := hcsshim.GetHNSNetworkByName(networkName)
if err != nil {
return nil, err
}
hnsEndpoint := &hcsshim.HNSEndpoint{
MacAddress: ep.macAddress,
IPAddress: netutils.ParseIPSloppy(ep.ip),
}
var createdEndpoint *hcsshim.HNSEndpoint
if !ep.isLocal {
if len(ep.providerAddress) != 0 {
paPolicy := hcsshim.PaPolicy{
Type: hcsshim.PA,
PA: ep.providerAddress,
}
paPolicyJson, err := json.Marshal(paPolicy)
if err != nil {
return nil, err
}
hnsEndpoint.Policies = append(hnsEndpoint.Policies, paPolicyJson)
}
createdEndpoint, err = hnsNetwork.CreateRemoteEndpoint(hnsEndpoint)
if err != nil {
return nil, err
}
} else {
createdEndpoint, err = hnsNetwork.CreateEndpoint(hnsEndpoint)
if err != nil {
return nil, fmt.Errorf("local endpoint creation failed: %w", err)
}
}
return &endpointsInfo{
ip: createdEndpoint.IPAddress.String(),
isLocal: createdEndpoint.IsRemoteEndpoint,
macAddress: createdEndpoint.MacAddress,
hnsID: createdEndpoint.Id,
providerAddress: ep.providerAddress, //TODO get from createdEndpoint
hns: hns,
ready: ep.ready,
serving: ep.serving,
terminating: ep.terminating,
}, nil
}
func (hns hnsV1) deleteEndpoint(hnsID string) error {
hnsendpoint, err := hcsshim.GetHNSEndpointByID(hnsID)
if err != nil {
return err
}
_, err = hnsendpoint.Delete()
if err == nil {
klog.V(3).InfoS("Remote endpoint resource deleted id", "id", hnsID)
}
return err
}
func (hns hnsV1) getAllLoadBalancers() (map[loadBalancerIdentifier]*loadBalancerInfo, error) {
plists, err := hcsshim.HNSListPolicyListRequest()
var id loadBalancerIdentifier
if err != nil {
return nil, err
}
loadBalancers := make(map[loadBalancerIdentifier]*(loadBalancerInfo))
for _, plist := range plists {
// Validate if input meets any of the policy lists
lb := hcsshim.ELBPolicy{}
if err = json.Unmarshal(plist.Policies[0], &lb); err != nil {
continue
}
// Policy is ELB policy
portMap := lb.LBPolicy
if len(lb.VIPs) == 0 {
// Leave VIP uninitialized
id = loadBalancerIdentifier{protocol: uint16(portMap.Protocol), internalPort: portMap.InternalPort, externalPort: portMap.ExternalPort}
} else {
id = loadBalancerIdentifier{protocol: portMap.Protocol, internalPort: portMap.InternalPort, externalPort: portMap.ExternalPort, vip: lb.VIPs[0]}
}
loadBalancers[id] = &loadBalancerInfo{
hnsID: plist.ID,
}
}
return loadBalancers, nil
}
func (hns hnsV1) getLoadBalancer(endpoints []endpointsInfo, flags loadBalancerFlags, sourceVip string, vip string, protocol uint16, internalPort uint16, externalPort uint16, previousLoadBalancers map[loadBalancerIdentifier]*loadBalancerInfo) (*loadBalancerInfo, error) {
if flags.isDSR {
klog.V(3).InfoS("DSR is not supported in V1. Using non DSR instead")
}
var id loadBalancerIdentifier
if len(vip) > 0 {
id = loadBalancerIdentifier{protocol: protocol, internalPort: internalPort, externalPort: externalPort, vip: vip, endpointsCount: len(endpoints)}
} else {
id = loadBalancerIdentifier{protocol: protocol, internalPort: internalPort, externalPort: externalPort, endpointsCount: len(endpoints)}
}
if lb, found := previousLoadBalancers[id]; found {
klog.V(1).InfoS("Found existing Hns loadbalancer policy resource", "policies", lb)
return lb, nil
}
var hnsEndpoints []hcsshim.HNSEndpoint
for _, ep := range endpoints {
endpoint, err := hcsshim.GetHNSEndpointByID(ep.hnsID)
if err != nil {
return nil, err
}
hnsEndpoints = append(hnsEndpoints, *endpoint)
}
lb, err := hcsshim.AddLoadBalancer(
hnsEndpoints,
flags.isILB,
sourceVip,
vip,
protocol,
internalPort,
externalPort,
)
if err == nil {
klog.V(1).InfoS("Hns loadbalancer policy resource", "policies", lb)
} else {
return nil, err
}
lbInfo := &loadBalancerInfo{
hnsID: lb.ID,
}
// Add to map of load balancers
previousLoadBalancers[id] = lbInfo
return lbInfo, err
}
func (hns hnsV1) deleteLoadBalancer(hnsID string) error {
if len(hnsID) == 0 {
// Return silently
return nil
}
// Cleanup HNS policies
hnsloadBalancer, err := hcsshim.GetPolicyListByID(hnsID)
if err != nil {
return err
}
klog.V(2).InfoS("Removing Policy", "policies", hnsloadBalancer)
_, err = hnsloadBalancer.Delete()
return err
}

View File

@ -45,76 +45,7 @@ const (
)
func TestGetNetworkByName(t *testing.T) {
hnsV1 := hnsV1{}
hnsV2 := hnsV2{}
testGetNetworkByName(t, hnsV1)
testGetNetworkByName(t, hnsV2)
}
func TestGetEndpointByID(t *testing.T) {
hnsV1 := hnsV1{}
hnsV2 := hnsV2{}
testGetEndpointByID(t, hnsV1)
testGetEndpointByID(t, hnsV2)
}
func TestGetEndpointByIpAddressAndName(t *testing.T) {
hnsV1 := hnsV1{}
hnsV2 := hnsV2{}
testGetEndpointByIpAddressAndName(t, hnsV1)
testGetEndpointByIpAddressAndName(t, hnsV2)
}
func TestCreateEndpointLocal(t *testing.T) {
hnsV1 := hnsV1{}
hnsV2 := hnsV2{}
testCreateEndpointLocal(t, hnsV1)
testCreateEndpointLocal(t, hnsV2)
}
func TestCreateEndpointRemotePA(t *testing.T) {
hnsV1 := hnsV1{}
hnsV2 := hnsV2{}
testCreateEndpointRemote(t, hnsV1, epPaAddress)
testCreateEndpointRemote(t, hnsV2, epPaAddress)
}
func TestCreateEndpointRemoteNoPA(t *testing.T) {
hnsV1 := hnsV1{}
hnsV2 := hnsV2{}
testCreateEndpointRemote(t, hnsV1, "")
testCreateEndpointRemote(t, hnsV2, "")
}
func TestDeleteEndpoint(t *testing.T) {
hnsV1 := hnsV1{}
hnsV2 := hnsV2{}
testDeleteEndpoint(t, hnsV1)
testDeleteEndpoint(t, hnsV2)
}
func TestGetLoadBalancerExisting(t *testing.T) {
hnsV1 := hnsV1{}
hnsV2 := hnsV2{}
testGetLoadBalancerExisting(t, hnsV1)
testGetLoadBalancerExisting(t, hnsV2)
}
func TestGetLoadBalancerNew(t *testing.T) {
hnsV1 := hnsV1{}
hnsV2 := hnsV2{}
testGetLoadBalancerNew(t, hnsV1)
testGetLoadBalancerNew(t, hnsV2)
}
func TestDeleteLoadBalancer(t *testing.T) {
hnsV1 := hnsV1{}
hnsV2 := hnsV2{}
testDeleteLoadBalancer(t, hnsV1)
testDeleteLoadBalancer(t, hnsV2)
}
func testGetNetworkByName(t *testing.T, hns HostNetworkService) {
hns := hns{}
Network := mustTestNetwork(t)
network, err := hns.getNetworkByName(Network.Name)
@ -130,7 +61,9 @@ func testGetNetworkByName(t *testing.T, hns HostNetworkService) {
t.Error(err)
}
}
func testGetEndpointByID(t *testing.T, hns HostNetworkService) {
func TestGetEndpointByID(t *testing.T) {
hns := hns{}
Network := mustTestNetwork(t)
ipConfig := &hcn.IpConfig{
@ -167,7 +100,9 @@ func testGetEndpointByID(t *testing.T, hns HostNetworkService) {
t.Error(err)
}
}
func testGetEndpointByIpAddressAndName(t *testing.T, hns HostNetworkService) {
func TestGetEndpointByIpAddressAndName(t *testing.T) {
hns := hns{}
Network := mustTestNetwork(t)
ipConfig := &hcn.IpConfig{
@ -215,7 +150,9 @@ func testGetEndpointByIpAddressAndName(t *testing.T, hns HostNetworkService) {
t.Error(err)
}
}
func testCreateEndpointLocal(t *testing.T, hns HostNetworkService) {
func TestCreateEndpointLocal(t *testing.T) {
hns := hns{}
Network := mustTestNetwork(t)
endpoint := &endpointsInfo{
@ -251,8 +188,11 @@ func testCreateEndpointLocal(t *testing.T, hns HostNetworkService) {
t.Error(err)
}
}
func testCreateEndpointRemote(t *testing.T, hns HostNetworkService, providerAddress string) {
func TestCreateEndpointRemote(t *testing.T) {
hns := hns{}
Network := mustTestNetwork(t)
providerAddress := epPaAddress
endpoint := &endpointsInfo{
ip: epIpAddressRemote,
@ -291,7 +231,9 @@ func testCreateEndpointRemote(t *testing.T, hns HostNetworkService, providerAddr
t.Error(err)
}
}
func testDeleteEndpoint(t *testing.T, hns HostNetworkService) {
func TestDeleteEndpoint(t *testing.T) {
hns := hns{}
Network := mustTestNetwork(t)
ipConfig := &hcn.IpConfig{
@ -325,7 +267,8 @@ func testDeleteEndpoint(t *testing.T, hns HostNetworkService) {
}
}
func testGetLoadBalancerExisting(t *testing.T, hns HostNetworkService) {
func TestGetLoadBalancerExisting(t *testing.T) {
hns := hns{}
Network := mustTestNetwork(t)
lbs := make(map[loadBalancerIdentifier]*(loadBalancerInfo))
@ -369,6 +312,7 @@ func testGetLoadBalancerExisting(t *testing.T, hns HostNetworkService) {
}
endpoints := []endpointsInfo{*endpoint}
lb, err := hns.getLoadBalancer(endpoints, loadBalancerFlags{}, sourceVip, serviceVip, protocol, internalPort, externalPort, lbs)
if err != nil {
t.Error(err)
}
@ -390,7 +334,9 @@ func testGetLoadBalancerExisting(t *testing.T, hns HostNetworkService) {
t.Error(err)
}
}
func testGetLoadBalancerNew(t *testing.T, hns HostNetworkService) {
func TestGetLoadBalancerNew(t *testing.T) {
hns := hns{}
Network := mustTestNetwork(t)
// We keep this empty to ensure we test for new load balancer creation.
lbs := make(map[loadBalancerIdentifier]*(loadBalancerInfo))
@ -440,7 +386,9 @@ func testGetLoadBalancerNew(t *testing.T, hns HostNetworkService) {
t.Error(err)
}
}
func testDeleteLoadBalancer(t *testing.T, hns HostNetworkService) {
func TestDeleteLoadBalancer(t *testing.T) {
hns := hns{}
Network := mustTestNetwork(t)
ipConfig := &hcn.IpConfig{
@ -492,6 +440,7 @@ func testDeleteLoadBalancer(t *testing.T, hns HostNetworkService) {
t.Error(err)
}
}
func mustTestNetwork(t *testing.T) *hcn.HostComputeNetwork {
network, err := createTestNetwork()
if err != nil {
@ -502,6 +451,7 @@ func mustTestNetwork(t *testing.T) *hcn.HostComputeNetwork {
}
return network
}
func createTestNetwork() (*hcn.HostComputeNetwork, error) {
network := &hcn.HostComputeNetwork{
Type: NETWORK_TYPE_OVERLAY,

View File

@ -146,14 +146,15 @@ type remoteSubnetInfo struct {
const NETWORK_TYPE_OVERLAY = "overlay"
func newHostNetworkService() (HostNetworkService, hcn.SupportedFeatures) {
var hns HostNetworkService
hns = hnsV1{}
var h HostNetworkService
supportedFeatures := hcn.GetSupportedFeatures()
if supportedFeatures.Api.V2 {
hns = hnsV2{}
h = hns{}
} else {
panic("Windows HNS Api V2 required. This version of windows does not support API V2")
}
return hns, supportedFeatures
return h, supportedFeatures
}
func getNetworkName(hnsNetworkName string) (string, error) {