[Windows] Use syscall to query or operate network adapters (#4898)

1. Add syscall to support getting adapter address in all compartments
2. Add syscall to get or set netIPInterface entry
3. Modify container MTU inside compartment.
4. Add syscall for route on Windows

Signed-off-by: wenyingd <[email protected]>
Signed-off-by: Qiyue Yao <[email protected]>

Author: wenyingd

docs/design/windows-design.md

@@ -209,7 +209,7 @@ It is processed and forwarded by OVS, and controlled with OpenFlow entries.
 
 ### Service Traffic
 
-Kube-proxy userspace mode is configured to provide NodePort Service function. A specific Network Adapter named
+Kube-proxy userspace mode is configured to provide NodePort Service function. A specific Network adapter named
 "HNS Internal NIC" is provided to kube-proxy to configure Service addresses. The OpenFlow entries for the
 NodePort Service traffic on Windows are the same as those on Linux.
 

pkg/agent/agent_windows.go

@@ -92,12 +92,10 @@ func (i *Initializer) prepareHNSNetworkAndOVSExtension() error {
 	i.nodeConfig.UplinkNetConfig.Index = adapter.Index
 	defaultGW, err := util.GetDefaultGatewayByInterfaceIndex(adapter.Index)
 	if err != nil {
-		if strings.Contains(err.Error(), "No matching MSFT_NetRoute objects found") {
-			klog.InfoS("No default gateway found on interface", "interface", adapter.Name)
-			defaultGW = ""
-		} else {
-			return err
-		}
+		return err
+	}
+	if defaultGW == "" {
+		klog.InfoS("No default gateway found on interface", "interface", adapter.Name)
 	}
 	i.nodeConfig.UplinkNetConfig.Gateway = defaultGW
 	dnsServers, err := util.GetDNServersByInterfaceIndex(adapter.Index)

pkg/agent/cniserver/interface_configuration_windows.go

@@ -505,7 +505,7 @@ func (ic *ifConfigurator) addPostInterfaceCreateHook(containerID, endpointName s
 	go func() {
 		ifaceName := fmt.Sprintf("vEthernet (%s)", endpointName)
 		var err error
-		pollErr := wait.PollImmediate(time.Second, 60*time.Second, func() (bool, error) {
+		pollErr := wait.PollImmediate(100*time.Millisecond, 60*time.Second, func() (bool, error) {
 			containerAccess.lockContainer(containerID)
 			defer containerAccess.unlockContainer(containerID)
 			currentEP, ok := ic.getEndpoint(endpointName)
@@ -518,7 +518,7 @@ func (ic *ifConfigurator) addPostInterfaceCreateHook(containerID, endpointName s
 				return true, nil
 			}
 			if !hostInterfaceExistsFunc(ifaceName) {
-				klog.InfoS("Waiting for interface to be created", "interface", ifaceName)
+				klog.V(2).InfoS("Waiting for interface to be created", "interface", ifaceName)
 				return false, nil
 			}
 			if err = hook(); err != nil {

pkg/agent/route/route_windows.go

@@ -22,7 +22,6 @@ import (
 	"fmt"
 	"net"
 	"reflect"
-	"strings"
 	"sync"
 
 	"k8s.io/apimachinery/pkg/util/sets"
@@ -312,11 +311,7 @@ func (c *Client) addServiceCIDRRoute(serviceCIDR *net.IPNet) error {
 	// Remove stale routes.
 	for _, rt := range staleRoutes {
 		if err := util.RemoveNetRoute(rt); err != nil {
-			if strings.Contains(err.Error(), "No matching MSFT_NetRoute objects") {
-				klog.InfoS("Failed to delete stale Service CIDR route since the route has been deleted", "route", rt)
-			} else {
-				return fmt.Errorf("failed to delete stale Service CIDR route %s: %w", rt.String(), err)
-			}
+			return fmt.Errorf("failed to delete stale Service CIDR route %s: %w", rt.String(), err)
 		} else {
 			klog.V(4).InfoS("Deleted stale Service CIDR route successfully", "route", rt)
 		}
@@ -547,11 +542,7 @@ func (c *Client) DeleteExternalIPRoute(externalIP net.IP) error {
 		return nil
 	}
 	if err := util.RemoveNetRoute(route.(*util.Route)); err != nil {
-		if strings.Contains(err.Error(), "No matching MSFT_NetRoute objects") {
-			klog.InfoS("Failed to delete route for external IP since it doesn't exist", "IP", externalIPStr)
-		} else {
-			return fmt.Errorf("failed to delete route for external IP %s: %w", externalIPStr, err)
-		}
+		return fmt.Errorf("failed to delete route for external IP %s: %w", externalIPStr, err)
 	}
 	c.serviceRoutes.Delete(externalIPStr)
 	klog.V(4).InfoS("Deleted route for external IP", "IP", externalIPStr)

pkg/agent/route/route_windows_test.go

@@ -84,10 +84,6 @@ func TestRouteOperation(t *testing.T) {
 	err = client.Reconcile([]string{dest2})
 	require.Nil(t, err)
 
-	routes5, err := util.GetNetRoutes(gwLink, destCIDR1)
-	require.Nil(t, err)
-	assert.Equal(t, 0, len(routes5))
-
 	err = client.DeleteRoutes(destCIDR2)
 	require.Nil(t, err)
 	routes7, err := util.GetNetRoutes(gwLink, destCIDR2)

pkg/agent/util/net_linux_test.go

@@ -407,7 +407,7 @@ func TestSetAdapterMACAddress(t *testing.T) {
 		wantErr       error
 	}{
 		{
-			name: "Set Adapter MAC",
+			name: "Set adapter MAC",
 			expectedCalls: func(mockNetlink *netlinktest.MockInterfaceMockRecorder) {
 				mockNetlink.LinkByName("test-en0").Return(testLink, nil)
 				mockNetlink.LinkSetHardwareAddr(testLink, testMACAddr).Return(nil)