Improve scalability of the Linux load balancing

daemon/network.go

@@ -4,7 +4,6 @@ import (
 	"context"
 	"fmt"
 	"net"
-	"runtime"
 	"sort"
 	"strconv"
 	"strings"
@@ -232,9 +231,7 @@ func (daemon *Daemon) releaseIngress(id string) {
 		return
 	}
 
-	daemon.deleteLoadBalancerSandbox(n)
-
-	if err := n.Delete(); err != nil {
+	if err := n.Delete(libnetwork.NetworkDeleteOptionRemoveLB); err != nil {
 		logrus.Errorf("Failed to delete ingress network %s: %v", n.ID(), err)
 		return
 	}
@@ -351,7 +348,7 @@ func (daemon *Daemon) createNetwork(create types.NetworkCreateRequest, id string
 		nwOptions = append(nwOptions, libnetwork.NetworkOptionConfigFrom(create.ConfigFrom.Network))
 	}
 
-	if agent && driver == "overlay" && (create.Ingress || runtime.GOOS == "windows") {
+	if agent && driver == "overlay" {
 		nodeIP, exists := daemon.GetAttachmentStore().GetIPForNetwork(id)
 		if !exists {
 			return nil, fmt.Errorf("Failed to find a load balancer IP to use for network: %v", id)
@@ -514,37 +511,6 @@ func (daemon *Daemon) DeleteNetwork(networkID string) error {
 	return daemon.deleteNetwork(n, false)
 }
 
-func (daemon *Daemon) deleteLoadBalancerSandbox(n libnetwork.Network) {
-	controller := daemon.netController
-
-	//The only endpoint left should be the LB endpoint (nw.Name() + "-endpoint")
-	endpoints := n.Endpoints()
-	if len(endpoints) == 1 {
-		sandboxName := n.Name() + "-sbox"
-
-		info := endpoints[0].Info()
-		if info != nil {
-			sb := info.Sandbox()
-			if sb != nil {
-				if err := sb.DisableService(); err != nil {
-					logrus.Warnf("Failed to disable service on sandbox %s: %v", sandboxName, err)
-					//Ignore error and attempt to delete the load balancer endpoint
-				}
-			}
-		}
-
-		if err := endpoints[0].Delete(true); err != nil {
-			logrus.Warnf("Failed to delete endpoint %s (%s) in %s: %v", endpoints[0].Name(), endpoints[0].ID(), sandboxName, err)
-			//Ignore error and attempt to delete the sandbox.
-		}
-
-		if err := controller.SandboxDestroy(sandboxName); err != nil {
-			logrus.Warnf("Failed to delete %s sandbox: %v", sandboxName, err)
-			//Ignore error and attempt to delete the network.
-		}
-	}
-}
-
 func (daemon *Daemon) deleteNetwork(nw libnetwork.Network, dynamic bool) error {
 	if runconfig.IsPreDefinedNetwork(nw.Name()) && !dynamic {
 		err := fmt.Errorf("%s is a pre-defined network and cannot be removed", nw.Name())

hack/dockerfile/install/proxy.installer

@@ -3,7 +3,7 @@
 # LIBNETWORK_COMMIT is used to build the docker-userland-proxy binary. When
 # updating the binary version, consider updating github.com/docker/libnetwork
 # in vendor.conf accordingly
-LIBNETWORK_COMMIT=430c00a6a6b3dfdd774f21e1abd4ad6b0216c629
+LIBNETWORK_COMMIT=3ac297bc7fd0afec9051bbb47024c9bc1d75bf5b
 
 install_proxy() {
 	case "$1" in

vendor.conf

@@ -37,7 +37,7 @@ github.com/mitchellh/hashstructure 2bca23e0e452137f789efbc8610126fd8b94f73b
 #get libnetwork packages
 
 # When updating, also update LIBNETWORK_COMMIT in hack/dockerfile/install/proxy accordingly
-github.com/docker/libnetwork 430c00a6a6b3dfdd774f21e1abd4ad6b0216c629
+github.com/docker/libnetwork 3ac297bc7fd0afec9051bbb47024c9bc1d75bf5b
 github.com/docker/go-events 9461782956ad83b30282bf90e31fa6a70c255ba9
 github.com/armon/go-radix e39d623f12e8e41c7b5529e9a9dd67a1e2261f80
 github.com/armon/go-metrics eb0af217e5e9747e41dd5303755356b62d28e3ec