Enable local traffic detection using the interface options

This commit adds the framework for the new local detection
modes BridgeInterface and InterfaceNamePrefix to work.

Signed-off-by: Surya Seetharaman <suryaseetharaman.9@gmail.com>

Kubernetes-commit: 7d480d8ac8e33330af8c8ea863d19d9b547f3bdb

config/v1alpha1/types.go

@@ -103,6 +103,18 @@ type KubeProxyWinkernelConfiguration struct {
 	ForwardHealthCheckVip bool `json:"forwardHealthCheckVip"`
 }
 
+// DetectLocalConfiguration contains optional settings related to DetectLocalMode option
+type DetectLocalConfiguration struct {
+	// BridgeInterface is a string argument which represents a single bridge interface name.
+	// Kube-proxy considers traffic as local if originating from this given bridge.
+	// This argument should be set if DetectLocalMode is set to LocalModeBridgeInterface.
+	BridgeInterface string `json:"bridgeInterface"`
+	// InterfaceNamePrefix is a string argument which represents a single interface prefix name.
+	// Kube-proxy considers traffic as local if originating from one or more interfaces which match
+	// the given prefix. This argument should be set if DetectLocalMode is set to LocalModeInterfaceNamePrefix.
+	InterfaceNamePrefix string `json:"interfaceNamePrefix"`
+}
+
 // +k8s:deepcopy-gen:interfaces=k8s.io/apimachinery/pkg/runtime.Object
 
 // KubeProxyConfiguration contains everything necessary to configure the
@@ -170,6 +182,8 @@ type KubeProxyConfiguration struct {
 	ShowHiddenMetricsForVersion string `json:"showHiddenMetricsForVersion"`
 	// DetectLocalMode determines mode to use for detecting local traffic, defaults to LocalModeClusterCIDR
 	DetectLocalMode LocalMode `json:"detectLocalMode"`
+	// DetectLocal contains optional configuration settings related to DetectLocalMode.
+	DetectLocal DetectLocalConfiguration `json:"detectLocal"`
 }
 
 // ProxyMode represents modes used by the Kubernetes proxy server.

config/v1alpha1/zz_generated.deepcopy.go

@@ -26,6 +26,22 @@ import (
 	runtime "k8s.io/apimachinery/pkg/runtime"
 )
 
+// DeepCopyInto is an autogenerated deepcopy function, copying the receiver, writing into out. in must be non-nil.
+func (in *DetectLocalConfiguration) DeepCopyInto(out *DetectLocalConfiguration) {
+	*out = *in
+	return
+}
+
+// DeepCopy is an autogenerated deepcopy function, copying the receiver, creating a new DetectLocalConfiguration.
+func (in *DetectLocalConfiguration) DeepCopy() *DetectLocalConfiguration {
+	if in == nil {
+		return nil
+	}
+	out := new(DetectLocalConfiguration)
+	in.DeepCopyInto(out)
+	return out
+}
+
 // DeepCopyInto is an autogenerated deepcopy function, copying the receiver, writing into out. in must be non-nil.
 func (in *KubeProxyConfiguration) DeepCopyInto(out *KubeProxyConfiguration) {
 	*out = *in
@@ -54,6 +70,7 @@ func (in *KubeProxyConfiguration) DeepCopyInto(out *KubeProxyConfiguration) {
 		copy(*out, *in)
 	}
 	out.Winkernel = in.Winkernel
+	out.DetectLocal = in.DetectLocal
 	return
 }