Adding node interface, SNAT and OVN Node switch port

    - Adding nfn proto for node interface MAC and IP address
    - Adding node switch ports in NFN Operator
    - Adding grpc client in nfn agent to get mac and IP address for node interface
    - Adding feature to create Node interface with OVS internal port
    - Make sure pod controller requeue the pod request for empty node field in pod spec
    - Unique node interface name using SHA and maintain 15 charactor for OVS switch port
    - Adding SNAT for default interface in each node
    - Adding iptables modules for SNAT rules

Signed-off-by: Kuralamudhan Ramakrishnan <kuralamudhan.ramakrishnan@intel.com>
Change-Id: I6cfa36e45007e796eb651345f9f0751329defcf7

3 files changed, 60 insertions, 30 deletions

diff --git a/internal/pkg/nfnNotify/proto/nfn.pb.go b/internal/pkg/nfnNotify/proto/nfn.pb.go
index d419af8..750d55b 100644
--- a/internal/pkg/nfnNotify/proto/nfn.pb.go
+++ b/internal/pkg/nfnNotify/proto/nfn.pb.go
@@ -371,6 +371,8 @@ func (m *DirectInfo) GetProviderIntf() string {
 }
 
 type InSync struct {
+	NodeIntfIpAddress    string   `protobuf:"bytes,1,opt,name=node_intf_ip_address,json=nodeIntfIpAddress,proto3" json:"node_intf_ip_address,omitempty"`
+	NodeIntfMacAddress   string   `protobuf:"bytes,2,opt,name=node_intf_mac_address,json=nodeIntfMacAddress,proto3" json:"node_intf_mac_address,omitempty"`
 	XXX_NoUnkeyedLiteral struct{} `json:"-"`
 	XXX_unrecognized     []byte   `json:"-"`
 	XXX_sizecache        int32    `json:"-"`
@@ -401,6 +403,20 @@ func (m *InSync) XXX_DiscardUnknown() {
 
 var xxx_messageInfo_InSync proto.InternalMessageInfo
 
+func (m *InSync) GetNodeIntfIpAddress() string {
+	if m != nil {
+		return m.NodeIntfIpAddress
+	}
+	return ""
+}
+
+func (m *InSync) GetNodeIntfMacAddress() string {
+	if m != nil {
+		return m.NodeIntfMacAddress
+	}
+	return ""
+}
+
 func init() {
 	proto.RegisterType((*SubscribeContext)(nil), "SubscribeContext")
 	proto.RegisterType((*Notification)(nil), "Notification")
@@ -416,34 +432,37 @@ func init() {
 }
 
 var fileDescriptor_5b809db4a7814953 = []byte{
-	// 431 bytes of a gzipped FileDescriptorProto
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+	// 472 bytes of a gzipped FileDescriptorProto
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+	0xad, 0x54, 0x7e, 0xa2, 0xa5, 0x03, 0x00, 0x00,
 }
 
 // Reference imports to suppress errors if they are not otherwise used.
diff --git a/internal/pkg/nfnNotify/proto/nfn.proto b/internal/pkg/nfnNotify/proto/nfn.proto
index 02855e7..567df29 100644
--- a/internal/pkg/nfnNotify/proto/nfn.proto
+++ b/internal/pkg/nfnNotify/proto/nfn.proto
@@ -47,4 +47,6 @@ message DirectInfo {
 }
 
 message InSync {
+    string node_intf_ip_address = 1;
+    string node_intf_mac_address = 2;
 }
diff --git a/internal/pkg/nfnNotify/server.go b/internal/pkg/nfnNotify/server.go
index ac22d68..a201618 100644
--- a/internal/pkg/nfnNotify/server.go
+++ b/internal/pkg/nfnNotify/server.go
@@ -4,13 +4,14 @@ import (
 	"fmt"
 	"net"
 	pb "ovn4nfv-k8s-plugin/internal/pkg/nfnNotify/proto"
+	"ovn4nfv-k8s-plugin/internal/pkg/node"
 	v1alpha1 "ovn4nfv-k8s-plugin/pkg/apis/k8s/v1alpha1"
 	clientset "ovn4nfv-k8s-plugin/pkg/generated/clientset/versioned"
 	"strings"
 
 	"google.golang.org/grpc"
 	"google.golang.org/grpc/reflection"
-	"k8s.io/apimachinery/pkg/apis/meta/v1"
+	v1 "k8s.io/apimachinery/pkg/apis/meta/v1"
 	"k8s.io/client-go/kubernetes"
 	"k8s.io/client-go/rest"
 	logf "sigs.k8s.io/controller-runtime/pkg/runtime/log"
@@ -45,6 +46,11 @@ func (s *serverDB) Subscribe(sc *pb.SubscribeContext, ss pb.NfnNotify_SubscribeS
 	if nodeName == "" {
 		return fmt.Errorf("Node name can't be empty")
 	}
+
+	nodeIntfIPAddr, nodeIntfMacAddr, err := node.AddNodeLogicalPorts(nodeName)
+	if err != nil {
+		return fmt.Errorf("Error in creating node logical port for node- %s: %v", nodeName, err)
+	}
 	cp := client{
 		context: sc,
 		stream:  ss,
@@ -61,7 +67,10 @@ func (s *serverDB) Subscribe(sc *pb.SubscribeContext, ss pb.NfnNotify_SubscribeS
 	inSyncMsg := pb.Notification{
 		CniType: "ovn4nfv",
 		Payload: &pb.Notification_InSync{
-			InSync: &pb.InSync{},
+			InSync: &pb.InSync{
+				NodeIntfIpAddress:  nodeIntfIPAddr,
+				NodeIntfMacAddress: nodeIntfMacAddr,
+			},
 		},
 	}
 	log.Info("Send Insync")