Fix: Resolve issue with skipped execution of sg annotations (#3700)

The problem causing ineffective application of sg annotations is
that, during virtual machine restart, the logical switch port is
intentionally not deleted.(I guess).

When sg annotations are added and the VM is restarted, the create
logical switch port logic is skipped as it detects the existing
lsp. Consequently, the annotation fails to attach to the lsp. Even
when we sync lsp for sg, it has no effect.

A simple fix is to update the existing lsp during lsp creation if
it already exists. This approach ensures correct annotation
attachment and addresses the skipped execution issue.

Signed-off-by: wfnuser <wfnuser@hotmail.com>

pkg/ovs/ovn-nb-logical_switch_port.go

@@ -16,18 +16,7 @@ import (
 	"github.com/kubeovn/kube-ovn/pkg/util"
 )
 
-func (c *OVNNbClient) CreateLogicalSwitchPort(lsName, lspName, ip, mac, podName, namespace string, portSecurity bool, securityGroups, vips string, enableDHCP bool, dhcpOptions *DHCPOptionsUUIDs, vpc string) error {
-	exist, err := c.LogicalSwitchPortExists(lspName)
-	if err != nil {
-		klog.Error(err)
-		return err
-	}
-
-	// ignore
-	if exist {
-		return nil
-	}
-
+func buildLogicalSwitchPort(lspName, ip, mac, podName, namespace string, portSecurity bool, securityGroups, vips string, enableDHCP bool, dhcpOptions *DHCPOptionsUUIDs, vpc string) *ovnnb.LogicalSwitchPort {
 	/* normal lsp creation */
 	lsp := &ovnnb.LogicalSwitchPort{
 		UUID:        ovsclient.NamedUUID(),
@@ -88,6 +77,27 @@ func (c *OVNNbClient) CreateLogicalSwitchPort(lsName, lspName, ip, mac, podName,
 		}
 	}
 
+	return lsp
+}
+
+func (c *OVNNbClient) CreateLogicalSwitchPort(lsName, lspName, ip, mac, podName, namespace string, portSecurity bool, securityGroups, vips string, enableDHCP bool, dhcpOptions *DHCPOptionsUUIDs, vpc string) error {
+	exist, err := c.LogicalSwitchPortExists(lspName)
+	if err != nil {
+		klog.Error(err)
+		return err
+	}
+
+	// update if exists
+	if exist {
+		lsp := buildLogicalSwitchPort(lspName, ip, mac, podName, namespace, portSecurity, securityGroups, vips, enableDHCP, dhcpOptions, vpc)
+		if err := c.UpdateLogicalSwitchPort(lsp, &lsp.PortSecurity, &lsp.ExternalIDs); err != nil {
+			klog.Error(err)
+			return fmt.Errorf("failed to update logical switch port %s: %v", lspName, err)
+		}
+		return nil
+	}
+
+	lsp := buildLogicalSwitchPort(lspName, ip, mac, podName, namespace, portSecurity, securityGroups, vips, enableDHCP, dhcpOptions, vpc)
 	ops, err := c.CreateLogicalSwitchPortOp(lsp, lsName)
 	if err != nil {
 		klog.Error(err)