Closed rutuja-clusters closed 2 years ago
Hi @rutuja-clusters
I use ovs 2.13.5 on ubuntu 20.04 and my application receive OfpBarrierReply. Could you tell me your application implementation?
I use following sample application.
$ cat gofc.go
package main
import (
"fmt"
"github.com/Kmotiko/gofc"
"github.com/Kmotiko/gofc/ofprotocol/ofp13"
)
type SampleController struct {
// add any paramter used in controller.
}
func NewSampleController() *SampleController {
ofc := new(SampleController)
return ofc
}
func (c *SampleController) HandleSwitchFeatures(msg *ofp13.OfpSwitchFeatures, dp *gofc.Datapath) {
br := ofp13.NewOfpBarrierRequest()
dp.Send(br)
}
func (c *SampleController) HandleBarrierReply(msg *ofp13.OfpHeader, dp *gofc.Datapath) {
fmt.Println("Handle BarrierReply")
}
func main() {
// regist app
ofc := NewSampleController()
gofc.GetAppManager().RegistApplication(ofc)
// start server
gofc.ServerLoop(gofc.DEFAULT_PORT)
}
Before running application, set controller to ovs.
$ sudo ovs-vsctl show
ovs_version: "2.13.5"
$ sudo ovs-vsctl add-br br0
$ sudo ovs-vsctl set-controller br0 tcp:127.0.0.1:6653
Then execute my application and following messages is displayed indicating that the controller application has received aBarrierReply.
$ go run gofc.go
recv SwitchFeatures
Handle BarrierReply
recv EchoReq
Thank you for providing a sample application. I realized it was due to the incorrect implementation of the method 'HandleBarrierReply'. The barrier replies are being received now, thanks!
We have gofc running inside an application. It generates barrier requests using ofp13.NewOfpBarrierRequest(). However, we do not see any barrier reply from switch in the controller (HandleBarrierReply(hdr ofp13.OfpHeader, dp Datapath) method has been implemented). We are able to receive other msgs - HandleSwitchFeatures, etc.
On running
ovs-ofctl snoop br0.uvms --pidfile
, the barrier request, reply are visible in the shell output.However, its not showing up in the controller. **OVS version - 2.14.2**
Can you please let us know, if we are missing something here?