// Initialize the fgraph elements on the switch
func (self *OFSwitch) initFgraph() error {
// Create the DBs
self.tableDb = make(map[uint8]*Table)
self.outputPorts = make(map[uint32]*Output)
// Create the table 0
table := new(Table)
table.Switch = self
table.TableId = 0
table.flowDb = make(map[string]*Flow)
self.tableDb[0] = table
// Create drop action
dropAction := new(Output)
dropAction.outputType = "drop"
dropAction.portNo = openflow13.P_ANY
self.dropAction = dropAction
// create send to controller action
sendToCtrler := new(Output)
sendToCtrler.outputType = "toController"
sendToCtrler.portNo = openflow13.P_CONTROLLER
self.sendToCtrler = sendToCtrler
// Clear all existing flood lists
groupMod := openflow13.NewGroupMod()
groupMod.GroupId = openflow13.OFPG_ALL
groupMod.Command = openflow13.OFPGC_DELETE
groupMod.Type = openflow13.OFPGT_ALL
self.Send(groupMod)
return nil
}
// Install a group entry in OF switch
func (self *Flood) install() error {
groupMod := openflow13.NewGroupMod()
groupMod.GroupId = self.GroupId
// Change the OP to modify if it was already installed
if self.isInstalled {
groupMod.Command = openflow13.OFPGC_MODIFY
}
// OF type for flood list
groupMod.Type = openflow13.OFPGT_ALL
// Loop thru all output ports and add it to group bucket
for _, output := range self.FloodList {
// Get the output action from output entry
act := output.outPort.GetOutAction()
if act != nil {
// Create a new bucket for each port
bkt := openflow13.NewBucket()
// Set tunnel Id if required
if output.isTunnel {
tunnelField := openflow13.NewTunnelIdField(output.tunnelId)
setTunnel := openflow13.NewActionSetField(*tunnelField)
bkt.AddAction(setTunnel)
}
// Always remove vlan tag
popVlan := openflow13.NewActionPopVlan()
bkt.AddAction(popVlan)
// Add the output action to the bucket
bkt.AddAction(act)
// Add the bucket to group
groupMod.AddBucket(*bkt)
}
}
log.Infof("Installing Group entry: %+v", groupMod)
// Send it to the switch
self.Switch.Send(groupMod)
// Mark it as installed
self.isInstalled = true
return nil
}
// Delete a flood list
func (self *Flood) Delete() error {
// Remove it from OVS if its installed
if self.isInstalled {
groupMod := openflow13.NewGroupMod()
groupMod.GroupId = self.GroupId
groupMod.Command = openflow13.OFPGC_DELETE
log.Infof("Deleting Group entry: %+v", groupMod)
// Send it to the switch
self.Switch.Send(groupMod)
}
return nil
}