func (fastdp *FastDatapath) Miss(packet []byte, fks odp.FlowKeys) error {
ingress := fks[odp.OVS_KEY_ATTR_IN_PORT].(odp.InPortFlowKey).VportID()
log.Debug("ODP miss ", fks, " on port ", ingress)
lock := fastdp.startLock()
defer lock.unlock()
handler := fastdp.getMissHandler(ingress)
if handler == nil {
return nil
}
// Always include the ingress vport in the flow key. While
// this is not strictly necessary in some cases (e.g. for
// delivery to a local netdev based on the dest MAC),
// including the ingress in every flow makes things simpler
// in touchFlow.
mfop := NewMultiFlowOp(false, handler(fks, &lock), odpFlowKey(odp.NewInPortFlowKey(ingress)))
fastdp.send(mfop, packet, &lock)
return nil
}
func flagsToFlowSpec(f Flags, dpif *odp.Dpif) (dp odp.DatapathHandle, flow odp.FlowSpec, ok bool) {
flow = odp.NewFlowSpec()
var inPort string
f.StringVar(&inPort, "in-port", "", "key: incoming vport")
var ethSrc, ethDst string
f.StringVar(ðSrc, "eth-src", "", "key: ethernet source MAC")
f.StringVar(ðDst, "eth-dst", "", "key: ethernet destination MAC")
var tun tunnelFlags
addTunnelFlags(f, &tun, "tunnel-", "tunnel ")
var setTun tunnelFlags
addTunnelFlags(f, &setTun, "set-tunnel-", "action: set tunnel ")
var output string
f.StringVar(&output, "output", "", "action: output to vports")
args := f.Parse(1, 1)
dpp, _ := lookupDatapath(dpif, args[0])
if dpp == nil {
return
}
if inPort != "" {
vport, err := dpp.LookupVportByName(inPort)
if err != nil {
printErr("%s", err)
return
}
flow.AddKey(odp.NewInPortFlowKey(vport.ID))
}
// The ethernet flow key is mandatory
err := handleEthernetFlowKeyOptions(flow, ethSrc, ethDst)
if err != nil {
printErr("%s", err)
return
}
flowKey, err := parseTunnelFlags(&tun)
if err != nil {
printErr("%s", err)
return
}
if !flowKey.Ignored() {
flow.AddKey(flowKey)
}
// Actions are ordered, but flags aren't. As a temporary
// hack, we already put SET actions before an OUTPUT action.
setTunAttrs, err := parseSetTunnelFlags(&setTun)
if err != nil {
printErr("%s", err)
return
}
if setTunAttrs != nil {
flow.AddAction(*setTunAttrs)
}
if output != "" {
for _, vpname := range strings.Split(output, ",") {
vport, err := dpp.LookupVportByName(vpname)
if err != nil {
printErr("%s", err)
return
}
flow.AddAction(odp.NewOutputAction(vport.ID))
}
}
return *dpp, flow, true
}