func (self capture) GenlListen(msg nlgo.GenlMessage) {
switch msg.Header.Type {
case syscall.NLMSG_DONE:
log.Print("Init DONE")
case syscall.NLMSG_ERROR:
log.Print(nlgo.NlMsgerr(msg.NetlinkMessage))
default:
if attrs, err := nlgo.Nl80211Policy.Parse(msg.Body()); err != nil {
panic(err)
} else {
log.Printf("NL80211_CMD_%s attrs=%s", nlgo.NL80211_CMD_itoa[msg.Genl().Cmd], attrs)
}
}
}
func (self NamedPort) GenlListen(ev nlgo.GenlMessage) {
if ev.Family.Name != "nl80211" {
return
}
switch ev.Genl().Cmd {
case nlgo.NL80211_CMD_FRAME:
if attrs, err := nlgo.Nl80211Policy.Parse(ev.Body()); err != nil {
log.Print(err)
} else if frame, err := FrameFromNlAttr(attrs.(nlgo.AttrMap), self.mac, self.fragmentId); err != nil {
log.Print(err)
} else {
self.ingress <- frame
self.fragmentId++
}
case nlgo.NL80211_CMD_FRAME_TX_STATUS:
var cookie uint64
var ack bool
if attrs, err := nlgo.Nl80211Policy.Parse(ev.Body()); err != nil {
log.Print(err)
} else if amap, ok := attrs.(nlgo.AttrMap); !ok {
log.Print("nl80211 policy did not return attr map")
} else {
cookie = uint64(amap.Get(nlgo.NL80211_ATTR_COOKIE).(nlgo.U64))
if value := amap.Get(nlgo.NL80211_ATTR_ACK); value != nil {
ack = true
}
}
func() {
self.lock.Lock()
defer self.lock.Unlock()
if status, ok := self.txStatus[cookie]; ok {
if !ack {
status <- fmt.Errorf("NL80211_ATTR_ACK missing")
}
close(status)
delete(self.txStatus, cookie)
} else {
log.Print("unhandled tx cookie")
}
}()
}
}