func unpackDest(service Service, attrs nlgo.AttrMap) (Dest, error) {
var dest Dest
var addr []byte
for _, attr := range attrs.Slice() {
switch attr.Field() {
case IPVS_DEST_ATTR_ADDR:
addr = ([]byte)(attr.Value.(nlgo.Binary))
case IPVS_DEST_ATTR_PORT:
dest.Port = unpackPort(attr.Value.(nlgo.U16))
case IPVS_DEST_ATTR_FWD_METHOD:
dest.FwdMethod = (FwdMethod)(attr.Value.(nlgo.U32))
case IPVS_DEST_ATTR_WEIGHT:
dest.Weight = (uint32)(attr.Value.(nlgo.U32))
case IPVS_DEST_ATTR_U_THRESH:
dest.UThresh = (uint32)(attr.Value.(nlgo.U32))
case IPVS_DEST_ATTR_L_THRESH:
dest.LThresh = (uint32)(attr.Value.(nlgo.U32))
case IPVS_DEST_ATTR_ACTIVE_CONNS:
dest.ActiveConns = (uint32)(attr.Value.(nlgo.U32))
case IPVS_DEST_ATTR_INACT_CONNS:
dest.InactConns = (uint32)(attr.Value.(nlgo.U32))
case IPVS_DEST_ATTR_PERSIST_CONNS:
dest.PersistConns = (uint32)(attr.Value.(nlgo.U32))
}
}
if addrIP, err := unpackAddr(addr, service.Af); err != nil {
return dest, fmt.Errorf("ipvs:Dest.unpack: addr: %s", err)
} else {
dest.Addr = addrIP
}
return dest, nil
}
func unpackInfo(attrs nlgo.AttrMap) (info Info, err error) {
for _, attr := range attrs.Slice() {
switch attr.Field() {
case IPVS_INFO_ATTR_VERSION:
info.Version = (Version)(attr.Value.(nlgo.U32))
case IPVS_INFO_ATTR_CONN_TAB_SIZE:
info.ConnTabSize = (uint32)(attr.Value.(nlgo.U32))
}
}
return
}
func unpackService(attrs nlgo.AttrMap) (Service, error) {
var service Service
var addr nlgo.Binary
var flags nlgo.Binary
for _, attr := range attrs.Slice() {
switch attr.Field() {
case IPVS_SVC_ATTR_AF:
service.Af = (Af)(attr.Value.(nlgo.U16))
case IPVS_SVC_ATTR_PROTOCOL:
service.Protocol = (Protocol)(attr.Value.(nlgo.U16))
case IPVS_SVC_ATTR_ADDR:
addr = attr.Value.(nlgo.Binary)
case IPVS_SVC_ATTR_PORT:
service.Port = unpackPort(attr.Value.(nlgo.U16))
case IPVS_SVC_ATTR_FWMARK:
service.FwMark = (uint32)(attr.Value.(nlgo.U32))
case IPVS_SVC_ATTR_SCHED_NAME:
service.SchedName = (string)(attr.Value.(nlgo.NulString))
case IPVS_SVC_ATTR_FLAGS:
flags = attr.Value.(nlgo.Binary)
case IPVS_SVC_ATTR_TIMEOUT:
service.Timeout = (uint32)(attr.Value.(nlgo.U32))
case IPVS_SVC_ATTR_NETMASK:
service.Netmask = (uint32)(attr.Value.(nlgo.U32))
}
}
if addrIP, err := unpackAddr(addr, service.Af); err != nil {
return service, fmt.Errorf("ipvs:Service.unpack: addr: %s", err)
} else {
service.Addr = addrIP
}
if err := unpack(flags, &service.Flags); err != nil {
return service, fmt.Errorf("ipvs:Service.unpack: flags: %s", err)
}
return service, nil
}
func FrameFromNlAttr(attrs nlgo.AttrMap, mac []byte, fragmentId uint8) (Frame, error) {
freq := uint32(attrs.Get(nlgo.NL80211_ATTR_WIPHY_FREQ).(nlgo.U32))
freqValue := make([]byte, 3)
binary.LittleEndian.PutUint16(freqValue, uint16(freq))
oob := oxmExperimenter{
Experimenter: oxm.STRATOS_EXPERIMENTER_ID,
Field: oxm.STRATOS_OXM_FIELD_RADIOTAP,
Type: oxm.STROXM_RADIOTAP_CHANNEL,
Value: freqValue,
}.Bytes()
if t := attrs.Get(nlgo.NL80211_ATTR_RX_SIGNAL_DBM); t != nil {
oob = append(oob, oxmExperimenter{
Experimenter: oxm.STRATOS_EXPERIMENTER_ID,
Field: oxm.STRATOS_OXM_FIELD_RADIOTAP,
Type: oxm.STROXM_RADIOTAP_DBM_ANTSIGNAL,
Value: []byte{uint8(t.(nlgo.U32))},
}.Bytes()...)
}
if data, err := makeLwapp([]byte(attrs.Get(nlgo.NL80211_ATTR_FRAME).(nlgo.Binary)), mac, fragmentId); err != nil {
return Frame{}, err
} else {
return Frame{
Data: data,
Oob: oob,
}, nil
}
}
