// parseAttributes parses netlink attributes into a StationInfo's fields.
func (info *StationInfo) parseAttributes(attrs []netlink.Attribute) error {
for _, a := range attrs {
switch a.Type {
case nl80211.StaInfoConnectedTime:
// Though nl80211 does not specify, this value appears to be in seconds:
// * @NL80211_STA_INFO_CONNECTED_TIME: time since the station is last connected
info.Connected = time.Duration(nlenc.Uint32(a.Data)) * time.Second
case nl80211.StaInfoInactiveTime:
// * @NL80211_STA_INFO_INACTIVE_TIME: time since last activity (u32, msecs)
info.Inactive = time.Duration(nlenc.Uint32(a.Data)) * time.Millisecond
case nl80211.StaInfoRxBytes64:
info.ReceivedBytes = nlenc.Uint64(a.Data)
case nl80211.StaInfoTxBytes64:
info.TransmittedBytes = nlenc.Uint64(a.Data)
case nl80211.StaInfoSignal:
// Converted into the typical negative strength format
// * @NL80211_STA_INFO_SIGNAL: signal strength of last received PPDU (u8, dBm)
info.Signal = int(a.Data[0]) - math.MaxUint8
case nl80211.StaInfoRxPackets:
info.ReceivedPackets = nlenc.Uint32(a.Data)
case nl80211.StaInfoTxPackets:
info.TransmittedPackets = nlenc.Uint32(a.Data)
case nl80211.StaInfoTxRetries:
info.TransmitRetries = nlenc.Uint32(a.Data)
case nl80211.StaInfoTxFailed:
info.TransmitFailed = nlenc.Uint32(a.Data)
case nl80211.StaInfoBeaconLoss:
info.BeaconLoss = nlenc.Uint32(a.Data)
case nl80211.StaInfoRxBitrate, nl80211.StaInfoTxBitrate:
rate, err := parseRateInfo(a.Data)
if err != nil {
return err
}
// TODO(mdlayher): return more statistics if they end up being
// generally useful
switch a.Type {
case nl80211.StaInfoRxBitrate:
info.ReceiveBitrate = rate.Bitrate
case nl80211.StaInfoTxBitrate:
info.TransmitBitrate = rate.Bitrate
}
}
// Only use 32-bit counters if the 64-bit counters are not present.
// If the 64-bit counters appear later in the slice, they will overwrite
// these values.
if info.ReceivedBytes == 0 && a.Type == nl80211.StaInfoRxBytes {
info.ReceivedBytes = uint64(nlenc.Uint32(a.Data))
}
if info.TransmittedBytes == 0 && a.Type == nl80211.StaInfoTxBytes {
info.TransmittedBytes = uint64(nlenc.Uint32(a.Data))
}
}
return nil
}
// parseAttributes parses netlink attributes into an Interface's fields.
func (ifi *Interface) parseAttributes(attrs []netlink.Attribute) error {
for _, a := range attrs {
switch a.Type {
case nl80211.AttrIfindex:
ifi.Index = int(nlenc.Uint32(a.Data))
case nl80211.AttrIfname:
ifi.Name = nlenc.String(a.Data)
case nl80211.AttrMac:
ifi.HardwareAddr = net.HardwareAddr(a.Data)
case nl80211.AttrWiphy:
ifi.PHY = int(nlenc.Uint32(a.Data))
case nl80211.AttrIftype:
// NOTE: InterfaceType copies the ordering of nl80211's interface type
// constants. This may not be the case on other operating systems.
ifi.Type = InterfaceType(nlenc.Uint32(a.Data))
case nl80211.AttrWdev:
ifi.Device = int(nlenc.Uint64(a.Data))
case nl80211.AttrWiphyFreq:
ifi.Frequency = int(nlenc.Uint32(a.Data))
}
}
return nil
}