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Radiotap information is now stored in the `libwifi_frame` struct, and will
be kept automatically in `libwifi_frame.radiotap_info` for the lifecycle of
said frame, if it is present.
A new flag has been added for the frame for use with `libwifi_frame.flags`
to detect if the radiotap info is present: `LIBWIFI_FLAGS_RADIOTAP_PRESENT`.
The frame parser will now automatically calculate the band and center channel
from radiotap data, and will store them in `libwifi_radiotap_info.channel.center`
and `libwifi_radiotap_info.channel.band`.
Four new flags have been added for use with the new radiotap band field:
- `LIBWIFI_RADIOTAP_BAND_2GHZ`
- `LIBWIFI_RADIOTAP_BAND_5GHZ`
- `LIBWIFI_RADIOTAP_BAND_6GHZ`
- `LIBWIFI_RADIOTAP_BAND_900MHZ`
These can be used with a binary AND:
`if (rtap.channel.band & LIBWIFI_RADIOTAP_BAND_6GHZ) { }`
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