Request for new DLT for RFTAP

[Jonathan Brucker <jonathan.brucke () gmail com>]

Hi!

I am posting to request a value for DLT_RFTAP and LINKTYPE_RFTAP.

RFtap is a simple protocol designed to provide Radio Frequency (RF)
metadata about packets, such as:

* Accurate signal and noise power
* Accurate timing and phase information
* Accurate Carrier and Doppler frequency of every packet, and more.

https://rftap.github.io/specifications/

RFtap protocol support is already integrated into Wireshark.

Thanks,
Jonathan Brucker.


RFtap Packet Structure

+---------------------------+
|           Magic           |
|         (4 Octets)        |
+---------------------------+
|          Length32         |
|         (2 Octets)        |
+---------------------------+
|           Flags           |
|         (2 Octets)        |
+---------------------------+
|   RFtap optional fields   |
.                           .
.                           .
.                           .
+---------------------------+
|          Payload          |
.                           .
.                           .
.                           .


Short Description:

All values are little-endian.

The magic field is a fixed signature used to identify the packet. The
signature is: 52 46 74 61 (hex), i.e. the ASCII sequence "RFta".

The length32 field indicates how many 32-bit words are used by the
entire RFtap header including the optional fields.

The flags field is a bitfield indicating the presence of following RFtap
fields (similar to radiotap "present" flags), or in few cases directly
the value of boolean fields. The bitfield ordering starts from LSB.

Payload:

The encapsulated payload follows after the RFtap header. Interpretation
of the payload is dependent on RFtap fields, specifically the RFtap
Data Link Type (DLT) field.
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