tcpdump mailing list archives

Re: DLT for Bluetooth Low Energy


From: Guy Harris <guy () alum mit edu>
Date: Thu, 13 Jun 2013 13:55:02 -0700


On Jun 13, 2013, at 12:52 PM, "dragorn" <dragorn () kismetwireless net> wrote:

On Thu, Jun 13, 2013 at 11:51:41AM -0700, Guy Harris wrote:

On Jun 13, 2013, at 11:13 AM, "dragorn" <dragorn () kismetwireless net> wrote:

On Thu, Jun 13, 2013 at 11:10:02AM -0700, Guy Harris wrote:


Do LINKTYPE_BLUETOOTH_LE_LL/DLT_BLUETOOTH_LE_LL sound like reasonable names?

Yep, those sound fine!

OK, I've assigned 251 for them.

Fantastic!

So do LINKTYPE_BLUETOOTH_LE_LL/DLT_BLUETOOTH_LE_LL packets include the preamble octet and the CRC?

Got another request - can we get one for _BLUETOOTH_BB as well, for
standard bluetooth baseband data?  Spec is at :

https://www.bluetooth.org/docman/handlers/downloaddoc.ashx?doc_id=229737

Baseband is at page 354

Those fields don't end on octet boundaries; are the bits stuffed into octets disregarding octet boundaries?

The spec says that "data fields generated internally at baseband level, such as the packet header fields and payload 
header length, shall be transmitted with the LSB first"; are the bits stored in octets as they're received and, if so, 
is the first bit of the packet the MSB or the LSB of the first bit?

Or are the packets not presented in quite as raw a fashion?
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