DLT for LLCP

[mike wakerly <mikey () google com>]

Hi there!

I'd like to request a new encapsulation type for NFC Logical Link
Control Protocol (LLCP) [1].

LLCP is a layer 2 protocol for near-field communication (NFC) devices.
 It is used in Android [2] (among other platforms), and there are a
few usermode implementations ([3], [4]) for various host adapters.

A new encapsulation type is needed for reasons similar to i2c and
bluetooth.  Hosts need to record frame directionality in addition to
raw frame data.  As an example, a psuedo-header prepended to
individual LLCP frames recorded in this format might look like this:

  struct llcp_phdr {
    guint16 adapter;  /* Adapter number, typically 0. */
    guint16 flags;    /* Direction flag (TX/RX) and future use. */
  };

Can you allocate a new DLT_ for this?

thanks!
mike

References:
  [1] http://www.nfc-forum.org/specs/spec_list/
  [2] http://developer.android.com/guide/topics/nfc/nfc.html
  [3] https://launchpad.net/nfcpy
  [4] http://www.libnfc.org/documentation/introduction
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