contiki-os/contiki — pull request #631 by nfi (2014-04-11 16:40:39+00:00)
Title: Added function to framer that returns the estimated header length

Added function to framer that returns the estimated header length if the framer would create a header with the current packet information.

This allows sicslowpan.c to calculate the max payload size without consuming a sequence number in framer-802154.c or clearing/restoring the packet information.