[tcpdump-workers] Link type FlexRay

Guy Harris guy at alum.mit.edu
Tue Jan 19 21:00:16 EST 2016


On Jan 19, 2016, at 5:50 PM, Guy Harris <guy at alum.mit.edu> wrote:

> OK, so the new format is that the frame begins with a measurement header, which is followed by the bitstream from the bus?
> 
> Is the bitstream from the bus padded in that fashion?
> 
> From the Wikipedia article on FlexRay (the first of the ISO standards the article mentions costs CHF 118, so I'm not going to buy them immediately):
> 
> 	https://en.wikipedia.org/wiki/FlexRay
> 
> a frame consists of some framing bits at each end of the frame, with each octet in the frame containing 2 bits of per-byte framing followed by the 8 bits of the octet.  Would LINKTYPE_FLEXRAY/DLT_FLEXRAY frames include all of those bits?  If so, where does the padding appear?

(I'm assuming here that one packet in a pcap or pcapng file with type LINKTYPE_FLEXRAY corresponds to a FlexRay frame, of the sort described at

	http://www.ni.com/white-paper/3352/en/#toc4


under "Frame Format".)


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