[tcpdump-workers] Link type FlexRay

Guy Harris guy at alum.mit.edu
Wed Jan 20 14:50:54 EST 2016


On Jan 20, 2016, at 7:38 AM, Guenter Ebermann <guenter.ebermann at googlemail.com> wrote:

> I have a first draft of the packet-specification available:
> https://bugs.wireshark.org/bugzilla/attachment.cgi?id=14264

So it looks as if the extra low-level framing bits aren't included; is that correct?

The Frame Header is 16 bits; do bits 15 through 8 appear in the first octet, with bits 7 through 0 being in the second octet?  (I'm assuming that, in the octet with bits 15-8, bit 15 is the high-order bit and bit 8 is the low-order bit, and that, in the octet with bits 7-0, bit 7 is the high-order bit and bit 0 is the low-order bit.)

Similarly, the Payload preamble indicator is 24 bits; are the three octets of the PPI, in order, the octet with bits 23-16, the octet with bits 15-8, and the octet with bits 7-0?

Presumably, as the extra low-level framing bits aren't included, the Data 0 through Data n bytes just appear as octets following the PPI.


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