Hi,
The Elektrobit High Speed Capture and Replay (EBHSCR) protocol is produced by a
PCIe Card for interfacing high speed automotive interfaces.
We write the captured data into a pcap file, using a user specific DLT.
But we want to upstream our dissector, thus I want to request an official DLT.
Please find the protocols header description here:
0 1 2 3
0 1 2 3 4 5 6 7 8 9 0 1 2 3 4 5 6 7 8 9 0 1 2 3 4 5 6 7 8 9 0 1
+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
| Major number |Sl.| Channel |Version| Status |
+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
| Length |
+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
| |
+ Start timestamp +
| |
+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
| |
+ Stop timestamp +
| |
+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
| CRC |
+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
| Reserved |
+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
All multi-byte values in the header are big endian.
Major number: type of the frame captured (e.g. camera, BroadR-Reach, .)
Sl.: Slot 0-3
Channel: Each slot has sub-channels: 0-63
Version: set to 0
Everything bedsides these four bits and the Length may change
with a new Version
Status: flags used for error reporting, specific for each major number
Length: length in bytes of the frame following this header,
not including header
Start timestamp: nanosecond counter, taken when we received the start of frame
Stop timestamp: nanosecond counter, taken when we received the end of frame
CRC: CRC-32C (Castagnoli) of frame bytes, not including header
Reserved: set to 0
After the header comes a captured frame-payload. Its content depends on the
major number in the header.
Do you need any more information?
Thanks,
Günter Ebermann
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