tcpdump mailing list archives
DLT request for EBHSCR
From: <Guenter.Ebermann () elektrobit com>
Date: Wed, 8 Aug 2018 13:26:04 +0000
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 _______________________________________________ tcpdump-workers mailing list tcpdump-workers () lists tcpdump org https://lists.sandelman.ca/mailman/listinfo/tcpdump-workers
Current thread:
- DLT request for EBHSCR Guenter.Ebermann (Aug 08)
- Re: DLT request for EBHSCR Michael Richardson (Aug 08)
- Re: DLT request for EBHSCR Guy Harris (Aug 08)
- Re: DLT request for EBHSCR Guenter.Ebermann (Sep 24)
- Re: DLT request for EBHSCR Guy Harris (Sep 24)
- Re: DLT request for EBHSCR Guenter.Ebermann (Sep 24)
- Re: DLT request for EBHSCR Guy Harris (Sep 24)
- Re: DLT request for EBHSCR Guenter.Ebermann (Sep 25)
- Re: DLT request for EBHSCR Guy Harris (Aug 08)
- Re: DLT request for EBHSCR Michael Richardson (Aug 08)