tcpdump mailing list archives
Re: Two DLT Requests For Bluetooth RF Captures
From: Chris Kilgour <techie () whiterocker com>
Date: Fri, 14 Feb 2014 19:41:58 -0800
On 02/14/2014 04:46 PM, Guy Harris wrote:
What is the "nanosecond offset to pcap timestamp"? pcap-ng lets you specify the resolution of time stamps, and even pcap lets you, at least with newer versions of libpcap and Wireshark, specify nanosecond resolution with a different magic number.
The motivation was classic pcap. I was up on pcap-ng, but did not realize the pcap format has an updated variant with higher-precision timestamps. So I have removed the ns field from the pseudoheaders.
Translating them into the style in the pages under http://www.tcpdump.org/linktypes would be helpful. It avoids worrying about C/C-derived-language data structure names - or anything *else* about C and languages derived from it - and also makes it easier to add the link-layer header type to the Web site.
Okay, I will do this. Are the linktype description pages developed with any tools or templates, or just written as HTML (with the website's CSS applied)? I also have a question prompted by reviewing some sample pages like [1] and [2]. It seems some folks choose little-endian for multi-byte fields and others choose network/big-endian. It there a preference here? Is it acceptable to define these fields as having the same endianness as the pcap file header (or pcap-ng section header)? [1] http://www.tcpdump.org/linktypes/LINKTYPE_NG40.html [2] http://www.tcpdump.org/linktypes/LINKTYPE_NETANALYZER.html _______________________________________________ tcpdump-workers mailing list tcpdump-workers () lists tcpdump org https://lists.sandelman.ca/mailman/listinfo/tcpdump-workers
Current thread:
- Two DLT Requests For Bluetooth RF Captures Chris Kilgour (Feb 14)
- Re: Two DLT Requests For Bluetooth RF Captures Guy Harris (Feb 14)
- Re: Two DLT Requests For Bluetooth RF Captures Guy Harris (Feb 14)
- Re: Two DLT Requests For Bluetooth RF Captures Chris Kilgour (Feb 16)
- Re: Two DLT Requests For Bluetooth RF Captures Guy Harris (Feb 16)
- Re: Two DLT Requests For Bluetooth RF Captures Chris Kilgour (Feb 16)
- Re: Two DLT Requests For Bluetooth RF Captures Guy Harris (Feb 16)
- Re: Two DLT Requests For Bluetooth RF Captures Guy Harris (Feb 14)
- Re: Two DLT Requests For Bluetooth RF Captures Guy Harris (Feb 16)
- Re: Two DLT Requests For Bluetooth RF Captures Guy Harris (Feb 14)
- Re: Two DLT Requests For Bluetooth RF Captures Guy Harris (Feb 16)
- Re: Two DLT Requests For Bluetooth RF Captures Guy Harris (Feb 16)
- Re: Two DLT Requests For Bluetooth RF Captures Guy Harris (Feb 18)
- Re: Two DLT Requests For Bluetooth RF Captures Chris Kilgour (Feb 18)