Wireshark · Wireshark-dev: Re: [Wireshark-dev] pcap-ng support

[Ulf Lamping <ulf.lamping@xxxxxx>]

Gianluca Varenni schrieb:
> FYI today I tried opening a pcap-ng file with wireshark rev 24118, and 
> it sort of worked.
>
> What works:
> - the first file I opened was a 50+MB file generated with NTAR. Real 
> ethernet packets coming from a custom board. Wireshark opened the 
> trace without any problem, and the decoded packets made perfectly 
> sense. YAY!
Nice!
> What doesn't work:
> - timestamps are wrong. There are two problems here:
>  1. the IDB option for the timestamp precision is not decoded, and I 
> was generating timestamps with nanosecond precision.
No wonder, the corresponding line in the code says: /* XXX - convert 
timestamps into nsecs */ ;-)
>  2. timestamps are not in the libpcap fashion (seconds and 
> microseconds, or seconds and nanoseconds). It's a single 64bit 
> quantity that is split into high and low 32bits.
The timestamps currently won't work, but shouldn't be too hard to fix.

I'll have a look ...

Regards, ULFL

P.S: The FCS is also not decoded, Wireshark will internally always 
handle pcapng as: "don't know if FCS is there"