Hello everyone,
thought that this might be of some interest also for the Ethereal community:
Today the RTnet project has released a new version which now allows
capturing of Ethernet packets on a hard real-time Linux box (RTAI). This
features increases the guaranteed precision of packet time stamps by
several magnitudes, typical numbers are about 10-20 microseconds on a
suitable x86 hardware.
The packets are received by a real-time enabled Ethernet driver in the
RTOS context and then copied to a read-only shadow network devices in
Linux context (note that the copy step is required to preserve real-time
contraints). Also packets sent by the local RTnet stack are captured.
The shadow device can then be addressed by any standard capturing tool
like Ethereal, tcpdump, etc.
RTnet is a hard real-time Ethernet stack based on Linux/RTAI. It is
released as Open Source under GPL terms. A RTnet protocol plugin is part
of Ethereal since last year (BTW, Erwin's latest patch is still not
applied... ;)). See http://www.rts.uni-hannover.de/rtnet for further
information.
Greetings,
Jan
- RTnet project manager -
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