On Fri, 2003-09-19 at 09:44, DavidHo@nanometrics.ca wrote: > Hi, > > I am currently given the task to hook up a proprietory bus to the IP stack. > What this amounts to is having to replace the hardware driver and the > ethernet header to use our own hardware and our own (nmxbus) header to > carry the IP/ARP payload. The next hurdle I'm running into is testing ARP > with the new header. The first idea I have come up with is creating two > nmxbus interfaces on the same machine that will simple read and write to > memory to give a virtual connection between the two interfaces. The two > interface will be given addresses in the same subnet to be able to exchange > ARP messages. What I'm struggling with is whether there is a way I can > force the packet to go out a specific interface to the other interface. > The natural behaviour of the kernel is simply directing the packet to the > loopback interface. > > Anyone has any insight on this? > > Regards, > > David Ho > Nanometrics Inc. > > - > : send the line "unsubscribe linux-net" in > the body of a message to majordomo@vger.kernel.org > More majordomo info at http://vger.kernel.org/majordomo-info.html Eight yrs back, when I was at USC's Information Sciences Institute (www.isi.edu), a part of the work I did involved writing the RTP and RTCP modules for a protocol testbed known as VINT (Virtual InterNetwork Testbed @ http://www.isi.edu/nsnam/vint/). Its a mixture of C++ and Tcl: C++ to model the network elements, including protocols, and Tcl to control the simulations. If you are looking at modelling/studying your proprietary bus and its behaviour, VINT might be useful. For me, VINT was a good tool cos it let me focus on the protocol behaviour rather than bit level device driver behaviour. I am sure it has morphed into something more substantial since when I last worked on it. -- Ranjeet Shetye Senior Software Engineer Zultys Technologies Ranjeet dot Shetye2 at Zultys dot com http://www.zultys.com/ The views, opinions, and judgements expressed in this message are solely those of the author. The message contents have not been reviewed or approved by Zultys. - : send the line "unsubscribe linux-net" in the body of a message to majordomo@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html
