Thanks for the reply.
As you suggest, I cannot find nfm-nraw.so on my system, so it apparently
wasn't shipped. 
There is a nfm-bpf.so, but use nfm-bpf.so suggests raw IP (not raw
Ethernet) only. 
Is it correct that io-pkt.so is from the next generation protocol stack,
which means it currently isn't possible to send raw Ethernet under QNX?
That is, the only possibility would be to use the Network DDK to attach
to io-net?

Thomas

On Mon, 2007-11-19 at 10:17 -0500, Sean Boudreau wrote:
> On Sat, Nov 17, 2007 at 10:31:44AM -0500, Thomas Buschmann wrote:
> > How can I send a plain (raw) ethernet packet under QNX? Since want to
> > send packets with a small payload at a high frequency, using IP/UDP
> > would lead to a unacceptably high overhead. 
> > 
> > Under LINUX this can be done using 
> >  s = socket(AF_PACKET, SOCK_RAW, htons(ETH_P_ALL));
> > Since there seems to be no AF_PACKET under QNX, so this obviously
> > doesn't work.
> > 
> > I couldn't find anything in the documentation except:
> > " SOCK_RAW -- provides access to internal network protocols and
> > interfaces. Available only to the superuser, this type isn't described
> > here."
> > 
> > Is it described anywhere else in the documentation? I would be thankful
> > for any hint as to how this can be done under QNX.
> 
> 
> In io-pkt this can be done with bpf / libpcap.
> In io-net the closest thing we had was nfm-nraw.so
> which allowed one to open() / read() / write() on
> /dev/io-net/enX.  nraw wasn't shipped AFAIK.
> 
> -seanb
> 
> _______________________________________________
> General
> http://community.qnx.com/sf/go/post2748
> 
-- 
Dipl.-Ing. Thomas Buschmann

Technische Universitaet Muenchen
Lehrstuhl fuer Angewandte Mechanik
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