On Wed, Mar 29, 2000 at 12:24:27AM +0100, Alan Cox wrote:
> > machine with a NICs on to LANs. I need to brigde traffic between these
> > interfaces, but I basicly need to manipulate it first. And I need
> > promisc-mode because I also have to listen to everything on this
> > network. The protocol (a level up from ethernet) is not a common one
> > (long and boring story), so I really need access to the raw frames for
> > both reading and writing. I've looked at netlink, but there doesn't
> > seem to be access to the ethernet-frames.
> >
> > My question is (naturally) how?
>
> Not in userspace if its any kind of real traffic volume. The context
> switches and copying will kill you
Everything's relative...
I can do more than 300k/sec via userspace on a P200, and my code is horribly
bloated C++ :)
Have fun,
Avery
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