From: Andi Kleen <[EMAIL PROTECTED]> Date: Wed, 1 Feb 2006 23:55:11 +0100
> On Wednesday 01 February 2006 21:26, Jeff Garzik wrote: > > Andi Kleen wrote: > > > But I don't think Van's design is supposed to be exposed to user space. > > > > It is supposed to be exposed to userspace AFAICS. > > Then it's likely insecure and root only, unless he knows some magic > that we don't. > > I hope it's not just PF_PACKET mmap rings with a user space TCP library. Yes, that's it. If the user screws up the TCP connection and corrupts his data why should the kernel care? > I mean the Linux implementation is in the kernel, but in user context. Right, but prequeue doesn't go nearly far enough. We still do up to 5 demuxes on the input path (protocol, route, IPSEC, netfilter, socket) plus the queueing at the softint layer. That's rediculious and we've always understood this, and Van has presented a way to kill this stuff off. But even if you don't like the userspace stuff, we don't necessarily have to go there, we can just demux directly to sockets in the kernel TCP stack and then revisit the userspace idea before committing to it. - To unsubscribe from this list: send the line "unsubscribe netdev" in the body of a message to [EMAIL PROTECTED] More majordomo info at http://vger.kernel.org/majordomo-info.html
