Support for zero copy sockets

[Kevin Day]

> 
> I'd like to reintroduce a zero copy socket IO method for at least
> write that doesn't rely on sendfile.
> 
> The zero-copy socket page flipping thing was interesting because IIRC
> tried to work for both sending and receiving socket data. Doing that
> via an API would be nicer.
> 
> So, if people have an idea for how it could be done / what the API
> looks like then I'm all ears.
> 


If FreeBSD could be API compatible with Linux’s splice(2) and/or tee(2), that would probably make a lot of people happy.

http://linux.die.net/man/2/splice


(I know that’s not exactly what you’re talking about, but while we’re on the subject)