Re: TCP RDMA option to accelerate NFS, CIFS, SCSI, etc.

[Alan Cox <alan@lxorguk.ukuu.org.uk>]

> Gb/s it requires some innovation and lots of silicon. The RDMA option makes
> it possible at a far lower price. And the zero copy it enables might go
> deep into the application space as it is only an annotation on packets.

I am not convinced the amount of silicon changes between the two. The
RDMA id make be faked by an attacker so must still be verified. 

Va Jacobson proposed and to an extent implemented a system where the user
context does all the TCP work. In that sort of situation and with a more
sensible API than the BSD socket one you dont appear to need a lot of silicon,
in fact the worst case is the wildcard.

Alan