Re: A question on Zero Copy

[julian_satran@il.ibm.com]

Randall,

What you want depends on what end and what application you are looking at.
A target (in most cases) can live with A  while a complex initiator (host,
not an appliance) will want B.

Julo





> Does the iSCSI layer want:
>
> A) Plain Zero copy, where the upper layer (iSCSI) asks
>    to read the next available "message" from the wire
>    into a buffer passed to the transport by iSCSI?
>
> <OR>
>
> B) A directed Zero Copy, where the upper layer (iSCSI) asks
>    to read a particular request to a specific buffer?
>

Randall,