Re: [RFC][PATCH 1/1] cxgb3i: cxgb3 iSCSI initiator

[Tom Tucker]

David Miller wrote:
> From: Tom Tucker <tom@xxxxxxxxxxxxxxxxxxxxx>
> Date: Wed, 13 Aug 2008 20:26:51 -0500
>
>   
> > Can you explain how this "information" somehow doesn't qualify as 
> > "state". Doesn't the next expected sequence number at the very least 
> > need to be updated? una? etc...?
> >
> > Could you also include the "non-state-full" information necessary to do 
> > iSCSI header digest validation, data placement, and marker removal? 
> >     
>
> It's stateless because the full packet traverses the real networking
> stack and thus can be treated like any other packet.
>
> The data placement is a side effect that the networking stack can
> completely ignore if it chooses to.
> --
> To unsubscribe from this list: send the line "unsubscribe netdev" in
> the body of a message to majordomo@xxxxxxxxxxxxxxx
> More majordomo info at  http://vger.kernel.org/majordomo-info.html
>   
Ok. Maybe we're getting somewhere here ... or at least I am :-)

I'm not trying to be pedantic here but let me try and restate what I 
think you said above:

- The "header" traverses the real networking stack
- The "payload" is placed either by by the hardware if possible or by 
the native stack if on the exception path
- The "header" may aggregate multiple  PDU (RSO)
- Data ready indications are controlled entirely by the software/real 
networking stack

Thanks,
Tom

--
To unsubscribe from this list: send the line "unsubscribe linux-kernel" in
the body of a message to majordomo@xxxxxxxxxxxxxxx
More majordomo info at  http://vger.kernel.org/majordomo-info.html
Please read the FAQ at  http://www.tux.org/lkml/