netdev - Re: Is this 32-bit NCM?

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Message-ID: <87lhmqp400.fsf@nemi.mork.no>
Date:	Tue, 02 Dec 2014 14:37:03 +0100
From:	Bjørn Mork <bjorn@...k.no>
To:	Enrico Mioso <mrkiko.rs@...il.com>
Cc:	Kevin Zhu <Mingying.Zhu@...iocodes.com>,
	Eli Britstein <Eli.Britstein@...iocodes.com>,
	Alex Strizhevsky <alexxst@...il.com>,
	Midge Shaojun Tan <ShaojunMidge.Tan@...iocodes.com>,
	"youtux\@gmail.com" <youtux@...il.com>,
	"linux-usb\@vger.kernel.org" <linux-usb@...r.kernel.org>,
	"netdev\@vger.kernel.org" <netdev@...r.kernel.org>
Subject: Re: Is this 32-bit NCM?

Enrico Mioso <mrkiko.rs@...il.com> writes:

> ... but out of curiosity: are NCM specs allowing to change order of things in 
> the package or not?
> This is not to start philosofical falames or something, but to understand 
> better how things work. And, if they do: how much arbitrarily?

Only the NTB header has a fixed location. The rest can be anywhere and
in any order. Quoting from section 3 Data Transport:

  "Within any given NTB, the NTH always must be first; but the other
   items may occur in arbitrary order."


Bjørn
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