netdev - Re: Fwd: Re: [PATCH] iSCSI fix endieness of digest to be network byte order

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Message-ID: <20071108104040.GA16312@gondor.apana.org.au>
Date:	Thu, 8 Nov 2007 18:40:40 +0800
From:	Herbert Xu <herbert@...dor.apana.org.au>
To:	FUJITA Tomonori <fujita.tomonori@....ntt.co.jp>
Cc:	bhalevy@...asas.com, linux-crypto@...r.kernel.org,
	michaelc@...wisc.edu, netdev@...r.kernel.org
Subject: Re: Fwd: Re: [PATCH] iSCSI fix endieness of digest to be network byte order

On Thu, Nov 08, 2007 at 05:04:09PM +0900, FUJITA Tomonori wrote:
>
> I wonder why crc32c isn't used directly while crc32 is used directly
> since they vary by only the polynomial.

It's because iSCSI uses it with scatterlists.  The crypto layer
provides a nice interface for that while using it directly would
require the user to do the scatterlist walk.

> Using crc32c directly might enable us to kill net/sctp/crc32c.c and
> merge lib/crc32.c and lib/libcrc32c?

I'm pretty sure we can kill net/sctp/crc32c.c today by converting
it over to use the crypto interface.

Cheers,
-- 
Visit Openswan at http://www.openswan.org/
Email: Herbert Xu ~{PmV>HI~} <herbert@...dor.apana.org.au>
Home Page: http://gondor.apana.org.au/~herbert/
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