From: Jeff Garzik <jgarzik@pobox.com>
To: Luben Tuikov <luben_tuikov@adaptec.com>
Cc: Kyle Moffett <mrmacman_g4@mac.com>,
Andre Hedrick <andre@linux-ide.org>,
"David S. Miller" <davem@davemloft.net>,
willy@w.ods.org, patmans@us.ibm.com, ltuikov@yahoo.com,
linux-kernel@vger.kernel.org, akpm@osdl.org, torvalds@osdl.org,
linux-scsi@vger.kernel.org,
James Bottomley <James.Bottomley@steeleye.com>
Subject: Re: I request inclusion of SAS Transport Layer and AIC-94xx into the kernel
Date: Mon, 03 Oct 2005 12:01:48 -0400 [thread overview]
Message-ID: <434155EC.6080100@pobox.com> (raw)
In-Reply-To: <43413D9C.2050904@adaptec.com>
Luben Tuikov wrote:
> On 09/30/05 20:33, Jeff Garzik wrote:
>>This is a misrepresentation. -We- understand the stuff you have posted.
>>
>>But you continue to demonstrate that you simply do not understand the
>>existing SCSI core code.
>>
>>The SAS transport class supports commonality across all SAS
>>implementations. This includes both MPT and Adaptec 94xx.
>>
>>SAS transport class + libsas supports software implementations of SAS,
>>including transport layer management. This includes Adaptec 94xx but
>>NOT MPT.
>
>
> You almost get it right, other than the layering infrastructure.
>
> The SAS Transport Layer is a layer in its own right. It is not
> a "libsas".
Different open transport hardware will expose the underlying network at
different levels.
Hardware A might provide direct access to SSP and IDENTIFY/CONNECT frame
handling, while Hardware B may handle that internally, while still
providing full SMP access for the transport layer to discovery topology
and build its routing table.
We cannot assume that all open transport hardware will function the
same, hence the better approach is a library of helpers that function in
concert with LLDD to form a transport layer.
> MPT and open transport a very different, one hides the transport,
> i.e. the transport layer is in firmware; the other exposes it
For the 1001th time, we know all this.
Jeff
next prev parent reply other threads:[~2005-10-03 16:02 UTC|newest]
Thread overview: 165+ messages / expand[flat|nested] mbox.gz Atom feed top
[not found] <43384E28.8030207@adaptec.com>
2005-09-27 21:55 ` I request inclusion of SAS Transport Layer and AIC-94xx into the kernel Jeff Garzik
2005-09-27 22:51 ` Luben Tuikov
2005-09-27 23:14 ` Andre Hedrick
2005-09-28 11:37 ` Luben Tuikov
2005-09-28 12:32 ` Matthew Wilcox
2005-09-28 14:50 ` Linus Torvalds
2005-09-28 16:27 ` Patrick Mansfield
2005-09-28 16:34 ` Luben Tuikov
2005-09-28 19:45 ` Andre Hedrick
2005-09-28 20:56 ` Luben Tuikov
2005-09-28 22:35 ` Willy Tarreau
2005-09-28 23:22 ` Jeff Garzik
2005-09-28 23:29 ` David S. Miller
2005-09-29 5:30 ` Andre Hedrick
2005-09-29 7:24 ` David S. Miller
2005-09-30 7:36 ` Andre Hedrick
2005-09-30 18:34 ` Luben Tuikov
2005-09-30 18:50 ` Kyle Moffett
2005-09-30 19:08 ` Luben Tuikov
2005-09-30 21:31 ` Kyle Moffett
2005-09-30 22:10 ` Greg Freemyer
2005-09-30 22:19 ` Luben Tuikov
2005-09-30 23:54 ` Jeff Garzik
2005-10-01 4:58 ` Willy Tarreau
2005-10-03 15:08 ` Luben Tuikov
2005-10-03 14:04 ` Luben Tuikov
2005-09-30 22:14 ` Luben Tuikov
2005-10-01 0:33 ` Jeff Garzik
2005-10-03 14:18 ` Luben Tuikov
2005-10-03 14:26 ` I request inclusion of SAS Transport Layer and AIC-94xx intothe kernel David Lang
2005-10-03 15:19 ` Luben Tuikov
2005-10-03 15:30 ` I request inclusion of SAS Transport Layer and AIC-94xx intothekernel David Lang
2005-10-03 16:01 ` Jeff Garzik [this message]
2005-09-30 20:45 ` I request inclusion of SAS Transport Layer and AIC-94xx into the kernel James Bottomley
2005-09-30 22:05 ` Luben Tuikov
2005-10-01 0:38 ` Jeff Garzik
2005-10-03 15:27 ` Luben Tuikov
2005-10-03 16:28 ` Jeff Garzik
2005-09-30 22:04 ` Andre Hedrick
2005-09-30 22:32 ` Luben Tuikov
2005-09-30 23:57 ` Jeff Garzik
2005-10-03 14:15 ` Luben Tuikov
2005-10-03 15:57 ` Jeff Garzik
2005-10-03 16:23 ` Luben Tuikov
2005-10-03 16:48 ` Jeff Garzik
2005-10-03 19:03 ` Luben Tuikov
2005-10-03 19:32 ` Mike Christie
2005-10-03 20:15 ` Jeff Garzik
2005-10-03 19:10 ` Mike Christie
2005-09-30 18:51 ` Luben Tuikov
2005-09-29 14:33 ` Luben Tuikov
2005-09-29 14:48 ` Jeff Garzik
2005-09-29 15:50 ` Luben Tuikov
2005-09-29 16:54 ` Jeff Garzik
2005-09-29 18:25 ` Luben Tuikov
2005-09-29 15:15 ` grundig
2005-09-29 15:17 ` Bernd Petrovitsch
2005-09-29 16:33 ` Luben Tuikov
2005-09-29 16:56 ` Jeff Garzik
2005-09-29 16:58 ` Luben Tuikov
2005-09-29 17:03 ` Jeff Garzik
2005-09-29 18:09 ` Gerrit Huizenga
2005-09-29 17:13 ` Bernd Petrovitsch
2005-09-29 18:39 ` Luben Tuikov
2005-09-29 22:43 ` Joel Becker
2005-09-29 17:52 ` John Stoffel
2005-09-29 19:20 ` Bruce Ferrell
2005-09-28 22:43 ` Andre Hedrick
2005-09-29 15:04 ` Luben Tuikov
2005-09-29 15:08 ` Jeff Garzik
2005-09-29 16:22 ` Luben Tuikov
2005-09-29 19:09 ` Stefan Richter
2005-09-29 22:06 ` Luben Tuikov
2005-09-28 16:30 ` Valdis.Kletnieks
2005-09-28 16:35 ` Luben Tuikov
2005-09-28 2:02 ` Jeff Garzik
2005-09-28 20:36 ` Luben Tuikov
2005-09-28 21:00 ` Jeff Garzik
2005-09-28 22:10 ` Luben Tuikov
2005-09-28 23:04 ` Jeff Garzik
2005-09-29 4:04 ` Willy Tarreau
2005-09-29 7:44 ` Arjan van de Ven
2005-09-29 15:09 ` Luben Tuikov
2005-09-29 15:20 ` Jeff Garzik
2005-09-29 16:56 ` Luben Tuikov
2005-09-29 17:11 ` Jeff Garzik
2005-09-30 18:16 ` Joe Bob Spamtest
2005-09-29 17:15 ` Stefan Richter
2005-09-29 17:29 ` Jeff Garzik
2005-09-29 19:32 ` Willy Tarreau
2005-09-29 19:57 ` Linus Torvalds
2005-09-29 23:20 ` Luben Tuikov
2005-09-29 23:57 ` Prasenjit Sarkar
2005-09-30 6:35 ` Andre Hedrick
2005-09-30 0:35 ` Linus Torvalds
2005-09-30 1:25 ` Hua Zhong
2005-09-30 2:42 ` Marcin Dalecki
2005-09-30 19:12 ` Joe Bob Spamtest
2005-09-30 7:29 ` Douglas Gilbert
2005-09-30 14:23 ` Luben Tuikov
2005-09-30 16:26 ` Andrew Patterson
2005-09-30 16:47 ` Luben Tuikov
2005-09-30 14:07 ` Luben Tuikov
2005-09-30 5:31 ` Theodore Ts'o
2005-09-30 6:52 ` Andre Hedrick
2005-09-29 19:59 ` Stefan Richter
2005-09-29 19:37 ` Stefan Richter
2005-09-29 19:22 ` Stefan Richter
2005-09-30 17:07 Salyzyn, Mark
2005-09-30 17:53 ` Arjan van de Ven
2005-10-01 23:55 ` Alan Cox
2005-10-03 16:17 ` Luben Tuikov
2005-10-04 6:51 ` Andre Hedrick
2005-10-04 15:01 ` Luben Tuikov
2005-09-30 18:39 ` Andrew Patterson
2005-09-30 19:21 ` Luben Tuikov
2005-09-30 20:14 ` Andrew Patterson
2005-09-30 20:22 ` Matthew Wilcox
2005-09-30 21:44 ` Linus Torvalds
2005-10-01 17:46 ` Greg KH
2005-09-30 20:32 ` Luben Tuikov
2005-09-30 21:15 ` Andrew Patterson
2005-09-30 21:40 ` Joel Becker
2005-09-30 22:01 ` Luben Tuikov
2005-09-30 23:42 ` Marcin Dalecki
2005-10-03 13:54 ` Luben Tuikov
2005-10-03 16:29 ` Marcin Dalecki
2005-10-03 16:35 ` Andrew Patterson
2005-10-03 16:39 ` Luben Tuikov
2005-10-03 19:16 ` Marcin Dalecki
2005-10-03 21:26 ` Tomasz Kłoczko
2005-10-03 22:04 ` Ryan Anderson
2005-10-03 22:56 ` Linus Torvalds
2005-10-03 23:22 ` Al Viro
2005-10-04 13:55 ` Tomasz Kłoczko
2005-10-04 15:09 ` Linus Torvalds
2005-10-04 14:38 ` Luben Tuikov
2005-10-04 14:54 ` Jeff Garzik
2005-10-04 15:19 ` Luben Tuikov
2005-10-04 15:26 ` Jeff Garzik
2005-10-04 15:40 ` Luben Tuikov
2005-10-04 15:46 ` Matthew Wilcox
2005-10-04 6:30 ` Andre Hedrick
2005-10-01 0:02 ` Jeff Garzik
2005-10-01 0:01 ` Jeff Garzik
-- strict thread matches above, loose matches on Subject: below --
2005-09-30 1:28 Martin Fouts
2005-09-29 15:45 Moore, Eric Dean
2005-09-28 22:17 Moore, Eric Dean
2005-09-29 12:46 ` Luben Tuikov
2005-09-28 15:15 Moore, Eric Dean
2005-09-28 16:59 ` Luben Tuikov
2005-09-28 0:28 Moore, Eric Dean
2005-09-28 1:34 ` Andre Hedrick
2005-09-28 11:42 ` Luben Tuikov
2005-09-27 13:07 Luben Tuikov
2005-09-27 13:19 ` Christoph Hellwig
2005-09-27 15:01 ` Luben Tuikov
2005-09-27 15:53 ` James Bottomley
2005-09-27 19:35 ` Luben Tuikov
2005-09-27 20:34 ` Jeff Garzik
2005-09-27 21:44 ` Luben Tuikov
2005-09-27 22:01 ` Jeff Garzik
2005-09-27 23:03 ` Luben Tuikov
2005-09-27 23:32 ` Andrew Patterson
2005-09-28 2:07 ` Jeff Garzik
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