From: Jeff Garzik <jgarzik@pobox.com>
To: Luben Tuikov <luben_tuikov@adaptec.com>
Cc: Christoph Hellwig <hch@infradead.org>,
linux-scsi@vger.kernel.org,
Stefan Richter <stefanr@s5r6.in-berlin.de>
Subject: Re: [PATCH] minimal SAS transport class
Date: Fri, 26 Aug 2005 15:24:06 -0400 [thread overview]
Message-ID: <430F6C56.1090801@pobox.com> (raw)
In-Reply-To: <430F398A.30200@adaptec.com>
Luben Tuikov wrote:
> Even simpler: the transport layer, calls SCSI Core, saying: "Hey here is
> a pointer to struct scsi_domain_device. If you want, you an send REPORT
> LUNS and other things to it."
For the SG_IO ioctl, /dev/sg and request_queue usage, SCSI core must map
an address (currently HCIL) into a scsi_domain_device pointer. These
upper layer kernel elements rely on this "SCSI address", and rely on the
fact that SCSI core can route from a block device straight to a SCSI
LLD, using nothing more than this "SCSI address."
That is the heart of the routing/addressing that the SCSI core must perform.
Right now the addressing is hardcoded to HCIL. But that can be
changed... One proposal was to use (host,string) identifiers.
Jeff
next prev parent reply other threads:[~2005-08-26 19:24 UTC|newest]
Thread overview: 83+ messages / expand[flat|nested] mbox.gz Atom feed top
2005-08-23 16:16 [PATCH] minimal SAS transport class James.Smart
2005-08-23 17:28 ` Stefan Richter
2005-08-24 0:02 ` Luben Tuikov
2005-08-24 9:12 ` Christoph Hellwig
2005-08-26 15:47 ` Luben Tuikov
2005-08-26 16:29 ` scsi device driver Yijian Wang
2005-08-26 19:24 ` Jeff Garzik [this message]
2005-08-26 19:44 ` [PATCH] minimal SAS transport class Luben Tuikov
2005-08-27 1:53 ` Jeff Garzik
2005-08-27 7:35 ` Stefan Richter
2005-08-28 22:27 ` Luben Tuikov
2005-08-29 5:16 ` Stefan Richter
2005-08-29 17:11 ` Christoph Hellwig
2005-08-29 17:20 ` Luben Tuikov
2005-08-29 17:25 ` Christoph Hellwig
2005-08-29 17:16 ` Christoph Hellwig
2005-08-29 17:31 ` Luben Tuikov
2005-08-29 18:34 ` Luben Tuikov
2005-08-29 18:09 ` James Bottomley
2005-08-23 17:57 ` Patrick Mansfield
-- strict thread matches above, loose matches on Subject: below --
2005-08-23 18:25 James.Smart
2005-08-22 23:08 Moore, Eric Dean
2005-08-24 8:59 ` Christoph Hellwig
2005-08-20 4:15 James.Smart
2005-08-20 4:57 ` Jeff Garzik
2005-08-20 17:23 ` Luben Tuikov
2005-08-21 17:03 ` Christoph Hellwig
2005-08-21 16:52 ` Christoph Hellwig
2005-08-21 18:23 ` Luben Tuikov
2005-08-22 4:55 ` Matt Domsch
2005-08-22 17:05 ` Luben Tuikov
2005-08-22 21:53 ` Mike Anderson
2005-08-23 23:55 ` Luben Tuikov
2005-08-24 17:12 ` Patrick Mansfield
2005-08-24 20:05 ` Luben Tuikov
2005-08-24 20:42 ` Patrick Mansfield
2005-08-24 21:48 ` Luben Tuikov
2005-08-23 11:10 ` Douglas Gilbert
2005-08-23 6:27 ` Hannes Reinecke
2005-08-23 15:42 ` Patrick Mansfield
2005-08-23 15:53 ` Matthew Wilcox
2005-08-24 0:13 ` Luben Tuikov
2005-08-25 19:32 ` Stefan Richter
2005-08-25 20:06 ` Jeff Garzik
2005-08-26 16:43 ` Luben Tuikov
2005-08-26 17:22 ` James Bottomley
2005-08-26 18:16 ` Luben Tuikov
2005-08-26 18:48 ` Jeff Garzik
2005-08-26 19:37 ` Luben Tuikov
2005-08-27 1:39 ` Jeff Garzik
2005-08-27 7:11 ` Stefan Richter
2005-08-28 22:13 ` Luben Tuikov
2005-08-18 18:48 James.Smart
2005-08-18 19:04 ` Jeff Garzik
2005-08-19 14:06 ` Christoph Hellwig
2005-08-19 17:51 ` Luben Tuikov
2005-08-19 17:54 ` Christoph Hellwig
2005-08-19 17:56 ` Luben Tuikov
2005-08-19 17:59 ` Christoph Hellwig
2005-08-19 18:07 ` Luben Tuikov
2005-08-19 19:59 ` James Bottomley
2005-08-19 20:32 ` Luben Tuikov
2005-08-19 20:54 ` Jeff Garzik
2005-08-20 9:18 ` Christoph Hellwig
2005-08-20 17:34 ` Luben Tuikov
2005-08-21 6:41 ` Arjan van de Ven
2005-08-21 17:07 ` Christoph Hellwig
2005-08-19 19:08 ` Luben Tuikov
2005-08-18 20:06 ` Luben Tuikov
2005-08-19 14:04 ` Christoph Hellwig
2005-08-18 14:43 James.Smart
2005-08-18 14:02 James.Smart
2005-08-18 17:56 ` Christoph Hellwig
2005-08-18 20:05 ` Luben Tuikov
2005-08-19 14:15 ` Christoph Hellwig
2005-08-18 11:57 James.Smart
2005-08-15 13:55 Christoph Hellwig
2005-08-15 14:19 ` Luben Tuikov
2005-08-15 14:35 ` Arjan van de Ven
2005-08-15 15:04 ` Luben Tuikov
2005-08-15 15:13 ` Luben Tuikov
2005-08-15 15:21 ` Christoph Hellwig
2005-08-15 15:33 ` Luben Tuikov
Reply instructions:
You may reply publicly to this message via plain-text email
using any one of the following methods:
* Save the following mbox file, import it into your mail client,
and reply-to-all from there: mbox
Avoid top-posting and favor interleaved quoting:
https://en.wikipedia.org/wiki/Posting_style#Interleaved_style
* Reply using the --to, --cc, and --in-reply-to
switches of git-send-email(1):
git send-email \
--in-reply-to=430F6C56.1090801@pobox.com \
--to=jgarzik@pobox.com \
--cc=hch@infradead.org \
--cc=linux-scsi@vger.kernel.org \
--cc=luben_tuikov@adaptec.com \
--cc=stefanr@s5r6.in-berlin.de \
/path/to/YOUR_REPLY
https://kernel.org/pub/software/scm/git/docs/git-send-email.html
* If your mail client supports setting the In-Reply-To header
via mailto: links, try the mailto: link
Be sure your reply has a Subject: header at the top and a blank line
before the message body.
This is a public inbox, see mirroring instructions
for how to clone and mirror all data and code used for this inbox;
as well as URLs for NNTP newsgroup(s).