From: Steve Wise <swise@opengridcomputing.com>
To: David Miller <davem@davemloft.net>
Cc: tom@opengridcomputing.com, rdreier@cisco.com, rick.jones2@hp.com,
jgarzik@pobox.com, divy@chelsio.com, kxie@chelsio.com,
netdev@vger.kernel.org, open-iscsi@googlegroups.com,
michaelc@cs.wisc.edu, daisyc@us.ibm.com, wenxiong@us.ibm.com,
bhua@us.ibm.com, dm@chelsio.com, leedom@chelsio.com,
linux-scsi@vger.kernel.org, linux-kernel@vger.kernel.org
Subject: Re: [RFC][PATCH 1/1] cxgb3i: cxgb3 iSCSI initiator
Date: Wed, 13 Aug 2008 20:52:47 -0500 [thread overview]
Message-ID: <48A38FEF.6090500@opengridcomputing.com> (raw)
In-Reply-To: <20080813.183755.72334968.davem@davemloft.net>
David Miller wrote:
> From: Tom Tucker <tom@opengridcomputing.com>
> 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.
>
How do you envision programming such a device? It will need TCP and
iSCSI state to have any chance of doing useful and productive placement
of data. The smarts about the iSCSI stateless offload hw will be in the
device driver, probably the iscsi device driver. How will it gather the
information from the TCP stack to insert the correct state for a flow
into the hw cache?
next prev parent reply other threads:[~2008-08-14 1:52 UTC|newest]
Thread overview: 71+ messages / expand[flat|nested] mbox.gz Atom feed top
2008-07-30 0:19 [RFC][PATCH 1/1] cxgb3i: cxgb3 iSCSI initiator Karen Xie
2008-07-30 18:15 ` Shyam_Iyer
2008-07-30 18:37 ` Karen Xie
2008-07-30 19:21 ` Roland Dreier
2008-07-30 19:35 ` Jeff Garzik
2008-07-30 21:35 ` Roland Dreier
2008-08-01 0:51 ` Divy Le Ray
2008-08-07 18:45 ` Divy Le Ray
2008-08-07 20:07 ` Mike Christie
2008-08-08 18:09 ` Steve Wise
2008-08-08 22:15 ` Jeff Garzik
2008-08-08 22:20 ` Jeff Garzik
2008-08-09 7:28 ` David Miller
2008-08-09 14:04 ` Steve Wise
2008-08-10 5:14 ` Roland Dreier
2008-08-10 5:47 ` David Miller
2008-08-10 6:34 ` Herbert Xu
2008-08-10 17:57 ` Steve Wise
2008-08-11 16:09 ` Roland Dreier
2008-08-11 21:09 ` David Miller
2008-08-11 21:37 ` Roland Dreier
2008-08-11 21:51 ` David Miller
2008-08-11 23:20 ` Steve Wise
2008-08-11 23:45 ` Divy Le Ray
2008-08-12 0:22 ` David Miller
2008-08-10 5:12 ` Roland Dreier
2008-08-10 5:46 ` David Miller
2008-08-11 16:07 ` Roland Dreier
2008-08-11 21:08 ` David Miller
2008-08-11 21:39 ` Roland Dreier
2008-08-11 21:52 ` David Miller
2008-08-11 18:13 ` Rick Jones
2008-08-11 21:12 ` David Miller
2008-08-11 21:41 ` Roland Dreier
2008-08-11 21:53 ` David Miller
2008-08-12 21:57 ` Divy Le Ray
2008-08-12 22:01 ` David Miller
2008-08-12 22:02 ` David Miller
2008-08-12 22:21 ` Divy Le Ray
2008-08-13 1:57 ` Herbert Xu
2008-08-13 18:35 ` Vladislav Bolkhovitin
2008-08-13 19:29 ` Jeff Garzik
2008-08-13 20:13 ` David Miller
2008-08-14 18:24 ` Vladislav Bolkhovitin
2008-08-14 21:59 ` Nicholas A. Bellinger
2008-08-13 20:23 ` David Miller
2008-08-14 18:27 ` Vladislav Bolkhovitin
2008-08-14 18:30 ` Vladislav Bolkhovitin
2008-08-13 21:27 ` Roland Dreier
2008-08-13 22:08 ` David Miller
2008-08-13 23:03 ` Roland Dreier
2008-08-13 23:12 ` David Miller
2008-08-14 1:26 ` Tom Tucker
2008-08-14 1:37 ` David Miller
2008-08-14 1:52 ` Steve Wise [this message]
2008-08-14 2:05 ` David Miller
2008-08-14 2:44 ` Steve Wise
2008-08-14 1:57 ` Tom Tucker
2008-08-14 2:07 ` David Miller
2008-08-14 2:09 ` David Miller
2008-08-14 20:45 ` Andrew Gallatin
2008-08-14 22:23 ` David Miller
2008-08-15 12:19 ` Andrew Gallatin
2008-08-10 6:24 ` Herbert Xu
2008-08-10 9:19 ` Alan Cox
2008-08-10 12:49 ` Jeff Garzik
2008-08-10 14:54 ` James Bottomley
[not found] ` <1218380086.3418.21.camel-bi+AKbBUZKY6gyzm1THtWbp2dZbC/Bob@public.gmane.org>
2008-08-11 16:50 ` Mike Christie
2008-07-31 1:24 ` Karen Xie
2008-07-31 12:45 ` Boaz Harrosh
2008-07-31 12:33 ` Boaz Harrosh
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=48A38FEF.6090500@opengridcomputing.com \
--to=swise@opengridcomputing.com \
--cc=bhua@us.ibm.com \
--cc=daisyc@us.ibm.com \
--cc=davem@davemloft.net \
--cc=divy@chelsio.com \
--cc=dm@chelsio.com \
--cc=jgarzik@pobox.com \
--cc=kxie@chelsio.com \
--cc=leedom@chelsio.com \
--cc=linux-kernel@vger.kernel.org \
--cc=linux-scsi@vger.kernel.org \
--cc=michaelc@cs.wisc.edu \
--cc=netdev@vger.kernel.org \
--cc=open-iscsi@googlegroups.com \
--cc=rdreier@cisco.com \
--cc=rick.jones2@hp.com \
--cc=tom@opengridcomputing.com \
--cc=wenxiong@us.ibm.com \
/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).