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171 Commits

Author SHA1 Message Date
zhenyu.z.wang@intel.com
3e97c7e6cd [SCSI] iscsi: host locking fix 
We should be taking the host_lock instead of the conn lock when
checking host_busy.

Signed-off-by: Alex Aizman <itn780@yahoo.com>
Signed-off-by: Dmitry Yusupov <dmitry_yus@yahoo.com>
Signed-off-by: Mike Christie <michaelc@cs.wisc.edu>
Signed-off-by: James Bottomley <James.Bottomley@SteelEye.com>
 2006-01-14 10:55:16 -06:00
zhenyu.z.wang@intel.com
bf310b8f58 [SCSI] iscsi: data under/over flow fix 
We need to check the ISCSI_FLAG_DATA_* flags.

Signed-off-by: Alex Aizman <itn780@yahoo.com>
Signed-off-by: Dmitry Yusupov <dmitry_yus@yahoo.com>
Signed-off-by: Mike Christie <michaelc@cs.wisc.edu>
Signed-off-by: James Bottomley <James.Bottomley@SteelEye.com>
 2006-01-14 10:55:15 -06:00
FUJITA Tomonori
42f72aa9e5 [SCSI] iscsi: whitespace cleanup 
Remove extra whitespaces.

Signed-off-by: Alex Aizman <itn780@yahoo.com>
Signed-off-by: Dmitry Yusupov <dmitry_yus@yahoo.com>
Signed-off-by: Mike Christie <michaelc@cs.wisc.edu>
Signed-off-by: James Bottomley <James.Bottomley@SteelEye.com>
 2006-01-14 10:55:14 -06:00
Arjan van de Ven
0b95067238 [SCSI] turn most scsi semaphores into mutexes 
the scsi layer is using semaphores in a mutex way, this patch converts
these into using mutexes instead

Signed-off-by: Arjan van de Ven <arjan@infradead.org>
Signed-off-by: James Bottomley <James.Bottomley@SteelEye.com>
 2006-01-12 11:53:11 -06:00
James Bottomley
2a1e1379ba Merge by hand (conflicts in scsi_lib.c) 
This merge is pretty extensive.  The conflict is over the new
req->retries parameter, so I had to change the prototype to
scsi_setup_blk_pc_cmnd() and the usage in sd, sr and st.

Signed-off-by: James Bottomley <James.Bottomley@SteelEye.com>
 2005-12-15 17:35:24 -06:00
Al Viro
b53cb2a4ab [PATCH] iscsi gfp_t annotations 
Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
 2005-12-15 10:04:29 -08:00
Mike Christie
8a47cd340b [SCSI] iscsi: check header digests for mgmt tasks 
From Wang Zhenyu:

check header digest for cmd and mgmt tasks

Signed-off-by: Wang Zhenyu <zhenyu.z.wang@intel.com>
Signed-off-by: Mike Christie <michaelc@cs.wisc.edu>
Signed-off-by: Alex Aizman <itn780@yahoo.com>
Signed-off-by: Dmitry Yusupov <dmitry_yus@yahoo.com>
Signed-off-by: James Bottomley <James.Bottomley@SteelEye.com>
 2005-12-13 18:12:03 -07:00
Mike Christie
4d841d6bd9 [SCSI] iscsi: update version 
Signed-off-by: Mike Christie <michaelc@cs.wisc.edu>
Signed-off-by: Alex Aizman <itn780@yahoo.com>
Signed-off-by: Dmitry Yusupov <dmitry_yus@yahoo.com>
Signed-off-by: James Bottomley <James.Bottomley@SteelEye.com>
 2005-12-13 18:12:02 -07:00
Mike Christie
9e3961ba2b [SCSI] iscsi: lower queue depth 
From Wang Zhenyu:

High queue depth was a problem for some targets so make queue_depth adjustable

From Mike Christie

Make default queue_depth a little lower

Signed-off-by: Mike Christie <michaelc@cs.wisc.edu>
Signed-off-by: Alex Aizman <itn780@yahoo.com>
Signed-off-by: Dmitry Yusupov <dmitry_yus@yahoo.com>
Signed-off-by: James Bottomley <James.Bottomley@SteelEye.com>
 2005-12-13 18:12:00 -07:00
Mike Christie
f6cfba1d21 [SCSI] iscsi: data digest calculation fix 
From Wang Zhenyu:

data digest fix (the bug caused data corruption w/Wasabi StorageBuilder target)

Signed-off-by: Mike Christie <michaelc@cs.wisc.edu>
Signed-off-by: Alex Aizman <itn780@yahoo.com>
Signed-off-by: Dmitry Yusupov <dmitry_yus@yahoo.com>
Signed-off-by: James Bottomley <James.Bottomley@SteelEye.com>
 2005-12-13 18:11:58 -07:00
Mike Christie
733bb6a70c [SCSI] iscsi: iscsi response fix 
from Wang Zhenyu:

Must check SCSI CMD and R2T response according to the spec

Signed-off-by: Mike Christie <michaelc@cs.wisc.edu>
Signed-off-by: Alex Aizman <itn780@yahoo.com>
Signed-off-by: Dmitry Yusupov <dmitry_yus@yahoo.com>
Signed-off-by: James Bottomley <James.Bottomley@SteelEye.com>
 2005-12-13 18:11:56 -07:00
Mike Christie
e6273993db [SCSI] iscsi: redirect fix 
From tomof@acm.org:

There is one more issue about Equallogic systems. They send
re-direction info with FIN. I think that the kernel module needs to
let iscsid to read data from the socket before killing it.

Signed-off-by: Mike Christie <michaelc@cs.wisc.edu>
Signed-off-by: Alex Aizman <itn780@yahoo.com>
Signed-off-by: Dmitry Yusupov <dmitry_yus@yahoo.com>
Signed-off-by: James Bottomley <James.Bottomley@SteelEye.com>
 2005-12-13 18:11:55 -07:00
Mike Christie
0d2f16559a [SCSI] iscsi: opcode check fix 
Must check only valid opcode bits.

Signed-off-by: Mike Christie <michaelc@cs.wisc.edu>
Signed-off-by: Alex Aizman <itn780@yahoo.com>
Signed-off-by: Dmitry Yusupov <dmitry_yus@yahoo.com>
Signed-off-by: James Bottomley <James.Bottomley@SteelEye.com>
 2005-12-13 18:11:53 -07:00
Mike Christie
beb8abd9a9 [SCSI] iscsi: add module version 
From: michaelc@cs.wisc.edu

I have a bad memory. I cannot remember what versions are which,
so add a module version to help.

Signed-off-by: Alex Aizman <itn780@yahoo.com>
Signed-off-by: Dmitry Yusupov <dmitry_yus@yahoo.com>
Signed-off-by: Mike Christie <michaelc@cs.wisc.edu>
Signed-off-by: James Bottomley <James.Bottomley@SteelEye.com>
 2005-09-20 12:36:35 -05:00
Mike Christie
9974487824 [SCSI] iscsi: fix nop-in handling 
From: zhenyu.z.wang@intel.com

This add check to NOOP_IN's ttt, when it's ~0UL we should not send
NOOP_OUT by spec (plus some cleanup).

Signed-off-by: Alex Aizman <itn780@yahoo.com>
Signed-off-by: Dmitry Yusupov <dmitry_yus@yahoo.com>
Signed-off-by: Mike Christie <michaelc@cs.wisc.edu>
Signed-off-by: James Bottomley <James.Bottomley@SteelEye.com>
 2005-09-20 12:36:02 -05:00
Mike Christie
02cf9311ee [SCSI] iscsi: fix ahs len 
From: tomof@acm.org

Fix AHS Length

Signed-off-by: Alex Aizman <itn780@yahoo.com>
Signed-off-by: Dmitry Yusupov <dmitry_yus@yahoo.com>
Signed-off-by: Mike Christie <michaelc@cs.wisc.edu>
Signed-off-by: James Bottomley <James.Bottomley@SteelEye.com>
 2005-09-20 12:34:14 -05:00
Mike Christie
baebc497b4 [SCSI] iscsi: update some iscsi proto defs 
From: michaelc@cs.wisc.edu

Cleanup some iscsi_proto defs, add some missing values, and
fix some defs.

Signed-off-by: Alex Aizman <itn780@yahoo.com>
Signed-off-by: Dmitry Yusupov <dmitry_yus@yahoo.com>
Signed-off-by: Mike Christie <michaelc@cs.wisc.edu>
Signed-off-by: James Bottomley <James.Bottomley@SteelEye.com>
 2005-09-20 12:33:30 -05:00
Mike Christie
bb05234979 [SCSI] iscsi: handle nonlinear skbs 
From: zhenyu.z.wang@intel.com

Fix oops from nonlinear skb usage.

Signed-off-by: Alex Aizman <itn780@yahoo.com>
Signed-off-by: Dmitry Yusupov <dmitry_yus@yahoo.com>
Signed-off-by: Mike Christie <michaelc@cs.wisc.edu>
Signed-off-by: James Bottomley <James.Bottomley@SteelEye.com>
 2005-09-20 12:32:45 -05:00
Mike Christie
af973481f4 [SCSI] iscsi: preemt fix and cleanup 
From: zhenyu.z.wang@intel.com

Delay the head digest update until xmit time, like data digest update.
[To make things cleaner and avoid prempt bug]

Signed-off-by: Alex Aizman <itn780@yahoo.com>
Signed-off-by: Dmitry Yusupov <dmitry_yus@yahoo.com>
Signed-off-by: Mike Christie <michaelc@cs.wisc.edu>
Signed-off-by: James Bottomley <James.Bottomley@SteelEye.com>
 2005-09-20 12:30:58 -05:00
Mike Christie
b13941f635 [SCSI] iscsi: nodelay fix 
From: tomof@acm.org

I'm not sure about this. I don't think that NODELAY option hurts
performance. However, open-iscsi does not use MSG_MORE properly with
sendpage, so NODELAY option hurts the open-iscsi performance.

I've attached a patch to fix NODELAY and MSG_MORE problems and the
write performance results with disktest.

I use Opteron boxes connected directly, Chelsio NICs, 1500-byte MTU,
64 KB I/O size, and the iSCSI parameters on open-iscsi web site.

With only NODELAY fix, the performance drops, as you said. On the
other hand, NODELAY and MSG_MORE fixes improve the performance
overall.

Signed-off-by: Alex Aizman <itn780@yahoo.com>
Signed-off-by: Dmitry Yusupov <dmitry_yus@yahoo.com>
Signed-off-by: Mike Christie <michaelc@cs.wisc.edu>
Signed-off-by: James Bottomley <James.Bottomley@SteelEye.com>
 2005-09-20 12:30:39 -05:00
Alex Aizman
7ba2471389 [SCSI] open-iscsi/linux-iscsi-5 Initiator: Initiator code 
drivers/scsi/iscsi_tcp.c, iscsi data path.

Signed-off-by: Alex Aizman <itn780@yahoo.com>
Signed-off-by: Dmitry Yusupov <dmitry_yus@yahoo.com>
Signed-off-by: Mike Christie <michaelc@cs.wisc.edu>
Signed-off-by: James Bottomley <James.Bottomley@SteelEye.com>
 2005-08-06 09:35:35 -05:00