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05d080488eb23640e13ec186b002f97c2807da7a
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Author SHA1 Message Date
Vladislav Bolkhovitin
05d080488e Small improvements 
git-svn-id: http://svn.code.sf.net/p/scst/svn/trunk@1907 d57e44dd-8a1f-0410-8b47-8ef2f437770f
 2010-08-02 17:58:03 +00:00
Vladislav Bolkhovitin
f28e08fd70 Small web update 
git-svn-id: http://svn.code.sf.net/p/scst/svn/trunk@1906 d57e44dd-8a1f-0410-8b47-8ef2f437770f
 2010-08-02 17:54:19 +00:00
Bart Van Assche
23a55be361 Fixed a compiler warning that was only reported on RHEL 5.x. 
git-svn-id: http://svn.code.sf.net/p/scst/svn/trunk@1905 d57e44dd-8a1f-0410-8b47-8ef2f437770f
 2010-08-02 17:01:06 +00:00
Bart Van Assche
e30376945f Changes: 
- Made sure that in mode thread=1 not only send completions but also receive completions are processed in thread context.
- Merged IB send and receive completion queues again such that both types of completions are processed in a fairly.

git-svn-id: http://svn.code.sf.net/p/scst/svn/trunk@1904 d57e44dd-8a1f-0410-8b47-8ef2f437770f
 2010-08-02 16:50:14 +00:00
Vladislav Bolkhovitin
0cb5524700 Web updates 
git-svn-id: http://svn.code.sf.net/p/scst/svn/trunk@1903 d57e44dd-8a1f-0410-8b47-8ef2f437770f
 2010-08-02 11:57:31 +00:00
Bart Van Assche
a851118fe6 Avoid that /sys/module/ib_srpt/parameters/srpt_service_guid contains a double newline. 
git-svn-id: http://svn.code.sf.net/p/scst/svn/trunk@1902 d57e44dd-8a1f-0410-8b47-8ef2f437770f
 2010-08-01 19:12:34 +00:00
Bart Van Assche
02d6dc9860 Functional changes: 
- Changed default value for the kernel module parameter thread from 0 to 1 because mode 0 can trigger soft lockup complaints under sufficient load.
- Changed default value for the kernel module parameter srpt_autodetect_cred_req from false to true.
Non-functional changes:
- Removed several superfluous casts in ib_srpt.c.
Performance-related changes:
- Rearranged if/then/else statements such that the most frequently executed code occurs first.
- When SCST_MAX_TGT_DEV_COMMANDS > 128, the SRP receive queue size is now SCST_MAX_TGT_DEV_COMMANDS instead of 128.
Bug fixes:
- Fixed performance bug in modes thread=0 and 2.
- Fixed a bug in IB send queue overflow handling.
- Fixed race related to IB completion thread creation (mode thread=1).
- Made sure that the following warning is no longer triggered during module removal:
WARNING: at fs/proc/generic.c:825 remove_proc_entry+0x261/0x2f0()
Call Trace:
 [<ffffffff8104d74b>] warn_slowpath_common+0x7b/0xc0
 [<ffffffff8104d7f1>] warn_slowpath_fmt+0x41/0x50
 [<ffffffff8116e8a1>] remove_proc_entry+0x261/0x2f0
 [<ffffffff810832c8>] ? debug_check_no_locks_freed+0xc8/0x150
 [<ffffffff81082ecb>] ? mark_held_locks+0x6b/0xa0
 [<ffffffff8110f95f>] ? kfree+0xcf/0x180
 [<ffffffff810831a5>] ? trace_hardirqs_on_caller+0x145/0x190
 [<ffffffff810831fd>] ? trace_hardirqs_on+0xd/0x10
 [<ffffffffa05835c2>] srpt_unregister_procfs_entry+0x22/0x40 [ib_srpt]
 [<ffffffffa0583aba>] srpt_release+0x8a/0x1a0 [ib_srpt]
 [<ffffffffa04cbcc0>] scst_unregister_target+0x70/0x3f0 [scst]
 [<ffffffff811bf6d7>] ? kobject_put+0x27/0x60
 [<ffffffff8126ff67>] ? put_device+0x17/0x20
 [<ffffffffa058587e>] srpt_remove_one+0xee/0x1a0 [ib_srpt]
 [<ffffffffa03ddfc5>] ib_unregister_client+0x65/0x120 [ib_core]
 [<ffffffffa0588f43>] srpt_cleanup_module+0x5f/0xc3 [ib_srpt]
 [<ffffffff8108e8dd>] sys_delete_module+0x1bd/0x280
 [<ffffffff8135e5ad>] ? retint_swapgs+0xe/0x13
 [<ffffffff810831a5>] ? trace_hardirqs_on_caller+0x145/0x190
 [<ffffffff810030db>] system_call_fastpath+0x16/0x1b
---[ end trace 3fc26663490f6a89 ]---

git-svn-id: http://svn.code.sf.net/p/scst/svn/trunk@1901 d57e44dd-8a1f-0410-8b47-8ef2f437770f
 2010-08-01 14:40:54 +00:00
Bart Van Assche
1590390350 Reordered two fields in struct srpt_rdma_ch. 
git-svn-id: http://svn.code.sf.net/p/scst/svn/trunk@1900 d57e44dd-8a1f-0410-8b47-8ef2f437770f
 2010-08-01 12:47:00 +00:00
Bart Van Assche
d402b1e851 Command abortion bug fix. 
git-svn-id: http://svn.code.sf.net/p/scst/svn/trunk@1899 d57e44dd-8a1f-0410-8b47-8ef2f437770f
 2010-07-30 15:28:56 +00:00
Bart Van Assche
b9c3b09613 Checkpatch fix. 
git-svn-id: http://svn.code.sf.net/p/scst/svn/trunk@1898 d57e44dd-8a1f-0410-8b47-8ef2f437770f
 2010-07-30 15:03:04 +00:00
Bart Van Assche
7ef2bc926e Made ib_srpt_compl kernel thread logging more detailed. 
git-svn-id: http://svn.code.sf.net/p/scst/svn/trunk@1897 d57e44dd-8a1f-0410-8b47-8ef2f437770f
 2010-07-30 14:53:22 +00:00
Bart Van Assche
02cfb12400 Fixed a bug in the algorithm that decides when to send SRP_CRED_REQ. 
git-svn-id: http://svn.code.sf.net/p/scst/svn/trunk@1896 d57e44dd-8a1f-0410-8b47-8ef2f437770f
 2010-07-30 14:45:41 +00:00
Bart Van Assche
ffe7409533 Changed behavior of mode thread=1: IB completions are now entirely processed on thread context and there is now one thread per session instead of one thread for all sessions. 
git-svn-id: http://svn.code.sf.net/p/scst/svn/trunk@1895 d57e44dd-8a1f-0410-8b47-8ef2f437770f
 2010-07-30 14:32:44 +00:00
Bart Van Assche
49cbea848a Dynamically decrease the initiator's SRP queue depth if it supports SRP_CRED_REQ and scst_get_max_lun_commands(NULL, 0) (48 with unmodified scst_priv.h) is less than SRPT_RQ_SIZE (128 with unmodified ib_srpt.h). 
git-svn-id: http://svn.code.sf.net/p/scst/svn/trunk@1894 d57e44dd-8a1f-0410-8b47-8ef2f437770f
 2010-07-30 11:26:40 +00:00
Mark Buechler
0857c68f7d - Be less verbose with the 'enabled' attribute. 
git-svn-id: http://svn.code.sf.net/p/scst/svn/trunk@1893 d57e44dd-8a1f-0410-8b47-8ef2f437770f
 2010-07-29 16:44:32 +00:00
Mark Buechler
32d9107dfd Big changes. 
1. Simplify attribute setting to use a generic setAttributes()
   function for anything requiring non-dynamic attributes.
2. Reorder function argument to always be the same as their
   associated SCST::SCST methods.



git-svn-id: http://svn.code.sf.net/p/scst/svn/trunk@1892 d57e44dd-8a1f-0410-8b47-8ef2f437770f
 2010-07-29 15:27:24 +00:00
Bart Van Assche
9ce80877d2 Added support for SRP_CRED_REQ and auto-detection of initiator SRP_CRED_REQ support (disabled by default). 
git-svn-id: http://svn.code.sf.net/p/scst/svn/trunk@1891 d57e44dd-8a1f-0410-8b47-8ef2f437770f
 2010-07-29 14:21:16 +00:00
Vladislav Bolkhovitin
7fe6c4e1af Fix 2 problems noticed by Chandra Seetharaman <sekharan@us.ibm.com>: 
1.  isns_get_ip() getnameinfo error Temporary failure in name resolution!
2. isns_handle() unknown function 8006 4 4c00 6 0



git-svn-id: http://svn.code.sf.net/p/scst/svn/trunk@1890 d57e44dd-8a1f-0410-8b47-8ef2f437770f
 2010-07-29 11:37:44 +00:00
Vladislav Bolkhovitin
f16f6864e5 Fixed truncating the last char while writing to filename attribute 
git-svn-id: http://svn.code.sf.net/p/scst/svn/trunk@1889 d57e44dd-8a1f-0410-8b47-8ef2f437770f
 2010-07-29 11:16:29 +00:00
Vladislav Bolkhovitin
2d9343958b Patch from Benjamin Yates <benjamin@rqdq.com> improving archlinux pkgbuild build. 
git-svn-id: http://svn.code.sf.net/p/scst/svn/trunk@1888 d57e44dd-8a1f-0410-8b47-8ef2f437770f
 2010-07-28 18:44:06 +00:00
Vladislav Bolkhovitin
f1313dfc7e Minor compiler warnings cleanup 
git-svn-id: http://svn.code.sf.net/p/scst/svn/trunk@1887 d57e44dd-8a1f-0410-8b47-8ef2f437770f
 2010-07-28 18:41:46 +00:00
Mark Buechler
dddcae1418 - Set driver and handler attributes on commit as well. 
git-svn-id: http://svn.code.sf.net/p/scst/svn/trunk@1886 d57e44dd-8a1f-0410-8b47-8ef2f437770f
 2010-07-28 15:36:06 +00:00
Mark Buechler
eb124ec057 - Properly handling of auto-enabled targets/drivers while 
reading a deprecated config file.



git-svn-id: http://svn.code.sf.net/p/scst/svn/trunk@1885 d57e44dd-8a1f-0410-8b47-8ef2f437770f
 2010-07-28 14:46:41 +00:00
Mark Buechler
96aaba2829 - Create targets from old Default_ groups for all drivers 
capable of dynamic target creation.
- While converting an old config file, set 'enabled' to 1 for
  all non-qla drivers which have the 'enabled' attribute so
  their targets can become enabled as well.



git-svn-id: http://svn.code.sf.net/p/scst/svn/trunk@1884 d57e44dd-8a1f-0410-8b47-8ef2f437770f
 2010-07-28 14:06:57 +00:00
Mark Buechler
95072429d8 - Don't tream an hash like an array. 
git-svn-id: http://svn.code.sf.net/p/scst/svn/trunk@1883 d57e44dd-8a1f-0410-8b47-8ef2f437770f
 2010-07-28 13:27:56 +00:00
Bart Van Assche
f299b1d2b3 Micro-optimization: replaced a spinlock by an atomic variable. 
git-svn-id: http://svn.code.sf.net/p/scst/svn/trunk@1882 d57e44dd-8a1f-0410-8b47-8ef2f437770f
 2010-07-28 10:15:33 +00:00
Vladislav Bolkhovitin
ecaabfc08c Patch fixing sparse warnings related to digest calculation 
Signed-off-by: Bart Van Assche <bart.vanassche@gmail.com>



git-svn-id: http://svn.code.sf.net/p/scst/svn/trunk@1881 d57e44dd-8a1f-0410-8b47-8ef2f437770f
 2010-07-27 18:34:07 +00:00
Bart Van Assche
803a312144 Replaced busy-waiting for more credits by wait_for_completion(). 
Moved processing delay loop out of interrupt context.
Preparations for SRP_CRED_REQ support and run-time receive queue selection.

git-svn-id: http://svn.code.sf.net/p/scst/svn/trunk@1880 d57e44dd-8a1f-0410-8b47-8ef2f437770f
 2010-07-27 16:23:45 +00:00
Bart Van Assche
8873db3eb6 Split a line. 
git-svn-id: http://svn.code.sf.net/p/scst/svn/trunk@1879 d57e44dd-8a1f-0410-8b47-8ef2f437770f
 2010-07-27 16:07:30 +00:00
Vladislav Bolkhovitin
a12a944d3a Consider only enabled targets for rel_tgt_id comparison 
git-svn-id: http://svn.code.sf.net/p/scst/svn/trunk@1878 d57e44dd-8a1f-0410-8b47-8ef2f437770f
 2010-07-27 11:06:59 +00:00
Vladislav Bolkhovitin
a554b2dda6 Minor sysfs fix 
git-svn-id: http://svn.code.sf.net/p/scst/svn/trunk@1877 d57e44dd-8a1f-0410-8b47-8ef2f437770f
 2010-07-27 10:55:44 +00:00
Bart Van Assche
747511e3b8 IB verbs compliance fix: drain the completion queues before destroying them. 
Moved some thread=1 related functions in ib_srpt.c such that these are grouped in the source file.

git-svn-id: http://svn.code.sf.net/p/scst/svn/trunk@1876 d57e44dd-8a1f-0410-8b47-8ef2f437770f
 2010-07-25 13:13:45 +00:00
Bart Van Assche
0925119ad8 Made sure that invocation of srpt_pending_cmd_timeout() after 
srpt_handle_rdma_comp() finished and before srpt_xmit_response() started works
properly.


git-svn-id: http://svn.code.sf.net/p/scst/svn/trunk@1875 d57e44dd-8a1f-0410-8b47-8ef2f437770f
 2010-07-25 09:34:20 +00:00
Bart Van Assche
1c64261bec Increased default send queue size from 2048 to 4096 and made the send queue 
size configurable via the kernel module parameter srpt_sq_size.


git-svn-id: http://svn.code.sf.net/p/scst/svn/trunk@1874 d57e44dd-8a1f-0410-8b47-8ef2f437770f
 2010-07-25 09:15:10 +00:00
Bart Van Assche
95bba60a0a Fixed a bug in the command abortion logic that could result rmmod ib_srpt to hang. 
git-svn-id: http://svn.code.sf.net/p/scst/svn/trunk@1873 d57e44dd-8a1f-0410-8b47-8ef2f437770f
 2010-07-24 16:47:29 +00:00
Bart Van Assche
ef509acbd8 Refined the timeout error message. 
git-svn-id: http://svn.code.sf.net/p/scst/svn/trunk@1872 d57e44dd-8a1f-0410-8b47-8ef2f437770f
 2010-07-24 11:46:29 +00:00
Bart Van Assche
dc80bce266 Fixed a race between initiator and target in the algorithm for computing the REQUEST LIMIT DELTA value sent in responses towards the initiator that could cause the initiators req_lim value temporarily to exceed 128 (SRPT_RQ_SIZE). While harmless, this caused messages like "ib_srpt: ***ERROR***: req_lim = -1 < 0" to appear in the target kernel log. 
git-svn-id: http://svn.code.sf.net/p/scst/svn/trunk@1871 d57e44dd-8a1f-0410-8b47-8ef2f437770f
 2010-07-24 08:35:28 +00:00
Bart Van Assche
a9d5ab6737 Added --group_reporting. 
git-svn-id: http://svn.code.sf.net/p/scst/svn/trunk@1870 d57e44dd-8a1f-0410-8b47-8ef2f437770f
 2010-07-23 13:41:59 +00:00
Bart Van Assche
06b4f6d8aa Increased SRP initiator lockup safety margin, fixed a sparse warning and added more comments. 
git-svn-id: http://svn.code.sf.net/p/scst/svn/trunk@1869 d57e44dd-8a1f-0410-8b47-8ef2f437770f
 2010-07-23 13:41:55 +00:00
Bart Van Assche
7322ff6c24 Added an additional test. 
git-svn-id: http://svn.code.sf.net/p/scst/svn/trunk@1868 d57e44dd-8a1f-0410-8b47-8ef2f437770f
 2010-07-23 12:25:54 +00:00
Bart Van Assche
c7472c2aa6 Made sure that ib_srp initiator cannot lock up even when its I/O depth > 1. 
git-svn-id: http://svn.code.sf.net/p/scst/svn/trunk@1867 d57e44dd-8a1f-0410-8b47-8ef2f437770f
 2010-07-23 12:23:39 +00:00
Bart Van Assche
baa4b4ee29 Fixed a bug that caused trouble while handling send completions for failed data transfer commands. An example of the call stack that could be logged: 
WARNING: at srpt/src/ib_srpt.c:2908 srpt_unmap_sg_to_ib_sge+0xcb/0x13e [ib_srpt]()
[ ... ]
Call Trace:
 <IRQ>  [<ffffffffa0317827>] ? srpt_unmap_sg_to_ib_sge+0xcb/0x13e [ib_srpt]
 [<ffffffff8023885a>] ? warn_slowpath_common+0x77/0x8e
 [<ffffffffa0317827>] ? srpt_unmap_sg_to_ib_sge+0xcb/0x13e [ib_srpt]
 [<ffffffffa03178f1>] ? srpt_handle_send_comp+0x57/0x7d [ib_srpt]
 [<ffffffffa0319c18>] ? srpt_send_completion+0x82/0xca [ib_srpt]
 [<ffffffffa024f646>] ? mlx4_cq_completion+0x21/0x62 [mlx4_core]
 [<ffffffffa025051e>] ? mlx4_eq_int+0x55/0x2a4 [mlx4_core]
 [<ffffffffa025077c>] ? mlx4_msi_x_interrupt+0xf/0x17 [mlx4_core]
 [<ffffffff8023cff6>] ? tasklet_action+0x64/0xb5
 [<ffffffff802675f9>] ? handle_IRQ_event+0x53/0x105
 [<ffffffff802690ac>] ? handle_edge_irq+0xda/0x11a
 [<ffffffff8020db65>] ? handle_irq+0x81/0x8a
 [<ffffffff8020d399>] ? do_IRQ+0x57/0xbf
 [<ffffffff8020c2d3>] ? ret_from_intr+0x0/0xa
 <EOI>  [<ffffffff80211ca6>] ? mwait_idle+0xa3/0xd1
 [<ffffffff8051ac1a>] ? notifier_call_chain+0x29/0x4c
 [<ffffffff8020aa61>] ? cpu_idle+0x40/0x5e
---[ end trace fef4d0c17ebda700 ]---
------------[ cut here ]------------
kernel BUG at /usr/src/redhat/BUILD/kernel-2.6.30.10/arch/x86/include/asm/dma-mapping.h:104!
invalid opcode: 0000 [#1] SMP
[ ... ]

git-svn-id: http://svn.code.sf.net/p/scst/svn/trunk@1866 d57e44dd-8a1f-0410-8b47-8ef2f437770f
 2010-07-23 07:38:15 +00:00
Bart Van Assche
5da3fc1f1b Rewrote four #if statements such that these can be parsed by scripts/generate-kernel-patch. 
git-svn-id: http://svn.code.sf.net/p/scst/svn/trunk@1865 d57e44dd-8a1f-0410-8b47-8ef2f437770f
 2010-07-23 07:24:27 +00:00
Vladislav Bolkhovitin
04556369b4 - Fix 2 lockdep complains 
- Preliminary update for 2.6.35



git-svn-id: http://svn.code.sf.net/p/scst/svn/trunk@1864 d57e44dd-8a1f-0410-8b47-8ef2f437770f
 2010-07-22 17:38:51 +00:00
Mark Buechler
7bfbb41963 - When reading deprecated config files, don't configure empty groups. 
- Minor formatting fix in writeConfiguration().



git-svn-id: http://svn.code.sf.net/p/scst/svn/trunk@1863 d57e44dd-8a1f-0410-8b47-8ef2f437770f
 2010-07-22 16:29:27 +00:00
Mark Buechler
f896acc78c - Forgot to rename sysfs to scstadmin.sysfs. 
git-svn-id: http://svn.code.sf.net/p/scst/svn/trunk@1862 d57e44dd-8a1f-0410-8b47-8ef2f437770f
 2010-07-22 14:59:08 +00:00
Mark Buechler
be6f9f219b - Rename sysfs and procfs to better names. 
- Specify module use version for procfs scstadmin.



git-svn-id: http://svn.code.sf.net/p/scst/svn/trunk@1861 d57e44dd-8a1f-0410-8b47-8ef2f437770f
 2010-07-22 14:51:08 +00:00
Mark Buechler
253c80692e - Integrate scstadmin's Makefile with enable_proc and 
disable_proc so the correct scstadmin version is
  installed.



git-svn-id: http://svn.code.sf.net/p/scst/svn/trunk@1860 d57e44dd-8a1f-0410-8b47-8ef2f437770f
 2010-07-22 14:47:16 +00:00
Richard Sharpe
5737910fb4 Put in a clearer work-around for the problem with the size of the max_cmd_size 
field. The size changed at 2.6.26 from unsigned char to unsigned short.


git-svn-id: http://svn.code.sf.net/p/scst/svn/trunk@1859 d57e44dd-8a1f-0410-8b47-8ef2f437770f
 2010-07-22 09:40:14 +00:00
Bart Van Assche
380d63a33e Updated performance measurements. 
git-svn-id: http://svn.code.sf.net/p/scst/svn/trunk@1858 d57e44dd-8a1f-0410-8b47-8ef2f437770f
 2010-07-22 08:32:50 +00:00