[SCSI] target: Add LIO target core v4.0.0-rc6
LIO target is a full featured in-kernel target framework with the
following feature set:
High-performance, non-blocking, multithreaded architecture with SIMD
support.
Advanced SCSI feature set:
* Persistent Reservations (PRs)
* Asymmetric Logical Unit Assignment (ALUA)
* Protocol and intra-nexus multiplexing, load-balancing and failover (MC/S)
* Full Error Recovery (ERL=0,1,2)
* Active/active task migration and session continuation (ERL=2)
* Thin LUN provisioning (UNMAP and WRITE_SAMExx)
Multiprotocol target plugins
Storage media independence:
* Virtualization of all storage media; transparent mapping of IO to LUNs
* No hard limits on number of LUNs per Target; maximum LUN size ~750 TB
* Backstores: SATA, SAS, SCSI, BluRay, DVD, FLASH, USB, ramdisk, etc.
Standards compliance:
* Full compliance with IETF (RFC 3720)
* Full implementation of SPC-4 PRs and ALUA
Significant code cleanups done by Christoph Hellwig.
[jejb: fix up for new block bdev exclusive interface. Minor fixes from
Randy Dunlap and Dan Carpenter.]
Signed-off-by: Nicholas A. Bellinger <nab@linux-iscsi.org>
Signed-off-by: James Bottomley <James.Bottomley@suse.de>
2010-12-18 03:11:26 +08:00
|
|
|
/*******************************************************************************
|
|
|
|
* Filename: target_core_device.c (based on iscsi_target_device.c)
|
|
|
|
*
|
2011-07-19 16:55:10 +08:00
|
|
|
* This file contains the TCM Virtual Device and Disk Transport
|
[SCSI] target: Add LIO target core v4.0.0-rc6
LIO target is a full featured in-kernel target framework with the
following feature set:
High-performance, non-blocking, multithreaded architecture with SIMD
support.
Advanced SCSI feature set:
* Persistent Reservations (PRs)
* Asymmetric Logical Unit Assignment (ALUA)
* Protocol and intra-nexus multiplexing, load-balancing and failover (MC/S)
* Full Error Recovery (ERL=0,1,2)
* Active/active task migration and session continuation (ERL=2)
* Thin LUN provisioning (UNMAP and WRITE_SAMExx)
Multiprotocol target plugins
Storage media independence:
* Virtualization of all storage media; transparent mapping of IO to LUNs
* No hard limits on number of LUNs per Target; maximum LUN size ~750 TB
* Backstores: SATA, SAS, SCSI, BluRay, DVD, FLASH, USB, ramdisk, etc.
Standards compliance:
* Full compliance with IETF (RFC 3720)
* Full implementation of SPC-4 PRs and ALUA
Significant code cleanups done by Christoph Hellwig.
[jejb: fix up for new block bdev exclusive interface. Minor fixes from
Randy Dunlap and Dan Carpenter.]
Signed-off-by: Nicholas A. Bellinger <nab@linux-iscsi.org>
Signed-off-by: James Bottomley <James.Bottomley@suse.de>
2010-12-18 03:11:26 +08:00
|
|
|
* agnostic related functions.
|
|
|
|
*
|
2013-09-06 06:29:12 +08:00
|
|
|
* (c) Copyright 2003-2013 Datera, Inc.
|
[SCSI] target: Add LIO target core v4.0.0-rc6
LIO target is a full featured in-kernel target framework with the
following feature set:
High-performance, non-blocking, multithreaded architecture with SIMD
support.
Advanced SCSI feature set:
* Persistent Reservations (PRs)
* Asymmetric Logical Unit Assignment (ALUA)
* Protocol and intra-nexus multiplexing, load-balancing and failover (MC/S)
* Full Error Recovery (ERL=0,1,2)
* Active/active task migration and session continuation (ERL=2)
* Thin LUN provisioning (UNMAP and WRITE_SAMExx)
Multiprotocol target plugins
Storage media independence:
* Virtualization of all storage media; transparent mapping of IO to LUNs
* No hard limits on number of LUNs per Target; maximum LUN size ~750 TB
* Backstores: SATA, SAS, SCSI, BluRay, DVD, FLASH, USB, ramdisk, etc.
Standards compliance:
* Full compliance with IETF (RFC 3720)
* Full implementation of SPC-4 PRs and ALUA
Significant code cleanups done by Christoph Hellwig.
[jejb: fix up for new block bdev exclusive interface. Minor fixes from
Randy Dunlap and Dan Carpenter.]
Signed-off-by: Nicholas A. Bellinger <nab@linux-iscsi.org>
Signed-off-by: James Bottomley <James.Bottomley@suse.de>
2010-12-18 03:11:26 +08:00
|
|
|
*
|
|
|
|
* Nicholas A. Bellinger <nab@kernel.org>
|
|
|
|
*
|
|
|
|
* This program is free software; you can redistribute it and/or modify
|
|
|
|
* it under the terms of the GNU General Public License as published by
|
|
|
|
* the Free Software Foundation; either version 2 of the License, or
|
|
|
|
* (at your option) any later version.
|
|
|
|
*
|
|
|
|
* This program is distributed in the hope that it will be useful,
|
|
|
|
* but WITHOUT ANY WARRANTY; without even the implied warranty of
|
|
|
|
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
|
|
|
|
* GNU General Public License for more details.
|
|
|
|
*
|
|
|
|
* You should have received a copy of the GNU General Public License
|
|
|
|
* along with this program; if not, write to the Free Software
|
|
|
|
* Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
|
|
|
|
*
|
|
|
|
******************************************************************************/
|
|
|
|
|
|
|
|
#include <linux/net.h>
|
|
|
|
#include <linux/string.h>
|
|
|
|
#include <linux/delay.h>
|
|
|
|
#include <linux/timer.h>
|
|
|
|
#include <linux/slab.h>
|
|
|
|
#include <linux/spinlock.h>
|
|
|
|
#include <linux/kthread.h>
|
|
|
|
#include <linux/in.h>
|
2011-08-31 06:16:43 +08:00
|
|
|
#include <linux/export.h>
|
2016-11-15 07:47:14 +08:00
|
|
|
#include <linux/t10-pi.h>
|
2015-05-20 05:44:40 +08:00
|
|
|
#include <asm/unaligned.h>
|
[SCSI] target: Add LIO target core v4.0.0-rc6
LIO target is a full featured in-kernel target framework with the
following feature set:
High-performance, non-blocking, multithreaded architecture with SIMD
support.
Advanced SCSI feature set:
* Persistent Reservations (PRs)
* Asymmetric Logical Unit Assignment (ALUA)
* Protocol and intra-nexus multiplexing, load-balancing and failover (MC/S)
* Full Error Recovery (ERL=0,1,2)
* Active/active task migration and session continuation (ERL=2)
* Thin LUN provisioning (UNMAP and WRITE_SAMExx)
Multiprotocol target plugins
Storage media independence:
* Virtualization of all storage media; transparent mapping of IO to LUNs
* No hard limits on number of LUNs per Target; maximum LUN size ~750 TB
* Backstores: SATA, SAS, SCSI, BluRay, DVD, FLASH, USB, ramdisk, etc.
Standards compliance:
* Full compliance with IETF (RFC 3720)
* Full implementation of SPC-4 PRs and ALUA
Significant code cleanups done by Christoph Hellwig.
[jejb: fix up for new block bdev exclusive interface. Minor fixes from
Randy Dunlap and Dan Carpenter.]
Signed-off-by: Nicholas A. Bellinger <nab@linux-iscsi.org>
Signed-off-by: James Bottomley <James.Bottomley@suse.de>
2010-12-18 03:11:26 +08:00
|
|
|
#include <net/sock.h>
|
|
|
|
#include <net/tcp.h>
|
2015-05-08 16:11:12 +08:00
|
|
|
#include <scsi/scsi_common.h>
|
|
|
|
#include <scsi/scsi_proto.h>
|
[SCSI] target: Add LIO target core v4.0.0-rc6
LIO target is a full featured in-kernel target framework with the
following feature set:
High-performance, non-blocking, multithreaded architecture with SIMD
support.
Advanced SCSI feature set:
* Persistent Reservations (PRs)
* Asymmetric Logical Unit Assignment (ALUA)
* Protocol and intra-nexus multiplexing, load-balancing and failover (MC/S)
* Full Error Recovery (ERL=0,1,2)
* Active/active task migration and session continuation (ERL=2)
* Thin LUN provisioning (UNMAP and WRITE_SAMExx)
Multiprotocol target plugins
Storage media independence:
* Virtualization of all storage media; transparent mapping of IO to LUNs
* No hard limits on number of LUNs per Target; maximum LUN size ~750 TB
* Backstores: SATA, SAS, SCSI, BluRay, DVD, FLASH, USB, ramdisk, etc.
Standards compliance:
* Full compliance with IETF (RFC 3720)
* Full implementation of SPC-4 PRs and ALUA
Significant code cleanups done by Christoph Hellwig.
[jejb: fix up for new block bdev exclusive interface. Minor fixes from
Randy Dunlap and Dan Carpenter.]
Signed-off-by: Nicholas A. Bellinger <nab@linux-iscsi.org>
Signed-off-by: James Bottomley <James.Bottomley@suse.de>
2010-12-18 03:11:26 +08:00
|
|
|
|
|
|
|
#include <target/target_core_base.h>
|
2011-11-16 22:46:48 +08:00
|
|
|
#include <target/target_core_backend.h>
|
|
|
|
#include <target/target_core_fabric.h>
|
[SCSI] target: Add LIO target core v4.0.0-rc6
LIO target is a full featured in-kernel target framework with the
following feature set:
High-performance, non-blocking, multithreaded architecture with SIMD
support.
Advanced SCSI feature set:
* Persistent Reservations (PRs)
* Asymmetric Logical Unit Assignment (ALUA)
* Protocol and intra-nexus multiplexing, load-balancing and failover (MC/S)
* Full Error Recovery (ERL=0,1,2)
* Active/active task migration and session continuation (ERL=2)
* Thin LUN provisioning (UNMAP and WRITE_SAMExx)
Multiprotocol target plugins
Storage media independence:
* Virtualization of all storage media; transparent mapping of IO to LUNs
* No hard limits on number of LUNs per Target; maximum LUN size ~750 TB
* Backstores: SATA, SAS, SCSI, BluRay, DVD, FLASH, USB, ramdisk, etc.
Standards compliance:
* Full compliance with IETF (RFC 3720)
* Full implementation of SPC-4 PRs and ALUA
Significant code cleanups done by Christoph Hellwig.
[jejb: fix up for new block bdev exclusive interface. Minor fixes from
Randy Dunlap and Dan Carpenter.]
Signed-off-by: Nicholas A. Bellinger <nab@linux-iscsi.org>
Signed-off-by: James Bottomley <James.Bottomley@suse.de>
2010-12-18 03:11:26 +08:00
|
|
|
|
2011-11-15 01:30:30 +08:00
|
|
|
#include "target_core_internal.h"
|
[SCSI] target: Add LIO target core v4.0.0-rc6
LIO target is a full featured in-kernel target framework with the
following feature set:
High-performance, non-blocking, multithreaded architecture with SIMD
support.
Advanced SCSI feature set:
* Persistent Reservations (PRs)
* Asymmetric Logical Unit Assignment (ALUA)
* Protocol and intra-nexus multiplexing, load-balancing and failover (MC/S)
* Full Error Recovery (ERL=0,1,2)
* Active/active task migration and session continuation (ERL=2)
* Thin LUN provisioning (UNMAP and WRITE_SAMExx)
Multiprotocol target plugins
Storage media independence:
* Virtualization of all storage media; transparent mapping of IO to LUNs
* No hard limits on number of LUNs per Target; maximum LUN size ~750 TB
* Backstores: SATA, SAS, SCSI, BluRay, DVD, FLASH, USB, ramdisk, etc.
Standards compliance:
* Full compliance with IETF (RFC 3720)
* Full implementation of SPC-4 PRs and ALUA
Significant code cleanups done by Christoph Hellwig.
[jejb: fix up for new block bdev exclusive interface. Minor fixes from
Randy Dunlap and Dan Carpenter.]
Signed-off-by: Nicholas A. Bellinger <nab@linux-iscsi.org>
Signed-off-by: James Bottomley <James.Bottomley@suse.de>
2010-12-18 03:11:26 +08:00
|
|
|
#include "target_core_alua.h"
|
|
|
|
#include "target_core_pr.h"
|
|
|
|
#include "target_core_ua.h"
|
|
|
|
|
2017-07-04 16:44:19 +08:00
|
|
|
static DEFINE_MUTEX(device_mutex);
|
|
|
|
static LIST_HEAD(device_list);
|
2017-06-23 14:18:13 +08:00
|
|
|
static DEFINE_IDR(devices_idr);
|
2013-08-23 02:33:37 +08:00
|
|
|
|
2011-07-19 16:55:10 +08:00
|
|
|
static struct se_hba *lun0_hba;
|
|
|
|
/* not static, needed by tpg.c */
|
|
|
|
struct se_device *g_lun0_dev;
|
|
|
|
|
2012-11-07 04:24:09 +08:00
|
|
|
sense_reason_t
|
2015-06-10 14:41:22 +08:00
|
|
|
transport_lookup_cmd_lun(struct se_cmd *se_cmd, u64 unpacked_lun)
|
[SCSI] target: Add LIO target core v4.0.0-rc6
LIO target is a full featured in-kernel target framework with the
following feature set:
High-performance, non-blocking, multithreaded architecture with SIMD
support.
Advanced SCSI feature set:
* Persistent Reservations (PRs)
* Asymmetric Logical Unit Assignment (ALUA)
* Protocol and intra-nexus multiplexing, load-balancing and failover (MC/S)
* Full Error Recovery (ERL=0,1,2)
* Active/active task migration and session continuation (ERL=2)
* Thin LUN provisioning (UNMAP and WRITE_SAMExx)
Multiprotocol target plugins
Storage media independence:
* Virtualization of all storage media; transparent mapping of IO to LUNs
* No hard limits on number of LUNs per Target; maximum LUN size ~750 TB
* Backstores: SATA, SAS, SCSI, BluRay, DVD, FLASH, USB, ramdisk, etc.
Standards compliance:
* Full compliance with IETF (RFC 3720)
* Full implementation of SPC-4 PRs and ALUA
Significant code cleanups done by Christoph Hellwig.
[jejb: fix up for new block bdev exclusive interface. Minor fixes from
Randy Dunlap and Dan Carpenter.]
Signed-off-by: Nicholas A. Bellinger <nab@linux-iscsi.org>
Signed-off-by: James Bottomley <James.Bottomley@suse.de>
2010-12-18 03:11:26 +08:00
|
|
|
{
|
|
|
|
struct se_lun *se_lun = NULL;
|
2011-07-19 16:55:10 +08:00
|
|
|
struct se_session *se_sess = se_cmd->se_sess;
|
2015-03-23 11:42:19 +08:00
|
|
|
struct se_node_acl *nacl = se_sess->se_node_acl;
|
|
|
|
struct se_dev_entry *deve;
|
2015-09-17 11:23:53 +08:00
|
|
|
sense_reason_t ret = TCM_NO_SENSE;
|
2011-07-19 18:26:37 +08:00
|
|
|
|
2015-03-23 11:42:19 +08:00
|
|
|
rcu_read_lock();
|
|
|
|
deve = target_nacl_find_deve(nacl, unpacked_lun);
|
|
|
|
if (deve) {
|
|
|
|
atomic_long_inc(&deve->total_cmds);
|
2011-07-19 18:26:37 +08:00
|
|
|
|
|
|
|
if (se_cmd->data_direction == DMA_TO_DEVICE)
|
2015-03-23 11:42:19 +08:00
|
|
|
atomic_long_add(se_cmd->data_length,
|
|
|
|
&deve->write_bytes);
|
2011-07-19 18:26:37 +08:00
|
|
|
else if (se_cmd->data_direction == DMA_FROM_DEVICE)
|
2015-03-23 11:42:19 +08:00
|
|
|
atomic_long_add(se_cmd->data_length,
|
|
|
|
&deve->read_bytes);
|
2011-07-19 18:26:37 +08:00
|
|
|
|
2015-03-23 11:42:19 +08:00
|
|
|
se_lun = rcu_dereference(deve->se_lun);
|
target: Fix NULL dereference during LUN lookup + active I/O shutdown
When transport_clear_lun_ref() is shutting down a se_lun via
configfs with new I/O in-flight, it's possible to trigger a
NULL pointer dereference in transport_lookup_cmd_lun() due
to the fact percpu_ref_get() doesn't do any __PERCPU_REF_DEAD
checking before incrementing lun->lun_ref.count after
lun->lun_ref has switched to atomic_t mode.
This results in a NULL pointer dereference as LUN shutdown
code in core_tpg_remove_lun() continues running after the
existing ->release() -> core_tpg_lun_ref_release() callback
completes, and clears the RCU protected se_lun->lun_se_dev
pointer.
During the OOPs, the state of lun->lun_ref in the process
which triggered the NULL pointer dereference looks like
the following on v4.1.y stable code:
struct se_lun {
lun_link_magic = 4294932337,
lun_status = TRANSPORT_LUN_STATUS_FREE,
.....
lun_se_dev = 0x0,
lun_sep = 0x0,
.....
lun_ref = {
count = {
counter = 1
},
percpu_count_ptr = 3,
release = 0xffffffffa02fa1e0 <core_tpg_lun_ref_release>,
confirm_switch = 0x0,
force_atomic = false,
rcu = {
next = 0xffff88154fa1a5d0,
func = 0xffffffff8137c4c0 <percpu_ref_switch_to_atomic_rcu>
}
}
}
To address this bug, use percpu_ref_tryget_live() to ensure
once __PERCPU_REF_DEAD is visable on all CPUs and ->lun_ref
has switched to atomic_t, all new I/Os will fail to obtain
a new lun->lun_ref reference.
Also use an explicit percpu_ref_kill_and_confirm() callback
to block on ->lun_ref_comp to allow the first stage and
associated RCU grace period to complete, and then block on
->lun_ref_shutdown waiting for the final percpu_ref_put()
to drop the last reference via transport_lun_remove_cmd()
before continuing with core_tpg_remove_lun() shutdown.
Reported-by: Rob Millner <rlm@daterainc.com>
Tested-by: Rob Millner <rlm@daterainc.com>
Cc: Rob Millner <rlm@daterainc.com>
Tested-by: Vaibhav Tandon <vst@datera.io>
Cc: Vaibhav Tandon <vst@datera.io>
Tested-by: Bryant G. Ly <bryantly@linux.vnet.ibm.com>
Cc: <stable@vger.kernel.org> # v3.14+
Signed-off-by: Nicholas Bellinger <nab@linux-iscsi.org>
2017-02-23 14:06:32 +08:00
|
|
|
|
|
|
|
if (!percpu_ref_tryget_live(&se_lun->lun_ref)) {
|
|
|
|
se_lun = NULL;
|
|
|
|
goto out_unlock;
|
|
|
|
}
|
|
|
|
|
2015-03-23 11:42:19 +08:00
|
|
|
se_cmd->se_lun = rcu_dereference(deve->se_lun);
|
[SCSI] target: Add LIO target core v4.0.0-rc6
LIO target is a full featured in-kernel target framework with the
following feature set:
High-performance, non-blocking, multithreaded architecture with SIMD
support.
Advanced SCSI feature set:
* Persistent Reservations (PRs)
* Asymmetric Logical Unit Assignment (ALUA)
* Protocol and intra-nexus multiplexing, load-balancing and failover (MC/S)
* Full Error Recovery (ERL=0,1,2)
* Active/active task migration and session continuation (ERL=2)
* Thin LUN provisioning (UNMAP and WRITE_SAMExx)
Multiprotocol target plugins
Storage media independence:
* Virtualization of all storage media; transparent mapping of IO to LUNs
* No hard limits on number of LUNs per Target; maximum LUN size ~750 TB
* Backstores: SATA, SAS, SCSI, BluRay, DVD, FLASH, USB, ramdisk, etc.
Standards compliance:
* Full compliance with IETF (RFC 3720)
* Full implementation of SPC-4 PRs and ALUA
Significant code cleanups done by Christoph Hellwig.
[jejb: fix up for new block bdev exclusive interface. Minor fixes from
Randy Dunlap and Dan Carpenter.]
Signed-off-by: Nicholas A. Bellinger <nab@linux-iscsi.org>
Signed-off-by: James Bottomley <James.Bottomley@suse.de>
2010-12-18 03:11:26 +08:00
|
|
|
se_cmd->pr_res_key = deve->pr_res_key;
|
|
|
|
se_cmd->orig_fe_lun = unpacked_lun;
|
|
|
|
se_cmd->se_cmd_flags |= SCF_SE_LUN_CMD;
|
2013-11-07 13:03:43 +08:00
|
|
|
se_cmd->lun_ref_active = true;
|
2015-09-17 11:23:53 +08:00
|
|
|
|
|
|
|
if ((se_cmd->data_direction == DMA_TO_DEVICE) &&
|
2016-02-26 07:14:32 +08:00
|
|
|
deve->lun_access_ro) {
|
2015-09-17 11:23:53 +08:00
|
|
|
pr_err("TARGET_CORE[%s]: Detected WRITE_PROTECTED LUN"
|
|
|
|
" Access for 0x%08llx\n",
|
|
|
|
se_cmd->se_tfo->get_fabric_name(),
|
|
|
|
unpacked_lun);
|
|
|
|
rcu_read_unlock();
|
|
|
|
ret = TCM_WRITE_PROTECTED;
|
|
|
|
goto ref_dev;
|
|
|
|
}
|
[SCSI] target: Add LIO target core v4.0.0-rc6
LIO target is a full featured in-kernel target framework with the
following feature set:
High-performance, non-blocking, multithreaded architecture with SIMD
support.
Advanced SCSI feature set:
* Persistent Reservations (PRs)
* Asymmetric Logical Unit Assignment (ALUA)
* Protocol and intra-nexus multiplexing, load-balancing and failover (MC/S)
* Full Error Recovery (ERL=0,1,2)
* Active/active task migration and session continuation (ERL=2)
* Thin LUN provisioning (UNMAP and WRITE_SAMExx)
Multiprotocol target plugins
Storage media independence:
* Virtualization of all storage media; transparent mapping of IO to LUNs
* No hard limits on number of LUNs per Target; maximum LUN size ~750 TB
* Backstores: SATA, SAS, SCSI, BluRay, DVD, FLASH, USB, ramdisk, etc.
Standards compliance:
* Full compliance with IETF (RFC 3720)
* Full implementation of SPC-4 PRs and ALUA
Significant code cleanups done by Christoph Hellwig.
[jejb: fix up for new block bdev exclusive interface. Minor fixes from
Randy Dunlap and Dan Carpenter.]
Signed-off-by: Nicholas A. Bellinger <nab@linux-iscsi.org>
Signed-off-by: James Bottomley <James.Bottomley@suse.de>
2010-12-18 03:11:26 +08:00
|
|
|
}
|
target: Fix NULL dereference during LUN lookup + active I/O shutdown
When transport_clear_lun_ref() is shutting down a se_lun via
configfs with new I/O in-flight, it's possible to trigger a
NULL pointer dereference in transport_lookup_cmd_lun() due
to the fact percpu_ref_get() doesn't do any __PERCPU_REF_DEAD
checking before incrementing lun->lun_ref.count after
lun->lun_ref has switched to atomic_t mode.
This results in a NULL pointer dereference as LUN shutdown
code in core_tpg_remove_lun() continues running after the
existing ->release() -> core_tpg_lun_ref_release() callback
completes, and clears the RCU protected se_lun->lun_se_dev
pointer.
During the OOPs, the state of lun->lun_ref in the process
which triggered the NULL pointer dereference looks like
the following on v4.1.y stable code:
struct se_lun {
lun_link_magic = 4294932337,
lun_status = TRANSPORT_LUN_STATUS_FREE,
.....
lun_se_dev = 0x0,
lun_sep = 0x0,
.....
lun_ref = {
count = {
counter = 1
},
percpu_count_ptr = 3,
release = 0xffffffffa02fa1e0 <core_tpg_lun_ref_release>,
confirm_switch = 0x0,
force_atomic = false,
rcu = {
next = 0xffff88154fa1a5d0,
func = 0xffffffff8137c4c0 <percpu_ref_switch_to_atomic_rcu>
}
}
}
To address this bug, use percpu_ref_tryget_live() to ensure
once __PERCPU_REF_DEAD is visable on all CPUs and ->lun_ref
has switched to atomic_t, all new I/Os will fail to obtain
a new lun->lun_ref reference.
Also use an explicit percpu_ref_kill_and_confirm() callback
to block on ->lun_ref_comp to allow the first stage and
associated RCU grace period to complete, and then block on
->lun_ref_shutdown waiting for the final percpu_ref_put()
to drop the last reference via transport_lun_remove_cmd()
before continuing with core_tpg_remove_lun() shutdown.
Reported-by: Rob Millner <rlm@daterainc.com>
Tested-by: Rob Millner <rlm@daterainc.com>
Cc: Rob Millner <rlm@daterainc.com>
Tested-by: Vaibhav Tandon <vst@datera.io>
Cc: Vaibhav Tandon <vst@datera.io>
Tested-by: Bryant G. Ly <bryantly@linux.vnet.ibm.com>
Cc: <stable@vger.kernel.org> # v3.14+
Signed-off-by: Nicholas Bellinger <nab@linux-iscsi.org>
2017-02-23 14:06:32 +08:00
|
|
|
out_unlock:
|
2015-03-23 11:42:19 +08:00
|
|
|
rcu_read_unlock();
|
[SCSI] target: Add LIO target core v4.0.0-rc6
LIO target is a full featured in-kernel target framework with the
following feature set:
High-performance, non-blocking, multithreaded architecture with SIMD
support.
Advanced SCSI feature set:
* Persistent Reservations (PRs)
* Asymmetric Logical Unit Assignment (ALUA)
* Protocol and intra-nexus multiplexing, load-balancing and failover (MC/S)
* Full Error Recovery (ERL=0,1,2)
* Active/active task migration and session continuation (ERL=2)
* Thin LUN provisioning (UNMAP and WRITE_SAMExx)
Multiprotocol target plugins
Storage media independence:
* Virtualization of all storage media; transparent mapping of IO to LUNs
* No hard limits on number of LUNs per Target; maximum LUN size ~750 TB
* Backstores: SATA, SAS, SCSI, BluRay, DVD, FLASH, USB, ramdisk, etc.
Standards compliance:
* Full compliance with IETF (RFC 3720)
* Full implementation of SPC-4 PRs and ALUA
Significant code cleanups done by Christoph Hellwig.
[jejb: fix up for new block bdev exclusive interface. Minor fixes from
Randy Dunlap and Dan Carpenter.]
Signed-off-by: Nicholas A. Bellinger <nab@linux-iscsi.org>
Signed-off-by: James Bottomley <James.Bottomley@suse.de>
2010-12-18 03:11:26 +08:00
|
|
|
|
|
|
|
if (!se_lun) {
|
2011-07-19 18:26:37 +08:00
|
|
|
/*
|
|
|
|
* Use the se_portal_group->tpg_virt_lun0 to allow for
|
|
|
|
* REPORT_LUNS, et al to be returned when no active
|
|
|
|
* MappedLUN=0 exists for this Initiator Port.
|
|
|
|
*/
|
|
|
|
if (unpacked_lun != 0) {
|
2011-06-09 01:36:43 +08:00
|
|
|
pr_err("TARGET_CORE[%s]: Detected NON_EXISTENT_LUN"
|
2015-06-10 14:41:22 +08:00
|
|
|
" Access for 0x%08llx\n",
|
2011-07-19 16:55:10 +08:00
|
|
|
se_cmd->se_tfo->get_fabric_name(),
|
[SCSI] target: Add LIO target core v4.0.0-rc6
LIO target is a full featured in-kernel target framework with the
following feature set:
High-performance, non-blocking, multithreaded architecture with SIMD
support.
Advanced SCSI feature set:
* Persistent Reservations (PRs)
* Asymmetric Logical Unit Assignment (ALUA)
* Protocol and intra-nexus multiplexing, load-balancing and failover (MC/S)
* Full Error Recovery (ERL=0,1,2)
* Active/active task migration and session continuation (ERL=2)
* Thin LUN provisioning (UNMAP and WRITE_SAMExx)
Multiprotocol target plugins
Storage media independence:
* Virtualization of all storage media; transparent mapping of IO to LUNs
* No hard limits on number of LUNs per Target; maximum LUN size ~750 TB
* Backstores: SATA, SAS, SCSI, BluRay, DVD, FLASH, USB, ramdisk, etc.
Standards compliance:
* Full compliance with IETF (RFC 3720)
* Full implementation of SPC-4 PRs and ALUA
Significant code cleanups done by Christoph Hellwig.
[jejb: fix up for new block bdev exclusive interface. Minor fixes from
Randy Dunlap and Dan Carpenter.]
Signed-off-by: Nicholas A. Bellinger <nab@linux-iscsi.org>
Signed-off-by: James Bottomley <James.Bottomley@suse.de>
2010-12-18 03:11:26 +08:00
|
|
|
unpacked_lun);
|
2012-11-07 04:24:09 +08:00
|
|
|
return TCM_NON_EXISTENT_LUN;
|
2011-07-19 18:26:37 +08:00
|
|
|
}
|
|
|
|
|
2015-05-26 12:33:08 +08:00
|
|
|
se_lun = se_sess->se_tpg->tpg_virt_lun0;
|
|
|
|
se_cmd->se_lun = se_sess->se_tpg->tpg_virt_lun0;
|
2011-07-19 18:26:37 +08:00
|
|
|
se_cmd->orig_fe_lun = 0;
|
|
|
|
se_cmd->se_cmd_flags |= SCF_SE_LUN_CMD;
|
2013-11-07 13:03:43 +08:00
|
|
|
|
|
|
|
percpu_ref_get(&se_lun->lun_ref);
|
|
|
|
se_cmd->lun_ref_active = true;
|
2015-09-17 11:23:53 +08:00
|
|
|
|
|
|
|
/*
|
|
|
|
* Force WRITE PROTECT for virtual LUN 0
|
|
|
|
*/
|
|
|
|
if ((se_cmd->data_direction != DMA_FROM_DEVICE) &&
|
|
|
|
(se_cmd->data_direction != DMA_NONE)) {
|
|
|
|
ret = TCM_WRITE_PROTECTED;
|
|
|
|
goto ref_dev;
|
|
|
|
}
|
[SCSI] target: Add LIO target core v4.0.0-rc6
LIO target is a full featured in-kernel target framework with the
following feature set:
High-performance, non-blocking, multithreaded architecture with SIMD
support.
Advanced SCSI feature set:
* Persistent Reservations (PRs)
* Asymmetric Logical Unit Assignment (ALUA)
* Protocol and intra-nexus multiplexing, load-balancing and failover (MC/S)
* Full Error Recovery (ERL=0,1,2)
* Active/active task migration and session continuation (ERL=2)
* Thin LUN provisioning (UNMAP and WRITE_SAMExx)
Multiprotocol target plugins
Storage media independence:
* Virtualization of all storage media; transparent mapping of IO to LUNs
* No hard limits on number of LUNs per Target; maximum LUN size ~750 TB
* Backstores: SATA, SAS, SCSI, BluRay, DVD, FLASH, USB, ramdisk, etc.
Standards compliance:
* Full compliance with IETF (RFC 3720)
* Full implementation of SPC-4 PRs and ALUA
Significant code cleanups done by Christoph Hellwig.
[jejb: fix up for new block bdev exclusive interface. Minor fixes from
Randy Dunlap and Dan Carpenter.]
Signed-off-by: Nicholas A. Bellinger <nab@linux-iscsi.org>
Signed-off-by: James Bottomley <James.Bottomley@suse.de>
2010-12-18 03:11:26 +08:00
|
|
|
}
|
2015-05-19 15:03:07 +08:00
|
|
|
/*
|
|
|
|
* RCU reference protected by percpu se_lun->lun_ref taken above that
|
|
|
|
* must drop to zero (including initial reference) before this se_lun
|
|
|
|
* pointer can be kfree_rcu() by the final se_lun->lun_group put via
|
|
|
|
* target_core_fabric_configfs.c:target_fabric_port_release
|
|
|
|
*/
|
2015-09-17 11:23:53 +08:00
|
|
|
ref_dev:
|
2015-05-19 15:03:07 +08:00
|
|
|
se_cmd->se_dev = rcu_dereference_raw(se_lun->lun_se_dev);
|
|
|
|
atomic_long_inc(&se_cmd->se_dev->num_cmds);
|
[SCSI] target: Add LIO target core v4.0.0-rc6
LIO target is a full featured in-kernel target framework with the
following feature set:
High-performance, non-blocking, multithreaded architecture with SIMD
support.
Advanced SCSI feature set:
* Persistent Reservations (PRs)
* Asymmetric Logical Unit Assignment (ALUA)
* Protocol and intra-nexus multiplexing, load-balancing and failover (MC/S)
* Full Error Recovery (ERL=0,1,2)
* Active/active task migration and session continuation (ERL=2)
* Thin LUN provisioning (UNMAP and WRITE_SAMExx)
Multiprotocol target plugins
Storage media independence:
* Virtualization of all storage media; transparent mapping of IO to LUNs
* No hard limits on number of LUNs per Target; maximum LUN size ~750 TB
* Backstores: SATA, SAS, SCSI, BluRay, DVD, FLASH, USB, ramdisk, etc.
Standards compliance:
* Full compliance with IETF (RFC 3720)
* Full implementation of SPC-4 PRs and ALUA
Significant code cleanups done by Christoph Hellwig.
[jejb: fix up for new block bdev exclusive interface. Minor fixes from
Randy Dunlap and Dan Carpenter.]
Signed-off-by: Nicholas A. Bellinger <nab@linux-iscsi.org>
Signed-off-by: James Bottomley <James.Bottomley@suse.de>
2010-12-18 03:11:26 +08:00
|
|
|
|
|
|
|
if (se_cmd->data_direction == DMA_TO_DEVICE)
|
2015-05-19 15:03:07 +08:00
|
|
|
atomic_long_add(se_cmd->data_length,
|
|
|
|
&se_cmd->se_dev->write_bytes);
|
[SCSI] target: Add LIO target core v4.0.0-rc6
LIO target is a full featured in-kernel target framework with the
following feature set:
High-performance, non-blocking, multithreaded architecture with SIMD
support.
Advanced SCSI feature set:
* Persistent Reservations (PRs)
* Asymmetric Logical Unit Assignment (ALUA)
* Protocol and intra-nexus multiplexing, load-balancing and failover (MC/S)
* Full Error Recovery (ERL=0,1,2)
* Active/active task migration and session continuation (ERL=2)
* Thin LUN provisioning (UNMAP and WRITE_SAMExx)
Multiprotocol target plugins
Storage media independence:
* Virtualization of all storage media; transparent mapping of IO to LUNs
* No hard limits on number of LUNs per Target; maximum LUN size ~750 TB
* Backstores: SATA, SAS, SCSI, BluRay, DVD, FLASH, USB, ramdisk, etc.
Standards compliance:
* Full compliance with IETF (RFC 3720)
* Full implementation of SPC-4 PRs and ALUA
Significant code cleanups done by Christoph Hellwig.
[jejb: fix up for new block bdev exclusive interface. Minor fixes from
Randy Dunlap and Dan Carpenter.]
Signed-off-by: Nicholas A. Bellinger <nab@linux-iscsi.org>
Signed-off-by: James Bottomley <James.Bottomley@suse.de>
2010-12-18 03:11:26 +08:00
|
|
|
else if (se_cmd->data_direction == DMA_FROM_DEVICE)
|
2015-05-19 15:03:07 +08:00
|
|
|
atomic_long_add(se_cmd->data_length,
|
|
|
|
&se_cmd->se_dev->read_bytes);
|
[SCSI] target: Add LIO target core v4.0.0-rc6
LIO target is a full featured in-kernel target framework with the
following feature set:
High-performance, non-blocking, multithreaded architecture with SIMD
support.
Advanced SCSI feature set:
* Persistent Reservations (PRs)
* Asymmetric Logical Unit Assignment (ALUA)
* Protocol and intra-nexus multiplexing, load-balancing and failover (MC/S)
* Full Error Recovery (ERL=0,1,2)
* Active/active task migration and session continuation (ERL=2)
* Thin LUN provisioning (UNMAP and WRITE_SAMExx)
Multiprotocol target plugins
Storage media independence:
* Virtualization of all storage media; transparent mapping of IO to LUNs
* No hard limits on number of LUNs per Target; maximum LUN size ~750 TB
* Backstores: SATA, SAS, SCSI, BluRay, DVD, FLASH, USB, ramdisk, etc.
Standards compliance:
* Full compliance with IETF (RFC 3720)
* Full implementation of SPC-4 PRs and ALUA
Significant code cleanups done by Christoph Hellwig.
[jejb: fix up for new block bdev exclusive interface. Minor fixes from
Randy Dunlap and Dan Carpenter.]
Signed-off-by: Nicholas A. Bellinger <nab@linux-iscsi.org>
Signed-off-by: James Bottomley <James.Bottomley@suse.de>
2010-12-18 03:11:26 +08:00
|
|
|
|
2015-09-17 11:23:53 +08:00
|
|
|
return ret;
|
[SCSI] target: Add LIO target core v4.0.0-rc6
LIO target is a full featured in-kernel target framework with the
following feature set:
High-performance, non-blocking, multithreaded architecture with SIMD
support.
Advanced SCSI feature set:
* Persistent Reservations (PRs)
* Asymmetric Logical Unit Assignment (ALUA)
* Protocol and intra-nexus multiplexing, load-balancing and failover (MC/S)
* Full Error Recovery (ERL=0,1,2)
* Active/active task migration and session continuation (ERL=2)
* Thin LUN provisioning (UNMAP and WRITE_SAMExx)
Multiprotocol target plugins
Storage media independence:
* Virtualization of all storage media; transparent mapping of IO to LUNs
* No hard limits on number of LUNs per Target; maximum LUN size ~750 TB
* Backstores: SATA, SAS, SCSI, BluRay, DVD, FLASH, USB, ramdisk, etc.
Standards compliance:
* Full compliance with IETF (RFC 3720)
* Full implementation of SPC-4 PRs and ALUA
Significant code cleanups done by Christoph Hellwig.
[jejb: fix up for new block bdev exclusive interface. Minor fixes from
Randy Dunlap and Dan Carpenter.]
Signed-off-by: Nicholas A. Bellinger <nab@linux-iscsi.org>
Signed-off-by: James Bottomley <James.Bottomley@suse.de>
2010-12-18 03:11:26 +08:00
|
|
|
}
|
2011-07-19 18:26:37 +08:00
|
|
|
EXPORT_SYMBOL(transport_lookup_cmd_lun);
|
[SCSI] target: Add LIO target core v4.0.0-rc6
LIO target is a full featured in-kernel target framework with the
following feature set:
High-performance, non-blocking, multithreaded architecture with SIMD
support.
Advanced SCSI feature set:
* Persistent Reservations (PRs)
* Asymmetric Logical Unit Assignment (ALUA)
* Protocol and intra-nexus multiplexing, load-balancing and failover (MC/S)
* Full Error Recovery (ERL=0,1,2)
* Active/active task migration and session continuation (ERL=2)
* Thin LUN provisioning (UNMAP and WRITE_SAMExx)
Multiprotocol target plugins
Storage media independence:
* Virtualization of all storage media; transparent mapping of IO to LUNs
* No hard limits on number of LUNs per Target; maximum LUN size ~750 TB
* Backstores: SATA, SAS, SCSI, BluRay, DVD, FLASH, USB, ramdisk, etc.
Standards compliance:
* Full compliance with IETF (RFC 3720)
* Full implementation of SPC-4 PRs and ALUA
Significant code cleanups done by Christoph Hellwig.
[jejb: fix up for new block bdev exclusive interface. Minor fixes from
Randy Dunlap and Dan Carpenter.]
Signed-off-by: Nicholas A. Bellinger <nab@linux-iscsi.org>
Signed-off-by: James Bottomley <James.Bottomley@suse.de>
2010-12-18 03:11:26 +08:00
|
|
|
|
2015-06-10 14:41:22 +08:00
|
|
|
int transport_lookup_tmr_lun(struct se_cmd *se_cmd, u64 unpacked_lun)
|
[SCSI] target: Add LIO target core v4.0.0-rc6
LIO target is a full featured in-kernel target framework with the
following feature set:
High-performance, non-blocking, multithreaded architecture with SIMD
support.
Advanced SCSI feature set:
* Persistent Reservations (PRs)
* Asymmetric Logical Unit Assignment (ALUA)
* Protocol and intra-nexus multiplexing, load-balancing and failover (MC/S)
* Full Error Recovery (ERL=0,1,2)
* Active/active task migration and session continuation (ERL=2)
* Thin LUN provisioning (UNMAP and WRITE_SAMExx)
Multiprotocol target plugins
Storage media independence:
* Virtualization of all storage media; transparent mapping of IO to LUNs
* No hard limits on number of LUNs per Target; maximum LUN size ~750 TB
* Backstores: SATA, SAS, SCSI, BluRay, DVD, FLASH, USB, ramdisk, etc.
Standards compliance:
* Full compliance with IETF (RFC 3720)
* Full implementation of SPC-4 PRs and ALUA
Significant code cleanups done by Christoph Hellwig.
[jejb: fix up for new block bdev exclusive interface. Minor fixes from
Randy Dunlap and Dan Carpenter.]
Signed-off-by: Nicholas A. Bellinger <nab@linux-iscsi.org>
Signed-off-by: James Bottomley <James.Bottomley@suse.de>
2010-12-18 03:11:26 +08:00
|
|
|
{
|
|
|
|
struct se_dev_entry *deve;
|
|
|
|
struct se_lun *se_lun = NULL;
|
2011-07-19 16:55:10 +08:00
|
|
|
struct se_session *se_sess = se_cmd->se_sess;
|
2015-03-23 11:42:19 +08:00
|
|
|
struct se_node_acl *nacl = se_sess->se_node_acl;
|
[SCSI] target: Add LIO target core v4.0.0-rc6
LIO target is a full featured in-kernel target framework with the
following feature set:
High-performance, non-blocking, multithreaded architecture with SIMD
support.
Advanced SCSI feature set:
* Persistent Reservations (PRs)
* Asymmetric Logical Unit Assignment (ALUA)
* Protocol and intra-nexus multiplexing, load-balancing and failover (MC/S)
* Full Error Recovery (ERL=0,1,2)
* Active/active task migration and session continuation (ERL=2)
* Thin LUN provisioning (UNMAP and WRITE_SAMExx)
Multiprotocol target plugins
Storage media independence:
* Virtualization of all storage media; transparent mapping of IO to LUNs
* No hard limits on number of LUNs per Target; maximum LUN size ~750 TB
* Backstores: SATA, SAS, SCSI, BluRay, DVD, FLASH, USB, ramdisk, etc.
Standards compliance:
* Full compliance with IETF (RFC 3720)
* Full implementation of SPC-4 PRs and ALUA
Significant code cleanups done by Christoph Hellwig.
[jejb: fix up for new block bdev exclusive interface. Minor fixes from
Randy Dunlap and Dan Carpenter.]
Signed-off-by: Nicholas A. Bellinger <nab@linux-iscsi.org>
Signed-off-by: James Bottomley <James.Bottomley@suse.de>
2010-12-18 03:11:26 +08:00
|
|
|
struct se_tmr_req *se_tmr = se_cmd->se_tmr_req;
|
2011-07-20 17:28:56 +08:00
|
|
|
unsigned long flags;
|
[SCSI] target: Add LIO target core v4.0.0-rc6
LIO target is a full featured in-kernel target framework with the
following feature set:
High-performance, non-blocking, multithreaded architecture with SIMD
support.
Advanced SCSI feature set:
* Persistent Reservations (PRs)
* Asymmetric Logical Unit Assignment (ALUA)
* Protocol and intra-nexus multiplexing, load-balancing and failover (MC/S)
* Full Error Recovery (ERL=0,1,2)
* Active/active task migration and session continuation (ERL=2)
* Thin LUN provisioning (UNMAP and WRITE_SAMExx)
Multiprotocol target plugins
Storage media independence:
* Virtualization of all storage media; transparent mapping of IO to LUNs
* No hard limits on number of LUNs per Target; maximum LUN size ~750 TB
* Backstores: SATA, SAS, SCSI, BluRay, DVD, FLASH, USB, ramdisk, etc.
Standards compliance:
* Full compliance with IETF (RFC 3720)
* Full implementation of SPC-4 PRs and ALUA
Significant code cleanups done by Christoph Hellwig.
[jejb: fix up for new block bdev exclusive interface. Minor fixes from
Randy Dunlap and Dan Carpenter.]
Signed-off-by: Nicholas A. Bellinger <nab@linux-iscsi.org>
Signed-off-by: James Bottomley <James.Bottomley@suse.de>
2010-12-18 03:11:26 +08:00
|
|
|
|
2015-03-23 11:42:19 +08:00
|
|
|
rcu_read_lock();
|
|
|
|
deve = target_nacl_find_deve(nacl, unpacked_lun);
|
|
|
|
if (deve) {
|
|
|
|
se_lun = rcu_dereference(deve->se_lun);
|
2017-06-03 21:41:03 +08:00
|
|
|
|
|
|
|
if (!percpu_ref_tryget_live(&se_lun->lun_ref)) {
|
|
|
|
se_lun = NULL;
|
|
|
|
goto out_unlock;
|
|
|
|
}
|
|
|
|
|
|
|
|
se_cmd->se_lun = rcu_dereference(deve->se_lun);
|
[SCSI] target: Add LIO target core v4.0.0-rc6
LIO target is a full featured in-kernel target framework with the
following feature set:
High-performance, non-blocking, multithreaded architecture with SIMD
support.
Advanced SCSI feature set:
* Persistent Reservations (PRs)
* Asymmetric Logical Unit Assignment (ALUA)
* Protocol and intra-nexus multiplexing, load-balancing and failover (MC/S)
* Full Error Recovery (ERL=0,1,2)
* Active/active task migration and session continuation (ERL=2)
* Thin LUN provisioning (UNMAP and WRITE_SAMExx)
Multiprotocol target plugins
Storage media independence:
* Virtualization of all storage media; transparent mapping of IO to LUNs
* No hard limits on number of LUNs per Target; maximum LUN size ~750 TB
* Backstores: SATA, SAS, SCSI, BluRay, DVD, FLASH, USB, ramdisk, etc.
Standards compliance:
* Full compliance with IETF (RFC 3720)
* Full implementation of SPC-4 PRs and ALUA
Significant code cleanups done by Christoph Hellwig.
[jejb: fix up for new block bdev exclusive interface. Minor fixes from
Randy Dunlap and Dan Carpenter.]
Signed-off-by: Nicholas A. Bellinger <nab@linux-iscsi.org>
Signed-off-by: James Bottomley <James.Bottomley@suse.de>
2010-12-18 03:11:26 +08:00
|
|
|
se_cmd->pr_res_key = deve->pr_res_key;
|
|
|
|
se_cmd->orig_fe_lun = unpacked_lun;
|
2017-06-03 21:41:03 +08:00
|
|
|
se_cmd->se_cmd_flags |= SCF_SE_LUN_CMD;
|
|
|
|
se_cmd->lun_ref_active = true;
|
[SCSI] target: Add LIO target core v4.0.0-rc6
LIO target is a full featured in-kernel target framework with the
following feature set:
High-performance, non-blocking, multithreaded architecture with SIMD
support.
Advanced SCSI feature set:
* Persistent Reservations (PRs)
* Asymmetric Logical Unit Assignment (ALUA)
* Protocol and intra-nexus multiplexing, load-balancing and failover (MC/S)
* Full Error Recovery (ERL=0,1,2)
* Active/active task migration and session continuation (ERL=2)
* Thin LUN provisioning (UNMAP and WRITE_SAMExx)
Multiprotocol target plugins
Storage media independence:
* Virtualization of all storage media; transparent mapping of IO to LUNs
* No hard limits on number of LUNs per Target; maximum LUN size ~750 TB
* Backstores: SATA, SAS, SCSI, BluRay, DVD, FLASH, USB, ramdisk, etc.
Standards compliance:
* Full compliance with IETF (RFC 3720)
* Full implementation of SPC-4 PRs and ALUA
Significant code cleanups done by Christoph Hellwig.
[jejb: fix up for new block bdev exclusive interface. Minor fixes from
Randy Dunlap and Dan Carpenter.]
Signed-off-by: Nicholas A. Bellinger <nab@linux-iscsi.org>
Signed-off-by: James Bottomley <James.Bottomley@suse.de>
2010-12-18 03:11:26 +08:00
|
|
|
}
|
2017-06-03 21:41:03 +08:00
|
|
|
out_unlock:
|
2015-03-23 11:42:19 +08:00
|
|
|
rcu_read_unlock();
|
[SCSI] target: Add LIO target core v4.0.0-rc6
LIO target is a full featured in-kernel target framework with the
following feature set:
High-performance, non-blocking, multithreaded architecture with SIMD
support.
Advanced SCSI feature set:
* Persistent Reservations (PRs)
* Asymmetric Logical Unit Assignment (ALUA)
* Protocol and intra-nexus multiplexing, load-balancing and failover (MC/S)
* Full Error Recovery (ERL=0,1,2)
* Active/active task migration and session continuation (ERL=2)
* Thin LUN provisioning (UNMAP and WRITE_SAMExx)
Multiprotocol target plugins
Storage media independence:
* Virtualization of all storage media; transparent mapping of IO to LUNs
* No hard limits on number of LUNs per Target; maximum LUN size ~750 TB
* Backstores: SATA, SAS, SCSI, BluRay, DVD, FLASH, USB, ramdisk, etc.
Standards compliance:
* Full compliance with IETF (RFC 3720)
* Full implementation of SPC-4 PRs and ALUA
Significant code cleanups done by Christoph Hellwig.
[jejb: fix up for new block bdev exclusive interface. Minor fixes from
Randy Dunlap and Dan Carpenter.]
Signed-off-by: Nicholas A. Bellinger <nab@linux-iscsi.org>
Signed-off-by: James Bottomley <James.Bottomley@suse.de>
2010-12-18 03:11:26 +08:00
|
|
|
|
|
|
|
if (!se_lun) {
|
2011-06-09 01:36:43 +08:00
|
|
|
pr_debug("TARGET_CORE[%s]: Detected NON_EXISTENT_LUN"
|
2015-06-10 14:41:22 +08:00
|
|
|
" Access for 0x%08llx\n",
|
2011-07-19 16:55:10 +08:00
|
|
|
se_cmd->se_tfo->get_fabric_name(),
|
[SCSI] target: Add LIO target core v4.0.0-rc6
LIO target is a full featured in-kernel target framework with the
following feature set:
High-performance, non-blocking, multithreaded architecture with SIMD
support.
Advanced SCSI feature set:
* Persistent Reservations (PRs)
* Asymmetric Logical Unit Assignment (ALUA)
* Protocol and intra-nexus multiplexing, load-balancing and failover (MC/S)
* Full Error Recovery (ERL=0,1,2)
* Active/active task migration and session continuation (ERL=2)
* Thin LUN provisioning (UNMAP and WRITE_SAMExx)
Multiprotocol target plugins
Storage media independence:
* Virtualization of all storage media; transparent mapping of IO to LUNs
* No hard limits on number of LUNs per Target; maximum LUN size ~750 TB
* Backstores: SATA, SAS, SCSI, BluRay, DVD, FLASH, USB, ramdisk, etc.
Standards compliance:
* Full compliance with IETF (RFC 3720)
* Full implementation of SPC-4 PRs and ALUA
Significant code cleanups done by Christoph Hellwig.
[jejb: fix up for new block bdev exclusive interface. Minor fixes from
Randy Dunlap and Dan Carpenter.]
Signed-off-by: Nicholas A. Bellinger <nab@linux-iscsi.org>
Signed-off-by: James Bottomley <James.Bottomley@suse.de>
2010-12-18 03:11:26 +08:00
|
|
|
unpacked_lun);
|
2011-07-19 16:55:10 +08:00
|
|
|
return -ENODEV;
|
[SCSI] target: Add LIO target core v4.0.0-rc6
LIO target is a full featured in-kernel target framework with the
following feature set:
High-performance, non-blocking, multithreaded architecture with SIMD
support.
Advanced SCSI feature set:
* Persistent Reservations (PRs)
* Asymmetric Logical Unit Assignment (ALUA)
* Protocol and intra-nexus multiplexing, load-balancing and failover (MC/S)
* Full Error Recovery (ERL=0,1,2)
* Active/active task migration and session continuation (ERL=2)
* Thin LUN provisioning (UNMAP and WRITE_SAMExx)
Multiprotocol target plugins
Storage media independence:
* Virtualization of all storage media; transparent mapping of IO to LUNs
* No hard limits on number of LUNs per Target; maximum LUN size ~750 TB
* Backstores: SATA, SAS, SCSI, BluRay, DVD, FLASH, USB, ramdisk, etc.
Standards compliance:
* Full compliance with IETF (RFC 3720)
* Full implementation of SPC-4 PRs and ALUA
Significant code cleanups done by Christoph Hellwig.
[jejb: fix up for new block bdev exclusive interface. Minor fixes from
Randy Dunlap and Dan Carpenter.]
Signed-off-by: Nicholas A. Bellinger <nab@linux-iscsi.org>
Signed-off-by: James Bottomley <James.Bottomley@suse.de>
2010-12-18 03:11:26 +08:00
|
|
|
}
|
2015-05-19 15:03:07 +08:00
|
|
|
se_cmd->se_dev = rcu_dereference_raw(se_lun->lun_se_dev);
|
|
|
|
se_tmr->tmr_dev = rcu_dereference_raw(se_lun->lun_se_dev);
|
2011-07-19 18:26:37 +08:00
|
|
|
|
2011-07-20 17:28:56 +08:00
|
|
|
spin_lock_irqsave(&se_tmr->tmr_dev->se_tmr_lock, flags);
|
2011-07-19 18:26:37 +08:00
|
|
|
list_add_tail(&se_tmr->tmr_list, &se_tmr->tmr_dev->dev_tmr_list);
|
2011-07-20 17:28:56 +08:00
|
|
|
spin_unlock_irqrestore(&se_tmr->tmr_dev->se_tmr_lock, flags);
|
[SCSI] target: Add LIO target core v4.0.0-rc6
LIO target is a full featured in-kernel target framework with the
following feature set:
High-performance, non-blocking, multithreaded architecture with SIMD
support.
Advanced SCSI feature set:
* Persistent Reservations (PRs)
* Asymmetric Logical Unit Assignment (ALUA)
* Protocol and intra-nexus multiplexing, load-balancing and failover (MC/S)
* Full Error Recovery (ERL=0,1,2)
* Active/active task migration and session continuation (ERL=2)
* Thin LUN provisioning (UNMAP and WRITE_SAMExx)
Multiprotocol target plugins
Storage media independence:
* Virtualization of all storage media; transparent mapping of IO to LUNs
* No hard limits on number of LUNs per Target; maximum LUN size ~750 TB
* Backstores: SATA, SAS, SCSI, BluRay, DVD, FLASH, USB, ramdisk, etc.
Standards compliance:
* Full compliance with IETF (RFC 3720)
* Full implementation of SPC-4 PRs and ALUA
Significant code cleanups done by Christoph Hellwig.
[jejb: fix up for new block bdev exclusive interface. Minor fixes from
Randy Dunlap and Dan Carpenter.]
Signed-off-by: Nicholas A. Bellinger <nab@linux-iscsi.org>
Signed-off-by: James Bottomley <James.Bottomley@suse.de>
2010-12-18 03:11:26 +08:00
|
|
|
|
|
|
|
return 0;
|
|
|
|
}
|
2011-07-19 18:26:37 +08:00
|
|
|
EXPORT_SYMBOL(transport_lookup_tmr_lun);
|
[SCSI] target: Add LIO target core v4.0.0-rc6
LIO target is a full featured in-kernel target framework with the
following feature set:
High-performance, non-blocking, multithreaded architecture with SIMD
support.
Advanced SCSI feature set:
* Persistent Reservations (PRs)
* Asymmetric Logical Unit Assignment (ALUA)
* Protocol and intra-nexus multiplexing, load-balancing and failover (MC/S)
* Full Error Recovery (ERL=0,1,2)
* Active/active task migration and session continuation (ERL=2)
* Thin LUN provisioning (UNMAP and WRITE_SAMExx)
Multiprotocol target plugins
Storage media independence:
* Virtualization of all storage media; transparent mapping of IO to LUNs
* No hard limits on number of LUNs per Target; maximum LUN size ~750 TB
* Backstores: SATA, SAS, SCSI, BluRay, DVD, FLASH, USB, ramdisk, etc.
Standards compliance:
* Full compliance with IETF (RFC 3720)
* Full implementation of SPC-4 PRs and ALUA
Significant code cleanups done by Christoph Hellwig.
[jejb: fix up for new block bdev exclusive interface. Minor fixes from
Randy Dunlap and Dan Carpenter.]
Signed-off-by: Nicholas A. Bellinger <nab@linux-iscsi.org>
Signed-off-by: James Bottomley <James.Bottomley@suse.de>
2010-12-18 03:11:26 +08:00
|
|
|
|
2015-03-23 11:42:19 +08:00
|
|
|
bool target_lun_is_rdonly(struct se_cmd *cmd)
|
|
|
|
{
|
|
|
|
struct se_session *se_sess = cmd->se_sess;
|
|
|
|
struct se_dev_entry *deve;
|
|
|
|
bool ret;
|
|
|
|
|
|
|
|
rcu_read_lock();
|
|
|
|
deve = target_nacl_find_deve(se_sess->se_node_acl, cmd->orig_fe_lun);
|
2016-02-26 07:14:32 +08:00
|
|
|
ret = deve && deve->lun_access_ro;
|
2015-03-23 11:42:19 +08:00
|
|
|
rcu_read_unlock();
|
|
|
|
|
|
|
|
return ret;
|
|
|
|
}
|
|
|
|
EXPORT_SYMBOL(target_lun_is_rdonly);
|
|
|
|
|
[SCSI] target: Add LIO target core v4.0.0-rc6
LIO target is a full featured in-kernel target framework with the
following feature set:
High-performance, non-blocking, multithreaded architecture with SIMD
support.
Advanced SCSI feature set:
* Persistent Reservations (PRs)
* Asymmetric Logical Unit Assignment (ALUA)
* Protocol and intra-nexus multiplexing, load-balancing and failover (MC/S)
* Full Error Recovery (ERL=0,1,2)
* Active/active task migration and session continuation (ERL=2)
* Thin LUN provisioning (UNMAP and WRITE_SAMExx)
Multiprotocol target plugins
Storage media independence:
* Virtualization of all storage media; transparent mapping of IO to LUNs
* No hard limits on number of LUNs per Target; maximum LUN size ~750 TB
* Backstores: SATA, SAS, SCSI, BluRay, DVD, FLASH, USB, ramdisk, etc.
Standards compliance:
* Full compliance with IETF (RFC 3720)
* Full implementation of SPC-4 PRs and ALUA
Significant code cleanups done by Christoph Hellwig.
[jejb: fix up for new block bdev exclusive interface. Minor fixes from
Randy Dunlap and Dan Carpenter.]
Signed-off-by: Nicholas A. Bellinger <nab@linux-iscsi.org>
Signed-off-by: James Bottomley <James.Bottomley@suse.de>
2010-12-18 03:11:26 +08:00
|
|
|
/*
|
|
|
|
* This function is called from core_scsi3_emulate_pro_register_and_move()
|
2015-03-23 11:42:19 +08:00
|
|
|
* and core_scsi3_decode_spec_i_port(), and will increment &deve->pr_kref
|
[SCSI] target: Add LIO target core v4.0.0-rc6
LIO target is a full featured in-kernel target framework with the
following feature set:
High-performance, non-blocking, multithreaded architecture with SIMD
support.
Advanced SCSI feature set:
* Persistent Reservations (PRs)
* Asymmetric Logical Unit Assignment (ALUA)
* Protocol and intra-nexus multiplexing, load-balancing and failover (MC/S)
* Full Error Recovery (ERL=0,1,2)
* Active/active task migration and session continuation (ERL=2)
* Thin LUN provisioning (UNMAP and WRITE_SAMExx)
Multiprotocol target plugins
Storage media independence:
* Virtualization of all storage media; transparent mapping of IO to LUNs
* No hard limits on number of LUNs per Target; maximum LUN size ~750 TB
* Backstores: SATA, SAS, SCSI, BluRay, DVD, FLASH, USB, ramdisk, etc.
Standards compliance:
* Full compliance with IETF (RFC 3720)
* Full implementation of SPC-4 PRs and ALUA
Significant code cleanups done by Christoph Hellwig.
[jejb: fix up for new block bdev exclusive interface. Minor fixes from
Randy Dunlap and Dan Carpenter.]
Signed-off-by: Nicholas A. Bellinger <nab@linux-iscsi.org>
Signed-off-by: James Bottomley <James.Bottomley@suse.de>
2010-12-18 03:11:26 +08:00
|
|
|
* when a matching rtpi is found.
|
|
|
|
*/
|
|
|
|
struct se_dev_entry *core_get_se_deve_from_rtpi(
|
|
|
|
struct se_node_acl *nacl,
|
|
|
|
u16 rtpi)
|
|
|
|
{
|
|
|
|
struct se_dev_entry *deve;
|
|
|
|
struct se_lun *lun;
|
|
|
|
struct se_portal_group *tpg = nacl->se_tpg;
|
|
|
|
|
2015-03-23 11:42:19 +08:00
|
|
|
rcu_read_lock();
|
|
|
|
hlist_for_each_entry_rcu(deve, &nacl->lun_entry_hlist, link) {
|
|
|
|
lun = rcu_dereference(deve->se_lun);
|
2011-06-09 01:36:43 +08:00
|
|
|
if (!lun) {
|
|
|
|
pr_err("%s device entries device pointer is"
|
[SCSI] target: Add LIO target core v4.0.0-rc6
LIO target is a full featured in-kernel target framework with the
following feature set:
High-performance, non-blocking, multithreaded architecture with SIMD
support.
Advanced SCSI feature set:
* Persistent Reservations (PRs)
* Asymmetric Logical Unit Assignment (ALUA)
* Protocol and intra-nexus multiplexing, load-balancing and failover (MC/S)
* Full Error Recovery (ERL=0,1,2)
* Active/active task migration and session continuation (ERL=2)
* Thin LUN provisioning (UNMAP and WRITE_SAMExx)
Multiprotocol target plugins
Storage media independence:
* Virtualization of all storage media; transparent mapping of IO to LUNs
* No hard limits on number of LUNs per Target; maximum LUN size ~750 TB
* Backstores: SATA, SAS, SCSI, BluRay, DVD, FLASH, USB, ramdisk, etc.
Standards compliance:
* Full compliance with IETF (RFC 3720)
* Full implementation of SPC-4 PRs and ALUA
Significant code cleanups done by Christoph Hellwig.
[jejb: fix up for new block bdev exclusive interface. Minor fixes from
Randy Dunlap and Dan Carpenter.]
Signed-off-by: Nicholas A. Bellinger <nab@linux-iscsi.org>
Signed-off-by: James Bottomley <James.Bottomley@suse.de>
2010-12-18 03:11:26 +08:00
|
|
|
" NULL, but Initiator has access.\n",
|
2011-07-19 16:55:10 +08:00
|
|
|
tpg->se_tpg_tfo->get_fabric_name());
|
[SCSI] target: Add LIO target core v4.0.0-rc6
LIO target is a full featured in-kernel target framework with the
following feature set:
High-performance, non-blocking, multithreaded architecture with SIMD
support.
Advanced SCSI feature set:
* Persistent Reservations (PRs)
* Asymmetric Logical Unit Assignment (ALUA)
* Protocol and intra-nexus multiplexing, load-balancing and failover (MC/S)
* Full Error Recovery (ERL=0,1,2)
* Active/active task migration and session continuation (ERL=2)
* Thin LUN provisioning (UNMAP and WRITE_SAMExx)
Multiprotocol target plugins
Storage media independence:
* Virtualization of all storage media; transparent mapping of IO to LUNs
* No hard limits on number of LUNs per Target; maximum LUN size ~750 TB
* Backstores: SATA, SAS, SCSI, BluRay, DVD, FLASH, USB, ramdisk, etc.
Standards compliance:
* Full compliance with IETF (RFC 3720)
* Full implementation of SPC-4 PRs and ALUA
Significant code cleanups done by Christoph Hellwig.
[jejb: fix up for new block bdev exclusive interface. Minor fixes from
Randy Dunlap and Dan Carpenter.]
Signed-off-by: Nicholas A. Bellinger <nab@linux-iscsi.org>
Signed-off-by: James Bottomley <James.Bottomley@suse.de>
2010-12-18 03:11:26 +08:00
|
|
|
continue;
|
|
|
|
}
|
2015-03-23 11:42:19 +08:00
|
|
|
if (lun->lun_rtpi != rtpi)
|
[SCSI] target: Add LIO target core v4.0.0-rc6
LIO target is a full featured in-kernel target framework with the
following feature set:
High-performance, non-blocking, multithreaded architecture with SIMD
support.
Advanced SCSI feature set:
* Persistent Reservations (PRs)
* Asymmetric Logical Unit Assignment (ALUA)
* Protocol and intra-nexus multiplexing, load-balancing and failover (MC/S)
* Full Error Recovery (ERL=0,1,2)
* Active/active task migration and session continuation (ERL=2)
* Thin LUN provisioning (UNMAP and WRITE_SAMExx)
Multiprotocol target plugins
Storage media independence:
* Virtualization of all storage media; transparent mapping of IO to LUNs
* No hard limits on number of LUNs per Target; maximum LUN size ~750 TB
* Backstores: SATA, SAS, SCSI, BluRay, DVD, FLASH, USB, ramdisk, etc.
Standards compliance:
* Full compliance with IETF (RFC 3720)
* Full implementation of SPC-4 PRs and ALUA
Significant code cleanups done by Christoph Hellwig.
[jejb: fix up for new block bdev exclusive interface. Minor fixes from
Randy Dunlap and Dan Carpenter.]
Signed-off-by: Nicholas A. Bellinger <nab@linux-iscsi.org>
Signed-off-by: James Bottomley <James.Bottomley@suse.de>
2010-12-18 03:11:26 +08:00
|
|
|
continue;
|
|
|
|
|
2015-03-23 11:42:19 +08:00
|
|
|
kref_get(&deve->pr_kref);
|
|
|
|
rcu_read_unlock();
|
[SCSI] target: Add LIO target core v4.0.0-rc6
LIO target is a full featured in-kernel target framework with the
following feature set:
High-performance, non-blocking, multithreaded architecture with SIMD
support.
Advanced SCSI feature set:
* Persistent Reservations (PRs)
* Asymmetric Logical Unit Assignment (ALUA)
* Protocol and intra-nexus multiplexing, load-balancing and failover (MC/S)
* Full Error Recovery (ERL=0,1,2)
* Active/active task migration and session continuation (ERL=2)
* Thin LUN provisioning (UNMAP and WRITE_SAMExx)
Multiprotocol target plugins
Storage media independence:
* Virtualization of all storage media; transparent mapping of IO to LUNs
* No hard limits on number of LUNs per Target; maximum LUN size ~750 TB
* Backstores: SATA, SAS, SCSI, BluRay, DVD, FLASH, USB, ramdisk, etc.
Standards compliance:
* Full compliance with IETF (RFC 3720)
* Full implementation of SPC-4 PRs and ALUA
Significant code cleanups done by Christoph Hellwig.
[jejb: fix up for new block bdev exclusive interface. Minor fixes from
Randy Dunlap and Dan Carpenter.]
Signed-off-by: Nicholas A. Bellinger <nab@linux-iscsi.org>
Signed-off-by: James Bottomley <James.Bottomley@suse.de>
2010-12-18 03:11:26 +08:00
|
|
|
|
|
|
|
return deve;
|
|
|
|
}
|
2015-03-23 11:42:19 +08:00
|
|
|
rcu_read_unlock();
|
[SCSI] target: Add LIO target core v4.0.0-rc6
LIO target is a full featured in-kernel target framework with the
following feature set:
High-performance, non-blocking, multithreaded architecture with SIMD
support.
Advanced SCSI feature set:
* Persistent Reservations (PRs)
* Asymmetric Logical Unit Assignment (ALUA)
* Protocol and intra-nexus multiplexing, load-balancing and failover (MC/S)
* Full Error Recovery (ERL=0,1,2)
* Active/active task migration and session continuation (ERL=2)
* Thin LUN provisioning (UNMAP and WRITE_SAMExx)
Multiprotocol target plugins
Storage media independence:
* Virtualization of all storage media; transparent mapping of IO to LUNs
* No hard limits on number of LUNs per Target; maximum LUN size ~750 TB
* Backstores: SATA, SAS, SCSI, BluRay, DVD, FLASH, USB, ramdisk, etc.
Standards compliance:
* Full compliance with IETF (RFC 3720)
* Full implementation of SPC-4 PRs and ALUA
Significant code cleanups done by Christoph Hellwig.
[jejb: fix up for new block bdev exclusive interface. Minor fixes from
Randy Dunlap and Dan Carpenter.]
Signed-off-by: Nicholas A. Bellinger <nab@linux-iscsi.org>
Signed-off-by: James Bottomley <James.Bottomley@suse.de>
2010-12-18 03:11:26 +08:00
|
|
|
|
|
|
|
return NULL;
|
|
|
|
}
|
|
|
|
|
2015-03-23 11:42:19 +08:00
|
|
|
void core_free_device_list_for_node(
|
[SCSI] target: Add LIO target core v4.0.0-rc6
LIO target is a full featured in-kernel target framework with the
following feature set:
High-performance, non-blocking, multithreaded architecture with SIMD
support.
Advanced SCSI feature set:
* Persistent Reservations (PRs)
* Asymmetric Logical Unit Assignment (ALUA)
* Protocol and intra-nexus multiplexing, load-balancing and failover (MC/S)
* Full Error Recovery (ERL=0,1,2)
* Active/active task migration and session continuation (ERL=2)
* Thin LUN provisioning (UNMAP and WRITE_SAMExx)
Multiprotocol target plugins
Storage media independence:
* Virtualization of all storage media; transparent mapping of IO to LUNs
* No hard limits on number of LUNs per Target; maximum LUN size ~750 TB
* Backstores: SATA, SAS, SCSI, BluRay, DVD, FLASH, USB, ramdisk, etc.
Standards compliance:
* Full compliance with IETF (RFC 3720)
* Full implementation of SPC-4 PRs and ALUA
Significant code cleanups done by Christoph Hellwig.
[jejb: fix up for new block bdev exclusive interface. Minor fixes from
Randy Dunlap and Dan Carpenter.]
Signed-off-by: Nicholas A. Bellinger <nab@linux-iscsi.org>
Signed-off-by: James Bottomley <James.Bottomley@suse.de>
2010-12-18 03:11:26 +08:00
|
|
|
struct se_node_acl *nacl,
|
|
|
|
struct se_portal_group *tpg)
|
|
|
|
{
|
|
|
|
struct se_dev_entry *deve;
|
|
|
|
|
2015-03-23 11:42:19 +08:00
|
|
|
mutex_lock(&nacl->lun_entry_mutex);
|
|
|
|
hlist_for_each_entry_rcu(deve, &nacl->lun_entry_hlist, link) {
|
|
|
|
struct se_lun *lun = rcu_dereference_check(deve->se_lun,
|
|
|
|
lockdep_is_held(&nacl->lun_entry_mutex));
|
|
|
|
core_disable_device_list_for_node(lun, deve, nacl, tpg);
|
[SCSI] target: Add LIO target core v4.0.0-rc6
LIO target is a full featured in-kernel target framework with the
following feature set:
High-performance, non-blocking, multithreaded architecture with SIMD
support.
Advanced SCSI feature set:
* Persistent Reservations (PRs)
* Asymmetric Logical Unit Assignment (ALUA)
* Protocol and intra-nexus multiplexing, load-balancing and failover (MC/S)
* Full Error Recovery (ERL=0,1,2)
* Active/active task migration and session continuation (ERL=2)
* Thin LUN provisioning (UNMAP and WRITE_SAMExx)
Multiprotocol target plugins
Storage media independence:
* Virtualization of all storage media; transparent mapping of IO to LUNs
* No hard limits on number of LUNs per Target; maximum LUN size ~750 TB
* Backstores: SATA, SAS, SCSI, BluRay, DVD, FLASH, USB, ramdisk, etc.
Standards compliance:
* Full compliance with IETF (RFC 3720)
* Full implementation of SPC-4 PRs and ALUA
Significant code cleanups done by Christoph Hellwig.
[jejb: fix up for new block bdev exclusive interface. Minor fixes from
Randy Dunlap and Dan Carpenter.]
Signed-off-by: Nicholas A. Bellinger <nab@linux-iscsi.org>
Signed-off-by: James Bottomley <James.Bottomley@suse.de>
2010-12-18 03:11:26 +08:00
|
|
|
}
|
2015-03-23 11:42:19 +08:00
|
|
|
mutex_unlock(&nacl->lun_entry_mutex);
|
[SCSI] target: Add LIO target core v4.0.0-rc6
LIO target is a full featured in-kernel target framework with the
following feature set:
High-performance, non-blocking, multithreaded architecture with SIMD
support.
Advanced SCSI feature set:
* Persistent Reservations (PRs)
* Asymmetric Logical Unit Assignment (ALUA)
* Protocol and intra-nexus multiplexing, load-balancing and failover (MC/S)
* Full Error Recovery (ERL=0,1,2)
* Active/active task migration and session continuation (ERL=2)
* Thin LUN provisioning (UNMAP and WRITE_SAMExx)
Multiprotocol target plugins
Storage media independence:
* Virtualization of all storage media; transparent mapping of IO to LUNs
* No hard limits on number of LUNs per Target; maximum LUN size ~750 TB
* Backstores: SATA, SAS, SCSI, BluRay, DVD, FLASH, USB, ramdisk, etc.
Standards compliance:
* Full compliance with IETF (RFC 3720)
* Full implementation of SPC-4 PRs and ALUA
Significant code cleanups done by Christoph Hellwig.
[jejb: fix up for new block bdev exclusive interface. Minor fixes from
Randy Dunlap and Dan Carpenter.]
Signed-off-by: Nicholas A. Bellinger <nab@linux-iscsi.org>
Signed-off-by: James Bottomley <James.Bottomley@suse.de>
2010-12-18 03:11:26 +08:00
|
|
|
}
|
|
|
|
|
|
|
|
void core_update_device_list_access(
|
2015-06-10 14:41:22 +08:00
|
|
|
u64 mapped_lun,
|
2016-02-26 07:14:32 +08:00
|
|
|
bool lun_access_ro,
|
[SCSI] target: Add LIO target core v4.0.0-rc6
LIO target is a full featured in-kernel target framework with the
following feature set:
High-performance, non-blocking, multithreaded architecture with SIMD
support.
Advanced SCSI feature set:
* Persistent Reservations (PRs)
* Asymmetric Logical Unit Assignment (ALUA)
* Protocol and intra-nexus multiplexing, load-balancing and failover (MC/S)
* Full Error Recovery (ERL=0,1,2)
* Active/active task migration and session continuation (ERL=2)
* Thin LUN provisioning (UNMAP and WRITE_SAMExx)
Multiprotocol target plugins
Storage media independence:
* Virtualization of all storage media; transparent mapping of IO to LUNs
* No hard limits on number of LUNs per Target; maximum LUN size ~750 TB
* Backstores: SATA, SAS, SCSI, BluRay, DVD, FLASH, USB, ramdisk, etc.
Standards compliance:
* Full compliance with IETF (RFC 3720)
* Full implementation of SPC-4 PRs and ALUA
Significant code cleanups done by Christoph Hellwig.
[jejb: fix up for new block bdev exclusive interface. Minor fixes from
Randy Dunlap and Dan Carpenter.]
Signed-off-by: Nicholas A. Bellinger <nab@linux-iscsi.org>
Signed-off-by: James Bottomley <James.Bottomley@suse.de>
2010-12-18 03:11:26 +08:00
|
|
|
struct se_node_acl *nacl)
|
|
|
|
{
|
|
|
|
struct se_dev_entry *deve;
|
|
|
|
|
2015-03-23 11:42:19 +08:00
|
|
|
mutex_lock(&nacl->lun_entry_mutex);
|
|
|
|
deve = target_nacl_find_deve(nacl, mapped_lun);
|
2016-02-26 07:14:32 +08:00
|
|
|
if (deve)
|
|
|
|
deve->lun_access_ro = lun_access_ro;
|
2015-03-23 11:42:19 +08:00
|
|
|
mutex_unlock(&nacl->lun_entry_mutex);
|
[SCSI] target: Add LIO target core v4.0.0-rc6
LIO target is a full featured in-kernel target framework with the
following feature set:
High-performance, non-blocking, multithreaded architecture with SIMD
support.
Advanced SCSI feature set:
* Persistent Reservations (PRs)
* Asymmetric Logical Unit Assignment (ALUA)
* Protocol and intra-nexus multiplexing, load-balancing and failover (MC/S)
* Full Error Recovery (ERL=0,1,2)
* Active/active task migration and session continuation (ERL=2)
* Thin LUN provisioning (UNMAP and WRITE_SAMExx)
Multiprotocol target plugins
Storage media independence:
* Virtualization of all storage media; transparent mapping of IO to LUNs
* No hard limits on number of LUNs per Target; maximum LUN size ~750 TB
* Backstores: SATA, SAS, SCSI, BluRay, DVD, FLASH, USB, ramdisk, etc.
Standards compliance:
* Full compliance with IETF (RFC 3720)
* Full implementation of SPC-4 PRs and ALUA
Significant code cleanups done by Christoph Hellwig.
[jejb: fix up for new block bdev exclusive interface. Minor fixes from
Randy Dunlap and Dan Carpenter.]
Signed-off-by: Nicholas A. Bellinger <nab@linux-iscsi.org>
Signed-off-by: James Bottomley <James.Bottomley@suse.de>
2010-12-18 03:11:26 +08:00
|
|
|
}
|
|
|
|
|
2015-03-23 11:42:19 +08:00
|
|
|
/*
|
|
|
|
* Called with rcu_read_lock or nacl->device_list_lock held.
|
[SCSI] target: Add LIO target core v4.0.0-rc6
LIO target is a full featured in-kernel target framework with the
following feature set:
High-performance, non-blocking, multithreaded architecture with SIMD
support.
Advanced SCSI feature set:
* Persistent Reservations (PRs)
* Asymmetric Logical Unit Assignment (ALUA)
* Protocol and intra-nexus multiplexing, load-balancing and failover (MC/S)
* Full Error Recovery (ERL=0,1,2)
* Active/active task migration and session continuation (ERL=2)
* Thin LUN provisioning (UNMAP and WRITE_SAMExx)
Multiprotocol target plugins
Storage media independence:
* Virtualization of all storage media; transparent mapping of IO to LUNs
* No hard limits on number of LUNs per Target; maximum LUN size ~750 TB
* Backstores: SATA, SAS, SCSI, BluRay, DVD, FLASH, USB, ramdisk, etc.
Standards compliance:
* Full compliance with IETF (RFC 3720)
* Full implementation of SPC-4 PRs and ALUA
Significant code cleanups done by Christoph Hellwig.
[jejb: fix up for new block bdev exclusive interface. Minor fixes from
Randy Dunlap and Dan Carpenter.]
Signed-off-by: Nicholas A. Bellinger <nab@linux-iscsi.org>
Signed-off-by: James Bottomley <James.Bottomley@suse.de>
2010-12-18 03:11:26 +08:00
|
|
|
*/
|
2015-06-10 14:41:22 +08:00
|
|
|
struct se_dev_entry *target_nacl_find_deve(struct se_node_acl *nacl, u64 mapped_lun)
|
2015-03-23 11:42:19 +08:00
|
|
|
{
|
|
|
|
struct se_dev_entry *deve;
|
|
|
|
|
|
|
|
hlist_for_each_entry_rcu(deve, &nacl->lun_entry_hlist, link)
|
|
|
|
if (deve->mapped_lun == mapped_lun)
|
|
|
|
return deve;
|
|
|
|
|
|
|
|
return NULL;
|
|
|
|
}
|
|
|
|
EXPORT_SYMBOL(target_nacl_find_deve);
|
|
|
|
|
|
|
|
void target_pr_kref_release(struct kref *kref)
|
|
|
|
{
|
|
|
|
struct se_dev_entry *deve = container_of(kref, struct se_dev_entry,
|
|
|
|
pr_kref);
|
|
|
|
complete(&deve->pr_comp);
|
[SCSI] target: Add LIO target core v4.0.0-rc6
LIO target is a full featured in-kernel target framework with the
following feature set:
High-performance, non-blocking, multithreaded architecture with SIMD
support.
Advanced SCSI feature set:
* Persistent Reservations (PRs)
* Asymmetric Logical Unit Assignment (ALUA)
* Protocol and intra-nexus multiplexing, load-balancing and failover (MC/S)
* Full Error Recovery (ERL=0,1,2)
* Active/active task migration and session continuation (ERL=2)
* Thin LUN provisioning (UNMAP and WRITE_SAMExx)
Multiprotocol target plugins
Storage media independence:
* Virtualization of all storage media; transparent mapping of IO to LUNs
* No hard limits on number of LUNs per Target; maximum LUN size ~750 TB
* Backstores: SATA, SAS, SCSI, BluRay, DVD, FLASH, USB, ramdisk, etc.
Standards compliance:
* Full compliance with IETF (RFC 3720)
* Full implementation of SPC-4 PRs and ALUA
Significant code cleanups done by Christoph Hellwig.
[jejb: fix up for new block bdev exclusive interface. Minor fixes from
Randy Dunlap and Dan Carpenter.]
Signed-off-by: Nicholas A. Bellinger <nab@linux-iscsi.org>
Signed-off-by: James Bottomley <James.Bottomley@suse.de>
2010-12-18 03:11:26 +08:00
|
|
|
}
|
|
|
|
|
2015-06-11 16:01:29 +08:00
|
|
|
static void
|
|
|
|
target_luns_data_has_changed(struct se_node_acl *nacl, struct se_dev_entry *new,
|
|
|
|
bool skip_new)
|
|
|
|
{
|
|
|
|
struct se_dev_entry *tmp;
|
|
|
|
|
|
|
|
rcu_read_lock();
|
|
|
|
hlist_for_each_entry_rcu(tmp, &nacl->lun_entry_hlist, link) {
|
|
|
|
if (skip_new && tmp == new)
|
|
|
|
continue;
|
|
|
|
core_scsi3_ua_allocate(tmp, 0x3F,
|
|
|
|
ASCQ_3FH_REPORTED_LUNS_DATA_HAS_CHANGED);
|
|
|
|
}
|
|
|
|
rcu_read_unlock();
|
|
|
|
}
|
|
|
|
|
2012-07-13 08:34:58 +08:00
|
|
|
int core_enable_device_list_for_node(
|
[SCSI] target: Add LIO target core v4.0.0-rc6
LIO target is a full featured in-kernel target framework with the
following feature set:
High-performance, non-blocking, multithreaded architecture with SIMD
support.
Advanced SCSI feature set:
* Persistent Reservations (PRs)
* Asymmetric Logical Unit Assignment (ALUA)
* Protocol and intra-nexus multiplexing, load-balancing and failover (MC/S)
* Full Error Recovery (ERL=0,1,2)
* Active/active task migration and session continuation (ERL=2)
* Thin LUN provisioning (UNMAP and WRITE_SAMExx)
Multiprotocol target plugins
Storage media independence:
* Virtualization of all storage media; transparent mapping of IO to LUNs
* No hard limits on number of LUNs per Target; maximum LUN size ~750 TB
* Backstores: SATA, SAS, SCSI, BluRay, DVD, FLASH, USB, ramdisk, etc.
Standards compliance:
* Full compliance with IETF (RFC 3720)
* Full implementation of SPC-4 PRs and ALUA
Significant code cleanups done by Christoph Hellwig.
[jejb: fix up for new block bdev exclusive interface. Minor fixes from
Randy Dunlap and Dan Carpenter.]
Signed-off-by: Nicholas A. Bellinger <nab@linux-iscsi.org>
Signed-off-by: James Bottomley <James.Bottomley@suse.de>
2010-12-18 03:11:26 +08:00
|
|
|
struct se_lun *lun,
|
|
|
|
struct se_lun_acl *lun_acl,
|
2015-06-10 14:41:22 +08:00
|
|
|
u64 mapped_lun,
|
2016-02-26 07:14:32 +08:00
|
|
|
bool lun_access_ro,
|
[SCSI] target: Add LIO target core v4.0.0-rc6
LIO target is a full featured in-kernel target framework with the
following feature set:
High-performance, non-blocking, multithreaded architecture with SIMD
support.
Advanced SCSI feature set:
* Persistent Reservations (PRs)
* Asymmetric Logical Unit Assignment (ALUA)
* Protocol and intra-nexus multiplexing, load-balancing and failover (MC/S)
* Full Error Recovery (ERL=0,1,2)
* Active/active task migration and session continuation (ERL=2)
* Thin LUN provisioning (UNMAP and WRITE_SAMExx)
Multiprotocol target plugins
Storage media independence:
* Virtualization of all storage media; transparent mapping of IO to LUNs
* No hard limits on number of LUNs per Target; maximum LUN size ~750 TB
* Backstores: SATA, SAS, SCSI, BluRay, DVD, FLASH, USB, ramdisk, etc.
Standards compliance:
* Full compliance with IETF (RFC 3720)
* Full implementation of SPC-4 PRs and ALUA
Significant code cleanups done by Christoph Hellwig.
[jejb: fix up for new block bdev exclusive interface. Minor fixes from
Randy Dunlap and Dan Carpenter.]
Signed-off-by: Nicholas A. Bellinger <nab@linux-iscsi.org>
Signed-off-by: James Bottomley <James.Bottomley@suse.de>
2010-12-18 03:11:26 +08:00
|
|
|
struct se_node_acl *nacl,
|
2012-07-13 08:34:58 +08:00
|
|
|
struct se_portal_group *tpg)
|
[SCSI] target: Add LIO target core v4.0.0-rc6
LIO target is a full featured in-kernel target framework with the
following feature set:
High-performance, non-blocking, multithreaded architecture with SIMD
support.
Advanced SCSI feature set:
* Persistent Reservations (PRs)
* Asymmetric Logical Unit Assignment (ALUA)
* Protocol and intra-nexus multiplexing, load-balancing and failover (MC/S)
* Full Error Recovery (ERL=0,1,2)
* Active/active task migration and session continuation (ERL=2)
* Thin LUN provisioning (UNMAP and WRITE_SAMExx)
Multiprotocol target plugins
Storage media independence:
* Virtualization of all storage media; transparent mapping of IO to LUNs
* No hard limits on number of LUNs per Target; maximum LUN size ~750 TB
* Backstores: SATA, SAS, SCSI, BluRay, DVD, FLASH, USB, ramdisk, etc.
Standards compliance:
* Full compliance with IETF (RFC 3720)
* Full implementation of SPC-4 PRs and ALUA
Significant code cleanups done by Christoph Hellwig.
[jejb: fix up for new block bdev exclusive interface. Minor fixes from
Randy Dunlap and Dan Carpenter.]
Signed-off-by: Nicholas A. Bellinger <nab@linux-iscsi.org>
Signed-off-by: James Bottomley <James.Bottomley@suse.de>
2010-12-18 03:11:26 +08:00
|
|
|
{
|
2015-03-23 11:42:19 +08:00
|
|
|
struct se_dev_entry *orig, *new;
|
[SCSI] target: Add LIO target core v4.0.0-rc6
LIO target is a full featured in-kernel target framework with the
following feature set:
High-performance, non-blocking, multithreaded architecture with SIMD
support.
Advanced SCSI feature set:
* Persistent Reservations (PRs)
* Asymmetric Logical Unit Assignment (ALUA)
* Protocol and intra-nexus multiplexing, load-balancing and failover (MC/S)
* Full Error Recovery (ERL=0,1,2)
* Active/active task migration and session continuation (ERL=2)
* Thin LUN provisioning (UNMAP and WRITE_SAMExx)
Multiprotocol target plugins
Storage media independence:
* Virtualization of all storage media; transparent mapping of IO to LUNs
* No hard limits on number of LUNs per Target; maximum LUN size ~750 TB
* Backstores: SATA, SAS, SCSI, BluRay, DVD, FLASH, USB, ramdisk, etc.
Standards compliance:
* Full compliance with IETF (RFC 3720)
* Full implementation of SPC-4 PRs and ALUA
Significant code cleanups done by Christoph Hellwig.
[jejb: fix up for new block bdev exclusive interface. Minor fixes from
Randy Dunlap and Dan Carpenter.]
Signed-off-by: Nicholas A. Bellinger <nab@linux-iscsi.org>
Signed-off-by: James Bottomley <James.Bottomley@suse.de>
2010-12-18 03:11:26 +08:00
|
|
|
|
2015-03-23 11:42:19 +08:00
|
|
|
new = kzalloc(sizeof(*new), GFP_KERNEL);
|
|
|
|
if (!new) {
|
|
|
|
pr_err("Unable to allocate se_dev_entry memory\n");
|
|
|
|
return -ENOMEM;
|
|
|
|
}
|
2012-07-13 08:34:58 +08:00
|
|
|
|
2015-03-23 11:42:19 +08:00
|
|
|
spin_lock_init(&new->ua_lock);
|
|
|
|
INIT_LIST_HEAD(&new->ua_list);
|
2015-05-26 12:33:08 +08:00
|
|
|
INIT_LIST_HEAD(&new->lun_link);
|
2012-07-13 08:34:58 +08:00
|
|
|
|
2015-03-23 11:42:19 +08:00
|
|
|
new->mapped_lun = mapped_lun;
|
|
|
|
kref_init(&new->pr_kref);
|
|
|
|
init_completion(&new->pr_comp);
|
|
|
|
|
2016-02-26 07:14:32 +08:00
|
|
|
new->lun_access_ro = lun_access_ro;
|
2015-03-23 11:42:19 +08:00
|
|
|
new->creation_time = get_jiffies_64();
|
|
|
|
new->attach_count++;
|
|
|
|
|
|
|
|
mutex_lock(&nacl->lun_entry_mutex);
|
|
|
|
orig = target_nacl_find_deve(nacl, mapped_lun);
|
|
|
|
if (orig && orig->se_lun) {
|
|
|
|
struct se_lun *orig_lun = rcu_dereference_check(orig->se_lun,
|
|
|
|
lockdep_is_held(&nacl->lun_entry_mutex));
|
|
|
|
|
|
|
|
if (orig_lun != lun) {
|
|
|
|
pr_err("Existing orig->se_lun doesn't match new lun"
|
|
|
|
" for dynamic -> explicit NodeACL conversion:"
|
|
|
|
" %s\n", nacl->initiatorname);
|
|
|
|
mutex_unlock(&nacl->lun_entry_mutex);
|
|
|
|
kfree(new);
|
2012-07-13 08:34:58 +08:00
|
|
|
return -EINVAL;
|
[SCSI] target: Add LIO target core v4.0.0-rc6
LIO target is a full featured in-kernel target framework with the
following feature set:
High-performance, non-blocking, multithreaded architecture with SIMD
support.
Advanced SCSI feature set:
* Persistent Reservations (PRs)
* Asymmetric Logical Unit Assignment (ALUA)
* Protocol and intra-nexus multiplexing, load-balancing and failover (MC/S)
* Full Error Recovery (ERL=0,1,2)
* Active/active task migration and session continuation (ERL=2)
* Thin LUN provisioning (UNMAP and WRITE_SAMExx)
Multiprotocol target plugins
Storage media independence:
* Virtualization of all storage media; transparent mapping of IO to LUNs
* No hard limits on number of LUNs per Target; maximum LUN size ~750 TB
* Backstores: SATA, SAS, SCSI, BluRay, DVD, FLASH, USB, ramdisk, etc.
Standards compliance:
* Full compliance with IETF (RFC 3720)
* Full implementation of SPC-4 PRs and ALUA
Significant code cleanups done by Christoph Hellwig.
[jejb: fix up for new block bdev exclusive interface. Minor fixes from
Randy Dunlap and Dan Carpenter.]
Signed-off-by: Nicholas A. Bellinger <nab@linux-iscsi.org>
Signed-off-by: James Bottomley <James.Bottomley@suse.de>
2010-12-18 03:11:26 +08:00
|
|
|
}
|
2016-10-24 05:28:15 +08:00
|
|
|
if (orig->se_lun_acl != NULL) {
|
|
|
|
pr_warn_ratelimited("Detected existing explicit"
|
|
|
|
" se_lun_acl->se_lun_group reference for %s"
|
|
|
|
" mapped_lun: %llu, failing\n",
|
|
|
|
nacl->initiatorname, mapped_lun);
|
|
|
|
mutex_unlock(&nacl->lun_entry_mutex);
|
|
|
|
kfree(new);
|
|
|
|
return -EINVAL;
|
|
|
|
}
|
[SCSI] target: Add LIO target core v4.0.0-rc6
LIO target is a full featured in-kernel target framework with the
following feature set:
High-performance, non-blocking, multithreaded architecture with SIMD
support.
Advanced SCSI feature set:
* Persistent Reservations (PRs)
* Asymmetric Logical Unit Assignment (ALUA)
* Protocol and intra-nexus multiplexing, load-balancing and failover (MC/S)
* Full Error Recovery (ERL=0,1,2)
* Active/active task migration and session continuation (ERL=2)
* Thin LUN provisioning (UNMAP and WRITE_SAMExx)
Multiprotocol target plugins
Storage media independence:
* Virtualization of all storage media; transparent mapping of IO to LUNs
* No hard limits on number of LUNs per Target; maximum LUN size ~750 TB
* Backstores: SATA, SAS, SCSI, BluRay, DVD, FLASH, USB, ramdisk, etc.
Standards compliance:
* Full compliance with IETF (RFC 3720)
* Full implementation of SPC-4 PRs and ALUA
Significant code cleanups done by Christoph Hellwig.
[jejb: fix up for new block bdev exclusive interface. Minor fixes from
Randy Dunlap and Dan Carpenter.]
Signed-off-by: Nicholas A. Bellinger <nab@linux-iscsi.org>
Signed-off-by: James Bottomley <James.Bottomley@suse.de>
2010-12-18 03:11:26 +08:00
|
|
|
|
2015-03-23 11:42:19 +08:00
|
|
|
rcu_assign_pointer(new->se_lun, lun);
|
|
|
|
rcu_assign_pointer(new->se_lun_acl, lun_acl);
|
|
|
|
hlist_del_rcu(&orig->link);
|
|
|
|
hlist_add_head_rcu(&new->link, &nacl->lun_entry_hlist);
|
|
|
|
mutex_unlock(&nacl->lun_entry_mutex);
|
[SCSI] target: Add LIO target core v4.0.0-rc6
LIO target is a full featured in-kernel target framework with the
following feature set:
High-performance, non-blocking, multithreaded architecture with SIMD
support.
Advanced SCSI feature set:
* Persistent Reservations (PRs)
* Asymmetric Logical Unit Assignment (ALUA)
* Protocol and intra-nexus multiplexing, load-balancing and failover (MC/S)
* Full Error Recovery (ERL=0,1,2)
* Active/active task migration and session continuation (ERL=2)
* Thin LUN provisioning (UNMAP and WRITE_SAMExx)
Multiprotocol target plugins
Storage media independence:
* Virtualization of all storage media; transparent mapping of IO to LUNs
* No hard limits on number of LUNs per Target; maximum LUN size ~750 TB
* Backstores: SATA, SAS, SCSI, BluRay, DVD, FLASH, USB, ramdisk, etc.
Standards compliance:
* Full compliance with IETF (RFC 3720)
* Full implementation of SPC-4 PRs and ALUA
Significant code cleanups done by Christoph Hellwig.
[jejb: fix up for new block bdev exclusive interface. Minor fixes from
Randy Dunlap and Dan Carpenter.]
Signed-off-by: Nicholas A. Bellinger <nab@linux-iscsi.org>
Signed-off-by: James Bottomley <James.Bottomley@suse.de>
2010-12-18 03:11:26 +08:00
|
|
|
|
2015-06-23 14:44:05 +08:00
|
|
|
spin_lock(&lun->lun_deve_lock);
|
2015-05-26 12:33:08 +08:00
|
|
|
list_del(&orig->lun_link);
|
|
|
|
list_add_tail(&new->lun_link, &lun->lun_deve_list);
|
2015-06-23 14:44:05 +08:00
|
|
|
spin_unlock(&lun->lun_deve_lock);
|
[SCSI] target: Add LIO target core v4.0.0-rc6
LIO target is a full featured in-kernel target framework with the
following feature set:
High-performance, non-blocking, multithreaded architecture with SIMD
support.
Advanced SCSI feature set:
* Persistent Reservations (PRs)
* Asymmetric Logical Unit Assignment (ALUA)
* Protocol and intra-nexus multiplexing, load-balancing and failover (MC/S)
* Full Error Recovery (ERL=0,1,2)
* Active/active task migration and session continuation (ERL=2)
* Thin LUN provisioning (UNMAP and WRITE_SAMExx)
Multiprotocol target plugins
Storage media independence:
* Virtualization of all storage media; transparent mapping of IO to LUNs
* No hard limits on number of LUNs per Target; maximum LUN size ~750 TB
* Backstores: SATA, SAS, SCSI, BluRay, DVD, FLASH, USB, ramdisk, etc.
Standards compliance:
* Full compliance with IETF (RFC 3720)
* Full implementation of SPC-4 PRs and ALUA
Significant code cleanups done by Christoph Hellwig.
[jejb: fix up for new block bdev exclusive interface. Minor fixes from
Randy Dunlap and Dan Carpenter.]
Signed-off-by: Nicholas A. Bellinger <nab@linux-iscsi.org>
Signed-off-by: James Bottomley <James.Bottomley@suse.de>
2010-12-18 03:11:26 +08:00
|
|
|
|
2015-03-23 11:42:19 +08:00
|
|
|
kref_put(&orig->pr_kref, target_pr_kref_release);
|
|
|
|
wait_for_completion(&orig->pr_comp);
|
[SCSI] target: Add LIO target core v4.0.0-rc6
LIO target is a full featured in-kernel target framework with the
following feature set:
High-performance, non-blocking, multithreaded architecture with SIMD
support.
Advanced SCSI feature set:
* Persistent Reservations (PRs)
* Asymmetric Logical Unit Assignment (ALUA)
* Protocol and intra-nexus multiplexing, load-balancing and failover (MC/S)
* Full Error Recovery (ERL=0,1,2)
* Active/active task migration and session continuation (ERL=2)
* Thin LUN provisioning (UNMAP and WRITE_SAMExx)
Multiprotocol target plugins
Storage media independence:
* Virtualization of all storage media; transparent mapping of IO to LUNs
* No hard limits on number of LUNs per Target; maximum LUN size ~750 TB
* Backstores: SATA, SAS, SCSI, BluRay, DVD, FLASH, USB, ramdisk, etc.
Standards compliance:
* Full compliance with IETF (RFC 3720)
* Full implementation of SPC-4 PRs and ALUA
Significant code cleanups done by Christoph Hellwig.
[jejb: fix up for new block bdev exclusive interface. Minor fixes from
Randy Dunlap and Dan Carpenter.]
Signed-off-by: Nicholas A. Bellinger <nab@linux-iscsi.org>
Signed-off-by: James Bottomley <James.Bottomley@suse.de>
2010-12-18 03:11:26 +08:00
|
|
|
|
2015-06-11 16:01:29 +08:00
|
|
|
target_luns_data_has_changed(nacl, new, true);
|
2015-03-23 11:42:19 +08:00
|
|
|
kfree_rcu(orig, rcu_head);
|
|
|
|
return 0;
|
[SCSI] target: Add LIO target core v4.0.0-rc6
LIO target is a full featured in-kernel target framework with the
following feature set:
High-performance, non-blocking, multithreaded architecture with SIMD
support.
Advanced SCSI feature set:
* Persistent Reservations (PRs)
* Asymmetric Logical Unit Assignment (ALUA)
* Protocol and intra-nexus multiplexing, load-balancing and failover (MC/S)
* Full Error Recovery (ERL=0,1,2)
* Active/active task migration and session continuation (ERL=2)
* Thin LUN provisioning (UNMAP and WRITE_SAMExx)
Multiprotocol target plugins
Storage media independence:
* Virtualization of all storage media; transparent mapping of IO to LUNs
* No hard limits on number of LUNs per Target; maximum LUN size ~750 TB
* Backstores: SATA, SAS, SCSI, BluRay, DVD, FLASH, USB, ramdisk, etc.
Standards compliance:
* Full compliance with IETF (RFC 3720)
* Full implementation of SPC-4 PRs and ALUA
Significant code cleanups done by Christoph Hellwig.
[jejb: fix up for new block bdev exclusive interface. Minor fixes from
Randy Dunlap and Dan Carpenter.]
Signed-off-by: Nicholas A. Bellinger <nab@linux-iscsi.org>
Signed-off-by: James Bottomley <James.Bottomley@suse.de>
2010-12-18 03:11:26 +08:00
|
|
|
}
|
2012-07-13 08:34:58 +08:00
|
|
|
|
2015-03-23 11:42:19 +08:00
|
|
|
rcu_assign_pointer(new->se_lun, lun);
|
|
|
|
rcu_assign_pointer(new->se_lun_acl, lun_acl);
|
|
|
|
hlist_add_head_rcu(&new->link, &nacl->lun_entry_hlist);
|
|
|
|
mutex_unlock(&nacl->lun_entry_mutex);
|
2012-07-13 08:34:58 +08:00
|
|
|
|
2015-06-23 14:44:05 +08:00
|
|
|
spin_lock(&lun->lun_deve_lock);
|
2015-05-26 12:33:08 +08:00
|
|
|
list_add_tail(&new->lun_link, &lun->lun_deve_list);
|
2015-06-23 14:44:05 +08:00
|
|
|
spin_unlock(&lun->lun_deve_lock);
|
2012-07-13 08:34:58 +08:00
|
|
|
|
2015-06-11 16:01:29 +08:00
|
|
|
target_luns_data_has_changed(nacl, new, true);
|
2012-07-13 08:34:58 +08:00
|
|
|
return 0;
|
|
|
|
}
|
|
|
|
|
2015-03-23 11:42:19 +08:00
|
|
|
/*
|
|
|
|
* Called with se_node_acl->lun_entry_mutex held.
|
2012-07-13 08:34:58 +08:00
|
|
|
*/
|
2015-03-23 11:42:19 +08:00
|
|
|
void core_disable_device_list_for_node(
|
2012-07-13 08:34:58 +08:00
|
|
|
struct se_lun *lun,
|
2015-03-23 11:42:19 +08:00
|
|
|
struct se_dev_entry *orig,
|
2012-07-13 08:34:58 +08:00
|
|
|
struct se_node_acl *nacl,
|
|
|
|
struct se_portal_group *tpg)
|
|
|
|
{
|
2015-05-19 15:03:07 +08:00
|
|
|
/*
|
|
|
|
* rcu_dereference_raw protected by se_lun->lun_group symlink
|
|
|
|
* reference to se_device->dev_group.
|
|
|
|
*/
|
|
|
|
struct se_device *dev = rcu_dereference_raw(lun->lun_se_dev);
|
2012-07-13 08:34:58 +08:00
|
|
|
/*
|
|
|
|
* If the MappedLUN entry is being disabled, the entry in
|
2015-05-26 12:33:08 +08:00
|
|
|
* lun->lun_deve_list must be removed now before clearing the
|
2012-07-13 08:34:58 +08:00
|
|
|
* struct se_dev_entry pointers below as logic in
|
|
|
|
* core_alua_do_transition_tg_pt() depends on these being present.
|
|
|
|
*
|
|
|
|
* deve->se_lun_acl will be NULL for demo-mode created LUNs
|
|
|
|
* that have not been explicitly converted to MappedLUNs ->
|
2015-05-26 12:33:08 +08:00
|
|
|
* struct se_lun_acl, but we remove deve->lun_link from
|
|
|
|
* lun->lun_deve_list. This also means that active UAs and
|
2012-07-13 08:34:58 +08:00
|
|
|
* NodeACL context specific PR metadata for demo-mode
|
|
|
|
* MappedLUN *deve will be released below..
|
|
|
|
*/
|
2015-06-23 14:44:05 +08:00
|
|
|
spin_lock(&lun->lun_deve_lock);
|
2015-05-26 12:33:08 +08:00
|
|
|
list_del(&orig->lun_link);
|
2015-06-23 14:44:05 +08:00
|
|
|
spin_unlock(&lun->lun_deve_lock);
|
[SCSI] target: Add LIO target core v4.0.0-rc6
LIO target is a full featured in-kernel target framework with the
following feature set:
High-performance, non-blocking, multithreaded architecture with SIMD
support.
Advanced SCSI feature set:
* Persistent Reservations (PRs)
* Asymmetric Logical Unit Assignment (ALUA)
* Protocol and intra-nexus multiplexing, load-balancing and failover (MC/S)
* Full Error Recovery (ERL=0,1,2)
* Active/active task migration and session continuation (ERL=2)
* Thin LUN provisioning (UNMAP and WRITE_SAMExx)
Multiprotocol target plugins
Storage media independence:
* Virtualization of all storage media; transparent mapping of IO to LUNs
* No hard limits on number of LUNs per Target; maximum LUN size ~750 TB
* Backstores: SATA, SAS, SCSI, BluRay, DVD, FLASH, USB, ramdisk, etc.
Standards compliance:
* Full compliance with IETF (RFC 3720)
* Full implementation of SPC-4 PRs and ALUA
Significant code cleanups done by Christoph Hellwig.
[jejb: fix up for new block bdev exclusive interface. Minor fixes from
Randy Dunlap and Dan Carpenter.]
Signed-off-by: Nicholas A. Bellinger <nab@linux-iscsi.org>
Signed-off-by: James Bottomley <James.Bottomley@suse.de>
2010-12-18 03:11:26 +08:00
|
|
|
/*
|
2015-03-23 11:42:19 +08:00
|
|
|
* Disable struct se_dev_entry LUN ACL mapping
|
[SCSI] target: Add LIO target core v4.0.0-rc6
LIO target is a full featured in-kernel target framework with the
following feature set:
High-performance, non-blocking, multithreaded architecture with SIMD
support.
Advanced SCSI feature set:
* Persistent Reservations (PRs)
* Asymmetric Logical Unit Assignment (ALUA)
* Protocol and intra-nexus multiplexing, load-balancing and failover (MC/S)
* Full Error Recovery (ERL=0,1,2)
* Active/active task migration and session continuation (ERL=2)
* Thin LUN provisioning (UNMAP and WRITE_SAMExx)
Multiprotocol target plugins
Storage media independence:
* Virtualization of all storage media; transparent mapping of IO to LUNs
* No hard limits on number of LUNs per Target; maximum LUN size ~750 TB
* Backstores: SATA, SAS, SCSI, BluRay, DVD, FLASH, USB, ramdisk, etc.
Standards compliance:
* Full compliance with IETF (RFC 3720)
* Full implementation of SPC-4 PRs and ALUA
Significant code cleanups done by Christoph Hellwig.
[jejb: fix up for new block bdev exclusive interface. Minor fixes from
Randy Dunlap and Dan Carpenter.]
Signed-off-by: Nicholas A. Bellinger <nab@linux-iscsi.org>
Signed-off-by: James Bottomley <James.Bottomley@suse.de>
2010-12-18 03:11:26 +08:00
|
|
|
*/
|
2015-03-23 11:42:19 +08:00
|
|
|
core_scsi3_ua_release_all(orig);
|
|
|
|
|
|
|
|
hlist_del_rcu(&orig->link);
|
2015-03-25 16:02:57 +08:00
|
|
|
clear_bit(DEF_PR_REG_ACTIVE, &orig->deve_flags);
|
2016-02-26 07:14:32 +08:00
|
|
|
orig->lun_access_ro = false;
|
2015-03-23 11:42:19 +08:00
|
|
|
orig->creation_time = 0;
|
|
|
|
orig->attach_count--;
|
[SCSI] target: Add LIO target core v4.0.0-rc6
LIO target is a full featured in-kernel target framework with the
following feature set:
High-performance, non-blocking, multithreaded architecture with SIMD
support.
Advanced SCSI feature set:
* Persistent Reservations (PRs)
* Asymmetric Logical Unit Assignment (ALUA)
* Protocol and intra-nexus multiplexing, load-balancing and failover (MC/S)
* Full Error Recovery (ERL=0,1,2)
* Active/active task migration and session continuation (ERL=2)
* Thin LUN provisioning (UNMAP and WRITE_SAMExx)
Multiprotocol target plugins
Storage media independence:
* Virtualization of all storage media; transparent mapping of IO to LUNs
* No hard limits on number of LUNs per Target; maximum LUN size ~750 TB
* Backstores: SATA, SAS, SCSI, BluRay, DVD, FLASH, USB, ramdisk, etc.
Standards compliance:
* Full compliance with IETF (RFC 3720)
* Full implementation of SPC-4 PRs and ALUA
Significant code cleanups done by Christoph Hellwig.
[jejb: fix up for new block bdev exclusive interface. Minor fixes from
Randy Dunlap and Dan Carpenter.]
Signed-off-by: Nicholas A. Bellinger <nab@linux-iscsi.org>
Signed-off-by: James Bottomley <James.Bottomley@suse.de>
2010-12-18 03:11:26 +08:00
|
|
|
/*
|
2015-03-23 11:42:19 +08:00
|
|
|
* Before firing off RCU callback, wait for any in process SPEC_I_PT=1
|
|
|
|
* or REGISTER_AND_MOVE PR operation to complete.
|
[SCSI] target: Add LIO target core v4.0.0-rc6
LIO target is a full featured in-kernel target framework with the
following feature set:
High-performance, non-blocking, multithreaded architecture with SIMD
support.
Advanced SCSI feature set:
* Persistent Reservations (PRs)
* Asymmetric Logical Unit Assignment (ALUA)
* Protocol and intra-nexus multiplexing, load-balancing and failover (MC/S)
* Full Error Recovery (ERL=0,1,2)
* Active/active task migration and session continuation (ERL=2)
* Thin LUN provisioning (UNMAP and WRITE_SAMExx)
Multiprotocol target plugins
Storage media independence:
* Virtualization of all storage media; transparent mapping of IO to LUNs
* No hard limits on number of LUNs per Target; maximum LUN size ~750 TB
* Backstores: SATA, SAS, SCSI, BluRay, DVD, FLASH, USB, ramdisk, etc.
Standards compliance:
* Full compliance with IETF (RFC 3720)
* Full implementation of SPC-4 PRs and ALUA
Significant code cleanups done by Christoph Hellwig.
[jejb: fix up for new block bdev exclusive interface. Minor fixes from
Randy Dunlap and Dan Carpenter.]
Signed-off-by: Nicholas A. Bellinger <nab@linux-iscsi.org>
Signed-off-by: James Bottomley <James.Bottomley@suse.de>
2010-12-18 03:11:26 +08:00
|
|
|
*/
|
2015-03-23 11:42:19 +08:00
|
|
|
kref_put(&orig->pr_kref, target_pr_kref_release);
|
|
|
|
wait_for_completion(&orig->pr_comp);
|
|
|
|
|
2015-09-13 17:30:46 +08:00
|
|
|
rcu_assign_pointer(orig->se_lun, NULL);
|
|
|
|
rcu_assign_pointer(orig->se_lun_acl, NULL);
|
|
|
|
|
2015-03-23 11:42:19 +08:00
|
|
|
kfree_rcu(orig, rcu_head);
|
[SCSI] target: Add LIO target core v4.0.0-rc6
LIO target is a full featured in-kernel target framework with the
following feature set:
High-performance, non-blocking, multithreaded architecture with SIMD
support.
Advanced SCSI feature set:
* Persistent Reservations (PRs)
* Asymmetric Logical Unit Assignment (ALUA)
* Protocol and intra-nexus multiplexing, load-balancing and failover (MC/S)
* Full Error Recovery (ERL=0,1,2)
* Active/active task migration and session continuation (ERL=2)
* Thin LUN provisioning (UNMAP and WRITE_SAMExx)
Multiprotocol target plugins
Storage media independence:
* Virtualization of all storage media; transparent mapping of IO to LUNs
* No hard limits on number of LUNs per Target; maximum LUN size ~750 TB
* Backstores: SATA, SAS, SCSI, BluRay, DVD, FLASH, USB, ramdisk, etc.
Standards compliance:
* Full compliance with IETF (RFC 3720)
* Full implementation of SPC-4 PRs and ALUA
Significant code cleanups done by Christoph Hellwig.
[jejb: fix up for new block bdev exclusive interface. Minor fixes from
Randy Dunlap and Dan Carpenter.]
Signed-off-by: Nicholas A. Bellinger <nab@linux-iscsi.org>
Signed-off-by: James Bottomley <James.Bottomley@suse.de>
2010-12-18 03:11:26 +08:00
|
|
|
|
2015-05-19 15:03:07 +08:00
|
|
|
core_scsi3_free_pr_reg_from_nacl(dev, nacl);
|
2015-06-11 16:01:29 +08:00
|
|
|
target_luns_data_has_changed(nacl, NULL, false);
|
[SCSI] target: Add LIO target core v4.0.0-rc6
LIO target is a full featured in-kernel target framework with the
following feature set:
High-performance, non-blocking, multithreaded architecture with SIMD
support.
Advanced SCSI feature set:
* Persistent Reservations (PRs)
* Asymmetric Logical Unit Assignment (ALUA)
* Protocol and intra-nexus multiplexing, load-balancing and failover (MC/S)
* Full Error Recovery (ERL=0,1,2)
* Active/active task migration and session continuation (ERL=2)
* Thin LUN provisioning (UNMAP and WRITE_SAMExx)
Multiprotocol target plugins
Storage media independence:
* Virtualization of all storage media; transparent mapping of IO to LUNs
* No hard limits on number of LUNs per Target; maximum LUN size ~750 TB
* Backstores: SATA, SAS, SCSI, BluRay, DVD, FLASH, USB, ramdisk, etc.
Standards compliance:
* Full compliance with IETF (RFC 3720)
* Full implementation of SPC-4 PRs and ALUA
Significant code cleanups done by Christoph Hellwig.
[jejb: fix up for new block bdev exclusive interface. Minor fixes from
Randy Dunlap and Dan Carpenter.]
Signed-off-by: Nicholas A. Bellinger <nab@linux-iscsi.org>
Signed-off-by: James Bottomley <James.Bottomley@suse.de>
2010-12-18 03:11:26 +08:00
|
|
|
}
|
|
|
|
|
|
|
|
/* core_clear_lun_from_tpg():
|
|
|
|
*
|
|
|
|
*
|
|
|
|
*/
|
|
|
|
void core_clear_lun_from_tpg(struct se_lun *lun, struct se_portal_group *tpg)
|
|
|
|
{
|
|
|
|
struct se_node_acl *nacl;
|
|
|
|
struct se_dev_entry *deve;
|
|
|
|
|
2015-03-09 06:33:47 +08:00
|
|
|
mutex_lock(&tpg->acl_node_mutex);
|
[SCSI] target: Add LIO target core v4.0.0-rc6
LIO target is a full featured in-kernel target framework with the
following feature set:
High-performance, non-blocking, multithreaded architecture with SIMD
support.
Advanced SCSI feature set:
* Persistent Reservations (PRs)
* Asymmetric Logical Unit Assignment (ALUA)
* Protocol and intra-nexus multiplexing, load-balancing and failover (MC/S)
* Full Error Recovery (ERL=0,1,2)
* Active/active task migration and session continuation (ERL=2)
* Thin LUN provisioning (UNMAP and WRITE_SAMExx)
Multiprotocol target plugins
Storage media independence:
* Virtualization of all storage media; transparent mapping of IO to LUNs
* No hard limits on number of LUNs per Target; maximum LUN size ~750 TB
* Backstores: SATA, SAS, SCSI, BluRay, DVD, FLASH, USB, ramdisk, etc.
Standards compliance:
* Full compliance with IETF (RFC 3720)
* Full implementation of SPC-4 PRs and ALUA
Significant code cleanups done by Christoph Hellwig.
[jejb: fix up for new block bdev exclusive interface. Minor fixes from
Randy Dunlap and Dan Carpenter.]
Signed-off-by: Nicholas A. Bellinger <nab@linux-iscsi.org>
Signed-off-by: James Bottomley <James.Bottomley@suse.de>
2010-12-18 03:11:26 +08:00
|
|
|
list_for_each_entry(nacl, &tpg->acl_node_list, acl_list) {
|
|
|
|
|
2015-03-23 11:42:19 +08:00
|
|
|
mutex_lock(&nacl->lun_entry_mutex);
|
|
|
|
hlist_for_each_entry_rcu(deve, &nacl->lun_entry_hlist, link) {
|
|
|
|
struct se_lun *tmp_lun = rcu_dereference_check(deve->se_lun,
|
|
|
|
lockdep_is_held(&nacl->lun_entry_mutex));
|
[SCSI] target: Add LIO target core v4.0.0-rc6
LIO target is a full featured in-kernel target framework with the
following feature set:
High-performance, non-blocking, multithreaded architecture with SIMD
support.
Advanced SCSI feature set:
* Persistent Reservations (PRs)
* Asymmetric Logical Unit Assignment (ALUA)
* Protocol and intra-nexus multiplexing, load-balancing and failover (MC/S)
* Full Error Recovery (ERL=0,1,2)
* Active/active task migration and session continuation (ERL=2)
* Thin LUN provisioning (UNMAP and WRITE_SAMExx)
Multiprotocol target plugins
Storage media independence:
* Virtualization of all storage media; transparent mapping of IO to LUNs
* No hard limits on number of LUNs per Target; maximum LUN size ~750 TB
* Backstores: SATA, SAS, SCSI, BluRay, DVD, FLASH, USB, ramdisk, etc.
Standards compliance:
* Full compliance with IETF (RFC 3720)
* Full implementation of SPC-4 PRs and ALUA
Significant code cleanups done by Christoph Hellwig.
[jejb: fix up for new block bdev exclusive interface. Minor fixes from
Randy Dunlap and Dan Carpenter.]
Signed-off-by: Nicholas A. Bellinger <nab@linux-iscsi.org>
Signed-off-by: James Bottomley <James.Bottomley@suse.de>
2010-12-18 03:11:26 +08:00
|
|
|
|
2015-03-23 11:42:19 +08:00
|
|
|
if (lun != tmp_lun)
|
|
|
|
continue;
|
[SCSI] target: Add LIO target core v4.0.0-rc6
LIO target is a full featured in-kernel target framework with the
following feature set:
High-performance, non-blocking, multithreaded architecture with SIMD
support.
Advanced SCSI feature set:
* Persistent Reservations (PRs)
* Asymmetric Logical Unit Assignment (ALUA)
* Protocol and intra-nexus multiplexing, load-balancing and failover (MC/S)
* Full Error Recovery (ERL=0,1,2)
* Active/active task migration and session continuation (ERL=2)
* Thin LUN provisioning (UNMAP and WRITE_SAMExx)
Multiprotocol target plugins
Storage media independence:
* Virtualization of all storage media; transparent mapping of IO to LUNs
* No hard limits on number of LUNs per Target; maximum LUN size ~750 TB
* Backstores: SATA, SAS, SCSI, BluRay, DVD, FLASH, USB, ramdisk, etc.
Standards compliance:
* Full compliance with IETF (RFC 3720)
* Full implementation of SPC-4 PRs and ALUA
Significant code cleanups done by Christoph Hellwig.
[jejb: fix up for new block bdev exclusive interface. Minor fixes from
Randy Dunlap and Dan Carpenter.]
Signed-off-by: Nicholas A. Bellinger <nab@linux-iscsi.org>
Signed-off-by: James Bottomley <James.Bottomley@suse.de>
2010-12-18 03:11:26 +08:00
|
|
|
|
2015-03-23 11:42:19 +08:00
|
|
|
core_disable_device_list_for_node(lun, deve, nacl, tpg);
|
[SCSI] target: Add LIO target core v4.0.0-rc6
LIO target is a full featured in-kernel target framework with the
following feature set:
High-performance, non-blocking, multithreaded architecture with SIMD
support.
Advanced SCSI feature set:
* Persistent Reservations (PRs)
* Asymmetric Logical Unit Assignment (ALUA)
* Protocol and intra-nexus multiplexing, load-balancing and failover (MC/S)
* Full Error Recovery (ERL=0,1,2)
* Active/active task migration and session continuation (ERL=2)
* Thin LUN provisioning (UNMAP and WRITE_SAMExx)
Multiprotocol target plugins
Storage media independence:
* Virtualization of all storage media; transparent mapping of IO to LUNs
* No hard limits on number of LUNs per Target; maximum LUN size ~750 TB
* Backstores: SATA, SAS, SCSI, BluRay, DVD, FLASH, USB, ramdisk, etc.
Standards compliance:
* Full compliance with IETF (RFC 3720)
* Full implementation of SPC-4 PRs and ALUA
Significant code cleanups done by Christoph Hellwig.
[jejb: fix up for new block bdev exclusive interface. Minor fixes from
Randy Dunlap and Dan Carpenter.]
Signed-off-by: Nicholas A. Bellinger <nab@linux-iscsi.org>
Signed-off-by: James Bottomley <James.Bottomley@suse.de>
2010-12-18 03:11:26 +08:00
|
|
|
}
|
2015-03-23 11:42:19 +08:00
|
|
|
mutex_unlock(&nacl->lun_entry_mutex);
|
[SCSI] target: Add LIO target core v4.0.0-rc6
LIO target is a full featured in-kernel target framework with the
following feature set:
High-performance, non-blocking, multithreaded architecture with SIMD
support.
Advanced SCSI feature set:
* Persistent Reservations (PRs)
* Asymmetric Logical Unit Assignment (ALUA)
* Protocol and intra-nexus multiplexing, load-balancing and failover (MC/S)
* Full Error Recovery (ERL=0,1,2)
* Active/active task migration and session continuation (ERL=2)
* Thin LUN provisioning (UNMAP and WRITE_SAMExx)
Multiprotocol target plugins
Storage media independence:
* Virtualization of all storage media; transparent mapping of IO to LUNs
* No hard limits on number of LUNs per Target; maximum LUN size ~750 TB
* Backstores: SATA, SAS, SCSI, BluRay, DVD, FLASH, USB, ramdisk, etc.
Standards compliance:
* Full compliance with IETF (RFC 3720)
* Full implementation of SPC-4 PRs and ALUA
Significant code cleanups done by Christoph Hellwig.
[jejb: fix up for new block bdev exclusive interface. Minor fixes from
Randy Dunlap and Dan Carpenter.]
Signed-off-by: Nicholas A. Bellinger <nab@linux-iscsi.org>
Signed-off-by: James Bottomley <James.Bottomley@suse.de>
2010-12-18 03:11:26 +08:00
|
|
|
}
|
2015-03-09 06:33:47 +08:00
|
|
|
mutex_unlock(&tpg->acl_node_mutex);
|
[SCSI] target: Add LIO target core v4.0.0-rc6
LIO target is a full featured in-kernel target framework with the
following feature set:
High-performance, non-blocking, multithreaded architecture with SIMD
support.
Advanced SCSI feature set:
* Persistent Reservations (PRs)
* Asymmetric Logical Unit Assignment (ALUA)
* Protocol and intra-nexus multiplexing, load-balancing and failover (MC/S)
* Full Error Recovery (ERL=0,1,2)
* Active/active task migration and session continuation (ERL=2)
* Thin LUN provisioning (UNMAP and WRITE_SAMExx)
Multiprotocol target plugins
Storage media independence:
* Virtualization of all storage media; transparent mapping of IO to LUNs
* No hard limits on number of LUNs per Target; maximum LUN size ~750 TB
* Backstores: SATA, SAS, SCSI, BluRay, DVD, FLASH, USB, ramdisk, etc.
Standards compliance:
* Full compliance with IETF (RFC 3720)
* Full implementation of SPC-4 PRs and ALUA
Significant code cleanups done by Christoph Hellwig.
[jejb: fix up for new block bdev exclusive interface. Minor fixes from
Randy Dunlap and Dan Carpenter.]
Signed-off-by: Nicholas A. Bellinger <nab@linux-iscsi.org>
Signed-off-by: James Bottomley <James.Bottomley@suse.de>
2010-12-18 03:11:26 +08:00
|
|
|
}
|
|
|
|
|
2015-05-26 12:33:08 +08:00
|
|
|
int core_alloc_rtpi(struct se_lun *lun, struct se_device *dev)
|
[SCSI] target: Add LIO target core v4.0.0-rc6
LIO target is a full featured in-kernel target framework with the
following feature set:
High-performance, non-blocking, multithreaded architecture with SIMD
support.
Advanced SCSI feature set:
* Persistent Reservations (PRs)
* Asymmetric Logical Unit Assignment (ALUA)
* Protocol and intra-nexus multiplexing, load-balancing and failover (MC/S)
* Full Error Recovery (ERL=0,1,2)
* Active/active task migration and session continuation (ERL=2)
* Thin LUN provisioning (UNMAP and WRITE_SAMExx)
Multiprotocol target plugins
Storage media independence:
* Virtualization of all storage media; transparent mapping of IO to LUNs
* No hard limits on number of LUNs per Target; maximum LUN size ~750 TB
* Backstores: SATA, SAS, SCSI, BluRay, DVD, FLASH, USB, ramdisk, etc.
Standards compliance:
* Full compliance with IETF (RFC 3720)
* Full implementation of SPC-4 PRs and ALUA
Significant code cleanups done by Christoph Hellwig.
[jejb: fix up for new block bdev exclusive interface. Minor fixes from
Randy Dunlap and Dan Carpenter.]
Signed-off-by: Nicholas A. Bellinger <nab@linux-iscsi.org>
Signed-off-by: James Bottomley <James.Bottomley@suse.de>
2010-12-18 03:11:26 +08:00
|
|
|
{
|
2015-05-26 12:33:08 +08:00
|
|
|
struct se_lun *tmp;
|
[SCSI] target: Add LIO target core v4.0.0-rc6
LIO target is a full featured in-kernel target framework with the
following feature set:
High-performance, non-blocking, multithreaded architecture with SIMD
support.
Advanced SCSI feature set:
* Persistent Reservations (PRs)
* Asymmetric Logical Unit Assignment (ALUA)
* Protocol and intra-nexus multiplexing, load-balancing and failover (MC/S)
* Full Error Recovery (ERL=0,1,2)
* Active/active task migration and session continuation (ERL=2)
* Thin LUN provisioning (UNMAP and WRITE_SAMExx)
Multiprotocol target plugins
Storage media independence:
* Virtualization of all storage media; transparent mapping of IO to LUNs
* No hard limits on number of LUNs per Target; maximum LUN size ~750 TB
* Backstores: SATA, SAS, SCSI, BluRay, DVD, FLASH, USB, ramdisk, etc.
Standards compliance:
* Full compliance with IETF (RFC 3720)
* Full implementation of SPC-4 PRs and ALUA
Significant code cleanups done by Christoph Hellwig.
[jejb: fix up for new block bdev exclusive interface. Minor fixes from
Randy Dunlap and Dan Carpenter.]
Signed-off-by: Nicholas A. Bellinger <nab@linux-iscsi.org>
Signed-off-by: James Bottomley <James.Bottomley@suse.de>
2010-12-18 03:11:26 +08:00
|
|
|
|
|
|
|
spin_lock(&dev->se_port_lock);
|
2015-05-26 12:33:08 +08:00
|
|
|
if (dev->export_count == 0x0000ffff) {
|
2011-06-09 01:36:43 +08:00
|
|
|
pr_warn("Reached dev->dev_port_count =="
|
[SCSI] target: Add LIO target core v4.0.0-rc6
LIO target is a full featured in-kernel target framework with the
following feature set:
High-performance, non-blocking, multithreaded architecture with SIMD
support.
Advanced SCSI feature set:
* Persistent Reservations (PRs)
* Asymmetric Logical Unit Assignment (ALUA)
* Protocol and intra-nexus multiplexing, load-balancing and failover (MC/S)
* Full Error Recovery (ERL=0,1,2)
* Active/active task migration and session continuation (ERL=2)
* Thin LUN provisioning (UNMAP and WRITE_SAMExx)
Multiprotocol target plugins
Storage media independence:
* Virtualization of all storage media; transparent mapping of IO to LUNs
* No hard limits on number of LUNs per Target; maximum LUN size ~750 TB
* Backstores: SATA, SAS, SCSI, BluRay, DVD, FLASH, USB, ramdisk, etc.
Standards compliance:
* Full compliance with IETF (RFC 3720)
* Full implementation of SPC-4 PRs and ALUA
Significant code cleanups done by Christoph Hellwig.
[jejb: fix up for new block bdev exclusive interface. Minor fixes from
Randy Dunlap and Dan Carpenter.]
Signed-off-by: Nicholas A. Bellinger <nab@linux-iscsi.org>
Signed-off-by: James Bottomley <James.Bottomley@suse.de>
2010-12-18 03:11:26 +08:00
|
|
|
" 0x0000ffff\n");
|
|
|
|
spin_unlock(&dev->se_port_lock);
|
2015-05-26 12:33:08 +08:00
|
|
|
return -ENOSPC;
|
[SCSI] target: Add LIO target core v4.0.0-rc6
LIO target is a full featured in-kernel target framework with the
following feature set:
High-performance, non-blocking, multithreaded architecture with SIMD
support.
Advanced SCSI feature set:
* Persistent Reservations (PRs)
* Asymmetric Logical Unit Assignment (ALUA)
* Protocol and intra-nexus multiplexing, load-balancing and failover (MC/S)
* Full Error Recovery (ERL=0,1,2)
* Active/active task migration and session continuation (ERL=2)
* Thin LUN provisioning (UNMAP and WRITE_SAMExx)
Multiprotocol target plugins
Storage media independence:
* Virtualization of all storage media; transparent mapping of IO to LUNs
* No hard limits on number of LUNs per Target; maximum LUN size ~750 TB
* Backstores: SATA, SAS, SCSI, BluRay, DVD, FLASH, USB, ramdisk, etc.
Standards compliance:
* Full compliance with IETF (RFC 3720)
* Full implementation of SPC-4 PRs and ALUA
Significant code cleanups done by Christoph Hellwig.
[jejb: fix up for new block bdev exclusive interface. Minor fixes from
Randy Dunlap and Dan Carpenter.]
Signed-off-by: Nicholas A. Bellinger <nab@linux-iscsi.org>
Signed-off-by: James Bottomley <James.Bottomley@suse.de>
2010-12-18 03:11:26 +08:00
|
|
|
}
|
|
|
|
again:
|
|
|
|
/*
|
2012-08-16 21:43:13 +08:00
|
|
|
* Allocate the next RELATIVE TARGET PORT IDENTIFIER for this struct se_device
|
[SCSI] target: Add LIO target core v4.0.0-rc6
LIO target is a full featured in-kernel target framework with the
following feature set:
High-performance, non-blocking, multithreaded architecture with SIMD
support.
Advanced SCSI feature set:
* Persistent Reservations (PRs)
* Asymmetric Logical Unit Assignment (ALUA)
* Protocol and intra-nexus multiplexing, load-balancing and failover (MC/S)
* Full Error Recovery (ERL=0,1,2)
* Active/active task migration and session continuation (ERL=2)
* Thin LUN provisioning (UNMAP and WRITE_SAMExx)
Multiprotocol target plugins
Storage media independence:
* Virtualization of all storage media; transparent mapping of IO to LUNs
* No hard limits on number of LUNs per Target; maximum LUN size ~750 TB
* Backstores: SATA, SAS, SCSI, BluRay, DVD, FLASH, USB, ramdisk, etc.
Standards compliance:
* Full compliance with IETF (RFC 3720)
* Full implementation of SPC-4 PRs and ALUA
Significant code cleanups done by Christoph Hellwig.
[jejb: fix up for new block bdev exclusive interface. Minor fixes from
Randy Dunlap and Dan Carpenter.]
Signed-off-by: Nicholas A. Bellinger <nab@linux-iscsi.org>
Signed-off-by: James Bottomley <James.Bottomley@suse.de>
2010-12-18 03:11:26 +08:00
|
|
|
* Here is the table from spc4r17 section 7.7.3.8.
|
|
|
|
*
|
|
|
|
* Table 473 -- RELATIVE TARGET PORT IDENTIFIER field
|
|
|
|
*
|
|
|
|
* Code Description
|
|
|
|
* 0h Reserved
|
|
|
|
* 1h Relative port 1, historically known as port A
|
|
|
|
* 2h Relative port 2, historically known as port B
|
|
|
|
* 3h to FFFFh Relative port 3 through 65 535
|
|
|
|
*/
|
2015-05-26 12:33:08 +08:00
|
|
|
lun->lun_rtpi = dev->dev_rpti_counter++;
|
|
|
|
if (!lun->lun_rtpi)
|
[SCSI] target: Add LIO target core v4.0.0-rc6
LIO target is a full featured in-kernel target framework with the
following feature set:
High-performance, non-blocking, multithreaded architecture with SIMD
support.
Advanced SCSI feature set:
* Persistent Reservations (PRs)
* Asymmetric Logical Unit Assignment (ALUA)
* Protocol and intra-nexus multiplexing, load-balancing and failover (MC/S)
* Full Error Recovery (ERL=0,1,2)
* Active/active task migration and session continuation (ERL=2)
* Thin LUN provisioning (UNMAP and WRITE_SAMExx)
Multiprotocol target plugins
Storage media independence:
* Virtualization of all storage media; transparent mapping of IO to LUNs
* No hard limits on number of LUNs per Target; maximum LUN size ~750 TB
* Backstores: SATA, SAS, SCSI, BluRay, DVD, FLASH, USB, ramdisk, etc.
Standards compliance:
* Full compliance with IETF (RFC 3720)
* Full implementation of SPC-4 PRs and ALUA
Significant code cleanups done by Christoph Hellwig.
[jejb: fix up for new block bdev exclusive interface. Minor fixes from
Randy Dunlap and Dan Carpenter.]
Signed-off-by: Nicholas A. Bellinger <nab@linux-iscsi.org>
Signed-off-by: James Bottomley <James.Bottomley@suse.de>
2010-12-18 03:11:26 +08:00
|
|
|
goto again;
|
|
|
|
|
2015-05-26 12:33:08 +08:00
|
|
|
list_for_each_entry(tmp, &dev->dev_sep_list, lun_dev_link) {
|
[SCSI] target: Add LIO target core v4.0.0-rc6
LIO target is a full featured in-kernel target framework with the
following feature set:
High-performance, non-blocking, multithreaded architecture with SIMD
support.
Advanced SCSI feature set:
* Persistent Reservations (PRs)
* Asymmetric Logical Unit Assignment (ALUA)
* Protocol and intra-nexus multiplexing, load-balancing and failover (MC/S)
* Full Error Recovery (ERL=0,1,2)
* Active/active task migration and session continuation (ERL=2)
* Thin LUN provisioning (UNMAP and WRITE_SAMExx)
Multiprotocol target plugins
Storage media independence:
* Virtualization of all storage media; transparent mapping of IO to LUNs
* No hard limits on number of LUNs per Target; maximum LUN size ~750 TB
* Backstores: SATA, SAS, SCSI, BluRay, DVD, FLASH, USB, ramdisk, etc.
Standards compliance:
* Full compliance with IETF (RFC 3720)
* Full implementation of SPC-4 PRs and ALUA
Significant code cleanups done by Christoph Hellwig.
[jejb: fix up for new block bdev exclusive interface. Minor fixes from
Randy Dunlap and Dan Carpenter.]
Signed-off-by: Nicholas A. Bellinger <nab@linux-iscsi.org>
Signed-off-by: James Bottomley <James.Bottomley@suse.de>
2010-12-18 03:11:26 +08:00
|
|
|
/*
|
2012-08-16 21:43:13 +08:00
|
|
|
* Make sure RELATIVE TARGET PORT IDENTIFIER is unique
|
[SCSI] target: Add LIO target core v4.0.0-rc6
LIO target is a full featured in-kernel target framework with the
following feature set:
High-performance, non-blocking, multithreaded architecture with SIMD
support.
Advanced SCSI feature set:
* Persistent Reservations (PRs)
* Asymmetric Logical Unit Assignment (ALUA)
* Protocol and intra-nexus multiplexing, load-balancing and failover (MC/S)
* Full Error Recovery (ERL=0,1,2)
* Active/active task migration and session continuation (ERL=2)
* Thin LUN provisioning (UNMAP and WRITE_SAMExx)
Multiprotocol target plugins
Storage media independence:
* Virtualization of all storage media; transparent mapping of IO to LUNs
* No hard limits on number of LUNs per Target; maximum LUN size ~750 TB
* Backstores: SATA, SAS, SCSI, BluRay, DVD, FLASH, USB, ramdisk, etc.
Standards compliance:
* Full compliance with IETF (RFC 3720)
* Full implementation of SPC-4 PRs and ALUA
Significant code cleanups done by Christoph Hellwig.
[jejb: fix up for new block bdev exclusive interface. Minor fixes from
Randy Dunlap and Dan Carpenter.]
Signed-off-by: Nicholas A. Bellinger <nab@linux-iscsi.org>
Signed-off-by: James Bottomley <James.Bottomley@suse.de>
2010-12-18 03:11:26 +08:00
|
|
|
* for 16-bit wrap..
|
|
|
|
*/
|
2015-05-26 12:33:08 +08:00
|
|
|
if (lun->lun_rtpi == tmp->lun_rtpi)
|
[SCSI] target: Add LIO target core v4.0.0-rc6
LIO target is a full featured in-kernel target framework with the
following feature set:
High-performance, non-blocking, multithreaded architecture with SIMD
support.
Advanced SCSI feature set:
* Persistent Reservations (PRs)
* Asymmetric Logical Unit Assignment (ALUA)
* Protocol and intra-nexus multiplexing, load-balancing and failover (MC/S)
* Full Error Recovery (ERL=0,1,2)
* Active/active task migration and session continuation (ERL=2)
* Thin LUN provisioning (UNMAP and WRITE_SAMExx)
Multiprotocol target plugins
Storage media independence:
* Virtualization of all storage media; transparent mapping of IO to LUNs
* No hard limits on number of LUNs per Target; maximum LUN size ~750 TB
* Backstores: SATA, SAS, SCSI, BluRay, DVD, FLASH, USB, ramdisk, etc.
Standards compliance:
* Full compliance with IETF (RFC 3720)
* Full implementation of SPC-4 PRs and ALUA
Significant code cleanups done by Christoph Hellwig.
[jejb: fix up for new block bdev exclusive interface. Minor fixes from
Randy Dunlap and Dan Carpenter.]
Signed-off-by: Nicholas A. Bellinger <nab@linux-iscsi.org>
Signed-off-by: James Bottomley <James.Bottomley@suse.de>
2010-12-18 03:11:26 +08:00
|
|
|
goto again;
|
|
|
|
}
|
|
|
|
spin_unlock(&dev->se_port_lock);
|
|
|
|
|
|
|
|
return 0;
|
|
|
|
}
|
|
|
|
|
2012-10-08 12:03:19 +08:00
|
|
|
static void se_release_vpd_for_dev(struct se_device *dev)
|
[SCSI] target: Add LIO target core v4.0.0-rc6
LIO target is a full featured in-kernel target framework with the
following feature set:
High-performance, non-blocking, multithreaded architecture with SIMD
support.
Advanced SCSI feature set:
* Persistent Reservations (PRs)
* Asymmetric Logical Unit Assignment (ALUA)
* Protocol and intra-nexus multiplexing, load-balancing and failover (MC/S)
* Full Error Recovery (ERL=0,1,2)
* Active/active task migration and session continuation (ERL=2)
* Thin LUN provisioning (UNMAP and WRITE_SAMExx)
Multiprotocol target plugins
Storage media independence:
* Virtualization of all storage media; transparent mapping of IO to LUNs
* No hard limits on number of LUNs per Target; maximum LUN size ~750 TB
* Backstores: SATA, SAS, SCSI, BluRay, DVD, FLASH, USB, ramdisk, etc.
Standards compliance:
* Full compliance with IETF (RFC 3720)
* Full implementation of SPC-4 PRs and ALUA
Significant code cleanups done by Christoph Hellwig.
[jejb: fix up for new block bdev exclusive interface. Minor fixes from
Randy Dunlap and Dan Carpenter.]
Signed-off-by: Nicholas A. Bellinger <nab@linux-iscsi.org>
Signed-off-by: James Bottomley <James.Bottomley@suse.de>
2010-12-18 03:11:26 +08:00
|
|
|
{
|
|
|
|
struct t10_vpd *vpd, *vpd_tmp;
|
|
|
|
|
2012-10-08 12:03:19 +08:00
|
|
|
spin_lock(&dev->t10_wwn.t10_vpd_lock);
|
[SCSI] target: Add LIO target core v4.0.0-rc6
LIO target is a full featured in-kernel target framework with the
following feature set:
High-performance, non-blocking, multithreaded architecture with SIMD
support.
Advanced SCSI feature set:
* Persistent Reservations (PRs)
* Asymmetric Logical Unit Assignment (ALUA)
* Protocol and intra-nexus multiplexing, load-balancing and failover (MC/S)
* Full Error Recovery (ERL=0,1,2)
* Active/active task migration and session continuation (ERL=2)
* Thin LUN provisioning (UNMAP and WRITE_SAMExx)
Multiprotocol target plugins
Storage media independence:
* Virtualization of all storage media; transparent mapping of IO to LUNs
* No hard limits on number of LUNs per Target; maximum LUN size ~750 TB
* Backstores: SATA, SAS, SCSI, BluRay, DVD, FLASH, USB, ramdisk, etc.
Standards compliance:
* Full compliance with IETF (RFC 3720)
* Full implementation of SPC-4 PRs and ALUA
Significant code cleanups done by Christoph Hellwig.
[jejb: fix up for new block bdev exclusive interface. Minor fixes from
Randy Dunlap and Dan Carpenter.]
Signed-off-by: Nicholas A. Bellinger <nab@linux-iscsi.org>
Signed-off-by: James Bottomley <James.Bottomley@suse.de>
2010-12-18 03:11:26 +08:00
|
|
|
list_for_each_entry_safe(vpd, vpd_tmp,
|
2012-10-08 12:03:19 +08:00
|
|
|
&dev->t10_wwn.t10_vpd_list, vpd_list) {
|
[SCSI] target: Add LIO target core v4.0.0-rc6
LIO target is a full featured in-kernel target framework with the
following feature set:
High-performance, non-blocking, multithreaded architecture with SIMD
support.
Advanced SCSI feature set:
* Persistent Reservations (PRs)
* Asymmetric Logical Unit Assignment (ALUA)
* Protocol and intra-nexus multiplexing, load-balancing and failover (MC/S)
* Full Error Recovery (ERL=0,1,2)
* Active/active task migration and session continuation (ERL=2)
* Thin LUN provisioning (UNMAP and WRITE_SAMExx)
Multiprotocol target plugins
Storage media independence:
* Virtualization of all storage media; transparent mapping of IO to LUNs
* No hard limits on number of LUNs per Target; maximum LUN size ~750 TB
* Backstores: SATA, SAS, SCSI, BluRay, DVD, FLASH, USB, ramdisk, etc.
Standards compliance:
* Full compliance with IETF (RFC 3720)
* Full implementation of SPC-4 PRs and ALUA
Significant code cleanups done by Christoph Hellwig.
[jejb: fix up for new block bdev exclusive interface. Minor fixes from
Randy Dunlap and Dan Carpenter.]
Signed-off-by: Nicholas A. Bellinger <nab@linux-iscsi.org>
Signed-off-by: James Bottomley <James.Bottomley@suse.de>
2010-12-18 03:11:26 +08:00
|
|
|
list_del(&vpd->vpd_list);
|
|
|
|
kfree(vpd);
|
|
|
|
}
|
2012-10-08 12:03:19 +08:00
|
|
|
spin_unlock(&dev->t10_wwn.t10_vpd_lock);
|
[SCSI] target: Add LIO target core v4.0.0-rc6
LIO target is a full featured in-kernel target framework with the
following feature set:
High-performance, non-blocking, multithreaded architecture with SIMD
support.
Advanced SCSI feature set:
* Persistent Reservations (PRs)
* Asymmetric Logical Unit Assignment (ALUA)
* Protocol and intra-nexus multiplexing, load-balancing and failover (MC/S)
* Full Error Recovery (ERL=0,1,2)
* Active/active task migration and session continuation (ERL=2)
* Thin LUN provisioning (UNMAP and WRITE_SAMExx)
Multiprotocol target plugins
Storage media independence:
* Virtualization of all storage media; transparent mapping of IO to LUNs
* No hard limits on number of LUNs per Target; maximum LUN size ~750 TB
* Backstores: SATA, SAS, SCSI, BluRay, DVD, FLASH, USB, ramdisk, etc.
Standards compliance:
* Full compliance with IETF (RFC 3720)
* Full implementation of SPC-4 PRs and ALUA
Significant code cleanups done by Christoph Hellwig.
[jejb: fix up for new block bdev exclusive interface. Minor fixes from
Randy Dunlap and Dan Carpenter.]
Signed-off-by: Nicholas A. Bellinger <nab@linux-iscsi.org>
Signed-off-by: James Bottomley <James.Bottomley@suse.de>
2010-12-18 03:11:26 +08:00
|
|
|
}
|
|
|
|
|
2012-07-17 06:17:12 +08:00
|
|
|
static u32 se_dev_align_max_sectors(u32 max_sectors, u32 block_size)
|
2011-08-13 17:11:38 +08:00
|
|
|
{
|
2012-11-01 00:16:45 +08:00
|
|
|
u32 aligned_max_sectors;
|
|
|
|
u32 alignment;
|
2011-08-13 17:11:38 +08:00
|
|
|
/*
|
|
|
|
* Limit max_sectors to a PAGE_SIZE aligned value for modern
|
|
|
|
* transport_allocate_data_tasks() operation.
|
|
|
|
*/
|
2012-11-01 00:16:45 +08:00
|
|
|
alignment = max(1ul, PAGE_SIZE / block_size);
|
|
|
|
aligned_max_sectors = rounddown(max_sectors, alignment);
|
|
|
|
|
|
|
|
if (max_sectors != aligned_max_sectors)
|
|
|
|
pr_info("Rounding down aligned max_sectors from %u to %u\n",
|
|
|
|
max_sectors, aligned_max_sectors);
|
2011-08-13 17:11:38 +08:00
|
|
|
|
2012-11-01 00:16:45 +08:00
|
|
|
return aligned_max_sectors;
|
2011-08-13 17:11:38 +08:00
|
|
|
}
|
|
|
|
|
2015-05-11 10:31:10 +08:00
|
|
|
int core_dev_add_lun(
|
[SCSI] target: Add LIO target core v4.0.0-rc6
LIO target is a full featured in-kernel target framework with the
following feature set:
High-performance, non-blocking, multithreaded architecture with SIMD
support.
Advanced SCSI feature set:
* Persistent Reservations (PRs)
* Asymmetric Logical Unit Assignment (ALUA)
* Protocol and intra-nexus multiplexing, load-balancing and failover (MC/S)
* Full Error Recovery (ERL=0,1,2)
* Active/active task migration and session continuation (ERL=2)
* Thin LUN provisioning (UNMAP and WRITE_SAMExx)
Multiprotocol target plugins
Storage media independence:
* Virtualization of all storage media; transparent mapping of IO to LUNs
* No hard limits on number of LUNs per Target; maximum LUN size ~750 TB
* Backstores: SATA, SAS, SCSI, BluRay, DVD, FLASH, USB, ramdisk, etc.
Standards compliance:
* Full compliance with IETF (RFC 3720)
* Full implementation of SPC-4 PRs and ALUA
Significant code cleanups done by Christoph Hellwig.
[jejb: fix up for new block bdev exclusive interface. Minor fixes from
Randy Dunlap and Dan Carpenter.]
Signed-off-by: Nicholas A. Bellinger <nab@linux-iscsi.org>
Signed-off-by: James Bottomley <James.Bottomley@suse.de>
2010-12-18 03:11:26 +08:00
|
|
|
struct se_portal_group *tpg,
|
|
|
|
struct se_device *dev,
|
2015-05-11 10:31:10 +08:00
|
|
|
struct se_lun *lun)
|
[SCSI] target: Add LIO target core v4.0.0-rc6
LIO target is a full featured in-kernel target framework with the
following feature set:
High-performance, non-blocking, multithreaded architecture with SIMD
support.
Advanced SCSI feature set:
* Persistent Reservations (PRs)
* Asymmetric Logical Unit Assignment (ALUA)
* Protocol and intra-nexus multiplexing, load-balancing and failover (MC/S)
* Full Error Recovery (ERL=0,1,2)
* Active/active task migration and session continuation (ERL=2)
* Thin LUN provisioning (UNMAP and WRITE_SAMExx)
Multiprotocol target plugins
Storage media independence:
* Virtualization of all storage media; transparent mapping of IO to LUNs
* No hard limits on number of LUNs per Target; maximum LUN size ~750 TB
* Backstores: SATA, SAS, SCSI, BluRay, DVD, FLASH, USB, ramdisk, etc.
Standards compliance:
* Full compliance with IETF (RFC 3720)
* Full implementation of SPC-4 PRs and ALUA
Significant code cleanups done by Christoph Hellwig.
[jejb: fix up for new block bdev exclusive interface. Minor fixes from
Randy Dunlap and Dan Carpenter.]
Signed-off-by: Nicholas A. Bellinger <nab@linux-iscsi.org>
Signed-off-by: James Bottomley <James.Bottomley@suse.de>
2010-12-18 03:11:26 +08:00
|
|
|
{
|
2012-01-12 04:43:38 +08:00
|
|
|
int rc;
|
[SCSI] target: Add LIO target core v4.0.0-rc6
LIO target is a full featured in-kernel target framework with the
following feature set:
High-performance, non-blocking, multithreaded architecture with SIMD
support.
Advanced SCSI feature set:
* Persistent Reservations (PRs)
* Asymmetric Logical Unit Assignment (ALUA)
* Protocol and intra-nexus multiplexing, load-balancing and failover (MC/S)
* Full Error Recovery (ERL=0,1,2)
* Active/active task migration and session continuation (ERL=2)
* Thin LUN provisioning (UNMAP and WRITE_SAMExx)
Multiprotocol target plugins
Storage media independence:
* Virtualization of all storage media; transparent mapping of IO to LUNs
* No hard limits on number of LUNs per Target; maximum LUN size ~750 TB
* Backstores: SATA, SAS, SCSI, BluRay, DVD, FLASH, USB, ramdisk, etc.
Standards compliance:
* Full compliance with IETF (RFC 3720)
* Full implementation of SPC-4 PRs and ALUA
Significant code cleanups done by Christoph Hellwig.
[jejb: fix up for new block bdev exclusive interface. Minor fixes from
Randy Dunlap and Dan Carpenter.]
Signed-off-by: Nicholas A. Bellinger <nab@linux-iscsi.org>
Signed-off-by: James Bottomley <James.Bottomley@suse.de>
2010-12-18 03:11:26 +08:00
|
|
|
|
2016-02-26 07:14:32 +08:00
|
|
|
rc = core_tpg_add_lun(tpg, lun, false, dev);
|
2012-01-12 04:43:38 +08:00
|
|
|
if (rc < 0)
|
2015-05-11 10:31:10 +08:00
|
|
|
return rc;
|
[SCSI] target: Add LIO target core v4.0.0-rc6
LIO target is a full featured in-kernel target framework with the
following feature set:
High-performance, non-blocking, multithreaded architecture with SIMD
support.
Advanced SCSI feature set:
* Persistent Reservations (PRs)
* Asymmetric Logical Unit Assignment (ALUA)
* Protocol and intra-nexus multiplexing, load-balancing and failover (MC/S)
* Full Error Recovery (ERL=0,1,2)
* Active/active task migration and session continuation (ERL=2)
* Thin LUN provisioning (UNMAP and WRITE_SAMExx)
Multiprotocol target plugins
Storage media independence:
* Virtualization of all storage media; transparent mapping of IO to LUNs
* No hard limits on number of LUNs per Target; maximum LUN size ~750 TB
* Backstores: SATA, SAS, SCSI, BluRay, DVD, FLASH, USB, ramdisk, etc.
Standards compliance:
* Full compliance with IETF (RFC 3720)
* Full implementation of SPC-4 PRs and ALUA
Significant code cleanups done by Christoph Hellwig.
[jejb: fix up for new block bdev exclusive interface. Minor fixes from
Randy Dunlap and Dan Carpenter.]
Signed-off-by: Nicholas A. Bellinger <nab@linux-iscsi.org>
Signed-off-by: James Bottomley <James.Bottomley@suse.de>
2010-12-18 03:11:26 +08:00
|
|
|
|
2015-06-10 14:41:22 +08:00
|
|
|
pr_debug("%s_TPG[%u]_LUN[%llu] - Activated %s Logical Unit from"
|
2011-07-19 16:55:10 +08:00
|
|
|
" CORE HBA: %u\n", tpg->se_tpg_tfo->get_fabric_name(),
|
2013-11-27 03:55:22 +08:00
|
|
|
tpg->se_tpg_tfo->tpg_get_tag(tpg), lun->unpacked_lun,
|
2012-07-13 08:34:55 +08:00
|
|
|
tpg->se_tpg_tfo->get_fabric_name(), dev->se_hba->hba_id);
|
[SCSI] target: Add LIO target core v4.0.0-rc6
LIO target is a full featured in-kernel target framework with the
following feature set:
High-performance, non-blocking, multithreaded architecture with SIMD
support.
Advanced SCSI feature set:
* Persistent Reservations (PRs)
* Asymmetric Logical Unit Assignment (ALUA)
* Protocol and intra-nexus multiplexing, load-balancing and failover (MC/S)
* Full Error Recovery (ERL=0,1,2)
* Active/active task migration and session continuation (ERL=2)
* Thin LUN provisioning (UNMAP and WRITE_SAMExx)
Multiprotocol target plugins
Storage media independence:
* Virtualization of all storage media; transparent mapping of IO to LUNs
* No hard limits on number of LUNs per Target; maximum LUN size ~750 TB
* Backstores: SATA, SAS, SCSI, BluRay, DVD, FLASH, USB, ramdisk, etc.
Standards compliance:
* Full compliance with IETF (RFC 3720)
* Full implementation of SPC-4 PRs and ALUA
Significant code cleanups done by Christoph Hellwig.
[jejb: fix up for new block bdev exclusive interface. Minor fixes from
Randy Dunlap and Dan Carpenter.]
Signed-off-by: Nicholas A. Bellinger <nab@linux-iscsi.org>
Signed-off-by: James Bottomley <James.Bottomley@suse.de>
2010-12-18 03:11:26 +08:00
|
|
|
/*
|
|
|
|
* Update LUN maps for dynamically added initiators when
|
|
|
|
* generate_node_acl is enabled.
|
|
|
|
*/
|
2011-07-19 16:55:10 +08:00
|
|
|
if (tpg->se_tpg_tfo->tpg_check_demo_mode(tpg)) {
|
[SCSI] target: Add LIO target core v4.0.0-rc6
LIO target is a full featured in-kernel target framework with the
following feature set:
High-performance, non-blocking, multithreaded architecture with SIMD
support.
Advanced SCSI feature set:
* Persistent Reservations (PRs)
* Asymmetric Logical Unit Assignment (ALUA)
* Protocol and intra-nexus multiplexing, load-balancing and failover (MC/S)
* Full Error Recovery (ERL=0,1,2)
* Active/active task migration and session continuation (ERL=2)
* Thin LUN provisioning (UNMAP and WRITE_SAMExx)
Multiprotocol target plugins
Storage media independence:
* Virtualization of all storage media; transparent mapping of IO to LUNs
* No hard limits on number of LUNs per Target; maximum LUN size ~750 TB
* Backstores: SATA, SAS, SCSI, BluRay, DVD, FLASH, USB, ramdisk, etc.
Standards compliance:
* Full compliance with IETF (RFC 3720)
* Full implementation of SPC-4 PRs and ALUA
Significant code cleanups done by Christoph Hellwig.
[jejb: fix up for new block bdev exclusive interface. Minor fixes from
Randy Dunlap and Dan Carpenter.]
Signed-off-by: Nicholas A. Bellinger <nab@linux-iscsi.org>
Signed-off-by: James Bottomley <James.Bottomley@suse.de>
2010-12-18 03:11:26 +08:00
|
|
|
struct se_node_acl *acl;
|
2015-03-09 06:33:47 +08:00
|
|
|
|
|
|
|
mutex_lock(&tpg->acl_node_mutex);
|
[SCSI] target: Add LIO target core v4.0.0-rc6
LIO target is a full featured in-kernel target framework with the
following feature set:
High-performance, non-blocking, multithreaded architecture with SIMD
support.
Advanced SCSI feature set:
* Persistent Reservations (PRs)
* Asymmetric Logical Unit Assignment (ALUA)
* Protocol and intra-nexus multiplexing, load-balancing and failover (MC/S)
* Full Error Recovery (ERL=0,1,2)
* Active/active task migration and session continuation (ERL=2)
* Thin LUN provisioning (UNMAP and WRITE_SAMExx)
Multiprotocol target plugins
Storage media independence:
* Virtualization of all storage media; transparent mapping of IO to LUNs
* No hard limits on number of LUNs per Target; maximum LUN size ~750 TB
* Backstores: SATA, SAS, SCSI, BluRay, DVD, FLASH, USB, ramdisk, etc.
Standards compliance:
* Full compliance with IETF (RFC 3720)
* Full implementation of SPC-4 PRs and ALUA
Significant code cleanups done by Christoph Hellwig.
[jejb: fix up for new block bdev exclusive interface. Minor fixes from
Randy Dunlap and Dan Carpenter.]
Signed-off-by: Nicholas A. Bellinger <nab@linux-iscsi.org>
Signed-off-by: James Bottomley <James.Bottomley@suse.de>
2010-12-18 03:11:26 +08:00
|
|
|
list_for_each_entry(acl, &tpg->acl_node_list, acl_list) {
|
2011-07-27 08:48:43 +08:00
|
|
|
if (acl->dynamic_node_acl &&
|
|
|
|
(!tpg->se_tpg_tfo->tpg_check_demo_mode_login_only ||
|
|
|
|
!tpg->se_tpg_tfo->tpg_check_demo_mode_login_only(tpg))) {
|
2015-05-22 10:05:19 +08:00
|
|
|
core_tpg_add_node_to_devs(acl, tpg, lun);
|
[SCSI] target: Add LIO target core v4.0.0-rc6
LIO target is a full featured in-kernel target framework with the
following feature set:
High-performance, non-blocking, multithreaded architecture with SIMD
support.
Advanced SCSI feature set:
* Persistent Reservations (PRs)
* Asymmetric Logical Unit Assignment (ALUA)
* Protocol and intra-nexus multiplexing, load-balancing and failover (MC/S)
* Full Error Recovery (ERL=0,1,2)
* Active/active task migration and session continuation (ERL=2)
* Thin LUN provisioning (UNMAP and WRITE_SAMExx)
Multiprotocol target plugins
Storage media independence:
* Virtualization of all storage media; transparent mapping of IO to LUNs
* No hard limits on number of LUNs per Target; maximum LUN size ~750 TB
* Backstores: SATA, SAS, SCSI, BluRay, DVD, FLASH, USB, ramdisk, etc.
Standards compliance:
* Full compliance with IETF (RFC 3720)
* Full implementation of SPC-4 PRs and ALUA
Significant code cleanups done by Christoph Hellwig.
[jejb: fix up for new block bdev exclusive interface. Minor fixes from
Randy Dunlap and Dan Carpenter.]
Signed-off-by: Nicholas A. Bellinger <nab@linux-iscsi.org>
Signed-off-by: James Bottomley <James.Bottomley@suse.de>
2010-12-18 03:11:26 +08:00
|
|
|
}
|
|
|
|
}
|
2015-03-09 06:33:47 +08:00
|
|
|
mutex_unlock(&tpg->acl_node_mutex);
|
[SCSI] target: Add LIO target core v4.0.0-rc6
LIO target is a full featured in-kernel target framework with the
following feature set:
High-performance, non-blocking, multithreaded architecture with SIMD
support.
Advanced SCSI feature set:
* Persistent Reservations (PRs)
* Asymmetric Logical Unit Assignment (ALUA)
* Protocol and intra-nexus multiplexing, load-balancing and failover (MC/S)
* Full Error Recovery (ERL=0,1,2)
* Active/active task migration and session continuation (ERL=2)
* Thin LUN provisioning (UNMAP and WRITE_SAMExx)
Multiprotocol target plugins
Storage media independence:
* Virtualization of all storage media; transparent mapping of IO to LUNs
* No hard limits on number of LUNs per Target; maximum LUN size ~750 TB
* Backstores: SATA, SAS, SCSI, BluRay, DVD, FLASH, USB, ramdisk, etc.
Standards compliance:
* Full compliance with IETF (RFC 3720)
* Full implementation of SPC-4 PRs and ALUA
Significant code cleanups done by Christoph Hellwig.
[jejb: fix up for new block bdev exclusive interface. Minor fixes from
Randy Dunlap and Dan Carpenter.]
Signed-off-by: Nicholas A. Bellinger <nab@linux-iscsi.org>
Signed-off-by: James Bottomley <James.Bottomley@suse.de>
2010-12-18 03:11:26 +08:00
|
|
|
}
|
|
|
|
|
2015-05-11 10:31:10 +08:00
|
|
|
return 0;
|
[SCSI] target: Add LIO target core v4.0.0-rc6
LIO target is a full featured in-kernel target framework with the
following feature set:
High-performance, non-blocking, multithreaded architecture with SIMD
support.
Advanced SCSI feature set:
* Persistent Reservations (PRs)
* Asymmetric Logical Unit Assignment (ALUA)
* Protocol and intra-nexus multiplexing, load-balancing and failover (MC/S)
* Full Error Recovery (ERL=0,1,2)
* Active/active task migration and session continuation (ERL=2)
* Thin LUN provisioning (UNMAP and WRITE_SAMExx)
Multiprotocol target plugins
Storage media independence:
* Virtualization of all storage media; transparent mapping of IO to LUNs
* No hard limits on number of LUNs per Target; maximum LUN size ~750 TB
* Backstores: SATA, SAS, SCSI, BluRay, DVD, FLASH, USB, ramdisk, etc.
Standards compliance:
* Full compliance with IETF (RFC 3720)
* Full implementation of SPC-4 PRs and ALUA
Significant code cleanups done by Christoph Hellwig.
[jejb: fix up for new block bdev exclusive interface. Minor fixes from
Randy Dunlap and Dan Carpenter.]
Signed-off-by: Nicholas A. Bellinger <nab@linux-iscsi.org>
Signed-off-by: James Bottomley <James.Bottomley@suse.de>
2010-12-18 03:11:26 +08:00
|
|
|
}
|
|
|
|
|
|
|
|
/* core_dev_del_lun():
|
|
|
|
*
|
|
|
|
*
|
|
|
|
*/
|
2014-07-01 07:39:44 +08:00
|
|
|
void core_dev_del_lun(
|
[SCSI] target: Add LIO target core v4.0.0-rc6
LIO target is a full featured in-kernel target framework with the
following feature set:
High-performance, non-blocking, multithreaded architecture with SIMD
support.
Advanced SCSI feature set:
* Persistent Reservations (PRs)
* Asymmetric Logical Unit Assignment (ALUA)
* Protocol and intra-nexus multiplexing, load-balancing and failover (MC/S)
* Full Error Recovery (ERL=0,1,2)
* Active/active task migration and session continuation (ERL=2)
* Thin LUN provisioning (UNMAP and WRITE_SAMExx)
Multiprotocol target plugins
Storage media independence:
* Virtualization of all storage media; transparent mapping of IO to LUNs
* No hard limits on number of LUNs per Target; maximum LUN size ~750 TB
* Backstores: SATA, SAS, SCSI, BluRay, DVD, FLASH, USB, ramdisk, etc.
Standards compliance:
* Full compliance with IETF (RFC 3720)
* Full implementation of SPC-4 PRs and ALUA
Significant code cleanups done by Christoph Hellwig.
[jejb: fix up for new block bdev exclusive interface. Minor fixes from
Randy Dunlap and Dan Carpenter.]
Signed-off-by: Nicholas A. Bellinger <nab@linux-iscsi.org>
Signed-off-by: James Bottomley <James.Bottomley@suse.de>
2010-12-18 03:11:26 +08:00
|
|
|
struct se_portal_group *tpg,
|
2014-07-01 07:39:44 +08:00
|
|
|
struct se_lun *lun)
|
[SCSI] target: Add LIO target core v4.0.0-rc6
LIO target is a full featured in-kernel target framework with the
following feature set:
High-performance, non-blocking, multithreaded architecture with SIMD
support.
Advanced SCSI feature set:
* Persistent Reservations (PRs)
* Asymmetric Logical Unit Assignment (ALUA)
* Protocol and intra-nexus multiplexing, load-balancing and failover (MC/S)
* Full Error Recovery (ERL=0,1,2)
* Active/active task migration and session continuation (ERL=2)
* Thin LUN provisioning (UNMAP and WRITE_SAMExx)
Multiprotocol target plugins
Storage media independence:
* Virtualization of all storage media; transparent mapping of IO to LUNs
* No hard limits on number of LUNs per Target; maximum LUN size ~750 TB
* Backstores: SATA, SAS, SCSI, BluRay, DVD, FLASH, USB, ramdisk, etc.
Standards compliance:
* Full compliance with IETF (RFC 3720)
* Full implementation of SPC-4 PRs and ALUA
Significant code cleanups done by Christoph Hellwig.
[jejb: fix up for new block bdev exclusive interface. Minor fixes from
Randy Dunlap and Dan Carpenter.]
Signed-off-by: Nicholas A. Bellinger <nab@linux-iscsi.org>
Signed-off-by: James Bottomley <James.Bottomley@suse.de>
2010-12-18 03:11:26 +08:00
|
|
|
{
|
2015-06-10 14:41:22 +08:00
|
|
|
pr_debug("%s_TPG[%u]_LUN[%llu] - Deactivating %s Logical Unit from"
|
2011-07-19 16:55:10 +08:00
|
|
|
" device object\n", tpg->se_tpg_tfo->get_fabric_name(),
|
2014-07-01 07:39:44 +08:00
|
|
|
tpg->se_tpg_tfo->tpg_get_tag(tpg), lun->unpacked_lun,
|
2011-07-19 16:55:10 +08:00
|
|
|
tpg->se_tpg_tfo->get_fabric_name());
|
[SCSI] target: Add LIO target core v4.0.0-rc6
LIO target is a full featured in-kernel target framework with the
following feature set:
High-performance, non-blocking, multithreaded architecture with SIMD
support.
Advanced SCSI feature set:
* Persistent Reservations (PRs)
* Asymmetric Logical Unit Assignment (ALUA)
* Protocol and intra-nexus multiplexing, load-balancing and failover (MC/S)
* Full Error Recovery (ERL=0,1,2)
* Active/active task migration and session continuation (ERL=2)
* Thin LUN provisioning (UNMAP and WRITE_SAMExx)
Multiprotocol target plugins
Storage media independence:
* Virtualization of all storage media; transparent mapping of IO to LUNs
* No hard limits on number of LUNs per Target; maximum LUN size ~750 TB
* Backstores: SATA, SAS, SCSI, BluRay, DVD, FLASH, USB, ramdisk, etc.
Standards compliance:
* Full compliance with IETF (RFC 3720)
* Full implementation of SPC-4 PRs and ALUA
Significant code cleanups done by Christoph Hellwig.
[jejb: fix up for new block bdev exclusive interface. Minor fixes from
Randy Dunlap and Dan Carpenter.]
Signed-off-by: Nicholas A. Bellinger <nab@linux-iscsi.org>
Signed-off-by: James Bottomley <James.Bottomley@suse.de>
2010-12-18 03:11:26 +08:00
|
|
|
|
2014-07-01 07:39:44 +08:00
|
|
|
core_tpg_remove_lun(tpg, lun);
|
[SCSI] target: Add LIO target core v4.0.0-rc6
LIO target is a full featured in-kernel target framework with the
following feature set:
High-performance, non-blocking, multithreaded architecture with SIMD
support.
Advanced SCSI feature set:
* Persistent Reservations (PRs)
* Asymmetric Logical Unit Assignment (ALUA)
* Protocol and intra-nexus multiplexing, load-balancing and failover (MC/S)
* Full Error Recovery (ERL=0,1,2)
* Active/active task migration and session continuation (ERL=2)
* Thin LUN provisioning (UNMAP and WRITE_SAMExx)
Multiprotocol target plugins
Storage media independence:
* Virtualization of all storage media; transparent mapping of IO to LUNs
* No hard limits on number of LUNs per Target; maximum LUN size ~750 TB
* Backstores: SATA, SAS, SCSI, BluRay, DVD, FLASH, USB, ramdisk, etc.
Standards compliance:
* Full compliance with IETF (RFC 3720)
* Full implementation of SPC-4 PRs and ALUA
Significant code cleanups done by Christoph Hellwig.
[jejb: fix up for new block bdev exclusive interface. Minor fixes from
Randy Dunlap and Dan Carpenter.]
Signed-off-by: Nicholas A. Bellinger <nab@linux-iscsi.org>
Signed-off-by: James Bottomley <James.Bottomley@suse.de>
2010-12-18 03:11:26 +08:00
|
|
|
}
|
|
|
|
|
|
|
|
struct se_lun_acl *core_dev_init_initiator_node_lun_acl(
|
|
|
|
struct se_portal_group *tpg,
|
2013-02-19 10:00:33 +08:00
|
|
|
struct se_node_acl *nacl,
|
2015-06-10 14:41:22 +08:00
|
|
|
u64 mapped_lun,
|
[SCSI] target: Add LIO target core v4.0.0-rc6
LIO target is a full featured in-kernel target framework with the
following feature set:
High-performance, non-blocking, multithreaded architecture with SIMD
support.
Advanced SCSI feature set:
* Persistent Reservations (PRs)
* Asymmetric Logical Unit Assignment (ALUA)
* Protocol and intra-nexus multiplexing, load-balancing and failover (MC/S)
* Full Error Recovery (ERL=0,1,2)
* Active/active task migration and session continuation (ERL=2)
* Thin LUN provisioning (UNMAP and WRITE_SAMExx)
Multiprotocol target plugins
Storage media independence:
* Virtualization of all storage media; transparent mapping of IO to LUNs
* No hard limits on number of LUNs per Target; maximum LUN size ~750 TB
* Backstores: SATA, SAS, SCSI, BluRay, DVD, FLASH, USB, ramdisk, etc.
Standards compliance:
* Full compliance with IETF (RFC 3720)
* Full implementation of SPC-4 PRs and ALUA
Significant code cleanups done by Christoph Hellwig.
[jejb: fix up for new block bdev exclusive interface. Minor fixes from
Randy Dunlap and Dan Carpenter.]
Signed-off-by: Nicholas A. Bellinger <nab@linux-iscsi.org>
Signed-off-by: James Bottomley <James.Bottomley@suse.de>
2010-12-18 03:11:26 +08:00
|
|
|
int *ret)
|
|
|
|
{
|
|
|
|
struct se_lun_acl *lacl;
|
|
|
|
|
2013-02-19 10:00:33 +08:00
|
|
|
if (strlen(nacl->initiatorname) >= TRANSPORT_IQN_LEN) {
|
2011-06-09 01:36:43 +08:00
|
|
|
pr_err("%s InitiatorName exceeds maximum size.\n",
|
2011-07-19 16:55:10 +08:00
|
|
|
tpg->se_tpg_tfo->get_fabric_name());
|
[SCSI] target: Add LIO target core v4.0.0-rc6
LIO target is a full featured in-kernel target framework with the
following feature set:
High-performance, non-blocking, multithreaded architecture with SIMD
support.
Advanced SCSI feature set:
* Persistent Reservations (PRs)
* Asymmetric Logical Unit Assignment (ALUA)
* Protocol and intra-nexus multiplexing, load-balancing and failover (MC/S)
* Full Error Recovery (ERL=0,1,2)
* Active/active task migration and session continuation (ERL=2)
* Thin LUN provisioning (UNMAP and WRITE_SAMExx)
Multiprotocol target plugins
Storage media independence:
* Virtualization of all storage media; transparent mapping of IO to LUNs
* No hard limits on number of LUNs per Target; maximum LUN size ~750 TB
* Backstores: SATA, SAS, SCSI, BluRay, DVD, FLASH, USB, ramdisk, etc.
Standards compliance:
* Full compliance with IETF (RFC 3720)
* Full implementation of SPC-4 PRs and ALUA
Significant code cleanups done by Christoph Hellwig.
[jejb: fix up for new block bdev exclusive interface. Minor fixes from
Randy Dunlap and Dan Carpenter.]
Signed-off-by: Nicholas A. Bellinger <nab@linux-iscsi.org>
Signed-off-by: James Bottomley <James.Bottomley@suse.de>
2010-12-18 03:11:26 +08:00
|
|
|
*ret = -EOVERFLOW;
|
|
|
|
return NULL;
|
|
|
|
}
|
|
|
|
lacl = kzalloc(sizeof(struct se_lun_acl), GFP_KERNEL);
|
2011-06-09 01:36:43 +08:00
|
|
|
if (!lacl) {
|
|
|
|
pr_err("Unable to allocate memory for struct se_lun_acl.\n");
|
[SCSI] target: Add LIO target core v4.0.0-rc6
LIO target is a full featured in-kernel target framework with the
following feature set:
High-performance, non-blocking, multithreaded architecture with SIMD
support.
Advanced SCSI feature set:
* Persistent Reservations (PRs)
* Asymmetric Logical Unit Assignment (ALUA)
* Protocol and intra-nexus multiplexing, load-balancing and failover (MC/S)
* Full Error Recovery (ERL=0,1,2)
* Active/active task migration and session continuation (ERL=2)
* Thin LUN provisioning (UNMAP and WRITE_SAMExx)
Multiprotocol target plugins
Storage media independence:
* Virtualization of all storage media; transparent mapping of IO to LUNs
* No hard limits on number of LUNs per Target; maximum LUN size ~750 TB
* Backstores: SATA, SAS, SCSI, BluRay, DVD, FLASH, USB, ramdisk, etc.
Standards compliance:
* Full compliance with IETF (RFC 3720)
* Full implementation of SPC-4 PRs and ALUA
Significant code cleanups done by Christoph Hellwig.
[jejb: fix up for new block bdev exclusive interface. Minor fixes from
Randy Dunlap and Dan Carpenter.]
Signed-off-by: Nicholas A. Bellinger <nab@linux-iscsi.org>
Signed-off-by: James Bottomley <James.Bottomley@suse.de>
2010-12-18 03:11:26 +08:00
|
|
|
*ret = -ENOMEM;
|
|
|
|
return NULL;
|
|
|
|
}
|
|
|
|
|
|
|
|
lacl->mapped_lun = mapped_lun;
|
|
|
|
lacl->se_lun_nacl = nacl;
|
|
|
|
|
|
|
|
return lacl;
|
|
|
|
}
|
|
|
|
|
|
|
|
int core_dev_add_initiator_node_lun_acl(
|
|
|
|
struct se_portal_group *tpg,
|
|
|
|
struct se_lun_acl *lacl,
|
2015-05-11 10:31:10 +08:00
|
|
|
struct se_lun *lun,
|
2016-02-26 07:14:32 +08:00
|
|
|
bool lun_access_ro)
|
[SCSI] target: Add LIO target core v4.0.0-rc6
LIO target is a full featured in-kernel target framework with the
following feature set:
High-performance, non-blocking, multithreaded architecture with SIMD
support.
Advanced SCSI feature set:
* Persistent Reservations (PRs)
* Asymmetric Logical Unit Assignment (ALUA)
* Protocol and intra-nexus multiplexing, load-balancing and failover (MC/S)
* Full Error Recovery (ERL=0,1,2)
* Active/active task migration and session continuation (ERL=2)
* Thin LUN provisioning (UNMAP and WRITE_SAMExx)
Multiprotocol target plugins
Storage media independence:
* Virtualization of all storage media; transparent mapping of IO to LUNs
* No hard limits on number of LUNs per Target; maximum LUN size ~750 TB
* Backstores: SATA, SAS, SCSI, BluRay, DVD, FLASH, USB, ramdisk, etc.
Standards compliance:
* Full compliance with IETF (RFC 3720)
* Full implementation of SPC-4 PRs and ALUA
Significant code cleanups done by Christoph Hellwig.
[jejb: fix up for new block bdev exclusive interface. Minor fixes from
Randy Dunlap and Dan Carpenter.]
Signed-off-by: Nicholas A. Bellinger <nab@linux-iscsi.org>
Signed-off-by: James Bottomley <James.Bottomley@suse.de>
2010-12-18 03:11:26 +08:00
|
|
|
{
|
2015-05-11 10:31:10 +08:00
|
|
|
struct se_node_acl *nacl = lacl->se_lun_nacl;
|
2015-05-19 15:03:07 +08:00
|
|
|
/*
|
|
|
|
* rcu_dereference_raw protected by se_lun->lun_group symlink
|
|
|
|
* reference to se_device->dev_group.
|
|
|
|
*/
|
|
|
|
struct se_device *dev = rcu_dereference_raw(lun->lun_se_dev);
|
[SCSI] target: Add LIO target core v4.0.0-rc6
LIO target is a full featured in-kernel target framework with the
following feature set:
High-performance, non-blocking, multithreaded architecture with SIMD
support.
Advanced SCSI feature set:
* Persistent Reservations (PRs)
* Asymmetric Logical Unit Assignment (ALUA)
* Protocol and intra-nexus multiplexing, load-balancing and failover (MC/S)
* Full Error Recovery (ERL=0,1,2)
* Active/active task migration and session continuation (ERL=2)
* Thin LUN provisioning (UNMAP and WRITE_SAMExx)
Multiprotocol target plugins
Storage media independence:
* Virtualization of all storage media; transparent mapping of IO to LUNs
* No hard limits on number of LUNs per Target; maximum LUN size ~750 TB
* Backstores: SATA, SAS, SCSI, BluRay, DVD, FLASH, USB, ramdisk, etc.
Standards compliance:
* Full compliance with IETF (RFC 3720)
* Full implementation of SPC-4 PRs and ALUA
Significant code cleanups done by Christoph Hellwig.
[jejb: fix up for new block bdev exclusive interface. Minor fixes from
Randy Dunlap and Dan Carpenter.]
Signed-off-by: Nicholas A. Bellinger <nab@linux-iscsi.org>
Signed-off-by: James Bottomley <James.Bottomley@suse.de>
2010-12-18 03:11:26 +08:00
|
|
|
|
2011-06-09 01:36:43 +08:00
|
|
|
if (!nacl)
|
[SCSI] target: Add LIO target core v4.0.0-rc6
LIO target is a full featured in-kernel target framework with the
following feature set:
High-performance, non-blocking, multithreaded architecture with SIMD
support.
Advanced SCSI feature set:
* Persistent Reservations (PRs)
* Asymmetric Logical Unit Assignment (ALUA)
* Protocol and intra-nexus multiplexing, load-balancing and failover (MC/S)
* Full Error Recovery (ERL=0,1,2)
* Active/active task migration and session continuation (ERL=2)
* Thin LUN provisioning (UNMAP and WRITE_SAMExx)
Multiprotocol target plugins
Storage media independence:
* Virtualization of all storage media; transparent mapping of IO to LUNs
* No hard limits on number of LUNs per Target; maximum LUN size ~750 TB
* Backstores: SATA, SAS, SCSI, BluRay, DVD, FLASH, USB, ramdisk, etc.
Standards compliance:
* Full compliance with IETF (RFC 3720)
* Full implementation of SPC-4 PRs and ALUA
Significant code cleanups done by Christoph Hellwig.
[jejb: fix up for new block bdev exclusive interface. Minor fixes from
Randy Dunlap and Dan Carpenter.]
Signed-off-by: Nicholas A. Bellinger <nab@linux-iscsi.org>
Signed-off-by: James Bottomley <James.Bottomley@suse.de>
2010-12-18 03:11:26 +08:00
|
|
|
return -EINVAL;
|
|
|
|
|
2016-02-26 07:14:32 +08:00
|
|
|
if (lun->lun_access_ro)
|
|
|
|
lun_access_ro = true;
|
[SCSI] target: Add LIO target core v4.0.0-rc6
LIO target is a full featured in-kernel target framework with the
following feature set:
High-performance, non-blocking, multithreaded architecture with SIMD
support.
Advanced SCSI feature set:
* Persistent Reservations (PRs)
* Asymmetric Logical Unit Assignment (ALUA)
* Protocol and intra-nexus multiplexing, load-balancing and failover (MC/S)
* Full Error Recovery (ERL=0,1,2)
* Active/active task migration and session continuation (ERL=2)
* Thin LUN provisioning (UNMAP and WRITE_SAMExx)
Multiprotocol target plugins
Storage media independence:
* Virtualization of all storage media; transparent mapping of IO to LUNs
* No hard limits on number of LUNs per Target; maximum LUN size ~750 TB
* Backstores: SATA, SAS, SCSI, BluRay, DVD, FLASH, USB, ramdisk, etc.
Standards compliance:
* Full compliance with IETF (RFC 3720)
* Full implementation of SPC-4 PRs and ALUA
Significant code cleanups done by Christoph Hellwig.
[jejb: fix up for new block bdev exclusive interface. Minor fixes from
Randy Dunlap and Dan Carpenter.]
Signed-off-by: Nicholas A. Bellinger <nab@linux-iscsi.org>
Signed-off-by: James Bottomley <James.Bottomley@suse.de>
2010-12-18 03:11:26 +08:00
|
|
|
|
|
|
|
lacl->se_lun = lun;
|
|
|
|
|
2012-07-13 08:34:58 +08:00
|
|
|
if (core_enable_device_list_for_node(lun, lacl, lacl->mapped_lun,
|
2016-02-26 07:14:32 +08:00
|
|
|
lun_access_ro, nacl, tpg) < 0)
|
[SCSI] target: Add LIO target core v4.0.0-rc6
LIO target is a full featured in-kernel target framework with the
following feature set:
High-performance, non-blocking, multithreaded architecture with SIMD
support.
Advanced SCSI feature set:
* Persistent Reservations (PRs)
* Asymmetric Logical Unit Assignment (ALUA)
* Protocol and intra-nexus multiplexing, load-balancing and failover (MC/S)
* Full Error Recovery (ERL=0,1,2)
* Active/active task migration and session continuation (ERL=2)
* Thin LUN provisioning (UNMAP and WRITE_SAMExx)
Multiprotocol target plugins
Storage media independence:
* Virtualization of all storage media; transparent mapping of IO to LUNs
* No hard limits on number of LUNs per Target; maximum LUN size ~750 TB
* Backstores: SATA, SAS, SCSI, BluRay, DVD, FLASH, USB, ramdisk, etc.
Standards compliance:
* Full compliance with IETF (RFC 3720)
* Full implementation of SPC-4 PRs and ALUA
Significant code cleanups done by Christoph Hellwig.
[jejb: fix up for new block bdev exclusive interface. Minor fixes from
Randy Dunlap and Dan Carpenter.]
Signed-off-by: Nicholas A. Bellinger <nab@linux-iscsi.org>
Signed-off-by: James Bottomley <James.Bottomley@suse.de>
2010-12-18 03:11:26 +08:00
|
|
|
return -EINVAL;
|
|
|
|
|
2015-06-10 14:41:22 +08:00
|
|
|
pr_debug("%s_TPG[%hu]_LUN[%llu->%llu] - Added %s ACL for "
|
2011-07-19 16:55:10 +08:00
|
|
|
" InitiatorNode: %s\n", tpg->se_tpg_tfo->get_fabric_name(),
|
2015-05-11 10:31:10 +08:00
|
|
|
tpg->se_tpg_tfo->tpg_get_tag(tpg), lun->unpacked_lun, lacl->mapped_lun,
|
2016-02-26 07:14:32 +08:00
|
|
|
lun_access_ro ? "RO" : "RW",
|
2015-07-21 07:29:50 +08:00
|
|
|
nacl->initiatorname);
|
[SCSI] target: Add LIO target core v4.0.0-rc6
LIO target is a full featured in-kernel target framework with the
following feature set:
High-performance, non-blocking, multithreaded architecture with SIMD
support.
Advanced SCSI feature set:
* Persistent Reservations (PRs)
* Asymmetric Logical Unit Assignment (ALUA)
* Protocol and intra-nexus multiplexing, load-balancing and failover (MC/S)
* Full Error Recovery (ERL=0,1,2)
* Active/active task migration and session continuation (ERL=2)
* Thin LUN provisioning (UNMAP and WRITE_SAMExx)
Multiprotocol target plugins
Storage media independence:
* Virtualization of all storage media; transparent mapping of IO to LUNs
* No hard limits on number of LUNs per Target; maximum LUN size ~750 TB
* Backstores: SATA, SAS, SCSI, BluRay, DVD, FLASH, USB, ramdisk, etc.
Standards compliance:
* Full compliance with IETF (RFC 3720)
* Full implementation of SPC-4 PRs and ALUA
Significant code cleanups done by Christoph Hellwig.
[jejb: fix up for new block bdev exclusive interface. Minor fixes from
Randy Dunlap and Dan Carpenter.]
Signed-off-by: Nicholas A. Bellinger <nab@linux-iscsi.org>
Signed-off-by: James Bottomley <James.Bottomley@suse.de>
2010-12-18 03:11:26 +08:00
|
|
|
/*
|
|
|
|
* Check to see if there are any existing persistent reservation APTPL
|
|
|
|
* pre-registrations that need to be enabled for this LUN ACL..
|
|
|
|
*/
|
2015-05-19 15:03:07 +08:00
|
|
|
core_scsi3_check_aptpl_registration(dev, tpg, lun, nacl,
|
2014-10-04 12:23:15 +08:00
|
|
|
lacl->mapped_lun);
|
[SCSI] target: Add LIO target core v4.0.0-rc6
LIO target is a full featured in-kernel target framework with the
following feature set:
High-performance, non-blocking, multithreaded architecture with SIMD
support.
Advanced SCSI feature set:
* Persistent Reservations (PRs)
* Asymmetric Logical Unit Assignment (ALUA)
* Protocol and intra-nexus multiplexing, load-balancing and failover (MC/S)
* Full Error Recovery (ERL=0,1,2)
* Active/active task migration and session continuation (ERL=2)
* Thin LUN provisioning (UNMAP and WRITE_SAMExx)
Multiprotocol target plugins
Storage media independence:
* Virtualization of all storage media; transparent mapping of IO to LUNs
* No hard limits on number of LUNs per Target; maximum LUN size ~750 TB
* Backstores: SATA, SAS, SCSI, BluRay, DVD, FLASH, USB, ramdisk, etc.
Standards compliance:
* Full compliance with IETF (RFC 3720)
* Full implementation of SPC-4 PRs and ALUA
Significant code cleanups done by Christoph Hellwig.
[jejb: fix up for new block bdev exclusive interface. Minor fixes from
Randy Dunlap and Dan Carpenter.]
Signed-off-by: Nicholas A. Bellinger <nab@linux-iscsi.org>
Signed-off-by: James Bottomley <James.Bottomley@suse.de>
2010-12-18 03:11:26 +08:00
|
|
|
return 0;
|
|
|
|
}
|
|
|
|
|
|
|
|
int core_dev_del_initiator_node_lun_acl(
|
|
|
|
struct se_lun *lun,
|
|
|
|
struct se_lun_acl *lacl)
|
|
|
|
{
|
2015-05-26 12:33:08 +08:00
|
|
|
struct se_portal_group *tpg = lun->lun_tpg;
|
[SCSI] target: Add LIO target core v4.0.0-rc6
LIO target is a full featured in-kernel target framework with the
following feature set:
High-performance, non-blocking, multithreaded architecture with SIMD
support.
Advanced SCSI feature set:
* Persistent Reservations (PRs)
* Asymmetric Logical Unit Assignment (ALUA)
* Protocol and intra-nexus multiplexing, load-balancing and failover (MC/S)
* Full Error Recovery (ERL=0,1,2)
* Active/active task migration and session continuation (ERL=2)
* Thin LUN provisioning (UNMAP and WRITE_SAMExx)
Multiprotocol target plugins
Storage media independence:
* Virtualization of all storage media; transparent mapping of IO to LUNs
* No hard limits on number of LUNs per Target; maximum LUN size ~750 TB
* Backstores: SATA, SAS, SCSI, BluRay, DVD, FLASH, USB, ramdisk, etc.
Standards compliance:
* Full compliance with IETF (RFC 3720)
* Full implementation of SPC-4 PRs and ALUA
Significant code cleanups done by Christoph Hellwig.
[jejb: fix up for new block bdev exclusive interface. Minor fixes from
Randy Dunlap and Dan Carpenter.]
Signed-off-by: Nicholas A. Bellinger <nab@linux-iscsi.org>
Signed-off-by: James Bottomley <James.Bottomley@suse.de>
2010-12-18 03:11:26 +08:00
|
|
|
struct se_node_acl *nacl;
|
2015-03-23 11:42:19 +08:00
|
|
|
struct se_dev_entry *deve;
|
[SCSI] target: Add LIO target core v4.0.0-rc6
LIO target is a full featured in-kernel target framework with the
following feature set:
High-performance, non-blocking, multithreaded architecture with SIMD
support.
Advanced SCSI feature set:
* Persistent Reservations (PRs)
* Asymmetric Logical Unit Assignment (ALUA)
* Protocol and intra-nexus multiplexing, load-balancing and failover (MC/S)
* Full Error Recovery (ERL=0,1,2)
* Active/active task migration and session continuation (ERL=2)
* Thin LUN provisioning (UNMAP and WRITE_SAMExx)
Multiprotocol target plugins
Storage media independence:
* Virtualization of all storage media; transparent mapping of IO to LUNs
* No hard limits on number of LUNs per Target; maximum LUN size ~750 TB
* Backstores: SATA, SAS, SCSI, BluRay, DVD, FLASH, USB, ramdisk, etc.
Standards compliance:
* Full compliance with IETF (RFC 3720)
* Full implementation of SPC-4 PRs and ALUA
Significant code cleanups done by Christoph Hellwig.
[jejb: fix up for new block bdev exclusive interface. Minor fixes from
Randy Dunlap and Dan Carpenter.]
Signed-off-by: Nicholas A. Bellinger <nab@linux-iscsi.org>
Signed-off-by: James Bottomley <James.Bottomley@suse.de>
2010-12-18 03:11:26 +08:00
|
|
|
|
|
|
|
nacl = lacl->se_lun_nacl;
|
2011-06-09 01:36:43 +08:00
|
|
|
if (!nacl)
|
[SCSI] target: Add LIO target core v4.0.0-rc6
LIO target is a full featured in-kernel target framework with the
following feature set:
High-performance, non-blocking, multithreaded architecture with SIMD
support.
Advanced SCSI feature set:
* Persistent Reservations (PRs)
* Asymmetric Logical Unit Assignment (ALUA)
* Protocol and intra-nexus multiplexing, load-balancing and failover (MC/S)
* Full Error Recovery (ERL=0,1,2)
* Active/active task migration and session continuation (ERL=2)
* Thin LUN provisioning (UNMAP and WRITE_SAMExx)
Multiprotocol target plugins
Storage media independence:
* Virtualization of all storage media; transparent mapping of IO to LUNs
* No hard limits on number of LUNs per Target; maximum LUN size ~750 TB
* Backstores: SATA, SAS, SCSI, BluRay, DVD, FLASH, USB, ramdisk, etc.
Standards compliance:
* Full compliance with IETF (RFC 3720)
* Full implementation of SPC-4 PRs and ALUA
Significant code cleanups done by Christoph Hellwig.
[jejb: fix up for new block bdev exclusive interface. Minor fixes from
Randy Dunlap and Dan Carpenter.]
Signed-off-by: Nicholas A. Bellinger <nab@linux-iscsi.org>
Signed-off-by: James Bottomley <James.Bottomley@suse.de>
2010-12-18 03:11:26 +08:00
|
|
|
return -EINVAL;
|
|
|
|
|
2015-03-23 11:42:19 +08:00
|
|
|
mutex_lock(&nacl->lun_entry_mutex);
|
|
|
|
deve = target_nacl_find_deve(nacl, lacl->mapped_lun);
|
|
|
|
if (deve)
|
|
|
|
core_disable_device_list_for_node(lun, deve, nacl, tpg);
|
|
|
|
mutex_unlock(&nacl->lun_entry_mutex);
|
[SCSI] target: Add LIO target core v4.0.0-rc6
LIO target is a full featured in-kernel target framework with the
following feature set:
High-performance, non-blocking, multithreaded architecture with SIMD
support.
Advanced SCSI feature set:
* Persistent Reservations (PRs)
* Asymmetric Logical Unit Assignment (ALUA)
* Protocol and intra-nexus multiplexing, load-balancing and failover (MC/S)
* Full Error Recovery (ERL=0,1,2)
* Active/active task migration and session continuation (ERL=2)
* Thin LUN provisioning (UNMAP and WRITE_SAMExx)
Multiprotocol target plugins
Storage media independence:
* Virtualization of all storage media; transparent mapping of IO to LUNs
* No hard limits on number of LUNs per Target; maximum LUN size ~750 TB
* Backstores: SATA, SAS, SCSI, BluRay, DVD, FLASH, USB, ramdisk, etc.
Standards compliance:
* Full compliance with IETF (RFC 3720)
* Full implementation of SPC-4 PRs and ALUA
Significant code cleanups done by Christoph Hellwig.
[jejb: fix up for new block bdev exclusive interface. Minor fixes from
Randy Dunlap and Dan Carpenter.]
Signed-off-by: Nicholas A. Bellinger <nab@linux-iscsi.org>
Signed-off-by: James Bottomley <James.Bottomley@suse.de>
2010-12-18 03:11:26 +08:00
|
|
|
|
2015-06-10 14:41:22 +08:00
|
|
|
pr_debug("%s_TPG[%hu]_LUN[%llu] - Removed ACL for"
|
|
|
|
" InitiatorNode: %s Mapped LUN: %llu\n",
|
2011-07-19 16:55:10 +08:00
|
|
|
tpg->se_tpg_tfo->get_fabric_name(),
|
|
|
|
tpg->se_tpg_tfo->tpg_get_tag(tpg), lun->unpacked_lun,
|
2015-07-21 07:29:50 +08:00
|
|
|
nacl->initiatorname, lacl->mapped_lun);
|
[SCSI] target: Add LIO target core v4.0.0-rc6
LIO target is a full featured in-kernel target framework with the
following feature set:
High-performance, non-blocking, multithreaded architecture with SIMD
support.
Advanced SCSI feature set:
* Persistent Reservations (PRs)
* Asymmetric Logical Unit Assignment (ALUA)
* Protocol and intra-nexus multiplexing, load-balancing and failover (MC/S)
* Full Error Recovery (ERL=0,1,2)
* Active/active task migration and session continuation (ERL=2)
* Thin LUN provisioning (UNMAP and WRITE_SAMExx)
Multiprotocol target plugins
Storage media independence:
* Virtualization of all storage media; transparent mapping of IO to LUNs
* No hard limits on number of LUNs per Target; maximum LUN size ~750 TB
* Backstores: SATA, SAS, SCSI, BluRay, DVD, FLASH, USB, ramdisk, etc.
Standards compliance:
* Full compliance with IETF (RFC 3720)
* Full implementation of SPC-4 PRs and ALUA
Significant code cleanups done by Christoph Hellwig.
[jejb: fix up for new block bdev exclusive interface. Minor fixes from
Randy Dunlap and Dan Carpenter.]
Signed-off-by: Nicholas A. Bellinger <nab@linux-iscsi.org>
Signed-off-by: James Bottomley <James.Bottomley@suse.de>
2010-12-18 03:11:26 +08:00
|
|
|
|
|
|
|
return 0;
|
|
|
|
}
|
|
|
|
|
|
|
|
void core_dev_free_initiator_node_lun_acl(
|
|
|
|
struct se_portal_group *tpg,
|
|
|
|
struct se_lun_acl *lacl)
|
|
|
|
{
|
2011-06-09 01:36:43 +08:00
|
|
|
pr_debug("%s_TPG[%hu] - Freeing ACL for %s InitiatorNode: %s"
|
2015-06-10 14:41:22 +08:00
|
|
|
" Mapped LUN: %llu\n", tpg->se_tpg_tfo->get_fabric_name(),
|
2011-07-19 16:55:10 +08:00
|
|
|
tpg->se_tpg_tfo->tpg_get_tag(tpg),
|
|
|
|
tpg->se_tpg_tfo->get_fabric_name(),
|
2015-07-21 07:29:50 +08:00
|
|
|
lacl->se_lun_nacl->initiatorname, lacl->mapped_lun);
|
[SCSI] target: Add LIO target core v4.0.0-rc6
LIO target is a full featured in-kernel target framework with the
following feature set:
High-performance, non-blocking, multithreaded architecture with SIMD
support.
Advanced SCSI feature set:
* Persistent Reservations (PRs)
* Asymmetric Logical Unit Assignment (ALUA)
* Protocol and intra-nexus multiplexing, load-balancing and failover (MC/S)
* Full Error Recovery (ERL=0,1,2)
* Active/active task migration and session continuation (ERL=2)
* Thin LUN provisioning (UNMAP and WRITE_SAMExx)
Multiprotocol target plugins
Storage media independence:
* Virtualization of all storage media; transparent mapping of IO to LUNs
* No hard limits on number of LUNs per Target; maximum LUN size ~750 TB
* Backstores: SATA, SAS, SCSI, BluRay, DVD, FLASH, USB, ramdisk, etc.
Standards compliance:
* Full compliance with IETF (RFC 3720)
* Full implementation of SPC-4 PRs and ALUA
Significant code cleanups done by Christoph Hellwig.
[jejb: fix up for new block bdev exclusive interface. Minor fixes from
Randy Dunlap and Dan Carpenter.]
Signed-off-by: Nicholas A. Bellinger <nab@linux-iscsi.org>
Signed-off-by: James Bottomley <James.Bottomley@suse.de>
2010-12-18 03:11:26 +08:00
|
|
|
|
|
|
|
kfree(lacl);
|
|
|
|
}
|
|
|
|
|
2012-10-08 12:03:19 +08:00
|
|
|
static void scsi_dump_inquiry(struct se_device *dev)
|
|
|
|
{
|
|
|
|
struct t10_wwn *wwn = &dev->t10_wwn;
|
|
|
|
char buf[17];
|
|
|
|
int i, device_type;
|
|
|
|
/*
|
|
|
|
* Print Linux/SCSI style INQUIRY formatting to the kernel ring buffer
|
|
|
|
*/
|
|
|
|
for (i = 0; i < 8; i++)
|
|
|
|
if (wwn->vendor[i] >= 0x20)
|
|
|
|
buf[i] = wwn->vendor[i];
|
|
|
|
else
|
|
|
|
buf[i] = ' ';
|
|
|
|
buf[i] = '\0';
|
|
|
|
pr_debug(" Vendor: %s\n", buf);
|
|
|
|
|
|
|
|
for (i = 0; i < 16; i++)
|
|
|
|
if (wwn->model[i] >= 0x20)
|
|
|
|
buf[i] = wwn->model[i];
|
|
|
|
else
|
|
|
|
buf[i] = ' ';
|
|
|
|
buf[i] = '\0';
|
|
|
|
pr_debug(" Model: %s\n", buf);
|
|
|
|
|
|
|
|
for (i = 0; i < 4; i++)
|
|
|
|
if (wwn->revision[i] >= 0x20)
|
|
|
|
buf[i] = wwn->revision[i];
|
|
|
|
else
|
|
|
|
buf[i] = ' ';
|
|
|
|
buf[i] = '\0';
|
|
|
|
pr_debug(" Revision: %s\n", buf);
|
|
|
|
|
|
|
|
device_type = dev->transport->get_device_type(dev);
|
|
|
|
pr_debug(" Type: %s ", scsi_device_type(device_type));
|
|
|
|
}
|
|
|
|
|
|
|
|
struct se_device *target_alloc_device(struct se_hba *hba, const char *name)
|
|
|
|
{
|
|
|
|
struct se_device *dev;
|
2013-11-09 05:10:44 +08:00
|
|
|
struct se_lun *xcopy_lun;
|
2012-10-08 12:03:19 +08:00
|
|
|
|
2015-05-11 00:14:56 +08:00
|
|
|
dev = hba->backend->ops->alloc_device(hba, name);
|
2012-10-08 12:03:19 +08:00
|
|
|
if (!dev)
|
|
|
|
return NULL;
|
|
|
|
|
|
|
|
dev->se_hba = hba;
|
2015-05-11 00:14:56 +08:00
|
|
|
dev->transport = hba->backend->ops;
|
2015-06-29 18:08:19 +08:00
|
|
|
dev->prot_length = sizeof(struct t10_pi_tuple);
|
2015-05-19 15:03:07 +08:00
|
|
|
dev->hba_index = hba->hba_index;
|
2012-10-08 12:03:19 +08:00
|
|
|
|
|
|
|
INIT_LIST_HEAD(&dev->dev_sep_list);
|
|
|
|
INIT_LIST_HEAD(&dev->dev_tmr_list);
|
|
|
|
INIT_LIST_HEAD(&dev->delayed_cmd_list);
|
|
|
|
INIT_LIST_HEAD(&dev->state_list);
|
|
|
|
INIT_LIST_HEAD(&dev->qf_cmd_list);
|
|
|
|
spin_lock_init(&dev->execute_task_lock);
|
|
|
|
spin_lock_init(&dev->delayed_cmd_lock);
|
|
|
|
spin_lock_init(&dev->dev_reservation_lock);
|
|
|
|
spin_lock_init(&dev->se_port_lock);
|
|
|
|
spin_lock_init(&dev->se_tmr_lock);
|
|
|
|
spin_lock_init(&dev->qf_cmd_lock);
|
2013-08-20 06:20:28 +08:00
|
|
|
sema_init(&dev->caw_sem, 1);
|
2012-10-08 12:03:19 +08:00
|
|
|
INIT_LIST_HEAD(&dev->t10_wwn.t10_vpd_list);
|
|
|
|
spin_lock_init(&dev->t10_wwn.t10_vpd_lock);
|
|
|
|
INIT_LIST_HEAD(&dev->t10_pr.registration_list);
|
|
|
|
INIT_LIST_HEAD(&dev->t10_pr.aptpl_reg_list);
|
|
|
|
spin_lock_init(&dev->t10_pr.registration_lock);
|
|
|
|
spin_lock_init(&dev->t10_pr.aptpl_reg_lock);
|
|
|
|
INIT_LIST_HEAD(&dev->t10_alua.tg_pt_gps_list);
|
|
|
|
spin_lock_init(&dev->t10_alua.tg_pt_gps_lock);
|
2013-12-17 16:18:49 +08:00
|
|
|
INIT_LIST_HEAD(&dev->t10_alua.lba_map_list);
|
|
|
|
spin_lock_init(&dev->t10_alua.lba_map_lock);
|
2012-10-08 12:03:19 +08:00
|
|
|
|
|
|
|
dev->t10_wwn.t10_dev = dev;
|
|
|
|
dev->t10_alua.t10_dev = dev;
|
|
|
|
|
|
|
|
dev->dev_attrib.da_dev = dev;
|
2013-02-01 06:30:24 +08:00
|
|
|
dev->dev_attrib.emulate_model_alias = DA_EMULATE_MODEL_ALIAS;
|
2015-04-20 21:00:30 +08:00
|
|
|
dev->dev_attrib.emulate_dpo = 1;
|
|
|
|
dev->dev_attrib.emulate_fua_write = 1;
|
|
|
|
dev->dev_attrib.emulate_fua_read = 1;
|
2012-10-08 12:03:19 +08:00
|
|
|
dev->dev_attrib.emulate_write_cache = DA_EMULATE_WRITE_CACHE;
|
|
|
|
dev->dev_attrib.emulate_ua_intlck_ctrl = DA_EMULATE_UA_INTLLCK_CTRL;
|
|
|
|
dev->dev_attrib.emulate_tas = DA_EMULATE_TAS;
|
|
|
|
dev->dev_attrib.emulate_tpu = DA_EMULATE_TPU;
|
|
|
|
dev->dev_attrib.emulate_tpws = DA_EMULATE_TPWS;
|
2013-08-21 05:24:09 +08:00
|
|
|
dev->dev_attrib.emulate_caw = DA_EMULATE_CAW;
|
2013-08-23 05:17:20 +08:00
|
|
|
dev->dev_attrib.emulate_3pc = DA_EMULATE_3PC;
|
2018-11-07 21:11:07 +08:00
|
|
|
dev->dev_attrib.emulate_pr = DA_EMULATE_PR;
|
2014-01-09 02:19:31 +08:00
|
|
|
dev->dev_attrib.pi_prot_type = TARGET_DIF_TYPE0_PROT;
|
2012-10-08 12:03:19 +08:00
|
|
|
dev->dev_attrib.enforce_pr_isids = DA_ENFORCE_PR_ISIDS;
|
2014-10-04 09:06:08 +08:00
|
|
|
dev->dev_attrib.force_pr_aptpl = DA_FORCE_PR_APTPL;
|
2012-10-08 12:03:19 +08:00
|
|
|
dev->dev_attrib.is_nonrot = DA_IS_NONROT;
|
|
|
|
dev->dev_attrib.emulate_rest_reord = DA_EMULATE_REST_REORD;
|
|
|
|
dev->dev_attrib.max_unmap_lba_count = DA_MAX_UNMAP_LBA_COUNT;
|
|
|
|
dev->dev_attrib.max_unmap_block_desc_count =
|
|
|
|
DA_MAX_UNMAP_BLOCK_DESC_COUNT;
|
|
|
|
dev->dev_attrib.unmap_granularity = DA_UNMAP_GRANULARITY_DEFAULT;
|
|
|
|
dev->dev_attrib.unmap_granularity_alignment =
|
|
|
|
DA_UNMAP_GRANULARITY_ALIGNMENT_DEFAULT;
|
2015-11-30 06:44:57 +08:00
|
|
|
dev->dev_attrib.unmap_zeroes_data =
|
|
|
|
DA_UNMAP_ZEROES_DATA_DEFAULT;
|
2012-11-16 03:02:49 +08:00
|
|
|
dev->dev_attrib.max_write_same_len = DA_MAX_WRITE_SAME_LEN;
|
2012-10-08 12:03:19 +08:00
|
|
|
|
2013-11-09 05:10:44 +08:00
|
|
|
xcopy_lun = &dev->xcopy_lun;
|
2015-05-19 15:03:07 +08:00
|
|
|
rcu_assign_pointer(xcopy_lun->lun_se_dev, dev);
|
2013-11-09 05:10:44 +08:00
|
|
|
init_completion(&xcopy_lun->lun_ref_comp);
|
target: Fix NULL dereference during LUN lookup + active I/O shutdown
When transport_clear_lun_ref() is shutting down a se_lun via
configfs with new I/O in-flight, it's possible to trigger a
NULL pointer dereference in transport_lookup_cmd_lun() due
to the fact percpu_ref_get() doesn't do any __PERCPU_REF_DEAD
checking before incrementing lun->lun_ref.count after
lun->lun_ref has switched to atomic_t mode.
This results in a NULL pointer dereference as LUN shutdown
code in core_tpg_remove_lun() continues running after the
existing ->release() -> core_tpg_lun_ref_release() callback
completes, and clears the RCU protected se_lun->lun_se_dev
pointer.
During the OOPs, the state of lun->lun_ref in the process
which triggered the NULL pointer dereference looks like
the following on v4.1.y stable code:
struct se_lun {
lun_link_magic = 4294932337,
lun_status = TRANSPORT_LUN_STATUS_FREE,
.....
lun_se_dev = 0x0,
lun_sep = 0x0,
.....
lun_ref = {
count = {
counter = 1
},
percpu_count_ptr = 3,
release = 0xffffffffa02fa1e0 <core_tpg_lun_ref_release>,
confirm_switch = 0x0,
force_atomic = false,
rcu = {
next = 0xffff88154fa1a5d0,
func = 0xffffffff8137c4c0 <percpu_ref_switch_to_atomic_rcu>
}
}
}
To address this bug, use percpu_ref_tryget_live() to ensure
once __PERCPU_REF_DEAD is visable on all CPUs and ->lun_ref
has switched to atomic_t, all new I/Os will fail to obtain
a new lun->lun_ref reference.
Also use an explicit percpu_ref_kill_and_confirm() callback
to block on ->lun_ref_comp to allow the first stage and
associated RCU grace period to complete, and then block on
->lun_ref_shutdown waiting for the final percpu_ref_put()
to drop the last reference via transport_lun_remove_cmd()
before continuing with core_tpg_remove_lun() shutdown.
Reported-by: Rob Millner <rlm@daterainc.com>
Tested-by: Rob Millner <rlm@daterainc.com>
Cc: Rob Millner <rlm@daterainc.com>
Tested-by: Vaibhav Tandon <vst@datera.io>
Cc: Vaibhav Tandon <vst@datera.io>
Tested-by: Bryant G. Ly <bryantly@linux.vnet.ibm.com>
Cc: <stable@vger.kernel.org> # v3.14+
Signed-off-by: Nicholas Bellinger <nab@linux-iscsi.org>
2017-02-23 14:06:32 +08:00
|
|
|
init_completion(&xcopy_lun->lun_shutdown_comp);
|
2015-05-26 12:33:08 +08:00
|
|
|
INIT_LIST_HEAD(&xcopy_lun->lun_deve_list);
|
|
|
|
INIT_LIST_HEAD(&xcopy_lun->lun_dev_link);
|
|
|
|
mutex_init(&xcopy_lun->lun_tg_pt_md_mutex);
|
|
|
|
xcopy_lun->lun_tpg = &xcopy_pt_tpg;
|
2013-11-09 05:10:44 +08:00
|
|
|
|
2012-10-08 12:03:19 +08:00
|
|
|
return dev;
|
|
|
|
}
|
|
|
|
|
2016-01-19 04:09:27 +08:00
|
|
|
/*
|
|
|
|
* Check if the underlying struct block_device request_queue supports
|
|
|
|
* the QUEUE_FLAG_DISCARD bit for UNMAP/WRITE_SAME in SCSI + TRIM
|
|
|
|
* in ATA and we need to set TPE=1
|
|
|
|
*/
|
|
|
|
bool target_configure_unmap_from_queue(struct se_dev_attrib *attrib,
|
2016-06-03 09:12:37 +08:00
|
|
|
struct request_queue *q)
|
2016-01-19 04:09:27 +08:00
|
|
|
{
|
2016-06-03 09:12:37 +08:00
|
|
|
int block_size = queue_logical_block_size(q);
|
|
|
|
|
2016-01-19 04:09:27 +08:00
|
|
|
if (!blk_queue_discard(q))
|
|
|
|
return false;
|
|
|
|
|
2016-06-03 09:12:37 +08:00
|
|
|
attrib->max_unmap_lba_count =
|
|
|
|
q->limits.max_discard_sectors >> (ilog2(block_size) - 9);
|
2016-01-19 04:09:27 +08:00
|
|
|
/*
|
|
|
|
* Currently hardcoded to 1 in Linux/SCSI code..
|
|
|
|
*/
|
|
|
|
attrib->max_unmap_block_desc_count = 1;
|
|
|
|
attrib->unmap_granularity = q->limits.discard_granularity / block_size;
|
|
|
|
attrib->unmap_granularity_alignment = q->limits.discard_alignment /
|
|
|
|
block_size;
|
2017-04-12 13:21:47 +08:00
|
|
|
attrib->unmap_zeroes_data = (q->limits.max_write_zeroes_sectors);
|
2016-01-19 04:09:27 +08:00
|
|
|
return true;
|
|
|
|
}
|
|
|
|
EXPORT_SYMBOL(target_configure_unmap_from_queue);
|
|
|
|
|
|
|
|
/*
|
|
|
|
* Convert from blocksize advertised to the initiator to the 512 byte
|
|
|
|
* units unconditionally used by the Linux block layer.
|
|
|
|
*/
|
|
|
|
sector_t target_to_linux_sector(struct se_device *dev, sector_t lb)
|
|
|
|
{
|
|
|
|
switch (dev->dev_attrib.block_size) {
|
|
|
|
case 4096:
|
|
|
|
return lb << 3;
|
|
|
|
case 2048:
|
|
|
|
return lb << 2;
|
|
|
|
case 1024:
|
|
|
|
return lb << 1;
|
|
|
|
default:
|
|
|
|
return lb;
|
|
|
|
}
|
|
|
|
}
|
|
|
|
EXPORT_SYMBOL(target_to_linux_sector);
|
|
|
|
|
2017-06-23 14:18:16 +08:00
|
|
|
struct devices_idr_iter {
|
2018-06-29 02:48:57 +08:00
|
|
|
struct config_item *prev_item;
|
2017-06-23 14:18:16 +08:00
|
|
|
int (*fn)(struct se_device *dev, void *data);
|
|
|
|
void *data;
|
|
|
|
};
|
|
|
|
|
|
|
|
static int target_devices_idr_iter(int id, void *p, void *data)
|
2018-06-29 02:48:57 +08:00
|
|
|
__must_hold(&device_mutex)
|
2017-06-23 14:18:16 +08:00
|
|
|
{
|
|
|
|
struct devices_idr_iter *iter = data;
|
|
|
|
struct se_device *dev = p;
|
2018-06-29 02:48:57 +08:00
|
|
|
int ret;
|
|
|
|
|
|
|
|
config_item_put(iter->prev_item);
|
|
|
|
iter->prev_item = NULL;
|
2017-06-23 14:18:16 +08:00
|
|
|
|
|
|
|
/*
|
|
|
|
* We add the device early to the idr, so it can be used
|
|
|
|
* by backend modules during configuration. We do not want
|
|
|
|
* to allow other callers to access partially setup devices,
|
|
|
|
* so we skip them here.
|
|
|
|
*/
|
2018-07-24 03:07:45 +08:00
|
|
|
if (!target_dev_configured(dev))
|
2017-06-23 14:18:16 +08:00
|
|
|
return 0;
|
|
|
|
|
2018-06-29 02:48:57 +08:00
|
|
|
iter->prev_item = config_item_get_unless_zero(&dev->dev_group.cg_item);
|
|
|
|
if (!iter->prev_item)
|
|
|
|
return 0;
|
|
|
|
mutex_unlock(&device_mutex);
|
|
|
|
|
|
|
|
ret = iter->fn(dev, iter->data);
|
|
|
|
|
|
|
|
mutex_lock(&device_mutex);
|
|
|
|
return ret;
|
2017-06-23 14:18:16 +08:00
|
|
|
}
|
|
|
|
|
|
|
|
/**
|
|
|
|
* target_for_each_device - iterate over configured devices
|
|
|
|
* @fn: iterator function
|
|
|
|
* @data: pointer to data that will be passed to fn
|
|
|
|
*
|
|
|
|
* fn must return 0 to continue looping over devices. non-zero will break
|
|
|
|
* from the loop and return that value to the caller.
|
|
|
|
*/
|
|
|
|
int target_for_each_device(int (*fn)(struct se_device *dev, void *data),
|
|
|
|
void *data)
|
|
|
|
{
|
2018-06-29 02:48:57 +08:00
|
|
|
struct devices_idr_iter iter = { .fn = fn, .data = data };
|
2017-06-23 14:18:16 +08:00
|
|
|
int ret;
|
|
|
|
|
2017-06-23 14:18:18 +08:00
|
|
|
mutex_lock(&device_mutex);
|
2017-06-23 14:18:16 +08:00
|
|
|
ret = idr_for_each(&devices_idr, target_devices_idr_iter, &iter);
|
2017-06-23 14:18:18 +08:00
|
|
|
mutex_unlock(&device_mutex);
|
2018-06-29 02:48:57 +08:00
|
|
|
config_item_put(iter.prev_item);
|
2017-06-23 14:18:16 +08:00
|
|
|
return ret;
|
|
|
|
}
|
|
|
|
|
2012-10-08 12:03:19 +08:00
|
|
|
int target_configure_device(struct se_device *dev)
|
|
|
|
{
|
|
|
|
struct se_hba *hba = dev->se_hba;
|
2017-06-23 14:18:13 +08:00
|
|
|
int ret, id;
|
2012-10-08 12:03:19 +08:00
|
|
|
|
2018-07-24 03:07:45 +08:00
|
|
|
if (target_dev_configured(dev)) {
|
2012-10-08 12:03:19 +08:00
|
|
|
pr_err("se_dev->se_dev_ptr already set for storage"
|
|
|
|
" object\n");
|
|
|
|
return -EEXIST;
|
|
|
|
}
|
|
|
|
|
2017-06-23 14:18:13 +08:00
|
|
|
/*
|
|
|
|
* Add early so modules like tcmu can use during its
|
|
|
|
* configuration.
|
|
|
|
*/
|
2017-06-23 14:18:18 +08:00
|
|
|
mutex_lock(&device_mutex);
|
2017-06-23 14:18:13 +08:00
|
|
|
/*
|
|
|
|
* Use cyclic to try and avoid collisions with devices
|
|
|
|
* that were recently removed.
|
|
|
|
*/
|
|
|
|
id = idr_alloc_cyclic(&devices_idr, dev, 0, INT_MAX, GFP_KERNEL);
|
2017-06-23 14:18:18 +08:00
|
|
|
mutex_unlock(&device_mutex);
|
2017-06-23 14:18:13 +08:00
|
|
|
if (id < 0) {
|
|
|
|
ret = -ENOMEM;
|
|
|
|
goto out;
|
|
|
|
}
|
|
|
|
dev->dev_index = id;
|
|
|
|
|
2012-10-08 12:03:19 +08:00
|
|
|
ret = dev->transport->configure_device(dev);
|
|
|
|
if (ret)
|
2017-06-23 14:18:13 +08:00
|
|
|
goto out_free_index;
|
2012-10-08 12:03:19 +08:00
|
|
|
/*
|
|
|
|
* XXX: there is not much point to have two different values here..
|
|
|
|
*/
|
|
|
|
dev->dev_attrib.block_size = dev->dev_attrib.hw_block_size;
|
|
|
|
dev->dev_attrib.queue_depth = dev->dev_attrib.hw_queue_depth;
|
|
|
|
|
|
|
|
/*
|
|
|
|
* Align max_hw_sectors down to PAGE_SIZE I/O transfers
|
|
|
|
*/
|
|
|
|
dev->dev_attrib.hw_max_sectors =
|
|
|
|
se_dev_align_max_sectors(dev->dev_attrib.hw_max_sectors,
|
|
|
|
dev->dev_attrib.hw_block_size);
|
2015-01-07 08:10:37 +08:00
|
|
|
dev->dev_attrib.optimal_sectors = dev->dev_attrib.hw_max_sectors;
|
2012-10-08 12:03:19 +08:00
|
|
|
|
|
|
|
dev->creation_time = get_jiffies_64();
|
|
|
|
|
|
|
|
ret = core_setup_alua(dev);
|
|
|
|
if (ret)
|
2018-01-15 20:09:37 +08:00
|
|
|
goto out_destroy_device;
|
2012-10-08 12:03:19 +08:00
|
|
|
|
|
|
|
/*
|
|
|
|
* Startup the struct se_device processing thread
|
|
|
|
*/
|
|
|
|
dev->tmr_wq = alloc_workqueue("tmr-%s", WQ_MEM_RECLAIM | WQ_UNBOUND, 1,
|
|
|
|
dev->transport->name);
|
|
|
|
if (!dev->tmr_wq) {
|
|
|
|
pr_err("Unable to create tmr workqueue for %s\n",
|
|
|
|
dev->transport->name);
|
|
|
|
ret = -ENOMEM;
|
|
|
|
goto out_free_alua;
|
|
|
|
}
|
|
|
|
|
|
|
|
/*
|
|
|
|
* Setup work_queue for QUEUE_FULL
|
|
|
|
*/
|
|
|
|
INIT_WORK(&dev->qf_work_queue, target_qf_do_work);
|
|
|
|
|
|
|
|
/*
|
|
|
|
* Preload the initial INQUIRY const values if we are doing
|
|
|
|
* anything virtual (IBLOCK, FILEIO, RAMDISK), but not for TCM/pSCSI
|
|
|
|
* passthrough because this is being provided by the backend LLD.
|
|
|
|
*/
|
2015-05-20 05:44:41 +08:00
|
|
|
if (!(dev->transport->transport_flags & TRANSPORT_FLAG_PASSTHROUGH)) {
|
2012-10-08 12:03:19 +08:00
|
|
|
strncpy(&dev->t10_wwn.vendor[0], "LIO-ORG", 8);
|
|
|
|
strncpy(&dev->t10_wwn.model[0],
|
|
|
|
dev->transport->inquiry_prod, 16);
|
|
|
|
strncpy(&dev->t10_wwn.revision[0],
|
|
|
|
dev->transport->inquiry_rev, 4);
|
|
|
|
}
|
|
|
|
|
|
|
|
scsi_dump_inquiry(dev);
|
|
|
|
|
|
|
|
spin_lock(&hba->device_lock);
|
|
|
|
hba->dev_count++;
|
|
|
|
spin_unlock(&hba->device_lock);
|
2013-08-23 02:33:37 +08:00
|
|
|
|
2015-03-05 11:28:24 +08:00
|
|
|
dev->dev_flags |= DF_CONFIGURED;
|
|
|
|
|
2012-10-08 12:03:19 +08:00
|
|
|
return 0;
|
|
|
|
|
|
|
|
out_free_alua:
|
|
|
|
core_alua_free_lu_gp_mem(dev);
|
2018-01-15 20:09:37 +08:00
|
|
|
out_destroy_device:
|
|
|
|
dev->transport->destroy_device(dev);
|
2017-06-23 14:18:13 +08:00
|
|
|
out_free_index:
|
2017-06-23 14:18:18 +08:00
|
|
|
mutex_lock(&device_mutex);
|
2017-06-23 14:18:13 +08:00
|
|
|
idr_remove(&devices_idr, dev->dev_index);
|
2017-06-23 14:18:18 +08:00
|
|
|
mutex_unlock(&device_mutex);
|
2012-10-08 12:03:19 +08:00
|
|
|
out:
|
|
|
|
se_release_vpd_for_dev(dev);
|
|
|
|
return ret;
|
|
|
|
}
|
|
|
|
|
|
|
|
void target_free_device(struct se_device *dev)
|
|
|
|
{
|
|
|
|
struct se_hba *hba = dev->se_hba;
|
|
|
|
|
|
|
|
WARN_ON(!list_empty(&dev->dev_sep_list));
|
|
|
|
|
2018-07-24 03:07:45 +08:00
|
|
|
if (target_dev_configured(dev)) {
|
2012-10-08 12:03:19 +08:00
|
|
|
destroy_workqueue(dev->tmr_wq);
|
|
|
|
|
2017-06-23 14:18:12 +08:00
|
|
|
dev->transport->destroy_device(dev);
|
|
|
|
|
2017-06-23 14:18:18 +08:00
|
|
|
mutex_lock(&device_mutex);
|
2017-06-23 14:18:13 +08:00
|
|
|
idr_remove(&devices_idr, dev->dev_index);
|
2017-06-23 14:18:18 +08:00
|
|
|
mutex_unlock(&device_mutex);
|
2013-08-23 02:33:37 +08:00
|
|
|
|
2012-10-08 12:03:19 +08:00
|
|
|
spin_lock(&hba->device_lock);
|
|
|
|
hba->dev_count--;
|
|
|
|
spin_unlock(&hba->device_lock);
|
|
|
|
}
|
|
|
|
|
|
|
|
core_alua_free_lu_gp_mem(dev);
|
2013-12-17 16:18:50 +08:00
|
|
|
core_alua_set_lba_map(dev, NULL, 0, 0);
|
2012-10-08 12:03:19 +08:00
|
|
|
core_scsi3_free_all_registrations(dev);
|
|
|
|
se_release_vpd_for_dev(dev);
|
|
|
|
|
2014-01-09 02:19:31 +08:00
|
|
|
if (dev->transport->free_prot)
|
|
|
|
dev->transport->free_prot(dev);
|
|
|
|
|
2012-10-08 12:03:19 +08:00
|
|
|
dev->transport->free_device(dev);
|
|
|
|
}
|
|
|
|
|
[SCSI] target: Add LIO target core v4.0.0-rc6
LIO target is a full featured in-kernel target framework with the
following feature set:
High-performance, non-blocking, multithreaded architecture with SIMD
support.
Advanced SCSI feature set:
* Persistent Reservations (PRs)
* Asymmetric Logical Unit Assignment (ALUA)
* Protocol and intra-nexus multiplexing, load-balancing and failover (MC/S)
* Full Error Recovery (ERL=0,1,2)
* Active/active task migration and session continuation (ERL=2)
* Thin LUN provisioning (UNMAP and WRITE_SAMExx)
Multiprotocol target plugins
Storage media independence:
* Virtualization of all storage media; transparent mapping of IO to LUNs
* No hard limits on number of LUNs per Target; maximum LUN size ~750 TB
* Backstores: SATA, SAS, SCSI, BluRay, DVD, FLASH, USB, ramdisk, etc.
Standards compliance:
* Full compliance with IETF (RFC 3720)
* Full implementation of SPC-4 PRs and ALUA
Significant code cleanups done by Christoph Hellwig.
[jejb: fix up for new block bdev exclusive interface. Minor fixes from
Randy Dunlap and Dan Carpenter.]
Signed-off-by: Nicholas A. Bellinger <nab@linux-iscsi.org>
Signed-off-by: James Bottomley <James.Bottomley@suse.de>
2010-12-18 03:11:26 +08:00
|
|
|
int core_dev_setup_virtual_lun0(void)
|
|
|
|
{
|
|
|
|
struct se_hba *hba;
|
|
|
|
struct se_device *dev;
|
2013-05-29 07:55:20 +08:00
|
|
|
char buf[] = "rd_pages=8,rd_nullio=1";
|
[SCSI] target: Add LIO target core v4.0.0-rc6
LIO target is a full featured in-kernel target framework with the
following feature set:
High-performance, non-blocking, multithreaded architecture with SIMD
support.
Advanced SCSI feature set:
* Persistent Reservations (PRs)
* Asymmetric Logical Unit Assignment (ALUA)
* Protocol and intra-nexus multiplexing, load-balancing and failover (MC/S)
* Full Error Recovery (ERL=0,1,2)
* Active/active task migration and session continuation (ERL=2)
* Thin LUN provisioning (UNMAP and WRITE_SAMExx)
Multiprotocol target plugins
Storage media independence:
* Virtualization of all storage media; transparent mapping of IO to LUNs
* No hard limits on number of LUNs per Target; maximum LUN size ~750 TB
* Backstores: SATA, SAS, SCSI, BluRay, DVD, FLASH, USB, ramdisk, etc.
Standards compliance:
* Full compliance with IETF (RFC 3720)
* Full implementation of SPC-4 PRs and ALUA
Significant code cleanups done by Christoph Hellwig.
[jejb: fix up for new block bdev exclusive interface. Minor fixes from
Randy Dunlap and Dan Carpenter.]
Signed-off-by: Nicholas A. Bellinger <nab@linux-iscsi.org>
Signed-off-by: James Bottomley <James.Bottomley@suse.de>
2010-12-18 03:11:26 +08:00
|
|
|
int ret;
|
|
|
|
|
2011-06-09 01:36:43 +08:00
|
|
|
hba = core_alloc_hba("rd_mcp", 0, HBA_FLAGS_INTERNAL_USE);
|
[SCSI] target: Add LIO target core v4.0.0-rc6
LIO target is a full featured in-kernel target framework with the
following feature set:
High-performance, non-blocking, multithreaded architecture with SIMD
support.
Advanced SCSI feature set:
* Persistent Reservations (PRs)
* Asymmetric Logical Unit Assignment (ALUA)
* Protocol and intra-nexus multiplexing, load-balancing and failover (MC/S)
* Full Error Recovery (ERL=0,1,2)
* Active/active task migration and session continuation (ERL=2)
* Thin LUN provisioning (UNMAP and WRITE_SAMExx)
Multiprotocol target plugins
Storage media independence:
* Virtualization of all storage media; transparent mapping of IO to LUNs
* No hard limits on number of LUNs per Target; maximum LUN size ~750 TB
* Backstores: SATA, SAS, SCSI, BluRay, DVD, FLASH, USB, ramdisk, etc.
Standards compliance:
* Full compliance with IETF (RFC 3720)
* Full implementation of SPC-4 PRs and ALUA
Significant code cleanups done by Christoph Hellwig.
[jejb: fix up for new block bdev exclusive interface. Minor fixes from
Randy Dunlap and Dan Carpenter.]
Signed-off-by: Nicholas A. Bellinger <nab@linux-iscsi.org>
Signed-off-by: James Bottomley <James.Bottomley@suse.de>
2010-12-18 03:11:26 +08:00
|
|
|
if (IS_ERR(hba))
|
|
|
|
return PTR_ERR(hba);
|
|
|
|
|
2012-10-08 12:03:19 +08:00
|
|
|
dev = target_alloc_device(hba, "virt_lun0");
|
|
|
|
if (!dev) {
|
[SCSI] target: Add LIO target core v4.0.0-rc6
LIO target is a full featured in-kernel target framework with the
following feature set:
High-performance, non-blocking, multithreaded architecture with SIMD
support.
Advanced SCSI feature set:
* Persistent Reservations (PRs)
* Asymmetric Logical Unit Assignment (ALUA)
* Protocol and intra-nexus multiplexing, load-balancing and failover (MC/S)
* Full Error Recovery (ERL=0,1,2)
* Active/active task migration and session continuation (ERL=2)
* Thin LUN provisioning (UNMAP and WRITE_SAMExx)
Multiprotocol target plugins
Storage media independence:
* Virtualization of all storage media; transparent mapping of IO to LUNs
* No hard limits on number of LUNs per Target; maximum LUN size ~750 TB
* Backstores: SATA, SAS, SCSI, BluRay, DVD, FLASH, USB, ramdisk, etc.
Standards compliance:
* Full compliance with IETF (RFC 3720)
* Full implementation of SPC-4 PRs and ALUA
Significant code cleanups done by Christoph Hellwig.
[jejb: fix up for new block bdev exclusive interface. Minor fixes from
Randy Dunlap and Dan Carpenter.]
Signed-off-by: Nicholas A. Bellinger <nab@linux-iscsi.org>
Signed-off-by: James Bottomley <James.Bottomley@suse.de>
2010-12-18 03:11:26 +08:00
|
|
|
ret = -ENOMEM;
|
2012-10-08 12:03:19 +08:00
|
|
|
goto out_free_hba;
|
[SCSI] target: Add LIO target core v4.0.0-rc6
LIO target is a full featured in-kernel target framework with the
following feature set:
High-performance, non-blocking, multithreaded architecture with SIMD
support.
Advanced SCSI feature set:
* Persistent Reservations (PRs)
* Asymmetric Logical Unit Assignment (ALUA)
* Protocol and intra-nexus multiplexing, load-balancing and failover (MC/S)
* Full Error Recovery (ERL=0,1,2)
* Active/active task migration and session continuation (ERL=2)
* Thin LUN provisioning (UNMAP and WRITE_SAMExx)
Multiprotocol target plugins
Storage media independence:
* Virtualization of all storage media; transparent mapping of IO to LUNs
* No hard limits on number of LUNs per Target; maximum LUN size ~750 TB
* Backstores: SATA, SAS, SCSI, BluRay, DVD, FLASH, USB, ramdisk, etc.
Standards compliance:
* Full compliance with IETF (RFC 3720)
* Full implementation of SPC-4 PRs and ALUA
Significant code cleanups done by Christoph Hellwig.
[jejb: fix up for new block bdev exclusive interface. Minor fixes from
Randy Dunlap and Dan Carpenter.]
Signed-off-by: Nicholas A. Bellinger <nab@linux-iscsi.org>
Signed-off-by: James Bottomley <James.Bottomley@suse.de>
2010-12-18 03:11:26 +08:00
|
|
|
}
|
|
|
|
|
2015-05-11 00:14:56 +08:00
|
|
|
hba->backend->ops->set_configfs_dev_params(dev, buf, sizeof(buf));
|
[SCSI] target: Add LIO target core v4.0.0-rc6
LIO target is a full featured in-kernel target framework with the
following feature set:
High-performance, non-blocking, multithreaded architecture with SIMD
support.
Advanced SCSI feature set:
* Persistent Reservations (PRs)
* Asymmetric Logical Unit Assignment (ALUA)
* Protocol and intra-nexus multiplexing, load-balancing and failover (MC/S)
* Full Error Recovery (ERL=0,1,2)
* Active/active task migration and session continuation (ERL=2)
* Thin LUN provisioning (UNMAP and WRITE_SAMExx)
Multiprotocol target plugins
Storage media independence:
* Virtualization of all storage media; transparent mapping of IO to LUNs
* No hard limits on number of LUNs per Target; maximum LUN size ~750 TB
* Backstores: SATA, SAS, SCSI, BluRay, DVD, FLASH, USB, ramdisk, etc.
Standards compliance:
* Full compliance with IETF (RFC 3720)
* Full implementation of SPC-4 PRs and ALUA
Significant code cleanups done by Christoph Hellwig.
[jejb: fix up for new block bdev exclusive interface. Minor fixes from
Randy Dunlap and Dan Carpenter.]
Signed-off-by: Nicholas A. Bellinger <nab@linux-iscsi.org>
Signed-off-by: James Bottomley <James.Bottomley@suse.de>
2010-12-18 03:11:26 +08:00
|
|
|
|
2012-10-08 12:03:19 +08:00
|
|
|
ret = target_configure_device(dev);
|
|
|
|
if (ret)
|
|
|
|
goto out_free_se_dev;
|
[SCSI] target: Add LIO target core v4.0.0-rc6
LIO target is a full featured in-kernel target framework with the
following feature set:
High-performance, non-blocking, multithreaded architecture with SIMD
support.
Advanced SCSI feature set:
* Persistent Reservations (PRs)
* Asymmetric Logical Unit Assignment (ALUA)
* Protocol and intra-nexus multiplexing, load-balancing and failover (MC/S)
* Full Error Recovery (ERL=0,1,2)
* Active/active task migration and session continuation (ERL=2)
* Thin LUN provisioning (UNMAP and WRITE_SAMExx)
Multiprotocol target plugins
Storage media independence:
* Virtualization of all storage media; transparent mapping of IO to LUNs
* No hard limits on number of LUNs per Target; maximum LUN size ~750 TB
* Backstores: SATA, SAS, SCSI, BluRay, DVD, FLASH, USB, ramdisk, etc.
Standards compliance:
* Full compliance with IETF (RFC 3720)
* Full implementation of SPC-4 PRs and ALUA
Significant code cleanups done by Christoph Hellwig.
[jejb: fix up for new block bdev exclusive interface. Minor fixes from
Randy Dunlap and Dan Carpenter.]
Signed-off-by: Nicholas A. Bellinger <nab@linux-iscsi.org>
Signed-off-by: James Bottomley <James.Bottomley@suse.de>
2010-12-18 03:11:26 +08:00
|
|
|
|
2012-10-08 12:03:19 +08:00
|
|
|
lun0_hba = hba;
|
|
|
|
g_lun0_dev = dev;
|
[SCSI] target: Add LIO target core v4.0.0-rc6
LIO target is a full featured in-kernel target framework with the
following feature set:
High-performance, non-blocking, multithreaded architecture with SIMD
support.
Advanced SCSI feature set:
* Persistent Reservations (PRs)
* Asymmetric Logical Unit Assignment (ALUA)
* Protocol and intra-nexus multiplexing, load-balancing and failover (MC/S)
* Full Error Recovery (ERL=0,1,2)
* Active/active task migration and session continuation (ERL=2)
* Thin LUN provisioning (UNMAP and WRITE_SAMExx)
Multiprotocol target plugins
Storage media independence:
* Virtualization of all storage media; transparent mapping of IO to LUNs
* No hard limits on number of LUNs per Target; maximum LUN size ~750 TB
* Backstores: SATA, SAS, SCSI, BluRay, DVD, FLASH, USB, ramdisk, etc.
Standards compliance:
* Full compliance with IETF (RFC 3720)
* Full implementation of SPC-4 PRs and ALUA
Significant code cleanups done by Christoph Hellwig.
[jejb: fix up for new block bdev exclusive interface. Minor fixes from
Randy Dunlap and Dan Carpenter.]
Signed-off-by: Nicholas A. Bellinger <nab@linux-iscsi.org>
Signed-off-by: James Bottomley <James.Bottomley@suse.de>
2010-12-18 03:11:26 +08:00
|
|
|
return 0;
|
2012-10-08 12:03:19 +08:00
|
|
|
|
|
|
|
out_free_se_dev:
|
|
|
|
target_free_device(dev);
|
|
|
|
out_free_hba:
|
|
|
|
core_delete_hba(hba);
|
[SCSI] target: Add LIO target core v4.0.0-rc6
LIO target is a full featured in-kernel target framework with the
following feature set:
High-performance, non-blocking, multithreaded architecture with SIMD
support.
Advanced SCSI feature set:
* Persistent Reservations (PRs)
* Asymmetric Logical Unit Assignment (ALUA)
* Protocol and intra-nexus multiplexing, load-balancing and failover (MC/S)
* Full Error Recovery (ERL=0,1,2)
* Active/active task migration and session continuation (ERL=2)
* Thin LUN provisioning (UNMAP and WRITE_SAMExx)
Multiprotocol target plugins
Storage media independence:
* Virtualization of all storage media; transparent mapping of IO to LUNs
* No hard limits on number of LUNs per Target; maximum LUN size ~750 TB
* Backstores: SATA, SAS, SCSI, BluRay, DVD, FLASH, USB, ramdisk, etc.
Standards compliance:
* Full compliance with IETF (RFC 3720)
* Full implementation of SPC-4 PRs and ALUA
Significant code cleanups done by Christoph Hellwig.
[jejb: fix up for new block bdev exclusive interface. Minor fixes from
Randy Dunlap and Dan Carpenter.]
Signed-off-by: Nicholas A. Bellinger <nab@linux-iscsi.org>
Signed-off-by: James Bottomley <James.Bottomley@suse.de>
2010-12-18 03:11:26 +08:00
|
|
|
return ret;
|
|
|
|
}
|
|
|
|
|
|
|
|
|
|
|
|
void core_dev_release_virtual_lun0(void)
|
|
|
|
{
|
2011-07-19 16:55:10 +08:00
|
|
|
struct se_hba *hba = lun0_hba;
|
[SCSI] target: Add LIO target core v4.0.0-rc6
LIO target is a full featured in-kernel target framework with the
following feature set:
High-performance, non-blocking, multithreaded architecture with SIMD
support.
Advanced SCSI feature set:
* Persistent Reservations (PRs)
* Asymmetric Logical Unit Assignment (ALUA)
* Protocol and intra-nexus multiplexing, load-balancing and failover (MC/S)
* Full Error Recovery (ERL=0,1,2)
* Active/active task migration and session continuation (ERL=2)
* Thin LUN provisioning (UNMAP and WRITE_SAMExx)
Multiprotocol target plugins
Storage media independence:
* Virtualization of all storage media; transparent mapping of IO to LUNs
* No hard limits on number of LUNs per Target; maximum LUN size ~750 TB
* Backstores: SATA, SAS, SCSI, BluRay, DVD, FLASH, USB, ramdisk, etc.
Standards compliance:
* Full compliance with IETF (RFC 3720)
* Full implementation of SPC-4 PRs and ALUA
Significant code cleanups done by Christoph Hellwig.
[jejb: fix up for new block bdev exclusive interface. Minor fixes from
Randy Dunlap and Dan Carpenter.]
Signed-off-by: Nicholas A. Bellinger <nab@linux-iscsi.org>
Signed-off-by: James Bottomley <James.Bottomley@suse.de>
2010-12-18 03:11:26 +08:00
|
|
|
|
2011-06-09 01:36:43 +08:00
|
|
|
if (!hba)
|
[SCSI] target: Add LIO target core v4.0.0-rc6
LIO target is a full featured in-kernel target framework with the
following feature set:
High-performance, non-blocking, multithreaded architecture with SIMD
support.
Advanced SCSI feature set:
* Persistent Reservations (PRs)
* Asymmetric Logical Unit Assignment (ALUA)
* Protocol and intra-nexus multiplexing, load-balancing and failover (MC/S)
* Full Error Recovery (ERL=0,1,2)
* Active/active task migration and session continuation (ERL=2)
* Thin LUN provisioning (UNMAP and WRITE_SAMExx)
Multiprotocol target plugins
Storage media independence:
* Virtualization of all storage media; transparent mapping of IO to LUNs
* No hard limits on number of LUNs per Target; maximum LUN size ~750 TB
* Backstores: SATA, SAS, SCSI, BluRay, DVD, FLASH, USB, ramdisk, etc.
Standards compliance:
* Full compliance with IETF (RFC 3720)
* Full implementation of SPC-4 PRs and ALUA
Significant code cleanups done by Christoph Hellwig.
[jejb: fix up for new block bdev exclusive interface. Minor fixes from
Randy Dunlap and Dan Carpenter.]
Signed-off-by: Nicholas A. Bellinger <nab@linux-iscsi.org>
Signed-off-by: James Bottomley <James.Bottomley@suse.de>
2010-12-18 03:11:26 +08:00
|
|
|
return;
|
|
|
|
|
2011-07-19 16:55:10 +08:00
|
|
|
if (g_lun0_dev)
|
2012-10-08 12:03:19 +08:00
|
|
|
target_free_device(g_lun0_dev);
|
[SCSI] target: Add LIO target core v4.0.0-rc6
LIO target is a full featured in-kernel target framework with the
following feature set:
High-performance, non-blocking, multithreaded architecture with SIMD
support.
Advanced SCSI feature set:
* Persistent Reservations (PRs)
* Asymmetric Logical Unit Assignment (ALUA)
* Protocol and intra-nexus multiplexing, load-balancing and failover (MC/S)
* Full Error Recovery (ERL=0,1,2)
* Active/active task migration and session continuation (ERL=2)
* Thin LUN provisioning (UNMAP and WRITE_SAMExx)
Multiprotocol target plugins
Storage media independence:
* Virtualization of all storage media; transparent mapping of IO to LUNs
* No hard limits on number of LUNs per Target; maximum LUN size ~750 TB
* Backstores: SATA, SAS, SCSI, BluRay, DVD, FLASH, USB, ramdisk, etc.
Standards compliance:
* Full compliance with IETF (RFC 3720)
* Full implementation of SPC-4 PRs and ALUA
Significant code cleanups done by Christoph Hellwig.
[jejb: fix up for new block bdev exclusive interface. Minor fixes from
Randy Dunlap and Dan Carpenter.]
Signed-off-by: Nicholas A. Bellinger <nab@linux-iscsi.org>
Signed-off-by: James Bottomley <James.Bottomley@suse.de>
2010-12-18 03:11:26 +08:00
|
|
|
core_delete_hba(hba);
|
|
|
|
}
|
2015-05-20 05:44:40 +08:00
|
|
|
|
|
|
|
/*
|
|
|
|
* Common CDB parsing for kernel and user passthrough.
|
|
|
|
*/
|
|
|
|
sense_reason_t
|
|
|
|
passthrough_parse_cdb(struct se_cmd *cmd,
|
|
|
|
sense_reason_t (*exec_cmd)(struct se_cmd *cmd))
|
|
|
|
{
|
|
|
|
unsigned char *cdb = cmd->t_task_cdb;
|
2017-04-22 09:40:50 +08:00
|
|
|
struct se_device *dev = cmd->se_dev;
|
|
|
|
unsigned int size;
|
2015-05-20 05:44:40 +08:00
|
|
|
|
|
|
|
/*
|
|
|
|
* Clear a lun set in the cdb if the initiator talking to use spoke
|
|
|
|
* and old standards version, as we can't assume the underlying device
|
|
|
|
* won't choke up on it.
|
|
|
|
*/
|
|
|
|
switch (cdb[0]) {
|
|
|
|
case READ_10: /* SBC - RDProtect */
|
|
|
|
case READ_12: /* SBC - RDProtect */
|
|
|
|
case READ_16: /* SBC - RDProtect */
|
|
|
|
case SEND_DIAGNOSTIC: /* SPC - SELF-TEST Code */
|
|
|
|
case VERIFY: /* SBC - VRProtect */
|
|
|
|
case VERIFY_16: /* SBC - VRProtect */
|
|
|
|
case WRITE_VERIFY: /* SBC - VRProtect */
|
|
|
|
case WRITE_VERIFY_12: /* SBC - VRProtect */
|
|
|
|
case MAINTENANCE_IN: /* SPC - Parameter Data Format for SA RTPG */
|
|
|
|
break;
|
|
|
|
default:
|
|
|
|
cdb[1] &= 0x1f; /* clear logical unit number */
|
|
|
|
break;
|
|
|
|
}
|
|
|
|
|
|
|
|
/*
|
|
|
|
* For REPORT LUNS we always need to emulate the response, for everything
|
|
|
|
* else, pass it up.
|
|
|
|
*/
|
|
|
|
if (cdb[0] == REPORT_LUNS) {
|
|
|
|
cmd->execute_cmd = spc_emulate_report_luns;
|
|
|
|
return TCM_NO_SENSE;
|
|
|
|
}
|
|
|
|
|
2018-11-07 21:11:07 +08:00
|
|
|
/*
|
|
|
|
* With emulate_pr disabled, all reservation requests should fail,
|
|
|
|
* regardless of whether or not TRANSPORT_FLAG_PASSTHROUGH_PGR is set.
|
|
|
|
*/
|
|
|
|
if (!dev->dev_attrib.emulate_pr &&
|
|
|
|
((cdb[0] == PERSISTENT_RESERVE_IN) ||
|
|
|
|
(cdb[0] == PERSISTENT_RESERVE_OUT) ||
|
|
|
|
(cdb[0] == RELEASE || cdb[0] == RELEASE_10) ||
|
|
|
|
(cdb[0] == RESERVE || cdb[0] == RESERVE_10))) {
|
|
|
|
return TCM_UNSUPPORTED_SCSI_OPCODE;
|
|
|
|
}
|
|
|
|
|
2017-04-22 09:40:50 +08:00
|
|
|
/*
|
|
|
|
* For PERSISTENT RESERVE IN/OUT, RELEASE, and RESERVE we need to
|
|
|
|
* emulate the response, since tcmu does not have the information
|
|
|
|
* required to process these commands.
|
|
|
|
*/
|
|
|
|
if (!(dev->transport->transport_flags &
|
|
|
|
TRANSPORT_FLAG_PASSTHROUGH_PGR)) {
|
|
|
|
if (cdb[0] == PERSISTENT_RESERVE_IN) {
|
|
|
|
cmd->execute_cmd = target_scsi3_emulate_pr_in;
|
2017-05-24 07:48:27 +08:00
|
|
|
size = get_unaligned_be16(&cdb[7]);
|
2017-04-22 09:40:50 +08:00
|
|
|
return target_cmd_size_check(cmd, size);
|
|
|
|
}
|
|
|
|
if (cdb[0] == PERSISTENT_RESERVE_OUT) {
|
|
|
|
cmd->execute_cmd = target_scsi3_emulate_pr_out;
|
2017-07-08 11:15:44 +08:00
|
|
|
size = get_unaligned_be32(&cdb[5]);
|
2017-04-22 09:40:50 +08:00
|
|
|
return target_cmd_size_check(cmd, size);
|
|
|
|
}
|
|
|
|
|
|
|
|
if (cdb[0] == RELEASE || cdb[0] == RELEASE_10) {
|
|
|
|
cmd->execute_cmd = target_scsi2_reservation_release;
|
|
|
|
if (cdb[0] == RELEASE_10)
|
2017-05-24 07:48:27 +08:00
|
|
|
size = get_unaligned_be16(&cdb[7]);
|
2017-04-22 09:40:50 +08:00
|
|
|
else
|
|
|
|
size = cmd->data_length;
|
|
|
|
return target_cmd_size_check(cmd, size);
|
|
|
|
}
|
|
|
|
if (cdb[0] == RESERVE || cdb[0] == RESERVE_10) {
|
|
|
|
cmd->execute_cmd = target_scsi2_reservation_reserve;
|
|
|
|
if (cdb[0] == RESERVE_10)
|
2017-05-24 07:48:27 +08:00
|
|
|
size = get_unaligned_be16(&cdb[7]);
|
2017-04-22 09:40:50 +08:00
|
|
|
else
|
|
|
|
size = cmd->data_length;
|
|
|
|
return target_cmd_size_check(cmd, size);
|
|
|
|
}
|
|
|
|
}
|
|
|
|
|
2015-05-20 05:44:40 +08:00
|
|
|
/* Set DATA_CDB flag for ops that should have it */
|
|
|
|
switch (cdb[0]) {
|
|
|
|
case READ_6:
|
|
|
|
case READ_10:
|
|
|
|
case READ_12:
|
|
|
|
case READ_16:
|
|
|
|
case WRITE_6:
|
|
|
|
case WRITE_10:
|
|
|
|
case WRITE_12:
|
|
|
|
case WRITE_16:
|
|
|
|
case WRITE_VERIFY:
|
|
|
|
case WRITE_VERIFY_12:
|
2017-05-24 07:48:22 +08:00
|
|
|
case WRITE_VERIFY_16:
|
2015-05-20 05:44:40 +08:00
|
|
|
case COMPARE_AND_WRITE:
|
|
|
|
case XDWRITEREAD_10:
|
|
|
|
cmd->se_cmd_flags |= SCF_SCSI_DATA_CDB;
|
|
|
|
break;
|
|
|
|
case VARIABLE_LENGTH_CMD:
|
|
|
|
switch (get_unaligned_be16(&cdb[8])) {
|
|
|
|
case READ_32:
|
|
|
|
case WRITE_32:
|
2017-06-28 13:58:56 +08:00
|
|
|
case WRITE_VERIFY_32:
|
2015-05-20 05:44:40 +08:00
|
|
|
case XDWRITEREAD_32:
|
|
|
|
cmd->se_cmd_flags |= SCF_SCSI_DATA_CDB;
|
|
|
|
break;
|
|
|
|
}
|
|
|
|
}
|
|
|
|
|
|
|
|
cmd->execute_cmd = exec_cmd;
|
|
|
|
|
|
|
|
return TCM_NO_SENSE;
|
|
|
|
}
|
|
|
|
EXPORT_SYMBOL(passthrough_parse_cdb);
|