aboutsummaryrefslogtreecommitdiff
path: root/drivers/target/target_core_ua.c
diff options
context:
space:
mode:
Diffstat (limited to 'drivers/target/target_core_ua.c')
-rw-r--r--drivers/target/target_core_ua.c102
1 files changed, 47 insertions, 55 deletions
diff --git a/drivers/target/target_core_ua.c b/drivers/target/target_core_ua.c
index a2ef346087e..101858e245b 100644
--- a/drivers/target/target_core_ua.c
+++ b/drivers/target/target_core_ua.c
@@ -3,8 +3,7 @@
*
* This file contains logic for SPC-3 Unit Attention emulation
*
- * Copyright (c) 2009,2010 Rising Tide Systems
- * Copyright (c) 2009,2010 Linux-iSCSI.org
+ * (c) Copyright 2009-2013 Datera, Inc.
*
* Nicholas A. Bellinger <nab@kernel.org>
*
@@ -24,40 +23,36 @@
*
******************************************************************************/
-#include <linux/version.h>
#include <linux/slab.h>
#include <linux/spinlock.h>
#include <scsi/scsi.h>
#include <scsi/scsi_cmnd.h>
#include <target/target_core_base.h>
-#include <target/target_core_device.h>
-#include <target/target_core_transport.h>
-#include <target/target_core_fabric_ops.h>
+#include <target/target_core_fabric.h>
#include <target/target_core_configfs.h>
+#include "target_core_internal.h"
#include "target_core_alua.h"
-#include "target_core_hba.h"
#include "target_core_pr.h"
#include "target_core_ua.h"
-int core_scsi3_ua_check(
- struct se_cmd *cmd,
- unsigned char *cdb)
+sense_reason_t
+target_scsi3_ua_check(struct se_cmd *cmd)
{
struct se_dev_entry *deve;
struct se_session *sess = cmd->se_sess;
struct se_node_acl *nacl;
- if (!(sess))
+ if (!sess)
return 0;
nacl = sess->se_node_acl;
- if (!(nacl))
+ if (!nacl)
return 0;
- deve = &nacl->device_list[cmd->orig_fe_lun];
- if (!(atomic_read(&deve->ua_count)))
+ deve = nacl->device_list[cmd->orig_fe_lun];
+ if (!atomic_read(&deve->ua_count))
return 0;
/*
* From sam4r14, section 5.14 Unit attention condition:
@@ -74,16 +69,14 @@ int core_scsi3_ua_check(
* was received, then the device server shall process the command
* and either:
*/
- switch (cdb[0]) {
+ switch (cmd->t_task_cdb[0]) {
case INQUIRY:
case REPORT_LUNS:
case REQUEST_SENSE:
return 0;
default:
- return -1;
+ return TCM_CHECK_CONDITION_UNIT_ATTENTION;
}
-
- return -1;
}
int core_scsi3_ua_allocate(
@@ -97,15 +90,14 @@ int core_scsi3_ua_allocate(
/*
* PASSTHROUGH OPS
*/
- if (!(nacl))
- return -1;
+ if (!nacl)
+ return -EINVAL;
ua = kmem_cache_zalloc(se_ua_cache, GFP_ATOMIC);
- if (!(ua)) {
- printk(KERN_ERR "Unable to allocate struct se_ua\n");
- return -1;
+ if (!ua) {
+ pr_err("Unable to allocate struct se_ua\n");
+ return -ENOMEM;
}
- INIT_LIST_HEAD(&ua->ua_dev_list);
INIT_LIST_HEAD(&ua->ua_nacl_list);
ua->ua_nacl = nacl;
@@ -113,7 +105,7 @@ int core_scsi3_ua_allocate(
ua->ua_ascq = ascq;
spin_lock_irq(&nacl->device_list_lock);
- deve = &nacl->device_list[unpacked_lun];
+ deve = nacl->device_list[unpacked_lun];
spin_lock(&deve->ua_lock);
list_for_each_entry_safe(ua_p, ua_tmp, &deve->ua_list, ua_nacl_list) {
@@ -170,20 +162,20 @@ int core_scsi3_ua_allocate(
spin_unlock_irq(&nacl->device_list_lock);
atomic_inc(&deve->ua_count);
- smp_mb__after_atomic_inc();
+ smp_mb__after_atomic();
return 0;
}
list_add_tail(&ua->ua_nacl_list, &deve->ua_list);
spin_unlock(&deve->ua_lock);
spin_unlock_irq(&nacl->device_list_lock);
- printk(KERN_INFO "[%s]: Allocated UNIT ATTENTION, mapped LUN: %u, ASC:"
+ pr_debug("[%s]: Allocated UNIT ATTENTION, mapped LUN: %u, ASC:"
" 0x%02x, ASCQ: 0x%02x\n",
- TPG_TFO(nacl->se_tpg)->get_fabric_name(), unpacked_lun,
+ nacl->se_tpg->se_tpg_tfo->get_fabric_name(), unpacked_lun,
asc, ascq);
atomic_inc(&deve->ua_count);
- smp_mb__after_atomic_inc();
+ smp_mb__after_atomic();
return 0;
}
@@ -198,7 +190,7 @@ void core_scsi3_ua_release_all(
kmem_cache_free(se_ua_cache, ua);
atomic_dec(&deve->ua_count);
- smp_mb__after_atomic_dec();
+ smp_mb__after_atomic();
}
spin_unlock(&deve->ua_lock);
}
@@ -208,23 +200,23 @@ void core_scsi3_ua_for_check_condition(
u8 *asc,
u8 *ascq)
{
- struct se_device *dev = SE_DEV(cmd);
+ struct se_device *dev = cmd->se_dev;
struct se_dev_entry *deve;
struct se_session *sess = cmd->se_sess;
struct se_node_acl *nacl;
struct se_ua *ua = NULL, *ua_p;
int head = 1;
- if (!(sess))
+ if (!sess)
return;
nacl = sess->se_node_acl;
- if (!(nacl))
+ if (!nacl)
return;
spin_lock_irq(&nacl->device_list_lock);
- deve = &nacl->device_list[cmd->orig_fe_lun];
- if (!(atomic_read(&deve->ua_count))) {
+ deve = nacl->device_list[cmd->orig_fe_lun];
+ if (!atomic_read(&deve->ua_count)) {
spin_unlock_irq(&nacl->device_list_lock);
return;
}
@@ -240,14 +232,14 @@ void core_scsi3_ua_for_check_condition(
* highest priority UNIT_ATTENTION and ASC/ASCQ without
* clearing it.
*/
- if (DEV_ATTRIB(dev)->emulate_ua_intlck_ctrl != 0) {
+ if (dev->dev_attrib.emulate_ua_intlck_ctrl != 0) {
*asc = ua->ua_asc;
*ascq = ua->ua_ascq;
break;
}
/*
* Otherwise for the default 00b, release the UNIT ATTENTION
- * condition. Return the ASC/ASCQ of the higest priority UA
+ * condition. Return the ASC/ASCQ of the highest priority UA
* (head of the list) in the outgoing CHECK_CONDITION + sense.
*/
if (head) {
@@ -259,18 +251,18 @@ void core_scsi3_ua_for_check_condition(
kmem_cache_free(se_ua_cache, ua);
atomic_dec(&deve->ua_count);
- smp_mb__after_atomic_dec();
+ smp_mb__after_atomic();
}
spin_unlock(&deve->ua_lock);
spin_unlock_irq(&nacl->device_list_lock);
- printk(KERN_INFO "[%s]: %s UNIT ATTENTION condition with"
+ pr_debug("[%s]: %s UNIT ATTENTION condition with"
" INTLCK_CTRL: %d, mapped LUN: %u, got CDB: 0x%02x"
" reported ASC: 0x%02x, ASCQ: 0x%02x\n",
- TPG_TFO(nacl->se_tpg)->get_fabric_name(),
- (DEV_ATTRIB(dev)->emulate_ua_intlck_ctrl != 0) ? "Reporting" :
- "Releasing", DEV_ATTRIB(dev)->emulate_ua_intlck_ctrl,
- cmd->orig_fe_lun, T_TASK(cmd)->t_task_cdb[0], *asc, *ascq);
+ nacl->se_tpg->se_tpg_tfo->get_fabric_name(),
+ (dev->dev_attrib.emulate_ua_intlck_ctrl != 0) ? "Reporting" :
+ "Releasing", dev->dev_attrib.emulate_ua_intlck_ctrl,
+ cmd->orig_fe_lun, cmd->t_task_cdb[0], *asc, *ascq);
}
int core_scsi3_ua_clear_for_request_sense(
@@ -284,18 +276,18 @@ int core_scsi3_ua_clear_for_request_sense(
struct se_ua *ua = NULL, *ua_p;
int head = 1;
- if (!(sess))
- return -1;
+ if (!sess)
+ return -EINVAL;
nacl = sess->se_node_acl;
- if (!(nacl))
- return -1;
+ if (!nacl)
+ return -EINVAL;
spin_lock_irq(&nacl->device_list_lock);
- deve = &nacl->device_list[cmd->orig_fe_lun];
- if (!(atomic_read(&deve->ua_count))) {
+ deve = nacl->device_list[cmd->orig_fe_lun];
+ if (!atomic_read(&deve->ua_count)) {
spin_unlock_irq(&nacl->device_list_lock);
- return -1;
+ return -EPERM;
}
/*
* The highest priority Unit Attentions are placed at the head of the
@@ -304,7 +296,7 @@ int core_scsi3_ua_clear_for_request_sense(
* matching struct se_lun.
*
* Once the returning ASC/ASCQ values are set, we go ahead and
- * release all of the Unit Attention conditions for the assoicated
+ * release all of the Unit Attention conditions for the associated
* struct se_lun.
*/
spin_lock(&deve->ua_lock);
@@ -318,15 +310,15 @@ int core_scsi3_ua_clear_for_request_sense(
kmem_cache_free(se_ua_cache, ua);
atomic_dec(&deve->ua_count);
- smp_mb__after_atomic_dec();
+ smp_mb__after_atomic();
}
spin_unlock(&deve->ua_lock);
spin_unlock_irq(&nacl->device_list_lock);
- printk(KERN_INFO "[%s]: Released UNIT ATTENTION condition, mapped"
+ pr_debug("[%s]: Released UNIT ATTENTION condition, mapped"
" LUN: %u, got REQUEST_SENSE reported ASC: 0x%02x,"
- " ASCQ: 0x%02x\n", TPG_TFO(nacl->se_tpg)->get_fabric_name(),
+ " ASCQ: 0x%02x\n", nacl->se_tpg->se_tpg_tfo->get_fabric_name(),
cmd->orig_fe_lun, *asc, *ascq);
- return (head) ? -1 : 0;
+ return (head) ? -EPERM : 0;
}
generated by cgit v1.2.3-70-g09d2 (git 2.46.0) at 2025-11-09 18:37:19 +0000