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-rw-r--r--drivers/target/target_core_device.c5
-rw-r--r--drivers/target/target_core_spc.c6
-rw-r--r--drivers/target/target_core_transport.c130
3 files changed, 69 insertions, 72 deletions
diff --git a/drivers/target/target_core_device.c b/drivers/target/target_core_device.c
index e45a70970548..6a27e7fd33fb 100644
--- a/drivers/target/target_core_device.c
+++ b/drivers/target/target_core_device.c
@@ -1412,11 +1412,6 @@ struct se_device *target_alloc_device(struct se_hba *hba, const char *name)
dev->dev_attrib.fabric_max_sectors = DA_FABRIC_MAX_SECTORS;
dev->dev_attrib.optimal_sectors = DA_FABRIC_MAX_SECTORS;
- if (dev->transport->transport_type == TRANSPORT_PLUGIN_PHBA_PDEV)
- dev->dev_task_attr_type = SAM_TASK_ATTR_PASSTHROUGH;
- else
- dev->dev_task_attr_type = SAM_TASK_ATTR_EMULATED;
-
return dev;
}
diff --git a/drivers/target/target_core_spc.c b/drivers/target/target_core_spc.c
index 1f1ddb8183c7..8ca62631ec7f 100644
--- a/drivers/target/target_core_spc.c
+++ b/drivers/target/target_core_spc.c
@@ -1054,8 +1054,7 @@ int spc_parse_cdb(struct se_cmd *cmd, unsigned int *size)
* Do implict HEAD_OF_QUEUE processing for INQUIRY.
* See spc4r17 section 5.3
*/
- if (cmd->se_dev->dev_task_attr_type == SAM_TASK_ATTR_EMULATED)
- cmd->sam_task_attr = MSG_HEAD_TAG;
+ cmd->sam_task_attr = MSG_HEAD_TAG;
cmd->execute_cmd = spc_emulate_inquiry;
break;
case SECURITY_PROTOCOL_IN:
@@ -1083,8 +1082,7 @@ int spc_parse_cdb(struct se_cmd *cmd, unsigned int *size)
* Do implict HEAD_OF_QUEUE processing for REPORT_LUNS
* See spc4r17 section 5.3
*/
- if (cmd->se_dev->dev_task_attr_type == SAM_TASK_ATTR_EMULATED)
- cmd->sam_task_attr = MSG_HEAD_TAG;
+ cmd->sam_task_attr = MSG_HEAD_TAG;
break;
case TEST_UNIT_READY:
cmd->execute_cmd = spc_emulate_testunitready;
diff --git a/drivers/target/target_core_transport.c b/drivers/target/target_core_transport.c
index c80d88435f90..757e3777ce79 100644
--- a/drivers/target/target_core_transport.c
+++ b/drivers/target/target_core_transport.c
@@ -1068,11 +1068,13 @@ EXPORT_SYMBOL(transport_init_se_cmd);
static int transport_check_alloc_task_attr(struct se_cmd *cmd)
{
+ struct se_device *dev = cmd->se_dev;
+
/*
* Check if SAM Task Attribute emulation is enabled for this
* struct se_device storage object
*/
- if (cmd->se_dev->dev_task_attr_type != SAM_TASK_ATTR_EMULATED)
+ if (dev->transport->transport_type == TRANSPORT_PLUGIN_PHBA_PDEV)
return 0;
if (cmd->sam_task_attr == MSG_ACA_TAG) {
@@ -1084,11 +1086,11 @@ static int transport_check_alloc_task_attr(struct se_cmd *cmd)
* Used to determine when ORDERED commands should go from
* Dormant to Active status.
*/
- cmd->se_ordered_id = atomic_inc_return(&cmd->se_dev->dev_ordered_id);
+ cmd->se_ordered_id = atomic_inc_return(&dev->dev_ordered_id);
smp_mb__after_atomic_inc();
pr_debug("Allocated se_ordered_id: %u for Task Attr: 0x%02x on %s\n",
cmd->se_ordered_id, cmd->sam_task_attr,
- cmd->se_dev->transport->name);
+ dev->transport->name);
return 0;
}
@@ -1534,8 +1536,7 @@ void transport_generic_request_failure(struct se_cmd *cmd)
/*
* For SAM Task Attribute emulation for failed struct se_cmd
*/
- if (cmd->se_dev->dev_task_attr_type == SAM_TASK_ATTR_EMULATED)
- transport_complete_task_attr(cmd);
+ transport_complete_task_attr(cmd);
switch (cmd->scsi_sense_reason) {
case TCM_NON_EXISTENT_LUN:
@@ -1619,49 +1620,12 @@ static void __target_execute_cmd(struct se_cmd *cmd)
}
}
-void target_execute_cmd(struct se_cmd *cmd)
+static bool target_handle_task_attr(struct se_cmd *cmd)
{
struct se_device *dev = cmd->se_dev;
- /*
- * If the received CDB has aleady been aborted stop processing it here.
- */
- if (transport_check_aborted_status(cmd, 1))
- return;
-
- /*
- * Determine if IOCTL context caller in requesting the stopping of this
- * command for LUN shutdown purposes.
- */
- spin_lock_irq(&cmd->t_state_lock);
- if (cmd->transport_state & CMD_T_LUN_STOP) {
- pr_debug("%s:%d CMD_T_LUN_STOP for ITT: 0x%08x\n",
- __func__, __LINE__, cmd->se_tfo->get_task_tag(cmd));
-
- cmd->transport_state &= ~CMD_T_ACTIVE;
- spin_unlock_irq(&cmd->t_state_lock);
- complete(&cmd->transport_lun_stop_comp);
- return;
- }
- /*
- * Determine if frontend context caller is requesting the stopping of
- * this command for frontend exceptions.
- */
- if (cmd->transport_state & CMD_T_STOP) {
- pr_debug("%s:%d CMD_T_STOP for ITT: 0x%08x\n",
- __func__, __LINE__,
- cmd->se_tfo->get_task_tag(cmd));
-
- spin_unlock_irq(&cmd->t_state_lock);
- complete(&cmd->t_transport_stop_comp);
- return;
- }
-
- cmd->t_state = TRANSPORT_PROCESSING;
- spin_unlock_irq(&cmd->t_state_lock);
-
- if (dev->dev_task_attr_type != SAM_TASK_ATTR_EMULATED)
- goto execute;
+ if (dev->transport->transport_type == TRANSPORT_PLUGIN_PHBA_PDEV)
+ return false;
/*
* Check for the existence of HEAD_OF_QUEUE, and if true return 1
@@ -1672,7 +1636,7 @@ void target_execute_cmd(struct se_cmd *cmd)
pr_debug("Added HEAD_OF_QUEUE for CDB: 0x%02x, "
"se_ordered_id: %u\n",
cmd->t_task_cdb[0], cmd->se_ordered_id);
- goto execute;
+ return false;
case MSG_ORDERED_TAG:
atomic_inc(&dev->dev_ordered_sync);
smp_mb__after_atomic_inc();
@@ -1686,7 +1650,7 @@ void target_execute_cmd(struct se_cmd *cmd)
* exist that need to be completed first.
*/
if (!atomic_read(&dev->simple_cmds))
- goto execute;
+ return false;
break;
default:
/*
@@ -1697,23 +1661,61 @@ void target_execute_cmd(struct se_cmd *cmd)
break;
}
- if (atomic_read(&dev->dev_ordered_sync) != 0) {
- spin_lock(&dev->delayed_cmd_lock);
- list_add_tail(&cmd->se_delayed_node, &dev->delayed_cmd_list);
- spin_unlock(&dev->delayed_cmd_lock);
+ if (atomic_read(&dev->dev_ordered_sync) == 0)
+ return false;
- pr_debug("Added CDB: 0x%02x Task Attr: 0x%02x to"
- " delayed CMD list, se_ordered_id: %u\n",
- cmd->t_task_cdb[0], cmd->sam_task_attr,
- cmd->se_ordered_id);
+ spin_lock(&dev->delayed_cmd_lock);
+ list_add_tail(&cmd->se_delayed_node, &dev->delayed_cmd_list);
+ spin_unlock(&dev->delayed_cmd_lock);
+
+ pr_debug("Added CDB: 0x%02x Task Attr: 0x%02x to"
+ " delayed CMD list, se_ordered_id: %u\n",
+ cmd->t_task_cdb[0], cmd->sam_task_attr,
+ cmd->se_ordered_id);
+ return true;
+}
+
+void target_execute_cmd(struct se_cmd *cmd)
+{
+ /*
+ * If the received CDB has aleady been aborted stop processing it here.
+ */
+ if (transport_check_aborted_status(cmd, 1))
return;
- }
-execute:
/*
- * Otherwise, no ORDERED task attributes exist..
+ * Determine if IOCTL context caller in requesting the stopping of this
+ * command for LUN shutdown purposes.
*/
- __target_execute_cmd(cmd);
+ spin_lock_irq(&cmd->t_state_lock);
+ if (cmd->transport_state & CMD_T_LUN_STOP) {
+ pr_debug("%s:%d CMD_T_LUN_STOP for ITT: 0x%08x\n",
+ __func__, __LINE__, cmd->se_tfo->get_task_tag(cmd));
+
+ cmd->transport_state &= ~CMD_T_ACTIVE;
+ spin_unlock_irq(&cmd->t_state_lock);
+ complete(&cmd->transport_lun_stop_comp);
+ return;
+ }
+ /*
+ * Determine if frontend context caller is requesting the stopping of
+ * this command for frontend exceptions.
+ */
+ if (cmd->transport_state & CMD_T_STOP) {
+ pr_debug("%s:%d CMD_T_STOP for ITT: 0x%08x\n",
+ __func__, __LINE__,
+ cmd->se_tfo->get_task_tag(cmd));
+
+ spin_unlock_irq(&cmd->t_state_lock);
+ complete(&cmd->t_transport_stop_comp);
+ return;
+ }
+
+ cmd->t_state = TRANSPORT_PROCESSING;
+ spin_unlock_irq(&cmd->t_state_lock);
+
+ if (!target_handle_task_attr(cmd))
+ __target_execute_cmd(cmd);
}
EXPORT_SYMBOL(target_execute_cmd);
@@ -1752,6 +1754,9 @@ static void transport_complete_task_attr(struct se_cmd *cmd)
{
struct se_device *dev = cmd->se_dev;
+ if (dev->transport->transport_type == TRANSPORT_PLUGIN_PHBA_PDEV)
+ return;
+
if (cmd->sam_task_attr == MSG_SIMPLE_TAG) {
atomic_dec(&dev->simple_cmds);
smp_mb__after_atomic_dec();
@@ -1780,8 +1785,7 @@ static void transport_complete_qf(struct se_cmd *cmd)
{
int ret = 0;
- if (cmd->se_dev->dev_task_attr_type == SAM_TASK_ATTR_EMULATED)
- transport_complete_task_attr(cmd);
+ transport_complete_task_attr(cmd);
if (cmd->se_cmd_flags & SCF_TRANSPORT_TASK_SENSE) {
ret = cmd->se_tfo->queue_status(cmd);
@@ -1839,8 +1843,8 @@ static void target_complete_ok_work(struct work_struct *work)
* delayed execution list after a HEAD_OF_QUEUE or ORDERED Task
* Attribute.
*/
- if (cmd->se_dev->dev_task_attr_type == SAM_TASK_ATTR_EMULATED)
- transport_complete_task_attr(cmd);
+ transport_complete_task_attr(cmd);
+
/*
* Check to schedule QUEUE_FULL work, or execute an existing
* cmd->transport_qf_callback()
generated by cgit v1.2.3-55-g7522 (git 2.39.0) at 2024-11-14 07:48:53 +0100