target: kill dev->dev_task_attr_type
We can just key off ordered tag emulation of the transport_type field.
Signed-off-by: Christoph Hellwig <hch@lst.de>
Signed-off-by: Nicholas Bellinger <nab@linux-iscsi.org>
diff --git a/drivers/target/target_core_transport.c b/drivers/target/target_core_transport.c
index c80d884..757e377 100644
--- a/drivers/target/target_core_transport.c
+++ b/drivers/target/target_core_transport.c
@@ -1068,11 +1068,13 @@
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 @@
* 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 @@
/*
* 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:
@@ -1619,10 +1620,63 @@
}
}
-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 (dev->transport->transport_type == TRANSPORT_PLUGIN_PHBA_PDEV)
+ return false;
+
+ /*
+ * Check for the existence of HEAD_OF_QUEUE, and if true return 1
+ * to allow the passed struct se_cmd list of tasks to the front of the list.
+ */
+ switch (cmd->sam_task_attr) {
+ case MSG_HEAD_TAG:
+ pr_debug("Added HEAD_OF_QUEUE for CDB: 0x%02x, "
+ "se_ordered_id: %u\n",
+ cmd->t_task_cdb[0], cmd->se_ordered_id);
+ return false;
+ case MSG_ORDERED_TAG:
+ atomic_inc(&dev->dev_ordered_sync);
+ smp_mb__after_atomic_inc();
+
+ pr_debug("Added ORDERED for CDB: 0x%02x to ordered list, "
+ " se_ordered_id: %u\n",
+ cmd->t_task_cdb[0], cmd->se_ordered_id);
+
+ /*
+ * Execute an ORDERED command if no other older commands
+ * exist that need to be completed first.
+ */
+ if (!atomic_read(&dev->simple_cmds))
+ return false;
+ break;
+ default:
+ /*
+ * For SIMPLE and UNTAGGED Task Attribute commands
+ */
+ atomic_inc(&dev->simple_cmds);
+ smp_mb__after_atomic_inc();
+ break;
+ }
+
+ if (atomic_read(&dev->dev_ordered_sync) == 0)
+ return false;
+
+ 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.
*/
@@ -1660,60 +1714,8 @@
cmd->t_state = TRANSPORT_PROCESSING;
spin_unlock_irq(&cmd->t_state_lock);
- if (dev->dev_task_attr_type != SAM_TASK_ATTR_EMULATED)
- goto execute;
-
- /*
- * Check for the existence of HEAD_OF_QUEUE, and if true return 1
- * to allow the passed struct se_cmd list of tasks to the front of the list.
- */
- switch (cmd->sam_task_attr) {
- case MSG_HEAD_TAG:
- 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;
- case MSG_ORDERED_TAG:
- atomic_inc(&dev->dev_ordered_sync);
- smp_mb__after_atomic_inc();
-
- pr_debug("Added ORDERED for CDB: 0x%02x to ordered list, "
- " se_ordered_id: %u\n",
- cmd->t_task_cdb[0], cmd->se_ordered_id);
-
- /*
- * Execute an ORDERED command if no other older commands
- * exist that need to be completed first.
- */
- if (!atomic_read(&dev->simple_cmds))
- goto execute;
- break;
- default:
- /*
- * For SIMPLE and UNTAGGED Task Attribute commands
- */
- atomic_inc(&dev->simple_cmds);
- smp_mb__after_atomic_inc();
- 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);
-
- 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;
- }
-
-execute:
- /*
- * Otherwise, no ORDERED task attributes exist..
- */
- __target_execute_cmd(cmd);
+ if (!target_handle_task_attr(cmd))
+ __target_execute_cmd(cmd);
}
EXPORT_SYMBOL(target_execute_cmd);
@@ -1752,6 +1754,9 @@
{
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 @@
{
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 @@
* 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()