target: More core cleanups from AGrover (round 2)
This patch contains the squashed version of second round of target core
cleanups and simplifications and Andy and Co. It also contains a handful
of fixes to address bugs the original series and other minor cleanups.
Here is the condensed shortlog:
target: Remove unneeded casts to void*
target: Rename get_lun_for_{cmd,tmr} to lookup_{cmd,tmr}_lun
target: Make t_task a member of se_cmd, not a pointer
target: Handle functions returning "-2"
target: Use cmd->se_dev over cmd->se_lun->lun_se_dev
target: Embed qr in struct se_cmd
target: Replace embedded struct se_queue_req with a list_head
target: Rename list_heads that are nodes in struct se_cmd to "*_node"
target: Fold transport_device_setup_cmd() into lookup_{tmr,cmd}_lun()
target: Make t_mem_list and t_mem_list_bidi members of t_task
target: Add comment & cleanup transport_map_sg_to_mem()
target: Remove unneeded checks in transport_free_pages()
(Roland: Fix se_queue_req removal leftovers OOPs)
(nab: Fix transport_lookup_tmr_lun failure case)
(nab: Fix list_empty(&cmd->t_task.t_mem_bidi_list) inversion bugs)
Signed-off-by: Andy Grover <agrover@redhat.com>
Signed-off-by: Roland Dreier <roland@purestorage.com>
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 6f5d4df..d0cd601 100644
--- a/drivers/target/target_core_transport.c
+++ b/drivers/target/target_core_transport.c
@@ -201,7 +201,7 @@
typedef int (*map_func_t)(struct se_task *, u32);
static int transport_generic_write_pending(struct se_cmd *);
-static int transport_processing_thread(void *);
+static int transport_processing_thread(void *param);
static int __transport_execute_tasks(struct se_device *dev);
static void transport_complete_task_attr(struct se_cmd *cmd);
static void transport_direct_request_timeout(struct se_cmd *cmd);
@@ -215,9 +215,8 @@
static int transport_generic_remove(struct se_cmd *cmd,
int release_to_pool, int session_reinstatement);
static int transport_get_sectors(struct se_cmd *cmd);
-static struct list_head *transport_init_se_mem_list(void);
static int transport_map_sg_to_mem(struct se_cmd *cmd,
- struct list_head *se_mem_list, void *in_mem,
+ struct list_head *se_mem_list, struct scatterlist *sgl,
u32 *se_mem_cnt);
static void transport_memcpy_se_mem_read_contig(struct se_cmd *cmd,
unsigned char *dst, struct list_head *se_mem_list);
@@ -574,7 +573,7 @@
EXPORT_SYMBOL(transport_deregister_session);
/*
- * Called with cmd->t_task->t_state_lock held.
+ * Called with cmd->t_task.t_state_lock held.
*/
static void transport_all_task_dev_remove_state(struct se_cmd *cmd)
{
@@ -582,10 +581,7 @@
struct se_task *task;
unsigned long flags;
- if (!cmd->t_task)
- return;
-
- list_for_each_entry(task, &cmd->t_task->t_task_list, t_list) {
+ list_for_each_entry(task, &cmd->t_task.t_task_list, t_list) {
dev = task->se_dev;
if (!(dev))
continue;
@@ -603,7 +599,7 @@
spin_unlock_irqrestore(&dev->execute_task_lock, flags);
atomic_set(&task->task_state_active, 0);
- atomic_dec(&cmd->t_task->t_task_cdbs_ex_left);
+ atomic_dec(&cmd->t_task.t_task_cdbs_ex_left);
}
}
@@ -622,32 +618,32 @@
{
unsigned long flags;
- spin_lock_irqsave(&cmd->t_task->t_state_lock, flags);
+ spin_lock_irqsave(&cmd->t_task.t_state_lock, flags);
/*
* Determine if IOCTL context caller in requesting the stopping of this
* command for LUN shutdown purposes.
*/
- if (atomic_read(&cmd->t_task->transport_lun_stop)) {
- DEBUG_CS("%s:%d atomic_read(&cmd->t_task->transport_lun_stop)"
+ if (atomic_read(&cmd->t_task.transport_lun_stop)) {
+ DEBUG_CS("%s:%d atomic_read(&cmd->t_task.transport_lun_stop)"
" == TRUE for ITT: 0x%08x\n", __func__, __LINE__,
cmd->se_tfo->get_task_tag(cmd));
cmd->deferred_t_state = cmd->t_state;
cmd->t_state = TRANSPORT_DEFERRED_CMD;
- atomic_set(&cmd->t_task->t_transport_active, 0);
+ atomic_set(&cmd->t_task.t_transport_active, 0);
if (transport_off == 2)
transport_all_task_dev_remove_state(cmd);
- spin_unlock_irqrestore(&cmd->t_task->t_state_lock, flags);
+ spin_unlock_irqrestore(&cmd->t_task.t_state_lock, flags);
- complete(&cmd->t_task->transport_lun_stop_comp);
+ complete(&cmd->t_task.transport_lun_stop_comp);
return 1;
}
/*
* Determine if frontend context caller is requesting the stopping of
* this command for frontend exceptions.
*/
- if (atomic_read(&cmd->t_task->t_transport_stop)) {
- DEBUG_CS("%s:%d atomic_read(&cmd->t_task->t_transport_stop) =="
+ if (atomic_read(&cmd->t_task.t_transport_stop)) {
+ DEBUG_CS("%s:%d atomic_read(&cmd->t_task.t_transport_stop) =="
" TRUE for ITT: 0x%08x\n", __func__, __LINE__,
cmd->se_tfo->get_task_tag(cmd));
@@ -662,13 +658,13 @@
*/
if (transport_off == 2)
cmd->se_lun = NULL;
- spin_unlock_irqrestore(&cmd->t_task->t_state_lock, flags);
+ spin_unlock_irqrestore(&cmd->t_task.t_state_lock, flags);
- complete(&cmd->t_task->t_transport_stop_comp);
+ complete(&cmd->t_task.t_transport_stop_comp);
return 1;
}
if (transport_off) {
- atomic_set(&cmd->t_task->t_transport_active, 0);
+ atomic_set(&cmd->t_task.t_transport_active, 0);
if (transport_off == 2) {
transport_all_task_dev_remove_state(cmd);
/*
@@ -683,18 +679,18 @@
*/
if (cmd->se_tfo->check_stop_free != NULL) {
spin_unlock_irqrestore(
- &cmd->t_task->t_state_lock, flags);
+ &cmd->t_task.t_state_lock, flags);
cmd->se_tfo->check_stop_free(cmd);
return 1;
}
}
- spin_unlock_irqrestore(&cmd->t_task->t_state_lock, flags);
+ spin_unlock_irqrestore(&cmd->t_task.t_state_lock, flags);
return 0;
} else if (t_state)
cmd->t_state = t_state;
- spin_unlock_irqrestore(&cmd->t_task->t_state_lock, flags);
+ spin_unlock_irqrestore(&cmd->t_task.t_state_lock, flags);
return 0;
}
@@ -712,21 +708,21 @@
if (!lun)
return;
- spin_lock_irqsave(&cmd->t_task->t_state_lock, flags);
- if (!(atomic_read(&cmd->t_task->transport_dev_active))) {
- spin_unlock_irqrestore(&cmd->t_task->t_state_lock, flags);
+ spin_lock_irqsave(&cmd->t_task.t_state_lock, flags);
+ if (!(atomic_read(&cmd->t_task.transport_dev_active))) {
+ spin_unlock_irqrestore(&cmd->t_task.t_state_lock, flags);
goto check_lun;
}
- atomic_set(&cmd->t_task->transport_dev_active, 0);
+ atomic_set(&cmd->t_task.transport_dev_active, 0);
transport_all_task_dev_remove_state(cmd);
- spin_unlock_irqrestore(&cmd->t_task->t_state_lock, flags);
+ spin_unlock_irqrestore(&cmd->t_task.t_state_lock, flags);
check_lun:
spin_lock_irqsave(&lun->lun_cmd_lock, flags);
- if (atomic_read(&cmd->t_task->transport_lun_active)) {
- list_del(&cmd->se_lun_list);
- atomic_set(&cmd->t_task->transport_lun_active, 0);
+ if (atomic_read(&cmd->t_task.transport_lun_active)) {
+ list_del(&cmd->se_lun_node);
+ atomic_set(&cmd->t_task.transport_lun_active, 0);
#if 0
printk(KERN_INFO "Removed ITT: 0x%08x from LUN LIST[%d]\n"
cmd->se_tfo->get_task_tag(cmd), lun->unpacked_lun);
@@ -737,7 +733,7 @@
void transport_cmd_finish_abort(struct se_cmd *cmd, int remove)
{
- transport_remove_cmd_from_queue(cmd, &cmd->se_lun->lun_se_dev->dev_queue_obj);
+ transport_remove_cmd_from_queue(cmd, &cmd->se_dev->dev_queue_obj);
transport_lun_remove_cmd(cmd);
if (transport_cmd_check_stop_to_fabric(cmd))
@@ -748,7 +744,7 @@
void transport_cmd_finish_abort_tmr(struct se_cmd *cmd)
{
- transport_remove_cmd_from_queue(cmd, &cmd->se_lun->lun_se_dev->dev_queue_obj);
+ transport_remove_cmd_from_queue(cmd, &cmd->se_dev->dev_queue_obj);
if (transport_cmd_check_stop_to_fabric(cmd))
return;
@@ -756,50 +752,36 @@
transport_generic_remove(cmd, 0, 0);
}
-static int transport_add_cmd_to_queue(
+static void transport_add_cmd_to_queue(
struct se_cmd *cmd,
int t_state)
{
struct se_device *dev = cmd->se_dev;
struct se_queue_obj *qobj = &dev->dev_queue_obj;
- struct se_queue_req *qr;
unsigned long flags;
- qr = kzalloc(sizeof(struct se_queue_req), GFP_ATOMIC);
- if (!(qr)) {
- printk(KERN_ERR "Unable to allocate memory for"
- " struct se_queue_req\n");
- return -ENOMEM;
- }
- INIT_LIST_HEAD(&qr->qr_list);
-
- qr->cmd = cmd;
- qr->state = t_state;
+ INIT_LIST_HEAD(&cmd->se_queue_node);
if (t_state) {
- spin_lock_irqsave(&cmd->t_task->t_state_lock, flags);
+ spin_lock_irqsave(&cmd->t_task.t_state_lock, flags);
cmd->t_state = t_state;
- atomic_set(&cmd->t_task->t_transport_active, 1);
- spin_unlock_irqrestore(&cmd->t_task->t_state_lock, flags);
+ atomic_set(&cmd->t_task.t_transport_active, 1);
+ spin_unlock_irqrestore(&cmd->t_task.t_state_lock, flags);
}
spin_lock_irqsave(&qobj->cmd_queue_lock, flags);
- list_add_tail(&qr->qr_list, &qobj->qobj_list);
- atomic_inc(&cmd->t_task->t_transport_queue_active);
+ list_add_tail(&cmd->se_queue_node, &qobj->qobj_list);
+ atomic_inc(&cmd->t_task.t_transport_queue_active);
spin_unlock_irqrestore(&qobj->cmd_queue_lock, flags);
atomic_inc(&qobj->queue_cnt);
wake_up_interruptible(&qobj->thread_wq);
- return 0;
}
-/*
- * Called with struct se_queue_obj->cmd_queue_lock held.
- */
-static struct se_queue_req *
-transport_get_qr_from_queue(struct se_queue_obj *qobj)
+static struct se_cmd *
+transport_get_cmd_from_queue(struct se_queue_obj *qobj)
{
- struct se_queue_req *qr;
+ struct se_cmd *cmd;
unsigned long flags;
spin_lock_irqsave(&qobj->cmd_queue_lock, flags);
@@ -807,47 +789,42 @@
spin_unlock_irqrestore(&qobj->cmd_queue_lock, flags);
return NULL;
}
+ cmd = list_first_entry(&qobj->qobj_list, struct se_cmd, se_queue_node);
- list_for_each_entry(qr, &qobj->qobj_list, qr_list)
- break;
+ atomic_dec(&cmd->t_task.t_transport_queue_active);
- if (qr->cmd)
- atomic_dec(&qr->cmd->t_task->t_transport_queue_active);
-
- list_del(&qr->qr_list);
+ list_del(&cmd->se_queue_node);
atomic_dec(&qobj->queue_cnt);
spin_unlock_irqrestore(&qobj->cmd_queue_lock, flags);
- return qr;
+ return cmd;
}
static void transport_remove_cmd_from_queue(struct se_cmd *cmd,
struct se_queue_obj *qobj)
{
- struct se_queue_req *qr = NULL, *qr_p = NULL;
+ struct se_cmd *t;
unsigned long flags;
spin_lock_irqsave(&qobj->cmd_queue_lock, flags);
- if (!(atomic_read(&cmd->t_task->t_transport_queue_active))) {
+ if (!(atomic_read(&cmd->t_task.t_transport_queue_active))) {
spin_unlock_irqrestore(&qobj->cmd_queue_lock, flags);
return;
}
- list_for_each_entry_safe(qr, qr_p, &qobj->qobj_list, qr_list) {
- if (qr->cmd != cmd)
- continue;
-
- atomic_dec(&qr->cmd->t_task->t_transport_queue_active);
- atomic_dec(&qobj->queue_cnt);
- list_del(&qr->qr_list);
- kfree(qr);
- }
+ list_for_each_entry(t, &qobj->qobj_list, se_queue_node)
+ if (t == cmd) {
+ atomic_dec(&cmd->t_task.t_transport_queue_active);
+ atomic_dec(&qobj->queue_cnt);
+ list_del(&cmd->se_queue_node);
+ break;
+ }
spin_unlock_irqrestore(&qobj->cmd_queue_lock, flags);
- if (atomic_read(&cmd->t_task->t_transport_queue_active)) {
+ if (atomic_read(&cmd->t_task.t_transport_queue_active)) {
printk(KERN_ERR "ITT: 0x%08x t_transport_queue_active: %d\n",
cmd->se_tfo->get_task_tag(cmd),
- atomic_read(&cmd->t_task->t_transport_queue_active));
+ atomic_read(&cmd->t_task.t_transport_queue_active));
}
}
@@ -857,7 +834,7 @@
*/
void transport_complete_sync_cache(struct se_cmd *cmd, int good)
{
- struct se_task *task = list_entry(cmd->t_task->t_task_list.next,
+ struct se_task *task = list_entry(cmd->t_task.t_task_list.next,
struct se_task, t_list);
if (good) {
@@ -887,12 +864,12 @@
unsigned long flags;
#if 0
printk(KERN_INFO "task: %p CDB: 0x%02x obj_ptr: %p\n", task,
- cmd->t_task->t_task_cdb[0], dev);
+ cmd->t_task.t_task_cdb[0], dev);
#endif
if (dev)
atomic_inc(&dev->depth_left);
- spin_lock_irqsave(&cmd->t_task->t_state_lock, flags);
+ spin_lock_irqsave(&cmd->t_task.t_state_lock, flags);
atomic_set(&task->task_active, 0);
/*
@@ -914,14 +891,14 @@
*/
if (atomic_read(&task->task_stop)) {
/*
- * Decrement cmd->t_task->t_se_count if this task had
+ * Decrement cmd->t_task.t_se_count if this task had
* previously thrown its timeout exception handler.
*/
if (atomic_read(&task->task_timeout)) {
- atomic_dec(&cmd->t_task->t_se_count);
+ atomic_dec(&cmd->t_task.t_se_count);
atomic_set(&task->task_timeout, 0);
}
- spin_unlock_irqrestore(&cmd->t_task->t_state_lock, flags);
+ spin_unlock_irqrestore(&cmd->t_task.t_state_lock, flags);
complete(&task->task_stop_comp);
return;
@@ -933,33 +910,33 @@
*/
if (atomic_read(&task->task_timeout)) {
if (!(atomic_dec_and_test(
- &cmd->t_task->t_task_cdbs_timeout_left))) {
- spin_unlock_irqrestore(&cmd->t_task->t_state_lock,
+ &cmd->t_task.t_task_cdbs_timeout_left))) {
+ spin_unlock_irqrestore(&cmd->t_task.t_state_lock,
flags);
return;
}
t_state = TRANSPORT_COMPLETE_TIMEOUT;
- spin_unlock_irqrestore(&cmd->t_task->t_state_lock, flags);
+ spin_unlock_irqrestore(&cmd->t_task.t_state_lock, flags);
transport_add_cmd_to_queue(cmd, t_state);
return;
}
- atomic_dec(&cmd->t_task->t_task_cdbs_timeout_left);
+ atomic_dec(&cmd->t_task.t_task_cdbs_timeout_left);
/*
* Decrement the outstanding t_task_cdbs_left count. The last
* struct se_task from struct se_cmd will complete itself into the
* device queue depending upon int success.
*/
- if (!(atomic_dec_and_test(&cmd->t_task->t_task_cdbs_left))) {
+ if (!(atomic_dec_and_test(&cmd->t_task.t_task_cdbs_left))) {
if (!success)
- cmd->t_task->t_tasks_failed = 1;
+ cmd->t_task.t_tasks_failed = 1;
- spin_unlock_irqrestore(&cmd->t_task->t_state_lock, flags);
+ spin_unlock_irqrestore(&cmd->t_task.t_state_lock, flags);
return;
}
- if (!success || cmd->t_task->t_tasks_failed) {
+ if (!success || cmd->t_task.t_tasks_failed) {
t_state = TRANSPORT_COMPLETE_FAILURE;
if (!task->task_error_status) {
task->task_error_status =
@@ -968,10 +945,10 @@
PYX_TRANSPORT_UNKNOWN_SAM_OPCODE;
}
} else {
- atomic_set(&cmd->t_task->t_transport_complete, 1);
+ atomic_set(&cmd->t_task.t_transport_complete, 1);
t_state = TRANSPORT_COMPLETE_OK;
}
- spin_unlock_irqrestore(&cmd->t_task->t_state_lock, flags);
+ spin_unlock_irqrestore(&cmd->t_task.t_state_lock, flags);
transport_add_cmd_to_queue(cmd, t_state);
}
@@ -1064,8 +1041,8 @@
struct se_task *task;
unsigned long flags;
- spin_lock_irqsave(&cmd->t_task->t_state_lock, flags);
- list_for_each_entry(task, &cmd->t_task->t_task_list, t_list) {
+ spin_lock_irqsave(&cmd->t_task.t_state_lock, flags);
+ list_for_each_entry(task, &cmd->t_task.t_task_list, t_list) {
dev = task->se_dev;
if (atomic_read(&task->task_state_active))
@@ -1081,17 +1058,17 @@
spin_unlock(&dev->execute_task_lock);
}
- spin_unlock_irqrestore(&cmd->t_task->t_state_lock, flags);
+ spin_unlock_irqrestore(&cmd->t_task.t_state_lock, flags);
}
static void transport_add_tasks_from_cmd(struct se_cmd *cmd)
{
- struct se_device *dev = cmd->se_lun->lun_se_dev;
+ struct se_device *dev = cmd->se_dev;
struct se_task *task, *task_prev = NULL;
unsigned long flags;
spin_lock_irqsave(&dev->execute_task_lock, flags);
- list_for_each_entry(task, &cmd->t_task->t_task_list, t_list) {
+ list_for_each_entry(task, &cmd->t_task.t_task_list, t_list) {
if (atomic_read(&task->task_execute_queue))
continue;
/*
@@ -1184,19 +1161,15 @@
*/
static void transport_release_all_cmds(struct se_device *dev)
{
- struct se_cmd *cmd = NULL;
- struct se_queue_req *qr = NULL, *qr_p = NULL;
+ struct se_cmd *cmd, *tcmd;
int bug_out = 0, t_state;
unsigned long flags;
spin_lock_irqsave(&dev->dev_queue_obj.cmd_queue_lock, flags);
- list_for_each_entry_safe(qr, qr_p, &dev->dev_queue_obj.qobj_list,
- qr_list) {
-
- cmd = qr->cmd;
- t_state = qr->state;
- list_del(&qr->qr_list);
- kfree(qr);
+ list_for_each_entry_safe(cmd, tcmd, &dev->dev_queue_obj.qobj_list,
+ se_queue_node) {
+ t_state = cmd->t_state;
+ list_del(&cmd->se_queue_node);
spin_unlock_irqrestore(&dev->dev_queue_obj.cmd_queue_lock,
flags);
@@ -1548,7 +1521,7 @@
transport_init_queue_obj(&dev->dev_queue_obj);
dev->dev_flags = device_flags;
dev->dev_status |= TRANSPORT_DEVICE_DEACTIVATED;
- dev->dev_ptr = (void *) transport_dev;
+ dev->dev_ptr = transport_dev;
dev->se_hba = hba;
dev->se_sub_dev = se_dev;
dev->transport = transport;
@@ -1684,7 +1657,7 @@
enum dma_data_direction data_direction)
{
struct se_task *task;
- struct se_device *dev = cmd->se_lun->lun_se_dev;
+ struct se_device *dev = cmd->se_dev;
unsigned long flags;
task = dev->transport->alloc_task(cmd);
@@ -1697,26 +1670,20 @@
INIT_LIST_HEAD(&task->t_execute_list);
INIT_LIST_HEAD(&task->t_state_list);
init_completion(&task->task_stop_comp);
- task->task_no = cmd->t_task->t_tasks_no++;
+ task->task_no = cmd->t_task.t_tasks_no++;
task->task_se_cmd = cmd;
task->se_dev = dev;
task->task_data_direction = data_direction;
- spin_lock_irqsave(&cmd->t_task->t_state_lock, flags);
- list_add_tail(&task->t_list, &cmd->t_task->t_task_list);
- spin_unlock_irqrestore(&cmd->t_task->t_state_lock, flags);
+ spin_lock_irqsave(&cmd->t_task.t_state_lock, flags);
+ list_add_tail(&task->t_list, &cmd->t_task.t_task_list);
+ spin_unlock_irqrestore(&cmd->t_task.t_state_lock, flags);
return task;
}
static int transport_generic_cmd_sequencer(struct se_cmd *, unsigned char *);
-void transport_device_setup_cmd(struct se_cmd *cmd)
-{
- cmd->se_dev = cmd->se_lun->lun_se_dev;
-}
-EXPORT_SYMBOL(transport_device_setup_cmd);
-
/*
* Used by fabric modules containing a local struct se_cmd within their
* fabric dependent per I/O descriptor.
@@ -1730,20 +1697,18 @@
int task_attr,
unsigned char *sense_buffer)
{
- INIT_LIST_HEAD(&cmd->se_lun_list);
- INIT_LIST_HEAD(&cmd->se_delayed_list);
- INIT_LIST_HEAD(&cmd->se_ordered_list);
- /*
- * Setup t_task pointer to t_task_backstore
- */
- cmd->t_task = &cmd->t_task_backstore;
+ INIT_LIST_HEAD(&cmd->se_lun_node);
+ INIT_LIST_HEAD(&cmd->se_delayed_node);
+ INIT_LIST_HEAD(&cmd->se_ordered_node);
- INIT_LIST_HEAD(&cmd->t_task->t_task_list);
- init_completion(&cmd->t_task->transport_lun_fe_stop_comp);
- init_completion(&cmd->t_task->transport_lun_stop_comp);
- init_completion(&cmd->t_task->t_transport_stop_comp);
- spin_lock_init(&cmd->t_task->t_state_lock);
- atomic_set(&cmd->t_task->transport_dev_active, 1);
+ INIT_LIST_HEAD(&cmd->t_task.t_mem_list);
+ INIT_LIST_HEAD(&cmd->t_task.t_mem_bidi_list);
+ INIT_LIST_HEAD(&cmd->t_task.t_task_list);
+ init_completion(&cmd->t_task.transport_lun_fe_stop_comp);
+ init_completion(&cmd->t_task.transport_lun_stop_comp);
+ init_completion(&cmd->t_task.t_transport_stop_comp);
+ spin_lock_init(&cmd->t_task.t_state_lock);
+ atomic_set(&cmd->t_task.transport_dev_active, 1);
cmd->se_tfo = tfo;
cmd->se_sess = se_sess;
@@ -1760,7 +1725,7 @@
* Check if SAM Task Attribute emulation is enabled for this
* struct se_device storage object
*/
- if (cmd->se_lun->lun_se_dev->dev_task_attr_type != SAM_TASK_ATTR_EMULATED)
+ if (cmd->se_dev->dev_task_attr_type != SAM_TASK_ATTR_EMULATED)
return 0;
if (cmd->sam_task_attr == MSG_ACA_TAG) {
@@ -1772,7 +1737,7 @@
* Used to determine when ORDERED commands should go from
* Dormant to Active status.
*/
- cmd->se_ordered_id = atomic_inc_return(&cmd->se_lun->lun_se_dev->dev_ordered_id);
+ cmd->se_ordered_id = atomic_inc_return(&cmd->se_dev->dev_ordered_id);
smp_mb__after_atomic_inc();
DEBUG_STA("Allocated se_ordered_id: %u for Task Attr: 0x%02x on %s\n",
cmd->se_ordered_id, cmd->sam_task_attr,
@@ -1788,8 +1753,8 @@
/*
* Check and free any extended CDB buffer that was allocated
*/
- if (se_cmd->t_task->t_task_cdb != se_cmd->t_task->__t_task_cdb)
- kfree(se_cmd->t_task->t_task_cdb);
+ if (se_cmd->t_task.t_task_cdb != se_cmd->t_task.__t_task_cdb)
+ kfree(se_cmd->t_task.t_task_cdb);
}
EXPORT_SYMBOL(transport_free_se_cmd);
@@ -1812,7 +1777,6 @@
*/
cmd->transport_wait_for_tasks = &transport_generic_wait_for_tasks;
- transport_device_setup_cmd(cmd);
/*
* Ensure that the received CDB is less than the max (252 + 8) bytes
* for VARIABLE_LENGTH_CMD
@@ -1828,26 +1792,26 @@
* allocate the additional extended CDB buffer now.. Otherwise
* setup the pointer from __t_task_cdb to t_task_cdb.
*/
- if (scsi_command_size(cdb) > sizeof(cmd->t_task->__t_task_cdb)) {
- cmd->t_task->t_task_cdb = kzalloc(scsi_command_size(cdb),
+ if (scsi_command_size(cdb) > sizeof(cmd->t_task.__t_task_cdb)) {
+ cmd->t_task.t_task_cdb = kzalloc(scsi_command_size(cdb),
GFP_KERNEL);
- if (!(cmd->t_task->t_task_cdb)) {
- printk(KERN_ERR "Unable to allocate cmd->t_task->t_task_cdb"
- " %u > sizeof(cmd->t_task->__t_task_cdb): %lu ops\n",
+ if (!(cmd->t_task.t_task_cdb)) {
+ printk(KERN_ERR "Unable to allocate cmd->t_task.t_task_cdb"
+ " %u > sizeof(cmd->t_task.__t_task_cdb): %lu ops\n",
scsi_command_size(cdb),
- (unsigned long)sizeof(cmd->t_task->__t_task_cdb));
+ (unsigned long)sizeof(cmd->t_task.__t_task_cdb));
return -ENOMEM;
}
} else
- cmd->t_task->t_task_cdb = &cmd->t_task->__t_task_cdb[0];
+ cmd->t_task.t_task_cdb = &cmd->t_task.__t_task_cdb[0];
/*
* Copy the original CDB into cmd->t_task.
*/
- memcpy(cmd->t_task->t_task_cdb, cdb, scsi_command_size(cdb));
+ memcpy(cmd->t_task.t_task_cdb, cdb, scsi_command_size(cdb));
/*
* Setup the received CDB based on SCSI defined opcodes and
* perform unit attention, persistent reservations and ALUA
- * checks for virtual device backends. The cmd->t_task->t_task_cdb
+ * checks for virtual device backends. The cmd->t_task.t_task_cdb
* pointer is expected to be setup before we reach this point.
*/
ret = transport_generic_cmd_sequencer(cmd, cdb);
@@ -1859,7 +1823,7 @@
if (transport_check_alloc_task_attr(cmd) < 0) {
cmd->se_cmd_flags |= SCF_SCSI_CDB_EXCEPTION;
cmd->scsi_sense_reason = TCM_INVALID_CDB_FIELD;
- return -2;
+ return -EINVAL;
}
spin_lock(&cmd->se_lun->lun_sep_lock);
if (cmd->se_lun->lun_sep)
@@ -1947,7 +1911,6 @@
* This is needed for early exceptions.
*/
cmd->transport_wait_for_tasks = &transport_generic_wait_for_tasks;
- transport_device_setup_cmd(cmd);
transport_add_cmd_to_queue(cmd, TRANSPORT_PROCESS_TMR);
return 0;
@@ -1973,9 +1936,9 @@
/*
* No tasks remain in the execution queue
*/
- spin_lock_irqsave(&cmd->t_task->t_state_lock, flags);
+ spin_lock_irqsave(&cmd->t_task.t_state_lock, flags);
list_for_each_entry_safe(task, task_tmp,
- &cmd->t_task->t_task_list, t_list) {
+ &cmd->t_task.t_task_list, t_list) {
DEBUG_TS("task_no[%d] - Processing task %p\n",
task->task_no, task);
/*
@@ -1984,14 +1947,14 @@
*/
if (!atomic_read(&task->task_sent) &&
!atomic_read(&task->task_active)) {
- spin_unlock_irqrestore(&cmd->t_task->t_state_lock,
+ spin_unlock_irqrestore(&cmd->t_task.t_state_lock,
flags);
transport_remove_task_from_execute_queue(task,
task->se_dev);
DEBUG_TS("task_no[%d] - Removed from execute queue\n",
task->task_no);
- spin_lock_irqsave(&cmd->t_task->t_state_lock, flags);
+ spin_lock_irqsave(&cmd->t_task.t_state_lock, flags);
continue;
}
@@ -2001,7 +1964,7 @@
*/
if (atomic_read(&task->task_active)) {
atomic_set(&task->task_stop, 1);
- spin_unlock_irqrestore(&cmd->t_task->t_state_lock,
+ spin_unlock_irqrestore(&cmd->t_task.t_state_lock,
flags);
DEBUG_TS("task_no[%d] - Waiting to complete\n",
@@ -2010,8 +1973,8 @@
DEBUG_TS("task_no[%d] - Stopped successfully\n",
task->task_no);
- spin_lock_irqsave(&cmd->t_task->t_state_lock, flags);
- atomic_dec(&cmd->t_task->t_task_cdbs_left);
+ spin_lock_irqsave(&cmd->t_task.t_state_lock, flags);
+ atomic_dec(&cmd->t_task.t_task_cdbs_left);
atomic_set(&task->task_active, 0);
atomic_set(&task->task_stop, 0);
@@ -2022,7 +1985,7 @@
__transport_stop_task_timer(task, &flags);
}
- spin_unlock_irqrestore(&cmd->t_task->t_state_lock, flags);
+ spin_unlock_irqrestore(&cmd->t_task.t_state_lock, flags);
return ret;
}
@@ -2038,7 +2001,7 @@
{
DEBUG_GRF("-----[ Storage Engine Exception for cmd: %p ITT: 0x%08x"
" CDB: 0x%02x\n", cmd, cmd->se_tfo->get_task_tag(cmd),
- cmd->t_task->t_task_cdb[0]);
+ cmd->t_task.t_task_cdb[0]);
DEBUG_GRF("-----[ i_state: %d t_state/def_t_state:"
" %d/%d transport_error_status: %d\n",
cmd->se_tfo->get_cmd_state(cmd),
@@ -2047,13 +2010,13 @@
DEBUG_GRF("-----[ t_task_cdbs: %d t_task_cdbs_left: %d"
" t_task_cdbs_sent: %d t_task_cdbs_ex_left: %d --"
" t_transport_active: %d t_transport_stop: %d"
- " t_transport_sent: %d\n", cmd->t_task->t_task_cdbs,
- atomic_read(&cmd->t_task->t_task_cdbs_left),
- atomic_read(&cmd->t_task->t_task_cdbs_sent),
- atomic_read(&cmd->t_task->t_task_cdbs_ex_left),
- atomic_read(&cmd->t_task->t_transport_active),
- atomic_read(&cmd->t_task->t_transport_stop),
- atomic_read(&cmd->t_task->t_transport_sent));
+ " t_transport_sent: %d\n", cmd->t_task.t_task_cdbs,
+ atomic_read(&cmd->t_task.t_task_cdbs_left),
+ atomic_read(&cmd->t_task.t_task_cdbs_sent),
+ atomic_read(&cmd->t_task.t_task_cdbs_ex_left),
+ atomic_read(&cmd->t_task.t_transport_active),
+ atomic_read(&cmd->t_task.t_transport_stop),
+ atomic_read(&cmd->t_task.t_transport_sent));
transport_stop_all_task_timers(cmd);
@@ -2135,7 +2098,7 @@
break;
default:
printk(KERN_ERR "Unknown transport error for CDB 0x%02x: %d\n",
- cmd->t_task->t_task_cdb[0],
+ cmd->t_task.t_task_cdb[0],
cmd->transport_error_status);
cmd->scsi_sense_reason = TCM_UNSUPPORTED_SCSI_OPCODE;
break;
@@ -2156,19 +2119,19 @@
{
unsigned long flags;
- spin_lock_irqsave(&cmd->t_task->t_state_lock, flags);
- if (!(atomic_read(&cmd->t_task->t_transport_timeout))) {
- spin_unlock_irqrestore(&cmd->t_task->t_state_lock, flags);
+ spin_lock_irqsave(&cmd->t_task.t_state_lock, flags);
+ if (!(atomic_read(&cmd->t_task.t_transport_timeout))) {
+ spin_unlock_irqrestore(&cmd->t_task.t_state_lock, flags);
return;
}
- if (atomic_read(&cmd->t_task->t_task_cdbs_timeout_left)) {
- spin_unlock_irqrestore(&cmd->t_task->t_state_lock, flags);
+ if (atomic_read(&cmd->t_task.t_task_cdbs_timeout_left)) {
+ spin_unlock_irqrestore(&cmd->t_task.t_state_lock, flags);
return;
}
- atomic_sub(atomic_read(&cmd->t_task->t_transport_timeout),
- &cmd->t_task->t_se_count);
- spin_unlock_irqrestore(&cmd->t_task->t_state_lock, flags);
+ atomic_sub(atomic_read(&cmd->t_task.t_transport_timeout),
+ &cmd->t_task.t_se_count);
+ spin_unlock_irqrestore(&cmd->t_task.t_state_lock, flags);
}
static void transport_generic_request_timeout(struct se_cmd *cmd)
@@ -2176,16 +2139,16 @@
unsigned long flags;
/*
- * Reset cmd->t_task->t_se_count to allow transport_generic_remove()
+ * Reset cmd->t_task.t_se_count to allow transport_generic_remove()
* to allow last call to free memory resources.
*/
- spin_lock_irqsave(&cmd->t_task->t_state_lock, flags);
- if (atomic_read(&cmd->t_task->t_transport_timeout) > 1) {
- int tmp = (atomic_read(&cmd->t_task->t_transport_timeout) - 1);
+ spin_lock_irqsave(&cmd->t_task.t_state_lock, flags);
+ if (atomic_read(&cmd->t_task.t_transport_timeout) > 1) {
+ int tmp = (atomic_read(&cmd->t_task.t_transport_timeout) - 1);
- atomic_sub(tmp, &cmd->t_task->t_se_count);
+ atomic_sub(tmp, &cmd->t_task.t_se_count);
}
- spin_unlock_irqrestore(&cmd->t_task->t_state_lock, flags);
+ spin_unlock_irqrestore(&cmd->t_task.t_state_lock, flags);
transport_generic_remove(cmd, 0, 0);
}
@@ -2201,8 +2164,8 @@
return -ENOMEM;
}
- cmd->t_task->t_tasks_se_num = 0;
- cmd->t_task->t_task_buf = buf;
+ cmd->t_task.t_tasks_se_num = 0;
+ cmd->t_task.t_task_buf = buf;
return 0;
}
@@ -2244,9 +2207,9 @@
{
unsigned long flags;
- spin_lock_irqsave(&se_cmd->t_task->t_state_lock, flags);
+ spin_lock_irqsave(&se_cmd->t_task.t_state_lock, flags);
se_cmd->se_cmd_flags |= SCF_SUPPORTED_SAM_OPCODE;
- spin_unlock_irqrestore(&se_cmd->t_task->t_state_lock, flags);
+ spin_unlock_irqrestore(&se_cmd->t_task.t_state_lock, flags);
}
/*
@@ -2260,9 +2223,9 @@
DEBUG_TT("transport task timeout fired! task: %p cmd: %p\n", task, cmd);
- spin_lock_irqsave(&cmd->t_task->t_state_lock, flags);
+ spin_lock_irqsave(&cmd->t_task.t_state_lock, flags);
if (task->task_flags & TF_STOP) {
- spin_unlock_irqrestore(&cmd->t_task->t_state_lock, flags);
+ spin_unlock_irqrestore(&cmd->t_task.t_state_lock, flags);
return;
}
task->task_flags &= ~TF_RUNNING;
@@ -2273,13 +2236,13 @@
if (!(atomic_read(&task->task_active))) {
DEBUG_TT("transport task: %p cmd: %p timeout task_active"
" == 0\n", task, cmd);
- spin_unlock_irqrestore(&cmd->t_task->t_state_lock, flags);
+ spin_unlock_irqrestore(&cmd->t_task.t_state_lock, flags);
return;
}
- atomic_inc(&cmd->t_task->t_se_count);
- atomic_inc(&cmd->t_task->t_transport_timeout);
- cmd->t_task->t_tasks_failed = 1;
+ atomic_inc(&cmd->t_task.t_se_count);
+ atomic_inc(&cmd->t_task.t_transport_timeout);
+ cmd->t_task.t_tasks_failed = 1;
atomic_set(&task->task_timeout, 1);
task->task_error_status = PYX_TRANSPORT_TASK_TIMEOUT;
@@ -2288,28 +2251,28 @@
if (atomic_read(&task->task_stop)) {
DEBUG_TT("transport task: %p cmd: %p timeout task_stop"
" == 1\n", task, cmd);
- spin_unlock_irqrestore(&cmd->t_task->t_state_lock, flags);
+ spin_unlock_irqrestore(&cmd->t_task.t_state_lock, flags);
complete(&task->task_stop_comp);
return;
}
- if (!(atomic_dec_and_test(&cmd->t_task->t_task_cdbs_left))) {
+ if (!(atomic_dec_and_test(&cmd->t_task.t_task_cdbs_left))) {
DEBUG_TT("transport task: %p cmd: %p timeout non zero"
" t_task_cdbs_left\n", task, cmd);
- spin_unlock_irqrestore(&cmd->t_task->t_state_lock, flags);
+ spin_unlock_irqrestore(&cmd->t_task.t_state_lock, flags);
return;
}
DEBUG_TT("transport task: %p cmd: %p timeout ZERO t_task_cdbs_left\n",
task, cmd);
cmd->t_state = TRANSPORT_COMPLETE_FAILURE;
- spin_unlock_irqrestore(&cmd->t_task->t_state_lock, flags);
+ spin_unlock_irqrestore(&cmd->t_task.t_state_lock, flags);
transport_add_cmd_to_queue(cmd, TRANSPORT_COMPLETE_FAILURE);
}
/*
- * Called with cmd->t_task->t_state_lock held.
+ * Called with cmd->t_task.t_state_lock held.
*/
static void transport_start_task_timer(struct se_task *task)
{
@@ -2339,7 +2302,7 @@
}
/*
- * Called with spin_lock_irq(&cmd->t_task->t_state_lock) held.
+ * Called with spin_lock_irq(&cmd->t_task.t_state_lock) held.
*/
void __transport_stop_task_timer(struct se_task *task, unsigned long *flags)
{
@@ -2349,11 +2312,11 @@
return;
task->task_flags |= TF_STOP;
- spin_unlock_irqrestore(&cmd->t_task->t_state_lock, *flags);
+ spin_unlock_irqrestore(&cmd->t_task.t_state_lock, *flags);
del_timer_sync(&task->task_timer);
- spin_lock_irqsave(&cmd->t_task->t_state_lock, *flags);
+ spin_lock_irqsave(&cmd->t_task.t_state_lock, *flags);
task->task_flags &= ~TF_RUNNING;
task->task_flags &= ~TF_STOP;
}
@@ -2363,11 +2326,11 @@
struct se_task *task = NULL, *task_tmp;
unsigned long flags;
- spin_lock_irqsave(&cmd->t_task->t_state_lock, flags);
+ spin_lock_irqsave(&cmd->t_task.t_state_lock, flags);
list_for_each_entry_safe(task, task_tmp,
- &cmd->t_task->t_task_list, t_list)
+ &cmd->t_task.t_task_list, t_list)
__transport_stop_task_timer(task, &flags);
- spin_unlock_irqrestore(&cmd->t_task->t_state_lock, flags);
+ spin_unlock_irqrestore(&cmd->t_task.t_state_lock, flags);
}
static inline int transport_tcq_window_closed(struct se_device *dev)
@@ -2391,14 +2354,14 @@
*/
static inline int transport_execute_task_attr(struct se_cmd *cmd)
{
- if (cmd->se_lun->lun_se_dev->dev_task_attr_type != SAM_TASK_ATTR_EMULATED)
+ if (cmd->se_dev->dev_task_attr_type != SAM_TASK_ATTR_EMULATED)
return 1;
/*
* 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.
*/
if (cmd->sam_task_attr == MSG_HEAD_TAG) {
- atomic_inc(&cmd->se_lun->lun_se_dev->dev_hoq_count);
+ atomic_inc(&cmd->se_dev->dev_hoq_count);
smp_mb__after_atomic_inc();
DEBUG_STA("Added HEAD_OF_QUEUE for CDB:"
" 0x%02x, se_ordered_id: %u\n",
@@ -2406,30 +2369,30 @@
cmd->se_ordered_id);
return 1;
} else if (cmd->sam_task_attr == MSG_ORDERED_TAG) {
- spin_lock(&cmd->se_lun->lun_se_dev->ordered_cmd_lock);
- list_add_tail(&cmd->se_ordered_list,
- &cmd->se_lun->lun_se_dev->ordered_cmd_list);
- spin_unlock(&cmd->se_lun->lun_se_dev->ordered_cmd_lock);
+ spin_lock(&cmd->se_dev->ordered_cmd_lock);
+ list_add_tail(&cmd->se_ordered_node,
+ &cmd->se_dev->ordered_cmd_list);
+ spin_unlock(&cmd->se_dev->ordered_cmd_lock);
- atomic_inc(&cmd->se_lun->lun_se_dev->dev_ordered_sync);
+ atomic_inc(&cmd->se_dev->dev_ordered_sync);
smp_mb__after_atomic_inc();
DEBUG_STA("Added ORDERED for CDB: 0x%02x to ordered"
" list, se_ordered_id: %u\n",
- cmd->t_task->t_task_cdb[0],
+ cmd->t_task.t_task_cdb[0],
cmd->se_ordered_id);
/*
* Add ORDERED command to tail of execution queue if
* no other older commands exist that need to be
* completed first.
*/
- if (!(atomic_read(&cmd->se_lun->lun_se_dev->simple_cmds)))
+ if (!(atomic_read(&cmd->se_dev->simple_cmds)))
return 1;
} else {
/*
* For SIMPLE and UNTAGGED Task Attribute commands
*/
- atomic_inc(&cmd->se_lun->lun_se_dev->simple_cmds);
+ atomic_inc(&cmd->se_dev->simple_cmds);
smp_mb__after_atomic_inc();
}
/*
@@ -2437,20 +2400,20 @@
* add the dormant task(s) built for the passed struct se_cmd to the
* execution queue and become in Active state for this struct se_device.
*/
- if (atomic_read(&cmd->se_lun->lun_se_dev->dev_ordered_sync) != 0) {
+ if (atomic_read(&cmd->se_dev->dev_ordered_sync) != 0) {
/*
* Otherwise, add cmd w/ tasks to delayed cmd queue that
* will be drained upon completion of HEAD_OF_QUEUE task.
*/
- spin_lock(&cmd->se_lun->lun_se_dev->delayed_cmd_lock);
+ spin_lock(&cmd->se_dev->delayed_cmd_lock);
cmd->se_cmd_flags |= SCF_DELAYED_CMD_FROM_SAM_ATTR;
- list_add_tail(&cmd->se_delayed_list,
- &cmd->se_lun->lun_se_dev->delayed_cmd_list);
- spin_unlock(&cmd->se_lun->lun_se_dev->delayed_cmd_lock);
+ list_add_tail(&cmd->se_delayed_node,
+ &cmd->se_dev->delayed_cmd_list);
+ spin_unlock(&cmd->se_dev->delayed_cmd_lock);
DEBUG_STA("Added CDB: 0x%02x Task Attr: 0x%02x to"
" delayed CMD list, se_ordered_id: %u\n",
- cmd->t_task->t_task_cdb[0], cmd->sam_task_attr,
+ cmd->t_task.t_task_cdb[0], cmd->sam_task_attr,
cmd->se_ordered_id);
/*
* Return zero to let transport_execute_tasks() know
@@ -2505,7 +2468,7 @@
* storage object.
*/
execute_tasks:
- __transport_execute_tasks(cmd->se_lun->lun_se_dev);
+ __transport_execute_tasks(cmd->se_dev);
return 0;
}
@@ -2548,17 +2511,17 @@
cmd = task->task_se_cmd;
- spin_lock_irqsave(&cmd->t_task->t_state_lock, flags);
+ spin_lock_irqsave(&cmd->t_task.t_state_lock, flags);
atomic_set(&task->task_active, 1);
atomic_set(&task->task_sent, 1);
- atomic_inc(&cmd->t_task->t_task_cdbs_sent);
+ atomic_inc(&cmd->t_task.t_task_cdbs_sent);
- if (atomic_read(&cmd->t_task->t_task_cdbs_sent) ==
- cmd->t_task->t_task_cdbs)
+ if (atomic_read(&cmd->t_task.t_task_cdbs_sent) ==
+ cmd->t_task.t_task_cdbs)
atomic_set(&cmd->transport_sent, 1);
transport_start_task_timer(task);
- spin_unlock_irqrestore(&cmd->t_task->t_state_lock, flags);
+ spin_unlock_irqrestore(&cmd->t_task.t_state_lock, flags);
/*
* The struct se_cmd->transport_emulate_cdb() function pointer is used
* to grab REPORT_LUNS and other CDBs we want to handle before they hit the
@@ -2623,10 +2586,10 @@
* Any unsolicited data will get dumped for failed command inside of
* the fabric plugin
*/
- spin_lock_irqsave(&se_cmd->t_task->t_state_lock, flags);
+ spin_lock_irqsave(&se_cmd->t_task.t_state_lock, flags);
se_cmd->se_cmd_flags |= SCF_SE_CMD_FAILED;
se_cmd->se_cmd_flags |= SCF_SCSI_CDB_EXCEPTION;
- spin_unlock_irqrestore(&se_cmd->t_task->t_state_lock, flags);
+ spin_unlock_irqrestore(&se_cmd->t_task.t_state_lock, flags);
se_cmd->se_tfo->new_cmd_failure(se_cmd);
}
@@ -2638,7 +2601,7 @@
struct se_cmd *cmd,
int *ret)
{
- struct se_device *dev = cmd->se_lun->lun_se_dev;
+ struct se_device *dev = cmd->se_dev;
/*
* Assume TYPE_DISK for non struct se_device objects.
@@ -2666,7 +2629,7 @@
struct se_cmd *cmd,
int *ret)
{
- struct se_device *dev = cmd->se_lun->lun_se_dev;
+ struct se_device *dev = cmd->se_dev;
/*
* Assume TYPE_DISK for non struct se_device objects.
@@ -2696,7 +2659,7 @@
struct se_cmd *cmd,
int *ret)
{
- struct se_device *dev = cmd->se_lun->lun_se_dev;
+ struct se_device *dev = cmd->se_dev;
/*
* Assume TYPE_DISK for non struct se_device objects.
@@ -2726,7 +2689,7 @@
struct se_cmd *cmd,
int *ret)
{
- struct se_device *dev = cmd->se_lun->lun_se_dev;
+ struct se_device *dev = cmd->se_dev;
/*
* Assume TYPE_DISK for non struct se_device objects.
@@ -2768,7 +2731,7 @@
unsigned char *cdb,
struct se_cmd *cmd)
{
- struct se_device *dev = cmd->se_lun->lun_se_dev;
+ struct se_device *dev = cmd->se_dev;
if (dev->transport->get_device_type(dev) == TYPE_TAPE) {
if (cdb[1] & 1) { /* sectors */
@@ -2836,17 +2799,17 @@
return;
}
/*
- * Copy the scatterlist WRITE buffer located at cmd->t_task->t_mem_list
+ * Copy the scatterlist WRITE buffer located at cmd->t_task.t_mem_list
* into the locally allocated *buf
*/
- transport_memcpy_se_mem_read_contig(cmd, buf, cmd->t_task->t_mem_list);
+ transport_memcpy_se_mem_read_contig(cmd, buf, &cmd->t_task.t_mem_list);
/*
* Now perform the XOR against the BIDI read memory located at
- * cmd->t_task->t_mem_bidi_list
+ * cmd->t_task.t_mem_bidi_list
*/
offset = 0;
- list_for_each_entry(se_mem, cmd->t_task->t_mem_bidi_list, se_list) {
+ list_for_each_entry(se_mem, &cmd->t_task.t_mem_bidi_list, se_list) {
addr = (unsigned char *)kmap_atomic(se_mem->se_page, KM_USER0);
if (!(addr))
goto out;
@@ -2874,14 +2837,14 @@
WARN_ON(!cmd->se_lun);
- spin_lock_irqsave(&cmd->t_task->t_state_lock, flags);
+ spin_lock_irqsave(&cmd->t_task.t_state_lock, flags);
if (cmd->se_cmd_flags & SCF_SENT_CHECK_CONDITION) {
- spin_unlock_irqrestore(&cmd->t_task->t_state_lock, flags);
+ spin_unlock_irqrestore(&cmd->t_task.t_state_lock, flags);
return 0;
}
list_for_each_entry_safe(task, task_tmp,
- &cmd->t_task->t_task_list, t_list) {
+ &cmd->t_task.t_task_list, t_list) {
if (!task->task_sense)
continue;
@@ -2903,12 +2866,12 @@
cmd->se_tfo->get_task_tag(cmd), task->task_no);
continue;
}
- spin_unlock_irqrestore(&cmd->t_task->t_state_lock, flags);
+ spin_unlock_irqrestore(&cmd->t_task.t_state_lock, flags);
offset = cmd->se_tfo->set_fabric_sense_len(cmd,
TRANSPORT_SENSE_BUFFER);
- memcpy((void *)&buffer[offset], (void *)sense_buffer,
+ memcpy(&buffer[offset], sense_buffer,
TRANSPORT_SENSE_BUFFER);
cmd->scsi_status = task->task_scsi_status;
/* Automatically padded */
@@ -2921,7 +2884,7 @@
cmd->scsi_status);
return 0;
}
- spin_unlock_irqrestore(&cmd->t_task->t_state_lock, flags);
+ spin_unlock_irqrestore(&cmd->t_task.t_state_lock, flags);
return -1;
}
@@ -2958,7 +2921,7 @@
core_scsi3_ua_allocate(cmd->se_sess->se_node_acl,
cmd->orig_fe_lun, 0x2C,
ASCQ_2CH_PREVIOUS_RESERVATION_CONFLICT_STATUS);
- return -2;
+ return -EINVAL;
}
/* transport_generic_cmd_sequencer():
@@ -2975,7 +2938,7 @@
struct se_cmd *cmd,
unsigned char *cdb)
{
- struct se_device *dev = cmd->se_lun->lun_se_dev;
+ struct se_device *dev = cmd->se_dev;
struct se_subsystem_dev *su_dev = dev->se_sub_dev;
int ret = 0, sector_ret = 0, passthrough;
u32 sectors = 0, size = 0, pr_reg_type = 0;
@@ -2989,7 +2952,7 @@
&transport_nop_wait_for_tasks;
cmd->se_cmd_flags |= SCF_SCSI_CDB_EXCEPTION;
cmd->scsi_sense_reason = TCM_CHECK_CONDITION_UNIT_ATTENTION;
- return -2;
+ return -EINVAL;
}
/*
* Check status of Asymmetric Logical Unit Assignment port
@@ -3011,7 +2974,7 @@
transport_set_sense_codes(cmd, 0x04, alua_ascq);
cmd->se_cmd_flags |= SCF_SCSI_CDB_EXCEPTION;
cmd->scsi_sense_reason = TCM_CHECK_CONDITION_NOT_READY;
- return -2;
+ return -EINVAL;
}
goto out_invalid_cdb_field;
}
@@ -3036,7 +2999,7 @@
goto out_unsupported_cdb;
size = transport_get_size(sectors, cdb, cmd);
cmd->transport_split_cdb = &split_cdb_XX_6;
- cmd->t_task->t_task_lba = transport_lba_21(cdb);
+ cmd->t_task.t_task_lba = transport_lba_21(cdb);
cmd->se_cmd_flags |= SCF_SCSI_DATA_SG_IO_CDB;
break;
case READ_10:
@@ -3045,7 +3008,7 @@
goto out_unsupported_cdb;
size = transport_get_size(sectors, cdb, cmd);
cmd->transport_split_cdb = &split_cdb_XX_10;
- cmd->t_task->t_task_lba = transport_lba_32(cdb);
+ cmd->t_task.t_task_lba = transport_lba_32(cdb);
cmd->se_cmd_flags |= SCF_SCSI_DATA_SG_IO_CDB;
break;
case READ_12:
@@ -3054,7 +3017,7 @@
goto out_unsupported_cdb;
size = transport_get_size(sectors, cdb, cmd);
cmd->transport_split_cdb = &split_cdb_XX_12;
- cmd->t_task->t_task_lba = transport_lba_32(cdb);
+ cmd->t_task.t_task_lba = transport_lba_32(cdb);
cmd->se_cmd_flags |= SCF_SCSI_DATA_SG_IO_CDB;
break;
case READ_16:
@@ -3063,7 +3026,7 @@
goto out_unsupported_cdb;
size = transport_get_size(sectors, cdb, cmd);
cmd->transport_split_cdb = &split_cdb_XX_16;
- cmd->t_task->t_task_lba = transport_lba_64(cdb);
+ cmd->t_task.t_task_lba = transport_lba_64(cdb);
cmd->se_cmd_flags |= SCF_SCSI_DATA_SG_IO_CDB;
break;
case WRITE_6:
@@ -3072,7 +3035,7 @@
goto out_unsupported_cdb;
size = transport_get_size(sectors, cdb, cmd);
cmd->transport_split_cdb = &split_cdb_XX_6;
- cmd->t_task->t_task_lba = transport_lba_21(cdb);
+ cmd->t_task.t_task_lba = transport_lba_21(cdb);
cmd->se_cmd_flags |= SCF_SCSI_DATA_SG_IO_CDB;
break;
case WRITE_10:
@@ -3081,8 +3044,8 @@
goto out_unsupported_cdb;
size = transport_get_size(sectors, cdb, cmd);
cmd->transport_split_cdb = &split_cdb_XX_10;
- cmd->t_task->t_task_lba = transport_lba_32(cdb);
- cmd->t_task->t_tasks_fua = (cdb[1] & 0x8);
+ cmd->t_task.t_task_lba = transport_lba_32(cdb);
+ cmd->t_task.t_tasks_fua = (cdb[1] & 0x8);
cmd->se_cmd_flags |= SCF_SCSI_DATA_SG_IO_CDB;
break;
case WRITE_12:
@@ -3091,8 +3054,8 @@
goto out_unsupported_cdb;
size = transport_get_size(sectors, cdb, cmd);
cmd->transport_split_cdb = &split_cdb_XX_12;
- cmd->t_task->t_task_lba = transport_lba_32(cdb);
- cmd->t_task->t_tasks_fua = (cdb[1] & 0x8);
+ cmd->t_task.t_task_lba = transport_lba_32(cdb);
+ cmd->t_task.t_tasks_fua = (cdb[1] & 0x8);
cmd->se_cmd_flags |= SCF_SCSI_DATA_SG_IO_CDB;
break;
case WRITE_16:
@@ -3101,20 +3064,20 @@
goto out_unsupported_cdb;
size = transport_get_size(sectors, cdb, cmd);
cmd->transport_split_cdb = &split_cdb_XX_16;
- cmd->t_task->t_task_lba = transport_lba_64(cdb);
- cmd->t_task->t_tasks_fua = (cdb[1] & 0x8);
+ cmd->t_task.t_task_lba = transport_lba_64(cdb);
+ cmd->t_task.t_tasks_fua = (cdb[1] & 0x8);
cmd->se_cmd_flags |= SCF_SCSI_DATA_SG_IO_CDB;
break;
case XDWRITEREAD_10:
if ((cmd->data_direction != DMA_TO_DEVICE) ||
- !(cmd->t_task->t_tasks_bidi))
+ !(cmd->t_task.t_tasks_bidi))
goto out_invalid_cdb_field;
sectors = transport_get_sectors_10(cdb, cmd, §or_ret);
if (sector_ret)
goto out_unsupported_cdb;
size = transport_get_size(sectors, cdb, cmd);
cmd->transport_split_cdb = &split_cdb_XX_10;
- cmd->t_task->t_task_lba = transport_lba_32(cdb);
+ cmd->t_task.t_task_lba = transport_lba_32(cdb);
cmd->se_cmd_flags |= SCF_SCSI_DATA_SG_IO_CDB;
passthrough = (dev->transport->transport_type ==
TRANSPORT_PLUGIN_PHBA_PDEV);
@@ -3127,7 +3090,7 @@
* Setup BIDI XOR callback to be run during transport_generic_complete_ok()
*/
cmd->transport_complete_callback = &transport_xor_callback;
- cmd->t_task->t_tasks_fua = (cdb[1] & 0x8);
+ cmd->t_task.t_tasks_fua = (cdb[1] & 0x8);
break;
case VARIABLE_LENGTH_CMD:
service_action = get_unaligned_be16(&cdb[8]);
@@ -3149,7 +3112,7 @@
* XDWRITE_READ_32 logic.
*/
cmd->transport_split_cdb = &split_cdb_XX_32;
- cmd->t_task->t_task_lba = transport_lba_64_ext(cdb);
+ cmd->t_task.t_task_lba = transport_lba_64_ext(cdb);
cmd->se_cmd_flags |= SCF_SCSI_DATA_SG_IO_CDB;
/*
@@ -3163,14 +3126,14 @@
* transport_generic_complete_ok()
*/
cmd->transport_complete_callback = &transport_xor_callback;
- cmd->t_task->t_tasks_fua = (cdb[10] & 0x8);
+ cmd->t_task.t_tasks_fua = (cdb[10] & 0x8);
break;
case WRITE_SAME_32:
sectors = transport_get_sectors_32(cdb, cmd, §or_ret);
if (sector_ret)
goto out_unsupported_cdb;
size = transport_get_size(sectors, cdb, cmd);
- cmd->t_task->t_task_lba = get_unaligned_be64(&cdb[12]);
+ cmd->t_task.t_task_lba = get_unaligned_be64(&cdb[12]);
cmd->se_cmd_flags |= SCF_SCSI_CONTROL_SG_IO_CDB;
/*
@@ -3299,7 +3262,7 @@
* Do implict HEAD_OF_QUEUE processing for INQUIRY.
* See spc4r17 section 5.3
*/
- if (cmd->se_lun->lun_se_dev->dev_task_attr_type == SAM_TASK_ATTR_EMULATED)
+ if (cmd->se_dev->dev_task_attr_type == SAM_TASK_ATTR_EMULATED)
cmd->sam_task_attr = MSG_HEAD_TAG;
cmd->se_cmd_flags |= SCF_SCSI_CONTROL_NONSG_IO_CDB;
break;
@@ -3405,10 +3368,10 @@
*/
if (cdb[0] == SYNCHRONIZE_CACHE) {
sectors = transport_get_sectors_10(cdb, cmd, §or_ret);
- cmd->t_task->t_task_lba = transport_lba_32(cdb);
+ cmd->t_task.t_task_lba = transport_lba_32(cdb);
} else {
sectors = transport_get_sectors_16(cdb, cmd, §or_ret);
- cmd->t_task->t_task_lba = transport_lba_64(cdb);
+ cmd->t_task.t_task_lba = transport_lba_64(cdb);
}
if (sector_ret)
goto out_unsupported_cdb;
@@ -3454,7 +3417,7 @@
if (sector_ret)
goto out_unsupported_cdb;
size = transport_get_size(sectors, cdb, cmd);
- cmd->t_task->t_task_lba = get_unaligned_be16(&cdb[2]);
+ cmd->t_task.t_task_lba = get_unaligned_be16(&cdb[2]);
passthrough = (dev->transport->transport_type ==
TRANSPORT_PLUGIN_PHBA_PDEV);
/*
@@ -3507,7 +3470,7 @@
* Do implict HEAD_OF_QUEUE processing for REPORT_LUNS
* See spc4r17 section 5.3
*/
- if (cmd->se_lun->lun_se_dev->dev_task_attr_type == SAM_TASK_ATTR_EMULATED)
+ if (cmd->se_dev->dev_task_attr_type == SAM_TASK_ATTR_EMULATED)
cmd->sam_task_attr = MSG_HEAD_TAG;
cmd->se_cmd_flags |= SCF_SCSI_CONTROL_NONSG_IO_CDB;
break;
@@ -3560,11 +3523,11 @@
out_unsupported_cdb:
cmd->se_cmd_flags |= SCF_SCSI_CDB_EXCEPTION;
cmd->scsi_sense_reason = TCM_UNSUPPORTED_SCSI_OPCODE;
- return -2;
+ return -EINVAL;
out_invalid_cdb_field:
cmd->se_cmd_flags |= SCF_SCSI_CDB_EXCEPTION;
cmd->scsi_sense_reason = TCM_INVALID_CDB_FIELD;
- return -2;
+ return -EINVAL;
}
static inline void transport_release_tasks(struct se_cmd *);
@@ -3662,7 +3625,7 @@
*/
static void transport_complete_task_attr(struct se_cmd *cmd)
{
- struct se_device *dev = cmd->se_lun->lun_se_dev;
+ struct se_device *dev = cmd->se_dev;
struct se_cmd *cmd_p, *cmd_tmp;
int new_active_tasks = 0;
@@ -3682,7 +3645,7 @@
cmd->se_ordered_id);
} else if (cmd->sam_task_attr == MSG_ORDERED_TAG) {
spin_lock(&dev->ordered_cmd_lock);
- list_del(&cmd->se_ordered_list);
+ list_del(&cmd->se_ordered_node);
atomic_dec(&dev->dev_ordered_sync);
smp_mb__after_atomic_dec();
spin_unlock(&dev->ordered_cmd_lock);
@@ -3698,9 +3661,9 @@
*/
spin_lock(&dev->delayed_cmd_lock);
list_for_each_entry_safe(cmd_p, cmd_tmp,
- &dev->delayed_cmd_list, se_delayed_list) {
+ &dev->delayed_cmd_list, se_delayed_node) {
- list_del(&cmd_p->se_delayed_list);
+ list_del(&cmd_p->se_delayed_node);
spin_unlock(&dev->delayed_cmd_lock);
DEBUG_STA("Calling add_tasks() for"
@@ -3733,7 +3696,7 @@
* delayed execution list after a HEAD_OF_QUEUE or ORDERED Task
* Attribute.
*/
- if (cmd->se_lun->lun_se_dev->dev_task_attr_type == SAM_TASK_ATTR_EMULATED)
+ if (cmd->se_dev->dev_task_attr_type == SAM_TASK_ATTR_EMULATED)
transport_complete_task_attr(cmd);
/*
* Check if we need to retrieve a sense buffer from
@@ -3777,8 +3740,8 @@
*/
if (cmd->se_cmd_flags & SCF_PASSTHROUGH_CONTIG_TO_SG)
transport_memcpy_write_contig(cmd,
- cmd->t_task->t_task_pt_sgl,
- cmd->t_task->t_task_buf);
+ cmd->t_task.t_task_pt_sgl,
+ cmd->t_task.t_task_buf);
cmd->se_tfo->queue_data_in(cmd);
break;
@@ -3792,7 +3755,7 @@
/*
* Check if we need to send READ payload for BIDI-COMMAND
*/
- if (cmd->t_task->t_mem_bidi_list != NULL) {
+ if (!list_empty(&cmd->t_task.t_mem_bidi_list)) {
spin_lock(&cmd->se_lun->lun_sep_lock);
if (cmd->se_lun->lun_sep) {
cmd->se_lun->lun_sep->sep_stats.tx_data_octets +=
@@ -3819,9 +3782,9 @@
struct se_task *task, *task_tmp;
unsigned long flags;
- spin_lock_irqsave(&cmd->t_task->t_state_lock, flags);
+ spin_lock_irqsave(&cmd->t_task.t_state_lock, flags);
list_for_each_entry_safe(task, task_tmp,
- &cmd->t_task->t_task_list, t_list) {
+ &cmd->t_task.t_task_list, t_list) {
if (atomic_read(&task->task_active))
continue;
@@ -3830,15 +3793,15 @@
list_del(&task->t_list);
- spin_unlock_irqrestore(&cmd->t_task->t_state_lock, flags);
+ spin_unlock_irqrestore(&cmd->t_task.t_state_lock, flags);
if (task->se_dev)
task->se_dev->transport->free_task(task);
else
printk(KERN_ERR "task[%u] - task->se_dev is NULL\n",
task->task_no);
- spin_lock_irqsave(&cmd->t_task->t_state_lock, flags);
+ spin_lock_irqsave(&cmd->t_task.t_state_lock, flags);
}
- spin_unlock_irqrestore(&cmd->t_task->t_state_lock, flags);
+ spin_unlock_irqrestore(&cmd->t_task.t_state_lock, flags);
}
static inline void transport_free_pages(struct se_cmd *cmd)
@@ -3851,9 +3814,9 @@
if (cmd->se_dev->transport->do_se_mem_map)
free_page = 0;
- if (cmd->t_task->t_task_buf) {
- kfree(cmd->t_task->t_task_buf);
- cmd->t_task->t_task_buf = NULL;
+ if (cmd->t_task.t_task_buf) {
+ kfree(cmd->t_task.t_task_buf);
+ cmd->t_task.t_task_buf = NULL;
return;
}
@@ -3863,11 +3826,8 @@
if (cmd->se_cmd_flags & SCF_CMD_PASSTHROUGH_NOALLOC)
return;
- if (!(cmd->t_task->t_tasks_se_num))
- return;
-
list_for_each_entry_safe(se_mem, se_mem_tmp,
- cmd->t_task->t_mem_list, se_list) {
+ &cmd->t_task.t_mem_list, se_list) {
/*
* We only release call __free_page(struct se_mem->se_page) when
* SCF_PASSTHROUGH_SG_TO_MEM_NOALLOC is NOT in use,
@@ -3878,27 +3838,21 @@
list_del(&se_mem->se_list);
kmem_cache_free(se_mem_cache, se_mem);
}
+ cmd->t_task.t_tasks_se_num = 0;
- if (cmd->t_task->t_mem_bidi_list && cmd->t_task->t_tasks_se_bidi_num) {
- list_for_each_entry_safe(se_mem, se_mem_tmp,
- cmd->t_task->t_mem_bidi_list, se_list) {
- /*
- * We only release call __free_page(struct se_mem->se_page) when
- * SCF_PASSTHROUGH_SG_TO_MEM_NOALLOC is NOT in use,
- */
- if (free_page)
- __free_page(se_mem->se_page);
+ list_for_each_entry_safe(se_mem, se_mem_tmp,
+ &cmd->t_task.t_mem_bidi_list, se_list) {
+ /*
+ * We only release call __free_page(struct se_mem->se_page) when
+ * SCF_PASSTHROUGH_SG_TO_MEM_NOALLOC is NOT in use,
+ */
+ if (free_page)
+ __free_page(se_mem->se_page);
- list_del(&se_mem->se_list);
- kmem_cache_free(se_mem_cache, se_mem);
- }
+ list_del(&se_mem->se_list);
+ kmem_cache_free(se_mem_cache, se_mem);
}
-
- kfree(cmd->t_task->t_mem_bidi_list);
- cmd->t_task->t_mem_bidi_list = NULL;
- kfree(cmd->t_task->t_mem_list);
- cmd->t_task->t_mem_list = NULL;
- cmd->t_task->t_tasks_se_num = 0;
+ cmd->t_task.t_tasks_se_bidi_num = 0;
}
static inline void transport_release_tasks(struct se_cmd *cmd)
@@ -3910,23 +3864,23 @@
{
unsigned long flags;
- spin_lock_irqsave(&cmd->t_task->t_state_lock, flags);
- if (atomic_read(&cmd->t_task->t_fe_count)) {
- if (!(atomic_dec_and_test(&cmd->t_task->t_fe_count))) {
- spin_unlock_irqrestore(&cmd->t_task->t_state_lock,
+ spin_lock_irqsave(&cmd->t_task.t_state_lock, flags);
+ if (atomic_read(&cmd->t_task.t_fe_count)) {
+ if (!(atomic_dec_and_test(&cmd->t_task.t_fe_count))) {
+ spin_unlock_irqrestore(&cmd->t_task.t_state_lock,
flags);
return 1;
}
}
- if (atomic_read(&cmd->t_task->t_se_count)) {
- if (!(atomic_dec_and_test(&cmd->t_task->t_se_count))) {
- spin_unlock_irqrestore(&cmd->t_task->t_state_lock,
+ if (atomic_read(&cmd->t_task.t_se_count)) {
+ if (!(atomic_dec_and_test(&cmd->t_task.t_se_count))) {
+ spin_unlock_irqrestore(&cmd->t_task.t_state_lock,
flags);
return 1;
}
}
- spin_unlock_irqrestore(&cmd->t_task->t_state_lock, flags);
+ spin_unlock_irqrestore(&cmd->t_task.t_state_lock, flags);
return 0;
}
@@ -3938,14 +3892,14 @@
if (transport_dec_and_check(cmd))
return;
- spin_lock_irqsave(&cmd->t_task->t_state_lock, flags);
- if (!(atomic_read(&cmd->t_task->transport_dev_active))) {
- spin_unlock_irqrestore(&cmd->t_task->t_state_lock, flags);
+ spin_lock_irqsave(&cmd->t_task.t_state_lock, flags);
+ if (!(atomic_read(&cmd->t_task.transport_dev_active))) {
+ spin_unlock_irqrestore(&cmd->t_task.t_state_lock, flags);
goto free_pages;
}
- atomic_set(&cmd->t_task->transport_dev_active, 0);
+ atomic_set(&cmd->t_task.transport_dev_active, 0);
transport_all_task_dev_remove_state(cmd);
- spin_unlock_irqrestore(&cmd->t_task->t_state_lock, flags);
+ spin_unlock_irqrestore(&cmd->t_task.t_state_lock, flags);
transport_release_tasks(cmd);
free_pages:
@@ -3961,33 +3915,30 @@
{
unsigned long flags;
- if (!(cmd->t_task))
- goto release_cmd;
-
if (transport_dec_and_check(cmd)) {
if (session_reinstatement) {
- spin_lock_irqsave(&cmd->t_task->t_state_lock, flags);
+ spin_lock_irqsave(&cmd->t_task.t_state_lock, flags);
transport_all_task_dev_remove_state(cmd);
- spin_unlock_irqrestore(&cmd->t_task->t_state_lock,
+ spin_unlock_irqrestore(&cmd->t_task.t_state_lock,
flags);
}
return 1;
}
- spin_lock_irqsave(&cmd->t_task->t_state_lock, flags);
- if (!(atomic_read(&cmd->t_task->transport_dev_active))) {
- spin_unlock_irqrestore(&cmd->t_task->t_state_lock, flags);
+ spin_lock_irqsave(&cmd->t_task.t_state_lock, flags);
+ if (!(atomic_read(&cmd->t_task.transport_dev_active))) {
+ spin_unlock_irqrestore(&cmd->t_task.t_state_lock, flags);
goto free_pages;
}
- atomic_set(&cmd->t_task->transport_dev_active, 0);
+ atomic_set(&cmd->t_task.transport_dev_active, 0);
transport_all_task_dev_remove_state(cmd);
- spin_unlock_irqrestore(&cmd->t_task->t_state_lock, flags);
+ spin_unlock_irqrestore(&cmd->t_task.t_state_lock, flags);
transport_release_tasks(cmd);
+
free_pages:
transport_free_pages(cmd);
-release_cmd:
if (release_to_pool) {
transport_release_cmd_to_pool(cmd);
} else {
@@ -4011,35 +3962,19 @@
*/
int transport_generic_map_mem_to_cmd(
struct se_cmd *cmd,
- struct scatterlist *mem,
- u32 sg_mem_num,
- struct scatterlist *mem_bidi_in,
- u32 sg_mem_bidi_num)
+ struct scatterlist *sgl,
+ u32 sgl_count,
+ struct scatterlist *sgl_bidi,
+ u32 sgl_bidi_count)
{
- u32 se_mem_cnt_out = 0;
+ u32 mapped_sg_count = 0;
int ret;
- if (!(mem) || !(sg_mem_num))
+ if (!sgl || !sgl_count)
return 0;
- /*
- * Passed *mem will contain a list_head containing preformatted
- * struct se_mem elements...
- */
- if (!(cmd->se_cmd_flags & SCF_PASSTHROUGH_SG_TO_MEM)) {
- if ((mem_bidi_in) || (sg_mem_bidi_num)) {
- printk(KERN_ERR "SCF_CMD_PASSTHROUGH_NOALLOC not supported"
- " with BIDI-COMMAND\n");
- return -ENOSYS;
- }
- cmd->t_task->t_mem_list = (struct list_head *)mem;
- cmd->t_task->t_tasks_se_num = sg_mem_num;
- cmd->se_cmd_flags |= SCF_CMD_PASSTHROUGH_NOALLOC;
- return 0;
- }
/*
- * Otherwise, assume the caller is passing a struct scatterlist
- * array from include/linux/scatterlist.h
+ * Convert sgls (sgl, sgl_bidi) to list of se_mems
*/
if ((cmd->se_cmd_flags & SCF_SCSI_DATA_SG_IO_CDB) ||
(cmd->se_cmd_flags & SCF_SCSI_CONTROL_SG_IO_CDB)) {
@@ -4048,41 +3983,29 @@
* processed into a TCM struct se_subsystem_dev, we do the mapping
* from the passed physical memory to struct se_mem->se_page here.
*/
- cmd->t_task->t_mem_list = transport_init_se_mem_list();
- if (!(cmd->t_task->t_mem_list))
- return -ENOMEM;
-
ret = transport_map_sg_to_mem(cmd,
- cmd->t_task->t_mem_list, mem, &se_mem_cnt_out);
+ &cmd->t_task.t_mem_list, sgl, &mapped_sg_count);
if (ret < 0)
return -ENOMEM;
- cmd->t_task->t_tasks_se_num = se_mem_cnt_out;
+ cmd->t_task.t_tasks_se_num = mapped_sg_count;
/*
* Setup BIDI READ list of struct se_mem elements
*/
- if ((mem_bidi_in) && (sg_mem_bidi_num)) {
- cmd->t_task->t_mem_bidi_list = transport_init_se_mem_list();
- if (!(cmd->t_task->t_mem_bidi_list)) {
- kfree(cmd->t_task->t_mem_list);
- return -ENOMEM;
- }
- se_mem_cnt_out = 0;
-
+ if (sgl_bidi && sgl_bidi_count) {
+ mapped_sg_count = 0;
ret = transport_map_sg_to_mem(cmd,
- cmd->t_task->t_mem_bidi_list, mem_bidi_in,
- &se_mem_cnt_out);
- if (ret < 0) {
- kfree(cmd->t_task->t_mem_list);
+ &cmd->t_task.t_mem_bidi_list, sgl_bidi,
+ &mapped_sg_count);
+ if (ret < 0)
return -ENOMEM;
- }
- cmd->t_task->t_tasks_se_bidi_num = se_mem_cnt_out;
+ cmd->t_task.t_tasks_se_bidi_num = mapped_sg_count;
}
cmd->se_cmd_flags |= SCF_PASSTHROUGH_SG_TO_MEM_NOALLOC;
} else if (cmd->se_cmd_flags & SCF_SCSI_CONTROL_NONSG_IO_CDB) {
- if (mem_bidi_in || sg_mem_bidi_num) {
+ if (sgl_bidi || sgl_bidi_count) {
printk(KERN_ERR "BIDI-Commands not supported using "
"SCF_SCSI_CONTROL_NONSG_IO_CDB\n");
return -ENOSYS;
@@ -4097,7 +4020,8 @@
* struct scatterlist format.
*/
cmd->se_cmd_flags |= SCF_PASSTHROUGH_CONTIG_TO_SG;
- cmd->t_task->t_task_pt_sgl = mem;
+ cmd->t_task.t_task_pt_sgl = sgl;
+ /* don't need sgl count? We assume it contains cmd->data_length data */
}
return 0;
@@ -4112,21 +4036,21 @@
static int transport_get_sectors(struct se_cmd *cmd)
{
- struct se_device *dev = cmd->se_lun->lun_se_dev;
+ struct se_device *dev = cmd->se_dev;
- cmd->t_task->t_tasks_sectors =
+ cmd->t_task.t_tasks_sectors =
(cmd->data_length / dev->se_sub_dev->se_dev_attrib.block_size);
- if (!(cmd->t_task->t_tasks_sectors))
- cmd->t_task->t_tasks_sectors = 1;
+ if (!(cmd->t_task.t_tasks_sectors))
+ cmd->t_task.t_tasks_sectors = 1;
if (dev->transport->get_device_type(dev) != TYPE_DISK)
return 0;
- if ((cmd->t_task->t_task_lba + cmd->t_task->t_tasks_sectors) >
+ if ((cmd->t_task.t_task_lba + cmd->t_task.t_tasks_sectors) >
transport_dev_end_lba(dev)) {
printk(KERN_ERR "LBA: %llu Sectors: %u exceeds"
" transport_dev_end_lba(): %llu\n",
- cmd->t_task->t_task_lba, cmd->t_task->t_tasks_sectors,
+ cmd->t_task.t_task_lba, cmd->t_task.t_tasks_sectors,
transport_dev_end_lba(dev));
cmd->se_cmd_flags |= SCF_SCSI_CDB_EXCEPTION;
cmd->scsi_sense_reason = TCM_SECTOR_COUNT_TOO_MANY;
@@ -4138,26 +4062,26 @@
static int transport_new_cmd_obj(struct se_cmd *cmd)
{
- struct se_device *dev = cmd->se_lun->lun_se_dev;
+ struct se_device *dev = cmd->se_dev;
u32 task_cdbs = 0, rc;
if (!(cmd->se_cmd_flags & SCF_SCSI_DATA_SG_IO_CDB)) {
task_cdbs++;
- cmd->t_task->t_task_cdbs++;
+ cmd->t_task.t_task_cdbs++;
} else {
int set_counts = 1;
/*
* Setup any BIDI READ tasks and memory from
- * cmd->t_task->t_mem_bidi_list so the READ struct se_tasks
+ * cmd->t_task.t_mem_bidi_list so the READ struct se_tasks
* are queued first for the non pSCSI passthrough case.
*/
- if ((cmd->t_task->t_mem_bidi_list != NULL) &&
+ if (!list_empty(&cmd->t_task.t_mem_bidi_list) &&
(dev->transport->transport_type != TRANSPORT_PLUGIN_PHBA_PDEV)) {
rc = transport_generic_get_cdb_count(cmd,
- cmd->t_task->t_task_lba,
- cmd->t_task->t_tasks_sectors,
- DMA_FROM_DEVICE, cmd->t_task->t_mem_bidi_list,
+ cmd->t_task.t_task_lba,
+ cmd->t_task.t_tasks_sectors,
+ DMA_FROM_DEVICE, &cmd->t_task.t_mem_bidi_list,
set_counts);
if (!(rc)) {
cmd->se_cmd_flags |= SCF_SCSI_CDB_EXCEPTION;
@@ -4168,13 +4092,13 @@
set_counts = 0;
}
/*
- * Setup the tasks and memory from cmd->t_task->t_mem_list
+ * Setup the tasks and memory from cmd->t_task.t_mem_list
* Note for BIDI transfers this will contain the WRITE payload
*/
task_cdbs = transport_generic_get_cdb_count(cmd,
- cmd->t_task->t_task_lba,
- cmd->t_task->t_tasks_sectors,
- cmd->data_direction, cmd->t_task->t_mem_list,
+ cmd->t_task.t_task_lba,
+ cmd->t_task.t_tasks_sectors,
+ cmd->data_direction, &cmd->t_task.t_mem_list,
set_counts);
if (!(task_cdbs)) {
cmd->se_cmd_flags |= SCF_SCSI_CDB_EXCEPTION;
@@ -4182,63 +4106,34 @@
TCM_LOGICAL_UNIT_COMMUNICATION_FAILURE;
return PYX_TRANSPORT_LU_COMM_FAILURE;
}
- cmd->t_task->t_task_cdbs += task_cdbs;
+ cmd->t_task.t_task_cdbs += task_cdbs;
#if 0
printk(KERN_INFO "data_length: %u, LBA: %llu t_tasks_sectors:"
" %u, t_task_cdbs: %u\n", obj_ptr, cmd->data_length,
- cmd->t_task->t_task_lba, cmd->t_task->t_tasks_sectors,
- cmd->t_task->t_task_cdbs);
+ cmd->t_task.t_task_lba, cmd->t_task.t_tasks_sectors,
+ cmd->t_task.t_task_cdbs);
#endif
}
- atomic_set(&cmd->t_task->t_task_cdbs_left, task_cdbs);
- atomic_set(&cmd->t_task->t_task_cdbs_ex_left, task_cdbs);
- atomic_set(&cmd->t_task->t_task_cdbs_timeout_left, task_cdbs);
+ atomic_set(&cmd->t_task.t_task_cdbs_left, task_cdbs);
+ atomic_set(&cmd->t_task.t_task_cdbs_ex_left, task_cdbs);
+ atomic_set(&cmd->t_task.t_task_cdbs_timeout_left, task_cdbs);
return 0;
}
-static struct list_head *transport_init_se_mem_list(void)
-{
- struct list_head *se_mem_list;
-
- se_mem_list = kzalloc(sizeof(struct list_head), GFP_KERNEL);
- if (!(se_mem_list)) {
- printk(KERN_ERR "Unable to allocate memory for se_mem_list\n");
- return NULL;
- }
- INIT_LIST_HEAD(se_mem_list);
-
- return se_mem_list;
-}
-
static int
transport_generic_get_mem(struct se_cmd *cmd, u32 length, u32 dma_size)
{
unsigned char *buf;
struct se_mem *se_mem;
- cmd->t_task->t_mem_list = transport_init_se_mem_list();
- if (!(cmd->t_task->t_mem_list))
- return -ENOMEM;
-
/*
* If the device uses memory mapping this is enough.
*/
if (cmd->se_dev->transport->do_se_mem_map)
return 0;
- /*
- * Setup BIDI-COMMAND READ list of struct se_mem elements
- */
- if (cmd->t_task->t_tasks_bidi) {
- cmd->t_task->t_mem_bidi_list = transport_init_se_mem_list();
- if (!(cmd->t_task->t_mem_bidi_list)) {
- kfree(cmd->t_task->t_mem_list);
- return -ENOMEM;
- }
- }
-
while (length) {
se_mem = kmem_cache_zalloc(se_mem_cache, GFP_KERNEL);
if (!(se_mem)) {
@@ -4263,8 +4158,8 @@
memset(buf, 0, se_mem->se_len);
kunmap_atomic(buf, KM_IRQ0);
- list_add_tail(&se_mem->se_list, cmd->t_task->t_mem_list);
- cmd->t_task->t_tasks_se_num++;
+ list_add_tail(&se_mem->se_list, &cmd->t_task.t_mem_list);
+ cmd->t_task.t_tasks_se_num++;
DEBUG_MEM("Allocated struct se_mem page(%p) Length(%u)"
" Offset(%u)\n", se_mem->se_page, se_mem->se_len,
@@ -4274,7 +4169,7 @@
}
DEBUG_MEM("Allocated total struct se_mem elements(%u)\n",
- cmd->t_task->t_tasks_se_num);
+ cmd->t_task.t_tasks_se_num);
return 0;
out:
@@ -4290,7 +4185,7 @@
u32 task_offset)
{
struct se_cmd *se_cmd = task->task_se_cmd;
- struct se_device *se_dev = se_cmd->se_lun->lun_se_dev;
+ struct se_device *se_dev = se_cmd->se_dev;
struct se_mem *se_mem = in_se_mem;
struct target_core_fabric_ops *tfo = se_cmd->se_tfo;
u32 sg_length, task_size = task->task_size, task_sg_num_padded;
@@ -4306,7 +4201,7 @@
sg_length = se_mem->se_len;
if (!(list_is_last(&se_mem->se_list,
- se_cmd->t_task->t_mem_list)))
+ &se_cmd->t_task.t_mem_list)))
se_mem = list_entry(se_mem->se_list.next,
struct se_mem, se_list);
} else {
@@ -4326,7 +4221,7 @@
sg_length = (se_mem->se_len - task_offset);
if (!(list_is_last(&se_mem->se_list,
- se_cmd->t_task->t_mem_list)))
+ &se_cmd->t_task.t_mem_list)))
se_mem = list_entry(se_mem->se_list.next,
struct se_mem, se_list);
}
@@ -4367,7 +4262,7 @@
* Setup task->task_sg_bidi for SCSI READ payload for
* TCM/pSCSI passthrough if present for BIDI-COMMAND
*/
- if ((se_cmd->t_task->t_mem_bidi_list != NULL) &&
+ if (!list_empty(&se_cmd->t_task.t_mem_bidi_list) &&
(se_dev->transport->transport_type == TRANSPORT_PLUGIN_PHBA_PDEV)) {
task->task_sg_bidi = kzalloc(task_sg_num_padded *
sizeof(struct scatterlist), GFP_KERNEL);
@@ -4458,21 +4353,26 @@
max_sectors_set);
}
+/*
+ * Convert a sgl into a linked list of se_mems.
+ */
static int transport_map_sg_to_mem(
struct se_cmd *cmd,
struct list_head *se_mem_list,
- void *in_mem,
- u32 *se_mem_cnt)
+ struct scatterlist *sg,
+ u32 *sg_count)
{
struct se_mem *se_mem;
- struct scatterlist *sg;
- u32 sg_count = 1, cmd_size = cmd->data_length;
+ u32 cmd_size = cmd->data_length;
- WARN_ON(!in_mem);
-
- sg = (struct scatterlist *)in_mem;
+ WARN_ON(!sg);
while (cmd_size) {
+ /*
+ * NOTE: it is safe to return -ENOMEM at any time in creating this
+ * list because transport_free_pages() will eventually be called, and is
+ * smart enough to deallocate all list items for sg and sg_bidi lists.
+ */
se_mem = kmem_cache_zalloc(se_mem_cache, GFP_KERNEL);
if (!(se_mem)) {
printk(KERN_ERR "Unable to allocate struct se_mem\n");
@@ -4489,26 +4389,21 @@
if (cmd_size > sg->length) {
se_mem->se_len = sg->length;
sg = sg_next(sg);
- sg_count++;
} else
se_mem->se_len = cmd_size;
cmd_size -= se_mem->se_len;
+ (*sg_count)++;
- DEBUG_MEM("sg_to_mem: *se_mem_cnt: %u cmd_size: %u\n",
- *se_mem_cnt, cmd_size);
+ DEBUG_MEM("sg_to_mem: sg_count: %u cmd_size: %u\n",
+ sg_count, cmd_size);
DEBUG_MEM("sg_to_mem: Final se_page: %p se_off: %d se_len: %d\n",
se_mem->se_page, se_mem->se_off, se_mem->se_len);
list_add_tail(&se_mem->se_list, se_mem_list);
- (*se_mem_cnt)++;
}
- DEBUG_MEM("task[0] - Mapped(%u) struct scatterlist segments to(%u)"
- " struct se_mem\n", sg_count, *se_mem_cnt);
-
- if (sg_count != *se_mem_cnt)
- BUG();
+ DEBUG_MEM("task[0] - Mapped(%u) struct scatterlist segments\n", sg_count);
return 0;
}
@@ -4551,7 +4446,7 @@
sg->length = se_mem->se_len;
if (!(list_is_last(&se_mem->se_list,
- se_cmd->t_task->t_mem_list))) {
+ &se_cmd->t_task.t_mem_list))) {
se_mem = list_entry(se_mem->se_list.next,
struct se_mem, se_list);
(*se_mem_cnt)++;
@@ -4587,7 +4482,7 @@
sg->length = (se_mem->se_len - *task_offset);
if (!(list_is_last(&se_mem->se_list,
- se_cmd->t_task->t_mem_list))) {
+ &se_cmd->t_task.t_mem_list))) {
se_mem = list_entry(se_mem->se_list.next,
struct se_mem, se_list);
(*se_mem_cnt)++;
@@ -4645,7 +4540,7 @@
* Walk the struct se_task list and setup scatterlist chains
* for each contiguosly allocated struct se_task->task_sg[].
*/
- list_for_each_entry(task, &cmd->t_task->t_task_list, t_list) {
+ list_for_each_entry(task, &cmd->t_task.t_task_list, t_list) {
if (!(task->task_sg) || !(task->task_padded_sg))
continue;
@@ -4656,7 +4551,7 @@
* Either add chain or mark end of scatterlist
*/
if (!(list_is_last(&task->t_list,
- &cmd->t_task->t_task_list))) {
+ &cmd->t_task.t_task_list))) {
/*
* Clear existing SGL termination bit set in
* transport_init_task_sg(), see sg_mark_end()
@@ -4682,7 +4577,7 @@
/*
* Check for single task..
*/
- if (!(list_is_last(&task->t_list, &cmd->t_task->t_task_list))) {
+ if (!(list_is_last(&task->t_list, &cmd->t_task.t_task_list))) {
/*
* Clear existing SGL termination bit set in
* transport_init_task_sg(), see sg_mark_end()
@@ -4700,18 +4595,18 @@
* Setup the starting pointer and total t_tasks_sg_linked_no including
* padding SGs for linking and to mark the end.
*/
- cmd->t_task->t_tasks_sg_chained = sg_first;
- cmd->t_task->t_tasks_sg_chained_no = sg_count;
+ cmd->t_task.t_tasks_sg_chained = sg_first;
+ cmd->t_task.t_tasks_sg_chained_no = sg_count;
- DEBUG_CMD_M("Setup cmd: %p cmd->t_task->t_tasks_sg_chained: %p and"
- " t_tasks_sg_chained_no: %u\n", cmd, cmd->t_task->t_tasks_sg_chained,
- cmd->t_task->t_tasks_sg_chained_no);
+ DEBUG_CMD_M("Setup cmd: %p cmd->t_task.t_tasks_sg_chained: %p and"
+ " t_tasks_sg_chained_no: %u\n", cmd, cmd->t_task.t_tasks_sg_chained,
+ cmd->t_task.t_tasks_sg_chained_no);
- for_each_sg(cmd->t_task->t_tasks_sg_chained, sg,
- cmd->t_task->t_tasks_sg_chained_no, i) {
+ for_each_sg(cmd->t_task.t_tasks_sg_chained, sg,
+ cmd->t_task.t_tasks_sg_chained_no, i) {
- DEBUG_CMD_M("SG[%d]: %p page: %p length: %d offset: %d, magic: 0x%08x\n",
- i, sg, sg_page(sg), sg->length, sg->offset, sg->sg_magic);
+ DEBUG_CMD_M("SG[%d]: %p page: %p length: %d offset: %d\n",
+ i, sg, sg_page(sg), sg->length, sg->offset);
if (sg_is_chain(sg))
DEBUG_CMD_M("SG: %p sg_is_chain=1\n", sg);
if (sg_is_last(sg))
@@ -4741,7 +4636,7 @@
in_mem, in_se_mem, out_se_mem, se_mem_cnt,
task_offset_in);
if (ret == 0)
- task->task_se_cmd->t_task->t_tasks_se_num += *se_mem_cnt;
+ task->task_se_cmd->t_task.t_tasks_se_num += *se_mem_cnt;
return ret;
}
@@ -4791,7 +4686,7 @@
struct se_task *task;
struct se_mem *se_mem = NULL, *se_mem_lout = NULL;
struct se_mem *se_mem_bidi = NULL, *se_mem_bidi_lout = NULL;
- struct se_device *dev = cmd->se_lun->lun_se_dev;
+ struct se_device *dev = cmd->se_dev;
int max_sectors_set = 0, ret;
u32 task_offset_in = 0, se_mem_cnt = 0, se_mem_bidi_cnt = 0, task_cdbs = 0;
@@ -4805,15 +4700,14 @@
* mem_list will ever be empty at this point.
*/
if (!(list_empty(mem_list)))
- se_mem = list_entry(mem_list->next, struct se_mem, se_list);
+ se_mem = list_first_entry(mem_list, struct se_mem, se_list);
/*
* Check for extra se_mem_bidi mapping for BIDI-COMMANDs to
* struct se_task->task_sg_bidi for TCM/pSCSI passthrough operation
*/
- if ((cmd->t_task->t_mem_bidi_list != NULL) &&
- !(list_empty(cmd->t_task->t_mem_bidi_list)) &&
+ if (!list_empty(&cmd->t_task.t_mem_bidi_list) &&
(dev->transport->transport_type == TRANSPORT_PLUGIN_PHBA_PDEV))
- se_mem_bidi = list_entry(cmd->t_task->t_mem_bidi_list->next,
+ se_mem_bidi = list_first_entry(&cmd->t_task.t_mem_bidi_list,
struct se_mem, se_list);
while (sectors) {
@@ -4836,15 +4730,15 @@
cdb = dev->transport->get_cdb(task);
if ((cdb)) {
- memcpy(cdb, cmd->t_task->t_task_cdb,
- scsi_command_size(cmd->t_task->t_task_cdb));
+ memcpy(cdb, cmd->t_task.t_task_cdb,
+ scsi_command_size(cmd->t_task.t_task_cdb));
cmd->transport_split_cdb(task->task_lba,
&task->task_sectors, cdb);
}
/*
* Perform the SE OBJ plugin and/or Transport plugin specific
- * mapping for cmd->t_task->t_mem_list. And setup the
+ * mapping for cmd->t_task.t_mem_list. And setup the
* task->task_sg and if necessary task->task_sg_bidi
*/
ret = transport_do_se_mem_map(dev, task, mem_list,
@@ -4855,7 +4749,7 @@
se_mem = se_mem_lout;
/*
- * Setup the cmd->t_task->t_mem_bidi_list -> task->task_sg_bidi
+ * Setup the cmd->t_task.t_mem_bidi_list -> task->task_sg_bidi
* mapping for SCSI READ for BIDI-COMMAND passthrough with TCM/pSCSI
*
* Note that the first call to transport_do_se_mem_map() above will
@@ -4865,7 +4759,7 @@
*/
if (task->task_sg_bidi != NULL) {
ret = transport_do_se_mem_map(dev, task,
- cmd->t_task->t_mem_bidi_list, NULL,
+ &cmd->t_task.t_mem_bidi_list, NULL,
se_mem_bidi, &se_mem_bidi_lout, &se_mem_bidi_cnt,
&task_offset_in);
if (ret < 0)
@@ -4888,8 +4782,8 @@
}
if (set_counts) {
- atomic_inc(&cmd->t_task->t_fe_count);
- atomic_inc(&cmd->t_task->t_se_count);
+ atomic_inc(&cmd->t_task.t_fe_count);
+ atomic_inc(&cmd->t_task.t_se_count);
}
DEBUG_VOL("ITT[0x%08x] total %s cdbs(%u)\n",
@@ -4904,7 +4798,7 @@
static int
transport_map_control_cmd_to_task(struct se_cmd *cmd)
{
- struct se_device *dev = cmd->se_lun->lun_se_dev;
+ struct se_device *dev = cmd->se_dev;
unsigned char *cdb;
struct se_task *task;
int ret;
@@ -4915,26 +4809,26 @@
cdb = dev->transport->get_cdb(task);
if (cdb)
- memcpy(cdb, cmd->t_task->t_task_cdb,
- scsi_command_size(cmd->t_task->t_task_cdb));
+ memcpy(cdb, cmd->t_task.t_task_cdb,
+ scsi_command_size(cmd->t_task.t_task_cdb));
task->task_size = cmd->data_length;
task->task_sg_num =
(cmd->se_cmd_flags & SCF_SCSI_CONTROL_SG_IO_CDB) ? 1 : 0;
- atomic_inc(&cmd->t_task->t_fe_count);
- atomic_inc(&cmd->t_task->t_se_count);
+ atomic_inc(&cmd->t_task.t_fe_count);
+ atomic_inc(&cmd->t_task.t_se_count);
if (cmd->se_cmd_flags & SCF_SCSI_CONTROL_SG_IO_CDB) {
struct se_mem *se_mem = NULL, *se_mem_lout = NULL;
u32 se_mem_cnt = 0, task_offset = 0;
- if (!list_empty(cmd->t_task->t_mem_list))
- se_mem = list_entry(cmd->t_task->t_mem_list->next,
+ if (!list_empty(&cmd->t_task.t_mem_list))
+ se_mem = list_first_entry(&cmd->t_task.t_mem_list,
struct se_mem, se_list);
ret = transport_do_se_mem_map(dev, task,
- cmd->t_task->t_mem_list, NULL, se_mem,
+ &cmd->t_task.t_mem_list, NULL, se_mem,
&se_mem_lout, &se_mem_cnt, &task_offset);
if (ret < 0)
return PYX_TRANSPORT_OUT_OF_MEMORY_RESOURCES;
@@ -4969,14 +4863,14 @@
{
struct se_portal_group *se_tpg;
struct se_task *task;
- struct se_device *dev = cmd->se_lun->lun_se_dev;
+ struct se_device *dev = cmd->se_dev;
int ret = 0;
/*
* Determine is the TCM fabric module has already allocated physical
* memory, and is directly calling transport_generic_map_mem_to_cmd()
* to setup beforehand the linked list of physical memory at
- * cmd->t_task->t_mem_list of struct se_mem->se_page
+ * cmd->t_task.t_mem_list of struct se_mem->se_page
*/
if (!(cmd->se_cmd_flags & SCF_PASSTHROUGH_SG_TO_MEM_NOALLOC)) {
ret = transport_allocate_resources(cmd);
@@ -5005,7 +4899,7 @@
}
if (cmd->se_cmd_flags & SCF_SCSI_DATA_SG_IO_CDB) {
- list_for_each_entry(task, &cmd->t_task->t_task_list, t_list) {
+ list_for_each_entry(task, &cmd->t_task.t_task_list, t_list) {
if (atomic_read(&task->task_sent))
continue;
if (!dev->transport->map_task_SG)
@@ -5052,9 +4946,9 @@
* original EDTL
*/
if (cmd->se_cmd_flags & SCF_UNDERFLOW_BIT) {
- if (!cmd->t_task->t_tasks_se_num) {
+ if (!cmd->t_task.t_tasks_se_num) {
unsigned char *dst, *buf =
- (unsigned char *)cmd->t_task->t_task_buf;
+ (unsigned char *)cmd->t_task.t_task_buf;
dst = kzalloc(cmd->cmd_spdtl), GFP_KERNEL);
if (!(dst)) {
@@ -5066,15 +4960,15 @@
}
memcpy(dst, buf, cmd->cmd_spdtl);
- kfree(cmd->t_task->t_task_buf);
- cmd->t_task->t_task_buf = dst;
+ kfree(cmd->t_task.t_task_buf);
+ cmd->t_task.t_task_buf = dst;
} else {
struct scatterlist *sg =
- (struct scatterlist *sg)cmd->t_task->t_task_buf;
+ (struct scatterlist *sg)cmd->t_task.t_task_buf;
struct scatterlist *orig_sg;
orig_sg = kzalloc(sizeof(struct scatterlist) *
- cmd->t_task->t_tasks_se_num,
+ cmd->t_task.t_tasks_se_num,
GFP_KERNEL))) {
if (!(orig_sg)) {
printk(KERN_ERR "Unable to allocate memory"
@@ -5084,9 +4978,9 @@
return;
}
- memcpy(orig_sg, cmd->t_task->t_task_buf,
+ memcpy(orig_sg, cmd->t_task.t_task_buf,
sizeof(struct scatterlist) *
- cmd->t_task->t_tasks_se_num);
+ cmd->t_task.t_tasks_se_num);
cmd->data_length = cmd->cmd_spdtl;
/*
@@ -5117,22 +5011,22 @@
unsigned long flags;
int ret;
- spin_lock_irqsave(&cmd->t_task->t_state_lock, flags);
+ spin_lock_irqsave(&cmd->t_task.t_state_lock, flags);
cmd->t_state = TRANSPORT_WRITE_PENDING;
- spin_unlock_irqrestore(&cmd->t_task->t_state_lock, flags);
+ spin_unlock_irqrestore(&cmd->t_task.t_state_lock, flags);
/*
* For the TCM control CDBs using a contiguous buffer, do the memcpy
* from the passed Linux/SCSI struct scatterlist located at
- * se_cmd->t_task->t_task_pt_buf to the contiguous buffer at
- * se_cmd->t_task->t_task_buf.
+ * se_cmd->t_task.t_task_pt_buf to the contiguous buffer at
+ * se_cmd->t_task.t_task_buf.
*/
if (cmd->se_cmd_flags & SCF_PASSTHROUGH_CONTIG_TO_SG)
transport_memcpy_read_contig(cmd,
- cmd->t_task->t_task_buf,
- cmd->t_task->t_task_pt_sgl);
+ cmd->t_task.t_task_buf,
+ cmd->t_task.t_task_pt_sgl);
/*
* Clear the se_cmd for WRITE_PENDING status in order to set
- * cmd->t_task->t_transport_active=0 so that transport_generic_handle_data
+ * cmd->t_task.t_transport_active=0 so that transport_generic_handle_data
* can be called from HW target mode interrupt code. This is safe
* to be called with transport_off=1 before the cmd->se_tfo->write_pending
* because the se_cmd->se_lun pointer is not being cleared.
@@ -5156,7 +5050,6 @@
*/
void transport_release_cmd_to_pool(struct se_cmd *cmd)
{
- BUG_ON(!cmd->t_task);
BUG_ON(!cmd->se_tfo);
transport_free_se_cmd(cmd);
@@ -5174,7 +5067,7 @@
int release_to_pool,
int session_reinstatement)
{
- if (!(cmd->se_cmd_flags & SCF_SE_LUN_CMD) || !cmd->t_task)
+ if (!(cmd->se_cmd_flags & SCF_SE_LUN_CMD))
transport_release_cmd_to_pool(cmd);
else {
core_dec_lacl_count(cmd->se_sess->se_node_acl, cmd);
@@ -5220,32 +5113,32 @@
* If the frontend has already requested this struct se_cmd to
* be stopped, we can safely ignore this struct se_cmd.
*/
- spin_lock_irqsave(&cmd->t_task->t_state_lock, flags);
- if (atomic_read(&cmd->t_task->t_transport_stop)) {
- atomic_set(&cmd->t_task->transport_lun_stop, 0);
+ spin_lock_irqsave(&cmd->t_task.t_state_lock, flags);
+ if (atomic_read(&cmd->t_task.t_transport_stop)) {
+ atomic_set(&cmd->t_task.transport_lun_stop, 0);
DEBUG_TRANSPORT_S("ConfigFS ITT[0x%08x] - t_transport_stop =="
" TRUE, skipping\n", cmd->se_tfo->get_task_tag(cmd));
- spin_unlock_irqrestore(&cmd->t_task->t_state_lock, flags);
+ spin_unlock_irqrestore(&cmd->t_task.t_state_lock, flags);
transport_cmd_check_stop(cmd, 1, 0);
return -EPERM;
}
- atomic_set(&cmd->t_task->transport_lun_fe_stop, 1);
- spin_unlock_irqrestore(&cmd->t_task->t_state_lock, flags);
+ atomic_set(&cmd->t_task.transport_lun_fe_stop, 1);
+ spin_unlock_irqrestore(&cmd->t_task.t_state_lock, flags);
- wake_up_interruptible(&cmd->se_lun->lun_se_dev->dev_queue_obj.thread_wq);
+ wake_up_interruptible(&cmd->se_dev->dev_queue_obj.thread_wq);
ret = transport_stop_tasks_for_cmd(cmd);
DEBUG_TRANSPORT_S("ConfigFS: cmd: %p t_task_cdbs: %d stop tasks ret:"
- " %d\n", cmd, cmd->t_task->t_task_cdbs, ret);
+ " %d\n", cmd, cmd->t_task.t_task_cdbs, ret);
if (!ret) {
DEBUG_TRANSPORT_S("ConfigFS: ITT[0x%08x] - stopping cmd....\n",
cmd->se_tfo->get_task_tag(cmd));
- wait_for_completion(&cmd->t_task->transport_lun_stop_comp);
+ wait_for_completion(&cmd->t_task.transport_lun_stop_comp);
DEBUG_TRANSPORT_S("ConfigFS: ITT[0x%08x] - stopped cmd....\n",
cmd->se_tfo->get_task_tag(cmd));
}
- transport_remove_cmd_from_queue(cmd, &cmd->se_lun->lun_se_dev->dev_queue_obj);
+ transport_remove_cmd_from_queue(cmd, &cmd->se_dev->dev_queue_obj);
return 0;
}
@@ -5266,31 +5159,24 @@
* Initiator Port.
*/
spin_lock_irqsave(&lun->lun_cmd_lock, lun_flags);
- while (!list_empty_careful(&lun->lun_cmd_list)) {
- cmd = list_entry(lun->lun_cmd_list.next,
- struct se_cmd, se_lun_list);
- list_del(&cmd->se_lun_list);
+ while (!list_empty(&lun->lun_cmd_list)) {
+ cmd = list_first_entry(&lun->lun_cmd_list,
+ struct se_cmd, se_lun_node);
+ list_del(&cmd->se_lun_node);
- if (!(cmd->t_task)) {
- printk(KERN_ERR "ITT: 0x%08x, cmd->t_task = NULL"
- "[i,t]_state: %u/%u\n",
- cmd->se_tfo->get_task_tag(cmd),
- cmd->se_tfo->get_cmd_state(cmd), cmd->t_state);
- BUG();
- }
- atomic_set(&cmd->t_task->transport_lun_active, 0);
+ atomic_set(&cmd->t_task.transport_lun_active, 0);
/*
* This will notify iscsi_target_transport.c:
* transport_cmd_check_stop() that a LUN shutdown is in
* progress for the iscsi_cmd_t.
*/
- spin_lock(&cmd->t_task->t_state_lock);
- DEBUG_CLEAR_L("SE_LUN[%d] - Setting cmd->t_task->transport"
+ spin_lock(&cmd->t_task.t_state_lock);
+ DEBUG_CLEAR_L("SE_LUN[%d] - Setting cmd->t_task.transport"
"_lun_stop for ITT: 0x%08x\n",
cmd->se_lun->unpacked_lun,
cmd->se_tfo->get_task_tag(cmd));
- atomic_set(&cmd->t_task->transport_lun_stop, 1);
- spin_unlock(&cmd->t_task->t_state_lock);
+ atomic_set(&cmd->t_task.transport_lun_stop, 1);
+ spin_unlock(&cmd->t_task.t_state_lock);
spin_unlock_irqrestore(&lun->lun_cmd_lock, lun_flags);
@@ -5318,14 +5204,14 @@
cmd->se_lun->unpacked_lun,
cmd->se_tfo->get_task_tag(cmd));
- spin_lock_irqsave(&cmd->t_task->t_state_lock, cmd_flags);
- if (!(atomic_read(&cmd->t_task->transport_dev_active))) {
- spin_unlock_irqrestore(&cmd->t_task->t_state_lock, cmd_flags);
+ spin_lock_irqsave(&cmd->t_task.t_state_lock, cmd_flags);
+ if (!(atomic_read(&cmd->t_task.transport_dev_active))) {
+ spin_unlock_irqrestore(&cmd->t_task.t_state_lock, cmd_flags);
goto check_cond;
}
- atomic_set(&cmd->t_task->transport_dev_active, 0);
+ atomic_set(&cmd->t_task.transport_dev_active, 0);
transport_all_task_dev_remove_state(cmd);
- spin_unlock_irqrestore(&cmd->t_task->t_state_lock, cmd_flags);
+ spin_unlock_irqrestore(&cmd->t_task.t_state_lock, cmd_flags);
transport_free_dev_tasks(cmd);
/*
@@ -5342,24 +5228,24 @@
* be released, notify the waiting thread now that LU has
* finished accessing it.
*/
- spin_lock_irqsave(&cmd->t_task->t_state_lock, cmd_flags);
- if (atomic_read(&cmd->t_task->transport_lun_fe_stop)) {
+ spin_lock_irqsave(&cmd->t_task.t_state_lock, cmd_flags);
+ if (atomic_read(&cmd->t_task.transport_lun_fe_stop)) {
DEBUG_CLEAR_L("SE_LUN[%d] - Detected FE stop for"
" struct se_cmd: %p ITT: 0x%08x\n",
lun->unpacked_lun,
cmd, cmd->se_tfo->get_task_tag(cmd));
- spin_unlock_irqrestore(&cmd->t_task->t_state_lock,
+ spin_unlock_irqrestore(&cmd->t_task.t_state_lock,
cmd_flags);
transport_cmd_check_stop(cmd, 1, 0);
- complete(&cmd->t_task->transport_lun_fe_stop_comp);
+ complete(&cmd->t_task.transport_lun_fe_stop_comp);
spin_lock_irqsave(&lun->lun_cmd_lock, lun_flags);
continue;
}
DEBUG_CLEAR_L("SE_LUN[%d] - ITT: 0x%08x finished processing\n",
lun->unpacked_lun, cmd->se_tfo->get_task_tag(cmd));
- spin_unlock_irqrestore(&cmd->t_task->t_state_lock, cmd_flags);
+ spin_unlock_irqrestore(&cmd->t_task.t_state_lock, cmd_flags);
spin_lock_irqsave(&lun->lun_cmd_lock, lun_flags);
}
spin_unlock_irqrestore(&lun->lun_cmd_lock, lun_flags);
@@ -5379,7 +5265,7 @@
{
struct task_struct *kt;
- kt = kthread_run(transport_clear_lun_thread, (void *)lun,
+ kt = kthread_run(transport_clear_lun_thread, lun,
"tcm_cl_%u", lun->unpacked_lun);
if (IS_ERR(kt)) {
printk(KERN_ERR "Unable to start clear_lun thread\n");
@@ -5405,15 +5291,15 @@
if (!(cmd->se_cmd_flags & SCF_SE_LUN_CMD) && !(cmd->se_tmr_req))
return;
- spin_lock_irqsave(&cmd->t_task->t_state_lock, flags);
+ spin_lock_irqsave(&cmd->t_task.t_state_lock, flags);
/*
* If we are already stopped due to an external event (ie: LUN shutdown)
* sleep until the connection can have the passed struct se_cmd back.
- * The cmd->t_task->transport_lun_stopped_sem will be upped by
+ * The cmd->t_task.transport_lun_stopped_sem will be upped by
* transport_clear_lun_from_sessions() once the ConfigFS context caller
* has completed its operation on the struct se_cmd.
*/
- if (atomic_read(&cmd->t_task->transport_lun_stop)) {
+ if (atomic_read(&cmd->t_task.transport_lun_stop)) {
DEBUG_TRANSPORT_S("wait_for_tasks: Stopping"
" wait_for_completion(&cmd->t_tasktransport_lun_fe"
@@ -5426,10 +5312,10 @@
* We go ahead and up transport_lun_stop_comp just to be sure
* here.
*/
- spin_unlock_irqrestore(&cmd->t_task->t_state_lock, flags);
- complete(&cmd->t_task->transport_lun_stop_comp);
- wait_for_completion(&cmd->t_task->transport_lun_fe_stop_comp);
- spin_lock_irqsave(&cmd->t_task->t_state_lock, flags);
+ spin_unlock_irqrestore(&cmd->t_task.t_state_lock, flags);
+ complete(&cmd->t_task.transport_lun_stop_comp);
+ wait_for_completion(&cmd->t_task.transport_lun_fe_stop_comp);
+ spin_lock_irqsave(&cmd->t_task.t_state_lock, flags);
transport_all_task_dev_remove_state(cmd);
/*
@@ -5442,13 +5328,13 @@
"stop_comp); for ITT: 0x%08x\n",
cmd->se_tfo->get_task_tag(cmd));
- atomic_set(&cmd->t_task->transport_lun_stop, 0);
+ atomic_set(&cmd->t_task.transport_lun_stop, 0);
}
- if (!atomic_read(&cmd->t_task->t_transport_active) ||
- atomic_read(&cmd->t_task->t_transport_aborted))
+ if (!atomic_read(&cmd->t_task.t_transport_active) ||
+ atomic_read(&cmd->t_task.t_transport_aborted))
goto remove;
- atomic_set(&cmd->t_task->t_transport_stop, 1);
+ atomic_set(&cmd->t_task.t_transport_stop, 1);
DEBUG_TRANSPORT_S("wait_for_tasks: Stopping %p ITT: 0x%08x"
" i_state: %d, t_state/def_t_state: %d/%d, t_transport_stop"
@@ -5456,21 +5342,21 @@
cmd->se_tfo->get_cmd_state(cmd), cmd->t_state,
cmd->deferred_t_state);
- spin_unlock_irqrestore(&cmd->t_task->t_state_lock, flags);
+ spin_unlock_irqrestore(&cmd->t_task.t_state_lock, flags);
- wake_up_interruptible(&cmd->se_lun->lun_se_dev->dev_queue_obj.thread_wq);
+ wake_up_interruptible(&cmd->se_dev->dev_queue_obj.thread_wq);
- wait_for_completion(&cmd->t_task->t_transport_stop_comp);
+ wait_for_completion(&cmd->t_task.t_transport_stop_comp);
- spin_lock_irqsave(&cmd->t_task->t_state_lock, flags);
- atomic_set(&cmd->t_task->t_transport_active, 0);
- atomic_set(&cmd->t_task->t_transport_stop, 0);
+ spin_lock_irqsave(&cmd->t_task.t_state_lock, flags);
+ atomic_set(&cmd->t_task.t_transport_active, 0);
+ atomic_set(&cmd->t_task.t_transport_stop, 0);
DEBUG_TRANSPORT_S("wait_for_tasks: Stopped wait_for_compltion("
- "&cmd->t_task->t_transport_stop_comp) for ITT: 0x%08x\n",
+ "&cmd->t_task.t_transport_stop_comp) for ITT: 0x%08x\n",
cmd->se_tfo->get_task_tag(cmd));
remove:
- spin_unlock_irqrestore(&cmd->t_task->t_state_lock, flags);
+ spin_unlock_irqrestore(&cmd->t_task.t_state_lock, flags);
if (!remove_cmd)
return;
@@ -5509,13 +5395,13 @@
int offset;
u8 asc = 0, ascq = 0;
- spin_lock_irqsave(&cmd->t_task->t_state_lock, flags);
+ spin_lock_irqsave(&cmd->t_task.t_state_lock, flags);
if (cmd->se_cmd_flags & SCF_SENT_CHECK_CONDITION) {
- spin_unlock_irqrestore(&cmd->t_task->t_state_lock, flags);
+ spin_unlock_irqrestore(&cmd->t_task.t_state_lock, flags);
return 0;
}
cmd->se_cmd_flags |= SCF_SENT_CHECK_CONDITION;
- spin_unlock_irqrestore(&cmd->t_task->t_state_lock, flags);
+ spin_unlock_irqrestore(&cmd->t_task.t_state_lock, flags);
if (!reason && from_transport)
goto after_reason;
@@ -5674,14 +5560,14 @@
{
int ret = 0;
- if (atomic_read(&cmd->t_task->t_transport_aborted) != 0) {
+ if (atomic_read(&cmd->t_task.t_transport_aborted) != 0) {
if (!(send_status) ||
(cmd->se_cmd_flags & SCF_SENT_DELAYED_TAS))
return 1;
#if 0
printk(KERN_INFO "Sending delayed SAM_STAT_TASK_ABORTED"
" status for CDB: 0x%02x ITT: 0x%08x\n",
- cmd->t_task->t_task_cdb[0],
+ cmd->t_task.t_task_cdb[0],
cmd->se_tfo->get_task_tag(cmd));
#endif
cmd->se_cmd_flags |= SCF_SENT_DELAYED_TAS;
@@ -5702,7 +5588,7 @@
*/
if (cmd->data_direction == DMA_TO_DEVICE) {
if (cmd->se_tfo->write_pending_status(cmd) != 0) {
- atomic_inc(&cmd->t_task->t_transport_aborted);
+ atomic_inc(&cmd->t_task.t_transport_aborted);
smp_mb__after_atomic_inc();
cmd->scsi_status = SAM_STAT_TASK_ABORTED;
transport_new_cmd_failure(cmd);
@@ -5712,7 +5598,7 @@
cmd->scsi_status = SAM_STAT_TASK_ABORTED;
#if 0
printk(KERN_INFO "Setting SAM_STAT_TASK_ABORTED status for CDB: 0x%02x,"
- " ITT: 0x%08x\n", cmd->t_task->t_task_cdb[0],
+ " ITT: 0x%08x\n", cmd->t_task.t_task_cdb[0],
cmd->se_tfo->get_task_tag(cmd));
#endif
cmd->se_tfo->queue_status(cmd);
@@ -5725,7 +5611,7 @@
int transport_generic_do_tmr(struct se_cmd *cmd)
{
struct se_cmd *ref_cmd;
- struct se_device *dev = cmd->se_lun->lun_se_dev;
+ struct se_device *dev = cmd->se_dev;
struct se_tmr_req *tmr = cmd->se_tmr_req;
int ret;
@@ -5788,9 +5674,7 @@
static void transport_processing_shutdown(struct se_device *dev)
{
struct se_cmd *cmd;
- struct se_queue_req *qr;
struct se_task *task;
- u8 state;
unsigned long flags;
/*
* Empty the struct se_device's struct se_task state list.
@@ -5803,15 +5687,9 @@
}
cmd = task->task_se_cmd;
- if (!cmd->t_task) {
- printk(KERN_ERR "cmd->t_task is NULL for task: %p cmd:"
- " %p ITT: 0x%08x\n", task, cmd,
- cmd->se_tfo->get_task_tag(cmd));
- continue;
- }
spin_unlock_irqrestore(&dev->execute_task_lock, flags);
- spin_lock_irqsave(&cmd->t_task->t_state_lock, flags);
+ spin_lock_irqsave(&cmd->t_task.t_state_lock, flags);
DEBUG_DO("PT: cmd: %p task: %p ITT/CmdSN: 0x%08x/0x%08x,"
" i_state/def_i_state: %d/%d, t_state/def_t_state:"
@@ -5819,22 +5697,22 @@
cmd->se_tfo->get_task_tag(cmd), cmd->cmd_sn,
cmd->se_tfo->get_cmd_state(cmd), cmd->deferred_i_state,
cmd->t_state, cmd->deferred_t_state,
- cmd->t_task->t_task_cdb[0]);
+ cmd->t_task.t_task_cdb[0]);
DEBUG_DO("PT: ITT[0x%08x] - t_task_cdbs: %d t_task_cdbs_left:"
" %d t_task_cdbs_sent: %d -- t_transport_active: %d"
" t_transport_stop: %d t_transport_sent: %d\n",
cmd->se_tfo->get_task_tag(cmd),
- cmd->t_task->t_task_cdbs,
- atomic_read(&cmd->t_task->t_task_cdbs_left),
- atomic_read(&cmd->t_task->t_task_cdbs_sent),
- atomic_read(&cmd->t_task->t_transport_active),
- atomic_read(&cmd->t_task->t_transport_stop),
- atomic_read(&cmd->t_task->t_transport_sent));
+ cmd->t_task.t_task_cdbs,
+ atomic_read(&cmd->t_task.t_task_cdbs_left),
+ atomic_read(&cmd->t_task.t_task_cdbs_sent),
+ atomic_read(&cmd->t_task.t_transport_active),
+ atomic_read(&cmd->t_task.t_transport_stop),
+ atomic_read(&cmd->t_task.t_transport_sent));
if (atomic_read(&task->task_active)) {
atomic_set(&task->task_stop, 1);
spin_unlock_irqrestore(
- &cmd->t_task->t_state_lock, flags);
+ &cmd->t_task.t_state_lock, flags);
DEBUG_DO("Waiting for task: %p to shutdown for dev:"
" %p\n", task, dev);
@@ -5842,8 +5720,8 @@
DEBUG_DO("Completed task: %p shutdown for dev: %p\n",
task, dev);
- spin_lock_irqsave(&cmd->t_task->t_state_lock, flags);
- atomic_dec(&cmd->t_task->t_task_cdbs_left);
+ spin_lock_irqsave(&cmd->t_task.t_state_lock, flags);
+ atomic_dec(&cmd->t_task.t_task_cdbs_left);
atomic_set(&task->task_active, 0);
atomic_set(&task->task_stop, 0);
@@ -5853,39 +5731,39 @@
}
__transport_stop_task_timer(task, &flags);
- if (!(atomic_dec_and_test(&cmd->t_task->t_task_cdbs_ex_left))) {
+ if (!(atomic_dec_and_test(&cmd->t_task.t_task_cdbs_ex_left))) {
spin_unlock_irqrestore(
- &cmd->t_task->t_state_lock, flags);
+ &cmd->t_task.t_state_lock, flags);
DEBUG_DO("Skipping task: %p, dev: %p for"
" t_task_cdbs_ex_left: %d\n", task, dev,
- atomic_read(&cmd->t_task->t_task_cdbs_ex_left));
+ atomic_read(&cmd->t_task.t_task_cdbs_ex_left));
spin_lock_irqsave(&dev->execute_task_lock, flags);
continue;
}
- if (atomic_read(&cmd->t_task->t_transport_active)) {
+ if (atomic_read(&cmd->t_task.t_transport_active)) {
DEBUG_DO("got t_transport_active = 1 for task: %p, dev:"
" %p\n", task, dev);
- if (atomic_read(&cmd->t_task->t_fe_count)) {
+ if (atomic_read(&cmd->t_task.t_fe_count)) {
spin_unlock_irqrestore(
- &cmd->t_task->t_state_lock, flags);
+ &cmd->t_task.t_state_lock, flags);
transport_send_check_condition_and_sense(
cmd, TCM_LOGICAL_UNIT_COMMUNICATION_FAILURE,
0);
transport_remove_cmd_from_queue(cmd,
- &cmd->se_lun->lun_se_dev->dev_queue_obj);
+ &cmd->se_dev->dev_queue_obj);
transport_lun_remove_cmd(cmd);
transport_cmd_check_stop(cmd, 1, 0);
} else {
spin_unlock_irqrestore(
- &cmd->t_task->t_state_lock, flags);
+ &cmd->t_task.t_state_lock, flags);
transport_remove_cmd_from_queue(cmd,
- &cmd->se_lun->lun_se_dev->dev_queue_obj);
+ &cmd->se_dev->dev_queue_obj);
transport_lun_remove_cmd(cmd);
@@ -5899,22 +5777,22 @@
DEBUG_DO("Got t_transport_active = 0 for task: %p, dev: %p\n",
task, dev);
- if (atomic_read(&cmd->t_task->t_fe_count)) {
+ if (atomic_read(&cmd->t_task.t_fe_count)) {
spin_unlock_irqrestore(
- &cmd->t_task->t_state_lock, flags);
+ &cmd->t_task.t_state_lock, flags);
transport_send_check_condition_and_sense(cmd,
TCM_LOGICAL_UNIT_COMMUNICATION_FAILURE, 0);
transport_remove_cmd_from_queue(cmd,
- &cmd->se_lun->lun_se_dev->dev_queue_obj);
+ &cmd->se_dev->dev_queue_obj);
transport_lun_remove_cmd(cmd);
transport_cmd_check_stop(cmd, 1, 0);
} else {
spin_unlock_irqrestore(
- &cmd->t_task->t_state_lock, flags);
+ &cmd->t_task.t_state_lock, flags);
transport_remove_cmd_from_queue(cmd,
- &cmd->se_lun->lun_se_dev->dev_queue_obj);
+ &cmd->se_dev->dev_queue_obj);
transport_lun_remove_cmd(cmd);
if (transport_cmd_check_stop(cmd, 1, 0))
@@ -5927,15 +5805,12 @@
/*
* Empty the struct se_device's struct se_cmd list.
*/
- while ((qr = transport_get_qr_from_queue(&dev->dev_queue_obj))) {
- cmd = qr->cmd;
- state = qr->state;
- kfree(qr);
+ while ((cmd = transport_get_cmd_from_queue(&dev->dev_queue_obj))) {
DEBUG_DO("From Device Queue: cmd: %p t_state: %d\n",
- cmd, state);
+ cmd, cmd->t_state);
- if (atomic_read(&cmd->t_task->t_fe_count)) {
+ if (atomic_read(&cmd->t_task.t_fe_count)) {
transport_send_check_condition_and_sense(cmd,
TCM_LOGICAL_UNIT_COMMUNICATION_FAILURE, 0);
@@ -5955,10 +5830,9 @@
*/
static int transport_processing_thread(void *param)
{
- int ret, t_state;
+ int ret;
struct se_cmd *cmd;
struct se_device *dev = (struct se_device *) param;
- struct se_queue_req *qr;
set_user_nice(current, -20);
@@ -5980,15 +5854,11 @@
get_cmd:
__transport_execute_tasks(dev);
- qr = transport_get_qr_from_queue(&dev->dev_queue_obj);
- if (!(qr))
+ cmd = transport_get_cmd_from_queue(&dev->dev_queue_obj);
+ if (!cmd)
continue;
- cmd = qr->cmd;
- t_state = qr->state;
- kfree(qr);
-
- switch (t_state) {
+ switch (cmd->t_state) {
case TRANSPORT_NEW_CMD_MAP:
if (!(cmd->se_tfo->new_cmd_map)) {
printk(KERN_ERR "cmd->se_tfo->new_cmd_map is"
@@ -6039,7 +5909,7 @@
default:
printk(KERN_ERR "Unknown t_state: %d deferred_t_state:"
" %d for ITT: 0x%08x i_state: %d on SE LUN:"
- " %u\n", t_state, cmd->deferred_t_state,
+ " %u\n", cmd->t_state, cmd->deferred_t_state,
cmd->se_tfo->get_task_tag(cmd),
cmd->se_tfo->get_cmd_state(cmd),
cmd->se_lun->unpacked_lun);