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linux-2.6/drivers/scsi/aic94xx/aic94xx_tmf.c
Darrick J. Wong 8fdcf86af6 [SCSI] aic94xx: asd_clear_nexus should fail if the cleared task does not complete 
Every so often, the driver will call asd_clear_nexus to clean out a task.
It is supposed to be the case that the CLEAR NEXUS does not go on the done
list until after the task itself has been put on the done list, but for
some reason this doesn't always happen.  Thus, the
wait_for_completion_timeout call times out, and we return success.  This
makes libsas free the task even though the task hasn't completed, leading
to a BUG_ON message from aic94xx_hwi.c around line 341.  We should return
failure from asd_clear_nexus so that libsas tries again; at a bare minimum
it shouldn't be freeing active tasks.  I _think_ this will fix one of
the SCB timeout crash problems (though I've not been able to reproduce
it lately...)

Signed-off-by: Darrick J. Wong <djwong@us.ibm.com>
Signed-off-by: James Bottomley <James.Bottomley@SteelEye.com>
2007-05-22 14:12:45 -05:00

641 lines
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/*
* Aic94xx Task Management Functions
*
* Copyright (C) 2005 Adaptec, Inc. All rights reserved.
* Copyright (C) 2005 Luben Tuikov <luben_tuikov@adaptec.com>
*
* This file is licensed under GPLv2.
*
* This file is part of the aic94xx driver.
*
* The aic94xx driver is free software; you can redistribute it and/or
* modify it under the terms of the GNU General Public License as
* published by the Free Software Foundation; version 2 of the
* License.
*
* The aic94xx driver is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
* General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with the aic94xx driver; if not, write to the Free Software
* Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
*
*/
#include <linux/spinlock.h>
#include "aic94xx.h"
#include "aic94xx_sas.h"
#include "aic94xx_hwi.h"
/* ---------- Internal enqueue ---------- */
static int asd_enqueue_internal(struct asd_ascb *ascb,
void (*tasklet_complete)(struct asd_ascb *,
struct done_list_struct *),
void (*timed_out)(unsigned long))
{
int res;
ascb->tasklet_complete = tasklet_complete;
ascb->uldd_timer = 1;
ascb->timer.data = (unsigned long) ascb;
ascb->timer.function = timed_out;
ascb->timer.expires = jiffies + AIC94XX_SCB_TIMEOUT;
add_timer(&ascb->timer);
res = asd_post_ascb_list(ascb->ha, ascb, 1);
if (unlikely(res))
del_timer(&ascb->timer);
return res;
}
static inline void asd_timedout_common(unsigned long data)
{
struct asd_ascb *ascb = (void *) data;
struct asd_seq_data *seq = &ascb->ha->seq;
unsigned long flags;
spin_lock_irqsave(&seq->pend_q_lock, flags);
seq->pending--;
list_del_init(&ascb->list);
spin_unlock_irqrestore(&seq->pend_q_lock, flags);
}
/* ---------- CLEAR NEXUS ---------- */
static void asd_clear_nexus_tasklet_complete(struct asd_ascb *ascb,
struct done_list_struct *dl)
{
ASD_DPRINTK("%s: here\n", __FUNCTION__);
if (!del_timer(&ascb->timer)) {
ASD_DPRINTK("%s: couldn't delete timer\n", __FUNCTION__);
return;
}
ASD_DPRINTK("%s: opcode: 0x%x\n", __FUNCTION__, dl->opcode);
ascb->uldd_task = (void *) (unsigned long) dl->opcode;
complete(&ascb->completion);
}
static void asd_clear_nexus_timedout(unsigned long data)
{
struct asd_ascb *ascb = (void *) data;
ASD_DPRINTK("%s: here\n", __FUNCTION__);
asd_timedout_common(data);
ascb->uldd_task = (void *) TMF_RESP_FUNC_FAILED;
complete(&ascb->completion);
}
#define CLEAR_NEXUS_PRE \
ASD_DPRINTK("%s: PRE\n", __FUNCTION__); \
res = 1; \
ascb = asd_ascb_alloc_list(asd_ha, &res, GFP_KERNEL); \
if (!ascb) \
return -ENOMEM; \
\
scb = ascb->scb; \
scb->header.opcode = CLEAR_NEXUS
#define CLEAR_NEXUS_POST \
ASD_DPRINTK("%s: POST\n", __FUNCTION__); \
res = asd_enqueue_internal(ascb, asd_clear_nexus_tasklet_complete, \
asd_clear_nexus_timedout); \
if (res) \
goto out_err; \
ASD_DPRINTK("%s: clear nexus posted, waiting...\n", __FUNCTION__); \
wait_for_completion(&ascb->completion); \
res = (int) (unsigned long) ascb->uldd_task; \
if (res == TC_NO_ERROR) \
res = TMF_RESP_FUNC_COMPLETE; \
out_err: \
asd_ascb_free(ascb); \
return res
int asd_clear_nexus_ha(struct sas_ha_struct *sas_ha)
{
struct asd_ha_struct *asd_ha = sas_ha->lldd_ha;
struct asd_ascb *ascb;
struct scb *scb;
int res;
CLEAR_NEXUS_PRE;
scb->clear_nexus.nexus = NEXUS_ADAPTER;
CLEAR_NEXUS_POST;
}
int asd_clear_nexus_port(struct asd_sas_port *port)
{
struct asd_ha_struct *asd_ha = port->ha->lldd_ha;
struct asd_ascb *ascb;
struct scb *scb;
int res;
CLEAR_NEXUS_PRE;
scb->clear_nexus.nexus = NEXUS_PORT;
scb->clear_nexus.conn_mask = port->phy_mask;
CLEAR_NEXUS_POST;
}
#if 0
static int asd_clear_nexus_I_T(struct domain_device *dev)
{
struct asd_ha_struct *asd_ha = dev->port->ha->lldd_ha;
struct asd_ascb *ascb;
struct scb *scb;
int res;
CLEAR_NEXUS_PRE;
scb->clear_nexus.nexus = NEXUS_I_T;
scb->clear_nexus.flags = SEND_Q | EXEC_Q | NOTINQ;
if (dev->tproto)
scb->clear_nexus.flags |= SUSPEND_TX;
scb->clear_nexus.conn_handle = cpu_to_le16((u16)(unsigned long)
dev->lldd_dev);
CLEAR_NEXUS_POST;
}
#endif
static int asd_clear_nexus_I_T_L(struct domain_device *dev, u8 *lun)
{
struct asd_ha_struct *asd_ha = dev->port->ha->lldd_ha;
struct asd_ascb *ascb;
struct scb *scb;
int res;
CLEAR_NEXUS_PRE;
scb->clear_nexus.nexus = NEXUS_I_T_L;
scb->clear_nexus.flags = SEND_Q | EXEC_Q | NOTINQ;
if (dev->tproto)
scb->clear_nexus.flags |= SUSPEND_TX;
memcpy(scb->clear_nexus.ssp_task.lun, lun, 8);
scb->clear_nexus.conn_handle = cpu_to_le16((u16)(unsigned long)
dev->lldd_dev);
CLEAR_NEXUS_POST;
}
static int asd_clear_nexus_tag(struct sas_task *task)
{
struct asd_ha_struct *asd_ha = task->dev->port->ha->lldd_ha;
struct asd_ascb *tascb = task->lldd_task;
struct asd_ascb *ascb;
struct scb *scb;
int res;
CLEAR_NEXUS_PRE;
scb->clear_nexus.nexus = NEXUS_TAG;
memcpy(scb->clear_nexus.ssp_task.lun, task->ssp_task.LUN, 8);
scb->clear_nexus.ssp_task.tag = tascb->tag;
if (task->dev->tproto)
scb->clear_nexus.conn_handle = cpu_to_le16((u16)(unsigned long)
task->dev->lldd_dev);
CLEAR_NEXUS_POST;
}
static int asd_clear_nexus_index(struct sas_task *task)
{
struct asd_ha_struct *asd_ha = task->dev->port->ha->lldd_ha;
struct asd_ascb *tascb = task->lldd_task;
struct asd_ascb *ascb;
struct scb *scb;
int res;
CLEAR_NEXUS_PRE;
scb->clear_nexus.nexus = NEXUS_TRANS_CX;
if (task->dev->tproto)
scb->clear_nexus.conn_handle = cpu_to_le16((u16)(unsigned long)
task->dev->lldd_dev);
scb->clear_nexus.index = cpu_to_le16(tascb->tc_index);
CLEAR_NEXUS_POST;
}
/* ---------- TMFs ---------- */
static void asd_tmf_timedout(unsigned long data)
{
struct asd_ascb *ascb = (void *) data;
ASD_DPRINTK("tmf timed out\n");
asd_timedout_common(data);
ascb->uldd_task = (void *) TMF_RESP_FUNC_FAILED;
complete(&ascb->completion);
}
static int asd_get_tmf_resp_tasklet(struct asd_ascb *ascb,
struct done_list_struct *dl)
{
struct asd_ha_struct *asd_ha = ascb->ha;
unsigned long flags;
struct tc_resp_sb_struct {
__le16 index_escb;
u8 len_lsb;
u8 flags;
} __attribute__ ((packed)) *resp_sb = (void *) dl->status_block;
int edb_id = ((resp_sb->flags & 0x70) >> 4)-1;
struct asd_ascb *escb;
struct asd_dma_tok *edb;
struct ssp_frame_hdr *fh;
struct ssp_response_iu *ru;
int res = TMF_RESP_FUNC_FAILED;
ASD_DPRINTK("tmf resp tasklet\n");
spin_lock_irqsave(&asd_ha->seq.tc_index_lock, flags);
escb = asd_tc_index_find(&asd_ha->seq,
(int)le16_to_cpu(resp_sb->index_escb));
spin_unlock_irqrestore(&asd_ha->seq.tc_index_lock, flags);
if (!escb) {
ASD_DPRINTK("Uh-oh! No escb for this dl?!\n");
return res;
}
edb = asd_ha->seq.edb_arr[edb_id + escb->edb_index];
ascb->tag = *(__be16 *)(edb->vaddr+4);
fh = edb->vaddr + 16;
ru = edb->vaddr + 16 + sizeof(*fh);
res = ru->status;
if (ru->datapres == 1) /* Response data present */
res = ru->resp_data[3];
#if 0
ascb->tag = fh->tag;
#endif
ascb->tag_valid = 1;
asd_invalidate_edb(escb, edb_id);
return res;
}
static void asd_tmf_tasklet_complete(struct asd_ascb *ascb,
struct done_list_struct *dl)
{
if (!del_timer(&ascb->timer))
return;
ASD_DPRINTK("tmf tasklet complete\n");
if (dl->opcode == TC_SSP_RESP)
ascb->uldd_task = (void *) (unsigned long)
asd_get_tmf_resp_tasklet(ascb, dl);
else
ascb->uldd_task = (void *) 0xFF00 + (unsigned long) dl->opcode;
complete(&ascb->completion);
}
static inline int asd_clear_nexus(struct sas_task *task)
{
int res = TMF_RESP_FUNC_FAILED;
int leftover;
struct asd_ascb *tascb = task->lldd_task;
unsigned long flags;
ASD_DPRINTK("task not done, clearing nexus\n");
if (tascb->tag_valid)
res = asd_clear_nexus_tag(task);
else
res = asd_clear_nexus_index(task);
leftover = wait_for_completion_timeout(&tascb->completion,
AIC94XX_SCB_TIMEOUT);
ASD_DPRINTK("came back from clear nexus\n");
spin_lock_irqsave(&task->task_state_lock, flags);
if (leftover < 1)
res = TMF_RESP_FUNC_FAILED;
if (task->task_state_flags & SAS_TASK_STATE_DONE)
res = TMF_RESP_FUNC_COMPLETE;
spin_unlock_irqrestore(&task->task_state_lock, flags);
return res;
}
/**
* asd_abort_task -- ABORT TASK TMF
* @task: the task to be aborted
*
* Before calling ABORT TASK the task state flags should be ORed with
* SAS_TASK_STATE_ABORTED (unless SAS_TASK_STATE_DONE is set) under
* the task_state_lock IRQ spinlock, then ABORT TASK *must* be called.
*
* Implements the ABORT TASK TMF, I_T_L_Q nexus.
* Returns: SAS TMF responses (see sas_task.h),
* -ENOMEM,
* -SAS_QUEUE_FULL.
*
* When ABORT TASK returns, the caller of ABORT TASK checks first the
* task->task_state_flags, and then the return value of ABORT TASK.
*
* If the task has task state bit SAS_TASK_STATE_DONE set, then the
* task was completed successfully prior to it being aborted. The
* caller of ABORT TASK has responsibility to call task->task_done()
* xor free the task, depending on their framework. The return code
* is TMF_RESP_FUNC_FAILED in this case.
*
* Else the SAS_TASK_STATE_DONE bit is not set,
* If the return code is TMF_RESP_FUNC_COMPLETE, then
* the task was aborted successfully. The caller of
* ABORT TASK has responsibility to call task->task_done()
* to finish the task, xor free the task depending on their
* framework.
* else
* the ABORT TASK returned some kind of error. The task
* was _not_ cancelled. Nothing can be assumed.
* The caller of ABORT TASK may wish to retry.
*/
int asd_abort_task(struct sas_task *task)
{
struct asd_ascb *tascb = task->lldd_task;
struct asd_ha_struct *asd_ha = tascb->ha;
int res = 1;
unsigned long flags;
struct asd_ascb *ascb = NULL;
struct scb *scb;
int leftover;
spin_lock_irqsave(&task->task_state_lock, flags);
if (task->task_state_flags & SAS_TASK_STATE_DONE) {
spin_unlock_irqrestore(&task->task_state_lock, flags);
res = TMF_RESP_FUNC_COMPLETE;
ASD_DPRINTK("%s: task 0x%p done\n", __FUNCTION__, task);
goto out_done;
}
spin_unlock_irqrestore(&task->task_state_lock, flags);
ascb = asd_ascb_alloc_list(asd_ha, &res, GFP_KERNEL);
if (!ascb)
return -ENOMEM;
scb = ascb->scb;
scb->header.opcode = ABORT_TASK;
switch (task->task_proto) {
case SATA_PROTO:
case SAS_PROTO_STP:
scb->abort_task.proto_conn_rate = (1 << 5); /* STP */
break;
case SAS_PROTO_SSP:
scb->abort_task.proto_conn_rate = (1 << 4); /* SSP */
scb->abort_task.proto_conn_rate |= task->dev->linkrate;
break;
case SAS_PROTO_SMP:
break;
default:
break;
}
if (task->task_proto == SAS_PROTO_SSP) {
scb->abort_task.ssp_frame.frame_type = SSP_TASK;
memcpy(scb->abort_task.ssp_frame.hashed_dest_addr,
task->dev->hashed_sas_addr, HASHED_SAS_ADDR_SIZE);
memcpy(scb->abort_task.ssp_frame.hashed_src_addr,
task->dev->port->ha->hashed_sas_addr,
HASHED_SAS_ADDR_SIZE);
scb->abort_task.ssp_frame.tptt = cpu_to_be16(0xFFFF);
memcpy(scb->abort_task.ssp_task.lun, task->ssp_task.LUN, 8);
scb->abort_task.ssp_task.tmf = TMF_ABORT_TASK;
scb->abort_task.ssp_task.tag = cpu_to_be16(0xFFFF);
}
scb->abort_task.sister_scb = cpu_to_le16(0xFFFF);
scb->abort_task.conn_handle = cpu_to_le16(
(u16)(unsigned long)task->dev->lldd_dev);
scb->abort_task.retry_count = 1;
scb->abort_task.index = cpu_to_le16((u16)tascb->tc_index);
scb->abort_task.itnl_to = cpu_to_le16(ITNL_TIMEOUT_CONST);
res = asd_enqueue_internal(ascb, asd_tmf_tasklet_complete,
asd_tmf_timedout);
if (res)
goto out;
wait_for_completion(&ascb->completion);
ASD_DPRINTK("tmf came back\n");
res = (int) (unsigned long) ascb->uldd_task;
tascb->tag = ascb->tag;
tascb->tag_valid = ascb->tag_valid;
spin_lock_irqsave(&task->task_state_lock, flags);
if (task->task_state_flags & SAS_TASK_STATE_DONE) {
spin_unlock_irqrestore(&task->task_state_lock, flags);
res = TMF_RESP_FUNC_COMPLETE;
ASD_DPRINTK("%s: task 0x%p done\n", __FUNCTION__, task);
goto out_done;
}
spin_unlock_irqrestore(&task->task_state_lock, flags);
switch (res) {
/* The task to be aborted has been sent to the device.
* We got a Response IU for the ABORT TASK TMF. */
case TC_NO_ERROR + 0xFF00:
case TMF_RESP_FUNC_COMPLETE:
case TMF_RESP_FUNC_FAILED:
res = asd_clear_nexus(task);
break;
case TMF_RESP_INVALID_FRAME:
case TMF_RESP_OVERLAPPED_TAG:
case TMF_RESP_FUNC_ESUPP:
case TMF_RESP_NO_LUN:
goto out_done; break;
}
/* In the following we assume that the managing layer
* will _never_ make a mistake, when issuing ABORT TASK.
*/
switch (res) {
default:
res = asd_clear_nexus(task);
/* fallthrough */
case TC_NO_ERROR + 0xFF00:
case TMF_RESP_FUNC_COMPLETE:
break;
/* The task hasn't been sent to the device xor we never got
* a (sane) Response IU for the ABORT TASK TMF.
*/
case TF_NAK_RECV + 0xFF00:
res = TMF_RESP_INVALID_FRAME;
break;
case TF_TMF_TASK_DONE + 0xFF00: /* done but not reported yet */
res = TMF_RESP_FUNC_FAILED;
leftover = wait_for_completion_timeout(&tascb->completion,
AIC94XX_SCB_TIMEOUT);
spin_lock_irqsave(&task->task_state_lock, flags);
if (leftover < 1)
res = TMF_RESP_FUNC_FAILED;
if (task->task_state_flags & SAS_TASK_STATE_DONE)
res = TMF_RESP_FUNC_COMPLETE;
spin_unlock_irqrestore(&task->task_state_lock, flags);
goto out_done;
case TF_TMF_NO_TAG + 0xFF00:
case TF_TMF_TAG_FREE + 0xFF00: /* the tag is in the free list */
case TF_TMF_NO_CONN_HANDLE + 0xFF00: /* no such device */
res = TMF_RESP_FUNC_COMPLETE;
goto out_done;
case TF_TMF_NO_CTX + 0xFF00: /* not in seq, or proto != SSP */
res = TMF_RESP_FUNC_ESUPP;
goto out;
}
out_done:
if (res == TMF_RESP_FUNC_COMPLETE) {
task->lldd_task = NULL;
mb();
asd_ascb_free(tascb);
}
out:
asd_ascb_free(ascb);
ASD_DPRINTK("task 0x%p aborted, res: 0x%x\n", task, res);
return res;
}
/**
* asd_initiate_ssp_tmf -- send a TMF to an I_T_L or I_T_L_Q nexus
* @dev: pointer to struct domain_device of interest
* @lun: pointer to u8[8] which is the LUN
* @tmf: the TMF to be performed (see sas_task.h or the SAS spec)
* @index: the transaction context of the task to be queried if QT TMF
*
* This function is used to send ABORT TASK SET, CLEAR ACA,
* CLEAR TASK SET, LU RESET and QUERY TASK TMFs.
*
* No SCBs should be queued to the I_T_L nexus when this SCB is
* pending.
*
* Returns: TMF response code (see sas_task.h or the SAS spec)
*/
static int asd_initiate_ssp_tmf(struct domain_device *dev, u8 *lun,
int tmf, int index)
{
struct asd_ha_struct *asd_ha = dev->port->ha->lldd_ha;
struct asd_ascb *ascb;
int res = 1;
struct scb *scb;
if (!(dev->tproto & SAS_PROTO_SSP))
return TMF_RESP_FUNC_ESUPP;
ascb = asd_ascb_alloc_list(asd_ha, &res, GFP_KERNEL);
if (!ascb)
return -ENOMEM;
scb = ascb->scb;
if (tmf == TMF_QUERY_TASK)
scb->header.opcode = QUERY_SSP_TASK;
else
scb->header.opcode = INITIATE_SSP_TMF;
scb->ssp_tmf.proto_conn_rate = (1 << 4); /* SSP */
scb->ssp_tmf.proto_conn_rate |= dev->linkrate;
/* SSP frame header */
scb->ssp_tmf.ssp_frame.frame_type = SSP_TASK;
memcpy(scb->ssp_tmf.ssp_frame.hashed_dest_addr,
dev->hashed_sas_addr, HASHED_SAS_ADDR_SIZE);
memcpy(scb->ssp_tmf.ssp_frame.hashed_src_addr,
dev->port->ha->hashed_sas_addr, HASHED_SAS_ADDR_SIZE);
scb->ssp_tmf.ssp_frame.tptt = cpu_to_be16(0xFFFF);
/* SSP Task IU */
memcpy(scb->ssp_tmf.ssp_task.lun, lun, 8);
scb->ssp_tmf.ssp_task.tmf = tmf;
scb->ssp_tmf.sister_scb = cpu_to_le16(0xFFFF);
scb->ssp_tmf.conn_handle= cpu_to_le16((u16)(unsigned long)
dev->lldd_dev);
scb->ssp_tmf.retry_count = 1;
scb->ssp_tmf.itnl_to = cpu_to_le16(ITNL_TIMEOUT_CONST);
if (tmf == TMF_QUERY_TASK)
scb->ssp_tmf.index = cpu_to_le16(index);
res = asd_enqueue_internal(ascb, asd_tmf_tasklet_complete,
asd_tmf_timedout);
if (res)
goto out_err;
wait_for_completion(&ascb->completion);
res = (int) (unsigned long) ascb->uldd_task;
switch (res) {
case TC_NO_ERROR + 0xFF00:
res = TMF_RESP_FUNC_COMPLETE;
break;
case TF_NAK_RECV + 0xFF00:
res = TMF_RESP_INVALID_FRAME;
break;
case TF_TMF_TASK_DONE + 0xFF00:
res = TMF_RESP_FUNC_FAILED;
break;
case TF_TMF_NO_TAG + 0xFF00:
case TF_TMF_TAG_FREE + 0xFF00: /* the tag is in the free list */
case TF_TMF_NO_CONN_HANDLE + 0xFF00: /* no such device */
res = TMF_RESP_FUNC_COMPLETE;
break;
case TF_TMF_NO_CTX + 0xFF00: /* not in seq, or proto != SSP */
res = TMF_RESP_FUNC_ESUPP;
break;
default:
/* Allow TMF response codes to propagate upwards */
break;
}
out_err:
asd_ascb_free(ascb);
return res;
}
int asd_abort_task_set(struct domain_device *dev, u8 *lun)
{
int res = asd_initiate_ssp_tmf(dev, lun, TMF_ABORT_TASK_SET, 0);
if (res == TMF_RESP_FUNC_COMPLETE)
asd_clear_nexus_I_T_L(dev, lun);
return res;
}
int asd_clear_aca(struct domain_device *dev, u8 *lun)
{
int res = asd_initiate_ssp_tmf(dev, lun, TMF_CLEAR_ACA, 0);
if (res == TMF_RESP_FUNC_COMPLETE)
asd_clear_nexus_I_T_L(dev, lun);
return res;
}
int asd_clear_task_set(struct domain_device *dev, u8 *lun)
{
int res = asd_initiate_ssp_tmf(dev, lun, TMF_CLEAR_TASK_SET, 0);
if (res == TMF_RESP_FUNC_COMPLETE)
asd_clear_nexus_I_T_L(dev, lun);
return res;
}
int asd_lu_reset(struct domain_device *dev, u8 *lun)
{
int res = asd_initiate_ssp_tmf(dev, lun, TMF_LU_RESET, 0);
if (res == TMF_RESP_FUNC_COMPLETE)
asd_clear_nexus_I_T_L(dev, lun);
return res;
}
/**
* asd_query_task -- send a QUERY TASK TMF to an I_T_L_Q nexus
* task: pointer to sas_task struct of interest
*
* Returns: TMF_RESP_FUNC_COMPLETE if the task is not in the task set,
* or TMF_RESP_FUNC_SUCC if the task is in the task set.
*
* Normally the management layer sets the task to aborted state,
* and then calls query task and then abort task.
*/
int asd_query_task(struct sas_task *task)
{
struct asd_ascb *ascb = task->lldd_task;
int index;
if (ascb) {
index = ascb->tc_index;
return asd_initiate_ssp_tmf(task->dev, task->ssp_task.LUN,
TMF_QUERY_TASK, index);
}
return TMF_RESP_FUNC_COMPLETE;
}
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