2 * Copyright (c) 2010 Cisco Systems, Inc.
4 * This program is free software; you can redistribute it and/or modify it
5 * under the terms and conditions of the GNU General Public License,
6 * version 2, as published by the Free Software Foundation.
8 * This program is distributed in the hope it will be useful, but WITHOUT
9 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
10 * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for
13 * You should have received a copy of the GNU General Public License along with
14 * this program; if not, write to the Free Software Foundation, Inc.,
15 * 51 Franklin St - Fifth Floor, Boston, MA 02110-1301 USA.
18 /* XXX TBD some includes may be extraneous */
20 #include <linux/module.h>
21 #include <linux/moduleparam.h>
22 #include <linux/version.h>
23 #include <generated/utsrelease.h>
24 #include <linux/utsname.h>
25 #include <linux/init.h>
26 #include <linux/slab.h>
27 #include <linux/kthread.h>
28 #include <linux/types.h>
29 #include <linux/string.h>
30 #include <linux/configfs.h>
31 #include <linux/ctype.h>
32 #include <linux/hash.h>
33 #include <asm/unaligned.h>
34 #include <scsi/scsi.h>
35 #include <scsi/scsi_host.h>
36 #include <scsi/scsi_device.h>
37 #include <scsi/scsi_cmnd.h>
38 #include <scsi/scsi_tcq.h>
39 #include <scsi/libfc.h>
40 #include <scsi/fc_encode.h>
42 #include <target/target_core_base.h>
43 #include <target/target_core_transport.h>
44 #include <target/target_core_fabric_ops.h>
45 #include <target/target_core_device.h>
46 #include <target/target_core_tpg.h>
47 #include <target/target_core_configfs.h>
48 #include <target/target_core_base.h>
49 #include <target/target_core_tmr.h>
50 #include <target/configfs_macros.h>
55 * Dump cmd state for debugging.
57 void ft_dump_cmd(struct ft_cmd
*cmd
, const char *caller
)
61 struct se_cmd
*se_cmd
;
64 if (!(ft_debug_logging
& FT_DEBUG_IO
))
67 se_cmd
= &cmd
->se_cmd
;
68 printk(KERN_INFO
"%s: cmd %p state %d sess %p seq %p se_cmd %p\n",
69 caller
, cmd
, cmd
->state
, cmd
->sess
, cmd
->seq
, se_cmd
);
70 printk(KERN_INFO
"%s: cmd %p cdb %p\n",
71 caller
, cmd
, cmd
->cdb
);
72 printk(KERN_INFO
"%s: cmd %p lun %d\n", caller
, cmd
, cmd
->lun
);
74 printk(KERN_INFO
"%s: cmd %p se_num %u buf %p len %u se_cmd_flags <0x%x>\n",
75 caller
, cmd
, se_cmd
->t_tasks_se_num
,
76 se_cmd
->t_task_buf
, se_cmd
->data_length
, se_cmd
->se_cmd_flags
);
78 list_for_each_entry(mem
, &se_cmd
->t_mem_list
, se_list
)
79 printk(KERN_INFO
"%s: cmd %p mem %p page %p "
80 "len 0x%x off 0x%x\n",
82 mem
->se_page
, mem
->se_len
, mem
->se_off
);
86 printk(KERN_INFO
"%s: cmd %p sid %x did %x "
87 "ox_id %x rx_id %x seq_id %x e_stat %x\n",
88 caller
, cmd
, ep
->sid
, ep
->did
, ep
->oxid
, ep
->rxid
,
89 sp
->id
, ep
->esb_stat
);
91 print_hex_dump(KERN_INFO
, "ft_dump_cmd ", DUMP_PREFIX_NONE
,
92 16, 4, cmd
->cdb
, MAX_COMMAND_SIZE
, 0);
95 static void ft_queue_cmd(struct ft_sess
*sess
, struct ft_cmd
*cmd
)
97 struct se_queue_obj
*qobj
;
100 qobj
= &sess
->tport
->tpg
->qobj
;
101 spin_lock_irqsave(&qobj
->cmd_queue_lock
, flags
);
102 list_add_tail(&cmd
->se_req
.qr_list
, &qobj
->qobj_list
);
103 spin_unlock_irqrestore(&qobj
->cmd_queue_lock
, flags
);
104 atomic_inc(&qobj
->queue_cnt
);
105 wake_up_interruptible(&qobj
->thread_wq
);
108 static struct ft_cmd
*ft_dequeue_cmd(struct se_queue_obj
*qobj
)
111 struct se_queue_req
*qr
;
113 spin_lock_irqsave(&qobj
->cmd_queue_lock
, flags
);
114 if (list_empty(&qobj
->qobj_list
)) {
115 spin_unlock_irqrestore(&qobj
->cmd_queue_lock
, flags
);
118 qr
= list_first_entry(&qobj
->qobj_list
, struct se_queue_req
, qr_list
);
119 list_del(&qr
->qr_list
);
120 atomic_dec(&qobj
->queue_cnt
);
121 spin_unlock_irqrestore(&qobj
->cmd_queue_lock
, flags
);
122 return container_of(qr
, struct ft_cmd
, se_req
);
125 static void ft_free_cmd(struct ft_cmd
*cmd
)
128 struct fc_lport
*lport
;
135 lport
->tt
.seq_release(fr_seq(fp
));
137 ft_sess_put(cmd
->sess
); /* undo get from lookup at recv */
141 void ft_release_cmd(struct se_cmd
*se_cmd
)
143 struct ft_cmd
*cmd
= container_of(se_cmd
, struct ft_cmd
, se_cmd
);
148 void ft_check_stop_free(struct se_cmd
*se_cmd
)
150 transport_generic_free_cmd(se_cmd
, 0, 1, 0);
156 int ft_queue_status(struct se_cmd
*se_cmd
)
158 struct ft_cmd
*cmd
= container_of(se_cmd
, struct ft_cmd
, se_cmd
);
160 struct fcp_resp_with_ext
*fcp
;
161 struct fc_lport
*lport
;
165 ft_dump_cmd(cmd
, __func__
);
166 ep
= fc_seq_exch(cmd
->seq
);
168 len
= sizeof(*fcp
) + se_cmd
->scsi_sense_length
;
169 fp
= fc_frame_alloc(lport
, len
);
171 /* XXX shouldn't just drop it - requeue and retry? */
174 fcp
= fc_frame_payload_get(fp
, len
);
176 fcp
->resp
.fr_status
= se_cmd
->scsi_status
;
178 len
= se_cmd
->scsi_sense_length
;
180 fcp
->resp
.fr_flags
|= FCP_SNS_LEN_VAL
;
181 fcp
->ext
.fr_sns_len
= htonl(len
);
182 memcpy((fcp
+ 1), se_cmd
->sense_buffer
, len
);
186 * Test underflow and overflow with one mask. Usually both are off.
187 * Bidirectional commands are not handled yet.
189 if (se_cmd
->se_cmd_flags
& (SCF_OVERFLOW_BIT
| SCF_UNDERFLOW_BIT
)) {
190 if (se_cmd
->se_cmd_flags
& SCF_OVERFLOW_BIT
)
191 fcp
->resp
.fr_flags
|= FCP_RESID_OVER
;
193 fcp
->resp
.fr_flags
|= FCP_RESID_UNDER
;
194 fcp
->ext
.fr_resid
= cpu_to_be32(se_cmd
->residual_count
);
200 cmd
->seq
= lport
->tt
.seq_start_next(cmd
->seq
);
201 fc_fill_fc_hdr(fp
, FC_RCTL_DD_CMD_STATUS
, ep
->did
, ep
->sid
, FC_TYPE_FCP
,
202 FC_FC_EX_CTX
| FC_FC_LAST_SEQ
| FC_FC_END_SEQ
, 0);
204 lport
->tt
.seq_send(lport
, cmd
->seq
, fp
);
205 lport
->tt
.exch_done(cmd
->seq
);
209 int ft_write_pending_status(struct se_cmd
*se_cmd
)
211 struct ft_cmd
*cmd
= container_of(se_cmd
, struct ft_cmd
, se_cmd
);
213 return cmd
->write_data_len
!= se_cmd
->data_length
;
217 * Send TX_RDY (transfer ready).
219 int ft_write_pending(struct se_cmd
*se_cmd
)
221 struct ft_cmd
*cmd
= container_of(se_cmd
, struct ft_cmd
, se_cmd
);
223 struct fcp_txrdy
*txrdy
;
224 struct fc_lport
*lport
;
226 struct fc_frame_header
*fh
;
229 ft_dump_cmd(cmd
, __func__
);
231 ep
= fc_seq_exch(cmd
->seq
);
233 fp
= fc_frame_alloc(lport
, sizeof(*txrdy
));
235 return PYX_TRANSPORT_OUT_OF_MEMORY_RESOURCES
;
237 txrdy
= fc_frame_payload_get(fp
, sizeof(*txrdy
));
238 memset(txrdy
, 0, sizeof(*txrdy
));
239 txrdy
->ft_burst_len
= htonl(se_cmd
->data_length
);
241 cmd
->seq
= lport
->tt
.seq_start_next(cmd
->seq
);
242 fc_fill_fc_hdr(fp
, FC_RCTL_DD_DATA_DESC
, ep
->did
, ep
->sid
, FC_TYPE_FCP
,
243 FC_FC_EX_CTX
| FC_FC_END_SEQ
| FC_FC_SEQ_INIT
, 0);
245 fh
= fc_frame_header_get(fp
);
246 f_ctl
= ntoh24(fh
->fh_f_ctl
);
248 /* Only if it is 'Exchange Responder' */
249 if (f_ctl
& FC_FC_EX_CTX
) {
250 /* Target is 'exchange responder' and sending XFER_READY
251 * to 'exchange initiator (initiator)'
253 if ((ep
->xid
<= lport
->lro_xid
) &&
254 (fh
->fh_r_ctl
== FC_RCTL_DD_DATA_DESC
)) {
255 if (se_cmd
->se_cmd_flags
& SCF_SCSI_DATA_SG_IO_CDB
) {
257 * Map se_mem list to scatterlist, so that
258 * DDP can be setup. DDP setup function require
259 * scatterlist. se_mem_list is internal to
262 transport_do_task_sg_chain(se_cmd
);
263 cmd
->sg
= se_cmd
->t_tasks_sg_chained
;
265 se_cmd
->t_tasks_sg_chained_no
;
267 if (cmd
->sg
&& lport
->tt
.ddp_setup(lport
, ep
->xid
,
268 cmd
->sg
, cmd
->sg_cnt
))
269 cmd
->was_ddp_setup
= 1;
272 lport
->tt
.seq_send(lport
, cmd
->seq
, fp
);
276 u32
ft_get_task_tag(struct se_cmd
*se_cmd
)
278 struct ft_cmd
*cmd
= container_of(se_cmd
, struct ft_cmd
, se_cmd
);
280 return fc_seq_exch(cmd
->seq
)->rxid
;
283 int ft_get_cmd_state(struct se_cmd
*se_cmd
)
285 struct ft_cmd
*cmd
= container_of(se_cmd
, struct ft_cmd
, se_cmd
);
290 int ft_is_state_remove(struct se_cmd
*se_cmd
)
292 return 0; /* XXX TBD */
295 void ft_new_cmd_failure(struct se_cmd
*se_cmd
)
298 printk(KERN_INFO
"%s: se_cmd %p\n", __func__
, se_cmd
);
302 * FC sequence response handler for follow-on sequences (data) and aborts.
304 static void ft_recv_seq(struct fc_seq
*sp
, struct fc_frame
*fp
, void *arg
)
306 struct ft_cmd
*cmd
= arg
;
307 struct fc_frame_header
*fh
;
310 /* XXX need to find cmd if queued */
311 cmd
->se_cmd
.t_state
= TRANSPORT_REMOVE
;
313 transport_generic_free_cmd(&cmd
->se_cmd
, 0, 1, 0);
317 fh
= fc_frame_header_get(fp
);
319 switch (fh
->fh_r_ctl
) {
320 case FC_RCTL_DD_SOL_DATA
: /* write data */
321 ft_recv_write_data(cmd
, fp
);
323 case FC_RCTL_DD_UNSOL_CTL
: /* command */
324 case FC_RCTL_DD_SOL_CTL
: /* transfer ready */
325 case FC_RCTL_DD_DATA_DESC
: /* transfer ready */
327 printk(KERN_INFO
"%s: unhandled frame r_ctl %x\n",
328 __func__
, fh
->fh_r_ctl
);
330 transport_generic_free_cmd(&cmd
->se_cmd
, 0, 1, 0);
336 * Send a FCP response including SCSI status and optional FCP rsp_code.
337 * status is SAM_STAT_GOOD (zero) iff code is valid.
338 * This is used in error cases, such as allocation failures.
340 static void ft_send_resp_status(struct fc_lport
*lport
,
341 const struct fc_frame
*rx_fp
,
342 u32 status
, enum fcp_resp_rsp_codes code
)
346 const struct fc_frame_header
*fh
;
348 struct fcp_resp_with_ext
*fcp
;
349 struct fcp_resp_rsp_info
*info
;
351 fh
= fc_frame_header_get(rx_fp
);
352 FT_IO_DBG("FCP error response: did %x oxid %x status %x code %x\n",
353 ntoh24(fh
->fh_s_id
), ntohs(fh
->fh_ox_id
), status
, code
);
355 if (status
== SAM_STAT_GOOD
)
356 len
+= sizeof(*info
);
357 fp
= fc_frame_alloc(lport
, len
);
360 fcp
= fc_frame_payload_get(fp
, len
);
362 fcp
->resp
.fr_status
= status
;
363 if (status
== SAM_STAT_GOOD
) {
364 fcp
->ext
.fr_rsp_len
= htonl(sizeof(*info
));
365 fcp
->resp
.fr_flags
|= FCP_RSP_LEN_VAL
;
366 info
= (struct fcp_resp_rsp_info
*)(fcp
+ 1);
367 info
->rsp_code
= code
;
370 fc_fill_reply_hdr(fp
, rx_fp
, FC_RCTL_DD_CMD_STATUS
, 0);
373 lport
->tt
.seq_send(lport
, sp
, fp
);
375 lport
->tt
.frame_send(lport
, fp
);
379 * Send error or task management response.
380 * Always frees the cmd and associated state.
382 static void ft_send_resp_code(struct ft_cmd
*cmd
, enum fcp_resp_rsp_codes code
)
384 ft_send_resp_status(cmd
->sess
->tport
->lport
,
385 cmd
->req_frame
, SAM_STAT_GOOD
, code
);
390 * Handle Task Management Request.
392 static void ft_send_tm(struct ft_cmd
*cmd
)
394 struct se_tmr_req
*tmr
;
395 struct fcp_cmnd
*fcp
;
396 struct ft_sess
*sess
;
399 fcp
= fc_frame_payload_get(cmd
->req_frame
, sizeof(*fcp
));
401 switch (fcp
->fc_tm_flags
) {
402 case FCP_TMF_LUN_RESET
:
403 tm_func
= TMR_LUN_RESET
;
405 case FCP_TMF_TGT_RESET
:
406 tm_func
= TMR_TARGET_WARM_RESET
;
408 case FCP_TMF_CLR_TASK_SET
:
409 tm_func
= TMR_CLEAR_TASK_SET
;
411 case FCP_TMF_ABT_TASK_SET
:
412 tm_func
= TMR_ABORT_TASK_SET
;
414 case FCP_TMF_CLR_ACA
:
415 tm_func
= TMR_CLEAR_ACA
;
419 * FCP4r01 indicates having a combination of
420 * tm_flags set is invalid.
422 FT_TM_DBG("invalid FCP tm_flags %x\n", fcp
->fc_tm_flags
);
423 ft_send_resp_code(cmd
, FCP_CMND_FIELDS_INVALID
);
427 FT_TM_DBG("alloc tm cmd fn %d\n", tm_func
);
428 tmr
= core_tmr_alloc_req(&cmd
->se_cmd
, cmd
, tm_func
);
430 FT_TM_DBG("alloc failed\n");
431 ft_send_resp_code(cmd
, FCP_TMF_FAILED
);
434 cmd
->se_cmd
.se_tmr_req
= tmr
;
436 switch (fcp
->fc_tm_flags
) {
437 case FCP_TMF_LUN_RESET
:
438 cmd
->lun
= scsilun_to_int((struct scsi_lun
*)fcp
->fc_lun
);
439 if (transport_lookup_tmr_lun(&cmd
->se_cmd
, cmd
->lun
) < 0) {
441 * Make sure to clean up newly allocated TMR request
442 * since "unable to handle TMR request because failed
445 FT_TM_DBG("Failed to get LUN for TMR func %d, "
446 "se_cmd %p, unpacked_lun %d\n",
447 tm_func
, &cmd
->se_cmd
, cmd
->lun
);
448 ft_dump_cmd(cmd
, __func__
);
450 transport_send_check_condition_and_sense(&cmd
->se_cmd
,
451 cmd
->se_cmd
.scsi_sense_reason
, 0);
452 transport_generic_free_cmd(&cmd
->se_cmd
, 0, 1, 0);
457 case FCP_TMF_TGT_RESET
:
458 case FCP_TMF_CLR_TASK_SET
:
459 case FCP_TMF_ABT_TASK_SET
:
460 case FCP_TMF_CLR_ACA
:
465 transport_generic_handle_tmr(&cmd
->se_cmd
);
469 * Send status from completed task management request.
471 int ft_queue_tm_resp(struct se_cmd
*se_cmd
)
473 struct ft_cmd
*cmd
= container_of(se_cmd
, struct ft_cmd
, se_cmd
);
474 struct se_tmr_req
*tmr
= se_cmd
->se_tmr_req
;
475 enum fcp_resp_rsp_codes code
;
477 switch (tmr
->response
) {
478 case TMR_FUNCTION_COMPLETE
:
481 case TMR_LUN_DOES_NOT_EXIST
:
482 code
= FCP_TMF_INVALID_LUN
;
484 case TMR_FUNCTION_REJECTED
:
485 code
= FCP_TMF_REJECTED
;
487 case TMR_TASK_DOES_NOT_EXIST
:
488 case TMR_TASK_STILL_ALLEGIANT
:
489 case TMR_TASK_FAILOVER_NOT_SUPPORTED
:
490 case TMR_TASK_MGMT_FUNCTION_NOT_SUPPORTED
:
491 case TMR_FUNCTION_AUTHORIZATION_FAILED
:
493 code
= FCP_TMF_FAILED
;
496 FT_TM_DBG("tmr fn %d resp %d fcp code %d\n",
497 tmr
->function
, tmr
->response
, code
);
498 ft_send_resp_code(cmd
, code
);
503 * Handle incoming FCP command.
505 static void ft_recv_cmd(struct ft_sess
*sess
, struct fc_frame
*fp
)
508 struct fc_lport
*lport
= sess
->tport
->lport
;
510 cmd
= kzalloc(sizeof(*cmd
), GFP_ATOMIC
);
514 cmd
->seq
= lport
->tt
.seq_assign(lport
, fp
);
519 cmd
->req_frame
= fp
; /* hold frame during cmd */
520 ft_queue_cmd(sess
, cmd
);
524 FT_IO_DBG("cmd or seq allocation failure - sending BUSY\n");
525 ft_send_resp_status(lport
, fp
, SAM_STAT_BUSY
, 0);
527 ft_sess_put(sess
); /* undo get from lookup */
532 * Handle incoming FCP frame.
533 * Caller has verified that the frame is type FCP.
535 void ft_recv_req(struct ft_sess
*sess
, struct fc_frame
*fp
)
537 struct fc_frame_header
*fh
= fc_frame_header_get(fp
);
539 switch (fh
->fh_r_ctl
) {
540 case FC_RCTL_DD_UNSOL_CMD
: /* command */
541 ft_recv_cmd(sess
, fp
);
543 case FC_RCTL_DD_SOL_DATA
: /* write data */
544 case FC_RCTL_DD_UNSOL_CTL
:
545 case FC_RCTL_DD_SOL_CTL
:
546 case FC_RCTL_DD_DATA_DESC
: /* transfer ready */
547 case FC_RCTL_ELS4_REQ
: /* SRR, perhaps */
549 printk(KERN_INFO
"%s: unhandled frame r_ctl %x\n",
550 __func__
, fh
->fh_r_ctl
);
552 ft_sess_put(sess
); /* undo get from lookup */
558 * Send new command to target.
560 static void ft_send_cmd(struct ft_cmd
*cmd
)
562 struct fc_frame_header
*fh
= fc_frame_header_get(cmd
->req_frame
);
563 struct se_cmd
*se_cmd
;
564 struct fcp_cmnd
*fcp
;
570 fcp
= fc_frame_payload_get(cmd
->req_frame
, sizeof(*fcp
));
574 if (fcp
->fc_flags
& FCP_CFL_LEN_MASK
)
575 goto err
; /* not handling longer CDBs yet */
577 if (fcp
->fc_tm_flags
) {
578 task_attr
= FCP_PTA_SIMPLE
;
582 switch (fcp
->fc_flags
& (FCP_CFL_RDDATA
| FCP_CFL_WRDATA
)) {
587 data_dir
= DMA_FROM_DEVICE
;
590 data_dir
= DMA_TO_DEVICE
;
592 case FCP_CFL_WRDATA
| FCP_CFL_RDDATA
:
593 goto err
; /* TBD not supported by tcm_fc yet */
596 * Locate the SAM Task Attr from fc_pri_ta
598 switch (fcp
->fc_pri_ta
& FCP_PTA_MASK
) {
600 task_attr
= MSG_HEAD_TAG
;
602 case FCP_PTA_ORDERED
:
603 task_attr
= MSG_ORDERED_TAG
;
606 task_attr
= MSG_ACA_TAG
;
608 case FCP_PTA_SIMPLE
: /* Fallthrough */
610 task_attr
= MSG_SIMPLE_TAG
;
614 task_attr
= fcp
->fc_pri_ta
& FCP_PTA_MASK
;
615 data_len
= ntohl(fcp
->fc_dl
);
616 cmd
->cdb
= fcp
->fc_cdb
;
619 se_cmd
= &cmd
->se_cmd
;
621 * Initialize struct se_cmd descriptor from target_core_mod
624 transport_init_se_cmd(se_cmd
, &ft_configfs
->tf_ops
, cmd
->sess
->se_sess
,
625 data_len
, data_dir
, task_attr
,
626 &cmd
->ft_sense_buffer
[0]);
628 * Check for FCP task management flags
630 if (fcp
->fc_tm_flags
) {
635 fc_seq_exch(cmd
->seq
)->lp
->tt
.seq_set_resp(cmd
->seq
, ft_recv_seq
, cmd
);
637 cmd
->lun
= scsilun_to_int((struct scsi_lun
*)fcp
->fc_lun
);
638 ret
= transport_lookup_cmd_lun(&cmd
->se_cmd
, cmd
->lun
);
640 ft_dump_cmd(cmd
, __func__
);
641 transport_send_check_condition_and_sense(&cmd
->se_cmd
,
642 cmd
->se_cmd
.scsi_sense_reason
, 0);
646 ret
= transport_generic_allocate_tasks(se_cmd
, cmd
->cdb
);
648 FT_IO_DBG("r_ctl %x alloc task ret %d\n", fh
->fh_r_ctl
, ret
);
649 ft_dump_cmd(cmd
, __func__
);
651 if (ret
== -ENOMEM
) {
652 transport_send_check_condition_and_sense(se_cmd
,
653 TCM_LOGICAL_UNIT_COMMUNICATION_FAILURE
, 0);
654 transport_generic_free_cmd(se_cmd
, 0, 1, 0);
657 if (ret
== -EINVAL
) {
658 if (se_cmd
->se_cmd_flags
& SCF_SCSI_RESERVATION_CONFLICT
)
659 ft_queue_status(se_cmd
);
661 transport_send_check_condition_and_sense(se_cmd
,
662 se_cmd
->scsi_sense_reason
, 0);
663 transport_generic_free_cmd(se_cmd
, 0, 1, 0);
666 transport_generic_handle_cdb(se_cmd
);
670 ft_send_resp_code(cmd
, FCP_CMND_FIELDS_INVALID
);
674 * Handle request in the command thread.
676 static void ft_exec_req(struct ft_cmd
*cmd
)
678 FT_IO_DBG("cmd state %x\n", cmd
->state
);
679 switch (cmd
->state
) {
690 * Currently one thread per tpg.
692 int ft_thread(void *arg
)
694 struct ft_tpg
*tpg
= arg
;
695 struct se_queue_obj
*qobj
= &tpg
->qobj
;
699 set_user_nice(current
, -20);
701 while (!kthread_should_stop()) {
702 ret
= wait_event_interruptible(qobj
->thread_wq
,
703 atomic_read(&qobj
->queue_cnt
) || kthread_should_stop());
704 if (ret
< 0 || kthread_should_stop())
706 cmd
= ft_dequeue_cmd(qobj
);