4 * Interface to Linux SCSI midlayer.
6 * Copyright IBM Corporation 2002, 2010
9 #define KMSG_COMPONENT "zfcp"
10 #define pr_fmt(fmt) KMSG_COMPONENT ": " fmt
12 #include <linux/types.h>
13 #include <scsi/fc/fc_fcp.h>
14 #include <asm/atomic.h>
18 #include "zfcp_reqlist.h"
20 static unsigned int default_depth
= 32;
21 module_param_named(queue_depth
, default_depth
, uint
, 0600);
22 MODULE_PARM_DESC(queue_depth
, "Default queue depth for new SCSI devices");
24 static int zfcp_scsi_change_queue_depth(struct scsi_device
*sdev
, int depth
,
28 case SCSI_QDEPTH_DEFAULT
:
29 scsi_adjust_queue_depth(sdev
, scsi_get_tag_type(sdev
), depth
);
31 case SCSI_QDEPTH_QFULL
:
32 scsi_track_queue_full(sdev
, depth
);
34 case SCSI_QDEPTH_RAMP_UP
:
35 scsi_adjust_queue_depth(sdev
, scsi_get_tag_type(sdev
), depth
);
40 return sdev
->queue_depth
;
43 static void zfcp_scsi_slave_destroy(struct scsi_device
*sdpnt
)
45 struct zfcp_unit
*unit
= (struct zfcp_unit
*) sdpnt
->hostdata
;
47 put_device(&unit
->dev
);
50 static int zfcp_scsi_slave_configure(struct scsi_device
*sdp
)
52 if (sdp
->tagged_supported
)
53 scsi_adjust_queue_depth(sdp
, MSG_SIMPLE_TAG
, default_depth
);
55 scsi_adjust_queue_depth(sdp
, 0, 1);
59 static void zfcp_scsi_command_fail(struct scsi_cmnd
*scpnt
, int result
)
61 struct zfcp_adapter
*adapter
=
62 (struct zfcp_adapter
*) scpnt
->device
->host
->hostdata
[0];
64 set_host_byte(scpnt
, result
);
65 zfcp_dbf_scsi_fail_send(adapter
->dbf
, scpnt
);
66 scpnt
->scsi_done(scpnt
);
69 static int zfcp_scsi_queuecommand(struct scsi_cmnd
*scpnt
,
70 void (*done
) (struct scsi_cmnd
*))
72 struct zfcp_unit
*unit
;
73 struct zfcp_adapter
*adapter
;
74 int status
, scsi_result
, ret
;
75 struct fc_rport
*rport
= starget_to_rport(scsi_target(scpnt
->device
));
77 /* reset the status for this request */
79 scpnt
->host_scribble
= NULL
;
80 scpnt
->scsi_done
= done
;
83 * figure out adapter and target device
84 * (stored there by zfcp_scsi_slave_alloc)
86 adapter
= (struct zfcp_adapter
*) scpnt
->device
->host
->hostdata
[0];
87 unit
= scpnt
->device
->hostdata
;
89 scsi_result
= fc_remote_port_chkready(rport
);
90 if (unlikely(scsi_result
)) {
91 scpnt
->result
= scsi_result
;
92 zfcp_dbf_scsi_fail_send(adapter
->dbf
, scpnt
);
93 scpnt
->scsi_done(scpnt
);
97 status
= atomic_read(&unit
->status
);
98 if (unlikely(status
& ZFCP_STATUS_COMMON_ERP_FAILED
) &&
99 !(atomic_read(&unit
->port
->status
) &
100 ZFCP_STATUS_COMMON_ERP_FAILED
)) {
101 /* only unit access denied, but port is good
102 * not covered by FC transport, have to fail here */
103 zfcp_scsi_command_fail(scpnt
, DID_ERROR
);
107 if (unlikely(!(status
& ZFCP_STATUS_COMMON_UNBLOCKED
))) {
108 /* This could be either
109 * open unit pending: this is temporary, will result in
110 * open unit or ERP_FAILED, so retry command
111 * call to rport_delete pending: mimic retry from
112 * fc_remote_port_chkready until rport is BLOCKED
114 zfcp_scsi_command_fail(scpnt
, DID_IMM_RETRY
);
118 ret
= zfcp_fsf_send_fcp_command_task(unit
, scpnt
);
119 if (unlikely(ret
== -EBUSY
))
120 return SCSI_MLQUEUE_DEVICE_BUSY
;
121 else if (unlikely(ret
< 0))
122 return SCSI_MLQUEUE_HOST_BUSY
;
127 static struct zfcp_unit
*zfcp_unit_lookup(struct zfcp_adapter
*adapter
,
128 unsigned int id
, u64 lun
)
131 struct zfcp_port
*port
;
132 struct zfcp_unit
*unit
= NULL
;
134 read_lock_irqsave(&adapter
->port_list_lock
, flags
);
135 list_for_each_entry(port
, &adapter
->port_list
, list
) {
136 if (!port
->rport
|| (id
!= port
->rport
->scsi_target_id
))
138 unit
= zfcp_get_unit_by_lun(port
, lun
);
142 read_unlock_irqrestore(&adapter
->port_list_lock
, flags
);
147 static int zfcp_scsi_slave_alloc(struct scsi_device
*sdp
)
149 struct zfcp_adapter
*adapter
;
150 struct zfcp_unit
*unit
;
153 adapter
= (struct zfcp_adapter
*) sdp
->host
->hostdata
[0];
157 int_to_scsilun(sdp
->lun
, (struct scsi_lun
*)&lun
);
158 unit
= zfcp_unit_lookup(adapter
, sdp
->id
, lun
);
160 sdp
->hostdata
= unit
;
168 static int zfcp_scsi_eh_abort_handler(struct scsi_cmnd
*scpnt
)
170 struct Scsi_Host
*scsi_host
= scpnt
->device
->host
;
171 struct zfcp_adapter
*adapter
=
172 (struct zfcp_adapter
*) scsi_host
->hostdata
[0];
173 struct zfcp_unit
*unit
= scpnt
->device
->hostdata
;
174 struct zfcp_fsf_req
*old_req
, *abrt_req
;
176 unsigned long old_reqid
= (unsigned long) scpnt
->host_scribble
;
177 int retval
= SUCCESS
;
181 /* avoid race condition between late normal completion and abort */
182 write_lock_irqsave(&adapter
->abort_lock
, flags
);
184 old_req
= zfcp_reqlist_find(adapter
->req_list
, old_reqid
);
186 write_unlock_irqrestore(&adapter
->abort_lock
, flags
);
187 zfcp_dbf_scsi_abort("lte1", adapter
->dbf
, scpnt
, NULL
,
189 return FAILED
; /* completion could be in progress */
191 old_req
->data
= NULL
;
193 /* don't access old fsf_req after releasing the abort_lock */
194 write_unlock_irqrestore(&adapter
->abort_lock
, flags
);
197 abrt_req
= zfcp_fsf_abort_fcp_command(old_reqid
, unit
);
201 zfcp_erp_wait(adapter
);
202 fc_block_scsi_eh(scpnt
);
203 if (!(atomic_read(&adapter
->status
) &
204 ZFCP_STATUS_COMMON_RUNNING
)) {
205 zfcp_dbf_scsi_abort("nres", adapter
->dbf
, scpnt
, NULL
,
213 wait_for_completion(&abrt_req
->completion
);
215 if (abrt_req
->status
& ZFCP_STATUS_FSFREQ_ABORTSUCCEEDED
)
217 else if (abrt_req
->status
& ZFCP_STATUS_FSFREQ_ABORTNOTNEEDED
)
223 zfcp_dbf_scsi_abort(dbf_tag
, adapter
->dbf
, scpnt
, abrt_req
, old_reqid
);
224 zfcp_fsf_req_free(abrt_req
);
228 static int zfcp_task_mgmt_function(struct scsi_cmnd
*scpnt
, u8 tm_flags
)
230 struct zfcp_unit
*unit
= scpnt
->device
->hostdata
;
231 struct zfcp_adapter
*adapter
= unit
->port
->adapter
;
232 struct zfcp_fsf_req
*fsf_req
= NULL
;
233 int retval
= SUCCESS
;
237 fsf_req
= zfcp_fsf_send_fcp_ctm(unit
, tm_flags
);
241 zfcp_erp_wait(adapter
);
242 fc_block_scsi_eh(scpnt
);
243 if (!(atomic_read(&adapter
->status
) &
244 ZFCP_STATUS_COMMON_RUNNING
)) {
245 zfcp_dbf_scsi_devreset("nres", tm_flags
, unit
, scpnt
);
252 wait_for_completion(&fsf_req
->completion
);
254 if (fsf_req
->status
& ZFCP_STATUS_FSFREQ_TMFUNCFAILED
) {
255 zfcp_dbf_scsi_devreset("fail", tm_flags
, unit
, scpnt
);
258 zfcp_dbf_scsi_devreset("okay", tm_flags
, unit
, scpnt
);
260 zfcp_fsf_req_free(fsf_req
);
264 static int zfcp_scsi_eh_device_reset_handler(struct scsi_cmnd
*scpnt
)
266 return zfcp_task_mgmt_function(scpnt
, FCP_TMF_LUN_RESET
);
269 static int zfcp_scsi_eh_target_reset_handler(struct scsi_cmnd
*scpnt
)
271 return zfcp_task_mgmt_function(scpnt
, FCP_TMF_TGT_RESET
);
274 static int zfcp_scsi_eh_host_reset_handler(struct scsi_cmnd
*scpnt
)
276 struct zfcp_unit
*unit
= scpnt
->device
->hostdata
;
277 struct zfcp_adapter
*adapter
= unit
->port
->adapter
;
279 zfcp_erp_adapter_reopen(adapter
, 0, "schrh_1", scpnt
);
280 zfcp_erp_wait(adapter
);
281 fc_block_scsi_eh(scpnt
);
286 int zfcp_adapter_scsi_register(struct zfcp_adapter
*adapter
)
288 struct ccw_dev_id dev_id
;
290 if (adapter
->scsi_host
)
293 ccw_device_get_id(adapter
->ccw_device
, &dev_id
);
294 /* register adapter as SCSI host with mid layer of SCSI stack */
295 adapter
->scsi_host
= scsi_host_alloc(&zfcp_data
.scsi_host_template
,
296 sizeof (struct zfcp_adapter
*));
297 if (!adapter
->scsi_host
) {
298 dev_err(&adapter
->ccw_device
->dev
,
299 "Registering the FCP device with the "
300 "SCSI stack failed\n");
304 /* tell the SCSI stack some characteristics of this adapter */
305 adapter
->scsi_host
->max_id
= 1;
306 adapter
->scsi_host
->max_lun
= 1;
307 adapter
->scsi_host
->max_channel
= 0;
308 adapter
->scsi_host
->unique_id
= dev_id
.devno
;
309 adapter
->scsi_host
->max_cmd_len
= 16; /* in struct fcp_cmnd */
310 adapter
->scsi_host
->transportt
= zfcp_data
.scsi_transport_template
;
312 adapter
->scsi_host
->hostdata
[0] = (unsigned long) adapter
;
314 if (scsi_add_host(adapter
->scsi_host
, &adapter
->ccw_device
->dev
)) {
315 scsi_host_put(adapter
->scsi_host
);
322 void zfcp_adapter_scsi_unregister(struct zfcp_adapter
*adapter
)
324 struct Scsi_Host
*shost
;
325 struct zfcp_port
*port
;
327 shost
= adapter
->scsi_host
;
331 read_lock_irq(&adapter
->port_list_lock
);
332 list_for_each_entry(port
, &adapter
->port_list
, list
)
334 read_unlock_irq(&adapter
->port_list_lock
);
336 fc_remove_host(shost
);
337 scsi_remove_host(shost
);
338 scsi_host_put(shost
);
339 adapter
->scsi_host
= NULL
;
344 static struct fc_host_statistics
*
345 zfcp_init_fc_host_stats(struct zfcp_adapter
*adapter
)
347 struct fc_host_statistics
*fc_stats
;
349 if (!adapter
->fc_stats
) {
350 fc_stats
= kmalloc(sizeof(*fc_stats
), GFP_KERNEL
);
353 adapter
->fc_stats
= fc_stats
; /* freed in adapter_release */
355 memset(adapter
->fc_stats
, 0, sizeof(*adapter
->fc_stats
));
356 return adapter
->fc_stats
;
359 static void zfcp_adjust_fc_host_stats(struct fc_host_statistics
*fc_stats
,
360 struct fsf_qtcb_bottom_port
*data
,
361 struct fsf_qtcb_bottom_port
*old
)
363 fc_stats
->seconds_since_last_reset
=
364 data
->seconds_since_last_reset
- old
->seconds_since_last_reset
;
365 fc_stats
->tx_frames
= data
->tx_frames
- old
->tx_frames
;
366 fc_stats
->tx_words
= data
->tx_words
- old
->tx_words
;
367 fc_stats
->rx_frames
= data
->rx_frames
- old
->rx_frames
;
368 fc_stats
->rx_words
= data
->rx_words
- old
->rx_words
;
369 fc_stats
->lip_count
= data
->lip
- old
->lip
;
370 fc_stats
->nos_count
= data
->nos
- old
->nos
;
371 fc_stats
->error_frames
= data
->error_frames
- old
->error_frames
;
372 fc_stats
->dumped_frames
= data
->dumped_frames
- old
->dumped_frames
;
373 fc_stats
->link_failure_count
= data
->link_failure
- old
->link_failure
;
374 fc_stats
->loss_of_sync_count
= data
->loss_of_sync
- old
->loss_of_sync
;
375 fc_stats
->loss_of_signal_count
=
376 data
->loss_of_signal
- old
->loss_of_signal
;
377 fc_stats
->prim_seq_protocol_err_count
=
378 data
->psp_error_counts
- old
->psp_error_counts
;
379 fc_stats
->invalid_tx_word_count
=
380 data
->invalid_tx_words
- old
->invalid_tx_words
;
381 fc_stats
->invalid_crc_count
= data
->invalid_crcs
- old
->invalid_crcs
;
382 fc_stats
->fcp_input_requests
=
383 data
->input_requests
- old
->input_requests
;
384 fc_stats
->fcp_output_requests
=
385 data
->output_requests
- old
->output_requests
;
386 fc_stats
->fcp_control_requests
=
387 data
->control_requests
- old
->control_requests
;
388 fc_stats
->fcp_input_megabytes
= data
->input_mb
- old
->input_mb
;
389 fc_stats
->fcp_output_megabytes
= data
->output_mb
- old
->output_mb
;
392 static void zfcp_set_fc_host_stats(struct fc_host_statistics
*fc_stats
,
393 struct fsf_qtcb_bottom_port
*data
)
395 fc_stats
->seconds_since_last_reset
= data
->seconds_since_last_reset
;
396 fc_stats
->tx_frames
= data
->tx_frames
;
397 fc_stats
->tx_words
= data
->tx_words
;
398 fc_stats
->rx_frames
= data
->rx_frames
;
399 fc_stats
->rx_words
= data
->rx_words
;
400 fc_stats
->lip_count
= data
->lip
;
401 fc_stats
->nos_count
= data
->nos
;
402 fc_stats
->error_frames
= data
->error_frames
;
403 fc_stats
->dumped_frames
= data
->dumped_frames
;
404 fc_stats
->link_failure_count
= data
->link_failure
;
405 fc_stats
->loss_of_sync_count
= data
->loss_of_sync
;
406 fc_stats
->loss_of_signal_count
= data
->loss_of_signal
;
407 fc_stats
->prim_seq_protocol_err_count
= data
->psp_error_counts
;
408 fc_stats
->invalid_tx_word_count
= data
->invalid_tx_words
;
409 fc_stats
->invalid_crc_count
= data
->invalid_crcs
;
410 fc_stats
->fcp_input_requests
= data
->input_requests
;
411 fc_stats
->fcp_output_requests
= data
->output_requests
;
412 fc_stats
->fcp_control_requests
= data
->control_requests
;
413 fc_stats
->fcp_input_megabytes
= data
->input_mb
;
414 fc_stats
->fcp_output_megabytes
= data
->output_mb
;
417 static struct fc_host_statistics
*zfcp_get_fc_host_stats(struct Scsi_Host
*host
)
419 struct zfcp_adapter
*adapter
;
420 struct fc_host_statistics
*fc_stats
;
421 struct fsf_qtcb_bottom_port
*data
;
424 adapter
= (struct zfcp_adapter
*)host
->hostdata
[0];
425 fc_stats
= zfcp_init_fc_host_stats(adapter
);
429 data
= kzalloc(sizeof(*data
), GFP_KERNEL
);
433 ret
= zfcp_fsf_exchange_port_data_sync(adapter
->qdio
, data
);
439 if (adapter
->stats_reset
&&
440 ((jiffies
/HZ
- adapter
->stats_reset
) <
441 data
->seconds_since_last_reset
))
442 zfcp_adjust_fc_host_stats(fc_stats
, data
,
443 adapter
->stats_reset_data
);
445 zfcp_set_fc_host_stats(fc_stats
, data
);
451 static void zfcp_reset_fc_host_stats(struct Scsi_Host
*shost
)
453 struct zfcp_adapter
*adapter
;
454 struct fsf_qtcb_bottom_port
*data
;
457 adapter
= (struct zfcp_adapter
*)shost
->hostdata
[0];
458 data
= kzalloc(sizeof(*data
), GFP_KERNEL
);
462 ret
= zfcp_fsf_exchange_port_data_sync(adapter
->qdio
, data
);
466 adapter
->stats_reset
= jiffies
/HZ
;
467 kfree(adapter
->stats_reset_data
);
468 adapter
->stats_reset_data
= data
; /* finally freed in
473 static void zfcp_get_host_port_state(struct Scsi_Host
*shost
)
475 struct zfcp_adapter
*adapter
=
476 (struct zfcp_adapter
*)shost
->hostdata
[0];
477 int status
= atomic_read(&adapter
->status
);
479 if ((status
& ZFCP_STATUS_COMMON_RUNNING
) &&
480 !(status
& ZFCP_STATUS_ADAPTER_LINK_UNPLUGGED
))
481 fc_host_port_state(shost
) = FC_PORTSTATE_ONLINE
;
482 else if (status
& ZFCP_STATUS_ADAPTER_LINK_UNPLUGGED
)
483 fc_host_port_state(shost
) = FC_PORTSTATE_LINKDOWN
;
484 else if (status
& ZFCP_STATUS_COMMON_ERP_FAILED
)
485 fc_host_port_state(shost
) = FC_PORTSTATE_ERROR
;
487 fc_host_port_state(shost
) = FC_PORTSTATE_UNKNOWN
;
490 static void zfcp_set_rport_dev_loss_tmo(struct fc_rport
*rport
, u32 timeout
)
492 rport
->dev_loss_tmo
= timeout
;
496 * zfcp_scsi_terminate_rport_io - Terminate all I/O on a rport
497 * @rport: The FC rport where to teminate I/O
499 * Abort all pending SCSI commands for a port by closing the
500 * port. Using a reopen avoiding a conflict with a shutdown
501 * overwriting a reopen.
503 static void zfcp_scsi_terminate_rport_io(struct fc_rport
*rport
)
505 struct zfcp_port
*port
;
506 struct Scsi_Host
*shost
= rport_to_shost(rport
);
507 struct zfcp_adapter
*adapter
=
508 (struct zfcp_adapter
*)shost
->hostdata
[0];
510 port
= zfcp_get_port_by_wwpn(adapter
, rport
->port_name
);
513 zfcp_erp_port_reopen(port
, 0, "sctrpi1", NULL
);
514 put_device(&port
->dev
);
518 static void zfcp_scsi_rport_register(struct zfcp_port
*port
)
520 struct fc_rport_identifiers ids
;
521 struct fc_rport
*rport
;
526 ids
.node_name
= port
->wwnn
;
527 ids
.port_name
= port
->wwpn
;
528 ids
.port_id
= port
->d_id
;
529 ids
.roles
= FC_RPORT_ROLE_FCP_TARGET
;
531 rport
= fc_remote_port_add(port
->adapter
->scsi_host
, 0, &ids
);
533 dev_err(&port
->adapter
->ccw_device
->dev
,
534 "Registering port 0x%016Lx failed\n",
535 (unsigned long long)port
->wwpn
);
539 rport
->maxframe_size
= port
->maxframe_size
;
540 rport
->supported_classes
= port
->supported_classes
;
544 static void zfcp_scsi_rport_block(struct zfcp_port
*port
)
546 struct fc_rport
*rport
= port
->rport
;
549 fc_remote_port_delete(rport
);
554 void zfcp_scsi_schedule_rport_register(struct zfcp_port
*port
)
556 get_device(&port
->dev
);
557 port
->rport_task
= RPORT_ADD
;
559 if (!queue_work(port
->adapter
->work_queue
, &port
->rport_work
))
560 put_device(&port
->dev
);
563 void zfcp_scsi_schedule_rport_block(struct zfcp_port
*port
)
565 get_device(&port
->dev
);
566 port
->rport_task
= RPORT_DEL
;
568 if (port
->rport
&& queue_work(port
->adapter
->work_queue
,
572 put_device(&port
->dev
);
575 void zfcp_scsi_schedule_rports_block(struct zfcp_adapter
*adapter
)
578 struct zfcp_port
*port
;
580 read_lock_irqsave(&adapter
->port_list_lock
, flags
);
581 list_for_each_entry(port
, &adapter
->port_list
, list
)
582 zfcp_scsi_schedule_rport_block(port
);
583 read_unlock_irqrestore(&adapter
->port_list_lock
, flags
);
586 void zfcp_scsi_rport_work(struct work_struct
*work
)
588 struct zfcp_port
*port
= container_of(work
, struct zfcp_port
,
591 while (port
->rport_task
) {
592 if (port
->rport_task
== RPORT_ADD
) {
593 port
->rport_task
= RPORT_NONE
;
594 zfcp_scsi_rport_register(port
);
596 port
->rport_task
= RPORT_NONE
;
597 zfcp_scsi_rport_block(port
);
601 put_device(&port
->dev
);
605 void zfcp_scsi_scan(struct work_struct
*work
)
607 struct zfcp_unit
*unit
= container_of(work
, struct zfcp_unit
,
609 struct fc_rport
*rport
;
611 flush_work(&unit
->port
->rport_work
);
612 rport
= unit
->port
->rport
;
614 if (rport
&& rport
->port_state
== FC_PORTSTATE_ONLINE
)
615 scsi_scan_target(&rport
->dev
, 0, rport
->scsi_target_id
,
616 scsilun_to_int((struct scsi_lun
*)
619 put_device(&unit
->dev
);
622 struct fc_function_template zfcp_transport_functions
= {
623 .show_starget_port_id
= 1,
624 .show_starget_port_name
= 1,
625 .show_starget_node_name
= 1,
626 .show_rport_supported_classes
= 1,
627 .show_rport_maxframe_size
= 1,
628 .show_rport_dev_loss_tmo
= 1,
629 .show_host_node_name
= 1,
630 .show_host_port_name
= 1,
631 .show_host_permanent_port_name
= 1,
632 .show_host_supported_classes
= 1,
633 .show_host_supported_fc4s
= 1,
634 .show_host_supported_speeds
= 1,
635 .show_host_maxframe_size
= 1,
636 .show_host_serial_number
= 1,
637 .get_fc_host_stats
= zfcp_get_fc_host_stats
,
638 .reset_fc_host_stats
= zfcp_reset_fc_host_stats
,
639 .set_rport_dev_loss_tmo
= zfcp_set_rport_dev_loss_tmo
,
640 .get_host_port_state
= zfcp_get_host_port_state
,
641 .terminate_rport_io
= zfcp_scsi_terminate_rport_io
,
642 .show_host_port_state
= 1,
643 .show_host_active_fc4s
= 1,
644 .bsg_request
= zfcp_fc_exec_bsg_job
,
645 .bsg_timeout
= zfcp_fc_timeout_bsg_job
,
646 /* no functions registered for following dynamic attributes but
647 directly set by LLDD */
648 .show_host_port_type
= 1,
649 .show_host_speed
= 1,
650 .show_host_port_id
= 1,
651 .disable_target_scan
= 1,
652 .dd_bsg_size
= sizeof(struct zfcp_fsf_ct_els
),
655 struct zfcp_data zfcp_data
= {
656 .scsi_host_template
= {
658 .module
= THIS_MODULE
,
660 .change_queue_depth
= zfcp_scsi_change_queue_depth
,
661 .slave_alloc
= zfcp_scsi_slave_alloc
,
662 .slave_configure
= zfcp_scsi_slave_configure
,
663 .slave_destroy
= zfcp_scsi_slave_destroy
,
664 .queuecommand
= zfcp_scsi_queuecommand
,
665 .eh_abort_handler
= zfcp_scsi_eh_abort_handler
,
666 .eh_device_reset_handler
= zfcp_scsi_eh_device_reset_handler
,
667 .eh_target_reset_handler
= zfcp_scsi_eh_target_reset_handler
,
668 .eh_host_reset_handler
= zfcp_scsi_eh_host_reset_handler
,
671 .sg_tablesize
= ZFCP_MAX_SBALES_PER_REQ
,
674 .sdev_attrs
= zfcp_sysfs_sdev_attrs
,
675 .max_sectors
= (ZFCP_MAX_SBALES_PER_REQ
* 8),
676 .shost_attrs
= zfcp_sysfs_shost_attrs
,