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9#define KMSG_COMPONENT "zfcp"
10#define pr_fmt(fmt) KMSG_COMPONENT ": " fmt
11
12#include "zfcp_ext.h"
13#include <asm/atomic.h>
14
15
16char *zfcp_get_fcp_sns_info_ptr(struct fcp_rsp_iu *fcp_rsp_iu)
17{
18 char *fcp_sns_info_ptr;
19
20 fcp_sns_info_ptr = (unsigned char *) &fcp_rsp_iu[1];
21 if (fcp_rsp_iu->validity.bits.fcp_rsp_len_valid)
22 fcp_sns_info_ptr += fcp_rsp_iu->fcp_rsp_len;
23
24 return fcp_sns_info_ptr;
25}
26
27static void zfcp_scsi_slave_destroy(struct scsi_device *sdpnt)
28{
29 struct zfcp_unit *unit = (struct zfcp_unit *) sdpnt->hostdata;
30 unit->device = NULL;
31 zfcp_unit_put(unit);
32}
33
34static int zfcp_scsi_slave_configure(struct scsi_device *sdp)
35{
36 if (sdp->tagged_supported)
37 scsi_adjust_queue_depth(sdp, MSG_SIMPLE_TAG, 32);
38 else
39 scsi_adjust_queue_depth(sdp, 0, 1);
40 return 0;
41}
42
43static void zfcp_scsi_command_fail(struct scsi_cmnd *scpnt, int result)
44{
45 set_host_byte(scpnt, result);
46 if ((scpnt->device != NULL) && (scpnt->device->host != NULL))
47 zfcp_scsi_dbf_event_result("fail", 4,
48 (struct zfcp_adapter*) scpnt->device->host->hostdata[0],
49 scpnt, NULL);
50
51 scpnt->scsi_done(scpnt);
52}
53
54static int zfcp_scsi_queuecommand(struct scsi_cmnd *scpnt,
55 void (*done) (struct scsi_cmnd *))
56{
57 struct zfcp_unit *unit;
58 struct zfcp_adapter *adapter;
59 int status, scsi_result, ret;
60 struct fc_rport *rport = starget_to_rport(scsi_target(scpnt->device));
61
62
63 scpnt->result = 0;
64 scpnt->host_scribble = NULL;
65 scpnt->scsi_done = done;
66
67
68
69
70
71 adapter = (struct zfcp_adapter *) scpnt->device->host->hostdata[0];
72 unit = scpnt->device->hostdata;
73
74 BUG_ON(!adapter || (adapter != unit->port->adapter));
75 BUG_ON(!scpnt->scsi_done);
76
77 if (unlikely(!unit)) {
78 zfcp_scsi_command_fail(scpnt, DID_NO_CONNECT);
79 return 0;
80 }
81
82 scsi_result = fc_remote_port_chkready(rport);
83 if (unlikely(scsi_result)) {
84 scpnt->result = scsi_result;
85 zfcp_scsi_dbf_event_result("fail", 4, adapter, scpnt, NULL);
86 scpnt->scsi_done(scpnt);
87 return 0;
88 }
89
90 status = atomic_read(&unit->status);
91 if (unlikely((status & ZFCP_STATUS_COMMON_ERP_FAILED) ||
92 !(status & ZFCP_STATUS_COMMON_RUNNING))) {
93 zfcp_scsi_command_fail(scpnt, DID_ERROR);
94 return 0;;
95 }
96
97 ret = zfcp_fsf_send_fcp_command_task(unit, scpnt);
98 if (unlikely(ret == -EBUSY))
99 return SCSI_MLQUEUE_DEVICE_BUSY;
100 else if (unlikely(ret < 0))
101 return SCSI_MLQUEUE_HOST_BUSY;
102
103 return ret;
104}
105
106static struct zfcp_unit *zfcp_unit_lookup(struct zfcp_adapter *adapter,
107 int channel, unsigned int id,
108 unsigned int lun)
109{
110 struct zfcp_port *port;
111 struct zfcp_unit *unit;
112 int scsi_lun;
113
114 list_for_each_entry(port, &adapter->port_list_head, list) {
115 if (!port->rport || (id != port->rport->scsi_target_id))
116 continue;
117 list_for_each_entry(unit, &port->unit_list_head, list) {
118 scsi_lun = scsilun_to_int(
119 (struct scsi_lun *)&unit->fcp_lun);
120 if (lun == scsi_lun)
121 return unit;
122 }
123 }
124
125 return NULL;
126}
127
128static int zfcp_scsi_slave_alloc(struct scsi_device *sdp)
129{
130 struct zfcp_adapter *adapter;
131 struct zfcp_unit *unit;
132 unsigned long flags;
133 int retval = -ENXIO;
134
135 adapter = (struct zfcp_adapter *) sdp->host->hostdata[0];
136 if (!adapter)
137 goto out;
138
139 read_lock_irqsave(&zfcp_data.config_lock, flags);
140 unit = zfcp_unit_lookup(adapter, sdp->channel, sdp->id, sdp->lun);
141 if (unit) {
142 sdp->hostdata = unit;
143 unit->device = sdp;
144 zfcp_unit_get(unit);
145 retval = 0;
146 }
147 read_unlock_irqrestore(&zfcp_data.config_lock, flags);
148out:
149 return retval;
150}
151
152static int zfcp_scsi_eh_abort_handler(struct scsi_cmnd *scpnt)
153{
154 struct Scsi_Host *scsi_host = scpnt->device->host;
155 struct zfcp_adapter *adapter =
156 (struct zfcp_adapter *) scsi_host->hostdata[0];
157 struct zfcp_unit *unit = scpnt->device->hostdata;
158 struct zfcp_fsf_req *old_req, *abrt_req;
159 unsigned long flags;
160 unsigned long old_req_id = (unsigned long) scpnt->host_scribble;
161 int retval = SUCCESS;
162 int retry = 3;
163
164
165 write_lock_irqsave(&adapter->abort_lock, flags);
166
167 spin_lock(&adapter->req_list_lock);
168 old_req = zfcp_reqlist_find(adapter, old_req_id);
169 spin_unlock(&adapter->req_list_lock);
170 if (!old_req) {
171 write_unlock_irqrestore(&adapter->abort_lock, flags);
172 zfcp_scsi_dbf_event_abort("lte1", adapter, scpnt, NULL,
173 old_req_id);
174 return FAILED;
175 }
176 old_req->data = NULL;
177
178
179 write_unlock_irqrestore(&adapter->abort_lock, flags);
180
181 while (retry--) {
182 abrt_req = zfcp_fsf_abort_fcp_command(old_req_id, unit);
183 if (abrt_req)
184 break;
185
186 zfcp_erp_wait(adapter);
187 if (!(atomic_read(&adapter->status) &
188 ZFCP_STATUS_COMMON_RUNNING)) {
189 zfcp_scsi_dbf_event_abort("nres", adapter, scpnt, NULL,
190 old_req_id);
191 return SUCCESS;
192 }
193 }
194 if (!abrt_req)
195 return FAILED;
196
197 wait_event(abrt_req->completion_wq,
198 abrt_req->status & ZFCP_STATUS_FSFREQ_COMPLETED);
199
200 if (abrt_req->status & ZFCP_STATUS_FSFREQ_ABORTSUCCEEDED)
201 zfcp_scsi_dbf_event_abort("okay", adapter, scpnt, abrt_req, 0);
202 else if (abrt_req->status & ZFCP_STATUS_FSFREQ_ABORTNOTNEEDED)
203 zfcp_scsi_dbf_event_abort("lte2", adapter, scpnt, abrt_req, 0);
204 else {
205 zfcp_scsi_dbf_event_abort("fail", adapter, scpnt, abrt_req, 0);
206 retval = FAILED;
207 }
208 zfcp_fsf_req_free(abrt_req);
209 return retval;
210}
211
212static int zfcp_task_mgmt_function(struct scsi_cmnd *scpnt, u8 tm_flags)
213{
214 struct zfcp_unit *unit = scpnt->device->hostdata;
215 struct zfcp_adapter *adapter = unit->port->adapter;
216 struct zfcp_fsf_req *fsf_req;
217 int retval = SUCCESS;
218 int retry = 3;
219
220 while (retry--) {
221 fsf_req = zfcp_fsf_send_fcp_ctm(unit, tm_flags);
222 if (fsf_req)
223 break;
224
225 zfcp_erp_wait(adapter);
226 if (!(atomic_read(&adapter->status) &
227 ZFCP_STATUS_COMMON_RUNNING)) {
228 zfcp_scsi_dbf_event_devreset("nres", tm_flags, unit,
229 scpnt);
230 return SUCCESS;
231 }
232 }
233 if (!fsf_req)
234 return FAILED;
235
236 wait_event(fsf_req->completion_wq,
237 fsf_req->status & ZFCP_STATUS_FSFREQ_COMPLETED);
238
239 if (fsf_req->status & ZFCP_STATUS_FSFREQ_TMFUNCFAILED) {
240 zfcp_scsi_dbf_event_devreset("fail", tm_flags, unit, scpnt);
241 retval = FAILED;
242 } else if (fsf_req->status & ZFCP_STATUS_FSFREQ_TMFUNCNOTSUPP) {
243 zfcp_scsi_dbf_event_devreset("nsup", tm_flags, unit, scpnt);
244 retval = FAILED;
245 } else
246 zfcp_scsi_dbf_event_devreset("okay", tm_flags, unit, scpnt);
247
248 zfcp_fsf_req_free(fsf_req);
249 return retval;
250}
251
252static int zfcp_scsi_eh_device_reset_handler(struct scsi_cmnd *scpnt)
253{
254 return zfcp_task_mgmt_function(scpnt, FCP_LOGICAL_UNIT_RESET);
255}
256
257static int zfcp_scsi_eh_target_reset_handler(struct scsi_cmnd *scpnt)
258{
259 return zfcp_task_mgmt_function(scpnt, FCP_TARGET_RESET);
260}
261
262static int zfcp_scsi_eh_host_reset_handler(struct scsi_cmnd *scpnt)
263{
264 struct zfcp_unit *unit = scpnt->device->hostdata;
265 struct zfcp_adapter *adapter = unit->port->adapter;
266
267 zfcp_erp_adapter_reopen(adapter, 0, "schrh_1", scpnt);
268 zfcp_erp_wait(adapter);
269
270 return SUCCESS;
271}
272
273int zfcp_adapter_scsi_register(struct zfcp_adapter *adapter)
274{
275 struct ccw_dev_id dev_id;
276
277 if (adapter->scsi_host)
278 return 0;
279
280 ccw_device_get_id(adapter->ccw_device, &dev_id);
281
282 adapter->scsi_host = scsi_host_alloc(&zfcp_data.scsi_host_template,
283 sizeof (struct zfcp_adapter *));
284 if (!adapter->scsi_host) {
285 dev_err(&adapter->ccw_device->dev,
286 "Registering the FCP device with the "
287 "SCSI stack failed\n");
288 return -EIO;
289 }
290
291
292 adapter->scsi_host->max_id = 1;
293 adapter->scsi_host->max_lun = 1;
294 adapter->scsi_host->max_channel = 0;
295 adapter->scsi_host->unique_id = dev_id.devno;
296 adapter->scsi_host->max_cmd_len = 255;
297 adapter->scsi_host->transportt = zfcp_data.scsi_transport_template;
298
299 adapter->scsi_host->hostdata[0] = (unsigned long) adapter;
300
301 if (scsi_add_host(adapter->scsi_host, &adapter->ccw_device->dev)) {
302 scsi_host_put(adapter->scsi_host);
303 return -EIO;
304 }
305
306 return 0;
307}
308
309void zfcp_adapter_scsi_unregister(struct zfcp_adapter *adapter)
310{
311 struct Scsi_Host *shost;
312 struct zfcp_port *port;
313
314 shost = adapter->scsi_host;
315 if (!shost)
316 return;
317
318 read_lock_irq(&zfcp_data.config_lock);
319 list_for_each_entry(port, &adapter->port_list_head, list)
320 if (port->rport)
321 port->rport = NULL;
322
323 read_unlock_irq(&zfcp_data.config_lock);
324 fc_remove_host(shost);
325 scsi_remove_host(shost);
326 scsi_host_put(shost);
327 adapter->scsi_host = NULL;
328
329 return;
330}
331
332static struct fc_host_statistics*
333zfcp_init_fc_host_stats(struct zfcp_adapter *adapter)
334{
335 struct fc_host_statistics *fc_stats;
336
337 if (!adapter->fc_stats) {
338 fc_stats = kmalloc(sizeof(*fc_stats), GFP_KERNEL);
339 if (!fc_stats)
340 return NULL;
341 adapter->fc_stats = fc_stats;
342 }
343 memset(adapter->fc_stats, 0, sizeof(*adapter->fc_stats));
344 return adapter->fc_stats;
345}
346
347static void zfcp_adjust_fc_host_stats(struct fc_host_statistics *fc_stats,
348 struct fsf_qtcb_bottom_port *data,
349 struct fsf_qtcb_bottom_port *old)
350{
351 fc_stats->seconds_since_last_reset =
352 data->seconds_since_last_reset - old->seconds_since_last_reset;
353 fc_stats->tx_frames = data->tx_frames - old->tx_frames;
354 fc_stats->tx_words = data->tx_words - old->tx_words;
355 fc_stats->rx_frames = data->rx_frames - old->rx_frames;
356 fc_stats->rx_words = data->rx_words - old->rx_words;
357 fc_stats->lip_count = data->lip - old->lip;
358 fc_stats->nos_count = data->nos - old->nos;
359 fc_stats->error_frames = data->error_frames - old->error_frames;
360 fc_stats->dumped_frames = data->dumped_frames - old->dumped_frames;
361 fc_stats->link_failure_count = data->link_failure - old->link_failure;
362 fc_stats->loss_of_sync_count = data->loss_of_sync - old->loss_of_sync;
363 fc_stats->loss_of_signal_count =
364 data->loss_of_signal - old->loss_of_signal;
365 fc_stats->prim_seq_protocol_err_count =
366 data->psp_error_counts - old->psp_error_counts;
367 fc_stats->invalid_tx_word_count =
368 data->invalid_tx_words - old->invalid_tx_words;
369 fc_stats->invalid_crc_count = data->invalid_crcs - old->invalid_crcs;
370 fc_stats->fcp_input_requests =
371 data->input_requests - old->input_requests;
372 fc_stats->fcp_output_requests =
373 data->output_requests - old->output_requests;
374 fc_stats->fcp_control_requests =
375 data->control_requests - old->control_requests;
376 fc_stats->fcp_input_megabytes = data->input_mb - old->input_mb;
377 fc_stats->fcp_output_megabytes = data->output_mb - old->output_mb;
378}
379
380static void zfcp_set_fc_host_stats(struct fc_host_statistics *fc_stats,
381 struct fsf_qtcb_bottom_port *data)
382{
383 fc_stats->seconds_since_last_reset = data->seconds_since_last_reset;
384 fc_stats->tx_frames = data->tx_frames;
385 fc_stats->tx_words = data->tx_words;
386 fc_stats->rx_frames = data->rx_frames;
387 fc_stats->rx_words = data->rx_words;
388 fc_stats->lip_count = data->lip;
389 fc_stats->nos_count = data->nos;
390 fc_stats->error_frames = data->error_frames;
391 fc_stats->dumped_frames = data->dumped_frames;
392 fc_stats->link_failure_count = data->link_failure;
393 fc_stats->loss_of_sync_count = data->loss_of_sync;
394 fc_stats->loss_of_signal_count = data->loss_of_signal;
395 fc_stats->prim_seq_protocol_err_count = data->psp_error_counts;
396 fc_stats->invalid_tx_word_count = data->invalid_tx_words;
397 fc_stats->invalid_crc_count = data->invalid_crcs;
398 fc_stats->fcp_input_requests = data->input_requests;
399 fc_stats->fcp_output_requests = data->output_requests;
400 fc_stats->fcp_control_requests = data->control_requests;
401 fc_stats->fcp_input_megabytes = data->input_mb;
402 fc_stats->fcp_output_megabytes = data->output_mb;
403}
404
405static struct fc_host_statistics *zfcp_get_fc_host_stats(struct Scsi_Host *host)
406{
407 struct zfcp_adapter *adapter;
408 struct fc_host_statistics *fc_stats;
409 struct fsf_qtcb_bottom_port *data;
410 int ret;
411
412 adapter = (struct zfcp_adapter *)host->hostdata[0];
413 fc_stats = zfcp_init_fc_host_stats(adapter);
414 if (!fc_stats)
415 return NULL;
416
417 data = kzalloc(sizeof(*data), GFP_KERNEL);
418 if (!data)
419 return NULL;
420
421 ret = zfcp_fsf_exchange_port_data_sync(adapter, data);
422 if (ret) {
423 kfree(data);
424 return NULL;
425 }
426
427 if (adapter->stats_reset &&
428 ((jiffies/HZ - adapter->stats_reset) <
429 data->seconds_since_last_reset))
430 zfcp_adjust_fc_host_stats(fc_stats, data,
431 adapter->stats_reset_data);
432 else
433 zfcp_set_fc_host_stats(fc_stats, data);
434
435 kfree(data);
436 return fc_stats;
437}
438
439static void zfcp_reset_fc_host_stats(struct Scsi_Host *shost)
440{
441 struct zfcp_adapter *adapter;
442 struct fsf_qtcb_bottom_port *data;
443 int ret;
444
445 adapter = (struct zfcp_adapter *)shost->hostdata[0];
446 data = kzalloc(sizeof(*data), GFP_KERNEL);
447 if (!data)
448 return;
449
450 ret = zfcp_fsf_exchange_port_data_sync(adapter, data);
451 if (ret)
452 kfree(data);
453 else {
454 adapter->stats_reset = jiffies/HZ;
455 kfree(adapter->stats_reset_data);
456 adapter->stats_reset_data = data;
457
458 }
459}
460
461static void zfcp_get_host_port_state(struct Scsi_Host *shost)
462{
463 struct zfcp_adapter *adapter =
464 (struct zfcp_adapter *)shost->hostdata[0];
465 int status = atomic_read(&adapter->status);
466
467 if ((status & ZFCP_STATUS_COMMON_RUNNING) &&
468 !(status & ZFCP_STATUS_ADAPTER_LINK_UNPLUGGED))
469 fc_host_port_state(shost) = FC_PORTSTATE_ONLINE;
470 else if (status & ZFCP_STATUS_ADAPTER_LINK_UNPLUGGED)
471 fc_host_port_state(shost) = FC_PORTSTATE_LINKDOWN;
472 else if (status & ZFCP_STATUS_COMMON_ERP_FAILED)
473 fc_host_port_state(shost) = FC_PORTSTATE_ERROR;
474 else
475 fc_host_port_state(shost) = FC_PORTSTATE_UNKNOWN;
476}
477
478static void zfcp_set_rport_dev_loss_tmo(struct fc_rport *rport, u32 timeout)
479{
480 rport->dev_loss_tmo = timeout;
481}
482
483
484
485
486
487static void zfcp_scsi_dev_loss_tmo_callbk(struct fc_rport *rport)
488{
489 struct zfcp_port *port;
490
491 write_lock_irq(&zfcp_data.config_lock);
492 port = rport->dd_data;
493 if (port)
494 port->rport = NULL;
495 write_unlock_irq(&zfcp_data.config_lock);
496}
497
498
499
500
501
502
503
504
505
506static void zfcp_scsi_terminate_rport_io(struct fc_rport *rport)
507{
508 struct zfcp_port *port;
509
510 write_lock_irq(&zfcp_data.config_lock);
511 port = rport->dd_data;
512 if (port)
513 zfcp_port_get(port);
514 write_unlock_irq(&zfcp_data.config_lock);
515
516 if (port) {
517 zfcp_erp_port_reopen(port, 0, "sctrpi1", NULL);
518 zfcp_port_put(port);
519 }
520}
521
522static void zfcp_scsi_rport_register(struct zfcp_port *port)
523{
524 struct fc_rport_identifiers ids;
525 struct fc_rport *rport;
526
527 ids.node_name = port->wwnn;
528 ids.port_name = port->wwpn;
529 ids.port_id = port->d_id;
530 ids.roles = FC_RPORT_ROLE_FCP_TARGET;
531
532 rport = fc_remote_port_add(port->adapter->scsi_host, 0, &ids);
533 if (!rport) {
534 dev_err(&port->adapter->ccw_device->dev,
535 "Registering port 0x%016Lx failed\n",
536 (unsigned long long)port->wwpn);
537 return;
538 }
539
540 rport->dd_data = port;
541 rport->maxframe_size = port->maxframe_size;
542 rport->supported_classes = port->supported_classes;
543 port->rport = rport;
544}
545
546static void zfcp_scsi_rport_block(struct zfcp_port *port)
547{
548 struct fc_rport *rport = port->rport;
549
550 if (rport)
551 fc_remote_port_delete(rport);
552}
553
554void zfcp_scsi_schedule_rport_register(struct zfcp_port *port)
555{
556 zfcp_port_get(port);
557 port->rport_task = RPORT_ADD;
558
559 if (!queue_work(zfcp_data.work_queue, &port->rport_work))
560 zfcp_port_put(port);
561}
562
563void zfcp_scsi_schedule_rport_block(struct zfcp_port *port)
564{
565 zfcp_port_get(port);
566 port->rport_task = RPORT_DEL;
567
568 if (!queue_work(zfcp_data.work_queue, &port->rport_work))
569 zfcp_port_put(port);
570}
571
572void zfcp_scsi_schedule_rports_block(struct zfcp_adapter *adapter)
573{
574 struct zfcp_port *port;
575
576 list_for_each_entry(port, &adapter->port_list_head, list)
577 zfcp_scsi_schedule_rport_block(port);
578}
579
580void zfcp_scsi_rport_work(struct work_struct *work)
581{
582 struct zfcp_port *port = container_of(work, struct zfcp_port,
583 rport_work);
584
585 while (port->rport_task) {
586 if (port->rport_task == RPORT_ADD) {
587 port->rport_task = RPORT_NONE;
588 zfcp_scsi_rport_register(port);
589 } else {
590 port->rport_task = RPORT_NONE;
591 zfcp_scsi_rport_block(port);
592 }
593 }
594
595 zfcp_port_put(port);
596}
597
598
599void zfcp_scsi_scan(struct work_struct *work)
600{
601 struct zfcp_unit *unit = container_of(work, struct zfcp_unit,
602 scsi_work);
603 struct fc_rport *rport;
604
605 flush_work(&unit->port->rport_work);
606 rport = unit->port->rport;
607
608 if (rport && rport->port_state == FC_PORTSTATE_ONLINE)
609 scsi_scan_target(&rport->dev, 0, rport->scsi_target_id,
610 scsilun_to_int((struct scsi_lun *)
611 &unit->fcp_lun), 0);
612
613 zfcp_unit_put(unit);
614}
615
616struct fc_function_template zfcp_transport_functions = {
617 .show_starget_port_id = 1,
618 .show_starget_port_name = 1,
619 .show_starget_node_name = 1,
620 .show_rport_supported_classes = 1,
621 .show_rport_maxframe_size = 1,
622 .show_rport_dev_loss_tmo = 1,
623 .show_host_node_name = 1,
624 .show_host_port_name = 1,
625 .show_host_permanent_port_name = 1,
626 .show_host_supported_classes = 1,
627 .show_host_supported_speeds = 1,
628 .show_host_maxframe_size = 1,
629 .show_host_serial_number = 1,
630 .get_fc_host_stats = zfcp_get_fc_host_stats,
631 .reset_fc_host_stats = zfcp_reset_fc_host_stats,
632 .set_rport_dev_loss_tmo = zfcp_set_rport_dev_loss_tmo,
633 .get_host_port_state = zfcp_get_host_port_state,
634 .dev_loss_tmo_callbk = zfcp_scsi_dev_loss_tmo_callbk,
635 .terminate_rport_io = zfcp_scsi_terminate_rport_io,
636 .show_host_port_state = 1,
637
638
639 .show_host_port_type = 1,
640 .show_host_speed = 1,
641 .show_host_port_id = 1,
642 .disable_target_scan = 1,
643};
644
645struct zfcp_data zfcp_data = {
646 .scsi_host_template = {
647 .name = "zfcp",
648 .module = THIS_MODULE,
649 .proc_name = "zfcp",
650 .slave_alloc = zfcp_scsi_slave_alloc,
651 .slave_configure = zfcp_scsi_slave_configure,
652 .slave_destroy = zfcp_scsi_slave_destroy,
653 .queuecommand = zfcp_scsi_queuecommand,
654 .eh_abort_handler = zfcp_scsi_eh_abort_handler,
655 .eh_device_reset_handler = zfcp_scsi_eh_device_reset_handler,
656 .eh_target_reset_handler = zfcp_scsi_eh_target_reset_handler,
657 .eh_host_reset_handler = zfcp_scsi_eh_host_reset_handler,
658 .can_queue = 4096,
659 .this_id = -1,
660 .sg_tablesize = ZFCP_MAX_SBALES_PER_REQ,
661 .cmd_per_lun = 1,
662 .use_clustering = 1,
663 .sdev_attrs = zfcp_sysfs_sdev_attrs,
664 .max_sectors = (ZFCP_MAX_SBALES_PER_REQ * 8),
665 .shost_attrs = zfcp_sysfs_shost_attrs,
666 },
667};
668
