1
2
3
4
5
6
7
8
9#define KMSG_COMPONENT "zfcp"
10#define pr_fmt(fmt) KMSG_COMPONENT ": " fmt
11
12#include <asm/atomic.h>
13#include "zfcp_ext.h"
14#include "zfcp_dbf.h"
15
16static unsigned int default_depth = 32;
17module_param_named(queue_depth, default_depth, uint, 0600);
18MODULE_PARM_DESC(queue_depth, "Default queue depth for new SCSI devices");
19
20
21char *zfcp_get_fcp_sns_info_ptr(struct fcp_rsp_iu *fcp_rsp_iu)
22{
23 char *fcp_sns_info_ptr;
24
25 fcp_sns_info_ptr = (unsigned char *) &fcp_rsp_iu[1];
26 if (fcp_rsp_iu->validity.bits.fcp_rsp_len_valid)
27 fcp_sns_info_ptr += fcp_rsp_iu->fcp_rsp_len;
28
29 return fcp_sns_info_ptr;
30}
31
32static int zfcp_scsi_change_queue_depth(struct scsi_device *sdev, int depth)
33{
34 scsi_adjust_queue_depth(sdev, scsi_get_tag_type(sdev), depth);
35 return sdev->queue_depth;
36}
37
38static void zfcp_scsi_slave_destroy(struct scsi_device *sdpnt)
39{
40 struct zfcp_unit *unit = (struct zfcp_unit *) sdpnt->hostdata;
41 unit->device = NULL;
42 zfcp_unit_put(unit);
43}
44
45static int zfcp_scsi_slave_configure(struct scsi_device *sdp)
46{
47 if (sdp->tagged_supported)
48 scsi_adjust_queue_depth(sdp, MSG_SIMPLE_TAG, default_depth);
49 else
50 scsi_adjust_queue_depth(sdp, 0, 1);
51 return 0;
52}
53
54static void zfcp_scsi_command_fail(struct scsi_cmnd *scpnt, int result)
55{
56 struct zfcp_adapter *adapter =
57 (struct zfcp_adapter *) scpnt->device->host->hostdata[0];
58 set_host_byte(scpnt, result);
59 if ((scpnt->device != NULL) && (scpnt->device->host != NULL))
60 zfcp_dbf_scsi_result("fail", 4, adapter->dbf, scpnt, NULL);
61
62 scpnt->scsi_done(scpnt);
63}
64
65static int zfcp_scsi_queuecommand(struct scsi_cmnd *scpnt,
66 void (*done) (struct scsi_cmnd *))
67{
68 struct zfcp_unit *unit;
69 struct zfcp_adapter *adapter;
70 int status, scsi_result, ret;
71 struct fc_rport *rport = starget_to_rport(scsi_target(scpnt->device));
72
73
74 scpnt->result = 0;
75 scpnt->host_scribble = NULL;
76 scpnt->scsi_done = done;
77
78
79
80
81
82 adapter = (struct zfcp_adapter *) scpnt->device->host->hostdata[0];
83 unit = scpnt->device->hostdata;
84
85 BUG_ON(!adapter || (adapter != unit->port->adapter));
86 BUG_ON(!scpnt->scsi_done);
87
88 if (unlikely(!unit)) {
89 zfcp_scsi_command_fail(scpnt, DID_NO_CONNECT);
90 return 0;
91 }
92
93 scsi_result = fc_remote_port_chkready(rport);
94 if (unlikely(scsi_result)) {
95 scpnt->result = scsi_result;
96 zfcp_dbf_scsi_result("fail", 4, adapter->dbf, scpnt, NULL);
97 scpnt->scsi_done(scpnt);
98 return 0;
99 }
100
101 status = atomic_read(&unit->status);
102 if (unlikely((status & ZFCP_STATUS_COMMON_ERP_FAILED) ||
103 !(status & ZFCP_STATUS_COMMON_RUNNING))) {
104 zfcp_scsi_command_fail(scpnt, DID_ERROR);
105 return 0;
106 }
107
108 ret = zfcp_fsf_send_fcp_command_task(unit, scpnt);
109 if (unlikely(ret == -EBUSY))
110 return SCSI_MLQUEUE_DEVICE_BUSY;
111 else if (unlikely(ret < 0))
112 return SCSI_MLQUEUE_HOST_BUSY;
113
114 return ret;
115}
116
117static struct zfcp_unit *zfcp_unit_lookup(struct zfcp_adapter *adapter,
118 int channel, unsigned int id,
119 unsigned int lun)
120{
121 struct zfcp_port *port;
122 struct zfcp_unit *unit;
123 int scsi_lun;
124
125 list_for_each_entry(port, &adapter->port_list_head, list) {
126 if (!port->rport || (id != port->rport->scsi_target_id))
127 continue;
128 list_for_each_entry(unit, &port->unit_list_head, list) {
129 scsi_lun = scsilun_to_int(
130 (struct scsi_lun *)&unit->fcp_lun);
131 if (lun == scsi_lun)
132 return unit;
133 }
134 }
135
136 return NULL;
137}
138
139static int zfcp_scsi_slave_alloc(struct scsi_device *sdp)
140{
141 struct zfcp_adapter *adapter;
142 struct zfcp_unit *unit;
143 unsigned long flags;
144 int retval = -ENXIO;
145
146 adapter = (struct zfcp_adapter *) sdp->host->hostdata[0];
147 if (!adapter)
148 goto out;
149
150 read_lock_irqsave(&zfcp_data.config_lock, flags);
151 unit = zfcp_unit_lookup(adapter, sdp->channel, sdp->id, sdp->lun);
152 if (unit) {
153 sdp->hostdata = unit;
154 unit->device = sdp;
155 zfcp_unit_get(unit);
156 retval = 0;
157 }
158 read_unlock_irqrestore(&zfcp_data.config_lock, flags);
159out:
160 return retval;
161}
162
163static int zfcp_scsi_eh_abort_handler(struct scsi_cmnd *scpnt)
164{
165 struct Scsi_Host *scsi_host = scpnt->device->host;
166 struct zfcp_adapter *adapter =
167 (struct zfcp_adapter *) scsi_host->hostdata[0];
168 struct zfcp_unit *unit = scpnt->device->hostdata;
169 struct zfcp_fsf_req *old_req, *abrt_req;
170 unsigned long flags;
171 unsigned long old_reqid = (unsigned long) scpnt->host_scribble;
172 int retval = SUCCESS;
173 int retry = 3;
174 char *dbf_tag;
175
176
177 write_lock_irqsave(&adapter->abort_lock, flags);
178
179 spin_lock(&adapter->req_list_lock);
180 old_req = zfcp_reqlist_find(adapter, old_reqid);
181 spin_unlock(&adapter->req_list_lock);
182 if (!old_req) {
183 write_unlock_irqrestore(&adapter->abort_lock, flags);
184 zfcp_dbf_scsi_abort("lte1", adapter->dbf, scpnt, NULL,
185 old_reqid);
186 return FAILED;
187 }
188 old_req->data = NULL;
189
190
191 write_unlock_irqrestore(&adapter->abort_lock, flags);
192
193 while (retry--) {
194 abrt_req = zfcp_fsf_abort_fcp_command(old_reqid, unit);
195 if (abrt_req)
196 break;
197
198 zfcp_erp_wait(adapter);
199 if (!(atomic_read(&adapter->status) &
200 ZFCP_STATUS_COMMON_RUNNING)) {
201 zfcp_dbf_scsi_abort("nres", adapter->dbf, scpnt, NULL,
202 old_reqid);
203 return SUCCESS;
204 }
205 }
206 if (!abrt_req)
207 return FAILED;
208
209 wait_for_completion(&abrt_req->completion);
210
211 if (abrt_req->status & ZFCP_STATUS_FSFREQ_ABORTSUCCEEDED)
212 dbf_tag = "okay";
213 else if (abrt_req->status & ZFCP_STATUS_FSFREQ_ABORTNOTNEEDED)
214 dbf_tag = "lte2";
215 else {
216 dbf_tag = "fail";
217 retval = FAILED;
218 }
219 zfcp_dbf_scsi_abort(dbf_tag, adapter->dbf, scpnt, abrt_req, old_reqid);
220 zfcp_fsf_req_free(abrt_req);
221 return retval;
222}
223
224static int zfcp_task_mgmt_function(struct scsi_cmnd *scpnt, u8 tm_flags)
225{
226 struct zfcp_unit *unit = scpnt->device->hostdata;
227 struct zfcp_adapter *adapter = unit->port->adapter;
228 struct zfcp_fsf_req *fsf_req = NULL;
229 int retval = SUCCESS;
230 int retry = 3;
231
232 while (retry--) {
233 fsf_req = zfcp_fsf_send_fcp_ctm(unit, tm_flags);
234 if (fsf_req)
235 break;
236
237 zfcp_erp_wait(adapter);
238 if (!(atomic_read(&adapter->status) &
239 ZFCP_STATUS_COMMON_RUNNING)) {
240 zfcp_dbf_scsi_devreset("nres", tm_flags, unit, scpnt);
241 return SUCCESS;
242 }
243 }
244 if (!fsf_req)
245 return FAILED;
246
247 wait_for_completion(&fsf_req->completion);
248
249 if (fsf_req->status & ZFCP_STATUS_FSFREQ_TMFUNCFAILED) {
250 zfcp_dbf_scsi_devreset("fail", tm_flags, unit, scpnt);
251 retval = FAILED;
252 } else if (fsf_req->status & ZFCP_STATUS_FSFREQ_TMFUNCNOTSUPP) {
253 zfcp_dbf_scsi_devreset("nsup", tm_flags, unit, scpnt);
254 retval = FAILED;
255 } else
256 zfcp_dbf_scsi_devreset("okay", tm_flags, unit, scpnt);
257
258 zfcp_fsf_req_free(fsf_req);
259 return retval;
260}
261
262static int zfcp_scsi_eh_device_reset_handler(struct scsi_cmnd *scpnt)
263{
264 return zfcp_task_mgmt_function(scpnt, FCP_LOGICAL_UNIT_RESET);
265}
266
267static int zfcp_scsi_eh_target_reset_handler(struct scsi_cmnd *scpnt)
268{
269 return zfcp_task_mgmt_function(scpnt, FCP_TARGET_RESET);
270}
271
272static int zfcp_scsi_eh_host_reset_handler(struct scsi_cmnd *scpnt)
273{
274 struct zfcp_unit *unit = scpnt->device->hostdata;
275 struct zfcp_adapter *adapter = unit->port->adapter;
276
277 zfcp_erp_adapter_reopen(adapter, 0, "schrh_1", scpnt);
278 zfcp_erp_wait(adapter);
279
280 return SUCCESS;
281}
282
283int zfcp_adapter_scsi_register(struct zfcp_adapter *adapter)
284{
285 struct ccw_dev_id dev_id;
286
287 if (adapter->scsi_host)
288 return 0;
289
290 ccw_device_get_id(adapter->ccw_device, &dev_id);
291
292 adapter->scsi_host = scsi_host_alloc(&zfcp_data.scsi_host_template,
293 sizeof (struct zfcp_adapter *));
294 if (!adapter->scsi_host) {
295 dev_err(&adapter->ccw_device->dev,
296 "Registering the FCP device with the "
297 "SCSI stack failed\n");
298 return -EIO;
299 }
300
301
302 adapter->scsi_host->max_id = 1;
303 adapter->scsi_host->max_lun = 1;
304 adapter->scsi_host->max_channel = 0;
305 adapter->scsi_host->unique_id = dev_id.devno;
306 adapter->scsi_host->max_cmd_len = 255;
307 adapter->scsi_host->transportt = zfcp_data.scsi_transport_template;
308
309 adapter->scsi_host->hostdata[0] = (unsigned long) adapter;
310
311 if (scsi_add_host(adapter->scsi_host, &adapter->ccw_device->dev)) {
312 scsi_host_put(adapter->scsi_host);
313 return -EIO;
314 }
315
316 return 0;
317}
318
319void zfcp_adapter_scsi_unregister(struct zfcp_adapter *adapter)
320{
321 struct Scsi_Host *shost;
322 struct zfcp_port *port;
323
324 shost = adapter->scsi_host;
325 if (!shost)
326 return;
327
328 read_lock_irq(&zfcp_data.config_lock);
329 list_for_each_entry(port, &adapter->port_list_head, list)
330 if (port->rport)
331 port->rport = NULL;
332
333 read_unlock_irq(&zfcp_data.config_lock);
334 fc_remove_host(shost);
335 scsi_remove_host(shost);
336 scsi_host_put(shost);
337 adapter->scsi_host = NULL;
338
339 return;
340}
341
342static struct fc_host_statistics*
343zfcp_init_fc_host_stats(struct zfcp_adapter *adapter)
344{
345 struct fc_host_statistics *fc_stats;
346
347 if (!adapter->fc_stats) {
348 fc_stats = kmalloc(sizeof(*fc_stats), GFP_KERNEL);
349 if (!fc_stats)
350 return NULL;
351 adapter->fc_stats = fc_stats;
352 }
353 memset(adapter->fc_stats, 0, sizeof(*adapter->fc_stats));
354 return adapter->fc_stats;
355}
356
357static void zfcp_adjust_fc_host_stats(struct fc_host_statistics *fc_stats,
358 struct fsf_qtcb_bottom_port *data,
359 struct fsf_qtcb_bottom_port *old)
360{
361 fc_stats->seconds_since_last_reset =
362 data->seconds_since_last_reset - old->seconds_since_last_reset;
363 fc_stats->tx_frames = data->tx_frames - old->tx_frames;
364 fc_stats->tx_words = data->tx_words - old->tx_words;
365 fc_stats->rx_frames = data->rx_frames - old->rx_frames;
366 fc_stats->rx_words = data->rx_words - old->rx_words;
367 fc_stats->lip_count = data->lip - old->lip;
368 fc_stats->nos_count = data->nos - old->nos;
369 fc_stats->error_frames = data->error_frames - old->error_frames;
370 fc_stats->dumped_frames = data->dumped_frames - old->dumped_frames;
371 fc_stats->link_failure_count = data->link_failure - old->link_failure;
372 fc_stats->loss_of_sync_count = data->loss_of_sync - old->loss_of_sync;
373 fc_stats->loss_of_signal_count =
374 data->loss_of_signal - old->loss_of_signal;
375 fc_stats->prim_seq_protocol_err_count =
376 data->psp_error_counts - old->psp_error_counts;
377 fc_stats->invalid_tx_word_count =
378 data->invalid_tx_words - old->invalid_tx_words;
379 fc_stats->invalid_crc_count = data->invalid_crcs - old->invalid_crcs;
380 fc_stats->fcp_input_requests =
381 data->input_requests - old->input_requests;
382 fc_stats->fcp_output_requests =
383 data->output_requests - old->output_requests;
384 fc_stats->fcp_control_requests =
385 data->control_requests - old->control_requests;
386 fc_stats->fcp_input_megabytes = data->input_mb - old->input_mb;
387 fc_stats->fcp_output_megabytes = data->output_mb - old->output_mb;
388}
389
390static void zfcp_set_fc_host_stats(struct fc_host_statistics *fc_stats,
391 struct fsf_qtcb_bottom_port *data)
392{
393 fc_stats->seconds_since_last_reset = data->seconds_since_last_reset;
394 fc_stats->tx_frames = data->tx_frames;
395 fc_stats->tx_words = data->tx_words;
396 fc_stats->rx_frames = data->rx_frames;
397 fc_stats->rx_words = data->rx_words;
398 fc_stats->lip_count = data->lip;
399 fc_stats->nos_count = data->nos;
400 fc_stats->error_frames = data->error_frames;
401 fc_stats->dumped_frames = data->dumped_frames;
402 fc_stats->link_failure_count = data->link_failure;
403 fc_stats->loss_of_sync_count = data->loss_of_sync;
404 fc_stats->loss_of_signal_count = data->loss_of_signal;
405 fc_stats->prim_seq_protocol_err_count = data->psp_error_counts;
406 fc_stats->invalid_tx_word_count = data->invalid_tx_words;
407 fc_stats->invalid_crc_count = data->invalid_crcs;
408 fc_stats->fcp_input_requests = data->input_requests;
409 fc_stats->fcp_output_requests = data->output_requests;
410 fc_stats->fcp_control_requests = data->control_requests;
411 fc_stats->fcp_input_megabytes = data->input_mb;
412 fc_stats->fcp_output_megabytes = data->output_mb;
413}
414
415static struct fc_host_statistics *zfcp_get_fc_host_stats(struct Scsi_Host *host)
416{
417 struct zfcp_adapter *adapter;
418 struct fc_host_statistics *fc_stats;
419 struct fsf_qtcb_bottom_port *data;
420 int ret;
421
422 adapter = (struct zfcp_adapter *)host->hostdata[0];
423 fc_stats = zfcp_init_fc_host_stats(adapter);
424 if (!fc_stats)
425 return NULL;
426
427 data = kzalloc(sizeof(*data), GFP_KERNEL);
428 if (!data)
429 return NULL;
430
431 ret = zfcp_fsf_exchange_port_data_sync(adapter->qdio, data);
432 if (ret) {
433 kfree(data);
434 return NULL;
435 }
436
437 if (adapter->stats_reset &&
438 ((jiffies/HZ - adapter->stats_reset) <
439 data->seconds_since_last_reset))
440 zfcp_adjust_fc_host_stats(fc_stats, data,
441 adapter->stats_reset_data);
442 else
443 zfcp_set_fc_host_stats(fc_stats, data);
444
445 kfree(data);
446 return fc_stats;
447}
448
449static void zfcp_reset_fc_host_stats(struct Scsi_Host *shost)
450{
451 struct zfcp_adapter *adapter;
452 struct fsf_qtcb_bottom_port *data;
453 int ret;
454
455 adapter = (struct zfcp_adapter *)shost->hostdata[0];
456 data = kzalloc(sizeof(*data), GFP_KERNEL);
457 if (!data)
458 return;
459
460 ret = zfcp_fsf_exchange_port_data_sync(adapter->qdio, data);
461 if (ret)
462 kfree(data);
463 else {
464 adapter->stats_reset = jiffies/HZ;
465 kfree(adapter->stats_reset_data);
466 adapter->stats_reset_data = data;
467
468 }
469}
470
471static void zfcp_get_host_port_state(struct Scsi_Host *shost)
472{
473 struct zfcp_adapter *adapter =
474 (struct zfcp_adapter *)shost->hostdata[0];
475 int status = atomic_read(&adapter->status);
476
477 if ((status & ZFCP_STATUS_COMMON_RUNNING) &&
478 !(status & ZFCP_STATUS_ADAPTER_LINK_UNPLUGGED))
479 fc_host_port_state(shost) = FC_PORTSTATE_ONLINE;
480 else if (status & ZFCP_STATUS_ADAPTER_LINK_UNPLUGGED)
481 fc_host_port_state(shost) = FC_PORTSTATE_LINKDOWN;
482 else if (status & ZFCP_STATUS_COMMON_ERP_FAILED)
483 fc_host_port_state(shost) = FC_PORTSTATE_ERROR;
484 else
485 fc_host_port_state(shost) = FC_PORTSTATE_UNKNOWN;
486}
487
488static void zfcp_set_rport_dev_loss_tmo(struct fc_rport *rport, u32 timeout)
489{
490 rport->dev_loss_tmo = timeout;
491}
492
493
494
495
496
497
498
499
500
501static void zfcp_scsi_terminate_rport_io(struct fc_rport *rport)
502{
503 struct zfcp_port *port;
504 struct Scsi_Host *shost = rport_to_shost(rport);
505 struct zfcp_adapter *adapter =
506 (struct zfcp_adapter *)shost->hostdata[0];
507
508 write_lock_irq(&zfcp_data.config_lock);
509 port = zfcp_get_port_by_wwpn(adapter, rport->port_name);
510 if (port)
511 zfcp_port_get(port);
512 write_unlock_irq(&zfcp_data.config_lock);
513
514 if (port) {
515 zfcp_erp_port_reopen(port, 0, "sctrpi1", NULL);
516 zfcp_port_put(port);
517 }
518}
519
520static void zfcp_scsi_rport_register(struct zfcp_port *port)
521{
522 struct fc_rport_identifiers ids;
523 struct fc_rport *rport;
524
525 if (port->rport)
526 return;
527
528 ids.node_name = port->wwnn;
529 ids.port_name = port->wwpn;
530 ids.port_id = port->d_id;
531 ids.roles = FC_RPORT_ROLE_FCP_TARGET;
532
533 rport = fc_remote_port_add(port->adapter->scsi_host, 0, &ids);
534 if (!rport) {
535 dev_err(&port->adapter->ccw_device->dev,
536 "Registering port 0x%016Lx failed\n",
537 (unsigned long long)port->wwpn);
538 return;
539 }
540
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 port->rport = NULL;
553 }
554}
555
556void zfcp_scsi_schedule_rport_register(struct zfcp_port *port)
557{
558 zfcp_port_get(port);
559 port->rport_task = RPORT_ADD;
560
561 if (!queue_work(port->adapter->work_queue, &port->rport_work))
562 zfcp_port_put(port);
563}
564
565void zfcp_scsi_schedule_rport_block(struct zfcp_port *port)
566{
567 zfcp_port_get(port);
568 port->rport_task = RPORT_DEL;
569
570 if (port->rport && queue_work(port->adapter->work_queue,
571 &port->rport_work))
572 return;
573
574 zfcp_port_put(port);
575}
576
577void zfcp_scsi_schedule_rports_block(struct zfcp_adapter *adapter)
578{
579 struct zfcp_port *port;
580
581 list_for_each_entry(port, &adapter->port_list_head, list)
582 zfcp_scsi_schedule_rport_block(port);
583}
584
585void zfcp_scsi_rport_work(struct work_struct *work)
586{
587 struct zfcp_port *port = container_of(work, struct zfcp_port,
588 rport_work);
589
590 while (port->rport_task) {
591 if (port->rport_task == RPORT_ADD) {
592 port->rport_task = RPORT_NONE;
593 zfcp_scsi_rport_register(port);
594 } else {
595 port->rport_task = RPORT_NONE;
596 zfcp_scsi_rport_block(port);
597 }
598 }
599
600 zfcp_port_put(port);
601}
602
603
604void zfcp_scsi_scan(struct work_struct *work)
605{
606 struct zfcp_unit *unit = container_of(work, struct zfcp_unit,
607 scsi_work);
608 struct fc_rport *rport;
609
610 flush_work(&unit->port->rport_work);
611 rport = unit->port->rport;
612
613 if (rport && rport->port_state == FC_PORTSTATE_ONLINE)
614 scsi_scan_target(&rport->dev, 0, rport->scsi_target_id,
615 scsilun_to_int((struct scsi_lun *)
616 &unit->fcp_lun), 0);
617
618 zfcp_unit_put(unit);
619}
620
621static int zfcp_execute_fc_job(struct fc_bsg_job *job)
622{
623 switch (job->request->msgcode) {
624 case FC_BSG_RPT_ELS:
625 case FC_BSG_HST_ELS_NOLOGIN:
626 return zfcp_fc_execute_els_fc_job(job);
627 case FC_BSG_RPT_CT:
628 case FC_BSG_HST_CT:
629 return zfcp_fc_execute_ct_fc_job(job);
630 default:
631 return -EINVAL;
632 }
633}
634
635struct fc_function_template zfcp_transport_functions = {
636 .show_starget_port_id = 1,
637 .show_starget_port_name = 1,
638 .show_starget_node_name = 1,
639 .show_rport_supported_classes = 1,
640 .show_rport_maxframe_size = 1,
641 .show_rport_dev_loss_tmo = 1,
642 .show_host_node_name = 1,
643 .show_host_port_name = 1,
644 .show_host_permanent_port_name = 1,
645 .show_host_supported_classes = 1,
646 .show_host_supported_speeds = 1,
647 .show_host_maxframe_size = 1,
648 .show_host_serial_number = 1,
649 .get_fc_host_stats = zfcp_get_fc_host_stats,
650 .reset_fc_host_stats = zfcp_reset_fc_host_stats,
651 .set_rport_dev_loss_tmo = zfcp_set_rport_dev_loss_tmo,
652 .get_host_port_state = zfcp_get_host_port_state,
653 .terminate_rport_io = zfcp_scsi_terminate_rport_io,
654 .show_host_port_state = 1,
655 .bsg_request = zfcp_execute_fc_job,
656
657
658 .show_host_port_type = 1,
659 .show_host_speed = 1,
660 .show_host_port_id = 1,
661 .disable_target_scan = 1,
662};
663
664struct zfcp_data zfcp_data = {
665 .scsi_host_template = {
666 .name = "zfcp",
667 .module = THIS_MODULE,
668 .proc_name = "zfcp",
669 .change_queue_depth = zfcp_scsi_change_queue_depth,
670 .slave_alloc = zfcp_scsi_slave_alloc,
671 .slave_configure = zfcp_scsi_slave_configure,
672 .slave_destroy = zfcp_scsi_slave_destroy,
673 .queuecommand = zfcp_scsi_queuecommand,
674 .eh_abort_handler = zfcp_scsi_eh_abort_handler,
675 .eh_device_reset_handler = zfcp_scsi_eh_device_reset_handler,
676 .eh_target_reset_handler = zfcp_scsi_eh_target_reset_handler,
677 .eh_host_reset_handler = zfcp_scsi_eh_host_reset_handler,
678 .can_queue = 4096,
679 .this_id = -1,
680 .sg_tablesize = ZFCP_MAX_SBALES_PER_REQ,
681 .cmd_per_lun = 1,
682 .use_clustering = 1,
683 .sdev_attrs = zfcp_sysfs_sdev_attrs,
684 .max_sectors = (ZFCP_MAX_SBALES_PER_REQ * 8),
685 .shost_attrs = zfcp_sysfs_shost_attrs,
686 },
687};
688
