tjh.dev
Linux kernel mirror (for testing)
git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git
kernel
os
linux
1/*
2 * zfcp device driver
3 *
4 * Interface to Linux SCSI midlayer.
5 *
6 * Copyright IBM Corporation 2002, 2010
7 */
8
9#define KMSG_COMPONENT "zfcp"
10#define pr_fmt(fmt) KMSG_COMPONENT ": " fmt
11
12#include <linux/types.h>
13#include <linux/slab.h>
14#include <scsi/fc/fc_fcp.h>
15#include <asm/atomic.h>
16#include "zfcp_ext.h"
17#include "zfcp_dbf.h"
18#include "zfcp_fc.h"
19#include "zfcp_reqlist.h"
20
21static unsigned int default_depth = 32;
22module_param_named(queue_depth, default_depth, uint, 0600);
23MODULE_PARM_DESC(queue_depth, "Default queue depth for new SCSI devices");
24
25static int zfcp_scsi_change_queue_depth(struct scsi_device *sdev, int depth,
26 int reason)
27{
28 switch (reason) {
29 case SCSI_QDEPTH_DEFAULT:
30 scsi_adjust_queue_depth(sdev, scsi_get_tag_type(sdev), depth);
31 break;
32 case SCSI_QDEPTH_QFULL:
33 scsi_track_queue_full(sdev, depth);
34 break;
35 case SCSI_QDEPTH_RAMP_UP:
36 scsi_adjust_queue_depth(sdev, scsi_get_tag_type(sdev), depth);
37 break;
38 default:
39 return -EOPNOTSUPP;
40 }
41 return sdev->queue_depth;
42}
43
44static void zfcp_scsi_slave_destroy(struct scsi_device *sdpnt)
45{
46 struct zfcp_unit *unit = (struct zfcp_unit *) sdpnt->hostdata;
47 unit->device = NULL;
48 put_device(&unit->dev);
49}
50
51static int zfcp_scsi_slave_configure(struct scsi_device *sdp)
52{
53 if (sdp->tagged_supported)
54 scsi_adjust_queue_depth(sdp, MSG_SIMPLE_TAG, default_depth);
55 else
56 scsi_adjust_queue_depth(sdp, 0, 1);
57 return 0;
58}
59
60static void zfcp_scsi_command_fail(struct scsi_cmnd *scpnt, int result)
61{
62 struct zfcp_adapter *adapter =
63 (struct zfcp_adapter *) scpnt->device->host->hostdata[0];
64
65 set_host_byte(scpnt, result);
66 zfcp_dbf_scsi_fail_send(adapter->dbf, scpnt);
67 scpnt->scsi_done(scpnt);
68}
69
70static int zfcp_scsi_queuecommand(struct scsi_cmnd *scpnt,
71 void (*done) (struct scsi_cmnd *))
72{
73 struct zfcp_unit *unit;
74 struct zfcp_adapter *adapter;
75 int status, scsi_result, ret;
76 struct fc_rport *rport = starget_to_rport(scsi_target(scpnt->device));
77
78 /* reset the status for this request */
79 scpnt->result = 0;
80 scpnt->host_scribble = NULL;
81 scpnt->scsi_done = done;
82
83 /*
84 * figure out adapter and target device
85 * (stored there by zfcp_scsi_slave_alloc)
86 */
87 adapter = (struct zfcp_adapter *) scpnt->device->host->hostdata[0];
88 unit = scpnt->device->hostdata;
89
90 scsi_result = fc_remote_port_chkready(rport);
91 if (unlikely(scsi_result)) {
92 scpnt->result = scsi_result;
93 zfcp_dbf_scsi_fail_send(adapter->dbf, scpnt);
94 scpnt->scsi_done(scpnt);
95 return 0;
96 }
97
98 status = atomic_read(&unit->status);
99 if (unlikely(status & ZFCP_STATUS_COMMON_ERP_FAILED) &&
100 !(atomic_read(&unit->port->status) &
101 ZFCP_STATUS_COMMON_ERP_FAILED)) {
102 /* only unit access denied, but port is good
103 * not covered by FC transport, have to fail here */
104 zfcp_scsi_command_fail(scpnt, DID_ERROR);
105 return 0;
106 }
107
108 if (unlikely(!(status & ZFCP_STATUS_COMMON_UNBLOCKED))) {
109 /* This could be either
110 * open unit pending: this is temporary, will result in
111 * open unit or ERP_FAILED, so retry command
112 * call to rport_delete pending: mimic retry from
113 * fc_remote_port_chkready until rport is BLOCKED
114 */
115 zfcp_scsi_command_fail(scpnt, DID_IMM_RETRY);
116 return 0;
117 }
118
119 ret = zfcp_fsf_send_fcp_command_task(unit, scpnt);
120 if (unlikely(ret == -EBUSY))
121 return SCSI_MLQUEUE_DEVICE_BUSY;
122 else if (unlikely(ret < 0))
123 return SCSI_MLQUEUE_HOST_BUSY;
124
125 return ret;
126}
127
128static struct zfcp_unit *zfcp_unit_lookup(struct zfcp_adapter *adapter,
129 unsigned int id, u64 lun)
130{
131 unsigned long flags;
132 struct zfcp_port *port;
133 struct zfcp_unit *unit = NULL;
134
135 read_lock_irqsave(&adapter->port_list_lock, flags);
136 list_for_each_entry(port, &adapter->port_list, list) {
137 if (!port->rport || (id != port->rport->scsi_target_id))
138 continue;
139 unit = zfcp_get_unit_by_lun(port, lun);
140 if (unit)
141 break;
142 }
143 read_unlock_irqrestore(&adapter->port_list_lock, flags);
144
145 return unit;
146}
147
148static int zfcp_scsi_slave_alloc(struct scsi_device *sdp)
149{
150 struct zfcp_adapter *adapter;
151 struct zfcp_unit *unit;
152 u64 lun;
153
154 adapter = (struct zfcp_adapter *) sdp->host->hostdata[0];
155 if (!adapter)
156 goto out;
157
158 int_to_scsilun(sdp->lun, (struct scsi_lun *)&lun);
159 unit = zfcp_unit_lookup(adapter, sdp->id, lun);
160 if (unit) {
161 sdp->hostdata = unit;
162 unit->device = sdp;
163 return 0;
164 }
165out:
166 return -ENXIO;
167}
168
169static int zfcp_scsi_eh_abort_handler(struct scsi_cmnd *scpnt)
170{
171 struct Scsi_Host *scsi_host = scpnt->device->host;
172 struct zfcp_adapter *adapter =
173 (struct zfcp_adapter *) scsi_host->hostdata[0];
174 struct zfcp_unit *unit = scpnt->device->hostdata;
175 struct zfcp_fsf_req *old_req, *abrt_req;
176 unsigned long flags;
177 unsigned long old_reqid = (unsigned long) scpnt->host_scribble;
178 int retval = SUCCESS;
179 int retry = 3;
180 char *dbf_tag;
181
182 /* avoid race condition between late normal completion and abort */
183 write_lock_irqsave(&adapter->abort_lock, flags);
184
185 old_req = zfcp_reqlist_find(adapter->req_list, old_reqid);
186 if (!old_req) {
187 write_unlock_irqrestore(&adapter->abort_lock, flags);
188 zfcp_dbf_scsi_abort("lte1", adapter->dbf, scpnt, NULL,
189 old_reqid);
190 return FAILED; /* completion could be in progress */
191 }
192 old_req->data = NULL;
193
194 /* don't access old fsf_req after releasing the abort_lock */
195 write_unlock_irqrestore(&adapter->abort_lock, flags);
196
197 while (retry--) {
198 abrt_req = zfcp_fsf_abort_fcp_command(old_reqid, unit);
199 if (abrt_req)
200 break;
201
202 zfcp_erp_wait(adapter);
203 fc_block_scsi_eh(scpnt);
204 if (!(atomic_read(&adapter->status) &
205 ZFCP_STATUS_COMMON_RUNNING)) {
206 zfcp_dbf_scsi_abort("nres", adapter->dbf, scpnt, NULL,
207 old_reqid);
208 return SUCCESS;
209 }
210 }
211 if (!abrt_req)
212 return FAILED;
213
214 wait_for_completion(&abrt_req->completion);
215
216 if (abrt_req->status & ZFCP_STATUS_FSFREQ_ABORTSUCCEEDED)
217 dbf_tag = "okay";
218 else if (abrt_req->status & ZFCP_STATUS_FSFREQ_ABORTNOTNEEDED)
219 dbf_tag = "lte2";
220 else {
221 dbf_tag = "fail";
222 retval = FAILED;
223 }
224 zfcp_dbf_scsi_abort(dbf_tag, adapter->dbf, scpnt, abrt_req, old_reqid);
225 zfcp_fsf_req_free(abrt_req);
226 return retval;
227}
228
229static int zfcp_task_mgmt_function(struct scsi_cmnd *scpnt, u8 tm_flags)
230{
231 struct zfcp_unit *unit = scpnt->device->hostdata;
232 struct zfcp_adapter *adapter = unit->port->adapter;
233 struct zfcp_fsf_req *fsf_req = NULL;
234 int retval = SUCCESS;
235 int retry = 3;
236
237 while (retry--) {
238 fsf_req = zfcp_fsf_send_fcp_ctm(unit, tm_flags);
239 if (fsf_req)
240 break;
241
242 zfcp_erp_wait(adapter);
243 fc_block_scsi_eh(scpnt);
244 if (!(atomic_read(&adapter->status) &
245 ZFCP_STATUS_COMMON_RUNNING)) {
246 zfcp_dbf_scsi_devreset("nres", tm_flags, unit, scpnt);
247 return SUCCESS;
248 }
249 }
250 if (!fsf_req)
251 return FAILED;
252
253 wait_for_completion(&fsf_req->completion);
254
255 if (fsf_req->status & ZFCP_STATUS_FSFREQ_TMFUNCFAILED) {
256 zfcp_dbf_scsi_devreset("fail", tm_flags, unit, scpnt);
257 retval = FAILED;
258 } else
259 zfcp_dbf_scsi_devreset("okay", tm_flags, unit, scpnt);
260
261 zfcp_fsf_req_free(fsf_req);
262 return retval;
263}
264
265static int zfcp_scsi_eh_device_reset_handler(struct scsi_cmnd *scpnt)
266{
267 return zfcp_task_mgmt_function(scpnt, FCP_TMF_LUN_RESET);
268}
269
270static int zfcp_scsi_eh_target_reset_handler(struct scsi_cmnd *scpnt)
271{
272 return zfcp_task_mgmt_function(scpnt, FCP_TMF_TGT_RESET);
273}
274
275static int zfcp_scsi_eh_host_reset_handler(struct scsi_cmnd *scpnt)
276{
277 struct zfcp_unit *unit = scpnt->device->hostdata;
278 struct zfcp_adapter *adapter = unit->port->adapter;
279
280 zfcp_erp_adapter_reopen(adapter, 0, "schrh_1", scpnt);
281 zfcp_erp_wait(adapter);
282 fc_block_scsi_eh(scpnt);
283
284 return SUCCESS;
285}
286
287int zfcp_adapter_scsi_register(struct zfcp_adapter *adapter)
288{
289 struct ccw_dev_id dev_id;
290
291 if (adapter->scsi_host)
292 return 0;
293
294 ccw_device_get_id(adapter->ccw_device, &dev_id);
295 /* register adapter as SCSI host with mid layer of SCSI stack */
296 adapter->scsi_host = scsi_host_alloc(&zfcp_data.scsi_host_template,
297 sizeof (struct zfcp_adapter *));
298 if (!adapter->scsi_host) {
299 dev_err(&adapter->ccw_device->dev,
300 "Registering the FCP device with the "
301 "SCSI stack failed\n");
302 return -EIO;
303 }
304
305 /* tell the SCSI stack some characteristics of this adapter */
306 adapter->scsi_host->max_id = 1;
307 adapter->scsi_host->max_lun = 1;
308 adapter->scsi_host->max_channel = 0;
309 adapter->scsi_host->unique_id = dev_id.devno;
310 adapter->scsi_host->max_cmd_len = 16; /* in struct fcp_cmnd */
311 adapter->scsi_host->transportt = zfcp_data.scsi_transport_template;
312
313 adapter->scsi_host->hostdata[0] = (unsigned long) adapter;
314
315 if (scsi_add_host(adapter->scsi_host, &adapter->ccw_device->dev)) {
316 scsi_host_put(adapter->scsi_host);
317 return -EIO;
318 }
319
320 return 0;
321}
322
323void zfcp_adapter_scsi_unregister(struct zfcp_adapter *adapter)
324{
325 struct Scsi_Host *shost;
326 struct zfcp_port *port;
327
328 shost = adapter->scsi_host;
329 if (!shost)
330 return;
331
332 read_lock_irq(&adapter->port_list_lock);
333 list_for_each_entry(port, &adapter->port_list, list)
334 port->rport = NULL;
335 read_unlock_irq(&adapter->port_list_lock);
336
337 fc_remove_host(shost);
338 scsi_remove_host(shost);
339 scsi_host_put(shost);
340 adapter->scsi_host = NULL;
341
342 return;
343}
344
345static struct fc_host_statistics*
346zfcp_init_fc_host_stats(struct zfcp_adapter *adapter)
347{
348 struct fc_host_statistics *fc_stats;
349
350 if (!adapter->fc_stats) {
351 fc_stats = kmalloc(sizeof(*fc_stats), GFP_KERNEL);
352 if (!fc_stats)
353 return NULL;
354 adapter->fc_stats = fc_stats; /* freed in adapter_release */
355 }
356 memset(adapter->fc_stats, 0, sizeof(*adapter->fc_stats));
357 return adapter->fc_stats;
358}
359
360static void zfcp_adjust_fc_host_stats(struct fc_host_statistics *fc_stats,
361 struct fsf_qtcb_bottom_port *data,
362 struct fsf_qtcb_bottom_port *old)
363{
364 fc_stats->seconds_since_last_reset =
365 data->seconds_since_last_reset - old->seconds_since_last_reset;
366 fc_stats->tx_frames = data->tx_frames - old->tx_frames;
367 fc_stats->tx_words = data->tx_words - old->tx_words;
368 fc_stats->rx_frames = data->rx_frames - old->rx_frames;
369 fc_stats->rx_words = data->rx_words - old->rx_words;
370 fc_stats->lip_count = data->lip - old->lip;
371 fc_stats->nos_count = data->nos - old->nos;
372 fc_stats->error_frames = data->error_frames - old->error_frames;
373 fc_stats->dumped_frames = data->dumped_frames - old->dumped_frames;
374 fc_stats->link_failure_count = data->link_failure - old->link_failure;
375 fc_stats->loss_of_sync_count = data->loss_of_sync - old->loss_of_sync;
376 fc_stats->loss_of_signal_count =
377 data->loss_of_signal - old->loss_of_signal;
378 fc_stats->prim_seq_protocol_err_count =
379 data->psp_error_counts - old->psp_error_counts;
380 fc_stats->invalid_tx_word_count =
381 data->invalid_tx_words - old->invalid_tx_words;
382 fc_stats->invalid_crc_count = data->invalid_crcs - old->invalid_crcs;
383 fc_stats->fcp_input_requests =
384 data->input_requests - old->input_requests;
385 fc_stats->fcp_output_requests =
386 data->output_requests - old->output_requests;
387 fc_stats->fcp_control_requests =
388 data->control_requests - old->control_requests;
389 fc_stats->fcp_input_megabytes = data->input_mb - old->input_mb;
390 fc_stats->fcp_output_megabytes = data->output_mb - old->output_mb;
391}
392
393static void zfcp_set_fc_host_stats(struct fc_host_statistics *fc_stats,
394 struct fsf_qtcb_bottom_port *data)
395{
396 fc_stats->seconds_since_last_reset = data->seconds_since_last_reset;
397 fc_stats->tx_frames = data->tx_frames;
398 fc_stats->tx_words = data->tx_words;
399 fc_stats->rx_frames = data->rx_frames;
400 fc_stats->rx_words = data->rx_words;
401 fc_stats->lip_count = data->lip;
402 fc_stats->nos_count = data->nos;
403 fc_stats->error_frames = data->error_frames;
404 fc_stats->dumped_frames = data->dumped_frames;
405 fc_stats->link_failure_count = data->link_failure;
406 fc_stats->loss_of_sync_count = data->loss_of_sync;
407 fc_stats->loss_of_signal_count = data->loss_of_signal;
408 fc_stats->prim_seq_protocol_err_count = data->psp_error_counts;
409 fc_stats->invalid_tx_word_count = data->invalid_tx_words;
410 fc_stats->invalid_crc_count = data->invalid_crcs;
411 fc_stats->fcp_input_requests = data->input_requests;
412 fc_stats->fcp_output_requests = data->output_requests;
413 fc_stats->fcp_control_requests = data->control_requests;
414 fc_stats->fcp_input_megabytes = data->input_mb;
415 fc_stats->fcp_output_megabytes = data->output_mb;
416}
417
418static struct fc_host_statistics *zfcp_get_fc_host_stats(struct Scsi_Host *host)
419{
420 struct zfcp_adapter *adapter;
421 struct fc_host_statistics *fc_stats;
422 struct fsf_qtcb_bottom_port *data;
423 int ret;
424
425 adapter = (struct zfcp_adapter *)host->hostdata[0];
426 fc_stats = zfcp_init_fc_host_stats(adapter);
427 if (!fc_stats)
428 return NULL;
429
430 data = kzalloc(sizeof(*data), GFP_KERNEL);
431 if (!data)
432 return NULL;
433
434 ret = zfcp_fsf_exchange_port_data_sync(adapter->qdio, data);
435 if (ret) {
436 kfree(data);
437 return NULL;
438 }
439
440 if (adapter->stats_reset &&
441 ((jiffies/HZ - adapter->stats_reset) <
442 data->seconds_since_last_reset))
443 zfcp_adjust_fc_host_stats(fc_stats, data,
444 adapter->stats_reset_data);
445 else
446 zfcp_set_fc_host_stats(fc_stats, data);
447
448 kfree(data);
449 return fc_stats;
450}
451
452static void zfcp_reset_fc_host_stats(struct Scsi_Host *shost)
453{
454 struct zfcp_adapter *adapter;
455 struct fsf_qtcb_bottom_port *data;
456 int ret;
457
458 adapter = (struct zfcp_adapter *)shost->hostdata[0];
459 data = kzalloc(sizeof(*data), GFP_KERNEL);
460 if (!data)
461 return;
462
463 ret = zfcp_fsf_exchange_port_data_sync(adapter->qdio, data);
464 if (ret)
465 kfree(data);
466 else {
467 adapter->stats_reset = jiffies/HZ;
468 kfree(adapter->stats_reset_data);
469 adapter->stats_reset_data = data; /* finally freed in
470 adapter_release */
471 }
472}
473
474static void zfcp_get_host_port_state(struct Scsi_Host *shost)
475{
476 struct zfcp_adapter *adapter =
477 (struct zfcp_adapter *)shost->hostdata[0];
478 int status = atomic_read(&adapter->status);
479
480 if ((status & ZFCP_STATUS_COMMON_RUNNING) &&
481 !(status & ZFCP_STATUS_ADAPTER_LINK_UNPLUGGED))
482 fc_host_port_state(shost) = FC_PORTSTATE_ONLINE;
483 else if (status & ZFCP_STATUS_ADAPTER_LINK_UNPLUGGED)
484 fc_host_port_state(shost) = FC_PORTSTATE_LINKDOWN;
485 else if (status & ZFCP_STATUS_COMMON_ERP_FAILED)
486 fc_host_port_state(shost) = FC_PORTSTATE_ERROR;
487 else
488 fc_host_port_state(shost) = FC_PORTSTATE_UNKNOWN;
489}
490
491static void zfcp_set_rport_dev_loss_tmo(struct fc_rport *rport, u32 timeout)
492{
493 rport->dev_loss_tmo = timeout;
494}
495
496/**
497 * zfcp_scsi_terminate_rport_io - Terminate all I/O on a rport
498 * @rport: The FC rport where to teminate I/O
499 *
500 * Abort all pending SCSI commands for a port by closing the
501 * port. Using a reopen avoiding a conflict with a shutdown
502 * overwriting a reopen.
503 */
504static void zfcp_scsi_terminate_rport_io(struct fc_rport *rport)
505{
506 struct zfcp_port *port;
507 struct Scsi_Host *shost = rport_to_shost(rport);
508 struct zfcp_adapter *adapter =
509 (struct zfcp_adapter *)shost->hostdata[0];
510
511 port = zfcp_get_port_by_wwpn(adapter, rport->port_name);
512
513 if (port) {
514 zfcp_erp_port_reopen(port, 0, "sctrpi1", NULL);
515 put_device(&port->dev);
516 }
517}
518
519static void zfcp_scsi_rport_register(struct zfcp_port *port)
520{
521 struct fc_rport_identifiers ids;
522 struct fc_rport *rport;
523
524 if (port->rport)
525 return;
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->maxframe_size = port->maxframe_size;
541 rport->supported_classes = port->supported_classes;
542 port->rport = rport;
543}
544
545static void zfcp_scsi_rport_block(struct zfcp_port *port)
546{
547 struct fc_rport *rport = port->rport;
548
549 if (rport) {
550 fc_remote_port_delete(rport);
551 port->rport = NULL;
552 }
553}
554
555void zfcp_scsi_schedule_rport_register(struct zfcp_port *port)
556{
557 get_device(&port->dev);
558 port->rport_task = RPORT_ADD;
559
560 if (!queue_work(port->adapter->work_queue, &port->rport_work))
561 put_device(&port->dev);
562}
563
564void zfcp_scsi_schedule_rport_block(struct zfcp_port *port)
565{
566 get_device(&port->dev);
567 port->rport_task = RPORT_DEL;
568
569 if (port->rport && queue_work(port->adapter->work_queue,
570 &port->rport_work))
571 return;
572
573 put_device(&port->dev);
574}
575
576void zfcp_scsi_schedule_rports_block(struct zfcp_adapter *adapter)
577{
578 unsigned long flags;
579 struct zfcp_port *port;
580
581 read_lock_irqsave(&adapter->port_list_lock, flags);
582 list_for_each_entry(port, &adapter->port_list, list)
583 zfcp_scsi_schedule_rport_block(port);
584 read_unlock_irqrestore(&adapter->port_list_lock, flags);
585}
586
587void zfcp_scsi_rport_work(struct work_struct *work)
588{
589 struct zfcp_port *port = container_of(work, struct zfcp_port,
590 rport_work);
591
592 while (port->rport_task) {
593 if (port->rport_task == RPORT_ADD) {
594 port->rport_task = RPORT_NONE;
595 zfcp_scsi_rport_register(port);
596 } else {
597 port->rport_task = RPORT_NONE;
598 zfcp_scsi_rport_block(port);
599 }
600 }
601
602 put_device(&port->dev);
603}
604
605
606void zfcp_scsi_scan(struct work_struct *work)
607{
608 struct zfcp_unit *unit = container_of(work, struct zfcp_unit,
609 scsi_work);
610 struct fc_rport *rport;
611
612 flush_work(&unit->port->rport_work);
613 rport = unit->port->rport;
614
615 if (rport && rport->port_state == FC_PORTSTATE_ONLINE)
616 scsi_scan_target(&rport->dev, 0, rport->scsi_target_id,
617 scsilun_to_int((struct scsi_lun *)
618 &unit->fcp_lun), 0);
619
620 put_device(&unit->dev);
621}
622
623struct fc_function_template zfcp_transport_functions = {
624 .show_starget_port_id = 1,
625 .show_starget_port_name = 1,
626 .show_starget_node_name = 1,
627 .show_rport_supported_classes = 1,
628 .show_rport_maxframe_size = 1,
629 .show_rport_dev_loss_tmo = 1,
630 .show_host_node_name = 1,
631 .show_host_port_name = 1,
632 .show_host_permanent_port_name = 1,
633 .show_host_supported_classes = 1,
634 .show_host_supported_fc4s = 1,
635 .show_host_supported_speeds = 1,
636 .show_host_maxframe_size = 1,
637 .show_host_serial_number = 1,
638 .get_fc_host_stats = zfcp_get_fc_host_stats,
639 .reset_fc_host_stats = zfcp_reset_fc_host_stats,
640 .set_rport_dev_loss_tmo = zfcp_set_rport_dev_loss_tmo,
641 .get_host_port_state = zfcp_get_host_port_state,
642 .terminate_rport_io = zfcp_scsi_terminate_rport_io,
643 .show_host_port_state = 1,
644 .show_host_active_fc4s = 1,
645 .bsg_request = zfcp_fc_exec_bsg_job,
646 .bsg_timeout = zfcp_fc_timeout_bsg_job,
647 /* no functions registered for following dynamic attributes but
648 directly set by LLDD */
649 .show_host_port_type = 1,
650 .show_host_speed = 1,
651 .show_host_port_id = 1,
652 .disable_target_scan = 1,
653 .dd_bsg_size = sizeof(struct zfcp_fsf_ct_els),
654};
655
656struct zfcp_data zfcp_data = {
657 .scsi_host_template = {
658 .name = "zfcp",
659 .module = THIS_MODULE,
660 .proc_name = "zfcp",
661 .change_queue_depth = zfcp_scsi_change_queue_depth,
662 .slave_alloc = zfcp_scsi_slave_alloc,
663 .slave_configure = zfcp_scsi_slave_configure,
664 .slave_destroy = zfcp_scsi_slave_destroy,
665 .queuecommand = zfcp_scsi_queuecommand,
666 .eh_abort_handler = zfcp_scsi_eh_abort_handler,
667 .eh_device_reset_handler = zfcp_scsi_eh_device_reset_handler,
668 .eh_target_reset_handler = zfcp_scsi_eh_target_reset_handler,
669 .eh_host_reset_handler = zfcp_scsi_eh_host_reset_handler,
670 .can_queue = 4096,
671 .this_id = -1,
672 .sg_tablesize = ZFCP_MAX_SBALES_PER_REQ,
673 .cmd_per_lun = 1,
674 .use_clustering = 1,
675 .sdev_attrs = zfcp_sysfs_sdev_attrs,
676 .max_sectors = (ZFCP_MAX_SBALES_PER_REQ * 8),
677 .shost_attrs = zfcp_sysfs_shost_attrs,
678 },
679};