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 <linux/slab.h>
14 #include <scsi/fc/fc_fcp.h>
15 #include <scsi/scsi_eh.h>
16 #include <asm/atomic.h>
20 #include "zfcp_reqlist.h"
22 static unsigned int default_depth = 32;
23 module_param_named(queue_depth, default_depth, uint, 0600);
24 MODULE_PARM_DESC(queue_depth, "Default queue depth for new SCSI devices");
26 static bool enable_dif;
28 #ifdef CONFIG_ZFCP_DIF
29 module_param_named(dif, enable_dif, bool, 0600);
30 MODULE_PARM_DESC(dif, "Enable DIF/DIX data integrity support");
33 static int zfcp_scsi_change_queue_depth(struct scsi_device *sdev, int depth,
37 case SCSI_QDEPTH_DEFAULT:
38 scsi_adjust_queue_depth(sdev, scsi_get_tag_type(sdev), depth);
40 case SCSI_QDEPTH_QFULL:
41 scsi_track_queue_full(sdev, depth);
43 case SCSI_QDEPTH_RAMP_UP:
44 scsi_adjust_queue_depth(sdev, scsi_get_tag_type(sdev), depth);
49 return sdev->queue_depth;
52 static void zfcp_scsi_slave_destroy(struct scsi_device *sdev)
54 struct zfcp_scsi_dev *zfcp_sdev = sdev_to_zfcp(sdev);
56 zfcp_erp_lun_shutdown_wait(sdev, "scssd_1");
57 put_device(&zfcp_sdev->port->dev);
60 static int zfcp_scsi_slave_configure(struct scsi_device *sdp)
62 if (sdp->tagged_supported)
63 scsi_adjust_queue_depth(sdp, MSG_SIMPLE_TAG, default_depth);
65 scsi_adjust_queue_depth(sdp, 0, 1);
69 static void zfcp_scsi_command_fail(struct scsi_cmnd *scpnt, int result)
71 struct zfcp_adapter *adapter =
72 (struct zfcp_adapter *) scpnt->device->host->hostdata[0];
74 set_host_byte(scpnt, result);
75 zfcp_dbf_scsi_fail_send(adapter->dbf, scpnt);
76 scpnt->scsi_done(scpnt);
79 static int zfcp_scsi_queuecommand(struct scsi_cmnd *scpnt,
80 void (*done) (struct scsi_cmnd *))
82 struct zfcp_scsi_dev *zfcp_sdev = sdev_to_zfcp(scpnt->device);
83 struct zfcp_adapter *adapter = zfcp_sdev->port->adapter;
84 struct fc_rport *rport = starget_to_rport(scsi_target(scpnt->device));
85 int status, scsi_result, ret;
87 /* reset the status for this request */
89 scpnt->host_scribble = NULL;
90 scpnt->scsi_done = done;
92 scsi_result = fc_remote_port_chkready(rport);
93 if (unlikely(scsi_result)) {
94 scpnt->result = scsi_result;
95 zfcp_dbf_scsi_fail_send(adapter->dbf, scpnt);
96 scpnt->scsi_done(scpnt);
100 status = atomic_read(&zfcp_sdev->status);
101 if (unlikely(status & ZFCP_STATUS_COMMON_ERP_FAILED) &&
102 !(atomic_read(&zfcp_sdev->port->status) &
103 ZFCP_STATUS_COMMON_ERP_FAILED)) {
104 /* only LUN access denied, but port is good
105 * not covered by FC transport, have to fail here */
106 zfcp_scsi_command_fail(scpnt, DID_ERROR);
110 if (unlikely(!(status & ZFCP_STATUS_COMMON_UNBLOCKED))) {
111 /* This could be either
112 * open LUN pending: this is temporary, will result in
113 * open LUN or ERP_FAILED, so retry command
114 * call to rport_delete pending: mimic retry from
115 * fc_remote_port_chkready until rport is BLOCKED
117 zfcp_scsi_command_fail(scpnt, DID_IMM_RETRY);
121 ret = zfcp_fsf_fcp_cmnd(scpnt);
122 if (unlikely(ret == -EBUSY))
123 return SCSI_MLQUEUE_DEVICE_BUSY;
124 else if (unlikely(ret < 0))
125 return SCSI_MLQUEUE_HOST_BUSY;
130 static int zfcp_scsi_slave_alloc(struct scsi_device *sdev)
132 struct fc_rport *rport = starget_to_rport(scsi_target(sdev));
133 struct zfcp_adapter *adapter =
134 (struct zfcp_adapter *) sdev->host->hostdata[0];
135 struct zfcp_scsi_dev *zfcp_sdev = sdev_to_zfcp(sdev);
136 struct zfcp_port *port;
137 struct zfcp_unit *unit;
139 port = zfcp_get_port_by_wwpn(adapter, rport->port_name);
143 unit = zfcp_unit_find(port, zfcp_scsi_dev_lun(sdev));
145 put_device(&unit->dev);
147 if (!unit && !(adapter->connection_features & FSF_FEATURE_NPIV_MODE)) {
148 put_device(&port->dev);
152 zfcp_sdev->port = port;
153 zfcp_sdev->latencies.write.channel.min = 0xFFFFFFFF;
154 zfcp_sdev->latencies.write.fabric.min = 0xFFFFFFFF;
155 zfcp_sdev->latencies.read.channel.min = 0xFFFFFFFF;
156 zfcp_sdev->latencies.read.fabric.min = 0xFFFFFFFF;
157 zfcp_sdev->latencies.cmd.channel.min = 0xFFFFFFFF;
158 zfcp_sdev->latencies.cmd.fabric.min = 0xFFFFFFFF;
159 spin_lock_init(&zfcp_sdev->latencies.lock);
161 zfcp_erp_set_lun_status(sdev, ZFCP_STATUS_COMMON_RUNNING);
162 zfcp_erp_lun_reopen(sdev, 0, "scsla_1", NULL);
163 zfcp_erp_wait(port->adapter);
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_fsf_req *old_req, *abrt_req;
175 unsigned long old_reqid = (unsigned long) scpnt->host_scribble;
176 int retval = SUCCESS, ret;
180 /* avoid race condition between late normal completion and abort */
181 write_lock_irqsave(&adapter->abort_lock, flags);
183 old_req = zfcp_reqlist_find(adapter->req_list, old_reqid);
185 write_unlock_irqrestore(&adapter->abort_lock, flags);
186 zfcp_dbf_scsi_abort("lte1", adapter->dbf, scpnt, NULL,
188 return FAILED; /* completion could be in progress */
190 old_req->data = NULL;
192 /* don't access old fsf_req after releasing the abort_lock */
193 write_unlock_irqrestore(&adapter->abort_lock, flags);
196 abrt_req = zfcp_fsf_abort_fcp_cmnd(scpnt);
200 zfcp_erp_wait(adapter);
201 ret = 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,
214 wait_for_completion(&abrt_req->completion);
216 if (abrt_req->status & ZFCP_STATUS_FSFREQ_ABORTSUCCEEDED)
218 else if (abrt_req->status & ZFCP_STATUS_FSFREQ_ABORTNOTNEEDED)
224 zfcp_dbf_scsi_abort(dbf_tag, adapter->dbf, scpnt, abrt_req, old_reqid);
225 zfcp_fsf_req_free(abrt_req);
229 static int zfcp_task_mgmt_function(struct scsi_cmnd *scpnt, u8 tm_flags)
231 struct zfcp_scsi_dev *zfcp_sdev = sdev_to_zfcp(scpnt->device);
232 struct zfcp_adapter *adapter = zfcp_sdev->port->adapter;
233 struct zfcp_fsf_req *fsf_req = NULL;
234 int retval = SUCCESS, ret;
238 fsf_req = zfcp_fsf_fcp_task_mgmt(scpnt, tm_flags);
242 zfcp_erp_wait(adapter);
243 ret = fc_block_scsi_eh(scpnt);
247 if (!(atomic_read(&adapter->status) &
248 ZFCP_STATUS_COMMON_RUNNING)) {
249 zfcp_dbf_scsi_devreset("nres", scpnt, tm_flags);
256 wait_for_completion(&fsf_req->completion);
258 if (fsf_req->status & ZFCP_STATUS_FSFREQ_TMFUNCFAILED) {
259 zfcp_dbf_scsi_devreset("fail", scpnt, tm_flags);
262 zfcp_dbf_scsi_devreset("okay", scpnt, tm_flags);
264 zfcp_fsf_req_free(fsf_req);
268 static int zfcp_scsi_eh_device_reset_handler(struct scsi_cmnd *scpnt)
270 return zfcp_task_mgmt_function(scpnt, FCP_TMF_LUN_RESET);
273 static int zfcp_scsi_eh_target_reset_handler(struct scsi_cmnd *scpnt)
275 return zfcp_task_mgmt_function(scpnt, FCP_TMF_TGT_RESET);
278 static int zfcp_scsi_eh_host_reset_handler(struct scsi_cmnd *scpnt)
280 struct zfcp_scsi_dev *zfcp_sdev = sdev_to_zfcp(scpnt->device);
281 struct zfcp_adapter *adapter = zfcp_sdev->port->adapter;
284 zfcp_erp_adapter_reopen(adapter, 0, "schrh_1", scpnt);
285 zfcp_erp_wait(adapter);
286 ret = fc_block_scsi_eh(scpnt);
293 int zfcp_adapter_scsi_register(struct zfcp_adapter *adapter)
295 struct ccw_dev_id dev_id;
297 if (adapter->scsi_host)
300 ccw_device_get_id(adapter->ccw_device, &dev_id);
301 /* register adapter as SCSI host with mid layer of SCSI stack */
302 adapter->scsi_host = scsi_host_alloc(&zfcp_data.scsi_host_template,
303 sizeof (struct zfcp_adapter *));
304 if (!adapter->scsi_host) {
305 dev_err(&adapter->ccw_device->dev,
306 "Registering the FCP device with the "
307 "SCSI stack failed\n");
311 /* tell the SCSI stack some characteristics of this adapter */
312 adapter->scsi_host->max_id = 511;
313 adapter->scsi_host->max_lun = 0xFFFFFFFF;
314 adapter->scsi_host->max_channel = 0;
315 adapter->scsi_host->unique_id = dev_id.devno;
316 adapter->scsi_host->max_cmd_len = 16; /* in struct fcp_cmnd */
317 adapter->scsi_host->transportt = zfcp_data.scsi_transport_template;
319 adapter->scsi_host->hostdata[0] = (unsigned long) adapter;
321 if (scsi_add_host(adapter->scsi_host, &adapter->ccw_device->dev)) {
322 scsi_host_put(adapter->scsi_host);
329 void zfcp_adapter_scsi_unregister(struct zfcp_adapter *adapter)
331 struct Scsi_Host *shost;
332 struct zfcp_port *port;
334 shost = adapter->scsi_host;
338 read_lock_irq(&adapter->port_list_lock);
339 list_for_each_entry(port, &adapter->port_list, list)
341 read_unlock_irq(&adapter->port_list_lock);
343 fc_remove_host(shost);
344 scsi_remove_host(shost);
345 scsi_host_put(shost);
346 adapter->scsi_host = NULL;
351 static struct fc_host_statistics*
352 zfcp_init_fc_host_stats(struct zfcp_adapter *adapter)
354 struct fc_host_statistics *fc_stats;
356 if (!adapter->fc_stats) {
357 fc_stats = kmalloc(sizeof(*fc_stats), GFP_KERNEL);
360 adapter->fc_stats = fc_stats; /* freed in adapter_release */
362 memset(adapter->fc_stats, 0, sizeof(*adapter->fc_stats));
363 return adapter->fc_stats;
366 static void zfcp_adjust_fc_host_stats(struct fc_host_statistics *fc_stats,
367 struct fsf_qtcb_bottom_port *data,
368 struct fsf_qtcb_bottom_port *old)
370 fc_stats->seconds_since_last_reset =
371 data->seconds_since_last_reset - old->seconds_since_last_reset;
372 fc_stats->tx_frames = data->tx_frames - old->tx_frames;
373 fc_stats->tx_words = data->tx_words - old->tx_words;
374 fc_stats->rx_frames = data->rx_frames - old->rx_frames;
375 fc_stats->rx_words = data->rx_words - old->rx_words;
376 fc_stats->lip_count = data->lip - old->lip;
377 fc_stats->nos_count = data->nos - old->nos;
378 fc_stats->error_frames = data->error_frames - old->error_frames;
379 fc_stats->dumped_frames = data->dumped_frames - old->dumped_frames;
380 fc_stats->link_failure_count = data->link_failure - old->link_failure;
381 fc_stats->loss_of_sync_count = data->loss_of_sync - old->loss_of_sync;
382 fc_stats->loss_of_signal_count =
383 data->loss_of_signal - old->loss_of_signal;
384 fc_stats->prim_seq_protocol_err_count =
385 data->psp_error_counts - old->psp_error_counts;
386 fc_stats->invalid_tx_word_count =
387 data->invalid_tx_words - old->invalid_tx_words;
388 fc_stats->invalid_crc_count = data->invalid_crcs - old->invalid_crcs;
389 fc_stats->fcp_input_requests =
390 data->input_requests - old->input_requests;
391 fc_stats->fcp_output_requests =
392 data->output_requests - old->output_requests;
393 fc_stats->fcp_control_requests =
394 data->control_requests - old->control_requests;
395 fc_stats->fcp_input_megabytes = data->input_mb - old->input_mb;
396 fc_stats->fcp_output_megabytes = data->output_mb - old->output_mb;
399 static void zfcp_set_fc_host_stats(struct fc_host_statistics *fc_stats,
400 struct fsf_qtcb_bottom_port *data)
402 fc_stats->seconds_since_last_reset = data->seconds_since_last_reset;
403 fc_stats->tx_frames = data->tx_frames;
404 fc_stats->tx_words = data->tx_words;
405 fc_stats->rx_frames = data->rx_frames;
406 fc_stats->rx_words = data->rx_words;
407 fc_stats->lip_count = data->lip;
408 fc_stats->nos_count = data->nos;
409 fc_stats->error_frames = data->error_frames;
410 fc_stats->dumped_frames = data->dumped_frames;
411 fc_stats->link_failure_count = data->link_failure;
412 fc_stats->loss_of_sync_count = data->loss_of_sync;
413 fc_stats->loss_of_signal_count = data->loss_of_signal;
414 fc_stats->prim_seq_protocol_err_count = data->psp_error_counts;
415 fc_stats->invalid_tx_word_count = data->invalid_tx_words;
416 fc_stats->invalid_crc_count = data->invalid_crcs;
417 fc_stats->fcp_input_requests = data->input_requests;
418 fc_stats->fcp_output_requests = data->output_requests;
419 fc_stats->fcp_control_requests = data->control_requests;
420 fc_stats->fcp_input_megabytes = data->input_mb;
421 fc_stats->fcp_output_megabytes = data->output_mb;
424 static struct fc_host_statistics *zfcp_get_fc_host_stats(struct Scsi_Host *host)
426 struct zfcp_adapter *adapter;
427 struct fc_host_statistics *fc_stats;
428 struct fsf_qtcb_bottom_port *data;
431 adapter = (struct zfcp_adapter *)host->hostdata[0];
432 fc_stats = zfcp_init_fc_host_stats(adapter);
436 data = kzalloc(sizeof(*data), GFP_KERNEL);
440 ret = zfcp_fsf_exchange_port_data_sync(adapter->qdio, data);
446 if (adapter->stats_reset &&
447 ((jiffies/HZ - adapter->stats_reset) <
448 data->seconds_since_last_reset))
449 zfcp_adjust_fc_host_stats(fc_stats, data,
450 adapter->stats_reset_data);
452 zfcp_set_fc_host_stats(fc_stats, data);
458 static void zfcp_reset_fc_host_stats(struct Scsi_Host *shost)
460 struct zfcp_adapter *adapter;
461 struct fsf_qtcb_bottom_port *data;
464 adapter = (struct zfcp_adapter *)shost->hostdata[0];
465 data = kzalloc(sizeof(*data), GFP_KERNEL);
469 ret = zfcp_fsf_exchange_port_data_sync(adapter->qdio, data);
473 adapter->stats_reset = jiffies/HZ;
474 kfree(adapter->stats_reset_data);
475 adapter->stats_reset_data = data; /* finally freed in
480 static void zfcp_get_host_port_state(struct Scsi_Host *shost)
482 struct zfcp_adapter *adapter =
483 (struct zfcp_adapter *)shost->hostdata[0];
484 int status = atomic_read(&adapter->status);
486 if ((status & ZFCP_STATUS_COMMON_RUNNING) &&
487 !(status & ZFCP_STATUS_ADAPTER_LINK_UNPLUGGED))
488 fc_host_port_state(shost) = FC_PORTSTATE_ONLINE;
489 else if (status & ZFCP_STATUS_ADAPTER_LINK_UNPLUGGED)
490 fc_host_port_state(shost) = FC_PORTSTATE_LINKDOWN;
491 else if (status & ZFCP_STATUS_COMMON_ERP_FAILED)
492 fc_host_port_state(shost) = FC_PORTSTATE_ERROR;
494 fc_host_port_state(shost) = FC_PORTSTATE_UNKNOWN;
497 static void zfcp_set_rport_dev_loss_tmo(struct fc_rport *rport, u32 timeout)
499 rport->dev_loss_tmo = timeout;
503 * zfcp_scsi_terminate_rport_io - Terminate all I/O on a rport
504 * @rport: The FC rport where to teminate I/O
506 * Abort all pending SCSI commands for a port by closing the
507 * port. Using a reopen avoids a conflict with a shutdown
508 * overwriting a reopen. The "forced" ensures that a disappeared port
509 * is not opened again as valid due to the cached plogi data in
512 static void zfcp_scsi_terminate_rport_io(struct fc_rport *rport)
514 struct zfcp_port *port;
515 struct Scsi_Host *shost = rport_to_shost(rport);
516 struct zfcp_adapter *adapter =
517 (struct zfcp_adapter *)shost->hostdata[0];
519 port = zfcp_get_port_by_wwpn(adapter, rport->port_name);
522 zfcp_erp_port_forced_reopen(port, 0, "sctrpi1", NULL);
523 put_device(&port->dev);
527 static void zfcp_scsi_rport_register(struct zfcp_port *port)
529 struct fc_rport_identifiers ids;
530 struct fc_rport *rport;
535 ids.node_name = port->wwnn;
536 ids.port_name = port->wwpn;
537 ids.port_id = port->d_id;
538 ids.roles = FC_RPORT_ROLE_FCP_TARGET;
540 rport = fc_remote_port_add(port->adapter->scsi_host, 0, &ids);
542 dev_err(&port->adapter->ccw_device->dev,
543 "Registering port 0x%016Lx failed\n",
544 (unsigned long long)port->wwpn);
548 rport->maxframe_size = port->maxframe_size;
549 rport->supported_classes = port->supported_classes;
551 port->starget_id = rport->scsi_target_id;
553 zfcp_unit_queue_scsi_scan(port);
556 static void zfcp_scsi_rport_block(struct zfcp_port *port)
558 struct fc_rport *rport = port->rport;
561 fc_remote_port_delete(rport);
566 void zfcp_scsi_schedule_rport_register(struct zfcp_port *port)
568 get_device(&port->dev);
569 port->rport_task = RPORT_ADD;
571 if (!queue_work(port->adapter->work_queue, &port->rport_work))
572 put_device(&port->dev);
575 void zfcp_scsi_schedule_rport_block(struct zfcp_port *port)
577 get_device(&port->dev);
578 port->rport_task = RPORT_DEL;
580 if (port->rport && queue_work(port->adapter->work_queue,
584 put_device(&port->dev);
587 void zfcp_scsi_schedule_rports_block(struct zfcp_adapter *adapter)
590 struct zfcp_port *port;
592 read_lock_irqsave(&adapter->port_list_lock, flags);
593 list_for_each_entry(port, &adapter->port_list, list)
594 zfcp_scsi_schedule_rport_block(port);
595 read_unlock_irqrestore(&adapter->port_list_lock, flags);
598 void zfcp_scsi_rport_work(struct work_struct *work)
600 struct zfcp_port *port = container_of(work, struct zfcp_port,
603 while (port->rport_task) {
604 if (port->rport_task == RPORT_ADD) {
605 port->rport_task = RPORT_NONE;
606 zfcp_scsi_rport_register(port);
608 port->rport_task = RPORT_NONE;
609 zfcp_scsi_rport_block(port);
613 put_device(&port->dev);
617 * zfcp_scsi_set_prot - Configure DIF/DIX support in scsi_host
618 * @adapter: The adapter where to configure DIF/DIX for the SCSI host
620 void zfcp_scsi_set_prot(struct zfcp_adapter *adapter)
622 unsigned int mask = 0;
623 unsigned int data_div;
624 struct Scsi_Host *shost = adapter->scsi_host;
626 data_div = atomic_read(&adapter->status) &
627 ZFCP_STATUS_ADAPTER_DATA_DIV_ENABLED;
630 adapter->adapter_features & FSF_FEATURE_DIF_PROT_TYPE1)
631 mask |= SHOST_DIF_TYPE1_PROTECTION;
633 if (enable_dif && data_div &&
634 adapter->adapter_features & FSF_FEATURE_DIX_PROT_TCPIP) {
635 mask |= SHOST_DIX_TYPE1_PROTECTION;
636 scsi_host_set_guard(shost, SHOST_DIX_GUARD_IP);
637 shost->sg_prot_tablesize = ZFCP_QDIO_MAX_SBALES_PER_REQ / 2;
638 shost->sg_tablesize = ZFCP_QDIO_MAX_SBALES_PER_REQ / 2;
639 shost->max_sectors = ZFCP_QDIO_MAX_SBALES_PER_REQ * 8 / 2;
642 scsi_host_set_prot(shost, mask);
646 * zfcp_scsi_dif_sense_error - Report DIF/DIX error as driver sense error
647 * @scmd: The SCSI command to report the error for
648 * @ascq: The ASCQ to put in the sense buffer
650 * See the error handling in sd_done for the sense codes used here.
651 * Set DID_SOFT_ERROR to retry the request, if possible.
653 void zfcp_scsi_dif_sense_error(struct scsi_cmnd *scmd, int ascq)
655 scsi_build_sense_buffer(1, scmd->sense_buffer,
656 ILLEGAL_REQUEST, 0x10, ascq);
657 set_driver_byte(scmd, DRIVER_SENSE);
658 scmd->result |= SAM_STAT_CHECK_CONDITION;
659 set_host_byte(scmd, DID_SOFT_ERROR);
662 struct fc_function_template zfcp_transport_functions = {
663 .show_starget_port_id = 1,
664 .show_starget_port_name = 1,
665 .show_starget_node_name = 1,
666 .show_rport_supported_classes = 1,
667 .show_rport_maxframe_size = 1,
668 .show_rport_dev_loss_tmo = 1,
669 .show_host_node_name = 1,
670 .show_host_port_name = 1,
671 .show_host_permanent_port_name = 1,
672 .show_host_supported_classes = 1,
673 .show_host_supported_fc4s = 1,
674 .show_host_supported_speeds = 1,
675 .show_host_maxframe_size = 1,
676 .show_host_serial_number = 1,
677 .get_fc_host_stats = zfcp_get_fc_host_stats,
678 .reset_fc_host_stats = zfcp_reset_fc_host_stats,
679 .set_rport_dev_loss_tmo = zfcp_set_rport_dev_loss_tmo,
680 .get_host_port_state = zfcp_get_host_port_state,
681 .terminate_rport_io = zfcp_scsi_terminate_rport_io,
682 .show_host_port_state = 1,
683 .show_host_active_fc4s = 1,
684 .bsg_request = zfcp_fc_exec_bsg_job,
685 .bsg_timeout = zfcp_fc_timeout_bsg_job,
686 /* no functions registered for following dynamic attributes but
687 directly set by LLDD */
688 .show_host_port_type = 1,
689 .show_host_speed = 1,
690 .show_host_port_id = 1,
691 .dd_bsg_size = sizeof(struct zfcp_fsf_ct_els),
694 struct zfcp_data zfcp_data = {
695 .scsi_host_template = {
697 .module = THIS_MODULE,
699 .change_queue_depth = zfcp_scsi_change_queue_depth,
700 .slave_alloc = zfcp_scsi_slave_alloc,
701 .slave_configure = zfcp_scsi_slave_configure,
702 .slave_destroy = zfcp_scsi_slave_destroy,
703 .queuecommand = zfcp_scsi_queuecommand,
704 .eh_abort_handler = zfcp_scsi_eh_abort_handler,
705 .eh_device_reset_handler = zfcp_scsi_eh_device_reset_handler,
706 .eh_target_reset_handler = zfcp_scsi_eh_target_reset_handler,
707 .eh_host_reset_handler = zfcp_scsi_eh_host_reset_handler,
710 .sg_tablesize = ZFCP_QDIO_MAX_SBALES_PER_REQ,
713 .sdev_attrs = zfcp_sysfs_sdev_attrs,
714 .max_sectors = (ZFCP_QDIO_MAX_SBALES_PER_REQ * 8),
715 .dma_boundary = ZFCP_QDIO_SBALE_LEN - 1,
716 .shost_attrs = zfcp_sysfs_shost_attrs,