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9#define KMSG_COMPONENT "zfcp"
10#define pr_fmt(fmt) KMSG_COMPONENT ": " fmt
11
12#include <linux/module.h>
13#include <linux/types.h>
14#include <linux/slab.h>
15#include <scsi/fc/fc_fcp.h>
16#include <scsi/scsi_eh.h>
17#include <linux/atomic.h>
18#include "zfcp_ext.h"
19#include "zfcp_dbf.h"
20#include "zfcp_fc.h"
21#include "zfcp_reqlist.h"
22
23static unsigned int default_depth = 32;
24module_param_named(queue_depth, default_depth, uint, 0600);
25MODULE_PARM_DESC(queue_depth, "Default queue depth for new SCSI devices");
26
27static bool enable_dif;
28module_param_named(dif, enable_dif, bool, 0400);
29MODULE_PARM_DESC(dif, "Enable DIF/DIX data integrity support");
30
31static bool allow_lun_scan = 1;
32module_param(allow_lun_scan, bool, 0600);
33MODULE_PARM_DESC(allow_lun_scan, "For NPIV, scan and attach all storage LUNs");
34
35static int zfcp_scsi_change_queue_depth(struct scsi_device *sdev, int depth,
36 int reason)
37{
38 switch (reason) {
39 case SCSI_QDEPTH_DEFAULT:
40 scsi_adjust_queue_depth(sdev, scsi_get_tag_type(sdev), depth);
41 break;
42 case SCSI_QDEPTH_QFULL:
43 scsi_track_queue_full(sdev, depth);
44 break;
45 case SCSI_QDEPTH_RAMP_UP:
46 scsi_adjust_queue_depth(sdev, scsi_get_tag_type(sdev), depth);
47 break;
48 default:
49 return -EOPNOTSUPP;
50 }
51 return sdev->queue_depth;
52}
53
54static void zfcp_scsi_slave_destroy(struct scsi_device *sdev)
55{
56 struct zfcp_scsi_dev *zfcp_sdev = sdev_to_zfcp(sdev);
57
58
59 if (!zfcp_sdev->port)
60 return;
61
62 zfcp_erp_lun_shutdown_wait(sdev, "scssd_1");
63 put_device(&zfcp_sdev->port->dev);
64}
65
66static int zfcp_scsi_slave_configure(struct scsi_device *sdp)
67{
68 if (sdp->tagged_supported)
69 scsi_adjust_queue_depth(sdp, MSG_SIMPLE_TAG, default_depth);
70 else
71 scsi_adjust_queue_depth(sdp, 0, 1);
72 return 0;
73}
74
75static void zfcp_scsi_command_fail(struct scsi_cmnd *scpnt, int result)
76{
77 set_host_byte(scpnt, result);
78 zfcp_dbf_scsi_fail_send(scpnt);
79 scpnt->scsi_done(scpnt);
80}
81
82static
83int zfcp_scsi_queuecommand(struct Scsi_Host *shost, struct scsi_cmnd *scpnt)
84{
85 struct zfcp_scsi_dev *zfcp_sdev = sdev_to_zfcp(scpnt->device);
86 struct fc_rport *rport = starget_to_rport(scsi_target(scpnt->device));
87 int status, scsi_result, ret;
88
89
90 scpnt->result = 0;
91 scpnt->host_scribble = NULL;
92
93 scsi_result = fc_remote_port_chkready(rport);
94 if (unlikely(scsi_result)) {
95 scpnt->result = scsi_result;
96 zfcp_dbf_scsi_fail_send(scpnt);
97 scpnt->scsi_done(scpnt);
98 return 0;
99 }
100
101 status = atomic_read(&zfcp_sdev->status);
102 if (unlikely(status & ZFCP_STATUS_COMMON_ERP_FAILED) &&
103 !(atomic_read(&zfcp_sdev->port->status) &
104 ZFCP_STATUS_COMMON_ERP_FAILED)) {
105
106
107 zfcp_scsi_command_fail(scpnt, DID_ERROR);
108 return 0;
109 }
110
111 if (unlikely(!(status & ZFCP_STATUS_COMMON_UNBLOCKED))) {
112
113
114
115
116
117
118 zfcp_scsi_command_fail(scpnt, DID_IMM_RETRY);
119 return 0;
120 }
121
122 ret = zfcp_fsf_fcp_cmnd(scpnt);
123 if (unlikely(ret == -EBUSY))
124 return SCSI_MLQUEUE_DEVICE_BUSY;
125 else if (unlikely(ret < 0))
126 return SCSI_MLQUEUE_HOST_BUSY;
127
128 return ret;
129}
130
131static int zfcp_scsi_slave_alloc(struct scsi_device *sdev)
132{
133 struct fc_rport *rport = starget_to_rport(scsi_target(sdev));
134 struct zfcp_adapter *adapter =
135 (struct zfcp_adapter *) sdev->host->hostdata[0];
136 struct zfcp_scsi_dev *zfcp_sdev = sdev_to_zfcp(sdev);
137 struct zfcp_port *port;
138 struct zfcp_unit *unit;
139 int npiv = adapter->connection_features & FSF_FEATURE_NPIV_MODE;
140
141 port = zfcp_get_port_by_wwpn(adapter, rport->port_name);
142 if (!port)
143 return -ENXIO;
144
145 unit = zfcp_unit_find(port, zfcp_scsi_dev_lun(sdev));
146 if (unit)
147 put_device(&unit->dev);
148
149 if (!unit && !(allow_lun_scan && npiv)) {
150 put_device(&port->dev);
151 return -ENXIO;
152 }
153
154 zfcp_sdev->port = port;
155 zfcp_sdev->latencies.write.channel.min = 0xFFFFFFFF;
156 zfcp_sdev->latencies.write.fabric.min = 0xFFFFFFFF;
157 zfcp_sdev->latencies.read.channel.min = 0xFFFFFFFF;
158 zfcp_sdev->latencies.read.fabric.min = 0xFFFFFFFF;
159 zfcp_sdev->latencies.cmd.channel.min = 0xFFFFFFFF;
160 zfcp_sdev->latencies.cmd.fabric.min = 0xFFFFFFFF;
161 spin_lock_init(&zfcp_sdev->latencies.lock);
162
163 zfcp_erp_set_lun_status(sdev, ZFCP_STATUS_COMMON_RUNNING);
164 zfcp_erp_lun_reopen(sdev, 0, "scsla_1");
165 zfcp_erp_wait(port->adapter);
166
167 return 0;
168}
169
170static int zfcp_scsi_eh_abort_handler(struct scsi_cmnd *scpnt)
171{
172 struct Scsi_Host *scsi_host = scpnt->device->host;
173 struct zfcp_adapter *adapter =
174 (struct zfcp_adapter *) scsi_host->hostdata[0];
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, ret;
179 int retry = 3;
180 char *dbf_tag;
181
182
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("abrt_or", scpnt, NULL);
189 return FAILED;
190 }
191 old_req->data = NULL;
192
193
194 write_unlock_irqrestore(&adapter->abort_lock, flags);
195
196 while (retry--) {
197 abrt_req = zfcp_fsf_abort_fcp_cmnd(scpnt);
198 if (abrt_req)
199 break;
200
201 zfcp_erp_wait(adapter);
202 ret = fc_block_scsi_eh(scpnt);
203 if (ret) {
204 zfcp_dbf_scsi_abort("abrt_bl", scpnt, NULL);
205 return ret;
206 }
207 if (!(atomic_read(&adapter->status) &
208 ZFCP_STATUS_COMMON_RUNNING)) {
209 zfcp_dbf_scsi_abort("abrt_ru", scpnt, NULL);
210 return SUCCESS;
211 }
212 }
213 if (!abrt_req) {
214 zfcp_dbf_scsi_abort("abrt_ar", scpnt, NULL);
215 return FAILED;
216 }
217
218 wait_for_completion(&abrt_req->completion);
219
220 if (abrt_req->status & ZFCP_STATUS_FSFREQ_ABORTSUCCEEDED)
221 dbf_tag = "abrt_ok";
222 else if (abrt_req->status & ZFCP_STATUS_FSFREQ_ABORTNOTNEEDED)
223 dbf_tag = "abrt_nn";
224 else {
225 dbf_tag = "abrt_fa";
226 retval = FAILED;
227 }
228 zfcp_dbf_scsi_abort(dbf_tag, scpnt, abrt_req);
229 zfcp_fsf_req_free(abrt_req);
230 return retval;
231}
232
233static int zfcp_task_mgmt_function(struct scsi_cmnd *scpnt, u8 tm_flags)
234{
235 struct zfcp_scsi_dev *zfcp_sdev = sdev_to_zfcp(scpnt->device);
236 struct zfcp_adapter *adapter = zfcp_sdev->port->adapter;
237 struct zfcp_fsf_req *fsf_req = NULL;
238 int retval = SUCCESS, ret;
239 int retry = 3;
240
241 while (retry--) {
242 fsf_req = zfcp_fsf_fcp_task_mgmt(scpnt, tm_flags);
243 if (fsf_req)
244 break;
245
246 zfcp_erp_wait(adapter);
247 ret = fc_block_scsi_eh(scpnt);
248 if (ret)
249 return ret;
250
251 if (!(atomic_read(&adapter->status) &
252 ZFCP_STATUS_COMMON_RUNNING)) {
253 zfcp_dbf_scsi_devreset("nres", scpnt, tm_flags);
254 return SUCCESS;
255 }
256 }
257 if (!fsf_req)
258 return FAILED;
259
260 wait_for_completion(&fsf_req->completion);
261
262 if (fsf_req->status & ZFCP_STATUS_FSFREQ_TMFUNCFAILED) {
263 zfcp_dbf_scsi_devreset("fail", scpnt, tm_flags);
264 retval = FAILED;
265 } else
266 zfcp_dbf_scsi_devreset("okay", scpnt, tm_flags);
267
268 zfcp_fsf_req_free(fsf_req);
269 return retval;
270}
271
272static int zfcp_scsi_eh_device_reset_handler(struct scsi_cmnd *scpnt)
273{
274 return zfcp_task_mgmt_function(scpnt, FCP_TMF_LUN_RESET);
275}
276
277static int zfcp_scsi_eh_target_reset_handler(struct scsi_cmnd *scpnt)
278{
279 return zfcp_task_mgmt_function(scpnt, FCP_TMF_TGT_RESET);
280}
281
282static int zfcp_scsi_eh_host_reset_handler(struct scsi_cmnd *scpnt)
283{
284 struct zfcp_scsi_dev *zfcp_sdev = sdev_to_zfcp(scpnt->device);
285 struct zfcp_adapter *adapter = zfcp_sdev->port->adapter;
286 int ret;
287
288 zfcp_erp_adapter_reopen(adapter, 0, "schrh_1");
289 zfcp_erp_wait(adapter);
290 ret = fc_block_scsi_eh(scpnt);
291 if (ret)
292 return ret;
293
294 return SUCCESS;
295}
296
297struct scsi_transport_template *zfcp_scsi_transport_template;
298
299static struct scsi_host_template zfcp_scsi_host_template = {
300 .module = THIS_MODULE,
301 .name = "zfcp",
302 .queuecommand = zfcp_scsi_queuecommand,
303 .eh_abort_handler = zfcp_scsi_eh_abort_handler,
304 .eh_device_reset_handler = zfcp_scsi_eh_device_reset_handler,
305 .eh_target_reset_handler = zfcp_scsi_eh_target_reset_handler,
306 .eh_host_reset_handler = zfcp_scsi_eh_host_reset_handler,
307 .slave_alloc = zfcp_scsi_slave_alloc,
308 .slave_configure = zfcp_scsi_slave_configure,
309 .slave_destroy = zfcp_scsi_slave_destroy,
310 .change_queue_depth = zfcp_scsi_change_queue_depth,
311 .proc_name = "zfcp",
312 .can_queue = 4096,
313 .this_id = -1,
314 .sg_tablesize = 1,
315 .max_sectors = 8,
316 .dma_boundary = ZFCP_QDIO_SBALE_LEN - 1,
317 .cmd_per_lun = 1,
318 .use_clustering = 1,
319 .shost_attrs = zfcp_sysfs_shost_attrs,
320 .sdev_attrs = zfcp_sysfs_sdev_attrs,
321};
322
323
324
325
326
327int zfcp_scsi_adapter_register(struct zfcp_adapter *adapter)
328{
329 struct ccw_dev_id dev_id;
330
331 if (adapter->scsi_host)
332 return 0;
333
334 ccw_device_get_id(adapter->ccw_device, &dev_id);
335
336 adapter->scsi_host = scsi_host_alloc(&zfcp_scsi_host_template,
337 sizeof (struct zfcp_adapter *));
338 if (!adapter->scsi_host) {
339 dev_err(&adapter->ccw_device->dev,
340 "Registering the FCP device with the "
341 "SCSI stack failed\n");
342 return -EIO;
343 }
344
345
346 adapter->scsi_host->max_id = 511;
347 adapter->scsi_host->max_lun = 0xFFFFFFFF;
348 adapter->scsi_host->max_channel = 0;
349 adapter->scsi_host->unique_id = dev_id.devno;
350 adapter->scsi_host->max_cmd_len = 16;
351 adapter->scsi_host->transportt = zfcp_scsi_transport_template;
352
353 adapter->scsi_host->hostdata[0] = (unsigned long) adapter;
354
355 if (scsi_add_host(adapter->scsi_host, &adapter->ccw_device->dev)) {
356 scsi_host_put(adapter->scsi_host);
357 return -EIO;
358 }
359
360 return 0;
361}
362
363
364
365
366
367void zfcp_scsi_adapter_unregister(struct zfcp_adapter *adapter)
368{
369 struct Scsi_Host *shost;
370 struct zfcp_port *port;
371
372 shost = adapter->scsi_host;
373 if (!shost)
374 return;
375
376 read_lock_irq(&adapter->port_list_lock);
377 list_for_each_entry(port, &adapter->port_list, list)
378 port->rport = NULL;
379 read_unlock_irq(&adapter->port_list_lock);
380
381 fc_remove_host(shost);
382 scsi_remove_host(shost);
383 scsi_host_put(shost);
384 adapter->scsi_host = NULL;
385}
386
387static struct fc_host_statistics*
388zfcp_init_fc_host_stats(struct zfcp_adapter *adapter)
389{
390 struct fc_host_statistics *fc_stats;
391
392 if (!adapter->fc_stats) {
393 fc_stats = kmalloc(sizeof(*fc_stats), GFP_KERNEL);
394 if (!fc_stats)
395 return NULL;
396 adapter->fc_stats = fc_stats;
397 }
398 memset(adapter->fc_stats, 0, sizeof(*adapter->fc_stats));
399 return adapter->fc_stats;
400}
401
402static void zfcp_adjust_fc_host_stats(struct fc_host_statistics *fc_stats,
403 struct fsf_qtcb_bottom_port *data,
404 struct fsf_qtcb_bottom_port *old)
405{
406 fc_stats->seconds_since_last_reset =
407 data->seconds_since_last_reset - old->seconds_since_last_reset;
408 fc_stats->tx_frames = data->tx_frames - old->tx_frames;
409 fc_stats->tx_words = data->tx_words - old->tx_words;
410 fc_stats->rx_frames = data->rx_frames - old->rx_frames;
411 fc_stats->rx_words = data->rx_words - old->rx_words;
412 fc_stats->lip_count = data->lip - old->lip;
413 fc_stats->nos_count = data->nos - old->nos;
414 fc_stats->error_frames = data->error_frames - old->error_frames;
415 fc_stats->dumped_frames = data->dumped_frames - old->dumped_frames;
416 fc_stats->link_failure_count = data->link_failure - old->link_failure;
417 fc_stats->loss_of_sync_count = data->loss_of_sync - old->loss_of_sync;
418 fc_stats->loss_of_signal_count =
419 data->loss_of_signal - old->loss_of_signal;
420 fc_stats->prim_seq_protocol_err_count =
421 data->psp_error_counts - old->psp_error_counts;
422 fc_stats->invalid_tx_word_count =
423 data->invalid_tx_words - old->invalid_tx_words;
424 fc_stats->invalid_crc_count = data->invalid_crcs - old->invalid_crcs;
425 fc_stats->fcp_input_requests =
426 data->input_requests - old->input_requests;
427 fc_stats->fcp_output_requests =
428 data->output_requests - old->output_requests;
429 fc_stats->fcp_control_requests =
430 data->control_requests - old->control_requests;
431 fc_stats->fcp_input_megabytes = data->input_mb - old->input_mb;
432 fc_stats->fcp_output_megabytes = data->output_mb - old->output_mb;
433}
434
435static void zfcp_set_fc_host_stats(struct fc_host_statistics *fc_stats,
436 struct fsf_qtcb_bottom_port *data)
437{
438 fc_stats->seconds_since_last_reset = data->seconds_since_last_reset;
439 fc_stats->tx_frames = data->tx_frames;
440 fc_stats->tx_words = data->tx_words;
441 fc_stats->rx_frames = data->rx_frames;
442 fc_stats->rx_words = data->rx_words;
443 fc_stats->lip_count = data->lip;
444 fc_stats->nos_count = data->nos;
445 fc_stats->error_frames = data->error_frames;
446 fc_stats->dumped_frames = data->dumped_frames;
447 fc_stats->link_failure_count = data->link_failure;
448 fc_stats->loss_of_sync_count = data->loss_of_sync;
449 fc_stats->loss_of_signal_count = data->loss_of_signal;
450 fc_stats->prim_seq_protocol_err_count = data->psp_error_counts;
451 fc_stats->invalid_tx_word_count = data->invalid_tx_words;
452 fc_stats->invalid_crc_count = data->invalid_crcs;
453 fc_stats->fcp_input_requests = data->input_requests;
454 fc_stats->fcp_output_requests = data->output_requests;
455 fc_stats->fcp_control_requests = data->control_requests;
456 fc_stats->fcp_input_megabytes = data->input_mb;
457 fc_stats->fcp_output_megabytes = data->output_mb;
458}
459
460static struct fc_host_statistics *zfcp_get_fc_host_stats(struct Scsi_Host *host)
461{
462 struct zfcp_adapter *adapter;
463 struct fc_host_statistics *fc_stats;
464 struct fsf_qtcb_bottom_port *data;
465 int ret;
466
467 adapter = (struct zfcp_adapter *)host->hostdata[0];
468 fc_stats = zfcp_init_fc_host_stats(adapter);
469 if (!fc_stats)
470 return NULL;
471
472 data = kzalloc(sizeof(*data), GFP_KERNEL);
473 if (!data)
474 return NULL;
475
476 ret = zfcp_fsf_exchange_port_data_sync(adapter->qdio, data);
477 if (ret) {
478 kfree(data);
479 return NULL;
480 }
481
482 if (adapter->stats_reset &&
483 ((jiffies/HZ - adapter->stats_reset) <
484 data->seconds_since_last_reset))
485 zfcp_adjust_fc_host_stats(fc_stats, data,
486 adapter->stats_reset_data);
487 else
488 zfcp_set_fc_host_stats(fc_stats, data);
489
490 kfree(data);
491 return fc_stats;
492}
493
494static void zfcp_reset_fc_host_stats(struct Scsi_Host *shost)
495{
496 struct zfcp_adapter *adapter;
497 struct fsf_qtcb_bottom_port *data;
498 int ret;
499
500 adapter = (struct zfcp_adapter *)shost->hostdata[0];
501 data = kzalloc(sizeof(*data), GFP_KERNEL);
502 if (!data)
503 return;
504
505 ret = zfcp_fsf_exchange_port_data_sync(adapter->qdio, data);
506 if (ret)
507 kfree(data);
508 else {
509 adapter->stats_reset = jiffies/HZ;
510 kfree(adapter->stats_reset_data);
511 adapter->stats_reset_data = data;
512
513 }
514}
515
516static void zfcp_get_host_port_state(struct Scsi_Host *shost)
517{
518 struct zfcp_adapter *adapter =
519 (struct zfcp_adapter *)shost->hostdata[0];
520 int status = atomic_read(&adapter->status);
521
522 if ((status & ZFCP_STATUS_COMMON_RUNNING) &&
523 !(status & ZFCP_STATUS_ADAPTER_LINK_UNPLUGGED))
524 fc_host_port_state(shost) = FC_PORTSTATE_ONLINE;
525 else if (status & ZFCP_STATUS_ADAPTER_LINK_UNPLUGGED)
526 fc_host_port_state(shost) = FC_PORTSTATE_LINKDOWN;
527 else if (status & ZFCP_STATUS_COMMON_ERP_FAILED)
528 fc_host_port_state(shost) = FC_PORTSTATE_ERROR;
529 else
530 fc_host_port_state(shost) = FC_PORTSTATE_UNKNOWN;
531}
532
533static void zfcp_set_rport_dev_loss_tmo(struct fc_rport *rport, u32 timeout)
534{
535 rport->dev_loss_tmo = timeout;
536}
537
538
539
540
541
542
543
544
545
546
547
548static void zfcp_scsi_terminate_rport_io(struct fc_rport *rport)
549{
550 struct zfcp_port *port;
551 struct Scsi_Host *shost = rport_to_shost(rport);
552 struct zfcp_adapter *adapter =
553 (struct zfcp_adapter *)shost->hostdata[0];
554
555 port = zfcp_get_port_by_wwpn(adapter, rport->port_name);
556
557 if (port) {
558 zfcp_erp_port_forced_reopen(port, 0, "sctrpi1");
559 put_device(&port->dev);
560 }
561}
562
563static void zfcp_scsi_rport_register(struct zfcp_port *port)
564{
565 struct fc_rport_identifiers ids;
566 struct fc_rport *rport;
567
568 if (port->rport)
569 return;
570
571 ids.node_name = port->wwnn;
572 ids.port_name = port->wwpn;
573 ids.port_id = port->d_id;
574 ids.roles = FC_RPORT_ROLE_FCP_TARGET;
575
576 rport = fc_remote_port_add(port->adapter->scsi_host, 0, &ids);
577 if (!rport) {
578 dev_err(&port->adapter->ccw_device->dev,
579 "Registering port 0x%016Lx failed\n",
580 (unsigned long long)port->wwpn);
581 return;
582 }
583
584 rport->maxframe_size = port->maxframe_size;
585 rport->supported_classes = port->supported_classes;
586 port->rport = rport;
587 port->starget_id = rport->scsi_target_id;
588
589 zfcp_unit_queue_scsi_scan(port);
590}
591
592static void zfcp_scsi_rport_block(struct zfcp_port *port)
593{
594 struct fc_rport *rport = port->rport;
595
596 if (rport) {
597 fc_remote_port_delete(rport);
598 port->rport = NULL;
599 }
600}
601
602void zfcp_scsi_schedule_rport_register(struct zfcp_port *port)
603{
604 get_device(&port->dev);
605 port->rport_task = RPORT_ADD;
606
607 if (!queue_work(port->adapter->work_queue, &port->rport_work))
608 put_device(&port->dev);
609}
610
611void zfcp_scsi_schedule_rport_block(struct zfcp_port *port)
612{
613 get_device(&port->dev);
614 port->rport_task = RPORT_DEL;
615
616 if (port->rport && queue_work(port->adapter->work_queue,
617 &port->rport_work))
618 return;
619
620 put_device(&port->dev);
621}
622
623void zfcp_scsi_schedule_rports_block(struct zfcp_adapter *adapter)
624{
625 unsigned long flags;
626 struct zfcp_port *port;
627
628 read_lock_irqsave(&adapter->port_list_lock, flags);
629 list_for_each_entry(port, &adapter->port_list, list)
630 zfcp_scsi_schedule_rport_block(port);
631 read_unlock_irqrestore(&adapter->port_list_lock, flags);
632}
633
634void zfcp_scsi_rport_work(struct work_struct *work)
635{
636 struct zfcp_port *port = container_of(work, struct zfcp_port,
637 rport_work);
638
639 while (port->rport_task) {
640 if (port->rport_task == RPORT_ADD) {
641 port->rport_task = RPORT_NONE;
642 zfcp_scsi_rport_register(port);
643 } else {
644 port->rport_task = RPORT_NONE;
645 zfcp_scsi_rport_block(port);
646 }
647 }
648
649 put_device(&port->dev);
650}
651
652
653
654
655
656void zfcp_scsi_set_prot(struct zfcp_adapter *adapter)
657{
658 unsigned int mask = 0;
659 unsigned int data_div;
660 struct Scsi_Host *shost = adapter->scsi_host;
661
662 data_div = atomic_read(&adapter->status) &
663 ZFCP_STATUS_ADAPTER_DATA_DIV_ENABLED;
664
665 if (enable_dif &&
666 adapter->adapter_features & FSF_FEATURE_DIF_PROT_TYPE1)
667 mask |= SHOST_DIF_TYPE1_PROTECTION;
668
669 if (enable_dif && data_div &&
670 adapter->adapter_features & FSF_FEATURE_DIX_PROT_TCPIP) {
671 mask |= SHOST_DIX_TYPE1_PROTECTION;
672 scsi_host_set_guard(shost, SHOST_DIX_GUARD_IP);
673 shost->sg_prot_tablesize = adapter->qdio->max_sbale_per_req / 2;
674 shost->sg_tablesize = adapter->qdio->max_sbale_per_req / 2;
675 shost->max_sectors = shost->sg_tablesize * 8;
676 }
677
678 scsi_host_set_prot(shost, mask);
679}
680
681
682
683
684
685
686
687
688
689void zfcp_scsi_dif_sense_error(struct scsi_cmnd *scmd, int ascq)
690{
691 scsi_build_sense_buffer(1, scmd->sense_buffer,
692 ILLEGAL_REQUEST, 0x10, ascq);
693 set_driver_byte(scmd, DRIVER_SENSE);
694 scmd->result |= SAM_STAT_CHECK_CONDITION;
695 set_host_byte(scmd, DID_SOFT_ERROR);
696}
697
698struct fc_function_template zfcp_transport_functions = {
699 .show_starget_port_id = 1,
700 .show_starget_port_name = 1,
701 .show_starget_node_name = 1,
702 .show_rport_supported_classes = 1,
703 .show_rport_maxframe_size = 1,
704 .show_rport_dev_loss_tmo = 1,
705 .show_host_node_name = 1,
706 .show_host_port_name = 1,
707 .show_host_permanent_port_name = 1,
708 .show_host_supported_classes = 1,
709 .show_host_supported_fc4s = 1,
710 .show_host_supported_speeds = 1,
711 .show_host_maxframe_size = 1,
712 .show_host_serial_number = 1,
713 .get_fc_host_stats = zfcp_get_fc_host_stats,
714 .reset_fc_host_stats = zfcp_reset_fc_host_stats,
715 .set_rport_dev_loss_tmo = zfcp_set_rport_dev_loss_tmo,
716 .get_host_port_state = zfcp_get_host_port_state,
717 .terminate_rport_io = zfcp_scsi_terminate_rport_io,
718 .show_host_port_state = 1,
719 .show_host_active_fc4s = 1,
720 .bsg_request = zfcp_fc_exec_bsg_job,
721 .bsg_timeout = zfcp_fc_timeout_bsg_job,
722
723
724 .show_host_port_type = 1,
725 .show_host_symbolic_name = 1,
726 .show_host_speed = 1,
727 .show_host_port_id = 1,
728 .dd_bsg_size = sizeof(struct zfcp_fsf_ct_els),
729};
730
