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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 void zfcp_scsi_slave_destroy(struct scsi_device *sdev)
36{
37 struct zfcp_scsi_dev *zfcp_sdev = sdev_to_zfcp(sdev);
38
39
40 if (!zfcp_sdev->port)
41 return;
42
43 zfcp_erp_lun_shutdown_wait(sdev, "scssd_1");
44 put_device(&zfcp_sdev->port->dev);
45}
46
47static int zfcp_scsi_slave_configure(struct scsi_device *sdp)
48{
49 if (sdp->tagged_supported)
50 scsi_change_queue_depth(sdp, default_depth);
51 return 0;
52}
53
54static void zfcp_scsi_command_fail(struct scsi_cmnd *scpnt, int result)
55{
56 set_host_byte(scpnt, result);
57 zfcp_dbf_scsi_fail_send(scpnt);
58 scpnt->scsi_done(scpnt);
59}
60
61static
62int zfcp_scsi_queuecommand(struct Scsi_Host *shost, struct scsi_cmnd *scpnt)
63{
64 struct zfcp_scsi_dev *zfcp_sdev = sdev_to_zfcp(scpnt->device);
65 struct fc_rport *rport = starget_to_rport(scsi_target(scpnt->device));
66 int status, scsi_result, ret;
67
68
69 scpnt->result = 0;
70 scpnt->host_scribble = NULL;
71
72 scsi_result = fc_remote_port_chkready(rport);
73 if (unlikely(scsi_result)) {
74 scpnt->result = scsi_result;
75 zfcp_dbf_scsi_fail_send(scpnt);
76 scpnt->scsi_done(scpnt);
77 return 0;
78 }
79
80 status = atomic_read(&zfcp_sdev->status);
81 if (unlikely(status & ZFCP_STATUS_COMMON_ERP_FAILED) &&
82 !(atomic_read(&zfcp_sdev->port->status) &
83 ZFCP_STATUS_COMMON_ERP_FAILED)) {
84
85
86 zfcp_scsi_command_fail(scpnt, DID_ERROR);
87 return 0;
88 }
89
90 if (unlikely(!(status & ZFCP_STATUS_COMMON_UNBLOCKED))) {
91
92
93
94
95
96
97 zfcp_scsi_command_fail(scpnt, DID_IMM_RETRY);
98 return 0;
99 }
100
101 ret = zfcp_fsf_fcp_cmnd(scpnt);
102 if (unlikely(ret == -EBUSY))
103 return SCSI_MLQUEUE_DEVICE_BUSY;
104 else if (unlikely(ret < 0))
105 return SCSI_MLQUEUE_HOST_BUSY;
106
107 return ret;
108}
109
110static int zfcp_scsi_slave_alloc(struct scsi_device *sdev)
111{
112 struct fc_rport *rport = starget_to_rport(scsi_target(sdev));
113 struct zfcp_adapter *adapter =
114 (struct zfcp_adapter *) sdev->host->hostdata[0];
115 struct zfcp_scsi_dev *zfcp_sdev = sdev_to_zfcp(sdev);
116 struct zfcp_port *port;
117 struct zfcp_unit *unit;
118 int npiv = adapter->connection_features & FSF_FEATURE_NPIV_MODE;
119
120 port = zfcp_get_port_by_wwpn(adapter, rport->port_name);
121 if (!port)
122 return -ENXIO;
123
124 unit = zfcp_unit_find(port, zfcp_scsi_dev_lun(sdev));
125 if (unit)
126 put_device(&unit->dev);
127
128 if (!unit && !(allow_lun_scan && npiv)) {
129 put_device(&port->dev);
130 return -ENXIO;
131 }
132
133 zfcp_sdev->port = port;
134 zfcp_sdev->latencies.write.channel.min = 0xFFFFFFFF;
135 zfcp_sdev->latencies.write.fabric.min = 0xFFFFFFFF;
136 zfcp_sdev->latencies.read.channel.min = 0xFFFFFFFF;
137 zfcp_sdev->latencies.read.fabric.min = 0xFFFFFFFF;
138 zfcp_sdev->latencies.cmd.channel.min = 0xFFFFFFFF;
139 zfcp_sdev->latencies.cmd.fabric.min = 0xFFFFFFFF;
140 spin_lock_init(&zfcp_sdev->latencies.lock);
141
142 zfcp_erp_set_lun_status(sdev, ZFCP_STATUS_COMMON_RUNNING);
143 zfcp_erp_lun_reopen(sdev, 0, "scsla_1");
144 zfcp_erp_wait(port->adapter);
145
146 return 0;
147}
148
149static int zfcp_scsi_eh_abort_handler(struct scsi_cmnd *scpnt)
150{
151 struct Scsi_Host *scsi_host = scpnt->device->host;
152 struct zfcp_adapter *adapter =
153 (struct zfcp_adapter *) scsi_host->hostdata[0];
154 struct zfcp_fsf_req *old_req, *abrt_req;
155 unsigned long flags;
156 unsigned long old_reqid = (unsigned long) scpnt->host_scribble;
157 int retval = SUCCESS, ret;
158 int retry = 3;
159 char *dbf_tag;
160
161
162 write_lock_irqsave(&adapter->abort_lock, flags);
163
164 old_req = zfcp_reqlist_find(adapter->req_list, old_reqid);
165 if (!old_req) {
166 write_unlock_irqrestore(&adapter->abort_lock, flags);
167 zfcp_dbf_scsi_abort("abrt_or", scpnt, NULL);
168 return FAILED;
169 }
170 old_req->data = NULL;
171
172
173 write_unlock_irqrestore(&adapter->abort_lock, flags);
174
175 while (retry--) {
176 abrt_req = zfcp_fsf_abort_fcp_cmnd(scpnt);
177 if (abrt_req)
178 break;
179
180 zfcp_erp_wait(adapter);
181 ret = fc_block_scsi_eh(scpnt);
182 if (ret) {
183 zfcp_dbf_scsi_abort("abrt_bl", scpnt, NULL);
184 return ret;
185 }
186 if (!(atomic_read(&adapter->status) &
187 ZFCP_STATUS_COMMON_RUNNING)) {
188 zfcp_dbf_scsi_abort("abrt_ru", scpnt, NULL);
189 return SUCCESS;
190 }
191 }
192 if (!abrt_req) {
193 zfcp_dbf_scsi_abort("abrt_ar", scpnt, NULL);
194 return FAILED;
195 }
196
197 wait_for_completion(&abrt_req->completion);
198
199 if (abrt_req->status & ZFCP_STATUS_FSFREQ_ABORTSUCCEEDED)
200 dbf_tag = "abrt_ok";
201 else if (abrt_req->status & ZFCP_STATUS_FSFREQ_ABORTNOTNEEDED)
202 dbf_tag = "abrt_nn";
203 else {
204 dbf_tag = "abrt_fa";
205 retval = FAILED;
206 }
207 zfcp_dbf_scsi_abort(dbf_tag, scpnt, abrt_req);
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_scsi_dev *zfcp_sdev = sdev_to_zfcp(scpnt->device);
215 struct zfcp_adapter *adapter = zfcp_sdev->port->adapter;
216 struct zfcp_fsf_req *fsf_req = NULL;
217 int retval = SUCCESS, ret;
218 int retry = 3;
219
220 while (retry--) {
221 fsf_req = zfcp_fsf_fcp_task_mgmt(scpnt, tm_flags);
222 if (fsf_req)
223 break;
224
225 zfcp_erp_wait(adapter);
226 ret = fc_block_scsi_eh(scpnt);
227 if (ret)
228 return ret;
229
230 if (!(atomic_read(&adapter->status) &
231 ZFCP_STATUS_COMMON_RUNNING)) {
232 zfcp_dbf_scsi_devreset("nres", scpnt, tm_flags);
233 return SUCCESS;
234 }
235 }
236 if (!fsf_req)
237 return FAILED;
238
239 wait_for_completion(&fsf_req->completion);
240
241 if (fsf_req->status & ZFCP_STATUS_FSFREQ_TMFUNCFAILED) {
242 zfcp_dbf_scsi_devreset("fail", scpnt, tm_flags);
243 retval = FAILED;
244 } else
245 zfcp_dbf_scsi_devreset("okay", scpnt, tm_flags);
246
247 zfcp_fsf_req_free(fsf_req);
248 return retval;
249}
250
251static int zfcp_scsi_eh_device_reset_handler(struct scsi_cmnd *scpnt)
252{
253 return zfcp_task_mgmt_function(scpnt, FCP_TMF_LUN_RESET);
254}
255
256static int zfcp_scsi_eh_target_reset_handler(struct scsi_cmnd *scpnt)
257{
258 return zfcp_task_mgmt_function(scpnt, FCP_TMF_TGT_RESET);
259}
260
261static int zfcp_scsi_eh_host_reset_handler(struct scsi_cmnd *scpnt)
262{
263 struct zfcp_scsi_dev *zfcp_sdev = sdev_to_zfcp(scpnt->device);
264 struct zfcp_adapter *adapter = zfcp_sdev->port->adapter;
265 int ret;
266
267 zfcp_erp_adapter_reopen(adapter, 0, "schrh_1");
268 zfcp_erp_wait(adapter);
269 ret = fc_block_scsi_eh(scpnt);
270 if (ret)
271 return ret;
272
273 return SUCCESS;
274}
275
276struct scsi_transport_template *zfcp_scsi_transport_template;
277
278static struct scsi_host_template zfcp_scsi_host_template = {
279 .module = THIS_MODULE,
280 .name = "zfcp",
281 .queuecommand = zfcp_scsi_queuecommand,
282 .eh_abort_handler = zfcp_scsi_eh_abort_handler,
283 .eh_device_reset_handler = zfcp_scsi_eh_device_reset_handler,
284 .eh_target_reset_handler = zfcp_scsi_eh_target_reset_handler,
285 .eh_host_reset_handler = zfcp_scsi_eh_host_reset_handler,
286 .slave_alloc = zfcp_scsi_slave_alloc,
287 .slave_configure = zfcp_scsi_slave_configure,
288 .slave_destroy = zfcp_scsi_slave_destroy,
289 .change_queue_depth = scsi_change_queue_depth,
290 .proc_name = "zfcp",
291 .can_queue = 4096,
292 .this_id = -1,
293 .sg_tablesize = (((QDIO_MAX_ELEMENTS_PER_BUFFER - 1)
294 * ZFCP_QDIO_MAX_SBALS_PER_REQ) - 2),
295
296 .max_sectors = (((QDIO_MAX_ELEMENTS_PER_BUFFER - 1)
297 * ZFCP_QDIO_MAX_SBALS_PER_REQ) - 2) * 8,
298
299 .dma_boundary = ZFCP_QDIO_SBALE_LEN - 1,
300 .cmd_per_lun = 1,
301 .use_clustering = 1,
302 .shost_attrs = zfcp_sysfs_shost_attrs,
303 .sdev_attrs = zfcp_sysfs_sdev_attrs,
304 .track_queue_depth = 1,
305};
306
307
308
309
310
311int zfcp_scsi_adapter_register(struct zfcp_adapter *adapter)
312{
313 struct ccw_dev_id dev_id;
314
315 if (adapter->scsi_host)
316 return 0;
317
318 ccw_device_get_id(adapter->ccw_device, &dev_id);
319
320 adapter->scsi_host = scsi_host_alloc(&zfcp_scsi_host_template,
321 sizeof (struct zfcp_adapter *));
322 if (!adapter->scsi_host) {
323 dev_err(&adapter->ccw_device->dev,
324 "Registering the FCP device with the "
325 "SCSI stack failed\n");
326 return -EIO;
327 }
328
329
330 adapter->scsi_host->max_id = 511;
331 adapter->scsi_host->max_lun = 0xFFFFFFFF;
332 adapter->scsi_host->max_channel = 0;
333 adapter->scsi_host->unique_id = dev_id.devno;
334 adapter->scsi_host->max_cmd_len = 16;
335 adapter->scsi_host->transportt = zfcp_scsi_transport_template;
336
337 adapter->scsi_host->hostdata[0] = (unsigned long) adapter;
338
339 if (scsi_add_host(adapter->scsi_host, &adapter->ccw_device->dev)) {
340 scsi_host_put(adapter->scsi_host);
341 return -EIO;
342 }
343
344 return 0;
345}
346
347
348
349
350
351void zfcp_scsi_adapter_unregister(struct zfcp_adapter *adapter)
352{
353 struct Scsi_Host *shost;
354 struct zfcp_port *port;
355
356 shost = adapter->scsi_host;
357 if (!shost)
358 return;
359
360 read_lock_irq(&adapter->port_list_lock);
361 list_for_each_entry(port, &adapter->port_list, list)
362 port->rport = NULL;
363 read_unlock_irq(&adapter->port_list_lock);
364
365 fc_remove_host(shost);
366 scsi_remove_host(shost);
367 scsi_host_put(shost);
368 adapter->scsi_host = NULL;
369}
370
371static struct fc_host_statistics*
372zfcp_init_fc_host_stats(struct zfcp_adapter *adapter)
373{
374 struct fc_host_statistics *fc_stats;
375
376 if (!adapter->fc_stats) {
377 fc_stats = kmalloc(sizeof(*fc_stats), GFP_KERNEL);
378 if (!fc_stats)
379 return NULL;
380 adapter->fc_stats = fc_stats;
381 }
382 memset(adapter->fc_stats, 0, sizeof(*adapter->fc_stats));
383 return adapter->fc_stats;
384}
385
386static void zfcp_adjust_fc_host_stats(struct fc_host_statistics *fc_stats,
387 struct fsf_qtcb_bottom_port *data,
388 struct fsf_qtcb_bottom_port *old)
389{
390 fc_stats->seconds_since_last_reset =
391 data->seconds_since_last_reset - old->seconds_since_last_reset;
392 fc_stats->tx_frames = data->tx_frames - old->tx_frames;
393 fc_stats->tx_words = data->tx_words - old->tx_words;
394 fc_stats->rx_frames = data->rx_frames - old->rx_frames;
395 fc_stats->rx_words = data->rx_words - old->rx_words;
396 fc_stats->lip_count = data->lip - old->lip;
397 fc_stats->nos_count = data->nos - old->nos;
398 fc_stats->error_frames = data->error_frames - old->error_frames;
399 fc_stats->dumped_frames = data->dumped_frames - old->dumped_frames;
400 fc_stats->link_failure_count = data->link_failure - old->link_failure;
401 fc_stats->loss_of_sync_count = data->loss_of_sync - old->loss_of_sync;
402 fc_stats->loss_of_signal_count =
403 data->loss_of_signal - old->loss_of_signal;
404 fc_stats->prim_seq_protocol_err_count =
405 data->psp_error_counts - old->psp_error_counts;
406 fc_stats->invalid_tx_word_count =
407 data->invalid_tx_words - old->invalid_tx_words;
408 fc_stats->invalid_crc_count = data->invalid_crcs - old->invalid_crcs;
409 fc_stats->fcp_input_requests =
410 data->input_requests - old->input_requests;
411 fc_stats->fcp_output_requests =
412 data->output_requests - old->output_requests;
413 fc_stats->fcp_control_requests =
414 data->control_requests - old->control_requests;
415 fc_stats->fcp_input_megabytes = data->input_mb - old->input_mb;
416 fc_stats->fcp_output_megabytes = data->output_mb - old->output_mb;
417}
418
419static void zfcp_set_fc_host_stats(struct fc_host_statistics *fc_stats,
420 struct fsf_qtcb_bottom_port *data)
421{
422 fc_stats->seconds_since_last_reset = data->seconds_since_last_reset;
423 fc_stats->tx_frames = data->tx_frames;
424 fc_stats->tx_words = data->tx_words;
425 fc_stats->rx_frames = data->rx_frames;
426 fc_stats->rx_words = data->rx_words;
427 fc_stats->lip_count = data->lip;
428 fc_stats->nos_count = data->nos;
429 fc_stats->error_frames = data->error_frames;
430 fc_stats->dumped_frames = data->dumped_frames;
431 fc_stats->link_failure_count = data->link_failure;
432 fc_stats->loss_of_sync_count = data->loss_of_sync;
433 fc_stats->loss_of_signal_count = data->loss_of_signal;
434 fc_stats->prim_seq_protocol_err_count = data->psp_error_counts;
435 fc_stats->invalid_tx_word_count = data->invalid_tx_words;
436 fc_stats->invalid_crc_count = data->invalid_crcs;
437 fc_stats->fcp_input_requests = data->input_requests;
438 fc_stats->fcp_output_requests = data->output_requests;
439 fc_stats->fcp_control_requests = data->control_requests;
440 fc_stats->fcp_input_megabytes = data->input_mb;
441 fc_stats->fcp_output_megabytes = data->output_mb;
442}
443
444static struct fc_host_statistics *zfcp_get_fc_host_stats(struct Scsi_Host *host)
445{
446 struct zfcp_adapter *adapter;
447 struct fc_host_statistics *fc_stats;
448 struct fsf_qtcb_bottom_port *data;
449 int ret;
450
451 adapter = (struct zfcp_adapter *)host->hostdata[0];
452 fc_stats = zfcp_init_fc_host_stats(adapter);
453 if (!fc_stats)
454 return NULL;
455
456 data = kzalloc(sizeof(*data), GFP_KERNEL);
457 if (!data)
458 return NULL;
459
460 ret = zfcp_fsf_exchange_port_data_sync(adapter->qdio, data);
461 if (ret) {
462 kfree(data);
463 return NULL;
464 }
465
466 if (adapter->stats_reset &&
467 ((jiffies/HZ - adapter->stats_reset) <
468 data->seconds_since_last_reset))
469 zfcp_adjust_fc_host_stats(fc_stats, data,
470 adapter->stats_reset_data);
471 else
472 zfcp_set_fc_host_stats(fc_stats, data);
473
474 kfree(data);
475 return fc_stats;
476}
477
478static void zfcp_reset_fc_host_stats(struct Scsi_Host *shost)
479{
480 struct zfcp_adapter *adapter;
481 struct fsf_qtcb_bottom_port *data;
482 int ret;
483
484 adapter = (struct zfcp_adapter *)shost->hostdata[0];
485 data = kzalloc(sizeof(*data), GFP_KERNEL);
486 if (!data)
487 return;
488
489 ret = zfcp_fsf_exchange_port_data_sync(adapter->qdio, data);
490 if (ret)
491 kfree(data);
492 else {
493 adapter->stats_reset = jiffies/HZ;
494 kfree(adapter->stats_reset_data);
495 adapter->stats_reset_data = data;
496
497 }
498}
499
500static void zfcp_get_host_port_state(struct Scsi_Host *shost)
501{
502 struct zfcp_adapter *adapter =
503 (struct zfcp_adapter *)shost->hostdata[0];
504 int status = atomic_read(&adapter->status);
505
506 if ((status & ZFCP_STATUS_COMMON_RUNNING) &&
507 !(status & ZFCP_STATUS_ADAPTER_LINK_UNPLUGGED))
508 fc_host_port_state(shost) = FC_PORTSTATE_ONLINE;
509 else if (status & ZFCP_STATUS_ADAPTER_LINK_UNPLUGGED)
510 fc_host_port_state(shost) = FC_PORTSTATE_LINKDOWN;
511 else if (status & ZFCP_STATUS_COMMON_ERP_FAILED)
512 fc_host_port_state(shost) = FC_PORTSTATE_ERROR;
513 else
514 fc_host_port_state(shost) = FC_PORTSTATE_UNKNOWN;
515}
516
517static void zfcp_set_rport_dev_loss_tmo(struct fc_rport *rport, u32 timeout)
518{
519 rport->dev_loss_tmo = timeout;
520}
521
522
523
524
525
526
527
528
529
530
531
532static void zfcp_scsi_terminate_rport_io(struct fc_rport *rport)
533{
534 struct zfcp_port *port;
535 struct Scsi_Host *shost = rport_to_shost(rport);
536 struct zfcp_adapter *adapter =
537 (struct zfcp_adapter *)shost->hostdata[0];
538
539 port = zfcp_get_port_by_wwpn(adapter, rport->port_name);
540
541 if (port) {
542 zfcp_erp_port_forced_reopen(port, 0, "sctrpi1");
543 put_device(&port->dev);
544 }
545}
546
547static void zfcp_scsi_rport_register(struct zfcp_port *port)
548{
549 struct fc_rport_identifiers ids;
550 struct fc_rport *rport;
551
552 if (port->rport)
553 return;
554
555 ids.node_name = port->wwnn;
556 ids.port_name = port->wwpn;
557 ids.port_id = port->d_id;
558 ids.roles = FC_RPORT_ROLE_FCP_TARGET;
559
560 rport = fc_remote_port_add(port->adapter->scsi_host, 0, &ids);
561 if (!rport) {
562 dev_err(&port->adapter->ccw_device->dev,
563 "Registering port 0x%016Lx failed\n",
564 (unsigned long long)port->wwpn);
565 return;
566 }
567
568 rport->maxframe_size = port->maxframe_size;
569 rport->supported_classes = port->supported_classes;
570 port->rport = rport;
571 port->starget_id = rport->scsi_target_id;
572
573 zfcp_unit_queue_scsi_scan(port);
574}
575
576static void zfcp_scsi_rport_block(struct zfcp_port *port)
577{
578 struct fc_rport *rport = port->rport;
579
580 if (rport) {
581 fc_remote_port_delete(rport);
582 port->rport = NULL;
583 }
584}
585
586void zfcp_scsi_schedule_rport_register(struct zfcp_port *port)
587{
588 get_device(&port->dev);
589 port->rport_task = RPORT_ADD;
590
591 if (!queue_work(port->adapter->work_queue, &port->rport_work))
592 put_device(&port->dev);
593}
594
595void zfcp_scsi_schedule_rport_block(struct zfcp_port *port)
596{
597 get_device(&port->dev);
598 port->rport_task = RPORT_DEL;
599
600 if (port->rport && queue_work(port->adapter->work_queue,
601 &port->rport_work))
602 return;
603
604 put_device(&port->dev);
605}
606
607void zfcp_scsi_schedule_rports_block(struct zfcp_adapter *adapter)
608{
609 unsigned long flags;
610 struct zfcp_port *port;
611
612 read_lock_irqsave(&adapter->port_list_lock, flags);
613 list_for_each_entry(port, &adapter->port_list, list)
614 zfcp_scsi_schedule_rport_block(port);
615 read_unlock_irqrestore(&adapter->port_list_lock, flags);
616}
617
618void zfcp_scsi_rport_work(struct work_struct *work)
619{
620 struct zfcp_port *port = container_of(work, struct zfcp_port,
621 rport_work);
622
623 while (port->rport_task) {
624 if (port->rport_task == RPORT_ADD) {
625 port->rport_task = RPORT_NONE;
626 zfcp_scsi_rport_register(port);
627 } else {
628 port->rport_task = RPORT_NONE;
629 zfcp_scsi_rport_block(port);
630 }
631 }
632
633 put_device(&port->dev);
634}
635
636
637
638
639
640void zfcp_scsi_set_prot(struct zfcp_adapter *adapter)
641{
642 unsigned int mask = 0;
643 unsigned int data_div;
644 struct Scsi_Host *shost = adapter->scsi_host;
645
646 data_div = atomic_read(&adapter->status) &
647 ZFCP_STATUS_ADAPTER_DATA_DIV_ENABLED;
648
649 if (enable_dif &&
650 adapter->adapter_features & FSF_FEATURE_DIF_PROT_TYPE1)
651 mask |= SHOST_DIF_TYPE1_PROTECTION;
652
653 if (enable_dif && data_div &&
654 adapter->adapter_features & FSF_FEATURE_DIX_PROT_TCPIP) {
655 mask |= SHOST_DIX_TYPE1_PROTECTION;
656 scsi_host_set_guard(shost, SHOST_DIX_GUARD_IP);
657 shost->sg_prot_tablesize = adapter->qdio->max_sbale_per_req / 2;
658 shost->sg_tablesize = adapter->qdio->max_sbale_per_req / 2;
659 shost->max_sectors = shost->sg_tablesize * 8;
660 }
661
662 scsi_host_set_prot(shost, mask);
663}
664
665
666
667
668
669
670
671
672
673void zfcp_scsi_dif_sense_error(struct scsi_cmnd *scmd, int ascq)
674{
675 scsi_build_sense_buffer(1, scmd->sense_buffer,
676 ILLEGAL_REQUEST, 0x10, ascq);
677 set_driver_byte(scmd, DRIVER_SENSE);
678 scmd->result |= SAM_STAT_CHECK_CONDITION;
679 set_host_byte(scmd, DID_SOFT_ERROR);
680}
681
682struct fc_function_template zfcp_transport_functions = {
683 .show_starget_port_id = 1,
684 .show_starget_port_name = 1,
685 .show_starget_node_name = 1,
686 .show_rport_supported_classes = 1,
687 .show_rport_maxframe_size = 1,
688 .show_rport_dev_loss_tmo = 1,
689 .show_host_node_name = 1,
690 .show_host_port_name = 1,
691 .show_host_permanent_port_name = 1,
692 .show_host_supported_classes = 1,
693 .show_host_supported_fc4s = 1,
694 .show_host_supported_speeds = 1,
695 .show_host_maxframe_size = 1,
696 .show_host_serial_number = 1,
697 .get_fc_host_stats = zfcp_get_fc_host_stats,
698 .reset_fc_host_stats = zfcp_reset_fc_host_stats,
699 .set_rport_dev_loss_tmo = zfcp_set_rport_dev_loss_tmo,
700 .get_host_port_state = zfcp_get_host_port_state,
701 .terminate_rport_io = zfcp_scsi_terminate_rport_io,
702 .show_host_port_state = 1,
703 .show_host_active_fc4s = 1,
704 .bsg_request = zfcp_fc_exec_bsg_job,
705 .bsg_timeout = zfcp_fc_timeout_bsg_job,
706
707
708 .show_host_port_type = 1,
709 .show_host_symbolic_name = 1,
710 .show_host_speed = 1,
711 .show_host_port_id = 1,
712 .dd_bsg_size = sizeof(struct zfcp_fsf_ct_els),
713};
714
