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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 .use_clustering = 1,
301 .shost_attrs = zfcp_sysfs_shost_attrs,
302 .sdev_attrs = zfcp_sysfs_sdev_attrs,
303 .track_queue_depth = 1,
304};
305
306
307
308
309
310int zfcp_scsi_adapter_register(struct zfcp_adapter *adapter)
311{
312 struct ccw_dev_id dev_id;
313
314 if (adapter->scsi_host)
315 return 0;
316
317 ccw_device_get_id(adapter->ccw_device, &dev_id);
318
319 adapter->scsi_host = scsi_host_alloc(&zfcp_scsi_host_template,
320 sizeof (struct zfcp_adapter *));
321 if (!adapter->scsi_host) {
322 dev_err(&adapter->ccw_device->dev,
323 "Registering the FCP device with the "
324 "SCSI stack failed\n");
325 return -EIO;
326 }
327
328
329 adapter->scsi_host->max_id = 511;
330 adapter->scsi_host->max_lun = 0xFFFFFFFF;
331 adapter->scsi_host->max_channel = 0;
332 adapter->scsi_host->unique_id = dev_id.devno;
333 adapter->scsi_host->max_cmd_len = 16;
334 adapter->scsi_host->transportt = zfcp_scsi_transport_template;
335
336 adapter->scsi_host->hostdata[0] = (unsigned long) adapter;
337
338 if (scsi_add_host(adapter->scsi_host, &adapter->ccw_device->dev)) {
339 scsi_host_put(adapter->scsi_host);
340 return -EIO;
341 }
342
343 return 0;
344}
345
346
347
348
349
350void zfcp_scsi_adapter_unregister(struct zfcp_adapter *adapter)
351{
352 struct Scsi_Host *shost;
353 struct zfcp_port *port;
354
355 shost = adapter->scsi_host;
356 if (!shost)
357 return;
358
359 read_lock_irq(&adapter->port_list_lock);
360 list_for_each_entry(port, &adapter->port_list, list)
361 port->rport = NULL;
362 read_unlock_irq(&adapter->port_list_lock);
363
364 fc_remove_host(shost);
365 scsi_remove_host(shost);
366 scsi_host_put(shost);
367 adapter->scsi_host = NULL;
368}
369
370static struct fc_host_statistics*
371zfcp_init_fc_host_stats(struct zfcp_adapter *adapter)
372{
373 struct fc_host_statistics *fc_stats;
374
375 if (!adapter->fc_stats) {
376 fc_stats = kmalloc(sizeof(*fc_stats), GFP_KERNEL);
377 if (!fc_stats)
378 return NULL;
379 adapter->fc_stats = fc_stats;
380 }
381 memset(adapter->fc_stats, 0, sizeof(*adapter->fc_stats));
382 return adapter->fc_stats;
383}
384
385static void zfcp_adjust_fc_host_stats(struct fc_host_statistics *fc_stats,
386 struct fsf_qtcb_bottom_port *data,
387 struct fsf_qtcb_bottom_port *old)
388{
389 fc_stats->seconds_since_last_reset =
390 data->seconds_since_last_reset - old->seconds_since_last_reset;
391 fc_stats->tx_frames = data->tx_frames - old->tx_frames;
392 fc_stats->tx_words = data->tx_words - old->tx_words;
393 fc_stats->rx_frames = data->rx_frames - old->rx_frames;
394 fc_stats->rx_words = data->rx_words - old->rx_words;
395 fc_stats->lip_count = data->lip - old->lip;
396 fc_stats->nos_count = data->nos - old->nos;
397 fc_stats->error_frames = data->error_frames - old->error_frames;
398 fc_stats->dumped_frames = data->dumped_frames - old->dumped_frames;
399 fc_stats->link_failure_count = data->link_failure - old->link_failure;
400 fc_stats->loss_of_sync_count = data->loss_of_sync - old->loss_of_sync;
401 fc_stats->loss_of_signal_count =
402 data->loss_of_signal - old->loss_of_signal;
403 fc_stats->prim_seq_protocol_err_count =
404 data->psp_error_counts - old->psp_error_counts;
405 fc_stats->invalid_tx_word_count =
406 data->invalid_tx_words - old->invalid_tx_words;
407 fc_stats->invalid_crc_count = data->invalid_crcs - old->invalid_crcs;
408 fc_stats->fcp_input_requests =
409 data->input_requests - old->input_requests;
410 fc_stats->fcp_output_requests =
411 data->output_requests - old->output_requests;
412 fc_stats->fcp_control_requests =
413 data->control_requests - old->control_requests;
414 fc_stats->fcp_input_megabytes = data->input_mb - old->input_mb;
415 fc_stats->fcp_output_megabytes = data->output_mb - old->output_mb;
416}
417
418static void zfcp_set_fc_host_stats(struct fc_host_statistics *fc_stats,
419 struct fsf_qtcb_bottom_port *data)
420{
421 fc_stats->seconds_since_last_reset = data->seconds_since_last_reset;
422 fc_stats->tx_frames = data->tx_frames;
423 fc_stats->tx_words = data->tx_words;
424 fc_stats->rx_frames = data->rx_frames;
425 fc_stats->rx_words = data->rx_words;
426 fc_stats->lip_count = data->lip;
427 fc_stats->nos_count = data->nos;
428 fc_stats->error_frames = data->error_frames;
429 fc_stats->dumped_frames = data->dumped_frames;
430 fc_stats->link_failure_count = data->link_failure;
431 fc_stats->loss_of_sync_count = data->loss_of_sync;
432 fc_stats->loss_of_signal_count = data->loss_of_signal;
433 fc_stats->prim_seq_protocol_err_count = data->psp_error_counts;
434 fc_stats->invalid_tx_word_count = data->invalid_tx_words;
435 fc_stats->invalid_crc_count = data->invalid_crcs;
436 fc_stats->fcp_input_requests = data->input_requests;
437 fc_stats->fcp_output_requests = data->output_requests;
438 fc_stats->fcp_control_requests = data->control_requests;
439 fc_stats->fcp_input_megabytes = data->input_mb;
440 fc_stats->fcp_output_megabytes = data->output_mb;
441}
442
443static struct fc_host_statistics *zfcp_get_fc_host_stats(struct Scsi_Host *host)
444{
445 struct zfcp_adapter *adapter;
446 struct fc_host_statistics *fc_stats;
447 struct fsf_qtcb_bottom_port *data;
448 int ret;
449
450 adapter = (struct zfcp_adapter *)host->hostdata[0];
451 fc_stats = zfcp_init_fc_host_stats(adapter);
452 if (!fc_stats)
453 return NULL;
454
455 data = kzalloc(sizeof(*data), GFP_KERNEL);
456 if (!data)
457 return NULL;
458
459 ret = zfcp_fsf_exchange_port_data_sync(adapter->qdio, data);
460 if (ret) {
461 kfree(data);
462 return NULL;
463 }
464
465 if (adapter->stats_reset &&
466 ((jiffies/HZ - adapter->stats_reset) <
467 data->seconds_since_last_reset))
468 zfcp_adjust_fc_host_stats(fc_stats, data,
469 adapter->stats_reset_data);
470 else
471 zfcp_set_fc_host_stats(fc_stats, data);
472
473 kfree(data);
474 return fc_stats;
475}
476
477static void zfcp_reset_fc_host_stats(struct Scsi_Host *shost)
478{
479 struct zfcp_adapter *adapter;
480 struct fsf_qtcb_bottom_port *data;
481 int ret;
482
483 adapter = (struct zfcp_adapter *)shost->hostdata[0];
484 data = kzalloc(sizeof(*data), GFP_KERNEL);
485 if (!data)
486 return;
487
488 ret = zfcp_fsf_exchange_port_data_sync(adapter->qdio, data);
489 if (ret)
490 kfree(data);
491 else {
492 adapter->stats_reset = jiffies/HZ;
493 kfree(adapter->stats_reset_data);
494 adapter->stats_reset_data = data;
495
496 }
497}
498
499static void zfcp_get_host_port_state(struct Scsi_Host *shost)
500{
501 struct zfcp_adapter *adapter =
502 (struct zfcp_adapter *)shost->hostdata[0];
503 int status = atomic_read(&adapter->status);
504
505 if ((status & ZFCP_STATUS_COMMON_RUNNING) &&
506 !(status & ZFCP_STATUS_ADAPTER_LINK_UNPLUGGED))
507 fc_host_port_state(shost) = FC_PORTSTATE_ONLINE;
508 else if (status & ZFCP_STATUS_ADAPTER_LINK_UNPLUGGED)
509 fc_host_port_state(shost) = FC_PORTSTATE_LINKDOWN;
510 else if (status & ZFCP_STATUS_COMMON_ERP_FAILED)
511 fc_host_port_state(shost) = FC_PORTSTATE_ERROR;
512 else
513 fc_host_port_state(shost) = FC_PORTSTATE_UNKNOWN;
514}
515
516static void zfcp_set_rport_dev_loss_tmo(struct fc_rport *rport, u32 timeout)
517{
518 rport->dev_loss_tmo = timeout;
519}
520
521
522
523
524
525
526
527
528
529
530
531static void zfcp_scsi_terminate_rport_io(struct fc_rport *rport)
532{
533 struct zfcp_port *port;
534 struct Scsi_Host *shost = rport_to_shost(rport);
535 struct zfcp_adapter *adapter =
536 (struct zfcp_adapter *)shost->hostdata[0];
537
538 port = zfcp_get_port_by_wwpn(adapter, rport->port_name);
539
540 if (port) {
541 zfcp_erp_port_forced_reopen(port, 0, "sctrpi1");
542 put_device(&port->dev);
543 }
544}
545
546static void zfcp_scsi_rport_register(struct zfcp_port *port)
547{
548 struct fc_rport_identifiers ids;
549 struct fc_rport *rport;
550
551 if (port->rport)
552 return;
553
554 ids.node_name = port->wwnn;
555 ids.port_name = port->wwpn;
556 ids.port_id = port->d_id;
557 ids.roles = FC_RPORT_ROLE_FCP_TARGET;
558
559 rport = fc_remote_port_add(port->adapter->scsi_host, 0, &ids);
560 if (!rport) {
561 dev_err(&port->adapter->ccw_device->dev,
562 "Registering port 0x%016Lx failed\n",
563 (unsigned long long)port->wwpn);
564 return;
565 }
566
567 rport->maxframe_size = port->maxframe_size;
568 rport->supported_classes = port->supported_classes;
569 port->rport = rport;
570 port->starget_id = rport->scsi_target_id;
571
572 zfcp_unit_queue_scsi_scan(port);
573}
574
575static void zfcp_scsi_rport_block(struct zfcp_port *port)
576{
577 struct fc_rport *rport = port->rport;
578
579 if (rport) {
580 fc_remote_port_delete(rport);
581 port->rport = NULL;
582 }
583}
584
585void zfcp_scsi_schedule_rport_register(struct zfcp_port *port)
586{
587 get_device(&port->dev);
588 port->rport_task = RPORT_ADD;
589
590 if (!queue_work(port->adapter->work_queue, &port->rport_work))
591 put_device(&port->dev);
592}
593
594void zfcp_scsi_schedule_rport_block(struct zfcp_port *port)
595{
596 get_device(&port->dev);
597 port->rport_task = RPORT_DEL;
598
599 if (port->rport && queue_work(port->adapter->work_queue,
600 &port->rport_work))
601 return;
602
603 put_device(&port->dev);
604}
605
606void zfcp_scsi_schedule_rports_block(struct zfcp_adapter *adapter)
607{
608 unsigned long flags;
609 struct zfcp_port *port;
610
611 read_lock_irqsave(&adapter->port_list_lock, flags);
612 list_for_each_entry(port, &adapter->port_list, list)
613 zfcp_scsi_schedule_rport_block(port);
614 read_unlock_irqrestore(&adapter->port_list_lock, flags);
615}
616
617void zfcp_scsi_rport_work(struct work_struct *work)
618{
619 struct zfcp_port *port = container_of(work, struct zfcp_port,
620 rport_work);
621
622 while (port->rport_task) {
623 if (port->rport_task == RPORT_ADD) {
624 port->rport_task = RPORT_NONE;
625 zfcp_scsi_rport_register(port);
626 } else {
627 port->rport_task = RPORT_NONE;
628 zfcp_scsi_rport_block(port);
629 }
630 }
631
632 put_device(&port->dev);
633}
634
635
636
637
638
639void zfcp_scsi_set_prot(struct zfcp_adapter *adapter)
640{
641 unsigned int mask = 0;
642 unsigned int data_div;
643 struct Scsi_Host *shost = adapter->scsi_host;
644
645 data_div = atomic_read(&adapter->status) &
646 ZFCP_STATUS_ADAPTER_DATA_DIV_ENABLED;
647
648 if (enable_dif &&
649 adapter->adapter_features & FSF_FEATURE_DIF_PROT_TYPE1)
650 mask |= SHOST_DIF_TYPE1_PROTECTION;
651
652 if (enable_dif && data_div &&
653 adapter->adapter_features & FSF_FEATURE_DIX_PROT_TCPIP) {
654 mask |= SHOST_DIX_TYPE1_PROTECTION;
655 scsi_host_set_guard(shost, SHOST_DIX_GUARD_IP);
656 shost->sg_prot_tablesize = adapter->qdio->max_sbale_per_req / 2;
657 shost->sg_tablesize = adapter->qdio->max_sbale_per_req / 2;
658 shost->max_sectors = shost->sg_tablesize * 8;
659 }
660
661 scsi_host_set_prot(shost, mask);
662}
663
664
665
666
667
668
669
670
671
672void zfcp_scsi_dif_sense_error(struct scsi_cmnd *scmd, int ascq)
673{
674 scsi_build_sense_buffer(1, scmd->sense_buffer,
675 ILLEGAL_REQUEST, 0x10, ascq);
676 set_driver_byte(scmd, DRIVER_SENSE);
677 scmd->result |= SAM_STAT_CHECK_CONDITION;
678 set_host_byte(scmd, DID_SOFT_ERROR);
679}
680
681struct fc_function_template zfcp_transport_functions = {
682 .show_starget_port_id = 1,
683 .show_starget_port_name = 1,
684 .show_starget_node_name = 1,
685 .show_rport_supported_classes = 1,
686 .show_rport_maxframe_size = 1,
687 .show_rport_dev_loss_tmo = 1,
688 .show_host_node_name = 1,
689 .show_host_port_name = 1,
690 .show_host_permanent_port_name = 1,
691 .show_host_supported_classes = 1,
692 .show_host_supported_fc4s = 1,
693 .show_host_supported_speeds = 1,
694 .show_host_maxframe_size = 1,
695 .show_host_serial_number = 1,
696 .get_fc_host_stats = zfcp_get_fc_host_stats,
697 .reset_fc_host_stats = zfcp_reset_fc_host_stats,
698 .set_rport_dev_loss_tmo = zfcp_set_rport_dev_loss_tmo,
699 .get_host_port_state = zfcp_get_host_port_state,
700 .terminate_rport_io = zfcp_scsi_terminate_rport_io,
701 .show_host_port_state = 1,
702 .show_host_active_fc4s = 1,
703 .bsg_request = zfcp_fc_exec_bsg_job,
704 .bsg_timeout = zfcp_fc_timeout_bsg_job,
705
706
707 .show_host_port_type = 1,
708 .show_host_symbolic_name = 1,
709 .show_host_speed = 1,
710 .show_host_port_id = 1,
711 .dd_bsg_size = sizeof(struct zfcp_fsf_ct_els),
712};
713
