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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 <linux/utsname.h>
15#include <scsi/fc/fc_els.h>
16#include <scsi/libfc.h>
17#include "zfcp_ext.h"
18#include "zfcp_fc.h"
19
20struct kmem_cache *zfcp_fc_req_cache;
21
22static u32 zfcp_fc_rscn_range_mask[] = {
23 [ELS_ADDR_FMT_PORT] = 0xFFFFFF,
24 [ELS_ADDR_FMT_AREA] = 0xFFFF00,
25 [ELS_ADDR_FMT_DOM] = 0xFF0000,
26 [ELS_ADDR_FMT_FAB] = 0x000000,
27};
28
29static bool no_auto_port_rescan;
30module_param_named(no_auto_port_rescan, no_auto_port_rescan, bool, 0600);
31MODULE_PARM_DESC(no_auto_port_rescan,
32 "no automatic port_rescan (default off)");
33
34void zfcp_fc_conditional_port_scan(struct zfcp_adapter *adapter)
35{
36 if (no_auto_port_rescan)
37 return;
38
39 queue_work(adapter->work_queue, &adapter->scan_work);
40}
41
42void zfcp_fc_inverse_conditional_port_scan(struct zfcp_adapter *adapter)
43{
44 if (!no_auto_port_rescan)
45 return;
46
47 queue_work(adapter->work_queue, &adapter->scan_work);
48}
49
50
51
52
53
54void zfcp_fc_post_event(struct work_struct *work)
55{
56 struct zfcp_fc_event *event = NULL, *tmp = NULL;
57 LIST_HEAD(tmp_lh);
58 struct zfcp_fc_events *events = container_of(work,
59 struct zfcp_fc_events, work);
60 struct zfcp_adapter *adapter = container_of(events, struct zfcp_adapter,
61 events);
62
63 spin_lock_bh(&events->list_lock);
64 list_splice_init(&events->list, &tmp_lh);
65 spin_unlock_bh(&events->list_lock);
66
67 list_for_each_entry_safe(event, tmp, &tmp_lh, list) {
68 fc_host_post_event(adapter->scsi_host, fc_get_event_number(),
69 event->code, event->data);
70 list_del(&event->list);
71 kfree(event);
72 }
73
74}
75
76
77
78
79
80
81
82
83void zfcp_fc_enqueue_event(struct zfcp_adapter *adapter,
84 enum fc_host_event_code event_code, u32 event_data)
85{
86 struct zfcp_fc_event *event;
87
88 event = kmalloc(sizeof(struct zfcp_fc_event), GFP_ATOMIC);
89 if (!event)
90 return;
91
92 event->code = event_code;
93 event->data = event_data;
94
95 spin_lock(&adapter->events.list_lock);
96 list_add_tail(&event->list, &adapter->events.list);
97 spin_unlock(&adapter->events.list_lock);
98
99 queue_work(adapter->work_queue, &adapter->events.work);
100}
101
102static int zfcp_fc_wka_port_get(struct zfcp_fc_wka_port *wka_port)
103{
104 if (mutex_lock_interruptible(&wka_port->mutex))
105 return -ERESTARTSYS;
106
107 if (wka_port->status == ZFCP_FC_WKA_PORT_OFFLINE ||
108 wka_port->status == ZFCP_FC_WKA_PORT_CLOSING) {
109 wka_port->status = ZFCP_FC_WKA_PORT_OPENING;
110 if (zfcp_fsf_open_wka_port(wka_port))
111 wka_port->status = ZFCP_FC_WKA_PORT_OFFLINE;
112 }
113
114 mutex_unlock(&wka_port->mutex);
115
116 wait_event(wka_port->completion_wq,
117 wka_port->status == ZFCP_FC_WKA_PORT_ONLINE ||
118 wka_port->status == ZFCP_FC_WKA_PORT_OFFLINE);
119
120 if (wka_port->status == ZFCP_FC_WKA_PORT_ONLINE) {
121 atomic_inc(&wka_port->refcount);
122 return 0;
123 }
124 return -EIO;
125}
126
127static void zfcp_fc_wka_port_offline(struct work_struct *work)
128{
129 struct delayed_work *dw = to_delayed_work(work);
130 struct zfcp_fc_wka_port *wka_port =
131 container_of(dw, struct zfcp_fc_wka_port, work);
132
133 mutex_lock(&wka_port->mutex);
134 if ((atomic_read(&wka_port->refcount) != 0) ||
135 (wka_port->status != ZFCP_FC_WKA_PORT_ONLINE))
136 goto out;
137
138 wka_port->status = ZFCP_FC_WKA_PORT_CLOSING;
139 if (zfcp_fsf_close_wka_port(wka_port)) {
140 wka_port->status = ZFCP_FC_WKA_PORT_OFFLINE;
141 wake_up(&wka_port->completion_wq);
142 }
143out:
144 mutex_unlock(&wka_port->mutex);
145}
146
147static void zfcp_fc_wka_port_put(struct zfcp_fc_wka_port *wka_port)
148{
149 if (atomic_dec_return(&wka_port->refcount) != 0)
150 return;
151
152 schedule_delayed_work(&wka_port->work, HZ / 100);
153}
154
155static void zfcp_fc_wka_port_init(struct zfcp_fc_wka_port *wka_port, u32 d_id,
156 struct zfcp_adapter *adapter)
157{
158 init_waitqueue_head(&wka_port->completion_wq);
159
160 wka_port->adapter = adapter;
161 wka_port->d_id = d_id;
162
163 wka_port->status = ZFCP_FC_WKA_PORT_OFFLINE;
164 atomic_set(&wka_port->refcount, 0);
165 mutex_init(&wka_port->mutex);
166 INIT_DELAYED_WORK(&wka_port->work, zfcp_fc_wka_port_offline);
167}
168
169static void zfcp_fc_wka_port_force_offline(struct zfcp_fc_wka_port *wka)
170{
171 cancel_delayed_work_sync(&wka->work);
172 mutex_lock(&wka->mutex);
173 wka->status = ZFCP_FC_WKA_PORT_OFFLINE;
174 mutex_unlock(&wka->mutex);
175}
176
177void zfcp_fc_wka_ports_force_offline(struct zfcp_fc_wka_ports *gs)
178{
179 if (!gs)
180 return;
181 zfcp_fc_wka_port_force_offline(&gs->ms);
182 zfcp_fc_wka_port_force_offline(&gs->ts);
183 zfcp_fc_wka_port_force_offline(&gs->ds);
184 zfcp_fc_wka_port_force_offline(&gs->as);
185}
186
187static void _zfcp_fc_incoming_rscn(struct zfcp_fsf_req *fsf_req, u32 range,
188 struct fc_els_rscn_page *page)
189{
190 unsigned long flags;
191 struct zfcp_adapter *adapter = fsf_req->adapter;
192 struct zfcp_port *port;
193
194 read_lock_irqsave(&adapter->port_list_lock, flags);
195 list_for_each_entry(port, &adapter->port_list, list) {
196 if ((port->d_id & range) == (ntoh24(page->rscn_fid) & range))
197 zfcp_fc_test_link(port);
198 if (!port->d_id)
199 zfcp_erp_port_reopen(port,
200 ZFCP_STATUS_COMMON_ERP_FAILED,
201 "fcrscn1");
202 }
203 read_unlock_irqrestore(&adapter->port_list_lock, flags);
204}
205
206static void zfcp_fc_incoming_rscn(struct zfcp_fsf_req *fsf_req)
207{
208 struct fsf_status_read_buffer *status_buffer = (void *)fsf_req->data;
209 struct fc_els_rscn *head;
210 struct fc_els_rscn_page *page;
211 u16 i;
212 u16 no_entries;
213 unsigned int afmt;
214
215 head = (struct fc_els_rscn *) status_buffer->payload.data;
216 page = (struct fc_els_rscn_page *) head;
217
218
219 no_entries = head->rscn_plen / sizeof(struct fc_els_rscn_page);
220
221 for (i = 1; i < no_entries; i++) {
222
223 page++;
224 afmt = page->rscn_page_flags & ELS_RSCN_ADDR_FMT_MASK;
225 _zfcp_fc_incoming_rscn(fsf_req, zfcp_fc_rscn_range_mask[afmt],
226 page);
227 zfcp_fc_enqueue_event(fsf_req->adapter, FCH_EVT_RSCN,
228 *(u32 *)page);
229 }
230 zfcp_fc_conditional_port_scan(fsf_req->adapter);
231}
232
233static void zfcp_fc_incoming_wwpn(struct zfcp_fsf_req *req, u64 wwpn)
234{
235 unsigned long flags;
236 struct zfcp_adapter *adapter = req->adapter;
237 struct zfcp_port *port;
238
239 read_lock_irqsave(&adapter->port_list_lock, flags);
240 list_for_each_entry(port, &adapter->port_list, list)
241 if (port->wwpn == wwpn) {
242 zfcp_erp_port_forced_reopen(port, 0, "fciwwp1");
243 break;
244 }
245 read_unlock_irqrestore(&adapter->port_list_lock, flags);
246}
247
248static void zfcp_fc_incoming_plogi(struct zfcp_fsf_req *req)
249{
250 struct fsf_status_read_buffer *status_buffer;
251 struct fc_els_flogi *plogi;
252
253 status_buffer = (struct fsf_status_read_buffer *) req->data;
254 plogi = (struct fc_els_flogi *) status_buffer->payload.data;
255 zfcp_fc_incoming_wwpn(req, plogi->fl_wwpn);
256}
257
258static void zfcp_fc_incoming_logo(struct zfcp_fsf_req *req)
259{
260 struct fsf_status_read_buffer *status_buffer =
261 (struct fsf_status_read_buffer *)req->data;
262 struct fc_els_logo *logo =
263 (struct fc_els_logo *) status_buffer->payload.data;
264
265 zfcp_fc_incoming_wwpn(req, logo->fl_n_port_wwn);
266}
267
268
269
270
271
272void zfcp_fc_incoming_els(struct zfcp_fsf_req *fsf_req)
273{
274 struct fsf_status_read_buffer *status_buffer =
275 (struct fsf_status_read_buffer *) fsf_req->data;
276 unsigned int els_type = status_buffer->payload.data[0];
277
278 zfcp_dbf_san_in_els("fciels1", fsf_req);
279 if (els_type == ELS_PLOGI)
280 zfcp_fc_incoming_plogi(fsf_req);
281 else if (els_type == ELS_LOGO)
282 zfcp_fc_incoming_logo(fsf_req);
283 else if (els_type == ELS_RSCN)
284 zfcp_fc_incoming_rscn(fsf_req);
285}
286
287static void zfcp_fc_ns_gid_pn_eval(struct zfcp_fc_req *fc_req)
288{
289 struct zfcp_fsf_ct_els *ct_els = &fc_req->ct_els;
290 struct zfcp_fc_gid_pn_rsp *gid_pn_rsp = &fc_req->u.gid_pn.rsp;
291
292 if (ct_els->status)
293 return;
294 if (gid_pn_rsp->ct_hdr.ct_cmd != FC_FS_ACC)
295 return;
296
297
298 ct_els->port->d_id = ntoh24(gid_pn_rsp->gid_pn.fp_fid);
299}
300
301static void zfcp_fc_complete(void *data)
302{
303 complete(data);
304}
305
306static void zfcp_fc_ct_ns_init(struct fc_ct_hdr *ct_hdr, u16 cmd, u16 mr_size)
307{
308 ct_hdr->ct_rev = FC_CT_REV;
309 ct_hdr->ct_fs_type = FC_FST_DIR;
310 ct_hdr->ct_fs_subtype = FC_NS_SUBTYPE;
311 ct_hdr->ct_cmd = cmd;
312 ct_hdr->ct_mr_size = mr_size / 4;
313}
314
315static int zfcp_fc_ns_gid_pn_request(struct zfcp_port *port,
316 struct zfcp_fc_req *fc_req)
317{
318 struct zfcp_adapter *adapter = port->adapter;
319 DECLARE_COMPLETION_ONSTACK(completion);
320 struct zfcp_fc_gid_pn_req *gid_pn_req = &fc_req->u.gid_pn.req;
321 struct zfcp_fc_gid_pn_rsp *gid_pn_rsp = &fc_req->u.gid_pn.rsp;
322 int ret;
323
324
325 fc_req->ct_els.port = port;
326 fc_req->ct_els.handler = zfcp_fc_complete;
327 fc_req->ct_els.handler_data = &completion;
328 fc_req->ct_els.req = &fc_req->sg_req;
329 fc_req->ct_els.resp = &fc_req->sg_rsp;
330 sg_init_one(&fc_req->sg_req, gid_pn_req, sizeof(*gid_pn_req));
331 sg_init_one(&fc_req->sg_rsp, gid_pn_rsp, sizeof(*gid_pn_rsp));
332
333 zfcp_fc_ct_ns_init(&gid_pn_req->ct_hdr,
334 FC_NS_GID_PN, ZFCP_FC_CT_SIZE_PAGE);
335 gid_pn_req->gid_pn.fn_wwpn = port->wwpn;
336
337 ret = zfcp_fsf_send_ct(&adapter->gs->ds, &fc_req->ct_els,
338 adapter->pool.gid_pn_req,
339 ZFCP_FC_CTELS_TMO);
340 if (!ret) {
341 wait_for_completion(&completion);
342 zfcp_fc_ns_gid_pn_eval(fc_req);
343 }
344 return ret;
345}
346
347
348
349
350
351
352static int zfcp_fc_ns_gid_pn(struct zfcp_port *port)
353{
354 int ret;
355 struct zfcp_fc_req *fc_req;
356 struct zfcp_adapter *adapter = port->adapter;
357
358 fc_req = mempool_alloc(adapter->pool.gid_pn, GFP_ATOMIC);
359 if (!fc_req)
360 return -ENOMEM;
361
362 memset(fc_req, 0, sizeof(*fc_req));
363
364 ret = zfcp_fc_wka_port_get(&adapter->gs->ds);
365 if (ret)
366 goto out;
367
368 ret = zfcp_fc_ns_gid_pn_request(port, fc_req);
369
370 zfcp_fc_wka_port_put(&adapter->gs->ds);
371out:
372 mempool_free(fc_req, adapter->pool.gid_pn);
373 return ret;
374}
375
376void zfcp_fc_port_did_lookup(struct work_struct *work)
377{
378 int ret;
379 struct zfcp_port *port = container_of(work, struct zfcp_port,
380 gid_pn_work);
381
382 ret = zfcp_fc_ns_gid_pn(port);
383 if (ret) {
384
385 zfcp_erp_adapter_reopen(port->adapter, 0, "fcgpn_1");
386 goto out;
387 }
388
389 if (!port->d_id) {
390 zfcp_erp_set_port_status(port, ZFCP_STATUS_COMMON_ERP_FAILED);
391 goto out;
392 }
393
394 zfcp_erp_port_reopen(port, 0, "fcgpn_3");
395out:
396 put_device(&port->dev);
397}
398
399
400
401
402
403void zfcp_fc_trigger_did_lookup(struct zfcp_port *port)
404{
405 get_device(&port->dev);
406 if (!queue_work(port->adapter->work_queue, &port->gid_pn_work))
407 put_device(&port->dev);
408}
409
410
411
412
413
414
415
416
417void zfcp_fc_plogi_evaluate(struct zfcp_port *port, struct fc_els_flogi *plogi)
418{
419 if (plogi->fl_wwpn != port->wwpn) {
420 port->d_id = 0;
421 dev_warn(&port->adapter->ccw_device->dev,
422 "A port opened with WWPN 0x%016Lx returned data that "
423 "identifies it as WWPN 0x%016Lx\n",
424 (unsigned long long) port->wwpn,
425 (unsigned long long) plogi->fl_wwpn);
426 return;
427 }
428
429 port->wwnn = plogi->fl_wwnn;
430 port->maxframe_size = plogi->fl_csp.sp_bb_data;
431
432 if (plogi->fl_cssp[0].cp_class & FC_CPC_VALID)
433 port->supported_classes |= FC_COS_CLASS1;
434 if (plogi->fl_cssp[1].cp_class & FC_CPC_VALID)
435 port->supported_classes |= FC_COS_CLASS2;
436 if (plogi->fl_cssp[2].cp_class & FC_CPC_VALID)
437 port->supported_classes |= FC_COS_CLASS3;
438 if (plogi->fl_cssp[3].cp_class & FC_CPC_VALID)
439 port->supported_classes |= FC_COS_CLASS4;
440}
441
442static void zfcp_fc_adisc_handler(void *data)
443{
444 struct zfcp_fc_req *fc_req = data;
445 struct zfcp_port *port = fc_req->ct_els.port;
446 struct fc_els_adisc *adisc_resp = &fc_req->u.adisc.rsp;
447
448 if (fc_req->ct_els.status) {
449
450 zfcp_erp_port_forced_reopen(port, ZFCP_STATUS_COMMON_ERP_FAILED,
451 "fcadh_1");
452 goto out;
453 }
454
455 if (!port->wwnn)
456 port->wwnn = adisc_resp->adisc_wwnn;
457
458 if ((port->wwpn != adisc_resp->adisc_wwpn) ||
459 !(atomic_read(&port->status) & ZFCP_STATUS_COMMON_OPEN)) {
460 zfcp_erp_port_reopen(port, ZFCP_STATUS_COMMON_ERP_FAILED,
461 "fcadh_2");
462 goto out;
463 }
464
465
466 zfcp_scsi_schedule_rport_register(port);
467 out:
468 atomic_clear_mask(ZFCP_STATUS_PORT_LINK_TEST, &port->status);
469 put_device(&port->dev);
470 kmem_cache_free(zfcp_fc_req_cache, fc_req);
471}
472
473static int zfcp_fc_adisc(struct zfcp_port *port)
474{
475 struct zfcp_fc_req *fc_req;
476 struct zfcp_adapter *adapter = port->adapter;
477 struct Scsi_Host *shost = adapter->scsi_host;
478 int ret;
479
480 fc_req = kmem_cache_zalloc(zfcp_fc_req_cache, GFP_ATOMIC);
481 if (!fc_req)
482 return -ENOMEM;
483
484 fc_req->ct_els.port = port;
485 fc_req->ct_els.req = &fc_req->sg_req;
486 fc_req->ct_els.resp = &fc_req->sg_rsp;
487 sg_init_one(&fc_req->sg_req, &fc_req->u.adisc.req,
488 sizeof(struct fc_els_adisc));
489 sg_init_one(&fc_req->sg_rsp, &fc_req->u.adisc.rsp,
490 sizeof(struct fc_els_adisc));
491
492 fc_req->ct_els.handler = zfcp_fc_adisc_handler;
493 fc_req->ct_els.handler_data = fc_req;
494
495
496
497 fc_req->u.adisc.req.adisc_wwpn = fc_host_port_name(shost);
498 fc_req->u.adisc.req.adisc_wwnn = fc_host_node_name(shost);
499 fc_req->u.adisc.req.adisc_cmd = ELS_ADISC;
500 hton24(fc_req->u.adisc.req.adisc_port_id, fc_host_port_id(shost));
501
502 ret = zfcp_fsf_send_els(adapter, port->d_id, &fc_req->ct_els,
503 ZFCP_FC_CTELS_TMO);
504 if (ret)
505 kmem_cache_free(zfcp_fc_req_cache, fc_req);
506
507 return ret;
508}
509
510void zfcp_fc_link_test_work(struct work_struct *work)
511{
512 struct zfcp_port *port =
513 container_of(work, struct zfcp_port, test_link_work);
514 int retval;
515
516 get_device(&port->dev);
517 port->rport_task = RPORT_DEL;
518 zfcp_scsi_rport_work(&port->rport_work);
519
520
521 if (atomic_read(&port->status) & ZFCP_STATUS_PORT_LINK_TEST)
522 goto out;
523
524 atomic_set_mask(ZFCP_STATUS_PORT_LINK_TEST, &port->status);
525
526 retval = zfcp_fc_adisc(port);
527 if (retval == 0)
528 return;
529
530
531 atomic_clear_mask(ZFCP_STATUS_PORT_LINK_TEST, &port->status);
532 zfcp_erp_port_forced_reopen(port, 0, "fcltwk1");
533
534out:
535 put_device(&port->dev);
536}
537
538
539
540
541
542
543
544
545
546void zfcp_fc_test_link(struct zfcp_port *port)
547{
548 get_device(&port->dev);
549 if (!queue_work(port->adapter->work_queue, &port->test_link_work))
550 put_device(&port->dev);
551}
552
553static struct zfcp_fc_req *zfcp_alloc_sg_env(int buf_num)
554{
555 struct zfcp_fc_req *fc_req;
556
557 fc_req = kmem_cache_zalloc(zfcp_fc_req_cache, GFP_KERNEL);
558 if (!fc_req)
559 return NULL;
560
561 if (zfcp_sg_setup_table(&fc_req->sg_rsp, buf_num)) {
562 kmem_cache_free(zfcp_fc_req_cache, fc_req);
563 return NULL;
564 }
565
566 sg_init_one(&fc_req->sg_req, &fc_req->u.gpn_ft.req,
567 sizeof(struct zfcp_fc_gpn_ft_req));
568
569 return fc_req;
570}
571
572static int zfcp_fc_send_gpn_ft(struct zfcp_fc_req *fc_req,
573 struct zfcp_adapter *adapter, int max_bytes)
574{
575 struct zfcp_fsf_ct_els *ct_els = &fc_req->ct_els;
576 struct zfcp_fc_gpn_ft_req *req = &fc_req->u.gpn_ft.req;
577 DECLARE_COMPLETION_ONSTACK(completion);
578 int ret;
579
580 zfcp_fc_ct_ns_init(&req->ct_hdr, FC_NS_GPN_FT, max_bytes);
581 req->gpn_ft.fn_fc4_type = FC_TYPE_FCP;
582
583 ct_els->handler = zfcp_fc_complete;
584 ct_els->handler_data = &completion;
585 ct_els->req = &fc_req->sg_req;
586 ct_els->resp = &fc_req->sg_rsp;
587
588 ret = zfcp_fsf_send_ct(&adapter->gs->ds, ct_els, NULL,
589 ZFCP_FC_CTELS_TMO);
590 if (!ret)
591 wait_for_completion(&completion);
592 return ret;
593}
594
595static void zfcp_fc_validate_port(struct zfcp_port *port, struct list_head *lh)
596{
597 if (!(atomic_read(&port->status) & ZFCP_STATUS_COMMON_NOESC))
598 return;
599
600 atomic_clear_mask(ZFCP_STATUS_COMMON_NOESC, &port->status);
601
602 if ((port->supported_classes != 0) ||
603 !list_empty(&port->unit_list))
604 return;
605
606 list_move_tail(&port->list, lh);
607}
608
609static int zfcp_fc_eval_gpn_ft(struct zfcp_fc_req *fc_req,
610 struct zfcp_adapter *adapter, int max_entries)
611{
612 struct zfcp_fsf_ct_els *ct_els = &fc_req->ct_els;
613 struct scatterlist *sg = &fc_req->sg_rsp;
614 struct fc_ct_hdr *hdr = sg_virt(sg);
615 struct fc_gpn_ft_resp *acc = sg_virt(sg);
616 struct zfcp_port *port, *tmp;
617 unsigned long flags;
618 LIST_HEAD(remove_lh);
619 u32 d_id;
620 int ret = 0, x, last = 0;
621
622 if (ct_els->status)
623 return -EIO;
624
625 if (hdr->ct_cmd != FC_FS_ACC) {
626 if (hdr->ct_reason == FC_BA_RJT_UNABLE)
627 return -EAGAIN;
628 return -EIO;
629 }
630
631 if (hdr->ct_mr_size) {
632 dev_warn(&adapter->ccw_device->dev,
633 "The name server reported %d words residual data\n",
634 hdr->ct_mr_size);
635 return -E2BIG;
636 }
637
638
639 for (x = 1; x < max_entries && !last; x++) {
640 if (x % (ZFCP_FC_GPN_FT_ENT_PAGE + 1))
641 acc++;
642 else
643 acc = sg_virt(++sg);
644
645 last = acc->fp_flags & FC_NS_FID_LAST;
646 d_id = ntoh24(acc->fp_fid);
647
648
649 if (d_id >= FC_FID_WELL_KNOWN_BASE)
650 continue;
651
652 if (acc->fp_wwpn == fc_host_port_name(adapter->scsi_host))
653 continue;
654
655 port = zfcp_port_enqueue(adapter, acc->fp_wwpn,
656 ZFCP_STATUS_COMMON_NOESC, d_id);
657 if (!IS_ERR(port))
658 zfcp_erp_port_reopen(port, 0, "fcegpf1");
659 else if (PTR_ERR(port) != -EEXIST)
660 ret = PTR_ERR(port);
661 }
662
663 zfcp_erp_wait(adapter);
664 write_lock_irqsave(&adapter->port_list_lock, flags);
665 list_for_each_entry_safe(port, tmp, &adapter->port_list, list)
666 zfcp_fc_validate_port(port, &remove_lh);
667 write_unlock_irqrestore(&adapter->port_list_lock, flags);
668
669 list_for_each_entry_safe(port, tmp, &remove_lh, list) {
670 zfcp_erp_port_shutdown(port, 0, "fcegpf2");
671 device_unregister(&port->dev);
672 }
673
674 return ret;
675}
676
677
678
679
680
681void zfcp_fc_scan_ports(struct work_struct *work)
682{
683 struct zfcp_adapter *adapter = container_of(work, struct zfcp_adapter,
684 scan_work);
685 int ret, i;
686 struct zfcp_fc_req *fc_req;
687 int chain, max_entries, buf_num, max_bytes;
688
689 chain = adapter->adapter_features & FSF_FEATURE_ELS_CT_CHAINED_SBALS;
690 buf_num = chain ? ZFCP_FC_GPN_FT_NUM_BUFS : 1;
691 max_entries = chain ? ZFCP_FC_GPN_FT_MAX_ENT : ZFCP_FC_GPN_FT_ENT_PAGE;
692 max_bytes = chain ? ZFCP_FC_GPN_FT_MAX_SIZE : ZFCP_FC_CT_SIZE_PAGE;
693
694 if (fc_host_port_type(adapter->scsi_host) != FC_PORTTYPE_NPORT &&
695 fc_host_port_type(adapter->scsi_host) != FC_PORTTYPE_NPIV)
696 return;
697
698 if (zfcp_fc_wka_port_get(&adapter->gs->ds))
699 return;
700
701 fc_req = zfcp_alloc_sg_env(buf_num);
702 if (!fc_req)
703 goto out;
704
705 for (i = 0; i < 3; i++) {
706 ret = zfcp_fc_send_gpn_ft(fc_req, adapter, max_bytes);
707 if (!ret) {
708 ret = zfcp_fc_eval_gpn_ft(fc_req, adapter, max_entries);
709 if (ret == -EAGAIN)
710 ssleep(1);
711 else
712 break;
713 }
714 }
715 zfcp_sg_free_table(&fc_req->sg_rsp, buf_num);
716 kmem_cache_free(zfcp_fc_req_cache, fc_req);
717out:
718 zfcp_fc_wka_port_put(&adapter->gs->ds);
719}
720
721static int zfcp_fc_gspn(struct zfcp_adapter *adapter,
722 struct zfcp_fc_req *fc_req)
723{
724 DECLARE_COMPLETION_ONSTACK(completion);
725 char devno[] = "DEVNO:";
726 struct zfcp_fsf_ct_els *ct_els = &fc_req->ct_els;
727 struct zfcp_fc_gspn_req *gspn_req = &fc_req->u.gspn.req;
728 struct zfcp_fc_gspn_rsp *gspn_rsp = &fc_req->u.gspn.rsp;
729 int ret;
730
731 zfcp_fc_ct_ns_init(&gspn_req->ct_hdr, FC_NS_GSPN_ID,
732 FC_SYMBOLIC_NAME_SIZE);
733 hton24(gspn_req->gspn.fp_fid, fc_host_port_id(adapter->scsi_host));
734
735 sg_init_one(&fc_req->sg_req, gspn_req, sizeof(*gspn_req));
736 sg_init_one(&fc_req->sg_rsp, gspn_rsp, sizeof(*gspn_rsp));
737
738 ct_els->handler = zfcp_fc_complete;
739 ct_els->handler_data = &completion;
740 ct_els->req = &fc_req->sg_req;
741 ct_els->resp = &fc_req->sg_rsp;
742
743 ret = zfcp_fsf_send_ct(&adapter->gs->ds, ct_els, NULL,
744 ZFCP_FC_CTELS_TMO);
745 if (ret)
746 return ret;
747
748 wait_for_completion(&completion);
749 if (ct_els->status)
750 return ct_els->status;
751
752 if (fc_host_port_type(adapter->scsi_host) == FC_PORTTYPE_NPIV &&
753 !(strstr(gspn_rsp->gspn.fp_name, devno)))
754 snprintf(fc_host_symbolic_name(adapter->scsi_host),
755 FC_SYMBOLIC_NAME_SIZE, "%s%s %s NAME: %s",
756 gspn_rsp->gspn.fp_name, devno,
757 dev_name(&adapter->ccw_device->dev),
758 init_utsname()->nodename);
759 else
760 strlcpy(fc_host_symbolic_name(adapter->scsi_host),
761 gspn_rsp->gspn.fp_name, FC_SYMBOLIC_NAME_SIZE);
762
763 return 0;
764}
765
766static void zfcp_fc_rspn(struct zfcp_adapter *adapter,
767 struct zfcp_fc_req *fc_req)
768{
769 DECLARE_COMPLETION_ONSTACK(completion);
770 struct Scsi_Host *shost = adapter->scsi_host;
771 struct zfcp_fsf_ct_els *ct_els = &fc_req->ct_els;
772 struct zfcp_fc_rspn_req *rspn_req = &fc_req->u.rspn.req;
773 struct fc_ct_hdr *rspn_rsp = &fc_req->u.rspn.rsp;
774 int ret, len;
775
776 zfcp_fc_ct_ns_init(&rspn_req->ct_hdr, FC_NS_RSPN_ID,
777 FC_SYMBOLIC_NAME_SIZE);
778 hton24(rspn_req->rspn.fr_fid.fp_fid, fc_host_port_id(shost));
779 len = strlcpy(rspn_req->rspn.fr_name, fc_host_symbolic_name(shost),
780 FC_SYMBOLIC_NAME_SIZE);
781 rspn_req->rspn.fr_name_len = len;
782
783 sg_init_one(&fc_req->sg_req, rspn_req, sizeof(*rspn_req));
784 sg_init_one(&fc_req->sg_rsp, rspn_rsp, sizeof(*rspn_rsp));
785
786 ct_els->handler = zfcp_fc_complete;
787 ct_els->handler_data = &completion;
788 ct_els->req = &fc_req->sg_req;
789 ct_els->resp = &fc_req->sg_rsp;
790
791 ret = zfcp_fsf_send_ct(&adapter->gs->ds, ct_els, NULL,
792 ZFCP_FC_CTELS_TMO);
793 if (!ret)
794 wait_for_completion(&completion);
795}
796
797
798
799
800
801
802
803
804
805
806
807
808void zfcp_fc_sym_name_update(struct work_struct *work)
809{
810 struct zfcp_adapter *adapter = container_of(work, struct zfcp_adapter,
811 ns_up_work);
812 int ret;
813 struct zfcp_fc_req *fc_req;
814
815 if (fc_host_port_type(adapter->scsi_host) != FC_PORTTYPE_NPORT &&
816 fc_host_port_type(adapter->scsi_host) != FC_PORTTYPE_NPIV)
817 return;
818
819 fc_req = kmem_cache_zalloc(zfcp_fc_req_cache, GFP_KERNEL);
820 if (!fc_req)
821 return;
822
823 ret = zfcp_fc_wka_port_get(&adapter->gs->ds);
824 if (ret)
825 goto out_free;
826
827 ret = zfcp_fc_gspn(adapter, fc_req);
828 if (ret || fc_host_port_type(adapter->scsi_host) != FC_PORTTYPE_NPIV)
829 goto out_ds_put;
830
831 memset(fc_req, 0, sizeof(*fc_req));
832 zfcp_fc_rspn(adapter, fc_req);
833
834out_ds_put:
835 zfcp_fc_wka_port_put(&adapter->gs->ds);
836out_free:
837 kmem_cache_free(zfcp_fc_req_cache, fc_req);
838}
839
840static void zfcp_fc_ct_els_job_handler(void *data)
841{
842 struct fc_bsg_job *job = data;
843 struct zfcp_fsf_ct_els *zfcp_ct_els = job->dd_data;
844 struct fc_bsg_reply *jr = job->reply;
845
846 jr->reply_payload_rcv_len = job->reply_payload.payload_len;
847 jr->reply_data.ctels_reply.status = FC_CTELS_STATUS_OK;
848 jr->result = zfcp_ct_els->status ? -EIO : 0;
849 job->job_done(job);
850}
851
852static struct zfcp_fc_wka_port *zfcp_fc_job_wka_port(struct fc_bsg_job *job)
853{
854 u32 preamble_word1;
855 u8 gs_type;
856 struct zfcp_adapter *adapter;
857
858 preamble_word1 = job->request->rqst_data.r_ct.preamble_word1;
859 gs_type = (preamble_word1 & 0xff000000) >> 24;
860
861 adapter = (struct zfcp_adapter *) job->shost->hostdata[0];
862
863 switch (gs_type) {
864 case FC_FST_ALIAS:
865 return &adapter->gs->as;
866 case FC_FST_MGMT:
867 return &adapter->gs->ms;
868 case FC_FST_TIME:
869 return &adapter->gs->ts;
870 break;
871 case FC_FST_DIR:
872 return &adapter->gs->ds;
873 break;
874 default:
875 return NULL;
876 }
877}
878
879static void zfcp_fc_ct_job_handler(void *data)
880{
881 struct fc_bsg_job *job = data;
882 struct zfcp_fc_wka_port *wka_port;
883
884 wka_port = zfcp_fc_job_wka_port(job);
885 zfcp_fc_wka_port_put(wka_port);
886
887 zfcp_fc_ct_els_job_handler(data);
888}
889
890static int zfcp_fc_exec_els_job(struct fc_bsg_job *job,
891 struct zfcp_adapter *adapter)
892{
893 struct zfcp_fsf_ct_els *els = job->dd_data;
894 struct fc_rport *rport = job->rport;
895 struct zfcp_port *port;
896 u32 d_id;
897
898 if (rport) {
899 port = zfcp_get_port_by_wwpn(adapter, rport->port_name);
900 if (!port)
901 return -EINVAL;
902
903 d_id = port->d_id;
904 put_device(&port->dev);
905 } else
906 d_id = ntoh24(job->request->rqst_data.h_els.port_id);
907
908 els->handler = zfcp_fc_ct_els_job_handler;
909 return zfcp_fsf_send_els(adapter, d_id, els, job->req->timeout / HZ);
910}
911
912static int zfcp_fc_exec_ct_job(struct fc_bsg_job *job,
913 struct zfcp_adapter *adapter)
914{
915 int ret;
916 struct zfcp_fsf_ct_els *ct = job->dd_data;
917 struct zfcp_fc_wka_port *wka_port;
918
919 wka_port = zfcp_fc_job_wka_port(job);
920 if (!wka_port)
921 return -EINVAL;
922
923 ret = zfcp_fc_wka_port_get(wka_port);
924 if (ret)
925 return ret;
926
927 ct->handler = zfcp_fc_ct_job_handler;
928 ret = zfcp_fsf_send_ct(wka_port, ct, NULL, job->req->timeout / HZ);
929 if (ret)
930 zfcp_fc_wka_port_put(wka_port);
931
932 return ret;
933}
934
935int zfcp_fc_exec_bsg_job(struct fc_bsg_job *job)
936{
937 struct Scsi_Host *shost;
938 struct zfcp_adapter *adapter;
939 struct zfcp_fsf_ct_els *ct_els = job->dd_data;
940
941 shost = job->rport ? rport_to_shost(job->rport) : job->shost;
942 adapter = (struct zfcp_adapter *)shost->hostdata[0];
943
944 if (!(atomic_read(&adapter->status) & ZFCP_STATUS_COMMON_OPEN))
945 return -EINVAL;
946
947 ct_els->req = job->request_payload.sg_list;
948 ct_els->resp = job->reply_payload.sg_list;
949 ct_els->handler_data = job;
950
951 switch (job->request->msgcode) {
952 case FC_BSG_RPT_ELS:
953 case FC_BSG_HST_ELS_NOLOGIN:
954 return zfcp_fc_exec_els_job(job, adapter);
955 case FC_BSG_RPT_CT:
956 case FC_BSG_HST_CT:
957 return zfcp_fc_exec_ct_job(job, adapter);
958 default:
959 return -EINVAL;
960 }
961}
962
963int zfcp_fc_timeout_bsg_job(struct fc_bsg_job *job)
964{
965
966 return -EAGAIN;
967}
968
969int zfcp_fc_gs_setup(struct zfcp_adapter *adapter)
970{
971 struct zfcp_fc_wka_ports *wka_ports;
972
973 wka_ports = kzalloc(sizeof(struct zfcp_fc_wka_ports), GFP_KERNEL);
974 if (!wka_ports)
975 return -ENOMEM;
976
977 adapter->gs = wka_ports;
978 zfcp_fc_wka_port_init(&wka_ports->ms, FC_FID_MGMT_SERV, adapter);
979 zfcp_fc_wka_port_init(&wka_ports->ts, FC_FID_TIME_SERV, adapter);
980 zfcp_fc_wka_port_init(&wka_ports->ds, FC_FID_DIR_SERV, adapter);
981 zfcp_fc_wka_port_init(&wka_ports->as, FC_FID_ALIASES, adapter);
982
983 return 0;
984}
985
986void zfcp_fc_gs_destroy(struct zfcp_adapter *adapter)
987{
988 kfree(adapter->gs);
989 adapter->gs = NULL;
990}
991
992