4 * Fibre Channel related functions for the zfcp device driver.
6 * Copyright IBM Corporation 2008, 2009
9 #define KMSG_COMPONENT "zfcp"
10 #define pr_fmt(fmt) KMSG_COMPONENT ": " fmt
14 enum rscn_address_format {
15 RSCN_PORT_ADDRESS = 0x0,
16 RSCN_AREA_ADDRESS = 0x1,
17 RSCN_DOMAIN_ADDRESS = 0x2,
18 RSCN_FABRIC_ADDRESS = 0x3,
21 static u32 rscn_range_mask[] = {
22 [RSCN_PORT_ADDRESS] = 0xFFFFFF,
23 [RSCN_AREA_ADDRESS] = 0xFFFF00,
24 [RSCN_DOMAIN_ADDRESS] = 0xFF0000,
25 [RSCN_FABRIC_ADDRESS] = 0x000000,
28 struct gpn_ft_resp_acc {
33 } __attribute__ ((packed));
35 #define ZFCP_CT_SIZE_ONE_PAGE (PAGE_SIZE - sizeof(struct ct_hdr))
36 #define ZFCP_GPN_FT_ENTRIES (ZFCP_CT_SIZE_ONE_PAGE \
37 / sizeof(struct gpn_ft_resp_acc))
38 #define ZFCP_GPN_FT_BUFFERS 4
39 #define ZFCP_GPN_FT_MAX_SIZE (ZFCP_GPN_FT_BUFFERS * PAGE_SIZE \
40 - sizeof(struct ct_hdr))
41 #define ZFCP_GPN_FT_MAX_ENTRIES ZFCP_GPN_FT_BUFFERS * (ZFCP_GPN_FT_ENTRIES + 1)
43 struct ct_iu_gpn_ft_resp {
45 struct gpn_ft_resp_acc accept[ZFCP_GPN_FT_ENTRIES];
46 } __attribute__ ((packed));
49 struct zfcp_send_ct ct;
50 struct scatterlist sg_req;
51 struct scatterlist sg_resp[ZFCP_GPN_FT_BUFFERS];
54 struct zfcp_fc_ns_handler_data {
55 struct completion done;
56 void (*handler)(unsigned long);
57 unsigned long handler_data;
60 static int zfcp_fc_wka_port_get(struct zfcp_wka_port *wka_port)
62 if (mutex_lock_interruptible(&wka_port->mutex))
65 if (wka_port->status == ZFCP_WKA_PORT_OFFLINE ||
66 wka_port->status == ZFCP_WKA_PORT_CLOSING) {
67 wka_port->status = ZFCP_WKA_PORT_OPENING;
68 if (zfcp_fsf_open_wka_port(wka_port))
69 wka_port->status = ZFCP_WKA_PORT_OFFLINE;
72 mutex_unlock(&wka_port->mutex);
74 wait_event(wka_port->completion_wq,
75 wka_port->status == ZFCP_WKA_PORT_ONLINE ||
76 wka_port->status == ZFCP_WKA_PORT_OFFLINE);
78 if (wka_port->status == ZFCP_WKA_PORT_ONLINE) {
79 atomic_inc(&wka_port->refcount);
85 static void zfcp_fc_wka_port_offline(struct work_struct *work)
87 struct delayed_work *dw = to_delayed_work(work);
88 struct zfcp_wka_port *wka_port =
89 container_of(dw, struct zfcp_wka_port, work);
91 mutex_lock(&wka_port->mutex);
92 if ((atomic_read(&wka_port->refcount) != 0) ||
93 (wka_port->status != ZFCP_WKA_PORT_ONLINE))
96 wka_port->status = ZFCP_WKA_PORT_CLOSING;
97 if (zfcp_fsf_close_wka_port(wka_port)) {
98 wka_port->status = ZFCP_WKA_PORT_OFFLINE;
99 wake_up(&wka_port->completion_wq);
102 mutex_unlock(&wka_port->mutex);
105 static void zfcp_fc_wka_port_put(struct zfcp_wka_port *wka_port)
107 if (atomic_dec_return(&wka_port->refcount) != 0)
109 /* wait 10 milliseconds, other reqs might pop in */
110 schedule_delayed_work(&wka_port->work, HZ / 100);
113 static void zfcp_fc_wka_port_init(struct zfcp_wka_port *wka_port, u32 d_id,
114 struct zfcp_adapter *adapter)
116 init_waitqueue_head(&wka_port->completion_wq);
118 wka_port->adapter = adapter;
119 wka_port->d_id = d_id;
121 wka_port->status = ZFCP_WKA_PORT_OFFLINE;
122 atomic_set(&wka_port->refcount, 0);
123 mutex_init(&wka_port->mutex);
124 INIT_DELAYED_WORK(&wka_port->work, zfcp_fc_wka_port_offline);
127 static void zfcp_fc_wka_port_force_offline(struct zfcp_wka_port *wka)
129 cancel_delayed_work_sync(&wka->work);
130 mutex_lock(&wka->mutex);
131 wka->status = ZFCP_WKA_PORT_OFFLINE;
132 mutex_unlock(&wka->mutex);
135 void zfcp_fc_wka_ports_force_offline(struct zfcp_wka_ports *gs)
139 zfcp_fc_wka_port_force_offline(&gs->ms);
140 zfcp_fc_wka_port_force_offline(&gs->ts);
141 zfcp_fc_wka_port_force_offline(&gs->ds);
142 zfcp_fc_wka_port_force_offline(&gs->as);
143 zfcp_fc_wka_port_force_offline(&gs->ks);
146 static void _zfcp_fc_incoming_rscn(struct zfcp_fsf_req *fsf_req, u32 range,
147 struct fcp_rscn_element *elem)
150 struct zfcp_adapter *adapter = fsf_req->adapter;
151 struct zfcp_port *port;
153 read_lock_irqsave(&adapter->port_list_lock, flags);
154 list_for_each_entry(port, &adapter->port_list, list) {
155 if ((port->d_id & range) == (elem->nport_did & range))
156 zfcp_fc_test_link(port);
158 zfcp_erp_port_reopen(port,
159 ZFCP_STATUS_COMMON_ERP_FAILED,
162 read_unlock_irqrestore(&adapter->port_list_lock, flags);
165 static void zfcp_fc_incoming_rscn(struct zfcp_fsf_req *fsf_req)
167 struct fsf_status_read_buffer *status_buffer = (void *)fsf_req->data;
168 struct fcp_rscn_head *fcp_rscn_head;
169 struct fcp_rscn_element *fcp_rscn_element;
174 fcp_rscn_head = (struct fcp_rscn_head *) status_buffer->payload.data;
175 fcp_rscn_element = (struct fcp_rscn_element *) fcp_rscn_head;
178 no_entries = fcp_rscn_head->payload_len /
179 sizeof(struct fcp_rscn_element);
181 for (i = 1; i < no_entries; i++) {
182 /* skip head and start with 1st element */
184 range_mask = rscn_range_mask[fcp_rscn_element->addr_format];
185 _zfcp_fc_incoming_rscn(fsf_req, range_mask, fcp_rscn_element);
187 queue_work(fsf_req->adapter->work_queue, &fsf_req->adapter->scan_work);
190 static void zfcp_fc_incoming_wwpn(struct zfcp_fsf_req *req, u64 wwpn)
193 struct zfcp_adapter *adapter = req->adapter;
194 struct zfcp_port *port;
196 read_lock_irqsave(&adapter->port_list_lock, flags);
197 list_for_each_entry(port, &adapter->port_list, list)
198 if (port->wwpn == wwpn) {
199 zfcp_erp_port_forced_reopen(port, 0, "fciwwp1", req);
202 read_unlock_irqrestore(&adapter->port_list_lock, flags);
205 static void zfcp_fc_incoming_plogi(struct zfcp_fsf_req *req)
207 struct fsf_status_read_buffer *status_buffer =
208 (struct fsf_status_read_buffer *)req->data;
209 struct fsf_plogi *els_plogi =
210 (struct fsf_plogi *) status_buffer->payload.data;
212 zfcp_fc_incoming_wwpn(req, els_plogi->serv_param.wwpn);
215 static void zfcp_fc_incoming_logo(struct zfcp_fsf_req *req)
217 struct fsf_status_read_buffer *status_buffer =
218 (struct fsf_status_read_buffer *)req->data;
219 struct fcp_logo *els_logo =
220 (struct fcp_logo *) status_buffer->payload.data;
222 zfcp_fc_incoming_wwpn(req, els_logo->nport_wwpn);
226 * zfcp_fc_incoming_els - handle incoming ELS
227 * @fsf_req - request which contains incoming ELS
229 void zfcp_fc_incoming_els(struct zfcp_fsf_req *fsf_req)
231 struct fsf_status_read_buffer *status_buffer =
232 (struct fsf_status_read_buffer *) fsf_req->data;
233 unsigned int els_type = status_buffer->payload.data[0];
235 zfcp_dbf_san_incoming_els(fsf_req);
236 if (els_type == LS_PLOGI)
237 zfcp_fc_incoming_plogi(fsf_req);
238 else if (els_type == LS_LOGO)
239 zfcp_fc_incoming_logo(fsf_req);
240 else if (els_type == LS_RSCN)
241 zfcp_fc_incoming_rscn(fsf_req);
244 static void zfcp_fc_ns_handler(unsigned long data)
246 struct zfcp_fc_ns_handler_data *compl_rec =
247 (struct zfcp_fc_ns_handler_data *) data;
249 if (compl_rec->handler)
250 compl_rec->handler(compl_rec->handler_data);
252 complete(&compl_rec->done);
255 static void zfcp_fc_ns_gid_pn_eval(unsigned long data)
257 struct zfcp_gid_pn_data *gid_pn = (struct zfcp_gid_pn_data *) data;
258 struct zfcp_send_ct *ct = &gid_pn->ct;
259 struct ct_iu_gid_pn_req *ct_iu_req = sg_virt(ct->req);
260 struct ct_iu_gid_pn_resp *ct_iu_resp = sg_virt(ct->resp);
261 struct zfcp_port *port = gid_pn->port;
265 if (ct_iu_resp->header.cmd_rsp_code != ZFCP_CT_ACCEPT)
269 if (ct_iu_req->wwpn != port->wwpn)
271 /* looks like a valid d_id */
272 port->d_id = ct_iu_resp->d_id & ZFCP_DID_MASK;
275 static int zfcp_fc_ns_gid_pn_request(struct zfcp_port *port,
276 struct zfcp_gid_pn_data *gid_pn)
278 struct zfcp_adapter *adapter = port->adapter;
279 struct zfcp_fc_ns_handler_data compl_rec;
282 /* setup parameters for send generic command */
284 gid_pn->ct.wka_port = &adapter->gs->ds;
285 gid_pn->ct.handler = zfcp_fc_ns_handler;
286 gid_pn->ct.handler_data = (unsigned long) &compl_rec;
287 gid_pn->ct.req = &gid_pn->req;
288 gid_pn->ct.resp = &gid_pn->resp;
289 sg_init_one(&gid_pn->req, &gid_pn->ct_iu_req,
290 sizeof(struct ct_iu_gid_pn_req));
291 sg_init_one(&gid_pn->resp, &gid_pn->ct_iu_resp,
292 sizeof(struct ct_iu_gid_pn_resp));
294 /* setup nameserver request */
295 gid_pn->ct_iu_req.header.revision = ZFCP_CT_REVISION;
296 gid_pn->ct_iu_req.header.gs_type = ZFCP_CT_DIRECTORY_SERVICE;
297 gid_pn->ct_iu_req.header.gs_subtype = ZFCP_CT_NAME_SERVER;
298 gid_pn->ct_iu_req.header.options = ZFCP_CT_SYNCHRONOUS;
299 gid_pn->ct_iu_req.header.cmd_rsp_code = ZFCP_CT_GID_PN;
300 gid_pn->ct_iu_req.header.max_res_size = ZFCP_CT_SIZE_ONE_PAGE / 4;
301 gid_pn->ct_iu_req.wwpn = port->wwpn;
303 init_completion(&compl_rec.done);
304 compl_rec.handler = zfcp_fc_ns_gid_pn_eval;
305 compl_rec.handler_data = (unsigned long) gid_pn;
306 ret = zfcp_fsf_send_ct(&gid_pn->ct, adapter->pool.gid_pn_req);
308 wait_for_completion(&compl_rec.done);
313 * zfcp_fc_ns_gid_pn_request - initiate GID_PN nameserver request
314 * @port: port where GID_PN request is needed
315 * return: -ENOMEM on error, 0 otherwise
317 static int zfcp_fc_ns_gid_pn(struct zfcp_port *port)
320 struct zfcp_gid_pn_data *gid_pn;
321 struct zfcp_adapter *adapter = port->adapter;
323 gid_pn = mempool_alloc(adapter->pool.gid_pn_data, GFP_ATOMIC);
327 memset(gid_pn, 0, sizeof(*gid_pn));
329 ret = zfcp_fc_wka_port_get(&adapter->gs->ds);
333 ret = zfcp_fc_ns_gid_pn_request(port, gid_pn);
335 zfcp_fc_wka_port_put(&adapter->gs->ds);
337 mempool_free(gid_pn, adapter->pool.gid_pn_data);
341 void zfcp_fc_port_did_lookup(struct work_struct *work)
344 struct zfcp_port *port = container_of(work, struct zfcp_port,
347 ret = zfcp_fc_ns_gid_pn(port);
349 /* could not issue gid_pn for some reason */
350 zfcp_erp_adapter_reopen(port->adapter, 0, "fcgpn_1", NULL);
355 zfcp_erp_port_failed(port, "fcgpn_2", NULL);
359 zfcp_erp_port_reopen(port, 0, "fcgpn_3", NULL);
361 put_device(&port->sysfs_device);
365 * zfcp_fc_trigger_did_lookup - trigger the d_id lookup using a GID_PN request
366 * @port: The zfcp_port to lookup the d_id for.
368 void zfcp_fc_trigger_did_lookup(struct zfcp_port *port)
370 get_device(&port->sysfs_device);
371 if (!queue_work(port->adapter->work_queue, &port->gid_pn_work))
372 put_device(&port->sysfs_device);
376 * zfcp_fc_plogi_evaluate - evaluate PLOGI playload
377 * @port: zfcp_port structure
378 * @plogi: plogi payload
380 * Evaluate PLOGI playload and copy important fields into zfcp_port structure
382 void zfcp_fc_plogi_evaluate(struct zfcp_port *port, struct fsf_plogi *plogi)
384 port->maxframe_size = plogi->serv_param.common_serv_param[7] |
385 ((plogi->serv_param.common_serv_param[6] & 0x0F) << 8);
386 if (plogi->serv_param.class1_serv_param[0] & 0x80)
387 port->supported_classes |= FC_COS_CLASS1;
388 if (plogi->serv_param.class2_serv_param[0] & 0x80)
389 port->supported_classes |= FC_COS_CLASS2;
390 if (plogi->serv_param.class3_serv_param[0] & 0x80)
391 port->supported_classes |= FC_COS_CLASS3;
392 if (plogi->serv_param.class4_serv_param[0] & 0x80)
393 port->supported_classes |= FC_COS_CLASS4;
396 struct zfcp_els_adisc {
397 struct zfcp_send_els els;
398 struct scatterlist req;
399 struct scatterlist resp;
400 struct zfcp_ls_adisc ls_adisc;
401 struct zfcp_ls_adisc ls_adisc_acc;
404 static void zfcp_fc_adisc_handler(unsigned long data)
406 struct zfcp_els_adisc *adisc = (struct zfcp_els_adisc *) data;
407 struct zfcp_port *port = adisc->els.port;
408 struct zfcp_ls_adisc *ls_adisc = &adisc->ls_adisc_acc;
410 if (adisc->els.status) {
411 /* request rejected or timed out */
412 zfcp_erp_port_forced_reopen(port, ZFCP_STATUS_COMMON_ERP_FAILED,
418 port->wwnn = ls_adisc->wwnn;
420 if ((port->wwpn != ls_adisc->wwpn) ||
421 !(atomic_read(&port->status) & ZFCP_STATUS_COMMON_OPEN)) {
422 zfcp_erp_port_reopen(port, ZFCP_STATUS_COMMON_ERP_FAILED,
427 /* port is good, unblock rport without going through erp */
428 zfcp_scsi_schedule_rport_register(port);
430 atomic_clear_mask(ZFCP_STATUS_PORT_LINK_TEST, &port->status);
431 put_device(&port->sysfs_device);
435 static int zfcp_fc_adisc(struct zfcp_port *port)
437 struct zfcp_els_adisc *adisc;
438 struct zfcp_adapter *adapter = port->adapter;
440 adisc = kzalloc(sizeof(struct zfcp_els_adisc), GFP_ATOMIC);
444 adisc->els.req = &adisc->req;
445 adisc->els.resp = &adisc->resp;
446 sg_init_one(adisc->els.req, &adisc->ls_adisc,
447 sizeof(struct zfcp_ls_adisc));
448 sg_init_one(adisc->els.resp, &adisc->ls_adisc_acc,
449 sizeof(struct zfcp_ls_adisc));
451 adisc->els.adapter = adapter;
452 adisc->els.port = port;
453 adisc->els.d_id = port->d_id;
454 adisc->els.handler = zfcp_fc_adisc_handler;
455 adisc->els.handler_data = (unsigned long) adisc;
456 adisc->els.ls_code = adisc->ls_adisc.code = ZFCP_LS_ADISC;
458 /* acc. to FC-FS, hard_nport_id in ADISC should not be set for ports
459 without FC-AL-2 capability, so we don't set it */
460 adisc->ls_adisc.wwpn = fc_host_port_name(adapter->scsi_host);
461 adisc->ls_adisc.wwnn = fc_host_node_name(adapter->scsi_host);
462 adisc->ls_adisc.nport_id = fc_host_port_id(adapter->scsi_host);
464 return zfcp_fsf_send_els(&adisc->els);
467 void zfcp_fc_link_test_work(struct work_struct *work)
469 struct zfcp_port *port =
470 container_of(work, struct zfcp_port, test_link_work);
473 get_device(&port->sysfs_device);
474 port->rport_task = RPORT_DEL;
475 zfcp_scsi_rport_work(&port->rport_work);
477 /* only issue one test command at one time per port */
478 if (atomic_read(&port->status) & ZFCP_STATUS_PORT_LINK_TEST)
481 atomic_set_mask(ZFCP_STATUS_PORT_LINK_TEST, &port->status);
483 retval = zfcp_fc_adisc(port);
487 /* send of ADISC was not possible */
488 atomic_clear_mask(ZFCP_STATUS_PORT_LINK_TEST, &port->status);
489 zfcp_erp_port_forced_reopen(port, 0, "fcltwk1", NULL);
492 put_device(&port->sysfs_device);
496 * zfcp_fc_test_link - lightweight link test procedure
497 * @port: port to be tested
499 * Test status of a link to a remote port using the ELS command ADISC.
500 * If there is a problem with the remote port, error recovery steps
503 void zfcp_fc_test_link(struct zfcp_port *port)
505 get_device(&port->sysfs_device);
506 if (!queue_work(port->adapter->work_queue, &port->test_link_work))
507 put_device(&port->sysfs_device);
510 static void zfcp_free_sg_env(struct zfcp_gpn_ft *gpn_ft, int buf_num)
512 struct scatterlist *sg = &gpn_ft->sg_req;
514 kmem_cache_free(zfcp_data.gpn_ft_cache, sg_virt(sg));
515 zfcp_sg_free_table(gpn_ft->sg_resp, buf_num);
520 static struct zfcp_gpn_ft *zfcp_alloc_sg_env(int buf_num)
522 struct zfcp_gpn_ft *gpn_ft;
523 struct ct_iu_gpn_ft_req *req;
525 gpn_ft = kzalloc(sizeof(*gpn_ft), GFP_KERNEL);
529 req = kmem_cache_alloc(zfcp_data.gpn_ft_cache, GFP_KERNEL);
535 sg_init_one(&gpn_ft->sg_req, req, sizeof(*req));
537 if (zfcp_sg_setup_table(gpn_ft->sg_resp, buf_num)) {
538 zfcp_free_sg_env(gpn_ft, buf_num);
546 static int zfcp_fc_send_gpn_ft(struct zfcp_gpn_ft *gpn_ft,
547 struct zfcp_adapter *adapter, int max_bytes)
549 struct zfcp_send_ct *ct = &gpn_ft->ct;
550 struct ct_iu_gpn_ft_req *req = sg_virt(&gpn_ft->sg_req);
551 struct zfcp_fc_ns_handler_data compl_rec;
554 /* prepare CT IU for GPN_FT */
555 req->header.revision = ZFCP_CT_REVISION;
556 req->header.gs_type = ZFCP_CT_DIRECTORY_SERVICE;
557 req->header.gs_subtype = ZFCP_CT_NAME_SERVER;
558 req->header.options = ZFCP_CT_SYNCHRONOUS;
559 req->header.cmd_rsp_code = ZFCP_CT_GPN_FT;
560 req->header.max_res_size = max_bytes / 4;
562 req->domain_id_scope = 0;
563 req->area_id_scope = 0;
564 req->fc4_type = ZFCP_CT_SCSI_FCP;
566 /* prepare zfcp_send_ct */
567 ct->wka_port = &adapter->gs->ds;
568 ct->handler = zfcp_fc_ns_handler;
569 ct->handler_data = (unsigned long)&compl_rec;
570 ct->req = &gpn_ft->sg_req;
571 ct->resp = gpn_ft->sg_resp;
573 init_completion(&compl_rec.done);
574 compl_rec.handler = NULL;
575 ret = zfcp_fsf_send_ct(ct, NULL);
577 wait_for_completion(&compl_rec.done);
581 static void zfcp_fc_validate_port(struct zfcp_port *port, struct list_head *lh)
583 if (!(atomic_read(&port->status) & ZFCP_STATUS_COMMON_NOESC))
586 atomic_clear_mask(ZFCP_STATUS_COMMON_NOESC, &port->status);
588 if ((port->supported_classes != 0) ||
589 !list_empty(&port->unit_list))
592 list_move_tail(&port->list, lh);
595 static int zfcp_fc_eval_gpn_ft(struct zfcp_gpn_ft *gpn_ft, int max_entries)
597 struct zfcp_send_ct *ct = &gpn_ft->ct;
598 struct scatterlist *sg = gpn_ft->sg_resp;
599 struct ct_hdr *hdr = sg_virt(sg);
600 struct gpn_ft_resp_acc *acc = sg_virt(sg);
601 struct zfcp_adapter *adapter = ct->wka_port->adapter;
602 struct zfcp_port *port, *tmp;
604 LIST_HEAD(remove_lh);
606 int ret = 0, x, last = 0;
611 if (hdr->cmd_rsp_code != ZFCP_CT_ACCEPT) {
612 if (hdr->reason_code == ZFCP_CT_UNABLE_TO_PERFORM_CMD)
613 return -EAGAIN; /* might be a temporary condition */
617 if (hdr->max_res_size) {
618 dev_warn(&adapter->ccw_device->dev,
619 "The name server reported %d words residual data\n",
624 /* first entry is the header */
625 for (x = 1; x < max_entries && !last; x++) {
626 if (x % (ZFCP_GPN_FT_ENTRIES + 1))
631 last = acc->control & 0x80;
632 d_id = acc->port_id[0] << 16 | acc->port_id[1] << 8 |
635 /* don't attach ports with a well known address */
636 if ((d_id & ZFCP_DID_WKA) == ZFCP_DID_WKA)
638 /* skip the adapter's port and known remote ports */
639 if (acc->wwpn == fc_host_port_name(adapter->scsi_host))
642 port = zfcp_port_enqueue(adapter, acc->wwpn,
643 ZFCP_STATUS_COMMON_NOESC, d_id);
645 zfcp_erp_port_reopen(port, 0, "fcegpf1", NULL);
646 else if (PTR_ERR(port) != -EEXIST)
650 zfcp_erp_wait(adapter);
651 write_lock_irqsave(&adapter->port_list_lock, flags);
652 list_for_each_entry_safe(port, tmp, &adapter->port_list, list)
653 zfcp_fc_validate_port(port, &remove_lh);
654 write_unlock_irqrestore(&adapter->port_list_lock, flags);
656 list_for_each_entry_safe(port, tmp, &remove_lh, list) {
657 zfcp_erp_port_shutdown(port, 0, "fcegpf2", NULL);
658 zfcp_device_unregister(&port->sysfs_device,
659 &zfcp_sysfs_port_attrs);
666 * zfcp_fc_scan_ports - scan remote ports and attach new ports
667 * @work: reference to scheduled work
669 void zfcp_fc_scan_ports(struct work_struct *work)
671 struct zfcp_adapter *adapter = container_of(work, struct zfcp_adapter,
674 struct zfcp_gpn_ft *gpn_ft;
675 int chain, max_entries, buf_num, max_bytes;
677 chain = adapter->adapter_features & FSF_FEATURE_ELS_CT_CHAINED_SBALS;
678 buf_num = chain ? ZFCP_GPN_FT_BUFFERS : 1;
679 max_entries = chain ? ZFCP_GPN_FT_MAX_ENTRIES : ZFCP_GPN_FT_ENTRIES;
680 max_bytes = chain ? ZFCP_GPN_FT_MAX_SIZE : ZFCP_CT_SIZE_ONE_PAGE;
682 if (fc_host_port_type(adapter->scsi_host) != FC_PORTTYPE_NPORT &&
683 fc_host_port_type(adapter->scsi_host) != FC_PORTTYPE_NPIV)
686 if (zfcp_fc_wka_port_get(&adapter->gs->ds))
689 gpn_ft = zfcp_alloc_sg_env(buf_num);
693 for (i = 0; i < 3; i++) {
694 ret = zfcp_fc_send_gpn_ft(gpn_ft, adapter, max_bytes);
696 ret = zfcp_fc_eval_gpn_ft(gpn_ft, max_entries);
703 zfcp_free_sg_env(gpn_ft, buf_num);
705 zfcp_fc_wka_port_put(&adapter->gs->ds);
709 struct zfcp_els_fc_job {
710 struct zfcp_send_els els;
711 struct fc_bsg_job *job;
714 static void zfcp_fc_generic_els_handler(unsigned long data)
716 struct zfcp_els_fc_job *els_fc_job = (struct zfcp_els_fc_job *) data;
717 struct fc_bsg_job *job = els_fc_job->job;
718 struct fc_bsg_reply *reply = job->reply;
720 if (els_fc_job->els.status) {
721 /* request rejected or timed out */
722 reply->reply_data.ctels_reply.status = FC_CTELS_STATUS_REJECT;
726 reply->reply_data.ctels_reply.status = FC_CTELS_STATUS_OK;
727 reply->reply_payload_rcv_len = job->reply_payload.payload_len;
730 job->state_flags = FC_RQST_STATE_DONE;
735 int zfcp_fc_execute_els_fc_job(struct fc_bsg_job *job)
737 struct zfcp_els_fc_job *els_fc_job;
738 struct fc_rport *rport = job->rport;
739 struct Scsi_Host *shost;
740 struct zfcp_adapter *adapter;
741 struct zfcp_port *port;
744 shost = rport ? rport_to_shost(rport) : job->shost;
745 adapter = (struct zfcp_adapter *)shost->hostdata[0];
747 if (!(atomic_read(&adapter->status) & ZFCP_STATUS_COMMON_OPEN))
750 els_fc_job = kzalloc(sizeof(struct zfcp_els_fc_job), GFP_KERNEL);
754 els_fc_job->els.adapter = adapter;
756 port = zfcp_get_port_by_wwpn(adapter, rport->port_name);
762 els_fc_job->els.d_id = port->d_id;
763 put_device(&port->sysfs_device);
765 port_did = job->request->rqst_data.h_els.port_id;
766 els_fc_job->els.d_id = (port_did[0] << 16) +
767 (port_did[1] << 8) + port_did[2];
770 els_fc_job->els.req = job->request_payload.sg_list;
771 els_fc_job->els.resp = job->reply_payload.sg_list;
772 els_fc_job->els.handler = zfcp_fc_generic_els_handler;
773 els_fc_job->els.handler_data = (unsigned long) els_fc_job;
774 els_fc_job->job = job;
776 return zfcp_fsf_send_els(&els_fc_job->els);
779 struct zfcp_ct_fc_job {
780 struct zfcp_send_ct ct;
781 struct fc_bsg_job *job;
784 static void zfcp_fc_generic_ct_handler(unsigned long data)
786 struct zfcp_ct_fc_job *ct_fc_job = (struct zfcp_ct_fc_job *) data;
787 struct fc_bsg_job *job = ct_fc_job->job;
789 job->reply->reply_data.ctels_reply.status = ct_fc_job->ct.status ?
790 FC_CTELS_STATUS_REJECT : FC_CTELS_STATUS_OK;
791 job->reply->reply_payload_rcv_len = job->reply_payload.payload_len;
792 job->state_flags = FC_RQST_STATE_DONE;
795 zfcp_fc_wka_port_put(ct_fc_job->ct.wka_port);
800 int zfcp_fc_execute_ct_fc_job(struct fc_bsg_job *job)
804 struct fc_rport *rport = job->rport;
805 struct Scsi_Host *shost;
806 struct zfcp_adapter *adapter;
807 struct zfcp_ct_fc_job *ct_fc_job;
810 shost = rport ? rport_to_shost(rport) : job->shost;
812 adapter = (struct zfcp_adapter *)shost->hostdata[0];
813 if (!(atomic_read(&adapter->status) & ZFCP_STATUS_COMMON_OPEN))
816 ct_fc_job = kzalloc(sizeof(struct zfcp_ct_fc_job), GFP_KERNEL);
820 preamble_word1 = job->request->rqst_data.r_ct.preamble_word1;
821 gs_type = (preamble_word1 & 0xff000000) >> 24;
825 ct_fc_job->ct.wka_port = &adapter->gs->as;
828 ct_fc_job->ct.wka_port = &adapter->gs->ms;
831 ct_fc_job->ct.wka_port = &adapter->gs->ts;
834 ct_fc_job->ct.wka_port = &adapter->gs->ds;
838 return -EINVAL; /* no such service */
841 ret = zfcp_fc_wka_port_get(ct_fc_job->ct.wka_port);
847 ct_fc_job->ct.req = job->request_payload.sg_list;
848 ct_fc_job->ct.resp = job->reply_payload.sg_list;
849 ct_fc_job->ct.handler = zfcp_fc_generic_ct_handler;
850 ct_fc_job->ct.handler_data = (unsigned long) ct_fc_job;
851 ct_fc_job->ct.completion = NULL;
852 ct_fc_job->job = job;
854 ret = zfcp_fsf_send_ct(&ct_fc_job->ct, NULL);
857 zfcp_fc_wka_port_put(ct_fc_job->ct.wka_port);
862 int zfcp_fc_gs_setup(struct zfcp_adapter *adapter)
864 struct zfcp_wka_ports *wka_ports;
866 wka_ports = kzalloc(sizeof(struct zfcp_wka_ports), GFP_KERNEL);
870 adapter->gs = wka_ports;
871 zfcp_fc_wka_port_init(&wka_ports->ms, FC_FID_MGMT_SERV, adapter);
872 zfcp_fc_wka_port_init(&wka_ports->ts, FC_FID_TIME_SERV, adapter);
873 zfcp_fc_wka_port_init(&wka_ports->ds, FC_FID_DIR_SERV, adapter);
874 zfcp_fc_wka_port_init(&wka_ports->as, FC_FID_ALIASES, adapter);
875 zfcp_fc_wka_port_init(&wka_ports->ks, FC_FID_SEC_KEY, adapter);
880 void zfcp_fc_gs_destroy(struct zfcp_adapter *adapter)