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
12 #include <linux/types.h>
13 #include <scsi/fc/fc_els.h>
14 #include <scsi/libfc.h>
18 static u32 zfcp_fc_rscn_range_mask[] = {
19 [ELS_ADDR_FMT_PORT] = 0xFFFFFF,
20 [ELS_ADDR_FMT_AREA] = 0xFFFF00,
21 [ELS_ADDR_FMT_DOM] = 0xFF0000,
22 [ELS_ADDR_FMT_FAB] = 0x000000,
25 static int zfcp_fc_wka_port_get(struct zfcp_fc_wka_port *wka_port)
27 if (mutex_lock_interruptible(&wka_port->mutex))
30 if (wka_port->status == ZFCP_FC_WKA_PORT_OFFLINE ||
31 wka_port->status == ZFCP_FC_WKA_PORT_CLOSING) {
32 wka_port->status = ZFCP_FC_WKA_PORT_OPENING;
33 if (zfcp_fsf_open_wka_port(wka_port))
34 wka_port->status = ZFCP_FC_WKA_PORT_OFFLINE;
37 mutex_unlock(&wka_port->mutex);
39 wait_event(wka_port->completion_wq,
40 wka_port->status == ZFCP_FC_WKA_PORT_ONLINE ||
41 wka_port->status == ZFCP_FC_WKA_PORT_OFFLINE);
43 if (wka_port->status == ZFCP_FC_WKA_PORT_ONLINE) {
44 atomic_inc(&wka_port->refcount);
50 static void zfcp_fc_wka_port_offline(struct work_struct *work)
52 struct delayed_work *dw = to_delayed_work(work);
53 struct zfcp_fc_wka_port *wka_port =
54 container_of(dw, struct zfcp_fc_wka_port, work);
56 mutex_lock(&wka_port->mutex);
57 if ((atomic_read(&wka_port->refcount) != 0) ||
58 (wka_port->status != ZFCP_FC_WKA_PORT_ONLINE))
61 wka_port->status = ZFCP_FC_WKA_PORT_CLOSING;
62 if (zfcp_fsf_close_wka_port(wka_port)) {
63 wka_port->status = ZFCP_FC_WKA_PORT_OFFLINE;
64 wake_up(&wka_port->completion_wq);
67 mutex_unlock(&wka_port->mutex);
70 static void zfcp_fc_wka_port_put(struct zfcp_fc_wka_port *wka_port)
72 if (atomic_dec_return(&wka_port->refcount) != 0)
74 /* wait 10 milliseconds, other reqs might pop in */
75 schedule_delayed_work(&wka_port->work, HZ / 100);
78 static void zfcp_fc_wka_port_init(struct zfcp_fc_wka_port *wka_port, u32 d_id,
79 struct zfcp_adapter *adapter)
81 init_waitqueue_head(&wka_port->completion_wq);
83 wka_port->adapter = adapter;
84 wka_port->d_id = d_id;
86 wka_port->status = ZFCP_FC_WKA_PORT_OFFLINE;
87 atomic_set(&wka_port->refcount, 0);
88 mutex_init(&wka_port->mutex);
89 INIT_DELAYED_WORK(&wka_port->work, zfcp_fc_wka_port_offline);
92 static void zfcp_fc_wka_port_force_offline(struct zfcp_fc_wka_port *wka)
94 cancel_delayed_work_sync(&wka->work);
95 mutex_lock(&wka->mutex);
96 wka->status = ZFCP_FC_WKA_PORT_OFFLINE;
97 mutex_unlock(&wka->mutex);
100 void zfcp_fc_wka_ports_force_offline(struct zfcp_fc_wka_ports *gs)
104 zfcp_fc_wka_port_force_offline(&gs->ms);
105 zfcp_fc_wka_port_force_offline(&gs->ts);
106 zfcp_fc_wka_port_force_offline(&gs->ds);
107 zfcp_fc_wka_port_force_offline(&gs->as);
110 static void _zfcp_fc_incoming_rscn(struct zfcp_fsf_req *fsf_req, u32 range,
111 struct fc_els_rscn_page *page)
114 struct zfcp_adapter *adapter = fsf_req->adapter;
115 struct zfcp_port *port;
117 read_lock_irqsave(&adapter->port_list_lock, flags);
118 list_for_each_entry(port, &adapter->port_list, list) {
119 if ((port->d_id & range) == (ntoh24(page->rscn_fid) & range))
120 zfcp_fc_test_link(port);
122 zfcp_erp_port_reopen(port,
123 ZFCP_STATUS_COMMON_ERP_FAILED,
126 read_unlock_irqrestore(&adapter->port_list_lock, flags);
129 static void zfcp_fc_incoming_rscn(struct zfcp_fsf_req *fsf_req)
131 struct fsf_status_read_buffer *status_buffer = (void *)fsf_req->data;
132 struct fc_els_rscn *head;
133 struct fc_els_rscn_page *page;
138 head = (struct fc_els_rscn *) status_buffer->payload.data;
139 page = (struct fc_els_rscn_page *) head;
142 no_entries = head->rscn_plen / sizeof(struct fc_els_rscn_page);
144 for (i = 1; i < no_entries; i++) {
145 /* skip head and start with 1st element */
147 afmt = page->rscn_page_flags & ELS_RSCN_ADDR_FMT_MASK;
148 _zfcp_fc_incoming_rscn(fsf_req, zfcp_fc_rscn_range_mask[afmt],
151 queue_work(fsf_req->adapter->work_queue, &fsf_req->adapter->scan_work);
154 static void zfcp_fc_incoming_wwpn(struct zfcp_fsf_req *req, u64 wwpn)
157 struct zfcp_adapter *adapter = req->adapter;
158 struct zfcp_port *port;
160 read_lock_irqsave(&adapter->port_list_lock, flags);
161 list_for_each_entry(port, &adapter->port_list, list)
162 if (port->wwpn == wwpn) {
163 zfcp_erp_port_forced_reopen(port, 0, "fciwwp1", req);
166 read_unlock_irqrestore(&adapter->port_list_lock, flags);
169 static void zfcp_fc_incoming_plogi(struct zfcp_fsf_req *req)
171 struct fsf_status_read_buffer *status_buffer;
172 struct fc_els_flogi *plogi;
174 status_buffer = (struct fsf_status_read_buffer *) req->data;
175 plogi = (struct fc_els_flogi *) status_buffer->payload.data;
176 zfcp_fc_incoming_wwpn(req, plogi->fl_wwpn);
179 static void zfcp_fc_incoming_logo(struct zfcp_fsf_req *req)
181 struct fsf_status_read_buffer *status_buffer =
182 (struct fsf_status_read_buffer *)req->data;
183 struct fc_els_logo *logo =
184 (struct fc_els_logo *) status_buffer->payload.data;
186 zfcp_fc_incoming_wwpn(req, logo->fl_n_port_wwn);
190 * zfcp_fc_incoming_els - handle incoming ELS
191 * @fsf_req - request which contains incoming ELS
193 void zfcp_fc_incoming_els(struct zfcp_fsf_req *fsf_req)
195 struct fsf_status_read_buffer *status_buffer =
196 (struct fsf_status_read_buffer *) fsf_req->data;
197 unsigned int els_type = status_buffer->payload.data[0];
199 zfcp_dbf_san_incoming_els(fsf_req);
200 if (els_type == ELS_PLOGI)
201 zfcp_fc_incoming_plogi(fsf_req);
202 else if (els_type == ELS_LOGO)
203 zfcp_fc_incoming_logo(fsf_req);
204 else if (els_type == ELS_RSCN)
205 zfcp_fc_incoming_rscn(fsf_req);
208 static void zfcp_fc_ns_gid_pn_eval(void *data)
210 struct zfcp_fc_gid_pn *gid_pn = data;
211 struct zfcp_fsf_ct_els *ct = &gid_pn->ct;
212 struct zfcp_fc_gid_pn_req *gid_pn_req = sg_virt(ct->req);
213 struct zfcp_fc_gid_pn_resp *gid_pn_resp = sg_virt(ct->resp);
214 struct zfcp_port *port = gid_pn->port;
218 if (gid_pn_resp->ct_hdr.ct_cmd != FC_FS_ACC)
222 if (gid_pn_req->gid_pn.fn_wwpn != port->wwpn)
224 /* looks like a valid d_id */
225 port->d_id = ntoh24(gid_pn_resp->gid_pn.fp_fid);
228 static void zfcp_fc_complete(void *data)
233 static int zfcp_fc_ns_gid_pn_request(struct zfcp_port *port,
234 struct zfcp_fc_gid_pn *gid_pn)
236 struct zfcp_adapter *adapter = port->adapter;
237 DECLARE_COMPLETION_ONSTACK(completion);
240 /* setup parameters for send generic command */
242 gid_pn->ct.handler = zfcp_fc_complete;
243 gid_pn->ct.handler_data = &completion;
244 gid_pn->ct.req = &gid_pn->sg_req;
245 gid_pn->ct.resp = &gid_pn->sg_resp;
246 sg_init_one(&gid_pn->sg_req, &gid_pn->gid_pn_req,
247 sizeof(struct zfcp_fc_gid_pn_req));
248 sg_init_one(&gid_pn->sg_resp, &gid_pn->gid_pn_resp,
249 sizeof(struct zfcp_fc_gid_pn_resp));
251 /* setup nameserver request */
252 gid_pn->gid_pn_req.ct_hdr.ct_rev = FC_CT_REV;
253 gid_pn->gid_pn_req.ct_hdr.ct_fs_type = FC_FST_DIR;
254 gid_pn->gid_pn_req.ct_hdr.ct_fs_subtype = FC_NS_SUBTYPE;
255 gid_pn->gid_pn_req.ct_hdr.ct_options = 0;
256 gid_pn->gid_pn_req.ct_hdr.ct_cmd = FC_NS_GID_PN;
257 gid_pn->gid_pn_req.ct_hdr.ct_mr_size = ZFCP_FC_CT_SIZE_PAGE / 4;
258 gid_pn->gid_pn_req.gid_pn.fn_wwpn = port->wwpn;
260 ret = zfcp_fsf_send_ct(&adapter->gs->ds, &gid_pn->ct,
261 adapter->pool.gid_pn_req,
264 wait_for_completion(&completion);
265 zfcp_fc_ns_gid_pn_eval(gid_pn);
271 * zfcp_fc_ns_gid_pn_request - initiate GID_PN nameserver request
272 * @port: port where GID_PN request is needed
273 * return: -ENOMEM on error, 0 otherwise
275 static int zfcp_fc_ns_gid_pn(struct zfcp_port *port)
278 struct zfcp_fc_gid_pn *gid_pn;
279 struct zfcp_adapter *adapter = port->adapter;
281 gid_pn = mempool_alloc(adapter->pool.gid_pn, GFP_ATOMIC);
285 memset(gid_pn, 0, sizeof(*gid_pn));
287 ret = zfcp_fc_wka_port_get(&adapter->gs->ds);
291 ret = zfcp_fc_ns_gid_pn_request(port, gid_pn);
293 zfcp_fc_wka_port_put(&adapter->gs->ds);
295 mempool_free(gid_pn, adapter->pool.gid_pn);
299 void zfcp_fc_port_did_lookup(struct work_struct *work)
302 struct zfcp_port *port = container_of(work, struct zfcp_port,
305 ret = zfcp_fc_ns_gid_pn(port);
307 /* could not issue gid_pn for some reason */
308 zfcp_erp_adapter_reopen(port->adapter, 0, "fcgpn_1", NULL);
313 zfcp_erp_port_failed(port, "fcgpn_2", NULL);
317 zfcp_erp_port_reopen(port, 0, "fcgpn_3", NULL);
319 put_device(&port->sysfs_device);
323 * zfcp_fc_trigger_did_lookup - trigger the d_id lookup using a GID_PN request
324 * @port: The zfcp_port to lookup the d_id for.
326 void zfcp_fc_trigger_did_lookup(struct zfcp_port *port)
328 get_device(&port->sysfs_device);
329 if (!queue_work(port->adapter->work_queue, &port->gid_pn_work))
330 put_device(&port->sysfs_device);
334 * zfcp_fc_plogi_evaluate - evaluate PLOGI playload
335 * @port: zfcp_port structure
336 * @plogi: plogi payload
338 * Evaluate PLOGI playload and copy important fields into zfcp_port structure
340 void zfcp_fc_plogi_evaluate(struct zfcp_port *port, struct fc_els_flogi *plogi)
342 if (plogi->fl_wwpn != port->wwpn) {
344 dev_warn(&port->adapter->ccw_device->dev,
345 "A port opened with WWPN 0x%016Lx returned data that "
346 "identifies it as WWPN 0x%016Lx\n",
347 (unsigned long long) port->wwpn,
348 (unsigned long long) plogi->fl_wwpn);
352 port->wwnn = plogi->fl_wwnn;
353 port->maxframe_size = plogi->fl_csp.sp_bb_data;
355 if (plogi->fl_cssp[0].cp_class & FC_CPC_VALID)
356 port->supported_classes |= FC_COS_CLASS1;
357 if (plogi->fl_cssp[1].cp_class & FC_CPC_VALID)
358 port->supported_classes |= FC_COS_CLASS2;
359 if (plogi->fl_cssp[2].cp_class & FC_CPC_VALID)
360 port->supported_classes |= FC_COS_CLASS3;
361 if (plogi->fl_cssp[3].cp_class & FC_CPC_VALID)
362 port->supported_classes |= FC_COS_CLASS4;
365 static void zfcp_fc_adisc_handler(void *data)
367 struct zfcp_fc_els_adisc *adisc = data;
368 struct zfcp_port *port = adisc->els.port;
369 struct fc_els_adisc *adisc_resp = &adisc->adisc_resp;
371 if (adisc->els.status) {
372 /* request rejected or timed out */
373 zfcp_erp_port_forced_reopen(port, ZFCP_STATUS_COMMON_ERP_FAILED,
379 port->wwnn = adisc_resp->adisc_wwnn;
381 if ((port->wwpn != adisc_resp->adisc_wwpn) ||
382 !(atomic_read(&port->status) & ZFCP_STATUS_COMMON_OPEN)) {
383 zfcp_erp_port_reopen(port, ZFCP_STATUS_COMMON_ERP_FAILED,
388 /* port is good, unblock rport without going through erp */
389 zfcp_scsi_schedule_rport_register(port);
391 atomic_clear_mask(ZFCP_STATUS_PORT_LINK_TEST, &port->status);
392 put_device(&port->sysfs_device);
393 kmem_cache_free(zfcp_data.adisc_cache, adisc);
396 static int zfcp_fc_adisc(struct zfcp_port *port)
398 struct zfcp_fc_els_adisc *adisc;
399 struct zfcp_adapter *adapter = port->adapter;
402 adisc = kmem_cache_alloc(zfcp_data.adisc_cache, GFP_ATOMIC);
406 adisc->els.port = port;
407 adisc->els.req = &adisc->req;
408 adisc->els.resp = &adisc->resp;
409 sg_init_one(adisc->els.req, &adisc->adisc_req,
410 sizeof(struct fc_els_adisc));
411 sg_init_one(adisc->els.resp, &adisc->adisc_resp,
412 sizeof(struct fc_els_adisc));
414 adisc->els.handler = zfcp_fc_adisc_handler;
415 adisc->els.handler_data = adisc;
417 /* acc. to FC-FS, hard_nport_id in ADISC should not be set for ports
418 without FC-AL-2 capability, so we don't set it */
419 adisc->adisc_req.adisc_wwpn = fc_host_port_name(adapter->scsi_host);
420 adisc->adisc_req.adisc_wwnn = fc_host_node_name(adapter->scsi_host);
421 adisc->adisc_req.adisc_cmd = ELS_ADISC;
422 hton24(adisc->adisc_req.adisc_port_id,
423 fc_host_port_id(adapter->scsi_host));
425 ret = zfcp_fsf_send_els(adapter, port->d_id, &adisc->els,
428 kmem_cache_free(zfcp_data.adisc_cache, adisc);
433 void zfcp_fc_link_test_work(struct work_struct *work)
435 struct zfcp_port *port =
436 container_of(work, struct zfcp_port, test_link_work);
439 get_device(&port->sysfs_device);
440 port->rport_task = RPORT_DEL;
441 zfcp_scsi_rport_work(&port->rport_work);
443 /* only issue one test command at one time per port */
444 if (atomic_read(&port->status) & ZFCP_STATUS_PORT_LINK_TEST)
447 atomic_set_mask(ZFCP_STATUS_PORT_LINK_TEST, &port->status);
449 retval = zfcp_fc_adisc(port);
453 /* send of ADISC was not possible */
454 atomic_clear_mask(ZFCP_STATUS_PORT_LINK_TEST, &port->status);
455 zfcp_erp_port_forced_reopen(port, 0, "fcltwk1", NULL);
458 put_device(&port->sysfs_device);
462 * zfcp_fc_test_link - lightweight link test procedure
463 * @port: port to be tested
465 * Test status of a link to a remote port using the ELS command ADISC.
466 * If there is a problem with the remote port, error recovery steps
469 void zfcp_fc_test_link(struct zfcp_port *port)
471 get_device(&port->sysfs_device);
472 if (!queue_work(port->adapter->work_queue, &port->test_link_work))
473 put_device(&port->sysfs_device);
476 static void zfcp_free_sg_env(struct zfcp_fc_gpn_ft *gpn_ft, int buf_num)
478 struct scatterlist *sg = &gpn_ft->sg_req;
480 kmem_cache_free(zfcp_data.gpn_ft_cache, sg_virt(sg));
481 zfcp_sg_free_table(gpn_ft->sg_resp, buf_num);
486 static struct zfcp_fc_gpn_ft *zfcp_alloc_sg_env(int buf_num)
488 struct zfcp_fc_gpn_ft *gpn_ft;
489 struct zfcp_fc_gpn_ft_req *req;
491 gpn_ft = kzalloc(sizeof(*gpn_ft), GFP_KERNEL);
495 req = kmem_cache_alloc(zfcp_data.gpn_ft_cache, GFP_KERNEL);
501 sg_init_one(&gpn_ft->sg_req, req, sizeof(*req));
503 if (zfcp_sg_setup_table(gpn_ft->sg_resp, buf_num)) {
504 zfcp_free_sg_env(gpn_ft, buf_num);
512 static int zfcp_fc_send_gpn_ft(struct zfcp_fc_gpn_ft *gpn_ft,
513 struct zfcp_adapter *adapter, int max_bytes)
515 struct zfcp_fsf_ct_els *ct = &gpn_ft->ct;
516 struct zfcp_fc_gpn_ft_req *req = sg_virt(&gpn_ft->sg_req);
517 DECLARE_COMPLETION_ONSTACK(completion);
520 /* prepare CT IU for GPN_FT */
521 req->ct_hdr.ct_rev = FC_CT_REV;
522 req->ct_hdr.ct_fs_type = FC_FST_DIR;
523 req->ct_hdr.ct_fs_subtype = FC_NS_SUBTYPE;
524 req->ct_hdr.ct_options = 0;
525 req->ct_hdr.ct_cmd = FC_NS_GPN_FT;
526 req->ct_hdr.ct_mr_size = max_bytes / 4;
527 req->gpn_ft.fn_domain_id_scope = 0;
528 req->gpn_ft.fn_area_id_scope = 0;
529 req->gpn_ft.fn_fc4_type = FC_TYPE_FCP;
531 /* prepare zfcp_send_ct */
532 ct->handler = zfcp_fc_complete;
533 ct->handler_data = &completion;
534 ct->req = &gpn_ft->sg_req;
535 ct->resp = gpn_ft->sg_resp;
537 ret = zfcp_fsf_send_ct(&adapter->gs->ds, ct, NULL,
540 wait_for_completion(&completion);
544 static void zfcp_fc_validate_port(struct zfcp_port *port, struct list_head *lh)
546 if (!(atomic_read(&port->status) & ZFCP_STATUS_COMMON_NOESC))
549 atomic_clear_mask(ZFCP_STATUS_COMMON_NOESC, &port->status);
551 if ((port->supported_classes != 0) ||
552 !list_empty(&port->unit_list))
555 list_move_tail(&port->list, lh);
558 static int zfcp_fc_eval_gpn_ft(struct zfcp_fc_gpn_ft *gpn_ft,
559 struct zfcp_adapter *adapter, int max_entries)
561 struct zfcp_fsf_ct_els *ct = &gpn_ft->ct;
562 struct scatterlist *sg = gpn_ft->sg_resp;
563 struct fc_ct_hdr *hdr = sg_virt(sg);
564 struct fc_gpn_ft_resp *acc = sg_virt(sg);
565 struct zfcp_port *port, *tmp;
567 LIST_HEAD(remove_lh);
569 int ret = 0, x, last = 0;
574 if (hdr->ct_cmd != FC_FS_ACC) {
575 if (hdr->ct_reason == FC_BA_RJT_UNABLE)
576 return -EAGAIN; /* might be a temporary condition */
580 if (hdr->ct_mr_size) {
581 dev_warn(&adapter->ccw_device->dev,
582 "The name server reported %d words residual data\n",
587 /* first entry is the header */
588 for (x = 1; x < max_entries && !last; x++) {
589 if (x % (ZFCP_FC_GPN_FT_ENT_PAGE + 1))
594 last = acc->fp_flags & FC_NS_FID_LAST;
595 d_id = ntoh24(acc->fp_fid);
597 /* don't attach ports with a well known address */
598 if (d_id >= FC_FID_WELL_KNOWN_BASE)
600 /* skip the adapter's port and known remote ports */
601 if (acc->fp_wwpn == fc_host_port_name(adapter->scsi_host))
604 port = zfcp_port_enqueue(adapter, acc->fp_wwpn,
605 ZFCP_STATUS_COMMON_NOESC, d_id);
607 zfcp_erp_port_reopen(port, 0, "fcegpf1", NULL);
608 else if (PTR_ERR(port) != -EEXIST)
612 zfcp_erp_wait(adapter);
613 write_lock_irqsave(&adapter->port_list_lock, flags);
614 list_for_each_entry_safe(port, tmp, &adapter->port_list, list)
615 zfcp_fc_validate_port(port, &remove_lh);
616 write_unlock_irqrestore(&adapter->port_list_lock, flags);
618 list_for_each_entry_safe(port, tmp, &remove_lh, list) {
619 zfcp_erp_port_shutdown(port, 0, "fcegpf2", NULL);
620 zfcp_device_unregister(&port->sysfs_device,
621 &zfcp_sysfs_port_attrs);
628 * zfcp_fc_scan_ports - scan remote ports and attach new ports
629 * @work: reference to scheduled work
631 void zfcp_fc_scan_ports(struct work_struct *work)
633 struct zfcp_adapter *adapter = container_of(work, struct zfcp_adapter,
636 struct zfcp_fc_gpn_ft *gpn_ft;
637 int chain, max_entries, buf_num, max_bytes;
639 chain = adapter->adapter_features & FSF_FEATURE_ELS_CT_CHAINED_SBALS;
640 buf_num = chain ? ZFCP_FC_GPN_FT_NUM_BUFS : 1;
641 max_entries = chain ? ZFCP_FC_GPN_FT_MAX_ENT : ZFCP_FC_GPN_FT_ENT_PAGE;
642 max_bytes = chain ? ZFCP_FC_GPN_FT_MAX_SIZE : ZFCP_FC_CT_SIZE_PAGE;
644 if (fc_host_port_type(adapter->scsi_host) != FC_PORTTYPE_NPORT &&
645 fc_host_port_type(adapter->scsi_host) != FC_PORTTYPE_NPIV)
648 if (zfcp_fc_wka_port_get(&adapter->gs->ds))
651 gpn_ft = zfcp_alloc_sg_env(buf_num);
655 for (i = 0; i < 3; i++) {
656 ret = zfcp_fc_send_gpn_ft(gpn_ft, adapter, max_bytes);
658 ret = zfcp_fc_eval_gpn_ft(gpn_ft, adapter, max_entries);
665 zfcp_free_sg_env(gpn_ft, buf_num);
667 zfcp_fc_wka_port_put(&adapter->gs->ds);
670 static void zfcp_fc_ct_els_job_handler(void *data)
672 struct fc_bsg_job *job = data;
673 struct zfcp_fsf_ct_els *zfcp_ct_els = job->dd_data;
674 struct fc_bsg_reply *jr = job->reply;
676 jr->reply_payload_rcv_len = job->reply_payload.payload_len;
677 jr->reply_data.ctels_reply.status = FC_CTELS_STATUS_OK;
678 jr->result = zfcp_ct_els->status ? -EIO : 0;
682 static struct zfcp_fc_wka_port *zfcp_fc_job_wka_port(struct fc_bsg_job *job)
686 struct zfcp_adapter *adapter;
688 preamble_word1 = job->request->rqst_data.r_ct.preamble_word1;
689 gs_type = (preamble_word1 & 0xff000000) >> 24;
691 adapter = (struct zfcp_adapter *) job->shost->hostdata[0];
695 return &adapter->gs->as;
697 return &adapter->gs->ms;
699 return &adapter->gs->ts;
702 return &adapter->gs->ds;
709 static void zfcp_fc_ct_job_handler(void *data)
711 struct fc_bsg_job *job = data;
712 struct zfcp_fc_wka_port *wka_port;
714 wka_port = zfcp_fc_job_wka_port(job);
715 zfcp_fc_wka_port_put(wka_port);
717 zfcp_fc_ct_els_job_handler(data);
720 static int zfcp_fc_exec_els_job(struct fc_bsg_job *job,
721 struct zfcp_adapter *adapter)
723 struct zfcp_fsf_ct_els *els = job->dd_data;
724 struct fc_rport *rport = job->rport;
725 struct zfcp_port *port;
729 port = zfcp_get_port_by_wwpn(adapter, rport->port_name);
734 put_device(&port->sysfs_device);
736 d_id = ntoh24(job->request->rqst_data.h_els.port_id);
738 els->handler = zfcp_fc_ct_els_job_handler;
739 return zfcp_fsf_send_els(adapter, d_id, els, job->req->timeout / HZ);
742 static int zfcp_fc_exec_ct_job(struct fc_bsg_job *job,
743 struct zfcp_adapter *adapter)
746 struct zfcp_fsf_ct_els *ct = job->dd_data;
747 struct zfcp_fc_wka_port *wka_port;
749 wka_port = zfcp_fc_job_wka_port(job);
753 ret = zfcp_fc_wka_port_get(wka_port);
757 ct->handler = zfcp_fc_ct_job_handler;
758 ret = zfcp_fsf_send_ct(wka_port, ct, NULL, job->req->timeout / HZ);
760 zfcp_fc_wka_port_put(wka_port);
765 int zfcp_fc_exec_bsg_job(struct fc_bsg_job *job)
767 struct Scsi_Host *shost;
768 struct zfcp_adapter *adapter;
769 struct zfcp_fsf_ct_els *ct_els = job->dd_data;
771 shost = job->rport ? rport_to_shost(job->rport) : job->shost;
772 adapter = (struct zfcp_adapter *)shost->hostdata[0];
774 if (!(atomic_read(&adapter->status) & ZFCP_STATUS_COMMON_OPEN))
777 ct_els->req = job->request_payload.sg_list;
778 ct_els->resp = job->reply_payload.sg_list;
779 ct_els->handler_data = job;
781 switch (job->request->msgcode) {
783 case FC_BSG_HST_ELS_NOLOGIN:
784 return zfcp_fc_exec_els_job(job, adapter);
787 return zfcp_fc_exec_ct_job(job, adapter);
793 int zfcp_fc_timeout_bsg_job(struct fc_bsg_job *job)
795 /* hardware tracks timeout, reset bsg timeout to not interfere */
799 int zfcp_fc_gs_setup(struct zfcp_adapter *adapter)
801 struct zfcp_fc_wka_ports *wka_ports;
803 wka_ports = kzalloc(sizeof(struct zfcp_fc_wka_ports), GFP_KERNEL);
807 adapter->gs = wka_ports;
808 zfcp_fc_wka_port_init(&wka_ports->ms, FC_FID_MGMT_SERV, adapter);
809 zfcp_fc_wka_port_init(&wka_ports->ts, FC_FID_TIME_SERV, adapter);
810 zfcp_fc_wka_port_init(&wka_ports->ds, FC_FID_DIR_SERV, adapter);
811 zfcp_fc_wka_port_init(&wka_ports->as, FC_FID_ALIASES, adapter);
816 void zfcp_fc_gs_destroy(struct zfcp_adapter *adapter)