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)
137 zfcp_fc_wka_port_force_offline(&gs->ms);
138 zfcp_fc_wka_port_force_offline(&gs->ts);
139 zfcp_fc_wka_port_force_offline(&gs->ds);
140 zfcp_fc_wka_port_force_offline(&gs->as);
141 zfcp_fc_wka_port_force_offline(&gs->ks);
144 static void _zfcp_fc_incoming_rscn(struct zfcp_fsf_req *fsf_req, u32 range,
145 struct fcp_rscn_element *elem)
148 struct zfcp_port *port;
150 read_lock_irqsave(&zfcp_data.config_lock, flags);
151 list_for_each_entry(port, &fsf_req->adapter->port_list_head, list) {
152 if ((port->d_id & range) == (elem->nport_did & range))
153 zfcp_fc_test_link(port);
155 zfcp_erp_port_reopen(port,
156 ZFCP_STATUS_COMMON_ERP_FAILED,
160 read_unlock_irqrestore(&zfcp_data.config_lock, flags);
163 static void zfcp_fc_incoming_rscn(struct zfcp_fsf_req *fsf_req)
165 struct fsf_status_read_buffer *status_buffer = (void *)fsf_req->data;
166 struct fcp_rscn_head *fcp_rscn_head;
167 struct fcp_rscn_element *fcp_rscn_element;
172 fcp_rscn_head = (struct fcp_rscn_head *) status_buffer->payload.data;
173 fcp_rscn_element = (struct fcp_rscn_element *) fcp_rscn_head;
176 no_entries = fcp_rscn_head->payload_len /
177 sizeof(struct fcp_rscn_element);
179 for (i = 1; i < no_entries; i++) {
180 /* skip head and start with 1st element */
182 range_mask = rscn_range_mask[fcp_rscn_element->addr_format];
183 _zfcp_fc_incoming_rscn(fsf_req, range_mask, fcp_rscn_element);
185 schedule_work(&fsf_req->adapter->scan_work);
188 static void zfcp_fc_incoming_wwpn(struct zfcp_fsf_req *req, u64 wwpn)
190 struct zfcp_adapter *adapter = req->adapter;
191 struct zfcp_port *port;
194 read_lock_irqsave(&zfcp_data.config_lock, flags);
195 list_for_each_entry(port, &adapter->port_list_head, list)
196 if (port->wwpn == wwpn)
198 read_unlock_irqrestore(&zfcp_data.config_lock, flags);
200 if (port && (port->wwpn == wwpn))
201 zfcp_erp_port_forced_reopen(port, 0, "fciwwp1", req);
204 static void zfcp_fc_incoming_plogi(struct zfcp_fsf_req *req)
206 struct fsf_status_read_buffer *status_buffer =
207 (struct fsf_status_read_buffer *)req->data;
208 struct fsf_plogi *els_plogi =
209 (struct fsf_plogi *) status_buffer->payload.data;
211 zfcp_fc_incoming_wwpn(req, els_plogi->serv_param.wwpn);
214 static void zfcp_fc_incoming_logo(struct zfcp_fsf_req *req)
216 struct fsf_status_read_buffer *status_buffer =
217 (struct fsf_status_read_buffer *)req->data;
218 struct fcp_logo *els_logo =
219 (struct fcp_logo *) status_buffer->payload.data;
221 zfcp_fc_incoming_wwpn(req, els_logo->nport_wwpn);
225 * zfcp_fc_incoming_els - handle incoming ELS
226 * @fsf_req - request which contains incoming ELS
228 void zfcp_fc_incoming_els(struct zfcp_fsf_req *fsf_req)
230 struct fsf_status_read_buffer *status_buffer =
231 (struct fsf_status_read_buffer *) fsf_req->data;
232 unsigned int els_type = status_buffer->payload.data[0];
234 zfcp_dbf_san_incoming_els(fsf_req);
235 if (els_type == LS_PLOGI)
236 zfcp_fc_incoming_plogi(fsf_req);
237 else if (els_type == LS_LOGO)
238 zfcp_fc_incoming_logo(fsf_req);
239 else if (els_type == LS_RSCN)
240 zfcp_fc_incoming_rscn(fsf_req);
243 static void zfcp_fc_ns_handler(unsigned long data)
245 struct zfcp_fc_ns_handler_data *compl_rec =
246 (struct zfcp_fc_ns_handler_data *) data;
248 if (compl_rec->handler)
249 compl_rec->handler(compl_rec->handler_data);
251 complete(&compl_rec->done);
254 static void zfcp_fc_ns_gid_pn_eval(unsigned long data)
256 struct zfcp_gid_pn_data *gid_pn = (struct zfcp_gid_pn_data *) data;
257 struct zfcp_send_ct *ct = &gid_pn->ct;
258 struct ct_iu_gid_pn_req *ct_iu_req = sg_virt(ct->req);
259 struct ct_iu_gid_pn_resp *ct_iu_resp = sg_virt(ct->resp);
260 struct zfcp_port *port = gid_pn->port;
264 if (ct_iu_resp->header.cmd_rsp_code != ZFCP_CT_ACCEPT)
268 if (ct_iu_req->wwpn != port->wwpn)
270 /* looks like a valid d_id */
271 port->d_id = ct_iu_resp->d_id & ZFCP_DID_MASK;
274 static int zfcp_fc_ns_gid_pn_request(struct zfcp_port *port,
275 struct zfcp_gid_pn_data *gid_pn)
277 struct zfcp_adapter *adapter = port->adapter;
278 struct zfcp_fc_ns_handler_data compl_rec;
281 /* setup parameters for send generic command */
283 gid_pn->ct.wka_port = &adapter->gs->ds;
284 gid_pn->ct.handler = zfcp_fc_ns_handler;
285 gid_pn->ct.handler_data = (unsigned long) &compl_rec;
286 gid_pn->ct.req = &gid_pn->req;
287 gid_pn->ct.resp = &gid_pn->resp;
288 sg_init_one(&gid_pn->req, &gid_pn->ct_iu_req,
289 sizeof(struct ct_iu_gid_pn_req));
290 sg_init_one(&gid_pn->resp, &gid_pn->ct_iu_resp,
291 sizeof(struct ct_iu_gid_pn_resp));
293 /* setup nameserver request */
294 gid_pn->ct_iu_req.header.revision = ZFCP_CT_REVISION;
295 gid_pn->ct_iu_req.header.gs_type = ZFCP_CT_DIRECTORY_SERVICE;
296 gid_pn->ct_iu_req.header.gs_subtype = ZFCP_CT_NAME_SERVER;
297 gid_pn->ct_iu_req.header.options = ZFCP_CT_SYNCHRONOUS;
298 gid_pn->ct_iu_req.header.cmd_rsp_code = ZFCP_CT_GID_PN;
299 gid_pn->ct_iu_req.header.max_res_size = ZFCP_CT_SIZE_ONE_PAGE / 4;
300 gid_pn->ct_iu_req.wwpn = port->wwpn;
302 init_completion(&compl_rec.done);
303 compl_rec.handler = zfcp_fc_ns_gid_pn_eval;
304 compl_rec.handler_data = (unsigned long) gid_pn;
305 ret = zfcp_fsf_send_ct(&gid_pn->ct, adapter->pool.gid_pn_req);
307 wait_for_completion(&compl_rec.done);
312 * zfcp_fc_ns_gid_pn_request - initiate GID_PN nameserver request
313 * @port: port where GID_PN request is needed
314 * return: -ENOMEM on error, 0 otherwise
316 static int zfcp_fc_ns_gid_pn(struct zfcp_port *port)
319 struct zfcp_gid_pn_data *gid_pn;
320 struct zfcp_adapter *adapter = port->adapter;
322 gid_pn = mempool_alloc(adapter->pool.gid_pn_data, GFP_ATOMIC);
326 memset(gid_pn, 0, sizeof(*gid_pn));
328 ret = zfcp_fc_wka_port_get(&adapter->gs->ds);
332 ret = zfcp_fc_ns_gid_pn_request(port, gid_pn);
334 zfcp_fc_wka_port_put(&adapter->gs->ds);
336 mempool_free(gid_pn, adapter->pool.gid_pn_data);
340 void zfcp_fc_port_did_lookup(struct work_struct *work)
343 struct zfcp_port *port = container_of(work, struct zfcp_port,
346 ret = zfcp_fc_ns_gid_pn(port);
348 /* could not issue gid_pn for some reason */
349 zfcp_erp_adapter_reopen(port->adapter, 0, "fcgpn_1", NULL);
354 zfcp_erp_port_failed(port, "fcgpn_2", NULL);
358 zfcp_erp_port_reopen(port, 0, "fcgpn_3", NULL);
364 * zfcp_fc_trigger_did_lookup - trigger the d_id lookup using a GID_PN request
365 * @port: The zfcp_port to lookup the d_id for.
367 void zfcp_fc_trigger_did_lookup(struct zfcp_port *port)
370 if (!queue_work(port->adapter->work_queue, &port->gid_pn_work))
375 * zfcp_fc_plogi_evaluate - evaluate PLOGI playload
376 * @port: zfcp_port structure
377 * @plogi: plogi payload
379 * Evaluate PLOGI playload and copy important fields into zfcp_port structure
381 void zfcp_fc_plogi_evaluate(struct zfcp_port *port, struct fsf_plogi *plogi)
383 port->maxframe_size = plogi->serv_param.common_serv_param[7] |
384 ((plogi->serv_param.common_serv_param[6] & 0x0F) << 8);
385 if (plogi->serv_param.class1_serv_param[0] & 0x80)
386 port->supported_classes |= FC_COS_CLASS1;
387 if (plogi->serv_param.class2_serv_param[0] & 0x80)
388 port->supported_classes |= FC_COS_CLASS2;
389 if (plogi->serv_param.class3_serv_param[0] & 0x80)
390 port->supported_classes |= FC_COS_CLASS3;
391 if (plogi->serv_param.class4_serv_param[0] & 0x80)
392 port->supported_classes |= FC_COS_CLASS4;
395 struct zfcp_els_adisc {
396 struct zfcp_send_els els;
397 struct scatterlist req;
398 struct scatterlist resp;
399 struct zfcp_ls_adisc ls_adisc;
400 struct zfcp_ls_adisc ls_adisc_acc;
403 static void zfcp_fc_adisc_handler(unsigned long data)
405 struct zfcp_els_adisc *adisc = (struct zfcp_els_adisc *) data;
406 struct zfcp_port *port = adisc->els.port;
407 struct zfcp_ls_adisc *ls_adisc = &adisc->ls_adisc_acc;
409 if (adisc->els.status) {
410 /* request rejected or timed out */
411 zfcp_erp_port_forced_reopen(port, ZFCP_STATUS_COMMON_ERP_FAILED,
417 port->wwnn = ls_adisc->wwnn;
419 if ((port->wwpn != ls_adisc->wwpn) ||
420 !(atomic_read(&port->status) & ZFCP_STATUS_COMMON_OPEN)) {
421 zfcp_erp_port_reopen(port, ZFCP_STATUS_COMMON_ERP_FAILED,
426 /* port is good, unblock rport without going through erp */
427 zfcp_scsi_schedule_rport_register(port);
429 atomic_clear_mask(ZFCP_STATUS_PORT_LINK_TEST, &port->status);
434 static int zfcp_fc_adisc(struct zfcp_port *port)
436 struct zfcp_els_adisc *adisc;
437 struct zfcp_adapter *adapter = port->adapter;
439 adisc = kzalloc(sizeof(struct zfcp_els_adisc), GFP_ATOMIC);
443 adisc->els.req = &adisc->req;
444 adisc->els.resp = &adisc->resp;
445 sg_init_one(adisc->els.req, &adisc->ls_adisc,
446 sizeof(struct zfcp_ls_adisc));
447 sg_init_one(adisc->els.resp, &adisc->ls_adisc_acc,
448 sizeof(struct zfcp_ls_adisc));
450 adisc->els.adapter = adapter;
451 adisc->els.port = port;
452 adisc->els.d_id = port->d_id;
453 adisc->els.handler = zfcp_fc_adisc_handler;
454 adisc->els.handler_data = (unsigned long) adisc;
455 adisc->els.ls_code = adisc->ls_adisc.code = ZFCP_LS_ADISC;
457 /* acc. to FC-FS, hard_nport_id in ADISC should not be set for ports
458 without FC-AL-2 capability, so we don't set it */
459 adisc->ls_adisc.wwpn = fc_host_port_name(adapter->scsi_host);
460 adisc->ls_adisc.wwnn = fc_host_node_name(adapter->scsi_host);
461 adisc->ls_adisc.nport_id = fc_host_port_id(adapter->scsi_host);
463 return zfcp_fsf_send_els(&adisc->els);
466 void zfcp_fc_link_test_work(struct work_struct *work)
468 struct zfcp_port *port =
469 container_of(work, struct zfcp_port, test_link_work);
473 port->rport_task = RPORT_DEL;
474 zfcp_scsi_rport_work(&port->rport_work);
476 /* only issue one test command at one time per port */
477 if (atomic_read(&port->status) & ZFCP_STATUS_PORT_LINK_TEST)
480 atomic_set_mask(ZFCP_STATUS_PORT_LINK_TEST, &port->status);
482 retval = zfcp_fc_adisc(port);
486 /* send of ADISC was not possible */
487 atomic_clear_mask(ZFCP_STATUS_PORT_LINK_TEST, &port->status);
488 zfcp_erp_port_forced_reopen(port, 0, "fcltwk1", NULL);
495 * zfcp_fc_test_link - lightweight link test procedure
496 * @port: port to be tested
498 * Test status of a link to a remote port using the ELS command ADISC.
499 * If there is a problem with the remote port, error recovery steps
502 void zfcp_fc_test_link(struct zfcp_port *port)
505 if (!queue_work(port->adapter->work_queue, &port->test_link_work))
509 static void zfcp_free_sg_env(struct zfcp_gpn_ft *gpn_ft, int buf_num)
511 struct scatterlist *sg = &gpn_ft->sg_req;
513 kmem_cache_free(zfcp_data.gpn_ft_cache, sg_virt(sg));
514 zfcp_sg_free_table(gpn_ft->sg_resp, buf_num);
519 static struct zfcp_gpn_ft *zfcp_alloc_sg_env(int buf_num)
521 struct zfcp_gpn_ft *gpn_ft;
522 struct ct_iu_gpn_ft_req *req;
524 gpn_ft = kzalloc(sizeof(*gpn_ft), GFP_KERNEL);
528 req = kmem_cache_alloc(zfcp_data.gpn_ft_cache, GFP_KERNEL);
534 sg_init_one(&gpn_ft->sg_req, req, sizeof(*req));
536 if (zfcp_sg_setup_table(gpn_ft->sg_resp, buf_num)) {
537 zfcp_free_sg_env(gpn_ft, buf_num);
545 static int zfcp_fc_send_gpn_ft(struct zfcp_gpn_ft *gpn_ft,
546 struct zfcp_adapter *adapter, int max_bytes)
548 struct zfcp_send_ct *ct = &gpn_ft->ct;
549 struct ct_iu_gpn_ft_req *req = sg_virt(&gpn_ft->sg_req);
550 struct zfcp_fc_ns_handler_data compl_rec;
553 /* prepare CT IU for GPN_FT */
554 req->header.revision = ZFCP_CT_REVISION;
555 req->header.gs_type = ZFCP_CT_DIRECTORY_SERVICE;
556 req->header.gs_subtype = ZFCP_CT_NAME_SERVER;
557 req->header.options = ZFCP_CT_SYNCHRONOUS;
558 req->header.cmd_rsp_code = ZFCP_CT_GPN_FT;
559 req->header.max_res_size = max_bytes / 4;
561 req->domain_id_scope = 0;
562 req->area_id_scope = 0;
563 req->fc4_type = ZFCP_CT_SCSI_FCP;
565 /* prepare zfcp_send_ct */
566 ct->wka_port = &adapter->gs->ds;
567 ct->handler = zfcp_fc_ns_handler;
568 ct->handler_data = (unsigned long)&compl_rec;
569 ct->req = &gpn_ft->sg_req;
570 ct->resp = gpn_ft->sg_resp;
572 init_completion(&compl_rec.done);
573 compl_rec.handler = NULL;
574 ret = zfcp_fsf_send_ct(ct, NULL);
576 wait_for_completion(&compl_rec.done);
580 static void zfcp_fc_validate_port(struct zfcp_port *port)
582 struct zfcp_adapter *adapter = port->adapter;
584 if (!(atomic_read(&port->status) & ZFCP_STATUS_COMMON_NOESC))
587 atomic_clear_mask(ZFCP_STATUS_COMMON_NOESC, &port->status);
589 if ((port->supported_classes != 0) ||
590 !list_empty(&port->unit_list_head)) {
594 zfcp_erp_port_shutdown(port, 0, "fcpval1", NULL);
595 zfcp_erp_wait(adapter);
597 zfcp_port_dequeue(port);
600 static int zfcp_fc_eval_gpn_ft(struct zfcp_gpn_ft *gpn_ft, int max_entries)
602 struct zfcp_send_ct *ct = &gpn_ft->ct;
603 struct scatterlist *sg = gpn_ft->sg_resp;
604 struct ct_hdr *hdr = sg_virt(sg);
605 struct gpn_ft_resp_acc *acc = sg_virt(sg);
606 struct zfcp_adapter *adapter = ct->wka_port->adapter;
607 struct zfcp_port *port, *tmp;
609 int ret = 0, x, last = 0;
614 if (hdr->cmd_rsp_code != ZFCP_CT_ACCEPT) {
615 if (hdr->reason_code == ZFCP_CT_UNABLE_TO_PERFORM_CMD)
616 return -EAGAIN; /* might be a temporary condition */
620 if (hdr->max_res_size) {
621 dev_warn(&adapter->ccw_device->dev,
622 "The name server reported %d words residual data\n",
627 mutex_lock(&zfcp_data.config_mutex);
629 /* first entry is the header */
630 for (x = 1; x < max_entries && !last; x++) {
631 if (x % (ZFCP_GPN_FT_ENTRIES + 1))
636 last = acc->control & 0x80;
637 d_id = acc->port_id[0] << 16 | acc->port_id[1] << 8 |
640 /* don't attach ports with a well known address */
641 if ((d_id & ZFCP_DID_WKA) == ZFCP_DID_WKA)
643 /* skip the adapter's port and known remote ports */
644 if (acc->wwpn == fc_host_port_name(adapter->scsi_host))
646 port = zfcp_get_port_by_wwpn(adapter, acc->wwpn);
650 port = zfcp_port_enqueue(adapter, acc->wwpn,
651 ZFCP_STATUS_COMMON_NOESC, d_id);
655 zfcp_erp_port_reopen(port, 0, "fcegpf1", NULL);
658 zfcp_erp_wait(adapter);
659 list_for_each_entry_safe(port, tmp, &adapter->port_list_head, list)
660 zfcp_fc_validate_port(port);
661 mutex_unlock(&zfcp_data.config_mutex);
666 * zfcp_fc_scan_ports - scan remote ports and attach new ports
667 * @adapter: pointer to struct zfcp_adapter
669 int zfcp_fc_scan_ports(struct zfcp_adapter *adapter)
672 struct zfcp_gpn_ft *gpn_ft;
673 int chain, max_entries, buf_num, max_bytes;
675 chain = adapter->adapter_features & FSF_FEATURE_ELS_CT_CHAINED_SBALS;
676 buf_num = chain ? ZFCP_GPN_FT_BUFFERS : 1;
677 max_entries = chain ? ZFCP_GPN_FT_MAX_ENTRIES : ZFCP_GPN_FT_ENTRIES;
678 max_bytes = chain ? ZFCP_GPN_FT_MAX_SIZE : ZFCP_CT_SIZE_ONE_PAGE;
680 if (fc_host_port_type(adapter->scsi_host) != FC_PORTTYPE_NPORT &&
681 fc_host_port_type(adapter->scsi_host) != FC_PORTTYPE_NPIV)
684 ret = zfcp_fc_wka_port_get(&adapter->gs->ds);
688 gpn_ft = zfcp_alloc_sg_env(buf_num);
694 for (i = 0; i < 3; i++) {
695 ret = zfcp_fc_send_gpn_ft(gpn_ft, adapter, max_bytes);
697 ret = zfcp_fc_eval_gpn_ft(gpn_ft, max_entries);
704 zfcp_free_sg_env(gpn_ft, buf_num);
706 zfcp_fc_wka_port_put(&adapter->gs->ds);
711 void _zfcp_fc_scan_ports_later(struct work_struct *work)
713 zfcp_fc_scan_ports(container_of(work, struct zfcp_adapter, scan_work));
716 struct zfcp_els_fc_job {
717 struct zfcp_send_els els;
718 struct fc_bsg_job *job;
721 static void zfcp_fc_generic_els_handler(unsigned long data)
723 struct zfcp_els_fc_job *els_fc_job = (struct zfcp_els_fc_job *) data;
724 struct fc_bsg_job *job = els_fc_job->job;
725 struct fc_bsg_reply *reply = job->reply;
727 if (els_fc_job->els.status) {
728 /* request rejected or timed out */
729 reply->reply_data.ctels_reply.status = FC_CTELS_STATUS_REJECT;
733 reply->reply_data.ctels_reply.status = FC_CTELS_STATUS_OK;
734 reply->reply_payload_rcv_len = job->reply_payload.payload_len;
737 job->state_flags = FC_RQST_STATE_DONE;
742 int zfcp_fc_execute_els_fc_job(struct fc_bsg_job *job)
744 struct zfcp_els_fc_job *els_fc_job;
745 struct fc_rport *rport = job->rport;
746 struct Scsi_Host *shost;
747 struct zfcp_adapter *adapter;
748 struct zfcp_port *port;
751 shost = rport ? rport_to_shost(rport) : job->shost;
752 adapter = (struct zfcp_adapter *)shost->hostdata[0];
754 if (!(atomic_read(&adapter->status) & ZFCP_STATUS_COMMON_OPEN))
757 els_fc_job = kzalloc(sizeof(struct zfcp_els_fc_job), GFP_KERNEL);
761 els_fc_job->els.adapter = adapter;
763 read_lock_irq(&zfcp_data.config_lock);
764 port = zfcp_get_port_by_wwpn(adapter, rport->port_name);
766 els_fc_job->els.d_id = port->d_id;
767 read_unlock_irq(&zfcp_data.config_lock);
773 port_did = job->request->rqst_data.h_els.port_id;
774 els_fc_job->els.d_id = (port_did[0] << 16) +
775 (port_did[1] << 8) + port_did[2];
778 els_fc_job->els.req = job->request_payload.sg_list;
779 els_fc_job->els.resp = job->reply_payload.sg_list;
780 els_fc_job->els.handler = zfcp_fc_generic_els_handler;
781 els_fc_job->els.handler_data = (unsigned long) els_fc_job;
782 els_fc_job->job = job;
784 return zfcp_fsf_send_els(&els_fc_job->els);
787 struct zfcp_ct_fc_job {
788 struct zfcp_send_ct ct;
789 struct fc_bsg_job *job;
792 static void zfcp_fc_generic_ct_handler(unsigned long data)
794 struct zfcp_ct_fc_job *ct_fc_job = (struct zfcp_ct_fc_job *) data;
795 struct fc_bsg_job *job = ct_fc_job->job;
797 job->reply->reply_data.ctels_reply.status = ct_fc_job->ct.status ?
798 FC_CTELS_STATUS_REJECT : FC_CTELS_STATUS_OK;
799 job->reply->reply_payload_rcv_len = job->reply_payload.payload_len;
800 job->state_flags = FC_RQST_STATE_DONE;
803 zfcp_fc_wka_port_put(ct_fc_job->ct.wka_port);
808 int zfcp_fc_execute_ct_fc_job(struct fc_bsg_job *job)
812 struct fc_rport *rport = job->rport;
813 struct Scsi_Host *shost;
814 struct zfcp_adapter *adapter;
815 struct zfcp_ct_fc_job *ct_fc_job;
818 shost = rport ? rport_to_shost(rport) : job->shost;
820 adapter = (struct zfcp_adapter *)shost->hostdata[0];
821 if (!(atomic_read(&adapter->status) & ZFCP_STATUS_COMMON_OPEN))
824 ct_fc_job = kzalloc(sizeof(struct zfcp_ct_fc_job), GFP_KERNEL);
828 preamble_word1 = job->request->rqst_data.r_ct.preamble_word1;
829 gs_type = (preamble_word1 & 0xff000000) >> 24;
833 ct_fc_job->ct.wka_port = &adapter->gs->as;
836 ct_fc_job->ct.wka_port = &adapter->gs->ms;
839 ct_fc_job->ct.wka_port = &adapter->gs->ts;
842 ct_fc_job->ct.wka_port = &adapter->gs->ds;
846 return -EINVAL; /* no such service */
849 ret = zfcp_fc_wka_port_get(ct_fc_job->ct.wka_port);
855 ct_fc_job->ct.req = job->request_payload.sg_list;
856 ct_fc_job->ct.resp = job->reply_payload.sg_list;
857 ct_fc_job->ct.handler = zfcp_fc_generic_ct_handler;
858 ct_fc_job->ct.handler_data = (unsigned long) ct_fc_job;
859 ct_fc_job->ct.completion = NULL;
860 ct_fc_job->job = job;
862 ret = zfcp_fsf_send_ct(&ct_fc_job->ct, NULL);
865 zfcp_fc_wka_port_put(ct_fc_job->ct.wka_port);
870 int zfcp_fc_gs_setup(struct zfcp_adapter *adapter)
872 struct zfcp_wka_ports *wka_ports;
874 wka_ports = kzalloc(sizeof(struct zfcp_wka_ports), GFP_KERNEL);
878 adapter->gs = wka_ports;
879 zfcp_fc_wka_port_init(&wka_ports->ms, FC_FID_MGMT_SERV, adapter);
880 zfcp_fc_wka_port_init(&wka_ports->ts, FC_FID_TIME_SERV, adapter);
881 zfcp_fc_wka_port_init(&wka_ports->ds, FC_FID_DIR_SERV, adapter);
882 zfcp_fc_wka_port_init(&wka_ports->as, FC_FID_ALIASES, adapter);
883 zfcp_fc_wka_port_init(&wka_ports->ks, FC_FID_SEC_KEY, adapter);
888 void zfcp_fc_gs_destroy(struct zfcp_adapter *adapter)