Commit | Line | Data |
---|---|---|
24073b47 CS |
1 | /* |
2 | * zfcp device driver | |
3 | * | |
4 | * Fibre Channel related functions for the zfcp device driver. | |
5 | * | |
a53c8fab | 6 | * Copyright IBM Corp. 2008, 2010 |
24073b47 CS |
7 | */ |
8 | ||
ecf39d42 CS |
9 | #define KMSG_COMPONENT "zfcp" |
10 | #define pr_fmt(fmt) KMSG_COMPONENT ": " fmt | |
11 | ||
9d05ce2c | 12 | #include <linux/types.h> |
5a0e3ad6 | 13 | #include <linux/slab.h> |
038d9446 | 14 | #include <linux/utsname.h> |
9d05ce2c CS |
15 | #include <scsi/fc/fc_els.h> |
16 | #include <scsi/libfc.h> | |
24073b47 | 17 | #include "zfcp_ext.h" |
9d05ce2c | 18 | #include "zfcp_fc.h" |
24073b47 | 19 | |
087897e3 CS |
20 | struct kmem_cache *zfcp_fc_req_cache; |
21 | ||
9d05ce2c CS |
22 | static 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, | |
e0d7fcb5 CS |
27 | }; |
28 | ||
2d1e547f SS |
29 | /** |
30 | * zfcp_fc_post_event - post event to userspace via fc_transport | |
31 | * @work: work struct with enqueued events | |
32 | */ | |
33 | void zfcp_fc_post_event(struct work_struct *work) | |
34 | { | |
35 | struct zfcp_fc_event *event = NULL, *tmp = NULL; | |
36 | LIST_HEAD(tmp_lh); | |
37 | struct zfcp_fc_events *events = container_of(work, | |
38 | struct zfcp_fc_events, work); | |
39 | struct zfcp_adapter *adapter = container_of(events, struct zfcp_adapter, | |
40 | events); | |
41 | ||
42 | spin_lock_bh(&events->list_lock); | |
43 | list_splice_init(&events->list, &tmp_lh); | |
44 | spin_unlock_bh(&events->list_lock); | |
45 | ||
46 | list_for_each_entry_safe(event, tmp, &tmp_lh, list) { | |
47 | fc_host_post_event(adapter->scsi_host, fc_get_event_number(), | |
48 | event->code, event->data); | |
49 | list_del(&event->list); | |
50 | kfree(event); | |
51 | } | |
52 | ||
53 | } | |
54 | ||
55 | /** | |
56 | * zfcp_fc_enqueue_event - safely enqueue FC HBA API event from irq context | |
57 | * @adapter: The adapter where to enqueue the event | |
58 | * @event_code: The event code (as defined in fc_host_event_code in | |
59 | * scsi_transport_fc.h) | |
60 | * @event_data: The event data (e.g. n_port page in case of els) | |
61 | */ | |
62 | void zfcp_fc_enqueue_event(struct zfcp_adapter *adapter, | |
63 | enum fc_host_event_code event_code, u32 event_data) | |
64 | { | |
65 | struct zfcp_fc_event *event; | |
66 | ||
67 | event = kmalloc(sizeof(struct zfcp_fc_event), GFP_ATOMIC); | |
68 | if (!event) | |
69 | return; | |
70 | ||
71 | event->code = event_code; | |
72 | event->data = event_data; | |
73 | ||
74 | spin_lock(&adapter->events.list_lock); | |
75 | list_add_tail(&event->list, &adapter->events.list); | |
76 | spin_unlock(&adapter->events.list_lock); | |
77 | ||
78 | queue_work(adapter->work_queue, &adapter->events.work); | |
79 | } | |
80 | ||
bd0072ec | 81 | static int zfcp_fc_wka_port_get(struct zfcp_fc_wka_port *wka_port) |
5ab944f9 SS |
82 | { |
83 | if (mutex_lock_interruptible(&wka_port->mutex)) | |
84 | return -ERESTARTSYS; | |
85 | ||
bd0072ec CS |
86 | if (wka_port->status == ZFCP_FC_WKA_PORT_OFFLINE || |
87 | wka_port->status == ZFCP_FC_WKA_PORT_CLOSING) { | |
88 | wka_port->status = ZFCP_FC_WKA_PORT_OPENING; | |
5ab944f9 | 89 | if (zfcp_fsf_open_wka_port(wka_port)) |
bd0072ec | 90 | wka_port->status = ZFCP_FC_WKA_PORT_OFFLINE; |
5ab944f9 SS |
91 | } |
92 | ||
93 | mutex_unlock(&wka_port->mutex); | |
94 | ||
27f492cc | 95 | wait_event(wka_port->completion_wq, |
bd0072ec CS |
96 | wka_port->status == ZFCP_FC_WKA_PORT_ONLINE || |
97 | wka_port->status == ZFCP_FC_WKA_PORT_OFFLINE); | |
5ab944f9 | 98 | |
bd0072ec | 99 | if (wka_port->status == ZFCP_FC_WKA_PORT_ONLINE) { |
5ab944f9 SS |
100 | atomic_inc(&wka_port->refcount); |
101 | return 0; | |
102 | } | |
103 | return -EIO; | |
104 | } | |
105 | ||
6f53a2d2 | 106 | static void zfcp_fc_wka_port_offline(struct work_struct *work) |
5ab944f9 | 107 | { |
bf6aede7 | 108 | struct delayed_work *dw = to_delayed_work(work); |
bd0072ec CS |
109 | struct zfcp_fc_wka_port *wka_port = |
110 | container_of(dw, struct zfcp_fc_wka_port, work); | |
5ab944f9 | 111 | |
5ab944f9 SS |
112 | mutex_lock(&wka_port->mutex); |
113 | if ((atomic_read(&wka_port->refcount) != 0) || | |
bd0072ec | 114 | (wka_port->status != ZFCP_FC_WKA_PORT_ONLINE)) |
5ab944f9 SS |
115 | goto out; |
116 | ||
bd0072ec | 117 | wka_port->status = ZFCP_FC_WKA_PORT_CLOSING; |
5ab944f9 | 118 | if (zfcp_fsf_close_wka_port(wka_port)) { |
bd0072ec | 119 | wka_port->status = ZFCP_FC_WKA_PORT_OFFLINE; |
5ab944f9 SS |
120 | wake_up(&wka_port->completion_wq); |
121 | } | |
122 | out: | |
123 | mutex_unlock(&wka_port->mutex); | |
124 | } | |
125 | ||
bd0072ec | 126 | static void zfcp_fc_wka_port_put(struct zfcp_fc_wka_port *wka_port) |
5ab944f9 SS |
127 | { |
128 | if (atomic_dec_return(&wka_port->refcount) != 0) | |
129 | return; | |
19af5cdb | 130 | /* wait 10 milliseconds, other reqs might pop in */ |
5ab944f9 SS |
131 | schedule_delayed_work(&wka_port->work, HZ / 100); |
132 | } | |
133 | ||
bd0072ec | 134 | static void zfcp_fc_wka_port_init(struct zfcp_fc_wka_port *wka_port, u32 d_id, |
9d544f2b | 135 | struct zfcp_adapter *adapter) |
5ab944f9 | 136 | { |
5ab944f9 SS |
137 | init_waitqueue_head(&wka_port->completion_wq); |
138 | ||
139 | wka_port->adapter = adapter; | |
9d544f2b | 140 | wka_port->d_id = d_id; |
5ab944f9 | 141 | |
bd0072ec | 142 | wka_port->status = ZFCP_FC_WKA_PORT_OFFLINE; |
5ab944f9 SS |
143 | atomic_set(&wka_port->refcount, 0); |
144 | mutex_init(&wka_port->mutex); | |
6f53a2d2 | 145 | INIT_DELAYED_WORK(&wka_port->work, zfcp_fc_wka_port_offline); |
5ab944f9 SS |
146 | } |
147 | ||
bd0072ec | 148 | static void zfcp_fc_wka_port_force_offline(struct zfcp_fc_wka_port *wka) |
828bc121 SS |
149 | { |
150 | cancel_delayed_work_sync(&wka->work); | |
151 | mutex_lock(&wka->mutex); | |
bd0072ec | 152 | wka->status = ZFCP_FC_WKA_PORT_OFFLINE; |
828bc121 SS |
153 | mutex_unlock(&wka->mutex); |
154 | } | |
155 | ||
bd0072ec | 156 | void zfcp_fc_wka_ports_force_offline(struct zfcp_fc_wka_ports *gs) |
55c770fa | 157 | { |
f3450c7b SS |
158 | if (!gs) |
159 | return; | |
55c770fa CS |
160 | zfcp_fc_wka_port_force_offline(&gs->ms); |
161 | zfcp_fc_wka_port_force_offline(&gs->ts); | |
162 | zfcp_fc_wka_port_force_offline(&gs->ds); | |
163 | zfcp_fc_wka_port_force_offline(&gs->as); | |
55c770fa CS |
164 | } |
165 | ||
24073b47 | 166 | static void _zfcp_fc_incoming_rscn(struct zfcp_fsf_req *fsf_req, u32 range, |
9d05ce2c | 167 | struct fc_els_rscn_page *page) |
24073b47 CS |
168 | { |
169 | unsigned long flags; | |
ecf0c772 | 170 | struct zfcp_adapter *adapter = fsf_req->adapter; |
24073b47 CS |
171 | struct zfcp_port *port; |
172 | ||
ecf0c772 SS |
173 | read_lock_irqsave(&adapter->port_list_lock, flags); |
174 | list_for_each_entry(port, &adapter->port_list, list) { | |
9d05ce2c | 175 | if ((port->d_id & range) == (ntoh24(page->rscn_fid) & range)) |
6f53a2d2 | 176 | zfcp_fc_test_link(port); |
ea460a81 SS |
177 | if (!port->d_id) |
178 | zfcp_erp_port_reopen(port, | |
179 | ZFCP_STATUS_COMMON_ERP_FAILED, | |
ea4a3a6a | 180 | "fcrscn1"); |
ea460a81 | 181 | } |
ecf0c772 | 182 | read_unlock_irqrestore(&adapter->port_list_lock, flags); |
24073b47 CS |
183 | } |
184 | ||
185 | static void zfcp_fc_incoming_rscn(struct zfcp_fsf_req *fsf_req) | |
186 | { | |
187 | struct fsf_status_read_buffer *status_buffer = (void *)fsf_req->data; | |
9d05ce2c CS |
188 | struct fc_els_rscn *head; |
189 | struct fc_els_rscn_page *page; | |
24073b47 CS |
190 | u16 i; |
191 | u16 no_entries; | |
9d05ce2c | 192 | unsigned int afmt; |
24073b47 | 193 | |
9d05ce2c CS |
194 | head = (struct fc_els_rscn *) status_buffer->payload.data; |
195 | page = (struct fc_els_rscn_page *) head; | |
24073b47 CS |
196 | |
197 | /* see FC-FS */ | |
9d05ce2c | 198 | no_entries = head->rscn_plen / sizeof(struct fc_els_rscn_page); |
24073b47 CS |
199 | |
200 | for (i = 1; i < no_entries; i++) { | |
201 | /* skip head and start with 1st element */ | |
9d05ce2c CS |
202 | page++; |
203 | afmt = page->rscn_page_flags & ELS_RSCN_ADDR_FMT_MASK; | |
204 | _zfcp_fc_incoming_rscn(fsf_req, zfcp_fc_rscn_range_mask[afmt], | |
205 | page); | |
2d1e547f SS |
206 | zfcp_fc_enqueue_event(fsf_req->adapter, FCH_EVT_RSCN, |
207 | *(u32 *)page); | |
24073b47 | 208 | } |
9eae07ef | 209 | queue_work(fsf_req->adapter->work_queue, &fsf_req->adapter->scan_work); |
24073b47 CS |
210 | } |
211 | ||
7ba58c9c | 212 | static void zfcp_fc_incoming_wwpn(struct zfcp_fsf_req *req, u64 wwpn) |
24073b47 | 213 | { |
ecf0c772 | 214 | unsigned long flags; |
24073b47 CS |
215 | struct zfcp_adapter *adapter = req->adapter; |
216 | struct zfcp_port *port; | |
24073b47 | 217 | |
ecf0c772 SS |
218 | read_lock_irqsave(&adapter->port_list_lock, flags); |
219 | list_for_each_entry(port, &adapter->port_list, list) | |
220 | if (port->wwpn == wwpn) { | |
ea4a3a6a | 221 | zfcp_erp_port_forced_reopen(port, 0, "fciwwp1"); |
24073b47 | 222 | break; |
ecf0c772 SS |
223 | } |
224 | read_unlock_irqrestore(&adapter->port_list_lock, flags); | |
24073b47 CS |
225 | } |
226 | ||
227 | static void zfcp_fc_incoming_plogi(struct zfcp_fsf_req *req) | |
228 | { | |
9d05ce2c CS |
229 | struct fsf_status_read_buffer *status_buffer; |
230 | struct fc_els_flogi *plogi; | |
24073b47 | 231 | |
9d05ce2c CS |
232 | status_buffer = (struct fsf_status_read_buffer *) req->data; |
233 | plogi = (struct fc_els_flogi *) status_buffer->payload.data; | |
234 | zfcp_fc_incoming_wwpn(req, plogi->fl_wwpn); | |
24073b47 CS |
235 | } |
236 | ||
237 | static void zfcp_fc_incoming_logo(struct zfcp_fsf_req *req) | |
238 | { | |
239 | struct fsf_status_read_buffer *status_buffer = | |
240 | (struct fsf_status_read_buffer *)req->data; | |
9d05ce2c CS |
241 | struct fc_els_logo *logo = |
242 | (struct fc_els_logo *) status_buffer->payload.data; | |
24073b47 | 243 | |
9d05ce2c | 244 | zfcp_fc_incoming_wwpn(req, logo->fl_n_port_wwn); |
24073b47 CS |
245 | } |
246 | ||
247 | /** | |
248 | * zfcp_fc_incoming_els - handle incoming ELS | |
249 | * @fsf_req - request which contains incoming ELS | |
250 | */ | |
251 | void zfcp_fc_incoming_els(struct zfcp_fsf_req *fsf_req) | |
252 | { | |
253 | struct fsf_status_read_buffer *status_buffer = | |
254 | (struct fsf_status_read_buffer *) fsf_req->data; | |
c41f8cbd | 255 | unsigned int els_type = status_buffer->payload.data[0]; |
24073b47 | 256 | |
2c55b750 | 257 | zfcp_dbf_san_in_els("fciels1", fsf_req); |
9d05ce2c | 258 | if (els_type == ELS_PLOGI) |
24073b47 | 259 | zfcp_fc_incoming_plogi(fsf_req); |
9d05ce2c | 260 | else if (els_type == ELS_LOGO) |
24073b47 | 261 | zfcp_fc_incoming_logo(fsf_req); |
9d05ce2c | 262 | else if (els_type == ELS_RSCN) |
24073b47 CS |
263 | zfcp_fc_incoming_rscn(fsf_req); |
264 | } | |
265 | ||
fcf7e614 | 266 | static void zfcp_fc_ns_gid_pn_eval(struct zfcp_fc_req *fc_req) |
24073b47 | 267 | { |
fcf7e614 CS |
268 | struct zfcp_fsf_ct_els *ct_els = &fc_req->ct_els; |
269 | struct zfcp_fc_gid_pn_rsp *gid_pn_rsp = &fc_req->u.gid_pn.rsp; | |
24073b47 | 270 | |
fcf7e614 | 271 | if (ct_els->status) |
5ab944f9 | 272 | return; |
fcf7e614 | 273 | if (gid_pn_rsp->ct_hdr.ct_cmd != FC_FS_ACC) |
5ab944f9 | 274 | return; |
a5b11dda | 275 | |
24073b47 | 276 | /* looks like a valid d_id */ |
fcf7e614 | 277 | ct_els->port->d_id = ntoh24(gid_pn_rsp->gid_pn.fp_fid); |
24073b47 CS |
278 | } |
279 | ||
7c7dc196 CS |
280 | static void zfcp_fc_complete(void *data) |
281 | { | |
282 | complete(data); | |
283 | } | |
284 | ||
fcf7e614 CS |
285 | static void zfcp_fc_ct_ns_init(struct fc_ct_hdr *ct_hdr, u16 cmd, u16 mr_size) |
286 | { | |
287 | ct_hdr->ct_rev = FC_CT_REV; | |
288 | ct_hdr->ct_fs_type = FC_FST_DIR; | |
289 | ct_hdr->ct_fs_subtype = FC_NS_SUBTYPE; | |
290 | ct_hdr->ct_cmd = cmd; | |
291 | ct_hdr->ct_mr_size = mr_size / 4; | |
292 | } | |
293 | ||
799b76d0 | 294 | static int zfcp_fc_ns_gid_pn_request(struct zfcp_port *port, |
fcf7e614 | 295 | struct zfcp_fc_req *fc_req) |
24073b47 | 296 | { |
799b76d0 | 297 | struct zfcp_adapter *adapter = port->adapter; |
7c7dc196 | 298 | DECLARE_COMPLETION_ONSTACK(completion); |
fcf7e614 CS |
299 | struct zfcp_fc_gid_pn_req *gid_pn_req = &fc_req->u.gid_pn.req; |
300 | struct zfcp_fc_gid_pn_rsp *gid_pn_rsp = &fc_req->u.gid_pn.rsp; | |
5ab944f9 | 301 | int ret; |
24073b47 CS |
302 | |
303 | /* setup parameters for send generic command */ | |
fcf7e614 CS |
304 | fc_req->ct_els.port = port; |
305 | fc_req->ct_els.handler = zfcp_fc_complete; | |
306 | fc_req->ct_els.handler_data = &completion; | |
307 | fc_req->ct_els.req = &fc_req->sg_req; | |
308 | fc_req->ct_els.resp = &fc_req->sg_rsp; | |
309 | sg_init_one(&fc_req->sg_req, gid_pn_req, sizeof(*gid_pn_req)); | |
310 | sg_init_one(&fc_req->sg_rsp, gid_pn_rsp, sizeof(*gid_pn_rsp)); | |
311 | ||
312 | zfcp_fc_ct_ns_init(&gid_pn_req->ct_hdr, | |
313 | FC_NS_GID_PN, ZFCP_FC_CT_SIZE_PAGE); | |
314 | gid_pn_req->gid_pn.fn_wwpn = port->wwpn; | |
315 | ||
316 | ret = zfcp_fsf_send_ct(&adapter->gs->ds, &fc_req->ct_els, | |
51375ee8 SS |
317 | adapter->pool.gid_pn_req, |
318 | ZFCP_FC_CTELS_TMO); | |
7c7dc196 CS |
319 | if (!ret) { |
320 | wait_for_completion(&completion); | |
fcf7e614 | 321 | zfcp_fc_ns_gid_pn_eval(fc_req); |
7c7dc196 | 322 | } |
5ab944f9 SS |
323 | return ret; |
324 | } | |
325 | ||
326 | /** | |
fcf7e614 | 327 | * zfcp_fc_ns_gid_pn - initiate GID_PN nameserver request |
799b76d0 | 328 | * @port: port where GID_PN request is needed |
5ab944f9 SS |
329 | * return: -ENOMEM on error, 0 otherwise |
330 | */ | |
799b76d0 | 331 | static int zfcp_fc_ns_gid_pn(struct zfcp_port *port) |
5ab944f9 SS |
332 | { |
333 | int ret; | |
fcf7e614 | 334 | struct zfcp_fc_req *fc_req; |
799b76d0 | 335 | struct zfcp_adapter *adapter = port->adapter; |
5ab944f9 | 336 | |
fcf7e614 CS |
337 | fc_req = mempool_alloc(adapter->pool.gid_pn, GFP_ATOMIC); |
338 | if (!fc_req) | |
5ab944f9 SS |
339 | return -ENOMEM; |
340 | ||
fcf7e614 | 341 | memset(fc_req, 0, sizeof(*fc_req)); |
5ab944f9 | 342 | |
6f53a2d2 | 343 | ret = zfcp_fc_wka_port_get(&adapter->gs->ds); |
24073b47 | 344 | if (ret) |
5ab944f9 SS |
345 | goto out; |
346 | ||
fcf7e614 | 347 | ret = zfcp_fc_ns_gid_pn_request(port, fc_req); |
5ab944f9 | 348 | |
6f53a2d2 | 349 | zfcp_fc_wka_port_put(&adapter->gs->ds); |
5ab944f9 | 350 | out: |
fcf7e614 | 351 | mempool_free(fc_req, adapter->pool.gid_pn); |
24073b47 CS |
352 | return ret; |
353 | } | |
354 | ||
799b76d0 CS |
355 | void zfcp_fc_port_did_lookup(struct work_struct *work) |
356 | { | |
357 | int ret; | |
358 | struct zfcp_port *port = container_of(work, struct zfcp_port, | |
359 | gid_pn_work); | |
360 | ||
361 | ret = zfcp_fc_ns_gid_pn(port); | |
362 | if (ret) { | |
363 | /* could not issue gid_pn for some reason */ | |
ea4a3a6a | 364 | zfcp_erp_adapter_reopen(port->adapter, 0, "fcgpn_1"); |
799b76d0 CS |
365 | goto out; |
366 | } | |
367 | ||
368 | if (!port->d_id) { | |
edaed859 | 369 | zfcp_erp_set_port_status(port, ZFCP_STATUS_COMMON_ERP_FAILED); |
799b76d0 CS |
370 | goto out; |
371 | } | |
372 | ||
ea4a3a6a | 373 | zfcp_erp_port_reopen(port, 0, "fcgpn_3"); |
799b76d0 | 374 | out: |
615f59e0 | 375 | put_device(&port->dev); |
799b76d0 CS |
376 | } |
377 | ||
934aeb58 CS |
378 | /** |
379 | * zfcp_fc_trigger_did_lookup - trigger the d_id lookup using a GID_PN request | |
380 | * @port: The zfcp_port to lookup the d_id for. | |
381 | */ | |
382 | void zfcp_fc_trigger_did_lookup(struct zfcp_port *port) | |
383 | { | |
615f59e0 | 384 | get_device(&port->dev); |
934aeb58 | 385 | if (!queue_work(port->adapter->work_queue, &port->gid_pn_work)) |
615f59e0 | 386 | put_device(&port->dev); |
934aeb58 CS |
387 | } |
388 | ||
24073b47 CS |
389 | /** |
390 | * zfcp_fc_plogi_evaluate - evaluate PLOGI playload | |
391 | * @port: zfcp_port structure | |
392 | * @plogi: plogi payload | |
393 | * | |
394 | * Evaluate PLOGI playload and copy important fields into zfcp_port structure | |
395 | */ | |
9d05ce2c | 396 | void zfcp_fc_plogi_evaluate(struct zfcp_port *port, struct fc_els_flogi *plogi) |
24073b47 | 397 | { |
9d05ce2c CS |
398 | if (plogi->fl_wwpn != port->wwpn) { |
399 | port->d_id = 0; | |
400 | dev_warn(&port->adapter->ccw_device->dev, | |
401 | "A port opened with WWPN 0x%016Lx returned data that " | |
402 | "identifies it as WWPN 0x%016Lx\n", | |
403 | (unsigned long long) port->wwpn, | |
404 | (unsigned long long) plogi->fl_wwpn); | |
405 | return; | |
406 | } | |
407 | ||
408 | port->wwnn = plogi->fl_wwnn; | |
409 | port->maxframe_size = plogi->fl_csp.sp_bb_data; | |
410 | ||
411 | if (plogi->fl_cssp[0].cp_class & FC_CPC_VALID) | |
24073b47 | 412 | port->supported_classes |= FC_COS_CLASS1; |
9d05ce2c | 413 | if (plogi->fl_cssp[1].cp_class & FC_CPC_VALID) |
24073b47 | 414 | port->supported_classes |= FC_COS_CLASS2; |
9d05ce2c | 415 | if (plogi->fl_cssp[2].cp_class & FC_CPC_VALID) |
24073b47 | 416 | port->supported_classes |= FC_COS_CLASS3; |
9d05ce2c | 417 | if (plogi->fl_cssp[3].cp_class & FC_CPC_VALID) |
24073b47 CS |
418 | port->supported_classes |= FC_COS_CLASS4; |
419 | } | |
420 | ||
7c7dc196 | 421 | static void zfcp_fc_adisc_handler(void *data) |
24073b47 | 422 | { |
087897e3 CS |
423 | struct zfcp_fc_req *fc_req = data; |
424 | struct zfcp_port *port = fc_req->ct_els.port; | |
425 | struct fc_els_adisc *adisc_resp = &fc_req->u.adisc.rsp; | |
24073b47 | 426 | |
087897e3 | 427 | if (fc_req->ct_els.status) { |
24073b47 | 428 | /* request rejected or timed out */ |
5b43e719 | 429 | zfcp_erp_port_forced_reopen(port, ZFCP_STATUS_COMMON_ERP_FAILED, |
ea4a3a6a | 430 | "fcadh_1"); |
24073b47 CS |
431 | goto out; |
432 | } | |
433 | ||
434 | if (!port->wwnn) | |
9d05ce2c | 435 | port->wwnn = adisc_resp->adisc_wwnn; |
24073b47 | 436 | |
9d05ce2c | 437 | if ((port->wwpn != adisc_resp->adisc_wwpn) || |
a2fa0aed | 438 | !(atomic_read(&port->status) & ZFCP_STATUS_COMMON_OPEN)) { |
24095490 | 439 | zfcp_erp_port_reopen(port, ZFCP_STATUS_COMMON_ERP_FAILED, |
ea4a3a6a | 440 | "fcadh_2"); |
a2fa0aed CS |
441 | goto out; |
442 | } | |
24073b47 | 443 | |
a2fa0aed CS |
444 | /* port is good, unblock rport without going through erp */ |
445 | zfcp_scsi_schedule_rport_register(port); | |
24073b47 | 446 | out: |
14e242ea | 447 | atomic_clear_mask(ZFCP_STATUS_PORT_LINK_TEST, &port->status); |
615f59e0 | 448 | put_device(&port->dev); |
087897e3 | 449 | kmem_cache_free(zfcp_fc_req_cache, fc_req); |
24073b47 CS |
450 | } |
451 | ||
452 | static int zfcp_fc_adisc(struct zfcp_port *port) | |
453 | { | |
087897e3 | 454 | struct zfcp_fc_req *fc_req; |
24073b47 | 455 | struct zfcp_adapter *adapter = port->adapter; |
087897e3 | 456 | struct Scsi_Host *shost = adapter->scsi_host; |
ee744622 | 457 | int ret; |
24073b47 | 458 | |
087897e3 CS |
459 | fc_req = kmem_cache_zalloc(zfcp_fc_req_cache, GFP_ATOMIC); |
460 | if (!fc_req) | |
24073b47 CS |
461 | return -ENOMEM; |
462 | ||
087897e3 CS |
463 | fc_req->ct_els.port = port; |
464 | fc_req->ct_els.req = &fc_req->sg_req; | |
465 | fc_req->ct_els.resp = &fc_req->sg_rsp; | |
466 | sg_init_one(&fc_req->sg_req, &fc_req->u.adisc.req, | |
9d05ce2c | 467 | sizeof(struct fc_els_adisc)); |
087897e3 | 468 | sg_init_one(&fc_req->sg_rsp, &fc_req->u.adisc.rsp, |
9d05ce2c | 469 | sizeof(struct fc_els_adisc)); |
24073b47 | 470 | |
087897e3 CS |
471 | fc_req->ct_els.handler = zfcp_fc_adisc_handler; |
472 | fc_req->ct_els.handler_data = fc_req; | |
24073b47 CS |
473 | |
474 | /* acc. to FC-FS, hard_nport_id in ADISC should not be set for ports | |
475 | without FC-AL-2 capability, so we don't set it */ | |
087897e3 CS |
476 | fc_req->u.adisc.req.adisc_wwpn = fc_host_port_name(shost); |
477 | fc_req->u.adisc.req.adisc_wwnn = fc_host_node_name(shost); | |
478 | fc_req->u.adisc.req.adisc_cmd = ELS_ADISC; | |
479 | hton24(fc_req->u.adisc.req.adisc_port_id, fc_host_port_id(shost)); | |
24073b47 | 480 | |
087897e3 | 481 | ret = zfcp_fsf_send_els(adapter, port->d_id, &fc_req->ct_els, |
51375ee8 | 482 | ZFCP_FC_CTELS_TMO); |
ee744622 | 483 | if (ret) |
087897e3 | 484 | kmem_cache_free(zfcp_fc_req_cache, fc_req); |
ee744622 CS |
485 | |
486 | return ret; | |
24073b47 CS |
487 | } |
488 | ||
8fdf30d5 | 489 | void zfcp_fc_link_test_work(struct work_struct *work) |
24073b47 | 490 | { |
8fdf30d5 CS |
491 | struct zfcp_port *port = |
492 | container_of(work, struct zfcp_port, test_link_work); | |
24073b47 CS |
493 | int retval; |
494 | ||
615f59e0 | 495 | get_device(&port->dev); |
a2fa0aed CS |
496 | port->rport_task = RPORT_DEL; |
497 | zfcp_scsi_rport_work(&port->rport_work); | |
498 | ||
14e242ea CS |
499 | /* only issue one test command at one time per port */ |
500 | if (atomic_read(&port->status) & ZFCP_STATUS_PORT_LINK_TEST) | |
501 | goto out; | |
502 | ||
503 | atomic_set_mask(ZFCP_STATUS_PORT_LINK_TEST, &port->status); | |
504 | ||
24073b47 | 505 | retval = zfcp_fc_adisc(port); |
9528539c | 506 | if (retval == 0) |
24073b47 CS |
507 | return; |
508 | ||
509 | /* send of ADISC was not possible */ | |
14e242ea | 510 | atomic_clear_mask(ZFCP_STATUS_PORT_LINK_TEST, &port->status); |
ea4a3a6a | 511 | zfcp_erp_port_forced_reopen(port, 0, "fcltwk1"); |
a2fa0aed | 512 | |
14e242ea | 513 | out: |
615f59e0 | 514 | put_device(&port->dev); |
24073b47 | 515 | } |
cc8c2829 | 516 | |
8fdf30d5 | 517 | /** |
6f53a2d2 | 518 | * zfcp_fc_test_link - lightweight link test procedure |
8fdf30d5 CS |
519 | * @port: port to be tested |
520 | * | |
521 | * Test status of a link to a remote port using the ELS command ADISC. | |
522 | * If there is a problem with the remote port, error recovery steps | |
523 | * will be triggered. | |
524 | */ | |
6f53a2d2 | 525 | void zfcp_fc_test_link(struct zfcp_port *port) |
8fdf30d5 | 526 | { |
615f59e0 | 527 | get_device(&port->dev); |
4544683a | 528 | if (!queue_work(port->adapter->work_queue, &port->test_link_work)) |
615f59e0 | 529 | put_device(&port->dev); |
8fdf30d5 CS |
530 | } |
531 | ||
f9773229 | 532 | static struct zfcp_fc_req *zfcp_alloc_sg_env(int buf_num) |
cc8c2829 | 533 | { |
f9773229 | 534 | struct zfcp_fc_req *fc_req; |
cc8c2829 | 535 | |
f9773229 CS |
536 | fc_req = kmem_cache_zalloc(zfcp_fc_req_cache, GFP_KERNEL); |
537 | if (!fc_req) | |
cc8c2829 SS |
538 | return NULL; |
539 | ||
f9773229 CS |
540 | if (zfcp_sg_setup_table(&fc_req->sg_rsp, buf_num)) { |
541 | kmem_cache_free(zfcp_fc_req_cache, fc_req); | |
542 | return NULL; | |
cc8c2829 | 543 | } |
cc8c2829 | 544 | |
f9773229 CS |
545 | sg_init_one(&fc_req->sg_req, &fc_req->u.gpn_ft.req, |
546 | sizeof(struct zfcp_fc_gpn_ft_req)); | |
cc8c2829 | 547 | |
f9773229 CS |
548 | return fc_req; |
549 | } | |
cc8c2829 | 550 | |
f9773229 | 551 | static int zfcp_fc_send_gpn_ft(struct zfcp_fc_req *fc_req, |
6f53a2d2 | 552 | struct zfcp_adapter *adapter, int max_bytes) |
cc8c2829 | 553 | { |
f9773229 CS |
554 | struct zfcp_fsf_ct_els *ct_els = &fc_req->ct_els; |
555 | struct zfcp_fc_gpn_ft_req *req = &fc_req->u.gpn_ft.req; | |
7c7dc196 | 556 | DECLARE_COMPLETION_ONSTACK(completion); |
cc8c2829 SS |
557 | int ret; |
558 | ||
f9773229 | 559 | zfcp_fc_ct_ns_init(&req->ct_hdr, FC_NS_GPN_FT, max_bytes); |
dbf5dfe9 | 560 | req->gpn_ft.fn_fc4_type = FC_TYPE_FCP; |
cc8c2829 | 561 | |
f9773229 CS |
562 | ct_els->handler = zfcp_fc_complete; |
563 | ct_els->handler_data = &completion; | |
564 | ct_els->req = &fc_req->sg_req; | |
565 | ct_els->resp = &fc_req->sg_rsp; | |
cc8c2829 | 566 | |
f9773229 | 567 | ret = zfcp_fsf_send_ct(&adapter->gs->ds, ct_els, NULL, |
51375ee8 | 568 | ZFCP_FC_CTELS_TMO); |
cc8c2829 | 569 | if (!ret) |
7c7dc196 | 570 | wait_for_completion(&completion); |
cc8c2829 SS |
571 | return ret; |
572 | } | |
573 | ||
f3450c7b | 574 | static void zfcp_fc_validate_port(struct zfcp_port *port, struct list_head *lh) |
cc8c2829 | 575 | { |
6ab35c07 MP |
576 | if (!(atomic_read(&port->status) & ZFCP_STATUS_COMMON_NOESC)) |
577 | return; | |
578 | ||
cc8c2829 SS |
579 | atomic_clear_mask(ZFCP_STATUS_COMMON_NOESC, &port->status); |
580 | ||
0406289e | 581 | if ((port->supported_classes != 0) || |
f3450c7b | 582 | !list_empty(&port->unit_list)) |
cc8c2829 | 583 | return; |
f3450c7b | 584 | |
f3450c7b | 585 | list_move_tail(&port->list, lh); |
cc8c2829 SS |
586 | } |
587 | ||
f9773229 | 588 | static int zfcp_fc_eval_gpn_ft(struct zfcp_fc_req *fc_req, |
7c7dc196 | 589 | struct zfcp_adapter *adapter, int max_entries) |
cc8c2829 | 590 | { |
f9773229 CS |
591 | struct zfcp_fsf_ct_els *ct_els = &fc_req->ct_els; |
592 | struct scatterlist *sg = &fc_req->sg_rsp; | |
dbf5dfe9 CS |
593 | struct fc_ct_hdr *hdr = sg_virt(sg); |
594 | struct fc_gpn_ft_resp *acc = sg_virt(sg); | |
cc8c2829 | 595 | struct zfcp_port *port, *tmp; |
ecf0c772 | 596 | unsigned long flags; |
f3450c7b | 597 | LIST_HEAD(remove_lh); |
cc8c2829 | 598 | u32 d_id; |
47f7bba5 | 599 | int ret = 0, x, last = 0; |
cc8c2829 | 600 | |
f9773229 | 601 | if (ct_els->status) |
cc8c2829 SS |
602 | return -EIO; |
603 | ||
dbf5dfe9 CS |
604 | if (hdr->ct_cmd != FC_FS_ACC) { |
605 | if (hdr->ct_reason == FC_BA_RJT_UNABLE) | |
cc8c2829 SS |
606 | return -EAGAIN; /* might be a temporary condition */ |
607 | return -EIO; | |
608 | } | |
609 | ||
dbf5dfe9 | 610 | if (hdr->ct_mr_size) { |
39eb7e9a CS |
611 | dev_warn(&adapter->ccw_device->dev, |
612 | "The name server reported %d words residual data\n", | |
dbf5dfe9 | 613 | hdr->ct_mr_size); |
cc8c2829 | 614 | return -E2BIG; |
39eb7e9a | 615 | } |
cc8c2829 | 616 | |
cc8c2829 | 617 | /* first entry is the header */ |
39eb7e9a | 618 | for (x = 1; x < max_entries && !last; x++) { |
dbf5dfe9 | 619 | if (x % (ZFCP_FC_GPN_FT_ENT_PAGE + 1)) |
cc8c2829 SS |
620 | acc++; |
621 | else | |
622 | acc = sg_virt(++sg); | |
623 | ||
dbf5dfe9 CS |
624 | last = acc->fp_flags & FC_NS_FID_LAST; |
625 | d_id = ntoh24(acc->fp_fid); | |
cc8c2829 | 626 | |
5ab944f9 | 627 | /* don't attach ports with a well known address */ |
dbf5dfe9 | 628 | if (d_id >= FC_FID_WELL_KNOWN_BASE) |
5ab944f9 | 629 | continue; |
cc8c2829 | 630 | /* skip the adapter's port and known remote ports */ |
dbf5dfe9 | 631 | if (acc->fp_wwpn == fc_host_port_name(adapter->scsi_host)) |
cc8c2829 SS |
632 | continue; |
633 | ||
dbf5dfe9 | 634 | port = zfcp_port_enqueue(adapter, acc->fp_wwpn, |
cc8c2829 | 635 | ZFCP_STATUS_COMMON_NOESC, d_id); |
ecf0c772 | 636 | if (!IS_ERR(port)) |
ea4a3a6a | 637 | zfcp_erp_port_reopen(port, 0, "fcegpf1"); |
ecf0c772 SS |
638 | else if (PTR_ERR(port) != -EEXIST) |
639 | ret = PTR_ERR(port); | |
cc8c2829 SS |
640 | } |
641 | ||
642 | zfcp_erp_wait(adapter); | |
ecf0c772 SS |
643 | write_lock_irqsave(&adapter->port_list_lock, flags); |
644 | list_for_each_entry_safe(port, tmp, &adapter->port_list, list) | |
f3450c7b | 645 | zfcp_fc_validate_port(port, &remove_lh); |
ecf0c772 | 646 | write_unlock_irqrestore(&adapter->port_list_lock, flags); |
f3450c7b SS |
647 | |
648 | list_for_each_entry_safe(port, tmp, &remove_lh, list) { | |
ea4a3a6a | 649 | zfcp_erp_port_shutdown(port, 0, "fcegpf2"); |
615f59e0 | 650 | zfcp_device_unregister(&port->dev, &zfcp_sysfs_port_attrs); |
f3450c7b SS |
651 | } |
652 | ||
cc8c2829 SS |
653 | return ret; |
654 | } | |
655 | ||
656 | /** | |
6f53a2d2 | 657 | * zfcp_fc_scan_ports - scan remote ports and attach new ports |
9eae07ef | 658 | * @work: reference to scheduled work |
cc8c2829 | 659 | */ |
9eae07ef | 660 | void zfcp_fc_scan_ports(struct work_struct *work) |
cc8c2829 | 661 | { |
9eae07ef SS |
662 | struct zfcp_adapter *adapter = container_of(work, struct zfcp_adapter, |
663 | scan_work); | |
cc8c2829 | 664 | int ret, i; |
f9773229 | 665 | struct zfcp_fc_req *fc_req; |
39eb7e9a CS |
666 | int chain, max_entries, buf_num, max_bytes; |
667 | ||
668 | chain = adapter->adapter_features & FSF_FEATURE_ELS_CT_CHAINED_SBALS; | |
dbf5dfe9 CS |
669 | buf_num = chain ? ZFCP_FC_GPN_FT_NUM_BUFS : 1; |
670 | max_entries = chain ? ZFCP_FC_GPN_FT_MAX_ENT : ZFCP_FC_GPN_FT_ENT_PAGE; | |
671 | max_bytes = chain ? ZFCP_FC_GPN_FT_MAX_SIZE : ZFCP_FC_CT_SIZE_PAGE; | |
cc8c2829 | 672 | |
306b6edc SS |
673 | if (fc_host_port_type(adapter->scsi_host) != FC_PORTTYPE_NPORT && |
674 | fc_host_port_type(adapter->scsi_host) != FC_PORTTYPE_NPIV) | |
9eae07ef | 675 | return; |
cc8c2829 | 676 | |
9eae07ef SS |
677 | if (zfcp_fc_wka_port_get(&adapter->gs->ds)) |
678 | return; | |
cc8c2829 | 679 | |
f9773229 CS |
680 | fc_req = zfcp_alloc_sg_env(buf_num); |
681 | if (!fc_req) | |
5ab944f9 | 682 | goto out; |
cc8c2829 SS |
683 | |
684 | for (i = 0; i < 3; i++) { | |
f9773229 | 685 | ret = zfcp_fc_send_gpn_ft(fc_req, adapter, max_bytes); |
cc8c2829 | 686 | if (!ret) { |
f9773229 | 687 | ret = zfcp_fc_eval_gpn_ft(fc_req, adapter, max_entries); |
cc8c2829 SS |
688 | if (ret == -EAGAIN) |
689 | ssleep(1); | |
690 | else | |
691 | break; | |
692 | } | |
693 | } | |
f9773229 CS |
694 | zfcp_sg_free_table(&fc_req->sg_rsp, buf_num); |
695 | kmem_cache_free(zfcp_fc_req_cache, fc_req); | |
5ab944f9 | 696 | out: |
6f53a2d2 | 697 | zfcp_fc_wka_port_put(&adapter->gs->ds); |
cc8c2829 SS |
698 | } |
699 | ||
038d9446 CS |
700 | static int zfcp_fc_gspn(struct zfcp_adapter *adapter, |
701 | struct zfcp_fc_req *fc_req) | |
702 | { | |
703 | DECLARE_COMPLETION_ONSTACK(completion); | |
704 | char devno[] = "DEVNO:"; | |
705 | struct zfcp_fsf_ct_els *ct_els = &fc_req->ct_els; | |
706 | struct zfcp_fc_gspn_req *gspn_req = &fc_req->u.gspn.req; | |
707 | struct zfcp_fc_gspn_rsp *gspn_rsp = &fc_req->u.gspn.rsp; | |
708 | int ret; | |
709 | ||
710 | zfcp_fc_ct_ns_init(&gspn_req->ct_hdr, FC_NS_GSPN_ID, | |
711 | FC_SYMBOLIC_NAME_SIZE); | |
712 | hton24(gspn_req->gspn.fp_fid, fc_host_port_id(adapter->scsi_host)); | |
713 | ||
714 | sg_init_one(&fc_req->sg_req, gspn_req, sizeof(*gspn_req)); | |
715 | sg_init_one(&fc_req->sg_rsp, gspn_rsp, sizeof(*gspn_rsp)); | |
716 | ||
717 | ct_els->handler = zfcp_fc_complete; | |
718 | ct_els->handler_data = &completion; | |
719 | ct_els->req = &fc_req->sg_req; | |
720 | ct_els->resp = &fc_req->sg_rsp; | |
721 | ||
722 | ret = zfcp_fsf_send_ct(&adapter->gs->ds, ct_els, NULL, | |
723 | ZFCP_FC_CTELS_TMO); | |
724 | if (ret) | |
725 | return ret; | |
726 | ||
727 | wait_for_completion(&completion); | |
728 | if (ct_els->status) | |
729 | return ct_els->status; | |
730 | ||
731 | if (fc_host_port_type(adapter->scsi_host) == FC_PORTTYPE_NPIV && | |
732 | !(strstr(gspn_rsp->gspn.fp_name, devno))) | |
733 | snprintf(fc_host_symbolic_name(adapter->scsi_host), | |
734 | FC_SYMBOLIC_NAME_SIZE, "%s%s %s NAME: %s", | |
735 | gspn_rsp->gspn.fp_name, devno, | |
736 | dev_name(&adapter->ccw_device->dev), | |
737 | init_utsname()->nodename); | |
738 | else | |
739 | strlcpy(fc_host_symbolic_name(adapter->scsi_host), | |
740 | gspn_rsp->gspn.fp_name, FC_SYMBOLIC_NAME_SIZE); | |
741 | ||
742 | return 0; | |
743 | } | |
744 | ||
745 | static void zfcp_fc_rspn(struct zfcp_adapter *adapter, | |
746 | struct zfcp_fc_req *fc_req) | |
747 | { | |
748 | DECLARE_COMPLETION_ONSTACK(completion); | |
749 | struct Scsi_Host *shost = adapter->scsi_host; | |
750 | struct zfcp_fsf_ct_els *ct_els = &fc_req->ct_els; | |
751 | struct zfcp_fc_rspn_req *rspn_req = &fc_req->u.rspn.req; | |
752 | struct fc_ct_hdr *rspn_rsp = &fc_req->u.rspn.rsp; | |
753 | int ret, len; | |
754 | ||
755 | zfcp_fc_ct_ns_init(&rspn_req->ct_hdr, FC_NS_RSPN_ID, | |
756 | FC_SYMBOLIC_NAME_SIZE); | |
757 | hton24(rspn_req->rspn.fr_fid.fp_fid, fc_host_port_id(shost)); | |
758 | len = strlcpy(rspn_req->rspn.fr_name, fc_host_symbolic_name(shost), | |
759 | FC_SYMBOLIC_NAME_SIZE); | |
760 | rspn_req->rspn.fr_name_len = len; | |
761 | ||
762 | sg_init_one(&fc_req->sg_req, rspn_req, sizeof(*rspn_req)); | |
763 | sg_init_one(&fc_req->sg_rsp, rspn_rsp, sizeof(*rspn_rsp)); | |
764 | ||
765 | ct_els->handler = zfcp_fc_complete; | |
766 | ct_els->handler_data = &completion; | |
767 | ct_els->req = &fc_req->sg_req; | |
768 | ct_els->resp = &fc_req->sg_rsp; | |
769 | ||
770 | ret = zfcp_fsf_send_ct(&adapter->gs->ds, ct_els, NULL, | |
771 | ZFCP_FC_CTELS_TMO); | |
772 | if (!ret) | |
773 | wait_for_completion(&completion); | |
774 | } | |
775 | ||
776 | /** | |
777 | * zfcp_fc_sym_name_update - Retrieve and update the symbolic port name | |
778 | * @work: ns_up_work of the adapter where to update the symbolic port name | |
779 | * | |
780 | * Retrieve the current symbolic port name that may have been set by | |
781 | * the hardware using the GSPN request and update the fc_host | |
782 | * symbolic_name sysfs attribute. When running in NPIV mode (and hence | |
783 | * the port name is unique for this system), update the symbolic port | |
784 | * name to add Linux specific information and update the FC nameserver | |
785 | * using the RSPN request. | |
786 | */ | |
787 | void zfcp_fc_sym_name_update(struct work_struct *work) | |
788 | { | |
789 | struct zfcp_adapter *adapter = container_of(work, struct zfcp_adapter, | |
790 | ns_up_work); | |
791 | int ret; | |
792 | struct zfcp_fc_req *fc_req; | |
793 | ||
794 | if (fc_host_port_type(adapter->scsi_host) != FC_PORTTYPE_NPORT && | |
795 | fc_host_port_type(adapter->scsi_host) != FC_PORTTYPE_NPIV) | |
796 | return; | |
797 | ||
798 | fc_req = kmem_cache_zalloc(zfcp_fc_req_cache, GFP_KERNEL); | |
799 | if (!fc_req) | |
800 | return; | |
801 | ||
802 | ret = zfcp_fc_wka_port_get(&adapter->gs->ds); | |
803 | if (ret) | |
804 | goto out_free; | |
805 | ||
806 | ret = zfcp_fc_gspn(adapter, fc_req); | |
807 | if (ret || fc_host_port_type(adapter->scsi_host) != FC_PORTTYPE_NPIV) | |
808 | goto out_ds_put; | |
809 | ||
810 | memset(fc_req, 0, sizeof(*fc_req)); | |
811 | zfcp_fc_rspn(adapter, fc_req); | |
812 | ||
813 | out_ds_put: | |
814 | zfcp_fc_wka_port_put(&adapter->gs->ds); | |
815 | out_free: | |
816 | kmem_cache_free(zfcp_fc_req_cache, fc_req); | |
817 | } | |
818 | ||
7c7dc196 | 819 | static void zfcp_fc_ct_els_job_handler(void *data) |
9d544f2b | 820 | { |
7c7dc196 CS |
821 | struct fc_bsg_job *job = data; |
822 | struct zfcp_fsf_ct_els *zfcp_ct_els = job->dd_data; | |
7dec9cf1 | 823 | struct fc_bsg_reply *jr = job->reply; |
9d544f2b | 824 | |
7dec9cf1 SS |
825 | jr->reply_payload_rcv_len = job->reply_payload.payload_len; |
826 | jr->reply_data.ctels_reply.status = FC_CTELS_STATUS_OK; | |
827 | jr->result = zfcp_ct_els->status ? -EIO : 0; | |
9d544f2b | 828 | job->job_done(job); |
9d544f2b SS |
829 | } |
830 | ||
f09d5454 CS |
831 | static struct zfcp_fc_wka_port *zfcp_fc_job_wka_port(struct fc_bsg_job *job) |
832 | { | |
833 | u32 preamble_word1; | |
834 | u8 gs_type; | |
835 | struct zfcp_adapter *adapter; | |
836 | ||
837 | preamble_word1 = job->request->rqst_data.r_ct.preamble_word1; | |
838 | gs_type = (preamble_word1 & 0xff000000) >> 24; | |
839 | ||
840 | adapter = (struct zfcp_adapter *) job->shost->hostdata[0]; | |
841 | ||
842 | switch (gs_type) { | |
843 | case FC_FST_ALIAS: | |
844 | return &adapter->gs->as; | |
845 | case FC_FST_MGMT: | |
846 | return &adapter->gs->ms; | |
847 | case FC_FST_TIME: | |
848 | return &adapter->gs->ts; | |
849 | break; | |
850 | case FC_FST_DIR: | |
851 | return &adapter->gs->ds; | |
852 | break; | |
853 | default: | |
854 | return NULL; | |
855 | } | |
856 | } | |
857 | ||
858 | static void zfcp_fc_ct_job_handler(void *data) | |
859 | { | |
860 | struct fc_bsg_job *job = data; | |
861 | struct zfcp_fc_wka_port *wka_port; | |
862 | ||
863 | wka_port = zfcp_fc_job_wka_port(job); | |
864 | zfcp_fc_wka_port_put(wka_port); | |
865 | ||
866 | zfcp_fc_ct_els_job_handler(data); | |
867 | } | |
868 | ||
7c7dc196 CS |
869 | static int zfcp_fc_exec_els_job(struct fc_bsg_job *job, |
870 | struct zfcp_adapter *adapter) | |
9d544f2b | 871 | { |
7c7dc196 | 872 | struct zfcp_fsf_ct_els *els = job->dd_data; |
9d544f2b | 873 | struct fc_rport *rport = job->rport; |
9d544f2b | 874 | struct zfcp_port *port; |
7c7dc196 | 875 | u32 d_id; |
9d544f2b | 876 | |
9d544f2b | 877 | if (rport) { |
ea945ff8 | 878 | port = zfcp_get_port_by_wwpn(adapter, rport->port_name); |
7c7dc196 | 879 | if (!port) |
9d544f2b | 880 | return -EINVAL; |
ecf0c772 | 881 | |
7c7dc196 | 882 | d_id = port->d_id; |
615f59e0 | 883 | put_device(&port->dev); |
7c7dc196 CS |
884 | } else |
885 | d_id = ntoh24(job->request->rqst_data.h_els.port_id); | |
9d544f2b | 886 | |
f09d5454 | 887 | els->handler = zfcp_fc_ct_els_job_handler; |
51375ee8 | 888 | return zfcp_fsf_send_els(adapter, d_id, els, job->req->timeout / HZ); |
9d544f2b SS |
889 | } |
890 | ||
7c7dc196 CS |
891 | static int zfcp_fc_exec_ct_job(struct fc_bsg_job *job, |
892 | struct zfcp_adapter *adapter) | |
9d544f2b SS |
893 | { |
894 | int ret; | |
7c7dc196 CS |
895 | struct zfcp_fsf_ct_els *ct = job->dd_data; |
896 | struct zfcp_fc_wka_port *wka_port; | |
9d544f2b | 897 | |
f09d5454 CS |
898 | wka_port = zfcp_fc_job_wka_port(job); |
899 | if (!wka_port) | |
900 | return -EINVAL; | |
9d544f2b | 901 | |
7c7dc196 CS |
902 | ret = zfcp_fc_wka_port_get(wka_port); |
903 | if (ret) | |
9d544f2b | 904 | return ret; |
9d544f2b | 905 | |
f09d5454 | 906 | ct->handler = zfcp_fc_ct_job_handler; |
51375ee8 | 907 | ret = zfcp_fsf_send_ct(wka_port, ct, NULL, job->req->timeout / HZ); |
7c7dc196 CS |
908 | if (ret) |
909 | zfcp_fc_wka_port_put(wka_port); | |
9d544f2b | 910 | |
9d544f2b SS |
911 | return ret; |
912 | } | |
d5a282a1 | 913 | |
7c7dc196 CS |
914 | int zfcp_fc_exec_bsg_job(struct fc_bsg_job *job) |
915 | { | |
916 | struct Scsi_Host *shost; | |
917 | struct zfcp_adapter *adapter; | |
918 | struct zfcp_fsf_ct_els *ct_els = job->dd_data; | |
919 | ||
920 | shost = job->rport ? rport_to_shost(job->rport) : job->shost; | |
921 | adapter = (struct zfcp_adapter *)shost->hostdata[0]; | |
922 | ||
923 | if (!(atomic_read(&adapter->status) & ZFCP_STATUS_COMMON_OPEN)) | |
924 | return -EINVAL; | |
925 | ||
926 | ct_els->req = job->request_payload.sg_list; | |
927 | ct_els->resp = job->reply_payload.sg_list; | |
7c7dc196 CS |
928 | ct_els->handler_data = job; |
929 | ||
930 | switch (job->request->msgcode) { | |
931 | case FC_BSG_RPT_ELS: | |
932 | case FC_BSG_HST_ELS_NOLOGIN: | |
933 | return zfcp_fc_exec_els_job(job, adapter); | |
934 | case FC_BSG_RPT_CT: | |
935 | case FC_BSG_HST_CT: | |
936 | return zfcp_fc_exec_ct_job(job, adapter); | |
937 | default: | |
938 | return -EINVAL; | |
939 | } | |
940 | } | |
941 | ||
491ca442 SS |
942 | int zfcp_fc_timeout_bsg_job(struct fc_bsg_job *job) |
943 | { | |
944 | /* hardware tracks timeout, reset bsg timeout to not interfere */ | |
945 | return -EAGAIN; | |
946 | } | |
947 | ||
d5a282a1 SS |
948 | int zfcp_fc_gs_setup(struct zfcp_adapter *adapter) |
949 | { | |
bd0072ec | 950 | struct zfcp_fc_wka_ports *wka_ports; |
d5a282a1 | 951 | |
bd0072ec | 952 | wka_ports = kzalloc(sizeof(struct zfcp_fc_wka_ports), GFP_KERNEL); |
d5a282a1 SS |
953 | if (!wka_ports) |
954 | return -ENOMEM; | |
955 | ||
956 | adapter->gs = wka_ports; | |
957 | zfcp_fc_wka_port_init(&wka_ports->ms, FC_FID_MGMT_SERV, adapter); | |
958 | zfcp_fc_wka_port_init(&wka_ports->ts, FC_FID_TIME_SERV, adapter); | |
959 | zfcp_fc_wka_port_init(&wka_ports->ds, FC_FID_DIR_SERV, adapter); | |
960 | zfcp_fc_wka_port_init(&wka_ports->as, FC_FID_ALIASES, adapter); | |
d5a282a1 SS |
961 | |
962 | return 0; | |
963 | } | |
964 | ||
965 | void zfcp_fc_gs_destroy(struct zfcp_adapter *adapter) | |
966 | { | |
967 | kfree(adapter->gs); | |
968 | adapter->gs = NULL; | |
969 | } | |
970 |