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1 | /* |
2 | * FiberChannel transport specific attributes exported to sysfs. |
3 | * |
4 | * Copyright (c) 2003 Silicon Graphics, Inc. All rights reserved. |
5 | * |
6 | * This program is free software; you can redistribute it and/or modify |
7 | * it under the terms of the GNU General Public License as published by |
8 | * the Free Software Foundation; either version 2 of the License, or |
9 | * (at your option) any later version. |
10 | * |
11 | * This program is distributed in the hope that it will be useful, |
12 | * but WITHOUT ANY WARRANTY; without even the implied warranty of |
13 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the |
14 | * GNU General Public License for more details. |
15 | * |
16 | * You should have received a copy of the GNU General Public License |
17 | * along with this program; if not, write to the Free Software |
18 | * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA |
19 | * |
20 | * ======== |
21 | * |
22 | * Copyright (C) 2004-2007 James Smart, Emulex Corporation |
23 | * Rewrite for host, target, device, and remote port attributes, |
24 | * statistics, and service functions... |
25 | * |
26 | */ |
27 | #ifndef SCSI_TRANSPORT_FC_H |
28 | #define SCSI_TRANSPORT_FC_H |
29 | |
30 | #include <linux/sched.h> |
31 | #include <scsi/scsi.h> |
32 | #include <scsi/scsi_netlink.h> |
33 | |
34 | struct scsi_transport_template; |
35 | |
36 | /* |
37 | * FC Port definitions - Following FC HBAAPI guidelines |
38 | * |
39 | * Note: Not all binary values for the different fields match HBAAPI. |
40 | * Instead, we use densely packed ordinal values or enums. |
41 | * We get away with this as we never present the actual binary values |
42 | * externally. For sysfs, we always present the string that describes |
43 | * the value. Thus, an admin doesn't need a magic HBAAPI decoder ring |
44 | * to understand the values. The HBAAPI user-space library is free to |
45 | * convert the strings into the HBAAPI-specified binary values. |
46 | * |
47 | * Note: Not all HBAAPI-defined values are contained in the definitions |
48 | * below. Those not appropriate to an fc_host (e.g. FCP initiator) have |
49 | * been removed. |
50 | */ |
51 | |
52 | /* |
53 | * fc_port_type: If you alter this, you also need to alter scsi_transport_fc.c |
54 | * (for the ascii descriptions). |
55 | */ |
56 | enum fc_port_type { |
57 | FC_PORTTYPE_UNKNOWN, |
58 | FC_PORTTYPE_OTHER, |
59 | FC_PORTTYPE_NOTPRESENT, |
60 | FC_PORTTYPE_NPORT, /* Attached to FPort */ |
61 | FC_PORTTYPE_NLPORT, /* (Public) Loop w/ FLPort */ |
62 | FC_PORTTYPE_LPORT, /* (Private) Loop w/o FLPort */ |
63 | FC_PORTTYPE_PTP, /* Point to Point w/ another NPort */ |
64 | FC_PORTTYPE_NPIV, /* VPORT based on NPIV */ |
65 | }; |
66 | |
67 | |
68 | /* |
69 | * fc_port_state: If you alter this, you also need to alter scsi_transport_fc.c |
70 | * (for the ascii descriptions). |
71 | */ |
72 | enum fc_port_state { |
73 | FC_PORTSTATE_UNKNOWN, |
74 | FC_PORTSTATE_NOTPRESENT, |
75 | FC_PORTSTATE_ONLINE, |
76 | FC_PORTSTATE_OFFLINE, /* User has taken Port Offline */ |
77 | FC_PORTSTATE_BLOCKED, |
78 | FC_PORTSTATE_BYPASSED, |
79 | FC_PORTSTATE_DIAGNOSTICS, |
80 | FC_PORTSTATE_LINKDOWN, |
81 | FC_PORTSTATE_ERROR, |
82 | FC_PORTSTATE_LOOPBACK, |
83 | FC_PORTSTATE_DELETED, |
84 | }; |
85 | |
86 | |
87 | /* |
88 | * fc_vport_state: If you alter this, you also need to alter |
89 | * scsi_transport_fc.c (for the ascii descriptions). |
90 | */ |
91 | enum fc_vport_state { |
92 | FC_VPORT_UNKNOWN, |
93 | FC_VPORT_ACTIVE, |
94 | FC_VPORT_DISABLED, |
95 | FC_VPORT_LINKDOWN, |
96 | FC_VPORT_INITIALIZING, |
97 | FC_VPORT_NO_FABRIC_SUPP, |
98 | FC_VPORT_NO_FABRIC_RSCS, |
99 | FC_VPORT_FABRIC_LOGOUT, |
100 | FC_VPORT_FABRIC_REJ_WWN, |
101 | FC_VPORT_FAILED, |
102 | }; |
103 | |
104 | |
105 | |
106 | /* |
107 | * FC Classes of Service |
108 | * Note: values are not enumerated, as they can be "or'd" together |
109 | * for reporting (e.g. report supported_classes). If you alter this list, |
110 | * you also need to alter scsi_transport_fc.c (for the ascii descriptions). |
111 | */ |
112 | #define FC_COS_UNSPECIFIED 0 |
113 | #define FC_COS_CLASS1 2 |
114 | #define FC_COS_CLASS2 4 |
115 | #define FC_COS_CLASS3 8 |
116 | #define FC_COS_CLASS4 0x10 |
117 | #define FC_COS_CLASS6 0x40 |
118 | |
119 | /* |
120 | * FC Port Speeds |
121 | * Note: values are not enumerated, as they can be "or'd" together |
122 | * for reporting (e.g. report supported_speeds). If you alter this list, |
123 | * you also need to alter scsi_transport_fc.c (for the ascii descriptions). |
124 | */ |
125 | #define FC_PORTSPEED_UNKNOWN 0 /* Unknown - transceiver |
126 | incapable of reporting */ |
127 | #define FC_PORTSPEED_1GBIT 1 |
128 | #define FC_PORTSPEED_2GBIT 2 |
129 | #define FC_PORTSPEED_4GBIT 4 |
130 | #define FC_PORTSPEED_10GBIT 8 |
131 | #define FC_PORTSPEED_8GBIT 0x10 |
132 | #define FC_PORTSPEED_16GBIT 0x20 |
133 | #define FC_PORTSPEED_NOT_NEGOTIATED (1 << 15) /* Speed not established */ |
134 | |
135 | /* |
136 | * fc_tgtid_binding_type: If you alter this, you also need to alter |
137 | * scsi_transport_fc.c (for the ascii descriptions). |
138 | */ |
139 | enum fc_tgtid_binding_type { |
140 | FC_TGTID_BIND_NONE, |
141 | FC_TGTID_BIND_BY_WWPN, |
142 | FC_TGTID_BIND_BY_WWNN, |
143 | FC_TGTID_BIND_BY_ID, |
144 | }; |
145 | |
146 | /* |
147 | * FC Port Roles |
148 | * Note: values are not enumerated, as they can be "or'd" together |
149 | * for reporting (e.g. report roles). If you alter this list, |
150 | * you also need to alter scsi_transport_fc.c (for the ascii descriptions). |
151 | */ |
152 | #define FC_PORT_ROLE_UNKNOWN 0x00 |
153 | #define FC_PORT_ROLE_FCP_TARGET 0x01 |
154 | #define FC_PORT_ROLE_FCP_INITIATOR 0x02 |
155 | #define FC_PORT_ROLE_IP_PORT 0x04 |
156 | |
157 | /* The following are for compatibility */ |
158 | #define FC_RPORT_ROLE_UNKNOWN FC_PORT_ROLE_UNKNOWN |
159 | #define FC_RPORT_ROLE_FCP_TARGET FC_PORT_ROLE_FCP_TARGET |
160 | #define FC_RPORT_ROLE_FCP_INITIATOR FC_PORT_ROLE_FCP_INITIATOR |
161 | #define FC_RPORT_ROLE_IP_PORT FC_PORT_ROLE_IP_PORT |
162 | |
163 | |
164 | /* Macro for use in defining Virtual Port attributes */ |
165 | #define FC_VPORT_ATTR(_name,_mode,_show,_store) \ |
166 | struct device_attribute dev_attr_vport_##_name = \ |
167 | __ATTR(_name,_mode,_show,_store) |
168 | |
169 | /* |
170 | * fc_vport_identifiers: This set of data contains all elements |
171 | * to uniquely identify and instantiate a FC virtual port. |
172 | * |
173 | * Notes: |
174 | * symbolic_name: The driver is to append the symbolic_name string data |
175 | * to the symbolic_node_name data that it generates by default. |
176 | * the resulting combination should then be registered with the switch. |
177 | * It is expected that things like Xen may stuff a VM title into |
178 | * this field. |
179 | */ |
180 | #define FC_VPORT_SYMBOLIC_NAMELEN 64 |
181 | struct fc_vport_identifiers { |
182 | u64 node_name; |
183 | u64 port_name; |
184 | u32 roles; |
185 | bool disable; |
186 | enum fc_port_type vport_type; /* only FC_PORTTYPE_NPIV allowed */ |
187 | char symbolic_name[FC_VPORT_SYMBOLIC_NAMELEN]; |
188 | }; |
189 | |
190 | /* |
191 | * FC Virtual Port Attributes |
192 | * |
193 | * This structure exists for each FC port is a virtual FC port. Virtual |
194 | * ports share the physical link with the Physical port. Each virtual |
195 | * ports has a unique presense on the SAN, and may be instantiated via |
196 | * NPIV, Virtual Fabrics, or via additional ALPAs. As the vport is a |
197 | * unique presense, each vport has it's own view of the fabric, |
198 | * authentication privilege, and priorities. |
199 | * |
200 | * A virtual port may support 1 or more FC4 roles. Typically it is a |
201 | * FCP Initiator. It could be a FCP Target, or exist sole for an IP over FC |
202 | * roles. FC port attributes for the vport will be reported on any |
203 | * fc_host class object allocated for an FCP Initiator. |
204 | * |
205 | * -- |
206 | * |
207 | * Fixed attributes are not expected to change. The driver is |
208 | * expected to set these values after receiving the fc_vport structure |
209 | * via the vport_create() call from the transport. |
210 | * The transport fully manages all get functions w/o driver interaction. |
211 | * |
212 | * Dynamic attributes are expected to change. The driver participates |
213 | * in all get/set operations via functions provided by the driver. |
214 | * |
215 | * Private attributes are transport-managed values. They are fully |
216 | * managed by the transport w/o driver interaction. |
217 | */ |
218 | |
219 | struct fc_vport { |
220 | /* Fixed Attributes */ |
221 | |
222 | /* Dynamic Attributes */ |
223 | |
224 | /* Private (Transport-managed) Attributes */ |
225 | enum fc_vport_state vport_state; |
226 | enum fc_vport_state vport_last_state; |
227 | u64 node_name; |
228 | u64 port_name; |
229 | u32 roles; |
230 | u32 vport_id; /* Admin Identifier for the vport */ |
231 | enum fc_port_type vport_type; |
232 | char symbolic_name[FC_VPORT_SYMBOLIC_NAMELEN]; |
233 | |
234 | /* exported data */ |
235 | void *dd_data; /* Used for driver-specific storage */ |
236 | |
237 | /* internal data */ |
238 | struct Scsi_Host *shost; /* Physical Port Parent */ |
239 | unsigned int channel; |
240 | u32 number; |
241 | u8 flags; |
242 | struct list_head peers; |
243 | struct device dev; |
244 | struct work_struct vport_delete_work; |
245 | } __attribute__((aligned(sizeof(unsigned long)))); |
246 | |
247 | /* bit field values for struct fc_vport "flags" field: */ |
248 | #define FC_VPORT_CREATING 0x01 |
249 | #define FC_VPORT_DELETING 0x02 |
250 | #define FC_VPORT_DELETED 0x04 |
251 | #define FC_VPORT_DEL 0x06 /* Any DELETE state */ |
252 | |
253 | #define dev_to_vport(d) \ |
254 | container_of(d, struct fc_vport, dev) |
255 | #define transport_class_to_vport(dev) \ |
256 | dev_to_vport(dev->parent) |
257 | #define vport_to_shost(v) \ |
258 | (v->shost) |
259 | #define vport_to_shost_channel(v) \ |
260 | (v->channel) |
261 | #define vport_to_parent(v) \ |
262 | (v->dev.parent) |
263 | |
264 | |
265 | /* Error return codes for vport_create() callback */ |
266 | #define VPCERR_UNSUPPORTED -ENOSYS /* no driver/adapter |
267 | support */ |
268 | #define VPCERR_BAD_WWN -ENOTUNIQ /* driver validation |
269 | of WWNs failed */ |
270 | #define VPCERR_NO_FABRIC_SUPP -EOPNOTSUPP /* Fabric connection |
271 | is loop or the |
272 | Fabric Port does |
273 | not support NPIV */ |
274 | |
275 | /* |
276 | * fc_rport_identifiers: This set of data contains all elements |
277 | * to uniquely identify a remote FC port. The driver uses this data |
278 | * to report the existence of a remote FC port in the topology. Internally, |
279 | * the transport uses this data for attributes and to manage consistent |
280 | * target id bindings. |
281 | */ |
282 | struct fc_rport_identifiers { |
283 | u64 node_name; |
284 | u64 port_name; |
285 | u32 port_id; |
286 | u32 roles; |
287 | }; |
288 | |
289 | |
290 | /* Macro for use in defining Remote Port attributes */ |
291 | #define FC_RPORT_ATTR(_name,_mode,_show,_store) \ |
292 | struct device_attribute dev_attr_rport_##_name = \ |
293 | __ATTR(_name,_mode,_show,_store) |
294 | |
295 | |
296 | /* |
297 | * FC Remote Port Attributes |
298 | * |
299 | * This structure exists for each remote FC port that a LLDD notifies |
300 | * the subsystem of. A remote FC port may or may not be a SCSI Target, |
301 | * also be a SCSI initiator, IP endpoint, etc. As such, the remote |
302 | * port is considered a separate entity, independent of "role" (such |
303 | * as scsi target). |
304 | * |
305 | * -- |
306 | * |
307 | * Attributes are based on HBAAPI V2.0 definitions. Only those |
308 | * attributes that are determinable by the local port (aka Host) |
309 | * are contained. |
310 | * |
311 | * Fixed attributes are not expected to change. The driver is |
312 | * expected to set these values after successfully calling |
313 | * fc_remote_port_add(). The transport fully manages all get functions |
314 | * w/o driver interaction. |
315 | * |
316 | * Dynamic attributes are expected to change. The driver participates |
317 | * in all get/set operations via functions provided by the driver. |
318 | * |
319 | * Private attributes are transport-managed values. They are fully |
320 | * managed by the transport w/o driver interaction. |
321 | */ |
322 | |
323 | struct fc_rport { /* aka fc_starget_attrs */ |
324 | /* Fixed Attributes */ |
325 | u32 maxframe_size; |
326 | u32 supported_classes; |
327 | |
328 | /* Dynamic Attributes */ |
329 | u32 dev_loss_tmo; /* Remote Port loss timeout in seconds. */ |
330 | |
331 | /* Private (Transport-managed) Attributes */ |
332 | u64 node_name; |
333 | u64 port_name; |
334 | u32 port_id; |
335 | u32 roles; |
336 | enum fc_port_state port_state; /* Will only be ONLINE or UNKNOWN */ |
337 | u32 scsi_target_id; |
338 | u32 fast_io_fail_tmo; |
339 | |
340 | /* exported data */ |
341 | void *dd_data; /* Used for driver-specific storage */ |
342 | |
343 | /* internal data */ |
344 | unsigned int channel; |
345 | u32 number; |
346 | u8 flags; |
347 | struct list_head peers; |
348 | struct device dev; |
349 | struct delayed_work dev_loss_work; |
350 | struct work_struct scan_work; |
351 | struct delayed_work fail_io_work; |
352 | struct work_struct stgt_delete_work; |
353 | struct work_struct rport_delete_work; |
354 | struct request_queue *rqst_q; /* bsg support */ |
355 | } __attribute__((aligned(sizeof(unsigned long)))); |
356 | |
357 | /* bit field values for struct fc_rport "flags" field: */ |
358 | #define FC_RPORT_DEVLOSS_PENDING 0x01 |
359 | #define FC_RPORT_SCAN_PENDING 0x02 |
360 | #define FC_RPORT_FAST_FAIL_TIMEDOUT 0x04 |
361 | #define FC_RPORT_DEVLOSS_CALLBK_DONE 0x08 |
362 | |
363 | #define dev_to_rport(d) \ |
364 | container_of(d, struct fc_rport, dev) |
365 | #define transport_class_to_rport(dev) \ |
366 | dev_to_rport(dev->parent) |
367 | #define rport_to_shost(r) \ |
368 | dev_to_shost(r->dev.parent) |
369 | |
370 | /* |
371 | * FC SCSI Target Attributes |
372 | * |
373 | * The SCSI Target is considered an extention of a remote port (as |
374 | * a remote port can be more than a SCSI Target). Within the scsi |
375 | * subsystem, we leave the Target as a separate entity. Doing so |
376 | * provides backward compatibility with prior FC transport api's, |
377 | * and lets remote ports be handled entirely within the FC transport |
378 | * and independently from the scsi subsystem. The drawback is that |
379 | * some data will be duplicated. |
380 | */ |
381 | |
382 | struct fc_starget_attrs { /* aka fc_target_attrs */ |
383 | /* Dynamic Attributes */ |
384 | u64 node_name; |
385 | u64 port_name; |
386 | u32 port_id; |
387 | }; |
388 | |
389 | #define fc_starget_node_name(x) \ |
390 | (((struct fc_starget_attrs *)&(x)->starget_data)->node_name) |
391 | #define fc_starget_port_name(x) \ |
392 | (((struct fc_starget_attrs *)&(x)->starget_data)->port_name) |
393 | #define fc_starget_port_id(x) \ |
394 | (((struct fc_starget_attrs *)&(x)->starget_data)->port_id) |
395 | |
396 | #define starget_to_rport(s) \ |
397 | scsi_is_fc_rport(s->dev.parent) ? dev_to_rport(s->dev.parent) : NULL |
398 | |
399 | |
400 | /* |
401 | * FC Local Port (Host) Statistics |
402 | */ |
403 | |
404 | /* FC Statistics - Following FC HBAAPI v2.0 guidelines */ |
405 | struct fc_host_statistics { |
406 | /* port statistics */ |
407 | u64 seconds_since_last_reset; |
408 | u64 tx_frames; |
409 | u64 tx_words; |
410 | u64 rx_frames; |
411 | u64 rx_words; |
412 | u64 lip_count; |
413 | u64 nos_count; |
414 | u64 error_frames; |
415 | u64 dumped_frames; |
416 | u64 link_failure_count; |
417 | u64 loss_of_sync_count; |
418 | u64 loss_of_signal_count; |
419 | u64 prim_seq_protocol_err_count; |
420 | u64 invalid_tx_word_count; |
421 | u64 invalid_crc_count; |
422 | |
423 | /* fc4 statistics (only FCP supported currently) */ |
424 | u64 fcp_input_requests; |
425 | u64 fcp_output_requests; |
426 | u64 fcp_control_requests; |
427 | u64 fcp_input_megabytes; |
428 | u64 fcp_output_megabytes; |
429 | }; |
430 | |
431 | |
432 | /* |
433 | * FC Event Codes - Polled and Async, following FC HBAAPI v2.0 guidelines |
434 | */ |
435 | |
436 | /* |
437 | * fc_host_event_code: If you alter this, you also need to alter |
438 | * scsi_transport_fc.c (for the ascii descriptions). |
439 | */ |
440 | enum fc_host_event_code { |
441 | FCH_EVT_LIP = 0x1, |
442 | FCH_EVT_LINKUP = 0x2, |
443 | FCH_EVT_LINKDOWN = 0x3, |
444 | FCH_EVT_LIPRESET = 0x4, |
445 | FCH_EVT_RSCN = 0x5, |
446 | FCH_EVT_ADAPTER_CHANGE = 0x103, |
447 | FCH_EVT_PORT_UNKNOWN = 0x200, |
448 | FCH_EVT_PORT_OFFLINE = 0x201, |
449 | FCH_EVT_PORT_ONLINE = 0x202, |
450 | FCH_EVT_PORT_FABRIC = 0x204, |
451 | FCH_EVT_LINK_UNKNOWN = 0x500, |
452 | FCH_EVT_VENDOR_UNIQUE = 0xffff, |
453 | }; |
454 | |
455 | |
456 | /* |
457 | * FC Local Port (Host) Attributes |
458 | * |
459 | * Attributes are based on HBAAPI V2.0 definitions. |
460 | * Note: OSDeviceName is determined by user-space library |
461 | * |
462 | * Fixed attributes are not expected to change. The driver is |
463 | * expected to set these values after successfully calling scsi_add_host(). |
464 | * The transport fully manages all get functions w/o driver interaction. |
465 | * |
466 | * Dynamic attributes are expected to change. The driver participates |
467 | * in all get/set operations via functions provided by the driver. |
468 | * |
469 | * Private attributes are transport-managed values. They are fully |
470 | * managed by the transport w/o driver interaction. |
471 | */ |
472 | |
473 | #define FC_FC4_LIST_SIZE 32 |
474 | #define FC_SYMBOLIC_NAME_SIZE 256 |
475 | #define FC_VERSION_STRING_SIZE 64 |
476 | #define FC_SERIAL_NUMBER_SIZE 80 |
477 | |
478 | struct fc_host_attrs { |
479 | /* Fixed Attributes */ |
480 | u64 node_name; |
481 | u64 port_name; |
482 | u64 permanent_port_name; |
483 | u32 supported_classes; |
484 | u8 supported_fc4s[FC_FC4_LIST_SIZE]; |
485 | u32 supported_speeds; |
486 | u32 maxframe_size; |
487 | u16 max_npiv_vports; |
488 | char serial_number[FC_SERIAL_NUMBER_SIZE]; |
489 | |
490 | /* Dynamic Attributes */ |
491 | u32 port_id; |
492 | enum fc_port_type port_type; |
493 | enum fc_port_state port_state; |
494 | u8 active_fc4s[FC_FC4_LIST_SIZE]; |
495 | u32 speed; |
496 | u64 fabric_name; |
497 | char symbolic_name[FC_SYMBOLIC_NAME_SIZE]; |
498 | char system_hostname[FC_SYMBOLIC_NAME_SIZE]; |
499 | u32 dev_loss_tmo; |
500 | |
501 | /* Private (Transport-managed) Attributes */ |
502 | enum fc_tgtid_binding_type tgtid_bind_type; |
503 | |
504 | /* internal data */ |
505 | struct list_head rports; |
506 | struct list_head rport_bindings; |
507 | struct list_head vports; |
508 | u32 next_rport_number; |
509 | u32 next_target_id; |
510 | u32 next_vport_number; |
511 | u16 npiv_vports_inuse; |
512 | |
513 | /* work queues for rport state manipulation */ |
514 | char work_q_name[20]; |
515 | struct workqueue_struct *work_q; |
516 | char devloss_work_q_name[20]; |
517 | struct workqueue_struct *devloss_work_q; |
518 | |
519 | /* bsg support */ |
520 | struct request_queue *rqst_q; |
521 | }; |
522 | |
523 | #define shost_to_fc_host(x) \ |
524 | ((struct fc_host_attrs *)(x)->shost_data) |
525 | |
526 | #define fc_host_node_name(x) \ |
527 | (((struct fc_host_attrs *)(x)->shost_data)->node_name) |
528 | #define fc_host_port_name(x) \ |
529 | (((struct fc_host_attrs *)(x)->shost_data)->port_name) |
530 | #define fc_host_permanent_port_name(x) \ |
531 | (((struct fc_host_attrs *)(x)->shost_data)->permanent_port_name) |
532 | #define fc_host_supported_classes(x) \ |
533 | (((struct fc_host_attrs *)(x)->shost_data)->supported_classes) |
534 | #define fc_host_supported_fc4s(x) \ |
535 | (((struct fc_host_attrs *)(x)->shost_data)->supported_fc4s) |
536 | #define fc_host_supported_speeds(x) \ |
537 | (((struct fc_host_attrs *)(x)->shost_data)->supported_speeds) |
538 | #define fc_host_maxframe_size(x) \ |
539 | (((struct fc_host_attrs *)(x)->shost_data)->maxframe_size) |
540 | #define fc_host_max_npiv_vports(x) \ |
541 | (((struct fc_host_attrs *)(x)->shost_data)->max_npiv_vports) |
542 | #define fc_host_serial_number(x) \ |
543 | (((struct fc_host_attrs *)(x)->shost_data)->serial_number) |
544 | #define fc_host_port_id(x) \ |
545 | (((struct fc_host_attrs *)(x)->shost_data)->port_id) |
546 | #define fc_host_port_type(x) \ |
547 | (((struct fc_host_attrs *)(x)->shost_data)->port_type) |
548 | #define fc_host_port_state(x) \ |
549 | (((struct fc_host_attrs *)(x)->shost_data)->port_state) |
550 | #define fc_host_active_fc4s(x) \ |
551 | (((struct fc_host_attrs *)(x)->shost_data)->active_fc4s) |
552 | #define fc_host_speed(x) \ |
553 | (((struct fc_host_attrs *)(x)->shost_data)->speed) |
554 | #define fc_host_fabric_name(x) \ |
555 | (((struct fc_host_attrs *)(x)->shost_data)->fabric_name) |
556 | #define fc_host_symbolic_name(x) \ |
557 | (((struct fc_host_attrs *)(x)->shost_data)->symbolic_name) |
558 | #define fc_host_system_hostname(x) \ |
559 | (((struct fc_host_attrs *)(x)->shost_data)->system_hostname) |
560 | #define fc_host_tgtid_bind_type(x) \ |
561 | (((struct fc_host_attrs *)(x)->shost_data)->tgtid_bind_type) |
562 | #define fc_host_rports(x) \ |
563 | (((struct fc_host_attrs *)(x)->shost_data)->rports) |
564 | #define fc_host_rport_bindings(x) \ |
565 | (((struct fc_host_attrs *)(x)->shost_data)->rport_bindings) |
566 | #define fc_host_vports(x) \ |
567 | (((struct fc_host_attrs *)(x)->shost_data)->vports) |
568 | #define fc_host_next_rport_number(x) \ |
569 | (((struct fc_host_attrs *)(x)->shost_data)->next_rport_number) |
570 | #define fc_host_next_target_id(x) \ |
571 | (((struct fc_host_attrs *)(x)->shost_data)->next_target_id) |
572 | #define fc_host_next_vport_number(x) \ |
573 | (((struct fc_host_attrs *)(x)->shost_data)->next_vport_number) |
574 | #define fc_host_npiv_vports_inuse(x) \ |
575 | (((struct fc_host_attrs *)(x)->shost_data)->npiv_vports_inuse) |
576 | #define fc_host_work_q_name(x) \ |
577 | (((struct fc_host_attrs *)(x)->shost_data)->work_q_name) |
578 | #define fc_host_work_q(x) \ |
579 | (((struct fc_host_attrs *)(x)->shost_data)->work_q) |
580 | #define fc_host_devloss_work_q_name(x) \ |
581 | (((struct fc_host_attrs *)(x)->shost_data)->devloss_work_q_name) |
582 | #define fc_host_devloss_work_q(x) \ |
583 | (((struct fc_host_attrs *)(x)->shost_data)->devloss_work_q) |
584 | #define fc_host_dev_loss_tmo(x) \ |
585 | (((struct fc_host_attrs *)(x)->shost_data)->dev_loss_tmo) |
586 | |
587 | |
588 | struct fc_bsg_buffer { |
589 | unsigned int payload_len; |
590 | int sg_cnt; |
591 | struct scatterlist *sg_list; |
592 | }; |
593 | |
594 | /* Values for fc_bsg_job->state_flags (bitflags) */ |
595 | #define FC_RQST_STATE_INPROGRESS 0 |
596 | #define FC_RQST_STATE_DONE 1 |
597 | |
598 | struct fc_bsg_job { |
599 | struct Scsi_Host *shost; |
600 | struct fc_rport *rport; |
601 | struct device *dev; |
602 | struct request *req; |
603 | spinlock_t job_lock; |
604 | unsigned int state_flags; |
605 | unsigned int ref_cnt; |
606 | void (*job_done)(struct fc_bsg_job *); |
607 | |
608 | struct fc_bsg_request *request; |
609 | struct fc_bsg_reply *reply; |
610 | unsigned int request_len; |
611 | unsigned int reply_len; |
612 | /* |
613 | * On entry : reply_len indicates the buffer size allocated for |
614 | * the reply. |
615 | * |
616 | * Upon completion : the message handler must set reply_len |
617 | * to indicates the size of the reply to be returned to the |
618 | * caller. |
619 | */ |
620 | |
621 | /* DMA payloads for the request/response */ |
622 | struct fc_bsg_buffer request_payload; |
623 | struct fc_bsg_buffer reply_payload; |
624 | |
625 | void *dd_data; /* Used for driver-specific storage */ |
626 | }; |
627 | |
628 | |
629 | /* The functions by which the transport class and the driver communicate */ |
630 | struct fc_function_template { |
631 | void (*get_rport_dev_loss_tmo)(struct fc_rport *); |
632 | void (*set_rport_dev_loss_tmo)(struct fc_rport *, u32); |
633 | |
634 | void (*get_starget_node_name)(struct scsi_target *); |
635 | void (*get_starget_port_name)(struct scsi_target *); |
636 | void (*get_starget_port_id)(struct scsi_target *); |
637 | |
638 | void (*get_host_port_id)(struct Scsi_Host *); |
639 | void (*get_host_port_type)(struct Scsi_Host *); |
640 | void (*get_host_port_state)(struct Scsi_Host *); |
641 | void (*get_host_active_fc4s)(struct Scsi_Host *); |
642 | void (*get_host_speed)(struct Scsi_Host *); |
643 | void (*get_host_fabric_name)(struct Scsi_Host *); |
644 | void (*get_host_symbolic_name)(struct Scsi_Host *); |
645 | void (*set_host_system_hostname)(struct Scsi_Host *); |
646 | |
647 | struct fc_host_statistics * (*get_fc_host_stats)(struct Scsi_Host *); |
648 | void (*reset_fc_host_stats)(struct Scsi_Host *); |
649 | |
650 | int (*issue_fc_host_lip)(struct Scsi_Host *); |
651 | |
652 | void (*dev_loss_tmo_callbk)(struct fc_rport *); |
653 | void (*terminate_rport_io)(struct fc_rport *); |
654 | |
655 | void (*set_vport_symbolic_name)(struct fc_vport *); |
656 | int (*vport_create)(struct fc_vport *, bool); |
657 | int (*vport_disable)(struct fc_vport *, bool); |
658 | int (*vport_delete)(struct fc_vport *); |
659 | |
660 | /* target-mode drivers' functions */ |
661 | int (* tsk_mgmt_response)(struct Scsi_Host *, u64, u64, int); |
662 | int (* it_nexus_response)(struct Scsi_Host *, u64, int); |
663 | |
664 | /* bsg support */ |
665 | int (*bsg_request)(struct fc_bsg_job *); |
666 | int (*bsg_timeout)(struct fc_bsg_job *); |
667 | |
668 | /* allocation lengths for host-specific data */ |
669 | u32 dd_fcrport_size; |
670 | u32 dd_fcvport_size; |
671 | u32 dd_bsg_size; |
672 | |
673 | /* |
674 | * The driver sets these to tell the transport class it |
675 | * wants the attributes displayed in sysfs. If the show_ flag |
676 | * is not set, the attribute will be private to the transport |
677 | * class |
678 | */ |
679 | |
680 | /* remote port fixed attributes */ |
681 | unsigned long show_rport_maxframe_size:1; |
682 | unsigned long show_rport_supported_classes:1; |
683 | unsigned long show_rport_dev_loss_tmo:1; |
684 | |
685 | /* |
686 | * target dynamic attributes |
687 | * These should all be "1" if the driver uses the remote port |
688 | * add/delete functions (so attributes reflect rport values). |
689 | */ |
690 | unsigned long show_starget_node_name:1; |
691 | unsigned long show_starget_port_name:1; |
692 | unsigned long show_starget_port_id:1; |
693 | |
694 | /* host fixed attributes */ |
695 | unsigned long show_host_node_name:1; |
696 | unsigned long show_host_port_name:1; |
697 | unsigned long show_host_permanent_port_name:1; |
698 | unsigned long show_host_supported_classes:1; |
699 | unsigned long show_host_supported_fc4s:1; |
700 | unsigned long show_host_supported_speeds:1; |
701 | unsigned long show_host_maxframe_size:1; |
702 | unsigned long show_host_serial_number:1; |
703 | /* host dynamic attributes */ |
704 | unsigned long show_host_port_id:1; |
705 | unsigned long show_host_port_type:1; |
706 | unsigned long show_host_port_state:1; |
707 | unsigned long show_host_active_fc4s:1; |
708 | unsigned long show_host_speed:1; |
709 | unsigned long show_host_fabric_name:1; |
710 | unsigned long show_host_symbolic_name:1; |
711 | unsigned long show_host_system_hostname:1; |
712 | |
713 | unsigned long disable_target_scan:1; |
714 | }; |
715 | |
716 | |
717 | /** |
718 | * fc_remote_port_chkready - called to validate the remote port state |
719 | * prior to initiating io to the port. |
720 | * |
721 | * Returns a scsi result code that can be returned by the LLDD. |
722 | * |
723 | * @rport: remote port to be checked |
724 | **/ |
725 | static inline int |
726 | fc_remote_port_chkready(struct fc_rport *rport) |
727 | { |
728 | int result; |
729 | |
730 | switch (rport->port_state) { |
731 | case FC_PORTSTATE_ONLINE: |
732 | if (rport->roles & FC_PORT_ROLE_FCP_TARGET) |
733 | result = 0; |
734 | else if (rport->flags & FC_RPORT_DEVLOSS_PENDING) |
735 | result = DID_IMM_RETRY << 16; |
736 | else |
737 | result = DID_NO_CONNECT << 16; |
738 | break; |
739 | case FC_PORTSTATE_BLOCKED: |
740 | if (rport->flags & FC_RPORT_FAST_FAIL_TIMEDOUT) |
741 | result = DID_TRANSPORT_FAILFAST << 16; |
742 | else |
743 | result = DID_IMM_RETRY << 16; |
744 | break; |
745 | default: |
746 | result = DID_NO_CONNECT << 16; |
747 | break; |
748 | } |
749 | return result; |
750 | } |
751 | |
752 | static inline u64 wwn_to_u64(u8 *wwn) |
753 | { |
754 | return (u64)wwn[0] << 56 | (u64)wwn[1] << 48 | |
755 | (u64)wwn[2] << 40 | (u64)wwn[3] << 32 | |
756 | (u64)wwn[4] << 24 | (u64)wwn[5] << 16 | |
757 | (u64)wwn[6] << 8 | (u64)wwn[7]; |
758 | } |
759 | |
760 | static inline void u64_to_wwn(u64 inm, u8 *wwn) |
761 | { |
762 | wwn[0] = (inm >> 56) & 0xff; |
763 | wwn[1] = (inm >> 48) & 0xff; |
764 | wwn[2] = (inm >> 40) & 0xff; |
765 | wwn[3] = (inm >> 32) & 0xff; |
766 | wwn[4] = (inm >> 24) & 0xff; |
767 | wwn[5] = (inm >> 16) & 0xff; |
768 | wwn[6] = (inm >> 8) & 0xff; |
769 | wwn[7] = inm & 0xff; |
770 | } |
771 | |
772 | /** |
773 | * fc_vport_set_state() - called to set a vport's state. Saves the old state, |
774 | * excepting the transitory states of initializing and sending the ELS |
775 | * traffic to instantiate the vport on the link. |
776 | * |
777 | * Assumes the driver has surrounded this with the proper locking to ensure |
778 | * a coherent state change. |
779 | * |
780 | * @vport: virtual port whose state is changing |
781 | * @new_state: new state |
782 | **/ |
783 | static inline void |
784 | fc_vport_set_state(struct fc_vport *vport, enum fc_vport_state new_state) |
785 | { |
786 | if ((new_state != FC_VPORT_UNKNOWN) && |
787 | (new_state != FC_VPORT_INITIALIZING)) |
788 | vport->vport_last_state = vport->vport_state; |
789 | vport->vport_state = new_state; |
790 | } |
791 | |
792 | struct scsi_transport_template *fc_attach_transport( |
793 | struct fc_function_template *); |
794 | void fc_release_transport(struct scsi_transport_template *); |
795 | void fc_remove_host(struct Scsi_Host *); |
796 | struct fc_rport *fc_remote_port_add(struct Scsi_Host *shost, |
797 | int channel, struct fc_rport_identifiers *ids); |
798 | void fc_remote_port_delete(struct fc_rport *rport); |
799 | void fc_remote_port_rolechg(struct fc_rport *rport, u32 roles); |
800 | int scsi_is_fc_rport(const struct device *); |
801 | u32 fc_get_event_number(void); |
802 | void fc_host_post_event(struct Scsi_Host *shost, u32 event_number, |
803 | enum fc_host_event_code event_code, u32 event_data); |
804 | void fc_host_post_vendor_event(struct Scsi_Host *shost, u32 event_number, |
805 | u32 data_len, char * data_buf, u64 vendor_id); |
806 | /* Note: when specifying vendor_id to fc_host_post_vendor_event() |
807 | * be sure to read the Vendor Type and ID formatting requirements |
808 | * specified in scsi_netlink.h |
809 | */ |
810 | struct fc_vport *fc_vport_create(struct Scsi_Host *shost, int channel, |
811 | struct fc_vport_identifiers *); |
812 | int fc_vport_terminate(struct fc_vport *vport); |
813 | int fc_block_scsi_eh(struct scsi_cmnd *cmnd); |
814 | |
815 | #endif /* SCSI_TRANSPORT_FC_H */ |
816 |
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