fs: use kmem_cache_zalloc instead
[pv_ops_mirror.git] / include / scsi / scsi_transport_fc.h
blobe466d886e19283621c2e6af4f6087ce7eafa2d1e
1 /*
2 * FiberChannel transport specific attributes exported to sysfs.
4 * Copyright (c) 2003 Silicon Graphics, Inc. All rights reserved.
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.
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.
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
20 * ========
22 * Copyright (C) 2004-2007 James Smart, Emulex Corporation
23 * Rewrite for host, target, device, and remote port attributes,
24 * statistics, and service functions...
27 #ifndef SCSI_TRANSPORT_FC_H
28 #define SCSI_TRANSPORT_FC_H
30 #include <linux/sched.h>
31 #include <scsi/scsi.h>
32 #include <scsi/scsi_netlink.h>
34 struct scsi_transport_template;
38 * FC Port definitions - Following FC HBAAPI guidelines
40 * Note: Not all binary values for the different fields match HBAAPI.
41 * Instead, we use densely packed ordinal values or enums.
42 * We get away with this as we never present the actual binary values
43 * externally. For sysfs, we always present the string that describes
44 * the value. Thus, an admin doesn't need a magic HBAAPI decoder ring
45 * to understand the values. The HBAAPI user-space library is free to
46 * convert the strings into the HBAAPI-specified binary values.
48 * Note: Not all HBAAPI-defined values are contained in the definitions
49 * below. Those not appropriate to an fc_host (e.g. FCP initiator) have
50 * been removed.
54 * fc_port_type: If you alter this, you also need to alter scsi_transport_fc.c
55 * (for the ascii descriptions).
57 enum fc_port_type {
58 FC_PORTTYPE_UNKNOWN,
59 FC_PORTTYPE_OTHER,
60 FC_PORTTYPE_NOTPRESENT,
61 FC_PORTTYPE_NPORT, /* Attached to FPort */
62 FC_PORTTYPE_NLPORT, /* (Public) Loop w/ FLPort */
63 FC_PORTTYPE_LPORT, /* (Private) Loop w/o FLPort */
64 FC_PORTTYPE_PTP, /* Point to Point w/ another NPort */
65 FC_PORTTYPE_NPIV, /* VPORT based on NPIV */
70 * fc_port_state: If you alter this, you also need to alter scsi_transport_fc.c
71 * (for the ascii descriptions).
73 enum fc_port_state {
74 FC_PORTSTATE_UNKNOWN,
75 FC_PORTSTATE_NOTPRESENT,
76 FC_PORTSTATE_ONLINE,
77 FC_PORTSTATE_OFFLINE, /* User has taken Port Offline */
78 FC_PORTSTATE_BLOCKED,
79 FC_PORTSTATE_BYPASSED,
80 FC_PORTSTATE_DIAGNOSTICS,
81 FC_PORTSTATE_LINKDOWN,
82 FC_PORTSTATE_ERROR,
83 FC_PORTSTATE_LOOPBACK,
84 FC_PORTSTATE_DELETED,
89 * fc_vport_state: If you alter this, you also need to alter
90 * scsi_transport_fc.c (for the ascii descriptions).
92 enum fc_vport_state {
93 FC_VPORT_UNKNOWN,
94 FC_VPORT_ACTIVE,
95 FC_VPORT_DISABLED,
96 FC_VPORT_LINKDOWN,
97 FC_VPORT_INITIALIZING,
98 FC_VPORT_NO_FABRIC_SUPP,
99 FC_VPORT_NO_FABRIC_RSCS,
100 FC_VPORT_FABRIC_LOGOUT,
101 FC_VPORT_FABRIC_REJ_WWN,
102 FC_VPORT_FAILED,
108 * FC Classes of Service
109 * Note: values are not enumerated, as they can be "or'd" together
110 * for reporting (e.g. report supported_classes). If you alter this list,
111 * you also need to alter scsi_transport_fc.c (for the ascii descriptions).
113 #define FC_COS_UNSPECIFIED 0
114 #define FC_COS_CLASS1 2
115 #define FC_COS_CLASS2 4
116 #define FC_COS_CLASS3 8
117 #define FC_COS_CLASS4 0x10
118 #define FC_COS_CLASS6 0x40
121 * FC Port Speeds
122 * Note: values are not enumerated, as they can be "or'd" together
123 * for reporting (e.g. report supported_speeds). If you alter this list,
124 * you also need to alter scsi_transport_fc.c (for the ascii descriptions).
126 #define FC_PORTSPEED_UNKNOWN 0 /* Unknown - transceiver
127 incapable of reporting */
128 #define FC_PORTSPEED_1GBIT 1
129 #define FC_PORTSPEED_2GBIT 2
130 #define FC_PORTSPEED_4GBIT 4
131 #define FC_PORTSPEED_10GBIT 8
132 #define FC_PORTSPEED_8GBIT 0x10
133 #define FC_PORTSPEED_16GBIT 0x20
134 #define FC_PORTSPEED_NOT_NEGOTIATED (1 << 15) /* Speed not established */
137 * fc_tgtid_binding_type: If you alter this, you also need to alter
138 * scsi_transport_fc.c (for the ascii descriptions).
140 enum fc_tgtid_binding_type {
141 FC_TGTID_BIND_NONE,
142 FC_TGTID_BIND_BY_WWPN,
143 FC_TGTID_BIND_BY_WWNN,
144 FC_TGTID_BIND_BY_ID,
148 * FC Port Roles
149 * Note: values are not enumerated, as they can be "or'd" together
150 * for reporting (e.g. report roles). If you alter this list,
151 * you also need to alter scsi_transport_fc.c (for the ascii descriptions).
153 #define FC_PORT_ROLE_UNKNOWN 0x00
154 #define FC_PORT_ROLE_FCP_TARGET 0x01
155 #define FC_PORT_ROLE_FCP_INITIATOR 0x02
156 #define FC_PORT_ROLE_IP_PORT 0x04
158 /* The following are for compatibility */
159 #define FC_RPORT_ROLE_UNKNOWN FC_PORT_ROLE_UNKNOWN
160 #define FC_RPORT_ROLE_FCP_TARGET FC_PORT_ROLE_FCP_TARGET
161 #define FC_RPORT_ROLE_FCP_INITIATOR FC_PORT_ROLE_FCP_INITIATOR
162 #define FC_RPORT_ROLE_IP_PORT FC_PORT_ROLE_IP_PORT
165 /* Macro for use in defining Virtual Port attributes */
166 #define FC_VPORT_ATTR(_name,_mode,_show,_store) \
167 struct class_device_attribute class_device_attr_vport_##_name = \
168 __ATTR(_name,_mode,_show,_store)
172 * FC Virtual Port Attributes
174 * This structure exists for each FC port is a virtual FC port. Virtual
175 * ports share the physical link with the Physical port. Each virtual
176 * ports has a unique presense on the SAN, and may be instantiated via
177 * NPIV, Virtual Fabrics, or via additional ALPAs. As the vport is a
178 * unique presense, each vport has it's own view of the fabric,
179 * authentication priviledge, and priorities.
181 * A virtual port may support 1 or more FC4 roles. Typically it is a
182 * FCP Initiator. It could be a FCP Target, or exist sole for an IP over FC
183 * roles. FC port attributes for the vport will be reported on any
184 * fc_host class object allocated for an FCP Initiator.
186 * --
188 * Fixed attributes are not expected to change. The driver is
189 * expected to set these values after receiving the fc_vport structure
190 * via the vport_create() call from the transport.
191 * The transport fully manages all get functions w/o driver interaction.
193 * Dynamic attributes are expected to change. The driver participates
194 * in all get/set operations via functions provided by the driver.
196 * Private attributes are transport-managed values. They are fully
197 * managed by the transport w/o driver interaction.
200 #define FC_VPORT_SYMBOLIC_NAMELEN 64
201 struct fc_vport {
202 /* Fixed Attributes */
204 /* Dynamic Attributes */
206 /* Private (Transport-managed) Attributes */
207 enum fc_vport_state vport_state;
208 enum fc_vport_state vport_last_state;
209 u64 node_name;
210 u64 port_name;
211 u32 roles;
212 u32 vport_id; /* Admin Identifier for the vport */
213 enum fc_port_type vport_type;
214 char symbolic_name[FC_VPORT_SYMBOLIC_NAMELEN];
216 /* exported data */
217 void *dd_data; /* Used for driver-specific storage */
219 /* internal data */
220 struct Scsi_Host *shost; /* Physical Port Parent */
221 unsigned int channel;
222 u32 number;
223 u8 flags;
224 struct list_head peers;
225 struct device dev;
226 struct work_struct vport_delete_work;
227 } __attribute__((aligned(sizeof(unsigned long))));
229 /* bit field values for struct fc_vport "flags" field: */
230 #define FC_VPORT_CREATING 0x01
231 #define FC_VPORT_DELETING 0x02
232 #define FC_VPORT_DELETED 0x04
233 #define FC_VPORT_DEL 0x06 /* Any DELETE state */
235 #define dev_to_vport(d) \
236 container_of(d, struct fc_vport, dev)
237 #define transport_class_to_vport(classdev) \
238 dev_to_vport(classdev->dev)
239 #define vport_to_shost(v) \
240 (v->shost)
241 #define vport_to_shost_channel(v) \
242 (v->channel)
243 #define vport_to_parent(v) \
244 (v->dev.parent)
247 /* Error return codes for vport_create() callback */
248 #define VPCERR_UNSUPPORTED -ENOSYS /* no driver/adapter
249 support */
250 #define VPCERR_BAD_WWN -ENOTUNIQ /* driver validation
251 of WWNs failed */
252 #define VPCERR_NO_FABRIC_SUPP -EOPNOTSUPP /* Fabric connection
253 is loop or the
254 Fabric Port does
255 not support NPIV */
258 * fc_rport_identifiers: This set of data contains all elements
259 * to uniquely identify a remote FC port. The driver uses this data
260 * to report the existence of a remote FC port in the topology. Internally,
261 * the transport uses this data for attributes and to manage consistent
262 * target id bindings.
264 struct fc_rport_identifiers {
265 u64 node_name;
266 u64 port_name;
267 u32 port_id;
268 u32 roles;
272 /* Macro for use in defining Remote Port attributes */
273 #define FC_RPORT_ATTR(_name,_mode,_show,_store) \
274 struct class_device_attribute class_device_attr_rport_##_name = \
275 __ATTR(_name,_mode,_show,_store)
279 * FC Remote Port Attributes
281 * This structure exists for each remote FC port that a LLDD notifies
282 * the subsystem of. A remote FC port may or may not be a SCSI Target,
283 * also be a SCSI initiator, IP endpoint, etc. As such, the remote
284 * port is considered a separate entity, independent of "role" (such
285 * as scsi target).
287 * --
289 * Attributes are based on HBAAPI V2.0 definitions. Only those
290 * attributes that are determinable by the local port (aka Host)
291 * are contained.
293 * Fixed attributes are not expected to change. The driver is
294 * expected to set these values after successfully calling
295 * fc_remote_port_add(). The transport fully manages all get functions
296 * w/o driver interaction.
298 * Dynamic attributes are expected to change. The driver participates
299 * in all get/set operations via functions provided by the driver.
301 * Private attributes are transport-managed values. They are fully
302 * managed by the transport w/o driver interaction.
305 struct fc_rport { /* aka fc_starget_attrs */
306 /* Fixed Attributes */
307 u32 maxframe_size;
308 u32 supported_classes;
310 /* Dynamic Attributes */
311 u32 dev_loss_tmo; /* Remote Port loss timeout in seconds. */
313 /* Private (Transport-managed) Attributes */
314 u64 node_name;
315 u64 port_name;
316 u32 port_id;
317 u32 roles;
318 enum fc_port_state port_state; /* Will only be ONLINE or UNKNOWN */
319 u32 scsi_target_id;
320 u32 fast_io_fail_tmo;
322 /* exported data */
323 void *dd_data; /* Used for driver-specific storage */
325 /* internal data */
326 unsigned int channel;
327 u32 number;
328 u8 flags;
329 struct list_head peers;
330 struct device dev;
331 struct delayed_work dev_loss_work;
332 struct work_struct scan_work;
333 struct delayed_work fail_io_work;
334 struct work_struct stgt_delete_work;
335 struct work_struct rport_delete_work;
336 } __attribute__((aligned(sizeof(unsigned long))));
338 /* bit field values for struct fc_rport "flags" field: */
339 #define FC_RPORT_DEVLOSS_PENDING 0x01
340 #define FC_RPORT_SCAN_PENDING 0x02
342 #define dev_to_rport(d) \
343 container_of(d, struct fc_rport, dev)
344 #define transport_class_to_rport(classdev) \
345 dev_to_rport(classdev->dev)
346 #define rport_to_shost(r) \
347 dev_to_shost(r->dev.parent)
350 * FC SCSI Target Attributes
352 * The SCSI Target is considered an extention of a remote port (as
353 * a remote port can be more than a SCSI Target). Within the scsi
354 * subsystem, we leave the Target as a separate entity. Doing so
355 * provides backward compatibility with prior FC transport api's,
356 * and lets remote ports be handled entirely within the FC transport
357 * and independently from the scsi subsystem. The drawback is that
358 * some data will be duplicated.
361 struct fc_starget_attrs { /* aka fc_target_attrs */
362 /* Dynamic Attributes */
363 u64 node_name;
364 u64 port_name;
365 u32 port_id;
368 #define fc_starget_node_name(x) \
369 (((struct fc_starget_attrs *)&(x)->starget_data)->node_name)
370 #define fc_starget_port_name(x) \
371 (((struct fc_starget_attrs *)&(x)->starget_data)->port_name)
372 #define fc_starget_port_id(x) \
373 (((struct fc_starget_attrs *)&(x)->starget_data)->port_id)
375 #define starget_to_rport(s) \
376 scsi_is_fc_rport(s->dev.parent) ? dev_to_rport(s->dev.parent) : NULL
380 * FC Local Port (Host) Statistics
383 /* FC Statistics - Following FC HBAAPI v2.0 guidelines */
384 struct fc_host_statistics {
385 /* port statistics */
386 u64 seconds_since_last_reset;
387 u64 tx_frames;
388 u64 tx_words;
389 u64 rx_frames;
390 u64 rx_words;
391 u64 lip_count;
392 u64 nos_count;
393 u64 error_frames;
394 u64 dumped_frames;
395 u64 link_failure_count;
396 u64 loss_of_sync_count;
397 u64 loss_of_signal_count;
398 u64 prim_seq_protocol_err_count;
399 u64 invalid_tx_word_count;
400 u64 invalid_crc_count;
402 /* fc4 statistics (only FCP supported currently) */
403 u64 fcp_input_requests;
404 u64 fcp_output_requests;
405 u64 fcp_control_requests;
406 u64 fcp_input_megabytes;
407 u64 fcp_output_megabytes;
412 * FC Event Codes - Polled and Async, following FC HBAAPI v2.0 guidelines
416 * fc_host_event_code: If you alter this, you also need to alter
417 * scsi_transport_fc.c (for the ascii descriptions).
419 enum fc_host_event_code {
420 FCH_EVT_LIP = 0x1,
421 FCH_EVT_LINKUP = 0x2,
422 FCH_EVT_LINKDOWN = 0x3,
423 FCH_EVT_LIPRESET = 0x4,
424 FCH_EVT_RSCN = 0x5,
425 FCH_EVT_ADAPTER_CHANGE = 0x103,
426 FCH_EVT_PORT_UNKNOWN = 0x200,
427 FCH_EVT_PORT_OFFLINE = 0x201,
428 FCH_EVT_PORT_ONLINE = 0x202,
429 FCH_EVT_PORT_FABRIC = 0x204,
430 FCH_EVT_LINK_UNKNOWN = 0x500,
431 FCH_EVT_VENDOR_UNIQUE = 0xffff,
436 * FC Local Port (Host) Attributes
438 * Attributes are based on HBAAPI V2.0 definitions.
439 * Note: OSDeviceName is determined by user-space library
441 * Fixed attributes are not expected to change. The driver is
442 * expected to set these values after successfully calling scsi_add_host().
443 * The transport fully manages all get functions w/o driver interaction.
445 * Dynamic attributes are expected to change. The driver participates
446 * in all get/set operations via functions provided by the driver.
448 * Private attributes are transport-managed values. They are fully
449 * managed by the transport w/o driver interaction.
452 #define FC_FC4_LIST_SIZE 32
453 #define FC_SYMBOLIC_NAME_SIZE 256
454 #define FC_VERSION_STRING_SIZE 64
455 #define FC_SERIAL_NUMBER_SIZE 80
457 struct fc_host_attrs {
458 /* Fixed Attributes */
459 u64 node_name;
460 u64 port_name;
461 u64 permanent_port_name;
462 u32 supported_classes;
463 u8 supported_fc4s[FC_FC4_LIST_SIZE];
464 u32 supported_speeds;
465 u32 maxframe_size;
466 u16 max_npiv_vports;
467 char serial_number[FC_SERIAL_NUMBER_SIZE];
469 /* Dynamic Attributes */
470 u32 port_id;
471 enum fc_port_type port_type;
472 enum fc_port_state port_state;
473 u8 active_fc4s[FC_FC4_LIST_SIZE];
474 u32 speed;
475 u64 fabric_name;
476 char symbolic_name[FC_SYMBOLIC_NAME_SIZE];
477 char system_hostname[FC_SYMBOLIC_NAME_SIZE];
479 /* Private (Transport-managed) Attributes */
480 enum fc_tgtid_binding_type tgtid_bind_type;
482 /* internal data */
483 struct list_head rports;
484 struct list_head rport_bindings;
485 struct list_head vports;
486 u32 next_rport_number;
487 u32 next_target_id;
488 u32 next_vport_number;
489 u16 npiv_vports_inuse;
491 /* work queues for rport state manipulation */
492 char work_q_name[KOBJ_NAME_LEN];
493 struct workqueue_struct *work_q;
494 char devloss_work_q_name[KOBJ_NAME_LEN];
495 struct workqueue_struct *devloss_work_q;
498 #define shost_to_fc_host(x) \
499 ((struct fc_host_attrs *)(x)->shost_data)
501 #define fc_host_node_name(x) \
502 (((struct fc_host_attrs *)(x)->shost_data)->node_name)
503 #define fc_host_port_name(x) \
504 (((struct fc_host_attrs *)(x)->shost_data)->port_name)
505 #define fc_host_permanent_port_name(x) \
506 (((struct fc_host_attrs *)(x)->shost_data)->permanent_port_name)
507 #define fc_host_supported_classes(x) \
508 (((struct fc_host_attrs *)(x)->shost_data)->supported_classes)
509 #define fc_host_supported_fc4s(x) \
510 (((struct fc_host_attrs *)(x)->shost_data)->supported_fc4s)
511 #define fc_host_supported_speeds(x) \
512 (((struct fc_host_attrs *)(x)->shost_data)->supported_speeds)
513 #define fc_host_maxframe_size(x) \
514 (((struct fc_host_attrs *)(x)->shost_data)->maxframe_size)
515 #define fc_host_max_npiv_vports(x) \
516 (((struct fc_host_attrs *)(x)->shost_data)->max_npiv_vports)
517 #define fc_host_serial_number(x) \
518 (((struct fc_host_attrs *)(x)->shost_data)->serial_number)
519 #define fc_host_port_id(x) \
520 (((struct fc_host_attrs *)(x)->shost_data)->port_id)
521 #define fc_host_port_type(x) \
522 (((struct fc_host_attrs *)(x)->shost_data)->port_type)
523 #define fc_host_port_state(x) \
524 (((struct fc_host_attrs *)(x)->shost_data)->port_state)
525 #define fc_host_active_fc4s(x) \
526 (((struct fc_host_attrs *)(x)->shost_data)->active_fc4s)
527 #define fc_host_speed(x) \
528 (((struct fc_host_attrs *)(x)->shost_data)->speed)
529 #define fc_host_fabric_name(x) \
530 (((struct fc_host_attrs *)(x)->shost_data)->fabric_name)
531 #define fc_host_symbolic_name(x) \
532 (((struct fc_host_attrs *)(x)->shost_data)->symbolic_name)
533 #define fc_host_system_hostname(x) \
534 (((struct fc_host_attrs *)(x)->shost_data)->system_hostname)
535 #define fc_host_tgtid_bind_type(x) \
536 (((struct fc_host_attrs *)(x)->shost_data)->tgtid_bind_type)
537 #define fc_host_rports(x) \
538 (((struct fc_host_attrs *)(x)->shost_data)->rports)
539 #define fc_host_rport_bindings(x) \
540 (((struct fc_host_attrs *)(x)->shost_data)->rport_bindings)
541 #define fc_host_vports(x) \
542 (((struct fc_host_attrs *)(x)->shost_data)->vports)
543 #define fc_host_next_rport_number(x) \
544 (((struct fc_host_attrs *)(x)->shost_data)->next_rport_number)
545 #define fc_host_next_target_id(x) \
546 (((struct fc_host_attrs *)(x)->shost_data)->next_target_id)
547 #define fc_host_next_vport_number(x) \
548 (((struct fc_host_attrs *)(x)->shost_data)->next_vport_number)
549 #define fc_host_npiv_vports_inuse(x) \
550 (((struct fc_host_attrs *)(x)->shost_data)->npiv_vports_inuse)
551 #define fc_host_work_q_name(x) \
552 (((struct fc_host_attrs *)(x)->shost_data)->work_q_name)
553 #define fc_host_work_q(x) \
554 (((struct fc_host_attrs *)(x)->shost_data)->work_q)
555 #define fc_host_devloss_work_q_name(x) \
556 (((struct fc_host_attrs *)(x)->shost_data)->devloss_work_q_name)
557 #define fc_host_devloss_work_q(x) \
558 (((struct fc_host_attrs *)(x)->shost_data)->devloss_work_q)
561 /* The functions by which the transport class and the driver communicate */
562 struct fc_function_template {
563 void (*get_rport_dev_loss_tmo)(struct fc_rport *);
564 void (*set_rport_dev_loss_tmo)(struct fc_rport *, u32);
566 void (*get_starget_node_name)(struct scsi_target *);
567 void (*get_starget_port_name)(struct scsi_target *);
568 void (*get_starget_port_id)(struct scsi_target *);
570 void (*get_host_port_id)(struct Scsi_Host *);
571 void (*get_host_port_type)(struct Scsi_Host *);
572 void (*get_host_port_state)(struct Scsi_Host *);
573 void (*get_host_active_fc4s)(struct Scsi_Host *);
574 void (*get_host_speed)(struct Scsi_Host *);
575 void (*get_host_fabric_name)(struct Scsi_Host *);
576 void (*get_host_symbolic_name)(struct Scsi_Host *);
577 void (*set_host_system_hostname)(struct Scsi_Host *);
579 struct fc_host_statistics * (*get_fc_host_stats)(struct Scsi_Host *);
580 void (*reset_fc_host_stats)(struct Scsi_Host *);
582 int (*issue_fc_host_lip)(struct Scsi_Host *);
584 void (*dev_loss_tmo_callbk)(struct fc_rport *);
585 void (*terminate_rport_io)(struct fc_rport *);
587 void (*set_vport_symbolic_name)(struct fc_vport *);
588 int (*vport_create)(struct fc_vport *, bool);
589 int (*vport_disable)(struct fc_vport *, bool);
590 int (*vport_delete)(struct fc_vport *);
592 /* target-mode drivers' functions */
593 int (* tsk_mgmt_response)(struct Scsi_Host *, u64, u64, int);
594 int (* it_nexus_response)(struct Scsi_Host *, u64, int);
596 /* allocation lengths for host-specific data */
597 u32 dd_fcrport_size;
598 u32 dd_fcvport_size;
601 * The driver sets these to tell the transport class it
602 * wants the attributes displayed in sysfs. If the show_ flag
603 * is not set, the attribute will be private to the transport
604 * class
607 /* remote port fixed attributes */
608 unsigned long show_rport_maxframe_size:1;
609 unsigned long show_rport_supported_classes:1;
610 unsigned long show_rport_dev_loss_tmo:1;
613 * target dynamic attributes
614 * These should all be "1" if the driver uses the remote port
615 * add/delete functions (so attributes reflect rport values).
617 unsigned long show_starget_node_name:1;
618 unsigned long show_starget_port_name:1;
619 unsigned long show_starget_port_id:1;
621 /* host fixed attributes */
622 unsigned long show_host_node_name:1;
623 unsigned long show_host_port_name:1;
624 unsigned long show_host_permanent_port_name:1;
625 unsigned long show_host_supported_classes:1;
626 unsigned long show_host_supported_fc4s:1;
627 unsigned long show_host_supported_speeds:1;
628 unsigned long show_host_maxframe_size:1;
629 unsigned long show_host_serial_number:1;
630 /* host dynamic attributes */
631 unsigned long show_host_port_id:1;
632 unsigned long show_host_port_type:1;
633 unsigned long show_host_port_state:1;
634 unsigned long show_host_active_fc4s:1;
635 unsigned long show_host_speed:1;
636 unsigned long show_host_fabric_name:1;
637 unsigned long show_host_symbolic_name:1;
638 unsigned long show_host_system_hostname:1;
640 unsigned long disable_target_scan:1;
645 * fc_remote_port_chkready - called to validate the remote port state
646 * prior to initiating io to the port.
648 * Returns a scsi result code that can be returned by the LLDD.
650 * @rport: remote port to be checked
652 static inline int
653 fc_remote_port_chkready(struct fc_rport *rport)
655 int result;
657 switch (rport->port_state) {
658 case FC_PORTSTATE_ONLINE:
659 if (rport->roles & FC_PORT_ROLE_FCP_TARGET)
660 result = 0;
661 else if (rport->flags & FC_RPORT_DEVLOSS_PENDING)
662 result = DID_IMM_RETRY << 16;
663 else
664 result = DID_NO_CONNECT << 16;
665 break;
666 case FC_PORTSTATE_BLOCKED:
667 result = DID_IMM_RETRY << 16;
668 break;
669 default:
670 result = DID_NO_CONNECT << 16;
671 break;
673 return result;
676 static inline u64 wwn_to_u64(u8 *wwn)
678 return (u64)wwn[0] << 56 | (u64)wwn[1] << 48 |
679 (u64)wwn[2] << 40 | (u64)wwn[3] << 32 |
680 (u64)wwn[4] << 24 | (u64)wwn[5] << 16 |
681 (u64)wwn[6] << 8 | (u64)wwn[7];
684 static inline void u64_to_wwn(u64 inm, u8 *wwn)
686 wwn[0] = (inm >> 56) & 0xff;
687 wwn[1] = (inm >> 48) & 0xff;
688 wwn[2] = (inm >> 40) & 0xff;
689 wwn[3] = (inm >> 32) & 0xff;
690 wwn[4] = (inm >> 24) & 0xff;
691 wwn[5] = (inm >> 16) & 0xff;
692 wwn[6] = (inm >> 8) & 0xff;
693 wwn[7] = inm & 0xff;
697 * fc_vport_set_state() - called to set a vport's state. Saves the old state,
698 * excepting the transitory states of initializing and sending the ELS
699 * traffic to instantiate the vport on the link.
701 * Assumes the driver has surrounded this with the proper locking to ensure
702 * a coherent state change.
704 * @vport: virtual port whose state is changing
705 * @new_state: new state
707 static inline void
708 fc_vport_set_state(struct fc_vport *vport, enum fc_vport_state new_state)
710 if ((new_state != FC_VPORT_UNKNOWN) &&
711 (new_state != FC_VPORT_INITIALIZING))
712 vport->vport_last_state = vport->vport_state;
713 vport->vport_state = new_state;
717 struct scsi_transport_template *fc_attach_transport(
718 struct fc_function_template *);
719 void fc_release_transport(struct scsi_transport_template *);
720 void fc_remove_host(struct Scsi_Host *);
721 struct fc_rport *fc_remote_port_add(struct Scsi_Host *shost,
722 int channel, struct fc_rport_identifiers *ids);
723 void fc_remote_port_delete(struct fc_rport *rport);
724 void fc_remote_port_rolechg(struct fc_rport *rport, u32 roles);
725 int scsi_is_fc_rport(const struct device *);
726 u32 fc_get_event_number(void);
727 void fc_host_post_event(struct Scsi_Host *shost, u32 event_number,
728 enum fc_host_event_code event_code, u32 event_data);
729 void fc_host_post_vendor_event(struct Scsi_Host *shost, u32 event_number,
730 u32 data_len, char * data_buf, u64 vendor_id);
731 /* Note: when specifying vendor_id to fc_host_post_vendor_event()
732 * be sure to read the Vendor Type and ID formatting requirements
733 * specified in scsi_netlink.h
735 int fc_vport_terminate(struct fc_vport *vport);
737 #endif /* SCSI_TRANSPORT_FC_H */