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
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;
37 * FC Port definitions - Following FC HBAAPI guidelines
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.
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
53 * fc_port_type: If you alter this, you also need to alter scsi_transport_fc.c
54 * (for the ascii descriptions).
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 */
69 * fc_port_state: If you alter this, you also need to alter scsi_transport_fc.c
70 * (for the ascii descriptions).
74 FC_PORTSTATE_NOTPRESENT,
76 FC_PORTSTATE_OFFLINE, /* User has taken Port Offline */
78 FC_PORTSTATE_BYPASSED,
79 FC_PORTSTATE_DIAGNOSTICS,
80 FC_PORTSTATE_LINKDOWN,
82 FC_PORTSTATE_LOOPBACK,
88 * fc_vport_state: If you alter this, you also need to alter
89 * scsi_transport_fc.c (for the ascii descriptions).
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,
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).
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
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).
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_10GBIT 4
130 #define FC_PORTSPEED_4GBIT 8
131 #define FC_PORTSPEED_8GBIT 0x10
132 #define FC_PORTSPEED_16GBIT 0x20
133 #define FC_PORTSPEED_32GBIT 0x40
134 #define FC_PORTSPEED_20GBIT 0x80
135 #define FC_PORTSPEED_40GBIT 0x100
136 #define FC_PORTSPEED_50GBIT 0x200
137 #define FC_PORTSPEED_100GBIT 0x400
138 #define FC_PORTSPEED_25GBIT 0x800
139 #define FC_PORTSPEED_NOT_NEGOTIATED (1 << 15) /* Speed not established */
142 * fc_tgtid_binding_type: If you alter this, you also need to alter
143 * scsi_transport_fc.c (for the ascii descriptions).
145 enum fc_tgtid_binding_type {
147 FC_TGTID_BIND_BY_WWPN,
148 FC_TGTID_BIND_BY_WWNN,
154 * Note: values are not enumerated, as they can be "or'd" together
155 * for reporting (e.g. report roles). If you alter this list,
156 * you also need to alter scsi_transport_fc.c (for the ascii descriptions).
158 #define FC_PORT_ROLE_UNKNOWN 0x00
159 #define FC_PORT_ROLE_FCP_TARGET 0x01
160 #define FC_PORT_ROLE_FCP_INITIATOR 0x02
161 #define FC_PORT_ROLE_IP_PORT 0x04
163 /* The following are for compatibility */
164 #define FC_RPORT_ROLE_UNKNOWN FC_PORT_ROLE_UNKNOWN
165 #define FC_RPORT_ROLE_FCP_TARGET FC_PORT_ROLE_FCP_TARGET
166 #define FC_RPORT_ROLE_FCP_INITIATOR FC_PORT_ROLE_FCP_INITIATOR
167 #define FC_RPORT_ROLE_IP_PORT FC_PORT_ROLE_IP_PORT
170 /* Macro for use in defining Virtual Port attributes */
171 #define FC_VPORT_ATTR(_name,_mode,_show,_store) \
172 struct device_attribute dev_attr_vport_##_name = \
173 __ATTR(_name,_mode,_show,_store)
176 * fc_vport_identifiers: This set of data contains all elements
177 * to uniquely identify and instantiate a FC virtual port.
180 * symbolic_name: The driver is to append the symbolic_name string data
181 * to the symbolic_node_name data that it generates by default.
182 * the resulting combination should then be registered with the switch.
183 * It is expected that things like Xen may stuff a VM title into
186 #define FC_VPORT_SYMBOLIC_NAMELEN 64
187 struct fc_vport_identifiers {
192 enum fc_port_type vport_type; /* only FC_PORTTYPE_NPIV allowed */
193 char symbolic_name[FC_VPORT_SYMBOLIC_NAMELEN];
197 * FC Virtual Port Attributes
199 * This structure exists for each FC port is a virtual FC port. Virtual
200 * ports share the physical link with the Physical port. Each virtual
201 * ports has a unique presence on the SAN, and may be instantiated via
202 * NPIV, Virtual Fabrics, or via additional ALPAs. As the vport is a
203 * unique presence, each vport has it's own view of the fabric,
204 * authentication privilege, and priorities.
206 * A virtual port may support 1 or more FC4 roles. Typically it is a
207 * FCP Initiator. It could be a FCP Target, or exist sole for an IP over FC
208 * roles. FC port attributes for the vport will be reported on any
209 * fc_host class object allocated for an FCP Initiator.
213 * Fixed attributes are not expected to change. The driver is
214 * expected to set these values after receiving the fc_vport structure
215 * via the vport_create() call from the transport.
216 * The transport fully manages all get functions w/o driver interaction.
218 * Dynamic attributes are expected to change. The driver participates
219 * in all get/set operations via functions provided by the driver.
221 * Private attributes are transport-managed values. They are fully
222 * managed by the transport w/o driver interaction.
226 /* Fixed Attributes */
228 /* Dynamic Attributes */
230 /* Private (Transport-managed) Attributes */
231 enum fc_vport_state vport_state;
232 enum fc_vport_state vport_last_state;
236 u32 vport_id; /* Admin Identifier for the vport */
237 enum fc_port_type vport_type;
238 char symbolic_name[FC_VPORT_SYMBOLIC_NAMELEN];
241 void *dd_data; /* Used for driver-specific storage */
244 struct Scsi_Host *shost; /* Physical Port Parent */
245 unsigned int channel;
248 struct list_head peers;
250 struct work_struct vport_delete_work;
251 } __attribute__((aligned(sizeof(unsigned long))));
253 /* bit field values for struct fc_vport "flags" field: */
254 #define FC_VPORT_CREATING 0x01
255 #define FC_VPORT_DELETING 0x02
256 #define FC_VPORT_DELETED 0x04
257 #define FC_VPORT_DEL 0x06 /* Any DELETE state */
259 #define dev_to_vport(d) \
260 container_of(d, struct fc_vport, dev)
261 #define transport_class_to_vport(dev) \
262 dev_to_vport(dev->parent)
263 #define vport_to_shost(v) \
265 #define vport_to_shost_channel(v) \
267 #define vport_to_parent(v) \
271 /* Error return codes for vport_create() callback */
272 #define VPCERR_UNSUPPORTED -ENOSYS /* no driver/adapter
274 #define VPCERR_BAD_WWN -ENOTUNIQ /* driver validation
276 #define VPCERR_NO_FABRIC_SUPP -EOPNOTSUPP /* Fabric connection
282 * fc_rport_identifiers: This set of data contains all elements
283 * to uniquely identify a remote FC port. The driver uses this data
284 * to report the existence of a remote FC port in the topology. Internally,
285 * the transport uses this data for attributes and to manage consistent
286 * target id bindings.
288 struct fc_rport_identifiers {
296 /* Macro for use in defining Remote Port attributes */
297 #define FC_RPORT_ATTR(_name,_mode,_show,_store) \
298 struct device_attribute dev_attr_rport_##_name = \
299 __ATTR(_name,_mode,_show,_store)
303 * FC Remote Port Attributes
305 * This structure exists for each remote FC port that a LLDD notifies
306 * the subsystem of. A remote FC port may or may not be a SCSI Target,
307 * also be a SCSI initiator, IP endpoint, etc. As such, the remote
308 * port is considered a separate entity, independent of "role" (such
313 * Attributes are based on HBAAPI V2.0 definitions. Only those
314 * attributes that are determinable by the local port (aka Host)
317 * Fixed attributes are not expected to change. The driver is
318 * expected to set these values after successfully calling
319 * fc_remote_port_add(). The transport fully manages all get functions
320 * w/o driver interaction.
322 * Dynamic attributes are expected to change. The driver participates
323 * in all get/set operations via functions provided by the driver.
325 * Private attributes are transport-managed values. They are fully
326 * managed by the transport w/o driver interaction.
329 struct fc_rport { /* aka fc_starget_attrs */
330 /* Fixed Attributes */
332 u32 supported_classes;
334 /* Dynamic Attributes */
335 u32 dev_loss_tmo; /* Remote Port loss timeout in seconds. */
337 /* Private (Transport-managed) Attributes */
342 enum fc_port_state port_state; /* Will only be ONLINE or UNKNOWN */
344 u32 fast_io_fail_tmo;
347 void *dd_data; /* Used for driver-specific storage */
350 unsigned int channel;
353 struct list_head peers;
355 struct delayed_work dev_loss_work;
356 struct work_struct scan_work;
357 struct delayed_work fail_io_work;
358 struct work_struct stgt_delete_work;
359 struct work_struct rport_delete_work;
360 struct request_queue *rqst_q; /* bsg support */
361 } __attribute__((aligned(sizeof(unsigned long))));
363 /* bit field values for struct fc_rport "flags" field: */
364 #define FC_RPORT_DEVLOSS_PENDING 0x01
365 #define FC_RPORT_SCAN_PENDING 0x02
366 #define FC_RPORT_FAST_FAIL_TIMEDOUT 0x04
367 #define FC_RPORT_DEVLOSS_CALLBK_DONE 0x08
369 #define dev_to_rport(d) \
370 container_of(d, struct fc_rport, dev)
371 #define transport_class_to_rport(dev) \
372 dev_to_rport(dev->parent)
373 #define rport_to_shost(r) \
374 dev_to_shost(r->dev.parent)
377 * FC SCSI Target Attributes
379 * The SCSI Target is considered an extension of a remote port (as
380 * a remote port can be more than a SCSI Target). Within the scsi
381 * subsystem, we leave the Target as a separate entity. Doing so
382 * provides backward compatibility with prior FC transport api's,
383 * and lets remote ports be handled entirely within the FC transport
384 * and independently from the scsi subsystem. The drawback is that
385 * some data will be duplicated.
388 struct fc_starget_attrs { /* aka fc_target_attrs */
389 /* Dynamic Attributes */
395 #define fc_starget_node_name(x) \
396 (((struct fc_starget_attrs *)&(x)->starget_data)->node_name)
397 #define fc_starget_port_name(x) \
398 (((struct fc_starget_attrs *)&(x)->starget_data)->port_name)
399 #define fc_starget_port_id(x) \
400 (((struct fc_starget_attrs *)&(x)->starget_data)->port_id)
402 #define starget_to_rport(s) \
403 scsi_is_fc_rport(s->dev.parent) ? dev_to_rport(s->dev.parent) : NULL
407 * FC Local Port (Host) Statistics
410 /* FC Statistics - Following FC HBAAPI v2.0 guidelines */
411 struct fc_host_statistics {
412 /* port statistics */
413 u64 seconds_since_last_reset;
422 u64 link_failure_count;
423 u64 loss_of_sync_count;
424 u64 loss_of_signal_count;
425 u64 prim_seq_protocol_err_count;
426 u64 invalid_tx_word_count;
427 u64 invalid_crc_count;
429 /* fc4 statistics (only FCP supported currently) */
430 u64 fcp_input_requests;
431 u64 fcp_output_requests;
432 u64 fcp_control_requests;
433 u64 fcp_input_megabytes;
434 u64 fcp_output_megabytes;
435 u64 fcp_packet_alloc_failures; /* fcp packet allocation failures */
436 u64 fcp_packet_aborts; /* fcp packet aborted */
437 u64 fcp_frame_alloc_failures; /* fcp frame allocation failures */
439 /* fc exches statistics */
440 u64 fc_no_free_exch; /* no free exch memory */
441 u64 fc_no_free_exch_xid; /* no free exch id */
442 u64 fc_xid_not_found; /* exch not found for a response */
443 u64 fc_xid_busy; /* exch exist for new a request */
444 u64 fc_seq_not_found; /* seq is not found for exchange */
445 u64 fc_non_bls_resp; /* a non BLS response frame with
446 a sequence responder in new exch */
451 * FC Event Codes - Polled and Async, following FC HBAAPI v2.0 guidelines
455 * fc_host_event_code: If you alter this, you also need to alter
456 * scsi_transport_fc.c (for the ascii descriptions).
458 enum fc_host_event_code {
460 FCH_EVT_LINKUP = 0x2,
461 FCH_EVT_LINKDOWN = 0x3,
462 FCH_EVT_LIPRESET = 0x4,
464 FCH_EVT_ADAPTER_CHANGE = 0x103,
465 FCH_EVT_PORT_UNKNOWN = 0x200,
466 FCH_EVT_PORT_OFFLINE = 0x201,
467 FCH_EVT_PORT_ONLINE = 0x202,
468 FCH_EVT_PORT_FABRIC = 0x204,
469 FCH_EVT_LINK_UNKNOWN = 0x500,
470 FCH_EVT_VENDOR_UNIQUE = 0xffff,
475 * FC Local Port (Host) Attributes
477 * Attributes are based on HBAAPI V2.0 definitions.
478 * Note: OSDeviceName is determined by user-space library
480 * Fixed attributes are not expected to change. The driver is
481 * expected to set these values after successfully calling scsi_add_host().
482 * The transport fully manages all get functions w/o driver interaction.
484 * Dynamic attributes are expected to change. The driver participates
485 * in all get/set operations via functions provided by the driver.
487 * Private attributes are transport-managed values. They are fully
488 * managed by the transport w/o driver interaction.
491 #define FC_FC4_LIST_SIZE 32
492 #define FC_SYMBOLIC_NAME_SIZE 256
493 #define FC_VERSION_STRING_SIZE 64
494 #define FC_SERIAL_NUMBER_SIZE 80
496 struct fc_host_attrs {
497 /* Fixed Attributes */
500 u64 permanent_port_name;
501 u32 supported_classes;
502 u8 supported_fc4s[FC_FC4_LIST_SIZE];
503 u32 supported_speeds;
506 char serial_number[FC_SERIAL_NUMBER_SIZE];
507 char manufacturer[FC_SERIAL_NUMBER_SIZE];
508 char model[FC_SYMBOLIC_NAME_SIZE];
509 char model_description[FC_SYMBOLIC_NAME_SIZE];
510 char hardware_version[FC_VERSION_STRING_SIZE];
511 char driver_version[FC_VERSION_STRING_SIZE];
512 char firmware_version[FC_VERSION_STRING_SIZE];
513 char optionrom_version[FC_VERSION_STRING_SIZE];
515 /* Dynamic Attributes */
517 enum fc_port_type port_type;
518 enum fc_port_state port_state;
519 u8 active_fc4s[FC_FC4_LIST_SIZE];
522 char symbolic_name[FC_SYMBOLIC_NAME_SIZE];
523 char system_hostname[FC_SYMBOLIC_NAME_SIZE];
526 /* Private (Transport-managed) Attributes */
527 enum fc_tgtid_binding_type tgtid_bind_type;
530 struct list_head rports;
531 struct list_head rport_bindings;
532 struct list_head vports;
533 u32 next_rport_number;
535 u32 next_vport_number;
536 u16 npiv_vports_inuse;
538 /* work queues for rport state manipulation */
539 char work_q_name[20];
540 struct workqueue_struct *work_q;
541 char devloss_work_q_name[20];
542 struct workqueue_struct *devloss_work_q;
545 struct request_queue *rqst_q;
548 #define shost_to_fc_host(x) \
549 ((struct fc_host_attrs *)(x)->shost_data)
551 #define fc_host_node_name(x) \
552 (((struct fc_host_attrs *)(x)->shost_data)->node_name)
553 #define fc_host_port_name(x) \
554 (((struct fc_host_attrs *)(x)->shost_data)->port_name)
555 #define fc_host_permanent_port_name(x) \
556 (((struct fc_host_attrs *)(x)->shost_data)->permanent_port_name)
557 #define fc_host_supported_classes(x) \
558 (((struct fc_host_attrs *)(x)->shost_data)->supported_classes)
559 #define fc_host_supported_fc4s(x) \
560 (((struct fc_host_attrs *)(x)->shost_data)->supported_fc4s)
561 #define fc_host_supported_speeds(x) \
562 (((struct fc_host_attrs *)(x)->shost_data)->supported_speeds)
563 #define fc_host_maxframe_size(x) \
564 (((struct fc_host_attrs *)(x)->shost_data)->maxframe_size)
565 #define fc_host_max_npiv_vports(x) \
566 (((struct fc_host_attrs *)(x)->shost_data)->max_npiv_vports)
567 #define fc_host_serial_number(x) \
568 (((struct fc_host_attrs *)(x)->shost_data)->serial_number)
569 #define fc_host_manufacturer(x) \
570 (((struct fc_host_attrs *)(x)->shost_data)->manufacturer)
571 #define fc_host_model(x) \
572 (((struct fc_host_attrs *)(x)->shost_data)->model)
573 #define fc_host_model_description(x) \
574 (((struct fc_host_attrs *)(x)->shost_data)->model_description)
575 #define fc_host_hardware_version(x) \
576 (((struct fc_host_attrs *)(x)->shost_data)->hardware_version)
577 #define fc_host_driver_version(x) \
578 (((struct fc_host_attrs *)(x)->shost_data)->driver_version)
579 #define fc_host_firmware_version(x) \
580 (((struct fc_host_attrs *)(x)->shost_data)->firmware_version)
581 #define fc_host_optionrom_version(x) \
582 (((struct fc_host_attrs *)(x)->shost_data)->optionrom_version)
583 #define fc_host_port_id(x) \
584 (((struct fc_host_attrs *)(x)->shost_data)->port_id)
585 #define fc_host_port_type(x) \
586 (((struct fc_host_attrs *)(x)->shost_data)->port_type)
587 #define fc_host_port_state(x) \
588 (((struct fc_host_attrs *)(x)->shost_data)->port_state)
589 #define fc_host_active_fc4s(x) \
590 (((struct fc_host_attrs *)(x)->shost_data)->active_fc4s)
591 #define fc_host_speed(x) \
592 (((struct fc_host_attrs *)(x)->shost_data)->speed)
593 #define fc_host_fabric_name(x) \
594 (((struct fc_host_attrs *)(x)->shost_data)->fabric_name)
595 #define fc_host_symbolic_name(x) \
596 (((struct fc_host_attrs *)(x)->shost_data)->symbolic_name)
597 #define fc_host_system_hostname(x) \
598 (((struct fc_host_attrs *)(x)->shost_data)->system_hostname)
599 #define fc_host_tgtid_bind_type(x) \
600 (((struct fc_host_attrs *)(x)->shost_data)->tgtid_bind_type)
601 #define fc_host_rports(x) \
602 (((struct fc_host_attrs *)(x)->shost_data)->rports)
603 #define fc_host_rport_bindings(x) \
604 (((struct fc_host_attrs *)(x)->shost_data)->rport_bindings)
605 #define fc_host_vports(x) \
606 (((struct fc_host_attrs *)(x)->shost_data)->vports)
607 #define fc_host_next_rport_number(x) \
608 (((struct fc_host_attrs *)(x)->shost_data)->next_rport_number)
609 #define fc_host_next_target_id(x) \
610 (((struct fc_host_attrs *)(x)->shost_data)->next_target_id)
611 #define fc_host_next_vport_number(x) \
612 (((struct fc_host_attrs *)(x)->shost_data)->next_vport_number)
613 #define fc_host_npiv_vports_inuse(x) \
614 (((struct fc_host_attrs *)(x)->shost_data)->npiv_vports_inuse)
615 #define fc_host_work_q_name(x) \
616 (((struct fc_host_attrs *)(x)->shost_data)->work_q_name)
617 #define fc_host_work_q(x) \
618 (((struct fc_host_attrs *)(x)->shost_data)->work_q)
619 #define fc_host_devloss_work_q_name(x) \
620 (((struct fc_host_attrs *)(x)->shost_data)->devloss_work_q_name)
621 #define fc_host_devloss_work_q(x) \
622 (((struct fc_host_attrs *)(x)->shost_data)->devloss_work_q)
623 #define fc_host_dev_loss_tmo(x) \
624 (((struct fc_host_attrs *)(x)->shost_data)->dev_loss_tmo)
627 struct fc_bsg_buffer {
628 unsigned int payload_len;
630 struct scatterlist *sg_list;
633 /* Values for fc_bsg_job->state_flags (bitflags) */
634 #define FC_RQST_STATE_INPROGRESS 0
635 #define FC_RQST_STATE_DONE 1
638 struct Scsi_Host *shost;
639 struct fc_rport *rport;
643 unsigned int state_flags;
644 unsigned int ref_cnt;
645 void (*job_done)(struct fc_bsg_job *);
647 struct fc_bsg_request *request;
648 struct fc_bsg_reply *reply;
649 unsigned int request_len;
650 unsigned int reply_len;
652 * On entry : reply_len indicates the buffer size allocated for
655 * Upon completion : the message handler must set reply_len
656 * to indicates the size of the reply to be returned to the
660 /* DMA payloads for the request/response */
661 struct fc_bsg_buffer request_payload;
662 struct fc_bsg_buffer reply_payload;
664 void *dd_data; /* Used for driver-specific storage */
668 /* The functions by which the transport class and the driver communicate */
669 struct fc_function_template {
670 void (*get_rport_dev_loss_tmo)(struct fc_rport *);
671 void (*set_rport_dev_loss_tmo)(struct fc_rport *, u32);
673 void (*get_starget_node_name)(struct scsi_target *);
674 void (*get_starget_port_name)(struct scsi_target *);
675 void (*get_starget_port_id)(struct scsi_target *);
677 void (*get_host_port_id)(struct Scsi_Host *);
678 void (*get_host_port_type)(struct Scsi_Host *);
679 void (*get_host_port_state)(struct Scsi_Host *);
680 void (*get_host_active_fc4s)(struct Scsi_Host *);
681 void (*get_host_speed)(struct Scsi_Host *);
682 void (*get_host_fabric_name)(struct Scsi_Host *);
683 void (*get_host_symbolic_name)(struct Scsi_Host *);
684 void (*set_host_system_hostname)(struct Scsi_Host *);
686 struct fc_host_statistics * (*get_fc_host_stats)(struct Scsi_Host *);
687 void (*reset_fc_host_stats)(struct Scsi_Host *);
689 int (*issue_fc_host_lip)(struct Scsi_Host *);
691 void (*dev_loss_tmo_callbk)(struct fc_rport *);
692 void (*terminate_rport_io)(struct fc_rport *);
694 void (*set_vport_symbolic_name)(struct fc_vport *);
695 int (*vport_create)(struct fc_vport *, bool);
696 int (*vport_disable)(struct fc_vport *, bool);
697 int (*vport_delete)(struct fc_vport *);
699 /* target-mode drivers' functions */
700 int (* tsk_mgmt_response)(struct Scsi_Host *, u64, u64, int);
701 int (* it_nexus_response)(struct Scsi_Host *, u64, int);
704 int (*bsg_request)(struct fc_bsg_job *);
705 int (*bsg_timeout)(struct fc_bsg_job *);
707 /* allocation lengths for host-specific data */
713 * The driver sets these to tell the transport class it
714 * wants the attributes displayed in sysfs. If the show_ flag
715 * is not set, the attribute will be private to the transport
719 /* remote port fixed attributes */
720 unsigned long show_rport_maxframe_size:1;
721 unsigned long show_rport_supported_classes:1;
722 unsigned long show_rport_dev_loss_tmo:1;
725 * target dynamic attributes
726 * These should all be "1" if the driver uses the remote port
727 * add/delete functions (so attributes reflect rport values).
729 unsigned long show_starget_node_name:1;
730 unsigned long show_starget_port_name:1;
731 unsigned long show_starget_port_id:1;
733 /* host fixed attributes */
734 unsigned long show_host_node_name:1;
735 unsigned long show_host_port_name:1;
736 unsigned long show_host_permanent_port_name:1;
737 unsigned long show_host_supported_classes:1;
738 unsigned long show_host_supported_fc4s:1;
739 unsigned long show_host_supported_speeds:1;
740 unsigned long show_host_maxframe_size:1;
741 unsigned long show_host_serial_number:1;
742 unsigned long show_host_manufacturer:1;
743 unsigned long show_host_model:1;
744 unsigned long show_host_model_description:1;
745 unsigned long show_host_hardware_version:1;
746 unsigned long show_host_driver_version:1;
747 unsigned long show_host_firmware_version:1;
748 unsigned long show_host_optionrom_version:1;
749 /* host dynamic attributes */
750 unsigned long show_host_port_id:1;
751 unsigned long show_host_port_type:1;
752 unsigned long show_host_port_state:1;
753 unsigned long show_host_active_fc4s:1;
754 unsigned long show_host_speed:1;
755 unsigned long show_host_fabric_name:1;
756 unsigned long show_host_symbolic_name:1;
757 unsigned long show_host_system_hostname:1;
759 unsigned long disable_target_scan:1;
764 * fc_remote_port_chkready - called to validate the remote port state
765 * prior to initiating io to the port.
767 * Returns a scsi result code that can be returned by the LLDD.
769 * @rport: remote port to be checked
772 fc_remote_port_chkready(struct fc_rport *rport)
776 switch (rport->port_state) {
777 case FC_PORTSTATE_ONLINE:
778 if (rport->roles & FC_PORT_ROLE_FCP_TARGET)
780 else if (rport->flags & FC_RPORT_DEVLOSS_PENDING)
781 result = DID_IMM_RETRY << 16;
783 result = DID_NO_CONNECT << 16;
785 case FC_PORTSTATE_BLOCKED:
786 if (rport->flags & FC_RPORT_FAST_FAIL_TIMEDOUT)
787 result = DID_TRANSPORT_FAILFAST << 16;
789 result = DID_IMM_RETRY << 16;
792 result = DID_NO_CONNECT << 16;
798 static inline u64 wwn_to_u64(u8 *wwn)
800 return (u64)wwn[0] << 56 | (u64)wwn[1] << 48 |
801 (u64)wwn[2] << 40 | (u64)wwn[3] << 32 |
802 (u64)wwn[4] << 24 | (u64)wwn[5] << 16 |
803 (u64)wwn[6] << 8 | (u64)wwn[7];
806 static inline void u64_to_wwn(u64 inm, u8 *wwn)
808 wwn[0] = (inm >> 56) & 0xff;
809 wwn[1] = (inm >> 48) & 0xff;
810 wwn[2] = (inm >> 40) & 0xff;
811 wwn[3] = (inm >> 32) & 0xff;
812 wwn[4] = (inm >> 24) & 0xff;
813 wwn[5] = (inm >> 16) & 0xff;
814 wwn[6] = (inm >> 8) & 0xff;
819 * fc_vport_set_state() - called to set a vport's state. Saves the old state,
820 * excepting the transitory states of initializing and sending the ELS
821 * traffic to instantiate the vport on the link.
823 * Assumes the driver has surrounded this with the proper locking to ensure
824 * a coherent state change.
826 * @vport: virtual port whose state is changing
827 * @new_state: new state
830 fc_vport_set_state(struct fc_vport *vport, enum fc_vport_state new_state)
832 if ((new_state != FC_VPORT_UNKNOWN) &&
833 (new_state != FC_VPORT_INITIALIZING))
834 vport->vport_last_state = vport->vport_state;
835 vport->vport_state = new_state;
838 struct scsi_transport_template *fc_attach_transport(
839 struct fc_function_template *);
840 void fc_release_transport(struct scsi_transport_template *);
841 void fc_remove_host(struct Scsi_Host *);
842 struct fc_rport *fc_remote_port_add(struct Scsi_Host *shost,
843 int channel, struct fc_rport_identifiers *ids);
844 void fc_remote_port_delete(struct fc_rport *rport);
845 void fc_remote_port_rolechg(struct fc_rport *rport, u32 roles);
846 int scsi_is_fc_rport(const struct device *);
847 u32 fc_get_event_number(void);
848 void fc_host_post_event(struct Scsi_Host *shost, u32 event_number,
849 enum fc_host_event_code event_code, u32 event_data);
850 void fc_host_post_vendor_event(struct Scsi_Host *shost, u32 event_number,
851 u32 data_len, char * data_buf, u64 vendor_id);
852 /* Note: when specifying vendor_id to fc_host_post_vendor_event()
853 * be sure to read the Vendor Type and ID formatting requirements
854 * specified in scsi_netlink.h
856 struct fc_vport *fc_vport_create(struct Scsi_Host *shost, int channel,
857 struct fc_vport_identifiers *);
858 int fc_vport_terminate(struct fc_vport *vport);
859 int fc_block_scsi_eh(struct scsi_cmnd *cmnd);
861 #endif /* SCSI_TRANSPORT_FC_H */