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_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 */
136 * fc_tgtid_binding_type: If you alter this, you also need to alter
137 * scsi_transport_fc.c (for the ascii descriptions).
139 enum fc_tgtid_binding_type {
141 FC_TGTID_BIND_BY_WWPN,
142 FC_TGTID_BIND_BY_WWNN,
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).
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
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
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)
170 * fc_vport_identifiers: This set of data contains all elements
171 * to uniquely identify and instantiate a FC virtual port.
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
180 #define FC_VPORT_SYMBOLIC_NAMELEN 64
181 struct fc_vport_identifiers {
186 enum fc_port_type vport_type; /* only FC_PORTTYPE_NPIV allowed */
187 char symbolic_name[FC_VPORT_SYMBOLIC_NAMELEN];
191 * FC Virtual Port Attributes
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.
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.
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.
212 * Dynamic attributes are expected to change. The driver participates
213 * in all get/set operations via functions provided by the driver.
215 * Private attributes are transport-managed values. They are fully
216 * managed by the transport w/o driver interaction.
220 /* Fixed Attributes */
222 /* Dynamic Attributes */
224 /* Private (Transport-managed) Attributes */
225 enum fc_vport_state vport_state;
226 enum fc_vport_state vport_last_state;
230 u32 vport_id; /* Admin Identifier for the vport */
231 enum fc_port_type vport_type;
232 char symbolic_name[FC_VPORT_SYMBOLIC_NAMELEN];
235 void *dd_data; /* Used for driver-specific storage */
238 struct Scsi_Host *shost; /* Physical Port Parent */
239 unsigned int channel;
242 struct list_head peers;
244 struct work_struct vport_delete_work;
245 } __attribute__((aligned(sizeof(unsigned long))));
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 */
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) \
259 #define vport_to_shost_channel(v) \
261 #define vport_to_parent(v) \
265 /* Error return codes for vport_create() callback */
266 #define VPCERR_UNSUPPORTED -ENOSYS /* no driver/adapter
268 #define VPCERR_BAD_WWN -ENOTUNIQ /* driver validation
270 #define VPCERR_NO_FABRIC_SUPP -EOPNOTSUPP /* Fabric connection
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.
282 struct fc_rport_identifiers {
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)
297 * FC Remote Port Attributes
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
307 * Attributes are based on HBAAPI V2.0 definitions. Only those
308 * attributes that are determinable by the local port (aka Host)
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.
316 * Dynamic attributes are expected to change. The driver participates
317 * in all get/set operations via functions provided by the driver.
319 * Private attributes are transport-managed values. They are fully
320 * managed by the transport w/o driver interaction.
323 struct fc_rport { /* aka fc_starget_attrs */
324 /* Fixed Attributes */
326 u32 supported_classes;
328 /* Dynamic Attributes */
329 u32 dev_loss_tmo; /* Remote Port loss timeout in seconds. */
331 /* Private (Transport-managed) Attributes */
336 enum fc_port_state port_state; /* Will only be ONLINE or UNKNOWN */
338 u32 fast_io_fail_tmo;
341 void *dd_data; /* Used for driver-specific storage */
344 unsigned int channel;
347 struct list_head peers;
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))));
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
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)
371 * FC SCSI Target Attributes
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.
382 struct fc_starget_attrs { /* aka fc_target_attrs */
383 /* Dynamic Attributes */
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)
396 #define starget_to_rport(s) \
397 scsi_is_fc_rport(s->dev.parent) ? dev_to_rport(s->dev.parent) : NULL
401 * FC Local Port (Host) Statistics
404 /* FC Statistics - Following FC HBAAPI v2.0 guidelines */
405 struct fc_host_statistics {
406 /* port statistics */
407 u64 seconds_since_last_reset;
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;
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;
433 * FC Event Codes - Polled and Async, following FC HBAAPI v2.0 guidelines
437 * fc_host_event_code: If you alter this, you also need to alter
438 * scsi_transport_fc.c (for the ascii descriptions).
440 enum fc_host_event_code {
442 FCH_EVT_LINKUP = 0x2,
443 FCH_EVT_LINKDOWN = 0x3,
444 FCH_EVT_LIPRESET = 0x4,
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,
457 * FC Local Port (Host) Attributes
459 * Attributes are based on HBAAPI V2.0 definitions.
460 * Note: OSDeviceName is determined by user-space library
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.
466 * Dynamic attributes are expected to change. The driver participates
467 * in all get/set operations via functions provided by the driver.
469 * Private attributes are transport-managed values. They are fully
470 * managed by the transport w/o driver interaction.
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
478 struct fc_host_attrs {
479 /* Fixed Attributes */
482 u64 permanent_port_name;
483 u32 supported_classes;
484 u8 supported_fc4s[FC_FC4_LIST_SIZE];
485 u32 supported_speeds;
488 char serial_number[FC_SERIAL_NUMBER_SIZE];
490 /* Dynamic Attributes */
492 enum fc_port_type port_type;
493 enum fc_port_state port_state;
494 u8 active_fc4s[FC_FC4_LIST_SIZE];
497 char symbolic_name[FC_SYMBOLIC_NAME_SIZE];
498 char system_hostname[FC_SYMBOLIC_NAME_SIZE];
500 /* Private (Transport-managed) Attributes */
501 enum fc_tgtid_binding_type tgtid_bind_type;
504 struct list_head rports;
505 struct list_head rport_bindings;
506 struct list_head vports;
507 u32 next_rport_number;
509 u32 next_vport_number;
510 u16 npiv_vports_inuse;
512 /* work queues for rport state manipulation */
513 char work_q_name[20];
514 struct workqueue_struct *work_q;
515 char devloss_work_q_name[20];
516 struct workqueue_struct *devloss_work_q;
519 struct request_queue *rqst_q;
522 #define shost_to_fc_host(x) \
523 ((struct fc_host_attrs *)(x)->shost_data)
525 #define fc_host_node_name(x) \
526 (((struct fc_host_attrs *)(x)->shost_data)->node_name)
527 #define fc_host_port_name(x) \
528 (((struct fc_host_attrs *)(x)->shost_data)->port_name)
529 #define fc_host_permanent_port_name(x) \
530 (((struct fc_host_attrs *)(x)->shost_data)->permanent_port_name)
531 #define fc_host_supported_classes(x) \
532 (((struct fc_host_attrs *)(x)->shost_data)->supported_classes)
533 #define fc_host_supported_fc4s(x) \
534 (((struct fc_host_attrs *)(x)->shost_data)->supported_fc4s)
535 #define fc_host_supported_speeds(x) \
536 (((struct fc_host_attrs *)(x)->shost_data)->supported_speeds)
537 #define fc_host_maxframe_size(x) \
538 (((struct fc_host_attrs *)(x)->shost_data)->maxframe_size)
539 #define fc_host_max_npiv_vports(x) \
540 (((struct fc_host_attrs *)(x)->shost_data)->max_npiv_vports)
541 #define fc_host_serial_number(x) \
542 (((struct fc_host_attrs *)(x)->shost_data)->serial_number)
543 #define fc_host_port_id(x) \
544 (((struct fc_host_attrs *)(x)->shost_data)->port_id)
545 #define fc_host_port_type(x) \
546 (((struct fc_host_attrs *)(x)->shost_data)->port_type)
547 #define fc_host_port_state(x) \
548 (((struct fc_host_attrs *)(x)->shost_data)->port_state)
549 #define fc_host_active_fc4s(x) \
550 (((struct fc_host_attrs *)(x)->shost_data)->active_fc4s)
551 #define fc_host_speed(x) \
552 (((struct fc_host_attrs *)(x)->shost_data)->speed)
553 #define fc_host_fabric_name(x) \
554 (((struct fc_host_attrs *)(x)->shost_data)->fabric_name)
555 #define fc_host_symbolic_name(x) \
556 (((struct fc_host_attrs *)(x)->shost_data)->symbolic_name)
557 #define fc_host_system_hostname(x) \
558 (((struct fc_host_attrs *)(x)->shost_data)->system_hostname)
559 #define fc_host_tgtid_bind_type(x) \
560 (((struct fc_host_attrs *)(x)->shost_data)->tgtid_bind_type)
561 #define fc_host_rports(x) \
562 (((struct fc_host_attrs *)(x)->shost_data)->rports)
563 #define fc_host_rport_bindings(x) \
564 (((struct fc_host_attrs *)(x)->shost_data)->rport_bindings)
565 #define fc_host_vports(x) \
566 (((struct fc_host_attrs *)(x)->shost_data)->vports)
567 #define fc_host_next_rport_number(x) \
568 (((struct fc_host_attrs *)(x)->shost_data)->next_rport_number)
569 #define fc_host_next_target_id(x) \
570 (((struct fc_host_attrs *)(x)->shost_data)->next_target_id)
571 #define fc_host_next_vport_number(x) \
572 (((struct fc_host_attrs *)(x)->shost_data)->next_vport_number)
573 #define fc_host_npiv_vports_inuse(x) \
574 (((struct fc_host_attrs *)(x)->shost_data)->npiv_vports_inuse)
575 #define fc_host_work_q_name(x) \
576 (((struct fc_host_attrs *)(x)->shost_data)->work_q_name)
577 #define fc_host_work_q(x) \
578 (((struct fc_host_attrs *)(x)->shost_data)->work_q)
579 #define fc_host_devloss_work_q_name(x) \
580 (((struct fc_host_attrs *)(x)->shost_data)->devloss_work_q_name)
581 #define fc_host_devloss_work_q(x) \
582 (((struct fc_host_attrs *)(x)->shost_data)->devloss_work_q)
585 struct fc_bsg_buffer {
586 unsigned int payload_len;
588 struct scatterlist *sg_list;
591 /* Values for fc_bsg_job->state_flags (bitflags) */
592 #define FC_RQST_STATE_INPROGRESS 0
593 #define FC_RQST_STATE_DONE 1
596 struct Scsi_Host *shost;
597 struct fc_rport *rport;
601 unsigned int state_flags;
602 unsigned int ref_cnt;
603 void (*job_done)(struct fc_bsg_job *);
605 struct fc_bsg_request *request;
606 struct fc_bsg_reply *reply;
607 unsigned int request_len;
608 unsigned int reply_len;
610 * On entry : reply_len indicates the buffer size allocated for
613 * Upon completion : the message handler must set reply_len
614 * to indicates the size of the reply to be returned to the
618 /* DMA payloads for the request/response */
619 struct fc_bsg_buffer request_payload;
620 struct fc_bsg_buffer reply_payload;
622 void *dd_data; /* Used for driver-specific storage */
626 /* The functions by which the transport class and the driver communicate */
627 struct fc_function_template {
628 void (*get_rport_dev_loss_tmo)(struct fc_rport *);
629 void (*set_rport_dev_loss_tmo)(struct fc_rport *, u32);
631 void (*get_starget_node_name)(struct scsi_target *);
632 void (*get_starget_port_name)(struct scsi_target *);
633 void (*get_starget_port_id)(struct scsi_target *);
635 void (*get_host_port_id)(struct Scsi_Host *);
636 void (*get_host_port_type)(struct Scsi_Host *);
637 void (*get_host_port_state)(struct Scsi_Host *);
638 void (*get_host_active_fc4s)(struct Scsi_Host *);
639 void (*get_host_speed)(struct Scsi_Host *);
640 void (*get_host_fabric_name)(struct Scsi_Host *);
641 void (*get_host_symbolic_name)(struct Scsi_Host *);
642 void (*set_host_system_hostname)(struct Scsi_Host *);
644 struct fc_host_statistics * (*get_fc_host_stats)(struct Scsi_Host *);
645 void (*reset_fc_host_stats)(struct Scsi_Host *);
647 int (*issue_fc_host_lip)(struct Scsi_Host *);
649 void (*dev_loss_tmo_callbk)(struct fc_rport *);
650 void (*terminate_rport_io)(struct fc_rport *);
652 void (*set_vport_symbolic_name)(struct fc_vport *);
653 int (*vport_create)(struct fc_vport *, bool);
654 int (*vport_disable)(struct fc_vport *, bool);
655 int (*vport_delete)(struct fc_vport *);
657 /* target-mode drivers' functions */
658 int (* tsk_mgmt_response)(struct Scsi_Host *, u64, u64, int);
659 int (* it_nexus_response)(struct Scsi_Host *, u64, int);
662 int (*bsg_request)(struct fc_bsg_job *);
663 int (*bsg_timeout)(struct fc_bsg_job *);
665 /* allocation lengths for host-specific data */
671 * The driver sets these to tell the transport class it
672 * wants the attributes displayed in sysfs. If the show_ flag
673 * is not set, the attribute will be private to the transport
677 /* remote port fixed attributes */
678 unsigned long show_rport_maxframe_size:1;
679 unsigned long show_rport_supported_classes:1;
680 unsigned long show_rport_dev_loss_tmo:1;
683 * target dynamic attributes
684 * These should all be "1" if the driver uses the remote port
685 * add/delete functions (so attributes reflect rport values).
687 unsigned long show_starget_node_name:1;
688 unsigned long show_starget_port_name:1;
689 unsigned long show_starget_port_id:1;
691 /* host fixed attributes */
692 unsigned long show_host_node_name:1;
693 unsigned long show_host_port_name:1;
694 unsigned long show_host_permanent_port_name:1;
695 unsigned long show_host_supported_classes:1;
696 unsigned long show_host_supported_fc4s:1;
697 unsigned long show_host_supported_speeds:1;
698 unsigned long show_host_maxframe_size:1;
699 unsigned long show_host_serial_number:1;
700 /* host dynamic attributes */
701 unsigned long show_host_port_id:1;
702 unsigned long show_host_port_type:1;
703 unsigned long show_host_port_state:1;
704 unsigned long show_host_active_fc4s:1;
705 unsigned long show_host_speed:1;
706 unsigned long show_host_fabric_name:1;
707 unsigned long show_host_symbolic_name:1;
708 unsigned long show_host_system_hostname:1;
710 unsigned long disable_target_scan:1;
715 * fc_remote_port_chkready - called to validate the remote port state
716 * prior to initiating io to the port.
718 * Returns a scsi result code that can be returned by the LLDD.
720 * @rport: remote port to be checked
723 fc_remote_port_chkready(struct fc_rport *rport)
727 switch (rport->port_state) {
728 case FC_PORTSTATE_ONLINE:
729 if (rport->roles & FC_PORT_ROLE_FCP_TARGET)
731 else if (rport->flags & FC_RPORT_DEVLOSS_PENDING)
732 result = DID_IMM_RETRY << 16;
734 result = DID_NO_CONNECT << 16;
736 case FC_PORTSTATE_BLOCKED:
737 if (rport->flags & FC_RPORT_FAST_FAIL_TIMEDOUT)
738 result = DID_TRANSPORT_FAILFAST << 16;
740 result = DID_IMM_RETRY << 16;
743 result = DID_NO_CONNECT << 16;
749 static inline u64 wwn_to_u64(u8 *wwn)
751 return (u64)wwn[0] << 56 | (u64)wwn[1] << 48 |
752 (u64)wwn[2] << 40 | (u64)wwn[3] << 32 |
753 (u64)wwn[4] << 24 | (u64)wwn[5] << 16 |
754 (u64)wwn[6] << 8 | (u64)wwn[7];
757 static inline void u64_to_wwn(u64 inm, u8 *wwn)
759 wwn[0] = (inm >> 56) & 0xff;
760 wwn[1] = (inm >> 48) & 0xff;
761 wwn[2] = (inm >> 40) & 0xff;
762 wwn[3] = (inm >> 32) & 0xff;
763 wwn[4] = (inm >> 24) & 0xff;
764 wwn[5] = (inm >> 16) & 0xff;
765 wwn[6] = (inm >> 8) & 0xff;
770 * fc_vport_set_state() - called to set a vport's state. Saves the old state,
771 * excepting the transitory states of initializing and sending the ELS
772 * traffic to instantiate the vport on the link.
774 * Assumes the driver has surrounded this with the proper locking to ensure
775 * a coherent state change.
777 * @vport: virtual port whose state is changing
778 * @new_state: new state
781 fc_vport_set_state(struct fc_vport *vport, enum fc_vport_state new_state)
783 if ((new_state != FC_VPORT_UNKNOWN) &&
784 (new_state != FC_VPORT_INITIALIZING))
785 vport->vport_last_state = vport->vport_state;
786 vport->vport_state = new_state;
789 struct scsi_transport_template *fc_attach_transport(
790 struct fc_function_template *);
791 void fc_release_transport(struct scsi_transport_template *);
792 void fc_remove_host(struct Scsi_Host *);
793 struct fc_rport *fc_remote_port_add(struct Scsi_Host *shost,
794 int channel, struct fc_rport_identifiers *ids);
795 void fc_remote_port_delete(struct fc_rport *rport);
796 void fc_remote_port_rolechg(struct fc_rport *rport, u32 roles);
797 int scsi_is_fc_rport(const struct device *);
798 u32 fc_get_event_number(void);
799 void fc_host_post_event(struct Scsi_Host *shost, u32 event_number,
800 enum fc_host_event_code event_code, u32 event_data);
801 void fc_host_post_vendor_event(struct Scsi_Host *shost, u32 event_number,
802 u32 data_len, char * data_buf, u64 vendor_id);
803 /* Note: when specifying vendor_id to fc_host_post_vendor_event()
804 * be sure to read the Vendor Type and ID formatting requirements
805 * specified in scsi_netlink.h
807 struct fc_vport *fc_vport_create(struct Scsi_Host *shost, int channel,
808 struct fc_vport_identifiers *);
809 int fc_vport_terminate(struct fc_vport *vport);
810 int fc_block_scsi_eh(struct scsi_cmnd *cmnd);
812 #endif /* SCSI_TRANSPORT_FC_H */