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...
28 #include <linux/module.h>
29 #include <linux/init.h>
30 #include <scsi/scsi_device.h>
31 #include <scsi/scsi_host.h>
32 #include <scsi/scsi_transport.h>
33 #include <scsi/scsi_transport_fc.h>
34 #include <scsi/scsi_cmnd.h>
35 #include <linux/netlink.h>
36 #include <net/netlink.h>
37 #include <scsi/scsi_netlink_fc.h>
38 #include "scsi_priv.h"
39 #include "scsi_transport_fc_internal.h"
41 static int fc_queue_work(struct Scsi_Host
*, struct work_struct
*);
42 static void fc_vport_sched_delete(struct work_struct
*work
);
43 static int fc_vport_setup(struct Scsi_Host
*shost
, int channel
,
44 struct device
*pdev
, struct fc_vport_identifiers
*ids
,
45 struct fc_vport
**vport
);
48 * Redefine so that we can have same named attributes in the
49 * sdev/starget/host objects.
51 #define FC_DEVICE_ATTR(_prefix,_name,_mode,_show,_store) \
52 struct device_attribute device_attr_##_prefix##_##_name = \
53 __ATTR(_name,_mode,_show,_store)
55 #define fc_enum_name_search(title, table_type, table) \
56 static const char *get_fc_##title##_name(enum table_type table_key) \
61 for (i = 0; i < ARRAY_SIZE(table); i++) { \
62 if (table[i].value == table_key) { \
63 name = table[i].name; \
70 #define fc_enum_name_match(title, table_type, table) \
71 static int get_fc_##title##_match(const char *table_key, \
72 enum table_type *value) \
76 for (i = 0; i < ARRAY_SIZE(table); i++) { \
77 if (strncmp(table_key, table[i].name, \
78 table[i].matchlen) == 0) { \
79 *value = table[i].value; \
80 return 0; /* success */ \
83 return 1; /* failure */ \
87 /* Convert fc_port_type values to ascii string name */
89 enum fc_port_type value
;
91 } fc_port_type_names
[] = {
92 { FC_PORTTYPE_UNKNOWN
, "Unknown" },
93 { FC_PORTTYPE_OTHER
, "Other" },
94 { FC_PORTTYPE_NOTPRESENT
, "Not Present" },
95 { FC_PORTTYPE_NPORT
, "NPort (fabric via point-to-point)" },
96 { FC_PORTTYPE_NLPORT
, "NLPort (fabric via loop)" },
97 { FC_PORTTYPE_LPORT
, "LPort (private loop)" },
98 { FC_PORTTYPE_PTP
, "Point-To-Point (direct nport connection" },
99 { FC_PORTTYPE_NPIV
, "NPIV VPORT" },
101 fc_enum_name_search(port_type
, fc_port_type
, fc_port_type_names
)
102 #define FC_PORTTYPE_MAX_NAMELEN 50
104 /* Reuse fc_port_type enum function for vport_type */
105 #define get_fc_vport_type_name get_fc_port_type_name
108 /* Convert fc_host_event_code values to ascii string name */
109 static const struct {
110 enum fc_host_event_code value
;
112 } fc_host_event_code_names
[] = {
113 { FCH_EVT_LIP
, "lip" },
114 { FCH_EVT_LINKUP
, "link_up" },
115 { FCH_EVT_LINKDOWN
, "link_down" },
116 { FCH_EVT_LIPRESET
, "lip_reset" },
117 { FCH_EVT_RSCN
, "rscn" },
118 { FCH_EVT_ADAPTER_CHANGE
, "adapter_chg" },
119 { FCH_EVT_PORT_UNKNOWN
, "port_unknown" },
120 { FCH_EVT_PORT_ONLINE
, "port_online" },
121 { FCH_EVT_PORT_OFFLINE
, "port_offline" },
122 { FCH_EVT_PORT_FABRIC
, "port_fabric" },
123 { FCH_EVT_LINK_UNKNOWN
, "link_unknown" },
124 { FCH_EVT_VENDOR_UNIQUE
, "vendor_unique" },
126 fc_enum_name_search(host_event_code
, fc_host_event_code
,
127 fc_host_event_code_names
)
128 #define FC_HOST_EVENT_CODE_MAX_NAMELEN 30
131 /* Convert fc_port_state values to ascii string name */
133 enum fc_port_state value
;
135 } fc_port_state_names
[] = {
136 { FC_PORTSTATE_UNKNOWN
, "Unknown" },
137 { FC_PORTSTATE_NOTPRESENT
, "Not Present" },
138 { FC_PORTSTATE_ONLINE
, "Online" },
139 { FC_PORTSTATE_OFFLINE
, "Offline" },
140 { FC_PORTSTATE_BLOCKED
, "Blocked" },
141 { FC_PORTSTATE_BYPASSED
, "Bypassed" },
142 { FC_PORTSTATE_DIAGNOSTICS
, "Diagnostics" },
143 { FC_PORTSTATE_LINKDOWN
, "Linkdown" },
144 { FC_PORTSTATE_ERROR
, "Error" },
145 { FC_PORTSTATE_LOOPBACK
, "Loopback" },
146 { FC_PORTSTATE_DELETED
, "Deleted" },
148 fc_enum_name_search(port_state
, fc_port_state
, fc_port_state_names
)
149 #define FC_PORTSTATE_MAX_NAMELEN 20
152 /* Convert fc_vport_state values to ascii string name */
154 enum fc_vport_state value
;
156 } fc_vport_state_names
[] = {
157 { FC_VPORT_UNKNOWN
, "Unknown" },
158 { FC_VPORT_ACTIVE
, "Active" },
159 { FC_VPORT_DISABLED
, "Disabled" },
160 { FC_VPORT_LINKDOWN
, "Linkdown" },
161 { FC_VPORT_INITIALIZING
, "Initializing" },
162 { FC_VPORT_NO_FABRIC_SUPP
, "No Fabric Support" },
163 { FC_VPORT_NO_FABRIC_RSCS
, "No Fabric Resources" },
164 { FC_VPORT_FABRIC_LOGOUT
, "Fabric Logout" },
165 { FC_VPORT_FABRIC_REJ_WWN
, "Fabric Rejected WWN" },
166 { FC_VPORT_FAILED
, "VPort Failed" },
168 fc_enum_name_search(vport_state
, fc_vport_state
, fc_vport_state_names
)
169 #define FC_VPORTSTATE_MAX_NAMELEN 24
171 /* Reuse fc_vport_state enum function for vport_last_state */
172 #define get_fc_vport_last_state_name get_fc_vport_state_name
175 /* Convert fc_tgtid_binding_type values to ascii string name */
176 static const struct {
177 enum fc_tgtid_binding_type value
;
180 } fc_tgtid_binding_type_names
[] = {
181 { FC_TGTID_BIND_NONE
, "none", 4 },
182 { FC_TGTID_BIND_BY_WWPN
, "wwpn (World Wide Port Name)", 4 },
183 { FC_TGTID_BIND_BY_WWNN
, "wwnn (World Wide Node Name)", 4 },
184 { FC_TGTID_BIND_BY_ID
, "port_id (FC Address)", 7 },
186 fc_enum_name_search(tgtid_bind_type
, fc_tgtid_binding_type
,
187 fc_tgtid_binding_type_names
)
188 fc_enum_name_match(tgtid_bind_type
, fc_tgtid_binding_type
,
189 fc_tgtid_binding_type_names
)
190 #define FC_BINDTYPE_MAX_NAMELEN 30
193 #define fc_bitfield_name_search(title, table) \
195 get_fc_##title##_names(u32 table_key, char *buf) \
201 for (i = 0; i < ARRAY_SIZE(table); i++) { \
202 if (table[i].value & table_key) { \
203 len += sprintf(buf + len, "%s%s", \
204 prefix, table[i].name); \
208 len += sprintf(buf + len, "\n"); \
213 /* Convert FC_COS bit values to ascii string name */
214 static const struct {
218 { FC_COS_CLASS1
, "Class 1" },
219 { FC_COS_CLASS2
, "Class 2" },
220 { FC_COS_CLASS3
, "Class 3" },
221 { FC_COS_CLASS4
, "Class 4" },
222 { FC_COS_CLASS6
, "Class 6" },
224 fc_bitfield_name_search(cos
, fc_cos_names
)
227 /* Convert FC_PORTSPEED bit values to ascii string name */
228 static const struct {
231 } fc_port_speed_names
[] = {
232 { FC_PORTSPEED_1GBIT
, "1 Gbit" },
233 { FC_PORTSPEED_2GBIT
, "2 Gbit" },
234 { FC_PORTSPEED_4GBIT
, "4 Gbit" },
235 { FC_PORTSPEED_10GBIT
, "10 Gbit" },
236 { FC_PORTSPEED_8GBIT
, "8 Gbit" },
237 { FC_PORTSPEED_16GBIT
, "16 Gbit" },
238 { FC_PORTSPEED_NOT_NEGOTIATED
, "Not Negotiated" },
240 fc_bitfield_name_search(port_speed
, fc_port_speed_names
)
244 show_fc_fc4s (char *buf
, u8
*fc4_list
)
248 for (i
= 0; i
< FC_FC4_LIST_SIZE
; i
++, fc4_list
++)
249 len
+= sprintf(buf
+ len
, "0x%02x ", *fc4_list
);
250 len
+= sprintf(buf
+ len
, "\n");
255 /* Convert FC_PORT_ROLE bit values to ascii string name */
256 static const struct {
259 } fc_port_role_names
[] = {
260 { FC_PORT_ROLE_FCP_TARGET
, "FCP Target" },
261 { FC_PORT_ROLE_FCP_INITIATOR
, "FCP Initiator" },
262 { FC_PORT_ROLE_IP_PORT
, "IP Port" },
264 fc_bitfield_name_search(port_roles
, fc_port_role_names
)
267 * Define roles that are specific to port_id. Values are relative to ROLE_MASK.
269 #define FC_WELLKNOWN_PORTID_MASK 0xfffff0
270 #define FC_WELLKNOWN_ROLE_MASK 0x00000f
271 #define FC_FPORT_PORTID 0x00000e
272 #define FC_FABCTLR_PORTID 0x00000d
273 #define FC_DIRSRVR_PORTID 0x00000c
274 #define FC_TIMESRVR_PORTID 0x00000b
275 #define FC_MGMTSRVR_PORTID 0x00000a
278 static void fc_timeout_deleted_rport(struct work_struct
*work
);
279 static void fc_timeout_fail_rport_io(struct work_struct
*work
);
280 static void fc_scsi_scan_rport(struct work_struct
*work
);
283 * Attribute counts pre object type...
284 * Increase these values if you add attributes
286 #define FC_STARGET_NUM_ATTRS 3
287 #define FC_RPORT_NUM_ATTRS 10
288 #define FC_VPORT_NUM_ATTRS 9
289 #define FC_HOST_NUM_ATTRS 21
292 struct scsi_transport_template t
;
293 struct fc_function_template
*f
;
296 * For attributes : each object has :
297 * An array of the actual attributes structures
298 * An array of null-terminated pointers to the attribute
299 * structures - used for mid-layer interaction.
301 * The attribute containers for the starget and host are are
302 * part of the midlayer. As the remote port is specific to the
303 * fc transport, we must provide the attribute container.
305 struct device_attribute private_starget_attrs
[
306 FC_STARGET_NUM_ATTRS
];
307 struct device_attribute
*starget_attrs
[FC_STARGET_NUM_ATTRS
+ 1];
309 struct device_attribute private_host_attrs
[FC_HOST_NUM_ATTRS
];
310 struct device_attribute
*host_attrs
[FC_HOST_NUM_ATTRS
+ 1];
312 struct transport_container rport_attr_cont
;
313 struct device_attribute private_rport_attrs
[FC_RPORT_NUM_ATTRS
];
314 struct device_attribute
*rport_attrs
[FC_RPORT_NUM_ATTRS
+ 1];
316 struct transport_container vport_attr_cont
;
317 struct device_attribute private_vport_attrs
[FC_VPORT_NUM_ATTRS
];
318 struct device_attribute
*vport_attrs
[FC_VPORT_NUM_ATTRS
+ 1];
321 #define to_fc_internal(tmpl) container_of(tmpl, struct fc_internal, t)
323 static int fc_target_setup(struct transport_container
*tc
, struct device
*dev
,
326 struct scsi_target
*starget
= to_scsi_target(dev
);
327 struct fc_rport
*rport
= starget_to_rport(starget
);
330 * if parent is remote port, use values from remote port.
331 * Otherwise, this host uses the fc_transport, but not the
332 * remote port interface. As such, initialize to known non-values.
335 fc_starget_node_name(starget
) = rport
->node_name
;
336 fc_starget_port_name(starget
) = rport
->port_name
;
337 fc_starget_port_id(starget
) = rport
->port_id
;
339 fc_starget_node_name(starget
) = -1;
340 fc_starget_port_name(starget
) = -1;
341 fc_starget_port_id(starget
) = -1;
347 static DECLARE_TRANSPORT_CLASS(fc_transport_class
,
353 static int fc_host_setup(struct transport_container
*tc
, struct device
*dev
,
356 struct Scsi_Host
*shost
= dev_to_shost(dev
);
357 struct fc_host_attrs
*fc_host
= shost_to_fc_host(shost
);
360 * Set default values easily detected by the midlayer as
361 * failure cases. The scsi lldd is responsible for initializing
362 * all transport attributes to valid values per host.
364 fc_host
->node_name
= -1;
365 fc_host
->port_name
= -1;
366 fc_host
->permanent_port_name
= -1;
367 fc_host
->supported_classes
= FC_COS_UNSPECIFIED
;
368 memset(fc_host
->supported_fc4s
, 0,
369 sizeof(fc_host
->supported_fc4s
));
370 fc_host
->supported_speeds
= FC_PORTSPEED_UNKNOWN
;
371 fc_host
->maxframe_size
= -1;
372 fc_host
->max_npiv_vports
= 0;
373 memset(fc_host
->serial_number
, 0,
374 sizeof(fc_host
->serial_number
));
376 fc_host
->port_id
= -1;
377 fc_host
->port_type
= FC_PORTTYPE_UNKNOWN
;
378 fc_host
->port_state
= FC_PORTSTATE_UNKNOWN
;
379 memset(fc_host
->active_fc4s
, 0,
380 sizeof(fc_host
->active_fc4s
));
381 fc_host
->speed
= FC_PORTSPEED_UNKNOWN
;
382 fc_host
->fabric_name
= -1;
383 memset(fc_host
->symbolic_name
, 0, sizeof(fc_host
->symbolic_name
));
384 memset(fc_host
->system_hostname
, 0, sizeof(fc_host
->system_hostname
));
386 fc_host
->tgtid_bind_type
= FC_TGTID_BIND_BY_WWPN
;
388 INIT_LIST_HEAD(&fc_host
->rports
);
389 INIT_LIST_HEAD(&fc_host
->rport_bindings
);
390 INIT_LIST_HEAD(&fc_host
->vports
);
391 fc_host
->next_rport_number
= 0;
392 fc_host
->next_target_id
= 0;
393 fc_host
->next_vport_number
= 0;
394 fc_host
->npiv_vports_inuse
= 0;
396 snprintf(fc_host
->work_q_name
, sizeof(fc_host
->work_q_name
),
397 "fc_wq_%d", shost
->host_no
);
398 fc_host
->work_q
= create_singlethread_workqueue(
399 fc_host
->work_q_name
);
400 if (!fc_host
->work_q
)
403 snprintf(fc_host
->devloss_work_q_name
,
404 sizeof(fc_host
->devloss_work_q_name
),
405 "fc_dl_%d", shost
->host_no
);
406 fc_host
->devloss_work_q
= create_singlethread_workqueue(
407 fc_host
->devloss_work_q_name
);
408 if (!fc_host
->devloss_work_q
) {
409 destroy_workqueue(fc_host
->work_q
);
410 fc_host
->work_q
= NULL
;
417 static DECLARE_TRANSPORT_CLASS(fc_host_class
,
424 * Setup and Remove actions for remote ports are handled
425 * in the service functions below.
427 static DECLARE_TRANSPORT_CLASS(fc_rport_class
,
434 * Setup and Remove actions for virtual ports are handled
435 * in the service functions below.
437 static DECLARE_TRANSPORT_CLASS(fc_vport_class
,
448 * dev_loss_tmo: the default number of seconds that the FC transport
449 * should insulate the loss of a remote port.
450 * The maximum will be capped by the value of SCSI_DEVICE_BLOCK_MAX_TIMEOUT.
452 static unsigned int fc_dev_loss_tmo
= 60; /* seconds */
454 module_param_named(dev_loss_tmo
, fc_dev_loss_tmo
, uint
, S_IRUGO
|S_IWUSR
);
455 MODULE_PARM_DESC(dev_loss_tmo
,
456 "Maximum number of seconds that the FC transport should"
457 " insulate the loss of a remote port. Once this value is"
458 " exceeded, the scsi target is removed. Value should be"
459 " between 1 and SCSI_DEVICE_BLOCK_MAX_TIMEOUT.");
462 * Netlink Infrastructure
465 static atomic_t fc_event_seq
;
468 * fc_get_event_number - Obtain the next sequential FC event number
471 * We could have inlined this, but it would have required fc_event_seq to
472 * be exposed. For now, live with the subroutine call.
473 * Atomic used to avoid lock/unlock...
476 fc_get_event_number(void)
478 return atomic_add_return(1, &fc_event_seq
);
480 EXPORT_SYMBOL(fc_get_event_number
);
484 * fc_host_post_event - called to post an even on an fc_host.
485 * @shost: host the event occurred on
486 * @event_number: fc event number obtained from get_fc_event_number()
487 * @event_code: fc_host event being posted
488 * @event_data: 32bits of data for the event being posted
491 * This routine assumes no locks are held on entry.
494 fc_host_post_event(struct Scsi_Host
*shost
, u32 event_number
,
495 enum fc_host_event_code event_code
, u32 event_data
)
498 struct nlmsghdr
*nlh
;
499 struct fc_nl_event
*event
;
509 len
= FC_NL_MSGALIGN(sizeof(*event
));
510 skblen
= NLMSG_SPACE(len
);
512 skb
= alloc_skb(skblen
, GFP_KERNEL
);
518 nlh
= nlmsg_put(skb
, 0, 0, SCSI_TRANSPORT_MSG
,
519 skblen
- sizeof(*nlh
), 0);
524 event
= NLMSG_DATA(nlh
);
526 INIT_SCSI_NL_HDR(&event
->snlh
, SCSI_NL_TRANSPORT_FC
,
527 FC_NL_ASYNC_EVENT
, len
);
528 event
->seconds
= get_seconds();
529 event
->vendor_id
= 0;
530 event
->host_no
= shost
->host_no
;
531 event
->event_datalen
= sizeof(u32
); /* bytes */
532 event
->event_num
= event_number
;
533 event
->event_code
= event_code
;
534 event
->event_data
= event_data
;
536 err
= nlmsg_multicast(scsi_nl_sock
, skb
, 0, SCSI_NL_GRP_FC_EVENTS
,
538 if (err
&& (err
!= -ESRCH
)) /* filter no recipient errors */
539 /* nlmsg_multicast already kfree_skb'd */
547 name
= get_fc_host_event_code_name(event_code
);
549 "%s: Dropped Event : host %d %s data 0x%08x - err %d\n",
550 __func__
, shost
->host_no
,
551 (name
) ? name
: "<unknown>", event_data
, err
);
554 EXPORT_SYMBOL(fc_host_post_event
);
558 * fc_host_post_vendor_event - called to post a vendor unique event on an fc_host
559 * @shost: host the event occurred on
560 * @event_number: fc event number obtained from get_fc_event_number()
561 * @data_len: amount, in bytes, of vendor unique data
562 * @data_buf: pointer to vendor unique data
563 * @vendor_id: Vendor id
566 * This routine assumes no locks are held on entry.
569 fc_host_post_vendor_event(struct Scsi_Host
*shost
, u32 event_number
,
570 u32 data_len
, char * data_buf
, u64 vendor_id
)
573 struct nlmsghdr
*nlh
;
574 struct fc_nl_event
*event
;
580 goto send_vendor_fail
;
583 len
= FC_NL_MSGALIGN(sizeof(*event
) + data_len
);
584 skblen
= NLMSG_SPACE(len
);
586 skb
= alloc_skb(skblen
, GFP_KERNEL
);
589 goto send_vendor_fail
;
592 nlh
= nlmsg_put(skb
, 0, 0, SCSI_TRANSPORT_MSG
,
593 skblen
- sizeof(*nlh
), 0);
596 goto send_vendor_fail_skb
;
598 event
= NLMSG_DATA(nlh
);
600 INIT_SCSI_NL_HDR(&event
->snlh
, SCSI_NL_TRANSPORT_FC
,
601 FC_NL_ASYNC_EVENT
, len
);
602 event
->seconds
= get_seconds();
603 event
->vendor_id
= vendor_id
;
604 event
->host_no
= shost
->host_no
;
605 event
->event_datalen
= data_len
; /* bytes */
606 event
->event_num
= event_number
;
607 event
->event_code
= FCH_EVT_VENDOR_UNIQUE
;
608 memcpy(&event
->event_data
, data_buf
, data_len
);
610 err
= nlmsg_multicast(scsi_nl_sock
, skb
, 0, SCSI_NL_GRP_FC_EVENTS
,
612 if (err
&& (err
!= -ESRCH
)) /* filter no recipient errors */
613 /* nlmsg_multicast already kfree_skb'd */
614 goto send_vendor_fail
;
618 send_vendor_fail_skb
:
622 "%s: Dropped Event : host %d vendor_unique - err %d\n",
623 __func__
, shost
->host_no
, err
);
626 EXPORT_SYMBOL(fc_host_post_vendor_event
);
630 static __init
int fc_transport_init(void)
634 atomic_set(&fc_event_seq
, 0);
636 error
= transport_class_register(&fc_host_class
);
639 error
= transport_class_register(&fc_vport_class
);
642 error
= transport_class_register(&fc_rport_class
);
645 return transport_class_register(&fc_transport_class
);
648 static void __exit
fc_transport_exit(void)
650 transport_class_unregister(&fc_transport_class
);
651 transport_class_unregister(&fc_rport_class
);
652 transport_class_unregister(&fc_host_class
);
653 transport_class_unregister(&fc_vport_class
);
657 * FC Remote Port Attribute Management
660 #define fc_rport_show_function(field, format_string, sz, cast) \
662 show_fc_rport_##field (struct device *dev, \
663 struct device_attribute *attr, char *buf) \
665 struct fc_rport *rport = transport_class_to_rport(dev); \
666 struct Scsi_Host *shost = rport_to_shost(rport); \
667 struct fc_internal *i = to_fc_internal(shost->transportt); \
668 if ((i->f->get_rport_##field) && \
669 !((rport->port_state == FC_PORTSTATE_BLOCKED) || \
670 (rport->port_state == FC_PORTSTATE_DELETED) || \
671 (rport->port_state == FC_PORTSTATE_NOTPRESENT))) \
672 i->f->get_rport_##field(rport); \
673 return snprintf(buf, sz, format_string, cast rport->field); \
676 #define fc_rport_store_function(field) \
678 store_fc_rport_##field(struct device *dev, \
679 struct device_attribute *attr, \
680 const char *buf, size_t count) \
683 struct fc_rport *rport = transport_class_to_rport(dev); \
684 struct Scsi_Host *shost = rport_to_shost(rport); \
685 struct fc_internal *i = to_fc_internal(shost->transportt); \
687 if ((rport->port_state == FC_PORTSTATE_BLOCKED) || \
688 (rport->port_state == FC_PORTSTATE_DELETED) || \
689 (rport->port_state == FC_PORTSTATE_NOTPRESENT)) \
691 val = simple_strtoul(buf, &cp, 0); \
692 if (*cp && (*cp != '\n')) \
694 i->f->set_rport_##field(rport, val); \
698 #define fc_rport_rd_attr(field, format_string, sz) \
699 fc_rport_show_function(field, format_string, sz, ) \
700 static FC_DEVICE_ATTR(rport, field, S_IRUGO, \
701 show_fc_rport_##field, NULL)
703 #define fc_rport_rd_attr_cast(field, format_string, sz, cast) \
704 fc_rport_show_function(field, format_string, sz, (cast)) \
705 static FC_DEVICE_ATTR(rport, field, S_IRUGO, \
706 show_fc_rport_##field, NULL)
708 #define fc_rport_rw_attr(field, format_string, sz) \
709 fc_rport_show_function(field, format_string, sz, ) \
710 fc_rport_store_function(field) \
711 static FC_DEVICE_ATTR(rport, field, S_IRUGO | S_IWUSR, \
712 show_fc_rport_##field, \
713 store_fc_rport_##field)
716 #define fc_private_rport_show_function(field, format_string, sz, cast) \
718 show_fc_rport_##field (struct device *dev, \
719 struct device_attribute *attr, char *buf) \
721 struct fc_rport *rport = transport_class_to_rport(dev); \
722 return snprintf(buf, sz, format_string, cast rport->field); \
725 #define fc_private_rport_rd_attr(field, format_string, sz) \
726 fc_private_rport_show_function(field, format_string, sz, ) \
727 static FC_DEVICE_ATTR(rport, field, S_IRUGO, \
728 show_fc_rport_##field, NULL)
730 #define fc_private_rport_rd_attr_cast(field, format_string, sz, cast) \
731 fc_private_rport_show_function(field, format_string, sz, (cast)) \
732 static FC_DEVICE_ATTR(rport, field, S_IRUGO, \
733 show_fc_rport_##field, NULL)
736 #define fc_private_rport_rd_enum_attr(title, maxlen) \
738 show_fc_rport_##title (struct device *dev, \
739 struct device_attribute *attr, char *buf) \
741 struct fc_rport *rport = transport_class_to_rport(dev); \
743 name = get_fc_##title##_name(rport->title); \
746 return snprintf(buf, maxlen, "%s\n", name); \
748 static FC_DEVICE_ATTR(rport, title, S_IRUGO, \
749 show_fc_rport_##title, NULL)
752 #define SETUP_RPORT_ATTRIBUTE_RD(field) \
753 i->private_rport_attrs[count] = device_attr_rport_##field; \
754 i->private_rport_attrs[count].attr.mode = S_IRUGO; \
755 i->private_rport_attrs[count].store = NULL; \
756 i->rport_attrs[count] = &i->private_rport_attrs[count]; \
757 if (i->f->show_rport_##field) \
760 #define SETUP_PRIVATE_RPORT_ATTRIBUTE_RD(field) \
761 i->private_rport_attrs[count] = device_attr_rport_##field; \
762 i->private_rport_attrs[count].attr.mode = S_IRUGO; \
763 i->private_rport_attrs[count].store = NULL; \
764 i->rport_attrs[count] = &i->private_rport_attrs[count]; \
767 #define SETUP_RPORT_ATTRIBUTE_RW(field) \
768 i->private_rport_attrs[count] = device_attr_rport_##field; \
769 if (!i->f->set_rport_##field) { \
770 i->private_rport_attrs[count].attr.mode = S_IRUGO; \
771 i->private_rport_attrs[count].store = NULL; \
773 i->rport_attrs[count] = &i->private_rport_attrs[count]; \
774 if (i->f->show_rport_##field) \
777 #define SETUP_PRIVATE_RPORT_ATTRIBUTE_RW(field) \
779 i->private_rport_attrs[count] = device_attr_rport_##field; \
780 i->rport_attrs[count] = &i->private_rport_attrs[count]; \
785 /* The FC Transport Remote Port Attributes: */
787 /* Fixed Remote Port Attributes */
789 fc_private_rport_rd_attr(maxframe_size
, "%u bytes\n", 20);
792 show_fc_rport_supported_classes (struct device
*dev
,
793 struct device_attribute
*attr
, char *buf
)
795 struct fc_rport
*rport
= transport_class_to_rport(dev
);
796 if (rport
->supported_classes
== FC_COS_UNSPECIFIED
)
797 return snprintf(buf
, 20, "unspecified\n");
798 return get_fc_cos_names(rport
->supported_classes
, buf
);
800 static FC_DEVICE_ATTR(rport
, supported_classes
, S_IRUGO
,
801 show_fc_rport_supported_classes
, NULL
);
803 /* Dynamic Remote Port Attributes */
806 * dev_loss_tmo attribute
808 fc_rport_show_function(dev_loss_tmo
, "%d\n", 20, )
810 store_fc_rport_dev_loss_tmo(struct device
*dev
, struct device_attribute
*attr
,
811 const char *buf
, size_t count
)
814 struct fc_rport
*rport
= transport_class_to_rport(dev
);
815 struct Scsi_Host
*shost
= rport_to_shost(rport
);
816 struct fc_internal
*i
= to_fc_internal(shost
->transportt
);
818 if ((rport
->port_state
== FC_PORTSTATE_BLOCKED
) ||
819 (rport
->port_state
== FC_PORTSTATE_DELETED
) ||
820 (rport
->port_state
== FC_PORTSTATE_NOTPRESENT
))
822 val
= simple_strtoul(buf
, &cp
, 0);
823 if ((*cp
&& (*cp
!= '\n')) ||
824 (val
< 0) || (val
> SCSI_DEVICE_BLOCK_MAX_TIMEOUT
))
826 i
->f
->set_rport_dev_loss_tmo(rport
, val
);
829 static FC_DEVICE_ATTR(rport
, dev_loss_tmo
, S_IRUGO
| S_IWUSR
,
830 show_fc_rport_dev_loss_tmo
, store_fc_rport_dev_loss_tmo
);
833 /* Private Remote Port Attributes */
835 fc_private_rport_rd_attr_cast(node_name
, "0x%llx\n", 20, unsigned long long);
836 fc_private_rport_rd_attr_cast(port_name
, "0x%llx\n", 20, unsigned long long);
837 fc_private_rport_rd_attr(port_id
, "0x%06x\n", 20);
840 show_fc_rport_roles (struct device
*dev
, struct device_attribute
*attr
,
843 struct fc_rport
*rport
= transport_class_to_rport(dev
);
845 /* identify any roles that are port_id specific */
846 if ((rport
->port_id
!= -1) &&
847 (rport
->port_id
& FC_WELLKNOWN_PORTID_MASK
) ==
848 FC_WELLKNOWN_PORTID_MASK
) {
849 switch (rport
->port_id
& FC_WELLKNOWN_ROLE_MASK
) {
850 case FC_FPORT_PORTID
:
851 return snprintf(buf
, 30, "Fabric Port\n");
852 case FC_FABCTLR_PORTID
:
853 return snprintf(buf
, 30, "Fabric Controller\n");
854 case FC_DIRSRVR_PORTID
:
855 return snprintf(buf
, 30, "Directory Server\n");
856 case FC_TIMESRVR_PORTID
:
857 return snprintf(buf
, 30, "Time Server\n");
858 case FC_MGMTSRVR_PORTID
:
859 return snprintf(buf
, 30, "Management Server\n");
861 return snprintf(buf
, 30, "Unknown Fabric Entity\n");
864 if (rport
->roles
== FC_PORT_ROLE_UNKNOWN
)
865 return snprintf(buf
, 20, "unknown\n");
866 return get_fc_port_roles_names(rport
->roles
, buf
);
869 static FC_DEVICE_ATTR(rport
, roles
, S_IRUGO
,
870 show_fc_rport_roles
, NULL
);
872 fc_private_rport_rd_enum_attr(port_state
, FC_PORTSTATE_MAX_NAMELEN
);
873 fc_private_rport_rd_attr(scsi_target_id
, "%d\n", 20);
876 * fast_io_fail_tmo attribute
879 show_fc_rport_fast_io_fail_tmo (struct device
*dev
,
880 struct device_attribute
*attr
, char *buf
)
882 struct fc_rport
*rport
= transport_class_to_rport(dev
);
884 if (rport
->fast_io_fail_tmo
== -1)
885 return snprintf(buf
, 5, "off\n");
886 return snprintf(buf
, 20, "%d\n", rport
->fast_io_fail_tmo
);
890 store_fc_rport_fast_io_fail_tmo(struct device
*dev
,
891 struct device_attribute
*attr
, const char *buf
,
896 struct fc_rport
*rport
= transport_class_to_rport(dev
);
898 if ((rport
->port_state
== FC_PORTSTATE_BLOCKED
) ||
899 (rport
->port_state
== FC_PORTSTATE_DELETED
) ||
900 (rport
->port_state
== FC_PORTSTATE_NOTPRESENT
))
902 if (strncmp(buf
, "off", 3) == 0)
903 rport
->fast_io_fail_tmo
= -1;
905 val
= simple_strtoul(buf
, &cp
, 0);
906 if ((*cp
&& (*cp
!= '\n')) ||
907 (val
< 0) || (val
>= rport
->dev_loss_tmo
))
909 rport
->fast_io_fail_tmo
= val
;
913 static FC_DEVICE_ATTR(rport
, fast_io_fail_tmo
, S_IRUGO
| S_IWUSR
,
914 show_fc_rport_fast_io_fail_tmo
, store_fc_rport_fast_io_fail_tmo
);
918 * FC SCSI Target Attribute Management
922 * Note: in the target show function we recognize when the remote
923 * port is in the heirarchy and do not allow the driver to get
924 * involved in sysfs functions. The driver only gets involved if
925 * it's the "old" style that doesn't use rports.
927 #define fc_starget_show_function(field, format_string, sz, cast) \
929 show_fc_starget_##field (struct device *dev, \
930 struct device_attribute *attr, char *buf) \
932 struct scsi_target *starget = transport_class_to_starget(dev); \
933 struct Scsi_Host *shost = dev_to_shost(starget->dev.parent); \
934 struct fc_internal *i = to_fc_internal(shost->transportt); \
935 struct fc_rport *rport = starget_to_rport(starget); \
937 fc_starget_##field(starget) = rport->field; \
938 else if (i->f->get_starget_##field) \
939 i->f->get_starget_##field(starget); \
940 return snprintf(buf, sz, format_string, \
941 cast fc_starget_##field(starget)); \
944 #define fc_starget_rd_attr(field, format_string, sz) \
945 fc_starget_show_function(field, format_string, sz, ) \
946 static FC_DEVICE_ATTR(starget, field, S_IRUGO, \
947 show_fc_starget_##field, NULL)
949 #define fc_starget_rd_attr_cast(field, format_string, sz, cast) \
950 fc_starget_show_function(field, format_string, sz, (cast)) \
951 static FC_DEVICE_ATTR(starget, field, S_IRUGO, \
952 show_fc_starget_##field, NULL)
954 #define SETUP_STARGET_ATTRIBUTE_RD(field) \
955 i->private_starget_attrs[count] = device_attr_starget_##field; \
956 i->private_starget_attrs[count].attr.mode = S_IRUGO; \
957 i->private_starget_attrs[count].store = NULL; \
958 i->starget_attrs[count] = &i->private_starget_attrs[count]; \
959 if (i->f->show_starget_##field) \
962 #define SETUP_STARGET_ATTRIBUTE_RW(field) \
963 i->private_starget_attrs[count] = device_attr_starget_##field; \
964 if (!i->f->set_starget_##field) { \
965 i->private_starget_attrs[count].attr.mode = S_IRUGO; \
966 i->private_starget_attrs[count].store = NULL; \
968 i->starget_attrs[count] = &i->private_starget_attrs[count]; \
969 if (i->f->show_starget_##field) \
972 /* The FC Transport SCSI Target Attributes: */
973 fc_starget_rd_attr_cast(node_name
, "0x%llx\n", 20, unsigned long long);
974 fc_starget_rd_attr_cast(port_name
, "0x%llx\n", 20, unsigned long long);
975 fc_starget_rd_attr(port_id
, "0x%06x\n", 20);
979 * FC Virtual Port Attribute Management
982 #define fc_vport_show_function(field, format_string, sz, cast) \
984 show_fc_vport_##field (struct device *dev, \
985 struct device_attribute *attr, char *buf) \
987 struct fc_vport *vport = transport_class_to_vport(dev); \
988 struct Scsi_Host *shost = vport_to_shost(vport); \
989 struct fc_internal *i = to_fc_internal(shost->transportt); \
990 if ((i->f->get_vport_##field) && \
991 !(vport->flags & (FC_VPORT_DEL | FC_VPORT_CREATING))) \
992 i->f->get_vport_##field(vport); \
993 return snprintf(buf, sz, format_string, cast vport->field); \
996 #define fc_vport_store_function(field) \
998 store_fc_vport_##field(struct device *dev, \
999 struct device_attribute *attr, \
1000 const char *buf, size_t count) \
1003 struct fc_vport *vport = transport_class_to_vport(dev); \
1004 struct Scsi_Host *shost = vport_to_shost(vport); \
1005 struct fc_internal *i = to_fc_internal(shost->transportt); \
1007 if (vport->flags & (FC_VPORT_DEL | FC_VPORT_CREATING)) \
1009 val = simple_strtoul(buf, &cp, 0); \
1010 if (*cp && (*cp != '\n')) \
1012 i->f->set_vport_##field(vport, val); \
1016 #define fc_vport_store_str_function(field, slen) \
1018 store_fc_vport_##field(struct device *dev, \
1019 struct device_attribute *attr, \
1020 const char *buf, size_t count) \
1022 struct fc_vport *vport = transport_class_to_vport(dev); \
1023 struct Scsi_Host *shost = vport_to_shost(vport); \
1024 struct fc_internal *i = to_fc_internal(shost->transportt); \
1025 unsigned int cnt=count; \
1027 /* count may include a LF at end of string */ \
1028 if (buf[cnt-1] == '\n') \
1030 if (cnt > ((slen) - 1)) \
1032 memcpy(vport->field, buf, cnt); \
1033 i->f->set_vport_##field(vport); \
1037 #define fc_vport_rd_attr(field, format_string, sz) \
1038 fc_vport_show_function(field, format_string, sz, ) \
1039 static FC_DEVICE_ATTR(vport, field, S_IRUGO, \
1040 show_fc_vport_##field, NULL)
1042 #define fc_vport_rd_attr_cast(field, format_string, sz, cast) \
1043 fc_vport_show_function(field, format_string, sz, (cast)) \
1044 static FC_DEVICE_ATTR(vport, field, S_IRUGO, \
1045 show_fc_vport_##field, NULL)
1047 #define fc_vport_rw_attr(field, format_string, sz) \
1048 fc_vport_show_function(field, format_string, sz, ) \
1049 fc_vport_store_function(field) \
1050 static FC_DEVICE_ATTR(vport, field, S_IRUGO | S_IWUSR, \
1051 show_fc_vport_##field, \
1052 store_fc_vport_##field)
1054 #define fc_private_vport_show_function(field, format_string, sz, cast) \
1056 show_fc_vport_##field (struct device *dev, \
1057 struct device_attribute *attr, char *buf) \
1059 struct fc_vport *vport = transport_class_to_vport(dev); \
1060 return snprintf(buf, sz, format_string, cast vport->field); \
1063 #define fc_private_vport_store_u32_function(field) \
1065 store_fc_vport_##field(struct device *dev, \
1066 struct device_attribute *attr, \
1067 const char *buf, size_t count) \
1070 struct fc_vport *vport = transport_class_to_vport(dev); \
1072 if (vport->flags & (FC_VPORT_DEL | FC_VPORT_CREATING)) \
1074 val = simple_strtoul(buf, &cp, 0); \
1075 if (*cp && (*cp != '\n')) \
1077 vport->field = val; \
1082 #define fc_private_vport_rd_attr(field, format_string, sz) \
1083 fc_private_vport_show_function(field, format_string, sz, ) \
1084 static FC_DEVICE_ATTR(vport, field, S_IRUGO, \
1085 show_fc_vport_##field, NULL)
1087 #define fc_private_vport_rd_attr_cast(field, format_string, sz, cast) \
1088 fc_private_vport_show_function(field, format_string, sz, (cast)) \
1089 static FC_DEVICE_ATTR(vport, field, S_IRUGO, \
1090 show_fc_vport_##field, NULL)
1092 #define fc_private_vport_rw_u32_attr(field, format_string, sz) \
1093 fc_private_vport_show_function(field, format_string, sz, ) \
1094 fc_private_vport_store_u32_function(field) \
1095 static FC_DEVICE_ATTR(vport, field, S_IRUGO | S_IWUSR, \
1096 show_fc_vport_##field, \
1097 store_fc_vport_##field)
1100 #define fc_private_vport_rd_enum_attr(title, maxlen) \
1102 show_fc_vport_##title (struct device *dev, \
1103 struct device_attribute *attr, \
1106 struct fc_vport *vport = transport_class_to_vport(dev); \
1108 name = get_fc_##title##_name(vport->title); \
1111 return snprintf(buf, maxlen, "%s\n", name); \
1113 static FC_DEVICE_ATTR(vport, title, S_IRUGO, \
1114 show_fc_vport_##title, NULL)
1117 #define SETUP_VPORT_ATTRIBUTE_RD(field) \
1118 i->private_vport_attrs[count] = device_attr_vport_##field; \
1119 i->private_vport_attrs[count].attr.mode = S_IRUGO; \
1120 i->private_vport_attrs[count].store = NULL; \
1121 i->vport_attrs[count] = &i->private_vport_attrs[count]; \
1122 if (i->f->get_##field) \
1124 /* NOTE: Above MACRO differs: checks function not show bit */
1126 #define SETUP_PRIVATE_VPORT_ATTRIBUTE_RD(field) \
1127 i->private_vport_attrs[count] = device_attr_vport_##field; \
1128 i->private_vport_attrs[count].attr.mode = S_IRUGO; \
1129 i->private_vport_attrs[count].store = NULL; \
1130 i->vport_attrs[count] = &i->private_vport_attrs[count]; \
1133 #define SETUP_VPORT_ATTRIBUTE_WR(field) \
1134 i->private_vport_attrs[count] = device_attr_vport_##field; \
1135 i->vport_attrs[count] = &i->private_vport_attrs[count]; \
1138 /* NOTE: Above MACRO differs: checks function */
1140 #define SETUP_VPORT_ATTRIBUTE_RW(field) \
1141 i->private_vport_attrs[count] = device_attr_vport_##field; \
1142 if (!i->f->set_vport_##field) { \
1143 i->private_vport_attrs[count].attr.mode = S_IRUGO; \
1144 i->private_vport_attrs[count].store = NULL; \
1146 i->vport_attrs[count] = &i->private_vport_attrs[count]; \
1148 /* NOTE: Above MACRO differs: does not check show bit */
1150 #define SETUP_PRIVATE_VPORT_ATTRIBUTE_RW(field) \
1152 i->private_vport_attrs[count] = device_attr_vport_##field; \
1153 i->vport_attrs[count] = &i->private_vport_attrs[count]; \
1158 /* The FC Transport Virtual Port Attributes: */
1160 /* Fixed Virtual Port Attributes */
1162 /* Dynamic Virtual Port Attributes */
1164 /* Private Virtual Port Attributes */
1166 fc_private_vport_rd_enum_attr(vport_state
, FC_VPORTSTATE_MAX_NAMELEN
);
1167 fc_private_vport_rd_enum_attr(vport_last_state
, FC_VPORTSTATE_MAX_NAMELEN
);
1168 fc_private_vport_rd_attr_cast(node_name
, "0x%llx\n", 20, unsigned long long);
1169 fc_private_vport_rd_attr_cast(port_name
, "0x%llx\n", 20, unsigned long long);
1172 show_fc_vport_roles (struct device
*dev
, struct device_attribute
*attr
,
1175 struct fc_vport
*vport
= transport_class_to_vport(dev
);
1177 if (vport
->roles
== FC_PORT_ROLE_UNKNOWN
)
1178 return snprintf(buf
, 20, "unknown\n");
1179 return get_fc_port_roles_names(vport
->roles
, buf
);
1181 static FC_DEVICE_ATTR(vport
, roles
, S_IRUGO
, show_fc_vport_roles
, NULL
);
1183 fc_private_vport_rd_enum_attr(vport_type
, FC_PORTTYPE_MAX_NAMELEN
);
1185 fc_private_vport_show_function(symbolic_name
, "%s\n",
1186 FC_VPORT_SYMBOLIC_NAMELEN
+ 1, )
1187 fc_vport_store_str_function(symbolic_name
, FC_VPORT_SYMBOLIC_NAMELEN
)
1188 static FC_DEVICE_ATTR(vport
, symbolic_name
, S_IRUGO
| S_IWUSR
,
1189 show_fc_vport_symbolic_name
, store_fc_vport_symbolic_name
);
1192 store_fc_vport_delete(struct device
*dev
, struct device_attribute
*attr
,
1193 const char *buf
, size_t count
)
1195 struct fc_vport
*vport
= transport_class_to_vport(dev
);
1196 struct Scsi_Host
*shost
= vport_to_shost(vport
);
1198 fc_queue_work(shost
, &vport
->vport_delete_work
);
1201 static FC_DEVICE_ATTR(vport
, vport_delete
, S_IWUSR
,
1202 NULL
, store_fc_vport_delete
);
1206 * Enable/Disable vport
1207 * Write "1" to disable, write "0" to enable
1210 store_fc_vport_disable(struct device
*dev
, struct device_attribute
*attr
,
1214 struct fc_vport
*vport
= transport_class_to_vport(dev
);
1215 struct Scsi_Host
*shost
= vport_to_shost(vport
);
1216 struct fc_internal
*i
= to_fc_internal(shost
->transportt
);
1219 if (vport
->flags
& (FC_VPORT_DEL
| FC_VPORT_CREATING
))
1223 if (vport
->vport_state
!= FC_VPORT_DISABLED
)
1225 } else if (*buf
== '1') {
1226 if (vport
->vport_state
== FC_VPORT_DISABLED
)
1231 stat
= i
->f
->vport_disable(vport
, ((*buf
== '0') ? false : true));
1232 return stat
? stat
: count
;
1234 static FC_DEVICE_ATTR(vport
, vport_disable
, S_IWUSR
,
1235 NULL
, store_fc_vport_disable
);
1239 * Host Attribute Management
1242 #define fc_host_show_function(field, format_string, sz, cast) \
1244 show_fc_host_##field (struct device *dev, \
1245 struct device_attribute *attr, char *buf) \
1247 struct Scsi_Host *shost = transport_class_to_shost(dev); \
1248 struct fc_internal *i = to_fc_internal(shost->transportt); \
1249 if (i->f->get_host_##field) \
1250 i->f->get_host_##field(shost); \
1251 return snprintf(buf, sz, format_string, cast fc_host_##field(shost)); \
1254 #define fc_host_store_function(field) \
1256 store_fc_host_##field(struct device *dev, \
1257 struct device_attribute *attr, \
1258 const char *buf, size_t count) \
1261 struct Scsi_Host *shost = transport_class_to_shost(dev); \
1262 struct fc_internal *i = to_fc_internal(shost->transportt); \
1265 val = simple_strtoul(buf, &cp, 0); \
1266 if (*cp && (*cp != '\n')) \
1268 i->f->set_host_##field(shost, val); \
1272 #define fc_host_store_str_function(field, slen) \
1274 store_fc_host_##field(struct device *dev, \
1275 struct device_attribute *attr, \
1276 const char *buf, size_t count) \
1278 struct Scsi_Host *shost = transport_class_to_shost(dev); \
1279 struct fc_internal *i = to_fc_internal(shost->transportt); \
1280 unsigned int cnt=count; \
1282 /* count may include a LF at end of string */ \
1283 if (buf[cnt-1] == '\n') \
1285 if (cnt > ((slen) - 1)) \
1287 memcpy(fc_host_##field(shost), buf, cnt); \
1288 i->f->set_host_##field(shost); \
1292 #define fc_host_rd_attr(field, format_string, sz) \
1293 fc_host_show_function(field, format_string, sz, ) \
1294 static FC_DEVICE_ATTR(host, field, S_IRUGO, \
1295 show_fc_host_##field, NULL)
1297 #define fc_host_rd_attr_cast(field, format_string, sz, cast) \
1298 fc_host_show_function(field, format_string, sz, (cast)) \
1299 static FC_DEVICE_ATTR(host, field, S_IRUGO, \
1300 show_fc_host_##field, NULL)
1302 #define fc_host_rw_attr(field, format_string, sz) \
1303 fc_host_show_function(field, format_string, sz, ) \
1304 fc_host_store_function(field) \
1305 static FC_DEVICE_ATTR(host, field, S_IRUGO | S_IWUSR, \
1306 show_fc_host_##field, \
1307 store_fc_host_##field)
1309 #define fc_host_rd_enum_attr(title, maxlen) \
1311 show_fc_host_##title (struct device *dev, \
1312 struct device_attribute *attr, char *buf) \
1314 struct Scsi_Host *shost = transport_class_to_shost(dev); \
1315 struct fc_internal *i = to_fc_internal(shost->transportt); \
1317 if (i->f->get_host_##title) \
1318 i->f->get_host_##title(shost); \
1319 name = get_fc_##title##_name(fc_host_##title(shost)); \
1322 return snprintf(buf, maxlen, "%s\n", name); \
1324 static FC_DEVICE_ATTR(host, title, S_IRUGO, show_fc_host_##title, NULL)
1326 #define SETUP_HOST_ATTRIBUTE_RD(field) \
1327 i->private_host_attrs[count] = device_attr_host_##field; \
1328 i->private_host_attrs[count].attr.mode = S_IRUGO; \
1329 i->private_host_attrs[count].store = NULL; \
1330 i->host_attrs[count] = &i->private_host_attrs[count]; \
1331 if (i->f->show_host_##field) \
1334 #define SETUP_HOST_ATTRIBUTE_RD_NS(field) \
1335 i->private_host_attrs[count] = device_attr_host_##field; \
1336 i->private_host_attrs[count].attr.mode = S_IRUGO; \
1337 i->private_host_attrs[count].store = NULL; \
1338 i->host_attrs[count] = &i->private_host_attrs[count]; \
1341 #define SETUP_HOST_ATTRIBUTE_RW(field) \
1342 i->private_host_attrs[count] = device_attr_host_##field; \
1343 if (!i->f->set_host_##field) { \
1344 i->private_host_attrs[count].attr.mode = S_IRUGO; \
1345 i->private_host_attrs[count].store = NULL; \
1347 i->host_attrs[count] = &i->private_host_attrs[count]; \
1348 if (i->f->show_host_##field) \
1352 #define fc_private_host_show_function(field, format_string, sz, cast) \
1354 show_fc_host_##field (struct device *dev, \
1355 struct device_attribute *attr, char *buf) \
1357 struct Scsi_Host *shost = transport_class_to_shost(dev); \
1358 return snprintf(buf, sz, format_string, cast fc_host_##field(shost)); \
1361 #define fc_private_host_rd_attr(field, format_string, sz) \
1362 fc_private_host_show_function(field, format_string, sz, ) \
1363 static FC_DEVICE_ATTR(host, field, S_IRUGO, \
1364 show_fc_host_##field, NULL)
1366 #define fc_private_host_rd_attr_cast(field, format_string, sz, cast) \
1367 fc_private_host_show_function(field, format_string, sz, (cast)) \
1368 static FC_DEVICE_ATTR(host, field, S_IRUGO, \
1369 show_fc_host_##field, NULL)
1371 #define SETUP_PRIVATE_HOST_ATTRIBUTE_RD(field) \
1372 i->private_host_attrs[count] = device_attr_host_##field; \
1373 i->private_host_attrs[count].attr.mode = S_IRUGO; \
1374 i->private_host_attrs[count].store = NULL; \
1375 i->host_attrs[count] = &i->private_host_attrs[count]; \
1378 #define SETUP_PRIVATE_HOST_ATTRIBUTE_RW(field) \
1380 i->private_host_attrs[count] = device_attr_host_##field; \
1381 i->host_attrs[count] = &i->private_host_attrs[count]; \
1386 /* Fixed Host Attributes */
1389 show_fc_host_supported_classes (struct device
*dev
,
1390 struct device_attribute
*attr
, char *buf
)
1392 struct Scsi_Host
*shost
= transport_class_to_shost(dev
);
1394 if (fc_host_supported_classes(shost
) == FC_COS_UNSPECIFIED
)
1395 return snprintf(buf
, 20, "unspecified\n");
1397 return get_fc_cos_names(fc_host_supported_classes(shost
), buf
);
1399 static FC_DEVICE_ATTR(host
, supported_classes
, S_IRUGO
,
1400 show_fc_host_supported_classes
, NULL
);
1403 show_fc_host_supported_fc4s (struct device
*dev
,
1404 struct device_attribute
*attr
, char *buf
)
1406 struct Scsi_Host
*shost
= transport_class_to_shost(dev
);
1407 return (ssize_t
)show_fc_fc4s(buf
, fc_host_supported_fc4s(shost
));
1409 static FC_DEVICE_ATTR(host
, supported_fc4s
, S_IRUGO
,
1410 show_fc_host_supported_fc4s
, NULL
);
1413 show_fc_host_supported_speeds (struct device
*dev
,
1414 struct device_attribute
*attr
, char *buf
)
1416 struct Scsi_Host
*shost
= transport_class_to_shost(dev
);
1418 if (fc_host_supported_speeds(shost
) == FC_PORTSPEED_UNKNOWN
)
1419 return snprintf(buf
, 20, "unknown\n");
1421 return get_fc_port_speed_names(fc_host_supported_speeds(shost
), buf
);
1423 static FC_DEVICE_ATTR(host
, supported_speeds
, S_IRUGO
,
1424 show_fc_host_supported_speeds
, NULL
);
1427 fc_private_host_rd_attr_cast(node_name
, "0x%llx\n", 20, unsigned long long);
1428 fc_private_host_rd_attr_cast(port_name
, "0x%llx\n", 20, unsigned long long);
1429 fc_private_host_rd_attr_cast(permanent_port_name
, "0x%llx\n", 20,
1430 unsigned long long);
1431 fc_private_host_rd_attr(maxframe_size
, "%u bytes\n", 20);
1432 fc_private_host_rd_attr(max_npiv_vports
, "%u\n", 20);
1433 fc_private_host_rd_attr(serial_number
, "%s\n", (FC_SERIAL_NUMBER_SIZE
+1));
1436 /* Dynamic Host Attributes */
1439 show_fc_host_active_fc4s (struct device
*dev
,
1440 struct device_attribute
*attr
, char *buf
)
1442 struct Scsi_Host
*shost
= transport_class_to_shost(dev
);
1443 struct fc_internal
*i
= to_fc_internal(shost
->transportt
);
1445 if (i
->f
->get_host_active_fc4s
)
1446 i
->f
->get_host_active_fc4s(shost
);
1448 return (ssize_t
)show_fc_fc4s(buf
, fc_host_active_fc4s(shost
));
1450 static FC_DEVICE_ATTR(host
, active_fc4s
, S_IRUGO
,
1451 show_fc_host_active_fc4s
, NULL
);
1454 show_fc_host_speed (struct device
*dev
,
1455 struct device_attribute
*attr
, char *buf
)
1457 struct Scsi_Host
*shost
= transport_class_to_shost(dev
);
1458 struct fc_internal
*i
= to_fc_internal(shost
->transportt
);
1460 if (i
->f
->get_host_speed
)
1461 i
->f
->get_host_speed(shost
);
1463 if (fc_host_speed(shost
) == FC_PORTSPEED_UNKNOWN
)
1464 return snprintf(buf
, 20, "unknown\n");
1466 return get_fc_port_speed_names(fc_host_speed(shost
), buf
);
1468 static FC_DEVICE_ATTR(host
, speed
, S_IRUGO
,
1469 show_fc_host_speed
, NULL
);
1472 fc_host_rd_attr(port_id
, "0x%06x\n", 20);
1473 fc_host_rd_enum_attr(port_type
, FC_PORTTYPE_MAX_NAMELEN
);
1474 fc_host_rd_enum_attr(port_state
, FC_PORTSTATE_MAX_NAMELEN
);
1475 fc_host_rd_attr_cast(fabric_name
, "0x%llx\n", 20, unsigned long long);
1476 fc_host_rd_attr(symbolic_name
, "%s\n", FC_SYMBOLIC_NAME_SIZE
+ 1);
1478 fc_private_host_show_function(system_hostname
, "%s\n",
1479 FC_SYMBOLIC_NAME_SIZE
+ 1, )
1480 fc_host_store_str_function(system_hostname
, FC_SYMBOLIC_NAME_SIZE
)
1481 static FC_DEVICE_ATTR(host
, system_hostname
, S_IRUGO
| S_IWUSR
,
1482 show_fc_host_system_hostname
, store_fc_host_system_hostname
);
1485 /* Private Host Attributes */
1488 show_fc_private_host_tgtid_bind_type(struct device
*dev
,
1489 struct device_attribute
*attr
, char *buf
)
1491 struct Scsi_Host
*shost
= transport_class_to_shost(dev
);
1494 name
= get_fc_tgtid_bind_type_name(fc_host_tgtid_bind_type(shost
));
1497 return snprintf(buf
, FC_BINDTYPE_MAX_NAMELEN
, "%s\n", name
);
1500 #define get_list_head_entry(pos, head, member) \
1501 pos = list_entry((head)->next, typeof(*pos), member)
1504 store_fc_private_host_tgtid_bind_type(struct device
*dev
,
1505 struct device_attribute
*attr
, const char *buf
, size_t count
)
1507 struct Scsi_Host
*shost
= transport_class_to_shost(dev
);
1508 struct fc_rport
*rport
;
1509 enum fc_tgtid_binding_type val
;
1510 unsigned long flags
;
1512 if (get_fc_tgtid_bind_type_match(buf
, &val
))
1515 /* if changing bind type, purge all unused consistent bindings */
1516 if (val
!= fc_host_tgtid_bind_type(shost
)) {
1517 spin_lock_irqsave(shost
->host_lock
, flags
);
1518 while (!list_empty(&fc_host_rport_bindings(shost
))) {
1519 get_list_head_entry(rport
,
1520 &fc_host_rport_bindings(shost
), peers
);
1521 list_del(&rport
->peers
);
1522 rport
->port_state
= FC_PORTSTATE_DELETED
;
1523 fc_queue_work(shost
, &rport
->rport_delete_work
);
1525 spin_unlock_irqrestore(shost
->host_lock
, flags
);
1528 fc_host_tgtid_bind_type(shost
) = val
;
1532 static FC_DEVICE_ATTR(host
, tgtid_bind_type
, S_IRUGO
| S_IWUSR
,
1533 show_fc_private_host_tgtid_bind_type
,
1534 store_fc_private_host_tgtid_bind_type
);
1537 store_fc_private_host_issue_lip(struct device
*dev
,
1538 struct device_attribute
*attr
, const char *buf
, size_t count
)
1540 struct Scsi_Host
*shost
= transport_class_to_shost(dev
);
1541 struct fc_internal
*i
= to_fc_internal(shost
->transportt
);
1544 /* ignore any data value written to the attribute */
1545 if (i
->f
->issue_fc_host_lip
) {
1546 ret
= i
->f
->issue_fc_host_lip(shost
);
1547 return ret
? ret
: count
;
1553 static FC_DEVICE_ATTR(host
, issue_lip
, S_IWUSR
, NULL
,
1554 store_fc_private_host_issue_lip
);
1556 fc_private_host_rd_attr(npiv_vports_inuse
, "%u\n", 20);
1560 * Host Statistics Management
1563 /* Show a given an attribute in the statistics group */
1565 fc_stat_show(const struct device
*dev
, char *buf
, unsigned long offset
)
1567 struct Scsi_Host
*shost
= transport_class_to_shost(dev
);
1568 struct fc_internal
*i
= to_fc_internal(shost
->transportt
);
1569 struct fc_host_statistics
*stats
;
1570 ssize_t ret
= -ENOENT
;
1572 if (offset
> sizeof(struct fc_host_statistics
) ||
1573 offset
% sizeof(u64
) != 0)
1576 if (i
->f
->get_fc_host_stats
) {
1577 stats
= (i
->f
->get_fc_host_stats
)(shost
);
1579 ret
= snprintf(buf
, 20, "0x%llx\n",
1580 (unsigned long long)*(u64
*)(((u8
*) stats
) + offset
));
1586 /* generate a read-only statistics attribute */
1587 #define fc_host_statistic(name) \
1588 static ssize_t show_fcstat_##name(struct device *cd, \
1589 struct device_attribute *attr, \
1592 return fc_stat_show(cd, buf, \
1593 offsetof(struct fc_host_statistics, name)); \
1595 static FC_DEVICE_ATTR(host, name, S_IRUGO, show_fcstat_##name, NULL)
1597 fc_host_statistic(seconds_since_last_reset
);
1598 fc_host_statistic(tx_frames
);
1599 fc_host_statistic(tx_words
);
1600 fc_host_statistic(rx_frames
);
1601 fc_host_statistic(rx_words
);
1602 fc_host_statistic(lip_count
);
1603 fc_host_statistic(nos_count
);
1604 fc_host_statistic(error_frames
);
1605 fc_host_statistic(dumped_frames
);
1606 fc_host_statistic(link_failure_count
);
1607 fc_host_statistic(loss_of_sync_count
);
1608 fc_host_statistic(loss_of_signal_count
);
1609 fc_host_statistic(prim_seq_protocol_err_count
);
1610 fc_host_statistic(invalid_tx_word_count
);
1611 fc_host_statistic(invalid_crc_count
);
1612 fc_host_statistic(fcp_input_requests
);
1613 fc_host_statistic(fcp_output_requests
);
1614 fc_host_statistic(fcp_control_requests
);
1615 fc_host_statistic(fcp_input_megabytes
);
1616 fc_host_statistic(fcp_output_megabytes
);
1619 fc_reset_statistics(struct device
*dev
, struct device_attribute
*attr
,
1620 const char *buf
, size_t count
)
1622 struct Scsi_Host
*shost
= transport_class_to_shost(dev
);
1623 struct fc_internal
*i
= to_fc_internal(shost
->transportt
);
1625 /* ignore any data value written to the attribute */
1626 if (i
->f
->reset_fc_host_stats
) {
1627 i
->f
->reset_fc_host_stats(shost
);
1633 static FC_DEVICE_ATTR(host
, reset_statistics
, S_IWUSR
, NULL
,
1634 fc_reset_statistics
);
1636 static struct attribute
*fc_statistics_attrs
[] = {
1637 &device_attr_host_seconds_since_last_reset
.attr
,
1638 &device_attr_host_tx_frames
.attr
,
1639 &device_attr_host_tx_words
.attr
,
1640 &device_attr_host_rx_frames
.attr
,
1641 &device_attr_host_rx_words
.attr
,
1642 &device_attr_host_lip_count
.attr
,
1643 &device_attr_host_nos_count
.attr
,
1644 &device_attr_host_error_frames
.attr
,
1645 &device_attr_host_dumped_frames
.attr
,
1646 &device_attr_host_link_failure_count
.attr
,
1647 &device_attr_host_loss_of_sync_count
.attr
,
1648 &device_attr_host_loss_of_signal_count
.attr
,
1649 &device_attr_host_prim_seq_protocol_err_count
.attr
,
1650 &device_attr_host_invalid_tx_word_count
.attr
,
1651 &device_attr_host_invalid_crc_count
.attr
,
1652 &device_attr_host_fcp_input_requests
.attr
,
1653 &device_attr_host_fcp_output_requests
.attr
,
1654 &device_attr_host_fcp_control_requests
.attr
,
1655 &device_attr_host_fcp_input_megabytes
.attr
,
1656 &device_attr_host_fcp_output_megabytes
.attr
,
1657 &device_attr_host_reset_statistics
.attr
,
1661 static struct attribute_group fc_statistics_group
= {
1662 .name
= "statistics",
1663 .attrs
= fc_statistics_attrs
,
1667 /* Host Vport Attributes */
1670 fc_parse_wwn(const char *ns
, u64
*nm
)
1675 memset(wwn
, 0, sizeof(wwn
));
1677 /* Validate and store the new name */
1678 for (i
=0, j
=0; i
< 16; i
++) {
1679 if ((*ns
>= 'a') && (*ns
<= 'f'))
1680 j
= ((j
<< 4) | ((*ns
++ -'a') + 10));
1681 else if ((*ns
>= 'A') && (*ns
<= 'F'))
1682 j
= ((j
<< 4) | ((*ns
++ -'A') + 10));
1683 else if ((*ns
>= '0') && (*ns
<= '9'))
1684 j
= ((j
<< 4) | (*ns
++ -'0'));
1688 wwn
[i
/2] = j
& 0xff;
1693 *nm
= wwn_to_u64(wwn
);
1700 * "Short-cut" sysfs variable to create a new vport on a FC Host.
1701 * Input is a string of the form "<WWPN>:<WWNN>". Other attributes
1702 * will default to a NPIV-based FCP_Initiator; The WWNs are specified
1703 * as hex characters, and may *not* contain any prefixes (e.g. 0x, x, etc)
1706 store_fc_host_vport_create(struct device
*dev
, struct device_attribute
*attr
,
1707 const char *buf
, size_t count
)
1709 struct Scsi_Host
*shost
= transport_class_to_shost(dev
);
1710 struct fc_vport_identifiers vid
;
1711 struct fc_vport
*vport
;
1712 unsigned int cnt
=count
;
1715 memset(&vid
, 0, sizeof(vid
));
1717 /* count may include a LF at end of string */
1718 if (buf
[cnt
-1] == '\n')
1721 /* validate we have enough characters for WWPN */
1722 if ((cnt
!= (16+1+16)) || (buf
[16] != ':'))
1725 stat
= fc_parse_wwn(&buf
[0], &vid
.port_name
);
1729 stat
= fc_parse_wwn(&buf
[17], &vid
.node_name
);
1733 vid
.roles
= FC_PORT_ROLE_FCP_INITIATOR
;
1734 vid
.vport_type
= FC_PORTTYPE_NPIV
;
1735 /* vid.symbolic_name is already zero/NULL's */
1736 vid
.disable
= false; /* always enabled */
1738 /* we only allow support on Channel 0 !!! */
1739 stat
= fc_vport_setup(shost
, 0, &shost
->shost_gendev
, &vid
, &vport
);
1740 return stat
? stat
: count
;
1742 static FC_DEVICE_ATTR(host
, vport_create
, S_IWUSR
, NULL
,
1743 store_fc_host_vport_create
);
1747 * "Short-cut" sysfs variable to delete a vport on a FC Host.
1748 * Vport is identified by a string containing "<WWPN>:<WWNN>".
1749 * The WWNs are specified as hex characters, and may *not* contain
1750 * any prefixes (e.g. 0x, x, etc)
1753 store_fc_host_vport_delete(struct device
*dev
, struct device_attribute
*attr
,
1754 const char *buf
, size_t count
)
1756 struct Scsi_Host
*shost
= transport_class_to_shost(dev
);
1757 struct fc_host_attrs
*fc_host
= shost_to_fc_host(shost
);
1758 struct fc_vport
*vport
;
1760 unsigned long flags
;
1761 unsigned int cnt
=count
;
1764 /* count may include a LF at end of string */
1765 if (buf
[cnt
-1] == '\n')
1768 /* validate we have enough characters for WWPN */
1769 if ((cnt
!= (16+1+16)) || (buf
[16] != ':'))
1772 stat
= fc_parse_wwn(&buf
[0], &wwpn
);
1776 stat
= fc_parse_wwn(&buf
[17], &wwnn
);
1780 spin_lock_irqsave(shost
->host_lock
, flags
);
1782 /* we only allow support on Channel 0 !!! */
1783 list_for_each_entry(vport
, &fc_host
->vports
, peers
) {
1784 if ((vport
->channel
== 0) &&
1785 (vport
->port_name
== wwpn
) && (vport
->node_name
== wwnn
)) {
1790 spin_unlock_irqrestore(shost
->host_lock
, flags
);
1795 stat
= fc_vport_terminate(vport
);
1796 return stat
? stat
: count
;
1798 static FC_DEVICE_ATTR(host
, vport_delete
, S_IWUSR
, NULL
,
1799 store_fc_host_vport_delete
);
1802 static int fc_host_match(struct attribute_container
*cont
,
1805 struct Scsi_Host
*shost
;
1806 struct fc_internal
*i
;
1808 if (!scsi_is_host_device(dev
))
1811 shost
= dev_to_shost(dev
);
1812 if (!shost
->transportt
|| shost
->transportt
->host_attrs
.ac
.class
1813 != &fc_host_class
.class)
1816 i
= to_fc_internal(shost
->transportt
);
1818 return &i
->t
.host_attrs
.ac
== cont
;
1821 static int fc_target_match(struct attribute_container
*cont
,
1824 struct Scsi_Host
*shost
;
1825 struct fc_internal
*i
;
1827 if (!scsi_is_target_device(dev
))
1830 shost
= dev_to_shost(dev
->parent
);
1831 if (!shost
->transportt
|| shost
->transportt
->host_attrs
.ac
.class
1832 != &fc_host_class
.class)
1835 i
= to_fc_internal(shost
->transportt
);
1837 return &i
->t
.target_attrs
.ac
== cont
;
1840 static void fc_rport_dev_release(struct device
*dev
)
1842 struct fc_rport
*rport
= dev_to_rport(dev
);
1843 put_device(dev
->parent
);
1847 int scsi_is_fc_rport(const struct device
*dev
)
1849 return dev
->release
== fc_rport_dev_release
;
1851 EXPORT_SYMBOL(scsi_is_fc_rport
);
1853 static int fc_rport_match(struct attribute_container
*cont
,
1856 struct Scsi_Host
*shost
;
1857 struct fc_internal
*i
;
1859 if (!scsi_is_fc_rport(dev
))
1862 shost
= dev_to_shost(dev
->parent
);
1863 if (!shost
->transportt
|| shost
->transportt
->host_attrs
.ac
.class
1864 != &fc_host_class
.class)
1867 i
= to_fc_internal(shost
->transportt
);
1869 return &i
->rport_attr_cont
.ac
== cont
;
1873 static void fc_vport_dev_release(struct device
*dev
)
1875 struct fc_vport
*vport
= dev_to_vport(dev
);
1876 put_device(dev
->parent
); /* release kobj parent */
1880 int scsi_is_fc_vport(const struct device
*dev
)
1882 return dev
->release
== fc_vport_dev_release
;
1884 EXPORT_SYMBOL(scsi_is_fc_vport
);
1886 static int fc_vport_match(struct attribute_container
*cont
,
1889 struct fc_vport
*vport
;
1890 struct Scsi_Host
*shost
;
1891 struct fc_internal
*i
;
1893 if (!scsi_is_fc_vport(dev
))
1895 vport
= dev_to_vport(dev
);
1897 shost
= vport_to_shost(vport
);
1898 if (!shost
->transportt
|| shost
->transportt
->host_attrs
.ac
.class
1899 != &fc_host_class
.class)
1902 i
= to_fc_internal(shost
->transportt
);
1903 return &i
->vport_attr_cont
.ac
== cont
;
1908 * fc_timed_out - FC Transport I/O timeout intercept handler
1909 * @scmd: The SCSI command which timed out
1911 * This routine protects against error handlers getting invoked while a
1912 * rport is in a blocked state, typically due to a temporarily loss of
1913 * connectivity. If the error handlers are allowed to proceed, requests
1914 * to abort i/o, reset the target, etc will likely fail as there is no way
1915 * to communicate with the device to perform the requested function. These
1916 * failures may result in the midlayer taking the device offline, requiring
1917 * manual intervention to restore operation.
1919 * This routine, called whenever an i/o times out, validates the state of
1920 * the underlying rport. If the rport is blocked, it returns
1921 * EH_RESET_TIMER, which will continue to reschedule the timeout.
1922 * Eventually, either the device will return, or devloss_tmo will fire,
1923 * and when the timeout then fires, it will be handled normally.
1924 * If the rport is not blocked, normal error handling continues.
1927 * This routine assumes no locks are held on entry.
1929 static enum blk_eh_timer_return
1930 fc_timed_out(struct scsi_cmnd
*scmd
)
1932 struct fc_rport
*rport
= starget_to_rport(scsi_target(scmd
->device
));
1934 if (rport
->port_state
== FC_PORTSTATE_BLOCKED
)
1935 return BLK_EH_RESET_TIMER
;
1937 return BLK_EH_NOT_HANDLED
;
1941 * Called by fc_user_scan to locate an rport on the shost that
1942 * matches the channel and target id, and invoke scsi_scan_target()
1946 fc_user_scan_tgt(struct Scsi_Host
*shost
, uint channel
, uint id
, uint lun
)
1948 struct fc_rport
*rport
;
1949 unsigned long flags
;
1951 spin_lock_irqsave(shost
->host_lock
, flags
);
1953 list_for_each_entry(rport
, &fc_host_rports(shost
), peers
) {
1954 if (rport
->scsi_target_id
== -1)
1957 if (rport
->port_state
!= FC_PORTSTATE_ONLINE
)
1960 if ((channel
== rport
->channel
) &&
1961 (id
== rport
->scsi_target_id
)) {
1962 spin_unlock_irqrestore(shost
->host_lock
, flags
);
1963 scsi_scan_target(&rport
->dev
, channel
, id
, lun
, 1);
1968 spin_unlock_irqrestore(shost
->host_lock
, flags
);
1972 * Called via sysfs scan routines. Necessary, as the FC transport
1973 * wants to place all target objects below the rport object. So this
1974 * routine must invoke the scsi_scan_target() routine with the rport
1975 * object as the parent.
1978 fc_user_scan(struct Scsi_Host
*shost
, uint channel
, uint id
, uint lun
)
1983 if (((channel
!= SCAN_WILD_CARD
) && (channel
> shost
->max_channel
)) ||
1984 ((id
!= SCAN_WILD_CARD
) && (id
>= shost
->max_id
)) ||
1985 ((lun
!= SCAN_WILD_CARD
) && (lun
> shost
->max_lun
)))
1988 if (channel
== SCAN_WILD_CARD
) {
1990 chhi
= shost
->max_channel
+ 1;
1996 if (id
== SCAN_WILD_CARD
) {
1998 tgthi
= shost
->max_id
;
2004 for ( ; chlo
< chhi
; chlo
++)
2005 for ( ; tgtlo
< tgthi
; tgtlo
++)
2006 fc_user_scan_tgt(shost
, chlo
, tgtlo
, lun
);
2011 static int fc_tsk_mgmt_response(struct Scsi_Host
*shost
, u64 nexus
, u64 tm_id
,
2014 struct fc_internal
*i
= to_fc_internal(shost
->transportt
);
2015 return i
->f
->tsk_mgmt_response(shost
, nexus
, tm_id
, result
);
2018 static int fc_it_nexus_response(struct Scsi_Host
*shost
, u64 nexus
, int result
)
2020 struct fc_internal
*i
= to_fc_internal(shost
->transportt
);
2021 return i
->f
->it_nexus_response(shost
, nexus
, result
);
2024 struct scsi_transport_template
*
2025 fc_attach_transport(struct fc_function_template
*ft
)
2028 struct fc_internal
*i
= kzalloc(sizeof(struct fc_internal
),
2034 i
->t
.target_attrs
.ac
.attrs
= &i
->starget_attrs
[0];
2035 i
->t
.target_attrs
.ac
.class = &fc_transport_class
.class;
2036 i
->t
.target_attrs
.ac
.match
= fc_target_match
;
2037 i
->t
.target_size
= sizeof(struct fc_starget_attrs
);
2038 transport_container_register(&i
->t
.target_attrs
);
2040 i
->t
.host_attrs
.ac
.attrs
= &i
->host_attrs
[0];
2041 i
->t
.host_attrs
.ac
.class = &fc_host_class
.class;
2042 i
->t
.host_attrs
.ac
.match
= fc_host_match
;
2043 i
->t
.host_size
= sizeof(struct fc_host_attrs
);
2044 if (ft
->get_fc_host_stats
)
2045 i
->t
.host_attrs
.statistics
= &fc_statistics_group
;
2046 transport_container_register(&i
->t
.host_attrs
);
2048 i
->rport_attr_cont
.ac
.attrs
= &i
->rport_attrs
[0];
2049 i
->rport_attr_cont
.ac
.class = &fc_rport_class
.class;
2050 i
->rport_attr_cont
.ac
.match
= fc_rport_match
;
2051 transport_container_register(&i
->rport_attr_cont
);
2053 i
->vport_attr_cont
.ac
.attrs
= &i
->vport_attrs
[0];
2054 i
->vport_attr_cont
.ac
.class = &fc_vport_class
.class;
2055 i
->vport_attr_cont
.ac
.match
= fc_vport_match
;
2056 transport_container_register(&i
->vport_attr_cont
);
2060 /* Transport uses the shost workq for scsi scanning */
2061 i
->t
.create_work_queue
= 1;
2063 i
->t
.eh_timed_out
= fc_timed_out
;
2065 i
->t
.user_scan
= fc_user_scan
;
2067 /* target-mode drivers' functions */
2068 i
->t
.tsk_mgmt_response
= fc_tsk_mgmt_response
;
2069 i
->t
.it_nexus_response
= fc_it_nexus_response
;
2072 * Setup SCSI Target Attributes.
2075 SETUP_STARGET_ATTRIBUTE_RD(node_name
);
2076 SETUP_STARGET_ATTRIBUTE_RD(port_name
);
2077 SETUP_STARGET_ATTRIBUTE_RD(port_id
);
2079 BUG_ON(count
> FC_STARGET_NUM_ATTRS
);
2081 i
->starget_attrs
[count
] = NULL
;
2085 * Setup SCSI Host Attributes.
2088 SETUP_HOST_ATTRIBUTE_RD(node_name
);
2089 SETUP_HOST_ATTRIBUTE_RD(port_name
);
2090 SETUP_HOST_ATTRIBUTE_RD(permanent_port_name
);
2091 SETUP_HOST_ATTRIBUTE_RD(supported_classes
);
2092 SETUP_HOST_ATTRIBUTE_RD(supported_fc4s
);
2093 SETUP_HOST_ATTRIBUTE_RD(supported_speeds
);
2094 SETUP_HOST_ATTRIBUTE_RD(maxframe_size
);
2095 if (ft
->vport_create
) {
2096 SETUP_HOST_ATTRIBUTE_RD_NS(max_npiv_vports
);
2097 SETUP_HOST_ATTRIBUTE_RD_NS(npiv_vports_inuse
);
2099 SETUP_HOST_ATTRIBUTE_RD(serial_number
);
2101 SETUP_HOST_ATTRIBUTE_RD(port_id
);
2102 SETUP_HOST_ATTRIBUTE_RD(port_type
);
2103 SETUP_HOST_ATTRIBUTE_RD(port_state
);
2104 SETUP_HOST_ATTRIBUTE_RD(active_fc4s
);
2105 SETUP_HOST_ATTRIBUTE_RD(speed
);
2106 SETUP_HOST_ATTRIBUTE_RD(fabric_name
);
2107 SETUP_HOST_ATTRIBUTE_RD(symbolic_name
);
2108 SETUP_HOST_ATTRIBUTE_RW(system_hostname
);
2110 /* Transport-managed attributes */
2111 SETUP_PRIVATE_HOST_ATTRIBUTE_RW(tgtid_bind_type
);
2112 if (ft
->issue_fc_host_lip
)
2113 SETUP_PRIVATE_HOST_ATTRIBUTE_RW(issue_lip
);
2114 if (ft
->vport_create
)
2115 SETUP_PRIVATE_HOST_ATTRIBUTE_RW(vport_create
);
2116 if (ft
->vport_delete
)
2117 SETUP_PRIVATE_HOST_ATTRIBUTE_RW(vport_delete
);
2119 BUG_ON(count
> FC_HOST_NUM_ATTRS
);
2121 i
->host_attrs
[count
] = NULL
;
2124 * Setup Remote Port Attributes.
2127 SETUP_RPORT_ATTRIBUTE_RD(maxframe_size
);
2128 SETUP_RPORT_ATTRIBUTE_RD(supported_classes
);
2129 SETUP_RPORT_ATTRIBUTE_RW(dev_loss_tmo
);
2130 SETUP_PRIVATE_RPORT_ATTRIBUTE_RD(node_name
);
2131 SETUP_PRIVATE_RPORT_ATTRIBUTE_RD(port_name
);
2132 SETUP_PRIVATE_RPORT_ATTRIBUTE_RD(port_id
);
2133 SETUP_PRIVATE_RPORT_ATTRIBUTE_RD(roles
);
2134 SETUP_PRIVATE_RPORT_ATTRIBUTE_RD(port_state
);
2135 SETUP_PRIVATE_RPORT_ATTRIBUTE_RD(scsi_target_id
);
2136 if (ft
->terminate_rport_io
)
2137 SETUP_PRIVATE_RPORT_ATTRIBUTE_RW(fast_io_fail_tmo
);
2139 BUG_ON(count
> FC_RPORT_NUM_ATTRS
);
2141 i
->rport_attrs
[count
] = NULL
;
2144 * Setup Virtual Port Attributes.
2147 SETUP_PRIVATE_VPORT_ATTRIBUTE_RD(vport_state
);
2148 SETUP_PRIVATE_VPORT_ATTRIBUTE_RD(vport_last_state
);
2149 SETUP_PRIVATE_VPORT_ATTRIBUTE_RD(node_name
);
2150 SETUP_PRIVATE_VPORT_ATTRIBUTE_RD(port_name
);
2151 SETUP_PRIVATE_VPORT_ATTRIBUTE_RD(roles
);
2152 SETUP_PRIVATE_VPORT_ATTRIBUTE_RD(vport_type
);
2153 SETUP_VPORT_ATTRIBUTE_RW(symbolic_name
);
2154 SETUP_VPORT_ATTRIBUTE_WR(vport_delete
);
2155 SETUP_VPORT_ATTRIBUTE_WR(vport_disable
);
2157 BUG_ON(count
> FC_VPORT_NUM_ATTRS
);
2159 i
->vport_attrs
[count
] = NULL
;
2163 EXPORT_SYMBOL(fc_attach_transport
);
2165 void fc_release_transport(struct scsi_transport_template
*t
)
2167 struct fc_internal
*i
= to_fc_internal(t
);
2169 transport_container_unregister(&i
->t
.target_attrs
);
2170 transport_container_unregister(&i
->t
.host_attrs
);
2171 transport_container_unregister(&i
->rport_attr_cont
);
2172 transport_container_unregister(&i
->vport_attr_cont
);
2176 EXPORT_SYMBOL(fc_release_transport
);
2179 * fc_queue_work - Queue work to the fc_host workqueue.
2180 * @shost: Pointer to Scsi_Host bound to fc_host.
2181 * @work: Work to queue for execution.
2184 * 1 - work queued for execution
2185 * 0 - work is already queued
2186 * -EINVAL - work queue doesn't exist
2189 fc_queue_work(struct Scsi_Host
*shost
, struct work_struct
*work
)
2191 if (unlikely(!fc_host_work_q(shost
))) {
2193 "ERROR: FC host '%s' attempted to queue work, "
2194 "when no workqueue created.\n", shost
->hostt
->name
);
2200 return queue_work(fc_host_work_q(shost
), work
);
2204 * fc_flush_work - Flush a fc_host's workqueue.
2205 * @shost: Pointer to Scsi_Host bound to fc_host.
2208 fc_flush_work(struct Scsi_Host
*shost
)
2210 if (!fc_host_work_q(shost
)) {
2212 "ERROR: FC host '%s' attempted to flush work, "
2213 "when no workqueue created.\n", shost
->hostt
->name
);
2218 flush_workqueue(fc_host_work_q(shost
));
2222 * fc_queue_devloss_work - Schedule work for the fc_host devloss workqueue.
2223 * @shost: Pointer to Scsi_Host bound to fc_host.
2224 * @work: Work to queue for execution.
2225 * @delay: jiffies to delay the work queuing
2228 * 1 on success / 0 already queued / < 0 for error
2231 fc_queue_devloss_work(struct Scsi_Host
*shost
, struct delayed_work
*work
,
2232 unsigned long delay
)
2234 if (unlikely(!fc_host_devloss_work_q(shost
))) {
2236 "ERROR: FC host '%s' attempted to queue work, "
2237 "when no workqueue created.\n", shost
->hostt
->name
);
2243 return queue_delayed_work(fc_host_devloss_work_q(shost
), work
, delay
);
2247 * fc_flush_devloss - Flush a fc_host's devloss workqueue.
2248 * @shost: Pointer to Scsi_Host bound to fc_host.
2251 fc_flush_devloss(struct Scsi_Host
*shost
)
2253 if (!fc_host_devloss_work_q(shost
)) {
2255 "ERROR: FC host '%s' attempted to flush work, "
2256 "when no workqueue created.\n", shost
->hostt
->name
);
2261 flush_workqueue(fc_host_devloss_work_q(shost
));
2266 * fc_remove_host - called to terminate any fc_transport-related elements for a scsi host.
2267 * @shost: Which &Scsi_Host
2269 * This routine is expected to be called immediately preceeding the
2270 * a driver's call to scsi_remove_host().
2272 * WARNING: A driver utilizing the fc_transport, which fails to call
2273 * this routine prior to scsi_remove_host(), will leave dangling
2274 * objects in /sys/class/fc_remote_ports. Access to any of these
2275 * objects can result in a system crash !!!
2278 * This routine assumes no locks are held on entry.
2281 fc_remove_host(struct Scsi_Host
*shost
)
2283 struct fc_vport
*vport
= NULL
, *next_vport
= NULL
;
2284 struct fc_rport
*rport
= NULL
, *next_rport
= NULL
;
2285 struct workqueue_struct
*work_q
;
2286 struct fc_host_attrs
*fc_host
= shost_to_fc_host(shost
);
2287 unsigned long flags
;
2289 spin_lock_irqsave(shost
->host_lock
, flags
);
2291 /* Remove any vports */
2292 list_for_each_entry_safe(vport
, next_vport
, &fc_host
->vports
, peers
)
2293 fc_queue_work(shost
, &vport
->vport_delete_work
);
2295 /* Remove any remote ports */
2296 list_for_each_entry_safe(rport
, next_rport
,
2297 &fc_host
->rports
, peers
) {
2298 list_del(&rport
->peers
);
2299 rport
->port_state
= FC_PORTSTATE_DELETED
;
2300 fc_queue_work(shost
, &rport
->rport_delete_work
);
2303 list_for_each_entry_safe(rport
, next_rport
,
2304 &fc_host
->rport_bindings
, peers
) {
2305 list_del(&rport
->peers
);
2306 rport
->port_state
= FC_PORTSTATE_DELETED
;
2307 fc_queue_work(shost
, &rport
->rport_delete_work
);
2310 spin_unlock_irqrestore(shost
->host_lock
, flags
);
2312 /* flush all scan work items */
2313 scsi_flush_work(shost
);
2315 /* flush all stgt delete, and rport delete work items, then kill it */
2316 if (fc_host
->work_q
) {
2317 work_q
= fc_host
->work_q
;
2318 fc_host
->work_q
= NULL
;
2319 destroy_workqueue(work_q
);
2322 /* flush all devloss work items, then kill it */
2323 if (fc_host
->devloss_work_q
) {
2324 work_q
= fc_host
->devloss_work_q
;
2325 fc_host
->devloss_work_q
= NULL
;
2326 destroy_workqueue(work_q
);
2329 EXPORT_SYMBOL(fc_remove_host
);
2333 * fc_starget_delete - called to delete the scsi decendents of an rport
2334 * @work: remote port to be operated on.
2336 * Deletes target and all sdevs.
2339 fc_starget_delete(struct work_struct
*work
)
2341 struct fc_rport
*rport
=
2342 container_of(work
, struct fc_rport
, stgt_delete_work
);
2343 struct Scsi_Host
*shost
= rport_to_shost(rport
);
2344 struct fc_internal
*i
= to_fc_internal(shost
->transportt
);
2346 /* Involve the LLDD if possible to terminate all io on the rport. */
2347 if (i
->f
->terminate_rport_io
)
2348 i
->f
->terminate_rport_io(rport
);
2350 scsi_remove_target(&rport
->dev
);
2355 * fc_rport_final_delete - finish rport termination and delete it.
2356 * @work: remote port to be deleted.
2359 fc_rport_final_delete(struct work_struct
*work
)
2361 struct fc_rport
*rport
=
2362 container_of(work
, struct fc_rport
, rport_delete_work
);
2363 struct device
*dev
= &rport
->dev
;
2364 struct Scsi_Host
*shost
= rport_to_shost(rport
);
2365 struct fc_internal
*i
= to_fc_internal(shost
->transportt
);
2366 unsigned long flags
;
2369 * if a scan is pending, flush the SCSI Host work_q so that
2370 * that we can reclaim the rport scan work element.
2372 if (rport
->flags
& FC_RPORT_SCAN_PENDING
)
2373 scsi_flush_work(shost
);
2375 /* involve the LLDD to terminate all pending i/o */
2376 if (i
->f
->terminate_rport_io
)
2377 i
->f
->terminate_rport_io(rport
);
2380 * Cancel any outstanding timers. These should really exist
2381 * only when rmmod'ing the LLDD and we're asking for
2382 * immediate termination of the rports
2384 spin_lock_irqsave(shost
->host_lock
, flags
);
2385 if (rport
->flags
& FC_RPORT_DEVLOSS_PENDING
) {
2386 spin_unlock_irqrestore(shost
->host_lock
, flags
);
2387 if (!cancel_delayed_work(&rport
->fail_io_work
))
2388 fc_flush_devloss(shost
);
2389 if (!cancel_delayed_work(&rport
->dev_loss_work
))
2390 fc_flush_devloss(shost
);
2391 spin_lock_irqsave(shost
->host_lock
, flags
);
2392 rport
->flags
&= ~FC_RPORT_DEVLOSS_PENDING
;
2394 spin_unlock_irqrestore(shost
->host_lock
, flags
);
2396 /* Delete SCSI target and sdevs */
2397 if (rport
->scsi_target_id
!= -1)
2398 fc_starget_delete(&rport
->stgt_delete_work
);
2401 * Notify the driver that the rport is now dead. The LLDD will
2402 * also guarantee that any communication to the rport is terminated
2404 if (i
->f
->dev_loss_tmo_callbk
)
2405 i
->f
->dev_loss_tmo_callbk(rport
);
2407 transport_remove_device(dev
);
2409 transport_destroy_device(dev
);
2410 put_device(&shost
->shost_gendev
); /* for fc_host->rport list */
2411 put_device(dev
); /* for self-reference */
2416 * fc_rport_create - allocates and creates a remote FC port.
2417 * @shost: scsi host the remote port is connected to.
2418 * @channel: Channel on shost port connected to.
2419 * @ids: The world wide names, fc address, and FC4 port
2420 * roles for the remote port.
2422 * Allocates and creates the remoter port structure, including the
2423 * class and sysfs creation.
2426 * This routine assumes no locks are held on entry.
2428 static struct fc_rport
*
2429 fc_rport_create(struct Scsi_Host
*shost
, int channel
,
2430 struct fc_rport_identifiers
*ids
)
2432 struct fc_host_attrs
*fc_host
= shost_to_fc_host(shost
);
2433 struct fc_internal
*fci
= to_fc_internal(shost
->transportt
);
2434 struct fc_rport
*rport
;
2436 unsigned long flags
;
2440 size
= (sizeof(struct fc_rport
) + fci
->f
->dd_fcrport_size
);
2441 rport
= kzalloc(size
, GFP_KERNEL
);
2442 if (unlikely(!rport
)) {
2443 printk(KERN_ERR
"%s: allocation failure\n", __func__
);
2447 rport
->maxframe_size
= -1;
2448 rport
->supported_classes
= FC_COS_UNSPECIFIED
;
2449 rport
->dev_loss_tmo
= fc_dev_loss_tmo
;
2450 memcpy(&rport
->node_name
, &ids
->node_name
, sizeof(rport
->node_name
));
2451 memcpy(&rport
->port_name
, &ids
->port_name
, sizeof(rport
->port_name
));
2452 rport
->port_id
= ids
->port_id
;
2453 rport
->roles
= ids
->roles
;
2454 rport
->port_state
= FC_PORTSTATE_ONLINE
;
2455 if (fci
->f
->dd_fcrport_size
)
2456 rport
->dd_data
= &rport
[1];
2457 rport
->channel
= channel
;
2458 rport
->fast_io_fail_tmo
= -1;
2460 INIT_DELAYED_WORK(&rport
->dev_loss_work
, fc_timeout_deleted_rport
);
2461 INIT_DELAYED_WORK(&rport
->fail_io_work
, fc_timeout_fail_rport_io
);
2462 INIT_WORK(&rport
->scan_work
, fc_scsi_scan_rport
);
2463 INIT_WORK(&rport
->stgt_delete_work
, fc_starget_delete
);
2464 INIT_WORK(&rport
->rport_delete_work
, fc_rport_final_delete
);
2466 spin_lock_irqsave(shost
->host_lock
, flags
);
2468 rport
->number
= fc_host
->next_rport_number
++;
2469 if (rport
->roles
& FC_PORT_ROLE_FCP_TARGET
)
2470 rport
->scsi_target_id
= fc_host
->next_target_id
++;
2472 rport
->scsi_target_id
= -1;
2473 list_add_tail(&rport
->peers
, &fc_host
->rports
);
2474 get_device(&shost
->shost_gendev
); /* for fc_host->rport list */
2476 spin_unlock_irqrestore(shost
->host_lock
, flags
);
2479 device_initialize(dev
); /* takes self reference */
2480 dev
->parent
= get_device(&shost
->shost_gendev
); /* parent reference */
2481 dev
->release
= fc_rport_dev_release
;
2482 sprintf(dev
->bus_id
, "rport-%d:%d-%d",
2483 shost
->host_no
, channel
, rport
->number
);
2484 transport_setup_device(dev
);
2486 error
= device_add(dev
);
2488 printk(KERN_ERR
"FC Remote Port device_add failed\n");
2491 transport_add_device(dev
);
2492 transport_configure_device(dev
);
2494 if (rport
->roles
& FC_PORT_ROLE_FCP_TARGET
) {
2495 /* initiate a scan of the target */
2496 rport
->flags
|= FC_RPORT_SCAN_PENDING
;
2497 scsi_queue_work(shost
, &rport
->scan_work
);
2503 transport_destroy_device(dev
);
2504 spin_lock_irqsave(shost
->host_lock
, flags
);
2505 list_del(&rport
->peers
);
2506 put_device(&shost
->shost_gendev
); /* for fc_host->rport list */
2507 spin_unlock_irqrestore(shost
->host_lock
, flags
);
2508 put_device(dev
->parent
);
2514 * fc_remote_port_add - notify fc transport of the existence of a remote FC port.
2515 * @shost: scsi host the remote port is connected to.
2516 * @channel: Channel on shost port connected to.
2517 * @ids: The world wide names, fc address, and FC4 port
2518 * roles for the remote port.
2520 * The LLDD calls this routine to notify the transport of the existence
2521 * of a remote port. The LLDD provides the unique identifiers (wwpn,wwn)
2522 * of the port, it's FC address (port_id), and the FC4 roles that are
2523 * active for the port.
2525 * For ports that are FCP targets (aka scsi targets), the FC transport
2526 * maintains consistent target id bindings on behalf of the LLDD.
2527 * A consistent target id binding is an assignment of a target id to
2528 * a remote port identifier, which persists while the scsi host is
2529 * attached. The remote port can disappear, then later reappear, and
2530 * it's target id assignment remains the same. This allows for shifts
2531 * in FC addressing (if binding by wwpn or wwnn) with no apparent
2532 * changes to the scsi subsystem which is based on scsi host number and
2533 * target id values. Bindings are only valid during the attachment of
2534 * the scsi host. If the host detaches, then later re-attaches, target
2535 * id bindings may change.
2537 * This routine is responsible for returning a remote port structure.
2538 * The routine will search the list of remote ports it maintains
2539 * internally on behalf of consistent target id mappings. If found, the
2540 * remote port structure will be reused. Otherwise, a new remote port
2541 * structure will be allocated.
2543 * Whenever a remote port is allocated, a new fc_remote_port class
2544 * device is created.
2546 * Should not be called from interrupt context.
2549 * This routine assumes no locks are held on entry.
2552 fc_remote_port_add(struct Scsi_Host
*shost
, int channel
,
2553 struct fc_rport_identifiers
*ids
)
2555 struct fc_internal
*fci
= to_fc_internal(shost
->transportt
);
2556 struct fc_host_attrs
*fc_host
= shost_to_fc_host(shost
);
2557 struct fc_rport
*rport
;
2558 unsigned long flags
;
2561 /* ensure any stgt delete functions are done */
2562 fc_flush_work(shost
);
2565 * Search the list of "active" rports, for an rport that has been
2566 * deleted, but we've held off the real delete while the target
2567 * is in a "blocked" state.
2569 spin_lock_irqsave(shost
->host_lock
, flags
);
2571 list_for_each_entry(rport
, &fc_host
->rports
, peers
) {
2573 if ((rport
->port_state
== FC_PORTSTATE_BLOCKED
) &&
2574 (rport
->channel
== channel
)) {
2576 switch (fc_host
->tgtid_bind_type
) {
2577 case FC_TGTID_BIND_BY_WWPN
:
2578 case FC_TGTID_BIND_NONE
:
2579 if (rport
->port_name
== ids
->port_name
)
2582 case FC_TGTID_BIND_BY_WWNN
:
2583 if (rport
->node_name
== ids
->node_name
)
2586 case FC_TGTID_BIND_BY_ID
:
2587 if (rport
->port_id
== ids
->port_id
)
2594 memcpy(&rport
->node_name
, &ids
->node_name
,
2595 sizeof(rport
->node_name
));
2596 memcpy(&rport
->port_name
, &ids
->port_name
,
2597 sizeof(rport
->port_name
));
2598 rport
->port_id
= ids
->port_id
;
2600 rport
->port_state
= FC_PORTSTATE_ONLINE
;
2601 rport
->roles
= ids
->roles
;
2603 spin_unlock_irqrestore(shost
->host_lock
, flags
);
2605 if (fci
->f
->dd_fcrport_size
)
2606 memset(rport
->dd_data
, 0,
2607 fci
->f
->dd_fcrport_size
);
2610 * If we were not a target, cancel the
2611 * io terminate and rport timers, and
2614 * If we were a target, but our new role
2615 * doesn't indicate a target, leave the
2616 * timers running expecting the role to
2617 * change as the target fully logs in. If
2618 * it doesn't, the target will be torn down.
2620 * If we were a target, and our role shows
2621 * we're still a target, cancel the timers
2622 * and kick off a scan.
2625 /* was a target, not in roles */
2626 if ((rport
->scsi_target_id
!= -1) &&
2627 (!(ids
->roles
& FC_PORT_ROLE_FCP_TARGET
)))
2631 * Stop the fail io and dev_loss timers.
2632 * If they flush, the port_state will
2633 * be checked and will NOOP the function.
2635 if (!cancel_delayed_work(&rport
->fail_io_work
))
2636 fc_flush_devloss(shost
);
2637 if (!cancel_delayed_work(&rport
->dev_loss_work
))
2638 fc_flush_devloss(shost
);
2640 spin_lock_irqsave(shost
->host_lock
, flags
);
2642 rport
->flags
&= ~FC_RPORT_DEVLOSS_PENDING
;
2644 /* if target, initiate a scan */
2645 if (rport
->scsi_target_id
!= -1) {
2646 rport
->flags
|= FC_RPORT_SCAN_PENDING
;
2647 scsi_queue_work(shost
,
2649 spin_unlock_irqrestore(shost
->host_lock
,
2651 scsi_target_unblock(&rport
->dev
);
2653 spin_unlock_irqrestore(shost
->host_lock
,
2662 * Search the bindings array
2663 * Note: if never a FCP target, you won't be on this list
2665 if (fc_host
->tgtid_bind_type
!= FC_TGTID_BIND_NONE
) {
2667 /* search for a matching consistent binding */
2669 list_for_each_entry(rport
, &fc_host
->rport_bindings
,
2671 if (rport
->channel
!= channel
)
2674 switch (fc_host
->tgtid_bind_type
) {
2675 case FC_TGTID_BIND_BY_WWPN
:
2676 if (rport
->port_name
== ids
->port_name
)
2679 case FC_TGTID_BIND_BY_WWNN
:
2680 if (rport
->node_name
== ids
->node_name
)
2683 case FC_TGTID_BIND_BY_ID
:
2684 if (rport
->port_id
== ids
->port_id
)
2687 case FC_TGTID_BIND_NONE
: /* to keep compiler happy */
2692 list_move_tail(&rport
->peers
, &fc_host
->rports
);
2698 memcpy(&rport
->node_name
, &ids
->node_name
,
2699 sizeof(rport
->node_name
));
2700 memcpy(&rport
->port_name
, &ids
->port_name
,
2701 sizeof(rport
->port_name
));
2702 rport
->port_id
= ids
->port_id
;
2703 rport
->roles
= ids
->roles
;
2704 rport
->port_state
= FC_PORTSTATE_ONLINE
;
2706 if (fci
->f
->dd_fcrport_size
)
2707 memset(rport
->dd_data
, 0,
2708 fci
->f
->dd_fcrport_size
);
2710 if (rport
->roles
& FC_PORT_ROLE_FCP_TARGET
) {
2711 /* initiate a scan of the target */
2712 rport
->flags
|= FC_RPORT_SCAN_PENDING
;
2713 scsi_queue_work(shost
, &rport
->scan_work
);
2714 spin_unlock_irqrestore(shost
->host_lock
, flags
);
2715 scsi_target_unblock(&rport
->dev
);
2717 spin_unlock_irqrestore(shost
->host_lock
, flags
);
2723 spin_unlock_irqrestore(shost
->host_lock
, flags
);
2725 /* No consistent binding found - create new remote port entry */
2726 rport
= fc_rport_create(shost
, channel
, ids
);
2730 EXPORT_SYMBOL(fc_remote_port_add
);
2734 * fc_remote_port_delete - notifies the fc transport that a remote port is no longer in existence.
2735 * @rport: The remote port that no longer exists
2737 * The LLDD calls this routine to notify the transport that a remote
2738 * port is no longer part of the topology. Note: Although a port
2739 * may no longer be part of the topology, it may persist in the remote
2740 * ports displayed by the fc_host. We do this under 2 conditions:
2741 * 1) If the port was a scsi target, we delay its deletion by "blocking" it.
2742 * This allows the port to temporarily disappear, then reappear without
2743 * disrupting the SCSI device tree attached to it. During the "blocked"
2744 * period the port will still exist.
2745 * 2) If the port was a scsi target and disappears for longer than we
2746 * expect, we'll delete the port and the tear down the SCSI device tree
2747 * attached to it. However, we want to semi-persist the target id assigned
2748 * to that port if it eventually does exist. The port structure will
2749 * remain (although with minimal information) so that the target id
2752 * If the remote port is not an FCP Target, it will be fully torn down
2753 * and deallocated, including the fc_remote_port class device.
2755 * If the remote port is an FCP Target, the port will be placed in a
2756 * temporary blocked state. From the LLDD's perspective, the rport no
2757 * longer exists. From the SCSI midlayer's perspective, the SCSI target
2758 * exists, but all sdevs on it are blocked from further I/O. The following
2761 * If the remote port does not return (signaled by a LLDD call to
2762 * fc_remote_port_add()) within the dev_loss_tmo timeout, then the
2763 * scsi target is removed - killing all outstanding i/o and removing the
2764 * scsi devices attached ot it. The port structure will be marked Not
2765 * Present and be partially cleared, leaving only enough information to
2766 * recognize the remote port relative to the scsi target id binding if
2767 * it later appears. The port will remain as long as there is a valid
2768 * binding (e.g. until the user changes the binding type or unloads the
2769 * scsi host with the binding).
2771 * If the remote port returns within the dev_loss_tmo value (and matches
2772 * according to the target id binding type), the port structure will be
2773 * reused. If it is no longer a SCSI target, the target will be torn
2774 * down. If it continues to be a SCSI target, then the target will be
2775 * unblocked (allowing i/o to be resumed), and a scan will be activated
2776 * to ensure that all luns are detected.
2778 * Called from normal process context only - cannot be called from interrupt.
2781 * This routine assumes no locks are held on entry.
2784 fc_remote_port_delete(struct fc_rport
*rport
)
2786 struct Scsi_Host
*shost
= rport_to_shost(rport
);
2787 struct fc_internal
*i
= to_fc_internal(shost
->transportt
);
2788 int timeout
= rport
->dev_loss_tmo
;
2789 unsigned long flags
;
2792 * No need to flush the fc_host work_q's, as all adds are synchronous.
2794 * We do need to reclaim the rport scan work element, so eventually
2795 * (in fc_rport_final_delete()) we'll flush the scsi host work_q if
2796 * there's still a scan pending.
2799 spin_lock_irqsave(shost
->host_lock
, flags
);
2801 if (rport
->port_state
!= FC_PORTSTATE_ONLINE
) {
2802 spin_unlock_irqrestore(shost
->host_lock
, flags
);
2807 * In the past, we if this was not an FCP-Target, we would
2808 * unconditionally just jump to deleting the rport.
2809 * However, rports can be used as node containers by the LLDD,
2810 * and its not appropriate to just terminate the rport at the
2811 * first sign of a loss in connectivity. The LLDD may want to
2812 * send ELS traffic to re-validate the login. If the rport is
2813 * immediately deleted, it makes it inappropriate for a node
2815 * So... we now unconditionally wait dev_loss_tmo before
2816 * destroying an rport.
2819 rport
->port_state
= FC_PORTSTATE_BLOCKED
;
2821 rport
->flags
|= FC_RPORT_DEVLOSS_PENDING
;
2823 spin_unlock_irqrestore(shost
->host_lock
, flags
);
2825 if (rport
->roles
& FC_PORT_ROLE_FCP_INITIATOR
&&
2826 shost
->active_mode
& MODE_TARGET
)
2827 fc_tgt_it_nexus_destroy(shost
, (unsigned long)rport
);
2829 scsi_target_block(&rport
->dev
);
2831 /* see if we need to kill io faster than waiting for device loss */
2832 if ((rport
->fast_io_fail_tmo
!= -1) &&
2833 (rport
->fast_io_fail_tmo
< timeout
) && (i
->f
->terminate_rport_io
))
2834 fc_queue_devloss_work(shost
, &rport
->fail_io_work
,
2835 rport
->fast_io_fail_tmo
* HZ
);
2837 /* cap the length the devices can be blocked until they are deleted */
2838 fc_queue_devloss_work(shost
, &rport
->dev_loss_work
, timeout
* HZ
);
2840 EXPORT_SYMBOL(fc_remote_port_delete
);
2843 * fc_remote_port_rolechg - notifies the fc transport that the roles on a remote may have changed.
2844 * @rport: The remote port that changed.
2845 * @roles: New roles for this port.
2847 * Description: The LLDD calls this routine to notify the transport that the
2848 * roles on a remote port may have changed. The largest effect of this is
2849 * if a port now becomes a FCP Target, it must be allocated a
2850 * scsi target id. If the port is no longer a FCP target, any
2851 * scsi target id value assigned to it will persist in case the
2852 * role changes back to include FCP Target. No changes in the scsi
2853 * midlayer will be invoked if the role changes (in the expectation
2854 * that the role will be resumed. If it doesn't normal error processing
2857 * Should not be called from interrupt context.
2860 * This routine assumes no locks are held on entry.
2863 fc_remote_port_rolechg(struct fc_rport
*rport
, u32 roles
)
2865 struct Scsi_Host
*shost
= rport_to_shost(rport
);
2866 struct fc_host_attrs
*fc_host
= shost_to_fc_host(shost
);
2867 unsigned long flags
;
2871 spin_lock_irqsave(shost
->host_lock
, flags
);
2872 if (roles
& FC_PORT_ROLE_FCP_TARGET
) {
2873 if (rport
->scsi_target_id
== -1) {
2874 rport
->scsi_target_id
= fc_host
->next_target_id
++;
2876 } else if (!(rport
->roles
& FC_PORT_ROLE_FCP_TARGET
))
2878 } else if (shost
->active_mode
& MODE_TARGET
) {
2879 ret
= fc_tgt_it_nexus_create(shost
, (unsigned long)rport
,
2880 (char *)&rport
->node_name
);
2882 printk(KERN_ERR
"FC Remore Port tgt nexus failed %d\n",
2886 rport
->roles
= roles
;
2888 spin_unlock_irqrestore(shost
->host_lock
, flags
);
2892 * There may have been a delete timer running on the
2893 * port. Ensure that it is cancelled as we now know
2894 * the port is an FCP Target.
2895 * Note: we know the rport is exists and in an online
2896 * state as the LLDD would not have had an rport
2897 * reference to pass us.
2899 * Take no action on the del_timer failure as the state
2900 * machine state change will validate the
2903 if (!cancel_delayed_work(&rport
->fail_io_work
))
2904 fc_flush_devloss(shost
);
2905 if (!cancel_delayed_work(&rport
->dev_loss_work
))
2906 fc_flush_devloss(shost
);
2908 spin_lock_irqsave(shost
->host_lock
, flags
);
2909 rport
->flags
&= ~FC_RPORT_DEVLOSS_PENDING
;
2910 spin_unlock_irqrestore(shost
->host_lock
, flags
);
2912 /* ensure any stgt delete functions are done */
2913 fc_flush_work(shost
);
2915 /* initiate a scan of the target */
2916 spin_lock_irqsave(shost
->host_lock
, flags
);
2917 rport
->flags
|= FC_RPORT_SCAN_PENDING
;
2918 scsi_queue_work(shost
, &rport
->scan_work
);
2919 spin_unlock_irqrestore(shost
->host_lock
, flags
);
2920 scsi_target_unblock(&rport
->dev
);
2923 EXPORT_SYMBOL(fc_remote_port_rolechg
);
2926 * fc_timeout_deleted_rport - Timeout handler for a deleted remote port.
2927 * @work: rport target that failed to reappear in the allotted time.
2929 * Description: An attempt to delete a remote port blocks, and if it fails
2930 * to return in the allotted time this gets called.
2933 fc_timeout_deleted_rport(struct work_struct
*work
)
2935 struct fc_rport
*rport
=
2936 container_of(work
, struct fc_rport
, dev_loss_work
.work
);
2937 struct Scsi_Host
*shost
= rport_to_shost(rport
);
2938 struct fc_host_attrs
*fc_host
= shost_to_fc_host(shost
);
2939 unsigned long flags
;
2941 spin_lock_irqsave(shost
->host_lock
, flags
);
2943 rport
->flags
&= ~FC_RPORT_DEVLOSS_PENDING
;
2946 * If the port is ONLINE, then it came back. If it was a SCSI
2947 * target, validate it still is. If not, tear down the
2948 * scsi_target on it.
2950 if ((rport
->port_state
== FC_PORTSTATE_ONLINE
) &&
2951 (rport
->scsi_target_id
!= -1) &&
2952 !(rport
->roles
& FC_PORT_ROLE_FCP_TARGET
)) {
2953 dev_printk(KERN_ERR
, &rport
->dev
,
2954 "blocked FC remote port time out: no longer"
2955 " a FCP target, removing starget\n");
2956 spin_unlock_irqrestore(shost
->host_lock
, flags
);
2957 scsi_target_unblock(&rport
->dev
);
2958 fc_queue_work(shost
, &rport
->stgt_delete_work
);
2962 /* NOOP state - we're flushing workq's */
2963 if (rport
->port_state
!= FC_PORTSTATE_BLOCKED
) {
2964 spin_unlock_irqrestore(shost
->host_lock
, flags
);
2965 dev_printk(KERN_ERR
, &rport
->dev
,
2966 "blocked FC remote port time out: leaving"
2968 (rport
->scsi_target_id
!= -1) ? " and starget" : "");
2972 if ((fc_host
->tgtid_bind_type
== FC_TGTID_BIND_NONE
) ||
2973 (rport
->scsi_target_id
== -1)) {
2974 list_del(&rport
->peers
);
2975 rport
->port_state
= FC_PORTSTATE_DELETED
;
2976 dev_printk(KERN_ERR
, &rport
->dev
,
2977 "blocked FC remote port time out: removing"
2979 (rport
->scsi_target_id
!= -1) ? " and starget" : "");
2980 fc_queue_work(shost
, &rport
->rport_delete_work
);
2981 spin_unlock_irqrestore(shost
->host_lock
, flags
);
2985 dev_printk(KERN_ERR
, &rport
->dev
,
2986 "blocked FC remote port time out: removing target and "
2987 "saving binding\n");
2989 list_move_tail(&rport
->peers
, &fc_host
->rport_bindings
);
2992 * Note: We do not remove or clear the hostdata area. This allows
2993 * host-specific target data to persist along with the
2994 * scsi_target_id. It's up to the host to manage it's hostdata area.
2998 * Reinitialize port attributes that may change if the port comes back.
3000 rport
->maxframe_size
= -1;
3001 rport
->supported_classes
= FC_COS_UNSPECIFIED
;
3002 rport
->roles
= FC_PORT_ROLE_UNKNOWN
;
3003 rport
->port_state
= FC_PORTSTATE_NOTPRESENT
;
3005 /* remove the identifiers that aren't used in the consisting binding */
3006 switch (fc_host
->tgtid_bind_type
) {
3007 case FC_TGTID_BIND_BY_WWPN
:
3008 rport
->node_name
= -1;
3009 rport
->port_id
= -1;
3011 case FC_TGTID_BIND_BY_WWNN
:
3012 rport
->port_name
= -1;
3013 rport
->port_id
= -1;
3015 case FC_TGTID_BIND_BY_ID
:
3016 rport
->node_name
= -1;
3017 rport
->port_name
= -1;
3019 case FC_TGTID_BIND_NONE
: /* to keep compiler happy */
3024 * As this only occurs if the remote port (scsi target)
3025 * went away and didn't come back - we'll remove
3026 * all attached scsi devices.
3028 spin_unlock_irqrestore(shost
->host_lock
, flags
);
3030 scsi_target_unblock(&rport
->dev
);
3031 fc_queue_work(shost
, &rport
->stgt_delete_work
);
3035 * fc_timeout_fail_rport_io - Timeout handler for a fast io failing on a disconnected SCSI target.
3036 * @work: rport to terminate io on.
3038 * Notes: Only requests the failure of the io, not that all are flushed
3039 * prior to returning.
3042 fc_timeout_fail_rport_io(struct work_struct
*work
)
3044 struct fc_rport
*rport
=
3045 container_of(work
, struct fc_rport
, fail_io_work
.work
);
3046 struct Scsi_Host
*shost
= rport_to_shost(rport
);
3047 struct fc_internal
*i
= to_fc_internal(shost
->transportt
);
3049 if (rport
->port_state
!= FC_PORTSTATE_BLOCKED
)
3052 i
->f
->terminate_rport_io(rport
);
3056 * fc_scsi_scan_rport - called to perform a scsi scan on a remote port.
3057 * @work: remote port to be scanned.
3060 fc_scsi_scan_rport(struct work_struct
*work
)
3062 struct fc_rport
*rport
=
3063 container_of(work
, struct fc_rport
, scan_work
);
3064 struct Scsi_Host
*shost
= rport_to_shost(rport
);
3065 struct fc_internal
*i
= to_fc_internal(shost
->transportt
);
3066 unsigned long flags
;
3068 if ((rport
->port_state
== FC_PORTSTATE_ONLINE
) &&
3069 (rport
->roles
& FC_PORT_ROLE_FCP_TARGET
) &&
3070 !(i
->f
->disable_target_scan
)) {
3071 scsi_scan_target(&rport
->dev
, rport
->channel
,
3072 rport
->scsi_target_id
, SCAN_WILD_CARD
, 1);
3075 spin_lock_irqsave(shost
->host_lock
, flags
);
3076 rport
->flags
&= ~FC_RPORT_SCAN_PENDING
;
3077 spin_unlock_irqrestore(shost
->host_lock
, flags
);
3082 * fc_vport_setup - allocates and creates a FC virtual port.
3083 * @shost: scsi host the virtual port is connected to.
3084 * @channel: Channel on shost port connected to.
3085 * @pdev: parent device for vport
3086 * @ids: The world wide names, FC4 port roles, etc for
3088 * @ret_vport: The pointer to the created vport.
3090 * Allocates and creates the vport structure, calls the parent host
3091 * to instantiate the vport, the completes w/ class and sysfs creation.
3094 * This routine assumes no locks are held on entry.
3097 fc_vport_setup(struct Scsi_Host
*shost
, int channel
, struct device
*pdev
,
3098 struct fc_vport_identifiers
*ids
, struct fc_vport
**ret_vport
)
3100 struct fc_host_attrs
*fc_host
= shost_to_fc_host(shost
);
3101 struct fc_internal
*fci
= to_fc_internal(shost
->transportt
);
3102 struct fc_vport
*vport
;
3104 unsigned long flags
;
3110 if ( ! fci
->f
->vport_create
)
3113 size
= (sizeof(struct fc_vport
) + fci
->f
->dd_fcvport_size
);
3114 vport
= kzalloc(size
, GFP_KERNEL
);
3115 if (unlikely(!vport
)) {
3116 printk(KERN_ERR
"%s: allocation failure\n", __func__
);
3120 vport
->vport_state
= FC_VPORT_UNKNOWN
;
3121 vport
->vport_last_state
= FC_VPORT_UNKNOWN
;
3122 vport
->node_name
= ids
->node_name
;
3123 vport
->port_name
= ids
->port_name
;
3124 vport
->roles
= ids
->roles
;
3125 vport
->vport_type
= ids
->vport_type
;
3126 if (fci
->f
->dd_fcvport_size
)
3127 vport
->dd_data
= &vport
[1];
3128 vport
->shost
= shost
;
3129 vport
->channel
= channel
;
3130 vport
->flags
= FC_VPORT_CREATING
;
3131 INIT_WORK(&vport
->vport_delete_work
, fc_vport_sched_delete
);
3133 spin_lock_irqsave(shost
->host_lock
, flags
);
3135 if (fc_host
->npiv_vports_inuse
>= fc_host
->max_npiv_vports
) {
3136 spin_unlock_irqrestore(shost
->host_lock
, flags
);
3140 fc_host
->npiv_vports_inuse
++;
3141 vport
->number
= fc_host
->next_vport_number
++;
3142 list_add_tail(&vport
->peers
, &fc_host
->vports
);
3143 get_device(&shost
->shost_gendev
); /* for fc_host->vport list */
3145 spin_unlock_irqrestore(shost
->host_lock
, flags
);
3148 device_initialize(dev
); /* takes self reference */
3149 dev
->parent
= get_device(pdev
); /* takes parent reference */
3150 dev
->release
= fc_vport_dev_release
;
3151 sprintf(dev
->bus_id
, "vport-%d:%d-%d",
3152 shost
->host_no
, channel
, vport
->number
);
3153 transport_setup_device(dev
);
3155 error
= device_add(dev
);
3157 printk(KERN_ERR
"FC Virtual Port device_add failed\n");
3160 transport_add_device(dev
);
3161 transport_configure_device(dev
);
3163 error
= fci
->f
->vport_create(vport
, ids
->disable
);
3165 printk(KERN_ERR
"FC Virtual Port LLDD Create failed\n");
3166 goto delete_vport_all
;
3170 * if the parent isn't the physical adapter's Scsi_Host, ensure
3171 * the Scsi_Host at least contains ia symlink to the vport.
3173 if (pdev
!= &shost
->shost_gendev
) {
3174 error
= sysfs_create_link(&shost
->shost_gendev
.kobj
,
3175 &dev
->kobj
, dev
->bus_id
);
3178 "%s: Cannot create vport symlinks for "
3180 __func__
, dev
->bus_id
, error
);
3182 spin_lock_irqsave(shost
->host_lock
, flags
);
3183 vport
->flags
&= ~FC_VPORT_CREATING
;
3184 spin_unlock_irqrestore(shost
->host_lock
, flags
);
3186 dev_printk(KERN_NOTICE
, pdev
,
3187 "%s created via shost%d channel %d\n", dev
->bus_id
,
3188 shost
->host_no
, channel
);
3195 transport_remove_device(dev
);
3198 transport_destroy_device(dev
);
3199 spin_lock_irqsave(shost
->host_lock
, flags
);
3200 list_del(&vport
->peers
);
3201 put_device(&shost
->shost_gendev
); /* for fc_host->vport list */
3202 fc_host
->npiv_vports_inuse
--;
3203 spin_unlock_irqrestore(shost
->host_lock
, flags
);
3204 put_device(dev
->parent
);
3211 * fc_vport_create - Admin App or LLDD requests creation of a vport
3212 * @shost: scsi host the virtual port is connected to.
3213 * @channel: channel on shost port connected to.
3214 * @ids: The world wide names, FC4 port roles, etc for
3218 * This routine assumes no locks are held on entry.
3221 fc_vport_create(struct Scsi_Host
*shost
, int channel
,
3222 struct fc_vport_identifiers
*ids
)
3225 struct fc_vport
*vport
;
3227 stat
= fc_vport_setup(shost
, channel
, &shost
->shost_gendev
,
3229 return stat
? NULL
: vport
;
3231 EXPORT_SYMBOL(fc_vport_create
);
3234 * fc_vport_terminate - Admin App or LLDD requests termination of a vport
3235 * @vport: fc_vport to be terminated
3237 * Calls the LLDD vport_delete() function, then deallocates and removes
3238 * the vport from the shost and object tree.
3241 * This routine assumes no locks are held on entry.
3244 fc_vport_terminate(struct fc_vport
*vport
)
3246 struct Scsi_Host
*shost
= vport_to_shost(vport
);
3247 struct fc_host_attrs
*fc_host
= shost_to_fc_host(shost
);
3248 struct fc_internal
*i
= to_fc_internal(shost
->transportt
);
3249 struct device
*dev
= &vport
->dev
;
3250 unsigned long flags
;
3253 spin_lock_irqsave(shost
->host_lock
, flags
);
3254 if (vport
->flags
& FC_VPORT_CREATING
) {
3255 spin_unlock_irqrestore(shost
->host_lock
, flags
);
3258 if (vport
->flags
& (FC_VPORT_DEL
)) {
3259 spin_unlock_irqrestore(shost
->host_lock
, flags
);
3262 vport
->flags
|= FC_VPORT_DELETING
;
3263 spin_unlock_irqrestore(shost
->host_lock
, flags
);
3265 if (i
->f
->vport_delete
)
3266 stat
= i
->f
->vport_delete(vport
);
3270 spin_lock_irqsave(shost
->host_lock
, flags
);
3271 vport
->flags
&= ~FC_VPORT_DELETING
;
3273 vport
->flags
|= FC_VPORT_DELETED
;
3274 list_del(&vport
->peers
);
3275 fc_host
->npiv_vports_inuse
--;
3276 put_device(&shost
->shost_gendev
); /* for fc_host->vport list */
3278 spin_unlock_irqrestore(shost
->host_lock
, flags
);
3283 if (dev
->parent
!= &shost
->shost_gendev
)
3284 sysfs_remove_link(&shost
->shost_gendev
.kobj
, dev
->bus_id
);
3285 transport_remove_device(dev
);
3287 transport_destroy_device(dev
);
3290 * Removing our self-reference should mean our
3291 * release function gets called, which will drop the remaining
3292 * parent reference and free the data structure.
3294 put_device(dev
); /* for self-reference */
3296 return 0; /* SUCCESS */
3298 EXPORT_SYMBOL(fc_vport_terminate
);
3301 * fc_vport_sched_delete - workq-based delete request for a vport
3302 * @work: vport to be deleted.
3305 fc_vport_sched_delete(struct work_struct
*work
)
3307 struct fc_vport
*vport
=
3308 container_of(work
, struct fc_vport
, vport_delete_work
);
3311 stat
= fc_vport_terminate(vport
);
3313 dev_printk(KERN_ERR
, vport
->dev
.parent
,
3314 "%s: %s could not be deleted created via "
3315 "shost%d channel %d - error %d\n", __func__
,
3316 vport
->dev
.bus_id
, vport
->shost
->host_no
,
3317 vport
->channel
, stat
);
3321 /* Original Author: Martin Hicks */
3322 MODULE_AUTHOR("James Smart");
3323 MODULE_DESCRIPTION("FC Transport Attributes");
3324 MODULE_LICENSE("GPL");
3326 module_init(fc_transport_init
);
3327 module_exit(fc_transport_exit
);