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/scsi_bsg_fc.h>
39 #include "scsi_priv.h"
40 #include "scsi_transport_fc_internal.h"
42 static int fc_queue_work(struct Scsi_Host
*, struct work_struct
*);
43 static void fc_vport_sched_delete(struct work_struct
*work
);
44 static int fc_vport_setup(struct Scsi_Host
*shost
, int channel
,
45 struct device
*pdev
, struct fc_vport_identifiers
*ids
,
46 struct fc_vport
**vport
);
47 static int fc_bsg_hostadd(struct Scsi_Host
*, struct fc_host_attrs
*);
48 static int fc_bsg_rportadd(struct Scsi_Host
*, struct fc_rport
*);
49 static void fc_bsg_remove(struct request_queue
*);
50 static void fc_bsg_goose_queue(struct fc_rport
*);
53 * Redefine so that we can have same named attributes in the
54 * sdev/starget/host objects.
56 #define FC_DEVICE_ATTR(_prefix,_name,_mode,_show,_store) \
57 struct device_attribute device_attr_##_prefix##_##_name = \
58 __ATTR(_name,_mode,_show,_store)
60 #define fc_enum_name_search(title, table_type, table) \
61 static const char *get_fc_##title##_name(enum table_type table_key) \
66 for (i = 0; i < ARRAY_SIZE(table); i++) { \
67 if (table[i].value == table_key) { \
68 name = table[i].name; \
75 #define fc_enum_name_match(title, table_type, table) \
76 static int get_fc_##title##_match(const char *table_key, \
77 enum table_type *value) \
81 for (i = 0; i < ARRAY_SIZE(table); i++) { \
82 if (strncmp(table_key, table[i].name, \
83 table[i].matchlen) == 0) { \
84 *value = table[i].value; \
85 return 0; /* success */ \
88 return 1; /* failure */ \
92 /* Convert fc_port_type values to ascii string name */
94 enum fc_port_type value
;
96 } fc_port_type_names
[] = {
97 { FC_PORTTYPE_UNKNOWN
, "Unknown" },
98 { FC_PORTTYPE_OTHER
, "Other" },
99 { FC_PORTTYPE_NOTPRESENT
, "Not Present" },
100 { FC_PORTTYPE_NPORT
, "NPort (fabric via point-to-point)" },
101 { FC_PORTTYPE_NLPORT
, "NLPort (fabric via loop)" },
102 { FC_PORTTYPE_LPORT
, "LPort (private loop)" },
103 { FC_PORTTYPE_PTP
, "Point-To-Point (direct nport connection)" },
104 { FC_PORTTYPE_NPIV
, "NPIV VPORT" },
106 fc_enum_name_search(port_type
, fc_port_type
, fc_port_type_names
)
107 #define FC_PORTTYPE_MAX_NAMELEN 50
109 /* Reuse fc_port_type enum function for vport_type */
110 #define get_fc_vport_type_name get_fc_port_type_name
113 /* Convert fc_host_event_code values to ascii string name */
114 static const struct {
115 enum fc_host_event_code value
;
117 } fc_host_event_code_names
[] = {
118 { FCH_EVT_LIP
, "lip" },
119 { FCH_EVT_LINKUP
, "link_up" },
120 { FCH_EVT_LINKDOWN
, "link_down" },
121 { FCH_EVT_LIPRESET
, "lip_reset" },
122 { FCH_EVT_RSCN
, "rscn" },
123 { FCH_EVT_ADAPTER_CHANGE
, "adapter_chg" },
124 { FCH_EVT_PORT_UNKNOWN
, "port_unknown" },
125 { FCH_EVT_PORT_ONLINE
, "port_online" },
126 { FCH_EVT_PORT_OFFLINE
, "port_offline" },
127 { FCH_EVT_PORT_FABRIC
, "port_fabric" },
128 { FCH_EVT_LINK_UNKNOWN
, "link_unknown" },
129 { FCH_EVT_VENDOR_UNIQUE
, "vendor_unique" },
131 fc_enum_name_search(host_event_code
, fc_host_event_code
,
132 fc_host_event_code_names
)
133 #define FC_HOST_EVENT_CODE_MAX_NAMELEN 30
136 /* Convert fc_port_state values to ascii string name */
138 enum fc_port_state value
;
140 } fc_port_state_names
[] = {
141 { FC_PORTSTATE_UNKNOWN
, "Unknown" },
142 { FC_PORTSTATE_NOTPRESENT
, "Not Present" },
143 { FC_PORTSTATE_ONLINE
, "Online" },
144 { FC_PORTSTATE_OFFLINE
, "Offline" },
145 { FC_PORTSTATE_BLOCKED
, "Blocked" },
146 { FC_PORTSTATE_BYPASSED
, "Bypassed" },
147 { FC_PORTSTATE_DIAGNOSTICS
, "Diagnostics" },
148 { FC_PORTSTATE_LINKDOWN
, "Linkdown" },
149 { FC_PORTSTATE_ERROR
, "Error" },
150 { FC_PORTSTATE_LOOPBACK
, "Loopback" },
151 { FC_PORTSTATE_DELETED
, "Deleted" },
153 fc_enum_name_search(port_state
, fc_port_state
, fc_port_state_names
)
154 #define FC_PORTSTATE_MAX_NAMELEN 20
157 /* Convert fc_vport_state values to ascii string name */
159 enum fc_vport_state value
;
161 } fc_vport_state_names
[] = {
162 { FC_VPORT_UNKNOWN
, "Unknown" },
163 { FC_VPORT_ACTIVE
, "Active" },
164 { FC_VPORT_DISABLED
, "Disabled" },
165 { FC_VPORT_LINKDOWN
, "Linkdown" },
166 { FC_VPORT_INITIALIZING
, "Initializing" },
167 { FC_VPORT_NO_FABRIC_SUPP
, "No Fabric Support" },
168 { FC_VPORT_NO_FABRIC_RSCS
, "No Fabric Resources" },
169 { FC_VPORT_FABRIC_LOGOUT
, "Fabric Logout" },
170 { FC_VPORT_FABRIC_REJ_WWN
, "Fabric Rejected WWN" },
171 { FC_VPORT_FAILED
, "VPort Failed" },
173 fc_enum_name_search(vport_state
, fc_vport_state
, fc_vport_state_names
)
174 #define FC_VPORTSTATE_MAX_NAMELEN 24
176 /* Reuse fc_vport_state enum function for vport_last_state */
177 #define get_fc_vport_last_state_name get_fc_vport_state_name
180 /* Convert fc_tgtid_binding_type values to ascii string name */
181 static const struct {
182 enum fc_tgtid_binding_type value
;
185 } fc_tgtid_binding_type_names
[] = {
186 { FC_TGTID_BIND_NONE
, "none", 4 },
187 { FC_TGTID_BIND_BY_WWPN
, "wwpn (World Wide Port Name)", 4 },
188 { FC_TGTID_BIND_BY_WWNN
, "wwnn (World Wide Node Name)", 4 },
189 { FC_TGTID_BIND_BY_ID
, "port_id (FC Address)", 7 },
191 fc_enum_name_search(tgtid_bind_type
, fc_tgtid_binding_type
,
192 fc_tgtid_binding_type_names
)
193 fc_enum_name_match(tgtid_bind_type
, fc_tgtid_binding_type
,
194 fc_tgtid_binding_type_names
)
195 #define FC_BINDTYPE_MAX_NAMELEN 30
198 #define fc_bitfield_name_search(title, table) \
200 get_fc_##title##_names(u32 table_key, char *buf) \
206 for (i = 0; i < ARRAY_SIZE(table); i++) { \
207 if (table[i].value & table_key) { \
208 len += sprintf(buf + len, "%s%s", \
209 prefix, table[i].name); \
213 len += sprintf(buf + len, "\n"); \
218 /* Convert FC_COS bit values to ascii string name */
219 static const struct {
223 { FC_COS_CLASS1
, "Class 1" },
224 { FC_COS_CLASS2
, "Class 2" },
225 { FC_COS_CLASS3
, "Class 3" },
226 { FC_COS_CLASS4
, "Class 4" },
227 { FC_COS_CLASS6
, "Class 6" },
229 fc_bitfield_name_search(cos
, fc_cos_names
)
232 /* Convert FC_PORTSPEED bit values to ascii string name */
233 static const struct {
236 } fc_port_speed_names
[] = {
237 { FC_PORTSPEED_1GBIT
, "1 Gbit" },
238 { FC_PORTSPEED_2GBIT
, "2 Gbit" },
239 { FC_PORTSPEED_4GBIT
, "4 Gbit" },
240 { FC_PORTSPEED_10GBIT
, "10 Gbit" },
241 { FC_PORTSPEED_8GBIT
, "8 Gbit" },
242 { FC_PORTSPEED_16GBIT
, "16 Gbit" },
243 { FC_PORTSPEED_NOT_NEGOTIATED
, "Not Negotiated" },
245 fc_bitfield_name_search(port_speed
, fc_port_speed_names
)
249 show_fc_fc4s (char *buf
, u8
*fc4_list
)
253 for (i
= 0; i
< FC_FC4_LIST_SIZE
; i
++, fc4_list
++)
254 len
+= sprintf(buf
+ len
, "0x%02x ", *fc4_list
);
255 len
+= sprintf(buf
+ len
, "\n");
260 /* Convert FC_PORT_ROLE bit values to ascii string name */
261 static const struct {
264 } fc_port_role_names
[] = {
265 { FC_PORT_ROLE_FCP_TARGET
, "FCP Target" },
266 { FC_PORT_ROLE_FCP_INITIATOR
, "FCP Initiator" },
267 { FC_PORT_ROLE_IP_PORT
, "IP Port" },
269 fc_bitfield_name_search(port_roles
, fc_port_role_names
)
272 * Define roles that are specific to port_id. Values are relative to ROLE_MASK.
274 #define FC_WELLKNOWN_PORTID_MASK 0xfffff0
275 #define FC_WELLKNOWN_ROLE_MASK 0x00000f
276 #define FC_FPORT_PORTID 0x00000e
277 #define FC_FABCTLR_PORTID 0x00000d
278 #define FC_DIRSRVR_PORTID 0x00000c
279 #define FC_TIMESRVR_PORTID 0x00000b
280 #define FC_MGMTSRVR_PORTID 0x00000a
283 static void fc_timeout_deleted_rport(struct work_struct
*work
);
284 static void fc_timeout_fail_rport_io(struct work_struct
*work
);
285 static void fc_scsi_scan_rport(struct work_struct
*work
);
288 * Attribute counts pre object type...
289 * Increase these values if you add attributes
291 #define FC_STARGET_NUM_ATTRS 3
292 #define FC_RPORT_NUM_ATTRS 10
293 #define FC_VPORT_NUM_ATTRS 9
294 #define FC_HOST_NUM_ATTRS 21
297 struct scsi_transport_template t
;
298 struct fc_function_template
*f
;
301 * For attributes : each object has :
302 * An array of the actual attributes structures
303 * An array of null-terminated pointers to the attribute
304 * structures - used for mid-layer interaction.
306 * The attribute containers for the starget and host are are
307 * part of the midlayer. As the remote port is specific to the
308 * fc transport, we must provide the attribute container.
310 struct device_attribute private_starget_attrs
[
311 FC_STARGET_NUM_ATTRS
];
312 struct device_attribute
*starget_attrs
[FC_STARGET_NUM_ATTRS
+ 1];
314 struct device_attribute private_host_attrs
[FC_HOST_NUM_ATTRS
];
315 struct device_attribute
*host_attrs
[FC_HOST_NUM_ATTRS
+ 1];
317 struct transport_container rport_attr_cont
;
318 struct device_attribute private_rport_attrs
[FC_RPORT_NUM_ATTRS
];
319 struct device_attribute
*rport_attrs
[FC_RPORT_NUM_ATTRS
+ 1];
321 struct transport_container vport_attr_cont
;
322 struct device_attribute private_vport_attrs
[FC_VPORT_NUM_ATTRS
];
323 struct device_attribute
*vport_attrs
[FC_VPORT_NUM_ATTRS
+ 1];
326 #define to_fc_internal(tmpl) container_of(tmpl, struct fc_internal, t)
328 static int fc_target_setup(struct transport_container
*tc
, struct device
*dev
,
331 struct scsi_target
*starget
= to_scsi_target(dev
);
332 struct fc_rport
*rport
= starget_to_rport(starget
);
335 * if parent is remote port, use values from remote port.
336 * Otherwise, this host uses the fc_transport, but not the
337 * remote port interface. As such, initialize to known non-values.
340 fc_starget_node_name(starget
) = rport
->node_name
;
341 fc_starget_port_name(starget
) = rport
->port_name
;
342 fc_starget_port_id(starget
) = rport
->port_id
;
344 fc_starget_node_name(starget
) = -1;
345 fc_starget_port_name(starget
) = -1;
346 fc_starget_port_id(starget
) = -1;
352 static DECLARE_TRANSPORT_CLASS(fc_transport_class
,
358 static int fc_host_setup(struct transport_container
*tc
, struct device
*dev
,
361 struct Scsi_Host
*shost
= dev_to_shost(dev
);
362 struct fc_host_attrs
*fc_host
= shost_to_fc_host(shost
);
365 * Set default values easily detected by the midlayer as
366 * failure cases. The scsi lldd is responsible for initializing
367 * all transport attributes to valid values per host.
369 fc_host
->node_name
= -1;
370 fc_host
->port_name
= -1;
371 fc_host
->permanent_port_name
= -1;
372 fc_host
->supported_classes
= FC_COS_UNSPECIFIED
;
373 memset(fc_host
->supported_fc4s
, 0,
374 sizeof(fc_host
->supported_fc4s
));
375 fc_host
->supported_speeds
= FC_PORTSPEED_UNKNOWN
;
376 fc_host
->maxframe_size
= -1;
377 fc_host
->max_npiv_vports
= 0;
378 memset(fc_host
->serial_number
, 0,
379 sizeof(fc_host
->serial_number
));
381 fc_host
->port_id
= -1;
382 fc_host
->port_type
= FC_PORTTYPE_UNKNOWN
;
383 fc_host
->port_state
= FC_PORTSTATE_UNKNOWN
;
384 memset(fc_host
->active_fc4s
, 0,
385 sizeof(fc_host
->active_fc4s
));
386 fc_host
->speed
= FC_PORTSPEED_UNKNOWN
;
387 fc_host
->fabric_name
= -1;
388 memset(fc_host
->symbolic_name
, 0, sizeof(fc_host
->symbolic_name
));
389 memset(fc_host
->system_hostname
, 0, sizeof(fc_host
->system_hostname
));
391 fc_host
->tgtid_bind_type
= FC_TGTID_BIND_BY_WWPN
;
393 INIT_LIST_HEAD(&fc_host
->rports
);
394 INIT_LIST_HEAD(&fc_host
->rport_bindings
);
395 INIT_LIST_HEAD(&fc_host
->vports
);
396 fc_host
->next_rport_number
= 0;
397 fc_host
->next_target_id
= 0;
398 fc_host
->next_vport_number
= 0;
399 fc_host
->npiv_vports_inuse
= 0;
401 snprintf(fc_host
->work_q_name
, sizeof(fc_host
->work_q_name
),
402 "fc_wq_%d", shost
->host_no
);
403 fc_host
->work_q
= create_singlethread_workqueue(
404 fc_host
->work_q_name
);
405 if (!fc_host
->work_q
)
408 snprintf(fc_host
->devloss_work_q_name
,
409 sizeof(fc_host
->devloss_work_q_name
),
410 "fc_dl_%d", shost
->host_no
);
411 fc_host
->devloss_work_q
= create_singlethread_workqueue(
412 fc_host
->devloss_work_q_name
);
413 if (!fc_host
->devloss_work_q
) {
414 destroy_workqueue(fc_host
->work_q
);
415 fc_host
->work_q
= NULL
;
419 fc_bsg_hostadd(shost
, fc_host
);
420 /* ignore any bsg add error - we just can't do sgio */
425 static int fc_host_remove(struct transport_container
*tc
, struct device
*dev
,
428 struct Scsi_Host
*shost
= dev_to_shost(dev
);
429 struct fc_host_attrs
*fc_host
= shost_to_fc_host(shost
);
431 fc_bsg_remove(fc_host
->rqst_q
);
435 static DECLARE_TRANSPORT_CLASS(fc_host_class
,
442 * Setup and Remove actions for remote ports are handled
443 * in the service functions below.
445 static DECLARE_TRANSPORT_CLASS(fc_rport_class
,
452 * Setup and Remove actions for virtual ports are handled
453 * in the service functions below.
455 static DECLARE_TRANSPORT_CLASS(fc_vport_class
,
466 * dev_loss_tmo: the default number of seconds that the FC transport
467 * should insulate the loss of a remote port.
468 * The maximum will be capped by the value of SCSI_DEVICE_BLOCK_MAX_TIMEOUT.
470 static unsigned int fc_dev_loss_tmo
= 60; /* seconds */
472 module_param_named(dev_loss_tmo
, fc_dev_loss_tmo
, uint
, S_IRUGO
|S_IWUSR
);
473 MODULE_PARM_DESC(dev_loss_tmo
,
474 "Maximum number of seconds that the FC transport should"
475 " insulate the loss of a remote port. Once this value is"
476 " exceeded, the scsi target is removed. Value should be"
477 " between 1 and SCSI_DEVICE_BLOCK_MAX_TIMEOUT.");
480 * Netlink Infrastructure
483 static atomic_t fc_event_seq
;
486 * fc_get_event_number - Obtain the next sequential FC event number
489 * We could have inlined this, but it would have required fc_event_seq to
490 * be exposed. For now, live with the subroutine call.
491 * Atomic used to avoid lock/unlock...
494 fc_get_event_number(void)
496 return atomic_add_return(1, &fc_event_seq
);
498 EXPORT_SYMBOL(fc_get_event_number
);
502 * fc_host_post_event - called to post an even on an fc_host.
503 * @shost: host the event occurred on
504 * @event_number: fc event number obtained from get_fc_event_number()
505 * @event_code: fc_host event being posted
506 * @event_data: 32bits of data for the event being posted
509 * This routine assumes no locks are held on entry.
512 fc_host_post_event(struct Scsi_Host
*shost
, u32 event_number
,
513 enum fc_host_event_code event_code
, u32 event_data
)
516 struct nlmsghdr
*nlh
;
517 struct fc_nl_event
*event
;
527 len
= FC_NL_MSGALIGN(sizeof(*event
));
528 skblen
= NLMSG_SPACE(len
);
530 skb
= alloc_skb(skblen
, GFP_KERNEL
);
536 nlh
= nlmsg_put(skb
, 0, 0, SCSI_TRANSPORT_MSG
,
537 skblen
- sizeof(*nlh
), 0);
542 event
= NLMSG_DATA(nlh
);
544 INIT_SCSI_NL_HDR(&event
->snlh
, SCSI_NL_TRANSPORT_FC
,
545 FC_NL_ASYNC_EVENT
, len
);
546 event
->seconds
= get_seconds();
547 event
->vendor_id
= 0;
548 event
->host_no
= shost
->host_no
;
549 event
->event_datalen
= sizeof(u32
); /* bytes */
550 event
->event_num
= event_number
;
551 event
->event_code
= event_code
;
552 event
->event_data
= event_data
;
554 nlmsg_multicast(scsi_nl_sock
, skb
, 0, SCSI_NL_GRP_FC_EVENTS
,
561 name
= get_fc_host_event_code_name(event_code
);
563 "%s: Dropped Event : host %d %s data 0x%08x - err %d\n",
564 __func__
, shost
->host_no
,
565 (name
) ? name
: "<unknown>", event_data
, err
);
568 EXPORT_SYMBOL(fc_host_post_event
);
572 * fc_host_post_vendor_event - called to post a vendor unique event on an fc_host
573 * @shost: host the event occurred on
574 * @event_number: fc event number obtained from get_fc_event_number()
575 * @data_len: amount, in bytes, of vendor unique data
576 * @data_buf: pointer to vendor unique data
577 * @vendor_id: Vendor id
580 * This routine assumes no locks are held on entry.
583 fc_host_post_vendor_event(struct Scsi_Host
*shost
, u32 event_number
,
584 u32 data_len
, char * data_buf
, u64 vendor_id
)
587 struct nlmsghdr
*nlh
;
588 struct fc_nl_event
*event
;
594 goto send_vendor_fail
;
597 len
= FC_NL_MSGALIGN(sizeof(*event
) + data_len
);
598 skblen
= NLMSG_SPACE(len
);
600 skb
= alloc_skb(skblen
, GFP_KERNEL
);
603 goto send_vendor_fail
;
606 nlh
= nlmsg_put(skb
, 0, 0, SCSI_TRANSPORT_MSG
,
607 skblen
- sizeof(*nlh
), 0);
610 goto send_vendor_fail_skb
;
612 event
= NLMSG_DATA(nlh
);
614 INIT_SCSI_NL_HDR(&event
->snlh
, SCSI_NL_TRANSPORT_FC
,
615 FC_NL_ASYNC_EVENT
, len
);
616 event
->seconds
= get_seconds();
617 event
->vendor_id
= vendor_id
;
618 event
->host_no
= shost
->host_no
;
619 event
->event_datalen
= data_len
; /* bytes */
620 event
->event_num
= event_number
;
621 event
->event_code
= FCH_EVT_VENDOR_UNIQUE
;
622 memcpy(&event
->event_data
, data_buf
, data_len
);
624 nlmsg_multicast(scsi_nl_sock
, skb
, 0, SCSI_NL_GRP_FC_EVENTS
,
628 send_vendor_fail_skb
:
632 "%s: Dropped Event : host %d vendor_unique - err %d\n",
633 __func__
, shost
->host_no
, err
);
636 EXPORT_SYMBOL(fc_host_post_vendor_event
);
640 static __init
int fc_transport_init(void)
644 atomic_set(&fc_event_seq
, 0);
646 error
= transport_class_register(&fc_host_class
);
649 error
= transport_class_register(&fc_vport_class
);
652 error
= transport_class_register(&fc_rport_class
);
655 return transport_class_register(&fc_transport_class
);
658 static void __exit
fc_transport_exit(void)
660 transport_class_unregister(&fc_transport_class
);
661 transport_class_unregister(&fc_rport_class
);
662 transport_class_unregister(&fc_host_class
);
663 transport_class_unregister(&fc_vport_class
);
667 * FC Remote Port Attribute Management
670 #define fc_rport_show_function(field, format_string, sz, cast) \
672 show_fc_rport_##field (struct device *dev, \
673 struct device_attribute *attr, char *buf) \
675 struct fc_rport *rport = transport_class_to_rport(dev); \
676 struct Scsi_Host *shost = rport_to_shost(rport); \
677 struct fc_internal *i = to_fc_internal(shost->transportt); \
678 if ((i->f->get_rport_##field) && \
679 !((rport->port_state == FC_PORTSTATE_BLOCKED) || \
680 (rport->port_state == FC_PORTSTATE_DELETED) || \
681 (rport->port_state == FC_PORTSTATE_NOTPRESENT))) \
682 i->f->get_rport_##field(rport); \
683 return snprintf(buf, sz, format_string, cast rport->field); \
686 #define fc_rport_store_function(field) \
688 store_fc_rport_##field(struct device *dev, \
689 struct device_attribute *attr, \
690 const char *buf, size_t count) \
693 struct fc_rport *rport = transport_class_to_rport(dev); \
694 struct Scsi_Host *shost = rport_to_shost(rport); \
695 struct fc_internal *i = to_fc_internal(shost->transportt); \
697 if ((rport->port_state == FC_PORTSTATE_BLOCKED) || \
698 (rport->port_state == FC_PORTSTATE_DELETED) || \
699 (rport->port_state == FC_PORTSTATE_NOTPRESENT)) \
701 val = simple_strtoul(buf, &cp, 0); \
702 if (*cp && (*cp != '\n')) \
704 i->f->set_rport_##field(rport, val); \
708 #define fc_rport_rd_attr(field, format_string, sz) \
709 fc_rport_show_function(field, format_string, sz, ) \
710 static FC_DEVICE_ATTR(rport, field, S_IRUGO, \
711 show_fc_rport_##field, NULL)
713 #define fc_rport_rd_attr_cast(field, format_string, sz, cast) \
714 fc_rport_show_function(field, format_string, sz, (cast)) \
715 static FC_DEVICE_ATTR(rport, field, S_IRUGO, \
716 show_fc_rport_##field, NULL)
718 #define fc_rport_rw_attr(field, format_string, sz) \
719 fc_rport_show_function(field, format_string, sz, ) \
720 fc_rport_store_function(field) \
721 static FC_DEVICE_ATTR(rport, field, S_IRUGO | S_IWUSR, \
722 show_fc_rport_##field, \
723 store_fc_rport_##field)
726 #define fc_private_rport_show_function(field, format_string, sz, cast) \
728 show_fc_rport_##field (struct device *dev, \
729 struct device_attribute *attr, char *buf) \
731 struct fc_rport *rport = transport_class_to_rport(dev); \
732 return snprintf(buf, sz, format_string, cast rport->field); \
735 #define fc_private_rport_rd_attr(field, format_string, sz) \
736 fc_private_rport_show_function(field, format_string, sz, ) \
737 static FC_DEVICE_ATTR(rport, field, S_IRUGO, \
738 show_fc_rport_##field, NULL)
740 #define fc_private_rport_rd_attr_cast(field, format_string, sz, cast) \
741 fc_private_rport_show_function(field, format_string, sz, (cast)) \
742 static FC_DEVICE_ATTR(rport, field, S_IRUGO, \
743 show_fc_rport_##field, NULL)
746 #define fc_private_rport_rd_enum_attr(title, maxlen) \
748 show_fc_rport_##title (struct device *dev, \
749 struct device_attribute *attr, char *buf) \
751 struct fc_rport *rport = transport_class_to_rport(dev); \
753 name = get_fc_##title##_name(rport->title); \
756 return snprintf(buf, maxlen, "%s\n", name); \
758 static FC_DEVICE_ATTR(rport, title, S_IRUGO, \
759 show_fc_rport_##title, NULL)
762 #define SETUP_RPORT_ATTRIBUTE_RD(field) \
763 i->private_rport_attrs[count] = device_attr_rport_##field; \
764 i->private_rport_attrs[count].attr.mode = S_IRUGO; \
765 i->private_rport_attrs[count].store = NULL; \
766 i->rport_attrs[count] = &i->private_rport_attrs[count]; \
767 if (i->f->show_rport_##field) \
770 #define SETUP_PRIVATE_RPORT_ATTRIBUTE_RD(field) \
771 i->private_rport_attrs[count] = device_attr_rport_##field; \
772 i->private_rport_attrs[count].attr.mode = S_IRUGO; \
773 i->private_rport_attrs[count].store = NULL; \
774 i->rport_attrs[count] = &i->private_rport_attrs[count]; \
777 #define SETUP_RPORT_ATTRIBUTE_RW(field) \
778 i->private_rport_attrs[count] = device_attr_rport_##field; \
779 if (!i->f->set_rport_##field) { \
780 i->private_rport_attrs[count].attr.mode = S_IRUGO; \
781 i->private_rport_attrs[count].store = NULL; \
783 i->rport_attrs[count] = &i->private_rport_attrs[count]; \
784 if (i->f->show_rport_##field) \
787 #define SETUP_PRIVATE_RPORT_ATTRIBUTE_RW(field) \
789 i->private_rport_attrs[count] = device_attr_rport_##field; \
790 i->rport_attrs[count] = &i->private_rport_attrs[count]; \
795 /* The FC Transport Remote Port Attributes: */
797 /* Fixed Remote Port Attributes */
799 fc_private_rport_rd_attr(maxframe_size
, "%u bytes\n", 20);
802 show_fc_rport_supported_classes (struct device
*dev
,
803 struct device_attribute
*attr
, char *buf
)
805 struct fc_rport
*rport
= transport_class_to_rport(dev
);
806 if (rport
->supported_classes
== FC_COS_UNSPECIFIED
)
807 return snprintf(buf
, 20, "unspecified\n");
808 return get_fc_cos_names(rport
->supported_classes
, buf
);
810 static FC_DEVICE_ATTR(rport
, supported_classes
, S_IRUGO
,
811 show_fc_rport_supported_classes
, NULL
);
813 /* Dynamic Remote Port Attributes */
816 * dev_loss_tmo attribute
818 fc_rport_show_function(dev_loss_tmo
, "%d\n", 20, )
820 store_fc_rport_dev_loss_tmo(struct device
*dev
, struct device_attribute
*attr
,
821 const char *buf
, size_t count
)
824 struct fc_rport
*rport
= transport_class_to_rport(dev
);
825 struct Scsi_Host
*shost
= rport_to_shost(rport
);
826 struct fc_internal
*i
= to_fc_internal(shost
->transportt
);
828 if ((rport
->port_state
== FC_PORTSTATE_BLOCKED
) ||
829 (rport
->port_state
== FC_PORTSTATE_DELETED
) ||
830 (rport
->port_state
== FC_PORTSTATE_NOTPRESENT
))
832 val
= simple_strtoul(buf
, &cp
, 0);
833 if ((*cp
&& (*cp
!= '\n')) ||
834 (val
< 0) || (val
> SCSI_DEVICE_BLOCK_MAX_TIMEOUT
))
836 i
->f
->set_rport_dev_loss_tmo(rport
, val
);
839 static FC_DEVICE_ATTR(rport
, dev_loss_tmo
, S_IRUGO
| S_IWUSR
,
840 show_fc_rport_dev_loss_tmo
, store_fc_rport_dev_loss_tmo
);
843 /* Private Remote Port Attributes */
845 fc_private_rport_rd_attr_cast(node_name
, "0x%llx\n", 20, unsigned long long);
846 fc_private_rport_rd_attr_cast(port_name
, "0x%llx\n", 20, unsigned long long);
847 fc_private_rport_rd_attr(port_id
, "0x%06x\n", 20);
850 show_fc_rport_roles (struct device
*dev
, struct device_attribute
*attr
,
853 struct fc_rport
*rport
= transport_class_to_rport(dev
);
855 /* identify any roles that are port_id specific */
856 if ((rport
->port_id
!= -1) &&
857 (rport
->port_id
& FC_WELLKNOWN_PORTID_MASK
) ==
858 FC_WELLKNOWN_PORTID_MASK
) {
859 switch (rport
->port_id
& FC_WELLKNOWN_ROLE_MASK
) {
860 case FC_FPORT_PORTID
:
861 return snprintf(buf
, 30, "Fabric Port\n");
862 case FC_FABCTLR_PORTID
:
863 return snprintf(buf
, 30, "Fabric Controller\n");
864 case FC_DIRSRVR_PORTID
:
865 return snprintf(buf
, 30, "Directory Server\n");
866 case FC_TIMESRVR_PORTID
:
867 return snprintf(buf
, 30, "Time Server\n");
868 case FC_MGMTSRVR_PORTID
:
869 return snprintf(buf
, 30, "Management Server\n");
871 return snprintf(buf
, 30, "Unknown Fabric Entity\n");
874 if (rport
->roles
== FC_PORT_ROLE_UNKNOWN
)
875 return snprintf(buf
, 20, "unknown\n");
876 return get_fc_port_roles_names(rport
->roles
, buf
);
879 static FC_DEVICE_ATTR(rport
, roles
, S_IRUGO
,
880 show_fc_rport_roles
, NULL
);
882 fc_private_rport_rd_enum_attr(port_state
, FC_PORTSTATE_MAX_NAMELEN
);
883 fc_private_rport_rd_attr(scsi_target_id
, "%d\n", 20);
886 * fast_io_fail_tmo attribute
889 show_fc_rport_fast_io_fail_tmo (struct device
*dev
,
890 struct device_attribute
*attr
, char *buf
)
892 struct fc_rport
*rport
= transport_class_to_rport(dev
);
894 if (rport
->fast_io_fail_tmo
== -1)
895 return snprintf(buf
, 5, "off\n");
896 return snprintf(buf
, 20, "%d\n", rport
->fast_io_fail_tmo
);
900 store_fc_rport_fast_io_fail_tmo(struct device
*dev
,
901 struct device_attribute
*attr
, const char *buf
,
906 struct fc_rport
*rport
= transport_class_to_rport(dev
);
908 if ((rport
->port_state
== FC_PORTSTATE_BLOCKED
) ||
909 (rport
->port_state
== FC_PORTSTATE_DELETED
) ||
910 (rport
->port_state
== FC_PORTSTATE_NOTPRESENT
))
912 if (strncmp(buf
, "off", 3) == 0)
913 rport
->fast_io_fail_tmo
= -1;
915 val
= simple_strtoul(buf
, &cp
, 0);
916 if ((*cp
&& (*cp
!= '\n')) ||
917 (val
< 0) || (val
>= rport
->dev_loss_tmo
))
919 rport
->fast_io_fail_tmo
= val
;
923 static FC_DEVICE_ATTR(rport
, fast_io_fail_tmo
, S_IRUGO
| S_IWUSR
,
924 show_fc_rport_fast_io_fail_tmo
, store_fc_rport_fast_io_fail_tmo
);
928 * FC SCSI Target Attribute Management
932 * Note: in the target show function we recognize when the remote
933 * port is in the heirarchy and do not allow the driver to get
934 * involved in sysfs functions. The driver only gets involved if
935 * it's the "old" style that doesn't use rports.
937 #define fc_starget_show_function(field, format_string, sz, cast) \
939 show_fc_starget_##field (struct device *dev, \
940 struct device_attribute *attr, char *buf) \
942 struct scsi_target *starget = transport_class_to_starget(dev); \
943 struct Scsi_Host *shost = dev_to_shost(starget->dev.parent); \
944 struct fc_internal *i = to_fc_internal(shost->transportt); \
945 struct fc_rport *rport = starget_to_rport(starget); \
947 fc_starget_##field(starget) = rport->field; \
948 else if (i->f->get_starget_##field) \
949 i->f->get_starget_##field(starget); \
950 return snprintf(buf, sz, format_string, \
951 cast fc_starget_##field(starget)); \
954 #define fc_starget_rd_attr(field, format_string, sz) \
955 fc_starget_show_function(field, format_string, sz, ) \
956 static FC_DEVICE_ATTR(starget, field, S_IRUGO, \
957 show_fc_starget_##field, NULL)
959 #define fc_starget_rd_attr_cast(field, format_string, sz, cast) \
960 fc_starget_show_function(field, format_string, sz, (cast)) \
961 static FC_DEVICE_ATTR(starget, field, S_IRUGO, \
962 show_fc_starget_##field, NULL)
964 #define SETUP_STARGET_ATTRIBUTE_RD(field) \
965 i->private_starget_attrs[count] = device_attr_starget_##field; \
966 i->private_starget_attrs[count].attr.mode = S_IRUGO; \
967 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 #define SETUP_STARGET_ATTRIBUTE_RW(field) \
973 i->private_starget_attrs[count] = device_attr_starget_##field; \
974 if (!i->f->set_starget_##field) { \
975 i->private_starget_attrs[count].attr.mode = S_IRUGO; \
976 i->private_starget_attrs[count].store = NULL; \
978 i->starget_attrs[count] = &i->private_starget_attrs[count]; \
979 if (i->f->show_starget_##field) \
982 /* The FC Transport SCSI Target Attributes: */
983 fc_starget_rd_attr_cast(node_name
, "0x%llx\n", 20, unsigned long long);
984 fc_starget_rd_attr_cast(port_name
, "0x%llx\n", 20, unsigned long long);
985 fc_starget_rd_attr(port_id
, "0x%06x\n", 20);
989 * FC Virtual Port Attribute Management
992 #define fc_vport_show_function(field, format_string, sz, cast) \
994 show_fc_vport_##field (struct device *dev, \
995 struct device_attribute *attr, char *buf) \
997 struct fc_vport *vport = transport_class_to_vport(dev); \
998 struct Scsi_Host *shost = vport_to_shost(vport); \
999 struct fc_internal *i = to_fc_internal(shost->transportt); \
1000 if ((i->f->get_vport_##field) && \
1001 !(vport->flags & (FC_VPORT_DEL | FC_VPORT_CREATING))) \
1002 i->f->get_vport_##field(vport); \
1003 return snprintf(buf, sz, format_string, cast vport->field); \
1006 #define fc_vport_store_function(field) \
1008 store_fc_vport_##field(struct device *dev, \
1009 struct device_attribute *attr, \
1010 const char *buf, size_t count) \
1013 struct fc_vport *vport = transport_class_to_vport(dev); \
1014 struct Scsi_Host *shost = vport_to_shost(vport); \
1015 struct fc_internal *i = to_fc_internal(shost->transportt); \
1017 if (vport->flags & (FC_VPORT_DEL | FC_VPORT_CREATING)) \
1019 val = simple_strtoul(buf, &cp, 0); \
1020 if (*cp && (*cp != '\n')) \
1022 i->f->set_vport_##field(vport, val); \
1026 #define fc_vport_store_str_function(field, slen) \
1028 store_fc_vport_##field(struct device *dev, \
1029 struct device_attribute *attr, \
1030 const char *buf, size_t count) \
1032 struct fc_vport *vport = transport_class_to_vport(dev); \
1033 struct Scsi_Host *shost = vport_to_shost(vport); \
1034 struct fc_internal *i = to_fc_internal(shost->transportt); \
1035 unsigned int cnt=count; \
1037 /* count may include a LF at end of string */ \
1038 if (buf[cnt-1] == '\n') \
1040 if (cnt > ((slen) - 1)) \
1042 memcpy(vport->field, buf, cnt); \
1043 i->f->set_vport_##field(vport); \
1047 #define fc_vport_rd_attr(field, format_string, sz) \
1048 fc_vport_show_function(field, format_string, sz, ) \
1049 static FC_DEVICE_ATTR(vport, field, S_IRUGO, \
1050 show_fc_vport_##field, NULL)
1052 #define fc_vport_rd_attr_cast(field, format_string, sz, cast) \
1053 fc_vport_show_function(field, format_string, sz, (cast)) \
1054 static FC_DEVICE_ATTR(vport, field, S_IRUGO, \
1055 show_fc_vport_##field, NULL)
1057 #define fc_vport_rw_attr(field, format_string, sz) \
1058 fc_vport_show_function(field, format_string, sz, ) \
1059 fc_vport_store_function(field) \
1060 static FC_DEVICE_ATTR(vport, field, S_IRUGO | S_IWUSR, \
1061 show_fc_vport_##field, \
1062 store_fc_vport_##field)
1064 #define fc_private_vport_show_function(field, format_string, sz, cast) \
1066 show_fc_vport_##field (struct device *dev, \
1067 struct device_attribute *attr, char *buf) \
1069 struct fc_vport *vport = transport_class_to_vport(dev); \
1070 return snprintf(buf, sz, format_string, cast vport->field); \
1073 #define fc_private_vport_store_u32_function(field) \
1075 store_fc_vport_##field(struct device *dev, \
1076 struct device_attribute *attr, \
1077 const char *buf, size_t count) \
1080 struct fc_vport *vport = transport_class_to_vport(dev); \
1082 if (vport->flags & (FC_VPORT_DEL | FC_VPORT_CREATING)) \
1084 val = simple_strtoul(buf, &cp, 0); \
1085 if (*cp && (*cp != '\n')) \
1087 vport->field = val; \
1092 #define fc_private_vport_rd_attr(field, format_string, sz) \
1093 fc_private_vport_show_function(field, format_string, sz, ) \
1094 static FC_DEVICE_ATTR(vport, field, S_IRUGO, \
1095 show_fc_vport_##field, NULL)
1097 #define fc_private_vport_rd_attr_cast(field, format_string, sz, cast) \
1098 fc_private_vport_show_function(field, format_string, sz, (cast)) \
1099 static FC_DEVICE_ATTR(vport, field, S_IRUGO, \
1100 show_fc_vport_##field, NULL)
1102 #define fc_private_vport_rw_u32_attr(field, format_string, sz) \
1103 fc_private_vport_show_function(field, format_string, sz, ) \
1104 fc_private_vport_store_u32_function(field) \
1105 static FC_DEVICE_ATTR(vport, field, S_IRUGO | S_IWUSR, \
1106 show_fc_vport_##field, \
1107 store_fc_vport_##field)
1110 #define fc_private_vport_rd_enum_attr(title, maxlen) \
1112 show_fc_vport_##title (struct device *dev, \
1113 struct device_attribute *attr, \
1116 struct fc_vport *vport = transport_class_to_vport(dev); \
1118 name = get_fc_##title##_name(vport->title); \
1121 return snprintf(buf, maxlen, "%s\n", name); \
1123 static FC_DEVICE_ATTR(vport, title, S_IRUGO, \
1124 show_fc_vport_##title, NULL)
1127 #define SETUP_VPORT_ATTRIBUTE_RD(field) \
1128 i->private_vport_attrs[count] = device_attr_vport_##field; \
1129 i->private_vport_attrs[count].attr.mode = S_IRUGO; \
1130 i->private_vport_attrs[count].store = NULL; \
1131 i->vport_attrs[count] = &i->private_vport_attrs[count]; \
1132 if (i->f->get_##field) \
1134 /* NOTE: Above MACRO differs: checks function not show bit */
1136 #define SETUP_PRIVATE_VPORT_ATTRIBUTE_RD(field) \
1137 i->private_vport_attrs[count] = device_attr_vport_##field; \
1138 i->private_vport_attrs[count].attr.mode = S_IRUGO; \
1139 i->private_vport_attrs[count].store = NULL; \
1140 i->vport_attrs[count] = &i->private_vport_attrs[count]; \
1143 #define SETUP_VPORT_ATTRIBUTE_WR(field) \
1144 i->private_vport_attrs[count] = device_attr_vport_##field; \
1145 i->vport_attrs[count] = &i->private_vport_attrs[count]; \
1148 /* NOTE: Above MACRO differs: checks function */
1150 #define SETUP_VPORT_ATTRIBUTE_RW(field) \
1151 i->private_vport_attrs[count] = device_attr_vport_##field; \
1152 if (!i->f->set_vport_##field) { \
1153 i->private_vport_attrs[count].attr.mode = S_IRUGO; \
1154 i->private_vport_attrs[count].store = NULL; \
1156 i->vport_attrs[count] = &i->private_vport_attrs[count]; \
1158 /* NOTE: Above MACRO differs: does not check show bit */
1160 #define SETUP_PRIVATE_VPORT_ATTRIBUTE_RW(field) \
1162 i->private_vport_attrs[count] = device_attr_vport_##field; \
1163 i->vport_attrs[count] = &i->private_vport_attrs[count]; \
1168 /* The FC Transport Virtual Port Attributes: */
1170 /* Fixed Virtual Port Attributes */
1172 /* Dynamic Virtual Port Attributes */
1174 /* Private Virtual Port Attributes */
1176 fc_private_vport_rd_enum_attr(vport_state
, FC_VPORTSTATE_MAX_NAMELEN
);
1177 fc_private_vport_rd_enum_attr(vport_last_state
, FC_VPORTSTATE_MAX_NAMELEN
);
1178 fc_private_vport_rd_attr_cast(node_name
, "0x%llx\n", 20, unsigned long long);
1179 fc_private_vport_rd_attr_cast(port_name
, "0x%llx\n", 20, unsigned long long);
1182 show_fc_vport_roles (struct device
*dev
, struct device_attribute
*attr
,
1185 struct fc_vport
*vport
= transport_class_to_vport(dev
);
1187 if (vport
->roles
== FC_PORT_ROLE_UNKNOWN
)
1188 return snprintf(buf
, 20, "unknown\n");
1189 return get_fc_port_roles_names(vport
->roles
, buf
);
1191 static FC_DEVICE_ATTR(vport
, roles
, S_IRUGO
, show_fc_vport_roles
, NULL
);
1193 fc_private_vport_rd_enum_attr(vport_type
, FC_PORTTYPE_MAX_NAMELEN
);
1195 fc_private_vport_show_function(symbolic_name
, "%s\n",
1196 FC_VPORT_SYMBOLIC_NAMELEN
+ 1, )
1197 fc_vport_store_str_function(symbolic_name
, FC_VPORT_SYMBOLIC_NAMELEN
)
1198 static FC_DEVICE_ATTR(vport
, symbolic_name
, S_IRUGO
| S_IWUSR
,
1199 show_fc_vport_symbolic_name
, store_fc_vport_symbolic_name
);
1202 store_fc_vport_delete(struct device
*dev
, struct device_attribute
*attr
,
1203 const char *buf
, size_t count
)
1205 struct fc_vport
*vport
= transport_class_to_vport(dev
);
1206 struct Scsi_Host
*shost
= vport_to_shost(vport
);
1208 fc_queue_work(shost
, &vport
->vport_delete_work
);
1211 static FC_DEVICE_ATTR(vport
, vport_delete
, S_IWUSR
,
1212 NULL
, store_fc_vport_delete
);
1216 * Enable/Disable vport
1217 * Write "1" to disable, write "0" to enable
1220 store_fc_vport_disable(struct device
*dev
, struct device_attribute
*attr
,
1224 struct fc_vport
*vport
= transport_class_to_vport(dev
);
1225 struct Scsi_Host
*shost
= vport_to_shost(vport
);
1226 struct fc_internal
*i
= to_fc_internal(shost
->transportt
);
1229 if (vport
->flags
& (FC_VPORT_DEL
| FC_VPORT_CREATING
))
1233 if (vport
->vport_state
!= FC_VPORT_DISABLED
)
1235 } else if (*buf
== '1') {
1236 if (vport
->vport_state
== FC_VPORT_DISABLED
)
1241 stat
= i
->f
->vport_disable(vport
, ((*buf
== '0') ? false : true));
1242 return stat
? stat
: count
;
1244 static FC_DEVICE_ATTR(vport
, vport_disable
, S_IWUSR
,
1245 NULL
, store_fc_vport_disable
);
1249 * Host Attribute Management
1252 #define fc_host_show_function(field, format_string, sz, cast) \
1254 show_fc_host_##field (struct device *dev, \
1255 struct device_attribute *attr, char *buf) \
1257 struct Scsi_Host *shost = transport_class_to_shost(dev); \
1258 struct fc_internal *i = to_fc_internal(shost->transportt); \
1259 if (i->f->get_host_##field) \
1260 i->f->get_host_##field(shost); \
1261 return snprintf(buf, sz, format_string, cast fc_host_##field(shost)); \
1264 #define fc_host_store_function(field) \
1266 store_fc_host_##field(struct device *dev, \
1267 struct device_attribute *attr, \
1268 const char *buf, size_t count) \
1271 struct Scsi_Host *shost = transport_class_to_shost(dev); \
1272 struct fc_internal *i = to_fc_internal(shost->transportt); \
1275 val = simple_strtoul(buf, &cp, 0); \
1276 if (*cp && (*cp != '\n')) \
1278 i->f->set_host_##field(shost, val); \
1282 #define fc_host_store_str_function(field, slen) \
1284 store_fc_host_##field(struct device *dev, \
1285 struct device_attribute *attr, \
1286 const char *buf, size_t count) \
1288 struct Scsi_Host *shost = transport_class_to_shost(dev); \
1289 struct fc_internal *i = to_fc_internal(shost->transportt); \
1290 unsigned int cnt=count; \
1292 /* count may include a LF at end of string */ \
1293 if (buf[cnt-1] == '\n') \
1295 if (cnt > ((slen) - 1)) \
1297 memcpy(fc_host_##field(shost), buf, cnt); \
1298 i->f->set_host_##field(shost); \
1302 #define fc_host_rd_attr(field, format_string, sz) \
1303 fc_host_show_function(field, format_string, sz, ) \
1304 static FC_DEVICE_ATTR(host, field, S_IRUGO, \
1305 show_fc_host_##field, NULL)
1307 #define fc_host_rd_attr_cast(field, format_string, sz, cast) \
1308 fc_host_show_function(field, format_string, sz, (cast)) \
1309 static FC_DEVICE_ATTR(host, field, S_IRUGO, \
1310 show_fc_host_##field, NULL)
1312 #define fc_host_rw_attr(field, format_string, sz) \
1313 fc_host_show_function(field, format_string, sz, ) \
1314 fc_host_store_function(field) \
1315 static FC_DEVICE_ATTR(host, field, S_IRUGO | S_IWUSR, \
1316 show_fc_host_##field, \
1317 store_fc_host_##field)
1319 #define fc_host_rd_enum_attr(title, maxlen) \
1321 show_fc_host_##title (struct device *dev, \
1322 struct device_attribute *attr, char *buf) \
1324 struct Scsi_Host *shost = transport_class_to_shost(dev); \
1325 struct fc_internal *i = to_fc_internal(shost->transportt); \
1327 if (i->f->get_host_##title) \
1328 i->f->get_host_##title(shost); \
1329 name = get_fc_##title##_name(fc_host_##title(shost)); \
1332 return snprintf(buf, maxlen, "%s\n", name); \
1334 static FC_DEVICE_ATTR(host, title, S_IRUGO, show_fc_host_##title, NULL)
1336 #define SETUP_HOST_ATTRIBUTE_RD(field) \
1337 i->private_host_attrs[count] = device_attr_host_##field; \
1338 i->private_host_attrs[count].attr.mode = S_IRUGO; \
1339 i->private_host_attrs[count].store = NULL; \
1340 i->host_attrs[count] = &i->private_host_attrs[count]; \
1341 if (i->f->show_host_##field) \
1344 #define SETUP_HOST_ATTRIBUTE_RD_NS(field) \
1345 i->private_host_attrs[count] = device_attr_host_##field; \
1346 i->private_host_attrs[count].attr.mode = S_IRUGO; \
1347 i->private_host_attrs[count].store = NULL; \
1348 i->host_attrs[count] = &i->private_host_attrs[count]; \
1351 #define SETUP_HOST_ATTRIBUTE_RW(field) \
1352 i->private_host_attrs[count] = device_attr_host_##field; \
1353 if (!i->f->set_host_##field) { \
1354 i->private_host_attrs[count].attr.mode = S_IRUGO; \
1355 i->private_host_attrs[count].store = NULL; \
1357 i->host_attrs[count] = &i->private_host_attrs[count]; \
1358 if (i->f->show_host_##field) \
1362 #define fc_private_host_show_function(field, format_string, sz, cast) \
1364 show_fc_host_##field (struct device *dev, \
1365 struct device_attribute *attr, char *buf) \
1367 struct Scsi_Host *shost = transport_class_to_shost(dev); \
1368 return snprintf(buf, sz, format_string, cast fc_host_##field(shost)); \
1371 #define fc_private_host_rd_attr(field, format_string, sz) \
1372 fc_private_host_show_function(field, format_string, sz, ) \
1373 static FC_DEVICE_ATTR(host, field, S_IRUGO, \
1374 show_fc_host_##field, NULL)
1376 #define fc_private_host_rd_attr_cast(field, format_string, sz, cast) \
1377 fc_private_host_show_function(field, format_string, sz, (cast)) \
1378 static FC_DEVICE_ATTR(host, field, S_IRUGO, \
1379 show_fc_host_##field, NULL)
1381 #define SETUP_PRIVATE_HOST_ATTRIBUTE_RD(field) \
1382 i->private_host_attrs[count] = device_attr_host_##field; \
1383 i->private_host_attrs[count].attr.mode = S_IRUGO; \
1384 i->private_host_attrs[count].store = NULL; \
1385 i->host_attrs[count] = &i->private_host_attrs[count]; \
1388 #define SETUP_PRIVATE_HOST_ATTRIBUTE_RW(field) \
1390 i->private_host_attrs[count] = device_attr_host_##field; \
1391 i->host_attrs[count] = &i->private_host_attrs[count]; \
1396 /* Fixed Host Attributes */
1399 show_fc_host_supported_classes (struct device
*dev
,
1400 struct device_attribute
*attr
, char *buf
)
1402 struct Scsi_Host
*shost
= transport_class_to_shost(dev
);
1404 if (fc_host_supported_classes(shost
) == FC_COS_UNSPECIFIED
)
1405 return snprintf(buf
, 20, "unspecified\n");
1407 return get_fc_cos_names(fc_host_supported_classes(shost
), buf
);
1409 static FC_DEVICE_ATTR(host
, supported_classes
, S_IRUGO
,
1410 show_fc_host_supported_classes
, NULL
);
1413 show_fc_host_supported_fc4s (struct device
*dev
,
1414 struct device_attribute
*attr
, char *buf
)
1416 struct Scsi_Host
*shost
= transport_class_to_shost(dev
);
1417 return (ssize_t
)show_fc_fc4s(buf
, fc_host_supported_fc4s(shost
));
1419 static FC_DEVICE_ATTR(host
, supported_fc4s
, S_IRUGO
,
1420 show_fc_host_supported_fc4s
, NULL
);
1423 show_fc_host_supported_speeds (struct device
*dev
,
1424 struct device_attribute
*attr
, char *buf
)
1426 struct Scsi_Host
*shost
= transport_class_to_shost(dev
);
1428 if (fc_host_supported_speeds(shost
) == FC_PORTSPEED_UNKNOWN
)
1429 return snprintf(buf
, 20, "unknown\n");
1431 return get_fc_port_speed_names(fc_host_supported_speeds(shost
), buf
);
1433 static FC_DEVICE_ATTR(host
, supported_speeds
, S_IRUGO
,
1434 show_fc_host_supported_speeds
, NULL
);
1437 fc_private_host_rd_attr_cast(node_name
, "0x%llx\n", 20, unsigned long long);
1438 fc_private_host_rd_attr_cast(port_name
, "0x%llx\n", 20, unsigned long long);
1439 fc_private_host_rd_attr_cast(permanent_port_name
, "0x%llx\n", 20,
1440 unsigned long long);
1441 fc_private_host_rd_attr(maxframe_size
, "%u bytes\n", 20);
1442 fc_private_host_rd_attr(max_npiv_vports
, "%u\n", 20);
1443 fc_private_host_rd_attr(serial_number
, "%s\n", (FC_SERIAL_NUMBER_SIZE
+1));
1446 /* Dynamic Host Attributes */
1449 show_fc_host_active_fc4s (struct device
*dev
,
1450 struct device_attribute
*attr
, char *buf
)
1452 struct Scsi_Host
*shost
= transport_class_to_shost(dev
);
1453 struct fc_internal
*i
= to_fc_internal(shost
->transportt
);
1455 if (i
->f
->get_host_active_fc4s
)
1456 i
->f
->get_host_active_fc4s(shost
);
1458 return (ssize_t
)show_fc_fc4s(buf
, fc_host_active_fc4s(shost
));
1460 static FC_DEVICE_ATTR(host
, active_fc4s
, S_IRUGO
,
1461 show_fc_host_active_fc4s
, NULL
);
1464 show_fc_host_speed (struct device
*dev
,
1465 struct device_attribute
*attr
, char *buf
)
1467 struct Scsi_Host
*shost
= transport_class_to_shost(dev
);
1468 struct fc_internal
*i
= to_fc_internal(shost
->transportt
);
1470 if (i
->f
->get_host_speed
)
1471 i
->f
->get_host_speed(shost
);
1473 if (fc_host_speed(shost
) == FC_PORTSPEED_UNKNOWN
)
1474 return snprintf(buf
, 20, "unknown\n");
1476 return get_fc_port_speed_names(fc_host_speed(shost
), buf
);
1478 static FC_DEVICE_ATTR(host
, speed
, S_IRUGO
,
1479 show_fc_host_speed
, NULL
);
1482 fc_host_rd_attr(port_id
, "0x%06x\n", 20);
1483 fc_host_rd_enum_attr(port_type
, FC_PORTTYPE_MAX_NAMELEN
);
1484 fc_host_rd_enum_attr(port_state
, FC_PORTSTATE_MAX_NAMELEN
);
1485 fc_host_rd_attr_cast(fabric_name
, "0x%llx\n", 20, unsigned long long);
1486 fc_host_rd_attr(symbolic_name
, "%s\n", FC_SYMBOLIC_NAME_SIZE
+ 1);
1488 fc_private_host_show_function(system_hostname
, "%s\n",
1489 FC_SYMBOLIC_NAME_SIZE
+ 1, )
1490 fc_host_store_str_function(system_hostname
, FC_SYMBOLIC_NAME_SIZE
)
1491 static FC_DEVICE_ATTR(host
, system_hostname
, S_IRUGO
| S_IWUSR
,
1492 show_fc_host_system_hostname
, store_fc_host_system_hostname
);
1495 /* Private Host Attributes */
1498 show_fc_private_host_tgtid_bind_type(struct device
*dev
,
1499 struct device_attribute
*attr
, char *buf
)
1501 struct Scsi_Host
*shost
= transport_class_to_shost(dev
);
1504 name
= get_fc_tgtid_bind_type_name(fc_host_tgtid_bind_type(shost
));
1507 return snprintf(buf
, FC_BINDTYPE_MAX_NAMELEN
, "%s\n", name
);
1510 #define get_list_head_entry(pos, head, member) \
1511 pos = list_entry((head)->next, typeof(*pos), member)
1514 store_fc_private_host_tgtid_bind_type(struct device
*dev
,
1515 struct device_attribute
*attr
, const char *buf
, size_t count
)
1517 struct Scsi_Host
*shost
= transport_class_to_shost(dev
);
1518 struct fc_rport
*rport
;
1519 enum fc_tgtid_binding_type val
;
1520 unsigned long flags
;
1522 if (get_fc_tgtid_bind_type_match(buf
, &val
))
1525 /* if changing bind type, purge all unused consistent bindings */
1526 if (val
!= fc_host_tgtid_bind_type(shost
)) {
1527 spin_lock_irqsave(shost
->host_lock
, flags
);
1528 while (!list_empty(&fc_host_rport_bindings(shost
))) {
1529 get_list_head_entry(rport
,
1530 &fc_host_rport_bindings(shost
), peers
);
1531 list_del(&rport
->peers
);
1532 rport
->port_state
= FC_PORTSTATE_DELETED
;
1533 fc_queue_work(shost
, &rport
->rport_delete_work
);
1535 spin_unlock_irqrestore(shost
->host_lock
, flags
);
1538 fc_host_tgtid_bind_type(shost
) = val
;
1542 static FC_DEVICE_ATTR(host
, tgtid_bind_type
, S_IRUGO
| S_IWUSR
,
1543 show_fc_private_host_tgtid_bind_type
,
1544 store_fc_private_host_tgtid_bind_type
);
1547 store_fc_private_host_issue_lip(struct device
*dev
,
1548 struct device_attribute
*attr
, const char *buf
, size_t count
)
1550 struct Scsi_Host
*shost
= transport_class_to_shost(dev
);
1551 struct fc_internal
*i
= to_fc_internal(shost
->transportt
);
1554 /* ignore any data value written to the attribute */
1555 if (i
->f
->issue_fc_host_lip
) {
1556 ret
= i
->f
->issue_fc_host_lip(shost
);
1557 return ret
? ret
: count
;
1563 static FC_DEVICE_ATTR(host
, issue_lip
, S_IWUSR
, NULL
,
1564 store_fc_private_host_issue_lip
);
1566 fc_private_host_rd_attr(npiv_vports_inuse
, "%u\n", 20);
1570 * Host Statistics Management
1573 /* Show a given an attribute in the statistics group */
1575 fc_stat_show(const struct device
*dev
, char *buf
, unsigned long offset
)
1577 struct Scsi_Host
*shost
= transport_class_to_shost(dev
);
1578 struct fc_internal
*i
= to_fc_internal(shost
->transportt
);
1579 struct fc_host_statistics
*stats
;
1580 ssize_t ret
= -ENOENT
;
1582 if (offset
> sizeof(struct fc_host_statistics
) ||
1583 offset
% sizeof(u64
) != 0)
1586 if (i
->f
->get_fc_host_stats
) {
1587 stats
= (i
->f
->get_fc_host_stats
)(shost
);
1589 ret
= snprintf(buf
, 20, "0x%llx\n",
1590 (unsigned long long)*(u64
*)(((u8
*) stats
) + offset
));
1596 /* generate a read-only statistics attribute */
1597 #define fc_host_statistic(name) \
1598 static ssize_t show_fcstat_##name(struct device *cd, \
1599 struct device_attribute *attr, \
1602 return fc_stat_show(cd, buf, \
1603 offsetof(struct fc_host_statistics, name)); \
1605 static FC_DEVICE_ATTR(host, name, S_IRUGO, show_fcstat_##name, NULL)
1607 fc_host_statistic(seconds_since_last_reset
);
1608 fc_host_statistic(tx_frames
);
1609 fc_host_statistic(tx_words
);
1610 fc_host_statistic(rx_frames
);
1611 fc_host_statistic(rx_words
);
1612 fc_host_statistic(lip_count
);
1613 fc_host_statistic(nos_count
);
1614 fc_host_statistic(error_frames
);
1615 fc_host_statistic(dumped_frames
);
1616 fc_host_statistic(link_failure_count
);
1617 fc_host_statistic(loss_of_sync_count
);
1618 fc_host_statistic(loss_of_signal_count
);
1619 fc_host_statistic(prim_seq_protocol_err_count
);
1620 fc_host_statistic(invalid_tx_word_count
);
1621 fc_host_statistic(invalid_crc_count
);
1622 fc_host_statistic(fcp_input_requests
);
1623 fc_host_statistic(fcp_output_requests
);
1624 fc_host_statistic(fcp_control_requests
);
1625 fc_host_statistic(fcp_input_megabytes
);
1626 fc_host_statistic(fcp_output_megabytes
);
1629 fc_reset_statistics(struct device
*dev
, struct device_attribute
*attr
,
1630 const char *buf
, size_t count
)
1632 struct Scsi_Host
*shost
= transport_class_to_shost(dev
);
1633 struct fc_internal
*i
= to_fc_internal(shost
->transportt
);
1635 /* ignore any data value written to the attribute */
1636 if (i
->f
->reset_fc_host_stats
) {
1637 i
->f
->reset_fc_host_stats(shost
);
1643 static FC_DEVICE_ATTR(host
, reset_statistics
, S_IWUSR
, NULL
,
1644 fc_reset_statistics
);
1646 static struct attribute
*fc_statistics_attrs
[] = {
1647 &device_attr_host_seconds_since_last_reset
.attr
,
1648 &device_attr_host_tx_frames
.attr
,
1649 &device_attr_host_tx_words
.attr
,
1650 &device_attr_host_rx_frames
.attr
,
1651 &device_attr_host_rx_words
.attr
,
1652 &device_attr_host_lip_count
.attr
,
1653 &device_attr_host_nos_count
.attr
,
1654 &device_attr_host_error_frames
.attr
,
1655 &device_attr_host_dumped_frames
.attr
,
1656 &device_attr_host_link_failure_count
.attr
,
1657 &device_attr_host_loss_of_sync_count
.attr
,
1658 &device_attr_host_loss_of_signal_count
.attr
,
1659 &device_attr_host_prim_seq_protocol_err_count
.attr
,
1660 &device_attr_host_invalid_tx_word_count
.attr
,
1661 &device_attr_host_invalid_crc_count
.attr
,
1662 &device_attr_host_fcp_input_requests
.attr
,
1663 &device_attr_host_fcp_output_requests
.attr
,
1664 &device_attr_host_fcp_control_requests
.attr
,
1665 &device_attr_host_fcp_input_megabytes
.attr
,
1666 &device_attr_host_fcp_output_megabytes
.attr
,
1667 &device_attr_host_reset_statistics
.attr
,
1671 static struct attribute_group fc_statistics_group
= {
1672 .name
= "statistics",
1673 .attrs
= fc_statistics_attrs
,
1677 /* Host Vport Attributes */
1680 fc_parse_wwn(const char *ns
, u64
*nm
)
1685 memset(wwn
, 0, sizeof(wwn
));
1687 /* Validate and store the new name */
1688 for (i
=0, j
=0; i
< 16; i
++) {
1689 if ((*ns
>= 'a') && (*ns
<= 'f'))
1690 j
= ((j
<< 4) | ((*ns
++ -'a') + 10));
1691 else if ((*ns
>= 'A') && (*ns
<= 'F'))
1692 j
= ((j
<< 4) | ((*ns
++ -'A') + 10));
1693 else if ((*ns
>= '0') && (*ns
<= '9'))
1694 j
= ((j
<< 4) | (*ns
++ -'0'));
1698 wwn
[i
/2] = j
& 0xff;
1703 *nm
= wwn_to_u64(wwn
);
1710 * "Short-cut" sysfs variable to create a new vport on a FC Host.
1711 * Input is a string of the form "<WWPN>:<WWNN>". Other attributes
1712 * will default to a NPIV-based FCP_Initiator; The WWNs are specified
1713 * as hex characters, and may *not* contain any prefixes (e.g. 0x, x, etc)
1716 store_fc_host_vport_create(struct device
*dev
, struct device_attribute
*attr
,
1717 const char *buf
, size_t count
)
1719 struct Scsi_Host
*shost
= transport_class_to_shost(dev
);
1720 struct fc_vport_identifiers vid
;
1721 struct fc_vport
*vport
;
1722 unsigned int cnt
=count
;
1725 memset(&vid
, 0, sizeof(vid
));
1727 /* count may include a LF at end of string */
1728 if (buf
[cnt
-1] == '\n')
1731 /* validate we have enough characters for WWPN */
1732 if ((cnt
!= (16+1+16)) || (buf
[16] != ':'))
1735 stat
= fc_parse_wwn(&buf
[0], &vid
.port_name
);
1739 stat
= fc_parse_wwn(&buf
[17], &vid
.node_name
);
1743 vid
.roles
= FC_PORT_ROLE_FCP_INITIATOR
;
1744 vid
.vport_type
= FC_PORTTYPE_NPIV
;
1745 /* vid.symbolic_name is already zero/NULL's */
1746 vid
.disable
= false; /* always enabled */
1748 /* we only allow support on Channel 0 !!! */
1749 stat
= fc_vport_setup(shost
, 0, &shost
->shost_gendev
, &vid
, &vport
);
1750 return stat
? stat
: count
;
1752 static FC_DEVICE_ATTR(host
, vport_create
, S_IWUSR
, NULL
,
1753 store_fc_host_vport_create
);
1757 * "Short-cut" sysfs variable to delete a vport on a FC Host.
1758 * Vport is identified by a string containing "<WWPN>:<WWNN>".
1759 * The WWNs are specified as hex characters, and may *not* contain
1760 * any prefixes (e.g. 0x, x, etc)
1763 store_fc_host_vport_delete(struct device
*dev
, struct device_attribute
*attr
,
1764 const char *buf
, size_t count
)
1766 struct Scsi_Host
*shost
= transport_class_to_shost(dev
);
1767 struct fc_host_attrs
*fc_host
= shost_to_fc_host(shost
);
1768 struct fc_vport
*vport
;
1770 unsigned long flags
;
1771 unsigned int cnt
=count
;
1774 /* count may include a LF at end of string */
1775 if (buf
[cnt
-1] == '\n')
1778 /* validate we have enough characters for WWPN */
1779 if ((cnt
!= (16+1+16)) || (buf
[16] != ':'))
1782 stat
= fc_parse_wwn(&buf
[0], &wwpn
);
1786 stat
= fc_parse_wwn(&buf
[17], &wwnn
);
1790 spin_lock_irqsave(shost
->host_lock
, flags
);
1792 /* we only allow support on Channel 0 !!! */
1793 list_for_each_entry(vport
, &fc_host
->vports
, peers
) {
1794 if ((vport
->channel
== 0) &&
1795 (vport
->port_name
== wwpn
) && (vport
->node_name
== wwnn
)) {
1800 spin_unlock_irqrestore(shost
->host_lock
, flags
);
1805 stat
= fc_vport_terminate(vport
);
1806 return stat
? stat
: count
;
1808 static FC_DEVICE_ATTR(host
, vport_delete
, S_IWUSR
, NULL
,
1809 store_fc_host_vport_delete
);
1812 static int fc_host_match(struct attribute_container
*cont
,
1815 struct Scsi_Host
*shost
;
1816 struct fc_internal
*i
;
1818 if (!scsi_is_host_device(dev
))
1821 shost
= dev_to_shost(dev
);
1822 if (!shost
->transportt
|| shost
->transportt
->host_attrs
.ac
.class
1823 != &fc_host_class
.class)
1826 i
= to_fc_internal(shost
->transportt
);
1828 return &i
->t
.host_attrs
.ac
== cont
;
1831 static int fc_target_match(struct attribute_container
*cont
,
1834 struct Scsi_Host
*shost
;
1835 struct fc_internal
*i
;
1837 if (!scsi_is_target_device(dev
))
1840 shost
= dev_to_shost(dev
->parent
);
1841 if (!shost
->transportt
|| shost
->transportt
->host_attrs
.ac
.class
1842 != &fc_host_class
.class)
1845 i
= to_fc_internal(shost
->transportt
);
1847 return &i
->t
.target_attrs
.ac
== cont
;
1850 static void fc_rport_dev_release(struct device
*dev
)
1852 struct fc_rport
*rport
= dev_to_rport(dev
);
1853 put_device(dev
->parent
);
1857 int scsi_is_fc_rport(const struct device
*dev
)
1859 return dev
->release
== fc_rport_dev_release
;
1861 EXPORT_SYMBOL(scsi_is_fc_rport
);
1863 static int fc_rport_match(struct attribute_container
*cont
,
1866 struct Scsi_Host
*shost
;
1867 struct fc_internal
*i
;
1869 if (!scsi_is_fc_rport(dev
))
1872 shost
= dev_to_shost(dev
->parent
);
1873 if (!shost
->transportt
|| shost
->transportt
->host_attrs
.ac
.class
1874 != &fc_host_class
.class)
1877 i
= to_fc_internal(shost
->transportt
);
1879 return &i
->rport_attr_cont
.ac
== cont
;
1883 static void fc_vport_dev_release(struct device
*dev
)
1885 struct fc_vport
*vport
= dev_to_vport(dev
);
1886 put_device(dev
->parent
); /* release kobj parent */
1890 int scsi_is_fc_vport(const struct device
*dev
)
1892 return dev
->release
== fc_vport_dev_release
;
1894 EXPORT_SYMBOL(scsi_is_fc_vport
);
1896 static int fc_vport_match(struct attribute_container
*cont
,
1899 struct fc_vport
*vport
;
1900 struct Scsi_Host
*shost
;
1901 struct fc_internal
*i
;
1903 if (!scsi_is_fc_vport(dev
))
1905 vport
= dev_to_vport(dev
);
1907 shost
= vport_to_shost(vport
);
1908 if (!shost
->transportt
|| shost
->transportt
->host_attrs
.ac
.class
1909 != &fc_host_class
.class)
1912 i
= to_fc_internal(shost
->transportt
);
1913 return &i
->vport_attr_cont
.ac
== cont
;
1918 * fc_timed_out - FC Transport I/O timeout intercept handler
1919 * @scmd: The SCSI command which timed out
1921 * This routine protects against error handlers getting invoked while a
1922 * rport is in a blocked state, typically due to a temporarily loss of
1923 * connectivity. If the error handlers are allowed to proceed, requests
1924 * to abort i/o, reset the target, etc will likely fail as there is no way
1925 * to communicate with the device to perform the requested function. These
1926 * failures may result in the midlayer taking the device offline, requiring
1927 * manual intervention to restore operation.
1929 * This routine, called whenever an i/o times out, validates the state of
1930 * the underlying rport. If the rport is blocked, it returns
1931 * EH_RESET_TIMER, which will continue to reschedule the timeout.
1932 * Eventually, either the device will return, or devloss_tmo will fire,
1933 * and when the timeout then fires, it will be handled normally.
1934 * If the rport is not blocked, normal error handling continues.
1937 * This routine assumes no locks are held on entry.
1939 static enum blk_eh_timer_return
1940 fc_timed_out(struct scsi_cmnd
*scmd
)
1942 struct fc_rport
*rport
= starget_to_rport(scsi_target(scmd
->device
));
1944 if (rport
->port_state
== FC_PORTSTATE_BLOCKED
)
1945 return BLK_EH_RESET_TIMER
;
1947 return BLK_EH_NOT_HANDLED
;
1951 * Called by fc_user_scan to locate an rport on the shost that
1952 * matches the channel and target id, and invoke scsi_scan_target()
1956 fc_user_scan_tgt(struct Scsi_Host
*shost
, uint channel
, uint id
, uint lun
)
1958 struct fc_rport
*rport
;
1959 unsigned long flags
;
1961 spin_lock_irqsave(shost
->host_lock
, flags
);
1963 list_for_each_entry(rport
, &fc_host_rports(shost
), peers
) {
1964 if (rport
->scsi_target_id
== -1)
1967 if (rport
->port_state
!= FC_PORTSTATE_ONLINE
)
1970 if ((channel
== rport
->channel
) &&
1971 (id
== rport
->scsi_target_id
)) {
1972 spin_unlock_irqrestore(shost
->host_lock
, flags
);
1973 scsi_scan_target(&rport
->dev
, channel
, id
, lun
, 1);
1978 spin_unlock_irqrestore(shost
->host_lock
, flags
);
1982 * Called via sysfs scan routines. Necessary, as the FC transport
1983 * wants to place all target objects below the rport object. So this
1984 * routine must invoke the scsi_scan_target() routine with the rport
1985 * object as the parent.
1988 fc_user_scan(struct Scsi_Host
*shost
, uint channel
, uint id
, uint lun
)
1993 if (((channel
!= SCAN_WILD_CARD
) && (channel
> shost
->max_channel
)) ||
1994 ((id
!= SCAN_WILD_CARD
) && (id
>= shost
->max_id
)) ||
1995 ((lun
!= SCAN_WILD_CARD
) && (lun
> shost
->max_lun
)))
1998 if (channel
== SCAN_WILD_CARD
) {
2000 chhi
= shost
->max_channel
+ 1;
2006 if (id
== SCAN_WILD_CARD
) {
2008 tgthi
= shost
->max_id
;
2014 for ( ; chlo
< chhi
; chlo
++)
2015 for ( ; tgtlo
< tgthi
; tgtlo
++)
2016 fc_user_scan_tgt(shost
, chlo
, tgtlo
, lun
);
2021 static int fc_tsk_mgmt_response(struct Scsi_Host
*shost
, u64 nexus
, u64 tm_id
,
2024 struct fc_internal
*i
= to_fc_internal(shost
->transportt
);
2025 return i
->f
->tsk_mgmt_response(shost
, nexus
, tm_id
, result
);
2028 static int fc_it_nexus_response(struct Scsi_Host
*shost
, u64 nexus
, int result
)
2030 struct fc_internal
*i
= to_fc_internal(shost
->transportt
);
2031 return i
->f
->it_nexus_response(shost
, nexus
, result
);
2034 struct scsi_transport_template
*
2035 fc_attach_transport(struct fc_function_template
*ft
)
2038 struct fc_internal
*i
= kzalloc(sizeof(struct fc_internal
),
2044 i
->t
.target_attrs
.ac
.attrs
= &i
->starget_attrs
[0];
2045 i
->t
.target_attrs
.ac
.class = &fc_transport_class
.class;
2046 i
->t
.target_attrs
.ac
.match
= fc_target_match
;
2047 i
->t
.target_size
= sizeof(struct fc_starget_attrs
);
2048 transport_container_register(&i
->t
.target_attrs
);
2050 i
->t
.host_attrs
.ac
.attrs
= &i
->host_attrs
[0];
2051 i
->t
.host_attrs
.ac
.class = &fc_host_class
.class;
2052 i
->t
.host_attrs
.ac
.match
= fc_host_match
;
2053 i
->t
.host_size
= sizeof(struct fc_host_attrs
);
2054 if (ft
->get_fc_host_stats
)
2055 i
->t
.host_attrs
.statistics
= &fc_statistics_group
;
2056 transport_container_register(&i
->t
.host_attrs
);
2058 i
->rport_attr_cont
.ac
.attrs
= &i
->rport_attrs
[0];
2059 i
->rport_attr_cont
.ac
.class = &fc_rport_class
.class;
2060 i
->rport_attr_cont
.ac
.match
= fc_rport_match
;
2061 transport_container_register(&i
->rport_attr_cont
);
2063 i
->vport_attr_cont
.ac
.attrs
= &i
->vport_attrs
[0];
2064 i
->vport_attr_cont
.ac
.class = &fc_vport_class
.class;
2065 i
->vport_attr_cont
.ac
.match
= fc_vport_match
;
2066 transport_container_register(&i
->vport_attr_cont
);
2070 /* Transport uses the shost workq for scsi scanning */
2071 i
->t
.create_work_queue
= 1;
2073 i
->t
.eh_timed_out
= fc_timed_out
;
2075 i
->t
.user_scan
= fc_user_scan
;
2077 /* target-mode drivers' functions */
2078 i
->t
.tsk_mgmt_response
= fc_tsk_mgmt_response
;
2079 i
->t
.it_nexus_response
= fc_it_nexus_response
;
2082 * Setup SCSI Target Attributes.
2085 SETUP_STARGET_ATTRIBUTE_RD(node_name
);
2086 SETUP_STARGET_ATTRIBUTE_RD(port_name
);
2087 SETUP_STARGET_ATTRIBUTE_RD(port_id
);
2089 BUG_ON(count
> FC_STARGET_NUM_ATTRS
);
2091 i
->starget_attrs
[count
] = NULL
;
2095 * Setup SCSI Host Attributes.
2098 SETUP_HOST_ATTRIBUTE_RD(node_name
);
2099 SETUP_HOST_ATTRIBUTE_RD(port_name
);
2100 SETUP_HOST_ATTRIBUTE_RD(permanent_port_name
);
2101 SETUP_HOST_ATTRIBUTE_RD(supported_classes
);
2102 SETUP_HOST_ATTRIBUTE_RD(supported_fc4s
);
2103 SETUP_HOST_ATTRIBUTE_RD(supported_speeds
);
2104 SETUP_HOST_ATTRIBUTE_RD(maxframe_size
);
2105 if (ft
->vport_create
) {
2106 SETUP_HOST_ATTRIBUTE_RD_NS(max_npiv_vports
);
2107 SETUP_HOST_ATTRIBUTE_RD_NS(npiv_vports_inuse
);
2109 SETUP_HOST_ATTRIBUTE_RD(serial_number
);
2111 SETUP_HOST_ATTRIBUTE_RD(port_id
);
2112 SETUP_HOST_ATTRIBUTE_RD(port_type
);
2113 SETUP_HOST_ATTRIBUTE_RD(port_state
);
2114 SETUP_HOST_ATTRIBUTE_RD(active_fc4s
);
2115 SETUP_HOST_ATTRIBUTE_RD(speed
);
2116 SETUP_HOST_ATTRIBUTE_RD(fabric_name
);
2117 SETUP_HOST_ATTRIBUTE_RD(symbolic_name
);
2118 SETUP_HOST_ATTRIBUTE_RW(system_hostname
);
2120 /* Transport-managed attributes */
2121 SETUP_PRIVATE_HOST_ATTRIBUTE_RW(tgtid_bind_type
);
2122 if (ft
->issue_fc_host_lip
)
2123 SETUP_PRIVATE_HOST_ATTRIBUTE_RW(issue_lip
);
2124 if (ft
->vport_create
)
2125 SETUP_PRIVATE_HOST_ATTRIBUTE_RW(vport_create
);
2126 if (ft
->vport_delete
)
2127 SETUP_PRIVATE_HOST_ATTRIBUTE_RW(vport_delete
);
2129 BUG_ON(count
> FC_HOST_NUM_ATTRS
);
2131 i
->host_attrs
[count
] = NULL
;
2134 * Setup Remote Port Attributes.
2137 SETUP_RPORT_ATTRIBUTE_RD(maxframe_size
);
2138 SETUP_RPORT_ATTRIBUTE_RD(supported_classes
);
2139 SETUP_RPORT_ATTRIBUTE_RW(dev_loss_tmo
);
2140 SETUP_PRIVATE_RPORT_ATTRIBUTE_RD(node_name
);
2141 SETUP_PRIVATE_RPORT_ATTRIBUTE_RD(port_name
);
2142 SETUP_PRIVATE_RPORT_ATTRIBUTE_RD(port_id
);
2143 SETUP_PRIVATE_RPORT_ATTRIBUTE_RD(roles
);
2144 SETUP_PRIVATE_RPORT_ATTRIBUTE_RD(port_state
);
2145 SETUP_PRIVATE_RPORT_ATTRIBUTE_RD(scsi_target_id
);
2146 SETUP_PRIVATE_RPORT_ATTRIBUTE_RW(fast_io_fail_tmo
);
2148 BUG_ON(count
> FC_RPORT_NUM_ATTRS
);
2150 i
->rport_attrs
[count
] = NULL
;
2153 * Setup Virtual Port Attributes.
2156 SETUP_PRIVATE_VPORT_ATTRIBUTE_RD(vport_state
);
2157 SETUP_PRIVATE_VPORT_ATTRIBUTE_RD(vport_last_state
);
2158 SETUP_PRIVATE_VPORT_ATTRIBUTE_RD(node_name
);
2159 SETUP_PRIVATE_VPORT_ATTRIBUTE_RD(port_name
);
2160 SETUP_PRIVATE_VPORT_ATTRIBUTE_RD(roles
);
2161 SETUP_PRIVATE_VPORT_ATTRIBUTE_RD(vport_type
);
2162 SETUP_VPORT_ATTRIBUTE_RW(symbolic_name
);
2163 SETUP_VPORT_ATTRIBUTE_WR(vport_delete
);
2164 SETUP_VPORT_ATTRIBUTE_WR(vport_disable
);
2166 BUG_ON(count
> FC_VPORT_NUM_ATTRS
);
2168 i
->vport_attrs
[count
] = NULL
;
2172 EXPORT_SYMBOL(fc_attach_transport
);
2174 void fc_release_transport(struct scsi_transport_template
*t
)
2176 struct fc_internal
*i
= to_fc_internal(t
);
2178 transport_container_unregister(&i
->t
.target_attrs
);
2179 transport_container_unregister(&i
->t
.host_attrs
);
2180 transport_container_unregister(&i
->rport_attr_cont
);
2181 transport_container_unregister(&i
->vport_attr_cont
);
2185 EXPORT_SYMBOL(fc_release_transport
);
2188 * fc_queue_work - Queue work to the fc_host workqueue.
2189 * @shost: Pointer to Scsi_Host bound to fc_host.
2190 * @work: Work to queue for execution.
2193 * 1 - work queued for execution
2194 * 0 - work is already queued
2195 * -EINVAL - work queue doesn't exist
2198 fc_queue_work(struct Scsi_Host
*shost
, struct work_struct
*work
)
2200 if (unlikely(!fc_host_work_q(shost
))) {
2202 "ERROR: FC host '%s' attempted to queue work, "
2203 "when no workqueue created.\n", shost
->hostt
->name
);
2209 return queue_work(fc_host_work_q(shost
), work
);
2213 * fc_flush_work - Flush a fc_host's workqueue.
2214 * @shost: Pointer to Scsi_Host bound to fc_host.
2217 fc_flush_work(struct Scsi_Host
*shost
)
2219 if (!fc_host_work_q(shost
)) {
2221 "ERROR: FC host '%s' attempted to flush work, "
2222 "when no workqueue created.\n", shost
->hostt
->name
);
2227 flush_workqueue(fc_host_work_q(shost
));
2231 * fc_queue_devloss_work - Schedule work for the fc_host devloss workqueue.
2232 * @shost: Pointer to Scsi_Host bound to fc_host.
2233 * @work: Work to queue for execution.
2234 * @delay: jiffies to delay the work queuing
2237 * 1 on success / 0 already queued / < 0 for error
2240 fc_queue_devloss_work(struct Scsi_Host
*shost
, struct delayed_work
*work
,
2241 unsigned long delay
)
2243 if (unlikely(!fc_host_devloss_work_q(shost
))) {
2245 "ERROR: FC host '%s' attempted to queue work, "
2246 "when no workqueue created.\n", shost
->hostt
->name
);
2252 return queue_delayed_work(fc_host_devloss_work_q(shost
), work
, delay
);
2256 * fc_flush_devloss - Flush a fc_host's devloss workqueue.
2257 * @shost: Pointer to Scsi_Host bound to fc_host.
2260 fc_flush_devloss(struct Scsi_Host
*shost
)
2262 if (!fc_host_devloss_work_q(shost
)) {
2264 "ERROR: FC host '%s' attempted to flush work, "
2265 "when no workqueue created.\n", shost
->hostt
->name
);
2270 flush_workqueue(fc_host_devloss_work_q(shost
));
2275 * fc_remove_host - called to terminate any fc_transport-related elements for a scsi host.
2276 * @shost: Which &Scsi_Host
2278 * This routine is expected to be called immediately preceeding the
2279 * a driver's call to scsi_remove_host().
2281 * WARNING: A driver utilizing the fc_transport, which fails to call
2282 * this routine prior to scsi_remove_host(), will leave dangling
2283 * objects in /sys/class/fc_remote_ports. Access to any of these
2284 * objects can result in a system crash !!!
2287 * This routine assumes no locks are held on entry.
2290 fc_remove_host(struct Scsi_Host
*shost
)
2292 struct fc_vport
*vport
= NULL
, *next_vport
= NULL
;
2293 struct fc_rport
*rport
= NULL
, *next_rport
= NULL
;
2294 struct workqueue_struct
*work_q
;
2295 struct fc_host_attrs
*fc_host
= shost_to_fc_host(shost
);
2296 unsigned long flags
;
2298 spin_lock_irqsave(shost
->host_lock
, flags
);
2300 /* Remove any vports */
2301 list_for_each_entry_safe(vport
, next_vport
, &fc_host
->vports
, peers
)
2302 fc_queue_work(shost
, &vport
->vport_delete_work
);
2304 /* Remove any remote ports */
2305 list_for_each_entry_safe(rport
, next_rport
,
2306 &fc_host
->rports
, peers
) {
2307 list_del(&rport
->peers
);
2308 rport
->port_state
= FC_PORTSTATE_DELETED
;
2309 fc_queue_work(shost
, &rport
->rport_delete_work
);
2312 list_for_each_entry_safe(rport
, next_rport
,
2313 &fc_host
->rport_bindings
, peers
) {
2314 list_del(&rport
->peers
);
2315 rport
->port_state
= FC_PORTSTATE_DELETED
;
2316 fc_queue_work(shost
, &rport
->rport_delete_work
);
2319 spin_unlock_irqrestore(shost
->host_lock
, flags
);
2321 /* flush all scan work items */
2322 scsi_flush_work(shost
);
2324 /* flush all stgt delete, and rport delete work items, then kill it */
2325 if (fc_host
->work_q
) {
2326 work_q
= fc_host
->work_q
;
2327 fc_host
->work_q
= NULL
;
2328 destroy_workqueue(work_q
);
2331 /* flush all devloss work items, then kill it */
2332 if (fc_host
->devloss_work_q
) {
2333 work_q
= fc_host
->devloss_work_q
;
2334 fc_host
->devloss_work_q
= NULL
;
2335 destroy_workqueue(work_q
);
2338 EXPORT_SYMBOL(fc_remove_host
);
2340 static void fc_terminate_rport_io(struct fc_rport
*rport
)
2342 struct Scsi_Host
*shost
= rport_to_shost(rport
);
2343 struct fc_internal
*i
= to_fc_internal(shost
->transportt
);
2345 /* Involve the LLDD if possible to terminate all io on the rport. */
2346 if (i
->f
->terminate_rport_io
)
2347 i
->f
->terminate_rport_io(rport
);
2350 * must unblock to flush queued IO. The caller will have set
2351 * the port_state or flags, so that fc_remote_port_chkready will
2354 scsi_target_unblock(&rport
->dev
);
2358 * fc_starget_delete - called to delete the scsi decendents of an rport
2359 * @work: remote port to be operated on.
2361 * Deletes target and all sdevs.
2364 fc_starget_delete(struct work_struct
*work
)
2366 struct fc_rport
*rport
=
2367 container_of(work
, struct fc_rport
, stgt_delete_work
);
2369 fc_terminate_rport_io(rport
);
2370 scsi_remove_target(&rport
->dev
);
2375 * fc_rport_final_delete - finish rport termination and delete it.
2376 * @work: remote port to be deleted.
2379 fc_rport_final_delete(struct work_struct
*work
)
2381 struct fc_rport
*rport
=
2382 container_of(work
, struct fc_rport
, rport_delete_work
);
2383 struct device
*dev
= &rport
->dev
;
2384 struct Scsi_Host
*shost
= rport_to_shost(rport
);
2385 struct fc_internal
*i
= to_fc_internal(shost
->transportt
);
2386 unsigned long flags
;
2389 * if a scan is pending, flush the SCSI Host work_q so that
2390 * that we can reclaim the rport scan work element.
2392 if (rport
->flags
& FC_RPORT_SCAN_PENDING
)
2393 scsi_flush_work(shost
);
2395 fc_terminate_rport_io(rport
);
2398 * Cancel any outstanding timers. These should really exist
2399 * only when rmmod'ing the LLDD and we're asking for
2400 * immediate termination of the rports
2402 spin_lock_irqsave(shost
->host_lock
, flags
);
2403 if (rport
->flags
& FC_RPORT_DEVLOSS_PENDING
) {
2404 spin_unlock_irqrestore(shost
->host_lock
, flags
);
2405 if (!cancel_delayed_work(&rport
->fail_io_work
))
2406 fc_flush_devloss(shost
);
2407 if (!cancel_delayed_work(&rport
->dev_loss_work
))
2408 fc_flush_devloss(shost
);
2409 spin_lock_irqsave(shost
->host_lock
, flags
);
2410 rport
->flags
&= ~FC_RPORT_DEVLOSS_PENDING
;
2412 spin_unlock_irqrestore(shost
->host_lock
, flags
);
2414 /* Delete SCSI target and sdevs */
2415 if (rport
->scsi_target_id
!= -1)
2416 fc_starget_delete(&rport
->stgt_delete_work
);
2419 * Notify the driver that the rport is now dead. The LLDD will
2420 * also guarantee that any communication to the rport is terminated
2422 * Avoid this call if we already called it when we preserved the
2423 * rport for the binding.
2425 if (!(rport
->flags
& FC_RPORT_DEVLOSS_CALLBK_DONE
) &&
2426 (i
->f
->dev_loss_tmo_callbk
))
2427 i
->f
->dev_loss_tmo_callbk(rport
);
2429 fc_bsg_remove(rport
->rqst_q
);
2431 transport_remove_device(dev
);
2433 transport_destroy_device(dev
);
2434 put_device(&shost
->shost_gendev
); /* for fc_host->rport list */
2435 put_device(dev
); /* for self-reference */
2440 * fc_rport_create - allocates and creates a remote FC port.
2441 * @shost: scsi host the remote port is connected to.
2442 * @channel: Channel on shost port connected to.
2443 * @ids: The world wide names, fc address, and FC4 port
2444 * roles for the remote port.
2446 * Allocates and creates the remoter port structure, including the
2447 * class and sysfs creation.
2450 * This routine assumes no locks are held on entry.
2452 static struct fc_rport
*
2453 fc_rport_create(struct Scsi_Host
*shost
, int channel
,
2454 struct fc_rport_identifiers
*ids
)
2456 struct fc_host_attrs
*fc_host
= shost_to_fc_host(shost
);
2457 struct fc_internal
*fci
= to_fc_internal(shost
->transportt
);
2458 struct fc_rport
*rport
;
2460 unsigned long flags
;
2464 size
= (sizeof(struct fc_rport
) + fci
->f
->dd_fcrport_size
);
2465 rport
= kzalloc(size
, GFP_KERNEL
);
2466 if (unlikely(!rport
)) {
2467 printk(KERN_ERR
"%s: allocation failure\n", __func__
);
2471 rport
->maxframe_size
= -1;
2472 rport
->supported_classes
= FC_COS_UNSPECIFIED
;
2473 rport
->dev_loss_tmo
= fc_dev_loss_tmo
;
2474 memcpy(&rport
->node_name
, &ids
->node_name
, sizeof(rport
->node_name
));
2475 memcpy(&rport
->port_name
, &ids
->port_name
, sizeof(rport
->port_name
));
2476 rport
->port_id
= ids
->port_id
;
2477 rport
->roles
= ids
->roles
;
2478 rport
->port_state
= FC_PORTSTATE_ONLINE
;
2479 if (fci
->f
->dd_fcrport_size
)
2480 rport
->dd_data
= &rport
[1];
2481 rport
->channel
= channel
;
2482 rport
->fast_io_fail_tmo
= -1;
2484 INIT_DELAYED_WORK(&rport
->dev_loss_work
, fc_timeout_deleted_rport
);
2485 INIT_DELAYED_WORK(&rport
->fail_io_work
, fc_timeout_fail_rport_io
);
2486 INIT_WORK(&rport
->scan_work
, fc_scsi_scan_rport
);
2487 INIT_WORK(&rport
->stgt_delete_work
, fc_starget_delete
);
2488 INIT_WORK(&rport
->rport_delete_work
, fc_rport_final_delete
);
2490 spin_lock_irqsave(shost
->host_lock
, flags
);
2492 rport
->number
= fc_host
->next_rport_number
++;
2493 if (rport
->roles
& FC_PORT_ROLE_FCP_TARGET
)
2494 rport
->scsi_target_id
= fc_host
->next_target_id
++;
2496 rport
->scsi_target_id
= -1;
2497 list_add_tail(&rport
->peers
, &fc_host
->rports
);
2498 get_device(&shost
->shost_gendev
); /* for fc_host->rport list */
2500 spin_unlock_irqrestore(shost
->host_lock
, flags
);
2503 device_initialize(dev
); /* takes self reference */
2504 dev
->parent
= get_device(&shost
->shost_gendev
); /* parent reference */
2505 dev
->release
= fc_rport_dev_release
;
2506 dev_set_name(dev
, "rport-%d:%d-%d",
2507 shost
->host_no
, channel
, rport
->number
);
2508 transport_setup_device(dev
);
2510 error
= device_add(dev
);
2512 printk(KERN_ERR
"FC Remote Port device_add failed\n");
2515 transport_add_device(dev
);
2516 transport_configure_device(dev
);
2518 fc_bsg_rportadd(shost
, rport
);
2519 /* ignore any bsg add error - we just can't do sgio */
2521 if (rport
->roles
& FC_PORT_ROLE_FCP_TARGET
) {
2522 /* initiate a scan of the target */
2523 rport
->flags
|= FC_RPORT_SCAN_PENDING
;
2524 scsi_queue_work(shost
, &rport
->scan_work
);
2530 transport_destroy_device(dev
);
2531 spin_lock_irqsave(shost
->host_lock
, flags
);
2532 list_del(&rport
->peers
);
2533 put_device(&shost
->shost_gendev
); /* for fc_host->rport list */
2534 spin_unlock_irqrestore(shost
->host_lock
, flags
);
2535 put_device(dev
->parent
);
2541 * fc_remote_port_add - notify fc transport of the existence of a remote FC port.
2542 * @shost: scsi host the remote port is connected to.
2543 * @channel: Channel on shost port connected to.
2544 * @ids: The world wide names, fc address, and FC4 port
2545 * roles for the remote port.
2547 * The LLDD calls this routine to notify the transport of the existence
2548 * of a remote port. The LLDD provides the unique identifiers (wwpn,wwn)
2549 * of the port, it's FC address (port_id), and the FC4 roles that are
2550 * active for the port.
2552 * For ports that are FCP targets (aka scsi targets), the FC transport
2553 * maintains consistent target id bindings on behalf of the LLDD.
2554 * A consistent target id binding is an assignment of a target id to
2555 * a remote port identifier, which persists while the scsi host is
2556 * attached. The remote port can disappear, then later reappear, and
2557 * it's target id assignment remains the same. This allows for shifts
2558 * in FC addressing (if binding by wwpn or wwnn) with no apparent
2559 * changes to the scsi subsystem which is based on scsi host number and
2560 * target id values. Bindings are only valid during the attachment of
2561 * the scsi host. If the host detaches, then later re-attaches, target
2562 * id bindings may change.
2564 * This routine is responsible for returning a remote port structure.
2565 * The routine will search the list of remote ports it maintains
2566 * internally on behalf of consistent target id mappings. If found, the
2567 * remote port structure will be reused. Otherwise, a new remote port
2568 * structure will be allocated.
2570 * Whenever a remote port is allocated, a new fc_remote_port class
2571 * device is created.
2573 * Should not be called from interrupt context.
2576 * This routine assumes no locks are held on entry.
2579 fc_remote_port_add(struct Scsi_Host
*shost
, int channel
,
2580 struct fc_rport_identifiers
*ids
)
2582 struct fc_internal
*fci
= to_fc_internal(shost
->transportt
);
2583 struct fc_host_attrs
*fc_host
= shost_to_fc_host(shost
);
2584 struct fc_rport
*rport
;
2585 unsigned long flags
;
2588 /* ensure any stgt delete functions are done */
2589 fc_flush_work(shost
);
2592 * Search the list of "active" rports, for an rport that has been
2593 * deleted, but we've held off the real delete while the target
2594 * is in a "blocked" state.
2596 spin_lock_irqsave(shost
->host_lock
, flags
);
2598 list_for_each_entry(rport
, &fc_host
->rports
, peers
) {
2600 if ((rport
->port_state
== FC_PORTSTATE_BLOCKED
) &&
2601 (rport
->channel
== channel
)) {
2603 switch (fc_host
->tgtid_bind_type
) {
2604 case FC_TGTID_BIND_BY_WWPN
:
2605 case FC_TGTID_BIND_NONE
:
2606 if (rport
->port_name
== ids
->port_name
)
2609 case FC_TGTID_BIND_BY_WWNN
:
2610 if (rport
->node_name
== ids
->node_name
)
2613 case FC_TGTID_BIND_BY_ID
:
2614 if (rport
->port_id
== ids
->port_id
)
2621 memcpy(&rport
->node_name
, &ids
->node_name
,
2622 sizeof(rport
->node_name
));
2623 memcpy(&rport
->port_name
, &ids
->port_name
,
2624 sizeof(rport
->port_name
));
2625 rport
->port_id
= ids
->port_id
;
2627 rport
->port_state
= FC_PORTSTATE_ONLINE
;
2628 rport
->roles
= ids
->roles
;
2630 spin_unlock_irqrestore(shost
->host_lock
, flags
);
2632 if (fci
->f
->dd_fcrport_size
)
2633 memset(rport
->dd_data
, 0,
2634 fci
->f
->dd_fcrport_size
);
2637 * If we were not a target, cancel the
2638 * io terminate and rport timers, and
2641 * If we were a target, but our new role
2642 * doesn't indicate a target, leave the
2643 * timers running expecting the role to
2644 * change as the target fully logs in. If
2645 * it doesn't, the target will be torn down.
2647 * If we were a target, and our role shows
2648 * we're still a target, cancel the timers
2649 * and kick off a scan.
2652 /* was a target, not in roles */
2653 if ((rport
->scsi_target_id
!= -1) &&
2654 (!(ids
->roles
& FC_PORT_ROLE_FCP_TARGET
)))
2658 * Stop the fail io and dev_loss timers.
2659 * If they flush, the port_state will
2660 * be checked and will NOOP the function.
2662 if (!cancel_delayed_work(&rport
->fail_io_work
))
2663 fc_flush_devloss(shost
);
2664 if (!cancel_delayed_work(&rport
->dev_loss_work
))
2665 fc_flush_devloss(shost
);
2667 spin_lock_irqsave(shost
->host_lock
, flags
);
2669 rport
->flags
&= ~(FC_RPORT_FAST_FAIL_TIMEDOUT
|
2670 FC_RPORT_DEVLOSS_PENDING
|
2671 FC_RPORT_DEVLOSS_CALLBK_DONE
);
2673 /* if target, initiate a scan */
2674 if (rport
->scsi_target_id
!= -1) {
2675 rport
->flags
|= FC_RPORT_SCAN_PENDING
;
2676 scsi_queue_work(shost
,
2678 spin_unlock_irqrestore(shost
->host_lock
,
2680 scsi_target_unblock(&rport
->dev
);
2682 spin_unlock_irqrestore(shost
->host_lock
,
2685 fc_bsg_goose_queue(rport
);
2693 * Search the bindings array
2694 * Note: if never a FCP target, you won't be on this list
2696 if (fc_host
->tgtid_bind_type
!= FC_TGTID_BIND_NONE
) {
2698 /* search for a matching consistent binding */
2700 list_for_each_entry(rport
, &fc_host
->rport_bindings
,
2702 if (rport
->channel
!= channel
)
2705 switch (fc_host
->tgtid_bind_type
) {
2706 case FC_TGTID_BIND_BY_WWPN
:
2707 if (rport
->port_name
== ids
->port_name
)
2710 case FC_TGTID_BIND_BY_WWNN
:
2711 if (rport
->node_name
== ids
->node_name
)
2714 case FC_TGTID_BIND_BY_ID
:
2715 if (rport
->port_id
== ids
->port_id
)
2718 case FC_TGTID_BIND_NONE
: /* to keep compiler happy */
2723 list_move_tail(&rport
->peers
, &fc_host
->rports
);
2729 memcpy(&rport
->node_name
, &ids
->node_name
,
2730 sizeof(rport
->node_name
));
2731 memcpy(&rport
->port_name
, &ids
->port_name
,
2732 sizeof(rport
->port_name
));
2733 rport
->port_id
= ids
->port_id
;
2734 rport
->roles
= ids
->roles
;
2735 rport
->port_state
= FC_PORTSTATE_ONLINE
;
2736 rport
->flags
&= ~FC_RPORT_FAST_FAIL_TIMEDOUT
;
2738 if (fci
->f
->dd_fcrport_size
)
2739 memset(rport
->dd_data
, 0,
2740 fci
->f
->dd_fcrport_size
);
2742 if (rport
->roles
& FC_PORT_ROLE_FCP_TARGET
) {
2743 /* initiate a scan of the target */
2744 rport
->flags
|= FC_RPORT_SCAN_PENDING
;
2745 scsi_queue_work(shost
, &rport
->scan_work
);
2746 spin_unlock_irqrestore(shost
->host_lock
, flags
);
2747 scsi_target_unblock(&rport
->dev
);
2749 spin_unlock_irqrestore(shost
->host_lock
, flags
);
2755 spin_unlock_irqrestore(shost
->host_lock
, flags
);
2757 /* No consistent binding found - create new remote port entry */
2758 rport
= fc_rport_create(shost
, channel
, ids
);
2762 EXPORT_SYMBOL(fc_remote_port_add
);
2766 * fc_remote_port_delete - notifies the fc transport that a remote port is no longer in existence.
2767 * @rport: The remote port that no longer exists
2769 * The LLDD calls this routine to notify the transport that a remote
2770 * port is no longer part of the topology. Note: Although a port
2771 * may no longer be part of the topology, it may persist in the remote
2772 * ports displayed by the fc_host. We do this under 2 conditions:
2773 * 1) If the port was a scsi target, we delay its deletion by "blocking" it.
2774 * This allows the port to temporarily disappear, then reappear without
2775 * disrupting the SCSI device tree attached to it. During the "blocked"
2776 * period the port will still exist.
2777 * 2) If the port was a scsi target and disappears for longer than we
2778 * expect, we'll delete the port and the tear down the SCSI device tree
2779 * attached to it. However, we want to semi-persist the target id assigned
2780 * to that port if it eventually does exist. The port structure will
2781 * remain (although with minimal information) so that the target id
2784 * If the remote port is not an FCP Target, it will be fully torn down
2785 * and deallocated, including the fc_remote_port class device.
2787 * If the remote port is an FCP Target, the port will be placed in a
2788 * temporary blocked state. From the LLDD's perspective, the rport no
2789 * longer exists. From the SCSI midlayer's perspective, the SCSI target
2790 * exists, but all sdevs on it are blocked from further I/O. The following
2793 * If the remote port does not return (signaled by a LLDD call to
2794 * fc_remote_port_add()) within the dev_loss_tmo timeout, then the
2795 * scsi target is removed - killing all outstanding i/o and removing the
2796 * scsi devices attached ot it. The port structure will be marked Not
2797 * Present and be partially cleared, leaving only enough information to
2798 * recognize the remote port relative to the scsi target id binding if
2799 * it later appears. The port will remain as long as there is a valid
2800 * binding (e.g. until the user changes the binding type or unloads the
2801 * scsi host with the binding).
2803 * If the remote port returns within the dev_loss_tmo value (and matches
2804 * according to the target id binding type), the port structure will be
2805 * reused. If it is no longer a SCSI target, the target will be torn
2806 * down. If it continues to be a SCSI target, then the target will be
2807 * unblocked (allowing i/o to be resumed), and a scan will be activated
2808 * to ensure that all luns are detected.
2810 * Called from normal process context only - cannot be called from interrupt.
2813 * This routine assumes no locks are held on entry.
2816 fc_remote_port_delete(struct fc_rport
*rport
)
2818 struct Scsi_Host
*shost
= rport_to_shost(rport
);
2819 int timeout
= rport
->dev_loss_tmo
;
2820 unsigned long flags
;
2823 * No need to flush the fc_host work_q's, as all adds are synchronous.
2825 * We do need to reclaim the rport scan work element, so eventually
2826 * (in fc_rport_final_delete()) we'll flush the scsi host work_q if
2827 * there's still a scan pending.
2830 spin_lock_irqsave(shost
->host_lock
, flags
);
2832 if (rport
->port_state
!= FC_PORTSTATE_ONLINE
) {
2833 spin_unlock_irqrestore(shost
->host_lock
, flags
);
2838 * In the past, we if this was not an FCP-Target, we would
2839 * unconditionally just jump to deleting the rport.
2840 * However, rports can be used as node containers by the LLDD,
2841 * and its not appropriate to just terminate the rport at the
2842 * first sign of a loss in connectivity. The LLDD may want to
2843 * send ELS traffic to re-validate the login. If the rport is
2844 * immediately deleted, it makes it inappropriate for a node
2846 * So... we now unconditionally wait dev_loss_tmo before
2847 * destroying an rport.
2850 rport
->port_state
= FC_PORTSTATE_BLOCKED
;
2852 rport
->flags
|= FC_RPORT_DEVLOSS_PENDING
;
2854 spin_unlock_irqrestore(shost
->host_lock
, flags
);
2856 if (rport
->roles
& FC_PORT_ROLE_FCP_INITIATOR
&&
2857 shost
->active_mode
& MODE_TARGET
)
2858 fc_tgt_it_nexus_destroy(shost
, (unsigned long)rport
);
2860 scsi_target_block(&rport
->dev
);
2862 /* see if we need to kill io faster than waiting for device loss */
2863 if ((rport
->fast_io_fail_tmo
!= -1) &&
2864 (rport
->fast_io_fail_tmo
< timeout
))
2865 fc_queue_devloss_work(shost
, &rport
->fail_io_work
,
2866 rport
->fast_io_fail_tmo
* HZ
);
2868 /* cap the length the devices can be blocked until they are deleted */
2869 fc_queue_devloss_work(shost
, &rport
->dev_loss_work
, timeout
* HZ
);
2871 EXPORT_SYMBOL(fc_remote_port_delete
);
2874 * fc_remote_port_rolechg - notifies the fc transport that the roles on a remote may have changed.
2875 * @rport: The remote port that changed.
2876 * @roles: New roles for this port.
2878 * Description: The LLDD calls this routine to notify the transport that the
2879 * roles on a remote port may have changed. The largest effect of this is
2880 * if a port now becomes a FCP Target, it must be allocated a
2881 * scsi target id. If the port is no longer a FCP target, any
2882 * scsi target id value assigned to it will persist in case the
2883 * role changes back to include FCP Target. No changes in the scsi
2884 * midlayer will be invoked if the role changes (in the expectation
2885 * that the role will be resumed. If it doesn't normal error processing
2888 * Should not be called from interrupt context.
2891 * This routine assumes no locks are held on entry.
2894 fc_remote_port_rolechg(struct fc_rport
*rport
, u32 roles
)
2896 struct Scsi_Host
*shost
= rport_to_shost(rport
);
2897 struct fc_host_attrs
*fc_host
= shost_to_fc_host(shost
);
2898 unsigned long flags
;
2902 spin_lock_irqsave(shost
->host_lock
, flags
);
2903 if (roles
& FC_PORT_ROLE_FCP_TARGET
) {
2904 if (rport
->scsi_target_id
== -1) {
2905 rport
->scsi_target_id
= fc_host
->next_target_id
++;
2907 } else if (!(rport
->roles
& FC_PORT_ROLE_FCP_TARGET
))
2909 } else if (shost
->active_mode
& MODE_TARGET
) {
2910 ret
= fc_tgt_it_nexus_create(shost
, (unsigned long)rport
,
2911 (char *)&rport
->node_name
);
2913 printk(KERN_ERR
"FC Remore Port tgt nexus failed %d\n",
2917 rport
->roles
= roles
;
2919 spin_unlock_irqrestore(shost
->host_lock
, flags
);
2923 * There may have been a delete timer running on the
2924 * port. Ensure that it is cancelled as we now know
2925 * the port is an FCP Target.
2926 * Note: we know the rport is exists and in an online
2927 * state as the LLDD would not have had an rport
2928 * reference to pass us.
2930 * Take no action on the del_timer failure as the state
2931 * machine state change will validate the
2934 if (!cancel_delayed_work(&rport
->fail_io_work
))
2935 fc_flush_devloss(shost
);
2936 if (!cancel_delayed_work(&rport
->dev_loss_work
))
2937 fc_flush_devloss(shost
);
2939 spin_lock_irqsave(shost
->host_lock
, flags
);
2940 rport
->flags
&= ~(FC_RPORT_FAST_FAIL_TIMEDOUT
|
2941 FC_RPORT_DEVLOSS_PENDING
);
2942 spin_unlock_irqrestore(shost
->host_lock
, flags
);
2944 /* ensure any stgt delete functions are done */
2945 fc_flush_work(shost
);
2947 /* initiate a scan of the target */
2948 spin_lock_irqsave(shost
->host_lock
, flags
);
2949 rport
->flags
|= FC_RPORT_SCAN_PENDING
;
2950 scsi_queue_work(shost
, &rport
->scan_work
);
2951 spin_unlock_irqrestore(shost
->host_lock
, flags
);
2952 scsi_target_unblock(&rport
->dev
);
2955 EXPORT_SYMBOL(fc_remote_port_rolechg
);
2958 * fc_timeout_deleted_rport - Timeout handler for a deleted remote port.
2959 * @work: rport target that failed to reappear in the allotted time.
2961 * Description: An attempt to delete a remote port blocks, and if it fails
2962 * to return in the allotted time this gets called.
2965 fc_timeout_deleted_rport(struct work_struct
*work
)
2967 struct fc_rport
*rport
=
2968 container_of(work
, struct fc_rport
, dev_loss_work
.work
);
2969 struct Scsi_Host
*shost
= rport_to_shost(rport
);
2970 struct fc_internal
*i
= to_fc_internal(shost
->transportt
);
2971 struct fc_host_attrs
*fc_host
= shost_to_fc_host(shost
);
2972 unsigned long flags
;
2974 spin_lock_irqsave(shost
->host_lock
, flags
);
2976 rport
->flags
&= ~FC_RPORT_DEVLOSS_PENDING
;
2979 * If the port is ONLINE, then it came back. If it was a SCSI
2980 * target, validate it still is. If not, tear down the
2981 * scsi_target on it.
2983 if ((rport
->port_state
== FC_PORTSTATE_ONLINE
) &&
2984 (rport
->scsi_target_id
!= -1) &&
2985 !(rport
->roles
& FC_PORT_ROLE_FCP_TARGET
)) {
2986 dev_printk(KERN_ERR
, &rport
->dev
,
2987 "blocked FC remote port time out: no longer"
2988 " a FCP target, removing starget\n");
2989 spin_unlock_irqrestore(shost
->host_lock
, flags
);
2990 scsi_target_unblock(&rport
->dev
);
2991 fc_queue_work(shost
, &rport
->stgt_delete_work
);
2995 /* NOOP state - we're flushing workq's */
2996 if (rport
->port_state
!= FC_PORTSTATE_BLOCKED
) {
2997 spin_unlock_irqrestore(shost
->host_lock
, flags
);
2998 dev_printk(KERN_ERR
, &rport
->dev
,
2999 "blocked FC remote port time out: leaving"
3001 (rport
->scsi_target_id
!= -1) ? " and starget" : "");
3005 if ((fc_host
->tgtid_bind_type
== FC_TGTID_BIND_NONE
) ||
3006 (rport
->scsi_target_id
== -1)) {
3007 list_del(&rport
->peers
);
3008 rport
->port_state
= FC_PORTSTATE_DELETED
;
3009 dev_printk(KERN_ERR
, &rport
->dev
,
3010 "blocked FC remote port time out: removing"
3012 (rport
->scsi_target_id
!= -1) ? " and starget" : "");
3013 fc_queue_work(shost
, &rport
->rport_delete_work
);
3014 spin_unlock_irqrestore(shost
->host_lock
, flags
);
3018 dev_printk(KERN_ERR
, &rport
->dev
,
3019 "blocked FC remote port time out: removing target and "
3020 "saving binding\n");
3022 list_move_tail(&rport
->peers
, &fc_host
->rport_bindings
);
3025 * Note: We do not remove or clear the hostdata area. This allows
3026 * host-specific target data to persist along with the
3027 * scsi_target_id. It's up to the host to manage it's hostdata area.
3031 * Reinitialize port attributes that may change if the port comes back.
3033 rport
->maxframe_size
= -1;
3034 rport
->supported_classes
= FC_COS_UNSPECIFIED
;
3035 rport
->roles
= FC_PORT_ROLE_UNKNOWN
;
3036 rport
->port_state
= FC_PORTSTATE_NOTPRESENT
;
3037 rport
->flags
&= ~FC_RPORT_FAST_FAIL_TIMEDOUT
;
3038 rport
->flags
|= FC_RPORT_DEVLOSS_CALLBK_DONE
;
3041 * Pre-emptively kill I/O rather than waiting for the work queue
3042 * item to teardown the starget. (FCOE libFC folks prefer this
3043 * and to have the rport_port_id still set when it's done).
3045 spin_unlock_irqrestore(shost
->host_lock
, flags
);
3046 fc_terminate_rport_io(rport
);
3048 BUG_ON(rport
->port_state
!= FC_PORTSTATE_NOTPRESENT
);
3050 /* remove the identifiers that aren't used in the consisting binding */
3051 switch (fc_host
->tgtid_bind_type
) {
3052 case FC_TGTID_BIND_BY_WWPN
:
3053 rport
->node_name
= -1;
3054 rport
->port_id
= -1;
3056 case FC_TGTID_BIND_BY_WWNN
:
3057 rport
->port_name
= -1;
3058 rport
->port_id
= -1;
3060 case FC_TGTID_BIND_BY_ID
:
3061 rport
->node_name
= -1;
3062 rport
->port_name
= -1;
3064 case FC_TGTID_BIND_NONE
: /* to keep compiler happy */
3069 * As this only occurs if the remote port (scsi target)
3070 * went away and didn't come back - we'll remove
3071 * all attached scsi devices.
3073 fc_queue_work(shost
, &rport
->stgt_delete_work
);
3076 * Notify the driver that the rport is now dead. The LLDD will
3077 * also guarantee that any communication to the rport is terminated
3079 * Note: we set the CALLBK_DONE flag above to correspond
3081 if (i
->f
->dev_loss_tmo_callbk
)
3082 i
->f
->dev_loss_tmo_callbk(rport
);
3087 * fc_timeout_fail_rport_io - Timeout handler for a fast io failing on a disconnected SCSI target.
3088 * @work: rport to terminate io on.
3090 * Notes: Only requests the failure of the io, not that all are flushed
3091 * prior to returning.
3094 fc_timeout_fail_rport_io(struct work_struct
*work
)
3096 struct fc_rport
*rport
=
3097 container_of(work
, struct fc_rport
, fail_io_work
.work
);
3099 if (rport
->port_state
!= FC_PORTSTATE_BLOCKED
)
3102 rport
->flags
|= FC_RPORT_FAST_FAIL_TIMEDOUT
;
3103 fc_terminate_rport_io(rport
);
3107 * fc_scsi_scan_rport - called to perform a scsi scan on a remote port.
3108 * @work: remote port to be scanned.
3111 fc_scsi_scan_rport(struct work_struct
*work
)
3113 struct fc_rport
*rport
=
3114 container_of(work
, struct fc_rport
, scan_work
);
3115 struct Scsi_Host
*shost
= rport_to_shost(rport
);
3116 struct fc_internal
*i
= to_fc_internal(shost
->transportt
);
3117 unsigned long flags
;
3119 if ((rport
->port_state
== FC_PORTSTATE_ONLINE
) &&
3120 (rport
->roles
& FC_PORT_ROLE_FCP_TARGET
) &&
3121 !(i
->f
->disable_target_scan
)) {
3122 scsi_scan_target(&rport
->dev
, rport
->channel
,
3123 rport
->scsi_target_id
, SCAN_WILD_CARD
, 1);
3126 spin_lock_irqsave(shost
->host_lock
, flags
);
3127 rport
->flags
&= ~FC_RPORT_SCAN_PENDING
;
3128 spin_unlock_irqrestore(shost
->host_lock
, flags
);
3133 * fc_vport_setup - allocates and creates a FC virtual port.
3134 * @shost: scsi host the virtual port is connected to.
3135 * @channel: Channel on shost port connected to.
3136 * @pdev: parent device for vport
3137 * @ids: The world wide names, FC4 port roles, etc for
3139 * @ret_vport: The pointer to the created vport.
3141 * Allocates and creates the vport structure, calls the parent host
3142 * to instantiate the vport, the completes w/ class and sysfs creation.
3145 * This routine assumes no locks are held on entry.
3148 fc_vport_setup(struct Scsi_Host
*shost
, int channel
, struct device
*pdev
,
3149 struct fc_vport_identifiers
*ids
, struct fc_vport
**ret_vport
)
3151 struct fc_host_attrs
*fc_host
= shost_to_fc_host(shost
);
3152 struct fc_internal
*fci
= to_fc_internal(shost
->transportt
);
3153 struct fc_vport
*vport
;
3155 unsigned long flags
;
3161 if ( ! fci
->f
->vport_create
)
3164 size
= (sizeof(struct fc_vport
) + fci
->f
->dd_fcvport_size
);
3165 vport
= kzalloc(size
, GFP_KERNEL
);
3166 if (unlikely(!vport
)) {
3167 printk(KERN_ERR
"%s: allocation failure\n", __func__
);
3171 vport
->vport_state
= FC_VPORT_UNKNOWN
;
3172 vport
->vport_last_state
= FC_VPORT_UNKNOWN
;
3173 vport
->node_name
= ids
->node_name
;
3174 vport
->port_name
= ids
->port_name
;
3175 vport
->roles
= ids
->roles
;
3176 vport
->vport_type
= ids
->vport_type
;
3177 if (fci
->f
->dd_fcvport_size
)
3178 vport
->dd_data
= &vport
[1];
3179 vport
->shost
= shost
;
3180 vport
->channel
= channel
;
3181 vport
->flags
= FC_VPORT_CREATING
;
3182 INIT_WORK(&vport
->vport_delete_work
, fc_vport_sched_delete
);
3184 spin_lock_irqsave(shost
->host_lock
, flags
);
3186 if (fc_host
->npiv_vports_inuse
>= fc_host
->max_npiv_vports
) {
3187 spin_unlock_irqrestore(shost
->host_lock
, flags
);
3191 fc_host
->npiv_vports_inuse
++;
3192 vport
->number
= fc_host
->next_vport_number
++;
3193 list_add_tail(&vport
->peers
, &fc_host
->vports
);
3194 get_device(&shost
->shost_gendev
); /* for fc_host->vport list */
3196 spin_unlock_irqrestore(shost
->host_lock
, flags
);
3199 device_initialize(dev
); /* takes self reference */
3200 dev
->parent
= get_device(pdev
); /* takes parent reference */
3201 dev
->release
= fc_vport_dev_release
;
3202 dev_set_name(dev
, "vport-%d:%d-%d",
3203 shost
->host_no
, channel
, vport
->number
);
3204 transport_setup_device(dev
);
3206 error
= device_add(dev
);
3208 printk(KERN_ERR
"FC Virtual Port device_add failed\n");
3211 transport_add_device(dev
);
3212 transport_configure_device(dev
);
3214 error
= fci
->f
->vport_create(vport
, ids
->disable
);
3216 printk(KERN_ERR
"FC Virtual Port LLDD Create failed\n");
3217 goto delete_vport_all
;
3221 * if the parent isn't the physical adapter's Scsi_Host, ensure
3222 * the Scsi_Host at least contains ia symlink to the vport.
3224 if (pdev
!= &shost
->shost_gendev
) {
3225 error
= sysfs_create_link(&shost
->shost_gendev
.kobj
,
3226 &dev
->kobj
, dev_name(dev
));
3229 "%s: Cannot create vport symlinks for "
3231 __func__
, dev_name(dev
), error
);
3233 spin_lock_irqsave(shost
->host_lock
, flags
);
3234 vport
->flags
&= ~FC_VPORT_CREATING
;
3235 spin_unlock_irqrestore(shost
->host_lock
, flags
);
3237 dev_printk(KERN_NOTICE
, pdev
,
3238 "%s created via shost%d channel %d\n", dev_name(dev
),
3239 shost
->host_no
, channel
);
3246 transport_remove_device(dev
);
3249 transport_destroy_device(dev
);
3250 spin_lock_irqsave(shost
->host_lock
, flags
);
3251 list_del(&vport
->peers
);
3252 put_device(&shost
->shost_gendev
); /* for fc_host->vport list */
3253 fc_host
->npiv_vports_inuse
--;
3254 spin_unlock_irqrestore(shost
->host_lock
, flags
);
3255 put_device(dev
->parent
);
3262 * fc_vport_create - Admin App or LLDD requests creation of a vport
3263 * @shost: scsi host the virtual port is connected to.
3264 * @channel: channel on shost port connected to.
3265 * @ids: The world wide names, FC4 port roles, etc for
3269 * This routine assumes no locks are held on entry.
3272 fc_vport_create(struct Scsi_Host
*shost
, int channel
,
3273 struct fc_vport_identifiers
*ids
)
3276 struct fc_vport
*vport
;
3278 stat
= fc_vport_setup(shost
, channel
, &shost
->shost_gendev
,
3280 return stat
? NULL
: vport
;
3282 EXPORT_SYMBOL(fc_vport_create
);
3285 * fc_vport_terminate - Admin App or LLDD requests termination of a vport
3286 * @vport: fc_vport to be terminated
3288 * Calls the LLDD vport_delete() function, then deallocates and removes
3289 * the vport from the shost and object tree.
3292 * This routine assumes no locks are held on entry.
3295 fc_vport_terminate(struct fc_vport
*vport
)
3297 struct Scsi_Host
*shost
= vport_to_shost(vport
);
3298 struct fc_host_attrs
*fc_host
= shost_to_fc_host(shost
);
3299 struct fc_internal
*i
= to_fc_internal(shost
->transportt
);
3300 struct device
*dev
= &vport
->dev
;
3301 unsigned long flags
;
3304 spin_lock_irqsave(shost
->host_lock
, flags
);
3305 if (vport
->flags
& FC_VPORT_CREATING
) {
3306 spin_unlock_irqrestore(shost
->host_lock
, flags
);
3309 if (vport
->flags
& (FC_VPORT_DEL
)) {
3310 spin_unlock_irqrestore(shost
->host_lock
, flags
);
3313 vport
->flags
|= FC_VPORT_DELETING
;
3314 spin_unlock_irqrestore(shost
->host_lock
, flags
);
3316 if (i
->f
->vport_delete
)
3317 stat
= i
->f
->vport_delete(vport
);
3321 spin_lock_irqsave(shost
->host_lock
, flags
);
3322 vport
->flags
&= ~FC_VPORT_DELETING
;
3324 vport
->flags
|= FC_VPORT_DELETED
;
3325 list_del(&vport
->peers
);
3326 fc_host
->npiv_vports_inuse
--;
3327 put_device(&shost
->shost_gendev
); /* for fc_host->vport list */
3329 spin_unlock_irqrestore(shost
->host_lock
, flags
);
3334 if (dev
->parent
!= &shost
->shost_gendev
)
3335 sysfs_remove_link(&shost
->shost_gendev
.kobj
, dev_name(dev
));
3336 transport_remove_device(dev
);
3338 transport_destroy_device(dev
);
3341 * Removing our self-reference should mean our
3342 * release function gets called, which will drop the remaining
3343 * parent reference and free the data structure.
3345 put_device(dev
); /* for self-reference */
3347 return 0; /* SUCCESS */
3349 EXPORT_SYMBOL(fc_vport_terminate
);
3352 * fc_vport_sched_delete - workq-based delete request for a vport
3353 * @work: vport to be deleted.
3356 fc_vport_sched_delete(struct work_struct
*work
)
3358 struct fc_vport
*vport
=
3359 container_of(work
, struct fc_vport
, vport_delete_work
);
3362 stat
= fc_vport_terminate(vport
);
3364 dev_printk(KERN_ERR
, vport
->dev
.parent
,
3365 "%s: %s could not be deleted created via "
3366 "shost%d channel %d - error %d\n", __func__
,
3367 dev_name(&vport
->dev
), vport
->shost
->host_no
,
3368 vport
->channel
, stat
);
3378 * fc_destroy_bsgjob - routine to teardown/delete a fc bsg job
3379 * @job: fc_bsg_job that is to be torn down
3382 fc_destroy_bsgjob(struct fc_bsg_job
*job
)
3384 unsigned long flags
;
3386 spin_lock_irqsave(&job
->job_lock
, flags
);
3388 spin_unlock_irqrestore(&job
->job_lock
, flags
);
3391 spin_unlock_irqrestore(&job
->job_lock
, flags
);
3393 put_device(job
->dev
); /* release reference for the request */
3395 kfree(job
->request_payload
.sg_list
);
3396 kfree(job
->reply_payload
.sg_list
);
3401 * fc_bsg_jobdone - completion routine for bsg requests that the LLD has
3403 * @job: fc_bsg_job that is complete
3406 fc_bsg_jobdone(struct fc_bsg_job
*job
)
3408 struct request
*req
= job
->req
;
3409 struct request
*rsp
= req
->next_rq
;
3412 err
= job
->req
->errors
= job
->reply
->result
;
3415 /* we're only returning the result field in the reply */
3416 job
->req
->sense_len
= sizeof(uint32_t);
3418 job
->req
->sense_len
= job
->reply_len
;
3420 /* we assume all request payload was transferred, residual == 0 */
3424 WARN_ON(job
->reply
->reply_payload_rcv_len
> rsp
->resid_len
);
3426 /* set reply (bidi) residual */
3427 rsp
->resid_len
-= min(job
->reply
->reply_payload_rcv_len
,
3430 blk_complete_request(req
);
3434 * fc_bsg_softirq_done - softirq done routine for destroying the bsg requests
3435 * @req: BSG request that holds the job to be destroyed
3437 static void fc_bsg_softirq_done(struct request
*rq
)
3439 struct fc_bsg_job
*job
= rq
->special
;
3440 unsigned long flags
;
3442 spin_lock_irqsave(&job
->job_lock
, flags
);
3443 job
->state_flags
|= FC_RQST_STATE_DONE
;
3445 spin_unlock_irqrestore(&job
->job_lock
, flags
);
3447 blk_end_request_all(rq
, rq
->errors
);
3448 fc_destroy_bsgjob(job
);
3452 * fc_bsg_job_timeout - handler for when a bsg request timesout
3453 * @req: request that timed out
3455 static enum blk_eh_timer_return
3456 fc_bsg_job_timeout(struct request
*req
)
3458 struct fc_bsg_job
*job
= (void *) req
->special
;
3459 struct Scsi_Host
*shost
= job
->shost
;
3460 struct fc_internal
*i
= to_fc_internal(shost
->transportt
);
3461 unsigned long flags
;
3462 int err
= 0, done
= 0;
3464 if (job
->rport
&& job
->rport
->port_state
== FC_PORTSTATE_BLOCKED
)
3465 return BLK_EH_RESET_TIMER
;
3467 spin_lock_irqsave(&job
->job_lock
, flags
);
3468 if (job
->state_flags
& FC_RQST_STATE_DONE
)
3472 spin_unlock_irqrestore(&job
->job_lock
, flags
);
3474 if (!done
&& i
->f
->bsg_timeout
) {
3475 /* call LLDD to abort the i/o as it has timed out */
3476 err
= i
->f
->bsg_timeout(job
);
3478 printk(KERN_ERR
"ERROR: FC BSG request timeout - LLD "
3479 "abort failed with status %d\n", err
);
3482 /* the blk_end_sync_io() doesn't check the error */
3484 return BLK_EH_NOT_HANDLED
;
3486 return BLK_EH_HANDLED
;
3490 fc_bsg_map_buffer(struct fc_bsg_buffer
*buf
, struct request
*req
)
3492 size_t sz
= (sizeof(struct scatterlist
) * req
->nr_phys_segments
);
3494 BUG_ON(!req
->nr_phys_segments
);
3496 buf
->sg_list
= kzalloc(sz
, GFP_KERNEL
);
3499 sg_init_table(buf
->sg_list
, req
->nr_phys_segments
);
3500 buf
->sg_cnt
= blk_rq_map_sg(req
->q
, req
, buf
->sg_list
);
3501 buf
->payload_len
= blk_rq_bytes(req
);
3507 * fc_req_to_bsgjob - Allocate/create the fc_bsg_job structure for the
3509 * @shost: SCSI Host corresponding to the bsg object
3510 * @rport: (optional) FC Remote Port corresponding to the bsg object
3511 * @req: BSG request that needs a job structure
3514 fc_req_to_bsgjob(struct Scsi_Host
*shost
, struct fc_rport
*rport
,
3515 struct request
*req
)
3517 struct fc_internal
*i
= to_fc_internal(shost
->transportt
);
3518 struct request
*rsp
= req
->next_rq
;
3519 struct fc_bsg_job
*job
;
3522 BUG_ON(req
->special
);
3524 job
= kzalloc(sizeof(struct fc_bsg_job
) + i
->f
->dd_bsg_size
,
3530 * Note: this is a bit silly.
3531 * The request gets formatted as a SGIO v4 ioctl request, which
3532 * then gets reformatted as a blk request, which then gets
3533 * reformatted as a fc bsg request. And on completion, we have
3534 * to wrap return results such that SGIO v4 thinks it was a scsi
3535 * status. I hope this was all worth it.
3542 if (i
->f
->dd_bsg_size
)
3543 job
->dd_data
= (void *)&job
[1];
3544 spin_lock_init(&job
->job_lock
);
3545 job
->request
= (struct fc_bsg_request
*)req
->cmd
;
3546 job
->request_len
= req
->cmd_len
;
3547 job
->reply
= req
->sense
;
3548 job
->reply_len
= SCSI_SENSE_BUFFERSIZE
; /* Size of sense buffer
3551 ret
= fc_bsg_map_buffer(&job
->request_payload
, req
);
3553 goto failjob_rls_job
;
3555 if (rsp
&& rsp
->bio
) {
3556 ret
= fc_bsg_map_buffer(&job
->reply_payload
, rsp
);
3558 goto failjob_rls_rqst_payload
;
3560 job
->job_done
= fc_bsg_jobdone
;
3562 job
->dev
= &rport
->dev
;
3564 job
->dev
= &shost
->shost_gendev
;
3565 get_device(job
->dev
); /* take a reference for the request */
3572 failjob_rls_rqst_payload
:
3573 kfree(job
->request_payload
.sg_list
);
3580 enum fc_dispatch_result
{
3581 FC_DISPATCH_BREAK
, /* on return, q is locked, break from q loop */
3582 FC_DISPATCH_LOCKED
, /* on return, q is locked, continue on */
3583 FC_DISPATCH_UNLOCKED
, /* on return, q is unlocked, continue on */
3588 * fc_bsg_host_dispatch - process fc host bsg requests and dispatch to LLDD
3589 * @shost: scsi host rport attached to
3590 * @job: bsg job to be processed
3592 static enum fc_dispatch_result
3593 fc_bsg_host_dispatch(struct request_queue
*q
, struct Scsi_Host
*shost
,
3594 struct fc_bsg_job
*job
)
3596 struct fc_internal
*i
= to_fc_internal(shost
->transportt
);
3597 int cmdlen
= sizeof(uint32_t); /* start with length of msgcode */
3600 /* Validate the host command */
3601 switch (job
->request
->msgcode
) {
3602 case FC_BSG_HST_ADD_RPORT
:
3603 cmdlen
+= sizeof(struct fc_bsg_host_add_rport
);
3606 case FC_BSG_HST_DEL_RPORT
:
3607 cmdlen
+= sizeof(struct fc_bsg_host_del_rport
);
3610 case FC_BSG_HST_ELS_NOLOGIN
:
3611 cmdlen
+= sizeof(struct fc_bsg_host_els
);
3612 /* there better be a xmt and rcv payloads */
3613 if ((!job
->request_payload
.payload_len
) ||
3614 (!job
->reply_payload
.payload_len
)) {
3621 cmdlen
+= sizeof(struct fc_bsg_host_ct
);
3622 /* there better be xmt and rcv payloads */
3623 if ((!job
->request_payload
.payload_len
) ||
3624 (!job
->reply_payload
.payload_len
)) {
3630 case FC_BSG_HST_VENDOR
:
3631 cmdlen
+= sizeof(struct fc_bsg_host_vendor
);
3632 if ((shost
->hostt
->vendor_id
== 0L) ||
3633 (job
->request
->rqst_data
.h_vendor
.vendor_id
!=
3634 shost
->hostt
->vendor_id
)) {
3645 /* check if we really have all the request data needed */
3646 if (job
->request_len
< cmdlen
) {
3651 ret
= i
->f
->bsg_request(job
);
3653 return FC_DISPATCH_UNLOCKED
;
3656 /* return the errno failure code as the only status */
3657 BUG_ON(job
->reply_len
< sizeof(uint32_t));
3658 job
->reply
->result
= ret
;
3659 job
->reply_len
= sizeof(uint32_t);
3660 fc_bsg_jobdone(job
);
3661 return FC_DISPATCH_UNLOCKED
;
3666 * fc_bsg_goose_queue - restart rport queue in case it was stopped
3667 * @rport: rport to be restarted
3670 fc_bsg_goose_queue(struct fc_rport
*rport
)
3677 get_device(&rport
->dev
);
3679 spin_lock(rport
->rqst_q
->queue_lock
);
3680 flagset
= test_bit(QUEUE_FLAG_REENTER
, &rport
->rqst_q
->queue_flags
) &&
3681 !test_bit(QUEUE_FLAG_REENTER
, &rport
->rqst_q
->queue_flags
);
3683 queue_flag_set(QUEUE_FLAG_REENTER
, rport
->rqst_q
);
3684 __blk_run_queue(rport
->rqst_q
);
3686 queue_flag_clear(QUEUE_FLAG_REENTER
, rport
->rqst_q
);
3687 spin_unlock(rport
->rqst_q
->queue_lock
);
3689 put_device(&rport
->dev
);
3694 * fc_bsg_rport_dispatch - process rport bsg requests and dispatch to LLDD
3695 * @shost: scsi host rport attached to
3696 * @rport: rport request destined to
3697 * @job: bsg job to be processed
3699 static enum fc_dispatch_result
3700 fc_bsg_rport_dispatch(struct request_queue
*q
, struct Scsi_Host
*shost
,
3701 struct fc_rport
*rport
, struct fc_bsg_job
*job
)
3703 struct fc_internal
*i
= to_fc_internal(shost
->transportt
);
3704 int cmdlen
= sizeof(uint32_t); /* start with length of msgcode */
3707 /* Validate the rport command */
3708 switch (job
->request
->msgcode
) {
3709 case FC_BSG_RPT_ELS
:
3710 cmdlen
+= sizeof(struct fc_bsg_rport_els
);
3714 cmdlen
+= sizeof(struct fc_bsg_rport_ct
);
3716 /* there better be xmt and rcv payloads */
3717 if ((!job
->request_payload
.payload_len
) ||
3718 (!job
->reply_payload
.payload_len
)) {
3720 goto fail_rport_msg
;
3725 goto fail_rport_msg
;
3728 /* check if we really have all the request data needed */
3729 if (job
->request_len
< cmdlen
) {
3731 goto fail_rport_msg
;
3734 ret
= i
->f
->bsg_request(job
);
3736 return FC_DISPATCH_UNLOCKED
;
3739 /* return the errno failure code as the only status */
3740 BUG_ON(job
->reply_len
< sizeof(uint32_t));
3741 job
->reply
->result
= ret
;
3742 job
->reply_len
= sizeof(uint32_t);
3743 fc_bsg_jobdone(job
);
3744 return FC_DISPATCH_UNLOCKED
;
3749 * fc_bsg_request_handler - generic handler for bsg requests
3750 * @q: request queue to manage
3751 * @shost: Scsi_Host related to the bsg object
3752 * @rport: FC remote port related to the bsg object (optional)
3753 * @dev: device structure for bsg object
3756 fc_bsg_request_handler(struct request_queue
*q
, struct Scsi_Host
*shost
,
3757 struct fc_rport
*rport
, struct device
*dev
)
3759 struct request
*req
;
3760 struct fc_bsg_job
*job
;
3761 enum fc_dispatch_result ret
;
3763 if (!get_device(dev
))
3766 while (!blk_queue_plugged(q
)) {
3767 if (rport
&& (rport
->port_state
== FC_PORTSTATE_BLOCKED
))
3770 req
= blk_fetch_request(q
);
3774 if (rport
&& (rport
->port_state
!= FC_PORTSTATE_ONLINE
)) {
3775 req
->errors
= -ENXIO
;
3776 spin_unlock_irq(q
->queue_lock
);
3777 blk_end_request(req
, -ENXIO
, blk_rq_bytes(req
));
3778 spin_lock_irq(q
->queue_lock
);
3782 spin_unlock_irq(q
->queue_lock
);
3784 ret
= fc_req_to_bsgjob(shost
, rport
, req
);
3787 blk_end_request(req
, ret
, blk_rq_bytes(req
));
3788 spin_lock_irq(q
->queue_lock
);
3794 /* check if we have the msgcode value at least */
3795 if (job
->request_len
< sizeof(uint32_t)) {
3796 BUG_ON(job
->reply_len
< sizeof(uint32_t));
3797 job
->reply
->result
= -ENOMSG
;
3798 job
->reply_len
= sizeof(uint32_t);
3799 fc_bsg_jobdone(job
);
3800 spin_lock_irq(q
->queue_lock
);
3804 /* the dispatch routines will unlock the queue_lock */
3806 ret
= fc_bsg_rport_dispatch(q
, shost
, rport
, job
);
3808 ret
= fc_bsg_host_dispatch(q
, shost
, job
);
3810 /* did dispatcher hit state that can't process any more */
3811 if (ret
== FC_DISPATCH_BREAK
)
3814 /* did dispatcher had released the lock */
3815 if (ret
== FC_DISPATCH_UNLOCKED
)
3816 spin_lock_irq(q
->queue_lock
);
3819 spin_unlock_irq(q
->queue_lock
);
3821 spin_lock_irq(q
->queue_lock
);
3826 * fc_bsg_host_handler - handler for bsg requests for a fc host
3827 * @q: fc host request queue
3830 fc_bsg_host_handler(struct request_queue
*q
)
3832 struct Scsi_Host
*shost
= q
->queuedata
;
3834 fc_bsg_request_handler(q
, shost
, NULL
, &shost
->shost_gendev
);
3839 * fc_bsg_rport_handler - handler for bsg requests for a fc rport
3840 * @q: rport request queue
3843 fc_bsg_rport_handler(struct request_queue
*q
)
3845 struct fc_rport
*rport
= q
->queuedata
;
3846 struct Scsi_Host
*shost
= rport_to_shost(rport
);
3848 fc_bsg_request_handler(q
, shost
, rport
, &rport
->dev
);
3853 * fc_bsg_hostadd - Create and add the bsg hooks so we can receive requests
3854 * @shost: shost for fc_host
3855 * @fc_host: fc_host adding the structures to
3858 fc_bsg_hostadd(struct Scsi_Host
*shost
, struct fc_host_attrs
*fc_host
)
3860 struct device
*dev
= &shost
->shost_gendev
;
3861 struct fc_internal
*i
= to_fc_internal(shost
->transportt
);
3862 struct request_queue
*q
;
3866 fc_host
->rqst_q
= NULL
;
3868 if (!i
->f
->bsg_request
)
3871 snprintf(bsg_name
, sizeof(bsg_name
),
3872 "fc_host%d", shost
->host_no
);
3874 q
= __scsi_alloc_queue(shost
, fc_bsg_host_handler
);
3876 printk(KERN_ERR
"fc_host%d: bsg interface failed to "
3877 "initialize - no request queue\n",
3882 q
->queuedata
= shost
;
3883 queue_flag_set_unlocked(QUEUE_FLAG_BIDI
, q
);
3884 blk_queue_softirq_done(q
, fc_bsg_softirq_done
);
3885 blk_queue_rq_timed_out(q
, fc_bsg_job_timeout
);
3886 blk_queue_rq_timeout(q
, FC_DEFAULT_BSG_TIMEOUT
);
3888 err
= bsg_register_queue(q
, dev
, bsg_name
, NULL
);
3890 printk(KERN_ERR
"fc_host%d: bsg interface failed to "
3891 "initialize - register queue\n",
3893 blk_cleanup_queue(q
);
3897 fc_host
->rqst_q
= q
;
3903 * fc_bsg_rportadd - Create and add the bsg hooks so we can receive requests
3904 * @shost: shost that rport is attached to
3905 * @rport: rport that the bsg hooks are being attached to
3908 fc_bsg_rportadd(struct Scsi_Host
*shost
, struct fc_rport
*rport
)
3910 struct device
*dev
= &rport
->dev
;
3911 struct fc_internal
*i
= to_fc_internal(shost
->transportt
);
3912 struct request_queue
*q
;
3915 rport
->rqst_q
= NULL
;
3917 if (!i
->f
->bsg_request
)
3920 q
= __scsi_alloc_queue(shost
, fc_bsg_rport_handler
);
3922 printk(KERN_ERR
"%s: bsg interface failed to "
3923 "initialize - no request queue\n",
3928 q
->queuedata
= rport
;
3929 queue_flag_set_unlocked(QUEUE_FLAG_BIDI
, q
);
3930 blk_queue_softirq_done(q
, fc_bsg_softirq_done
);
3931 blk_queue_rq_timed_out(q
, fc_bsg_job_timeout
);
3932 blk_queue_rq_timeout(q
, BLK_DEFAULT_SG_TIMEOUT
);
3934 err
= bsg_register_queue(q
, dev
, NULL
, NULL
);
3936 printk(KERN_ERR
"%s: bsg interface failed to "
3937 "initialize - register queue\n",
3939 blk_cleanup_queue(q
);
3949 * fc_bsg_remove - Deletes the bsg hooks on fchosts/rports
3950 * @q: the request_queue that is to be torn down.
3953 fc_bsg_remove(struct request_queue
*q
)
3956 bsg_unregister_queue(q
);
3957 blk_cleanup_queue(q
);
3962 /* Original Author: Martin Hicks */
3963 MODULE_AUTHOR("James Smart");
3964 MODULE_DESCRIPTION("FC Transport Attributes");
3965 MODULE_LICENSE("GPL");
3967 module_init(fc_transport_init
);
3968 module_exit(fc_transport_exit
);