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 <linux/slab.h>
31 #include <linux/delay.h>
32 #include <linux/kernel.h>
33 #include <scsi/scsi_device.h>
34 #include <scsi/scsi_host.h>
35 #include <scsi/scsi_transport.h>
36 #include <scsi/scsi_transport_fc.h>
37 #include <scsi/scsi_cmnd.h>
38 #include <net/netlink.h>
39 #include <scsi/scsi_netlink_fc.h>
40 #include <scsi/scsi_bsg_fc.h>
41 #include "scsi_priv.h"
42 #include "scsi_transport_fc_internal.h"
44 static int fc_queue_work(struct Scsi_Host
*, struct work_struct
*);
45 static void fc_vport_sched_delete(struct work_struct
*work
);
46 static int fc_vport_setup(struct Scsi_Host
*shost
, int channel
,
47 struct device
*pdev
, struct fc_vport_identifiers
*ids
,
48 struct fc_vport
**vport
);
49 static int fc_bsg_hostadd(struct Scsi_Host
*, struct fc_host_attrs
*);
50 static int fc_bsg_rportadd(struct Scsi_Host
*, struct fc_rport
*);
51 static void fc_bsg_remove(struct request_queue
*);
52 static void fc_bsg_goose_queue(struct fc_rport
*);
59 * dev_loss_tmo: the default number of seconds that the FC transport
60 * should insulate the loss of a remote port.
61 * The maximum will be capped by the value of SCSI_DEVICE_BLOCK_MAX_TIMEOUT.
63 static unsigned int fc_dev_loss_tmo
= 60; /* seconds */
65 module_param_named(dev_loss_tmo
, fc_dev_loss_tmo
, uint
, S_IRUGO
|S_IWUSR
);
66 MODULE_PARM_DESC(dev_loss_tmo
,
67 "Maximum number of seconds that the FC transport should"
68 " insulate the loss of a remote port. Once this value is"
69 " exceeded, the scsi target is removed. Value should be"
70 " between 1 and SCSI_DEVICE_BLOCK_MAX_TIMEOUT if"
71 " fast_io_fail_tmo is not set.");
74 * Redefine so that we can have same named attributes in the
75 * sdev/starget/host objects.
77 #define FC_DEVICE_ATTR(_prefix,_name,_mode,_show,_store) \
78 struct device_attribute device_attr_##_prefix##_##_name = \
79 __ATTR(_name,_mode,_show,_store)
81 #define fc_enum_name_search(title, table_type, table) \
82 static const char *get_fc_##title##_name(enum table_type table_key) \
87 for (i = 0; i < ARRAY_SIZE(table); i++) { \
88 if (table[i].value == table_key) { \
89 name = table[i].name; \
96 #define fc_enum_name_match(title, table_type, table) \
97 static int get_fc_##title##_match(const char *table_key, \
98 enum table_type *value) \
102 for (i = 0; i < ARRAY_SIZE(table); i++) { \
103 if (strncmp(table_key, table[i].name, \
104 table[i].matchlen) == 0) { \
105 *value = table[i].value; \
106 return 0; /* success */ \
109 return 1; /* failure */ \
113 /* Convert fc_port_type values to ascii string name */
115 enum fc_port_type value
;
117 } fc_port_type_names
[] = {
118 { FC_PORTTYPE_UNKNOWN
, "Unknown" },
119 { FC_PORTTYPE_OTHER
, "Other" },
120 { FC_PORTTYPE_NOTPRESENT
, "Not Present" },
121 { FC_PORTTYPE_NPORT
, "NPort (fabric via point-to-point)" },
122 { FC_PORTTYPE_NLPORT
, "NLPort (fabric via loop)" },
123 { FC_PORTTYPE_LPORT
, "LPort (private loop)" },
124 { FC_PORTTYPE_PTP
, "Point-To-Point (direct nport connection)" },
125 { FC_PORTTYPE_NPIV
, "NPIV VPORT" },
127 fc_enum_name_search(port_type
, fc_port_type
, fc_port_type_names
)
128 #define FC_PORTTYPE_MAX_NAMELEN 50
130 /* Reuse fc_port_type enum function for vport_type */
131 #define get_fc_vport_type_name get_fc_port_type_name
134 /* Convert fc_host_event_code values to ascii string name */
135 static const struct {
136 enum fc_host_event_code value
;
138 } fc_host_event_code_names
[] = {
139 { FCH_EVT_LIP
, "lip" },
140 { FCH_EVT_LINKUP
, "link_up" },
141 { FCH_EVT_LINKDOWN
, "link_down" },
142 { FCH_EVT_LIPRESET
, "lip_reset" },
143 { FCH_EVT_RSCN
, "rscn" },
144 { FCH_EVT_ADAPTER_CHANGE
, "adapter_chg" },
145 { FCH_EVT_PORT_UNKNOWN
, "port_unknown" },
146 { FCH_EVT_PORT_ONLINE
, "port_online" },
147 { FCH_EVT_PORT_OFFLINE
, "port_offline" },
148 { FCH_EVT_PORT_FABRIC
, "port_fabric" },
149 { FCH_EVT_LINK_UNKNOWN
, "link_unknown" },
150 { FCH_EVT_VENDOR_UNIQUE
, "vendor_unique" },
152 fc_enum_name_search(host_event_code
, fc_host_event_code
,
153 fc_host_event_code_names
)
154 #define FC_HOST_EVENT_CODE_MAX_NAMELEN 30
157 /* Convert fc_port_state values to ascii string name */
159 enum fc_port_state value
;
161 } fc_port_state_names
[] = {
162 { FC_PORTSTATE_UNKNOWN
, "Unknown" },
163 { FC_PORTSTATE_NOTPRESENT
, "Not Present" },
164 { FC_PORTSTATE_ONLINE
, "Online" },
165 { FC_PORTSTATE_OFFLINE
, "Offline" },
166 { FC_PORTSTATE_BLOCKED
, "Blocked" },
167 { FC_PORTSTATE_BYPASSED
, "Bypassed" },
168 { FC_PORTSTATE_DIAGNOSTICS
, "Diagnostics" },
169 { FC_PORTSTATE_LINKDOWN
, "Linkdown" },
170 { FC_PORTSTATE_ERROR
, "Error" },
171 { FC_PORTSTATE_LOOPBACK
, "Loopback" },
172 { FC_PORTSTATE_DELETED
, "Deleted" },
174 fc_enum_name_search(port_state
, fc_port_state
, fc_port_state_names
)
175 #define FC_PORTSTATE_MAX_NAMELEN 20
178 /* Convert fc_vport_state values to ascii string name */
180 enum fc_vport_state value
;
182 } fc_vport_state_names
[] = {
183 { FC_VPORT_UNKNOWN
, "Unknown" },
184 { FC_VPORT_ACTIVE
, "Active" },
185 { FC_VPORT_DISABLED
, "Disabled" },
186 { FC_VPORT_LINKDOWN
, "Linkdown" },
187 { FC_VPORT_INITIALIZING
, "Initializing" },
188 { FC_VPORT_NO_FABRIC_SUPP
, "No Fabric Support" },
189 { FC_VPORT_NO_FABRIC_RSCS
, "No Fabric Resources" },
190 { FC_VPORT_FABRIC_LOGOUT
, "Fabric Logout" },
191 { FC_VPORT_FABRIC_REJ_WWN
, "Fabric Rejected WWN" },
192 { FC_VPORT_FAILED
, "VPort Failed" },
194 fc_enum_name_search(vport_state
, fc_vport_state
, fc_vport_state_names
)
195 #define FC_VPORTSTATE_MAX_NAMELEN 24
197 /* Reuse fc_vport_state enum function for vport_last_state */
198 #define get_fc_vport_last_state_name get_fc_vport_state_name
201 /* Convert fc_tgtid_binding_type values to ascii string name */
202 static const struct {
203 enum fc_tgtid_binding_type value
;
206 } fc_tgtid_binding_type_names
[] = {
207 { FC_TGTID_BIND_NONE
, "none", 4 },
208 { FC_TGTID_BIND_BY_WWPN
, "wwpn (World Wide Port Name)", 4 },
209 { FC_TGTID_BIND_BY_WWNN
, "wwnn (World Wide Node Name)", 4 },
210 { FC_TGTID_BIND_BY_ID
, "port_id (FC Address)", 7 },
212 fc_enum_name_search(tgtid_bind_type
, fc_tgtid_binding_type
,
213 fc_tgtid_binding_type_names
)
214 fc_enum_name_match(tgtid_bind_type
, fc_tgtid_binding_type
,
215 fc_tgtid_binding_type_names
)
216 #define FC_BINDTYPE_MAX_NAMELEN 30
219 #define fc_bitfield_name_search(title, table) \
221 get_fc_##title##_names(u32 table_key, char *buf) \
227 for (i = 0; i < ARRAY_SIZE(table); i++) { \
228 if (table[i].value & table_key) { \
229 len += sprintf(buf + len, "%s%s", \
230 prefix, table[i].name); \
234 len += sprintf(buf + len, "\n"); \
239 /* Convert FC_COS bit values to ascii string name */
240 static const struct {
244 { FC_COS_CLASS1
, "Class 1" },
245 { FC_COS_CLASS2
, "Class 2" },
246 { FC_COS_CLASS3
, "Class 3" },
247 { FC_COS_CLASS4
, "Class 4" },
248 { FC_COS_CLASS6
, "Class 6" },
250 fc_bitfield_name_search(cos
, fc_cos_names
)
253 /* Convert FC_PORTSPEED bit values to ascii string name */
254 static const struct {
257 } fc_port_speed_names
[] = {
258 { FC_PORTSPEED_1GBIT
, "1 Gbit" },
259 { FC_PORTSPEED_2GBIT
, "2 Gbit" },
260 { FC_PORTSPEED_4GBIT
, "4 Gbit" },
261 { FC_PORTSPEED_10GBIT
, "10 Gbit" },
262 { FC_PORTSPEED_8GBIT
, "8 Gbit" },
263 { FC_PORTSPEED_16GBIT
, "16 Gbit" },
264 { FC_PORTSPEED_32GBIT
, "32 Gbit" },
265 { FC_PORTSPEED_NOT_NEGOTIATED
, "Not Negotiated" },
267 fc_bitfield_name_search(port_speed
, fc_port_speed_names
)
271 show_fc_fc4s (char *buf
, u8
*fc4_list
)
275 for (i
= 0; i
< FC_FC4_LIST_SIZE
; i
++, fc4_list
++)
276 len
+= sprintf(buf
+ len
, "0x%02x ", *fc4_list
);
277 len
+= sprintf(buf
+ len
, "\n");
282 /* Convert FC_PORT_ROLE bit values to ascii string name */
283 static const struct {
286 } fc_port_role_names
[] = {
287 { FC_PORT_ROLE_FCP_TARGET
, "FCP Target" },
288 { FC_PORT_ROLE_FCP_INITIATOR
, "FCP Initiator" },
289 { FC_PORT_ROLE_IP_PORT
, "IP Port" },
291 fc_bitfield_name_search(port_roles
, fc_port_role_names
)
294 * Define roles that are specific to port_id. Values are relative to ROLE_MASK.
296 #define FC_WELLKNOWN_PORTID_MASK 0xfffff0
297 #define FC_WELLKNOWN_ROLE_MASK 0x00000f
298 #define FC_FPORT_PORTID 0x00000e
299 #define FC_FABCTLR_PORTID 0x00000d
300 #define FC_DIRSRVR_PORTID 0x00000c
301 #define FC_TIMESRVR_PORTID 0x00000b
302 #define FC_MGMTSRVR_PORTID 0x00000a
305 static void fc_timeout_deleted_rport(struct work_struct
*work
);
306 static void fc_timeout_fail_rport_io(struct work_struct
*work
);
307 static void fc_scsi_scan_rport(struct work_struct
*work
);
310 * Attribute counts pre object type...
311 * Increase these values if you add attributes
313 #define FC_STARGET_NUM_ATTRS 3
314 #define FC_RPORT_NUM_ATTRS 10
315 #define FC_VPORT_NUM_ATTRS 9
316 #define FC_HOST_NUM_ATTRS 29
319 struct scsi_transport_template t
;
320 struct fc_function_template
*f
;
323 * For attributes : each object has :
324 * An array of the actual attributes structures
325 * An array of null-terminated pointers to the attribute
326 * structures - used for mid-layer interaction.
328 * The attribute containers for the starget and host are are
329 * part of the midlayer. As the remote port is specific to the
330 * fc transport, we must provide the attribute container.
332 struct device_attribute private_starget_attrs
[
333 FC_STARGET_NUM_ATTRS
];
334 struct device_attribute
*starget_attrs
[FC_STARGET_NUM_ATTRS
+ 1];
336 struct device_attribute private_host_attrs
[FC_HOST_NUM_ATTRS
];
337 struct device_attribute
*host_attrs
[FC_HOST_NUM_ATTRS
+ 1];
339 struct transport_container rport_attr_cont
;
340 struct device_attribute private_rport_attrs
[FC_RPORT_NUM_ATTRS
];
341 struct device_attribute
*rport_attrs
[FC_RPORT_NUM_ATTRS
+ 1];
343 struct transport_container vport_attr_cont
;
344 struct device_attribute private_vport_attrs
[FC_VPORT_NUM_ATTRS
];
345 struct device_attribute
*vport_attrs
[FC_VPORT_NUM_ATTRS
+ 1];
348 #define to_fc_internal(tmpl) container_of(tmpl, struct fc_internal, t)
350 static int fc_target_setup(struct transport_container
*tc
, struct device
*dev
,
353 struct scsi_target
*starget
= to_scsi_target(dev
);
354 struct fc_rport
*rport
= starget_to_rport(starget
);
357 * if parent is remote port, use values from remote port.
358 * Otherwise, this host uses the fc_transport, but not the
359 * remote port interface. As such, initialize to known non-values.
362 fc_starget_node_name(starget
) = rport
->node_name
;
363 fc_starget_port_name(starget
) = rport
->port_name
;
364 fc_starget_port_id(starget
) = rport
->port_id
;
366 fc_starget_node_name(starget
) = -1;
367 fc_starget_port_name(starget
) = -1;
368 fc_starget_port_id(starget
) = -1;
374 static DECLARE_TRANSPORT_CLASS(fc_transport_class
,
380 static int fc_host_setup(struct transport_container
*tc
, struct device
*dev
,
383 struct Scsi_Host
*shost
= dev_to_shost(dev
);
384 struct fc_host_attrs
*fc_host
= shost_to_fc_host(shost
);
387 * Set default values easily detected by the midlayer as
388 * failure cases. The scsi lldd is responsible for initializing
389 * all transport attributes to valid values per host.
391 fc_host
->node_name
= -1;
392 fc_host
->port_name
= -1;
393 fc_host
->permanent_port_name
= -1;
394 fc_host
->supported_classes
= FC_COS_UNSPECIFIED
;
395 memset(fc_host
->supported_fc4s
, 0,
396 sizeof(fc_host
->supported_fc4s
));
397 fc_host
->supported_speeds
= FC_PORTSPEED_UNKNOWN
;
398 fc_host
->maxframe_size
= -1;
399 fc_host
->max_npiv_vports
= 0;
400 memset(fc_host
->serial_number
, 0,
401 sizeof(fc_host
->serial_number
));
402 memset(fc_host
->manufacturer
, 0,
403 sizeof(fc_host
->manufacturer
));
404 memset(fc_host
->model
, 0,
405 sizeof(fc_host
->model
));
406 memset(fc_host
->model_description
, 0,
407 sizeof(fc_host
->model_description
));
408 memset(fc_host
->hardware_version
, 0,
409 sizeof(fc_host
->hardware_version
));
410 memset(fc_host
->driver_version
, 0,
411 sizeof(fc_host
->driver_version
));
412 memset(fc_host
->firmware_version
, 0,
413 sizeof(fc_host
->firmware_version
));
414 memset(fc_host
->optionrom_version
, 0,
415 sizeof(fc_host
->optionrom_version
));
417 fc_host
->port_id
= -1;
418 fc_host
->port_type
= FC_PORTTYPE_UNKNOWN
;
419 fc_host
->port_state
= FC_PORTSTATE_UNKNOWN
;
420 memset(fc_host
->active_fc4s
, 0,
421 sizeof(fc_host
->active_fc4s
));
422 fc_host
->speed
= FC_PORTSPEED_UNKNOWN
;
423 fc_host
->fabric_name
= -1;
424 memset(fc_host
->symbolic_name
, 0, sizeof(fc_host
->symbolic_name
));
425 memset(fc_host
->system_hostname
, 0, sizeof(fc_host
->system_hostname
));
427 fc_host
->tgtid_bind_type
= FC_TGTID_BIND_BY_WWPN
;
429 INIT_LIST_HEAD(&fc_host
->rports
);
430 INIT_LIST_HEAD(&fc_host
->rport_bindings
);
431 INIT_LIST_HEAD(&fc_host
->vports
);
432 fc_host
->next_rport_number
= 0;
433 fc_host
->next_target_id
= 0;
434 fc_host
->next_vport_number
= 0;
435 fc_host
->npiv_vports_inuse
= 0;
437 snprintf(fc_host
->work_q_name
, sizeof(fc_host
->work_q_name
),
438 "fc_wq_%d", shost
->host_no
);
439 fc_host
->work_q
= alloc_workqueue("%s", 0, 0, fc_host
->work_q_name
);
440 if (!fc_host
->work_q
)
443 fc_host
->dev_loss_tmo
= fc_dev_loss_tmo
;
444 snprintf(fc_host
->devloss_work_q_name
,
445 sizeof(fc_host
->devloss_work_q_name
),
446 "fc_dl_%d", shost
->host_no
);
447 fc_host
->devloss_work_q
= alloc_workqueue("%s", 0, 0,
448 fc_host
->devloss_work_q_name
);
449 if (!fc_host
->devloss_work_q
) {
450 destroy_workqueue(fc_host
->work_q
);
451 fc_host
->work_q
= NULL
;
455 fc_bsg_hostadd(shost
, fc_host
);
456 /* ignore any bsg add error - we just can't do sgio */
461 static int fc_host_remove(struct transport_container
*tc
, struct device
*dev
,
464 struct Scsi_Host
*shost
= dev_to_shost(dev
);
465 struct fc_host_attrs
*fc_host
= shost_to_fc_host(shost
);
467 fc_bsg_remove(fc_host
->rqst_q
);
471 static DECLARE_TRANSPORT_CLASS(fc_host_class
,
478 * Setup and Remove actions for remote ports are handled
479 * in the service functions below.
481 static DECLARE_TRANSPORT_CLASS(fc_rport_class
,
488 * Setup and Remove actions for virtual ports are handled
489 * in the service functions below.
491 static DECLARE_TRANSPORT_CLASS(fc_vport_class
,
498 * Netlink Infrastructure
501 static atomic_t fc_event_seq
;
504 * fc_get_event_number - Obtain the next sequential FC event number
507 * We could have inlined this, but it would have required fc_event_seq to
508 * be exposed. For now, live with the subroutine call.
509 * Atomic used to avoid lock/unlock...
512 fc_get_event_number(void)
514 return atomic_add_return(1, &fc_event_seq
);
516 EXPORT_SYMBOL(fc_get_event_number
);
520 * fc_host_post_event - called to post an even on an fc_host.
521 * @shost: host the event occurred on
522 * @event_number: fc event number obtained from get_fc_event_number()
523 * @event_code: fc_host event being posted
524 * @event_data: 32bits of data for the event being posted
527 * This routine assumes no locks are held on entry.
530 fc_host_post_event(struct Scsi_Host
*shost
, u32 event_number
,
531 enum fc_host_event_code event_code
, u32 event_data
)
534 struct nlmsghdr
*nlh
;
535 struct fc_nl_event
*event
;
545 len
= FC_NL_MSGALIGN(sizeof(*event
));
547 skb
= nlmsg_new(len
, GFP_KERNEL
);
553 nlh
= nlmsg_put(skb
, 0, 0, SCSI_TRANSPORT_MSG
, len
, 0);
558 event
= nlmsg_data(nlh
);
560 INIT_SCSI_NL_HDR(&event
->snlh
, SCSI_NL_TRANSPORT_FC
,
561 FC_NL_ASYNC_EVENT
, len
);
562 event
->seconds
= get_seconds();
563 event
->vendor_id
= 0;
564 event
->host_no
= shost
->host_no
;
565 event
->event_datalen
= sizeof(u32
); /* bytes */
566 event
->event_num
= event_number
;
567 event
->event_code
= event_code
;
568 event
->event_data
= event_data
;
570 nlmsg_multicast(scsi_nl_sock
, skb
, 0, SCSI_NL_GRP_FC_EVENTS
,
577 name
= get_fc_host_event_code_name(event_code
);
579 "%s: Dropped Event : host %d %s data 0x%08x - err %d\n",
580 __func__
, shost
->host_no
,
581 (name
) ? name
: "<unknown>", event_data
, err
);
584 EXPORT_SYMBOL(fc_host_post_event
);
588 * fc_host_post_vendor_event - called to post a vendor unique event on an fc_host
589 * @shost: host the event occurred on
590 * @event_number: fc event number obtained from get_fc_event_number()
591 * @data_len: amount, in bytes, of vendor unique data
592 * @data_buf: pointer to vendor unique data
593 * @vendor_id: Vendor id
596 * This routine assumes no locks are held on entry.
599 fc_host_post_vendor_event(struct Scsi_Host
*shost
, u32 event_number
,
600 u32 data_len
, char * data_buf
, u64 vendor_id
)
603 struct nlmsghdr
*nlh
;
604 struct fc_nl_event
*event
;
610 goto send_vendor_fail
;
613 len
= FC_NL_MSGALIGN(sizeof(*event
) + data_len
);
615 skb
= nlmsg_new(len
, GFP_KERNEL
);
618 goto send_vendor_fail
;
621 nlh
= nlmsg_put(skb
, 0, 0, SCSI_TRANSPORT_MSG
, len
, 0);
624 goto send_vendor_fail_skb
;
626 event
= nlmsg_data(nlh
);
628 INIT_SCSI_NL_HDR(&event
->snlh
, SCSI_NL_TRANSPORT_FC
,
629 FC_NL_ASYNC_EVENT
, len
);
630 event
->seconds
= get_seconds();
631 event
->vendor_id
= vendor_id
;
632 event
->host_no
= shost
->host_no
;
633 event
->event_datalen
= data_len
; /* bytes */
634 event
->event_num
= event_number
;
635 event
->event_code
= FCH_EVT_VENDOR_UNIQUE
;
636 memcpy(&event
->event_data
, data_buf
, data_len
);
638 nlmsg_multicast(scsi_nl_sock
, skb
, 0, SCSI_NL_GRP_FC_EVENTS
,
642 send_vendor_fail_skb
:
646 "%s: Dropped Event : host %d vendor_unique - err %d\n",
647 __func__
, shost
->host_no
, err
);
650 EXPORT_SYMBOL(fc_host_post_vendor_event
);
654 static __init
int fc_transport_init(void)
658 atomic_set(&fc_event_seq
, 0);
660 error
= transport_class_register(&fc_host_class
);
663 error
= transport_class_register(&fc_vport_class
);
665 goto unreg_host_class
;
666 error
= transport_class_register(&fc_rport_class
);
668 goto unreg_vport_class
;
669 error
= transport_class_register(&fc_transport_class
);
671 goto unreg_rport_class
;
675 transport_class_unregister(&fc_rport_class
);
677 transport_class_unregister(&fc_vport_class
);
679 transport_class_unregister(&fc_host_class
);
683 static void __exit
fc_transport_exit(void)
685 transport_class_unregister(&fc_transport_class
);
686 transport_class_unregister(&fc_rport_class
);
687 transport_class_unregister(&fc_host_class
);
688 transport_class_unregister(&fc_vport_class
);
692 * FC Remote Port Attribute Management
695 #define fc_rport_show_function(field, format_string, sz, cast) \
697 show_fc_rport_##field (struct device *dev, \
698 struct device_attribute *attr, char *buf) \
700 struct fc_rport *rport = transport_class_to_rport(dev); \
701 struct Scsi_Host *shost = rport_to_shost(rport); \
702 struct fc_internal *i = to_fc_internal(shost->transportt); \
703 if ((i->f->get_rport_##field) && \
704 !((rport->port_state == FC_PORTSTATE_BLOCKED) || \
705 (rport->port_state == FC_PORTSTATE_DELETED) || \
706 (rport->port_state == FC_PORTSTATE_NOTPRESENT))) \
707 i->f->get_rport_##field(rport); \
708 return snprintf(buf, sz, format_string, cast rport->field); \
711 #define fc_rport_store_function(field) \
713 store_fc_rport_##field(struct device *dev, \
714 struct device_attribute *attr, \
715 const char *buf, size_t count) \
718 struct fc_rport *rport = transport_class_to_rport(dev); \
719 struct Scsi_Host *shost = rport_to_shost(rport); \
720 struct fc_internal *i = to_fc_internal(shost->transportt); \
722 if ((rport->port_state == FC_PORTSTATE_BLOCKED) || \
723 (rport->port_state == FC_PORTSTATE_DELETED) || \
724 (rport->port_state == FC_PORTSTATE_NOTPRESENT)) \
726 val = simple_strtoul(buf, &cp, 0); \
727 if (*cp && (*cp != '\n')) \
729 i->f->set_rport_##field(rport, val); \
733 #define fc_rport_rd_attr(field, format_string, sz) \
734 fc_rport_show_function(field, format_string, sz, ) \
735 static FC_DEVICE_ATTR(rport, field, S_IRUGO, \
736 show_fc_rport_##field, NULL)
738 #define fc_rport_rd_attr_cast(field, format_string, sz, cast) \
739 fc_rport_show_function(field, format_string, sz, (cast)) \
740 static FC_DEVICE_ATTR(rport, field, S_IRUGO, \
741 show_fc_rport_##field, NULL)
743 #define fc_rport_rw_attr(field, format_string, sz) \
744 fc_rport_show_function(field, format_string, sz, ) \
745 fc_rport_store_function(field) \
746 static FC_DEVICE_ATTR(rport, field, S_IRUGO | S_IWUSR, \
747 show_fc_rport_##field, \
748 store_fc_rport_##field)
751 #define fc_private_rport_show_function(field, format_string, sz, cast) \
753 show_fc_rport_##field (struct device *dev, \
754 struct device_attribute *attr, char *buf) \
756 struct fc_rport *rport = transport_class_to_rport(dev); \
757 return snprintf(buf, sz, format_string, cast rport->field); \
760 #define fc_private_rport_rd_attr(field, format_string, sz) \
761 fc_private_rport_show_function(field, format_string, sz, ) \
762 static FC_DEVICE_ATTR(rport, field, S_IRUGO, \
763 show_fc_rport_##field, NULL)
765 #define fc_private_rport_rd_attr_cast(field, format_string, sz, cast) \
766 fc_private_rport_show_function(field, format_string, sz, (cast)) \
767 static FC_DEVICE_ATTR(rport, field, S_IRUGO, \
768 show_fc_rport_##field, NULL)
771 #define fc_private_rport_rd_enum_attr(title, maxlen) \
773 show_fc_rport_##title (struct device *dev, \
774 struct device_attribute *attr, char *buf) \
776 struct fc_rport *rport = transport_class_to_rport(dev); \
778 name = get_fc_##title##_name(rport->title); \
781 return snprintf(buf, maxlen, "%s\n", name); \
783 static FC_DEVICE_ATTR(rport, title, S_IRUGO, \
784 show_fc_rport_##title, NULL)
787 #define SETUP_RPORT_ATTRIBUTE_RD(field) \
788 i->private_rport_attrs[count] = device_attr_rport_##field; \
789 i->private_rport_attrs[count].attr.mode = S_IRUGO; \
790 i->private_rport_attrs[count].store = NULL; \
791 i->rport_attrs[count] = &i->private_rport_attrs[count]; \
792 if (i->f->show_rport_##field) \
795 #define SETUP_PRIVATE_RPORT_ATTRIBUTE_RD(field) \
796 i->private_rport_attrs[count] = device_attr_rport_##field; \
797 i->private_rport_attrs[count].attr.mode = S_IRUGO; \
798 i->private_rport_attrs[count].store = NULL; \
799 i->rport_attrs[count] = &i->private_rport_attrs[count]; \
802 #define SETUP_RPORT_ATTRIBUTE_RW(field) \
803 i->private_rport_attrs[count] = device_attr_rport_##field; \
804 if (!i->f->set_rport_##field) { \
805 i->private_rport_attrs[count].attr.mode = S_IRUGO; \
806 i->private_rport_attrs[count].store = NULL; \
808 i->rport_attrs[count] = &i->private_rport_attrs[count]; \
809 if (i->f->show_rport_##field) \
812 #define SETUP_PRIVATE_RPORT_ATTRIBUTE_RW(field) \
814 i->private_rport_attrs[count] = device_attr_rport_##field; \
815 i->rport_attrs[count] = &i->private_rport_attrs[count]; \
820 /* The FC Transport Remote Port Attributes: */
822 /* Fixed Remote Port Attributes */
824 fc_private_rport_rd_attr(maxframe_size
, "%u bytes\n", 20);
827 show_fc_rport_supported_classes (struct device
*dev
,
828 struct device_attribute
*attr
, char *buf
)
830 struct fc_rport
*rport
= transport_class_to_rport(dev
);
831 if (rport
->supported_classes
== FC_COS_UNSPECIFIED
)
832 return snprintf(buf
, 20, "unspecified\n");
833 return get_fc_cos_names(rport
->supported_classes
, buf
);
835 static FC_DEVICE_ATTR(rport
, supported_classes
, S_IRUGO
,
836 show_fc_rport_supported_classes
, NULL
);
838 /* Dynamic Remote Port Attributes */
841 * dev_loss_tmo attribute
843 static int fc_str_to_dev_loss(const char *buf
, unsigned long *val
)
847 *val
= simple_strtoul(buf
, &cp
, 0);
848 if ((*cp
&& (*cp
!= '\n')) || (*val
< 0))
851 * Check for overflow; dev_loss_tmo is u32
859 static int fc_rport_set_dev_loss_tmo(struct fc_rport
*rport
,
862 struct Scsi_Host
*shost
= rport_to_shost(rport
);
863 struct fc_internal
*i
= to_fc_internal(shost
->transportt
);
865 if ((rport
->port_state
== FC_PORTSTATE_BLOCKED
) ||
866 (rport
->port_state
== FC_PORTSTATE_DELETED
) ||
867 (rport
->port_state
== FC_PORTSTATE_NOTPRESENT
))
870 * Check for overflow; dev_loss_tmo is u32
876 * If fast_io_fail is off we have to cap
877 * dev_loss_tmo at SCSI_DEVICE_BLOCK_MAX_TIMEOUT
879 if (rport
->fast_io_fail_tmo
== -1 &&
880 val
> SCSI_DEVICE_BLOCK_MAX_TIMEOUT
)
883 i
->f
->set_rport_dev_loss_tmo(rport
, val
);
887 fc_rport_show_function(dev_loss_tmo
, "%d\n", 20, )
889 store_fc_rport_dev_loss_tmo(struct device
*dev
, struct device_attribute
*attr
,
890 const char *buf
, size_t count
)
892 struct fc_rport
*rport
= transport_class_to_rport(dev
);
896 rc
= fc_str_to_dev_loss(buf
, &val
);
900 rc
= fc_rport_set_dev_loss_tmo(rport
, val
);
905 static FC_DEVICE_ATTR(rport
, dev_loss_tmo
, S_IRUGO
| S_IWUSR
,
906 show_fc_rport_dev_loss_tmo
, store_fc_rport_dev_loss_tmo
);
909 /* Private Remote Port Attributes */
911 fc_private_rport_rd_attr_cast(node_name
, "0x%llx\n", 20, unsigned long long);
912 fc_private_rport_rd_attr_cast(port_name
, "0x%llx\n", 20, unsigned long long);
913 fc_private_rport_rd_attr(port_id
, "0x%06x\n", 20);
916 show_fc_rport_roles (struct device
*dev
, struct device_attribute
*attr
,
919 struct fc_rport
*rport
= transport_class_to_rport(dev
);
921 /* identify any roles that are port_id specific */
922 if ((rport
->port_id
!= -1) &&
923 (rport
->port_id
& FC_WELLKNOWN_PORTID_MASK
) ==
924 FC_WELLKNOWN_PORTID_MASK
) {
925 switch (rport
->port_id
& FC_WELLKNOWN_ROLE_MASK
) {
926 case FC_FPORT_PORTID
:
927 return snprintf(buf
, 30, "Fabric Port\n");
928 case FC_FABCTLR_PORTID
:
929 return snprintf(buf
, 30, "Fabric Controller\n");
930 case FC_DIRSRVR_PORTID
:
931 return snprintf(buf
, 30, "Directory Server\n");
932 case FC_TIMESRVR_PORTID
:
933 return snprintf(buf
, 30, "Time Server\n");
934 case FC_MGMTSRVR_PORTID
:
935 return snprintf(buf
, 30, "Management Server\n");
937 return snprintf(buf
, 30, "Unknown Fabric Entity\n");
940 if (rport
->roles
== FC_PORT_ROLE_UNKNOWN
)
941 return snprintf(buf
, 20, "unknown\n");
942 return get_fc_port_roles_names(rport
->roles
, buf
);
945 static FC_DEVICE_ATTR(rport
, roles
, S_IRUGO
,
946 show_fc_rport_roles
, NULL
);
948 fc_private_rport_rd_enum_attr(port_state
, FC_PORTSTATE_MAX_NAMELEN
);
949 fc_private_rport_rd_attr(scsi_target_id
, "%d\n", 20);
952 * fast_io_fail_tmo attribute
955 show_fc_rport_fast_io_fail_tmo (struct device
*dev
,
956 struct device_attribute
*attr
, char *buf
)
958 struct fc_rport
*rport
= transport_class_to_rport(dev
);
960 if (rport
->fast_io_fail_tmo
== -1)
961 return snprintf(buf
, 5, "off\n");
962 return snprintf(buf
, 20, "%d\n", rport
->fast_io_fail_tmo
);
966 store_fc_rport_fast_io_fail_tmo(struct device
*dev
,
967 struct device_attribute
*attr
, const char *buf
,
972 struct fc_rport
*rport
= transport_class_to_rport(dev
);
974 if ((rport
->port_state
== FC_PORTSTATE_BLOCKED
) ||
975 (rport
->port_state
== FC_PORTSTATE_DELETED
) ||
976 (rport
->port_state
== FC_PORTSTATE_NOTPRESENT
))
978 if (strncmp(buf
, "off", 3) == 0)
979 rport
->fast_io_fail_tmo
= -1;
981 val
= simple_strtoul(buf
, &cp
, 0);
982 if ((*cp
&& (*cp
!= '\n')) || (val
< 0))
985 * Cap fast_io_fail by dev_loss_tmo or
986 * SCSI_DEVICE_BLOCK_MAX_TIMEOUT.
988 if ((val
>= rport
->dev_loss_tmo
) ||
989 (val
> SCSI_DEVICE_BLOCK_MAX_TIMEOUT
))
992 rport
->fast_io_fail_tmo
= val
;
996 static FC_DEVICE_ATTR(rport
, fast_io_fail_tmo
, S_IRUGO
| S_IWUSR
,
997 show_fc_rport_fast_io_fail_tmo
, store_fc_rport_fast_io_fail_tmo
);
1001 * FC SCSI Target Attribute Management
1005 * Note: in the target show function we recognize when the remote
1006 * port is in the hierarchy and do not allow the driver to get
1007 * involved in sysfs functions. The driver only gets involved if
1008 * it's the "old" style that doesn't use rports.
1010 #define fc_starget_show_function(field, format_string, sz, cast) \
1012 show_fc_starget_##field (struct device *dev, \
1013 struct device_attribute *attr, char *buf) \
1015 struct scsi_target *starget = transport_class_to_starget(dev); \
1016 struct Scsi_Host *shost = dev_to_shost(starget->dev.parent); \
1017 struct fc_internal *i = to_fc_internal(shost->transportt); \
1018 struct fc_rport *rport = starget_to_rport(starget); \
1020 fc_starget_##field(starget) = rport->field; \
1021 else if (i->f->get_starget_##field) \
1022 i->f->get_starget_##field(starget); \
1023 return snprintf(buf, sz, format_string, \
1024 cast fc_starget_##field(starget)); \
1027 #define fc_starget_rd_attr(field, format_string, sz) \
1028 fc_starget_show_function(field, format_string, sz, ) \
1029 static FC_DEVICE_ATTR(starget, field, S_IRUGO, \
1030 show_fc_starget_##field, NULL)
1032 #define fc_starget_rd_attr_cast(field, format_string, sz, cast) \
1033 fc_starget_show_function(field, format_string, sz, (cast)) \
1034 static FC_DEVICE_ATTR(starget, field, S_IRUGO, \
1035 show_fc_starget_##field, NULL)
1037 #define SETUP_STARGET_ATTRIBUTE_RD(field) \
1038 i->private_starget_attrs[count] = device_attr_starget_##field; \
1039 i->private_starget_attrs[count].attr.mode = S_IRUGO; \
1040 i->private_starget_attrs[count].store = NULL; \
1041 i->starget_attrs[count] = &i->private_starget_attrs[count]; \
1042 if (i->f->show_starget_##field) \
1045 #define SETUP_STARGET_ATTRIBUTE_RW(field) \
1046 i->private_starget_attrs[count] = device_attr_starget_##field; \
1047 if (!i->f->set_starget_##field) { \
1048 i->private_starget_attrs[count].attr.mode = S_IRUGO; \
1049 i->private_starget_attrs[count].store = NULL; \
1051 i->starget_attrs[count] = &i->private_starget_attrs[count]; \
1052 if (i->f->show_starget_##field) \
1055 /* The FC Transport SCSI Target Attributes: */
1056 fc_starget_rd_attr_cast(node_name
, "0x%llx\n", 20, unsigned long long);
1057 fc_starget_rd_attr_cast(port_name
, "0x%llx\n", 20, unsigned long long);
1058 fc_starget_rd_attr(port_id
, "0x%06x\n", 20);
1062 * FC Virtual Port Attribute Management
1065 #define fc_vport_show_function(field, format_string, sz, cast) \
1067 show_fc_vport_##field (struct device *dev, \
1068 struct device_attribute *attr, char *buf) \
1070 struct fc_vport *vport = transport_class_to_vport(dev); \
1071 struct Scsi_Host *shost = vport_to_shost(vport); \
1072 struct fc_internal *i = to_fc_internal(shost->transportt); \
1073 if ((i->f->get_vport_##field) && \
1074 !(vport->flags & (FC_VPORT_DEL | FC_VPORT_CREATING))) \
1075 i->f->get_vport_##field(vport); \
1076 return snprintf(buf, sz, format_string, cast vport->field); \
1079 #define fc_vport_store_function(field) \
1081 store_fc_vport_##field(struct device *dev, \
1082 struct device_attribute *attr, \
1083 const char *buf, size_t count) \
1086 struct fc_vport *vport = transport_class_to_vport(dev); \
1087 struct Scsi_Host *shost = vport_to_shost(vport); \
1088 struct fc_internal *i = to_fc_internal(shost->transportt); \
1090 if (vport->flags & (FC_VPORT_DEL | FC_VPORT_CREATING)) \
1092 val = simple_strtoul(buf, &cp, 0); \
1093 if (*cp && (*cp != '\n')) \
1095 i->f->set_vport_##field(vport, val); \
1099 #define fc_vport_store_str_function(field, slen) \
1101 store_fc_vport_##field(struct device *dev, \
1102 struct device_attribute *attr, \
1103 const char *buf, size_t count) \
1105 struct fc_vport *vport = transport_class_to_vport(dev); \
1106 struct Scsi_Host *shost = vport_to_shost(vport); \
1107 struct fc_internal *i = to_fc_internal(shost->transportt); \
1108 unsigned int cnt=count; \
1110 /* count may include a LF at end of string */ \
1111 if (buf[cnt-1] == '\n') \
1113 if (cnt > ((slen) - 1)) \
1115 memcpy(vport->field, buf, cnt); \
1116 i->f->set_vport_##field(vport); \
1120 #define fc_vport_rd_attr(field, format_string, sz) \
1121 fc_vport_show_function(field, format_string, sz, ) \
1122 static FC_DEVICE_ATTR(vport, field, S_IRUGO, \
1123 show_fc_vport_##field, NULL)
1125 #define fc_vport_rd_attr_cast(field, format_string, sz, cast) \
1126 fc_vport_show_function(field, format_string, sz, (cast)) \
1127 static FC_DEVICE_ATTR(vport, field, S_IRUGO, \
1128 show_fc_vport_##field, NULL)
1130 #define fc_vport_rw_attr(field, format_string, sz) \
1131 fc_vport_show_function(field, format_string, sz, ) \
1132 fc_vport_store_function(field) \
1133 static FC_DEVICE_ATTR(vport, field, S_IRUGO | S_IWUSR, \
1134 show_fc_vport_##field, \
1135 store_fc_vport_##field)
1137 #define fc_private_vport_show_function(field, format_string, sz, cast) \
1139 show_fc_vport_##field (struct device *dev, \
1140 struct device_attribute *attr, char *buf) \
1142 struct fc_vport *vport = transport_class_to_vport(dev); \
1143 return snprintf(buf, sz, format_string, cast vport->field); \
1146 #define fc_private_vport_store_u32_function(field) \
1148 store_fc_vport_##field(struct device *dev, \
1149 struct device_attribute *attr, \
1150 const char *buf, size_t count) \
1153 struct fc_vport *vport = transport_class_to_vport(dev); \
1155 if (vport->flags & (FC_VPORT_DEL | FC_VPORT_CREATING)) \
1157 val = simple_strtoul(buf, &cp, 0); \
1158 if (*cp && (*cp != '\n')) \
1160 vport->field = val; \
1165 #define fc_private_vport_rd_attr(field, format_string, sz) \
1166 fc_private_vport_show_function(field, format_string, sz, ) \
1167 static FC_DEVICE_ATTR(vport, field, S_IRUGO, \
1168 show_fc_vport_##field, NULL)
1170 #define fc_private_vport_rd_attr_cast(field, format_string, sz, cast) \
1171 fc_private_vport_show_function(field, format_string, sz, (cast)) \
1172 static FC_DEVICE_ATTR(vport, field, S_IRUGO, \
1173 show_fc_vport_##field, NULL)
1175 #define fc_private_vport_rw_u32_attr(field, format_string, sz) \
1176 fc_private_vport_show_function(field, format_string, sz, ) \
1177 fc_private_vport_store_u32_function(field) \
1178 static FC_DEVICE_ATTR(vport, field, S_IRUGO | S_IWUSR, \
1179 show_fc_vport_##field, \
1180 store_fc_vport_##field)
1183 #define fc_private_vport_rd_enum_attr(title, maxlen) \
1185 show_fc_vport_##title (struct device *dev, \
1186 struct device_attribute *attr, \
1189 struct fc_vport *vport = transport_class_to_vport(dev); \
1191 name = get_fc_##title##_name(vport->title); \
1194 return snprintf(buf, maxlen, "%s\n", name); \
1196 static FC_DEVICE_ATTR(vport, title, S_IRUGO, \
1197 show_fc_vport_##title, NULL)
1200 #define SETUP_VPORT_ATTRIBUTE_RD(field) \
1201 i->private_vport_attrs[count] = device_attr_vport_##field; \
1202 i->private_vport_attrs[count].attr.mode = S_IRUGO; \
1203 i->private_vport_attrs[count].store = NULL; \
1204 i->vport_attrs[count] = &i->private_vport_attrs[count]; \
1205 if (i->f->get_##field) \
1207 /* NOTE: Above MACRO differs: checks function not show bit */
1209 #define SETUP_PRIVATE_VPORT_ATTRIBUTE_RD(field) \
1210 i->private_vport_attrs[count] = device_attr_vport_##field; \
1211 i->private_vport_attrs[count].attr.mode = S_IRUGO; \
1212 i->private_vport_attrs[count].store = NULL; \
1213 i->vport_attrs[count] = &i->private_vport_attrs[count]; \
1216 #define SETUP_VPORT_ATTRIBUTE_WR(field) \
1217 i->private_vport_attrs[count] = device_attr_vport_##field; \
1218 i->vport_attrs[count] = &i->private_vport_attrs[count]; \
1221 /* NOTE: Above MACRO differs: checks function */
1223 #define SETUP_VPORT_ATTRIBUTE_RW(field) \
1224 i->private_vport_attrs[count] = device_attr_vport_##field; \
1225 if (!i->f->set_vport_##field) { \
1226 i->private_vport_attrs[count].attr.mode = S_IRUGO; \
1227 i->private_vport_attrs[count].store = NULL; \
1229 i->vport_attrs[count] = &i->private_vport_attrs[count]; \
1231 /* NOTE: Above MACRO differs: does not check show bit */
1233 #define SETUP_PRIVATE_VPORT_ATTRIBUTE_RW(field) \
1235 i->private_vport_attrs[count] = device_attr_vport_##field; \
1236 i->vport_attrs[count] = &i->private_vport_attrs[count]; \
1241 /* The FC Transport Virtual Port Attributes: */
1243 /* Fixed Virtual Port Attributes */
1245 /* Dynamic Virtual Port Attributes */
1247 /* Private Virtual Port Attributes */
1249 fc_private_vport_rd_enum_attr(vport_state
, FC_VPORTSTATE_MAX_NAMELEN
);
1250 fc_private_vport_rd_enum_attr(vport_last_state
, FC_VPORTSTATE_MAX_NAMELEN
);
1251 fc_private_vport_rd_attr_cast(node_name
, "0x%llx\n", 20, unsigned long long);
1252 fc_private_vport_rd_attr_cast(port_name
, "0x%llx\n", 20, unsigned long long);
1255 show_fc_vport_roles (struct device
*dev
, struct device_attribute
*attr
,
1258 struct fc_vport
*vport
= transport_class_to_vport(dev
);
1260 if (vport
->roles
== FC_PORT_ROLE_UNKNOWN
)
1261 return snprintf(buf
, 20, "unknown\n");
1262 return get_fc_port_roles_names(vport
->roles
, buf
);
1264 static FC_DEVICE_ATTR(vport
, roles
, S_IRUGO
, show_fc_vport_roles
, NULL
);
1266 fc_private_vport_rd_enum_attr(vport_type
, FC_PORTTYPE_MAX_NAMELEN
);
1268 fc_private_vport_show_function(symbolic_name
, "%s\n",
1269 FC_VPORT_SYMBOLIC_NAMELEN
+ 1, )
1270 fc_vport_store_str_function(symbolic_name
, FC_VPORT_SYMBOLIC_NAMELEN
)
1271 static FC_DEVICE_ATTR(vport
, symbolic_name
, S_IRUGO
| S_IWUSR
,
1272 show_fc_vport_symbolic_name
, store_fc_vport_symbolic_name
);
1275 store_fc_vport_delete(struct device
*dev
, struct device_attribute
*attr
,
1276 const char *buf
, size_t count
)
1278 struct fc_vport
*vport
= transport_class_to_vport(dev
);
1279 struct Scsi_Host
*shost
= vport_to_shost(vport
);
1280 unsigned long flags
;
1282 spin_lock_irqsave(shost
->host_lock
, flags
);
1283 if (vport
->flags
& (FC_VPORT_DEL
| FC_VPORT_CREATING
)) {
1284 spin_unlock_irqrestore(shost
->host_lock
, flags
);
1287 vport
->flags
|= FC_VPORT_DELETING
;
1288 spin_unlock_irqrestore(shost
->host_lock
, flags
);
1290 fc_queue_work(shost
, &vport
->vport_delete_work
);
1293 static FC_DEVICE_ATTR(vport
, vport_delete
, S_IWUSR
,
1294 NULL
, store_fc_vport_delete
);
1298 * Enable/Disable vport
1299 * Write "1" to disable, write "0" to enable
1302 store_fc_vport_disable(struct device
*dev
, struct device_attribute
*attr
,
1306 struct fc_vport
*vport
= transport_class_to_vport(dev
);
1307 struct Scsi_Host
*shost
= vport_to_shost(vport
);
1308 struct fc_internal
*i
= to_fc_internal(shost
->transportt
);
1311 if (vport
->flags
& (FC_VPORT_DEL
| FC_VPORT_CREATING
))
1315 if (vport
->vport_state
!= FC_VPORT_DISABLED
)
1317 } else if (*buf
== '1') {
1318 if (vport
->vport_state
== FC_VPORT_DISABLED
)
1323 stat
= i
->f
->vport_disable(vport
, ((*buf
== '0') ? false : true));
1324 return stat
? stat
: count
;
1326 static FC_DEVICE_ATTR(vport
, vport_disable
, S_IWUSR
,
1327 NULL
, store_fc_vport_disable
);
1331 * Host Attribute Management
1334 #define fc_host_show_function(field, format_string, sz, cast) \
1336 show_fc_host_##field (struct device *dev, \
1337 struct device_attribute *attr, char *buf) \
1339 struct Scsi_Host *shost = transport_class_to_shost(dev); \
1340 struct fc_internal *i = to_fc_internal(shost->transportt); \
1341 if (i->f->get_host_##field) \
1342 i->f->get_host_##field(shost); \
1343 return snprintf(buf, sz, format_string, cast fc_host_##field(shost)); \
1346 #define fc_host_store_function(field) \
1348 store_fc_host_##field(struct device *dev, \
1349 struct device_attribute *attr, \
1350 const char *buf, size_t count) \
1353 struct Scsi_Host *shost = transport_class_to_shost(dev); \
1354 struct fc_internal *i = to_fc_internal(shost->transportt); \
1357 val = simple_strtoul(buf, &cp, 0); \
1358 if (*cp && (*cp != '\n')) \
1360 i->f->set_host_##field(shost, val); \
1364 #define fc_host_store_str_function(field, slen) \
1366 store_fc_host_##field(struct device *dev, \
1367 struct device_attribute *attr, \
1368 const char *buf, size_t count) \
1370 struct Scsi_Host *shost = transport_class_to_shost(dev); \
1371 struct fc_internal *i = to_fc_internal(shost->transportt); \
1372 unsigned int cnt=count; \
1374 /* count may include a LF at end of string */ \
1375 if (buf[cnt-1] == '\n') \
1377 if (cnt > ((slen) - 1)) \
1379 memcpy(fc_host_##field(shost), buf, cnt); \
1380 i->f->set_host_##field(shost); \
1384 #define fc_host_rd_attr(field, format_string, sz) \
1385 fc_host_show_function(field, format_string, sz, ) \
1386 static FC_DEVICE_ATTR(host, field, S_IRUGO, \
1387 show_fc_host_##field, NULL)
1389 #define fc_host_rd_attr_cast(field, format_string, sz, cast) \
1390 fc_host_show_function(field, format_string, sz, (cast)) \
1391 static FC_DEVICE_ATTR(host, field, S_IRUGO, \
1392 show_fc_host_##field, NULL)
1394 #define fc_host_rw_attr(field, format_string, sz) \
1395 fc_host_show_function(field, format_string, sz, ) \
1396 fc_host_store_function(field) \
1397 static FC_DEVICE_ATTR(host, field, S_IRUGO | S_IWUSR, \
1398 show_fc_host_##field, \
1399 store_fc_host_##field)
1401 #define fc_host_rd_enum_attr(title, maxlen) \
1403 show_fc_host_##title (struct device *dev, \
1404 struct device_attribute *attr, char *buf) \
1406 struct Scsi_Host *shost = transport_class_to_shost(dev); \
1407 struct fc_internal *i = to_fc_internal(shost->transportt); \
1409 if (i->f->get_host_##title) \
1410 i->f->get_host_##title(shost); \
1411 name = get_fc_##title##_name(fc_host_##title(shost)); \
1414 return snprintf(buf, maxlen, "%s\n", name); \
1416 static FC_DEVICE_ATTR(host, title, S_IRUGO, show_fc_host_##title, NULL)
1418 #define SETUP_HOST_ATTRIBUTE_RD(field) \
1419 i->private_host_attrs[count] = device_attr_host_##field; \
1420 i->private_host_attrs[count].attr.mode = S_IRUGO; \
1421 i->private_host_attrs[count].store = NULL; \
1422 i->host_attrs[count] = &i->private_host_attrs[count]; \
1423 if (i->f->show_host_##field) \
1426 #define SETUP_HOST_ATTRIBUTE_RD_NS(field) \
1427 i->private_host_attrs[count] = device_attr_host_##field; \
1428 i->private_host_attrs[count].attr.mode = S_IRUGO; \
1429 i->private_host_attrs[count].store = NULL; \
1430 i->host_attrs[count] = &i->private_host_attrs[count]; \
1433 #define SETUP_HOST_ATTRIBUTE_RW(field) \
1434 i->private_host_attrs[count] = device_attr_host_##field; \
1435 if (!i->f->set_host_##field) { \
1436 i->private_host_attrs[count].attr.mode = S_IRUGO; \
1437 i->private_host_attrs[count].store = NULL; \
1439 i->host_attrs[count] = &i->private_host_attrs[count]; \
1440 if (i->f->show_host_##field) \
1444 #define fc_private_host_show_function(field, format_string, sz, cast) \
1446 show_fc_host_##field (struct device *dev, \
1447 struct device_attribute *attr, char *buf) \
1449 struct Scsi_Host *shost = transport_class_to_shost(dev); \
1450 return snprintf(buf, sz, format_string, cast fc_host_##field(shost)); \
1453 #define fc_private_host_rd_attr(field, format_string, sz) \
1454 fc_private_host_show_function(field, format_string, sz, ) \
1455 static FC_DEVICE_ATTR(host, field, S_IRUGO, \
1456 show_fc_host_##field, NULL)
1458 #define fc_private_host_rd_attr_cast(field, format_string, sz, cast) \
1459 fc_private_host_show_function(field, format_string, sz, (cast)) \
1460 static FC_DEVICE_ATTR(host, field, S_IRUGO, \
1461 show_fc_host_##field, NULL)
1463 #define SETUP_PRIVATE_HOST_ATTRIBUTE_RD(field) \
1464 i->private_host_attrs[count] = device_attr_host_##field; \
1465 i->private_host_attrs[count].attr.mode = S_IRUGO; \
1466 i->private_host_attrs[count].store = NULL; \
1467 i->host_attrs[count] = &i->private_host_attrs[count]; \
1470 #define SETUP_PRIVATE_HOST_ATTRIBUTE_RW(field) \
1472 i->private_host_attrs[count] = device_attr_host_##field; \
1473 i->host_attrs[count] = &i->private_host_attrs[count]; \
1478 /* Fixed Host Attributes */
1481 show_fc_host_supported_classes (struct device
*dev
,
1482 struct device_attribute
*attr
, char *buf
)
1484 struct Scsi_Host
*shost
= transport_class_to_shost(dev
);
1486 if (fc_host_supported_classes(shost
) == FC_COS_UNSPECIFIED
)
1487 return snprintf(buf
, 20, "unspecified\n");
1489 return get_fc_cos_names(fc_host_supported_classes(shost
), buf
);
1491 static FC_DEVICE_ATTR(host
, supported_classes
, S_IRUGO
,
1492 show_fc_host_supported_classes
, NULL
);
1495 show_fc_host_supported_fc4s (struct device
*dev
,
1496 struct device_attribute
*attr
, char *buf
)
1498 struct Scsi_Host
*shost
= transport_class_to_shost(dev
);
1499 return (ssize_t
)show_fc_fc4s(buf
, fc_host_supported_fc4s(shost
));
1501 static FC_DEVICE_ATTR(host
, supported_fc4s
, S_IRUGO
,
1502 show_fc_host_supported_fc4s
, NULL
);
1505 show_fc_host_supported_speeds (struct device
*dev
,
1506 struct device_attribute
*attr
, char *buf
)
1508 struct Scsi_Host
*shost
= transport_class_to_shost(dev
);
1510 if (fc_host_supported_speeds(shost
) == FC_PORTSPEED_UNKNOWN
)
1511 return snprintf(buf
, 20, "unknown\n");
1513 return get_fc_port_speed_names(fc_host_supported_speeds(shost
), buf
);
1515 static FC_DEVICE_ATTR(host
, supported_speeds
, S_IRUGO
,
1516 show_fc_host_supported_speeds
, NULL
);
1519 fc_private_host_rd_attr_cast(node_name
, "0x%llx\n", 20, unsigned long long);
1520 fc_private_host_rd_attr_cast(port_name
, "0x%llx\n", 20, unsigned long long);
1521 fc_private_host_rd_attr_cast(permanent_port_name
, "0x%llx\n", 20,
1522 unsigned long long);
1523 fc_private_host_rd_attr(maxframe_size
, "%u bytes\n", 20);
1524 fc_private_host_rd_attr(max_npiv_vports
, "%u\n", 20);
1525 fc_private_host_rd_attr(serial_number
, "%s\n", (FC_SERIAL_NUMBER_SIZE
+1));
1526 fc_private_host_rd_attr(manufacturer
, "%s\n", FC_SERIAL_NUMBER_SIZE
+ 1);
1527 fc_private_host_rd_attr(model
, "%s\n", FC_SYMBOLIC_NAME_SIZE
+ 1);
1528 fc_private_host_rd_attr(model_description
, "%s\n", FC_SYMBOLIC_NAME_SIZE
+ 1);
1529 fc_private_host_rd_attr(hardware_version
, "%s\n", FC_VERSION_STRING_SIZE
+ 1);
1530 fc_private_host_rd_attr(driver_version
, "%s\n", FC_VERSION_STRING_SIZE
+ 1);
1531 fc_private_host_rd_attr(firmware_version
, "%s\n", FC_VERSION_STRING_SIZE
+ 1);
1532 fc_private_host_rd_attr(optionrom_version
, "%s\n", FC_VERSION_STRING_SIZE
+ 1);
1535 /* Dynamic Host Attributes */
1538 show_fc_host_active_fc4s (struct device
*dev
,
1539 struct device_attribute
*attr
, char *buf
)
1541 struct Scsi_Host
*shost
= transport_class_to_shost(dev
);
1542 struct fc_internal
*i
= to_fc_internal(shost
->transportt
);
1544 if (i
->f
->get_host_active_fc4s
)
1545 i
->f
->get_host_active_fc4s(shost
);
1547 return (ssize_t
)show_fc_fc4s(buf
, fc_host_active_fc4s(shost
));
1549 static FC_DEVICE_ATTR(host
, active_fc4s
, S_IRUGO
,
1550 show_fc_host_active_fc4s
, NULL
);
1553 show_fc_host_speed (struct device
*dev
,
1554 struct device_attribute
*attr
, char *buf
)
1556 struct Scsi_Host
*shost
= transport_class_to_shost(dev
);
1557 struct fc_internal
*i
= to_fc_internal(shost
->transportt
);
1559 if (i
->f
->get_host_speed
)
1560 i
->f
->get_host_speed(shost
);
1562 if (fc_host_speed(shost
) == FC_PORTSPEED_UNKNOWN
)
1563 return snprintf(buf
, 20, "unknown\n");
1565 return get_fc_port_speed_names(fc_host_speed(shost
), buf
);
1567 static FC_DEVICE_ATTR(host
, speed
, S_IRUGO
,
1568 show_fc_host_speed
, NULL
);
1571 fc_host_rd_attr(port_id
, "0x%06x\n", 20);
1572 fc_host_rd_enum_attr(port_type
, FC_PORTTYPE_MAX_NAMELEN
);
1573 fc_host_rd_enum_attr(port_state
, FC_PORTSTATE_MAX_NAMELEN
);
1574 fc_host_rd_attr_cast(fabric_name
, "0x%llx\n", 20, unsigned long long);
1575 fc_host_rd_attr(symbolic_name
, "%s\n", FC_SYMBOLIC_NAME_SIZE
+ 1);
1577 fc_private_host_show_function(system_hostname
, "%s\n",
1578 FC_SYMBOLIC_NAME_SIZE
+ 1, )
1579 fc_host_store_str_function(system_hostname
, FC_SYMBOLIC_NAME_SIZE
)
1580 static FC_DEVICE_ATTR(host
, system_hostname
, S_IRUGO
| S_IWUSR
,
1581 show_fc_host_system_hostname
, store_fc_host_system_hostname
);
1584 /* Private Host Attributes */
1587 show_fc_private_host_tgtid_bind_type(struct device
*dev
,
1588 struct device_attribute
*attr
, char *buf
)
1590 struct Scsi_Host
*shost
= transport_class_to_shost(dev
);
1593 name
= get_fc_tgtid_bind_type_name(fc_host_tgtid_bind_type(shost
));
1596 return snprintf(buf
, FC_BINDTYPE_MAX_NAMELEN
, "%s\n", name
);
1599 #define get_list_head_entry(pos, head, member) \
1600 pos = list_entry((head)->next, typeof(*pos), member)
1603 store_fc_private_host_tgtid_bind_type(struct device
*dev
,
1604 struct device_attribute
*attr
, const char *buf
, size_t count
)
1606 struct Scsi_Host
*shost
= transport_class_to_shost(dev
);
1607 struct fc_rport
*rport
;
1608 enum fc_tgtid_binding_type val
;
1609 unsigned long flags
;
1611 if (get_fc_tgtid_bind_type_match(buf
, &val
))
1614 /* if changing bind type, purge all unused consistent bindings */
1615 if (val
!= fc_host_tgtid_bind_type(shost
)) {
1616 spin_lock_irqsave(shost
->host_lock
, flags
);
1617 while (!list_empty(&fc_host_rport_bindings(shost
))) {
1618 get_list_head_entry(rport
,
1619 &fc_host_rport_bindings(shost
), peers
);
1620 list_del(&rport
->peers
);
1621 rport
->port_state
= FC_PORTSTATE_DELETED
;
1622 fc_queue_work(shost
, &rport
->rport_delete_work
);
1624 spin_unlock_irqrestore(shost
->host_lock
, flags
);
1627 fc_host_tgtid_bind_type(shost
) = val
;
1631 static FC_DEVICE_ATTR(host
, tgtid_bind_type
, S_IRUGO
| S_IWUSR
,
1632 show_fc_private_host_tgtid_bind_type
,
1633 store_fc_private_host_tgtid_bind_type
);
1636 store_fc_private_host_issue_lip(struct device
*dev
,
1637 struct device_attribute
*attr
, const char *buf
, size_t count
)
1639 struct Scsi_Host
*shost
= transport_class_to_shost(dev
);
1640 struct fc_internal
*i
= to_fc_internal(shost
->transportt
);
1643 /* ignore any data value written to the attribute */
1644 if (i
->f
->issue_fc_host_lip
) {
1645 ret
= i
->f
->issue_fc_host_lip(shost
);
1646 return ret
? ret
: count
;
1652 static FC_DEVICE_ATTR(host
, issue_lip
, S_IWUSR
, NULL
,
1653 store_fc_private_host_issue_lip
);
1656 store_fc_private_host_dev_loss_tmo(struct device
*dev
,
1657 struct device_attribute
*attr
,
1658 const char *buf
, size_t count
)
1660 struct Scsi_Host
*shost
= transport_class_to_shost(dev
);
1661 struct fc_host_attrs
*fc_host
= shost_to_fc_host(shost
);
1662 struct fc_rport
*rport
;
1663 unsigned long val
, flags
;
1666 rc
= fc_str_to_dev_loss(buf
, &val
);
1670 fc_host_dev_loss_tmo(shost
) = val
;
1671 spin_lock_irqsave(shost
->host_lock
, flags
);
1672 list_for_each_entry(rport
, &fc_host
->rports
, peers
)
1673 fc_rport_set_dev_loss_tmo(rport
, val
);
1674 spin_unlock_irqrestore(shost
->host_lock
, flags
);
1678 fc_private_host_show_function(dev_loss_tmo
, "%d\n", 20, );
1679 static FC_DEVICE_ATTR(host
, dev_loss_tmo
, S_IRUGO
| S_IWUSR
,
1680 show_fc_host_dev_loss_tmo
,
1681 store_fc_private_host_dev_loss_tmo
);
1683 fc_private_host_rd_attr(npiv_vports_inuse
, "%u\n", 20);
1686 * Host Statistics Management
1689 /* Show a given an attribute in the statistics group */
1691 fc_stat_show(const struct device
*dev
, char *buf
, unsigned long offset
)
1693 struct Scsi_Host
*shost
= transport_class_to_shost(dev
);
1694 struct fc_internal
*i
= to_fc_internal(shost
->transportt
);
1695 struct fc_host_statistics
*stats
;
1696 ssize_t ret
= -ENOENT
;
1698 if (offset
> sizeof(struct fc_host_statistics
) ||
1699 offset
% sizeof(u64
) != 0)
1702 if (i
->f
->get_fc_host_stats
) {
1703 stats
= (i
->f
->get_fc_host_stats
)(shost
);
1705 ret
= snprintf(buf
, 20, "0x%llx\n",
1706 (unsigned long long)*(u64
*)(((u8
*) stats
) + offset
));
1712 /* generate a read-only statistics attribute */
1713 #define fc_host_statistic(name) \
1714 static ssize_t show_fcstat_##name(struct device *cd, \
1715 struct device_attribute *attr, \
1718 return fc_stat_show(cd, buf, \
1719 offsetof(struct fc_host_statistics, name)); \
1721 static FC_DEVICE_ATTR(host, name, S_IRUGO, show_fcstat_##name, NULL)
1723 fc_host_statistic(seconds_since_last_reset
);
1724 fc_host_statistic(tx_frames
);
1725 fc_host_statistic(tx_words
);
1726 fc_host_statistic(rx_frames
);
1727 fc_host_statistic(rx_words
);
1728 fc_host_statistic(lip_count
);
1729 fc_host_statistic(nos_count
);
1730 fc_host_statistic(error_frames
);
1731 fc_host_statistic(dumped_frames
);
1732 fc_host_statistic(link_failure_count
);
1733 fc_host_statistic(loss_of_sync_count
);
1734 fc_host_statistic(loss_of_signal_count
);
1735 fc_host_statistic(prim_seq_protocol_err_count
);
1736 fc_host_statistic(invalid_tx_word_count
);
1737 fc_host_statistic(invalid_crc_count
);
1738 fc_host_statistic(fcp_input_requests
);
1739 fc_host_statistic(fcp_output_requests
);
1740 fc_host_statistic(fcp_control_requests
);
1741 fc_host_statistic(fcp_input_megabytes
);
1742 fc_host_statistic(fcp_output_megabytes
);
1743 fc_host_statistic(fcp_packet_alloc_failures
);
1744 fc_host_statistic(fcp_packet_aborts
);
1745 fc_host_statistic(fcp_frame_alloc_failures
);
1746 fc_host_statistic(fc_no_free_exch
);
1747 fc_host_statistic(fc_no_free_exch_xid
);
1748 fc_host_statistic(fc_xid_not_found
);
1749 fc_host_statistic(fc_xid_busy
);
1750 fc_host_statistic(fc_seq_not_found
);
1751 fc_host_statistic(fc_non_bls_resp
);
1754 fc_reset_statistics(struct device
*dev
, struct device_attribute
*attr
,
1755 const char *buf
, size_t count
)
1757 struct Scsi_Host
*shost
= transport_class_to_shost(dev
);
1758 struct fc_internal
*i
= to_fc_internal(shost
->transportt
);
1760 /* ignore any data value written to the attribute */
1761 if (i
->f
->reset_fc_host_stats
) {
1762 i
->f
->reset_fc_host_stats(shost
);
1768 static FC_DEVICE_ATTR(host
, reset_statistics
, S_IWUSR
, NULL
,
1769 fc_reset_statistics
);
1771 static struct attribute
*fc_statistics_attrs
[] = {
1772 &device_attr_host_seconds_since_last_reset
.attr
,
1773 &device_attr_host_tx_frames
.attr
,
1774 &device_attr_host_tx_words
.attr
,
1775 &device_attr_host_rx_frames
.attr
,
1776 &device_attr_host_rx_words
.attr
,
1777 &device_attr_host_lip_count
.attr
,
1778 &device_attr_host_nos_count
.attr
,
1779 &device_attr_host_error_frames
.attr
,
1780 &device_attr_host_dumped_frames
.attr
,
1781 &device_attr_host_link_failure_count
.attr
,
1782 &device_attr_host_loss_of_sync_count
.attr
,
1783 &device_attr_host_loss_of_signal_count
.attr
,
1784 &device_attr_host_prim_seq_protocol_err_count
.attr
,
1785 &device_attr_host_invalid_tx_word_count
.attr
,
1786 &device_attr_host_invalid_crc_count
.attr
,
1787 &device_attr_host_fcp_input_requests
.attr
,
1788 &device_attr_host_fcp_output_requests
.attr
,
1789 &device_attr_host_fcp_control_requests
.attr
,
1790 &device_attr_host_fcp_input_megabytes
.attr
,
1791 &device_attr_host_fcp_output_megabytes
.attr
,
1792 &device_attr_host_fcp_packet_alloc_failures
.attr
,
1793 &device_attr_host_fcp_packet_aborts
.attr
,
1794 &device_attr_host_fcp_frame_alloc_failures
.attr
,
1795 &device_attr_host_fc_no_free_exch
.attr
,
1796 &device_attr_host_fc_no_free_exch_xid
.attr
,
1797 &device_attr_host_fc_xid_not_found
.attr
,
1798 &device_attr_host_fc_xid_busy
.attr
,
1799 &device_attr_host_fc_seq_not_found
.attr
,
1800 &device_attr_host_fc_non_bls_resp
.attr
,
1801 &device_attr_host_reset_statistics
.attr
,
1805 static struct attribute_group fc_statistics_group
= {
1806 .name
= "statistics",
1807 .attrs
= fc_statistics_attrs
,
1811 /* Host Vport Attributes */
1814 fc_parse_wwn(const char *ns
, u64
*nm
)
1819 memset(wwn
, 0, sizeof(wwn
));
1821 /* Validate and store the new name */
1822 for (i
=0, j
=0; i
< 16; i
++) {
1825 value
= hex_to_bin(*ns
++);
1827 j
= (j
<< 4) | value
;
1831 wwn
[i
/2] = j
& 0xff;
1836 *nm
= wwn_to_u64(wwn
);
1843 * "Short-cut" sysfs variable to create a new vport on a FC Host.
1844 * Input is a string of the form "<WWPN>:<WWNN>". Other attributes
1845 * will default to a NPIV-based FCP_Initiator; The WWNs are specified
1846 * as hex characters, and may *not* contain any prefixes (e.g. 0x, x, etc)
1849 store_fc_host_vport_create(struct device
*dev
, struct device_attribute
*attr
,
1850 const char *buf
, size_t count
)
1852 struct Scsi_Host
*shost
= transport_class_to_shost(dev
);
1853 struct fc_vport_identifiers vid
;
1854 struct fc_vport
*vport
;
1855 unsigned int cnt
=count
;
1858 memset(&vid
, 0, sizeof(vid
));
1860 /* count may include a LF at end of string */
1861 if (buf
[cnt
-1] == '\n')
1864 /* validate we have enough characters for WWPN */
1865 if ((cnt
!= (16+1+16)) || (buf
[16] != ':'))
1868 stat
= fc_parse_wwn(&buf
[0], &vid
.port_name
);
1872 stat
= fc_parse_wwn(&buf
[17], &vid
.node_name
);
1876 vid
.roles
= FC_PORT_ROLE_FCP_INITIATOR
;
1877 vid
.vport_type
= FC_PORTTYPE_NPIV
;
1878 /* vid.symbolic_name is already zero/NULL's */
1879 vid
.disable
= false; /* always enabled */
1881 /* we only allow support on Channel 0 !!! */
1882 stat
= fc_vport_setup(shost
, 0, &shost
->shost_gendev
, &vid
, &vport
);
1883 return stat
? stat
: count
;
1885 static FC_DEVICE_ATTR(host
, vport_create
, S_IWUSR
, NULL
,
1886 store_fc_host_vport_create
);
1890 * "Short-cut" sysfs variable to delete a vport on a FC Host.
1891 * Vport is identified by a string containing "<WWPN>:<WWNN>".
1892 * The WWNs are specified as hex characters, and may *not* contain
1893 * any prefixes (e.g. 0x, x, etc)
1896 store_fc_host_vport_delete(struct device
*dev
, struct device_attribute
*attr
,
1897 const char *buf
, size_t count
)
1899 struct Scsi_Host
*shost
= transport_class_to_shost(dev
);
1900 struct fc_host_attrs
*fc_host
= shost_to_fc_host(shost
);
1901 struct fc_vport
*vport
;
1903 unsigned long flags
;
1904 unsigned int cnt
=count
;
1907 /* count may include a LF at end of string */
1908 if (buf
[cnt
-1] == '\n')
1911 /* validate we have enough characters for WWPN */
1912 if ((cnt
!= (16+1+16)) || (buf
[16] != ':'))
1915 stat
= fc_parse_wwn(&buf
[0], &wwpn
);
1919 stat
= fc_parse_wwn(&buf
[17], &wwnn
);
1923 spin_lock_irqsave(shost
->host_lock
, flags
);
1925 /* we only allow support on Channel 0 !!! */
1926 list_for_each_entry(vport
, &fc_host
->vports
, peers
) {
1927 if ((vport
->channel
== 0) &&
1928 (vport
->port_name
== wwpn
) && (vport
->node_name
== wwnn
)) {
1929 if (vport
->flags
& (FC_VPORT_DEL
| FC_VPORT_CREATING
))
1931 vport
->flags
|= FC_VPORT_DELETING
;
1936 spin_unlock_irqrestore(shost
->host_lock
, flags
);
1941 stat
= fc_vport_terminate(vport
);
1942 return stat
? stat
: count
;
1944 static FC_DEVICE_ATTR(host
, vport_delete
, S_IWUSR
, NULL
,
1945 store_fc_host_vport_delete
);
1948 static int fc_host_match(struct attribute_container
*cont
,
1951 struct Scsi_Host
*shost
;
1952 struct fc_internal
*i
;
1954 if (!scsi_is_host_device(dev
))
1957 shost
= dev_to_shost(dev
);
1958 if (!shost
->transportt
|| shost
->transportt
->host_attrs
.ac
.class
1959 != &fc_host_class
.class)
1962 i
= to_fc_internal(shost
->transportt
);
1964 return &i
->t
.host_attrs
.ac
== cont
;
1967 static int fc_target_match(struct attribute_container
*cont
,
1970 struct Scsi_Host
*shost
;
1971 struct fc_internal
*i
;
1973 if (!scsi_is_target_device(dev
))
1976 shost
= dev_to_shost(dev
->parent
);
1977 if (!shost
->transportt
|| shost
->transportt
->host_attrs
.ac
.class
1978 != &fc_host_class
.class)
1981 i
= to_fc_internal(shost
->transportt
);
1983 return &i
->t
.target_attrs
.ac
== cont
;
1986 static void fc_rport_dev_release(struct device
*dev
)
1988 struct fc_rport
*rport
= dev_to_rport(dev
);
1989 put_device(dev
->parent
);
1993 int scsi_is_fc_rport(const struct device
*dev
)
1995 return dev
->release
== fc_rport_dev_release
;
1997 EXPORT_SYMBOL(scsi_is_fc_rport
);
1999 static int fc_rport_match(struct attribute_container
*cont
,
2002 struct Scsi_Host
*shost
;
2003 struct fc_internal
*i
;
2005 if (!scsi_is_fc_rport(dev
))
2008 shost
= dev_to_shost(dev
->parent
);
2009 if (!shost
->transportt
|| shost
->transportt
->host_attrs
.ac
.class
2010 != &fc_host_class
.class)
2013 i
= to_fc_internal(shost
->transportt
);
2015 return &i
->rport_attr_cont
.ac
== cont
;
2019 static void fc_vport_dev_release(struct device
*dev
)
2021 struct fc_vport
*vport
= dev_to_vport(dev
);
2022 put_device(dev
->parent
); /* release kobj parent */
2026 int scsi_is_fc_vport(const struct device
*dev
)
2028 return dev
->release
== fc_vport_dev_release
;
2030 EXPORT_SYMBOL(scsi_is_fc_vport
);
2032 static int fc_vport_match(struct attribute_container
*cont
,
2035 struct fc_vport
*vport
;
2036 struct Scsi_Host
*shost
;
2037 struct fc_internal
*i
;
2039 if (!scsi_is_fc_vport(dev
))
2041 vport
= dev_to_vport(dev
);
2043 shost
= vport_to_shost(vport
);
2044 if (!shost
->transportt
|| shost
->transportt
->host_attrs
.ac
.class
2045 != &fc_host_class
.class)
2048 i
= to_fc_internal(shost
->transportt
);
2049 return &i
->vport_attr_cont
.ac
== cont
;
2054 * fc_timed_out - FC Transport I/O timeout intercept handler
2055 * @scmd: The SCSI command which timed out
2057 * This routine protects against error handlers getting invoked while a
2058 * rport is in a blocked state, typically due to a temporarily loss of
2059 * connectivity. If the error handlers are allowed to proceed, requests
2060 * to abort i/o, reset the target, etc will likely fail as there is no way
2061 * to communicate with the device to perform the requested function. These
2062 * failures may result in the midlayer taking the device offline, requiring
2063 * manual intervention to restore operation.
2065 * This routine, called whenever an i/o times out, validates the state of
2066 * the underlying rport. If the rport is blocked, it returns
2067 * EH_RESET_TIMER, which will continue to reschedule the timeout.
2068 * Eventually, either the device will return, or devloss_tmo will fire,
2069 * and when the timeout then fires, it will be handled normally.
2070 * If the rport is not blocked, normal error handling continues.
2073 * This routine assumes no locks are held on entry.
2075 static enum blk_eh_timer_return
2076 fc_timed_out(struct scsi_cmnd
*scmd
)
2078 struct fc_rport
*rport
= starget_to_rport(scsi_target(scmd
->device
));
2080 if (rport
->port_state
== FC_PORTSTATE_BLOCKED
)
2081 return BLK_EH_RESET_TIMER
;
2083 return BLK_EH_NOT_HANDLED
;
2087 * Called by fc_user_scan to locate an rport on the shost that
2088 * matches the channel and target id, and invoke scsi_scan_target()
2092 fc_user_scan_tgt(struct Scsi_Host
*shost
, uint channel
, uint id
, uint lun
)
2094 struct fc_rport
*rport
;
2095 unsigned long flags
;
2097 spin_lock_irqsave(shost
->host_lock
, flags
);
2099 list_for_each_entry(rport
, &fc_host_rports(shost
), peers
) {
2100 if (rport
->scsi_target_id
== -1)
2103 if (rport
->port_state
!= FC_PORTSTATE_ONLINE
)
2106 if ((channel
== rport
->channel
) &&
2107 (id
== rport
->scsi_target_id
)) {
2108 spin_unlock_irqrestore(shost
->host_lock
, flags
);
2109 scsi_scan_target(&rport
->dev
, channel
, id
, lun
, 1);
2114 spin_unlock_irqrestore(shost
->host_lock
, flags
);
2118 * Called via sysfs scan routines. Necessary, as the FC transport
2119 * wants to place all target objects below the rport object. So this
2120 * routine must invoke the scsi_scan_target() routine with the rport
2121 * object as the parent.
2124 fc_user_scan(struct Scsi_Host
*shost
, uint channel
, uint id
, uint lun
)
2129 if (((channel
!= SCAN_WILD_CARD
) && (channel
> shost
->max_channel
)) ||
2130 ((id
!= SCAN_WILD_CARD
) && (id
>= shost
->max_id
)) ||
2131 ((lun
!= SCAN_WILD_CARD
) && (lun
> shost
->max_lun
)))
2134 if (channel
== SCAN_WILD_CARD
) {
2136 chhi
= shost
->max_channel
+ 1;
2142 if (id
== SCAN_WILD_CARD
) {
2144 tgthi
= shost
->max_id
;
2150 for ( ; chlo
< chhi
; chlo
++)
2151 for ( ; tgtlo
< tgthi
; tgtlo
++)
2152 fc_user_scan_tgt(shost
, chlo
, tgtlo
, lun
);
2157 static int fc_tsk_mgmt_response(struct Scsi_Host
*shost
, u64 nexus
, u64 tm_id
,
2160 struct fc_internal
*i
= to_fc_internal(shost
->transportt
);
2161 return i
->f
->tsk_mgmt_response(shost
, nexus
, tm_id
, result
);
2164 static int fc_it_nexus_response(struct Scsi_Host
*shost
, u64 nexus
, int result
)
2166 struct fc_internal
*i
= to_fc_internal(shost
->transportt
);
2167 return i
->f
->it_nexus_response(shost
, nexus
, result
);
2170 struct scsi_transport_template
*
2171 fc_attach_transport(struct fc_function_template
*ft
)
2174 struct fc_internal
*i
= kzalloc(sizeof(struct fc_internal
),
2180 i
->t
.target_attrs
.ac
.attrs
= &i
->starget_attrs
[0];
2181 i
->t
.target_attrs
.ac
.class = &fc_transport_class
.class;
2182 i
->t
.target_attrs
.ac
.match
= fc_target_match
;
2183 i
->t
.target_size
= sizeof(struct fc_starget_attrs
);
2184 transport_container_register(&i
->t
.target_attrs
);
2186 i
->t
.host_attrs
.ac
.attrs
= &i
->host_attrs
[0];
2187 i
->t
.host_attrs
.ac
.class = &fc_host_class
.class;
2188 i
->t
.host_attrs
.ac
.match
= fc_host_match
;
2189 i
->t
.host_size
= sizeof(struct fc_host_attrs
);
2190 if (ft
->get_fc_host_stats
)
2191 i
->t
.host_attrs
.statistics
= &fc_statistics_group
;
2192 transport_container_register(&i
->t
.host_attrs
);
2194 i
->rport_attr_cont
.ac
.attrs
= &i
->rport_attrs
[0];
2195 i
->rport_attr_cont
.ac
.class = &fc_rport_class
.class;
2196 i
->rport_attr_cont
.ac
.match
= fc_rport_match
;
2197 transport_container_register(&i
->rport_attr_cont
);
2199 i
->vport_attr_cont
.ac
.attrs
= &i
->vport_attrs
[0];
2200 i
->vport_attr_cont
.ac
.class = &fc_vport_class
.class;
2201 i
->vport_attr_cont
.ac
.match
= fc_vport_match
;
2202 transport_container_register(&i
->vport_attr_cont
);
2206 /* Transport uses the shost workq for scsi scanning */
2207 i
->t
.create_work_queue
= 1;
2209 i
->t
.eh_timed_out
= fc_timed_out
;
2211 i
->t
.user_scan
= fc_user_scan
;
2213 /* target-mode drivers' functions */
2214 i
->t
.tsk_mgmt_response
= fc_tsk_mgmt_response
;
2215 i
->t
.it_nexus_response
= fc_it_nexus_response
;
2218 * Setup SCSI Target Attributes.
2221 SETUP_STARGET_ATTRIBUTE_RD(node_name
);
2222 SETUP_STARGET_ATTRIBUTE_RD(port_name
);
2223 SETUP_STARGET_ATTRIBUTE_RD(port_id
);
2225 BUG_ON(count
> FC_STARGET_NUM_ATTRS
);
2227 i
->starget_attrs
[count
] = NULL
;
2231 * Setup SCSI Host Attributes.
2234 SETUP_HOST_ATTRIBUTE_RD(node_name
);
2235 SETUP_HOST_ATTRIBUTE_RD(port_name
);
2236 SETUP_HOST_ATTRIBUTE_RD(permanent_port_name
);
2237 SETUP_HOST_ATTRIBUTE_RD(supported_classes
);
2238 SETUP_HOST_ATTRIBUTE_RD(supported_fc4s
);
2239 SETUP_HOST_ATTRIBUTE_RD(supported_speeds
);
2240 SETUP_HOST_ATTRIBUTE_RD(maxframe_size
);
2241 if (ft
->vport_create
) {
2242 SETUP_HOST_ATTRIBUTE_RD_NS(max_npiv_vports
);
2243 SETUP_HOST_ATTRIBUTE_RD_NS(npiv_vports_inuse
);
2245 SETUP_HOST_ATTRIBUTE_RD(serial_number
);
2246 SETUP_HOST_ATTRIBUTE_RD(manufacturer
);
2247 SETUP_HOST_ATTRIBUTE_RD(model
);
2248 SETUP_HOST_ATTRIBUTE_RD(model_description
);
2249 SETUP_HOST_ATTRIBUTE_RD(hardware_version
);
2250 SETUP_HOST_ATTRIBUTE_RD(driver_version
);
2251 SETUP_HOST_ATTRIBUTE_RD(firmware_version
);
2252 SETUP_HOST_ATTRIBUTE_RD(optionrom_version
);
2254 SETUP_HOST_ATTRIBUTE_RD(port_id
);
2255 SETUP_HOST_ATTRIBUTE_RD(port_type
);
2256 SETUP_HOST_ATTRIBUTE_RD(port_state
);
2257 SETUP_HOST_ATTRIBUTE_RD(active_fc4s
);
2258 SETUP_HOST_ATTRIBUTE_RD(speed
);
2259 SETUP_HOST_ATTRIBUTE_RD(fabric_name
);
2260 SETUP_HOST_ATTRIBUTE_RD(symbolic_name
);
2261 SETUP_HOST_ATTRIBUTE_RW(system_hostname
);
2263 /* Transport-managed attributes */
2264 SETUP_PRIVATE_HOST_ATTRIBUTE_RW(dev_loss_tmo
);
2265 SETUP_PRIVATE_HOST_ATTRIBUTE_RW(tgtid_bind_type
);
2266 if (ft
->issue_fc_host_lip
)
2267 SETUP_PRIVATE_HOST_ATTRIBUTE_RW(issue_lip
);
2268 if (ft
->vport_create
)
2269 SETUP_PRIVATE_HOST_ATTRIBUTE_RW(vport_create
);
2270 if (ft
->vport_delete
)
2271 SETUP_PRIVATE_HOST_ATTRIBUTE_RW(vport_delete
);
2273 BUG_ON(count
> FC_HOST_NUM_ATTRS
);
2275 i
->host_attrs
[count
] = NULL
;
2278 * Setup Remote Port Attributes.
2281 SETUP_RPORT_ATTRIBUTE_RD(maxframe_size
);
2282 SETUP_RPORT_ATTRIBUTE_RD(supported_classes
);
2283 SETUP_RPORT_ATTRIBUTE_RW(dev_loss_tmo
);
2284 SETUP_PRIVATE_RPORT_ATTRIBUTE_RD(node_name
);
2285 SETUP_PRIVATE_RPORT_ATTRIBUTE_RD(port_name
);
2286 SETUP_PRIVATE_RPORT_ATTRIBUTE_RD(port_id
);
2287 SETUP_PRIVATE_RPORT_ATTRIBUTE_RD(roles
);
2288 SETUP_PRIVATE_RPORT_ATTRIBUTE_RD(port_state
);
2289 SETUP_PRIVATE_RPORT_ATTRIBUTE_RD(scsi_target_id
);
2290 SETUP_PRIVATE_RPORT_ATTRIBUTE_RW(fast_io_fail_tmo
);
2292 BUG_ON(count
> FC_RPORT_NUM_ATTRS
);
2294 i
->rport_attrs
[count
] = NULL
;
2297 * Setup Virtual Port Attributes.
2300 SETUP_PRIVATE_VPORT_ATTRIBUTE_RD(vport_state
);
2301 SETUP_PRIVATE_VPORT_ATTRIBUTE_RD(vport_last_state
);
2302 SETUP_PRIVATE_VPORT_ATTRIBUTE_RD(node_name
);
2303 SETUP_PRIVATE_VPORT_ATTRIBUTE_RD(port_name
);
2304 SETUP_PRIVATE_VPORT_ATTRIBUTE_RD(roles
);
2305 SETUP_PRIVATE_VPORT_ATTRIBUTE_RD(vport_type
);
2306 SETUP_VPORT_ATTRIBUTE_RW(symbolic_name
);
2307 SETUP_VPORT_ATTRIBUTE_WR(vport_delete
);
2308 SETUP_VPORT_ATTRIBUTE_WR(vport_disable
);
2310 BUG_ON(count
> FC_VPORT_NUM_ATTRS
);
2312 i
->vport_attrs
[count
] = NULL
;
2316 EXPORT_SYMBOL(fc_attach_transport
);
2318 void fc_release_transport(struct scsi_transport_template
*t
)
2320 struct fc_internal
*i
= to_fc_internal(t
);
2322 transport_container_unregister(&i
->t
.target_attrs
);
2323 transport_container_unregister(&i
->t
.host_attrs
);
2324 transport_container_unregister(&i
->rport_attr_cont
);
2325 transport_container_unregister(&i
->vport_attr_cont
);
2329 EXPORT_SYMBOL(fc_release_transport
);
2332 * fc_queue_work - Queue work to the fc_host workqueue.
2333 * @shost: Pointer to Scsi_Host bound to fc_host.
2334 * @work: Work to queue for execution.
2337 * 1 - work queued for execution
2338 * 0 - work is already queued
2339 * -EINVAL - work queue doesn't exist
2342 fc_queue_work(struct Scsi_Host
*shost
, struct work_struct
*work
)
2344 if (unlikely(!fc_host_work_q(shost
))) {
2346 "ERROR: FC host '%s' attempted to queue work, "
2347 "when no workqueue created.\n", shost
->hostt
->name
);
2353 return queue_work(fc_host_work_q(shost
), work
);
2357 * fc_flush_work - Flush a fc_host's workqueue.
2358 * @shost: Pointer to Scsi_Host bound to fc_host.
2361 fc_flush_work(struct Scsi_Host
*shost
)
2363 if (!fc_host_work_q(shost
)) {
2365 "ERROR: FC host '%s' attempted to flush work, "
2366 "when no workqueue created.\n", shost
->hostt
->name
);
2371 flush_workqueue(fc_host_work_q(shost
));
2375 * fc_queue_devloss_work - Schedule work for the fc_host devloss workqueue.
2376 * @shost: Pointer to Scsi_Host bound to fc_host.
2377 * @work: Work to queue for execution.
2378 * @delay: jiffies to delay the work queuing
2381 * 1 on success / 0 already queued / < 0 for error
2384 fc_queue_devloss_work(struct Scsi_Host
*shost
, struct delayed_work
*work
,
2385 unsigned long delay
)
2387 if (unlikely(!fc_host_devloss_work_q(shost
))) {
2389 "ERROR: FC host '%s' attempted to queue work, "
2390 "when no workqueue created.\n", shost
->hostt
->name
);
2396 return queue_delayed_work(fc_host_devloss_work_q(shost
), work
, delay
);
2400 * fc_flush_devloss - Flush a fc_host's devloss workqueue.
2401 * @shost: Pointer to Scsi_Host bound to fc_host.
2404 fc_flush_devloss(struct Scsi_Host
*shost
)
2406 if (!fc_host_devloss_work_q(shost
)) {
2408 "ERROR: FC host '%s' attempted to flush work, "
2409 "when no workqueue created.\n", shost
->hostt
->name
);
2414 flush_workqueue(fc_host_devloss_work_q(shost
));
2419 * fc_remove_host - called to terminate any fc_transport-related elements for a scsi host.
2420 * @shost: Which &Scsi_Host
2422 * This routine is expected to be called immediately preceding the
2423 * a driver's call to scsi_remove_host().
2425 * WARNING: A driver utilizing the fc_transport, which fails to call
2426 * this routine prior to scsi_remove_host(), will leave dangling
2427 * objects in /sys/class/fc_remote_ports. Access to any of these
2428 * objects can result in a system crash !!!
2431 * This routine assumes no locks are held on entry.
2434 fc_remove_host(struct Scsi_Host
*shost
)
2436 struct fc_vport
*vport
= NULL
, *next_vport
= NULL
;
2437 struct fc_rport
*rport
= NULL
, *next_rport
= NULL
;
2438 struct workqueue_struct
*work_q
;
2439 struct fc_host_attrs
*fc_host
= shost_to_fc_host(shost
);
2440 unsigned long flags
;
2442 spin_lock_irqsave(shost
->host_lock
, flags
);
2444 /* Remove any vports */
2445 list_for_each_entry_safe(vport
, next_vport
, &fc_host
->vports
, peers
)
2446 fc_queue_work(shost
, &vport
->vport_delete_work
);
2448 /* Remove any remote ports */
2449 list_for_each_entry_safe(rport
, next_rport
,
2450 &fc_host
->rports
, peers
) {
2451 list_del(&rport
->peers
);
2452 rport
->port_state
= FC_PORTSTATE_DELETED
;
2453 fc_queue_work(shost
, &rport
->rport_delete_work
);
2456 list_for_each_entry_safe(rport
, next_rport
,
2457 &fc_host
->rport_bindings
, peers
) {
2458 list_del(&rport
->peers
);
2459 rport
->port_state
= FC_PORTSTATE_DELETED
;
2460 fc_queue_work(shost
, &rport
->rport_delete_work
);
2463 spin_unlock_irqrestore(shost
->host_lock
, flags
);
2465 /* flush all scan work items */
2466 scsi_flush_work(shost
);
2468 /* flush all stgt delete, and rport delete work items, then kill it */
2469 if (fc_host
->work_q
) {
2470 work_q
= fc_host
->work_q
;
2471 fc_host
->work_q
= NULL
;
2472 destroy_workqueue(work_q
);
2475 /* flush all devloss work items, then kill it */
2476 if (fc_host
->devloss_work_q
) {
2477 work_q
= fc_host
->devloss_work_q
;
2478 fc_host
->devloss_work_q
= NULL
;
2479 destroy_workqueue(work_q
);
2482 EXPORT_SYMBOL(fc_remove_host
);
2484 static void fc_terminate_rport_io(struct fc_rport
*rport
)
2486 struct Scsi_Host
*shost
= rport_to_shost(rport
);
2487 struct fc_internal
*i
= to_fc_internal(shost
->transportt
);
2489 /* Involve the LLDD if possible to terminate all io on the rport. */
2490 if (i
->f
->terminate_rport_io
)
2491 i
->f
->terminate_rport_io(rport
);
2494 * Must unblock to flush queued IO. scsi-ml will fail incoming reqs.
2496 scsi_target_unblock(&rport
->dev
, SDEV_TRANSPORT_OFFLINE
);
2500 * fc_starget_delete - called to delete the scsi descendants of an rport
2501 * @work: remote port to be operated on.
2503 * Deletes target and all sdevs.
2506 fc_starget_delete(struct work_struct
*work
)
2508 struct fc_rport
*rport
=
2509 container_of(work
, struct fc_rport
, stgt_delete_work
);
2511 fc_terminate_rport_io(rport
);
2512 scsi_remove_target(&rport
->dev
);
2517 * fc_rport_final_delete - finish rport termination and delete it.
2518 * @work: remote port to be deleted.
2521 fc_rport_final_delete(struct work_struct
*work
)
2523 struct fc_rport
*rport
=
2524 container_of(work
, struct fc_rport
, rport_delete_work
);
2525 struct device
*dev
= &rport
->dev
;
2526 struct Scsi_Host
*shost
= rport_to_shost(rport
);
2527 struct fc_internal
*i
= to_fc_internal(shost
->transportt
);
2528 unsigned long flags
;
2529 int do_callback
= 0;
2531 fc_terminate_rport_io(rport
);
2534 * if a scan is pending, flush the SCSI Host work_q so that
2535 * that we can reclaim the rport scan work element.
2537 if (rport
->flags
& FC_RPORT_SCAN_PENDING
)
2538 scsi_flush_work(shost
);
2541 * Cancel any outstanding timers. These should really exist
2542 * only when rmmod'ing the LLDD and we're asking for
2543 * immediate termination of the rports
2545 spin_lock_irqsave(shost
->host_lock
, flags
);
2546 if (rport
->flags
& FC_RPORT_DEVLOSS_PENDING
) {
2547 spin_unlock_irqrestore(shost
->host_lock
, flags
);
2548 if (!cancel_delayed_work(&rport
->fail_io_work
))
2549 fc_flush_devloss(shost
);
2550 if (!cancel_delayed_work(&rport
->dev_loss_work
))
2551 fc_flush_devloss(shost
);
2552 cancel_work_sync(&rport
->scan_work
);
2553 spin_lock_irqsave(shost
->host_lock
, flags
);
2554 rport
->flags
&= ~FC_RPORT_DEVLOSS_PENDING
;
2556 spin_unlock_irqrestore(shost
->host_lock
, flags
);
2558 /* Delete SCSI target and sdevs */
2559 if (rport
->scsi_target_id
!= -1)
2560 fc_starget_delete(&rport
->stgt_delete_work
);
2563 * Notify the driver that the rport is now dead. The LLDD will
2564 * also guarantee that any communication to the rport is terminated
2566 * Avoid this call if we already called it when we preserved the
2567 * rport for the binding.
2569 spin_lock_irqsave(shost
->host_lock
, flags
);
2570 if (!(rport
->flags
& FC_RPORT_DEVLOSS_CALLBK_DONE
) &&
2571 (i
->f
->dev_loss_tmo_callbk
)) {
2572 rport
->flags
|= FC_RPORT_DEVLOSS_CALLBK_DONE
;
2575 spin_unlock_irqrestore(shost
->host_lock
, flags
);
2578 i
->f
->dev_loss_tmo_callbk(rport
);
2580 fc_bsg_remove(rport
->rqst_q
);
2582 transport_remove_device(dev
);
2584 transport_destroy_device(dev
);
2585 put_device(&shost
->shost_gendev
); /* for fc_host->rport list */
2586 put_device(dev
); /* for self-reference */
2591 * fc_rport_create - allocates and creates a remote FC port.
2592 * @shost: scsi host the remote port is connected to.
2593 * @channel: Channel on shost port connected to.
2594 * @ids: The world wide names, fc address, and FC4 port
2595 * roles for the remote port.
2597 * Allocates and creates the remoter port structure, including the
2598 * class and sysfs creation.
2601 * This routine assumes no locks are held on entry.
2603 static struct fc_rport
*
2604 fc_rport_create(struct Scsi_Host
*shost
, int channel
,
2605 struct fc_rport_identifiers
*ids
)
2607 struct fc_host_attrs
*fc_host
= shost_to_fc_host(shost
);
2608 struct fc_internal
*fci
= to_fc_internal(shost
->transportt
);
2609 struct fc_rport
*rport
;
2611 unsigned long flags
;
2615 size
= (sizeof(struct fc_rport
) + fci
->f
->dd_fcrport_size
);
2616 rport
= kzalloc(size
, GFP_KERNEL
);
2617 if (unlikely(!rport
)) {
2618 printk(KERN_ERR
"%s: allocation failure\n", __func__
);
2622 rport
->maxframe_size
= -1;
2623 rport
->supported_classes
= FC_COS_UNSPECIFIED
;
2624 rport
->dev_loss_tmo
= fc_host
->dev_loss_tmo
;
2625 memcpy(&rport
->node_name
, &ids
->node_name
, sizeof(rport
->node_name
));
2626 memcpy(&rport
->port_name
, &ids
->port_name
, sizeof(rport
->port_name
));
2627 rport
->port_id
= ids
->port_id
;
2628 rport
->roles
= ids
->roles
;
2629 rport
->port_state
= FC_PORTSTATE_ONLINE
;
2630 if (fci
->f
->dd_fcrport_size
)
2631 rport
->dd_data
= &rport
[1];
2632 rport
->channel
= channel
;
2633 rport
->fast_io_fail_tmo
= -1;
2635 INIT_DELAYED_WORK(&rport
->dev_loss_work
, fc_timeout_deleted_rport
);
2636 INIT_DELAYED_WORK(&rport
->fail_io_work
, fc_timeout_fail_rport_io
);
2637 INIT_WORK(&rport
->scan_work
, fc_scsi_scan_rport
);
2638 INIT_WORK(&rport
->stgt_delete_work
, fc_starget_delete
);
2639 INIT_WORK(&rport
->rport_delete_work
, fc_rport_final_delete
);
2641 spin_lock_irqsave(shost
->host_lock
, flags
);
2643 rport
->number
= fc_host
->next_rport_number
++;
2644 if (rport
->roles
& FC_PORT_ROLE_FCP_TARGET
)
2645 rport
->scsi_target_id
= fc_host
->next_target_id
++;
2647 rport
->scsi_target_id
= -1;
2648 list_add_tail(&rport
->peers
, &fc_host
->rports
);
2649 get_device(&shost
->shost_gendev
); /* for fc_host->rport list */
2651 spin_unlock_irqrestore(shost
->host_lock
, flags
);
2654 device_initialize(dev
); /* takes self reference */
2655 dev
->parent
= get_device(&shost
->shost_gendev
); /* parent reference */
2656 dev
->release
= fc_rport_dev_release
;
2657 dev_set_name(dev
, "rport-%d:%d-%d",
2658 shost
->host_no
, channel
, rport
->number
);
2659 transport_setup_device(dev
);
2661 error
= device_add(dev
);
2663 printk(KERN_ERR
"FC Remote Port device_add failed\n");
2666 transport_add_device(dev
);
2667 transport_configure_device(dev
);
2669 fc_bsg_rportadd(shost
, rport
);
2670 /* ignore any bsg add error - we just can't do sgio */
2672 if (rport
->roles
& FC_PORT_ROLE_FCP_TARGET
) {
2673 /* initiate a scan of the target */
2674 rport
->flags
|= FC_RPORT_SCAN_PENDING
;
2675 scsi_queue_work(shost
, &rport
->scan_work
);
2681 transport_destroy_device(dev
);
2682 spin_lock_irqsave(shost
->host_lock
, flags
);
2683 list_del(&rport
->peers
);
2684 put_device(&shost
->shost_gendev
); /* for fc_host->rport list */
2685 spin_unlock_irqrestore(shost
->host_lock
, flags
);
2686 put_device(dev
->parent
);
2692 * fc_remote_port_add - notify fc transport of the existence of a remote FC port.
2693 * @shost: scsi host the remote port is connected to.
2694 * @channel: Channel on shost port connected to.
2695 * @ids: The world wide names, fc address, and FC4 port
2696 * roles for the remote port.
2698 * The LLDD calls this routine to notify the transport of the existence
2699 * of a remote port. The LLDD provides the unique identifiers (wwpn,wwn)
2700 * of the port, it's FC address (port_id), and the FC4 roles that are
2701 * active for the port.
2703 * For ports that are FCP targets (aka scsi targets), the FC transport
2704 * maintains consistent target id bindings on behalf of the LLDD.
2705 * A consistent target id binding is an assignment of a target id to
2706 * a remote port identifier, which persists while the scsi host is
2707 * attached. The remote port can disappear, then later reappear, and
2708 * it's target id assignment remains the same. This allows for shifts
2709 * in FC addressing (if binding by wwpn or wwnn) with no apparent
2710 * changes to the scsi subsystem which is based on scsi host number and
2711 * target id values. Bindings are only valid during the attachment of
2712 * the scsi host. If the host detaches, then later re-attaches, target
2713 * id bindings may change.
2715 * This routine is responsible for returning a remote port structure.
2716 * The routine will search the list of remote ports it maintains
2717 * internally on behalf of consistent target id mappings. If found, the
2718 * remote port structure will be reused. Otherwise, a new remote port
2719 * structure will be allocated.
2721 * Whenever a remote port is allocated, a new fc_remote_port class
2722 * device is created.
2724 * Should not be called from interrupt context.
2727 * This routine assumes no locks are held on entry.
2730 fc_remote_port_add(struct Scsi_Host
*shost
, int channel
,
2731 struct fc_rport_identifiers
*ids
)
2733 struct fc_internal
*fci
= to_fc_internal(shost
->transportt
);
2734 struct fc_host_attrs
*fc_host
= shost_to_fc_host(shost
);
2735 struct fc_rport
*rport
;
2736 unsigned long flags
;
2739 /* ensure any stgt delete functions are done */
2740 fc_flush_work(shost
);
2743 * Search the list of "active" rports, for an rport that has been
2744 * deleted, but we've held off the real delete while the target
2745 * is in a "blocked" state.
2747 spin_lock_irqsave(shost
->host_lock
, flags
);
2749 list_for_each_entry(rport
, &fc_host
->rports
, peers
) {
2751 if ((rport
->port_state
== FC_PORTSTATE_BLOCKED
) &&
2752 (rport
->channel
== channel
)) {
2754 switch (fc_host
->tgtid_bind_type
) {
2755 case FC_TGTID_BIND_BY_WWPN
:
2756 case FC_TGTID_BIND_NONE
:
2757 if (rport
->port_name
== ids
->port_name
)
2760 case FC_TGTID_BIND_BY_WWNN
:
2761 if (rport
->node_name
== ids
->node_name
)
2764 case FC_TGTID_BIND_BY_ID
:
2765 if (rport
->port_id
== ids
->port_id
)
2772 memcpy(&rport
->node_name
, &ids
->node_name
,
2773 sizeof(rport
->node_name
));
2774 memcpy(&rport
->port_name
, &ids
->port_name
,
2775 sizeof(rport
->port_name
));
2776 rport
->port_id
= ids
->port_id
;
2778 rport
->port_state
= FC_PORTSTATE_ONLINE
;
2779 rport
->roles
= ids
->roles
;
2781 spin_unlock_irqrestore(shost
->host_lock
, flags
);
2783 if (fci
->f
->dd_fcrport_size
)
2784 memset(rport
->dd_data
, 0,
2785 fci
->f
->dd_fcrport_size
);
2788 * If we were not a target, cancel the
2789 * io terminate and rport timers, and
2792 * If we were a target, but our new role
2793 * doesn't indicate a target, leave the
2794 * timers running expecting the role to
2795 * change as the target fully logs in. If
2796 * it doesn't, the target will be torn down.
2798 * If we were a target, and our role shows
2799 * we're still a target, cancel the timers
2800 * and kick off a scan.
2803 /* was a target, not in roles */
2804 if ((rport
->scsi_target_id
!= -1) &&
2805 (!(ids
->roles
& FC_PORT_ROLE_FCP_TARGET
)))
2809 * Stop the fail io and dev_loss timers.
2810 * If they flush, the port_state will
2811 * be checked and will NOOP the function.
2813 if (!cancel_delayed_work(&rport
->fail_io_work
))
2814 fc_flush_devloss(shost
);
2815 if (!cancel_delayed_work(&rport
->dev_loss_work
))
2816 fc_flush_devloss(shost
);
2818 spin_lock_irqsave(shost
->host_lock
, flags
);
2820 rport
->flags
&= ~(FC_RPORT_FAST_FAIL_TIMEDOUT
|
2821 FC_RPORT_DEVLOSS_PENDING
|
2822 FC_RPORT_DEVLOSS_CALLBK_DONE
);
2824 spin_unlock_irqrestore(shost
->host_lock
, flags
);
2826 /* if target, initiate a scan */
2827 if (rport
->scsi_target_id
!= -1) {
2828 scsi_target_unblock(&rport
->dev
,
2830 spin_lock_irqsave(shost
->host_lock
,
2832 rport
->flags
|= FC_RPORT_SCAN_PENDING
;
2833 scsi_queue_work(shost
,
2835 spin_unlock_irqrestore(shost
->host_lock
,
2839 fc_bsg_goose_queue(rport
);
2847 * Search the bindings array
2848 * Note: if never a FCP target, you won't be on this list
2850 if (fc_host
->tgtid_bind_type
!= FC_TGTID_BIND_NONE
) {
2852 /* search for a matching consistent binding */
2854 list_for_each_entry(rport
, &fc_host
->rport_bindings
,
2856 if (rport
->channel
!= channel
)
2859 switch (fc_host
->tgtid_bind_type
) {
2860 case FC_TGTID_BIND_BY_WWPN
:
2861 if (rport
->port_name
== ids
->port_name
)
2864 case FC_TGTID_BIND_BY_WWNN
:
2865 if (rport
->node_name
== ids
->node_name
)
2868 case FC_TGTID_BIND_BY_ID
:
2869 if (rport
->port_id
== ids
->port_id
)
2872 case FC_TGTID_BIND_NONE
: /* to keep compiler happy */
2877 list_move_tail(&rport
->peers
, &fc_host
->rports
);
2883 memcpy(&rport
->node_name
, &ids
->node_name
,
2884 sizeof(rport
->node_name
));
2885 memcpy(&rport
->port_name
, &ids
->port_name
,
2886 sizeof(rport
->port_name
));
2887 rport
->port_id
= ids
->port_id
;
2888 rport
->roles
= ids
->roles
;
2889 rport
->port_state
= FC_PORTSTATE_ONLINE
;
2890 rport
->flags
&= ~FC_RPORT_FAST_FAIL_TIMEDOUT
;
2892 if (fci
->f
->dd_fcrport_size
)
2893 memset(rport
->dd_data
, 0,
2894 fci
->f
->dd_fcrport_size
);
2895 spin_unlock_irqrestore(shost
->host_lock
, flags
);
2897 if (ids
->roles
& FC_PORT_ROLE_FCP_TARGET
) {
2898 scsi_target_unblock(&rport
->dev
, SDEV_RUNNING
);
2900 /* initiate a scan of the target */
2901 spin_lock_irqsave(shost
->host_lock
, flags
);
2902 rport
->flags
|= FC_RPORT_SCAN_PENDING
;
2903 scsi_queue_work(shost
, &rport
->scan_work
);
2904 spin_unlock_irqrestore(shost
->host_lock
, flags
);
2910 spin_unlock_irqrestore(shost
->host_lock
, flags
);
2912 /* No consistent binding found - create new remote port entry */
2913 rport
= fc_rport_create(shost
, channel
, ids
);
2917 EXPORT_SYMBOL(fc_remote_port_add
);
2921 * fc_remote_port_delete - notifies the fc transport that a remote port is no longer in existence.
2922 * @rport: The remote port that no longer exists
2924 * The LLDD calls this routine to notify the transport that a remote
2925 * port is no longer part of the topology. Note: Although a port
2926 * may no longer be part of the topology, it may persist in the remote
2927 * ports displayed by the fc_host. We do this under 2 conditions:
2928 * 1) If the port was a scsi target, we delay its deletion by "blocking" it.
2929 * This allows the port to temporarily disappear, then reappear without
2930 * disrupting the SCSI device tree attached to it. During the "blocked"
2931 * period the port will still exist.
2932 * 2) If the port was a scsi target and disappears for longer than we
2933 * expect, we'll delete the port and the tear down the SCSI device tree
2934 * attached to it. However, we want to semi-persist the target id assigned
2935 * to that port if it eventually does exist. The port structure will
2936 * remain (although with minimal information) so that the target id
2939 * If the remote port is not an FCP Target, it will be fully torn down
2940 * and deallocated, including the fc_remote_port class device.
2942 * If the remote port is an FCP Target, the port will be placed in a
2943 * temporary blocked state. From the LLDD's perspective, the rport no
2944 * longer exists. From the SCSI midlayer's perspective, the SCSI target
2945 * exists, but all sdevs on it are blocked from further I/O. The following
2948 * If the remote port does not return (signaled by a LLDD call to
2949 * fc_remote_port_add()) within the dev_loss_tmo timeout, then the
2950 * scsi target is removed - killing all outstanding i/o and removing the
2951 * scsi devices attached ot it. The port structure will be marked Not
2952 * Present and be partially cleared, leaving only enough information to
2953 * recognize the remote port relative to the scsi target id binding if
2954 * it later appears. The port will remain as long as there is a valid
2955 * binding (e.g. until the user changes the binding type or unloads the
2956 * scsi host with the binding).
2958 * If the remote port returns within the dev_loss_tmo value (and matches
2959 * according to the target id binding type), the port structure will be
2960 * reused. If it is no longer a SCSI target, the target will be torn
2961 * down. If it continues to be a SCSI target, then the target will be
2962 * unblocked (allowing i/o to be resumed), and a scan will be activated
2963 * to ensure that all luns are detected.
2965 * Called from normal process context only - cannot be called from interrupt.
2968 * This routine assumes no locks are held on entry.
2971 fc_remote_port_delete(struct fc_rport
*rport
)
2973 struct Scsi_Host
*shost
= rport_to_shost(rport
);
2974 unsigned long timeout
= rport
->dev_loss_tmo
;
2975 unsigned long flags
;
2978 * No need to flush the fc_host work_q's, as all adds are synchronous.
2980 * We do need to reclaim the rport scan work element, so eventually
2981 * (in fc_rport_final_delete()) we'll flush the scsi host work_q if
2982 * there's still a scan pending.
2985 spin_lock_irqsave(shost
->host_lock
, flags
);
2987 if (rport
->port_state
!= FC_PORTSTATE_ONLINE
) {
2988 spin_unlock_irqrestore(shost
->host_lock
, flags
);
2993 * In the past, we if this was not an FCP-Target, we would
2994 * unconditionally just jump to deleting the rport.
2995 * However, rports can be used as node containers by the LLDD,
2996 * and its not appropriate to just terminate the rport at the
2997 * first sign of a loss in connectivity. The LLDD may want to
2998 * send ELS traffic to re-validate the login. If the rport is
2999 * immediately deleted, it makes it inappropriate for a node
3001 * So... we now unconditionally wait dev_loss_tmo before
3002 * destroying an rport.
3005 rport
->port_state
= FC_PORTSTATE_BLOCKED
;
3007 rport
->flags
|= FC_RPORT_DEVLOSS_PENDING
;
3009 spin_unlock_irqrestore(shost
->host_lock
, flags
);
3011 if (rport
->roles
& FC_PORT_ROLE_FCP_INITIATOR
&&
3012 shost
->active_mode
& MODE_TARGET
)
3013 fc_tgt_it_nexus_destroy(shost
, (unsigned long)rport
);
3015 scsi_target_block(&rport
->dev
);
3017 /* see if we need to kill io faster than waiting for device loss */
3018 if ((rport
->fast_io_fail_tmo
!= -1) &&
3019 (rport
->fast_io_fail_tmo
< timeout
))
3020 fc_queue_devloss_work(shost
, &rport
->fail_io_work
,
3021 rport
->fast_io_fail_tmo
* HZ
);
3023 /* cap the length the devices can be blocked until they are deleted */
3024 fc_queue_devloss_work(shost
, &rport
->dev_loss_work
, timeout
* HZ
);
3026 EXPORT_SYMBOL(fc_remote_port_delete
);
3029 * fc_remote_port_rolechg - notifies the fc transport that the roles on a remote may have changed.
3030 * @rport: The remote port that changed.
3031 * @roles: New roles for this port.
3033 * Description: The LLDD calls this routine to notify the transport that the
3034 * roles on a remote port may have changed. The largest effect of this is
3035 * if a port now becomes a FCP Target, it must be allocated a
3036 * scsi target id. If the port is no longer a FCP target, any
3037 * scsi target id value assigned to it will persist in case the
3038 * role changes back to include FCP Target. No changes in the scsi
3039 * midlayer will be invoked if the role changes (in the expectation
3040 * that the role will be resumed. If it doesn't normal error processing
3043 * Should not be called from interrupt context.
3046 * This routine assumes no locks are held on entry.
3049 fc_remote_port_rolechg(struct fc_rport
*rport
, u32 roles
)
3051 struct Scsi_Host
*shost
= rport_to_shost(rport
);
3052 struct fc_host_attrs
*fc_host
= shost_to_fc_host(shost
);
3053 unsigned long flags
;
3057 spin_lock_irqsave(shost
->host_lock
, flags
);
3058 if (roles
& FC_PORT_ROLE_FCP_TARGET
) {
3059 if (rport
->scsi_target_id
== -1) {
3060 rport
->scsi_target_id
= fc_host
->next_target_id
++;
3062 } else if (!(rport
->roles
& FC_PORT_ROLE_FCP_TARGET
))
3064 } else if (shost
->active_mode
& MODE_TARGET
) {
3065 ret
= fc_tgt_it_nexus_create(shost
, (unsigned long)rport
,
3066 (char *)&rport
->node_name
);
3068 printk(KERN_ERR
"FC Remore Port tgt nexus failed %d\n",
3072 rport
->roles
= roles
;
3074 spin_unlock_irqrestore(shost
->host_lock
, flags
);
3078 * There may have been a delete timer running on the
3079 * port. Ensure that it is cancelled as we now know
3080 * the port is an FCP Target.
3081 * Note: we know the rport is exists and in an online
3082 * state as the LLDD would not have had an rport
3083 * reference to pass us.
3085 * Take no action on the del_timer failure as the state
3086 * machine state change will validate the
3089 if (!cancel_delayed_work(&rport
->fail_io_work
))
3090 fc_flush_devloss(shost
);
3091 if (!cancel_delayed_work(&rport
->dev_loss_work
))
3092 fc_flush_devloss(shost
);
3094 spin_lock_irqsave(shost
->host_lock
, flags
);
3095 rport
->flags
&= ~(FC_RPORT_FAST_FAIL_TIMEDOUT
|
3096 FC_RPORT_DEVLOSS_PENDING
|
3097 FC_RPORT_DEVLOSS_CALLBK_DONE
);
3098 spin_unlock_irqrestore(shost
->host_lock
, flags
);
3100 /* ensure any stgt delete functions are done */
3101 fc_flush_work(shost
);
3103 scsi_target_unblock(&rport
->dev
, SDEV_RUNNING
);
3104 /* initiate a scan of the target */
3105 spin_lock_irqsave(shost
->host_lock
, flags
);
3106 rport
->flags
|= FC_RPORT_SCAN_PENDING
;
3107 scsi_queue_work(shost
, &rport
->scan_work
);
3108 spin_unlock_irqrestore(shost
->host_lock
, flags
);
3111 EXPORT_SYMBOL(fc_remote_port_rolechg
);
3114 * fc_timeout_deleted_rport - Timeout handler for a deleted remote port.
3115 * @work: rport target that failed to reappear in the allotted time.
3117 * Description: An attempt to delete a remote port blocks, and if it fails
3118 * to return in the allotted time this gets called.
3121 fc_timeout_deleted_rport(struct work_struct
*work
)
3123 struct fc_rport
*rport
=
3124 container_of(work
, struct fc_rport
, dev_loss_work
.work
);
3125 struct Scsi_Host
*shost
= rport_to_shost(rport
);
3126 struct fc_internal
*i
= to_fc_internal(shost
->transportt
);
3127 struct fc_host_attrs
*fc_host
= shost_to_fc_host(shost
);
3128 unsigned long flags
;
3129 int do_callback
= 0;
3131 spin_lock_irqsave(shost
->host_lock
, flags
);
3133 rport
->flags
&= ~FC_RPORT_DEVLOSS_PENDING
;
3136 * If the port is ONLINE, then it came back. If it was a SCSI
3137 * target, validate it still is. If not, tear down the
3138 * scsi_target on it.
3140 if ((rport
->port_state
== FC_PORTSTATE_ONLINE
) &&
3141 (rport
->scsi_target_id
!= -1) &&
3142 !(rport
->roles
& FC_PORT_ROLE_FCP_TARGET
)) {
3143 dev_printk(KERN_ERR
, &rport
->dev
,
3144 "blocked FC remote port time out: no longer"
3145 " a FCP target, removing starget\n");
3146 spin_unlock_irqrestore(shost
->host_lock
, flags
);
3147 scsi_target_unblock(&rport
->dev
, SDEV_TRANSPORT_OFFLINE
);
3148 fc_queue_work(shost
, &rport
->stgt_delete_work
);
3152 /* NOOP state - we're flushing workq's */
3153 if (rport
->port_state
!= FC_PORTSTATE_BLOCKED
) {
3154 spin_unlock_irqrestore(shost
->host_lock
, flags
);
3155 dev_printk(KERN_ERR
, &rport
->dev
,
3156 "blocked FC remote port time out: leaving"
3158 (rport
->scsi_target_id
!= -1) ? " and starget" : "");
3162 if ((fc_host
->tgtid_bind_type
== FC_TGTID_BIND_NONE
) ||
3163 (rport
->scsi_target_id
== -1)) {
3164 list_del(&rport
->peers
);
3165 rport
->port_state
= FC_PORTSTATE_DELETED
;
3166 dev_printk(KERN_ERR
, &rport
->dev
,
3167 "blocked FC remote port time out: removing"
3169 (rport
->scsi_target_id
!= -1) ? " and starget" : "");
3170 fc_queue_work(shost
, &rport
->rport_delete_work
);
3171 spin_unlock_irqrestore(shost
->host_lock
, flags
);
3175 dev_printk(KERN_ERR
, &rport
->dev
,
3176 "blocked FC remote port time out: removing target and "
3177 "saving binding\n");
3179 list_move_tail(&rport
->peers
, &fc_host
->rport_bindings
);
3182 * Note: We do not remove or clear the hostdata area. This allows
3183 * host-specific target data to persist along with the
3184 * scsi_target_id. It's up to the host to manage it's hostdata area.
3188 * Reinitialize port attributes that may change if the port comes back.
3190 rport
->maxframe_size
= -1;
3191 rport
->supported_classes
= FC_COS_UNSPECIFIED
;
3192 rport
->roles
= FC_PORT_ROLE_UNKNOWN
;
3193 rport
->port_state
= FC_PORTSTATE_NOTPRESENT
;
3194 rport
->flags
&= ~FC_RPORT_FAST_FAIL_TIMEDOUT
;
3197 * Pre-emptively kill I/O rather than waiting for the work queue
3198 * item to teardown the starget. (FCOE libFC folks prefer this
3199 * and to have the rport_port_id still set when it's done).
3201 spin_unlock_irqrestore(shost
->host_lock
, flags
);
3202 fc_terminate_rport_io(rport
);
3204 spin_lock_irqsave(shost
->host_lock
, flags
);
3206 if (rport
->port_state
== FC_PORTSTATE_NOTPRESENT
) { /* still missing */
3208 /* remove the identifiers that aren't used in the consisting binding */
3209 switch (fc_host
->tgtid_bind_type
) {
3210 case FC_TGTID_BIND_BY_WWPN
:
3211 rport
->node_name
= -1;
3212 rport
->port_id
= -1;
3214 case FC_TGTID_BIND_BY_WWNN
:
3215 rport
->port_name
= -1;
3216 rport
->port_id
= -1;
3218 case FC_TGTID_BIND_BY_ID
:
3219 rport
->node_name
= -1;
3220 rport
->port_name
= -1;
3222 case FC_TGTID_BIND_NONE
: /* to keep compiler happy */
3227 * As this only occurs if the remote port (scsi target)
3228 * went away and didn't come back - we'll remove
3229 * all attached scsi devices.
3231 rport
->flags
|= FC_RPORT_DEVLOSS_CALLBK_DONE
;
3232 fc_queue_work(shost
, &rport
->stgt_delete_work
);
3237 spin_unlock_irqrestore(shost
->host_lock
, flags
);
3240 * Notify the driver that the rport is now dead. The LLDD will
3241 * also guarantee that any communication to the rport is terminated
3243 * Note: we set the CALLBK_DONE flag above to correspond
3245 if (do_callback
&& i
->f
->dev_loss_tmo_callbk
)
3246 i
->f
->dev_loss_tmo_callbk(rport
);
3251 * fc_timeout_fail_rport_io - Timeout handler for a fast io failing on a disconnected SCSI target.
3252 * @work: rport to terminate io on.
3254 * Notes: Only requests the failure of the io, not that all are flushed
3255 * prior to returning.
3258 fc_timeout_fail_rport_io(struct work_struct
*work
)
3260 struct fc_rport
*rport
=
3261 container_of(work
, struct fc_rport
, fail_io_work
.work
);
3263 if (rport
->port_state
!= FC_PORTSTATE_BLOCKED
)
3266 rport
->flags
|= FC_RPORT_FAST_FAIL_TIMEDOUT
;
3267 fc_terminate_rport_io(rport
);
3271 * fc_scsi_scan_rport - called to perform a scsi scan on a remote port.
3272 * @work: remote port to be scanned.
3275 fc_scsi_scan_rport(struct work_struct
*work
)
3277 struct fc_rport
*rport
=
3278 container_of(work
, struct fc_rport
, scan_work
);
3279 struct Scsi_Host
*shost
= rport_to_shost(rport
);
3280 struct fc_internal
*i
= to_fc_internal(shost
->transportt
);
3281 unsigned long flags
;
3283 if ((rport
->port_state
== FC_PORTSTATE_ONLINE
) &&
3284 (rport
->roles
& FC_PORT_ROLE_FCP_TARGET
) &&
3285 !(i
->f
->disable_target_scan
)) {
3286 scsi_scan_target(&rport
->dev
, rport
->channel
,
3287 rport
->scsi_target_id
, SCAN_WILD_CARD
, 1);
3290 spin_lock_irqsave(shost
->host_lock
, flags
);
3291 rport
->flags
&= ~FC_RPORT_SCAN_PENDING
;
3292 spin_unlock_irqrestore(shost
->host_lock
, flags
);
3296 * fc_block_scsi_eh - Block SCSI eh thread for blocked fc_rport
3297 * @cmnd: SCSI command that scsi_eh is trying to recover
3299 * This routine can be called from a FC LLD scsi_eh callback. It
3300 * blocks the scsi_eh thread until the fc_rport leaves the
3301 * FC_PORTSTATE_BLOCKED, or the fast_io_fail_tmo fires. This is
3302 * necessary to avoid the scsi_eh failing recovery actions for blocked
3303 * rports which would lead to offlined SCSI devices.
3305 * Returns: 0 if the fc_rport left the state FC_PORTSTATE_BLOCKED.
3306 * FAST_IO_FAIL if the fast_io_fail_tmo fired, this should be
3307 * passed back to scsi_eh.
3309 int fc_block_scsi_eh(struct scsi_cmnd
*cmnd
)
3311 struct Scsi_Host
*shost
= cmnd
->device
->host
;
3312 struct fc_rport
*rport
= starget_to_rport(scsi_target(cmnd
->device
));
3313 unsigned long flags
;
3315 spin_lock_irqsave(shost
->host_lock
, flags
);
3316 while (rport
->port_state
== FC_PORTSTATE_BLOCKED
&&
3317 !(rport
->flags
& FC_RPORT_FAST_FAIL_TIMEDOUT
)) {
3318 spin_unlock_irqrestore(shost
->host_lock
, flags
);
3320 spin_lock_irqsave(shost
->host_lock
, flags
);
3322 spin_unlock_irqrestore(shost
->host_lock
, flags
);
3324 if (rport
->flags
& FC_RPORT_FAST_FAIL_TIMEDOUT
)
3325 return FAST_IO_FAIL
;
3329 EXPORT_SYMBOL(fc_block_scsi_eh
);
3332 * fc_vport_setup - allocates and creates a FC virtual port.
3333 * @shost: scsi host the virtual port is connected to.
3334 * @channel: Channel on shost port connected to.
3335 * @pdev: parent device for vport
3336 * @ids: The world wide names, FC4 port roles, etc for
3338 * @ret_vport: The pointer to the created vport.
3340 * Allocates and creates the vport structure, calls the parent host
3341 * to instantiate the vport, the completes w/ class and sysfs creation.
3344 * This routine assumes no locks are held on entry.
3347 fc_vport_setup(struct Scsi_Host
*shost
, int channel
, struct device
*pdev
,
3348 struct fc_vport_identifiers
*ids
, struct fc_vport
**ret_vport
)
3350 struct fc_host_attrs
*fc_host
= shost_to_fc_host(shost
);
3351 struct fc_internal
*fci
= to_fc_internal(shost
->transportt
);
3352 struct fc_vport
*vport
;
3354 unsigned long flags
;
3360 if ( ! fci
->f
->vport_create
)
3363 size
= (sizeof(struct fc_vport
) + fci
->f
->dd_fcvport_size
);
3364 vport
= kzalloc(size
, GFP_KERNEL
);
3365 if (unlikely(!vport
)) {
3366 printk(KERN_ERR
"%s: allocation failure\n", __func__
);
3370 vport
->vport_state
= FC_VPORT_UNKNOWN
;
3371 vport
->vport_last_state
= FC_VPORT_UNKNOWN
;
3372 vport
->node_name
= ids
->node_name
;
3373 vport
->port_name
= ids
->port_name
;
3374 vport
->roles
= ids
->roles
;
3375 vport
->vport_type
= ids
->vport_type
;
3376 if (fci
->f
->dd_fcvport_size
)
3377 vport
->dd_data
= &vport
[1];
3378 vport
->shost
= shost
;
3379 vport
->channel
= channel
;
3380 vport
->flags
= FC_VPORT_CREATING
;
3381 INIT_WORK(&vport
->vport_delete_work
, fc_vport_sched_delete
);
3383 spin_lock_irqsave(shost
->host_lock
, flags
);
3385 if (fc_host
->npiv_vports_inuse
>= fc_host
->max_npiv_vports
) {
3386 spin_unlock_irqrestore(shost
->host_lock
, flags
);
3390 fc_host
->npiv_vports_inuse
++;
3391 vport
->number
= fc_host
->next_vport_number
++;
3392 list_add_tail(&vport
->peers
, &fc_host
->vports
);
3393 get_device(&shost
->shost_gendev
); /* for fc_host->vport list */
3395 spin_unlock_irqrestore(shost
->host_lock
, flags
);
3398 device_initialize(dev
); /* takes self reference */
3399 dev
->parent
= get_device(pdev
); /* takes parent reference */
3400 dev
->release
= fc_vport_dev_release
;
3401 dev_set_name(dev
, "vport-%d:%d-%d",
3402 shost
->host_no
, channel
, vport
->number
);
3403 transport_setup_device(dev
);
3405 error
= device_add(dev
);
3407 printk(KERN_ERR
"FC Virtual Port device_add failed\n");
3410 transport_add_device(dev
);
3411 transport_configure_device(dev
);
3413 error
= fci
->f
->vport_create(vport
, ids
->disable
);
3415 printk(KERN_ERR
"FC Virtual Port LLDD Create failed\n");
3416 goto delete_vport_all
;
3420 * if the parent isn't the physical adapter's Scsi_Host, ensure
3421 * the Scsi_Host at least contains ia symlink to the vport.
3423 if (pdev
!= &shost
->shost_gendev
) {
3424 error
= sysfs_create_link(&shost
->shost_gendev
.kobj
,
3425 &dev
->kobj
, dev_name(dev
));
3428 "%s: Cannot create vport symlinks for "
3430 __func__
, dev_name(dev
), error
);
3432 spin_lock_irqsave(shost
->host_lock
, flags
);
3433 vport
->flags
&= ~FC_VPORT_CREATING
;
3434 spin_unlock_irqrestore(shost
->host_lock
, flags
);
3436 dev_printk(KERN_NOTICE
, pdev
,
3437 "%s created via shost%d channel %d\n", dev_name(dev
),
3438 shost
->host_no
, channel
);
3445 transport_remove_device(dev
);
3448 transport_destroy_device(dev
);
3449 spin_lock_irqsave(shost
->host_lock
, flags
);
3450 list_del(&vport
->peers
);
3451 put_device(&shost
->shost_gendev
); /* for fc_host->vport list */
3452 fc_host
->npiv_vports_inuse
--;
3453 spin_unlock_irqrestore(shost
->host_lock
, flags
);
3454 put_device(dev
->parent
);
3461 * fc_vport_create - Admin App or LLDD requests creation of a vport
3462 * @shost: scsi host the virtual port is connected to.
3463 * @channel: channel on shost port connected to.
3464 * @ids: The world wide names, FC4 port roles, etc for
3468 * This routine assumes no locks are held on entry.
3471 fc_vport_create(struct Scsi_Host
*shost
, int channel
,
3472 struct fc_vport_identifiers
*ids
)
3475 struct fc_vport
*vport
;
3477 stat
= fc_vport_setup(shost
, channel
, &shost
->shost_gendev
,
3479 return stat
? NULL
: vport
;
3481 EXPORT_SYMBOL(fc_vport_create
);
3484 * fc_vport_terminate - Admin App or LLDD requests termination of a vport
3485 * @vport: fc_vport to be terminated
3487 * Calls the LLDD vport_delete() function, then deallocates and removes
3488 * the vport from the shost and object tree.
3491 * This routine assumes no locks are held on entry.
3494 fc_vport_terminate(struct fc_vport
*vport
)
3496 struct Scsi_Host
*shost
= vport_to_shost(vport
);
3497 struct fc_host_attrs
*fc_host
= shost_to_fc_host(shost
);
3498 struct fc_internal
*i
= to_fc_internal(shost
->transportt
);
3499 struct device
*dev
= &vport
->dev
;
3500 unsigned long flags
;
3503 if (i
->f
->vport_delete
)
3504 stat
= i
->f
->vport_delete(vport
);
3508 spin_lock_irqsave(shost
->host_lock
, flags
);
3509 vport
->flags
&= ~FC_VPORT_DELETING
;
3511 vport
->flags
|= FC_VPORT_DELETED
;
3512 list_del(&vport
->peers
);
3513 fc_host
->npiv_vports_inuse
--;
3514 put_device(&shost
->shost_gendev
); /* for fc_host->vport list */
3516 spin_unlock_irqrestore(shost
->host_lock
, flags
);
3521 if (dev
->parent
!= &shost
->shost_gendev
)
3522 sysfs_remove_link(&shost
->shost_gendev
.kobj
, dev_name(dev
));
3523 transport_remove_device(dev
);
3525 transport_destroy_device(dev
);
3528 * Removing our self-reference should mean our
3529 * release function gets called, which will drop the remaining
3530 * parent reference and free the data structure.
3532 put_device(dev
); /* for self-reference */
3534 return 0; /* SUCCESS */
3536 EXPORT_SYMBOL(fc_vport_terminate
);
3539 * fc_vport_sched_delete - workq-based delete request for a vport
3540 * @work: vport to be deleted.
3543 fc_vport_sched_delete(struct work_struct
*work
)
3545 struct fc_vport
*vport
=
3546 container_of(work
, struct fc_vport
, vport_delete_work
);
3549 stat
= fc_vport_terminate(vport
);
3551 dev_printk(KERN_ERR
, vport
->dev
.parent
,
3552 "%s: %s could not be deleted created via "
3553 "shost%d channel %d - error %d\n", __func__
,
3554 dev_name(&vport
->dev
), vport
->shost
->host_no
,
3555 vport
->channel
, stat
);
3565 * fc_destroy_bsgjob - routine to teardown/delete a fc bsg job
3566 * @job: fc_bsg_job that is to be torn down
3569 fc_destroy_bsgjob(struct fc_bsg_job
*job
)
3571 unsigned long flags
;
3573 spin_lock_irqsave(&job
->job_lock
, flags
);
3575 spin_unlock_irqrestore(&job
->job_lock
, flags
);
3578 spin_unlock_irqrestore(&job
->job_lock
, flags
);
3580 put_device(job
->dev
); /* release reference for the request */
3582 kfree(job
->request_payload
.sg_list
);
3583 kfree(job
->reply_payload
.sg_list
);
3588 * fc_bsg_jobdone - completion routine for bsg requests that the LLD has
3590 * @job: fc_bsg_job that is complete
3593 fc_bsg_jobdone(struct fc_bsg_job
*job
)
3595 struct request
*req
= job
->req
;
3596 struct request
*rsp
= req
->next_rq
;
3599 err
= job
->req
->errors
= job
->reply
->result
;
3602 /* we're only returning the result field in the reply */
3603 job
->req
->sense_len
= sizeof(uint32_t);
3605 job
->req
->sense_len
= job
->reply_len
;
3607 /* we assume all request payload was transferred, residual == 0 */
3611 WARN_ON(job
->reply
->reply_payload_rcv_len
> rsp
->resid_len
);
3613 /* set reply (bidi) residual */
3614 rsp
->resid_len
-= min(job
->reply
->reply_payload_rcv_len
,
3617 blk_complete_request(req
);
3621 * fc_bsg_softirq_done - softirq done routine for destroying the bsg requests
3622 * @rq: BSG request that holds the job to be destroyed
3624 static void fc_bsg_softirq_done(struct request
*rq
)
3626 struct fc_bsg_job
*job
= rq
->special
;
3627 unsigned long flags
;
3629 spin_lock_irqsave(&job
->job_lock
, flags
);
3630 job
->state_flags
|= FC_RQST_STATE_DONE
;
3632 spin_unlock_irqrestore(&job
->job_lock
, flags
);
3634 blk_end_request_all(rq
, rq
->errors
);
3635 fc_destroy_bsgjob(job
);
3639 * fc_bsg_job_timeout - handler for when a bsg request timesout
3640 * @req: request that timed out
3642 static enum blk_eh_timer_return
3643 fc_bsg_job_timeout(struct request
*req
)
3645 struct fc_bsg_job
*job
= (void *) req
->special
;
3646 struct Scsi_Host
*shost
= job
->shost
;
3647 struct fc_internal
*i
= to_fc_internal(shost
->transportt
);
3648 unsigned long flags
;
3649 int err
= 0, done
= 0;
3651 if (job
->rport
&& job
->rport
->port_state
== FC_PORTSTATE_BLOCKED
)
3652 return BLK_EH_RESET_TIMER
;
3654 spin_lock_irqsave(&job
->job_lock
, flags
);
3655 if (job
->state_flags
& FC_RQST_STATE_DONE
)
3659 spin_unlock_irqrestore(&job
->job_lock
, flags
);
3661 if (!done
&& i
->f
->bsg_timeout
) {
3662 /* call LLDD to abort the i/o as it has timed out */
3663 err
= i
->f
->bsg_timeout(job
);
3664 if (err
== -EAGAIN
) {
3666 return BLK_EH_RESET_TIMER
;
3668 printk(KERN_ERR
"ERROR: FC BSG request timeout - LLD "
3669 "abort failed with status %d\n", err
);
3672 /* the blk_end_sync_io() doesn't check the error */
3674 return BLK_EH_NOT_HANDLED
;
3676 return BLK_EH_HANDLED
;
3680 fc_bsg_map_buffer(struct fc_bsg_buffer
*buf
, struct request
*req
)
3682 size_t sz
= (sizeof(struct scatterlist
) * req
->nr_phys_segments
);
3684 BUG_ON(!req
->nr_phys_segments
);
3686 buf
->sg_list
= kzalloc(sz
, GFP_KERNEL
);
3689 sg_init_table(buf
->sg_list
, req
->nr_phys_segments
);
3690 buf
->sg_cnt
= blk_rq_map_sg(req
->q
, req
, buf
->sg_list
);
3691 buf
->payload_len
= blk_rq_bytes(req
);
3697 * fc_req_to_bsgjob - Allocate/create the fc_bsg_job structure for the
3699 * @shost: SCSI Host corresponding to the bsg object
3700 * @rport: (optional) FC Remote Port corresponding to the bsg object
3701 * @req: BSG request that needs a job structure
3704 fc_req_to_bsgjob(struct Scsi_Host
*shost
, struct fc_rport
*rport
,
3705 struct request
*req
)
3707 struct fc_internal
*i
= to_fc_internal(shost
->transportt
);
3708 struct request
*rsp
= req
->next_rq
;
3709 struct fc_bsg_job
*job
;
3712 BUG_ON(req
->special
);
3714 job
= kzalloc(sizeof(struct fc_bsg_job
) + i
->f
->dd_bsg_size
,
3720 * Note: this is a bit silly.
3721 * The request gets formatted as a SGIO v4 ioctl request, which
3722 * then gets reformatted as a blk request, which then gets
3723 * reformatted as a fc bsg request. And on completion, we have
3724 * to wrap return results such that SGIO v4 thinks it was a scsi
3725 * status. I hope this was all worth it.
3732 if (i
->f
->dd_bsg_size
)
3733 job
->dd_data
= (void *)&job
[1];
3734 spin_lock_init(&job
->job_lock
);
3735 job
->request
= (struct fc_bsg_request
*)req
->cmd
;
3736 job
->request_len
= req
->cmd_len
;
3737 job
->reply
= req
->sense
;
3738 job
->reply_len
= SCSI_SENSE_BUFFERSIZE
; /* Size of sense buffer
3741 ret
= fc_bsg_map_buffer(&job
->request_payload
, req
);
3743 goto failjob_rls_job
;
3745 if (rsp
&& rsp
->bio
) {
3746 ret
= fc_bsg_map_buffer(&job
->reply_payload
, rsp
);
3748 goto failjob_rls_rqst_payload
;
3750 job
->job_done
= fc_bsg_jobdone
;
3752 job
->dev
= &rport
->dev
;
3754 job
->dev
= &shost
->shost_gendev
;
3755 get_device(job
->dev
); /* take a reference for the request */
3762 failjob_rls_rqst_payload
:
3763 kfree(job
->request_payload
.sg_list
);
3770 enum fc_dispatch_result
{
3771 FC_DISPATCH_BREAK
, /* on return, q is locked, break from q loop */
3772 FC_DISPATCH_LOCKED
, /* on return, q is locked, continue on */
3773 FC_DISPATCH_UNLOCKED
, /* on return, q is unlocked, continue on */
3778 * fc_bsg_host_dispatch - process fc host bsg requests and dispatch to LLDD
3779 * @q: fc host request queue
3780 * @shost: scsi host rport attached to
3781 * @job: bsg job to be processed
3783 static enum fc_dispatch_result
3784 fc_bsg_host_dispatch(struct request_queue
*q
, struct Scsi_Host
*shost
,
3785 struct fc_bsg_job
*job
)
3787 struct fc_internal
*i
= to_fc_internal(shost
->transportt
);
3788 int cmdlen
= sizeof(uint32_t); /* start with length of msgcode */
3791 /* Validate the host command */
3792 switch (job
->request
->msgcode
) {
3793 case FC_BSG_HST_ADD_RPORT
:
3794 cmdlen
+= sizeof(struct fc_bsg_host_add_rport
);
3797 case FC_BSG_HST_DEL_RPORT
:
3798 cmdlen
+= sizeof(struct fc_bsg_host_del_rport
);
3801 case FC_BSG_HST_ELS_NOLOGIN
:
3802 cmdlen
+= sizeof(struct fc_bsg_host_els
);
3803 /* there better be a xmt and rcv payloads */
3804 if ((!job
->request_payload
.payload_len
) ||
3805 (!job
->reply_payload
.payload_len
)) {
3812 cmdlen
+= sizeof(struct fc_bsg_host_ct
);
3813 /* there better be xmt and rcv payloads */
3814 if ((!job
->request_payload
.payload_len
) ||
3815 (!job
->reply_payload
.payload_len
)) {
3821 case FC_BSG_HST_VENDOR
:
3822 cmdlen
+= sizeof(struct fc_bsg_host_vendor
);
3823 if ((shost
->hostt
->vendor_id
== 0L) ||
3824 (job
->request
->rqst_data
.h_vendor
.vendor_id
!=
3825 shost
->hostt
->vendor_id
)) {
3836 /* check if we really have all the request data needed */
3837 if (job
->request_len
< cmdlen
) {
3842 ret
= i
->f
->bsg_request(job
);
3844 return FC_DISPATCH_UNLOCKED
;
3847 /* return the errno failure code as the only status */
3848 BUG_ON(job
->reply_len
< sizeof(uint32_t));
3849 job
->reply
->reply_payload_rcv_len
= 0;
3850 job
->reply
->result
= ret
;
3851 job
->reply_len
= sizeof(uint32_t);
3852 fc_bsg_jobdone(job
);
3853 return FC_DISPATCH_UNLOCKED
;
3858 * fc_bsg_goose_queue - restart rport queue in case it was stopped
3859 * @rport: rport to be restarted
3862 fc_bsg_goose_queue(struct fc_rport
*rport
)
3868 * This get/put dance makes no sense
3870 get_device(&rport
->dev
);
3871 blk_run_queue_async(rport
->rqst_q
);
3872 put_device(&rport
->dev
);
3876 * fc_bsg_rport_dispatch - process rport bsg requests and dispatch to LLDD
3877 * @q: rport request queue
3878 * @shost: scsi host rport attached to
3879 * @rport: rport request destined to
3880 * @job: bsg job to be processed
3882 static enum fc_dispatch_result
3883 fc_bsg_rport_dispatch(struct request_queue
*q
, struct Scsi_Host
*shost
,
3884 struct fc_rport
*rport
, struct fc_bsg_job
*job
)
3886 struct fc_internal
*i
= to_fc_internal(shost
->transportt
);
3887 int cmdlen
= sizeof(uint32_t); /* start with length of msgcode */
3890 /* Validate the rport command */
3891 switch (job
->request
->msgcode
) {
3892 case FC_BSG_RPT_ELS
:
3893 cmdlen
+= sizeof(struct fc_bsg_rport_els
);
3897 cmdlen
+= sizeof(struct fc_bsg_rport_ct
);
3899 /* there better be xmt and rcv payloads */
3900 if ((!job
->request_payload
.payload_len
) ||
3901 (!job
->reply_payload
.payload_len
)) {
3903 goto fail_rport_msg
;
3908 goto fail_rport_msg
;
3911 /* check if we really have all the request data needed */
3912 if (job
->request_len
< cmdlen
) {
3914 goto fail_rport_msg
;
3917 ret
= i
->f
->bsg_request(job
);
3919 return FC_DISPATCH_UNLOCKED
;
3922 /* return the errno failure code as the only status */
3923 BUG_ON(job
->reply_len
< sizeof(uint32_t));
3924 job
->reply
->reply_payload_rcv_len
= 0;
3925 job
->reply
->result
= ret
;
3926 job
->reply_len
= sizeof(uint32_t);
3927 fc_bsg_jobdone(job
);
3928 return FC_DISPATCH_UNLOCKED
;
3933 * fc_bsg_request_handler - generic handler for bsg requests
3934 * @q: request queue to manage
3935 * @shost: Scsi_Host related to the bsg object
3936 * @rport: FC remote port related to the bsg object (optional)
3937 * @dev: device structure for bsg object
3940 fc_bsg_request_handler(struct request_queue
*q
, struct Scsi_Host
*shost
,
3941 struct fc_rport
*rport
, struct device
*dev
)
3943 struct request
*req
;
3944 struct fc_bsg_job
*job
;
3945 enum fc_dispatch_result ret
;
3947 if (!get_device(dev
))
3951 if (rport
&& (rport
->port_state
== FC_PORTSTATE_BLOCKED
) &&
3952 !(rport
->flags
& FC_RPORT_FAST_FAIL_TIMEDOUT
))
3955 req
= blk_fetch_request(q
);
3959 if (rport
&& (rport
->port_state
!= FC_PORTSTATE_ONLINE
)) {
3960 req
->errors
= -ENXIO
;
3961 spin_unlock_irq(q
->queue_lock
);
3962 blk_end_request_all(req
, -ENXIO
);
3963 spin_lock_irq(q
->queue_lock
);
3967 spin_unlock_irq(q
->queue_lock
);
3969 ret
= fc_req_to_bsgjob(shost
, rport
, req
);
3972 blk_end_request_all(req
, ret
);
3973 spin_lock_irq(q
->queue_lock
);
3979 /* check if we have the msgcode value at least */
3980 if (job
->request_len
< sizeof(uint32_t)) {
3981 BUG_ON(job
->reply_len
< sizeof(uint32_t));
3982 job
->reply
->reply_payload_rcv_len
= 0;
3983 job
->reply
->result
= -ENOMSG
;
3984 job
->reply_len
= sizeof(uint32_t);
3985 fc_bsg_jobdone(job
);
3986 spin_lock_irq(q
->queue_lock
);
3990 /* the dispatch routines will unlock the queue_lock */
3992 ret
= fc_bsg_rport_dispatch(q
, shost
, rport
, job
);
3994 ret
= fc_bsg_host_dispatch(q
, shost
, job
);
3996 /* did dispatcher hit state that can't process any more */
3997 if (ret
== FC_DISPATCH_BREAK
)
4000 /* did dispatcher had released the lock */
4001 if (ret
== FC_DISPATCH_UNLOCKED
)
4002 spin_lock_irq(q
->queue_lock
);
4005 spin_unlock_irq(q
->queue_lock
);
4007 spin_lock_irq(q
->queue_lock
);
4012 * fc_bsg_host_handler - handler for bsg requests for a fc host
4013 * @q: fc host request queue
4016 fc_bsg_host_handler(struct request_queue
*q
)
4018 struct Scsi_Host
*shost
= q
->queuedata
;
4020 fc_bsg_request_handler(q
, shost
, NULL
, &shost
->shost_gendev
);
4025 * fc_bsg_rport_handler - handler for bsg requests for a fc rport
4026 * @q: rport request queue
4029 fc_bsg_rport_handler(struct request_queue
*q
)
4031 struct fc_rport
*rport
= q
->queuedata
;
4032 struct Scsi_Host
*shost
= rport_to_shost(rport
);
4034 fc_bsg_request_handler(q
, shost
, rport
, &rport
->dev
);
4039 * fc_bsg_hostadd - Create and add the bsg hooks so we can receive requests
4040 * @shost: shost for fc_host
4041 * @fc_host: fc_host adding the structures to
4044 fc_bsg_hostadd(struct Scsi_Host
*shost
, struct fc_host_attrs
*fc_host
)
4046 struct device
*dev
= &shost
->shost_gendev
;
4047 struct fc_internal
*i
= to_fc_internal(shost
->transportt
);
4048 struct request_queue
*q
;
4052 fc_host
->rqst_q
= NULL
;
4054 if (!i
->f
->bsg_request
)
4057 snprintf(bsg_name
, sizeof(bsg_name
),
4058 "fc_host%d", shost
->host_no
);
4060 q
= __scsi_alloc_queue(shost
, fc_bsg_host_handler
);
4062 printk(KERN_ERR
"fc_host%d: bsg interface failed to "
4063 "initialize - no request queue\n",
4068 q
->queuedata
= shost
;
4069 queue_flag_set_unlocked(QUEUE_FLAG_BIDI
, q
);
4070 blk_queue_softirq_done(q
, fc_bsg_softirq_done
);
4071 blk_queue_rq_timed_out(q
, fc_bsg_job_timeout
);
4072 blk_queue_rq_timeout(q
, FC_DEFAULT_BSG_TIMEOUT
);
4074 err
= bsg_register_queue(q
, dev
, bsg_name
, NULL
);
4076 printk(KERN_ERR
"fc_host%d: bsg interface failed to "
4077 "initialize - register queue\n",
4079 blk_cleanup_queue(q
);
4083 fc_host
->rqst_q
= q
;
4089 * fc_bsg_rportadd - Create and add the bsg hooks so we can receive requests
4090 * @shost: shost that rport is attached to
4091 * @rport: rport that the bsg hooks are being attached to
4094 fc_bsg_rportadd(struct Scsi_Host
*shost
, struct fc_rport
*rport
)
4096 struct device
*dev
= &rport
->dev
;
4097 struct fc_internal
*i
= to_fc_internal(shost
->transportt
);
4098 struct request_queue
*q
;
4101 rport
->rqst_q
= NULL
;
4103 if (!i
->f
->bsg_request
)
4106 q
= __scsi_alloc_queue(shost
, fc_bsg_rport_handler
);
4108 printk(KERN_ERR
"%s: bsg interface failed to "
4109 "initialize - no request queue\n",
4114 q
->queuedata
= rport
;
4115 queue_flag_set_unlocked(QUEUE_FLAG_BIDI
, q
);
4116 blk_queue_softirq_done(q
, fc_bsg_softirq_done
);
4117 blk_queue_rq_timed_out(q
, fc_bsg_job_timeout
);
4118 blk_queue_rq_timeout(q
, BLK_DEFAULT_SG_TIMEOUT
);
4120 err
= bsg_register_queue(q
, dev
, NULL
, NULL
);
4122 printk(KERN_ERR
"%s: bsg interface failed to "
4123 "initialize - register queue\n",
4125 blk_cleanup_queue(q
);
4135 * fc_bsg_remove - Deletes the bsg hooks on fchosts/rports
4136 * @q: the request_queue that is to be torn down.
4139 * Before unregistering the queue empty any requests that are blocked
4144 fc_bsg_remove(struct request_queue
*q
)
4147 bsg_unregister_queue(q
);
4148 blk_cleanup_queue(q
);
4153 /* Original Author: Martin Hicks */
4154 MODULE_AUTHOR("James Smart");
4155 MODULE_DESCRIPTION("FC Transport Attributes");
4156 MODULE_LICENSE("GPL");
4158 module_init(fc_transport_init
);
4159 module_exit(fc_transport_exit
);