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 <linux/bsg-lib.h>
34 #include <scsi/scsi_device.h>
35 #include <scsi/scsi_host.h>
36 #include <scsi/scsi_transport.h>
37 #include <scsi/scsi_transport_fc.h>
38 #include <scsi/scsi_cmnd.h>
39 #include <net/netlink.h>
40 #include <scsi/scsi_netlink_fc.h>
41 #include <scsi/scsi_bsg_fc.h>
42 #include "scsi_priv.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_20GBIT
, "20 Gbit" },
266 { FC_PORTSPEED_40GBIT
, "40 Gbit" },
267 { FC_PORTSPEED_50GBIT
, "50 Gbit" },
268 { FC_PORTSPEED_100GBIT
, "100 Gbit" },
269 { FC_PORTSPEED_25GBIT
, "25 Gbit" },
270 { FC_PORTSPEED_NOT_NEGOTIATED
, "Not Negotiated" },
272 fc_bitfield_name_search(port_speed
, fc_port_speed_names
)
276 show_fc_fc4s (char *buf
, u8
*fc4_list
)
280 for (i
= 0; i
< FC_FC4_LIST_SIZE
; i
++, fc4_list
++)
281 len
+= sprintf(buf
+ len
, "0x%02x ", *fc4_list
);
282 len
+= sprintf(buf
+ len
, "\n");
287 /* Convert FC_PORT_ROLE bit values to ascii string name */
288 static const struct {
291 } fc_port_role_names
[] = {
292 { FC_PORT_ROLE_FCP_TARGET
, "FCP Target" },
293 { FC_PORT_ROLE_FCP_INITIATOR
, "FCP Initiator" },
294 { FC_PORT_ROLE_IP_PORT
, "IP Port" },
295 { FC_PORT_ROLE_FCP_DUMMY_INITIATOR
, "FCP Dummy Initiator" },
297 fc_bitfield_name_search(port_roles
, fc_port_role_names
)
300 * Define roles that are specific to port_id. Values are relative to ROLE_MASK.
302 #define FC_WELLKNOWN_PORTID_MASK 0xfffff0
303 #define FC_WELLKNOWN_ROLE_MASK 0x00000f
304 #define FC_FPORT_PORTID 0x00000e
305 #define FC_FABCTLR_PORTID 0x00000d
306 #define FC_DIRSRVR_PORTID 0x00000c
307 #define FC_TIMESRVR_PORTID 0x00000b
308 #define FC_MGMTSRVR_PORTID 0x00000a
311 static void fc_timeout_deleted_rport(struct work_struct
*work
);
312 static void fc_timeout_fail_rport_io(struct work_struct
*work
);
313 static void fc_scsi_scan_rport(struct work_struct
*work
);
316 * Attribute counts pre object type...
317 * Increase these values if you add attributes
319 #define FC_STARGET_NUM_ATTRS 3
320 #define FC_RPORT_NUM_ATTRS 10
321 #define FC_VPORT_NUM_ATTRS 9
322 #define FC_HOST_NUM_ATTRS 29
325 struct scsi_transport_template t
;
326 struct fc_function_template
*f
;
329 * For attributes : each object has :
330 * An array of the actual attributes structures
331 * An array of null-terminated pointers to the attribute
332 * structures - used for mid-layer interaction.
334 * The attribute containers for the starget and host are are
335 * part of the midlayer. As the remote port is specific to the
336 * fc transport, we must provide the attribute container.
338 struct device_attribute private_starget_attrs
[
339 FC_STARGET_NUM_ATTRS
];
340 struct device_attribute
*starget_attrs
[FC_STARGET_NUM_ATTRS
+ 1];
342 struct device_attribute private_host_attrs
[FC_HOST_NUM_ATTRS
];
343 struct device_attribute
*host_attrs
[FC_HOST_NUM_ATTRS
+ 1];
345 struct transport_container rport_attr_cont
;
346 struct device_attribute private_rport_attrs
[FC_RPORT_NUM_ATTRS
];
347 struct device_attribute
*rport_attrs
[FC_RPORT_NUM_ATTRS
+ 1];
349 struct transport_container vport_attr_cont
;
350 struct device_attribute private_vport_attrs
[FC_VPORT_NUM_ATTRS
];
351 struct device_attribute
*vport_attrs
[FC_VPORT_NUM_ATTRS
+ 1];
354 #define to_fc_internal(tmpl) container_of(tmpl, struct fc_internal, t)
356 static int fc_target_setup(struct transport_container
*tc
, struct device
*dev
,
359 struct scsi_target
*starget
= to_scsi_target(dev
);
360 struct fc_rport
*rport
= starget_to_rport(starget
);
363 * if parent is remote port, use values from remote port.
364 * Otherwise, this host uses the fc_transport, but not the
365 * remote port interface. As such, initialize to known non-values.
368 fc_starget_node_name(starget
) = rport
->node_name
;
369 fc_starget_port_name(starget
) = rport
->port_name
;
370 fc_starget_port_id(starget
) = rport
->port_id
;
372 fc_starget_node_name(starget
) = -1;
373 fc_starget_port_name(starget
) = -1;
374 fc_starget_port_id(starget
) = -1;
380 static DECLARE_TRANSPORT_CLASS(fc_transport_class
,
386 static int fc_host_setup(struct transport_container
*tc
, struct device
*dev
,
389 struct Scsi_Host
*shost
= dev_to_shost(dev
);
390 struct fc_host_attrs
*fc_host
= shost_to_fc_host(shost
);
393 * Set default values easily detected by the midlayer as
394 * failure cases. The scsi lldd is responsible for initializing
395 * all transport attributes to valid values per host.
397 fc_host
->node_name
= -1;
398 fc_host
->port_name
= -1;
399 fc_host
->permanent_port_name
= -1;
400 fc_host
->supported_classes
= FC_COS_UNSPECIFIED
;
401 memset(fc_host
->supported_fc4s
, 0,
402 sizeof(fc_host
->supported_fc4s
));
403 fc_host
->supported_speeds
= FC_PORTSPEED_UNKNOWN
;
404 fc_host
->maxframe_size
= -1;
405 fc_host
->max_npiv_vports
= 0;
406 memset(fc_host
->serial_number
, 0,
407 sizeof(fc_host
->serial_number
));
408 memset(fc_host
->manufacturer
, 0,
409 sizeof(fc_host
->manufacturer
));
410 memset(fc_host
->model
, 0,
411 sizeof(fc_host
->model
));
412 memset(fc_host
->model_description
, 0,
413 sizeof(fc_host
->model_description
));
414 memset(fc_host
->hardware_version
, 0,
415 sizeof(fc_host
->hardware_version
));
416 memset(fc_host
->driver_version
, 0,
417 sizeof(fc_host
->driver_version
));
418 memset(fc_host
->firmware_version
, 0,
419 sizeof(fc_host
->firmware_version
));
420 memset(fc_host
->optionrom_version
, 0,
421 sizeof(fc_host
->optionrom_version
));
423 fc_host
->port_id
= -1;
424 fc_host
->port_type
= FC_PORTTYPE_UNKNOWN
;
425 fc_host
->port_state
= FC_PORTSTATE_UNKNOWN
;
426 memset(fc_host
->active_fc4s
, 0,
427 sizeof(fc_host
->active_fc4s
));
428 fc_host
->speed
= FC_PORTSPEED_UNKNOWN
;
429 fc_host
->fabric_name
= -1;
430 memset(fc_host
->symbolic_name
, 0, sizeof(fc_host
->symbolic_name
));
431 memset(fc_host
->system_hostname
, 0, sizeof(fc_host
->system_hostname
));
433 fc_host
->tgtid_bind_type
= FC_TGTID_BIND_BY_WWPN
;
435 INIT_LIST_HEAD(&fc_host
->rports
);
436 INIT_LIST_HEAD(&fc_host
->rport_bindings
);
437 INIT_LIST_HEAD(&fc_host
->vports
);
438 fc_host
->next_rport_number
= 0;
439 fc_host
->next_target_id
= 0;
440 fc_host
->next_vport_number
= 0;
441 fc_host
->npiv_vports_inuse
= 0;
443 snprintf(fc_host
->work_q_name
, sizeof(fc_host
->work_q_name
),
444 "fc_wq_%d", shost
->host_no
);
445 fc_host
->work_q
= alloc_workqueue("%s", 0, 0, fc_host
->work_q_name
);
446 if (!fc_host
->work_q
)
449 fc_host
->dev_loss_tmo
= fc_dev_loss_tmo
;
450 snprintf(fc_host
->devloss_work_q_name
,
451 sizeof(fc_host
->devloss_work_q_name
),
452 "fc_dl_%d", shost
->host_no
);
453 fc_host
->devloss_work_q
= alloc_workqueue("%s", 0, 0,
454 fc_host
->devloss_work_q_name
);
455 if (!fc_host
->devloss_work_q
) {
456 destroy_workqueue(fc_host
->work_q
);
457 fc_host
->work_q
= NULL
;
461 fc_bsg_hostadd(shost
, fc_host
);
462 /* ignore any bsg add error - we just can't do sgio */
467 static int fc_host_remove(struct transport_container
*tc
, struct device
*dev
,
470 struct Scsi_Host
*shost
= dev_to_shost(dev
);
471 struct fc_host_attrs
*fc_host
= shost_to_fc_host(shost
);
473 fc_bsg_remove(fc_host
->rqst_q
);
477 static DECLARE_TRANSPORT_CLASS(fc_host_class
,
484 * Setup and Remove actions for remote ports are handled
485 * in the service functions below.
487 static DECLARE_TRANSPORT_CLASS(fc_rport_class
,
494 * Setup and Remove actions for virtual ports are handled
495 * in the service functions below.
497 static DECLARE_TRANSPORT_CLASS(fc_vport_class
,
504 * Netlink Infrastructure
507 static atomic_t fc_event_seq
;
510 * fc_get_event_number - Obtain the next sequential FC event number
513 * We could have inlined this, but it would have required fc_event_seq to
514 * be exposed. For now, live with the subroutine call.
515 * Atomic used to avoid lock/unlock...
518 fc_get_event_number(void)
520 return atomic_add_return(1, &fc_event_seq
);
522 EXPORT_SYMBOL(fc_get_event_number
);
526 * fc_host_post_event - called to post an even on an fc_host.
527 * @shost: host the event occurred on
528 * @event_number: fc event number obtained from get_fc_event_number()
529 * @event_code: fc_host event being posted
530 * @event_data: 32bits of data for the event being posted
533 * This routine assumes no locks are held on entry.
536 fc_host_post_event(struct Scsi_Host
*shost
, u32 event_number
,
537 enum fc_host_event_code event_code
, u32 event_data
)
540 struct nlmsghdr
*nlh
;
541 struct fc_nl_event
*event
;
551 len
= FC_NL_MSGALIGN(sizeof(*event
));
553 skb
= nlmsg_new(len
, GFP_KERNEL
);
559 nlh
= nlmsg_put(skb
, 0, 0, SCSI_TRANSPORT_MSG
, len
, 0);
564 event
= nlmsg_data(nlh
);
566 INIT_SCSI_NL_HDR(&event
->snlh
, SCSI_NL_TRANSPORT_FC
,
567 FC_NL_ASYNC_EVENT
, len
);
568 event
->seconds
= get_seconds();
569 event
->vendor_id
= 0;
570 event
->host_no
= shost
->host_no
;
571 event
->event_datalen
= sizeof(u32
); /* bytes */
572 event
->event_num
= event_number
;
573 event
->event_code
= event_code
;
574 event
->event_data
= event_data
;
576 nlmsg_multicast(scsi_nl_sock
, skb
, 0, SCSI_NL_GRP_FC_EVENTS
,
583 name
= get_fc_host_event_code_name(event_code
);
585 "%s: Dropped Event : host %d %s data 0x%08x - err %d\n",
586 __func__
, shost
->host_no
,
587 (name
) ? name
: "<unknown>", event_data
, err
);
590 EXPORT_SYMBOL(fc_host_post_event
);
594 * fc_host_post_vendor_event - called to post a vendor unique event on an fc_host
595 * @shost: host the event occurred on
596 * @event_number: fc event number obtained from get_fc_event_number()
597 * @data_len: amount, in bytes, of vendor unique data
598 * @data_buf: pointer to vendor unique data
599 * @vendor_id: Vendor id
602 * This routine assumes no locks are held on entry.
605 fc_host_post_vendor_event(struct Scsi_Host
*shost
, u32 event_number
,
606 u32 data_len
, char * data_buf
, u64 vendor_id
)
609 struct nlmsghdr
*nlh
;
610 struct fc_nl_event
*event
;
616 goto send_vendor_fail
;
619 len
= FC_NL_MSGALIGN(sizeof(*event
) + data_len
);
621 skb
= nlmsg_new(len
, GFP_KERNEL
);
624 goto send_vendor_fail
;
627 nlh
= nlmsg_put(skb
, 0, 0, SCSI_TRANSPORT_MSG
, len
, 0);
630 goto send_vendor_fail_skb
;
632 event
= nlmsg_data(nlh
);
634 INIT_SCSI_NL_HDR(&event
->snlh
, SCSI_NL_TRANSPORT_FC
,
635 FC_NL_ASYNC_EVENT
, len
);
636 event
->seconds
= get_seconds();
637 event
->vendor_id
= vendor_id
;
638 event
->host_no
= shost
->host_no
;
639 event
->event_datalen
= data_len
; /* bytes */
640 event
->event_num
= event_number
;
641 event
->event_code
= FCH_EVT_VENDOR_UNIQUE
;
642 memcpy(&event
->event_data
, data_buf
, data_len
);
644 nlmsg_multicast(scsi_nl_sock
, skb
, 0, SCSI_NL_GRP_FC_EVENTS
,
648 send_vendor_fail_skb
:
652 "%s: Dropped Event : host %d vendor_unique - err %d\n",
653 __func__
, shost
->host_no
, err
);
656 EXPORT_SYMBOL(fc_host_post_vendor_event
);
660 static __init
int fc_transport_init(void)
664 atomic_set(&fc_event_seq
, 0);
666 error
= transport_class_register(&fc_host_class
);
669 error
= transport_class_register(&fc_vport_class
);
671 goto unreg_host_class
;
672 error
= transport_class_register(&fc_rport_class
);
674 goto unreg_vport_class
;
675 error
= transport_class_register(&fc_transport_class
);
677 goto unreg_rport_class
;
681 transport_class_unregister(&fc_rport_class
);
683 transport_class_unregister(&fc_vport_class
);
685 transport_class_unregister(&fc_host_class
);
689 static void __exit
fc_transport_exit(void)
691 transport_class_unregister(&fc_transport_class
);
692 transport_class_unregister(&fc_rport_class
);
693 transport_class_unregister(&fc_host_class
);
694 transport_class_unregister(&fc_vport_class
);
698 * FC Remote Port Attribute Management
701 #define fc_rport_show_function(field, format_string, sz, cast) \
703 show_fc_rport_##field (struct device *dev, \
704 struct device_attribute *attr, char *buf) \
706 struct fc_rport *rport = transport_class_to_rport(dev); \
707 struct Scsi_Host *shost = rport_to_shost(rport); \
708 struct fc_internal *i = to_fc_internal(shost->transportt); \
709 if ((i->f->get_rport_##field) && \
710 !((rport->port_state == FC_PORTSTATE_BLOCKED) || \
711 (rport->port_state == FC_PORTSTATE_DELETED) || \
712 (rport->port_state == FC_PORTSTATE_NOTPRESENT))) \
713 i->f->get_rport_##field(rport); \
714 return snprintf(buf, sz, format_string, cast rport->field); \
717 #define fc_rport_store_function(field) \
719 store_fc_rport_##field(struct device *dev, \
720 struct device_attribute *attr, \
721 const char *buf, size_t count) \
724 struct fc_rport *rport = transport_class_to_rport(dev); \
725 struct Scsi_Host *shost = rport_to_shost(rport); \
726 struct fc_internal *i = to_fc_internal(shost->transportt); \
728 if ((rport->port_state == FC_PORTSTATE_BLOCKED) || \
729 (rport->port_state == FC_PORTSTATE_DELETED) || \
730 (rport->port_state == FC_PORTSTATE_NOTPRESENT)) \
732 val = simple_strtoul(buf, &cp, 0); \
733 if (*cp && (*cp != '\n')) \
735 i->f->set_rport_##field(rport, val); \
739 #define fc_rport_rd_attr(field, format_string, sz) \
740 fc_rport_show_function(field, format_string, sz, ) \
741 static FC_DEVICE_ATTR(rport, field, S_IRUGO, \
742 show_fc_rport_##field, NULL)
744 #define fc_rport_rd_attr_cast(field, format_string, sz, cast) \
745 fc_rport_show_function(field, format_string, sz, (cast)) \
746 static FC_DEVICE_ATTR(rport, field, S_IRUGO, \
747 show_fc_rport_##field, NULL)
749 #define fc_rport_rw_attr(field, format_string, sz) \
750 fc_rport_show_function(field, format_string, sz, ) \
751 fc_rport_store_function(field) \
752 static FC_DEVICE_ATTR(rport, field, S_IRUGO | S_IWUSR, \
753 show_fc_rport_##field, \
754 store_fc_rport_##field)
757 #define fc_private_rport_show_function(field, format_string, sz, cast) \
759 show_fc_rport_##field (struct device *dev, \
760 struct device_attribute *attr, char *buf) \
762 struct fc_rport *rport = transport_class_to_rport(dev); \
763 return snprintf(buf, sz, format_string, cast rport->field); \
766 #define fc_private_rport_rd_attr(field, format_string, sz) \
767 fc_private_rport_show_function(field, format_string, sz, ) \
768 static FC_DEVICE_ATTR(rport, field, S_IRUGO, \
769 show_fc_rport_##field, NULL)
771 #define fc_private_rport_rd_attr_cast(field, format_string, sz, cast) \
772 fc_private_rport_show_function(field, format_string, sz, (cast)) \
773 static FC_DEVICE_ATTR(rport, field, S_IRUGO, \
774 show_fc_rport_##field, NULL)
777 #define fc_private_rport_rd_enum_attr(title, maxlen) \
779 show_fc_rport_##title (struct device *dev, \
780 struct device_attribute *attr, char *buf) \
782 struct fc_rport *rport = transport_class_to_rport(dev); \
784 name = get_fc_##title##_name(rport->title); \
787 return snprintf(buf, maxlen, "%s\n", name); \
789 static FC_DEVICE_ATTR(rport, title, S_IRUGO, \
790 show_fc_rport_##title, NULL)
793 #define SETUP_RPORT_ATTRIBUTE_RD(field) \
794 i->private_rport_attrs[count] = device_attr_rport_##field; \
795 i->private_rport_attrs[count].attr.mode = S_IRUGO; \
796 i->private_rport_attrs[count].store = NULL; \
797 i->rport_attrs[count] = &i->private_rport_attrs[count]; \
798 if (i->f->show_rport_##field) \
801 #define SETUP_PRIVATE_RPORT_ATTRIBUTE_RD(field) \
802 i->private_rport_attrs[count] = device_attr_rport_##field; \
803 i->private_rport_attrs[count].attr.mode = S_IRUGO; \
804 i->private_rport_attrs[count].store = NULL; \
805 i->rport_attrs[count] = &i->private_rport_attrs[count]; \
808 #define SETUP_RPORT_ATTRIBUTE_RW(field) \
809 i->private_rport_attrs[count] = device_attr_rport_##field; \
810 if (!i->f->set_rport_##field) { \
811 i->private_rport_attrs[count].attr.mode = S_IRUGO; \
812 i->private_rport_attrs[count].store = NULL; \
814 i->rport_attrs[count] = &i->private_rport_attrs[count]; \
815 if (i->f->show_rport_##field) \
818 #define SETUP_PRIVATE_RPORT_ATTRIBUTE_RW(field) \
820 i->private_rport_attrs[count] = device_attr_rport_##field; \
821 i->rport_attrs[count] = &i->private_rport_attrs[count]; \
826 /* The FC Transport Remote Port Attributes: */
828 /* Fixed Remote Port Attributes */
830 fc_private_rport_rd_attr(maxframe_size
, "%u bytes\n", 20);
833 show_fc_rport_supported_classes (struct device
*dev
,
834 struct device_attribute
*attr
, char *buf
)
836 struct fc_rport
*rport
= transport_class_to_rport(dev
);
837 if (rport
->supported_classes
== FC_COS_UNSPECIFIED
)
838 return snprintf(buf
, 20, "unspecified\n");
839 return get_fc_cos_names(rport
->supported_classes
, buf
);
841 static FC_DEVICE_ATTR(rport
, supported_classes
, S_IRUGO
,
842 show_fc_rport_supported_classes
, NULL
);
844 /* Dynamic Remote Port Attributes */
847 * dev_loss_tmo attribute
849 static int fc_str_to_dev_loss(const char *buf
, unsigned long *val
)
853 *val
= simple_strtoul(buf
, &cp
, 0);
854 if (*cp
&& (*cp
!= '\n'))
857 * Check for overflow; dev_loss_tmo is u32
865 static int fc_rport_set_dev_loss_tmo(struct fc_rport
*rport
,
868 struct Scsi_Host
*shost
= rport_to_shost(rport
);
869 struct fc_internal
*i
= to_fc_internal(shost
->transportt
);
871 if ((rport
->port_state
== FC_PORTSTATE_BLOCKED
) ||
872 (rport
->port_state
== FC_PORTSTATE_DELETED
) ||
873 (rport
->port_state
== FC_PORTSTATE_NOTPRESENT
))
876 * Check for overflow; dev_loss_tmo is u32
882 * If fast_io_fail is off we have to cap
883 * dev_loss_tmo at SCSI_DEVICE_BLOCK_MAX_TIMEOUT
885 if (rport
->fast_io_fail_tmo
== -1 &&
886 val
> SCSI_DEVICE_BLOCK_MAX_TIMEOUT
)
889 i
->f
->set_rport_dev_loss_tmo(rport
, val
);
893 fc_rport_show_function(dev_loss_tmo
, "%d\n", 20, )
895 store_fc_rport_dev_loss_tmo(struct device
*dev
, struct device_attribute
*attr
,
896 const char *buf
, size_t count
)
898 struct fc_rport
*rport
= transport_class_to_rport(dev
);
902 rc
= fc_str_to_dev_loss(buf
, &val
);
906 rc
= fc_rport_set_dev_loss_tmo(rport
, val
);
911 static FC_DEVICE_ATTR(rport
, dev_loss_tmo
, S_IRUGO
| S_IWUSR
,
912 show_fc_rport_dev_loss_tmo
, store_fc_rport_dev_loss_tmo
);
915 /* Private Remote Port Attributes */
917 fc_private_rport_rd_attr_cast(node_name
, "0x%llx\n", 20, unsigned long long);
918 fc_private_rport_rd_attr_cast(port_name
, "0x%llx\n", 20, unsigned long long);
919 fc_private_rport_rd_attr(port_id
, "0x%06x\n", 20);
922 show_fc_rport_roles (struct device
*dev
, struct device_attribute
*attr
,
925 struct fc_rport
*rport
= transport_class_to_rport(dev
);
927 /* identify any roles that are port_id specific */
928 if ((rport
->port_id
!= -1) &&
929 (rport
->port_id
& FC_WELLKNOWN_PORTID_MASK
) ==
930 FC_WELLKNOWN_PORTID_MASK
) {
931 switch (rport
->port_id
& FC_WELLKNOWN_ROLE_MASK
) {
932 case FC_FPORT_PORTID
:
933 return snprintf(buf
, 30, "Fabric Port\n");
934 case FC_FABCTLR_PORTID
:
935 return snprintf(buf
, 30, "Fabric Controller\n");
936 case FC_DIRSRVR_PORTID
:
937 return snprintf(buf
, 30, "Directory Server\n");
938 case FC_TIMESRVR_PORTID
:
939 return snprintf(buf
, 30, "Time Server\n");
940 case FC_MGMTSRVR_PORTID
:
941 return snprintf(buf
, 30, "Management Server\n");
943 return snprintf(buf
, 30, "Unknown Fabric Entity\n");
946 if (rport
->roles
== FC_PORT_ROLE_UNKNOWN
)
947 return snprintf(buf
, 20, "unknown\n");
948 return get_fc_port_roles_names(rport
->roles
, buf
);
951 static FC_DEVICE_ATTR(rport
, roles
, S_IRUGO
,
952 show_fc_rport_roles
, NULL
);
954 fc_private_rport_rd_enum_attr(port_state
, FC_PORTSTATE_MAX_NAMELEN
);
955 fc_private_rport_rd_attr(scsi_target_id
, "%d\n", 20);
958 * fast_io_fail_tmo attribute
961 show_fc_rport_fast_io_fail_tmo (struct device
*dev
,
962 struct device_attribute
*attr
, char *buf
)
964 struct fc_rport
*rport
= transport_class_to_rport(dev
);
966 if (rport
->fast_io_fail_tmo
== -1)
967 return snprintf(buf
, 5, "off\n");
968 return snprintf(buf
, 20, "%d\n", rport
->fast_io_fail_tmo
);
972 store_fc_rport_fast_io_fail_tmo(struct device
*dev
,
973 struct device_attribute
*attr
, const char *buf
,
978 struct fc_rport
*rport
= transport_class_to_rport(dev
);
980 if ((rport
->port_state
== FC_PORTSTATE_BLOCKED
) ||
981 (rport
->port_state
== FC_PORTSTATE_DELETED
) ||
982 (rport
->port_state
== FC_PORTSTATE_NOTPRESENT
))
984 if (strncmp(buf
, "off", 3) == 0)
985 rport
->fast_io_fail_tmo
= -1;
987 val
= simple_strtoul(buf
, &cp
, 0);
988 if ((*cp
&& (*cp
!= '\n')) || (val
< 0))
991 * Cap fast_io_fail by dev_loss_tmo or
992 * SCSI_DEVICE_BLOCK_MAX_TIMEOUT.
994 if ((val
>= rport
->dev_loss_tmo
) ||
995 (val
> SCSI_DEVICE_BLOCK_MAX_TIMEOUT
))
998 rport
->fast_io_fail_tmo
= val
;
1002 static FC_DEVICE_ATTR(rport
, fast_io_fail_tmo
, S_IRUGO
| S_IWUSR
,
1003 show_fc_rport_fast_io_fail_tmo
, store_fc_rport_fast_io_fail_tmo
);
1007 * FC SCSI Target Attribute Management
1011 * Note: in the target show function we recognize when the remote
1012 * port is in the hierarchy and do not allow the driver to get
1013 * involved in sysfs functions. The driver only gets involved if
1014 * it's the "old" style that doesn't use rports.
1016 #define fc_starget_show_function(field, format_string, sz, cast) \
1018 show_fc_starget_##field (struct device *dev, \
1019 struct device_attribute *attr, char *buf) \
1021 struct scsi_target *starget = transport_class_to_starget(dev); \
1022 struct Scsi_Host *shost = dev_to_shost(starget->dev.parent); \
1023 struct fc_internal *i = to_fc_internal(shost->transportt); \
1024 struct fc_rport *rport = starget_to_rport(starget); \
1026 fc_starget_##field(starget) = rport->field; \
1027 else if (i->f->get_starget_##field) \
1028 i->f->get_starget_##field(starget); \
1029 return snprintf(buf, sz, format_string, \
1030 cast fc_starget_##field(starget)); \
1033 #define fc_starget_rd_attr(field, format_string, sz) \
1034 fc_starget_show_function(field, format_string, sz, ) \
1035 static FC_DEVICE_ATTR(starget, field, S_IRUGO, \
1036 show_fc_starget_##field, NULL)
1038 #define fc_starget_rd_attr_cast(field, format_string, sz, cast) \
1039 fc_starget_show_function(field, format_string, sz, (cast)) \
1040 static FC_DEVICE_ATTR(starget, field, S_IRUGO, \
1041 show_fc_starget_##field, NULL)
1043 #define SETUP_STARGET_ATTRIBUTE_RD(field) \
1044 i->private_starget_attrs[count] = device_attr_starget_##field; \
1045 i->private_starget_attrs[count].attr.mode = S_IRUGO; \
1046 i->private_starget_attrs[count].store = NULL; \
1047 i->starget_attrs[count] = &i->private_starget_attrs[count]; \
1048 if (i->f->show_starget_##field) \
1051 #define SETUP_STARGET_ATTRIBUTE_RW(field) \
1052 i->private_starget_attrs[count] = device_attr_starget_##field; \
1053 if (!i->f->set_starget_##field) { \
1054 i->private_starget_attrs[count].attr.mode = S_IRUGO; \
1055 i->private_starget_attrs[count].store = NULL; \
1057 i->starget_attrs[count] = &i->private_starget_attrs[count]; \
1058 if (i->f->show_starget_##field) \
1061 /* The FC Transport SCSI Target Attributes: */
1062 fc_starget_rd_attr_cast(node_name
, "0x%llx\n", 20, unsigned long long);
1063 fc_starget_rd_attr_cast(port_name
, "0x%llx\n", 20, unsigned long long);
1064 fc_starget_rd_attr(port_id
, "0x%06x\n", 20);
1068 * FC Virtual Port Attribute Management
1071 #define fc_vport_show_function(field, format_string, sz, cast) \
1073 show_fc_vport_##field (struct device *dev, \
1074 struct device_attribute *attr, char *buf) \
1076 struct fc_vport *vport = transport_class_to_vport(dev); \
1077 struct Scsi_Host *shost = vport_to_shost(vport); \
1078 struct fc_internal *i = to_fc_internal(shost->transportt); \
1079 if ((i->f->get_vport_##field) && \
1080 !(vport->flags & (FC_VPORT_DEL | FC_VPORT_CREATING))) \
1081 i->f->get_vport_##field(vport); \
1082 return snprintf(buf, sz, format_string, cast vport->field); \
1085 #define fc_vport_store_function(field) \
1087 store_fc_vport_##field(struct device *dev, \
1088 struct device_attribute *attr, \
1089 const char *buf, size_t count) \
1092 struct fc_vport *vport = transport_class_to_vport(dev); \
1093 struct Scsi_Host *shost = vport_to_shost(vport); \
1094 struct fc_internal *i = to_fc_internal(shost->transportt); \
1096 if (vport->flags & (FC_VPORT_DEL | FC_VPORT_CREATING)) \
1098 val = simple_strtoul(buf, &cp, 0); \
1099 if (*cp && (*cp != '\n')) \
1101 i->f->set_vport_##field(vport, val); \
1105 #define fc_vport_store_str_function(field, slen) \
1107 store_fc_vport_##field(struct device *dev, \
1108 struct device_attribute *attr, \
1109 const char *buf, size_t count) \
1111 struct fc_vport *vport = transport_class_to_vport(dev); \
1112 struct Scsi_Host *shost = vport_to_shost(vport); \
1113 struct fc_internal *i = to_fc_internal(shost->transportt); \
1114 unsigned int cnt=count; \
1116 /* count may include a LF at end of string */ \
1117 if (buf[cnt-1] == '\n') \
1119 if (cnt > ((slen) - 1)) \
1121 memcpy(vport->field, buf, cnt); \
1122 i->f->set_vport_##field(vport); \
1126 #define fc_vport_rd_attr(field, format_string, sz) \
1127 fc_vport_show_function(field, format_string, sz, ) \
1128 static FC_DEVICE_ATTR(vport, field, S_IRUGO, \
1129 show_fc_vport_##field, NULL)
1131 #define fc_vport_rd_attr_cast(field, format_string, sz, cast) \
1132 fc_vport_show_function(field, format_string, sz, (cast)) \
1133 static FC_DEVICE_ATTR(vport, field, S_IRUGO, \
1134 show_fc_vport_##field, NULL)
1136 #define fc_vport_rw_attr(field, format_string, sz) \
1137 fc_vport_show_function(field, format_string, sz, ) \
1138 fc_vport_store_function(field) \
1139 static FC_DEVICE_ATTR(vport, field, S_IRUGO | S_IWUSR, \
1140 show_fc_vport_##field, \
1141 store_fc_vport_##field)
1143 #define fc_private_vport_show_function(field, format_string, sz, cast) \
1145 show_fc_vport_##field (struct device *dev, \
1146 struct device_attribute *attr, char *buf) \
1148 struct fc_vport *vport = transport_class_to_vport(dev); \
1149 return snprintf(buf, sz, format_string, cast vport->field); \
1152 #define fc_private_vport_store_u32_function(field) \
1154 store_fc_vport_##field(struct device *dev, \
1155 struct device_attribute *attr, \
1156 const char *buf, size_t count) \
1159 struct fc_vport *vport = transport_class_to_vport(dev); \
1161 if (vport->flags & (FC_VPORT_DEL | FC_VPORT_CREATING)) \
1163 val = simple_strtoul(buf, &cp, 0); \
1164 if (*cp && (*cp != '\n')) \
1166 vport->field = val; \
1171 #define fc_private_vport_rd_attr(field, format_string, sz) \
1172 fc_private_vport_show_function(field, format_string, sz, ) \
1173 static FC_DEVICE_ATTR(vport, field, S_IRUGO, \
1174 show_fc_vport_##field, NULL)
1176 #define fc_private_vport_rd_attr_cast(field, format_string, sz, cast) \
1177 fc_private_vport_show_function(field, format_string, sz, (cast)) \
1178 static FC_DEVICE_ATTR(vport, field, S_IRUGO, \
1179 show_fc_vport_##field, NULL)
1181 #define fc_private_vport_rw_u32_attr(field, format_string, sz) \
1182 fc_private_vport_show_function(field, format_string, sz, ) \
1183 fc_private_vport_store_u32_function(field) \
1184 static FC_DEVICE_ATTR(vport, field, S_IRUGO | S_IWUSR, \
1185 show_fc_vport_##field, \
1186 store_fc_vport_##field)
1189 #define fc_private_vport_rd_enum_attr(title, maxlen) \
1191 show_fc_vport_##title (struct device *dev, \
1192 struct device_attribute *attr, \
1195 struct fc_vport *vport = transport_class_to_vport(dev); \
1197 name = get_fc_##title##_name(vport->title); \
1200 return snprintf(buf, maxlen, "%s\n", name); \
1202 static FC_DEVICE_ATTR(vport, title, S_IRUGO, \
1203 show_fc_vport_##title, NULL)
1206 #define SETUP_VPORT_ATTRIBUTE_RD(field) \
1207 i->private_vport_attrs[count] = device_attr_vport_##field; \
1208 i->private_vport_attrs[count].attr.mode = S_IRUGO; \
1209 i->private_vport_attrs[count].store = NULL; \
1210 i->vport_attrs[count] = &i->private_vport_attrs[count]; \
1211 if (i->f->get_##field) \
1213 /* NOTE: Above MACRO differs: checks function not show bit */
1215 #define SETUP_PRIVATE_VPORT_ATTRIBUTE_RD(field) \
1216 i->private_vport_attrs[count] = device_attr_vport_##field; \
1217 i->private_vport_attrs[count].attr.mode = S_IRUGO; \
1218 i->private_vport_attrs[count].store = NULL; \
1219 i->vport_attrs[count] = &i->private_vport_attrs[count]; \
1222 #define SETUP_VPORT_ATTRIBUTE_WR(field) \
1223 i->private_vport_attrs[count] = device_attr_vport_##field; \
1224 i->vport_attrs[count] = &i->private_vport_attrs[count]; \
1227 /* NOTE: Above MACRO differs: checks function */
1229 #define SETUP_VPORT_ATTRIBUTE_RW(field) \
1230 i->private_vport_attrs[count] = device_attr_vport_##field; \
1231 if (!i->f->set_vport_##field) { \
1232 i->private_vport_attrs[count].attr.mode = S_IRUGO; \
1233 i->private_vport_attrs[count].store = NULL; \
1235 i->vport_attrs[count] = &i->private_vport_attrs[count]; \
1237 /* NOTE: Above MACRO differs: does not check show bit */
1239 #define SETUP_PRIVATE_VPORT_ATTRIBUTE_RW(field) \
1241 i->private_vport_attrs[count] = device_attr_vport_##field; \
1242 i->vport_attrs[count] = &i->private_vport_attrs[count]; \
1247 /* The FC Transport Virtual Port Attributes: */
1249 /* Fixed Virtual Port Attributes */
1251 /* Dynamic Virtual Port Attributes */
1253 /* Private Virtual Port Attributes */
1255 fc_private_vport_rd_enum_attr(vport_state
, FC_VPORTSTATE_MAX_NAMELEN
);
1256 fc_private_vport_rd_enum_attr(vport_last_state
, FC_VPORTSTATE_MAX_NAMELEN
);
1257 fc_private_vport_rd_attr_cast(node_name
, "0x%llx\n", 20, unsigned long long);
1258 fc_private_vport_rd_attr_cast(port_name
, "0x%llx\n", 20, unsigned long long);
1261 show_fc_vport_roles (struct device
*dev
, struct device_attribute
*attr
,
1264 struct fc_vport
*vport
= transport_class_to_vport(dev
);
1266 if (vport
->roles
== FC_PORT_ROLE_UNKNOWN
)
1267 return snprintf(buf
, 20, "unknown\n");
1268 return get_fc_port_roles_names(vport
->roles
, buf
);
1270 static FC_DEVICE_ATTR(vport
, roles
, S_IRUGO
, show_fc_vport_roles
, NULL
);
1272 fc_private_vport_rd_enum_attr(vport_type
, FC_PORTTYPE_MAX_NAMELEN
);
1274 fc_private_vport_show_function(symbolic_name
, "%s\n",
1275 FC_VPORT_SYMBOLIC_NAMELEN
+ 1, )
1276 fc_vport_store_str_function(symbolic_name
, FC_VPORT_SYMBOLIC_NAMELEN
)
1277 static FC_DEVICE_ATTR(vport
, symbolic_name
, S_IRUGO
| S_IWUSR
,
1278 show_fc_vport_symbolic_name
, store_fc_vport_symbolic_name
);
1281 store_fc_vport_delete(struct device
*dev
, struct device_attribute
*attr
,
1282 const char *buf
, size_t count
)
1284 struct fc_vport
*vport
= transport_class_to_vport(dev
);
1285 struct Scsi_Host
*shost
= vport_to_shost(vport
);
1286 unsigned long flags
;
1288 spin_lock_irqsave(shost
->host_lock
, flags
);
1289 if (vport
->flags
& (FC_VPORT_DEL
| FC_VPORT_CREATING
| FC_VPORT_DELETING
)) {
1290 spin_unlock_irqrestore(shost
->host_lock
, flags
);
1293 vport
->flags
|= FC_VPORT_DELETING
;
1294 spin_unlock_irqrestore(shost
->host_lock
, flags
);
1296 fc_queue_work(shost
, &vport
->vport_delete_work
);
1299 static FC_DEVICE_ATTR(vport
, vport_delete
, S_IWUSR
,
1300 NULL
, store_fc_vport_delete
);
1304 * Enable/Disable vport
1305 * Write "1" to disable, write "0" to enable
1308 store_fc_vport_disable(struct device
*dev
, struct device_attribute
*attr
,
1312 struct fc_vport
*vport
= transport_class_to_vport(dev
);
1313 struct Scsi_Host
*shost
= vport_to_shost(vport
);
1314 struct fc_internal
*i
= to_fc_internal(shost
->transportt
);
1317 if (vport
->flags
& (FC_VPORT_DEL
| FC_VPORT_CREATING
))
1321 if (vport
->vport_state
!= FC_VPORT_DISABLED
)
1323 } else if (*buf
== '1') {
1324 if (vport
->vport_state
== FC_VPORT_DISABLED
)
1329 stat
= i
->f
->vport_disable(vport
, ((*buf
== '0') ? false : true));
1330 return stat
? stat
: count
;
1332 static FC_DEVICE_ATTR(vport
, vport_disable
, S_IWUSR
,
1333 NULL
, store_fc_vport_disable
);
1337 * Host Attribute Management
1340 #define fc_host_show_function(field, format_string, sz, cast) \
1342 show_fc_host_##field (struct device *dev, \
1343 struct device_attribute *attr, char *buf) \
1345 struct Scsi_Host *shost = transport_class_to_shost(dev); \
1346 struct fc_internal *i = to_fc_internal(shost->transportt); \
1347 if (i->f->get_host_##field) \
1348 i->f->get_host_##field(shost); \
1349 return snprintf(buf, sz, format_string, cast fc_host_##field(shost)); \
1352 #define fc_host_store_function(field) \
1354 store_fc_host_##field(struct device *dev, \
1355 struct device_attribute *attr, \
1356 const char *buf, size_t count) \
1359 struct Scsi_Host *shost = transport_class_to_shost(dev); \
1360 struct fc_internal *i = to_fc_internal(shost->transportt); \
1363 val = simple_strtoul(buf, &cp, 0); \
1364 if (*cp && (*cp != '\n')) \
1366 i->f->set_host_##field(shost, val); \
1370 #define fc_host_store_str_function(field, slen) \
1372 store_fc_host_##field(struct device *dev, \
1373 struct device_attribute *attr, \
1374 const char *buf, size_t count) \
1376 struct Scsi_Host *shost = transport_class_to_shost(dev); \
1377 struct fc_internal *i = to_fc_internal(shost->transportt); \
1378 unsigned int cnt=count; \
1380 /* count may include a LF at end of string */ \
1381 if (buf[cnt-1] == '\n') \
1383 if (cnt > ((slen) - 1)) \
1385 memcpy(fc_host_##field(shost), buf, cnt); \
1386 i->f->set_host_##field(shost); \
1390 #define fc_host_rd_attr(field, format_string, sz) \
1391 fc_host_show_function(field, format_string, sz, ) \
1392 static FC_DEVICE_ATTR(host, field, S_IRUGO, \
1393 show_fc_host_##field, NULL)
1395 #define fc_host_rd_attr_cast(field, format_string, sz, cast) \
1396 fc_host_show_function(field, format_string, sz, (cast)) \
1397 static FC_DEVICE_ATTR(host, field, S_IRUGO, \
1398 show_fc_host_##field, NULL)
1400 #define fc_host_rw_attr(field, format_string, sz) \
1401 fc_host_show_function(field, format_string, sz, ) \
1402 fc_host_store_function(field) \
1403 static FC_DEVICE_ATTR(host, field, S_IRUGO | S_IWUSR, \
1404 show_fc_host_##field, \
1405 store_fc_host_##field)
1407 #define fc_host_rd_enum_attr(title, maxlen) \
1409 show_fc_host_##title (struct device *dev, \
1410 struct device_attribute *attr, char *buf) \
1412 struct Scsi_Host *shost = transport_class_to_shost(dev); \
1413 struct fc_internal *i = to_fc_internal(shost->transportt); \
1415 if (i->f->get_host_##title) \
1416 i->f->get_host_##title(shost); \
1417 name = get_fc_##title##_name(fc_host_##title(shost)); \
1420 return snprintf(buf, maxlen, "%s\n", name); \
1422 static FC_DEVICE_ATTR(host, title, S_IRUGO, show_fc_host_##title, NULL)
1424 #define SETUP_HOST_ATTRIBUTE_RD(field) \
1425 i->private_host_attrs[count] = device_attr_host_##field; \
1426 i->private_host_attrs[count].attr.mode = S_IRUGO; \
1427 i->private_host_attrs[count].store = NULL; \
1428 i->host_attrs[count] = &i->private_host_attrs[count]; \
1429 if (i->f->show_host_##field) \
1432 #define SETUP_HOST_ATTRIBUTE_RD_NS(field) \
1433 i->private_host_attrs[count] = device_attr_host_##field; \
1434 i->private_host_attrs[count].attr.mode = S_IRUGO; \
1435 i->private_host_attrs[count].store = NULL; \
1436 i->host_attrs[count] = &i->private_host_attrs[count]; \
1439 #define SETUP_HOST_ATTRIBUTE_RW(field) \
1440 i->private_host_attrs[count] = device_attr_host_##field; \
1441 if (!i->f->set_host_##field) { \
1442 i->private_host_attrs[count].attr.mode = S_IRUGO; \
1443 i->private_host_attrs[count].store = NULL; \
1445 i->host_attrs[count] = &i->private_host_attrs[count]; \
1446 if (i->f->show_host_##field) \
1450 #define fc_private_host_show_function(field, format_string, sz, cast) \
1452 show_fc_host_##field (struct device *dev, \
1453 struct device_attribute *attr, char *buf) \
1455 struct Scsi_Host *shost = transport_class_to_shost(dev); \
1456 return snprintf(buf, sz, format_string, cast fc_host_##field(shost)); \
1459 #define fc_private_host_rd_attr(field, format_string, sz) \
1460 fc_private_host_show_function(field, format_string, sz, ) \
1461 static FC_DEVICE_ATTR(host, field, S_IRUGO, \
1462 show_fc_host_##field, NULL)
1464 #define fc_private_host_rd_attr_cast(field, format_string, sz, cast) \
1465 fc_private_host_show_function(field, format_string, sz, (cast)) \
1466 static FC_DEVICE_ATTR(host, field, S_IRUGO, \
1467 show_fc_host_##field, NULL)
1469 #define SETUP_PRIVATE_HOST_ATTRIBUTE_RD(field) \
1470 i->private_host_attrs[count] = device_attr_host_##field; \
1471 i->private_host_attrs[count].attr.mode = S_IRUGO; \
1472 i->private_host_attrs[count].store = NULL; \
1473 i->host_attrs[count] = &i->private_host_attrs[count]; \
1476 #define SETUP_PRIVATE_HOST_ATTRIBUTE_RW(field) \
1478 i->private_host_attrs[count] = device_attr_host_##field; \
1479 i->host_attrs[count] = &i->private_host_attrs[count]; \
1484 /* Fixed Host Attributes */
1487 show_fc_host_supported_classes (struct device
*dev
,
1488 struct device_attribute
*attr
, char *buf
)
1490 struct Scsi_Host
*shost
= transport_class_to_shost(dev
);
1492 if (fc_host_supported_classes(shost
) == FC_COS_UNSPECIFIED
)
1493 return snprintf(buf
, 20, "unspecified\n");
1495 return get_fc_cos_names(fc_host_supported_classes(shost
), buf
);
1497 static FC_DEVICE_ATTR(host
, supported_classes
, S_IRUGO
,
1498 show_fc_host_supported_classes
, NULL
);
1501 show_fc_host_supported_fc4s (struct device
*dev
,
1502 struct device_attribute
*attr
, char *buf
)
1504 struct Scsi_Host
*shost
= transport_class_to_shost(dev
);
1505 return (ssize_t
)show_fc_fc4s(buf
, fc_host_supported_fc4s(shost
));
1507 static FC_DEVICE_ATTR(host
, supported_fc4s
, S_IRUGO
,
1508 show_fc_host_supported_fc4s
, NULL
);
1511 show_fc_host_supported_speeds (struct device
*dev
,
1512 struct device_attribute
*attr
, char *buf
)
1514 struct Scsi_Host
*shost
= transport_class_to_shost(dev
);
1516 if (fc_host_supported_speeds(shost
) == FC_PORTSPEED_UNKNOWN
)
1517 return snprintf(buf
, 20, "unknown\n");
1519 return get_fc_port_speed_names(fc_host_supported_speeds(shost
), buf
);
1521 static FC_DEVICE_ATTR(host
, supported_speeds
, S_IRUGO
,
1522 show_fc_host_supported_speeds
, NULL
);
1525 fc_private_host_rd_attr_cast(node_name
, "0x%llx\n", 20, unsigned long long);
1526 fc_private_host_rd_attr_cast(port_name
, "0x%llx\n", 20, unsigned long long);
1527 fc_private_host_rd_attr_cast(permanent_port_name
, "0x%llx\n", 20,
1528 unsigned long long);
1529 fc_private_host_rd_attr(maxframe_size
, "%u bytes\n", 20);
1530 fc_private_host_rd_attr(max_npiv_vports
, "%u\n", 20);
1531 fc_private_host_rd_attr(serial_number
, "%s\n", (FC_SERIAL_NUMBER_SIZE
+1));
1532 fc_private_host_rd_attr(manufacturer
, "%s\n", FC_SERIAL_NUMBER_SIZE
+ 1);
1533 fc_private_host_rd_attr(model
, "%s\n", FC_SYMBOLIC_NAME_SIZE
+ 1);
1534 fc_private_host_rd_attr(model_description
, "%s\n", FC_SYMBOLIC_NAME_SIZE
+ 1);
1535 fc_private_host_rd_attr(hardware_version
, "%s\n", FC_VERSION_STRING_SIZE
+ 1);
1536 fc_private_host_rd_attr(driver_version
, "%s\n", FC_VERSION_STRING_SIZE
+ 1);
1537 fc_private_host_rd_attr(firmware_version
, "%s\n", FC_VERSION_STRING_SIZE
+ 1);
1538 fc_private_host_rd_attr(optionrom_version
, "%s\n", FC_VERSION_STRING_SIZE
+ 1);
1541 /* Dynamic Host Attributes */
1544 show_fc_host_active_fc4s (struct device
*dev
,
1545 struct device_attribute
*attr
, char *buf
)
1547 struct Scsi_Host
*shost
= transport_class_to_shost(dev
);
1548 struct fc_internal
*i
= to_fc_internal(shost
->transportt
);
1550 if (i
->f
->get_host_active_fc4s
)
1551 i
->f
->get_host_active_fc4s(shost
);
1553 return (ssize_t
)show_fc_fc4s(buf
, fc_host_active_fc4s(shost
));
1555 static FC_DEVICE_ATTR(host
, active_fc4s
, S_IRUGO
,
1556 show_fc_host_active_fc4s
, NULL
);
1559 show_fc_host_speed (struct device
*dev
,
1560 struct device_attribute
*attr
, char *buf
)
1562 struct Scsi_Host
*shost
= transport_class_to_shost(dev
);
1563 struct fc_internal
*i
= to_fc_internal(shost
->transportt
);
1565 if (i
->f
->get_host_speed
)
1566 i
->f
->get_host_speed(shost
);
1568 if (fc_host_speed(shost
) == FC_PORTSPEED_UNKNOWN
)
1569 return snprintf(buf
, 20, "unknown\n");
1571 return get_fc_port_speed_names(fc_host_speed(shost
), buf
);
1573 static FC_DEVICE_ATTR(host
, speed
, S_IRUGO
,
1574 show_fc_host_speed
, NULL
);
1577 fc_host_rd_attr(port_id
, "0x%06x\n", 20);
1578 fc_host_rd_enum_attr(port_type
, FC_PORTTYPE_MAX_NAMELEN
);
1579 fc_host_rd_enum_attr(port_state
, FC_PORTSTATE_MAX_NAMELEN
);
1580 fc_host_rd_attr_cast(fabric_name
, "0x%llx\n", 20, unsigned long long);
1581 fc_host_rd_attr(symbolic_name
, "%s\n", FC_SYMBOLIC_NAME_SIZE
+ 1);
1583 fc_private_host_show_function(system_hostname
, "%s\n",
1584 FC_SYMBOLIC_NAME_SIZE
+ 1, )
1585 fc_host_store_str_function(system_hostname
, FC_SYMBOLIC_NAME_SIZE
)
1586 static FC_DEVICE_ATTR(host
, system_hostname
, S_IRUGO
| S_IWUSR
,
1587 show_fc_host_system_hostname
, store_fc_host_system_hostname
);
1590 /* Private Host Attributes */
1593 show_fc_private_host_tgtid_bind_type(struct device
*dev
,
1594 struct device_attribute
*attr
, char *buf
)
1596 struct Scsi_Host
*shost
= transport_class_to_shost(dev
);
1599 name
= get_fc_tgtid_bind_type_name(fc_host_tgtid_bind_type(shost
));
1602 return snprintf(buf
, FC_BINDTYPE_MAX_NAMELEN
, "%s\n", name
);
1605 #define get_list_head_entry(pos, head, member) \
1606 pos = list_entry((head)->next, typeof(*pos), member)
1609 store_fc_private_host_tgtid_bind_type(struct device
*dev
,
1610 struct device_attribute
*attr
, const char *buf
, size_t count
)
1612 struct Scsi_Host
*shost
= transport_class_to_shost(dev
);
1613 struct fc_rport
*rport
;
1614 enum fc_tgtid_binding_type val
;
1615 unsigned long flags
;
1617 if (get_fc_tgtid_bind_type_match(buf
, &val
))
1620 /* if changing bind type, purge all unused consistent bindings */
1621 if (val
!= fc_host_tgtid_bind_type(shost
)) {
1622 spin_lock_irqsave(shost
->host_lock
, flags
);
1623 while (!list_empty(&fc_host_rport_bindings(shost
))) {
1624 get_list_head_entry(rport
,
1625 &fc_host_rport_bindings(shost
), peers
);
1626 list_del(&rport
->peers
);
1627 rport
->port_state
= FC_PORTSTATE_DELETED
;
1628 fc_queue_work(shost
, &rport
->rport_delete_work
);
1630 spin_unlock_irqrestore(shost
->host_lock
, flags
);
1633 fc_host_tgtid_bind_type(shost
) = val
;
1637 static FC_DEVICE_ATTR(host
, tgtid_bind_type
, S_IRUGO
| S_IWUSR
,
1638 show_fc_private_host_tgtid_bind_type
,
1639 store_fc_private_host_tgtid_bind_type
);
1642 store_fc_private_host_issue_lip(struct device
*dev
,
1643 struct device_attribute
*attr
, const char *buf
, size_t count
)
1645 struct Scsi_Host
*shost
= transport_class_to_shost(dev
);
1646 struct fc_internal
*i
= to_fc_internal(shost
->transportt
);
1649 /* ignore any data value written to the attribute */
1650 if (i
->f
->issue_fc_host_lip
) {
1651 ret
= i
->f
->issue_fc_host_lip(shost
);
1652 return ret
? ret
: count
;
1658 static FC_DEVICE_ATTR(host
, issue_lip
, S_IWUSR
, NULL
,
1659 store_fc_private_host_issue_lip
);
1662 store_fc_private_host_dev_loss_tmo(struct device
*dev
,
1663 struct device_attribute
*attr
,
1664 const char *buf
, size_t count
)
1666 struct Scsi_Host
*shost
= transport_class_to_shost(dev
);
1667 struct fc_host_attrs
*fc_host
= shost_to_fc_host(shost
);
1668 struct fc_rport
*rport
;
1669 unsigned long val
, flags
;
1672 rc
= fc_str_to_dev_loss(buf
, &val
);
1676 fc_host_dev_loss_tmo(shost
) = val
;
1677 spin_lock_irqsave(shost
->host_lock
, flags
);
1678 list_for_each_entry(rport
, &fc_host
->rports
, peers
)
1679 fc_rport_set_dev_loss_tmo(rport
, val
);
1680 spin_unlock_irqrestore(shost
->host_lock
, flags
);
1684 fc_private_host_show_function(dev_loss_tmo
, "%d\n", 20, );
1685 static FC_DEVICE_ATTR(host
, dev_loss_tmo
, S_IRUGO
| S_IWUSR
,
1686 show_fc_host_dev_loss_tmo
,
1687 store_fc_private_host_dev_loss_tmo
);
1689 fc_private_host_rd_attr(npiv_vports_inuse
, "%u\n", 20);
1692 * Host Statistics Management
1695 /* Show a given attribute in the statistics group */
1697 fc_stat_show(const struct device
*dev
, char *buf
, unsigned long offset
)
1699 struct Scsi_Host
*shost
= transport_class_to_shost(dev
);
1700 struct fc_internal
*i
= to_fc_internal(shost
->transportt
);
1701 struct fc_host_statistics
*stats
;
1702 ssize_t ret
= -ENOENT
;
1704 if (offset
> sizeof(struct fc_host_statistics
) ||
1705 offset
% sizeof(u64
) != 0)
1708 if (i
->f
->get_fc_host_stats
) {
1709 stats
= (i
->f
->get_fc_host_stats
)(shost
);
1711 ret
= snprintf(buf
, 20, "0x%llx\n",
1712 (unsigned long long)*(u64
*)(((u8
*) stats
) + offset
));
1718 /* generate a read-only statistics attribute */
1719 #define fc_host_statistic(name) \
1720 static ssize_t show_fcstat_##name(struct device *cd, \
1721 struct device_attribute *attr, \
1724 return fc_stat_show(cd, buf, \
1725 offsetof(struct fc_host_statistics, name)); \
1727 static FC_DEVICE_ATTR(host, name, S_IRUGO, show_fcstat_##name, NULL)
1729 fc_host_statistic(seconds_since_last_reset
);
1730 fc_host_statistic(tx_frames
);
1731 fc_host_statistic(tx_words
);
1732 fc_host_statistic(rx_frames
);
1733 fc_host_statistic(rx_words
);
1734 fc_host_statistic(lip_count
);
1735 fc_host_statistic(nos_count
);
1736 fc_host_statistic(error_frames
);
1737 fc_host_statistic(dumped_frames
);
1738 fc_host_statistic(link_failure_count
);
1739 fc_host_statistic(loss_of_sync_count
);
1740 fc_host_statistic(loss_of_signal_count
);
1741 fc_host_statistic(prim_seq_protocol_err_count
);
1742 fc_host_statistic(invalid_tx_word_count
);
1743 fc_host_statistic(invalid_crc_count
);
1744 fc_host_statistic(fcp_input_requests
);
1745 fc_host_statistic(fcp_output_requests
);
1746 fc_host_statistic(fcp_control_requests
);
1747 fc_host_statistic(fcp_input_megabytes
);
1748 fc_host_statistic(fcp_output_megabytes
);
1749 fc_host_statistic(fcp_packet_alloc_failures
);
1750 fc_host_statistic(fcp_packet_aborts
);
1751 fc_host_statistic(fcp_frame_alloc_failures
);
1752 fc_host_statistic(fc_no_free_exch
);
1753 fc_host_statistic(fc_no_free_exch_xid
);
1754 fc_host_statistic(fc_xid_not_found
);
1755 fc_host_statistic(fc_xid_busy
);
1756 fc_host_statistic(fc_seq_not_found
);
1757 fc_host_statistic(fc_non_bls_resp
);
1760 fc_reset_statistics(struct device
*dev
, struct device_attribute
*attr
,
1761 const char *buf
, size_t count
)
1763 struct Scsi_Host
*shost
= transport_class_to_shost(dev
);
1764 struct fc_internal
*i
= to_fc_internal(shost
->transportt
);
1766 /* ignore any data value written to the attribute */
1767 if (i
->f
->reset_fc_host_stats
) {
1768 i
->f
->reset_fc_host_stats(shost
);
1774 static FC_DEVICE_ATTR(host
, reset_statistics
, S_IWUSR
, NULL
,
1775 fc_reset_statistics
);
1777 static struct attribute
*fc_statistics_attrs
[] = {
1778 &device_attr_host_seconds_since_last_reset
.attr
,
1779 &device_attr_host_tx_frames
.attr
,
1780 &device_attr_host_tx_words
.attr
,
1781 &device_attr_host_rx_frames
.attr
,
1782 &device_attr_host_rx_words
.attr
,
1783 &device_attr_host_lip_count
.attr
,
1784 &device_attr_host_nos_count
.attr
,
1785 &device_attr_host_error_frames
.attr
,
1786 &device_attr_host_dumped_frames
.attr
,
1787 &device_attr_host_link_failure_count
.attr
,
1788 &device_attr_host_loss_of_sync_count
.attr
,
1789 &device_attr_host_loss_of_signal_count
.attr
,
1790 &device_attr_host_prim_seq_protocol_err_count
.attr
,
1791 &device_attr_host_invalid_tx_word_count
.attr
,
1792 &device_attr_host_invalid_crc_count
.attr
,
1793 &device_attr_host_fcp_input_requests
.attr
,
1794 &device_attr_host_fcp_output_requests
.attr
,
1795 &device_attr_host_fcp_control_requests
.attr
,
1796 &device_attr_host_fcp_input_megabytes
.attr
,
1797 &device_attr_host_fcp_output_megabytes
.attr
,
1798 &device_attr_host_fcp_packet_alloc_failures
.attr
,
1799 &device_attr_host_fcp_packet_aborts
.attr
,
1800 &device_attr_host_fcp_frame_alloc_failures
.attr
,
1801 &device_attr_host_fc_no_free_exch
.attr
,
1802 &device_attr_host_fc_no_free_exch_xid
.attr
,
1803 &device_attr_host_fc_xid_not_found
.attr
,
1804 &device_attr_host_fc_xid_busy
.attr
,
1805 &device_attr_host_fc_seq_not_found
.attr
,
1806 &device_attr_host_fc_non_bls_resp
.attr
,
1807 &device_attr_host_reset_statistics
.attr
,
1811 static struct attribute_group fc_statistics_group
= {
1812 .name
= "statistics",
1813 .attrs
= fc_statistics_attrs
,
1817 /* Host Vport Attributes */
1820 fc_parse_wwn(const char *ns
, u64
*nm
)
1825 memset(wwn
, 0, sizeof(wwn
));
1827 /* Validate and store the new name */
1828 for (i
=0, j
=0; i
< 16; i
++) {
1831 value
= hex_to_bin(*ns
++);
1833 j
= (j
<< 4) | value
;
1837 wwn
[i
/2] = j
& 0xff;
1842 *nm
= wwn_to_u64(wwn
);
1849 * "Short-cut" sysfs variable to create a new vport on a FC Host.
1850 * Input is a string of the form "<WWPN>:<WWNN>". Other attributes
1851 * will default to a NPIV-based FCP_Initiator; The WWNs are specified
1852 * as hex characters, and may *not* contain any prefixes (e.g. 0x, x, etc)
1855 store_fc_host_vport_create(struct device
*dev
, struct device_attribute
*attr
,
1856 const char *buf
, size_t count
)
1858 struct Scsi_Host
*shost
= transport_class_to_shost(dev
);
1859 struct fc_vport_identifiers vid
;
1860 struct fc_vport
*vport
;
1861 unsigned int cnt
=count
;
1864 memset(&vid
, 0, sizeof(vid
));
1866 /* count may include a LF at end of string */
1867 if (buf
[cnt
-1] == '\n')
1870 /* validate we have enough characters for WWPN */
1871 if ((cnt
!= (16+1+16)) || (buf
[16] != ':'))
1874 stat
= fc_parse_wwn(&buf
[0], &vid
.port_name
);
1878 stat
= fc_parse_wwn(&buf
[17], &vid
.node_name
);
1882 vid
.roles
= FC_PORT_ROLE_FCP_INITIATOR
;
1883 vid
.vport_type
= FC_PORTTYPE_NPIV
;
1884 /* vid.symbolic_name is already zero/NULL's */
1885 vid
.disable
= false; /* always enabled */
1887 /* we only allow support on Channel 0 !!! */
1888 stat
= fc_vport_setup(shost
, 0, &shost
->shost_gendev
, &vid
, &vport
);
1889 return stat
? stat
: count
;
1891 static FC_DEVICE_ATTR(host
, vport_create
, S_IWUSR
, NULL
,
1892 store_fc_host_vport_create
);
1896 * "Short-cut" sysfs variable to delete a vport on a FC Host.
1897 * Vport is identified by a string containing "<WWPN>:<WWNN>".
1898 * The WWNs are specified as hex characters, and may *not* contain
1899 * any prefixes (e.g. 0x, x, etc)
1902 store_fc_host_vport_delete(struct device
*dev
, struct device_attribute
*attr
,
1903 const char *buf
, size_t count
)
1905 struct Scsi_Host
*shost
= transport_class_to_shost(dev
);
1906 struct fc_host_attrs
*fc_host
= shost_to_fc_host(shost
);
1907 struct fc_vport
*vport
;
1909 unsigned long flags
;
1910 unsigned int cnt
=count
;
1913 /* count may include a LF at end of string */
1914 if (buf
[cnt
-1] == '\n')
1917 /* validate we have enough characters for WWPN */
1918 if ((cnt
!= (16+1+16)) || (buf
[16] != ':'))
1921 stat
= fc_parse_wwn(&buf
[0], &wwpn
);
1925 stat
= fc_parse_wwn(&buf
[17], &wwnn
);
1929 spin_lock_irqsave(shost
->host_lock
, flags
);
1931 /* we only allow support on Channel 0 !!! */
1932 list_for_each_entry(vport
, &fc_host
->vports
, peers
) {
1933 if ((vport
->channel
== 0) &&
1934 (vport
->port_name
== wwpn
) && (vport
->node_name
== wwnn
)) {
1935 if (vport
->flags
& (FC_VPORT_DEL
| FC_VPORT_CREATING
))
1937 vport
->flags
|= FC_VPORT_DELETING
;
1942 spin_unlock_irqrestore(shost
->host_lock
, flags
);
1947 stat
= fc_vport_terminate(vport
);
1948 return stat
? stat
: count
;
1950 static FC_DEVICE_ATTR(host
, vport_delete
, S_IWUSR
, NULL
,
1951 store_fc_host_vport_delete
);
1954 static int fc_host_match(struct attribute_container
*cont
,
1957 struct Scsi_Host
*shost
;
1958 struct fc_internal
*i
;
1960 if (!scsi_is_host_device(dev
))
1963 shost
= dev_to_shost(dev
);
1964 if (!shost
->transportt
|| shost
->transportt
->host_attrs
.ac
.class
1965 != &fc_host_class
.class)
1968 i
= to_fc_internal(shost
->transportt
);
1970 return &i
->t
.host_attrs
.ac
== cont
;
1973 static int fc_target_match(struct attribute_container
*cont
,
1976 struct Scsi_Host
*shost
;
1977 struct fc_internal
*i
;
1979 if (!scsi_is_target_device(dev
))
1982 shost
= dev_to_shost(dev
->parent
);
1983 if (!shost
->transportt
|| shost
->transportt
->host_attrs
.ac
.class
1984 != &fc_host_class
.class)
1987 i
= to_fc_internal(shost
->transportt
);
1989 return &i
->t
.target_attrs
.ac
== cont
;
1992 static void fc_rport_dev_release(struct device
*dev
)
1994 struct fc_rport
*rport
= dev_to_rport(dev
);
1995 put_device(dev
->parent
);
1999 int scsi_is_fc_rport(const struct device
*dev
)
2001 return dev
->release
== fc_rport_dev_release
;
2003 EXPORT_SYMBOL(scsi_is_fc_rport
);
2005 static int fc_rport_match(struct attribute_container
*cont
,
2008 struct Scsi_Host
*shost
;
2009 struct fc_internal
*i
;
2011 if (!scsi_is_fc_rport(dev
))
2014 shost
= dev_to_shost(dev
->parent
);
2015 if (!shost
->transportt
|| shost
->transportt
->host_attrs
.ac
.class
2016 != &fc_host_class
.class)
2019 i
= to_fc_internal(shost
->transportt
);
2021 return &i
->rport_attr_cont
.ac
== cont
;
2025 static void fc_vport_dev_release(struct device
*dev
)
2027 struct fc_vport
*vport
= dev_to_vport(dev
);
2028 put_device(dev
->parent
); /* release kobj parent */
2032 static int scsi_is_fc_vport(const struct device
*dev
)
2034 return dev
->release
== fc_vport_dev_release
;
2037 static int fc_vport_match(struct attribute_container
*cont
,
2040 struct fc_vport
*vport
;
2041 struct Scsi_Host
*shost
;
2042 struct fc_internal
*i
;
2044 if (!scsi_is_fc_vport(dev
))
2046 vport
= dev_to_vport(dev
);
2048 shost
= vport_to_shost(vport
);
2049 if (!shost
->transportt
|| shost
->transportt
->host_attrs
.ac
.class
2050 != &fc_host_class
.class)
2053 i
= to_fc_internal(shost
->transportt
);
2054 return &i
->vport_attr_cont
.ac
== cont
;
2059 * fc_eh_timed_out - FC Transport I/O timeout intercept handler
2060 * @scmd: The SCSI command which timed out
2062 * This routine protects against error handlers getting invoked while a
2063 * rport is in a blocked state, typically due to a temporarily loss of
2064 * connectivity. If the error handlers are allowed to proceed, requests
2065 * to abort i/o, reset the target, etc will likely fail as there is no way
2066 * to communicate with the device to perform the requested function. These
2067 * failures may result in the midlayer taking the device offline, requiring
2068 * manual intervention to restore operation.
2070 * This routine, called whenever an i/o times out, validates the state of
2071 * the underlying rport. If the rport is blocked, it returns
2072 * EH_RESET_TIMER, which will continue to reschedule the timeout.
2073 * Eventually, either the device will return, or devloss_tmo will fire,
2074 * and when the timeout then fires, it will be handled normally.
2075 * If the rport is not blocked, normal error handling continues.
2078 * This routine assumes no locks are held on entry.
2080 enum blk_eh_timer_return
2081 fc_eh_timed_out(struct scsi_cmnd
*scmd
)
2083 struct fc_rport
*rport
= starget_to_rport(scsi_target(scmd
->device
));
2085 if (rport
->port_state
== FC_PORTSTATE_BLOCKED
)
2086 return BLK_EH_RESET_TIMER
;
2088 return BLK_EH_NOT_HANDLED
;
2090 EXPORT_SYMBOL(fc_eh_timed_out
);
2093 * Called by fc_user_scan to locate an rport on the shost that
2094 * matches the channel and target id, and invoke scsi_scan_target()
2098 fc_user_scan_tgt(struct Scsi_Host
*shost
, uint channel
, uint id
, u64 lun
)
2100 struct fc_rport
*rport
;
2101 unsigned long flags
;
2103 spin_lock_irqsave(shost
->host_lock
, flags
);
2105 list_for_each_entry(rport
, &fc_host_rports(shost
), peers
) {
2106 if (rport
->scsi_target_id
== -1)
2109 if (rport
->port_state
!= FC_PORTSTATE_ONLINE
)
2112 if ((channel
== rport
->channel
) &&
2113 (id
== rport
->scsi_target_id
)) {
2114 spin_unlock_irqrestore(shost
->host_lock
, flags
);
2115 scsi_scan_target(&rport
->dev
, channel
, id
, lun
,
2121 spin_unlock_irqrestore(shost
->host_lock
, flags
);
2125 * Called via sysfs scan routines. Necessary, as the FC transport
2126 * wants to place all target objects below the rport object. So this
2127 * routine must invoke the scsi_scan_target() routine with the rport
2128 * object as the parent.
2131 fc_user_scan(struct Scsi_Host
*shost
, uint channel
, uint id
, u64 lun
)
2136 if (((channel
!= SCAN_WILD_CARD
) && (channel
> shost
->max_channel
)) ||
2137 ((id
!= SCAN_WILD_CARD
) && (id
>= shost
->max_id
)) ||
2138 ((lun
!= SCAN_WILD_CARD
) && (lun
> shost
->max_lun
)))
2141 if (channel
== SCAN_WILD_CARD
) {
2143 chhi
= shost
->max_channel
+ 1;
2149 if (id
== SCAN_WILD_CARD
) {
2151 tgthi
= shost
->max_id
;
2157 for ( ; chlo
< chhi
; chlo
++)
2158 for ( ; tgtlo
< tgthi
; tgtlo
++)
2159 fc_user_scan_tgt(shost
, chlo
, tgtlo
, lun
);
2164 struct scsi_transport_template
*
2165 fc_attach_transport(struct fc_function_template
*ft
)
2168 struct fc_internal
*i
= kzalloc(sizeof(struct fc_internal
),
2174 i
->t
.target_attrs
.ac
.attrs
= &i
->starget_attrs
[0];
2175 i
->t
.target_attrs
.ac
.class = &fc_transport_class
.class;
2176 i
->t
.target_attrs
.ac
.match
= fc_target_match
;
2177 i
->t
.target_size
= sizeof(struct fc_starget_attrs
);
2178 transport_container_register(&i
->t
.target_attrs
);
2180 i
->t
.host_attrs
.ac
.attrs
= &i
->host_attrs
[0];
2181 i
->t
.host_attrs
.ac
.class = &fc_host_class
.class;
2182 i
->t
.host_attrs
.ac
.match
= fc_host_match
;
2183 i
->t
.host_size
= sizeof(struct fc_host_attrs
);
2184 if (ft
->get_fc_host_stats
)
2185 i
->t
.host_attrs
.statistics
= &fc_statistics_group
;
2186 transport_container_register(&i
->t
.host_attrs
);
2188 i
->rport_attr_cont
.ac
.attrs
= &i
->rport_attrs
[0];
2189 i
->rport_attr_cont
.ac
.class = &fc_rport_class
.class;
2190 i
->rport_attr_cont
.ac
.match
= fc_rport_match
;
2191 transport_container_register(&i
->rport_attr_cont
);
2193 i
->vport_attr_cont
.ac
.attrs
= &i
->vport_attrs
[0];
2194 i
->vport_attr_cont
.ac
.class = &fc_vport_class
.class;
2195 i
->vport_attr_cont
.ac
.match
= fc_vport_match
;
2196 transport_container_register(&i
->vport_attr_cont
);
2200 /* Transport uses the shost workq for scsi scanning */
2201 i
->t
.create_work_queue
= 1;
2203 i
->t
.user_scan
= fc_user_scan
;
2206 * Setup SCSI Target Attributes.
2209 SETUP_STARGET_ATTRIBUTE_RD(node_name
);
2210 SETUP_STARGET_ATTRIBUTE_RD(port_name
);
2211 SETUP_STARGET_ATTRIBUTE_RD(port_id
);
2213 BUG_ON(count
> FC_STARGET_NUM_ATTRS
);
2215 i
->starget_attrs
[count
] = NULL
;
2219 * Setup SCSI Host Attributes.
2222 SETUP_HOST_ATTRIBUTE_RD(node_name
);
2223 SETUP_HOST_ATTRIBUTE_RD(port_name
);
2224 SETUP_HOST_ATTRIBUTE_RD(permanent_port_name
);
2225 SETUP_HOST_ATTRIBUTE_RD(supported_classes
);
2226 SETUP_HOST_ATTRIBUTE_RD(supported_fc4s
);
2227 SETUP_HOST_ATTRIBUTE_RD(supported_speeds
);
2228 SETUP_HOST_ATTRIBUTE_RD(maxframe_size
);
2229 if (ft
->vport_create
) {
2230 SETUP_HOST_ATTRIBUTE_RD_NS(max_npiv_vports
);
2231 SETUP_HOST_ATTRIBUTE_RD_NS(npiv_vports_inuse
);
2233 SETUP_HOST_ATTRIBUTE_RD(serial_number
);
2234 SETUP_HOST_ATTRIBUTE_RD(manufacturer
);
2235 SETUP_HOST_ATTRIBUTE_RD(model
);
2236 SETUP_HOST_ATTRIBUTE_RD(model_description
);
2237 SETUP_HOST_ATTRIBUTE_RD(hardware_version
);
2238 SETUP_HOST_ATTRIBUTE_RD(driver_version
);
2239 SETUP_HOST_ATTRIBUTE_RD(firmware_version
);
2240 SETUP_HOST_ATTRIBUTE_RD(optionrom_version
);
2242 SETUP_HOST_ATTRIBUTE_RD(port_id
);
2243 SETUP_HOST_ATTRIBUTE_RD(port_type
);
2244 SETUP_HOST_ATTRIBUTE_RD(port_state
);
2245 SETUP_HOST_ATTRIBUTE_RD(active_fc4s
);
2246 SETUP_HOST_ATTRIBUTE_RD(speed
);
2247 SETUP_HOST_ATTRIBUTE_RD(fabric_name
);
2248 SETUP_HOST_ATTRIBUTE_RD(symbolic_name
);
2249 SETUP_HOST_ATTRIBUTE_RW(system_hostname
);
2251 /* Transport-managed attributes */
2252 SETUP_PRIVATE_HOST_ATTRIBUTE_RW(dev_loss_tmo
);
2253 SETUP_PRIVATE_HOST_ATTRIBUTE_RW(tgtid_bind_type
);
2254 if (ft
->issue_fc_host_lip
)
2255 SETUP_PRIVATE_HOST_ATTRIBUTE_RW(issue_lip
);
2256 if (ft
->vport_create
)
2257 SETUP_PRIVATE_HOST_ATTRIBUTE_RW(vport_create
);
2258 if (ft
->vport_delete
)
2259 SETUP_PRIVATE_HOST_ATTRIBUTE_RW(vport_delete
);
2261 BUG_ON(count
> FC_HOST_NUM_ATTRS
);
2263 i
->host_attrs
[count
] = NULL
;
2266 * Setup Remote Port Attributes.
2269 SETUP_RPORT_ATTRIBUTE_RD(maxframe_size
);
2270 SETUP_RPORT_ATTRIBUTE_RD(supported_classes
);
2271 SETUP_RPORT_ATTRIBUTE_RW(dev_loss_tmo
);
2272 SETUP_PRIVATE_RPORT_ATTRIBUTE_RD(node_name
);
2273 SETUP_PRIVATE_RPORT_ATTRIBUTE_RD(port_name
);
2274 SETUP_PRIVATE_RPORT_ATTRIBUTE_RD(port_id
);
2275 SETUP_PRIVATE_RPORT_ATTRIBUTE_RD(roles
);
2276 SETUP_PRIVATE_RPORT_ATTRIBUTE_RD(port_state
);
2277 SETUP_PRIVATE_RPORT_ATTRIBUTE_RD(scsi_target_id
);
2278 SETUP_PRIVATE_RPORT_ATTRIBUTE_RW(fast_io_fail_tmo
);
2280 BUG_ON(count
> FC_RPORT_NUM_ATTRS
);
2282 i
->rport_attrs
[count
] = NULL
;
2285 * Setup Virtual Port Attributes.
2288 SETUP_PRIVATE_VPORT_ATTRIBUTE_RD(vport_state
);
2289 SETUP_PRIVATE_VPORT_ATTRIBUTE_RD(vport_last_state
);
2290 SETUP_PRIVATE_VPORT_ATTRIBUTE_RD(node_name
);
2291 SETUP_PRIVATE_VPORT_ATTRIBUTE_RD(port_name
);
2292 SETUP_PRIVATE_VPORT_ATTRIBUTE_RD(roles
);
2293 SETUP_PRIVATE_VPORT_ATTRIBUTE_RD(vport_type
);
2294 SETUP_VPORT_ATTRIBUTE_RW(symbolic_name
);
2295 SETUP_VPORT_ATTRIBUTE_WR(vport_delete
);
2296 SETUP_VPORT_ATTRIBUTE_WR(vport_disable
);
2298 BUG_ON(count
> FC_VPORT_NUM_ATTRS
);
2300 i
->vport_attrs
[count
] = NULL
;
2304 EXPORT_SYMBOL(fc_attach_transport
);
2306 void fc_release_transport(struct scsi_transport_template
*t
)
2308 struct fc_internal
*i
= to_fc_internal(t
);
2310 transport_container_unregister(&i
->t
.target_attrs
);
2311 transport_container_unregister(&i
->t
.host_attrs
);
2312 transport_container_unregister(&i
->rport_attr_cont
);
2313 transport_container_unregister(&i
->vport_attr_cont
);
2317 EXPORT_SYMBOL(fc_release_transport
);
2320 * fc_queue_work - Queue work to the fc_host workqueue.
2321 * @shost: Pointer to Scsi_Host bound to fc_host.
2322 * @work: Work to queue for execution.
2325 * 1 - work queued for execution
2326 * 0 - work is already queued
2327 * -EINVAL - work queue doesn't exist
2330 fc_queue_work(struct Scsi_Host
*shost
, struct work_struct
*work
)
2332 if (unlikely(!fc_host_work_q(shost
))) {
2334 "ERROR: FC host '%s' attempted to queue work, "
2335 "when no workqueue created.\n", shost
->hostt
->name
);
2341 return queue_work(fc_host_work_q(shost
), work
);
2345 * fc_flush_work - Flush a fc_host's workqueue.
2346 * @shost: Pointer to Scsi_Host bound to fc_host.
2349 fc_flush_work(struct Scsi_Host
*shost
)
2351 if (!fc_host_work_q(shost
)) {
2353 "ERROR: FC host '%s' attempted to flush work, "
2354 "when no workqueue created.\n", shost
->hostt
->name
);
2359 flush_workqueue(fc_host_work_q(shost
));
2363 * fc_queue_devloss_work - Schedule work for the fc_host devloss workqueue.
2364 * @shost: Pointer to Scsi_Host bound to fc_host.
2365 * @work: Work to queue for execution.
2366 * @delay: jiffies to delay the work queuing
2369 * 1 on success / 0 already queued / < 0 for error
2372 fc_queue_devloss_work(struct Scsi_Host
*shost
, struct delayed_work
*work
,
2373 unsigned long delay
)
2375 if (unlikely(!fc_host_devloss_work_q(shost
))) {
2377 "ERROR: FC host '%s' attempted to queue work, "
2378 "when no workqueue created.\n", shost
->hostt
->name
);
2384 return queue_delayed_work(fc_host_devloss_work_q(shost
), work
, delay
);
2388 * fc_flush_devloss - Flush a fc_host's devloss workqueue.
2389 * @shost: Pointer to Scsi_Host bound to fc_host.
2392 fc_flush_devloss(struct Scsi_Host
*shost
)
2394 if (!fc_host_devloss_work_q(shost
)) {
2396 "ERROR: FC host '%s' attempted to flush work, "
2397 "when no workqueue created.\n", shost
->hostt
->name
);
2402 flush_workqueue(fc_host_devloss_work_q(shost
));
2407 * fc_remove_host - called to terminate any fc_transport-related elements for a scsi host.
2408 * @shost: Which &Scsi_Host
2410 * This routine is expected to be called immediately preceding the
2411 * a driver's call to scsi_remove_host().
2413 * WARNING: A driver utilizing the fc_transport, which fails to call
2414 * this routine prior to scsi_remove_host(), will leave dangling
2415 * objects in /sys/class/fc_remote_ports. Access to any of these
2416 * objects can result in a system crash !!!
2419 * This routine assumes no locks are held on entry.
2422 fc_remove_host(struct Scsi_Host
*shost
)
2424 struct fc_vport
*vport
= NULL
, *next_vport
= NULL
;
2425 struct fc_rport
*rport
= NULL
, *next_rport
= NULL
;
2426 struct workqueue_struct
*work_q
;
2427 struct fc_host_attrs
*fc_host
= shost_to_fc_host(shost
);
2428 unsigned long flags
;
2430 spin_lock_irqsave(shost
->host_lock
, flags
);
2432 /* Remove any vports */
2433 list_for_each_entry_safe(vport
, next_vport
, &fc_host
->vports
, peers
) {
2434 vport
->flags
|= FC_VPORT_DELETING
;
2435 fc_queue_work(shost
, &vport
->vport_delete_work
);
2438 /* Remove any remote ports */
2439 list_for_each_entry_safe(rport
, next_rport
,
2440 &fc_host
->rports
, peers
) {
2441 list_del(&rport
->peers
);
2442 rport
->port_state
= FC_PORTSTATE_DELETED
;
2443 fc_queue_work(shost
, &rport
->rport_delete_work
);
2446 list_for_each_entry_safe(rport
, next_rport
,
2447 &fc_host
->rport_bindings
, peers
) {
2448 list_del(&rport
->peers
);
2449 rport
->port_state
= FC_PORTSTATE_DELETED
;
2450 fc_queue_work(shost
, &rport
->rport_delete_work
);
2453 spin_unlock_irqrestore(shost
->host_lock
, flags
);
2455 /* flush all scan work items */
2456 scsi_flush_work(shost
);
2458 /* flush all stgt delete, and rport delete work items, then kill it */
2459 if (fc_host
->work_q
) {
2460 work_q
= fc_host
->work_q
;
2461 fc_host
->work_q
= NULL
;
2462 destroy_workqueue(work_q
);
2465 /* flush all devloss work items, then kill it */
2466 if (fc_host
->devloss_work_q
) {
2467 work_q
= fc_host
->devloss_work_q
;
2468 fc_host
->devloss_work_q
= NULL
;
2469 destroy_workqueue(work_q
);
2472 EXPORT_SYMBOL(fc_remove_host
);
2474 static void fc_terminate_rport_io(struct fc_rport
*rport
)
2476 struct Scsi_Host
*shost
= rport_to_shost(rport
);
2477 struct fc_internal
*i
= to_fc_internal(shost
->transportt
);
2479 /* Involve the LLDD if possible to terminate all io on the rport. */
2480 if (i
->f
->terminate_rport_io
)
2481 i
->f
->terminate_rport_io(rport
);
2484 * Must unblock to flush queued IO. scsi-ml will fail incoming reqs.
2486 scsi_target_unblock(&rport
->dev
, SDEV_TRANSPORT_OFFLINE
);
2490 * fc_starget_delete - called to delete the scsi descendants of an rport
2491 * @work: remote port to be operated on.
2493 * Deletes target and all sdevs.
2496 fc_starget_delete(struct work_struct
*work
)
2498 struct fc_rport
*rport
=
2499 container_of(work
, struct fc_rport
, stgt_delete_work
);
2501 fc_terminate_rport_io(rport
);
2502 scsi_remove_target(&rport
->dev
);
2507 * fc_rport_final_delete - finish rport termination and delete it.
2508 * @work: remote port to be deleted.
2511 fc_rport_final_delete(struct work_struct
*work
)
2513 struct fc_rport
*rport
=
2514 container_of(work
, struct fc_rport
, rport_delete_work
);
2515 struct device
*dev
= &rport
->dev
;
2516 struct Scsi_Host
*shost
= rport_to_shost(rport
);
2517 struct fc_internal
*i
= to_fc_internal(shost
->transportt
);
2518 unsigned long flags
;
2519 int do_callback
= 0;
2521 fc_terminate_rport_io(rport
);
2524 * if a scan is pending, flush the SCSI Host work_q so that
2525 * that we can reclaim the rport scan work element.
2527 if (rport
->flags
& FC_RPORT_SCAN_PENDING
)
2528 scsi_flush_work(shost
);
2531 * Cancel any outstanding timers. These should really exist
2532 * only when rmmod'ing the LLDD and we're asking for
2533 * immediate termination of the rports
2535 spin_lock_irqsave(shost
->host_lock
, flags
);
2536 if (rport
->flags
& FC_RPORT_DEVLOSS_PENDING
) {
2537 spin_unlock_irqrestore(shost
->host_lock
, flags
);
2538 if (!cancel_delayed_work(&rport
->fail_io_work
))
2539 fc_flush_devloss(shost
);
2540 if (!cancel_delayed_work(&rport
->dev_loss_work
))
2541 fc_flush_devloss(shost
);
2542 cancel_work_sync(&rport
->scan_work
);
2543 spin_lock_irqsave(shost
->host_lock
, flags
);
2544 rport
->flags
&= ~FC_RPORT_DEVLOSS_PENDING
;
2546 spin_unlock_irqrestore(shost
->host_lock
, flags
);
2548 /* Delete SCSI target and sdevs */
2549 if (rport
->scsi_target_id
!= -1)
2550 fc_starget_delete(&rport
->stgt_delete_work
);
2553 * Notify the driver that the rport is now dead. The LLDD will
2554 * also guarantee that any communication to the rport is terminated
2556 * Avoid this call if we already called it when we preserved the
2557 * rport for the binding.
2559 spin_lock_irqsave(shost
->host_lock
, flags
);
2560 if (!(rport
->flags
& FC_RPORT_DEVLOSS_CALLBK_DONE
) &&
2561 (i
->f
->dev_loss_tmo_callbk
)) {
2562 rport
->flags
|= FC_RPORT_DEVLOSS_CALLBK_DONE
;
2565 spin_unlock_irqrestore(shost
->host_lock
, flags
);
2568 i
->f
->dev_loss_tmo_callbk(rport
);
2570 fc_bsg_remove(rport
->rqst_q
);
2572 transport_remove_device(dev
);
2574 transport_destroy_device(dev
);
2575 scsi_host_put(shost
); /* for fc_host->rport list */
2576 put_device(dev
); /* for self-reference */
2581 * fc_remote_port_create - allocates and creates a remote FC port.
2582 * @shost: scsi host the remote port is connected to.
2583 * @channel: Channel on shost port connected to.
2584 * @ids: The world wide names, fc address, and FC4 port
2585 * roles for the remote port.
2587 * Allocates and creates the remoter port structure, including the
2588 * class and sysfs creation.
2591 * This routine assumes no locks are held on entry.
2593 static struct fc_rport
*
2594 fc_remote_port_create(struct Scsi_Host
*shost
, int channel
,
2595 struct fc_rport_identifiers
*ids
)
2597 struct fc_host_attrs
*fc_host
= shost_to_fc_host(shost
);
2598 struct fc_internal
*fci
= to_fc_internal(shost
->transportt
);
2599 struct fc_rport
*rport
;
2601 unsigned long flags
;
2605 size
= (sizeof(struct fc_rport
) + fci
->f
->dd_fcrport_size
);
2606 rport
= kzalloc(size
, GFP_KERNEL
);
2607 if (unlikely(!rport
)) {
2608 printk(KERN_ERR
"%s: allocation failure\n", __func__
);
2612 rport
->maxframe_size
= -1;
2613 rport
->supported_classes
= FC_COS_UNSPECIFIED
;
2614 rport
->dev_loss_tmo
= fc_host
->dev_loss_tmo
;
2615 memcpy(&rport
->node_name
, &ids
->node_name
, sizeof(rport
->node_name
));
2616 memcpy(&rport
->port_name
, &ids
->port_name
, sizeof(rport
->port_name
));
2617 rport
->port_id
= ids
->port_id
;
2618 rport
->roles
= ids
->roles
;
2619 rport
->port_state
= FC_PORTSTATE_ONLINE
;
2620 if (fci
->f
->dd_fcrport_size
)
2621 rport
->dd_data
= &rport
[1];
2622 rport
->channel
= channel
;
2623 rport
->fast_io_fail_tmo
= -1;
2625 INIT_DELAYED_WORK(&rport
->dev_loss_work
, fc_timeout_deleted_rport
);
2626 INIT_DELAYED_WORK(&rport
->fail_io_work
, fc_timeout_fail_rport_io
);
2627 INIT_WORK(&rport
->scan_work
, fc_scsi_scan_rport
);
2628 INIT_WORK(&rport
->stgt_delete_work
, fc_starget_delete
);
2629 INIT_WORK(&rport
->rport_delete_work
, fc_rport_final_delete
);
2631 spin_lock_irqsave(shost
->host_lock
, flags
);
2633 rport
->number
= fc_host
->next_rport_number
++;
2634 if ((rport
->roles
& FC_PORT_ROLE_FCP_TARGET
) ||
2635 (rport
->roles
& FC_PORT_ROLE_FCP_DUMMY_INITIATOR
))
2636 rport
->scsi_target_id
= fc_host
->next_target_id
++;
2638 rport
->scsi_target_id
= -1;
2639 list_add_tail(&rport
->peers
, &fc_host
->rports
);
2640 scsi_host_get(shost
); /* for fc_host->rport list */
2642 spin_unlock_irqrestore(shost
->host_lock
, flags
);
2645 device_initialize(dev
); /* takes self reference */
2646 dev
->parent
= get_device(&shost
->shost_gendev
); /* parent reference */
2647 dev
->release
= fc_rport_dev_release
;
2648 dev_set_name(dev
, "rport-%d:%d-%d",
2649 shost
->host_no
, channel
, rport
->number
);
2650 transport_setup_device(dev
);
2652 error
= device_add(dev
);
2654 printk(KERN_ERR
"FC Remote Port device_add failed\n");
2657 transport_add_device(dev
);
2658 transport_configure_device(dev
);
2660 fc_bsg_rportadd(shost
, rport
);
2661 /* ignore any bsg add error - we just can't do sgio */
2663 if (rport
->roles
& FC_PORT_ROLE_FCP_TARGET
) {
2664 /* initiate a scan of the target */
2665 rport
->flags
|= FC_RPORT_SCAN_PENDING
;
2666 scsi_queue_work(shost
, &rport
->scan_work
);
2672 transport_destroy_device(dev
);
2673 spin_lock_irqsave(shost
->host_lock
, flags
);
2674 list_del(&rport
->peers
);
2675 scsi_host_put(shost
); /* for fc_host->rport list */
2676 spin_unlock_irqrestore(shost
->host_lock
, flags
);
2677 put_device(dev
->parent
);
2683 * fc_remote_port_add - notify fc transport of the existence of a remote FC port.
2684 * @shost: scsi host the remote port is connected to.
2685 * @channel: Channel on shost port connected to.
2686 * @ids: The world wide names, fc address, and FC4 port
2687 * roles for the remote port.
2689 * The LLDD calls this routine to notify the transport of the existence
2690 * of a remote port. The LLDD provides the unique identifiers (wwpn,wwn)
2691 * of the port, it's FC address (port_id), and the FC4 roles that are
2692 * active for the port.
2694 * For ports that are FCP targets (aka scsi targets), the FC transport
2695 * maintains consistent target id bindings on behalf of the LLDD.
2696 * A consistent target id binding is an assignment of a target id to
2697 * a remote port identifier, which persists while the scsi host is
2698 * attached. The remote port can disappear, then later reappear, and
2699 * it's target id assignment remains the same. This allows for shifts
2700 * in FC addressing (if binding by wwpn or wwnn) with no apparent
2701 * changes to the scsi subsystem which is based on scsi host number and
2702 * target id values. Bindings are only valid during the attachment of
2703 * the scsi host. If the host detaches, then later re-attaches, target
2704 * id bindings may change.
2706 * This routine is responsible for returning a remote port structure.
2707 * The routine will search the list of remote ports it maintains
2708 * internally on behalf of consistent target id mappings. If found, the
2709 * remote port structure will be reused. Otherwise, a new remote port
2710 * structure will be allocated.
2712 * Whenever a remote port is allocated, a new fc_remote_port class
2713 * device is created.
2715 * Should not be called from interrupt context.
2718 * This routine assumes no locks are held on entry.
2721 fc_remote_port_add(struct Scsi_Host
*shost
, int channel
,
2722 struct fc_rport_identifiers
*ids
)
2724 struct fc_internal
*fci
= to_fc_internal(shost
->transportt
);
2725 struct fc_host_attrs
*fc_host
= shost_to_fc_host(shost
);
2726 struct fc_rport
*rport
;
2727 unsigned long flags
;
2730 /* ensure any stgt delete functions are done */
2731 fc_flush_work(shost
);
2734 * Search the list of "active" rports, for an rport that has been
2735 * deleted, but we've held off the real delete while the target
2736 * is in a "blocked" state.
2738 spin_lock_irqsave(shost
->host_lock
, flags
);
2740 list_for_each_entry(rport
, &fc_host
->rports
, peers
) {
2742 if ((rport
->port_state
== FC_PORTSTATE_BLOCKED
||
2743 rport
->port_state
== FC_PORTSTATE_NOTPRESENT
) &&
2744 (rport
->channel
== channel
)) {
2746 switch (fc_host
->tgtid_bind_type
) {
2747 case FC_TGTID_BIND_BY_WWPN
:
2748 case FC_TGTID_BIND_NONE
:
2749 if (rport
->port_name
== ids
->port_name
)
2752 case FC_TGTID_BIND_BY_WWNN
:
2753 if (rport
->node_name
== ids
->node_name
)
2756 case FC_TGTID_BIND_BY_ID
:
2757 if (rport
->port_id
== ids
->port_id
)
2764 memcpy(&rport
->node_name
, &ids
->node_name
,
2765 sizeof(rport
->node_name
));
2766 memcpy(&rport
->port_name
, &ids
->port_name
,
2767 sizeof(rport
->port_name
));
2768 rport
->port_id
= ids
->port_id
;
2770 rport
->port_state
= FC_PORTSTATE_ONLINE
;
2771 rport
->roles
= ids
->roles
;
2773 spin_unlock_irqrestore(shost
->host_lock
, flags
);
2775 if (fci
->f
->dd_fcrport_size
)
2776 memset(rport
->dd_data
, 0,
2777 fci
->f
->dd_fcrport_size
);
2780 * If we were not a target, cancel the
2781 * io terminate and rport timers, and
2784 * If we were a target, but our new role
2785 * doesn't indicate a target, leave the
2786 * timers running expecting the role to
2787 * change as the target fully logs in. If
2788 * it doesn't, the target will be torn down.
2790 * If we were a target, and our role shows
2791 * we're still a target, cancel the timers
2792 * and kick off a scan.
2795 /* was a target, not in roles */
2796 if ((rport
->scsi_target_id
!= -1) &&
2797 (!(ids
->roles
& FC_PORT_ROLE_FCP_TARGET
)))
2801 * Stop the fail io and dev_loss timers.
2802 * If they flush, the port_state will
2803 * be checked and will NOOP the function.
2805 if (!cancel_delayed_work(&rport
->fail_io_work
))
2806 fc_flush_devloss(shost
);
2807 if (!cancel_delayed_work(&rport
->dev_loss_work
))
2808 fc_flush_devloss(shost
);
2810 spin_lock_irqsave(shost
->host_lock
, flags
);
2812 rport
->flags
&= ~(FC_RPORT_FAST_FAIL_TIMEDOUT
|
2813 FC_RPORT_DEVLOSS_PENDING
|
2814 FC_RPORT_DEVLOSS_CALLBK_DONE
);
2816 spin_unlock_irqrestore(shost
->host_lock
, flags
);
2818 /* if target, initiate a scan */
2819 if (rport
->scsi_target_id
!= -1) {
2820 scsi_target_unblock(&rport
->dev
,
2822 spin_lock_irqsave(shost
->host_lock
,
2824 rport
->flags
|= FC_RPORT_SCAN_PENDING
;
2825 scsi_queue_work(shost
,
2827 spin_unlock_irqrestore(shost
->host_lock
,
2831 fc_bsg_goose_queue(rport
);
2839 * Search the bindings array
2840 * Note: if never a FCP target, you won't be on this list
2842 if (fc_host
->tgtid_bind_type
!= FC_TGTID_BIND_NONE
) {
2844 /* search for a matching consistent binding */
2846 list_for_each_entry(rport
, &fc_host
->rport_bindings
,
2848 if (rport
->channel
!= channel
)
2851 switch (fc_host
->tgtid_bind_type
) {
2852 case FC_TGTID_BIND_BY_WWPN
:
2853 if (rport
->port_name
== ids
->port_name
)
2856 case FC_TGTID_BIND_BY_WWNN
:
2857 if (rport
->node_name
== ids
->node_name
)
2860 case FC_TGTID_BIND_BY_ID
:
2861 if (rport
->port_id
== ids
->port_id
)
2864 case FC_TGTID_BIND_NONE
: /* to keep compiler happy */
2869 list_move_tail(&rport
->peers
, &fc_host
->rports
);
2875 memcpy(&rport
->node_name
, &ids
->node_name
,
2876 sizeof(rport
->node_name
));
2877 memcpy(&rport
->port_name
, &ids
->port_name
,
2878 sizeof(rport
->port_name
));
2879 rport
->port_id
= ids
->port_id
;
2880 rport
->port_state
= FC_PORTSTATE_ONLINE
;
2881 rport
->flags
&= ~FC_RPORT_FAST_FAIL_TIMEDOUT
;
2883 if (fci
->f
->dd_fcrport_size
)
2884 memset(rport
->dd_data
, 0,
2885 fci
->f
->dd_fcrport_size
);
2886 spin_unlock_irqrestore(shost
->host_lock
, flags
);
2888 fc_remote_port_rolechg(rport
, ids
->roles
);
2893 spin_unlock_irqrestore(shost
->host_lock
, flags
);
2895 /* No consistent binding found - create new remote port entry */
2896 rport
= fc_remote_port_create(shost
, channel
, ids
);
2900 EXPORT_SYMBOL(fc_remote_port_add
);
2904 * fc_remote_port_delete - notifies the fc transport that a remote port is no longer in existence.
2905 * @rport: The remote port that no longer exists
2907 * The LLDD calls this routine to notify the transport that a remote
2908 * port is no longer part of the topology. Note: Although a port
2909 * may no longer be part of the topology, it may persist in the remote
2910 * ports displayed by the fc_host. We do this under 2 conditions:
2912 * 1) If the port was a scsi target, we delay its deletion by "blocking" it.
2913 * This allows the port to temporarily disappear, then reappear without
2914 * disrupting the SCSI device tree attached to it. During the "blocked"
2915 * period the port will still exist.
2917 * 2) If the port was a scsi target and disappears for longer than we
2918 * expect, we'll delete the port and the tear down the SCSI device tree
2919 * attached to it. However, we want to semi-persist the target id assigned
2920 * to that port if it eventually does exist. The port structure will
2921 * remain (although with minimal information) so that the target id
2922 * bindings also remain.
2924 * If the remote port is not an FCP Target, it will be fully torn down
2925 * and deallocated, including the fc_remote_port class device.
2927 * If the remote port is an FCP Target, the port will be placed in a
2928 * temporary blocked state. From the LLDD's perspective, the rport no
2929 * longer exists. From the SCSI midlayer's perspective, the SCSI target
2930 * exists, but all sdevs on it are blocked from further I/O. The following
2933 * If the remote port does not return (signaled by a LLDD call to
2934 * fc_remote_port_add()) within the dev_loss_tmo timeout, then the
2935 * scsi target is removed - killing all outstanding i/o and removing the
2936 * scsi devices attached to it. The port structure will be marked Not
2937 * Present and be partially cleared, leaving only enough information to
2938 * recognize the remote port relative to the scsi target id binding if
2939 * it later appears. The port will remain as long as there is a valid
2940 * binding (e.g. until the user changes the binding type or unloads the
2941 * scsi host with the binding).
2943 * If the remote port returns within the dev_loss_tmo value (and matches
2944 * according to the target id binding type), the port structure will be
2945 * reused. If it is no longer a SCSI target, the target will be torn
2946 * down. If it continues to be a SCSI target, then the target will be
2947 * unblocked (allowing i/o to be resumed), and a scan will be activated
2948 * to ensure that all luns are detected.
2950 * Called from normal process context only - cannot be called from interrupt.
2953 * This routine assumes no locks are held on entry.
2956 fc_remote_port_delete(struct fc_rport
*rport
)
2958 struct Scsi_Host
*shost
= rport_to_shost(rport
);
2959 unsigned long timeout
= rport
->dev_loss_tmo
;
2960 unsigned long flags
;
2963 * No need to flush the fc_host work_q's, as all adds are synchronous.
2965 * We do need to reclaim the rport scan work element, so eventually
2966 * (in fc_rport_final_delete()) we'll flush the scsi host work_q if
2967 * there's still a scan pending.
2970 spin_lock_irqsave(shost
->host_lock
, flags
);
2972 if (rport
->port_state
!= FC_PORTSTATE_ONLINE
) {
2973 spin_unlock_irqrestore(shost
->host_lock
, flags
);
2978 * In the past, we if this was not an FCP-Target, we would
2979 * unconditionally just jump to deleting the rport.
2980 * However, rports can be used as node containers by the LLDD,
2981 * and its not appropriate to just terminate the rport at the
2982 * first sign of a loss in connectivity. The LLDD may want to
2983 * send ELS traffic to re-validate the login. If the rport is
2984 * immediately deleted, it makes it inappropriate for a node
2986 * So... we now unconditionally wait dev_loss_tmo before
2987 * destroying an rport.
2990 rport
->port_state
= FC_PORTSTATE_BLOCKED
;
2992 rport
->flags
|= FC_RPORT_DEVLOSS_PENDING
;
2994 spin_unlock_irqrestore(shost
->host_lock
, flags
);
2996 scsi_target_block(&rport
->dev
);
2998 /* see if we need to kill io faster than waiting for device loss */
2999 if ((rport
->fast_io_fail_tmo
!= -1) &&
3000 (rport
->fast_io_fail_tmo
< timeout
))
3001 fc_queue_devloss_work(shost
, &rport
->fail_io_work
,
3002 rport
->fast_io_fail_tmo
* HZ
);
3004 /* cap the length the devices can be blocked until they are deleted */
3005 fc_queue_devloss_work(shost
, &rport
->dev_loss_work
, timeout
* HZ
);
3007 EXPORT_SYMBOL(fc_remote_port_delete
);
3010 * fc_remote_port_rolechg - notifies the fc transport that the roles on a remote may have changed.
3011 * @rport: The remote port that changed.
3012 * @roles: New roles for this port.
3014 * Description: The LLDD calls this routine to notify the transport that the
3015 * roles on a remote port may have changed. The largest effect of this is
3016 * if a port now becomes a FCP Target, it must be allocated a
3017 * scsi target id. If the port is no longer a FCP target, any
3018 * scsi target id value assigned to it will persist in case the
3019 * role changes back to include FCP Target. No changes in the scsi
3020 * midlayer will be invoked if the role changes (in the expectation
3021 * that the role will be resumed. If it doesn't normal error processing
3024 * Should not be called from interrupt context.
3027 * This routine assumes no locks are held on entry.
3030 fc_remote_port_rolechg(struct fc_rport
*rport
, u32 roles
)
3032 struct Scsi_Host
*shost
= rport_to_shost(rport
);
3033 struct fc_host_attrs
*fc_host
= shost_to_fc_host(shost
);
3034 unsigned long flags
;
3037 spin_lock_irqsave(shost
->host_lock
, flags
);
3038 if (roles
& FC_PORT_ROLE_FCP_TARGET
) {
3039 if (rport
->scsi_target_id
== -1) {
3040 rport
->scsi_target_id
= fc_host
->next_target_id
++;
3042 } else if (!(rport
->roles
& FC_PORT_ROLE_FCP_TARGET
))
3046 rport
->roles
= roles
;
3048 spin_unlock_irqrestore(shost
->host_lock
, flags
);
3052 * There may have been a delete timer running on the
3053 * port. Ensure that it is cancelled as we now know
3054 * the port is an FCP Target.
3055 * Note: we know the rport exists and is in an online
3056 * state as the LLDD would not have had an rport
3057 * reference to pass us.
3059 * Take no action on the del_timer failure as the state
3060 * machine state change will validate the
3063 if (!cancel_delayed_work(&rport
->fail_io_work
))
3064 fc_flush_devloss(shost
);
3065 if (!cancel_delayed_work(&rport
->dev_loss_work
))
3066 fc_flush_devloss(shost
);
3068 spin_lock_irqsave(shost
->host_lock
, flags
);
3069 rport
->flags
&= ~(FC_RPORT_FAST_FAIL_TIMEDOUT
|
3070 FC_RPORT_DEVLOSS_PENDING
|
3071 FC_RPORT_DEVLOSS_CALLBK_DONE
);
3072 spin_unlock_irqrestore(shost
->host_lock
, flags
);
3074 /* ensure any stgt delete functions are done */
3075 fc_flush_work(shost
);
3077 scsi_target_unblock(&rport
->dev
, SDEV_RUNNING
);
3078 /* initiate a scan of the target */
3079 spin_lock_irqsave(shost
->host_lock
, flags
);
3080 rport
->flags
|= FC_RPORT_SCAN_PENDING
;
3081 scsi_queue_work(shost
, &rport
->scan_work
);
3082 spin_unlock_irqrestore(shost
->host_lock
, flags
);
3085 EXPORT_SYMBOL(fc_remote_port_rolechg
);
3088 * fc_timeout_deleted_rport - Timeout handler for a deleted remote port.
3089 * @work: rport target that failed to reappear in the allotted time.
3091 * Description: An attempt to delete a remote port blocks, and if it fails
3092 * to return in the allotted time this gets called.
3095 fc_timeout_deleted_rport(struct work_struct
*work
)
3097 struct fc_rport
*rport
=
3098 container_of(work
, struct fc_rport
, dev_loss_work
.work
);
3099 struct Scsi_Host
*shost
= rport_to_shost(rport
);
3100 struct fc_internal
*i
= to_fc_internal(shost
->transportt
);
3101 struct fc_host_attrs
*fc_host
= shost_to_fc_host(shost
);
3102 unsigned long flags
;
3103 int do_callback
= 0;
3105 spin_lock_irqsave(shost
->host_lock
, flags
);
3107 rport
->flags
&= ~FC_RPORT_DEVLOSS_PENDING
;
3110 * If the port is ONLINE, then it came back. If it was a SCSI
3111 * target, validate it still is. If not, tear down the
3112 * scsi_target on it.
3114 if ((rport
->port_state
== FC_PORTSTATE_ONLINE
) &&
3115 (rport
->scsi_target_id
!= -1) &&
3116 !(rport
->roles
& FC_PORT_ROLE_FCP_TARGET
)) {
3117 dev_printk(KERN_ERR
, &rport
->dev
,
3118 "blocked FC remote port time out: no longer"
3119 " a FCP target, removing starget\n");
3120 spin_unlock_irqrestore(shost
->host_lock
, flags
);
3121 scsi_target_unblock(&rport
->dev
, SDEV_TRANSPORT_OFFLINE
);
3122 fc_queue_work(shost
, &rport
->stgt_delete_work
);
3126 /* NOOP state - we're flushing workq's */
3127 if (rport
->port_state
!= FC_PORTSTATE_BLOCKED
) {
3128 spin_unlock_irqrestore(shost
->host_lock
, flags
);
3129 dev_printk(KERN_ERR
, &rport
->dev
,
3130 "blocked FC remote port time out: leaving"
3132 (rport
->scsi_target_id
!= -1) ? " and starget" : "");
3136 if ((fc_host
->tgtid_bind_type
== FC_TGTID_BIND_NONE
) ||
3137 (rport
->scsi_target_id
== -1)) {
3138 list_del(&rport
->peers
);
3139 rport
->port_state
= FC_PORTSTATE_DELETED
;
3140 dev_printk(KERN_ERR
, &rport
->dev
,
3141 "blocked FC remote port time out: removing"
3143 (rport
->scsi_target_id
!= -1) ? " and starget" : "");
3144 fc_queue_work(shost
, &rport
->rport_delete_work
);
3145 spin_unlock_irqrestore(shost
->host_lock
, flags
);
3149 dev_printk(KERN_ERR
, &rport
->dev
,
3150 "blocked FC remote port time out: removing target and "
3151 "saving binding\n");
3153 list_move_tail(&rport
->peers
, &fc_host
->rport_bindings
);
3156 * Note: We do not remove or clear the hostdata area. This allows
3157 * host-specific target data to persist along with the
3158 * scsi_target_id. It's up to the host to manage it's hostdata area.
3162 * Reinitialize port attributes that may change if the port comes back.
3164 rport
->maxframe_size
= -1;
3165 rport
->supported_classes
= FC_COS_UNSPECIFIED
;
3166 rport
->roles
= FC_PORT_ROLE_UNKNOWN
;
3167 rport
->port_state
= FC_PORTSTATE_NOTPRESENT
;
3168 rport
->flags
&= ~FC_RPORT_FAST_FAIL_TIMEDOUT
;
3171 * Pre-emptively kill I/O rather than waiting for the work queue
3172 * item to teardown the starget. (FCOE libFC folks prefer this
3173 * and to have the rport_port_id still set when it's done).
3175 spin_unlock_irqrestore(shost
->host_lock
, flags
);
3176 fc_terminate_rport_io(rport
);
3178 spin_lock_irqsave(shost
->host_lock
, flags
);
3180 if (rport
->port_state
== FC_PORTSTATE_NOTPRESENT
) { /* still missing */
3182 /* remove the identifiers that aren't used in the consisting binding */
3183 switch (fc_host
->tgtid_bind_type
) {
3184 case FC_TGTID_BIND_BY_WWPN
:
3185 rport
->node_name
= -1;
3186 rport
->port_id
= -1;
3188 case FC_TGTID_BIND_BY_WWNN
:
3189 rport
->port_name
= -1;
3190 rport
->port_id
= -1;
3192 case FC_TGTID_BIND_BY_ID
:
3193 rport
->node_name
= -1;
3194 rport
->port_name
= -1;
3196 case FC_TGTID_BIND_NONE
: /* to keep compiler happy */
3201 * As this only occurs if the remote port (scsi target)
3202 * went away and didn't come back - we'll remove
3203 * all attached scsi devices.
3205 rport
->flags
|= FC_RPORT_DEVLOSS_CALLBK_DONE
;
3206 fc_queue_work(shost
, &rport
->stgt_delete_work
);
3211 spin_unlock_irqrestore(shost
->host_lock
, flags
);
3214 * Notify the driver that the rport is now dead. The LLDD will
3215 * also guarantee that any communication to the rport is terminated
3217 * Note: we set the CALLBK_DONE flag above to correspond
3219 if (do_callback
&& i
->f
->dev_loss_tmo_callbk
)
3220 i
->f
->dev_loss_tmo_callbk(rport
);
3225 * fc_timeout_fail_rport_io - Timeout handler for a fast io failing on a disconnected SCSI target.
3226 * @work: rport to terminate io on.
3228 * Notes: Only requests the failure of the io, not that all are flushed
3229 * prior to returning.
3232 fc_timeout_fail_rport_io(struct work_struct
*work
)
3234 struct fc_rport
*rport
=
3235 container_of(work
, struct fc_rport
, fail_io_work
.work
);
3237 if (rport
->port_state
!= FC_PORTSTATE_BLOCKED
)
3240 rport
->flags
|= FC_RPORT_FAST_FAIL_TIMEDOUT
;
3241 fc_terminate_rport_io(rport
);
3245 * fc_scsi_scan_rport - called to perform a scsi scan on a remote port.
3246 * @work: remote port to be scanned.
3249 fc_scsi_scan_rport(struct work_struct
*work
)
3251 struct fc_rport
*rport
=
3252 container_of(work
, struct fc_rport
, scan_work
);
3253 struct Scsi_Host
*shost
= rport_to_shost(rport
);
3254 struct fc_internal
*i
= to_fc_internal(shost
->transportt
);
3255 unsigned long flags
;
3257 if ((rport
->port_state
== FC_PORTSTATE_ONLINE
) &&
3258 (rport
->roles
& FC_PORT_ROLE_FCP_TARGET
) &&
3259 !(i
->f
->disable_target_scan
)) {
3260 scsi_scan_target(&rport
->dev
, rport
->channel
,
3261 rport
->scsi_target_id
, SCAN_WILD_CARD
,
3265 spin_lock_irqsave(shost
->host_lock
, flags
);
3266 rport
->flags
&= ~FC_RPORT_SCAN_PENDING
;
3267 spin_unlock_irqrestore(shost
->host_lock
, flags
);
3271 * fc_block_rport() - Block SCSI eh thread for blocked fc_rport.
3272 * @rport: Remote port that scsi_eh is trying to recover.
3274 * This routine can be called from a FC LLD scsi_eh callback. It
3275 * blocks the scsi_eh thread until the fc_rport leaves the
3276 * FC_PORTSTATE_BLOCKED, or the fast_io_fail_tmo fires. This is
3277 * necessary to avoid the scsi_eh failing recovery actions for blocked
3278 * rports which would lead to offlined SCSI devices.
3280 * Returns: 0 if the fc_rport left the state FC_PORTSTATE_BLOCKED.
3281 * FAST_IO_FAIL if the fast_io_fail_tmo fired, this should be
3282 * passed back to scsi_eh.
3284 int fc_block_rport(struct fc_rport
*rport
)
3286 struct Scsi_Host
*shost
= rport_to_shost(rport
);
3287 unsigned long flags
;
3289 spin_lock_irqsave(shost
->host_lock
, flags
);
3290 while (rport
->port_state
== FC_PORTSTATE_BLOCKED
&&
3291 !(rport
->flags
& FC_RPORT_FAST_FAIL_TIMEDOUT
)) {
3292 spin_unlock_irqrestore(shost
->host_lock
, flags
);
3294 spin_lock_irqsave(shost
->host_lock
, flags
);
3296 spin_unlock_irqrestore(shost
->host_lock
, flags
);
3298 if (rport
->flags
& FC_RPORT_FAST_FAIL_TIMEDOUT
)
3299 return FAST_IO_FAIL
;
3303 EXPORT_SYMBOL(fc_block_rport
);
3306 * fc_block_scsi_eh - Block SCSI eh thread for blocked fc_rport
3307 * @cmnd: SCSI command that scsi_eh is trying to recover
3309 * This routine can be called from a FC LLD scsi_eh callback. It
3310 * blocks the scsi_eh thread until the fc_rport leaves the
3311 * FC_PORTSTATE_BLOCKED, or the fast_io_fail_tmo fires. This is
3312 * necessary to avoid the scsi_eh failing recovery actions for blocked
3313 * rports which would lead to offlined SCSI devices.
3315 * Returns: 0 if the fc_rport left the state FC_PORTSTATE_BLOCKED.
3316 * FAST_IO_FAIL if the fast_io_fail_tmo fired, this should be
3317 * passed back to scsi_eh.
3319 int fc_block_scsi_eh(struct scsi_cmnd
*cmnd
)
3321 struct fc_rport
*rport
= starget_to_rport(scsi_target(cmnd
->device
));
3323 if (WARN_ON_ONCE(!rport
))
3324 return FAST_IO_FAIL
;
3326 return fc_block_rport(rport
);
3328 EXPORT_SYMBOL(fc_block_scsi_eh
);
3331 * fc_vport_setup - allocates and creates a FC virtual port.
3332 * @shost: scsi host the virtual port is connected to.
3333 * @channel: Channel on shost port connected to.
3334 * @pdev: parent device for vport
3335 * @ids: The world wide names, FC4 port roles, etc for
3337 * @ret_vport: The pointer to the created vport.
3339 * Allocates and creates the vport structure, calls the parent host
3340 * to instantiate the vport, this completes w/ class and sysfs creation.
3343 * This routine assumes no locks are held on entry.
3346 fc_vport_setup(struct Scsi_Host
*shost
, int channel
, struct device
*pdev
,
3347 struct fc_vport_identifiers
*ids
, struct fc_vport
**ret_vport
)
3349 struct fc_host_attrs
*fc_host
= shost_to_fc_host(shost
);
3350 struct fc_internal
*fci
= to_fc_internal(shost
->transportt
);
3351 struct fc_vport
*vport
;
3353 unsigned long flags
;
3359 if ( ! fci
->f
->vport_create
)
3362 size
= (sizeof(struct fc_vport
) + fci
->f
->dd_fcvport_size
);
3363 vport
= kzalloc(size
, GFP_KERNEL
);
3364 if (unlikely(!vport
)) {
3365 printk(KERN_ERR
"%s: allocation failure\n", __func__
);
3369 vport
->vport_state
= FC_VPORT_UNKNOWN
;
3370 vport
->vport_last_state
= FC_VPORT_UNKNOWN
;
3371 vport
->node_name
= ids
->node_name
;
3372 vport
->port_name
= ids
->port_name
;
3373 vport
->roles
= ids
->roles
;
3374 vport
->vport_type
= ids
->vport_type
;
3375 if (fci
->f
->dd_fcvport_size
)
3376 vport
->dd_data
= &vport
[1];
3377 vport
->shost
= shost
;
3378 vport
->channel
= channel
;
3379 vport
->flags
= FC_VPORT_CREATING
;
3380 INIT_WORK(&vport
->vport_delete_work
, fc_vport_sched_delete
);
3382 spin_lock_irqsave(shost
->host_lock
, flags
);
3384 if (fc_host
->npiv_vports_inuse
>= fc_host
->max_npiv_vports
) {
3385 spin_unlock_irqrestore(shost
->host_lock
, flags
);
3389 fc_host
->npiv_vports_inuse
++;
3390 vport
->number
= fc_host
->next_vport_number
++;
3391 list_add_tail(&vport
->peers
, &fc_host
->vports
);
3392 scsi_host_get(shost
); /* for fc_host->vport list */
3394 spin_unlock_irqrestore(shost
->host_lock
, flags
);
3397 device_initialize(dev
); /* takes self reference */
3398 dev
->parent
= get_device(pdev
); /* takes parent reference */
3399 dev
->release
= fc_vport_dev_release
;
3400 dev_set_name(dev
, "vport-%d:%d-%d",
3401 shost
->host_no
, channel
, vport
->number
);
3402 transport_setup_device(dev
);
3404 error
= device_add(dev
);
3406 printk(KERN_ERR
"FC Virtual Port device_add failed\n");
3409 transport_add_device(dev
);
3410 transport_configure_device(dev
);
3412 error
= fci
->f
->vport_create(vport
, ids
->disable
);
3414 printk(KERN_ERR
"FC Virtual Port LLDD Create failed\n");
3415 goto delete_vport_all
;
3419 * if the parent isn't the physical adapter's Scsi_Host, ensure
3420 * the Scsi_Host at least contains a symlink to the vport.
3422 if (pdev
!= &shost
->shost_gendev
) {
3423 error
= sysfs_create_link(&shost
->shost_gendev
.kobj
,
3424 &dev
->kobj
, dev_name(dev
));
3427 "%s: Cannot create vport symlinks for "
3429 __func__
, dev_name(dev
), error
);
3431 spin_lock_irqsave(shost
->host_lock
, flags
);
3432 vport
->flags
&= ~FC_VPORT_CREATING
;
3433 spin_unlock_irqrestore(shost
->host_lock
, flags
);
3435 dev_printk(KERN_NOTICE
, pdev
,
3436 "%s created via shost%d channel %d\n", dev_name(dev
),
3437 shost
->host_no
, channel
);
3444 transport_remove_device(dev
);
3447 transport_destroy_device(dev
);
3448 spin_lock_irqsave(shost
->host_lock
, flags
);
3449 list_del(&vport
->peers
);
3450 scsi_host_put(shost
); /* for fc_host->vport list */
3451 fc_host
->npiv_vports_inuse
--;
3452 spin_unlock_irqrestore(shost
->host_lock
, flags
);
3453 put_device(dev
->parent
);
3460 * fc_vport_create - Admin App or LLDD requests creation of a vport
3461 * @shost: scsi host the virtual port is connected to.
3462 * @channel: channel on shost port connected to.
3463 * @ids: The world wide names, FC4 port roles, etc for
3467 * This routine assumes no locks are held on entry.
3470 fc_vport_create(struct Scsi_Host
*shost
, int channel
,
3471 struct fc_vport_identifiers
*ids
)
3474 struct fc_vport
*vport
;
3476 stat
= fc_vport_setup(shost
, channel
, &shost
->shost_gendev
,
3478 return stat
? NULL
: vport
;
3480 EXPORT_SYMBOL(fc_vport_create
);
3483 * fc_vport_terminate - Admin App or LLDD requests termination of a vport
3484 * @vport: fc_vport to be terminated
3486 * Calls the LLDD vport_delete() function, then deallocates and removes
3487 * the vport from the shost and object tree.
3490 * This routine assumes no locks are held on entry.
3493 fc_vport_terminate(struct fc_vport
*vport
)
3495 struct Scsi_Host
*shost
= vport_to_shost(vport
);
3496 struct fc_host_attrs
*fc_host
= shost_to_fc_host(shost
);
3497 struct fc_internal
*i
= to_fc_internal(shost
->transportt
);
3498 struct device
*dev
= &vport
->dev
;
3499 unsigned long flags
;
3502 if (i
->f
->vport_delete
)
3503 stat
= i
->f
->vport_delete(vport
);
3507 spin_lock_irqsave(shost
->host_lock
, flags
);
3508 vport
->flags
&= ~FC_VPORT_DELETING
;
3510 vport
->flags
|= FC_VPORT_DELETED
;
3511 list_del(&vport
->peers
);
3512 fc_host
->npiv_vports_inuse
--;
3513 scsi_host_put(shost
); /* for fc_host->vport list */
3515 spin_unlock_irqrestore(shost
->host_lock
, flags
);
3520 if (dev
->parent
!= &shost
->shost_gendev
)
3521 sysfs_remove_link(&shost
->shost_gendev
.kobj
, dev_name(dev
));
3522 transport_remove_device(dev
);
3524 transport_destroy_device(dev
);
3527 * Removing our self-reference should mean our
3528 * release function gets called, which will drop the remaining
3529 * parent reference and free the data structure.
3531 put_device(dev
); /* for self-reference */
3533 return 0; /* SUCCESS */
3535 EXPORT_SYMBOL(fc_vport_terminate
);
3538 * fc_vport_sched_delete - workq-based delete request for a vport
3539 * @work: vport to be deleted.
3542 fc_vport_sched_delete(struct work_struct
*work
)
3544 struct fc_vport
*vport
=
3545 container_of(work
, struct fc_vport
, vport_delete_work
);
3548 stat
= fc_vport_terminate(vport
);
3550 dev_printk(KERN_ERR
, vport
->dev
.parent
,
3551 "%s: %s could not be deleted created via "
3552 "shost%d channel %d - error %d\n", __func__
,
3553 dev_name(&vport
->dev
), vport
->shost
->host_no
,
3554 vport
->channel
, stat
);
3563 * fc_bsg_job_timeout - handler for when a bsg request timesout
3564 * @req: request that timed out
3566 static enum blk_eh_timer_return
3567 fc_bsg_job_timeout(struct request
*req
)
3569 struct bsg_job
*job
= blk_mq_rq_to_pdu(req
);
3570 struct Scsi_Host
*shost
= fc_bsg_to_shost(job
);
3571 struct fc_rport
*rport
= fc_bsg_to_rport(job
);
3572 struct fc_internal
*i
= to_fc_internal(shost
->transportt
);
3573 int err
= 0, inflight
= 0;
3575 if (rport
&& rport
->port_state
== FC_PORTSTATE_BLOCKED
)
3576 return BLK_EH_RESET_TIMER
;
3578 inflight
= bsg_job_get(job
);
3580 if (inflight
&& i
->f
->bsg_timeout
) {
3581 /* call LLDD to abort the i/o as it has timed out */
3582 err
= i
->f
->bsg_timeout(job
);
3583 if (err
== -EAGAIN
) {
3585 return BLK_EH_RESET_TIMER
;
3587 printk(KERN_ERR
"ERROR: FC BSG request timeout - LLD "
3588 "abort failed with status %d\n", err
);
3591 /* the blk_end_sync_io() doesn't check the error */
3593 return BLK_EH_NOT_HANDLED
;
3595 return BLK_EH_HANDLED
;
3599 * fc_bsg_host_dispatch - process fc host bsg requests and dispatch to LLDD
3600 * @shost: scsi host rport attached to
3601 * @job: bsg job to be processed
3603 static int fc_bsg_host_dispatch(struct Scsi_Host
*shost
, struct bsg_job
*job
)
3605 struct fc_internal
*i
= to_fc_internal(shost
->transportt
);
3606 struct fc_bsg_request
*bsg_request
= job
->request
;
3607 struct fc_bsg_reply
*bsg_reply
= job
->reply
;
3608 int cmdlen
= sizeof(uint32_t); /* start with length of msgcode */
3611 /* check if we really have all the request data needed */
3612 if (job
->request_len
< cmdlen
) {
3617 /* Validate the host command */
3618 switch (bsg_request
->msgcode
) {
3619 case FC_BSG_HST_ADD_RPORT
:
3620 cmdlen
+= sizeof(struct fc_bsg_host_add_rport
);
3623 case FC_BSG_HST_DEL_RPORT
:
3624 cmdlen
+= sizeof(struct fc_bsg_host_del_rport
);
3627 case FC_BSG_HST_ELS_NOLOGIN
:
3628 cmdlen
+= sizeof(struct fc_bsg_host_els
);
3629 /* there better be a xmt and rcv payloads */
3630 if ((!job
->request_payload
.payload_len
) ||
3631 (!job
->reply_payload
.payload_len
)) {
3638 cmdlen
+= sizeof(struct fc_bsg_host_ct
);
3639 /* there better be xmt and rcv payloads */
3640 if ((!job
->request_payload
.payload_len
) ||
3641 (!job
->reply_payload
.payload_len
)) {
3647 case FC_BSG_HST_VENDOR
:
3648 cmdlen
+= sizeof(struct fc_bsg_host_vendor
);
3649 if ((shost
->hostt
->vendor_id
== 0L) ||
3650 (bsg_request
->rqst_data
.h_vendor
.vendor_id
!=
3651 shost
->hostt
->vendor_id
)) {
3662 ret
= i
->f
->bsg_request(job
);
3667 /* return the errno failure code as the only status */
3668 BUG_ON(job
->reply_len
< sizeof(uint32_t));
3669 bsg_reply
->reply_payload_rcv_len
= 0;
3670 bsg_reply
->result
= ret
;
3671 job
->reply_len
= sizeof(uint32_t);
3672 bsg_job_done(job
, bsg_reply
->result
,
3673 bsg_reply
->reply_payload_rcv_len
);
3679 * fc_bsg_goose_queue - restart rport queue in case it was stopped
3680 * @rport: rport to be restarted
3683 fc_bsg_goose_queue(struct fc_rport
*rport
)
3685 struct request_queue
*q
= rport
->rqst_q
;
3686 unsigned long flags
;
3691 spin_lock_irqsave(q
->queue_lock
, flags
);
3692 blk_run_queue_async(q
);
3693 spin_unlock_irqrestore(q
->queue_lock
, flags
);
3697 * fc_bsg_rport_dispatch - process rport bsg requests and dispatch to LLDD
3698 * @shost: scsi host rport attached to
3699 * @job: bsg job to be processed
3701 static int fc_bsg_rport_dispatch(struct Scsi_Host
*shost
, struct bsg_job
*job
)
3703 struct fc_internal
*i
= to_fc_internal(shost
->transportt
);
3704 struct fc_bsg_request
*bsg_request
= job
->request
;
3705 struct fc_bsg_reply
*bsg_reply
= job
->reply
;
3706 int cmdlen
= sizeof(uint32_t); /* start with length of msgcode */
3709 /* check if we really have all the request data needed */
3710 if (job
->request_len
< cmdlen
) {
3712 goto fail_rport_msg
;
3715 /* Validate the rport command */
3716 switch (bsg_request
->msgcode
) {
3717 case FC_BSG_RPT_ELS
:
3718 cmdlen
+= sizeof(struct fc_bsg_rport_els
);
3722 cmdlen
+= sizeof(struct fc_bsg_rport_ct
);
3724 /* there better be xmt and rcv payloads */
3725 if ((!job
->request_payload
.payload_len
) ||
3726 (!job
->reply_payload
.payload_len
)) {
3728 goto fail_rport_msg
;
3733 goto fail_rport_msg
;
3736 ret
= i
->f
->bsg_request(job
);
3741 /* return the errno failure code as the only status */
3742 BUG_ON(job
->reply_len
< sizeof(uint32_t));
3743 bsg_reply
->reply_payload_rcv_len
= 0;
3744 bsg_reply
->result
= ret
;
3745 job
->reply_len
= sizeof(uint32_t);
3746 bsg_job_done(job
, bsg_reply
->result
,
3747 bsg_reply
->reply_payload_rcv_len
);
3751 static int fc_bsg_dispatch(struct bsg_job
*job
)
3753 struct Scsi_Host
*shost
= fc_bsg_to_shost(job
);
3755 if (scsi_is_fc_rport(job
->dev
))
3756 return fc_bsg_rport_dispatch(shost
, job
);
3758 return fc_bsg_host_dispatch(shost
, job
);
3762 * fc_bsg_hostadd - Create and add the bsg hooks so we can receive requests
3763 * @shost: shost for fc_host
3764 * @fc_host: fc_host adding the structures to
3767 fc_bsg_hostadd(struct Scsi_Host
*shost
, struct fc_host_attrs
*fc_host
)
3769 struct device
*dev
= &shost
->shost_gendev
;
3770 struct fc_internal
*i
= to_fc_internal(shost
->transportt
);
3771 struct request_queue
*q
;
3774 fc_host
->rqst_q
= NULL
;
3776 if (!i
->f
->bsg_request
)
3779 snprintf(bsg_name
, sizeof(bsg_name
),
3780 "fc_host%d", shost
->host_no
);
3782 q
= bsg_setup_queue(dev
, bsg_name
, fc_bsg_dispatch
, i
->f
->dd_bsg_size
,
3786 "fc_host%d: bsg interface failed to initialize - setup queue\n",
3790 __scsi_init_queue(shost
, q
);
3791 blk_queue_rq_timed_out(q
, fc_bsg_job_timeout
);
3792 blk_queue_rq_timeout(q
, FC_DEFAULT_BSG_TIMEOUT
);
3793 fc_host
->rqst_q
= q
;
3797 static int fc_bsg_rport_prep(struct request_queue
*q
, struct request
*req
)
3799 struct fc_rport
*rport
= dev_to_rport(q
->queuedata
);
3801 if (rport
->port_state
== FC_PORTSTATE_BLOCKED
&&
3802 !(rport
->flags
& FC_RPORT_FAST_FAIL_TIMEDOUT
))
3803 return BLKPREP_DEFER
;
3805 if (rport
->port_state
!= FC_PORTSTATE_ONLINE
)
3806 return BLKPREP_KILL
;
3812 * fc_bsg_rportadd - Create and add the bsg hooks so we can receive requests
3813 * @shost: shost that rport is attached to
3814 * @rport: rport that the bsg hooks are being attached to
3817 fc_bsg_rportadd(struct Scsi_Host
*shost
, struct fc_rport
*rport
)
3819 struct device
*dev
= &rport
->dev
;
3820 struct fc_internal
*i
= to_fc_internal(shost
->transportt
);
3821 struct request_queue
*q
;
3823 rport
->rqst_q
= NULL
;
3825 if (!i
->f
->bsg_request
)
3828 q
= bsg_setup_queue(dev
, NULL
, fc_bsg_dispatch
, i
->f
->dd_bsg_size
,
3831 dev_err(dev
, "failed to setup bsg queue\n");
3834 __scsi_init_queue(shost
, q
);
3835 blk_queue_prep_rq(q
, fc_bsg_rport_prep
);
3836 blk_queue_rq_timed_out(q
, fc_bsg_job_timeout
);
3837 blk_queue_rq_timeout(q
, BLK_DEFAULT_SG_TIMEOUT
);
3844 * fc_bsg_remove - Deletes the bsg hooks on fchosts/rports
3845 * @q: the request_queue that is to be torn down.
3848 * Before unregistering the queue empty any requests that are blocked
3853 fc_bsg_remove(struct request_queue
*q
)
3856 bsg_unregister_queue(q
);
3857 blk_cleanup_queue(q
);
3862 /* Original Author: Martin Hicks */
3863 MODULE_AUTHOR("James Smart");
3864 MODULE_DESCRIPTION("FC Transport Attributes");
3865 MODULE_LICENSE("GPL");
3867 module_init(fc_transport_init
);
3868 module_exit(fc_transport_exit
);