2 * FiberChannel transport specific attributes exported to sysfs.
4 * Copyright (c) 2003 Silicon Graphics, Inc. All rights reserved.
6 * This program is free software; you can redistribute it and/or modify
7 * it under the terms of the GNU General Public License as published by
8 * the Free Software Foundation; either version 2 of the License, or
9 * (at your option) any later version.
11 * This program is distributed in the hope that it will be useful,
12 * but WITHOUT ANY WARRANTY; without even the implied warranty of
13 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
14 * GNU General Public License for more details.
16 * You should have received a copy of the GNU General Public License
17 * along with this program; if not, write to the Free Software
18 * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
22 * Copyright (C) 2004-2007 James Smart, Emulex Corporation
23 * Rewrite for host, target, device, and remote port attributes,
24 * statistics, and service functions...
28 #include <linux/module.h>
29 #include <linux/init.h>
30 #include <scsi/scsi_device.h>
31 #include <scsi/scsi_host.h>
32 #include <scsi/scsi_transport.h>
33 #include <scsi/scsi_transport_fc.h>
34 #include <scsi/scsi_cmnd.h>
35 #include <linux/netlink.h>
36 #include <net/netlink.h>
37 #include <scsi/scsi_netlink_fc.h>
38 #include "scsi_priv.h"
39 #include "scsi_transport_fc_internal.h"
41 static int fc_queue_work(struct Scsi_Host
*, struct work_struct
*);
42 static void fc_vport_sched_delete(struct work_struct
*work
);
45 * This is a temporary carrier for creating a vport. It will eventually
46 * be replaced by a real message definition for sgio or netlink.
48 * fc_vport_identifiers: This set of data contains all elements
49 * to uniquely identify and instantiate a FC virtual port.
52 * symbolic_name: The driver is to append the symbolic_name string data
53 * to the symbolic_node_name data that it generates by default.
54 * the resulting combination should then be registered with the switch.
55 * It is expected that things like Xen may stuff a VM title into
58 struct fc_vport_identifiers
{
63 enum fc_port_type vport_type
; /* only FC_PORTTYPE_NPIV allowed */
64 char symbolic_name
[FC_VPORT_SYMBOLIC_NAMELEN
];
67 static int fc_vport_create(struct Scsi_Host
*shost
, int channel
,
68 struct device
*pdev
, struct fc_vport_identifiers
*ids
,
69 struct fc_vport
**vport
);
72 * Redefine so that we can have same named attributes in the
73 * sdev/starget/host objects.
75 #define FC_DEVICE_ATTR(_prefix,_name,_mode,_show,_store) \
76 struct device_attribute device_attr_##_prefix##_##_name = \
77 __ATTR(_name,_mode,_show,_store)
79 #define fc_enum_name_search(title, table_type, table) \
80 static const char *get_fc_##title##_name(enum table_type table_key) \
85 for (i = 0; i < ARRAY_SIZE(table); i++) { \
86 if (table[i].value == table_key) { \
87 name = table[i].name; \
94 #define fc_enum_name_match(title, table_type, table) \
95 static int get_fc_##title##_match(const char *table_key, \
96 enum table_type *value) \
100 for (i = 0; i < ARRAY_SIZE(table); i++) { \
101 if (strncmp(table_key, table[i].name, \
102 table[i].matchlen) == 0) { \
103 *value = table[i].value; \
104 return 0; /* success */ \
107 return 1; /* failure */ \
111 /* Convert fc_port_type values to ascii string name */
113 enum fc_port_type value
;
115 } fc_port_type_names
[] = {
116 { FC_PORTTYPE_UNKNOWN
, "Unknown" },
117 { FC_PORTTYPE_OTHER
, "Other" },
118 { FC_PORTTYPE_NOTPRESENT
, "Not Present" },
119 { FC_PORTTYPE_NPORT
, "NPort (fabric via point-to-point)" },
120 { FC_PORTTYPE_NLPORT
, "NLPort (fabric via loop)" },
121 { FC_PORTTYPE_LPORT
, "LPort (private loop)" },
122 { FC_PORTTYPE_PTP
, "Point-To-Point (direct nport connection" },
123 { FC_PORTTYPE_NPIV
, "NPIV VPORT" },
125 fc_enum_name_search(port_type
, fc_port_type
, fc_port_type_names
)
126 #define FC_PORTTYPE_MAX_NAMELEN 50
128 /* Reuse fc_port_type enum function for vport_type */
129 #define get_fc_vport_type_name get_fc_port_type_name
132 /* Convert fc_host_event_code values to ascii string name */
133 static const struct {
134 enum fc_host_event_code value
;
136 } fc_host_event_code_names
[] = {
137 { FCH_EVT_LIP
, "lip" },
138 { FCH_EVT_LINKUP
, "link_up" },
139 { FCH_EVT_LINKDOWN
, "link_down" },
140 { FCH_EVT_LIPRESET
, "lip_reset" },
141 { FCH_EVT_RSCN
, "rscn" },
142 { FCH_EVT_ADAPTER_CHANGE
, "adapter_chg" },
143 { FCH_EVT_PORT_UNKNOWN
, "port_unknown" },
144 { FCH_EVT_PORT_ONLINE
, "port_online" },
145 { FCH_EVT_PORT_OFFLINE
, "port_offline" },
146 { FCH_EVT_PORT_FABRIC
, "port_fabric" },
147 { FCH_EVT_LINK_UNKNOWN
, "link_unknown" },
148 { FCH_EVT_VENDOR_UNIQUE
, "vendor_unique" },
150 fc_enum_name_search(host_event_code
, fc_host_event_code
,
151 fc_host_event_code_names
)
152 #define FC_HOST_EVENT_CODE_MAX_NAMELEN 30
155 /* Convert fc_port_state values to ascii string name */
157 enum fc_port_state value
;
159 } fc_port_state_names
[] = {
160 { FC_PORTSTATE_UNKNOWN
, "Unknown" },
161 { FC_PORTSTATE_NOTPRESENT
, "Not Present" },
162 { FC_PORTSTATE_ONLINE
, "Online" },
163 { FC_PORTSTATE_OFFLINE
, "Offline" },
164 { FC_PORTSTATE_BLOCKED
, "Blocked" },
165 { FC_PORTSTATE_BYPASSED
, "Bypassed" },
166 { FC_PORTSTATE_DIAGNOSTICS
, "Diagnostics" },
167 { FC_PORTSTATE_LINKDOWN
, "Linkdown" },
168 { FC_PORTSTATE_ERROR
, "Error" },
169 { FC_PORTSTATE_LOOPBACK
, "Loopback" },
170 { FC_PORTSTATE_DELETED
, "Deleted" },
172 fc_enum_name_search(port_state
, fc_port_state
, fc_port_state_names
)
173 #define FC_PORTSTATE_MAX_NAMELEN 20
176 /* Convert fc_vport_state values to ascii string name */
178 enum fc_vport_state value
;
180 } fc_vport_state_names
[] = {
181 { FC_VPORT_UNKNOWN
, "Unknown" },
182 { FC_VPORT_ACTIVE
, "Active" },
183 { FC_VPORT_DISABLED
, "Disabled" },
184 { FC_VPORT_LINKDOWN
, "Linkdown" },
185 { FC_VPORT_INITIALIZING
, "Initializing" },
186 { FC_VPORT_NO_FABRIC_SUPP
, "No Fabric Support" },
187 { FC_VPORT_NO_FABRIC_RSCS
, "No Fabric Resources" },
188 { FC_VPORT_FABRIC_LOGOUT
, "Fabric Logout" },
189 { FC_VPORT_FABRIC_REJ_WWN
, "Fabric Rejected WWN" },
190 { FC_VPORT_FAILED
, "VPort Failed" },
192 fc_enum_name_search(vport_state
, fc_vport_state
, fc_vport_state_names
)
193 #define FC_VPORTSTATE_MAX_NAMELEN 24
195 /* Reuse fc_vport_state enum function for vport_last_state */
196 #define get_fc_vport_last_state_name get_fc_vport_state_name
199 /* Convert fc_tgtid_binding_type values to ascii string name */
200 static const struct {
201 enum fc_tgtid_binding_type value
;
204 } fc_tgtid_binding_type_names
[] = {
205 { FC_TGTID_BIND_NONE
, "none", 4 },
206 { FC_TGTID_BIND_BY_WWPN
, "wwpn (World Wide Port Name)", 4 },
207 { FC_TGTID_BIND_BY_WWNN
, "wwnn (World Wide Node Name)", 4 },
208 { FC_TGTID_BIND_BY_ID
, "port_id (FC Address)", 7 },
210 fc_enum_name_search(tgtid_bind_type
, fc_tgtid_binding_type
,
211 fc_tgtid_binding_type_names
)
212 fc_enum_name_match(tgtid_bind_type
, fc_tgtid_binding_type
,
213 fc_tgtid_binding_type_names
)
214 #define FC_BINDTYPE_MAX_NAMELEN 30
217 #define fc_bitfield_name_search(title, table) \
219 get_fc_##title##_names(u32 table_key, char *buf) \
225 for (i = 0; i < ARRAY_SIZE(table); i++) { \
226 if (table[i].value & table_key) { \
227 len += sprintf(buf + len, "%s%s", \
228 prefix, table[i].name); \
232 len += sprintf(buf + len, "\n"); \
237 /* Convert FC_COS bit values to ascii string name */
238 static const struct {
242 { FC_COS_CLASS1
, "Class 1" },
243 { FC_COS_CLASS2
, "Class 2" },
244 { FC_COS_CLASS3
, "Class 3" },
245 { FC_COS_CLASS4
, "Class 4" },
246 { FC_COS_CLASS6
, "Class 6" },
248 fc_bitfield_name_search(cos
, fc_cos_names
)
251 /* Convert FC_PORTSPEED bit values to ascii string name */
252 static const struct {
255 } fc_port_speed_names
[] = {
256 { FC_PORTSPEED_1GBIT
, "1 Gbit" },
257 { FC_PORTSPEED_2GBIT
, "2 Gbit" },
258 { FC_PORTSPEED_4GBIT
, "4 Gbit" },
259 { FC_PORTSPEED_10GBIT
, "10 Gbit" },
260 { FC_PORTSPEED_8GBIT
, "8 Gbit" },
261 { FC_PORTSPEED_16GBIT
, "16 Gbit" },
262 { FC_PORTSPEED_NOT_NEGOTIATED
, "Not Negotiated" },
264 fc_bitfield_name_search(port_speed
, fc_port_speed_names
)
268 show_fc_fc4s (char *buf
, u8
*fc4_list
)
272 for (i
= 0; i
< FC_FC4_LIST_SIZE
; i
++, fc4_list
++)
273 len
+= sprintf(buf
+ len
, "0x%02x ", *fc4_list
);
274 len
+= sprintf(buf
+ len
, "\n");
279 /* Convert FC_PORT_ROLE bit values to ascii string name */
280 static const struct {
283 } fc_port_role_names
[] = {
284 { FC_PORT_ROLE_FCP_TARGET
, "FCP Target" },
285 { FC_PORT_ROLE_FCP_INITIATOR
, "FCP Initiator" },
286 { FC_PORT_ROLE_IP_PORT
, "IP Port" },
288 fc_bitfield_name_search(port_roles
, fc_port_role_names
)
291 * Define roles that are specific to port_id. Values are relative to ROLE_MASK.
293 #define FC_WELLKNOWN_PORTID_MASK 0xfffff0
294 #define FC_WELLKNOWN_ROLE_MASK 0x00000f
295 #define FC_FPORT_PORTID 0x00000e
296 #define FC_FABCTLR_PORTID 0x00000d
297 #define FC_DIRSRVR_PORTID 0x00000c
298 #define FC_TIMESRVR_PORTID 0x00000b
299 #define FC_MGMTSRVR_PORTID 0x00000a
302 static void fc_timeout_deleted_rport(struct work_struct
*work
);
303 static void fc_timeout_fail_rport_io(struct work_struct
*work
);
304 static void fc_scsi_scan_rport(struct work_struct
*work
);
307 * Attribute counts pre object type...
308 * Increase these values if you add attributes
310 #define FC_STARGET_NUM_ATTRS 3
311 #define FC_RPORT_NUM_ATTRS 10
312 #define FC_VPORT_NUM_ATTRS 9
313 #define FC_HOST_NUM_ATTRS 21
316 struct scsi_transport_template t
;
317 struct fc_function_template
*f
;
320 * For attributes : each object has :
321 * An array of the actual attributes structures
322 * An array of null-terminated pointers to the attribute
323 * structures - used for mid-layer interaction.
325 * The attribute containers for the starget and host are are
326 * part of the midlayer. As the remote port is specific to the
327 * fc transport, we must provide the attribute container.
329 struct device_attribute private_starget_attrs
[
330 FC_STARGET_NUM_ATTRS
];
331 struct device_attribute
*starget_attrs
[FC_STARGET_NUM_ATTRS
+ 1];
333 struct device_attribute private_host_attrs
[FC_HOST_NUM_ATTRS
];
334 struct device_attribute
*host_attrs
[FC_HOST_NUM_ATTRS
+ 1];
336 struct transport_container rport_attr_cont
;
337 struct device_attribute private_rport_attrs
[FC_RPORT_NUM_ATTRS
];
338 struct device_attribute
*rport_attrs
[FC_RPORT_NUM_ATTRS
+ 1];
340 struct transport_container vport_attr_cont
;
341 struct device_attribute private_vport_attrs
[FC_VPORT_NUM_ATTRS
];
342 struct device_attribute
*vport_attrs
[FC_VPORT_NUM_ATTRS
+ 1];
345 #define to_fc_internal(tmpl) container_of(tmpl, struct fc_internal, t)
347 static int fc_target_setup(struct transport_container
*tc
, struct device
*dev
,
350 struct scsi_target
*starget
= to_scsi_target(dev
);
351 struct fc_rport
*rport
= starget_to_rport(starget
);
354 * if parent is remote port, use values from remote port.
355 * Otherwise, this host uses the fc_transport, but not the
356 * remote port interface. As such, initialize to known non-values.
359 fc_starget_node_name(starget
) = rport
->node_name
;
360 fc_starget_port_name(starget
) = rport
->port_name
;
361 fc_starget_port_id(starget
) = rport
->port_id
;
363 fc_starget_node_name(starget
) = -1;
364 fc_starget_port_name(starget
) = -1;
365 fc_starget_port_id(starget
) = -1;
371 static DECLARE_TRANSPORT_CLASS(fc_transport_class
,
377 static int fc_host_setup(struct transport_container
*tc
, struct device
*dev
,
380 struct Scsi_Host
*shost
= dev_to_shost(dev
);
381 struct fc_host_attrs
*fc_host
= shost_to_fc_host(shost
);
384 * Set default values easily detected by the midlayer as
385 * failure cases. The scsi lldd is responsible for initializing
386 * all transport attributes to valid values per host.
388 fc_host
->node_name
= -1;
389 fc_host
->port_name
= -1;
390 fc_host
->permanent_port_name
= -1;
391 fc_host
->supported_classes
= FC_COS_UNSPECIFIED
;
392 memset(fc_host
->supported_fc4s
, 0,
393 sizeof(fc_host
->supported_fc4s
));
394 fc_host
->supported_speeds
= FC_PORTSPEED_UNKNOWN
;
395 fc_host
->maxframe_size
= -1;
396 fc_host
->max_npiv_vports
= 0;
397 memset(fc_host
->serial_number
, 0,
398 sizeof(fc_host
->serial_number
));
400 fc_host
->port_id
= -1;
401 fc_host
->port_type
= FC_PORTTYPE_UNKNOWN
;
402 fc_host
->port_state
= FC_PORTSTATE_UNKNOWN
;
403 memset(fc_host
->active_fc4s
, 0,
404 sizeof(fc_host
->active_fc4s
));
405 fc_host
->speed
= FC_PORTSPEED_UNKNOWN
;
406 fc_host
->fabric_name
= -1;
407 memset(fc_host
->symbolic_name
, 0, sizeof(fc_host
->symbolic_name
));
408 memset(fc_host
->system_hostname
, 0, sizeof(fc_host
->system_hostname
));
410 fc_host
->tgtid_bind_type
= FC_TGTID_BIND_BY_WWPN
;
412 INIT_LIST_HEAD(&fc_host
->rports
);
413 INIT_LIST_HEAD(&fc_host
->rport_bindings
);
414 INIT_LIST_HEAD(&fc_host
->vports
);
415 fc_host
->next_rport_number
= 0;
416 fc_host
->next_target_id
= 0;
417 fc_host
->next_vport_number
= 0;
418 fc_host
->npiv_vports_inuse
= 0;
420 snprintf(fc_host
->work_q_name
, KOBJ_NAME_LEN
, "fc_wq_%d",
422 fc_host
->work_q
= create_singlethread_workqueue(
423 fc_host
->work_q_name
);
424 if (!fc_host
->work_q
)
427 snprintf(fc_host
->devloss_work_q_name
, KOBJ_NAME_LEN
, "fc_dl_%d",
429 fc_host
->devloss_work_q
= create_singlethread_workqueue(
430 fc_host
->devloss_work_q_name
);
431 if (!fc_host
->devloss_work_q
) {
432 destroy_workqueue(fc_host
->work_q
);
433 fc_host
->work_q
= NULL
;
440 static DECLARE_TRANSPORT_CLASS(fc_host_class
,
447 * Setup and Remove actions for remote ports are handled
448 * in the service functions below.
450 static DECLARE_TRANSPORT_CLASS(fc_rport_class
,
457 * Setup and Remove actions for virtual ports are handled
458 * in the service functions below.
460 static DECLARE_TRANSPORT_CLASS(fc_vport_class
,
471 * dev_loss_tmo: the default number of seconds that the FC transport
472 * should insulate the loss of a remote port.
473 * The maximum will be capped by the value of SCSI_DEVICE_BLOCK_MAX_TIMEOUT.
475 static unsigned int fc_dev_loss_tmo
= 60; /* seconds */
477 module_param_named(dev_loss_tmo
, fc_dev_loss_tmo
, uint
, S_IRUGO
|S_IWUSR
);
478 MODULE_PARM_DESC(dev_loss_tmo
,
479 "Maximum number of seconds that the FC transport should"
480 " insulate the loss of a remote port. Once this value is"
481 " exceeded, the scsi target is removed. Value should be"
482 " between 1 and SCSI_DEVICE_BLOCK_MAX_TIMEOUT.");
485 * Netlink Infrastructure
488 static atomic_t fc_event_seq
;
491 * fc_get_event_number - Obtain the next sequential FC event number
494 * We could have inlined this, but it would have required fc_event_seq to
495 * be exposed. For now, live with the subroutine call.
496 * Atomic used to avoid lock/unlock...
499 fc_get_event_number(void)
501 return atomic_add_return(1, &fc_event_seq
);
503 EXPORT_SYMBOL(fc_get_event_number
);
507 * fc_host_post_event - called to post an even on an fc_host.
508 * @shost: host the event occurred on
509 * @event_number: fc event number obtained from get_fc_event_number()
510 * @event_code: fc_host event being posted
511 * @event_data: 32bits of data for the event being posted
514 * This routine assumes no locks are held on entry.
517 fc_host_post_event(struct Scsi_Host
*shost
, u32 event_number
,
518 enum fc_host_event_code event_code
, u32 event_data
)
521 struct nlmsghdr
*nlh
;
522 struct fc_nl_event
*event
;
532 len
= FC_NL_MSGALIGN(sizeof(*event
));
533 skblen
= NLMSG_SPACE(len
);
535 skb
= alloc_skb(skblen
, GFP_KERNEL
);
541 nlh
= nlmsg_put(skb
, 0, 0, SCSI_TRANSPORT_MSG
,
542 skblen
- sizeof(*nlh
), 0);
547 event
= NLMSG_DATA(nlh
);
549 INIT_SCSI_NL_HDR(&event
->snlh
, SCSI_NL_TRANSPORT_FC
,
550 FC_NL_ASYNC_EVENT
, len
);
551 event
->seconds
= get_seconds();
552 event
->vendor_id
= 0;
553 event
->host_no
= shost
->host_no
;
554 event
->event_datalen
= sizeof(u32
); /* bytes */
555 event
->event_num
= event_number
;
556 event
->event_code
= event_code
;
557 event
->event_data
= event_data
;
559 err
= nlmsg_multicast(scsi_nl_sock
, skb
, 0, SCSI_NL_GRP_FC_EVENTS
,
561 if (err
&& (err
!= -ESRCH
)) /* filter no recipient errors */
562 /* nlmsg_multicast already kfree_skb'd */
570 name
= get_fc_host_event_code_name(event_code
);
572 "%s: Dropped Event : host %d %s data 0x%08x - err %d\n",
573 __FUNCTION__
, shost
->host_no
,
574 (name
) ? name
: "<unknown>", event_data
, err
);
577 EXPORT_SYMBOL(fc_host_post_event
);
581 * fc_host_post_vendor_event - called to post a vendor unique event on an fc_host
582 * @shost: host the event occurred on
583 * @event_number: fc event number obtained from get_fc_event_number()
584 * @data_len: amount, in bytes, of vendor unique data
585 * @data_buf: pointer to vendor unique data
586 * @vendor_id: Vendor id
589 * This routine assumes no locks are held on entry.
592 fc_host_post_vendor_event(struct Scsi_Host
*shost
, u32 event_number
,
593 u32 data_len
, char * data_buf
, u64 vendor_id
)
596 struct nlmsghdr
*nlh
;
597 struct fc_nl_event
*event
;
603 goto send_vendor_fail
;
606 len
= FC_NL_MSGALIGN(sizeof(*event
) + data_len
);
607 skblen
= NLMSG_SPACE(len
);
609 skb
= alloc_skb(skblen
, GFP_KERNEL
);
612 goto send_vendor_fail
;
615 nlh
= nlmsg_put(skb
, 0, 0, SCSI_TRANSPORT_MSG
,
616 skblen
- sizeof(*nlh
), 0);
619 goto send_vendor_fail_skb
;
621 event
= NLMSG_DATA(nlh
);
623 INIT_SCSI_NL_HDR(&event
->snlh
, SCSI_NL_TRANSPORT_FC
,
624 FC_NL_ASYNC_EVENT
, len
);
625 event
->seconds
= get_seconds();
626 event
->vendor_id
= vendor_id
;
627 event
->host_no
= shost
->host_no
;
628 event
->event_datalen
= data_len
; /* bytes */
629 event
->event_num
= event_number
;
630 event
->event_code
= FCH_EVT_VENDOR_UNIQUE
;
631 memcpy(&event
->event_data
, data_buf
, data_len
);
633 err
= nlmsg_multicast(scsi_nl_sock
, skb
, 0, SCSI_NL_GRP_FC_EVENTS
,
635 if (err
&& (err
!= -ESRCH
)) /* filter no recipient errors */
636 /* nlmsg_multicast already kfree_skb'd */
637 goto send_vendor_fail
;
641 send_vendor_fail_skb
:
645 "%s: Dropped Event : host %d vendor_unique - err %d\n",
646 __FUNCTION__
, shost
->host_no
, err
);
649 EXPORT_SYMBOL(fc_host_post_vendor_event
);
653 static __init
int fc_transport_init(void)
657 atomic_set(&fc_event_seq
, 0);
659 error
= transport_class_register(&fc_host_class
);
662 error
= transport_class_register(&fc_vport_class
);
665 error
= transport_class_register(&fc_rport_class
);
668 return transport_class_register(&fc_transport_class
);
671 static void __exit
fc_transport_exit(void)
673 transport_class_unregister(&fc_transport_class
);
674 transport_class_unregister(&fc_rport_class
);
675 transport_class_unregister(&fc_host_class
);
676 transport_class_unregister(&fc_vport_class
);
680 * FC Remote Port Attribute Management
683 #define fc_rport_show_function(field, format_string, sz, cast) \
685 show_fc_rport_##field (struct device *dev, \
686 struct device_attribute *attr, char *buf) \
688 struct fc_rport *rport = transport_class_to_rport(dev); \
689 struct Scsi_Host *shost = rport_to_shost(rport); \
690 struct fc_internal *i = to_fc_internal(shost->transportt); \
691 if ((i->f->get_rport_##field) && \
692 !((rport->port_state == FC_PORTSTATE_BLOCKED) || \
693 (rport->port_state == FC_PORTSTATE_DELETED) || \
694 (rport->port_state == FC_PORTSTATE_NOTPRESENT))) \
695 i->f->get_rport_##field(rport); \
696 return snprintf(buf, sz, format_string, cast rport->field); \
699 #define fc_rport_store_function(field) \
701 store_fc_rport_##field(struct device *dev, \
702 struct device_attribute *attr, \
703 const char *buf, size_t count) \
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); \
710 if ((rport->port_state == FC_PORTSTATE_BLOCKED) || \
711 (rport->port_state == FC_PORTSTATE_DELETED) || \
712 (rport->port_state == FC_PORTSTATE_NOTPRESENT)) \
714 val = simple_strtoul(buf, &cp, 0); \
715 if (*cp && (*cp != '\n')) \
717 i->f->set_rport_##field(rport, val); \
721 #define fc_rport_rd_attr(field, format_string, sz) \
722 fc_rport_show_function(field, format_string, sz, ) \
723 static FC_DEVICE_ATTR(rport, field, S_IRUGO, \
724 show_fc_rport_##field, NULL)
726 #define fc_rport_rd_attr_cast(field, format_string, sz, cast) \
727 fc_rport_show_function(field, format_string, sz, (cast)) \
728 static FC_DEVICE_ATTR(rport, field, S_IRUGO, \
729 show_fc_rport_##field, NULL)
731 #define fc_rport_rw_attr(field, format_string, sz) \
732 fc_rport_show_function(field, format_string, sz, ) \
733 fc_rport_store_function(field) \
734 static FC_DEVICE_ATTR(rport, field, S_IRUGO | S_IWUSR, \
735 show_fc_rport_##field, \
736 store_fc_rport_##field)
739 #define fc_private_rport_show_function(field, format_string, sz, cast) \
741 show_fc_rport_##field (struct device *dev, \
742 struct device_attribute *attr, char *buf) \
744 struct fc_rport *rport = transport_class_to_rport(dev); \
745 return snprintf(buf, sz, format_string, cast rport->field); \
748 #define fc_private_rport_rd_attr(field, format_string, sz) \
749 fc_private_rport_show_function(field, format_string, sz, ) \
750 static FC_DEVICE_ATTR(rport, field, S_IRUGO, \
751 show_fc_rport_##field, NULL)
753 #define fc_private_rport_rd_attr_cast(field, format_string, sz, cast) \
754 fc_private_rport_show_function(field, format_string, sz, (cast)) \
755 static FC_DEVICE_ATTR(rport, field, S_IRUGO, \
756 show_fc_rport_##field, NULL)
759 #define fc_private_rport_rd_enum_attr(title, maxlen) \
761 show_fc_rport_##title (struct device *dev, \
762 struct device_attribute *attr, char *buf) \
764 struct fc_rport *rport = transport_class_to_rport(dev); \
766 name = get_fc_##title##_name(rport->title); \
769 return snprintf(buf, maxlen, "%s\n", name); \
771 static FC_DEVICE_ATTR(rport, title, S_IRUGO, \
772 show_fc_rport_##title, NULL)
775 #define SETUP_RPORT_ATTRIBUTE_RD(field) \
776 i->private_rport_attrs[count] = device_attr_rport_##field; \
777 i->private_rport_attrs[count].attr.mode = S_IRUGO; \
778 i->private_rport_attrs[count].store = NULL; \
779 i->rport_attrs[count] = &i->private_rport_attrs[count]; \
780 if (i->f->show_rport_##field) \
783 #define SETUP_PRIVATE_RPORT_ATTRIBUTE_RD(field) \
784 i->private_rport_attrs[count] = device_attr_rport_##field; \
785 i->private_rport_attrs[count].attr.mode = S_IRUGO; \
786 i->private_rport_attrs[count].store = NULL; \
787 i->rport_attrs[count] = &i->private_rport_attrs[count]; \
790 #define SETUP_RPORT_ATTRIBUTE_RW(field) \
791 i->private_rport_attrs[count] = device_attr_rport_##field; \
792 if (!i->f->set_rport_##field) { \
793 i->private_rport_attrs[count].attr.mode = S_IRUGO; \
794 i->private_rport_attrs[count].store = NULL; \
796 i->rport_attrs[count] = &i->private_rport_attrs[count]; \
797 if (i->f->show_rport_##field) \
800 #define SETUP_PRIVATE_RPORT_ATTRIBUTE_RW(field) \
802 i->private_rport_attrs[count] = device_attr_rport_##field; \
803 i->rport_attrs[count] = &i->private_rport_attrs[count]; \
808 /* The FC Transport Remote Port Attributes: */
810 /* Fixed Remote Port Attributes */
812 fc_private_rport_rd_attr(maxframe_size
, "%u bytes\n", 20);
815 show_fc_rport_supported_classes (struct device
*dev
,
816 struct device_attribute
*attr
, char *buf
)
818 struct fc_rport
*rport
= transport_class_to_rport(dev
);
819 if (rport
->supported_classes
== FC_COS_UNSPECIFIED
)
820 return snprintf(buf
, 20, "unspecified\n");
821 return get_fc_cos_names(rport
->supported_classes
, buf
);
823 static FC_DEVICE_ATTR(rport
, supported_classes
, S_IRUGO
,
824 show_fc_rport_supported_classes
, NULL
);
826 /* Dynamic Remote Port Attributes */
829 * dev_loss_tmo attribute
831 fc_rport_show_function(dev_loss_tmo
, "%d\n", 20, )
833 store_fc_rport_dev_loss_tmo(struct device
*dev
, struct device_attribute
*attr
,
834 const char *buf
, size_t count
)
837 struct fc_rport
*rport
= transport_class_to_rport(dev
);
838 struct Scsi_Host
*shost
= rport_to_shost(rport
);
839 struct fc_internal
*i
= to_fc_internal(shost
->transportt
);
841 if ((rport
->port_state
== FC_PORTSTATE_BLOCKED
) ||
842 (rport
->port_state
== FC_PORTSTATE_DELETED
) ||
843 (rport
->port_state
== FC_PORTSTATE_NOTPRESENT
))
845 val
= simple_strtoul(buf
, &cp
, 0);
846 if ((*cp
&& (*cp
!= '\n')) ||
847 (val
< 0) || (val
> SCSI_DEVICE_BLOCK_MAX_TIMEOUT
))
849 i
->f
->set_rport_dev_loss_tmo(rport
, val
);
852 static FC_DEVICE_ATTR(rport
, dev_loss_tmo
, S_IRUGO
| S_IWUSR
,
853 show_fc_rport_dev_loss_tmo
, store_fc_rport_dev_loss_tmo
);
856 /* Private Remote Port Attributes */
858 fc_private_rport_rd_attr_cast(node_name
, "0x%llx\n", 20, unsigned long long);
859 fc_private_rport_rd_attr_cast(port_name
, "0x%llx\n", 20, unsigned long long);
860 fc_private_rport_rd_attr(port_id
, "0x%06x\n", 20);
863 show_fc_rport_roles (struct device
*dev
, struct device_attribute
*attr
,
866 struct fc_rport
*rport
= transport_class_to_rport(dev
);
868 /* identify any roles that are port_id specific */
869 if ((rport
->port_id
!= -1) &&
870 (rport
->port_id
& FC_WELLKNOWN_PORTID_MASK
) ==
871 FC_WELLKNOWN_PORTID_MASK
) {
872 switch (rport
->port_id
& FC_WELLKNOWN_ROLE_MASK
) {
873 case FC_FPORT_PORTID
:
874 return snprintf(buf
, 30, "Fabric Port\n");
875 case FC_FABCTLR_PORTID
:
876 return snprintf(buf
, 30, "Fabric Controller\n");
877 case FC_DIRSRVR_PORTID
:
878 return snprintf(buf
, 30, "Directory Server\n");
879 case FC_TIMESRVR_PORTID
:
880 return snprintf(buf
, 30, "Time Server\n");
881 case FC_MGMTSRVR_PORTID
:
882 return snprintf(buf
, 30, "Management Server\n");
884 return snprintf(buf
, 30, "Unknown Fabric Entity\n");
887 if (rport
->roles
== FC_PORT_ROLE_UNKNOWN
)
888 return snprintf(buf
, 20, "unknown\n");
889 return get_fc_port_roles_names(rport
->roles
, buf
);
892 static FC_DEVICE_ATTR(rport
, roles
, S_IRUGO
,
893 show_fc_rport_roles
, NULL
);
895 fc_private_rport_rd_enum_attr(port_state
, FC_PORTSTATE_MAX_NAMELEN
);
896 fc_private_rport_rd_attr(scsi_target_id
, "%d\n", 20);
899 * fast_io_fail_tmo attribute
902 show_fc_rport_fast_io_fail_tmo (struct device
*dev
,
903 struct device_attribute
*attr
, char *buf
)
905 struct fc_rport
*rport
= transport_class_to_rport(dev
);
907 if (rport
->fast_io_fail_tmo
== -1)
908 return snprintf(buf
, 5, "off\n");
909 return snprintf(buf
, 20, "%d\n", rport
->fast_io_fail_tmo
);
913 store_fc_rport_fast_io_fail_tmo(struct device
*dev
,
914 struct device_attribute
*attr
, const char *buf
,
919 struct fc_rport
*rport
= transport_class_to_rport(dev
);
921 if ((rport
->port_state
== FC_PORTSTATE_BLOCKED
) ||
922 (rport
->port_state
== FC_PORTSTATE_DELETED
) ||
923 (rport
->port_state
== FC_PORTSTATE_NOTPRESENT
))
925 if (strncmp(buf
, "off", 3) == 0)
926 rport
->fast_io_fail_tmo
= -1;
928 val
= simple_strtoul(buf
, &cp
, 0);
929 if ((*cp
&& (*cp
!= '\n')) ||
930 (val
< 0) || (val
>= rport
->dev_loss_tmo
))
932 rport
->fast_io_fail_tmo
= val
;
936 static FC_DEVICE_ATTR(rport
, fast_io_fail_tmo
, S_IRUGO
| S_IWUSR
,
937 show_fc_rport_fast_io_fail_tmo
, store_fc_rport_fast_io_fail_tmo
);
941 * FC SCSI Target Attribute Management
945 * Note: in the target show function we recognize when the remote
946 * port is in the heirarchy and do not allow the driver to get
947 * involved in sysfs functions. The driver only gets involved if
948 * it's the "old" style that doesn't use rports.
950 #define fc_starget_show_function(field, format_string, sz, cast) \
952 show_fc_starget_##field (struct device *dev, \
953 struct device_attribute *attr, char *buf) \
955 struct scsi_target *starget = transport_class_to_starget(dev); \
956 struct Scsi_Host *shost = dev_to_shost(starget->dev.parent); \
957 struct fc_internal *i = to_fc_internal(shost->transportt); \
958 struct fc_rport *rport = starget_to_rport(starget); \
960 fc_starget_##field(starget) = rport->field; \
961 else if (i->f->get_starget_##field) \
962 i->f->get_starget_##field(starget); \
963 return snprintf(buf, sz, format_string, \
964 cast fc_starget_##field(starget)); \
967 #define fc_starget_rd_attr(field, format_string, sz) \
968 fc_starget_show_function(field, format_string, sz, ) \
969 static FC_DEVICE_ATTR(starget, field, S_IRUGO, \
970 show_fc_starget_##field, NULL)
972 #define fc_starget_rd_attr_cast(field, format_string, sz, cast) \
973 fc_starget_show_function(field, format_string, sz, (cast)) \
974 static FC_DEVICE_ATTR(starget, field, S_IRUGO, \
975 show_fc_starget_##field, NULL)
977 #define SETUP_STARGET_ATTRIBUTE_RD(field) \
978 i->private_starget_attrs[count] = device_attr_starget_##field; \
979 i->private_starget_attrs[count].attr.mode = S_IRUGO; \
980 i->private_starget_attrs[count].store = NULL; \
981 i->starget_attrs[count] = &i->private_starget_attrs[count]; \
982 if (i->f->show_starget_##field) \
985 #define SETUP_STARGET_ATTRIBUTE_RW(field) \
986 i->private_starget_attrs[count] = device_attr_starget_##field; \
987 if (!i->f->set_starget_##field) { \
988 i->private_starget_attrs[count].attr.mode = S_IRUGO; \
989 i->private_starget_attrs[count].store = NULL; \
991 i->starget_attrs[count] = &i->private_starget_attrs[count]; \
992 if (i->f->show_starget_##field) \
995 /* The FC Transport SCSI Target Attributes: */
996 fc_starget_rd_attr_cast(node_name
, "0x%llx\n", 20, unsigned long long);
997 fc_starget_rd_attr_cast(port_name
, "0x%llx\n", 20, unsigned long long);
998 fc_starget_rd_attr(port_id
, "0x%06x\n", 20);
1002 * FC Virtual Port Attribute Management
1005 #define fc_vport_show_function(field, format_string, sz, cast) \
1007 show_fc_vport_##field (struct device *dev, \
1008 struct device_attribute *attr, char *buf) \
1010 struct fc_vport *vport = transport_class_to_vport(dev); \
1011 struct Scsi_Host *shost = vport_to_shost(vport); \
1012 struct fc_internal *i = to_fc_internal(shost->transportt); \
1013 if ((i->f->get_vport_##field) && \
1014 !(vport->flags & (FC_VPORT_DEL | FC_VPORT_CREATING))) \
1015 i->f->get_vport_##field(vport); \
1016 return snprintf(buf, sz, format_string, cast vport->field); \
1019 #define fc_vport_store_function(field) \
1021 store_fc_vport_##field(struct device *dev, \
1022 struct device_attribute *attr, \
1023 const char *buf, size_t count) \
1026 struct fc_vport *vport = transport_class_to_vport(dev); \
1027 struct Scsi_Host *shost = vport_to_shost(vport); \
1028 struct fc_internal *i = to_fc_internal(shost->transportt); \
1030 if (vport->flags & (FC_VPORT_DEL | FC_VPORT_CREATING)) \
1032 val = simple_strtoul(buf, &cp, 0); \
1033 if (*cp && (*cp != '\n')) \
1035 i->f->set_vport_##field(vport, val); \
1039 #define fc_vport_store_str_function(field, slen) \
1041 store_fc_vport_##field(struct device *dev, \
1042 struct device_attribute *attr, \
1043 const char *buf, size_t count) \
1045 struct fc_vport *vport = transport_class_to_vport(dev); \
1046 struct Scsi_Host *shost = vport_to_shost(vport); \
1047 struct fc_internal *i = to_fc_internal(shost->transportt); \
1048 unsigned int cnt=count; \
1050 /* count may include a LF at end of string */ \
1051 if (buf[cnt-1] == '\n') \
1053 if (cnt > ((slen) - 1)) \
1055 memcpy(vport->field, buf, cnt); \
1056 i->f->set_vport_##field(vport); \
1060 #define fc_vport_rd_attr(field, format_string, sz) \
1061 fc_vport_show_function(field, format_string, sz, ) \
1062 static FC_DEVICE_ATTR(vport, field, S_IRUGO, \
1063 show_fc_vport_##field, NULL)
1065 #define fc_vport_rd_attr_cast(field, format_string, sz, cast) \
1066 fc_vport_show_function(field, format_string, sz, (cast)) \
1067 static FC_DEVICE_ATTR(vport, field, S_IRUGO, \
1068 show_fc_vport_##field, NULL)
1070 #define fc_vport_rw_attr(field, format_string, sz) \
1071 fc_vport_show_function(field, format_string, sz, ) \
1072 fc_vport_store_function(field) \
1073 static FC_DEVICE_ATTR(vport, field, S_IRUGO | S_IWUSR, \
1074 show_fc_vport_##field, \
1075 store_fc_vport_##field)
1077 #define fc_private_vport_show_function(field, format_string, sz, cast) \
1079 show_fc_vport_##field (struct device *dev, \
1080 struct device_attribute *attr, char *buf) \
1082 struct fc_vport *vport = transport_class_to_vport(dev); \
1083 return snprintf(buf, sz, format_string, cast vport->field); \
1086 #define fc_private_vport_store_u32_function(field) \
1088 store_fc_vport_##field(struct device *dev, \
1089 struct device_attribute *attr, \
1090 const char *buf, size_t count) \
1093 struct fc_vport *vport = transport_class_to_vport(dev); \
1095 if (vport->flags & (FC_VPORT_DEL | FC_VPORT_CREATING)) \
1097 val = simple_strtoul(buf, &cp, 0); \
1098 if (*cp && (*cp != '\n')) \
1100 vport->field = val; \
1105 #define fc_private_vport_rd_attr(field, format_string, sz) \
1106 fc_private_vport_show_function(field, format_string, sz, ) \
1107 static FC_DEVICE_ATTR(vport, field, S_IRUGO, \
1108 show_fc_vport_##field, NULL)
1110 #define fc_private_vport_rd_attr_cast(field, format_string, sz, cast) \
1111 fc_private_vport_show_function(field, format_string, sz, (cast)) \
1112 static FC_DEVICE_ATTR(vport, field, S_IRUGO, \
1113 show_fc_vport_##field, NULL)
1115 #define fc_private_vport_rw_u32_attr(field, format_string, sz) \
1116 fc_private_vport_show_function(field, format_string, sz, ) \
1117 fc_private_vport_store_u32_function(field) \
1118 static FC_DEVICE_ATTR(vport, field, S_IRUGO | S_IWUSR, \
1119 show_fc_vport_##field, \
1120 store_fc_vport_##field)
1123 #define fc_private_vport_rd_enum_attr(title, maxlen) \
1125 show_fc_vport_##title (struct device *dev, \
1126 struct device_attribute *attr, \
1129 struct fc_vport *vport = transport_class_to_vport(dev); \
1131 name = get_fc_##title##_name(vport->title); \
1134 return snprintf(buf, maxlen, "%s\n", name); \
1136 static FC_DEVICE_ATTR(vport, title, S_IRUGO, \
1137 show_fc_vport_##title, NULL)
1140 #define SETUP_VPORT_ATTRIBUTE_RD(field) \
1141 i->private_vport_attrs[count] = device_attr_vport_##field; \
1142 i->private_vport_attrs[count].attr.mode = S_IRUGO; \
1143 i->private_vport_attrs[count].store = NULL; \
1144 i->vport_attrs[count] = &i->private_vport_attrs[count]; \
1145 if (i->f->get_##field) \
1147 /* NOTE: Above MACRO differs: checks function not show bit */
1149 #define SETUP_PRIVATE_VPORT_ATTRIBUTE_RD(field) \
1150 i->private_vport_attrs[count] = device_attr_vport_##field; \
1151 i->private_vport_attrs[count].attr.mode = S_IRUGO; \
1152 i->private_vport_attrs[count].store = NULL; \
1153 i->vport_attrs[count] = &i->private_vport_attrs[count]; \
1156 #define SETUP_VPORT_ATTRIBUTE_WR(field) \
1157 i->private_vport_attrs[count] = device_attr_vport_##field; \
1158 i->vport_attrs[count] = &i->private_vport_attrs[count]; \
1161 /* NOTE: Above MACRO differs: checks function */
1163 #define SETUP_VPORT_ATTRIBUTE_RW(field) \
1164 i->private_vport_attrs[count] = device_attr_vport_##field; \
1165 if (!i->f->set_vport_##field) { \
1166 i->private_vport_attrs[count].attr.mode = S_IRUGO; \
1167 i->private_vport_attrs[count].store = NULL; \
1169 i->vport_attrs[count] = &i->private_vport_attrs[count]; \
1171 /* NOTE: Above MACRO differs: does not check show bit */
1173 #define SETUP_PRIVATE_VPORT_ATTRIBUTE_RW(field) \
1175 i->private_vport_attrs[count] = device_attr_vport_##field; \
1176 i->vport_attrs[count] = &i->private_vport_attrs[count]; \
1181 /* The FC Transport Virtual Port Attributes: */
1183 /* Fixed Virtual Port Attributes */
1185 /* Dynamic Virtual Port Attributes */
1187 /* Private Virtual Port Attributes */
1189 fc_private_vport_rd_enum_attr(vport_state
, FC_VPORTSTATE_MAX_NAMELEN
);
1190 fc_private_vport_rd_enum_attr(vport_last_state
, FC_VPORTSTATE_MAX_NAMELEN
);
1191 fc_private_vport_rd_attr_cast(node_name
, "0x%llx\n", 20, unsigned long long);
1192 fc_private_vport_rd_attr_cast(port_name
, "0x%llx\n", 20, unsigned long long);
1195 show_fc_vport_roles (struct device
*dev
, struct device_attribute
*attr
,
1198 struct fc_vport
*vport
= transport_class_to_vport(dev
);
1200 if (vport
->roles
== FC_PORT_ROLE_UNKNOWN
)
1201 return snprintf(buf
, 20, "unknown\n");
1202 return get_fc_port_roles_names(vport
->roles
, buf
);
1204 static FC_DEVICE_ATTR(vport
, roles
, S_IRUGO
, show_fc_vport_roles
, NULL
);
1206 fc_private_vport_rd_enum_attr(vport_type
, FC_PORTTYPE_MAX_NAMELEN
);
1208 fc_private_vport_show_function(symbolic_name
, "%s\n",
1209 FC_VPORT_SYMBOLIC_NAMELEN
+ 1, )
1210 fc_vport_store_str_function(symbolic_name
, FC_VPORT_SYMBOLIC_NAMELEN
)
1211 static FC_DEVICE_ATTR(vport
, symbolic_name
, S_IRUGO
| S_IWUSR
,
1212 show_fc_vport_symbolic_name
, store_fc_vport_symbolic_name
);
1215 store_fc_vport_delete(struct device
*dev
, struct device_attribute
*attr
,
1216 const char *buf
, size_t count
)
1218 struct fc_vport
*vport
= transport_class_to_vport(dev
);
1219 struct Scsi_Host
*shost
= vport_to_shost(vport
);
1221 fc_queue_work(shost
, &vport
->vport_delete_work
);
1224 static FC_DEVICE_ATTR(vport
, vport_delete
, S_IWUSR
,
1225 NULL
, store_fc_vport_delete
);
1229 * Enable/Disable vport
1230 * Write "1" to disable, write "0" to enable
1233 store_fc_vport_disable(struct device
*dev
, struct device_attribute
*attr
,
1237 struct fc_vport
*vport
= transport_class_to_vport(dev
);
1238 struct Scsi_Host
*shost
= vport_to_shost(vport
);
1239 struct fc_internal
*i
= to_fc_internal(shost
->transportt
);
1242 if (vport
->flags
& (FC_VPORT_DEL
| FC_VPORT_CREATING
))
1246 if (vport
->vport_state
!= FC_VPORT_DISABLED
)
1248 } else if (*buf
== '1') {
1249 if (vport
->vport_state
== FC_VPORT_DISABLED
)
1254 stat
= i
->f
->vport_disable(vport
, ((*buf
== '0') ? false : true));
1255 return stat
? stat
: count
;
1257 static FC_DEVICE_ATTR(vport
, vport_disable
, S_IWUSR
,
1258 NULL
, store_fc_vport_disable
);
1262 * Host Attribute Management
1265 #define fc_host_show_function(field, format_string, sz, cast) \
1267 show_fc_host_##field (struct device *dev, \
1268 struct device_attribute *attr, char *buf) \
1270 struct Scsi_Host *shost = transport_class_to_shost(dev); \
1271 struct fc_internal *i = to_fc_internal(shost->transportt); \
1272 if (i->f->get_host_##field) \
1273 i->f->get_host_##field(shost); \
1274 return snprintf(buf, sz, format_string, cast fc_host_##field(shost)); \
1277 #define fc_host_store_function(field) \
1279 store_fc_host_##field(struct device *dev, \
1280 struct device_attribute *attr, \
1281 const char *buf, size_t count) \
1284 struct Scsi_Host *shost = transport_class_to_shost(dev); \
1285 struct fc_internal *i = to_fc_internal(shost->transportt); \
1288 val = simple_strtoul(buf, &cp, 0); \
1289 if (*cp && (*cp != '\n')) \
1291 i->f->set_host_##field(shost, val); \
1295 #define fc_host_store_str_function(field, slen) \
1297 store_fc_host_##field(struct device *dev, \
1298 struct device_attribute *attr, \
1299 const char *buf, size_t count) \
1301 struct Scsi_Host *shost = transport_class_to_shost(dev); \
1302 struct fc_internal *i = to_fc_internal(shost->transportt); \
1303 unsigned int cnt=count; \
1305 /* count may include a LF at end of string */ \
1306 if (buf[cnt-1] == '\n') \
1308 if (cnt > ((slen) - 1)) \
1310 memcpy(fc_host_##field(shost), buf, cnt); \
1311 i->f->set_host_##field(shost); \
1315 #define fc_host_rd_attr(field, format_string, sz) \
1316 fc_host_show_function(field, format_string, sz, ) \
1317 static FC_DEVICE_ATTR(host, field, S_IRUGO, \
1318 show_fc_host_##field, NULL)
1320 #define fc_host_rd_attr_cast(field, format_string, sz, cast) \
1321 fc_host_show_function(field, format_string, sz, (cast)) \
1322 static FC_DEVICE_ATTR(host, field, S_IRUGO, \
1323 show_fc_host_##field, NULL)
1325 #define fc_host_rw_attr(field, format_string, sz) \
1326 fc_host_show_function(field, format_string, sz, ) \
1327 fc_host_store_function(field) \
1328 static FC_DEVICE_ATTR(host, field, S_IRUGO | S_IWUSR, \
1329 show_fc_host_##field, \
1330 store_fc_host_##field)
1332 #define fc_host_rd_enum_attr(title, maxlen) \
1334 show_fc_host_##title (struct device *dev, \
1335 struct device_attribute *attr, char *buf) \
1337 struct Scsi_Host *shost = transport_class_to_shost(dev); \
1338 struct fc_internal *i = to_fc_internal(shost->transportt); \
1340 if (i->f->get_host_##title) \
1341 i->f->get_host_##title(shost); \
1342 name = get_fc_##title##_name(fc_host_##title(shost)); \
1345 return snprintf(buf, maxlen, "%s\n", name); \
1347 static FC_DEVICE_ATTR(host, title, S_IRUGO, show_fc_host_##title, NULL)
1349 #define SETUP_HOST_ATTRIBUTE_RD(field) \
1350 i->private_host_attrs[count] = device_attr_host_##field; \
1351 i->private_host_attrs[count].attr.mode = S_IRUGO; \
1352 i->private_host_attrs[count].store = NULL; \
1353 i->host_attrs[count] = &i->private_host_attrs[count]; \
1354 if (i->f->show_host_##field) \
1357 #define SETUP_HOST_ATTRIBUTE_RD_NS(field) \
1358 i->private_host_attrs[count] = device_attr_host_##field; \
1359 i->private_host_attrs[count].attr.mode = S_IRUGO; \
1360 i->private_host_attrs[count].store = NULL; \
1361 i->host_attrs[count] = &i->private_host_attrs[count]; \
1364 #define SETUP_HOST_ATTRIBUTE_RW(field) \
1365 i->private_host_attrs[count] = device_attr_host_##field; \
1366 if (!i->f->set_host_##field) { \
1367 i->private_host_attrs[count].attr.mode = S_IRUGO; \
1368 i->private_host_attrs[count].store = NULL; \
1370 i->host_attrs[count] = &i->private_host_attrs[count]; \
1371 if (i->f->show_host_##field) \
1375 #define fc_private_host_show_function(field, format_string, sz, cast) \
1377 show_fc_host_##field (struct device *dev, \
1378 struct device_attribute *attr, char *buf) \
1380 struct Scsi_Host *shost = transport_class_to_shost(dev); \
1381 return snprintf(buf, sz, format_string, cast fc_host_##field(shost)); \
1384 #define fc_private_host_rd_attr(field, format_string, sz) \
1385 fc_private_host_show_function(field, format_string, sz, ) \
1386 static FC_DEVICE_ATTR(host, field, S_IRUGO, \
1387 show_fc_host_##field, NULL)
1389 #define fc_private_host_rd_attr_cast(field, format_string, sz, cast) \
1390 fc_private_host_show_function(field, format_string, sz, (cast)) \
1391 static FC_DEVICE_ATTR(host, field, S_IRUGO, \
1392 show_fc_host_##field, NULL)
1394 #define SETUP_PRIVATE_HOST_ATTRIBUTE_RD(field) \
1395 i->private_host_attrs[count] = device_attr_host_##field; \
1396 i->private_host_attrs[count].attr.mode = S_IRUGO; \
1397 i->private_host_attrs[count].store = NULL; \
1398 i->host_attrs[count] = &i->private_host_attrs[count]; \
1401 #define SETUP_PRIVATE_HOST_ATTRIBUTE_RW(field) \
1403 i->private_host_attrs[count] = device_attr_host_##field; \
1404 i->host_attrs[count] = &i->private_host_attrs[count]; \
1409 /* Fixed Host Attributes */
1412 show_fc_host_supported_classes (struct device
*dev
,
1413 struct device_attribute
*attr
, char *buf
)
1415 struct Scsi_Host
*shost
= transport_class_to_shost(dev
);
1417 if (fc_host_supported_classes(shost
) == FC_COS_UNSPECIFIED
)
1418 return snprintf(buf
, 20, "unspecified\n");
1420 return get_fc_cos_names(fc_host_supported_classes(shost
), buf
);
1422 static FC_DEVICE_ATTR(host
, supported_classes
, S_IRUGO
,
1423 show_fc_host_supported_classes
, NULL
);
1426 show_fc_host_supported_fc4s (struct device
*dev
,
1427 struct device_attribute
*attr
, char *buf
)
1429 struct Scsi_Host
*shost
= transport_class_to_shost(dev
);
1430 return (ssize_t
)show_fc_fc4s(buf
, fc_host_supported_fc4s(shost
));
1432 static FC_DEVICE_ATTR(host
, supported_fc4s
, S_IRUGO
,
1433 show_fc_host_supported_fc4s
, NULL
);
1436 show_fc_host_supported_speeds (struct device
*dev
,
1437 struct device_attribute
*attr
, char *buf
)
1439 struct Scsi_Host
*shost
= transport_class_to_shost(dev
);
1441 if (fc_host_supported_speeds(shost
) == FC_PORTSPEED_UNKNOWN
)
1442 return snprintf(buf
, 20, "unknown\n");
1444 return get_fc_port_speed_names(fc_host_supported_speeds(shost
), buf
);
1446 static FC_DEVICE_ATTR(host
, supported_speeds
, S_IRUGO
,
1447 show_fc_host_supported_speeds
, NULL
);
1450 fc_private_host_rd_attr_cast(node_name
, "0x%llx\n", 20, unsigned long long);
1451 fc_private_host_rd_attr_cast(port_name
, "0x%llx\n", 20, unsigned long long);
1452 fc_private_host_rd_attr_cast(permanent_port_name
, "0x%llx\n", 20,
1453 unsigned long long);
1454 fc_private_host_rd_attr(maxframe_size
, "%u bytes\n", 20);
1455 fc_private_host_rd_attr(max_npiv_vports
, "%u\n", 20);
1456 fc_private_host_rd_attr(serial_number
, "%s\n", (FC_SERIAL_NUMBER_SIZE
+1));
1459 /* Dynamic Host Attributes */
1462 show_fc_host_active_fc4s (struct device
*dev
,
1463 struct device_attribute
*attr
, char *buf
)
1465 struct Scsi_Host
*shost
= transport_class_to_shost(dev
);
1466 struct fc_internal
*i
= to_fc_internal(shost
->transportt
);
1468 if (i
->f
->get_host_active_fc4s
)
1469 i
->f
->get_host_active_fc4s(shost
);
1471 return (ssize_t
)show_fc_fc4s(buf
, fc_host_active_fc4s(shost
));
1473 static FC_DEVICE_ATTR(host
, active_fc4s
, S_IRUGO
,
1474 show_fc_host_active_fc4s
, NULL
);
1477 show_fc_host_speed (struct device
*dev
,
1478 struct device_attribute
*attr
, char *buf
)
1480 struct Scsi_Host
*shost
= transport_class_to_shost(dev
);
1481 struct fc_internal
*i
= to_fc_internal(shost
->transportt
);
1483 if (i
->f
->get_host_speed
)
1484 i
->f
->get_host_speed(shost
);
1486 if (fc_host_speed(shost
) == FC_PORTSPEED_UNKNOWN
)
1487 return snprintf(buf
, 20, "unknown\n");
1489 return get_fc_port_speed_names(fc_host_speed(shost
), buf
);
1491 static FC_DEVICE_ATTR(host
, speed
, S_IRUGO
,
1492 show_fc_host_speed
, NULL
);
1495 fc_host_rd_attr(port_id
, "0x%06x\n", 20);
1496 fc_host_rd_enum_attr(port_type
, FC_PORTTYPE_MAX_NAMELEN
);
1497 fc_host_rd_enum_attr(port_state
, FC_PORTSTATE_MAX_NAMELEN
);
1498 fc_host_rd_attr_cast(fabric_name
, "0x%llx\n", 20, unsigned long long);
1499 fc_host_rd_attr(symbolic_name
, "%s\n", FC_SYMBOLIC_NAME_SIZE
+ 1);
1501 fc_private_host_show_function(system_hostname
, "%s\n",
1502 FC_SYMBOLIC_NAME_SIZE
+ 1, )
1503 fc_host_store_str_function(system_hostname
, FC_SYMBOLIC_NAME_SIZE
)
1504 static FC_DEVICE_ATTR(host
, system_hostname
, S_IRUGO
| S_IWUSR
,
1505 show_fc_host_system_hostname
, store_fc_host_system_hostname
);
1508 /* Private Host Attributes */
1511 show_fc_private_host_tgtid_bind_type(struct device
*dev
,
1512 struct device_attribute
*attr
, char *buf
)
1514 struct Scsi_Host
*shost
= transport_class_to_shost(dev
);
1517 name
= get_fc_tgtid_bind_type_name(fc_host_tgtid_bind_type(shost
));
1520 return snprintf(buf
, FC_BINDTYPE_MAX_NAMELEN
, "%s\n", name
);
1523 #define get_list_head_entry(pos, head, member) \
1524 pos = list_entry((head)->next, typeof(*pos), member)
1527 store_fc_private_host_tgtid_bind_type(struct device
*dev
,
1528 struct device_attribute
*attr
, const char *buf
, size_t count
)
1530 struct Scsi_Host
*shost
= transport_class_to_shost(dev
);
1531 struct fc_rport
*rport
;
1532 enum fc_tgtid_binding_type val
;
1533 unsigned long flags
;
1535 if (get_fc_tgtid_bind_type_match(buf
, &val
))
1538 /* if changing bind type, purge all unused consistent bindings */
1539 if (val
!= fc_host_tgtid_bind_type(shost
)) {
1540 spin_lock_irqsave(shost
->host_lock
, flags
);
1541 while (!list_empty(&fc_host_rport_bindings(shost
))) {
1542 get_list_head_entry(rport
,
1543 &fc_host_rport_bindings(shost
), peers
);
1544 list_del(&rport
->peers
);
1545 rport
->port_state
= FC_PORTSTATE_DELETED
;
1546 fc_queue_work(shost
, &rport
->rport_delete_work
);
1548 spin_unlock_irqrestore(shost
->host_lock
, flags
);
1551 fc_host_tgtid_bind_type(shost
) = val
;
1555 static FC_DEVICE_ATTR(host
, tgtid_bind_type
, S_IRUGO
| S_IWUSR
,
1556 show_fc_private_host_tgtid_bind_type
,
1557 store_fc_private_host_tgtid_bind_type
);
1560 store_fc_private_host_issue_lip(struct device
*dev
,
1561 struct device_attribute
*attr
, const char *buf
, size_t count
)
1563 struct Scsi_Host
*shost
= transport_class_to_shost(dev
);
1564 struct fc_internal
*i
= to_fc_internal(shost
->transportt
);
1567 /* ignore any data value written to the attribute */
1568 if (i
->f
->issue_fc_host_lip
) {
1569 ret
= i
->f
->issue_fc_host_lip(shost
);
1570 return ret
? ret
: count
;
1576 static FC_DEVICE_ATTR(host
, issue_lip
, S_IWUSR
, NULL
,
1577 store_fc_private_host_issue_lip
);
1579 fc_private_host_rd_attr(npiv_vports_inuse
, "%u\n", 20);
1583 * Host Statistics Management
1586 /* Show a given an attribute in the statistics group */
1588 fc_stat_show(const struct device
*dev
, char *buf
, unsigned long offset
)
1590 struct Scsi_Host
*shost
= transport_class_to_shost(dev
);
1591 struct fc_internal
*i
= to_fc_internal(shost
->transportt
);
1592 struct fc_host_statistics
*stats
;
1593 ssize_t ret
= -ENOENT
;
1595 if (offset
> sizeof(struct fc_host_statistics
) ||
1596 offset
% sizeof(u64
) != 0)
1599 if (i
->f
->get_fc_host_stats
) {
1600 stats
= (i
->f
->get_fc_host_stats
)(shost
);
1602 ret
= snprintf(buf
, 20, "0x%llx\n",
1603 (unsigned long long)*(u64
*)(((u8
*) stats
) + offset
));
1609 /* generate a read-only statistics attribute */
1610 #define fc_host_statistic(name) \
1611 static ssize_t show_fcstat_##name(struct device *cd, \
1612 struct device_attribute *attr, \
1615 return fc_stat_show(cd, buf, \
1616 offsetof(struct fc_host_statistics, name)); \
1618 static FC_DEVICE_ATTR(host, name, S_IRUGO, show_fcstat_##name, NULL)
1620 fc_host_statistic(seconds_since_last_reset
);
1621 fc_host_statistic(tx_frames
);
1622 fc_host_statistic(tx_words
);
1623 fc_host_statistic(rx_frames
);
1624 fc_host_statistic(rx_words
);
1625 fc_host_statistic(lip_count
);
1626 fc_host_statistic(nos_count
);
1627 fc_host_statistic(error_frames
);
1628 fc_host_statistic(dumped_frames
);
1629 fc_host_statistic(link_failure_count
);
1630 fc_host_statistic(loss_of_sync_count
);
1631 fc_host_statistic(loss_of_signal_count
);
1632 fc_host_statistic(prim_seq_protocol_err_count
);
1633 fc_host_statistic(invalid_tx_word_count
);
1634 fc_host_statistic(invalid_crc_count
);
1635 fc_host_statistic(fcp_input_requests
);
1636 fc_host_statistic(fcp_output_requests
);
1637 fc_host_statistic(fcp_control_requests
);
1638 fc_host_statistic(fcp_input_megabytes
);
1639 fc_host_statistic(fcp_output_megabytes
);
1642 fc_reset_statistics(struct device
*dev
, struct device_attribute
*attr
,
1643 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
);
1648 /* ignore any data value written to the attribute */
1649 if (i
->f
->reset_fc_host_stats
) {
1650 i
->f
->reset_fc_host_stats(shost
);
1656 static FC_DEVICE_ATTR(host
, reset_statistics
, S_IWUSR
, NULL
,
1657 fc_reset_statistics
);
1659 static struct attribute
*fc_statistics_attrs
[] = {
1660 &device_attr_host_seconds_since_last_reset
.attr
,
1661 &device_attr_host_tx_frames
.attr
,
1662 &device_attr_host_tx_words
.attr
,
1663 &device_attr_host_rx_frames
.attr
,
1664 &device_attr_host_rx_words
.attr
,
1665 &device_attr_host_lip_count
.attr
,
1666 &device_attr_host_nos_count
.attr
,
1667 &device_attr_host_error_frames
.attr
,
1668 &device_attr_host_dumped_frames
.attr
,
1669 &device_attr_host_link_failure_count
.attr
,
1670 &device_attr_host_loss_of_sync_count
.attr
,
1671 &device_attr_host_loss_of_signal_count
.attr
,
1672 &device_attr_host_prim_seq_protocol_err_count
.attr
,
1673 &device_attr_host_invalid_tx_word_count
.attr
,
1674 &device_attr_host_invalid_crc_count
.attr
,
1675 &device_attr_host_fcp_input_requests
.attr
,
1676 &device_attr_host_fcp_output_requests
.attr
,
1677 &device_attr_host_fcp_control_requests
.attr
,
1678 &device_attr_host_fcp_input_megabytes
.attr
,
1679 &device_attr_host_fcp_output_megabytes
.attr
,
1680 &device_attr_host_reset_statistics
.attr
,
1684 static struct attribute_group fc_statistics_group
= {
1685 .name
= "statistics",
1686 .attrs
= fc_statistics_attrs
,
1690 /* Host Vport Attributes */
1693 fc_parse_wwn(const char *ns
, u64
*nm
)
1698 memset(wwn
, 0, sizeof(wwn
));
1700 /* Validate and store the new name */
1701 for (i
=0, j
=0; i
< 16; i
++) {
1702 if ((*ns
>= 'a') && (*ns
<= 'f'))
1703 j
= ((j
<< 4) | ((*ns
++ -'a') + 10));
1704 else if ((*ns
>= 'A') && (*ns
<= 'F'))
1705 j
= ((j
<< 4) | ((*ns
++ -'A') + 10));
1706 else if ((*ns
>= '0') && (*ns
<= '9'))
1707 j
= ((j
<< 4) | (*ns
++ -'0'));
1711 wwn
[i
/2] = j
& 0xff;
1716 *nm
= wwn_to_u64(wwn
);
1723 * "Short-cut" sysfs variable to create a new vport on a FC Host.
1724 * Input is a string of the form "<WWPN>:<WWNN>". Other attributes
1725 * will default to a NPIV-based FCP_Initiator; The WWNs are specified
1726 * as hex characters, and may *not* contain any prefixes (e.g. 0x, x, etc)
1729 store_fc_host_vport_create(struct device
*dev
, struct device_attribute
*attr
,
1730 const char *buf
, size_t count
)
1732 struct Scsi_Host
*shost
= transport_class_to_shost(dev
);
1733 struct fc_vport_identifiers vid
;
1734 struct fc_vport
*vport
;
1735 unsigned int cnt
=count
;
1738 memset(&vid
, 0, sizeof(vid
));
1740 /* count may include a LF at end of string */
1741 if (buf
[cnt
-1] == '\n')
1744 /* validate we have enough characters for WWPN */
1745 if ((cnt
!= (16+1+16)) || (buf
[16] != ':'))
1748 stat
= fc_parse_wwn(&buf
[0], &vid
.port_name
);
1752 stat
= fc_parse_wwn(&buf
[17], &vid
.node_name
);
1756 vid
.roles
= FC_PORT_ROLE_FCP_INITIATOR
;
1757 vid
.vport_type
= FC_PORTTYPE_NPIV
;
1758 /* vid.symbolic_name is already zero/NULL's */
1759 vid
.disable
= false; /* always enabled */
1761 /* we only allow support on Channel 0 !!! */
1762 stat
= fc_vport_create(shost
, 0, &shost
->shost_gendev
, &vid
, &vport
);
1763 return stat
? stat
: count
;
1765 static FC_DEVICE_ATTR(host
, vport_create
, S_IWUSR
, NULL
,
1766 store_fc_host_vport_create
);
1770 * "Short-cut" sysfs variable to delete a vport on a FC Host.
1771 * Vport is identified by a string containing "<WWPN>:<WWNN>".
1772 * The WWNs are specified as hex characters, and may *not* contain
1773 * any prefixes (e.g. 0x, x, etc)
1776 store_fc_host_vport_delete(struct device
*dev
, struct device_attribute
*attr
,
1777 const char *buf
, size_t count
)
1779 struct Scsi_Host
*shost
= transport_class_to_shost(dev
);
1780 struct fc_host_attrs
*fc_host
= shost_to_fc_host(shost
);
1781 struct fc_vport
*vport
;
1783 unsigned long flags
;
1784 unsigned int cnt
=count
;
1787 /* count may include a LF at end of string */
1788 if (buf
[cnt
-1] == '\n')
1791 /* validate we have enough characters for WWPN */
1792 if ((cnt
!= (16+1+16)) || (buf
[16] != ':'))
1795 stat
= fc_parse_wwn(&buf
[0], &wwpn
);
1799 stat
= fc_parse_wwn(&buf
[17], &wwnn
);
1803 spin_lock_irqsave(shost
->host_lock
, flags
);
1805 /* we only allow support on Channel 0 !!! */
1806 list_for_each_entry(vport
, &fc_host
->vports
, peers
) {
1807 if ((vport
->channel
== 0) &&
1808 (vport
->port_name
== wwpn
) && (vport
->node_name
== wwnn
)) {
1813 spin_unlock_irqrestore(shost
->host_lock
, flags
);
1818 stat
= fc_vport_terminate(vport
);
1819 return stat
? stat
: count
;
1821 static FC_DEVICE_ATTR(host
, vport_delete
, S_IWUSR
, NULL
,
1822 store_fc_host_vport_delete
);
1825 static int fc_host_match(struct attribute_container
*cont
,
1828 struct Scsi_Host
*shost
;
1829 struct fc_internal
*i
;
1831 if (!scsi_is_host_device(dev
))
1834 shost
= dev_to_shost(dev
);
1835 if (!shost
->transportt
|| shost
->transportt
->host_attrs
.ac
.class
1836 != &fc_host_class
.class)
1839 i
= to_fc_internal(shost
->transportt
);
1841 return &i
->t
.host_attrs
.ac
== cont
;
1844 static int fc_target_match(struct attribute_container
*cont
,
1847 struct Scsi_Host
*shost
;
1848 struct fc_internal
*i
;
1850 if (!scsi_is_target_device(dev
))
1853 shost
= dev_to_shost(dev
->parent
);
1854 if (!shost
->transportt
|| shost
->transportt
->host_attrs
.ac
.class
1855 != &fc_host_class
.class)
1858 i
= to_fc_internal(shost
->transportt
);
1860 return &i
->t
.target_attrs
.ac
== cont
;
1863 static void fc_rport_dev_release(struct device
*dev
)
1865 struct fc_rport
*rport
= dev_to_rport(dev
);
1866 put_device(dev
->parent
);
1870 int scsi_is_fc_rport(const struct device
*dev
)
1872 return dev
->release
== fc_rport_dev_release
;
1874 EXPORT_SYMBOL(scsi_is_fc_rport
);
1876 static int fc_rport_match(struct attribute_container
*cont
,
1879 struct Scsi_Host
*shost
;
1880 struct fc_internal
*i
;
1882 if (!scsi_is_fc_rport(dev
))
1885 shost
= dev_to_shost(dev
->parent
);
1886 if (!shost
->transportt
|| shost
->transportt
->host_attrs
.ac
.class
1887 != &fc_host_class
.class)
1890 i
= to_fc_internal(shost
->transportt
);
1892 return &i
->rport_attr_cont
.ac
== cont
;
1896 static void fc_vport_dev_release(struct device
*dev
)
1898 struct fc_vport
*vport
= dev_to_vport(dev
);
1899 put_device(dev
->parent
); /* release kobj parent */
1903 int scsi_is_fc_vport(const struct device
*dev
)
1905 return dev
->release
== fc_vport_dev_release
;
1907 EXPORT_SYMBOL(scsi_is_fc_vport
);
1909 static int fc_vport_match(struct attribute_container
*cont
,
1912 struct fc_vport
*vport
;
1913 struct Scsi_Host
*shost
;
1914 struct fc_internal
*i
;
1916 if (!scsi_is_fc_vport(dev
))
1918 vport
= dev_to_vport(dev
);
1920 shost
= vport_to_shost(vport
);
1921 if (!shost
->transportt
|| shost
->transportt
->host_attrs
.ac
.class
1922 != &fc_host_class
.class)
1925 i
= to_fc_internal(shost
->transportt
);
1926 return &i
->vport_attr_cont
.ac
== cont
;
1931 * fc_timed_out - FC Transport I/O timeout intercept handler
1932 * @scmd: The SCSI command which timed out
1934 * This routine protects against error handlers getting invoked while a
1935 * rport is in a blocked state, typically due to a temporarily loss of
1936 * connectivity. If the error handlers are allowed to proceed, requests
1937 * to abort i/o, reset the target, etc will likely fail as there is no way
1938 * to communicate with the device to perform the requested function. These
1939 * failures may result in the midlayer taking the device offline, requiring
1940 * manual intervention to restore operation.
1942 * This routine, called whenever an i/o times out, validates the state of
1943 * the underlying rport. If the rport is blocked, it returns
1944 * EH_RESET_TIMER, which will continue to reschedule the timeout.
1945 * Eventually, either the device will return, or devloss_tmo will fire,
1946 * and when the timeout then fires, it will be handled normally.
1947 * If the rport is not blocked, normal error handling continues.
1950 * This routine assumes no locks are held on entry.
1952 static enum scsi_eh_timer_return
1953 fc_timed_out(struct scsi_cmnd
*scmd
)
1955 struct fc_rport
*rport
= starget_to_rport(scsi_target(scmd
->device
));
1957 if (rport
->port_state
== FC_PORTSTATE_BLOCKED
)
1958 return EH_RESET_TIMER
;
1960 return EH_NOT_HANDLED
;
1964 * Must be called with shost->host_lock held
1966 static int fc_user_scan(struct Scsi_Host
*shost
, uint channel
,
1969 struct fc_rport
*rport
;
1971 list_for_each_entry(rport
, &fc_host_rports(shost
), peers
) {
1972 if (rport
->scsi_target_id
== -1)
1975 if (rport
->port_state
!= FC_PORTSTATE_ONLINE
)
1978 if ((channel
== SCAN_WILD_CARD
|| channel
== rport
->channel
) &&
1979 (id
== SCAN_WILD_CARD
|| id
== rport
->scsi_target_id
)) {
1980 scsi_scan_target(&rport
->dev
, rport
->channel
,
1981 rport
->scsi_target_id
, lun
, 1);
1988 static int fc_tsk_mgmt_response(struct Scsi_Host
*shost
, u64 nexus
, u64 tm_id
,
1991 struct fc_internal
*i
= to_fc_internal(shost
->transportt
);
1992 return i
->f
->tsk_mgmt_response(shost
, nexus
, tm_id
, result
);
1995 static int fc_it_nexus_response(struct Scsi_Host
*shost
, u64 nexus
, int result
)
1997 struct fc_internal
*i
= to_fc_internal(shost
->transportt
);
1998 return i
->f
->it_nexus_response(shost
, nexus
, result
);
2001 struct scsi_transport_template
*
2002 fc_attach_transport(struct fc_function_template
*ft
)
2005 struct fc_internal
*i
= kzalloc(sizeof(struct fc_internal
),
2011 i
->t
.target_attrs
.ac
.attrs
= &i
->starget_attrs
[0];
2012 i
->t
.target_attrs
.ac
.class = &fc_transport_class
.class;
2013 i
->t
.target_attrs
.ac
.match
= fc_target_match
;
2014 i
->t
.target_size
= sizeof(struct fc_starget_attrs
);
2015 transport_container_register(&i
->t
.target_attrs
);
2017 i
->t
.host_attrs
.ac
.attrs
= &i
->host_attrs
[0];
2018 i
->t
.host_attrs
.ac
.class = &fc_host_class
.class;
2019 i
->t
.host_attrs
.ac
.match
= fc_host_match
;
2020 i
->t
.host_size
= sizeof(struct fc_host_attrs
);
2021 if (ft
->get_fc_host_stats
)
2022 i
->t
.host_attrs
.statistics
= &fc_statistics_group
;
2023 transport_container_register(&i
->t
.host_attrs
);
2025 i
->rport_attr_cont
.ac
.attrs
= &i
->rport_attrs
[0];
2026 i
->rport_attr_cont
.ac
.class = &fc_rport_class
.class;
2027 i
->rport_attr_cont
.ac
.match
= fc_rport_match
;
2028 transport_container_register(&i
->rport_attr_cont
);
2030 i
->vport_attr_cont
.ac
.attrs
= &i
->vport_attrs
[0];
2031 i
->vport_attr_cont
.ac
.class = &fc_vport_class
.class;
2032 i
->vport_attr_cont
.ac
.match
= fc_vport_match
;
2033 transport_container_register(&i
->vport_attr_cont
);
2037 /* Transport uses the shost workq for scsi scanning */
2038 i
->t
.create_work_queue
= 1;
2040 i
->t
.eh_timed_out
= fc_timed_out
;
2042 i
->t
.user_scan
= fc_user_scan
;
2044 /* target-mode drivers' functions */
2045 i
->t
.tsk_mgmt_response
= fc_tsk_mgmt_response
;
2046 i
->t
.it_nexus_response
= fc_it_nexus_response
;
2049 * Setup SCSI Target Attributes.
2052 SETUP_STARGET_ATTRIBUTE_RD(node_name
);
2053 SETUP_STARGET_ATTRIBUTE_RD(port_name
);
2054 SETUP_STARGET_ATTRIBUTE_RD(port_id
);
2056 BUG_ON(count
> FC_STARGET_NUM_ATTRS
);
2058 i
->starget_attrs
[count
] = NULL
;
2062 * Setup SCSI Host Attributes.
2065 SETUP_HOST_ATTRIBUTE_RD(node_name
);
2066 SETUP_HOST_ATTRIBUTE_RD(port_name
);
2067 SETUP_HOST_ATTRIBUTE_RD(permanent_port_name
);
2068 SETUP_HOST_ATTRIBUTE_RD(supported_classes
);
2069 SETUP_HOST_ATTRIBUTE_RD(supported_fc4s
);
2070 SETUP_HOST_ATTRIBUTE_RD(supported_speeds
);
2071 SETUP_HOST_ATTRIBUTE_RD(maxframe_size
);
2072 if (ft
->vport_create
) {
2073 SETUP_HOST_ATTRIBUTE_RD_NS(max_npiv_vports
);
2074 SETUP_HOST_ATTRIBUTE_RD_NS(npiv_vports_inuse
);
2076 SETUP_HOST_ATTRIBUTE_RD(serial_number
);
2078 SETUP_HOST_ATTRIBUTE_RD(port_id
);
2079 SETUP_HOST_ATTRIBUTE_RD(port_type
);
2080 SETUP_HOST_ATTRIBUTE_RD(port_state
);
2081 SETUP_HOST_ATTRIBUTE_RD(active_fc4s
);
2082 SETUP_HOST_ATTRIBUTE_RD(speed
);
2083 SETUP_HOST_ATTRIBUTE_RD(fabric_name
);
2084 SETUP_HOST_ATTRIBUTE_RD(symbolic_name
);
2085 SETUP_HOST_ATTRIBUTE_RW(system_hostname
);
2087 /* Transport-managed attributes */
2088 SETUP_PRIVATE_HOST_ATTRIBUTE_RW(tgtid_bind_type
);
2089 if (ft
->issue_fc_host_lip
)
2090 SETUP_PRIVATE_HOST_ATTRIBUTE_RW(issue_lip
);
2091 if (ft
->vport_create
)
2092 SETUP_PRIVATE_HOST_ATTRIBUTE_RW(vport_create
);
2093 if (ft
->vport_delete
)
2094 SETUP_PRIVATE_HOST_ATTRIBUTE_RW(vport_delete
);
2096 BUG_ON(count
> FC_HOST_NUM_ATTRS
);
2098 i
->host_attrs
[count
] = NULL
;
2101 * Setup Remote Port Attributes.
2104 SETUP_RPORT_ATTRIBUTE_RD(maxframe_size
);
2105 SETUP_RPORT_ATTRIBUTE_RD(supported_classes
);
2106 SETUP_RPORT_ATTRIBUTE_RW(dev_loss_tmo
);
2107 SETUP_PRIVATE_RPORT_ATTRIBUTE_RD(node_name
);
2108 SETUP_PRIVATE_RPORT_ATTRIBUTE_RD(port_name
);
2109 SETUP_PRIVATE_RPORT_ATTRIBUTE_RD(port_id
);
2110 SETUP_PRIVATE_RPORT_ATTRIBUTE_RD(roles
);
2111 SETUP_PRIVATE_RPORT_ATTRIBUTE_RD(port_state
);
2112 SETUP_PRIVATE_RPORT_ATTRIBUTE_RD(scsi_target_id
);
2113 if (ft
->terminate_rport_io
)
2114 SETUP_PRIVATE_RPORT_ATTRIBUTE_RW(fast_io_fail_tmo
);
2116 BUG_ON(count
> FC_RPORT_NUM_ATTRS
);
2118 i
->rport_attrs
[count
] = NULL
;
2121 * Setup Virtual Port Attributes.
2124 SETUP_PRIVATE_VPORT_ATTRIBUTE_RD(vport_state
);
2125 SETUP_PRIVATE_VPORT_ATTRIBUTE_RD(vport_last_state
);
2126 SETUP_PRIVATE_VPORT_ATTRIBUTE_RD(node_name
);
2127 SETUP_PRIVATE_VPORT_ATTRIBUTE_RD(port_name
);
2128 SETUP_PRIVATE_VPORT_ATTRIBUTE_RD(roles
);
2129 SETUP_PRIVATE_VPORT_ATTRIBUTE_RD(vport_type
);
2130 SETUP_VPORT_ATTRIBUTE_RW(symbolic_name
);
2131 SETUP_VPORT_ATTRIBUTE_WR(vport_delete
);
2132 SETUP_VPORT_ATTRIBUTE_WR(vport_disable
);
2134 BUG_ON(count
> FC_VPORT_NUM_ATTRS
);
2136 i
->vport_attrs
[count
] = NULL
;
2140 EXPORT_SYMBOL(fc_attach_transport
);
2142 void fc_release_transport(struct scsi_transport_template
*t
)
2144 struct fc_internal
*i
= to_fc_internal(t
);
2146 transport_container_unregister(&i
->t
.target_attrs
);
2147 transport_container_unregister(&i
->t
.host_attrs
);
2148 transport_container_unregister(&i
->rport_attr_cont
);
2149 transport_container_unregister(&i
->vport_attr_cont
);
2153 EXPORT_SYMBOL(fc_release_transport
);
2156 * fc_queue_work - Queue work to the fc_host workqueue.
2157 * @shost: Pointer to Scsi_Host bound to fc_host.
2158 * @work: Work to queue for execution.
2161 * 1 - work queued for execution
2162 * 0 - work is already queued
2163 * -EINVAL - work queue doesn't exist
2166 fc_queue_work(struct Scsi_Host
*shost
, struct work_struct
*work
)
2168 if (unlikely(!fc_host_work_q(shost
))) {
2170 "ERROR: FC host '%s' attempted to queue work, "
2171 "when no workqueue created.\n", shost
->hostt
->name
);
2177 return queue_work(fc_host_work_q(shost
), work
);
2181 * fc_flush_work - Flush a fc_host's workqueue.
2182 * @shost: Pointer to Scsi_Host bound to fc_host.
2185 fc_flush_work(struct Scsi_Host
*shost
)
2187 if (!fc_host_work_q(shost
)) {
2189 "ERROR: FC host '%s' attempted to flush work, "
2190 "when no workqueue created.\n", shost
->hostt
->name
);
2195 flush_workqueue(fc_host_work_q(shost
));
2199 * fc_queue_devloss_work - Schedule work for the fc_host devloss workqueue.
2200 * @shost: Pointer to Scsi_Host bound to fc_host.
2201 * @work: Work to queue for execution.
2202 * @delay: jiffies to delay the work queuing
2205 * 1 on success / 0 already queued / < 0 for error
2208 fc_queue_devloss_work(struct Scsi_Host
*shost
, struct delayed_work
*work
,
2209 unsigned long delay
)
2211 if (unlikely(!fc_host_devloss_work_q(shost
))) {
2213 "ERROR: FC host '%s' attempted to queue work, "
2214 "when no workqueue created.\n", shost
->hostt
->name
);
2220 return queue_delayed_work(fc_host_devloss_work_q(shost
), work
, delay
);
2224 * fc_flush_devloss - Flush a fc_host's devloss workqueue.
2225 * @shost: Pointer to Scsi_Host bound to fc_host.
2228 fc_flush_devloss(struct Scsi_Host
*shost
)
2230 if (!fc_host_devloss_work_q(shost
)) {
2232 "ERROR: FC host '%s' attempted to flush work, "
2233 "when no workqueue created.\n", shost
->hostt
->name
);
2238 flush_workqueue(fc_host_devloss_work_q(shost
));
2243 * fc_remove_host - called to terminate any fc_transport-related elements for a scsi host.
2244 * @shost: Which &Scsi_Host
2246 * This routine is expected to be called immediately preceeding the
2247 * a driver's call to scsi_remove_host().
2249 * WARNING: A driver utilizing the fc_transport, which fails to call
2250 * this routine prior to scsi_remove_host(), will leave dangling
2251 * objects in /sys/class/fc_remote_ports. Access to any of these
2252 * objects can result in a system crash !!!
2255 * This routine assumes no locks are held on entry.
2258 fc_remove_host(struct Scsi_Host
*shost
)
2260 struct fc_vport
*vport
= NULL
, *next_vport
= NULL
;
2261 struct fc_rport
*rport
= NULL
, *next_rport
= NULL
;
2262 struct workqueue_struct
*work_q
;
2263 struct fc_host_attrs
*fc_host
= shost_to_fc_host(shost
);
2264 unsigned long flags
;
2266 spin_lock_irqsave(shost
->host_lock
, flags
);
2268 /* Remove any vports */
2269 list_for_each_entry_safe(vport
, next_vport
, &fc_host
->vports
, peers
)
2270 fc_queue_work(shost
, &vport
->vport_delete_work
);
2272 /* Remove any remote ports */
2273 list_for_each_entry_safe(rport
, next_rport
,
2274 &fc_host
->rports
, peers
) {
2275 list_del(&rport
->peers
);
2276 rport
->port_state
= FC_PORTSTATE_DELETED
;
2277 fc_queue_work(shost
, &rport
->rport_delete_work
);
2280 list_for_each_entry_safe(rport
, next_rport
,
2281 &fc_host
->rport_bindings
, peers
) {
2282 list_del(&rport
->peers
);
2283 rport
->port_state
= FC_PORTSTATE_DELETED
;
2284 fc_queue_work(shost
, &rport
->rport_delete_work
);
2287 spin_unlock_irqrestore(shost
->host_lock
, flags
);
2289 /* flush all scan work items */
2290 scsi_flush_work(shost
);
2292 /* flush all stgt delete, and rport delete work items, then kill it */
2293 if (fc_host
->work_q
) {
2294 work_q
= fc_host
->work_q
;
2295 fc_host
->work_q
= NULL
;
2296 destroy_workqueue(work_q
);
2299 /* flush all devloss work items, then kill it */
2300 if (fc_host
->devloss_work_q
) {
2301 work_q
= fc_host
->devloss_work_q
;
2302 fc_host
->devloss_work_q
= NULL
;
2303 destroy_workqueue(work_q
);
2306 EXPORT_SYMBOL(fc_remove_host
);
2310 * fc_starget_delete - called to delete the scsi decendents of an rport
2311 * @work: remote port to be operated on.
2313 * Deletes target and all sdevs.
2316 fc_starget_delete(struct work_struct
*work
)
2318 struct fc_rport
*rport
=
2319 container_of(work
, struct fc_rport
, stgt_delete_work
);
2320 struct Scsi_Host
*shost
= rport_to_shost(rport
);
2321 struct fc_internal
*i
= to_fc_internal(shost
->transportt
);
2323 /* Involve the LLDD if possible to terminate all io on the rport. */
2324 if (i
->f
->terminate_rport_io
)
2325 i
->f
->terminate_rport_io(rport
);
2327 scsi_remove_target(&rport
->dev
);
2332 * fc_rport_final_delete - finish rport termination and delete it.
2333 * @work: remote port to be deleted.
2336 fc_rport_final_delete(struct work_struct
*work
)
2338 struct fc_rport
*rport
=
2339 container_of(work
, struct fc_rport
, rport_delete_work
);
2340 struct device
*dev
= &rport
->dev
;
2341 struct Scsi_Host
*shost
= rport_to_shost(rport
);
2342 struct fc_internal
*i
= to_fc_internal(shost
->transportt
);
2343 unsigned long flags
;
2346 * if a scan is pending, flush the SCSI Host work_q so that
2347 * that we can reclaim the rport scan work element.
2349 if (rport
->flags
& FC_RPORT_SCAN_PENDING
)
2350 scsi_flush_work(shost
);
2352 /* involve the LLDD to terminate all pending i/o */
2353 if (i
->f
->terminate_rport_io
)
2354 i
->f
->terminate_rport_io(rport
);
2357 * Cancel any outstanding timers. These should really exist
2358 * only when rmmod'ing the LLDD and we're asking for
2359 * immediate termination of the rports
2361 spin_lock_irqsave(shost
->host_lock
, flags
);
2362 if (rport
->flags
& FC_RPORT_DEVLOSS_PENDING
) {
2363 spin_unlock_irqrestore(shost
->host_lock
, flags
);
2364 if (!cancel_delayed_work(&rport
->fail_io_work
))
2365 fc_flush_devloss(shost
);
2366 if (!cancel_delayed_work(&rport
->dev_loss_work
))
2367 fc_flush_devloss(shost
);
2368 spin_lock_irqsave(shost
->host_lock
, flags
);
2369 rport
->flags
&= ~FC_RPORT_DEVLOSS_PENDING
;
2371 spin_unlock_irqrestore(shost
->host_lock
, flags
);
2373 /* Delete SCSI target and sdevs */
2374 if (rport
->scsi_target_id
!= -1)
2375 fc_starget_delete(&rport
->stgt_delete_work
);
2378 * Notify the driver that the rport is now dead. The LLDD will
2379 * also guarantee that any communication to the rport is terminated
2381 if (i
->f
->dev_loss_tmo_callbk
)
2382 i
->f
->dev_loss_tmo_callbk(rport
);
2384 transport_remove_device(dev
);
2386 transport_destroy_device(dev
);
2387 put_device(&shost
->shost_gendev
); /* for fc_host->rport list */
2388 put_device(dev
); /* for self-reference */
2393 * fc_rport_create - allocates and creates a remote FC port.
2394 * @shost: scsi host the remote port is connected to.
2395 * @channel: Channel on shost port connected to.
2396 * @ids: The world wide names, fc address, and FC4 port
2397 * roles for the remote port.
2399 * Allocates and creates the remoter port structure, including the
2400 * class and sysfs creation.
2403 * This routine assumes no locks are held on entry.
2405 static struct fc_rport
*
2406 fc_rport_create(struct Scsi_Host
*shost
, int channel
,
2407 struct fc_rport_identifiers
*ids
)
2409 struct fc_host_attrs
*fc_host
= shost_to_fc_host(shost
);
2410 struct fc_internal
*fci
= to_fc_internal(shost
->transportt
);
2411 struct fc_rport
*rport
;
2413 unsigned long flags
;
2417 size
= (sizeof(struct fc_rport
) + fci
->f
->dd_fcrport_size
);
2418 rport
= kzalloc(size
, GFP_KERNEL
);
2419 if (unlikely(!rport
)) {
2420 printk(KERN_ERR
"%s: allocation failure\n", __FUNCTION__
);
2424 rport
->maxframe_size
= -1;
2425 rport
->supported_classes
= FC_COS_UNSPECIFIED
;
2426 rport
->dev_loss_tmo
= fc_dev_loss_tmo
;
2427 memcpy(&rport
->node_name
, &ids
->node_name
, sizeof(rport
->node_name
));
2428 memcpy(&rport
->port_name
, &ids
->port_name
, sizeof(rport
->port_name
));
2429 rport
->port_id
= ids
->port_id
;
2430 rport
->roles
= ids
->roles
;
2431 rport
->port_state
= FC_PORTSTATE_ONLINE
;
2432 if (fci
->f
->dd_fcrport_size
)
2433 rport
->dd_data
= &rport
[1];
2434 rport
->channel
= channel
;
2435 rport
->fast_io_fail_tmo
= -1;
2437 INIT_DELAYED_WORK(&rport
->dev_loss_work
, fc_timeout_deleted_rport
);
2438 INIT_DELAYED_WORK(&rport
->fail_io_work
, fc_timeout_fail_rport_io
);
2439 INIT_WORK(&rport
->scan_work
, fc_scsi_scan_rport
);
2440 INIT_WORK(&rport
->stgt_delete_work
, fc_starget_delete
);
2441 INIT_WORK(&rport
->rport_delete_work
, fc_rport_final_delete
);
2443 spin_lock_irqsave(shost
->host_lock
, flags
);
2445 rport
->number
= fc_host
->next_rport_number
++;
2446 if (rport
->roles
& FC_PORT_ROLE_FCP_TARGET
)
2447 rport
->scsi_target_id
= fc_host
->next_target_id
++;
2449 rport
->scsi_target_id
= -1;
2450 list_add_tail(&rport
->peers
, &fc_host
->rports
);
2451 get_device(&shost
->shost_gendev
); /* for fc_host->rport list */
2453 spin_unlock_irqrestore(shost
->host_lock
, flags
);
2456 device_initialize(dev
); /* takes self reference */
2457 dev
->parent
= get_device(&shost
->shost_gendev
); /* parent reference */
2458 dev
->release
= fc_rport_dev_release
;
2459 sprintf(dev
->bus_id
, "rport-%d:%d-%d",
2460 shost
->host_no
, channel
, rport
->number
);
2461 transport_setup_device(dev
);
2463 error
= device_add(dev
);
2465 printk(KERN_ERR
"FC Remote Port device_add failed\n");
2468 transport_add_device(dev
);
2469 transport_configure_device(dev
);
2471 if (rport
->roles
& FC_PORT_ROLE_FCP_TARGET
) {
2472 /* initiate a scan of the target */
2473 rport
->flags
|= FC_RPORT_SCAN_PENDING
;
2474 scsi_queue_work(shost
, &rport
->scan_work
);
2480 transport_destroy_device(dev
);
2481 spin_lock_irqsave(shost
->host_lock
, flags
);
2482 list_del(&rport
->peers
);
2483 put_device(&shost
->shost_gendev
); /* for fc_host->rport list */
2484 spin_unlock_irqrestore(shost
->host_lock
, flags
);
2485 put_device(dev
->parent
);
2491 * fc_remote_port_add - notify fc transport of the existence of a remote FC port.
2492 * @shost: scsi host the remote port is connected to.
2493 * @channel: Channel on shost port connected to.
2494 * @ids: The world wide names, fc address, and FC4 port
2495 * roles for the remote port.
2497 * The LLDD calls this routine to notify the transport of the existence
2498 * of a remote port. The LLDD provides the unique identifiers (wwpn,wwn)
2499 * of the port, it's FC address (port_id), and the FC4 roles that are
2500 * active for the port.
2502 * For ports that are FCP targets (aka scsi targets), the FC transport
2503 * maintains consistent target id bindings on behalf of the LLDD.
2504 * A consistent target id binding is an assignment of a target id to
2505 * a remote port identifier, which persists while the scsi host is
2506 * attached. The remote port can disappear, then later reappear, and
2507 * it's target id assignment remains the same. This allows for shifts
2508 * in FC addressing (if binding by wwpn or wwnn) with no apparent
2509 * changes to the scsi subsystem which is based on scsi host number and
2510 * target id values. Bindings are only valid during the attachment of
2511 * the scsi host. If the host detaches, then later re-attaches, target
2512 * id bindings may change.
2514 * This routine is responsible for returning a remote port structure.
2515 * The routine will search the list of remote ports it maintains
2516 * internally on behalf of consistent target id mappings. If found, the
2517 * remote port structure will be reused. Otherwise, a new remote port
2518 * structure will be allocated.
2520 * Whenever a remote port is allocated, a new fc_remote_port class
2521 * device is created.
2523 * Should not be called from interrupt context.
2526 * This routine assumes no locks are held on entry.
2529 fc_remote_port_add(struct Scsi_Host
*shost
, int channel
,
2530 struct fc_rport_identifiers
*ids
)
2532 struct fc_internal
*fci
= to_fc_internal(shost
->transportt
);
2533 struct fc_host_attrs
*fc_host
= shost_to_fc_host(shost
);
2534 struct fc_rport
*rport
;
2535 unsigned long flags
;
2538 /* ensure any stgt delete functions are done */
2539 fc_flush_work(shost
);
2542 * Search the list of "active" rports, for an rport that has been
2543 * deleted, but we've held off the real delete while the target
2544 * is in a "blocked" state.
2546 spin_lock_irqsave(shost
->host_lock
, flags
);
2548 list_for_each_entry(rport
, &fc_host
->rports
, peers
) {
2550 if ((rport
->port_state
== FC_PORTSTATE_BLOCKED
) &&
2551 (rport
->channel
== channel
)) {
2553 switch (fc_host
->tgtid_bind_type
) {
2554 case FC_TGTID_BIND_BY_WWPN
:
2555 case FC_TGTID_BIND_NONE
:
2556 if (rport
->port_name
== ids
->port_name
)
2559 case FC_TGTID_BIND_BY_WWNN
:
2560 if (rport
->node_name
== ids
->node_name
)
2563 case FC_TGTID_BIND_BY_ID
:
2564 if (rport
->port_id
== ids
->port_id
)
2571 memcpy(&rport
->node_name
, &ids
->node_name
,
2572 sizeof(rport
->node_name
));
2573 memcpy(&rport
->port_name
, &ids
->port_name
,
2574 sizeof(rport
->port_name
));
2575 rport
->port_id
= ids
->port_id
;
2577 rport
->port_state
= FC_PORTSTATE_ONLINE
;
2578 rport
->roles
= ids
->roles
;
2580 spin_unlock_irqrestore(shost
->host_lock
, flags
);
2582 if (fci
->f
->dd_fcrport_size
)
2583 memset(rport
->dd_data
, 0,
2584 fci
->f
->dd_fcrport_size
);
2587 * If we were not a target, cancel the
2588 * io terminate and rport timers, and
2591 * If we were a target, but our new role
2592 * doesn't indicate a target, leave the
2593 * timers running expecting the role to
2594 * change as the target fully logs in. If
2595 * it doesn't, the target will be torn down.
2597 * If we were a target, and our role shows
2598 * we're still a target, cancel the timers
2599 * and kick off a scan.
2602 /* was a target, not in roles */
2603 if ((rport
->scsi_target_id
!= -1) &&
2604 (!(ids
->roles
& FC_PORT_ROLE_FCP_TARGET
)))
2608 * Stop the fail io and dev_loss timers.
2609 * If they flush, the port_state will
2610 * be checked and will NOOP the function.
2612 if (!cancel_delayed_work(&rport
->fail_io_work
))
2613 fc_flush_devloss(shost
);
2614 if (!cancel_delayed_work(&rport
->dev_loss_work
))
2615 fc_flush_devloss(shost
);
2617 spin_lock_irqsave(shost
->host_lock
, flags
);
2619 rport
->flags
&= ~FC_RPORT_DEVLOSS_PENDING
;
2621 /* if target, initiate a scan */
2622 if (rport
->scsi_target_id
!= -1) {
2623 rport
->flags
|= FC_RPORT_SCAN_PENDING
;
2624 scsi_queue_work(shost
,
2626 spin_unlock_irqrestore(shost
->host_lock
,
2628 scsi_target_unblock(&rport
->dev
);
2630 spin_unlock_irqrestore(shost
->host_lock
,
2639 * Search the bindings array
2640 * Note: if never a FCP target, you won't be on this list
2642 if (fc_host
->tgtid_bind_type
!= FC_TGTID_BIND_NONE
) {
2644 /* search for a matching consistent binding */
2646 list_for_each_entry(rport
, &fc_host
->rport_bindings
,
2648 if (rport
->channel
!= channel
)
2651 switch (fc_host
->tgtid_bind_type
) {
2652 case FC_TGTID_BIND_BY_WWPN
:
2653 if (rport
->port_name
== ids
->port_name
)
2656 case FC_TGTID_BIND_BY_WWNN
:
2657 if (rport
->node_name
== ids
->node_name
)
2660 case FC_TGTID_BIND_BY_ID
:
2661 if (rport
->port_id
== ids
->port_id
)
2664 case FC_TGTID_BIND_NONE
: /* to keep compiler happy */
2669 list_move_tail(&rport
->peers
, &fc_host
->rports
);
2675 memcpy(&rport
->node_name
, &ids
->node_name
,
2676 sizeof(rport
->node_name
));
2677 memcpy(&rport
->port_name
, &ids
->port_name
,
2678 sizeof(rport
->port_name
));
2679 rport
->port_id
= ids
->port_id
;
2680 rport
->roles
= ids
->roles
;
2681 rport
->port_state
= FC_PORTSTATE_ONLINE
;
2683 if (fci
->f
->dd_fcrport_size
)
2684 memset(rport
->dd_data
, 0,
2685 fci
->f
->dd_fcrport_size
);
2687 if (rport
->roles
& FC_PORT_ROLE_FCP_TARGET
) {
2688 /* initiate a scan of the target */
2689 rport
->flags
|= FC_RPORT_SCAN_PENDING
;
2690 scsi_queue_work(shost
, &rport
->scan_work
);
2691 spin_unlock_irqrestore(shost
->host_lock
, flags
);
2692 scsi_target_unblock(&rport
->dev
);
2694 spin_unlock_irqrestore(shost
->host_lock
, flags
);
2700 spin_unlock_irqrestore(shost
->host_lock
, flags
);
2702 /* No consistent binding found - create new remote port entry */
2703 rport
= fc_rport_create(shost
, channel
, ids
);
2707 EXPORT_SYMBOL(fc_remote_port_add
);
2711 * fc_remote_port_delete - notifies the fc transport that a remote port is no longer in existence.
2712 * @rport: The remote port that no longer exists
2714 * The LLDD calls this routine to notify the transport that a remote
2715 * port is no longer part of the topology. Note: Although a port
2716 * may no longer be part of the topology, it may persist in the remote
2717 * ports displayed by the fc_host. We do this under 2 conditions:
2718 * 1) If the port was a scsi target, we delay its deletion by "blocking" it.
2719 * This allows the port to temporarily disappear, then reappear without
2720 * disrupting the SCSI device tree attached to it. During the "blocked"
2721 * period the port will still exist.
2722 * 2) If the port was a scsi target and disappears for longer than we
2723 * expect, we'll delete the port and the tear down the SCSI device tree
2724 * attached to it. However, we want to semi-persist the target id assigned
2725 * to that port if it eventually does exist. The port structure will
2726 * remain (although with minimal information) so that the target id
2729 * If the remote port is not an FCP Target, it will be fully torn down
2730 * and deallocated, including the fc_remote_port class device.
2732 * If the remote port is an FCP Target, the port will be placed in a
2733 * temporary blocked state. From the LLDD's perspective, the rport no
2734 * longer exists. From the SCSI midlayer's perspective, the SCSI target
2735 * exists, but all sdevs on it are blocked from further I/O. The following
2738 * If the remote port does not return (signaled by a LLDD call to
2739 * fc_remote_port_add()) within the dev_loss_tmo timeout, then the
2740 * scsi target is removed - killing all outstanding i/o and removing the
2741 * scsi devices attached ot it. The port structure will be marked Not
2742 * Present and be partially cleared, leaving only enough information to
2743 * recognize the remote port relative to the scsi target id binding if
2744 * it later appears. The port will remain as long as there is a valid
2745 * binding (e.g. until the user changes the binding type or unloads the
2746 * scsi host with the binding).
2748 * If the remote port returns within the dev_loss_tmo value (and matches
2749 * according to the target id binding type), the port structure will be
2750 * reused. If it is no longer a SCSI target, the target will be torn
2751 * down. If it continues to be a SCSI target, then the target will be
2752 * unblocked (allowing i/o to be resumed), and a scan will be activated
2753 * to ensure that all luns are detected.
2755 * Called from normal process context only - cannot be called from interrupt.
2758 * This routine assumes no locks are held on entry.
2761 fc_remote_port_delete(struct fc_rport
*rport
)
2763 struct Scsi_Host
*shost
= rport_to_shost(rport
);
2764 struct fc_internal
*i
= to_fc_internal(shost
->transportt
);
2765 int timeout
= rport
->dev_loss_tmo
;
2766 unsigned long flags
;
2769 * No need to flush the fc_host work_q's, as all adds are synchronous.
2771 * We do need to reclaim the rport scan work element, so eventually
2772 * (in fc_rport_final_delete()) we'll flush the scsi host work_q if
2773 * there's still a scan pending.
2776 spin_lock_irqsave(shost
->host_lock
, flags
);
2778 if (rport
->port_state
!= FC_PORTSTATE_ONLINE
) {
2779 spin_unlock_irqrestore(shost
->host_lock
, flags
);
2784 * In the past, we if this was not an FCP-Target, we would
2785 * unconditionally just jump to deleting the rport.
2786 * However, rports can be used as node containers by the LLDD,
2787 * and its not appropriate to just terminate the rport at the
2788 * first sign of a loss in connectivity. The LLDD may want to
2789 * send ELS traffic to re-validate the login. If the rport is
2790 * immediately deleted, it makes it inappropriate for a node
2792 * So... we now unconditionally wait dev_loss_tmo before
2793 * destroying an rport.
2796 rport
->port_state
= FC_PORTSTATE_BLOCKED
;
2798 rport
->flags
|= FC_RPORT_DEVLOSS_PENDING
;
2800 spin_unlock_irqrestore(shost
->host_lock
, flags
);
2802 if (rport
->roles
& FC_PORT_ROLE_FCP_INITIATOR
&&
2803 shost
->active_mode
& MODE_TARGET
)
2804 fc_tgt_it_nexus_destroy(shost
, (unsigned long)rport
);
2806 scsi_target_block(&rport
->dev
);
2808 /* see if we need to kill io faster than waiting for device loss */
2809 if ((rport
->fast_io_fail_tmo
!= -1) &&
2810 (rport
->fast_io_fail_tmo
< timeout
) && (i
->f
->terminate_rport_io
))
2811 fc_queue_devloss_work(shost
, &rport
->fail_io_work
,
2812 rport
->fast_io_fail_tmo
* HZ
);
2814 /* cap the length the devices can be blocked until they are deleted */
2815 fc_queue_devloss_work(shost
, &rport
->dev_loss_work
, timeout
* HZ
);
2817 EXPORT_SYMBOL(fc_remote_port_delete
);
2820 * fc_remote_port_rolechg - notifies the fc transport that the roles on a remote may have changed.
2821 * @rport: The remote port that changed.
2822 * @roles: New roles for this port.
2824 * Description: The LLDD calls this routine to notify the transport that the
2825 * roles on a remote port may have changed. The largest effect of this is
2826 * if a port now becomes a FCP Target, it must be allocated a
2827 * scsi target id. If the port is no longer a FCP target, any
2828 * scsi target id value assigned to it will persist in case the
2829 * role changes back to include FCP Target. No changes in the scsi
2830 * midlayer will be invoked if the role changes (in the expectation
2831 * that the role will be resumed. If it doesn't normal error processing
2834 * Should not be called from interrupt context.
2837 * This routine assumes no locks are held on entry.
2840 fc_remote_port_rolechg(struct fc_rport
*rport
, u32 roles
)
2842 struct Scsi_Host
*shost
= rport_to_shost(rport
);
2843 struct fc_host_attrs
*fc_host
= shost_to_fc_host(shost
);
2844 unsigned long flags
;
2848 spin_lock_irqsave(shost
->host_lock
, flags
);
2849 if (roles
& FC_PORT_ROLE_FCP_TARGET
) {
2850 if (rport
->scsi_target_id
== -1) {
2851 rport
->scsi_target_id
= fc_host
->next_target_id
++;
2853 } else if (!(rport
->roles
& FC_PORT_ROLE_FCP_TARGET
))
2855 } else if (shost
->active_mode
& MODE_TARGET
) {
2856 ret
= fc_tgt_it_nexus_create(shost
, (unsigned long)rport
,
2857 (char *)&rport
->node_name
);
2859 printk(KERN_ERR
"FC Remore Port tgt nexus failed %d\n",
2863 rport
->roles
= roles
;
2865 spin_unlock_irqrestore(shost
->host_lock
, flags
);
2869 * There may have been a delete timer running on the
2870 * port. Ensure that it is cancelled as we now know
2871 * the port is an FCP Target.
2872 * Note: we know the rport is exists and in an online
2873 * state as the LLDD would not have had an rport
2874 * reference to pass us.
2876 * Take no action on the del_timer failure as the state
2877 * machine state change will validate the
2880 if (!cancel_delayed_work(&rport
->fail_io_work
))
2881 fc_flush_devloss(shost
);
2882 if (!cancel_delayed_work(&rport
->dev_loss_work
))
2883 fc_flush_devloss(shost
);
2885 spin_lock_irqsave(shost
->host_lock
, flags
);
2886 rport
->flags
&= ~FC_RPORT_DEVLOSS_PENDING
;
2887 spin_unlock_irqrestore(shost
->host_lock
, flags
);
2889 /* ensure any stgt delete functions are done */
2890 fc_flush_work(shost
);
2892 /* initiate a scan of the target */
2893 spin_lock_irqsave(shost
->host_lock
, flags
);
2894 rport
->flags
|= FC_RPORT_SCAN_PENDING
;
2895 scsi_queue_work(shost
, &rport
->scan_work
);
2896 spin_unlock_irqrestore(shost
->host_lock
, flags
);
2897 scsi_target_unblock(&rport
->dev
);
2900 EXPORT_SYMBOL(fc_remote_port_rolechg
);
2903 * fc_timeout_deleted_rport - Timeout handler for a deleted remote port.
2904 * @work: rport target that failed to reappear in the allotted time.
2906 * Description: An attempt to delete a remote port blocks, and if it fails
2907 * to return in the allotted time this gets called.
2910 fc_timeout_deleted_rport(struct work_struct
*work
)
2912 struct fc_rport
*rport
=
2913 container_of(work
, struct fc_rport
, dev_loss_work
.work
);
2914 struct Scsi_Host
*shost
= rport_to_shost(rport
);
2915 struct fc_host_attrs
*fc_host
= shost_to_fc_host(shost
);
2916 unsigned long flags
;
2918 spin_lock_irqsave(shost
->host_lock
, flags
);
2920 rport
->flags
&= ~FC_RPORT_DEVLOSS_PENDING
;
2923 * If the port is ONLINE, then it came back. If it was a SCSI
2924 * target, validate it still is. If not, tear down the
2925 * scsi_target on it.
2927 if ((rport
->port_state
== FC_PORTSTATE_ONLINE
) &&
2928 (rport
->scsi_target_id
!= -1) &&
2929 !(rport
->roles
& FC_PORT_ROLE_FCP_TARGET
)) {
2930 dev_printk(KERN_ERR
, &rport
->dev
,
2931 "blocked FC remote port time out: no longer"
2932 " a FCP target, removing starget\n");
2933 spin_unlock_irqrestore(shost
->host_lock
, flags
);
2934 scsi_target_unblock(&rport
->dev
);
2935 fc_queue_work(shost
, &rport
->stgt_delete_work
);
2939 /* NOOP state - we're flushing workq's */
2940 if (rport
->port_state
!= FC_PORTSTATE_BLOCKED
) {
2941 spin_unlock_irqrestore(shost
->host_lock
, flags
);
2942 dev_printk(KERN_ERR
, &rport
->dev
,
2943 "blocked FC remote port time out: leaving"
2945 (rport
->scsi_target_id
!= -1) ? " and starget" : "");
2949 if ((fc_host
->tgtid_bind_type
== FC_TGTID_BIND_NONE
) ||
2950 (rport
->scsi_target_id
== -1)) {
2951 list_del(&rport
->peers
);
2952 rport
->port_state
= FC_PORTSTATE_DELETED
;
2953 dev_printk(KERN_ERR
, &rport
->dev
,
2954 "blocked FC remote port time out: removing"
2956 (rport
->scsi_target_id
!= -1) ? " and starget" : "");
2957 fc_queue_work(shost
, &rport
->rport_delete_work
);
2958 spin_unlock_irqrestore(shost
->host_lock
, flags
);
2962 dev_printk(KERN_ERR
, &rport
->dev
,
2963 "blocked FC remote port time out: removing target and "
2964 "saving binding\n");
2966 list_move_tail(&rport
->peers
, &fc_host
->rport_bindings
);
2969 * Note: We do not remove or clear the hostdata area. This allows
2970 * host-specific target data to persist along with the
2971 * scsi_target_id. It's up to the host to manage it's hostdata area.
2975 * Reinitialize port attributes that may change if the port comes back.
2977 rport
->maxframe_size
= -1;
2978 rport
->supported_classes
= FC_COS_UNSPECIFIED
;
2979 rport
->roles
= FC_PORT_ROLE_UNKNOWN
;
2980 rport
->port_state
= FC_PORTSTATE_NOTPRESENT
;
2982 /* remove the identifiers that aren't used in the consisting binding */
2983 switch (fc_host
->tgtid_bind_type
) {
2984 case FC_TGTID_BIND_BY_WWPN
:
2985 rport
->node_name
= -1;
2986 rport
->port_id
= -1;
2988 case FC_TGTID_BIND_BY_WWNN
:
2989 rport
->port_name
= -1;
2990 rport
->port_id
= -1;
2992 case FC_TGTID_BIND_BY_ID
:
2993 rport
->node_name
= -1;
2994 rport
->port_name
= -1;
2996 case FC_TGTID_BIND_NONE
: /* to keep compiler happy */
3001 * As this only occurs if the remote port (scsi target)
3002 * went away and didn't come back - we'll remove
3003 * all attached scsi devices.
3005 spin_unlock_irqrestore(shost
->host_lock
, flags
);
3007 scsi_target_unblock(&rport
->dev
);
3008 fc_queue_work(shost
, &rport
->stgt_delete_work
);
3012 * fc_timeout_fail_rport_io - Timeout handler for a fast io failing on a disconnected SCSI target.
3013 * @work: rport to terminate io on.
3015 * Notes: Only requests the failure of the io, not that all are flushed
3016 * prior to returning.
3019 fc_timeout_fail_rport_io(struct work_struct
*work
)
3021 struct fc_rport
*rport
=
3022 container_of(work
, struct fc_rport
, fail_io_work
.work
);
3023 struct Scsi_Host
*shost
= rport_to_shost(rport
);
3024 struct fc_internal
*i
= to_fc_internal(shost
->transportt
);
3026 if (rport
->port_state
!= FC_PORTSTATE_BLOCKED
)
3029 i
->f
->terminate_rport_io(rport
);
3033 * fc_scsi_scan_rport - called to perform a scsi scan on a remote port.
3034 * @work: remote port to be scanned.
3037 fc_scsi_scan_rport(struct work_struct
*work
)
3039 struct fc_rport
*rport
=
3040 container_of(work
, struct fc_rport
, scan_work
);
3041 struct Scsi_Host
*shost
= rport_to_shost(rport
);
3042 struct fc_internal
*i
= to_fc_internal(shost
->transportt
);
3043 unsigned long flags
;
3045 if ((rport
->port_state
== FC_PORTSTATE_ONLINE
) &&
3046 (rport
->roles
& FC_PORT_ROLE_FCP_TARGET
) &&
3047 !(i
->f
->disable_target_scan
)) {
3048 scsi_scan_target(&rport
->dev
, rport
->channel
,
3049 rport
->scsi_target_id
, SCAN_WILD_CARD
, 1);
3052 spin_lock_irqsave(shost
->host_lock
, flags
);
3053 rport
->flags
&= ~FC_RPORT_SCAN_PENDING
;
3054 spin_unlock_irqrestore(shost
->host_lock
, flags
);
3059 * fc_vport_create - allocates and creates a FC virtual port.
3060 * @shost: scsi host the virtual port is connected to.
3061 * @channel: Channel on shost port connected to.
3062 * @pdev: parent device for vport
3063 * @ids: The world wide names, FC4 port roles, etc for
3065 * @ret_vport: The pointer to the created vport.
3067 * Allocates and creates the vport structure, calls the parent host
3068 * to instantiate the vport, the completes w/ class and sysfs creation.
3071 * This routine assumes no locks are held on entry.
3074 fc_vport_create(struct Scsi_Host
*shost
, int channel
, struct device
*pdev
,
3075 struct fc_vport_identifiers
*ids
, struct fc_vport
**ret_vport
)
3077 struct fc_host_attrs
*fc_host
= shost_to_fc_host(shost
);
3078 struct fc_internal
*fci
= to_fc_internal(shost
->transportt
);
3079 struct fc_vport
*vport
;
3081 unsigned long flags
;
3087 if ( ! fci
->f
->vport_create
)
3090 size
= (sizeof(struct fc_vport
) + fci
->f
->dd_fcvport_size
);
3091 vport
= kzalloc(size
, GFP_KERNEL
);
3092 if (unlikely(!vport
)) {
3093 printk(KERN_ERR
"%s: allocation failure\n", __FUNCTION__
);
3097 vport
->vport_state
= FC_VPORT_UNKNOWN
;
3098 vport
->vport_last_state
= FC_VPORT_UNKNOWN
;
3099 vport
->node_name
= ids
->node_name
;
3100 vport
->port_name
= ids
->port_name
;
3101 vport
->roles
= ids
->roles
;
3102 vport
->vport_type
= ids
->vport_type
;
3103 if (fci
->f
->dd_fcvport_size
)
3104 vport
->dd_data
= &vport
[1];
3105 vport
->shost
= shost
;
3106 vport
->channel
= channel
;
3107 vport
->flags
= FC_VPORT_CREATING
;
3108 INIT_WORK(&vport
->vport_delete_work
, fc_vport_sched_delete
);
3110 spin_lock_irqsave(shost
->host_lock
, flags
);
3112 if (fc_host
->npiv_vports_inuse
>= fc_host
->max_npiv_vports
) {
3113 spin_unlock_irqrestore(shost
->host_lock
, flags
);
3117 fc_host
->npiv_vports_inuse
++;
3118 vport
->number
= fc_host
->next_vport_number
++;
3119 list_add_tail(&vport
->peers
, &fc_host
->vports
);
3120 get_device(&shost
->shost_gendev
); /* for fc_host->vport list */
3122 spin_unlock_irqrestore(shost
->host_lock
, flags
);
3125 device_initialize(dev
); /* takes self reference */
3126 dev
->parent
= get_device(pdev
); /* takes parent reference */
3127 dev
->release
= fc_vport_dev_release
;
3128 sprintf(dev
->bus_id
, "vport-%d:%d-%d",
3129 shost
->host_no
, channel
, vport
->number
);
3130 transport_setup_device(dev
);
3132 error
= device_add(dev
);
3134 printk(KERN_ERR
"FC Virtual Port device_add failed\n");
3137 transport_add_device(dev
);
3138 transport_configure_device(dev
);
3140 error
= fci
->f
->vport_create(vport
, ids
->disable
);
3142 printk(KERN_ERR
"FC Virtual Port LLDD Create failed\n");
3143 goto delete_vport_all
;
3147 * if the parent isn't the physical adapter's Scsi_Host, ensure
3148 * the Scsi_Host at least contains ia symlink to the vport.
3150 if (pdev
!= &shost
->shost_gendev
) {
3151 error
= sysfs_create_link(&shost
->shost_gendev
.kobj
,
3152 &dev
->kobj
, dev
->bus_id
);
3155 "%s: Cannot create vport symlinks for "
3157 __FUNCTION__
, dev
->bus_id
, error
);
3159 spin_lock_irqsave(shost
->host_lock
, flags
);
3160 vport
->flags
&= ~FC_VPORT_CREATING
;
3161 spin_unlock_irqrestore(shost
->host_lock
, flags
);
3163 dev_printk(KERN_NOTICE
, pdev
,
3164 "%s created via shost%d channel %d\n", dev
->bus_id
,
3165 shost
->host_no
, channel
);
3172 transport_remove_device(dev
);
3175 transport_destroy_device(dev
);
3176 spin_lock_irqsave(shost
->host_lock
, flags
);
3177 list_del(&vport
->peers
);
3178 put_device(&shost
->shost_gendev
); /* for fc_host->vport list */
3179 fc_host
->npiv_vports_inuse
--;
3180 spin_unlock_irqrestore(shost
->host_lock
, flags
);
3181 put_device(dev
->parent
);
3189 * fc_vport_terminate - Admin App or LLDD requests termination of a vport
3190 * @vport: fc_vport to be terminated
3192 * Calls the LLDD vport_delete() function, then deallocates and removes
3193 * the vport from the shost and object tree.
3196 * This routine assumes no locks are held on entry.
3199 fc_vport_terminate(struct fc_vport
*vport
)
3201 struct Scsi_Host
*shost
= vport_to_shost(vport
);
3202 struct fc_host_attrs
*fc_host
= shost_to_fc_host(shost
);
3203 struct fc_internal
*i
= to_fc_internal(shost
->transportt
);
3204 struct device
*dev
= &vport
->dev
;
3205 unsigned long flags
;
3208 spin_lock_irqsave(shost
->host_lock
, flags
);
3209 if (vport
->flags
& FC_VPORT_CREATING
) {
3210 spin_unlock_irqrestore(shost
->host_lock
, flags
);
3213 if (vport
->flags
& (FC_VPORT_DEL
)) {
3214 spin_unlock_irqrestore(shost
->host_lock
, flags
);
3217 vport
->flags
|= FC_VPORT_DELETING
;
3218 spin_unlock_irqrestore(shost
->host_lock
, flags
);
3220 if (i
->f
->vport_delete
)
3221 stat
= i
->f
->vport_delete(vport
);
3225 spin_lock_irqsave(shost
->host_lock
, flags
);
3226 vport
->flags
&= ~FC_VPORT_DELETING
;
3228 vport
->flags
|= FC_VPORT_DELETED
;
3229 list_del(&vport
->peers
);
3230 fc_host
->npiv_vports_inuse
--;
3231 put_device(&shost
->shost_gendev
); /* for fc_host->vport list */
3233 spin_unlock_irqrestore(shost
->host_lock
, flags
);
3238 if (dev
->parent
!= &shost
->shost_gendev
)
3239 sysfs_remove_link(&shost
->shost_gendev
.kobj
, dev
->bus_id
);
3240 transport_remove_device(dev
);
3242 transport_destroy_device(dev
);
3245 * Removing our self-reference should mean our
3246 * release function gets called, which will drop the remaining
3247 * parent reference and free the data structure.
3249 put_device(dev
); /* for self-reference */
3251 return 0; /* SUCCESS */
3253 EXPORT_SYMBOL(fc_vport_terminate
);
3256 * fc_vport_sched_delete - workq-based delete request for a vport
3257 * @work: vport to be deleted.
3260 fc_vport_sched_delete(struct work_struct
*work
)
3262 struct fc_vport
*vport
=
3263 container_of(work
, struct fc_vport
, vport_delete_work
);
3266 stat
= fc_vport_terminate(vport
);
3268 dev_printk(KERN_ERR
, vport
->dev
.parent
,
3269 "%s: %s could not be deleted created via "
3270 "shost%d channel %d - error %d\n", __FUNCTION__
,
3271 vport
->dev
.bus_id
, vport
->shost
->host_no
,
3272 vport
->channel
, stat
);
3276 /* Original Author: Martin Hicks */
3277 MODULE_AUTHOR("James Smart");
3278 MODULE_DESCRIPTION("FC Transport Attributes");
3279 MODULE_LICENSE("GPL");
3281 module_init(fc_transport_init
);
3282 module_exit(fc_transport_exit
);