Commit | Line | Data |
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9ef3e4a4 | 1 | /* |
1da177e4 LT |
2 | * FiberChannel transport specific attributes exported to sysfs. |
3 | * | |
4 | * Copyright (c) 2003 Silicon Graphics, Inc. All rights reserved. | |
5 | * | |
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. | |
10 | * | |
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. | |
15 | * | |
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 | |
19 | * | |
20 | * ======== | |
21 | * | |
a53eb5e0 | 22 | * Copyright (C) 2004-2007 James Smart, Emulex Corporation |
1da177e4 LT |
23 | * Rewrite for host, target, device, and remote port attributes, |
24 | * statistics, and service functions... | |
9ef3e4a4 | 25 | * Add vports, etc |
1da177e4 LT |
26 | * |
27 | */ | |
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> | |
c829c394 | 34 | #include <scsi/scsi_cmnd.h> |
84314fd4 JS |
35 | #include <linux/netlink.h> |
36 | #include <net/netlink.h> | |
37 | #include <scsi/scsi_netlink_fc.h> | |
1da177e4 | 38 | #include "scsi_priv.h" |
7525236d | 39 | #include "scsi_transport_fc_internal.h" |
1da177e4 | 40 | |
aedf3497 | 41 | static int fc_queue_work(struct Scsi_Host *, struct work_struct *); |
9ef3e4a4 | 42 | static void fc_vport_sched_delete(struct work_struct *work); |
a30c3f69 | 43 | static int fc_vport_setup(struct Scsi_Host *shost, int channel, |
a53eb5e0 JS |
44 | struct device *pdev, struct fc_vport_identifiers *ids, |
45 | struct fc_vport **vport); | |
46 | ||
1da177e4 LT |
47 | /* |
48 | * Redefine so that we can have same named attributes in the | |
49 | * sdev/starget/host objects. | |
50 | */ | |
ee959b00 TJ |
51 | #define FC_DEVICE_ATTR(_prefix,_name,_mode,_show,_store) \ |
52 | struct device_attribute device_attr_##_prefix##_##_name = \ | |
1da177e4 LT |
53 | __ATTR(_name,_mode,_show,_store) |
54 | ||
55 | #define fc_enum_name_search(title, table_type, table) \ | |
56 | static const char *get_fc_##title##_name(enum table_type table_key) \ | |
57 | { \ | |
58 | int i; \ | |
59 | char *name = NULL; \ | |
60 | \ | |
6391a113 | 61 | for (i = 0; i < ARRAY_SIZE(table); i++) { \ |
1da177e4 LT |
62 | if (table[i].value == table_key) { \ |
63 | name = table[i].name; \ | |
64 | break; \ | |
65 | } \ | |
66 | } \ | |
67 | return name; \ | |
68 | } | |
69 | ||
70 | #define fc_enum_name_match(title, table_type, table) \ | |
71 | static int get_fc_##title##_match(const char *table_key, \ | |
72 | enum table_type *value) \ | |
73 | { \ | |
74 | int i; \ | |
75 | \ | |
6391a113 | 76 | for (i = 0; i < ARRAY_SIZE(table); i++) { \ |
1da177e4 LT |
77 | if (strncmp(table_key, table[i].name, \ |
78 | table[i].matchlen) == 0) { \ | |
79 | *value = table[i].value; \ | |
80 | return 0; /* success */ \ | |
81 | } \ | |
82 | } \ | |
83 | return 1; /* failure */ \ | |
84 | } | |
85 | ||
86 | ||
87 | /* Convert fc_port_type values to ascii string name */ | |
88 | static struct { | |
89 | enum fc_port_type value; | |
90 | char *name; | |
91 | } fc_port_type_names[] = { | |
92 | { FC_PORTTYPE_UNKNOWN, "Unknown" }, | |
93 | { FC_PORTTYPE_OTHER, "Other" }, | |
94 | { FC_PORTTYPE_NOTPRESENT, "Not Present" }, | |
95 | { FC_PORTTYPE_NPORT, "NPort (fabric via point-to-point)" }, | |
96 | { FC_PORTTYPE_NLPORT, "NLPort (fabric via loop)" }, | |
97 | { FC_PORTTYPE_LPORT, "LPort (private loop)" }, | |
951948a3 | 98 | { FC_PORTTYPE_PTP, "Point-To-Point (direct nport connection)" }, |
a53eb5e0 | 99 | { FC_PORTTYPE_NPIV, "NPIV VPORT" }, |
1da177e4 LT |
100 | }; |
101 | fc_enum_name_search(port_type, fc_port_type, fc_port_type_names) | |
102 | #define FC_PORTTYPE_MAX_NAMELEN 50 | |
103 | ||
a53eb5e0 JS |
104 | /* Reuse fc_port_type enum function for vport_type */ |
105 | #define get_fc_vport_type_name get_fc_port_type_name | |
106 | ||
1da177e4 | 107 | |
84314fd4 JS |
108 | /* Convert fc_host_event_code values to ascii string name */ |
109 | static const struct { | |
110 | enum fc_host_event_code value; | |
111 | char *name; | |
112 | } fc_host_event_code_names[] = { | |
113 | { FCH_EVT_LIP, "lip" }, | |
114 | { FCH_EVT_LINKUP, "link_up" }, | |
115 | { FCH_EVT_LINKDOWN, "link_down" }, | |
116 | { FCH_EVT_LIPRESET, "lip_reset" }, | |
117 | { FCH_EVT_RSCN, "rscn" }, | |
118 | { FCH_EVT_ADAPTER_CHANGE, "adapter_chg" }, | |
119 | { FCH_EVT_PORT_UNKNOWN, "port_unknown" }, | |
120 | { FCH_EVT_PORT_ONLINE, "port_online" }, | |
121 | { FCH_EVT_PORT_OFFLINE, "port_offline" }, | |
122 | { FCH_EVT_PORT_FABRIC, "port_fabric" }, | |
123 | { FCH_EVT_LINK_UNKNOWN, "link_unknown" }, | |
124 | { FCH_EVT_VENDOR_UNIQUE, "vendor_unique" }, | |
125 | }; | |
126 | fc_enum_name_search(host_event_code, fc_host_event_code, | |
127 | fc_host_event_code_names) | |
128 | #define FC_HOST_EVENT_CODE_MAX_NAMELEN 30 | |
129 | ||
130 | ||
1da177e4 LT |
131 | /* Convert fc_port_state values to ascii string name */ |
132 | static struct { | |
133 | enum fc_port_state value; | |
134 | char *name; | |
135 | } fc_port_state_names[] = { | |
136 | { FC_PORTSTATE_UNKNOWN, "Unknown" }, | |
137 | { FC_PORTSTATE_NOTPRESENT, "Not Present" }, | |
138 | { FC_PORTSTATE_ONLINE, "Online" }, | |
139 | { FC_PORTSTATE_OFFLINE, "Offline" }, | |
140 | { FC_PORTSTATE_BLOCKED, "Blocked" }, | |
141 | { FC_PORTSTATE_BYPASSED, "Bypassed" }, | |
142 | { FC_PORTSTATE_DIAGNOSTICS, "Diagnostics" }, | |
143 | { FC_PORTSTATE_LINKDOWN, "Linkdown" }, | |
144 | { FC_PORTSTATE_ERROR, "Error" }, | |
145 | { FC_PORTSTATE_LOOPBACK, "Loopback" }, | |
42e33148 | 146 | { FC_PORTSTATE_DELETED, "Deleted" }, |
1da177e4 LT |
147 | }; |
148 | fc_enum_name_search(port_state, fc_port_state, fc_port_state_names) | |
149 | #define FC_PORTSTATE_MAX_NAMELEN 20 | |
150 | ||
151 | ||
a53eb5e0 JS |
152 | /* Convert fc_vport_state values to ascii string name */ |
153 | static struct { | |
154 | enum fc_vport_state value; | |
155 | char *name; | |
156 | } fc_vport_state_names[] = { | |
157 | { FC_VPORT_UNKNOWN, "Unknown" }, | |
158 | { FC_VPORT_ACTIVE, "Active" }, | |
159 | { FC_VPORT_DISABLED, "Disabled" }, | |
160 | { FC_VPORT_LINKDOWN, "Linkdown" }, | |
161 | { FC_VPORT_INITIALIZING, "Initializing" }, | |
162 | { FC_VPORT_NO_FABRIC_SUPP, "No Fabric Support" }, | |
163 | { FC_VPORT_NO_FABRIC_RSCS, "No Fabric Resources" }, | |
164 | { FC_VPORT_FABRIC_LOGOUT, "Fabric Logout" }, | |
165 | { FC_VPORT_FABRIC_REJ_WWN, "Fabric Rejected WWN" }, | |
166 | { FC_VPORT_FAILED, "VPort Failed" }, | |
167 | }; | |
168 | fc_enum_name_search(vport_state, fc_vport_state, fc_vport_state_names) | |
169 | #define FC_VPORTSTATE_MAX_NAMELEN 24 | |
170 | ||
171 | /* Reuse fc_vport_state enum function for vport_last_state */ | |
172 | #define get_fc_vport_last_state_name get_fc_vport_state_name | |
173 | ||
174 | ||
1da177e4 | 175 | /* Convert fc_tgtid_binding_type values to ascii string name */ |
0ad78200 | 176 | static const struct { |
1da177e4 LT |
177 | enum fc_tgtid_binding_type value; |
178 | char *name; | |
179 | int matchlen; | |
180 | } fc_tgtid_binding_type_names[] = { | |
181 | { FC_TGTID_BIND_NONE, "none", 4 }, | |
182 | { FC_TGTID_BIND_BY_WWPN, "wwpn (World Wide Port Name)", 4 }, | |
183 | { FC_TGTID_BIND_BY_WWNN, "wwnn (World Wide Node Name)", 4 }, | |
184 | { FC_TGTID_BIND_BY_ID, "port_id (FC Address)", 7 }, | |
185 | }; | |
186 | fc_enum_name_search(tgtid_bind_type, fc_tgtid_binding_type, | |
187 | fc_tgtid_binding_type_names) | |
188 | fc_enum_name_match(tgtid_bind_type, fc_tgtid_binding_type, | |
189 | fc_tgtid_binding_type_names) | |
190 | #define FC_BINDTYPE_MAX_NAMELEN 30 | |
191 | ||
192 | ||
193 | #define fc_bitfield_name_search(title, table) \ | |
194 | static ssize_t \ | |
195 | get_fc_##title##_names(u32 table_key, char *buf) \ | |
196 | { \ | |
197 | char *prefix = ""; \ | |
198 | ssize_t len = 0; \ | |
199 | int i; \ | |
200 | \ | |
6391a113 | 201 | for (i = 0; i < ARRAY_SIZE(table); i++) { \ |
1da177e4 LT |
202 | if (table[i].value & table_key) { \ |
203 | len += sprintf(buf + len, "%s%s", \ | |
204 | prefix, table[i].name); \ | |
205 | prefix = ", "; \ | |
206 | } \ | |
207 | } \ | |
208 | len += sprintf(buf + len, "\n"); \ | |
209 | return len; \ | |
210 | } | |
211 | ||
212 | ||
213 | /* Convert FC_COS bit values to ascii string name */ | |
0ad78200 | 214 | static const struct { |
1da177e4 LT |
215 | u32 value; |
216 | char *name; | |
217 | } fc_cos_names[] = { | |
218 | { FC_COS_CLASS1, "Class 1" }, | |
219 | { FC_COS_CLASS2, "Class 2" }, | |
220 | { FC_COS_CLASS3, "Class 3" }, | |
221 | { FC_COS_CLASS4, "Class 4" }, | |
222 | { FC_COS_CLASS6, "Class 6" }, | |
223 | }; | |
224 | fc_bitfield_name_search(cos, fc_cos_names) | |
225 | ||
226 | ||
227 | /* Convert FC_PORTSPEED bit values to ascii string name */ | |
0ad78200 | 228 | static const struct { |
1da177e4 LT |
229 | u32 value; |
230 | char *name; | |
231 | } fc_port_speed_names[] = { | |
232 | { FC_PORTSPEED_1GBIT, "1 Gbit" }, | |
233 | { FC_PORTSPEED_2GBIT, "2 Gbit" }, | |
234 | { FC_PORTSPEED_4GBIT, "4 Gbit" }, | |
235 | { FC_PORTSPEED_10GBIT, "10 Gbit" }, | |
c3d2350a JS |
236 | { FC_PORTSPEED_8GBIT, "8 Gbit" }, |
237 | { FC_PORTSPEED_16GBIT, "16 Gbit" }, | |
1da177e4 LT |
238 | { FC_PORTSPEED_NOT_NEGOTIATED, "Not Negotiated" }, |
239 | }; | |
240 | fc_bitfield_name_search(port_speed, fc_port_speed_names) | |
241 | ||
242 | ||
243 | static int | |
244 | show_fc_fc4s (char *buf, u8 *fc4_list) | |
245 | { | |
246 | int i, len=0; | |
247 | ||
248 | for (i = 0; i < FC_FC4_LIST_SIZE; i++, fc4_list++) | |
249 | len += sprintf(buf + len , "0x%02x ", *fc4_list); | |
250 | len += sprintf(buf + len, "\n"); | |
251 | return len; | |
252 | } | |
253 | ||
254 | ||
a53eb5e0 | 255 | /* Convert FC_PORT_ROLE bit values to ascii string name */ |
0ad78200 | 256 | static const struct { |
1da177e4 LT |
257 | u32 value; |
258 | char *name; | |
a53eb5e0 JS |
259 | } fc_port_role_names[] = { |
260 | { FC_PORT_ROLE_FCP_TARGET, "FCP Target" }, | |
261 | { FC_PORT_ROLE_FCP_INITIATOR, "FCP Initiator" }, | |
262 | { FC_PORT_ROLE_IP_PORT, "IP Port" }, | |
1da177e4 | 263 | }; |
a53eb5e0 | 264 | fc_bitfield_name_search(port_roles, fc_port_role_names) |
1da177e4 LT |
265 | |
266 | /* | |
267 | * Define roles that are specific to port_id. Values are relative to ROLE_MASK. | |
268 | */ | |
269 | #define FC_WELLKNOWN_PORTID_MASK 0xfffff0 | |
270 | #define FC_WELLKNOWN_ROLE_MASK 0x00000f | |
271 | #define FC_FPORT_PORTID 0x00000e | |
272 | #define FC_FABCTLR_PORTID 0x00000d | |
273 | #define FC_DIRSRVR_PORTID 0x00000c | |
274 | #define FC_TIMESRVR_PORTID 0x00000b | |
275 | #define FC_MGMTSRVR_PORTID 0x00000a | |
276 | ||
277 | ||
c4028958 DH |
278 | static void fc_timeout_deleted_rport(struct work_struct *work); |
279 | static void fc_timeout_fail_rport_io(struct work_struct *work); | |
280 | static void fc_scsi_scan_rport(struct work_struct *work); | |
1da177e4 LT |
281 | |
282 | /* | |
283 | * Attribute counts pre object type... | |
284 | * Increase these values if you add attributes | |
285 | */ | |
286 | #define FC_STARGET_NUM_ATTRS 3 | |
0f29b966 | 287 | #define FC_RPORT_NUM_ATTRS 10 |
a53eb5e0 JS |
288 | #define FC_VPORT_NUM_ATTRS 9 |
289 | #define FC_HOST_NUM_ATTRS 21 | |
1da177e4 LT |
290 | |
291 | struct fc_internal { | |
292 | struct scsi_transport_template t; | |
293 | struct fc_function_template *f; | |
294 | ||
295 | /* | |
296 | * For attributes : each object has : | |
297 | * An array of the actual attributes structures | |
298 | * An array of null-terminated pointers to the attribute | |
299 | * structures - used for mid-layer interaction. | |
300 | * | |
301 | * The attribute containers for the starget and host are are | |
302 | * part of the midlayer. As the remote port is specific to the | |
303 | * fc transport, we must provide the attribute container. | |
304 | */ | |
ee959b00 | 305 | struct device_attribute private_starget_attrs[ |
1da177e4 | 306 | FC_STARGET_NUM_ATTRS]; |
ee959b00 | 307 | struct device_attribute *starget_attrs[FC_STARGET_NUM_ATTRS + 1]; |
1da177e4 | 308 | |
ee959b00 TJ |
309 | struct device_attribute private_host_attrs[FC_HOST_NUM_ATTRS]; |
310 | struct device_attribute *host_attrs[FC_HOST_NUM_ATTRS + 1]; | |
1da177e4 LT |
311 | |
312 | struct transport_container rport_attr_cont; | |
ee959b00 TJ |
313 | struct device_attribute private_rport_attrs[FC_RPORT_NUM_ATTRS]; |
314 | struct device_attribute *rport_attrs[FC_RPORT_NUM_ATTRS + 1]; | |
a53eb5e0 JS |
315 | |
316 | struct transport_container vport_attr_cont; | |
ee959b00 TJ |
317 | struct device_attribute private_vport_attrs[FC_VPORT_NUM_ATTRS]; |
318 | struct device_attribute *vport_attrs[FC_VPORT_NUM_ATTRS + 1]; | |
1da177e4 LT |
319 | }; |
320 | ||
321 | #define to_fc_internal(tmpl) container_of(tmpl, struct fc_internal, t) | |
322 | ||
d0a7e574 | 323 | static int fc_target_setup(struct transport_container *tc, struct device *dev, |
ee959b00 | 324 | struct device *cdev) |
1da177e4 LT |
325 | { |
326 | struct scsi_target *starget = to_scsi_target(dev); | |
327 | struct fc_rport *rport = starget_to_rport(starget); | |
328 | ||
329 | /* | |
330 | * if parent is remote port, use values from remote port. | |
331 | * Otherwise, this host uses the fc_transport, but not the | |
332 | * remote port interface. As such, initialize to known non-values. | |
333 | */ | |
334 | if (rport) { | |
335 | fc_starget_node_name(starget) = rport->node_name; | |
336 | fc_starget_port_name(starget) = rport->port_name; | |
337 | fc_starget_port_id(starget) = rport->port_id; | |
338 | } else { | |
339 | fc_starget_node_name(starget) = -1; | |
340 | fc_starget_port_name(starget) = -1; | |
341 | fc_starget_port_id(starget) = -1; | |
342 | } | |
343 | ||
344 | return 0; | |
345 | } | |
346 | ||
347 | static DECLARE_TRANSPORT_CLASS(fc_transport_class, | |
348 | "fc_transport", | |
349 | fc_target_setup, | |
350 | NULL, | |
351 | NULL); | |
352 | ||
d0a7e574 | 353 | static int fc_host_setup(struct transport_container *tc, struct device *dev, |
ee959b00 | 354 | struct device *cdev) |
1da177e4 LT |
355 | { |
356 | struct Scsi_Host *shost = dev_to_shost(dev); | |
aedf3497 | 357 | struct fc_host_attrs *fc_host = shost_to_fc_host(shost); |
1da177e4 | 358 | |
9ef3e4a4 | 359 | /* |
1da177e4 LT |
360 | * Set default values easily detected by the midlayer as |
361 | * failure cases. The scsi lldd is responsible for initializing | |
362 | * all transport attributes to valid values per host. | |
363 | */ | |
aedf3497 JS |
364 | fc_host->node_name = -1; |
365 | fc_host->port_name = -1; | |
366 | fc_host->permanent_port_name = -1; | |
367 | fc_host->supported_classes = FC_COS_UNSPECIFIED; | |
368 | memset(fc_host->supported_fc4s, 0, | |
369 | sizeof(fc_host->supported_fc4s)); | |
aedf3497 JS |
370 | fc_host->supported_speeds = FC_PORTSPEED_UNKNOWN; |
371 | fc_host->maxframe_size = -1; | |
a53eb5e0 | 372 | fc_host->max_npiv_vports = 0; |
aedf3497 JS |
373 | memset(fc_host->serial_number, 0, |
374 | sizeof(fc_host->serial_number)); | |
375 | ||
376 | fc_host->port_id = -1; | |
377 | fc_host->port_type = FC_PORTTYPE_UNKNOWN; | |
378 | fc_host->port_state = FC_PORTSTATE_UNKNOWN; | |
379 | memset(fc_host->active_fc4s, 0, | |
380 | sizeof(fc_host->active_fc4s)); | |
381 | fc_host->speed = FC_PORTSPEED_UNKNOWN; | |
382 | fc_host->fabric_name = -1; | |
b8d08210 JS |
383 | memset(fc_host->symbolic_name, 0, sizeof(fc_host->symbolic_name)); |
384 | memset(fc_host->system_hostname, 0, sizeof(fc_host->system_hostname)); | |
aedf3497 JS |
385 | |
386 | fc_host->tgtid_bind_type = FC_TGTID_BIND_BY_WWPN; | |
387 | ||
388 | INIT_LIST_HEAD(&fc_host->rports); | |
389 | INIT_LIST_HEAD(&fc_host->rport_bindings); | |
a53eb5e0 | 390 | INIT_LIST_HEAD(&fc_host->vports); |
aedf3497 JS |
391 | fc_host->next_rport_number = 0; |
392 | fc_host->next_target_id = 0; | |
a53eb5e0 JS |
393 | fc_host->next_vport_number = 0; |
394 | fc_host->npiv_vports_inuse = 0; | |
aedf3497 | 395 | |
aab0de24 KS |
396 | snprintf(fc_host->work_q_name, sizeof(fc_host->work_q_name), |
397 | "fc_wq_%d", shost->host_no); | |
aedf3497 JS |
398 | fc_host->work_q = create_singlethread_workqueue( |
399 | fc_host->work_q_name); | |
400 | if (!fc_host->work_q) | |
401 | return -ENOMEM; | |
402 | ||
aab0de24 KS |
403 | snprintf(fc_host->devloss_work_q_name, |
404 | sizeof(fc_host->devloss_work_q_name), | |
405 | "fc_dl_%d", shost->host_no); | |
aedf3497 JS |
406 | fc_host->devloss_work_q = create_singlethread_workqueue( |
407 | fc_host->devloss_work_q_name); | |
408 | if (!fc_host->devloss_work_q) { | |
409 | destroy_workqueue(fc_host->work_q); | |
410 | fc_host->work_q = NULL; | |
411 | return -ENOMEM; | |
412 | } | |
413 | ||
1da177e4 LT |
414 | return 0; |
415 | } | |
416 | ||
417 | static DECLARE_TRANSPORT_CLASS(fc_host_class, | |
418 | "fc_host", | |
419 | fc_host_setup, | |
420 | NULL, | |
421 | NULL); | |
422 | ||
423 | /* | |
424 | * Setup and Remove actions for remote ports are handled | |
425 | * in the service functions below. | |
426 | */ | |
427 | static DECLARE_TRANSPORT_CLASS(fc_rport_class, | |
428 | "fc_remote_ports", | |
429 | NULL, | |
430 | NULL, | |
431 | NULL); | |
432 | ||
a53eb5e0 JS |
433 | /* |
434 | * Setup and Remove actions for virtual ports are handled | |
435 | * in the service functions below. | |
436 | */ | |
437 | static DECLARE_TRANSPORT_CLASS(fc_vport_class, | |
438 | "fc_vports", | |
439 | NULL, | |
440 | NULL, | |
441 | NULL); | |
442 | ||
1da177e4 LT |
443 | /* |
444 | * Module Parameters | |
445 | */ | |
446 | ||
447 | /* | |
448 | * dev_loss_tmo: the default number of seconds that the FC transport | |
449 | * should insulate the loss of a remote port. | |
450 | * The maximum will be capped by the value of SCSI_DEVICE_BLOCK_MAX_TIMEOUT. | |
451 | */ | |
1c9e16e4 | 452 | static unsigned int fc_dev_loss_tmo = 60; /* seconds */ |
1da177e4 | 453 | |
10f4b89a | 454 | module_param_named(dev_loss_tmo, fc_dev_loss_tmo, uint, S_IRUGO|S_IWUSR); |
1da177e4 LT |
455 | MODULE_PARM_DESC(dev_loss_tmo, |
456 | "Maximum number of seconds that the FC transport should" | |
457 | " insulate the loss of a remote port. Once this value is" | |
458 | " exceeded, the scsi target is removed. Value should be" | |
459 | " between 1 and SCSI_DEVICE_BLOCK_MAX_TIMEOUT."); | |
460 | ||
eb44820c | 461 | /* |
84314fd4 | 462 | * Netlink Infrastructure |
eb44820c | 463 | */ |
84314fd4 JS |
464 | |
465 | static atomic_t fc_event_seq; | |
466 | ||
467 | /** | |
468 | * fc_get_event_number - Obtain the next sequential FC event number | |
469 | * | |
470 | * Notes: | |
eb44820c | 471 | * We could have inlined this, but it would have required fc_event_seq to |
84314fd4 JS |
472 | * be exposed. For now, live with the subroutine call. |
473 | * Atomic used to avoid lock/unlock... | |
eb44820c | 474 | */ |
84314fd4 JS |
475 | u32 |
476 | fc_get_event_number(void) | |
477 | { | |
478 | return atomic_add_return(1, &fc_event_seq); | |
479 | } | |
480 | EXPORT_SYMBOL(fc_get_event_number); | |
481 | ||
482 | ||
483 | /** | |
484 | * fc_host_post_event - called to post an even on an fc_host. | |
84314fd4 JS |
485 | * @shost: host the event occurred on |
486 | * @event_number: fc event number obtained from get_fc_event_number() | |
487 | * @event_code: fc_host event being posted | |
488 | * @event_data: 32bits of data for the event being posted | |
489 | * | |
490 | * Notes: | |
491 | * This routine assumes no locks are held on entry. | |
eb44820c | 492 | */ |
84314fd4 JS |
493 | void |
494 | fc_host_post_event(struct Scsi_Host *shost, u32 event_number, | |
495 | enum fc_host_event_code event_code, u32 event_data) | |
496 | { | |
497 | struct sk_buff *skb; | |
498 | struct nlmsghdr *nlh; | |
499 | struct fc_nl_event *event; | |
500 | const char *name; | |
501 | u32 len, skblen; | |
502 | int err; | |
503 | ||
504 | if (!scsi_nl_sock) { | |
505 | err = -ENOENT; | |
506 | goto send_fail; | |
507 | } | |
508 | ||
509 | len = FC_NL_MSGALIGN(sizeof(*event)); | |
510 | skblen = NLMSG_SPACE(len); | |
511 | ||
512 | skb = alloc_skb(skblen, GFP_KERNEL); | |
513 | if (!skb) { | |
514 | err = -ENOBUFS; | |
515 | goto send_fail; | |
516 | } | |
517 | ||
518 | nlh = nlmsg_put(skb, 0, 0, SCSI_TRANSPORT_MSG, | |
519 | skblen - sizeof(*nlh), 0); | |
520 | if (!nlh) { | |
521 | err = -ENOBUFS; | |
522 | goto send_fail_skb; | |
523 | } | |
524 | event = NLMSG_DATA(nlh); | |
525 | ||
526 | INIT_SCSI_NL_HDR(&event->snlh, SCSI_NL_TRANSPORT_FC, | |
527 | FC_NL_ASYNC_EVENT, len); | |
528 | event->seconds = get_seconds(); | |
529 | event->vendor_id = 0; | |
530 | event->host_no = shost->host_no; | |
531 | event->event_datalen = sizeof(u32); /* bytes */ | |
532 | event->event_num = event_number; | |
533 | event->event_code = event_code; | |
534 | event->event_data = event_data; | |
535 | ||
ff491a73 PNA |
536 | nlmsg_multicast(scsi_nl_sock, skb, 0, SCSI_NL_GRP_FC_EVENTS, |
537 | GFP_KERNEL); | |
84314fd4 JS |
538 | return; |
539 | ||
540 | send_fail_skb: | |
541 | kfree_skb(skb); | |
542 | send_fail: | |
543 | name = get_fc_host_event_code_name(event_code); | |
544 | printk(KERN_WARNING | |
545 | "%s: Dropped Event : host %d %s data 0x%08x - err %d\n", | |
cadbd4a5 | 546 | __func__, shost->host_no, |
84314fd4 JS |
547 | (name) ? name : "<unknown>", event_data, err); |
548 | return; | |
549 | } | |
550 | EXPORT_SYMBOL(fc_host_post_event); | |
551 | ||
552 | ||
553 | /** | |
eb44820c | 554 | * fc_host_post_vendor_event - called to post a vendor unique event on an fc_host |
84314fd4 JS |
555 | * @shost: host the event occurred on |
556 | * @event_number: fc event number obtained from get_fc_event_number() | |
557 | * @data_len: amount, in bytes, of vendor unique data | |
558 | * @data_buf: pointer to vendor unique data | |
eb44820c | 559 | * @vendor_id: Vendor id |
84314fd4 JS |
560 | * |
561 | * Notes: | |
562 | * This routine assumes no locks are held on entry. | |
eb44820c | 563 | */ |
84314fd4 JS |
564 | void |
565 | fc_host_post_vendor_event(struct Scsi_Host *shost, u32 event_number, | |
f14e2e29 | 566 | u32 data_len, char * data_buf, u64 vendor_id) |
84314fd4 JS |
567 | { |
568 | struct sk_buff *skb; | |
569 | struct nlmsghdr *nlh; | |
570 | struct fc_nl_event *event; | |
571 | u32 len, skblen; | |
572 | int err; | |
573 | ||
574 | if (!scsi_nl_sock) { | |
575 | err = -ENOENT; | |
576 | goto send_vendor_fail; | |
577 | } | |
578 | ||
579 | len = FC_NL_MSGALIGN(sizeof(*event) + data_len); | |
580 | skblen = NLMSG_SPACE(len); | |
581 | ||
582 | skb = alloc_skb(skblen, GFP_KERNEL); | |
583 | if (!skb) { | |
584 | err = -ENOBUFS; | |
585 | goto send_vendor_fail; | |
586 | } | |
587 | ||
588 | nlh = nlmsg_put(skb, 0, 0, SCSI_TRANSPORT_MSG, | |
589 | skblen - sizeof(*nlh), 0); | |
590 | if (!nlh) { | |
591 | err = -ENOBUFS; | |
592 | goto send_vendor_fail_skb; | |
593 | } | |
594 | event = NLMSG_DATA(nlh); | |
595 | ||
596 | INIT_SCSI_NL_HDR(&event->snlh, SCSI_NL_TRANSPORT_FC, | |
597 | FC_NL_ASYNC_EVENT, len); | |
598 | event->seconds = get_seconds(); | |
599 | event->vendor_id = vendor_id; | |
600 | event->host_no = shost->host_no; | |
601 | event->event_datalen = data_len; /* bytes */ | |
602 | event->event_num = event_number; | |
603 | event->event_code = FCH_EVT_VENDOR_UNIQUE; | |
604 | memcpy(&event->event_data, data_buf, data_len); | |
605 | ||
ff491a73 PNA |
606 | nlmsg_multicast(scsi_nl_sock, skb, 0, SCSI_NL_GRP_FC_EVENTS, |
607 | GFP_KERNEL); | |
84314fd4 JS |
608 | return; |
609 | ||
610 | send_vendor_fail_skb: | |
611 | kfree_skb(skb); | |
612 | send_vendor_fail: | |
613 | printk(KERN_WARNING | |
614 | "%s: Dropped Event : host %d vendor_unique - err %d\n", | |
cadbd4a5 | 615 | __func__, shost->host_no, err); |
84314fd4 JS |
616 | return; |
617 | } | |
618 | EXPORT_SYMBOL(fc_host_post_vendor_event); | |
619 | ||
620 | ||
1da177e4 LT |
621 | |
622 | static __init int fc_transport_init(void) | |
623 | { | |
84314fd4 JS |
624 | int error; |
625 | ||
626 | atomic_set(&fc_event_seq, 0); | |
627 | ||
628 | error = transport_class_register(&fc_host_class); | |
a53eb5e0 JS |
629 | if (error) |
630 | return error; | |
631 | error = transport_class_register(&fc_vport_class); | |
1da177e4 LT |
632 | if (error) |
633 | return error; | |
634 | error = transport_class_register(&fc_rport_class); | |
635 | if (error) | |
636 | return error; | |
637 | return transport_class_register(&fc_transport_class); | |
638 | } | |
639 | ||
640 | static void __exit fc_transport_exit(void) | |
641 | { | |
642 | transport_class_unregister(&fc_transport_class); | |
643 | transport_class_unregister(&fc_rport_class); | |
644 | transport_class_unregister(&fc_host_class); | |
a53eb5e0 | 645 | transport_class_unregister(&fc_vport_class); |
1da177e4 LT |
646 | } |
647 | ||
648 | /* | |
649 | * FC Remote Port Attribute Management | |
650 | */ | |
651 | ||
652 | #define fc_rport_show_function(field, format_string, sz, cast) \ | |
653 | static ssize_t \ | |
ee959b00 TJ |
654 | show_fc_rport_##field (struct device *dev, \ |
655 | struct device_attribute *attr, char *buf) \ | |
1da177e4 | 656 | { \ |
ee959b00 | 657 | struct fc_rport *rport = transport_class_to_rport(dev); \ |
1da177e4 LT |
658 | struct Scsi_Host *shost = rport_to_shost(rport); \ |
659 | struct fc_internal *i = to_fc_internal(shost->transportt); \ | |
19a7b4ae JSEC |
660 | if ((i->f->get_rport_##field) && \ |
661 | !((rport->port_state == FC_PORTSTATE_BLOCKED) || \ | |
42e33148 | 662 | (rport->port_state == FC_PORTSTATE_DELETED) || \ |
19a7b4ae | 663 | (rport->port_state == FC_PORTSTATE_NOTPRESENT))) \ |
1da177e4 LT |
664 | i->f->get_rport_##field(rport); \ |
665 | return snprintf(buf, sz, format_string, cast rport->field); \ | |
666 | } | |
667 | ||
668 | #define fc_rport_store_function(field) \ | |
669 | static ssize_t \ | |
ee959b00 TJ |
670 | store_fc_rport_##field(struct device *dev, \ |
671 | struct device_attribute *attr, \ | |
672 | const char *buf, size_t count) \ | |
1da177e4 LT |
673 | { \ |
674 | int val; \ | |
ee959b00 | 675 | struct fc_rport *rport = transport_class_to_rport(dev); \ |
1da177e4 LT |
676 | struct Scsi_Host *shost = rport_to_shost(rport); \ |
677 | struct fc_internal *i = to_fc_internal(shost->transportt); \ | |
0f29b966 | 678 | char *cp; \ |
19a7b4ae | 679 | if ((rport->port_state == FC_PORTSTATE_BLOCKED) || \ |
42e33148 | 680 | (rport->port_state == FC_PORTSTATE_DELETED) || \ |
19a7b4ae JSEC |
681 | (rport->port_state == FC_PORTSTATE_NOTPRESENT)) \ |
682 | return -EBUSY; \ | |
0f29b966 JS |
683 | val = simple_strtoul(buf, &cp, 0); \ |
684 | if (*cp && (*cp != '\n')) \ | |
685 | return -EINVAL; \ | |
1da177e4 LT |
686 | i->f->set_rport_##field(rport, val); \ |
687 | return count; \ | |
688 | } | |
689 | ||
690 | #define fc_rport_rd_attr(field, format_string, sz) \ | |
691 | fc_rport_show_function(field, format_string, sz, ) \ | |
ee959b00 | 692 | static FC_DEVICE_ATTR(rport, field, S_IRUGO, \ |
1da177e4 LT |
693 | show_fc_rport_##field, NULL) |
694 | ||
695 | #define fc_rport_rd_attr_cast(field, format_string, sz, cast) \ | |
696 | fc_rport_show_function(field, format_string, sz, (cast)) \ | |
ee959b00 | 697 | static FC_DEVICE_ATTR(rport, field, S_IRUGO, \ |
1da177e4 LT |
698 | show_fc_rport_##field, NULL) |
699 | ||
700 | #define fc_rport_rw_attr(field, format_string, sz) \ | |
701 | fc_rport_show_function(field, format_string, sz, ) \ | |
702 | fc_rport_store_function(field) \ | |
ee959b00 | 703 | static FC_DEVICE_ATTR(rport, field, S_IRUGO | S_IWUSR, \ |
1da177e4 LT |
704 | show_fc_rport_##field, \ |
705 | store_fc_rport_##field) | |
706 | ||
707 | ||
708 | #define fc_private_rport_show_function(field, format_string, sz, cast) \ | |
709 | static ssize_t \ | |
ee959b00 TJ |
710 | show_fc_rport_##field (struct device *dev, \ |
711 | struct device_attribute *attr, char *buf) \ | |
1da177e4 | 712 | { \ |
ee959b00 | 713 | struct fc_rport *rport = transport_class_to_rport(dev); \ |
1da177e4 LT |
714 | return snprintf(buf, sz, format_string, cast rport->field); \ |
715 | } | |
716 | ||
717 | #define fc_private_rport_rd_attr(field, format_string, sz) \ | |
718 | fc_private_rport_show_function(field, format_string, sz, ) \ | |
ee959b00 | 719 | static FC_DEVICE_ATTR(rport, field, S_IRUGO, \ |
1da177e4 LT |
720 | show_fc_rport_##field, NULL) |
721 | ||
722 | #define fc_private_rport_rd_attr_cast(field, format_string, sz, cast) \ | |
723 | fc_private_rport_show_function(field, format_string, sz, (cast)) \ | |
ee959b00 | 724 | static FC_DEVICE_ATTR(rport, field, S_IRUGO, \ |
1da177e4 LT |
725 | show_fc_rport_##field, NULL) |
726 | ||
727 | ||
728 | #define fc_private_rport_rd_enum_attr(title, maxlen) \ | |
729 | static ssize_t \ | |
ee959b00 TJ |
730 | show_fc_rport_##title (struct device *dev, \ |
731 | struct device_attribute *attr, char *buf) \ | |
1da177e4 | 732 | { \ |
ee959b00 | 733 | struct fc_rport *rport = transport_class_to_rport(dev); \ |
1da177e4 LT |
734 | const char *name; \ |
735 | name = get_fc_##title##_name(rport->title); \ | |
736 | if (!name) \ | |
737 | return -EINVAL; \ | |
738 | return snprintf(buf, maxlen, "%s\n", name); \ | |
739 | } \ | |
ee959b00 | 740 | static FC_DEVICE_ATTR(rport, title, S_IRUGO, \ |
1da177e4 LT |
741 | show_fc_rport_##title, NULL) |
742 | ||
743 | ||
744 | #define SETUP_RPORT_ATTRIBUTE_RD(field) \ | |
ee959b00 | 745 | i->private_rport_attrs[count] = device_attr_rport_##field; \ |
1da177e4 LT |
746 | i->private_rport_attrs[count].attr.mode = S_IRUGO; \ |
747 | i->private_rport_attrs[count].store = NULL; \ | |
748 | i->rport_attrs[count] = &i->private_rport_attrs[count]; \ | |
749 | if (i->f->show_rport_##field) \ | |
750 | count++ | |
751 | ||
752 | #define SETUP_PRIVATE_RPORT_ATTRIBUTE_RD(field) \ | |
ee959b00 | 753 | i->private_rport_attrs[count] = device_attr_rport_##field; \ |
1da177e4 LT |
754 | i->private_rport_attrs[count].attr.mode = S_IRUGO; \ |
755 | i->private_rport_attrs[count].store = NULL; \ | |
756 | i->rport_attrs[count] = &i->private_rport_attrs[count]; \ | |
757 | count++ | |
758 | ||
759 | #define SETUP_RPORT_ATTRIBUTE_RW(field) \ | |
ee959b00 | 760 | i->private_rport_attrs[count] = device_attr_rport_##field; \ |
1da177e4 LT |
761 | if (!i->f->set_rport_##field) { \ |
762 | i->private_rport_attrs[count].attr.mode = S_IRUGO; \ | |
763 | i->private_rport_attrs[count].store = NULL; \ | |
764 | } \ | |
765 | i->rport_attrs[count] = &i->private_rport_attrs[count]; \ | |
766 | if (i->f->show_rport_##field) \ | |
767 | count++ | |
768 | ||
0f29b966 JS |
769 | #define SETUP_PRIVATE_RPORT_ATTRIBUTE_RW(field) \ |
770 | { \ | |
ee959b00 | 771 | i->private_rport_attrs[count] = device_attr_rport_##field; \ |
0f29b966 JS |
772 | i->rport_attrs[count] = &i->private_rport_attrs[count]; \ |
773 | count++; \ | |
774 | } | |
775 | ||
1da177e4 LT |
776 | |
777 | /* The FC Transport Remote Port Attributes: */ | |
778 | ||
779 | /* Fixed Remote Port Attributes */ | |
780 | ||
781 | fc_private_rport_rd_attr(maxframe_size, "%u bytes\n", 20); | |
782 | ||
783 | static ssize_t | |
ee959b00 TJ |
784 | show_fc_rport_supported_classes (struct device *dev, |
785 | struct device_attribute *attr, char *buf) | |
1da177e4 | 786 | { |
ee959b00 | 787 | struct fc_rport *rport = transport_class_to_rport(dev); |
1da177e4 LT |
788 | if (rport->supported_classes == FC_COS_UNSPECIFIED) |
789 | return snprintf(buf, 20, "unspecified\n"); | |
790 | return get_fc_cos_names(rport->supported_classes, buf); | |
791 | } | |
ee959b00 | 792 | static FC_DEVICE_ATTR(rport, supported_classes, S_IRUGO, |
1da177e4 LT |
793 | show_fc_rport_supported_classes, NULL); |
794 | ||
795 | /* Dynamic Remote Port Attributes */ | |
796 | ||
19a7b4ae JSEC |
797 | /* |
798 | * dev_loss_tmo attribute | |
799 | */ | |
800 | fc_rport_show_function(dev_loss_tmo, "%d\n", 20, ) | |
801 | static ssize_t | |
ee959b00 TJ |
802 | store_fc_rport_dev_loss_tmo(struct device *dev, struct device_attribute *attr, |
803 | const char *buf, size_t count) | |
19a7b4ae JSEC |
804 | { |
805 | int val; | |
ee959b00 | 806 | struct fc_rport *rport = transport_class_to_rport(dev); |
19a7b4ae JSEC |
807 | struct Scsi_Host *shost = rport_to_shost(rport); |
808 | struct fc_internal *i = to_fc_internal(shost->transportt); | |
0f29b966 | 809 | char *cp; |
19a7b4ae | 810 | if ((rport->port_state == FC_PORTSTATE_BLOCKED) || |
42e33148 | 811 | (rport->port_state == FC_PORTSTATE_DELETED) || |
19a7b4ae JSEC |
812 | (rport->port_state == FC_PORTSTATE_NOTPRESENT)) |
813 | return -EBUSY; | |
0f29b966 JS |
814 | val = simple_strtoul(buf, &cp, 0); |
815 | if ((*cp && (*cp != '\n')) || | |
816 | (val < 0) || (val > SCSI_DEVICE_BLOCK_MAX_TIMEOUT)) | |
19a7b4ae JSEC |
817 | return -EINVAL; |
818 | i->f->set_rport_dev_loss_tmo(rport, val); | |
819 | return count; | |
820 | } | |
ee959b00 | 821 | static FC_DEVICE_ATTR(rport, dev_loss_tmo, S_IRUGO | S_IWUSR, |
19a7b4ae | 822 | show_fc_rport_dev_loss_tmo, store_fc_rport_dev_loss_tmo); |
1da177e4 LT |
823 | |
824 | ||
825 | /* Private Remote Port Attributes */ | |
826 | ||
827 | fc_private_rport_rd_attr_cast(node_name, "0x%llx\n", 20, unsigned long long); | |
828 | fc_private_rport_rd_attr_cast(port_name, "0x%llx\n", 20, unsigned long long); | |
829 | fc_private_rport_rd_attr(port_id, "0x%06x\n", 20); | |
830 | ||
831 | static ssize_t | |
ee959b00 TJ |
832 | show_fc_rport_roles (struct device *dev, struct device_attribute *attr, |
833 | char *buf) | |
1da177e4 | 834 | { |
ee959b00 | 835 | struct fc_rport *rport = transport_class_to_rport(dev); |
1da177e4 LT |
836 | |
837 | /* identify any roles that are port_id specific */ | |
838 | if ((rport->port_id != -1) && | |
839 | (rport->port_id & FC_WELLKNOWN_PORTID_MASK) == | |
840 | FC_WELLKNOWN_PORTID_MASK) { | |
841 | switch (rport->port_id & FC_WELLKNOWN_ROLE_MASK) { | |
842 | case FC_FPORT_PORTID: | |
843 | return snprintf(buf, 30, "Fabric Port\n"); | |
844 | case FC_FABCTLR_PORTID: | |
845 | return snprintf(buf, 30, "Fabric Controller\n"); | |
846 | case FC_DIRSRVR_PORTID: | |
847 | return snprintf(buf, 30, "Directory Server\n"); | |
848 | case FC_TIMESRVR_PORTID: | |
849 | return snprintf(buf, 30, "Time Server\n"); | |
850 | case FC_MGMTSRVR_PORTID: | |
851 | return snprintf(buf, 30, "Management Server\n"); | |
852 | default: | |
853 | return snprintf(buf, 30, "Unknown Fabric Entity\n"); | |
854 | } | |
855 | } else { | |
a53eb5e0 | 856 | if (rport->roles == FC_PORT_ROLE_UNKNOWN) |
1da177e4 | 857 | return snprintf(buf, 20, "unknown\n"); |
a53eb5e0 | 858 | return get_fc_port_roles_names(rport->roles, buf); |
1da177e4 LT |
859 | } |
860 | } | |
ee959b00 | 861 | static FC_DEVICE_ATTR(rport, roles, S_IRUGO, |
1da177e4 LT |
862 | show_fc_rport_roles, NULL); |
863 | ||
864 | fc_private_rport_rd_enum_attr(port_state, FC_PORTSTATE_MAX_NAMELEN); | |
865 | fc_private_rport_rd_attr(scsi_target_id, "%d\n", 20); | |
866 | ||
0f29b966 JS |
867 | /* |
868 | * fast_io_fail_tmo attribute | |
869 | */ | |
870 | static ssize_t | |
ee959b00 TJ |
871 | show_fc_rport_fast_io_fail_tmo (struct device *dev, |
872 | struct device_attribute *attr, char *buf) | |
0f29b966 | 873 | { |
ee959b00 | 874 | struct fc_rport *rport = transport_class_to_rport(dev); |
0f29b966 JS |
875 | |
876 | if (rport->fast_io_fail_tmo == -1) | |
877 | return snprintf(buf, 5, "off\n"); | |
878 | return snprintf(buf, 20, "%d\n", rport->fast_io_fail_tmo); | |
879 | } | |
880 | ||
881 | static ssize_t | |
ee959b00 TJ |
882 | store_fc_rport_fast_io_fail_tmo(struct device *dev, |
883 | struct device_attribute *attr, const char *buf, | |
884 | size_t count) | |
0f29b966 JS |
885 | { |
886 | int val; | |
887 | char *cp; | |
ee959b00 | 888 | struct fc_rport *rport = transport_class_to_rport(dev); |
0f29b966 JS |
889 | |
890 | if ((rport->port_state == FC_PORTSTATE_BLOCKED) || | |
891 | (rport->port_state == FC_PORTSTATE_DELETED) || | |
892 | (rport->port_state == FC_PORTSTATE_NOTPRESENT)) | |
893 | return -EBUSY; | |
894 | if (strncmp(buf, "off", 3) == 0) | |
895 | rport->fast_io_fail_tmo = -1; | |
896 | else { | |
897 | val = simple_strtoul(buf, &cp, 0); | |
898 | if ((*cp && (*cp != '\n')) || | |
899 | (val < 0) || (val >= rport->dev_loss_tmo)) | |
900 | return -EINVAL; | |
901 | rport->fast_io_fail_tmo = val; | |
902 | } | |
903 | return count; | |
904 | } | |
ee959b00 | 905 | static FC_DEVICE_ATTR(rport, fast_io_fail_tmo, S_IRUGO | S_IWUSR, |
0f29b966 | 906 | show_fc_rport_fast_io_fail_tmo, store_fc_rport_fast_io_fail_tmo); |
1da177e4 LT |
907 | |
908 | ||
909 | /* | |
910 | * FC SCSI Target Attribute Management | |
911 | */ | |
912 | ||
913 | /* | |
914 | * Note: in the target show function we recognize when the remote | |
a53eb5e0 | 915 | * port is in the heirarchy and do not allow the driver to get |
1da177e4 LT |
916 | * involved in sysfs functions. The driver only gets involved if |
917 | * it's the "old" style that doesn't use rports. | |
918 | */ | |
919 | #define fc_starget_show_function(field, format_string, sz, cast) \ | |
920 | static ssize_t \ | |
ee959b00 TJ |
921 | show_fc_starget_##field (struct device *dev, \ |
922 | struct device_attribute *attr, char *buf) \ | |
1da177e4 | 923 | { \ |
ee959b00 | 924 | struct scsi_target *starget = transport_class_to_starget(dev); \ |
1da177e4 LT |
925 | struct Scsi_Host *shost = dev_to_shost(starget->dev.parent); \ |
926 | struct fc_internal *i = to_fc_internal(shost->transportt); \ | |
927 | struct fc_rport *rport = starget_to_rport(starget); \ | |
928 | if (rport) \ | |
929 | fc_starget_##field(starget) = rport->field; \ | |
930 | else if (i->f->get_starget_##field) \ | |
931 | i->f->get_starget_##field(starget); \ | |
932 | return snprintf(buf, sz, format_string, \ | |
933 | cast fc_starget_##field(starget)); \ | |
934 | } | |
935 | ||
936 | #define fc_starget_rd_attr(field, format_string, sz) \ | |
937 | fc_starget_show_function(field, format_string, sz, ) \ | |
ee959b00 | 938 | static FC_DEVICE_ATTR(starget, field, S_IRUGO, \ |
1da177e4 LT |
939 | show_fc_starget_##field, NULL) |
940 | ||
941 | #define fc_starget_rd_attr_cast(field, format_string, sz, cast) \ | |
942 | fc_starget_show_function(field, format_string, sz, (cast)) \ | |
ee959b00 | 943 | static FC_DEVICE_ATTR(starget, field, S_IRUGO, \ |
1da177e4 LT |
944 | show_fc_starget_##field, NULL) |
945 | ||
946 | #define SETUP_STARGET_ATTRIBUTE_RD(field) \ | |
ee959b00 | 947 | i->private_starget_attrs[count] = device_attr_starget_##field; \ |
1da177e4 LT |
948 | i->private_starget_attrs[count].attr.mode = S_IRUGO; \ |
949 | i->private_starget_attrs[count].store = NULL; \ | |
950 | i->starget_attrs[count] = &i->private_starget_attrs[count]; \ | |
951 | if (i->f->show_starget_##field) \ | |
952 | count++ | |
953 | ||
954 | #define SETUP_STARGET_ATTRIBUTE_RW(field) \ | |
ee959b00 | 955 | i->private_starget_attrs[count] = device_attr_starget_##field; \ |
1da177e4 LT |
956 | if (!i->f->set_starget_##field) { \ |
957 | i->private_starget_attrs[count].attr.mode = S_IRUGO; \ | |
958 | i->private_starget_attrs[count].store = NULL; \ | |
959 | } \ | |
960 | i->starget_attrs[count] = &i->private_starget_attrs[count]; \ | |
961 | if (i->f->show_starget_##field) \ | |
962 | count++ | |
963 | ||
964 | /* The FC Transport SCSI Target Attributes: */ | |
965 | fc_starget_rd_attr_cast(node_name, "0x%llx\n", 20, unsigned long long); | |
966 | fc_starget_rd_attr_cast(port_name, "0x%llx\n", 20, unsigned long long); | |
967 | fc_starget_rd_attr(port_id, "0x%06x\n", 20); | |
968 | ||
969 | ||
a53eb5e0 JS |
970 | /* |
971 | * FC Virtual Port Attribute Management | |
972 | */ | |
973 | ||
974 | #define fc_vport_show_function(field, format_string, sz, cast) \ | |
975 | static ssize_t \ | |
ee959b00 TJ |
976 | show_fc_vport_##field (struct device *dev, \ |
977 | struct device_attribute *attr, char *buf) \ | |
a53eb5e0 | 978 | { \ |
ee959b00 | 979 | struct fc_vport *vport = transport_class_to_vport(dev); \ |
a53eb5e0 JS |
980 | struct Scsi_Host *shost = vport_to_shost(vport); \ |
981 | struct fc_internal *i = to_fc_internal(shost->transportt); \ | |
982 | if ((i->f->get_vport_##field) && \ | |
983 | !(vport->flags & (FC_VPORT_DEL | FC_VPORT_CREATING))) \ | |
984 | i->f->get_vport_##field(vport); \ | |
985 | return snprintf(buf, sz, format_string, cast vport->field); \ | |
986 | } | |
987 | ||
988 | #define fc_vport_store_function(field) \ | |
989 | static ssize_t \ | |
ee959b00 TJ |
990 | store_fc_vport_##field(struct device *dev, \ |
991 | struct device_attribute *attr, \ | |
992 | const char *buf, size_t count) \ | |
a53eb5e0 JS |
993 | { \ |
994 | int val; \ | |
ee959b00 | 995 | struct fc_vport *vport = transport_class_to_vport(dev); \ |
a53eb5e0 JS |
996 | struct Scsi_Host *shost = vport_to_shost(vport); \ |
997 | struct fc_internal *i = to_fc_internal(shost->transportt); \ | |
998 | char *cp; \ | |
999 | if (vport->flags & (FC_VPORT_DEL | FC_VPORT_CREATING)) \ | |
1000 | return -EBUSY; \ | |
1001 | val = simple_strtoul(buf, &cp, 0); \ | |
1002 | if (*cp && (*cp != '\n')) \ | |
1003 | return -EINVAL; \ | |
1004 | i->f->set_vport_##field(vport, val); \ | |
1005 | return count; \ | |
1006 | } | |
1007 | ||
1008 | #define fc_vport_store_str_function(field, slen) \ | |
1009 | static ssize_t \ | |
ee959b00 TJ |
1010 | store_fc_vport_##field(struct device *dev, \ |
1011 | struct device_attribute *attr, \ | |
1012 | const char *buf, size_t count) \ | |
a53eb5e0 | 1013 | { \ |
ee959b00 | 1014 | struct fc_vport *vport = transport_class_to_vport(dev); \ |
a53eb5e0 JS |
1015 | struct Scsi_Host *shost = vport_to_shost(vport); \ |
1016 | struct fc_internal *i = to_fc_internal(shost->transportt); \ | |
1017 | unsigned int cnt=count; \ | |
1018 | \ | |
1019 | /* count may include a LF at end of string */ \ | |
1020 | if (buf[cnt-1] == '\n') \ | |
1021 | cnt--; \ | |
1022 | if (cnt > ((slen) - 1)) \ | |
1023 | return -EINVAL; \ | |
1024 | memcpy(vport->field, buf, cnt); \ | |
1025 | i->f->set_vport_##field(vport); \ | |
1026 | return count; \ | |
1027 | } | |
1028 | ||
1029 | #define fc_vport_rd_attr(field, format_string, sz) \ | |
1030 | fc_vport_show_function(field, format_string, sz, ) \ | |
ee959b00 | 1031 | static FC_DEVICE_ATTR(vport, field, S_IRUGO, \ |
a53eb5e0 JS |
1032 | show_fc_vport_##field, NULL) |
1033 | ||
1034 | #define fc_vport_rd_attr_cast(field, format_string, sz, cast) \ | |
1035 | fc_vport_show_function(field, format_string, sz, (cast)) \ | |
ee959b00 | 1036 | static FC_DEVICE_ATTR(vport, field, S_IRUGO, \ |
a53eb5e0 JS |
1037 | show_fc_vport_##field, NULL) |
1038 | ||
1039 | #define fc_vport_rw_attr(field, format_string, sz) \ | |
1040 | fc_vport_show_function(field, format_string, sz, ) \ | |
1041 | fc_vport_store_function(field) \ | |
ee959b00 | 1042 | static FC_DEVICE_ATTR(vport, field, S_IRUGO | S_IWUSR, \ |
a53eb5e0 JS |
1043 | show_fc_vport_##field, \ |
1044 | store_fc_vport_##field) | |
1045 | ||
1046 | #define fc_private_vport_show_function(field, format_string, sz, cast) \ | |
1047 | static ssize_t \ | |
ee959b00 TJ |
1048 | show_fc_vport_##field (struct device *dev, \ |
1049 | struct device_attribute *attr, char *buf) \ | |
a53eb5e0 | 1050 | { \ |
ee959b00 | 1051 | struct fc_vport *vport = transport_class_to_vport(dev); \ |
a53eb5e0 JS |
1052 | return snprintf(buf, sz, format_string, cast vport->field); \ |
1053 | } | |
1054 | ||
1055 | #define fc_private_vport_store_u32_function(field) \ | |
1056 | static ssize_t \ | |
ee959b00 TJ |
1057 | store_fc_vport_##field(struct device *dev, \ |
1058 | struct device_attribute *attr, \ | |
1059 | const char *buf, size_t count) \ | |
a53eb5e0 JS |
1060 | { \ |
1061 | u32 val; \ | |
ee959b00 | 1062 | struct fc_vport *vport = transport_class_to_vport(dev); \ |
a53eb5e0 JS |
1063 | char *cp; \ |
1064 | if (vport->flags & (FC_VPORT_DEL | FC_VPORT_CREATING)) \ | |
1065 | return -EBUSY; \ | |
1066 | val = simple_strtoul(buf, &cp, 0); \ | |
1067 | if (*cp && (*cp != '\n')) \ | |
1068 | return -EINVAL; \ | |
1069 | vport->field = val; \ | |
1070 | return count; \ | |
1071 | } | |
1072 | ||
1073 | ||
1074 | #define fc_private_vport_rd_attr(field, format_string, sz) \ | |
1075 | fc_private_vport_show_function(field, format_string, sz, ) \ | |
ee959b00 | 1076 | static FC_DEVICE_ATTR(vport, field, S_IRUGO, \ |
a53eb5e0 JS |
1077 | show_fc_vport_##field, NULL) |
1078 | ||
1079 | #define fc_private_vport_rd_attr_cast(field, format_string, sz, cast) \ | |
1080 | fc_private_vport_show_function(field, format_string, sz, (cast)) \ | |
ee959b00 | 1081 | static FC_DEVICE_ATTR(vport, field, S_IRUGO, \ |
a53eb5e0 JS |
1082 | show_fc_vport_##field, NULL) |
1083 | ||
1084 | #define fc_private_vport_rw_u32_attr(field, format_string, sz) \ | |
1085 | fc_private_vport_show_function(field, format_string, sz, ) \ | |
1086 | fc_private_vport_store_u32_function(field) \ | |
ee959b00 | 1087 | static FC_DEVICE_ATTR(vport, field, S_IRUGO | S_IWUSR, \ |
a53eb5e0 JS |
1088 | show_fc_vport_##field, \ |
1089 | store_fc_vport_##field) | |
1090 | ||
1091 | ||
1092 | #define fc_private_vport_rd_enum_attr(title, maxlen) \ | |
1093 | static ssize_t \ | |
ee959b00 TJ |
1094 | show_fc_vport_##title (struct device *dev, \ |
1095 | struct device_attribute *attr, \ | |
1096 | char *buf) \ | |
a53eb5e0 | 1097 | { \ |
ee959b00 | 1098 | struct fc_vport *vport = transport_class_to_vport(dev); \ |
a53eb5e0 JS |
1099 | const char *name; \ |
1100 | name = get_fc_##title##_name(vport->title); \ | |
1101 | if (!name) \ | |
1102 | return -EINVAL; \ | |
1103 | return snprintf(buf, maxlen, "%s\n", name); \ | |
1104 | } \ | |
ee959b00 | 1105 | static FC_DEVICE_ATTR(vport, title, S_IRUGO, \ |
a53eb5e0 JS |
1106 | show_fc_vport_##title, NULL) |
1107 | ||
1108 | ||
1109 | #define SETUP_VPORT_ATTRIBUTE_RD(field) \ | |
ee959b00 | 1110 | i->private_vport_attrs[count] = device_attr_vport_##field; \ |
a53eb5e0 JS |
1111 | i->private_vport_attrs[count].attr.mode = S_IRUGO; \ |
1112 | i->private_vport_attrs[count].store = NULL; \ | |
1113 | i->vport_attrs[count] = &i->private_vport_attrs[count]; \ | |
1114 | if (i->f->get_##field) \ | |
1115 | count++ | |
1116 | /* NOTE: Above MACRO differs: checks function not show bit */ | |
1117 | ||
1118 | #define SETUP_PRIVATE_VPORT_ATTRIBUTE_RD(field) \ | |
ee959b00 | 1119 | i->private_vport_attrs[count] = device_attr_vport_##field; \ |
a53eb5e0 JS |
1120 | i->private_vport_attrs[count].attr.mode = S_IRUGO; \ |
1121 | i->private_vport_attrs[count].store = NULL; \ | |
1122 | i->vport_attrs[count] = &i->private_vport_attrs[count]; \ | |
1123 | count++ | |
1124 | ||
1125 | #define SETUP_VPORT_ATTRIBUTE_WR(field) \ | |
ee959b00 | 1126 | i->private_vport_attrs[count] = device_attr_vport_##field; \ |
a53eb5e0 JS |
1127 | i->vport_attrs[count] = &i->private_vport_attrs[count]; \ |
1128 | if (i->f->field) \ | |
1129 | count++ | |
1130 | /* NOTE: Above MACRO differs: checks function */ | |
1131 | ||
1132 | #define SETUP_VPORT_ATTRIBUTE_RW(field) \ | |
ee959b00 | 1133 | i->private_vport_attrs[count] = device_attr_vport_##field; \ |
a53eb5e0 JS |
1134 | if (!i->f->set_vport_##field) { \ |
1135 | i->private_vport_attrs[count].attr.mode = S_IRUGO; \ | |
1136 | i->private_vport_attrs[count].store = NULL; \ | |
1137 | } \ | |
1138 | i->vport_attrs[count] = &i->private_vport_attrs[count]; \ | |
1139 | count++ | |
1140 | /* NOTE: Above MACRO differs: does not check show bit */ | |
1141 | ||
1142 | #define SETUP_PRIVATE_VPORT_ATTRIBUTE_RW(field) \ | |
1143 | { \ | |
ee959b00 | 1144 | i->private_vport_attrs[count] = device_attr_vport_##field; \ |
a53eb5e0 JS |
1145 | i->vport_attrs[count] = &i->private_vport_attrs[count]; \ |
1146 | count++; \ | |
1147 | } | |
1148 | ||
1149 | ||
1150 | /* The FC Transport Virtual Port Attributes: */ | |
1151 | ||
1152 | /* Fixed Virtual Port Attributes */ | |
1153 | ||
1154 | /* Dynamic Virtual Port Attributes */ | |
1155 | ||
1156 | /* Private Virtual Port Attributes */ | |
1157 | ||
1158 | fc_private_vport_rd_enum_attr(vport_state, FC_VPORTSTATE_MAX_NAMELEN); | |
1159 | fc_private_vport_rd_enum_attr(vport_last_state, FC_VPORTSTATE_MAX_NAMELEN); | |
1160 | fc_private_vport_rd_attr_cast(node_name, "0x%llx\n", 20, unsigned long long); | |
1161 | fc_private_vport_rd_attr_cast(port_name, "0x%llx\n", 20, unsigned long long); | |
1162 | ||
1163 | static ssize_t | |
ee959b00 TJ |
1164 | show_fc_vport_roles (struct device *dev, struct device_attribute *attr, |
1165 | char *buf) | |
a53eb5e0 | 1166 | { |
ee959b00 | 1167 | struct fc_vport *vport = transport_class_to_vport(dev); |
a53eb5e0 JS |
1168 | |
1169 | if (vport->roles == FC_PORT_ROLE_UNKNOWN) | |
1170 | return snprintf(buf, 20, "unknown\n"); | |
1171 | return get_fc_port_roles_names(vport->roles, buf); | |
1172 | } | |
ee959b00 | 1173 | static FC_DEVICE_ATTR(vport, roles, S_IRUGO, show_fc_vport_roles, NULL); |
a53eb5e0 JS |
1174 | |
1175 | fc_private_vport_rd_enum_attr(vport_type, FC_PORTTYPE_MAX_NAMELEN); | |
1176 | ||
1177 | fc_private_vport_show_function(symbolic_name, "%s\n", | |
1178 | FC_VPORT_SYMBOLIC_NAMELEN + 1, ) | |
1179 | fc_vport_store_str_function(symbolic_name, FC_VPORT_SYMBOLIC_NAMELEN) | |
ee959b00 | 1180 | static FC_DEVICE_ATTR(vport, symbolic_name, S_IRUGO | S_IWUSR, |
a53eb5e0 JS |
1181 | show_fc_vport_symbolic_name, store_fc_vport_symbolic_name); |
1182 | ||
1183 | static ssize_t | |
ee959b00 TJ |
1184 | store_fc_vport_delete(struct device *dev, struct device_attribute *attr, |
1185 | const char *buf, size_t count) | |
a53eb5e0 | 1186 | { |
ee959b00 | 1187 | struct fc_vport *vport = transport_class_to_vport(dev); |
9ef3e4a4 | 1188 | struct Scsi_Host *shost = vport_to_shost(vport); |
a53eb5e0 | 1189 | |
9ef3e4a4 | 1190 | fc_queue_work(shost, &vport->vport_delete_work); |
a53eb5e0 JS |
1191 | return count; |
1192 | } | |
ee959b00 | 1193 | static FC_DEVICE_ATTR(vport, vport_delete, S_IWUSR, |
a53eb5e0 JS |
1194 | NULL, store_fc_vport_delete); |
1195 | ||
1196 | ||
1197 | /* | |
1198 | * Enable/Disable vport | |
1199 | * Write "1" to disable, write "0" to enable | |
1200 | */ | |
1201 | static ssize_t | |
ee959b00 TJ |
1202 | store_fc_vport_disable(struct device *dev, struct device_attribute *attr, |
1203 | const char *buf, | |
a53eb5e0 JS |
1204 | size_t count) |
1205 | { | |
ee959b00 | 1206 | struct fc_vport *vport = transport_class_to_vport(dev); |
a53eb5e0 JS |
1207 | struct Scsi_Host *shost = vport_to_shost(vport); |
1208 | struct fc_internal *i = to_fc_internal(shost->transportt); | |
1209 | int stat; | |
1210 | ||
1211 | if (vport->flags & (FC_VPORT_DEL | FC_VPORT_CREATING)) | |
1212 | return -EBUSY; | |
1213 | ||
1214 | if (*buf == '0') { | |
1215 | if (vport->vport_state != FC_VPORT_DISABLED) | |
1216 | return -EALREADY; | |
1217 | } else if (*buf == '1') { | |
1218 | if (vport->vport_state == FC_VPORT_DISABLED) | |
1219 | return -EALREADY; | |
1220 | } else | |
1221 | return -EINVAL; | |
1222 | ||
1223 | stat = i->f->vport_disable(vport, ((*buf == '0') ? false : true)); | |
1224 | return stat ? stat : count; | |
1225 | } | |
ee959b00 | 1226 | static FC_DEVICE_ATTR(vport, vport_disable, S_IWUSR, |
a53eb5e0 JS |
1227 | NULL, store_fc_vport_disable); |
1228 | ||
1229 | ||
1da177e4 LT |
1230 | /* |
1231 | * Host Attribute Management | |
1232 | */ | |
1233 | ||
1234 | #define fc_host_show_function(field, format_string, sz, cast) \ | |
1235 | static ssize_t \ | |
ee959b00 TJ |
1236 | show_fc_host_##field (struct device *dev, \ |
1237 | struct device_attribute *attr, char *buf) \ | |
1da177e4 | 1238 | { \ |
ee959b00 | 1239 | struct Scsi_Host *shost = transport_class_to_shost(dev); \ |
1da177e4 LT |
1240 | struct fc_internal *i = to_fc_internal(shost->transportt); \ |
1241 | if (i->f->get_host_##field) \ | |
1242 | i->f->get_host_##field(shost); \ | |
1243 | return snprintf(buf, sz, format_string, cast fc_host_##field(shost)); \ | |
1244 | } | |
1245 | ||
1246 | #define fc_host_store_function(field) \ | |
1247 | static ssize_t \ | |
ee959b00 TJ |
1248 | store_fc_host_##field(struct device *dev, \ |
1249 | struct device_attribute *attr, \ | |
1250 | const char *buf, size_t count) \ | |
1da177e4 LT |
1251 | { \ |
1252 | int val; \ | |
ee959b00 | 1253 | struct Scsi_Host *shost = transport_class_to_shost(dev); \ |
1da177e4 | 1254 | struct fc_internal *i = to_fc_internal(shost->transportt); \ |
0f29b966 | 1255 | char *cp; \ |
1da177e4 | 1256 | \ |
0f29b966 JS |
1257 | val = simple_strtoul(buf, &cp, 0); \ |
1258 | if (*cp && (*cp != '\n')) \ | |
1259 | return -EINVAL; \ | |
1da177e4 LT |
1260 | i->f->set_host_##field(shost, val); \ |
1261 | return count; \ | |
1262 | } | |
1263 | ||
b8d08210 JS |
1264 | #define fc_host_store_str_function(field, slen) \ |
1265 | static ssize_t \ | |
ee959b00 TJ |
1266 | store_fc_host_##field(struct device *dev, \ |
1267 | struct device_attribute *attr, \ | |
1268 | const char *buf, size_t count) \ | |
b8d08210 | 1269 | { \ |
ee959b00 | 1270 | struct Scsi_Host *shost = transport_class_to_shost(dev); \ |
b8d08210 JS |
1271 | struct fc_internal *i = to_fc_internal(shost->transportt); \ |
1272 | unsigned int cnt=count; \ | |
1273 | \ | |
1274 | /* count may include a LF at end of string */ \ | |
1275 | if (buf[cnt-1] == '\n') \ | |
1276 | cnt--; \ | |
1277 | if (cnt > ((slen) - 1)) \ | |
1278 | return -EINVAL; \ | |
1279 | memcpy(fc_host_##field(shost), buf, cnt); \ | |
1280 | i->f->set_host_##field(shost); \ | |
1281 | return count; \ | |
1282 | } | |
1283 | ||
1da177e4 LT |
1284 | #define fc_host_rd_attr(field, format_string, sz) \ |
1285 | fc_host_show_function(field, format_string, sz, ) \ | |
ee959b00 | 1286 | static FC_DEVICE_ATTR(host, field, S_IRUGO, \ |
1da177e4 LT |
1287 | show_fc_host_##field, NULL) |
1288 | ||
1289 | #define fc_host_rd_attr_cast(field, format_string, sz, cast) \ | |
1290 | fc_host_show_function(field, format_string, sz, (cast)) \ | |
ee959b00 | 1291 | static FC_DEVICE_ATTR(host, field, S_IRUGO, \ |
1da177e4 LT |
1292 | show_fc_host_##field, NULL) |
1293 | ||
1294 | #define fc_host_rw_attr(field, format_string, sz) \ | |
1295 | fc_host_show_function(field, format_string, sz, ) \ | |
1296 | fc_host_store_function(field) \ | |
ee959b00 | 1297 | static FC_DEVICE_ATTR(host, field, S_IRUGO | S_IWUSR, \ |
1da177e4 LT |
1298 | show_fc_host_##field, \ |
1299 | store_fc_host_##field) | |
1300 | ||
1301 | #define fc_host_rd_enum_attr(title, maxlen) \ | |
1302 | static ssize_t \ | |
ee959b00 TJ |
1303 | show_fc_host_##title (struct device *dev, \ |
1304 | struct device_attribute *attr, char *buf) \ | |
1da177e4 | 1305 | { \ |
ee959b00 | 1306 | struct Scsi_Host *shost = transport_class_to_shost(dev); \ |
1da177e4 LT |
1307 | struct fc_internal *i = to_fc_internal(shost->transportt); \ |
1308 | const char *name; \ | |
1309 | if (i->f->get_host_##title) \ | |
1310 | i->f->get_host_##title(shost); \ | |
1311 | name = get_fc_##title##_name(fc_host_##title(shost)); \ | |
1312 | if (!name) \ | |
1313 | return -EINVAL; \ | |
1314 | return snprintf(buf, maxlen, "%s\n", name); \ | |
1315 | } \ | |
ee959b00 | 1316 | static FC_DEVICE_ATTR(host, title, S_IRUGO, show_fc_host_##title, NULL) |
1da177e4 LT |
1317 | |
1318 | #define SETUP_HOST_ATTRIBUTE_RD(field) \ | |
ee959b00 | 1319 | i->private_host_attrs[count] = device_attr_host_##field; \ |
1da177e4 LT |
1320 | i->private_host_attrs[count].attr.mode = S_IRUGO; \ |
1321 | i->private_host_attrs[count].store = NULL; \ | |
1322 | i->host_attrs[count] = &i->private_host_attrs[count]; \ | |
1323 | if (i->f->show_host_##field) \ | |
1324 | count++ | |
1325 | ||
a53eb5e0 | 1326 | #define SETUP_HOST_ATTRIBUTE_RD_NS(field) \ |
ee959b00 | 1327 | i->private_host_attrs[count] = device_attr_host_##field; \ |
a53eb5e0 JS |
1328 | i->private_host_attrs[count].attr.mode = S_IRUGO; \ |
1329 | i->private_host_attrs[count].store = NULL; \ | |
1330 | i->host_attrs[count] = &i->private_host_attrs[count]; \ | |
1331 | count++ | |
1332 | ||
1da177e4 | 1333 | #define SETUP_HOST_ATTRIBUTE_RW(field) \ |
ee959b00 | 1334 | i->private_host_attrs[count] = device_attr_host_##field; \ |
1da177e4 LT |
1335 | if (!i->f->set_host_##field) { \ |
1336 | i->private_host_attrs[count].attr.mode = S_IRUGO; \ | |
1337 | i->private_host_attrs[count].store = NULL; \ | |
1338 | } \ | |
1339 | i->host_attrs[count] = &i->private_host_attrs[count]; \ | |
1340 | if (i->f->show_host_##field) \ | |
1341 | count++ | |
1342 | ||
1343 | ||
1344 | #define fc_private_host_show_function(field, format_string, sz, cast) \ | |
1345 | static ssize_t \ | |
ee959b00 TJ |
1346 | show_fc_host_##field (struct device *dev, \ |
1347 | struct device_attribute *attr, char *buf) \ | |
1da177e4 | 1348 | { \ |
ee959b00 | 1349 | struct Scsi_Host *shost = transport_class_to_shost(dev); \ |
1da177e4 LT |
1350 | return snprintf(buf, sz, format_string, cast fc_host_##field(shost)); \ |
1351 | } | |
1352 | ||
1353 | #define fc_private_host_rd_attr(field, format_string, sz) \ | |
1354 | fc_private_host_show_function(field, format_string, sz, ) \ | |
ee959b00 | 1355 | static FC_DEVICE_ATTR(host, field, S_IRUGO, \ |
1da177e4 LT |
1356 | show_fc_host_##field, NULL) |
1357 | ||
1358 | #define fc_private_host_rd_attr_cast(field, format_string, sz, cast) \ | |
1359 | fc_private_host_show_function(field, format_string, sz, (cast)) \ | |
ee959b00 | 1360 | static FC_DEVICE_ATTR(host, field, S_IRUGO, \ |
1da177e4 LT |
1361 | show_fc_host_##field, NULL) |
1362 | ||
1363 | #define SETUP_PRIVATE_HOST_ATTRIBUTE_RD(field) \ | |
ee959b00 | 1364 | i->private_host_attrs[count] = device_attr_host_##field; \ |
1da177e4 LT |
1365 | i->private_host_attrs[count].attr.mode = S_IRUGO; \ |
1366 | i->private_host_attrs[count].store = NULL; \ | |
1367 | i->host_attrs[count] = &i->private_host_attrs[count]; \ | |
1368 | count++ | |
1369 | ||
1370 | #define SETUP_PRIVATE_HOST_ATTRIBUTE_RW(field) \ | |
91ca7b01 | 1371 | { \ |
ee959b00 | 1372 | i->private_host_attrs[count] = device_attr_host_##field; \ |
1da177e4 | 1373 | i->host_attrs[count] = &i->private_host_attrs[count]; \ |
91ca7b01 AV |
1374 | count++; \ |
1375 | } | |
1da177e4 LT |
1376 | |
1377 | ||
1378 | /* Fixed Host Attributes */ | |
1379 | ||
1380 | static ssize_t | |
ee959b00 TJ |
1381 | show_fc_host_supported_classes (struct device *dev, |
1382 | struct device_attribute *attr, char *buf) | |
1da177e4 | 1383 | { |
ee959b00 | 1384 | struct Scsi_Host *shost = transport_class_to_shost(dev); |
1da177e4 LT |
1385 | |
1386 | if (fc_host_supported_classes(shost) == FC_COS_UNSPECIFIED) | |
1387 | return snprintf(buf, 20, "unspecified\n"); | |
1388 | ||
1389 | return get_fc_cos_names(fc_host_supported_classes(shost), buf); | |
1390 | } | |
ee959b00 | 1391 | static FC_DEVICE_ATTR(host, supported_classes, S_IRUGO, |
1da177e4 LT |
1392 | show_fc_host_supported_classes, NULL); |
1393 | ||
1394 | static ssize_t | |
ee959b00 TJ |
1395 | show_fc_host_supported_fc4s (struct device *dev, |
1396 | struct device_attribute *attr, char *buf) | |
1da177e4 | 1397 | { |
ee959b00 | 1398 | struct Scsi_Host *shost = transport_class_to_shost(dev); |
1da177e4 LT |
1399 | return (ssize_t)show_fc_fc4s(buf, fc_host_supported_fc4s(shost)); |
1400 | } | |
ee959b00 | 1401 | static FC_DEVICE_ATTR(host, supported_fc4s, S_IRUGO, |
1da177e4 LT |
1402 | show_fc_host_supported_fc4s, NULL); |
1403 | ||
1404 | static ssize_t | |
ee959b00 TJ |
1405 | show_fc_host_supported_speeds (struct device *dev, |
1406 | struct device_attribute *attr, char *buf) | |
1da177e4 | 1407 | { |
ee959b00 | 1408 | struct Scsi_Host *shost = transport_class_to_shost(dev); |
1da177e4 LT |
1409 | |
1410 | if (fc_host_supported_speeds(shost) == FC_PORTSPEED_UNKNOWN) | |
1411 | return snprintf(buf, 20, "unknown\n"); | |
1412 | ||
1413 | return get_fc_port_speed_names(fc_host_supported_speeds(shost), buf); | |
1414 | } | |
ee959b00 | 1415 | static FC_DEVICE_ATTR(host, supported_speeds, S_IRUGO, |
1da177e4 LT |
1416 | show_fc_host_supported_speeds, NULL); |
1417 | ||
1418 | ||
1419 | fc_private_host_rd_attr_cast(node_name, "0x%llx\n", 20, unsigned long long); | |
1420 | fc_private_host_rd_attr_cast(port_name, "0x%llx\n", 20, unsigned long long); | |
6b7281d0 AH |
1421 | fc_private_host_rd_attr_cast(permanent_port_name, "0x%llx\n", 20, |
1422 | unsigned long long); | |
1da177e4 | 1423 | fc_private_host_rd_attr(maxframe_size, "%u bytes\n", 20); |
a53eb5e0 | 1424 | fc_private_host_rd_attr(max_npiv_vports, "%u\n", 20); |
1da177e4 LT |
1425 | fc_private_host_rd_attr(serial_number, "%s\n", (FC_SERIAL_NUMBER_SIZE +1)); |
1426 | ||
1427 | ||
1428 | /* Dynamic Host Attributes */ | |
1429 | ||
1430 | static ssize_t | |
ee959b00 TJ |
1431 | show_fc_host_active_fc4s (struct device *dev, |
1432 | struct device_attribute *attr, char *buf) | |
1da177e4 | 1433 | { |
ee959b00 | 1434 | struct Scsi_Host *shost = transport_class_to_shost(dev); |
1da177e4 LT |
1435 | struct fc_internal *i = to_fc_internal(shost->transportt); |
1436 | ||
1437 | if (i->f->get_host_active_fc4s) | |
1438 | i->f->get_host_active_fc4s(shost); | |
1439 | ||
1440 | return (ssize_t)show_fc_fc4s(buf, fc_host_active_fc4s(shost)); | |
1441 | } | |
ee959b00 | 1442 | static FC_DEVICE_ATTR(host, active_fc4s, S_IRUGO, |
1da177e4 LT |
1443 | show_fc_host_active_fc4s, NULL); |
1444 | ||
1445 | static ssize_t | |
ee959b00 TJ |
1446 | show_fc_host_speed (struct device *dev, |
1447 | struct device_attribute *attr, char *buf) | |
1da177e4 | 1448 | { |
ee959b00 | 1449 | struct Scsi_Host *shost = transport_class_to_shost(dev); |
1da177e4 LT |
1450 | struct fc_internal *i = to_fc_internal(shost->transportt); |
1451 | ||
1452 | if (i->f->get_host_speed) | |
1453 | i->f->get_host_speed(shost); | |
1454 | ||
1455 | if (fc_host_speed(shost) == FC_PORTSPEED_UNKNOWN) | |
1456 | return snprintf(buf, 20, "unknown\n"); | |
1457 | ||
1458 | return get_fc_port_speed_names(fc_host_speed(shost), buf); | |
1459 | } | |
ee959b00 | 1460 | static FC_DEVICE_ATTR(host, speed, S_IRUGO, |
1da177e4 LT |
1461 | show_fc_host_speed, NULL); |
1462 | ||
1463 | ||
1464 | fc_host_rd_attr(port_id, "0x%06x\n", 20); | |
1465 | fc_host_rd_enum_attr(port_type, FC_PORTTYPE_MAX_NAMELEN); | |
1466 | fc_host_rd_enum_attr(port_state, FC_PORTSTATE_MAX_NAMELEN); | |
1467 | fc_host_rd_attr_cast(fabric_name, "0x%llx\n", 20, unsigned long long); | |
016131b8 | 1468 | fc_host_rd_attr(symbolic_name, "%s\n", FC_SYMBOLIC_NAME_SIZE + 1); |
1da177e4 | 1469 | |
b8d08210 JS |
1470 | fc_private_host_show_function(system_hostname, "%s\n", |
1471 | FC_SYMBOLIC_NAME_SIZE + 1, ) | |
1472 | fc_host_store_str_function(system_hostname, FC_SYMBOLIC_NAME_SIZE) | |
ee959b00 | 1473 | static FC_DEVICE_ATTR(host, system_hostname, S_IRUGO | S_IWUSR, |
b8d08210 JS |
1474 | show_fc_host_system_hostname, store_fc_host_system_hostname); |
1475 | ||
1da177e4 LT |
1476 | |
1477 | /* Private Host Attributes */ | |
1478 | ||
1479 | static ssize_t | |
ee959b00 TJ |
1480 | show_fc_private_host_tgtid_bind_type(struct device *dev, |
1481 | struct device_attribute *attr, char *buf) | |
1da177e4 | 1482 | { |
ee959b00 | 1483 | struct Scsi_Host *shost = transport_class_to_shost(dev); |
1da177e4 LT |
1484 | const char *name; |
1485 | ||
1486 | name = get_fc_tgtid_bind_type_name(fc_host_tgtid_bind_type(shost)); | |
1487 | if (!name) | |
1488 | return -EINVAL; | |
1489 | return snprintf(buf, FC_BINDTYPE_MAX_NAMELEN, "%s\n", name); | |
1490 | } | |
1491 | ||
d16794f6 JSEC |
1492 | #define get_list_head_entry(pos, head, member) \ |
1493 | pos = list_entry((head)->next, typeof(*pos), member) | |
1494 | ||
1da177e4 | 1495 | static ssize_t |
ee959b00 TJ |
1496 | store_fc_private_host_tgtid_bind_type(struct device *dev, |
1497 | struct device_attribute *attr, const char *buf, size_t count) | |
1da177e4 | 1498 | { |
ee959b00 | 1499 | struct Scsi_Host *shost = transport_class_to_shost(dev); |
d16794f6 | 1500 | struct fc_rport *rport; |
1da177e4 LT |
1501 | enum fc_tgtid_binding_type val; |
1502 | unsigned long flags; | |
1503 | ||
1504 | if (get_fc_tgtid_bind_type_match(buf, &val)) | |
1505 | return -EINVAL; | |
1506 | ||
1507 | /* if changing bind type, purge all unused consistent bindings */ | |
1508 | if (val != fc_host_tgtid_bind_type(shost)) { | |
1509 | spin_lock_irqsave(shost->host_lock, flags); | |
d16794f6 JSEC |
1510 | while (!list_empty(&fc_host_rport_bindings(shost))) { |
1511 | get_list_head_entry(rport, | |
1512 | &fc_host_rport_bindings(shost), peers); | |
aedf3497 JS |
1513 | list_del(&rport->peers); |
1514 | rport->port_state = FC_PORTSTATE_DELETED; | |
1515 | fc_queue_work(shost, &rport->rport_delete_work); | |
d16794f6 | 1516 | } |
1da177e4 LT |
1517 | spin_unlock_irqrestore(shost->host_lock, flags); |
1518 | } | |
1519 | ||
1520 | fc_host_tgtid_bind_type(shost) = val; | |
1521 | return count; | |
1522 | } | |
1523 | ||
ee959b00 | 1524 | static FC_DEVICE_ATTR(host, tgtid_bind_type, S_IRUGO | S_IWUSR, |
1da177e4 LT |
1525 | show_fc_private_host_tgtid_bind_type, |
1526 | store_fc_private_host_tgtid_bind_type); | |
1527 | ||
91ca7b01 | 1528 | static ssize_t |
ee959b00 TJ |
1529 | store_fc_private_host_issue_lip(struct device *dev, |
1530 | struct device_attribute *attr, const char *buf, size_t count) | |
91ca7b01 | 1531 | { |
ee959b00 | 1532 | struct Scsi_Host *shost = transport_class_to_shost(dev); |
91ca7b01 AV |
1533 | struct fc_internal *i = to_fc_internal(shost->transportt); |
1534 | int ret; | |
1535 | ||
1536 | /* ignore any data value written to the attribute */ | |
1537 | if (i->f->issue_fc_host_lip) { | |
1538 | ret = i->f->issue_fc_host_lip(shost); | |
1539 | return ret ? ret: count; | |
1540 | } | |
1541 | ||
1542 | return -ENOENT; | |
1543 | } | |
1544 | ||
ee959b00 | 1545 | static FC_DEVICE_ATTR(host, issue_lip, S_IWUSR, NULL, |
91ca7b01 AV |
1546 | store_fc_private_host_issue_lip); |
1547 | ||
a53eb5e0 JS |
1548 | fc_private_host_rd_attr(npiv_vports_inuse, "%u\n", 20); |
1549 | ||
1550 | ||
1da177e4 LT |
1551 | /* |
1552 | * Host Statistics Management | |
1553 | */ | |
1554 | ||
1555 | /* Show a given an attribute in the statistics group */ | |
1556 | static ssize_t | |
ee959b00 | 1557 | fc_stat_show(const struct device *dev, char *buf, unsigned long offset) |
1da177e4 | 1558 | { |
ee959b00 | 1559 | struct Scsi_Host *shost = transport_class_to_shost(dev); |
1da177e4 LT |
1560 | struct fc_internal *i = to_fc_internal(shost->transportt); |
1561 | struct fc_host_statistics *stats; | |
1562 | ssize_t ret = -ENOENT; | |
1563 | ||
1564 | if (offset > sizeof(struct fc_host_statistics) || | |
1565 | offset % sizeof(u64) != 0) | |
1566 | WARN_ON(1); | |
1567 | ||
1568 | if (i->f->get_fc_host_stats) { | |
1569 | stats = (i->f->get_fc_host_stats)(shost); | |
1570 | if (stats) | |
1571 | ret = snprintf(buf, 20, "0x%llx\n", | |
1572 | (unsigned long long)*(u64 *)(((u8 *) stats) + offset)); | |
1573 | } | |
1574 | return ret; | |
1575 | } | |
1576 | ||
1577 | ||
1578 | /* generate a read-only statistics attribute */ | |
1579 | #define fc_host_statistic(name) \ | |
ee959b00 TJ |
1580 | static ssize_t show_fcstat_##name(struct device *cd, \ |
1581 | struct device_attribute *attr, \ | |
1582 | char *buf) \ | |
1da177e4 LT |
1583 | { \ |
1584 | return fc_stat_show(cd, buf, \ | |
1585 | offsetof(struct fc_host_statistics, name)); \ | |
1586 | } \ | |
ee959b00 | 1587 | static FC_DEVICE_ATTR(host, name, S_IRUGO, show_fcstat_##name, NULL) |
1da177e4 LT |
1588 | |
1589 | fc_host_statistic(seconds_since_last_reset); | |
1590 | fc_host_statistic(tx_frames); | |
1591 | fc_host_statistic(tx_words); | |
1592 | fc_host_statistic(rx_frames); | |
1593 | fc_host_statistic(rx_words); | |
1594 | fc_host_statistic(lip_count); | |
1595 | fc_host_statistic(nos_count); | |
1596 | fc_host_statistic(error_frames); | |
1597 | fc_host_statistic(dumped_frames); | |
1598 | fc_host_statistic(link_failure_count); | |
1599 | fc_host_statistic(loss_of_sync_count); | |
1600 | fc_host_statistic(loss_of_signal_count); | |
1601 | fc_host_statistic(prim_seq_protocol_err_count); | |
1602 | fc_host_statistic(invalid_tx_word_count); | |
1603 | fc_host_statistic(invalid_crc_count); | |
1604 | fc_host_statistic(fcp_input_requests); | |
1605 | fc_host_statistic(fcp_output_requests); | |
1606 | fc_host_statistic(fcp_control_requests); | |
1607 | fc_host_statistic(fcp_input_megabytes); | |
1608 | fc_host_statistic(fcp_output_megabytes); | |
1609 | ||
1610 | static ssize_t | |
ee959b00 TJ |
1611 | fc_reset_statistics(struct device *dev, struct device_attribute *attr, |
1612 | const char *buf, size_t count) | |
1da177e4 | 1613 | { |
ee959b00 | 1614 | struct Scsi_Host *shost = transport_class_to_shost(dev); |
1da177e4 LT |
1615 | struct fc_internal *i = to_fc_internal(shost->transportt); |
1616 | ||
1617 | /* ignore any data value written to the attribute */ | |
1618 | if (i->f->reset_fc_host_stats) { | |
1619 | i->f->reset_fc_host_stats(shost); | |
1620 | return count; | |
1621 | } | |
1622 | ||
1623 | return -ENOENT; | |
1624 | } | |
ee959b00 | 1625 | static FC_DEVICE_ATTR(host, reset_statistics, S_IWUSR, NULL, |
1da177e4 LT |
1626 | fc_reset_statistics); |
1627 | ||
1da177e4 | 1628 | static struct attribute *fc_statistics_attrs[] = { |
ee959b00 TJ |
1629 | &device_attr_host_seconds_since_last_reset.attr, |
1630 | &device_attr_host_tx_frames.attr, | |
1631 | &device_attr_host_tx_words.attr, | |
1632 | &device_attr_host_rx_frames.attr, | |
1633 | &device_attr_host_rx_words.attr, | |
1634 | &device_attr_host_lip_count.attr, | |
1635 | &device_attr_host_nos_count.attr, | |
1636 | &device_attr_host_error_frames.attr, | |
1637 | &device_attr_host_dumped_frames.attr, | |
1638 | &device_attr_host_link_failure_count.attr, | |
1639 | &device_attr_host_loss_of_sync_count.attr, | |
1640 | &device_attr_host_loss_of_signal_count.attr, | |
1641 | &device_attr_host_prim_seq_protocol_err_count.attr, | |
1642 | &device_attr_host_invalid_tx_word_count.attr, | |
1643 | &device_attr_host_invalid_crc_count.attr, | |
1644 | &device_attr_host_fcp_input_requests.attr, | |
1645 | &device_attr_host_fcp_output_requests.attr, | |
1646 | &device_attr_host_fcp_control_requests.attr, | |
1647 | &device_attr_host_fcp_input_megabytes.attr, | |
1648 | &device_attr_host_fcp_output_megabytes.attr, | |
1649 | &device_attr_host_reset_statistics.attr, | |
1da177e4 LT |
1650 | NULL |
1651 | }; | |
1652 | ||
1653 | static struct attribute_group fc_statistics_group = { | |
1654 | .name = "statistics", | |
1655 | .attrs = fc_statistics_attrs, | |
1656 | }; | |
1657 | ||
a53eb5e0 JS |
1658 | |
1659 | /* Host Vport Attributes */ | |
1660 | ||
1661 | static int | |
1662 | fc_parse_wwn(const char *ns, u64 *nm) | |
1663 | { | |
1664 | unsigned int i, j; | |
1665 | u8 wwn[8]; | |
1666 | ||
1667 | memset(wwn, 0, sizeof(wwn)); | |
1668 | ||
1669 | /* Validate and store the new name */ | |
1670 | for (i=0, j=0; i < 16; i++) { | |
1671 | if ((*ns >= 'a') && (*ns <= 'f')) | |
1672 | j = ((j << 4) | ((*ns++ -'a') + 10)); | |
1673 | else if ((*ns >= 'A') && (*ns <= 'F')) | |
1674 | j = ((j << 4) | ((*ns++ -'A') + 10)); | |
1675 | else if ((*ns >= '0') && (*ns <= '9')) | |
1676 | j = ((j << 4) | (*ns++ -'0')); | |
1677 | else | |
1678 | return -EINVAL; | |
1679 | if (i % 2) { | |
1680 | wwn[i/2] = j & 0xff; | |
1681 | j = 0; | |
1682 | } | |
1683 | } | |
1684 | ||
1685 | *nm = wwn_to_u64(wwn); | |
1686 | ||
1687 | return 0; | |
1688 | } | |
1689 | ||
1690 | ||
1691 | /* | |
1692 | * "Short-cut" sysfs variable to create a new vport on a FC Host. | |
1693 | * Input is a string of the form "<WWPN>:<WWNN>". Other attributes | |
1694 | * will default to a NPIV-based FCP_Initiator; The WWNs are specified | |
1695 | * as hex characters, and may *not* contain any prefixes (e.g. 0x, x, etc) | |
1696 | */ | |
1697 | static ssize_t | |
ee959b00 TJ |
1698 | store_fc_host_vport_create(struct device *dev, struct device_attribute *attr, |
1699 | const char *buf, size_t count) | |
a53eb5e0 | 1700 | { |
ee959b00 | 1701 | struct Scsi_Host *shost = transport_class_to_shost(dev); |
a53eb5e0 JS |
1702 | struct fc_vport_identifiers vid; |
1703 | struct fc_vport *vport; | |
1704 | unsigned int cnt=count; | |
1705 | int stat; | |
1706 | ||
1707 | memset(&vid, 0, sizeof(vid)); | |
1708 | ||
1709 | /* count may include a LF at end of string */ | |
1710 | if (buf[cnt-1] == '\n') | |
1711 | cnt--; | |
1712 | ||
1713 | /* validate we have enough characters for WWPN */ | |
1714 | if ((cnt != (16+1+16)) || (buf[16] != ':')) | |
1715 | return -EINVAL; | |
1716 | ||
1717 | stat = fc_parse_wwn(&buf[0], &vid.port_name); | |
1718 | if (stat) | |
1719 | return stat; | |
1720 | ||
1721 | stat = fc_parse_wwn(&buf[17], &vid.node_name); | |
1722 | if (stat) | |
1723 | return stat; | |
1724 | ||
1725 | vid.roles = FC_PORT_ROLE_FCP_INITIATOR; | |
1726 | vid.vport_type = FC_PORTTYPE_NPIV; | |
1727 | /* vid.symbolic_name is already zero/NULL's */ | |
1728 | vid.disable = false; /* always enabled */ | |
1729 | ||
1730 | /* we only allow support on Channel 0 !!! */ | |
a30c3f69 | 1731 | stat = fc_vport_setup(shost, 0, &shost->shost_gendev, &vid, &vport); |
a53eb5e0 JS |
1732 | return stat ? stat : count; |
1733 | } | |
ee959b00 | 1734 | static FC_DEVICE_ATTR(host, vport_create, S_IWUSR, NULL, |
a53eb5e0 JS |
1735 | store_fc_host_vport_create); |
1736 | ||
1737 | ||
1738 | /* | |
1739 | * "Short-cut" sysfs variable to delete a vport on a FC Host. | |
1740 | * Vport is identified by a string containing "<WWPN>:<WWNN>". | |
1741 | * The WWNs are specified as hex characters, and may *not* contain | |
1742 | * any prefixes (e.g. 0x, x, etc) | |
1743 | */ | |
1744 | static ssize_t | |
ee959b00 TJ |
1745 | store_fc_host_vport_delete(struct device *dev, struct device_attribute *attr, |
1746 | const char *buf, size_t count) | |
a53eb5e0 | 1747 | { |
ee959b00 | 1748 | struct Scsi_Host *shost = transport_class_to_shost(dev); |
a53eb5e0 JS |
1749 | struct fc_host_attrs *fc_host = shost_to_fc_host(shost); |
1750 | struct fc_vport *vport; | |
1751 | u64 wwpn, wwnn; | |
1752 | unsigned long flags; | |
1753 | unsigned int cnt=count; | |
1754 | int stat, match; | |
1755 | ||
1756 | /* count may include a LF at end of string */ | |
1757 | if (buf[cnt-1] == '\n') | |
1758 | cnt--; | |
1759 | ||
1760 | /* validate we have enough characters for WWPN */ | |
1761 | if ((cnt != (16+1+16)) || (buf[16] != ':')) | |
1762 | return -EINVAL; | |
1763 | ||
1764 | stat = fc_parse_wwn(&buf[0], &wwpn); | |
1765 | if (stat) | |
1766 | return stat; | |
1767 | ||
1768 | stat = fc_parse_wwn(&buf[17], &wwnn); | |
1769 | if (stat) | |
1770 | return stat; | |
1771 | ||
1772 | spin_lock_irqsave(shost->host_lock, flags); | |
1773 | match = 0; | |
1774 | /* we only allow support on Channel 0 !!! */ | |
1775 | list_for_each_entry(vport, &fc_host->vports, peers) { | |
1776 | if ((vport->channel == 0) && | |
1777 | (vport->port_name == wwpn) && (vport->node_name == wwnn)) { | |
1778 | match = 1; | |
1779 | break; | |
1780 | } | |
1781 | } | |
1782 | spin_unlock_irqrestore(shost->host_lock, flags); | |
1783 | ||
1784 | if (!match) | |
1785 | return -ENODEV; | |
1786 | ||
1787 | stat = fc_vport_terminate(vport); | |
1788 | return stat ? stat : count; | |
1789 | } | |
ee959b00 | 1790 | static FC_DEVICE_ATTR(host, vport_delete, S_IWUSR, NULL, |
a53eb5e0 JS |
1791 | store_fc_host_vport_delete); |
1792 | ||
1793 | ||
1da177e4 LT |
1794 | static int fc_host_match(struct attribute_container *cont, |
1795 | struct device *dev) | |
1796 | { | |
1797 | struct Scsi_Host *shost; | |
1798 | struct fc_internal *i; | |
1799 | ||
1800 | if (!scsi_is_host_device(dev)) | |
1801 | return 0; | |
1802 | ||
1803 | shost = dev_to_shost(dev); | |
1804 | if (!shost->transportt || shost->transportt->host_attrs.ac.class | |
1805 | != &fc_host_class.class) | |
1806 | return 0; | |
1807 | ||
1808 | i = to_fc_internal(shost->transportt); | |
1809 | ||
1810 | return &i->t.host_attrs.ac == cont; | |
1811 | } | |
1812 | ||
1813 | static int fc_target_match(struct attribute_container *cont, | |
1814 | struct device *dev) | |
1815 | { | |
1816 | struct Scsi_Host *shost; | |
1817 | struct fc_internal *i; | |
1818 | ||
1819 | if (!scsi_is_target_device(dev)) | |
1820 | return 0; | |
1821 | ||
1822 | shost = dev_to_shost(dev->parent); | |
1823 | if (!shost->transportt || shost->transportt->host_attrs.ac.class | |
1824 | != &fc_host_class.class) | |
1825 | return 0; | |
1826 | ||
1827 | i = to_fc_internal(shost->transportt); | |
1828 | ||
1829 | return &i->t.target_attrs.ac == cont; | |
1830 | } | |
1831 | ||
1832 | static void fc_rport_dev_release(struct device *dev) | |
1833 | { | |
1834 | struct fc_rport *rport = dev_to_rport(dev); | |
1835 | put_device(dev->parent); | |
1836 | kfree(rport); | |
1837 | } | |
1838 | ||
1839 | int scsi_is_fc_rport(const struct device *dev) | |
1840 | { | |
1841 | return dev->release == fc_rport_dev_release; | |
1842 | } | |
1843 | EXPORT_SYMBOL(scsi_is_fc_rport); | |
1844 | ||
1845 | static int fc_rport_match(struct attribute_container *cont, | |
1846 | struct device *dev) | |
1847 | { | |
1848 | struct Scsi_Host *shost; | |
1849 | struct fc_internal *i; | |
1850 | ||
1851 | if (!scsi_is_fc_rport(dev)) | |
1852 | return 0; | |
1853 | ||
1854 | shost = dev_to_shost(dev->parent); | |
1855 | if (!shost->transportt || shost->transportt->host_attrs.ac.class | |
1856 | != &fc_host_class.class) | |
1857 | return 0; | |
1858 | ||
1859 | i = to_fc_internal(shost->transportt); | |
1860 | ||
1861 | return &i->rport_attr_cont.ac == cont; | |
1862 | } | |
1863 | ||
5c44cd2a | 1864 | |
a53eb5e0 JS |
1865 | static void fc_vport_dev_release(struct device *dev) |
1866 | { | |
1867 | struct fc_vport *vport = dev_to_vport(dev); | |
1868 | put_device(dev->parent); /* release kobj parent */ | |
1869 | kfree(vport); | |
1870 | } | |
1871 | ||
1872 | int scsi_is_fc_vport(const struct device *dev) | |
1873 | { | |
1874 | return dev->release == fc_vport_dev_release; | |
1875 | } | |
1876 | EXPORT_SYMBOL(scsi_is_fc_vport); | |
1877 | ||
1878 | static int fc_vport_match(struct attribute_container *cont, | |
1879 | struct device *dev) | |
1880 | { | |
1881 | struct fc_vport *vport; | |
1882 | struct Scsi_Host *shost; | |
1883 | struct fc_internal *i; | |
1884 | ||
1885 | if (!scsi_is_fc_vport(dev)) | |
1886 | return 0; | |
1887 | vport = dev_to_vport(dev); | |
1888 | ||
1889 | shost = vport_to_shost(vport); | |
1890 | if (!shost->transportt || shost->transportt->host_attrs.ac.class | |
1891 | != &fc_host_class.class) | |
1892 | return 0; | |
1893 | ||
1894 | i = to_fc_internal(shost->transportt); | |
1895 | return &i->vport_attr_cont.ac == cont; | |
1896 | } | |
1897 | ||
1898 | ||
c829c394 JS |
1899 | /** |
1900 | * fc_timed_out - FC Transport I/O timeout intercept handler | |
c829c394 JS |
1901 | * @scmd: The SCSI command which timed out |
1902 | * | |
1903 | * This routine protects against error handlers getting invoked while a | |
1904 | * rport is in a blocked state, typically due to a temporarily loss of | |
1905 | * connectivity. If the error handlers are allowed to proceed, requests | |
1906 | * to abort i/o, reset the target, etc will likely fail as there is no way | |
1907 | * to communicate with the device to perform the requested function. These | |
1908 | * failures may result in the midlayer taking the device offline, requiring | |
1909 | * manual intervention to restore operation. | |
1910 | * | |
1911 | * This routine, called whenever an i/o times out, validates the state of | |
1912 | * the underlying rport. If the rport is blocked, it returns | |
1913 | * EH_RESET_TIMER, which will continue to reschedule the timeout. | |
1914 | * Eventually, either the device will return, or devloss_tmo will fire, | |
1915 | * and when the timeout then fires, it will be handled normally. | |
1916 | * If the rport is not blocked, normal error handling continues. | |
1917 | * | |
1918 | * Notes: | |
1919 | * This routine assumes no locks are held on entry. | |
eb44820c | 1920 | */ |
242f9dcb | 1921 | static enum blk_eh_timer_return |
c829c394 JS |
1922 | fc_timed_out(struct scsi_cmnd *scmd) |
1923 | { | |
1924 | struct fc_rport *rport = starget_to_rport(scsi_target(scmd->device)); | |
1925 | ||
1926 | if (rport->port_state == FC_PORTSTATE_BLOCKED) | |
242f9dcb | 1927 | return BLK_EH_RESET_TIMER; |
c829c394 | 1928 | |
242f9dcb | 1929 | return BLK_EH_NOT_HANDLED; |
c829c394 JS |
1930 | } |
1931 | ||
5c44cd2a | 1932 | /* |
bda23253 JS |
1933 | * Called by fc_user_scan to locate an rport on the shost that |
1934 | * matches the channel and target id, and invoke scsi_scan_target() | |
1935 | * on the rport. | |
5c44cd2a | 1936 | */ |
bda23253 JS |
1937 | static void |
1938 | fc_user_scan_tgt(struct Scsi_Host *shost, uint channel, uint id, uint lun) | |
5c44cd2a JSEC |
1939 | { |
1940 | struct fc_rport *rport; | |
bda23253 JS |
1941 | unsigned long flags; |
1942 | ||
1943 | spin_lock_irqsave(shost->host_lock, flags); | |
5c44cd2a | 1944 | |
e02f3f59 CH |
1945 | list_for_each_entry(rport, &fc_host_rports(shost), peers) { |
1946 | if (rport->scsi_target_id == -1) | |
1947 | continue; | |
5c44cd2a | 1948 | |
0d2fcd9f HR |
1949 | if (rport->port_state != FC_PORTSTATE_ONLINE) |
1950 | continue; | |
1951 | ||
bda23253 JS |
1952 | if ((channel == rport->channel) && |
1953 | (id == rport->scsi_target_id)) { | |
1954 | spin_unlock_irqrestore(shost->host_lock, flags); | |
1955 | scsi_scan_target(&rport->dev, channel, id, lun, 1); | |
1956 | return; | |
e02f3f59 CH |
1957 | } |
1958 | } | |
1959 | ||
bda23253 JS |
1960 | spin_unlock_irqrestore(shost->host_lock, flags); |
1961 | } | |
1962 | ||
1963 | /* | |
1964 | * Called via sysfs scan routines. Necessary, as the FC transport | |
1965 | * wants to place all target objects below the rport object. So this | |
1966 | * routine must invoke the scsi_scan_target() routine with the rport | |
1967 | * object as the parent. | |
1968 | */ | |
1969 | static int | |
1970 | fc_user_scan(struct Scsi_Host *shost, uint channel, uint id, uint lun) | |
1971 | { | |
1972 | uint chlo, chhi; | |
1973 | uint tgtlo, tgthi; | |
1974 | ||
1975 | if (((channel != SCAN_WILD_CARD) && (channel > shost->max_channel)) || | |
1976 | ((id != SCAN_WILD_CARD) && (id >= shost->max_id)) || | |
1977 | ((lun != SCAN_WILD_CARD) && (lun > shost->max_lun))) | |
1978 | return -EINVAL; | |
1979 | ||
1980 | if (channel == SCAN_WILD_CARD) { | |
1981 | chlo = 0; | |
1982 | chhi = shost->max_channel + 1; | |
1983 | } else { | |
1984 | chlo = channel; | |
1985 | chhi = channel + 1; | |
1986 | } | |
1987 | ||
1988 | if (id == SCAN_WILD_CARD) { | |
1989 | tgtlo = 0; | |
1990 | tgthi = shost->max_id; | |
1991 | } else { | |
1992 | tgtlo = id; | |
1993 | tgthi = id + 1; | |
1994 | } | |
1995 | ||
1996 | for ( ; chlo < chhi; chlo++) | |
1997 | for ( ; tgtlo < tgthi; tgtlo++) | |
1998 | fc_user_scan_tgt(shost, chlo, tgtlo, lun); | |
1999 | ||
e02f3f59 | 2000 | return 0; |
5c44cd2a JSEC |
2001 | } |
2002 | ||
7525236d FT |
2003 | static int fc_tsk_mgmt_response(struct Scsi_Host *shost, u64 nexus, u64 tm_id, |
2004 | int result) | |
2005 | { | |
2006 | struct fc_internal *i = to_fc_internal(shost->transportt); | |
2007 | return i->f->tsk_mgmt_response(shost, nexus, tm_id, result); | |
2008 | } | |
2009 | ||
2010 | static int fc_it_nexus_response(struct Scsi_Host *shost, u64 nexus, int result) | |
2011 | { | |
2012 | struct fc_internal *i = to_fc_internal(shost->transportt); | |
2013 | return i->f->it_nexus_response(shost, nexus, result); | |
2014 | } | |
2015 | ||
1da177e4 LT |
2016 | struct scsi_transport_template * |
2017 | fc_attach_transport(struct fc_function_template *ft) | |
2018 | { | |
1da177e4 | 2019 | int count; |
24669f75 JS |
2020 | struct fc_internal *i = kzalloc(sizeof(struct fc_internal), |
2021 | GFP_KERNEL); | |
1da177e4 LT |
2022 | |
2023 | if (unlikely(!i)) | |
2024 | return NULL; | |
2025 | ||
1da177e4 LT |
2026 | i->t.target_attrs.ac.attrs = &i->starget_attrs[0]; |
2027 | i->t.target_attrs.ac.class = &fc_transport_class.class; | |
2028 | i->t.target_attrs.ac.match = fc_target_match; | |
2029 | i->t.target_size = sizeof(struct fc_starget_attrs); | |
2030 | transport_container_register(&i->t.target_attrs); | |
2031 | ||
2032 | i->t.host_attrs.ac.attrs = &i->host_attrs[0]; | |
2033 | i->t.host_attrs.ac.class = &fc_host_class.class; | |
2034 | i->t.host_attrs.ac.match = fc_host_match; | |
2035 | i->t.host_size = sizeof(struct fc_host_attrs); | |
2036 | if (ft->get_fc_host_stats) | |
2037 | i->t.host_attrs.statistics = &fc_statistics_group; | |
2038 | transport_container_register(&i->t.host_attrs); | |
2039 | ||
2040 | i->rport_attr_cont.ac.attrs = &i->rport_attrs[0]; | |
2041 | i->rport_attr_cont.ac.class = &fc_rport_class.class; | |
2042 | i->rport_attr_cont.ac.match = fc_rport_match; | |
2043 | transport_container_register(&i->rport_attr_cont); | |
2044 | ||
a53eb5e0 JS |
2045 | i->vport_attr_cont.ac.attrs = &i->vport_attrs[0]; |
2046 | i->vport_attr_cont.ac.class = &fc_vport_class.class; | |
2047 | i->vport_attr_cont.ac.match = fc_vport_match; | |
2048 | transport_container_register(&i->vport_attr_cont); | |
2049 | ||
1da177e4 LT |
2050 | i->f = ft; |
2051 | ||
2052 | /* Transport uses the shost workq for scsi scanning */ | |
2053 | i->t.create_work_queue = 1; | |
5c44cd2a | 2054 | |
c829c394 JS |
2055 | i->t.eh_timed_out = fc_timed_out; |
2056 | ||
e02f3f59 | 2057 | i->t.user_scan = fc_user_scan; |
9ef3e4a4 | 2058 | |
7525236d FT |
2059 | /* target-mode drivers' functions */ |
2060 | i->t.tsk_mgmt_response = fc_tsk_mgmt_response; | |
2061 | i->t.it_nexus_response = fc_it_nexus_response; | |
2062 | ||
1da177e4 LT |
2063 | /* |
2064 | * Setup SCSI Target Attributes. | |
2065 | */ | |
2066 | count = 0; | |
2067 | SETUP_STARGET_ATTRIBUTE_RD(node_name); | |
2068 | SETUP_STARGET_ATTRIBUTE_RD(port_name); | |
2069 | SETUP_STARGET_ATTRIBUTE_RD(port_id); | |
2070 | ||
2071 | BUG_ON(count > FC_STARGET_NUM_ATTRS); | |
2072 | ||
2073 | i->starget_attrs[count] = NULL; | |
2074 | ||
2075 | ||
2076 | /* | |
2077 | * Setup SCSI Host Attributes. | |
2078 | */ | |
2079 | count=0; | |
2080 | SETUP_HOST_ATTRIBUTE_RD(node_name); | |
2081 | SETUP_HOST_ATTRIBUTE_RD(port_name); | |
6b7281d0 | 2082 | SETUP_HOST_ATTRIBUTE_RD(permanent_port_name); |
1da177e4 LT |
2083 | SETUP_HOST_ATTRIBUTE_RD(supported_classes); |
2084 | SETUP_HOST_ATTRIBUTE_RD(supported_fc4s); | |
1da177e4 LT |
2085 | SETUP_HOST_ATTRIBUTE_RD(supported_speeds); |
2086 | SETUP_HOST_ATTRIBUTE_RD(maxframe_size); | |
a53eb5e0 JS |
2087 | if (ft->vport_create) { |
2088 | SETUP_HOST_ATTRIBUTE_RD_NS(max_npiv_vports); | |
2089 | SETUP_HOST_ATTRIBUTE_RD_NS(npiv_vports_inuse); | |
2090 | } | |
1da177e4 LT |
2091 | SETUP_HOST_ATTRIBUTE_RD(serial_number); |
2092 | ||
2093 | SETUP_HOST_ATTRIBUTE_RD(port_id); | |
2094 | SETUP_HOST_ATTRIBUTE_RD(port_type); | |
2095 | SETUP_HOST_ATTRIBUTE_RD(port_state); | |
2096 | SETUP_HOST_ATTRIBUTE_RD(active_fc4s); | |
2097 | SETUP_HOST_ATTRIBUTE_RD(speed); | |
2098 | SETUP_HOST_ATTRIBUTE_RD(fabric_name); | |
016131b8 | 2099 | SETUP_HOST_ATTRIBUTE_RD(symbolic_name); |
b8d08210 | 2100 | SETUP_HOST_ATTRIBUTE_RW(system_hostname); |
1da177e4 LT |
2101 | |
2102 | /* Transport-managed attributes */ | |
2103 | SETUP_PRIVATE_HOST_ATTRIBUTE_RW(tgtid_bind_type); | |
91ca7b01 AV |
2104 | if (ft->issue_fc_host_lip) |
2105 | SETUP_PRIVATE_HOST_ATTRIBUTE_RW(issue_lip); | |
a53eb5e0 JS |
2106 | if (ft->vport_create) |
2107 | SETUP_PRIVATE_HOST_ATTRIBUTE_RW(vport_create); | |
2108 | if (ft->vport_delete) | |
2109 | SETUP_PRIVATE_HOST_ATTRIBUTE_RW(vport_delete); | |
1da177e4 LT |
2110 | |
2111 | BUG_ON(count > FC_HOST_NUM_ATTRS); | |
2112 | ||
2113 | i->host_attrs[count] = NULL; | |
2114 | ||
2115 | /* | |
2116 | * Setup Remote Port Attributes. | |
2117 | */ | |
2118 | count=0; | |
2119 | SETUP_RPORT_ATTRIBUTE_RD(maxframe_size); | |
2120 | SETUP_RPORT_ATTRIBUTE_RD(supported_classes); | |
2121 | SETUP_RPORT_ATTRIBUTE_RW(dev_loss_tmo); | |
2122 | SETUP_PRIVATE_RPORT_ATTRIBUTE_RD(node_name); | |
2123 | SETUP_PRIVATE_RPORT_ATTRIBUTE_RD(port_name); | |
2124 | SETUP_PRIVATE_RPORT_ATTRIBUTE_RD(port_id); | |
2125 | SETUP_PRIVATE_RPORT_ATTRIBUTE_RD(roles); | |
2126 | SETUP_PRIVATE_RPORT_ATTRIBUTE_RD(port_state); | |
2127 | SETUP_PRIVATE_RPORT_ATTRIBUTE_RD(scsi_target_id); | |
fff9d40c | 2128 | SETUP_PRIVATE_RPORT_ATTRIBUTE_RW(fast_io_fail_tmo); |
1da177e4 LT |
2129 | |
2130 | BUG_ON(count > FC_RPORT_NUM_ATTRS); | |
2131 | ||
2132 | i->rport_attrs[count] = NULL; | |
2133 | ||
a53eb5e0 JS |
2134 | /* |
2135 | * Setup Virtual Port Attributes. | |
2136 | */ | |
2137 | count=0; | |
2138 | SETUP_PRIVATE_VPORT_ATTRIBUTE_RD(vport_state); | |
2139 | SETUP_PRIVATE_VPORT_ATTRIBUTE_RD(vport_last_state); | |
2140 | SETUP_PRIVATE_VPORT_ATTRIBUTE_RD(node_name); | |
2141 | SETUP_PRIVATE_VPORT_ATTRIBUTE_RD(port_name); | |
2142 | SETUP_PRIVATE_VPORT_ATTRIBUTE_RD(roles); | |
2143 | SETUP_PRIVATE_VPORT_ATTRIBUTE_RD(vport_type); | |
2144 | SETUP_VPORT_ATTRIBUTE_RW(symbolic_name); | |
2145 | SETUP_VPORT_ATTRIBUTE_WR(vport_delete); | |
2146 | SETUP_VPORT_ATTRIBUTE_WR(vport_disable); | |
2147 | ||
2148 | BUG_ON(count > FC_VPORT_NUM_ATTRS); | |
2149 | ||
2150 | i->vport_attrs[count] = NULL; | |
2151 | ||
1da177e4 LT |
2152 | return &i->t; |
2153 | } | |
2154 | EXPORT_SYMBOL(fc_attach_transport); | |
2155 | ||
2156 | void fc_release_transport(struct scsi_transport_template *t) | |
2157 | { | |
2158 | struct fc_internal *i = to_fc_internal(t); | |
2159 | ||
2160 | transport_container_unregister(&i->t.target_attrs); | |
2161 | transport_container_unregister(&i->t.host_attrs); | |
2162 | transport_container_unregister(&i->rport_attr_cont); | |
a53eb5e0 | 2163 | transport_container_unregister(&i->vport_attr_cont); |
1da177e4 LT |
2164 | |
2165 | kfree(i); | |
2166 | } | |
2167 | EXPORT_SYMBOL(fc_release_transport); | |
2168 | ||
aedf3497 JS |
2169 | /** |
2170 | * fc_queue_work - Queue work to the fc_host workqueue. | |
2171 | * @shost: Pointer to Scsi_Host bound to fc_host. | |
2172 | * @work: Work to queue for execution. | |
2173 | * | |
2174 | * Return value: | |
a0785edf JS |
2175 | * 1 - work queued for execution |
2176 | * 0 - work is already queued | |
2177 | * -EINVAL - work queue doesn't exist | |
eb44820c | 2178 | */ |
aedf3497 JS |
2179 | static int |
2180 | fc_queue_work(struct Scsi_Host *shost, struct work_struct *work) | |
2181 | { | |
2182 | if (unlikely(!fc_host_work_q(shost))) { | |
2183 | printk(KERN_ERR | |
2184 | "ERROR: FC host '%s' attempted to queue work, " | |
2185 | "when no workqueue created.\n", shost->hostt->name); | |
2186 | dump_stack(); | |
2187 | ||
2188 | return -EINVAL; | |
2189 | } | |
2190 | ||
2191 | return queue_work(fc_host_work_q(shost), work); | |
2192 | } | |
2193 | ||
2194 | /** | |
2195 | * fc_flush_work - Flush a fc_host's workqueue. | |
2196 | * @shost: Pointer to Scsi_Host bound to fc_host. | |
eb44820c | 2197 | */ |
aedf3497 JS |
2198 | static void |
2199 | fc_flush_work(struct Scsi_Host *shost) | |
2200 | { | |
2201 | if (!fc_host_work_q(shost)) { | |
2202 | printk(KERN_ERR | |
2203 | "ERROR: FC host '%s' attempted to flush work, " | |
2204 | "when no workqueue created.\n", shost->hostt->name); | |
2205 | dump_stack(); | |
2206 | return; | |
2207 | } | |
2208 | ||
2209 | flush_workqueue(fc_host_work_q(shost)); | |
2210 | } | |
2211 | ||
2212 | /** | |
2213 | * fc_queue_devloss_work - Schedule work for the fc_host devloss workqueue. | |
2214 | * @shost: Pointer to Scsi_Host bound to fc_host. | |
2215 | * @work: Work to queue for execution. | |
2216 | * @delay: jiffies to delay the work queuing | |
2217 | * | |
2218 | * Return value: | |
0f29b966 | 2219 | * 1 on success / 0 already queued / < 0 for error |
eb44820c | 2220 | */ |
aedf3497 | 2221 | static int |
c4028958 | 2222 | fc_queue_devloss_work(struct Scsi_Host *shost, struct delayed_work *work, |
aedf3497 JS |
2223 | unsigned long delay) |
2224 | { | |
2225 | if (unlikely(!fc_host_devloss_work_q(shost))) { | |
2226 | printk(KERN_ERR | |
2227 | "ERROR: FC host '%s' attempted to queue work, " | |
2228 | "when no workqueue created.\n", shost->hostt->name); | |
2229 | dump_stack(); | |
2230 | ||
2231 | return -EINVAL; | |
2232 | } | |
2233 | ||
2234 | return queue_delayed_work(fc_host_devloss_work_q(shost), work, delay); | |
2235 | } | |
2236 | ||
2237 | /** | |
2238 | * fc_flush_devloss - Flush a fc_host's devloss workqueue. | |
2239 | * @shost: Pointer to Scsi_Host bound to fc_host. | |
eb44820c | 2240 | */ |
aedf3497 JS |
2241 | static void |
2242 | fc_flush_devloss(struct Scsi_Host *shost) | |
2243 | { | |
2244 | if (!fc_host_devloss_work_q(shost)) { | |
2245 | printk(KERN_ERR | |
2246 | "ERROR: FC host '%s' attempted to flush work, " | |
2247 | "when no workqueue created.\n", shost->hostt->name); | |
2248 | dump_stack(); | |
2249 | return; | |
2250 | } | |
2251 | ||
2252 | flush_workqueue(fc_host_devloss_work_q(shost)); | |
2253 | } | |
2254 | ||
1da177e4 LT |
2255 | |
2256 | /** | |
eb44820c RL |
2257 | * fc_remove_host - called to terminate any fc_transport-related elements for a scsi host. |
2258 | * @shost: Which &Scsi_Host | |
1da177e4 LT |
2259 | * |
2260 | * This routine is expected to be called immediately preceeding the | |
2261 | * a driver's call to scsi_remove_host(). | |
2262 | * | |
2263 | * WARNING: A driver utilizing the fc_transport, which fails to call | |
eb44820c | 2264 | * this routine prior to scsi_remove_host(), will leave dangling |
1da177e4 LT |
2265 | * objects in /sys/class/fc_remote_ports. Access to any of these |
2266 | * objects can result in a system crash !!! | |
2267 | * | |
2268 | * Notes: | |
2269 | * This routine assumes no locks are held on entry. | |
eb44820c | 2270 | */ |
1da177e4 LT |
2271 | void |
2272 | fc_remove_host(struct Scsi_Host *shost) | |
2273 | { | |
a53eb5e0 JS |
2274 | struct fc_vport *vport = NULL, *next_vport = NULL; |
2275 | struct fc_rport *rport = NULL, *next_rport = NULL; | |
aedf3497 JS |
2276 | struct workqueue_struct *work_q; |
2277 | struct fc_host_attrs *fc_host = shost_to_fc_host(shost); | |
a53eb5e0 | 2278 | unsigned long flags; |
a53eb5e0 JS |
2279 | |
2280 | spin_lock_irqsave(shost->host_lock, flags); | |
2281 | ||
2282 | /* Remove any vports */ | |
9ef3e4a4 JS |
2283 | list_for_each_entry_safe(vport, next_vport, &fc_host->vports, peers) |
2284 | fc_queue_work(shost, &vport->vport_delete_work); | |
1da177e4 LT |
2285 | |
2286 | /* Remove any remote ports */ | |
2287 | list_for_each_entry_safe(rport, next_rport, | |
aedf3497 JS |
2288 | &fc_host->rports, peers) { |
2289 | list_del(&rport->peers); | |
2290 | rport->port_state = FC_PORTSTATE_DELETED; | |
2291 | fc_queue_work(shost, &rport->rport_delete_work); | |
2292 | } | |
2293 | ||
1da177e4 | 2294 | list_for_each_entry_safe(rport, next_rport, |
aedf3497 JS |
2295 | &fc_host->rport_bindings, peers) { |
2296 | list_del(&rport->peers); | |
2297 | rport->port_state = FC_PORTSTATE_DELETED; | |
2298 | fc_queue_work(shost, &rport->rport_delete_work); | |
2299 | } | |
2300 | ||
a53eb5e0 JS |
2301 | spin_unlock_irqrestore(shost->host_lock, flags); |
2302 | ||
aedf3497 JS |
2303 | /* flush all scan work items */ |
2304 | scsi_flush_work(shost); | |
2305 | ||
2306 | /* flush all stgt delete, and rport delete work items, then kill it */ | |
2307 | if (fc_host->work_q) { | |
2308 | work_q = fc_host->work_q; | |
2309 | fc_host->work_q = NULL; | |
2310 | destroy_workqueue(work_q); | |
2311 | } | |
2312 | ||
2313 | /* flush all devloss work items, then kill it */ | |
2314 | if (fc_host->devloss_work_q) { | |
2315 | work_q = fc_host->devloss_work_q; | |
2316 | fc_host->devloss_work_q = NULL; | |
2317 | destroy_workqueue(work_q); | |
2318 | } | |
1da177e4 LT |
2319 | } |
2320 | EXPORT_SYMBOL(fc_remove_host); | |
2321 | ||
fff9d40c MC |
2322 | static void fc_terminate_rport_io(struct fc_rport *rport) |
2323 | { | |
2324 | struct Scsi_Host *shost = rport_to_shost(rport); | |
2325 | struct fc_internal *i = to_fc_internal(shost->transportt); | |
2326 | ||
2327 | /* Involve the LLDD if possible to terminate all io on the rport. */ | |
2328 | if (i->f->terminate_rport_io) | |
2329 | i->f->terminate_rport_io(rport); | |
2330 | ||
2331 | /* | |
2332 | * must unblock to flush queued IO. The caller will have set | |
2333 | * the port_state or flags, so that fc_remote_port_chkready will | |
2334 | * fail IO. | |
2335 | */ | |
2336 | scsi_target_unblock(&rport->dev); | |
2337 | } | |
aedf3497 JS |
2338 | |
2339 | /** | |
2340 | * fc_starget_delete - called to delete the scsi decendents of an rport | |
c4028958 | 2341 | * @work: remote port to be operated on. |
eb44820c RL |
2342 | * |
2343 | * Deletes target and all sdevs. | |
2344 | */ | |
19a7b4ae | 2345 | static void |
c4028958 | 2346 | fc_starget_delete(struct work_struct *work) |
19a7b4ae | 2347 | { |
c4028958 DH |
2348 | struct fc_rport *rport = |
2349 | container_of(work, struct fc_rport, stgt_delete_work); | |
19a7b4ae | 2350 | |
fff9d40c | 2351 | fc_terminate_rport_io(rport); |
19a7b4ae JSEC |
2352 | scsi_remove_target(&rport->dev); |
2353 | } | |
2354 | ||
aedf3497 JS |
2355 | |
2356 | /** | |
2357 | * fc_rport_final_delete - finish rport termination and delete it. | |
c4028958 | 2358 | * @work: remote port to be deleted. |
eb44820c | 2359 | */ |
aedf3497 | 2360 | static void |
c4028958 | 2361 | fc_rport_final_delete(struct work_struct *work) |
aedf3497 | 2362 | { |
c4028958 DH |
2363 | struct fc_rport *rport = |
2364 | container_of(work, struct fc_rport, rport_delete_work); | |
aedf3497 JS |
2365 | struct device *dev = &rport->dev; |
2366 | struct Scsi_Host *shost = rport_to_shost(rport); | |
0f29b966 | 2367 | struct fc_internal *i = to_fc_internal(shost->transportt); |
92740b24 | 2368 | unsigned long flags; |
aedf3497 JS |
2369 | |
2370 | /* | |
9ef3e4a4 | 2371 | * if a scan is pending, flush the SCSI Host work_q so that |
aedf3497 JS |
2372 | * that we can reclaim the rport scan work element. |
2373 | */ | |
2374 | if (rport->flags & FC_RPORT_SCAN_PENDING) | |
2375 | scsi_flush_work(shost); | |
2376 | ||
fff9d40c | 2377 | fc_terminate_rport_io(rport); |
92740b24 JS |
2378 | /* |
2379 | * Cancel any outstanding timers. These should really exist | |
2380 | * only when rmmod'ing the LLDD and we're asking for | |
2381 | * immediate termination of the rports | |
2382 | */ | |
2383 | spin_lock_irqsave(shost->host_lock, flags); | |
2384 | if (rport->flags & FC_RPORT_DEVLOSS_PENDING) { | |
2385 | spin_unlock_irqrestore(shost->host_lock, flags); | |
2386 | if (!cancel_delayed_work(&rport->fail_io_work)) | |
2387 | fc_flush_devloss(shost); | |
2388 | if (!cancel_delayed_work(&rport->dev_loss_work)) | |
2389 | fc_flush_devloss(shost); | |
2390 | spin_lock_irqsave(shost->host_lock, flags); | |
2391 | rport->flags &= ~FC_RPORT_DEVLOSS_PENDING; | |
2392 | } | |
2393 | spin_unlock_irqrestore(shost->host_lock, flags); | |
2394 | ||
0f29b966 JS |
2395 | /* Delete SCSI target and sdevs */ |
2396 | if (rport->scsi_target_id != -1) | |
c4028958 | 2397 | fc_starget_delete(&rport->stgt_delete_work); |
92740b24 JS |
2398 | |
2399 | /* | |
2400 | * Notify the driver that the rport is now dead. The LLDD will | |
2401 | * also guarantee that any communication to the rport is terminated | |
4be98c0c JS |
2402 | * |
2403 | * Avoid this call if we already called it when we preserved the | |
2404 | * rport for the binding. | |
92740b24 | 2405 | */ |
4be98c0c JS |
2406 | if (!(rport->flags & FC_RPORT_DEVLOSS_CALLBK_DONE) && |
2407 | (i->f->dev_loss_tmo_callbk)) | |
0f29b966 | 2408 | i->f->dev_loss_tmo_callbk(rport); |
0f29b966 | 2409 | |
aedf3497 JS |
2410 | transport_remove_device(dev); |
2411 | device_del(dev); | |
2412 | transport_destroy_device(dev); | |
3bdad7bd JS |
2413 | put_device(&shost->shost_gendev); /* for fc_host->rport list */ |
2414 | put_device(dev); /* for self-reference */ | |
aedf3497 JS |
2415 | } |
2416 | ||
2417 | ||
1da177e4 LT |
2418 | /** |
2419 | * fc_rport_create - allocates and creates a remote FC port. | |
2420 | * @shost: scsi host the remote port is connected to. | |
2421 | * @channel: Channel on shost port connected to. | |
2422 | * @ids: The world wide names, fc address, and FC4 port | |
2423 | * roles for the remote port. | |
2424 | * | |
2425 | * Allocates and creates the remoter port structure, including the | |
2426 | * class and sysfs creation. | |
2427 | * | |
2428 | * Notes: | |
2429 | * This routine assumes no locks are held on entry. | |
eb44820c | 2430 | */ |
44818efb | 2431 | static struct fc_rport * |
1da177e4 LT |
2432 | fc_rport_create(struct Scsi_Host *shost, int channel, |
2433 | struct fc_rport_identifiers *ids) | |
2434 | { | |
aedf3497 | 2435 | struct fc_host_attrs *fc_host = shost_to_fc_host(shost); |
1da177e4 LT |
2436 | struct fc_internal *fci = to_fc_internal(shost->transportt); |
2437 | struct fc_rport *rport; | |
2438 | struct device *dev; | |
2439 | unsigned long flags; | |
2440 | int error; | |
2441 | size_t size; | |
2442 | ||
2443 | size = (sizeof(struct fc_rport) + fci->f->dd_fcrport_size); | |
24669f75 | 2444 | rport = kzalloc(size, GFP_KERNEL); |
1da177e4 | 2445 | if (unlikely(!rport)) { |
cadbd4a5 | 2446 | printk(KERN_ERR "%s: allocation failure\n", __func__); |
1da177e4 LT |
2447 | return NULL; |
2448 | } | |
1da177e4 LT |
2449 | |
2450 | rport->maxframe_size = -1; | |
2451 | rport->supported_classes = FC_COS_UNSPECIFIED; | |
2452 | rport->dev_loss_tmo = fc_dev_loss_tmo; | |
2453 | memcpy(&rport->node_name, &ids->node_name, sizeof(rport->node_name)); | |
2454 | memcpy(&rport->port_name, &ids->port_name, sizeof(rport->port_name)); | |
2455 | rport->port_id = ids->port_id; | |
2456 | rport->roles = ids->roles; | |
2457 | rport->port_state = FC_PORTSTATE_ONLINE; | |
2458 | if (fci->f->dd_fcrport_size) | |
2459 | rport->dd_data = &rport[1]; | |
2460 | rport->channel = channel; | |
0f29b966 | 2461 | rport->fast_io_fail_tmo = -1; |
1da177e4 | 2462 | |
c4028958 DH |
2463 | INIT_DELAYED_WORK(&rport->dev_loss_work, fc_timeout_deleted_rport); |
2464 | INIT_DELAYED_WORK(&rport->fail_io_work, fc_timeout_fail_rport_io); | |
2465 | INIT_WORK(&rport->scan_work, fc_scsi_scan_rport); | |
2466 | INIT_WORK(&rport->stgt_delete_work, fc_starget_delete); | |
2467 | INIT_WORK(&rport->rport_delete_work, fc_rport_final_delete); | |
1da177e4 LT |
2468 | |
2469 | spin_lock_irqsave(shost->host_lock, flags); | |
2470 | ||
2471 | rport->number = fc_host->next_rport_number++; | |
a53eb5e0 | 2472 | if (rport->roles & FC_PORT_ROLE_FCP_TARGET) |
1da177e4 LT |
2473 | rport->scsi_target_id = fc_host->next_target_id++; |
2474 | else | |
2475 | rport->scsi_target_id = -1; | |
aedf3497 | 2476 | list_add_tail(&rport->peers, &fc_host->rports); |
3bdad7bd | 2477 | get_device(&shost->shost_gendev); /* for fc_host->rport list */ |
1da177e4 LT |
2478 | |
2479 | spin_unlock_irqrestore(shost->host_lock, flags); | |
2480 | ||
2481 | dev = &rport->dev; | |
3bdad7bd JS |
2482 | device_initialize(dev); /* takes self reference */ |
2483 | dev->parent = get_device(&shost->shost_gendev); /* parent reference */ | |
1da177e4 | 2484 | dev->release = fc_rport_dev_release; |
71610f55 KS |
2485 | dev_set_name(dev, "rport-%d:%d-%d", |
2486 | shost->host_no, channel, rport->number); | |
1da177e4 LT |
2487 | transport_setup_device(dev); |
2488 | ||
2489 | error = device_add(dev); | |
2490 | if (error) { | |
2491 | printk(KERN_ERR "FC Remote Port device_add failed\n"); | |
2492 | goto delete_rport; | |
2493 | } | |
2494 | transport_add_device(dev); | |
2495 | transport_configure_device(dev); | |
2496 | ||
a53eb5e0 | 2497 | if (rport->roles & FC_PORT_ROLE_FCP_TARGET) { |
1da177e4 | 2498 | /* initiate a scan of the target */ |
aedf3497 | 2499 | rport->flags |= FC_RPORT_SCAN_PENDING; |
1da177e4 | 2500 | scsi_queue_work(shost, &rport->scan_work); |
aedf3497 | 2501 | } |
1da177e4 LT |
2502 | |
2503 | return rport; | |
2504 | ||
2505 | delete_rport: | |
2506 | transport_destroy_device(dev); | |
1da177e4 LT |
2507 | spin_lock_irqsave(shost->host_lock, flags); |
2508 | list_del(&rport->peers); | |
3bdad7bd | 2509 | put_device(&shost->shost_gendev); /* for fc_host->rport list */ |
1da177e4 LT |
2510 | spin_unlock_irqrestore(shost->host_lock, flags); |
2511 | put_device(dev->parent); | |
2512 | kfree(rport); | |
2513 | return NULL; | |
2514 | } | |
2515 | ||
2516 | /** | |
eb44820c | 2517 | * fc_remote_port_add - notify fc transport of the existence of a remote FC port. |
1da177e4 LT |
2518 | * @shost: scsi host the remote port is connected to. |
2519 | * @channel: Channel on shost port connected to. | |
2520 | * @ids: The world wide names, fc address, and FC4 port | |
2521 | * roles for the remote port. | |
2522 | * | |
2523 | * The LLDD calls this routine to notify the transport of the existence | |
2524 | * of a remote port. The LLDD provides the unique identifiers (wwpn,wwn) | |
2525 | * of the port, it's FC address (port_id), and the FC4 roles that are | |
2526 | * active for the port. | |
2527 | * | |
2528 | * For ports that are FCP targets (aka scsi targets), the FC transport | |
2529 | * maintains consistent target id bindings on behalf of the LLDD. | |
2530 | * A consistent target id binding is an assignment of a target id to | |
2531 | * a remote port identifier, which persists while the scsi host is | |
2532 | * attached. The remote port can disappear, then later reappear, and | |
2533 | * it's target id assignment remains the same. This allows for shifts | |
2534 | * in FC addressing (if binding by wwpn or wwnn) with no apparent | |
2535 | * changes to the scsi subsystem which is based on scsi host number and | |
2536 | * target id values. Bindings are only valid during the attachment of | |
2537 | * the scsi host. If the host detaches, then later re-attaches, target | |
2538 | * id bindings may change. | |
2539 | * | |
2540 | * This routine is responsible for returning a remote port structure. | |
2541 | * The routine will search the list of remote ports it maintains | |
2542 | * internally on behalf of consistent target id mappings. If found, the | |
2543 | * remote port structure will be reused. Otherwise, a new remote port | |
2544 | * structure will be allocated. | |
2545 | * | |
2546 | * Whenever a remote port is allocated, a new fc_remote_port class | |
2547 | * device is created. | |
2548 | * | |
2549 | * Should not be called from interrupt context. | |
2550 | * | |
2551 | * Notes: | |
2552 | * This routine assumes no locks are held on entry. | |
eb44820c | 2553 | */ |
1da177e4 LT |
2554 | struct fc_rport * |
2555 | fc_remote_port_add(struct Scsi_Host *shost, int channel, | |
2556 | struct fc_rport_identifiers *ids) | |
2557 | { | |
19a7b4ae | 2558 | struct fc_internal *fci = to_fc_internal(shost->transportt); |
aedf3497 | 2559 | struct fc_host_attrs *fc_host = shost_to_fc_host(shost); |
1da177e4 LT |
2560 | struct fc_rport *rport; |
2561 | unsigned long flags; | |
2562 | int match = 0; | |
2563 | ||
aedf3497 JS |
2564 | /* ensure any stgt delete functions are done */ |
2565 | fc_flush_work(shost); | |
2566 | ||
19a7b4ae JSEC |
2567 | /* |
2568 | * Search the list of "active" rports, for an rport that has been | |
2569 | * deleted, but we've held off the real delete while the target | |
2570 | * is in a "blocked" state. | |
2571 | */ | |
2572 | spin_lock_irqsave(shost->host_lock, flags); | |
2573 | ||
aedf3497 | 2574 | list_for_each_entry(rport, &fc_host->rports, peers) { |
19a7b4ae JSEC |
2575 | |
2576 | if ((rport->port_state == FC_PORTSTATE_BLOCKED) && | |
2577 | (rport->channel == channel)) { | |
2578 | ||
aedf3497 | 2579 | switch (fc_host->tgtid_bind_type) { |
19a7b4ae JSEC |
2580 | case FC_TGTID_BIND_BY_WWPN: |
2581 | case FC_TGTID_BIND_NONE: | |
2582 | if (rport->port_name == ids->port_name) | |
2583 | match = 1; | |
2584 | break; | |
2585 | case FC_TGTID_BIND_BY_WWNN: | |
2586 | if (rport->node_name == ids->node_name) | |
2587 | match = 1; | |
2588 | break; | |
2589 | case FC_TGTID_BIND_BY_ID: | |
2590 | if (rport->port_id == ids->port_id) | |
2591 | match = 1; | |
2592 | break; | |
2593 | } | |
2594 | ||
2595 | if (match) { | |
19a7b4ae JSEC |
2596 | |
2597 | memcpy(&rport->node_name, &ids->node_name, | |
2598 | sizeof(rport->node_name)); | |
2599 | memcpy(&rport->port_name, &ids->port_name, | |
2600 | sizeof(rport->port_name)); | |
2601 | rport->port_id = ids->port_id; | |
2602 | ||
2603 | rport->port_state = FC_PORTSTATE_ONLINE; | |
2604 | rport->roles = ids->roles; | |
2605 | ||
2606 | spin_unlock_irqrestore(shost->host_lock, flags); | |
2607 | ||
2608 | if (fci->f->dd_fcrport_size) | |
2609 | memset(rport->dd_data, 0, | |
2610 | fci->f->dd_fcrport_size); | |
2611 | ||
2612 | /* | |
92740b24 JS |
2613 | * If we were not a target, cancel the |
2614 | * io terminate and rport timers, and | |
2615 | * we're done. | |
2616 | * | |
2617 | * If we were a target, but our new role | |
2618 | * doesn't indicate a target, leave the | |
2619 | * timers running expecting the role to | |
2620 | * change as the target fully logs in. If | |
2621 | * it doesn't, the target will be torn down. | |
2622 | * | |
2623 | * If we were a target, and our role shows | |
2624 | * we're still a target, cancel the timers | |
2625 | * and kick off a scan. | |
19a7b4ae | 2626 | */ |
19a7b4ae | 2627 | |
92740b24 JS |
2628 | /* was a target, not in roles */ |
2629 | if ((rport->scsi_target_id != -1) && | |
a53eb5e0 | 2630 | (!(ids->roles & FC_PORT_ROLE_FCP_TARGET))) |
92740b24 | 2631 | return rport; |
19a7b4ae JSEC |
2632 | |
2633 | /* | |
92740b24 JS |
2634 | * Stop the fail io and dev_loss timers. |
2635 | * If they flush, the port_state will | |
2636 | * be checked and will NOOP the function. | |
19a7b4ae | 2637 | */ |
0f29b966 JS |
2638 | if (!cancel_delayed_work(&rport->fail_io_work)) |
2639 | fc_flush_devloss(shost); | |
92740b24 | 2640 | if (!cancel_delayed_work(&rport->dev_loss_work)) |
aedf3497 JS |
2641 | fc_flush_devloss(shost); |
2642 | ||
2643 | spin_lock_irqsave(shost->host_lock, flags); | |
2644 | ||
fff9d40c | 2645 | rport->flags &= ~(FC_RPORT_FAST_FAIL_TIMEDOUT | |
4be98c0c JS |
2646 | FC_RPORT_DEVLOSS_PENDING | |
2647 | FC_RPORT_DEVLOSS_CALLBK_DONE); | |
19a7b4ae | 2648 | |
92740b24 JS |
2649 | /* if target, initiate a scan */ |
2650 | if (rport->scsi_target_id != -1) { | |
2651 | rport->flags |= FC_RPORT_SCAN_PENDING; | |
2652 | scsi_queue_work(shost, | |
2653 | &rport->scan_work); | |
2654 | spin_unlock_irqrestore(shost->host_lock, | |
2655 | flags); | |
2656 | scsi_target_unblock(&rport->dev); | |
2657 | } else | |
2658 | spin_unlock_irqrestore(shost->host_lock, | |
2659 | flags); | |
a0785edf | 2660 | |
19a7b4ae JSEC |
2661 | return rport; |
2662 | } | |
2663 | } | |
2664 | } | |
2665 | ||
92740b24 JS |
2666 | /* |
2667 | * Search the bindings array | |
2668 | * Note: if never a FCP target, you won't be on this list | |
2669 | */ | |
aedf3497 | 2670 | if (fc_host->tgtid_bind_type != FC_TGTID_BIND_NONE) { |
1da177e4 LT |
2671 | |
2672 | /* search for a matching consistent binding */ | |
2673 | ||
aedf3497 | 2674 | list_for_each_entry(rport, &fc_host->rport_bindings, |
1da177e4 LT |
2675 | peers) { |
2676 | if (rport->channel != channel) | |
2677 | continue; | |
2678 | ||
aedf3497 | 2679 | switch (fc_host->tgtid_bind_type) { |
1da177e4 LT |
2680 | case FC_TGTID_BIND_BY_WWPN: |
2681 | if (rport->port_name == ids->port_name) | |
2682 | match = 1; | |
2683 | break; | |
2684 | case FC_TGTID_BIND_BY_WWNN: | |
2685 | if (rport->node_name == ids->node_name) | |
2686 | match = 1; | |
2687 | break; | |
2688 | case FC_TGTID_BIND_BY_ID: | |
2689 | if (rport->port_id == ids->port_id) | |
2690 | match = 1; | |
2691 | break; | |
2692 | case FC_TGTID_BIND_NONE: /* to keep compiler happy */ | |
2693 | break; | |
2694 | } | |
2695 | ||
2696 | if (match) { | |
aedf3497 | 2697 | list_move_tail(&rport->peers, &fc_host->rports); |
1da177e4 LT |
2698 | break; |
2699 | } | |
2700 | } | |
2701 | ||
1da177e4 LT |
2702 | if (match) { |
2703 | memcpy(&rport->node_name, &ids->node_name, | |
2704 | sizeof(rport->node_name)); | |
2705 | memcpy(&rport->port_name, &ids->port_name, | |
2706 | sizeof(rport->port_name)); | |
2707 | rport->port_id = ids->port_id; | |
2708 | rport->roles = ids->roles; | |
2709 | rport->port_state = FC_PORTSTATE_ONLINE; | |
fff9d40c | 2710 | rport->flags &= ~FC_RPORT_FAST_FAIL_TIMEDOUT; |
1da177e4 | 2711 | |
19a7b4ae JSEC |
2712 | if (fci->f->dd_fcrport_size) |
2713 | memset(rport->dd_data, 0, | |
2714 | fci->f->dd_fcrport_size); | |
2715 | ||
a53eb5e0 | 2716 | if (rport->roles & FC_PORT_ROLE_FCP_TARGET) { |
1da177e4 | 2717 | /* initiate a scan of the target */ |
aedf3497 | 2718 | rport->flags |= FC_RPORT_SCAN_PENDING; |
1da177e4 | 2719 | scsi_queue_work(shost, &rport->scan_work); |
a0785edf JS |
2720 | spin_unlock_irqrestore(shost->host_lock, flags); |
2721 | scsi_target_unblock(&rport->dev); | |
2722 | } else | |
2723 | spin_unlock_irqrestore(shost->host_lock, flags); | |
1da177e4 LT |
2724 | |
2725 | return rport; | |
2726 | } | |
2727 | } | |
2728 | ||
19a7b4ae JSEC |
2729 | spin_unlock_irqrestore(shost->host_lock, flags); |
2730 | ||
1da177e4 LT |
2731 | /* No consistent binding found - create new remote port entry */ |
2732 | rport = fc_rport_create(shost, channel, ids); | |
2733 | ||
2734 | return rport; | |
2735 | } | |
2736 | EXPORT_SYMBOL(fc_remote_port_add); | |
2737 | ||
1da177e4 LT |
2738 | |
2739 | /** | |
eb44820c | 2740 | * fc_remote_port_delete - notifies the fc transport that a remote port is no longer in existence. |
1da177e4 LT |
2741 | * @rport: The remote port that no longer exists |
2742 | * | |
2743 | * The LLDD calls this routine to notify the transport that a remote | |
2744 | * port is no longer part of the topology. Note: Although a port | |
2745 | * may no longer be part of the topology, it may persist in the remote | |
19a7b4ae | 2746 | * ports displayed by the fc_host. We do this under 2 conditions: |
eb44820c | 2747 | * 1) If the port was a scsi target, we delay its deletion by "blocking" it. |
19a7b4ae JSEC |
2748 | * This allows the port to temporarily disappear, then reappear without |
2749 | * disrupting the SCSI device tree attached to it. During the "blocked" | |
2750 | * period the port will still exist. | |
eb44820c | 2751 | * 2) If the port was a scsi target and disappears for longer than we |
19a7b4ae JSEC |
2752 | * expect, we'll delete the port and the tear down the SCSI device tree |
2753 | * attached to it. However, we want to semi-persist the target id assigned | |
2754 | * to that port if it eventually does exist. The port structure will | |
2755 | * remain (although with minimal information) so that the target id | |
2756 | * bindings remails. | |
1da177e4 LT |
2757 | * |
2758 | * If the remote port is not an FCP Target, it will be fully torn down | |
2759 | * and deallocated, including the fc_remote_port class device. | |
2760 | * | |
19a7b4ae JSEC |
2761 | * If the remote port is an FCP Target, the port will be placed in a |
2762 | * temporary blocked state. From the LLDD's perspective, the rport no | |
2763 | * longer exists. From the SCSI midlayer's perspective, the SCSI target | |
2764 | * exists, but all sdevs on it are blocked from further I/O. The following | |
eb44820c RL |
2765 | * is then expected. |
2766 | * | |
19a7b4ae JSEC |
2767 | * If the remote port does not return (signaled by a LLDD call to |
2768 | * fc_remote_port_add()) within the dev_loss_tmo timeout, then the | |
2769 | * scsi target is removed - killing all outstanding i/o and removing the | |
2770 | * scsi devices attached ot it. The port structure will be marked Not | |
2771 | * Present and be partially cleared, leaving only enough information to | |
2772 | * recognize the remote port relative to the scsi target id binding if | |
2773 | * it later appears. The port will remain as long as there is a valid | |
2774 | * binding (e.g. until the user changes the binding type or unloads the | |
2775 | * scsi host with the binding). | |
1da177e4 | 2776 | * |
19a7b4ae JSEC |
2777 | * If the remote port returns within the dev_loss_tmo value (and matches |
2778 | * according to the target id binding type), the port structure will be | |
2779 | * reused. If it is no longer a SCSI target, the target will be torn | |
2780 | * down. If it continues to be a SCSI target, then the target will be | |
2781 | * unblocked (allowing i/o to be resumed), and a scan will be activated | |
2782 | * to ensure that all luns are detected. | |
2783 | * | |
2784 | * Called from normal process context only - cannot be called from interrupt. | |
1da177e4 LT |
2785 | * |
2786 | * Notes: | |
2787 | * This routine assumes no locks are held on entry. | |
eb44820c | 2788 | */ |
1da177e4 LT |
2789 | void |
2790 | fc_remote_port_delete(struct fc_rport *rport) | |
2791 | { | |
aedf3497 | 2792 | struct Scsi_Host *shost = rport_to_shost(rport); |
19a7b4ae | 2793 | int timeout = rport->dev_loss_tmo; |
aedf3497 JS |
2794 | unsigned long flags; |
2795 | ||
2796 | /* | |
2797 | * No need to flush the fc_host work_q's, as all adds are synchronous. | |
2798 | * | |
2799 | * We do need to reclaim the rport scan work element, so eventually | |
2800 | * (in fc_rport_final_delete()) we'll flush the scsi host work_q if | |
2801 | * there's still a scan pending. | |
2802 | */ | |
2803 | ||
2804 | spin_lock_irqsave(shost->host_lock, flags); | |
1da177e4 | 2805 | |
92740b24 | 2806 | if (rport->port_state != FC_PORTSTATE_ONLINE) { |
aedf3497 | 2807 | spin_unlock_irqrestore(shost->host_lock, flags); |
1da177e4 LT |
2808 | return; |
2809 | } | |
2810 | ||
92740b24 JS |
2811 | /* |
2812 | * In the past, we if this was not an FCP-Target, we would | |
2813 | * unconditionally just jump to deleting the rport. | |
2814 | * However, rports can be used as node containers by the LLDD, | |
2815 | * and its not appropriate to just terminate the rport at the | |
2816 | * first sign of a loss in connectivity. The LLDD may want to | |
2817 | * send ELS traffic to re-validate the login. If the rport is | |
2818 | * immediately deleted, it makes it inappropriate for a node | |
2819 | * container. | |
2820 | * So... we now unconditionally wait dev_loss_tmo before | |
2821 | * destroying an rport. | |
2822 | */ | |
2823 | ||
aedf3497 JS |
2824 | rport->port_state = FC_PORTSTATE_BLOCKED; |
2825 | ||
2826 | rport->flags |= FC_RPORT_DEVLOSS_PENDING; | |
2827 | ||
2828 | spin_unlock_irqrestore(shost->host_lock, flags); | |
2829 | ||
7525236d FT |
2830 | if (rport->roles & FC_PORT_ROLE_FCP_INITIATOR && |
2831 | shost->active_mode & MODE_TARGET) | |
2832 | fc_tgt_it_nexus_destroy(shost, (unsigned long)rport); | |
2833 | ||
19a7b4ae | 2834 | scsi_target_block(&rport->dev); |
1da177e4 | 2835 | |
0f29b966 JS |
2836 | /* see if we need to kill io faster than waiting for device loss */ |
2837 | if ((rport->fast_io_fail_tmo != -1) && | |
fff9d40c | 2838 | (rport->fast_io_fail_tmo < timeout)) |
0f29b966 JS |
2839 | fc_queue_devloss_work(shost, &rport->fail_io_work, |
2840 | rport->fast_io_fail_tmo * HZ); | |
2841 | ||
19a7b4ae | 2842 | /* cap the length the devices can be blocked until they are deleted */ |
aedf3497 | 2843 | fc_queue_devloss_work(shost, &rport->dev_loss_work, timeout * HZ); |
1da177e4 LT |
2844 | } |
2845 | EXPORT_SYMBOL(fc_remote_port_delete); | |
2846 | ||
2847 | /** | |
eb44820c | 2848 | * fc_remote_port_rolechg - notifies the fc transport that the roles on a remote may have changed. |
1da177e4 | 2849 | * @rport: The remote port that changed. |
eb44820c | 2850 | * @roles: New roles for this port. |
1da177e4 | 2851 | * |
eb44820c RL |
2852 | * Description: The LLDD calls this routine to notify the transport that the |
2853 | * roles on a remote port may have changed. The largest effect of this is | |
1da177e4 LT |
2854 | * if a port now becomes a FCP Target, it must be allocated a |
2855 | * scsi target id. If the port is no longer a FCP target, any | |
2856 | * scsi target id value assigned to it will persist in case the | |
2857 | * role changes back to include FCP Target. No changes in the scsi | |
2858 | * midlayer will be invoked if the role changes (in the expectation | |
2859 | * that the role will be resumed. If it doesn't normal error processing | |
2860 | * will take place). | |
2861 | * | |
2862 | * Should not be called from interrupt context. | |
2863 | * | |
2864 | * Notes: | |
2865 | * This routine assumes no locks are held on entry. | |
eb44820c | 2866 | */ |
1da177e4 LT |
2867 | void |
2868 | fc_remote_port_rolechg(struct fc_rport *rport, u32 roles) | |
2869 | { | |
2870 | struct Scsi_Host *shost = rport_to_shost(rport); | |
aedf3497 | 2871 | struct fc_host_attrs *fc_host = shost_to_fc_host(shost); |
1da177e4 LT |
2872 | unsigned long flags; |
2873 | int create = 0; | |
7525236d | 2874 | int ret; |
1da177e4 | 2875 | |
1da177e4 | 2876 | spin_lock_irqsave(shost->host_lock, flags); |
a53eb5e0 | 2877 | if (roles & FC_PORT_ROLE_FCP_TARGET) { |
19a7b4ae JSEC |
2878 | if (rport->scsi_target_id == -1) { |
2879 | rport->scsi_target_id = fc_host->next_target_id++; | |
2880 | create = 1; | |
a53eb5e0 | 2881 | } else if (!(rport->roles & FC_PORT_ROLE_FCP_TARGET)) |
19a7b4ae | 2882 | create = 1; |
7525236d FT |
2883 | } else if (shost->active_mode & MODE_TARGET) { |
2884 | ret = fc_tgt_it_nexus_create(shost, (unsigned long)rport, | |
2885 | (char *)&rport->node_name); | |
2886 | if (ret) | |
2887 | printk(KERN_ERR "FC Remore Port tgt nexus failed %d\n", | |
2888 | ret); | |
1da177e4 | 2889 | } |
1da177e4 | 2890 | |
19a7b4ae JSEC |
2891 | rport->roles = roles; |
2892 | ||
aedf3497 JS |
2893 | spin_unlock_irqrestore(shost->host_lock, flags); |
2894 | ||
19a7b4ae JSEC |
2895 | if (create) { |
2896 | /* | |
2897 | * There may have been a delete timer running on the | |
2898 | * port. Ensure that it is cancelled as we now know | |
2899 | * the port is an FCP Target. | |
2900 | * Note: we know the rport is exists and in an online | |
2901 | * state as the LLDD would not have had an rport | |
2902 | * reference to pass us. | |
2903 | * | |
2904 | * Take no action on the del_timer failure as the state | |
2905 | * machine state change will validate the | |
2906 | * transaction. | |
2907 | */ | |
0f29b966 JS |
2908 | if (!cancel_delayed_work(&rport->fail_io_work)) |
2909 | fc_flush_devloss(shost); | |
19a7b4ae | 2910 | if (!cancel_delayed_work(&rport->dev_loss_work)) |
aedf3497 JS |
2911 | fc_flush_devloss(shost); |
2912 | ||
2913 | spin_lock_irqsave(shost->host_lock, flags); | |
fff9d40c MC |
2914 | rport->flags &= ~(FC_RPORT_FAST_FAIL_TIMEDOUT | |
2915 | FC_RPORT_DEVLOSS_PENDING); | |
aedf3497 JS |
2916 | spin_unlock_irqrestore(shost->host_lock, flags); |
2917 | ||
2918 | /* ensure any stgt delete functions are done */ | |
2919 | fc_flush_work(shost); | |
19a7b4ae | 2920 | |
1da177e4 | 2921 | /* initiate a scan of the target */ |
aedf3497 JS |
2922 | spin_lock_irqsave(shost->host_lock, flags); |
2923 | rport->flags |= FC_RPORT_SCAN_PENDING; | |
1da177e4 | 2924 | scsi_queue_work(shost, &rport->scan_work); |
aedf3497 | 2925 | spin_unlock_irqrestore(shost->host_lock, flags); |
a0785edf | 2926 | scsi_target_unblock(&rport->dev); |
19a7b4ae | 2927 | } |
1da177e4 LT |
2928 | } |
2929 | EXPORT_SYMBOL(fc_remote_port_rolechg); | |
2930 | ||
2931 | /** | |
eb44820c | 2932 | * fc_timeout_deleted_rport - Timeout handler for a deleted remote port. |
92740b24 | 2933 | * @work: rport target that failed to reappear in the allotted time. |
eb44820c RL |
2934 | * |
2935 | * Description: An attempt to delete a remote port blocks, and if it fails | |
2936 | * to return in the allotted time this gets called. | |
2937 | */ | |
1da177e4 | 2938 | static void |
c4028958 | 2939 | fc_timeout_deleted_rport(struct work_struct *work) |
1da177e4 | 2940 | { |
c4028958 DH |
2941 | struct fc_rport *rport = |
2942 | container_of(work, struct fc_rport, dev_loss_work.work); | |
19a7b4ae | 2943 | struct Scsi_Host *shost = rport_to_shost(rport); |
4be98c0c | 2944 | struct fc_internal *i = to_fc_internal(shost->transportt); |
aedf3497 | 2945 | struct fc_host_attrs *fc_host = shost_to_fc_host(shost); |
19a7b4ae | 2946 | unsigned long flags; |
1da177e4 | 2947 | |
19a7b4ae | 2948 | spin_lock_irqsave(shost->host_lock, flags); |
1da177e4 | 2949 | |
aedf3497 JS |
2950 | rport->flags &= ~FC_RPORT_DEVLOSS_PENDING; |
2951 | ||
1da177e4 | 2952 | /* |
92740b24 JS |
2953 | * If the port is ONLINE, then it came back. If it was a SCSI |
2954 | * target, validate it still is. If not, tear down the | |
2955 | * scsi_target on it. | |
1da177e4 | 2956 | */ |
aedf3497 | 2957 | if ((rport->port_state == FC_PORTSTATE_ONLINE) && |
92740b24 | 2958 | (rport->scsi_target_id != -1) && |
a53eb5e0 | 2959 | !(rport->roles & FC_PORT_ROLE_FCP_TARGET)) { |
19a7b4ae | 2960 | dev_printk(KERN_ERR, &rport->dev, |
aedf3497 JS |
2961 | "blocked FC remote port time out: no longer" |
2962 | " a FCP target, removing starget\n"); | |
aedf3497 | 2963 | spin_unlock_irqrestore(shost->host_lock, flags); |
a0785edf JS |
2964 | scsi_target_unblock(&rport->dev); |
2965 | fc_queue_work(shost, &rport->stgt_delete_work); | |
19a7b4ae JSEC |
2966 | return; |
2967 | } | |
1da177e4 | 2968 | |
92740b24 | 2969 | /* NOOP state - we're flushing workq's */ |
19a7b4ae JSEC |
2970 | if (rport->port_state != FC_PORTSTATE_BLOCKED) { |
2971 | spin_unlock_irqrestore(shost->host_lock, flags); | |
2972 | dev_printk(KERN_ERR, &rport->dev, | |
92740b24 JS |
2973 | "blocked FC remote port time out: leaving" |
2974 | " rport%s alone\n", | |
2975 | (rport->scsi_target_id != -1) ? " and starget" : ""); | |
19a7b4ae JSEC |
2976 | return; |
2977 | } | |
1da177e4 | 2978 | |
92740b24 JS |
2979 | if ((fc_host->tgtid_bind_type == FC_TGTID_BIND_NONE) || |
2980 | (rport->scsi_target_id == -1)) { | |
aedf3497 JS |
2981 | list_del(&rport->peers); |
2982 | rport->port_state = FC_PORTSTATE_DELETED; | |
19a7b4ae | 2983 | dev_printk(KERN_ERR, &rport->dev, |
92740b24 JS |
2984 | "blocked FC remote port time out: removing" |
2985 | " rport%s\n", | |
2986 | (rport->scsi_target_id != -1) ? " and starget" : ""); | |
aedf3497 JS |
2987 | fc_queue_work(shost, &rport->rport_delete_work); |
2988 | spin_unlock_irqrestore(shost->host_lock, flags); | |
19a7b4ae JSEC |
2989 | return; |
2990 | } | |
1da177e4 | 2991 | |
19a7b4ae JSEC |
2992 | dev_printk(KERN_ERR, &rport->dev, |
2993 | "blocked FC remote port time out: removing target and " | |
2994 | "saving binding\n"); | |
2995 | ||
aedf3497 | 2996 | list_move_tail(&rport->peers, &fc_host->rport_bindings); |
1da177e4 LT |
2997 | |
2998 | /* | |
19a7b4ae JSEC |
2999 | * Note: We do not remove or clear the hostdata area. This allows |
3000 | * host-specific target data to persist along with the | |
3001 | * scsi_target_id. It's up to the host to manage it's hostdata area. | |
1da177e4 | 3002 | */ |
1da177e4 | 3003 | |
19a7b4ae JSEC |
3004 | /* |
3005 | * Reinitialize port attributes that may change if the port comes back. | |
3006 | */ | |
3007 | rport->maxframe_size = -1; | |
3008 | rport->supported_classes = FC_COS_UNSPECIFIED; | |
a53eb5e0 | 3009 | rport->roles = FC_PORT_ROLE_UNKNOWN; |
aedf3497 | 3010 | rport->port_state = FC_PORTSTATE_NOTPRESENT; |
fff9d40c | 3011 | rport->flags &= ~FC_RPORT_FAST_FAIL_TIMEDOUT; |
4be98c0c | 3012 | rport->flags |= FC_RPORT_DEVLOSS_CALLBK_DONE; |
1da177e4 | 3013 | |
f78badb1 JS |
3014 | /* |
3015 | * Pre-emptively kill I/O rather than waiting for the work queue | |
3016 | * item to teardown the starget. (FCOE libFC folks prefer this | |
3017 | * and to have the rport_port_id still set when it's done). | |
3018 | */ | |
3019 | spin_unlock_irqrestore(shost->host_lock, flags); | |
3020 | fc_terminate_rport_io(rport); | |
3021 | ||
3022 | BUG_ON(rport->port_state != FC_PORTSTATE_NOTPRESENT); | |
3023 | ||
19a7b4ae | 3024 | /* remove the identifiers that aren't used in the consisting binding */ |
aedf3497 | 3025 | switch (fc_host->tgtid_bind_type) { |
19a7b4ae JSEC |
3026 | case FC_TGTID_BIND_BY_WWPN: |
3027 | rport->node_name = -1; | |
3028 | rport->port_id = -1; | |
3029 | break; | |
3030 | case FC_TGTID_BIND_BY_WWNN: | |
3031 | rport->port_name = -1; | |
3032 | rport->port_id = -1; | |
3033 | break; | |
3034 | case FC_TGTID_BIND_BY_ID: | |
3035 | rport->node_name = -1; | |
3036 | rport->port_name = -1; | |
3037 | break; | |
3038 | case FC_TGTID_BIND_NONE: /* to keep compiler happy */ | |
3039 | break; | |
3040 | } | |
3041 | ||
19a7b4ae JSEC |
3042 | /* |
3043 | * As this only occurs if the remote port (scsi target) | |
3044 | * went away and didn't come back - we'll remove | |
3045 | * all attached scsi devices. | |
3046 | */ | |
a0785edf | 3047 | fc_queue_work(shost, &rport->stgt_delete_work); |
4be98c0c JS |
3048 | |
3049 | /* | |
3050 | * Notify the driver that the rport is now dead. The LLDD will | |
3051 | * also guarantee that any communication to the rport is terminated | |
3052 | * | |
3053 | * Note: we set the CALLBK_DONE flag above to correspond | |
3054 | */ | |
3055 | if (i->f->dev_loss_tmo_callbk) | |
3056 | i->f->dev_loss_tmo_callbk(rport); | |
1da177e4 | 3057 | } |
1da177e4 | 3058 | |
4be98c0c | 3059 | |
0f29b966 | 3060 | /** |
eb44820c | 3061 | * fc_timeout_fail_rport_io - Timeout handler for a fast io failing on a disconnected SCSI target. |
c4028958 | 3062 | * @work: rport to terminate io on. |
0f29b966 JS |
3063 | * |
3064 | * Notes: Only requests the failure of the io, not that all are flushed | |
3065 | * prior to returning. | |
eb44820c | 3066 | */ |
0f29b966 | 3067 | static void |
c4028958 | 3068 | fc_timeout_fail_rport_io(struct work_struct *work) |
0f29b966 | 3069 | { |
c4028958 DH |
3070 | struct fc_rport *rport = |
3071 | container_of(work, struct fc_rport, fail_io_work.work); | |
0f29b966 JS |
3072 | |
3073 | if (rport->port_state != FC_PORTSTATE_BLOCKED) | |
3074 | return; | |
3075 | ||
fff9d40c MC |
3076 | rport->flags |= FC_RPORT_FAST_FAIL_TIMEDOUT; |
3077 | fc_terminate_rport_io(rport); | |
0f29b966 JS |
3078 | } |
3079 | ||
1da177e4 LT |
3080 | /** |
3081 | * fc_scsi_scan_rport - called to perform a scsi scan on a remote port. | |
c4028958 | 3082 | * @work: remote port to be scanned. |
eb44820c | 3083 | */ |
1da177e4 | 3084 | static void |
c4028958 | 3085 | fc_scsi_scan_rport(struct work_struct *work) |
1da177e4 | 3086 | { |
c4028958 DH |
3087 | struct fc_rport *rport = |
3088 | container_of(work, struct fc_rport, scan_work); | |
aedf3497 | 3089 | struct Scsi_Host *shost = rport_to_shost(rport); |
03f002f7 | 3090 | struct fc_internal *i = to_fc_internal(shost->transportt); |
42e33148 JSEC |
3091 | unsigned long flags; |
3092 | ||
aedf3497 | 3093 | if ((rport->port_state == FC_PORTSTATE_ONLINE) && |
03f002f7 CS |
3094 | (rport->roles & FC_PORT_ROLE_FCP_TARGET) && |
3095 | !(i->f->disable_target_scan)) { | |
aedf3497 JS |
3096 | scsi_scan_target(&rport->dev, rport->channel, |
3097 | rport->scsi_target_id, SCAN_WILD_CARD, 1); | |
42e33148 | 3098 | } |
aedf3497 JS |
3099 | |
3100 | spin_lock_irqsave(shost->host_lock, flags); | |
3101 | rport->flags &= ~FC_RPORT_SCAN_PENDING; | |
42e33148 JSEC |
3102 | spin_unlock_irqrestore(shost->host_lock, flags); |
3103 | } | |
3104 | ||
3105 | ||
a53eb5e0 | 3106 | /** |
a30c3f69 | 3107 | * fc_vport_setup - allocates and creates a FC virtual port. |
a53eb5e0 JS |
3108 | * @shost: scsi host the virtual port is connected to. |
3109 | * @channel: Channel on shost port connected to. | |
3110 | * @pdev: parent device for vport | |
3111 | * @ids: The world wide names, FC4 port roles, etc for | |
3112 | * the virtual port. | |
3113 | * @ret_vport: The pointer to the created vport. | |
3114 | * | |
3115 | * Allocates and creates the vport structure, calls the parent host | |
3116 | * to instantiate the vport, the completes w/ class and sysfs creation. | |
3117 | * | |
3118 | * Notes: | |
3119 | * This routine assumes no locks are held on entry. | |
eb44820c | 3120 | */ |
a53eb5e0 | 3121 | static int |
a30c3f69 | 3122 | fc_vport_setup(struct Scsi_Host *shost, int channel, struct device *pdev, |
a53eb5e0 JS |
3123 | struct fc_vport_identifiers *ids, struct fc_vport **ret_vport) |
3124 | { | |
3125 | struct fc_host_attrs *fc_host = shost_to_fc_host(shost); | |
3126 | struct fc_internal *fci = to_fc_internal(shost->transportt); | |
3127 | struct fc_vport *vport; | |
3128 | struct device *dev; | |
3129 | unsigned long flags; | |
3130 | size_t size; | |
3131 | int error; | |
3132 | ||
3133 | *ret_vport = NULL; | |
3134 | ||
3135 | if ( ! fci->f->vport_create) | |
3136 | return -ENOENT; | |
3137 | ||
3138 | size = (sizeof(struct fc_vport) + fci->f->dd_fcvport_size); | |
3139 | vport = kzalloc(size, GFP_KERNEL); | |
3140 | if (unlikely(!vport)) { | |
cadbd4a5 | 3141 | printk(KERN_ERR "%s: allocation failure\n", __func__); |
a53eb5e0 JS |
3142 | return -ENOMEM; |
3143 | } | |
3144 | ||
3145 | vport->vport_state = FC_VPORT_UNKNOWN; | |
3146 | vport->vport_last_state = FC_VPORT_UNKNOWN; | |
3147 | vport->node_name = ids->node_name; | |
3148 | vport->port_name = ids->port_name; | |
3149 | vport->roles = ids->roles; | |
3150 | vport->vport_type = ids->vport_type; | |
3151 | if (fci->f->dd_fcvport_size) | |
3152 | vport->dd_data = &vport[1]; | |
3153 | vport->shost = shost; | |
3154 | vport->channel = channel; | |
3155 | vport->flags = FC_VPORT_CREATING; | |
9ef3e4a4 | 3156 | INIT_WORK(&vport->vport_delete_work, fc_vport_sched_delete); |
a53eb5e0 JS |
3157 | |
3158 | spin_lock_irqsave(shost->host_lock, flags); | |
3159 | ||
3160 | if (fc_host->npiv_vports_inuse >= fc_host->max_npiv_vports) { | |
3161 | spin_unlock_irqrestore(shost->host_lock, flags); | |
3162 | kfree(vport); | |
3163 | return -ENOSPC; | |
3164 | } | |
3165 | fc_host->npiv_vports_inuse++; | |
3166 | vport->number = fc_host->next_vport_number++; | |
3167 | list_add_tail(&vport->peers, &fc_host->vports); | |
3168 | get_device(&shost->shost_gendev); /* for fc_host->vport list */ | |
3169 | ||
3170 | spin_unlock_irqrestore(shost->host_lock, flags); | |
3171 | ||
3172 | dev = &vport->dev; | |
3173 | device_initialize(dev); /* takes self reference */ | |
3174 | dev->parent = get_device(pdev); /* takes parent reference */ | |
3175 | dev->release = fc_vport_dev_release; | |
71610f55 KS |
3176 | dev_set_name(dev, "vport-%d:%d-%d", |
3177 | shost->host_no, channel, vport->number); | |
a53eb5e0 JS |
3178 | transport_setup_device(dev); |
3179 | ||
3180 | error = device_add(dev); | |
3181 | if (error) { | |
3182 | printk(KERN_ERR "FC Virtual Port device_add failed\n"); | |
3183 | goto delete_vport; | |
3184 | } | |
3185 | transport_add_device(dev); | |
3186 | transport_configure_device(dev); | |
3187 | ||
3188 | error = fci->f->vport_create(vport, ids->disable); | |
3189 | if (error) { | |
3190 | printk(KERN_ERR "FC Virtual Port LLDD Create failed\n"); | |
3191 | goto delete_vport_all; | |
3192 | } | |
3193 | ||
3194 | /* | |
3195 | * if the parent isn't the physical adapter's Scsi_Host, ensure | |
3196 | * the Scsi_Host at least contains ia symlink to the vport. | |
3197 | */ | |
3198 | if (pdev != &shost->shost_gendev) { | |
3199 | error = sysfs_create_link(&shost->shost_gendev.kobj, | |
71610f55 | 3200 | &dev->kobj, dev_name(dev)); |
a53eb5e0 JS |
3201 | if (error) |
3202 | printk(KERN_ERR | |
3203 | "%s: Cannot create vport symlinks for " | |
3204 | "%s, err=%d\n", | |
71610f55 | 3205 | __func__, dev_name(dev), error); |
a53eb5e0 JS |
3206 | } |
3207 | spin_lock_irqsave(shost->host_lock, flags); | |
3208 | vport->flags &= ~FC_VPORT_CREATING; | |
3209 | spin_unlock_irqrestore(shost->host_lock, flags); | |
3210 | ||
3211 | dev_printk(KERN_NOTICE, pdev, | |
71610f55 | 3212 | "%s created via shost%d channel %d\n", dev_name(dev), |
a53eb5e0 JS |
3213 | shost->host_no, channel); |
3214 | ||
3215 | *ret_vport = vport; | |
3216 | ||
3217 | return 0; | |
3218 | ||
3219 | delete_vport_all: | |
3220 | transport_remove_device(dev); | |
3221 | device_del(dev); | |
3222 | delete_vport: | |
3223 | transport_destroy_device(dev); | |
3224 | spin_lock_irqsave(shost->host_lock, flags); | |
3225 | list_del(&vport->peers); | |
3226 | put_device(&shost->shost_gendev); /* for fc_host->vport list */ | |
3227 | fc_host->npiv_vports_inuse--; | |
3228 | spin_unlock_irqrestore(shost->host_lock, flags); | |
3229 | put_device(dev->parent); | |
3230 | kfree(vport); | |
3231 | ||
3232 | return error; | |
3233 | } | |
3234 | ||
a30c3f69 AV |
3235 | /** |
3236 | * fc_vport_create - Admin App or LLDD requests creation of a vport | |
3237 | * @shost: scsi host the virtual port is connected to. | |
3238 | * @channel: channel on shost port connected to. | |
3239 | * @ids: The world wide names, FC4 port roles, etc for | |
3240 | * the virtual port. | |
3241 | * | |
3242 | * Notes: | |
3243 | * This routine assumes no locks are held on entry. | |
3244 | */ | |
3245 | struct fc_vport * | |
3246 | fc_vport_create(struct Scsi_Host *shost, int channel, | |
3247 | struct fc_vport_identifiers *ids) | |
3248 | { | |
3249 | int stat; | |
3250 | struct fc_vport *vport; | |
3251 | ||
3252 | stat = fc_vport_setup(shost, channel, &shost->shost_gendev, | |
3253 | ids, &vport); | |
3254 | return stat ? NULL : vport; | |
3255 | } | |
3256 | EXPORT_SYMBOL(fc_vport_create); | |
a53eb5e0 JS |
3257 | |
3258 | /** | |
3259 | * fc_vport_terminate - Admin App or LLDD requests termination of a vport | |
3260 | * @vport: fc_vport to be terminated | |
3261 | * | |
3262 | * Calls the LLDD vport_delete() function, then deallocates and removes | |
3263 | * the vport from the shost and object tree. | |
3264 | * | |
3265 | * Notes: | |
3266 | * This routine assumes no locks are held on entry. | |
eb44820c | 3267 | */ |
a53eb5e0 JS |
3268 | int |
3269 | fc_vport_terminate(struct fc_vport *vport) | |
3270 | { | |
3271 | struct Scsi_Host *shost = vport_to_shost(vport); | |
3272 | struct fc_host_attrs *fc_host = shost_to_fc_host(shost); | |
3273 | struct fc_internal *i = to_fc_internal(shost->transportt); | |
3274 | struct device *dev = &vport->dev; | |
3275 | unsigned long flags; | |
3276 | int stat; | |
3277 | ||
3278 | spin_lock_irqsave(shost->host_lock, flags); | |
3279 | if (vport->flags & FC_VPORT_CREATING) { | |
3280 | spin_unlock_irqrestore(shost->host_lock, flags); | |
3281 | return -EBUSY; | |
3282 | } | |
3283 | if (vport->flags & (FC_VPORT_DEL)) { | |
3284 | spin_unlock_irqrestore(shost->host_lock, flags); | |
3285 | return -EALREADY; | |
3286 | } | |
3287 | vport->flags |= FC_VPORT_DELETING; | |
3288 | spin_unlock_irqrestore(shost->host_lock, flags); | |
3289 | ||
3290 | if (i->f->vport_delete) | |
3291 | stat = i->f->vport_delete(vport); | |
3292 | else | |
3293 | stat = -ENOENT; | |
3294 | ||
3295 | spin_lock_irqsave(shost->host_lock, flags); | |
3296 | vport->flags &= ~FC_VPORT_DELETING; | |
3297 | if (!stat) { | |
3298 | vport->flags |= FC_VPORT_DELETED; | |
3299 | list_del(&vport->peers); | |
3300 | fc_host->npiv_vports_inuse--; | |
3301 | put_device(&shost->shost_gendev); /* for fc_host->vport list */ | |
3302 | } | |
3303 | spin_unlock_irqrestore(shost->host_lock, flags); | |
3304 | ||
3305 | if (stat) | |
3306 | return stat; | |
3307 | ||
3308 | if (dev->parent != &shost->shost_gendev) | |
71610f55 | 3309 | sysfs_remove_link(&shost->shost_gendev.kobj, dev_name(dev)); |
a53eb5e0 JS |
3310 | transport_remove_device(dev); |
3311 | device_del(dev); | |
3312 | transport_destroy_device(dev); | |
3313 | ||
3314 | /* | |
3315 | * Removing our self-reference should mean our | |
3316 | * release function gets called, which will drop the remaining | |
3317 | * parent reference and free the data structure. | |
3318 | */ | |
3319 | put_device(dev); /* for self-reference */ | |
3320 | ||
3321 | return 0; /* SUCCESS */ | |
3322 | } | |
3323 | EXPORT_SYMBOL(fc_vport_terminate); | |
3324 | ||
9ef3e4a4 JS |
3325 | /** |
3326 | * fc_vport_sched_delete - workq-based delete request for a vport | |
9ef3e4a4 | 3327 | * @work: vport to be deleted. |
eb44820c | 3328 | */ |
9ef3e4a4 JS |
3329 | static void |
3330 | fc_vport_sched_delete(struct work_struct *work) | |
3331 | { | |
3332 | struct fc_vport *vport = | |
3333 | container_of(work, struct fc_vport, vport_delete_work); | |
3334 | int stat; | |
3335 | ||
3336 | stat = fc_vport_terminate(vport); | |
3337 | if (stat) | |
3338 | dev_printk(KERN_ERR, vport->dev.parent, | |
3339 | "%s: %s could not be deleted created via " | |
cadbd4a5 | 3340 | "shost%d channel %d - error %d\n", __func__, |
71610f55 | 3341 | dev_name(&vport->dev), vport->shost->host_no, |
9ef3e4a4 JS |
3342 | vport->channel, stat); |
3343 | } | |
3344 | ||
a53eb5e0 | 3345 | |
9ef3e4a4 JS |
3346 | /* Original Author: Martin Hicks */ |
3347 | MODULE_AUTHOR("James Smart"); | |
1da177e4 LT |
3348 | MODULE_DESCRIPTION("FC Transport Attributes"); |
3349 | MODULE_LICENSE("GPL"); | |
3350 | ||
3351 | module_init(fc_transport_init); | |
3352 | module_exit(fc_transport_exit); |