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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)" }, | |
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 | ||
1b73c4bb JB |
536 | err = nlmsg_multicast(scsi_nl_sock, skb, 0, SCSI_NL_GRP_FC_EVENTS, |
537 | GFP_KERNEL); | |
84314fd4 JS |
538 | if (err && (err != -ESRCH)) /* filter no recipient errors */ |
539 | /* nlmsg_multicast already kfree_skb'd */ | |
540 | goto send_fail; | |
541 | ||
542 | return; | |
543 | ||
544 | send_fail_skb: | |
545 | kfree_skb(skb); | |
546 | send_fail: | |
547 | name = get_fc_host_event_code_name(event_code); | |
548 | printk(KERN_WARNING | |
549 | "%s: Dropped Event : host %d %s data 0x%08x - err %d\n", | |
cadbd4a5 | 550 | __func__, shost->host_no, |
84314fd4 JS |
551 | (name) ? name : "<unknown>", event_data, err); |
552 | return; | |
553 | } | |
554 | EXPORT_SYMBOL(fc_host_post_event); | |
555 | ||
556 | ||
557 | /** | |
eb44820c | 558 | * fc_host_post_vendor_event - called to post a vendor unique event on an fc_host |
84314fd4 JS |
559 | * @shost: host the event occurred on |
560 | * @event_number: fc event number obtained from get_fc_event_number() | |
561 | * @data_len: amount, in bytes, of vendor unique data | |
562 | * @data_buf: pointer to vendor unique data | |
eb44820c | 563 | * @vendor_id: Vendor id |
84314fd4 JS |
564 | * |
565 | * Notes: | |
566 | * This routine assumes no locks are held on entry. | |
eb44820c | 567 | */ |
84314fd4 JS |
568 | void |
569 | fc_host_post_vendor_event(struct Scsi_Host *shost, u32 event_number, | |
f14e2e29 | 570 | u32 data_len, char * data_buf, u64 vendor_id) |
84314fd4 JS |
571 | { |
572 | struct sk_buff *skb; | |
573 | struct nlmsghdr *nlh; | |
574 | struct fc_nl_event *event; | |
575 | u32 len, skblen; | |
576 | int err; | |
577 | ||
578 | if (!scsi_nl_sock) { | |
579 | err = -ENOENT; | |
580 | goto send_vendor_fail; | |
581 | } | |
582 | ||
583 | len = FC_NL_MSGALIGN(sizeof(*event) + data_len); | |
584 | skblen = NLMSG_SPACE(len); | |
585 | ||
586 | skb = alloc_skb(skblen, GFP_KERNEL); | |
587 | if (!skb) { | |
588 | err = -ENOBUFS; | |
589 | goto send_vendor_fail; | |
590 | } | |
591 | ||
592 | nlh = nlmsg_put(skb, 0, 0, SCSI_TRANSPORT_MSG, | |
593 | skblen - sizeof(*nlh), 0); | |
594 | if (!nlh) { | |
595 | err = -ENOBUFS; | |
596 | goto send_vendor_fail_skb; | |
597 | } | |
598 | event = NLMSG_DATA(nlh); | |
599 | ||
600 | INIT_SCSI_NL_HDR(&event->snlh, SCSI_NL_TRANSPORT_FC, | |
601 | FC_NL_ASYNC_EVENT, len); | |
602 | event->seconds = get_seconds(); | |
603 | event->vendor_id = vendor_id; | |
604 | event->host_no = shost->host_no; | |
605 | event->event_datalen = data_len; /* bytes */ | |
606 | event->event_num = event_number; | |
607 | event->event_code = FCH_EVT_VENDOR_UNIQUE; | |
608 | memcpy(&event->event_data, data_buf, data_len); | |
609 | ||
1b73c4bb JB |
610 | err = nlmsg_multicast(scsi_nl_sock, skb, 0, SCSI_NL_GRP_FC_EVENTS, |
611 | GFP_KERNEL); | |
84314fd4 JS |
612 | if (err && (err != -ESRCH)) /* filter no recipient errors */ |
613 | /* nlmsg_multicast already kfree_skb'd */ | |
614 | goto send_vendor_fail; | |
615 | ||
616 | return; | |
617 | ||
618 | send_vendor_fail_skb: | |
619 | kfree_skb(skb); | |
620 | send_vendor_fail: | |
621 | printk(KERN_WARNING | |
622 | "%s: Dropped Event : host %d vendor_unique - err %d\n", | |
cadbd4a5 | 623 | __func__, shost->host_no, err); |
84314fd4 JS |
624 | return; |
625 | } | |
626 | EXPORT_SYMBOL(fc_host_post_vendor_event); | |
627 | ||
628 | ||
1da177e4 LT |
629 | |
630 | static __init int fc_transport_init(void) | |
631 | { | |
84314fd4 JS |
632 | int error; |
633 | ||
634 | atomic_set(&fc_event_seq, 0); | |
635 | ||
636 | error = transport_class_register(&fc_host_class); | |
a53eb5e0 JS |
637 | if (error) |
638 | return error; | |
639 | error = transport_class_register(&fc_vport_class); | |
1da177e4 LT |
640 | if (error) |
641 | return error; | |
642 | error = transport_class_register(&fc_rport_class); | |
643 | if (error) | |
644 | return error; | |
645 | return transport_class_register(&fc_transport_class); | |
646 | } | |
647 | ||
648 | static void __exit fc_transport_exit(void) | |
649 | { | |
650 | transport_class_unregister(&fc_transport_class); | |
651 | transport_class_unregister(&fc_rport_class); | |
652 | transport_class_unregister(&fc_host_class); | |
a53eb5e0 | 653 | transport_class_unregister(&fc_vport_class); |
1da177e4 LT |
654 | } |
655 | ||
656 | /* | |
657 | * FC Remote Port Attribute Management | |
658 | */ | |
659 | ||
660 | #define fc_rport_show_function(field, format_string, sz, cast) \ | |
661 | static ssize_t \ | |
ee959b00 TJ |
662 | show_fc_rport_##field (struct device *dev, \ |
663 | struct device_attribute *attr, char *buf) \ | |
1da177e4 | 664 | { \ |
ee959b00 | 665 | struct fc_rport *rport = transport_class_to_rport(dev); \ |
1da177e4 LT |
666 | struct Scsi_Host *shost = rport_to_shost(rport); \ |
667 | struct fc_internal *i = to_fc_internal(shost->transportt); \ | |
19a7b4ae JSEC |
668 | if ((i->f->get_rport_##field) && \ |
669 | !((rport->port_state == FC_PORTSTATE_BLOCKED) || \ | |
42e33148 | 670 | (rport->port_state == FC_PORTSTATE_DELETED) || \ |
19a7b4ae | 671 | (rport->port_state == FC_PORTSTATE_NOTPRESENT))) \ |
1da177e4 LT |
672 | i->f->get_rport_##field(rport); \ |
673 | return snprintf(buf, sz, format_string, cast rport->field); \ | |
674 | } | |
675 | ||
676 | #define fc_rport_store_function(field) \ | |
677 | static ssize_t \ | |
ee959b00 TJ |
678 | store_fc_rport_##field(struct device *dev, \ |
679 | struct device_attribute *attr, \ | |
680 | const char *buf, size_t count) \ | |
1da177e4 LT |
681 | { \ |
682 | int val; \ | |
ee959b00 | 683 | struct fc_rport *rport = transport_class_to_rport(dev); \ |
1da177e4 LT |
684 | struct Scsi_Host *shost = rport_to_shost(rport); \ |
685 | struct fc_internal *i = to_fc_internal(shost->transportt); \ | |
0f29b966 | 686 | char *cp; \ |
19a7b4ae | 687 | if ((rport->port_state == FC_PORTSTATE_BLOCKED) || \ |
42e33148 | 688 | (rport->port_state == FC_PORTSTATE_DELETED) || \ |
19a7b4ae JSEC |
689 | (rport->port_state == FC_PORTSTATE_NOTPRESENT)) \ |
690 | return -EBUSY; \ | |
0f29b966 JS |
691 | val = simple_strtoul(buf, &cp, 0); \ |
692 | if (*cp && (*cp != '\n')) \ | |
693 | return -EINVAL; \ | |
1da177e4 LT |
694 | i->f->set_rport_##field(rport, val); \ |
695 | return count; \ | |
696 | } | |
697 | ||
698 | #define fc_rport_rd_attr(field, format_string, sz) \ | |
699 | fc_rport_show_function(field, format_string, sz, ) \ | |
ee959b00 | 700 | static FC_DEVICE_ATTR(rport, field, S_IRUGO, \ |
1da177e4 LT |
701 | show_fc_rport_##field, NULL) |
702 | ||
703 | #define fc_rport_rd_attr_cast(field, format_string, sz, cast) \ | |
704 | fc_rport_show_function(field, format_string, sz, (cast)) \ | |
ee959b00 | 705 | static FC_DEVICE_ATTR(rport, field, S_IRUGO, \ |
1da177e4 LT |
706 | show_fc_rport_##field, NULL) |
707 | ||
708 | #define fc_rport_rw_attr(field, format_string, sz) \ | |
709 | fc_rport_show_function(field, format_string, sz, ) \ | |
710 | fc_rport_store_function(field) \ | |
ee959b00 | 711 | static FC_DEVICE_ATTR(rport, field, S_IRUGO | S_IWUSR, \ |
1da177e4 LT |
712 | show_fc_rport_##field, \ |
713 | store_fc_rport_##field) | |
714 | ||
715 | ||
716 | #define fc_private_rport_show_function(field, format_string, sz, cast) \ | |
717 | static ssize_t \ | |
ee959b00 TJ |
718 | show_fc_rport_##field (struct device *dev, \ |
719 | struct device_attribute *attr, char *buf) \ | |
1da177e4 | 720 | { \ |
ee959b00 | 721 | struct fc_rport *rport = transport_class_to_rport(dev); \ |
1da177e4 LT |
722 | return snprintf(buf, sz, format_string, cast rport->field); \ |
723 | } | |
724 | ||
725 | #define fc_private_rport_rd_attr(field, format_string, sz) \ | |
726 | fc_private_rport_show_function(field, format_string, sz, ) \ | |
ee959b00 | 727 | static FC_DEVICE_ATTR(rport, field, S_IRUGO, \ |
1da177e4 LT |
728 | show_fc_rport_##field, NULL) |
729 | ||
730 | #define fc_private_rport_rd_attr_cast(field, format_string, sz, cast) \ | |
731 | fc_private_rport_show_function(field, format_string, sz, (cast)) \ | |
ee959b00 | 732 | static FC_DEVICE_ATTR(rport, field, S_IRUGO, \ |
1da177e4 LT |
733 | show_fc_rport_##field, NULL) |
734 | ||
735 | ||
736 | #define fc_private_rport_rd_enum_attr(title, maxlen) \ | |
737 | static ssize_t \ | |
ee959b00 TJ |
738 | show_fc_rport_##title (struct device *dev, \ |
739 | struct device_attribute *attr, char *buf) \ | |
1da177e4 | 740 | { \ |
ee959b00 | 741 | struct fc_rport *rport = transport_class_to_rport(dev); \ |
1da177e4 LT |
742 | const char *name; \ |
743 | name = get_fc_##title##_name(rport->title); \ | |
744 | if (!name) \ | |
745 | return -EINVAL; \ | |
746 | return snprintf(buf, maxlen, "%s\n", name); \ | |
747 | } \ | |
ee959b00 | 748 | static FC_DEVICE_ATTR(rport, title, S_IRUGO, \ |
1da177e4 LT |
749 | show_fc_rport_##title, NULL) |
750 | ||
751 | ||
752 | #define SETUP_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 | if (i->f->show_rport_##field) \ | |
758 | count++ | |
759 | ||
760 | #define SETUP_PRIVATE_RPORT_ATTRIBUTE_RD(field) \ | |
ee959b00 | 761 | i->private_rport_attrs[count] = device_attr_rport_##field; \ |
1da177e4 LT |
762 | i->private_rport_attrs[count].attr.mode = S_IRUGO; \ |
763 | i->private_rport_attrs[count].store = NULL; \ | |
764 | i->rport_attrs[count] = &i->private_rport_attrs[count]; \ | |
765 | count++ | |
766 | ||
767 | #define SETUP_RPORT_ATTRIBUTE_RW(field) \ | |
ee959b00 | 768 | i->private_rport_attrs[count] = device_attr_rport_##field; \ |
1da177e4 LT |
769 | if (!i->f->set_rport_##field) { \ |
770 | i->private_rport_attrs[count].attr.mode = S_IRUGO; \ | |
771 | i->private_rport_attrs[count].store = NULL; \ | |
772 | } \ | |
773 | i->rport_attrs[count] = &i->private_rport_attrs[count]; \ | |
774 | if (i->f->show_rport_##field) \ | |
775 | count++ | |
776 | ||
0f29b966 JS |
777 | #define SETUP_PRIVATE_RPORT_ATTRIBUTE_RW(field) \ |
778 | { \ | |
ee959b00 | 779 | i->private_rport_attrs[count] = device_attr_rport_##field; \ |
0f29b966 JS |
780 | i->rport_attrs[count] = &i->private_rport_attrs[count]; \ |
781 | count++; \ | |
782 | } | |
783 | ||
1da177e4 LT |
784 | |
785 | /* The FC Transport Remote Port Attributes: */ | |
786 | ||
787 | /* Fixed Remote Port Attributes */ | |
788 | ||
789 | fc_private_rport_rd_attr(maxframe_size, "%u bytes\n", 20); | |
790 | ||
791 | static ssize_t | |
ee959b00 TJ |
792 | show_fc_rport_supported_classes (struct device *dev, |
793 | struct device_attribute *attr, char *buf) | |
1da177e4 | 794 | { |
ee959b00 | 795 | struct fc_rport *rport = transport_class_to_rport(dev); |
1da177e4 LT |
796 | if (rport->supported_classes == FC_COS_UNSPECIFIED) |
797 | return snprintf(buf, 20, "unspecified\n"); | |
798 | return get_fc_cos_names(rport->supported_classes, buf); | |
799 | } | |
ee959b00 | 800 | static FC_DEVICE_ATTR(rport, supported_classes, S_IRUGO, |
1da177e4 LT |
801 | show_fc_rport_supported_classes, NULL); |
802 | ||
803 | /* Dynamic Remote Port Attributes */ | |
804 | ||
19a7b4ae JSEC |
805 | /* |
806 | * dev_loss_tmo attribute | |
807 | */ | |
808 | fc_rport_show_function(dev_loss_tmo, "%d\n", 20, ) | |
809 | static ssize_t | |
ee959b00 TJ |
810 | store_fc_rport_dev_loss_tmo(struct device *dev, struct device_attribute *attr, |
811 | const char *buf, size_t count) | |
19a7b4ae JSEC |
812 | { |
813 | int val; | |
ee959b00 | 814 | struct fc_rport *rport = transport_class_to_rport(dev); |
19a7b4ae JSEC |
815 | struct Scsi_Host *shost = rport_to_shost(rport); |
816 | struct fc_internal *i = to_fc_internal(shost->transportt); | |
0f29b966 | 817 | char *cp; |
19a7b4ae | 818 | if ((rport->port_state == FC_PORTSTATE_BLOCKED) || |
42e33148 | 819 | (rport->port_state == FC_PORTSTATE_DELETED) || |
19a7b4ae JSEC |
820 | (rport->port_state == FC_PORTSTATE_NOTPRESENT)) |
821 | return -EBUSY; | |
0f29b966 JS |
822 | val = simple_strtoul(buf, &cp, 0); |
823 | if ((*cp && (*cp != '\n')) || | |
824 | (val < 0) || (val > SCSI_DEVICE_BLOCK_MAX_TIMEOUT)) | |
19a7b4ae JSEC |
825 | return -EINVAL; |
826 | i->f->set_rport_dev_loss_tmo(rport, val); | |
827 | return count; | |
828 | } | |
ee959b00 | 829 | static FC_DEVICE_ATTR(rport, dev_loss_tmo, S_IRUGO | S_IWUSR, |
19a7b4ae | 830 | show_fc_rport_dev_loss_tmo, store_fc_rport_dev_loss_tmo); |
1da177e4 LT |
831 | |
832 | ||
833 | /* Private Remote Port Attributes */ | |
834 | ||
835 | fc_private_rport_rd_attr_cast(node_name, "0x%llx\n", 20, unsigned long long); | |
836 | fc_private_rport_rd_attr_cast(port_name, "0x%llx\n", 20, unsigned long long); | |
837 | fc_private_rport_rd_attr(port_id, "0x%06x\n", 20); | |
838 | ||
839 | static ssize_t | |
ee959b00 TJ |
840 | show_fc_rport_roles (struct device *dev, struct device_attribute *attr, |
841 | char *buf) | |
1da177e4 | 842 | { |
ee959b00 | 843 | struct fc_rport *rport = transport_class_to_rport(dev); |
1da177e4 LT |
844 | |
845 | /* identify any roles that are port_id specific */ | |
846 | if ((rport->port_id != -1) && | |
847 | (rport->port_id & FC_WELLKNOWN_PORTID_MASK) == | |
848 | FC_WELLKNOWN_PORTID_MASK) { | |
849 | switch (rport->port_id & FC_WELLKNOWN_ROLE_MASK) { | |
850 | case FC_FPORT_PORTID: | |
851 | return snprintf(buf, 30, "Fabric Port\n"); | |
852 | case FC_FABCTLR_PORTID: | |
853 | return snprintf(buf, 30, "Fabric Controller\n"); | |
854 | case FC_DIRSRVR_PORTID: | |
855 | return snprintf(buf, 30, "Directory Server\n"); | |
856 | case FC_TIMESRVR_PORTID: | |
857 | return snprintf(buf, 30, "Time Server\n"); | |
858 | case FC_MGMTSRVR_PORTID: | |
859 | return snprintf(buf, 30, "Management Server\n"); | |
860 | default: | |
861 | return snprintf(buf, 30, "Unknown Fabric Entity\n"); | |
862 | } | |
863 | } else { | |
a53eb5e0 | 864 | if (rport->roles == FC_PORT_ROLE_UNKNOWN) |
1da177e4 | 865 | return snprintf(buf, 20, "unknown\n"); |
a53eb5e0 | 866 | return get_fc_port_roles_names(rport->roles, buf); |
1da177e4 LT |
867 | } |
868 | } | |
ee959b00 | 869 | static FC_DEVICE_ATTR(rport, roles, S_IRUGO, |
1da177e4 LT |
870 | show_fc_rport_roles, NULL); |
871 | ||
872 | fc_private_rport_rd_enum_attr(port_state, FC_PORTSTATE_MAX_NAMELEN); | |
873 | fc_private_rport_rd_attr(scsi_target_id, "%d\n", 20); | |
874 | ||
0f29b966 JS |
875 | /* |
876 | * fast_io_fail_tmo attribute | |
877 | */ | |
878 | static ssize_t | |
ee959b00 TJ |
879 | show_fc_rport_fast_io_fail_tmo (struct device *dev, |
880 | struct device_attribute *attr, char *buf) | |
0f29b966 | 881 | { |
ee959b00 | 882 | struct fc_rport *rport = transport_class_to_rport(dev); |
0f29b966 JS |
883 | |
884 | if (rport->fast_io_fail_tmo == -1) | |
885 | return snprintf(buf, 5, "off\n"); | |
886 | return snprintf(buf, 20, "%d\n", rport->fast_io_fail_tmo); | |
887 | } | |
888 | ||
889 | static ssize_t | |
ee959b00 TJ |
890 | store_fc_rport_fast_io_fail_tmo(struct device *dev, |
891 | struct device_attribute *attr, const char *buf, | |
892 | size_t count) | |
0f29b966 JS |
893 | { |
894 | int val; | |
895 | char *cp; | |
ee959b00 | 896 | struct fc_rport *rport = transport_class_to_rport(dev); |
0f29b966 JS |
897 | |
898 | if ((rport->port_state == FC_PORTSTATE_BLOCKED) || | |
899 | (rport->port_state == FC_PORTSTATE_DELETED) || | |
900 | (rport->port_state == FC_PORTSTATE_NOTPRESENT)) | |
901 | return -EBUSY; | |
902 | if (strncmp(buf, "off", 3) == 0) | |
903 | rport->fast_io_fail_tmo = -1; | |
904 | else { | |
905 | val = simple_strtoul(buf, &cp, 0); | |
906 | if ((*cp && (*cp != '\n')) || | |
907 | (val < 0) || (val >= rport->dev_loss_tmo)) | |
908 | return -EINVAL; | |
909 | rport->fast_io_fail_tmo = val; | |
910 | } | |
911 | return count; | |
912 | } | |
ee959b00 | 913 | static FC_DEVICE_ATTR(rport, fast_io_fail_tmo, S_IRUGO | S_IWUSR, |
0f29b966 | 914 | show_fc_rport_fast_io_fail_tmo, store_fc_rport_fast_io_fail_tmo); |
1da177e4 LT |
915 | |
916 | ||
917 | /* | |
918 | * FC SCSI Target Attribute Management | |
919 | */ | |
920 | ||
921 | /* | |
922 | * Note: in the target show function we recognize when the remote | |
a53eb5e0 | 923 | * port is in the heirarchy and do not allow the driver to get |
1da177e4 LT |
924 | * involved in sysfs functions. The driver only gets involved if |
925 | * it's the "old" style that doesn't use rports. | |
926 | */ | |
927 | #define fc_starget_show_function(field, format_string, sz, cast) \ | |
928 | static ssize_t \ | |
ee959b00 TJ |
929 | show_fc_starget_##field (struct device *dev, \ |
930 | struct device_attribute *attr, char *buf) \ | |
1da177e4 | 931 | { \ |
ee959b00 | 932 | struct scsi_target *starget = transport_class_to_starget(dev); \ |
1da177e4 LT |
933 | struct Scsi_Host *shost = dev_to_shost(starget->dev.parent); \ |
934 | struct fc_internal *i = to_fc_internal(shost->transportt); \ | |
935 | struct fc_rport *rport = starget_to_rport(starget); \ | |
936 | if (rport) \ | |
937 | fc_starget_##field(starget) = rport->field; \ | |
938 | else if (i->f->get_starget_##field) \ | |
939 | i->f->get_starget_##field(starget); \ | |
940 | return snprintf(buf, sz, format_string, \ | |
941 | cast fc_starget_##field(starget)); \ | |
942 | } | |
943 | ||
944 | #define fc_starget_rd_attr(field, format_string, sz) \ | |
945 | fc_starget_show_function(field, format_string, sz, ) \ | |
ee959b00 | 946 | static FC_DEVICE_ATTR(starget, field, S_IRUGO, \ |
1da177e4 LT |
947 | show_fc_starget_##field, NULL) |
948 | ||
949 | #define fc_starget_rd_attr_cast(field, format_string, sz, cast) \ | |
950 | fc_starget_show_function(field, format_string, sz, (cast)) \ | |
ee959b00 | 951 | static FC_DEVICE_ATTR(starget, field, S_IRUGO, \ |
1da177e4 LT |
952 | show_fc_starget_##field, NULL) |
953 | ||
954 | #define SETUP_STARGET_ATTRIBUTE_RD(field) \ | |
ee959b00 | 955 | i->private_starget_attrs[count] = device_attr_starget_##field; \ |
1da177e4 LT |
956 | i->private_starget_attrs[count].attr.mode = S_IRUGO; \ |
957 | i->private_starget_attrs[count].store = NULL; \ | |
958 | i->starget_attrs[count] = &i->private_starget_attrs[count]; \ | |
959 | if (i->f->show_starget_##field) \ | |
960 | count++ | |
961 | ||
962 | #define SETUP_STARGET_ATTRIBUTE_RW(field) \ | |
ee959b00 | 963 | i->private_starget_attrs[count] = device_attr_starget_##field; \ |
1da177e4 LT |
964 | if (!i->f->set_starget_##field) { \ |
965 | i->private_starget_attrs[count].attr.mode = S_IRUGO; \ | |
966 | i->private_starget_attrs[count].store = NULL; \ | |
967 | } \ | |
968 | i->starget_attrs[count] = &i->private_starget_attrs[count]; \ | |
969 | if (i->f->show_starget_##field) \ | |
970 | count++ | |
971 | ||
972 | /* The FC Transport SCSI Target Attributes: */ | |
973 | fc_starget_rd_attr_cast(node_name, "0x%llx\n", 20, unsigned long long); | |
974 | fc_starget_rd_attr_cast(port_name, "0x%llx\n", 20, unsigned long long); | |
975 | fc_starget_rd_attr(port_id, "0x%06x\n", 20); | |
976 | ||
977 | ||
a53eb5e0 JS |
978 | /* |
979 | * FC Virtual Port Attribute Management | |
980 | */ | |
981 | ||
982 | #define fc_vport_show_function(field, format_string, sz, cast) \ | |
983 | static ssize_t \ | |
ee959b00 TJ |
984 | show_fc_vport_##field (struct device *dev, \ |
985 | struct device_attribute *attr, char *buf) \ | |
a53eb5e0 | 986 | { \ |
ee959b00 | 987 | struct fc_vport *vport = transport_class_to_vport(dev); \ |
a53eb5e0 JS |
988 | struct Scsi_Host *shost = vport_to_shost(vport); \ |
989 | struct fc_internal *i = to_fc_internal(shost->transportt); \ | |
990 | if ((i->f->get_vport_##field) && \ | |
991 | !(vport->flags & (FC_VPORT_DEL | FC_VPORT_CREATING))) \ | |
992 | i->f->get_vport_##field(vport); \ | |
993 | return snprintf(buf, sz, format_string, cast vport->field); \ | |
994 | } | |
995 | ||
996 | #define fc_vport_store_function(field) \ | |
997 | static ssize_t \ | |
ee959b00 TJ |
998 | store_fc_vport_##field(struct device *dev, \ |
999 | struct device_attribute *attr, \ | |
1000 | const char *buf, size_t count) \ | |
a53eb5e0 JS |
1001 | { \ |
1002 | int val; \ | |
ee959b00 | 1003 | struct fc_vport *vport = transport_class_to_vport(dev); \ |
a53eb5e0 JS |
1004 | struct Scsi_Host *shost = vport_to_shost(vport); \ |
1005 | struct fc_internal *i = to_fc_internal(shost->transportt); \ | |
1006 | char *cp; \ | |
1007 | if (vport->flags & (FC_VPORT_DEL | FC_VPORT_CREATING)) \ | |
1008 | return -EBUSY; \ | |
1009 | val = simple_strtoul(buf, &cp, 0); \ | |
1010 | if (*cp && (*cp != '\n')) \ | |
1011 | return -EINVAL; \ | |
1012 | i->f->set_vport_##field(vport, val); \ | |
1013 | return count; \ | |
1014 | } | |
1015 | ||
1016 | #define fc_vport_store_str_function(field, slen) \ | |
1017 | static ssize_t \ | |
ee959b00 TJ |
1018 | store_fc_vport_##field(struct device *dev, \ |
1019 | struct device_attribute *attr, \ | |
1020 | const char *buf, size_t count) \ | |
a53eb5e0 | 1021 | { \ |
ee959b00 | 1022 | struct fc_vport *vport = transport_class_to_vport(dev); \ |
a53eb5e0 JS |
1023 | struct Scsi_Host *shost = vport_to_shost(vport); \ |
1024 | struct fc_internal *i = to_fc_internal(shost->transportt); \ | |
1025 | unsigned int cnt=count; \ | |
1026 | \ | |
1027 | /* count may include a LF at end of string */ \ | |
1028 | if (buf[cnt-1] == '\n') \ | |
1029 | cnt--; \ | |
1030 | if (cnt > ((slen) - 1)) \ | |
1031 | return -EINVAL; \ | |
1032 | memcpy(vport->field, buf, cnt); \ | |
1033 | i->f->set_vport_##field(vport); \ | |
1034 | return count; \ | |
1035 | } | |
1036 | ||
1037 | #define fc_vport_rd_attr(field, format_string, sz) \ | |
1038 | fc_vport_show_function(field, format_string, sz, ) \ | |
ee959b00 | 1039 | static FC_DEVICE_ATTR(vport, field, S_IRUGO, \ |
a53eb5e0 JS |
1040 | show_fc_vport_##field, NULL) |
1041 | ||
1042 | #define fc_vport_rd_attr_cast(field, format_string, sz, cast) \ | |
1043 | fc_vport_show_function(field, format_string, sz, (cast)) \ | |
ee959b00 | 1044 | static FC_DEVICE_ATTR(vport, field, S_IRUGO, \ |
a53eb5e0 JS |
1045 | show_fc_vport_##field, NULL) |
1046 | ||
1047 | #define fc_vport_rw_attr(field, format_string, sz) \ | |
1048 | fc_vport_show_function(field, format_string, sz, ) \ | |
1049 | fc_vport_store_function(field) \ | |
ee959b00 | 1050 | static FC_DEVICE_ATTR(vport, field, S_IRUGO | S_IWUSR, \ |
a53eb5e0 JS |
1051 | show_fc_vport_##field, \ |
1052 | store_fc_vport_##field) | |
1053 | ||
1054 | #define fc_private_vport_show_function(field, format_string, sz, cast) \ | |
1055 | static ssize_t \ | |
ee959b00 TJ |
1056 | show_fc_vport_##field (struct device *dev, \ |
1057 | struct device_attribute *attr, char *buf) \ | |
a53eb5e0 | 1058 | { \ |
ee959b00 | 1059 | struct fc_vport *vport = transport_class_to_vport(dev); \ |
a53eb5e0 JS |
1060 | return snprintf(buf, sz, format_string, cast vport->field); \ |
1061 | } | |
1062 | ||
1063 | #define fc_private_vport_store_u32_function(field) \ | |
1064 | static ssize_t \ | |
ee959b00 TJ |
1065 | store_fc_vport_##field(struct device *dev, \ |
1066 | struct device_attribute *attr, \ | |
1067 | const char *buf, size_t count) \ | |
a53eb5e0 JS |
1068 | { \ |
1069 | u32 val; \ | |
ee959b00 | 1070 | struct fc_vport *vport = transport_class_to_vport(dev); \ |
a53eb5e0 JS |
1071 | char *cp; \ |
1072 | if (vport->flags & (FC_VPORT_DEL | FC_VPORT_CREATING)) \ | |
1073 | return -EBUSY; \ | |
1074 | val = simple_strtoul(buf, &cp, 0); \ | |
1075 | if (*cp && (*cp != '\n')) \ | |
1076 | return -EINVAL; \ | |
1077 | vport->field = val; \ | |
1078 | return count; \ | |
1079 | } | |
1080 | ||
1081 | ||
1082 | #define fc_private_vport_rd_attr(field, format_string, sz) \ | |
1083 | fc_private_vport_show_function(field, format_string, sz, ) \ | |
ee959b00 | 1084 | static FC_DEVICE_ATTR(vport, field, S_IRUGO, \ |
a53eb5e0 JS |
1085 | show_fc_vport_##field, NULL) |
1086 | ||
1087 | #define fc_private_vport_rd_attr_cast(field, format_string, sz, cast) \ | |
1088 | fc_private_vport_show_function(field, format_string, sz, (cast)) \ | |
ee959b00 | 1089 | static FC_DEVICE_ATTR(vport, field, S_IRUGO, \ |
a53eb5e0 JS |
1090 | show_fc_vport_##field, NULL) |
1091 | ||
1092 | #define fc_private_vport_rw_u32_attr(field, format_string, sz) \ | |
1093 | fc_private_vport_show_function(field, format_string, sz, ) \ | |
1094 | fc_private_vport_store_u32_function(field) \ | |
ee959b00 | 1095 | static FC_DEVICE_ATTR(vport, field, S_IRUGO | S_IWUSR, \ |
a53eb5e0 JS |
1096 | show_fc_vport_##field, \ |
1097 | store_fc_vport_##field) | |
1098 | ||
1099 | ||
1100 | #define fc_private_vport_rd_enum_attr(title, maxlen) \ | |
1101 | static ssize_t \ | |
ee959b00 TJ |
1102 | show_fc_vport_##title (struct device *dev, \ |
1103 | struct device_attribute *attr, \ | |
1104 | char *buf) \ | |
a53eb5e0 | 1105 | { \ |
ee959b00 | 1106 | struct fc_vport *vport = transport_class_to_vport(dev); \ |
a53eb5e0 JS |
1107 | const char *name; \ |
1108 | name = get_fc_##title##_name(vport->title); \ | |
1109 | if (!name) \ | |
1110 | return -EINVAL; \ | |
1111 | return snprintf(buf, maxlen, "%s\n", name); \ | |
1112 | } \ | |
ee959b00 | 1113 | static FC_DEVICE_ATTR(vport, title, S_IRUGO, \ |
a53eb5e0 JS |
1114 | show_fc_vport_##title, NULL) |
1115 | ||
1116 | ||
1117 | #define SETUP_VPORT_ATTRIBUTE_RD(field) \ | |
ee959b00 | 1118 | i->private_vport_attrs[count] = device_attr_vport_##field; \ |
a53eb5e0 JS |
1119 | i->private_vport_attrs[count].attr.mode = S_IRUGO; \ |
1120 | i->private_vport_attrs[count].store = NULL; \ | |
1121 | i->vport_attrs[count] = &i->private_vport_attrs[count]; \ | |
1122 | if (i->f->get_##field) \ | |
1123 | count++ | |
1124 | /* NOTE: Above MACRO differs: checks function not show bit */ | |
1125 | ||
1126 | #define SETUP_PRIVATE_VPORT_ATTRIBUTE_RD(field) \ | |
ee959b00 | 1127 | i->private_vport_attrs[count] = device_attr_vport_##field; \ |
a53eb5e0 JS |
1128 | i->private_vport_attrs[count].attr.mode = S_IRUGO; \ |
1129 | i->private_vport_attrs[count].store = NULL; \ | |
1130 | i->vport_attrs[count] = &i->private_vport_attrs[count]; \ | |
1131 | count++ | |
1132 | ||
1133 | #define SETUP_VPORT_ATTRIBUTE_WR(field) \ | |
ee959b00 | 1134 | i->private_vport_attrs[count] = device_attr_vport_##field; \ |
a53eb5e0 JS |
1135 | i->vport_attrs[count] = &i->private_vport_attrs[count]; \ |
1136 | if (i->f->field) \ | |
1137 | count++ | |
1138 | /* NOTE: Above MACRO differs: checks function */ | |
1139 | ||
1140 | #define SETUP_VPORT_ATTRIBUTE_RW(field) \ | |
ee959b00 | 1141 | i->private_vport_attrs[count] = device_attr_vport_##field; \ |
a53eb5e0 JS |
1142 | if (!i->f->set_vport_##field) { \ |
1143 | i->private_vport_attrs[count].attr.mode = S_IRUGO; \ | |
1144 | i->private_vport_attrs[count].store = NULL; \ | |
1145 | } \ | |
1146 | i->vport_attrs[count] = &i->private_vport_attrs[count]; \ | |
1147 | count++ | |
1148 | /* NOTE: Above MACRO differs: does not check show bit */ | |
1149 | ||
1150 | #define SETUP_PRIVATE_VPORT_ATTRIBUTE_RW(field) \ | |
1151 | { \ | |
ee959b00 | 1152 | i->private_vport_attrs[count] = device_attr_vport_##field; \ |
a53eb5e0 JS |
1153 | i->vport_attrs[count] = &i->private_vport_attrs[count]; \ |
1154 | count++; \ | |
1155 | } | |
1156 | ||
1157 | ||
1158 | /* The FC Transport Virtual Port Attributes: */ | |
1159 | ||
1160 | /* Fixed Virtual Port Attributes */ | |
1161 | ||
1162 | /* Dynamic Virtual Port Attributes */ | |
1163 | ||
1164 | /* Private Virtual Port Attributes */ | |
1165 | ||
1166 | fc_private_vport_rd_enum_attr(vport_state, FC_VPORTSTATE_MAX_NAMELEN); | |
1167 | fc_private_vport_rd_enum_attr(vport_last_state, FC_VPORTSTATE_MAX_NAMELEN); | |
1168 | fc_private_vport_rd_attr_cast(node_name, "0x%llx\n", 20, unsigned long long); | |
1169 | fc_private_vport_rd_attr_cast(port_name, "0x%llx\n", 20, unsigned long long); | |
1170 | ||
1171 | static ssize_t | |
ee959b00 TJ |
1172 | show_fc_vport_roles (struct device *dev, struct device_attribute *attr, |
1173 | char *buf) | |
a53eb5e0 | 1174 | { |
ee959b00 | 1175 | struct fc_vport *vport = transport_class_to_vport(dev); |
a53eb5e0 JS |
1176 | |
1177 | if (vport->roles == FC_PORT_ROLE_UNKNOWN) | |
1178 | return snprintf(buf, 20, "unknown\n"); | |
1179 | return get_fc_port_roles_names(vport->roles, buf); | |
1180 | } | |
ee959b00 | 1181 | static FC_DEVICE_ATTR(vport, roles, S_IRUGO, show_fc_vport_roles, NULL); |
a53eb5e0 JS |
1182 | |
1183 | fc_private_vport_rd_enum_attr(vport_type, FC_PORTTYPE_MAX_NAMELEN); | |
1184 | ||
1185 | fc_private_vport_show_function(symbolic_name, "%s\n", | |
1186 | FC_VPORT_SYMBOLIC_NAMELEN + 1, ) | |
1187 | fc_vport_store_str_function(symbolic_name, FC_VPORT_SYMBOLIC_NAMELEN) | |
ee959b00 | 1188 | static FC_DEVICE_ATTR(vport, symbolic_name, S_IRUGO | S_IWUSR, |
a53eb5e0 JS |
1189 | show_fc_vport_symbolic_name, store_fc_vport_symbolic_name); |
1190 | ||
1191 | static ssize_t | |
ee959b00 TJ |
1192 | store_fc_vport_delete(struct device *dev, struct device_attribute *attr, |
1193 | const char *buf, size_t count) | |
a53eb5e0 | 1194 | { |
ee959b00 | 1195 | struct fc_vport *vport = transport_class_to_vport(dev); |
9ef3e4a4 | 1196 | struct Scsi_Host *shost = vport_to_shost(vport); |
a53eb5e0 | 1197 | |
9ef3e4a4 | 1198 | fc_queue_work(shost, &vport->vport_delete_work); |
a53eb5e0 JS |
1199 | return count; |
1200 | } | |
ee959b00 | 1201 | static FC_DEVICE_ATTR(vport, vport_delete, S_IWUSR, |
a53eb5e0 JS |
1202 | NULL, store_fc_vport_delete); |
1203 | ||
1204 | ||
1205 | /* | |
1206 | * Enable/Disable vport | |
1207 | * Write "1" to disable, write "0" to enable | |
1208 | */ | |
1209 | static ssize_t | |
ee959b00 TJ |
1210 | store_fc_vport_disable(struct device *dev, struct device_attribute *attr, |
1211 | const char *buf, | |
a53eb5e0 JS |
1212 | size_t count) |
1213 | { | |
ee959b00 | 1214 | struct fc_vport *vport = transport_class_to_vport(dev); |
a53eb5e0 JS |
1215 | struct Scsi_Host *shost = vport_to_shost(vport); |
1216 | struct fc_internal *i = to_fc_internal(shost->transportt); | |
1217 | int stat; | |
1218 | ||
1219 | if (vport->flags & (FC_VPORT_DEL | FC_VPORT_CREATING)) | |
1220 | return -EBUSY; | |
1221 | ||
1222 | if (*buf == '0') { | |
1223 | if (vport->vport_state != FC_VPORT_DISABLED) | |
1224 | return -EALREADY; | |
1225 | } else if (*buf == '1') { | |
1226 | if (vport->vport_state == FC_VPORT_DISABLED) | |
1227 | return -EALREADY; | |
1228 | } else | |
1229 | return -EINVAL; | |
1230 | ||
1231 | stat = i->f->vport_disable(vport, ((*buf == '0') ? false : true)); | |
1232 | return stat ? stat : count; | |
1233 | } | |
ee959b00 | 1234 | static FC_DEVICE_ATTR(vport, vport_disable, S_IWUSR, |
a53eb5e0 JS |
1235 | NULL, store_fc_vport_disable); |
1236 | ||
1237 | ||
1da177e4 LT |
1238 | /* |
1239 | * Host Attribute Management | |
1240 | */ | |
1241 | ||
1242 | #define fc_host_show_function(field, format_string, sz, cast) \ | |
1243 | static ssize_t \ | |
ee959b00 TJ |
1244 | show_fc_host_##field (struct device *dev, \ |
1245 | struct device_attribute *attr, char *buf) \ | |
1da177e4 | 1246 | { \ |
ee959b00 | 1247 | struct Scsi_Host *shost = transport_class_to_shost(dev); \ |
1da177e4 LT |
1248 | struct fc_internal *i = to_fc_internal(shost->transportt); \ |
1249 | if (i->f->get_host_##field) \ | |
1250 | i->f->get_host_##field(shost); \ | |
1251 | return snprintf(buf, sz, format_string, cast fc_host_##field(shost)); \ | |
1252 | } | |
1253 | ||
1254 | #define fc_host_store_function(field) \ | |
1255 | static ssize_t \ | |
ee959b00 TJ |
1256 | store_fc_host_##field(struct device *dev, \ |
1257 | struct device_attribute *attr, \ | |
1258 | const char *buf, size_t count) \ | |
1da177e4 LT |
1259 | { \ |
1260 | int val; \ | |
ee959b00 | 1261 | struct Scsi_Host *shost = transport_class_to_shost(dev); \ |
1da177e4 | 1262 | struct fc_internal *i = to_fc_internal(shost->transportt); \ |
0f29b966 | 1263 | char *cp; \ |
1da177e4 | 1264 | \ |
0f29b966 JS |
1265 | val = simple_strtoul(buf, &cp, 0); \ |
1266 | if (*cp && (*cp != '\n')) \ | |
1267 | return -EINVAL; \ | |
1da177e4 LT |
1268 | i->f->set_host_##field(shost, val); \ |
1269 | return count; \ | |
1270 | } | |
1271 | ||
b8d08210 JS |
1272 | #define fc_host_store_str_function(field, slen) \ |
1273 | static ssize_t \ | |
ee959b00 TJ |
1274 | store_fc_host_##field(struct device *dev, \ |
1275 | struct device_attribute *attr, \ | |
1276 | const char *buf, size_t count) \ | |
b8d08210 | 1277 | { \ |
ee959b00 | 1278 | struct Scsi_Host *shost = transport_class_to_shost(dev); \ |
b8d08210 JS |
1279 | struct fc_internal *i = to_fc_internal(shost->transportt); \ |
1280 | unsigned int cnt=count; \ | |
1281 | \ | |
1282 | /* count may include a LF at end of string */ \ | |
1283 | if (buf[cnt-1] == '\n') \ | |
1284 | cnt--; \ | |
1285 | if (cnt > ((slen) - 1)) \ | |
1286 | return -EINVAL; \ | |
1287 | memcpy(fc_host_##field(shost), buf, cnt); \ | |
1288 | i->f->set_host_##field(shost); \ | |
1289 | return count; \ | |
1290 | } | |
1291 | ||
1da177e4 LT |
1292 | #define fc_host_rd_attr(field, format_string, sz) \ |
1293 | fc_host_show_function(field, format_string, sz, ) \ | |
ee959b00 | 1294 | static FC_DEVICE_ATTR(host, field, S_IRUGO, \ |
1da177e4 LT |
1295 | show_fc_host_##field, NULL) |
1296 | ||
1297 | #define fc_host_rd_attr_cast(field, format_string, sz, cast) \ | |
1298 | fc_host_show_function(field, format_string, sz, (cast)) \ | |
ee959b00 | 1299 | static FC_DEVICE_ATTR(host, field, S_IRUGO, \ |
1da177e4 LT |
1300 | show_fc_host_##field, NULL) |
1301 | ||
1302 | #define fc_host_rw_attr(field, format_string, sz) \ | |
1303 | fc_host_show_function(field, format_string, sz, ) \ | |
1304 | fc_host_store_function(field) \ | |
ee959b00 | 1305 | static FC_DEVICE_ATTR(host, field, S_IRUGO | S_IWUSR, \ |
1da177e4 LT |
1306 | show_fc_host_##field, \ |
1307 | store_fc_host_##field) | |
1308 | ||
1309 | #define fc_host_rd_enum_attr(title, maxlen) \ | |
1310 | static ssize_t \ | |
ee959b00 TJ |
1311 | show_fc_host_##title (struct device *dev, \ |
1312 | struct device_attribute *attr, char *buf) \ | |
1da177e4 | 1313 | { \ |
ee959b00 | 1314 | struct Scsi_Host *shost = transport_class_to_shost(dev); \ |
1da177e4 LT |
1315 | struct fc_internal *i = to_fc_internal(shost->transportt); \ |
1316 | const char *name; \ | |
1317 | if (i->f->get_host_##title) \ | |
1318 | i->f->get_host_##title(shost); \ | |
1319 | name = get_fc_##title##_name(fc_host_##title(shost)); \ | |
1320 | if (!name) \ | |
1321 | return -EINVAL; \ | |
1322 | return snprintf(buf, maxlen, "%s\n", name); \ | |
1323 | } \ | |
ee959b00 | 1324 | static FC_DEVICE_ATTR(host, title, S_IRUGO, show_fc_host_##title, NULL) |
1da177e4 LT |
1325 | |
1326 | #define SETUP_HOST_ATTRIBUTE_RD(field) \ | |
ee959b00 | 1327 | i->private_host_attrs[count] = device_attr_host_##field; \ |
1da177e4 LT |
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 | if (i->f->show_host_##field) \ | |
1332 | count++ | |
1333 | ||
a53eb5e0 | 1334 | #define SETUP_HOST_ATTRIBUTE_RD_NS(field) \ |
ee959b00 | 1335 | i->private_host_attrs[count] = device_attr_host_##field; \ |
a53eb5e0 JS |
1336 | i->private_host_attrs[count].attr.mode = S_IRUGO; \ |
1337 | i->private_host_attrs[count].store = NULL; \ | |
1338 | i->host_attrs[count] = &i->private_host_attrs[count]; \ | |
1339 | count++ | |
1340 | ||
1da177e4 | 1341 | #define SETUP_HOST_ATTRIBUTE_RW(field) \ |
ee959b00 | 1342 | i->private_host_attrs[count] = device_attr_host_##field; \ |
1da177e4 LT |
1343 | if (!i->f->set_host_##field) { \ |
1344 | i->private_host_attrs[count].attr.mode = S_IRUGO; \ | |
1345 | i->private_host_attrs[count].store = NULL; \ | |
1346 | } \ | |
1347 | i->host_attrs[count] = &i->private_host_attrs[count]; \ | |
1348 | if (i->f->show_host_##field) \ | |
1349 | count++ | |
1350 | ||
1351 | ||
1352 | #define fc_private_host_show_function(field, format_string, sz, cast) \ | |
1353 | static ssize_t \ | |
ee959b00 TJ |
1354 | show_fc_host_##field (struct device *dev, \ |
1355 | struct device_attribute *attr, char *buf) \ | |
1da177e4 | 1356 | { \ |
ee959b00 | 1357 | struct Scsi_Host *shost = transport_class_to_shost(dev); \ |
1da177e4 LT |
1358 | return snprintf(buf, sz, format_string, cast fc_host_##field(shost)); \ |
1359 | } | |
1360 | ||
1361 | #define fc_private_host_rd_attr(field, format_string, sz) \ | |
1362 | fc_private_host_show_function(field, format_string, sz, ) \ | |
ee959b00 | 1363 | static FC_DEVICE_ATTR(host, field, S_IRUGO, \ |
1da177e4 LT |
1364 | show_fc_host_##field, NULL) |
1365 | ||
1366 | #define fc_private_host_rd_attr_cast(field, format_string, sz, cast) \ | |
1367 | fc_private_host_show_function(field, format_string, sz, (cast)) \ | |
ee959b00 | 1368 | static FC_DEVICE_ATTR(host, field, S_IRUGO, \ |
1da177e4 LT |
1369 | show_fc_host_##field, NULL) |
1370 | ||
1371 | #define SETUP_PRIVATE_HOST_ATTRIBUTE_RD(field) \ | |
ee959b00 | 1372 | i->private_host_attrs[count] = device_attr_host_##field; \ |
1da177e4 LT |
1373 | i->private_host_attrs[count].attr.mode = S_IRUGO; \ |
1374 | i->private_host_attrs[count].store = NULL; \ | |
1375 | i->host_attrs[count] = &i->private_host_attrs[count]; \ | |
1376 | count++ | |
1377 | ||
1378 | #define SETUP_PRIVATE_HOST_ATTRIBUTE_RW(field) \ | |
91ca7b01 | 1379 | { \ |
ee959b00 | 1380 | i->private_host_attrs[count] = device_attr_host_##field; \ |
1da177e4 | 1381 | i->host_attrs[count] = &i->private_host_attrs[count]; \ |
91ca7b01 AV |
1382 | count++; \ |
1383 | } | |
1da177e4 LT |
1384 | |
1385 | ||
1386 | /* Fixed Host Attributes */ | |
1387 | ||
1388 | static ssize_t | |
ee959b00 TJ |
1389 | show_fc_host_supported_classes (struct device *dev, |
1390 | struct device_attribute *attr, char *buf) | |
1da177e4 | 1391 | { |
ee959b00 | 1392 | struct Scsi_Host *shost = transport_class_to_shost(dev); |
1da177e4 LT |
1393 | |
1394 | if (fc_host_supported_classes(shost) == FC_COS_UNSPECIFIED) | |
1395 | return snprintf(buf, 20, "unspecified\n"); | |
1396 | ||
1397 | return get_fc_cos_names(fc_host_supported_classes(shost), buf); | |
1398 | } | |
ee959b00 | 1399 | static FC_DEVICE_ATTR(host, supported_classes, S_IRUGO, |
1da177e4 LT |
1400 | show_fc_host_supported_classes, NULL); |
1401 | ||
1402 | static ssize_t | |
ee959b00 TJ |
1403 | show_fc_host_supported_fc4s (struct device *dev, |
1404 | struct device_attribute *attr, char *buf) | |
1da177e4 | 1405 | { |
ee959b00 | 1406 | struct Scsi_Host *shost = transport_class_to_shost(dev); |
1da177e4 LT |
1407 | return (ssize_t)show_fc_fc4s(buf, fc_host_supported_fc4s(shost)); |
1408 | } | |
ee959b00 | 1409 | static FC_DEVICE_ATTR(host, supported_fc4s, S_IRUGO, |
1da177e4 LT |
1410 | show_fc_host_supported_fc4s, NULL); |
1411 | ||
1412 | static ssize_t | |
ee959b00 TJ |
1413 | show_fc_host_supported_speeds (struct device *dev, |
1414 | struct device_attribute *attr, char *buf) | |
1da177e4 | 1415 | { |
ee959b00 | 1416 | struct Scsi_Host *shost = transport_class_to_shost(dev); |
1da177e4 LT |
1417 | |
1418 | if (fc_host_supported_speeds(shost) == FC_PORTSPEED_UNKNOWN) | |
1419 | return snprintf(buf, 20, "unknown\n"); | |
1420 | ||
1421 | return get_fc_port_speed_names(fc_host_supported_speeds(shost), buf); | |
1422 | } | |
ee959b00 | 1423 | static FC_DEVICE_ATTR(host, supported_speeds, S_IRUGO, |
1da177e4 LT |
1424 | show_fc_host_supported_speeds, NULL); |
1425 | ||
1426 | ||
1427 | fc_private_host_rd_attr_cast(node_name, "0x%llx\n", 20, unsigned long long); | |
1428 | fc_private_host_rd_attr_cast(port_name, "0x%llx\n", 20, unsigned long long); | |
6b7281d0 AH |
1429 | fc_private_host_rd_attr_cast(permanent_port_name, "0x%llx\n", 20, |
1430 | unsigned long long); | |
1da177e4 | 1431 | fc_private_host_rd_attr(maxframe_size, "%u bytes\n", 20); |
a53eb5e0 | 1432 | fc_private_host_rd_attr(max_npiv_vports, "%u\n", 20); |
1da177e4 LT |
1433 | fc_private_host_rd_attr(serial_number, "%s\n", (FC_SERIAL_NUMBER_SIZE +1)); |
1434 | ||
1435 | ||
1436 | /* Dynamic Host Attributes */ | |
1437 | ||
1438 | static ssize_t | |
ee959b00 TJ |
1439 | show_fc_host_active_fc4s (struct device *dev, |
1440 | struct device_attribute *attr, char *buf) | |
1da177e4 | 1441 | { |
ee959b00 | 1442 | struct Scsi_Host *shost = transport_class_to_shost(dev); |
1da177e4 LT |
1443 | struct fc_internal *i = to_fc_internal(shost->transportt); |
1444 | ||
1445 | if (i->f->get_host_active_fc4s) | |
1446 | i->f->get_host_active_fc4s(shost); | |
1447 | ||
1448 | return (ssize_t)show_fc_fc4s(buf, fc_host_active_fc4s(shost)); | |
1449 | } | |
ee959b00 | 1450 | static FC_DEVICE_ATTR(host, active_fc4s, S_IRUGO, |
1da177e4 LT |
1451 | show_fc_host_active_fc4s, NULL); |
1452 | ||
1453 | static ssize_t | |
ee959b00 TJ |
1454 | show_fc_host_speed (struct device *dev, |
1455 | struct device_attribute *attr, char *buf) | |
1da177e4 | 1456 | { |
ee959b00 | 1457 | struct Scsi_Host *shost = transport_class_to_shost(dev); |
1da177e4 LT |
1458 | struct fc_internal *i = to_fc_internal(shost->transportt); |
1459 | ||
1460 | if (i->f->get_host_speed) | |
1461 | i->f->get_host_speed(shost); | |
1462 | ||
1463 | if (fc_host_speed(shost) == FC_PORTSPEED_UNKNOWN) | |
1464 | return snprintf(buf, 20, "unknown\n"); | |
1465 | ||
1466 | return get_fc_port_speed_names(fc_host_speed(shost), buf); | |
1467 | } | |
ee959b00 | 1468 | static FC_DEVICE_ATTR(host, speed, S_IRUGO, |
1da177e4 LT |
1469 | show_fc_host_speed, NULL); |
1470 | ||
1471 | ||
1472 | fc_host_rd_attr(port_id, "0x%06x\n", 20); | |
1473 | fc_host_rd_enum_attr(port_type, FC_PORTTYPE_MAX_NAMELEN); | |
1474 | fc_host_rd_enum_attr(port_state, FC_PORTSTATE_MAX_NAMELEN); | |
1475 | fc_host_rd_attr_cast(fabric_name, "0x%llx\n", 20, unsigned long long); | |
016131b8 | 1476 | fc_host_rd_attr(symbolic_name, "%s\n", FC_SYMBOLIC_NAME_SIZE + 1); |
1da177e4 | 1477 | |
b8d08210 JS |
1478 | fc_private_host_show_function(system_hostname, "%s\n", |
1479 | FC_SYMBOLIC_NAME_SIZE + 1, ) | |
1480 | fc_host_store_str_function(system_hostname, FC_SYMBOLIC_NAME_SIZE) | |
ee959b00 | 1481 | static FC_DEVICE_ATTR(host, system_hostname, S_IRUGO | S_IWUSR, |
b8d08210 JS |
1482 | show_fc_host_system_hostname, store_fc_host_system_hostname); |
1483 | ||
1da177e4 LT |
1484 | |
1485 | /* Private Host Attributes */ | |
1486 | ||
1487 | static ssize_t | |
ee959b00 TJ |
1488 | show_fc_private_host_tgtid_bind_type(struct device *dev, |
1489 | struct device_attribute *attr, char *buf) | |
1da177e4 | 1490 | { |
ee959b00 | 1491 | struct Scsi_Host *shost = transport_class_to_shost(dev); |
1da177e4 LT |
1492 | const char *name; |
1493 | ||
1494 | name = get_fc_tgtid_bind_type_name(fc_host_tgtid_bind_type(shost)); | |
1495 | if (!name) | |
1496 | return -EINVAL; | |
1497 | return snprintf(buf, FC_BINDTYPE_MAX_NAMELEN, "%s\n", name); | |
1498 | } | |
1499 | ||
d16794f6 JSEC |
1500 | #define get_list_head_entry(pos, head, member) \ |
1501 | pos = list_entry((head)->next, typeof(*pos), member) | |
1502 | ||
1da177e4 | 1503 | static ssize_t |
ee959b00 TJ |
1504 | store_fc_private_host_tgtid_bind_type(struct device *dev, |
1505 | struct device_attribute *attr, const char *buf, size_t count) | |
1da177e4 | 1506 | { |
ee959b00 | 1507 | struct Scsi_Host *shost = transport_class_to_shost(dev); |
d16794f6 | 1508 | struct fc_rport *rport; |
1da177e4 LT |
1509 | enum fc_tgtid_binding_type val; |
1510 | unsigned long flags; | |
1511 | ||
1512 | if (get_fc_tgtid_bind_type_match(buf, &val)) | |
1513 | return -EINVAL; | |
1514 | ||
1515 | /* if changing bind type, purge all unused consistent bindings */ | |
1516 | if (val != fc_host_tgtid_bind_type(shost)) { | |
1517 | spin_lock_irqsave(shost->host_lock, flags); | |
d16794f6 JSEC |
1518 | while (!list_empty(&fc_host_rport_bindings(shost))) { |
1519 | get_list_head_entry(rport, | |
1520 | &fc_host_rport_bindings(shost), peers); | |
aedf3497 JS |
1521 | list_del(&rport->peers); |
1522 | rport->port_state = FC_PORTSTATE_DELETED; | |
1523 | fc_queue_work(shost, &rport->rport_delete_work); | |
d16794f6 | 1524 | } |
1da177e4 LT |
1525 | spin_unlock_irqrestore(shost->host_lock, flags); |
1526 | } | |
1527 | ||
1528 | fc_host_tgtid_bind_type(shost) = val; | |
1529 | return count; | |
1530 | } | |
1531 | ||
ee959b00 | 1532 | static FC_DEVICE_ATTR(host, tgtid_bind_type, S_IRUGO | S_IWUSR, |
1da177e4 LT |
1533 | show_fc_private_host_tgtid_bind_type, |
1534 | store_fc_private_host_tgtid_bind_type); | |
1535 | ||
91ca7b01 | 1536 | static ssize_t |
ee959b00 TJ |
1537 | store_fc_private_host_issue_lip(struct device *dev, |
1538 | struct device_attribute *attr, const char *buf, size_t count) | |
91ca7b01 | 1539 | { |
ee959b00 | 1540 | struct Scsi_Host *shost = transport_class_to_shost(dev); |
91ca7b01 AV |
1541 | struct fc_internal *i = to_fc_internal(shost->transportt); |
1542 | int ret; | |
1543 | ||
1544 | /* ignore any data value written to the attribute */ | |
1545 | if (i->f->issue_fc_host_lip) { | |
1546 | ret = i->f->issue_fc_host_lip(shost); | |
1547 | return ret ? ret: count; | |
1548 | } | |
1549 | ||
1550 | return -ENOENT; | |
1551 | } | |
1552 | ||
ee959b00 | 1553 | static FC_DEVICE_ATTR(host, issue_lip, S_IWUSR, NULL, |
91ca7b01 AV |
1554 | store_fc_private_host_issue_lip); |
1555 | ||
a53eb5e0 JS |
1556 | fc_private_host_rd_attr(npiv_vports_inuse, "%u\n", 20); |
1557 | ||
1558 | ||
1da177e4 LT |
1559 | /* |
1560 | * Host Statistics Management | |
1561 | */ | |
1562 | ||
1563 | /* Show a given an attribute in the statistics group */ | |
1564 | static ssize_t | |
ee959b00 | 1565 | fc_stat_show(const struct device *dev, char *buf, unsigned long offset) |
1da177e4 | 1566 | { |
ee959b00 | 1567 | struct Scsi_Host *shost = transport_class_to_shost(dev); |
1da177e4 LT |
1568 | struct fc_internal *i = to_fc_internal(shost->transportt); |
1569 | struct fc_host_statistics *stats; | |
1570 | ssize_t ret = -ENOENT; | |
1571 | ||
1572 | if (offset > sizeof(struct fc_host_statistics) || | |
1573 | offset % sizeof(u64) != 0) | |
1574 | WARN_ON(1); | |
1575 | ||
1576 | if (i->f->get_fc_host_stats) { | |
1577 | stats = (i->f->get_fc_host_stats)(shost); | |
1578 | if (stats) | |
1579 | ret = snprintf(buf, 20, "0x%llx\n", | |
1580 | (unsigned long long)*(u64 *)(((u8 *) stats) + offset)); | |
1581 | } | |
1582 | return ret; | |
1583 | } | |
1584 | ||
1585 | ||
1586 | /* generate a read-only statistics attribute */ | |
1587 | #define fc_host_statistic(name) \ | |
ee959b00 TJ |
1588 | static ssize_t show_fcstat_##name(struct device *cd, \ |
1589 | struct device_attribute *attr, \ | |
1590 | char *buf) \ | |
1da177e4 LT |
1591 | { \ |
1592 | return fc_stat_show(cd, buf, \ | |
1593 | offsetof(struct fc_host_statistics, name)); \ | |
1594 | } \ | |
ee959b00 | 1595 | static FC_DEVICE_ATTR(host, name, S_IRUGO, show_fcstat_##name, NULL) |
1da177e4 LT |
1596 | |
1597 | fc_host_statistic(seconds_since_last_reset); | |
1598 | fc_host_statistic(tx_frames); | |
1599 | fc_host_statistic(tx_words); | |
1600 | fc_host_statistic(rx_frames); | |
1601 | fc_host_statistic(rx_words); | |
1602 | fc_host_statistic(lip_count); | |
1603 | fc_host_statistic(nos_count); | |
1604 | fc_host_statistic(error_frames); | |
1605 | fc_host_statistic(dumped_frames); | |
1606 | fc_host_statistic(link_failure_count); | |
1607 | fc_host_statistic(loss_of_sync_count); | |
1608 | fc_host_statistic(loss_of_signal_count); | |
1609 | fc_host_statistic(prim_seq_protocol_err_count); | |
1610 | fc_host_statistic(invalid_tx_word_count); | |
1611 | fc_host_statistic(invalid_crc_count); | |
1612 | fc_host_statistic(fcp_input_requests); | |
1613 | fc_host_statistic(fcp_output_requests); | |
1614 | fc_host_statistic(fcp_control_requests); | |
1615 | fc_host_statistic(fcp_input_megabytes); | |
1616 | fc_host_statistic(fcp_output_megabytes); | |
1617 | ||
1618 | static ssize_t | |
ee959b00 TJ |
1619 | fc_reset_statistics(struct device *dev, struct device_attribute *attr, |
1620 | const char *buf, size_t count) | |
1da177e4 | 1621 | { |
ee959b00 | 1622 | struct Scsi_Host *shost = transport_class_to_shost(dev); |
1da177e4 LT |
1623 | struct fc_internal *i = to_fc_internal(shost->transportt); |
1624 | ||
1625 | /* ignore any data value written to the attribute */ | |
1626 | if (i->f->reset_fc_host_stats) { | |
1627 | i->f->reset_fc_host_stats(shost); | |
1628 | return count; | |
1629 | } | |
1630 | ||
1631 | return -ENOENT; | |
1632 | } | |
ee959b00 | 1633 | static FC_DEVICE_ATTR(host, reset_statistics, S_IWUSR, NULL, |
1da177e4 LT |
1634 | fc_reset_statistics); |
1635 | ||
1da177e4 | 1636 | static struct attribute *fc_statistics_attrs[] = { |
ee959b00 TJ |
1637 | &device_attr_host_seconds_since_last_reset.attr, |
1638 | &device_attr_host_tx_frames.attr, | |
1639 | &device_attr_host_tx_words.attr, | |
1640 | &device_attr_host_rx_frames.attr, | |
1641 | &device_attr_host_rx_words.attr, | |
1642 | &device_attr_host_lip_count.attr, | |
1643 | &device_attr_host_nos_count.attr, | |
1644 | &device_attr_host_error_frames.attr, | |
1645 | &device_attr_host_dumped_frames.attr, | |
1646 | &device_attr_host_link_failure_count.attr, | |
1647 | &device_attr_host_loss_of_sync_count.attr, | |
1648 | &device_attr_host_loss_of_signal_count.attr, | |
1649 | &device_attr_host_prim_seq_protocol_err_count.attr, | |
1650 | &device_attr_host_invalid_tx_word_count.attr, | |
1651 | &device_attr_host_invalid_crc_count.attr, | |
1652 | &device_attr_host_fcp_input_requests.attr, | |
1653 | &device_attr_host_fcp_output_requests.attr, | |
1654 | &device_attr_host_fcp_control_requests.attr, | |
1655 | &device_attr_host_fcp_input_megabytes.attr, | |
1656 | &device_attr_host_fcp_output_megabytes.attr, | |
1657 | &device_attr_host_reset_statistics.attr, | |
1da177e4 LT |
1658 | NULL |
1659 | }; | |
1660 | ||
1661 | static struct attribute_group fc_statistics_group = { | |
1662 | .name = "statistics", | |
1663 | .attrs = fc_statistics_attrs, | |
1664 | }; | |
1665 | ||
a53eb5e0 JS |
1666 | |
1667 | /* Host Vport Attributes */ | |
1668 | ||
1669 | static int | |
1670 | fc_parse_wwn(const char *ns, u64 *nm) | |
1671 | { | |
1672 | unsigned int i, j; | |
1673 | u8 wwn[8]; | |
1674 | ||
1675 | memset(wwn, 0, sizeof(wwn)); | |
1676 | ||
1677 | /* Validate and store the new name */ | |
1678 | for (i=0, j=0; i < 16; i++) { | |
1679 | if ((*ns >= 'a') && (*ns <= 'f')) | |
1680 | j = ((j << 4) | ((*ns++ -'a') + 10)); | |
1681 | else if ((*ns >= 'A') && (*ns <= 'F')) | |
1682 | j = ((j << 4) | ((*ns++ -'A') + 10)); | |
1683 | else if ((*ns >= '0') && (*ns <= '9')) | |
1684 | j = ((j << 4) | (*ns++ -'0')); | |
1685 | else | |
1686 | return -EINVAL; | |
1687 | if (i % 2) { | |
1688 | wwn[i/2] = j & 0xff; | |
1689 | j = 0; | |
1690 | } | |
1691 | } | |
1692 | ||
1693 | *nm = wwn_to_u64(wwn); | |
1694 | ||
1695 | return 0; | |
1696 | } | |
1697 | ||
1698 | ||
1699 | /* | |
1700 | * "Short-cut" sysfs variable to create a new vport on a FC Host. | |
1701 | * Input is a string of the form "<WWPN>:<WWNN>". Other attributes | |
1702 | * will default to a NPIV-based FCP_Initiator; The WWNs are specified | |
1703 | * as hex characters, and may *not* contain any prefixes (e.g. 0x, x, etc) | |
1704 | */ | |
1705 | static ssize_t | |
ee959b00 TJ |
1706 | store_fc_host_vport_create(struct device *dev, struct device_attribute *attr, |
1707 | const char *buf, size_t count) | |
a53eb5e0 | 1708 | { |
ee959b00 | 1709 | struct Scsi_Host *shost = transport_class_to_shost(dev); |
a53eb5e0 JS |
1710 | struct fc_vport_identifiers vid; |
1711 | struct fc_vport *vport; | |
1712 | unsigned int cnt=count; | |
1713 | int stat; | |
1714 | ||
1715 | memset(&vid, 0, sizeof(vid)); | |
1716 | ||
1717 | /* count may include a LF at end of string */ | |
1718 | if (buf[cnt-1] == '\n') | |
1719 | cnt--; | |
1720 | ||
1721 | /* validate we have enough characters for WWPN */ | |
1722 | if ((cnt != (16+1+16)) || (buf[16] != ':')) | |
1723 | return -EINVAL; | |
1724 | ||
1725 | stat = fc_parse_wwn(&buf[0], &vid.port_name); | |
1726 | if (stat) | |
1727 | return stat; | |
1728 | ||
1729 | stat = fc_parse_wwn(&buf[17], &vid.node_name); | |
1730 | if (stat) | |
1731 | return stat; | |
1732 | ||
1733 | vid.roles = FC_PORT_ROLE_FCP_INITIATOR; | |
1734 | vid.vport_type = FC_PORTTYPE_NPIV; | |
1735 | /* vid.symbolic_name is already zero/NULL's */ | |
1736 | vid.disable = false; /* always enabled */ | |
1737 | ||
1738 | /* we only allow support on Channel 0 !!! */ | |
a30c3f69 | 1739 | stat = fc_vport_setup(shost, 0, &shost->shost_gendev, &vid, &vport); |
a53eb5e0 JS |
1740 | return stat ? stat : count; |
1741 | } | |
ee959b00 | 1742 | static FC_DEVICE_ATTR(host, vport_create, S_IWUSR, NULL, |
a53eb5e0 JS |
1743 | store_fc_host_vport_create); |
1744 | ||
1745 | ||
1746 | /* | |
1747 | * "Short-cut" sysfs variable to delete a vport on a FC Host. | |
1748 | * Vport is identified by a string containing "<WWPN>:<WWNN>". | |
1749 | * The WWNs are specified as hex characters, and may *not* contain | |
1750 | * any prefixes (e.g. 0x, x, etc) | |
1751 | */ | |
1752 | static ssize_t | |
ee959b00 TJ |
1753 | store_fc_host_vport_delete(struct device *dev, struct device_attribute *attr, |
1754 | const char *buf, size_t count) | |
a53eb5e0 | 1755 | { |
ee959b00 | 1756 | struct Scsi_Host *shost = transport_class_to_shost(dev); |
a53eb5e0 JS |
1757 | struct fc_host_attrs *fc_host = shost_to_fc_host(shost); |
1758 | struct fc_vport *vport; | |
1759 | u64 wwpn, wwnn; | |
1760 | unsigned long flags; | |
1761 | unsigned int cnt=count; | |
1762 | int stat, match; | |
1763 | ||
1764 | /* count may include a LF at end of string */ | |
1765 | if (buf[cnt-1] == '\n') | |
1766 | cnt--; | |
1767 | ||
1768 | /* validate we have enough characters for WWPN */ | |
1769 | if ((cnt != (16+1+16)) || (buf[16] != ':')) | |
1770 | return -EINVAL; | |
1771 | ||
1772 | stat = fc_parse_wwn(&buf[0], &wwpn); | |
1773 | if (stat) | |
1774 | return stat; | |
1775 | ||
1776 | stat = fc_parse_wwn(&buf[17], &wwnn); | |
1777 | if (stat) | |
1778 | return stat; | |
1779 | ||
1780 | spin_lock_irqsave(shost->host_lock, flags); | |
1781 | match = 0; | |
1782 | /* we only allow support on Channel 0 !!! */ | |
1783 | list_for_each_entry(vport, &fc_host->vports, peers) { | |
1784 | if ((vport->channel == 0) && | |
1785 | (vport->port_name == wwpn) && (vport->node_name == wwnn)) { | |
1786 | match = 1; | |
1787 | break; | |
1788 | } | |
1789 | } | |
1790 | spin_unlock_irqrestore(shost->host_lock, flags); | |
1791 | ||
1792 | if (!match) | |
1793 | return -ENODEV; | |
1794 | ||
1795 | stat = fc_vport_terminate(vport); | |
1796 | return stat ? stat : count; | |
1797 | } | |
ee959b00 | 1798 | static FC_DEVICE_ATTR(host, vport_delete, S_IWUSR, NULL, |
a53eb5e0 JS |
1799 | store_fc_host_vport_delete); |
1800 | ||
1801 | ||
1da177e4 LT |
1802 | static int fc_host_match(struct attribute_container *cont, |
1803 | struct device *dev) | |
1804 | { | |
1805 | struct Scsi_Host *shost; | |
1806 | struct fc_internal *i; | |
1807 | ||
1808 | if (!scsi_is_host_device(dev)) | |
1809 | return 0; | |
1810 | ||
1811 | shost = dev_to_shost(dev); | |
1812 | if (!shost->transportt || shost->transportt->host_attrs.ac.class | |
1813 | != &fc_host_class.class) | |
1814 | return 0; | |
1815 | ||
1816 | i = to_fc_internal(shost->transportt); | |
1817 | ||
1818 | return &i->t.host_attrs.ac == cont; | |
1819 | } | |
1820 | ||
1821 | static int fc_target_match(struct attribute_container *cont, | |
1822 | struct device *dev) | |
1823 | { | |
1824 | struct Scsi_Host *shost; | |
1825 | struct fc_internal *i; | |
1826 | ||
1827 | if (!scsi_is_target_device(dev)) | |
1828 | return 0; | |
1829 | ||
1830 | shost = dev_to_shost(dev->parent); | |
1831 | if (!shost->transportt || shost->transportt->host_attrs.ac.class | |
1832 | != &fc_host_class.class) | |
1833 | return 0; | |
1834 | ||
1835 | i = to_fc_internal(shost->transportt); | |
1836 | ||
1837 | return &i->t.target_attrs.ac == cont; | |
1838 | } | |
1839 | ||
1840 | static void fc_rport_dev_release(struct device *dev) | |
1841 | { | |
1842 | struct fc_rport *rport = dev_to_rport(dev); | |
1843 | put_device(dev->parent); | |
1844 | kfree(rport); | |
1845 | } | |
1846 | ||
1847 | int scsi_is_fc_rport(const struct device *dev) | |
1848 | { | |
1849 | return dev->release == fc_rport_dev_release; | |
1850 | } | |
1851 | EXPORT_SYMBOL(scsi_is_fc_rport); | |
1852 | ||
1853 | static int fc_rport_match(struct attribute_container *cont, | |
1854 | struct device *dev) | |
1855 | { | |
1856 | struct Scsi_Host *shost; | |
1857 | struct fc_internal *i; | |
1858 | ||
1859 | if (!scsi_is_fc_rport(dev)) | |
1860 | return 0; | |
1861 | ||
1862 | shost = dev_to_shost(dev->parent); | |
1863 | if (!shost->transportt || shost->transportt->host_attrs.ac.class | |
1864 | != &fc_host_class.class) | |
1865 | return 0; | |
1866 | ||
1867 | i = to_fc_internal(shost->transportt); | |
1868 | ||
1869 | return &i->rport_attr_cont.ac == cont; | |
1870 | } | |
1871 | ||
5c44cd2a | 1872 | |
a53eb5e0 JS |
1873 | static void fc_vport_dev_release(struct device *dev) |
1874 | { | |
1875 | struct fc_vport *vport = dev_to_vport(dev); | |
1876 | put_device(dev->parent); /* release kobj parent */ | |
1877 | kfree(vport); | |
1878 | } | |
1879 | ||
1880 | int scsi_is_fc_vport(const struct device *dev) | |
1881 | { | |
1882 | return dev->release == fc_vport_dev_release; | |
1883 | } | |
1884 | EXPORT_SYMBOL(scsi_is_fc_vport); | |
1885 | ||
1886 | static int fc_vport_match(struct attribute_container *cont, | |
1887 | struct device *dev) | |
1888 | { | |
1889 | struct fc_vport *vport; | |
1890 | struct Scsi_Host *shost; | |
1891 | struct fc_internal *i; | |
1892 | ||
1893 | if (!scsi_is_fc_vport(dev)) | |
1894 | return 0; | |
1895 | vport = dev_to_vport(dev); | |
1896 | ||
1897 | shost = vport_to_shost(vport); | |
1898 | if (!shost->transportt || shost->transportt->host_attrs.ac.class | |
1899 | != &fc_host_class.class) | |
1900 | return 0; | |
1901 | ||
1902 | i = to_fc_internal(shost->transportt); | |
1903 | return &i->vport_attr_cont.ac == cont; | |
1904 | } | |
1905 | ||
1906 | ||
c829c394 JS |
1907 | /** |
1908 | * fc_timed_out - FC Transport I/O timeout intercept handler | |
c829c394 JS |
1909 | * @scmd: The SCSI command which timed out |
1910 | * | |
1911 | * This routine protects against error handlers getting invoked while a | |
1912 | * rport is in a blocked state, typically due to a temporarily loss of | |
1913 | * connectivity. If the error handlers are allowed to proceed, requests | |
1914 | * to abort i/o, reset the target, etc will likely fail as there is no way | |
1915 | * to communicate with the device to perform the requested function. These | |
1916 | * failures may result in the midlayer taking the device offline, requiring | |
1917 | * manual intervention to restore operation. | |
1918 | * | |
1919 | * This routine, called whenever an i/o times out, validates the state of | |
1920 | * the underlying rport. If the rport is blocked, it returns | |
1921 | * EH_RESET_TIMER, which will continue to reschedule the timeout. | |
1922 | * Eventually, either the device will return, or devloss_tmo will fire, | |
1923 | * and when the timeout then fires, it will be handled normally. | |
1924 | * If the rport is not blocked, normal error handling continues. | |
1925 | * | |
1926 | * Notes: | |
1927 | * This routine assumes no locks are held on entry. | |
eb44820c | 1928 | */ |
242f9dcb | 1929 | static enum blk_eh_timer_return |
c829c394 JS |
1930 | fc_timed_out(struct scsi_cmnd *scmd) |
1931 | { | |
1932 | struct fc_rport *rport = starget_to_rport(scsi_target(scmd->device)); | |
1933 | ||
1934 | if (rport->port_state == FC_PORTSTATE_BLOCKED) | |
242f9dcb | 1935 | return BLK_EH_RESET_TIMER; |
c829c394 | 1936 | |
242f9dcb | 1937 | return BLK_EH_NOT_HANDLED; |
c829c394 JS |
1938 | } |
1939 | ||
5c44cd2a | 1940 | /* |
bda23253 JS |
1941 | * Called by fc_user_scan to locate an rport on the shost that |
1942 | * matches the channel and target id, and invoke scsi_scan_target() | |
1943 | * on the rport. | |
5c44cd2a | 1944 | */ |
bda23253 JS |
1945 | static void |
1946 | fc_user_scan_tgt(struct Scsi_Host *shost, uint channel, uint id, uint lun) | |
5c44cd2a JSEC |
1947 | { |
1948 | struct fc_rport *rport; | |
bda23253 JS |
1949 | unsigned long flags; |
1950 | ||
1951 | spin_lock_irqsave(shost->host_lock, flags); | |
5c44cd2a | 1952 | |
e02f3f59 CH |
1953 | list_for_each_entry(rport, &fc_host_rports(shost), peers) { |
1954 | if (rport->scsi_target_id == -1) | |
1955 | continue; | |
5c44cd2a | 1956 | |
0d2fcd9f HR |
1957 | if (rport->port_state != FC_PORTSTATE_ONLINE) |
1958 | continue; | |
1959 | ||
bda23253 JS |
1960 | if ((channel == rport->channel) && |
1961 | (id == rport->scsi_target_id)) { | |
1962 | spin_unlock_irqrestore(shost->host_lock, flags); | |
1963 | scsi_scan_target(&rport->dev, channel, id, lun, 1); | |
1964 | return; | |
e02f3f59 CH |
1965 | } |
1966 | } | |
1967 | ||
bda23253 JS |
1968 | spin_unlock_irqrestore(shost->host_lock, flags); |
1969 | } | |
1970 | ||
1971 | /* | |
1972 | * Called via sysfs scan routines. Necessary, as the FC transport | |
1973 | * wants to place all target objects below the rport object. So this | |
1974 | * routine must invoke the scsi_scan_target() routine with the rport | |
1975 | * object as the parent. | |
1976 | */ | |
1977 | static int | |
1978 | fc_user_scan(struct Scsi_Host *shost, uint channel, uint id, uint lun) | |
1979 | { | |
1980 | uint chlo, chhi; | |
1981 | uint tgtlo, tgthi; | |
1982 | ||
1983 | if (((channel != SCAN_WILD_CARD) && (channel > shost->max_channel)) || | |
1984 | ((id != SCAN_WILD_CARD) && (id >= shost->max_id)) || | |
1985 | ((lun != SCAN_WILD_CARD) && (lun > shost->max_lun))) | |
1986 | return -EINVAL; | |
1987 | ||
1988 | if (channel == SCAN_WILD_CARD) { | |
1989 | chlo = 0; | |
1990 | chhi = shost->max_channel + 1; | |
1991 | } else { | |
1992 | chlo = channel; | |
1993 | chhi = channel + 1; | |
1994 | } | |
1995 | ||
1996 | if (id == SCAN_WILD_CARD) { | |
1997 | tgtlo = 0; | |
1998 | tgthi = shost->max_id; | |
1999 | } else { | |
2000 | tgtlo = id; | |
2001 | tgthi = id + 1; | |
2002 | } | |
2003 | ||
2004 | for ( ; chlo < chhi; chlo++) | |
2005 | for ( ; tgtlo < tgthi; tgtlo++) | |
2006 | fc_user_scan_tgt(shost, chlo, tgtlo, lun); | |
2007 | ||
e02f3f59 | 2008 | return 0; |
5c44cd2a JSEC |
2009 | } |
2010 | ||
7525236d FT |
2011 | static int fc_tsk_mgmt_response(struct Scsi_Host *shost, u64 nexus, u64 tm_id, |
2012 | int result) | |
2013 | { | |
2014 | struct fc_internal *i = to_fc_internal(shost->transportt); | |
2015 | return i->f->tsk_mgmt_response(shost, nexus, tm_id, result); | |
2016 | } | |
2017 | ||
2018 | static int fc_it_nexus_response(struct Scsi_Host *shost, u64 nexus, int result) | |
2019 | { | |
2020 | struct fc_internal *i = to_fc_internal(shost->transportt); | |
2021 | return i->f->it_nexus_response(shost, nexus, result); | |
2022 | } | |
2023 | ||
1da177e4 LT |
2024 | struct scsi_transport_template * |
2025 | fc_attach_transport(struct fc_function_template *ft) | |
2026 | { | |
1da177e4 | 2027 | int count; |
24669f75 JS |
2028 | struct fc_internal *i = kzalloc(sizeof(struct fc_internal), |
2029 | GFP_KERNEL); | |
1da177e4 LT |
2030 | |
2031 | if (unlikely(!i)) | |
2032 | return NULL; | |
2033 | ||
1da177e4 LT |
2034 | i->t.target_attrs.ac.attrs = &i->starget_attrs[0]; |
2035 | i->t.target_attrs.ac.class = &fc_transport_class.class; | |
2036 | i->t.target_attrs.ac.match = fc_target_match; | |
2037 | i->t.target_size = sizeof(struct fc_starget_attrs); | |
2038 | transport_container_register(&i->t.target_attrs); | |
2039 | ||
2040 | i->t.host_attrs.ac.attrs = &i->host_attrs[0]; | |
2041 | i->t.host_attrs.ac.class = &fc_host_class.class; | |
2042 | i->t.host_attrs.ac.match = fc_host_match; | |
2043 | i->t.host_size = sizeof(struct fc_host_attrs); | |
2044 | if (ft->get_fc_host_stats) | |
2045 | i->t.host_attrs.statistics = &fc_statistics_group; | |
2046 | transport_container_register(&i->t.host_attrs); | |
2047 | ||
2048 | i->rport_attr_cont.ac.attrs = &i->rport_attrs[0]; | |
2049 | i->rport_attr_cont.ac.class = &fc_rport_class.class; | |
2050 | i->rport_attr_cont.ac.match = fc_rport_match; | |
2051 | transport_container_register(&i->rport_attr_cont); | |
2052 | ||
a53eb5e0 JS |
2053 | i->vport_attr_cont.ac.attrs = &i->vport_attrs[0]; |
2054 | i->vport_attr_cont.ac.class = &fc_vport_class.class; | |
2055 | i->vport_attr_cont.ac.match = fc_vport_match; | |
2056 | transport_container_register(&i->vport_attr_cont); | |
2057 | ||
1da177e4 LT |
2058 | i->f = ft; |
2059 | ||
2060 | /* Transport uses the shost workq for scsi scanning */ | |
2061 | i->t.create_work_queue = 1; | |
5c44cd2a | 2062 | |
c829c394 JS |
2063 | i->t.eh_timed_out = fc_timed_out; |
2064 | ||
e02f3f59 | 2065 | i->t.user_scan = fc_user_scan; |
9ef3e4a4 | 2066 | |
7525236d FT |
2067 | /* target-mode drivers' functions */ |
2068 | i->t.tsk_mgmt_response = fc_tsk_mgmt_response; | |
2069 | i->t.it_nexus_response = fc_it_nexus_response; | |
2070 | ||
1da177e4 LT |
2071 | /* |
2072 | * Setup SCSI Target Attributes. | |
2073 | */ | |
2074 | count = 0; | |
2075 | SETUP_STARGET_ATTRIBUTE_RD(node_name); | |
2076 | SETUP_STARGET_ATTRIBUTE_RD(port_name); | |
2077 | SETUP_STARGET_ATTRIBUTE_RD(port_id); | |
2078 | ||
2079 | BUG_ON(count > FC_STARGET_NUM_ATTRS); | |
2080 | ||
2081 | i->starget_attrs[count] = NULL; | |
2082 | ||
2083 | ||
2084 | /* | |
2085 | * Setup SCSI Host Attributes. | |
2086 | */ | |
2087 | count=0; | |
2088 | SETUP_HOST_ATTRIBUTE_RD(node_name); | |
2089 | SETUP_HOST_ATTRIBUTE_RD(port_name); | |
6b7281d0 | 2090 | SETUP_HOST_ATTRIBUTE_RD(permanent_port_name); |
1da177e4 LT |
2091 | SETUP_HOST_ATTRIBUTE_RD(supported_classes); |
2092 | SETUP_HOST_ATTRIBUTE_RD(supported_fc4s); | |
1da177e4 LT |
2093 | SETUP_HOST_ATTRIBUTE_RD(supported_speeds); |
2094 | SETUP_HOST_ATTRIBUTE_RD(maxframe_size); | |
a53eb5e0 JS |
2095 | if (ft->vport_create) { |
2096 | SETUP_HOST_ATTRIBUTE_RD_NS(max_npiv_vports); | |
2097 | SETUP_HOST_ATTRIBUTE_RD_NS(npiv_vports_inuse); | |
2098 | } | |
1da177e4 LT |
2099 | SETUP_HOST_ATTRIBUTE_RD(serial_number); |
2100 | ||
2101 | SETUP_HOST_ATTRIBUTE_RD(port_id); | |
2102 | SETUP_HOST_ATTRIBUTE_RD(port_type); | |
2103 | SETUP_HOST_ATTRIBUTE_RD(port_state); | |
2104 | SETUP_HOST_ATTRIBUTE_RD(active_fc4s); | |
2105 | SETUP_HOST_ATTRIBUTE_RD(speed); | |
2106 | SETUP_HOST_ATTRIBUTE_RD(fabric_name); | |
016131b8 | 2107 | SETUP_HOST_ATTRIBUTE_RD(symbolic_name); |
b8d08210 | 2108 | SETUP_HOST_ATTRIBUTE_RW(system_hostname); |
1da177e4 LT |
2109 | |
2110 | /* Transport-managed attributes */ | |
2111 | SETUP_PRIVATE_HOST_ATTRIBUTE_RW(tgtid_bind_type); | |
91ca7b01 AV |
2112 | if (ft->issue_fc_host_lip) |
2113 | SETUP_PRIVATE_HOST_ATTRIBUTE_RW(issue_lip); | |
a53eb5e0 JS |
2114 | if (ft->vport_create) |
2115 | SETUP_PRIVATE_HOST_ATTRIBUTE_RW(vport_create); | |
2116 | if (ft->vport_delete) | |
2117 | SETUP_PRIVATE_HOST_ATTRIBUTE_RW(vport_delete); | |
1da177e4 LT |
2118 | |
2119 | BUG_ON(count > FC_HOST_NUM_ATTRS); | |
2120 | ||
2121 | i->host_attrs[count] = NULL; | |
2122 | ||
2123 | /* | |
2124 | * Setup Remote Port Attributes. | |
2125 | */ | |
2126 | count=0; | |
2127 | SETUP_RPORT_ATTRIBUTE_RD(maxframe_size); | |
2128 | SETUP_RPORT_ATTRIBUTE_RD(supported_classes); | |
2129 | SETUP_RPORT_ATTRIBUTE_RW(dev_loss_tmo); | |
2130 | SETUP_PRIVATE_RPORT_ATTRIBUTE_RD(node_name); | |
2131 | SETUP_PRIVATE_RPORT_ATTRIBUTE_RD(port_name); | |
2132 | SETUP_PRIVATE_RPORT_ATTRIBUTE_RD(port_id); | |
2133 | SETUP_PRIVATE_RPORT_ATTRIBUTE_RD(roles); | |
2134 | SETUP_PRIVATE_RPORT_ATTRIBUTE_RD(port_state); | |
2135 | SETUP_PRIVATE_RPORT_ATTRIBUTE_RD(scsi_target_id); | |
0f29b966 JS |
2136 | if (ft->terminate_rport_io) |
2137 | SETUP_PRIVATE_RPORT_ATTRIBUTE_RW(fast_io_fail_tmo); | |
1da177e4 LT |
2138 | |
2139 | BUG_ON(count > FC_RPORT_NUM_ATTRS); | |
2140 | ||
2141 | i->rport_attrs[count] = NULL; | |
2142 | ||
a53eb5e0 JS |
2143 | /* |
2144 | * Setup Virtual Port Attributes. | |
2145 | */ | |
2146 | count=0; | |
2147 | SETUP_PRIVATE_VPORT_ATTRIBUTE_RD(vport_state); | |
2148 | SETUP_PRIVATE_VPORT_ATTRIBUTE_RD(vport_last_state); | |
2149 | SETUP_PRIVATE_VPORT_ATTRIBUTE_RD(node_name); | |
2150 | SETUP_PRIVATE_VPORT_ATTRIBUTE_RD(port_name); | |
2151 | SETUP_PRIVATE_VPORT_ATTRIBUTE_RD(roles); | |
2152 | SETUP_PRIVATE_VPORT_ATTRIBUTE_RD(vport_type); | |
2153 | SETUP_VPORT_ATTRIBUTE_RW(symbolic_name); | |
2154 | SETUP_VPORT_ATTRIBUTE_WR(vport_delete); | |
2155 | SETUP_VPORT_ATTRIBUTE_WR(vport_disable); | |
2156 | ||
2157 | BUG_ON(count > FC_VPORT_NUM_ATTRS); | |
2158 | ||
2159 | i->vport_attrs[count] = NULL; | |
2160 | ||
1da177e4 LT |
2161 | return &i->t; |
2162 | } | |
2163 | EXPORT_SYMBOL(fc_attach_transport); | |
2164 | ||
2165 | void fc_release_transport(struct scsi_transport_template *t) | |
2166 | { | |
2167 | struct fc_internal *i = to_fc_internal(t); | |
2168 | ||
2169 | transport_container_unregister(&i->t.target_attrs); | |
2170 | transport_container_unregister(&i->t.host_attrs); | |
2171 | transport_container_unregister(&i->rport_attr_cont); | |
a53eb5e0 | 2172 | transport_container_unregister(&i->vport_attr_cont); |
1da177e4 LT |
2173 | |
2174 | kfree(i); | |
2175 | } | |
2176 | EXPORT_SYMBOL(fc_release_transport); | |
2177 | ||
aedf3497 JS |
2178 | /** |
2179 | * fc_queue_work - Queue work to the fc_host workqueue. | |
2180 | * @shost: Pointer to Scsi_Host bound to fc_host. | |
2181 | * @work: Work to queue for execution. | |
2182 | * | |
2183 | * Return value: | |
a0785edf JS |
2184 | * 1 - work queued for execution |
2185 | * 0 - work is already queued | |
2186 | * -EINVAL - work queue doesn't exist | |
eb44820c | 2187 | */ |
aedf3497 JS |
2188 | static int |
2189 | fc_queue_work(struct Scsi_Host *shost, struct work_struct *work) | |
2190 | { | |
2191 | if (unlikely(!fc_host_work_q(shost))) { | |
2192 | printk(KERN_ERR | |
2193 | "ERROR: FC host '%s' attempted to queue work, " | |
2194 | "when no workqueue created.\n", shost->hostt->name); | |
2195 | dump_stack(); | |
2196 | ||
2197 | return -EINVAL; | |
2198 | } | |
2199 | ||
2200 | return queue_work(fc_host_work_q(shost), work); | |
2201 | } | |
2202 | ||
2203 | /** | |
2204 | * fc_flush_work - Flush a fc_host's workqueue. | |
2205 | * @shost: Pointer to Scsi_Host bound to fc_host. | |
eb44820c | 2206 | */ |
aedf3497 JS |
2207 | static void |
2208 | fc_flush_work(struct Scsi_Host *shost) | |
2209 | { | |
2210 | if (!fc_host_work_q(shost)) { | |
2211 | printk(KERN_ERR | |
2212 | "ERROR: FC host '%s' attempted to flush work, " | |
2213 | "when no workqueue created.\n", shost->hostt->name); | |
2214 | dump_stack(); | |
2215 | return; | |
2216 | } | |
2217 | ||
2218 | flush_workqueue(fc_host_work_q(shost)); | |
2219 | } | |
2220 | ||
2221 | /** | |
2222 | * fc_queue_devloss_work - Schedule work for the fc_host devloss workqueue. | |
2223 | * @shost: Pointer to Scsi_Host bound to fc_host. | |
2224 | * @work: Work to queue for execution. | |
2225 | * @delay: jiffies to delay the work queuing | |
2226 | * | |
2227 | * Return value: | |
0f29b966 | 2228 | * 1 on success / 0 already queued / < 0 for error |
eb44820c | 2229 | */ |
aedf3497 | 2230 | static int |
c4028958 | 2231 | fc_queue_devloss_work(struct Scsi_Host *shost, struct delayed_work *work, |
aedf3497 JS |
2232 | unsigned long delay) |
2233 | { | |
2234 | if (unlikely(!fc_host_devloss_work_q(shost))) { | |
2235 | printk(KERN_ERR | |
2236 | "ERROR: FC host '%s' attempted to queue work, " | |
2237 | "when no workqueue created.\n", shost->hostt->name); | |
2238 | dump_stack(); | |
2239 | ||
2240 | return -EINVAL; | |
2241 | } | |
2242 | ||
2243 | return queue_delayed_work(fc_host_devloss_work_q(shost), work, delay); | |
2244 | } | |
2245 | ||
2246 | /** | |
2247 | * fc_flush_devloss - Flush a fc_host's devloss workqueue. | |
2248 | * @shost: Pointer to Scsi_Host bound to fc_host. | |
eb44820c | 2249 | */ |
aedf3497 JS |
2250 | static void |
2251 | fc_flush_devloss(struct Scsi_Host *shost) | |
2252 | { | |
2253 | if (!fc_host_devloss_work_q(shost)) { | |
2254 | printk(KERN_ERR | |
2255 | "ERROR: FC host '%s' attempted to flush work, " | |
2256 | "when no workqueue created.\n", shost->hostt->name); | |
2257 | dump_stack(); | |
2258 | return; | |
2259 | } | |
2260 | ||
2261 | flush_workqueue(fc_host_devloss_work_q(shost)); | |
2262 | } | |
2263 | ||
1da177e4 LT |
2264 | |
2265 | /** | |
eb44820c RL |
2266 | * fc_remove_host - called to terminate any fc_transport-related elements for a scsi host. |
2267 | * @shost: Which &Scsi_Host | |
1da177e4 LT |
2268 | * |
2269 | * This routine is expected to be called immediately preceeding the | |
2270 | * a driver's call to scsi_remove_host(). | |
2271 | * | |
2272 | * WARNING: A driver utilizing the fc_transport, which fails to call | |
eb44820c | 2273 | * this routine prior to scsi_remove_host(), will leave dangling |
1da177e4 LT |
2274 | * objects in /sys/class/fc_remote_ports. Access to any of these |
2275 | * objects can result in a system crash !!! | |
2276 | * | |
2277 | * Notes: | |
2278 | * This routine assumes no locks are held on entry. | |
eb44820c | 2279 | */ |
1da177e4 LT |
2280 | void |
2281 | fc_remove_host(struct Scsi_Host *shost) | |
2282 | { | |
a53eb5e0 JS |
2283 | struct fc_vport *vport = NULL, *next_vport = NULL; |
2284 | struct fc_rport *rport = NULL, *next_rport = NULL; | |
aedf3497 JS |
2285 | struct workqueue_struct *work_q; |
2286 | struct fc_host_attrs *fc_host = shost_to_fc_host(shost); | |
a53eb5e0 | 2287 | unsigned long flags; |
a53eb5e0 JS |
2288 | |
2289 | spin_lock_irqsave(shost->host_lock, flags); | |
2290 | ||
2291 | /* Remove any vports */ | |
9ef3e4a4 JS |
2292 | list_for_each_entry_safe(vport, next_vport, &fc_host->vports, peers) |
2293 | fc_queue_work(shost, &vport->vport_delete_work); | |
1da177e4 LT |
2294 | |
2295 | /* Remove any remote ports */ | |
2296 | list_for_each_entry_safe(rport, next_rport, | |
aedf3497 JS |
2297 | &fc_host->rports, peers) { |
2298 | list_del(&rport->peers); | |
2299 | rport->port_state = FC_PORTSTATE_DELETED; | |
2300 | fc_queue_work(shost, &rport->rport_delete_work); | |
2301 | } | |
2302 | ||
1da177e4 | 2303 | list_for_each_entry_safe(rport, next_rport, |
aedf3497 JS |
2304 | &fc_host->rport_bindings, peers) { |
2305 | list_del(&rport->peers); | |
2306 | rport->port_state = FC_PORTSTATE_DELETED; | |
2307 | fc_queue_work(shost, &rport->rport_delete_work); | |
2308 | } | |
2309 | ||
a53eb5e0 JS |
2310 | spin_unlock_irqrestore(shost->host_lock, flags); |
2311 | ||
aedf3497 JS |
2312 | /* flush all scan work items */ |
2313 | scsi_flush_work(shost); | |
2314 | ||
2315 | /* flush all stgt delete, and rport delete work items, then kill it */ | |
2316 | if (fc_host->work_q) { | |
2317 | work_q = fc_host->work_q; | |
2318 | fc_host->work_q = NULL; | |
2319 | destroy_workqueue(work_q); | |
2320 | } | |
2321 | ||
2322 | /* flush all devloss work items, then kill it */ | |
2323 | if (fc_host->devloss_work_q) { | |
2324 | work_q = fc_host->devloss_work_q; | |
2325 | fc_host->devloss_work_q = NULL; | |
2326 | destroy_workqueue(work_q); | |
2327 | } | |
1da177e4 LT |
2328 | } |
2329 | EXPORT_SYMBOL(fc_remove_host); | |
2330 | ||
aedf3497 JS |
2331 | |
2332 | /** | |
2333 | * fc_starget_delete - called to delete the scsi decendents of an rport | |
c4028958 | 2334 | * @work: remote port to be operated on. |
eb44820c RL |
2335 | * |
2336 | * Deletes target and all sdevs. | |
2337 | */ | |
19a7b4ae | 2338 | static void |
c4028958 | 2339 | fc_starget_delete(struct work_struct *work) |
19a7b4ae | 2340 | { |
c4028958 DH |
2341 | struct fc_rport *rport = |
2342 | container_of(work, struct fc_rport, stgt_delete_work); | |
19a7b4ae | 2343 | struct Scsi_Host *shost = rport_to_shost(rport); |
0f29b966 JS |
2344 | struct fc_internal *i = to_fc_internal(shost->transportt); |
2345 | ||
92740b24 JS |
2346 | /* Involve the LLDD if possible to terminate all io on the rport. */ |
2347 | if (i->f->terminate_rport_io) | |
0f29b966 | 2348 | i->f->terminate_rport_io(rport); |
19a7b4ae | 2349 | |
19a7b4ae JSEC |
2350 | scsi_remove_target(&rport->dev); |
2351 | } | |
2352 | ||
aedf3497 JS |
2353 | |
2354 | /** | |
2355 | * fc_rport_final_delete - finish rport termination and delete it. | |
c4028958 | 2356 | * @work: remote port to be deleted. |
eb44820c | 2357 | */ |
aedf3497 | 2358 | static void |
c4028958 | 2359 | fc_rport_final_delete(struct work_struct *work) |
aedf3497 | 2360 | { |
c4028958 DH |
2361 | struct fc_rport *rport = |
2362 | container_of(work, struct fc_rport, rport_delete_work); | |
aedf3497 JS |
2363 | struct device *dev = &rport->dev; |
2364 | struct Scsi_Host *shost = rport_to_shost(rport); | |
0f29b966 | 2365 | struct fc_internal *i = to_fc_internal(shost->transportt); |
92740b24 | 2366 | unsigned long flags; |
aedf3497 JS |
2367 | |
2368 | /* | |
9ef3e4a4 | 2369 | * if a scan is pending, flush the SCSI Host work_q so that |
aedf3497 JS |
2370 | * that we can reclaim the rport scan work element. |
2371 | */ | |
2372 | if (rport->flags & FC_RPORT_SCAN_PENDING) | |
2373 | scsi_flush_work(shost); | |
2374 | ||
92740b24 JS |
2375 | /* involve the LLDD to terminate all pending i/o */ |
2376 | if (i->f->terminate_rport_io) | |
2377 | i->f->terminate_rport_io(rport); | |
2378 | ||
2379 | /* | |
2380 | * Cancel any outstanding timers. These should really exist | |
2381 | * only when rmmod'ing the LLDD and we're asking for | |
2382 | * immediate termination of the rports | |
2383 | */ | |
2384 | spin_lock_irqsave(shost->host_lock, flags); | |
2385 | if (rport->flags & FC_RPORT_DEVLOSS_PENDING) { | |
2386 | spin_unlock_irqrestore(shost->host_lock, flags); | |
2387 | if (!cancel_delayed_work(&rport->fail_io_work)) | |
2388 | fc_flush_devloss(shost); | |
2389 | if (!cancel_delayed_work(&rport->dev_loss_work)) | |
2390 | fc_flush_devloss(shost); | |
2391 | spin_lock_irqsave(shost->host_lock, flags); | |
2392 | rport->flags &= ~FC_RPORT_DEVLOSS_PENDING; | |
2393 | } | |
2394 | spin_unlock_irqrestore(shost->host_lock, flags); | |
2395 | ||
0f29b966 JS |
2396 | /* Delete SCSI target and sdevs */ |
2397 | if (rport->scsi_target_id != -1) | |
c4028958 | 2398 | fc_starget_delete(&rport->stgt_delete_work); |
92740b24 JS |
2399 | |
2400 | /* | |
2401 | * Notify the driver that the rport is now dead. The LLDD will | |
2402 | * also guarantee that any communication to the rport is terminated | |
2403 | */ | |
2404 | if (i->f->dev_loss_tmo_callbk) | |
0f29b966 | 2405 | i->f->dev_loss_tmo_callbk(rport); |
0f29b966 | 2406 | |
aedf3497 JS |
2407 | transport_remove_device(dev); |
2408 | device_del(dev); | |
2409 | transport_destroy_device(dev); | |
3bdad7bd JS |
2410 | put_device(&shost->shost_gendev); /* for fc_host->rport list */ |
2411 | put_device(dev); /* for self-reference */ | |
aedf3497 JS |
2412 | } |
2413 | ||
2414 | ||
1da177e4 LT |
2415 | /** |
2416 | * fc_rport_create - allocates and creates a remote FC port. | |
2417 | * @shost: scsi host the remote port is connected to. | |
2418 | * @channel: Channel on shost port connected to. | |
2419 | * @ids: The world wide names, fc address, and FC4 port | |
2420 | * roles for the remote port. | |
2421 | * | |
2422 | * Allocates and creates the remoter port structure, including the | |
2423 | * class and sysfs creation. | |
2424 | * | |
2425 | * Notes: | |
2426 | * This routine assumes no locks are held on entry. | |
eb44820c | 2427 | */ |
44818efb | 2428 | static struct fc_rport * |
1da177e4 LT |
2429 | fc_rport_create(struct Scsi_Host *shost, int channel, |
2430 | struct fc_rport_identifiers *ids) | |
2431 | { | |
aedf3497 | 2432 | struct fc_host_attrs *fc_host = shost_to_fc_host(shost); |
1da177e4 LT |
2433 | struct fc_internal *fci = to_fc_internal(shost->transportt); |
2434 | struct fc_rport *rport; | |
2435 | struct device *dev; | |
2436 | unsigned long flags; | |
2437 | int error; | |
2438 | size_t size; | |
2439 | ||
2440 | size = (sizeof(struct fc_rport) + fci->f->dd_fcrport_size); | |
24669f75 | 2441 | rport = kzalloc(size, GFP_KERNEL); |
1da177e4 | 2442 | if (unlikely(!rport)) { |
cadbd4a5 | 2443 | printk(KERN_ERR "%s: allocation failure\n", __func__); |
1da177e4 LT |
2444 | return NULL; |
2445 | } | |
1da177e4 LT |
2446 | |
2447 | rport->maxframe_size = -1; | |
2448 | rport->supported_classes = FC_COS_UNSPECIFIED; | |
2449 | rport->dev_loss_tmo = fc_dev_loss_tmo; | |
2450 | memcpy(&rport->node_name, &ids->node_name, sizeof(rport->node_name)); | |
2451 | memcpy(&rport->port_name, &ids->port_name, sizeof(rport->port_name)); | |
2452 | rport->port_id = ids->port_id; | |
2453 | rport->roles = ids->roles; | |
2454 | rport->port_state = FC_PORTSTATE_ONLINE; | |
2455 | if (fci->f->dd_fcrport_size) | |
2456 | rport->dd_data = &rport[1]; | |
2457 | rport->channel = channel; | |
0f29b966 | 2458 | rport->fast_io_fail_tmo = -1; |
1da177e4 | 2459 | |
c4028958 DH |
2460 | INIT_DELAYED_WORK(&rport->dev_loss_work, fc_timeout_deleted_rport); |
2461 | INIT_DELAYED_WORK(&rport->fail_io_work, fc_timeout_fail_rport_io); | |
2462 | INIT_WORK(&rport->scan_work, fc_scsi_scan_rport); | |
2463 | INIT_WORK(&rport->stgt_delete_work, fc_starget_delete); | |
2464 | INIT_WORK(&rport->rport_delete_work, fc_rport_final_delete); | |
1da177e4 LT |
2465 | |
2466 | spin_lock_irqsave(shost->host_lock, flags); | |
2467 | ||
2468 | rport->number = fc_host->next_rport_number++; | |
a53eb5e0 | 2469 | if (rport->roles & FC_PORT_ROLE_FCP_TARGET) |
1da177e4 LT |
2470 | rport->scsi_target_id = fc_host->next_target_id++; |
2471 | else | |
2472 | rport->scsi_target_id = -1; | |
aedf3497 | 2473 | list_add_tail(&rport->peers, &fc_host->rports); |
3bdad7bd | 2474 | get_device(&shost->shost_gendev); /* for fc_host->rport list */ |
1da177e4 LT |
2475 | |
2476 | spin_unlock_irqrestore(shost->host_lock, flags); | |
2477 | ||
2478 | dev = &rport->dev; | |
3bdad7bd JS |
2479 | device_initialize(dev); /* takes self reference */ |
2480 | dev->parent = get_device(&shost->shost_gendev); /* parent reference */ | |
1da177e4 LT |
2481 | dev->release = fc_rport_dev_release; |
2482 | sprintf(dev->bus_id, "rport-%d:%d-%d", | |
2483 | shost->host_no, channel, rport->number); | |
2484 | transport_setup_device(dev); | |
2485 | ||
2486 | error = device_add(dev); | |
2487 | if (error) { | |
2488 | printk(KERN_ERR "FC Remote Port device_add failed\n"); | |
2489 | goto delete_rport; | |
2490 | } | |
2491 | transport_add_device(dev); | |
2492 | transport_configure_device(dev); | |
2493 | ||
a53eb5e0 | 2494 | if (rport->roles & FC_PORT_ROLE_FCP_TARGET) { |
1da177e4 | 2495 | /* initiate a scan of the target */ |
aedf3497 | 2496 | rport->flags |= FC_RPORT_SCAN_PENDING; |
1da177e4 | 2497 | scsi_queue_work(shost, &rport->scan_work); |
aedf3497 | 2498 | } |
1da177e4 LT |
2499 | |
2500 | return rport; | |
2501 | ||
2502 | delete_rport: | |
2503 | transport_destroy_device(dev); | |
1da177e4 LT |
2504 | spin_lock_irqsave(shost->host_lock, flags); |
2505 | list_del(&rport->peers); | |
3bdad7bd | 2506 | put_device(&shost->shost_gendev); /* for fc_host->rport list */ |
1da177e4 LT |
2507 | spin_unlock_irqrestore(shost->host_lock, flags); |
2508 | put_device(dev->parent); | |
2509 | kfree(rport); | |
2510 | return NULL; | |
2511 | } | |
2512 | ||
2513 | /** | |
eb44820c | 2514 | * fc_remote_port_add - notify fc transport of the existence of a remote FC port. |
1da177e4 LT |
2515 | * @shost: scsi host the remote port is connected to. |
2516 | * @channel: Channel on shost port connected to. | |
2517 | * @ids: The world wide names, fc address, and FC4 port | |
2518 | * roles for the remote port. | |
2519 | * | |
2520 | * The LLDD calls this routine to notify the transport of the existence | |
2521 | * of a remote port. The LLDD provides the unique identifiers (wwpn,wwn) | |
2522 | * of the port, it's FC address (port_id), and the FC4 roles that are | |
2523 | * active for the port. | |
2524 | * | |
2525 | * For ports that are FCP targets (aka scsi targets), the FC transport | |
2526 | * maintains consistent target id bindings on behalf of the LLDD. | |
2527 | * A consistent target id binding is an assignment of a target id to | |
2528 | * a remote port identifier, which persists while the scsi host is | |
2529 | * attached. The remote port can disappear, then later reappear, and | |
2530 | * it's target id assignment remains the same. This allows for shifts | |
2531 | * in FC addressing (if binding by wwpn or wwnn) with no apparent | |
2532 | * changes to the scsi subsystem which is based on scsi host number and | |
2533 | * target id values. Bindings are only valid during the attachment of | |
2534 | * the scsi host. If the host detaches, then later re-attaches, target | |
2535 | * id bindings may change. | |
2536 | * | |
2537 | * This routine is responsible for returning a remote port structure. | |
2538 | * The routine will search the list of remote ports it maintains | |
2539 | * internally on behalf of consistent target id mappings. If found, the | |
2540 | * remote port structure will be reused. Otherwise, a new remote port | |
2541 | * structure will be allocated. | |
2542 | * | |
2543 | * Whenever a remote port is allocated, a new fc_remote_port class | |
2544 | * device is created. | |
2545 | * | |
2546 | * Should not be called from interrupt context. | |
2547 | * | |
2548 | * Notes: | |
2549 | * This routine assumes no locks are held on entry. | |
eb44820c | 2550 | */ |
1da177e4 LT |
2551 | struct fc_rport * |
2552 | fc_remote_port_add(struct Scsi_Host *shost, int channel, | |
2553 | struct fc_rport_identifiers *ids) | |
2554 | { | |
19a7b4ae | 2555 | struct fc_internal *fci = to_fc_internal(shost->transportt); |
aedf3497 | 2556 | struct fc_host_attrs *fc_host = shost_to_fc_host(shost); |
1da177e4 LT |
2557 | struct fc_rport *rport; |
2558 | unsigned long flags; | |
2559 | int match = 0; | |
2560 | ||
aedf3497 JS |
2561 | /* ensure any stgt delete functions are done */ |
2562 | fc_flush_work(shost); | |
2563 | ||
19a7b4ae JSEC |
2564 | /* |
2565 | * Search the list of "active" rports, for an rport that has been | |
2566 | * deleted, but we've held off the real delete while the target | |
2567 | * is in a "blocked" state. | |
2568 | */ | |
2569 | spin_lock_irqsave(shost->host_lock, flags); | |
2570 | ||
aedf3497 | 2571 | list_for_each_entry(rport, &fc_host->rports, peers) { |
19a7b4ae JSEC |
2572 | |
2573 | if ((rport->port_state == FC_PORTSTATE_BLOCKED) && | |
2574 | (rport->channel == channel)) { | |
2575 | ||
aedf3497 | 2576 | switch (fc_host->tgtid_bind_type) { |
19a7b4ae JSEC |
2577 | case FC_TGTID_BIND_BY_WWPN: |
2578 | case FC_TGTID_BIND_NONE: | |
2579 | if (rport->port_name == ids->port_name) | |
2580 | match = 1; | |
2581 | break; | |
2582 | case FC_TGTID_BIND_BY_WWNN: | |
2583 | if (rport->node_name == ids->node_name) | |
2584 | match = 1; | |
2585 | break; | |
2586 | case FC_TGTID_BIND_BY_ID: | |
2587 | if (rport->port_id == ids->port_id) | |
2588 | match = 1; | |
2589 | break; | |
2590 | } | |
2591 | ||
2592 | if (match) { | |
19a7b4ae JSEC |
2593 | |
2594 | memcpy(&rport->node_name, &ids->node_name, | |
2595 | sizeof(rport->node_name)); | |
2596 | memcpy(&rport->port_name, &ids->port_name, | |
2597 | sizeof(rport->port_name)); | |
2598 | rport->port_id = ids->port_id; | |
2599 | ||
2600 | rport->port_state = FC_PORTSTATE_ONLINE; | |
2601 | rport->roles = ids->roles; | |
2602 | ||
2603 | spin_unlock_irqrestore(shost->host_lock, flags); | |
2604 | ||
2605 | if (fci->f->dd_fcrport_size) | |
2606 | memset(rport->dd_data, 0, | |
2607 | fci->f->dd_fcrport_size); | |
2608 | ||
2609 | /* | |
92740b24 JS |
2610 | * If we were not a target, cancel the |
2611 | * io terminate and rport timers, and | |
2612 | * we're done. | |
2613 | * | |
2614 | * If we were a target, but our new role | |
2615 | * doesn't indicate a target, leave the | |
2616 | * timers running expecting the role to | |
2617 | * change as the target fully logs in. If | |
2618 | * it doesn't, the target will be torn down. | |
2619 | * | |
2620 | * If we were a target, and our role shows | |
2621 | * we're still a target, cancel the timers | |
2622 | * and kick off a scan. | |
19a7b4ae | 2623 | */ |
19a7b4ae | 2624 | |
92740b24 JS |
2625 | /* was a target, not in roles */ |
2626 | if ((rport->scsi_target_id != -1) && | |
a53eb5e0 | 2627 | (!(ids->roles & FC_PORT_ROLE_FCP_TARGET))) |
92740b24 | 2628 | return rport; |
19a7b4ae JSEC |
2629 | |
2630 | /* | |
92740b24 JS |
2631 | * Stop the fail io and dev_loss timers. |
2632 | * If they flush, the port_state will | |
2633 | * be checked and will NOOP the function. | |
19a7b4ae | 2634 | */ |
0f29b966 JS |
2635 | if (!cancel_delayed_work(&rport->fail_io_work)) |
2636 | fc_flush_devloss(shost); | |
92740b24 | 2637 | if (!cancel_delayed_work(&rport->dev_loss_work)) |
aedf3497 JS |
2638 | fc_flush_devloss(shost); |
2639 | ||
2640 | spin_lock_irqsave(shost->host_lock, flags); | |
2641 | ||
2642 | rport->flags &= ~FC_RPORT_DEVLOSS_PENDING; | |
19a7b4ae | 2643 | |
92740b24 JS |
2644 | /* if target, initiate a scan */ |
2645 | if (rport->scsi_target_id != -1) { | |
2646 | rport->flags |= FC_RPORT_SCAN_PENDING; | |
2647 | scsi_queue_work(shost, | |
2648 | &rport->scan_work); | |
2649 | spin_unlock_irqrestore(shost->host_lock, | |
2650 | flags); | |
2651 | scsi_target_unblock(&rport->dev); | |
2652 | } else | |
2653 | spin_unlock_irqrestore(shost->host_lock, | |
2654 | flags); | |
a0785edf | 2655 | |
19a7b4ae JSEC |
2656 | return rport; |
2657 | } | |
2658 | } | |
2659 | } | |
2660 | ||
92740b24 JS |
2661 | /* |
2662 | * Search the bindings array | |
2663 | * Note: if never a FCP target, you won't be on this list | |
2664 | */ | |
aedf3497 | 2665 | if (fc_host->tgtid_bind_type != FC_TGTID_BIND_NONE) { |
1da177e4 LT |
2666 | |
2667 | /* search for a matching consistent binding */ | |
2668 | ||
aedf3497 | 2669 | list_for_each_entry(rport, &fc_host->rport_bindings, |
1da177e4 LT |
2670 | peers) { |
2671 | if (rport->channel != channel) | |
2672 | continue; | |
2673 | ||
aedf3497 | 2674 | switch (fc_host->tgtid_bind_type) { |
1da177e4 LT |
2675 | case FC_TGTID_BIND_BY_WWPN: |
2676 | if (rport->port_name == ids->port_name) | |
2677 | match = 1; | |
2678 | break; | |
2679 | case FC_TGTID_BIND_BY_WWNN: | |
2680 | if (rport->node_name == ids->node_name) | |
2681 | match = 1; | |
2682 | break; | |
2683 | case FC_TGTID_BIND_BY_ID: | |
2684 | if (rport->port_id == ids->port_id) | |
2685 | match = 1; | |
2686 | break; | |
2687 | case FC_TGTID_BIND_NONE: /* to keep compiler happy */ | |
2688 | break; | |
2689 | } | |
2690 | ||
2691 | if (match) { | |
aedf3497 | 2692 | list_move_tail(&rport->peers, &fc_host->rports); |
1da177e4 LT |
2693 | break; |
2694 | } | |
2695 | } | |
2696 | ||
1da177e4 LT |
2697 | if (match) { |
2698 | memcpy(&rport->node_name, &ids->node_name, | |
2699 | sizeof(rport->node_name)); | |
2700 | memcpy(&rport->port_name, &ids->port_name, | |
2701 | sizeof(rport->port_name)); | |
2702 | rport->port_id = ids->port_id; | |
2703 | rport->roles = ids->roles; | |
2704 | rport->port_state = FC_PORTSTATE_ONLINE; | |
2705 | ||
19a7b4ae JSEC |
2706 | if (fci->f->dd_fcrport_size) |
2707 | memset(rport->dd_data, 0, | |
2708 | fci->f->dd_fcrport_size); | |
2709 | ||
a53eb5e0 | 2710 | if (rport->roles & FC_PORT_ROLE_FCP_TARGET) { |
1da177e4 | 2711 | /* initiate a scan of the target */ |
aedf3497 | 2712 | rport->flags |= FC_RPORT_SCAN_PENDING; |
1da177e4 | 2713 | scsi_queue_work(shost, &rport->scan_work); |
a0785edf JS |
2714 | spin_unlock_irqrestore(shost->host_lock, flags); |
2715 | scsi_target_unblock(&rport->dev); | |
2716 | } else | |
2717 | spin_unlock_irqrestore(shost->host_lock, flags); | |
1da177e4 LT |
2718 | |
2719 | return rport; | |
2720 | } | |
2721 | } | |
2722 | ||
19a7b4ae JSEC |
2723 | spin_unlock_irqrestore(shost->host_lock, flags); |
2724 | ||
1da177e4 LT |
2725 | /* No consistent binding found - create new remote port entry */ |
2726 | rport = fc_rport_create(shost, channel, ids); | |
2727 | ||
2728 | return rport; | |
2729 | } | |
2730 | EXPORT_SYMBOL(fc_remote_port_add); | |
2731 | ||
1da177e4 LT |
2732 | |
2733 | /** | |
eb44820c | 2734 | * fc_remote_port_delete - notifies the fc transport that a remote port is no longer in existence. |
1da177e4 LT |
2735 | * @rport: The remote port that no longer exists |
2736 | * | |
2737 | * The LLDD calls this routine to notify the transport that a remote | |
2738 | * port is no longer part of the topology. Note: Although a port | |
2739 | * may no longer be part of the topology, it may persist in the remote | |
19a7b4ae | 2740 | * ports displayed by the fc_host. We do this under 2 conditions: |
eb44820c | 2741 | * 1) If the port was a scsi target, we delay its deletion by "blocking" it. |
19a7b4ae JSEC |
2742 | * This allows the port to temporarily disappear, then reappear without |
2743 | * disrupting the SCSI device tree attached to it. During the "blocked" | |
2744 | * period the port will still exist. | |
eb44820c | 2745 | * 2) If the port was a scsi target and disappears for longer than we |
19a7b4ae JSEC |
2746 | * expect, we'll delete the port and the tear down the SCSI device tree |
2747 | * attached to it. However, we want to semi-persist the target id assigned | |
2748 | * to that port if it eventually does exist. The port structure will | |
2749 | * remain (although with minimal information) so that the target id | |
2750 | * bindings remails. | |
1da177e4 LT |
2751 | * |
2752 | * If the remote port is not an FCP Target, it will be fully torn down | |
2753 | * and deallocated, including the fc_remote_port class device. | |
2754 | * | |
19a7b4ae JSEC |
2755 | * If the remote port is an FCP Target, the port will be placed in a |
2756 | * temporary blocked state. From the LLDD's perspective, the rport no | |
2757 | * longer exists. From the SCSI midlayer's perspective, the SCSI target | |
2758 | * exists, but all sdevs on it are blocked from further I/O. The following | |
eb44820c RL |
2759 | * is then expected. |
2760 | * | |
19a7b4ae JSEC |
2761 | * If the remote port does not return (signaled by a LLDD call to |
2762 | * fc_remote_port_add()) within the dev_loss_tmo timeout, then the | |
2763 | * scsi target is removed - killing all outstanding i/o and removing the | |
2764 | * scsi devices attached ot it. The port structure will be marked Not | |
2765 | * Present and be partially cleared, leaving only enough information to | |
2766 | * recognize the remote port relative to the scsi target id binding if | |
2767 | * it later appears. The port will remain as long as there is a valid | |
2768 | * binding (e.g. until the user changes the binding type or unloads the | |
2769 | * scsi host with the binding). | |
1da177e4 | 2770 | * |
19a7b4ae JSEC |
2771 | * If the remote port returns within the dev_loss_tmo value (and matches |
2772 | * according to the target id binding type), the port structure will be | |
2773 | * reused. If it is no longer a SCSI target, the target will be torn | |
2774 | * down. If it continues to be a SCSI target, then the target will be | |
2775 | * unblocked (allowing i/o to be resumed), and a scan will be activated | |
2776 | * to ensure that all luns are detected. | |
2777 | * | |
2778 | * Called from normal process context only - cannot be called from interrupt. | |
1da177e4 LT |
2779 | * |
2780 | * Notes: | |
2781 | * This routine assumes no locks are held on entry. | |
eb44820c | 2782 | */ |
1da177e4 LT |
2783 | void |
2784 | fc_remote_port_delete(struct fc_rport *rport) | |
2785 | { | |
aedf3497 | 2786 | struct Scsi_Host *shost = rport_to_shost(rport); |
0f29b966 | 2787 | struct fc_internal *i = to_fc_internal(shost->transportt); |
19a7b4ae | 2788 | int timeout = rport->dev_loss_tmo; |
aedf3497 JS |
2789 | unsigned long flags; |
2790 | ||
2791 | /* | |
2792 | * No need to flush the fc_host work_q's, as all adds are synchronous. | |
2793 | * | |
2794 | * We do need to reclaim the rport scan work element, so eventually | |
2795 | * (in fc_rport_final_delete()) we'll flush the scsi host work_q if | |
2796 | * there's still a scan pending. | |
2797 | */ | |
2798 | ||
2799 | spin_lock_irqsave(shost->host_lock, flags); | |
1da177e4 | 2800 | |
92740b24 | 2801 | if (rport->port_state != FC_PORTSTATE_ONLINE) { |
aedf3497 | 2802 | spin_unlock_irqrestore(shost->host_lock, flags); |
1da177e4 LT |
2803 | return; |
2804 | } | |
2805 | ||
92740b24 JS |
2806 | /* |
2807 | * In the past, we if this was not an FCP-Target, we would | |
2808 | * unconditionally just jump to deleting the rport. | |
2809 | * However, rports can be used as node containers by the LLDD, | |
2810 | * and its not appropriate to just terminate the rport at the | |
2811 | * first sign of a loss in connectivity. The LLDD may want to | |
2812 | * send ELS traffic to re-validate the login. If the rport is | |
2813 | * immediately deleted, it makes it inappropriate for a node | |
2814 | * container. | |
2815 | * So... we now unconditionally wait dev_loss_tmo before | |
2816 | * destroying an rport. | |
2817 | */ | |
2818 | ||
aedf3497 JS |
2819 | rport->port_state = FC_PORTSTATE_BLOCKED; |
2820 | ||
2821 | rport->flags |= FC_RPORT_DEVLOSS_PENDING; | |
2822 | ||
2823 | spin_unlock_irqrestore(shost->host_lock, flags); | |
2824 | ||
7525236d FT |
2825 | if (rport->roles & FC_PORT_ROLE_FCP_INITIATOR && |
2826 | shost->active_mode & MODE_TARGET) | |
2827 | fc_tgt_it_nexus_destroy(shost, (unsigned long)rport); | |
2828 | ||
19a7b4ae | 2829 | scsi_target_block(&rport->dev); |
1da177e4 | 2830 | |
0f29b966 JS |
2831 | /* see if we need to kill io faster than waiting for device loss */ |
2832 | if ((rport->fast_io_fail_tmo != -1) && | |
2833 | (rport->fast_io_fail_tmo < timeout) && (i->f->terminate_rport_io)) | |
2834 | fc_queue_devloss_work(shost, &rport->fail_io_work, | |
2835 | rport->fast_io_fail_tmo * HZ); | |
2836 | ||
19a7b4ae | 2837 | /* cap the length the devices can be blocked until they are deleted */ |
aedf3497 | 2838 | fc_queue_devloss_work(shost, &rport->dev_loss_work, timeout * HZ); |
1da177e4 LT |
2839 | } |
2840 | EXPORT_SYMBOL(fc_remote_port_delete); | |
2841 | ||
2842 | /** | |
eb44820c | 2843 | * fc_remote_port_rolechg - notifies the fc transport that the roles on a remote may have changed. |
1da177e4 | 2844 | * @rport: The remote port that changed. |
eb44820c | 2845 | * @roles: New roles for this port. |
1da177e4 | 2846 | * |
eb44820c RL |
2847 | * Description: The LLDD calls this routine to notify the transport that the |
2848 | * roles on a remote port may have changed. The largest effect of this is | |
1da177e4 LT |
2849 | * if a port now becomes a FCP Target, it must be allocated a |
2850 | * scsi target id. If the port is no longer a FCP target, any | |
2851 | * scsi target id value assigned to it will persist in case the | |
2852 | * role changes back to include FCP Target. No changes in the scsi | |
2853 | * midlayer will be invoked if the role changes (in the expectation | |
2854 | * that the role will be resumed. If it doesn't normal error processing | |
2855 | * will take place). | |
2856 | * | |
2857 | * Should not be called from interrupt context. | |
2858 | * | |
2859 | * Notes: | |
2860 | * This routine assumes no locks are held on entry. | |
eb44820c | 2861 | */ |
1da177e4 LT |
2862 | void |
2863 | fc_remote_port_rolechg(struct fc_rport *rport, u32 roles) | |
2864 | { | |
2865 | struct Scsi_Host *shost = rport_to_shost(rport); | |
aedf3497 | 2866 | struct fc_host_attrs *fc_host = shost_to_fc_host(shost); |
1da177e4 LT |
2867 | unsigned long flags; |
2868 | int create = 0; | |
7525236d | 2869 | int ret; |
1da177e4 | 2870 | |
1da177e4 | 2871 | spin_lock_irqsave(shost->host_lock, flags); |
a53eb5e0 | 2872 | if (roles & FC_PORT_ROLE_FCP_TARGET) { |
19a7b4ae JSEC |
2873 | if (rport->scsi_target_id == -1) { |
2874 | rport->scsi_target_id = fc_host->next_target_id++; | |
2875 | create = 1; | |
a53eb5e0 | 2876 | } else if (!(rport->roles & FC_PORT_ROLE_FCP_TARGET)) |
19a7b4ae | 2877 | create = 1; |
7525236d FT |
2878 | } else if (shost->active_mode & MODE_TARGET) { |
2879 | ret = fc_tgt_it_nexus_create(shost, (unsigned long)rport, | |
2880 | (char *)&rport->node_name); | |
2881 | if (ret) | |
2882 | printk(KERN_ERR "FC Remore Port tgt nexus failed %d\n", | |
2883 | ret); | |
1da177e4 | 2884 | } |
1da177e4 | 2885 | |
19a7b4ae JSEC |
2886 | rport->roles = roles; |
2887 | ||
aedf3497 JS |
2888 | spin_unlock_irqrestore(shost->host_lock, flags); |
2889 | ||
19a7b4ae JSEC |
2890 | if (create) { |
2891 | /* | |
2892 | * There may have been a delete timer running on the | |
2893 | * port. Ensure that it is cancelled as we now know | |
2894 | * the port is an FCP Target. | |
2895 | * Note: we know the rport is exists and in an online | |
2896 | * state as the LLDD would not have had an rport | |
2897 | * reference to pass us. | |
2898 | * | |
2899 | * Take no action on the del_timer failure as the state | |
2900 | * machine state change will validate the | |
2901 | * transaction. | |
2902 | */ | |
0f29b966 JS |
2903 | if (!cancel_delayed_work(&rport->fail_io_work)) |
2904 | fc_flush_devloss(shost); | |
19a7b4ae | 2905 | if (!cancel_delayed_work(&rport->dev_loss_work)) |
aedf3497 JS |
2906 | fc_flush_devloss(shost); |
2907 | ||
2908 | spin_lock_irqsave(shost->host_lock, flags); | |
2909 | rport->flags &= ~FC_RPORT_DEVLOSS_PENDING; | |
2910 | spin_unlock_irqrestore(shost->host_lock, flags); | |
2911 | ||
2912 | /* ensure any stgt delete functions are done */ | |
2913 | fc_flush_work(shost); | |
19a7b4ae | 2914 | |
1da177e4 | 2915 | /* initiate a scan of the target */ |
aedf3497 JS |
2916 | spin_lock_irqsave(shost->host_lock, flags); |
2917 | rport->flags |= FC_RPORT_SCAN_PENDING; | |
1da177e4 | 2918 | scsi_queue_work(shost, &rport->scan_work); |
aedf3497 | 2919 | spin_unlock_irqrestore(shost->host_lock, flags); |
a0785edf | 2920 | scsi_target_unblock(&rport->dev); |
19a7b4ae | 2921 | } |
1da177e4 LT |
2922 | } |
2923 | EXPORT_SYMBOL(fc_remote_port_rolechg); | |
2924 | ||
2925 | /** | |
eb44820c | 2926 | * fc_timeout_deleted_rport - Timeout handler for a deleted remote port. |
92740b24 | 2927 | * @work: rport target that failed to reappear in the allotted time. |
eb44820c RL |
2928 | * |
2929 | * Description: An attempt to delete a remote port blocks, and if it fails | |
2930 | * to return in the allotted time this gets called. | |
2931 | */ | |
1da177e4 | 2932 | static void |
c4028958 | 2933 | fc_timeout_deleted_rport(struct work_struct *work) |
1da177e4 | 2934 | { |
c4028958 DH |
2935 | struct fc_rport *rport = |
2936 | container_of(work, struct fc_rport, dev_loss_work.work); | |
19a7b4ae | 2937 | struct Scsi_Host *shost = rport_to_shost(rport); |
aedf3497 | 2938 | struct fc_host_attrs *fc_host = shost_to_fc_host(shost); |
19a7b4ae | 2939 | unsigned long flags; |
1da177e4 | 2940 | |
19a7b4ae | 2941 | spin_lock_irqsave(shost->host_lock, flags); |
1da177e4 | 2942 | |
aedf3497 JS |
2943 | rport->flags &= ~FC_RPORT_DEVLOSS_PENDING; |
2944 | ||
1da177e4 | 2945 | /* |
92740b24 JS |
2946 | * If the port is ONLINE, then it came back. If it was a SCSI |
2947 | * target, validate it still is. If not, tear down the | |
2948 | * scsi_target on it. | |
1da177e4 | 2949 | */ |
aedf3497 | 2950 | if ((rport->port_state == FC_PORTSTATE_ONLINE) && |
92740b24 | 2951 | (rport->scsi_target_id != -1) && |
a53eb5e0 | 2952 | !(rport->roles & FC_PORT_ROLE_FCP_TARGET)) { |
19a7b4ae | 2953 | dev_printk(KERN_ERR, &rport->dev, |
aedf3497 JS |
2954 | "blocked FC remote port time out: no longer" |
2955 | " a FCP target, removing starget\n"); | |
aedf3497 | 2956 | spin_unlock_irqrestore(shost->host_lock, flags); |
a0785edf JS |
2957 | scsi_target_unblock(&rport->dev); |
2958 | fc_queue_work(shost, &rport->stgt_delete_work); | |
19a7b4ae JSEC |
2959 | return; |
2960 | } | |
1da177e4 | 2961 | |
92740b24 | 2962 | /* NOOP state - we're flushing workq's */ |
19a7b4ae JSEC |
2963 | if (rport->port_state != FC_PORTSTATE_BLOCKED) { |
2964 | spin_unlock_irqrestore(shost->host_lock, flags); | |
2965 | dev_printk(KERN_ERR, &rport->dev, | |
92740b24 JS |
2966 | "blocked FC remote port time out: leaving" |
2967 | " rport%s alone\n", | |
2968 | (rport->scsi_target_id != -1) ? " and starget" : ""); | |
19a7b4ae JSEC |
2969 | return; |
2970 | } | |
1da177e4 | 2971 | |
92740b24 JS |
2972 | if ((fc_host->tgtid_bind_type == FC_TGTID_BIND_NONE) || |
2973 | (rport->scsi_target_id == -1)) { | |
aedf3497 JS |
2974 | list_del(&rport->peers); |
2975 | rport->port_state = FC_PORTSTATE_DELETED; | |
19a7b4ae | 2976 | dev_printk(KERN_ERR, &rport->dev, |
92740b24 JS |
2977 | "blocked FC remote port time out: removing" |
2978 | " rport%s\n", | |
2979 | (rport->scsi_target_id != -1) ? " and starget" : ""); | |
aedf3497 JS |
2980 | fc_queue_work(shost, &rport->rport_delete_work); |
2981 | spin_unlock_irqrestore(shost->host_lock, flags); | |
19a7b4ae JSEC |
2982 | return; |
2983 | } | |
1da177e4 | 2984 | |
19a7b4ae JSEC |
2985 | dev_printk(KERN_ERR, &rport->dev, |
2986 | "blocked FC remote port time out: removing target and " | |
2987 | "saving binding\n"); | |
2988 | ||
aedf3497 | 2989 | list_move_tail(&rport->peers, &fc_host->rport_bindings); |
1da177e4 LT |
2990 | |
2991 | /* | |
19a7b4ae JSEC |
2992 | * Note: We do not remove or clear the hostdata area. This allows |
2993 | * host-specific target data to persist along with the | |
2994 | * scsi_target_id. It's up to the host to manage it's hostdata area. | |
1da177e4 | 2995 | */ |
1da177e4 | 2996 | |
19a7b4ae JSEC |
2997 | /* |
2998 | * Reinitialize port attributes that may change if the port comes back. | |
2999 | */ | |
3000 | rport->maxframe_size = -1; | |
3001 | rport->supported_classes = FC_COS_UNSPECIFIED; | |
a53eb5e0 | 3002 | rport->roles = FC_PORT_ROLE_UNKNOWN; |
aedf3497 | 3003 | rport->port_state = FC_PORTSTATE_NOTPRESENT; |
1da177e4 | 3004 | |
19a7b4ae | 3005 | /* remove the identifiers that aren't used in the consisting binding */ |
aedf3497 | 3006 | switch (fc_host->tgtid_bind_type) { |
19a7b4ae JSEC |
3007 | case FC_TGTID_BIND_BY_WWPN: |
3008 | rport->node_name = -1; | |
3009 | rport->port_id = -1; | |
3010 | break; | |
3011 | case FC_TGTID_BIND_BY_WWNN: | |
3012 | rport->port_name = -1; | |
3013 | rport->port_id = -1; | |
3014 | break; | |
3015 | case FC_TGTID_BIND_BY_ID: | |
3016 | rport->node_name = -1; | |
3017 | rport->port_name = -1; | |
3018 | break; | |
3019 | case FC_TGTID_BIND_NONE: /* to keep compiler happy */ | |
3020 | break; | |
3021 | } | |
3022 | ||
19a7b4ae JSEC |
3023 | /* |
3024 | * As this only occurs if the remote port (scsi target) | |
3025 | * went away and didn't come back - we'll remove | |
3026 | * all attached scsi devices. | |
3027 | */ | |
42e33148 | 3028 | spin_unlock_irqrestore(shost->host_lock, flags); |
a0785edf JS |
3029 | |
3030 | scsi_target_unblock(&rport->dev); | |
3031 | fc_queue_work(shost, &rport->stgt_delete_work); | |
1da177e4 | 3032 | } |
1da177e4 | 3033 | |
0f29b966 | 3034 | /** |
eb44820c | 3035 | * fc_timeout_fail_rport_io - Timeout handler for a fast io failing on a disconnected SCSI target. |
c4028958 | 3036 | * @work: rport to terminate io on. |
0f29b966 JS |
3037 | * |
3038 | * Notes: Only requests the failure of the io, not that all are flushed | |
3039 | * prior to returning. | |
eb44820c | 3040 | */ |
0f29b966 | 3041 | static void |
c4028958 | 3042 | fc_timeout_fail_rport_io(struct work_struct *work) |
0f29b966 | 3043 | { |
c4028958 DH |
3044 | struct fc_rport *rport = |
3045 | container_of(work, struct fc_rport, fail_io_work.work); | |
0f29b966 JS |
3046 | struct Scsi_Host *shost = rport_to_shost(rport); |
3047 | struct fc_internal *i = to_fc_internal(shost->transportt); | |
3048 | ||
3049 | if (rport->port_state != FC_PORTSTATE_BLOCKED) | |
3050 | return; | |
3051 | ||
3052 | i->f->terminate_rport_io(rport); | |
3053 | } | |
3054 | ||
1da177e4 LT |
3055 | /** |
3056 | * fc_scsi_scan_rport - called to perform a scsi scan on a remote port. | |
c4028958 | 3057 | * @work: remote port to be scanned. |
eb44820c | 3058 | */ |
1da177e4 | 3059 | static void |
c4028958 | 3060 | fc_scsi_scan_rport(struct work_struct *work) |
1da177e4 | 3061 | { |
c4028958 DH |
3062 | struct fc_rport *rport = |
3063 | container_of(work, struct fc_rport, scan_work); | |
aedf3497 | 3064 | struct Scsi_Host *shost = rport_to_shost(rport); |
03f002f7 | 3065 | struct fc_internal *i = to_fc_internal(shost->transportt); |
42e33148 JSEC |
3066 | unsigned long flags; |
3067 | ||
aedf3497 | 3068 | if ((rport->port_state == FC_PORTSTATE_ONLINE) && |
03f002f7 CS |
3069 | (rport->roles & FC_PORT_ROLE_FCP_TARGET) && |
3070 | !(i->f->disable_target_scan)) { | |
aedf3497 JS |
3071 | scsi_scan_target(&rport->dev, rport->channel, |
3072 | rport->scsi_target_id, SCAN_WILD_CARD, 1); | |
42e33148 | 3073 | } |
aedf3497 JS |
3074 | |
3075 | spin_lock_irqsave(shost->host_lock, flags); | |
3076 | rport->flags &= ~FC_RPORT_SCAN_PENDING; | |
42e33148 JSEC |
3077 | spin_unlock_irqrestore(shost->host_lock, flags); |
3078 | } | |
3079 | ||
3080 | ||
a53eb5e0 | 3081 | /** |
a30c3f69 | 3082 | * fc_vport_setup - allocates and creates a FC virtual port. |
a53eb5e0 JS |
3083 | * @shost: scsi host the virtual port is connected to. |
3084 | * @channel: Channel on shost port connected to. | |
3085 | * @pdev: parent device for vport | |
3086 | * @ids: The world wide names, FC4 port roles, etc for | |
3087 | * the virtual port. | |
3088 | * @ret_vport: The pointer to the created vport. | |
3089 | * | |
3090 | * Allocates and creates the vport structure, calls the parent host | |
3091 | * to instantiate the vport, the completes w/ class and sysfs creation. | |
3092 | * | |
3093 | * Notes: | |
3094 | * This routine assumes no locks are held on entry. | |
eb44820c | 3095 | */ |
a53eb5e0 | 3096 | static int |
a30c3f69 | 3097 | fc_vport_setup(struct Scsi_Host *shost, int channel, struct device *pdev, |
a53eb5e0 JS |
3098 | struct fc_vport_identifiers *ids, struct fc_vport **ret_vport) |
3099 | { | |
3100 | struct fc_host_attrs *fc_host = shost_to_fc_host(shost); | |
3101 | struct fc_internal *fci = to_fc_internal(shost->transportt); | |
3102 | struct fc_vport *vport; | |
3103 | struct device *dev; | |
3104 | unsigned long flags; | |
3105 | size_t size; | |
3106 | int error; | |
3107 | ||
3108 | *ret_vport = NULL; | |
3109 | ||
3110 | if ( ! fci->f->vport_create) | |
3111 | return -ENOENT; | |
3112 | ||
3113 | size = (sizeof(struct fc_vport) + fci->f->dd_fcvport_size); | |
3114 | vport = kzalloc(size, GFP_KERNEL); | |
3115 | if (unlikely(!vport)) { | |
cadbd4a5 | 3116 | printk(KERN_ERR "%s: allocation failure\n", __func__); |
a53eb5e0 JS |
3117 | return -ENOMEM; |
3118 | } | |
3119 | ||
3120 | vport->vport_state = FC_VPORT_UNKNOWN; | |
3121 | vport->vport_last_state = FC_VPORT_UNKNOWN; | |
3122 | vport->node_name = ids->node_name; | |
3123 | vport->port_name = ids->port_name; | |
3124 | vport->roles = ids->roles; | |
3125 | vport->vport_type = ids->vport_type; | |
3126 | if (fci->f->dd_fcvport_size) | |
3127 | vport->dd_data = &vport[1]; | |
3128 | vport->shost = shost; | |
3129 | vport->channel = channel; | |
3130 | vport->flags = FC_VPORT_CREATING; | |
9ef3e4a4 | 3131 | INIT_WORK(&vport->vport_delete_work, fc_vport_sched_delete); |
a53eb5e0 JS |
3132 | |
3133 | spin_lock_irqsave(shost->host_lock, flags); | |
3134 | ||
3135 | if (fc_host->npiv_vports_inuse >= fc_host->max_npiv_vports) { | |
3136 | spin_unlock_irqrestore(shost->host_lock, flags); | |
3137 | kfree(vport); | |
3138 | return -ENOSPC; | |
3139 | } | |
3140 | fc_host->npiv_vports_inuse++; | |
3141 | vport->number = fc_host->next_vport_number++; | |
3142 | list_add_tail(&vport->peers, &fc_host->vports); | |
3143 | get_device(&shost->shost_gendev); /* for fc_host->vport list */ | |
3144 | ||
3145 | spin_unlock_irqrestore(shost->host_lock, flags); | |
3146 | ||
3147 | dev = &vport->dev; | |
3148 | device_initialize(dev); /* takes self reference */ | |
3149 | dev->parent = get_device(pdev); /* takes parent reference */ | |
3150 | dev->release = fc_vport_dev_release; | |
3151 | sprintf(dev->bus_id, "vport-%d:%d-%d", | |
3152 | shost->host_no, channel, vport->number); | |
3153 | transport_setup_device(dev); | |
3154 | ||
3155 | error = device_add(dev); | |
3156 | if (error) { | |
3157 | printk(KERN_ERR "FC Virtual Port device_add failed\n"); | |
3158 | goto delete_vport; | |
3159 | } | |
3160 | transport_add_device(dev); | |
3161 | transport_configure_device(dev); | |
3162 | ||
3163 | error = fci->f->vport_create(vport, ids->disable); | |
3164 | if (error) { | |
3165 | printk(KERN_ERR "FC Virtual Port LLDD Create failed\n"); | |
3166 | goto delete_vport_all; | |
3167 | } | |
3168 | ||
3169 | /* | |
3170 | * if the parent isn't the physical adapter's Scsi_Host, ensure | |
3171 | * the Scsi_Host at least contains ia symlink to the vport. | |
3172 | */ | |
3173 | if (pdev != &shost->shost_gendev) { | |
3174 | error = sysfs_create_link(&shost->shost_gendev.kobj, | |
3175 | &dev->kobj, dev->bus_id); | |
3176 | if (error) | |
3177 | printk(KERN_ERR | |
3178 | "%s: Cannot create vport symlinks for " | |
3179 | "%s, err=%d\n", | |
cadbd4a5 | 3180 | __func__, dev->bus_id, error); |
a53eb5e0 JS |
3181 | } |
3182 | spin_lock_irqsave(shost->host_lock, flags); | |
3183 | vport->flags &= ~FC_VPORT_CREATING; | |
3184 | spin_unlock_irqrestore(shost->host_lock, flags); | |
3185 | ||
3186 | dev_printk(KERN_NOTICE, pdev, | |
3187 | "%s created via shost%d channel %d\n", dev->bus_id, | |
3188 | shost->host_no, channel); | |
3189 | ||
3190 | *ret_vport = vport; | |
3191 | ||
3192 | return 0; | |
3193 | ||
3194 | delete_vport_all: | |
3195 | transport_remove_device(dev); | |
3196 | device_del(dev); | |
3197 | delete_vport: | |
3198 | transport_destroy_device(dev); | |
3199 | spin_lock_irqsave(shost->host_lock, flags); | |
3200 | list_del(&vport->peers); | |
3201 | put_device(&shost->shost_gendev); /* for fc_host->vport list */ | |
3202 | fc_host->npiv_vports_inuse--; | |
3203 | spin_unlock_irqrestore(shost->host_lock, flags); | |
3204 | put_device(dev->parent); | |
3205 | kfree(vport); | |
3206 | ||
3207 | return error; | |
3208 | } | |
3209 | ||
a30c3f69 AV |
3210 | /** |
3211 | * fc_vport_create - Admin App or LLDD requests creation of a vport | |
3212 | * @shost: scsi host the virtual port is connected to. | |
3213 | * @channel: channel on shost port connected to. | |
3214 | * @ids: The world wide names, FC4 port roles, etc for | |
3215 | * the virtual port. | |
3216 | * | |
3217 | * Notes: | |
3218 | * This routine assumes no locks are held on entry. | |
3219 | */ | |
3220 | struct fc_vport * | |
3221 | fc_vport_create(struct Scsi_Host *shost, int channel, | |
3222 | struct fc_vport_identifiers *ids) | |
3223 | { | |
3224 | int stat; | |
3225 | struct fc_vport *vport; | |
3226 | ||
3227 | stat = fc_vport_setup(shost, channel, &shost->shost_gendev, | |
3228 | ids, &vport); | |
3229 | return stat ? NULL : vport; | |
3230 | } | |
3231 | EXPORT_SYMBOL(fc_vport_create); | |
a53eb5e0 JS |
3232 | |
3233 | /** | |
3234 | * fc_vport_terminate - Admin App or LLDD requests termination of a vport | |
3235 | * @vport: fc_vport to be terminated | |
3236 | * | |
3237 | * Calls the LLDD vport_delete() function, then deallocates and removes | |
3238 | * the vport from the shost and object tree. | |
3239 | * | |
3240 | * Notes: | |
3241 | * This routine assumes no locks are held on entry. | |
eb44820c | 3242 | */ |
a53eb5e0 JS |
3243 | int |
3244 | fc_vport_terminate(struct fc_vport *vport) | |
3245 | { | |
3246 | struct Scsi_Host *shost = vport_to_shost(vport); | |
3247 | struct fc_host_attrs *fc_host = shost_to_fc_host(shost); | |
3248 | struct fc_internal *i = to_fc_internal(shost->transportt); | |
3249 | struct device *dev = &vport->dev; | |
3250 | unsigned long flags; | |
3251 | int stat; | |
3252 | ||
3253 | spin_lock_irqsave(shost->host_lock, flags); | |
3254 | if (vport->flags & FC_VPORT_CREATING) { | |
3255 | spin_unlock_irqrestore(shost->host_lock, flags); | |
3256 | return -EBUSY; | |
3257 | } | |
3258 | if (vport->flags & (FC_VPORT_DEL)) { | |
3259 | spin_unlock_irqrestore(shost->host_lock, flags); | |
3260 | return -EALREADY; | |
3261 | } | |
3262 | vport->flags |= FC_VPORT_DELETING; | |
3263 | spin_unlock_irqrestore(shost->host_lock, flags); | |
3264 | ||
3265 | if (i->f->vport_delete) | |
3266 | stat = i->f->vport_delete(vport); | |
3267 | else | |
3268 | stat = -ENOENT; | |
3269 | ||
3270 | spin_lock_irqsave(shost->host_lock, flags); | |
3271 | vport->flags &= ~FC_VPORT_DELETING; | |
3272 | if (!stat) { | |
3273 | vport->flags |= FC_VPORT_DELETED; | |
3274 | list_del(&vport->peers); | |
3275 | fc_host->npiv_vports_inuse--; | |
3276 | put_device(&shost->shost_gendev); /* for fc_host->vport list */ | |
3277 | } | |
3278 | spin_unlock_irqrestore(shost->host_lock, flags); | |
3279 | ||
3280 | if (stat) | |
3281 | return stat; | |
3282 | ||
3283 | if (dev->parent != &shost->shost_gendev) | |
3284 | sysfs_remove_link(&shost->shost_gendev.kobj, dev->bus_id); | |
3285 | transport_remove_device(dev); | |
3286 | device_del(dev); | |
3287 | transport_destroy_device(dev); | |
3288 | ||
3289 | /* | |
3290 | * Removing our self-reference should mean our | |
3291 | * release function gets called, which will drop the remaining | |
3292 | * parent reference and free the data structure. | |
3293 | */ | |
3294 | put_device(dev); /* for self-reference */ | |
3295 | ||
3296 | return 0; /* SUCCESS */ | |
3297 | } | |
3298 | EXPORT_SYMBOL(fc_vport_terminate); | |
3299 | ||
9ef3e4a4 JS |
3300 | /** |
3301 | * fc_vport_sched_delete - workq-based delete request for a vport | |
9ef3e4a4 | 3302 | * @work: vport to be deleted. |
eb44820c | 3303 | */ |
9ef3e4a4 JS |
3304 | static void |
3305 | fc_vport_sched_delete(struct work_struct *work) | |
3306 | { | |
3307 | struct fc_vport *vport = | |
3308 | container_of(work, struct fc_vport, vport_delete_work); | |
3309 | int stat; | |
3310 | ||
3311 | stat = fc_vport_terminate(vport); | |
3312 | if (stat) | |
3313 | dev_printk(KERN_ERR, vport->dev.parent, | |
3314 | "%s: %s could not be deleted created via " | |
cadbd4a5 | 3315 | "shost%d channel %d - error %d\n", __func__, |
9ef3e4a4 JS |
3316 | vport->dev.bus_id, vport->shost->host_no, |
3317 | vport->channel, stat); | |
3318 | } | |
3319 | ||
a53eb5e0 | 3320 | |
9ef3e4a4 JS |
3321 | /* Original Author: Martin Hicks */ |
3322 | MODULE_AUTHOR("James Smart"); | |
1da177e4 LT |
3323 | MODULE_DESCRIPTION("FC Transport Attributes"); |
3324 | MODULE_LICENSE("GPL"); | |
3325 | ||
3326 | module_init(fc_transport_init); | |
3327 | module_exit(fc_transport_exit); |