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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> | |
5a0e3ad6 | 30 | #include <linux/slab.h> |
65d430fa | 31 | #include <linux/delay.h> |
ecc30990 | 32 | #include <linux/kernel.h> |
c00da4c9 | 33 | #include <linux/bsg-lib.h> |
1da177e4 LT |
34 | #include <scsi/scsi_device.h> |
35 | #include <scsi/scsi_host.h> | |
36 | #include <scsi/scsi_transport.h> | |
37 | #include <scsi/scsi_transport_fc.h> | |
c829c394 | 38 | #include <scsi/scsi_cmnd.h> |
84314fd4 JS |
39 | #include <net/netlink.h> |
40 | #include <scsi/scsi_netlink_fc.h> | |
9e4f5e29 | 41 | #include <scsi/scsi_bsg_fc.h> |
1da177e4 LT |
42 | #include "scsi_priv.h" |
43 | ||
aedf3497 | 44 | static int fc_queue_work(struct Scsi_Host *, struct work_struct *); |
9ef3e4a4 | 45 | static void fc_vport_sched_delete(struct work_struct *work); |
a30c3f69 | 46 | static int fc_vport_setup(struct Scsi_Host *shost, int channel, |
a53eb5e0 JS |
47 | struct device *pdev, struct fc_vport_identifiers *ids, |
48 | struct fc_vport **vport); | |
9e4f5e29 JS |
49 | static int fc_bsg_hostadd(struct Scsi_Host *, struct fc_host_attrs *); |
50 | static int fc_bsg_rportadd(struct Scsi_Host *, struct fc_rport *); | |
51 | static void fc_bsg_remove(struct request_queue *); | |
52 | static void fc_bsg_goose_queue(struct fc_rport *); | |
a53eb5e0 | 53 | |
43ca910a MC |
54 | /* |
55 | * Module Parameters | |
56 | */ | |
57 | ||
58 | /* | |
59 | * dev_loss_tmo: the default number of seconds that the FC transport | |
60 | * should insulate the loss of a remote port. | |
61 | * The maximum will be capped by the value of SCSI_DEVICE_BLOCK_MAX_TIMEOUT. | |
62 | */ | |
63 | static unsigned int fc_dev_loss_tmo = 60; /* seconds */ | |
64 | ||
65 | module_param_named(dev_loss_tmo, fc_dev_loss_tmo, uint, S_IRUGO|S_IWUSR); | |
66 | MODULE_PARM_DESC(dev_loss_tmo, | |
67 | "Maximum number of seconds that the FC transport should" | |
68 | " insulate the loss of a remote port. Once this value is" | |
69 | " exceeded, the scsi target is removed. Value should be" | |
70 | " between 1 and SCSI_DEVICE_BLOCK_MAX_TIMEOUT if" | |
71 | " fast_io_fail_tmo is not set."); | |
72 | ||
1da177e4 LT |
73 | /* |
74 | * Redefine so that we can have same named attributes in the | |
75 | * sdev/starget/host objects. | |
76 | */ | |
ee959b00 TJ |
77 | #define FC_DEVICE_ATTR(_prefix,_name,_mode,_show,_store) \ |
78 | struct device_attribute device_attr_##_prefix##_##_name = \ | |
1da177e4 LT |
79 | __ATTR(_name,_mode,_show,_store) |
80 | ||
81 | #define fc_enum_name_search(title, table_type, table) \ | |
82 | static const char *get_fc_##title##_name(enum table_type table_key) \ | |
83 | { \ | |
84 | int i; \ | |
85 | char *name = NULL; \ | |
86 | \ | |
6391a113 | 87 | for (i = 0; i < ARRAY_SIZE(table); i++) { \ |
1da177e4 LT |
88 | if (table[i].value == table_key) { \ |
89 | name = table[i].name; \ | |
90 | break; \ | |
91 | } \ | |
92 | } \ | |
93 | return name; \ | |
94 | } | |
95 | ||
96 | #define fc_enum_name_match(title, table_type, table) \ | |
97 | static int get_fc_##title##_match(const char *table_key, \ | |
98 | enum table_type *value) \ | |
99 | { \ | |
100 | int i; \ | |
101 | \ | |
6391a113 | 102 | for (i = 0; i < ARRAY_SIZE(table); i++) { \ |
1da177e4 LT |
103 | if (strncmp(table_key, table[i].name, \ |
104 | table[i].matchlen) == 0) { \ | |
105 | *value = table[i].value; \ | |
106 | return 0; /* success */ \ | |
107 | } \ | |
108 | } \ | |
109 | return 1; /* failure */ \ | |
110 | } | |
111 | ||
112 | ||
113 | /* Convert fc_port_type values to ascii string name */ | |
114 | static struct { | |
115 | enum fc_port_type value; | |
116 | char *name; | |
117 | } fc_port_type_names[] = { | |
118 | { FC_PORTTYPE_UNKNOWN, "Unknown" }, | |
119 | { FC_PORTTYPE_OTHER, "Other" }, | |
120 | { FC_PORTTYPE_NOTPRESENT, "Not Present" }, | |
121 | { FC_PORTTYPE_NPORT, "NPort (fabric via point-to-point)" }, | |
122 | { FC_PORTTYPE_NLPORT, "NLPort (fabric via loop)" }, | |
123 | { FC_PORTTYPE_LPORT, "LPort (private loop)" }, | |
951948a3 | 124 | { FC_PORTTYPE_PTP, "Point-To-Point (direct nport connection)" }, |
a53eb5e0 | 125 | { FC_PORTTYPE_NPIV, "NPIV VPORT" }, |
1da177e4 LT |
126 | }; |
127 | fc_enum_name_search(port_type, fc_port_type, fc_port_type_names) | |
128 | #define FC_PORTTYPE_MAX_NAMELEN 50 | |
129 | ||
a53eb5e0 JS |
130 | /* Reuse fc_port_type enum function for vport_type */ |
131 | #define get_fc_vport_type_name get_fc_port_type_name | |
132 | ||
1da177e4 | 133 | |
84314fd4 JS |
134 | /* Convert fc_host_event_code values to ascii string name */ |
135 | static const struct { | |
136 | enum fc_host_event_code value; | |
137 | char *name; | |
138 | } fc_host_event_code_names[] = { | |
139 | { FCH_EVT_LIP, "lip" }, | |
140 | { FCH_EVT_LINKUP, "link_up" }, | |
141 | { FCH_EVT_LINKDOWN, "link_down" }, | |
142 | { FCH_EVT_LIPRESET, "lip_reset" }, | |
143 | { FCH_EVT_RSCN, "rscn" }, | |
144 | { FCH_EVT_ADAPTER_CHANGE, "adapter_chg" }, | |
145 | { FCH_EVT_PORT_UNKNOWN, "port_unknown" }, | |
146 | { FCH_EVT_PORT_ONLINE, "port_online" }, | |
147 | { FCH_EVT_PORT_OFFLINE, "port_offline" }, | |
148 | { FCH_EVT_PORT_FABRIC, "port_fabric" }, | |
149 | { FCH_EVT_LINK_UNKNOWN, "link_unknown" }, | |
150 | { FCH_EVT_VENDOR_UNIQUE, "vendor_unique" }, | |
151 | }; | |
152 | fc_enum_name_search(host_event_code, fc_host_event_code, | |
153 | fc_host_event_code_names) | |
154 | #define FC_HOST_EVENT_CODE_MAX_NAMELEN 30 | |
155 | ||
156 | ||
1da177e4 LT |
157 | /* Convert fc_port_state values to ascii string name */ |
158 | static struct { | |
159 | enum fc_port_state value; | |
160 | char *name; | |
161 | } fc_port_state_names[] = { | |
162 | { FC_PORTSTATE_UNKNOWN, "Unknown" }, | |
163 | { FC_PORTSTATE_NOTPRESENT, "Not Present" }, | |
164 | { FC_PORTSTATE_ONLINE, "Online" }, | |
165 | { FC_PORTSTATE_OFFLINE, "Offline" }, | |
166 | { FC_PORTSTATE_BLOCKED, "Blocked" }, | |
167 | { FC_PORTSTATE_BYPASSED, "Bypassed" }, | |
168 | { FC_PORTSTATE_DIAGNOSTICS, "Diagnostics" }, | |
169 | { FC_PORTSTATE_LINKDOWN, "Linkdown" }, | |
170 | { FC_PORTSTATE_ERROR, "Error" }, | |
171 | { FC_PORTSTATE_LOOPBACK, "Loopback" }, | |
42e33148 | 172 | { FC_PORTSTATE_DELETED, "Deleted" }, |
1da177e4 LT |
173 | }; |
174 | fc_enum_name_search(port_state, fc_port_state, fc_port_state_names) | |
175 | #define FC_PORTSTATE_MAX_NAMELEN 20 | |
176 | ||
177 | ||
a53eb5e0 JS |
178 | /* Convert fc_vport_state values to ascii string name */ |
179 | static struct { | |
180 | enum fc_vport_state value; | |
181 | char *name; | |
182 | } fc_vport_state_names[] = { | |
183 | { FC_VPORT_UNKNOWN, "Unknown" }, | |
184 | { FC_VPORT_ACTIVE, "Active" }, | |
185 | { FC_VPORT_DISABLED, "Disabled" }, | |
186 | { FC_VPORT_LINKDOWN, "Linkdown" }, | |
187 | { FC_VPORT_INITIALIZING, "Initializing" }, | |
188 | { FC_VPORT_NO_FABRIC_SUPP, "No Fabric Support" }, | |
189 | { FC_VPORT_NO_FABRIC_RSCS, "No Fabric Resources" }, | |
190 | { FC_VPORT_FABRIC_LOGOUT, "Fabric Logout" }, | |
191 | { FC_VPORT_FABRIC_REJ_WWN, "Fabric Rejected WWN" }, | |
192 | { FC_VPORT_FAILED, "VPort Failed" }, | |
193 | }; | |
194 | fc_enum_name_search(vport_state, fc_vport_state, fc_vport_state_names) | |
195 | #define FC_VPORTSTATE_MAX_NAMELEN 24 | |
196 | ||
197 | /* Reuse fc_vport_state enum function for vport_last_state */ | |
198 | #define get_fc_vport_last_state_name get_fc_vport_state_name | |
199 | ||
200 | ||
1da177e4 | 201 | /* Convert fc_tgtid_binding_type values to ascii string name */ |
0ad78200 | 202 | static const struct { |
1da177e4 LT |
203 | enum fc_tgtid_binding_type value; |
204 | char *name; | |
205 | int matchlen; | |
206 | } fc_tgtid_binding_type_names[] = { | |
207 | { FC_TGTID_BIND_NONE, "none", 4 }, | |
208 | { FC_TGTID_BIND_BY_WWPN, "wwpn (World Wide Port Name)", 4 }, | |
209 | { FC_TGTID_BIND_BY_WWNN, "wwnn (World Wide Node Name)", 4 }, | |
210 | { FC_TGTID_BIND_BY_ID, "port_id (FC Address)", 7 }, | |
211 | }; | |
212 | fc_enum_name_search(tgtid_bind_type, fc_tgtid_binding_type, | |
213 | fc_tgtid_binding_type_names) | |
214 | fc_enum_name_match(tgtid_bind_type, fc_tgtid_binding_type, | |
215 | fc_tgtid_binding_type_names) | |
216 | #define FC_BINDTYPE_MAX_NAMELEN 30 | |
217 | ||
218 | ||
219 | #define fc_bitfield_name_search(title, table) \ | |
220 | static ssize_t \ | |
221 | get_fc_##title##_names(u32 table_key, char *buf) \ | |
222 | { \ | |
223 | char *prefix = ""; \ | |
224 | ssize_t len = 0; \ | |
225 | int i; \ | |
226 | \ | |
6391a113 | 227 | for (i = 0; i < ARRAY_SIZE(table); i++) { \ |
1da177e4 LT |
228 | if (table[i].value & table_key) { \ |
229 | len += sprintf(buf + len, "%s%s", \ | |
230 | prefix, table[i].name); \ | |
231 | prefix = ", "; \ | |
232 | } \ | |
233 | } \ | |
234 | len += sprintf(buf + len, "\n"); \ | |
235 | return len; \ | |
236 | } | |
237 | ||
238 | ||
239 | /* Convert FC_COS bit values to ascii string name */ | |
0ad78200 | 240 | static const struct { |
1da177e4 LT |
241 | u32 value; |
242 | char *name; | |
243 | } fc_cos_names[] = { | |
244 | { FC_COS_CLASS1, "Class 1" }, | |
245 | { FC_COS_CLASS2, "Class 2" }, | |
246 | { FC_COS_CLASS3, "Class 3" }, | |
247 | { FC_COS_CLASS4, "Class 4" }, | |
248 | { FC_COS_CLASS6, "Class 6" }, | |
249 | }; | |
250 | fc_bitfield_name_search(cos, fc_cos_names) | |
251 | ||
252 | ||
253 | /* Convert FC_PORTSPEED bit values to ascii string name */ | |
0ad78200 | 254 | static const struct { |
1da177e4 LT |
255 | u32 value; |
256 | char *name; | |
257 | } fc_port_speed_names[] = { | |
258 | { FC_PORTSPEED_1GBIT, "1 Gbit" }, | |
259 | { FC_PORTSPEED_2GBIT, "2 Gbit" }, | |
260 | { FC_PORTSPEED_4GBIT, "4 Gbit" }, | |
261 | { FC_PORTSPEED_10GBIT, "10 Gbit" }, | |
c3d2350a JS |
262 | { FC_PORTSPEED_8GBIT, "8 Gbit" }, |
263 | { FC_PORTSPEED_16GBIT, "16 Gbit" }, | |
624f28be | 264 | { FC_PORTSPEED_32GBIT, "32 Gbit" }, |
c21a2c1a DK |
265 | { FC_PORTSPEED_20GBIT, "20 Gbit" }, |
266 | { FC_PORTSPEED_40GBIT, "40 Gbit" }, | |
267 | { FC_PORTSPEED_50GBIT, "50 Gbit" }, | |
268 | { FC_PORTSPEED_100GBIT, "100 Gbit" }, | |
c749e6bc | 269 | { FC_PORTSPEED_25GBIT, "25 Gbit" }, |
1da177e4 LT |
270 | { FC_PORTSPEED_NOT_NEGOTIATED, "Not Negotiated" }, |
271 | }; | |
272 | fc_bitfield_name_search(port_speed, fc_port_speed_names) | |
273 | ||
274 | ||
275 | static int | |
276 | show_fc_fc4s (char *buf, u8 *fc4_list) | |
277 | { | |
278 | int i, len=0; | |
279 | ||
280 | for (i = 0; i < FC_FC4_LIST_SIZE; i++, fc4_list++) | |
281 | len += sprintf(buf + len , "0x%02x ", *fc4_list); | |
282 | len += sprintf(buf + len, "\n"); | |
283 | return len; | |
284 | } | |
285 | ||
286 | ||
a53eb5e0 | 287 | /* Convert FC_PORT_ROLE bit values to ascii string name */ |
0ad78200 | 288 | static const struct { |
1da177e4 LT |
289 | u32 value; |
290 | char *name; | |
a53eb5e0 | 291 | } fc_port_role_names[] = { |
0c3ae266 CA |
292 | { FC_PORT_ROLE_FCP_TARGET, "FCP Target" }, |
293 | { FC_PORT_ROLE_FCP_INITIATOR, "FCP Initiator" }, | |
294 | { FC_PORT_ROLE_IP_PORT, "IP Port" }, | |
295 | { FC_PORT_ROLE_FCP_DUMMY_INITIATOR, "FCP Dummy Initiator" }, | |
1da177e4 | 296 | }; |
a53eb5e0 | 297 | fc_bitfield_name_search(port_roles, fc_port_role_names) |
1da177e4 LT |
298 | |
299 | /* | |
300 | * Define roles that are specific to port_id. Values are relative to ROLE_MASK. | |
301 | */ | |
302 | #define FC_WELLKNOWN_PORTID_MASK 0xfffff0 | |
303 | #define FC_WELLKNOWN_ROLE_MASK 0x00000f | |
304 | #define FC_FPORT_PORTID 0x00000e | |
305 | #define FC_FABCTLR_PORTID 0x00000d | |
306 | #define FC_DIRSRVR_PORTID 0x00000c | |
307 | #define FC_TIMESRVR_PORTID 0x00000b | |
308 | #define FC_MGMTSRVR_PORTID 0x00000a | |
309 | ||
310 | ||
c4028958 DH |
311 | static void fc_timeout_deleted_rport(struct work_struct *work); |
312 | static void fc_timeout_fail_rport_io(struct work_struct *work); | |
313 | static void fc_scsi_scan_rport(struct work_struct *work); | |
1da177e4 LT |
314 | |
315 | /* | |
316 | * Attribute counts pre object type... | |
317 | * Increase these values if you add attributes | |
318 | */ | |
319 | #define FC_STARGET_NUM_ATTRS 3 | |
0f29b966 | 320 | #define FC_RPORT_NUM_ATTRS 10 |
a53eb5e0 | 321 | #define FC_VPORT_NUM_ATTRS 9 |
bb8ef587 | 322 | #define FC_HOST_NUM_ATTRS 29 |
1da177e4 LT |
323 | |
324 | struct fc_internal { | |
325 | struct scsi_transport_template t; | |
326 | struct fc_function_template *f; | |
327 | ||
328 | /* | |
329 | * For attributes : each object has : | |
330 | * An array of the actual attributes structures | |
331 | * An array of null-terminated pointers to the attribute | |
332 | * structures - used for mid-layer interaction. | |
333 | * | |
334 | * The attribute containers for the starget and host are are | |
335 | * part of the midlayer. As the remote port is specific to the | |
336 | * fc transport, we must provide the attribute container. | |
337 | */ | |
ee959b00 | 338 | struct device_attribute private_starget_attrs[ |
1da177e4 | 339 | FC_STARGET_NUM_ATTRS]; |
ee959b00 | 340 | struct device_attribute *starget_attrs[FC_STARGET_NUM_ATTRS + 1]; |
1da177e4 | 341 | |
ee959b00 TJ |
342 | struct device_attribute private_host_attrs[FC_HOST_NUM_ATTRS]; |
343 | struct device_attribute *host_attrs[FC_HOST_NUM_ATTRS + 1]; | |
1da177e4 LT |
344 | |
345 | struct transport_container rport_attr_cont; | |
ee959b00 TJ |
346 | struct device_attribute private_rport_attrs[FC_RPORT_NUM_ATTRS]; |
347 | struct device_attribute *rport_attrs[FC_RPORT_NUM_ATTRS + 1]; | |
a53eb5e0 JS |
348 | |
349 | struct transport_container vport_attr_cont; | |
ee959b00 TJ |
350 | struct device_attribute private_vport_attrs[FC_VPORT_NUM_ATTRS]; |
351 | struct device_attribute *vport_attrs[FC_VPORT_NUM_ATTRS + 1]; | |
1da177e4 LT |
352 | }; |
353 | ||
354 | #define to_fc_internal(tmpl) container_of(tmpl, struct fc_internal, t) | |
355 | ||
d0a7e574 | 356 | static int fc_target_setup(struct transport_container *tc, struct device *dev, |
ee959b00 | 357 | struct device *cdev) |
1da177e4 LT |
358 | { |
359 | struct scsi_target *starget = to_scsi_target(dev); | |
360 | struct fc_rport *rport = starget_to_rport(starget); | |
361 | ||
362 | /* | |
363 | * if parent is remote port, use values from remote port. | |
364 | * Otherwise, this host uses the fc_transport, but not the | |
365 | * remote port interface. As such, initialize to known non-values. | |
366 | */ | |
367 | if (rport) { | |
368 | fc_starget_node_name(starget) = rport->node_name; | |
369 | fc_starget_port_name(starget) = rport->port_name; | |
370 | fc_starget_port_id(starget) = rport->port_id; | |
371 | } else { | |
372 | fc_starget_node_name(starget) = -1; | |
373 | fc_starget_port_name(starget) = -1; | |
374 | fc_starget_port_id(starget) = -1; | |
375 | } | |
376 | ||
377 | return 0; | |
378 | } | |
379 | ||
380 | static DECLARE_TRANSPORT_CLASS(fc_transport_class, | |
381 | "fc_transport", | |
382 | fc_target_setup, | |
383 | NULL, | |
384 | NULL); | |
385 | ||
d0a7e574 | 386 | static int fc_host_setup(struct transport_container *tc, struct device *dev, |
ee959b00 | 387 | struct device *cdev) |
1da177e4 LT |
388 | { |
389 | struct Scsi_Host *shost = dev_to_shost(dev); | |
aedf3497 | 390 | struct fc_host_attrs *fc_host = shost_to_fc_host(shost); |
1da177e4 | 391 | |
9ef3e4a4 | 392 | /* |
1da177e4 LT |
393 | * Set default values easily detected by the midlayer as |
394 | * failure cases. The scsi lldd is responsible for initializing | |
395 | * all transport attributes to valid values per host. | |
396 | */ | |
aedf3497 JS |
397 | fc_host->node_name = -1; |
398 | fc_host->port_name = -1; | |
399 | fc_host->permanent_port_name = -1; | |
400 | fc_host->supported_classes = FC_COS_UNSPECIFIED; | |
401 | memset(fc_host->supported_fc4s, 0, | |
402 | sizeof(fc_host->supported_fc4s)); | |
aedf3497 JS |
403 | fc_host->supported_speeds = FC_PORTSPEED_UNKNOWN; |
404 | fc_host->maxframe_size = -1; | |
a53eb5e0 | 405 | fc_host->max_npiv_vports = 0; |
aedf3497 JS |
406 | memset(fc_host->serial_number, 0, |
407 | sizeof(fc_host->serial_number)); | |
bb8ef587 NP |
408 | memset(fc_host->manufacturer, 0, |
409 | sizeof(fc_host->manufacturer)); | |
410 | memset(fc_host->model, 0, | |
411 | sizeof(fc_host->model)); | |
412 | memset(fc_host->model_description, 0, | |
413 | sizeof(fc_host->model_description)); | |
414 | memset(fc_host->hardware_version, 0, | |
415 | sizeof(fc_host->hardware_version)); | |
416 | memset(fc_host->driver_version, 0, | |
417 | sizeof(fc_host->driver_version)); | |
418 | memset(fc_host->firmware_version, 0, | |
419 | sizeof(fc_host->firmware_version)); | |
420 | memset(fc_host->optionrom_version, 0, | |
421 | sizeof(fc_host->optionrom_version)); | |
aedf3497 JS |
422 | |
423 | fc_host->port_id = -1; | |
424 | fc_host->port_type = FC_PORTTYPE_UNKNOWN; | |
425 | fc_host->port_state = FC_PORTSTATE_UNKNOWN; | |
426 | memset(fc_host->active_fc4s, 0, | |
427 | sizeof(fc_host->active_fc4s)); | |
428 | fc_host->speed = FC_PORTSPEED_UNKNOWN; | |
429 | fc_host->fabric_name = -1; | |
b8d08210 JS |
430 | memset(fc_host->symbolic_name, 0, sizeof(fc_host->symbolic_name)); |
431 | memset(fc_host->system_hostname, 0, sizeof(fc_host->system_hostname)); | |
aedf3497 JS |
432 | |
433 | fc_host->tgtid_bind_type = FC_TGTID_BIND_BY_WWPN; | |
434 | ||
435 | INIT_LIST_HEAD(&fc_host->rports); | |
436 | INIT_LIST_HEAD(&fc_host->rport_bindings); | |
a53eb5e0 | 437 | INIT_LIST_HEAD(&fc_host->vports); |
aedf3497 JS |
438 | fc_host->next_rport_number = 0; |
439 | fc_host->next_target_id = 0; | |
a53eb5e0 JS |
440 | fc_host->next_vport_number = 0; |
441 | fc_host->npiv_vports_inuse = 0; | |
aedf3497 | 442 | |
aab0de24 KS |
443 | snprintf(fc_host->work_q_name, sizeof(fc_host->work_q_name), |
444 | "fc_wq_%d", shost->host_no); | |
d8537548 | 445 | fc_host->work_q = alloc_workqueue("%s", 0, 0, fc_host->work_q_name); |
aedf3497 JS |
446 | if (!fc_host->work_q) |
447 | return -ENOMEM; | |
448 | ||
43ca910a | 449 | fc_host->dev_loss_tmo = fc_dev_loss_tmo; |
aab0de24 KS |
450 | snprintf(fc_host->devloss_work_q_name, |
451 | sizeof(fc_host->devloss_work_q_name), | |
452 | "fc_dl_%d", shost->host_no); | |
d8537548 KC |
453 | fc_host->devloss_work_q = alloc_workqueue("%s", 0, 0, |
454 | fc_host->devloss_work_q_name); | |
aedf3497 JS |
455 | if (!fc_host->devloss_work_q) { |
456 | destroy_workqueue(fc_host->work_q); | |
457 | fc_host->work_q = NULL; | |
458 | return -ENOMEM; | |
459 | } | |
460 | ||
9e4f5e29 JS |
461 | fc_bsg_hostadd(shost, fc_host); |
462 | /* ignore any bsg add error - we just can't do sgio */ | |
463 | ||
464 | return 0; | |
465 | } | |
466 | ||
467 | static int fc_host_remove(struct transport_container *tc, struct device *dev, | |
468 | struct device *cdev) | |
469 | { | |
470 | struct Scsi_Host *shost = dev_to_shost(dev); | |
471 | struct fc_host_attrs *fc_host = shost_to_fc_host(shost); | |
472 | ||
473 | fc_bsg_remove(fc_host->rqst_q); | |
1da177e4 LT |
474 | return 0; |
475 | } | |
476 | ||
477 | static DECLARE_TRANSPORT_CLASS(fc_host_class, | |
478 | "fc_host", | |
479 | fc_host_setup, | |
9e4f5e29 | 480 | fc_host_remove, |
1da177e4 LT |
481 | NULL); |
482 | ||
483 | /* | |
484 | * Setup and Remove actions for remote ports are handled | |
485 | * in the service functions below. | |
486 | */ | |
487 | static DECLARE_TRANSPORT_CLASS(fc_rport_class, | |
488 | "fc_remote_ports", | |
489 | NULL, | |
490 | NULL, | |
491 | NULL); | |
492 | ||
a53eb5e0 JS |
493 | /* |
494 | * Setup and Remove actions for virtual ports are handled | |
495 | * in the service functions below. | |
496 | */ | |
497 | static DECLARE_TRANSPORT_CLASS(fc_vport_class, | |
498 | "fc_vports", | |
499 | NULL, | |
500 | NULL, | |
501 | NULL); | |
502 | ||
eb44820c | 503 | /* |
84314fd4 | 504 | * Netlink Infrastructure |
eb44820c | 505 | */ |
84314fd4 JS |
506 | |
507 | static atomic_t fc_event_seq; | |
508 | ||
509 | /** | |
510 | * fc_get_event_number - Obtain the next sequential FC event number | |
511 | * | |
512 | * Notes: | |
eb44820c | 513 | * We could have inlined this, but it would have required fc_event_seq to |
84314fd4 JS |
514 | * be exposed. For now, live with the subroutine call. |
515 | * Atomic used to avoid lock/unlock... | |
eb44820c | 516 | */ |
84314fd4 JS |
517 | u32 |
518 | fc_get_event_number(void) | |
519 | { | |
520 | return atomic_add_return(1, &fc_event_seq); | |
521 | } | |
522 | EXPORT_SYMBOL(fc_get_event_number); | |
523 | ||
524 | ||
525 | /** | |
526 | * fc_host_post_event - called to post an even on an fc_host. | |
84314fd4 JS |
527 | * @shost: host the event occurred on |
528 | * @event_number: fc event number obtained from get_fc_event_number() | |
529 | * @event_code: fc_host event being posted | |
530 | * @event_data: 32bits of data for the event being posted | |
531 | * | |
532 | * Notes: | |
533 | * This routine assumes no locks are held on entry. | |
eb44820c | 534 | */ |
84314fd4 JS |
535 | void |
536 | fc_host_post_event(struct Scsi_Host *shost, u32 event_number, | |
537 | enum fc_host_event_code event_code, u32 event_data) | |
538 | { | |
539 | struct sk_buff *skb; | |
540 | struct nlmsghdr *nlh; | |
541 | struct fc_nl_event *event; | |
542 | const char *name; | |
e07ebea0 | 543 | u32 len; |
84314fd4 JS |
544 | int err; |
545 | ||
546 | if (!scsi_nl_sock) { | |
547 | err = -ENOENT; | |
548 | goto send_fail; | |
549 | } | |
550 | ||
551 | len = FC_NL_MSGALIGN(sizeof(*event)); | |
84314fd4 | 552 | |
e07ebea0 | 553 | skb = nlmsg_new(len, GFP_KERNEL); |
84314fd4 JS |
554 | if (!skb) { |
555 | err = -ENOBUFS; | |
556 | goto send_fail; | |
557 | } | |
558 | ||
e07ebea0 | 559 | nlh = nlmsg_put(skb, 0, 0, SCSI_TRANSPORT_MSG, len, 0); |
84314fd4 JS |
560 | if (!nlh) { |
561 | err = -ENOBUFS; | |
562 | goto send_fail_skb; | |
563 | } | |
e07ebea0 | 564 | event = nlmsg_data(nlh); |
84314fd4 JS |
565 | |
566 | INIT_SCSI_NL_HDR(&event->snlh, SCSI_NL_TRANSPORT_FC, | |
567 | FC_NL_ASYNC_EVENT, len); | |
568 | event->seconds = get_seconds(); | |
569 | event->vendor_id = 0; | |
570 | event->host_no = shost->host_no; | |
571 | event->event_datalen = sizeof(u32); /* bytes */ | |
572 | event->event_num = event_number; | |
573 | event->event_code = event_code; | |
574 | event->event_data = event_data; | |
575 | ||
ff491a73 PNA |
576 | nlmsg_multicast(scsi_nl_sock, skb, 0, SCSI_NL_GRP_FC_EVENTS, |
577 | GFP_KERNEL); | |
84314fd4 JS |
578 | return; |
579 | ||
580 | send_fail_skb: | |
581 | kfree_skb(skb); | |
582 | send_fail: | |
583 | name = get_fc_host_event_code_name(event_code); | |
584 | printk(KERN_WARNING | |
585 | "%s: Dropped Event : host %d %s data 0x%08x - err %d\n", | |
cadbd4a5 | 586 | __func__, shost->host_no, |
84314fd4 JS |
587 | (name) ? name : "<unknown>", event_data, err); |
588 | return; | |
589 | } | |
590 | EXPORT_SYMBOL(fc_host_post_event); | |
591 | ||
592 | ||
593 | /** | |
eb44820c | 594 | * fc_host_post_vendor_event - called to post a vendor unique event on an fc_host |
84314fd4 JS |
595 | * @shost: host the event occurred on |
596 | * @event_number: fc event number obtained from get_fc_event_number() | |
597 | * @data_len: amount, in bytes, of vendor unique data | |
598 | * @data_buf: pointer to vendor unique data | |
eb44820c | 599 | * @vendor_id: Vendor id |
84314fd4 JS |
600 | * |
601 | * Notes: | |
602 | * This routine assumes no locks are held on entry. | |
eb44820c | 603 | */ |
84314fd4 JS |
604 | void |
605 | fc_host_post_vendor_event(struct Scsi_Host *shost, u32 event_number, | |
f14e2e29 | 606 | u32 data_len, char * data_buf, u64 vendor_id) |
84314fd4 JS |
607 | { |
608 | struct sk_buff *skb; | |
609 | struct nlmsghdr *nlh; | |
610 | struct fc_nl_event *event; | |
e07ebea0 | 611 | u32 len; |
84314fd4 JS |
612 | int err; |
613 | ||
614 | if (!scsi_nl_sock) { | |
615 | err = -ENOENT; | |
616 | goto send_vendor_fail; | |
617 | } | |
618 | ||
619 | len = FC_NL_MSGALIGN(sizeof(*event) + data_len); | |
84314fd4 | 620 | |
e07ebea0 | 621 | skb = nlmsg_new(len, GFP_KERNEL); |
84314fd4 JS |
622 | if (!skb) { |
623 | err = -ENOBUFS; | |
624 | goto send_vendor_fail; | |
625 | } | |
626 | ||
e07ebea0 | 627 | nlh = nlmsg_put(skb, 0, 0, SCSI_TRANSPORT_MSG, len, 0); |
84314fd4 JS |
628 | if (!nlh) { |
629 | err = -ENOBUFS; | |
630 | goto send_vendor_fail_skb; | |
631 | } | |
e07ebea0 | 632 | event = nlmsg_data(nlh); |
84314fd4 JS |
633 | |
634 | INIT_SCSI_NL_HDR(&event->snlh, SCSI_NL_TRANSPORT_FC, | |
635 | FC_NL_ASYNC_EVENT, len); | |
636 | event->seconds = get_seconds(); | |
637 | event->vendor_id = vendor_id; | |
638 | event->host_no = shost->host_no; | |
639 | event->event_datalen = data_len; /* bytes */ | |
640 | event->event_num = event_number; | |
641 | event->event_code = FCH_EVT_VENDOR_UNIQUE; | |
642 | memcpy(&event->event_data, data_buf, data_len); | |
643 | ||
ff491a73 PNA |
644 | nlmsg_multicast(scsi_nl_sock, skb, 0, SCSI_NL_GRP_FC_EVENTS, |
645 | GFP_KERNEL); | |
84314fd4 JS |
646 | return; |
647 | ||
648 | send_vendor_fail_skb: | |
649 | kfree_skb(skb); | |
650 | send_vendor_fail: | |
651 | printk(KERN_WARNING | |
652 | "%s: Dropped Event : host %d vendor_unique - err %d\n", | |
cadbd4a5 | 653 | __func__, shost->host_no, err); |
84314fd4 JS |
654 | return; |
655 | } | |
656 | EXPORT_SYMBOL(fc_host_post_vendor_event); | |
657 | ||
658 | ||
1da177e4 LT |
659 | |
660 | static __init int fc_transport_init(void) | |
661 | { | |
84314fd4 JS |
662 | int error; |
663 | ||
664 | atomic_set(&fc_event_seq, 0); | |
665 | ||
666 | error = transport_class_register(&fc_host_class); | |
a53eb5e0 JS |
667 | if (error) |
668 | return error; | |
669 | error = transport_class_register(&fc_vport_class); | |
1da177e4 | 670 | if (error) |
48de68a4 | 671 | goto unreg_host_class; |
1da177e4 LT |
672 | error = transport_class_register(&fc_rport_class); |
673 | if (error) | |
48de68a4 MC |
674 | goto unreg_vport_class; |
675 | error = transport_class_register(&fc_transport_class); | |
676 | if (error) | |
677 | goto unreg_rport_class; | |
678 | return 0; | |
679 | ||
680 | unreg_rport_class: | |
681 | transport_class_unregister(&fc_rport_class); | |
682 | unreg_vport_class: | |
683 | transport_class_unregister(&fc_vport_class); | |
684 | unreg_host_class: | |
685 | transport_class_unregister(&fc_host_class); | |
686 | return error; | |
1da177e4 LT |
687 | } |
688 | ||
689 | static void __exit fc_transport_exit(void) | |
690 | { | |
691 | transport_class_unregister(&fc_transport_class); | |
692 | transport_class_unregister(&fc_rport_class); | |
693 | transport_class_unregister(&fc_host_class); | |
a53eb5e0 | 694 | transport_class_unregister(&fc_vport_class); |
1da177e4 LT |
695 | } |
696 | ||
697 | /* | |
698 | * FC Remote Port Attribute Management | |
699 | */ | |
700 | ||
701 | #define fc_rport_show_function(field, format_string, sz, cast) \ | |
702 | static ssize_t \ | |
ee959b00 TJ |
703 | show_fc_rport_##field (struct device *dev, \ |
704 | struct device_attribute *attr, char *buf) \ | |
1da177e4 | 705 | { \ |
ee959b00 | 706 | struct fc_rport *rport = transport_class_to_rport(dev); \ |
1da177e4 LT |
707 | struct Scsi_Host *shost = rport_to_shost(rport); \ |
708 | struct fc_internal *i = to_fc_internal(shost->transportt); \ | |
19a7b4ae JSEC |
709 | if ((i->f->get_rport_##field) && \ |
710 | !((rport->port_state == FC_PORTSTATE_BLOCKED) || \ | |
42e33148 | 711 | (rport->port_state == FC_PORTSTATE_DELETED) || \ |
19a7b4ae | 712 | (rport->port_state == FC_PORTSTATE_NOTPRESENT))) \ |
1da177e4 LT |
713 | i->f->get_rport_##field(rport); \ |
714 | return snprintf(buf, sz, format_string, cast rport->field); \ | |
715 | } | |
716 | ||
717 | #define fc_rport_store_function(field) \ | |
718 | static ssize_t \ | |
ee959b00 TJ |
719 | store_fc_rport_##field(struct device *dev, \ |
720 | struct device_attribute *attr, \ | |
721 | const char *buf, size_t count) \ | |
1da177e4 LT |
722 | { \ |
723 | int val; \ | |
ee959b00 | 724 | struct fc_rport *rport = transport_class_to_rport(dev); \ |
1da177e4 LT |
725 | struct Scsi_Host *shost = rport_to_shost(rport); \ |
726 | struct fc_internal *i = to_fc_internal(shost->transportt); \ | |
0f29b966 | 727 | char *cp; \ |
19a7b4ae | 728 | if ((rport->port_state == FC_PORTSTATE_BLOCKED) || \ |
42e33148 | 729 | (rport->port_state == FC_PORTSTATE_DELETED) || \ |
19a7b4ae JSEC |
730 | (rport->port_state == FC_PORTSTATE_NOTPRESENT)) \ |
731 | return -EBUSY; \ | |
0f29b966 JS |
732 | val = simple_strtoul(buf, &cp, 0); \ |
733 | if (*cp && (*cp != '\n')) \ | |
734 | return -EINVAL; \ | |
1da177e4 LT |
735 | i->f->set_rport_##field(rport, val); \ |
736 | return count; \ | |
737 | } | |
738 | ||
739 | #define fc_rport_rd_attr(field, format_string, sz) \ | |
740 | fc_rport_show_function(field, format_string, sz, ) \ | |
ee959b00 | 741 | static FC_DEVICE_ATTR(rport, field, S_IRUGO, \ |
1da177e4 LT |
742 | show_fc_rport_##field, NULL) |
743 | ||
744 | #define fc_rport_rd_attr_cast(field, format_string, sz, cast) \ | |
745 | fc_rport_show_function(field, format_string, sz, (cast)) \ | |
ee959b00 | 746 | static FC_DEVICE_ATTR(rport, field, S_IRUGO, \ |
1da177e4 LT |
747 | show_fc_rport_##field, NULL) |
748 | ||
749 | #define fc_rport_rw_attr(field, format_string, sz) \ | |
750 | fc_rport_show_function(field, format_string, sz, ) \ | |
751 | fc_rport_store_function(field) \ | |
ee959b00 | 752 | static FC_DEVICE_ATTR(rport, field, S_IRUGO | S_IWUSR, \ |
1da177e4 LT |
753 | show_fc_rport_##field, \ |
754 | store_fc_rport_##field) | |
755 | ||
756 | ||
757 | #define fc_private_rport_show_function(field, format_string, sz, cast) \ | |
758 | static ssize_t \ | |
ee959b00 TJ |
759 | show_fc_rport_##field (struct device *dev, \ |
760 | struct device_attribute *attr, char *buf) \ | |
1da177e4 | 761 | { \ |
ee959b00 | 762 | struct fc_rport *rport = transport_class_to_rport(dev); \ |
1da177e4 LT |
763 | return snprintf(buf, sz, format_string, cast rport->field); \ |
764 | } | |
765 | ||
766 | #define fc_private_rport_rd_attr(field, format_string, sz) \ | |
767 | fc_private_rport_show_function(field, format_string, sz, ) \ | |
ee959b00 | 768 | static FC_DEVICE_ATTR(rport, field, S_IRUGO, \ |
1da177e4 LT |
769 | show_fc_rport_##field, NULL) |
770 | ||
771 | #define fc_private_rport_rd_attr_cast(field, format_string, sz, cast) \ | |
772 | fc_private_rport_show_function(field, format_string, sz, (cast)) \ | |
ee959b00 | 773 | static FC_DEVICE_ATTR(rport, field, S_IRUGO, \ |
1da177e4 LT |
774 | show_fc_rport_##field, NULL) |
775 | ||
776 | ||
777 | #define fc_private_rport_rd_enum_attr(title, maxlen) \ | |
778 | static ssize_t \ | |
ee959b00 TJ |
779 | show_fc_rport_##title (struct device *dev, \ |
780 | struct device_attribute *attr, char *buf) \ | |
1da177e4 | 781 | { \ |
ee959b00 | 782 | struct fc_rport *rport = transport_class_to_rport(dev); \ |
1da177e4 LT |
783 | const char *name; \ |
784 | name = get_fc_##title##_name(rport->title); \ | |
785 | if (!name) \ | |
786 | return -EINVAL; \ | |
787 | return snprintf(buf, maxlen, "%s\n", name); \ | |
788 | } \ | |
ee959b00 | 789 | static FC_DEVICE_ATTR(rport, title, S_IRUGO, \ |
1da177e4 LT |
790 | show_fc_rport_##title, NULL) |
791 | ||
792 | ||
793 | #define SETUP_RPORT_ATTRIBUTE_RD(field) \ | |
ee959b00 | 794 | i->private_rport_attrs[count] = device_attr_rport_##field; \ |
1da177e4 LT |
795 | i->private_rport_attrs[count].attr.mode = S_IRUGO; \ |
796 | i->private_rport_attrs[count].store = NULL; \ | |
797 | i->rport_attrs[count] = &i->private_rport_attrs[count]; \ | |
798 | if (i->f->show_rport_##field) \ | |
799 | count++ | |
800 | ||
801 | #define SETUP_PRIVATE_RPORT_ATTRIBUTE_RD(field) \ | |
ee959b00 | 802 | i->private_rport_attrs[count] = device_attr_rport_##field; \ |
1da177e4 LT |
803 | i->private_rport_attrs[count].attr.mode = S_IRUGO; \ |
804 | i->private_rport_attrs[count].store = NULL; \ | |
805 | i->rport_attrs[count] = &i->private_rport_attrs[count]; \ | |
806 | count++ | |
807 | ||
808 | #define SETUP_RPORT_ATTRIBUTE_RW(field) \ | |
ee959b00 | 809 | i->private_rport_attrs[count] = device_attr_rport_##field; \ |
1da177e4 LT |
810 | if (!i->f->set_rport_##field) { \ |
811 | i->private_rport_attrs[count].attr.mode = S_IRUGO; \ | |
812 | i->private_rport_attrs[count].store = NULL; \ | |
813 | } \ | |
814 | i->rport_attrs[count] = &i->private_rport_attrs[count]; \ | |
815 | if (i->f->show_rport_##field) \ | |
816 | count++ | |
817 | ||
0f29b966 JS |
818 | #define SETUP_PRIVATE_RPORT_ATTRIBUTE_RW(field) \ |
819 | { \ | |
ee959b00 | 820 | i->private_rport_attrs[count] = device_attr_rport_##field; \ |
0f29b966 JS |
821 | i->rport_attrs[count] = &i->private_rport_attrs[count]; \ |
822 | count++; \ | |
823 | } | |
824 | ||
1da177e4 LT |
825 | |
826 | /* The FC Transport Remote Port Attributes: */ | |
827 | ||
828 | /* Fixed Remote Port Attributes */ | |
829 | ||
830 | fc_private_rport_rd_attr(maxframe_size, "%u bytes\n", 20); | |
831 | ||
832 | static ssize_t | |
ee959b00 TJ |
833 | show_fc_rport_supported_classes (struct device *dev, |
834 | struct device_attribute *attr, char *buf) | |
1da177e4 | 835 | { |
ee959b00 | 836 | struct fc_rport *rport = transport_class_to_rport(dev); |
1da177e4 LT |
837 | if (rport->supported_classes == FC_COS_UNSPECIFIED) |
838 | return snprintf(buf, 20, "unspecified\n"); | |
839 | return get_fc_cos_names(rport->supported_classes, buf); | |
840 | } | |
ee959b00 | 841 | static FC_DEVICE_ATTR(rport, supported_classes, S_IRUGO, |
1da177e4 LT |
842 | show_fc_rport_supported_classes, NULL); |
843 | ||
844 | /* Dynamic Remote Port Attributes */ | |
845 | ||
19a7b4ae JSEC |
846 | /* |
847 | * dev_loss_tmo attribute | |
848 | */ | |
43ca910a MC |
849 | static int fc_str_to_dev_loss(const char *buf, unsigned long *val) |
850 | { | |
851 | char *cp; | |
852 | ||
853 | *val = simple_strtoul(buf, &cp, 0); | |
eea42270 | 854 | if (*cp && (*cp != '\n')) |
43ca910a MC |
855 | return -EINVAL; |
856 | /* | |
857 | * Check for overflow; dev_loss_tmo is u32 | |
858 | */ | |
859 | if (*val > UINT_MAX) | |
860 | return -EINVAL; | |
861 | ||
862 | return 0; | |
863 | } | |
864 | ||
865 | static int fc_rport_set_dev_loss_tmo(struct fc_rport *rport, | |
866 | unsigned long val) | |
19a7b4ae | 867 | { |
19a7b4ae JSEC |
868 | struct Scsi_Host *shost = rport_to_shost(rport); |
869 | struct fc_internal *i = to_fc_internal(shost->transportt); | |
43ca910a | 870 | |
19a7b4ae | 871 | if ((rport->port_state == FC_PORTSTATE_BLOCKED) || |
42e33148 | 872 | (rport->port_state == FC_PORTSTATE_DELETED) || |
19a7b4ae JSEC |
873 | (rport->port_state == FC_PORTSTATE_NOTPRESENT)) |
874 | return -EBUSY; | |
36dd288f HR |
875 | /* |
876 | * Check for overflow; dev_loss_tmo is u32 | |
877 | */ | |
878 | if (val > UINT_MAX) | |
879 | return -EINVAL; | |
880 | ||
f2818663 HR |
881 | /* |
882 | * If fast_io_fail is off we have to cap | |
883 | * dev_loss_tmo at SCSI_DEVICE_BLOCK_MAX_TIMEOUT | |
884 | */ | |
885 | if (rport->fast_io_fail_tmo == -1 && | |
886 | val > SCSI_DEVICE_BLOCK_MAX_TIMEOUT) | |
887 | return -EINVAL; | |
888 | ||
19a7b4ae | 889 | i->f->set_rport_dev_loss_tmo(rport, val); |
43ca910a MC |
890 | return 0; |
891 | } | |
892 | ||
893 | fc_rport_show_function(dev_loss_tmo, "%d\n", 20, ) | |
894 | static ssize_t | |
895 | store_fc_rport_dev_loss_tmo(struct device *dev, struct device_attribute *attr, | |
896 | const char *buf, size_t count) | |
897 | { | |
898 | struct fc_rport *rport = transport_class_to_rport(dev); | |
899 | unsigned long val; | |
900 | int rc; | |
901 | ||
902 | rc = fc_str_to_dev_loss(buf, &val); | |
903 | if (rc) | |
904 | return rc; | |
905 | ||
906 | rc = fc_rport_set_dev_loss_tmo(rport, val); | |
907 | if (rc) | |
908 | return rc; | |
19a7b4ae JSEC |
909 | return count; |
910 | } | |
ee959b00 | 911 | static FC_DEVICE_ATTR(rport, dev_loss_tmo, S_IRUGO | S_IWUSR, |
19a7b4ae | 912 | show_fc_rport_dev_loss_tmo, store_fc_rport_dev_loss_tmo); |
1da177e4 LT |
913 | |
914 | ||
915 | /* Private Remote Port Attributes */ | |
916 | ||
917 | fc_private_rport_rd_attr_cast(node_name, "0x%llx\n", 20, unsigned long long); | |
918 | fc_private_rport_rd_attr_cast(port_name, "0x%llx\n", 20, unsigned long long); | |
919 | fc_private_rport_rd_attr(port_id, "0x%06x\n", 20); | |
920 | ||
921 | static ssize_t | |
ee959b00 TJ |
922 | show_fc_rport_roles (struct device *dev, struct device_attribute *attr, |
923 | char *buf) | |
1da177e4 | 924 | { |
ee959b00 | 925 | struct fc_rport *rport = transport_class_to_rport(dev); |
1da177e4 LT |
926 | |
927 | /* identify any roles that are port_id specific */ | |
928 | if ((rport->port_id != -1) && | |
929 | (rport->port_id & FC_WELLKNOWN_PORTID_MASK) == | |
930 | FC_WELLKNOWN_PORTID_MASK) { | |
931 | switch (rport->port_id & FC_WELLKNOWN_ROLE_MASK) { | |
932 | case FC_FPORT_PORTID: | |
933 | return snprintf(buf, 30, "Fabric Port\n"); | |
934 | case FC_FABCTLR_PORTID: | |
935 | return snprintf(buf, 30, "Fabric Controller\n"); | |
936 | case FC_DIRSRVR_PORTID: | |
937 | return snprintf(buf, 30, "Directory Server\n"); | |
938 | case FC_TIMESRVR_PORTID: | |
939 | return snprintf(buf, 30, "Time Server\n"); | |
940 | case FC_MGMTSRVR_PORTID: | |
941 | return snprintf(buf, 30, "Management Server\n"); | |
942 | default: | |
943 | return snprintf(buf, 30, "Unknown Fabric Entity\n"); | |
944 | } | |
945 | } else { | |
a53eb5e0 | 946 | if (rport->roles == FC_PORT_ROLE_UNKNOWN) |
1da177e4 | 947 | return snprintf(buf, 20, "unknown\n"); |
a53eb5e0 | 948 | return get_fc_port_roles_names(rport->roles, buf); |
1da177e4 LT |
949 | } |
950 | } | |
ee959b00 | 951 | static FC_DEVICE_ATTR(rport, roles, S_IRUGO, |
1da177e4 LT |
952 | show_fc_rport_roles, NULL); |
953 | ||
954 | fc_private_rport_rd_enum_attr(port_state, FC_PORTSTATE_MAX_NAMELEN); | |
955 | fc_private_rport_rd_attr(scsi_target_id, "%d\n", 20); | |
956 | ||
0f29b966 JS |
957 | /* |
958 | * fast_io_fail_tmo attribute | |
959 | */ | |
960 | static ssize_t | |
ee959b00 TJ |
961 | show_fc_rport_fast_io_fail_tmo (struct device *dev, |
962 | struct device_attribute *attr, char *buf) | |
0f29b966 | 963 | { |
ee959b00 | 964 | struct fc_rport *rport = transport_class_to_rport(dev); |
0f29b966 JS |
965 | |
966 | if (rport->fast_io_fail_tmo == -1) | |
967 | return snprintf(buf, 5, "off\n"); | |
968 | return snprintf(buf, 20, "%d\n", rport->fast_io_fail_tmo); | |
969 | } | |
970 | ||
971 | static ssize_t | |
ee959b00 TJ |
972 | store_fc_rport_fast_io_fail_tmo(struct device *dev, |
973 | struct device_attribute *attr, const char *buf, | |
974 | size_t count) | |
0f29b966 JS |
975 | { |
976 | int val; | |
977 | char *cp; | |
ee959b00 | 978 | struct fc_rport *rport = transport_class_to_rport(dev); |
0f29b966 JS |
979 | |
980 | if ((rport->port_state == FC_PORTSTATE_BLOCKED) || | |
981 | (rport->port_state == FC_PORTSTATE_DELETED) || | |
982 | (rport->port_state == FC_PORTSTATE_NOTPRESENT)) | |
983 | return -EBUSY; | |
984 | if (strncmp(buf, "off", 3) == 0) | |
985 | rport->fast_io_fail_tmo = -1; | |
986 | else { | |
987 | val = simple_strtoul(buf, &cp, 0); | |
f2818663 HR |
988 | if ((*cp && (*cp != '\n')) || (val < 0)) |
989 | return -EINVAL; | |
990 | /* | |
991 | * Cap fast_io_fail by dev_loss_tmo or | |
992 | * SCSI_DEVICE_BLOCK_MAX_TIMEOUT. | |
993 | */ | |
994 | if ((val >= rport->dev_loss_tmo) || | |
995 | (val > SCSI_DEVICE_BLOCK_MAX_TIMEOUT)) | |
0f29b966 | 996 | return -EINVAL; |
f2818663 | 997 | |
0f29b966 JS |
998 | rport->fast_io_fail_tmo = val; |
999 | } | |
1000 | return count; | |
1001 | } | |
ee959b00 | 1002 | static FC_DEVICE_ATTR(rport, fast_io_fail_tmo, S_IRUGO | S_IWUSR, |
0f29b966 | 1003 | show_fc_rport_fast_io_fail_tmo, store_fc_rport_fast_io_fail_tmo); |
1da177e4 LT |
1004 | |
1005 | ||
1006 | /* | |
1007 | * FC SCSI Target Attribute Management | |
1008 | */ | |
1009 | ||
1010 | /* | |
1011 | * Note: in the target show function we recognize when the remote | |
732bee7a | 1012 | * port is in the hierarchy and do not allow the driver to get |
1da177e4 LT |
1013 | * involved in sysfs functions. The driver only gets involved if |
1014 | * it's the "old" style that doesn't use rports. | |
1015 | */ | |
1016 | #define fc_starget_show_function(field, format_string, sz, cast) \ | |
1017 | static ssize_t \ | |
ee959b00 TJ |
1018 | show_fc_starget_##field (struct device *dev, \ |
1019 | struct device_attribute *attr, char *buf) \ | |
1da177e4 | 1020 | { \ |
ee959b00 | 1021 | struct scsi_target *starget = transport_class_to_starget(dev); \ |
1da177e4 LT |
1022 | struct Scsi_Host *shost = dev_to_shost(starget->dev.parent); \ |
1023 | struct fc_internal *i = to_fc_internal(shost->transportt); \ | |
1024 | struct fc_rport *rport = starget_to_rport(starget); \ | |
1025 | if (rport) \ | |
1026 | fc_starget_##field(starget) = rport->field; \ | |
1027 | else if (i->f->get_starget_##field) \ | |
1028 | i->f->get_starget_##field(starget); \ | |
1029 | return snprintf(buf, sz, format_string, \ | |
1030 | cast fc_starget_##field(starget)); \ | |
1031 | } | |
1032 | ||
1033 | #define fc_starget_rd_attr(field, format_string, sz) \ | |
1034 | fc_starget_show_function(field, format_string, sz, ) \ | |
ee959b00 | 1035 | static FC_DEVICE_ATTR(starget, field, S_IRUGO, \ |
1da177e4 LT |
1036 | show_fc_starget_##field, NULL) |
1037 | ||
1038 | #define fc_starget_rd_attr_cast(field, format_string, sz, cast) \ | |
1039 | fc_starget_show_function(field, format_string, sz, (cast)) \ | |
ee959b00 | 1040 | static FC_DEVICE_ATTR(starget, field, S_IRUGO, \ |
1da177e4 LT |
1041 | show_fc_starget_##field, NULL) |
1042 | ||
1043 | #define SETUP_STARGET_ATTRIBUTE_RD(field) \ | |
ee959b00 | 1044 | i->private_starget_attrs[count] = device_attr_starget_##field; \ |
1da177e4 LT |
1045 | i->private_starget_attrs[count].attr.mode = S_IRUGO; \ |
1046 | i->private_starget_attrs[count].store = NULL; \ | |
1047 | i->starget_attrs[count] = &i->private_starget_attrs[count]; \ | |
1048 | if (i->f->show_starget_##field) \ | |
1049 | count++ | |
1050 | ||
1051 | #define SETUP_STARGET_ATTRIBUTE_RW(field) \ | |
ee959b00 | 1052 | i->private_starget_attrs[count] = device_attr_starget_##field; \ |
1da177e4 LT |
1053 | if (!i->f->set_starget_##field) { \ |
1054 | i->private_starget_attrs[count].attr.mode = S_IRUGO; \ | |
1055 | i->private_starget_attrs[count].store = NULL; \ | |
1056 | } \ | |
1057 | i->starget_attrs[count] = &i->private_starget_attrs[count]; \ | |
1058 | if (i->f->show_starget_##field) \ | |
1059 | count++ | |
1060 | ||
1061 | /* The FC Transport SCSI Target Attributes: */ | |
1062 | fc_starget_rd_attr_cast(node_name, "0x%llx\n", 20, unsigned long long); | |
1063 | fc_starget_rd_attr_cast(port_name, "0x%llx\n", 20, unsigned long long); | |
1064 | fc_starget_rd_attr(port_id, "0x%06x\n", 20); | |
1065 | ||
1066 | ||
a53eb5e0 JS |
1067 | /* |
1068 | * FC Virtual Port Attribute Management | |
1069 | */ | |
1070 | ||
1071 | #define fc_vport_show_function(field, format_string, sz, cast) \ | |
1072 | static ssize_t \ | |
ee959b00 TJ |
1073 | show_fc_vport_##field (struct device *dev, \ |
1074 | struct device_attribute *attr, char *buf) \ | |
a53eb5e0 | 1075 | { \ |
ee959b00 | 1076 | struct fc_vport *vport = transport_class_to_vport(dev); \ |
a53eb5e0 JS |
1077 | struct Scsi_Host *shost = vport_to_shost(vport); \ |
1078 | struct fc_internal *i = to_fc_internal(shost->transportt); \ | |
1079 | if ((i->f->get_vport_##field) && \ | |
1080 | !(vport->flags & (FC_VPORT_DEL | FC_VPORT_CREATING))) \ | |
1081 | i->f->get_vport_##field(vport); \ | |
1082 | return snprintf(buf, sz, format_string, cast vport->field); \ | |
1083 | } | |
1084 | ||
1085 | #define fc_vport_store_function(field) \ | |
1086 | static ssize_t \ | |
ee959b00 TJ |
1087 | store_fc_vport_##field(struct device *dev, \ |
1088 | struct device_attribute *attr, \ | |
1089 | const char *buf, size_t count) \ | |
a53eb5e0 JS |
1090 | { \ |
1091 | int val; \ | |
ee959b00 | 1092 | struct fc_vport *vport = transport_class_to_vport(dev); \ |
a53eb5e0 JS |
1093 | struct Scsi_Host *shost = vport_to_shost(vport); \ |
1094 | struct fc_internal *i = to_fc_internal(shost->transportt); \ | |
1095 | char *cp; \ | |
1096 | if (vport->flags & (FC_VPORT_DEL | FC_VPORT_CREATING)) \ | |
1097 | return -EBUSY; \ | |
1098 | val = simple_strtoul(buf, &cp, 0); \ | |
1099 | if (*cp && (*cp != '\n')) \ | |
1100 | return -EINVAL; \ | |
1101 | i->f->set_vport_##field(vport, val); \ | |
1102 | return count; \ | |
1103 | } | |
1104 | ||
1105 | #define fc_vport_store_str_function(field, slen) \ | |
1106 | static ssize_t \ | |
ee959b00 TJ |
1107 | store_fc_vport_##field(struct device *dev, \ |
1108 | struct device_attribute *attr, \ | |
1109 | const char *buf, size_t count) \ | |
a53eb5e0 | 1110 | { \ |
ee959b00 | 1111 | struct fc_vport *vport = transport_class_to_vport(dev); \ |
a53eb5e0 JS |
1112 | struct Scsi_Host *shost = vport_to_shost(vport); \ |
1113 | struct fc_internal *i = to_fc_internal(shost->transportt); \ | |
1114 | unsigned int cnt=count; \ | |
1115 | \ | |
1116 | /* count may include a LF at end of string */ \ | |
1117 | if (buf[cnt-1] == '\n') \ | |
1118 | cnt--; \ | |
1119 | if (cnt > ((slen) - 1)) \ | |
1120 | return -EINVAL; \ | |
1121 | memcpy(vport->field, buf, cnt); \ | |
1122 | i->f->set_vport_##field(vport); \ | |
1123 | return count; \ | |
1124 | } | |
1125 | ||
1126 | #define fc_vport_rd_attr(field, format_string, sz) \ | |
1127 | fc_vport_show_function(field, format_string, sz, ) \ | |
ee959b00 | 1128 | static FC_DEVICE_ATTR(vport, field, S_IRUGO, \ |
a53eb5e0 JS |
1129 | show_fc_vport_##field, NULL) |
1130 | ||
1131 | #define fc_vport_rd_attr_cast(field, format_string, sz, cast) \ | |
1132 | fc_vport_show_function(field, format_string, sz, (cast)) \ | |
ee959b00 | 1133 | static FC_DEVICE_ATTR(vport, field, S_IRUGO, \ |
a53eb5e0 JS |
1134 | show_fc_vport_##field, NULL) |
1135 | ||
1136 | #define fc_vport_rw_attr(field, format_string, sz) \ | |
1137 | fc_vport_show_function(field, format_string, sz, ) \ | |
1138 | fc_vport_store_function(field) \ | |
ee959b00 | 1139 | static FC_DEVICE_ATTR(vport, field, S_IRUGO | S_IWUSR, \ |
a53eb5e0 JS |
1140 | show_fc_vport_##field, \ |
1141 | store_fc_vport_##field) | |
1142 | ||
1143 | #define fc_private_vport_show_function(field, format_string, sz, cast) \ | |
1144 | static ssize_t \ | |
ee959b00 TJ |
1145 | show_fc_vport_##field (struct device *dev, \ |
1146 | struct device_attribute *attr, char *buf) \ | |
a53eb5e0 | 1147 | { \ |
ee959b00 | 1148 | struct fc_vport *vport = transport_class_to_vport(dev); \ |
a53eb5e0 JS |
1149 | return snprintf(buf, sz, format_string, cast vport->field); \ |
1150 | } | |
1151 | ||
1152 | #define fc_private_vport_store_u32_function(field) \ | |
1153 | static ssize_t \ | |
ee959b00 TJ |
1154 | store_fc_vport_##field(struct device *dev, \ |
1155 | struct device_attribute *attr, \ | |
1156 | const char *buf, size_t count) \ | |
a53eb5e0 JS |
1157 | { \ |
1158 | u32 val; \ | |
ee959b00 | 1159 | struct fc_vport *vport = transport_class_to_vport(dev); \ |
a53eb5e0 JS |
1160 | char *cp; \ |
1161 | if (vport->flags & (FC_VPORT_DEL | FC_VPORT_CREATING)) \ | |
1162 | return -EBUSY; \ | |
1163 | val = simple_strtoul(buf, &cp, 0); \ | |
1164 | if (*cp && (*cp != '\n')) \ | |
1165 | return -EINVAL; \ | |
1166 | vport->field = val; \ | |
1167 | return count; \ | |
1168 | } | |
1169 | ||
1170 | ||
1171 | #define fc_private_vport_rd_attr(field, format_string, sz) \ | |
1172 | fc_private_vport_show_function(field, format_string, sz, ) \ | |
ee959b00 | 1173 | static FC_DEVICE_ATTR(vport, field, S_IRUGO, \ |
a53eb5e0 JS |
1174 | show_fc_vport_##field, NULL) |
1175 | ||
1176 | #define fc_private_vport_rd_attr_cast(field, format_string, sz, cast) \ | |
1177 | fc_private_vport_show_function(field, format_string, sz, (cast)) \ | |
ee959b00 | 1178 | static FC_DEVICE_ATTR(vport, field, S_IRUGO, \ |
a53eb5e0 JS |
1179 | show_fc_vport_##field, NULL) |
1180 | ||
1181 | #define fc_private_vport_rw_u32_attr(field, format_string, sz) \ | |
1182 | fc_private_vport_show_function(field, format_string, sz, ) \ | |
1183 | fc_private_vport_store_u32_function(field) \ | |
ee959b00 | 1184 | static FC_DEVICE_ATTR(vport, field, S_IRUGO | S_IWUSR, \ |
a53eb5e0 JS |
1185 | show_fc_vport_##field, \ |
1186 | store_fc_vport_##field) | |
1187 | ||
1188 | ||
1189 | #define fc_private_vport_rd_enum_attr(title, maxlen) \ | |
1190 | static ssize_t \ | |
ee959b00 TJ |
1191 | show_fc_vport_##title (struct device *dev, \ |
1192 | struct device_attribute *attr, \ | |
1193 | char *buf) \ | |
a53eb5e0 | 1194 | { \ |
ee959b00 | 1195 | struct fc_vport *vport = transport_class_to_vport(dev); \ |
a53eb5e0 JS |
1196 | const char *name; \ |
1197 | name = get_fc_##title##_name(vport->title); \ | |
1198 | if (!name) \ | |
1199 | return -EINVAL; \ | |
1200 | return snprintf(buf, maxlen, "%s\n", name); \ | |
1201 | } \ | |
ee959b00 | 1202 | static FC_DEVICE_ATTR(vport, title, S_IRUGO, \ |
a53eb5e0 JS |
1203 | show_fc_vport_##title, NULL) |
1204 | ||
1205 | ||
1206 | #define SETUP_VPORT_ATTRIBUTE_RD(field) \ | |
ee959b00 | 1207 | i->private_vport_attrs[count] = device_attr_vport_##field; \ |
a53eb5e0 JS |
1208 | i->private_vport_attrs[count].attr.mode = S_IRUGO; \ |
1209 | i->private_vport_attrs[count].store = NULL; \ | |
1210 | i->vport_attrs[count] = &i->private_vport_attrs[count]; \ | |
1211 | if (i->f->get_##field) \ | |
1212 | count++ | |
1213 | /* NOTE: Above MACRO differs: checks function not show bit */ | |
1214 | ||
1215 | #define SETUP_PRIVATE_VPORT_ATTRIBUTE_RD(field) \ | |
ee959b00 | 1216 | i->private_vport_attrs[count] = device_attr_vport_##field; \ |
a53eb5e0 JS |
1217 | i->private_vport_attrs[count].attr.mode = S_IRUGO; \ |
1218 | i->private_vport_attrs[count].store = NULL; \ | |
1219 | i->vport_attrs[count] = &i->private_vport_attrs[count]; \ | |
1220 | count++ | |
1221 | ||
1222 | #define SETUP_VPORT_ATTRIBUTE_WR(field) \ | |
ee959b00 | 1223 | i->private_vport_attrs[count] = device_attr_vport_##field; \ |
a53eb5e0 JS |
1224 | i->vport_attrs[count] = &i->private_vport_attrs[count]; \ |
1225 | if (i->f->field) \ | |
1226 | count++ | |
1227 | /* NOTE: Above MACRO differs: checks function */ | |
1228 | ||
1229 | #define SETUP_VPORT_ATTRIBUTE_RW(field) \ | |
ee959b00 | 1230 | i->private_vport_attrs[count] = device_attr_vport_##field; \ |
a53eb5e0 JS |
1231 | if (!i->f->set_vport_##field) { \ |
1232 | i->private_vport_attrs[count].attr.mode = S_IRUGO; \ | |
1233 | i->private_vport_attrs[count].store = NULL; \ | |
1234 | } \ | |
1235 | i->vport_attrs[count] = &i->private_vport_attrs[count]; \ | |
1236 | count++ | |
1237 | /* NOTE: Above MACRO differs: does not check show bit */ | |
1238 | ||
1239 | #define SETUP_PRIVATE_VPORT_ATTRIBUTE_RW(field) \ | |
1240 | { \ | |
ee959b00 | 1241 | i->private_vport_attrs[count] = device_attr_vport_##field; \ |
a53eb5e0 JS |
1242 | i->vport_attrs[count] = &i->private_vport_attrs[count]; \ |
1243 | count++; \ | |
1244 | } | |
1245 | ||
1246 | ||
1247 | /* The FC Transport Virtual Port Attributes: */ | |
1248 | ||
1249 | /* Fixed Virtual Port Attributes */ | |
1250 | ||
1251 | /* Dynamic Virtual Port Attributes */ | |
1252 | ||
1253 | /* Private Virtual Port Attributes */ | |
1254 | ||
1255 | fc_private_vport_rd_enum_attr(vport_state, FC_VPORTSTATE_MAX_NAMELEN); | |
1256 | fc_private_vport_rd_enum_attr(vport_last_state, FC_VPORTSTATE_MAX_NAMELEN); | |
1257 | fc_private_vport_rd_attr_cast(node_name, "0x%llx\n", 20, unsigned long long); | |
1258 | fc_private_vport_rd_attr_cast(port_name, "0x%llx\n", 20, unsigned long long); | |
1259 | ||
1260 | static ssize_t | |
ee959b00 TJ |
1261 | show_fc_vport_roles (struct device *dev, struct device_attribute *attr, |
1262 | char *buf) | |
a53eb5e0 | 1263 | { |
ee959b00 | 1264 | struct fc_vport *vport = transport_class_to_vport(dev); |
a53eb5e0 JS |
1265 | |
1266 | if (vport->roles == FC_PORT_ROLE_UNKNOWN) | |
1267 | return snprintf(buf, 20, "unknown\n"); | |
1268 | return get_fc_port_roles_names(vport->roles, buf); | |
1269 | } | |
ee959b00 | 1270 | static FC_DEVICE_ATTR(vport, roles, S_IRUGO, show_fc_vport_roles, NULL); |
a53eb5e0 JS |
1271 | |
1272 | fc_private_vport_rd_enum_attr(vport_type, FC_PORTTYPE_MAX_NAMELEN); | |
1273 | ||
1274 | fc_private_vport_show_function(symbolic_name, "%s\n", | |
1275 | FC_VPORT_SYMBOLIC_NAMELEN + 1, ) | |
1276 | fc_vport_store_str_function(symbolic_name, FC_VPORT_SYMBOLIC_NAMELEN) | |
ee959b00 | 1277 | static FC_DEVICE_ATTR(vport, symbolic_name, S_IRUGO | S_IWUSR, |
a53eb5e0 JS |
1278 | show_fc_vport_symbolic_name, store_fc_vport_symbolic_name); |
1279 | ||
1280 | static ssize_t | |
ee959b00 TJ |
1281 | store_fc_vport_delete(struct device *dev, struct device_attribute *attr, |
1282 | const char *buf, size_t count) | |
a53eb5e0 | 1283 | { |
ee959b00 | 1284 | struct fc_vport *vport = transport_class_to_vport(dev); |
9ef3e4a4 | 1285 | struct Scsi_Host *shost = vport_to_shost(vport); |
0d9dc7c8 GR |
1286 | unsigned long flags; |
1287 | ||
1288 | spin_lock_irqsave(shost->host_lock, flags); | |
1289 | if (vport->flags & (FC_VPORT_DEL | FC_VPORT_CREATING)) { | |
1290 | spin_unlock_irqrestore(shost->host_lock, flags); | |
1291 | return -EBUSY; | |
1292 | } | |
1293 | vport->flags |= FC_VPORT_DELETING; | |
1294 | spin_unlock_irqrestore(shost->host_lock, flags); | |
a53eb5e0 | 1295 | |
9ef3e4a4 | 1296 | fc_queue_work(shost, &vport->vport_delete_work); |
a53eb5e0 JS |
1297 | return count; |
1298 | } | |
ee959b00 | 1299 | static FC_DEVICE_ATTR(vport, vport_delete, S_IWUSR, |
a53eb5e0 JS |
1300 | NULL, store_fc_vport_delete); |
1301 | ||
1302 | ||
1303 | /* | |
1304 | * Enable/Disable vport | |
1305 | * Write "1" to disable, write "0" to enable | |
1306 | */ | |
1307 | static ssize_t | |
ee959b00 TJ |
1308 | store_fc_vport_disable(struct device *dev, struct device_attribute *attr, |
1309 | const char *buf, | |
a53eb5e0 JS |
1310 | size_t count) |
1311 | { | |
ee959b00 | 1312 | struct fc_vport *vport = transport_class_to_vport(dev); |
a53eb5e0 JS |
1313 | struct Scsi_Host *shost = vport_to_shost(vport); |
1314 | struct fc_internal *i = to_fc_internal(shost->transportt); | |
1315 | int stat; | |
1316 | ||
1317 | if (vport->flags & (FC_VPORT_DEL | FC_VPORT_CREATING)) | |
1318 | return -EBUSY; | |
1319 | ||
1320 | if (*buf == '0') { | |
1321 | if (vport->vport_state != FC_VPORT_DISABLED) | |
1322 | return -EALREADY; | |
1323 | } else if (*buf == '1') { | |
1324 | if (vport->vport_state == FC_VPORT_DISABLED) | |
1325 | return -EALREADY; | |
1326 | } else | |
1327 | return -EINVAL; | |
1328 | ||
1329 | stat = i->f->vport_disable(vport, ((*buf == '0') ? false : true)); | |
1330 | return stat ? stat : count; | |
1331 | } | |
ee959b00 | 1332 | static FC_DEVICE_ATTR(vport, vport_disable, S_IWUSR, |
a53eb5e0 JS |
1333 | NULL, store_fc_vport_disable); |
1334 | ||
1335 | ||
1da177e4 LT |
1336 | /* |
1337 | * Host Attribute Management | |
1338 | */ | |
1339 | ||
1340 | #define fc_host_show_function(field, format_string, sz, cast) \ | |
1341 | static ssize_t \ | |
ee959b00 TJ |
1342 | show_fc_host_##field (struct device *dev, \ |
1343 | struct device_attribute *attr, char *buf) \ | |
1da177e4 | 1344 | { \ |
ee959b00 | 1345 | struct Scsi_Host *shost = transport_class_to_shost(dev); \ |
1da177e4 LT |
1346 | struct fc_internal *i = to_fc_internal(shost->transportt); \ |
1347 | if (i->f->get_host_##field) \ | |
1348 | i->f->get_host_##field(shost); \ | |
1349 | return snprintf(buf, sz, format_string, cast fc_host_##field(shost)); \ | |
1350 | } | |
1351 | ||
1352 | #define fc_host_store_function(field) \ | |
1353 | static ssize_t \ | |
ee959b00 TJ |
1354 | store_fc_host_##field(struct device *dev, \ |
1355 | struct device_attribute *attr, \ | |
1356 | const char *buf, size_t count) \ | |
1da177e4 LT |
1357 | { \ |
1358 | int val; \ | |
ee959b00 | 1359 | struct Scsi_Host *shost = transport_class_to_shost(dev); \ |
1da177e4 | 1360 | struct fc_internal *i = to_fc_internal(shost->transportt); \ |
0f29b966 | 1361 | char *cp; \ |
1da177e4 | 1362 | \ |
0f29b966 JS |
1363 | val = simple_strtoul(buf, &cp, 0); \ |
1364 | if (*cp && (*cp != '\n')) \ | |
1365 | return -EINVAL; \ | |
1da177e4 LT |
1366 | i->f->set_host_##field(shost, val); \ |
1367 | return count; \ | |
1368 | } | |
1369 | ||
b8d08210 JS |
1370 | #define fc_host_store_str_function(field, slen) \ |
1371 | static ssize_t \ | |
ee959b00 TJ |
1372 | store_fc_host_##field(struct device *dev, \ |
1373 | struct device_attribute *attr, \ | |
1374 | const char *buf, size_t count) \ | |
b8d08210 | 1375 | { \ |
ee959b00 | 1376 | struct Scsi_Host *shost = transport_class_to_shost(dev); \ |
b8d08210 JS |
1377 | struct fc_internal *i = to_fc_internal(shost->transportt); \ |
1378 | unsigned int cnt=count; \ | |
1379 | \ | |
1380 | /* count may include a LF at end of string */ \ | |
1381 | if (buf[cnt-1] == '\n') \ | |
1382 | cnt--; \ | |
1383 | if (cnt > ((slen) - 1)) \ | |
1384 | return -EINVAL; \ | |
1385 | memcpy(fc_host_##field(shost), buf, cnt); \ | |
1386 | i->f->set_host_##field(shost); \ | |
1387 | return count; \ | |
1388 | } | |
1389 | ||
1da177e4 LT |
1390 | #define fc_host_rd_attr(field, format_string, sz) \ |
1391 | fc_host_show_function(field, format_string, sz, ) \ | |
ee959b00 | 1392 | static FC_DEVICE_ATTR(host, field, S_IRUGO, \ |
1da177e4 LT |
1393 | show_fc_host_##field, NULL) |
1394 | ||
1395 | #define fc_host_rd_attr_cast(field, format_string, sz, cast) \ | |
1396 | fc_host_show_function(field, format_string, sz, (cast)) \ | |
ee959b00 | 1397 | static FC_DEVICE_ATTR(host, field, S_IRUGO, \ |
1da177e4 LT |
1398 | show_fc_host_##field, NULL) |
1399 | ||
1400 | #define fc_host_rw_attr(field, format_string, sz) \ | |
1401 | fc_host_show_function(field, format_string, sz, ) \ | |
1402 | fc_host_store_function(field) \ | |
ee959b00 | 1403 | static FC_DEVICE_ATTR(host, field, S_IRUGO | S_IWUSR, \ |
1da177e4 LT |
1404 | show_fc_host_##field, \ |
1405 | store_fc_host_##field) | |
1406 | ||
1407 | #define fc_host_rd_enum_attr(title, maxlen) \ | |
1408 | static ssize_t \ | |
ee959b00 TJ |
1409 | show_fc_host_##title (struct device *dev, \ |
1410 | struct device_attribute *attr, char *buf) \ | |
1da177e4 | 1411 | { \ |
ee959b00 | 1412 | struct Scsi_Host *shost = transport_class_to_shost(dev); \ |
1da177e4 LT |
1413 | struct fc_internal *i = to_fc_internal(shost->transportt); \ |
1414 | const char *name; \ | |
1415 | if (i->f->get_host_##title) \ | |
1416 | i->f->get_host_##title(shost); \ | |
1417 | name = get_fc_##title##_name(fc_host_##title(shost)); \ | |
1418 | if (!name) \ | |
1419 | return -EINVAL; \ | |
1420 | return snprintf(buf, maxlen, "%s\n", name); \ | |
1421 | } \ | |
ee959b00 | 1422 | static FC_DEVICE_ATTR(host, title, S_IRUGO, show_fc_host_##title, NULL) |
1da177e4 LT |
1423 | |
1424 | #define SETUP_HOST_ATTRIBUTE_RD(field) \ | |
ee959b00 | 1425 | i->private_host_attrs[count] = device_attr_host_##field; \ |
1da177e4 LT |
1426 | i->private_host_attrs[count].attr.mode = S_IRUGO; \ |
1427 | i->private_host_attrs[count].store = NULL; \ | |
1428 | i->host_attrs[count] = &i->private_host_attrs[count]; \ | |
1429 | if (i->f->show_host_##field) \ | |
1430 | count++ | |
1431 | ||
a53eb5e0 | 1432 | #define SETUP_HOST_ATTRIBUTE_RD_NS(field) \ |
ee959b00 | 1433 | i->private_host_attrs[count] = device_attr_host_##field; \ |
a53eb5e0 JS |
1434 | i->private_host_attrs[count].attr.mode = S_IRUGO; \ |
1435 | i->private_host_attrs[count].store = NULL; \ | |
1436 | i->host_attrs[count] = &i->private_host_attrs[count]; \ | |
1437 | count++ | |
1438 | ||
1da177e4 | 1439 | #define SETUP_HOST_ATTRIBUTE_RW(field) \ |
ee959b00 | 1440 | i->private_host_attrs[count] = device_attr_host_##field; \ |
1da177e4 LT |
1441 | if (!i->f->set_host_##field) { \ |
1442 | i->private_host_attrs[count].attr.mode = S_IRUGO; \ | |
1443 | i->private_host_attrs[count].store = NULL; \ | |
1444 | } \ | |
1445 | i->host_attrs[count] = &i->private_host_attrs[count]; \ | |
1446 | if (i->f->show_host_##field) \ | |
1447 | count++ | |
1448 | ||
1449 | ||
1450 | #define fc_private_host_show_function(field, format_string, sz, cast) \ | |
1451 | static ssize_t \ | |
ee959b00 TJ |
1452 | show_fc_host_##field (struct device *dev, \ |
1453 | struct device_attribute *attr, char *buf) \ | |
1da177e4 | 1454 | { \ |
ee959b00 | 1455 | struct Scsi_Host *shost = transport_class_to_shost(dev); \ |
1da177e4 LT |
1456 | return snprintf(buf, sz, format_string, cast fc_host_##field(shost)); \ |
1457 | } | |
1458 | ||
1459 | #define fc_private_host_rd_attr(field, format_string, sz) \ | |
1460 | fc_private_host_show_function(field, format_string, sz, ) \ | |
ee959b00 | 1461 | static FC_DEVICE_ATTR(host, field, S_IRUGO, \ |
1da177e4 LT |
1462 | show_fc_host_##field, NULL) |
1463 | ||
1464 | #define fc_private_host_rd_attr_cast(field, format_string, sz, cast) \ | |
1465 | fc_private_host_show_function(field, format_string, sz, (cast)) \ | |
ee959b00 | 1466 | static FC_DEVICE_ATTR(host, field, S_IRUGO, \ |
1da177e4 LT |
1467 | show_fc_host_##field, NULL) |
1468 | ||
1469 | #define SETUP_PRIVATE_HOST_ATTRIBUTE_RD(field) \ | |
ee959b00 | 1470 | i->private_host_attrs[count] = device_attr_host_##field; \ |
1da177e4 LT |
1471 | i->private_host_attrs[count].attr.mode = S_IRUGO; \ |
1472 | i->private_host_attrs[count].store = NULL; \ | |
1473 | i->host_attrs[count] = &i->private_host_attrs[count]; \ | |
1474 | count++ | |
1475 | ||
1476 | #define SETUP_PRIVATE_HOST_ATTRIBUTE_RW(field) \ | |
91ca7b01 | 1477 | { \ |
ee959b00 | 1478 | i->private_host_attrs[count] = device_attr_host_##field; \ |
1da177e4 | 1479 | i->host_attrs[count] = &i->private_host_attrs[count]; \ |
91ca7b01 AV |
1480 | count++; \ |
1481 | } | |
1da177e4 LT |
1482 | |
1483 | ||
1484 | /* Fixed Host Attributes */ | |
1485 | ||
1486 | static ssize_t | |
ee959b00 TJ |
1487 | show_fc_host_supported_classes (struct device *dev, |
1488 | struct device_attribute *attr, char *buf) | |
1da177e4 | 1489 | { |
ee959b00 | 1490 | struct Scsi_Host *shost = transport_class_to_shost(dev); |
1da177e4 LT |
1491 | |
1492 | if (fc_host_supported_classes(shost) == FC_COS_UNSPECIFIED) | |
1493 | return snprintf(buf, 20, "unspecified\n"); | |
1494 | ||
1495 | return get_fc_cos_names(fc_host_supported_classes(shost), buf); | |
1496 | } | |
ee959b00 | 1497 | static FC_DEVICE_ATTR(host, supported_classes, S_IRUGO, |
1da177e4 LT |
1498 | show_fc_host_supported_classes, NULL); |
1499 | ||
1500 | static ssize_t | |
ee959b00 TJ |
1501 | show_fc_host_supported_fc4s (struct device *dev, |
1502 | struct device_attribute *attr, char *buf) | |
1da177e4 | 1503 | { |
ee959b00 | 1504 | struct Scsi_Host *shost = transport_class_to_shost(dev); |
1da177e4 LT |
1505 | return (ssize_t)show_fc_fc4s(buf, fc_host_supported_fc4s(shost)); |
1506 | } | |
ee959b00 | 1507 | static FC_DEVICE_ATTR(host, supported_fc4s, S_IRUGO, |
1da177e4 LT |
1508 | show_fc_host_supported_fc4s, NULL); |
1509 | ||
1510 | static ssize_t | |
ee959b00 TJ |
1511 | show_fc_host_supported_speeds (struct device *dev, |
1512 | struct device_attribute *attr, char *buf) | |
1da177e4 | 1513 | { |
ee959b00 | 1514 | struct Scsi_Host *shost = transport_class_to_shost(dev); |
1da177e4 LT |
1515 | |
1516 | if (fc_host_supported_speeds(shost) == FC_PORTSPEED_UNKNOWN) | |
1517 | return snprintf(buf, 20, "unknown\n"); | |
1518 | ||
1519 | return get_fc_port_speed_names(fc_host_supported_speeds(shost), buf); | |
1520 | } | |
ee959b00 | 1521 | static FC_DEVICE_ATTR(host, supported_speeds, S_IRUGO, |
1da177e4 LT |
1522 | show_fc_host_supported_speeds, NULL); |
1523 | ||
1524 | ||
1525 | fc_private_host_rd_attr_cast(node_name, "0x%llx\n", 20, unsigned long long); | |
1526 | fc_private_host_rd_attr_cast(port_name, "0x%llx\n", 20, unsigned long long); | |
6b7281d0 AH |
1527 | fc_private_host_rd_attr_cast(permanent_port_name, "0x%llx\n", 20, |
1528 | unsigned long long); | |
1da177e4 | 1529 | fc_private_host_rd_attr(maxframe_size, "%u bytes\n", 20); |
a53eb5e0 | 1530 | fc_private_host_rd_attr(max_npiv_vports, "%u\n", 20); |
1da177e4 | 1531 | fc_private_host_rd_attr(serial_number, "%s\n", (FC_SERIAL_NUMBER_SIZE +1)); |
bb8ef587 NP |
1532 | fc_private_host_rd_attr(manufacturer, "%s\n", FC_SERIAL_NUMBER_SIZE + 1); |
1533 | fc_private_host_rd_attr(model, "%s\n", FC_SYMBOLIC_NAME_SIZE + 1); | |
1534 | fc_private_host_rd_attr(model_description, "%s\n", FC_SYMBOLIC_NAME_SIZE + 1); | |
1535 | fc_private_host_rd_attr(hardware_version, "%s\n", FC_VERSION_STRING_SIZE + 1); | |
1536 | fc_private_host_rd_attr(driver_version, "%s\n", FC_VERSION_STRING_SIZE + 1); | |
1537 | fc_private_host_rd_attr(firmware_version, "%s\n", FC_VERSION_STRING_SIZE + 1); | |
1538 | fc_private_host_rd_attr(optionrom_version, "%s\n", FC_VERSION_STRING_SIZE + 1); | |
1da177e4 LT |
1539 | |
1540 | ||
1541 | /* Dynamic Host Attributes */ | |
1542 | ||
1543 | static ssize_t | |
ee959b00 TJ |
1544 | show_fc_host_active_fc4s (struct device *dev, |
1545 | struct device_attribute *attr, char *buf) | |
1da177e4 | 1546 | { |
ee959b00 | 1547 | struct Scsi_Host *shost = transport_class_to_shost(dev); |
1da177e4 LT |
1548 | struct fc_internal *i = to_fc_internal(shost->transportt); |
1549 | ||
1550 | if (i->f->get_host_active_fc4s) | |
1551 | i->f->get_host_active_fc4s(shost); | |
1552 | ||
1553 | return (ssize_t)show_fc_fc4s(buf, fc_host_active_fc4s(shost)); | |
1554 | } | |
ee959b00 | 1555 | static FC_DEVICE_ATTR(host, active_fc4s, S_IRUGO, |
1da177e4 LT |
1556 | show_fc_host_active_fc4s, NULL); |
1557 | ||
1558 | static ssize_t | |
ee959b00 TJ |
1559 | show_fc_host_speed (struct device *dev, |
1560 | struct device_attribute *attr, char *buf) | |
1da177e4 | 1561 | { |
ee959b00 | 1562 | struct Scsi_Host *shost = transport_class_to_shost(dev); |
1da177e4 LT |
1563 | struct fc_internal *i = to_fc_internal(shost->transportt); |
1564 | ||
1565 | if (i->f->get_host_speed) | |
1566 | i->f->get_host_speed(shost); | |
1567 | ||
1568 | if (fc_host_speed(shost) == FC_PORTSPEED_UNKNOWN) | |
1569 | return snprintf(buf, 20, "unknown\n"); | |
1570 | ||
1571 | return get_fc_port_speed_names(fc_host_speed(shost), buf); | |
1572 | } | |
ee959b00 | 1573 | static FC_DEVICE_ATTR(host, speed, S_IRUGO, |
1da177e4 LT |
1574 | show_fc_host_speed, NULL); |
1575 | ||
1576 | ||
1577 | fc_host_rd_attr(port_id, "0x%06x\n", 20); | |
1578 | fc_host_rd_enum_attr(port_type, FC_PORTTYPE_MAX_NAMELEN); | |
1579 | fc_host_rd_enum_attr(port_state, FC_PORTSTATE_MAX_NAMELEN); | |
1580 | fc_host_rd_attr_cast(fabric_name, "0x%llx\n", 20, unsigned long long); | |
016131b8 | 1581 | fc_host_rd_attr(symbolic_name, "%s\n", FC_SYMBOLIC_NAME_SIZE + 1); |
1da177e4 | 1582 | |
b8d08210 JS |
1583 | fc_private_host_show_function(system_hostname, "%s\n", |
1584 | FC_SYMBOLIC_NAME_SIZE + 1, ) | |
1585 | fc_host_store_str_function(system_hostname, FC_SYMBOLIC_NAME_SIZE) | |
ee959b00 | 1586 | static FC_DEVICE_ATTR(host, system_hostname, S_IRUGO | S_IWUSR, |
b8d08210 JS |
1587 | show_fc_host_system_hostname, store_fc_host_system_hostname); |
1588 | ||
1da177e4 LT |
1589 | |
1590 | /* Private Host Attributes */ | |
1591 | ||
1592 | static ssize_t | |
ee959b00 TJ |
1593 | show_fc_private_host_tgtid_bind_type(struct device *dev, |
1594 | struct device_attribute *attr, char *buf) | |
1da177e4 | 1595 | { |
ee959b00 | 1596 | struct Scsi_Host *shost = transport_class_to_shost(dev); |
1da177e4 LT |
1597 | const char *name; |
1598 | ||
1599 | name = get_fc_tgtid_bind_type_name(fc_host_tgtid_bind_type(shost)); | |
1600 | if (!name) | |
1601 | return -EINVAL; | |
1602 | return snprintf(buf, FC_BINDTYPE_MAX_NAMELEN, "%s\n", name); | |
1603 | } | |
1604 | ||
d16794f6 JSEC |
1605 | #define get_list_head_entry(pos, head, member) \ |
1606 | pos = list_entry((head)->next, typeof(*pos), member) | |
1607 | ||
1da177e4 | 1608 | static ssize_t |
ee959b00 TJ |
1609 | store_fc_private_host_tgtid_bind_type(struct device *dev, |
1610 | struct device_attribute *attr, const char *buf, size_t count) | |
1da177e4 | 1611 | { |
ee959b00 | 1612 | struct Scsi_Host *shost = transport_class_to_shost(dev); |
d16794f6 | 1613 | struct fc_rport *rport; |
1da177e4 LT |
1614 | enum fc_tgtid_binding_type val; |
1615 | unsigned long flags; | |
1616 | ||
1617 | if (get_fc_tgtid_bind_type_match(buf, &val)) | |
1618 | return -EINVAL; | |
1619 | ||
1620 | /* if changing bind type, purge all unused consistent bindings */ | |
1621 | if (val != fc_host_tgtid_bind_type(shost)) { | |
1622 | spin_lock_irqsave(shost->host_lock, flags); | |
d16794f6 JSEC |
1623 | while (!list_empty(&fc_host_rport_bindings(shost))) { |
1624 | get_list_head_entry(rport, | |
1625 | &fc_host_rport_bindings(shost), peers); | |
aedf3497 JS |
1626 | list_del(&rport->peers); |
1627 | rport->port_state = FC_PORTSTATE_DELETED; | |
1628 | fc_queue_work(shost, &rport->rport_delete_work); | |
d16794f6 | 1629 | } |
1da177e4 LT |
1630 | spin_unlock_irqrestore(shost->host_lock, flags); |
1631 | } | |
1632 | ||
1633 | fc_host_tgtid_bind_type(shost) = val; | |
1634 | return count; | |
1635 | } | |
1636 | ||
ee959b00 | 1637 | static FC_DEVICE_ATTR(host, tgtid_bind_type, S_IRUGO | S_IWUSR, |
1da177e4 LT |
1638 | show_fc_private_host_tgtid_bind_type, |
1639 | store_fc_private_host_tgtid_bind_type); | |
1640 | ||
91ca7b01 | 1641 | static ssize_t |
ee959b00 TJ |
1642 | store_fc_private_host_issue_lip(struct device *dev, |
1643 | struct device_attribute *attr, const char *buf, size_t count) | |
91ca7b01 | 1644 | { |
ee959b00 | 1645 | struct Scsi_Host *shost = transport_class_to_shost(dev); |
91ca7b01 AV |
1646 | struct fc_internal *i = to_fc_internal(shost->transportt); |
1647 | int ret; | |
1648 | ||
1649 | /* ignore any data value written to the attribute */ | |
1650 | if (i->f->issue_fc_host_lip) { | |
1651 | ret = i->f->issue_fc_host_lip(shost); | |
1652 | return ret ? ret: count; | |
1653 | } | |
1654 | ||
1655 | return -ENOENT; | |
1656 | } | |
1657 | ||
ee959b00 | 1658 | static FC_DEVICE_ATTR(host, issue_lip, S_IWUSR, NULL, |
91ca7b01 AV |
1659 | store_fc_private_host_issue_lip); |
1660 | ||
43ca910a MC |
1661 | static ssize_t |
1662 | store_fc_private_host_dev_loss_tmo(struct device *dev, | |
1663 | struct device_attribute *attr, | |
1664 | const char *buf, size_t count) | |
1665 | { | |
1666 | struct Scsi_Host *shost = transport_class_to_shost(dev); | |
1667 | struct fc_host_attrs *fc_host = shost_to_fc_host(shost); | |
1668 | struct fc_rport *rport; | |
1669 | unsigned long val, flags; | |
1670 | int rc; | |
1671 | ||
1672 | rc = fc_str_to_dev_loss(buf, &val); | |
1673 | if (rc) | |
1674 | return rc; | |
1675 | ||
1676 | fc_host_dev_loss_tmo(shost) = val; | |
1677 | spin_lock_irqsave(shost->host_lock, flags); | |
1678 | list_for_each_entry(rport, &fc_host->rports, peers) | |
1679 | fc_rport_set_dev_loss_tmo(rport, val); | |
1680 | spin_unlock_irqrestore(shost->host_lock, flags); | |
1681 | return count; | |
1682 | } | |
a53eb5e0 | 1683 | |
43ca910a MC |
1684 | fc_private_host_show_function(dev_loss_tmo, "%d\n", 20, ); |
1685 | static FC_DEVICE_ATTR(host, dev_loss_tmo, S_IRUGO | S_IWUSR, | |
1686 | show_fc_host_dev_loss_tmo, | |
1687 | store_fc_private_host_dev_loss_tmo); | |
1688 | ||
1689 | fc_private_host_rd_attr(npiv_vports_inuse, "%u\n", 20); | |
a53eb5e0 | 1690 | |
1da177e4 LT |
1691 | /* |
1692 | * Host Statistics Management | |
1693 | */ | |
1694 | ||
1695 | /* Show a given an attribute in the statistics group */ | |
1696 | static ssize_t | |
ee959b00 | 1697 | fc_stat_show(const struct device *dev, char *buf, unsigned long offset) |
1da177e4 | 1698 | { |
ee959b00 | 1699 | struct Scsi_Host *shost = transport_class_to_shost(dev); |
1da177e4 LT |
1700 | struct fc_internal *i = to_fc_internal(shost->transportt); |
1701 | struct fc_host_statistics *stats; | |
1702 | ssize_t ret = -ENOENT; | |
1703 | ||
1704 | if (offset > sizeof(struct fc_host_statistics) || | |
1705 | offset % sizeof(u64) != 0) | |
1706 | WARN_ON(1); | |
1707 | ||
1708 | if (i->f->get_fc_host_stats) { | |
1709 | stats = (i->f->get_fc_host_stats)(shost); | |
1710 | if (stats) | |
1711 | ret = snprintf(buf, 20, "0x%llx\n", | |
1712 | (unsigned long long)*(u64 *)(((u8 *) stats) + offset)); | |
1713 | } | |
1714 | return ret; | |
1715 | } | |
1716 | ||
1717 | ||
1718 | /* generate a read-only statistics attribute */ | |
1719 | #define fc_host_statistic(name) \ | |
ee959b00 TJ |
1720 | static ssize_t show_fcstat_##name(struct device *cd, \ |
1721 | struct device_attribute *attr, \ | |
1722 | char *buf) \ | |
1da177e4 LT |
1723 | { \ |
1724 | return fc_stat_show(cd, buf, \ | |
1725 | offsetof(struct fc_host_statistics, name)); \ | |
1726 | } \ | |
ee959b00 | 1727 | static FC_DEVICE_ATTR(host, name, S_IRUGO, show_fcstat_##name, NULL) |
1da177e4 LT |
1728 | |
1729 | fc_host_statistic(seconds_since_last_reset); | |
1730 | fc_host_statistic(tx_frames); | |
1731 | fc_host_statistic(tx_words); | |
1732 | fc_host_statistic(rx_frames); | |
1733 | fc_host_statistic(rx_words); | |
1734 | fc_host_statistic(lip_count); | |
1735 | fc_host_statistic(nos_count); | |
1736 | fc_host_statistic(error_frames); | |
1737 | fc_host_statistic(dumped_frames); | |
1738 | fc_host_statistic(link_failure_count); | |
1739 | fc_host_statistic(loss_of_sync_count); | |
1740 | fc_host_statistic(loss_of_signal_count); | |
1741 | fc_host_statistic(prim_seq_protocol_err_count); | |
1742 | fc_host_statistic(invalid_tx_word_count); | |
1743 | fc_host_statistic(invalid_crc_count); | |
1744 | fc_host_statistic(fcp_input_requests); | |
1745 | fc_host_statistic(fcp_output_requests); | |
1746 | fc_host_statistic(fcp_control_requests); | |
1747 | fc_host_statistic(fcp_input_megabytes); | |
1748 | fc_host_statistic(fcp_output_megabytes); | |
e58abb0c VD |
1749 | fc_host_statistic(fcp_packet_alloc_failures); |
1750 | fc_host_statistic(fcp_packet_aborts); | |
1751 | fc_host_statistic(fcp_frame_alloc_failures); | |
1752 | fc_host_statistic(fc_no_free_exch); | |
1753 | fc_host_statistic(fc_no_free_exch_xid); | |
1754 | fc_host_statistic(fc_xid_not_found); | |
1755 | fc_host_statistic(fc_xid_busy); | |
1756 | fc_host_statistic(fc_seq_not_found); | |
1757 | fc_host_statistic(fc_non_bls_resp); | |
1da177e4 LT |
1758 | |
1759 | static ssize_t | |
ee959b00 TJ |
1760 | fc_reset_statistics(struct device *dev, struct device_attribute *attr, |
1761 | const char *buf, size_t count) | |
1da177e4 | 1762 | { |
ee959b00 | 1763 | struct Scsi_Host *shost = transport_class_to_shost(dev); |
1da177e4 LT |
1764 | struct fc_internal *i = to_fc_internal(shost->transportt); |
1765 | ||
1766 | /* ignore any data value written to the attribute */ | |
1767 | if (i->f->reset_fc_host_stats) { | |
1768 | i->f->reset_fc_host_stats(shost); | |
1769 | return count; | |
1770 | } | |
1771 | ||
1772 | return -ENOENT; | |
1773 | } | |
ee959b00 | 1774 | static FC_DEVICE_ATTR(host, reset_statistics, S_IWUSR, NULL, |
1da177e4 LT |
1775 | fc_reset_statistics); |
1776 | ||
1da177e4 | 1777 | static struct attribute *fc_statistics_attrs[] = { |
ee959b00 TJ |
1778 | &device_attr_host_seconds_since_last_reset.attr, |
1779 | &device_attr_host_tx_frames.attr, | |
1780 | &device_attr_host_tx_words.attr, | |
1781 | &device_attr_host_rx_frames.attr, | |
1782 | &device_attr_host_rx_words.attr, | |
1783 | &device_attr_host_lip_count.attr, | |
1784 | &device_attr_host_nos_count.attr, | |
1785 | &device_attr_host_error_frames.attr, | |
1786 | &device_attr_host_dumped_frames.attr, | |
1787 | &device_attr_host_link_failure_count.attr, | |
1788 | &device_attr_host_loss_of_sync_count.attr, | |
1789 | &device_attr_host_loss_of_signal_count.attr, | |
1790 | &device_attr_host_prim_seq_protocol_err_count.attr, | |
1791 | &device_attr_host_invalid_tx_word_count.attr, | |
1792 | &device_attr_host_invalid_crc_count.attr, | |
1793 | &device_attr_host_fcp_input_requests.attr, | |
1794 | &device_attr_host_fcp_output_requests.attr, | |
1795 | &device_attr_host_fcp_control_requests.attr, | |
1796 | &device_attr_host_fcp_input_megabytes.attr, | |
1797 | &device_attr_host_fcp_output_megabytes.attr, | |
e58abb0c VD |
1798 | &device_attr_host_fcp_packet_alloc_failures.attr, |
1799 | &device_attr_host_fcp_packet_aborts.attr, | |
1800 | &device_attr_host_fcp_frame_alloc_failures.attr, | |
1801 | &device_attr_host_fc_no_free_exch.attr, | |
1802 | &device_attr_host_fc_no_free_exch_xid.attr, | |
1803 | &device_attr_host_fc_xid_not_found.attr, | |
1804 | &device_attr_host_fc_xid_busy.attr, | |
1805 | &device_attr_host_fc_seq_not_found.attr, | |
1806 | &device_attr_host_fc_non_bls_resp.attr, | |
ee959b00 | 1807 | &device_attr_host_reset_statistics.attr, |
1da177e4 LT |
1808 | NULL |
1809 | }; | |
1810 | ||
1811 | static struct attribute_group fc_statistics_group = { | |
1812 | .name = "statistics", | |
1813 | .attrs = fc_statistics_attrs, | |
1814 | }; | |
1815 | ||
a53eb5e0 JS |
1816 | |
1817 | /* Host Vport Attributes */ | |
1818 | ||
1819 | static int | |
1820 | fc_parse_wwn(const char *ns, u64 *nm) | |
1821 | { | |
1822 | unsigned int i, j; | |
1823 | u8 wwn[8]; | |
1824 | ||
1825 | memset(wwn, 0, sizeof(wwn)); | |
1826 | ||
1827 | /* Validate and store the new name */ | |
1828 | for (i=0, j=0; i < 16; i++) { | |
ecc30990 AS |
1829 | int value; |
1830 | ||
1831 | value = hex_to_bin(*ns++); | |
1832 | if (value >= 0) | |
1833 | j = (j << 4) | value; | |
a53eb5e0 JS |
1834 | else |
1835 | return -EINVAL; | |
1836 | if (i % 2) { | |
1837 | wwn[i/2] = j & 0xff; | |
1838 | j = 0; | |
1839 | } | |
1840 | } | |
1841 | ||
1842 | *nm = wwn_to_u64(wwn); | |
1843 | ||
1844 | return 0; | |
1845 | } | |
1846 | ||
1847 | ||
1848 | /* | |
1849 | * "Short-cut" sysfs variable to create a new vport on a FC Host. | |
1850 | * Input is a string of the form "<WWPN>:<WWNN>". Other attributes | |
1851 | * will default to a NPIV-based FCP_Initiator; The WWNs are specified | |
1852 | * as hex characters, and may *not* contain any prefixes (e.g. 0x, x, etc) | |
1853 | */ | |
1854 | static ssize_t | |
ee959b00 TJ |
1855 | store_fc_host_vport_create(struct device *dev, struct device_attribute *attr, |
1856 | const char *buf, size_t count) | |
a53eb5e0 | 1857 | { |
ee959b00 | 1858 | struct Scsi_Host *shost = transport_class_to_shost(dev); |
a53eb5e0 JS |
1859 | struct fc_vport_identifiers vid; |
1860 | struct fc_vport *vport; | |
1861 | unsigned int cnt=count; | |
1862 | int stat; | |
1863 | ||
1864 | memset(&vid, 0, sizeof(vid)); | |
1865 | ||
1866 | /* count may include a LF at end of string */ | |
1867 | if (buf[cnt-1] == '\n') | |
1868 | cnt--; | |
1869 | ||
1870 | /* validate we have enough characters for WWPN */ | |
1871 | if ((cnt != (16+1+16)) || (buf[16] != ':')) | |
1872 | return -EINVAL; | |
1873 | ||
1874 | stat = fc_parse_wwn(&buf[0], &vid.port_name); | |
1875 | if (stat) | |
1876 | return stat; | |
1877 | ||
1878 | stat = fc_parse_wwn(&buf[17], &vid.node_name); | |
1879 | if (stat) | |
1880 | return stat; | |
1881 | ||
1882 | vid.roles = FC_PORT_ROLE_FCP_INITIATOR; | |
1883 | vid.vport_type = FC_PORTTYPE_NPIV; | |
1884 | /* vid.symbolic_name is already zero/NULL's */ | |
1885 | vid.disable = false; /* always enabled */ | |
1886 | ||
1887 | /* we only allow support on Channel 0 !!! */ | |
a30c3f69 | 1888 | stat = fc_vport_setup(shost, 0, &shost->shost_gendev, &vid, &vport); |
a53eb5e0 JS |
1889 | return stat ? stat : count; |
1890 | } | |
ee959b00 | 1891 | static FC_DEVICE_ATTR(host, vport_create, S_IWUSR, NULL, |
a53eb5e0 JS |
1892 | store_fc_host_vport_create); |
1893 | ||
1894 | ||
1895 | /* | |
1896 | * "Short-cut" sysfs variable to delete a vport on a FC Host. | |
1897 | * Vport is identified by a string containing "<WWPN>:<WWNN>". | |
1898 | * The WWNs are specified as hex characters, and may *not* contain | |
1899 | * any prefixes (e.g. 0x, x, etc) | |
1900 | */ | |
1901 | static ssize_t | |
ee959b00 TJ |
1902 | store_fc_host_vport_delete(struct device *dev, struct device_attribute *attr, |
1903 | const char *buf, size_t count) | |
a53eb5e0 | 1904 | { |
ee959b00 | 1905 | struct Scsi_Host *shost = transport_class_to_shost(dev); |
a53eb5e0 JS |
1906 | struct fc_host_attrs *fc_host = shost_to_fc_host(shost); |
1907 | struct fc_vport *vport; | |
1908 | u64 wwpn, wwnn; | |
1909 | unsigned long flags; | |
1910 | unsigned int cnt=count; | |
1911 | int stat, match; | |
1912 | ||
1913 | /* count may include a LF at end of string */ | |
1914 | if (buf[cnt-1] == '\n') | |
1915 | cnt--; | |
1916 | ||
1917 | /* validate we have enough characters for WWPN */ | |
1918 | if ((cnt != (16+1+16)) || (buf[16] != ':')) | |
1919 | return -EINVAL; | |
1920 | ||
1921 | stat = fc_parse_wwn(&buf[0], &wwpn); | |
1922 | if (stat) | |
1923 | return stat; | |
1924 | ||
1925 | stat = fc_parse_wwn(&buf[17], &wwnn); | |
1926 | if (stat) | |
1927 | return stat; | |
1928 | ||
1929 | spin_lock_irqsave(shost->host_lock, flags); | |
1930 | match = 0; | |
1931 | /* we only allow support on Channel 0 !!! */ | |
1932 | list_for_each_entry(vport, &fc_host->vports, peers) { | |
1933 | if ((vport->channel == 0) && | |
1934 | (vport->port_name == wwpn) && (vport->node_name == wwnn)) { | |
0d9dc7c8 GR |
1935 | if (vport->flags & (FC_VPORT_DEL | FC_VPORT_CREATING)) |
1936 | break; | |
1937 | vport->flags |= FC_VPORT_DELETING; | |
a53eb5e0 JS |
1938 | match = 1; |
1939 | break; | |
1940 | } | |
1941 | } | |
1942 | spin_unlock_irqrestore(shost->host_lock, flags); | |
1943 | ||
1944 | if (!match) | |
1945 | return -ENODEV; | |
1946 | ||
1947 | stat = fc_vport_terminate(vport); | |
1948 | return stat ? stat : count; | |
1949 | } | |
ee959b00 | 1950 | static FC_DEVICE_ATTR(host, vport_delete, S_IWUSR, NULL, |
a53eb5e0 JS |
1951 | store_fc_host_vport_delete); |
1952 | ||
1953 | ||
1da177e4 LT |
1954 | static int fc_host_match(struct attribute_container *cont, |
1955 | struct device *dev) | |
1956 | { | |
1957 | struct Scsi_Host *shost; | |
1958 | struct fc_internal *i; | |
1959 | ||
1960 | if (!scsi_is_host_device(dev)) | |
1961 | return 0; | |
1962 | ||
1963 | shost = dev_to_shost(dev); | |
1964 | if (!shost->transportt || shost->transportt->host_attrs.ac.class | |
1965 | != &fc_host_class.class) | |
1966 | return 0; | |
1967 | ||
1968 | i = to_fc_internal(shost->transportt); | |
1969 | ||
1970 | return &i->t.host_attrs.ac == cont; | |
1971 | } | |
1972 | ||
1973 | static int fc_target_match(struct attribute_container *cont, | |
1974 | struct device *dev) | |
1975 | { | |
1976 | struct Scsi_Host *shost; | |
1977 | struct fc_internal *i; | |
1978 | ||
1979 | if (!scsi_is_target_device(dev)) | |
1980 | return 0; | |
1981 | ||
1982 | shost = dev_to_shost(dev->parent); | |
1983 | if (!shost->transportt || shost->transportt->host_attrs.ac.class | |
1984 | != &fc_host_class.class) | |
1985 | return 0; | |
1986 | ||
1987 | i = to_fc_internal(shost->transportt); | |
1988 | ||
1989 | return &i->t.target_attrs.ac == cont; | |
1990 | } | |
1991 | ||
1992 | static void fc_rport_dev_release(struct device *dev) | |
1993 | { | |
1994 | struct fc_rport *rport = dev_to_rport(dev); | |
1995 | put_device(dev->parent); | |
1996 | kfree(rport); | |
1997 | } | |
1998 | ||
1999 | int scsi_is_fc_rport(const struct device *dev) | |
2000 | { | |
2001 | return dev->release == fc_rport_dev_release; | |
2002 | } | |
2003 | EXPORT_SYMBOL(scsi_is_fc_rport); | |
2004 | ||
2005 | static int fc_rport_match(struct attribute_container *cont, | |
2006 | struct device *dev) | |
2007 | { | |
2008 | struct Scsi_Host *shost; | |
2009 | struct fc_internal *i; | |
2010 | ||
2011 | if (!scsi_is_fc_rport(dev)) | |
2012 | return 0; | |
2013 | ||
2014 | shost = dev_to_shost(dev->parent); | |
2015 | if (!shost->transportt || shost->transportt->host_attrs.ac.class | |
2016 | != &fc_host_class.class) | |
2017 | return 0; | |
2018 | ||
2019 | i = to_fc_internal(shost->transportt); | |
2020 | ||
2021 | return &i->rport_attr_cont.ac == cont; | |
2022 | } | |
2023 | ||
5c44cd2a | 2024 | |
a53eb5e0 JS |
2025 | static void fc_vport_dev_release(struct device *dev) |
2026 | { | |
2027 | struct fc_vport *vport = dev_to_vport(dev); | |
2028 | put_device(dev->parent); /* release kobj parent */ | |
2029 | kfree(vport); | |
2030 | } | |
2031 | ||
62055172 | 2032 | static int scsi_is_fc_vport(const struct device *dev) |
a53eb5e0 JS |
2033 | { |
2034 | return dev->release == fc_vport_dev_release; | |
2035 | } | |
a53eb5e0 JS |
2036 | |
2037 | static int fc_vport_match(struct attribute_container *cont, | |
2038 | struct device *dev) | |
2039 | { | |
2040 | struct fc_vport *vport; | |
2041 | struct Scsi_Host *shost; | |
2042 | struct fc_internal *i; | |
2043 | ||
2044 | if (!scsi_is_fc_vport(dev)) | |
2045 | return 0; | |
2046 | vport = dev_to_vport(dev); | |
2047 | ||
2048 | shost = vport_to_shost(vport); | |
2049 | if (!shost->transportt || shost->transportt->host_attrs.ac.class | |
2050 | != &fc_host_class.class) | |
2051 | return 0; | |
2052 | ||
2053 | i = to_fc_internal(shost->transportt); | |
2054 | return &i->vport_attr_cont.ac == cont; | |
2055 | } | |
2056 | ||
2057 | ||
c829c394 | 2058 | /** |
b6a05c82 | 2059 | * fc_eh_timed_out - FC Transport I/O timeout intercept handler |
c829c394 JS |
2060 | * @scmd: The SCSI command which timed out |
2061 | * | |
2062 | * This routine protects against error handlers getting invoked while a | |
2063 | * rport is in a blocked state, typically due to a temporarily loss of | |
2064 | * connectivity. If the error handlers are allowed to proceed, requests | |
2065 | * to abort i/o, reset the target, etc will likely fail as there is no way | |
2066 | * to communicate with the device to perform the requested function. These | |
2067 | * failures may result in the midlayer taking the device offline, requiring | |
2068 | * manual intervention to restore operation. | |
2069 | * | |
2070 | * This routine, called whenever an i/o times out, validates the state of | |
2071 | * the underlying rport. If the rport is blocked, it returns | |
2072 | * EH_RESET_TIMER, which will continue to reschedule the timeout. | |
2073 | * Eventually, either the device will return, or devloss_tmo will fire, | |
2074 | * and when the timeout then fires, it will be handled normally. | |
2075 | * If the rport is not blocked, normal error handling continues. | |
2076 | * | |
2077 | * Notes: | |
2078 | * This routine assumes no locks are held on entry. | |
eb44820c | 2079 | */ |
b6a05c82 CH |
2080 | enum blk_eh_timer_return |
2081 | fc_eh_timed_out(struct scsi_cmnd *scmd) | |
c829c394 JS |
2082 | { |
2083 | struct fc_rport *rport = starget_to_rport(scsi_target(scmd->device)); | |
2084 | ||
2085 | if (rport->port_state == FC_PORTSTATE_BLOCKED) | |
242f9dcb | 2086 | return BLK_EH_RESET_TIMER; |
c829c394 | 2087 | |
242f9dcb | 2088 | return BLK_EH_NOT_HANDLED; |
c829c394 | 2089 | } |
b6a05c82 | 2090 | EXPORT_SYMBOL(fc_eh_timed_out); |
c829c394 | 2091 | |
5c44cd2a | 2092 | /* |
bda23253 JS |
2093 | * Called by fc_user_scan to locate an rport on the shost that |
2094 | * matches the channel and target id, and invoke scsi_scan_target() | |
2095 | * on the rport. | |
5c44cd2a | 2096 | */ |
bda23253 | 2097 | static void |
9cb78c16 | 2098 | fc_user_scan_tgt(struct Scsi_Host *shost, uint channel, uint id, u64 lun) |
5c44cd2a JSEC |
2099 | { |
2100 | struct fc_rport *rport; | |
bda23253 JS |
2101 | unsigned long flags; |
2102 | ||
2103 | spin_lock_irqsave(shost->host_lock, flags); | |
5c44cd2a | 2104 | |
e02f3f59 CH |
2105 | list_for_each_entry(rport, &fc_host_rports(shost), peers) { |
2106 | if (rport->scsi_target_id == -1) | |
2107 | continue; | |
5c44cd2a | 2108 | |
0d2fcd9f HR |
2109 | if (rport->port_state != FC_PORTSTATE_ONLINE) |
2110 | continue; | |
2111 | ||
bda23253 JS |
2112 | if ((channel == rport->channel) && |
2113 | (id == rport->scsi_target_id)) { | |
2114 | spin_unlock_irqrestore(shost->host_lock, flags); | |
1d645088 HR |
2115 | scsi_scan_target(&rport->dev, channel, id, lun, |
2116 | SCSI_SCAN_MANUAL); | |
bda23253 | 2117 | return; |
e02f3f59 CH |
2118 | } |
2119 | } | |
2120 | ||
bda23253 JS |
2121 | spin_unlock_irqrestore(shost->host_lock, flags); |
2122 | } | |
2123 | ||
2124 | /* | |
2125 | * Called via sysfs scan routines. Necessary, as the FC transport | |
2126 | * wants to place all target objects below the rport object. So this | |
2127 | * routine must invoke the scsi_scan_target() routine with the rport | |
2128 | * object as the parent. | |
2129 | */ | |
2130 | static int | |
9cb78c16 | 2131 | fc_user_scan(struct Scsi_Host *shost, uint channel, uint id, u64 lun) |
bda23253 JS |
2132 | { |
2133 | uint chlo, chhi; | |
2134 | uint tgtlo, tgthi; | |
2135 | ||
2136 | if (((channel != SCAN_WILD_CARD) && (channel > shost->max_channel)) || | |
2137 | ((id != SCAN_WILD_CARD) && (id >= shost->max_id)) || | |
2138 | ((lun != SCAN_WILD_CARD) && (lun > shost->max_lun))) | |
2139 | return -EINVAL; | |
2140 | ||
2141 | if (channel == SCAN_WILD_CARD) { | |
2142 | chlo = 0; | |
2143 | chhi = shost->max_channel + 1; | |
2144 | } else { | |
2145 | chlo = channel; | |
2146 | chhi = channel + 1; | |
2147 | } | |
2148 | ||
2149 | if (id == SCAN_WILD_CARD) { | |
2150 | tgtlo = 0; | |
2151 | tgthi = shost->max_id; | |
2152 | } else { | |
2153 | tgtlo = id; | |
2154 | tgthi = id + 1; | |
2155 | } | |
2156 | ||
2157 | for ( ; chlo < chhi; chlo++) | |
2158 | for ( ; tgtlo < tgthi; tgtlo++) | |
2159 | fc_user_scan_tgt(shost, chlo, tgtlo, lun); | |
2160 | ||
e02f3f59 | 2161 | return 0; |
5c44cd2a JSEC |
2162 | } |
2163 | ||
1da177e4 LT |
2164 | struct scsi_transport_template * |
2165 | fc_attach_transport(struct fc_function_template *ft) | |
2166 | { | |
1da177e4 | 2167 | int count; |
24669f75 JS |
2168 | struct fc_internal *i = kzalloc(sizeof(struct fc_internal), |
2169 | GFP_KERNEL); | |
1da177e4 LT |
2170 | |
2171 | if (unlikely(!i)) | |
2172 | return NULL; | |
2173 | ||
1da177e4 LT |
2174 | i->t.target_attrs.ac.attrs = &i->starget_attrs[0]; |
2175 | i->t.target_attrs.ac.class = &fc_transport_class.class; | |
2176 | i->t.target_attrs.ac.match = fc_target_match; | |
2177 | i->t.target_size = sizeof(struct fc_starget_attrs); | |
2178 | transport_container_register(&i->t.target_attrs); | |
2179 | ||
2180 | i->t.host_attrs.ac.attrs = &i->host_attrs[0]; | |
2181 | i->t.host_attrs.ac.class = &fc_host_class.class; | |
2182 | i->t.host_attrs.ac.match = fc_host_match; | |
2183 | i->t.host_size = sizeof(struct fc_host_attrs); | |
2184 | if (ft->get_fc_host_stats) | |
2185 | i->t.host_attrs.statistics = &fc_statistics_group; | |
2186 | transport_container_register(&i->t.host_attrs); | |
2187 | ||
2188 | i->rport_attr_cont.ac.attrs = &i->rport_attrs[0]; | |
2189 | i->rport_attr_cont.ac.class = &fc_rport_class.class; | |
2190 | i->rport_attr_cont.ac.match = fc_rport_match; | |
2191 | transport_container_register(&i->rport_attr_cont); | |
2192 | ||
a53eb5e0 JS |
2193 | i->vport_attr_cont.ac.attrs = &i->vport_attrs[0]; |
2194 | i->vport_attr_cont.ac.class = &fc_vport_class.class; | |
2195 | i->vport_attr_cont.ac.match = fc_vport_match; | |
2196 | transport_container_register(&i->vport_attr_cont); | |
2197 | ||
1da177e4 LT |
2198 | i->f = ft; |
2199 | ||
2200 | /* Transport uses the shost workq for scsi scanning */ | |
2201 | i->t.create_work_queue = 1; | |
5c44cd2a | 2202 | |
e02f3f59 | 2203 | i->t.user_scan = fc_user_scan; |
9ef3e4a4 | 2204 | |
1da177e4 LT |
2205 | /* |
2206 | * Setup SCSI Target Attributes. | |
2207 | */ | |
2208 | count = 0; | |
2209 | SETUP_STARGET_ATTRIBUTE_RD(node_name); | |
2210 | SETUP_STARGET_ATTRIBUTE_RD(port_name); | |
2211 | SETUP_STARGET_ATTRIBUTE_RD(port_id); | |
2212 | ||
2213 | BUG_ON(count > FC_STARGET_NUM_ATTRS); | |
2214 | ||
2215 | i->starget_attrs[count] = NULL; | |
2216 | ||
2217 | ||
2218 | /* | |
2219 | * Setup SCSI Host Attributes. | |
2220 | */ | |
2221 | count=0; | |
2222 | SETUP_HOST_ATTRIBUTE_RD(node_name); | |
2223 | SETUP_HOST_ATTRIBUTE_RD(port_name); | |
6b7281d0 | 2224 | SETUP_HOST_ATTRIBUTE_RD(permanent_port_name); |
1da177e4 LT |
2225 | SETUP_HOST_ATTRIBUTE_RD(supported_classes); |
2226 | SETUP_HOST_ATTRIBUTE_RD(supported_fc4s); | |
1da177e4 LT |
2227 | SETUP_HOST_ATTRIBUTE_RD(supported_speeds); |
2228 | SETUP_HOST_ATTRIBUTE_RD(maxframe_size); | |
a53eb5e0 JS |
2229 | if (ft->vport_create) { |
2230 | SETUP_HOST_ATTRIBUTE_RD_NS(max_npiv_vports); | |
2231 | SETUP_HOST_ATTRIBUTE_RD_NS(npiv_vports_inuse); | |
2232 | } | |
1da177e4 | 2233 | SETUP_HOST_ATTRIBUTE_RD(serial_number); |
bb8ef587 NP |
2234 | SETUP_HOST_ATTRIBUTE_RD(manufacturer); |
2235 | SETUP_HOST_ATTRIBUTE_RD(model); | |
2236 | SETUP_HOST_ATTRIBUTE_RD(model_description); | |
2237 | SETUP_HOST_ATTRIBUTE_RD(hardware_version); | |
2238 | SETUP_HOST_ATTRIBUTE_RD(driver_version); | |
2239 | SETUP_HOST_ATTRIBUTE_RD(firmware_version); | |
2240 | SETUP_HOST_ATTRIBUTE_RD(optionrom_version); | |
1da177e4 LT |
2241 | |
2242 | SETUP_HOST_ATTRIBUTE_RD(port_id); | |
2243 | SETUP_HOST_ATTRIBUTE_RD(port_type); | |
2244 | SETUP_HOST_ATTRIBUTE_RD(port_state); | |
2245 | SETUP_HOST_ATTRIBUTE_RD(active_fc4s); | |
2246 | SETUP_HOST_ATTRIBUTE_RD(speed); | |
2247 | SETUP_HOST_ATTRIBUTE_RD(fabric_name); | |
016131b8 | 2248 | SETUP_HOST_ATTRIBUTE_RD(symbolic_name); |
b8d08210 | 2249 | SETUP_HOST_ATTRIBUTE_RW(system_hostname); |
1da177e4 LT |
2250 | |
2251 | /* Transport-managed attributes */ | |
43ca910a | 2252 | SETUP_PRIVATE_HOST_ATTRIBUTE_RW(dev_loss_tmo); |
1da177e4 | 2253 | SETUP_PRIVATE_HOST_ATTRIBUTE_RW(tgtid_bind_type); |
91ca7b01 AV |
2254 | if (ft->issue_fc_host_lip) |
2255 | SETUP_PRIVATE_HOST_ATTRIBUTE_RW(issue_lip); | |
a53eb5e0 JS |
2256 | if (ft->vport_create) |
2257 | SETUP_PRIVATE_HOST_ATTRIBUTE_RW(vport_create); | |
2258 | if (ft->vport_delete) | |
2259 | SETUP_PRIVATE_HOST_ATTRIBUTE_RW(vport_delete); | |
1da177e4 LT |
2260 | |
2261 | BUG_ON(count > FC_HOST_NUM_ATTRS); | |
2262 | ||
2263 | i->host_attrs[count] = NULL; | |
2264 | ||
2265 | /* | |
2266 | * Setup Remote Port Attributes. | |
2267 | */ | |
2268 | count=0; | |
2269 | SETUP_RPORT_ATTRIBUTE_RD(maxframe_size); | |
2270 | SETUP_RPORT_ATTRIBUTE_RD(supported_classes); | |
2271 | SETUP_RPORT_ATTRIBUTE_RW(dev_loss_tmo); | |
2272 | SETUP_PRIVATE_RPORT_ATTRIBUTE_RD(node_name); | |
2273 | SETUP_PRIVATE_RPORT_ATTRIBUTE_RD(port_name); | |
2274 | SETUP_PRIVATE_RPORT_ATTRIBUTE_RD(port_id); | |
2275 | SETUP_PRIVATE_RPORT_ATTRIBUTE_RD(roles); | |
2276 | SETUP_PRIVATE_RPORT_ATTRIBUTE_RD(port_state); | |
2277 | SETUP_PRIVATE_RPORT_ATTRIBUTE_RD(scsi_target_id); | |
fff9d40c | 2278 | SETUP_PRIVATE_RPORT_ATTRIBUTE_RW(fast_io_fail_tmo); |
1da177e4 LT |
2279 | |
2280 | BUG_ON(count > FC_RPORT_NUM_ATTRS); | |
2281 | ||
2282 | i->rport_attrs[count] = NULL; | |
2283 | ||
a53eb5e0 JS |
2284 | /* |
2285 | * Setup Virtual Port Attributes. | |
2286 | */ | |
2287 | count=0; | |
2288 | SETUP_PRIVATE_VPORT_ATTRIBUTE_RD(vport_state); | |
2289 | SETUP_PRIVATE_VPORT_ATTRIBUTE_RD(vport_last_state); | |
2290 | SETUP_PRIVATE_VPORT_ATTRIBUTE_RD(node_name); | |
2291 | SETUP_PRIVATE_VPORT_ATTRIBUTE_RD(port_name); | |
2292 | SETUP_PRIVATE_VPORT_ATTRIBUTE_RD(roles); | |
2293 | SETUP_PRIVATE_VPORT_ATTRIBUTE_RD(vport_type); | |
2294 | SETUP_VPORT_ATTRIBUTE_RW(symbolic_name); | |
2295 | SETUP_VPORT_ATTRIBUTE_WR(vport_delete); | |
2296 | SETUP_VPORT_ATTRIBUTE_WR(vport_disable); | |
2297 | ||
2298 | BUG_ON(count > FC_VPORT_NUM_ATTRS); | |
2299 | ||
2300 | i->vport_attrs[count] = NULL; | |
2301 | ||
1da177e4 LT |
2302 | return &i->t; |
2303 | } | |
2304 | EXPORT_SYMBOL(fc_attach_transport); | |
2305 | ||
2306 | void fc_release_transport(struct scsi_transport_template *t) | |
2307 | { | |
2308 | struct fc_internal *i = to_fc_internal(t); | |
2309 | ||
2310 | transport_container_unregister(&i->t.target_attrs); | |
2311 | transport_container_unregister(&i->t.host_attrs); | |
2312 | transport_container_unregister(&i->rport_attr_cont); | |
a53eb5e0 | 2313 | transport_container_unregister(&i->vport_attr_cont); |
1da177e4 LT |
2314 | |
2315 | kfree(i); | |
2316 | } | |
2317 | EXPORT_SYMBOL(fc_release_transport); | |
2318 | ||
aedf3497 JS |
2319 | /** |
2320 | * fc_queue_work - Queue work to the fc_host workqueue. | |
2321 | * @shost: Pointer to Scsi_Host bound to fc_host. | |
2322 | * @work: Work to queue for execution. | |
2323 | * | |
2324 | * Return value: | |
a0785edf JS |
2325 | * 1 - work queued for execution |
2326 | * 0 - work is already queued | |
2327 | * -EINVAL - work queue doesn't exist | |
eb44820c | 2328 | */ |
aedf3497 JS |
2329 | static int |
2330 | fc_queue_work(struct Scsi_Host *shost, struct work_struct *work) | |
2331 | { | |
2332 | if (unlikely(!fc_host_work_q(shost))) { | |
2333 | printk(KERN_ERR | |
2334 | "ERROR: FC host '%s' attempted to queue work, " | |
2335 | "when no workqueue created.\n", shost->hostt->name); | |
2336 | dump_stack(); | |
2337 | ||
2338 | return -EINVAL; | |
2339 | } | |
2340 | ||
2341 | return queue_work(fc_host_work_q(shost), work); | |
2342 | } | |
2343 | ||
2344 | /** | |
2345 | * fc_flush_work - Flush a fc_host's workqueue. | |
2346 | * @shost: Pointer to Scsi_Host bound to fc_host. | |
eb44820c | 2347 | */ |
aedf3497 JS |
2348 | static void |
2349 | fc_flush_work(struct Scsi_Host *shost) | |
2350 | { | |
2351 | if (!fc_host_work_q(shost)) { | |
2352 | printk(KERN_ERR | |
2353 | "ERROR: FC host '%s' attempted to flush work, " | |
2354 | "when no workqueue created.\n", shost->hostt->name); | |
2355 | dump_stack(); | |
2356 | return; | |
2357 | } | |
2358 | ||
2359 | flush_workqueue(fc_host_work_q(shost)); | |
2360 | } | |
2361 | ||
2362 | /** | |
2363 | * fc_queue_devloss_work - Schedule work for the fc_host devloss workqueue. | |
2364 | * @shost: Pointer to Scsi_Host bound to fc_host. | |
2365 | * @work: Work to queue for execution. | |
2366 | * @delay: jiffies to delay the work queuing | |
2367 | * | |
2368 | * Return value: | |
0f29b966 | 2369 | * 1 on success / 0 already queued / < 0 for error |
eb44820c | 2370 | */ |
aedf3497 | 2371 | static int |
c4028958 | 2372 | fc_queue_devloss_work(struct Scsi_Host *shost, struct delayed_work *work, |
aedf3497 JS |
2373 | unsigned long delay) |
2374 | { | |
2375 | if (unlikely(!fc_host_devloss_work_q(shost))) { | |
2376 | printk(KERN_ERR | |
2377 | "ERROR: FC host '%s' attempted to queue work, " | |
2378 | "when no workqueue created.\n", shost->hostt->name); | |
2379 | dump_stack(); | |
2380 | ||
2381 | return -EINVAL; | |
2382 | } | |
2383 | ||
2384 | return queue_delayed_work(fc_host_devloss_work_q(shost), work, delay); | |
2385 | } | |
2386 | ||
2387 | /** | |
2388 | * fc_flush_devloss - Flush a fc_host's devloss workqueue. | |
2389 | * @shost: Pointer to Scsi_Host bound to fc_host. | |
eb44820c | 2390 | */ |
aedf3497 JS |
2391 | static void |
2392 | fc_flush_devloss(struct Scsi_Host *shost) | |
2393 | { | |
2394 | if (!fc_host_devloss_work_q(shost)) { | |
2395 | printk(KERN_ERR | |
2396 | "ERROR: FC host '%s' attempted to flush work, " | |
2397 | "when no workqueue created.\n", shost->hostt->name); | |
2398 | dump_stack(); | |
2399 | return; | |
2400 | } | |
2401 | ||
2402 | flush_workqueue(fc_host_devloss_work_q(shost)); | |
2403 | } | |
2404 | ||
1da177e4 LT |
2405 | |
2406 | /** | |
eb44820c RL |
2407 | * fc_remove_host - called to terminate any fc_transport-related elements for a scsi host. |
2408 | * @shost: Which &Scsi_Host | |
1da177e4 | 2409 | * |
25985edc | 2410 | * This routine is expected to be called immediately preceding the |
1da177e4 LT |
2411 | * a driver's call to scsi_remove_host(). |
2412 | * | |
2413 | * WARNING: A driver utilizing the fc_transport, which fails to call | |
eb44820c | 2414 | * this routine prior to scsi_remove_host(), will leave dangling |
1da177e4 LT |
2415 | * objects in /sys/class/fc_remote_ports. Access to any of these |
2416 | * objects can result in a system crash !!! | |
2417 | * | |
2418 | * Notes: | |
2419 | * This routine assumes no locks are held on entry. | |
eb44820c | 2420 | */ |
1da177e4 LT |
2421 | void |
2422 | fc_remove_host(struct Scsi_Host *shost) | |
2423 | { | |
a53eb5e0 JS |
2424 | struct fc_vport *vport = NULL, *next_vport = NULL; |
2425 | struct fc_rport *rport = NULL, *next_rport = NULL; | |
aedf3497 JS |
2426 | struct workqueue_struct *work_q; |
2427 | struct fc_host_attrs *fc_host = shost_to_fc_host(shost); | |
a53eb5e0 | 2428 | unsigned long flags; |
a53eb5e0 JS |
2429 | |
2430 | spin_lock_irqsave(shost->host_lock, flags); | |
2431 | ||
2432 | /* Remove any vports */ | |
9ef3e4a4 JS |
2433 | list_for_each_entry_safe(vport, next_vport, &fc_host->vports, peers) |
2434 | fc_queue_work(shost, &vport->vport_delete_work); | |
1da177e4 LT |
2435 | |
2436 | /* Remove any remote ports */ | |
2437 | list_for_each_entry_safe(rport, next_rport, | |
aedf3497 JS |
2438 | &fc_host->rports, peers) { |
2439 | list_del(&rport->peers); | |
2440 | rport->port_state = FC_PORTSTATE_DELETED; | |
2441 | fc_queue_work(shost, &rport->rport_delete_work); | |
2442 | } | |
2443 | ||
1da177e4 | 2444 | list_for_each_entry_safe(rport, next_rport, |
aedf3497 JS |
2445 | &fc_host->rport_bindings, peers) { |
2446 | list_del(&rport->peers); | |
2447 | rport->port_state = FC_PORTSTATE_DELETED; | |
2448 | fc_queue_work(shost, &rport->rport_delete_work); | |
2449 | } | |
2450 | ||
a53eb5e0 JS |
2451 | spin_unlock_irqrestore(shost->host_lock, flags); |
2452 | ||
aedf3497 JS |
2453 | /* flush all scan work items */ |
2454 | scsi_flush_work(shost); | |
2455 | ||
2456 | /* flush all stgt delete, and rport delete work items, then kill it */ | |
2457 | if (fc_host->work_q) { | |
2458 | work_q = fc_host->work_q; | |
2459 | fc_host->work_q = NULL; | |
2460 | destroy_workqueue(work_q); | |
2461 | } | |
2462 | ||
2463 | /* flush all devloss work items, then kill it */ | |
2464 | if (fc_host->devloss_work_q) { | |
2465 | work_q = fc_host->devloss_work_q; | |
2466 | fc_host->devloss_work_q = NULL; | |
2467 | destroy_workqueue(work_q); | |
2468 | } | |
1da177e4 LT |
2469 | } |
2470 | EXPORT_SYMBOL(fc_remove_host); | |
2471 | ||
fff9d40c MC |
2472 | static void fc_terminate_rport_io(struct fc_rport *rport) |
2473 | { | |
2474 | struct Scsi_Host *shost = rport_to_shost(rport); | |
2475 | struct fc_internal *i = to_fc_internal(shost->transportt); | |
2476 | ||
2477 | /* Involve the LLDD if possible to terminate all io on the rport. */ | |
2478 | if (i->f->terminate_rport_io) | |
2479 | i->f->terminate_rport_io(rport); | |
2480 | ||
2481 | /* | |
5d9fb5cc | 2482 | * Must unblock to flush queued IO. scsi-ml will fail incoming reqs. |
fff9d40c | 2483 | */ |
5d9fb5cc | 2484 | scsi_target_unblock(&rport->dev, SDEV_TRANSPORT_OFFLINE); |
fff9d40c | 2485 | } |
aedf3497 JS |
2486 | |
2487 | /** | |
25985edc | 2488 | * fc_starget_delete - called to delete the scsi descendants of an rport |
c4028958 | 2489 | * @work: remote port to be operated on. |
eb44820c RL |
2490 | * |
2491 | * Deletes target and all sdevs. | |
2492 | */ | |
19a7b4ae | 2493 | static void |
c4028958 | 2494 | fc_starget_delete(struct work_struct *work) |
19a7b4ae | 2495 | { |
c4028958 DH |
2496 | struct fc_rport *rport = |
2497 | container_of(work, struct fc_rport, stgt_delete_work); | |
19a7b4ae | 2498 | |
fff9d40c | 2499 | fc_terminate_rport_io(rport); |
19a7b4ae JSEC |
2500 | scsi_remove_target(&rport->dev); |
2501 | } | |
2502 | ||
aedf3497 JS |
2503 | |
2504 | /** | |
2505 | * fc_rport_final_delete - finish rport termination and delete it. | |
c4028958 | 2506 | * @work: remote port to be deleted. |
eb44820c | 2507 | */ |
aedf3497 | 2508 | static void |
c4028958 | 2509 | fc_rport_final_delete(struct work_struct *work) |
aedf3497 | 2510 | { |
c4028958 DH |
2511 | struct fc_rport *rport = |
2512 | container_of(work, struct fc_rport, rport_delete_work); | |
aedf3497 JS |
2513 | struct device *dev = &rport->dev; |
2514 | struct Scsi_Host *shost = rport_to_shost(rport); | |
0f29b966 | 2515 | struct fc_internal *i = to_fc_internal(shost->transportt); |
92740b24 | 2516 | unsigned long flags; |
8798a694 | 2517 | int do_callback = 0; |
aedf3497 | 2518 | |
112f661d NNS |
2519 | fc_terminate_rport_io(rport); |
2520 | ||
aedf3497 | 2521 | /* |
9ef3e4a4 | 2522 | * if a scan is pending, flush the SCSI Host work_q so that |
aedf3497 JS |
2523 | * that we can reclaim the rport scan work element. |
2524 | */ | |
2525 | if (rport->flags & FC_RPORT_SCAN_PENDING) | |
2526 | scsi_flush_work(shost); | |
2527 | ||
92740b24 JS |
2528 | /* |
2529 | * Cancel any outstanding timers. These should really exist | |
2530 | * only when rmmod'ing the LLDD and we're asking for | |
2531 | * immediate termination of the rports | |
2532 | */ | |
2533 | spin_lock_irqsave(shost->host_lock, flags); | |
2534 | if (rport->flags & FC_RPORT_DEVLOSS_PENDING) { | |
2535 | spin_unlock_irqrestore(shost->host_lock, flags); | |
2536 | if (!cancel_delayed_work(&rport->fail_io_work)) | |
2537 | fc_flush_devloss(shost); | |
2538 | if (!cancel_delayed_work(&rport->dev_loss_work)) | |
2539 | fc_flush_devloss(shost); | |
0353e085 | 2540 | cancel_work_sync(&rport->scan_work); |
92740b24 JS |
2541 | spin_lock_irqsave(shost->host_lock, flags); |
2542 | rport->flags &= ~FC_RPORT_DEVLOSS_PENDING; | |
2543 | } | |
2544 | spin_unlock_irqrestore(shost->host_lock, flags); | |
2545 | ||
0f29b966 JS |
2546 | /* Delete SCSI target and sdevs */ |
2547 | if (rport->scsi_target_id != -1) | |
c4028958 | 2548 | fc_starget_delete(&rport->stgt_delete_work); |
92740b24 JS |
2549 | |
2550 | /* | |
2551 | * Notify the driver that the rport is now dead. The LLDD will | |
2552 | * also guarantee that any communication to the rport is terminated | |
4be98c0c JS |
2553 | * |
2554 | * Avoid this call if we already called it when we preserved the | |
2555 | * rport for the binding. | |
92740b24 | 2556 | */ |
8798a694 | 2557 | spin_lock_irqsave(shost->host_lock, flags); |
4be98c0c | 2558 | if (!(rport->flags & FC_RPORT_DEVLOSS_CALLBK_DONE) && |
8798a694 MR |
2559 | (i->f->dev_loss_tmo_callbk)) { |
2560 | rport->flags |= FC_RPORT_DEVLOSS_CALLBK_DONE; | |
2561 | do_callback = 1; | |
2562 | } | |
2563 | spin_unlock_irqrestore(shost->host_lock, flags); | |
2564 | ||
2565 | if (do_callback) | |
0f29b966 | 2566 | i->f->dev_loss_tmo_callbk(rport); |
0f29b966 | 2567 | |
9e4f5e29 JS |
2568 | fc_bsg_remove(rport->rqst_q); |
2569 | ||
aedf3497 JS |
2570 | transport_remove_device(dev); |
2571 | device_del(dev); | |
2572 | transport_destroy_device(dev); | |
4cd38e38 | 2573 | scsi_host_put(shost); /* for fc_host->rport list */ |
3bdad7bd | 2574 | put_device(dev); /* for self-reference */ |
aedf3497 JS |
2575 | } |
2576 | ||
2577 | ||
1da177e4 | 2578 | /** |
558b88fe | 2579 | * fc_remote_port_create - allocates and creates a remote FC port. |
1da177e4 LT |
2580 | * @shost: scsi host the remote port is connected to. |
2581 | * @channel: Channel on shost port connected to. | |
2582 | * @ids: The world wide names, fc address, and FC4 port | |
2583 | * roles for the remote port. | |
2584 | * | |
2585 | * Allocates and creates the remoter port structure, including the | |
2586 | * class and sysfs creation. | |
2587 | * | |
2588 | * Notes: | |
2589 | * This routine assumes no locks are held on entry. | |
eb44820c | 2590 | */ |
44818efb | 2591 | static struct fc_rport * |
558b88fe HR |
2592 | fc_remote_port_create(struct Scsi_Host *shost, int channel, |
2593 | struct fc_rport_identifiers *ids) | |
1da177e4 | 2594 | { |
aedf3497 | 2595 | struct fc_host_attrs *fc_host = shost_to_fc_host(shost); |
1da177e4 LT |
2596 | struct fc_internal *fci = to_fc_internal(shost->transportt); |
2597 | struct fc_rport *rport; | |
2598 | struct device *dev; | |
2599 | unsigned long flags; | |
2600 | int error; | |
2601 | size_t size; | |
2602 | ||
2603 | size = (sizeof(struct fc_rport) + fci->f->dd_fcrport_size); | |
24669f75 | 2604 | rport = kzalloc(size, GFP_KERNEL); |
1da177e4 | 2605 | if (unlikely(!rport)) { |
cadbd4a5 | 2606 | printk(KERN_ERR "%s: allocation failure\n", __func__); |
1da177e4 LT |
2607 | return NULL; |
2608 | } | |
1da177e4 LT |
2609 | |
2610 | rport->maxframe_size = -1; | |
2611 | rport->supported_classes = FC_COS_UNSPECIFIED; | |
43ca910a | 2612 | rport->dev_loss_tmo = fc_host->dev_loss_tmo; |
1da177e4 LT |
2613 | memcpy(&rport->node_name, &ids->node_name, sizeof(rport->node_name)); |
2614 | memcpy(&rport->port_name, &ids->port_name, sizeof(rport->port_name)); | |
2615 | rport->port_id = ids->port_id; | |
2616 | rport->roles = ids->roles; | |
2617 | rport->port_state = FC_PORTSTATE_ONLINE; | |
2618 | if (fci->f->dd_fcrport_size) | |
2619 | rport->dd_data = &rport[1]; | |
2620 | rport->channel = channel; | |
0f29b966 | 2621 | rport->fast_io_fail_tmo = -1; |
1da177e4 | 2622 | |
c4028958 DH |
2623 | INIT_DELAYED_WORK(&rport->dev_loss_work, fc_timeout_deleted_rport); |
2624 | INIT_DELAYED_WORK(&rport->fail_io_work, fc_timeout_fail_rport_io); | |
2625 | INIT_WORK(&rport->scan_work, fc_scsi_scan_rport); | |
2626 | INIT_WORK(&rport->stgt_delete_work, fc_starget_delete); | |
2627 | INIT_WORK(&rport->rport_delete_work, fc_rport_final_delete); | |
1da177e4 LT |
2628 | |
2629 | spin_lock_irqsave(shost->host_lock, flags); | |
2630 | ||
2631 | rport->number = fc_host->next_rport_number++; | |
0c3ae266 CA |
2632 | if ((rport->roles & FC_PORT_ROLE_FCP_TARGET) || |
2633 | (rport->roles & FC_PORT_ROLE_FCP_DUMMY_INITIATOR)) | |
1da177e4 LT |
2634 | rport->scsi_target_id = fc_host->next_target_id++; |
2635 | else | |
2636 | rport->scsi_target_id = -1; | |
aedf3497 | 2637 | list_add_tail(&rport->peers, &fc_host->rports); |
4cd38e38 | 2638 | scsi_host_get(shost); /* for fc_host->rport list */ |
1da177e4 LT |
2639 | |
2640 | spin_unlock_irqrestore(shost->host_lock, flags); | |
2641 | ||
2642 | dev = &rport->dev; | |
3bdad7bd JS |
2643 | device_initialize(dev); /* takes self reference */ |
2644 | dev->parent = get_device(&shost->shost_gendev); /* parent reference */ | |
1da177e4 | 2645 | dev->release = fc_rport_dev_release; |
71610f55 KS |
2646 | dev_set_name(dev, "rport-%d:%d-%d", |
2647 | shost->host_no, channel, rport->number); | |
1da177e4 LT |
2648 | transport_setup_device(dev); |
2649 | ||
2650 | error = device_add(dev); | |
2651 | if (error) { | |
2652 | printk(KERN_ERR "FC Remote Port device_add failed\n"); | |
2653 | goto delete_rport; | |
2654 | } | |
2655 | transport_add_device(dev); | |
2656 | transport_configure_device(dev); | |
2657 | ||
9e4f5e29 JS |
2658 | fc_bsg_rportadd(shost, rport); |
2659 | /* ignore any bsg add error - we just can't do sgio */ | |
2660 | ||
a53eb5e0 | 2661 | if (rport->roles & FC_PORT_ROLE_FCP_TARGET) { |
1da177e4 | 2662 | /* initiate a scan of the target */ |
aedf3497 | 2663 | rport->flags |= FC_RPORT_SCAN_PENDING; |
1da177e4 | 2664 | scsi_queue_work(shost, &rport->scan_work); |
aedf3497 | 2665 | } |
1da177e4 LT |
2666 | |
2667 | return rport; | |
2668 | ||
2669 | delete_rport: | |
2670 | transport_destroy_device(dev); | |
1da177e4 LT |
2671 | spin_lock_irqsave(shost->host_lock, flags); |
2672 | list_del(&rport->peers); | |
4cd38e38 | 2673 | scsi_host_put(shost); /* for fc_host->rport list */ |
1da177e4 LT |
2674 | spin_unlock_irqrestore(shost->host_lock, flags); |
2675 | put_device(dev->parent); | |
2676 | kfree(rport); | |
2677 | return NULL; | |
2678 | } | |
2679 | ||
2680 | /** | |
eb44820c | 2681 | * fc_remote_port_add - notify fc transport of the existence of a remote FC port. |
1da177e4 LT |
2682 | * @shost: scsi host the remote port is connected to. |
2683 | * @channel: Channel on shost port connected to. | |
2684 | * @ids: The world wide names, fc address, and FC4 port | |
2685 | * roles for the remote port. | |
2686 | * | |
2687 | * The LLDD calls this routine to notify the transport of the existence | |
2688 | * of a remote port. The LLDD provides the unique identifiers (wwpn,wwn) | |
2689 | * of the port, it's FC address (port_id), and the FC4 roles that are | |
2690 | * active for the port. | |
2691 | * | |
2692 | * For ports that are FCP targets (aka scsi targets), the FC transport | |
2693 | * maintains consistent target id bindings on behalf of the LLDD. | |
2694 | * A consistent target id binding is an assignment of a target id to | |
2695 | * a remote port identifier, which persists while the scsi host is | |
2696 | * attached. The remote port can disappear, then later reappear, and | |
2697 | * it's target id assignment remains the same. This allows for shifts | |
2698 | * in FC addressing (if binding by wwpn or wwnn) with no apparent | |
2699 | * changes to the scsi subsystem which is based on scsi host number and | |
2700 | * target id values. Bindings are only valid during the attachment of | |
2701 | * the scsi host. If the host detaches, then later re-attaches, target | |
2702 | * id bindings may change. | |
2703 | * | |
2704 | * This routine is responsible for returning a remote port structure. | |
2705 | * The routine will search the list of remote ports it maintains | |
2706 | * internally on behalf of consistent target id mappings. If found, the | |
2707 | * remote port structure will be reused. Otherwise, a new remote port | |
2708 | * structure will be allocated. | |
2709 | * | |
2710 | * Whenever a remote port is allocated, a new fc_remote_port class | |
2711 | * device is created. | |
2712 | * | |
2713 | * Should not be called from interrupt context. | |
2714 | * | |
2715 | * Notes: | |
2716 | * This routine assumes no locks are held on entry. | |
eb44820c | 2717 | */ |
1da177e4 LT |
2718 | struct fc_rport * |
2719 | fc_remote_port_add(struct Scsi_Host *shost, int channel, | |
2720 | struct fc_rport_identifiers *ids) | |
2721 | { | |
19a7b4ae | 2722 | struct fc_internal *fci = to_fc_internal(shost->transportt); |
aedf3497 | 2723 | struct fc_host_attrs *fc_host = shost_to_fc_host(shost); |
1da177e4 LT |
2724 | struct fc_rport *rport; |
2725 | unsigned long flags; | |
2726 | int match = 0; | |
2727 | ||
aedf3497 JS |
2728 | /* ensure any stgt delete functions are done */ |
2729 | fc_flush_work(shost); | |
2730 | ||
19a7b4ae JSEC |
2731 | /* |
2732 | * Search the list of "active" rports, for an rport that has been | |
2733 | * deleted, but we've held off the real delete while the target | |
2734 | * is in a "blocked" state. | |
2735 | */ | |
2736 | spin_lock_irqsave(shost->host_lock, flags); | |
2737 | ||
aedf3497 | 2738 | list_for_each_entry(rport, &fc_host->rports, peers) { |
19a7b4ae JSEC |
2739 | |
2740 | if ((rport->port_state == FC_PORTSTATE_BLOCKED) && | |
2741 | (rport->channel == channel)) { | |
2742 | ||
aedf3497 | 2743 | switch (fc_host->tgtid_bind_type) { |
19a7b4ae JSEC |
2744 | case FC_TGTID_BIND_BY_WWPN: |
2745 | case FC_TGTID_BIND_NONE: | |
2746 | if (rport->port_name == ids->port_name) | |
2747 | match = 1; | |
2748 | break; | |
2749 | case FC_TGTID_BIND_BY_WWNN: | |
2750 | if (rport->node_name == ids->node_name) | |
2751 | match = 1; | |
2752 | break; | |
2753 | case FC_TGTID_BIND_BY_ID: | |
2754 | if (rport->port_id == ids->port_id) | |
2755 | match = 1; | |
2756 | break; | |
2757 | } | |
2758 | ||
2759 | if (match) { | |
19a7b4ae JSEC |
2760 | |
2761 | memcpy(&rport->node_name, &ids->node_name, | |
2762 | sizeof(rport->node_name)); | |
2763 | memcpy(&rport->port_name, &ids->port_name, | |
2764 | sizeof(rport->port_name)); | |
2765 | rport->port_id = ids->port_id; | |
2766 | ||
2767 | rport->port_state = FC_PORTSTATE_ONLINE; | |
2768 | rport->roles = ids->roles; | |
2769 | ||
2770 | spin_unlock_irqrestore(shost->host_lock, flags); | |
2771 | ||
2772 | if (fci->f->dd_fcrport_size) | |
2773 | memset(rport->dd_data, 0, | |
2774 | fci->f->dd_fcrport_size); | |
2775 | ||
2776 | /* | |
92740b24 JS |
2777 | * If we were not a target, cancel the |
2778 | * io terminate and rport timers, and | |
2779 | * we're done. | |
2780 | * | |
2781 | * If we were a target, but our new role | |
2782 | * doesn't indicate a target, leave the | |
2783 | * timers running expecting the role to | |
2784 | * change as the target fully logs in. If | |
2785 | * it doesn't, the target will be torn down. | |
2786 | * | |
2787 | * If we were a target, and our role shows | |
2788 | * we're still a target, cancel the timers | |
2789 | * and kick off a scan. | |
19a7b4ae | 2790 | */ |
19a7b4ae | 2791 | |
92740b24 JS |
2792 | /* was a target, not in roles */ |
2793 | if ((rport->scsi_target_id != -1) && | |
a53eb5e0 | 2794 | (!(ids->roles & FC_PORT_ROLE_FCP_TARGET))) |
92740b24 | 2795 | return rport; |
19a7b4ae JSEC |
2796 | |
2797 | /* | |
92740b24 JS |
2798 | * Stop the fail io and dev_loss timers. |
2799 | * If they flush, the port_state will | |
2800 | * be checked and will NOOP the function. | |
19a7b4ae | 2801 | */ |
0f29b966 JS |
2802 | if (!cancel_delayed_work(&rport->fail_io_work)) |
2803 | fc_flush_devloss(shost); | |
92740b24 | 2804 | if (!cancel_delayed_work(&rport->dev_loss_work)) |
aedf3497 JS |
2805 | fc_flush_devloss(shost); |
2806 | ||
2807 | spin_lock_irqsave(shost->host_lock, flags); | |
2808 | ||
fff9d40c | 2809 | rport->flags &= ~(FC_RPORT_FAST_FAIL_TIMEDOUT | |
4be98c0c JS |
2810 | FC_RPORT_DEVLOSS_PENDING | |
2811 | FC_RPORT_DEVLOSS_CALLBK_DONE); | |
19a7b4ae | 2812 | |
8fb2ef89 MC |
2813 | spin_unlock_irqrestore(shost->host_lock, flags); |
2814 | ||
92740b24 JS |
2815 | /* if target, initiate a scan */ |
2816 | if (rport->scsi_target_id != -1) { | |
5d9fb5cc MC |
2817 | scsi_target_unblock(&rport->dev, |
2818 | SDEV_RUNNING); | |
8fb2ef89 MC |
2819 | spin_lock_irqsave(shost->host_lock, |
2820 | flags); | |
92740b24 JS |
2821 | rport->flags |= FC_RPORT_SCAN_PENDING; |
2822 | scsi_queue_work(shost, | |
2823 | &rport->scan_work); | |
2824 | spin_unlock_irqrestore(shost->host_lock, | |
2825 | flags); | |
8fb2ef89 | 2826 | } |
a0785edf | 2827 | |
9e4f5e29 JS |
2828 | fc_bsg_goose_queue(rport); |
2829 | ||
19a7b4ae JSEC |
2830 | return rport; |
2831 | } | |
2832 | } | |
2833 | } | |
2834 | ||
92740b24 JS |
2835 | /* |
2836 | * Search the bindings array | |
2837 | * Note: if never a FCP target, you won't be on this list | |
2838 | */ | |
aedf3497 | 2839 | if (fc_host->tgtid_bind_type != FC_TGTID_BIND_NONE) { |
1da177e4 LT |
2840 | |
2841 | /* search for a matching consistent binding */ | |
2842 | ||
aedf3497 | 2843 | list_for_each_entry(rport, &fc_host->rport_bindings, |
1da177e4 LT |
2844 | peers) { |
2845 | if (rport->channel != channel) | |
2846 | continue; | |
2847 | ||
aedf3497 | 2848 | switch (fc_host->tgtid_bind_type) { |
1da177e4 LT |
2849 | case FC_TGTID_BIND_BY_WWPN: |
2850 | if (rport->port_name == ids->port_name) | |
2851 | match = 1; | |
2852 | break; | |
2853 | case FC_TGTID_BIND_BY_WWNN: | |
2854 | if (rport->node_name == ids->node_name) | |
2855 | match = 1; | |
2856 | break; | |
2857 | case FC_TGTID_BIND_BY_ID: | |
2858 | if (rport->port_id == ids->port_id) | |
2859 | match = 1; | |
2860 | break; | |
2861 | case FC_TGTID_BIND_NONE: /* to keep compiler happy */ | |
2862 | break; | |
2863 | } | |
2864 | ||
2865 | if (match) { | |
aedf3497 | 2866 | list_move_tail(&rport->peers, &fc_host->rports); |
1da177e4 LT |
2867 | break; |
2868 | } | |
2869 | } | |
2870 | ||
1da177e4 LT |
2871 | if (match) { |
2872 | memcpy(&rport->node_name, &ids->node_name, | |
2873 | sizeof(rport->node_name)); | |
2874 | memcpy(&rport->port_name, &ids->port_name, | |
2875 | sizeof(rport->port_name)); | |
2876 | rport->port_id = ids->port_id; | |
2877 | rport->roles = ids->roles; | |
2878 | rport->port_state = FC_PORTSTATE_ONLINE; | |
fff9d40c | 2879 | rport->flags &= ~FC_RPORT_FAST_FAIL_TIMEDOUT; |
1da177e4 | 2880 | |
19a7b4ae JSEC |
2881 | if (fci->f->dd_fcrport_size) |
2882 | memset(rport->dd_data, 0, | |
2883 | fci->f->dd_fcrport_size); | |
8fb2ef89 MC |
2884 | spin_unlock_irqrestore(shost->host_lock, flags); |
2885 | ||
2886 | if (ids->roles & FC_PORT_ROLE_FCP_TARGET) { | |
5d9fb5cc | 2887 | scsi_target_unblock(&rport->dev, SDEV_RUNNING); |
19a7b4ae | 2888 | |
1da177e4 | 2889 | /* initiate a scan of the target */ |
8fb2ef89 | 2890 | spin_lock_irqsave(shost->host_lock, flags); |
aedf3497 | 2891 | rport->flags |= FC_RPORT_SCAN_PENDING; |
1da177e4 | 2892 | scsi_queue_work(shost, &rport->scan_work); |
a0785edf | 2893 | spin_unlock_irqrestore(shost->host_lock, flags); |
8fb2ef89 | 2894 | } |
1da177e4 LT |
2895 | return rport; |
2896 | } | |
2897 | } | |
2898 | ||
19a7b4ae JSEC |
2899 | spin_unlock_irqrestore(shost->host_lock, flags); |
2900 | ||
1da177e4 | 2901 | /* No consistent binding found - create new remote port entry */ |
558b88fe | 2902 | rport = fc_remote_port_create(shost, channel, ids); |
1da177e4 LT |
2903 | |
2904 | return rport; | |
2905 | } | |
2906 | EXPORT_SYMBOL(fc_remote_port_add); | |
2907 | ||
1da177e4 LT |
2908 | |
2909 | /** | |
eb44820c | 2910 | * fc_remote_port_delete - notifies the fc transport that a remote port is no longer in existence. |
1da177e4 LT |
2911 | * @rport: The remote port that no longer exists |
2912 | * | |
2913 | * The LLDD calls this routine to notify the transport that a remote | |
2914 | * port is no longer part of the topology. Note: Although a port | |
2915 | * may no longer be part of the topology, it may persist in the remote | |
19a7b4ae | 2916 | * ports displayed by the fc_host. We do this under 2 conditions: |
eb44820c | 2917 | * 1) If the port was a scsi target, we delay its deletion by "blocking" it. |
19a7b4ae JSEC |
2918 | * This allows the port to temporarily disappear, then reappear without |
2919 | * disrupting the SCSI device tree attached to it. During the "blocked" | |
2920 | * period the port will still exist. | |
eb44820c | 2921 | * 2) If the port was a scsi target and disappears for longer than we |
19a7b4ae JSEC |
2922 | * expect, we'll delete the port and the tear down the SCSI device tree |
2923 | * attached to it. However, we want to semi-persist the target id assigned | |
2924 | * to that port if it eventually does exist. The port structure will | |
2925 | * remain (although with minimal information) so that the target id | |
2926 | * bindings remails. | |
1da177e4 LT |
2927 | * |
2928 | * If the remote port is not an FCP Target, it will be fully torn down | |
2929 | * and deallocated, including the fc_remote_port class device. | |
2930 | * | |
19a7b4ae JSEC |
2931 | * If the remote port is an FCP Target, the port will be placed in a |
2932 | * temporary blocked state. From the LLDD's perspective, the rport no | |
2933 | * longer exists. From the SCSI midlayer's perspective, the SCSI target | |
2934 | * exists, but all sdevs on it are blocked from further I/O. The following | |
eb44820c RL |
2935 | * is then expected. |
2936 | * | |
19a7b4ae JSEC |
2937 | * If the remote port does not return (signaled by a LLDD call to |
2938 | * fc_remote_port_add()) within the dev_loss_tmo timeout, then the | |
2939 | * scsi target is removed - killing all outstanding i/o and removing the | |
2940 | * scsi devices attached ot it. The port structure will be marked Not | |
2941 | * Present and be partially cleared, leaving only enough information to | |
2942 | * recognize the remote port relative to the scsi target id binding if | |
2943 | * it later appears. The port will remain as long as there is a valid | |
2944 | * binding (e.g. until the user changes the binding type or unloads the | |
2945 | * scsi host with the binding). | |
1da177e4 | 2946 | * |
19a7b4ae JSEC |
2947 | * If the remote port returns within the dev_loss_tmo value (and matches |
2948 | * according to the target id binding type), the port structure will be | |
2949 | * reused. If it is no longer a SCSI target, the target will be torn | |
2950 | * down. If it continues to be a SCSI target, then the target will be | |
2951 | * unblocked (allowing i/o to be resumed), and a scan will be activated | |
2952 | * to ensure that all luns are detected. | |
2953 | * | |
2954 | * Called from normal process context only - cannot be called from interrupt. | |
1da177e4 LT |
2955 | * |
2956 | * Notes: | |
2957 | * This routine assumes no locks are held on entry. | |
eb44820c | 2958 | */ |
1da177e4 LT |
2959 | void |
2960 | fc_remote_port_delete(struct fc_rport *rport) | |
2961 | { | |
aedf3497 | 2962 | struct Scsi_Host *shost = rport_to_shost(rport); |
36dd288f | 2963 | unsigned long timeout = rport->dev_loss_tmo; |
aedf3497 JS |
2964 | unsigned long flags; |
2965 | ||
2966 | /* | |
2967 | * No need to flush the fc_host work_q's, as all adds are synchronous. | |
2968 | * | |
2969 | * We do need to reclaim the rport scan work element, so eventually | |
2970 | * (in fc_rport_final_delete()) we'll flush the scsi host work_q if | |
2971 | * there's still a scan pending. | |
2972 | */ | |
2973 | ||
2974 | spin_lock_irqsave(shost->host_lock, flags); | |
1da177e4 | 2975 | |
92740b24 | 2976 | if (rport->port_state != FC_PORTSTATE_ONLINE) { |
aedf3497 | 2977 | spin_unlock_irqrestore(shost->host_lock, flags); |
1da177e4 LT |
2978 | return; |
2979 | } | |
2980 | ||
92740b24 JS |
2981 | /* |
2982 | * In the past, we if this was not an FCP-Target, we would | |
2983 | * unconditionally just jump to deleting the rport. | |
2984 | * However, rports can be used as node containers by the LLDD, | |
2985 | * and its not appropriate to just terminate the rport at the | |
2986 | * first sign of a loss in connectivity. The LLDD may want to | |
2987 | * send ELS traffic to re-validate the login. If the rport is | |
2988 | * immediately deleted, it makes it inappropriate for a node | |
2989 | * container. | |
2990 | * So... we now unconditionally wait dev_loss_tmo before | |
2991 | * destroying an rport. | |
2992 | */ | |
2993 | ||
aedf3497 JS |
2994 | rport->port_state = FC_PORTSTATE_BLOCKED; |
2995 | ||
2996 | rport->flags |= FC_RPORT_DEVLOSS_PENDING; | |
2997 | ||
2998 | spin_unlock_irqrestore(shost->host_lock, flags); | |
2999 | ||
19a7b4ae | 3000 | scsi_target_block(&rport->dev); |
1da177e4 | 3001 | |
0f29b966 JS |
3002 | /* see if we need to kill io faster than waiting for device loss */ |
3003 | if ((rport->fast_io_fail_tmo != -1) && | |
fff9d40c | 3004 | (rport->fast_io_fail_tmo < timeout)) |
0f29b966 JS |
3005 | fc_queue_devloss_work(shost, &rport->fail_io_work, |
3006 | rport->fast_io_fail_tmo * HZ); | |
3007 | ||
19a7b4ae | 3008 | /* cap the length the devices can be blocked until they are deleted */ |
aedf3497 | 3009 | fc_queue_devloss_work(shost, &rport->dev_loss_work, timeout * HZ); |
1da177e4 LT |
3010 | } |
3011 | EXPORT_SYMBOL(fc_remote_port_delete); | |
3012 | ||
3013 | /** | |
eb44820c | 3014 | * fc_remote_port_rolechg - notifies the fc transport that the roles on a remote may have changed. |
1da177e4 | 3015 | * @rport: The remote port that changed. |
eb44820c | 3016 | * @roles: New roles for this port. |
1da177e4 | 3017 | * |
eb44820c RL |
3018 | * Description: The LLDD calls this routine to notify the transport that the |
3019 | * roles on a remote port may have changed. The largest effect of this is | |
1da177e4 LT |
3020 | * if a port now becomes a FCP Target, it must be allocated a |
3021 | * scsi target id. If the port is no longer a FCP target, any | |
3022 | * scsi target id value assigned to it will persist in case the | |
3023 | * role changes back to include FCP Target. No changes in the scsi | |
3024 | * midlayer will be invoked if the role changes (in the expectation | |
3025 | * that the role will be resumed. If it doesn't normal error processing | |
3026 | * will take place). | |
3027 | * | |
3028 | * Should not be called from interrupt context. | |
3029 | * | |
3030 | * Notes: | |
3031 | * This routine assumes no locks are held on entry. | |
eb44820c | 3032 | */ |
1da177e4 LT |
3033 | void |
3034 | fc_remote_port_rolechg(struct fc_rport *rport, u32 roles) | |
3035 | { | |
3036 | struct Scsi_Host *shost = rport_to_shost(rport); | |
aedf3497 | 3037 | struct fc_host_attrs *fc_host = shost_to_fc_host(shost); |
1da177e4 LT |
3038 | unsigned long flags; |
3039 | int create = 0; | |
3040 | ||
1da177e4 | 3041 | spin_lock_irqsave(shost->host_lock, flags); |
a53eb5e0 | 3042 | if (roles & FC_PORT_ROLE_FCP_TARGET) { |
19a7b4ae JSEC |
3043 | if (rport->scsi_target_id == -1) { |
3044 | rport->scsi_target_id = fc_host->next_target_id++; | |
3045 | create = 1; | |
a53eb5e0 | 3046 | } else if (!(rport->roles & FC_PORT_ROLE_FCP_TARGET)) |
19a7b4ae | 3047 | create = 1; |
1da177e4 | 3048 | } |
1da177e4 | 3049 | |
19a7b4ae JSEC |
3050 | rport->roles = roles; |
3051 | ||
aedf3497 JS |
3052 | spin_unlock_irqrestore(shost->host_lock, flags); |
3053 | ||
19a7b4ae JSEC |
3054 | if (create) { |
3055 | /* | |
3056 | * There may have been a delete timer running on the | |
3057 | * port. Ensure that it is cancelled as we now know | |
3058 | * the port is an FCP Target. | |
3059 | * Note: we know the rport is exists and in an online | |
3060 | * state as the LLDD would not have had an rport | |
3061 | * reference to pass us. | |
3062 | * | |
3063 | * Take no action on the del_timer failure as the state | |
3064 | * machine state change will validate the | |
3065 | * transaction. | |
3066 | */ | |
0f29b966 JS |
3067 | if (!cancel_delayed_work(&rport->fail_io_work)) |
3068 | fc_flush_devloss(shost); | |
19a7b4ae | 3069 | if (!cancel_delayed_work(&rport->dev_loss_work)) |
aedf3497 JS |
3070 | fc_flush_devloss(shost); |
3071 | ||
3072 | spin_lock_irqsave(shost->host_lock, flags); | |
fff9d40c | 3073 | rport->flags &= ~(FC_RPORT_FAST_FAIL_TIMEDOUT | |
0eecee41 JS |
3074 | FC_RPORT_DEVLOSS_PENDING | |
3075 | FC_RPORT_DEVLOSS_CALLBK_DONE); | |
aedf3497 JS |
3076 | spin_unlock_irqrestore(shost->host_lock, flags); |
3077 | ||
3078 | /* ensure any stgt delete functions are done */ | |
3079 | fc_flush_work(shost); | |
19a7b4ae | 3080 | |
5d9fb5cc | 3081 | scsi_target_unblock(&rport->dev, SDEV_RUNNING); |
1da177e4 | 3082 | /* initiate a scan of the target */ |
aedf3497 JS |
3083 | spin_lock_irqsave(shost->host_lock, flags); |
3084 | rport->flags |= FC_RPORT_SCAN_PENDING; | |
1da177e4 | 3085 | scsi_queue_work(shost, &rport->scan_work); |
aedf3497 | 3086 | spin_unlock_irqrestore(shost->host_lock, flags); |
19a7b4ae | 3087 | } |
1da177e4 LT |
3088 | } |
3089 | EXPORT_SYMBOL(fc_remote_port_rolechg); | |
3090 | ||
3091 | /** | |
eb44820c | 3092 | * fc_timeout_deleted_rport - Timeout handler for a deleted remote port. |
92740b24 | 3093 | * @work: rport target that failed to reappear in the allotted time. |
eb44820c RL |
3094 | * |
3095 | * Description: An attempt to delete a remote port blocks, and if it fails | |
3096 | * to return in the allotted time this gets called. | |
3097 | */ | |
1da177e4 | 3098 | static void |
c4028958 | 3099 | fc_timeout_deleted_rport(struct work_struct *work) |
1da177e4 | 3100 | { |
c4028958 DH |
3101 | struct fc_rport *rport = |
3102 | container_of(work, struct fc_rport, dev_loss_work.work); | |
19a7b4ae | 3103 | struct Scsi_Host *shost = rport_to_shost(rport); |
4be98c0c | 3104 | struct fc_internal *i = to_fc_internal(shost->transportt); |
aedf3497 | 3105 | struct fc_host_attrs *fc_host = shost_to_fc_host(shost); |
19a7b4ae | 3106 | unsigned long flags; |
8798a694 | 3107 | int do_callback = 0; |
1da177e4 | 3108 | |
19a7b4ae | 3109 | spin_lock_irqsave(shost->host_lock, flags); |
1da177e4 | 3110 | |
aedf3497 JS |
3111 | rport->flags &= ~FC_RPORT_DEVLOSS_PENDING; |
3112 | ||
1da177e4 | 3113 | /* |
92740b24 JS |
3114 | * If the port is ONLINE, then it came back. If it was a SCSI |
3115 | * target, validate it still is. If not, tear down the | |
3116 | * scsi_target on it. | |
1da177e4 | 3117 | */ |
aedf3497 | 3118 | if ((rport->port_state == FC_PORTSTATE_ONLINE) && |
92740b24 | 3119 | (rport->scsi_target_id != -1) && |
a53eb5e0 | 3120 | !(rport->roles & FC_PORT_ROLE_FCP_TARGET)) { |
19a7b4ae | 3121 | dev_printk(KERN_ERR, &rport->dev, |
aedf3497 JS |
3122 | "blocked FC remote port time out: no longer" |
3123 | " a FCP target, removing starget\n"); | |
aedf3497 | 3124 | spin_unlock_irqrestore(shost->host_lock, flags); |
5d9fb5cc | 3125 | scsi_target_unblock(&rport->dev, SDEV_TRANSPORT_OFFLINE); |
a0785edf | 3126 | fc_queue_work(shost, &rport->stgt_delete_work); |
19a7b4ae JSEC |
3127 | return; |
3128 | } | |
1da177e4 | 3129 | |
92740b24 | 3130 | /* NOOP state - we're flushing workq's */ |
19a7b4ae JSEC |
3131 | if (rport->port_state != FC_PORTSTATE_BLOCKED) { |
3132 | spin_unlock_irqrestore(shost->host_lock, flags); | |
3133 | dev_printk(KERN_ERR, &rport->dev, | |
92740b24 JS |
3134 | "blocked FC remote port time out: leaving" |
3135 | " rport%s alone\n", | |
3136 | (rport->scsi_target_id != -1) ? " and starget" : ""); | |
19a7b4ae JSEC |
3137 | return; |
3138 | } | |
1da177e4 | 3139 | |
92740b24 JS |
3140 | if ((fc_host->tgtid_bind_type == FC_TGTID_BIND_NONE) || |
3141 | (rport->scsi_target_id == -1)) { | |
aedf3497 JS |
3142 | list_del(&rport->peers); |
3143 | rport->port_state = FC_PORTSTATE_DELETED; | |
19a7b4ae | 3144 | dev_printk(KERN_ERR, &rport->dev, |
92740b24 JS |
3145 | "blocked FC remote port time out: removing" |
3146 | " rport%s\n", | |
3147 | (rport->scsi_target_id != -1) ? " and starget" : ""); | |
aedf3497 JS |
3148 | fc_queue_work(shost, &rport->rport_delete_work); |
3149 | spin_unlock_irqrestore(shost->host_lock, flags); | |
19a7b4ae JSEC |
3150 | return; |
3151 | } | |
1da177e4 | 3152 | |
19a7b4ae JSEC |
3153 | dev_printk(KERN_ERR, &rport->dev, |
3154 | "blocked FC remote port time out: removing target and " | |
3155 | "saving binding\n"); | |
3156 | ||
aedf3497 | 3157 | list_move_tail(&rport->peers, &fc_host->rport_bindings); |
1da177e4 LT |
3158 | |
3159 | /* | |
19a7b4ae JSEC |
3160 | * Note: We do not remove or clear the hostdata area. This allows |
3161 | * host-specific target data to persist along with the | |
3162 | * scsi_target_id. It's up to the host to manage it's hostdata area. | |
1da177e4 | 3163 | */ |
1da177e4 | 3164 | |
19a7b4ae JSEC |
3165 | /* |
3166 | * Reinitialize port attributes that may change if the port comes back. | |
3167 | */ | |
3168 | rport->maxframe_size = -1; | |
3169 | rport->supported_classes = FC_COS_UNSPECIFIED; | |
a53eb5e0 | 3170 | rport->roles = FC_PORT_ROLE_UNKNOWN; |
aedf3497 | 3171 | rport->port_state = FC_PORTSTATE_NOTPRESENT; |
fff9d40c | 3172 | rport->flags &= ~FC_RPORT_FAST_FAIL_TIMEDOUT; |
1da177e4 | 3173 | |
f78badb1 JS |
3174 | /* |
3175 | * Pre-emptively kill I/O rather than waiting for the work queue | |
3176 | * item to teardown the starget. (FCOE libFC folks prefer this | |
3177 | * and to have the rport_port_id still set when it's done). | |
3178 | */ | |
3179 | spin_unlock_irqrestore(shost->host_lock, flags); | |
3180 | fc_terminate_rport_io(rport); | |
3181 | ||
8798a694 MR |
3182 | spin_lock_irqsave(shost->host_lock, flags); |
3183 | ||
3184 | if (rport->port_state == FC_PORTSTATE_NOTPRESENT) { /* still missing */ | |
f78badb1 | 3185 | |
8798a694 MR |
3186 | /* remove the identifiers that aren't used in the consisting binding */ |
3187 | switch (fc_host->tgtid_bind_type) { | |
3188 | case FC_TGTID_BIND_BY_WWPN: | |
3189 | rport->node_name = -1; | |
3190 | rport->port_id = -1; | |
3191 | break; | |
3192 | case FC_TGTID_BIND_BY_WWNN: | |
3193 | rport->port_name = -1; | |
3194 | rport->port_id = -1; | |
3195 | break; | |
3196 | case FC_TGTID_BIND_BY_ID: | |
3197 | rport->node_name = -1; | |
3198 | rport->port_name = -1; | |
3199 | break; | |
3200 | case FC_TGTID_BIND_NONE: /* to keep compiler happy */ | |
3201 | break; | |
3202 | } | |
3203 | ||
3204 | /* | |
3205 | * As this only occurs if the remote port (scsi target) | |
3206 | * went away and didn't come back - we'll remove | |
3207 | * all attached scsi devices. | |
3208 | */ | |
3209 | rport->flags |= FC_RPORT_DEVLOSS_CALLBK_DONE; | |
3210 | fc_queue_work(shost, &rport->stgt_delete_work); | |
3211 | ||
3212 | do_callback = 1; | |
19a7b4ae JSEC |
3213 | } |
3214 | ||
8798a694 | 3215 | spin_unlock_irqrestore(shost->host_lock, flags); |
4be98c0c JS |
3216 | |
3217 | /* | |
3218 | * Notify the driver that the rport is now dead. The LLDD will | |
3219 | * also guarantee that any communication to the rport is terminated | |
3220 | * | |
3221 | * Note: we set the CALLBK_DONE flag above to correspond | |
3222 | */ | |
8798a694 | 3223 | if (do_callback && i->f->dev_loss_tmo_callbk) |
4be98c0c | 3224 | i->f->dev_loss_tmo_callbk(rport); |
1da177e4 | 3225 | } |
1da177e4 | 3226 | |
4be98c0c | 3227 | |
0f29b966 | 3228 | /** |
eb44820c | 3229 | * fc_timeout_fail_rport_io - Timeout handler for a fast io failing on a disconnected SCSI target. |
c4028958 | 3230 | * @work: rport to terminate io on. |
0f29b966 JS |
3231 | * |
3232 | * Notes: Only requests the failure of the io, not that all are flushed | |
3233 | * prior to returning. | |
eb44820c | 3234 | */ |
0f29b966 | 3235 | static void |
c4028958 | 3236 | fc_timeout_fail_rport_io(struct work_struct *work) |
0f29b966 | 3237 | { |
c4028958 DH |
3238 | struct fc_rport *rport = |
3239 | container_of(work, struct fc_rport, fail_io_work.work); | |
0f29b966 JS |
3240 | |
3241 | if (rport->port_state != FC_PORTSTATE_BLOCKED) | |
3242 | return; | |
3243 | ||
fff9d40c MC |
3244 | rport->flags |= FC_RPORT_FAST_FAIL_TIMEDOUT; |
3245 | fc_terminate_rport_io(rport); | |
0f29b966 JS |
3246 | } |
3247 | ||
1da177e4 LT |
3248 | /** |
3249 | * fc_scsi_scan_rport - called to perform a scsi scan on a remote port. | |
c4028958 | 3250 | * @work: remote port to be scanned. |
eb44820c | 3251 | */ |
1da177e4 | 3252 | static void |
c4028958 | 3253 | fc_scsi_scan_rport(struct work_struct *work) |
1da177e4 | 3254 | { |
c4028958 DH |
3255 | struct fc_rport *rport = |
3256 | container_of(work, struct fc_rport, scan_work); | |
aedf3497 | 3257 | struct Scsi_Host *shost = rport_to_shost(rport); |
03f002f7 | 3258 | struct fc_internal *i = to_fc_internal(shost->transportt); |
42e33148 JSEC |
3259 | unsigned long flags; |
3260 | ||
aedf3497 | 3261 | if ((rport->port_state == FC_PORTSTATE_ONLINE) && |
03f002f7 CS |
3262 | (rport->roles & FC_PORT_ROLE_FCP_TARGET) && |
3263 | !(i->f->disable_target_scan)) { | |
aedf3497 | 3264 | scsi_scan_target(&rport->dev, rport->channel, |
1d645088 HR |
3265 | rport->scsi_target_id, SCAN_WILD_CARD, |
3266 | SCSI_SCAN_RESCAN); | |
42e33148 | 3267 | } |
aedf3497 JS |
3268 | |
3269 | spin_lock_irqsave(shost->host_lock, flags); | |
3270 | rport->flags &= ~FC_RPORT_SCAN_PENDING; | |
42e33148 JSEC |
3271 | spin_unlock_irqrestore(shost->host_lock, flags); |
3272 | } | |
3273 | ||
65d430fa CS |
3274 | /** |
3275 | * fc_block_scsi_eh - Block SCSI eh thread for blocked fc_rport | |
3276 | * @cmnd: SCSI command that scsi_eh is trying to recover | |
3277 | * | |
3278 | * This routine can be called from a FC LLD scsi_eh callback. It | |
3279 | * blocks the scsi_eh thread until the fc_rport leaves the | |
2f2eb587 CS |
3280 | * FC_PORTSTATE_BLOCKED, or the fast_io_fail_tmo fires. This is |
3281 | * necessary to avoid the scsi_eh failing recovery actions for blocked | |
3282 | * rports which would lead to offlined SCSI devices. | |
3283 | * | |
3284 | * Returns: 0 if the fc_rport left the state FC_PORTSTATE_BLOCKED. | |
3285 | * FAST_IO_FAIL if the fast_io_fail_tmo fired, this should be | |
3286 | * passed back to scsi_eh. | |
65d430fa | 3287 | */ |
2f2eb587 | 3288 | int fc_block_scsi_eh(struct scsi_cmnd *cmnd) |
65d430fa CS |
3289 | { |
3290 | struct Scsi_Host *shost = cmnd->device->host; | |
3291 | struct fc_rport *rport = starget_to_rport(scsi_target(cmnd->device)); | |
3292 | unsigned long flags; | |
3293 | ||
3294 | spin_lock_irqsave(shost->host_lock, flags); | |
2f2eb587 CS |
3295 | while (rport->port_state == FC_PORTSTATE_BLOCKED && |
3296 | !(rport->flags & FC_RPORT_FAST_FAIL_TIMEDOUT)) { | |
65d430fa CS |
3297 | spin_unlock_irqrestore(shost->host_lock, flags); |
3298 | msleep(1000); | |
3299 | spin_lock_irqsave(shost->host_lock, flags); | |
3300 | } | |
3301 | spin_unlock_irqrestore(shost->host_lock, flags); | |
2f2eb587 CS |
3302 | |
3303 | if (rport->flags & FC_RPORT_FAST_FAIL_TIMEDOUT) | |
3304 | return FAST_IO_FAIL; | |
3305 | ||
3306 | return 0; | |
65d430fa CS |
3307 | } |
3308 | EXPORT_SYMBOL(fc_block_scsi_eh); | |
42e33148 | 3309 | |
a53eb5e0 | 3310 | /** |
a30c3f69 | 3311 | * fc_vport_setup - allocates and creates a FC virtual port. |
a53eb5e0 JS |
3312 | * @shost: scsi host the virtual port is connected to. |
3313 | * @channel: Channel on shost port connected to. | |
3314 | * @pdev: parent device for vport | |
3315 | * @ids: The world wide names, FC4 port roles, etc for | |
3316 | * the virtual port. | |
3317 | * @ret_vport: The pointer to the created vport. | |
3318 | * | |
3319 | * Allocates and creates the vport structure, calls the parent host | |
3320 | * to instantiate the vport, the completes w/ class and sysfs creation. | |
3321 | * | |
3322 | * Notes: | |
3323 | * This routine assumes no locks are held on entry. | |
eb44820c | 3324 | */ |
a53eb5e0 | 3325 | static int |
a30c3f69 | 3326 | fc_vport_setup(struct Scsi_Host *shost, int channel, struct device *pdev, |
a53eb5e0 JS |
3327 | struct fc_vport_identifiers *ids, struct fc_vport **ret_vport) |
3328 | { | |
3329 | struct fc_host_attrs *fc_host = shost_to_fc_host(shost); | |
3330 | struct fc_internal *fci = to_fc_internal(shost->transportt); | |
3331 | struct fc_vport *vport; | |
3332 | struct device *dev; | |
3333 | unsigned long flags; | |
3334 | size_t size; | |
3335 | int error; | |
3336 | ||
3337 | *ret_vport = NULL; | |
3338 | ||
3339 | if ( ! fci->f->vport_create) | |
3340 | return -ENOENT; | |
3341 | ||
3342 | size = (sizeof(struct fc_vport) + fci->f->dd_fcvport_size); | |
3343 | vport = kzalloc(size, GFP_KERNEL); | |
3344 | if (unlikely(!vport)) { | |
cadbd4a5 | 3345 | printk(KERN_ERR "%s: allocation failure\n", __func__); |
a53eb5e0 JS |
3346 | return -ENOMEM; |
3347 | } | |
3348 | ||
3349 | vport->vport_state = FC_VPORT_UNKNOWN; | |
3350 | vport->vport_last_state = FC_VPORT_UNKNOWN; | |
3351 | vport->node_name = ids->node_name; | |
3352 | vport->port_name = ids->port_name; | |
3353 | vport->roles = ids->roles; | |
3354 | vport->vport_type = ids->vport_type; | |
3355 | if (fci->f->dd_fcvport_size) | |
3356 | vport->dd_data = &vport[1]; | |
3357 | vport->shost = shost; | |
3358 | vport->channel = channel; | |
3359 | vport->flags = FC_VPORT_CREATING; | |
9ef3e4a4 | 3360 | INIT_WORK(&vport->vport_delete_work, fc_vport_sched_delete); |
a53eb5e0 JS |
3361 | |
3362 | spin_lock_irqsave(shost->host_lock, flags); | |
3363 | ||
3364 | if (fc_host->npiv_vports_inuse >= fc_host->max_npiv_vports) { | |
3365 | spin_unlock_irqrestore(shost->host_lock, flags); | |
3366 | kfree(vport); | |
3367 | return -ENOSPC; | |
3368 | } | |
3369 | fc_host->npiv_vports_inuse++; | |
3370 | vport->number = fc_host->next_vport_number++; | |
3371 | list_add_tail(&vport->peers, &fc_host->vports); | |
4cd38e38 | 3372 | scsi_host_get(shost); /* for fc_host->vport list */ |
a53eb5e0 JS |
3373 | |
3374 | spin_unlock_irqrestore(shost->host_lock, flags); | |
3375 | ||
3376 | dev = &vport->dev; | |
3377 | device_initialize(dev); /* takes self reference */ | |
3378 | dev->parent = get_device(pdev); /* takes parent reference */ | |
3379 | dev->release = fc_vport_dev_release; | |
71610f55 KS |
3380 | dev_set_name(dev, "vport-%d:%d-%d", |
3381 | shost->host_no, channel, vport->number); | |
a53eb5e0 JS |
3382 | transport_setup_device(dev); |
3383 | ||
3384 | error = device_add(dev); | |
3385 | if (error) { | |
3386 | printk(KERN_ERR "FC Virtual Port device_add failed\n"); | |
3387 | goto delete_vport; | |
3388 | } | |
3389 | transport_add_device(dev); | |
3390 | transport_configure_device(dev); | |
3391 | ||
3392 | error = fci->f->vport_create(vport, ids->disable); | |
3393 | if (error) { | |
3394 | printk(KERN_ERR "FC Virtual Port LLDD Create failed\n"); | |
3395 | goto delete_vport_all; | |
3396 | } | |
3397 | ||
3398 | /* | |
3399 | * if the parent isn't the physical adapter's Scsi_Host, ensure | |
3400 | * the Scsi_Host at least contains ia symlink to the vport. | |
3401 | */ | |
3402 | if (pdev != &shost->shost_gendev) { | |
3403 | error = sysfs_create_link(&shost->shost_gendev.kobj, | |
71610f55 | 3404 | &dev->kobj, dev_name(dev)); |
a53eb5e0 JS |
3405 | if (error) |
3406 | printk(KERN_ERR | |
3407 | "%s: Cannot create vport symlinks for " | |
3408 | "%s, err=%d\n", | |
71610f55 | 3409 | __func__, dev_name(dev), error); |
a53eb5e0 JS |
3410 | } |
3411 | spin_lock_irqsave(shost->host_lock, flags); | |
3412 | vport->flags &= ~FC_VPORT_CREATING; | |
3413 | spin_unlock_irqrestore(shost->host_lock, flags); | |
3414 | ||
3415 | dev_printk(KERN_NOTICE, pdev, | |
71610f55 | 3416 | "%s created via shost%d channel %d\n", dev_name(dev), |
a53eb5e0 JS |
3417 | shost->host_no, channel); |
3418 | ||
3419 | *ret_vport = vport; | |
3420 | ||
3421 | return 0; | |
3422 | ||
3423 | delete_vport_all: | |
3424 | transport_remove_device(dev); | |
3425 | device_del(dev); | |
3426 | delete_vport: | |
3427 | transport_destroy_device(dev); | |
3428 | spin_lock_irqsave(shost->host_lock, flags); | |
3429 | list_del(&vport->peers); | |
4cd38e38 | 3430 | scsi_host_put(shost); /* for fc_host->vport list */ |
a53eb5e0 JS |
3431 | fc_host->npiv_vports_inuse--; |
3432 | spin_unlock_irqrestore(shost->host_lock, flags); | |
3433 | put_device(dev->parent); | |
3434 | kfree(vport); | |
3435 | ||
3436 | return error; | |
3437 | } | |
3438 | ||
a30c3f69 AV |
3439 | /** |
3440 | * fc_vport_create - Admin App or LLDD requests creation of a vport | |
3441 | * @shost: scsi host the virtual port is connected to. | |
3442 | * @channel: channel on shost port connected to. | |
3443 | * @ids: The world wide names, FC4 port roles, etc for | |
3444 | * the virtual port. | |
3445 | * | |
3446 | * Notes: | |
3447 | * This routine assumes no locks are held on entry. | |
3448 | */ | |
3449 | struct fc_vport * | |
3450 | fc_vport_create(struct Scsi_Host *shost, int channel, | |
3451 | struct fc_vport_identifiers *ids) | |
3452 | { | |
3453 | int stat; | |
3454 | struct fc_vport *vport; | |
3455 | ||
3456 | stat = fc_vport_setup(shost, channel, &shost->shost_gendev, | |
3457 | ids, &vport); | |
3458 | return stat ? NULL : vport; | |
3459 | } | |
3460 | EXPORT_SYMBOL(fc_vport_create); | |
a53eb5e0 JS |
3461 | |
3462 | /** | |
3463 | * fc_vport_terminate - Admin App or LLDD requests termination of a vport | |
3464 | * @vport: fc_vport to be terminated | |
3465 | * | |
3466 | * Calls the LLDD vport_delete() function, then deallocates and removes | |
3467 | * the vport from the shost and object tree. | |
3468 | * | |
3469 | * Notes: | |
3470 | * This routine assumes no locks are held on entry. | |
eb44820c | 3471 | */ |
a53eb5e0 JS |
3472 | int |
3473 | fc_vport_terminate(struct fc_vport *vport) | |
3474 | { | |
3475 | struct Scsi_Host *shost = vport_to_shost(vport); | |
3476 | struct fc_host_attrs *fc_host = shost_to_fc_host(shost); | |
3477 | struct fc_internal *i = to_fc_internal(shost->transportt); | |
3478 | struct device *dev = &vport->dev; | |
3479 | unsigned long flags; | |
3480 | int stat; | |
3481 | ||
a53eb5e0 JS |
3482 | if (i->f->vport_delete) |
3483 | stat = i->f->vport_delete(vport); | |
3484 | else | |
3485 | stat = -ENOENT; | |
3486 | ||
3487 | spin_lock_irqsave(shost->host_lock, flags); | |
3488 | vport->flags &= ~FC_VPORT_DELETING; | |
3489 | if (!stat) { | |
3490 | vport->flags |= FC_VPORT_DELETED; | |
3491 | list_del(&vport->peers); | |
3492 | fc_host->npiv_vports_inuse--; | |
4cd38e38 | 3493 | scsi_host_put(shost); /* for fc_host->vport list */ |
a53eb5e0 JS |
3494 | } |
3495 | spin_unlock_irqrestore(shost->host_lock, flags); | |
3496 | ||
3497 | if (stat) | |
3498 | return stat; | |
3499 | ||
3500 | if (dev->parent != &shost->shost_gendev) | |
71610f55 | 3501 | sysfs_remove_link(&shost->shost_gendev.kobj, dev_name(dev)); |
a53eb5e0 JS |
3502 | transport_remove_device(dev); |
3503 | device_del(dev); | |
3504 | transport_destroy_device(dev); | |
3505 | ||
3506 | /* | |
3507 | * Removing our self-reference should mean our | |
3508 | * release function gets called, which will drop the remaining | |
3509 | * parent reference and free the data structure. | |
3510 | */ | |
3511 | put_device(dev); /* for self-reference */ | |
3512 | ||
3513 | return 0; /* SUCCESS */ | |
3514 | } | |
3515 | EXPORT_SYMBOL(fc_vport_terminate); | |
3516 | ||
9ef3e4a4 JS |
3517 | /** |
3518 | * fc_vport_sched_delete - workq-based delete request for a vport | |
9ef3e4a4 | 3519 | * @work: vport to be deleted. |
eb44820c | 3520 | */ |
9ef3e4a4 JS |
3521 | static void |
3522 | fc_vport_sched_delete(struct work_struct *work) | |
3523 | { | |
3524 | struct fc_vport *vport = | |
3525 | container_of(work, struct fc_vport, vport_delete_work); | |
3526 | int stat; | |
3527 | ||
3528 | stat = fc_vport_terminate(vport); | |
3529 | if (stat) | |
3530 | dev_printk(KERN_ERR, vport->dev.parent, | |
3531 | "%s: %s could not be deleted created via " | |
cadbd4a5 | 3532 | "shost%d channel %d - error %d\n", __func__, |
71610f55 | 3533 | dev_name(&vport->dev), vport->shost->host_no, |
9ef3e4a4 JS |
3534 | vport->channel, stat); |
3535 | } | |
3536 | ||
a53eb5e0 | 3537 | |
9e4f5e29 JS |
3538 | /* |
3539 | * BSG support | |
3540 | */ | |
3541 | ||
9e4f5e29 JS |
3542 | /** |
3543 | * fc_bsg_job_timeout - handler for when a bsg request timesout | |
3544 | * @req: request that timed out | |
3545 | */ | |
3546 | static enum blk_eh_timer_return | |
3547 | fc_bsg_job_timeout(struct request *req) | |
3548 | { | |
75cc8cfc | 3549 | struct bsg_job *job = (void *) req->special; |
cd21c605 | 3550 | struct Scsi_Host *shost = fc_bsg_to_shost(job); |
1d69b122 | 3551 | struct fc_rport *rport = fc_bsg_to_rport(job); |
9e4f5e29 | 3552 | struct fc_internal *i = to_fc_internal(shost->transportt); |
ad7660cc | 3553 | int err = 0, inflight = 0; |
9e4f5e29 | 3554 | |
1d69b122 | 3555 | if (rport && rport->port_state == FC_PORTSTATE_BLOCKED) |
9e4f5e29 JS |
3556 | return BLK_EH_RESET_TIMER; |
3557 | ||
fb6f7c8d | 3558 | inflight = bsg_job_get(job); |
9e4f5e29 | 3559 | |
ad7660cc | 3560 | if (inflight && i->f->bsg_timeout) { |
9e4f5e29 JS |
3561 | /* call LLDD to abort the i/o as it has timed out */ |
3562 | err = i->f->bsg_timeout(job); | |
b8f08645 | 3563 | if (err == -EAGAIN) { |
fb6f7c8d | 3564 | bsg_job_put(job); |
b8f08645 SS |
3565 | return BLK_EH_RESET_TIMER; |
3566 | } else if (err) | |
9e4f5e29 JS |
3567 | printk(KERN_ERR "ERROR: FC BSG request timeout - LLD " |
3568 | "abort failed with status %d\n", err); | |
3569 | } | |
3570 | ||
9e4f5e29 | 3571 | /* the blk_end_sync_io() doesn't check the error */ |
ad7660cc | 3572 | if (!inflight) |
47e7e89e GM |
3573 | return BLK_EH_NOT_HANDLED; |
3574 | else | |
3575 | return BLK_EH_HANDLED; | |
9e4f5e29 JS |
3576 | } |
3577 | ||
9e4f5e29 JS |
3578 | /** |
3579 | * fc_bsg_host_dispatch - process fc host bsg requests and dispatch to LLDD | |
3580 | * @shost: scsi host rport attached to | |
3581 | * @job: bsg job to be processed | |
3582 | */ | |
a0f4bd7f | 3583 | static int fc_bsg_host_dispatch(struct Scsi_Host *shost, struct bsg_job *job) |
9e4f5e29 JS |
3584 | { |
3585 | struct fc_internal *i = to_fc_internal(shost->transportt); | |
01e0e15c JT |
3586 | struct fc_bsg_request *bsg_request = job->request; |
3587 | struct fc_bsg_reply *bsg_reply = job->reply; | |
9e4f5e29 JS |
3588 | int cmdlen = sizeof(uint32_t); /* start with length of msgcode */ |
3589 | int ret; | |
3590 | ||
01e0e15c JT |
3591 | /* check if we really have all the request data needed */ |
3592 | if (job->request_len < cmdlen) { | |
3593 | ret = -ENOMSG; | |
3594 | goto fail_host_msg; | |
3595 | } | |
3596 | ||
9e4f5e29 | 3597 | /* Validate the host command */ |
01e0e15c | 3598 | switch (bsg_request->msgcode) { |
9e4f5e29 JS |
3599 | case FC_BSG_HST_ADD_RPORT: |
3600 | cmdlen += sizeof(struct fc_bsg_host_add_rport); | |
3601 | break; | |
3602 | ||
3603 | case FC_BSG_HST_DEL_RPORT: | |
3604 | cmdlen += sizeof(struct fc_bsg_host_del_rport); | |
3605 | break; | |
3606 | ||
3607 | case FC_BSG_HST_ELS_NOLOGIN: | |
3608 | cmdlen += sizeof(struct fc_bsg_host_els); | |
3609 | /* there better be a xmt and rcv payloads */ | |
3610 | if ((!job->request_payload.payload_len) || | |
3611 | (!job->reply_payload.payload_len)) { | |
3612 | ret = -EINVAL; | |
3613 | goto fail_host_msg; | |
3614 | } | |
3615 | break; | |
3616 | ||
3617 | case FC_BSG_HST_CT: | |
3618 | cmdlen += sizeof(struct fc_bsg_host_ct); | |
3619 | /* there better be xmt and rcv payloads */ | |
3620 | if ((!job->request_payload.payload_len) || | |
3621 | (!job->reply_payload.payload_len)) { | |
3622 | ret = -EINVAL; | |
3623 | goto fail_host_msg; | |
3624 | } | |
3625 | break; | |
3626 | ||
3627 | case FC_BSG_HST_VENDOR: | |
3628 | cmdlen += sizeof(struct fc_bsg_host_vendor); | |
3629 | if ((shost->hostt->vendor_id == 0L) || | |
01e0e15c | 3630 | (bsg_request->rqst_data.h_vendor.vendor_id != |
9e4f5e29 JS |
3631 | shost->hostt->vendor_id)) { |
3632 | ret = -ESRCH; | |
3633 | goto fail_host_msg; | |
3634 | } | |
3635 | break; | |
3636 | ||
3637 | default: | |
3638 | ret = -EBADR; | |
3639 | goto fail_host_msg; | |
3640 | } | |
3641 | ||
9e4f5e29 JS |
3642 | ret = i->f->bsg_request(job); |
3643 | if (!ret) | |
a0f4bd7f | 3644 | return 0; |
9e4f5e29 JS |
3645 | |
3646 | fail_host_msg: | |
3647 | /* return the errno failure code as the only status */ | |
3648 | BUG_ON(job->reply_len < sizeof(uint32_t)); | |
01e0e15c JT |
3649 | bsg_reply->reply_payload_rcv_len = 0; |
3650 | bsg_reply->result = ret; | |
9e4f5e29 | 3651 | job->reply_len = sizeof(uint32_t); |
06548160 | 3652 | bsg_job_done(job, bsg_reply->result, |
1abaede7 | 3653 | bsg_reply->reply_payload_rcv_len); |
a0f4bd7f | 3654 | return 0; |
9e4f5e29 JS |
3655 | } |
3656 | ||
3657 | ||
3658 | /* | |
3659 | * fc_bsg_goose_queue - restart rport queue in case it was stopped | |
3660 | * @rport: rport to be restarted | |
3661 | */ | |
3662 | static void | |
3663 | fc_bsg_goose_queue(struct fc_rport *rport) | |
3664 | { | |
378eeade BVA |
3665 | struct request_queue *q = rport->rqst_q; |
3666 | unsigned long flags; | |
3667 | ||
3668 | if (!q) | |
9e4f5e29 JS |
3669 | return; |
3670 | ||
378eeade BVA |
3671 | spin_lock_irqsave(q->queue_lock, flags); |
3672 | blk_run_queue_async(q); | |
3673 | spin_unlock_irqrestore(q->queue_lock, flags); | |
9e4f5e29 JS |
3674 | } |
3675 | ||
9e4f5e29 JS |
3676 | /** |
3677 | * fc_bsg_rport_dispatch - process rport bsg requests and dispatch to LLDD | |
3678 | * @shost: scsi host rport attached to | |
9e4f5e29 JS |
3679 | * @job: bsg job to be processed |
3680 | */ | |
a0f4bd7f | 3681 | static int fc_bsg_rport_dispatch(struct Scsi_Host *shost, struct bsg_job *job) |
9e4f5e29 JS |
3682 | { |
3683 | struct fc_internal *i = to_fc_internal(shost->transportt); | |
01e0e15c JT |
3684 | struct fc_bsg_request *bsg_request = job->request; |
3685 | struct fc_bsg_reply *bsg_reply = job->reply; | |
9e4f5e29 JS |
3686 | int cmdlen = sizeof(uint32_t); /* start with length of msgcode */ |
3687 | int ret; | |
3688 | ||
01e0e15c JT |
3689 | /* check if we really have all the request data needed */ |
3690 | if (job->request_len < cmdlen) { | |
3691 | ret = -ENOMSG; | |
3692 | goto fail_rport_msg; | |
3693 | } | |
3694 | ||
9e4f5e29 | 3695 | /* Validate the rport command */ |
01e0e15c | 3696 | switch (bsg_request->msgcode) { |
9e4f5e29 JS |
3697 | case FC_BSG_RPT_ELS: |
3698 | cmdlen += sizeof(struct fc_bsg_rport_els); | |
3699 | goto check_bidi; | |
3700 | ||
3701 | case FC_BSG_RPT_CT: | |
3702 | cmdlen += sizeof(struct fc_bsg_rport_ct); | |
3703 | check_bidi: | |
3704 | /* there better be xmt and rcv payloads */ | |
3705 | if ((!job->request_payload.payload_len) || | |
3706 | (!job->reply_payload.payload_len)) { | |
3707 | ret = -EINVAL; | |
3708 | goto fail_rport_msg; | |
3709 | } | |
3710 | break; | |
3711 | default: | |
3712 | ret = -EBADR; | |
3713 | goto fail_rport_msg; | |
3714 | } | |
3715 | ||
9e4f5e29 JS |
3716 | ret = i->f->bsg_request(job); |
3717 | if (!ret) | |
a0f4bd7f | 3718 | return 0; |
9e4f5e29 JS |
3719 | |
3720 | fail_rport_msg: | |
3721 | /* return the errno failure code as the only status */ | |
3722 | BUG_ON(job->reply_len < sizeof(uint32_t)); | |
01e0e15c JT |
3723 | bsg_reply->reply_payload_rcv_len = 0; |
3724 | bsg_reply->result = ret; | |
9e4f5e29 | 3725 | job->reply_len = sizeof(uint32_t); |
06548160 | 3726 | bsg_job_done(job, bsg_reply->result, |
1abaede7 | 3727 | bsg_reply->reply_payload_rcv_len); |
a0f4bd7f | 3728 | return 0; |
9e4f5e29 JS |
3729 | } |
3730 | ||
a0f4bd7f | 3731 | static int fc_bsg_dispatch(struct bsg_job *job) |
9e4f5e29 | 3732 | { |
a0f4bd7f | 3733 | struct Scsi_Host *shost = fc_bsg_to_shost(job); |
9e4f5e29 | 3734 | |
a0f4bd7f JT |
3735 | if (scsi_is_fc_rport(job->dev)) |
3736 | return fc_bsg_rport_dispatch(shost, job); | |
3737 | else | |
3738 | return fc_bsg_host_dispatch(shost, job); | |
9e4f5e29 JS |
3739 | } |
3740 | ||
9e4f5e29 JS |
3741 | /** |
3742 | * fc_bsg_hostadd - Create and add the bsg hooks so we can receive requests | |
3743 | * @shost: shost for fc_host | |
3744 | * @fc_host: fc_host adding the structures to | |
3745 | */ | |
3746 | static int | |
3747 | fc_bsg_hostadd(struct Scsi_Host *shost, struct fc_host_attrs *fc_host) | |
3748 | { | |
3749 | struct device *dev = &shost->shost_gendev; | |
3750 | struct fc_internal *i = to_fc_internal(shost->transportt); | |
3751 | struct request_queue *q; | |
3c559ea8 | 3752 | char bsg_name[20]; |
9e4f5e29 JS |
3753 | |
3754 | fc_host->rqst_q = NULL; | |
3755 | ||
3756 | if (!i->f->bsg_request) | |
3757 | return -ENOTSUPP; | |
3758 | ||
3759 | snprintf(bsg_name, sizeof(bsg_name), | |
3760 | "fc_host%d", shost->host_no); | |
3761 | ||
8ae94eb6 CH |
3762 | q = bsg_setup_queue(dev, bsg_name, fc_bsg_dispatch, i->f->dd_bsg_size); |
3763 | if (IS_ERR(q)) { | |
a0f4bd7f JT |
3764 | dev_err(dev, |
3765 | "fc_host%d: bsg interface failed to initialize - setup queue\n", | |
3766 | shost->host_no); | |
8ae94eb6 | 3767 | return PTR_ERR(q); |
9e4f5e29 | 3768 | } |
8ae94eb6 | 3769 | __scsi_init_queue(shost, q); |
a0f4bd7f JT |
3770 | blk_queue_rq_timed_out(q, fc_bsg_job_timeout); |
3771 | blk_queue_rq_timeout(q, FC_DEFAULT_BSG_TIMEOUT); | |
9e4f5e29 JS |
3772 | fc_host->rqst_q = q; |
3773 | return 0; | |
3774 | } | |
3775 | ||
a0f4bd7f JT |
3776 | static int fc_bsg_rport_prep(struct request_queue *q, struct request *req) |
3777 | { | |
3778 | struct fc_rport *rport = dev_to_rport(q->queuedata); | |
3779 | ||
3780 | if (rport->port_state == FC_PORTSTATE_BLOCKED && | |
3781 | !(rport->flags & FC_RPORT_FAST_FAIL_TIMEDOUT)) | |
3782 | return BLKPREP_DEFER; | |
3783 | ||
3784 | if (rport->port_state != FC_PORTSTATE_ONLINE) | |
3785 | return BLKPREP_KILL; | |
3786 | ||
3787 | return BLKPREP_OK; | |
3788 | } | |
9e4f5e29 JS |
3789 | |
3790 | /** | |
3791 | * fc_bsg_rportadd - Create and add the bsg hooks so we can receive requests | |
3792 | * @shost: shost that rport is attached to | |
3793 | * @rport: rport that the bsg hooks are being attached to | |
3794 | */ | |
3795 | static int | |
3796 | fc_bsg_rportadd(struct Scsi_Host *shost, struct fc_rport *rport) | |
3797 | { | |
3798 | struct device *dev = &rport->dev; | |
3799 | struct fc_internal *i = to_fc_internal(shost->transportt); | |
3800 | struct request_queue *q; | |
9e4f5e29 JS |
3801 | |
3802 | rport->rqst_q = NULL; | |
3803 | ||
3804 | if (!i->f->bsg_request) | |
3805 | return -ENOTSUPP; | |
3806 | ||
8ae94eb6 CH |
3807 | q = bsg_setup_queue(dev, NULL, fc_bsg_dispatch, i->f->dd_bsg_size); |
3808 | if (IS_ERR(q)) { | |
a0f4bd7f | 3809 | dev_err(dev, "failed to setup bsg queue\n"); |
8ae94eb6 | 3810 | return PTR_ERR(q); |
9e4f5e29 | 3811 | } |
8ae94eb6 | 3812 | __scsi_init_queue(shost, q); |
a0f4bd7f JT |
3813 | blk_queue_prep_rq(q, fc_bsg_rport_prep); |
3814 | blk_queue_rq_timed_out(q, fc_bsg_job_timeout); | |
3815 | blk_queue_rq_timeout(q, BLK_DEFAULT_SG_TIMEOUT); | |
9e4f5e29 JS |
3816 | rport->rqst_q = q; |
3817 | return 0; | |
3818 | } | |
3819 | ||
3820 | ||
3821 | /** | |
3822 | * fc_bsg_remove - Deletes the bsg hooks on fchosts/rports | |
3823 | * @q: the request_queue that is to be torn down. | |
78d16341 JS |
3824 | * |
3825 | * Notes: | |
3826 | * Before unregistering the queue empty any requests that are blocked | |
3827 | * | |
3828 | * | |
9e4f5e29 JS |
3829 | */ |
3830 | static void | |
3831 | fc_bsg_remove(struct request_queue *q) | |
3832 | { | |
3833 | if (q) { | |
3834 | bsg_unregister_queue(q); | |
3835 | blk_cleanup_queue(q); | |
3836 | } | |
3837 | } | |
3838 | ||
3839 | ||
9ef3e4a4 JS |
3840 | /* Original Author: Martin Hicks */ |
3841 | MODULE_AUTHOR("James Smart"); | |
1da177e4 LT |
3842 | MODULE_DESCRIPTION("FC Transport Attributes"); |
3843 | MODULE_LICENSE("GPL"); | |
3844 | ||
3845 | module_init(fc_transport_init); | |
3846 | module_exit(fc_transport_exit); |