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" }, | |
c39e0af6 | 150 | { FCH_EVT_LINK_FPIN, "link_FPIN" }, |
84314fd4 JS |
151 | { FCH_EVT_VENDOR_UNIQUE, "vendor_unique" }, |
152 | }; | |
153 | fc_enum_name_search(host_event_code, fc_host_event_code, | |
154 | fc_host_event_code_names) | |
155 | #define FC_HOST_EVENT_CODE_MAX_NAMELEN 30 | |
156 | ||
157 | ||
1da177e4 LT |
158 | /* Convert fc_port_state values to ascii string name */ |
159 | static struct { | |
160 | enum fc_port_state value; | |
161 | char *name; | |
162 | } fc_port_state_names[] = { | |
163 | { FC_PORTSTATE_UNKNOWN, "Unknown" }, | |
164 | { FC_PORTSTATE_NOTPRESENT, "Not Present" }, | |
165 | { FC_PORTSTATE_ONLINE, "Online" }, | |
166 | { FC_PORTSTATE_OFFLINE, "Offline" }, | |
167 | { FC_PORTSTATE_BLOCKED, "Blocked" }, | |
168 | { FC_PORTSTATE_BYPASSED, "Bypassed" }, | |
169 | { FC_PORTSTATE_DIAGNOSTICS, "Diagnostics" }, | |
170 | { FC_PORTSTATE_LINKDOWN, "Linkdown" }, | |
171 | { FC_PORTSTATE_ERROR, "Error" }, | |
172 | { FC_PORTSTATE_LOOPBACK, "Loopback" }, | |
42e33148 | 173 | { FC_PORTSTATE_DELETED, "Deleted" }, |
1da177e4 LT |
174 | }; |
175 | fc_enum_name_search(port_state, fc_port_state, fc_port_state_names) | |
176 | #define FC_PORTSTATE_MAX_NAMELEN 20 | |
177 | ||
178 | ||
a53eb5e0 JS |
179 | /* Convert fc_vport_state values to ascii string name */ |
180 | static struct { | |
181 | enum fc_vport_state value; | |
182 | char *name; | |
183 | } fc_vport_state_names[] = { | |
184 | { FC_VPORT_UNKNOWN, "Unknown" }, | |
185 | { FC_VPORT_ACTIVE, "Active" }, | |
186 | { FC_VPORT_DISABLED, "Disabled" }, | |
187 | { FC_VPORT_LINKDOWN, "Linkdown" }, | |
188 | { FC_VPORT_INITIALIZING, "Initializing" }, | |
189 | { FC_VPORT_NO_FABRIC_SUPP, "No Fabric Support" }, | |
190 | { FC_VPORT_NO_FABRIC_RSCS, "No Fabric Resources" }, | |
191 | { FC_VPORT_FABRIC_LOGOUT, "Fabric Logout" }, | |
192 | { FC_VPORT_FABRIC_REJ_WWN, "Fabric Rejected WWN" }, | |
193 | { FC_VPORT_FAILED, "VPort Failed" }, | |
194 | }; | |
195 | fc_enum_name_search(vport_state, fc_vport_state, fc_vport_state_names) | |
196 | #define FC_VPORTSTATE_MAX_NAMELEN 24 | |
197 | ||
198 | /* Reuse fc_vport_state enum function for vport_last_state */ | |
199 | #define get_fc_vport_last_state_name get_fc_vport_state_name | |
200 | ||
201 | ||
1da177e4 | 202 | /* Convert fc_tgtid_binding_type values to ascii string name */ |
0ad78200 | 203 | static const struct { |
1da177e4 LT |
204 | enum fc_tgtid_binding_type value; |
205 | char *name; | |
206 | int matchlen; | |
207 | } fc_tgtid_binding_type_names[] = { | |
208 | { FC_TGTID_BIND_NONE, "none", 4 }, | |
209 | { FC_TGTID_BIND_BY_WWPN, "wwpn (World Wide Port Name)", 4 }, | |
210 | { FC_TGTID_BIND_BY_WWNN, "wwnn (World Wide Node Name)", 4 }, | |
211 | { FC_TGTID_BIND_BY_ID, "port_id (FC Address)", 7 }, | |
212 | }; | |
213 | fc_enum_name_search(tgtid_bind_type, fc_tgtid_binding_type, | |
214 | fc_tgtid_binding_type_names) | |
215 | fc_enum_name_match(tgtid_bind_type, fc_tgtid_binding_type, | |
216 | fc_tgtid_binding_type_names) | |
217 | #define FC_BINDTYPE_MAX_NAMELEN 30 | |
218 | ||
219 | ||
220 | #define fc_bitfield_name_search(title, table) \ | |
221 | static ssize_t \ | |
222 | get_fc_##title##_names(u32 table_key, char *buf) \ | |
223 | { \ | |
224 | char *prefix = ""; \ | |
225 | ssize_t len = 0; \ | |
226 | int i; \ | |
227 | \ | |
6391a113 | 228 | for (i = 0; i < ARRAY_SIZE(table); i++) { \ |
1da177e4 LT |
229 | if (table[i].value & table_key) { \ |
230 | len += sprintf(buf + len, "%s%s", \ | |
231 | prefix, table[i].name); \ | |
232 | prefix = ", "; \ | |
233 | } \ | |
234 | } \ | |
235 | len += sprintf(buf + len, "\n"); \ | |
236 | return len; \ | |
237 | } | |
238 | ||
239 | ||
240 | /* Convert FC_COS bit values to ascii string name */ | |
0ad78200 | 241 | static const struct { |
1da177e4 LT |
242 | u32 value; |
243 | char *name; | |
244 | } fc_cos_names[] = { | |
245 | { FC_COS_CLASS1, "Class 1" }, | |
246 | { FC_COS_CLASS2, "Class 2" }, | |
247 | { FC_COS_CLASS3, "Class 3" }, | |
248 | { FC_COS_CLASS4, "Class 4" }, | |
249 | { FC_COS_CLASS6, "Class 6" }, | |
250 | }; | |
251 | fc_bitfield_name_search(cos, fc_cos_names) | |
252 | ||
253 | ||
254 | /* Convert FC_PORTSPEED bit values to ascii string name */ | |
0ad78200 | 255 | static const struct { |
1da177e4 LT |
256 | u32 value; |
257 | char *name; | |
258 | } fc_port_speed_names[] = { | |
259 | { FC_PORTSPEED_1GBIT, "1 Gbit" }, | |
260 | { FC_PORTSPEED_2GBIT, "2 Gbit" }, | |
261 | { FC_PORTSPEED_4GBIT, "4 Gbit" }, | |
262 | { FC_PORTSPEED_10GBIT, "10 Gbit" }, | |
c3d2350a JS |
263 | { FC_PORTSPEED_8GBIT, "8 Gbit" }, |
264 | { FC_PORTSPEED_16GBIT, "16 Gbit" }, | |
624f28be | 265 | { FC_PORTSPEED_32GBIT, "32 Gbit" }, |
c21a2c1a DK |
266 | { FC_PORTSPEED_20GBIT, "20 Gbit" }, |
267 | { FC_PORTSPEED_40GBIT, "40 Gbit" }, | |
268 | { FC_PORTSPEED_50GBIT, "50 Gbit" }, | |
269 | { FC_PORTSPEED_100GBIT, "100 Gbit" }, | |
c749e6bc | 270 | { FC_PORTSPEED_25GBIT, "25 Gbit" }, |
cc019a5a JS |
271 | { FC_PORTSPEED_64GBIT, "64 Gbit" }, |
272 | { FC_PORTSPEED_128GBIT, "128 Gbit" }, | |
1da177e4 LT |
273 | { FC_PORTSPEED_NOT_NEGOTIATED, "Not Negotiated" }, |
274 | }; | |
275 | fc_bitfield_name_search(port_speed, fc_port_speed_names) | |
276 | ||
277 | ||
278 | static int | |
279 | show_fc_fc4s (char *buf, u8 *fc4_list) | |
280 | { | |
281 | int i, len=0; | |
282 | ||
283 | for (i = 0; i < FC_FC4_LIST_SIZE; i++, fc4_list++) | |
284 | len += sprintf(buf + len , "0x%02x ", *fc4_list); | |
285 | len += sprintf(buf + len, "\n"); | |
286 | return len; | |
287 | } | |
288 | ||
289 | ||
a53eb5e0 | 290 | /* Convert FC_PORT_ROLE bit values to ascii string name */ |
0ad78200 | 291 | static const struct { |
1da177e4 LT |
292 | u32 value; |
293 | char *name; | |
a53eb5e0 | 294 | } fc_port_role_names[] = { |
0c3ae266 CA |
295 | { FC_PORT_ROLE_FCP_TARGET, "FCP Target" }, |
296 | { FC_PORT_ROLE_FCP_INITIATOR, "FCP Initiator" }, | |
297 | { FC_PORT_ROLE_IP_PORT, "IP Port" }, | |
298 | { FC_PORT_ROLE_FCP_DUMMY_INITIATOR, "FCP Dummy Initiator" }, | |
a6a6d058 HR |
299 | { FC_PORT_ROLE_NVME_INITIATOR, "NVMe Initiator" }, |
300 | { FC_PORT_ROLE_NVME_TARGET, "NVMe Target" }, | |
301 | { FC_PORT_ROLE_NVME_DISCOVERY, "NVMe Discovery" }, | |
1da177e4 | 302 | }; |
a53eb5e0 | 303 | fc_bitfield_name_search(port_roles, fc_port_role_names) |
1da177e4 LT |
304 | |
305 | /* | |
306 | * Define roles that are specific to port_id. Values are relative to ROLE_MASK. | |
307 | */ | |
308 | #define FC_WELLKNOWN_PORTID_MASK 0xfffff0 | |
309 | #define FC_WELLKNOWN_ROLE_MASK 0x00000f | |
310 | #define FC_FPORT_PORTID 0x00000e | |
311 | #define FC_FABCTLR_PORTID 0x00000d | |
312 | #define FC_DIRSRVR_PORTID 0x00000c | |
313 | #define FC_TIMESRVR_PORTID 0x00000b | |
314 | #define FC_MGMTSRVR_PORTID 0x00000a | |
315 | ||
316 | ||
c4028958 DH |
317 | static void fc_timeout_deleted_rport(struct work_struct *work); |
318 | static void fc_timeout_fail_rport_io(struct work_struct *work); | |
319 | static void fc_scsi_scan_rport(struct work_struct *work); | |
1da177e4 LT |
320 | |
321 | /* | |
322 | * Attribute counts pre object type... | |
323 | * Increase these values if you add attributes | |
324 | */ | |
325 | #define FC_STARGET_NUM_ATTRS 3 | |
0f29b966 | 326 | #define FC_RPORT_NUM_ATTRS 10 |
a53eb5e0 | 327 | #define FC_VPORT_NUM_ATTRS 9 |
bb8ef587 | 328 | #define FC_HOST_NUM_ATTRS 29 |
1da177e4 LT |
329 | |
330 | struct fc_internal { | |
331 | struct scsi_transport_template t; | |
332 | struct fc_function_template *f; | |
333 | ||
334 | /* | |
335 | * For attributes : each object has : | |
336 | * An array of the actual attributes structures | |
337 | * An array of null-terminated pointers to the attribute | |
338 | * structures - used for mid-layer interaction. | |
339 | * | |
340 | * The attribute containers for the starget and host are are | |
341 | * part of the midlayer. As the remote port is specific to the | |
342 | * fc transport, we must provide the attribute container. | |
343 | */ | |
ee959b00 | 344 | struct device_attribute private_starget_attrs[ |
1da177e4 | 345 | FC_STARGET_NUM_ATTRS]; |
ee959b00 | 346 | struct device_attribute *starget_attrs[FC_STARGET_NUM_ATTRS + 1]; |
1da177e4 | 347 | |
ee959b00 TJ |
348 | struct device_attribute private_host_attrs[FC_HOST_NUM_ATTRS]; |
349 | struct device_attribute *host_attrs[FC_HOST_NUM_ATTRS + 1]; | |
1da177e4 LT |
350 | |
351 | struct transport_container rport_attr_cont; | |
ee959b00 TJ |
352 | struct device_attribute private_rport_attrs[FC_RPORT_NUM_ATTRS]; |
353 | struct device_attribute *rport_attrs[FC_RPORT_NUM_ATTRS + 1]; | |
a53eb5e0 JS |
354 | |
355 | struct transport_container vport_attr_cont; | |
ee959b00 TJ |
356 | struct device_attribute private_vport_attrs[FC_VPORT_NUM_ATTRS]; |
357 | struct device_attribute *vport_attrs[FC_VPORT_NUM_ATTRS + 1]; | |
1da177e4 LT |
358 | }; |
359 | ||
360 | #define to_fc_internal(tmpl) container_of(tmpl, struct fc_internal, t) | |
361 | ||
d0a7e574 | 362 | static int fc_target_setup(struct transport_container *tc, struct device *dev, |
ee959b00 | 363 | struct device *cdev) |
1da177e4 LT |
364 | { |
365 | struct scsi_target *starget = to_scsi_target(dev); | |
366 | struct fc_rport *rport = starget_to_rport(starget); | |
367 | ||
368 | /* | |
369 | * if parent is remote port, use values from remote port. | |
370 | * Otherwise, this host uses the fc_transport, but not the | |
371 | * remote port interface. As such, initialize to known non-values. | |
372 | */ | |
373 | if (rport) { | |
374 | fc_starget_node_name(starget) = rport->node_name; | |
375 | fc_starget_port_name(starget) = rport->port_name; | |
376 | fc_starget_port_id(starget) = rport->port_id; | |
377 | } else { | |
378 | fc_starget_node_name(starget) = -1; | |
379 | fc_starget_port_name(starget) = -1; | |
380 | fc_starget_port_id(starget) = -1; | |
381 | } | |
382 | ||
383 | return 0; | |
384 | } | |
385 | ||
386 | static DECLARE_TRANSPORT_CLASS(fc_transport_class, | |
387 | "fc_transport", | |
388 | fc_target_setup, | |
389 | NULL, | |
390 | NULL); | |
391 | ||
d0a7e574 | 392 | static int fc_host_setup(struct transport_container *tc, struct device *dev, |
ee959b00 | 393 | struct device *cdev) |
1da177e4 LT |
394 | { |
395 | struct Scsi_Host *shost = dev_to_shost(dev); | |
aedf3497 | 396 | struct fc_host_attrs *fc_host = shost_to_fc_host(shost); |
1da177e4 | 397 | |
9ef3e4a4 | 398 | /* |
1da177e4 LT |
399 | * Set default values easily detected by the midlayer as |
400 | * failure cases. The scsi lldd is responsible for initializing | |
401 | * all transport attributes to valid values per host. | |
402 | */ | |
aedf3497 JS |
403 | fc_host->node_name = -1; |
404 | fc_host->port_name = -1; | |
405 | fc_host->permanent_port_name = -1; | |
406 | fc_host->supported_classes = FC_COS_UNSPECIFIED; | |
407 | memset(fc_host->supported_fc4s, 0, | |
408 | sizeof(fc_host->supported_fc4s)); | |
aedf3497 JS |
409 | fc_host->supported_speeds = FC_PORTSPEED_UNKNOWN; |
410 | fc_host->maxframe_size = -1; | |
a53eb5e0 | 411 | fc_host->max_npiv_vports = 0; |
aedf3497 JS |
412 | memset(fc_host->serial_number, 0, |
413 | sizeof(fc_host->serial_number)); | |
bb8ef587 NP |
414 | memset(fc_host->manufacturer, 0, |
415 | sizeof(fc_host->manufacturer)); | |
416 | memset(fc_host->model, 0, | |
417 | sizeof(fc_host->model)); | |
418 | memset(fc_host->model_description, 0, | |
419 | sizeof(fc_host->model_description)); | |
420 | memset(fc_host->hardware_version, 0, | |
421 | sizeof(fc_host->hardware_version)); | |
422 | memset(fc_host->driver_version, 0, | |
423 | sizeof(fc_host->driver_version)); | |
424 | memset(fc_host->firmware_version, 0, | |
425 | sizeof(fc_host->firmware_version)); | |
426 | memset(fc_host->optionrom_version, 0, | |
427 | sizeof(fc_host->optionrom_version)); | |
aedf3497 JS |
428 | |
429 | fc_host->port_id = -1; | |
430 | fc_host->port_type = FC_PORTTYPE_UNKNOWN; | |
431 | fc_host->port_state = FC_PORTSTATE_UNKNOWN; | |
432 | memset(fc_host->active_fc4s, 0, | |
433 | sizeof(fc_host->active_fc4s)); | |
434 | fc_host->speed = FC_PORTSPEED_UNKNOWN; | |
435 | fc_host->fabric_name = -1; | |
b8d08210 JS |
436 | memset(fc_host->symbolic_name, 0, sizeof(fc_host->symbolic_name)); |
437 | memset(fc_host->system_hostname, 0, sizeof(fc_host->system_hostname)); | |
aedf3497 JS |
438 | |
439 | fc_host->tgtid_bind_type = FC_TGTID_BIND_BY_WWPN; | |
440 | ||
441 | INIT_LIST_HEAD(&fc_host->rports); | |
442 | INIT_LIST_HEAD(&fc_host->rport_bindings); | |
a53eb5e0 | 443 | INIT_LIST_HEAD(&fc_host->vports); |
aedf3497 JS |
444 | fc_host->next_rport_number = 0; |
445 | fc_host->next_target_id = 0; | |
a53eb5e0 JS |
446 | fc_host->next_vport_number = 0; |
447 | fc_host->npiv_vports_inuse = 0; | |
aedf3497 | 448 | |
aab0de24 KS |
449 | snprintf(fc_host->work_q_name, sizeof(fc_host->work_q_name), |
450 | "fc_wq_%d", shost->host_no); | |
d8537548 | 451 | fc_host->work_q = alloc_workqueue("%s", 0, 0, fc_host->work_q_name); |
aedf3497 JS |
452 | if (!fc_host->work_q) |
453 | return -ENOMEM; | |
454 | ||
43ca910a | 455 | fc_host->dev_loss_tmo = fc_dev_loss_tmo; |
aab0de24 KS |
456 | snprintf(fc_host->devloss_work_q_name, |
457 | sizeof(fc_host->devloss_work_q_name), | |
458 | "fc_dl_%d", shost->host_no); | |
d8537548 KC |
459 | fc_host->devloss_work_q = alloc_workqueue("%s", 0, 0, |
460 | fc_host->devloss_work_q_name); | |
aedf3497 JS |
461 | if (!fc_host->devloss_work_q) { |
462 | destroy_workqueue(fc_host->work_q); | |
463 | fc_host->work_q = NULL; | |
464 | return -ENOMEM; | |
465 | } | |
466 | ||
9e4f5e29 JS |
467 | fc_bsg_hostadd(shost, fc_host); |
468 | /* ignore any bsg add error - we just can't do sgio */ | |
469 | ||
470 | return 0; | |
471 | } | |
472 | ||
473 | static int fc_host_remove(struct transport_container *tc, struct device *dev, | |
474 | struct device *cdev) | |
475 | { | |
476 | struct Scsi_Host *shost = dev_to_shost(dev); | |
477 | struct fc_host_attrs *fc_host = shost_to_fc_host(shost); | |
478 | ||
479 | fc_bsg_remove(fc_host->rqst_q); | |
1da177e4 LT |
480 | return 0; |
481 | } | |
482 | ||
483 | static DECLARE_TRANSPORT_CLASS(fc_host_class, | |
484 | "fc_host", | |
485 | fc_host_setup, | |
9e4f5e29 | 486 | fc_host_remove, |
1da177e4 LT |
487 | NULL); |
488 | ||
489 | /* | |
490 | * Setup and Remove actions for remote ports are handled | |
491 | * in the service functions below. | |
492 | */ | |
493 | static DECLARE_TRANSPORT_CLASS(fc_rport_class, | |
494 | "fc_remote_ports", | |
495 | NULL, | |
496 | NULL, | |
497 | NULL); | |
498 | ||
a53eb5e0 JS |
499 | /* |
500 | * Setup and Remove actions for virtual ports are handled | |
501 | * in the service functions below. | |
502 | */ | |
503 | static DECLARE_TRANSPORT_CLASS(fc_vport_class, | |
504 | "fc_vports", | |
505 | NULL, | |
506 | NULL, | |
507 | NULL); | |
508 | ||
eb44820c | 509 | /* |
84314fd4 | 510 | * Netlink Infrastructure |
eb44820c | 511 | */ |
84314fd4 JS |
512 | |
513 | static atomic_t fc_event_seq; | |
514 | ||
515 | /** | |
516 | * fc_get_event_number - Obtain the next sequential FC event number | |
517 | * | |
518 | * Notes: | |
eb44820c | 519 | * We could have inlined this, but it would have required fc_event_seq to |
84314fd4 JS |
520 | * be exposed. For now, live with the subroutine call. |
521 | * Atomic used to avoid lock/unlock... | |
eb44820c | 522 | */ |
84314fd4 JS |
523 | u32 |
524 | fc_get_event_number(void) | |
525 | { | |
526 | return atomic_add_return(1, &fc_event_seq); | |
527 | } | |
528 | EXPORT_SYMBOL(fc_get_event_number); | |
529 | ||
84314fd4 | 530 | /** |
2b1be558 JS |
531 | * fc_host_post_fc_event - routine to do the work of posting an event |
532 | * on an fc_host. | |
84314fd4 JS |
533 | * @shost: host the event occurred on |
534 | * @event_number: fc event number obtained from get_fc_event_number() | |
535 | * @event_code: fc_host event being posted | |
2b1be558 JS |
536 | * @data_len: amount, in bytes, of event data |
537 | * @data_buf: pointer to event data | |
538 | * @vendor_id: value for Vendor id | |
84314fd4 JS |
539 | * |
540 | * Notes: | |
541 | * This routine assumes no locks are held on entry. | |
eb44820c | 542 | */ |
84314fd4 | 543 | void |
2b1be558 JS |
544 | fc_host_post_fc_event(struct Scsi_Host *shost, u32 event_number, |
545 | enum fc_host_event_code event_code, | |
546 | u32 data_len, char *data_buf, u64 vendor_id) | |
84314fd4 JS |
547 | { |
548 | struct sk_buff *skb; | |
549 | struct nlmsghdr *nlh; | |
550 | struct fc_nl_event *event; | |
551 | const char *name; | |
e07ebea0 | 552 | u32 len; |
84314fd4 JS |
553 | int err; |
554 | ||
2b1be558 JS |
555 | if (!data_buf || data_len < 4) |
556 | data_len = 0; | |
557 | ||
84314fd4 JS |
558 | if (!scsi_nl_sock) { |
559 | err = -ENOENT; | |
560 | goto send_fail; | |
561 | } | |
562 | ||
2b1be558 | 563 | len = FC_NL_MSGALIGN(sizeof(*event) + data_len); |
84314fd4 | 564 | |
e07ebea0 | 565 | skb = nlmsg_new(len, GFP_KERNEL); |
84314fd4 JS |
566 | if (!skb) { |
567 | err = -ENOBUFS; | |
568 | goto send_fail; | |
569 | } | |
570 | ||
e07ebea0 | 571 | nlh = nlmsg_put(skb, 0, 0, SCSI_TRANSPORT_MSG, len, 0); |
84314fd4 JS |
572 | if (!nlh) { |
573 | err = -ENOBUFS; | |
574 | goto send_fail_skb; | |
575 | } | |
e07ebea0 | 576 | event = nlmsg_data(nlh); |
84314fd4 JS |
577 | |
578 | INIT_SCSI_NL_HDR(&event->snlh, SCSI_NL_TRANSPORT_FC, | |
579 | FC_NL_ASYNC_EVENT, len); | |
fe7f4e5d | 580 | event->seconds = ktime_get_real_seconds(); |
2b1be558 | 581 | event->vendor_id = vendor_id; |
84314fd4 | 582 | event->host_no = shost->host_no; |
2b1be558 | 583 | event->event_datalen = data_len; /* bytes */ |
84314fd4 JS |
584 | event->event_num = event_number; |
585 | event->event_code = event_code; | |
2b1be558 JS |
586 | if (data_len) |
587 | memcpy(&event->event_data, data_buf, data_len); | |
84314fd4 | 588 | |
ff491a73 PNA |
589 | nlmsg_multicast(scsi_nl_sock, skb, 0, SCSI_NL_GRP_FC_EVENTS, |
590 | GFP_KERNEL); | |
84314fd4 JS |
591 | return; |
592 | ||
593 | send_fail_skb: | |
594 | kfree_skb(skb); | |
595 | send_fail: | |
596 | name = get_fc_host_event_code_name(event_code); | |
597 | printk(KERN_WARNING | |
598 | "%s: Dropped Event : host %d %s data 0x%08x - err %d\n", | |
cadbd4a5 | 599 | __func__, shost->host_no, |
2b1be558 JS |
600 | (name) ? name : "<unknown>", |
601 | (data_len) ? *((u32 *)data_buf) : 0xFFFFFFFF, err); | |
84314fd4 JS |
602 | return; |
603 | } | |
2b1be558 JS |
604 | EXPORT_SYMBOL(fc_host_post_fc_event); |
605 | ||
606 | /** | |
607 | * fc_host_post_event - called to post an even on an fc_host. | |
608 | * @shost: host the event occurred on | |
609 | * @event_number: fc event number obtained from get_fc_event_number() | |
610 | * @event_code: fc_host event being posted | |
611 | * @event_data: 32bits of data for the event being posted | |
612 | * | |
613 | * Notes: | |
614 | * This routine assumes no locks are held on entry. | |
615 | */ | |
616 | void | |
617 | fc_host_post_event(struct Scsi_Host *shost, u32 event_number, | |
618 | enum fc_host_event_code event_code, u32 event_data) | |
619 | { | |
620 | fc_host_post_fc_event(shost, event_number, event_code, | |
621 | (u32)sizeof(u32), (char *)&event_data, 0); | |
622 | } | |
84314fd4 JS |
623 | EXPORT_SYMBOL(fc_host_post_event); |
624 | ||
625 | ||
626 | /** | |
2b1be558 JS |
627 | * fc_host_post_vendor_event - called to post a vendor unique event |
628 | * on an fc_host | |
84314fd4 JS |
629 | * @shost: host the event occurred on |
630 | * @event_number: fc event number obtained from get_fc_event_number() | |
631 | * @data_len: amount, in bytes, of vendor unique data | |
632 | * @data_buf: pointer to vendor unique data | |
eb44820c | 633 | * @vendor_id: Vendor id |
84314fd4 JS |
634 | * |
635 | * Notes: | |
636 | * This routine assumes no locks are held on entry. | |
eb44820c | 637 | */ |
84314fd4 JS |
638 | void |
639 | fc_host_post_vendor_event(struct Scsi_Host *shost, u32 event_number, | |
f14e2e29 | 640 | u32 data_len, char * data_buf, u64 vendor_id) |
84314fd4 | 641 | { |
2b1be558 JS |
642 | fc_host_post_fc_event(shost, event_number, FCH_EVT_VENDOR_UNIQUE, |
643 | data_len, data_buf, vendor_id); | |
84314fd4 JS |
644 | } |
645 | EXPORT_SYMBOL(fc_host_post_vendor_event); | |
646 | ||
c39e0af6 JS |
647 | /** |
648 | * fc_host_rcv_fpin - routine to process a received FPIN. | |
649 | * @shost: host the FPIN was received on | |
650 | * @fpin_len: length of FPIN payload, in bytes | |
651 | * @fpin_buf: pointer to FPIN payload | |
652 | * | |
653 | * Notes: | |
654 | * This routine assumes no locks are held on entry. | |
655 | */ | |
656 | void | |
657 | fc_host_fpin_rcv(struct Scsi_Host *shost, u32 fpin_len, char *fpin_buf) | |
658 | { | |
659 | fc_host_post_fc_event(shost, fc_get_event_number(), | |
660 | FCH_EVT_LINK_FPIN, fpin_len, fpin_buf, 0); | |
661 | } | |
662 | EXPORT_SYMBOL(fc_host_fpin_rcv); | |
663 | ||
84314fd4 | 664 | |
1da177e4 LT |
665 | static __init int fc_transport_init(void) |
666 | { | |
84314fd4 JS |
667 | int error; |
668 | ||
669 | atomic_set(&fc_event_seq, 0); | |
670 | ||
671 | error = transport_class_register(&fc_host_class); | |
a53eb5e0 JS |
672 | if (error) |
673 | return error; | |
674 | error = transport_class_register(&fc_vport_class); | |
1da177e4 | 675 | if (error) |
48de68a4 | 676 | goto unreg_host_class; |
1da177e4 LT |
677 | error = transport_class_register(&fc_rport_class); |
678 | if (error) | |
48de68a4 MC |
679 | goto unreg_vport_class; |
680 | error = transport_class_register(&fc_transport_class); | |
681 | if (error) | |
682 | goto unreg_rport_class; | |
683 | return 0; | |
684 | ||
685 | unreg_rport_class: | |
686 | transport_class_unregister(&fc_rport_class); | |
687 | unreg_vport_class: | |
688 | transport_class_unregister(&fc_vport_class); | |
689 | unreg_host_class: | |
690 | transport_class_unregister(&fc_host_class); | |
691 | return error; | |
1da177e4 LT |
692 | } |
693 | ||
694 | static void __exit fc_transport_exit(void) | |
695 | { | |
696 | transport_class_unregister(&fc_transport_class); | |
697 | transport_class_unregister(&fc_rport_class); | |
698 | transport_class_unregister(&fc_host_class); | |
a53eb5e0 | 699 | transport_class_unregister(&fc_vport_class); |
1da177e4 LT |
700 | } |
701 | ||
702 | /* | |
703 | * FC Remote Port Attribute Management | |
704 | */ | |
705 | ||
706 | #define fc_rport_show_function(field, format_string, sz, cast) \ | |
707 | static ssize_t \ | |
ee959b00 TJ |
708 | show_fc_rport_##field (struct device *dev, \ |
709 | struct device_attribute *attr, char *buf) \ | |
1da177e4 | 710 | { \ |
ee959b00 | 711 | struct fc_rport *rport = transport_class_to_rport(dev); \ |
1da177e4 LT |
712 | struct Scsi_Host *shost = rport_to_shost(rport); \ |
713 | struct fc_internal *i = to_fc_internal(shost->transportt); \ | |
19a7b4ae JSEC |
714 | if ((i->f->get_rport_##field) && \ |
715 | !((rport->port_state == FC_PORTSTATE_BLOCKED) || \ | |
42e33148 | 716 | (rport->port_state == FC_PORTSTATE_DELETED) || \ |
19a7b4ae | 717 | (rport->port_state == FC_PORTSTATE_NOTPRESENT))) \ |
1da177e4 LT |
718 | i->f->get_rport_##field(rport); \ |
719 | return snprintf(buf, sz, format_string, cast rport->field); \ | |
720 | } | |
721 | ||
722 | #define fc_rport_store_function(field) \ | |
723 | static ssize_t \ | |
ee959b00 TJ |
724 | store_fc_rport_##field(struct device *dev, \ |
725 | struct device_attribute *attr, \ | |
726 | const char *buf, size_t count) \ | |
1da177e4 LT |
727 | { \ |
728 | int val; \ | |
ee959b00 | 729 | struct fc_rport *rport = transport_class_to_rport(dev); \ |
1da177e4 LT |
730 | struct Scsi_Host *shost = rport_to_shost(rport); \ |
731 | struct fc_internal *i = to_fc_internal(shost->transportt); \ | |
0f29b966 | 732 | char *cp; \ |
19a7b4ae | 733 | if ((rport->port_state == FC_PORTSTATE_BLOCKED) || \ |
42e33148 | 734 | (rport->port_state == FC_PORTSTATE_DELETED) || \ |
19a7b4ae JSEC |
735 | (rport->port_state == FC_PORTSTATE_NOTPRESENT)) \ |
736 | return -EBUSY; \ | |
0f29b966 JS |
737 | val = simple_strtoul(buf, &cp, 0); \ |
738 | if (*cp && (*cp != '\n')) \ | |
739 | return -EINVAL; \ | |
1da177e4 LT |
740 | i->f->set_rport_##field(rport, val); \ |
741 | return count; \ | |
742 | } | |
743 | ||
744 | #define fc_rport_rd_attr(field, format_string, sz) \ | |
745 | fc_rport_show_function(field, format_string, sz, ) \ | |
ee959b00 | 746 | static FC_DEVICE_ATTR(rport, field, S_IRUGO, \ |
1da177e4 LT |
747 | show_fc_rport_##field, NULL) |
748 | ||
749 | #define fc_rport_rd_attr_cast(field, format_string, sz, cast) \ | |
750 | fc_rport_show_function(field, format_string, sz, (cast)) \ | |
ee959b00 | 751 | static FC_DEVICE_ATTR(rport, field, S_IRUGO, \ |
1da177e4 LT |
752 | show_fc_rport_##field, NULL) |
753 | ||
754 | #define fc_rport_rw_attr(field, format_string, sz) \ | |
755 | fc_rport_show_function(field, format_string, sz, ) \ | |
756 | fc_rport_store_function(field) \ | |
ee959b00 | 757 | static FC_DEVICE_ATTR(rport, field, S_IRUGO | S_IWUSR, \ |
1da177e4 LT |
758 | show_fc_rport_##field, \ |
759 | store_fc_rport_##field) | |
760 | ||
761 | ||
762 | #define fc_private_rport_show_function(field, format_string, sz, cast) \ | |
763 | static ssize_t \ | |
ee959b00 TJ |
764 | show_fc_rport_##field (struct device *dev, \ |
765 | struct device_attribute *attr, char *buf) \ | |
1da177e4 | 766 | { \ |
ee959b00 | 767 | struct fc_rport *rport = transport_class_to_rport(dev); \ |
1da177e4 LT |
768 | return snprintf(buf, sz, format_string, cast rport->field); \ |
769 | } | |
770 | ||
771 | #define fc_private_rport_rd_attr(field, format_string, sz) \ | |
772 | fc_private_rport_show_function(field, format_string, sz, ) \ | |
ee959b00 | 773 | static FC_DEVICE_ATTR(rport, field, S_IRUGO, \ |
1da177e4 LT |
774 | show_fc_rport_##field, NULL) |
775 | ||
776 | #define fc_private_rport_rd_attr_cast(field, format_string, sz, cast) \ | |
777 | fc_private_rport_show_function(field, format_string, sz, (cast)) \ | |
ee959b00 | 778 | static FC_DEVICE_ATTR(rport, field, S_IRUGO, \ |
1da177e4 LT |
779 | show_fc_rport_##field, NULL) |
780 | ||
781 | ||
782 | #define fc_private_rport_rd_enum_attr(title, maxlen) \ | |
783 | static ssize_t \ | |
ee959b00 TJ |
784 | show_fc_rport_##title (struct device *dev, \ |
785 | struct device_attribute *attr, char *buf) \ | |
1da177e4 | 786 | { \ |
ee959b00 | 787 | struct fc_rport *rport = transport_class_to_rport(dev); \ |
1da177e4 LT |
788 | const char *name; \ |
789 | name = get_fc_##title##_name(rport->title); \ | |
790 | if (!name) \ | |
791 | return -EINVAL; \ | |
792 | return snprintf(buf, maxlen, "%s\n", name); \ | |
793 | } \ | |
ee959b00 | 794 | static FC_DEVICE_ATTR(rport, title, S_IRUGO, \ |
1da177e4 LT |
795 | show_fc_rport_##title, NULL) |
796 | ||
797 | ||
798 | #define SETUP_RPORT_ATTRIBUTE_RD(field) \ | |
ee959b00 | 799 | i->private_rport_attrs[count] = device_attr_rport_##field; \ |
1da177e4 LT |
800 | i->private_rport_attrs[count].attr.mode = S_IRUGO; \ |
801 | i->private_rport_attrs[count].store = NULL; \ | |
802 | i->rport_attrs[count] = &i->private_rport_attrs[count]; \ | |
803 | if (i->f->show_rport_##field) \ | |
804 | count++ | |
805 | ||
806 | #define SETUP_PRIVATE_RPORT_ATTRIBUTE_RD(field) \ | |
ee959b00 | 807 | i->private_rport_attrs[count] = device_attr_rport_##field; \ |
1da177e4 LT |
808 | i->private_rport_attrs[count].attr.mode = S_IRUGO; \ |
809 | i->private_rport_attrs[count].store = NULL; \ | |
810 | i->rport_attrs[count] = &i->private_rport_attrs[count]; \ | |
811 | count++ | |
812 | ||
813 | #define SETUP_RPORT_ATTRIBUTE_RW(field) \ | |
ee959b00 | 814 | i->private_rport_attrs[count] = device_attr_rport_##field; \ |
1da177e4 LT |
815 | if (!i->f->set_rport_##field) { \ |
816 | i->private_rport_attrs[count].attr.mode = S_IRUGO; \ | |
817 | i->private_rport_attrs[count].store = NULL; \ | |
818 | } \ | |
819 | i->rport_attrs[count] = &i->private_rport_attrs[count]; \ | |
820 | if (i->f->show_rport_##field) \ | |
821 | count++ | |
822 | ||
0f29b966 JS |
823 | #define SETUP_PRIVATE_RPORT_ATTRIBUTE_RW(field) \ |
824 | { \ | |
ee959b00 | 825 | i->private_rport_attrs[count] = device_attr_rport_##field; \ |
0f29b966 JS |
826 | i->rport_attrs[count] = &i->private_rport_attrs[count]; \ |
827 | count++; \ | |
828 | } | |
829 | ||
1da177e4 LT |
830 | |
831 | /* The FC Transport Remote Port Attributes: */ | |
832 | ||
833 | /* Fixed Remote Port Attributes */ | |
834 | ||
835 | fc_private_rport_rd_attr(maxframe_size, "%u bytes\n", 20); | |
836 | ||
837 | static ssize_t | |
ee959b00 TJ |
838 | show_fc_rport_supported_classes (struct device *dev, |
839 | struct device_attribute *attr, char *buf) | |
1da177e4 | 840 | { |
ee959b00 | 841 | struct fc_rport *rport = transport_class_to_rport(dev); |
1da177e4 LT |
842 | if (rport->supported_classes == FC_COS_UNSPECIFIED) |
843 | return snprintf(buf, 20, "unspecified\n"); | |
844 | return get_fc_cos_names(rport->supported_classes, buf); | |
845 | } | |
ee959b00 | 846 | static FC_DEVICE_ATTR(rport, supported_classes, S_IRUGO, |
1da177e4 LT |
847 | show_fc_rport_supported_classes, NULL); |
848 | ||
849 | /* Dynamic Remote Port Attributes */ | |
850 | ||
19a7b4ae JSEC |
851 | /* |
852 | * dev_loss_tmo attribute | |
853 | */ | |
43ca910a MC |
854 | static int fc_str_to_dev_loss(const char *buf, unsigned long *val) |
855 | { | |
856 | char *cp; | |
857 | ||
858 | *val = simple_strtoul(buf, &cp, 0); | |
eea42270 | 859 | if (*cp && (*cp != '\n')) |
43ca910a MC |
860 | return -EINVAL; |
861 | /* | |
862 | * Check for overflow; dev_loss_tmo is u32 | |
863 | */ | |
864 | if (*val > UINT_MAX) | |
865 | return -EINVAL; | |
866 | ||
867 | return 0; | |
868 | } | |
869 | ||
870 | static int fc_rport_set_dev_loss_tmo(struct fc_rport *rport, | |
871 | unsigned long val) | |
19a7b4ae | 872 | { |
19a7b4ae JSEC |
873 | struct Scsi_Host *shost = rport_to_shost(rport); |
874 | struct fc_internal *i = to_fc_internal(shost->transportt); | |
43ca910a | 875 | |
19a7b4ae | 876 | if ((rport->port_state == FC_PORTSTATE_BLOCKED) || |
42e33148 | 877 | (rport->port_state == FC_PORTSTATE_DELETED) || |
19a7b4ae JSEC |
878 | (rport->port_state == FC_PORTSTATE_NOTPRESENT)) |
879 | return -EBUSY; | |
36dd288f HR |
880 | /* |
881 | * Check for overflow; dev_loss_tmo is u32 | |
882 | */ | |
883 | if (val > UINT_MAX) | |
884 | return -EINVAL; | |
885 | ||
f2818663 HR |
886 | /* |
887 | * If fast_io_fail is off we have to cap | |
888 | * dev_loss_tmo at SCSI_DEVICE_BLOCK_MAX_TIMEOUT | |
889 | */ | |
890 | if (rport->fast_io_fail_tmo == -1 && | |
891 | val > SCSI_DEVICE_BLOCK_MAX_TIMEOUT) | |
892 | return -EINVAL; | |
893 | ||
19a7b4ae | 894 | i->f->set_rport_dev_loss_tmo(rport, val); |
43ca910a MC |
895 | return 0; |
896 | } | |
897 | ||
898 | fc_rport_show_function(dev_loss_tmo, "%d\n", 20, ) | |
899 | static ssize_t | |
900 | store_fc_rport_dev_loss_tmo(struct device *dev, struct device_attribute *attr, | |
901 | const char *buf, size_t count) | |
902 | { | |
903 | struct fc_rport *rport = transport_class_to_rport(dev); | |
904 | unsigned long val; | |
905 | int rc; | |
906 | ||
907 | rc = fc_str_to_dev_loss(buf, &val); | |
908 | if (rc) | |
909 | return rc; | |
910 | ||
911 | rc = fc_rport_set_dev_loss_tmo(rport, val); | |
912 | if (rc) | |
913 | return rc; | |
19a7b4ae JSEC |
914 | return count; |
915 | } | |
ee959b00 | 916 | static FC_DEVICE_ATTR(rport, dev_loss_tmo, S_IRUGO | S_IWUSR, |
19a7b4ae | 917 | show_fc_rport_dev_loss_tmo, store_fc_rport_dev_loss_tmo); |
1da177e4 LT |
918 | |
919 | ||
920 | /* Private Remote Port Attributes */ | |
921 | ||
922 | fc_private_rport_rd_attr_cast(node_name, "0x%llx\n", 20, unsigned long long); | |
923 | fc_private_rport_rd_attr_cast(port_name, "0x%llx\n", 20, unsigned long long); | |
924 | fc_private_rport_rd_attr(port_id, "0x%06x\n", 20); | |
925 | ||
926 | static ssize_t | |
ee959b00 TJ |
927 | show_fc_rport_roles (struct device *dev, struct device_attribute *attr, |
928 | char *buf) | |
1da177e4 | 929 | { |
ee959b00 | 930 | struct fc_rport *rport = transport_class_to_rport(dev); |
1da177e4 LT |
931 | |
932 | /* identify any roles that are port_id specific */ | |
933 | if ((rport->port_id != -1) && | |
934 | (rport->port_id & FC_WELLKNOWN_PORTID_MASK) == | |
935 | FC_WELLKNOWN_PORTID_MASK) { | |
936 | switch (rport->port_id & FC_WELLKNOWN_ROLE_MASK) { | |
937 | case FC_FPORT_PORTID: | |
938 | return snprintf(buf, 30, "Fabric Port\n"); | |
939 | case FC_FABCTLR_PORTID: | |
940 | return snprintf(buf, 30, "Fabric Controller\n"); | |
941 | case FC_DIRSRVR_PORTID: | |
942 | return snprintf(buf, 30, "Directory Server\n"); | |
943 | case FC_TIMESRVR_PORTID: | |
944 | return snprintf(buf, 30, "Time Server\n"); | |
945 | case FC_MGMTSRVR_PORTID: | |
946 | return snprintf(buf, 30, "Management Server\n"); | |
947 | default: | |
948 | return snprintf(buf, 30, "Unknown Fabric Entity\n"); | |
949 | } | |
950 | } else { | |
a53eb5e0 | 951 | if (rport->roles == FC_PORT_ROLE_UNKNOWN) |
1da177e4 | 952 | return snprintf(buf, 20, "unknown\n"); |
a53eb5e0 | 953 | return get_fc_port_roles_names(rport->roles, buf); |
1da177e4 LT |
954 | } |
955 | } | |
ee959b00 | 956 | static FC_DEVICE_ATTR(rport, roles, S_IRUGO, |
1da177e4 LT |
957 | show_fc_rport_roles, NULL); |
958 | ||
959 | fc_private_rport_rd_enum_attr(port_state, FC_PORTSTATE_MAX_NAMELEN); | |
960 | fc_private_rport_rd_attr(scsi_target_id, "%d\n", 20); | |
961 | ||
0f29b966 JS |
962 | /* |
963 | * fast_io_fail_tmo attribute | |
964 | */ | |
965 | static ssize_t | |
ee959b00 TJ |
966 | show_fc_rport_fast_io_fail_tmo (struct device *dev, |
967 | struct device_attribute *attr, char *buf) | |
0f29b966 | 968 | { |
ee959b00 | 969 | struct fc_rport *rport = transport_class_to_rport(dev); |
0f29b966 JS |
970 | |
971 | if (rport->fast_io_fail_tmo == -1) | |
972 | return snprintf(buf, 5, "off\n"); | |
973 | return snprintf(buf, 20, "%d\n", rport->fast_io_fail_tmo); | |
974 | } | |
975 | ||
976 | static ssize_t | |
ee959b00 TJ |
977 | store_fc_rport_fast_io_fail_tmo(struct device *dev, |
978 | struct device_attribute *attr, const char *buf, | |
979 | size_t count) | |
0f29b966 JS |
980 | { |
981 | int val; | |
982 | char *cp; | |
ee959b00 | 983 | struct fc_rport *rport = transport_class_to_rport(dev); |
0f29b966 JS |
984 | |
985 | if ((rport->port_state == FC_PORTSTATE_BLOCKED) || | |
986 | (rport->port_state == FC_PORTSTATE_DELETED) || | |
987 | (rport->port_state == FC_PORTSTATE_NOTPRESENT)) | |
988 | return -EBUSY; | |
989 | if (strncmp(buf, "off", 3) == 0) | |
990 | rport->fast_io_fail_tmo = -1; | |
991 | else { | |
992 | val = simple_strtoul(buf, &cp, 0); | |
f2818663 HR |
993 | if ((*cp && (*cp != '\n')) || (val < 0)) |
994 | return -EINVAL; | |
995 | /* | |
996 | * Cap fast_io_fail by dev_loss_tmo or | |
997 | * SCSI_DEVICE_BLOCK_MAX_TIMEOUT. | |
998 | */ | |
999 | if ((val >= rport->dev_loss_tmo) || | |
1000 | (val > SCSI_DEVICE_BLOCK_MAX_TIMEOUT)) | |
0f29b966 | 1001 | return -EINVAL; |
f2818663 | 1002 | |
0f29b966 JS |
1003 | rport->fast_io_fail_tmo = val; |
1004 | } | |
1005 | return count; | |
1006 | } | |
ee959b00 | 1007 | static FC_DEVICE_ATTR(rport, fast_io_fail_tmo, S_IRUGO | S_IWUSR, |
0f29b966 | 1008 | show_fc_rport_fast_io_fail_tmo, store_fc_rport_fast_io_fail_tmo); |
1da177e4 LT |
1009 | |
1010 | ||
1011 | /* | |
1012 | * FC SCSI Target Attribute Management | |
1013 | */ | |
1014 | ||
1015 | /* | |
1016 | * Note: in the target show function we recognize when the remote | |
732bee7a | 1017 | * port is in the hierarchy and do not allow the driver to get |
1da177e4 LT |
1018 | * involved in sysfs functions. The driver only gets involved if |
1019 | * it's the "old" style that doesn't use rports. | |
1020 | */ | |
1021 | #define fc_starget_show_function(field, format_string, sz, cast) \ | |
1022 | static ssize_t \ | |
ee959b00 TJ |
1023 | show_fc_starget_##field (struct device *dev, \ |
1024 | struct device_attribute *attr, char *buf) \ | |
1da177e4 | 1025 | { \ |
ee959b00 | 1026 | struct scsi_target *starget = transport_class_to_starget(dev); \ |
1da177e4 LT |
1027 | struct Scsi_Host *shost = dev_to_shost(starget->dev.parent); \ |
1028 | struct fc_internal *i = to_fc_internal(shost->transportt); \ | |
1029 | struct fc_rport *rport = starget_to_rport(starget); \ | |
1030 | if (rport) \ | |
1031 | fc_starget_##field(starget) = rport->field; \ | |
1032 | else if (i->f->get_starget_##field) \ | |
1033 | i->f->get_starget_##field(starget); \ | |
1034 | return snprintf(buf, sz, format_string, \ | |
1035 | cast fc_starget_##field(starget)); \ | |
1036 | } | |
1037 | ||
1038 | #define fc_starget_rd_attr(field, format_string, sz) \ | |
1039 | fc_starget_show_function(field, format_string, sz, ) \ | |
ee959b00 | 1040 | static FC_DEVICE_ATTR(starget, field, S_IRUGO, \ |
1da177e4 LT |
1041 | show_fc_starget_##field, NULL) |
1042 | ||
1043 | #define fc_starget_rd_attr_cast(field, format_string, sz, cast) \ | |
1044 | fc_starget_show_function(field, format_string, sz, (cast)) \ | |
ee959b00 | 1045 | static FC_DEVICE_ATTR(starget, field, S_IRUGO, \ |
1da177e4 LT |
1046 | show_fc_starget_##field, NULL) |
1047 | ||
1048 | #define SETUP_STARGET_ATTRIBUTE_RD(field) \ | |
ee959b00 | 1049 | i->private_starget_attrs[count] = device_attr_starget_##field; \ |
1da177e4 LT |
1050 | i->private_starget_attrs[count].attr.mode = S_IRUGO; \ |
1051 | i->private_starget_attrs[count].store = NULL; \ | |
1052 | i->starget_attrs[count] = &i->private_starget_attrs[count]; \ | |
1053 | if (i->f->show_starget_##field) \ | |
1054 | count++ | |
1055 | ||
1056 | #define SETUP_STARGET_ATTRIBUTE_RW(field) \ | |
ee959b00 | 1057 | i->private_starget_attrs[count] = device_attr_starget_##field; \ |
1da177e4 LT |
1058 | if (!i->f->set_starget_##field) { \ |
1059 | i->private_starget_attrs[count].attr.mode = S_IRUGO; \ | |
1060 | i->private_starget_attrs[count].store = NULL; \ | |
1061 | } \ | |
1062 | i->starget_attrs[count] = &i->private_starget_attrs[count]; \ | |
1063 | if (i->f->show_starget_##field) \ | |
1064 | count++ | |
1065 | ||
1066 | /* The FC Transport SCSI Target Attributes: */ | |
1067 | fc_starget_rd_attr_cast(node_name, "0x%llx\n", 20, unsigned long long); | |
1068 | fc_starget_rd_attr_cast(port_name, "0x%llx\n", 20, unsigned long long); | |
1069 | fc_starget_rd_attr(port_id, "0x%06x\n", 20); | |
1070 | ||
1071 | ||
a53eb5e0 JS |
1072 | /* |
1073 | * FC Virtual Port Attribute Management | |
1074 | */ | |
1075 | ||
1076 | #define fc_vport_show_function(field, format_string, sz, cast) \ | |
1077 | static ssize_t \ | |
ee959b00 TJ |
1078 | show_fc_vport_##field (struct device *dev, \ |
1079 | struct device_attribute *attr, char *buf) \ | |
a53eb5e0 | 1080 | { \ |
ee959b00 | 1081 | struct fc_vport *vport = transport_class_to_vport(dev); \ |
a53eb5e0 JS |
1082 | struct Scsi_Host *shost = vport_to_shost(vport); \ |
1083 | struct fc_internal *i = to_fc_internal(shost->transportt); \ | |
1084 | if ((i->f->get_vport_##field) && \ | |
1085 | !(vport->flags & (FC_VPORT_DEL | FC_VPORT_CREATING))) \ | |
1086 | i->f->get_vport_##field(vport); \ | |
1087 | return snprintf(buf, sz, format_string, cast vport->field); \ | |
1088 | } | |
1089 | ||
1090 | #define fc_vport_store_function(field) \ | |
1091 | static ssize_t \ | |
ee959b00 TJ |
1092 | store_fc_vport_##field(struct device *dev, \ |
1093 | struct device_attribute *attr, \ | |
1094 | const char *buf, size_t count) \ | |
a53eb5e0 JS |
1095 | { \ |
1096 | int val; \ | |
ee959b00 | 1097 | struct fc_vport *vport = transport_class_to_vport(dev); \ |
a53eb5e0 JS |
1098 | struct Scsi_Host *shost = vport_to_shost(vport); \ |
1099 | struct fc_internal *i = to_fc_internal(shost->transportt); \ | |
1100 | char *cp; \ | |
1101 | if (vport->flags & (FC_VPORT_DEL | FC_VPORT_CREATING)) \ | |
1102 | return -EBUSY; \ | |
1103 | val = simple_strtoul(buf, &cp, 0); \ | |
1104 | if (*cp && (*cp != '\n')) \ | |
1105 | return -EINVAL; \ | |
1106 | i->f->set_vport_##field(vport, val); \ | |
1107 | return count; \ | |
1108 | } | |
1109 | ||
1110 | #define fc_vport_store_str_function(field, slen) \ | |
1111 | static ssize_t \ | |
ee959b00 TJ |
1112 | store_fc_vport_##field(struct device *dev, \ |
1113 | struct device_attribute *attr, \ | |
1114 | const char *buf, size_t count) \ | |
a53eb5e0 | 1115 | { \ |
ee959b00 | 1116 | struct fc_vport *vport = transport_class_to_vport(dev); \ |
a53eb5e0 JS |
1117 | struct Scsi_Host *shost = vport_to_shost(vport); \ |
1118 | struct fc_internal *i = to_fc_internal(shost->transportt); \ | |
1119 | unsigned int cnt=count; \ | |
1120 | \ | |
1121 | /* count may include a LF at end of string */ \ | |
1122 | if (buf[cnt-1] == '\n') \ | |
1123 | cnt--; \ | |
1124 | if (cnt > ((slen) - 1)) \ | |
1125 | return -EINVAL; \ | |
1126 | memcpy(vport->field, buf, cnt); \ | |
1127 | i->f->set_vport_##field(vport); \ | |
1128 | return count; \ | |
1129 | } | |
1130 | ||
1131 | #define fc_vport_rd_attr(field, format_string, sz) \ | |
1132 | fc_vport_show_function(field, format_string, sz, ) \ | |
ee959b00 | 1133 | static FC_DEVICE_ATTR(vport, field, S_IRUGO, \ |
a53eb5e0 JS |
1134 | show_fc_vport_##field, NULL) |
1135 | ||
1136 | #define fc_vport_rd_attr_cast(field, format_string, sz, cast) \ | |
1137 | fc_vport_show_function(field, format_string, sz, (cast)) \ | |
ee959b00 | 1138 | static FC_DEVICE_ATTR(vport, field, S_IRUGO, \ |
a53eb5e0 JS |
1139 | show_fc_vport_##field, NULL) |
1140 | ||
1141 | #define fc_vport_rw_attr(field, format_string, sz) \ | |
1142 | fc_vport_show_function(field, format_string, sz, ) \ | |
1143 | fc_vport_store_function(field) \ | |
ee959b00 | 1144 | static FC_DEVICE_ATTR(vport, field, S_IRUGO | S_IWUSR, \ |
a53eb5e0 JS |
1145 | show_fc_vport_##field, \ |
1146 | store_fc_vport_##field) | |
1147 | ||
1148 | #define fc_private_vport_show_function(field, format_string, sz, cast) \ | |
1149 | static ssize_t \ | |
ee959b00 TJ |
1150 | show_fc_vport_##field (struct device *dev, \ |
1151 | struct device_attribute *attr, char *buf) \ | |
a53eb5e0 | 1152 | { \ |
ee959b00 | 1153 | struct fc_vport *vport = transport_class_to_vport(dev); \ |
a53eb5e0 JS |
1154 | return snprintf(buf, sz, format_string, cast vport->field); \ |
1155 | } | |
1156 | ||
1157 | #define fc_private_vport_store_u32_function(field) \ | |
1158 | static ssize_t \ | |
ee959b00 TJ |
1159 | store_fc_vport_##field(struct device *dev, \ |
1160 | struct device_attribute *attr, \ | |
1161 | const char *buf, size_t count) \ | |
a53eb5e0 JS |
1162 | { \ |
1163 | u32 val; \ | |
ee959b00 | 1164 | struct fc_vport *vport = transport_class_to_vport(dev); \ |
a53eb5e0 JS |
1165 | char *cp; \ |
1166 | if (vport->flags & (FC_VPORT_DEL | FC_VPORT_CREATING)) \ | |
1167 | return -EBUSY; \ | |
1168 | val = simple_strtoul(buf, &cp, 0); \ | |
1169 | if (*cp && (*cp != '\n')) \ | |
1170 | return -EINVAL; \ | |
1171 | vport->field = val; \ | |
1172 | return count; \ | |
1173 | } | |
1174 | ||
1175 | ||
1176 | #define fc_private_vport_rd_attr(field, format_string, sz) \ | |
1177 | fc_private_vport_show_function(field, format_string, sz, ) \ | |
ee959b00 | 1178 | static FC_DEVICE_ATTR(vport, field, S_IRUGO, \ |
a53eb5e0 JS |
1179 | show_fc_vport_##field, NULL) |
1180 | ||
1181 | #define fc_private_vport_rd_attr_cast(field, format_string, sz, cast) \ | |
1182 | fc_private_vport_show_function(field, format_string, sz, (cast)) \ | |
ee959b00 | 1183 | static FC_DEVICE_ATTR(vport, field, S_IRUGO, \ |
a53eb5e0 JS |
1184 | show_fc_vport_##field, NULL) |
1185 | ||
1186 | #define fc_private_vport_rw_u32_attr(field, format_string, sz) \ | |
1187 | fc_private_vport_show_function(field, format_string, sz, ) \ | |
1188 | fc_private_vport_store_u32_function(field) \ | |
ee959b00 | 1189 | static FC_DEVICE_ATTR(vport, field, S_IRUGO | S_IWUSR, \ |
a53eb5e0 JS |
1190 | show_fc_vport_##field, \ |
1191 | store_fc_vport_##field) | |
1192 | ||
1193 | ||
1194 | #define fc_private_vport_rd_enum_attr(title, maxlen) \ | |
1195 | static ssize_t \ | |
ee959b00 TJ |
1196 | show_fc_vport_##title (struct device *dev, \ |
1197 | struct device_attribute *attr, \ | |
1198 | char *buf) \ | |
a53eb5e0 | 1199 | { \ |
ee959b00 | 1200 | struct fc_vport *vport = transport_class_to_vport(dev); \ |
a53eb5e0 JS |
1201 | const char *name; \ |
1202 | name = get_fc_##title##_name(vport->title); \ | |
1203 | if (!name) \ | |
1204 | return -EINVAL; \ | |
1205 | return snprintf(buf, maxlen, "%s\n", name); \ | |
1206 | } \ | |
ee959b00 | 1207 | static FC_DEVICE_ATTR(vport, title, S_IRUGO, \ |
a53eb5e0 JS |
1208 | show_fc_vport_##title, NULL) |
1209 | ||
1210 | ||
1211 | #define SETUP_VPORT_ATTRIBUTE_RD(field) \ | |
ee959b00 | 1212 | i->private_vport_attrs[count] = device_attr_vport_##field; \ |
a53eb5e0 JS |
1213 | i->private_vport_attrs[count].attr.mode = S_IRUGO; \ |
1214 | i->private_vport_attrs[count].store = NULL; \ | |
1215 | i->vport_attrs[count] = &i->private_vport_attrs[count]; \ | |
1216 | if (i->f->get_##field) \ | |
1217 | count++ | |
1218 | /* NOTE: Above MACRO differs: checks function not show bit */ | |
1219 | ||
1220 | #define SETUP_PRIVATE_VPORT_ATTRIBUTE_RD(field) \ | |
ee959b00 | 1221 | i->private_vport_attrs[count] = device_attr_vport_##field; \ |
a53eb5e0 JS |
1222 | i->private_vport_attrs[count].attr.mode = S_IRUGO; \ |
1223 | i->private_vport_attrs[count].store = NULL; \ | |
1224 | i->vport_attrs[count] = &i->private_vport_attrs[count]; \ | |
1225 | count++ | |
1226 | ||
1227 | #define SETUP_VPORT_ATTRIBUTE_WR(field) \ | |
ee959b00 | 1228 | i->private_vport_attrs[count] = device_attr_vport_##field; \ |
a53eb5e0 JS |
1229 | i->vport_attrs[count] = &i->private_vport_attrs[count]; \ |
1230 | if (i->f->field) \ | |
1231 | count++ | |
1232 | /* NOTE: Above MACRO differs: checks function */ | |
1233 | ||
1234 | #define SETUP_VPORT_ATTRIBUTE_RW(field) \ | |
ee959b00 | 1235 | i->private_vport_attrs[count] = device_attr_vport_##field; \ |
a53eb5e0 JS |
1236 | if (!i->f->set_vport_##field) { \ |
1237 | i->private_vport_attrs[count].attr.mode = S_IRUGO; \ | |
1238 | i->private_vport_attrs[count].store = NULL; \ | |
1239 | } \ | |
1240 | i->vport_attrs[count] = &i->private_vport_attrs[count]; \ | |
1241 | count++ | |
1242 | /* NOTE: Above MACRO differs: does not check show bit */ | |
1243 | ||
1244 | #define SETUP_PRIVATE_VPORT_ATTRIBUTE_RW(field) \ | |
1245 | { \ | |
ee959b00 | 1246 | i->private_vport_attrs[count] = device_attr_vport_##field; \ |
a53eb5e0 JS |
1247 | i->vport_attrs[count] = &i->private_vport_attrs[count]; \ |
1248 | count++; \ | |
1249 | } | |
1250 | ||
1251 | ||
1252 | /* The FC Transport Virtual Port Attributes: */ | |
1253 | ||
1254 | /* Fixed Virtual Port Attributes */ | |
1255 | ||
1256 | /* Dynamic Virtual Port Attributes */ | |
1257 | ||
1258 | /* Private Virtual Port Attributes */ | |
1259 | ||
1260 | fc_private_vport_rd_enum_attr(vport_state, FC_VPORTSTATE_MAX_NAMELEN); | |
1261 | fc_private_vport_rd_enum_attr(vport_last_state, FC_VPORTSTATE_MAX_NAMELEN); | |
1262 | fc_private_vport_rd_attr_cast(node_name, "0x%llx\n", 20, unsigned long long); | |
1263 | fc_private_vport_rd_attr_cast(port_name, "0x%llx\n", 20, unsigned long long); | |
1264 | ||
1265 | static ssize_t | |
ee959b00 TJ |
1266 | show_fc_vport_roles (struct device *dev, struct device_attribute *attr, |
1267 | char *buf) | |
a53eb5e0 | 1268 | { |
ee959b00 | 1269 | struct fc_vport *vport = transport_class_to_vport(dev); |
a53eb5e0 JS |
1270 | |
1271 | if (vport->roles == FC_PORT_ROLE_UNKNOWN) | |
1272 | return snprintf(buf, 20, "unknown\n"); | |
1273 | return get_fc_port_roles_names(vport->roles, buf); | |
1274 | } | |
ee959b00 | 1275 | static FC_DEVICE_ATTR(vport, roles, S_IRUGO, show_fc_vport_roles, NULL); |
a53eb5e0 JS |
1276 | |
1277 | fc_private_vport_rd_enum_attr(vport_type, FC_PORTTYPE_MAX_NAMELEN); | |
1278 | ||
1279 | fc_private_vport_show_function(symbolic_name, "%s\n", | |
1280 | FC_VPORT_SYMBOLIC_NAMELEN + 1, ) | |
1281 | fc_vport_store_str_function(symbolic_name, FC_VPORT_SYMBOLIC_NAMELEN) | |
ee959b00 | 1282 | static FC_DEVICE_ATTR(vport, symbolic_name, S_IRUGO | S_IWUSR, |
a53eb5e0 JS |
1283 | show_fc_vport_symbolic_name, store_fc_vport_symbolic_name); |
1284 | ||
1285 | static ssize_t | |
ee959b00 TJ |
1286 | store_fc_vport_delete(struct device *dev, struct device_attribute *attr, |
1287 | const char *buf, size_t count) | |
a53eb5e0 | 1288 | { |
ee959b00 | 1289 | struct fc_vport *vport = transport_class_to_vport(dev); |
9ef3e4a4 | 1290 | struct Scsi_Host *shost = vport_to_shost(vport); |
0d9dc7c8 GR |
1291 | unsigned long flags; |
1292 | ||
1293 | spin_lock_irqsave(shost->host_lock, flags); | |
260f4aed | 1294 | if (vport->flags & (FC_VPORT_DEL | FC_VPORT_CREATING | FC_VPORT_DELETING)) { |
0d9dc7c8 GR |
1295 | spin_unlock_irqrestore(shost->host_lock, flags); |
1296 | return -EBUSY; | |
1297 | } | |
1298 | vport->flags |= FC_VPORT_DELETING; | |
1299 | spin_unlock_irqrestore(shost->host_lock, flags); | |
a53eb5e0 | 1300 | |
9ef3e4a4 | 1301 | fc_queue_work(shost, &vport->vport_delete_work); |
a53eb5e0 JS |
1302 | return count; |
1303 | } | |
ee959b00 | 1304 | static FC_DEVICE_ATTR(vport, vport_delete, S_IWUSR, |
a53eb5e0 JS |
1305 | NULL, store_fc_vport_delete); |
1306 | ||
1307 | ||
1308 | /* | |
1309 | * Enable/Disable vport | |
1310 | * Write "1" to disable, write "0" to enable | |
1311 | */ | |
1312 | static ssize_t | |
ee959b00 TJ |
1313 | store_fc_vport_disable(struct device *dev, struct device_attribute *attr, |
1314 | const char *buf, | |
a53eb5e0 JS |
1315 | size_t count) |
1316 | { | |
ee959b00 | 1317 | struct fc_vport *vport = transport_class_to_vport(dev); |
a53eb5e0 JS |
1318 | struct Scsi_Host *shost = vport_to_shost(vport); |
1319 | struct fc_internal *i = to_fc_internal(shost->transportt); | |
1320 | int stat; | |
1321 | ||
1322 | if (vport->flags & (FC_VPORT_DEL | FC_VPORT_CREATING)) | |
1323 | return -EBUSY; | |
1324 | ||
1325 | if (*buf == '0') { | |
1326 | if (vport->vport_state != FC_VPORT_DISABLED) | |
1327 | return -EALREADY; | |
1328 | } else if (*buf == '1') { | |
1329 | if (vport->vport_state == FC_VPORT_DISABLED) | |
1330 | return -EALREADY; | |
1331 | } else | |
1332 | return -EINVAL; | |
1333 | ||
1334 | stat = i->f->vport_disable(vport, ((*buf == '0') ? false : true)); | |
1335 | return stat ? stat : count; | |
1336 | } | |
ee959b00 | 1337 | static FC_DEVICE_ATTR(vport, vport_disable, S_IWUSR, |
a53eb5e0 JS |
1338 | NULL, store_fc_vport_disable); |
1339 | ||
1340 | ||
1da177e4 LT |
1341 | /* |
1342 | * Host Attribute Management | |
1343 | */ | |
1344 | ||
1345 | #define fc_host_show_function(field, format_string, sz, cast) \ | |
1346 | static ssize_t \ | |
ee959b00 TJ |
1347 | show_fc_host_##field (struct device *dev, \ |
1348 | struct device_attribute *attr, char *buf) \ | |
1da177e4 | 1349 | { \ |
ee959b00 | 1350 | struct Scsi_Host *shost = transport_class_to_shost(dev); \ |
1da177e4 LT |
1351 | struct fc_internal *i = to_fc_internal(shost->transportt); \ |
1352 | if (i->f->get_host_##field) \ | |
1353 | i->f->get_host_##field(shost); \ | |
1354 | return snprintf(buf, sz, format_string, cast fc_host_##field(shost)); \ | |
1355 | } | |
1356 | ||
1357 | #define fc_host_store_function(field) \ | |
1358 | static ssize_t \ | |
ee959b00 TJ |
1359 | store_fc_host_##field(struct device *dev, \ |
1360 | struct device_attribute *attr, \ | |
1361 | const char *buf, size_t count) \ | |
1da177e4 LT |
1362 | { \ |
1363 | int val; \ | |
ee959b00 | 1364 | struct Scsi_Host *shost = transport_class_to_shost(dev); \ |
1da177e4 | 1365 | struct fc_internal *i = to_fc_internal(shost->transportt); \ |
0f29b966 | 1366 | char *cp; \ |
1da177e4 | 1367 | \ |
0f29b966 JS |
1368 | val = simple_strtoul(buf, &cp, 0); \ |
1369 | if (*cp && (*cp != '\n')) \ | |
1370 | return -EINVAL; \ | |
1da177e4 LT |
1371 | i->f->set_host_##field(shost, val); \ |
1372 | return count; \ | |
1373 | } | |
1374 | ||
b8d08210 JS |
1375 | #define fc_host_store_str_function(field, slen) \ |
1376 | static ssize_t \ | |
ee959b00 TJ |
1377 | store_fc_host_##field(struct device *dev, \ |
1378 | struct device_attribute *attr, \ | |
1379 | const char *buf, size_t count) \ | |
b8d08210 | 1380 | { \ |
ee959b00 | 1381 | struct Scsi_Host *shost = transport_class_to_shost(dev); \ |
b8d08210 JS |
1382 | struct fc_internal *i = to_fc_internal(shost->transportt); \ |
1383 | unsigned int cnt=count; \ | |
1384 | \ | |
1385 | /* count may include a LF at end of string */ \ | |
1386 | if (buf[cnt-1] == '\n') \ | |
1387 | cnt--; \ | |
1388 | if (cnt > ((slen) - 1)) \ | |
1389 | return -EINVAL; \ | |
1390 | memcpy(fc_host_##field(shost), buf, cnt); \ | |
1391 | i->f->set_host_##field(shost); \ | |
1392 | return count; \ | |
1393 | } | |
1394 | ||
1da177e4 LT |
1395 | #define fc_host_rd_attr(field, format_string, sz) \ |
1396 | fc_host_show_function(field, format_string, sz, ) \ | |
ee959b00 | 1397 | static FC_DEVICE_ATTR(host, field, S_IRUGO, \ |
1da177e4 LT |
1398 | show_fc_host_##field, NULL) |
1399 | ||
1400 | #define fc_host_rd_attr_cast(field, format_string, sz, cast) \ | |
1401 | fc_host_show_function(field, format_string, sz, (cast)) \ | |
ee959b00 | 1402 | static FC_DEVICE_ATTR(host, field, S_IRUGO, \ |
1da177e4 LT |
1403 | show_fc_host_##field, NULL) |
1404 | ||
1405 | #define fc_host_rw_attr(field, format_string, sz) \ | |
1406 | fc_host_show_function(field, format_string, sz, ) \ | |
1407 | fc_host_store_function(field) \ | |
ee959b00 | 1408 | static FC_DEVICE_ATTR(host, field, S_IRUGO | S_IWUSR, \ |
1da177e4 LT |
1409 | show_fc_host_##field, \ |
1410 | store_fc_host_##field) | |
1411 | ||
1412 | #define fc_host_rd_enum_attr(title, maxlen) \ | |
1413 | static ssize_t \ | |
ee959b00 TJ |
1414 | show_fc_host_##title (struct device *dev, \ |
1415 | struct device_attribute *attr, char *buf) \ | |
1da177e4 | 1416 | { \ |
ee959b00 | 1417 | struct Scsi_Host *shost = transport_class_to_shost(dev); \ |
1da177e4 LT |
1418 | struct fc_internal *i = to_fc_internal(shost->transportt); \ |
1419 | const char *name; \ | |
1420 | if (i->f->get_host_##title) \ | |
1421 | i->f->get_host_##title(shost); \ | |
1422 | name = get_fc_##title##_name(fc_host_##title(shost)); \ | |
1423 | if (!name) \ | |
1424 | return -EINVAL; \ | |
1425 | return snprintf(buf, maxlen, "%s\n", name); \ | |
1426 | } \ | |
ee959b00 | 1427 | static FC_DEVICE_ATTR(host, title, S_IRUGO, show_fc_host_##title, NULL) |
1da177e4 LT |
1428 | |
1429 | #define SETUP_HOST_ATTRIBUTE_RD(field) \ | |
ee959b00 | 1430 | i->private_host_attrs[count] = device_attr_host_##field; \ |
1da177e4 LT |
1431 | i->private_host_attrs[count].attr.mode = S_IRUGO; \ |
1432 | i->private_host_attrs[count].store = NULL; \ | |
1433 | i->host_attrs[count] = &i->private_host_attrs[count]; \ | |
1434 | if (i->f->show_host_##field) \ | |
1435 | count++ | |
1436 | ||
a53eb5e0 | 1437 | #define SETUP_HOST_ATTRIBUTE_RD_NS(field) \ |
ee959b00 | 1438 | i->private_host_attrs[count] = device_attr_host_##field; \ |
a53eb5e0 JS |
1439 | i->private_host_attrs[count].attr.mode = S_IRUGO; \ |
1440 | i->private_host_attrs[count].store = NULL; \ | |
1441 | i->host_attrs[count] = &i->private_host_attrs[count]; \ | |
1442 | count++ | |
1443 | ||
1da177e4 | 1444 | #define SETUP_HOST_ATTRIBUTE_RW(field) \ |
ee959b00 | 1445 | i->private_host_attrs[count] = device_attr_host_##field; \ |
1da177e4 LT |
1446 | if (!i->f->set_host_##field) { \ |
1447 | i->private_host_attrs[count].attr.mode = S_IRUGO; \ | |
1448 | i->private_host_attrs[count].store = NULL; \ | |
1449 | } \ | |
1450 | i->host_attrs[count] = &i->private_host_attrs[count]; \ | |
1451 | if (i->f->show_host_##field) \ | |
1452 | count++ | |
1453 | ||
1454 | ||
1455 | #define fc_private_host_show_function(field, format_string, sz, cast) \ | |
1456 | static ssize_t \ | |
ee959b00 TJ |
1457 | show_fc_host_##field (struct device *dev, \ |
1458 | struct device_attribute *attr, char *buf) \ | |
1da177e4 | 1459 | { \ |
ee959b00 | 1460 | struct Scsi_Host *shost = transport_class_to_shost(dev); \ |
1da177e4 LT |
1461 | return snprintf(buf, sz, format_string, cast fc_host_##field(shost)); \ |
1462 | } | |
1463 | ||
1464 | #define fc_private_host_rd_attr(field, format_string, sz) \ | |
1465 | fc_private_host_show_function(field, format_string, sz, ) \ | |
ee959b00 | 1466 | static FC_DEVICE_ATTR(host, field, S_IRUGO, \ |
1da177e4 LT |
1467 | show_fc_host_##field, NULL) |
1468 | ||
1469 | #define fc_private_host_rd_attr_cast(field, format_string, sz, cast) \ | |
1470 | fc_private_host_show_function(field, format_string, sz, (cast)) \ | |
ee959b00 | 1471 | static FC_DEVICE_ATTR(host, field, S_IRUGO, \ |
1da177e4 LT |
1472 | show_fc_host_##field, NULL) |
1473 | ||
1474 | #define SETUP_PRIVATE_HOST_ATTRIBUTE_RD(field) \ | |
ee959b00 | 1475 | i->private_host_attrs[count] = device_attr_host_##field; \ |
1da177e4 LT |
1476 | i->private_host_attrs[count].attr.mode = S_IRUGO; \ |
1477 | i->private_host_attrs[count].store = NULL; \ | |
1478 | i->host_attrs[count] = &i->private_host_attrs[count]; \ | |
1479 | count++ | |
1480 | ||
1481 | #define SETUP_PRIVATE_HOST_ATTRIBUTE_RW(field) \ | |
91ca7b01 | 1482 | { \ |
ee959b00 | 1483 | i->private_host_attrs[count] = device_attr_host_##field; \ |
1da177e4 | 1484 | i->host_attrs[count] = &i->private_host_attrs[count]; \ |
91ca7b01 AV |
1485 | count++; \ |
1486 | } | |
1da177e4 LT |
1487 | |
1488 | ||
1489 | /* Fixed Host Attributes */ | |
1490 | ||
1491 | static ssize_t | |
ee959b00 TJ |
1492 | show_fc_host_supported_classes (struct device *dev, |
1493 | struct device_attribute *attr, char *buf) | |
1da177e4 | 1494 | { |
ee959b00 | 1495 | struct Scsi_Host *shost = transport_class_to_shost(dev); |
1da177e4 LT |
1496 | |
1497 | if (fc_host_supported_classes(shost) == FC_COS_UNSPECIFIED) | |
1498 | return snprintf(buf, 20, "unspecified\n"); | |
1499 | ||
1500 | return get_fc_cos_names(fc_host_supported_classes(shost), buf); | |
1501 | } | |
ee959b00 | 1502 | static FC_DEVICE_ATTR(host, supported_classes, S_IRUGO, |
1da177e4 LT |
1503 | show_fc_host_supported_classes, NULL); |
1504 | ||
1505 | static ssize_t | |
ee959b00 TJ |
1506 | show_fc_host_supported_fc4s (struct device *dev, |
1507 | struct device_attribute *attr, char *buf) | |
1da177e4 | 1508 | { |
ee959b00 | 1509 | struct Scsi_Host *shost = transport_class_to_shost(dev); |
1da177e4 LT |
1510 | return (ssize_t)show_fc_fc4s(buf, fc_host_supported_fc4s(shost)); |
1511 | } | |
ee959b00 | 1512 | static FC_DEVICE_ATTR(host, supported_fc4s, S_IRUGO, |
1da177e4 LT |
1513 | show_fc_host_supported_fc4s, NULL); |
1514 | ||
1515 | static ssize_t | |
ee959b00 TJ |
1516 | show_fc_host_supported_speeds (struct device *dev, |
1517 | struct device_attribute *attr, char *buf) | |
1da177e4 | 1518 | { |
ee959b00 | 1519 | struct Scsi_Host *shost = transport_class_to_shost(dev); |
1da177e4 LT |
1520 | |
1521 | if (fc_host_supported_speeds(shost) == FC_PORTSPEED_UNKNOWN) | |
1522 | return snprintf(buf, 20, "unknown\n"); | |
1523 | ||
1524 | return get_fc_port_speed_names(fc_host_supported_speeds(shost), buf); | |
1525 | } | |
ee959b00 | 1526 | static FC_DEVICE_ATTR(host, supported_speeds, S_IRUGO, |
1da177e4 LT |
1527 | show_fc_host_supported_speeds, NULL); |
1528 | ||
1529 | ||
1530 | fc_private_host_rd_attr_cast(node_name, "0x%llx\n", 20, unsigned long long); | |
1531 | fc_private_host_rd_attr_cast(port_name, "0x%llx\n", 20, unsigned long long); | |
6b7281d0 AH |
1532 | fc_private_host_rd_attr_cast(permanent_port_name, "0x%llx\n", 20, |
1533 | unsigned long long); | |
1da177e4 | 1534 | fc_private_host_rd_attr(maxframe_size, "%u bytes\n", 20); |
a53eb5e0 | 1535 | fc_private_host_rd_attr(max_npiv_vports, "%u\n", 20); |
1da177e4 | 1536 | fc_private_host_rd_attr(serial_number, "%s\n", (FC_SERIAL_NUMBER_SIZE +1)); |
bb8ef587 NP |
1537 | fc_private_host_rd_attr(manufacturer, "%s\n", FC_SERIAL_NUMBER_SIZE + 1); |
1538 | fc_private_host_rd_attr(model, "%s\n", FC_SYMBOLIC_NAME_SIZE + 1); | |
1539 | fc_private_host_rd_attr(model_description, "%s\n", FC_SYMBOLIC_NAME_SIZE + 1); | |
1540 | fc_private_host_rd_attr(hardware_version, "%s\n", FC_VERSION_STRING_SIZE + 1); | |
1541 | fc_private_host_rd_attr(driver_version, "%s\n", FC_VERSION_STRING_SIZE + 1); | |
1542 | fc_private_host_rd_attr(firmware_version, "%s\n", FC_VERSION_STRING_SIZE + 1); | |
1543 | fc_private_host_rd_attr(optionrom_version, "%s\n", FC_VERSION_STRING_SIZE + 1); | |
1da177e4 LT |
1544 | |
1545 | ||
1546 | /* Dynamic Host Attributes */ | |
1547 | ||
1548 | static ssize_t | |
ee959b00 TJ |
1549 | show_fc_host_active_fc4s (struct device *dev, |
1550 | struct device_attribute *attr, char *buf) | |
1da177e4 | 1551 | { |
ee959b00 | 1552 | struct Scsi_Host *shost = transport_class_to_shost(dev); |
1da177e4 LT |
1553 | struct fc_internal *i = to_fc_internal(shost->transportt); |
1554 | ||
1555 | if (i->f->get_host_active_fc4s) | |
1556 | i->f->get_host_active_fc4s(shost); | |
1557 | ||
1558 | return (ssize_t)show_fc_fc4s(buf, fc_host_active_fc4s(shost)); | |
1559 | } | |
ee959b00 | 1560 | static FC_DEVICE_ATTR(host, active_fc4s, S_IRUGO, |
1da177e4 LT |
1561 | show_fc_host_active_fc4s, NULL); |
1562 | ||
1563 | static ssize_t | |
ee959b00 TJ |
1564 | show_fc_host_speed (struct device *dev, |
1565 | struct device_attribute *attr, char *buf) | |
1da177e4 | 1566 | { |
ee959b00 | 1567 | struct Scsi_Host *shost = transport_class_to_shost(dev); |
1da177e4 LT |
1568 | struct fc_internal *i = to_fc_internal(shost->transportt); |
1569 | ||
1570 | if (i->f->get_host_speed) | |
1571 | i->f->get_host_speed(shost); | |
1572 | ||
1573 | if (fc_host_speed(shost) == FC_PORTSPEED_UNKNOWN) | |
1574 | return snprintf(buf, 20, "unknown\n"); | |
1575 | ||
1576 | return get_fc_port_speed_names(fc_host_speed(shost), buf); | |
1577 | } | |
ee959b00 | 1578 | static FC_DEVICE_ATTR(host, speed, S_IRUGO, |
1da177e4 LT |
1579 | show_fc_host_speed, NULL); |
1580 | ||
1581 | ||
1582 | fc_host_rd_attr(port_id, "0x%06x\n", 20); | |
1583 | fc_host_rd_enum_attr(port_type, FC_PORTTYPE_MAX_NAMELEN); | |
1584 | fc_host_rd_enum_attr(port_state, FC_PORTSTATE_MAX_NAMELEN); | |
1585 | fc_host_rd_attr_cast(fabric_name, "0x%llx\n", 20, unsigned long long); | |
016131b8 | 1586 | fc_host_rd_attr(symbolic_name, "%s\n", FC_SYMBOLIC_NAME_SIZE + 1); |
1da177e4 | 1587 | |
b8d08210 JS |
1588 | fc_private_host_show_function(system_hostname, "%s\n", |
1589 | FC_SYMBOLIC_NAME_SIZE + 1, ) | |
1590 | fc_host_store_str_function(system_hostname, FC_SYMBOLIC_NAME_SIZE) | |
ee959b00 | 1591 | static FC_DEVICE_ATTR(host, system_hostname, S_IRUGO | S_IWUSR, |
b8d08210 JS |
1592 | show_fc_host_system_hostname, store_fc_host_system_hostname); |
1593 | ||
1da177e4 LT |
1594 | |
1595 | /* Private Host Attributes */ | |
1596 | ||
1597 | static ssize_t | |
ee959b00 TJ |
1598 | show_fc_private_host_tgtid_bind_type(struct device *dev, |
1599 | struct device_attribute *attr, char *buf) | |
1da177e4 | 1600 | { |
ee959b00 | 1601 | struct Scsi_Host *shost = transport_class_to_shost(dev); |
1da177e4 LT |
1602 | const char *name; |
1603 | ||
1604 | name = get_fc_tgtid_bind_type_name(fc_host_tgtid_bind_type(shost)); | |
1605 | if (!name) | |
1606 | return -EINVAL; | |
1607 | return snprintf(buf, FC_BINDTYPE_MAX_NAMELEN, "%s\n", name); | |
1608 | } | |
1609 | ||
d16794f6 JSEC |
1610 | #define get_list_head_entry(pos, head, member) \ |
1611 | pos = list_entry((head)->next, typeof(*pos), member) | |
1612 | ||
1da177e4 | 1613 | static ssize_t |
ee959b00 TJ |
1614 | store_fc_private_host_tgtid_bind_type(struct device *dev, |
1615 | struct device_attribute *attr, const char *buf, size_t count) | |
1da177e4 | 1616 | { |
ee959b00 | 1617 | struct Scsi_Host *shost = transport_class_to_shost(dev); |
d16794f6 | 1618 | struct fc_rport *rport; |
1da177e4 LT |
1619 | enum fc_tgtid_binding_type val; |
1620 | unsigned long flags; | |
1621 | ||
1622 | if (get_fc_tgtid_bind_type_match(buf, &val)) | |
1623 | return -EINVAL; | |
1624 | ||
1625 | /* if changing bind type, purge all unused consistent bindings */ | |
1626 | if (val != fc_host_tgtid_bind_type(shost)) { | |
1627 | spin_lock_irqsave(shost->host_lock, flags); | |
d16794f6 JSEC |
1628 | while (!list_empty(&fc_host_rport_bindings(shost))) { |
1629 | get_list_head_entry(rport, | |
1630 | &fc_host_rport_bindings(shost), peers); | |
aedf3497 JS |
1631 | list_del(&rport->peers); |
1632 | rport->port_state = FC_PORTSTATE_DELETED; | |
1633 | fc_queue_work(shost, &rport->rport_delete_work); | |
d16794f6 | 1634 | } |
1da177e4 LT |
1635 | spin_unlock_irqrestore(shost->host_lock, flags); |
1636 | } | |
1637 | ||
1638 | fc_host_tgtid_bind_type(shost) = val; | |
1639 | return count; | |
1640 | } | |
1641 | ||
ee959b00 | 1642 | static FC_DEVICE_ATTR(host, tgtid_bind_type, S_IRUGO | S_IWUSR, |
1da177e4 LT |
1643 | show_fc_private_host_tgtid_bind_type, |
1644 | store_fc_private_host_tgtid_bind_type); | |
1645 | ||
91ca7b01 | 1646 | static ssize_t |
ee959b00 TJ |
1647 | store_fc_private_host_issue_lip(struct device *dev, |
1648 | struct device_attribute *attr, const char *buf, size_t count) | |
91ca7b01 | 1649 | { |
ee959b00 | 1650 | struct Scsi_Host *shost = transport_class_to_shost(dev); |
91ca7b01 AV |
1651 | struct fc_internal *i = to_fc_internal(shost->transportt); |
1652 | int ret; | |
1653 | ||
1654 | /* ignore any data value written to the attribute */ | |
1655 | if (i->f->issue_fc_host_lip) { | |
1656 | ret = i->f->issue_fc_host_lip(shost); | |
1657 | return ret ? ret: count; | |
1658 | } | |
1659 | ||
1660 | return -ENOENT; | |
1661 | } | |
1662 | ||
ee959b00 | 1663 | static FC_DEVICE_ATTR(host, issue_lip, S_IWUSR, NULL, |
91ca7b01 AV |
1664 | store_fc_private_host_issue_lip); |
1665 | ||
43ca910a MC |
1666 | static ssize_t |
1667 | store_fc_private_host_dev_loss_tmo(struct device *dev, | |
1668 | struct device_attribute *attr, | |
1669 | const char *buf, size_t count) | |
1670 | { | |
1671 | struct Scsi_Host *shost = transport_class_to_shost(dev); | |
1672 | struct fc_host_attrs *fc_host = shost_to_fc_host(shost); | |
1673 | struct fc_rport *rport; | |
1674 | unsigned long val, flags; | |
1675 | int rc; | |
1676 | ||
1677 | rc = fc_str_to_dev_loss(buf, &val); | |
1678 | if (rc) | |
1679 | return rc; | |
1680 | ||
1681 | fc_host_dev_loss_tmo(shost) = val; | |
1682 | spin_lock_irqsave(shost->host_lock, flags); | |
1683 | list_for_each_entry(rport, &fc_host->rports, peers) | |
1684 | fc_rport_set_dev_loss_tmo(rport, val); | |
1685 | spin_unlock_irqrestore(shost->host_lock, flags); | |
1686 | return count; | |
1687 | } | |
a53eb5e0 | 1688 | |
43ca910a MC |
1689 | fc_private_host_show_function(dev_loss_tmo, "%d\n", 20, ); |
1690 | static FC_DEVICE_ATTR(host, dev_loss_tmo, S_IRUGO | S_IWUSR, | |
1691 | show_fc_host_dev_loss_tmo, | |
1692 | store_fc_private_host_dev_loss_tmo); | |
1693 | ||
1694 | fc_private_host_rd_attr(npiv_vports_inuse, "%u\n", 20); | |
a53eb5e0 | 1695 | |
1da177e4 LT |
1696 | /* |
1697 | * Host Statistics Management | |
1698 | */ | |
1699 | ||
134699d2 | 1700 | /* Show a given attribute in the statistics group */ |
1da177e4 | 1701 | static ssize_t |
ee959b00 | 1702 | fc_stat_show(const struct device *dev, char *buf, unsigned long offset) |
1da177e4 | 1703 | { |
ee959b00 | 1704 | struct Scsi_Host *shost = transport_class_to_shost(dev); |
1da177e4 LT |
1705 | struct fc_internal *i = to_fc_internal(shost->transportt); |
1706 | struct fc_host_statistics *stats; | |
1707 | ssize_t ret = -ENOENT; | |
1708 | ||
1709 | if (offset > sizeof(struct fc_host_statistics) || | |
1710 | offset % sizeof(u64) != 0) | |
1711 | WARN_ON(1); | |
1712 | ||
1713 | if (i->f->get_fc_host_stats) { | |
1714 | stats = (i->f->get_fc_host_stats)(shost); | |
1715 | if (stats) | |
1716 | ret = snprintf(buf, 20, "0x%llx\n", | |
1717 | (unsigned long long)*(u64 *)(((u8 *) stats) + offset)); | |
1718 | } | |
1719 | return ret; | |
1720 | } | |
1721 | ||
1722 | ||
1723 | /* generate a read-only statistics attribute */ | |
1724 | #define fc_host_statistic(name) \ | |
ee959b00 TJ |
1725 | static ssize_t show_fcstat_##name(struct device *cd, \ |
1726 | struct device_attribute *attr, \ | |
1727 | char *buf) \ | |
1da177e4 LT |
1728 | { \ |
1729 | return fc_stat_show(cd, buf, \ | |
1730 | offsetof(struct fc_host_statistics, name)); \ | |
1731 | } \ | |
ee959b00 | 1732 | static FC_DEVICE_ATTR(host, name, S_IRUGO, show_fcstat_##name, NULL) |
1da177e4 LT |
1733 | |
1734 | fc_host_statistic(seconds_since_last_reset); | |
1735 | fc_host_statistic(tx_frames); | |
1736 | fc_host_statistic(tx_words); | |
1737 | fc_host_statistic(rx_frames); | |
1738 | fc_host_statistic(rx_words); | |
1739 | fc_host_statistic(lip_count); | |
1740 | fc_host_statistic(nos_count); | |
1741 | fc_host_statistic(error_frames); | |
1742 | fc_host_statistic(dumped_frames); | |
1743 | fc_host_statistic(link_failure_count); | |
1744 | fc_host_statistic(loss_of_sync_count); | |
1745 | fc_host_statistic(loss_of_signal_count); | |
1746 | fc_host_statistic(prim_seq_protocol_err_count); | |
1747 | fc_host_statistic(invalid_tx_word_count); | |
1748 | fc_host_statistic(invalid_crc_count); | |
1749 | fc_host_statistic(fcp_input_requests); | |
1750 | fc_host_statistic(fcp_output_requests); | |
1751 | fc_host_statistic(fcp_control_requests); | |
1752 | fc_host_statistic(fcp_input_megabytes); | |
1753 | fc_host_statistic(fcp_output_megabytes); | |
e58abb0c VD |
1754 | fc_host_statistic(fcp_packet_alloc_failures); |
1755 | fc_host_statistic(fcp_packet_aborts); | |
1756 | fc_host_statistic(fcp_frame_alloc_failures); | |
1757 | fc_host_statistic(fc_no_free_exch); | |
1758 | fc_host_statistic(fc_no_free_exch_xid); | |
1759 | fc_host_statistic(fc_xid_not_found); | |
1760 | fc_host_statistic(fc_xid_busy); | |
1761 | fc_host_statistic(fc_seq_not_found); | |
1762 | fc_host_statistic(fc_non_bls_resp); | |
1da177e4 LT |
1763 | |
1764 | static ssize_t | |
ee959b00 TJ |
1765 | fc_reset_statistics(struct device *dev, struct device_attribute *attr, |
1766 | const char *buf, size_t count) | |
1da177e4 | 1767 | { |
ee959b00 | 1768 | struct Scsi_Host *shost = transport_class_to_shost(dev); |
1da177e4 LT |
1769 | struct fc_internal *i = to_fc_internal(shost->transportt); |
1770 | ||
1771 | /* ignore any data value written to the attribute */ | |
1772 | if (i->f->reset_fc_host_stats) { | |
1773 | i->f->reset_fc_host_stats(shost); | |
1774 | return count; | |
1775 | } | |
1776 | ||
1777 | return -ENOENT; | |
1778 | } | |
ee959b00 | 1779 | static FC_DEVICE_ATTR(host, reset_statistics, S_IWUSR, NULL, |
1da177e4 LT |
1780 | fc_reset_statistics); |
1781 | ||
1da177e4 | 1782 | static struct attribute *fc_statistics_attrs[] = { |
ee959b00 TJ |
1783 | &device_attr_host_seconds_since_last_reset.attr, |
1784 | &device_attr_host_tx_frames.attr, | |
1785 | &device_attr_host_tx_words.attr, | |
1786 | &device_attr_host_rx_frames.attr, | |
1787 | &device_attr_host_rx_words.attr, | |
1788 | &device_attr_host_lip_count.attr, | |
1789 | &device_attr_host_nos_count.attr, | |
1790 | &device_attr_host_error_frames.attr, | |
1791 | &device_attr_host_dumped_frames.attr, | |
1792 | &device_attr_host_link_failure_count.attr, | |
1793 | &device_attr_host_loss_of_sync_count.attr, | |
1794 | &device_attr_host_loss_of_signal_count.attr, | |
1795 | &device_attr_host_prim_seq_protocol_err_count.attr, | |
1796 | &device_attr_host_invalid_tx_word_count.attr, | |
1797 | &device_attr_host_invalid_crc_count.attr, | |
1798 | &device_attr_host_fcp_input_requests.attr, | |
1799 | &device_attr_host_fcp_output_requests.attr, | |
1800 | &device_attr_host_fcp_control_requests.attr, | |
1801 | &device_attr_host_fcp_input_megabytes.attr, | |
1802 | &device_attr_host_fcp_output_megabytes.attr, | |
e58abb0c VD |
1803 | &device_attr_host_fcp_packet_alloc_failures.attr, |
1804 | &device_attr_host_fcp_packet_aborts.attr, | |
1805 | &device_attr_host_fcp_frame_alloc_failures.attr, | |
1806 | &device_attr_host_fc_no_free_exch.attr, | |
1807 | &device_attr_host_fc_no_free_exch_xid.attr, | |
1808 | &device_attr_host_fc_xid_not_found.attr, | |
1809 | &device_attr_host_fc_xid_busy.attr, | |
1810 | &device_attr_host_fc_seq_not_found.attr, | |
1811 | &device_attr_host_fc_non_bls_resp.attr, | |
ee959b00 | 1812 | &device_attr_host_reset_statistics.attr, |
1da177e4 LT |
1813 | NULL |
1814 | }; | |
1815 | ||
1816 | static struct attribute_group fc_statistics_group = { | |
1817 | .name = "statistics", | |
1818 | .attrs = fc_statistics_attrs, | |
1819 | }; | |
1820 | ||
a53eb5e0 JS |
1821 | |
1822 | /* Host Vport Attributes */ | |
1823 | ||
1824 | static int | |
1825 | fc_parse_wwn(const char *ns, u64 *nm) | |
1826 | { | |
1827 | unsigned int i, j; | |
1828 | u8 wwn[8]; | |
1829 | ||
1830 | memset(wwn, 0, sizeof(wwn)); | |
1831 | ||
1832 | /* Validate and store the new name */ | |
1833 | for (i=0, j=0; i < 16; i++) { | |
ecc30990 AS |
1834 | int value; |
1835 | ||
1836 | value = hex_to_bin(*ns++); | |
1837 | if (value >= 0) | |
1838 | j = (j << 4) | value; | |
a53eb5e0 JS |
1839 | else |
1840 | return -EINVAL; | |
1841 | if (i % 2) { | |
1842 | wwn[i/2] = j & 0xff; | |
1843 | j = 0; | |
1844 | } | |
1845 | } | |
1846 | ||
1847 | *nm = wwn_to_u64(wwn); | |
1848 | ||
1849 | return 0; | |
1850 | } | |
1851 | ||
1852 | ||
1853 | /* | |
1854 | * "Short-cut" sysfs variable to create a new vport on a FC Host. | |
1855 | * Input is a string of the form "<WWPN>:<WWNN>". Other attributes | |
1856 | * will default to a NPIV-based FCP_Initiator; The WWNs are specified | |
1857 | * as hex characters, and may *not* contain any prefixes (e.g. 0x, x, etc) | |
1858 | */ | |
1859 | static ssize_t | |
ee959b00 TJ |
1860 | store_fc_host_vport_create(struct device *dev, struct device_attribute *attr, |
1861 | const char *buf, size_t count) | |
a53eb5e0 | 1862 | { |
ee959b00 | 1863 | struct Scsi_Host *shost = transport_class_to_shost(dev); |
a53eb5e0 JS |
1864 | struct fc_vport_identifiers vid; |
1865 | struct fc_vport *vport; | |
1866 | unsigned int cnt=count; | |
1867 | int stat; | |
1868 | ||
1869 | memset(&vid, 0, sizeof(vid)); | |
1870 | ||
1871 | /* count may include a LF at end of string */ | |
1872 | if (buf[cnt-1] == '\n') | |
1873 | cnt--; | |
1874 | ||
1875 | /* validate we have enough characters for WWPN */ | |
1876 | if ((cnt != (16+1+16)) || (buf[16] != ':')) | |
1877 | return -EINVAL; | |
1878 | ||
1879 | stat = fc_parse_wwn(&buf[0], &vid.port_name); | |
1880 | if (stat) | |
1881 | return stat; | |
1882 | ||
1883 | stat = fc_parse_wwn(&buf[17], &vid.node_name); | |
1884 | if (stat) | |
1885 | return stat; | |
1886 | ||
1887 | vid.roles = FC_PORT_ROLE_FCP_INITIATOR; | |
1888 | vid.vport_type = FC_PORTTYPE_NPIV; | |
1889 | /* vid.symbolic_name is already zero/NULL's */ | |
1890 | vid.disable = false; /* always enabled */ | |
1891 | ||
1892 | /* we only allow support on Channel 0 !!! */ | |
a30c3f69 | 1893 | stat = fc_vport_setup(shost, 0, &shost->shost_gendev, &vid, &vport); |
a53eb5e0 JS |
1894 | return stat ? stat : count; |
1895 | } | |
ee959b00 | 1896 | static FC_DEVICE_ATTR(host, vport_create, S_IWUSR, NULL, |
a53eb5e0 JS |
1897 | store_fc_host_vport_create); |
1898 | ||
1899 | ||
1900 | /* | |
1901 | * "Short-cut" sysfs variable to delete a vport on a FC Host. | |
1902 | * Vport is identified by a string containing "<WWPN>:<WWNN>". | |
1903 | * The WWNs are specified as hex characters, and may *not* contain | |
1904 | * any prefixes (e.g. 0x, x, etc) | |
1905 | */ | |
1906 | static ssize_t | |
ee959b00 TJ |
1907 | store_fc_host_vport_delete(struct device *dev, struct device_attribute *attr, |
1908 | const char *buf, size_t count) | |
a53eb5e0 | 1909 | { |
ee959b00 | 1910 | struct Scsi_Host *shost = transport_class_to_shost(dev); |
a53eb5e0 JS |
1911 | struct fc_host_attrs *fc_host = shost_to_fc_host(shost); |
1912 | struct fc_vport *vport; | |
1913 | u64 wwpn, wwnn; | |
1914 | unsigned long flags; | |
1915 | unsigned int cnt=count; | |
1916 | int stat, match; | |
1917 | ||
1918 | /* count may include a LF at end of string */ | |
1919 | if (buf[cnt-1] == '\n') | |
1920 | cnt--; | |
1921 | ||
1922 | /* validate we have enough characters for WWPN */ | |
1923 | if ((cnt != (16+1+16)) || (buf[16] != ':')) | |
1924 | return -EINVAL; | |
1925 | ||
1926 | stat = fc_parse_wwn(&buf[0], &wwpn); | |
1927 | if (stat) | |
1928 | return stat; | |
1929 | ||
1930 | stat = fc_parse_wwn(&buf[17], &wwnn); | |
1931 | if (stat) | |
1932 | return stat; | |
1933 | ||
1934 | spin_lock_irqsave(shost->host_lock, flags); | |
1935 | match = 0; | |
1936 | /* we only allow support on Channel 0 !!! */ | |
1937 | list_for_each_entry(vport, &fc_host->vports, peers) { | |
1938 | if ((vport->channel == 0) && | |
1939 | (vport->port_name == wwpn) && (vport->node_name == wwnn)) { | |
0d9dc7c8 GR |
1940 | if (vport->flags & (FC_VPORT_DEL | FC_VPORT_CREATING)) |
1941 | break; | |
1942 | vport->flags |= FC_VPORT_DELETING; | |
a53eb5e0 JS |
1943 | match = 1; |
1944 | break; | |
1945 | } | |
1946 | } | |
1947 | spin_unlock_irqrestore(shost->host_lock, flags); | |
1948 | ||
1949 | if (!match) | |
1950 | return -ENODEV; | |
1951 | ||
1952 | stat = fc_vport_terminate(vport); | |
1953 | return stat ? stat : count; | |
1954 | } | |
ee959b00 | 1955 | static FC_DEVICE_ATTR(host, vport_delete, S_IWUSR, NULL, |
a53eb5e0 JS |
1956 | store_fc_host_vport_delete); |
1957 | ||
1958 | ||
1da177e4 LT |
1959 | static int fc_host_match(struct attribute_container *cont, |
1960 | struct device *dev) | |
1961 | { | |
1962 | struct Scsi_Host *shost; | |
1963 | struct fc_internal *i; | |
1964 | ||
1965 | if (!scsi_is_host_device(dev)) | |
1966 | return 0; | |
1967 | ||
1968 | shost = dev_to_shost(dev); | |
1969 | if (!shost->transportt || shost->transportt->host_attrs.ac.class | |
1970 | != &fc_host_class.class) | |
1971 | return 0; | |
1972 | ||
1973 | i = to_fc_internal(shost->transportt); | |
1974 | ||
1975 | return &i->t.host_attrs.ac == cont; | |
1976 | } | |
1977 | ||
1978 | static int fc_target_match(struct attribute_container *cont, | |
1979 | struct device *dev) | |
1980 | { | |
1981 | struct Scsi_Host *shost; | |
1982 | struct fc_internal *i; | |
1983 | ||
1984 | if (!scsi_is_target_device(dev)) | |
1985 | return 0; | |
1986 | ||
1987 | shost = dev_to_shost(dev->parent); | |
1988 | if (!shost->transportt || shost->transportt->host_attrs.ac.class | |
1989 | != &fc_host_class.class) | |
1990 | return 0; | |
1991 | ||
1992 | i = to_fc_internal(shost->transportt); | |
1993 | ||
1994 | return &i->t.target_attrs.ac == cont; | |
1995 | } | |
1996 | ||
1997 | static void fc_rport_dev_release(struct device *dev) | |
1998 | { | |
1999 | struct fc_rport *rport = dev_to_rport(dev); | |
2000 | put_device(dev->parent); | |
2001 | kfree(rport); | |
2002 | } | |
2003 | ||
2004 | int scsi_is_fc_rport(const struct device *dev) | |
2005 | { | |
2006 | return dev->release == fc_rport_dev_release; | |
2007 | } | |
2008 | EXPORT_SYMBOL(scsi_is_fc_rport); | |
2009 | ||
2010 | static int fc_rport_match(struct attribute_container *cont, | |
2011 | struct device *dev) | |
2012 | { | |
2013 | struct Scsi_Host *shost; | |
2014 | struct fc_internal *i; | |
2015 | ||
2016 | if (!scsi_is_fc_rport(dev)) | |
2017 | return 0; | |
2018 | ||
2019 | shost = dev_to_shost(dev->parent); | |
2020 | if (!shost->transportt || shost->transportt->host_attrs.ac.class | |
2021 | != &fc_host_class.class) | |
2022 | return 0; | |
2023 | ||
2024 | i = to_fc_internal(shost->transportt); | |
2025 | ||
2026 | return &i->rport_attr_cont.ac == cont; | |
2027 | } | |
2028 | ||
5c44cd2a | 2029 | |
a53eb5e0 JS |
2030 | static void fc_vport_dev_release(struct device *dev) |
2031 | { | |
2032 | struct fc_vport *vport = dev_to_vport(dev); | |
2033 | put_device(dev->parent); /* release kobj parent */ | |
2034 | kfree(vport); | |
2035 | } | |
2036 | ||
62055172 | 2037 | static int scsi_is_fc_vport(const struct device *dev) |
a53eb5e0 JS |
2038 | { |
2039 | return dev->release == fc_vport_dev_release; | |
2040 | } | |
a53eb5e0 JS |
2041 | |
2042 | static int fc_vport_match(struct attribute_container *cont, | |
2043 | struct device *dev) | |
2044 | { | |
2045 | struct fc_vport *vport; | |
2046 | struct Scsi_Host *shost; | |
2047 | struct fc_internal *i; | |
2048 | ||
2049 | if (!scsi_is_fc_vport(dev)) | |
2050 | return 0; | |
2051 | vport = dev_to_vport(dev); | |
2052 | ||
2053 | shost = vport_to_shost(vport); | |
2054 | if (!shost->transportt || shost->transportt->host_attrs.ac.class | |
2055 | != &fc_host_class.class) | |
2056 | return 0; | |
2057 | ||
2058 | i = to_fc_internal(shost->transportt); | |
2059 | return &i->vport_attr_cont.ac == cont; | |
2060 | } | |
2061 | ||
2062 | ||
c829c394 | 2063 | /** |
b6a05c82 | 2064 | * fc_eh_timed_out - FC Transport I/O timeout intercept handler |
c829c394 JS |
2065 | * @scmd: The SCSI command which timed out |
2066 | * | |
2067 | * This routine protects against error handlers getting invoked while a | |
2068 | * rport is in a blocked state, typically due to a temporarily loss of | |
2069 | * connectivity. If the error handlers are allowed to proceed, requests | |
2070 | * to abort i/o, reset the target, etc will likely fail as there is no way | |
2071 | * to communicate with the device to perform the requested function. These | |
2072 | * failures may result in the midlayer taking the device offline, requiring | |
2073 | * manual intervention to restore operation. | |
2074 | * | |
2075 | * This routine, called whenever an i/o times out, validates the state of | |
2076 | * the underlying rport. If the rport is blocked, it returns | |
2077 | * EH_RESET_TIMER, which will continue to reschedule the timeout. | |
2078 | * Eventually, either the device will return, or devloss_tmo will fire, | |
2079 | * and when the timeout then fires, it will be handled normally. | |
2080 | * If the rport is not blocked, normal error handling continues. | |
2081 | * | |
2082 | * Notes: | |
2083 | * This routine assumes no locks are held on entry. | |
eb44820c | 2084 | */ |
b6a05c82 CH |
2085 | enum blk_eh_timer_return |
2086 | fc_eh_timed_out(struct scsi_cmnd *scmd) | |
c829c394 JS |
2087 | { |
2088 | struct fc_rport *rport = starget_to_rport(scsi_target(scmd->device)); | |
2089 | ||
2090 | if (rport->port_state == FC_PORTSTATE_BLOCKED) | |
242f9dcb | 2091 | return BLK_EH_RESET_TIMER; |
c829c394 | 2092 | |
6600593c | 2093 | return BLK_EH_DONE; |
c829c394 | 2094 | } |
b6a05c82 | 2095 | EXPORT_SYMBOL(fc_eh_timed_out); |
c829c394 | 2096 | |
5c44cd2a | 2097 | /* |
bda23253 JS |
2098 | * Called by fc_user_scan to locate an rport on the shost that |
2099 | * matches the channel and target id, and invoke scsi_scan_target() | |
2100 | * on the rport. | |
5c44cd2a | 2101 | */ |
bda23253 | 2102 | static void |
9cb78c16 | 2103 | fc_user_scan_tgt(struct Scsi_Host *shost, uint channel, uint id, u64 lun) |
5c44cd2a JSEC |
2104 | { |
2105 | struct fc_rport *rport; | |
bda23253 JS |
2106 | unsigned long flags; |
2107 | ||
2108 | spin_lock_irqsave(shost->host_lock, flags); | |
5c44cd2a | 2109 | |
e02f3f59 CH |
2110 | list_for_each_entry(rport, &fc_host_rports(shost), peers) { |
2111 | if (rport->scsi_target_id == -1) | |
2112 | continue; | |
5c44cd2a | 2113 | |
0d2fcd9f HR |
2114 | if (rport->port_state != FC_PORTSTATE_ONLINE) |
2115 | continue; | |
2116 | ||
bda23253 JS |
2117 | if ((channel == rport->channel) && |
2118 | (id == rport->scsi_target_id)) { | |
2119 | spin_unlock_irqrestore(shost->host_lock, flags); | |
1d645088 HR |
2120 | scsi_scan_target(&rport->dev, channel, id, lun, |
2121 | SCSI_SCAN_MANUAL); | |
bda23253 | 2122 | return; |
e02f3f59 CH |
2123 | } |
2124 | } | |
2125 | ||
bda23253 JS |
2126 | spin_unlock_irqrestore(shost->host_lock, flags); |
2127 | } | |
2128 | ||
2129 | /* | |
2130 | * Called via sysfs scan routines. Necessary, as the FC transport | |
2131 | * wants to place all target objects below the rport object. So this | |
2132 | * routine must invoke the scsi_scan_target() routine with the rport | |
2133 | * object as the parent. | |
2134 | */ | |
2135 | static int | |
9cb78c16 | 2136 | fc_user_scan(struct Scsi_Host *shost, uint channel, uint id, u64 lun) |
bda23253 JS |
2137 | { |
2138 | uint chlo, chhi; | |
2139 | uint tgtlo, tgthi; | |
2140 | ||
2141 | if (((channel != SCAN_WILD_CARD) && (channel > shost->max_channel)) || | |
2142 | ((id != SCAN_WILD_CARD) && (id >= shost->max_id)) || | |
2143 | ((lun != SCAN_WILD_CARD) && (lun > shost->max_lun))) | |
2144 | return -EINVAL; | |
2145 | ||
2146 | if (channel == SCAN_WILD_CARD) { | |
2147 | chlo = 0; | |
2148 | chhi = shost->max_channel + 1; | |
2149 | } else { | |
2150 | chlo = channel; | |
2151 | chhi = channel + 1; | |
2152 | } | |
2153 | ||
2154 | if (id == SCAN_WILD_CARD) { | |
2155 | tgtlo = 0; | |
2156 | tgthi = shost->max_id; | |
2157 | } else { | |
2158 | tgtlo = id; | |
2159 | tgthi = id + 1; | |
2160 | } | |
2161 | ||
2162 | for ( ; chlo < chhi; chlo++) | |
2163 | for ( ; tgtlo < tgthi; tgtlo++) | |
2164 | fc_user_scan_tgt(shost, chlo, tgtlo, lun); | |
2165 | ||
e02f3f59 | 2166 | return 0; |
5c44cd2a JSEC |
2167 | } |
2168 | ||
1da177e4 LT |
2169 | struct scsi_transport_template * |
2170 | fc_attach_transport(struct fc_function_template *ft) | |
2171 | { | |
1da177e4 | 2172 | int count; |
24669f75 JS |
2173 | struct fc_internal *i = kzalloc(sizeof(struct fc_internal), |
2174 | GFP_KERNEL); | |
1da177e4 LT |
2175 | |
2176 | if (unlikely(!i)) | |
2177 | return NULL; | |
2178 | ||
1da177e4 LT |
2179 | i->t.target_attrs.ac.attrs = &i->starget_attrs[0]; |
2180 | i->t.target_attrs.ac.class = &fc_transport_class.class; | |
2181 | i->t.target_attrs.ac.match = fc_target_match; | |
2182 | i->t.target_size = sizeof(struct fc_starget_attrs); | |
2183 | transport_container_register(&i->t.target_attrs); | |
2184 | ||
2185 | i->t.host_attrs.ac.attrs = &i->host_attrs[0]; | |
2186 | i->t.host_attrs.ac.class = &fc_host_class.class; | |
2187 | i->t.host_attrs.ac.match = fc_host_match; | |
2188 | i->t.host_size = sizeof(struct fc_host_attrs); | |
2189 | if (ft->get_fc_host_stats) | |
2190 | i->t.host_attrs.statistics = &fc_statistics_group; | |
2191 | transport_container_register(&i->t.host_attrs); | |
2192 | ||
2193 | i->rport_attr_cont.ac.attrs = &i->rport_attrs[0]; | |
2194 | i->rport_attr_cont.ac.class = &fc_rport_class.class; | |
2195 | i->rport_attr_cont.ac.match = fc_rport_match; | |
2196 | transport_container_register(&i->rport_attr_cont); | |
2197 | ||
a53eb5e0 JS |
2198 | i->vport_attr_cont.ac.attrs = &i->vport_attrs[0]; |
2199 | i->vport_attr_cont.ac.class = &fc_vport_class.class; | |
2200 | i->vport_attr_cont.ac.match = fc_vport_match; | |
2201 | transport_container_register(&i->vport_attr_cont); | |
2202 | ||
1da177e4 LT |
2203 | i->f = ft; |
2204 | ||
2205 | /* Transport uses the shost workq for scsi scanning */ | |
2206 | i->t.create_work_queue = 1; | |
5c44cd2a | 2207 | |
e02f3f59 | 2208 | i->t.user_scan = fc_user_scan; |
9ef3e4a4 | 2209 | |
1da177e4 LT |
2210 | /* |
2211 | * Setup SCSI Target Attributes. | |
2212 | */ | |
2213 | count = 0; | |
2214 | SETUP_STARGET_ATTRIBUTE_RD(node_name); | |
2215 | SETUP_STARGET_ATTRIBUTE_RD(port_name); | |
2216 | SETUP_STARGET_ATTRIBUTE_RD(port_id); | |
2217 | ||
2218 | BUG_ON(count > FC_STARGET_NUM_ATTRS); | |
2219 | ||
2220 | i->starget_attrs[count] = NULL; | |
2221 | ||
2222 | ||
2223 | /* | |
2224 | * Setup SCSI Host Attributes. | |
2225 | */ | |
2226 | count=0; | |
2227 | SETUP_HOST_ATTRIBUTE_RD(node_name); | |
2228 | SETUP_HOST_ATTRIBUTE_RD(port_name); | |
6b7281d0 | 2229 | SETUP_HOST_ATTRIBUTE_RD(permanent_port_name); |
1da177e4 LT |
2230 | SETUP_HOST_ATTRIBUTE_RD(supported_classes); |
2231 | SETUP_HOST_ATTRIBUTE_RD(supported_fc4s); | |
1da177e4 LT |
2232 | SETUP_HOST_ATTRIBUTE_RD(supported_speeds); |
2233 | SETUP_HOST_ATTRIBUTE_RD(maxframe_size); | |
a53eb5e0 JS |
2234 | if (ft->vport_create) { |
2235 | SETUP_HOST_ATTRIBUTE_RD_NS(max_npiv_vports); | |
2236 | SETUP_HOST_ATTRIBUTE_RD_NS(npiv_vports_inuse); | |
2237 | } | |
1da177e4 | 2238 | SETUP_HOST_ATTRIBUTE_RD(serial_number); |
bb8ef587 NP |
2239 | SETUP_HOST_ATTRIBUTE_RD(manufacturer); |
2240 | SETUP_HOST_ATTRIBUTE_RD(model); | |
2241 | SETUP_HOST_ATTRIBUTE_RD(model_description); | |
2242 | SETUP_HOST_ATTRIBUTE_RD(hardware_version); | |
2243 | SETUP_HOST_ATTRIBUTE_RD(driver_version); | |
2244 | SETUP_HOST_ATTRIBUTE_RD(firmware_version); | |
2245 | SETUP_HOST_ATTRIBUTE_RD(optionrom_version); | |
1da177e4 LT |
2246 | |
2247 | SETUP_HOST_ATTRIBUTE_RD(port_id); | |
2248 | SETUP_HOST_ATTRIBUTE_RD(port_type); | |
2249 | SETUP_HOST_ATTRIBUTE_RD(port_state); | |
2250 | SETUP_HOST_ATTRIBUTE_RD(active_fc4s); | |
2251 | SETUP_HOST_ATTRIBUTE_RD(speed); | |
2252 | SETUP_HOST_ATTRIBUTE_RD(fabric_name); | |
016131b8 | 2253 | SETUP_HOST_ATTRIBUTE_RD(symbolic_name); |
b8d08210 | 2254 | SETUP_HOST_ATTRIBUTE_RW(system_hostname); |
1da177e4 LT |
2255 | |
2256 | /* Transport-managed attributes */ | |
43ca910a | 2257 | SETUP_PRIVATE_HOST_ATTRIBUTE_RW(dev_loss_tmo); |
1da177e4 | 2258 | SETUP_PRIVATE_HOST_ATTRIBUTE_RW(tgtid_bind_type); |
91ca7b01 AV |
2259 | if (ft->issue_fc_host_lip) |
2260 | SETUP_PRIVATE_HOST_ATTRIBUTE_RW(issue_lip); | |
a53eb5e0 JS |
2261 | if (ft->vport_create) |
2262 | SETUP_PRIVATE_HOST_ATTRIBUTE_RW(vport_create); | |
2263 | if (ft->vport_delete) | |
2264 | SETUP_PRIVATE_HOST_ATTRIBUTE_RW(vport_delete); | |
1da177e4 LT |
2265 | |
2266 | BUG_ON(count > FC_HOST_NUM_ATTRS); | |
2267 | ||
2268 | i->host_attrs[count] = NULL; | |
2269 | ||
2270 | /* | |
2271 | * Setup Remote Port Attributes. | |
2272 | */ | |
2273 | count=0; | |
2274 | SETUP_RPORT_ATTRIBUTE_RD(maxframe_size); | |
2275 | SETUP_RPORT_ATTRIBUTE_RD(supported_classes); | |
2276 | SETUP_RPORT_ATTRIBUTE_RW(dev_loss_tmo); | |
2277 | SETUP_PRIVATE_RPORT_ATTRIBUTE_RD(node_name); | |
2278 | SETUP_PRIVATE_RPORT_ATTRIBUTE_RD(port_name); | |
2279 | SETUP_PRIVATE_RPORT_ATTRIBUTE_RD(port_id); | |
2280 | SETUP_PRIVATE_RPORT_ATTRIBUTE_RD(roles); | |
2281 | SETUP_PRIVATE_RPORT_ATTRIBUTE_RD(port_state); | |
2282 | SETUP_PRIVATE_RPORT_ATTRIBUTE_RD(scsi_target_id); | |
fff9d40c | 2283 | SETUP_PRIVATE_RPORT_ATTRIBUTE_RW(fast_io_fail_tmo); |
1da177e4 LT |
2284 | |
2285 | BUG_ON(count > FC_RPORT_NUM_ATTRS); | |
2286 | ||
2287 | i->rport_attrs[count] = NULL; | |
2288 | ||
a53eb5e0 JS |
2289 | /* |
2290 | * Setup Virtual Port Attributes. | |
2291 | */ | |
2292 | count=0; | |
2293 | SETUP_PRIVATE_VPORT_ATTRIBUTE_RD(vport_state); | |
2294 | SETUP_PRIVATE_VPORT_ATTRIBUTE_RD(vport_last_state); | |
2295 | SETUP_PRIVATE_VPORT_ATTRIBUTE_RD(node_name); | |
2296 | SETUP_PRIVATE_VPORT_ATTRIBUTE_RD(port_name); | |
2297 | SETUP_PRIVATE_VPORT_ATTRIBUTE_RD(roles); | |
2298 | SETUP_PRIVATE_VPORT_ATTRIBUTE_RD(vport_type); | |
2299 | SETUP_VPORT_ATTRIBUTE_RW(symbolic_name); | |
2300 | SETUP_VPORT_ATTRIBUTE_WR(vport_delete); | |
2301 | SETUP_VPORT_ATTRIBUTE_WR(vport_disable); | |
2302 | ||
2303 | BUG_ON(count > FC_VPORT_NUM_ATTRS); | |
2304 | ||
2305 | i->vport_attrs[count] = NULL; | |
2306 | ||
1da177e4 LT |
2307 | return &i->t; |
2308 | } | |
2309 | EXPORT_SYMBOL(fc_attach_transport); | |
2310 | ||
2311 | void fc_release_transport(struct scsi_transport_template *t) | |
2312 | { | |
2313 | struct fc_internal *i = to_fc_internal(t); | |
2314 | ||
2315 | transport_container_unregister(&i->t.target_attrs); | |
2316 | transport_container_unregister(&i->t.host_attrs); | |
2317 | transport_container_unregister(&i->rport_attr_cont); | |
a53eb5e0 | 2318 | transport_container_unregister(&i->vport_attr_cont); |
1da177e4 LT |
2319 | |
2320 | kfree(i); | |
2321 | } | |
2322 | EXPORT_SYMBOL(fc_release_transport); | |
2323 | ||
aedf3497 JS |
2324 | /** |
2325 | * fc_queue_work - Queue work to the fc_host workqueue. | |
2326 | * @shost: Pointer to Scsi_Host bound to fc_host. | |
2327 | * @work: Work to queue for execution. | |
2328 | * | |
2329 | * Return value: | |
a0785edf JS |
2330 | * 1 - work queued for execution |
2331 | * 0 - work is already queued | |
2332 | * -EINVAL - work queue doesn't exist | |
eb44820c | 2333 | */ |
aedf3497 JS |
2334 | static int |
2335 | fc_queue_work(struct Scsi_Host *shost, struct work_struct *work) | |
2336 | { | |
2337 | if (unlikely(!fc_host_work_q(shost))) { | |
2338 | printk(KERN_ERR | |
2339 | "ERROR: FC host '%s' attempted to queue work, " | |
2340 | "when no workqueue created.\n", shost->hostt->name); | |
2341 | dump_stack(); | |
2342 | ||
2343 | return -EINVAL; | |
2344 | } | |
2345 | ||
2346 | return queue_work(fc_host_work_q(shost), work); | |
2347 | } | |
2348 | ||
2349 | /** | |
2350 | * fc_flush_work - Flush a fc_host's workqueue. | |
2351 | * @shost: Pointer to Scsi_Host bound to fc_host. | |
eb44820c | 2352 | */ |
aedf3497 JS |
2353 | static void |
2354 | fc_flush_work(struct Scsi_Host *shost) | |
2355 | { | |
2356 | if (!fc_host_work_q(shost)) { | |
2357 | printk(KERN_ERR | |
2358 | "ERROR: FC host '%s' attempted to flush work, " | |
2359 | "when no workqueue created.\n", shost->hostt->name); | |
2360 | dump_stack(); | |
2361 | return; | |
2362 | } | |
2363 | ||
2364 | flush_workqueue(fc_host_work_q(shost)); | |
2365 | } | |
2366 | ||
2367 | /** | |
2368 | * fc_queue_devloss_work - Schedule work for the fc_host devloss workqueue. | |
2369 | * @shost: Pointer to Scsi_Host bound to fc_host. | |
2370 | * @work: Work to queue for execution. | |
2371 | * @delay: jiffies to delay the work queuing | |
2372 | * | |
2373 | * Return value: | |
0f29b966 | 2374 | * 1 on success / 0 already queued / < 0 for error |
eb44820c | 2375 | */ |
aedf3497 | 2376 | static int |
c4028958 | 2377 | fc_queue_devloss_work(struct Scsi_Host *shost, struct delayed_work *work, |
aedf3497 JS |
2378 | unsigned long delay) |
2379 | { | |
2380 | if (unlikely(!fc_host_devloss_work_q(shost))) { | |
2381 | printk(KERN_ERR | |
2382 | "ERROR: FC host '%s' attempted to queue work, " | |
2383 | "when no workqueue created.\n", shost->hostt->name); | |
2384 | dump_stack(); | |
2385 | ||
2386 | return -EINVAL; | |
2387 | } | |
2388 | ||
2389 | return queue_delayed_work(fc_host_devloss_work_q(shost), work, delay); | |
2390 | } | |
2391 | ||
2392 | /** | |
2393 | * fc_flush_devloss - Flush a fc_host's devloss workqueue. | |
2394 | * @shost: Pointer to Scsi_Host bound to fc_host. | |
eb44820c | 2395 | */ |
aedf3497 JS |
2396 | static void |
2397 | fc_flush_devloss(struct Scsi_Host *shost) | |
2398 | { | |
2399 | if (!fc_host_devloss_work_q(shost)) { | |
2400 | printk(KERN_ERR | |
2401 | "ERROR: FC host '%s' attempted to flush work, " | |
2402 | "when no workqueue created.\n", shost->hostt->name); | |
2403 | dump_stack(); | |
2404 | return; | |
2405 | } | |
2406 | ||
2407 | flush_workqueue(fc_host_devloss_work_q(shost)); | |
2408 | } | |
2409 | ||
1da177e4 LT |
2410 | |
2411 | /** | |
eb44820c RL |
2412 | * fc_remove_host - called to terminate any fc_transport-related elements for a scsi host. |
2413 | * @shost: Which &Scsi_Host | |
1da177e4 | 2414 | * |
25985edc | 2415 | * This routine is expected to be called immediately preceding the |
1da177e4 LT |
2416 | * a driver's call to scsi_remove_host(). |
2417 | * | |
2418 | * WARNING: A driver utilizing the fc_transport, which fails to call | |
eb44820c | 2419 | * this routine prior to scsi_remove_host(), will leave dangling |
1da177e4 LT |
2420 | * objects in /sys/class/fc_remote_ports. Access to any of these |
2421 | * objects can result in a system crash !!! | |
2422 | * | |
2423 | * Notes: | |
2424 | * This routine assumes no locks are held on entry. | |
eb44820c | 2425 | */ |
1da177e4 LT |
2426 | void |
2427 | fc_remove_host(struct Scsi_Host *shost) | |
2428 | { | |
a53eb5e0 JS |
2429 | struct fc_vport *vport = NULL, *next_vport = NULL; |
2430 | struct fc_rport *rport = NULL, *next_rport = NULL; | |
aedf3497 JS |
2431 | struct workqueue_struct *work_q; |
2432 | struct fc_host_attrs *fc_host = shost_to_fc_host(shost); | |
a53eb5e0 | 2433 | unsigned long flags; |
a53eb5e0 JS |
2434 | |
2435 | spin_lock_irqsave(shost->host_lock, flags); | |
2436 | ||
2437 | /* Remove any vports */ | |
260f4aed HR |
2438 | list_for_each_entry_safe(vport, next_vport, &fc_host->vports, peers) { |
2439 | vport->flags |= FC_VPORT_DELETING; | |
9ef3e4a4 | 2440 | fc_queue_work(shost, &vport->vport_delete_work); |
260f4aed | 2441 | } |
1da177e4 LT |
2442 | |
2443 | /* Remove any remote ports */ | |
2444 | list_for_each_entry_safe(rport, next_rport, | |
aedf3497 JS |
2445 | &fc_host->rports, peers) { |
2446 | list_del(&rport->peers); | |
2447 | rport->port_state = FC_PORTSTATE_DELETED; | |
2448 | fc_queue_work(shost, &rport->rport_delete_work); | |
2449 | } | |
2450 | ||
1da177e4 | 2451 | list_for_each_entry_safe(rport, next_rport, |
aedf3497 JS |
2452 | &fc_host->rport_bindings, peers) { |
2453 | list_del(&rport->peers); | |
2454 | rport->port_state = FC_PORTSTATE_DELETED; | |
2455 | fc_queue_work(shost, &rport->rport_delete_work); | |
2456 | } | |
2457 | ||
a53eb5e0 JS |
2458 | spin_unlock_irqrestore(shost->host_lock, flags); |
2459 | ||
aedf3497 JS |
2460 | /* flush all scan work items */ |
2461 | scsi_flush_work(shost); | |
2462 | ||
2463 | /* flush all stgt delete, and rport delete work items, then kill it */ | |
2464 | if (fc_host->work_q) { | |
2465 | work_q = fc_host->work_q; | |
2466 | fc_host->work_q = NULL; | |
2467 | destroy_workqueue(work_q); | |
2468 | } | |
2469 | ||
2470 | /* flush all devloss work items, then kill it */ | |
2471 | if (fc_host->devloss_work_q) { | |
2472 | work_q = fc_host->devloss_work_q; | |
2473 | fc_host->devloss_work_q = NULL; | |
2474 | destroy_workqueue(work_q); | |
2475 | } | |
1da177e4 LT |
2476 | } |
2477 | EXPORT_SYMBOL(fc_remove_host); | |
2478 | ||
fff9d40c MC |
2479 | static void fc_terminate_rport_io(struct fc_rport *rport) |
2480 | { | |
2481 | struct Scsi_Host *shost = rport_to_shost(rport); | |
2482 | struct fc_internal *i = to_fc_internal(shost->transportt); | |
2483 | ||
2484 | /* Involve the LLDD if possible to terminate all io on the rport. */ | |
2485 | if (i->f->terminate_rport_io) | |
2486 | i->f->terminate_rport_io(rport); | |
2487 | ||
2488 | /* | |
5d9fb5cc | 2489 | * Must unblock to flush queued IO. scsi-ml will fail incoming reqs. |
fff9d40c | 2490 | */ |
5d9fb5cc | 2491 | scsi_target_unblock(&rport->dev, SDEV_TRANSPORT_OFFLINE); |
fff9d40c | 2492 | } |
aedf3497 JS |
2493 | |
2494 | /** | |
25985edc | 2495 | * fc_starget_delete - called to delete the scsi descendants of an rport |
c4028958 | 2496 | * @work: remote port to be operated on. |
eb44820c RL |
2497 | * |
2498 | * Deletes target and all sdevs. | |
2499 | */ | |
19a7b4ae | 2500 | static void |
c4028958 | 2501 | fc_starget_delete(struct work_struct *work) |
19a7b4ae | 2502 | { |
c4028958 DH |
2503 | struct fc_rport *rport = |
2504 | container_of(work, struct fc_rport, stgt_delete_work); | |
19a7b4ae | 2505 | |
fff9d40c | 2506 | fc_terminate_rport_io(rport); |
19a7b4ae JSEC |
2507 | scsi_remove_target(&rport->dev); |
2508 | } | |
2509 | ||
aedf3497 JS |
2510 | |
2511 | /** | |
2512 | * fc_rport_final_delete - finish rport termination and delete it. | |
c4028958 | 2513 | * @work: remote port to be deleted. |
eb44820c | 2514 | */ |
aedf3497 | 2515 | static void |
c4028958 | 2516 | fc_rport_final_delete(struct work_struct *work) |
aedf3497 | 2517 | { |
c4028958 DH |
2518 | struct fc_rport *rport = |
2519 | container_of(work, struct fc_rport, rport_delete_work); | |
aedf3497 JS |
2520 | struct device *dev = &rport->dev; |
2521 | struct Scsi_Host *shost = rport_to_shost(rport); | |
0f29b966 | 2522 | struct fc_internal *i = to_fc_internal(shost->transportt); |
92740b24 | 2523 | unsigned long flags; |
8798a694 | 2524 | int do_callback = 0; |
aedf3497 | 2525 | |
112f661d NNS |
2526 | fc_terminate_rport_io(rport); |
2527 | ||
aedf3497 | 2528 | /* |
9ef3e4a4 | 2529 | * if a scan is pending, flush the SCSI Host work_q so that |
aedf3497 JS |
2530 | * that we can reclaim the rport scan work element. |
2531 | */ | |
2532 | if (rport->flags & FC_RPORT_SCAN_PENDING) | |
2533 | scsi_flush_work(shost); | |
2534 | ||
92740b24 JS |
2535 | /* |
2536 | * Cancel any outstanding timers. These should really exist | |
2537 | * only when rmmod'ing the LLDD and we're asking for | |
2538 | * immediate termination of the rports | |
2539 | */ | |
2540 | spin_lock_irqsave(shost->host_lock, flags); | |
2541 | if (rport->flags & FC_RPORT_DEVLOSS_PENDING) { | |
2542 | spin_unlock_irqrestore(shost->host_lock, flags); | |
2543 | if (!cancel_delayed_work(&rport->fail_io_work)) | |
2544 | fc_flush_devloss(shost); | |
2545 | if (!cancel_delayed_work(&rport->dev_loss_work)) | |
2546 | fc_flush_devloss(shost); | |
0353e085 | 2547 | cancel_work_sync(&rport->scan_work); |
92740b24 JS |
2548 | spin_lock_irqsave(shost->host_lock, flags); |
2549 | rport->flags &= ~FC_RPORT_DEVLOSS_PENDING; | |
2550 | } | |
2551 | spin_unlock_irqrestore(shost->host_lock, flags); | |
2552 | ||
0f29b966 JS |
2553 | /* Delete SCSI target and sdevs */ |
2554 | if (rport->scsi_target_id != -1) | |
c4028958 | 2555 | fc_starget_delete(&rport->stgt_delete_work); |
92740b24 JS |
2556 | |
2557 | /* | |
2558 | * Notify the driver that the rport is now dead. The LLDD will | |
2559 | * also guarantee that any communication to the rport is terminated | |
4be98c0c JS |
2560 | * |
2561 | * Avoid this call if we already called it when we preserved the | |
2562 | * rport for the binding. | |
92740b24 | 2563 | */ |
8798a694 | 2564 | spin_lock_irqsave(shost->host_lock, flags); |
4be98c0c | 2565 | if (!(rport->flags & FC_RPORT_DEVLOSS_CALLBK_DONE) && |
8798a694 MR |
2566 | (i->f->dev_loss_tmo_callbk)) { |
2567 | rport->flags |= FC_RPORT_DEVLOSS_CALLBK_DONE; | |
2568 | do_callback = 1; | |
2569 | } | |
2570 | spin_unlock_irqrestore(shost->host_lock, flags); | |
2571 | ||
2572 | if (do_callback) | |
0f29b966 | 2573 | i->f->dev_loss_tmo_callbk(rport); |
0f29b966 | 2574 | |
9e4f5e29 JS |
2575 | fc_bsg_remove(rport->rqst_q); |
2576 | ||
aedf3497 JS |
2577 | transport_remove_device(dev); |
2578 | device_del(dev); | |
2579 | transport_destroy_device(dev); | |
4cd38e38 | 2580 | scsi_host_put(shost); /* for fc_host->rport list */ |
3bdad7bd | 2581 | put_device(dev); /* for self-reference */ |
aedf3497 JS |
2582 | } |
2583 | ||
2584 | ||
1da177e4 | 2585 | /** |
558b88fe | 2586 | * fc_remote_port_create - allocates and creates a remote FC port. |
1da177e4 LT |
2587 | * @shost: scsi host the remote port is connected to. |
2588 | * @channel: Channel on shost port connected to. | |
2589 | * @ids: The world wide names, fc address, and FC4 port | |
2590 | * roles for the remote port. | |
2591 | * | |
2592 | * Allocates and creates the remoter port structure, including the | |
2593 | * class and sysfs creation. | |
2594 | * | |
2595 | * Notes: | |
2596 | * This routine assumes no locks are held on entry. | |
eb44820c | 2597 | */ |
44818efb | 2598 | static struct fc_rport * |
558b88fe HR |
2599 | fc_remote_port_create(struct Scsi_Host *shost, int channel, |
2600 | struct fc_rport_identifiers *ids) | |
1da177e4 | 2601 | { |
aedf3497 | 2602 | struct fc_host_attrs *fc_host = shost_to_fc_host(shost); |
1da177e4 LT |
2603 | struct fc_internal *fci = to_fc_internal(shost->transportt); |
2604 | struct fc_rport *rport; | |
2605 | struct device *dev; | |
2606 | unsigned long flags; | |
2607 | int error; | |
2608 | size_t size; | |
2609 | ||
2610 | size = (sizeof(struct fc_rport) + fci->f->dd_fcrport_size); | |
24669f75 | 2611 | rport = kzalloc(size, GFP_KERNEL); |
1da177e4 | 2612 | if (unlikely(!rport)) { |
cadbd4a5 | 2613 | printk(KERN_ERR "%s: allocation failure\n", __func__); |
1da177e4 LT |
2614 | return NULL; |
2615 | } | |
1da177e4 LT |
2616 | |
2617 | rport->maxframe_size = -1; | |
2618 | rport->supported_classes = FC_COS_UNSPECIFIED; | |
43ca910a | 2619 | rport->dev_loss_tmo = fc_host->dev_loss_tmo; |
1da177e4 LT |
2620 | memcpy(&rport->node_name, &ids->node_name, sizeof(rport->node_name)); |
2621 | memcpy(&rport->port_name, &ids->port_name, sizeof(rport->port_name)); | |
2622 | rport->port_id = ids->port_id; | |
2623 | rport->roles = ids->roles; | |
2624 | rport->port_state = FC_PORTSTATE_ONLINE; | |
2625 | if (fci->f->dd_fcrport_size) | |
2626 | rport->dd_data = &rport[1]; | |
2627 | rport->channel = channel; | |
0f29b966 | 2628 | rport->fast_io_fail_tmo = -1; |
1da177e4 | 2629 | |
c4028958 DH |
2630 | INIT_DELAYED_WORK(&rport->dev_loss_work, fc_timeout_deleted_rport); |
2631 | INIT_DELAYED_WORK(&rport->fail_io_work, fc_timeout_fail_rport_io); | |
2632 | INIT_WORK(&rport->scan_work, fc_scsi_scan_rport); | |
2633 | INIT_WORK(&rport->stgt_delete_work, fc_starget_delete); | |
2634 | INIT_WORK(&rport->rport_delete_work, fc_rport_final_delete); | |
1da177e4 LT |
2635 | |
2636 | spin_lock_irqsave(shost->host_lock, flags); | |
2637 | ||
2638 | rport->number = fc_host->next_rport_number++; | |
0c3ae266 CA |
2639 | if ((rport->roles & FC_PORT_ROLE_FCP_TARGET) || |
2640 | (rport->roles & FC_PORT_ROLE_FCP_DUMMY_INITIATOR)) | |
1da177e4 LT |
2641 | rport->scsi_target_id = fc_host->next_target_id++; |
2642 | else | |
2643 | rport->scsi_target_id = -1; | |
aedf3497 | 2644 | list_add_tail(&rport->peers, &fc_host->rports); |
4cd38e38 | 2645 | scsi_host_get(shost); /* for fc_host->rport list */ |
1da177e4 LT |
2646 | |
2647 | spin_unlock_irqrestore(shost->host_lock, flags); | |
2648 | ||
2649 | dev = &rport->dev; | |
3bdad7bd JS |
2650 | device_initialize(dev); /* takes self reference */ |
2651 | dev->parent = get_device(&shost->shost_gendev); /* parent reference */ | |
1da177e4 | 2652 | dev->release = fc_rport_dev_release; |
71610f55 KS |
2653 | dev_set_name(dev, "rport-%d:%d-%d", |
2654 | shost->host_no, channel, rport->number); | |
1da177e4 LT |
2655 | transport_setup_device(dev); |
2656 | ||
2657 | error = device_add(dev); | |
2658 | if (error) { | |
2659 | printk(KERN_ERR "FC Remote Port device_add failed\n"); | |
2660 | goto delete_rport; | |
2661 | } | |
2662 | transport_add_device(dev); | |
2663 | transport_configure_device(dev); | |
2664 | ||
9e4f5e29 JS |
2665 | fc_bsg_rportadd(shost, rport); |
2666 | /* ignore any bsg add error - we just can't do sgio */ | |
2667 | ||
a53eb5e0 | 2668 | if (rport->roles & FC_PORT_ROLE_FCP_TARGET) { |
1da177e4 | 2669 | /* initiate a scan of the target */ |
aedf3497 | 2670 | rport->flags |= FC_RPORT_SCAN_PENDING; |
1da177e4 | 2671 | scsi_queue_work(shost, &rport->scan_work); |
aedf3497 | 2672 | } |
1da177e4 LT |
2673 | |
2674 | return rport; | |
2675 | ||
2676 | delete_rport: | |
2677 | transport_destroy_device(dev); | |
1da177e4 LT |
2678 | spin_lock_irqsave(shost->host_lock, flags); |
2679 | list_del(&rport->peers); | |
4cd38e38 | 2680 | scsi_host_put(shost); /* for fc_host->rport list */ |
1da177e4 LT |
2681 | spin_unlock_irqrestore(shost->host_lock, flags); |
2682 | put_device(dev->parent); | |
2683 | kfree(rport); | |
2684 | return NULL; | |
2685 | } | |
2686 | ||
2687 | /** | |
eb44820c | 2688 | * fc_remote_port_add - notify fc transport of the existence of a remote FC port. |
1da177e4 LT |
2689 | * @shost: scsi host the remote port is connected to. |
2690 | * @channel: Channel on shost port connected to. | |
2691 | * @ids: The world wide names, fc address, and FC4 port | |
2692 | * roles for the remote port. | |
2693 | * | |
2694 | * The LLDD calls this routine to notify the transport of the existence | |
2695 | * of a remote port. The LLDD provides the unique identifiers (wwpn,wwn) | |
2696 | * of the port, it's FC address (port_id), and the FC4 roles that are | |
2697 | * active for the port. | |
2698 | * | |
2699 | * For ports that are FCP targets (aka scsi targets), the FC transport | |
2700 | * maintains consistent target id bindings on behalf of the LLDD. | |
2701 | * A consistent target id binding is an assignment of a target id to | |
2702 | * a remote port identifier, which persists while the scsi host is | |
2703 | * attached. The remote port can disappear, then later reappear, and | |
2704 | * it's target id assignment remains the same. This allows for shifts | |
2705 | * in FC addressing (if binding by wwpn or wwnn) with no apparent | |
2706 | * changes to the scsi subsystem which is based on scsi host number and | |
2707 | * target id values. Bindings are only valid during the attachment of | |
2708 | * the scsi host. If the host detaches, then later re-attaches, target | |
2709 | * id bindings may change. | |
2710 | * | |
2711 | * This routine is responsible for returning a remote port structure. | |
2712 | * The routine will search the list of remote ports it maintains | |
2713 | * internally on behalf of consistent target id mappings. If found, the | |
2714 | * remote port structure will be reused. Otherwise, a new remote port | |
2715 | * structure will be allocated. | |
2716 | * | |
2717 | * Whenever a remote port is allocated, a new fc_remote_port class | |
2718 | * device is created. | |
2719 | * | |
2720 | * Should not be called from interrupt context. | |
2721 | * | |
2722 | * Notes: | |
2723 | * This routine assumes no locks are held on entry. | |
eb44820c | 2724 | */ |
1da177e4 LT |
2725 | struct fc_rport * |
2726 | fc_remote_port_add(struct Scsi_Host *shost, int channel, | |
2727 | struct fc_rport_identifiers *ids) | |
2728 | { | |
19a7b4ae | 2729 | struct fc_internal *fci = to_fc_internal(shost->transportt); |
aedf3497 | 2730 | struct fc_host_attrs *fc_host = shost_to_fc_host(shost); |
1da177e4 LT |
2731 | struct fc_rport *rport; |
2732 | unsigned long flags; | |
2733 | int match = 0; | |
2734 | ||
aedf3497 JS |
2735 | /* ensure any stgt delete functions are done */ |
2736 | fc_flush_work(shost); | |
2737 | ||
19a7b4ae JSEC |
2738 | /* |
2739 | * Search the list of "active" rports, for an rport that has been | |
2740 | * deleted, but we've held off the real delete while the target | |
2741 | * is in a "blocked" state. | |
2742 | */ | |
2743 | spin_lock_irqsave(shost->host_lock, flags); | |
2744 | ||
aedf3497 | 2745 | list_for_each_entry(rport, &fc_host->rports, peers) { |
19a7b4ae | 2746 | |
f091fb8c HR |
2747 | if ((rport->port_state == FC_PORTSTATE_BLOCKED || |
2748 | rport->port_state == FC_PORTSTATE_NOTPRESENT) && | |
19a7b4ae JSEC |
2749 | (rport->channel == channel)) { |
2750 | ||
aedf3497 | 2751 | switch (fc_host->tgtid_bind_type) { |
19a7b4ae JSEC |
2752 | case FC_TGTID_BIND_BY_WWPN: |
2753 | case FC_TGTID_BIND_NONE: | |
2754 | if (rport->port_name == ids->port_name) | |
2755 | match = 1; | |
2756 | break; | |
2757 | case FC_TGTID_BIND_BY_WWNN: | |
2758 | if (rport->node_name == ids->node_name) | |
2759 | match = 1; | |
2760 | break; | |
2761 | case FC_TGTID_BIND_BY_ID: | |
2762 | if (rport->port_id == ids->port_id) | |
2763 | match = 1; | |
2764 | break; | |
2765 | } | |
2766 | ||
2767 | if (match) { | |
19a7b4ae JSEC |
2768 | |
2769 | memcpy(&rport->node_name, &ids->node_name, | |
2770 | sizeof(rport->node_name)); | |
2771 | memcpy(&rport->port_name, &ids->port_name, | |
2772 | sizeof(rport->port_name)); | |
2773 | rport->port_id = ids->port_id; | |
2774 | ||
2775 | rport->port_state = FC_PORTSTATE_ONLINE; | |
2776 | rport->roles = ids->roles; | |
2777 | ||
2778 | spin_unlock_irqrestore(shost->host_lock, flags); | |
2779 | ||
2780 | if (fci->f->dd_fcrport_size) | |
2781 | memset(rport->dd_data, 0, | |
2782 | fci->f->dd_fcrport_size); | |
2783 | ||
2784 | /* | |
92740b24 JS |
2785 | * If we were not a target, cancel the |
2786 | * io terminate and rport timers, and | |
2787 | * we're done. | |
2788 | * | |
2789 | * If we were a target, but our new role | |
2790 | * doesn't indicate a target, leave the | |
2791 | * timers running expecting the role to | |
2792 | * change as the target fully logs in. If | |
2793 | * it doesn't, the target will be torn down. | |
2794 | * | |
2795 | * If we were a target, and our role shows | |
2796 | * we're still a target, cancel the timers | |
2797 | * and kick off a scan. | |
19a7b4ae | 2798 | */ |
19a7b4ae | 2799 | |
92740b24 JS |
2800 | /* was a target, not in roles */ |
2801 | if ((rport->scsi_target_id != -1) && | |
a53eb5e0 | 2802 | (!(ids->roles & FC_PORT_ROLE_FCP_TARGET))) |
92740b24 | 2803 | return rport; |
19a7b4ae JSEC |
2804 | |
2805 | /* | |
92740b24 JS |
2806 | * Stop the fail io and dev_loss timers. |
2807 | * If they flush, the port_state will | |
2808 | * be checked and will NOOP the function. | |
19a7b4ae | 2809 | */ |
0f29b966 JS |
2810 | if (!cancel_delayed_work(&rport->fail_io_work)) |
2811 | fc_flush_devloss(shost); | |
92740b24 | 2812 | if (!cancel_delayed_work(&rport->dev_loss_work)) |
aedf3497 JS |
2813 | fc_flush_devloss(shost); |
2814 | ||
2815 | spin_lock_irqsave(shost->host_lock, flags); | |
2816 | ||
fff9d40c | 2817 | rport->flags &= ~(FC_RPORT_FAST_FAIL_TIMEDOUT | |
4be98c0c JS |
2818 | FC_RPORT_DEVLOSS_PENDING | |
2819 | FC_RPORT_DEVLOSS_CALLBK_DONE); | |
19a7b4ae | 2820 | |
8fb2ef89 MC |
2821 | spin_unlock_irqrestore(shost->host_lock, flags); |
2822 | ||
92740b24 JS |
2823 | /* if target, initiate a scan */ |
2824 | if (rport->scsi_target_id != -1) { | |
5d9fb5cc MC |
2825 | scsi_target_unblock(&rport->dev, |
2826 | SDEV_RUNNING); | |
8fb2ef89 MC |
2827 | spin_lock_irqsave(shost->host_lock, |
2828 | flags); | |
92740b24 JS |
2829 | rport->flags |= FC_RPORT_SCAN_PENDING; |
2830 | scsi_queue_work(shost, | |
2831 | &rport->scan_work); | |
2832 | spin_unlock_irqrestore(shost->host_lock, | |
2833 | flags); | |
8fb2ef89 | 2834 | } |
a0785edf | 2835 | |
9e4f5e29 JS |
2836 | fc_bsg_goose_queue(rport); |
2837 | ||
19a7b4ae JSEC |
2838 | return rport; |
2839 | } | |
2840 | } | |
2841 | } | |
2842 | ||
92740b24 JS |
2843 | /* |
2844 | * Search the bindings array | |
2845 | * Note: if never a FCP target, you won't be on this list | |
2846 | */ | |
aedf3497 | 2847 | if (fc_host->tgtid_bind_type != FC_TGTID_BIND_NONE) { |
1da177e4 LT |
2848 | |
2849 | /* search for a matching consistent binding */ | |
2850 | ||
aedf3497 | 2851 | list_for_each_entry(rport, &fc_host->rport_bindings, |
1da177e4 LT |
2852 | peers) { |
2853 | if (rport->channel != channel) | |
2854 | continue; | |
2855 | ||
aedf3497 | 2856 | switch (fc_host->tgtid_bind_type) { |
1da177e4 LT |
2857 | case FC_TGTID_BIND_BY_WWPN: |
2858 | if (rport->port_name == ids->port_name) | |
2859 | match = 1; | |
2860 | break; | |
2861 | case FC_TGTID_BIND_BY_WWNN: | |
2862 | if (rport->node_name == ids->node_name) | |
2863 | match = 1; | |
2864 | break; | |
2865 | case FC_TGTID_BIND_BY_ID: | |
2866 | if (rport->port_id == ids->port_id) | |
2867 | match = 1; | |
2868 | break; | |
2869 | case FC_TGTID_BIND_NONE: /* to keep compiler happy */ | |
2870 | break; | |
2871 | } | |
2872 | ||
2873 | if (match) { | |
aedf3497 | 2874 | list_move_tail(&rport->peers, &fc_host->rports); |
1da177e4 LT |
2875 | break; |
2876 | } | |
2877 | } | |
2878 | ||
1da177e4 LT |
2879 | if (match) { |
2880 | memcpy(&rport->node_name, &ids->node_name, | |
2881 | sizeof(rport->node_name)); | |
2882 | memcpy(&rport->port_name, &ids->port_name, | |
2883 | sizeof(rport->port_name)); | |
2884 | rport->port_id = ids->port_id; | |
1da177e4 | 2885 | rport->port_state = FC_PORTSTATE_ONLINE; |
fff9d40c | 2886 | rport->flags &= ~FC_RPORT_FAST_FAIL_TIMEDOUT; |
1da177e4 | 2887 | |
19a7b4ae JSEC |
2888 | if (fci->f->dd_fcrport_size) |
2889 | memset(rport->dd_data, 0, | |
2890 | fci->f->dd_fcrport_size); | |
8fb2ef89 MC |
2891 | spin_unlock_irqrestore(shost->host_lock, flags); |
2892 | ||
675195d0 | 2893 | fc_remote_port_rolechg(rport, ids->roles); |
1da177e4 LT |
2894 | return rport; |
2895 | } | |
2896 | } | |
2897 | ||
19a7b4ae JSEC |
2898 | spin_unlock_irqrestore(shost->host_lock, flags); |
2899 | ||
1da177e4 | 2900 | /* No consistent binding found - create new remote port entry */ |
558b88fe | 2901 | rport = fc_remote_port_create(shost, channel, ids); |
1da177e4 LT |
2902 | |
2903 | return rport; | |
2904 | } | |
2905 | EXPORT_SYMBOL(fc_remote_port_add); | |
2906 | ||
1da177e4 LT |
2907 | |
2908 | /** | |
eb44820c | 2909 | * fc_remote_port_delete - notifies the fc transport that a remote port is no longer in existence. |
1da177e4 LT |
2910 | * @rport: The remote port that no longer exists |
2911 | * | |
2912 | * The LLDD calls this routine to notify the transport that a remote | |
2913 | * port is no longer part of the topology. Note: Although a port | |
2914 | * may no longer be part of the topology, it may persist in the remote | |
19a7b4ae | 2915 | * ports displayed by the fc_host. We do this under 2 conditions: |
739aca06 | 2916 | * |
eb44820c | 2917 | * 1) If the port was a scsi target, we delay its deletion by "blocking" it. |
739aca06 MCC |
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. | |
2921 | * | |
eb44820c | 2922 | * 2) If the port was a scsi target and disappears for longer than we |
739aca06 MCC |
2923 | * expect, we'll delete the port and the tear down the SCSI device tree |
2924 | * attached to it. However, we want to semi-persist the target id assigned | |
2925 | * to that port if it eventually does exist. The port structure will | |
2926 | * remain (although with minimal information) so that the target id | |
90311148 | 2927 | * bindings also remain. |
1da177e4 LT |
2928 | * |
2929 | * If the remote port is not an FCP Target, it will be fully torn down | |
2930 | * and deallocated, including the fc_remote_port class device. | |
2931 | * | |
19a7b4ae JSEC |
2932 | * If the remote port is an FCP Target, the port will be placed in a |
2933 | * temporary blocked state. From the LLDD's perspective, the rport no | |
2934 | * longer exists. From the SCSI midlayer's perspective, the SCSI target | |
2935 | * exists, but all sdevs on it are blocked from further I/O. The following | |
eb44820c RL |
2936 | * is then expected. |
2937 | * | |
19a7b4ae JSEC |
2938 | * If the remote port does not return (signaled by a LLDD call to |
2939 | * fc_remote_port_add()) within the dev_loss_tmo timeout, then the | |
2940 | * scsi target is removed - killing all outstanding i/o and removing the | |
134699d2 | 2941 | * scsi devices attached to it. The port structure will be marked Not |
19a7b4ae JSEC |
2942 | * Present and be partially cleared, leaving only enough information to |
2943 | * recognize the remote port relative to the scsi target id binding if | |
2944 | * it later appears. The port will remain as long as there is a valid | |
2945 | * binding (e.g. until the user changes the binding type or unloads the | |
2946 | * scsi host with the binding). | |
1da177e4 | 2947 | * |
19a7b4ae JSEC |
2948 | * If the remote port returns within the dev_loss_tmo value (and matches |
2949 | * according to the target id binding type), the port structure will be | |
2950 | * reused. If it is no longer a SCSI target, the target will be torn | |
2951 | * down. If it continues to be a SCSI target, then the target will be | |
2952 | * unblocked (allowing i/o to be resumed), and a scan will be activated | |
2953 | * to ensure that all luns are detected. | |
2954 | * | |
2955 | * Called from normal process context only - cannot be called from interrupt. | |
1da177e4 LT |
2956 | * |
2957 | * Notes: | |
2958 | * This routine assumes no locks are held on entry. | |
eb44820c | 2959 | */ |
1da177e4 LT |
2960 | void |
2961 | fc_remote_port_delete(struct fc_rport *rport) | |
2962 | { | |
aedf3497 | 2963 | struct Scsi_Host *shost = rport_to_shost(rport); |
36dd288f | 2964 | unsigned long timeout = rport->dev_loss_tmo; |
aedf3497 JS |
2965 | unsigned long flags; |
2966 | ||
2967 | /* | |
2968 | * No need to flush the fc_host work_q's, as all adds are synchronous. | |
2969 | * | |
2970 | * We do need to reclaim the rport scan work element, so eventually | |
2971 | * (in fc_rport_final_delete()) we'll flush the scsi host work_q if | |
2972 | * there's still a scan pending. | |
2973 | */ | |
2974 | ||
2975 | spin_lock_irqsave(shost->host_lock, flags); | |
1da177e4 | 2976 | |
92740b24 | 2977 | if (rport->port_state != FC_PORTSTATE_ONLINE) { |
aedf3497 | 2978 | spin_unlock_irqrestore(shost->host_lock, flags); |
1da177e4 LT |
2979 | return; |
2980 | } | |
2981 | ||
92740b24 JS |
2982 | /* |
2983 | * In the past, we if this was not an FCP-Target, we would | |
2984 | * unconditionally just jump to deleting the rport. | |
2985 | * However, rports can be used as node containers by the LLDD, | |
2986 | * and its not appropriate to just terminate the rport at the | |
2987 | * first sign of a loss in connectivity. The LLDD may want to | |
2988 | * send ELS traffic to re-validate the login. If the rport is | |
2989 | * immediately deleted, it makes it inappropriate for a node | |
2990 | * container. | |
2991 | * So... we now unconditionally wait dev_loss_tmo before | |
2992 | * destroying an rport. | |
2993 | */ | |
2994 | ||
aedf3497 JS |
2995 | rport->port_state = FC_PORTSTATE_BLOCKED; |
2996 | ||
2997 | rport->flags |= FC_RPORT_DEVLOSS_PENDING; | |
2998 | ||
2999 | spin_unlock_irqrestore(shost->host_lock, flags); | |
3000 | ||
19a7b4ae | 3001 | scsi_target_block(&rport->dev); |
1da177e4 | 3002 | |
0f29b966 JS |
3003 | /* see if we need to kill io faster than waiting for device loss */ |
3004 | if ((rport->fast_io_fail_tmo != -1) && | |
fff9d40c | 3005 | (rport->fast_io_fail_tmo < timeout)) |
0f29b966 JS |
3006 | fc_queue_devloss_work(shost, &rport->fail_io_work, |
3007 | rport->fast_io_fail_tmo * HZ); | |
3008 | ||
19a7b4ae | 3009 | /* cap the length the devices can be blocked until they are deleted */ |
aedf3497 | 3010 | fc_queue_devloss_work(shost, &rport->dev_loss_work, timeout * HZ); |
1da177e4 LT |
3011 | } |
3012 | EXPORT_SYMBOL(fc_remote_port_delete); | |
3013 | ||
3014 | /** | |
eb44820c | 3015 | * fc_remote_port_rolechg - notifies the fc transport that the roles on a remote may have changed. |
1da177e4 | 3016 | * @rport: The remote port that changed. |
eb44820c | 3017 | * @roles: New roles for this port. |
1da177e4 | 3018 | * |
eb44820c RL |
3019 | * Description: The LLDD calls this routine to notify the transport that the |
3020 | * roles on a remote port may have changed. The largest effect of this is | |
1da177e4 LT |
3021 | * if a port now becomes a FCP Target, it must be allocated a |
3022 | * scsi target id. If the port is no longer a FCP target, any | |
3023 | * scsi target id value assigned to it will persist in case the | |
3024 | * role changes back to include FCP Target. No changes in the scsi | |
3025 | * midlayer will be invoked if the role changes (in the expectation | |
3026 | * that the role will be resumed. If it doesn't normal error processing | |
3027 | * will take place). | |
3028 | * | |
3029 | * Should not be called from interrupt context. | |
3030 | * | |
3031 | * Notes: | |
3032 | * This routine assumes no locks are held on entry. | |
eb44820c | 3033 | */ |
1da177e4 LT |
3034 | void |
3035 | fc_remote_port_rolechg(struct fc_rport *rport, u32 roles) | |
3036 | { | |
3037 | struct Scsi_Host *shost = rport_to_shost(rport); | |
aedf3497 | 3038 | struct fc_host_attrs *fc_host = shost_to_fc_host(shost); |
1da177e4 LT |
3039 | unsigned long flags; |
3040 | int create = 0; | |
3041 | ||
1da177e4 | 3042 | spin_lock_irqsave(shost->host_lock, flags); |
a53eb5e0 | 3043 | if (roles & FC_PORT_ROLE_FCP_TARGET) { |
19a7b4ae JSEC |
3044 | if (rport->scsi_target_id == -1) { |
3045 | rport->scsi_target_id = fc_host->next_target_id++; | |
3046 | create = 1; | |
a53eb5e0 | 3047 | } else if (!(rport->roles & FC_PORT_ROLE_FCP_TARGET)) |
19a7b4ae | 3048 | create = 1; |
1da177e4 | 3049 | } |
1da177e4 | 3050 | |
19a7b4ae JSEC |
3051 | rport->roles = roles; |
3052 | ||
aedf3497 JS |
3053 | spin_unlock_irqrestore(shost->host_lock, flags); |
3054 | ||
19a7b4ae JSEC |
3055 | if (create) { |
3056 | /* | |
3057 | * There may have been a delete timer running on the | |
3058 | * port. Ensure that it is cancelled as we now know | |
3059 | * the port is an FCP Target. | |
134699d2 | 3060 | * Note: we know the rport exists and is in an online |
19a7b4ae JSEC |
3061 | * state as the LLDD would not have had an rport |
3062 | * reference to pass us. | |
3063 | * | |
3064 | * Take no action on the del_timer failure as the state | |
3065 | * machine state change will validate the | |
3066 | * transaction. | |
3067 | */ | |
0f29b966 JS |
3068 | if (!cancel_delayed_work(&rport->fail_io_work)) |
3069 | fc_flush_devloss(shost); | |
19a7b4ae | 3070 | if (!cancel_delayed_work(&rport->dev_loss_work)) |
aedf3497 JS |
3071 | fc_flush_devloss(shost); |
3072 | ||
3073 | spin_lock_irqsave(shost->host_lock, flags); | |
fff9d40c | 3074 | rport->flags &= ~(FC_RPORT_FAST_FAIL_TIMEDOUT | |
0eecee41 JS |
3075 | FC_RPORT_DEVLOSS_PENDING | |
3076 | FC_RPORT_DEVLOSS_CALLBK_DONE); | |
aedf3497 JS |
3077 | spin_unlock_irqrestore(shost->host_lock, flags); |
3078 | ||
3079 | /* ensure any stgt delete functions are done */ | |
3080 | fc_flush_work(shost); | |
19a7b4ae | 3081 | |
5d9fb5cc | 3082 | scsi_target_unblock(&rport->dev, SDEV_RUNNING); |
1da177e4 | 3083 | /* initiate a scan of the target */ |
aedf3497 JS |
3084 | spin_lock_irqsave(shost->host_lock, flags); |
3085 | rport->flags |= FC_RPORT_SCAN_PENDING; | |
1da177e4 | 3086 | scsi_queue_work(shost, &rport->scan_work); |
aedf3497 | 3087 | spin_unlock_irqrestore(shost->host_lock, flags); |
19a7b4ae | 3088 | } |
1da177e4 LT |
3089 | } |
3090 | EXPORT_SYMBOL(fc_remote_port_rolechg); | |
3091 | ||
3092 | /** | |
eb44820c | 3093 | * fc_timeout_deleted_rport - Timeout handler for a deleted remote port. |
92740b24 | 3094 | * @work: rport target that failed to reappear in the allotted time. |
eb44820c RL |
3095 | * |
3096 | * Description: An attempt to delete a remote port blocks, and if it fails | |
3097 | * to return in the allotted time this gets called. | |
3098 | */ | |
1da177e4 | 3099 | static void |
c4028958 | 3100 | fc_timeout_deleted_rport(struct work_struct *work) |
1da177e4 | 3101 | { |
c4028958 DH |
3102 | struct fc_rport *rport = |
3103 | container_of(work, struct fc_rport, dev_loss_work.work); | |
19a7b4ae | 3104 | struct Scsi_Host *shost = rport_to_shost(rport); |
4be98c0c | 3105 | struct fc_internal *i = to_fc_internal(shost->transportt); |
aedf3497 | 3106 | struct fc_host_attrs *fc_host = shost_to_fc_host(shost); |
19a7b4ae | 3107 | unsigned long flags; |
8798a694 | 3108 | int do_callback = 0; |
1da177e4 | 3109 | |
19a7b4ae | 3110 | spin_lock_irqsave(shost->host_lock, flags); |
1da177e4 | 3111 | |
aedf3497 JS |
3112 | rport->flags &= ~FC_RPORT_DEVLOSS_PENDING; |
3113 | ||
1da177e4 | 3114 | /* |
92740b24 JS |
3115 | * If the port is ONLINE, then it came back. If it was a SCSI |
3116 | * target, validate it still is. If not, tear down the | |
3117 | * scsi_target on it. | |
1da177e4 | 3118 | */ |
aedf3497 | 3119 | if ((rport->port_state == FC_PORTSTATE_ONLINE) && |
92740b24 | 3120 | (rport->scsi_target_id != -1) && |
a53eb5e0 | 3121 | !(rport->roles & FC_PORT_ROLE_FCP_TARGET)) { |
19a7b4ae | 3122 | dev_printk(KERN_ERR, &rport->dev, |
aedf3497 JS |
3123 | "blocked FC remote port time out: no longer" |
3124 | " a FCP target, removing starget\n"); | |
aedf3497 | 3125 | spin_unlock_irqrestore(shost->host_lock, flags); |
5d9fb5cc | 3126 | scsi_target_unblock(&rport->dev, SDEV_TRANSPORT_OFFLINE); |
a0785edf | 3127 | fc_queue_work(shost, &rport->stgt_delete_work); |
19a7b4ae JSEC |
3128 | return; |
3129 | } | |
1da177e4 | 3130 | |
92740b24 | 3131 | /* NOOP state - we're flushing workq's */ |
19a7b4ae JSEC |
3132 | if (rport->port_state != FC_PORTSTATE_BLOCKED) { |
3133 | spin_unlock_irqrestore(shost->host_lock, flags); | |
3134 | dev_printk(KERN_ERR, &rport->dev, | |
92740b24 JS |
3135 | "blocked FC remote port time out: leaving" |
3136 | " rport%s alone\n", | |
3137 | (rport->scsi_target_id != -1) ? " and starget" : ""); | |
19a7b4ae JSEC |
3138 | return; |
3139 | } | |
1da177e4 | 3140 | |
92740b24 JS |
3141 | if ((fc_host->tgtid_bind_type == FC_TGTID_BIND_NONE) || |
3142 | (rport->scsi_target_id == -1)) { | |
aedf3497 JS |
3143 | list_del(&rport->peers); |
3144 | rport->port_state = FC_PORTSTATE_DELETED; | |
19a7b4ae | 3145 | dev_printk(KERN_ERR, &rport->dev, |
92740b24 JS |
3146 | "blocked FC remote port time out: removing" |
3147 | " rport%s\n", | |
3148 | (rport->scsi_target_id != -1) ? " and starget" : ""); | |
aedf3497 JS |
3149 | fc_queue_work(shost, &rport->rport_delete_work); |
3150 | spin_unlock_irqrestore(shost->host_lock, flags); | |
19a7b4ae JSEC |
3151 | return; |
3152 | } | |
1da177e4 | 3153 | |
19a7b4ae JSEC |
3154 | dev_printk(KERN_ERR, &rport->dev, |
3155 | "blocked FC remote port time out: removing target and " | |
3156 | "saving binding\n"); | |
3157 | ||
aedf3497 | 3158 | list_move_tail(&rport->peers, &fc_host->rport_bindings); |
1da177e4 LT |
3159 | |
3160 | /* | |
19a7b4ae JSEC |
3161 | * Note: We do not remove or clear the hostdata area. This allows |
3162 | * host-specific target data to persist along with the | |
3163 | * scsi_target_id. It's up to the host to manage it's hostdata area. | |
1da177e4 | 3164 | */ |
1da177e4 | 3165 | |
19a7b4ae JSEC |
3166 | /* |
3167 | * Reinitialize port attributes that may change if the port comes back. | |
3168 | */ | |
3169 | rport->maxframe_size = -1; | |
3170 | rport->supported_classes = FC_COS_UNSPECIFIED; | |
a53eb5e0 | 3171 | rport->roles = FC_PORT_ROLE_UNKNOWN; |
aedf3497 | 3172 | rport->port_state = FC_PORTSTATE_NOTPRESENT; |
fff9d40c | 3173 | rport->flags &= ~FC_RPORT_FAST_FAIL_TIMEDOUT; |
1da177e4 | 3174 | |
f78badb1 JS |
3175 | /* |
3176 | * Pre-emptively kill I/O rather than waiting for the work queue | |
3177 | * item to teardown the starget. (FCOE libFC folks prefer this | |
3178 | * and to have the rport_port_id still set when it's done). | |
3179 | */ | |
3180 | spin_unlock_irqrestore(shost->host_lock, flags); | |
3181 | fc_terminate_rport_io(rport); | |
3182 | ||
8798a694 MR |
3183 | spin_lock_irqsave(shost->host_lock, flags); |
3184 | ||
3185 | if (rport->port_state == FC_PORTSTATE_NOTPRESENT) { /* still missing */ | |
f78badb1 | 3186 | |
8798a694 MR |
3187 | /* remove the identifiers that aren't used in the consisting binding */ |
3188 | switch (fc_host->tgtid_bind_type) { | |
3189 | case FC_TGTID_BIND_BY_WWPN: | |
3190 | rport->node_name = -1; | |
3191 | rport->port_id = -1; | |
3192 | break; | |
3193 | case FC_TGTID_BIND_BY_WWNN: | |
3194 | rport->port_name = -1; | |
3195 | rport->port_id = -1; | |
3196 | break; | |
3197 | case FC_TGTID_BIND_BY_ID: | |
3198 | rport->node_name = -1; | |
3199 | rport->port_name = -1; | |
3200 | break; | |
3201 | case FC_TGTID_BIND_NONE: /* to keep compiler happy */ | |
3202 | break; | |
3203 | } | |
3204 | ||
3205 | /* | |
3206 | * As this only occurs if the remote port (scsi target) | |
3207 | * went away and didn't come back - we'll remove | |
3208 | * all attached scsi devices. | |
3209 | */ | |
3210 | rport->flags |= FC_RPORT_DEVLOSS_CALLBK_DONE; | |
3211 | fc_queue_work(shost, &rport->stgt_delete_work); | |
3212 | ||
3213 | do_callback = 1; | |
19a7b4ae JSEC |
3214 | } |
3215 | ||
8798a694 | 3216 | spin_unlock_irqrestore(shost->host_lock, flags); |
4be98c0c JS |
3217 | |
3218 | /* | |
3219 | * Notify the driver that the rport is now dead. The LLDD will | |
3220 | * also guarantee that any communication to the rport is terminated | |
3221 | * | |
3222 | * Note: we set the CALLBK_DONE flag above to correspond | |
3223 | */ | |
8798a694 | 3224 | if (do_callback && i->f->dev_loss_tmo_callbk) |
4be98c0c | 3225 | i->f->dev_loss_tmo_callbk(rport); |
1da177e4 | 3226 | } |
1da177e4 | 3227 | |
4be98c0c | 3228 | |
0f29b966 | 3229 | /** |
eb44820c | 3230 | * fc_timeout_fail_rport_io - Timeout handler for a fast io failing on a disconnected SCSI target. |
c4028958 | 3231 | * @work: rport to terminate io on. |
0f29b966 JS |
3232 | * |
3233 | * Notes: Only requests the failure of the io, not that all are flushed | |
3234 | * prior to returning. | |
eb44820c | 3235 | */ |
0f29b966 | 3236 | static void |
c4028958 | 3237 | fc_timeout_fail_rport_io(struct work_struct *work) |
0f29b966 | 3238 | { |
c4028958 DH |
3239 | struct fc_rport *rport = |
3240 | container_of(work, struct fc_rport, fail_io_work.work); | |
0f29b966 JS |
3241 | |
3242 | if (rport->port_state != FC_PORTSTATE_BLOCKED) | |
3243 | return; | |
3244 | ||
fff9d40c MC |
3245 | rport->flags |= FC_RPORT_FAST_FAIL_TIMEDOUT; |
3246 | fc_terminate_rport_io(rport); | |
0f29b966 JS |
3247 | } |
3248 | ||
1da177e4 LT |
3249 | /** |
3250 | * fc_scsi_scan_rport - called to perform a scsi scan on a remote port. | |
c4028958 | 3251 | * @work: remote port to be scanned. |
eb44820c | 3252 | */ |
1da177e4 | 3253 | static void |
c4028958 | 3254 | fc_scsi_scan_rport(struct work_struct *work) |
1da177e4 | 3255 | { |
c4028958 DH |
3256 | struct fc_rport *rport = |
3257 | container_of(work, struct fc_rport, scan_work); | |
aedf3497 | 3258 | struct Scsi_Host *shost = rport_to_shost(rport); |
03f002f7 | 3259 | struct fc_internal *i = to_fc_internal(shost->transportt); |
42e33148 JSEC |
3260 | unsigned long flags; |
3261 | ||
aedf3497 | 3262 | if ((rport->port_state == FC_PORTSTATE_ONLINE) && |
03f002f7 CS |
3263 | (rport->roles & FC_PORT_ROLE_FCP_TARGET) && |
3264 | !(i->f->disable_target_scan)) { | |
aedf3497 | 3265 | scsi_scan_target(&rport->dev, rport->channel, |
1d645088 HR |
3266 | rport->scsi_target_id, SCAN_WILD_CARD, |
3267 | SCSI_SCAN_RESCAN); | |
42e33148 | 3268 | } |
aedf3497 JS |
3269 | |
3270 | spin_lock_irqsave(shost->host_lock, flags); | |
3271 | rport->flags &= ~FC_RPORT_SCAN_PENDING; | |
42e33148 JSEC |
3272 | spin_unlock_irqrestore(shost->host_lock, flags); |
3273 | } | |
3274 | ||
65d430fa | 3275 | /** |
67b46525 SM |
3276 | * fc_block_rport() - Block SCSI eh thread for blocked fc_rport. |
3277 | * @rport: Remote port that scsi_eh is trying to recover. | |
65d430fa CS |
3278 | * |
3279 | * This routine can be called from a FC LLD scsi_eh callback. It | |
3280 | * blocks the scsi_eh thread until the fc_rport leaves the | |
2f2eb587 CS |
3281 | * FC_PORTSTATE_BLOCKED, or the fast_io_fail_tmo fires. This is |
3282 | * necessary to avoid the scsi_eh failing recovery actions for blocked | |
3283 | * rports which would lead to offlined SCSI devices. | |
3284 | * | |
3285 | * Returns: 0 if the fc_rport left the state FC_PORTSTATE_BLOCKED. | |
3286 | * FAST_IO_FAIL if the fast_io_fail_tmo fired, this should be | |
3287 | * passed back to scsi_eh. | |
65d430fa | 3288 | */ |
67b46525 | 3289 | int fc_block_rport(struct fc_rport *rport) |
65d430fa | 3290 | { |
67b46525 | 3291 | struct Scsi_Host *shost = rport_to_shost(rport); |
65d430fa CS |
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 | 3307 | } |
67b46525 SM |
3308 | EXPORT_SYMBOL(fc_block_rport); |
3309 | ||
3310 | /** | |
3311 | * fc_block_scsi_eh - Block SCSI eh thread for blocked fc_rport | |
3312 | * @cmnd: SCSI command that scsi_eh is trying to recover | |
3313 | * | |
3314 | * This routine can be called from a FC LLD scsi_eh callback. It | |
3315 | * blocks the scsi_eh thread until the fc_rport leaves the | |
3316 | * FC_PORTSTATE_BLOCKED, or the fast_io_fail_tmo fires. This is | |
3317 | * necessary to avoid the scsi_eh failing recovery actions for blocked | |
3318 | * rports which would lead to offlined SCSI devices. | |
3319 | * | |
3320 | * Returns: 0 if the fc_rport left the state FC_PORTSTATE_BLOCKED. | |
3321 | * FAST_IO_FAIL if the fast_io_fail_tmo fired, this should be | |
3322 | * passed back to scsi_eh. | |
3323 | */ | |
3324 | int fc_block_scsi_eh(struct scsi_cmnd *cmnd) | |
3325 | { | |
3326 | struct fc_rport *rport = starget_to_rport(scsi_target(cmnd->device)); | |
3327 | ||
8d30371f JT |
3328 | if (WARN_ON_ONCE(!rport)) |
3329 | return FAST_IO_FAIL; | |
3330 | ||
67b46525 SM |
3331 | return fc_block_rport(rport); |
3332 | } | |
65d430fa | 3333 | EXPORT_SYMBOL(fc_block_scsi_eh); |
42e33148 | 3334 | |
a53eb5e0 | 3335 | /** |
a30c3f69 | 3336 | * fc_vport_setup - allocates and creates a FC virtual port. |
a53eb5e0 JS |
3337 | * @shost: scsi host the virtual port is connected to. |
3338 | * @channel: Channel on shost port connected to. | |
3339 | * @pdev: parent device for vport | |
3340 | * @ids: The world wide names, FC4 port roles, etc for | |
3341 | * the virtual port. | |
3342 | * @ret_vport: The pointer to the created vport. | |
3343 | * | |
3344 | * Allocates and creates the vport structure, calls the parent host | |
134699d2 | 3345 | * to instantiate the vport, this completes w/ class and sysfs creation. |
a53eb5e0 JS |
3346 | * |
3347 | * Notes: | |
3348 | * This routine assumes no locks are held on entry. | |
eb44820c | 3349 | */ |
a53eb5e0 | 3350 | static int |
a30c3f69 | 3351 | fc_vport_setup(struct Scsi_Host *shost, int channel, struct device *pdev, |
a53eb5e0 JS |
3352 | struct fc_vport_identifiers *ids, struct fc_vport **ret_vport) |
3353 | { | |
3354 | struct fc_host_attrs *fc_host = shost_to_fc_host(shost); | |
3355 | struct fc_internal *fci = to_fc_internal(shost->transportt); | |
3356 | struct fc_vport *vport; | |
3357 | struct device *dev; | |
3358 | unsigned long flags; | |
3359 | size_t size; | |
3360 | int error; | |
3361 | ||
3362 | *ret_vport = NULL; | |
3363 | ||
3364 | if ( ! fci->f->vport_create) | |
3365 | return -ENOENT; | |
3366 | ||
3367 | size = (sizeof(struct fc_vport) + fci->f->dd_fcvport_size); | |
3368 | vport = kzalloc(size, GFP_KERNEL); | |
3369 | if (unlikely(!vport)) { | |
cadbd4a5 | 3370 | printk(KERN_ERR "%s: allocation failure\n", __func__); |
a53eb5e0 JS |
3371 | return -ENOMEM; |
3372 | } | |
3373 | ||
3374 | vport->vport_state = FC_VPORT_UNKNOWN; | |
3375 | vport->vport_last_state = FC_VPORT_UNKNOWN; | |
3376 | vport->node_name = ids->node_name; | |
3377 | vport->port_name = ids->port_name; | |
3378 | vport->roles = ids->roles; | |
3379 | vport->vport_type = ids->vport_type; | |
3380 | if (fci->f->dd_fcvport_size) | |
3381 | vport->dd_data = &vport[1]; | |
3382 | vport->shost = shost; | |
3383 | vport->channel = channel; | |
3384 | vport->flags = FC_VPORT_CREATING; | |
9ef3e4a4 | 3385 | INIT_WORK(&vport->vport_delete_work, fc_vport_sched_delete); |
a53eb5e0 JS |
3386 | |
3387 | spin_lock_irqsave(shost->host_lock, flags); | |
3388 | ||
3389 | if (fc_host->npiv_vports_inuse >= fc_host->max_npiv_vports) { | |
3390 | spin_unlock_irqrestore(shost->host_lock, flags); | |
3391 | kfree(vport); | |
3392 | return -ENOSPC; | |
3393 | } | |
3394 | fc_host->npiv_vports_inuse++; | |
3395 | vport->number = fc_host->next_vport_number++; | |
3396 | list_add_tail(&vport->peers, &fc_host->vports); | |
4cd38e38 | 3397 | scsi_host_get(shost); /* for fc_host->vport list */ |
a53eb5e0 JS |
3398 | |
3399 | spin_unlock_irqrestore(shost->host_lock, flags); | |
3400 | ||
3401 | dev = &vport->dev; | |
3402 | device_initialize(dev); /* takes self reference */ | |
3403 | dev->parent = get_device(pdev); /* takes parent reference */ | |
3404 | dev->release = fc_vport_dev_release; | |
71610f55 KS |
3405 | dev_set_name(dev, "vport-%d:%d-%d", |
3406 | shost->host_no, channel, vport->number); | |
a53eb5e0 JS |
3407 | transport_setup_device(dev); |
3408 | ||
3409 | error = device_add(dev); | |
3410 | if (error) { | |
3411 | printk(KERN_ERR "FC Virtual Port device_add failed\n"); | |
3412 | goto delete_vport; | |
3413 | } | |
3414 | transport_add_device(dev); | |
3415 | transport_configure_device(dev); | |
3416 | ||
3417 | error = fci->f->vport_create(vport, ids->disable); | |
3418 | if (error) { | |
3419 | printk(KERN_ERR "FC Virtual Port LLDD Create failed\n"); | |
3420 | goto delete_vport_all; | |
3421 | } | |
3422 | ||
3423 | /* | |
3424 | * if the parent isn't the physical adapter's Scsi_Host, ensure | |
134699d2 | 3425 | * the Scsi_Host at least contains a symlink to the vport. |
a53eb5e0 JS |
3426 | */ |
3427 | if (pdev != &shost->shost_gendev) { | |
3428 | error = sysfs_create_link(&shost->shost_gendev.kobj, | |
71610f55 | 3429 | &dev->kobj, dev_name(dev)); |
a53eb5e0 JS |
3430 | if (error) |
3431 | printk(KERN_ERR | |
3432 | "%s: Cannot create vport symlinks for " | |
3433 | "%s, err=%d\n", | |
71610f55 | 3434 | __func__, dev_name(dev), error); |
a53eb5e0 JS |
3435 | } |
3436 | spin_lock_irqsave(shost->host_lock, flags); | |
3437 | vport->flags &= ~FC_VPORT_CREATING; | |
3438 | spin_unlock_irqrestore(shost->host_lock, flags); | |
3439 | ||
3440 | dev_printk(KERN_NOTICE, pdev, | |
71610f55 | 3441 | "%s created via shost%d channel %d\n", dev_name(dev), |
a53eb5e0 JS |
3442 | shost->host_no, channel); |
3443 | ||
3444 | *ret_vport = vport; | |
3445 | ||
3446 | return 0; | |
3447 | ||
3448 | delete_vport_all: | |
3449 | transport_remove_device(dev); | |
3450 | device_del(dev); | |
3451 | delete_vport: | |
3452 | transport_destroy_device(dev); | |
3453 | spin_lock_irqsave(shost->host_lock, flags); | |
3454 | list_del(&vport->peers); | |
4cd38e38 | 3455 | scsi_host_put(shost); /* for fc_host->vport list */ |
a53eb5e0 JS |
3456 | fc_host->npiv_vports_inuse--; |
3457 | spin_unlock_irqrestore(shost->host_lock, flags); | |
3458 | put_device(dev->parent); | |
3459 | kfree(vport); | |
3460 | ||
3461 | return error; | |
3462 | } | |
3463 | ||
a30c3f69 AV |
3464 | /** |
3465 | * fc_vport_create - Admin App or LLDD requests creation of a vport | |
3466 | * @shost: scsi host the virtual port is connected to. | |
3467 | * @channel: channel on shost port connected to. | |
3468 | * @ids: The world wide names, FC4 port roles, etc for | |
3469 | * the virtual port. | |
3470 | * | |
3471 | * Notes: | |
3472 | * This routine assumes no locks are held on entry. | |
3473 | */ | |
3474 | struct fc_vport * | |
3475 | fc_vport_create(struct Scsi_Host *shost, int channel, | |
3476 | struct fc_vport_identifiers *ids) | |
3477 | { | |
3478 | int stat; | |
3479 | struct fc_vport *vport; | |
3480 | ||
3481 | stat = fc_vport_setup(shost, channel, &shost->shost_gendev, | |
3482 | ids, &vport); | |
3483 | return stat ? NULL : vport; | |
3484 | } | |
3485 | EXPORT_SYMBOL(fc_vport_create); | |
a53eb5e0 JS |
3486 | |
3487 | /** | |
3488 | * fc_vport_terminate - Admin App or LLDD requests termination of a vport | |
3489 | * @vport: fc_vport to be terminated | |
3490 | * | |
3491 | * Calls the LLDD vport_delete() function, then deallocates and removes | |
3492 | * the vport from the shost and object tree. | |
3493 | * | |
3494 | * Notes: | |
3495 | * This routine assumes no locks are held on entry. | |
eb44820c | 3496 | */ |
a53eb5e0 JS |
3497 | int |
3498 | fc_vport_terminate(struct fc_vport *vport) | |
3499 | { | |
3500 | struct Scsi_Host *shost = vport_to_shost(vport); | |
3501 | struct fc_host_attrs *fc_host = shost_to_fc_host(shost); | |
3502 | struct fc_internal *i = to_fc_internal(shost->transportt); | |
3503 | struct device *dev = &vport->dev; | |
3504 | unsigned long flags; | |
3505 | int stat; | |
3506 | ||
a53eb5e0 JS |
3507 | if (i->f->vport_delete) |
3508 | stat = i->f->vport_delete(vport); | |
3509 | else | |
3510 | stat = -ENOENT; | |
3511 | ||
3512 | spin_lock_irqsave(shost->host_lock, flags); | |
3513 | vport->flags &= ~FC_VPORT_DELETING; | |
3514 | if (!stat) { | |
3515 | vport->flags |= FC_VPORT_DELETED; | |
3516 | list_del(&vport->peers); | |
3517 | fc_host->npiv_vports_inuse--; | |
4cd38e38 | 3518 | scsi_host_put(shost); /* for fc_host->vport list */ |
a53eb5e0 JS |
3519 | } |
3520 | spin_unlock_irqrestore(shost->host_lock, flags); | |
3521 | ||
3522 | if (stat) | |
3523 | return stat; | |
3524 | ||
3525 | if (dev->parent != &shost->shost_gendev) | |
71610f55 | 3526 | sysfs_remove_link(&shost->shost_gendev.kobj, dev_name(dev)); |
a53eb5e0 JS |
3527 | transport_remove_device(dev); |
3528 | device_del(dev); | |
3529 | transport_destroy_device(dev); | |
3530 | ||
3531 | /* | |
3532 | * Removing our self-reference should mean our | |
3533 | * release function gets called, which will drop the remaining | |
3534 | * parent reference and free the data structure. | |
3535 | */ | |
3536 | put_device(dev); /* for self-reference */ | |
3537 | ||
3538 | return 0; /* SUCCESS */ | |
3539 | } | |
3540 | EXPORT_SYMBOL(fc_vport_terminate); | |
3541 | ||
9ef3e4a4 JS |
3542 | /** |
3543 | * fc_vport_sched_delete - workq-based delete request for a vport | |
9ef3e4a4 | 3544 | * @work: vport to be deleted. |
eb44820c | 3545 | */ |
9ef3e4a4 JS |
3546 | static void |
3547 | fc_vport_sched_delete(struct work_struct *work) | |
3548 | { | |
3549 | struct fc_vport *vport = | |
3550 | container_of(work, struct fc_vport, vport_delete_work); | |
3551 | int stat; | |
3552 | ||
3553 | stat = fc_vport_terminate(vport); | |
3554 | if (stat) | |
3555 | dev_printk(KERN_ERR, vport->dev.parent, | |
3556 | "%s: %s could not be deleted created via " | |
cadbd4a5 | 3557 | "shost%d channel %d - error %d\n", __func__, |
71610f55 | 3558 | dev_name(&vport->dev), vport->shost->host_no, |
9ef3e4a4 JS |
3559 | vport->channel, stat); |
3560 | } | |
3561 | ||
a53eb5e0 | 3562 | |
9e4f5e29 JS |
3563 | /* |
3564 | * BSG support | |
3565 | */ | |
3566 | ||
9e4f5e29 JS |
3567 | /** |
3568 | * fc_bsg_job_timeout - handler for when a bsg request timesout | |
3569 | * @req: request that timed out | |
3570 | */ | |
3571 | static enum blk_eh_timer_return | |
3572 | fc_bsg_job_timeout(struct request *req) | |
3573 | { | |
b468b6a4 | 3574 | struct bsg_job *job = blk_mq_rq_to_pdu(req); |
cd21c605 | 3575 | struct Scsi_Host *shost = fc_bsg_to_shost(job); |
1d69b122 | 3576 | struct fc_rport *rport = fc_bsg_to_rport(job); |
9e4f5e29 | 3577 | struct fc_internal *i = to_fc_internal(shost->transportt); |
ad7660cc | 3578 | int err = 0, inflight = 0; |
9e4f5e29 | 3579 | |
1d69b122 | 3580 | if (rport && rport->port_state == FC_PORTSTATE_BLOCKED) |
9e4f5e29 JS |
3581 | return BLK_EH_RESET_TIMER; |
3582 | ||
fb6f7c8d | 3583 | inflight = bsg_job_get(job); |
9e4f5e29 | 3584 | |
ad7660cc | 3585 | if (inflight && i->f->bsg_timeout) { |
9e4f5e29 JS |
3586 | /* call LLDD to abort the i/o as it has timed out */ |
3587 | err = i->f->bsg_timeout(job); | |
b8f08645 | 3588 | if (err == -EAGAIN) { |
fb6f7c8d | 3589 | bsg_job_put(job); |
b8f08645 SS |
3590 | return BLK_EH_RESET_TIMER; |
3591 | } else if (err) | |
9e4f5e29 JS |
3592 | printk(KERN_ERR "ERROR: FC BSG request timeout - LLD " |
3593 | "abort failed with status %d\n", err); | |
3594 | } | |
3595 | ||
9e4f5e29 | 3596 | /* the blk_end_sync_io() doesn't check the error */ |
1fc2b62e | 3597 | if (inflight) |
cd2f076f | 3598 | blk_mq_end_request(req, BLK_STS_IOERR); |
1fc2b62e | 3599 | return BLK_EH_DONE; |
9e4f5e29 JS |
3600 | } |
3601 | ||
9e4f5e29 JS |
3602 | /** |
3603 | * fc_bsg_host_dispatch - process fc host bsg requests and dispatch to LLDD | |
3604 | * @shost: scsi host rport attached to | |
3605 | * @job: bsg job to be processed | |
3606 | */ | |
a0f4bd7f | 3607 | static int fc_bsg_host_dispatch(struct Scsi_Host *shost, struct bsg_job *job) |
9e4f5e29 JS |
3608 | { |
3609 | struct fc_internal *i = to_fc_internal(shost->transportt); | |
01e0e15c JT |
3610 | struct fc_bsg_request *bsg_request = job->request; |
3611 | struct fc_bsg_reply *bsg_reply = job->reply; | |
9e4f5e29 JS |
3612 | int cmdlen = sizeof(uint32_t); /* start with length of msgcode */ |
3613 | int ret; | |
3614 | ||
01e0e15c JT |
3615 | /* check if we really have all the request data needed */ |
3616 | if (job->request_len < cmdlen) { | |
3617 | ret = -ENOMSG; | |
3618 | goto fail_host_msg; | |
3619 | } | |
3620 | ||
9e4f5e29 | 3621 | /* Validate the host command */ |
01e0e15c | 3622 | switch (bsg_request->msgcode) { |
9e4f5e29 JS |
3623 | case FC_BSG_HST_ADD_RPORT: |
3624 | cmdlen += sizeof(struct fc_bsg_host_add_rport); | |
3625 | break; | |
3626 | ||
3627 | case FC_BSG_HST_DEL_RPORT: | |
3628 | cmdlen += sizeof(struct fc_bsg_host_del_rport); | |
3629 | break; | |
3630 | ||
3631 | case FC_BSG_HST_ELS_NOLOGIN: | |
3632 | cmdlen += sizeof(struct fc_bsg_host_els); | |
3633 | /* there better be a xmt and rcv payloads */ | |
3634 | if ((!job->request_payload.payload_len) || | |
3635 | (!job->reply_payload.payload_len)) { | |
3636 | ret = -EINVAL; | |
3637 | goto fail_host_msg; | |
3638 | } | |
3639 | break; | |
3640 | ||
3641 | case FC_BSG_HST_CT: | |
3642 | cmdlen += sizeof(struct fc_bsg_host_ct); | |
3643 | /* there better be xmt and rcv payloads */ | |
3644 | if ((!job->request_payload.payload_len) || | |
3645 | (!job->reply_payload.payload_len)) { | |
3646 | ret = -EINVAL; | |
3647 | goto fail_host_msg; | |
3648 | } | |
3649 | break; | |
3650 | ||
3651 | case FC_BSG_HST_VENDOR: | |
3652 | cmdlen += sizeof(struct fc_bsg_host_vendor); | |
3653 | if ((shost->hostt->vendor_id == 0L) || | |
01e0e15c | 3654 | (bsg_request->rqst_data.h_vendor.vendor_id != |
9e4f5e29 JS |
3655 | shost->hostt->vendor_id)) { |
3656 | ret = -ESRCH; | |
3657 | goto fail_host_msg; | |
3658 | } | |
3659 | break; | |
3660 | ||
3661 | default: | |
3662 | ret = -EBADR; | |
3663 | goto fail_host_msg; | |
3664 | } | |
3665 | ||
9e4f5e29 JS |
3666 | ret = i->f->bsg_request(job); |
3667 | if (!ret) | |
a0f4bd7f | 3668 | return 0; |
9e4f5e29 JS |
3669 | |
3670 | fail_host_msg: | |
3671 | /* return the errno failure code as the only status */ | |
3672 | BUG_ON(job->reply_len < sizeof(uint32_t)); | |
01e0e15c JT |
3673 | bsg_reply->reply_payload_rcv_len = 0; |
3674 | bsg_reply->result = ret; | |
9e4f5e29 | 3675 | job->reply_len = sizeof(uint32_t); |
06548160 | 3676 | bsg_job_done(job, bsg_reply->result, |
1abaede7 | 3677 | bsg_reply->reply_payload_rcv_len); |
a0f4bd7f | 3678 | return 0; |
9e4f5e29 JS |
3679 | } |
3680 | ||
3681 | ||
3682 | /* | |
3683 | * fc_bsg_goose_queue - restart rport queue in case it was stopped | |
3684 | * @rport: rport to be restarted | |
3685 | */ | |
3686 | static void | |
3687 | fc_bsg_goose_queue(struct fc_rport *rport) | |
3688 | { | |
378eeade | 3689 | struct request_queue *q = rport->rqst_q; |
9e4f5e29 | 3690 | |
cd2f076f JA |
3691 | if (q) |
3692 | blk_mq_run_hw_queues(q, true); | |
9e4f5e29 JS |
3693 | } |
3694 | ||
9e4f5e29 JS |
3695 | /** |
3696 | * fc_bsg_rport_dispatch - process rport bsg requests and dispatch to LLDD | |
3697 | * @shost: scsi host rport attached to | |
9e4f5e29 JS |
3698 | * @job: bsg job to be processed |
3699 | */ | |
a0f4bd7f | 3700 | static int fc_bsg_rport_dispatch(struct Scsi_Host *shost, struct bsg_job *job) |
9e4f5e29 JS |
3701 | { |
3702 | struct fc_internal *i = to_fc_internal(shost->transportt); | |
01e0e15c JT |
3703 | struct fc_bsg_request *bsg_request = job->request; |
3704 | struct fc_bsg_reply *bsg_reply = job->reply; | |
9e4f5e29 JS |
3705 | int cmdlen = sizeof(uint32_t); /* start with length of msgcode */ |
3706 | int ret; | |
3707 | ||
01e0e15c JT |
3708 | /* check if we really have all the request data needed */ |
3709 | if (job->request_len < cmdlen) { | |
3710 | ret = -ENOMSG; | |
3711 | goto fail_rport_msg; | |
3712 | } | |
3713 | ||
9e4f5e29 | 3714 | /* Validate the rport command */ |
01e0e15c | 3715 | switch (bsg_request->msgcode) { |
9e4f5e29 JS |
3716 | case FC_BSG_RPT_ELS: |
3717 | cmdlen += sizeof(struct fc_bsg_rport_els); | |
3718 | goto check_bidi; | |
3719 | ||
3720 | case FC_BSG_RPT_CT: | |
3721 | cmdlen += sizeof(struct fc_bsg_rport_ct); | |
3722 | check_bidi: | |
3723 | /* there better be xmt and rcv payloads */ | |
3724 | if ((!job->request_payload.payload_len) || | |
3725 | (!job->reply_payload.payload_len)) { | |
3726 | ret = -EINVAL; | |
3727 | goto fail_rport_msg; | |
3728 | } | |
3729 | break; | |
3730 | default: | |
3731 | ret = -EBADR; | |
3732 | goto fail_rport_msg; | |
3733 | } | |
3734 | ||
9e4f5e29 JS |
3735 | ret = i->f->bsg_request(job); |
3736 | if (!ret) | |
a0f4bd7f | 3737 | return 0; |
9e4f5e29 JS |
3738 | |
3739 | fail_rport_msg: | |
3740 | /* return the errno failure code as the only status */ | |
3741 | BUG_ON(job->reply_len < sizeof(uint32_t)); | |
01e0e15c JT |
3742 | bsg_reply->reply_payload_rcv_len = 0; |
3743 | bsg_reply->result = ret; | |
9e4f5e29 | 3744 | job->reply_len = sizeof(uint32_t); |
06548160 | 3745 | bsg_job_done(job, bsg_reply->result, |
1abaede7 | 3746 | bsg_reply->reply_payload_rcv_len); |
a0f4bd7f | 3747 | return 0; |
9e4f5e29 JS |
3748 | } |
3749 | ||
a0f4bd7f | 3750 | static int fc_bsg_dispatch(struct bsg_job *job) |
9e4f5e29 | 3751 | { |
a0f4bd7f | 3752 | struct Scsi_Host *shost = fc_bsg_to_shost(job); |
9e4f5e29 | 3753 | |
a0f4bd7f JT |
3754 | if (scsi_is_fc_rport(job->dev)) |
3755 | return fc_bsg_rport_dispatch(shost, job); | |
3756 | else | |
3757 | return fc_bsg_host_dispatch(shost, job); | |
9e4f5e29 JS |
3758 | } |
3759 | ||
cd2f076f JA |
3760 | static blk_status_t fc_bsg_rport_prep(struct fc_rport *rport) |
3761 | { | |
3762 | if (rport->port_state == FC_PORTSTATE_BLOCKED && | |
3763 | !(rport->flags & FC_RPORT_FAST_FAIL_TIMEDOUT)) | |
3764 | return BLK_STS_RESOURCE; | |
3765 | ||
3766 | if (rport->port_state != FC_PORTSTATE_ONLINE) | |
3767 | return BLK_STS_IOERR; | |
3768 | ||
3769 | return BLK_STS_OK; | |
3770 | } | |
3771 | ||
3772 | ||
3773 | static int fc_bsg_dispatch_prep(struct bsg_job *job) | |
3774 | { | |
3775 | struct fc_rport *rport = fc_bsg_to_rport(job); | |
3776 | blk_status_t ret; | |
3777 | ||
3778 | ret = fc_bsg_rport_prep(rport); | |
3779 | switch (ret) { | |
3780 | case BLK_STS_OK: | |
3781 | break; | |
3782 | case BLK_STS_RESOURCE: | |
3783 | return -EAGAIN; | |
3784 | default: | |
3785 | return -EIO; | |
3786 | } | |
3787 | ||
3788 | return fc_bsg_dispatch(job); | |
3789 | } | |
3790 | ||
9e4f5e29 JS |
3791 | /** |
3792 | * fc_bsg_hostadd - Create and add the bsg hooks so we can receive requests | |
3793 | * @shost: shost for fc_host | |
3794 | * @fc_host: fc_host adding the structures to | |
3795 | */ | |
3796 | static int | |
3797 | fc_bsg_hostadd(struct Scsi_Host *shost, struct fc_host_attrs *fc_host) | |
3798 | { | |
3799 | struct device *dev = &shost->shost_gendev; | |
3800 | struct fc_internal *i = to_fc_internal(shost->transportt); | |
3801 | struct request_queue *q; | |
3c559ea8 | 3802 | char bsg_name[20]; |
9e4f5e29 JS |
3803 | |
3804 | fc_host->rqst_q = NULL; | |
3805 | ||
3806 | if (!i->f->bsg_request) | |
3807 | return -ENOTSUPP; | |
3808 | ||
3809 | snprintf(bsg_name, sizeof(bsg_name), | |
3810 | "fc_host%d", shost->host_no); | |
3811 | ||
aae3b069 JA |
3812 | q = bsg_setup_queue(dev, bsg_name, fc_bsg_dispatch, fc_bsg_job_timeout, |
3813 | i->f->dd_bsg_size); | |
8ae94eb6 | 3814 | if (IS_ERR(q)) { |
a0f4bd7f JT |
3815 | dev_err(dev, |
3816 | "fc_host%d: bsg interface failed to initialize - setup queue\n", | |
3817 | shost->host_no); | |
8ae94eb6 | 3818 | return PTR_ERR(q); |
9e4f5e29 | 3819 | } |
8ae94eb6 | 3820 | __scsi_init_queue(shost, q); |
a0f4bd7f | 3821 | blk_queue_rq_timeout(q, FC_DEFAULT_BSG_TIMEOUT); |
9e4f5e29 JS |
3822 | fc_host->rqst_q = q; |
3823 | return 0; | |
3824 | } | |
3825 | ||
9e4f5e29 JS |
3826 | /** |
3827 | * fc_bsg_rportadd - Create and add the bsg hooks so we can receive requests | |
3828 | * @shost: shost that rport is attached to | |
3829 | * @rport: rport that the bsg hooks are being attached to | |
3830 | */ | |
3831 | static int | |
3832 | fc_bsg_rportadd(struct Scsi_Host *shost, struct fc_rport *rport) | |
3833 | { | |
3834 | struct device *dev = &rport->dev; | |
3835 | struct fc_internal *i = to_fc_internal(shost->transportt); | |
3836 | struct request_queue *q; | |
9e4f5e29 JS |
3837 | |
3838 | rport->rqst_q = NULL; | |
3839 | ||
3840 | if (!i->f->bsg_request) | |
3841 | return -ENOTSUPP; | |
3842 | ||
cd2f076f | 3843 | q = bsg_setup_queue(dev, dev_name(dev), fc_bsg_dispatch_prep, |
aae3b069 | 3844 | fc_bsg_job_timeout, i->f->dd_bsg_size); |
8ae94eb6 | 3845 | if (IS_ERR(q)) { |
a0f4bd7f | 3846 | dev_err(dev, "failed to setup bsg queue\n"); |
8ae94eb6 | 3847 | return PTR_ERR(q); |
9e4f5e29 | 3848 | } |
8ae94eb6 | 3849 | __scsi_init_queue(shost, q); |
a0f4bd7f | 3850 | blk_queue_rq_timeout(q, BLK_DEFAULT_SG_TIMEOUT); |
9e4f5e29 JS |
3851 | rport->rqst_q = q; |
3852 | return 0; | |
3853 | } | |
3854 | ||
3855 | ||
3856 | /** | |
3857 | * fc_bsg_remove - Deletes the bsg hooks on fchosts/rports | |
3858 | * @q: the request_queue that is to be torn down. | |
78d16341 JS |
3859 | * |
3860 | * Notes: | |
3861 | * Before unregistering the queue empty any requests that are blocked | |
3862 | * | |
3863 | * | |
9e4f5e29 JS |
3864 | */ |
3865 | static void | |
3866 | fc_bsg_remove(struct request_queue *q) | |
3867 | { | |
5e28b8d8 | 3868 | bsg_remove_queue(q); |
9e4f5e29 JS |
3869 | } |
3870 | ||
3871 | ||
9ef3e4a4 JS |
3872 | /* Original Author: Martin Hicks */ |
3873 | MODULE_AUTHOR("James Smart"); | |
1da177e4 LT |
3874 | MODULE_DESCRIPTION("FC Transport Attributes"); |
3875 | MODULE_LICENSE("GPL"); | |
3876 | ||
3877 | module_init(fc_transport_init); | |
3878 | module_exit(fc_transport_exit); |