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1a59d1b8 | 1 | // SPDX-License-Identifier: GPL-2.0-or-later |
9ef3e4a4 | 2 | /* |
1da177e4 LT |
3 | * FiberChannel transport specific attributes exported to sysfs. |
4 | * | |
5 | * Copyright (c) 2003 Silicon Graphics, Inc. All rights reserved. | |
a53eb5e0 | 6 | * Copyright (C) 2004-2007 James Smart, Emulex Corporation |
1da177e4 LT |
7 | * Rewrite for host, target, device, and remote port attributes, |
8 | * statistics, and service functions... | |
9ef3e4a4 | 9 | * Add vports, etc |
1da177e4 LT |
10 | */ |
11 | #include <linux/module.h> | |
12 | #include <linux/init.h> | |
5a0e3ad6 | 13 | #include <linux/slab.h> |
65d430fa | 14 | #include <linux/delay.h> |
ecc30990 | 15 | #include <linux/kernel.h> |
c00da4c9 | 16 | #include <linux/bsg-lib.h> |
1da177e4 LT |
17 | #include <scsi/scsi_device.h> |
18 | #include <scsi/scsi_host.h> | |
19 | #include <scsi/scsi_transport.h> | |
20 | #include <scsi/scsi_transport_fc.h> | |
c829c394 | 21 | #include <scsi/scsi_cmnd.h> |
84314fd4 JS |
22 | #include <net/netlink.h> |
23 | #include <scsi/scsi_netlink_fc.h> | |
9e4f5e29 | 24 | #include <scsi/scsi_bsg_fc.h> |
1da177e4 LT |
25 | #include "scsi_priv.h" |
26 | ||
aedf3497 | 27 | static int fc_queue_work(struct Scsi_Host *, struct work_struct *); |
9ef3e4a4 | 28 | static void fc_vport_sched_delete(struct work_struct *work); |
a30c3f69 | 29 | static int fc_vport_setup(struct Scsi_Host *shost, int channel, |
a53eb5e0 JS |
30 | struct device *pdev, struct fc_vport_identifiers *ids, |
31 | struct fc_vport **vport); | |
9e4f5e29 JS |
32 | static int fc_bsg_hostadd(struct Scsi_Host *, struct fc_host_attrs *); |
33 | static int fc_bsg_rportadd(struct Scsi_Host *, struct fc_rport *); | |
34 | static void fc_bsg_remove(struct request_queue *); | |
35 | static void fc_bsg_goose_queue(struct fc_rport *); | |
a53eb5e0 | 36 | |
43ca910a MC |
37 | /* |
38 | * Module Parameters | |
39 | */ | |
40 | ||
41 | /* | |
42 | * dev_loss_tmo: the default number of seconds that the FC transport | |
43 | * should insulate the loss of a remote port. | |
44 | * The maximum will be capped by the value of SCSI_DEVICE_BLOCK_MAX_TIMEOUT. | |
45 | */ | |
46 | static unsigned int fc_dev_loss_tmo = 60; /* seconds */ | |
47 | ||
48 | module_param_named(dev_loss_tmo, fc_dev_loss_tmo, uint, S_IRUGO|S_IWUSR); | |
49 | MODULE_PARM_DESC(dev_loss_tmo, | |
50 | "Maximum number of seconds that the FC transport should" | |
51 | " insulate the loss of a remote port. Once this value is" | |
52 | " exceeded, the scsi target is removed. Value should be" | |
53 | " between 1 and SCSI_DEVICE_BLOCK_MAX_TIMEOUT if" | |
54 | " fast_io_fail_tmo is not set."); | |
55 | ||
1da177e4 LT |
56 | /* |
57 | * Redefine so that we can have same named attributes in the | |
58 | * sdev/starget/host objects. | |
59 | */ | |
ee959b00 TJ |
60 | #define FC_DEVICE_ATTR(_prefix,_name,_mode,_show,_store) \ |
61 | struct device_attribute device_attr_##_prefix##_##_name = \ | |
1da177e4 LT |
62 | __ATTR(_name,_mode,_show,_store) |
63 | ||
64 | #define fc_enum_name_search(title, table_type, table) \ | |
65 | static const char *get_fc_##title##_name(enum table_type table_key) \ | |
66 | { \ | |
67 | int i; \ | |
68 | char *name = NULL; \ | |
69 | \ | |
6391a113 | 70 | for (i = 0; i < ARRAY_SIZE(table); i++) { \ |
1da177e4 LT |
71 | if (table[i].value == table_key) { \ |
72 | name = table[i].name; \ | |
73 | break; \ | |
74 | } \ | |
75 | } \ | |
76 | return name; \ | |
77 | } | |
78 | ||
79 | #define fc_enum_name_match(title, table_type, table) \ | |
80 | static int get_fc_##title##_match(const char *table_key, \ | |
81 | enum table_type *value) \ | |
82 | { \ | |
83 | int i; \ | |
84 | \ | |
6391a113 | 85 | for (i = 0; i < ARRAY_SIZE(table); i++) { \ |
1da177e4 LT |
86 | if (strncmp(table_key, table[i].name, \ |
87 | table[i].matchlen) == 0) { \ | |
88 | *value = table[i].value; \ | |
89 | return 0; /* success */ \ | |
90 | } \ | |
91 | } \ | |
92 | return 1; /* failure */ \ | |
93 | } | |
94 | ||
95 | ||
96 | /* Convert fc_port_type values to ascii string name */ | |
97 | static struct { | |
98 | enum fc_port_type value; | |
99 | char *name; | |
100 | } fc_port_type_names[] = { | |
101 | { FC_PORTTYPE_UNKNOWN, "Unknown" }, | |
102 | { FC_PORTTYPE_OTHER, "Other" }, | |
103 | { FC_PORTTYPE_NOTPRESENT, "Not Present" }, | |
104 | { FC_PORTTYPE_NPORT, "NPort (fabric via point-to-point)" }, | |
105 | { FC_PORTTYPE_NLPORT, "NLPort (fabric via loop)" }, | |
106 | { FC_PORTTYPE_LPORT, "LPort (private loop)" }, | |
951948a3 | 107 | { FC_PORTTYPE_PTP, "Point-To-Point (direct nport connection)" }, |
a53eb5e0 | 108 | { FC_PORTTYPE_NPIV, "NPIV VPORT" }, |
1da177e4 LT |
109 | }; |
110 | fc_enum_name_search(port_type, fc_port_type, fc_port_type_names) | |
111 | #define FC_PORTTYPE_MAX_NAMELEN 50 | |
112 | ||
a53eb5e0 JS |
113 | /* Reuse fc_port_type enum function for vport_type */ |
114 | #define get_fc_vport_type_name get_fc_port_type_name | |
115 | ||
1da177e4 | 116 | |
84314fd4 JS |
117 | /* Convert fc_host_event_code values to ascii string name */ |
118 | static const struct { | |
119 | enum fc_host_event_code value; | |
120 | char *name; | |
121 | } fc_host_event_code_names[] = { | |
122 | { FCH_EVT_LIP, "lip" }, | |
123 | { FCH_EVT_LINKUP, "link_up" }, | |
124 | { FCH_EVT_LINKDOWN, "link_down" }, | |
125 | { FCH_EVT_LIPRESET, "lip_reset" }, | |
126 | { FCH_EVT_RSCN, "rscn" }, | |
127 | { FCH_EVT_ADAPTER_CHANGE, "adapter_chg" }, | |
128 | { FCH_EVT_PORT_UNKNOWN, "port_unknown" }, | |
129 | { FCH_EVT_PORT_ONLINE, "port_online" }, | |
130 | { FCH_EVT_PORT_OFFLINE, "port_offline" }, | |
131 | { FCH_EVT_PORT_FABRIC, "port_fabric" }, | |
132 | { FCH_EVT_LINK_UNKNOWN, "link_unknown" }, | |
c39e0af6 | 133 | { FCH_EVT_LINK_FPIN, "link_FPIN" }, |
84314fd4 JS |
134 | { FCH_EVT_VENDOR_UNIQUE, "vendor_unique" }, |
135 | }; | |
136 | fc_enum_name_search(host_event_code, fc_host_event_code, | |
137 | fc_host_event_code_names) | |
138 | #define FC_HOST_EVENT_CODE_MAX_NAMELEN 30 | |
139 | ||
140 | ||
1da177e4 LT |
141 | /* Convert fc_port_state values to ascii string name */ |
142 | static struct { | |
143 | enum fc_port_state value; | |
144 | char *name; | |
145 | } fc_port_state_names[] = { | |
146 | { FC_PORTSTATE_UNKNOWN, "Unknown" }, | |
147 | { FC_PORTSTATE_NOTPRESENT, "Not Present" }, | |
148 | { FC_PORTSTATE_ONLINE, "Online" }, | |
149 | { FC_PORTSTATE_OFFLINE, "Offline" }, | |
150 | { FC_PORTSTATE_BLOCKED, "Blocked" }, | |
151 | { FC_PORTSTATE_BYPASSED, "Bypassed" }, | |
152 | { FC_PORTSTATE_DIAGNOSTICS, "Diagnostics" }, | |
153 | { FC_PORTSTATE_LINKDOWN, "Linkdown" }, | |
154 | { FC_PORTSTATE_ERROR, "Error" }, | |
155 | { FC_PORTSTATE_LOOPBACK, "Loopback" }, | |
42e33148 | 156 | { FC_PORTSTATE_DELETED, "Deleted" }, |
1da177e4 LT |
157 | }; |
158 | fc_enum_name_search(port_state, fc_port_state, fc_port_state_names) | |
159 | #define FC_PORTSTATE_MAX_NAMELEN 20 | |
160 | ||
161 | ||
a53eb5e0 JS |
162 | /* Convert fc_vport_state values to ascii string name */ |
163 | static struct { | |
164 | enum fc_vport_state value; | |
165 | char *name; | |
166 | } fc_vport_state_names[] = { | |
167 | { FC_VPORT_UNKNOWN, "Unknown" }, | |
168 | { FC_VPORT_ACTIVE, "Active" }, | |
169 | { FC_VPORT_DISABLED, "Disabled" }, | |
170 | { FC_VPORT_LINKDOWN, "Linkdown" }, | |
171 | { FC_VPORT_INITIALIZING, "Initializing" }, | |
172 | { FC_VPORT_NO_FABRIC_SUPP, "No Fabric Support" }, | |
173 | { FC_VPORT_NO_FABRIC_RSCS, "No Fabric Resources" }, | |
174 | { FC_VPORT_FABRIC_LOGOUT, "Fabric Logout" }, | |
175 | { FC_VPORT_FABRIC_REJ_WWN, "Fabric Rejected WWN" }, | |
176 | { FC_VPORT_FAILED, "VPort Failed" }, | |
177 | }; | |
178 | fc_enum_name_search(vport_state, fc_vport_state, fc_vport_state_names) | |
179 | #define FC_VPORTSTATE_MAX_NAMELEN 24 | |
180 | ||
181 | /* Reuse fc_vport_state enum function for vport_last_state */ | |
182 | #define get_fc_vport_last_state_name get_fc_vport_state_name | |
183 | ||
184 | ||
1da177e4 | 185 | /* Convert fc_tgtid_binding_type values to ascii string name */ |
0ad78200 | 186 | static const struct { |
1da177e4 LT |
187 | enum fc_tgtid_binding_type value; |
188 | char *name; | |
189 | int matchlen; | |
190 | } fc_tgtid_binding_type_names[] = { | |
191 | { FC_TGTID_BIND_NONE, "none", 4 }, | |
192 | { FC_TGTID_BIND_BY_WWPN, "wwpn (World Wide Port Name)", 4 }, | |
193 | { FC_TGTID_BIND_BY_WWNN, "wwnn (World Wide Node Name)", 4 }, | |
194 | { FC_TGTID_BIND_BY_ID, "port_id (FC Address)", 7 }, | |
195 | }; | |
196 | fc_enum_name_search(tgtid_bind_type, fc_tgtid_binding_type, | |
197 | fc_tgtid_binding_type_names) | |
198 | fc_enum_name_match(tgtid_bind_type, fc_tgtid_binding_type, | |
199 | fc_tgtid_binding_type_names) | |
200 | #define FC_BINDTYPE_MAX_NAMELEN 30 | |
201 | ||
202 | ||
203 | #define fc_bitfield_name_search(title, table) \ | |
204 | static ssize_t \ | |
205 | get_fc_##title##_names(u32 table_key, char *buf) \ | |
206 | { \ | |
207 | char *prefix = ""; \ | |
208 | ssize_t len = 0; \ | |
209 | int i; \ | |
210 | \ | |
6391a113 | 211 | for (i = 0; i < ARRAY_SIZE(table); i++) { \ |
1da177e4 LT |
212 | if (table[i].value & table_key) { \ |
213 | len += sprintf(buf + len, "%s%s", \ | |
214 | prefix, table[i].name); \ | |
215 | prefix = ", "; \ | |
216 | } \ | |
217 | } \ | |
218 | len += sprintf(buf + len, "\n"); \ | |
219 | return len; \ | |
220 | } | |
221 | ||
222 | ||
223 | /* Convert FC_COS bit values to ascii string name */ | |
0ad78200 | 224 | static const struct { |
1da177e4 LT |
225 | u32 value; |
226 | char *name; | |
227 | } fc_cos_names[] = { | |
228 | { FC_COS_CLASS1, "Class 1" }, | |
229 | { FC_COS_CLASS2, "Class 2" }, | |
230 | { FC_COS_CLASS3, "Class 3" }, | |
231 | { FC_COS_CLASS4, "Class 4" }, | |
232 | { FC_COS_CLASS6, "Class 6" }, | |
233 | }; | |
234 | fc_bitfield_name_search(cos, fc_cos_names) | |
235 | ||
236 | ||
237 | /* Convert FC_PORTSPEED bit values to ascii string name */ | |
0ad78200 | 238 | static const struct { |
1da177e4 LT |
239 | u32 value; |
240 | char *name; | |
241 | } fc_port_speed_names[] = { | |
242 | { FC_PORTSPEED_1GBIT, "1 Gbit" }, | |
243 | { FC_PORTSPEED_2GBIT, "2 Gbit" }, | |
244 | { FC_PORTSPEED_4GBIT, "4 Gbit" }, | |
245 | { FC_PORTSPEED_10GBIT, "10 Gbit" }, | |
c3d2350a JS |
246 | { FC_PORTSPEED_8GBIT, "8 Gbit" }, |
247 | { FC_PORTSPEED_16GBIT, "16 Gbit" }, | |
624f28be | 248 | { FC_PORTSPEED_32GBIT, "32 Gbit" }, |
c21a2c1a DK |
249 | { FC_PORTSPEED_20GBIT, "20 Gbit" }, |
250 | { FC_PORTSPEED_40GBIT, "40 Gbit" }, | |
251 | { FC_PORTSPEED_50GBIT, "50 Gbit" }, | |
252 | { FC_PORTSPEED_100GBIT, "100 Gbit" }, | |
c749e6bc | 253 | { FC_PORTSPEED_25GBIT, "25 Gbit" }, |
cc019a5a JS |
254 | { FC_PORTSPEED_64GBIT, "64 Gbit" }, |
255 | { FC_PORTSPEED_128GBIT, "128 Gbit" }, | |
1da177e4 LT |
256 | { FC_PORTSPEED_NOT_NEGOTIATED, "Not Negotiated" }, |
257 | }; | |
258 | fc_bitfield_name_search(port_speed, fc_port_speed_names) | |
259 | ||
260 | ||
261 | static int | |
262 | show_fc_fc4s (char *buf, u8 *fc4_list) | |
263 | { | |
264 | int i, len=0; | |
265 | ||
266 | for (i = 0; i < FC_FC4_LIST_SIZE; i++, fc4_list++) | |
267 | len += sprintf(buf + len , "0x%02x ", *fc4_list); | |
268 | len += sprintf(buf + len, "\n"); | |
269 | return len; | |
270 | } | |
271 | ||
272 | ||
a53eb5e0 | 273 | /* Convert FC_PORT_ROLE bit values to ascii string name */ |
0ad78200 | 274 | static const struct { |
1da177e4 LT |
275 | u32 value; |
276 | char *name; | |
a53eb5e0 | 277 | } fc_port_role_names[] = { |
0c3ae266 CA |
278 | { FC_PORT_ROLE_FCP_TARGET, "FCP Target" }, |
279 | { FC_PORT_ROLE_FCP_INITIATOR, "FCP Initiator" }, | |
280 | { FC_PORT_ROLE_IP_PORT, "IP Port" }, | |
281 | { FC_PORT_ROLE_FCP_DUMMY_INITIATOR, "FCP Dummy Initiator" }, | |
a6a6d058 HR |
282 | { FC_PORT_ROLE_NVME_INITIATOR, "NVMe Initiator" }, |
283 | { FC_PORT_ROLE_NVME_TARGET, "NVMe Target" }, | |
284 | { FC_PORT_ROLE_NVME_DISCOVERY, "NVMe Discovery" }, | |
1da177e4 | 285 | }; |
a53eb5e0 | 286 | fc_bitfield_name_search(port_roles, fc_port_role_names) |
1da177e4 LT |
287 | |
288 | /* | |
289 | * Define roles that are specific to port_id. Values are relative to ROLE_MASK. | |
290 | */ | |
291 | #define FC_WELLKNOWN_PORTID_MASK 0xfffff0 | |
292 | #define FC_WELLKNOWN_ROLE_MASK 0x00000f | |
293 | #define FC_FPORT_PORTID 0x00000e | |
294 | #define FC_FABCTLR_PORTID 0x00000d | |
295 | #define FC_DIRSRVR_PORTID 0x00000c | |
296 | #define FC_TIMESRVR_PORTID 0x00000b | |
297 | #define FC_MGMTSRVR_PORTID 0x00000a | |
298 | ||
299 | ||
c4028958 DH |
300 | static void fc_timeout_deleted_rport(struct work_struct *work); |
301 | static void fc_timeout_fail_rport_io(struct work_struct *work); | |
302 | static void fc_scsi_scan_rport(struct work_struct *work); | |
1da177e4 LT |
303 | |
304 | /* | |
305 | * Attribute counts pre object type... | |
306 | * Increase these values if you add attributes | |
307 | */ | |
308 | #define FC_STARGET_NUM_ATTRS 3 | |
0f29b966 | 309 | #define FC_RPORT_NUM_ATTRS 10 |
a53eb5e0 | 310 | #define FC_VPORT_NUM_ATTRS 9 |
bb8ef587 | 311 | #define FC_HOST_NUM_ATTRS 29 |
1da177e4 LT |
312 | |
313 | struct fc_internal { | |
314 | struct scsi_transport_template t; | |
315 | struct fc_function_template *f; | |
316 | ||
317 | /* | |
318 | * For attributes : each object has : | |
319 | * An array of the actual attributes structures | |
320 | * An array of null-terminated pointers to the attribute | |
321 | * structures - used for mid-layer interaction. | |
322 | * | |
323 | * The attribute containers for the starget and host are are | |
324 | * part of the midlayer. As the remote port is specific to the | |
325 | * fc transport, we must provide the attribute container. | |
326 | */ | |
ee959b00 | 327 | struct device_attribute private_starget_attrs[ |
1da177e4 | 328 | FC_STARGET_NUM_ATTRS]; |
ee959b00 | 329 | struct device_attribute *starget_attrs[FC_STARGET_NUM_ATTRS + 1]; |
1da177e4 | 330 | |
ee959b00 TJ |
331 | struct device_attribute private_host_attrs[FC_HOST_NUM_ATTRS]; |
332 | struct device_attribute *host_attrs[FC_HOST_NUM_ATTRS + 1]; | |
1da177e4 LT |
333 | |
334 | struct transport_container rport_attr_cont; | |
ee959b00 TJ |
335 | struct device_attribute private_rport_attrs[FC_RPORT_NUM_ATTRS]; |
336 | struct device_attribute *rport_attrs[FC_RPORT_NUM_ATTRS + 1]; | |
a53eb5e0 JS |
337 | |
338 | struct transport_container vport_attr_cont; | |
ee959b00 TJ |
339 | struct device_attribute private_vport_attrs[FC_VPORT_NUM_ATTRS]; |
340 | struct device_attribute *vport_attrs[FC_VPORT_NUM_ATTRS + 1]; | |
1da177e4 LT |
341 | }; |
342 | ||
343 | #define to_fc_internal(tmpl) container_of(tmpl, struct fc_internal, t) | |
344 | ||
d0a7e574 | 345 | static int fc_target_setup(struct transport_container *tc, struct device *dev, |
ee959b00 | 346 | struct device *cdev) |
1da177e4 LT |
347 | { |
348 | struct scsi_target *starget = to_scsi_target(dev); | |
349 | struct fc_rport *rport = starget_to_rport(starget); | |
350 | ||
351 | /* | |
352 | * if parent is remote port, use values from remote port. | |
353 | * Otherwise, this host uses the fc_transport, but not the | |
354 | * remote port interface. As such, initialize to known non-values. | |
355 | */ | |
356 | if (rport) { | |
357 | fc_starget_node_name(starget) = rport->node_name; | |
358 | fc_starget_port_name(starget) = rport->port_name; | |
359 | fc_starget_port_id(starget) = rport->port_id; | |
360 | } else { | |
361 | fc_starget_node_name(starget) = -1; | |
362 | fc_starget_port_name(starget) = -1; | |
363 | fc_starget_port_id(starget) = -1; | |
364 | } | |
365 | ||
366 | return 0; | |
367 | } | |
368 | ||
369 | static DECLARE_TRANSPORT_CLASS(fc_transport_class, | |
370 | "fc_transport", | |
371 | fc_target_setup, | |
372 | NULL, | |
373 | NULL); | |
374 | ||
d0a7e574 | 375 | static int fc_host_setup(struct transport_container *tc, struct device *dev, |
ee959b00 | 376 | struct device *cdev) |
1da177e4 LT |
377 | { |
378 | struct Scsi_Host *shost = dev_to_shost(dev); | |
aedf3497 | 379 | struct fc_host_attrs *fc_host = shost_to_fc_host(shost); |
1da177e4 | 380 | |
9ef3e4a4 | 381 | /* |
1da177e4 LT |
382 | * Set default values easily detected by the midlayer as |
383 | * failure cases. The scsi lldd is responsible for initializing | |
384 | * all transport attributes to valid values per host. | |
385 | */ | |
aedf3497 JS |
386 | fc_host->node_name = -1; |
387 | fc_host->port_name = -1; | |
388 | fc_host->permanent_port_name = -1; | |
389 | fc_host->supported_classes = FC_COS_UNSPECIFIED; | |
390 | memset(fc_host->supported_fc4s, 0, | |
391 | sizeof(fc_host->supported_fc4s)); | |
aedf3497 JS |
392 | fc_host->supported_speeds = FC_PORTSPEED_UNKNOWN; |
393 | fc_host->maxframe_size = -1; | |
a53eb5e0 | 394 | fc_host->max_npiv_vports = 0; |
aedf3497 JS |
395 | memset(fc_host->serial_number, 0, |
396 | sizeof(fc_host->serial_number)); | |
bb8ef587 NP |
397 | memset(fc_host->manufacturer, 0, |
398 | sizeof(fc_host->manufacturer)); | |
399 | memset(fc_host->model, 0, | |
400 | sizeof(fc_host->model)); | |
401 | memset(fc_host->model_description, 0, | |
402 | sizeof(fc_host->model_description)); | |
403 | memset(fc_host->hardware_version, 0, | |
404 | sizeof(fc_host->hardware_version)); | |
405 | memset(fc_host->driver_version, 0, | |
406 | sizeof(fc_host->driver_version)); | |
407 | memset(fc_host->firmware_version, 0, | |
408 | sizeof(fc_host->firmware_version)); | |
409 | memset(fc_host->optionrom_version, 0, | |
410 | sizeof(fc_host->optionrom_version)); | |
aedf3497 JS |
411 | |
412 | fc_host->port_id = -1; | |
413 | fc_host->port_type = FC_PORTTYPE_UNKNOWN; | |
414 | fc_host->port_state = FC_PORTSTATE_UNKNOWN; | |
415 | memset(fc_host->active_fc4s, 0, | |
416 | sizeof(fc_host->active_fc4s)); | |
417 | fc_host->speed = FC_PORTSPEED_UNKNOWN; | |
418 | fc_host->fabric_name = -1; | |
b8d08210 JS |
419 | memset(fc_host->symbolic_name, 0, sizeof(fc_host->symbolic_name)); |
420 | memset(fc_host->system_hostname, 0, sizeof(fc_host->system_hostname)); | |
aedf3497 JS |
421 | |
422 | fc_host->tgtid_bind_type = FC_TGTID_BIND_BY_WWPN; | |
423 | ||
424 | INIT_LIST_HEAD(&fc_host->rports); | |
425 | INIT_LIST_HEAD(&fc_host->rport_bindings); | |
a53eb5e0 | 426 | INIT_LIST_HEAD(&fc_host->vports); |
aedf3497 JS |
427 | fc_host->next_rport_number = 0; |
428 | fc_host->next_target_id = 0; | |
a53eb5e0 JS |
429 | fc_host->next_vport_number = 0; |
430 | fc_host->npiv_vports_inuse = 0; | |
aedf3497 | 431 | |
aab0de24 KS |
432 | snprintf(fc_host->work_q_name, sizeof(fc_host->work_q_name), |
433 | "fc_wq_%d", shost->host_no); | |
d8537548 | 434 | fc_host->work_q = alloc_workqueue("%s", 0, 0, fc_host->work_q_name); |
aedf3497 JS |
435 | if (!fc_host->work_q) |
436 | return -ENOMEM; | |
437 | ||
43ca910a | 438 | fc_host->dev_loss_tmo = fc_dev_loss_tmo; |
aab0de24 KS |
439 | snprintf(fc_host->devloss_work_q_name, |
440 | sizeof(fc_host->devloss_work_q_name), | |
441 | "fc_dl_%d", shost->host_no); | |
d8537548 KC |
442 | fc_host->devloss_work_q = alloc_workqueue("%s", 0, 0, |
443 | fc_host->devloss_work_q_name); | |
aedf3497 JS |
444 | if (!fc_host->devloss_work_q) { |
445 | destroy_workqueue(fc_host->work_q); | |
446 | fc_host->work_q = NULL; | |
447 | return -ENOMEM; | |
448 | } | |
449 | ||
9e4f5e29 JS |
450 | fc_bsg_hostadd(shost, fc_host); |
451 | /* ignore any bsg add error - we just can't do sgio */ | |
452 | ||
453 | return 0; | |
454 | } | |
455 | ||
456 | static int fc_host_remove(struct transport_container *tc, struct device *dev, | |
457 | struct device *cdev) | |
458 | { | |
459 | struct Scsi_Host *shost = dev_to_shost(dev); | |
460 | struct fc_host_attrs *fc_host = shost_to_fc_host(shost); | |
461 | ||
462 | fc_bsg_remove(fc_host->rqst_q); | |
1da177e4 LT |
463 | return 0; |
464 | } | |
465 | ||
466 | static DECLARE_TRANSPORT_CLASS(fc_host_class, | |
467 | "fc_host", | |
468 | fc_host_setup, | |
9e4f5e29 | 469 | fc_host_remove, |
1da177e4 LT |
470 | NULL); |
471 | ||
472 | /* | |
473 | * Setup and Remove actions for remote ports are handled | |
474 | * in the service functions below. | |
475 | */ | |
476 | static DECLARE_TRANSPORT_CLASS(fc_rport_class, | |
477 | "fc_remote_ports", | |
478 | NULL, | |
479 | NULL, | |
480 | NULL); | |
481 | ||
a53eb5e0 JS |
482 | /* |
483 | * Setup and Remove actions for virtual ports are handled | |
484 | * in the service functions below. | |
485 | */ | |
486 | static DECLARE_TRANSPORT_CLASS(fc_vport_class, | |
487 | "fc_vports", | |
488 | NULL, | |
489 | NULL, | |
490 | NULL); | |
491 | ||
eb44820c | 492 | /* |
84314fd4 | 493 | * Netlink Infrastructure |
eb44820c | 494 | */ |
84314fd4 JS |
495 | |
496 | static atomic_t fc_event_seq; | |
497 | ||
498 | /** | |
499 | * fc_get_event_number - Obtain the next sequential FC event number | |
500 | * | |
501 | * Notes: | |
eb44820c | 502 | * We could have inlined this, but it would have required fc_event_seq to |
84314fd4 JS |
503 | * be exposed. For now, live with the subroutine call. |
504 | * Atomic used to avoid lock/unlock... | |
eb44820c | 505 | */ |
84314fd4 JS |
506 | u32 |
507 | fc_get_event_number(void) | |
508 | { | |
509 | return atomic_add_return(1, &fc_event_seq); | |
510 | } | |
511 | EXPORT_SYMBOL(fc_get_event_number); | |
512 | ||
84314fd4 | 513 | /** |
2b1be558 JS |
514 | * fc_host_post_fc_event - routine to do the work of posting an event |
515 | * on an fc_host. | |
84314fd4 JS |
516 | * @shost: host the event occurred on |
517 | * @event_number: fc event number obtained from get_fc_event_number() | |
518 | * @event_code: fc_host event being posted | |
2b1be558 JS |
519 | * @data_len: amount, in bytes, of event data |
520 | * @data_buf: pointer to event data | |
521 | * @vendor_id: value for Vendor id | |
84314fd4 JS |
522 | * |
523 | * Notes: | |
524 | * This routine assumes no locks are held on entry. | |
eb44820c | 525 | */ |
84314fd4 | 526 | void |
2b1be558 JS |
527 | fc_host_post_fc_event(struct Scsi_Host *shost, u32 event_number, |
528 | enum fc_host_event_code event_code, | |
529 | u32 data_len, char *data_buf, u64 vendor_id) | |
84314fd4 JS |
530 | { |
531 | struct sk_buff *skb; | |
532 | struct nlmsghdr *nlh; | |
533 | struct fc_nl_event *event; | |
534 | const char *name; | |
e07ebea0 | 535 | u32 len; |
84314fd4 JS |
536 | int err; |
537 | ||
2b1be558 JS |
538 | if (!data_buf || data_len < 4) |
539 | data_len = 0; | |
540 | ||
84314fd4 JS |
541 | if (!scsi_nl_sock) { |
542 | err = -ENOENT; | |
543 | goto send_fail; | |
544 | } | |
545 | ||
2b1be558 | 546 | len = FC_NL_MSGALIGN(sizeof(*event) + data_len); |
84314fd4 | 547 | |
e07ebea0 | 548 | skb = nlmsg_new(len, GFP_KERNEL); |
84314fd4 JS |
549 | if (!skb) { |
550 | err = -ENOBUFS; | |
551 | goto send_fail; | |
552 | } | |
553 | ||
e07ebea0 | 554 | nlh = nlmsg_put(skb, 0, 0, SCSI_TRANSPORT_MSG, len, 0); |
84314fd4 JS |
555 | if (!nlh) { |
556 | err = -ENOBUFS; | |
557 | goto send_fail_skb; | |
558 | } | |
e07ebea0 | 559 | event = nlmsg_data(nlh); |
84314fd4 JS |
560 | |
561 | INIT_SCSI_NL_HDR(&event->snlh, SCSI_NL_TRANSPORT_FC, | |
562 | FC_NL_ASYNC_EVENT, len); | |
fe7f4e5d | 563 | event->seconds = ktime_get_real_seconds(); |
2b1be558 | 564 | event->vendor_id = vendor_id; |
84314fd4 | 565 | event->host_no = shost->host_no; |
2b1be558 | 566 | event->event_datalen = data_len; /* bytes */ |
84314fd4 JS |
567 | event->event_num = event_number; |
568 | event->event_code = event_code; | |
2b1be558 JS |
569 | if (data_len) |
570 | memcpy(&event->event_data, data_buf, data_len); | |
84314fd4 | 571 | |
ff491a73 PNA |
572 | nlmsg_multicast(scsi_nl_sock, skb, 0, SCSI_NL_GRP_FC_EVENTS, |
573 | GFP_KERNEL); | |
84314fd4 JS |
574 | return; |
575 | ||
576 | send_fail_skb: | |
577 | kfree_skb(skb); | |
578 | send_fail: | |
579 | name = get_fc_host_event_code_name(event_code); | |
580 | printk(KERN_WARNING | |
581 | "%s: Dropped Event : host %d %s data 0x%08x - err %d\n", | |
cadbd4a5 | 582 | __func__, shost->host_no, |
2b1be558 JS |
583 | (name) ? name : "<unknown>", |
584 | (data_len) ? *((u32 *)data_buf) : 0xFFFFFFFF, err); | |
84314fd4 JS |
585 | return; |
586 | } | |
2b1be558 JS |
587 | EXPORT_SYMBOL(fc_host_post_fc_event); |
588 | ||
589 | /** | |
590 | * fc_host_post_event - called to post an even on an fc_host. | |
591 | * @shost: host the event occurred on | |
592 | * @event_number: fc event number obtained from get_fc_event_number() | |
593 | * @event_code: fc_host event being posted | |
594 | * @event_data: 32bits of data for the event being posted | |
595 | * | |
596 | * Notes: | |
597 | * This routine assumes no locks are held on entry. | |
598 | */ | |
599 | void | |
600 | fc_host_post_event(struct Scsi_Host *shost, u32 event_number, | |
601 | enum fc_host_event_code event_code, u32 event_data) | |
602 | { | |
603 | fc_host_post_fc_event(shost, event_number, event_code, | |
604 | (u32)sizeof(u32), (char *)&event_data, 0); | |
605 | } | |
84314fd4 JS |
606 | EXPORT_SYMBOL(fc_host_post_event); |
607 | ||
608 | ||
609 | /** | |
2b1be558 JS |
610 | * fc_host_post_vendor_event - called to post a vendor unique event |
611 | * on an fc_host | |
84314fd4 JS |
612 | * @shost: host the event occurred on |
613 | * @event_number: fc event number obtained from get_fc_event_number() | |
614 | * @data_len: amount, in bytes, of vendor unique data | |
615 | * @data_buf: pointer to vendor unique data | |
eb44820c | 616 | * @vendor_id: Vendor id |
84314fd4 JS |
617 | * |
618 | * Notes: | |
619 | * This routine assumes no locks are held on entry. | |
eb44820c | 620 | */ |
84314fd4 JS |
621 | void |
622 | fc_host_post_vendor_event(struct Scsi_Host *shost, u32 event_number, | |
f14e2e29 | 623 | u32 data_len, char * data_buf, u64 vendor_id) |
84314fd4 | 624 | { |
2b1be558 JS |
625 | fc_host_post_fc_event(shost, event_number, FCH_EVT_VENDOR_UNIQUE, |
626 | data_len, data_buf, vendor_id); | |
84314fd4 JS |
627 | } |
628 | EXPORT_SYMBOL(fc_host_post_vendor_event); | |
629 | ||
c39e0af6 JS |
630 | /** |
631 | * fc_host_rcv_fpin - routine to process a received FPIN. | |
632 | * @shost: host the FPIN was received on | |
633 | * @fpin_len: length of FPIN payload, in bytes | |
634 | * @fpin_buf: pointer to FPIN payload | |
635 | * | |
636 | * Notes: | |
637 | * This routine assumes no locks are held on entry. | |
638 | */ | |
639 | void | |
640 | fc_host_fpin_rcv(struct Scsi_Host *shost, u32 fpin_len, char *fpin_buf) | |
641 | { | |
642 | fc_host_post_fc_event(shost, fc_get_event_number(), | |
643 | FCH_EVT_LINK_FPIN, fpin_len, fpin_buf, 0); | |
644 | } | |
645 | EXPORT_SYMBOL(fc_host_fpin_rcv); | |
646 | ||
84314fd4 | 647 | |
1da177e4 LT |
648 | static __init int fc_transport_init(void) |
649 | { | |
84314fd4 JS |
650 | int error; |
651 | ||
652 | atomic_set(&fc_event_seq, 0); | |
653 | ||
654 | error = transport_class_register(&fc_host_class); | |
a53eb5e0 JS |
655 | if (error) |
656 | return error; | |
657 | error = transport_class_register(&fc_vport_class); | |
1da177e4 | 658 | if (error) |
48de68a4 | 659 | goto unreg_host_class; |
1da177e4 LT |
660 | error = transport_class_register(&fc_rport_class); |
661 | if (error) | |
48de68a4 MC |
662 | goto unreg_vport_class; |
663 | error = transport_class_register(&fc_transport_class); | |
664 | if (error) | |
665 | goto unreg_rport_class; | |
666 | return 0; | |
667 | ||
668 | unreg_rport_class: | |
669 | transport_class_unregister(&fc_rport_class); | |
670 | unreg_vport_class: | |
671 | transport_class_unregister(&fc_vport_class); | |
672 | unreg_host_class: | |
673 | transport_class_unregister(&fc_host_class); | |
674 | return error; | |
1da177e4 LT |
675 | } |
676 | ||
677 | static void __exit fc_transport_exit(void) | |
678 | { | |
679 | transport_class_unregister(&fc_transport_class); | |
680 | transport_class_unregister(&fc_rport_class); | |
681 | transport_class_unregister(&fc_host_class); | |
a53eb5e0 | 682 | transport_class_unregister(&fc_vport_class); |
1da177e4 LT |
683 | } |
684 | ||
685 | /* | |
686 | * FC Remote Port Attribute Management | |
687 | */ | |
688 | ||
689 | #define fc_rport_show_function(field, format_string, sz, cast) \ | |
690 | static ssize_t \ | |
ee959b00 TJ |
691 | show_fc_rport_##field (struct device *dev, \ |
692 | struct device_attribute *attr, char *buf) \ | |
1da177e4 | 693 | { \ |
ee959b00 | 694 | struct fc_rport *rport = transport_class_to_rport(dev); \ |
1da177e4 LT |
695 | struct Scsi_Host *shost = rport_to_shost(rport); \ |
696 | struct fc_internal *i = to_fc_internal(shost->transportt); \ | |
19a7b4ae JSEC |
697 | if ((i->f->get_rport_##field) && \ |
698 | !((rport->port_state == FC_PORTSTATE_BLOCKED) || \ | |
42e33148 | 699 | (rport->port_state == FC_PORTSTATE_DELETED) || \ |
19a7b4ae | 700 | (rport->port_state == FC_PORTSTATE_NOTPRESENT))) \ |
1da177e4 LT |
701 | i->f->get_rport_##field(rport); \ |
702 | return snprintf(buf, sz, format_string, cast rport->field); \ | |
703 | } | |
704 | ||
705 | #define fc_rport_store_function(field) \ | |
706 | static ssize_t \ | |
ee959b00 TJ |
707 | store_fc_rport_##field(struct device *dev, \ |
708 | struct device_attribute *attr, \ | |
709 | const char *buf, size_t count) \ | |
1da177e4 LT |
710 | { \ |
711 | int val; \ | |
ee959b00 | 712 | struct fc_rport *rport = transport_class_to_rport(dev); \ |
1da177e4 LT |
713 | struct Scsi_Host *shost = rport_to_shost(rport); \ |
714 | struct fc_internal *i = to_fc_internal(shost->transportt); \ | |
0f29b966 | 715 | char *cp; \ |
19a7b4ae | 716 | if ((rport->port_state == FC_PORTSTATE_BLOCKED) || \ |
42e33148 | 717 | (rport->port_state == FC_PORTSTATE_DELETED) || \ |
19a7b4ae JSEC |
718 | (rport->port_state == FC_PORTSTATE_NOTPRESENT)) \ |
719 | return -EBUSY; \ | |
0f29b966 JS |
720 | val = simple_strtoul(buf, &cp, 0); \ |
721 | if (*cp && (*cp != '\n')) \ | |
722 | return -EINVAL; \ | |
1da177e4 LT |
723 | i->f->set_rport_##field(rport, val); \ |
724 | return count; \ | |
725 | } | |
726 | ||
727 | #define fc_rport_rd_attr(field, format_string, sz) \ | |
728 | fc_rport_show_function(field, format_string, sz, ) \ | |
ee959b00 | 729 | static FC_DEVICE_ATTR(rport, field, S_IRUGO, \ |
1da177e4 LT |
730 | show_fc_rport_##field, NULL) |
731 | ||
732 | #define fc_rport_rd_attr_cast(field, format_string, sz, cast) \ | |
733 | fc_rport_show_function(field, format_string, sz, (cast)) \ | |
ee959b00 | 734 | static FC_DEVICE_ATTR(rport, field, S_IRUGO, \ |
1da177e4 LT |
735 | show_fc_rport_##field, NULL) |
736 | ||
737 | #define fc_rport_rw_attr(field, format_string, sz) \ | |
738 | fc_rport_show_function(field, format_string, sz, ) \ | |
739 | fc_rport_store_function(field) \ | |
ee959b00 | 740 | static FC_DEVICE_ATTR(rport, field, S_IRUGO | S_IWUSR, \ |
1da177e4 LT |
741 | show_fc_rport_##field, \ |
742 | store_fc_rport_##field) | |
743 | ||
744 | ||
745 | #define fc_private_rport_show_function(field, format_string, sz, cast) \ | |
746 | static ssize_t \ | |
ee959b00 TJ |
747 | show_fc_rport_##field (struct device *dev, \ |
748 | struct device_attribute *attr, char *buf) \ | |
1da177e4 | 749 | { \ |
ee959b00 | 750 | struct fc_rport *rport = transport_class_to_rport(dev); \ |
1da177e4 LT |
751 | return snprintf(buf, sz, format_string, cast rport->field); \ |
752 | } | |
753 | ||
754 | #define fc_private_rport_rd_attr(field, format_string, sz) \ | |
755 | fc_private_rport_show_function(field, format_string, sz, ) \ | |
ee959b00 | 756 | static FC_DEVICE_ATTR(rport, field, S_IRUGO, \ |
1da177e4 LT |
757 | show_fc_rport_##field, NULL) |
758 | ||
759 | #define fc_private_rport_rd_attr_cast(field, format_string, sz, cast) \ | |
760 | fc_private_rport_show_function(field, format_string, sz, (cast)) \ | |
ee959b00 | 761 | static FC_DEVICE_ATTR(rport, field, S_IRUGO, \ |
1da177e4 LT |
762 | show_fc_rport_##field, NULL) |
763 | ||
764 | ||
765 | #define fc_private_rport_rd_enum_attr(title, maxlen) \ | |
766 | static ssize_t \ | |
ee959b00 TJ |
767 | show_fc_rport_##title (struct device *dev, \ |
768 | struct device_attribute *attr, char *buf) \ | |
1da177e4 | 769 | { \ |
ee959b00 | 770 | struct fc_rport *rport = transport_class_to_rport(dev); \ |
1da177e4 LT |
771 | const char *name; \ |
772 | name = get_fc_##title##_name(rport->title); \ | |
773 | if (!name) \ | |
774 | return -EINVAL; \ | |
775 | return snprintf(buf, maxlen, "%s\n", name); \ | |
776 | } \ | |
ee959b00 | 777 | static FC_DEVICE_ATTR(rport, title, S_IRUGO, \ |
1da177e4 LT |
778 | show_fc_rport_##title, NULL) |
779 | ||
780 | ||
781 | #define SETUP_RPORT_ATTRIBUTE_RD(field) \ | |
ee959b00 | 782 | i->private_rport_attrs[count] = device_attr_rport_##field; \ |
1da177e4 LT |
783 | i->private_rport_attrs[count].attr.mode = S_IRUGO; \ |
784 | i->private_rport_attrs[count].store = NULL; \ | |
785 | i->rport_attrs[count] = &i->private_rport_attrs[count]; \ | |
786 | if (i->f->show_rport_##field) \ | |
787 | count++ | |
788 | ||
789 | #define SETUP_PRIVATE_RPORT_ATTRIBUTE_RD(field) \ | |
ee959b00 | 790 | i->private_rport_attrs[count] = device_attr_rport_##field; \ |
1da177e4 LT |
791 | i->private_rport_attrs[count].attr.mode = S_IRUGO; \ |
792 | i->private_rport_attrs[count].store = NULL; \ | |
793 | i->rport_attrs[count] = &i->private_rport_attrs[count]; \ | |
794 | count++ | |
795 | ||
796 | #define SETUP_RPORT_ATTRIBUTE_RW(field) \ | |
ee959b00 | 797 | i->private_rport_attrs[count] = device_attr_rport_##field; \ |
1da177e4 LT |
798 | if (!i->f->set_rport_##field) { \ |
799 | i->private_rport_attrs[count].attr.mode = S_IRUGO; \ | |
800 | i->private_rport_attrs[count].store = NULL; \ | |
801 | } \ | |
802 | i->rport_attrs[count] = &i->private_rport_attrs[count]; \ | |
803 | if (i->f->show_rport_##field) \ | |
804 | count++ | |
805 | ||
0f29b966 JS |
806 | #define SETUP_PRIVATE_RPORT_ATTRIBUTE_RW(field) \ |
807 | { \ | |
ee959b00 | 808 | i->private_rport_attrs[count] = device_attr_rport_##field; \ |
0f29b966 JS |
809 | i->rport_attrs[count] = &i->private_rport_attrs[count]; \ |
810 | count++; \ | |
811 | } | |
812 | ||
1da177e4 LT |
813 | |
814 | /* The FC Transport Remote Port Attributes: */ | |
815 | ||
816 | /* Fixed Remote Port Attributes */ | |
817 | ||
818 | fc_private_rport_rd_attr(maxframe_size, "%u bytes\n", 20); | |
819 | ||
820 | static ssize_t | |
ee959b00 TJ |
821 | show_fc_rport_supported_classes (struct device *dev, |
822 | struct device_attribute *attr, char *buf) | |
1da177e4 | 823 | { |
ee959b00 | 824 | struct fc_rport *rport = transport_class_to_rport(dev); |
1da177e4 LT |
825 | if (rport->supported_classes == FC_COS_UNSPECIFIED) |
826 | return snprintf(buf, 20, "unspecified\n"); | |
827 | return get_fc_cos_names(rport->supported_classes, buf); | |
828 | } | |
ee959b00 | 829 | static FC_DEVICE_ATTR(rport, supported_classes, S_IRUGO, |
1da177e4 LT |
830 | show_fc_rport_supported_classes, NULL); |
831 | ||
832 | /* Dynamic Remote Port Attributes */ | |
833 | ||
19a7b4ae JSEC |
834 | /* |
835 | * dev_loss_tmo attribute | |
836 | */ | |
43ca910a MC |
837 | static int fc_str_to_dev_loss(const char *buf, unsigned long *val) |
838 | { | |
839 | char *cp; | |
840 | ||
841 | *val = simple_strtoul(buf, &cp, 0); | |
eea42270 | 842 | if (*cp && (*cp != '\n')) |
43ca910a MC |
843 | return -EINVAL; |
844 | /* | |
845 | * Check for overflow; dev_loss_tmo is u32 | |
846 | */ | |
847 | if (*val > UINT_MAX) | |
848 | return -EINVAL; | |
849 | ||
850 | return 0; | |
851 | } | |
852 | ||
853 | static int fc_rport_set_dev_loss_tmo(struct fc_rport *rport, | |
854 | unsigned long val) | |
19a7b4ae | 855 | { |
19a7b4ae JSEC |
856 | struct Scsi_Host *shost = rport_to_shost(rport); |
857 | struct fc_internal *i = to_fc_internal(shost->transportt); | |
43ca910a | 858 | |
19a7b4ae | 859 | if ((rport->port_state == FC_PORTSTATE_BLOCKED) || |
42e33148 | 860 | (rport->port_state == FC_PORTSTATE_DELETED) || |
19a7b4ae JSEC |
861 | (rport->port_state == FC_PORTSTATE_NOTPRESENT)) |
862 | return -EBUSY; | |
36dd288f HR |
863 | /* |
864 | * Check for overflow; dev_loss_tmo is u32 | |
865 | */ | |
866 | if (val > UINT_MAX) | |
867 | return -EINVAL; | |
868 | ||
f2818663 HR |
869 | /* |
870 | * If fast_io_fail is off we have to cap | |
871 | * dev_loss_tmo at SCSI_DEVICE_BLOCK_MAX_TIMEOUT | |
872 | */ | |
873 | if (rport->fast_io_fail_tmo == -1 && | |
874 | val > SCSI_DEVICE_BLOCK_MAX_TIMEOUT) | |
875 | return -EINVAL; | |
876 | ||
19a7b4ae | 877 | i->f->set_rport_dev_loss_tmo(rport, val); |
43ca910a MC |
878 | return 0; |
879 | } | |
880 | ||
881 | fc_rport_show_function(dev_loss_tmo, "%d\n", 20, ) | |
882 | static ssize_t | |
883 | store_fc_rport_dev_loss_tmo(struct device *dev, struct device_attribute *attr, | |
884 | const char *buf, size_t count) | |
885 | { | |
886 | struct fc_rport *rport = transport_class_to_rport(dev); | |
887 | unsigned long val; | |
888 | int rc; | |
889 | ||
890 | rc = fc_str_to_dev_loss(buf, &val); | |
891 | if (rc) | |
892 | return rc; | |
893 | ||
894 | rc = fc_rport_set_dev_loss_tmo(rport, val); | |
895 | if (rc) | |
896 | return rc; | |
19a7b4ae JSEC |
897 | return count; |
898 | } | |
ee959b00 | 899 | static FC_DEVICE_ATTR(rport, dev_loss_tmo, S_IRUGO | S_IWUSR, |
19a7b4ae | 900 | show_fc_rport_dev_loss_tmo, store_fc_rport_dev_loss_tmo); |
1da177e4 LT |
901 | |
902 | ||
903 | /* Private Remote Port Attributes */ | |
904 | ||
905 | fc_private_rport_rd_attr_cast(node_name, "0x%llx\n", 20, unsigned long long); | |
906 | fc_private_rport_rd_attr_cast(port_name, "0x%llx\n", 20, unsigned long long); | |
907 | fc_private_rport_rd_attr(port_id, "0x%06x\n", 20); | |
908 | ||
909 | static ssize_t | |
ee959b00 TJ |
910 | show_fc_rport_roles (struct device *dev, struct device_attribute *attr, |
911 | char *buf) | |
1da177e4 | 912 | { |
ee959b00 | 913 | struct fc_rport *rport = transport_class_to_rport(dev); |
1da177e4 LT |
914 | |
915 | /* identify any roles that are port_id specific */ | |
916 | if ((rport->port_id != -1) && | |
917 | (rport->port_id & FC_WELLKNOWN_PORTID_MASK) == | |
918 | FC_WELLKNOWN_PORTID_MASK) { | |
919 | switch (rport->port_id & FC_WELLKNOWN_ROLE_MASK) { | |
920 | case FC_FPORT_PORTID: | |
921 | return snprintf(buf, 30, "Fabric Port\n"); | |
922 | case FC_FABCTLR_PORTID: | |
923 | return snprintf(buf, 30, "Fabric Controller\n"); | |
924 | case FC_DIRSRVR_PORTID: | |
925 | return snprintf(buf, 30, "Directory Server\n"); | |
926 | case FC_TIMESRVR_PORTID: | |
927 | return snprintf(buf, 30, "Time Server\n"); | |
928 | case FC_MGMTSRVR_PORTID: | |
929 | return snprintf(buf, 30, "Management Server\n"); | |
930 | default: | |
931 | return snprintf(buf, 30, "Unknown Fabric Entity\n"); | |
932 | } | |
933 | } else { | |
a53eb5e0 | 934 | if (rport->roles == FC_PORT_ROLE_UNKNOWN) |
1da177e4 | 935 | return snprintf(buf, 20, "unknown\n"); |
a53eb5e0 | 936 | return get_fc_port_roles_names(rport->roles, buf); |
1da177e4 LT |
937 | } |
938 | } | |
ee959b00 | 939 | static FC_DEVICE_ATTR(rport, roles, S_IRUGO, |
1da177e4 LT |
940 | show_fc_rport_roles, NULL); |
941 | ||
942 | fc_private_rport_rd_enum_attr(port_state, FC_PORTSTATE_MAX_NAMELEN); | |
943 | fc_private_rport_rd_attr(scsi_target_id, "%d\n", 20); | |
944 | ||
0f29b966 JS |
945 | /* |
946 | * fast_io_fail_tmo attribute | |
947 | */ | |
948 | static ssize_t | |
ee959b00 TJ |
949 | show_fc_rport_fast_io_fail_tmo (struct device *dev, |
950 | struct device_attribute *attr, char *buf) | |
0f29b966 | 951 | { |
ee959b00 | 952 | struct fc_rport *rport = transport_class_to_rport(dev); |
0f29b966 JS |
953 | |
954 | if (rport->fast_io_fail_tmo == -1) | |
955 | return snprintf(buf, 5, "off\n"); | |
956 | return snprintf(buf, 20, "%d\n", rport->fast_io_fail_tmo); | |
957 | } | |
958 | ||
959 | static ssize_t | |
ee959b00 TJ |
960 | store_fc_rport_fast_io_fail_tmo(struct device *dev, |
961 | struct device_attribute *attr, const char *buf, | |
962 | size_t count) | |
0f29b966 JS |
963 | { |
964 | int val; | |
965 | char *cp; | |
ee959b00 | 966 | struct fc_rport *rport = transport_class_to_rport(dev); |
0f29b966 JS |
967 | |
968 | if ((rport->port_state == FC_PORTSTATE_BLOCKED) || | |
969 | (rport->port_state == FC_PORTSTATE_DELETED) || | |
970 | (rport->port_state == FC_PORTSTATE_NOTPRESENT)) | |
971 | return -EBUSY; | |
972 | if (strncmp(buf, "off", 3) == 0) | |
973 | rport->fast_io_fail_tmo = -1; | |
974 | else { | |
975 | val = simple_strtoul(buf, &cp, 0); | |
f2818663 HR |
976 | if ((*cp && (*cp != '\n')) || (val < 0)) |
977 | return -EINVAL; | |
978 | /* | |
979 | * Cap fast_io_fail by dev_loss_tmo or | |
980 | * SCSI_DEVICE_BLOCK_MAX_TIMEOUT. | |
981 | */ | |
982 | if ((val >= rport->dev_loss_tmo) || | |
983 | (val > SCSI_DEVICE_BLOCK_MAX_TIMEOUT)) | |
0f29b966 | 984 | return -EINVAL; |
f2818663 | 985 | |
0f29b966 JS |
986 | rport->fast_io_fail_tmo = val; |
987 | } | |
988 | return count; | |
989 | } | |
ee959b00 | 990 | static FC_DEVICE_ATTR(rport, fast_io_fail_tmo, S_IRUGO | S_IWUSR, |
0f29b966 | 991 | show_fc_rport_fast_io_fail_tmo, store_fc_rport_fast_io_fail_tmo); |
1da177e4 LT |
992 | |
993 | ||
994 | /* | |
995 | * FC SCSI Target Attribute Management | |
996 | */ | |
997 | ||
998 | /* | |
999 | * Note: in the target show function we recognize when the remote | |
732bee7a | 1000 | * port is in the hierarchy and do not allow the driver to get |
1da177e4 LT |
1001 | * involved in sysfs functions. The driver only gets involved if |
1002 | * it's the "old" style that doesn't use rports. | |
1003 | */ | |
1004 | #define fc_starget_show_function(field, format_string, sz, cast) \ | |
1005 | static ssize_t \ | |
ee959b00 TJ |
1006 | show_fc_starget_##field (struct device *dev, \ |
1007 | struct device_attribute *attr, char *buf) \ | |
1da177e4 | 1008 | { \ |
ee959b00 | 1009 | struct scsi_target *starget = transport_class_to_starget(dev); \ |
1da177e4 LT |
1010 | struct Scsi_Host *shost = dev_to_shost(starget->dev.parent); \ |
1011 | struct fc_internal *i = to_fc_internal(shost->transportt); \ | |
1012 | struct fc_rport *rport = starget_to_rport(starget); \ | |
1013 | if (rport) \ | |
1014 | fc_starget_##field(starget) = rport->field; \ | |
1015 | else if (i->f->get_starget_##field) \ | |
1016 | i->f->get_starget_##field(starget); \ | |
1017 | return snprintf(buf, sz, format_string, \ | |
1018 | cast fc_starget_##field(starget)); \ | |
1019 | } | |
1020 | ||
1021 | #define fc_starget_rd_attr(field, format_string, sz) \ | |
1022 | fc_starget_show_function(field, format_string, sz, ) \ | |
ee959b00 | 1023 | static FC_DEVICE_ATTR(starget, field, S_IRUGO, \ |
1da177e4 LT |
1024 | show_fc_starget_##field, NULL) |
1025 | ||
1026 | #define fc_starget_rd_attr_cast(field, format_string, sz, cast) \ | |
1027 | fc_starget_show_function(field, format_string, sz, (cast)) \ | |
ee959b00 | 1028 | static FC_DEVICE_ATTR(starget, field, S_IRUGO, \ |
1da177e4 LT |
1029 | show_fc_starget_##field, NULL) |
1030 | ||
1031 | #define SETUP_STARGET_ATTRIBUTE_RD(field) \ | |
ee959b00 | 1032 | i->private_starget_attrs[count] = device_attr_starget_##field; \ |
1da177e4 LT |
1033 | i->private_starget_attrs[count].attr.mode = S_IRUGO; \ |
1034 | i->private_starget_attrs[count].store = NULL; \ | |
1035 | i->starget_attrs[count] = &i->private_starget_attrs[count]; \ | |
1036 | if (i->f->show_starget_##field) \ | |
1037 | count++ | |
1038 | ||
1039 | #define SETUP_STARGET_ATTRIBUTE_RW(field) \ | |
ee959b00 | 1040 | i->private_starget_attrs[count] = device_attr_starget_##field; \ |
1da177e4 LT |
1041 | if (!i->f->set_starget_##field) { \ |
1042 | i->private_starget_attrs[count].attr.mode = S_IRUGO; \ | |
1043 | i->private_starget_attrs[count].store = NULL; \ | |
1044 | } \ | |
1045 | i->starget_attrs[count] = &i->private_starget_attrs[count]; \ | |
1046 | if (i->f->show_starget_##field) \ | |
1047 | count++ | |
1048 | ||
1049 | /* The FC Transport SCSI Target Attributes: */ | |
1050 | fc_starget_rd_attr_cast(node_name, "0x%llx\n", 20, unsigned long long); | |
1051 | fc_starget_rd_attr_cast(port_name, "0x%llx\n", 20, unsigned long long); | |
1052 | fc_starget_rd_attr(port_id, "0x%06x\n", 20); | |
1053 | ||
1054 | ||
a53eb5e0 JS |
1055 | /* |
1056 | * FC Virtual Port Attribute Management | |
1057 | */ | |
1058 | ||
1059 | #define fc_vport_show_function(field, format_string, sz, cast) \ | |
1060 | static ssize_t \ | |
ee959b00 TJ |
1061 | show_fc_vport_##field (struct device *dev, \ |
1062 | struct device_attribute *attr, char *buf) \ | |
a53eb5e0 | 1063 | { \ |
ee959b00 | 1064 | struct fc_vport *vport = transport_class_to_vport(dev); \ |
a53eb5e0 JS |
1065 | struct Scsi_Host *shost = vport_to_shost(vport); \ |
1066 | struct fc_internal *i = to_fc_internal(shost->transportt); \ | |
1067 | if ((i->f->get_vport_##field) && \ | |
1068 | !(vport->flags & (FC_VPORT_DEL | FC_VPORT_CREATING))) \ | |
1069 | i->f->get_vport_##field(vport); \ | |
1070 | return snprintf(buf, sz, format_string, cast vport->field); \ | |
1071 | } | |
1072 | ||
1073 | #define fc_vport_store_function(field) \ | |
1074 | static ssize_t \ | |
ee959b00 TJ |
1075 | store_fc_vport_##field(struct device *dev, \ |
1076 | struct device_attribute *attr, \ | |
1077 | const char *buf, size_t count) \ | |
a53eb5e0 JS |
1078 | { \ |
1079 | int val; \ | |
ee959b00 | 1080 | struct fc_vport *vport = transport_class_to_vport(dev); \ |
a53eb5e0 JS |
1081 | struct Scsi_Host *shost = vport_to_shost(vport); \ |
1082 | struct fc_internal *i = to_fc_internal(shost->transportt); \ | |
1083 | char *cp; \ | |
1084 | if (vport->flags & (FC_VPORT_DEL | FC_VPORT_CREATING)) \ | |
1085 | return -EBUSY; \ | |
1086 | val = simple_strtoul(buf, &cp, 0); \ | |
1087 | if (*cp && (*cp != '\n')) \ | |
1088 | return -EINVAL; \ | |
1089 | i->f->set_vport_##field(vport, val); \ | |
1090 | return count; \ | |
1091 | } | |
1092 | ||
1093 | #define fc_vport_store_str_function(field, slen) \ | |
1094 | static ssize_t \ | |
ee959b00 TJ |
1095 | store_fc_vport_##field(struct device *dev, \ |
1096 | struct device_attribute *attr, \ | |
1097 | const char *buf, size_t count) \ | |
a53eb5e0 | 1098 | { \ |
ee959b00 | 1099 | struct fc_vport *vport = transport_class_to_vport(dev); \ |
a53eb5e0 JS |
1100 | struct Scsi_Host *shost = vport_to_shost(vport); \ |
1101 | struct fc_internal *i = to_fc_internal(shost->transportt); \ | |
1102 | unsigned int cnt=count; \ | |
1103 | \ | |
1104 | /* count may include a LF at end of string */ \ | |
1105 | if (buf[cnt-1] == '\n') \ | |
1106 | cnt--; \ | |
1107 | if (cnt > ((slen) - 1)) \ | |
1108 | return -EINVAL; \ | |
1109 | memcpy(vport->field, buf, cnt); \ | |
1110 | i->f->set_vport_##field(vport); \ | |
1111 | return count; \ | |
1112 | } | |
1113 | ||
1114 | #define fc_vport_rd_attr(field, format_string, sz) \ | |
1115 | fc_vport_show_function(field, format_string, sz, ) \ | |
ee959b00 | 1116 | static FC_DEVICE_ATTR(vport, field, S_IRUGO, \ |
a53eb5e0 JS |
1117 | show_fc_vport_##field, NULL) |
1118 | ||
1119 | #define fc_vport_rd_attr_cast(field, format_string, sz, cast) \ | |
1120 | fc_vport_show_function(field, format_string, sz, (cast)) \ | |
ee959b00 | 1121 | static FC_DEVICE_ATTR(vport, field, S_IRUGO, \ |
a53eb5e0 JS |
1122 | show_fc_vport_##field, NULL) |
1123 | ||
1124 | #define fc_vport_rw_attr(field, format_string, sz) \ | |
1125 | fc_vport_show_function(field, format_string, sz, ) \ | |
1126 | fc_vport_store_function(field) \ | |
ee959b00 | 1127 | static FC_DEVICE_ATTR(vport, field, S_IRUGO | S_IWUSR, \ |
a53eb5e0 JS |
1128 | show_fc_vport_##field, \ |
1129 | store_fc_vport_##field) | |
1130 | ||
1131 | #define fc_private_vport_show_function(field, format_string, sz, cast) \ | |
1132 | static ssize_t \ | |
ee959b00 TJ |
1133 | show_fc_vport_##field (struct device *dev, \ |
1134 | struct device_attribute *attr, char *buf) \ | |
a53eb5e0 | 1135 | { \ |
ee959b00 | 1136 | struct fc_vport *vport = transport_class_to_vport(dev); \ |
a53eb5e0 JS |
1137 | return snprintf(buf, sz, format_string, cast vport->field); \ |
1138 | } | |
1139 | ||
1140 | #define fc_private_vport_store_u32_function(field) \ | |
1141 | static ssize_t \ | |
ee959b00 TJ |
1142 | store_fc_vport_##field(struct device *dev, \ |
1143 | struct device_attribute *attr, \ | |
1144 | const char *buf, size_t count) \ | |
a53eb5e0 JS |
1145 | { \ |
1146 | u32 val; \ | |
ee959b00 | 1147 | struct fc_vport *vport = transport_class_to_vport(dev); \ |
a53eb5e0 JS |
1148 | char *cp; \ |
1149 | if (vport->flags & (FC_VPORT_DEL | FC_VPORT_CREATING)) \ | |
1150 | return -EBUSY; \ | |
1151 | val = simple_strtoul(buf, &cp, 0); \ | |
1152 | if (*cp && (*cp != '\n')) \ | |
1153 | return -EINVAL; \ | |
1154 | vport->field = val; \ | |
1155 | return count; \ | |
1156 | } | |
1157 | ||
1158 | ||
1159 | #define fc_private_vport_rd_attr(field, format_string, sz) \ | |
1160 | fc_private_vport_show_function(field, format_string, sz, ) \ | |
ee959b00 | 1161 | static FC_DEVICE_ATTR(vport, field, S_IRUGO, \ |
a53eb5e0 JS |
1162 | show_fc_vport_##field, NULL) |
1163 | ||
1164 | #define fc_private_vport_rd_attr_cast(field, format_string, sz, cast) \ | |
1165 | fc_private_vport_show_function(field, format_string, sz, (cast)) \ | |
ee959b00 | 1166 | static FC_DEVICE_ATTR(vport, field, S_IRUGO, \ |
a53eb5e0 JS |
1167 | show_fc_vport_##field, NULL) |
1168 | ||
1169 | #define fc_private_vport_rw_u32_attr(field, format_string, sz) \ | |
1170 | fc_private_vport_show_function(field, format_string, sz, ) \ | |
1171 | fc_private_vport_store_u32_function(field) \ | |
ee959b00 | 1172 | static FC_DEVICE_ATTR(vport, field, S_IRUGO | S_IWUSR, \ |
a53eb5e0 JS |
1173 | show_fc_vport_##field, \ |
1174 | store_fc_vport_##field) | |
1175 | ||
1176 | ||
1177 | #define fc_private_vport_rd_enum_attr(title, maxlen) \ | |
1178 | static ssize_t \ | |
ee959b00 TJ |
1179 | show_fc_vport_##title (struct device *dev, \ |
1180 | struct device_attribute *attr, \ | |
1181 | char *buf) \ | |
a53eb5e0 | 1182 | { \ |
ee959b00 | 1183 | struct fc_vport *vport = transport_class_to_vport(dev); \ |
a53eb5e0 JS |
1184 | const char *name; \ |
1185 | name = get_fc_##title##_name(vport->title); \ | |
1186 | if (!name) \ | |
1187 | return -EINVAL; \ | |
1188 | return snprintf(buf, maxlen, "%s\n", name); \ | |
1189 | } \ | |
ee959b00 | 1190 | static FC_DEVICE_ATTR(vport, title, S_IRUGO, \ |
a53eb5e0 JS |
1191 | show_fc_vport_##title, NULL) |
1192 | ||
1193 | ||
1194 | #define SETUP_VPORT_ATTRIBUTE_RD(field) \ | |
ee959b00 | 1195 | i->private_vport_attrs[count] = device_attr_vport_##field; \ |
a53eb5e0 JS |
1196 | i->private_vport_attrs[count].attr.mode = S_IRUGO; \ |
1197 | i->private_vport_attrs[count].store = NULL; \ | |
1198 | i->vport_attrs[count] = &i->private_vport_attrs[count]; \ | |
1199 | if (i->f->get_##field) \ | |
1200 | count++ | |
1201 | /* NOTE: Above MACRO differs: checks function not show bit */ | |
1202 | ||
1203 | #define SETUP_PRIVATE_VPORT_ATTRIBUTE_RD(field) \ | |
ee959b00 | 1204 | i->private_vport_attrs[count] = device_attr_vport_##field; \ |
a53eb5e0 JS |
1205 | i->private_vport_attrs[count].attr.mode = S_IRUGO; \ |
1206 | i->private_vport_attrs[count].store = NULL; \ | |
1207 | i->vport_attrs[count] = &i->private_vport_attrs[count]; \ | |
1208 | count++ | |
1209 | ||
1210 | #define SETUP_VPORT_ATTRIBUTE_WR(field) \ | |
ee959b00 | 1211 | i->private_vport_attrs[count] = device_attr_vport_##field; \ |
a53eb5e0 JS |
1212 | i->vport_attrs[count] = &i->private_vport_attrs[count]; \ |
1213 | if (i->f->field) \ | |
1214 | count++ | |
1215 | /* NOTE: Above MACRO differs: checks function */ | |
1216 | ||
1217 | #define SETUP_VPORT_ATTRIBUTE_RW(field) \ | |
ee959b00 | 1218 | i->private_vport_attrs[count] = device_attr_vport_##field; \ |
a53eb5e0 JS |
1219 | if (!i->f->set_vport_##field) { \ |
1220 | i->private_vport_attrs[count].attr.mode = S_IRUGO; \ | |
1221 | i->private_vport_attrs[count].store = NULL; \ | |
1222 | } \ | |
1223 | i->vport_attrs[count] = &i->private_vport_attrs[count]; \ | |
1224 | count++ | |
1225 | /* NOTE: Above MACRO differs: does not check show bit */ | |
1226 | ||
1227 | #define SETUP_PRIVATE_VPORT_ATTRIBUTE_RW(field) \ | |
1228 | { \ | |
ee959b00 | 1229 | i->private_vport_attrs[count] = device_attr_vport_##field; \ |
a53eb5e0 JS |
1230 | i->vport_attrs[count] = &i->private_vport_attrs[count]; \ |
1231 | count++; \ | |
1232 | } | |
1233 | ||
1234 | ||
1235 | /* The FC Transport Virtual Port Attributes: */ | |
1236 | ||
1237 | /* Fixed Virtual Port Attributes */ | |
1238 | ||
1239 | /* Dynamic Virtual Port Attributes */ | |
1240 | ||
1241 | /* Private Virtual Port Attributes */ | |
1242 | ||
1243 | fc_private_vport_rd_enum_attr(vport_state, FC_VPORTSTATE_MAX_NAMELEN); | |
1244 | fc_private_vport_rd_enum_attr(vport_last_state, FC_VPORTSTATE_MAX_NAMELEN); | |
1245 | fc_private_vport_rd_attr_cast(node_name, "0x%llx\n", 20, unsigned long long); | |
1246 | fc_private_vport_rd_attr_cast(port_name, "0x%llx\n", 20, unsigned long long); | |
1247 | ||
1248 | static ssize_t | |
ee959b00 TJ |
1249 | show_fc_vport_roles (struct device *dev, struct device_attribute *attr, |
1250 | char *buf) | |
a53eb5e0 | 1251 | { |
ee959b00 | 1252 | struct fc_vport *vport = transport_class_to_vport(dev); |
a53eb5e0 JS |
1253 | |
1254 | if (vport->roles == FC_PORT_ROLE_UNKNOWN) | |
1255 | return snprintf(buf, 20, "unknown\n"); | |
1256 | return get_fc_port_roles_names(vport->roles, buf); | |
1257 | } | |
ee959b00 | 1258 | static FC_DEVICE_ATTR(vport, roles, S_IRUGO, show_fc_vport_roles, NULL); |
a53eb5e0 JS |
1259 | |
1260 | fc_private_vport_rd_enum_attr(vport_type, FC_PORTTYPE_MAX_NAMELEN); | |
1261 | ||
1262 | fc_private_vport_show_function(symbolic_name, "%s\n", | |
1263 | FC_VPORT_SYMBOLIC_NAMELEN + 1, ) | |
1264 | fc_vport_store_str_function(symbolic_name, FC_VPORT_SYMBOLIC_NAMELEN) | |
ee959b00 | 1265 | static FC_DEVICE_ATTR(vport, symbolic_name, S_IRUGO | S_IWUSR, |
a53eb5e0 JS |
1266 | show_fc_vport_symbolic_name, store_fc_vport_symbolic_name); |
1267 | ||
1268 | static ssize_t | |
ee959b00 TJ |
1269 | store_fc_vport_delete(struct device *dev, struct device_attribute *attr, |
1270 | const char *buf, size_t count) | |
a53eb5e0 | 1271 | { |
ee959b00 | 1272 | struct fc_vport *vport = transport_class_to_vport(dev); |
9ef3e4a4 | 1273 | struct Scsi_Host *shost = vport_to_shost(vport); |
0d9dc7c8 GR |
1274 | unsigned long flags; |
1275 | ||
1276 | spin_lock_irqsave(shost->host_lock, flags); | |
260f4aed | 1277 | if (vport->flags & (FC_VPORT_DEL | FC_VPORT_CREATING | FC_VPORT_DELETING)) { |
0d9dc7c8 GR |
1278 | spin_unlock_irqrestore(shost->host_lock, flags); |
1279 | return -EBUSY; | |
1280 | } | |
1281 | vport->flags |= FC_VPORT_DELETING; | |
1282 | spin_unlock_irqrestore(shost->host_lock, flags); | |
a53eb5e0 | 1283 | |
9ef3e4a4 | 1284 | fc_queue_work(shost, &vport->vport_delete_work); |
a53eb5e0 JS |
1285 | return count; |
1286 | } | |
ee959b00 | 1287 | static FC_DEVICE_ATTR(vport, vport_delete, S_IWUSR, |
a53eb5e0 JS |
1288 | NULL, store_fc_vport_delete); |
1289 | ||
1290 | ||
1291 | /* | |
1292 | * Enable/Disable vport | |
1293 | * Write "1" to disable, write "0" to enable | |
1294 | */ | |
1295 | static ssize_t | |
ee959b00 TJ |
1296 | store_fc_vport_disable(struct device *dev, struct device_attribute *attr, |
1297 | const char *buf, | |
a53eb5e0 JS |
1298 | size_t count) |
1299 | { | |
ee959b00 | 1300 | struct fc_vport *vport = transport_class_to_vport(dev); |
a53eb5e0 JS |
1301 | struct Scsi_Host *shost = vport_to_shost(vport); |
1302 | struct fc_internal *i = to_fc_internal(shost->transportt); | |
1303 | int stat; | |
1304 | ||
1305 | if (vport->flags & (FC_VPORT_DEL | FC_VPORT_CREATING)) | |
1306 | return -EBUSY; | |
1307 | ||
1308 | if (*buf == '0') { | |
1309 | if (vport->vport_state != FC_VPORT_DISABLED) | |
1310 | return -EALREADY; | |
1311 | } else if (*buf == '1') { | |
1312 | if (vport->vport_state == FC_VPORT_DISABLED) | |
1313 | return -EALREADY; | |
1314 | } else | |
1315 | return -EINVAL; | |
1316 | ||
1317 | stat = i->f->vport_disable(vport, ((*buf == '0') ? false : true)); | |
1318 | return stat ? stat : count; | |
1319 | } | |
ee959b00 | 1320 | static FC_DEVICE_ATTR(vport, vport_disable, S_IWUSR, |
a53eb5e0 JS |
1321 | NULL, store_fc_vport_disable); |
1322 | ||
1323 | ||
1da177e4 LT |
1324 | /* |
1325 | * Host Attribute Management | |
1326 | */ | |
1327 | ||
1328 | #define fc_host_show_function(field, format_string, sz, cast) \ | |
1329 | static ssize_t \ | |
ee959b00 TJ |
1330 | show_fc_host_##field (struct device *dev, \ |
1331 | struct device_attribute *attr, char *buf) \ | |
1da177e4 | 1332 | { \ |
ee959b00 | 1333 | struct Scsi_Host *shost = transport_class_to_shost(dev); \ |
1da177e4 LT |
1334 | struct fc_internal *i = to_fc_internal(shost->transportt); \ |
1335 | if (i->f->get_host_##field) \ | |
1336 | i->f->get_host_##field(shost); \ | |
1337 | return snprintf(buf, sz, format_string, cast fc_host_##field(shost)); \ | |
1338 | } | |
1339 | ||
1340 | #define fc_host_store_function(field) \ | |
1341 | static ssize_t \ | |
ee959b00 TJ |
1342 | store_fc_host_##field(struct device *dev, \ |
1343 | struct device_attribute *attr, \ | |
1344 | const char *buf, size_t count) \ | |
1da177e4 LT |
1345 | { \ |
1346 | int val; \ | |
ee959b00 | 1347 | struct Scsi_Host *shost = transport_class_to_shost(dev); \ |
1da177e4 | 1348 | struct fc_internal *i = to_fc_internal(shost->transportt); \ |
0f29b966 | 1349 | char *cp; \ |
1da177e4 | 1350 | \ |
0f29b966 JS |
1351 | val = simple_strtoul(buf, &cp, 0); \ |
1352 | if (*cp && (*cp != '\n')) \ | |
1353 | return -EINVAL; \ | |
1da177e4 LT |
1354 | i->f->set_host_##field(shost, val); \ |
1355 | return count; \ | |
1356 | } | |
1357 | ||
b8d08210 JS |
1358 | #define fc_host_store_str_function(field, slen) \ |
1359 | static ssize_t \ | |
ee959b00 TJ |
1360 | store_fc_host_##field(struct device *dev, \ |
1361 | struct device_attribute *attr, \ | |
1362 | const char *buf, size_t count) \ | |
b8d08210 | 1363 | { \ |
ee959b00 | 1364 | struct Scsi_Host *shost = transport_class_to_shost(dev); \ |
b8d08210 JS |
1365 | struct fc_internal *i = to_fc_internal(shost->transportt); \ |
1366 | unsigned int cnt=count; \ | |
1367 | \ | |
1368 | /* count may include a LF at end of string */ \ | |
1369 | if (buf[cnt-1] == '\n') \ | |
1370 | cnt--; \ | |
1371 | if (cnt > ((slen) - 1)) \ | |
1372 | return -EINVAL; \ | |
1373 | memcpy(fc_host_##field(shost), buf, cnt); \ | |
1374 | i->f->set_host_##field(shost); \ | |
1375 | return count; \ | |
1376 | } | |
1377 | ||
1da177e4 LT |
1378 | #define fc_host_rd_attr(field, format_string, sz) \ |
1379 | fc_host_show_function(field, format_string, sz, ) \ | |
ee959b00 | 1380 | static FC_DEVICE_ATTR(host, field, S_IRUGO, \ |
1da177e4 LT |
1381 | show_fc_host_##field, NULL) |
1382 | ||
1383 | #define fc_host_rd_attr_cast(field, format_string, sz, cast) \ | |
1384 | fc_host_show_function(field, format_string, sz, (cast)) \ | |
ee959b00 | 1385 | static FC_DEVICE_ATTR(host, field, S_IRUGO, \ |
1da177e4 LT |
1386 | show_fc_host_##field, NULL) |
1387 | ||
1388 | #define fc_host_rw_attr(field, format_string, sz) \ | |
1389 | fc_host_show_function(field, format_string, sz, ) \ | |
1390 | fc_host_store_function(field) \ | |
ee959b00 | 1391 | static FC_DEVICE_ATTR(host, field, S_IRUGO | S_IWUSR, \ |
1da177e4 LT |
1392 | show_fc_host_##field, \ |
1393 | store_fc_host_##field) | |
1394 | ||
1395 | #define fc_host_rd_enum_attr(title, maxlen) \ | |
1396 | static ssize_t \ | |
ee959b00 TJ |
1397 | show_fc_host_##title (struct device *dev, \ |
1398 | struct device_attribute *attr, char *buf) \ | |
1da177e4 | 1399 | { \ |
ee959b00 | 1400 | struct Scsi_Host *shost = transport_class_to_shost(dev); \ |
1da177e4 LT |
1401 | struct fc_internal *i = to_fc_internal(shost->transportt); \ |
1402 | const char *name; \ | |
1403 | if (i->f->get_host_##title) \ | |
1404 | i->f->get_host_##title(shost); \ | |
1405 | name = get_fc_##title##_name(fc_host_##title(shost)); \ | |
1406 | if (!name) \ | |
1407 | return -EINVAL; \ | |
1408 | return snprintf(buf, maxlen, "%s\n", name); \ | |
1409 | } \ | |
ee959b00 | 1410 | static FC_DEVICE_ATTR(host, title, S_IRUGO, show_fc_host_##title, NULL) |
1da177e4 LT |
1411 | |
1412 | #define SETUP_HOST_ATTRIBUTE_RD(field) \ | |
ee959b00 | 1413 | i->private_host_attrs[count] = device_attr_host_##field; \ |
1da177e4 LT |
1414 | i->private_host_attrs[count].attr.mode = S_IRUGO; \ |
1415 | i->private_host_attrs[count].store = NULL; \ | |
1416 | i->host_attrs[count] = &i->private_host_attrs[count]; \ | |
1417 | if (i->f->show_host_##field) \ | |
1418 | count++ | |
1419 | ||
a53eb5e0 | 1420 | #define SETUP_HOST_ATTRIBUTE_RD_NS(field) \ |
ee959b00 | 1421 | i->private_host_attrs[count] = device_attr_host_##field; \ |
a53eb5e0 JS |
1422 | i->private_host_attrs[count].attr.mode = S_IRUGO; \ |
1423 | i->private_host_attrs[count].store = NULL; \ | |
1424 | i->host_attrs[count] = &i->private_host_attrs[count]; \ | |
1425 | count++ | |
1426 | ||
1da177e4 | 1427 | #define SETUP_HOST_ATTRIBUTE_RW(field) \ |
ee959b00 | 1428 | i->private_host_attrs[count] = device_attr_host_##field; \ |
1da177e4 LT |
1429 | if (!i->f->set_host_##field) { \ |
1430 | i->private_host_attrs[count].attr.mode = S_IRUGO; \ | |
1431 | i->private_host_attrs[count].store = NULL; \ | |
1432 | } \ | |
1433 | i->host_attrs[count] = &i->private_host_attrs[count]; \ | |
1434 | if (i->f->show_host_##field) \ | |
1435 | count++ | |
1436 | ||
1437 | ||
1438 | #define fc_private_host_show_function(field, format_string, sz, cast) \ | |
1439 | static ssize_t \ | |
ee959b00 TJ |
1440 | show_fc_host_##field (struct device *dev, \ |
1441 | struct device_attribute *attr, char *buf) \ | |
1da177e4 | 1442 | { \ |
ee959b00 | 1443 | struct Scsi_Host *shost = transport_class_to_shost(dev); \ |
1da177e4 LT |
1444 | return snprintf(buf, sz, format_string, cast fc_host_##field(shost)); \ |
1445 | } | |
1446 | ||
1447 | #define fc_private_host_rd_attr(field, format_string, sz) \ | |
1448 | fc_private_host_show_function(field, format_string, sz, ) \ | |
ee959b00 | 1449 | static FC_DEVICE_ATTR(host, field, S_IRUGO, \ |
1da177e4 LT |
1450 | show_fc_host_##field, NULL) |
1451 | ||
1452 | #define fc_private_host_rd_attr_cast(field, format_string, sz, cast) \ | |
1453 | fc_private_host_show_function(field, format_string, sz, (cast)) \ | |
ee959b00 | 1454 | static FC_DEVICE_ATTR(host, field, S_IRUGO, \ |
1da177e4 LT |
1455 | show_fc_host_##field, NULL) |
1456 | ||
1457 | #define SETUP_PRIVATE_HOST_ATTRIBUTE_RD(field) \ | |
ee959b00 | 1458 | i->private_host_attrs[count] = device_attr_host_##field; \ |
1da177e4 LT |
1459 | i->private_host_attrs[count].attr.mode = S_IRUGO; \ |
1460 | i->private_host_attrs[count].store = NULL; \ | |
1461 | i->host_attrs[count] = &i->private_host_attrs[count]; \ | |
1462 | count++ | |
1463 | ||
1464 | #define SETUP_PRIVATE_HOST_ATTRIBUTE_RW(field) \ | |
91ca7b01 | 1465 | { \ |
ee959b00 | 1466 | i->private_host_attrs[count] = device_attr_host_##field; \ |
1da177e4 | 1467 | i->host_attrs[count] = &i->private_host_attrs[count]; \ |
91ca7b01 AV |
1468 | count++; \ |
1469 | } | |
1da177e4 LT |
1470 | |
1471 | ||
1472 | /* Fixed Host Attributes */ | |
1473 | ||
1474 | static ssize_t | |
ee959b00 TJ |
1475 | show_fc_host_supported_classes (struct device *dev, |
1476 | struct device_attribute *attr, char *buf) | |
1da177e4 | 1477 | { |
ee959b00 | 1478 | struct Scsi_Host *shost = transport_class_to_shost(dev); |
1da177e4 LT |
1479 | |
1480 | if (fc_host_supported_classes(shost) == FC_COS_UNSPECIFIED) | |
1481 | return snprintf(buf, 20, "unspecified\n"); | |
1482 | ||
1483 | return get_fc_cos_names(fc_host_supported_classes(shost), buf); | |
1484 | } | |
ee959b00 | 1485 | static FC_DEVICE_ATTR(host, supported_classes, S_IRUGO, |
1da177e4 LT |
1486 | show_fc_host_supported_classes, NULL); |
1487 | ||
1488 | static ssize_t | |
ee959b00 TJ |
1489 | show_fc_host_supported_fc4s (struct device *dev, |
1490 | struct device_attribute *attr, char *buf) | |
1da177e4 | 1491 | { |
ee959b00 | 1492 | struct Scsi_Host *shost = transport_class_to_shost(dev); |
1da177e4 LT |
1493 | return (ssize_t)show_fc_fc4s(buf, fc_host_supported_fc4s(shost)); |
1494 | } | |
ee959b00 | 1495 | static FC_DEVICE_ATTR(host, supported_fc4s, S_IRUGO, |
1da177e4 LT |
1496 | show_fc_host_supported_fc4s, NULL); |
1497 | ||
1498 | static ssize_t | |
ee959b00 TJ |
1499 | show_fc_host_supported_speeds (struct device *dev, |
1500 | struct device_attribute *attr, char *buf) | |
1da177e4 | 1501 | { |
ee959b00 | 1502 | struct Scsi_Host *shost = transport_class_to_shost(dev); |
1da177e4 LT |
1503 | |
1504 | if (fc_host_supported_speeds(shost) == FC_PORTSPEED_UNKNOWN) | |
1505 | return snprintf(buf, 20, "unknown\n"); | |
1506 | ||
1507 | return get_fc_port_speed_names(fc_host_supported_speeds(shost), buf); | |
1508 | } | |
ee959b00 | 1509 | static FC_DEVICE_ATTR(host, supported_speeds, S_IRUGO, |
1da177e4 LT |
1510 | show_fc_host_supported_speeds, NULL); |
1511 | ||
1512 | ||
1513 | fc_private_host_rd_attr_cast(node_name, "0x%llx\n", 20, unsigned long long); | |
1514 | fc_private_host_rd_attr_cast(port_name, "0x%llx\n", 20, unsigned long long); | |
6b7281d0 AH |
1515 | fc_private_host_rd_attr_cast(permanent_port_name, "0x%llx\n", 20, |
1516 | unsigned long long); | |
1da177e4 | 1517 | fc_private_host_rd_attr(maxframe_size, "%u bytes\n", 20); |
a53eb5e0 | 1518 | fc_private_host_rd_attr(max_npiv_vports, "%u\n", 20); |
1da177e4 | 1519 | fc_private_host_rd_attr(serial_number, "%s\n", (FC_SERIAL_NUMBER_SIZE +1)); |
bb8ef587 NP |
1520 | fc_private_host_rd_attr(manufacturer, "%s\n", FC_SERIAL_NUMBER_SIZE + 1); |
1521 | fc_private_host_rd_attr(model, "%s\n", FC_SYMBOLIC_NAME_SIZE + 1); | |
1522 | fc_private_host_rd_attr(model_description, "%s\n", FC_SYMBOLIC_NAME_SIZE + 1); | |
1523 | fc_private_host_rd_attr(hardware_version, "%s\n", FC_VERSION_STRING_SIZE + 1); | |
1524 | fc_private_host_rd_attr(driver_version, "%s\n", FC_VERSION_STRING_SIZE + 1); | |
1525 | fc_private_host_rd_attr(firmware_version, "%s\n", FC_VERSION_STRING_SIZE + 1); | |
1526 | fc_private_host_rd_attr(optionrom_version, "%s\n", FC_VERSION_STRING_SIZE + 1); | |
1da177e4 LT |
1527 | |
1528 | ||
1529 | /* Dynamic Host Attributes */ | |
1530 | ||
1531 | static ssize_t | |
ee959b00 TJ |
1532 | show_fc_host_active_fc4s (struct device *dev, |
1533 | struct device_attribute *attr, char *buf) | |
1da177e4 | 1534 | { |
ee959b00 | 1535 | struct Scsi_Host *shost = transport_class_to_shost(dev); |
1da177e4 LT |
1536 | struct fc_internal *i = to_fc_internal(shost->transportt); |
1537 | ||
1538 | if (i->f->get_host_active_fc4s) | |
1539 | i->f->get_host_active_fc4s(shost); | |
1540 | ||
1541 | return (ssize_t)show_fc_fc4s(buf, fc_host_active_fc4s(shost)); | |
1542 | } | |
ee959b00 | 1543 | static FC_DEVICE_ATTR(host, active_fc4s, S_IRUGO, |
1da177e4 LT |
1544 | show_fc_host_active_fc4s, NULL); |
1545 | ||
1546 | static ssize_t | |
ee959b00 TJ |
1547 | show_fc_host_speed (struct device *dev, |
1548 | struct device_attribute *attr, char *buf) | |
1da177e4 | 1549 | { |
ee959b00 | 1550 | struct Scsi_Host *shost = transport_class_to_shost(dev); |
1da177e4 LT |
1551 | struct fc_internal *i = to_fc_internal(shost->transportt); |
1552 | ||
1553 | if (i->f->get_host_speed) | |
1554 | i->f->get_host_speed(shost); | |
1555 | ||
1556 | if (fc_host_speed(shost) == FC_PORTSPEED_UNKNOWN) | |
1557 | return snprintf(buf, 20, "unknown\n"); | |
1558 | ||
1559 | return get_fc_port_speed_names(fc_host_speed(shost), buf); | |
1560 | } | |
ee959b00 | 1561 | static FC_DEVICE_ATTR(host, speed, S_IRUGO, |
1da177e4 LT |
1562 | show_fc_host_speed, NULL); |
1563 | ||
1564 | ||
1565 | fc_host_rd_attr(port_id, "0x%06x\n", 20); | |
1566 | fc_host_rd_enum_attr(port_type, FC_PORTTYPE_MAX_NAMELEN); | |
1567 | fc_host_rd_enum_attr(port_state, FC_PORTSTATE_MAX_NAMELEN); | |
1568 | fc_host_rd_attr_cast(fabric_name, "0x%llx\n", 20, unsigned long long); | |
016131b8 | 1569 | fc_host_rd_attr(symbolic_name, "%s\n", FC_SYMBOLIC_NAME_SIZE + 1); |
1da177e4 | 1570 | |
b8d08210 JS |
1571 | fc_private_host_show_function(system_hostname, "%s\n", |
1572 | FC_SYMBOLIC_NAME_SIZE + 1, ) | |
1573 | fc_host_store_str_function(system_hostname, FC_SYMBOLIC_NAME_SIZE) | |
ee959b00 | 1574 | static FC_DEVICE_ATTR(host, system_hostname, S_IRUGO | S_IWUSR, |
b8d08210 JS |
1575 | show_fc_host_system_hostname, store_fc_host_system_hostname); |
1576 | ||
1da177e4 LT |
1577 | |
1578 | /* Private Host Attributes */ | |
1579 | ||
1580 | static ssize_t | |
ee959b00 TJ |
1581 | show_fc_private_host_tgtid_bind_type(struct device *dev, |
1582 | struct device_attribute *attr, char *buf) | |
1da177e4 | 1583 | { |
ee959b00 | 1584 | struct Scsi_Host *shost = transport_class_to_shost(dev); |
1da177e4 LT |
1585 | const char *name; |
1586 | ||
1587 | name = get_fc_tgtid_bind_type_name(fc_host_tgtid_bind_type(shost)); | |
1588 | if (!name) | |
1589 | return -EINVAL; | |
1590 | return snprintf(buf, FC_BINDTYPE_MAX_NAMELEN, "%s\n", name); | |
1591 | } | |
1592 | ||
d16794f6 JSEC |
1593 | #define get_list_head_entry(pos, head, member) \ |
1594 | pos = list_entry((head)->next, typeof(*pos), member) | |
1595 | ||
1da177e4 | 1596 | static ssize_t |
ee959b00 TJ |
1597 | store_fc_private_host_tgtid_bind_type(struct device *dev, |
1598 | struct device_attribute *attr, const char *buf, size_t count) | |
1da177e4 | 1599 | { |
ee959b00 | 1600 | struct Scsi_Host *shost = transport_class_to_shost(dev); |
d16794f6 | 1601 | struct fc_rport *rport; |
1da177e4 LT |
1602 | enum fc_tgtid_binding_type val; |
1603 | unsigned long flags; | |
1604 | ||
1605 | if (get_fc_tgtid_bind_type_match(buf, &val)) | |
1606 | return -EINVAL; | |
1607 | ||
1608 | /* if changing bind type, purge all unused consistent bindings */ | |
1609 | if (val != fc_host_tgtid_bind_type(shost)) { | |
1610 | spin_lock_irqsave(shost->host_lock, flags); | |
d16794f6 JSEC |
1611 | while (!list_empty(&fc_host_rport_bindings(shost))) { |
1612 | get_list_head_entry(rport, | |
1613 | &fc_host_rport_bindings(shost), peers); | |
aedf3497 JS |
1614 | list_del(&rport->peers); |
1615 | rport->port_state = FC_PORTSTATE_DELETED; | |
1616 | fc_queue_work(shost, &rport->rport_delete_work); | |
d16794f6 | 1617 | } |
1da177e4 LT |
1618 | spin_unlock_irqrestore(shost->host_lock, flags); |
1619 | } | |
1620 | ||
1621 | fc_host_tgtid_bind_type(shost) = val; | |
1622 | return count; | |
1623 | } | |
1624 | ||
ee959b00 | 1625 | static FC_DEVICE_ATTR(host, tgtid_bind_type, S_IRUGO | S_IWUSR, |
1da177e4 LT |
1626 | show_fc_private_host_tgtid_bind_type, |
1627 | store_fc_private_host_tgtid_bind_type); | |
1628 | ||
91ca7b01 | 1629 | static ssize_t |
ee959b00 TJ |
1630 | store_fc_private_host_issue_lip(struct device *dev, |
1631 | struct device_attribute *attr, const char *buf, size_t count) | |
91ca7b01 | 1632 | { |
ee959b00 | 1633 | struct Scsi_Host *shost = transport_class_to_shost(dev); |
91ca7b01 AV |
1634 | struct fc_internal *i = to_fc_internal(shost->transportt); |
1635 | int ret; | |
1636 | ||
1637 | /* ignore any data value written to the attribute */ | |
1638 | if (i->f->issue_fc_host_lip) { | |
1639 | ret = i->f->issue_fc_host_lip(shost); | |
1640 | return ret ? ret: count; | |
1641 | } | |
1642 | ||
1643 | return -ENOENT; | |
1644 | } | |
1645 | ||
ee959b00 | 1646 | static FC_DEVICE_ATTR(host, issue_lip, S_IWUSR, NULL, |
91ca7b01 AV |
1647 | store_fc_private_host_issue_lip); |
1648 | ||
43ca910a MC |
1649 | static ssize_t |
1650 | store_fc_private_host_dev_loss_tmo(struct device *dev, | |
1651 | struct device_attribute *attr, | |
1652 | const char *buf, size_t count) | |
1653 | { | |
1654 | struct Scsi_Host *shost = transport_class_to_shost(dev); | |
1655 | struct fc_host_attrs *fc_host = shost_to_fc_host(shost); | |
1656 | struct fc_rport *rport; | |
1657 | unsigned long val, flags; | |
1658 | int rc; | |
1659 | ||
1660 | rc = fc_str_to_dev_loss(buf, &val); | |
1661 | if (rc) | |
1662 | return rc; | |
1663 | ||
1664 | fc_host_dev_loss_tmo(shost) = val; | |
1665 | spin_lock_irqsave(shost->host_lock, flags); | |
1666 | list_for_each_entry(rport, &fc_host->rports, peers) | |
1667 | fc_rport_set_dev_loss_tmo(rport, val); | |
1668 | spin_unlock_irqrestore(shost->host_lock, flags); | |
1669 | return count; | |
1670 | } | |
a53eb5e0 | 1671 | |
43ca910a MC |
1672 | fc_private_host_show_function(dev_loss_tmo, "%d\n", 20, ); |
1673 | static FC_DEVICE_ATTR(host, dev_loss_tmo, S_IRUGO | S_IWUSR, | |
1674 | show_fc_host_dev_loss_tmo, | |
1675 | store_fc_private_host_dev_loss_tmo); | |
1676 | ||
1677 | fc_private_host_rd_attr(npiv_vports_inuse, "%u\n", 20); | |
a53eb5e0 | 1678 | |
1da177e4 LT |
1679 | /* |
1680 | * Host Statistics Management | |
1681 | */ | |
1682 | ||
134699d2 | 1683 | /* Show a given attribute in the statistics group */ |
1da177e4 | 1684 | static ssize_t |
ee959b00 | 1685 | fc_stat_show(const struct device *dev, char *buf, unsigned long offset) |
1da177e4 | 1686 | { |
ee959b00 | 1687 | struct Scsi_Host *shost = transport_class_to_shost(dev); |
1da177e4 LT |
1688 | struct fc_internal *i = to_fc_internal(shost->transportt); |
1689 | struct fc_host_statistics *stats; | |
1690 | ssize_t ret = -ENOENT; | |
1691 | ||
1692 | if (offset > sizeof(struct fc_host_statistics) || | |
1693 | offset % sizeof(u64) != 0) | |
1694 | WARN_ON(1); | |
1695 | ||
1696 | if (i->f->get_fc_host_stats) { | |
1697 | stats = (i->f->get_fc_host_stats)(shost); | |
1698 | if (stats) | |
1699 | ret = snprintf(buf, 20, "0x%llx\n", | |
1700 | (unsigned long long)*(u64 *)(((u8 *) stats) + offset)); | |
1701 | } | |
1702 | return ret; | |
1703 | } | |
1704 | ||
1705 | ||
1706 | /* generate a read-only statistics attribute */ | |
1707 | #define fc_host_statistic(name) \ | |
ee959b00 TJ |
1708 | static ssize_t show_fcstat_##name(struct device *cd, \ |
1709 | struct device_attribute *attr, \ | |
1710 | char *buf) \ | |
1da177e4 LT |
1711 | { \ |
1712 | return fc_stat_show(cd, buf, \ | |
1713 | offsetof(struct fc_host_statistics, name)); \ | |
1714 | } \ | |
ee959b00 | 1715 | static FC_DEVICE_ATTR(host, name, S_IRUGO, show_fcstat_##name, NULL) |
1da177e4 LT |
1716 | |
1717 | fc_host_statistic(seconds_since_last_reset); | |
1718 | fc_host_statistic(tx_frames); | |
1719 | fc_host_statistic(tx_words); | |
1720 | fc_host_statistic(rx_frames); | |
1721 | fc_host_statistic(rx_words); | |
1722 | fc_host_statistic(lip_count); | |
1723 | fc_host_statistic(nos_count); | |
1724 | fc_host_statistic(error_frames); | |
1725 | fc_host_statistic(dumped_frames); | |
1726 | fc_host_statistic(link_failure_count); | |
1727 | fc_host_statistic(loss_of_sync_count); | |
1728 | fc_host_statistic(loss_of_signal_count); | |
1729 | fc_host_statistic(prim_seq_protocol_err_count); | |
1730 | fc_host_statistic(invalid_tx_word_count); | |
1731 | fc_host_statistic(invalid_crc_count); | |
1732 | fc_host_statistic(fcp_input_requests); | |
1733 | fc_host_statistic(fcp_output_requests); | |
1734 | fc_host_statistic(fcp_control_requests); | |
1735 | fc_host_statistic(fcp_input_megabytes); | |
1736 | fc_host_statistic(fcp_output_megabytes); | |
e58abb0c VD |
1737 | fc_host_statistic(fcp_packet_alloc_failures); |
1738 | fc_host_statistic(fcp_packet_aborts); | |
1739 | fc_host_statistic(fcp_frame_alloc_failures); | |
1740 | fc_host_statistic(fc_no_free_exch); | |
1741 | fc_host_statistic(fc_no_free_exch_xid); | |
1742 | fc_host_statistic(fc_xid_not_found); | |
1743 | fc_host_statistic(fc_xid_busy); | |
1744 | fc_host_statistic(fc_seq_not_found); | |
1745 | fc_host_statistic(fc_non_bls_resp); | |
1da177e4 LT |
1746 | |
1747 | static ssize_t | |
ee959b00 TJ |
1748 | fc_reset_statistics(struct device *dev, struct device_attribute *attr, |
1749 | const char *buf, size_t count) | |
1da177e4 | 1750 | { |
ee959b00 | 1751 | struct Scsi_Host *shost = transport_class_to_shost(dev); |
1da177e4 LT |
1752 | struct fc_internal *i = to_fc_internal(shost->transportt); |
1753 | ||
1754 | /* ignore any data value written to the attribute */ | |
1755 | if (i->f->reset_fc_host_stats) { | |
1756 | i->f->reset_fc_host_stats(shost); | |
1757 | return count; | |
1758 | } | |
1759 | ||
1760 | return -ENOENT; | |
1761 | } | |
ee959b00 | 1762 | static FC_DEVICE_ATTR(host, reset_statistics, S_IWUSR, NULL, |
1da177e4 LT |
1763 | fc_reset_statistics); |
1764 | ||
1da177e4 | 1765 | static struct attribute *fc_statistics_attrs[] = { |
ee959b00 TJ |
1766 | &device_attr_host_seconds_since_last_reset.attr, |
1767 | &device_attr_host_tx_frames.attr, | |
1768 | &device_attr_host_tx_words.attr, | |
1769 | &device_attr_host_rx_frames.attr, | |
1770 | &device_attr_host_rx_words.attr, | |
1771 | &device_attr_host_lip_count.attr, | |
1772 | &device_attr_host_nos_count.attr, | |
1773 | &device_attr_host_error_frames.attr, | |
1774 | &device_attr_host_dumped_frames.attr, | |
1775 | &device_attr_host_link_failure_count.attr, | |
1776 | &device_attr_host_loss_of_sync_count.attr, | |
1777 | &device_attr_host_loss_of_signal_count.attr, | |
1778 | &device_attr_host_prim_seq_protocol_err_count.attr, | |
1779 | &device_attr_host_invalid_tx_word_count.attr, | |
1780 | &device_attr_host_invalid_crc_count.attr, | |
1781 | &device_attr_host_fcp_input_requests.attr, | |
1782 | &device_attr_host_fcp_output_requests.attr, | |
1783 | &device_attr_host_fcp_control_requests.attr, | |
1784 | &device_attr_host_fcp_input_megabytes.attr, | |
1785 | &device_attr_host_fcp_output_megabytes.attr, | |
e58abb0c VD |
1786 | &device_attr_host_fcp_packet_alloc_failures.attr, |
1787 | &device_attr_host_fcp_packet_aborts.attr, | |
1788 | &device_attr_host_fcp_frame_alloc_failures.attr, | |
1789 | &device_attr_host_fc_no_free_exch.attr, | |
1790 | &device_attr_host_fc_no_free_exch_xid.attr, | |
1791 | &device_attr_host_fc_xid_not_found.attr, | |
1792 | &device_attr_host_fc_xid_busy.attr, | |
1793 | &device_attr_host_fc_seq_not_found.attr, | |
1794 | &device_attr_host_fc_non_bls_resp.attr, | |
ee959b00 | 1795 | &device_attr_host_reset_statistics.attr, |
1da177e4 LT |
1796 | NULL |
1797 | }; | |
1798 | ||
1799 | static struct attribute_group fc_statistics_group = { | |
1800 | .name = "statistics", | |
1801 | .attrs = fc_statistics_attrs, | |
1802 | }; | |
1803 | ||
a53eb5e0 JS |
1804 | |
1805 | /* Host Vport Attributes */ | |
1806 | ||
1807 | static int | |
1808 | fc_parse_wwn(const char *ns, u64 *nm) | |
1809 | { | |
1810 | unsigned int i, j; | |
1811 | u8 wwn[8]; | |
1812 | ||
1813 | memset(wwn, 0, sizeof(wwn)); | |
1814 | ||
1815 | /* Validate and store the new name */ | |
1816 | for (i=0, j=0; i < 16; i++) { | |
ecc30990 AS |
1817 | int value; |
1818 | ||
1819 | value = hex_to_bin(*ns++); | |
1820 | if (value >= 0) | |
1821 | j = (j << 4) | value; | |
a53eb5e0 JS |
1822 | else |
1823 | return -EINVAL; | |
1824 | if (i % 2) { | |
1825 | wwn[i/2] = j & 0xff; | |
1826 | j = 0; | |
1827 | } | |
1828 | } | |
1829 | ||
1830 | *nm = wwn_to_u64(wwn); | |
1831 | ||
1832 | return 0; | |
1833 | } | |
1834 | ||
1835 | ||
1836 | /* | |
1837 | * "Short-cut" sysfs variable to create a new vport on a FC Host. | |
1838 | * Input is a string of the form "<WWPN>:<WWNN>". Other attributes | |
1839 | * will default to a NPIV-based FCP_Initiator; The WWNs are specified | |
1840 | * as hex characters, and may *not* contain any prefixes (e.g. 0x, x, etc) | |
1841 | */ | |
1842 | static ssize_t | |
ee959b00 TJ |
1843 | store_fc_host_vport_create(struct device *dev, struct device_attribute *attr, |
1844 | const char *buf, size_t count) | |
a53eb5e0 | 1845 | { |
ee959b00 | 1846 | struct Scsi_Host *shost = transport_class_to_shost(dev); |
a53eb5e0 JS |
1847 | struct fc_vport_identifiers vid; |
1848 | struct fc_vport *vport; | |
1849 | unsigned int cnt=count; | |
1850 | int stat; | |
1851 | ||
1852 | memset(&vid, 0, sizeof(vid)); | |
1853 | ||
1854 | /* count may include a LF at end of string */ | |
1855 | if (buf[cnt-1] == '\n') | |
1856 | cnt--; | |
1857 | ||
1858 | /* validate we have enough characters for WWPN */ | |
1859 | if ((cnt != (16+1+16)) || (buf[16] != ':')) | |
1860 | return -EINVAL; | |
1861 | ||
1862 | stat = fc_parse_wwn(&buf[0], &vid.port_name); | |
1863 | if (stat) | |
1864 | return stat; | |
1865 | ||
1866 | stat = fc_parse_wwn(&buf[17], &vid.node_name); | |
1867 | if (stat) | |
1868 | return stat; | |
1869 | ||
1870 | vid.roles = FC_PORT_ROLE_FCP_INITIATOR; | |
1871 | vid.vport_type = FC_PORTTYPE_NPIV; | |
1872 | /* vid.symbolic_name is already zero/NULL's */ | |
1873 | vid.disable = false; /* always enabled */ | |
1874 | ||
1875 | /* we only allow support on Channel 0 !!! */ | |
a30c3f69 | 1876 | stat = fc_vport_setup(shost, 0, &shost->shost_gendev, &vid, &vport); |
a53eb5e0 JS |
1877 | return stat ? stat : count; |
1878 | } | |
ee959b00 | 1879 | static FC_DEVICE_ATTR(host, vport_create, S_IWUSR, NULL, |
a53eb5e0 JS |
1880 | store_fc_host_vport_create); |
1881 | ||
1882 | ||
1883 | /* | |
1884 | * "Short-cut" sysfs variable to delete a vport on a FC Host. | |
1885 | * Vport is identified by a string containing "<WWPN>:<WWNN>". | |
1886 | * The WWNs are specified as hex characters, and may *not* contain | |
1887 | * any prefixes (e.g. 0x, x, etc) | |
1888 | */ | |
1889 | static ssize_t | |
ee959b00 TJ |
1890 | store_fc_host_vport_delete(struct device *dev, struct device_attribute *attr, |
1891 | const char *buf, size_t count) | |
a53eb5e0 | 1892 | { |
ee959b00 | 1893 | struct Scsi_Host *shost = transport_class_to_shost(dev); |
a53eb5e0 JS |
1894 | struct fc_host_attrs *fc_host = shost_to_fc_host(shost); |
1895 | struct fc_vport *vport; | |
1896 | u64 wwpn, wwnn; | |
1897 | unsigned long flags; | |
1898 | unsigned int cnt=count; | |
1899 | int stat, match; | |
1900 | ||
1901 | /* count may include a LF at end of string */ | |
1902 | if (buf[cnt-1] == '\n') | |
1903 | cnt--; | |
1904 | ||
1905 | /* validate we have enough characters for WWPN */ | |
1906 | if ((cnt != (16+1+16)) || (buf[16] != ':')) | |
1907 | return -EINVAL; | |
1908 | ||
1909 | stat = fc_parse_wwn(&buf[0], &wwpn); | |
1910 | if (stat) | |
1911 | return stat; | |
1912 | ||
1913 | stat = fc_parse_wwn(&buf[17], &wwnn); | |
1914 | if (stat) | |
1915 | return stat; | |
1916 | ||
1917 | spin_lock_irqsave(shost->host_lock, flags); | |
1918 | match = 0; | |
1919 | /* we only allow support on Channel 0 !!! */ | |
1920 | list_for_each_entry(vport, &fc_host->vports, peers) { | |
1921 | if ((vport->channel == 0) && | |
1922 | (vport->port_name == wwpn) && (vport->node_name == wwnn)) { | |
0d9dc7c8 GR |
1923 | if (vport->flags & (FC_VPORT_DEL | FC_VPORT_CREATING)) |
1924 | break; | |
1925 | vport->flags |= FC_VPORT_DELETING; | |
a53eb5e0 JS |
1926 | match = 1; |
1927 | break; | |
1928 | } | |
1929 | } | |
1930 | spin_unlock_irqrestore(shost->host_lock, flags); | |
1931 | ||
1932 | if (!match) | |
1933 | return -ENODEV; | |
1934 | ||
1935 | stat = fc_vport_terminate(vport); | |
1936 | return stat ? stat : count; | |
1937 | } | |
ee959b00 | 1938 | static FC_DEVICE_ATTR(host, vport_delete, S_IWUSR, NULL, |
a53eb5e0 JS |
1939 | store_fc_host_vport_delete); |
1940 | ||
1941 | ||
1da177e4 LT |
1942 | static int fc_host_match(struct attribute_container *cont, |
1943 | struct device *dev) | |
1944 | { | |
1945 | struct Scsi_Host *shost; | |
1946 | struct fc_internal *i; | |
1947 | ||
1948 | if (!scsi_is_host_device(dev)) | |
1949 | return 0; | |
1950 | ||
1951 | shost = dev_to_shost(dev); | |
1952 | if (!shost->transportt || shost->transportt->host_attrs.ac.class | |
1953 | != &fc_host_class.class) | |
1954 | return 0; | |
1955 | ||
1956 | i = to_fc_internal(shost->transportt); | |
1957 | ||
1958 | return &i->t.host_attrs.ac == cont; | |
1959 | } | |
1960 | ||
1961 | static int fc_target_match(struct attribute_container *cont, | |
1962 | struct device *dev) | |
1963 | { | |
1964 | struct Scsi_Host *shost; | |
1965 | struct fc_internal *i; | |
1966 | ||
1967 | if (!scsi_is_target_device(dev)) | |
1968 | return 0; | |
1969 | ||
1970 | shost = dev_to_shost(dev->parent); | |
1971 | if (!shost->transportt || shost->transportt->host_attrs.ac.class | |
1972 | != &fc_host_class.class) | |
1973 | return 0; | |
1974 | ||
1975 | i = to_fc_internal(shost->transportt); | |
1976 | ||
1977 | return &i->t.target_attrs.ac == cont; | |
1978 | } | |
1979 | ||
1980 | static void fc_rport_dev_release(struct device *dev) | |
1981 | { | |
1982 | struct fc_rport *rport = dev_to_rport(dev); | |
1983 | put_device(dev->parent); | |
1984 | kfree(rport); | |
1985 | } | |
1986 | ||
1987 | int scsi_is_fc_rport(const struct device *dev) | |
1988 | { | |
1989 | return dev->release == fc_rport_dev_release; | |
1990 | } | |
1991 | EXPORT_SYMBOL(scsi_is_fc_rport); | |
1992 | ||
1993 | static int fc_rport_match(struct attribute_container *cont, | |
1994 | struct device *dev) | |
1995 | { | |
1996 | struct Scsi_Host *shost; | |
1997 | struct fc_internal *i; | |
1998 | ||
1999 | if (!scsi_is_fc_rport(dev)) | |
2000 | return 0; | |
2001 | ||
2002 | shost = dev_to_shost(dev->parent); | |
2003 | if (!shost->transportt || shost->transportt->host_attrs.ac.class | |
2004 | != &fc_host_class.class) | |
2005 | return 0; | |
2006 | ||
2007 | i = to_fc_internal(shost->transportt); | |
2008 | ||
2009 | return &i->rport_attr_cont.ac == cont; | |
2010 | } | |
2011 | ||
5c44cd2a | 2012 | |
a53eb5e0 JS |
2013 | static void fc_vport_dev_release(struct device *dev) |
2014 | { | |
2015 | struct fc_vport *vport = dev_to_vport(dev); | |
2016 | put_device(dev->parent); /* release kobj parent */ | |
2017 | kfree(vport); | |
2018 | } | |
2019 | ||
62055172 | 2020 | static int scsi_is_fc_vport(const struct device *dev) |
a53eb5e0 JS |
2021 | { |
2022 | return dev->release == fc_vport_dev_release; | |
2023 | } | |
a53eb5e0 JS |
2024 | |
2025 | static int fc_vport_match(struct attribute_container *cont, | |
2026 | struct device *dev) | |
2027 | { | |
2028 | struct fc_vport *vport; | |
2029 | struct Scsi_Host *shost; | |
2030 | struct fc_internal *i; | |
2031 | ||
2032 | if (!scsi_is_fc_vport(dev)) | |
2033 | return 0; | |
2034 | vport = dev_to_vport(dev); | |
2035 | ||
2036 | shost = vport_to_shost(vport); | |
2037 | if (!shost->transportt || shost->transportt->host_attrs.ac.class | |
2038 | != &fc_host_class.class) | |
2039 | return 0; | |
2040 | ||
2041 | i = to_fc_internal(shost->transportt); | |
2042 | return &i->vport_attr_cont.ac == cont; | |
2043 | } | |
2044 | ||
2045 | ||
c829c394 | 2046 | /** |
b6a05c82 | 2047 | * fc_eh_timed_out - FC Transport I/O timeout intercept handler |
c829c394 JS |
2048 | * @scmd: The SCSI command which timed out |
2049 | * | |
2050 | * This routine protects against error handlers getting invoked while a | |
2051 | * rport is in a blocked state, typically due to a temporarily loss of | |
2052 | * connectivity. If the error handlers are allowed to proceed, requests | |
2053 | * to abort i/o, reset the target, etc will likely fail as there is no way | |
2054 | * to communicate with the device to perform the requested function. These | |
2055 | * failures may result in the midlayer taking the device offline, requiring | |
2056 | * manual intervention to restore operation. | |
2057 | * | |
2058 | * This routine, called whenever an i/o times out, validates the state of | |
2059 | * the underlying rport. If the rport is blocked, it returns | |
2060 | * EH_RESET_TIMER, which will continue to reschedule the timeout. | |
2061 | * Eventually, either the device will return, or devloss_tmo will fire, | |
2062 | * and when the timeout then fires, it will be handled normally. | |
2063 | * If the rport is not blocked, normal error handling continues. | |
2064 | * | |
2065 | * Notes: | |
2066 | * This routine assumes no locks are held on entry. | |
eb44820c | 2067 | */ |
b6a05c82 CH |
2068 | enum blk_eh_timer_return |
2069 | fc_eh_timed_out(struct scsi_cmnd *scmd) | |
c829c394 JS |
2070 | { |
2071 | struct fc_rport *rport = starget_to_rport(scsi_target(scmd->device)); | |
2072 | ||
2073 | if (rport->port_state == FC_PORTSTATE_BLOCKED) | |
242f9dcb | 2074 | return BLK_EH_RESET_TIMER; |
c829c394 | 2075 | |
6600593c | 2076 | return BLK_EH_DONE; |
c829c394 | 2077 | } |
b6a05c82 | 2078 | EXPORT_SYMBOL(fc_eh_timed_out); |
c829c394 | 2079 | |
5c44cd2a | 2080 | /* |
bda23253 JS |
2081 | * Called by fc_user_scan to locate an rport on the shost that |
2082 | * matches the channel and target id, and invoke scsi_scan_target() | |
2083 | * on the rport. | |
5c44cd2a | 2084 | */ |
bda23253 | 2085 | static void |
9cb78c16 | 2086 | fc_user_scan_tgt(struct Scsi_Host *shost, uint channel, uint id, u64 lun) |
5c44cd2a JSEC |
2087 | { |
2088 | struct fc_rport *rport; | |
bda23253 JS |
2089 | unsigned long flags; |
2090 | ||
2091 | spin_lock_irqsave(shost->host_lock, flags); | |
5c44cd2a | 2092 | |
e02f3f59 CH |
2093 | list_for_each_entry(rport, &fc_host_rports(shost), peers) { |
2094 | if (rport->scsi_target_id == -1) | |
2095 | continue; | |
5c44cd2a | 2096 | |
0d2fcd9f HR |
2097 | if (rport->port_state != FC_PORTSTATE_ONLINE) |
2098 | continue; | |
2099 | ||
bda23253 JS |
2100 | if ((channel == rport->channel) && |
2101 | (id == rport->scsi_target_id)) { | |
2102 | spin_unlock_irqrestore(shost->host_lock, flags); | |
1d645088 HR |
2103 | scsi_scan_target(&rport->dev, channel, id, lun, |
2104 | SCSI_SCAN_MANUAL); | |
bda23253 | 2105 | return; |
e02f3f59 CH |
2106 | } |
2107 | } | |
2108 | ||
bda23253 JS |
2109 | spin_unlock_irqrestore(shost->host_lock, flags); |
2110 | } | |
2111 | ||
2112 | /* | |
2113 | * Called via sysfs scan routines. Necessary, as the FC transport | |
2114 | * wants to place all target objects below the rport object. So this | |
2115 | * routine must invoke the scsi_scan_target() routine with the rport | |
2116 | * object as the parent. | |
2117 | */ | |
2118 | static int | |
9cb78c16 | 2119 | fc_user_scan(struct Scsi_Host *shost, uint channel, uint id, u64 lun) |
bda23253 JS |
2120 | { |
2121 | uint chlo, chhi; | |
2122 | uint tgtlo, tgthi; | |
2123 | ||
2124 | if (((channel != SCAN_WILD_CARD) && (channel > shost->max_channel)) || | |
2125 | ((id != SCAN_WILD_CARD) && (id >= shost->max_id)) || | |
2126 | ((lun != SCAN_WILD_CARD) && (lun > shost->max_lun))) | |
2127 | return -EINVAL; | |
2128 | ||
2129 | if (channel == SCAN_WILD_CARD) { | |
2130 | chlo = 0; | |
2131 | chhi = shost->max_channel + 1; | |
2132 | } else { | |
2133 | chlo = channel; | |
2134 | chhi = channel + 1; | |
2135 | } | |
2136 | ||
2137 | if (id == SCAN_WILD_CARD) { | |
2138 | tgtlo = 0; | |
2139 | tgthi = shost->max_id; | |
2140 | } else { | |
2141 | tgtlo = id; | |
2142 | tgthi = id + 1; | |
2143 | } | |
2144 | ||
2145 | for ( ; chlo < chhi; chlo++) | |
2146 | for ( ; tgtlo < tgthi; tgtlo++) | |
2147 | fc_user_scan_tgt(shost, chlo, tgtlo, lun); | |
2148 | ||
e02f3f59 | 2149 | return 0; |
5c44cd2a JSEC |
2150 | } |
2151 | ||
1da177e4 LT |
2152 | struct scsi_transport_template * |
2153 | fc_attach_transport(struct fc_function_template *ft) | |
2154 | { | |
1da177e4 | 2155 | int count; |
24669f75 JS |
2156 | struct fc_internal *i = kzalloc(sizeof(struct fc_internal), |
2157 | GFP_KERNEL); | |
1da177e4 LT |
2158 | |
2159 | if (unlikely(!i)) | |
2160 | return NULL; | |
2161 | ||
1da177e4 LT |
2162 | i->t.target_attrs.ac.attrs = &i->starget_attrs[0]; |
2163 | i->t.target_attrs.ac.class = &fc_transport_class.class; | |
2164 | i->t.target_attrs.ac.match = fc_target_match; | |
2165 | i->t.target_size = sizeof(struct fc_starget_attrs); | |
2166 | transport_container_register(&i->t.target_attrs); | |
2167 | ||
2168 | i->t.host_attrs.ac.attrs = &i->host_attrs[0]; | |
2169 | i->t.host_attrs.ac.class = &fc_host_class.class; | |
2170 | i->t.host_attrs.ac.match = fc_host_match; | |
2171 | i->t.host_size = sizeof(struct fc_host_attrs); | |
2172 | if (ft->get_fc_host_stats) | |
2173 | i->t.host_attrs.statistics = &fc_statistics_group; | |
2174 | transport_container_register(&i->t.host_attrs); | |
2175 | ||
2176 | i->rport_attr_cont.ac.attrs = &i->rport_attrs[0]; | |
2177 | i->rport_attr_cont.ac.class = &fc_rport_class.class; | |
2178 | i->rport_attr_cont.ac.match = fc_rport_match; | |
2179 | transport_container_register(&i->rport_attr_cont); | |
2180 | ||
a53eb5e0 JS |
2181 | i->vport_attr_cont.ac.attrs = &i->vport_attrs[0]; |
2182 | i->vport_attr_cont.ac.class = &fc_vport_class.class; | |
2183 | i->vport_attr_cont.ac.match = fc_vport_match; | |
2184 | transport_container_register(&i->vport_attr_cont); | |
2185 | ||
1da177e4 LT |
2186 | i->f = ft; |
2187 | ||
2188 | /* Transport uses the shost workq for scsi scanning */ | |
2189 | i->t.create_work_queue = 1; | |
5c44cd2a | 2190 | |
e02f3f59 | 2191 | i->t.user_scan = fc_user_scan; |
9ef3e4a4 | 2192 | |
1da177e4 LT |
2193 | /* |
2194 | * Setup SCSI Target Attributes. | |
2195 | */ | |
2196 | count = 0; | |
2197 | SETUP_STARGET_ATTRIBUTE_RD(node_name); | |
2198 | SETUP_STARGET_ATTRIBUTE_RD(port_name); | |
2199 | SETUP_STARGET_ATTRIBUTE_RD(port_id); | |
2200 | ||
2201 | BUG_ON(count > FC_STARGET_NUM_ATTRS); | |
2202 | ||
2203 | i->starget_attrs[count] = NULL; | |
2204 | ||
2205 | ||
2206 | /* | |
2207 | * Setup SCSI Host Attributes. | |
2208 | */ | |
2209 | count=0; | |
2210 | SETUP_HOST_ATTRIBUTE_RD(node_name); | |
2211 | SETUP_HOST_ATTRIBUTE_RD(port_name); | |
6b7281d0 | 2212 | SETUP_HOST_ATTRIBUTE_RD(permanent_port_name); |
1da177e4 LT |
2213 | SETUP_HOST_ATTRIBUTE_RD(supported_classes); |
2214 | SETUP_HOST_ATTRIBUTE_RD(supported_fc4s); | |
1da177e4 LT |
2215 | SETUP_HOST_ATTRIBUTE_RD(supported_speeds); |
2216 | SETUP_HOST_ATTRIBUTE_RD(maxframe_size); | |
a53eb5e0 JS |
2217 | if (ft->vport_create) { |
2218 | SETUP_HOST_ATTRIBUTE_RD_NS(max_npiv_vports); | |
2219 | SETUP_HOST_ATTRIBUTE_RD_NS(npiv_vports_inuse); | |
2220 | } | |
1da177e4 | 2221 | SETUP_HOST_ATTRIBUTE_RD(serial_number); |
bb8ef587 NP |
2222 | SETUP_HOST_ATTRIBUTE_RD(manufacturer); |
2223 | SETUP_HOST_ATTRIBUTE_RD(model); | |
2224 | SETUP_HOST_ATTRIBUTE_RD(model_description); | |
2225 | SETUP_HOST_ATTRIBUTE_RD(hardware_version); | |
2226 | SETUP_HOST_ATTRIBUTE_RD(driver_version); | |
2227 | SETUP_HOST_ATTRIBUTE_RD(firmware_version); | |
2228 | SETUP_HOST_ATTRIBUTE_RD(optionrom_version); | |
1da177e4 LT |
2229 | |
2230 | SETUP_HOST_ATTRIBUTE_RD(port_id); | |
2231 | SETUP_HOST_ATTRIBUTE_RD(port_type); | |
2232 | SETUP_HOST_ATTRIBUTE_RD(port_state); | |
2233 | SETUP_HOST_ATTRIBUTE_RD(active_fc4s); | |
2234 | SETUP_HOST_ATTRIBUTE_RD(speed); | |
2235 | SETUP_HOST_ATTRIBUTE_RD(fabric_name); | |
016131b8 | 2236 | SETUP_HOST_ATTRIBUTE_RD(symbolic_name); |
b8d08210 | 2237 | SETUP_HOST_ATTRIBUTE_RW(system_hostname); |
1da177e4 LT |
2238 | |
2239 | /* Transport-managed attributes */ | |
43ca910a | 2240 | SETUP_PRIVATE_HOST_ATTRIBUTE_RW(dev_loss_tmo); |
1da177e4 | 2241 | SETUP_PRIVATE_HOST_ATTRIBUTE_RW(tgtid_bind_type); |
91ca7b01 AV |
2242 | if (ft->issue_fc_host_lip) |
2243 | SETUP_PRIVATE_HOST_ATTRIBUTE_RW(issue_lip); | |
a53eb5e0 JS |
2244 | if (ft->vport_create) |
2245 | SETUP_PRIVATE_HOST_ATTRIBUTE_RW(vport_create); | |
2246 | if (ft->vport_delete) | |
2247 | SETUP_PRIVATE_HOST_ATTRIBUTE_RW(vport_delete); | |
1da177e4 LT |
2248 | |
2249 | BUG_ON(count > FC_HOST_NUM_ATTRS); | |
2250 | ||
2251 | i->host_attrs[count] = NULL; | |
2252 | ||
2253 | /* | |
2254 | * Setup Remote Port Attributes. | |
2255 | */ | |
2256 | count=0; | |
2257 | SETUP_RPORT_ATTRIBUTE_RD(maxframe_size); | |
2258 | SETUP_RPORT_ATTRIBUTE_RD(supported_classes); | |
2259 | SETUP_RPORT_ATTRIBUTE_RW(dev_loss_tmo); | |
2260 | SETUP_PRIVATE_RPORT_ATTRIBUTE_RD(node_name); | |
2261 | SETUP_PRIVATE_RPORT_ATTRIBUTE_RD(port_name); | |
2262 | SETUP_PRIVATE_RPORT_ATTRIBUTE_RD(port_id); | |
2263 | SETUP_PRIVATE_RPORT_ATTRIBUTE_RD(roles); | |
2264 | SETUP_PRIVATE_RPORT_ATTRIBUTE_RD(port_state); | |
2265 | SETUP_PRIVATE_RPORT_ATTRIBUTE_RD(scsi_target_id); | |
fff9d40c | 2266 | SETUP_PRIVATE_RPORT_ATTRIBUTE_RW(fast_io_fail_tmo); |
1da177e4 LT |
2267 | |
2268 | BUG_ON(count > FC_RPORT_NUM_ATTRS); | |
2269 | ||
2270 | i->rport_attrs[count] = NULL; | |
2271 | ||
a53eb5e0 JS |
2272 | /* |
2273 | * Setup Virtual Port Attributes. | |
2274 | */ | |
2275 | count=0; | |
2276 | SETUP_PRIVATE_VPORT_ATTRIBUTE_RD(vport_state); | |
2277 | SETUP_PRIVATE_VPORT_ATTRIBUTE_RD(vport_last_state); | |
2278 | SETUP_PRIVATE_VPORT_ATTRIBUTE_RD(node_name); | |
2279 | SETUP_PRIVATE_VPORT_ATTRIBUTE_RD(port_name); | |
2280 | SETUP_PRIVATE_VPORT_ATTRIBUTE_RD(roles); | |
2281 | SETUP_PRIVATE_VPORT_ATTRIBUTE_RD(vport_type); | |
2282 | SETUP_VPORT_ATTRIBUTE_RW(symbolic_name); | |
2283 | SETUP_VPORT_ATTRIBUTE_WR(vport_delete); | |
2284 | SETUP_VPORT_ATTRIBUTE_WR(vport_disable); | |
2285 | ||
2286 | BUG_ON(count > FC_VPORT_NUM_ATTRS); | |
2287 | ||
2288 | i->vport_attrs[count] = NULL; | |
2289 | ||
1da177e4 LT |
2290 | return &i->t; |
2291 | } | |
2292 | EXPORT_SYMBOL(fc_attach_transport); | |
2293 | ||
2294 | void fc_release_transport(struct scsi_transport_template *t) | |
2295 | { | |
2296 | struct fc_internal *i = to_fc_internal(t); | |
2297 | ||
2298 | transport_container_unregister(&i->t.target_attrs); | |
2299 | transport_container_unregister(&i->t.host_attrs); | |
2300 | transport_container_unregister(&i->rport_attr_cont); | |
a53eb5e0 | 2301 | transport_container_unregister(&i->vport_attr_cont); |
1da177e4 LT |
2302 | |
2303 | kfree(i); | |
2304 | } | |
2305 | EXPORT_SYMBOL(fc_release_transport); | |
2306 | ||
aedf3497 JS |
2307 | /** |
2308 | * fc_queue_work - Queue work to the fc_host workqueue. | |
2309 | * @shost: Pointer to Scsi_Host bound to fc_host. | |
2310 | * @work: Work to queue for execution. | |
2311 | * | |
2312 | * Return value: | |
a0785edf JS |
2313 | * 1 - work queued for execution |
2314 | * 0 - work is already queued | |
2315 | * -EINVAL - work queue doesn't exist | |
eb44820c | 2316 | */ |
aedf3497 JS |
2317 | static int |
2318 | fc_queue_work(struct Scsi_Host *shost, struct work_struct *work) | |
2319 | { | |
2320 | if (unlikely(!fc_host_work_q(shost))) { | |
2321 | printk(KERN_ERR | |
2322 | "ERROR: FC host '%s' attempted to queue work, " | |
2323 | "when no workqueue created.\n", shost->hostt->name); | |
2324 | dump_stack(); | |
2325 | ||
2326 | return -EINVAL; | |
2327 | } | |
2328 | ||
2329 | return queue_work(fc_host_work_q(shost), work); | |
2330 | } | |
2331 | ||
2332 | /** | |
2333 | * fc_flush_work - Flush a fc_host's workqueue. | |
2334 | * @shost: Pointer to Scsi_Host bound to fc_host. | |
eb44820c | 2335 | */ |
aedf3497 JS |
2336 | static void |
2337 | fc_flush_work(struct Scsi_Host *shost) | |
2338 | { | |
2339 | if (!fc_host_work_q(shost)) { | |
2340 | printk(KERN_ERR | |
2341 | "ERROR: FC host '%s' attempted to flush work, " | |
2342 | "when no workqueue created.\n", shost->hostt->name); | |
2343 | dump_stack(); | |
2344 | return; | |
2345 | } | |
2346 | ||
2347 | flush_workqueue(fc_host_work_q(shost)); | |
2348 | } | |
2349 | ||
2350 | /** | |
2351 | * fc_queue_devloss_work - Schedule work for the fc_host devloss workqueue. | |
2352 | * @shost: Pointer to Scsi_Host bound to fc_host. | |
2353 | * @work: Work to queue for execution. | |
2354 | * @delay: jiffies to delay the work queuing | |
2355 | * | |
2356 | * Return value: | |
0f29b966 | 2357 | * 1 on success / 0 already queued / < 0 for error |
eb44820c | 2358 | */ |
aedf3497 | 2359 | static int |
c4028958 | 2360 | fc_queue_devloss_work(struct Scsi_Host *shost, struct delayed_work *work, |
aedf3497 JS |
2361 | unsigned long delay) |
2362 | { | |
2363 | if (unlikely(!fc_host_devloss_work_q(shost))) { | |
2364 | printk(KERN_ERR | |
2365 | "ERROR: FC host '%s' attempted to queue work, " | |
2366 | "when no workqueue created.\n", shost->hostt->name); | |
2367 | dump_stack(); | |
2368 | ||
2369 | return -EINVAL; | |
2370 | } | |
2371 | ||
2372 | return queue_delayed_work(fc_host_devloss_work_q(shost), work, delay); | |
2373 | } | |
2374 | ||
2375 | /** | |
2376 | * fc_flush_devloss - Flush a fc_host's devloss workqueue. | |
2377 | * @shost: Pointer to Scsi_Host bound to fc_host. | |
eb44820c | 2378 | */ |
aedf3497 JS |
2379 | static void |
2380 | fc_flush_devloss(struct Scsi_Host *shost) | |
2381 | { | |
2382 | if (!fc_host_devloss_work_q(shost)) { | |
2383 | printk(KERN_ERR | |
2384 | "ERROR: FC host '%s' attempted to flush work, " | |
2385 | "when no workqueue created.\n", shost->hostt->name); | |
2386 | dump_stack(); | |
2387 | return; | |
2388 | } | |
2389 | ||
2390 | flush_workqueue(fc_host_devloss_work_q(shost)); | |
2391 | } | |
2392 | ||
1da177e4 LT |
2393 | |
2394 | /** | |
eb44820c RL |
2395 | * fc_remove_host - called to terminate any fc_transport-related elements for a scsi host. |
2396 | * @shost: Which &Scsi_Host | |
1da177e4 | 2397 | * |
25985edc | 2398 | * This routine is expected to be called immediately preceding the |
1da177e4 LT |
2399 | * a driver's call to scsi_remove_host(). |
2400 | * | |
2401 | * WARNING: A driver utilizing the fc_transport, which fails to call | |
eb44820c | 2402 | * this routine prior to scsi_remove_host(), will leave dangling |
1da177e4 LT |
2403 | * objects in /sys/class/fc_remote_ports. Access to any of these |
2404 | * objects can result in a system crash !!! | |
2405 | * | |
2406 | * Notes: | |
2407 | * This routine assumes no locks are held on entry. | |
eb44820c | 2408 | */ |
1da177e4 LT |
2409 | void |
2410 | fc_remove_host(struct Scsi_Host *shost) | |
2411 | { | |
a53eb5e0 JS |
2412 | struct fc_vport *vport = NULL, *next_vport = NULL; |
2413 | struct fc_rport *rport = NULL, *next_rport = NULL; | |
aedf3497 JS |
2414 | struct workqueue_struct *work_q; |
2415 | struct fc_host_attrs *fc_host = shost_to_fc_host(shost); | |
a53eb5e0 | 2416 | unsigned long flags; |
a53eb5e0 JS |
2417 | |
2418 | spin_lock_irqsave(shost->host_lock, flags); | |
2419 | ||
2420 | /* Remove any vports */ | |
260f4aed HR |
2421 | list_for_each_entry_safe(vport, next_vport, &fc_host->vports, peers) { |
2422 | vport->flags |= FC_VPORT_DELETING; | |
9ef3e4a4 | 2423 | fc_queue_work(shost, &vport->vport_delete_work); |
260f4aed | 2424 | } |
1da177e4 LT |
2425 | |
2426 | /* Remove any remote ports */ | |
2427 | list_for_each_entry_safe(rport, next_rport, | |
aedf3497 JS |
2428 | &fc_host->rports, peers) { |
2429 | list_del(&rport->peers); | |
2430 | rport->port_state = FC_PORTSTATE_DELETED; | |
2431 | fc_queue_work(shost, &rport->rport_delete_work); | |
2432 | } | |
2433 | ||
1da177e4 | 2434 | list_for_each_entry_safe(rport, next_rport, |
aedf3497 JS |
2435 | &fc_host->rport_bindings, peers) { |
2436 | list_del(&rport->peers); | |
2437 | rport->port_state = FC_PORTSTATE_DELETED; | |
2438 | fc_queue_work(shost, &rport->rport_delete_work); | |
2439 | } | |
2440 | ||
a53eb5e0 JS |
2441 | spin_unlock_irqrestore(shost->host_lock, flags); |
2442 | ||
aedf3497 JS |
2443 | /* flush all scan work items */ |
2444 | scsi_flush_work(shost); | |
2445 | ||
2446 | /* flush all stgt delete, and rport delete work items, then kill it */ | |
2447 | if (fc_host->work_q) { | |
2448 | work_q = fc_host->work_q; | |
2449 | fc_host->work_q = NULL; | |
2450 | destroy_workqueue(work_q); | |
2451 | } | |
2452 | ||
2453 | /* flush all devloss work items, then kill it */ | |
2454 | if (fc_host->devloss_work_q) { | |
2455 | work_q = fc_host->devloss_work_q; | |
2456 | fc_host->devloss_work_q = NULL; | |
2457 | destroy_workqueue(work_q); | |
2458 | } | |
1da177e4 LT |
2459 | } |
2460 | EXPORT_SYMBOL(fc_remove_host); | |
2461 | ||
fff9d40c MC |
2462 | static void fc_terminate_rport_io(struct fc_rport *rport) |
2463 | { | |
2464 | struct Scsi_Host *shost = rport_to_shost(rport); | |
2465 | struct fc_internal *i = to_fc_internal(shost->transportt); | |
2466 | ||
2467 | /* Involve the LLDD if possible to terminate all io on the rport. */ | |
2468 | if (i->f->terminate_rport_io) | |
2469 | i->f->terminate_rport_io(rport); | |
2470 | ||
2471 | /* | |
5d9fb5cc | 2472 | * Must unblock to flush queued IO. scsi-ml will fail incoming reqs. |
fff9d40c | 2473 | */ |
5d9fb5cc | 2474 | scsi_target_unblock(&rport->dev, SDEV_TRANSPORT_OFFLINE); |
fff9d40c | 2475 | } |
aedf3497 JS |
2476 | |
2477 | /** | |
25985edc | 2478 | * fc_starget_delete - called to delete the scsi descendants of an rport |
c4028958 | 2479 | * @work: remote port to be operated on. |
eb44820c RL |
2480 | * |
2481 | * Deletes target and all sdevs. | |
2482 | */ | |
19a7b4ae | 2483 | static void |
c4028958 | 2484 | fc_starget_delete(struct work_struct *work) |
19a7b4ae | 2485 | { |
c4028958 DH |
2486 | struct fc_rport *rport = |
2487 | container_of(work, struct fc_rport, stgt_delete_work); | |
19a7b4ae | 2488 | |
fff9d40c | 2489 | fc_terminate_rport_io(rport); |
19a7b4ae JSEC |
2490 | scsi_remove_target(&rport->dev); |
2491 | } | |
2492 | ||
aedf3497 JS |
2493 | |
2494 | /** | |
2495 | * fc_rport_final_delete - finish rport termination and delete it. | |
c4028958 | 2496 | * @work: remote port to be deleted. |
eb44820c | 2497 | */ |
aedf3497 | 2498 | static void |
c4028958 | 2499 | fc_rport_final_delete(struct work_struct *work) |
aedf3497 | 2500 | { |
c4028958 DH |
2501 | struct fc_rport *rport = |
2502 | container_of(work, struct fc_rport, rport_delete_work); | |
aedf3497 JS |
2503 | struct device *dev = &rport->dev; |
2504 | struct Scsi_Host *shost = rport_to_shost(rport); | |
0f29b966 | 2505 | struct fc_internal *i = to_fc_internal(shost->transportt); |
92740b24 | 2506 | unsigned long flags; |
8798a694 | 2507 | int do_callback = 0; |
aedf3497 | 2508 | |
112f661d NNS |
2509 | fc_terminate_rport_io(rport); |
2510 | ||
aedf3497 | 2511 | /* |
9ef3e4a4 | 2512 | * if a scan is pending, flush the SCSI Host work_q so that |
aedf3497 JS |
2513 | * that we can reclaim the rport scan work element. |
2514 | */ | |
2515 | if (rport->flags & FC_RPORT_SCAN_PENDING) | |
2516 | scsi_flush_work(shost); | |
2517 | ||
92740b24 JS |
2518 | /* |
2519 | * Cancel any outstanding timers. These should really exist | |
2520 | * only when rmmod'ing the LLDD and we're asking for | |
2521 | * immediate termination of the rports | |
2522 | */ | |
2523 | spin_lock_irqsave(shost->host_lock, flags); | |
2524 | if (rport->flags & FC_RPORT_DEVLOSS_PENDING) { | |
2525 | spin_unlock_irqrestore(shost->host_lock, flags); | |
2526 | if (!cancel_delayed_work(&rport->fail_io_work)) | |
2527 | fc_flush_devloss(shost); | |
2528 | if (!cancel_delayed_work(&rport->dev_loss_work)) | |
2529 | fc_flush_devloss(shost); | |
0353e085 | 2530 | cancel_work_sync(&rport->scan_work); |
92740b24 JS |
2531 | spin_lock_irqsave(shost->host_lock, flags); |
2532 | rport->flags &= ~FC_RPORT_DEVLOSS_PENDING; | |
2533 | } | |
2534 | spin_unlock_irqrestore(shost->host_lock, flags); | |
2535 | ||
0f29b966 JS |
2536 | /* Delete SCSI target and sdevs */ |
2537 | if (rport->scsi_target_id != -1) | |
c4028958 | 2538 | fc_starget_delete(&rport->stgt_delete_work); |
92740b24 JS |
2539 | |
2540 | /* | |
2541 | * Notify the driver that the rport is now dead. The LLDD will | |
2542 | * also guarantee that any communication to the rport is terminated | |
4be98c0c JS |
2543 | * |
2544 | * Avoid this call if we already called it when we preserved the | |
2545 | * rport for the binding. | |
92740b24 | 2546 | */ |
8798a694 | 2547 | spin_lock_irqsave(shost->host_lock, flags); |
4be98c0c | 2548 | if (!(rport->flags & FC_RPORT_DEVLOSS_CALLBK_DONE) && |
8798a694 MR |
2549 | (i->f->dev_loss_tmo_callbk)) { |
2550 | rport->flags |= FC_RPORT_DEVLOSS_CALLBK_DONE; | |
2551 | do_callback = 1; | |
2552 | } | |
2553 | spin_unlock_irqrestore(shost->host_lock, flags); | |
2554 | ||
2555 | if (do_callback) | |
0f29b966 | 2556 | i->f->dev_loss_tmo_callbk(rport); |
0f29b966 | 2557 | |
9e4f5e29 JS |
2558 | fc_bsg_remove(rport->rqst_q); |
2559 | ||
aedf3497 JS |
2560 | transport_remove_device(dev); |
2561 | device_del(dev); | |
2562 | transport_destroy_device(dev); | |
4cd38e38 | 2563 | scsi_host_put(shost); /* for fc_host->rport list */ |
3bdad7bd | 2564 | put_device(dev); /* for self-reference */ |
aedf3497 JS |
2565 | } |
2566 | ||
2567 | ||
1da177e4 | 2568 | /** |
558b88fe | 2569 | * fc_remote_port_create - allocates and creates a remote FC port. |
1da177e4 LT |
2570 | * @shost: scsi host the remote port is connected to. |
2571 | * @channel: Channel on shost port connected to. | |
2572 | * @ids: The world wide names, fc address, and FC4 port | |
2573 | * roles for the remote port. | |
2574 | * | |
2575 | * Allocates and creates the remoter port structure, including the | |
2576 | * class and sysfs creation. | |
2577 | * | |
2578 | * Notes: | |
2579 | * This routine assumes no locks are held on entry. | |
eb44820c | 2580 | */ |
44818efb | 2581 | static struct fc_rport * |
558b88fe HR |
2582 | fc_remote_port_create(struct Scsi_Host *shost, int channel, |
2583 | struct fc_rport_identifiers *ids) | |
1da177e4 | 2584 | { |
aedf3497 | 2585 | struct fc_host_attrs *fc_host = shost_to_fc_host(shost); |
1da177e4 LT |
2586 | struct fc_internal *fci = to_fc_internal(shost->transportt); |
2587 | struct fc_rport *rport; | |
2588 | struct device *dev; | |
2589 | unsigned long flags; | |
2590 | int error; | |
2591 | size_t size; | |
2592 | ||
2593 | size = (sizeof(struct fc_rport) + fci->f->dd_fcrport_size); | |
24669f75 | 2594 | rport = kzalloc(size, GFP_KERNEL); |
1da177e4 | 2595 | if (unlikely(!rport)) { |
cadbd4a5 | 2596 | printk(KERN_ERR "%s: allocation failure\n", __func__); |
1da177e4 LT |
2597 | return NULL; |
2598 | } | |
1da177e4 LT |
2599 | |
2600 | rport->maxframe_size = -1; | |
2601 | rport->supported_classes = FC_COS_UNSPECIFIED; | |
43ca910a | 2602 | rport->dev_loss_tmo = fc_host->dev_loss_tmo; |
1da177e4 LT |
2603 | memcpy(&rport->node_name, &ids->node_name, sizeof(rport->node_name)); |
2604 | memcpy(&rport->port_name, &ids->port_name, sizeof(rport->port_name)); | |
2605 | rport->port_id = ids->port_id; | |
2606 | rport->roles = ids->roles; | |
2607 | rport->port_state = FC_PORTSTATE_ONLINE; | |
2608 | if (fci->f->dd_fcrport_size) | |
2609 | rport->dd_data = &rport[1]; | |
2610 | rport->channel = channel; | |
0f29b966 | 2611 | rport->fast_io_fail_tmo = -1; |
1da177e4 | 2612 | |
c4028958 DH |
2613 | INIT_DELAYED_WORK(&rport->dev_loss_work, fc_timeout_deleted_rport); |
2614 | INIT_DELAYED_WORK(&rport->fail_io_work, fc_timeout_fail_rport_io); | |
2615 | INIT_WORK(&rport->scan_work, fc_scsi_scan_rport); | |
2616 | INIT_WORK(&rport->stgt_delete_work, fc_starget_delete); | |
2617 | INIT_WORK(&rport->rport_delete_work, fc_rport_final_delete); | |
1da177e4 LT |
2618 | |
2619 | spin_lock_irqsave(shost->host_lock, flags); | |
2620 | ||
2621 | rport->number = fc_host->next_rport_number++; | |
0c3ae266 CA |
2622 | if ((rport->roles & FC_PORT_ROLE_FCP_TARGET) || |
2623 | (rport->roles & FC_PORT_ROLE_FCP_DUMMY_INITIATOR)) | |
1da177e4 LT |
2624 | rport->scsi_target_id = fc_host->next_target_id++; |
2625 | else | |
2626 | rport->scsi_target_id = -1; | |
aedf3497 | 2627 | list_add_tail(&rport->peers, &fc_host->rports); |
4cd38e38 | 2628 | scsi_host_get(shost); /* for fc_host->rport list */ |
1da177e4 LT |
2629 | |
2630 | spin_unlock_irqrestore(shost->host_lock, flags); | |
2631 | ||
2632 | dev = &rport->dev; | |
3bdad7bd JS |
2633 | device_initialize(dev); /* takes self reference */ |
2634 | dev->parent = get_device(&shost->shost_gendev); /* parent reference */ | |
1da177e4 | 2635 | dev->release = fc_rport_dev_release; |
71610f55 KS |
2636 | dev_set_name(dev, "rport-%d:%d-%d", |
2637 | shost->host_no, channel, rport->number); | |
1da177e4 LT |
2638 | transport_setup_device(dev); |
2639 | ||
2640 | error = device_add(dev); | |
2641 | if (error) { | |
2642 | printk(KERN_ERR "FC Remote Port device_add failed\n"); | |
2643 | goto delete_rport; | |
2644 | } | |
2645 | transport_add_device(dev); | |
2646 | transport_configure_device(dev); | |
2647 | ||
9e4f5e29 JS |
2648 | fc_bsg_rportadd(shost, rport); |
2649 | /* ignore any bsg add error - we just can't do sgio */ | |
2650 | ||
a53eb5e0 | 2651 | if (rport->roles & FC_PORT_ROLE_FCP_TARGET) { |
1da177e4 | 2652 | /* initiate a scan of the target */ |
aedf3497 | 2653 | rport->flags |= FC_RPORT_SCAN_PENDING; |
1da177e4 | 2654 | scsi_queue_work(shost, &rport->scan_work); |
aedf3497 | 2655 | } |
1da177e4 LT |
2656 | |
2657 | return rport; | |
2658 | ||
2659 | delete_rport: | |
2660 | transport_destroy_device(dev); | |
1da177e4 LT |
2661 | spin_lock_irqsave(shost->host_lock, flags); |
2662 | list_del(&rport->peers); | |
4cd38e38 | 2663 | scsi_host_put(shost); /* for fc_host->rport list */ |
1da177e4 LT |
2664 | spin_unlock_irqrestore(shost->host_lock, flags); |
2665 | put_device(dev->parent); | |
2666 | kfree(rport); | |
2667 | return NULL; | |
2668 | } | |
2669 | ||
2670 | /** | |
eb44820c | 2671 | * fc_remote_port_add - notify fc transport of the existence of a remote FC port. |
1da177e4 LT |
2672 | * @shost: scsi host the remote port is connected to. |
2673 | * @channel: Channel on shost port connected to. | |
2674 | * @ids: The world wide names, fc address, and FC4 port | |
2675 | * roles for the remote port. | |
2676 | * | |
2677 | * The LLDD calls this routine to notify the transport of the existence | |
2678 | * of a remote port. The LLDD provides the unique identifiers (wwpn,wwn) | |
2679 | * of the port, it's FC address (port_id), and the FC4 roles that are | |
2680 | * active for the port. | |
2681 | * | |
2682 | * For ports that are FCP targets (aka scsi targets), the FC transport | |
2683 | * maintains consistent target id bindings on behalf of the LLDD. | |
2684 | * A consistent target id binding is an assignment of a target id to | |
2685 | * a remote port identifier, which persists while the scsi host is | |
2686 | * attached. The remote port can disappear, then later reappear, and | |
2687 | * it's target id assignment remains the same. This allows for shifts | |
2688 | * in FC addressing (if binding by wwpn or wwnn) with no apparent | |
2689 | * changes to the scsi subsystem which is based on scsi host number and | |
2690 | * target id values. Bindings are only valid during the attachment of | |
2691 | * the scsi host. If the host detaches, then later re-attaches, target | |
2692 | * id bindings may change. | |
2693 | * | |
2694 | * This routine is responsible for returning a remote port structure. | |
2695 | * The routine will search the list of remote ports it maintains | |
2696 | * internally on behalf of consistent target id mappings. If found, the | |
2697 | * remote port structure will be reused. Otherwise, a new remote port | |
2698 | * structure will be allocated. | |
2699 | * | |
2700 | * Whenever a remote port is allocated, a new fc_remote_port class | |
2701 | * device is created. | |
2702 | * | |
2703 | * Should not be called from interrupt context. | |
2704 | * | |
2705 | * Notes: | |
2706 | * This routine assumes no locks are held on entry. | |
eb44820c | 2707 | */ |
1da177e4 LT |
2708 | struct fc_rport * |
2709 | fc_remote_port_add(struct Scsi_Host *shost, int channel, | |
2710 | struct fc_rport_identifiers *ids) | |
2711 | { | |
19a7b4ae | 2712 | struct fc_internal *fci = to_fc_internal(shost->transportt); |
aedf3497 | 2713 | struct fc_host_attrs *fc_host = shost_to_fc_host(shost); |
1da177e4 LT |
2714 | struct fc_rport *rport; |
2715 | unsigned long flags; | |
2716 | int match = 0; | |
2717 | ||
aedf3497 JS |
2718 | /* ensure any stgt delete functions are done */ |
2719 | fc_flush_work(shost); | |
2720 | ||
19a7b4ae JSEC |
2721 | /* |
2722 | * Search the list of "active" rports, for an rport that has been | |
2723 | * deleted, but we've held off the real delete while the target | |
2724 | * is in a "blocked" state. | |
2725 | */ | |
2726 | spin_lock_irqsave(shost->host_lock, flags); | |
2727 | ||
aedf3497 | 2728 | list_for_each_entry(rport, &fc_host->rports, peers) { |
19a7b4ae | 2729 | |
f091fb8c HR |
2730 | if ((rport->port_state == FC_PORTSTATE_BLOCKED || |
2731 | rport->port_state == FC_PORTSTATE_NOTPRESENT) && | |
19a7b4ae JSEC |
2732 | (rport->channel == channel)) { |
2733 | ||
aedf3497 | 2734 | switch (fc_host->tgtid_bind_type) { |
19a7b4ae JSEC |
2735 | case FC_TGTID_BIND_BY_WWPN: |
2736 | case FC_TGTID_BIND_NONE: | |
2737 | if (rport->port_name == ids->port_name) | |
2738 | match = 1; | |
2739 | break; | |
2740 | case FC_TGTID_BIND_BY_WWNN: | |
2741 | if (rport->node_name == ids->node_name) | |
2742 | match = 1; | |
2743 | break; | |
2744 | case FC_TGTID_BIND_BY_ID: | |
2745 | if (rport->port_id == ids->port_id) | |
2746 | match = 1; | |
2747 | break; | |
2748 | } | |
2749 | ||
2750 | if (match) { | |
19a7b4ae JSEC |
2751 | |
2752 | memcpy(&rport->node_name, &ids->node_name, | |
2753 | sizeof(rport->node_name)); | |
2754 | memcpy(&rport->port_name, &ids->port_name, | |
2755 | sizeof(rport->port_name)); | |
2756 | rport->port_id = ids->port_id; | |
2757 | ||
2758 | rport->port_state = FC_PORTSTATE_ONLINE; | |
2759 | rport->roles = ids->roles; | |
2760 | ||
2761 | spin_unlock_irqrestore(shost->host_lock, flags); | |
2762 | ||
2763 | if (fci->f->dd_fcrport_size) | |
2764 | memset(rport->dd_data, 0, | |
2765 | fci->f->dd_fcrport_size); | |
2766 | ||
2767 | /* | |
92740b24 JS |
2768 | * If we were not a target, cancel the |
2769 | * io terminate and rport timers, and | |
2770 | * we're done. | |
2771 | * | |
2772 | * If we were a target, but our new role | |
2773 | * doesn't indicate a target, leave the | |
2774 | * timers running expecting the role to | |
2775 | * change as the target fully logs in. If | |
2776 | * it doesn't, the target will be torn down. | |
2777 | * | |
2778 | * If we were a target, and our role shows | |
2779 | * we're still a target, cancel the timers | |
2780 | * and kick off a scan. | |
19a7b4ae | 2781 | */ |
19a7b4ae | 2782 | |
92740b24 JS |
2783 | /* was a target, not in roles */ |
2784 | if ((rport->scsi_target_id != -1) && | |
a53eb5e0 | 2785 | (!(ids->roles & FC_PORT_ROLE_FCP_TARGET))) |
92740b24 | 2786 | return rport; |
19a7b4ae JSEC |
2787 | |
2788 | /* | |
92740b24 JS |
2789 | * Stop the fail io and dev_loss timers. |
2790 | * If they flush, the port_state will | |
2791 | * be checked and will NOOP the function. | |
19a7b4ae | 2792 | */ |
0f29b966 JS |
2793 | if (!cancel_delayed_work(&rport->fail_io_work)) |
2794 | fc_flush_devloss(shost); | |
92740b24 | 2795 | if (!cancel_delayed_work(&rport->dev_loss_work)) |
aedf3497 JS |
2796 | fc_flush_devloss(shost); |
2797 | ||
2798 | spin_lock_irqsave(shost->host_lock, flags); | |
2799 | ||
fff9d40c | 2800 | rport->flags &= ~(FC_RPORT_FAST_FAIL_TIMEDOUT | |
4be98c0c JS |
2801 | FC_RPORT_DEVLOSS_PENDING | |
2802 | FC_RPORT_DEVLOSS_CALLBK_DONE); | |
19a7b4ae | 2803 | |
8fb2ef89 MC |
2804 | spin_unlock_irqrestore(shost->host_lock, flags); |
2805 | ||
92740b24 JS |
2806 | /* if target, initiate a scan */ |
2807 | if (rport->scsi_target_id != -1) { | |
5d9fb5cc MC |
2808 | scsi_target_unblock(&rport->dev, |
2809 | SDEV_RUNNING); | |
8fb2ef89 MC |
2810 | spin_lock_irqsave(shost->host_lock, |
2811 | flags); | |
92740b24 JS |
2812 | rport->flags |= FC_RPORT_SCAN_PENDING; |
2813 | scsi_queue_work(shost, | |
2814 | &rport->scan_work); | |
2815 | spin_unlock_irqrestore(shost->host_lock, | |
2816 | flags); | |
8fb2ef89 | 2817 | } |
a0785edf | 2818 | |
9e4f5e29 JS |
2819 | fc_bsg_goose_queue(rport); |
2820 | ||
19a7b4ae JSEC |
2821 | return rport; |
2822 | } | |
2823 | } | |
2824 | } | |
2825 | ||
92740b24 JS |
2826 | /* |
2827 | * Search the bindings array | |
2828 | * Note: if never a FCP target, you won't be on this list | |
2829 | */ | |
aedf3497 | 2830 | if (fc_host->tgtid_bind_type != FC_TGTID_BIND_NONE) { |
1da177e4 LT |
2831 | |
2832 | /* search for a matching consistent binding */ | |
2833 | ||
aedf3497 | 2834 | list_for_each_entry(rport, &fc_host->rport_bindings, |
1da177e4 LT |
2835 | peers) { |
2836 | if (rport->channel != channel) | |
2837 | continue; | |
2838 | ||
aedf3497 | 2839 | switch (fc_host->tgtid_bind_type) { |
1da177e4 LT |
2840 | case FC_TGTID_BIND_BY_WWPN: |
2841 | if (rport->port_name == ids->port_name) | |
2842 | match = 1; | |
2843 | break; | |
2844 | case FC_TGTID_BIND_BY_WWNN: | |
2845 | if (rport->node_name == ids->node_name) | |
2846 | match = 1; | |
2847 | break; | |
2848 | case FC_TGTID_BIND_BY_ID: | |
2849 | if (rport->port_id == ids->port_id) | |
2850 | match = 1; | |
2851 | break; | |
2852 | case FC_TGTID_BIND_NONE: /* to keep compiler happy */ | |
2853 | break; | |
2854 | } | |
2855 | ||
2856 | if (match) { | |
aedf3497 | 2857 | list_move_tail(&rport->peers, &fc_host->rports); |
1da177e4 LT |
2858 | break; |
2859 | } | |
2860 | } | |
2861 | ||
1da177e4 LT |
2862 | if (match) { |
2863 | memcpy(&rport->node_name, &ids->node_name, | |
2864 | sizeof(rport->node_name)); | |
2865 | memcpy(&rport->port_name, &ids->port_name, | |
2866 | sizeof(rport->port_name)); | |
2867 | rport->port_id = ids->port_id; | |
1da177e4 | 2868 | rport->port_state = FC_PORTSTATE_ONLINE; |
fff9d40c | 2869 | rport->flags &= ~FC_RPORT_FAST_FAIL_TIMEDOUT; |
1da177e4 | 2870 | |
19a7b4ae JSEC |
2871 | if (fci->f->dd_fcrport_size) |
2872 | memset(rport->dd_data, 0, | |
2873 | fci->f->dd_fcrport_size); | |
8fb2ef89 MC |
2874 | spin_unlock_irqrestore(shost->host_lock, flags); |
2875 | ||
675195d0 | 2876 | fc_remote_port_rolechg(rport, ids->roles); |
1da177e4 LT |
2877 | return rport; |
2878 | } | |
2879 | } | |
2880 | ||
19a7b4ae JSEC |
2881 | spin_unlock_irqrestore(shost->host_lock, flags); |
2882 | ||
1da177e4 | 2883 | /* No consistent binding found - create new remote port entry */ |
558b88fe | 2884 | rport = fc_remote_port_create(shost, channel, ids); |
1da177e4 LT |
2885 | |
2886 | return rport; | |
2887 | } | |
2888 | EXPORT_SYMBOL(fc_remote_port_add); | |
2889 | ||
1da177e4 LT |
2890 | |
2891 | /** | |
eb44820c | 2892 | * fc_remote_port_delete - notifies the fc transport that a remote port is no longer in existence. |
1da177e4 LT |
2893 | * @rport: The remote port that no longer exists |
2894 | * | |
2895 | * The LLDD calls this routine to notify the transport that a remote | |
2896 | * port is no longer part of the topology. Note: Although a port | |
2897 | * may no longer be part of the topology, it may persist in the remote | |
19a7b4ae | 2898 | * ports displayed by the fc_host. We do this under 2 conditions: |
739aca06 | 2899 | * |
eb44820c | 2900 | * 1) If the port was a scsi target, we delay its deletion by "blocking" it. |
739aca06 MCC |
2901 | * This allows the port to temporarily disappear, then reappear without |
2902 | * disrupting the SCSI device tree attached to it. During the "blocked" | |
2903 | * period the port will still exist. | |
2904 | * | |
eb44820c | 2905 | * 2) If the port was a scsi target and disappears for longer than we |
739aca06 MCC |
2906 | * expect, we'll delete the port and the tear down the SCSI device tree |
2907 | * attached to it. However, we want to semi-persist the target id assigned | |
2908 | * to that port if it eventually does exist. The port structure will | |
2909 | * remain (although with minimal information) so that the target id | |
90311148 | 2910 | * bindings also remain. |
1da177e4 LT |
2911 | * |
2912 | * If the remote port is not an FCP Target, it will be fully torn down | |
2913 | * and deallocated, including the fc_remote_port class device. | |
2914 | * | |
19a7b4ae JSEC |
2915 | * If the remote port is an FCP Target, the port will be placed in a |
2916 | * temporary blocked state. From the LLDD's perspective, the rport no | |
2917 | * longer exists. From the SCSI midlayer's perspective, the SCSI target | |
2918 | * exists, but all sdevs on it are blocked from further I/O. The following | |
eb44820c RL |
2919 | * is then expected. |
2920 | * | |
19a7b4ae JSEC |
2921 | * If the remote port does not return (signaled by a LLDD call to |
2922 | * fc_remote_port_add()) within the dev_loss_tmo timeout, then the | |
2923 | * scsi target is removed - killing all outstanding i/o and removing the | |
134699d2 | 2924 | * scsi devices attached to it. The port structure will be marked Not |
19a7b4ae JSEC |
2925 | * Present and be partially cleared, leaving only enough information to |
2926 | * recognize the remote port relative to the scsi target id binding if | |
2927 | * it later appears. The port will remain as long as there is a valid | |
2928 | * binding (e.g. until the user changes the binding type or unloads the | |
2929 | * scsi host with the binding). | |
1da177e4 | 2930 | * |
19a7b4ae JSEC |
2931 | * If the remote port returns within the dev_loss_tmo value (and matches |
2932 | * according to the target id binding type), the port structure will be | |
2933 | * reused. If it is no longer a SCSI target, the target will be torn | |
2934 | * down. If it continues to be a SCSI target, then the target will be | |
2935 | * unblocked (allowing i/o to be resumed), and a scan will be activated | |
2936 | * to ensure that all luns are detected. | |
2937 | * | |
2938 | * Called from normal process context only - cannot be called from interrupt. | |
1da177e4 LT |
2939 | * |
2940 | * Notes: | |
2941 | * This routine assumes no locks are held on entry. | |
eb44820c | 2942 | */ |
1da177e4 LT |
2943 | void |
2944 | fc_remote_port_delete(struct fc_rport *rport) | |
2945 | { | |
aedf3497 | 2946 | struct Scsi_Host *shost = rport_to_shost(rport); |
36dd288f | 2947 | unsigned long timeout = rport->dev_loss_tmo; |
aedf3497 JS |
2948 | unsigned long flags; |
2949 | ||
2950 | /* | |
2951 | * No need to flush the fc_host work_q's, as all adds are synchronous. | |
2952 | * | |
2953 | * We do need to reclaim the rport scan work element, so eventually | |
2954 | * (in fc_rport_final_delete()) we'll flush the scsi host work_q if | |
2955 | * there's still a scan pending. | |
2956 | */ | |
2957 | ||
2958 | spin_lock_irqsave(shost->host_lock, flags); | |
1da177e4 | 2959 | |
92740b24 | 2960 | if (rport->port_state != FC_PORTSTATE_ONLINE) { |
aedf3497 | 2961 | spin_unlock_irqrestore(shost->host_lock, flags); |
1da177e4 LT |
2962 | return; |
2963 | } | |
2964 | ||
92740b24 JS |
2965 | /* |
2966 | * In the past, we if this was not an FCP-Target, we would | |
2967 | * unconditionally just jump to deleting the rport. | |
2968 | * However, rports can be used as node containers by the LLDD, | |
2969 | * and its not appropriate to just terminate the rport at the | |
2970 | * first sign of a loss in connectivity. The LLDD may want to | |
2971 | * send ELS traffic to re-validate the login. If the rport is | |
2972 | * immediately deleted, it makes it inappropriate for a node | |
2973 | * container. | |
2974 | * So... we now unconditionally wait dev_loss_tmo before | |
2975 | * destroying an rport. | |
2976 | */ | |
2977 | ||
aedf3497 JS |
2978 | rport->port_state = FC_PORTSTATE_BLOCKED; |
2979 | ||
2980 | rport->flags |= FC_RPORT_DEVLOSS_PENDING; | |
2981 | ||
2982 | spin_unlock_irqrestore(shost->host_lock, flags); | |
2983 | ||
19a7b4ae | 2984 | scsi_target_block(&rport->dev); |
1da177e4 | 2985 | |
0f29b966 JS |
2986 | /* see if we need to kill io faster than waiting for device loss */ |
2987 | if ((rport->fast_io_fail_tmo != -1) && | |
fff9d40c | 2988 | (rport->fast_io_fail_tmo < timeout)) |
0f29b966 JS |
2989 | fc_queue_devloss_work(shost, &rport->fail_io_work, |
2990 | rport->fast_io_fail_tmo * HZ); | |
2991 | ||
19a7b4ae | 2992 | /* cap the length the devices can be blocked until they are deleted */ |
aedf3497 | 2993 | fc_queue_devloss_work(shost, &rport->dev_loss_work, timeout * HZ); |
1da177e4 LT |
2994 | } |
2995 | EXPORT_SYMBOL(fc_remote_port_delete); | |
2996 | ||
2997 | /** | |
eb44820c | 2998 | * fc_remote_port_rolechg - notifies the fc transport that the roles on a remote may have changed. |
1da177e4 | 2999 | * @rport: The remote port that changed. |
eb44820c | 3000 | * @roles: New roles for this port. |
1da177e4 | 3001 | * |
eb44820c RL |
3002 | * Description: The LLDD calls this routine to notify the transport that the |
3003 | * roles on a remote port may have changed. The largest effect of this is | |
1da177e4 LT |
3004 | * if a port now becomes a FCP Target, it must be allocated a |
3005 | * scsi target id. If the port is no longer a FCP target, any | |
3006 | * scsi target id value assigned to it will persist in case the | |
3007 | * role changes back to include FCP Target. No changes in the scsi | |
3008 | * midlayer will be invoked if the role changes (in the expectation | |
3009 | * that the role will be resumed. If it doesn't normal error processing | |
3010 | * will take place). | |
3011 | * | |
3012 | * Should not be called from interrupt context. | |
3013 | * | |
3014 | * Notes: | |
3015 | * This routine assumes no locks are held on entry. | |
eb44820c | 3016 | */ |
1da177e4 LT |
3017 | void |
3018 | fc_remote_port_rolechg(struct fc_rport *rport, u32 roles) | |
3019 | { | |
3020 | struct Scsi_Host *shost = rport_to_shost(rport); | |
aedf3497 | 3021 | struct fc_host_attrs *fc_host = shost_to_fc_host(shost); |
1da177e4 LT |
3022 | unsigned long flags; |
3023 | int create = 0; | |
3024 | ||
1da177e4 | 3025 | spin_lock_irqsave(shost->host_lock, flags); |
a53eb5e0 | 3026 | if (roles & FC_PORT_ROLE_FCP_TARGET) { |
19a7b4ae JSEC |
3027 | if (rport->scsi_target_id == -1) { |
3028 | rport->scsi_target_id = fc_host->next_target_id++; | |
3029 | create = 1; | |
a53eb5e0 | 3030 | } else if (!(rport->roles & FC_PORT_ROLE_FCP_TARGET)) |
19a7b4ae | 3031 | create = 1; |
1da177e4 | 3032 | } |
1da177e4 | 3033 | |
19a7b4ae JSEC |
3034 | rport->roles = roles; |
3035 | ||
aedf3497 JS |
3036 | spin_unlock_irqrestore(shost->host_lock, flags); |
3037 | ||
19a7b4ae JSEC |
3038 | if (create) { |
3039 | /* | |
3040 | * There may have been a delete timer running on the | |
3041 | * port. Ensure that it is cancelled as we now know | |
3042 | * the port is an FCP Target. | |
134699d2 | 3043 | * Note: we know the rport exists and is in an online |
19a7b4ae JSEC |
3044 | * state as the LLDD would not have had an rport |
3045 | * reference to pass us. | |
3046 | * | |
3047 | * Take no action on the del_timer failure as the state | |
3048 | * machine state change will validate the | |
3049 | * transaction. | |
3050 | */ | |
0f29b966 JS |
3051 | if (!cancel_delayed_work(&rport->fail_io_work)) |
3052 | fc_flush_devloss(shost); | |
19a7b4ae | 3053 | if (!cancel_delayed_work(&rport->dev_loss_work)) |
aedf3497 JS |
3054 | fc_flush_devloss(shost); |
3055 | ||
3056 | spin_lock_irqsave(shost->host_lock, flags); | |
fff9d40c | 3057 | rport->flags &= ~(FC_RPORT_FAST_FAIL_TIMEDOUT | |
0eecee41 JS |
3058 | FC_RPORT_DEVLOSS_PENDING | |
3059 | FC_RPORT_DEVLOSS_CALLBK_DONE); | |
aedf3497 JS |
3060 | spin_unlock_irqrestore(shost->host_lock, flags); |
3061 | ||
3062 | /* ensure any stgt delete functions are done */ | |
3063 | fc_flush_work(shost); | |
19a7b4ae | 3064 | |
5d9fb5cc | 3065 | scsi_target_unblock(&rport->dev, SDEV_RUNNING); |
1da177e4 | 3066 | /* initiate a scan of the target */ |
aedf3497 JS |
3067 | spin_lock_irqsave(shost->host_lock, flags); |
3068 | rport->flags |= FC_RPORT_SCAN_PENDING; | |
1da177e4 | 3069 | scsi_queue_work(shost, &rport->scan_work); |
aedf3497 | 3070 | spin_unlock_irqrestore(shost->host_lock, flags); |
19a7b4ae | 3071 | } |
1da177e4 LT |
3072 | } |
3073 | EXPORT_SYMBOL(fc_remote_port_rolechg); | |
3074 | ||
3075 | /** | |
eb44820c | 3076 | * fc_timeout_deleted_rport - Timeout handler for a deleted remote port. |
92740b24 | 3077 | * @work: rport target that failed to reappear in the allotted time. |
eb44820c RL |
3078 | * |
3079 | * Description: An attempt to delete a remote port blocks, and if it fails | |
3080 | * to return in the allotted time this gets called. | |
3081 | */ | |
1da177e4 | 3082 | static void |
c4028958 | 3083 | fc_timeout_deleted_rport(struct work_struct *work) |
1da177e4 | 3084 | { |
c4028958 DH |
3085 | struct fc_rport *rport = |
3086 | container_of(work, struct fc_rport, dev_loss_work.work); | |
19a7b4ae | 3087 | struct Scsi_Host *shost = rport_to_shost(rport); |
4be98c0c | 3088 | struct fc_internal *i = to_fc_internal(shost->transportt); |
aedf3497 | 3089 | struct fc_host_attrs *fc_host = shost_to_fc_host(shost); |
19a7b4ae | 3090 | unsigned long flags; |
8798a694 | 3091 | int do_callback = 0; |
1da177e4 | 3092 | |
19a7b4ae | 3093 | spin_lock_irqsave(shost->host_lock, flags); |
1da177e4 | 3094 | |
aedf3497 JS |
3095 | rport->flags &= ~FC_RPORT_DEVLOSS_PENDING; |
3096 | ||
1da177e4 | 3097 | /* |
92740b24 JS |
3098 | * If the port is ONLINE, then it came back. If it was a SCSI |
3099 | * target, validate it still is. If not, tear down the | |
3100 | * scsi_target on it. | |
1da177e4 | 3101 | */ |
aedf3497 | 3102 | if ((rport->port_state == FC_PORTSTATE_ONLINE) && |
92740b24 | 3103 | (rport->scsi_target_id != -1) && |
a53eb5e0 | 3104 | !(rport->roles & FC_PORT_ROLE_FCP_TARGET)) { |
19a7b4ae | 3105 | dev_printk(KERN_ERR, &rport->dev, |
aedf3497 JS |
3106 | "blocked FC remote port time out: no longer" |
3107 | " a FCP target, removing starget\n"); | |
aedf3497 | 3108 | spin_unlock_irqrestore(shost->host_lock, flags); |
5d9fb5cc | 3109 | scsi_target_unblock(&rport->dev, SDEV_TRANSPORT_OFFLINE); |
a0785edf | 3110 | fc_queue_work(shost, &rport->stgt_delete_work); |
19a7b4ae JSEC |
3111 | return; |
3112 | } | |
1da177e4 | 3113 | |
92740b24 | 3114 | /* NOOP state - we're flushing workq's */ |
19a7b4ae JSEC |
3115 | if (rport->port_state != FC_PORTSTATE_BLOCKED) { |
3116 | spin_unlock_irqrestore(shost->host_lock, flags); | |
3117 | dev_printk(KERN_ERR, &rport->dev, | |
92740b24 JS |
3118 | "blocked FC remote port time out: leaving" |
3119 | " rport%s alone\n", | |
3120 | (rport->scsi_target_id != -1) ? " and starget" : ""); | |
19a7b4ae JSEC |
3121 | return; |
3122 | } | |
1da177e4 | 3123 | |
92740b24 JS |
3124 | if ((fc_host->tgtid_bind_type == FC_TGTID_BIND_NONE) || |
3125 | (rport->scsi_target_id == -1)) { | |
aedf3497 JS |
3126 | list_del(&rport->peers); |
3127 | rport->port_state = FC_PORTSTATE_DELETED; | |
19a7b4ae | 3128 | dev_printk(KERN_ERR, &rport->dev, |
92740b24 JS |
3129 | "blocked FC remote port time out: removing" |
3130 | " rport%s\n", | |
3131 | (rport->scsi_target_id != -1) ? " and starget" : ""); | |
aedf3497 JS |
3132 | fc_queue_work(shost, &rport->rport_delete_work); |
3133 | spin_unlock_irqrestore(shost->host_lock, flags); | |
19a7b4ae JSEC |
3134 | return; |
3135 | } | |
1da177e4 | 3136 | |
19a7b4ae JSEC |
3137 | dev_printk(KERN_ERR, &rport->dev, |
3138 | "blocked FC remote port time out: removing target and " | |
3139 | "saving binding\n"); | |
3140 | ||
aedf3497 | 3141 | list_move_tail(&rport->peers, &fc_host->rport_bindings); |
1da177e4 LT |
3142 | |
3143 | /* | |
19a7b4ae JSEC |
3144 | * Note: We do not remove or clear the hostdata area. This allows |
3145 | * host-specific target data to persist along with the | |
3146 | * scsi_target_id. It's up to the host to manage it's hostdata area. | |
1da177e4 | 3147 | */ |
1da177e4 | 3148 | |
19a7b4ae JSEC |
3149 | /* |
3150 | * Reinitialize port attributes that may change if the port comes back. | |
3151 | */ | |
3152 | rport->maxframe_size = -1; | |
3153 | rport->supported_classes = FC_COS_UNSPECIFIED; | |
a53eb5e0 | 3154 | rport->roles = FC_PORT_ROLE_UNKNOWN; |
aedf3497 | 3155 | rport->port_state = FC_PORTSTATE_NOTPRESENT; |
fff9d40c | 3156 | rport->flags &= ~FC_RPORT_FAST_FAIL_TIMEDOUT; |
1da177e4 | 3157 | |
f78badb1 JS |
3158 | /* |
3159 | * Pre-emptively kill I/O rather than waiting for the work queue | |
3160 | * item to teardown the starget. (FCOE libFC folks prefer this | |
3161 | * and to have the rport_port_id still set when it's done). | |
3162 | */ | |
3163 | spin_unlock_irqrestore(shost->host_lock, flags); | |
3164 | fc_terminate_rport_io(rport); | |
3165 | ||
8798a694 MR |
3166 | spin_lock_irqsave(shost->host_lock, flags); |
3167 | ||
3168 | if (rport->port_state == FC_PORTSTATE_NOTPRESENT) { /* still missing */ | |
f78badb1 | 3169 | |
8798a694 MR |
3170 | /* remove the identifiers that aren't used in the consisting binding */ |
3171 | switch (fc_host->tgtid_bind_type) { | |
3172 | case FC_TGTID_BIND_BY_WWPN: | |
3173 | rport->node_name = -1; | |
3174 | rport->port_id = -1; | |
3175 | break; | |
3176 | case FC_TGTID_BIND_BY_WWNN: | |
3177 | rport->port_name = -1; | |
3178 | rport->port_id = -1; | |
3179 | break; | |
3180 | case FC_TGTID_BIND_BY_ID: | |
3181 | rport->node_name = -1; | |
3182 | rport->port_name = -1; | |
3183 | break; | |
3184 | case FC_TGTID_BIND_NONE: /* to keep compiler happy */ | |
3185 | break; | |
3186 | } | |
3187 | ||
3188 | /* | |
3189 | * As this only occurs if the remote port (scsi target) | |
3190 | * went away and didn't come back - we'll remove | |
3191 | * all attached scsi devices. | |
3192 | */ | |
3193 | rport->flags |= FC_RPORT_DEVLOSS_CALLBK_DONE; | |
3194 | fc_queue_work(shost, &rport->stgt_delete_work); | |
3195 | ||
3196 | do_callback = 1; | |
19a7b4ae JSEC |
3197 | } |
3198 | ||
8798a694 | 3199 | spin_unlock_irqrestore(shost->host_lock, flags); |
4be98c0c JS |
3200 | |
3201 | /* | |
3202 | * Notify the driver that the rport is now dead. The LLDD will | |
3203 | * also guarantee that any communication to the rport is terminated | |
3204 | * | |
3205 | * Note: we set the CALLBK_DONE flag above to correspond | |
3206 | */ | |
8798a694 | 3207 | if (do_callback && i->f->dev_loss_tmo_callbk) |
4be98c0c | 3208 | i->f->dev_loss_tmo_callbk(rport); |
1da177e4 | 3209 | } |
1da177e4 | 3210 | |
4be98c0c | 3211 | |
0f29b966 | 3212 | /** |
eb44820c | 3213 | * fc_timeout_fail_rport_io - Timeout handler for a fast io failing on a disconnected SCSI target. |
c4028958 | 3214 | * @work: rport to terminate io on. |
0f29b966 JS |
3215 | * |
3216 | * Notes: Only requests the failure of the io, not that all are flushed | |
3217 | * prior to returning. | |
eb44820c | 3218 | */ |
0f29b966 | 3219 | static void |
c4028958 | 3220 | fc_timeout_fail_rport_io(struct work_struct *work) |
0f29b966 | 3221 | { |
c4028958 DH |
3222 | struct fc_rport *rport = |
3223 | container_of(work, struct fc_rport, fail_io_work.work); | |
0f29b966 JS |
3224 | |
3225 | if (rport->port_state != FC_PORTSTATE_BLOCKED) | |
3226 | return; | |
3227 | ||
fff9d40c MC |
3228 | rport->flags |= FC_RPORT_FAST_FAIL_TIMEDOUT; |
3229 | fc_terminate_rport_io(rport); | |
0f29b966 JS |
3230 | } |
3231 | ||
1da177e4 LT |
3232 | /** |
3233 | * fc_scsi_scan_rport - called to perform a scsi scan on a remote port. | |
c4028958 | 3234 | * @work: remote port to be scanned. |
eb44820c | 3235 | */ |
1da177e4 | 3236 | static void |
c4028958 | 3237 | fc_scsi_scan_rport(struct work_struct *work) |
1da177e4 | 3238 | { |
c4028958 DH |
3239 | struct fc_rport *rport = |
3240 | container_of(work, struct fc_rport, scan_work); | |
aedf3497 | 3241 | struct Scsi_Host *shost = rport_to_shost(rport); |
03f002f7 | 3242 | struct fc_internal *i = to_fc_internal(shost->transportt); |
42e33148 JSEC |
3243 | unsigned long flags; |
3244 | ||
aedf3497 | 3245 | if ((rport->port_state == FC_PORTSTATE_ONLINE) && |
03f002f7 CS |
3246 | (rport->roles & FC_PORT_ROLE_FCP_TARGET) && |
3247 | !(i->f->disable_target_scan)) { | |
aedf3497 | 3248 | scsi_scan_target(&rport->dev, rport->channel, |
1d645088 HR |
3249 | rport->scsi_target_id, SCAN_WILD_CARD, |
3250 | SCSI_SCAN_RESCAN); | |
42e33148 | 3251 | } |
aedf3497 JS |
3252 | |
3253 | spin_lock_irqsave(shost->host_lock, flags); | |
3254 | rport->flags &= ~FC_RPORT_SCAN_PENDING; | |
42e33148 JSEC |
3255 | spin_unlock_irqrestore(shost->host_lock, flags); |
3256 | } | |
3257 | ||
65d430fa | 3258 | /** |
67b46525 SM |
3259 | * fc_block_rport() - Block SCSI eh thread for blocked fc_rport. |
3260 | * @rport: Remote port that scsi_eh is trying to recover. | |
65d430fa CS |
3261 | * |
3262 | * This routine can be called from a FC LLD scsi_eh callback. It | |
3263 | * blocks the scsi_eh thread until the fc_rport leaves the | |
2f2eb587 CS |
3264 | * FC_PORTSTATE_BLOCKED, or the fast_io_fail_tmo fires. This is |
3265 | * necessary to avoid the scsi_eh failing recovery actions for blocked | |
3266 | * rports which would lead to offlined SCSI devices. | |
3267 | * | |
3268 | * Returns: 0 if the fc_rport left the state FC_PORTSTATE_BLOCKED. | |
3269 | * FAST_IO_FAIL if the fast_io_fail_tmo fired, this should be | |
3270 | * passed back to scsi_eh. | |
65d430fa | 3271 | */ |
67b46525 | 3272 | int fc_block_rport(struct fc_rport *rport) |
65d430fa | 3273 | { |
67b46525 | 3274 | struct Scsi_Host *shost = rport_to_shost(rport); |
65d430fa CS |
3275 | unsigned long flags; |
3276 | ||
3277 | spin_lock_irqsave(shost->host_lock, flags); | |
2f2eb587 CS |
3278 | while (rport->port_state == FC_PORTSTATE_BLOCKED && |
3279 | !(rport->flags & FC_RPORT_FAST_FAIL_TIMEDOUT)) { | |
65d430fa CS |
3280 | spin_unlock_irqrestore(shost->host_lock, flags); |
3281 | msleep(1000); | |
3282 | spin_lock_irqsave(shost->host_lock, flags); | |
3283 | } | |
3284 | spin_unlock_irqrestore(shost->host_lock, flags); | |
2f2eb587 CS |
3285 | |
3286 | if (rport->flags & FC_RPORT_FAST_FAIL_TIMEDOUT) | |
3287 | return FAST_IO_FAIL; | |
3288 | ||
3289 | return 0; | |
65d430fa | 3290 | } |
67b46525 SM |
3291 | EXPORT_SYMBOL(fc_block_rport); |
3292 | ||
3293 | /** | |
3294 | * fc_block_scsi_eh - Block SCSI eh thread for blocked fc_rport | |
3295 | * @cmnd: SCSI command that scsi_eh is trying to recover | |
3296 | * | |
3297 | * This routine can be called from a FC LLD scsi_eh callback. It | |
3298 | * blocks the scsi_eh thread until the fc_rport leaves the | |
3299 | * FC_PORTSTATE_BLOCKED, or the fast_io_fail_tmo fires. This is | |
3300 | * necessary to avoid the scsi_eh failing recovery actions for blocked | |
3301 | * rports which would lead to offlined SCSI devices. | |
3302 | * | |
3303 | * Returns: 0 if the fc_rport left the state FC_PORTSTATE_BLOCKED. | |
3304 | * FAST_IO_FAIL if the fast_io_fail_tmo fired, this should be | |
3305 | * passed back to scsi_eh. | |
3306 | */ | |
3307 | int fc_block_scsi_eh(struct scsi_cmnd *cmnd) | |
3308 | { | |
3309 | struct fc_rport *rport = starget_to_rport(scsi_target(cmnd->device)); | |
3310 | ||
8d30371f JT |
3311 | if (WARN_ON_ONCE(!rport)) |
3312 | return FAST_IO_FAIL; | |
3313 | ||
67b46525 SM |
3314 | return fc_block_rport(rport); |
3315 | } | |
65d430fa | 3316 | EXPORT_SYMBOL(fc_block_scsi_eh); |
42e33148 | 3317 | |
a53eb5e0 | 3318 | /** |
a30c3f69 | 3319 | * fc_vport_setup - allocates and creates a FC virtual port. |
a53eb5e0 JS |
3320 | * @shost: scsi host the virtual port is connected to. |
3321 | * @channel: Channel on shost port connected to. | |
3322 | * @pdev: parent device for vport | |
3323 | * @ids: The world wide names, FC4 port roles, etc for | |
3324 | * the virtual port. | |
3325 | * @ret_vport: The pointer to the created vport. | |
3326 | * | |
3327 | * Allocates and creates the vport structure, calls the parent host | |
134699d2 | 3328 | * to instantiate the vport, this completes w/ class and sysfs creation. |
a53eb5e0 JS |
3329 | * |
3330 | * Notes: | |
3331 | * This routine assumes no locks are held on entry. | |
eb44820c | 3332 | */ |
a53eb5e0 | 3333 | static int |
a30c3f69 | 3334 | fc_vport_setup(struct Scsi_Host *shost, int channel, struct device *pdev, |
a53eb5e0 JS |
3335 | struct fc_vport_identifiers *ids, struct fc_vport **ret_vport) |
3336 | { | |
3337 | struct fc_host_attrs *fc_host = shost_to_fc_host(shost); | |
3338 | struct fc_internal *fci = to_fc_internal(shost->transportt); | |
3339 | struct fc_vport *vport; | |
3340 | struct device *dev; | |
3341 | unsigned long flags; | |
3342 | size_t size; | |
3343 | int error; | |
3344 | ||
3345 | *ret_vport = NULL; | |
3346 | ||
3347 | if ( ! fci->f->vport_create) | |
3348 | return -ENOENT; | |
3349 | ||
3350 | size = (sizeof(struct fc_vport) + fci->f->dd_fcvport_size); | |
3351 | vport = kzalloc(size, GFP_KERNEL); | |
3352 | if (unlikely(!vport)) { | |
cadbd4a5 | 3353 | printk(KERN_ERR "%s: allocation failure\n", __func__); |
a53eb5e0 JS |
3354 | return -ENOMEM; |
3355 | } | |
3356 | ||
3357 | vport->vport_state = FC_VPORT_UNKNOWN; | |
3358 | vport->vport_last_state = FC_VPORT_UNKNOWN; | |
3359 | vport->node_name = ids->node_name; | |
3360 | vport->port_name = ids->port_name; | |
3361 | vport->roles = ids->roles; | |
3362 | vport->vport_type = ids->vport_type; | |
3363 | if (fci->f->dd_fcvport_size) | |
3364 | vport->dd_data = &vport[1]; | |
3365 | vport->shost = shost; | |
3366 | vport->channel = channel; | |
3367 | vport->flags = FC_VPORT_CREATING; | |
9ef3e4a4 | 3368 | INIT_WORK(&vport->vport_delete_work, fc_vport_sched_delete); |
a53eb5e0 JS |
3369 | |
3370 | spin_lock_irqsave(shost->host_lock, flags); | |
3371 | ||
3372 | if (fc_host->npiv_vports_inuse >= fc_host->max_npiv_vports) { | |
3373 | spin_unlock_irqrestore(shost->host_lock, flags); | |
3374 | kfree(vport); | |
3375 | return -ENOSPC; | |
3376 | } | |
3377 | fc_host->npiv_vports_inuse++; | |
3378 | vport->number = fc_host->next_vport_number++; | |
3379 | list_add_tail(&vport->peers, &fc_host->vports); | |
4cd38e38 | 3380 | scsi_host_get(shost); /* for fc_host->vport list */ |
a53eb5e0 JS |
3381 | |
3382 | spin_unlock_irqrestore(shost->host_lock, flags); | |
3383 | ||
3384 | dev = &vport->dev; | |
3385 | device_initialize(dev); /* takes self reference */ | |
3386 | dev->parent = get_device(pdev); /* takes parent reference */ | |
3387 | dev->release = fc_vport_dev_release; | |
71610f55 KS |
3388 | dev_set_name(dev, "vport-%d:%d-%d", |
3389 | shost->host_no, channel, vport->number); | |
a53eb5e0 JS |
3390 | transport_setup_device(dev); |
3391 | ||
3392 | error = device_add(dev); | |
3393 | if (error) { | |
3394 | printk(KERN_ERR "FC Virtual Port device_add failed\n"); | |
3395 | goto delete_vport; | |
3396 | } | |
3397 | transport_add_device(dev); | |
3398 | transport_configure_device(dev); | |
3399 | ||
3400 | error = fci->f->vport_create(vport, ids->disable); | |
3401 | if (error) { | |
3402 | printk(KERN_ERR "FC Virtual Port LLDD Create failed\n"); | |
3403 | goto delete_vport_all; | |
3404 | } | |
3405 | ||
3406 | /* | |
3407 | * if the parent isn't the physical adapter's Scsi_Host, ensure | |
134699d2 | 3408 | * the Scsi_Host at least contains a symlink to the vport. |
a53eb5e0 JS |
3409 | */ |
3410 | if (pdev != &shost->shost_gendev) { | |
3411 | error = sysfs_create_link(&shost->shost_gendev.kobj, | |
71610f55 | 3412 | &dev->kobj, dev_name(dev)); |
a53eb5e0 JS |
3413 | if (error) |
3414 | printk(KERN_ERR | |
3415 | "%s: Cannot create vport symlinks for " | |
3416 | "%s, err=%d\n", | |
71610f55 | 3417 | __func__, dev_name(dev), error); |
a53eb5e0 JS |
3418 | } |
3419 | spin_lock_irqsave(shost->host_lock, flags); | |
3420 | vport->flags &= ~FC_VPORT_CREATING; | |
3421 | spin_unlock_irqrestore(shost->host_lock, flags); | |
3422 | ||
3423 | dev_printk(KERN_NOTICE, pdev, | |
71610f55 | 3424 | "%s created via shost%d channel %d\n", dev_name(dev), |
a53eb5e0 JS |
3425 | shost->host_no, channel); |
3426 | ||
3427 | *ret_vport = vport; | |
3428 | ||
3429 | return 0; | |
3430 | ||
3431 | delete_vport_all: | |
3432 | transport_remove_device(dev); | |
3433 | device_del(dev); | |
3434 | delete_vport: | |
3435 | transport_destroy_device(dev); | |
3436 | spin_lock_irqsave(shost->host_lock, flags); | |
3437 | list_del(&vport->peers); | |
4cd38e38 | 3438 | scsi_host_put(shost); /* for fc_host->vport list */ |
a53eb5e0 JS |
3439 | fc_host->npiv_vports_inuse--; |
3440 | spin_unlock_irqrestore(shost->host_lock, flags); | |
3441 | put_device(dev->parent); | |
3442 | kfree(vport); | |
3443 | ||
3444 | return error; | |
3445 | } | |
3446 | ||
a30c3f69 AV |
3447 | /** |
3448 | * fc_vport_create - Admin App or LLDD requests creation of a vport | |
3449 | * @shost: scsi host the virtual port is connected to. | |
3450 | * @channel: channel on shost port connected to. | |
3451 | * @ids: The world wide names, FC4 port roles, etc for | |
3452 | * the virtual port. | |
3453 | * | |
3454 | * Notes: | |
3455 | * This routine assumes no locks are held on entry. | |
3456 | */ | |
3457 | struct fc_vport * | |
3458 | fc_vport_create(struct Scsi_Host *shost, int channel, | |
3459 | struct fc_vport_identifiers *ids) | |
3460 | { | |
3461 | int stat; | |
3462 | struct fc_vport *vport; | |
3463 | ||
3464 | stat = fc_vport_setup(shost, channel, &shost->shost_gendev, | |
3465 | ids, &vport); | |
3466 | return stat ? NULL : vport; | |
3467 | } | |
3468 | EXPORT_SYMBOL(fc_vport_create); | |
a53eb5e0 JS |
3469 | |
3470 | /** | |
3471 | * fc_vport_terminate - Admin App or LLDD requests termination of a vport | |
3472 | * @vport: fc_vport to be terminated | |
3473 | * | |
3474 | * Calls the LLDD vport_delete() function, then deallocates and removes | |
3475 | * the vport from the shost and object tree. | |
3476 | * | |
3477 | * Notes: | |
3478 | * This routine assumes no locks are held on entry. | |
eb44820c | 3479 | */ |
a53eb5e0 JS |
3480 | int |
3481 | fc_vport_terminate(struct fc_vport *vport) | |
3482 | { | |
3483 | struct Scsi_Host *shost = vport_to_shost(vport); | |
3484 | struct fc_host_attrs *fc_host = shost_to_fc_host(shost); | |
3485 | struct fc_internal *i = to_fc_internal(shost->transportt); | |
3486 | struct device *dev = &vport->dev; | |
3487 | unsigned long flags; | |
3488 | int stat; | |
3489 | ||
a53eb5e0 JS |
3490 | if (i->f->vport_delete) |
3491 | stat = i->f->vport_delete(vport); | |
3492 | else | |
3493 | stat = -ENOENT; | |
3494 | ||
3495 | spin_lock_irqsave(shost->host_lock, flags); | |
3496 | vport->flags &= ~FC_VPORT_DELETING; | |
3497 | if (!stat) { | |
3498 | vport->flags |= FC_VPORT_DELETED; | |
3499 | list_del(&vport->peers); | |
3500 | fc_host->npiv_vports_inuse--; | |
4cd38e38 | 3501 | scsi_host_put(shost); /* for fc_host->vport list */ |
a53eb5e0 JS |
3502 | } |
3503 | spin_unlock_irqrestore(shost->host_lock, flags); | |
3504 | ||
3505 | if (stat) | |
3506 | return stat; | |
3507 | ||
3508 | if (dev->parent != &shost->shost_gendev) | |
71610f55 | 3509 | sysfs_remove_link(&shost->shost_gendev.kobj, dev_name(dev)); |
a53eb5e0 JS |
3510 | transport_remove_device(dev); |
3511 | device_del(dev); | |
3512 | transport_destroy_device(dev); | |
3513 | ||
3514 | /* | |
3515 | * Removing our self-reference should mean our | |
3516 | * release function gets called, which will drop the remaining | |
3517 | * parent reference and free the data structure. | |
3518 | */ | |
3519 | put_device(dev); /* for self-reference */ | |
3520 | ||
3521 | return 0; /* SUCCESS */ | |
3522 | } | |
3523 | EXPORT_SYMBOL(fc_vport_terminate); | |
3524 | ||
9ef3e4a4 JS |
3525 | /** |
3526 | * fc_vport_sched_delete - workq-based delete request for a vport | |
9ef3e4a4 | 3527 | * @work: vport to be deleted. |
eb44820c | 3528 | */ |
9ef3e4a4 JS |
3529 | static void |
3530 | fc_vport_sched_delete(struct work_struct *work) | |
3531 | { | |
3532 | struct fc_vport *vport = | |
3533 | container_of(work, struct fc_vport, vport_delete_work); | |
3534 | int stat; | |
3535 | ||
3536 | stat = fc_vport_terminate(vport); | |
3537 | if (stat) | |
3538 | dev_printk(KERN_ERR, vport->dev.parent, | |
3539 | "%s: %s could not be deleted created via " | |
cadbd4a5 | 3540 | "shost%d channel %d - error %d\n", __func__, |
71610f55 | 3541 | dev_name(&vport->dev), vport->shost->host_no, |
9ef3e4a4 JS |
3542 | vport->channel, stat); |
3543 | } | |
3544 | ||
a53eb5e0 | 3545 | |
9e4f5e29 JS |
3546 | /* |
3547 | * BSG support | |
3548 | */ | |
3549 | ||
9e4f5e29 JS |
3550 | /** |
3551 | * fc_bsg_job_timeout - handler for when a bsg request timesout | |
3552 | * @req: request that timed out | |
3553 | */ | |
3554 | static enum blk_eh_timer_return | |
3555 | fc_bsg_job_timeout(struct request *req) | |
3556 | { | |
b468b6a4 | 3557 | struct bsg_job *job = blk_mq_rq_to_pdu(req); |
cd21c605 | 3558 | struct Scsi_Host *shost = fc_bsg_to_shost(job); |
1d69b122 | 3559 | struct fc_rport *rport = fc_bsg_to_rport(job); |
9e4f5e29 | 3560 | struct fc_internal *i = to_fc_internal(shost->transportt); |
ad7660cc | 3561 | int err = 0, inflight = 0; |
9e4f5e29 | 3562 | |
1d69b122 | 3563 | if (rport && rport->port_state == FC_PORTSTATE_BLOCKED) |
9e4f5e29 JS |
3564 | return BLK_EH_RESET_TIMER; |
3565 | ||
fb6f7c8d | 3566 | inflight = bsg_job_get(job); |
9e4f5e29 | 3567 | |
ad7660cc | 3568 | if (inflight && i->f->bsg_timeout) { |
9e4f5e29 JS |
3569 | /* call LLDD to abort the i/o as it has timed out */ |
3570 | err = i->f->bsg_timeout(job); | |
b8f08645 | 3571 | if (err == -EAGAIN) { |
fb6f7c8d | 3572 | bsg_job_put(job); |
b8f08645 SS |
3573 | return BLK_EH_RESET_TIMER; |
3574 | } else if (err) | |
9e4f5e29 JS |
3575 | printk(KERN_ERR "ERROR: FC BSG request timeout - LLD " |
3576 | "abort failed with status %d\n", err); | |
3577 | } | |
3578 | ||
9e4f5e29 | 3579 | /* the blk_end_sync_io() doesn't check the error */ |
1fc2b62e | 3580 | if (inflight) |
cd2f076f | 3581 | blk_mq_end_request(req, BLK_STS_IOERR); |
1fc2b62e | 3582 | return BLK_EH_DONE; |
9e4f5e29 JS |
3583 | } |
3584 | ||
9e4f5e29 JS |
3585 | /** |
3586 | * fc_bsg_host_dispatch - process fc host bsg requests and dispatch to LLDD | |
3587 | * @shost: scsi host rport attached to | |
3588 | * @job: bsg job to be processed | |
3589 | */ | |
a0f4bd7f | 3590 | static int fc_bsg_host_dispatch(struct Scsi_Host *shost, struct bsg_job *job) |
9e4f5e29 JS |
3591 | { |
3592 | struct fc_internal *i = to_fc_internal(shost->transportt); | |
01e0e15c JT |
3593 | struct fc_bsg_request *bsg_request = job->request; |
3594 | struct fc_bsg_reply *bsg_reply = job->reply; | |
9e4f5e29 JS |
3595 | int cmdlen = sizeof(uint32_t); /* start with length of msgcode */ |
3596 | int ret; | |
3597 | ||
01e0e15c JT |
3598 | /* check if we really have all the request data needed */ |
3599 | if (job->request_len < cmdlen) { | |
3600 | ret = -ENOMSG; | |
3601 | goto fail_host_msg; | |
3602 | } | |
3603 | ||
9e4f5e29 | 3604 | /* Validate the host command */ |
01e0e15c | 3605 | switch (bsg_request->msgcode) { |
9e4f5e29 JS |
3606 | case FC_BSG_HST_ADD_RPORT: |
3607 | cmdlen += sizeof(struct fc_bsg_host_add_rport); | |
3608 | break; | |
3609 | ||
3610 | case FC_BSG_HST_DEL_RPORT: | |
3611 | cmdlen += sizeof(struct fc_bsg_host_del_rport); | |
3612 | break; | |
3613 | ||
3614 | case FC_BSG_HST_ELS_NOLOGIN: | |
3615 | cmdlen += sizeof(struct fc_bsg_host_els); | |
3616 | /* there better be a xmt and rcv payloads */ | |
3617 | if ((!job->request_payload.payload_len) || | |
3618 | (!job->reply_payload.payload_len)) { | |
3619 | ret = -EINVAL; | |
3620 | goto fail_host_msg; | |
3621 | } | |
3622 | break; | |
3623 | ||
3624 | case FC_BSG_HST_CT: | |
3625 | cmdlen += sizeof(struct fc_bsg_host_ct); | |
3626 | /* there better be xmt and rcv payloads */ | |
3627 | if ((!job->request_payload.payload_len) || | |
3628 | (!job->reply_payload.payload_len)) { | |
3629 | ret = -EINVAL; | |
3630 | goto fail_host_msg; | |
3631 | } | |
3632 | break; | |
3633 | ||
3634 | case FC_BSG_HST_VENDOR: | |
3635 | cmdlen += sizeof(struct fc_bsg_host_vendor); | |
3636 | if ((shost->hostt->vendor_id == 0L) || | |
01e0e15c | 3637 | (bsg_request->rqst_data.h_vendor.vendor_id != |
9e4f5e29 JS |
3638 | shost->hostt->vendor_id)) { |
3639 | ret = -ESRCH; | |
3640 | goto fail_host_msg; | |
3641 | } | |
3642 | break; | |
3643 | ||
3644 | default: | |
3645 | ret = -EBADR; | |
3646 | goto fail_host_msg; | |
3647 | } | |
3648 | ||
9e4f5e29 JS |
3649 | ret = i->f->bsg_request(job); |
3650 | if (!ret) | |
a0f4bd7f | 3651 | return 0; |
9e4f5e29 JS |
3652 | |
3653 | fail_host_msg: | |
3654 | /* return the errno failure code as the only status */ | |
3655 | BUG_ON(job->reply_len < sizeof(uint32_t)); | |
01e0e15c JT |
3656 | bsg_reply->reply_payload_rcv_len = 0; |
3657 | bsg_reply->result = ret; | |
9e4f5e29 | 3658 | job->reply_len = sizeof(uint32_t); |
06548160 | 3659 | bsg_job_done(job, bsg_reply->result, |
1abaede7 | 3660 | bsg_reply->reply_payload_rcv_len); |
a0f4bd7f | 3661 | return 0; |
9e4f5e29 JS |
3662 | } |
3663 | ||
3664 | ||
3665 | /* | |
3666 | * fc_bsg_goose_queue - restart rport queue in case it was stopped | |
3667 | * @rport: rport to be restarted | |
3668 | */ | |
3669 | static void | |
3670 | fc_bsg_goose_queue(struct fc_rport *rport) | |
3671 | { | |
378eeade | 3672 | struct request_queue *q = rport->rqst_q; |
9e4f5e29 | 3673 | |
cd2f076f JA |
3674 | if (q) |
3675 | blk_mq_run_hw_queues(q, true); | |
9e4f5e29 JS |
3676 | } |
3677 | ||
9e4f5e29 JS |
3678 | /** |
3679 | * fc_bsg_rport_dispatch - process rport bsg requests and dispatch to LLDD | |
3680 | * @shost: scsi host rport attached to | |
9e4f5e29 JS |
3681 | * @job: bsg job to be processed |
3682 | */ | |
a0f4bd7f | 3683 | static int fc_bsg_rport_dispatch(struct Scsi_Host *shost, struct bsg_job *job) |
9e4f5e29 JS |
3684 | { |
3685 | struct fc_internal *i = to_fc_internal(shost->transportt); | |
01e0e15c JT |
3686 | struct fc_bsg_request *bsg_request = job->request; |
3687 | struct fc_bsg_reply *bsg_reply = job->reply; | |
9e4f5e29 JS |
3688 | int cmdlen = sizeof(uint32_t); /* start with length of msgcode */ |
3689 | int ret; | |
3690 | ||
01e0e15c JT |
3691 | /* check if we really have all the request data needed */ |
3692 | if (job->request_len < cmdlen) { | |
3693 | ret = -ENOMSG; | |
3694 | goto fail_rport_msg; | |
3695 | } | |
3696 | ||
9e4f5e29 | 3697 | /* Validate the rport command */ |
01e0e15c | 3698 | switch (bsg_request->msgcode) { |
9e4f5e29 JS |
3699 | case FC_BSG_RPT_ELS: |
3700 | cmdlen += sizeof(struct fc_bsg_rport_els); | |
3701 | goto check_bidi; | |
3702 | ||
3703 | case FC_BSG_RPT_CT: | |
3704 | cmdlen += sizeof(struct fc_bsg_rport_ct); | |
3705 | check_bidi: | |
3706 | /* there better be xmt and rcv payloads */ | |
3707 | if ((!job->request_payload.payload_len) || | |
3708 | (!job->reply_payload.payload_len)) { | |
3709 | ret = -EINVAL; | |
3710 | goto fail_rport_msg; | |
3711 | } | |
3712 | break; | |
3713 | default: | |
3714 | ret = -EBADR; | |
3715 | goto fail_rport_msg; | |
3716 | } | |
3717 | ||
9e4f5e29 JS |
3718 | ret = i->f->bsg_request(job); |
3719 | if (!ret) | |
a0f4bd7f | 3720 | return 0; |
9e4f5e29 JS |
3721 | |
3722 | fail_rport_msg: | |
3723 | /* return the errno failure code as the only status */ | |
3724 | BUG_ON(job->reply_len < sizeof(uint32_t)); | |
01e0e15c JT |
3725 | bsg_reply->reply_payload_rcv_len = 0; |
3726 | bsg_reply->result = ret; | |
9e4f5e29 | 3727 | job->reply_len = sizeof(uint32_t); |
06548160 | 3728 | bsg_job_done(job, bsg_reply->result, |
1abaede7 | 3729 | bsg_reply->reply_payload_rcv_len); |
a0f4bd7f | 3730 | return 0; |
9e4f5e29 JS |
3731 | } |
3732 | ||
a0f4bd7f | 3733 | static int fc_bsg_dispatch(struct bsg_job *job) |
9e4f5e29 | 3734 | { |
a0f4bd7f | 3735 | struct Scsi_Host *shost = fc_bsg_to_shost(job); |
9e4f5e29 | 3736 | |
a0f4bd7f JT |
3737 | if (scsi_is_fc_rport(job->dev)) |
3738 | return fc_bsg_rport_dispatch(shost, job); | |
3739 | else | |
3740 | return fc_bsg_host_dispatch(shost, job); | |
9e4f5e29 JS |
3741 | } |
3742 | ||
cd2f076f JA |
3743 | static blk_status_t fc_bsg_rport_prep(struct fc_rport *rport) |
3744 | { | |
3745 | if (rport->port_state == FC_PORTSTATE_BLOCKED && | |
3746 | !(rport->flags & FC_RPORT_FAST_FAIL_TIMEDOUT)) | |
3747 | return BLK_STS_RESOURCE; | |
3748 | ||
3749 | if (rport->port_state != FC_PORTSTATE_ONLINE) | |
3750 | return BLK_STS_IOERR; | |
3751 | ||
3752 | return BLK_STS_OK; | |
3753 | } | |
3754 | ||
3755 | ||
3756 | static int fc_bsg_dispatch_prep(struct bsg_job *job) | |
3757 | { | |
3758 | struct fc_rport *rport = fc_bsg_to_rport(job); | |
3759 | blk_status_t ret; | |
3760 | ||
3761 | ret = fc_bsg_rport_prep(rport); | |
3762 | switch (ret) { | |
3763 | case BLK_STS_OK: | |
3764 | break; | |
3765 | case BLK_STS_RESOURCE: | |
3766 | return -EAGAIN; | |
3767 | default: | |
3768 | return -EIO; | |
3769 | } | |
3770 | ||
3771 | return fc_bsg_dispatch(job); | |
3772 | } | |
3773 | ||
9e4f5e29 JS |
3774 | /** |
3775 | * fc_bsg_hostadd - Create and add the bsg hooks so we can receive requests | |
3776 | * @shost: shost for fc_host | |
3777 | * @fc_host: fc_host adding the structures to | |
3778 | */ | |
3779 | static int | |
3780 | fc_bsg_hostadd(struct Scsi_Host *shost, struct fc_host_attrs *fc_host) | |
3781 | { | |
3782 | struct device *dev = &shost->shost_gendev; | |
3783 | struct fc_internal *i = to_fc_internal(shost->transportt); | |
3784 | struct request_queue *q; | |
3c559ea8 | 3785 | char bsg_name[20]; |
9e4f5e29 JS |
3786 | |
3787 | fc_host->rqst_q = NULL; | |
3788 | ||
3789 | if (!i->f->bsg_request) | |
3790 | return -ENOTSUPP; | |
3791 | ||
3792 | snprintf(bsg_name, sizeof(bsg_name), | |
3793 | "fc_host%d", shost->host_no); | |
3794 | ||
aae3b069 JA |
3795 | q = bsg_setup_queue(dev, bsg_name, fc_bsg_dispatch, fc_bsg_job_timeout, |
3796 | i->f->dd_bsg_size); | |
8ae94eb6 | 3797 | if (IS_ERR(q)) { |
a0f4bd7f JT |
3798 | dev_err(dev, |
3799 | "fc_host%d: bsg interface failed to initialize - setup queue\n", | |
3800 | shost->host_no); | |
8ae94eb6 | 3801 | return PTR_ERR(q); |
9e4f5e29 | 3802 | } |
8ae94eb6 | 3803 | __scsi_init_queue(shost, q); |
a0f4bd7f | 3804 | blk_queue_rq_timeout(q, FC_DEFAULT_BSG_TIMEOUT); |
9e4f5e29 JS |
3805 | fc_host->rqst_q = q; |
3806 | return 0; | |
3807 | } | |
3808 | ||
9e4f5e29 JS |
3809 | /** |
3810 | * fc_bsg_rportadd - Create and add the bsg hooks so we can receive requests | |
3811 | * @shost: shost that rport is attached to | |
3812 | * @rport: rport that the bsg hooks are being attached to | |
3813 | */ | |
3814 | static int | |
3815 | fc_bsg_rportadd(struct Scsi_Host *shost, struct fc_rport *rport) | |
3816 | { | |
3817 | struct device *dev = &rport->dev; | |
3818 | struct fc_internal *i = to_fc_internal(shost->transportt); | |
3819 | struct request_queue *q; | |
9e4f5e29 JS |
3820 | |
3821 | rport->rqst_q = NULL; | |
3822 | ||
3823 | if (!i->f->bsg_request) | |
3824 | return -ENOTSUPP; | |
3825 | ||
cd2f076f | 3826 | q = bsg_setup_queue(dev, dev_name(dev), fc_bsg_dispatch_prep, |
aae3b069 | 3827 | fc_bsg_job_timeout, i->f->dd_bsg_size); |
8ae94eb6 | 3828 | if (IS_ERR(q)) { |
a0f4bd7f | 3829 | dev_err(dev, "failed to setup bsg queue\n"); |
8ae94eb6 | 3830 | return PTR_ERR(q); |
9e4f5e29 | 3831 | } |
8ae94eb6 | 3832 | __scsi_init_queue(shost, q); |
a0f4bd7f | 3833 | blk_queue_rq_timeout(q, BLK_DEFAULT_SG_TIMEOUT); |
9e4f5e29 JS |
3834 | rport->rqst_q = q; |
3835 | return 0; | |
3836 | } | |
3837 | ||
3838 | ||
3839 | /** | |
3840 | * fc_bsg_remove - Deletes the bsg hooks on fchosts/rports | |
3841 | * @q: the request_queue that is to be torn down. | |
78d16341 JS |
3842 | * |
3843 | * Notes: | |
3844 | * Before unregistering the queue empty any requests that are blocked | |
3845 | * | |
3846 | * | |
9e4f5e29 JS |
3847 | */ |
3848 | static void | |
3849 | fc_bsg_remove(struct request_queue *q) | |
3850 | { | |
5e28b8d8 | 3851 | bsg_remove_queue(q); |
9e4f5e29 JS |
3852 | } |
3853 | ||
3854 | ||
9ef3e4a4 JS |
3855 | /* Original Author: Martin Hicks */ |
3856 | MODULE_AUTHOR("James Smart"); | |
1da177e4 LT |
3857 | MODULE_DESCRIPTION("FC Transport Attributes"); |
3858 | MODULE_LICENSE("GPL"); | |
3859 | ||
3860 | module_init(fc_transport_init); | |
3861 | module_exit(fc_transport_exit); |