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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> |
547aab51 | 25 | #include <uapi/scsi/fc/fc_els.h> |
1da177e4 LT |
26 | #include "scsi_priv.h" |
27 | ||
aedf3497 | 28 | static int fc_queue_work(struct Scsi_Host *, struct work_struct *); |
9ef3e4a4 | 29 | static void fc_vport_sched_delete(struct work_struct *work); |
a30c3f69 | 30 | static int fc_vport_setup(struct Scsi_Host *shost, int channel, |
a53eb5e0 JS |
31 | struct device *pdev, struct fc_vport_identifiers *ids, |
32 | struct fc_vport **vport); | |
9e4f5e29 JS |
33 | static int fc_bsg_hostadd(struct Scsi_Host *, struct fc_host_attrs *); |
34 | static int fc_bsg_rportadd(struct Scsi_Host *, struct fc_rport *); | |
35 | static void fc_bsg_remove(struct request_queue *); | |
36 | static void fc_bsg_goose_queue(struct fc_rport *); | |
3dcfe0de SS |
37 | static void fc_li_stats_update(struct fc_fn_li_desc *li_desc, |
38 | struct fc_fpin_stats *stats); | |
39 | static void fc_delivery_stats_update(u32 reason_code, | |
40 | struct fc_fpin_stats *stats); | |
41 | static void fc_cn_stats_update(u16 event_type, struct fc_fpin_stats *stats); | |
a53eb5e0 | 42 | |
43ca910a MC |
43 | /* |
44 | * Module Parameters | |
45 | */ | |
46 | ||
47 | /* | |
48 | * dev_loss_tmo: the default number of seconds that the FC transport | |
49 | * should insulate the loss of a remote port. | |
50 | * The maximum will be capped by the value of SCSI_DEVICE_BLOCK_MAX_TIMEOUT. | |
51 | */ | |
52 | static unsigned int fc_dev_loss_tmo = 60; /* seconds */ | |
53 | ||
54 | module_param_named(dev_loss_tmo, fc_dev_loss_tmo, uint, S_IRUGO|S_IWUSR); | |
55 | MODULE_PARM_DESC(dev_loss_tmo, | |
56 | "Maximum number of seconds that the FC transport should" | |
57 | " insulate the loss of a remote port. Once this value is" | |
58 | " exceeded, the scsi target is removed. Value should be" | |
59 | " between 1 and SCSI_DEVICE_BLOCK_MAX_TIMEOUT if" | |
60 | " fast_io_fail_tmo is not set."); | |
61 | ||
1da177e4 LT |
62 | /* |
63 | * Redefine so that we can have same named attributes in the | |
64 | * sdev/starget/host objects. | |
65 | */ | |
ee959b00 TJ |
66 | #define FC_DEVICE_ATTR(_prefix,_name,_mode,_show,_store) \ |
67 | struct device_attribute device_attr_##_prefix##_##_name = \ | |
1da177e4 LT |
68 | __ATTR(_name,_mode,_show,_store) |
69 | ||
70 | #define fc_enum_name_search(title, table_type, table) \ | |
71 | static const char *get_fc_##title##_name(enum table_type table_key) \ | |
72 | { \ | |
73 | int i; \ | |
74 | char *name = NULL; \ | |
75 | \ | |
6391a113 | 76 | for (i = 0; i < ARRAY_SIZE(table); i++) { \ |
1da177e4 LT |
77 | if (table[i].value == table_key) { \ |
78 | name = table[i].name; \ | |
79 | break; \ | |
80 | } \ | |
81 | } \ | |
82 | return name; \ | |
83 | } | |
84 | ||
85 | #define fc_enum_name_match(title, table_type, table) \ | |
86 | static int get_fc_##title##_match(const char *table_key, \ | |
87 | enum table_type *value) \ | |
88 | { \ | |
89 | int i; \ | |
90 | \ | |
6391a113 | 91 | for (i = 0; i < ARRAY_SIZE(table); i++) { \ |
1da177e4 LT |
92 | if (strncmp(table_key, table[i].name, \ |
93 | table[i].matchlen) == 0) { \ | |
94 | *value = table[i].value; \ | |
95 | return 0; /* success */ \ | |
96 | } \ | |
97 | } \ | |
98 | return 1; /* failure */ \ | |
99 | } | |
100 | ||
101 | ||
102 | /* Convert fc_port_type values to ascii string name */ | |
103 | static struct { | |
104 | enum fc_port_type value; | |
105 | char *name; | |
106 | } fc_port_type_names[] = { | |
107 | { FC_PORTTYPE_UNKNOWN, "Unknown" }, | |
108 | { FC_PORTTYPE_OTHER, "Other" }, | |
109 | { FC_PORTTYPE_NOTPRESENT, "Not Present" }, | |
110 | { FC_PORTTYPE_NPORT, "NPort (fabric via point-to-point)" }, | |
111 | { FC_PORTTYPE_NLPORT, "NLPort (fabric via loop)" }, | |
112 | { FC_PORTTYPE_LPORT, "LPort (private loop)" }, | |
951948a3 | 113 | { FC_PORTTYPE_PTP, "Point-To-Point (direct nport connection)" }, |
a53eb5e0 | 114 | { FC_PORTTYPE_NPIV, "NPIV VPORT" }, |
1da177e4 LT |
115 | }; |
116 | fc_enum_name_search(port_type, fc_port_type, fc_port_type_names) | |
117 | #define FC_PORTTYPE_MAX_NAMELEN 50 | |
118 | ||
a53eb5e0 JS |
119 | /* Reuse fc_port_type enum function for vport_type */ |
120 | #define get_fc_vport_type_name get_fc_port_type_name | |
121 | ||
1da177e4 | 122 | |
84314fd4 JS |
123 | /* Convert fc_host_event_code values to ascii string name */ |
124 | static const struct { | |
125 | enum fc_host_event_code value; | |
126 | char *name; | |
127 | } fc_host_event_code_names[] = { | |
128 | { FCH_EVT_LIP, "lip" }, | |
129 | { FCH_EVT_LINKUP, "link_up" }, | |
130 | { FCH_EVT_LINKDOWN, "link_down" }, | |
131 | { FCH_EVT_LIPRESET, "lip_reset" }, | |
132 | { FCH_EVT_RSCN, "rscn" }, | |
133 | { FCH_EVT_ADAPTER_CHANGE, "adapter_chg" }, | |
134 | { FCH_EVT_PORT_UNKNOWN, "port_unknown" }, | |
135 | { FCH_EVT_PORT_ONLINE, "port_online" }, | |
136 | { FCH_EVT_PORT_OFFLINE, "port_offline" }, | |
137 | { FCH_EVT_PORT_FABRIC, "port_fabric" }, | |
138 | { FCH_EVT_LINK_UNKNOWN, "link_unknown" }, | |
c39e0af6 | 139 | { FCH_EVT_LINK_FPIN, "link_FPIN" }, |
84314fd4 JS |
140 | { FCH_EVT_VENDOR_UNIQUE, "vendor_unique" }, |
141 | }; | |
142 | fc_enum_name_search(host_event_code, fc_host_event_code, | |
143 | fc_host_event_code_names) | |
144 | #define FC_HOST_EVENT_CODE_MAX_NAMELEN 30 | |
145 | ||
146 | ||
1da177e4 LT |
147 | /* Convert fc_port_state values to ascii string name */ |
148 | static struct { | |
149 | enum fc_port_state value; | |
150 | char *name; | |
151 | } fc_port_state_names[] = { | |
152 | { FC_PORTSTATE_UNKNOWN, "Unknown" }, | |
153 | { FC_PORTSTATE_NOTPRESENT, "Not Present" }, | |
154 | { FC_PORTSTATE_ONLINE, "Online" }, | |
155 | { FC_PORTSTATE_OFFLINE, "Offline" }, | |
156 | { FC_PORTSTATE_BLOCKED, "Blocked" }, | |
157 | { FC_PORTSTATE_BYPASSED, "Bypassed" }, | |
158 | { FC_PORTSTATE_DIAGNOSTICS, "Diagnostics" }, | |
159 | { FC_PORTSTATE_LINKDOWN, "Linkdown" }, | |
160 | { FC_PORTSTATE_ERROR, "Error" }, | |
161 | { FC_PORTSTATE_LOOPBACK, "Loopback" }, | |
42e33148 | 162 | { FC_PORTSTATE_DELETED, "Deleted" }, |
1da177e4 LT |
163 | }; |
164 | fc_enum_name_search(port_state, fc_port_state, fc_port_state_names) | |
165 | #define FC_PORTSTATE_MAX_NAMELEN 20 | |
166 | ||
167 | ||
a53eb5e0 JS |
168 | /* Convert fc_vport_state values to ascii string name */ |
169 | static struct { | |
170 | enum fc_vport_state value; | |
171 | char *name; | |
172 | } fc_vport_state_names[] = { | |
173 | { FC_VPORT_UNKNOWN, "Unknown" }, | |
174 | { FC_VPORT_ACTIVE, "Active" }, | |
175 | { FC_VPORT_DISABLED, "Disabled" }, | |
176 | { FC_VPORT_LINKDOWN, "Linkdown" }, | |
177 | { FC_VPORT_INITIALIZING, "Initializing" }, | |
178 | { FC_VPORT_NO_FABRIC_SUPP, "No Fabric Support" }, | |
179 | { FC_VPORT_NO_FABRIC_RSCS, "No Fabric Resources" }, | |
180 | { FC_VPORT_FABRIC_LOGOUT, "Fabric Logout" }, | |
181 | { FC_VPORT_FABRIC_REJ_WWN, "Fabric Rejected WWN" }, | |
182 | { FC_VPORT_FAILED, "VPort Failed" }, | |
183 | }; | |
184 | fc_enum_name_search(vport_state, fc_vport_state, fc_vport_state_names) | |
185 | #define FC_VPORTSTATE_MAX_NAMELEN 24 | |
186 | ||
187 | /* Reuse fc_vport_state enum function for vport_last_state */ | |
188 | #define get_fc_vport_last_state_name get_fc_vport_state_name | |
189 | ||
190 | ||
1da177e4 | 191 | /* Convert fc_tgtid_binding_type values to ascii string name */ |
0ad78200 | 192 | static const struct { |
1da177e4 LT |
193 | enum fc_tgtid_binding_type value; |
194 | char *name; | |
195 | int matchlen; | |
196 | } fc_tgtid_binding_type_names[] = { | |
197 | { FC_TGTID_BIND_NONE, "none", 4 }, | |
198 | { FC_TGTID_BIND_BY_WWPN, "wwpn (World Wide Port Name)", 4 }, | |
199 | { FC_TGTID_BIND_BY_WWNN, "wwnn (World Wide Node Name)", 4 }, | |
200 | { FC_TGTID_BIND_BY_ID, "port_id (FC Address)", 7 }, | |
201 | }; | |
202 | fc_enum_name_search(tgtid_bind_type, fc_tgtid_binding_type, | |
203 | fc_tgtid_binding_type_names) | |
204 | fc_enum_name_match(tgtid_bind_type, fc_tgtid_binding_type, | |
205 | fc_tgtid_binding_type_names) | |
206 | #define FC_BINDTYPE_MAX_NAMELEN 30 | |
207 | ||
208 | ||
209 | #define fc_bitfield_name_search(title, table) \ | |
210 | static ssize_t \ | |
211 | get_fc_##title##_names(u32 table_key, char *buf) \ | |
212 | { \ | |
213 | char *prefix = ""; \ | |
214 | ssize_t len = 0; \ | |
215 | int i; \ | |
216 | \ | |
6391a113 | 217 | for (i = 0; i < ARRAY_SIZE(table); i++) { \ |
1da177e4 LT |
218 | if (table[i].value & table_key) { \ |
219 | len += sprintf(buf + len, "%s%s", \ | |
220 | prefix, table[i].name); \ | |
221 | prefix = ", "; \ | |
222 | } \ | |
223 | } \ | |
224 | len += sprintf(buf + len, "\n"); \ | |
225 | return len; \ | |
226 | } | |
227 | ||
228 | ||
229 | /* Convert FC_COS bit values to ascii string name */ | |
0ad78200 | 230 | static const struct { |
1da177e4 LT |
231 | u32 value; |
232 | char *name; | |
233 | } fc_cos_names[] = { | |
234 | { FC_COS_CLASS1, "Class 1" }, | |
235 | { FC_COS_CLASS2, "Class 2" }, | |
236 | { FC_COS_CLASS3, "Class 3" }, | |
237 | { FC_COS_CLASS4, "Class 4" }, | |
238 | { FC_COS_CLASS6, "Class 6" }, | |
239 | }; | |
240 | fc_bitfield_name_search(cos, fc_cos_names) | |
241 | ||
242 | ||
243 | /* Convert FC_PORTSPEED bit values to ascii string name */ | |
0ad78200 | 244 | static const struct { |
1da177e4 LT |
245 | u32 value; |
246 | char *name; | |
247 | } fc_port_speed_names[] = { | |
248 | { FC_PORTSPEED_1GBIT, "1 Gbit" }, | |
249 | { FC_PORTSPEED_2GBIT, "2 Gbit" }, | |
250 | { FC_PORTSPEED_4GBIT, "4 Gbit" }, | |
251 | { FC_PORTSPEED_10GBIT, "10 Gbit" }, | |
c3d2350a JS |
252 | { FC_PORTSPEED_8GBIT, "8 Gbit" }, |
253 | { FC_PORTSPEED_16GBIT, "16 Gbit" }, | |
624f28be | 254 | { FC_PORTSPEED_32GBIT, "32 Gbit" }, |
c21a2c1a DK |
255 | { FC_PORTSPEED_20GBIT, "20 Gbit" }, |
256 | { FC_PORTSPEED_40GBIT, "40 Gbit" }, | |
257 | { FC_PORTSPEED_50GBIT, "50 Gbit" }, | |
258 | { FC_PORTSPEED_100GBIT, "100 Gbit" }, | |
c749e6bc | 259 | { FC_PORTSPEED_25GBIT, "25 Gbit" }, |
cc019a5a JS |
260 | { FC_PORTSPEED_64GBIT, "64 Gbit" }, |
261 | { FC_PORTSPEED_128GBIT, "128 Gbit" }, | |
2a5c98d2 | 262 | { FC_PORTSPEED_256GBIT, "256 Gbit" }, |
1da177e4 LT |
263 | { FC_PORTSPEED_NOT_NEGOTIATED, "Not Negotiated" }, |
264 | }; | |
265 | fc_bitfield_name_search(port_speed, fc_port_speed_names) | |
266 | ||
267 | ||
268 | static int | |
269 | show_fc_fc4s (char *buf, u8 *fc4_list) | |
270 | { | |
271 | int i, len=0; | |
272 | ||
273 | for (i = 0; i < FC_FC4_LIST_SIZE; i++, fc4_list++) | |
274 | len += sprintf(buf + len , "0x%02x ", *fc4_list); | |
275 | len += sprintf(buf + len, "\n"); | |
276 | return len; | |
277 | } | |
278 | ||
279 | ||
a53eb5e0 | 280 | /* Convert FC_PORT_ROLE bit values to ascii string name */ |
0ad78200 | 281 | static const struct { |
1da177e4 LT |
282 | u32 value; |
283 | char *name; | |
a53eb5e0 | 284 | } fc_port_role_names[] = { |
0c3ae266 CA |
285 | { FC_PORT_ROLE_FCP_TARGET, "FCP Target" }, |
286 | { FC_PORT_ROLE_FCP_INITIATOR, "FCP Initiator" }, | |
287 | { FC_PORT_ROLE_IP_PORT, "IP Port" }, | |
288 | { FC_PORT_ROLE_FCP_DUMMY_INITIATOR, "FCP Dummy Initiator" }, | |
a6a6d058 HR |
289 | { FC_PORT_ROLE_NVME_INITIATOR, "NVMe Initiator" }, |
290 | { FC_PORT_ROLE_NVME_TARGET, "NVMe Target" }, | |
291 | { FC_PORT_ROLE_NVME_DISCOVERY, "NVMe Discovery" }, | |
1da177e4 | 292 | }; |
a53eb5e0 | 293 | fc_bitfield_name_search(port_roles, fc_port_role_names) |
1da177e4 LT |
294 | |
295 | /* | |
296 | * Define roles that are specific to port_id. Values are relative to ROLE_MASK. | |
297 | */ | |
298 | #define FC_WELLKNOWN_PORTID_MASK 0xfffff0 | |
299 | #define FC_WELLKNOWN_ROLE_MASK 0x00000f | |
300 | #define FC_FPORT_PORTID 0x00000e | |
301 | #define FC_FABCTLR_PORTID 0x00000d | |
302 | #define FC_DIRSRVR_PORTID 0x00000c | |
303 | #define FC_TIMESRVR_PORTID 0x00000b | |
304 | #define FC_MGMTSRVR_PORTID 0x00000a | |
305 | ||
306 | ||
c4028958 DH |
307 | static void fc_timeout_deleted_rport(struct work_struct *work); |
308 | static void fc_timeout_fail_rport_io(struct work_struct *work); | |
309 | static void fc_scsi_scan_rport(struct work_struct *work); | |
1da177e4 LT |
310 | |
311 | /* | |
312 | * Attribute counts pre object type... | |
313 | * Increase these values if you add attributes | |
314 | */ | |
315 | #define FC_STARGET_NUM_ATTRS 3 | |
0f29b966 | 316 | #define FC_RPORT_NUM_ATTRS 10 |
a53eb5e0 | 317 | #define FC_VPORT_NUM_ATTRS 9 |
bb8ef587 | 318 | #define FC_HOST_NUM_ATTRS 29 |
1da177e4 LT |
319 | |
320 | struct fc_internal { | |
321 | struct scsi_transport_template t; | |
322 | struct fc_function_template *f; | |
323 | ||
324 | /* | |
325 | * For attributes : each object has : | |
326 | * An array of the actual attributes structures | |
327 | * An array of null-terminated pointers to the attribute | |
328 | * structures - used for mid-layer interaction. | |
329 | * | |
330 | * The attribute containers for the starget and host are are | |
331 | * part of the midlayer. As the remote port is specific to the | |
332 | * fc transport, we must provide the attribute container. | |
333 | */ | |
ee959b00 | 334 | struct device_attribute private_starget_attrs[ |
1da177e4 | 335 | FC_STARGET_NUM_ATTRS]; |
ee959b00 | 336 | struct device_attribute *starget_attrs[FC_STARGET_NUM_ATTRS + 1]; |
1da177e4 | 337 | |
ee959b00 TJ |
338 | struct device_attribute private_host_attrs[FC_HOST_NUM_ATTRS]; |
339 | struct device_attribute *host_attrs[FC_HOST_NUM_ATTRS + 1]; | |
1da177e4 LT |
340 | |
341 | struct transport_container rport_attr_cont; | |
ee959b00 TJ |
342 | struct device_attribute private_rport_attrs[FC_RPORT_NUM_ATTRS]; |
343 | struct device_attribute *rport_attrs[FC_RPORT_NUM_ATTRS + 1]; | |
a53eb5e0 JS |
344 | |
345 | struct transport_container vport_attr_cont; | |
ee959b00 TJ |
346 | struct device_attribute private_vport_attrs[FC_VPORT_NUM_ATTRS]; |
347 | struct device_attribute *vport_attrs[FC_VPORT_NUM_ATTRS + 1]; | |
1da177e4 LT |
348 | }; |
349 | ||
350 | #define to_fc_internal(tmpl) container_of(tmpl, struct fc_internal, t) | |
351 | ||
d0a7e574 | 352 | static int fc_target_setup(struct transport_container *tc, struct device *dev, |
ee959b00 | 353 | struct device *cdev) |
1da177e4 LT |
354 | { |
355 | struct scsi_target *starget = to_scsi_target(dev); | |
356 | struct fc_rport *rport = starget_to_rport(starget); | |
357 | ||
358 | /* | |
359 | * if parent is remote port, use values from remote port. | |
360 | * Otherwise, this host uses the fc_transport, but not the | |
361 | * remote port interface. As such, initialize to known non-values. | |
362 | */ | |
363 | if (rport) { | |
364 | fc_starget_node_name(starget) = rport->node_name; | |
365 | fc_starget_port_name(starget) = rport->port_name; | |
366 | fc_starget_port_id(starget) = rport->port_id; | |
367 | } else { | |
368 | fc_starget_node_name(starget) = -1; | |
369 | fc_starget_port_name(starget) = -1; | |
370 | fc_starget_port_id(starget) = -1; | |
371 | } | |
372 | ||
373 | return 0; | |
374 | } | |
375 | ||
376 | static DECLARE_TRANSPORT_CLASS(fc_transport_class, | |
377 | "fc_transport", | |
378 | fc_target_setup, | |
379 | NULL, | |
380 | NULL); | |
381 | ||
d0a7e574 | 382 | static int fc_host_setup(struct transport_container *tc, struct device *dev, |
ee959b00 | 383 | struct device *cdev) |
1da177e4 LT |
384 | { |
385 | struct Scsi_Host *shost = dev_to_shost(dev); | |
aedf3497 | 386 | struct fc_host_attrs *fc_host = shost_to_fc_host(shost); |
1da177e4 | 387 | |
9ef3e4a4 | 388 | /* |
1da177e4 LT |
389 | * Set default values easily detected by the midlayer as |
390 | * failure cases. The scsi lldd is responsible for initializing | |
391 | * all transport attributes to valid values per host. | |
392 | */ | |
aedf3497 JS |
393 | fc_host->node_name = -1; |
394 | fc_host->port_name = -1; | |
395 | fc_host->permanent_port_name = -1; | |
396 | fc_host->supported_classes = FC_COS_UNSPECIFIED; | |
397 | memset(fc_host->supported_fc4s, 0, | |
398 | sizeof(fc_host->supported_fc4s)); | |
aedf3497 JS |
399 | fc_host->supported_speeds = FC_PORTSPEED_UNKNOWN; |
400 | fc_host->maxframe_size = -1; | |
a53eb5e0 | 401 | fc_host->max_npiv_vports = 0; |
aedf3497 JS |
402 | memset(fc_host->serial_number, 0, |
403 | sizeof(fc_host->serial_number)); | |
bb8ef587 NP |
404 | memset(fc_host->manufacturer, 0, |
405 | sizeof(fc_host->manufacturer)); | |
406 | memset(fc_host->model, 0, | |
407 | sizeof(fc_host->model)); | |
408 | memset(fc_host->model_description, 0, | |
409 | sizeof(fc_host->model_description)); | |
410 | memset(fc_host->hardware_version, 0, | |
411 | sizeof(fc_host->hardware_version)); | |
412 | memset(fc_host->driver_version, 0, | |
413 | sizeof(fc_host->driver_version)); | |
414 | memset(fc_host->firmware_version, 0, | |
415 | sizeof(fc_host->firmware_version)); | |
416 | memset(fc_host->optionrom_version, 0, | |
417 | sizeof(fc_host->optionrom_version)); | |
aedf3497 JS |
418 | |
419 | fc_host->port_id = -1; | |
420 | fc_host->port_type = FC_PORTTYPE_UNKNOWN; | |
421 | fc_host->port_state = FC_PORTSTATE_UNKNOWN; | |
422 | memset(fc_host->active_fc4s, 0, | |
423 | sizeof(fc_host->active_fc4s)); | |
424 | fc_host->speed = FC_PORTSPEED_UNKNOWN; | |
425 | fc_host->fabric_name = -1; | |
b8d08210 JS |
426 | memset(fc_host->symbolic_name, 0, sizeof(fc_host->symbolic_name)); |
427 | memset(fc_host->system_hostname, 0, sizeof(fc_host->system_hostname)); | |
547aab51 | 428 | memset(&fc_host->fpin_stats, 0, sizeof(fc_host->fpin_stats)); |
aedf3497 JS |
429 | |
430 | fc_host->tgtid_bind_type = FC_TGTID_BIND_BY_WWPN; | |
431 | ||
432 | INIT_LIST_HEAD(&fc_host->rports); | |
433 | INIT_LIST_HEAD(&fc_host->rport_bindings); | |
a53eb5e0 | 434 | INIT_LIST_HEAD(&fc_host->vports); |
aedf3497 JS |
435 | fc_host->next_rport_number = 0; |
436 | fc_host->next_target_id = 0; | |
a53eb5e0 JS |
437 | fc_host->next_vport_number = 0; |
438 | fc_host->npiv_vports_inuse = 0; | |
aedf3497 | 439 | |
aab0de24 KS |
440 | snprintf(fc_host->work_q_name, sizeof(fc_host->work_q_name), |
441 | "fc_wq_%d", shost->host_no); | |
d8537548 | 442 | fc_host->work_q = alloc_workqueue("%s", 0, 0, fc_host->work_q_name); |
aedf3497 JS |
443 | if (!fc_host->work_q) |
444 | return -ENOMEM; | |
445 | ||
43ca910a | 446 | fc_host->dev_loss_tmo = fc_dev_loss_tmo; |
aab0de24 KS |
447 | snprintf(fc_host->devloss_work_q_name, |
448 | sizeof(fc_host->devloss_work_q_name), | |
449 | "fc_dl_%d", shost->host_no); | |
d8537548 KC |
450 | fc_host->devloss_work_q = alloc_workqueue("%s", 0, 0, |
451 | fc_host->devloss_work_q_name); | |
aedf3497 JS |
452 | if (!fc_host->devloss_work_q) { |
453 | destroy_workqueue(fc_host->work_q); | |
454 | fc_host->work_q = NULL; | |
455 | return -ENOMEM; | |
456 | } | |
457 | ||
9e4f5e29 JS |
458 | fc_bsg_hostadd(shost, fc_host); |
459 | /* ignore any bsg add error - we just can't do sgio */ | |
460 | ||
461 | return 0; | |
462 | } | |
463 | ||
464 | static int fc_host_remove(struct transport_container *tc, struct device *dev, | |
465 | struct device *cdev) | |
466 | { | |
467 | struct Scsi_Host *shost = dev_to_shost(dev); | |
468 | struct fc_host_attrs *fc_host = shost_to_fc_host(shost); | |
469 | ||
470 | fc_bsg_remove(fc_host->rqst_q); | |
1da177e4 LT |
471 | return 0; |
472 | } | |
473 | ||
474 | static DECLARE_TRANSPORT_CLASS(fc_host_class, | |
475 | "fc_host", | |
476 | fc_host_setup, | |
9e4f5e29 | 477 | fc_host_remove, |
1da177e4 LT |
478 | NULL); |
479 | ||
480 | /* | |
481 | * Setup and Remove actions for remote ports are handled | |
482 | * in the service functions below. | |
483 | */ | |
484 | static DECLARE_TRANSPORT_CLASS(fc_rport_class, | |
485 | "fc_remote_ports", | |
486 | NULL, | |
487 | NULL, | |
488 | NULL); | |
489 | ||
a53eb5e0 JS |
490 | /* |
491 | * Setup and Remove actions for virtual ports are handled | |
492 | * in the service functions below. | |
493 | */ | |
494 | static DECLARE_TRANSPORT_CLASS(fc_vport_class, | |
495 | "fc_vports", | |
496 | NULL, | |
497 | NULL, | |
498 | NULL); | |
499 | ||
eb44820c | 500 | /* |
84314fd4 | 501 | * Netlink Infrastructure |
eb44820c | 502 | */ |
84314fd4 JS |
503 | |
504 | static atomic_t fc_event_seq; | |
505 | ||
506 | /** | |
507 | * fc_get_event_number - Obtain the next sequential FC event number | |
508 | * | |
509 | * Notes: | |
eb44820c | 510 | * We could have inlined this, but it would have required fc_event_seq to |
84314fd4 JS |
511 | * be exposed. For now, live with the subroutine call. |
512 | * Atomic used to avoid lock/unlock... | |
eb44820c | 513 | */ |
84314fd4 JS |
514 | u32 |
515 | fc_get_event_number(void) | |
516 | { | |
517 | return atomic_add_return(1, &fc_event_seq); | |
518 | } | |
519 | EXPORT_SYMBOL(fc_get_event_number); | |
520 | ||
84314fd4 | 521 | /** |
2b1be558 JS |
522 | * fc_host_post_fc_event - routine to do the work of posting an event |
523 | * on an fc_host. | |
84314fd4 JS |
524 | * @shost: host the event occurred on |
525 | * @event_number: fc event number obtained from get_fc_event_number() | |
526 | * @event_code: fc_host event being posted | |
2b1be558 JS |
527 | * @data_len: amount, in bytes, of event data |
528 | * @data_buf: pointer to event data | |
529 | * @vendor_id: value for Vendor id | |
84314fd4 JS |
530 | * |
531 | * Notes: | |
532 | * This routine assumes no locks are held on entry. | |
eb44820c | 533 | */ |
84314fd4 | 534 | void |
2b1be558 JS |
535 | fc_host_post_fc_event(struct Scsi_Host *shost, u32 event_number, |
536 | enum fc_host_event_code event_code, | |
537 | u32 data_len, char *data_buf, u64 vendor_id) | |
84314fd4 JS |
538 | { |
539 | struct sk_buff *skb; | |
540 | struct nlmsghdr *nlh; | |
541 | struct fc_nl_event *event; | |
542 | const char *name; | |
e07ebea0 | 543 | u32 len; |
84314fd4 JS |
544 | int err; |
545 | ||
2b1be558 JS |
546 | if (!data_buf || data_len < 4) |
547 | data_len = 0; | |
548 | ||
84314fd4 JS |
549 | if (!scsi_nl_sock) { |
550 | err = -ENOENT; | |
551 | goto send_fail; | |
552 | } | |
553 | ||
2b1be558 | 554 | len = FC_NL_MSGALIGN(sizeof(*event) + data_len); |
84314fd4 | 555 | |
e07ebea0 | 556 | skb = nlmsg_new(len, GFP_KERNEL); |
84314fd4 JS |
557 | if (!skb) { |
558 | err = -ENOBUFS; | |
559 | goto send_fail; | |
560 | } | |
561 | ||
e07ebea0 | 562 | nlh = nlmsg_put(skb, 0, 0, SCSI_TRANSPORT_MSG, len, 0); |
84314fd4 JS |
563 | if (!nlh) { |
564 | err = -ENOBUFS; | |
565 | goto send_fail_skb; | |
566 | } | |
e07ebea0 | 567 | event = nlmsg_data(nlh); |
84314fd4 JS |
568 | |
569 | INIT_SCSI_NL_HDR(&event->snlh, SCSI_NL_TRANSPORT_FC, | |
570 | FC_NL_ASYNC_EVENT, len); | |
fe7f4e5d | 571 | event->seconds = ktime_get_real_seconds(); |
2b1be558 | 572 | event->vendor_id = vendor_id; |
84314fd4 | 573 | event->host_no = shost->host_no; |
2b1be558 | 574 | event->event_datalen = data_len; /* bytes */ |
84314fd4 JS |
575 | event->event_num = event_number; |
576 | event->event_code = event_code; | |
2b1be558 JS |
577 | if (data_len) |
578 | memcpy(&event->event_data, data_buf, data_len); | |
84314fd4 | 579 | |
ff491a73 PNA |
580 | nlmsg_multicast(scsi_nl_sock, skb, 0, SCSI_NL_GRP_FC_EVENTS, |
581 | GFP_KERNEL); | |
84314fd4 JS |
582 | return; |
583 | ||
584 | send_fail_skb: | |
585 | kfree_skb(skb); | |
586 | send_fail: | |
587 | name = get_fc_host_event_code_name(event_code); | |
588 | printk(KERN_WARNING | |
589 | "%s: Dropped Event : host %d %s data 0x%08x - err %d\n", | |
cadbd4a5 | 590 | __func__, shost->host_no, |
2b1be558 JS |
591 | (name) ? name : "<unknown>", |
592 | (data_len) ? *((u32 *)data_buf) : 0xFFFFFFFF, err); | |
84314fd4 JS |
593 | return; |
594 | } | |
2b1be558 JS |
595 | EXPORT_SYMBOL(fc_host_post_fc_event); |
596 | ||
597 | /** | |
598 | * fc_host_post_event - called to post an even on an fc_host. | |
599 | * @shost: host the event occurred on | |
600 | * @event_number: fc event number obtained from get_fc_event_number() | |
601 | * @event_code: fc_host event being posted | |
602 | * @event_data: 32bits of data for the event being posted | |
603 | * | |
604 | * Notes: | |
605 | * This routine assumes no locks are held on entry. | |
606 | */ | |
607 | void | |
608 | fc_host_post_event(struct Scsi_Host *shost, u32 event_number, | |
609 | enum fc_host_event_code event_code, u32 event_data) | |
610 | { | |
611 | fc_host_post_fc_event(shost, event_number, event_code, | |
612 | (u32)sizeof(u32), (char *)&event_data, 0); | |
613 | } | |
84314fd4 JS |
614 | EXPORT_SYMBOL(fc_host_post_event); |
615 | ||
616 | ||
617 | /** | |
2b1be558 JS |
618 | * fc_host_post_vendor_event - called to post a vendor unique event |
619 | * on an fc_host | |
84314fd4 JS |
620 | * @shost: host the event occurred on |
621 | * @event_number: fc event number obtained from get_fc_event_number() | |
622 | * @data_len: amount, in bytes, of vendor unique data | |
623 | * @data_buf: pointer to vendor unique data | |
eb44820c | 624 | * @vendor_id: Vendor id |
84314fd4 JS |
625 | * |
626 | * Notes: | |
627 | * This routine assumes no locks are held on entry. | |
eb44820c | 628 | */ |
84314fd4 JS |
629 | void |
630 | fc_host_post_vendor_event(struct Scsi_Host *shost, u32 event_number, | |
f14e2e29 | 631 | u32 data_len, char * data_buf, u64 vendor_id) |
84314fd4 | 632 | { |
2b1be558 JS |
633 | fc_host_post_fc_event(shost, event_number, FCH_EVT_VENDOR_UNIQUE, |
634 | data_len, data_buf, vendor_id); | |
84314fd4 JS |
635 | } |
636 | EXPORT_SYMBOL(fc_host_post_vendor_event); | |
637 | ||
3dcfe0de SS |
638 | /** |
639 | * fc_find_rport_by_wwpn - find the fc_rport pointer for a given wwpn | |
640 | * @shost: host the fc_rport is associated with | |
641 | * @wwpn: wwpn of the fc_rport device | |
642 | * | |
643 | * Notes: | |
644 | * This routine assumes no locks are held on entry. | |
645 | */ | |
646 | struct fc_rport * | |
647 | fc_find_rport_by_wwpn(struct Scsi_Host *shost, u64 wwpn) | |
648 | { | |
649 | struct fc_rport *rport; | |
650 | unsigned long flags; | |
651 | ||
652 | spin_lock_irqsave(shost->host_lock, flags); | |
653 | ||
654 | list_for_each_entry(rport, &fc_host_rports(shost), peers) { | |
655 | if (rport->port_state != FC_PORTSTATE_ONLINE) | |
656 | continue; | |
657 | ||
658 | if (rport->port_name == wwpn) { | |
659 | spin_unlock_irqrestore(shost->host_lock, flags); | |
660 | return rport; | |
661 | } | |
662 | } | |
663 | ||
664 | spin_unlock_irqrestore(shost->host_lock, flags); | |
665 | return NULL; | |
666 | } | |
667 | EXPORT_SYMBOL(fc_find_rport_by_wwpn); | |
668 | ||
669 | static void | |
670 | fc_li_stats_update(struct fc_fn_li_desc *li_desc, | |
671 | struct fc_fpin_stats *stats) | |
672 | { | |
673 | stats->li += be32_to_cpu(li_desc->event_count); | |
674 | switch (be16_to_cpu(li_desc->event_type)) { | |
675 | case FPIN_LI_UNKNOWN: | |
676 | stats->li_failure_unknown += | |
677 | be32_to_cpu(li_desc->event_count); | |
678 | break; | |
679 | case FPIN_LI_LINK_FAILURE: | |
680 | stats->li_link_failure_count += | |
681 | be32_to_cpu(li_desc->event_count); | |
682 | break; | |
683 | case FPIN_LI_LOSS_OF_SYNC: | |
684 | stats->li_loss_of_sync_count += | |
685 | be32_to_cpu(li_desc->event_count); | |
686 | break; | |
687 | case FPIN_LI_LOSS_OF_SIG: | |
688 | stats->li_loss_of_signals_count += | |
689 | be32_to_cpu(li_desc->event_count); | |
690 | break; | |
691 | case FPIN_LI_PRIM_SEQ_ERR: | |
692 | stats->li_prim_seq_err_count += | |
693 | be32_to_cpu(li_desc->event_count); | |
694 | break; | |
695 | case FPIN_LI_INVALID_TX_WD: | |
696 | stats->li_invalid_tx_word_count += | |
697 | be32_to_cpu(li_desc->event_count); | |
698 | break; | |
699 | case FPIN_LI_INVALID_CRC: | |
700 | stats->li_invalid_crc_count += | |
701 | be32_to_cpu(li_desc->event_count); | |
702 | break; | |
703 | case FPIN_LI_DEVICE_SPEC: | |
704 | stats->li_device_specific += | |
705 | be32_to_cpu(li_desc->event_count); | |
706 | break; | |
707 | } | |
708 | } | |
709 | ||
710 | static void | |
711 | fc_delivery_stats_update(u32 reason_code, struct fc_fpin_stats *stats) | |
712 | { | |
713 | stats->dn++; | |
714 | switch (reason_code) { | |
715 | case FPIN_DELI_UNKNOWN: | |
716 | stats->dn_unknown++; | |
717 | break; | |
718 | case FPIN_DELI_TIMEOUT: | |
719 | stats->dn_timeout++; | |
720 | break; | |
721 | case FPIN_DELI_UNABLE_TO_ROUTE: | |
722 | stats->dn_unable_to_route++; | |
723 | break; | |
724 | case FPIN_DELI_DEVICE_SPEC: | |
725 | stats->dn_device_specific++; | |
726 | break; | |
727 | } | |
728 | } | |
729 | ||
730 | static void | |
731 | fc_cn_stats_update(u16 event_type, struct fc_fpin_stats *stats) | |
732 | { | |
733 | stats->cn++; | |
734 | switch (event_type) { | |
735 | case FPIN_CONGN_CLEAR: | |
736 | stats->cn_clear++; | |
737 | break; | |
738 | case FPIN_CONGN_LOST_CREDIT: | |
739 | stats->cn_lost_credit++; | |
740 | break; | |
741 | case FPIN_CONGN_CREDIT_STALL: | |
742 | stats->cn_credit_stall++; | |
743 | break; | |
744 | case FPIN_CONGN_OVERSUBSCRIPTION: | |
745 | stats->cn_oversubscription++; | |
746 | break; | |
747 | case FPIN_CONGN_DEVICE_SPEC: | |
748 | stats->cn_device_specific++; | |
749 | } | |
750 | } | |
751 | ||
752 | /* | |
753 | * fc_fpin_li_stats_update - routine to update Link Integrity | |
754 | * event statistics. | |
755 | * @shost: host the FPIN was received on | |
756 | * @tlv: pointer to link integrity descriptor | |
757 | * | |
758 | */ | |
759 | static void | |
760 | fc_fpin_li_stats_update(struct Scsi_Host *shost, struct fc_tlv_desc *tlv) | |
761 | { | |
762 | u8 i; | |
763 | struct fc_rport *rport = NULL; | |
764 | struct fc_rport *attach_rport = NULL; | |
765 | struct fc_host_attrs *fc_host = shost_to_fc_host(shost); | |
766 | struct fc_fn_li_desc *li_desc = (struct fc_fn_li_desc *)tlv; | |
767 | u64 wwpn; | |
768 | ||
769 | rport = fc_find_rport_by_wwpn(shost, | |
770 | be64_to_cpu(li_desc->attached_wwpn)); | |
771 | if (rport && | |
772 | (rport->roles & FC_PORT_ROLE_FCP_TARGET || | |
773 | rport->roles & FC_PORT_ROLE_NVME_TARGET)) { | |
774 | attach_rport = rport; | |
775 | fc_li_stats_update(li_desc, &attach_rport->fpin_stats); | |
776 | } | |
777 | ||
778 | if (be32_to_cpu(li_desc->pname_count) > 0) { | |
779 | for (i = 0; | |
780 | i < be32_to_cpu(li_desc->pname_count); | |
781 | i++) { | |
782 | wwpn = be64_to_cpu(li_desc->pname_list[i]); | |
783 | rport = fc_find_rport_by_wwpn(shost, wwpn); | |
784 | if (rport && | |
785 | (rport->roles & FC_PORT_ROLE_FCP_TARGET || | |
786 | rport->roles & FC_PORT_ROLE_NVME_TARGET)) { | |
787 | if (rport == attach_rport) | |
788 | continue; | |
789 | fc_li_stats_update(li_desc, | |
790 | &rport->fpin_stats); | |
791 | } | |
792 | } | |
793 | } | |
794 | ||
795 | if (fc_host->port_name == be64_to_cpu(li_desc->attached_wwpn)) | |
796 | fc_li_stats_update(li_desc, &fc_host->fpin_stats); | |
797 | } | |
798 | ||
799 | /* | |
800 | * fc_fpin_delivery_stats_update - routine to update Delivery Notification | |
801 | * event statistics. | |
802 | * @shost: host the FPIN was received on | |
803 | * @tlv: pointer to delivery descriptor | |
804 | * | |
805 | */ | |
806 | static void | |
807 | fc_fpin_delivery_stats_update(struct Scsi_Host *shost, | |
808 | struct fc_tlv_desc *tlv) | |
809 | { | |
810 | struct fc_rport *rport = NULL; | |
811 | struct fc_rport *attach_rport = NULL; | |
812 | struct fc_host_attrs *fc_host = shost_to_fc_host(shost); | |
813 | struct fc_fn_deli_desc *dn_desc = (struct fc_fn_deli_desc *)tlv; | |
814 | u32 reason_code = be32_to_cpu(dn_desc->deli_reason_code); | |
815 | ||
816 | rport = fc_find_rport_by_wwpn(shost, | |
817 | be64_to_cpu(dn_desc->attached_wwpn)); | |
818 | if (rport && | |
819 | (rport->roles & FC_PORT_ROLE_FCP_TARGET || | |
820 | rport->roles & FC_PORT_ROLE_NVME_TARGET)) { | |
821 | attach_rport = rport; | |
822 | fc_delivery_stats_update(reason_code, | |
823 | &attach_rport->fpin_stats); | |
824 | } | |
825 | ||
826 | if (fc_host->port_name == be64_to_cpu(dn_desc->attached_wwpn)) | |
827 | fc_delivery_stats_update(reason_code, &fc_host->fpin_stats); | |
828 | } | |
829 | ||
830 | /* | |
831 | * fc_fpin_peer_congn_stats_update - routine to update Peer Congestion | |
832 | * event statistics. | |
833 | * @shost: host the FPIN was received on | |
834 | * @tlv: pointer to peer congestion descriptor | |
835 | * | |
836 | */ | |
837 | static void | |
838 | fc_fpin_peer_congn_stats_update(struct Scsi_Host *shost, | |
839 | struct fc_tlv_desc *tlv) | |
840 | { | |
841 | u8 i; | |
842 | struct fc_rport *rport = NULL; | |
843 | struct fc_rport *attach_rport = NULL; | |
844 | struct fc_fn_peer_congn_desc *pc_desc = | |
845 | (struct fc_fn_peer_congn_desc *)tlv; | |
846 | u16 event_type = be16_to_cpu(pc_desc->event_type); | |
847 | u64 wwpn; | |
848 | ||
849 | rport = fc_find_rport_by_wwpn(shost, | |
850 | be64_to_cpu(pc_desc->attached_wwpn)); | |
851 | if (rport && | |
852 | (rport->roles & FC_PORT_ROLE_FCP_TARGET || | |
853 | rport->roles & FC_PORT_ROLE_NVME_TARGET)) { | |
854 | attach_rport = rport; | |
855 | fc_cn_stats_update(event_type, &attach_rport->fpin_stats); | |
856 | } | |
857 | ||
858 | if (be32_to_cpu(pc_desc->pname_count) > 0) { | |
859 | for (i = 0; | |
860 | i < be32_to_cpu(pc_desc->pname_count); | |
861 | i++) { | |
862 | wwpn = be64_to_cpu(pc_desc->pname_list[i]); | |
863 | rport = fc_find_rport_by_wwpn(shost, wwpn); | |
864 | if (rport && | |
865 | (rport->roles & FC_PORT_ROLE_FCP_TARGET || | |
866 | rport->roles & FC_PORT_ROLE_NVME_TARGET)) { | |
867 | if (rport == attach_rport) | |
868 | continue; | |
869 | fc_cn_stats_update(event_type, | |
870 | &rport->fpin_stats); | |
871 | } | |
872 | } | |
873 | } | |
874 | } | |
875 | ||
876 | /* | |
877 | * fc_fpin_congn_stats_update - routine to update Congestion | |
878 | * event statistics. | |
879 | * @shost: host the FPIN was received on | |
880 | * @tlv: pointer to congestion descriptor | |
881 | * | |
882 | */ | |
883 | static void | |
884 | fc_fpin_congn_stats_update(struct Scsi_Host *shost, | |
885 | struct fc_tlv_desc *tlv) | |
886 | { | |
887 | struct fc_host_attrs *fc_host = shost_to_fc_host(shost); | |
888 | struct fc_fn_congn_desc *congn = (struct fc_fn_congn_desc *)tlv; | |
889 | ||
890 | fc_cn_stats_update(be16_to_cpu(congn->event_type), | |
891 | &fc_host->fpin_stats); | |
892 | } | |
893 | ||
c39e0af6 | 894 | /** |
ae6b4e69 | 895 | * fc_host_fpin_rcv - routine to process a received FPIN. |
c39e0af6 JS |
896 | * @shost: host the FPIN was received on |
897 | * @fpin_len: length of FPIN payload, in bytes | |
898 | * @fpin_buf: pointer to FPIN payload | |
899 | * | |
900 | * Notes: | |
901 | * This routine assumes no locks are held on entry. | |
902 | */ | |
903 | void | |
904 | fc_host_fpin_rcv(struct Scsi_Host *shost, u32 fpin_len, char *fpin_buf) | |
905 | { | |
3dcfe0de SS |
906 | struct fc_els_fpin *fpin = (struct fc_els_fpin *)fpin_buf; |
907 | struct fc_tlv_desc *tlv; | |
908 | u32 desc_cnt = 0, bytes_remain; | |
909 | u32 dtag; | |
910 | ||
911 | /* Update Statistics */ | |
912 | tlv = (struct fc_tlv_desc *)&fpin->fpin_desc[0]; | |
913 | bytes_remain = fpin_len - offsetof(struct fc_els_fpin, fpin_desc); | |
914 | bytes_remain = min_t(u32, bytes_remain, be32_to_cpu(fpin->desc_len)); | |
915 | ||
916 | while (bytes_remain >= FC_TLV_DESC_HDR_SZ && | |
917 | bytes_remain >= FC_TLV_DESC_SZ_FROM_LENGTH(tlv)) { | |
918 | dtag = be32_to_cpu(tlv->desc_tag); | |
919 | switch (dtag) { | |
920 | case ELS_DTAG_LNK_INTEGRITY: | |
921 | fc_fpin_li_stats_update(shost, tlv); | |
922 | break; | |
923 | case ELS_DTAG_DELIVERY: | |
924 | fc_fpin_delivery_stats_update(shost, tlv); | |
925 | break; | |
926 | case ELS_DTAG_PEER_CONGEST: | |
927 | fc_fpin_peer_congn_stats_update(shost, tlv); | |
928 | break; | |
929 | case ELS_DTAG_CONGESTION: | |
930 | fc_fpin_congn_stats_update(shost, tlv); | |
931 | } | |
932 | ||
933 | desc_cnt++; | |
934 | bytes_remain -= FC_TLV_DESC_SZ_FROM_LENGTH(tlv); | |
935 | tlv = fc_tlv_next_desc(tlv); | |
936 | } | |
937 | ||
c39e0af6 JS |
938 | fc_host_post_fc_event(shost, fc_get_event_number(), |
939 | FCH_EVT_LINK_FPIN, fpin_len, fpin_buf, 0); | |
940 | } | |
941 | EXPORT_SYMBOL(fc_host_fpin_rcv); | |
942 | ||
84314fd4 | 943 | |
1da177e4 LT |
944 | static __init int fc_transport_init(void) |
945 | { | |
84314fd4 JS |
946 | int error; |
947 | ||
948 | atomic_set(&fc_event_seq, 0); | |
949 | ||
950 | error = transport_class_register(&fc_host_class); | |
a53eb5e0 JS |
951 | if (error) |
952 | return error; | |
953 | error = transport_class_register(&fc_vport_class); | |
1da177e4 | 954 | if (error) |
48de68a4 | 955 | goto unreg_host_class; |
1da177e4 LT |
956 | error = transport_class_register(&fc_rport_class); |
957 | if (error) | |
48de68a4 MC |
958 | goto unreg_vport_class; |
959 | error = transport_class_register(&fc_transport_class); | |
960 | if (error) | |
961 | goto unreg_rport_class; | |
962 | return 0; | |
963 | ||
964 | unreg_rport_class: | |
965 | transport_class_unregister(&fc_rport_class); | |
966 | unreg_vport_class: | |
967 | transport_class_unregister(&fc_vport_class); | |
968 | unreg_host_class: | |
969 | transport_class_unregister(&fc_host_class); | |
970 | return error; | |
1da177e4 LT |
971 | } |
972 | ||
973 | static void __exit fc_transport_exit(void) | |
974 | { | |
975 | transport_class_unregister(&fc_transport_class); | |
976 | transport_class_unregister(&fc_rport_class); | |
977 | transport_class_unregister(&fc_host_class); | |
a53eb5e0 | 978 | transport_class_unregister(&fc_vport_class); |
1da177e4 LT |
979 | } |
980 | ||
981 | /* | |
982 | * FC Remote Port Attribute Management | |
983 | */ | |
984 | ||
985 | #define fc_rport_show_function(field, format_string, sz, cast) \ | |
986 | static ssize_t \ | |
ee959b00 TJ |
987 | show_fc_rport_##field (struct device *dev, \ |
988 | struct device_attribute *attr, char *buf) \ | |
1da177e4 | 989 | { \ |
ee959b00 | 990 | struct fc_rport *rport = transport_class_to_rport(dev); \ |
1da177e4 LT |
991 | struct Scsi_Host *shost = rport_to_shost(rport); \ |
992 | struct fc_internal *i = to_fc_internal(shost->transportt); \ | |
19a7b4ae JSEC |
993 | if ((i->f->get_rport_##field) && \ |
994 | !((rport->port_state == FC_PORTSTATE_BLOCKED) || \ | |
42e33148 | 995 | (rport->port_state == FC_PORTSTATE_DELETED) || \ |
19a7b4ae | 996 | (rport->port_state == FC_PORTSTATE_NOTPRESENT))) \ |
1da177e4 LT |
997 | i->f->get_rport_##field(rport); \ |
998 | return snprintf(buf, sz, format_string, cast rport->field); \ | |
999 | } | |
1000 | ||
1001 | #define fc_rport_store_function(field) \ | |
1002 | static ssize_t \ | |
ee959b00 TJ |
1003 | store_fc_rport_##field(struct device *dev, \ |
1004 | struct device_attribute *attr, \ | |
1005 | const char *buf, size_t count) \ | |
1da177e4 LT |
1006 | { \ |
1007 | int val; \ | |
ee959b00 | 1008 | struct fc_rport *rport = transport_class_to_rport(dev); \ |
1da177e4 LT |
1009 | struct Scsi_Host *shost = rport_to_shost(rport); \ |
1010 | struct fc_internal *i = to_fc_internal(shost->transportt); \ | |
0f29b966 | 1011 | char *cp; \ |
19a7b4ae | 1012 | if ((rport->port_state == FC_PORTSTATE_BLOCKED) || \ |
42e33148 | 1013 | (rport->port_state == FC_PORTSTATE_DELETED) || \ |
19a7b4ae JSEC |
1014 | (rport->port_state == FC_PORTSTATE_NOTPRESENT)) \ |
1015 | return -EBUSY; \ | |
0f29b966 JS |
1016 | val = simple_strtoul(buf, &cp, 0); \ |
1017 | if (*cp && (*cp != '\n')) \ | |
1018 | return -EINVAL; \ | |
1da177e4 LT |
1019 | i->f->set_rport_##field(rport, val); \ |
1020 | return count; \ | |
1021 | } | |
1022 | ||
1023 | #define fc_rport_rd_attr(field, format_string, sz) \ | |
1024 | fc_rport_show_function(field, format_string, sz, ) \ | |
ee959b00 | 1025 | static FC_DEVICE_ATTR(rport, field, S_IRUGO, \ |
1da177e4 LT |
1026 | show_fc_rport_##field, NULL) |
1027 | ||
1028 | #define fc_rport_rd_attr_cast(field, format_string, sz, cast) \ | |
1029 | fc_rport_show_function(field, format_string, sz, (cast)) \ | |
ee959b00 | 1030 | static FC_DEVICE_ATTR(rport, field, S_IRUGO, \ |
1da177e4 LT |
1031 | show_fc_rport_##field, NULL) |
1032 | ||
1033 | #define fc_rport_rw_attr(field, format_string, sz) \ | |
1034 | fc_rport_show_function(field, format_string, sz, ) \ | |
1035 | fc_rport_store_function(field) \ | |
ee959b00 | 1036 | static FC_DEVICE_ATTR(rport, field, S_IRUGO | S_IWUSR, \ |
1da177e4 LT |
1037 | show_fc_rport_##field, \ |
1038 | store_fc_rport_##field) | |
1039 | ||
1040 | ||
1041 | #define fc_private_rport_show_function(field, format_string, sz, cast) \ | |
1042 | static ssize_t \ | |
ee959b00 TJ |
1043 | show_fc_rport_##field (struct device *dev, \ |
1044 | struct device_attribute *attr, char *buf) \ | |
1da177e4 | 1045 | { \ |
ee959b00 | 1046 | struct fc_rport *rport = transport_class_to_rport(dev); \ |
1da177e4 LT |
1047 | return snprintf(buf, sz, format_string, cast rport->field); \ |
1048 | } | |
1049 | ||
1050 | #define fc_private_rport_rd_attr(field, format_string, sz) \ | |
1051 | fc_private_rport_show_function(field, format_string, sz, ) \ | |
ee959b00 | 1052 | static FC_DEVICE_ATTR(rport, field, S_IRUGO, \ |
1da177e4 LT |
1053 | show_fc_rport_##field, NULL) |
1054 | ||
1055 | #define fc_private_rport_rd_attr_cast(field, format_string, sz, cast) \ | |
1056 | fc_private_rport_show_function(field, format_string, sz, (cast)) \ | |
ee959b00 | 1057 | static FC_DEVICE_ATTR(rport, field, S_IRUGO, \ |
1da177e4 LT |
1058 | show_fc_rport_##field, NULL) |
1059 | ||
1060 | ||
1061 | #define fc_private_rport_rd_enum_attr(title, maxlen) \ | |
1062 | static ssize_t \ | |
ee959b00 TJ |
1063 | show_fc_rport_##title (struct device *dev, \ |
1064 | struct device_attribute *attr, char *buf) \ | |
1da177e4 | 1065 | { \ |
ee959b00 | 1066 | struct fc_rport *rport = transport_class_to_rport(dev); \ |
1da177e4 LT |
1067 | const char *name; \ |
1068 | name = get_fc_##title##_name(rport->title); \ | |
1069 | if (!name) \ | |
1070 | return -EINVAL; \ | |
1071 | return snprintf(buf, maxlen, "%s\n", name); \ | |
1072 | } \ | |
ee959b00 | 1073 | static FC_DEVICE_ATTR(rport, title, S_IRUGO, \ |
1da177e4 LT |
1074 | show_fc_rport_##title, NULL) |
1075 | ||
1076 | ||
1077 | #define SETUP_RPORT_ATTRIBUTE_RD(field) \ | |
ee959b00 | 1078 | i->private_rport_attrs[count] = device_attr_rport_##field; \ |
1da177e4 LT |
1079 | i->private_rport_attrs[count].attr.mode = S_IRUGO; \ |
1080 | i->private_rport_attrs[count].store = NULL; \ | |
1081 | i->rport_attrs[count] = &i->private_rport_attrs[count]; \ | |
1082 | if (i->f->show_rport_##field) \ | |
1083 | count++ | |
1084 | ||
1085 | #define SETUP_PRIVATE_RPORT_ATTRIBUTE_RD(field) \ | |
ee959b00 | 1086 | i->private_rport_attrs[count] = device_attr_rport_##field; \ |
1da177e4 LT |
1087 | i->private_rport_attrs[count].attr.mode = S_IRUGO; \ |
1088 | i->private_rport_attrs[count].store = NULL; \ | |
1089 | i->rport_attrs[count] = &i->private_rport_attrs[count]; \ | |
1090 | count++ | |
1091 | ||
1092 | #define SETUP_RPORT_ATTRIBUTE_RW(field) \ | |
ee959b00 | 1093 | i->private_rport_attrs[count] = device_attr_rport_##field; \ |
1da177e4 LT |
1094 | if (!i->f->set_rport_##field) { \ |
1095 | i->private_rport_attrs[count].attr.mode = S_IRUGO; \ | |
1096 | i->private_rport_attrs[count].store = NULL; \ | |
1097 | } \ | |
1098 | i->rport_attrs[count] = &i->private_rport_attrs[count]; \ | |
1099 | if (i->f->show_rport_##field) \ | |
1100 | count++ | |
1101 | ||
0f29b966 JS |
1102 | #define SETUP_PRIVATE_RPORT_ATTRIBUTE_RW(field) \ |
1103 | { \ | |
ee959b00 | 1104 | i->private_rport_attrs[count] = device_attr_rport_##field; \ |
0f29b966 JS |
1105 | i->rport_attrs[count] = &i->private_rport_attrs[count]; \ |
1106 | count++; \ | |
1107 | } | |
1108 | ||
1da177e4 LT |
1109 | |
1110 | /* The FC Transport Remote Port Attributes: */ | |
1111 | ||
1112 | /* Fixed Remote Port Attributes */ | |
1113 | ||
1114 | fc_private_rport_rd_attr(maxframe_size, "%u bytes\n", 20); | |
1115 | ||
1116 | static ssize_t | |
ee959b00 TJ |
1117 | show_fc_rport_supported_classes (struct device *dev, |
1118 | struct device_attribute *attr, char *buf) | |
1da177e4 | 1119 | { |
ee959b00 | 1120 | struct fc_rport *rport = transport_class_to_rport(dev); |
1da177e4 LT |
1121 | if (rport->supported_classes == FC_COS_UNSPECIFIED) |
1122 | return snprintf(buf, 20, "unspecified\n"); | |
1123 | return get_fc_cos_names(rport->supported_classes, buf); | |
1124 | } | |
ee959b00 | 1125 | static FC_DEVICE_ATTR(rport, supported_classes, S_IRUGO, |
1da177e4 LT |
1126 | show_fc_rport_supported_classes, NULL); |
1127 | ||
1128 | /* Dynamic Remote Port Attributes */ | |
1129 | ||
19a7b4ae JSEC |
1130 | /* |
1131 | * dev_loss_tmo attribute | |
1132 | */ | |
43ca910a MC |
1133 | static int fc_str_to_dev_loss(const char *buf, unsigned long *val) |
1134 | { | |
1135 | char *cp; | |
1136 | ||
1137 | *val = simple_strtoul(buf, &cp, 0); | |
eea42270 | 1138 | if (*cp && (*cp != '\n')) |
43ca910a MC |
1139 | return -EINVAL; |
1140 | /* | |
1141 | * Check for overflow; dev_loss_tmo is u32 | |
1142 | */ | |
1143 | if (*val > UINT_MAX) | |
1144 | return -EINVAL; | |
1145 | ||
1146 | return 0; | |
1147 | } | |
1148 | ||
1149 | static int fc_rport_set_dev_loss_tmo(struct fc_rport *rport, | |
1150 | unsigned long val) | |
19a7b4ae | 1151 | { |
19a7b4ae JSEC |
1152 | struct Scsi_Host *shost = rport_to_shost(rport); |
1153 | struct fc_internal *i = to_fc_internal(shost->transportt); | |
43ca910a | 1154 | |
19a7b4ae | 1155 | if ((rport->port_state == FC_PORTSTATE_BLOCKED) || |
42e33148 | 1156 | (rport->port_state == FC_PORTSTATE_DELETED) || |
19a7b4ae JSEC |
1157 | (rport->port_state == FC_PORTSTATE_NOTPRESENT)) |
1158 | return -EBUSY; | |
36dd288f HR |
1159 | /* |
1160 | * Check for overflow; dev_loss_tmo is u32 | |
1161 | */ | |
1162 | if (val > UINT_MAX) | |
1163 | return -EINVAL; | |
1164 | ||
f2818663 HR |
1165 | /* |
1166 | * If fast_io_fail is off we have to cap | |
1167 | * dev_loss_tmo at SCSI_DEVICE_BLOCK_MAX_TIMEOUT | |
1168 | */ | |
1169 | if (rport->fast_io_fail_tmo == -1 && | |
1170 | val > SCSI_DEVICE_BLOCK_MAX_TIMEOUT) | |
1171 | return -EINVAL; | |
1172 | ||
19a7b4ae | 1173 | i->f->set_rport_dev_loss_tmo(rport, val); |
43ca910a MC |
1174 | return 0; |
1175 | } | |
1176 | ||
1177 | fc_rport_show_function(dev_loss_tmo, "%d\n", 20, ) | |
1178 | static ssize_t | |
1179 | store_fc_rport_dev_loss_tmo(struct device *dev, struct device_attribute *attr, | |
1180 | const char *buf, size_t count) | |
1181 | { | |
1182 | struct fc_rport *rport = transport_class_to_rport(dev); | |
1183 | unsigned long val; | |
1184 | int rc; | |
1185 | ||
1186 | rc = fc_str_to_dev_loss(buf, &val); | |
1187 | if (rc) | |
1188 | return rc; | |
1189 | ||
1190 | rc = fc_rport_set_dev_loss_tmo(rport, val); | |
1191 | if (rc) | |
1192 | return rc; | |
19a7b4ae JSEC |
1193 | return count; |
1194 | } | |
ee959b00 | 1195 | static FC_DEVICE_ATTR(rport, dev_loss_tmo, S_IRUGO | S_IWUSR, |
19a7b4ae | 1196 | show_fc_rport_dev_loss_tmo, store_fc_rport_dev_loss_tmo); |
1da177e4 LT |
1197 | |
1198 | ||
1199 | /* Private Remote Port Attributes */ | |
1200 | ||
1201 | fc_private_rport_rd_attr_cast(node_name, "0x%llx\n", 20, unsigned long long); | |
1202 | fc_private_rport_rd_attr_cast(port_name, "0x%llx\n", 20, unsigned long long); | |
1203 | fc_private_rport_rd_attr(port_id, "0x%06x\n", 20); | |
1204 | ||
1205 | static ssize_t | |
ee959b00 TJ |
1206 | show_fc_rport_roles (struct device *dev, struct device_attribute *attr, |
1207 | char *buf) | |
1da177e4 | 1208 | { |
ee959b00 | 1209 | struct fc_rport *rport = transport_class_to_rport(dev); |
1da177e4 LT |
1210 | |
1211 | /* identify any roles that are port_id specific */ | |
1212 | if ((rport->port_id != -1) && | |
1213 | (rport->port_id & FC_WELLKNOWN_PORTID_MASK) == | |
1214 | FC_WELLKNOWN_PORTID_MASK) { | |
1215 | switch (rport->port_id & FC_WELLKNOWN_ROLE_MASK) { | |
1216 | case FC_FPORT_PORTID: | |
1217 | return snprintf(buf, 30, "Fabric Port\n"); | |
1218 | case FC_FABCTLR_PORTID: | |
1219 | return snprintf(buf, 30, "Fabric Controller\n"); | |
1220 | case FC_DIRSRVR_PORTID: | |
1221 | return snprintf(buf, 30, "Directory Server\n"); | |
1222 | case FC_TIMESRVR_PORTID: | |
1223 | return snprintf(buf, 30, "Time Server\n"); | |
1224 | case FC_MGMTSRVR_PORTID: | |
1225 | return snprintf(buf, 30, "Management Server\n"); | |
1226 | default: | |
1227 | return snprintf(buf, 30, "Unknown Fabric Entity\n"); | |
1228 | } | |
1229 | } else { | |
a53eb5e0 | 1230 | if (rport->roles == FC_PORT_ROLE_UNKNOWN) |
1da177e4 | 1231 | return snprintf(buf, 20, "unknown\n"); |
a53eb5e0 | 1232 | return get_fc_port_roles_names(rport->roles, buf); |
1da177e4 LT |
1233 | } |
1234 | } | |
ee959b00 | 1235 | static FC_DEVICE_ATTR(rport, roles, S_IRUGO, |
1da177e4 LT |
1236 | show_fc_rport_roles, NULL); |
1237 | ||
1238 | fc_private_rport_rd_enum_attr(port_state, FC_PORTSTATE_MAX_NAMELEN); | |
1239 | fc_private_rport_rd_attr(scsi_target_id, "%d\n", 20); | |
1240 | ||
0f29b966 JS |
1241 | /* |
1242 | * fast_io_fail_tmo attribute | |
1243 | */ | |
1244 | static ssize_t | |
ee959b00 TJ |
1245 | show_fc_rport_fast_io_fail_tmo (struct device *dev, |
1246 | struct device_attribute *attr, char *buf) | |
0f29b966 | 1247 | { |
ee959b00 | 1248 | struct fc_rport *rport = transport_class_to_rport(dev); |
0f29b966 JS |
1249 | |
1250 | if (rport->fast_io_fail_tmo == -1) | |
1251 | return snprintf(buf, 5, "off\n"); | |
1252 | return snprintf(buf, 20, "%d\n", rport->fast_io_fail_tmo); | |
1253 | } | |
1254 | ||
1255 | static ssize_t | |
ee959b00 TJ |
1256 | store_fc_rport_fast_io_fail_tmo(struct device *dev, |
1257 | struct device_attribute *attr, const char *buf, | |
1258 | size_t count) | |
0f29b966 JS |
1259 | { |
1260 | int val; | |
1261 | char *cp; | |
ee959b00 | 1262 | struct fc_rport *rport = transport_class_to_rport(dev); |
0f29b966 JS |
1263 | |
1264 | if ((rport->port_state == FC_PORTSTATE_BLOCKED) || | |
1265 | (rport->port_state == FC_PORTSTATE_DELETED) || | |
1266 | (rport->port_state == FC_PORTSTATE_NOTPRESENT)) | |
1267 | return -EBUSY; | |
1268 | if (strncmp(buf, "off", 3) == 0) | |
1269 | rport->fast_io_fail_tmo = -1; | |
1270 | else { | |
1271 | val = simple_strtoul(buf, &cp, 0); | |
f2818663 HR |
1272 | if ((*cp && (*cp != '\n')) || (val < 0)) |
1273 | return -EINVAL; | |
1274 | /* | |
1275 | * Cap fast_io_fail by dev_loss_tmo or | |
1276 | * SCSI_DEVICE_BLOCK_MAX_TIMEOUT. | |
1277 | */ | |
1278 | if ((val >= rport->dev_loss_tmo) || | |
1279 | (val > SCSI_DEVICE_BLOCK_MAX_TIMEOUT)) | |
0f29b966 | 1280 | return -EINVAL; |
f2818663 | 1281 | |
0f29b966 JS |
1282 | rport->fast_io_fail_tmo = val; |
1283 | } | |
1284 | return count; | |
1285 | } | |
ee959b00 | 1286 | static FC_DEVICE_ATTR(rport, fast_io_fail_tmo, S_IRUGO | S_IWUSR, |
0f29b966 | 1287 | show_fc_rport_fast_io_fail_tmo, store_fc_rport_fast_io_fail_tmo); |
1da177e4 | 1288 | |
547aab51 SS |
1289 | #define fc_rport_fpin_statistic(name) \ |
1290 | static ssize_t fc_rport_fpinstat_##name(struct device *cd, \ | |
1291 | struct device_attribute *attr, \ | |
1292 | char *buf) \ | |
1293 | { \ | |
1294 | struct fc_rport *rport = transport_class_to_rport(cd); \ | |
1295 | \ | |
1296 | return snprintf(buf, 20, "0x%llx\n", rport->fpin_stats.name); \ | |
1297 | } \ | |
1298 | static FC_DEVICE_ATTR(rport, fpin_##name, 0444, fc_rport_fpinstat_##name, NULL) | |
1299 | ||
1300 | fc_rport_fpin_statistic(dn); | |
1301 | fc_rport_fpin_statistic(dn_unknown); | |
1302 | fc_rport_fpin_statistic(dn_timeout); | |
1303 | fc_rport_fpin_statistic(dn_unable_to_route); | |
1304 | fc_rport_fpin_statistic(dn_device_specific); | |
1305 | fc_rport_fpin_statistic(cn); | |
1306 | fc_rport_fpin_statistic(cn_clear); | |
1307 | fc_rport_fpin_statistic(cn_lost_credit); | |
1308 | fc_rport_fpin_statistic(cn_credit_stall); | |
1309 | fc_rport_fpin_statistic(cn_oversubscription); | |
1310 | fc_rport_fpin_statistic(cn_device_specific); | |
1311 | fc_rport_fpin_statistic(li); | |
1312 | fc_rport_fpin_statistic(li_failure_unknown); | |
1313 | fc_rport_fpin_statistic(li_link_failure_count); | |
1314 | fc_rport_fpin_statistic(li_loss_of_sync_count); | |
1315 | fc_rport_fpin_statistic(li_loss_of_signals_count); | |
1316 | fc_rport_fpin_statistic(li_prim_seq_err_count); | |
1317 | fc_rport_fpin_statistic(li_invalid_tx_word_count); | |
1318 | fc_rport_fpin_statistic(li_invalid_crc_count); | |
1319 | fc_rport_fpin_statistic(li_device_specific); | |
1320 | ||
1321 | static struct attribute *fc_rport_statistics_attrs[] = { | |
1322 | &device_attr_rport_fpin_dn.attr, | |
1323 | &device_attr_rport_fpin_dn_unknown.attr, | |
1324 | &device_attr_rport_fpin_dn_timeout.attr, | |
1325 | &device_attr_rport_fpin_dn_unable_to_route.attr, | |
1326 | &device_attr_rport_fpin_dn_device_specific.attr, | |
1327 | &device_attr_rport_fpin_li.attr, | |
1328 | &device_attr_rport_fpin_li_failure_unknown.attr, | |
1329 | &device_attr_rport_fpin_li_link_failure_count.attr, | |
1330 | &device_attr_rport_fpin_li_loss_of_sync_count.attr, | |
1331 | &device_attr_rport_fpin_li_loss_of_signals_count.attr, | |
1332 | &device_attr_rport_fpin_li_prim_seq_err_count.attr, | |
1333 | &device_attr_rport_fpin_li_invalid_tx_word_count.attr, | |
1334 | &device_attr_rport_fpin_li_invalid_crc_count.attr, | |
1335 | &device_attr_rport_fpin_li_device_specific.attr, | |
1336 | &device_attr_rport_fpin_cn.attr, | |
1337 | &device_attr_rport_fpin_cn_clear.attr, | |
1338 | &device_attr_rport_fpin_cn_lost_credit.attr, | |
1339 | &device_attr_rport_fpin_cn_credit_stall.attr, | |
1340 | &device_attr_rport_fpin_cn_oversubscription.attr, | |
1341 | &device_attr_rport_fpin_cn_device_specific.attr, | |
1342 | NULL | |
1343 | }; | |
1344 | ||
1345 | static struct attribute_group fc_rport_statistics_group = { | |
1346 | .name = "statistics", | |
1347 | .attrs = fc_rport_statistics_attrs, | |
1348 | }; | |
1349 | ||
1da177e4 LT |
1350 | |
1351 | /* | |
1352 | * FC SCSI Target Attribute Management | |
1353 | */ | |
1354 | ||
1355 | /* | |
1356 | * Note: in the target show function we recognize when the remote | |
732bee7a | 1357 | * port is in the hierarchy and do not allow the driver to get |
1da177e4 LT |
1358 | * involved in sysfs functions. The driver only gets involved if |
1359 | * it's the "old" style that doesn't use rports. | |
1360 | */ | |
1361 | #define fc_starget_show_function(field, format_string, sz, cast) \ | |
1362 | static ssize_t \ | |
ee959b00 TJ |
1363 | show_fc_starget_##field (struct device *dev, \ |
1364 | struct device_attribute *attr, char *buf) \ | |
1da177e4 | 1365 | { \ |
ee959b00 | 1366 | struct scsi_target *starget = transport_class_to_starget(dev); \ |
1da177e4 LT |
1367 | struct Scsi_Host *shost = dev_to_shost(starget->dev.parent); \ |
1368 | struct fc_internal *i = to_fc_internal(shost->transportt); \ | |
1369 | struct fc_rport *rport = starget_to_rport(starget); \ | |
1370 | if (rport) \ | |
1371 | fc_starget_##field(starget) = rport->field; \ | |
1372 | else if (i->f->get_starget_##field) \ | |
1373 | i->f->get_starget_##field(starget); \ | |
1374 | return snprintf(buf, sz, format_string, \ | |
1375 | cast fc_starget_##field(starget)); \ | |
1376 | } | |
1377 | ||
1378 | #define fc_starget_rd_attr(field, format_string, sz) \ | |
1379 | fc_starget_show_function(field, format_string, sz, ) \ | |
ee959b00 | 1380 | static FC_DEVICE_ATTR(starget, field, S_IRUGO, \ |
1da177e4 LT |
1381 | show_fc_starget_##field, NULL) |
1382 | ||
1383 | #define fc_starget_rd_attr_cast(field, format_string, sz, cast) \ | |
1384 | fc_starget_show_function(field, format_string, sz, (cast)) \ | |
ee959b00 | 1385 | static FC_DEVICE_ATTR(starget, field, S_IRUGO, \ |
1da177e4 LT |
1386 | show_fc_starget_##field, NULL) |
1387 | ||
1388 | #define SETUP_STARGET_ATTRIBUTE_RD(field) \ | |
ee959b00 | 1389 | i->private_starget_attrs[count] = device_attr_starget_##field; \ |
1da177e4 LT |
1390 | i->private_starget_attrs[count].attr.mode = S_IRUGO; \ |
1391 | i->private_starget_attrs[count].store = NULL; \ | |
1392 | i->starget_attrs[count] = &i->private_starget_attrs[count]; \ | |
1393 | if (i->f->show_starget_##field) \ | |
1394 | count++ | |
1395 | ||
1396 | #define SETUP_STARGET_ATTRIBUTE_RW(field) \ | |
ee959b00 | 1397 | i->private_starget_attrs[count] = device_attr_starget_##field; \ |
1da177e4 LT |
1398 | if (!i->f->set_starget_##field) { \ |
1399 | i->private_starget_attrs[count].attr.mode = S_IRUGO; \ | |
1400 | i->private_starget_attrs[count].store = NULL; \ | |
1401 | } \ | |
1402 | i->starget_attrs[count] = &i->private_starget_attrs[count]; \ | |
1403 | if (i->f->show_starget_##field) \ | |
1404 | count++ | |
1405 | ||
1406 | /* The FC Transport SCSI Target Attributes: */ | |
1407 | fc_starget_rd_attr_cast(node_name, "0x%llx\n", 20, unsigned long long); | |
1408 | fc_starget_rd_attr_cast(port_name, "0x%llx\n", 20, unsigned long long); | |
1409 | fc_starget_rd_attr(port_id, "0x%06x\n", 20); | |
1410 | ||
1411 | ||
a53eb5e0 JS |
1412 | /* |
1413 | * FC Virtual Port Attribute Management | |
1414 | */ | |
1415 | ||
1416 | #define fc_vport_show_function(field, format_string, sz, cast) \ | |
1417 | static ssize_t \ | |
ee959b00 TJ |
1418 | show_fc_vport_##field (struct device *dev, \ |
1419 | struct device_attribute *attr, char *buf) \ | |
a53eb5e0 | 1420 | { \ |
ee959b00 | 1421 | struct fc_vport *vport = transport_class_to_vport(dev); \ |
a53eb5e0 JS |
1422 | struct Scsi_Host *shost = vport_to_shost(vport); \ |
1423 | struct fc_internal *i = to_fc_internal(shost->transportt); \ | |
1424 | if ((i->f->get_vport_##field) && \ | |
1425 | !(vport->flags & (FC_VPORT_DEL | FC_VPORT_CREATING))) \ | |
1426 | i->f->get_vport_##field(vport); \ | |
1427 | return snprintf(buf, sz, format_string, cast vport->field); \ | |
1428 | } | |
1429 | ||
1430 | #define fc_vport_store_function(field) \ | |
1431 | static ssize_t \ | |
ee959b00 TJ |
1432 | store_fc_vport_##field(struct device *dev, \ |
1433 | struct device_attribute *attr, \ | |
1434 | const char *buf, size_t count) \ | |
a53eb5e0 JS |
1435 | { \ |
1436 | int val; \ | |
ee959b00 | 1437 | struct fc_vport *vport = transport_class_to_vport(dev); \ |
a53eb5e0 JS |
1438 | struct Scsi_Host *shost = vport_to_shost(vport); \ |
1439 | struct fc_internal *i = to_fc_internal(shost->transportt); \ | |
1440 | char *cp; \ | |
1441 | if (vport->flags & (FC_VPORT_DEL | FC_VPORT_CREATING)) \ | |
1442 | return -EBUSY; \ | |
1443 | val = simple_strtoul(buf, &cp, 0); \ | |
1444 | if (*cp && (*cp != '\n')) \ | |
1445 | return -EINVAL; \ | |
1446 | i->f->set_vport_##field(vport, val); \ | |
1447 | return count; \ | |
1448 | } | |
1449 | ||
1450 | #define fc_vport_store_str_function(field, slen) \ | |
1451 | static ssize_t \ | |
ee959b00 TJ |
1452 | store_fc_vport_##field(struct device *dev, \ |
1453 | struct device_attribute *attr, \ | |
1454 | const char *buf, size_t count) \ | |
a53eb5e0 | 1455 | { \ |
ee959b00 | 1456 | struct fc_vport *vport = transport_class_to_vport(dev); \ |
a53eb5e0 JS |
1457 | struct Scsi_Host *shost = vport_to_shost(vport); \ |
1458 | struct fc_internal *i = to_fc_internal(shost->transportt); \ | |
1459 | unsigned int cnt=count; \ | |
1460 | \ | |
1461 | /* count may include a LF at end of string */ \ | |
1462 | if (buf[cnt-1] == '\n') \ | |
1463 | cnt--; \ | |
1464 | if (cnt > ((slen) - 1)) \ | |
1465 | return -EINVAL; \ | |
1466 | memcpy(vport->field, buf, cnt); \ | |
1467 | i->f->set_vport_##field(vport); \ | |
1468 | return count; \ | |
1469 | } | |
1470 | ||
1471 | #define fc_vport_rd_attr(field, format_string, sz) \ | |
1472 | fc_vport_show_function(field, format_string, sz, ) \ | |
ee959b00 | 1473 | static FC_DEVICE_ATTR(vport, field, S_IRUGO, \ |
a53eb5e0 JS |
1474 | show_fc_vport_##field, NULL) |
1475 | ||
1476 | #define fc_vport_rd_attr_cast(field, format_string, sz, cast) \ | |
1477 | fc_vport_show_function(field, format_string, sz, (cast)) \ | |
ee959b00 | 1478 | static FC_DEVICE_ATTR(vport, field, S_IRUGO, \ |
a53eb5e0 JS |
1479 | show_fc_vport_##field, NULL) |
1480 | ||
1481 | #define fc_vport_rw_attr(field, format_string, sz) \ | |
1482 | fc_vport_show_function(field, format_string, sz, ) \ | |
1483 | fc_vport_store_function(field) \ | |
ee959b00 | 1484 | static FC_DEVICE_ATTR(vport, field, S_IRUGO | S_IWUSR, \ |
a53eb5e0 JS |
1485 | show_fc_vport_##field, \ |
1486 | store_fc_vport_##field) | |
1487 | ||
1488 | #define fc_private_vport_show_function(field, format_string, sz, cast) \ | |
1489 | static ssize_t \ | |
ee959b00 TJ |
1490 | show_fc_vport_##field (struct device *dev, \ |
1491 | struct device_attribute *attr, char *buf) \ | |
a53eb5e0 | 1492 | { \ |
ee959b00 | 1493 | struct fc_vport *vport = transport_class_to_vport(dev); \ |
a53eb5e0 JS |
1494 | return snprintf(buf, sz, format_string, cast vport->field); \ |
1495 | } | |
1496 | ||
1497 | #define fc_private_vport_store_u32_function(field) \ | |
1498 | static ssize_t \ | |
ee959b00 TJ |
1499 | store_fc_vport_##field(struct device *dev, \ |
1500 | struct device_attribute *attr, \ | |
1501 | const char *buf, size_t count) \ | |
a53eb5e0 JS |
1502 | { \ |
1503 | u32 val; \ | |
ee959b00 | 1504 | struct fc_vport *vport = transport_class_to_vport(dev); \ |
a53eb5e0 JS |
1505 | char *cp; \ |
1506 | if (vport->flags & (FC_VPORT_DEL | FC_VPORT_CREATING)) \ | |
1507 | return -EBUSY; \ | |
1508 | val = simple_strtoul(buf, &cp, 0); \ | |
1509 | if (*cp && (*cp != '\n')) \ | |
1510 | return -EINVAL; \ | |
1511 | vport->field = val; \ | |
1512 | return count; \ | |
1513 | } | |
1514 | ||
1515 | ||
1516 | #define fc_private_vport_rd_attr(field, format_string, sz) \ | |
1517 | fc_private_vport_show_function(field, format_string, sz, ) \ | |
ee959b00 | 1518 | static FC_DEVICE_ATTR(vport, field, S_IRUGO, \ |
a53eb5e0 JS |
1519 | show_fc_vport_##field, NULL) |
1520 | ||
1521 | #define fc_private_vport_rd_attr_cast(field, format_string, sz, cast) \ | |
1522 | fc_private_vport_show_function(field, format_string, sz, (cast)) \ | |
ee959b00 | 1523 | static FC_DEVICE_ATTR(vport, field, S_IRUGO, \ |
a53eb5e0 JS |
1524 | show_fc_vport_##field, NULL) |
1525 | ||
1526 | #define fc_private_vport_rw_u32_attr(field, format_string, sz) \ | |
1527 | fc_private_vport_show_function(field, format_string, sz, ) \ | |
1528 | fc_private_vport_store_u32_function(field) \ | |
ee959b00 | 1529 | static FC_DEVICE_ATTR(vport, field, S_IRUGO | S_IWUSR, \ |
a53eb5e0 JS |
1530 | show_fc_vport_##field, \ |
1531 | store_fc_vport_##field) | |
1532 | ||
1533 | ||
1534 | #define fc_private_vport_rd_enum_attr(title, maxlen) \ | |
1535 | static ssize_t \ | |
ee959b00 TJ |
1536 | show_fc_vport_##title (struct device *dev, \ |
1537 | struct device_attribute *attr, \ | |
1538 | char *buf) \ | |
a53eb5e0 | 1539 | { \ |
ee959b00 | 1540 | struct fc_vport *vport = transport_class_to_vport(dev); \ |
a53eb5e0 JS |
1541 | const char *name; \ |
1542 | name = get_fc_##title##_name(vport->title); \ | |
1543 | if (!name) \ | |
1544 | return -EINVAL; \ | |
1545 | return snprintf(buf, maxlen, "%s\n", name); \ | |
1546 | } \ | |
ee959b00 | 1547 | static FC_DEVICE_ATTR(vport, title, S_IRUGO, \ |
a53eb5e0 JS |
1548 | show_fc_vport_##title, NULL) |
1549 | ||
1550 | ||
1551 | #define SETUP_VPORT_ATTRIBUTE_RD(field) \ | |
ee959b00 | 1552 | i->private_vport_attrs[count] = device_attr_vport_##field; \ |
a53eb5e0 JS |
1553 | i->private_vport_attrs[count].attr.mode = S_IRUGO; \ |
1554 | i->private_vport_attrs[count].store = NULL; \ | |
1555 | i->vport_attrs[count] = &i->private_vport_attrs[count]; \ | |
1556 | if (i->f->get_##field) \ | |
1557 | count++ | |
1558 | /* NOTE: Above MACRO differs: checks function not show bit */ | |
1559 | ||
1560 | #define SETUP_PRIVATE_VPORT_ATTRIBUTE_RD(field) \ | |
ee959b00 | 1561 | i->private_vport_attrs[count] = device_attr_vport_##field; \ |
a53eb5e0 JS |
1562 | i->private_vport_attrs[count].attr.mode = S_IRUGO; \ |
1563 | i->private_vport_attrs[count].store = NULL; \ | |
1564 | i->vport_attrs[count] = &i->private_vport_attrs[count]; \ | |
1565 | count++ | |
1566 | ||
1567 | #define SETUP_VPORT_ATTRIBUTE_WR(field) \ | |
ee959b00 | 1568 | i->private_vport_attrs[count] = device_attr_vport_##field; \ |
a53eb5e0 JS |
1569 | i->vport_attrs[count] = &i->private_vport_attrs[count]; \ |
1570 | if (i->f->field) \ | |
1571 | count++ | |
1572 | /* NOTE: Above MACRO differs: checks function */ | |
1573 | ||
1574 | #define SETUP_VPORT_ATTRIBUTE_RW(field) \ | |
ee959b00 | 1575 | i->private_vport_attrs[count] = device_attr_vport_##field; \ |
a53eb5e0 JS |
1576 | if (!i->f->set_vport_##field) { \ |
1577 | i->private_vport_attrs[count].attr.mode = S_IRUGO; \ | |
1578 | i->private_vport_attrs[count].store = NULL; \ | |
1579 | } \ | |
1580 | i->vport_attrs[count] = &i->private_vport_attrs[count]; \ | |
1581 | count++ | |
1582 | /* NOTE: Above MACRO differs: does not check show bit */ | |
1583 | ||
1584 | #define SETUP_PRIVATE_VPORT_ATTRIBUTE_RW(field) \ | |
1585 | { \ | |
ee959b00 | 1586 | i->private_vport_attrs[count] = device_attr_vport_##field; \ |
a53eb5e0 JS |
1587 | i->vport_attrs[count] = &i->private_vport_attrs[count]; \ |
1588 | count++; \ | |
1589 | } | |
1590 | ||
1591 | ||
1592 | /* The FC Transport Virtual Port Attributes: */ | |
1593 | ||
1594 | /* Fixed Virtual Port Attributes */ | |
1595 | ||
1596 | /* Dynamic Virtual Port Attributes */ | |
1597 | ||
1598 | /* Private Virtual Port Attributes */ | |
1599 | ||
1600 | fc_private_vport_rd_enum_attr(vport_state, FC_VPORTSTATE_MAX_NAMELEN); | |
1601 | fc_private_vport_rd_enum_attr(vport_last_state, FC_VPORTSTATE_MAX_NAMELEN); | |
1602 | fc_private_vport_rd_attr_cast(node_name, "0x%llx\n", 20, unsigned long long); | |
1603 | fc_private_vport_rd_attr_cast(port_name, "0x%llx\n", 20, unsigned long long); | |
1604 | ||
1605 | static ssize_t | |
ee959b00 TJ |
1606 | show_fc_vport_roles (struct device *dev, struct device_attribute *attr, |
1607 | char *buf) | |
a53eb5e0 | 1608 | { |
ee959b00 | 1609 | struct fc_vport *vport = transport_class_to_vport(dev); |
a53eb5e0 JS |
1610 | |
1611 | if (vport->roles == FC_PORT_ROLE_UNKNOWN) | |
1612 | return snprintf(buf, 20, "unknown\n"); | |
1613 | return get_fc_port_roles_names(vport->roles, buf); | |
1614 | } | |
ee959b00 | 1615 | static FC_DEVICE_ATTR(vport, roles, S_IRUGO, show_fc_vport_roles, NULL); |
a53eb5e0 JS |
1616 | |
1617 | fc_private_vport_rd_enum_attr(vport_type, FC_PORTTYPE_MAX_NAMELEN); | |
1618 | ||
1619 | fc_private_vport_show_function(symbolic_name, "%s\n", | |
1620 | FC_VPORT_SYMBOLIC_NAMELEN + 1, ) | |
1621 | fc_vport_store_str_function(symbolic_name, FC_VPORT_SYMBOLIC_NAMELEN) | |
ee959b00 | 1622 | static FC_DEVICE_ATTR(vport, symbolic_name, S_IRUGO | S_IWUSR, |
a53eb5e0 JS |
1623 | show_fc_vport_symbolic_name, store_fc_vport_symbolic_name); |
1624 | ||
1625 | static ssize_t | |
ee959b00 TJ |
1626 | store_fc_vport_delete(struct device *dev, struct device_attribute *attr, |
1627 | const char *buf, size_t count) | |
a53eb5e0 | 1628 | { |
ee959b00 | 1629 | struct fc_vport *vport = transport_class_to_vport(dev); |
9ef3e4a4 | 1630 | struct Scsi_Host *shost = vport_to_shost(vport); |
0d9dc7c8 GR |
1631 | unsigned long flags; |
1632 | ||
1633 | spin_lock_irqsave(shost->host_lock, flags); | |
260f4aed | 1634 | if (vport->flags & (FC_VPORT_DEL | FC_VPORT_CREATING | FC_VPORT_DELETING)) { |
0d9dc7c8 GR |
1635 | spin_unlock_irqrestore(shost->host_lock, flags); |
1636 | return -EBUSY; | |
1637 | } | |
1638 | vport->flags |= FC_VPORT_DELETING; | |
1639 | spin_unlock_irqrestore(shost->host_lock, flags); | |
a53eb5e0 | 1640 | |
9ef3e4a4 | 1641 | fc_queue_work(shost, &vport->vport_delete_work); |
a53eb5e0 JS |
1642 | return count; |
1643 | } | |
ee959b00 | 1644 | static FC_DEVICE_ATTR(vport, vport_delete, S_IWUSR, |
a53eb5e0 JS |
1645 | NULL, store_fc_vport_delete); |
1646 | ||
1647 | ||
1648 | /* | |
1649 | * Enable/Disable vport | |
1650 | * Write "1" to disable, write "0" to enable | |
1651 | */ | |
1652 | static ssize_t | |
ee959b00 TJ |
1653 | store_fc_vport_disable(struct device *dev, struct device_attribute *attr, |
1654 | const char *buf, | |
a53eb5e0 JS |
1655 | size_t count) |
1656 | { | |
ee959b00 | 1657 | struct fc_vport *vport = transport_class_to_vport(dev); |
a53eb5e0 JS |
1658 | struct Scsi_Host *shost = vport_to_shost(vport); |
1659 | struct fc_internal *i = to_fc_internal(shost->transportt); | |
1660 | int stat; | |
1661 | ||
1662 | if (vport->flags & (FC_VPORT_DEL | FC_VPORT_CREATING)) | |
1663 | return -EBUSY; | |
1664 | ||
1665 | if (*buf == '0') { | |
1666 | if (vport->vport_state != FC_VPORT_DISABLED) | |
1667 | return -EALREADY; | |
1668 | } else if (*buf == '1') { | |
1669 | if (vport->vport_state == FC_VPORT_DISABLED) | |
1670 | return -EALREADY; | |
1671 | } else | |
1672 | return -EINVAL; | |
1673 | ||
1674 | stat = i->f->vport_disable(vport, ((*buf == '0') ? false : true)); | |
1675 | return stat ? stat : count; | |
1676 | } | |
ee959b00 | 1677 | static FC_DEVICE_ATTR(vport, vport_disable, S_IWUSR, |
a53eb5e0 JS |
1678 | NULL, store_fc_vport_disable); |
1679 | ||
1680 | ||
1da177e4 LT |
1681 | /* |
1682 | * Host Attribute Management | |
1683 | */ | |
1684 | ||
1685 | #define fc_host_show_function(field, format_string, sz, cast) \ | |
1686 | static ssize_t \ | |
ee959b00 TJ |
1687 | show_fc_host_##field (struct device *dev, \ |
1688 | struct device_attribute *attr, char *buf) \ | |
1da177e4 | 1689 | { \ |
ee959b00 | 1690 | struct Scsi_Host *shost = transport_class_to_shost(dev); \ |
1da177e4 LT |
1691 | struct fc_internal *i = to_fc_internal(shost->transportt); \ |
1692 | if (i->f->get_host_##field) \ | |
1693 | i->f->get_host_##field(shost); \ | |
1694 | return snprintf(buf, sz, format_string, cast fc_host_##field(shost)); \ | |
1695 | } | |
1696 | ||
1697 | #define fc_host_store_function(field) \ | |
1698 | static ssize_t \ | |
ee959b00 TJ |
1699 | store_fc_host_##field(struct device *dev, \ |
1700 | struct device_attribute *attr, \ | |
1701 | const char *buf, size_t count) \ | |
1da177e4 LT |
1702 | { \ |
1703 | int val; \ | |
ee959b00 | 1704 | struct Scsi_Host *shost = transport_class_to_shost(dev); \ |
1da177e4 | 1705 | struct fc_internal *i = to_fc_internal(shost->transportt); \ |
0f29b966 | 1706 | char *cp; \ |
1da177e4 | 1707 | \ |
0f29b966 JS |
1708 | val = simple_strtoul(buf, &cp, 0); \ |
1709 | if (*cp && (*cp != '\n')) \ | |
1710 | return -EINVAL; \ | |
1da177e4 LT |
1711 | i->f->set_host_##field(shost, val); \ |
1712 | return count; \ | |
1713 | } | |
1714 | ||
b8d08210 JS |
1715 | #define fc_host_store_str_function(field, slen) \ |
1716 | static ssize_t \ | |
ee959b00 TJ |
1717 | store_fc_host_##field(struct device *dev, \ |
1718 | struct device_attribute *attr, \ | |
1719 | const char *buf, size_t count) \ | |
b8d08210 | 1720 | { \ |
ee959b00 | 1721 | struct Scsi_Host *shost = transport_class_to_shost(dev); \ |
b8d08210 JS |
1722 | struct fc_internal *i = to_fc_internal(shost->transportt); \ |
1723 | unsigned int cnt=count; \ | |
1724 | \ | |
1725 | /* count may include a LF at end of string */ \ | |
1726 | if (buf[cnt-1] == '\n') \ | |
1727 | cnt--; \ | |
1728 | if (cnt > ((slen) - 1)) \ | |
1729 | return -EINVAL; \ | |
1730 | memcpy(fc_host_##field(shost), buf, cnt); \ | |
1731 | i->f->set_host_##field(shost); \ | |
1732 | return count; \ | |
1733 | } | |
1734 | ||
1da177e4 LT |
1735 | #define fc_host_rd_attr(field, format_string, sz) \ |
1736 | fc_host_show_function(field, format_string, sz, ) \ | |
ee959b00 | 1737 | static FC_DEVICE_ATTR(host, field, S_IRUGO, \ |
1da177e4 LT |
1738 | show_fc_host_##field, NULL) |
1739 | ||
1740 | #define fc_host_rd_attr_cast(field, format_string, sz, cast) \ | |
1741 | fc_host_show_function(field, format_string, sz, (cast)) \ | |
ee959b00 | 1742 | static FC_DEVICE_ATTR(host, field, S_IRUGO, \ |
1da177e4 LT |
1743 | show_fc_host_##field, NULL) |
1744 | ||
1745 | #define fc_host_rw_attr(field, format_string, sz) \ | |
1746 | fc_host_show_function(field, format_string, sz, ) \ | |
1747 | fc_host_store_function(field) \ | |
ee959b00 | 1748 | static FC_DEVICE_ATTR(host, field, S_IRUGO | S_IWUSR, \ |
1da177e4 LT |
1749 | show_fc_host_##field, \ |
1750 | store_fc_host_##field) | |
1751 | ||
1752 | #define fc_host_rd_enum_attr(title, maxlen) \ | |
1753 | static ssize_t \ | |
ee959b00 TJ |
1754 | show_fc_host_##title (struct device *dev, \ |
1755 | struct device_attribute *attr, char *buf) \ | |
1da177e4 | 1756 | { \ |
ee959b00 | 1757 | struct Scsi_Host *shost = transport_class_to_shost(dev); \ |
1da177e4 LT |
1758 | struct fc_internal *i = to_fc_internal(shost->transportt); \ |
1759 | const char *name; \ | |
1760 | if (i->f->get_host_##title) \ | |
1761 | i->f->get_host_##title(shost); \ | |
1762 | name = get_fc_##title##_name(fc_host_##title(shost)); \ | |
1763 | if (!name) \ | |
1764 | return -EINVAL; \ | |
1765 | return snprintf(buf, maxlen, "%s\n", name); \ | |
1766 | } \ | |
ee959b00 | 1767 | static FC_DEVICE_ATTR(host, title, S_IRUGO, show_fc_host_##title, NULL) |
1da177e4 LT |
1768 | |
1769 | #define SETUP_HOST_ATTRIBUTE_RD(field) \ | |
ee959b00 | 1770 | i->private_host_attrs[count] = device_attr_host_##field; \ |
1da177e4 LT |
1771 | i->private_host_attrs[count].attr.mode = S_IRUGO; \ |
1772 | i->private_host_attrs[count].store = NULL; \ | |
1773 | i->host_attrs[count] = &i->private_host_attrs[count]; \ | |
1774 | if (i->f->show_host_##field) \ | |
1775 | count++ | |
1776 | ||
a53eb5e0 | 1777 | #define SETUP_HOST_ATTRIBUTE_RD_NS(field) \ |
ee959b00 | 1778 | i->private_host_attrs[count] = device_attr_host_##field; \ |
a53eb5e0 JS |
1779 | i->private_host_attrs[count].attr.mode = S_IRUGO; \ |
1780 | i->private_host_attrs[count].store = NULL; \ | |
1781 | i->host_attrs[count] = &i->private_host_attrs[count]; \ | |
1782 | count++ | |
1783 | ||
1da177e4 | 1784 | #define SETUP_HOST_ATTRIBUTE_RW(field) \ |
ee959b00 | 1785 | i->private_host_attrs[count] = device_attr_host_##field; \ |
1da177e4 LT |
1786 | if (!i->f->set_host_##field) { \ |
1787 | i->private_host_attrs[count].attr.mode = S_IRUGO; \ | |
1788 | i->private_host_attrs[count].store = NULL; \ | |
1789 | } \ | |
1790 | i->host_attrs[count] = &i->private_host_attrs[count]; \ | |
1791 | if (i->f->show_host_##field) \ | |
1792 | count++ | |
1793 | ||
1794 | ||
1795 | #define fc_private_host_show_function(field, format_string, sz, cast) \ | |
1796 | static ssize_t \ | |
ee959b00 TJ |
1797 | show_fc_host_##field (struct device *dev, \ |
1798 | struct device_attribute *attr, char *buf) \ | |
1da177e4 | 1799 | { \ |
ee959b00 | 1800 | struct Scsi_Host *shost = transport_class_to_shost(dev); \ |
1da177e4 LT |
1801 | return snprintf(buf, sz, format_string, cast fc_host_##field(shost)); \ |
1802 | } | |
1803 | ||
1804 | #define fc_private_host_rd_attr(field, format_string, sz) \ | |
1805 | fc_private_host_show_function(field, format_string, sz, ) \ | |
ee959b00 | 1806 | static FC_DEVICE_ATTR(host, field, S_IRUGO, \ |
1da177e4 LT |
1807 | show_fc_host_##field, NULL) |
1808 | ||
1809 | #define fc_private_host_rd_attr_cast(field, format_string, sz, cast) \ | |
1810 | fc_private_host_show_function(field, format_string, sz, (cast)) \ | |
ee959b00 | 1811 | static FC_DEVICE_ATTR(host, field, S_IRUGO, \ |
1da177e4 LT |
1812 | show_fc_host_##field, NULL) |
1813 | ||
1814 | #define SETUP_PRIVATE_HOST_ATTRIBUTE_RD(field) \ | |
ee959b00 | 1815 | i->private_host_attrs[count] = device_attr_host_##field; \ |
1da177e4 LT |
1816 | i->private_host_attrs[count].attr.mode = S_IRUGO; \ |
1817 | i->private_host_attrs[count].store = NULL; \ | |
1818 | i->host_attrs[count] = &i->private_host_attrs[count]; \ | |
1819 | count++ | |
1820 | ||
1821 | #define SETUP_PRIVATE_HOST_ATTRIBUTE_RW(field) \ | |
91ca7b01 | 1822 | { \ |
ee959b00 | 1823 | i->private_host_attrs[count] = device_attr_host_##field; \ |
1da177e4 | 1824 | i->host_attrs[count] = &i->private_host_attrs[count]; \ |
91ca7b01 AV |
1825 | count++; \ |
1826 | } | |
1da177e4 LT |
1827 | |
1828 | ||
1829 | /* Fixed Host Attributes */ | |
1830 | ||
1831 | static ssize_t | |
ee959b00 TJ |
1832 | show_fc_host_supported_classes (struct device *dev, |
1833 | struct device_attribute *attr, char *buf) | |
1da177e4 | 1834 | { |
ee959b00 | 1835 | struct Scsi_Host *shost = transport_class_to_shost(dev); |
1da177e4 LT |
1836 | |
1837 | if (fc_host_supported_classes(shost) == FC_COS_UNSPECIFIED) | |
1838 | return snprintf(buf, 20, "unspecified\n"); | |
1839 | ||
1840 | return get_fc_cos_names(fc_host_supported_classes(shost), buf); | |
1841 | } | |
ee959b00 | 1842 | static FC_DEVICE_ATTR(host, supported_classes, S_IRUGO, |
1da177e4 LT |
1843 | show_fc_host_supported_classes, NULL); |
1844 | ||
1845 | static ssize_t | |
ee959b00 TJ |
1846 | show_fc_host_supported_fc4s (struct device *dev, |
1847 | struct device_attribute *attr, char *buf) | |
1da177e4 | 1848 | { |
ee959b00 | 1849 | struct Scsi_Host *shost = transport_class_to_shost(dev); |
1da177e4 LT |
1850 | return (ssize_t)show_fc_fc4s(buf, fc_host_supported_fc4s(shost)); |
1851 | } | |
ee959b00 | 1852 | static FC_DEVICE_ATTR(host, supported_fc4s, S_IRUGO, |
1da177e4 LT |
1853 | show_fc_host_supported_fc4s, NULL); |
1854 | ||
1855 | static ssize_t | |
ee959b00 TJ |
1856 | show_fc_host_supported_speeds (struct device *dev, |
1857 | struct device_attribute *attr, char *buf) | |
1da177e4 | 1858 | { |
ee959b00 | 1859 | struct Scsi_Host *shost = transport_class_to_shost(dev); |
1da177e4 LT |
1860 | |
1861 | if (fc_host_supported_speeds(shost) == FC_PORTSPEED_UNKNOWN) | |
1862 | return snprintf(buf, 20, "unknown\n"); | |
1863 | ||
1864 | return get_fc_port_speed_names(fc_host_supported_speeds(shost), buf); | |
1865 | } | |
ee959b00 | 1866 | static FC_DEVICE_ATTR(host, supported_speeds, S_IRUGO, |
1da177e4 LT |
1867 | show_fc_host_supported_speeds, NULL); |
1868 | ||
1869 | ||
1870 | fc_private_host_rd_attr_cast(node_name, "0x%llx\n", 20, unsigned long long); | |
1871 | fc_private_host_rd_attr_cast(port_name, "0x%llx\n", 20, unsigned long long); | |
6b7281d0 AH |
1872 | fc_private_host_rd_attr_cast(permanent_port_name, "0x%llx\n", 20, |
1873 | unsigned long long); | |
1da177e4 | 1874 | fc_private_host_rd_attr(maxframe_size, "%u bytes\n", 20); |
a53eb5e0 | 1875 | fc_private_host_rd_attr(max_npiv_vports, "%u\n", 20); |
1da177e4 | 1876 | fc_private_host_rd_attr(serial_number, "%s\n", (FC_SERIAL_NUMBER_SIZE +1)); |
bb8ef587 NP |
1877 | fc_private_host_rd_attr(manufacturer, "%s\n", FC_SERIAL_NUMBER_SIZE + 1); |
1878 | fc_private_host_rd_attr(model, "%s\n", FC_SYMBOLIC_NAME_SIZE + 1); | |
1879 | fc_private_host_rd_attr(model_description, "%s\n", FC_SYMBOLIC_NAME_SIZE + 1); | |
1880 | fc_private_host_rd_attr(hardware_version, "%s\n", FC_VERSION_STRING_SIZE + 1); | |
1881 | fc_private_host_rd_attr(driver_version, "%s\n", FC_VERSION_STRING_SIZE + 1); | |
1882 | fc_private_host_rd_attr(firmware_version, "%s\n", FC_VERSION_STRING_SIZE + 1); | |
1883 | fc_private_host_rd_attr(optionrom_version, "%s\n", FC_VERSION_STRING_SIZE + 1); | |
1da177e4 LT |
1884 | |
1885 | ||
1886 | /* Dynamic Host Attributes */ | |
1887 | ||
1888 | static ssize_t | |
ee959b00 TJ |
1889 | show_fc_host_active_fc4s (struct device *dev, |
1890 | struct device_attribute *attr, char *buf) | |
1da177e4 | 1891 | { |
ee959b00 | 1892 | struct Scsi_Host *shost = transport_class_to_shost(dev); |
1da177e4 LT |
1893 | struct fc_internal *i = to_fc_internal(shost->transportt); |
1894 | ||
1895 | if (i->f->get_host_active_fc4s) | |
1896 | i->f->get_host_active_fc4s(shost); | |
1897 | ||
1898 | return (ssize_t)show_fc_fc4s(buf, fc_host_active_fc4s(shost)); | |
1899 | } | |
ee959b00 | 1900 | static FC_DEVICE_ATTR(host, active_fc4s, S_IRUGO, |
1da177e4 LT |
1901 | show_fc_host_active_fc4s, NULL); |
1902 | ||
1903 | static ssize_t | |
ee959b00 TJ |
1904 | show_fc_host_speed (struct device *dev, |
1905 | struct device_attribute *attr, char *buf) | |
1da177e4 | 1906 | { |
ee959b00 | 1907 | struct Scsi_Host *shost = transport_class_to_shost(dev); |
1da177e4 LT |
1908 | struct fc_internal *i = to_fc_internal(shost->transportt); |
1909 | ||
1910 | if (i->f->get_host_speed) | |
1911 | i->f->get_host_speed(shost); | |
1912 | ||
1913 | if (fc_host_speed(shost) == FC_PORTSPEED_UNKNOWN) | |
1914 | return snprintf(buf, 20, "unknown\n"); | |
1915 | ||
1916 | return get_fc_port_speed_names(fc_host_speed(shost), buf); | |
1917 | } | |
ee959b00 | 1918 | static FC_DEVICE_ATTR(host, speed, S_IRUGO, |
1da177e4 LT |
1919 | show_fc_host_speed, NULL); |
1920 | ||
1921 | ||
1922 | fc_host_rd_attr(port_id, "0x%06x\n", 20); | |
1923 | fc_host_rd_enum_attr(port_type, FC_PORTTYPE_MAX_NAMELEN); | |
1924 | fc_host_rd_enum_attr(port_state, FC_PORTSTATE_MAX_NAMELEN); | |
1925 | fc_host_rd_attr_cast(fabric_name, "0x%llx\n", 20, unsigned long long); | |
016131b8 | 1926 | fc_host_rd_attr(symbolic_name, "%s\n", FC_SYMBOLIC_NAME_SIZE + 1); |
1da177e4 | 1927 | |
b8d08210 JS |
1928 | fc_private_host_show_function(system_hostname, "%s\n", |
1929 | FC_SYMBOLIC_NAME_SIZE + 1, ) | |
1930 | fc_host_store_str_function(system_hostname, FC_SYMBOLIC_NAME_SIZE) | |
ee959b00 | 1931 | static FC_DEVICE_ATTR(host, system_hostname, S_IRUGO | S_IWUSR, |
b8d08210 JS |
1932 | show_fc_host_system_hostname, store_fc_host_system_hostname); |
1933 | ||
1da177e4 LT |
1934 | |
1935 | /* Private Host Attributes */ | |
1936 | ||
1937 | static ssize_t | |
ee959b00 TJ |
1938 | show_fc_private_host_tgtid_bind_type(struct device *dev, |
1939 | struct device_attribute *attr, char *buf) | |
1da177e4 | 1940 | { |
ee959b00 | 1941 | struct Scsi_Host *shost = transport_class_to_shost(dev); |
1da177e4 LT |
1942 | const char *name; |
1943 | ||
1944 | name = get_fc_tgtid_bind_type_name(fc_host_tgtid_bind_type(shost)); | |
1945 | if (!name) | |
1946 | return -EINVAL; | |
1947 | return snprintf(buf, FC_BINDTYPE_MAX_NAMELEN, "%s\n", name); | |
1948 | } | |
1949 | ||
d16794f6 JSEC |
1950 | #define get_list_head_entry(pos, head, member) \ |
1951 | pos = list_entry((head)->next, typeof(*pos), member) | |
1952 | ||
1da177e4 | 1953 | static ssize_t |
ee959b00 TJ |
1954 | store_fc_private_host_tgtid_bind_type(struct device *dev, |
1955 | struct device_attribute *attr, const char *buf, size_t count) | |
1da177e4 | 1956 | { |
ee959b00 | 1957 | struct Scsi_Host *shost = transport_class_to_shost(dev); |
d16794f6 | 1958 | struct fc_rport *rport; |
1da177e4 LT |
1959 | enum fc_tgtid_binding_type val; |
1960 | unsigned long flags; | |
1961 | ||
1962 | if (get_fc_tgtid_bind_type_match(buf, &val)) | |
1963 | return -EINVAL; | |
1964 | ||
1965 | /* if changing bind type, purge all unused consistent bindings */ | |
1966 | if (val != fc_host_tgtid_bind_type(shost)) { | |
1967 | spin_lock_irqsave(shost->host_lock, flags); | |
d16794f6 JSEC |
1968 | while (!list_empty(&fc_host_rport_bindings(shost))) { |
1969 | get_list_head_entry(rport, | |
1970 | &fc_host_rport_bindings(shost), peers); | |
aedf3497 JS |
1971 | list_del(&rport->peers); |
1972 | rport->port_state = FC_PORTSTATE_DELETED; | |
1973 | fc_queue_work(shost, &rport->rport_delete_work); | |
d16794f6 | 1974 | } |
1da177e4 LT |
1975 | spin_unlock_irqrestore(shost->host_lock, flags); |
1976 | } | |
1977 | ||
1978 | fc_host_tgtid_bind_type(shost) = val; | |
1979 | return count; | |
1980 | } | |
1981 | ||
ee959b00 | 1982 | static FC_DEVICE_ATTR(host, tgtid_bind_type, S_IRUGO | S_IWUSR, |
1da177e4 LT |
1983 | show_fc_private_host_tgtid_bind_type, |
1984 | store_fc_private_host_tgtid_bind_type); | |
1985 | ||
91ca7b01 | 1986 | static ssize_t |
ee959b00 TJ |
1987 | store_fc_private_host_issue_lip(struct device *dev, |
1988 | struct device_attribute *attr, const char *buf, size_t count) | |
91ca7b01 | 1989 | { |
ee959b00 | 1990 | struct Scsi_Host *shost = transport_class_to_shost(dev); |
91ca7b01 AV |
1991 | struct fc_internal *i = to_fc_internal(shost->transportt); |
1992 | int ret; | |
1993 | ||
1994 | /* ignore any data value written to the attribute */ | |
1995 | if (i->f->issue_fc_host_lip) { | |
1996 | ret = i->f->issue_fc_host_lip(shost); | |
1997 | return ret ? ret: count; | |
1998 | } | |
1999 | ||
2000 | return -ENOENT; | |
2001 | } | |
2002 | ||
ee959b00 | 2003 | static FC_DEVICE_ATTR(host, issue_lip, S_IWUSR, NULL, |
91ca7b01 AV |
2004 | store_fc_private_host_issue_lip); |
2005 | ||
43ca910a MC |
2006 | static ssize_t |
2007 | store_fc_private_host_dev_loss_tmo(struct device *dev, | |
2008 | struct device_attribute *attr, | |
2009 | const char *buf, size_t count) | |
2010 | { | |
2011 | struct Scsi_Host *shost = transport_class_to_shost(dev); | |
2012 | struct fc_host_attrs *fc_host = shost_to_fc_host(shost); | |
2013 | struct fc_rport *rport; | |
2014 | unsigned long val, flags; | |
2015 | int rc; | |
2016 | ||
2017 | rc = fc_str_to_dev_loss(buf, &val); | |
2018 | if (rc) | |
2019 | return rc; | |
2020 | ||
2021 | fc_host_dev_loss_tmo(shost) = val; | |
2022 | spin_lock_irqsave(shost->host_lock, flags); | |
2023 | list_for_each_entry(rport, &fc_host->rports, peers) | |
2024 | fc_rport_set_dev_loss_tmo(rport, val); | |
2025 | spin_unlock_irqrestore(shost->host_lock, flags); | |
2026 | return count; | |
2027 | } | |
a53eb5e0 | 2028 | |
43ca910a MC |
2029 | fc_private_host_show_function(dev_loss_tmo, "%d\n", 20, ); |
2030 | static FC_DEVICE_ATTR(host, dev_loss_tmo, S_IRUGO | S_IWUSR, | |
2031 | show_fc_host_dev_loss_tmo, | |
2032 | store_fc_private_host_dev_loss_tmo); | |
2033 | ||
2034 | fc_private_host_rd_attr(npiv_vports_inuse, "%u\n", 20); | |
a53eb5e0 | 2035 | |
1da177e4 LT |
2036 | /* |
2037 | * Host Statistics Management | |
2038 | */ | |
2039 | ||
134699d2 | 2040 | /* Show a given attribute in the statistics group */ |
1da177e4 | 2041 | static ssize_t |
ee959b00 | 2042 | fc_stat_show(const struct device *dev, char *buf, unsigned long offset) |
1da177e4 | 2043 | { |
ee959b00 | 2044 | struct Scsi_Host *shost = transport_class_to_shost(dev); |
1da177e4 LT |
2045 | struct fc_internal *i = to_fc_internal(shost->transportt); |
2046 | struct fc_host_statistics *stats; | |
2047 | ssize_t ret = -ENOENT; | |
2048 | ||
2049 | if (offset > sizeof(struct fc_host_statistics) || | |
2050 | offset % sizeof(u64) != 0) | |
2051 | WARN_ON(1); | |
2052 | ||
2053 | if (i->f->get_fc_host_stats) { | |
2054 | stats = (i->f->get_fc_host_stats)(shost); | |
2055 | if (stats) | |
2056 | ret = snprintf(buf, 20, "0x%llx\n", | |
2057 | (unsigned long long)*(u64 *)(((u8 *) stats) + offset)); | |
2058 | } | |
2059 | return ret; | |
2060 | } | |
2061 | ||
2062 | ||
2063 | /* generate a read-only statistics attribute */ | |
2064 | #define fc_host_statistic(name) \ | |
ee959b00 TJ |
2065 | static ssize_t show_fcstat_##name(struct device *cd, \ |
2066 | struct device_attribute *attr, \ | |
2067 | char *buf) \ | |
1da177e4 LT |
2068 | { \ |
2069 | return fc_stat_show(cd, buf, \ | |
2070 | offsetof(struct fc_host_statistics, name)); \ | |
2071 | } \ | |
ee959b00 | 2072 | static FC_DEVICE_ATTR(host, name, S_IRUGO, show_fcstat_##name, NULL) |
1da177e4 LT |
2073 | |
2074 | fc_host_statistic(seconds_since_last_reset); | |
2075 | fc_host_statistic(tx_frames); | |
2076 | fc_host_statistic(tx_words); | |
2077 | fc_host_statistic(rx_frames); | |
2078 | fc_host_statistic(rx_words); | |
2079 | fc_host_statistic(lip_count); | |
2080 | fc_host_statistic(nos_count); | |
2081 | fc_host_statistic(error_frames); | |
2082 | fc_host_statistic(dumped_frames); | |
2083 | fc_host_statistic(link_failure_count); | |
2084 | fc_host_statistic(loss_of_sync_count); | |
2085 | fc_host_statistic(loss_of_signal_count); | |
2086 | fc_host_statistic(prim_seq_protocol_err_count); | |
2087 | fc_host_statistic(invalid_tx_word_count); | |
2088 | fc_host_statistic(invalid_crc_count); | |
2089 | fc_host_statistic(fcp_input_requests); | |
2090 | fc_host_statistic(fcp_output_requests); | |
2091 | fc_host_statistic(fcp_control_requests); | |
2092 | fc_host_statistic(fcp_input_megabytes); | |
2093 | fc_host_statistic(fcp_output_megabytes); | |
e58abb0c VD |
2094 | fc_host_statistic(fcp_packet_alloc_failures); |
2095 | fc_host_statistic(fcp_packet_aborts); | |
2096 | fc_host_statistic(fcp_frame_alloc_failures); | |
2097 | fc_host_statistic(fc_no_free_exch); | |
2098 | fc_host_statistic(fc_no_free_exch_xid); | |
2099 | fc_host_statistic(fc_xid_not_found); | |
2100 | fc_host_statistic(fc_xid_busy); | |
2101 | fc_host_statistic(fc_seq_not_found); | |
2102 | fc_host_statistic(fc_non_bls_resp); | |
84610196 SS |
2103 | fc_host_statistic(cn_sig_warn); |
2104 | fc_host_statistic(cn_sig_alarm); | |
2105 | ||
1da177e4 | 2106 | |
547aab51 SS |
2107 | #define fc_host_fpin_statistic(name) \ |
2108 | static ssize_t fc_host_fpinstat_##name(struct device *cd, \ | |
2109 | struct device_attribute *attr, \ | |
2110 | char *buf) \ | |
2111 | { \ | |
2112 | struct Scsi_Host *shost = transport_class_to_shost(cd); \ | |
2113 | struct fc_host_attrs *fc_host = shost_to_fc_host(shost); \ | |
2114 | \ | |
2115 | return snprintf(buf, 20, "0x%llx\n", fc_host->fpin_stats.name); \ | |
2116 | } \ | |
2117 | static FC_DEVICE_ATTR(host, fpin_##name, 0444, fc_host_fpinstat_##name, NULL) | |
2118 | ||
2119 | fc_host_fpin_statistic(dn); | |
2120 | fc_host_fpin_statistic(dn_unknown); | |
2121 | fc_host_fpin_statistic(dn_timeout); | |
2122 | fc_host_fpin_statistic(dn_unable_to_route); | |
2123 | fc_host_fpin_statistic(dn_device_specific); | |
2124 | fc_host_fpin_statistic(cn); | |
2125 | fc_host_fpin_statistic(cn_clear); | |
2126 | fc_host_fpin_statistic(cn_lost_credit); | |
2127 | fc_host_fpin_statistic(cn_credit_stall); | |
2128 | fc_host_fpin_statistic(cn_oversubscription); | |
2129 | fc_host_fpin_statistic(cn_device_specific); | |
2130 | fc_host_fpin_statistic(li); | |
2131 | fc_host_fpin_statistic(li_failure_unknown); | |
2132 | fc_host_fpin_statistic(li_link_failure_count); | |
2133 | fc_host_fpin_statistic(li_loss_of_sync_count); | |
2134 | fc_host_fpin_statistic(li_loss_of_signals_count); | |
2135 | fc_host_fpin_statistic(li_prim_seq_err_count); | |
2136 | fc_host_fpin_statistic(li_invalid_tx_word_count); | |
2137 | fc_host_fpin_statistic(li_invalid_crc_count); | |
2138 | fc_host_fpin_statistic(li_device_specific); | |
2139 | ||
1da177e4 | 2140 | static ssize_t |
ee959b00 TJ |
2141 | fc_reset_statistics(struct device *dev, struct device_attribute *attr, |
2142 | const char *buf, size_t count) | |
1da177e4 | 2143 | { |
ee959b00 | 2144 | struct Scsi_Host *shost = transport_class_to_shost(dev); |
1da177e4 LT |
2145 | struct fc_internal *i = to_fc_internal(shost->transportt); |
2146 | ||
2147 | /* ignore any data value written to the attribute */ | |
2148 | if (i->f->reset_fc_host_stats) { | |
2149 | i->f->reset_fc_host_stats(shost); | |
2150 | return count; | |
2151 | } | |
2152 | ||
2153 | return -ENOENT; | |
2154 | } | |
ee959b00 | 2155 | static FC_DEVICE_ATTR(host, reset_statistics, S_IWUSR, NULL, |
1da177e4 LT |
2156 | fc_reset_statistics); |
2157 | ||
1da177e4 | 2158 | static struct attribute *fc_statistics_attrs[] = { |
ee959b00 TJ |
2159 | &device_attr_host_seconds_since_last_reset.attr, |
2160 | &device_attr_host_tx_frames.attr, | |
2161 | &device_attr_host_tx_words.attr, | |
2162 | &device_attr_host_rx_frames.attr, | |
2163 | &device_attr_host_rx_words.attr, | |
2164 | &device_attr_host_lip_count.attr, | |
2165 | &device_attr_host_nos_count.attr, | |
2166 | &device_attr_host_error_frames.attr, | |
2167 | &device_attr_host_dumped_frames.attr, | |
2168 | &device_attr_host_link_failure_count.attr, | |
2169 | &device_attr_host_loss_of_sync_count.attr, | |
2170 | &device_attr_host_loss_of_signal_count.attr, | |
2171 | &device_attr_host_prim_seq_protocol_err_count.attr, | |
2172 | &device_attr_host_invalid_tx_word_count.attr, | |
2173 | &device_attr_host_invalid_crc_count.attr, | |
2174 | &device_attr_host_fcp_input_requests.attr, | |
2175 | &device_attr_host_fcp_output_requests.attr, | |
2176 | &device_attr_host_fcp_control_requests.attr, | |
2177 | &device_attr_host_fcp_input_megabytes.attr, | |
2178 | &device_attr_host_fcp_output_megabytes.attr, | |
e58abb0c VD |
2179 | &device_attr_host_fcp_packet_alloc_failures.attr, |
2180 | &device_attr_host_fcp_packet_aborts.attr, | |
2181 | &device_attr_host_fcp_frame_alloc_failures.attr, | |
2182 | &device_attr_host_fc_no_free_exch.attr, | |
2183 | &device_attr_host_fc_no_free_exch_xid.attr, | |
2184 | &device_attr_host_fc_xid_not_found.attr, | |
2185 | &device_attr_host_fc_xid_busy.attr, | |
2186 | &device_attr_host_fc_seq_not_found.attr, | |
2187 | &device_attr_host_fc_non_bls_resp.attr, | |
84610196 SS |
2188 | &device_attr_host_cn_sig_warn.attr, |
2189 | &device_attr_host_cn_sig_alarm.attr, | |
ee959b00 | 2190 | &device_attr_host_reset_statistics.attr, |
547aab51 SS |
2191 | &device_attr_host_fpin_dn.attr, |
2192 | &device_attr_host_fpin_dn_unknown.attr, | |
2193 | &device_attr_host_fpin_dn_timeout.attr, | |
2194 | &device_attr_host_fpin_dn_unable_to_route.attr, | |
2195 | &device_attr_host_fpin_dn_device_specific.attr, | |
2196 | &device_attr_host_fpin_li.attr, | |
2197 | &device_attr_host_fpin_li_failure_unknown.attr, | |
2198 | &device_attr_host_fpin_li_link_failure_count.attr, | |
2199 | &device_attr_host_fpin_li_loss_of_sync_count.attr, | |
2200 | &device_attr_host_fpin_li_loss_of_signals_count.attr, | |
2201 | &device_attr_host_fpin_li_prim_seq_err_count.attr, | |
2202 | &device_attr_host_fpin_li_invalid_tx_word_count.attr, | |
2203 | &device_attr_host_fpin_li_invalid_crc_count.attr, | |
2204 | &device_attr_host_fpin_li_device_specific.attr, | |
2205 | &device_attr_host_fpin_cn.attr, | |
2206 | &device_attr_host_fpin_cn_clear.attr, | |
2207 | &device_attr_host_fpin_cn_lost_credit.attr, | |
2208 | &device_attr_host_fpin_cn_credit_stall.attr, | |
2209 | &device_attr_host_fpin_cn_oversubscription.attr, | |
2210 | &device_attr_host_fpin_cn_device_specific.attr, | |
1da177e4 LT |
2211 | NULL |
2212 | }; | |
2213 | ||
2214 | static struct attribute_group fc_statistics_group = { | |
2215 | .name = "statistics", | |
2216 | .attrs = fc_statistics_attrs, | |
2217 | }; | |
2218 | ||
a53eb5e0 JS |
2219 | |
2220 | /* Host Vport Attributes */ | |
2221 | ||
2222 | static int | |
2223 | fc_parse_wwn(const char *ns, u64 *nm) | |
2224 | { | |
2225 | unsigned int i, j; | |
2226 | u8 wwn[8]; | |
2227 | ||
2228 | memset(wwn, 0, sizeof(wwn)); | |
2229 | ||
2230 | /* Validate and store the new name */ | |
2231 | for (i=0, j=0; i < 16; i++) { | |
ecc30990 AS |
2232 | int value; |
2233 | ||
2234 | value = hex_to_bin(*ns++); | |
2235 | if (value >= 0) | |
2236 | j = (j << 4) | value; | |
a53eb5e0 JS |
2237 | else |
2238 | return -EINVAL; | |
2239 | if (i % 2) { | |
2240 | wwn[i/2] = j & 0xff; | |
2241 | j = 0; | |
2242 | } | |
2243 | } | |
2244 | ||
2245 | *nm = wwn_to_u64(wwn); | |
2246 | ||
2247 | return 0; | |
2248 | } | |
2249 | ||
2250 | ||
2251 | /* | |
2252 | * "Short-cut" sysfs variable to create a new vport on a FC Host. | |
2253 | * Input is a string of the form "<WWPN>:<WWNN>". Other attributes | |
2254 | * will default to a NPIV-based FCP_Initiator; The WWNs are specified | |
2255 | * as hex characters, and may *not* contain any prefixes (e.g. 0x, x, etc) | |
2256 | */ | |
2257 | static ssize_t | |
ee959b00 TJ |
2258 | store_fc_host_vport_create(struct device *dev, struct device_attribute *attr, |
2259 | const char *buf, size_t count) | |
a53eb5e0 | 2260 | { |
ee959b00 | 2261 | struct Scsi_Host *shost = transport_class_to_shost(dev); |
a53eb5e0 JS |
2262 | struct fc_vport_identifiers vid; |
2263 | struct fc_vport *vport; | |
2264 | unsigned int cnt=count; | |
2265 | int stat; | |
2266 | ||
2267 | memset(&vid, 0, sizeof(vid)); | |
2268 | ||
2269 | /* count may include a LF at end of string */ | |
2270 | if (buf[cnt-1] == '\n') | |
2271 | cnt--; | |
2272 | ||
2273 | /* validate we have enough characters for WWPN */ | |
2274 | if ((cnt != (16+1+16)) || (buf[16] != ':')) | |
2275 | return -EINVAL; | |
2276 | ||
2277 | stat = fc_parse_wwn(&buf[0], &vid.port_name); | |
2278 | if (stat) | |
2279 | return stat; | |
2280 | ||
2281 | stat = fc_parse_wwn(&buf[17], &vid.node_name); | |
2282 | if (stat) | |
2283 | return stat; | |
2284 | ||
2285 | vid.roles = FC_PORT_ROLE_FCP_INITIATOR; | |
2286 | vid.vport_type = FC_PORTTYPE_NPIV; | |
2287 | /* vid.symbolic_name is already zero/NULL's */ | |
2288 | vid.disable = false; /* always enabled */ | |
2289 | ||
2290 | /* we only allow support on Channel 0 !!! */ | |
a30c3f69 | 2291 | stat = fc_vport_setup(shost, 0, &shost->shost_gendev, &vid, &vport); |
a53eb5e0 JS |
2292 | return stat ? stat : count; |
2293 | } | |
ee959b00 | 2294 | static FC_DEVICE_ATTR(host, vport_create, S_IWUSR, NULL, |
a53eb5e0 JS |
2295 | store_fc_host_vport_create); |
2296 | ||
2297 | ||
2298 | /* | |
2299 | * "Short-cut" sysfs variable to delete a vport on a FC Host. | |
2300 | * Vport is identified by a string containing "<WWPN>:<WWNN>". | |
2301 | * The WWNs are specified as hex characters, and may *not* contain | |
2302 | * any prefixes (e.g. 0x, x, etc) | |
2303 | */ | |
2304 | static ssize_t | |
ee959b00 TJ |
2305 | store_fc_host_vport_delete(struct device *dev, struct device_attribute *attr, |
2306 | const char *buf, size_t count) | |
a53eb5e0 | 2307 | { |
ee959b00 | 2308 | struct Scsi_Host *shost = transport_class_to_shost(dev); |
a53eb5e0 JS |
2309 | struct fc_host_attrs *fc_host = shost_to_fc_host(shost); |
2310 | struct fc_vport *vport; | |
2311 | u64 wwpn, wwnn; | |
2312 | unsigned long flags; | |
2313 | unsigned int cnt=count; | |
2314 | int stat, match; | |
2315 | ||
2316 | /* count may include a LF at end of string */ | |
2317 | if (buf[cnt-1] == '\n') | |
2318 | cnt--; | |
2319 | ||
2320 | /* validate we have enough characters for WWPN */ | |
2321 | if ((cnt != (16+1+16)) || (buf[16] != ':')) | |
2322 | return -EINVAL; | |
2323 | ||
2324 | stat = fc_parse_wwn(&buf[0], &wwpn); | |
2325 | if (stat) | |
2326 | return stat; | |
2327 | ||
2328 | stat = fc_parse_wwn(&buf[17], &wwnn); | |
2329 | if (stat) | |
2330 | return stat; | |
2331 | ||
2332 | spin_lock_irqsave(shost->host_lock, flags); | |
2333 | match = 0; | |
2334 | /* we only allow support on Channel 0 !!! */ | |
2335 | list_for_each_entry(vport, &fc_host->vports, peers) { | |
2336 | if ((vport->channel == 0) && | |
2337 | (vport->port_name == wwpn) && (vport->node_name == wwnn)) { | |
0d9dc7c8 GR |
2338 | if (vport->flags & (FC_VPORT_DEL | FC_VPORT_CREATING)) |
2339 | break; | |
2340 | vport->flags |= FC_VPORT_DELETING; | |
a53eb5e0 JS |
2341 | match = 1; |
2342 | break; | |
2343 | } | |
2344 | } | |
2345 | spin_unlock_irqrestore(shost->host_lock, flags); | |
2346 | ||
2347 | if (!match) | |
2348 | return -ENODEV; | |
2349 | ||
2350 | stat = fc_vport_terminate(vport); | |
2351 | return stat ? stat : count; | |
2352 | } | |
ee959b00 | 2353 | static FC_DEVICE_ATTR(host, vport_delete, S_IWUSR, NULL, |
a53eb5e0 JS |
2354 | store_fc_host_vport_delete); |
2355 | ||
2356 | ||
1da177e4 LT |
2357 | static int fc_host_match(struct attribute_container *cont, |
2358 | struct device *dev) | |
2359 | { | |
2360 | struct Scsi_Host *shost; | |
2361 | struct fc_internal *i; | |
2362 | ||
2363 | if (!scsi_is_host_device(dev)) | |
2364 | return 0; | |
2365 | ||
2366 | shost = dev_to_shost(dev); | |
2367 | if (!shost->transportt || shost->transportt->host_attrs.ac.class | |
2368 | != &fc_host_class.class) | |
2369 | return 0; | |
2370 | ||
2371 | i = to_fc_internal(shost->transportt); | |
2372 | ||
2373 | return &i->t.host_attrs.ac == cont; | |
2374 | } | |
2375 | ||
2376 | static int fc_target_match(struct attribute_container *cont, | |
2377 | struct device *dev) | |
2378 | { | |
2379 | struct Scsi_Host *shost; | |
2380 | struct fc_internal *i; | |
2381 | ||
2382 | if (!scsi_is_target_device(dev)) | |
2383 | return 0; | |
2384 | ||
2385 | shost = dev_to_shost(dev->parent); | |
2386 | if (!shost->transportt || shost->transportt->host_attrs.ac.class | |
2387 | != &fc_host_class.class) | |
2388 | return 0; | |
2389 | ||
2390 | i = to_fc_internal(shost->transportt); | |
2391 | ||
2392 | return &i->t.target_attrs.ac == cont; | |
2393 | } | |
2394 | ||
2395 | static void fc_rport_dev_release(struct device *dev) | |
2396 | { | |
2397 | struct fc_rport *rport = dev_to_rport(dev); | |
2398 | put_device(dev->parent); | |
2399 | kfree(rport); | |
2400 | } | |
2401 | ||
2402 | int scsi_is_fc_rport(const struct device *dev) | |
2403 | { | |
2404 | return dev->release == fc_rport_dev_release; | |
2405 | } | |
2406 | EXPORT_SYMBOL(scsi_is_fc_rport); | |
2407 | ||
2408 | static int fc_rport_match(struct attribute_container *cont, | |
2409 | struct device *dev) | |
2410 | { | |
2411 | struct Scsi_Host *shost; | |
2412 | struct fc_internal *i; | |
2413 | ||
2414 | if (!scsi_is_fc_rport(dev)) | |
2415 | return 0; | |
2416 | ||
2417 | shost = dev_to_shost(dev->parent); | |
2418 | if (!shost->transportt || shost->transportt->host_attrs.ac.class | |
2419 | != &fc_host_class.class) | |
2420 | return 0; | |
2421 | ||
2422 | i = to_fc_internal(shost->transportt); | |
2423 | ||
2424 | return &i->rport_attr_cont.ac == cont; | |
2425 | } | |
2426 | ||
5c44cd2a | 2427 | |
a53eb5e0 JS |
2428 | static void fc_vport_dev_release(struct device *dev) |
2429 | { | |
2430 | struct fc_vport *vport = dev_to_vport(dev); | |
2431 | put_device(dev->parent); /* release kobj parent */ | |
2432 | kfree(vport); | |
2433 | } | |
2434 | ||
62055172 | 2435 | static int scsi_is_fc_vport(const struct device *dev) |
a53eb5e0 JS |
2436 | { |
2437 | return dev->release == fc_vport_dev_release; | |
2438 | } | |
a53eb5e0 JS |
2439 | |
2440 | static int fc_vport_match(struct attribute_container *cont, | |
2441 | struct device *dev) | |
2442 | { | |
2443 | struct fc_vport *vport; | |
2444 | struct Scsi_Host *shost; | |
2445 | struct fc_internal *i; | |
2446 | ||
2447 | if (!scsi_is_fc_vport(dev)) | |
2448 | return 0; | |
2449 | vport = dev_to_vport(dev); | |
2450 | ||
2451 | shost = vport_to_shost(vport); | |
2452 | if (!shost->transportt || shost->transportt->host_attrs.ac.class | |
2453 | != &fc_host_class.class) | |
2454 | return 0; | |
2455 | ||
2456 | i = to_fc_internal(shost->transportt); | |
2457 | return &i->vport_attr_cont.ac == cont; | |
2458 | } | |
2459 | ||
2460 | ||
c829c394 | 2461 | /** |
b6a05c82 | 2462 | * fc_eh_timed_out - FC Transport I/O timeout intercept handler |
c829c394 JS |
2463 | * @scmd: The SCSI command which timed out |
2464 | * | |
2465 | * This routine protects against error handlers getting invoked while a | |
2466 | * rport is in a blocked state, typically due to a temporarily loss of | |
2467 | * connectivity. If the error handlers are allowed to proceed, requests | |
2468 | * to abort i/o, reset the target, etc will likely fail as there is no way | |
2469 | * to communicate with the device to perform the requested function. These | |
2470 | * failures may result in the midlayer taking the device offline, requiring | |
2471 | * manual intervention to restore operation. | |
2472 | * | |
2473 | * This routine, called whenever an i/o times out, validates the state of | |
2474 | * the underlying rport. If the rport is blocked, it returns | |
2475 | * EH_RESET_TIMER, which will continue to reschedule the timeout. | |
2476 | * Eventually, either the device will return, or devloss_tmo will fire, | |
2477 | * and when the timeout then fires, it will be handled normally. | |
2478 | * If the rport is not blocked, normal error handling continues. | |
2479 | * | |
2480 | * Notes: | |
2481 | * This routine assumes no locks are held on entry. | |
eb44820c | 2482 | */ |
b6a05c82 CH |
2483 | enum blk_eh_timer_return |
2484 | fc_eh_timed_out(struct scsi_cmnd *scmd) | |
c829c394 JS |
2485 | { |
2486 | struct fc_rport *rport = starget_to_rport(scsi_target(scmd->device)); | |
2487 | ||
2488 | if (rport->port_state == FC_PORTSTATE_BLOCKED) | |
242f9dcb | 2489 | return BLK_EH_RESET_TIMER; |
c829c394 | 2490 | |
6600593c | 2491 | return BLK_EH_DONE; |
c829c394 | 2492 | } |
b6a05c82 | 2493 | EXPORT_SYMBOL(fc_eh_timed_out); |
c829c394 | 2494 | |
5c44cd2a | 2495 | /* |
bda23253 JS |
2496 | * Called by fc_user_scan to locate an rport on the shost that |
2497 | * matches the channel and target id, and invoke scsi_scan_target() | |
2498 | * on the rport. | |
5c44cd2a | 2499 | */ |
bda23253 | 2500 | static void |
9cb78c16 | 2501 | fc_user_scan_tgt(struct Scsi_Host *shost, uint channel, uint id, u64 lun) |
5c44cd2a JSEC |
2502 | { |
2503 | struct fc_rport *rport; | |
bda23253 JS |
2504 | unsigned long flags; |
2505 | ||
2506 | spin_lock_irqsave(shost->host_lock, flags); | |
5c44cd2a | 2507 | |
e02f3f59 CH |
2508 | list_for_each_entry(rport, &fc_host_rports(shost), peers) { |
2509 | if (rport->scsi_target_id == -1) | |
2510 | continue; | |
5c44cd2a | 2511 | |
0d2fcd9f HR |
2512 | if (rport->port_state != FC_PORTSTATE_ONLINE) |
2513 | continue; | |
2514 | ||
bda23253 JS |
2515 | if ((channel == rport->channel) && |
2516 | (id == rport->scsi_target_id)) { | |
2517 | spin_unlock_irqrestore(shost->host_lock, flags); | |
1d645088 HR |
2518 | scsi_scan_target(&rport->dev, channel, id, lun, |
2519 | SCSI_SCAN_MANUAL); | |
bda23253 | 2520 | return; |
e02f3f59 CH |
2521 | } |
2522 | } | |
2523 | ||
bda23253 JS |
2524 | spin_unlock_irqrestore(shost->host_lock, flags); |
2525 | } | |
2526 | ||
2527 | /* | |
2528 | * Called via sysfs scan routines. Necessary, as the FC transport | |
2529 | * wants to place all target objects below the rport object. So this | |
2530 | * routine must invoke the scsi_scan_target() routine with the rport | |
2531 | * object as the parent. | |
2532 | */ | |
2533 | static int | |
9cb78c16 | 2534 | fc_user_scan(struct Scsi_Host *shost, uint channel, uint id, u64 lun) |
bda23253 JS |
2535 | { |
2536 | uint chlo, chhi; | |
2537 | uint tgtlo, tgthi; | |
2538 | ||
2539 | if (((channel != SCAN_WILD_CARD) && (channel > shost->max_channel)) || | |
2540 | ((id != SCAN_WILD_CARD) && (id >= shost->max_id)) || | |
2541 | ((lun != SCAN_WILD_CARD) && (lun > shost->max_lun))) | |
2542 | return -EINVAL; | |
2543 | ||
2544 | if (channel == SCAN_WILD_CARD) { | |
2545 | chlo = 0; | |
2546 | chhi = shost->max_channel + 1; | |
2547 | } else { | |
2548 | chlo = channel; | |
2549 | chhi = channel + 1; | |
2550 | } | |
2551 | ||
2552 | if (id == SCAN_WILD_CARD) { | |
2553 | tgtlo = 0; | |
2554 | tgthi = shost->max_id; | |
2555 | } else { | |
2556 | tgtlo = id; | |
2557 | tgthi = id + 1; | |
2558 | } | |
2559 | ||
2560 | for ( ; chlo < chhi; chlo++) | |
2561 | for ( ; tgtlo < tgthi; tgtlo++) | |
2562 | fc_user_scan_tgt(shost, chlo, tgtlo, lun); | |
2563 | ||
e02f3f59 | 2564 | return 0; |
5c44cd2a JSEC |
2565 | } |
2566 | ||
1da177e4 LT |
2567 | struct scsi_transport_template * |
2568 | fc_attach_transport(struct fc_function_template *ft) | |
2569 | { | |
1da177e4 | 2570 | int count; |
24669f75 JS |
2571 | struct fc_internal *i = kzalloc(sizeof(struct fc_internal), |
2572 | GFP_KERNEL); | |
1da177e4 LT |
2573 | |
2574 | if (unlikely(!i)) | |
2575 | return NULL; | |
2576 | ||
1da177e4 LT |
2577 | i->t.target_attrs.ac.attrs = &i->starget_attrs[0]; |
2578 | i->t.target_attrs.ac.class = &fc_transport_class.class; | |
2579 | i->t.target_attrs.ac.match = fc_target_match; | |
2580 | i->t.target_size = sizeof(struct fc_starget_attrs); | |
2581 | transport_container_register(&i->t.target_attrs); | |
2582 | ||
2583 | i->t.host_attrs.ac.attrs = &i->host_attrs[0]; | |
2584 | i->t.host_attrs.ac.class = &fc_host_class.class; | |
2585 | i->t.host_attrs.ac.match = fc_host_match; | |
2586 | i->t.host_size = sizeof(struct fc_host_attrs); | |
2587 | if (ft->get_fc_host_stats) | |
2588 | i->t.host_attrs.statistics = &fc_statistics_group; | |
2589 | transport_container_register(&i->t.host_attrs); | |
2590 | ||
2591 | i->rport_attr_cont.ac.attrs = &i->rport_attrs[0]; | |
2592 | i->rport_attr_cont.ac.class = &fc_rport_class.class; | |
2593 | i->rport_attr_cont.ac.match = fc_rport_match; | |
547aab51 | 2594 | i->rport_attr_cont.statistics = &fc_rport_statistics_group; |
1da177e4 LT |
2595 | transport_container_register(&i->rport_attr_cont); |
2596 | ||
a53eb5e0 JS |
2597 | i->vport_attr_cont.ac.attrs = &i->vport_attrs[0]; |
2598 | i->vport_attr_cont.ac.class = &fc_vport_class.class; | |
2599 | i->vport_attr_cont.ac.match = fc_vport_match; | |
2600 | transport_container_register(&i->vport_attr_cont); | |
2601 | ||
1da177e4 LT |
2602 | i->f = ft; |
2603 | ||
2604 | /* Transport uses the shost workq for scsi scanning */ | |
2605 | i->t.create_work_queue = 1; | |
5c44cd2a | 2606 | |
e02f3f59 | 2607 | i->t.user_scan = fc_user_scan; |
9ef3e4a4 | 2608 | |
1da177e4 LT |
2609 | /* |
2610 | * Setup SCSI Target Attributes. | |
2611 | */ | |
2612 | count = 0; | |
2613 | SETUP_STARGET_ATTRIBUTE_RD(node_name); | |
2614 | SETUP_STARGET_ATTRIBUTE_RD(port_name); | |
2615 | SETUP_STARGET_ATTRIBUTE_RD(port_id); | |
2616 | ||
2617 | BUG_ON(count > FC_STARGET_NUM_ATTRS); | |
2618 | ||
2619 | i->starget_attrs[count] = NULL; | |
2620 | ||
2621 | ||
2622 | /* | |
2623 | * Setup SCSI Host Attributes. | |
2624 | */ | |
2625 | count=0; | |
2626 | SETUP_HOST_ATTRIBUTE_RD(node_name); | |
2627 | SETUP_HOST_ATTRIBUTE_RD(port_name); | |
6b7281d0 | 2628 | SETUP_HOST_ATTRIBUTE_RD(permanent_port_name); |
1da177e4 LT |
2629 | SETUP_HOST_ATTRIBUTE_RD(supported_classes); |
2630 | SETUP_HOST_ATTRIBUTE_RD(supported_fc4s); | |
1da177e4 LT |
2631 | SETUP_HOST_ATTRIBUTE_RD(supported_speeds); |
2632 | SETUP_HOST_ATTRIBUTE_RD(maxframe_size); | |
a53eb5e0 JS |
2633 | if (ft->vport_create) { |
2634 | SETUP_HOST_ATTRIBUTE_RD_NS(max_npiv_vports); | |
2635 | SETUP_HOST_ATTRIBUTE_RD_NS(npiv_vports_inuse); | |
2636 | } | |
1da177e4 | 2637 | SETUP_HOST_ATTRIBUTE_RD(serial_number); |
bb8ef587 NP |
2638 | SETUP_HOST_ATTRIBUTE_RD(manufacturer); |
2639 | SETUP_HOST_ATTRIBUTE_RD(model); | |
2640 | SETUP_HOST_ATTRIBUTE_RD(model_description); | |
2641 | SETUP_HOST_ATTRIBUTE_RD(hardware_version); | |
2642 | SETUP_HOST_ATTRIBUTE_RD(driver_version); | |
2643 | SETUP_HOST_ATTRIBUTE_RD(firmware_version); | |
2644 | SETUP_HOST_ATTRIBUTE_RD(optionrom_version); | |
1da177e4 LT |
2645 | |
2646 | SETUP_HOST_ATTRIBUTE_RD(port_id); | |
2647 | SETUP_HOST_ATTRIBUTE_RD(port_type); | |
2648 | SETUP_HOST_ATTRIBUTE_RD(port_state); | |
2649 | SETUP_HOST_ATTRIBUTE_RD(active_fc4s); | |
2650 | SETUP_HOST_ATTRIBUTE_RD(speed); | |
2651 | SETUP_HOST_ATTRIBUTE_RD(fabric_name); | |
016131b8 | 2652 | SETUP_HOST_ATTRIBUTE_RD(symbolic_name); |
b8d08210 | 2653 | SETUP_HOST_ATTRIBUTE_RW(system_hostname); |
1da177e4 LT |
2654 | |
2655 | /* Transport-managed attributes */ | |
43ca910a | 2656 | SETUP_PRIVATE_HOST_ATTRIBUTE_RW(dev_loss_tmo); |
1da177e4 | 2657 | SETUP_PRIVATE_HOST_ATTRIBUTE_RW(tgtid_bind_type); |
91ca7b01 AV |
2658 | if (ft->issue_fc_host_lip) |
2659 | SETUP_PRIVATE_HOST_ATTRIBUTE_RW(issue_lip); | |
a53eb5e0 JS |
2660 | if (ft->vport_create) |
2661 | SETUP_PRIVATE_HOST_ATTRIBUTE_RW(vport_create); | |
2662 | if (ft->vport_delete) | |
2663 | SETUP_PRIVATE_HOST_ATTRIBUTE_RW(vport_delete); | |
1da177e4 LT |
2664 | |
2665 | BUG_ON(count > FC_HOST_NUM_ATTRS); | |
2666 | ||
2667 | i->host_attrs[count] = NULL; | |
2668 | ||
2669 | /* | |
2670 | * Setup Remote Port Attributes. | |
2671 | */ | |
2672 | count=0; | |
2673 | SETUP_RPORT_ATTRIBUTE_RD(maxframe_size); | |
2674 | SETUP_RPORT_ATTRIBUTE_RD(supported_classes); | |
2675 | SETUP_RPORT_ATTRIBUTE_RW(dev_loss_tmo); | |
2676 | SETUP_PRIVATE_RPORT_ATTRIBUTE_RD(node_name); | |
2677 | SETUP_PRIVATE_RPORT_ATTRIBUTE_RD(port_name); | |
2678 | SETUP_PRIVATE_RPORT_ATTRIBUTE_RD(port_id); | |
2679 | SETUP_PRIVATE_RPORT_ATTRIBUTE_RD(roles); | |
2680 | SETUP_PRIVATE_RPORT_ATTRIBUTE_RD(port_state); | |
2681 | SETUP_PRIVATE_RPORT_ATTRIBUTE_RD(scsi_target_id); | |
fff9d40c | 2682 | SETUP_PRIVATE_RPORT_ATTRIBUTE_RW(fast_io_fail_tmo); |
1da177e4 LT |
2683 | |
2684 | BUG_ON(count > FC_RPORT_NUM_ATTRS); | |
2685 | ||
2686 | i->rport_attrs[count] = NULL; | |
2687 | ||
a53eb5e0 JS |
2688 | /* |
2689 | * Setup Virtual Port Attributes. | |
2690 | */ | |
2691 | count=0; | |
2692 | SETUP_PRIVATE_VPORT_ATTRIBUTE_RD(vport_state); | |
2693 | SETUP_PRIVATE_VPORT_ATTRIBUTE_RD(vport_last_state); | |
2694 | SETUP_PRIVATE_VPORT_ATTRIBUTE_RD(node_name); | |
2695 | SETUP_PRIVATE_VPORT_ATTRIBUTE_RD(port_name); | |
2696 | SETUP_PRIVATE_VPORT_ATTRIBUTE_RD(roles); | |
2697 | SETUP_PRIVATE_VPORT_ATTRIBUTE_RD(vport_type); | |
2698 | SETUP_VPORT_ATTRIBUTE_RW(symbolic_name); | |
2699 | SETUP_VPORT_ATTRIBUTE_WR(vport_delete); | |
2700 | SETUP_VPORT_ATTRIBUTE_WR(vport_disable); | |
2701 | ||
2702 | BUG_ON(count > FC_VPORT_NUM_ATTRS); | |
2703 | ||
2704 | i->vport_attrs[count] = NULL; | |
2705 | ||
1da177e4 LT |
2706 | return &i->t; |
2707 | } | |
2708 | EXPORT_SYMBOL(fc_attach_transport); | |
2709 | ||
2710 | void fc_release_transport(struct scsi_transport_template *t) | |
2711 | { | |
2712 | struct fc_internal *i = to_fc_internal(t); | |
2713 | ||
2714 | transport_container_unregister(&i->t.target_attrs); | |
2715 | transport_container_unregister(&i->t.host_attrs); | |
2716 | transport_container_unregister(&i->rport_attr_cont); | |
a53eb5e0 | 2717 | transport_container_unregister(&i->vport_attr_cont); |
1da177e4 LT |
2718 | |
2719 | kfree(i); | |
2720 | } | |
2721 | EXPORT_SYMBOL(fc_release_transport); | |
2722 | ||
aedf3497 JS |
2723 | /** |
2724 | * fc_queue_work - Queue work to the fc_host workqueue. | |
2725 | * @shost: Pointer to Scsi_Host bound to fc_host. | |
2726 | * @work: Work to queue for execution. | |
2727 | * | |
2728 | * Return value: | |
a0785edf JS |
2729 | * 1 - work queued for execution |
2730 | * 0 - work is already queued | |
2731 | * -EINVAL - work queue doesn't exist | |
eb44820c | 2732 | */ |
aedf3497 JS |
2733 | static int |
2734 | fc_queue_work(struct Scsi_Host *shost, struct work_struct *work) | |
2735 | { | |
2736 | if (unlikely(!fc_host_work_q(shost))) { | |
2737 | printk(KERN_ERR | |
2738 | "ERROR: FC host '%s' attempted to queue work, " | |
2739 | "when no workqueue created.\n", shost->hostt->name); | |
2740 | dump_stack(); | |
2741 | ||
2742 | return -EINVAL; | |
2743 | } | |
2744 | ||
2745 | return queue_work(fc_host_work_q(shost), work); | |
2746 | } | |
2747 | ||
2748 | /** | |
2749 | * fc_flush_work - Flush a fc_host's workqueue. | |
2750 | * @shost: Pointer to Scsi_Host bound to fc_host. | |
eb44820c | 2751 | */ |
aedf3497 JS |
2752 | static void |
2753 | fc_flush_work(struct Scsi_Host *shost) | |
2754 | { | |
2755 | if (!fc_host_work_q(shost)) { | |
2756 | printk(KERN_ERR | |
2757 | "ERROR: FC host '%s' attempted to flush work, " | |
2758 | "when no workqueue created.\n", shost->hostt->name); | |
2759 | dump_stack(); | |
2760 | return; | |
2761 | } | |
2762 | ||
2763 | flush_workqueue(fc_host_work_q(shost)); | |
2764 | } | |
2765 | ||
2766 | /** | |
2767 | * fc_queue_devloss_work - Schedule work for the fc_host devloss workqueue. | |
2768 | * @shost: Pointer to Scsi_Host bound to fc_host. | |
2769 | * @work: Work to queue for execution. | |
2770 | * @delay: jiffies to delay the work queuing | |
2771 | * | |
2772 | * Return value: | |
0f29b966 | 2773 | * 1 on success / 0 already queued / < 0 for error |
eb44820c | 2774 | */ |
aedf3497 | 2775 | static int |
c4028958 | 2776 | fc_queue_devloss_work(struct Scsi_Host *shost, struct delayed_work *work, |
aedf3497 JS |
2777 | unsigned long delay) |
2778 | { | |
2779 | if (unlikely(!fc_host_devloss_work_q(shost))) { | |
2780 | printk(KERN_ERR | |
2781 | "ERROR: FC host '%s' attempted to queue work, " | |
2782 | "when no workqueue created.\n", shost->hostt->name); | |
2783 | dump_stack(); | |
2784 | ||
2785 | return -EINVAL; | |
2786 | } | |
2787 | ||
2788 | return queue_delayed_work(fc_host_devloss_work_q(shost), work, delay); | |
2789 | } | |
2790 | ||
2791 | /** | |
2792 | * fc_flush_devloss - Flush a fc_host's devloss workqueue. | |
2793 | * @shost: Pointer to Scsi_Host bound to fc_host. | |
eb44820c | 2794 | */ |
aedf3497 JS |
2795 | static void |
2796 | fc_flush_devloss(struct Scsi_Host *shost) | |
2797 | { | |
2798 | if (!fc_host_devloss_work_q(shost)) { | |
2799 | printk(KERN_ERR | |
2800 | "ERROR: FC host '%s' attempted to flush work, " | |
2801 | "when no workqueue created.\n", shost->hostt->name); | |
2802 | dump_stack(); | |
2803 | return; | |
2804 | } | |
2805 | ||
2806 | flush_workqueue(fc_host_devloss_work_q(shost)); | |
2807 | } | |
2808 | ||
1da177e4 LT |
2809 | |
2810 | /** | |
eb44820c RL |
2811 | * fc_remove_host - called to terminate any fc_transport-related elements for a scsi host. |
2812 | * @shost: Which &Scsi_Host | |
1da177e4 | 2813 | * |
25985edc | 2814 | * This routine is expected to be called immediately preceding the |
1da177e4 LT |
2815 | * a driver's call to scsi_remove_host(). |
2816 | * | |
2817 | * WARNING: A driver utilizing the fc_transport, which fails to call | |
eb44820c | 2818 | * this routine prior to scsi_remove_host(), will leave dangling |
1da177e4 LT |
2819 | * objects in /sys/class/fc_remote_ports. Access to any of these |
2820 | * objects can result in a system crash !!! | |
2821 | * | |
2822 | * Notes: | |
2823 | * This routine assumes no locks are held on entry. | |
eb44820c | 2824 | */ |
1da177e4 LT |
2825 | void |
2826 | fc_remove_host(struct Scsi_Host *shost) | |
2827 | { | |
a53eb5e0 JS |
2828 | struct fc_vport *vport = NULL, *next_vport = NULL; |
2829 | struct fc_rport *rport = NULL, *next_rport = NULL; | |
aedf3497 JS |
2830 | struct workqueue_struct *work_q; |
2831 | struct fc_host_attrs *fc_host = shost_to_fc_host(shost); | |
a53eb5e0 | 2832 | unsigned long flags; |
a53eb5e0 JS |
2833 | |
2834 | spin_lock_irqsave(shost->host_lock, flags); | |
2835 | ||
2836 | /* Remove any vports */ | |
260f4aed HR |
2837 | list_for_each_entry_safe(vport, next_vport, &fc_host->vports, peers) { |
2838 | vport->flags |= FC_VPORT_DELETING; | |
9ef3e4a4 | 2839 | fc_queue_work(shost, &vport->vport_delete_work); |
260f4aed | 2840 | } |
1da177e4 LT |
2841 | |
2842 | /* Remove any remote ports */ | |
2843 | list_for_each_entry_safe(rport, next_rport, | |
aedf3497 JS |
2844 | &fc_host->rports, peers) { |
2845 | list_del(&rport->peers); | |
2846 | rport->port_state = FC_PORTSTATE_DELETED; | |
2847 | fc_queue_work(shost, &rport->rport_delete_work); | |
2848 | } | |
2849 | ||
1da177e4 | 2850 | list_for_each_entry_safe(rport, next_rport, |
aedf3497 JS |
2851 | &fc_host->rport_bindings, peers) { |
2852 | list_del(&rport->peers); | |
2853 | rport->port_state = FC_PORTSTATE_DELETED; | |
2854 | fc_queue_work(shost, &rport->rport_delete_work); | |
2855 | } | |
2856 | ||
a53eb5e0 JS |
2857 | spin_unlock_irqrestore(shost->host_lock, flags); |
2858 | ||
aedf3497 JS |
2859 | /* flush all scan work items */ |
2860 | scsi_flush_work(shost); | |
2861 | ||
2862 | /* flush all stgt delete, and rport delete work items, then kill it */ | |
2863 | if (fc_host->work_q) { | |
2864 | work_q = fc_host->work_q; | |
2865 | fc_host->work_q = NULL; | |
2866 | destroy_workqueue(work_q); | |
2867 | } | |
2868 | ||
2869 | /* flush all devloss work items, then kill it */ | |
2870 | if (fc_host->devloss_work_q) { | |
2871 | work_q = fc_host->devloss_work_q; | |
2872 | fc_host->devloss_work_q = NULL; | |
2873 | destroy_workqueue(work_q); | |
2874 | } | |
1da177e4 LT |
2875 | } |
2876 | EXPORT_SYMBOL(fc_remove_host); | |
2877 | ||
fff9d40c MC |
2878 | static void fc_terminate_rport_io(struct fc_rport *rport) |
2879 | { | |
2880 | struct Scsi_Host *shost = rport_to_shost(rport); | |
2881 | struct fc_internal *i = to_fc_internal(shost->transportt); | |
2882 | ||
2883 | /* Involve the LLDD if possible to terminate all io on the rport. */ | |
2884 | if (i->f->terminate_rport_io) | |
2885 | i->f->terminate_rport_io(rport); | |
2886 | ||
2887 | /* | |
5d9fb5cc | 2888 | * Must unblock to flush queued IO. scsi-ml will fail incoming reqs. |
fff9d40c | 2889 | */ |
5d9fb5cc | 2890 | scsi_target_unblock(&rport->dev, SDEV_TRANSPORT_OFFLINE); |
fff9d40c | 2891 | } |
aedf3497 JS |
2892 | |
2893 | /** | |
25985edc | 2894 | * fc_starget_delete - called to delete the scsi descendants of an rport |
c4028958 | 2895 | * @work: remote port to be operated on. |
eb44820c RL |
2896 | * |
2897 | * Deletes target and all sdevs. | |
2898 | */ | |
19a7b4ae | 2899 | static void |
c4028958 | 2900 | fc_starget_delete(struct work_struct *work) |
19a7b4ae | 2901 | { |
c4028958 DH |
2902 | struct fc_rport *rport = |
2903 | container_of(work, struct fc_rport, stgt_delete_work); | |
19a7b4ae | 2904 | |
fff9d40c | 2905 | fc_terminate_rport_io(rport); |
19a7b4ae JSEC |
2906 | scsi_remove_target(&rport->dev); |
2907 | } | |
2908 | ||
aedf3497 JS |
2909 | |
2910 | /** | |
2911 | * fc_rport_final_delete - finish rport termination and delete it. | |
c4028958 | 2912 | * @work: remote port to be deleted. |
eb44820c | 2913 | */ |
aedf3497 | 2914 | static void |
c4028958 | 2915 | fc_rport_final_delete(struct work_struct *work) |
aedf3497 | 2916 | { |
c4028958 DH |
2917 | struct fc_rport *rport = |
2918 | container_of(work, struct fc_rport, rport_delete_work); | |
aedf3497 JS |
2919 | struct device *dev = &rport->dev; |
2920 | struct Scsi_Host *shost = rport_to_shost(rport); | |
0f29b966 | 2921 | struct fc_internal *i = to_fc_internal(shost->transportt); |
92740b24 | 2922 | unsigned long flags; |
8798a694 | 2923 | int do_callback = 0; |
aedf3497 | 2924 | |
112f661d NNS |
2925 | fc_terminate_rport_io(rport); |
2926 | ||
aedf3497 | 2927 | /* |
9ef3e4a4 | 2928 | * if a scan is pending, flush the SCSI Host work_q so that |
aedf3497 JS |
2929 | * that we can reclaim the rport scan work element. |
2930 | */ | |
2931 | if (rport->flags & FC_RPORT_SCAN_PENDING) | |
2932 | scsi_flush_work(shost); | |
2933 | ||
92740b24 JS |
2934 | /* |
2935 | * Cancel any outstanding timers. These should really exist | |
2936 | * only when rmmod'ing the LLDD and we're asking for | |
2937 | * immediate termination of the rports | |
2938 | */ | |
2939 | spin_lock_irqsave(shost->host_lock, flags); | |
2940 | if (rport->flags & FC_RPORT_DEVLOSS_PENDING) { | |
2941 | spin_unlock_irqrestore(shost->host_lock, flags); | |
2942 | if (!cancel_delayed_work(&rport->fail_io_work)) | |
2943 | fc_flush_devloss(shost); | |
2944 | if (!cancel_delayed_work(&rport->dev_loss_work)) | |
2945 | fc_flush_devloss(shost); | |
0353e085 | 2946 | cancel_work_sync(&rport->scan_work); |
92740b24 JS |
2947 | spin_lock_irqsave(shost->host_lock, flags); |
2948 | rport->flags &= ~FC_RPORT_DEVLOSS_PENDING; | |
2949 | } | |
2950 | spin_unlock_irqrestore(shost->host_lock, flags); | |
2951 | ||
0f29b966 JS |
2952 | /* Delete SCSI target and sdevs */ |
2953 | if (rport->scsi_target_id != -1) | |
c4028958 | 2954 | fc_starget_delete(&rport->stgt_delete_work); |
92740b24 JS |
2955 | |
2956 | /* | |
2957 | * Notify the driver that the rport is now dead. The LLDD will | |
2958 | * also guarantee that any communication to the rport is terminated | |
4be98c0c JS |
2959 | * |
2960 | * Avoid this call if we already called it when we preserved the | |
2961 | * rport for the binding. | |
92740b24 | 2962 | */ |
8798a694 | 2963 | spin_lock_irqsave(shost->host_lock, flags); |
4be98c0c | 2964 | if (!(rport->flags & FC_RPORT_DEVLOSS_CALLBK_DONE) && |
8798a694 MR |
2965 | (i->f->dev_loss_tmo_callbk)) { |
2966 | rport->flags |= FC_RPORT_DEVLOSS_CALLBK_DONE; | |
2967 | do_callback = 1; | |
2968 | } | |
2969 | spin_unlock_irqrestore(shost->host_lock, flags); | |
2970 | ||
2971 | if (do_callback) | |
0f29b966 | 2972 | i->f->dev_loss_tmo_callbk(rport); |
0f29b966 | 2973 | |
9e4f5e29 JS |
2974 | fc_bsg_remove(rport->rqst_q); |
2975 | ||
aedf3497 JS |
2976 | transport_remove_device(dev); |
2977 | device_del(dev); | |
2978 | transport_destroy_device(dev); | |
4cd38e38 | 2979 | scsi_host_put(shost); /* for fc_host->rport list */ |
3bdad7bd | 2980 | put_device(dev); /* for self-reference */ |
aedf3497 JS |
2981 | } |
2982 | ||
2983 | ||
1da177e4 | 2984 | /** |
558b88fe | 2985 | * fc_remote_port_create - allocates and creates a remote FC port. |
1da177e4 LT |
2986 | * @shost: scsi host the remote port is connected to. |
2987 | * @channel: Channel on shost port connected to. | |
2988 | * @ids: The world wide names, fc address, and FC4 port | |
2989 | * roles for the remote port. | |
2990 | * | |
2991 | * Allocates and creates the remoter port structure, including the | |
2992 | * class and sysfs creation. | |
2993 | * | |
2994 | * Notes: | |
2995 | * This routine assumes no locks are held on entry. | |
eb44820c | 2996 | */ |
44818efb | 2997 | static struct fc_rport * |
558b88fe HR |
2998 | fc_remote_port_create(struct Scsi_Host *shost, int channel, |
2999 | struct fc_rport_identifiers *ids) | |
1da177e4 | 3000 | { |
aedf3497 | 3001 | struct fc_host_attrs *fc_host = shost_to_fc_host(shost); |
1da177e4 LT |
3002 | struct fc_internal *fci = to_fc_internal(shost->transportt); |
3003 | struct fc_rport *rport; | |
3004 | struct device *dev; | |
3005 | unsigned long flags; | |
3006 | int error; | |
3007 | size_t size; | |
3008 | ||
3009 | size = (sizeof(struct fc_rport) + fci->f->dd_fcrport_size); | |
24669f75 | 3010 | rport = kzalloc(size, GFP_KERNEL); |
1da177e4 | 3011 | if (unlikely(!rport)) { |
cadbd4a5 | 3012 | printk(KERN_ERR "%s: allocation failure\n", __func__); |
1da177e4 LT |
3013 | return NULL; |
3014 | } | |
1da177e4 LT |
3015 | |
3016 | rport->maxframe_size = -1; | |
3017 | rport->supported_classes = FC_COS_UNSPECIFIED; | |
43ca910a | 3018 | rport->dev_loss_tmo = fc_host->dev_loss_tmo; |
1da177e4 LT |
3019 | memcpy(&rport->node_name, &ids->node_name, sizeof(rport->node_name)); |
3020 | memcpy(&rport->port_name, &ids->port_name, sizeof(rport->port_name)); | |
3021 | rport->port_id = ids->port_id; | |
3022 | rport->roles = ids->roles; | |
3023 | rport->port_state = FC_PORTSTATE_ONLINE; | |
3024 | if (fci->f->dd_fcrport_size) | |
3025 | rport->dd_data = &rport[1]; | |
3026 | rport->channel = channel; | |
0f29b966 | 3027 | rport->fast_io_fail_tmo = -1; |
1da177e4 | 3028 | |
c4028958 DH |
3029 | INIT_DELAYED_WORK(&rport->dev_loss_work, fc_timeout_deleted_rport); |
3030 | INIT_DELAYED_WORK(&rport->fail_io_work, fc_timeout_fail_rport_io); | |
3031 | INIT_WORK(&rport->scan_work, fc_scsi_scan_rport); | |
3032 | INIT_WORK(&rport->stgt_delete_work, fc_starget_delete); | |
3033 | INIT_WORK(&rport->rport_delete_work, fc_rport_final_delete); | |
1da177e4 LT |
3034 | |
3035 | spin_lock_irqsave(shost->host_lock, flags); | |
3036 | ||
3037 | rport->number = fc_host->next_rport_number++; | |
0c3ae266 CA |
3038 | if ((rport->roles & FC_PORT_ROLE_FCP_TARGET) || |
3039 | (rport->roles & FC_PORT_ROLE_FCP_DUMMY_INITIATOR)) | |
1da177e4 LT |
3040 | rport->scsi_target_id = fc_host->next_target_id++; |
3041 | else | |
3042 | rport->scsi_target_id = -1; | |
aedf3497 | 3043 | list_add_tail(&rport->peers, &fc_host->rports); |
4cd38e38 | 3044 | scsi_host_get(shost); /* for fc_host->rport list */ |
1da177e4 LT |
3045 | |
3046 | spin_unlock_irqrestore(shost->host_lock, flags); | |
3047 | ||
3048 | dev = &rport->dev; | |
3bdad7bd JS |
3049 | device_initialize(dev); /* takes self reference */ |
3050 | dev->parent = get_device(&shost->shost_gendev); /* parent reference */ | |
1da177e4 | 3051 | dev->release = fc_rport_dev_release; |
71610f55 KS |
3052 | dev_set_name(dev, "rport-%d:%d-%d", |
3053 | shost->host_no, channel, rport->number); | |
1da177e4 LT |
3054 | transport_setup_device(dev); |
3055 | ||
3056 | error = device_add(dev); | |
3057 | if (error) { | |
3058 | printk(KERN_ERR "FC Remote Port device_add failed\n"); | |
3059 | goto delete_rport; | |
3060 | } | |
3061 | transport_add_device(dev); | |
3062 | transport_configure_device(dev); | |
3063 | ||
9e4f5e29 JS |
3064 | fc_bsg_rportadd(shost, rport); |
3065 | /* ignore any bsg add error - we just can't do sgio */ | |
3066 | ||
a53eb5e0 | 3067 | if (rport->roles & FC_PORT_ROLE_FCP_TARGET) { |
1da177e4 | 3068 | /* initiate a scan of the target */ |
aedf3497 | 3069 | rport->flags |= FC_RPORT_SCAN_PENDING; |
1da177e4 | 3070 | scsi_queue_work(shost, &rport->scan_work); |
aedf3497 | 3071 | } |
1da177e4 LT |
3072 | |
3073 | return rport; | |
3074 | ||
3075 | delete_rport: | |
3076 | transport_destroy_device(dev); | |
1da177e4 LT |
3077 | spin_lock_irqsave(shost->host_lock, flags); |
3078 | list_del(&rport->peers); | |
4cd38e38 | 3079 | scsi_host_put(shost); /* for fc_host->rport list */ |
1da177e4 LT |
3080 | spin_unlock_irqrestore(shost->host_lock, flags); |
3081 | put_device(dev->parent); | |
3082 | kfree(rport); | |
3083 | return NULL; | |
3084 | } | |
3085 | ||
3086 | /** | |
eb44820c | 3087 | * fc_remote_port_add - notify fc transport of the existence of a remote FC port. |
1da177e4 LT |
3088 | * @shost: scsi host the remote port is connected to. |
3089 | * @channel: Channel on shost port connected to. | |
3090 | * @ids: The world wide names, fc address, and FC4 port | |
3091 | * roles for the remote port. | |
3092 | * | |
3093 | * The LLDD calls this routine to notify the transport of the existence | |
3094 | * of a remote port. The LLDD provides the unique identifiers (wwpn,wwn) | |
3095 | * of the port, it's FC address (port_id), and the FC4 roles that are | |
3096 | * active for the port. | |
3097 | * | |
3098 | * For ports that are FCP targets (aka scsi targets), the FC transport | |
3099 | * maintains consistent target id bindings on behalf of the LLDD. | |
3100 | * A consistent target id binding is an assignment of a target id to | |
3101 | * a remote port identifier, which persists while the scsi host is | |
3102 | * attached. The remote port can disappear, then later reappear, and | |
3103 | * it's target id assignment remains the same. This allows for shifts | |
3104 | * in FC addressing (if binding by wwpn or wwnn) with no apparent | |
3105 | * changes to the scsi subsystem which is based on scsi host number and | |
3106 | * target id values. Bindings are only valid during the attachment of | |
3107 | * the scsi host. If the host detaches, then later re-attaches, target | |
3108 | * id bindings may change. | |
3109 | * | |
3110 | * This routine is responsible for returning a remote port structure. | |
3111 | * The routine will search the list of remote ports it maintains | |
3112 | * internally on behalf of consistent target id mappings. If found, the | |
3113 | * remote port structure will be reused. Otherwise, a new remote port | |
3114 | * structure will be allocated. | |
3115 | * | |
3116 | * Whenever a remote port is allocated, a new fc_remote_port class | |
3117 | * device is created. | |
3118 | * | |
3119 | * Should not be called from interrupt context. | |
3120 | * | |
3121 | * Notes: | |
3122 | * This routine assumes no locks are held on entry. | |
eb44820c | 3123 | */ |
1da177e4 LT |
3124 | struct fc_rport * |
3125 | fc_remote_port_add(struct Scsi_Host *shost, int channel, | |
3126 | struct fc_rport_identifiers *ids) | |
3127 | { | |
19a7b4ae | 3128 | struct fc_internal *fci = to_fc_internal(shost->transportt); |
aedf3497 | 3129 | struct fc_host_attrs *fc_host = shost_to_fc_host(shost); |
1da177e4 LT |
3130 | struct fc_rport *rport; |
3131 | unsigned long flags; | |
3132 | int match = 0; | |
3133 | ||
aedf3497 JS |
3134 | /* ensure any stgt delete functions are done */ |
3135 | fc_flush_work(shost); | |
3136 | ||
19a7b4ae JSEC |
3137 | /* |
3138 | * Search the list of "active" rports, for an rport that has been | |
3139 | * deleted, but we've held off the real delete while the target | |
3140 | * is in a "blocked" state. | |
3141 | */ | |
3142 | spin_lock_irqsave(shost->host_lock, flags); | |
3143 | ||
aedf3497 | 3144 | list_for_each_entry(rport, &fc_host->rports, peers) { |
19a7b4ae | 3145 | |
f091fb8c HR |
3146 | if ((rport->port_state == FC_PORTSTATE_BLOCKED || |
3147 | rport->port_state == FC_PORTSTATE_NOTPRESENT) && | |
19a7b4ae JSEC |
3148 | (rport->channel == channel)) { |
3149 | ||
aedf3497 | 3150 | switch (fc_host->tgtid_bind_type) { |
19a7b4ae JSEC |
3151 | case FC_TGTID_BIND_BY_WWPN: |
3152 | case FC_TGTID_BIND_NONE: | |
3153 | if (rport->port_name == ids->port_name) | |
3154 | match = 1; | |
3155 | break; | |
3156 | case FC_TGTID_BIND_BY_WWNN: | |
3157 | if (rport->node_name == ids->node_name) | |
3158 | match = 1; | |
3159 | break; | |
3160 | case FC_TGTID_BIND_BY_ID: | |
3161 | if (rport->port_id == ids->port_id) | |
3162 | match = 1; | |
3163 | break; | |
3164 | } | |
3165 | ||
3166 | if (match) { | |
19a7b4ae JSEC |
3167 | |
3168 | memcpy(&rport->node_name, &ids->node_name, | |
3169 | sizeof(rport->node_name)); | |
3170 | memcpy(&rport->port_name, &ids->port_name, | |
3171 | sizeof(rport->port_name)); | |
3172 | rport->port_id = ids->port_id; | |
3173 | ||
3174 | rport->port_state = FC_PORTSTATE_ONLINE; | |
3175 | rport->roles = ids->roles; | |
3176 | ||
3177 | spin_unlock_irqrestore(shost->host_lock, flags); | |
3178 | ||
3179 | if (fci->f->dd_fcrport_size) | |
3180 | memset(rport->dd_data, 0, | |
3181 | fci->f->dd_fcrport_size); | |
3182 | ||
3183 | /* | |
92740b24 JS |
3184 | * If we were not a target, cancel the |
3185 | * io terminate and rport timers, and | |
3186 | * we're done. | |
3187 | * | |
3188 | * If we were a target, but our new role | |
3189 | * doesn't indicate a target, leave the | |
3190 | * timers running expecting the role to | |
3191 | * change as the target fully logs in. If | |
3192 | * it doesn't, the target will be torn down. | |
3193 | * | |
3194 | * If we were a target, and our role shows | |
3195 | * we're still a target, cancel the timers | |
3196 | * and kick off a scan. | |
19a7b4ae | 3197 | */ |
19a7b4ae | 3198 | |
92740b24 JS |
3199 | /* was a target, not in roles */ |
3200 | if ((rport->scsi_target_id != -1) && | |
a53eb5e0 | 3201 | (!(ids->roles & FC_PORT_ROLE_FCP_TARGET))) |
92740b24 | 3202 | return rport; |
19a7b4ae JSEC |
3203 | |
3204 | /* | |
92740b24 JS |
3205 | * Stop the fail io and dev_loss timers. |
3206 | * If they flush, the port_state will | |
3207 | * be checked and will NOOP the function. | |
19a7b4ae | 3208 | */ |
0f29b966 JS |
3209 | if (!cancel_delayed_work(&rport->fail_io_work)) |
3210 | fc_flush_devloss(shost); | |
92740b24 | 3211 | if (!cancel_delayed_work(&rport->dev_loss_work)) |
aedf3497 JS |
3212 | fc_flush_devloss(shost); |
3213 | ||
3214 | spin_lock_irqsave(shost->host_lock, flags); | |
3215 | ||
fff9d40c | 3216 | rport->flags &= ~(FC_RPORT_FAST_FAIL_TIMEDOUT | |
4be98c0c JS |
3217 | FC_RPORT_DEVLOSS_PENDING | |
3218 | FC_RPORT_DEVLOSS_CALLBK_DONE); | |
19a7b4ae | 3219 | |
8fb2ef89 MC |
3220 | spin_unlock_irqrestore(shost->host_lock, flags); |
3221 | ||
92740b24 JS |
3222 | /* if target, initiate a scan */ |
3223 | if (rport->scsi_target_id != -1) { | |
5d9fb5cc MC |
3224 | scsi_target_unblock(&rport->dev, |
3225 | SDEV_RUNNING); | |
8fb2ef89 MC |
3226 | spin_lock_irqsave(shost->host_lock, |
3227 | flags); | |
92740b24 JS |
3228 | rport->flags |= FC_RPORT_SCAN_PENDING; |
3229 | scsi_queue_work(shost, | |
3230 | &rport->scan_work); | |
3231 | spin_unlock_irqrestore(shost->host_lock, | |
3232 | flags); | |
8fb2ef89 | 3233 | } |
a0785edf | 3234 | |
9e4f5e29 JS |
3235 | fc_bsg_goose_queue(rport); |
3236 | ||
19a7b4ae JSEC |
3237 | return rport; |
3238 | } | |
3239 | } | |
3240 | } | |
3241 | ||
92740b24 JS |
3242 | /* |
3243 | * Search the bindings array | |
3244 | * Note: if never a FCP target, you won't be on this list | |
3245 | */ | |
aedf3497 | 3246 | if (fc_host->tgtid_bind_type != FC_TGTID_BIND_NONE) { |
1da177e4 LT |
3247 | |
3248 | /* search for a matching consistent binding */ | |
3249 | ||
aedf3497 | 3250 | list_for_each_entry(rport, &fc_host->rport_bindings, |
1da177e4 LT |
3251 | peers) { |
3252 | if (rport->channel != channel) | |
3253 | continue; | |
3254 | ||
aedf3497 | 3255 | switch (fc_host->tgtid_bind_type) { |
1da177e4 LT |
3256 | case FC_TGTID_BIND_BY_WWPN: |
3257 | if (rport->port_name == ids->port_name) | |
3258 | match = 1; | |
3259 | break; | |
3260 | case FC_TGTID_BIND_BY_WWNN: | |
3261 | if (rport->node_name == ids->node_name) | |
3262 | match = 1; | |
3263 | break; | |
3264 | case FC_TGTID_BIND_BY_ID: | |
3265 | if (rport->port_id == ids->port_id) | |
3266 | match = 1; | |
3267 | break; | |
3268 | case FC_TGTID_BIND_NONE: /* to keep compiler happy */ | |
3269 | break; | |
3270 | } | |
3271 | ||
3272 | if (match) { | |
aedf3497 | 3273 | list_move_tail(&rport->peers, &fc_host->rports); |
1da177e4 LT |
3274 | break; |
3275 | } | |
3276 | } | |
3277 | ||
1da177e4 LT |
3278 | if (match) { |
3279 | memcpy(&rport->node_name, &ids->node_name, | |
3280 | sizeof(rport->node_name)); | |
3281 | memcpy(&rport->port_name, &ids->port_name, | |
3282 | sizeof(rport->port_name)); | |
3283 | rport->port_id = ids->port_id; | |
1da177e4 | 3284 | rport->port_state = FC_PORTSTATE_ONLINE; |
fff9d40c | 3285 | rport->flags &= ~FC_RPORT_FAST_FAIL_TIMEDOUT; |
1da177e4 | 3286 | |
19a7b4ae JSEC |
3287 | if (fci->f->dd_fcrport_size) |
3288 | memset(rport->dd_data, 0, | |
3289 | fci->f->dd_fcrport_size); | |
8fb2ef89 MC |
3290 | spin_unlock_irqrestore(shost->host_lock, flags); |
3291 | ||
675195d0 | 3292 | fc_remote_port_rolechg(rport, ids->roles); |
1da177e4 LT |
3293 | return rport; |
3294 | } | |
3295 | } | |
3296 | ||
19a7b4ae JSEC |
3297 | spin_unlock_irqrestore(shost->host_lock, flags); |
3298 | ||
1da177e4 | 3299 | /* No consistent binding found - create new remote port entry */ |
558b88fe | 3300 | rport = fc_remote_port_create(shost, channel, ids); |
1da177e4 LT |
3301 | |
3302 | return rport; | |
3303 | } | |
3304 | EXPORT_SYMBOL(fc_remote_port_add); | |
3305 | ||
1da177e4 LT |
3306 | |
3307 | /** | |
eb44820c | 3308 | * fc_remote_port_delete - notifies the fc transport that a remote port is no longer in existence. |
1da177e4 LT |
3309 | * @rport: The remote port that no longer exists |
3310 | * | |
3311 | * The LLDD calls this routine to notify the transport that a remote | |
3312 | * port is no longer part of the topology. Note: Although a port | |
3313 | * may no longer be part of the topology, it may persist in the remote | |
19a7b4ae | 3314 | * ports displayed by the fc_host. We do this under 2 conditions: |
739aca06 | 3315 | * |
eb44820c | 3316 | * 1) If the port was a scsi target, we delay its deletion by "blocking" it. |
739aca06 MCC |
3317 | * This allows the port to temporarily disappear, then reappear without |
3318 | * disrupting the SCSI device tree attached to it. During the "blocked" | |
3319 | * period the port will still exist. | |
3320 | * | |
eb44820c | 3321 | * 2) If the port was a scsi target and disappears for longer than we |
739aca06 MCC |
3322 | * expect, we'll delete the port and the tear down the SCSI device tree |
3323 | * attached to it. However, we want to semi-persist the target id assigned | |
3324 | * to that port if it eventually does exist. The port structure will | |
3325 | * remain (although with minimal information) so that the target id | |
90311148 | 3326 | * bindings also remain. |
1da177e4 LT |
3327 | * |
3328 | * If the remote port is not an FCP Target, it will be fully torn down | |
3329 | * and deallocated, including the fc_remote_port class device. | |
3330 | * | |
19a7b4ae JSEC |
3331 | * If the remote port is an FCP Target, the port will be placed in a |
3332 | * temporary blocked state. From the LLDD's perspective, the rport no | |
3333 | * longer exists. From the SCSI midlayer's perspective, the SCSI target | |
3334 | * exists, but all sdevs on it are blocked from further I/O. The following | |
eb44820c RL |
3335 | * is then expected. |
3336 | * | |
19a7b4ae JSEC |
3337 | * If the remote port does not return (signaled by a LLDD call to |
3338 | * fc_remote_port_add()) within the dev_loss_tmo timeout, then the | |
3339 | * scsi target is removed - killing all outstanding i/o and removing the | |
134699d2 | 3340 | * scsi devices attached to it. The port structure will be marked Not |
19a7b4ae JSEC |
3341 | * Present and be partially cleared, leaving only enough information to |
3342 | * recognize the remote port relative to the scsi target id binding if | |
3343 | * it later appears. The port will remain as long as there is a valid | |
3344 | * binding (e.g. until the user changes the binding type or unloads the | |
3345 | * scsi host with the binding). | |
1da177e4 | 3346 | * |
19a7b4ae JSEC |
3347 | * If the remote port returns within the dev_loss_tmo value (and matches |
3348 | * according to the target id binding type), the port structure will be | |
3349 | * reused. If it is no longer a SCSI target, the target will be torn | |
3350 | * down. If it continues to be a SCSI target, then the target will be | |
3351 | * unblocked (allowing i/o to be resumed), and a scan will be activated | |
3352 | * to ensure that all luns are detected. | |
3353 | * | |
3354 | * Called from normal process context only - cannot be called from interrupt. | |
1da177e4 LT |
3355 | * |
3356 | * Notes: | |
3357 | * This routine assumes no locks are held on entry. | |
eb44820c | 3358 | */ |
1da177e4 LT |
3359 | void |
3360 | fc_remote_port_delete(struct fc_rport *rport) | |
3361 | { | |
aedf3497 | 3362 | struct Scsi_Host *shost = rport_to_shost(rport); |
36dd288f | 3363 | unsigned long timeout = rport->dev_loss_tmo; |
aedf3497 JS |
3364 | unsigned long flags; |
3365 | ||
3366 | /* | |
3367 | * No need to flush the fc_host work_q's, as all adds are synchronous. | |
3368 | * | |
3369 | * We do need to reclaim the rport scan work element, so eventually | |
3370 | * (in fc_rport_final_delete()) we'll flush the scsi host work_q if | |
3371 | * there's still a scan pending. | |
3372 | */ | |
3373 | ||
3374 | spin_lock_irqsave(shost->host_lock, flags); | |
1da177e4 | 3375 | |
92740b24 | 3376 | if (rport->port_state != FC_PORTSTATE_ONLINE) { |
aedf3497 | 3377 | spin_unlock_irqrestore(shost->host_lock, flags); |
1da177e4 LT |
3378 | return; |
3379 | } | |
3380 | ||
92740b24 JS |
3381 | /* |
3382 | * In the past, we if this was not an FCP-Target, we would | |
3383 | * unconditionally just jump to deleting the rport. | |
3384 | * However, rports can be used as node containers by the LLDD, | |
3385 | * and its not appropriate to just terminate the rport at the | |
3386 | * first sign of a loss in connectivity. The LLDD may want to | |
3387 | * send ELS traffic to re-validate the login. If the rport is | |
3388 | * immediately deleted, it makes it inappropriate for a node | |
3389 | * container. | |
3390 | * So... we now unconditionally wait dev_loss_tmo before | |
3391 | * destroying an rport. | |
3392 | */ | |
3393 | ||
aedf3497 JS |
3394 | rport->port_state = FC_PORTSTATE_BLOCKED; |
3395 | ||
3396 | rport->flags |= FC_RPORT_DEVLOSS_PENDING; | |
3397 | ||
3398 | spin_unlock_irqrestore(shost->host_lock, flags); | |
3399 | ||
19a7b4ae | 3400 | scsi_target_block(&rport->dev); |
1da177e4 | 3401 | |
0f29b966 JS |
3402 | /* see if we need to kill io faster than waiting for device loss */ |
3403 | if ((rport->fast_io_fail_tmo != -1) && | |
fff9d40c | 3404 | (rport->fast_io_fail_tmo < timeout)) |
0f29b966 JS |
3405 | fc_queue_devloss_work(shost, &rport->fail_io_work, |
3406 | rport->fast_io_fail_tmo * HZ); | |
3407 | ||
19a7b4ae | 3408 | /* cap the length the devices can be blocked until they are deleted */ |
aedf3497 | 3409 | fc_queue_devloss_work(shost, &rport->dev_loss_work, timeout * HZ); |
1da177e4 LT |
3410 | } |
3411 | EXPORT_SYMBOL(fc_remote_port_delete); | |
3412 | ||
3413 | /** | |
eb44820c | 3414 | * fc_remote_port_rolechg - notifies the fc transport that the roles on a remote may have changed. |
1da177e4 | 3415 | * @rport: The remote port that changed. |
eb44820c | 3416 | * @roles: New roles for this port. |
1da177e4 | 3417 | * |
eb44820c RL |
3418 | * Description: The LLDD calls this routine to notify the transport that the |
3419 | * roles on a remote port may have changed. The largest effect of this is | |
1da177e4 LT |
3420 | * if a port now becomes a FCP Target, it must be allocated a |
3421 | * scsi target id. If the port is no longer a FCP target, any | |
3422 | * scsi target id value assigned to it will persist in case the | |
3423 | * role changes back to include FCP Target. No changes in the scsi | |
3424 | * midlayer will be invoked if the role changes (in the expectation | |
3425 | * that the role will be resumed. If it doesn't normal error processing | |
3426 | * will take place). | |
3427 | * | |
3428 | * Should not be called from interrupt context. | |
3429 | * | |
3430 | * Notes: | |
3431 | * This routine assumes no locks are held on entry. | |
eb44820c | 3432 | */ |
1da177e4 LT |
3433 | void |
3434 | fc_remote_port_rolechg(struct fc_rport *rport, u32 roles) | |
3435 | { | |
3436 | struct Scsi_Host *shost = rport_to_shost(rport); | |
aedf3497 | 3437 | struct fc_host_attrs *fc_host = shost_to_fc_host(shost); |
1da177e4 LT |
3438 | unsigned long flags; |
3439 | int create = 0; | |
3440 | ||
1da177e4 | 3441 | spin_lock_irqsave(shost->host_lock, flags); |
a53eb5e0 | 3442 | if (roles & FC_PORT_ROLE_FCP_TARGET) { |
19a7b4ae JSEC |
3443 | if (rport->scsi_target_id == -1) { |
3444 | rport->scsi_target_id = fc_host->next_target_id++; | |
3445 | create = 1; | |
a53eb5e0 | 3446 | } else if (!(rport->roles & FC_PORT_ROLE_FCP_TARGET)) |
19a7b4ae | 3447 | create = 1; |
1da177e4 | 3448 | } |
1da177e4 | 3449 | |
19a7b4ae JSEC |
3450 | rport->roles = roles; |
3451 | ||
aedf3497 JS |
3452 | spin_unlock_irqrestore(shost->host_lock, flags); |
3453 | ||
19a7b4ae JSEC |
3454 | if (create) { |
3455 | /* | |
3456 | * There may have been a delete timer running on the | |
3457 | * port. Ensure that it is cancelled as we now know | |
3458 | * the port is an FCP Target. | |
134699d2 | 3459 | * Note: we know the rport exists and is in an online |
19a7b4ae JSEC |
3460 | * state as the LLDD would not have had an rport |
3461 | * reference to pass us. | |
3462 | * | |
3463 | * Take no action on the del_timer failure as the state | |
3464 | * machine state change will validate the | |
3465 | * transaction. | |
3466 | */ | |
0f29b966 JS |
3467 | if (!cancel_delayed_work(&rport->fail_io_work)) |
3468 | fc_flush_devloss(shost); | |
19a7b4ae | 3469 | if (!cancel_delayed_work(&rport->dev_loss_work)) |
aedf3497 JS |
3470 | fc_flush_devloss(shost); |
3471 | ||
3472 | spin_lock_irqsave(shost->host_lock, flags); | |
fff9d40c | 3473 | rport->flags &= ~(FC_RPORT_FAST_FAIL_TIMEDOUT | |
0eecee41 JS |
3474 | FC_RPORT_DEVLOSS_PENDING | |
3475 | FC_RPORT_DEVLOSS_CALLBK_DONE); | |
aedf3497 JS |
3476 | spin_unlock_irqrestore(shost->host_lock, flags); |
3477 | ||
3478 | /* ensure any stgt delete functions are done */ | |
3479 | fc_flush_work(shost); | |
19a7b4ae | 3480 | |
5d9fb5cc | 3481 | scsi_target_unblock(&rport->dev, SDEV_RUNNING); |
1da177e4 | 3482 | /* initiate a scan of the target */ |
aedf3497 JS |
3483 | spin_lock_irqsave(shost->host_lock, flags); |
3484 | rport->flags |= FC_RPORT_SCAN_PENDING; | |
1da177e4 | 3485 | scsi_queue_work(shost, &rport->scan_work); |
aedf3497 | 3486 | spin_unlock_irqrestore(shost->host_lock, flags); |
19a7b4ae | 3487 | } |
1da177e4 LT |
3488 | } |
3489 | EXPORT_SYMBOL(fc_remote_port_rolechg); | |
3490 | ||
3491 | /** | |
eb44820c | 3492 | * fc_timeout_deleted_rport - Timeout handler for a deleted remote port. |
92740b24 | 3493 | * @work: rport target that failed to reappear in the allotted time. |
eb44820c RL |
3494 | * |
3495 | * Description: An attempt to delete a remote port blocks, and if it fails | |
3496 | * to return in the allotted time this gets called. | |
3497 | */ | |
1da177e4 | 3498 | static void |
c4028958 | 3499 | fc_timeout_deleted_rport(struct work_struct *work) |
1da177e4 | 3500 | { |
c4028958 DH |
3501 | struct fc_rport *rport = |
3502 | container_of(work, struct fc_rport, dev_loss_work.work); | |
19a7b4ae | 3503 | struct Scsi_Host *shost = rport_to_shost(rport); |
4be98c0c | 3504 | struct fc_internal *i = to_fc_internal(shost->transportt); |
aedf3497 | 3505 | struct fc_host_attrs *fc_host = shost_to_fc_host(shost); |
19a7b4ae | 3506 | unsigned long flags; |
8798a694 | 3507 | int do_callback = 0; |
1da177e4 | 3508 | |
19a7b4ae | 3509 | spin_lock_irqsave(shost->host_lock, flags); |
1da177e4 | 3510 | |
aedf3497 JS |
3511 | rport->flags &= ~FC_RPORT_DEVLOSS_PENDING; |
3512 | ||
1da177e4 | 3513 | /* |
92740b24 JS |
3514 | * If the port is ONLINE, then it came back. If it was a SCSI |
3515 | * target, validate it still is. If not, tear down the | |
3516 | * scsi_target on it. | |
1da177e4 | 3517 | */ |
aedf3497 | 3518 | if ((rport->port_state == FC_PORTSTATE_ONLINE) && |
92740b24 | 3519 | (rport->scsi_target_id != -1) && |
a53eb5e0 | 3520 | !(rport->roles & FC_PORT_ROLE_FCP_TARGET)) { |
19a7b4ae | 3521 | dev_printk(KERN_ERR, &rport->dev, |
aedf3497 JS |
3522 | "blocked FC remote port time out: no longer" |
3523 | " a FCP target, removing starget\n"); | |
aedf3497 | 3524 | spin_unlock_irqrestore(shost->host_lock, flags); |
5d9fb5cc | 3525 | scsi_target_unblock(&rport->dev, SDEV_TRANSPORT_OFFLINE); |
a0785edf | 3526 | fc_queue_work(shost, &rport->stgt_delete_work); |
19a7b4ae JSEC |
3527 | return; |
3528 | } | |
1da177e4 | 3529 | |
92740b24 | 3530 | /* NOOP state - we're flushing workq's */ |
19a7b4ae JSEC |
3531 | if (rport->port_state != FC_PORTSTATE_BLOCKED) { |
3532 | spin_unlock_irqrestore(shost->host_lock, flags); | |
3533 | dev_printk(KERN_ERR, &rport->dev, | |
92740b24 JS |
3534 | "blocked FC remote port time out: leaving" |
3535 | " rport%s alone\n", | |
3536 | (rport->scsi_target_id != -1) ? " and starget" : ""); | |
19a7b4ae JSEC |
3537 | return; |
3538 | } | |
1da177e4 | 3539 | |
92740b24 JS |
3540 | if ((fc_host->tgtid_bind_type == FC_TGTID_BIND_NONE) || |
3541 | (rport->scsi_target_id == -1)) { | |
aedf3497 JS |
3542 | list_del(&rport->peers); |
3543 | rport->port_state = FC_PORTSTATE_DELETED; | |
19a7b4ae | 3544 | dev_printk(KERN_ERR, &rport->dev, |
92740b24 JS |
3545 | "blocked FC remote port time out: removing" |
3546 | " rport%s\n", | |
3547 | (rport->scsi_target_id != -1) ? " and starget" : ""); | |
aedf3497 JS |
3548 | fc_queue_work(shost, &rport->rport_delete_work); |
3549 | spin_unlock_irqrestore(shost->host_lock, flags); | |
19a7b4ae JSEC |
3550 | return; |
3551 | } | |
1da177e4 | 3552 | |
19a7b4ae JSEC |
3553 | dev_printk(KERN_ERR, &rport->dev, |
3554 | "blocked FC remote port time out: removing target and " | |
3555 | "saving binding\n"); | |
3556 | ||
aedf3497 | 3557 | list_move_tail(&rport->peers, &fc_host->rport_bindings); |
1da177e4 LT |
3558 | |
3559 | /* | |
19a7b4ae JSEC |
3560 | * Note: We do not remove or clear the hostdata area. This allows |
3561 | * host-specific target data to persist along with the | |
3562 | * scsi_target_id. It's up to the host to manage it's hostdata area. | |
1da177e4 | 3563 | */ |
1da177e4 | 3564 | |
19a7b4ae JSEC |
3565 | /* |
3566 | * Reinitialize port attributes that may change if the port comes back. | |
3567 | */ | |
3568 | rport->maxframe_size = -1; | |
3569 | rport->supported_classes = FC_COS_UNSPECIFIED; | |
a53eb5e0 | 3570 | rport->roles = FC_PORT_ROLE_UNKNOWN; |
aedf3497 | 3571 | rport->port_state = FC_PORTSTATE_NOTPRESENT; |
fff9d40c | 3572 | rport->flags &= ~FC_RPORT_FAST_FAIL_TIMEDOUT; |
1da177e4 | 3573 | |
f78badb1 JS |
3574 | /* |
3575 | * Pre-emptively kill I/O rather than waiting for the work queue | |
3576 | * item to teardown the starget. (FCOE libFC folks prefer this | |
3577 | * and to have the rport_port_id still set when it's done). | |
3578 | */ | |
3579 | spin_unlock_irqrestore(shost->host_lock, flags); | |
3580 | fc_terminate_rport_io(rport); | |
3581 | ||
8798a694 MR |
3582 | spin_lock_irqsave(shost->host_lock, flags); |
3583 | ||
3584 | if (rport->port_state == FC_PORTSTATE_NOTPRESENT) { /* still missing */ | |
f78badb1 | 3585 | |
8798a694 MR |
3586 | /* remove the identifiers that aren't used in the consisting binding */ |
3587 | switch (fc_host->tgtid_bind_type) { | |
3588 | case FC_TGTID_BIND_BY_WWPN: | |
3589 | rport->node_name = -1; | |
3590 | rport->port_id = -1; | |
3591 | break; | |
3592 | case FC_TGTID_BIND_BY_WWNN: | |
3593 | rport->port_name = -1; | |
3594 | rport->port_id = -1; | |
3595 | break; | |
3596 | case FC_TGTID_BIND_BY_ID: | |
3597 | rport->node_name = -1; | |
3598 | rport->port_name = -1; | |
3599 | break; | |
3600 | case FC_TGTID_BIND_NONE: /* to keep compiler happy */ | |
3601 | break; | |
3602 | } | |
3603 | ||
3604 | /* | |
3605 | * As this only occurs if the remote port (scsi target) | |
3606 | * went away and didn't come back - we'll remove | |
3607 | * all attached scsi devices. | |
3608 | */ | |
3609 | rport->flags |= FC_RPORT_DEVLOSS_CALLBK_DONE; | |
3610 | fc_queue_work(shost, &rport->stgt_delete_work); | |
3611 | ||
3612 | do_callback = 1; | |
19a7b4ae JSEC |
3613 | } |
3614 | ||
8798a694 | 3615 | spin_unlock_irqrestore(shost->host_lock, flags); |
4be98c0c JS |
3616 | |
3617 | /* | |
3618 | * Notify the driver that the rport is now dead. The LLDD will | |
3619 | * also guarantee that any communication to the rport is terminated | |
3620 | * | |
3621 | * Note: we set the CALLBK_DONE flag above to correspond | |
3622 | */ | |
8798a694 | 3623 | if (do_callback && i->f->dev_loss_tmo_callbk) |
4be98c0c | 3624 | i->f->dev_loss_tmo_callbk(rport); |
1da177e4 | 3625 | } |
1da177e4 | 3626 | |
4be98c0c | 3627 | |
0f29b966 | 3628 | /** |
eb44820c | 3629 | * fc_timeout_fail_rport_io - Timeout handler for a fast io failing on a disconnected SCSI target. |
c4028958 | 3630 | * @work: rport to terminate io on. |
0f29b966 JS |
3631 | * |
3632 | * Notes: Only requests the failure of the io, not that all are flushed | |
3633 | * prior to returning. | |
eb44820c | 3634 | */ |
0f29b966 | 3635 | static void |
c4028958 | 3636 | fc_timeout_fail_rport_io(struct work_struct *work) |
0f29b966 | 3637 | { |
c4028958 DH |
3638 | struct fc_rport *rport = |
3639 | container_of(work, struct fc_rport, fail_io_work.work); | |
0f29b966 JS |
3640 | |
3641 | if (rport->port_state != FC_PORTSTATE_BLOCKED) | |
3642 | return; | |
3643 | ||
fff9d40c MC |
3644 | rport->flags |= FC_RPORT_FAST_FAIL_TIMEDOUT; |
3645 | fc_terminate_rport_io(rport); | |
0f29b966 JS |
3646 | } |
3647 | ||
1da177e4 LT |
3648 | /** |
3649 | * fc_scsi_scan_rport - called to perform a scsi scan on a remote port. | |
c4028958 | 3650 | * @work: remote port to be scanned. |
eb44820c | 3651 | */ |
1da177e4 | 3652 | static void |
c4028958 | 3653 | fc_scsi_scan_rport(struct work_struct *work) |
1da177e4 | 3654 | { |
c4028958 DH |
3655 | struct fc_rport *rport = |
3656 | container_of(work, struct fc_rport, scan_work); | |
aedf3497 | 3657 | struct Scsi_Host *shost = rport_to_shost(rport); |
03f002f7 | 3658 | struct fc_internal *i = to_fc_internal(shost->transportt); |
42e33148 JSEC |
3659 | unsigned long flags; |
3660 | ||
aedf3497 | 3661 | if ((rport->port_state == FC_PORTSTATE_ONLINE) && |
03f002f7 CS |
3662 | (rport->roles & FC_PORT_ROLE_FCP_TARGET) && |
3663 | !(i->f->disable_target_scan)) { | |
aedf3497 | 3664 | scsi_scan_target(&rport->dev, rport->channel, |
1d645088 HR |
3665 | rport->scsi_target_id, SCAN_WILD_CARD, |
3666 | SCSI_SCAN_RESCAN); | |
42e33148 | 3667 | } |
aedf3497 JS |
3668 | |
3669 | spin_lock_irqsave(shost->host_lock, flags); | |
3670 | rport->flags &= ~FC_RPORT_SCAN_PENDING; | |
42e33148 JSEC |
3671 | spin_unlock_irqrestore(shost->host_lock, flags); |
3672 | } | |
3673 | ||
65d430fa | 3674 | /** |
67b46525 SM |
3675 | * fc_block_rport() - Block SCSI eh thread for blocked fc_rport. |
3676 | * @rport: Remote port that scsi_eh is trying to recover. | |
65d430fa CS |
3677 | * |
3678 | * This routine can be called from a FC LLD scsi_eh callback. It | |
3679 | * blocks the scsi_eh thread until the fc_rport leaves the | |
2f2eb587 CS |
3680 | * FC_PORTSTATE_BLOCKED, or the fast_io_fail_tmo fires. This is |
3681 | * necessary to avoid the scsi_eh failing recovery actions for blocked | |
3682 | * rports which would lead to offlined SCSI devices. | |
3683 | * | |
3684 | * Returns: 0 if the fc_rport left the state FC_PORTSTATE_BLOCKED. | |
3685 | * FAST_IO_FAIL if the fast_io_fail_tmo fired, this should be | |
3686 | * passed back to scsi_eh. | |
65d430fa | 3687 | */ |
67b46525 | 3688 | int fc_block_rport(struct fc_rport *rport) |
65d430fa | 3689 | { |
67b46525 | 3690 | struct Scsi_Host *shost = rport_to_shost(rport); |
65d430fa CS |
3691 | unsigned long flags; |
3692 | ||
3693 | spin_lock_irqsave(shost->host_lock, flags); | |
2f2eb587 CS |
3694 | while (rport->port_state == FC_PORTSTATE_BLOCKED && |
3695 | !(rport->flags & FC_RPORT_FAST_FAIL_TIMEDOUT)) { | |
65d430fa CS |
3696 | spin_unlock_irqrestore(shost->host_lock, flags); |
3697 | msleep(1000); | |
3698 | spin_lock_irqsave(shost->host_lock, flags); | |
3699 | } | |
3700 | spin_unlock_irqrestore(shost->host_lock, flags); | |
2f2eb587 CS |
3701 | |
3702 | if (rport->flags & FC_RPORT_FAST_FAIL_TIMEDOUT) | |
3703 | return FAST_IO_FAIL; | |
3704 | ||
3705 | return 0; | |
65d430fa | 3706 | } |
67b46525 SM |
3707 | EXPORT_SYMBOL(fc_block_rport); |
3708 | ||
3709 | /** | |
3710 | * fc_block_scsi_eh - Block SCSI eh thread for blocked fc_rport | |
3711 | * @cmnd: SCSI command that scsi_eh is trying to recover | |
3712 | * | |
3713 | * This routine can be called from a FC LLD scsi_eh callback. It | |
3714 | * blocks the scsi_eh thread until the fc_rport leaves the | |
3715 | * FC_PORTSTATE_BLOCKED, or the fast_io_fail_tmo fires. This is | |
3716 | * necessary to avoid the scsi_eh failing recovery actions for blocked | |
3717 | * rports which would lead to offlined SCSI devices. | |
3718 | * | |
3719 | * Returns: 0 if the fc_rport left the state FC_PORTSTATE_BLOCKED. | |
3720 | * FAST_IO_FAIL if the fast_io_fail_tmo fired, this should be | |
3721 | * passed back to scsi_eh. | |
3722 | */ | |
3723 | int fc_block_scsi_eh(struct scsi_cmnd *cmnd) | |
3724 | { | |
3725 | struct fc_rport *rport = starget_to_rport(scsi_target(cmnd->device)); | |
3726 | ||
8d30371f JT |
3727 | if (WARN_ON_ONCE(!rport)) |
3728 | return FAST_IO_FAIL; | |
3729 | ||
67b46525 SM |
3730 | return fc_block_rport(rport); |
3731 | } | |
65d430fa | 3732 | EXPORT_SYMBOL(fc_block_scsi_eh); |
42e33148 | 3733 | |
a53eb5e0 | 3734 | /** |
a30c3f69 | 3735 | * fc_vport_setup - allocates and creates a FC virtual port. |
a53eb5e0 JS |
3736 | * @shost: scsi host the virtual port is connected to. |
3737 | * @channel: Channel on shost port connected to. | |
3738 | * @pdev: parent device for vport | |
3739 | * @ids: The world wide names, FC4 port roles, etc for | |
3740 | * the virtual port. | |
3741 | * @ret_vport: The pointer to the created vport. | |
3742 | * | |
3743 | * Allocates and creates the vport structure, calls the parent host | |
134699d2 | 3744 | * to instantiate the vport, this completes w/ class and sysfs creation. |
a53eb5e0 JS |
3745 | * |
3746 | * Notes: | |
3747 | * This routine assumes no locks are held on entry. | |
eb44820c | 3748 | */ |
a53eb5e0 | 3749 | static int |
a30c3f69 | 3750 | fc_vport_setup(struct Scsi_Host *shost, int channel, struct device *pdev, |
a53eb5e0 JS |
3751 | struct fc_vport_identifiers *ids, struct fc_vport **ret_vport) |
3752 | { | |
3753 | struct fc_host_attrs *fc_host = shost_to_fc_host(shost); | |
3754 | struct fc_internal *fci = to_fc_internal(shost->transportt); | |
3755 | struct fc_vport *vport; | |
3756 | struct device *dev; | |
3757 | unsigned long flags; | |
3758 | size_t size; | |
3759 | int error; | |
3760 | ||
3761 | *ret_vport = NULL; | |
3762 | ||
3763 | if ( ! fci->f->vport_create) | |
3764 | return -ENOENT; | |
3765 | ||
3766 | size = (sizeof(struct fc_vport) + fci->f->dd_fcvport_size); | |
3767 | vport = kzalloc(size, GFP_KERNEL); | |
3768 | if (unlikely(!vport)) { | |
cadbd4a5 | 3769 | printk(KERN_ERR "%s: allocation failure\n", __func__); |
a53eb5e0 JS |
3770 | return -ENOMEM; |
3771 | } | |
3772 | ||
3773 | vport->vport_state = FC_VPORT_UNKNOWN; | |
3774 | vport->vport_last_state = FC_VPORT_UNKNOWN; | |
3775 | vport->node_name = ids->node_name; | |
3776 | vport->port_name = ids->port_name; | |
3777 | vport->roles = ids->roles; | |
3778 | vport->vport_type = ids->vport_type; | |
3779 | if (fci->f->dd_fcvport_size) | |
3780 | vport->dd_data = &vport[1]; | |
3781 | vport->shost = shost; | |
3782 | vport->channel = channel; | |
3783 | vport->flags = FC_VPORT_CREATING; | |
9ef3e4a4 | 3784 | INIT_WORK(&vport->vport_delete_work, fc_vport_sched_delete); |
a53eb5e0 JS |
3785 | |
3786 | spin_lock_irqsave(shost->host_lock, flags); | |
3787 | ||
3788 | if (fc_host->npiv_vports_inuse >= fc_host->max_npiv_vports) { | |
3789 | spin_unlock_irqrestore(shost->host_lock, flags); | |
3790 | kfree(vport); | |
3791 | return -ENOSPC; | |
3792 | } | |
3793 | fc_host->npiv_vports_inuse++; | |
3794 | vport->number = fc_host->next_vport_number++; | |
3795 | list_add_tail(&vport->peers, &fc_host->vports); | |
4cd38e38 | 3796 | scsi_host_get(shost); /* for fc_host->vport list */ |
a53eb5e0 JS |
3797 | |
3798 | spin_unlock_irqrestore(shost->host_lock, flags); | |
3799 | ||
3800 | dev = &vport->dev; | |
3801 | device_initialize(dev); /* takes self reference */ | |
3802 | dev->parent = get_device(pdev); /* takes parent reference */ | |
3803 | dev->release = fc_vport_dev_release; | |
71610f55 KS |
3804 | dev_set_name(dev, "vport-%d:%d-%d", |
3805 | shost->host_no, channel, vport->number); | |
a53eb5e0 JS |
3806 | transport_setup_device(dev); |
3807 | ||
3808 | error = device_add(dev); | |
3809 | if (error) { | |
3810 | printk(KERN_ERR "FC Virtual Port device_add failed\n"); | |
3811 | goto delete_vport; | |
3812 | } | |
3813 | transport_add_device(dev); | |
3814 | transport_configure_device(dev); | |
3815 | ||
3816 | error = fci->f->vport_create(vport, ids->disable); | |
3817 | if (error) { | |
3818 | printk(KERN_ERR "FC Virtual Port LLDD Create failed\n"); | |
3819 | goto delete_vport_all; | |
3820 | } | |
3821 | ||
3822 | /* | |
3823 | * if the parent isn't the physical adapter's Scsi_Host, ensure | |
134699d2 | 3824 | * the Scsi_Host at least contains a symlink to the vport. |
a53eb5e0 JS |
3825 | */ |
3826 | if (pdev != &shost->shost_gendev) { | |
3827 | error = sysfs_create_link(&shost->shost_gendev.kobj, | |
71610f55 | 3828 | &dev->kobj, dev_name(dev)); |
a53eb5e0 JS |
3829 | if (error) |
3830 | printk(KERN_ERR | |
3831 | "%s: Cannot create vport symlinks for " | |
3832 | "%s, err=%d\n", | |
71610f55 | 3833 | __func__, dev_name(dev), error); |
a53eb5e0 JS |
3834 | } |
3835 | spin_lock_irqsave(shost->host_lock, flags); | |
3836 | vport->flags &= ~FC_VPORT_CREATING; | |
3837 | spin_unlock_irqrestore(shost->host_lock, flags); | |
3838 | ||
3839 | dev_printk(KERN_NOTICE, pdev, | |
71610f55 | 3840 | "%s created via shost%d channel %d\n", dev_name(dev), |
a53eb5e0 JS |
3841 | shost->host_no, channel); |
3842 | ||
3843 | *ret_vport = vport; | |
3844 | ||
3845 | return 0; | |
3846 | ||
3847 | delete_vport_all: | |
3848 | transport_remove_device(dev); | |
3849 | device_del(dev); | |
3850 | delete_vport: | |
3851 | transport_destroy_device(dev); | |
3852 | spin_lock_irqsave(shost->host_lock, flags); | |
3853 | list_del(&vport->peers); | |
4cd38e38 | 3854 | scsi_host_put(shost); /* for fc_host->vport list */ |
a53eb5e0 JS |
3855 | fc_host->npiv_vports_inuse--; |
3856 | spin_unlock_irqrestore(shost->host_lock, flags); | |
3857 | put_device(dev->parent); | |
3858 | kfree(vport); | |
3859 | ||
3860 | return error; | |
3861 | } | |
3862 | ||
a30c3f69 AV |
3863 | /** |
3864 | * fc_vport_create - Admin App or LLDD requests creation of a vport | |
3865 | * @shost: scsi host the virtual port is connected to. | |
3866 | * @channel: channel on shost port connected to. | |
3867 | * @ids: The world wide names, FC4 port roles, etc for | |
3868 | * the virtual port. | |
3869 | * | |
3870 | * Notes: | |
3871 | * This routine assumes no locks are held on entry. | |
3872 | */ | |
3873 | struct fc_vport * | |
3874 | fc_vport_create(struct Scsi_Host *shost, int channel, | |
3875 | struct fc_vport_identifiers *ids) | |
3876 | { | |
3877 | int stat; | |
3878 | struct fc_vport *vport; | |
3879 | ||
3880 | stat = fc_vport_setup(shost, channel, &shost->shost_gendev, | |
3881 | ids, &vport); | |
3882 | return stat ? NULL : vport; | |
3883 | } | |
3884 | EXPORT_SYMBOL(fc_vport_create); | |
a53eb5e0 JS |
3885 | |
3886 | /** | |
3887 | * fc_vport_terminate - Admin App or LLDD requests termination of a vport | |
3888 | * @vport: fc_vport to be terminated | |
3889 | * | |
3890 | * Calls the LLDD vport_delete() function, then deallocates and removes | |
3891 | * the vport from the shost and object tree. | |
3892 | * | |
3893 | * Notes: | |
3894 | * This routine assumes no locks are held on entry. | |
eb44820c | 3895 | */ |
a53eb5e0 JS |
3896 | int |
3897 | fc_vport_terminate(struct fc_vport *vport) | |
3898 | { | |
3899 | struct Scsi_Host *shost = vport_to_shost(vport); | |
3900 | struct fc_host_attrs *fc_host = shost_to_fc_host(shost); | |
3901 | struct fc_internal *i = to_fc_internal(shost->transportt); | |
3902 | struct device *dev = &vport->dev; | |
3903 | unsigned long flags; | |
3904 | int stat; | |
3905 | ||
a53eb5e0 JS |
3906 | if (i->f->vport_delete) |
3907 | stat = i->f->vport_delete(vport); | |
3908 | else | |
3909 | stat = -ENOENT; | |
3910 | ||
3911 | spin_lock_irqsave(shost->host_lock, flags); | |
3912 | vport->flags &= ~FC_VPORT_DELETING; | |
3913 | if (!stat) { | |
3914 | vport->flags |= FC_VPORT_DELETED; | |
3915 | list_del(&vport->peers); | |
3916 | fc_host->npiv_vports_inuse--; | |
4cd38e38 | 3917 | scsi_host_put(shost); /* for fc_host->vport list */ |
a53eb5e0 JS |
3918 | } |
3919 | spin_unlock_irqrestore(shost->host_lock, flags); | |
3920 | ||
3921 | if (stat) | |
3922 | return stat; | |
3923 | ||
3924 | if (dev->parent != &shost->shost_gendev) | |
71610f55 | 3925 | sysfs_remove_link(&shost->shost_gendev.kobj, dev_name(dev)); |
a53eb5e0 JS |
3926 | transport_remove_device(dev); |
3927 | device_del(dev); | |
3928 | transport_destroy_device(dev); | |
3929 | ||
3930 | /* | |
3931 | * Removing our self-reference should mean our | |
3932 | * release function gets called, which will drop the remaining | |
3933 | * parent reference and free the data structure. | |
3934 | */ | |
3935 | put_device(dev); /* for self-reference */ | |
3936 | ||
3937 | return 0; /* SUCCESS */ | |
3938 | } | |
3939 | EXPORT_SYMBOL(fc_vport_terminate); | |
3940 | ||
9ef3e4a4 JS |
3941 | /** |
3942 | * fc_vport_sched_delete - workq-based delete request for a vport | |
9ef3e4a4 | 3943 | * @work: vport to be deleted. |
eb44820c | 3944 | */ |
9ef3e4a4 JS |
3945 | static void |
3946 | fc_vport_sched_delete(struct work_struct *work) | |
3947 | { | |
3948 | struct fc_vport *vport = | |
3949 | container_of(work, struct fc_vport, vport_delete_work); | |
3950 | int stat; | |
3951 | ||
3952 | stat = fc_vport_terminate(vport); | |
3953 | if (stat) | |
3954 | dev_printk(KERN_ERR, vport->dev.parent, | |
3955 | "%s: %s could not be deleted created via " | |
cadbd4a5 | 3956 | "shost%d channel %d - error %d\n", __func__, |
71610f55 | 3957 | dev_name(&vport->dev), vport->shost->host_no, |
9ef3e4a4 JS |
3958 | vport->channel, stat); |
3959 | } | |
3960 | ||
a53eb5e0 | 3961 | |
9e4f5e29 JS |
3962 | /* |
3963 | * BSG support | |
3964 | */ | |
3965 | ||
9e4f5e29 JS |
3966 | /** |
3967 | * fc_bsg_job_timeout - handler for when a bsg request timesout | |
3968 | * @req: request that timed out | |
3969 | */ | |
3970 | static enum blk_eh_timer_return | |
3971 | fc_bsg_job_timeout(struct request *req) | |
3972 | { | |
b468b6a4 | 3973 | struct bsg_job *job = blk_mq_rq_to_pdu(req); |
cd21c605 | 3974 | struct Scsi_Host *shost = fc_bsg_to_shost(job); |
1d69b122 | 3975 | struct fc_rport *rport = fc_bsg_to_rport(job); |
9e4f5e29 | 3976 | struct fc_internal *i = to_fc_internal(shost->transportt); |
ad7660cc | 3977 | int err = 0, inflight = 0; |
9e4f5e29 | 3978 | |
1d69b122 | 3979 | if (rport && rport->port_state == FC_PORTSTATE_BLOCKED) |
9e4f5e29 JS |
3980 | return BLK_EH_RESET_TIMER; |
3981 | ||
fb6f7c8d | 3982 | inflight = bsg_job_get(job); |
9e4f5e29 | 3983 | |
ad7660cc | 3984 | if (inflight && i->f->bsg_timeout) { |
9e4f5e29 JS |
3985 | /* call LLDD to abort the i/o as it has timed out */ |
3986 | err = i->f->bsg_timeout(job); | |
b8f08645 | 3987 | if (err == -EAGAIN) { |
fb6f7c8d | 3988 | bsg_job_put(job); |
b8f08645 SS |
3989 | return BLK_EH_RESET_TIMER; |
3990 | } else if (err) | |
9e4f5e29 JS |
3991 | printk(KERN_ERR "ERROR: FC BSG request timeout - LLD " |
3992 | "abort failed with status %d\n", err); | |
3993 | } | |
3994 | ||
9e4f5e29 | 3995 | /* the blk_end_sync_io() doesn't check the error */ |
1fc2b62e | 3996 | if (inflight) |
cd2f076f | 3997 | blk_mq_end_request(req, BLK_STS_IOERR); |
1fc2b62e | 3998 | return BLK_EH_DONE; |
9e4f5e29 JS |
3999 | } |
4000 | ||
9e4f5e29 JS |
4001 | /** |
4002 | * fc_bsg_host_dispatch - process fc host bsg requests and dispatch to LLDD | |
4003 | * @shost: scsi host rport attached to | |
4004 | * @job: bsg job to be processed | |
4005 | */ | |
a0f4bd7f | 4006 | static int fc_bsg_host_dispatch(struct Scsi_Host *shost, struct bsg_job *job) |
9e4f5e29 JS |
4007 | { |
4008 | struct fc_internal *i = to_fc_internal(shost->transportt); | |
01e0e15c JT |
4009 | struct fc_bsg_request *bsg_request = job->request; |
4010 | struct fc_bsg_reply *bsg_reply = job->reply; | |
9e4f5e29 JS |
4011 | int cmdlen = sizeof(uint32_t); /* start with length of msgcode */ |
4012 | int ret; | |
4013 | ||
01e0e15c JT |
4014 | /* check if we really have all the request data needed */ |
4015 | if (job->request_len < cmdlen) { | |
4016 | ret = -ENOMSG; | |
4017 | goto fail_host_msg; | |
4018 | } | |
4019 | ||
9e4f5e29 | 4020 | /* Validate the host command */ |
01e0e15c | 4021 | switch (bsg_request->msgcode) { |
9e4f5e29 JS |
4022 | case FC_BSG_HST_ADD_RPORT: |
4023 | cmdlen += sizeof(struct fc_bsg_host_add_rport); | |
4024 | break; | |
4025 | ||
4026 | case FC_BSG_HST_DEL_RPORT: | |
4027 | cmdlen += sizeof(struct fc_bsg_host_del_rport); | |
4028 | break; | |
4029 | ||
4030 | case FC_BSG_HST_ELS_NOLOGIN: | |
4031 | cmdlen += sizeof(struct fc_bsg_host_els); | |
4032 | /* there better be a xmt and rcv payloads */ | |
4033 | if ((!job->request_payload.payload_len) || | |
4034 | (!job->reply_payload.payload_len)) { | |
4035 | ret = -EINVAL; | |
4036 | goto fail_host_msg; | |
4037 | } | |
4038 | break; | |
4039 | ||
4040 | case FC_BSG_HST_CT: | |
4041 | cmdlen += sizeof(struct fc_bsg_host_ct); | |
4042 | /* there better be xmt and rcv payloads */ | |
4043 | if ((!job->request_payload.payload_len) || | |
4044 | (!job->reply_payload.payload_len)) { | |
4045 | ret = -EINVAL; | |
4046 | goto fail_host_msg; | |
4047 | } | |
4048 | break; | |
4049 | ||
4050 | case FC_BSG_HST_VENDOR: | |
4051 | cmdlen += sizeof(struct fc_bsg_host_vendor); | |
4052 | if ((shost->hostt->vendor_id == 0L) || | |
01e0e15c | 4053 | (bsg_request->rqst_data.h_vendor.vendor_id != |
9e4f5e29 JS |
4054 | shost->hostt->vendor_id)) { |
4055 | ret = -ESRCH; | |
4056 | goto fail_host_msg; | |
4057 | } | |
4058 | break; | |
4059 | ||
4060 | default: | |
4061 | ret = -EBADR; | |
4062 | goto fail_host_msg; | |
4063 | } | |
4064 | ||
9e4f5e29 JS |
4065 | ret = i->f->bsg_request(job); |
4066 | if (!ret) | |
a0f4bd7f | 4067 | return 0; |
9e4f5e29 JS |
4068 | |
4069 | fail_host_msg: | |
4070 | /* return the errno failure code as the only status */ | |
4071 | BUG_ON(job->reply_len < sizeof(uint32_t)); | |
01e0e15c JT |
4072 | bsg_reply->reply_payload_rcv_len = 0; |
4073 | bsg_reply->result = ret; | |
9e4f5e29 | 4074 | job->reply_len = sizeof(uint32_t); |
06548160 | 4075 | bsg_job_done(job, bsg_reply->result, |
1abaede7 | 4076 | bsg_reply->reply_payload_rcv_len); |
a0f4bd7f | 4077 | return 0; |
9e4f5e29 JS |
4078 | } |
4079 | ||
4080 | ||
4081 | /* | |
4082 | * fc_bsg_goose_queue - restart rport queue in case it was stopped | |
4083 | * @rport: rport to be restarted | |
4084 | */ | |
4085 | static void | |
4086 | fc_bsg_goose_queue(struct fc_rport *rport) | |
4087 | { | |
378eeade | 4088 | struct request_queue *q = rport->rqst_q; |
9e4f5e29 | 4089 | |
cd2f076f JA |
4090 | if (q) |
4091 | blk_mq_run_hw_queues(q, true); | |
9e4f5e29 JS |
4092 | } |
4093 | ||
9e4f5e29 JS |
4094 | /** |
4095 | * fc_bsg_rport_dispatch - process rport bsg requests and dispatch to LLDD | |
4096 | * @shost: scsi host rport attached to | |
9e4f5e29 JS |
4097 | * @job: bsg job to be processed |
4098 | */ | |
a0f4bd7f | 4099 | static int fc_bsg_rport_dispatch(struct Scsi_Host *shost, struct bsg_job *job) |
9e4f5e29 JS |
4100 | { |
4101 | struct fc_internal *i = to_fc_internal(shost->transportt); | |
01e0e15c JT |
4102 | struct fc_bsg_request *bsg_request = job->request; |
4103 | struct fc_bsg_reply *bsg_reply = job->reply; | |
9e4f5e29 JS |
4104 | int cmdlen = sizeof(uint32_t); /* start with length of msgcode */ |
4105 | int ret; | |
4106 | ||
01e0e15c JT |
4107 | /* check if we really have all the request data needed */ |
4108 | if (job->request_len < cmdlen) { | |
4109 | ret = -ENOMSG; | |
4110 | goto fail_rport_msg; | |
4111 | } | |
4112 | ||
9e4f5e29 | 4113 | /* Validate the rport command */ |
01e0e15c | 4114 | switch (bsg_request->msgcode) { |
9e4f5e29 JS |
4115 | case FC_BSG_RPT_ELS: |
4116 | cmdlen += sizeof(struct fc_bsg_rport_els); | |
4117 | goto check_bidi; | |
4118 | ||
4119 | case FC_BSG_RPT_CT: | |
4120 | cmdlen += sizeof(struct fc_bsg_rport_ct); | |
4121 | check_bidi: | |
4122 | /* there better be xmt and rcv payloads */ | |
4123 | if ((!job->request_payload.payload_len) || | |
4124 | (!job->reply_payload.payload_len)) { | |
4125 | ret = -EINVAL; | |
4126 | goto fail_rport_msg; | |
4127 | } | |
4128 | break; | |
4129 | default: | |
4130 | ret = -EBADR; | |
4131 | goto fail_rport_msg; | |
4132 | } | |
4133 | ||
9e4f5e29 JS |
4134 | ret = i->f->bsg_request(job); |
4135 | if (!ret) | |
a0f4bd7f | 4136 | return 0; |
9e4f5e29 JS |
4137 | |
4138 | fail_rport_msg: | |
4139 | /* return the errno failure code as the only status */ | |
4140 | BUG_ON(job->reply_len < sizeof(uint32_t)); | |
01e0e15c JT |
4141 | bsg_reply->reply_payload_rcv_len = 0; |
4142 | bsg_reply->result = ret; | |
9e4f5e29 | 4143 | job->reply_len = sizeof(uint32_t); |
06548160 | 4144 | bsg_job_done(job, bsg_reply->result, |
1abaede7 | 4145 | bsg_reply->reply_payload_rcv_len); |
a0f4bd7f | 4146 | return 0; |
9e4f5e29 JS |
4147 | } |
4148 | ||
a0f4bd7f | 4149 | static int fc_bsg_dispatch(struct bsg_job *job) |
9e4f5e29 | 4150 | { |
a0f4bd7f | 4151 | struct Scsi_Host *shost = fc_bsg_to_shost(job); |
9e4f5e29 | 4152 | |
a0f4bd7f JT |
4153 | if (scsi_is_fc_rport(job->dev)) |
4154 | return fc_bsg_rport_dispatch(shost, job); | |
4155 | else | |
4156 | return fc_bsg_host_dispatch(shost, job); | |
9e4f5e29 JS |
4157 | } |
4158 | ||
cd2f076f JA |
4159 | static blk_status_t fc_bsg_rport_prep(struct fc_rport *rport) |
4160 | { | |
4161 | if (rport->port_state == FC_PORTSTATE_BLOCKED && | |
4162 | !(rport->flags & FC_RPORT_FAST_FAIL_TIMEDOUT)) | |
4163 | return BLK_STS_RESOURCE; | |
4164 | ||
4165 | if (rport->port_state != FC_PORTSTATE_ONLINE) | |
4166 | return BLK_STS_IOERR; | |
4167 | ||
4168 | return BLK_STS_OK; | |
4169 | } | |
4170 | ||
4171 | ||
4172 | static int fc_bsg_dispatch_prep(struct bsg_job *job) | |
4173 | { | |
4174 | struct fc_rport *rport = fc_bsg_to_rport(job); | |
4175 | blk_status_t ret; | |
4176 | ||
4177 | ret = fc_bsg_rport_prep(rport); | |
4178 | switch (ret) { | |
4179 | case BLK_STS_OK: | |
4180 | break; | |
4181 | case BLK_STS_RESOURCE: | |
4182 | return -EAGAIN; | |
4183 | default: | |
4184 | return -EIO; | |
4185 | } | |
4186 | ||
4187 | return fc_bsg_dispatch(job); | |
4188 | } | |
4189 | ||
9e4f5e29 JS |
4190 | /** |
4191 | * fc_bsg_hostadd - Create and add the bsg hooks so we can receive requests | |
4192 | * @shost: shost for fc_host | |
4193 | * @fc_host: fc_host adding the structures to | |
4194 | */ | |
4195 | static int | |
4196 | fc_bsg_hostadd(struct Scsi_Host *shost, struct fc_host_attrs *fc_host) | |
4197 | { | |
4198 | struct device *dev = &shost->shost_gendev; | |
4199 | struct fc_internal *i = to_fc_internal(shost->transportt); | |
4200 | struct request_queue *q; | |
3c559ea8 | 4201 | char bsg_name[20]; |
9e4f5e29 JS |
4202 | |
4203 | fc_host->rqst_q = NULL; | |
4204 | ||
4205 | if (!i->f->bsg_request) | |
4206 | return -ENOTSUPP; | |
4207 | ||
4208 | snprintf(bsg_name, sizeof(bsg_name), | |
4209 | "fc_host%d", shost->host_no); | |
4210 | ||
aae3b069 JA |
4211 | q = bsg_setup_queue(dev, bsg_name, fc_bsg_dispatch, fc_bsg_job_timeout, |
4212 | i->f->dd_bsg_size); | |
8ae94eb6 | 4213 | if (IS_ERR(q)) { |
a0f4bd7f JT |
4214 | dev_err(dev, |
4215 | "fc_host%d: bsg interface failed to initialize - setup queue\n", | |
4216 | shost->host_no); | |
8ae94eb6 | 4217 | return PTR_ERR(q); |
9e4f5e29 | 4218 | } |
8ae94eb6 | 4219 | __scsi_init_queue(shost, q); |
a0f4bd7f | 4220 | blk_queue_rq_timeout(q, FC_DEFAULT_BSG_TIMEOUT); |
9e4f5e29 JS |
4221 | fc_host->rqst_q = q; |
4222 | return 0; | |
4223 | } | |
4224 | ||
9e4f5e29 JS |
4225 | /** |
4226 | * fc_bsg_rportadd - Create and add the bsg hooks so we can receive requests | |
4227 | * @shost: shost that rport is attached to | |
4228 | * @rport: rport that the bsg hooks are being attached to | |
4229 | */ | |
4230 | static int | |
4231 | fc_bsg_rportadd(struct Scsi_Host *shost, struct fc_rport *rport) | |
4232 | { | |
4233 | struct device *dev = &rport->dev; | |
4234 | struct fc_internal *i = to_fc_internal(shost->transportt); | |
4235 | struct request_queue *q; | |
9e4f5e29 JS |
4236 | |
4237 | rport->rqst_q = NULL; | |
4238 | ||
4239 | if (!i->f->bsg_request) | |
4240 | return -ENOTSUPP; | |
4241 | ||
cd2f076f | 4242 | q = bsg_setup_queue(dev, dev_name(dev), fc_bsg_dispatch_prep, |
aae3b069 | 4243 | fc_bsg_job_timeout, i->f->dd_bsg_size); |
8ae94eb6 | 4244 | if (IS_ERR(q)) { |
a0f4bd7f | 4245 | dev_err(dev, "failed to setup bsg queue\n"); |
8ae94eb6 | 4246 | return PTR_ERR(q); |
9e4f5e29 | 4247 | } |
8ae94eb6 | 4248 | __scsi_init_queue(shost, q); |
a0f4bd7f | 4249 | blk_queue_rq_timeout(q, BLK_DEFAULT_SG_TIMEOUT); |
9e4f5e29 JS |
4250 | rport->rqst_q = q; |
4251 | return 0; | |
4252 | } | |
4253 | ||
4254 | ||
4255 | /** | |
4256 | * fc_bsg_remove - Deletes the bsg hooks on fchosts/rports | |
4257 | * @q: the request_queue that is to be torn down. | |
78d16341 JS |
4258 | * |
4259 | * Notes: | |
4260 | * Before unregistering the queue empty any requests that are blocked | |
4261 | * | |
4262 | * | |
9e4f5e29 JS |
4263 | */ |
4264 | static void | |
4265 | fc_bsg_remove(struct request_queue *q) | |
4266 | { | |
5e28b8d8 | 4267 | bsg_remove_queue(q); |
9e4f5e29 JS |
4268 | } |
4269 | ||
4270 | ||
9ef3e4a4 JS |
4271 | /* Original Author: Martin Hicks */ |
4272 | MODULE_AUTHOR("James Smart"); | |
1da177e4 LT |
4273 | MODULE_DESCRIPTION("FC Transport Attributes"); |
4274 | MODULE_LICENSE("GPL"); | |
4275 | ||
4276 | module_init(fc_transport_init); | |
4277 | module_exit(fc_transport_exit); |