Commit | Line | Data |
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b2441318 | 1 | // SPDX-License-Identifier: GPL-2.0 |
41fa2ada | 2 | /* |
553448f6 | 3 | * zfcp device driver |
1da177e4 | 4 | * |
553448f6 | 5 | * Interface to Linux SCSI midlayer. |
41fa2ada | 6 | * |
fa89adba | 7 | * Copyright IBM Corp. 2002, 2018 |
1da177e4 LT |
8 | */ |
9 | ||
ecf39d42 CS |
10 | #define KMSG_COMPONENT "zfcp" |
11 | #define pr_fmt(fmt) KMSG_COMPONENT ": " fmt | |
12 | ||
3a4c5d59 | 13 | #include <linux/module.h> |
4318e08c | 14 | #include <linux/types.h> |
5a0e3ad6 | 15 | #include <linux/slab.h> |
4318e08c | 16 | #include <scsi/fc/fc_fcp.h> |
ef3eb71d | 17 | #include <scsi/scsi_eh.h> |
60063497 | 18 | #include <linux/atomic.h> |
dcd20e23 CS |
19 | #include "zfcp_ext.h" |
20 | #include "zfcp_dbf.h" | |
7c7dc196 | 21 | #include "zfcp_fc.h" |
b6bd2fb9 | 22 | #include "zfcp_reqlist.h" |
1da177e4 | 23 | |
a40a1baf CS |
24 | static unsigned int default_depth = 32; |
25 | module_param_named(queue_depth, default_depth, uint, 0600); | |
26 | MODULE_PARM_DESC(queue_depth, "Default queue depth for new SCSI devices"); | |
27 | ||
ef3eb71d | 28 | static bool enable_dif; |
cc405ace | 29 | module_param_named(dif, enable_dif, bool, 0400); |
636db60b FL |
30 | MODULE_PARM_DESC(dif, "Enable DIF data integrity support (default off)"); |
31 | ||
32 | bool zfcp_experimental_dix; | |
33 | module_param_named(dix, zfcp_experimental_dix, bool, 0400); | |
34 | MODULE_PARM_DESC(dix, "Enable experimental DIX (data integrity extension) support which implies DIF support (default off)"); | |
ef3eb71d | 35 | |
5156934b | 36 | static bool allow_lun_scan = true; |
0d81b4e8 CS |
37 | module_param(allow_lun_scan, bool, 0600); |
38 | MODULE_PARM_DESC(allow_lun_scan, "For NPIV, scan and attach all storage LUNs"); | |
39 | ||
b62a8d9b | 40 | static void zfcp_scsi_slave_destroy(struct scsi_device *sdev) |
1da177e4 | 41 | { |
b62a8d9b CS |
42 | struct zfcp_scsi_dev *zfcp_sdev = sdev_to_zfcp(sdev); |
43 | ||
44f747ff SM |
44 | /* if previous slave_alloc returned early, there is nothing to do */ |
45 | if (!zfcp_sdev->port) | |
46 | return; | |
47 | ||
b62a8d9b CS |
48 | zfcp_erp_lun_shutdown_wait(sdev, "scssd_1"); |
49 | put_device(&zfcp_sdev->port->dev); | |
1da177e4 LT |
50 | } |
51 | ||
f76af7d7 | 52 | static int zfcp_scsi_slave_configure(struct scsi_device *sdp) |
1da177e4 LT |
53 | { |
54 | if (sdp->tagged_supported) | |
db5ed4df | 55 | scsi_change_queue_depth(sdp, default_depth); |
1da177e4 LT |
56 | return 0; |
57 | } | |
58 | ||
f76af7d7 | 59 | static void zfcp_scsi_command_fail(struct scsi_cmnd *scpnt, int result) |
1da177e4 | 60 | { |
feac6a07 | 61 | set_host_byte(scpnt, result); |
250a1352 | 62 | zfcp_dbf_scsi_fail_send(scpnt); |
1da177e4 LT |
63 | scpnt->scsi_done(scpnt); |
64 | } | |
65 | ||
e55f8753 CS |
66 | static |
67 | int zfcp_scsi_queuecommand(struct Scsi_Host *shost, struct scsi_cmnd *scpnt) | |
1da177e4 | 68 | { |
b62a8d9b | 69 | struct zfcp_scsi_dev *zfcp_sdev = sdev_to_zfcp(scpnt->device); |
a2fa0aed | 70 | struct fc_rport *rport = starget_to_rport(scsi_target(scpnt->device)); |
b62a8d9b | 71 | int status, scsi_result, ret; |
1da177e4 LT |
72 | |
73 | /* reset the status for this request */ | |
74 | scpnt->result = 0; | |
75 | scpnt->host_scribble = NULL; | |
1da177e4 | 76 | |
a2fa0aed CS |
77 | scsi_result = fc_remote_port_chkready(rport); |
78 | if (unlikely(scsi_result)) { | |
79 | scpnt->result = scsi_result; | |
250a1352 | 80 | zfcp_dbf_scsi_fail_send(scpnt); |
a2fa0aed CS |
81 | scpnt->scsi_done(scpnt); |
82 | return 0; | |
83 | } | |
84 | ||
b62a8d9b | 85 | status = atomic_read(&zfcp_sdev->status); |
8830271c | 86 | if (unlikely(status & ZFCP_STATUS_COMMON_ERP_FAILED) && |
b62a8d9b | 87 | !(atomic_read(&zfcp_sdev->port->status) & |
8830271c | 88 | ZFCP_STATUS_COMMON_ERP_FAILED)) { |
b62a8d9b | 89 | /* only LUN access denied, but port is good |
8830271c | 90 | * not covered by FC transport, have to fail here */ |
f76af7d7 | 91 | zfcp_scsi_command_fail(scpnt, DID_ERROR); |
a419aef8 | 92 | return 0; |
f76af7d7 MP |
93 | } |
94 | ||
8830271c | 95 | if (unlikely(!(status & ZFCP_STATUS_COMMON_UNBLOCKED))) { |
6f2ce1c6 | 96 | /* This could be |
8830271c CS |
97 | * call to rport_delete pending: mimic retry from |
98 | * fc_remote_port_chkready until rport is BLOCKED | |
99 | */ | |
100 | zfcp_scsi_command_fail(scpnt, DID_IMM_RETRY); | |
101 | return 0; | |
102 | } | |
103 | ||
b62a8d9b | 104 | ret = zfcp_fsf_fcp_cmnd(scpnt); |
f76af7d7 | 105 | if (unlikely(ret == -EBUSY)) |
f7a65e92 | 106 | return SCSI_MLQUEUE_DEVICE_BUSY; |
f76af7d7 MP |
107 | else if (unlikely(ret < 0)) |
108 | return SCSI_MLQUEUE_HOST_BUSY; | |
1da177e4 | 109 | |
f76af7d7 | 110 | return ret; |
1da177e4 LT |
111 | } |
112 | ||
b62a8d9b | 113 | static int zfcp_scsi_slave_alloc(struct scsi_device *sdev) |
1da177e4 | 114 | { |
b62a8d9b CS |
115 | struct fc_rport *rport = starget_to_rport(scsi_target(sdev)); |
116 | struct zfcp_adapter *adapter = | |
117 | (struct zfcp_adapter *) sdev->host->hostdata[0]; | |
118 | struct zfcp_scsi_dev *zfcp_sdev = sdev_to_zfcp(sdev); | |
1da177e4 | 119 | struct zfcp_port *port; |
f76af7d7 | 120 | struct zfcp_unit *unit; |
0d81b4e8 | 121 | int npiv = adapter->connection_features & FSF_FEATURE_NPIV_MODE; |
1da177e4 | 122 | |
ab31fd0c SM |
123 | zfcp_sdev->erp_action.adapter = adapter; |
124 | zfcp_sdev->erp_action.sdev = sdev; | |
125 | ||
b62a8d9b CS |
126 | port = zfcp_get_port_by_wwpn(adapter, rport->port_name); |
127 | if (!port) | |
128 | return -ENXIO; | |
f76af7d7 | 129 | |
ab31fd0c SM |
130 | zfcp_sdev->erp_action.port = port; |
131 | ||
b62a8d9b CS |
132 | unit = zfcp_unit_find(port, zfcp_scsi_dev_lun(sdev)); |
133 | if (unit) | |
134 | put_device(&unit->dev); | |
f76af7d7 | 135 | |
0d81b4e8 | 136 | if (!unit && !(allow_lun_scan && npiv)) { |
b62a8d9b CS |
137 | put_device(&port->dev); |
138 | return -ENXIO; | |
f76af7d7 | 139 | } |
f76af7d7 | 140 | |
b62a8d9b CS |
141 | zfcp_sdev->port = port; |
142 | zfcp_sdev->latencies.write.channel.min = 0xFFFFFFFF; | |
143 | zfcp_sdev->latencies.write.fabric.min = 0xFFFFFFFF; | |
144 | zfcp_sdev->latencies.read.channel.min = 0xFFFFFFFF; | |
145 | zfcp_sdev->latencies.read.fabric.min = 0xFFFFFFFF; | |
146 | zfcp_sdev->latencies.cmd.channel.min = 0xFFFFFFFF; | |
147 | zfcp_sdev->latencies.cmd.fabric.min = 0xFFFFFFFF; | |
148 | spin_lock_init(&zfcp_sdev->latencies.lock); | |
f76af7d7 | 149 | |
edaed859 | 150 | zfcp_erp_set_lun_status(sdev, ZFCP_STATUS_COMMON_RUNNING); |
ea4a3a6a | 151 | zfcp_erp_lun_reopen(sdev, 0, "scsla_1"); |
b62a8d9b CS |
152 | zfcp_erp_wait(port->adapter); |
153 | ||
154 | return 0; | |
1da177e4 LT |
155 | } |
156 | ||
2b67fc46 | 157 | static int zfcp_scsi_eh_abort_handler(struct scsi_cmnd *scpnt) |
1da177e4 | 158 | { |
63caf367 CS |
159 | struct Scsi_Host *scsi_host = scpnt->device->host; |
160 | struct zfcp_adapter *adapter = | |
161 | (struct zfcp_adapter *) scsi_host->hostdata[0]; | |
63caf367 | 162 | struct zfcp_fsf_req *old_req, *abrt_req; |
1da177e4 | 163 | unsigned long flags; |
a11a52be | 164 | unsigned long old_reqid = (unsigned long) scpnt->host_scribble; |
a1dbfddd | 165 | int retval = SUCCESS, ret; |
63caf367 | 166 | int retry = 3; |
a11a52be | 167 | char *dbf_tag; |
1da177e4 | 168 | |
059c97d0 | 169 | /* avoid race condition between late normal completion and abort */ |
1da177e4 LT |
170 | write_lock_irqsave(&adapter->abort_lock, flags); |
171 | ||
b6bd2fb9 | 172 | old_req = zfcp_reqlist_find(adapter->req_list, old_reqid); |
63caf367 | 173 | if (!old_req) { |
1da177e4 | 174 | write_unlock_irqrestore(&adapter->abort_lock, flags); |
250a1352 | 175 | zfcp_dbf_scsi_abort("abrt_or", scpnt, NULL); |
c6936e7f | 176 | return FAILED; /* completion could be in progress */ |
1da177e4 | 177 | } |
63caf367 | 178 | old_req->data = NULL; |
1da177e4 | 179 | |
4eff4a36 | 180 | /* don't access old fsf_req after releasing the abort_lock */ |
1da177e4 | 181 | write_unlock_irqrestore(&adapter->abort_lock, flags); |
4eff4a36 | 182 | |
63caf367 | 183 | while (retry--) { |
b62a8d9b | 184 | abrt_req = zfcp_fsf_abort_fcp_cmnd(scpnt); |
63caf367 CS |
185 | if (abrt_req) |
186 | break; | |
187 | ||
81979ae6 | 188 | zfcp_dbf_scsi_abort("abrt_wt", scpnt, NULL); |
63caf367 | 189 | zfcp_erp_wait(adapter); |
a1dbfddd | 190 | ret = fc_block_scsi_eh(scpnt); |
250a1352 SS |
191 | if (ret) { |
192 | zfcp_dbf_scsi_abort("abrt_bl", scpnt, NULL); | |
a1dbfddd | 193 | return ret; |
250a1352 | 194 | } |
63caf367 CS |
195 | if (!(atomic_read(&adapter->status) & |
196 | ZFCP_STATUS_COMMON_RUNNING)) { | |
250a1352 | 197 | zfcp_dbf_scsi_abort("abrt_ru", scpnt, NULL); |
63caf367 CS |
198 | return SUCCESS; |
199 | } | |
1da177e4 | 200 | } |
250a1352 SS |
201 | if (!abrt_req) { |
202 | zfcp_dbf_scsi_abort("abrt_ar", scpnt, NULL); | |
63caf367 | 203 | return FAILED; |
250a1352 | 204 | } |
1da177e4 | 205 | |
058b8647 | 206 | wait_for_completion(&abrt_req->completion); |
059c97d0 | 207 | |
63caf367 | 208 | if (abrt_req->status & ZFCP_STATUS_FSFREQ_ABORTSUCCEEDED) |
250a1352 | 209 | dbf_tag = "abrt_ok"; |
63caf367 | 210 | else if (abrt_req->status & ZFCP_STATUS_FSFREQ_ABORTNOTNEEDED) |
250a1352 | 211 | dbf_tag = "abrt_nn"; |
63caf367 | 212 | else { |
250a1352 | 213 | dbf_tag = "abrt_fa"; |
1da177e4 | 214 | retval = FAILED; |
1da177e4 | 215 | } |
250a1352 | 216 | zfcp_dbf_scsi_abort(dbf_tag, scpnt, abrt_req); |
63caf367 | 217 | zfcp_fsf_req_free(abrt_req); |
f76af7d7 | 218 | return retval; |
1da177e4 LT |
219 | } |
220 | ||
dac37e15 BB |
221 | struct zfcp_scsi_req_filter { |
222 | u8 tmf_scope; | |
223 | u32 lun_handle; | |
224 | u32 port_handle; | |
225 | }; | |
226 | ||
227 | static void zfcp_scsi_forget_cmnd(struct zfcp_fsf_req *old_req, void *data) | |
228 | { | |
229 | struct zfcp_scsi_req_filter *filter = | |
230 | (struct zfcp_scsi_req_filter *)data; | |
231 | ||
232 | /* already aborted - prevent side-effects - or not a SCSI command */ | |
f9eca022 SM |
233 | if (old_req->data == NULL || |
234 | zfcp_fsf_req_is_status_read_buffer(old_req) || | |
235 | old_req->qtcb->header.fsf_command != FSF_QTCB_FCP_CMND) | |
dac37e15 BB |
236 | return; |
237 | ||
238 | /* (tmf_scope == FCP_TMF_TGT_RESET || tmf_scope == FCP_TMF_LUN_RESET) */ | |
239 | if (old_req->qtcb->header.port_handle != filter->port_handle) | |
240 | return; | |
241 | ||
242 | if (filter->tmf_scope == FCP_TMF_LUN_RESET && | |
243 | old_req->qtcb->header.lun_handle != filter->lun_handle) | |
244 | return; | |
245 | ||
246 | zfcp_dbf_scsi_nullcmnd((struct scsi_cmnd *)old_req->data, old_req); | |
247 | old_req->data = NULL; | |
248 | } | |
249 | ||
250 | static void zfcp_scsi_forget_cmnds(struct zfcp_scsi_dev *zsdev, u8 tm_flags) | |
251 | { | |
252 | struct zfcp_adapter *adapter = zsdev->port->adapter; | |
253 | struct zfcp_scsi_req_filter filter = { | |
254 | .tmf_scope = FCP_TMF_TGT_RESET, | |
255 | .port_handle = zsdev->port->handle, | |
256 | }; | |
257 | unsigned long flags; | |
258 | ||
259 | if (tm_flags == FCP_TMF_LUN_RESET) { | |
260 | filter.tmf_scope = FCP_TMF_LUN_RESET; | |
261 | filter.lun_handle = zsdev->lun_handle; | |
262 | } | |
263 | ||
264 | /* | |
265 | * abort_lock secures against other processings - in the abort-function | |
266 | * and normal cmnd-handler - of (struct zfcp_fsf_req *)->data | |
267 | */ | |
268 | write_lock_irqsave(&adapter->abort_lock, flags); | |
269 | zfcp_reqlist_apply_for_all(adapter->req_list, zfcp_scsi_forget_cmnd, | |
270 | &filter); | |
271 | write_unlock_irqrestore(&adapter->abort_lock, flags); | |
272 | } | |
273 | ||
674595d8 | 274 | /** |
d39eda54 | 275 | * zfcp_scsi_task_mgmt_function() - Send a task management function (sync). |
674595d8 SM |
276 | * @sdev: Pointer to SCSI device to send the task management command to. |
277 | * @tm_flags: Task management flags, | |
278 | * here we only handle %FCP_TMF_TGT_RESET or %FCP_TMF_LUN_RESET. | |
279 | */ | |
d39eda54 | 280 | static int zfcp_scsi_task_mgmt_function(struct scsi_device *sdev, u8 tm_flags) |
1da177e4 | 281 | { |
82212118 | 282 | struct zfcp_scsi_dev *zfcp_sdev = sdev_to_zfcp(sdev); |
b62a8d9b | 283 | struct zfcp_adapter *adapter = zfcp_sdev->port->adapter; |
42afc652 | 284 | struct fc_rport *rport = starget_to_rport(scsi_target(sdev)); |
564e1c86 | 285 | struct zfcp_fsf_req *fsf_req = NULL; |
a1dbfddd | 286 | int retval = SUCCESS, ret; |
63caf367 CS |
287 | int retry = 3; |
288 | ||
289 | while (retry--) { | |
26f5fa9d | 290 | fsf_req = zfcp_fsf_fcp_task_mgmt(sdev, tm_flags); |
63caf367 CS |
291 | if (fsf_req) |
292 | break; | |
293 | ||
82212118 | 294 | zfcp_dbf_scsi_devreset("wait", sdev, tm_flags, NULL); |
63caf367 | 295 | zfcp_erp_wait(adapter); |
42afc652 | 296 | ret = fc_block_rport(rport); |
1a5d999e | 297 | if (ret) { |
82212118 | 298 | zfcp_dbf_scsi_devreset("fiof", sdev, tm_flags, NULL); |
a1dbfddd | 299 | return ret; |
1a5d999e | 300 | } |
a1dbfddd | 301 | |
63caf367 CS |
302 | if (!(atomic_read(&adapter->status) & |
303 | ZFCP_STATUS_COMMON_RUNNING)) { | |
82212118 | 304 | zfcp_dbf_scsi_devreset("nres", sdev, tm_flags, NULL); |
63caf367 CS |
305 | return SUCCESS; |
306 | } | |
1da177e4 | 307 | } |
1a5d999e | 308 | if (!fsf_req) { |
82212118 | 309 | zfcp_dbf_scsi_devreset("reqf", sdev, tm_flags, NULL); |
63caf367 | 310 | return FAILED; |
1a5d999e | 311 | } |
1da177e4 | 312 | |
058b8647 | 313 | wait_for_completion(&fsf_req->completion); |
77eb1699 | 314 | |
8a36e453 | 315 | if (fsf_req->status & ZFCP_STATUS_FSFREQ_TMFUNCFAILED) { |
82212118 | 316 | zfcp_dbf_scsi_devreset("fail", sdev, tm_flags, fsf_req); |
f76af7d7 | 317 | retval = FAILED; |
dac37e15 | 318 | } else { |
82212118 | 319 | zfcp_dbf_scsi_devreset("okay", sdev, tm_flags, fsf_req); |
dac37e15 BB |
320 | zfcp_scsi_forget_cmnds(zfcp_sdev, tm_flags); |
321 | } | |
77eb1699 AH |
322 | |
323 | zfcp_fsf_req_free(fsf_req); | |
1da177e4 LT |
324 | return retval; |
325 | } | |
326 | ||
f76af7d7 MP |
327 | static int zfcp_scsi_eh_device_reset_handler(struct scsi_cmnd *scpnt) |
328 | { | |
674595d8 SM |
329 | struct scsi_device *sdev = scpnt->device; |
330 | ||
d39eda54 | 331 | return zfcp_scsi_task_mgmt_function(sdev, FCP_TMF_LUN_RESET); |
f76af7d7 MP |
332 | } |
333 | ||
334 | static int zfcp_scsi_eh_target_reset_handler(struct scsi_cmnd *scpnt) | |
335 | { | |
674595d8 SM |
336 | struct scsi_target *starget = scsi_target(scpnt->device); |
337 | struct fc_rport *rport = starget_to_rport(starget); | |
338 | struct Scsi_Host *shost = rport_to_shost(rport); | |
339 | struct scsi_device *sdev = NULL, *tmp_sdev; | |
340 | struct zfcp_adapter *adapter = | |
341 | (struct zfcp_adapter *)shost->hostdata[0]; | |
342 | int ret; | |
343 | ||
344 | shost_for_each_device(tmp_sdev, shost) { | |
345 | if (tmp_sdev->id == starget->id) { | |
346 | sdev = tmp_sdev; | |
347 | break; | |
348 | } | |
349 | } | |
350 | if (!sdev) { | |
351 | ret = FAILED; | |
352 | zfcp_dbf_scsi_eh("tr_nosd", adapter, starget->id, ret); | |
353 | return ret; | |
354 | } | |
355 | ||
d39eda54 | 356 | ret = zfcp_scsi_task_mgmt_function(sdev, FCP_TMF_TGT_RESET); |
674595d8 SM |
357 | |
358 | /* release reference from above shost_for_each_device */ | |
359 | if (sdev) | |
360 | scsi_device_put(tmp_sdev); | |
361 | ||
362 | return ret; | |
f76af7d7 MP |
363 | } |
364 | ||
2b67fc46 | 365 | static int zfcp_scsi_eh_host_reset_handler(struct scsi_cmnd *scpnt) |
1da177e4 | 366 | { |
b62a8d9b CS |
367 | struct zfcp_scsi_dev *zfcp_sdev = sdev_to_zfcp(scpnt->device); |
368 | struct zfcp_adapter *adapter = zfcp_sdev->port->adapter; | |
df307816 | 369 | int ret = SUCCESS, fc_ret; |
1da177e4 | 370 | |
242ec145 SM |
371 | if (!(adapter->connection_features & FSF_FEATURE_NPIV_MODE)) { |
372 | zfcp_erp_port_forced_reopen_all(adapter, 0, "schrh_p"); | |
373 | zfcp_erp_wait(adapter); | |
374 | } | |
ea4a3a6a | 375 | zfcp_erp_adapter_reopen(adapter, 0, "schrh_1"); |
81654286 | 376 | zfcp_erp_wait(adapter); |
df307816 SM |
377 | fc_ret = fc_block_scsi_eh(scpnt); |
378 | if (fc_ret) | |
379 | ret = fc_ret; | |
1da177e4 | 380 | |
df307816 SM |
381 | zfcp_dbf_scsi_eh("schrh_r", adapter, ~0, ret); |
382 | return ret; | |
1da177e4 LT |
383 | } |
384 | ||
35e9111a SM |
385 | /** |
386 | * zfcp_scsi_sysfs_host_reset() - Support scsi_host sysfs attribute host_reset. | |
387 | * @shost: Pointer to Scsi_Host to perform action on. | |
388 | * @reset_type: We support %SCSI_ADAPTER_RESET but not %SCSI_FIRMWARE_RESET. | |
389 | * | |
390 | * Return: 0 on %SCSI_ADAPTER_RESET, -%EOPNOTSUPP otherwise. | |
391 | * | |
392 | * This is similar to zfcp_sysfs_adapter_failed_store(). | |
393 | */ | |
394 | static int zfcp_scsi_sysfs_host_reset(struct Scsi_Host *shost, int reset_type) | |
395 | { | |
396 | struct zfcp_adapter *adapter = | |
397 | (struct zfcp_adapter *)shost->hostdata[0]; | |
398 | int ret = 0; | |
399 | ||
400 | if (reset_type != SCSI_ADAPTER_RESET) { | |
401 | ret = -EOPNOTSUPP; | |
402 | zfcp_dbf_scsi_eh("scshr_n", adapter, ~0, ret); | |
a1dbfddd | 403 | return ret; |
35e9111a | 404 | } |
1da177e4 | 405 | |
35e9111a SM |
406 | zfcp_erp_adapter_reset_sync(adapter, "scshr_y"); |
407 | return ret; | |
1da177e4 LT |
408 | } |
409 | ||
1947c72a CS |
410 | struct scsi_transport_template *zfcp_scsi_transport_template; |
411 | ||
412 | static struct scsi_host_template zfcp_scsi_host_template = { | |
413 | .module = THIS_MODULE, | |
414 | .name = "zfcp", | |
415 | .queuecommand = zfcp_scsi_queuecommand, | |
b6a05c82 | 416 | .eh_timed_out = fc_eh_timed_out, |
1947c72a CS |
417 | .eh_abort_handler = zfcp_scsi_eh_abort_handler, |
418 | .eh_device_reset_handler = zfcp_scsi_eh_device_reset_handler, | |
419 | .eh_target_reset_handler = zfcp_scsi_eh_target_reset_handler, | |
420 | .eh_host_reset_handler = zfcp_scsi_eh_host_reset_handler, | |
421 | .slave_alloc = zfcp_scsi_slave_alloc, | |
422 | .slave_configure = zfcp_scsi_slave_configure, | |
423 | .slave_destroy = zfcp_scsi_slave_destroy, | |
db5ed4df | 424 | .change_queue_depth = scsi_change_queue_depth, |
35e9111a | 425 | .host_reset = zfcp_scsi_sysfs_host_reset, |
1947c72a CS |
426 | .proc_name = "zfcp", |
427 | .can_queue = 4096, | |
428 | .this_id = -1, | |
5fea4291 SM |
429 | .sg_tablesize = (((QDIO_MAX_ELEMENTS_PER_BUFFER - 1) |
430 | * ZFCP_QDIO_MAX_SBALS_PER_REQ) - 2), | |
431 | /* GCD, adjusted later */ | |
432 | .max_sectors = (((QDIO_MAX_ELEMENTS_PER_BUFFER - 1) | |
433 | * ZFCP_QDIO_MAX_SBALS_PER_REQ) - 2) * 8, | |
434 | /* GCD, adjusted later */ | |
b6319569 SM |
435 | /* report size limit per scatter-gather segment */ |
436 | .max_segment_size = ZFCP_QDIO_SBALE_LEN, | |
1947c72a | 437 | .dma_boundary = ZFCP_QDIO_SBALE_LEN - 1, |
1947c72a CS |
438 | .shost_attrs = zfcp_sysfs_shost_attrs, |
439 | .sdev_attrs = zfcp_sysfs_sdev_attrs, | |
c40ecc12 | 440 | .track_queue_depth = 1, |
b24bf22d | 441 | .supported_mode = MODE_INITIATOR, |
1947c72a CS |
442 | }; |
443 | ||
444 | /** | |
445 | * zfcp_scsi_adapter_register - Register SCSI and FC host with SCSI midlayer | |
446 | * @adapter: The zfcp adapter to register with the SCSI midlayer | |
447 | */ | |
448 | int zfcp_scsi_adapter_register(struct zfcp_adapter *adapter) | |
1da177e4 | 449 | { |
f76af7d7 | 450 | struct ccw_dev_id dev_id; |
1da177e4 | 451 | |
9f28745a | 452 | if (adapter->scsi_host) |
f76af7d7 | 453 | return 0; |
9f28745a | 454 | |
f76af7d7 | 455 | ccw_device_get_id(adapter->ccw_device, &dev_id); |
1da177e4 | 456 | /* register adapter as SCSI host with mid layer of SCSI stack */ |
1947c72a | 457 | adapter->scsi_host = scsi_host_alloc(&zfcp_scsi_host_template, |
1da177e4 LT |
458 | sizeof (struct zfcp_adapter *)); |
459 | if (!adapter->scsi_host) { | |
553448f6 | 460 | dev_err(&adapter->ccw_device->dev, |
ff3b24fa CS |
461 | "Registering the FCP device with the " |
462 | "SCSI stack failed\n"); | |
f76af7d7 | 463 | return -EIO; |
1da177e4 | 464 | } |
1da177e4 LT |
465 | |
466 | /* tell the SCSI stack some characteristics of this adapter */ | |
f8210e34 CS |
467 | adapter->scsi_host->max_id = 511; |
468 | adapter->scsi_host->max_lun = 0xFFFFFFFF; | |
1da177e4 | 469 | adapter->scsi_host->max_channel = 0; |
f76af7d7 | 470 | adapter->scsi_host->unique_id = dev_id.devno; |
4318e08c | 471 | adapter->scsi_host->max_cmd_len = 16; /* in struct fcp_cmnd */ |
1947c72a | 472 | adapter->scsi_host->transportt = zfcp_scsi_transport_template; |
1da177e4 | 473 | |
1da177e4 LT |
474 | adapter->scsi_host->hostdata[0] = (unsigned long) adapter; |
475 | ||
476 | if (scsi_add_host(adapter->scsi_host, &adapter->ccw_device->dev)) { | |
477 | scsi_host_put(adapter->scsi_host); | |
f76af7d7 | 478 | return -EIO; |
1da177e4 | 479 | } |
f76af7d7 MP |
480 | |
481 | return 0; | |
1da177e4 LT |
482 | } |
483 | ||
1947c72a CS |
484 | /** |
485 | * zfcp_scsi_adapter_unregister - Unregister SCSI and FC host from SCSI midlayer | |
486 | * @adapter: The zfcp adapter to unregister. | |
487 | */ | |
488 | void zfcp_scsi_adapter_unregister(struct zfcp_adapter *adapter) | |
1da177e4 LT |
489 | { |
490 | struct Scsi_Host *shost; | |
13e1e1f0 | 491 | struct zfcp_port *port; |
1da177e4 LT |
492 | |
493 | shost = adapter->scsi_host; | |
494 | if (!shost) | |
495 | return; | |
f76af7d7 | 496 | |
ecf0c772 SS |
497 | read_lock_irq(&adapter->port_list_lock); |
498 | list_for_each_entry(port, &adapter->port_list, list) | |
f3450c7b | 499 | port->rport = NULL; |
ecf0c772 | 500 | read_unlock_irq(&adapter->port_list_lock); |
f76af7d7 | 501 | |
3859f6a2 | 502 | fc_remove_host(shost); |
1da177e4 LT |
503 | scsi_remove_host(shost); |
504 | scsi_host_put(shost); | |
505 | adapter->scsi_host = NULL; | |
1da177e4 LT |
506 | } |
507 | ||
f6cd94b1 | 508 | static struct fc_host_statistics* |
d39eda54 | 509 | zfcp_scsi_init_fc_host_stats(struct zfcp_adapter *adapter) |
1da177e4 | 510 | { |
f6cd94b1 | 511 | struct fc_host_statistics *fc_stats; |
1da177e4 | 512 | |
f6cd94b1 AH |
513 | if (!adapter->fc_stats) { |
514 | fc_stats = kmalloc(sizeof(*fc_stats), GFP_KERNEL); | |
515 | if (!fc_stats) | |
516 | return NULL; | |
f3450c7b | 517 | adapter->fc_stats = fc_stats; /* freed in adapter_release */ |
f6cd94b1 AH |
518 | } |
519 | memset(adapter->fc_stats, 0, sizeof(*adapter->fc_stats)); | |
520 | return adapter->fc_stats; | |
1da177e4 LT |
521 | } |
522 | ||
d39eda54 SM |
523 | static void zfcp_scsi_adjust_fc_host_stats(struct fc_host_statistics *fc_stats, |
524 | struct fsf_qtcb_bottom_port *data, | |
525 | struct fsf_qtcb_bottom_port *old) | |
1da177e4 | 526 | { |
f76af7d7 MP |
527 | fc_stats->seconds_since_last_reset = |
528 | data->seconds_since_last_reset - old->seconds_since_last_reset; | |
f6cd94b1 AH |
529 | fc_stats->tx_frames = data->tx_frames - old->tx_frames; |
530 | fc_stats->tx_words = data->tx_words - old->tx_words; | |
531 | fc_stats->rx_frames = data->rx_frames - old->rx_frames; | |
532 | fc_stats->rx_words = data->rx_words - old->rx_words; | |
533 | fc_stats->lip_count = data->lip - old->lip; | |
534 | fc_stats->nos_count = data->nos - old->nos; | |
535 | fc_stats->error_frames = data->error_frames - old->error_frames; | |
536 | fc_stats->dumped_frames = data->dumped_frames - old->dumped_frames; | |
537 | fc_stats->link_failure_count = data->link_failure - old->link_failure; | |
538 | fc_stats->loss_of_sync_count = data->loss_of_sync - old->loss_of_sync; | |
f76af7d7 MP |
539 | fc_stats->loss_of_signal_count = |
540 | data->loss_of_signal - old->loss_of_signal; | |
541 | fc_stats->prim_seq_protocol_err_count = | |
542 | data->psp_error_counts - old->psp_error_counts; | |
543 | fc_stats->invalid_tx_word_count = | |
544 | data->invalid_tx_words - old->invalid_tx_words; | |
f6cd94b1 | 545 | fc_stats->invalid_crc_count = data->invalid_crcs - old->invalid_crcs; |
f76af7d7 MP |
546 | fc_stats->fcp_input_requests = |
547 | data->input_requests - old->input_requests; | |
548 | fc_stats->fcp_output_requests = | |
549 | data->output_requests - old->output_requests; | |
550 | fc_stats->fcp_control_requests = | |
551 | data->control_requests - old->control_requests; | |
f6cd94b1 AH |
552 | fc_stats->fcp_input_megabytes = data->input_mb - old->input_mb; |
553 | fc_stats->fcp_output_megabytes = data->output_mb - old->output_mb; | |
554 | } | |
1da177e4 | 555 | |
d39eda54 SM |
556 | static void zfcp_scsi_set_fc_host_stats(struct fc_host_statistics *fc_stats, |
557 | struct fsf_qtcb_bottom_port *data) | |
f6cd94b1 AH |
558 | { |
559 | fc_stats->seconds_since_last_reset = data->seconds_since_last_reset; | |
560 | fc_stats->tx_frames = data->tx_frames; | |
561 | fc_stats->tx_words = data->tx_words; | |
562 | fc_stats->rx_frames = data->rx_frames; | |
563 | fc_stats->rx_words = data->rx_words; | |
564 | fc_stats->lip_count = data->lip; | |
565 | fc_stats->nos_count = data->nos; | |
566 | fc_stats->error_frames = data->error_frames; | |
567 | fc_stats->dumped_frames = data->dumped_frames; | |
568 | fc_stats->link_failure_count = data->link_failure; | |
569 | fc_stats->loss_of_sync_count = data->loss_of_sync; | |
570 | fc_stats->loss_of_signal_count = data->loss_of_signal; | |
571 | fc_stats->prim_seq_protocol_err_count = data->psp_error_counts; | |
572 | fc_stats->invalid_tx_word_count = data->invalid_tx_words; | |
573 | fc_stats->invalid_crc_count = data->invalid_crcs; | |
574 | fc_stats->fcp_input_requests = data->input_requests; | |
575 | fc_stats->fcp_output_requests = data->output_requests; | |
576 | fc_stats->fcp_control_requests = data->control_requests; | |
577 | fc_stats->fcp_input_megabytes = data->input_mb; | |
578 | fc_stats->fcp_output_megabytes = data->output_mb; | |
579 | } | |
580 | ||
d39eda54 SM |
581 | static struct fc_host_statistics * |
582 | zfcp_scsi_get_fc_host_stats(struct Scsi_Host *host) | |
f6cd94b1 AH |
583 | { |
584 | struct zfcp_adapter *adapter; | |
585 | struct fc_host_statistics *fc_stats; | |
586 | struct fsf_qtcb_bottom_port *data; | |
587 | int ret; | |
588 | ||
f76af7d7 | 589 | adapter = (struct zfcp_adapter *)host->hostdata[0]; |
d39eda54 | 590 | fc_stats = zfcp_scsi_init_fc_host_stats(adapter); |
f6cd94b1 AH |
591 | if (!fc_stats) |
592 | return NULL; | |
593 | ||
ec4081c6 | 594 | data = kzalloc(sizeof(*data), GFP_KERNEL); |
f6cd94b1 AH |
595 | if (!data) |
596 | return NULL; | |
f6cd94b1 | 597 | |
564e1c86 | 598 | ret = zfcp_fsf_exchange_port_data_sync(adapter->qdio, data); |
f6cd94b1 AH |
599 | if (ret) { |
600 | kfree(data); | |
f76af7d7 | 601 | return NULL; |
f6cd94b1 AH |
602 | } |
603 | ||
604 | if (adapter->stats_reset && | |
605 | ((jiffies/HZ - adapter->stats_reset) < | |
f76af7d7 | 606 | data->seconds_since_last_reset)) |
d39eda54 SM |
607 | zfcp_scsi_adjust_fc_host_stats(fc_stats, data, |
608 | adapter->stats_reset_data); | |
f76af7d7 | 609 | else |
d39eda54 | 610 | zfcp_scsi_set_fc_host_stats(fc_stats, data); |
f6cd94b1 AH |
611 | |
612 | kfree(data); | |
613 | return fc_stats; | |
1da177e4 LT |
614 | } |
615 | ||
d39eda54 | 616 | static void zfcp_scsi_reset_fc_host_stats(struct Scsi_Host *shost) |
1da177e4 | 617 | { |
f6cd94b1 | 618 | struct zfcp_adapter *adapter; |
f76af7d7 | 619 | struct fsf_qtcb_bottom_port *data; |
f6cd94b1 | 620 | int ret; |
1da177e4 | 621 | |
f6cd94b1 | 622 | adapter = (struct zfcp_adapter *)shost->hostdata[0]; |
ec4081c6 | 623 | data = kzalloc(sizeof(*data), GFP_KERNEL); |
f6cd94b1 AH |
624 | if (!data) |
625 | return; | |
f6cd94b1 | 626 | |
564e1c86 | 627 | ret = zfcp_fsf_exchange_port_data_sync(adapter->qdio, data); |
f76af7d7 | 628 | if (ret) |
83f6d6d7 | 629 | kfree(data); |
f76af7d7 | 630 | else { |
f6cd94b1 | 631 | adapter->stats_reset = jiffies/HZ; |
f76af7d7 | 632 | kfree(adapter->stats_reset_data); |
f6cd94b1 | 633 | adapter->stats_reset_data = data; /* finally freed in |
f3450c7b | 634 | adapter_release */ |
f6cd94b1 | 635 | } |
1da177e4 LT |
636 | } |
637 | ||
d39eda54 | 638 | static void zfcp_scsi_get_host_port_state(struct Scsi_Host *shost) |
85a82392 SS |
639 | { |
640 | struct zfcp_adapter *adapter = | |
641 | (struct zfcp_adapter *)shost->hostdata[0]; | |
642 | int status = atomic_read(&adapter->status); | |
643 | ||
644 | if ((status & ZFCP_STATUS_COMMON_RUNNING) && | |
645 | !(status & ZFCP_STATUS_ADAPTER_LINK_UNPLUGGED)) | |
646 | fc_host_port_state(shost) = FC_PORTSTATE_ONLINE; | |
647 | else if (status & ZFCP_STATUS_ADAPTER_LINK_UNPLUGGED) | |
648 | fc_host_port_state(shost) = FC_PORTSTATE_LINKDOWN; | |
649 | else if (status & ZFCP_STATUS_COMMON_ERP_FAILED) | |
650 | fc_host_port_state(shost) = FC_PORTSTATE_ERROR; | |
651 | else | |
652 | fc_host_port_state(shost) = FC_PORTSTATE_UNKNOWN; | |
653 | } | |
654 | ||
d39eda54 SM |
655 | static void zfcp_scsi_set_rport_dev_loss_tmo(struct fc_rport *rport, |
656 | u32 timeout) | |
338151e0 AH |
657 | { |
658 | rport->dev_loss_tmo = timeout; | |
659 | } | |
660 | ||
a2fa0aed CS |
661 | /** |
662 | * zfcp_scsi_terminate_rport_io - Terminate all I/O on a rport | |
663 | * @rport: The FC rport where to teminate I/O | |
664 | * | |
665 | * Abort all pending SCSI commands for a port by closing the | |
835dc298 CS |
666 | * port. Using a reopen avoids a conflict with a shutdown |
667 | * overwriting a reopen. The "forced" ensures that a disappeared port | |
668 | * is not opened again as valid due to the cached plogi data in | |
669 | * non-NPIV mode. | |
a2fa0aed CS |
670 | */ |
671 | static void zfcp_scsi_terminate_rport_io(struct fc_rport *rport) | |
672 | { | |
70932935 | 673 | struct zfcp_port *port; |
ea945ff8 SS |
674 | struct Scsi_Host *shost = rport_to_shost(rport); |
675 | struct zfcp_adapter *adapter = | |
676 | (struct zfcp_adapter *)shost->hostdata[0]; | |
70932935 | 677 | |
ea945ff8 | 678 | port = zfcp_get_port_by_wwpn(adapter, rport->port_name); |
a2fa0aed | 679 | |
70932935 | 680 | if (port) { |
ea4a3a6a | 681 | zfcp_erp_port_forced_reopen(port, 0, "sctrpi1"); |
615f59e0 | 682 | put_device(&port->dev); |
96d92704 SM |
683 | } else { |
684 | zfcp_erp_port_forced_no_port_dbf( | |
685 | "sctrpin", adapter, | |
686 | rport->port_name /* zfcp_scsi_rport_register */, | |
687 | rport->port_id /* zfcp_scsi_rport_register */); | |
70932935 | 688 | } |
a2fa0aed CS |
689 | } |
690 | ||
691 | static void zfcp_scsi_rport_register(struct zfcp_port *port) | |
692 | { | |
693 | struct fc_rport_identifiers ids; | |
694 | struct fc_rport *rport; | |
695 | ||
379d6bf6 CS |
696 | if (port->rport) |
697 | return; | |
698 | ||
a2fa0aed CS |
699 | ids.node_name = port->wwnn; |
700 | ids.port_name = port->wwpn; | |
701 | ids.port_id = port->d_id; | |
702 | ids.roles = FC_RPORT_ROLE_FCP_TARGET; | |
703 | ||
fa89adba JR |
704 | zfcp_dbf_rec_trig_lock("scpaddy", port->adapter, port, NULL, |
705 | ZFCP_PSEUDO_ERP_ACTION_RPORT_ADD, | |
706 | ZFCP_PSEUDO_ERP_ACTION_RPORT_ADD); | |
a2fa0aed CS |
707 | rport = fc_remote_port_add(port->adapter->scsi_host, 0, &ids); |
708 | if (!rport) { | |
709 | dev_err(&port->adapter->ccw_device->dev, | |
710 | "Registering port 0x%016Lx failed\n", | |
711 | (unsigned long long)port->wwpn); | |
712 | return; | |
713 | } | |
714 | ||
a2fa0aed CS |
715 | rport->maxframe_size = port->maxframe_size; |
716 | rport->supported_classes = port->supported_classes; | |
717 | port->rport = rport; | |
1bf3ff02 | 718 | port->starget_id = rport->scsi_target_id; |
5a7de559 | 719 | |
1daa4eb5 | 720 | zfcp_unit_queue_scsi_scan(port); |
a2fa0aed CS |
721 | } |
722 | ||
723 | static void zfcp_scsi_rport_block(struct zfcp_port *port) | |
724 | { | |
70932935 CS |
725 | struct fc_rport *rport = port->rport; |
726 | ||
379d6bf6 | 727 | if (rport) { |
fa89adba JR |
728 | zfcp_dbf_rec_trig_lock("scpdely", port->adapter, port, NULL, |
729 | ZFCP_PSEUDO_ERP_ACTION_RPORT_DEL, | |
730 | ZFCP_PSEUDO_ERP_ACTION_RPORT_DEL); | |
70932935 | 731 | fc_remote_port_delete(rport); |
379d6bf6 CS |
732 | port->rport = NULL; |
733 | } | |
a2fa0aed CS |
734 | } |
735 | ||
736 | void zfcp_scsi_schedule_rport_register(struct zfcp_port *port) | |
737 | { | |
615f59e0 | 738 | get_device(&port->dev); |
a2fa0aed CS |
739 | port->rport_task = RPORT_ADD; |
740 | ||
4544683a | 741 | if (!queue_work(port->adapter->work_queue, &port->rport_work)) |
615f59e0 | 742 | put_device(&port->dev); |
a2fa0aed CS |
743 | } |
744 | ||
745 | void zfcp_scsi_schedule_rport_block(struct zfcp_port *port) | |
746 | { | |
615f59e0 | 747 | get_device(&port->dev); |
a2fa0aed CS |
748 | port->rport_task = RPORT_DEL; |
749 | ||
4544683a SS |
750 | if (port->rport && queue_work(port->adapter->work_queue, |
751 | &port->rport_work)) | |
a67417ab SS |
752 | return; |
753 | ||
615f59e0 | 754 | put_device(&port->dev); |
a2fa0aed CS |
755 | } |
756 | ||
757 | void zfcp_scsi_schedule_rports_block(struct zfcp_adapter *adapter) | |
758 | { | |
ecf0c772 | 759 | unsigned long flags; |
a2fa0aed CS |
760 | struct zfcp_port *port; |
761 | ||
ecf0c772 SS |
762 | read_lock_irqsave(&adapter->port_list_lock, flags); |
763 | list_for_each_entry(port, &adapter->port_list, list) | |
a2fa0aed | 764 | zfcp_scsi_schedule_rport_block(port); |
ecf0c772 | 765 | read_unlock_irqrestore(&adapter->port_list_lock, flags); |
a2fa0aed CS |
766 | } |
767 | ||
768 | void zfcp_scsi_rport_work(struct work_struct *work) | |
769 | { | |
770 | struct zfcp_port *port = container_of(work, struct zfcp_port, | |
771 | rport_work); | |
772 | ||
5c750d58 SM |
773 | set_worker_desc("zrp%c-%16llx", |
774 | (port->rport_task == RPORT_ADD) ? 'a' : 'd', | |
775 | port->wwpn); /* < WORKER_DESC_LEN=24 */ | |
a2fa0aed CS |
776 | while (port->rport_task) { |
777 | if (port->rport_task == RPORT_ADD) { | |
778 | port->rport_task = RPORT_NONE; | |
779 | zfcp_scsi_rport_register(port); | |
780 | } else { | |
781 | port->rport_task = RPORT_NONE; | |
782 | zfcp_scsi_rport_block(port); | |
783 | } | |
784 | } | |
785 | ||
615f59e0 | 786 | put_device(&port->dev); |
a2fa0aed CS |
787 | } |
788 | ||
ef3eb71d FB |
789 | /** |
790 | * zfcp_scsi_set_prot - Configure DIF/DIX support in scsi_host | |
791 | * @adapter: The adapter where to configure DIF/DIX for the SCSI host | |
792 | */ | |
793 | void zfcp_scsi_set_prot(struct zfcp_adapter *adapter) | |
794 | { | |
795 | unsigned int mask = 0; | |
796 | unsigned int data_div; | |
797 | struct Scsi_Host *shost = adapter->scsi_host; | |
798 | ||
799 | data_div = atomic_read(&adapter->status) & | |
800 | ZFCP_STATUS_ADAPTER_DATA_DIV_ENABLED; | |
801 | ||
636db60b | 802 | if ((enable_dif || zfcp_experimental_dix) && |
ef3eb71d FB |
803 | adapter->adapter_features & FSF_FEATURE_DIF_PROT_TYPE1) |
804 | mask |= SHOST_DIF_TYPE1_PROTECTION; | |
805 | ||
636db60b | 806 | if (zfcp_experimental_dix && data_div && |
ef3eb71d FB |
807 | adapter->adapter_features & FSF_FEATURE_DIX_PROT_TCPIP) { |
808 | mask |= SHOST_DIX_TYPE1_PROTECTION; | |
809 | scsi_host_set_guard(shost, SHOST_DIX_GUARD_IP); | |
86a9668a SS |
810 | shost->sg_prot_tablesize = adapter->qdio->max_sbale_per_req / 2; |
811 | shost->sg_tablesize = adapter->qdio->max_sbale_per_req / 2; | |
812 | shost->max_sectors = shost->sg_tablesize * 8; | |
ef3eb71d FB |
813 | } |
814 | ||
815 | scsi_host_set_prot(shost, mask); | |
816 | } | |
817 | ||
818 | /** | |
819 | * zfcp_scsi_dif_sense_error - Report DIF/DIX error as driver sense error | |
820 | * @scmd: The SCSI command to report the error for | |
821 | * @ascq: The ASCQ to put in the sense buffer | |
822 | * | |
823 | * See the error handling in sd_done for the sense codes used here. | |
824 | * Set DID_SOFT_ERROR to retry the request, if possible. | |
825 | */ | |
826 | void zfcp_scsi_dif_sense_error(struct scsi_cmnd *scmd, int ascq) | |
827 | { | |
828 | scsi_build_sense_buffer(1, scmd->sense_buffer, | |
829 | ILLEGAL_REQUEST, 0x10, ascq); | |
830 | set_driver_byte(scmd, DRIVER_SENSE); | |
831 | scmd->result |= SAM_STAT_CHECK_CONDITION; | |
832 | set_host_byte(scmd, DID_SOFT_ERROR); | |
833 | } | |
834 | ||
1da177e4 | 835 | struct fc_function_template zfcp_transport_functions = { |
1da177e4 LT |
836 | .show_starget_port_id = 1, |
837 | .show_starget_port_name = 1, | |
838 | .show_starget_node_name = 1, | |
3859f6a2 | 839 | .show_rport_supported_classes = 1, |
75bfc283 | 840 | .show_rport_maxframe_size = 1, |
338151e0 | 841 | .show_rport_dev_loss_tmo = 1, |
3859f6a2 AH |
842 | .show_host_node_name = 1, |
843 | .show_host_port_name = 1, | |
ad757cdf | 844 | .show_host_permanent_port_name = 1, |
3859f6a2 | 845 | .show_host_supported_classes = 1, |
0fdd2133 | 846 | .show_host_supported_fc4s = 1, |
ad757cdf | 847 | .show_host_supported_speeds = 1, |
13e1e1f0 | 848 | .show_host_maxframe_size = 1, |
3859f6a2 | 849 | .show_host_serial_number = 1, |
d39eda54 SM |
850 | .get_fc_host_stats = zfcp_scsi_get_fc_host_stats, |
851 | .reset_fc_host_stats = zfcp_scsi_reset_fc_host_stats, | |
852 | .set_rport_dev_loss_tmo = zfcp_scsi_set_rport_dev_loss_tmo, | |
853 | .get_host_port_state = zfcp_scsi_get_host_port_state, | |
a2fa0aed | 854 | .terminate_rport_io = zfcp_scsi_terminate_rport_io, |
85a82392 | 855 | .show_host_port_state = 1, |
0fdd2133 | 856 | .show_host_active_fc4s = 1, |
7c7dc196 | 857 | .bsg_request = zfcp_fc_exec_bsg_job, |
491ca442 | 858 | .bsg_timeout = zfcp_fc_timeout_bsg_job, |
f6cd94b1 AH |
859 | /* no functions registered for following dynamic attributes but |
860 | directly set by LLDD */ | |
ad757cdf | 861 | .show_host_port_type = 1, |
038d9446 | 862 | .show_host_symbolic_name = 1, |
13e1e1f0 AH |
863 | .show_host_speed = 1, |
864 | .show_host_port_id = 1, | |
7c7dc196 | 865 | .dd_bsg_size = sizeof(struct zfcp_fsf_ct_els), |
1da177e4 | 866 | }; |