1 | // SPDX-License-Identifier: GPL-2.0-only |
2 | /* |
3 | * Copyright(c) 2011 - 2012 Intel Corporation. All rights reserved. |
4 | * |
5 | * Maintained at www.Open-FCoE.org |
6 | */ |
7 | |
8 | #include <linux/module.h> |
9 | #include <linux/types.h> |
10 | #include <linux/kernel.h> |
11 | #include <linux/etherdevice.h> |
12 | #include <linux/ctype.h> |
13 | #include <linux/string.h> |
14 | |
15 | #include <scsi/fcoe_sysfs.h> |
16 | #include <scsi/libfcoe.h> |
17 | |
18 | /* |
19 | * OK to include local libfcoe.h for debug_logging, but cannot include |
20 | * <scsi/libfcoe.h> otherwise non-netdev based fcoe solutions would have |
21 | * have to include more than fcoe_sysfs.h. |
22 | */ |
23 | #include "libfcoe.h" |
24 | |
25 | static atomic_t ctlr_num; |
26 | static atomic_t fcf_num; |
27 | |
28 | /* |
29 | * fcoe_fcf_dev_loss_tmo: the default number of seconds that fcoe sysfs |
30 | * should insulate the loss of a fcf. |
31 | */ |
32 | static unsigned int fcoe_fcf_dev_loss_tmo = 1800; /* seconds */ |
33 | |
34 | module_param_named(fcf_dev_loss_tmo, fcoe_fcf_dev_loss_tmo, |
35 | uint, S_IRUGO|S_IWUSR); |
36 | MODULE_PARM_DESC(fcf_dev_loss_tmo, |
37 | "Maximum number of seconds that libfcoe should" |
38 | " insulate the loss of a fcf. Once this value is" |
39 | " exceeded, the fcf is removed." ); |
40 | |
41 | /* |
42 | * These are used by the fcoe_*_show_function routines, they |
43 | * are intentionally placed in the .c file as they're not intended |
44 | * for use throughout the code. |
45 | */ |
46 | #define fcoe_ctlr_id(x) \ |
47 | ((x)->id) |
48 | #define fcoe_ctlr_work_q_name(x) \ |
49 | ((x)->work_q_name) |
50 | #define fcoe_ctlr_work_q(x) \ |
51 | ((x)->work_q) |
52 | #define fcoe_ctlr_devloss_work_q_name(x) \ |
53 | ((x)->devloss_work_q_name) |
54 | #define fcoe_ctlr_devloss_work_q(x) \ |
55 | ((x)->devloss_work_q) |
56 | #define fcoe_ctlr_mode(x) \ |
57 | ((x)->mode) |
58 | #define fcoe_ctlr_fcf_dev_loss_tmo(x) \ |
59 | ((x)->fcf_dev_loss_tmo) |
60 | #define fcoe_ctlr_link_fail(x) \ |
61 | ((x)->lesb.lesb_link_fail) |
62 | #define fcoe_ctlr_vlink_fail(x) \ |
63 | ((x)->lesb.lesb_vlink_fail) |
64 | #define fcoe_ctlr_miss_fka(x) \ |
65 | ((x)->lesb.lesb_miss_fka) |
66 | #define fcoe_ctlr_symb_err(x) \ |
67 | ((x)->lesb.lesb_symb_err) |
68 | #define fcoe_ctlr_err_block(x) \ |
69 | ((x)->lesb.lesb_err_block) |
70 | #define fcoe_ctlr_fcs_error(x) \ |
71 | ((x)->lesb.lesb_fcs_error) |
72 | #define fcoe_ctlr_enabled(x) \ |
73 | ((x)->enabled) |
74 | #define fcoe_fcf_state(x) \ |
75 | ((x)->state) |
76 | #define fcoe_fcf_fabric_name(x) \ |
77 | ((x)->fabric_name) |
78 | #define fcoe_fcf_switch_name(x) \ |
79 | ((x)->switch_name) |
80 | #define fcoe_fcf_fc_map(x) \ |
81 | ((x)->fc_map) |
82 | #define fcoe_fcf_vfid(x) \ |
83 | ((x)->vfid) |
84 | #define fcoe_fcf_mac(x) \ |
85 | ((x)->mac) |
86 | #define fcoe_fcf_priority(x) \ |
87 | ((x)->priority) |
88 | #define fcoe_fcf_fka_period(x) \ |
89 | ((x)->fka_period) |
90 | #define fcoe_fcf_dev_loss_tmo(x) \ |
91 | ((x)->dev_loss_tmo) |
92 | #define fcoe_fcf_selected(x) \ |
93 | ((x)->selected) |
94 | #define fcoe_fcf_vlan_id(x) \ |
95 | ((x)->vlan_id) |
96 | |
97 | /* |
98 | * dev_loss_tmo attribute |
99 | */ |
100 | static int fcoe_str_to_dev_loss(const char *buf, unsigned long *val) |
101 | { |
102 | int ret; |
103 | |
104 | ret = kstrtoul(s: buf, base: 0, res: val); |
105 | if (ret) |
106 | return -EINVAL; |
107 | /* |
108 | * Check for overflow; dev_loss_tmo is u32 |
109 | */ |
110 | if (*val > UINT_MAX) |
111 | return -EINVAL; |
112 | |
113 | return 0; |
114 | } |
115 | |
116 | static int fcoe_fcf_set_dev_loss_tmo(struct fcoe_fcf_device *fcf, |
117 | unsigned long val) |
118 | { |
119 | if ((fcf->state == FCOE_FCF_STATE_UNKNOWN) || |
120 | (fcf->state == FCOE_FCF_STATE_DISCONNECTED) || |
121 | (fcf->state == FCOE_FCF_STATE_DELETED)) |
122 | return -EBUSY; |
123 | /* |
124 | * Check for overflow; dev_loss_tmo is u32 |
125 | */ |
126 | if (val > UINT_MAX) |
127 | return -EINVAL; |
128 | |
129 | fcoe_fcf_dev_loss_tmo(fcf) = val; |
130 | return 0; |
131 | } |
132 | |
133 | #define FCOE_DEVICE_ATTR(_prefix, _name, _mode, _show, _store) \ |
134 | struct device_attribute device_attr_fcoe_##_prefix##_##_name = \ |
135 | __ATTR(_name, _mode, _show, _store) |
136 | |
137 | #define fcoe_ctlr_show_function(field, format_string, sz, cast) \ |
138 | static ssize_t show_fcoe_ctlr_device_##field(struct device *dev, \ |
139 | struct device_attribute *attr, \ |
140 | char *buf) \ |
141 | { \ |
142 | struct fcoe_ctlr_device *ctlr = dev_to_ctlr(dev); \ |
143 | if (ctlr->f->get_fcoe_ctlr_##field) \ |
144 | ctlr->f->get_fcoe_ctlr_##field(ctlr); \ |
145 | return snprintf(buf, sz, format_string, \ |
146 | cast fcoe_ctlr_##field(ctlr)); \ |
147 | } |
148 | |
149 | #define fcoe_fcf_show_function(field, format_string, sz, cast) \ |
150 | static ssize_t show_fcoe_fcf_device_##field(struct device *dev, \ |
151 | struct device_attribute *attr, \ |
152 | char *buf) \ |
153 | { \ |
154 | struct fcoe_fcf_device *fcf = dev_to_fcf(dev); \ |
155 | struct fcoe_ctlr_device *ctlr = fcoe_fcf_dev_to_ctlr_dev(fcf); \ |
156 | if (ctlr->f->get_fcoe_fcf_##field) \ |
157 | ctlr->f->get_fcoe_fcf_##field(fcf); \ |
158 | return snprintf(buf, sz, format_string, \ |
159 | cast fcoe_fcf_##field(fcf)); \ |
160 | } |
161 | |
162 | #define fcoe_ctlr_private_show_function(field, format_string, sz, cast) \ |
163 | static ssize_t show_fcoe_ctlr_device_##field(struct device *dev, \ |
164 | struct device_attribute *attr, \ |
165 | char *buf) \ |
166 | { \ |
167 | struct fcoe_ctlr_device *ctlr = dev_to_ctlr(dev); \ |
168 | return snprintf(buf, sz, format_string, cast fcoe_ctlr_##field(ctlr)); \ |
169 | } |
170 | |
171 | #define fcoe_fcf_private_show_function(field, format_string, sz, cast) \ |
172 | static ssize_t show_fcoe_fcf_device_##field(struct device *dev, \ |
173 | struct device_attribute *attr, \ |
174 | char *buf) \ |
175 | { \ |
176 | struct fcoe_fcf_device *fcf = dev_to_fcf(dev); \ |
177 | return snprintf(buf, sz, format_string, cast fcoe_fcf_##field(fcf)); \ |
178 | } |
179 | |
180 | #define fcoe_ctlr_private_rd_attr(field, format_string, sz) \ |
181 | fcoe_ctlr_private_show_function(field, format_string, sz, ) \ |
182 | static FCOE_DEVICE_ATTR(ctlr, field, S_IRUGO, \ |
183 | show_fcoe_ctlr_device_##field, NULL) |
184 | |
185 | #define fcoe_ctlr_rd_attr(field, format_string, sz) \ |
186 | fcoe_ctlr_show_function(field, format_string, sz, ) \ |
187 | static FCOE_DEVICE_ATTR(ctlr, field, S_IRUGO, \ |
188 | show_fcoe_ctlr_device_##field, NULL) |
189 | |
190 | #define fcoe_fcf_rd_attr(field, format_string, sz) \ |
191 | fcoe_fcf_show_function(field, format_string, sz, ) \ |
192 | static FCOE_DEVICE_ATTR(fcf, field, S_IRUGO, \ |
193 | show_fcoe_fcf_device_##field, NULL) |
194 | |
195 | #define fcoe_fcf_private_rd_attr(field, format_string, sz) \ |
196 | fcoe_fcf_private_show_function(field, format_string, sz, ) \ |
197 | static FCOE_DEVICE_ATTR(fcf, field, S_IRUGO, \ |
198 | show_fcoe_fcf_device_##field, NULL) |
199 | |
200 | #define fcoe_ctlr_private_rd_attr_cast(field, format_string, sz, cast) \ |
201 | fcoe_ctlr_private_show_function(field, format_string, sz, (cast)) \ |
202 | static FCOE_DEVICE_ATTR(ctlr, field, S_IRUGO, \ |
203 | show_fcoe_ctlr_device_##field, NULL) |
204 | |
205 | #define fcoe_fcf_private_rd_attr_cast(field, format_string, sz, cast) \ |
206 | fcoe_fcf_private_show_function(field, format_string, sz, (cast)) \ |
207 | static FCOE_DEVICE_ATTR(fcf, field, S_IRUGO, \ |
208 | show_fcoe_fcf_device_##field, NULL) |
209 | |
210 | #define fcoe_enum_name_search(title, table_type, table) \ |
211 | static const char *get_fcoe_##title##_name(enum table_type table_key) \ |
212 | { \ |
213 | if (table_key < 0 || table_key >= ARRAY_SIZE(table)) \ |
214 | return NULL; \ |
215 | return table[table_key]; \ |
216 | } |
217 | |
218 | static const char * const fip_conn_type_names[] = { |
219 | [ FIP_CONN_TYPE_UNKNOWN ] = "Unknown" , |
220 | [ FIP_CONN_TYPE_FABRIC ] = "Fabric" , |
221 | [ FIP_CONN_TYPE_VN2VN ] = "VN2VN" , |
222 | }; |
223 | fcoe_enum_name_search(ctlr_mode, fip_conn_type, fip_conn_type_names) |
224 | |
225 | static char *fcf_state_names[] = { |
226 | [ FCOE_FCF_STATE_UNKNOWN ] = "Unknown" , |
227 | [ FCOE_FCF_STATE_DISCONNECTED ] = "Disconnected" , |
228 | [ FCOE_FCF_STATE_CONNECTED ] = "Connected" , |
229 | }; |
230 | fcoe_enum_name_search(fcf_state, fcf_state, fcf_state_names) |
231 | #define FCOE_FCF_STATE_MAX_NAMELEN 50 |
232 | |
233 | static ssize_t show_fcf_state(struct device *dev, |
234 | struct device_attribute *attr, |
235 | char *buf) |
236 | { |
237 | struct fcoe_fcf_device *fcf = dev_to_fcf(dev); |
238 | const char *name; |
239 | name = get_fcoe_fcf_state_name(table_key: fcf->state); |
240 | if (!name) |
241 | return -EINVAL; |
242 | return snprintf(buf, FCOE_FCF_STATE_MAX_NAMELEN, fmt: "%s\n" , name); |
243 | } |
244 | static FCOE_DEVICE_ATTR(fcf, state, S_IRUGO, show_fcf_state, NULL); |
245 | |
246 | #define FCOE_MAX_MODENAME_LEN 20 |
247 | static ssize_t show_ctlr_mode(struct device *dev, |
248 | struct device_attribute *attr, |
249 | char *buf) |
250 | { |
251 | struct fcoe_ctlr_device *ctlr = dev_to_ctlr(dev); |
252 | const char *name; |
253 | |
254 | name = get_fcoe_ctlr_mode_name(table_key: ctlr->mode); |
255 | if (!name) |
256 | return -EINVAL; |
257 | return snprintf(buf, FCOE_MAX_MODENAME_LEN, |
258 | fmt: "%s\n" , name); |
259 | } |
260 | |
261 | static ssize_t store_ctlr_mode(struct device *dev, |
262 | struct device_attribute *attr, |
263 | const char *buf, size_t count) |
264 | { |
265 | struct fcoe_ctlr_device *ctlr = dev_to_ctlr(dev); |
266 | int res; |
267 | |
268 | if (count > FCOE_MAX_MODENAME_LEN) |
269 | return -EINVAL; |
270 | |
271 | |
272 | switch (ctlr->enabled) { |
273 | case FCOE_CTLR_ENABLED: |
274 | LIBFCOE_SYSFS_DBG(ctlr, "Cannot change mode when enabled.\n" ); |
275 | return -EBUSY; |
276 | case FCOE_CTLR_DISABLED: |
277 | if (!ctlr->f->set_fcoe_ctlr_mode) { |
278 | LIBFCOE_SYSFS_DBG(ctlr, |
279 | "Mode change not supported by LLD.\n" ); |
280 | return -ENOTSUPP; |
281 | } |
282 | |
283 | res = sysfs_match_string(fip_conn_type_names, buf); |
284 | if (res < 0 || res == FIP_CONN_TYPE_UNKNOWN) { |
285 | LIBFCOE_SYSFS_DBG(ctlr, "Unknown mode %s provided.\n" , |
286 | buf); |
287 | return -EINVAL; |
288 | } |
289 | ctlr->mode = res; |
290 | |
291 | ctlr->f->set_fcoe_ctlr_mode(ctlr); |
292 | LIBFCOE_SYSFS_DBG(ctlr, "Mode changed to %s.\n" , buf); |
293 | |
294 | return count; |
295 | case FCOE_CTLR_UNUSED: |
296 | default: |
297 | LIBFCOE_SYSFS_DBG(ctlr, "Mode change not supported.\n" ); |
298 | return -ENOTSUPP; |
299 | } |
300 | } |
301 | |
302 | static FCOE_DEVICE_ATTR(ctlr, mode, S_IRUGO | S_IWUSR, |
303 | show_ctlr_mode, store_ctlr_mode); |
304 | |
305 | static ssize_t store_ctlr_enabled(struct device *dev, |
306 | struct device_attribute *attr, |
307 | const char *buf, size_t count) |
308 | { |
309 | struct fcoe_ctlr_device *ctlr = dev_to_ctlr(dev); |
310 | bool enabled; |
311 | int rc; |
312 | |
313 | if (*buf == '1') |
314 | enabled = true; |
315 | else if (*buf == '0') |
316 | enabled = false; |
317 | else |
318 | return -EINVAL; |
319 | |
320 | switch (ctlr->enabled) { |
321 | case FCOE_CTLR_ENABLED: |
322 | if (enabled) |
323 | return count; |
324 | ctlr->enabled = FCOE_CTLR_DISABLED; |
325 | break; |
326 | case FCOE_CTLR_DISABLED: |
327 | if (!enabled) |
328 | return count; |
329 | ctlr->enabled = FCOE_CTLR_ENABLED; |
330 | break; |
331 | case FCOE_CTLR_UNUSED: |
332 | return -ENOTSUPP; |
333 | } |
334 | |
335 | rc = ctlr->f->set_fcoe_ctlr_enabled(ctlr); |
336 | if (rc) |
337 | return rc; |
338 | |
339 | return count; |
340 | } |
341 | |
342 | static char *ctlr_enabled_state_names[] = { |
343 | [ FCOE_CTLR_ENABLED ] = "1" , |
344 | [ FCOE_CTLR_DISABLED ] = "0" , |
345 | }; |
346 | fcoe_enum_name_search(ctlr_enabled_state, ctlr_enabled_state, |
347 | ctlr_enabled_state_names) |
348 | #define FCOE_CTLR_ENABLED_MAX_NAMELEN 50 |
349 | |
350 | static ssize_t show_ctlr_enabled_state(struct device *dev, |
351 | struct device_attribute *attr, |
352 | char *buf) |
353 | { |
354 | struct fcoe_ctlr_device *ctlr = dev_to_ctlr(dev); |
355 | const char *name; |
356 | |
357 | name = get_fcoe_ctlr_enabled_state_name(table_key: ctlr->enabled); |
358 | if (!name) |
359 | return -EINVAL; |
360 | return snprintf(buf, FCOE_CTLR_ENABLED_MAX_NAMELEN, |
361 | fmt: "%s\n" , name); |
362 | } |
363 | |
364 | static FCOE_DEVICE_ATTR(ctlr, enabled, S_IRUGO | S_IWUSR, |
365 | show_ctlr_enabled_state, |
366 | store_ctlr_enabled); |
367 | |
368 | static ssize_t store_ctlr_fip_resp(struct device *dev, |
369 | struct device_attribute *attr, |
370 | const char *buf, size_t count) |
371 | { |
372 | struct fcoe_ctlr_device *ctlr = dev_to_ctlr(dev); |
373 | struct fcoe_ctlr *fip = fcoe_ctlr_device_priv(ctlr); |
374 | |
375 | mutex_lock(&fip->ctlr_mutex); |
376 | if ((buf[1] == '\0') || ((buf[1] == '\n') && (buf[2] == '\0'))) { |
377 | if (buf[0] == '1') { |
378 | fip->fip_resp = 1; |
379 | mutex_unlock(lock: &fip->ctlr_mutex); |
380 | return count; |
381 | } |
382 | if (buf[0] == '0') { |
383 | fip->fip_resp = 0; |
384 | mutex_unlock(lock: &fip->ctlr_mutex); |
385 | return count; |
386 | } |
387 | } |
388 | mutex_unlock(lock: &fip->ctlr_mutex); |
389 | return -EINVAL; |
390 | } |
391 | |
392 | static ssize_t show_ctlr_fip_resp(struct device *dev, |
393 | struct device_attribute *attr, |
394 | char *buf) |
395 | { |
396 | struct fcoe_ctlr_device *ctlr = dev_to_ctlr(dev); |
397 | struct fcoe_ctlr *fip = fcoe_ctlr_device_priv(ctlr); |
398 | |
399 | return sprintf(buf, fmt: "%d\n" , fip->fip_resp ? 1 : 0); |
400 | } |
401 | |
402 | static FCOE_DEVICE_ATTR(ctlr, fip_vlan_responder, S_IRUGO | S_IWUSR, |
403 | show_ctlr_fip_resp, |
404 | store_ctlr_fip_resp); |
405 | |
406 | static ssize_t |
407 | fcoe_ctlr_var_store(u32 *var, const char *buf, size_t count) |
408 | { |
409 | int err; |
410 | unsigned long v; |
411 | |
412 | err = kstrtoul(s: buf, base: 10, res: &v); |
413 | if (err || v > UINT_MAX) |
414 | return -EINVAL; |
415 | |
416 | *var = v; |
417 | |
418 | return count; |
419 | } |
420 | |
421 | static ssize_t store_ctlr_r_a_tov(struct device *dev, |
422 | struct device_attribute *attr, |
423 | const char *buf, size_t count) |
424 | { |
425 | struct fcoe_ctlr_device *ctlr_dev = dev_to_ctlr(dev); |
426 | struct fcoe_ctlr *ctlr = fcoe_ctlr_device_priv(ctlr: ctlr_dev); |
427 | |
428 | if (ctlr_dev->enabled == FCOE_CTLR_ENABLED) |
429 | return -EBUSY; |
430 | if (ctlr_dev->enabled == FCOE_CTLR_DISABLED) |
431 | return fcoe_ctlr_var_store(var: &ctlr->lp->r_a_tov, buf, count); |
432 | return -ENOTSUPP; |
433 | } |
434 | |
435 | static ssize_t show_ctlr_r_a_tov(struct device *dev, |
436 | struct device_attribute *attr, |
437 | char *buf) |
438 | { |
439 | struct fcoe_ctlr_device *ctlr_dev = dev_to_ctlr(dev); |
440 | struct fcoe_ctlr *ctlr = fcoe_ctlr_device_priv(ctlr: ctlr_dev); |
441 | |
442 | return sprintf(buf, fmt: "%d\n" , ctlr->lp->r_a_tov); |
443 | } |
444 | |
445 | static FCOE_DEVICE_ATTR(ctlr, r_a_tov, S_IRUGO | S_IWUSR, |
446 | show_ctlr_r_a_tov, store_ctlr_r_a_tov); |
447 | |
448 | static ssize_t store_ctlr_e_d_tov(struct device *dev, |
449 | struct device_attribute *attr, |
450 | const char *buf, size_t count) |
451 | { |
452 | struct fcoe_ctlr_device *ctlr_dev = dev_to_ctlr(dev); |
453 | struct fcoe_ctlr *ctlr = fcoe_ctlr_device_priv(ctlr: ctlr_dev); |
454 | |
455 | if (ctlr_dev->enabled == FCOE_CTLR_ENABLED) |
456 | return -EBUSY; |
457 | if (ctlr_dev->enabled == FCOE_CTLR_DISABLED) |
458 | return fcoe_ctlr_var_store(var: &ctlr->lp->e_d_tov, buf, count); |
459 | return -ENOTSUPP; |
460 | } |
461 | |
462 | static ssize_t show_ctlr_e_d_tov(struct device *dev, |
463 | struct device_attribute *attr, |
464 | char *buf) |
465 | { |
466 | struct fcoe_ctlr_device *ctlr_dev = dev_to_ctlr(dev); |
467 | struct fcoe_ctlr *ctlr = fcoe_ctlr_device_priv(ctlr: ctlr_dev); |
468 | |
469 | return sprintf(buf, fmt: "%d\n" , ctlr->lp->e_d_tov); |
470 | } |
471 | |
472 | static FCOE_DEVICE_ATTR(ctlr, e_d_tov, S_IRUGO | S_IWUSR, |
473 | show_ctlr_e_d_tov, store_ctlr_e_d_tov); |
474 | |
475 | static ssize_t |
476 | store_private_fcoe_ctlr_fcf_dev_loss_tmo(struct device *dev, |
477 | struct device_attribute *attr, |
478 | const char *buf, size_t count) |
479 | { |
480 | struct fcoe_ctlr_device *ctlr = dev_to_ctlr(dev); |
481 | struct fcoe_fcf_device *fcf; |
482 | unsigned long val; |
483 | int rc; |
484 | |
485 | rc = fcoe_str_to_dev_loss(buf, val: &val); |
486 | if (rc) |
487 | return rc; |
488 | |
489 | fcoe_ctlr_fcf_dev_loss_tmo(ctlr) = val; |
490 | mutex_lock(&ctlr->lock); |
491 | list_for_each_entry(fcf, &ctlr->fcfs, peers) |
492 | fcoe_fcf_set_dev_loss_tmo(fcf, val); |
493 | mutex_unlock(lock: &ctlr->lock); |
494 | return count; |
495 | } |
496 | fcoe_ctlr_private_show_function(fcf_dev_loss_tmo, "%d\n" , 20, ); |
497 | static FCOE_DEVICE_ATTR(ctlr, fcf_dev_loss_tmo, S_IRUGO | S_IWUSR, |
498 | show_fcoe_ctlr_device_fcf_dev_loss_tmo, |
499 | store_private_fcoe_ctlr_fcf_dev_loss_tmo); |
500 | |
501 | /* Link Error Status Block (LESB) */ |
502 | fcoe_ctlr_rd_attr(link_fail, "%u\n" , 20); |
503 | fcoe_ctlr_rd_attr(vlink_fail, "%u\n" , 20); |
504 | fcoe_ctlr_rd_attr(miss_fka, "%u\n" , 20); |
505 | fcoe_ctlr_rd_attr(symb_err, "%u\n" , 20); |
506 | fcoe_ctlr_rd_attr(err_block, "%u\n" , 20); |
507 | fcoe_ctlr_rd_attr(fcs_error, "%u\n" , 20); |
508 | |
509 | fcoe_fcf_private_rd_attr_cast(fabric_name, "0x%llx\n" , 20, unsigned long long); |
510 | fcoe_fcf_private_rd_attr_cast(switch_name, "0x%llx\n" , 20, unsigned long long); |
511 | fcoe_fcf_private_rd_attr(priority, "%u\n" , 20); |
512 | fcoe_fcf_private_rd_attr(fc_map, "0x%x\n" , 20); |
513 | fcoe_fcf_private_rd_attr(vfid, "%u\n" , 20); |
514 | fcoe_fcf_private_rd_attr(mac, "%pM\n" , 20); |
515 | fcoe_fcf_private_rd_attr(fka_period, "%u\n" , 20); |
516 | fcoe_fcf_rd_attr(selected, "%u\n" , 20); |
517 | fcoe_fcf_rd_attr(vlan_id, "%u\n" , 20); |
518 | |
519 | fcoe_fcf_private_show_function(dev_loss_tmo, "%d\n" , 20, ) |
520 | static ssize_t |
521 | store_fcoe_fcf_dev_loss_tmo(struct device *dev, struct device_attribute *attr, |
522 | const char *buf, size_t count) |
523 | { |
524 | struct fcoe_fcf_device *fcf = dev_to_fcf(dev); |
525 | unsigned long val; |
526 | int rc; |
527 | |
528 | rc = fcoe_str_to_dev_loss(buf, val: &val); |
529 | if (rc) |
530 | return rc; |
531 | |
532 | rc = fcoe_fcf_set_dev_loss_tmo(fcf, val); |
533 | if (rc) |
534 | return rc; |
535 | return count; |
536 | } |
537 | static FCOE_DEVICE_ATTR(fcf, dev_loss_tmo, S_IRUGO | S_IWUSR, |
538 | show_fcoe_fcf_device_dev_loss_tmo, |
539 | store_fcoe_fcf_dev_loss_tmo); |
540 | |
541 | static struct attribute *fcoe_ctlr_lesb_attrs[] = { |
542 | &device_attr_fcoe_ctlr_link_fail.attr, |
543 | &device_attr_fcoe_ctlr_vlink_fail.attr, |
544 | &device_attr_fcoe_ctlr_miss_fka.attr, |
545 | &device_attr_fcoe_ctlr_symb_err.attr, |
546 | &device_attr_fcoe_ctlr_err_block.attr, |
547 | &device_attr_fcoe_ctlr_fcs_error.attr, |
548 | NULL, |
549 | }; |
550 | |
551 | static struct attribute_group fcoe_ctlr_lesb_attr_group = { |
552 | .name = "lesb" , |
553 | .attrs = fcoe_ctlr_lesb_attrs, |
554 | }; |
555 | |
556 | static struct attribute *fcoe_ctlr_attrs[] = { |
557 | &device_attr_fcoe_ctlr_fip_vlan_responder.attr, |
558 | &device_attr_fcoe_ctlr_fcf_dev_loss_tmo.attr, |
559 | &device_attr_fcoe_ctlr_r_a_tov.attr, |
560 | &device_attr_fcoe_ctlr_e_d_tov.attr, |
561 | &device_attr_fcoe_ctlr_enabled.attr, |
562 | &device_attr_fcoe_ctlr_mode.attr, |
563 | NULL, |
564 | }; |
565 | |
566 | static struct attribute_group fcoe_ctlr_attr_group = { |
567 | .attrs = fcoe_ctlr_attrs, |
568 | }; |
569 | |
570 | static const struct attribute_group *fcoe_ctlr_attr_groups[] = { |
571 | &fcoe_ctlr_attr_group, |
572 | &fcoe_ctlr_lesb_attr_group, |
573 | NULL, |
574 | }; |
575 | |
576 | static struct attribute *fcoe_fcf_attrs[] = { |
577 | &device_attr_fcoe_fcf_fabric_name.attr, |
578 | &device_attr_fcoe_fcf_switch_name.attr, |
579 | &device_attr_fcoe_fcf_dev_loss_tmo.attr, |
580 | &device_attr_fcoe_fcf_fc_map.attr, |
581 | &device_attr_fcoe_fcf_vfid.attr, |
582 | &device_attr_fcoe_fcf_mac.attr, |
583 | &device_attr_fcoe_fcf_priority.attr, |
584 | &device_attr_fcoe_fcf_fka_period.attr, |
585 | &device_attr_fcoe_fcf_state.attr, |
586 | &device_attr_fcoe_fcf_selected.attr, |
587 | &device_attr_fcoe_fcf_vlan_id.attr, |
588 | NULL |
589 | }; |
590 | |
591 | static struct attribute_group fcoe_fcf_attr_group = { |
592 | .attrs = fcoe_fcf_attrs, |
593 | }; |
594 | |
595 | static const struct attribute_group *fcoe_fcf_attr_groups[] = { |
596 | &fcoe_fcf_attr_group, |
597 | NULL, |
598 | }; |
599 | |
600 | static const struct bus_type fcoe_bus_type; |
601 | |
602 | static int fcoe_bus_match(struct device *dev, |
603 | struct device_driver *drv) |
604 | { |
605 | if (dev->bus == &fcoe_bus_type) |
606 | return 1; |
607 | return 0; |
608 | } |
609 | |
610 | /** |
611 | * fcoe_ctlr_device_release() - Release the FIP ctlr memory |
612 | * @dev: Pointer to the FIP ctlr's embedded device |
613 | * |
614 | * Called when the last FIP ctlr reference is released. |
615 | */ |
616 | static void fcoe_ctlr_device_release(struct device *dev) |
617 | { |
618 | struct fcoe_ctlr_device *ctlr = dev_to_ctlr(dev); |
619 | kfree(objp: ctlr); |
620 | } |
621 | |
622 | /** |
623 | * fcoe_fcf_device_release() - Release the FIP fcf memory |
624 | * @dev: Pointer to the fcf's embedded device |
625 | * |
626 | * Called when the last FIP fcf reference is released. |
627 | */ |
628 | static void fcoe_fcf_device_release(struct device *dev) |
629 | { |
630 | struct fcoe_fcf_device *fcf = dev_to_fcf(dev); |
631 | kfree(objp: fcf); |
632 | } |
633 | |
634 | static const struct device_type fcoe_ctlr_device_type = { |
635 | .name = "fcoe_ctlr" , |
636 | .groups = fcoe_ctlr_attr_groups, |
637 | .release = fcoe_ctlr_device_release, |
638 | }; |
639 | |
640 | static const struct device_type fcoe_fcf_device_type = { |
641 | .name = "fcoe_fcf" , |
642 | .groups = fcoe_fcf_attr_groups, |
643 | .release = fcoe_fcf_device_release, |
644 | }; |
645 | |
646 | static ssize_t ctlr_create_store(const struct bus_type *bus, const char *buf, |
647 | size_t count) |
648 | { |
649 | return fcoe_ctlr_create_store(buf, count); |
650 | } |
651 | static BUS_ATTR_WO(ctlr_create); |
652 | |
653 | static ssize_t ctlr_destroy_store(const struct bus_type *bus, const char *buf, |
654 | size_t count) |
655 | { |
656 | return fcoe_ctlr_destroy_store(buf, count); |
657 | } |
658 | static BUS_ATTR_WO(ctlr_destroy); |
659 | |
660 | static struct attribute *fcoe_bus_attrs[] = { |
661 | &bus_attr_ctlr_create.attr, |
662 | &bus_attr_ctlr_destroy.attr, |
663 | NULL, |
664 | }; |
665 | ATTRIBUTE_GROUPS(fcoe_bus); |
666 | |
667 | static const struct bus_type fcoe_bus_type = { |
668 | .name = "fcoe" , |
669 | .match = &fcoe_bus_match, |
670 | .bus_groups = fcoe_bus_groups, |
671 | }; |
672 | |
673 | /** |
674 | * fcoe_ctlr_device_flush_work() - Flush a FIP ctlr's workqueue |
675 | * @ctlr: Pointer to the FIP ctlr whose workqueue is to be flushed |
676 | */ |
677 | static void fcoe_ctlr_device_flush_work(struct fcoe_ctlr_device *ctlr) |
678 | { |
679 | if (!fcoe_ctlr_work_q(ctlr)) { |
680 | printk(KERN_ERR |
681 | "ERROR: FIP Ctlr '%d' attempted to flush work, " |
682 | "when no workqueue created.\n" , ctlr->id); |
683 | dump_stack(); |
684 | return; |
685 | } |
686 | |
687 | flush_workqueue(fcoe_ctlr_work_q(ctlr)); |
688 | } |
689 | |
690 | /** |
691 | * fcoe_ctlr_device_queue_work() - Schedule work for a FIP ctlr's workqueue |
692 | * @ctlr: Pointer to the FIP ctlr who owns the devloss workqueue |
693 | * @work: Work to queue for execution |
694 | * |
695 | * Return value: |
696 | * 1 on success / 0 already queued / < 0 for error |
697 | */ |
698 | static int fcoe_ctlr_device_queue_work(struct fcoe_ctlr_device *ctlr, |
699 | struct work_struct *work) |
700 | { |
701 | if (unlikely(!fcoe_ctlr_work_q(ctlr))) { |
702 | printk(KERN_ERR |
703 | "ERROR: FIP Ctlr '%d' attempted to queue work, " |
704 | "when no workqueue created.\n" , ctlr->id); |
705 | dump_stack(); |
706 | |
707 | return -EINVAL; |
708 | } |
709 | |
710 | return queue_work(fcoe_ctlr_work_q(ctlr), work); |
711 | } |
712 | |
713 | /** |
714 | * fcoe_ctlr_device_flush_devloss() - Flush a FIP ctlr's devloss workqueue |
715 | * @ctlr: Pointer to FIP ctlr whose workqueue is to be flushed |
716 | */ |
717 | static void fcoe_ctlr_device_flush_devloss(struct fcoe_ctlr_device *ctlr) |
718 | { |
719 | if (!fcoe_ctlr_devloss_work_q(ctlr)) { |
720 | printk(KERN_ERR |
721 | "ERROR: FIP Ctlr '%d' attempted to flush work, " |
722 | "when no workqueue created.\n" , ctlr->id); |
723 | dump_stack(); |
724 | return; |
725 | } |
726 | |
727 | flush_workqueue(fcoe_ctlr_devloss_work_q(ctlr)); |
728 | } |
729 | |
730 | /** |
731 | * fcoe_ctlr_device_queue_devloss_work() - Schedule work for a FIP ctlr's devloss workqueue |
732 | * @ctlr: Pointer to the FIP ctlr who owns the devloss workqueue |
733 | * @work: Work to queue for execution |
734 | * @delay: jiffies to delay the work queuing |
735 | * |
736 | * Return value: |
737 | * 1 on success / 0 already queued / < 0 for error |
738 | */ |
739 | static int fcoe_ctlr_device_queue_devloss_work(struct fcoe_ctlr_device *ctlr, |
740 | struct delayed_work *work, |
741 | unsigned long delay) |
742 | { |
743 | if (unlikely(!fcoe_ctlr_devloss_work_q(ctlr))) { |
744 | printk(KERN_ERR |
745 | "ERROR: FIP Ctlr '%d' attempted to queue work, " |
746 | "when no workqueue created.\n" , ctlr->id); |
747 | dump_stack(); |
748 | |
749 | return -EINVAL; |
750 | } |
751 | |
752 | return queue_delayed_work(fcoe_ctlr_devloss_work_q(ctlr), dwork: work, delay); |
753 | } |
754 | |
755 | static int fcoe_fcf_device_match(struct fcoe_fcf_device *new, |
756 | struct fcoe_fcf_device *old) |
757 | { |
758 | if (new->switch_name == old->switch_name && |
759 | new->fabric_name == old->fabric_name && |
760 | new->fc_map == old->fc_map && |
761 | ether_addr_equal(addr1: new->mac, addr2: old->mac)) |
762 | return 1; |
763 | return 0; |
764 | } |
765 | |
766 | /** |
767 | * fcoe_ctlr_device_add() - Add a FIP ctlr to sysfs |
768 | * @parent: The parent device to which the fcoe_ctlr instance |
769 | * should be attached |
770 | * @f: The LLD's FCoE sysfs function template pointer |
771 | * @priv_size: Size to be allocated with the fcoe_ctlr_device for the LLD |
772 | * |
773 | * This routine allocates a FIP ctlr object with some additional memory |
774 | * for the LLD. The FIP ctlr is initialized, added to sysfs and then |
775 | * attributes are added to it. |
776 | */ |
777 | struct fcoe_ctlr_device *fcoe_ctlr_device_add(struct device *parent, |
778 | struct fcoe_sysfs_function_template *f, |
779 | int priv_size) |
780 | { |
781 | struct fcoe_ctlr_device *ctlr; |
782 | int error = 0; |
783 | |
784 | ctlr = kzalloc(size: sizeof(struct fcoe_ctlr_device) + priv_size, |
785 | GFP_KERNEL); |
786 | if (!ctlr) |
787 | goto out; |
788 | |
789 | ctlr->id = atomic_inc_return(v: &ctlr_num) - 1; |
790 | ctlr->f = f; |
791 | ctlr->mode = FIP_CONN_TYPE_FABRIC; |
792 | INIT_LIST_HEAD(list: &ctlr->fcfs); |
793 | mutex_init(&ctlr->lock); |
794 | ctlr->dev.parent = parent; |
795 | ctlr->dev.bus = &fcoe_bus_type; |
796 | ctlr->dev.type = &fcoe_ctlr_device_type; |
797 | |
798 | ctlr->fcf_dev_loss_tmo = fcoe_fcf_dev_loss_tmo; |
799 | |
800 | snprintf(buf: ctlr->work_q_name, size: sizeof(ctlr->work_q_name), |
801 | fmt: "ctlr_wq_%d" , ctlr->id); |
802 | ctlr->work_q = create_singlethread_workqueue( |
803 | ctlr->work_q_name); |
804 | if (!ctlr->work_q) |
805 | goto out_del; |
806 | |
807 | snprintf(buf: ctlr->devloss_work_q_name, |
808 | size: sizeof(ctlr->devloss_work_q_name), |
809 | fmt: "ctlr_dl_wq_%d" , ctlr->id); |
810 | ctlr->devloss_work_q = create_singlethread_workqueue( |
811 | ctlr->devloss_work_q_name); |
812 | if (!ctlr->devloss_work_q) |
813 | goto out_del_q; |
814 | |
815 | dev_set_name(dev: &ctlr->dev, name: "ctlr_%d" , ctlr->id); |
816 | error = device_register(dev: &ctlr->dev); |
817 | if (error) { |
818 | destroy_workqueue(wq: ctlr->devloss_work_q); |
819 | destroy_workqueue(wq: ctlr->work_q); |
820 | put_device(dev: &ctlr->dev); |
821 | return NULL; |
822 | } |
823 | |
824 | return ctlr; |
825 | |
826 | out_del_q: |
827 | destroy_workqueue(wq: ctlr->work_q); |
828 | ctlr->work_q = NULL; |
829 | out_del: |
830 | kfree(objp: ctlr); |
831 | out: |
832 | return NULL; |
833 | } |
834 | EXPORT_SYMBOL_GPL(fcoe_ctlr_device_add); |
835 | |
836 | /** |
837 | * fcoe_ctlr_device_delete() - Delete a FIP ctlr and its subtree from sysfs |
838 | * @ctlr: A pointer to the ctlr to be deleted |
839 | * |
840 | * Deletes a FIP ctlr and any fcfs attached |
841 | * to it. Deleting fcfs will cause their childen |
842 | * to be deleted as well. |
843 | * |
844 | * The ctlr is detached from sysfs and it's resources |
845 | * are freed (work q), but the memory is not freed |
846 | * until its last reference is released. |
847 | * |
848 | * This routine expects no locks to be held before |
849 | * calling. |
850 | * |
851 | * TODO: Currently there are no callbacks to clean up LLD data |
852 | * for a fcoe_fcf_device. LLDs must keep this in mind as they need |
853 | * to clean up each of their LLD data for all fcoe_fcf_device before |
854 | * calling fcoe_ctlr_device_delete. |
855 | */ |
856 | void fcoe_ctlr_device_delete(struct fcoe_ctlr_device *ctlr) |
857 | { |
858 | struct fcoe_fcf_device *fcf, *next; |
859 | /* Remove any attached fcfs */ |
860 | mutex_lock(&ctlr->lock); |
861 | list_for_each_entry_safe(fcf, next, |
862 | &ctlr->fcfs, peers) { |
863 | list_del(entry: &fcf->peers); |
864 | fcf->state = FCOE_FCF_STATE_DELETED; |
865 | fcoe_ctlr_device_queue_work(ctlr, work: &fcf->delete_work); |
866 | } |
867 | mutex_unlock(lock: &ctlr->lock); |
868 | |
869 | fcoe_ctlr_device_flush_work(ctlr); |
870 | |
871 | destroy_workqueue(wq: ctlr->devloss_work_q); |
872 | ctlr->devloss_work_q = NULL; |
873 | destroy_workqueue(wq: ctlr->work_q); |
874 | ctlr->work_q = NULL; |
875 | |
876 | device_unregister(dev: &ctlr->dev); |
877 | } |
878 | EXPORT_SYMBOL_GPL(fcoe_ctlr_device_delete); |
879 | |
880 | /** |
881 | * fcoe_fcf_device_final_delete() - Final delete routine |
882 | * @work: The FIP fcf's embedded work struct |
883 | * |
884 | * It is expected that the fcf has been removed from |
885 | * the FIP ctlr's list before calling this routine. |
886 | */ |
887 | static void fcoe_fcf_device_final_delete(struct work_struct *work) |
888 | { |
889 | struct fcoe_fcf_device *fcf = |
890 | container_of(work, struct fcoe_fcf_device, delete_work); |
891 | struct fcoe_ctlr_device *ctlr = fcoe_fcf_dev_to_ctlr_dev(fcf); |
892 | |
893 | /* |
894 | * Cancel any outstanding timers. These should really exist |
895 | * only when rmmod'ing the LLDD and we're asking for |
896 | * immediate termination of the rports |
897 | */ |
898 | if (!cancel_delayed_work(dwork: &fcf->dev_loss_work)) |
899 | fcoe_ctlr_device_flush_devloss(ctlr); |
900 | |
901 | device_unregister(dev: &fcf->dev); |
902 | } |
903 | |
904 | /** |
905 | * fip_timeout_deleted_fcf() - Delete a fcf when the devloss timer fires |
906 | * @work: The FIP fcf's embedded work struct |
907 | * |
908 | * Removes the fcf from the FIP ctlr's list of fcfs and |
909 | * queues the final deletion. |
910 | */ |
911 | static void fip_timeout_deleted_fcf(struct work_struct *work) |
912 | { |
913 | struct fcoe_fcf_device *fcf = |
914 | container_of(work, struct fcoe_fcf_device, dev_loss_work.work); |
915 | struct fcoe_ctlr_device *ctlr = fcoe_fcf_dev_to_ctlr_dev(fcf); |
916 | |
917 | mutex_lock(&ctlr->lock); |
918 | |
919 | /* |
920 | * If the fcf is deleted or reconnected before the timer |
921 | * fires the devloss queue will be flushed, but the state will |
922 | * either be CONNECTED or DELETED. If that is the case we |
923 | * cancel deleting the fcf. |
924 | */ |
925 | if (fcf->state != FCOE_FCF_STATE_DISCONNECTED) |
926 | goto out; |
927 | |
928 | dev_printk(KERN_ERR, &fcf->dev, |
929 | "FIP fcf connection time out: removing fcf\n" ); |
930 | |
931 | list_del(entry: &fcf->peers); |
932 | fcf->state = FCOE_FCF_STATE_DELETED; |
933 | fcoe_ctlr_device_queue_work(ctlr, work: &fcf->delete_work); |
934 | |
935 | out: |
936 | mutex_unlock(lock: &ctlr->lock); |
937 | } |
938 | |
939 | /** |
940 | * fcoe_fcf_device_delete() - Delete a FIP fcf |
941 | * @fcf: Pointer to the fcf which is to be deleted |
942 | * |
943 | * Queues the FIP fcf on the devloss workqueue |
944 | * |
945 | * Expects the ctlr_attrs mutex to be held for fcf |
946 | * state change. |
947 | */ |
948 | void fcoe_fcf_device_delete(struct fcoe_fcf_device *fcf) |
949 | { |
950 | struct fcoe_ctlr_device *ctlr = fcoe_fcf_dev_to_ctlr_dev(fcf); |
951 | int timeout = fcf->dev_loss_tmo; |
952 | |
953 | if (fcf->state != FCOE_FCF_STATE_CONNECTED) |
954 | return; |
955 | |
956 | fcf->state = FCOE_FCF_STATE_DISCONNECTED; |
957 | |
958 | /* |
959 | * FCF will only be re-connected by the LLD calling |
960 | * fcoe_fcf_device_add, and it should be setting up |
961 | * priv then. |
962 | */ |
963 | fcf->priv = NULL; |
964 | |
965 | fcoe_ctlr_device_queue_devloss_work(ctlr, work: &fcf->dev_loss_work, |
966 | delay: timeout * HZ); |
967 | } |
968 | EXPORT_SYMBOL_GPL(fcoe_fcf_device_delete); |
969 | |
970 | /** |
971 | * fcoe_fcf_device_add() - Add a FCoE sysfs fcoe_fcf_device to the system |
972 | * @ctlr: The fcoe_ctlr_device that will be the fcoe_fcf_device parent |
973 | * @new_fcf: A temporary FCF used for lookups on the current list of fcfs |
974 | * |
975 | * Expects to be called with the ctlr->lock held |
976 | */ |
977 | struct fcoe_fcf_device *fcoe_fcf_device_add(struct fcoe_ctlr_device *ctlr, |
978 | struct fcoe_fcf_device *new_fcf) |
979 | { |
980 | struct fcoe_fcf_device *fcf; |
981 | int error = 0; |
982 | |
983 | list_for_each_entry(fcf, &ctlr->fcfs, peers) { |
984 | if (fcoe_fcf_device_match(new: new_fcf, old: fcf)) { |
985 | if (fcf->state == FCOE_FCF_STATE_CONNECTED) |
986 | return fcf; |
987 | |
988 | fcf->state = FCOE_FCF_STATE_CONNECTED; |
989 | |
990 | if (!cancel_delayed_work(dwork: &fcf->dev_loss_work)) |
991 | fcoe_ctlr_device_flush_devloss(ctlr); |
992 | |
993 | return fcf; |
994 | } |
995 | } |
996 | |
997 | fcf = kzalloc(size: sizeof(struct fcoe_fcf_device), GFP_ATOMIC); |
998 | if (unlikely(!fcf)) |
999 | goto out; |
1000 | |
1001 | INIT_WORK(&fcf->delete_work, fcoe_fcf_device_final_delete); |
1002 | INIT_DELAYED_WORK(&fcf->dev_loss_work, fip_timeout_deleted_fcf); |
1003 | |
1004 | fcf->dev.parent = &ctlr->dev; |
1005 | fcf->dev.bus = &fcoe_bus_type; |
1006 | fcf->dev.type = &fcoe_fcf_device_type; |
1007 | fcf->id = atomic_inc_return(v: &fcf_num) - 1; |
1008 | fcf->state = FCOE_FCF_STATE_UNKNOWN; |
1009 | |
1010 | fcf->dev_loss_tmo = ctlr->fcf_dev_loss_tmo; |
1011 | |
1012 | dev_set_name(dev: &fcf->dev, name: "fcf_%d" , fcf->id); |
1013 | |
1014 | fcf->fabric_name = new_fcf->fabric_name; |
1015 | fcf->switch_name = new_fcf->switch_name; |
1016 | fcf->fc_map = new_fcf->fc_map; |
1017 | fcf->vfid = new_fcf->vfid; |
1018 | memcpy(fcf->mac, new_fcf->mac, ETH_ALEN); |
1019 | fcf->priority = new_fcf->priority; |
1020 | fcf->fka_period = new_fcf->fka_period; |
1021 | fcf->selected = new_fcf->selected; |
1022 | |
1023 | error = device_register(dev: &fcf->dev); |
1024 | if (error) { |
1025 | put_device(dev: &fcf->dev); |
1026 | goto out; |
1027 | } |
1028 | |
1029 | fcf->state = FCOE_FCF_STATE_CONNECTED; |
1030 | list_add_tail(new: &fcf->peers, head: &ctlr->fcfs); |
1031 | |
1032 | return fcf; |
1033 | |
1034 | out: |
1035 | return NULL; |
1036 | } |
1037 | EXPORT_SYMBOL_GPL(fcoe_fcf_device_add); |
1038 | |
1039 | int __init fcoe_sysfs_setup(void) |
1040 | { |
1041 | atomic_set(v: &ctlr_num, i: 0); |
1042 | atomic_set(v: &fcf_num, i: 0); |
1043 | |
1044 | return bus_register(bus: &fcoe_bus_type); |
1045 | } |
1046 | |
1047 | void __exit fcoe_sysfs_teardown(void) |
1048 | { |
1049 | bus_unregister(bus: &fcoe_bus_type); |
1050 | } |
1051 | |