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 | |
14 | #include <scsi/fcoe_sysfs.h> |
15 | #include <scsi/libfcoe.h> |
16 | |
17 | /* |
18 | * OK to include local libfcoe.h for debug_logging, but cannot include |
19 | * <scsi/libfcoe.h> otherwise non-netdev based fcoe solutions would have |
20 | * have to include more than fcoe_sysfs.h. |
21 | */ |
22 | #include "libfcoe.h" |
23 | |
24 | static atomic_t ctlr_num; |
25 | static atomic_t fcf_num; |
26 | |
27 | /* |
28 | * fcoe_fcf_dev_loss_tmo: the default number of seconds that fcoe sysfs |
29 | * should insulate the loss of a fcf. |
30 | */ |
31 | static unsigned int fcoe_fcf_dev_loss_tmo = 1800; /* seconds */ |
32 | |
33 | module_param_named(fcf_dev_loss_tmo, fcoe_fcf_dev_loss_tmo, |
34 | uint, S_IRUGO|S_IWUSR); |
35 | MODULE_PARM_DESC(fcf_dev_loss_tmo, |
36 | "Maximum number of seconds that libfcoe should" |
37 | " insulate the loss of a fcf. Once this value is" |
38 | " exceeded, the fcf is removed." ); |
39 | |
40 | /* |
41 | * These are used by the fcoe_*_show_function routines, they |
42 | * are intentionally placed in the .c file as they're not intended |
43 | * for use throughout the code. |
44 | */ |
45 | #define fcoe_ctlr_id(x) \ |
46 | ((x)->id) |
47 | #define fcoe_ctlr_work_q_name(x) \ |
48 | ((x)->work_q_name) |
49 | #define fcoe_ctlr_work_q(x) \ |
50 | ((x)->work_q) |
51 | #define fcoe_ctlr_devloss_work_q_name(x) \ |
52 | ((x)->devloss_work_q_name) |
53 | #define fcoe_ctlr_devloss_work_q(x) \ |
54 | ((x)->devloss_work_q) |
55 | #define fcoe_ctlr_mode(x) \ |
56 | ((x)->mode) |
57 | #define fcoe_ctlr_fcf_dev_loss_tmo(x) \ |
58 | ((x)->fcf_dev_loss_tmo) |
59 | #define fcoe_ctlr_link_fail(x) \ |
60 | ((x)->lesb.lesb_link_fail) |
61 | #define fcoe_ctlr_vlink_fail(x) \ |
62 | ((x)->lesb.lesb_vlink_fail) |
63 | #define fcoe_ctlr_miss_fka(x) \ |
64 | ((x)->lesb.lesb_miss_fka) |
65 | #define fcoe_ctlr_symb_err(x) \ |
66 | ((x)->lesb.lesb_symb_err) |
67 | #define fcoe_ctlr_err_block(x) \ |
68 | ((x)->lesb.lesb_err_block) |
69 | #define fcoe_ctlr_fcs_error(x) \ |
70 | ((x)->lesb.lesb_fcs_error) |
71 | #define fcoe_ctlr_enabled(x) \ |
72 | ((x)->enabled) |
73 | #define fcoe_fcf_state(x) \ |
74 | ((x)->state) |
75 | #define fcoe_fcf_fabric_name(x) \ |
76 | ((x)->fabric_name) |
77 | #define fcoe_fcf_switch_name(x) \ |
78 | ((x)->switch_name) |
79 | #define fcoe_fcf_fc_map(x) \ |
80 | ((x)->fc_map) |
81 | #define fcoe_fcf_vfid(x) \ |
82 | ((x)->vfid) |
83 | #define fcoe_fcf_mac(x) \ |
84 | ((x)->mac) |
85 | #define fcoe_fcf_priority(x) \ |
86 | ((x)->priority) |
87 | #define fcoe_fcf_fka_period(x) \ |
88 | ((x)->fka_period) |
89 | #define fcoe_fcf_dev_loss_tmo(x) \ |
90 | ((x)->dev_loss_tmo) |
91 | #define fcoe_fcf_selected(x) \ |
92 | ((x)->selected) |
93 | #define fcoe_fcf_vlan_id(x) \ |
94 | ((x)->vlan_id) |
95 | |
96 | /* |
97 | * dev_loss_tmo attribute |
98 | */ |
99 | static int fcoe_str_to_dev_loss(const char *buf, unsigned long *val) |
100 | { |
101 | int ret; |
102 | |
103 | ret = kstrtoul(s: buf, base: 0, res: val); |
104 | if (ret) |
105 | return -EINVAL; |
106 | /* |
107 | * Check for overflow; dev_loss_tmo is u32 |
108 | */ |
109 | if (*val > UINT_MAX) |
110 | return -EINVAL; |
111 | |
112 | return 0; |
113 | } |
114 | |
115 | static int fcoe_fcf_set_dev_loss_tmo(struct fcoe_fcf_device *fcf, |
116 | unsigned long val) |
117 | { |
118 | if ((fcf->state == FCOE_FCF_STATE_UNKNOWN) || |
119 | (fcf->state == FCOE_FCF_STATE_DISCONNECTED) || |
120 | (fcf->state == FCOE_FCF_STATE_DELETED)) |
121 | return -EBUSY; |
122 | /* |
123 | * Check for overflow; dev_loss_tmo is u32 |
124 | */ |
125 | if (val > UINT_MAX) |
126 | return -EINVAL; |
127 | |
128 | fcoe_fcf_dev_loss_tmo(fcf) = val; |
129 | return 0; |
130 | } |
131 | |
132 | #define FCOE_DEVICE_ATTR(_prefix, _name, _mode, _show, _store) \ |
133 | struct device_attribute device_attr_fcoe_##_prefix##_##_name = \ |
134 | __ATTR(_name, _mode, _show, _store) |
135 | |
136 | #define fcoe_ctlr_show_function(field, format_string, sz, cast) \ |
137 | static ssize_t show_fcoe_ctlr_device_##field(struct device *dev, \ |
138 | struct device_attribute *attr, \ |
139 | char *buf) \ |
140 | { \ |
141 | struct fcoe_ctlr_device *ctlr = dev_to_ctlr(dev); \ |
142 | if (ctlr->f->get_fcoe_ctlr_##field) \ |
143 | ctlr->f->get_fcoe_ctlr_##field(ctlr); \ |
144 | return snprintf(buf, sz, format_string, \ |
145 | cast fcoe_ctlr_##field(ctlr)); \ |
146 | } |
147 | |
148 | #define fcoe_fcf_show_function(field, format_string, sz, cast) \ |
149 | static ssize_t show_fcoe_fcf_device_##field(struct device *dev, \ |
150 | struct device_attribute *attr, \ |
151 | char *buf) \ |
152 | { \ |
153 | struct fcoe_fcf_device *fcf = dev_to_fcf(dev); \ |
154 | struct fcoe_ctlr_device *ctlr = fcoe_fcf_dev_to_ctlr_dev(fcf); \ |
155 | if (ctlr->f->get_fcoe_fcf_##field) \ |
156 | ctlr->f->get_fcoe_fcf_##field(fcf); \ |
157 | return snprintf(buf, sz, format_string, \ |
158 | cast fcoe_fcf_##field(fcf)); \ |
159 | } |
160 | |
161 | #define fcoe_ctlr_private_show_function(field, format_string, sz, cast) \ |
162 | static ssize_t show_fcoe_ctlr_device_##field(struct device *dev, \ |
163 | struct device_attribute *attr, \ |
164 | char *buf) \ |
165 | { \ |
166 | struct fcoe_ctlr_device *ctlr = dev_to_ctlr(dev); \ |
167 | return snprintf(buf, sz, format_string, cast fcoe_ctlr_##field(ctlr)); \ |
168 | } |
169 | |
170 | #define fcoe_fcf_private_show_function(field, format_string, sz, cast) \ |
171 | static ssize_t show_fcoe_fcf_device_##field(struct device *dev, \ |
172 | struct device_attribute *attr, \ |
173 | char *buf) \ |
174 | { \ |
175 | struct fcoe_fcf_device *fcf = dev_to_fcf(dev); \ |
176 | return snprintf(buf, sz, format_string, cast fcoe_fcf_##field(fcf)); \ |
177 | } |
178 | |
179 | #define fcoe_ctlr_private_rd_attr(field, format_string, sz) \ |
180 | fcoe_ctlr_private_show_function(field, format_string, sz, ) \ |
181 | static FCOE_DEVICE_ATTR(ctlr, field, S_IRUGO, \ |
182 | show_fcoe_ctlr_device_##field, NULL) |
183 | |
184 | #define fcoe_ctlr_rd_attr(field, format_string, sz) \ |
185 | fcoe_ctlr_show_function(field, format_string, sz, ) \ |
186 | static FCOE_DEVICE_ATTR(ctlr, field, S_IRUGO, \ |
187 | show_fcoe_ctlr_device_##field, NULL) |
188 | |
189 | #define fcoe_fcf_rd_attr(field, format_string, sz) \ |
190 | fcoe_fcf_show_function(field, format_string, sz, ) \ |
191 | static FCOE_DEVICE_ATTR(fcf, field, S_IRUGO, \ |
192 | show_fcoe_fcf_device_##field, NULL) |
193 | |
194 | #define fcoe_fcf_private_rd_attr(field, format_string, sz) \ |
195 | fcoe_fcf_private_show_function(field, format_string, sz, ) \ |
196 | static FCOE_DEVICE_ATTR(fcf, field, S_IRUGO, \ |
197 | show_fcoe_fcf_device_##field, NULL) |
198 | |
199 | #define fcoe_ctlr_private_rd_attr_cast(field, format_string, sz, cast) \ |
200 | fcoe_ctlr_private_show_function(field, format_string, sz, (cast)) \ |
201 | static FCOE_DEVICE_ATTR(ctlr, field, S_IRUGO, \ |
202 | show_fcoe_ctlr_device_##field, NULL) |
203 | |
204 | #define fcoe_fcf_private_rd_attr_cast(field, format_string, sz, cast) \ |
205 | fcoe_fcf_private_show_function(field, format_string, sz, (cast)) \ |
206 | static FCOE_DEVICE_ATTR(fcf, field, S_IRUGO, \ |
207 | show_fcoe_fcf_device_##field, NULL) |
208 | |
209 | #define fcoe_enum_name_search(title, table_type, table) \ |
210 | static const char *get_fcoe_##title##_name(enum table_type table_key) \ |
211 | { \ |
212 | if (table_key < 0 || table_key >= ARRAY_SIZE(table)) \ |
213 | return NULL; \ |
214 | return table[table_key]; \ |
215 | } |
216 | |
217 | static char *fip_conn_type_names[] = { |
218 | [ FIP_CONN_TYPE_UNKNOWN ] = "Unknown" , |
219 | [ FIP_CONN_TYPE_FABRIC ] = "Fabric" , |
220 | [ FIP_CONN_TYPE_VN2VN ] = "VN2VN" , |
221 | }; |
222 | fcoe_enum_name_search(ctlr_mode, fip_conn_type, fip_conn_type_names) |
223 | |
224 | static enum fip_conn_type fcoe_parse_mode(const char *buf) |
225 | { |
226 | int i; |
227 | |
228 | for (i = 0; i < ARRAY_SIZE(fip_conn_type_names); i++) { |
229 | if (strcasecmp(s1: buf, s2: fip_conn_type_names[i]) == 0) |
230 | return i; |
231 | } |
232 | |
233 | return FIP_CONN_TYPE_UNKNOWN; |
234 | } |
235 | |
236 | static char *fcf_state_names[] = { |
237 | [ FCOE_FCF_STATE_UNKNOWN ] = "Unknown" , |
238 | [ FCOE_FCF_STATE_DISCONNECTED ] = "Disconnected" , |
239 | [ FCOE_FCF_STATE_CONNECTED ] = "Connected" , |
240 | }; |
241 | fcoe_enum_name_search(fcf_state, fcf_state, fcf_state_names) |
242 | #define FCOE_FCF_STATE_MAX_NAMELEN 50 |
243 | |
244 | static ssize_t show_fcf_state(struct device *dev, |
245 | struct device_attribute *attr, |
246 | char *buf) |
247 | { |
248 | struct fcoe_fcf_device *fcf = dev_to_fcf(dev); |
249 | const char *name; |
250 | name = get_fcoe_fcf_state_name(table_key: fcf->state); |
251 | if (!name) |
252 | return -EINVAL; |
253 | return snprintf(buf, FCOE_FCF_STATE_MAX_NAMELEN, fmt: "%s\n" , name); |
254 | } |
255 | static FCOE_DEVICE_ATTR(fcf, state, S_IRUGO, show_fcf_state, NULL); |
256 | |
257 | #define FCOE_MAX_MODENAME_LEN 20 |
258 | static ssize_t show_ctlr_mode(struct device *dev, |
259 | struct device_attribute *attr, |
260 | char *buf) |
261 | { |
262 | struct fcoe_ctlr_device *ctlr = dev_to_ctlr(dev); |
263 | const char *name; |
264 | |
265 | name = get_fcoe_ctlr_mode_name(table_key: ctlr->mode); |
266 | if (!name) |
267 | return -EINVAL; |
268 | return snprintf(buf, FCOE_MAX_MODENAME_LEN, |
269 | fmt: "%s\n" , name); |
270 | } |
271 | |
272 | static ssize_t store_ctlr_mode(struct device *dev, |
273 | struct device_attribute *attr, |
274 | const char *buf, size_t count) |
275 | { |
276 | struct fcoe_ctlr_device *ctlr = dev_to_ctlr(dev); |
277 | char mode[FCOE_MAX_MODENAME_LEN + 1]; |
278 | |
279 | if (count > FCOE_MAX_MODENAME_LEN) |
280 | return -EINVAL; |
281 | |
282 | strncpy(p: mode, q: buf, size: count); |
283 | |
284 | if (mode[count - 1] == '\n') |
285 | mode[count - 1] = '\0'; |
286 | else |
287 | mode[count] = '\0'; |
288 | |
289 | switch (ctlr->enabled) { |
290 | case FCOE_CTLR_ENABLED: |
291 | LIBFCOE_SYSFS_DBG(ctlr, "Cannot change mode when enabled.\n" ); |
292 | return -EBUSY; |
293 | case FCOE_CTLR_DISABLED: |
294 | if (!ctlr->f->set_fcoe_ctlr_mode) { |
295 | LIBFCOE_SYSFS_DBG(ctlr, |
296 | "Mode change not supported by LLD.\n" ); |
297 | return -ENOTSUPP; |
298 | } |
299 | |
300 | ctlr->mode = fcoe_parse_mode(buf: mode); |
301 | if (ctlr->mode == FIP_CONN_TYPE_UNKNOWN) { |
302 | LIBFCOE_SYSFS_DBG(ctlr, "Unknown mode %s provided.\n" , |
303 | buf); |
304 | return -EINVAL; |
305 | } |
306 | |
307 | ctlr->f->set_fcoe_ctlr_mode(ctlr); |
308 | LIBFCOE_SYSFS_DBG(ctlr, "Mode changed to %s.\n" , buf); |
309 | |
310 | return count; |
311 | case FCOE_CTLR_UNUSED: |
312 | default: |
313 | LIBFCOE_SYSFS_DBG(ctlr, "Mode change not supported.\n" ); |
314 | return -ENOTSUPP; |
315 | } |
316 | } |
317 | |
318 | static FCOE_DEVICE_ATTR(ctlr, mode, S_IRUGO | S_IWUSR, |
319 | show_ctlr_mode, store_ctlr_mode); |
320 | |
321 | static ssize_t store_ctlr_enabled(struct device *dev, |
322 | struct device_attribute *attr, |
323 | const char *buf, size_t count) |
324 | { |
325 | struct fcoe_ctlr_device *ctlr = dev_to_ctlr(dev); |
326 | bool enabled; |
327 | int rc; |
328 | |
329 | if (*buf == '1') |
330 | enabled = true; |
331 | else if (*buf == '0') |
332 | enabled = false; |
333 | else |
334 | return -EINVAL; |
335 | |
336 | switch (ctlr->enabled) { |
337 | case FCOE_CTLR_ENABLED: |
338 | if (enabled) |
339 | return count; |
340 | ctlr->enabled = FCOE_CTLR_DISABLED; |
341 | break; |
342 | case FCOE_CTLR_DISABLED: |
343 | if (!enabled) |
344 | return count; |
345 | ctlr->enabled = FCOE_CTLR_ENABLED; |
346 | break; |
347 | case FCOE_CTLR_UNUSED: |
348 | return -ENOTSUPP; |
349 | } |
350 | |
351 | rc = ctlr->f->set_fcoe_ctlr_enabled(ctlr); |
352 | if (rc) |
353 | return rc; |
354 | |
355 | return count; |
356 | } |
357 | |
358 | static char *ctlr_enabled_state_names[] = { |
359 | [ FCOE_CTLR_ENABLED ] = "1" , |
360 | [ FCOE_CTLR_DISABLED ] = "0" , |
361 | }; |
362 | fcoe_enum_name_search(ctlr_enabled_state, ctlr_enabled_state, |
363 | ctlr_enabled_state_names) |
364 | #define FCOE_CTLR_ENABLED_MAX_NAMELEN 50 |
365 | |
366 | static ssize_t show_ctlr_enabled_state(struct device *dev, |
367 | struct device_attribute *attr, |
368 | char *buf) |
369 | { |
370 | struct fcoe_ctlr_device *ctlr = dev_to_ctlr(dev); |
371 | const char *name; |
372 | |
373 | name = get_fcoe_ctlr_enabled_state_name(table_key: ctlr->enabled); |
374 | if (!name) |
375 | return -EINVAL; |
376 | return snprintf(buf, FCOE_CTLR_ENABLED_MAX_NAMELEN, |
377 | fmt: "%s\n" , name); |
378 | } |
379 | |
380 | static FCOE_DEVICE_ATTR(ctlr, enabled, S_IRUGO | S_IWUSR, |
381 | show_ctlr_enabled_state, |
382 | store_ctlr_enabled); |
383 | |
384 | static ssize_t store_ctlr_fip_resp(struct device *dev, |
385 | struct device_attribute *attr, |
386 | const char *buf, size_t count) |
387 | { |
388 | struct fcoe_ctlr_device *ctlr = dev_to_ctlr(dev); |
389 | struct fcoe_ctlr *fip = fcoe_ctlr_device_priv(ctlr); |
390 | |
391 | mutex_lock(&fip->ctlr_mutex); |
392 | if ((buf[1] == '\0') || ((buf[1] == '\n') && (buf[2] == '\0'))) { |
393 | if (buf[0] == '1') { |
394 | fip->fip_resp = 1; |
395 | mutex_unlock(lock: &fip->ctlr_mutex); |
396 | return count; |
397 | } |
398 | if (buf[0] == '0') { |
399 | fip->fip_resp = 0; |
400 | mutex_unlock(lock: &fip->ctlr_mutex); |
401 | return count; |
402 | } |
403 | } |
404 | mutex_unlock(lock: &fip->ctlr_mutex); |
405 | return -EINVAL; |
406 | } |
407 | |
408 | static ssize_t show_ctlr_fip_resp(struct device *dev, |
409 | struct device_attribute *attr, |
410 | char *buf) |
411 | { |
412 | struct fcoe_ctlr_device *ctlr = dev_to_ctlr(dev); |
413 | struct fcoe_ctlr *fip = fcoe_ctlr_device_priv(ctlr); |
414 | |
415 | return sprintf(buf, fmt: "%d\n" , fip->fip_resp ? 1 : 0); |
416 | } |
417 | |
418 | static FCOE_DEVICE_ATTR(ctlr, fip_vlan_responder, S_IRUGO | S_IWUSR, |
419 | show_ctlr_fip_resp, |
420 | store_ctlr_fip_resp); |
421 | |
422 | static ssize_t |
423 | fcoe_ctlr_var_store(u32 *var, const char *buf, size_t count) |
424 | { |
425 | int err; |
426 | unsigned long v; |
427 | |
428 | err = kstrtoul(s: buf, base: 10, res: &v); |
429 | if (err || v > UINT_MAX) |
430 | return -EINVAL; |
431 | |
432 | *var = v; |
433 | |
434 | return count; |
435 | } |
436 | |
437 | static ssize_t store_ctlr_r_a_tov(struct device *dev, |
438 | struct device_attribute *attr, |
439 | const char *buf, size_t count) |
440 | { |
441 | struct fcoe_ctlr_device *ctlr_dev = dev_to_ctlr(dev); |
442 | struct fcoe_ctlr *ctlr = fcoe_ctlr_device_priv(ctlr: ctlr_dev); |
443 | |
444 | if (ctlr_dev->enabled == FCOE_CTLR_ENABLED) |
445 | return -EBUSY; |
446 | if (ctlr_dev->enabled == FCOE_CTLR_DISABLED) |
447 | return fcoe_ctlr_var_store(var: &ctlr->lp->r_a_tov, buf, count); |
448 | return -ENOTSUPP; |
449 | } |
450 | |
451 | static ssize_t show_ctlr_r_a_tov(struct device *dev, |
452 | struct device_attribute *attr, |
453 | char *buf) |
454 | { |
455 | struct fcoe_ctlr_device *ctlr_dev = dev_to_ctlr(dev); |
456 | struct fcoe_ctlr *ctlr = fcoe_ctlr_device_priv(ctlr: ctlr_dev); |
457 | |
458 | return sprintf(buf, fmt: "%d\n" , ctlr->lp->r_a_tov); |
459 | } |
460 | |
461 | static FCOE_DEVICE_ATTR(ctlr, r_a_tov, S_IRUGO | S_IWUSR, |
462 | show_ctlr_r_a_tov, store_ctlr_r_a_tov); |
463 | |
464 | static ssize_t store_ctlr_e_d_tov(struct device *dev, |
465 | struct device_attribute *attr, |
466 | const char *buf, size_t count) |
467 | { |
468 | struct fcoe_ctlr_device *ctlr_dev = dev_to_ctlr(dev); |
469 | struct fcoe_ctlr *ctlr = fcoe_ctlr_device_priv(ctlr: ctlr_dev); |
470 | |
471 | if (ctlr_dev->enabled == FCOE_CTLR_ENABLED) |
472 | return -EBUSY; |
473 | if (ctlr_dev->enabled == FCOE_CTLR_DISABLED) |
474 | return fcoe_ctlr_var_store(var: &ctlr->lp->e_d_tov, buf, count); |
475 | return -ENOTSUPP; |
476 | } |
477 | |
478 | static ssize_t show_ctlr_e_d_tov(struct device *dev, |
479 | struct device_attribute *attr, |
480 | char *buf) |
481 | { |
482 | struct fcoe_ctlr_device *ctlr_dev = dev_to_ctlr(dev); |
483 | struct fcoe_ctlr *ctlr = fcoe_ctlr_device_priv(ctlr: ctlr_dev); |
484 | |
485 | return sprintf(buf, fmt: "%d\n" , ctlr->lp->e_d_tov); |
486 | } |
487 | |
488 | static FCOE_DEVICE_ATTR(ctlr, e_d_tov, S_IRUGO | S_IWUSR, |
489 | show_ctlr_e_d_tov, store_ctlr_e_d_tov); |
490 | |
491 | static ssize_t |
492 | store_private_fcoe_ctlr_fcf_dev_loss_tmo(struct device *dev, |
493 | struct device_attribute *attr, |
494 | const char *buf, size_t count) |
495 | { |
496 | struct fcoe_ctlr_device *ctlr = dev_to_ctlr(dev); |
497 | struct fcoe_fcf_device *fcf; |
498 | unsigned long val; |
499 | int rc; |
500 | |
501 | rc = fcoe_str_to_dev_loss(buf, val: &val); |
502 | if (rc) |
503 | return rc; |
504 | |
505 | fcoe_ctlr_fcf_dev_loss_tmo(ctlr) = val; |
506 | mutex_lock(&ctlr->lock); |
507 | list_for_each_entry(fcf, &ctlr->fcfs, peers) |
508 | fcoe_fcf_set_dev_loss_tmo(fcf, val); |
509 | mutex_unlock(lock: &ctlr->lock); |
510 | return count; |
511 | } |
512 | fcoe_ctlr_private_show_function(fcf_dev_loss_tmo, "%d\n" , 20, ); |
513 | static FCOE_DEVICE_ATTR(ctlr, fcf_dev_loss_tmo, S_IRUGO | S_IWUSR, |
514 | show_fcoe_ctlr_device_fcf_dev_loss_tmo, |
515 | store_private_fcoe_ctlr_fcf_dev_loss_tmo); |
516 | |
517 | /* Link Error Status Block (LESB) */ |
518 | fcoe_ctlr_rd_attr(link_fail, "%u\n" , 20); |
519 | fcoe_ctlr_rd_attr(vlink_fail, "%u\n" , 20); |
520 | fcoe_ctlr_rd_attr(miss_fka, "%u\n" , 20); |
521 | fcoe_ctlr_rd_attr(symb_err, "%u\n" , 20); |
522 | fcoe_ctlr_rd_attr(err_block, "%u\n" , 20); |
523 | fcoe_ctlr_rd_attr(fcs_error, "%u\n" , 20); |
524 | |
525 | fcoe_fcf_private_rd_attr_cast(fabric_name, "0x%llx\n" , 20, unsigned long long); |
526 | fcoe_fcf_private_rd_attr_cast(switch_name, "0x%llx\n" , 20, unsigned long long); |
527 | fcoe_fcf_private_rd_attr(priority, "%u\n" , 20); |
528 | fcoe_fcf_private_rd_attr(fc_map, "0x%x\n" , 20); |
529 | fcoe_fcf_private_rd_attr(vfid, "%u\n" , 20); |
530 | fcoe_fcf_private_rd_attr(mac, "%pM\n" , 20); |
531 | fcoe_fcf_private_rd_attr(fka_period, "%u\n" , 20); |
532 | fcoe_fcf_rd_attr(selected, "%u\n" , 20); |
533 | fcoe_fcf_rd_attr(vlan_id, "%u\n" , 20); |
534 | |
535 | fcoe_fcf_private_show_function(dev_loss_tmo, "%d\n" , 20, ) |
536 | static ssize_t |
537 | store_fcoe_fcf_dev_loss_tmo(struct device *dev, struct device_attribute *attr, |
538 | const char *buf, size_t count) |
539 | { |
540 | struct fcoe_fcf_device *fcf = dev_to_fcf(dev); |
541 | unsigned long val; |
542 | int rc; |
543 | |
544 | rc = fcoe_str_to_dev_loss(buf, val: &val); |
545 | if (rc) |
546 | return rc; |
547 | |
548 | rc = fcoe_fcf_set_dev_loss_tmo(fcf, val); |
549 | if (rc) |
550 | return rc; |
551 | return count; |
552 | } |
553 | static FCOE_DEVICE_ATTR(fcf, dev_loss_tmo, S_IRUGO | S_IWUSR, |
554 | show_fcoe_fcf_device_dev_loss_tmo, |
555 | store_fcoe_fcf_dev_loss_tmo); |
556 | |
557 | static struct attribute *fcoe_ctlr_lesb_attrs[] = { |
558 | &device_attr_fcoe_ctlr_link_fail.attr, |
559 | &device_attr_fcoe_ctlr_vlink_fail.attr, |
560 | &device_attr_fcoe_ctlr_miss_fka.attr, |
561 | &device_attr_fcoe_ctlr_symb_err.attr, |
562 | &device_attr_fcoe_ctlr_err_block.attr, |
563 | &device_attr_fcoe_ctlr_fcs_error.attr, |
564 | NULL, |
565 | }; |
566 | |
567 | static struct attribute_group fcoe_ctlr_lesb_attr_group = { |
568 | .name = "lesb" , |
569 | .attrs = fcoe_ctlr_lesb_attrs, |
570 | }; |
571 | |
572 | static struct attribute *fcoe_ctlr_attrs[] = { |
573 | &device_attr_fcoe_ctlr_fip_vlan_responder.attr, |
574 | &device_attr_fcoe_ctlr_fcf_dev_loss_tmo.attr, |
575 | &device_attr_fcoe_ctlr_r_a_tov.attr, |
576 | &device_attr_fcoe_ctlr_e_d_tov.attr, |
577 | &device_attr_fcoe_ctlr_enabled.attr, |
578 | &device_attr_fcoe_ctlr_mode.attr, |
579 | NULL, |
580 | }; |
581 | |
582 | static struct attribute_group fcoe_ctlr_attr_group = { |
583 | .attrs = fcoe_ctlr_attrs, |
584 | }; |
585 | |
586 | static const struct attribute_group *fcoe_ctlr_attr_groups[] = { |
587 | &fcoe_ctlr_attr_group, |
588 | &fcoe_ctlr_lesb_attr_group, |
589 | NULL, |
590 | }; |
591 | |
592 | static struct attribute *fcoe_fcf_attrs[] = { |
593 | &device_attr_fcoe_fcf_fabric_name.attr, |
594 | &device_attr_fcoe_fcf_switch_name.attr, |
595 | &device_attr_fcoe_fcf_dev_loss_tmo.attr, |
596 | &device_attr_fcoe_fcf_fc_map.attr, |
597 | &device_attr_fcoe_fcf_vfid.attr, |
598 | &device_attr_fcoe_fcf_mac.attr, |
599 | &device_attr_fcoe_fcf_priority.attr, |
600 | &device_attr_fcoe_fcf_fka_period.attr, |
601 | &device_attr_fcoe_fcf_state.attr, |
602 | &device_attr_fcoe_fcf_selected.attr, |
603 | &device_attr_fcoe_fcf_vlan_id.attr, |
604 | NULL |
605 | }; |
606 | |
607 | static struct attribute_group fcoe_fcf_attr_group = { |
608 | .attrs = fcoe_fcf_attrs, |
609 | }; |
610 | |
611 | static const struct attribute_group *fcoe_fcf_attr_groups[] = { |
612 | &fcoe_fcf_attr_group, |
613 | NULL, |
614 | }; |
615 | |
616 | static struct bus_type fcoe_bus_type; |
617 | |
618 | static int fcoe_bus_match(struct device *dev, |
619 | struct device_driver *drv) |
620 | { |
621 | if (dev->bus == &fcoe_bus_type) |
622 | return 1; |
623 | return 0; |
624 | } |
625 | |
626 | /** |
627 | * fcoe_ctlr_device_release() - Release the FIP ctlr memory |
628 | * @dev: Pointer to the FIP ctlr's embedded device |
629 | * |
630 | * Called when the last FIP ctlr reference is released. |
631 | */ |
632 | static void fcoe_ctlr_device_release(struct device *dev) |
633 | { |
634 | struct fcoe_ctlr_device *ctlr = dev_to_ctlr(dev); |
635 | kfree(objp: ctlr); |
636 | } |
637 | |
638 | /** |
639 | * fcoe_fcf_device_release() - Release the FIP fcf memory |
640 | * @dev: Pointer to the fcf's embedded device |
641 | * |
642 | * Called when the last FIP fcf reference is released. |
643 | */ |
644 | static void fcoe_fcf_device_release(struct device *dev) |
645 | { |
646 | struct fcoe_fcf_device *fcf = dev_to_fcf(dev); |
647 | kfree(objp: fcf); |
648 | } |
649 | |
650 | static const struct device_type fcoe_ctlr_device_type = { |
651 | .name = "fcoe_ctlr" , |
652 | .groups = fcoe_ctlr_attr_groups, |
653 | .release = fcoe_ctlr_device_release, |
654 | }; |
655 | |
656 | static const struct device_type fcoe_fcf_device_type = { |
657 | .name = "fcoe_fcf" , |
658 | .groups = fcoe_fcf_attr_groups, |
659 | .release = fcoe_fcf_device_release, |
660 | }; |
661 | |
662 | static ssize_t ctlr_create_store(const struct bus_type *bus, const char *buf, |
663 | size_t count) |
664 | { |
665 | return fcoe_ctlr_create_store(buf, count); |
666 | } |
667 | static BUS_ATTR_WO(ctlr_create); |
668 | |
669 | static ssize_t ctlr_destroy_store(const struct bus_type *bus, const char *buf, |
670 | size_t count) |
671 | { |
672 | return fcoe_ctlr_destroy_store(buf, count); |
673 | } |
674 | static BUS_ATTR_WO(ctlr_destroy); |
675 | |
676 | static struct attribute *fcoe_bus_attrs[] = { |
677 | &bus_attr_ctlr_create.attr, |
678 | &bus_attr_ctlr_destroy.attr, |
679 | NULL, |
680 | }; |
681 | ATTRIBUTE_GROUPS(fcoe_bus); |
682 | |
683 | static struct bus_type fcoe_bus_type = { |
684 | .name = "fcoe" , |
685 | .match = &fcoe_bus_match, |
686 | .bus_groups = fcoe_bus_groups, |
687 | }; |
688 | |
689 | /** |
690 | * fcoe_ctlr_device_flush_work() - Flush a FIP ctlr's workqueue |
691 | * @ctlr: Pointer to the FIP ctlr whose workqueue is to be flushed |
692 | */ |
693 | static void fcoe_ctlr_device_flush_work(struct fcoe_ctlr_device *ctlr) |
694 | { |
695 | if (!fcoe_ctlr_work_q(ctlr)) { |
696 | printk(KERN_ERR |
697 | "ERROR: FIP Ctlr '%d' attempted to flush work, " |
698 | "when no workqueue created.\n" , ctlr->id); |
699 | dump_stack(); |
700 | return; |
701 | } |
702 | |
703 | flush_workqueue(fcoe_ctlr_work_q(ctlr)); |
704 | } |
705 | |
706 | /** |
707 | * fcoe_ctlr_device_queue_work() - Schedule work for a FIP ctlr's workqueue |
708 | * @ctlr: Pointer to the FIP ctlr who owns the devloss workqueue |
709 | * @work: Work to queue for execution |
710 | * |
711 | * Return value: |
712 | * 1 on success / 0 already queued / < 0 for error |
713 | */ |
714 | static int fcoe_ctlr_device_queue_work(struct fcoe_ctlr_device *ctlr, |
715 | struct work_struct *work) |
716 | { |
717 | if (unlikely(!fcoe_ctlr_work_q(ctlr))) { |
718 | printk(KERN_ERR |
719 | "ERROR: FIP Ctlr '%d' attempted to queue work, " |
720 | "when no workqueue created.\n" , ctlr->id); |
721 | dump_stack(); |
722 | |
723 | return -EINVAL; |
724 | } |
725 | |
726 | return queue_work(fcoe_ctlr_work_q(ctlr), work); |
727 | } |
728 | |
729 | /** |
730 | * fcoe_ctlr_device_flush_devloss() - Flush a FIP ctlr's devloss workqueue |
731 | * @ctlr: Pointer to FIP ctlr whose workqueue is to be flushed |
732 | */ |
733 | static void fcoe_ctlr_device_flush_devloss(struct fcoe_ctlr_device *ctlr) |
734 | { |
735 | if (!fcoe_ctlr_devloss_work_q(ctlr)) { |
736 | printk(KERN_ERR |
737 | "ERROR: FIP Ctlr '%d' attempted to flush work, " |
738 | "when no workqueue created.\n" , ctlr->id); |
739 | dump_stack(); |
740 | return; |
741 | } |
742 | |
743 | flush_workqueue(fcoe_ctlr_devloss_work_q(ctlr)); |
744 | } |
745 | |
746 | /** |
747 | * fcoe_ctlr_device_queue_devloss_work() - Schedule work for a FIP ctlr's devloss workqueue |
748 | * @ctlr: Pointer to the FIP ctlr who owns the devloss workqueue |
749 | * @work: Work to queue for execution |
750 | * @delay: jiffies to delay the work queuing |
751 | * |
752 | * Return value: |
753 | * 1 on success / 0 already queued / < 0 for error |
754 | */ |
755 | static int fcoe_ctlr_device_queue_devloss_work(struct fcoe_ctlr_device *ctlr, |
756 | struct delayed_work *work, |
757 | unsigned long delay) |
758 | { |
759 | if (unlikely(!fcoe_ctlr_devloss_work_q(ctlr))) { |
760 | printk(KERN_ERR |
761 | "ERROR: FIP Ctlr '%d' attempted to queue work, " |
762 | "when no workqueue created.\n" , ctlr->id); |
763 | dump_stack(); |
764 | |
765 | return -EINVAL; |
766 | } |
767 | |
768 | return queue_delayed_work(fcoe_ctlr_devloss_work_q(ctlr), dwork: work, delay); |
769 | } |
770 | |
771 | static int fcoe_fcf_device_match(struct fcoe_fcf_device *new, |
772 | struct fcoe_fcf_device *old) |
773 | { |
774 | if (new->switch_name == old->switch_name && |
775 | new->fabric_name == old->fabric_name && |
776 | new->fc_map == old->fc_map && |
777 | ether_addr_equal(addr1: new->mac, addr2: old->mac)) |
778 | return 1; |
779 | return 0; |
780 | } |
781 | |
782 | /** |
783 | * fcoe_ctlr_device_add() - Add a FIP ctlr to sysfs |
784 | * @parent: The parent device to which the fcoe_ctlr instance |
785 | * should be attached |
786 | * @f: The LLD's FCoE sysfs function template pointer |
787 | * @priv_size: Size to be allocated with the fcoe_ctlr_device for the LLD |
788 | * |
789 | * This routine allocates a FIP ctlr object with some additional memory |
790 | * for the LLD. The FIP ctlr is initialized, added to sysfs and then |
791 | * attributes are added to it. |
792 | */ |
793 | struct fcoe_ctlr_device *fcoe_ctlr_device_add(struct device *parent, |
794 | struct fcoe_sysfs_function_template *f, |
795 | int priv_size) |
796 | { |
797 | struct fcoe_ctlr_device *ctlr; |
798 | int error = 0; |
799 | |
800 | ctlr = kzalloc(size: sizeof(struct fcoe_ctlr_device) + priv_size, |
801 | GFP_KERNEL); |
802 | if (!ctlr) |
803 | goto out; |
804 | |
805 | ctlr->id = atomic_inc_return(v: &ctlr_num) - 1; |
806 | ctlr->f = f; |
807 | ctlr->mode = FIP_CONN_TYPE_FABRIC; |
808 | INIT_LIST_HEAD(list: &ctlr->fcfs); |
809 | mutex_init(&ctlr->lock); |
810 | ctlr->dev.parent = parent; |
811 | ctlr->dev.bus = &fcoe_bus_type; |
812 | ctlr->dev.type = &fcoe_ctlr_device_type; |
813 | |
814 | ctlr->fcf_dev_loss_tmo = fcoe_fcf_dev_loss_tmo; |
815 | |
816 | snprintf(buf: ctlr->work_q_name, size: sizeof(ctlr->work_q_name), |
817 | fmt: "ctlr_wq_%d" , ctlr->id); |
818 | ctlr->work_q = create_singlethread_workqueue( |
819 | ctlr->work_q_name); |
820 | if (!ctlr->work_q) |
821 | goto out_del; |
822 | |
823 | snprintf(buf: ctlr->devloss_work_q_name, |
824 | size: sizeof(ctlr->devloss_work_q_name), |
825 | fmt: "ctlr_dl_wq_%d" , ctlr->id); |
826 | ctlr->devloss_work_q = create_singlethread_workqueue( |
827 | ctlr->devloss_work_q_name); |
828 | if (!ctlr->devloss_work_q) |
829 | goto out_del_q; |
830 | |
831 | dev_set_name(dev: &ctlr->dev, name: "ctlr_%d" , ctlr->id); |
832 | error = device_register(dev: &ctlr->dev); |
833 | if (error) { |
834 | destroy_workqueue(wq: ctlr->devloss_work_q); |
835 | destroy_workqueue(wq: ctlr->work_q); |
836 | put_device(dev: &ctlr->dev); |
837 | return NULL; |
838 | } |
839 | |
840 | return ctlr; |
841 | |
842 | out_del_q: |
843 | destroy_workqueue(wq: ctlr->work_q); |
844 | ctlr->work_q = NULL; |
845 | out_del: |
846 | kfree(objp: ctlr); |
847 | out: |
848 | return NULL; |
849 | } |
850 | EXPORT_SYMBOL_GPL(fcoe_ctlr_device_add); |
851 | |
852 | /** |
853 | * fcoe_ctlr_device_delete() - Delete a FIP ctlr and its subtree from sysfs |
854 | * @ctlr: A pointer to the ctlr to be deleted |
855 | * |
856 | * Deletes a FIP ctlr and any fcfs attached |
857 | * to it. Deleting fcfs will cause their childen |
858 | * to be deleted as well. |
859 | * |
860 | * The ctlr is detached from sysfs and it's resources |
861 | * are freed (work q), but the memory is not freed |
862 | * until its last reference is released. |
863 | * |
864 | * This routine expects no locks to be held before |
865 | * calling. |
866 | * |
867 | * TODO: Currently there are no callbacks to clean up LLD data |
868 | * for a fcoe_fcf_device. LLDs must keep this in mind as they need |
869 | * to clean up each of their LLD data for all fcoe_fcf_device before |
870 | * calling fcoe_ctlr_device_delete. |
871 | */ |
872 | void fcoe_ctlr_device_delete(struct fcoe_ctlr_device *ctlr) |
873 | { |
874 | struct fcoe_fcf_device *fcf, *next; |
875 | /* Remove any attached fcfs */ |
876 | mutex_lock(&ctlr->lock); |
877 | list_for_each_entry_safe(fcf, next, |
878 | &ctlr->fcfs, peers) { |
879 | list_del(entry: &fcf->peers); |
880 | fcf->state = FCOE_FCF_STATE_DELETED; |
881 | fcoe_ctlr_device_queue_work(ctlr, work: &fcf->delete_work); |
882 | } |
883 | mutex_unlock(lock: &ctlr->lock); |
884 | |
885 | fcoe_ctlr_device_flush_work(ctlr); |
886 | |
887 | destroy_workqueue(wq: ctlr->devloss_work_q); |
888 | ctlr->devloss_work_q = NULL; |
889 | destroy_workqueue(wq: ctlr->work_q); |
890 | ctlr->work_q = NULL; |
891 | |
892 | device_unregister(dev: &ctlr->dev); |
893 | } |
894 | EXPORT_SYMBOL_GPL(fcoe_ctlr_device_delete); |
895 | |
896 | /** |
897 | * fcoe_fcf_device_final_delete() - Final delete routine |
898 | * @work: The FIP fcf's embedded work struct |
899 | * |
900 | * It is expected that the fcf has been removed from |
901 | * the FIP ctlr's list before calling this routine. |
902 | */ |
903 | static void fcoe_fcf_device_final_delete(struct work_struct *work) |
904 | { |
905 | struct fcoe_fcf_device *fcf = |
906 | container_of(work, struct fcoe_fcf_device, delete_work); |
907 | struct fcoe_ctlr_device *ctlr = fcoe_fcf_dev_to_ctlr_dev(fcf); |
908 | |
909 | /* |
910 | * Cancel any outstanding timers. These should really exist |
911 | * only when rmmod'ing the LLDD and we're asking for |
912 | * immediate termination of the rports |
913 | */ |
914 | if (!cancel_delayed_work(dwork: &fcf->dev_loss_work)) |
915 | fcoe_ctlr_device_flush_devloss(ctlr); |
916 | |
917 | device_unregister(dev: &fcf->dev); |
918 | } |
919 | |
920 | /** |
921 | * fip_timeout_deleted_fcf() - Delete a fcf when the devloss timer fires |
922 | * @work: The FIP fcf's embedded work struct |
923 | * |
924 | * Removes the fcf from the FIP ctlr's list of fcfs and |
925 | * queues the final deletion. |
926 | */ |
927 | static void fip_timeout_deleted_fcf(struct work_struct *work) |
928 | { |
929 | struct fcoe_fcf_device *fcf = |
930 | container_of(work, struct fcoe_fcf_device, dev_loss_work.work); |
931 | struct fcoe_ctlr_device *ctlr = fcoe_fcf_dev_to_ctlr_dev(fcf); |
932 | |
933 | mutex_lock(&ctlr->lock); |
934 | |
935 | /* |
936 | * If the fcf is deleted or reconnected before the timer |
937 | * fires the devloss queue will be flushed, but the state will |
938 | * either be CONNECTED or DELETED. If that is the case we |
939 | * cancel deleting the fcf. |
940 | */ |
941 | if (fcf->state != FCOE_FCF_STATE_DISCONNECTED) |
942 | goto out; |
943 | |
944 | dev_printk(KERN_ERR, &fcf->dev, |
945 | "FIP fcf connection time out: removing fcf\n" ); |
946 | |
947 | list_del(entry: &fcf->peers); |
948 | fcf->state = FCOE_FCF_STATE_DELETED; |
949 | fcoe_ctlr_device_queue_work(ctlr, work: &fcf->delete_work); |
950 | |
951 | out: |
952 | mutex_unlock(lock: &ctlr->lock); |
953 | } |
954 | |
955 | /** |
956 | * fcoe_fcf_device_delete() - Delete a FIP fcf |
957 | * @fcf: Pointer to the fcf which is to be deleted |
958 | * |
959 | * Queues the FIP fcf on the devloss workqueue |
960 | * |
961 | * Expects the ctlr_attrs mutex to be held for fcf |
962 | * state change. |
963 | */ |
964 | void fcoe_fcf_device_delete(struct fcoe_fcf_device *fcf) |
965 | { |
966 | struct fcoe_ctlr_device *ctlr = fcoe_fcf_dev_to_ctlr_dev(fcf); |
967 | int timeout = fcf->dev_loss_tmo; |
968 | |
969 | if (fcf->state != FCOE_FCF_STATE_CONNECTED) |
970 | return; |
971 | |
972 | fcf->state = FCOE_FCF_STATE_DISCONNECTED; |
973 | |
974 | /* |
975 | * FCF will only be re-connected by the LLD calling |
976 | * fcoe_fcf_device_add, and it should be setting up |
977 | * priv then. |
978 | */ |
979 | fcf->priv = NULL; |
980 | |
981 | fcoe_ctlr_device_queue_devloss_work(ctlr, work: &fcf->dev_loss_work, |
982 | delay: timeout * HZ); |
983 | } |
984 | EXPORT_SYMBOL_GPL(fcoe_fcf_device_delete); |
985 | |
986 | /** |
987 | * fcoe_fcf_device_add() - Add a FCoE sysfs fcoe_fcf_device to the system |
988 | * @ctlr: The fcoe_ctlr_device that will be the fcoe_fcf_device parent |
989 | * @new_fcf: A temporary FCF used for lookups on the current list of fcfs |
990 | * |
991 | * Expects to be called with the ctlr->lock held |
992 | */ |
993 | struct fcoe_fcf_device *fcoe_fcf_device_add(struct fcoe_ctlr_device *ctlr, |
994 | struct fcoe_fcf_device *new_fcf) |
995 | { |
996 | struct fcoe_fcf_device *fcf; |
997 | int error = 0; |
998 | |
999 | list_for_each_entry(fcf, &ctlr->fcfs, peers) { |
1000 | if (fcoe_fcf_device_match(new: new_fcf, old: fcf)) { |
1001 | if (fcf->state == FCOE_FCF_STATE_CONNECTED) |
1002 | return fcf; |
1003 | |
1004 | fcf->state = FCOE_FCF_STATE_CONNECTED; |
1005 | |
1006 | if (!cancel_delayed_work(dwork: &fcf->dev_loss_work)) |
1007 | fcoe_ctlr_device_flush_devloss(ctlr); |
1008 | |
1009 | return fcf; |
1010 | } |
1011 | } |
1012 | |
1013 | fcf = kzalloc(size: sizeof(struct fcoe_fcf_device), GFP_ATOMIC); |
1014 | if (unlikely(!fcf)) |
1015 | goto out; |
1016 | |
1017 | INIT_WORK(&fcf->delete_work, fcoe_fcf_device_final_delete); |
1018 | INIT_DELAYED_WORK(&fcf->dev_loss_work, fip_timeout_deleted_fcf); |
1019 | |
1020 | fcf->dev.parent = &ctlr->dev; |
1021 | fcf->dev.bus = &fcoe_bus_type; |
1022 | fcf->dev.type = &fcoe_fcf_device_type; |
1023 | fcf->id = atomic_inc_return(v: &fcf_num) - 1; |
1024 | fcf->state = FCOE_FCF_STATE_UNKNOWN; |
1025 | |
1026 | fcf->dev_loss_tmo = ctlr->fcf_dev_loss_tmo; |
1027 | |
1028 | dev_set_name(dev: &fcf->dev, name: "fcf_%d" , fcf->id); |
1029 | |
1030 | fcf->fabric_name = new_fcf->fabric_name; |
1031 | fcf->switch_name = new_fcf->switch_name; |
1032 | fcf->fc_map = new_fcf->fc_map; |
1033 | fcf->vfid = new_fcf->vfid; |
1034 | memcpy(fcf->mac, new_fcf->mac, ETH_ALEN); |
1035 | fcf->priority = new_fcf->priority; |
1036 | fcf->fka_period = new_fcf->fka_period; |
1037 | fcf->selected = new_fcf->selected; |
1038 | |
1039 | error = device_register(dev: &fcf->dev); |
1040 | if (error) { |
1041 | put_device(dev: &fcf->dev); |
1042 | goto out; |
1043 | } |
1044 | |
1045 | fcf->state = FCOE_FCF_STATE_CONNECTED; |
1046 | list_add_tail(new: &fcf->peers, head: &ctlr->fcfs); |
1047 | |
1048 | return fcf; |
1049 | |
1050 | out: |
1051 | return NULL; |
1052 | } |
1053 | EXPORT_SYMBOL_GPL(fcoe_fcf_device_add); |
1054 | |
1055 | int __init fcoe_sysfs_setup(void) |
1056 | { |
1057 | atomic_set(v: &ctlr_num, i: 0); |
1058 | atomic_set(v: &fcf_num, i: 0); |
1059 | |
1060 | return bus_register(bus: &fcoe_bus_type); |
1061 | } |
1062 | |
1063 | void __exit fcoe_sysfs_teardown(void) |
1064 | { |
1065 | bus_unregister(bus: &fcoe_bus_type); |
1066 | } |
1067 | |