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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
19
20
21
22#include "libfcoe.h"
23
24static atomic_t ctlr_num;
25static atomic_t fcf_num;
26
27
28
29
30
31static unsigned int fcoe_fcf_dev_loss_tmo = 1800;
32
33module_param_named(fcf_dev_loss_tmo, fcoe_fcf_dev_loss_tmo,
34 uint, S_IRUGO|S_IWUSR);
35MODULE_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
42
43
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
98
99static int fcoe_str_to_dev_loss(const char *buf, unsigned long *val)
100{
101 int ret;
102
103 ret = kstrtoul(buf, 0, val);
104 if (ret)
105 return -EINVAL;
106
107
108
109 if (*val > UINT_MAX)
110 return -EINVAL;
111
112 return 0;
113}
114
115static 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
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) \
133struct 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) \
137static 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) \
149static 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) \
162static 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) \
171static 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) \
210static 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
217static char *fip_conn_type_names[] = {
218 [ FIP_CONN_TYPE_UNKNOWN ] = "Unknown",
219 [ FIP_CONN_TYPE_FABRIC ] = "Fabric",
220 [ FIP_CONN_TYPE_VN2VN ] = "VN2VN",
221};
222fcoe_enum_name_search(ctlr_mode, fip_conn_type, fip_conn_type_names)
223
224static 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(buf, fip_conn_type_names[i]) == 0)
230 return i;
231 }
232
233 return FIP_CONN_TYPE_UNKNOWN;
234}
235
236static char *fcf_state_names[] = {
237 [ FCOE_FCF_STATE_UNKNOWN ] = "Unknown",
238 [ FCOE_FCF_STATE_DISCONNECTED ] = "Disconnected",
239 [ FCOE_FCF_STATE_CONNECTED ] = "Connected",
240};
241fcoe_enum_name_search(fcf_state, fcf_state, fcf_state_names)
242#define FCOE_FCF_STATE_MAX_NAMELEN 50
243
244static 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(fcf->state);
251 if (!name)
252 return -EINVAL;
253 return snprintf(buf, FCOE_FCF_STATE_MAX_NAMELEN, "%s\n", name);
254}
255static FCOE_DEVICE_ATTR(fcf, state, S_IRUGO, show_fcf_state, NULL);
256
257#define FCOE_MAX_MODENAME_LEN 20
258static 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(ctlr->mode);
266 if (!name)
267 return -EINVAL;
268 return snprintf(buf, FCOE_MAX_MODENAME_LEN,
269 "%s\n", name);
270}
271
272static 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(mode, buf, 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(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
318static FCOE_DEVICE_ATTR(ctlr, mode, S_IRUGO | S_IWUSR,
319 show_ctlr_mode, store_ctlr_mode);
320
321static 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
358static char *ctlr_enabled_state_names[] = {
359 [ FCOE_CTLR_ENABLED ] = "1",
360 [ FCOE_CTLR_DISABLED ] = "0",
361};
362fcoe_enum_name_search(ctlr_enabled_state, ctlr_enabled_state,
363 ctlr_enabled_state_names)
364#define FCOE_CTLR_ENABLED_MAX_NAMELEN 50
365
366static 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(ctlr->enabled);
374 if (!name)
375 return -EINVAL;
376 return snprintf(buf, FCOE_CTLR_ENABLED_MAX_NAMELEN,
377 "%s\n", name);
378}
379
380static FCOE_DEVICE_ATTR(ctlr, enabled, S_IRUGO | S_IWUSR,
381 show_ctlr_enabled_state,
382 store_ctlr_enabled);
383
384static 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(&fip->ctlr_mutex);
396 return count;
397 }
398 if (buf[0] == '0') {
399 fip->fip_resp = 0;
400 mutex_unlock(&fip->ctlr_mutex);
401 return count;
402 }
403 }
404 mutex_unlock(&fip->ctlr_mutex);
405 return -EINVAL;
406}
407
408static 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, "%d\n", fip->fip_resp ? 1 : 0);
416}
417
418static FCOE_DEVICE_ATTR(ctlr, fip_vlan_responder, S_IRUGO | S_IWUSR,
419 show_ctlr_fip_resp,
420 store_ctlr_fip_resp);
421
422static ssize_t
423fcoe_ctlr_var_store(u32 *var, const char *buf, size_t count)
424{
425 int err;
426 unsigned long v;
427
428 err = kstrtoul(buf, 10, &v);
429 if (err || v > UINT_MAX)
430 return -EINVAL;
431
432 *var = v;
433
434 return count;
435}
436
437static 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_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(&ctlr->lp->r_a_tov, buf, count);
448 return -ENOTSUPP;
449}
450
451static 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_dev);
457
458 return sprintf(buf, "%d\n", ctlr->lp->r_a_tov);
459}
460
461static FCOE_DEVICE_ATTR(ctlr, r_a_tov, S_IRUGO | S_IWUSR,
462 show_ctlr_r_a_tov, store_ctlr_r_a_tov);
463
464static 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_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(&ctlr->lp->e_d_tov, buf, count);
475 return -ENOTSUPP;
476}
477
478static 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_dev);
484
485 return sprintf(buf, "%d\n", ctlr->lp->e_d_tov);
486}
487
488static FCOE_DEVICE_ATTR(ctlr, e_d_tov, S_IRUGO | S_IWUSR,
489 show_ctlr_e_d_tov, store_ctlr_e_d_tov);
490
491static ssize_t
492store_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);
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(&ctlr->lock);
510 return count;
511}
512fcoe_ctlr_private_show_function(fcf_dev_loss_tmo, "%d\n", 20, );
513static 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
518fcoe_ctlr_rd_attr(link_fail, "%u\n", 20);
519fcoe_ctlr_rd_attr(vlink_fail, "%u\n", 20);
520fcoe_ctlr_rd_attr(miss_fka, "%u\n", 20);
521fcoe_ctlr_rd_attr(symb_err, "%u\n", 20);
522fcoe_ctlr_rd_attr(err_block, "%u\n", 20);
523fcoe_ctlr_rd_attr(fcs_error, "%u\n", 20);
524
525fcoe_fcf_private_rd_attr_cast(fabric_name, "0x%llx\n", 20, unsigned long long);
526fcoe_fcf_private_rd_attr_cast(switch_name, "0x%llx\n", 20, unsigned long long);
527fcoe_fcf_private_rd_attr(priority, "%u\n", 20);
528fcoe_fcf_private_rd_attr(fc_map, "0x%x\n", 20);
529fcoe_fcf_private_rd_attr(vfid, "%u\n", 20);
530fcoe_fcf_private_rd_attr(mac, "%pM\n", 20);
531fcoe_fcf_private_rd_attr(fka_period, "%u\n", 20);
532fcoe_fcf_rd_attr(selected, "%u\n", 20);
533fcoe_fcf_rd_attr(vlan_id, "%u\n", 20);
534
535fcoe_fcf_private_show_function(dev_loss_tmo, "%d\n", 20, )
536static ssize_t
537store_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);
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}
553static 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
557static 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
567static struct attribute_group fcoe_ctlr_lesb_attr_group = {
568 .name = "lesb",
569 .attrs = fcoe_ctlr_lesb_attrs,
570};
571
572static 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
582static struct attribute_group fcoe_ctlr_attr_group = {
583 .attrs = fcoe_ctlr_attrs,
584};
585
586static const struct attribute_group *fcoe_ctlr_attr_groups[] = {
587 &fcoe_ctlr_attr_group,
588 &fcoe_ctlr_lesb_attr_group,
589 NULL,
590};
591
592static 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
607static struct attribute_group fcoe_fcf_attr_group = {
608 .attrs = fcoe_fcf_attrs,
609};
610
611static const struct attribute_group *fcoe_fcf_attr_groups[] = {
612 &fcoe_fcf_attr_group,
613 NULL,
614};
615
616static struct bus_type fcoe_bus_type;
617
618static 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
628
629
630
631
632static void fcoe_ctlr_device_release(struct device *dev)
633{
634 struct fcoe_ctlr_device *ctlr = dev_to_ctlr(dev);
635 kfree(ctlr);
636}
637
638
639
640
641
642
643
644static void fcoe_fcf_device_release(struct device *dev)
645{
646 struct fcoe_fcf_device *fcf = dev_to_fcf(dev);
647 kfree(fcf);
648}
649
650static 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
656static 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
662static ssize_t ctlr_create_store(struct bus_type *bus, const char *buf,
663 size_t count)
664{
665 return fcoe_ctlr_create_store(bus, buf, count);
666}
667static BUS_ATTR_WO(ctlr_create);
668
669static ssize_t ctlr_destroy_store(struct bus_type *bus, const char *buf,
670 size_t count)
671{
672 return fcoe_ctlr_destroy_store(bus, buf, count);
673}
674static BUS_ATTR_WO(ctlr_destroy);
675
676static struct attribute *fcoe_bus_attrs[] = {
677 &bus_attr_ctlr_create.attr,
678 &bus_attr_ctlr_destroy.attr,
679 NULL,
680};
681ATTRIBUTE_GROUPS(fcoe_bus);
682
683static struct bus_type fcoe_bus_type = {
684 .name = "fcoe",
685 .match = &fcoe_bus_match,
686 .bus_groups = fcoe_bus_groups,
687};
688
689
690
691
692
693static 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
708
709
710
711
712
713
714static 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
731
732
733static 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
748
749
750
751
752
753
754
755static 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), work, delay);
769}
770
771static 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(new->mac, old->mac))
778 return 1;
779 return 0;
780}
781
782
783
784
785
786
787
788
789
790
791
792
793struct 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(sizeof(struct fcoe_ctlr_device) + priv_size,
801 GFP_KERNEL);
802 if (!ctlr)
803 goto out;
804
805 ctlr->id = atomic_inc_return(&ctlr_num) - 1;
806 ctlr->f = f;
807 ctlr->mode = FIP_CONN_TYPE_FABRIC;
808 INIT_LIST_HEAD(&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(ctlr->work_q_name, sizeof(ctlr->work_q_name),
817 "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(ctlr->devloss_work_q_name,
824 sizeof(ctlr->devloss_work_q_name),
825 "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(&ctlr->dev, "ctlr_%d", ctlr->id);
832 error = device_register(&ctlr->dev);
833 if (error)
834 goto out_del_q2;
835
836 return ctlr;
837
838out_del_q2:
839 destroy_workqueue(ctlr->devloss_work_q);
840 ctlr->devloss_work_q = NULL;
841out_del_q:
842 destroy_workqueue(ctlr->work_q);
843 ctlr->work_q = NULL;
844out_del:
845 kfree(ctlr);
846out:
847 return NULL;
848}
849EXPORT_SYMBOL_GPL(fcoe_ctlr_device_add);
850
851
852
853
854
855
856
857
858
859
860
861
862
863
864
865
866
867
868
869
870
871void fcoe_ctlr_device_delete(struct fcoe_ctlr_device *ctlr)
872{
873 struct fcoe_fcf_device *fcf, *next;
874
875 mutex_lock(&ctlr->lock);
876 list_for_each_entry_safe(fcf, next,
877 &ctlr->fcfs, peers) {
878 list_del(&fcf->peers);
879 fcf->state = FCOE_FCF_STATE_DELETED;
880 fcoe_ctlr_device_queue_work(ctlr, &fcf->delete_work);
881 }
882 mutex_unlock(&ctlr->lock);
883
884 fcoe_ctlr_device_flush_work(ctlr);
885
886 destroy_workqueue(ctlr->devloss_work_q);
887 ctlr->devloss_work_q = NULL;
888 destroy_workqueue(ctlr->work_q);
889 ctlr->work_q = NULL;
890
891 device_unregister(&ctlr->dev);
892}
893EXPORT_SYMBOL_GPL(fcoe_ctlr_device_delete);
894
895
896
897
898
899
900
901
902static void fcoe_fcf_device_final_delete(struct work_struct *work)
903{
904 struct fcoe_fcf_device *fcf =
905 container_of(work, struct fcoe_fcf_device, delete_work);
906 struct fcoe_ctlr_device *ctlr = fcoe_fcf_dev_to_ctlr_dev(fcf);
907
908
909
910
911
912
913 if (!cancel_delayed_work(&fcf->dev_loss_work))
914 fcoe_ctlr_device_flush_devloss(ctlr);
915
916 device_unregister(&fcf->dev);
917}
918
919
920
921
922
923
924
925
926static void fip_timeout_deleted_fcf(struct work_struct *work)
927{
928 struct fcoe_fcf_device *fcf =
929 container_of(work, struct fcoe_fcf_device, dev_loss_work.work);
930 struct fcoe_ctlr_device *ctlr = fcoe_fcf_dev_to_ctlr_dev(fcf);
931
932 mutex_lock(&ctlr->lock);
933
934
935
936
937
938
939
940 if (fcf->state != FCOE_FCF_STATE_DISCONNECTED)
941 goto out;
942
943 dev_printk(KERN_ERR, &fcf->dev,
944 "FIP fcf connection time out: removing fcf\n");
945
946 list_del(&fcf->peers);
947 fcf->state = FCOE_FCF_STATE_DELETED;
948 fcoe_ctlr_device_queue_work(ctlr, &fcf->delete_work);
949
950out:
951 mutex_unlock(&ctlr->lock);
952}
953
954
955
956
957
958
959
960
961
962
963void fcoe_fcf_device_delete(struct fcoe_fcf_device *fcf)
964{
965 struct fcoe_ctlr_device *ctlr = fcoe_fcf_dev_to_ctlr_dev(fcf);
966 int timeout = fcf->dev_loss_tmo;
967
968 if (fcf->state != FCOE_FCF_STATE_CONNECTED)
969 return;
970
971 fcf->state = FCOE_FCF_STATE_DISCONNECTED;
972
973
974
975
976
977
978 fcf->priv = NULL;
979
980 fcoe_ctlr_device_queue_devloss_work(ctlr, &fcf->dev_loss_work,
981 timeout * HZ);
982}
983EXPORT_SYMBOL_GPL(fcoe_fcf_device_delete);
984
985
986
987
988
989
990
991
992struct fcoe_fcf_device *fcoe_fcf_device_add(struct fcoe_ctlr_device *ctlr,
993 struct fcoe_fcf_device *new_fcf)
994{
995 struct fcoe_fcf_device *fcf;
996 int error = 0;
997
998 list_for_each_entry(fcf, &ctlr->fcfs, peers) {
999 if (fcoe_fcf_device_match(new_fcf, fcf)) {
1000 if (fcf->state == FCOE_FCF_STATE_CONNECTED)
1001 return fcf;
1002
1003 fcf->state = FCOE_FCF_STATE_CONNECTED;
1004
1005 if (!cancel_delayed_work(&fcf->dev_loss_work))
1006 fcoe_ctlr_device_flush_devloss(ctlr);
1007
1008 return fcf;
1009 }
1010 }
1011
1012 fcf = kzalloc(sizeof(struct fcoe_fcf_device), GFP_ATOMIC);
1013 if (unlikely(!fcf))
1014 goto out;
1015
1016 INIT_WORK(&fcf->delete_work, fcoe_fcf_device_final_delete);
1017 INIT_DELAYED_WORK(&fcf->dev_loss_work, fip_timeout_deleted_fcf);
1018
1019 fcf->dev.parent = &ctlr->dev;
1020 fcf->dev.bus = &fcoe_bus_type;
1021 fcf->dev.type = &fcoe_fcf_device_type;
1022 fcf->id = atomic_inc_return(&fcf_num) - 1;
1023 fcf->state = FCOE_FCF_STATE_UNKNOWN;
1024
1025 fcf->dev_loss_tmo = ctlr->fcf_dev_loss_tmo;
1026
1027 dev_set_name(&fcf->dev, "fcf_%d", fcf->id);
1028
1029 fcf->fabric_name = new_fcf->fabric_name;
1030 fcf->switch_name = new_fcf->switch_name;
1031 fcf->fc_map = new_fcf->fc_map;
1032 fcf->vfid = new_fcf->vfid;
1033 memcpy(fcf->mac, new_fcf->mac, ETH_ALEN);
1034 fcf->priority = new_fcf->priority;
1035 fcf->fka_period = new_fcf->fka_period;
1036 fcf->selected = new_fcf->selected;
1037
1038 error = device_register(&fcf->dev);
1039 if (error)
1040 goto out_del;
1041
1042 fcf->state = FCOE_FCF_STATE_CONNECTED;
1043 list_add_tail(&fcf->peers, &ctlr->fcfs);
1044
1045 return fcf;
1046
1047out_del:
1048 kfree(fcf);
1049out:
1050 return NULL;
1051}
1052EXPORT_SYMBOL_GPL(fcoe_fcf_device_add);
1053
1054int __init fcoe_sysfs_setup(void)
1055{
1056 int error;
1057
1058 atomic_set(&ctlr_num, 0);
1059 atomic_set(&fcf_num, 0);
1060
1061 error = bus_register(&fcoe_bus_type);
1062 if (error)
1063 return error;
1064
1065 return 0;
1066}
1067
1068void __exit fcoe_sysfs_teardown(void)
1069{
1070 bus_unregister(&fcoe_bus_type);
1071}
1072