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3699d92a KP |
1 | /******************************************************************************* |
2 | * Filename: tcm_fc.c | |
3 | * | |
4 | * This file contains the configfs implementation for TCM_fc fabric node. | |
5 | * Based on tcm_loop_configfs.c | |
6 | * | |
7 | * Copyright (c) 2010 Cisco Systems, Inc. | |
8 | * Copyright (c) 2009,2010 Rising Tide, Inc. | |
9 | * Copyright (c) 2009,2010 Linux-iSCSI.org | |
10 | * | |
11 | * Copyright (c) 2009,2010 Nicholas A. Bellinger <nab@linux-iscsi.org> | |
12 | * | |
13 | * This program is free software; you can redistribute it and/or modify | |
14 | * it under the terms of the GNU General Public License as published by | |
15 | * the Free Software Foundation; either version 2 of the License, or | |
16 | * (at your option) any later version. | |
17 | * | |
18 | * This program is distributed in the hope that it will be useful, | |
19 | * but WITHOUT ANY WARRANTY; without even the implied warranty of | |
20 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the | |
21 | * GNU General Public License for more details. | |
22 | ****************************************************************************/ | |
23 | ||
24 | #include <linux/module.h> | |
25 | #include <linux/moduleparam.h> | |
3699d92a KP |
26 | #include <generated/utsrelease.h> |
27 | #include <linux/utsname.h> | |
28 | #include <linux/init.h> | |
29 | #include <linux/slab.h> | |
30 | #include <linux/kthread.h> | |
31 | #include <linux/types.h> | |
32 | #include <linux/string.h> | |
33 | #include <linux/configfs.h> | |
635a2b3f | 34 | #include <linux/kernel.h> |
3699d92a KP |
35 | #include <linux/ctype.h> |
36 | #include <asm/unaligned.h> | |
37 | #include <scsi/scsi.h> | |
38 | #include <scsi/scsi_host.h> | |
39 | #include <scsi/scsi_device.h> | |
40 | #include <scsi/scsi_cmnd.h> | |
41 | #include <scsi/libfc.h> | |
42 | ||
43 | #include <target/target_core_base.h> | |
c4795fb2 | 44 | #include <target/target_core_fabric.h> |
3699d92a | 45 | #include <target/target_core_fabric_configfs.h> |
3699d92a KP |
46 | #include <target/configfs_macros.h> |
47 | ||
48 | #include "tcm_fc.h" | |
49 | ||
9ac8928e | 50 | static const struct target_core_fabric_ops ft_fabric_ops; |
3699d92a | 51 | |
705665da | 52 | static LIST_HEAD(ft_wwn_list); |
3699d92a KP |
53 | DEFINE_MUTEX(ft_lport_lock); |
54 | ||
55 | unsigned int ft_debug_logging; | |
56 | module_param_named(debug_logging, ft_debug_logging, int, S_IRUGO|S_IWUSR); | |
57 | MODULE_PARM_DESC(debug_logging, "a bit mask of logging levels"); | |
58 | ||
59 | /* | |
60 | * Parse WWN. | |
61 | * If strict, we require lower-case hex and colon separators to be sure | |
62 | * the name is the same as what would be generated by ft_format_wwn() | |
63 | * so the name and wwn are mapped one-to-one. | |
64 | */ | |
65 | static ssize_t ft_parse_wwn(const char *name, u64 *wwn, int strict) | |
66 | { | |
67 | const char *cp; | |
68 | char c; | |
3699d92a KP |
69 | u32 byte = 0; |
70 | u32 pos = 0; | |
71 | u32 err; | |
635a2b3f | 72 | int val; |
3699d92a KP |
73 | |
74 | *wwn = 0; | |
75 | for (cp = name; cp < &name[FT_NAMELEN - 1]; cp++) { | |
76 | c = *cp; | |
77 | if (c == '\n' && cp[1] == '\0') | |
78 | continue; | |
79 | if (strict && pos++ == 2 && byte++ < 7) { | |
80 | pos = 0; | |
81 | if (c == ':') | |
82 | continue; | |
83 | err = 1; | |
84 | goto fail; | |
85 | } | |
86 | if (c == '\0') { | |
87 | err = 2; | |
88 | if (strict && byte != 8) | |
89 | goto fail; | |
90 | return cp - name; | |
91 | } | |
92 | err = 3; | |
635a2b3f AS |
93 | val = hex_to_bin(c); |
94 | if (val < 0 || (strict && isupper(c))) | |
3699d92a | 95 | goto fail; |
635a2b3f | 96 | *wwn = (*wwn << 4) | val; |
3699d92a KP |
97 | } |
98 | err = 4; | |
99 | fail: | |
6708bb27 | 100 | pr_debug("err %u len %zu pos %u byte %u\n", |
3699d92a KP |
101 | err, cp - name, pos, byte); |
102 | return -1; | |
103 | } | |
104 | ||
105 | ssize_t ft_format_wwn(char *buf, size_t len, u64 wwn) | |
106 | { | |
107 | u8 b[8]; | |
108 | ||
109 | put_unaligned_be64(wwn, b); | |
110 | return snprintf(buf, len, | |
111 | "%2.2x:%2.2x:%2.2x:%2.2x:%2.2x:%2.2x:%2.2x:%2.2x", | |
112 | b[0], b[1], b[2], b[3], b[4], b[5], b[6], b[7]); | |
113 | } | |
114 | ||
115 | static ssize_t ft_wwn_show(void *arg, char *buf) | |
116 | { | |
117 | u64 *wwn = arg; | |
118 | ssize_t len; | |
119 | ||
120 | len = ft_format_wwn(buf, PAGE_SIZE - 2, *wwn); | |
121 | buf[len++] = '\n'; | |
122 | return len; | |
123 | } | |
124 | ||
125 | static ssize_t ft_wwn_store(void *arg, const char *buf, size_t len) | |
126 | { | |
127 | ssize_t ret; | |
128 | u64 wwn; | |
129 | ||
130 | ret = ft_parse_wwn(buf, &wwn, 0); | |
131 | if (ret > 0) | |
132 | *(u64 *)arg = wwn; | |
133 | return ret; | |
134 | } | |
135 | ||
136 | /* | |
137 | * ACL auth ops. | |
138 | */ | |
139 | ||
140 | static ssize_t ft_nacl_show_port_name( | |
141 | struct se_node_acl *se_nacl, | |
142 | char *page) | |
143 | { | |
144 | struct ft_node_acl *acl = container_of(se_nacl, | |
145 | struct ft_node_acl, se_node_acl); | |
146 | ||
147 | return ft_wwn_show(&acl->node_auth.port_name, page); | |
148 | } | |
149 | ||
150 | static ssize_t ft_nacl_store_port_name( | |
151 | struct se_node_acl *se_nacl, | |
152 | const char *page, | |
153 | size_t count) | |
154 | { | |
155 | struct ft_node_acl *acl = container_of(se_nacl, | |
156 | struct ft_node_acl, se_node_acl); | |
157 | ||
158 | return ft_wwn_store(&acl->node_auth.port_name, page, count); | |
159 | } | |
160 | ||
161 | TF_NACL_BASE_ATTR(ft, port_name, S_IRUGO | S_IWUSR); | |
162 | ||
163 | static ssize_t ft_nacl_show_node_name( | |
164 | struct se_node_acl *se_nacl, | |
165 | char *page) | |
166 | { | |
167 | struct ft_node_acl *acl = container_of(se_nacl, | |
168 | struct ft_node_acl, se_node_acl); | |
169 | ||
170 | return ft_wwn_show(&acl->node_auth.node_name, page); | |
171 | } | |
172 | ||
173 | static ssize_t ft_nacl_store_node_name( | |
174 | struct se_node_acl *se_nacl, | |
175 | const char *page, | |
176 | size_t count) | |
177 | { | |
178 | struct ft_node_acl *acl = container_of(se_nacl, | |
179 | struct ft_node_acl, se_node_acl); | |
180 | ||
181 | return ft_wwn_store(&acl->node_auth.node_name, page, count); | |
182 | } | |
183 | ||
184 | TF_NACL_BASE_ATTR(ft, node_name, S_IRUGO | S_IWUSR); | |
185 | ||
186 | static struct configfs_attribute *ft_nacl_base_attrs[] = { | |
187 | &ft_nacl_port_name.attr, | |
188 | &ft_nacl_node_name.attr, | |
189 | NULL, | |
190 | }; | |
191 | ||
192 | /* | |
193 | * ACL ops. | |
194 | */ | |
195 | ||
196 | /* | |
197 | * Add ACL for an initiator. The ACL is named arbitrarily. | |
198 | * The port_name and/or node_name are attributes. | |
199 | */ | |
c7d6a803 | 200 | static int ft_init_nodeacl(struct se_node_acl *nacl, const char *name) |
3699d92a | 201 | { |
c7d6a803 CH |
202 | struct ft_node_acl *acl = |
203 | container_of(nacl, struct ft_node_acl, se_node_acl); | |
3699d92a | 204 | u64 wwpn; |
3699d92a KP |
205 | |
206 | if (ft_parse_wwn(name, &wwpn, 1) < 0) | |
c7d6a803 | 207 | return -EINVAL; |
3699d92a | 208 | |
3699d92a | 209 | acl->node_auth.port_name = wwpn; |
c7d6a803 | 210 | return 0; |
3699d92a KP |
211 | } |
212 | ||
213 | struct ft_node_acl *ft_acl_get(struct ft_tpg *tpg, struct fc_rport_priv *rdata) | |
214 | { | |
215 | struct ft_node_acl *found = NULL; | |
216 | struct ft_node_acl *acl; | |
217 | struct se_portal_group *se_tpg = &tpg->se_tpg; | |
218 | struct se_node_acl *se_acl; | |
219 | ||
403edd78 | 220 | mutex_lock(&se_tpg->acl_node_mutex); |
3699d92a KP |
221 | list_for_each_entry(se_acl, &se_tpg->acl_node_list, acl_list) { |
222 | acl = container_of(se_acl, struct ft_node_acl, se_node_acl); | |
6708bb27 | 223 | pr_debug("acl %p port_name %llx\n", |
3699d92a KP |
224 | acl, (unsigned long long)acl->node_auth.port_name); |
225 | if (acl->node_auth.port_name == rdata->ids.port_name || | |
226 | acl->node_auth.node_name == rdata->ids.node_name) { | |
6708bb27 | 227 | pr_debug("acl %p port_name %llx matched\n", acl, |
3699d92a KP |
228 | (unsigned long long)rdata->ids.port_name); |
229 | found = acl; | |
230 | /* XXX need to hold onto ACL */ | |
231 | break; | |
232 | } | |
233 | } | |
403edd78 | 234 | mutex_unlock(&se_tpg->acl_node_mutex); |
3699d92a KP |
235 | return found; |
236 | } | |
237 | ||
3699d92a KP |
238 | /* |
239 | * local_port port_group (tpg) ops. | |
240 | */ | |
241 | static struct se_portal_group *ft_add_tpg( | |
242 | struct se_wwn *wwn, | |
243 | struct config_group *group, | |
244 | const char *name) | |
245 | { | |
705665da | 246 | struct ft_lport_wwn *ft_wwn; |
3699d92a | 247 | struct ft_tpg *tpg; |
06383f10 | 248 | struct workqueue_struct *wq; |
3699d92a KP |
249 | unsigned long index; |
250 | int ret; | |
251 | ||
6708bb27 | 252 | pr_debug("tcm_fc: add tpg %s\n", name); |
3699d92a KP |
253 | |
254 | /* | |
255 | * Name must be "tpgt_" followed by the index. | |
256 | */ | |
257 | if (strstr(name, "tpgt_") != name) | |
258 | return NULL; | |
57103d7f JH |
259 | |
260 | ret = kstrtoul(name + 5, 10, &index); | |
261 | if (ret) | |
262 | return NULL; | |
263 | if (index > UINT_MAX) | |
3699d92a KP |
264 | return NULL; |
265 | ||
d242c1d7 AG |
266 | if ((index != 1)) { |
267 | pr_err("Error, a single TPG=1 is used for HW port mappings\n"); | |
268 | return ERR_PTR(-ENOSYS); | |
269 | } | |
270 | ||
705665da | 271 | ft_wwn = container_of(wwn, struct ft_lport_wwn, se_wwn); |
3699d92a KP |
272 | tpg = kzalloc(sizeof(*tpg), GFP_KERNEL); |
273 | if (!tpg) | |
274 | return NULL; | |
275 | tpg->index = index; | |
705665da | 276 | tpg->lport_wwn = ft_wwn; |
3699d92a | 277 | INIT_LIST_HEAD(&tpg->lun_list); |
3699d92a | 278 | |
06383f10 MR |
279 | wq = alloc_workqueue("tcm_fc", 0, 1); |
280 | if (!wq) { | |
3699d92a KP |
281 | kfree(tpg); |
282 | return NULL; | |
283 | } | |
284 | ||
9ac8928e | 285 | ret = core_tpg_register(&ft_fabric_ops, wwn, &tpg->se_tpg, |
e4aae5af | 286 | SCSI_PROTOCOL_FCP); |
06383f10 MR |
287 | if (ret < 0) { |
288 | destroy_workqueue(wq); | |
3699d92a KP |
289 | kfree(tpg); |
290 | return NULL; | |
291 | } | |
06383f10 | 292 | tpg->workqueue = wq; |
3699d92a KP |
293 | |
294 | mutex_lock(&ft_lport_lock); | |
705665da | 295 | ft_wwn->tpg = tpg; |
3699d92a KP |
296 | mutex_unlock(&ft_lport_lock); |
297 | ||
298 | return &tpg->se_tpg; | |
299 | } | |
300 | ||
301 | static void ft_del_tpg(struct se_portal_group *se_tpg) | |
302 | { | |
303 | struct ft_tpg *tpg = container_of(se_tpg, struct ft_tpg, se_tpg); | |
705665da | 304 | struct ft_lport_wwn *ft_wwn = tpg->lport_wwn; |
3699d92a | 305 | |
6708bb27 | 306 | pr_debug("del tpg %s\n", |
3699d92a KP |
307 | config_item_name(&tpg->se_tpg.tpg_group.cg_item)); |
308 | ||
58fc73d1 | 309 | destroy_workqueue(tpg->workqueue); |
3699d92a KP |
310 | |
311 | /* Wait for sessions to be freed thru RCU, for BUG_ON below */ | |
312 | synchronize_rcu(); | |
313 | ||
314 | mutex_lock(&ft_lport_lock); | |
705665da | 315 | ft_wwn->tpg = NULL; |
3699d92a KP |
316 | if (tpg->tport) { |
317 | tpg->tport->tpg = NULL; | |
318 | tpg->tport = NULL; | |
319 | } | |
320 | mutex_unlock(&ft_lport_lock); | |
321 | ||
322 | core_tpg_deregister(se_tpg); | |
323 | kfree(tpg); | |
324 | } | |
325 | ||
326 | /* | |
327 | * Verify that an lport is configured to use the tcm_fc module, and return | |
328 | * the target port group that should be used. | |
329 | * | |
330 | * The caller holds ft_lport_lock. | |
331 | */ | |
332 | struct ft_tpg *ft_lport_find_tpg(struct fc_lport *lport) | |
333 | { | |
705665da | 334 | struct ft_lport_wwn *ft_wwn; |
3699d92a | 335 | |
705665da AG |
336 | list_for_each_entry(ft_wwn, &ft_wwn_list, ft_wwn_node) { |
337 | if (ft_wwn->wwpn == lport->wwpn) | |
338 | return ft_wwn->tpg; | |
3699d92a KP |
339 | } |
340 | return NULL; | |
341 | } | |
342 | ||
343 | /* | |
344 | * target config instance ops. | |
345 | */ | |
346 | ||
347 | /* | |
348 | * Add lport to allowed config. | |
349 | * The name is the WWPN in lower-case ASCII, colon-separated bytes. | |
350 | */ | |
0d7cb932 | 351 | static struct se_wwn *ft_add_wwn( |
3699d92a KP |
352 | struct target_fabric_configfs *tf, |
353 | struct config_group *group, | |
354 | const char *name) | |
355 | { | |
705665da AG |
356 | struct ft_lport_wwn *ft_wwn; |
357 | struct ft_lport_wwn *old_ft_wwn; | |
3699d92a KP |
358 | u64 wwpn; |
359 | ||
0d7cb932 | 360 | pr_debug("add wwn %s\n", name); |
3699d92a KP |
361 | if (ft_parse_wwn(name, &wwpn, 1) < 0) |
362 | return NULL; | |
705665da AG |
363 | ft_wwn = kzalloc(sizeof(*ft_wwn), GFP_KERNEL); |
364 | if (!ft_wwn) | |
3699d92a | 365 | return NULL; |
705665da | 366 | ft_wwn->wwpn = wwpn; |
3699d92a KP |
367 | |
368 | mutex_lock(&ft_lport_lock); | |
705665da AG |
369 | list_for_each_entry(old_ft_wwn, &ft_wwn_list, ft_wwn_node) { |
370 | if (old_ft_wwn->wwpn == wwpn) { | |
3699d92a | 371 | mutex_unlock(&ft_lport_lock); |
705665da | 372 | kfree(ft_wwn); |
3699d92a KP |
373 | return NULL; |
374 | } | |
375 | } | |
705665da AG |
376 | list_add_tail(&ft_wwn->ft_wwn_node, &ft_wwn_list); |
377 | ft_format_wwn(ft_wwn->name, sizeof(ft_wwn->name), wwpn); | |
3699d92a KP |
378 | mutex_unlock(&ft_lport_lock); |
379 | ||
705665da | 380 | return &ft_wwn->se_wwn; |
3699d92a KP |
381 | } |
382 | ||
0d7cb932 | 383 | static void ft_del_wwn(struct se_wwn *wwn) |
3699d92a | 384 | { |
705665da AG |
385 | struct ft_lport_wwn *ft_wwn = container_of(wwn, |
386 | struct ft_lport_wwn, se_wwn); | |
3699d92a | 387 | |
0d7cb932 | 388 | pr_debug("del wwn %s\n", ft_wwn->name); |
3699d92a | 389 | mutex_lock(&ft_lport_lock); |
705665da | 390 | list_del(&ft_wwn->ft_wwn_node); |
3699d92a KP |
391 | mutex_unlock(&ft_lport_lock); |
392 | ||
705665da | 393 | kfree(ft_wwn); |
3699d92a KP |
394 | } |
395 | ||
396 | static ssize_t ft_wwn_show_attr_version( | |
397 | struct target_fabric_configfs *tf, | |
398 | char *page) | |
399 | { | |
400 | return sprintf(page, "TCM FC " FT_VERSION " on %s/%s on " | |
401 | ""UTS_RELEASE"\n", utsname()->sysname, utsname()->machine); | |
402 | } | |
403 | ||
404 | TF_WWN_ATTR_RO(ft, version); | |
405 | ||
406 | static struct configfs_attribute *ft_wwn_attrs[] = { | |
407 | &ft_wwn_version.attr, | |
408 | NULL, | |
409 | }; | |
410 | ||
3868e436 CH |
411 | static inline struct ft_tpg *ft_tpg(struct se_portal_group *se_tpg) |
412 | { | |
413 | return container_of(se_tpg, struct ft_tpg, se_tpg); | |
414 | } | |
415 | ||
3699d92a KP |
416 | static char *ft_get_fabric_name(void) |
417 | { | |
418 | return "fc"; | |
419 | } | |
420 | ||
421 | static char *ft_get_fabric_wwn(struct se_portal_group *se_tpg) | |
422 | { | |
3868e436 | 423 | return ft_tpg(se_tpg)->lport_wwn->name; |
3699d92a KP |
424 | } |
425 | ||
426 | static u16 ft_get_tag(struct se_portal_group *se_tpg) | |
427 | { | |
3699d92a KP |
428 | /* |
429 | * This tag is used when forming SCSI Name identifier in EVPD=1 0x83 | |
430 | * to represent the SCSI Target Port. | |
431 | */ | |
3868e436 | 432 | return ft_tpg(se_tpg)->index; |
3699d92a KP |
433 | } |
434 | ||
3699d92a KP |
435 | static int ft_check_false(struct se_portal_group *se_tpg) |
436 | { | |
437 | return 0; | |
438 | } | |
439 | ||
440 | static void ft_set_default_node_attr(struct se_node_acl *se_nacl) | |
441 | { | |
442 | } | |
443 | ||
3699d92a KP |
444 | static u32 ft_tpg_get_inst_index(struct se_portal_group *se_tpg) |
445 | { | |
3868e436 | 446 | return ft_tpg(se_tpg)->index; |
3699d92a KP |
447 | } |
448 | ||
9ac8928e CH |
449 | static const struct target_core_fabric_ops ft_fabric_ops = { |
450 | .module = THIS_MODULE, | |
451 | .name = "fc", | |
144bc4c2 | 452 | .node_acl_size = sizeof(struct ft_node_acl), |
3699d92a | 453 | .get_fabric_name = ft_get_fabric_name, |
3699d92a KP |
454 | .tpg_get_wwn = ft_get_fabric_wwn, |
455 | .tpg_get_tag = ft_get_tag, | |
3699d92a KP |
456 | .tpg_check_demo_mode = ft_check_false, |
457 | .tpg_check_demo_mode_cache = ft_check_false, | |
458 | .tpg_check_demo_mode_write_protect = ft_check_false, | |
459 | .tpg_check_prod_mode_write_protect = ft_check_false, | |
3699d92a KP |
460 | .tpg_get_inst_index = ft_tpg_get_inst_index, |
461 | .check_stop_free = ft_check_stop_free, | |
35462975 | 462 | .release_cmd = ft_release_cmd, |
3699d92a KP |
463 | .shutdown_session = ft_sess_shutdown, |
464 | .close_session = ft_sess_close, | |
3699d92a KP |
465 | .sess_get_index = ft_sess_get_index, |
466 | .sess_get_initiator_sid = NULL, | |
467 | .write_pending = ft_write_pending, | |
468 | .write_pending_status = ft_write_pending_status, | |
469 | .set_default_node_attributes = ft_set_default_node_attr, | |
3699d92a | 470 | .get_cmd_state = ft_get_cmd_state, |
3699d92a KP |
471 | .queue_data_in = ft_queue_data_in, |
472 | .queue_status = ft_queue_status, | |
473 | .queue_tm_rsp = ft_queue_tm_resp, | |
131e6abc | 474 | .aborted_task = ft_aborted_task, |
3699d92a KP |
475 | /* |
476 | * Setup function pointers for generic logic in | |
477 | * target_core_fabric_configfs.c | |
478 | */ | |
0d7cb932 AG |
479 | .fabric_make_wwn = &ft_add_wwn, |
480 | .fabric_drop_wwn = &ft_del_wwn, | |
3699d92a KP |
481 | .fabric_make_tpg = &ft_add_tpg, |
482 | .fabric_drop_tpg = &ft_del_tpg, | |
c7d6a803 | 483 | .fabric_init_nodeacl = &ft_init_nodeacl, |
3699d92a | 484 | |
9ac8928e CH |
485 | .tfc_wwn_attrs = ft_wwn_attrs, |
486 | .tfc_tpg_nacl_base_attrs = ft_nacl_base_attrs, | |
487 | }; | |
3699d92a KP |
488 | |
489 | static struct notifier_block ft_notifier = { | |
490 | .notifier_call = ft_lport_notify | |
491 | }; | |
492 | ||
493 | static int __init ft_init(void) | |
494 | { | |
9ac8928e CH |
495 | int ret; |
496 | ||
497 | ret = target_register_template(&ft_fabric_ops); | |
498 | if (ret) | |
499 | goto out; | |
500 | ||
501 | ret = fc_fc4_register_provider(FC_TYPE_FCP, &ft_prov); | |
502 | if (ret) | |
503 | goto out_unregister_template; | |
504 | ||
3699d92a KP |
505 | blocking_notifier_chain_register(&fc_lport_notifier_head, &ft_notifier); |
506 | fc_lport_iterate(ft_lport_add, NULL); | |
507 | return 0; | |
9ac8928e CH |
508 | |
509 | out_unregister_template: | |
510 | target_unregister_template(&ft_fabric_ops); | |
511 | out: | |
512 | return ret; | |
3699d92a KP |
513 | } |
514 | ||
515 | static void __exit ft_exit(void) | |
516 | { | |
517 | blocking_notifier_chain_unregister(&fc_lport_notifier_head, | |
518 | &ft_notifier); | |
519 | fc_fc4_deregister_provider(FC_TYPE_FCP, &ft_prov); | |
520 | fc_lport_iterate(ft_lport_del, NULL); | |
9ac8928e | 521 | target_unregister_template(&ft_fabric_ops); |
3699d92a KP |
522 | synchronize_rcu(); |
523 | } | |
524 | ||
3699d92a KP |
525 | MODULE_DESCRIPTION("FC TCM fabric driver " FT_VERSION); |
526 | MODULE_LICENSE("GPL"); | |
527 | module_init(ft_init); | |
528 | module_exit(ft_exit); |