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1da177e4 LT |
1 | /* |
2 | * Copyright (C)2003,2004 USAGI/WIDE Project | |
3 | * | |
4 | * This program is free software; you can redistribute it and/or modify | |
5 | * it under the terms of the GNU General Public License as published by | |
6 | * the Free Software Foundation; either version 2 of the License, or | |
7 | * (at your option) any later version. | |
8 | * | |
9 | * This program is distributed in the hope that it will be useful, | |
10 | * but WITHOUT ANY WARRANTY; without even the implied warranty of | |
11 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the | |
12 | * GNU General Public License for more details. | |
13 | * | |
14 | * You should have received a copy of the GNU General Public License | |
15 | * along with this program; if not, write to the Free Software | |
16 | * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA | |
17 | * | |
18 | * Authors Mitsuru KANDA <mk@linux-ipv6.org> | |
19 | * YOSHIFUJI Hideaki <yoshfuji@linux-ipv6.org> | |
20 | * | |
21 | * Based on net/ipv4/xfrm4_tunnel.c | |
22 | * | |
23 | */ | |
1da177e4 LT |
24 | #include <linux/module.h> |
25 | #include <linux/xfrm.h> | |
26 | #include <linux/list.h> | |
27 | #include <net/ip.h> | |
28 | #include <net/xfrm.h> | |
29 | #include <net/ipv6.h> | |
1da177e4 LT |
30 | #include <linux/ipv6.h> |
31 | #include <linux/icmpv6.h> | |
4a3e2f71 | 32 | #include <linux/mutex.h> |
1da177e4 LT |
33 | |
34 | #ifdef CONFIG_IPV6_XFRM6_TUNNEL_DEBUG | |
35 | # define X6TDEBUG 3 | |
36 | #else | |
37 | # define X6TDEBUG 1 | |
38 | #endif | |
39 | ||
40 | #define X6TPRINTK(fmt, args...) printk(fmt, ## args) | |
41 | #define X6TNOPRINTK(fmt, args...) do { ; } while(0) | |
42 | ||
43 | #if X6TDEBUG >= 1 | |
44 | # define X6TPRINTK1 X6TPRINTK | |
45 | #else | |
46 | # define X6TPRINTK1 X6TNOPRINTK | |
47 | #endif | |
48 | ||
49 | #if X6TDEBUG >= 3 | |
50 | # define X6TPRINTK3 X6TPRINTK | |
51 | #else | |
52 | # define X6TPRINTK3 X6TNOPRINTK | |
53 | #endif | |
54 | ||
55 | /* | |
56 | * xfrm_tunnel_spi things are for allocating unique id ("spi") | |
57 | * per xfrm_address_t. | |
58 | */ | |
59 | struct xfrm6_tunnel_spi { | |
60 | struct hlist_node list_byaddr; | |
61 | struct hlist_node list_byspi; | |
62 | xfrm_address_t addr; | |
63 | u32 spi; | |
64 | atomic_t refcnt; | |
65 | #ifdef XFRM6_TUNNEL_SPI_MAGIC | |
66 | u32 magic; | |
67 | #endif | |
68 | }; | |
69 | ||
70 | #ifdef CONFIG_IPV6_XFRM6_TUNNEL_DEBUG | |
71 | # define XFRM6_TUNNEL_SPI_MAGIC 0xdeadbeef | |
72 | #endif | |
73 | ||
74 | static DEFINE_RWLOCK(xfrm6_tunnel_spi_lock); | |
75 | ||
76 | static u32 xfrm6_tunnel_spi; | |
77 | ||
78 | #define XFRM6_TUNNEL_SPI_MIN 1 | |
79 | #define XFRM6_TUNNEL_SPI_MAX 0xffffffff | |
80 | ||
ba89966c | 81 | static kmem_cache_t *xfrm6_tunnel_spi_kmem __read_mostly; |
1da177e4 LT |
82 | |
83 | #define XFRM6_TUNNEL_SPI_BYADDR_HSIZE 256 | |
84 | #define XFRM6_TUNNEL_SPI_BYSPI_HSIZE 256 | |
85 | ||
86 | static struct hlist_head xfrm6_tunnel_spi_byaddr[XFRM6_TUNNEL_SPI_BYADDR_HSIZE]; | |
87 | static struct hlist_head xfrm6_tunnel_spi_byspi[XFRM6_TUNNEL_SPI_BYSPI_HSIZE]; | |
88 | ||
89 | #ifdef XFRM6_TUNNEL_SPI_MAGIC | |
90 | static int x6spi_check_magic(const struct xfrm6_tunnel_spi *x6spi, | |
91 | const char *name) | |
92 | { | |
93 | if (unlikely(x6spi->magic != XFRM6_TUNNEL_SPI_MAGIC)) { | |
94 | X6TPRINTK3(KERN_DEBUG "%s(): x6spi object " | |
95 | "at %p has corrupted magic %08x " | |
96 | "(should be %08x)\n", | |
97 | name, x6spi, x6spi->magic, XFRM6_TUNNEL_SPI_MAGIC); | |
98 | return -1; | |
99 | } | |
100 | return 0; | |
101 | } | |
102 | #else | |
103 | static int inline x6spi_check_magic(const struct xfrm6_tunnel_spi *x6spi, | |
104 | const char *name) | |
105 | { | |
106 | return 0; | |
107 | } | |
108 | #endif | |
109 | ||
110 | #define X6SPI_CHECK_MAGIC(x6spi) x6spi_check_magic((x6spi), __FUNCTION__) | |
111 | ||
112 | ||
113 | static unsigned inline xfrm6_tunnel_spi_hash_byaddr(xfrm_address_t *addr) | |
114 | { | |
115 | unsigned h; | |
116 | ||
117 | X6TPRINTK3(KERN_DEBUG "%s(addr=%p)\n", __FUNCTION__, addr); | |
118 | ||
119 | h = addr->a6[0] ^ addr->a6[1] ^ addr->a6[2] ^ addr->a6[3]; | |
120 | h ^= h >> 16; | |
121 | h ^= h >> 8; | |
122 | h &= XFRM6_TUNNEL_SPI_BYADDR_HSIZE - 1; | |
123 | ||
124 | X6TPRINTK3(KERN_DEBUG "%s() = %u\n", __FUNCTION__, h); | |
125 | ||
126 | return h; | |
127 | } | |
128 | ||
129 | static unsigned inline xfrm6_tunnel_spi_hash_byspi(u32 spi) | |
130 | { | |
131 | return spi % XFRM6_TUNNEL_SPI_BYSPI_HSIZE; | |
132 | } | |
133 | ||
134 | ||
135 | static int xfrm6_tunnel_spi_init(void) | |
136 | { | |
137 | int i; | |
138 | ||
139 | X6TPRINTK3(KERN_DEBUG "%s()\n", __FUNCTION__); | |
140 | ||
141 | xfrm6_tunnel_spi = 0; | |
142 | xfrm6_tunnel_spi_kmem = kmem_cache_create("xfrm6_tunnel_spi", | |
143 | sizeof(struct xfrm6_tunnel_spi), | |
144 | 0, SLAB_HWCACHE_ALIGN, | |
145 | NULL, NULL); | |
146 | if (!xfrm6_tunnel_spi_kmem) { | |
147 | X6TPRINTK1(KERN_ERR | |
148 | "%s(): failed to allocate xfrm6_tunnel_spi_kmem\n", | |
149 | __FUNCTION__); | |
150 | return -ENOMEM; | |
151 | } | |
152 | ||
153 | for (i = 0; i < XFRM6_TUNNEL_SPI_BYADDR_HSIZE; i++) | |
154 | INIT_HLIST_HEAD(&xfrm6_tunnel_spi_byaddr[i]); | |
155 | for (i = 0; i < XFRM6_TUNNEL_SPI_BYSPI_HSIZE; i++) | |
156 | INIT_HLIST_HEAD(&xfrm6_tunnel_spi_byspi[i]); | |
157 | return 0; | |
158 | } | |
159 | ||
160 | static void xfrm6_tunnel_spi_fini(void) | |
161 | { | |
162 | int i; | |
163 | ||
164 | X6TPRINTK3(KERN_DEBUG "%s()\n", __FUNCTION__); | |
165 | ||
166 | for (i = 0; i < XFRM6_TUNNEL_SPI_BYADDR_HSIZE; i++) { | |
167 | if (!hlist_empty(&xfrm6_tunnel_spi_byaddr[i])) | |
168 | goto err; | |
169 | } | |
170 | for (i = 0; i < XFRM6_TUNNEL_SPI_BYSPI_HSIZE; i++) { | |
171 | if (!hlist_empty(&xfrm6_tunnel_spi_byspi[i])) | |
172 | goto err; | |
173 | } | |
174 | kmem_cache_destroy(xfrm6_tunnel_spi_kmem); | |
175 | xfrm6_tunnel_spi_kmem = NULL; | |
176 | return; | |
177 | err: | |
178 | X6TPRINTK1(KERN_ERR "%s(): table is not empty\n", __FUNCTION__); | |
179 | return; | |
180 | } | |
181 | ||
182 | static struct xfrm6_tunnel_spi *__xfrm6_tunnel_spi_lookup(xfrm_address_t *saddr) | |
183 | { | |
184 | struct xfrm6_tunnel_spi *x6spi; | |
185 | struct hlist_node *pos; | |
186 | ||
187 | X6TPRINTK3(KERN_DEBUG "%s(saddr=%p)\n", __FUNCTION__, saddr); | |
188 | ||
189 | hlist_for_each_entry(x6spi, pos, | |
190 | &xfrm6_tunnel_spi_byaddr[xfrm6_tunnel_spi_hash_byaddr(saddr)], | |
191 | list_byaddr) { | |
192 | if (memcmp(&x6spi->addr, saddr, sizeof(x6spi->addr)) == 0) { | |
193 | X6SPI_CHECK_MAGIC(x6spi); | |
194 | X6TPRINTK3(KERN_DEBUG "%s() = %p(%u)\n", __FUNCTION__, x6spi, x6spi->spi); | |
195 | return x6spi; | |
196 | } | |
197 | } | |
198 | ||
199 | X6TPRINTK3(KERN_DEBUG "%s() = NULL(0)\n", __FUNCTION__); | |
200 | return NULL; | |
201 | } | |
202 | ||
203 | u32 xfrm6_tunnel_spi_lookup(xfrm_address_t *saddr) | |
204 | { | |
205 | struct xfrm6_tunnel_spi *x6spi; | |
206 | u32 spi; | |
207 | ||
208 | X6TPRINTK3(KERN_DEBUG "%s(saddr=%p)\n", __FUNCTION__, saddr); | |
209 | ||
210 | read_lock_bh(&xfrm6_tunnel_spi_lock); | |
211 | x6spi = __xfrm6_tunnel_spi_lookup(saddr); | |
212 | spi = x6spi ? x6spi->spi : 0; | |
213 | read_unlock_bh(&xfrm6_tunnel_spi_lock); | |
214 | return spi; | |
215 | } | |
216 | ||
217 | EXPORT_SYMBOL(xfrm6_tunnel_spi_lookup); | |
218 | ||
219 | static u32 __xfrm6_tunnel_alloc_spi(xfrm_address_t *saddr) | |
220 | { | |
221 | u32 spi; | |
222 | struct xfrm6_tunnel_spi *x6spi; | |
223 | struct hlist_node *pos; | |
224 | unsigned index; | |
225 | ||
226 | X6TPRINTK3(KERN_DEBUG "%s(saddr=%p)\n", __FUNCTION__, saddr); | |
227 | ||
228 | if (xfrm6_tunnel_spi < XFRM6_TUNNEL_SPI_MIN || | |
229 | xfrm6_tunnel_spi >= XFRM6_TUNNEL_SPI_MAX) | |
230 | xfrm6_tunnel_spi = XFRM6_TUNNEL_SPI_MIN; | |
231 | else | |
232 | xfrm6_tunnel_spi++; | |
233 | ||
234 | for (spi = xfrm6_tunnel_spi; spi <= XFRM6_TUNNEL_SPI_MAX; spi++) { | |
235 | index = xfrm6_tunnel_spi_hash_byspi(spi); | |
236 | hlist_for_each_entry(x6spi, pos, | |
237 | &xfrm6_tunnel_spi_byspi[index], | |
238 | list_byspi) { | |
239 | if (x6spi->spi == spi) | |
240 | goto try_next_1; | |
241 | } | |
242 | xfrm6_tunnel_spi = spi; | |
243 | goto alloc_spi; | |
244 | try_next_1:; | |
245 | } | |
246 | for (spi = XFRM6_TUNNEL_SPI_MIN; spi < xfrm6_tunnel_spi; spi++) { | |
247 | index = xfrm6_tunnel_spi_hash_byspi(spi); | |
248 | hlist_for_each_entry(x6spi, pos, | |
249 | &xfrm6_tunnel_spi_byspi[index], | |
250 | list_byspi) { | |
251 | if (x6spi->spi == spi) | |
252 | goto try_next_2; | |
253 | } | |
254 | xfrm6_tunnel_spi = spi; | |
255 | goto alloc_spi; | |
256 | try_next_2:; | |
257 | } | |
258 | spi = 0; | |
259 | goto out; | |
260 | alloc_spi: | |
46b86a2d | 261 | X6TPRINTK3(KERN_DEBUG "%s(): allocate new spi for " NIP6_FMT "\n", |
1da177e4 LT |
262 | __FUNCTION__, |
263 | NIP6(*(struct in6_addr *)saddr)); | |
264 | x6spi = kmem_cache_alloc(xfrm6_tunnel_spi_kmem, SLAB_ATOMIC); | |
265 | if (!x6spi) { | |
266 | X6TPRINTK1(KERN_ERR "%s(): kmem_cache_alloc() failed\n", | |
267 | __FUNCTION__); | |
268 | goto out; | |
269 | } | |
270 | #ifdef XFRM6_TUNNEL_SPI_MAGIC | |
271 | x6spi->magic = XFRM6_TUNNEL_SPI_MAGIC; | |
272 | #endif | |
273 | memcpy(&x6spi->addr, saddr, sizeof(x6spi->addr)); | |
274 | x6spi->spi = spi; | |
275 | atomic_set(&x6spi->refcnt, 1); | |
276 | ||
277 | hlist_add_head(&x6spi->list_byspi, &xfrm6_tunnel_spi_byspi[index]); | |
278 | ||
279 | index = xfrm6_tunnel_spi_hash_byaddr(saddr); | |
280 | hlist_add_head(&x6spi->list_byaddr, &xfrm6_tunnel_spi_byaddr[index]); | |
281 | X6SPI_CHECK_MAGIC(x6spi); | |
282 | out: | |
283 | X6TPRINTK3(KERN_DEBUG "%s() = %u\n", __FUNCTION__, spi); | |
284 | return spi; | |
285 | } | |
286 | ||
287 | u32 xfrm6_tunnel_alloc_spi(xfrm_address_t *saddr) | |
288 | { | |
289 | struct xfrm6_tunnel_spi *x6spi; | |
290 | u32 spi; | |
291 | ||
292 | X6TPRINTK3(KERN_DEBUG "%s(saddr=%p)\n", __FUNCTION__, saddr); | |
293 | ||
294 | write_lock_bh(&xfrm6_tunnel_spi_lock); | |
295 | x6spi = __xfrm6_tunnel_spi_lookup(saddr); | |
296 | if (x6spi) { | |
297 | atomic_inc(&x6spi->refcnt); | |
298 | spi = x6spi->spi; | |
299 | } else | |
300 | spi = __xfrm6_tunnel_alloc_spi(saddr); | |
301 | write_unlock_bh(&xfrm6_tunnel_spi_lock); | |
302 | ||
303 | X6TPRINTK3(KERN_DEBUG "%s() = %u\n", __FUNCTION__, spi); | |
304 | ||
305 | return spi; | |
306 | } | |
307 | ||
308 | EXPORT_SYMBOL(xfrm6_tunnel_alloc_spi); | |
309 | ||
310 | void xfrm6_tunnel_free_spi(xfrm_address_t *saddr) | |
311 | { | |
312 | struct xfrm6_tunnel_spi *x6spi; | |
313 | struct hlist_node *pos, *n; | |
314 | ||
315 | X6TPRINTK3(KERN_DEBUG "%s(saddr=%p)\n", __FUNCTION__, saddr); | |
316 | ||
317 | write_lock_bh(&xfrm6_tunnel_spi_lock); | |
318 | ||
319 | hlist_for_each_entry_safe(x6spi, pos, n, | |
320 | &xfrm6_tunnel_spi_byaddr[xfrm6_tunnel_spi_hash_byaddr(saddr)], | |
321 | list_byaddr) | |
322 | { | |
323 | if (memcmp(&x6spi->addr, saddr, sizeof(x6spi->addr)) == 0) { | |
46b86a2d JP |
324 | X6TPRINTK3(KERN_DEBUG "%s(): x6spi object for " NIP6_FMT |
325 | " found at %p\n", | |
1da177e4 LT |
326 | __FUNCTION__, |
327 | NIP6(*(struct in6_addr *)saddr), | |
328 | x6spi); | |
329 | X6SPI_CHECK_MAGIC(x6spi); | |
330 | if (atomic_dec_and_test(&x6spi->refcnt)) { | |
331 | hlist_del(&x6spi->list_byaddr); | |
332 | hlist_del(&x6spi->list_byspi); | |
333 | kmem_cache_free(xfrm6_tunnel_spi_kmem, x6spi); | |
334 | break; | |
335 | } | |
336 | } | |
337 | } | |
338 | write_unlock_bh(&xfrm6_tunnel_spi_lock); | |
339 | } | |
340 | ||
341 | EXPORT_SYMBOL(xfrm6_tunnel_free_spi); | |
342 | ||
343 | static int xfrm6_tunnel_output(struct xfrm_state *x, struct sk_buff *skb) | |
344 | { | |
345 | struct ipv6hdr *top_iph; | |
346 | ||
347 | top_iph = (struct ipv6hdr *)skb->data; | |
348 | top_iph->payload_len = htons(skb->len - sizeof(struct ipv6hdr)); | |
349 | ||
350 | return 0; | |
351 | } | |
352 | ||
e695633e | 353 | static int xfrm6_tunnel_input(struct xfrm_state *x, struct sk_buff *skb) |
1da177e4 LT |
354 | { |
355 | return 0; | |
356 | } | |
357 | ||
d2acc347 | 358 | static int xfrm6_tunnel_rcv(struct sk_buff *skb) |
1da177e4 | 359 | { |
1da177e4 LT |
360 | struct ipv6hdr *iph = skb->nh.ipv6h; |
361 | u32 spi; | |
362 | ||
1da177e4 | 363 | spi = xfrm6_tunnel_spi_lookup((xfrm_address_t *)&iph->saddr); |
d2acc347 | 364 | return xfrm6_rcv_spi(skb, spi); |
1da177e4 LT |
365 | } |
366 | ||
d2acc347 HX |
367 | static int xfrm6_tunnel_err(struct sk_buff *skb, struct inet6_skb_parm *opt, |
368 | int type, int code, int offset, __u32 info) | |
1da177e4 | 369 | { |
1da177e4 LT |
370 | /* xfrm6_tunnel native err handling */ |
371 | switch (type) { | |
372 | case ICMPV6_DEST_UNREACH: | |
373 | switch (code) { | |
374 | case ICMPV6_NOROUTE: | |
375 | case ICMPV6_ADM_PROHIBITED: | |
376 | case ICMPV6_NOT_NEIGHBOUR: | |
377 | case ICMPV6_ADDR_UNREACH: | |
378 | case ICMPV6_PORT_UNREACH: | |
379 | default: | |
380 | X6TPRINTK3(KERN_DEBUG | |
381 | "xfrm6_tunnel: Destination Unreach.\n"); | |
382 | break; | |
383 | } | |
384 | break; | |
385 | case ICMPV6_PKT_TOOBIG: | |
386 | X6TPRINTK3(KERN_DEBUG | |
387 | "xfrm6_tunnel: Packet Too Big.\n"); | |
388 | break; | |
389 | case ICMPV6_TIME_EXCEED: | |
390 | switch (code) { | |
391 | case ICMPV6_EXC_HOPLIMIT: | |
392 | X6TPRINTK3(KERN_DEBUG | |
393 | "xfrm6_tunnel: Too small Hoplimit.\n"); | |
394 | break; | |
395 | case ICMPV6_EXC_FRAGTIME: | |
396 | default: | |
397 | break; | |
398 | } | |
399 | break; | |
400 | case ICMPV6_PARAMPROB: | |
401 | switch (code) { | |
402 | case ICMPV6_HDR_FIELD: break; | |
403 | case ICMPV6_UNK_NEXTHDR: break; | |
404 | case ICMPV6_UNK_OPTION: break; | |
405 | } | |
406 | break; | |
407 | default: | |
408 | break; | |
409 | } | |
d2acc347 HX |
410 | |
411 | return 0; | |
1da177e4 LT |
412 | } |
413 | ||
72cb6962 | 414 | static int xfrm6_tunnel_init_state(struct xfrm_state *x) |
1da177e4 LT |
415 | { |
416 | if (!x->props.mode) | |
417 | return -EINVAL; | |
418 | ||
419 | if (x->encap) | |
420 | return -EINVAL; | |
421 | ||
422 | x->props.header_len = sizeof(struct ipv6hdr); | |
423 | ||
424 | return 0; | |
425 | } | |
426 | ||
427 | static void xfrm6_tunnel_destroy(struct xfrm_state *x) | |
428 | { | |
429 | xfrm6_tunnel_free_spi((xfrm_address_t *)&x->props.saddr); | |
430 | } | |
431 | ||
432 | static struct xfrm_type xfrm6_tunnel_type = { | |
433 | .description = "IP6IP6", | |
434 | .owner = THIS_MODULE, | |
435 | .proto = IPPROTO_IPV6, | |
436 | .init_state = xfrm6_tunnel_init_state, | |
437 | .destructor = xfrm6_tunnel_destroy, | |
438 | .input = xfrm6_tunnel_input, | |
439 | .output = xfrm6_tunnel_output, | |
440 | }; | |
441 | ||
d2acc347 | 442 | static struct xfrm6_tunnel xfrm6_tunnel_handler = { |
1da177e4 | 443 | .handler = xfrm6_tunnel_rcv, |
d2acc347 HX |
444 | .err_handler = xfrm6_tunnel_err, |
445 | .priority = 2, | |
1da177e4 LT |
446 | }; |
447 | ||
448 | static int __init xfrm6_tunnel_init(void) | |
449 | { | |
450 | X6TPRINTK3(KERN_DEBUG "%s()\n", __FUNCTION__); | |
451 | ||
452 | if (xfrm_register_type(&xfrm6_tunnel_type, AF_INET6) < 0) { | |
453 | X6TPRINTK1(KERN_ERR | |
454 | "xfrm6_tunnel init: can't add xfrm type\n"); | |
455 | return -EAGAIN; | |
456 | } | |
d2acc347 | 457 | if (xfrm6_tunnel_register(&xfrm6_tunnel_handler)) { |
1da177e4 | 458 | X6TPRINTK1(KERN_ERR |
d2acc347 | 459 | "xfrm6_tunnel init(): can't add handler\n"); |
1da177e4 LT |
460 | xfrm_unregister_type(&xfrm6_tunnel_type, AF_INET6); |
461 | return -EAGAIN; | |
462 | } | |
463 | if (xfrm6_tunnel_spi_init() < 0) { | |
464 | X6TPRINTK1(KERN_ERR | |
465 | "xfrm6_tunnel init: failed to initialize spi\n"); | |
d2acc347 | 466 | xfrm6_tunnel_deregister(&xfrm6_tunnel_handler); |
1da177e4 LT |
467 | xfrm_unregister_type(&xfrm6_tunnel_type, AF_INET6); |
468 | return -EAGAIN; | |
469 | } | |
470 | return 0; | |
471 | } | |
472 | ||
473 | static void __exit xfrm6_tunnel_fini(void) | |
474 | { | |
475 | X6TPRINTK3(KERN_DEBUG "%s()\n", __FUNCTION__); | |
476 | ||
477 | xfrm6_tunnel_spi_fini(); | |
d2acc347 | 478 | if (xfrm6_tunnel_deregister(&xfrm6_tunnel_handler)) |
1da177e4 | 479 | X6TPRINTK1(KERN_ERR |
d2acc347 | 480 | "xfrm6_tunnel close: can't remove handler\n"); |
1da177e4 LT |
481 | if (xfrm_unregister_type(&xfrm6_tunnel_type, AF_INET6) < 0) |
482 | X6TPRINTK1(KERN_ERR | |
483 | "xfrm6_tunnel close: can't remove xfrm type\n"); | |
484 | } | |
485 | ||
486 | module_init(xfrm6_tunnel_init); | |
487 | module_exit(xfrm6_tunnel_fini); | |
488 | MODULE_LICENSE("GPL"); |