Commit | Line | Data |
---|---|---|
1da177e4 LT |
1 | /* |
2 | * net/sched/cls_route.c ROUTE4 classifier. | |
3 | * | |
4 | * This program is free software; you can redistribute it and/or | |
5 | * modify it under the terms of the GNU General Public License | |
6 | * as published by the Free Software Foundation; either version | |
7 | * 2 of the License, or (at your option) any later version. | |
8 | * | |
9 | * Authors: Alexey Kuznetsov, <kuznet@ms2.inr.ac.ru> | |
10 | */ | |
11 | ||
12 | #include <linux/module.h> | |
1da177e4 LT |
13 | #include <linux/types.h> |
14 | #include <linux/kernel.h> | |
1da177e4 | 15 | #include <linux/string.h> |
1da177e4 | 16 | #include <linux/errno.h> |
1da177e4 | 17 | #include <linux/skbuff.h> |
0ba48053 PM |
18 | #include <net/dst.h> |
19 | #include <net/route.h> | |
20 | #include <net/netlink.h> | |
1da177e4 LT |
21 | #include <net/act_api.h> |
22 | #include <net/pkt_cls.h> | |
23 | ||
24 | /* | |
25 | 1. For now we assume that route tags < 256. | |
26 | It allows to use direct table lookups, instead of hash tables. | |
27 | 2. For now we assume that "from TAG" and "fromdev DEV" statements | |
28 | are mutually exclusive. | |
29 | 3. "to TAG from ANY" has higher priority, than "to ANY from XXX" | |
30 | */ | |
31 | ||
32 | struct route4_fastmap | |
33 | { | |
34 | struct route4_filter *filter; | |
35 | u32 id; | |
36 | int iif; | |
37 | }; | |
38 | ||
39 | struct route4_head | |
40 | { | |
41 | struct route4_fastmap fastmap[16]; | |
42 | struct route4_bucket *table[256+1]; | |
43 | }; | |
44 | ||
45 | struct route4_bucket | |
46 | { | |
47 | /* 16 FROM buckets + 16 IIF buckets + 1 wildcard bucket */ | |
48 | struct route4_filter *ht[16+16+1]; | |
49 | }; | |
50 | ||
51 | struct route4_filter | |
52 | { | |
53 | struct route4_filter *next; | |
54 | u32 id; | |
55 | int iif; | |
56 | ||
57 | struct tcf_result res; | |
58 | struct tcf_exts exts; | |
59 | u32 handle; | |
60 | struct route4_bucket *bkt; | |
61 | }; | |
62 | ||
63 | #define ROUTE4_FAILURE ((struct route4_filter*)(-1L)) | |
64 | ||
5239008b | 65 | static const struct tcf_ext_map route_ext_map = { |
1da177e4 LT |
66 | .police = TCA_ROUTE4_POLICE, |
67 | .action = TCA_ROUTE4_ACT | |
68 | }; | |
69 | ||
70 | static __inline__ int route4_fastmap_hash(u32 id, int iif) | |
71 | { | |
72 | return id&0xF; | |
73 | } | |
74 | ||
75 | static inline | |
15b458fa | 76 | void route4_reset_fastmap(struct Qdisc *q, struct route4_head *head, u32 id) |
1da177e4 | 77 | { |
102396ae | 78 | spinlock_t *root_lock = qdisc_root_sleeping_lock(q); |
15b458fa DM |
79 | |
80 | spin_lock_bh(root_lock); | |
1da177e4 | 81 | memset(head->fastmap, 0, sizeof(head->fastmap)); |
15b458fa | 82 | spin_unlock_bh(root_lock); |
1da177e4 LT |
83 | } |
84 | ||
b6f99a21 | 85 | static inline void |
1da177e4 LT |
86 | route4_set_fastmap(struct route4_head *head, u32 id, int iif, |
87 | struct route4_filter *f) | |
88 | { | |
89 | int h = route4_fastmap_hash(id, iif); | |
90 | head->fastmap[h].id = id; | |
91 | head->fastmap[h].iif = iif; | |
92 | head->fastmap[h].filter = f; | |
93 | } | |
94 | ||
95 | static __inline__ int route4_hash_to(u32 id) | |
96 | { | |
97 | return id&0xFF; | |
98 | } | |
99 | ||
100 | static __inline__ int route4_hash_from(u32 id) | |
101 | { | |
102 | return (id>>16)&0xF; | |
103 | } | |
104 | ||
105 | static __inline__ int route4_hash_iif(int iif) | |
106 | { | |
107 | return 16 + ((iif>>16)&0xF); | |
108 | } | |
109 | ||
110 | static __inline__ int route4_hash_wild(void) | |
111 | { | |
112 | return 32; | |
113 | } | |
114 | ||
115 | #define ROUTE4_APPLY_RESULT() \ | |
116 | { \ | |
117 | *res = f->res; \ | |
118 | if (tcf_exts_is_available(&f->exts)) { \ | |
119 | int r = tcf_exts_exec(skb, &f->exts, res); \ | |
120 | if (r < 0) { \ | |
121 | dont_cache = 1; \ | |
122 | continue; \ | |
123 | } \ | |
124 | return r; \ | |
125 | } else if (!dont_cache) \ | |
126 | route4_set_fastmap(head, id, iif, f); \ | |
127 | return 0; \ | |
128 | } | |
129 | ||
130 | static int route4_classify(struct sk_buff *skb, struct tcf_proto *tp, | |
131 | struct tcf_result *res) | |
132 | { | |
133 | struct route4_head *head = (struct route4_head*)tp->root; | |
134 | struct dst_entry *dst; | |
135 | struct route4_bucket *b; | |
136 | struct route4_filter *f; | |
137 | u32 id, h; | |
138 | int iif, dont_cache = 0; | |
139 | ||
adf30907 | 140 | if ((dst = skb_dst(skb)) == NULL) |
1da177e4 LT |
141 | goto failure; |
142 | ||
143 | id = dst->tclassid; | |
144 | if (head == NULL) | |
145 | goto old_method; | |
146 | ||
147 | iif = ((struct rtable*)dst)->fl.iif; | |
148 | ||
149 | h = route4_fastmap_hash(id, iif); | |
150 | if (id == head->fastmap[h].id && | |
151 | iif == head->fastmap[h].iif && | |
152 | (f = head->fastmap[h].filter) != NULL) { | |
153 | if (f == ROUTE4_FAILURE) | |
154 | goto failure; | |
155 | ||
156 | *res = f->res; | |
157 | return 0; | |
158 | } | |
159 | ||
160 | h = route4_hash_to(id); | |
161 | ||
162 | restart: | |
163 | if ((b = head->table[h]) != NULL) { | |
164 | for (f = b->ht[route4_hash_from(id)]; f; f = f->next) | |
165 | if (f->id == id) | |
166 | ROUTE4_APPLY_RESULT(); | |
167 | ||
168 | for (f = b->ht[route4_hash_iif(iif)]; f; f = f->next) | |
169 | if (f->iif == iif) | |
170 | ROUTE4_APPLY_RESULT(); | |
171 | ||
172 | for (f = b->ht[route4_hash_wild()]; f; f = f->next) | |
173 | ROUTE4_APPLY_RESULT(); | |
174 | ||
175 | } | |
176 | if (h < 256) { | |
177 | h = 256; | |
178 | id &= ~0xFFFF; | |
179 | goto restart; | |
180 | } | |
181 | ||
182 | if (!dont_cache) | |
183 | route4_set_fastmap(head, id, iif, ROUTE4_FAILURE); | |
184 | failure: | |
185 | return -1; | |
186 | ||
187 | old_method: | |
188 | if (id && (TC_H_MAJ(id) == 0 || | |
189 | !(TC_H_MAJ(id^tp->q->handle)))) { | |
190 | res->classid = id; | |
191 | res->class = 0; | |
192 | return 0; | |
193 | } | |
194 | return -1; | |
195 | } | |
196 | ||
197 | static inline u32 to_hash(u32 id) | |
198 | { | |
199 | u32 h = id&0xFF; | |
200 | if (id&0x8000) | |
201 | h += 256; | |
202 | return h; | |
203 | } | |
204 | ||
205 | static inline u32 from_hash(u32 id) | |
206 | { | |
207 | id &= 0xFFFF; | |
208 | if (id == 0xFFFF) | |
209 | return 32; | |
210 | if (!(id & 0x8000)) { | |
211 | if (id > 255) | |
212 | return 256; | |
213 | return id&0xF; | |
214 | } | |
215 | return 16 + (id&0xF); | |
216 | } | |
217 | ||
218 | static unsigned long route4_get(struct tcf_proto *tp, u32 handle) | |
219 | { | |
220 | struct route4_head *head = (struct route4_head*)tp->root; | |
221 | struct route4_bucket *b; | |
222 | struct route4_filter *f; | |
223 | unsigned h1, h2; | |
224 | ||
225 | if (!head) | |
226 | return 0; | |
227 | ||
228 | h1 = to_hash(handle); | |
229 | if (h1 > 256) | |
230 | return 0; | |
231 | ||
232 | h2 = from_hash(handle>>16); | |
233 | if (h2 > 32) | |
234 | return 0; | |
235 | ||
236 | if ((b = head->table[h1]) != NULL) { | |
237 | for (f = b->ht[h2]; f; f = f->next) | |
238 | if (f->handle == handle) | |
239 | return (unsigned long)f; | |
240 | } | |
241 | return 0; | |
242 | } | |
243 | ||
244 | static void route4_put(struct tcf_proto *tp, unsigned long f) | |
245 | { | |
246 | } | |
247 | ||
248 | static int route4_init(struct tcf_proto *tp) | |
249 | { | |
250 | return 0; | |
251 | } | |
252 | ||
253 | static inline void | |
254 | route4_delete_filter(struct tcf_proto *tp, struct route4_filter *f) | |
255 | { | |
256 | tcf_unbind_filter(tp, &f->res); | |
257 | tcf_exts_destroy(tp, &f->exts); | |
258 | kfree(f); | |
259 | } | |
260 | ||
261 | static void route4_destroy(struct tcf_proto *tp) | |
262 | { | |
47a1a1d4 | 263 | struct route4_head *head = tp->root; |
1da177e4 LT |
264 | int h1, h2; |
265 | ||
266 | if (head == NULL) | |
267 | return; | |
268 | ||
269 | for (h1=0; h1<=256; h1++) { | |
270 | struct route4_bucket *b; | |
271 | ||
272 | if ((b = head->table[h1]) != NULL) { | |
273 | for (h2=0; h2<=32; h2++) { | |
274 | struct route4_filter *f; | |
275 | ||
276 | while ((f = b->ht[h2]) != NULL) { | |
277 | b->ht[h2] = f->next; | |
278 | route4_delete_filter(tp, f); | |
279 | } | |
280 | } | |
281 | kfree(b); | |
282 | } | |
283 | } | |
284 | kfree(head); | |
285 | } | |
286 | ||
287 | static int route4_delete(struct tcf_proto *tp, unsigned long arg) | |
288 | { | |
289 | struct route4_head *head = (struct route4_head*)tp->root; | |
290 | struct route4_filter **fp, *f = (struct route4_filter*)arg; | |
291 | unsigned h = 0; | |
292 | struct route4_bucket *b; | |
293 | int i; | |
294 | ||
295 | if (!head || !f) | |
296 | return -EINVAL; | |
297 | ||
298 | h = f->handle; | |
299 | b = f->bkt; | |
300 | ||
301 | for (fp = &b->ht[from_hash(h>>16)]; *fp; fp = &(*fp)->next) { | |
302 | if (*fp == f) { | |
303 | tcf_tree_lock(tp); | |
304 | *fp = f->next; | |
305 | tcf_tree_unlock(tp); | |
306 | ||
15b458fa | 307 | route4_reset_fastmap(tp->q, head, f->id); |
1da177e4 LT |
308 | route4_delete_filter(tp, f); |
309 | ||
310 | /* Strip tree */ | |
311 | ||
312 | for (i=0; i<=32; i++) | |
313 | if (b->ht[i]) | |
314 | return 0; | |
315 | ||
316 | /* OK, session has no flows */ | |
317 | tcf_tree_lock(tp); | |
318 | head->table[to_hash(h)] = NULL; | |
319 | tcf_tree_unlock(tp); | |
320 | ||
321 | kfree(b); | |
322 | return 0; | |
323 | } | |
324 | } | |
325 | return 0; | |
326 | } | |
327 | ||
6fa8c014 PM |
328 | static const struct nla_policy route4_policy[TCA_ROUTE4_MAX + 1] = { |
329 | [TCA_ROUTE4_CLASSID] = { .type = NLA_U32 }, | |
330 | [TCA_ROUTE4_TO] = { .type = NLA_U32 }, | |
331 | [TCA_ROUTE4_FROM] = { .type = NLA_U32 }, | |
332 | [TCA_ROUTE4_IIF] = { .type = NLA_U32 }, | |
333 | }; | |
334 | ||
1da177e4 LT |
335 | static int route4_set_parms(struct tcf_proto *tp, unsigned long base, |
336 | struct route4_filter *f, u32 handle, struct route4_head *head, | |
add93b61 | 337 | struct nlattr **tb, struct nlattr *est, int new) |
1da177e4 LT |
338 | { |
339 | int err; | |
340 | u32 id = 0, to = 0, nhandle = 0x8000; | |
341 | struct route4_filter *fp; | |
342 | unsigned int h1; | |
343 | struct route4_bucket *b; | |
344 | struct tcf_exts e; | |
345 | ||
346 | err = tcf_exts_validate(tp, tb, est, &e, &route_ext_map); | |
347 | if (err < 0) | |
348 | return err; | |
349 | ||
350 | err = -EINVAL; | |
add93b61 | 351 | if (tb[TCA_ROUTE4_TO]) { |
1da177e4 LT |
352 | if (new && handle & 0x8000) |
353 | goto errout; | |
1587bac4 | 354 | to = nla_get_u32(tb[TCA_ROUTE4_TO]); |
1da177e4 LT |
355 | if (to > 0xFF) |
356 | goto errout; | |
357 | nhandle = to; | |
358 | } | |
359 | ||
add93b61 PM |
360 | if (tb[TCA_ROUTE4_FROM]) { |
361 | if (tb[TCA_ROUTE4_IIF]) | |
1da177e4 | 362 | goto errout; |
1587bac4 | 363 | id = nla_get_u32(tb[TCA_ROUTE4_FROM]); |
1da177e4 LT |
364 | if (id > 0xFF) |
365 | goto errout; | |
366 | nhandle |= id << 16; | |
add93b61 | 367 | } else if (tb[TCA_ROUTE4_IIF]) { |
1587bac4 | 368 | id = nla_get_u32(tb[TCA_ROUTE4_IIF]); |
1da177e4 LT |
369 | if (id > 0x7FFF) |
370 | goto errout; | |
371 | nhandle |= (id | 0x8000) << 16; | |
372 | } else | |
373 | nhandle |= 0xFFFF << 16; | |
374 | ||
375 | if (handle && new) { | |
376 | nhandle |= handle & 0x7F00; | |
377 | if (nhandle != handle) | |
378 | goto errout; | |
379 | } | |
380 | ||
381 | h1 = to_hash(nhandle); | |
382 | if ((b = head->table[h1]) == NULL) { | |
383 | err = -ENOBUFS; | |
0da974f4 | 384 | b = kzalloc(sizeof(struct route4_bucket), GFP_KERNEL); |
1da177e4 LT |
385 | if (b == NULL) |
386 | goto errout; | |
1da177e4 LT |
387 | |
388 | tcf_tree_lock(tp); | |
389 | head->table[h1] = b; | |
390 | tcf_tree_unlock(tp); | |
391 | } else { | |
392 | unsigned int h2 = from_hash(nhandle >> 16); | |
393 | err = -EEXIST; | |
394 | for (fp = b->ht[h2]; fp; fp = fp->next) | |
395 | if (fp->handle == f->handle) | |
396 | goto errout; | |
397 | } | |
398 | ||
399 | tcf_tree_lock(tp); | |
add93b61 | 400 | if (tb[TCA_ROUTE4_TO]) |
1da177e4 LT |
401 | f->id = to; |
402 | ||
add93b61 | 403 | if (tb[TCA_ROUTE4_FROM]) |
1da177e4 | 404 | f->id = to | id<<16; |
add93b61 | 405 | else if (tb[TCA_ROUTE4_IIF]) |
1da177e4 LT |
406 | f->iif = id; |
407 | ||
408 | f->handle = nhandle; | |
409 | f->bkt = b; | |
410 | tcf_tree_unlock(tp); | |
411 | ||
add93b61 | 412 | if (tb[TCA_ROUTE4_CLASSID]) { |
1587bac4 | 413 | f->res.classid = nla_get_u32(tb[TCA_ROUTE4_CLASSID]); |
1da177e4 LT |
414 | tcf_bind_filter(tp, &f->res, base); |
415 | } | |
416 | ||
417 | tcf_exts_change(tp, &f->exts, &e); | |
418 | ||
419 | return 0; | |
420 | errout: | |
421 | tcf_exts_destroy(tp, &e); | |
422 | return err; | |
423 | } | |
424 | ||
425 | static int route4_change(struct tcf_proto *tp, unsigned long base, | |
426 | u32 handle, | |
add93b61 | 427 | struct nlattr **tca, |
1da177e4 LT |
428 | unsigned long *arg) |
429 | { | |
430 | struct route4_head *head = tp->root; | |
431 | struct route4_filter *f, *f1, **fp; | |
432 | struct route4_bucket *b; | |
add93b61 PM |
433 | struct nlattr *opt = tca[TCA_OPTIONS]; |
434 | struct nlattr *tb[TCA_ROUTE4_MAX + 1]; | |
1da177e4 LT |
435 | unsigned int h, th; |
436 | u32 old_handle = 0; | |
437 | int err; | |
438 | ||
439 | if (opt == NULL) | |
440 | return handle ? -EINVAL : 0; | |
441 | ||
6fa8c014 | 442 | err = nla_parse_nested(tb, TCA_ROUTE4_MAX, opt, route4_policy); |
cee63723 PM |
443 | if (err < 0) |
444 | return err; | |
1da177e4 LT |
445 | |
446 | if ((f = (struct route4_filter*)*arg) != NULL) { | |
447 | if (f->handle != handle && handle) | |
448 | return -EINVAL; | |
449 | ||
450 | if (f->bkt) | |
451 | old_handle = f->handle; | |
452 | ||
453 | err = route4_set_parms(tp, base, f, handle, head, tb, | |
add93b61 | 454 | tca[TCA_RATE], 0); |
1da177e4 LT |
455 | if (err < 0) |
456 | return err; | |
457 | ||
458 | goto reinsert; | |
459 | } | |
460 | ||
461 | err = -ENOBUFS; | |
462 | if (head == NULL) { | |
0da974f4 | 463 | head = kzalloc(sizeof(struct route4_head), GFP_KERNEL); |
1da177e4 LT |
464 | if (head == NULL) |
465 | goto errout; | |
1da177e4 LT |
466 | |
467 | tcf_tree_lock(tp); | |
468 | tp->root = head; | |
469 | tcf_tree_unlock(tp); | |
470 | } | |
471 | ||
0da974f4 | 472 | f = kzalloc(sizeof(struct route4_filter), GFP_KERNEL); |
1da177e4 LT |
473 | if (f == NULL) |
474 | goto errout; | |
1da177e4 LT |
475 | |
476 | err = route4_set_parms(tp, base, f, handle, head, tb, | |
add93b61 | 477 | tca[TCA_RATE], 1); |
1da177e4 LT |
478 | if (err < 0) |
479 | goto errout; | |
480 | ||
481 | reinsert: | |
482 | h = from_hash(f->handle >> 16); | |
483 | for (fp = &f->bkt->ht[h]; (f1=*fp) != NULL; fp = &f1->next) | |
484 | if (f->handle < f1->handle) | |
485 | break; | |
486 | ||
487 | f->next = f1; | |
488 | tcf_tree_lock(tp); | |
489 | *fp = f; | |
490 | ||
491 | if (old_handle && f->handle != old_handle) { | |
492 | th = to_hash(old_handle); | |
493 | h = from_hash(old_handle >> 16); | |
494 | if ((b = head->table[th]) != NULL) { | |
495 | for (fp = &b->ht[h]; *fp; fp = &(*fp)->next) { | |
496 | if (*fp == f) { | |
497 | *fp = f->next; | |
498 | break; | |
499 | } | |
500 | } | |
501 | } | |
502 | } | |
503 | tcf_tree_unlock(tp); | |
504 | ||
15b458fa | 505 | route4_reset_fastmap(tp->q, head, f->id); |
1da177e4 LT |
506 | *arg = (unsigned long)f; |
507 | return 0; | |
508 | ||
509 | errout: | |
a51482bd | 510 | kfree(f); |
1da177e4 LT |
511 | return err; |
512 | } | |
513 | ||
514 | static void route4_walk(struct tcf_proto *tp, struct tcf_walker *arg) | |
515 | { | |
516 | struct route4_head *head = tp->root; | |
517 | unsigned h, h1; | |
518 | ||
519 | if (head == NULL) | |
520 | arg->stop = 1; | |
521 | ||
522 | if (arg->stop) | |
523 | return; | |
524 | ||
525 | for (h = 0; h <= 256; h++) { | |
526 | struct route4_bucket *b = head->table[h]; | |
527 | ||
528 | if (b) { | |
529 | for (h1 = 0; h1 <= 32; h1++) { | |
530 | struct route4_filter *f; | |
531 | ||
532 | for (f = b->ht[h1]; f; f = f->next) { | |
533 | if (arg->count < arg->skip) { | |
534 | arg->count++; | |
535 | continue; | |
536 | } | |
537 | if (arg->fn(tp, (unsigned long)f, arg) < 0) { | |
538 | arg->stop = 1; | |
539 | return; | |
540 | } | |
541 | arg->count++; | |
542 | } | |
543 | } | |
544 | } | |
545 | } | |
546 | } | |
547 | ||
548 | static int route4_dump(struct tcf_proto *tp, unsigned long fh, | |
549 | struct sk_buff *skb, struct tcmsg *t) | |
550 | { | |
551 | struct route4_filter *f = (struct route4_filter*)fh; | |
27a884dc | 552 | unsigned char *b = skb_tail_pointer(skb); |
4b3550ef | 553 | struct nlattr *nest; |
1da177e4 LT |
554 | u32 id; |
555 | ||
556 | if (f == NULL) | |
557 | return skb->len; | |
558 | ||
559 | t->tcm_handle = f->handle; | |
560 | ||
4b3550ef PM |
561 | nest = nla_nest_start(skb, TCA_OPTIONS); |
562 | if (nest == NULL) | |
563 | goto nla_put_failure; | |
1da177e4 LT |
564 | |
565 | if (!(f->handle&0x8000)) { | |
566 | id = f->id&0xFF; | |
24beeab5 | 567 | NLA_PUT_U32(skb, TCA_ROUTE4_TO, id); |
1da177e4 LT |
568 | } |
569 | if (f->handle&0x80000000) { | |
570 | if ((f->handle>>16) != 0xFFFF) | |
24beeab5 | 571 | NLA_PUT_U32(skb, TCA_ROUTE4_IIF, f->iif); |
1da177e4 LT |
572 | } else { |
573 | id = f->id>>16; | |
24beeab5 | 574 | NLA_PUT_U32(skb, TCA_ROUTE4_FROM, id); |
1da177e4 LT |
575 | } |
576 | if (f->res.classid) | |
24beeab5 | 577 | NLA_PUT_U32(skb, TCA_ROUTE4_CLASSID, f->res.classid); |
1da177e4 LT |
578 | |
579 | if (tcf_exts_dump(skb, &f->exts, &route_ext_map) < 0) | |
add93b61 | 580 | goto nla_put_failure; |
1da177e4 | 581 | |
4b3550ef | 582 | nla_nest_end(skb, nest); |
1da177e4 LT |
583 | |
584 | if (tcf_exts_dump_stats(skb, &f->exts, &route_ext_map) < 0) | |
add93b61 | 585 | goto nla_put_failure; |
1da177e4 LT |
586 | |
587 | return skb->len; | |
588 | ||
add93b61 | 589 | nla_put_failure: |
dc5fc579 | 590 | nlmsg_trim(skb, b); |
1da177e4 LT |
591 | return -1; |
592 | } | |
593 | ||
2eb9d75c | 594 | static struct tcf_proto_ops cls_route4_ops __read_mostly = { |
1da177e4 LT |
595 | .kind = "route", |
596 | .classify = route4_classify, | |
597 | .init = route4_init, | |
598 | .destroy = route4_destroy, | |
599 | .get = route4_get, | |
600 | .put = route4_put, | |
601 | .change = route4_change, | |
602 | .delete = route4_delete, | |
603 | .walk = route4_walk, | |
604 | .dump = route4_dump, | |
605 | .owner = THIS_MODULE, | |
606 | }; | |
607 | ||
608 | static int __init init_route4(void) | |
609 | { | |
610 | return register_tcf_proto_ops(&cls_route4_ops); | |
611 | } | |
612 | ||
613 | static void __exit exit_route4(void) | |
614 | { | |
615 | unregister_tcf_proto_ops(&cls_route4_ops); | |
616 | } | |
617 | ||
618 | module_init(init_route4) | |
619 | module_exit(exit_route4) | |
620 | MODULE_LICENSE("GPL"); |