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> | |
5a0e3ad6 | 13 | #include <linux/slab.h> |
1da177e4 LT |
14 | #include <linux/types.h> |
15 | #include <linux/kernel.h> | |
1da177e4 | 16 | #include <linux/string.h> |
1da177e4 | 17 | #include <linux/errno.h> |
1da177e4 | 18 | #include <linux/skbuff.h> |
0ba48053 PM |
19 | #include <net/dst.h> |
20 | #include <net/route.h> | |
21 | #include <net/netlink.h> | |
1da177e4 LT |
22 | #include <net/act_api.h> |
23 | #include <net/pkt_cls.h> | |
24 | ||
25 | /* | |
cc7ec456 ED |
26 | * 1. For now we assume that route tags < 256. |
27 | * It allows to use direct table lookups, instead of hash tables. | |
28 | * 2. For now we assume that "from TAG" and "fromdev DEV" statements | |
29 | * are mutually exclusive. | |
30 | * 3. "to TAG from ANY" has higher priority, than "to ANY from XXX" | |
1da177e4 LT |
31 | */ |
32 | ||
cc7ec456 | 33 | struct route4_fastmap { |
1da177e4 LT |
34 | struct route4_filter *filter; |
35 | u32 id; | |
36 | int iif; | |
37 | }; | |
38 | ||
cc7ec456 | 39 | struct route4_head { |
1da177e4 | 40 | struct route4_fastmap fastmap[16]; |
cc7ec456 | 41 | struct route4_bucket *table[256 + 1]; |
1da177e4 LT |
42 | }; |
43 | ||
cc7ec456 | 44 | struct route4_bucket { |
1da177e4 | 45 | /* 16 FROM buckets + 16 IIF buckets + 1 wildcard bucket */ |
cc7ec456 | 46 | struct route4_filter *ht[16 + 16 + 1]; |
1da177e4 LT |
47 | }; |
48 | ||
cc7ec456 | 49 | struct route4_filter { |
1da177e4 LT |
50 | struct route4_filter *next; |
51 | u32 id; | |
52 | int iif; | |
53 | ||
54 | struct tcf_result res; | |
55 | struct tcf_exts exts; | |
56 | u32 handle; | |
57 | struct route4_bucket *bkt; | |
58 | }; | |
59 | ||
cc7ec456 | 60 | #define ROUTE4_FAILURE ((struct route4_filter *)(-1L)) |
1da177e4 | 61 | |
5239008b | 62 | static const struct tcf_ext_map route_ext_map = { |
1da177e4 LT |
63 | .police = TCA_ROUTE4_POLICE, |
64 | .action = TCA_ROUTE4_ACT | |
65 | }; | |
66 | ||
cc7ec456 | 67 | static inline int route4_fastmap_hash(u32 id, int iif) |
1da177e4 | 68 | { |
cc7ec456 | 69 | return id & 0xF; |
1da177e4 LT |
70 | } |
71 | ||
cc7ec456 ED |
72 | static void |
73 | route4_reset_fastmap(struct Qdisc *q, struct route4_head *head, u32 id) | |
1da177e4 | 74 | { |
102396ae | 75 | spinlock_t *root_lock = qdisc_root_sleeping_lock(q); |
15b458fa DM |
76 | |
77 | spin_lock_bh(root_lock); | |
1da177e4 | 78 | memset(head->fastmap, 0, sizeof(head->fastmap)); |
15b458fa | 79 | spin_unlock_bh(root_lock); |
1da177e4 LT |
80 | } |
81 | ||
cc7ec456 | 82 | static void |
1da177e4 LT |
83 | route4_set_fastmap(struct route4_head *head, u32 id, int iif, |
84 | struct route4_filter *f) | |
85 | { | |
86 | int h = route4_fastmap_hash(id, iif); | |
cc7ec456 | 87 | |
1da177e4 LT |
88 | head->fastmap[h].id = id; |
89 | head->fastmap[h].iif = iif; | |
90 | head->fastmap[h].filter = f; | |
91 | } | |
92 | ||
cc7ec456 | 93 | static inline int route4_hash_to(u32 id) |
1da177e4 | 94 | { |
cc7ec456 | 95 | return id & 0xFF; |
1da177e4 LT |
96 | } |
97 | ||
cc7ec456 | 98 | static inline int route4_hash_from(u32 id) |
1da177e4 | 99 | { |
cc7ec456 | 100 | return (id >> 16) & 0xF; |
1da177e4 LT |
101 | } |
102 | ||
cc7ec456 | 103 | static inline int route4_hash_iif(int iif) |
1da177e4 | 104 | { |
cc7ec456 | 105 | return 16 + ((iif >> 16) & 0xF); |
1da177e4 LT |
106 | } |
107 | ||
cc7ec456 | 108 | static inline int route4_hash_wild(void) |
1da177e4 LT |
109 | { |
110 | return 32; | |
111 | } | |
112 | ||
113 | #define ROUTE4_APPLY_RESULT() \ | |
114 | { \ | |
115 | *res = f->res; \ | |
116 | if (tcf_exts_is_available(&f->exts)) { \ | |
117 | int r = tcf_exts_exec(skb, &f->exts, res); \ | |
118 | if (r < 0) { \ | |
119 | dont_cache = 1; \ | |
120 | continue; \ | |
121 | } \ | |
122 | return r; \ | |
123 | } else if (!dont_cache) \ | |
124 | route4_set_fastmap(head, id, iif, f); \ | |
125 | return 0; \ | |
126 | } | |
127 | ||
dc7f9f6e | 128 | static int route4_classify(struct sk_buff *skb, const struct tcf_proto *tp, |
1da177e4 LT |
129 | struct tcf_result *res) |
130 | { | |
cc7ec456 | 131 | struct route4_head *head = (struct route4_head *)tp->root; |
1da177e4 LT |
132 | struct dst_entry *dst; |
133 | struct route4_bucket *b; | |
134 | struct route4_filter *f; | |
135 | u32 id, h; | |
136 | int iif, dont_cache = 0; | |
137 | ||
cc7ec456 ED |
138 | dst = skb_dst(skb); |
139 | if (!dst) | |
1da177e4 LT |
140 | goto failure; |
141 | ||
142 | id = dst->tclassid; | |
143 | if (head == NULL) | |
144 | goto old_method; | |
145 | ||
92101b3b | 146 | iif = inet_iif(skb); |
1da177e4 LT |
147 | |
148 | h = route4_fastmap_hash(id, iif); | |
149 | if (id == head->fastmap[h].id && | |
150 | iif == head->fastmap[h].iif && | |
151 | (f = head->fastmap[h].filter) != NULL) { | |
152 | if (f == ROUTE4_FAILURE) | |
153 | goto failure; | |
154 | ||
155 | *res = f->res; | |
156 | return 0; | |
157 | } | |
158 | ||
159 | h = route4_hash_to(id); | |
160 | ||
161 | restart: | |
cc7ec456 ED |
162 | b = head->table[h]; |
163 | if (b) { | |
1da177e4 LT |
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 | { | |
cc7ec456 ED |
199 | u32 h = id & 0xFF; |
200 | ||
201 | if (id & 0x8000) | |
1da177e4 LT |
202 | h += 256; |
203 | return h; | |
204 | } | |
205 | ||
206 | static inline u32 from_hash(u32 id) | |
207 | { | |
208 | id &= 0xFFFF; | |
209 | if (id == 0xFFFF) | |
210 | return 32; | |
211 | if (!(id & 0x8000)) { | |
212 | if (id > 255) | |
213 | return 256; | |
cc7ec456 | 214 | return id & 0xF; |
1da177e4 | 215 | } |
cc7ec456 | 216 | return 16 + (id & 0xF); |
1da177e4 LT |
217 | } |
218 | ||
219 | static unsigned long route4_get(struct tcf_proto *tp, u32 handle) | |
220 | { | |
cc7ec456 | 221 | struct route4_head *head = (struct route4_head *)tp->root; |
1da177e4 LT |
222 | struct route4_bucket *b; |
223 | struct route4_filter *f; | |
cc7ec456 | 224 | unsigned int h1, h2; |
1da177e4 LT |
225 | |
226 | if (!head) | |
227 | return 0; | |
228 | ||
229 | h1 = to_hash(handle); | |
230 | if (h1 > 256) | |
231 | return 0; | |
232 | ||
cc7ec456 | 233 | h2 = from_hash(handle >> 16); |
1da177e4 LT |
234 | if (h2 > 32) |
235 | return 0; | |
236 | ||
cc7ec456 ED |
237 | b = head->table[h1]; |
238 | if (b) { | |
1da177e4 LT |
239 | for (f = b->ht[h2]; f; f = f->next) |
240 | if (f->handle == handle) | |
241 | return (unsigned long)f; | |
242 | } | |
243 | return 0; | |
244 | } | |
245 | ||
246 | static void route4_put(struct tcf_proto *tp, unsigned long f) | |
247 | { | |
248 | } | |
249 | ||
250 | static int route4_init(struct tcf_proto *tp) | |
251 | { | |
252 | return 0; | |
253 | } | |
254 | ||
cc7ec456 | 255 | static void |
1da177e4 LT |
256 | route4_delete_filter(struct tcf_proto *tp, struct route4_filter *f) |
257 | { | |
258 | tcf_unbind_filter(tp, &f->res); | |
259 | tcf_exts_destroy(tp, &f->exts); | |
260 | kfree(f); | |
261 | } | |
262 | ||
263 | static void route4_destroy(struct tcf_proto *tp) | |
264 | { | |
47a1a1d4 | 265 | struct route4_head *head = tp->root; |
1da177e4 LT |
266 | int h1, h2; |
267 | ||
268 | if (head == NULL) | |
269 | return; | |
270 | ||
cc7ec456 | 271 | for (h1 = 0; h1 <= 256; h1++) { |
1da177e4 LT |
272 | struct route4_bucket *b; |
273 | ||
cc7ec456 ED |
274 | b = head->table[h1]; |
275 | if (b) { | |
276 | for (h2 = 0; h2 <= 32; h2++) { | |
1da177e4 LT |
277 | struct route4_filter *f; |
278 | ||
279 | while ((f = b->ht[h2]) != NULL) { | |
280 | b->ht[h2] = f->next; | |
281 | route4_delete_filter(tp, f); | |
282 | } | |
283 | } | |
284 | kfree(b); | |
285 | } | |
286 | } | |
287 | kfree(head); | |
288 | } | |
289 | ||
290 | static int route4_delete(struct tcf_proto *tp, unsigned long arg) | |
291 | { | |
cc7ec456 ED |
292 | struct route4_head *head = (struct route4_head *)tp->root; |
293 | struct route4_filter **fp, *f = (struct route4_filter *)arg; | |
294 | unsigned int h = 0; | |
1da177e4 LT |
295 | struct route4_bucket *b; |
296 | int i; | |
297 | ||
298 | if (!head || !f) | |
299 | return -EINVAL; | |
300 | ||
301 | h = f->handle; | |
302 | b = f->bkt; | |
303 | ||
cc7ec456 | 304 | for (fp = &b->ht[from_hash(h >> 16)]; *fp; fp = &(*fp)->next) { |
1da177e4 LT |
305 | if (*fp == f) { |
306 | tcf_tree_lock(tp); | |
307 | *fp = f->next; | |
308 | tcf_tree_unlock(tp); | |
309 | ||
15b458fa | 310 | route4_reset_fastmap(tp->q, head, f->id); |
1da177e4 LT |
311 | route4_delete_filter(tp, f); |
312 | ||
313 | /* Strip tree */ | |
314 | ||
cc7ec456 | 315 | for (i = 0; i <= 32; i++) |
1da177e4 LT |
316 | if (b->ht[i]) |
317 | return 0; | |
318 | ||
319 | /* OK, session has no flows */ | |
320 | tcf_tree_lock(tp); | |
321 | head->table[to_hash(h)] = NULL; | |
322 | tcf_tree_unlock(tp); | |
323 | ||
324 | kfree(b); | |
325 | return 0; | |
326 | } | |
327 | } | |
328 | return 0; | |
329 | } | |
330 | ||
6fa8c014 PM |
331 | static const struct nla_policy route4_policy[TCA_ROUTE4_MAX + 1] = { |
332 | [TCA_ROUTE4_CLASSID] = { .type = NLA_U32 }, | |
333 | [TCA_ROUTE4_TO] = { .type = NLA_U32 }, | |
334 | [TCA_ROUTE4_FROM] = { .type = NLA_U32 }, | |
335 | [TCA_ROUTE4_IIF] = { .type = NLA_U32 }, | |
336 | }; | |
337 | ||
1da177e4 LT |
338 | static int route4_set_parms(struct tcf_proto *tp, unsigned long base, |
339 | struct route4_filter *f, u32 handle, struct route4_head *head, | |
add93b61 | 340 | struct nlattr **tb, struct nlattr *est, int new) |
1da177e4 LT |
341 | { |
342 | int err; | |
343 | u32 id = 0, to = 0, nhandle = 0x8000; | |
344 | struct route4_filter *fp; | |
345 | unsigned int h1; | |
346 | struct route4_bucket *b; | |
347 | struct tcf_exts e; | |
348 | ||
349 | err = tcf_exts_validate(tp, tb, est, &e, &route_ext_map); | |
350 | if (err < 0) | |
351 | return err; | |
352 | ||
353 | err = -EINVAL; | |
add93b61 | 354 | if (tb[TCA_ROUTE4_TO]) { |
1da177e4 LT |
355 | if (new && handle & 0x8000) |
356 | goto errout; | |
1587bac4 | 357 | to = nla_get_u32(tb[TCA_ROUTE4_TO]); |
1da177e4 LT |
358 | if (to > 0xFF) |
359 | goto errout; | |
360 | nhandle = to; | |
361 | } | |
362 | ||
add93b61 PM |
363 | if (tb[TCA_ROUTE4_FROM]) { |
364 | if (tb[TCA_ROUTE4_IIF]) | |
1da177e4 | 365 | goto errout; |
1587bac4 | 366 | id = nla_get_u32(tb[TCA_ROUTE4_FROM]); |
1da177e4 LT |
367 | if (id > 0xFF) |
368 | goto errout; | |
369 | nhandle |= id << 16; | |
add93b61 | 370 | } else if (tb[TCA_ROUTE4_IIF]) { |
1587bac4 | 371 | id = nla_get_u32(tb[TCA_ROUTE4_IIF]); |
1da177e4 LT |
372 | if (id > 0x7FFF) |
373 | goto errout; | |
374 | nhandle |= (id | 0x8000) << 16; | |
375 | } else | |
376 | nhandle |= 0xFFFF << 16; | |
377 | ||
378 | if (handle && new) { | |
379 | nhandle |= handle & 0x7F00; | |
380 | if (nhandle != handle) | |
381 | goto errout; | |
382 | } | |
383 | ||
384 | h1 = to_hash(nhandle); | |
cc7ec456 ED |
385 | b = head->table[h1]; |
386 | if (!b) { | |
1da177e4 | 387 | err = -ENOBUFS; |
0da974f4 | 388 | b = kzalloc(sizeof(struct route4_bucket), GFP_KERNEL); |
1da177e4 LT |
389 | if (b == NULL) |
390 | goto errout; | |
1da177e4 LT |
391 | |
392 | tcf_tree_lock(tp); | |
393 | head->table[h1] = b; | |
394 | tcf_tree_unlock(tp); | |
395 | } else { | |
396 | unsigned int h2 = from_hash(nhandle >> 16); | |
cc7ec456 | 397 | |
1da177e4 LT |
398 | err = -EEXIST; |
399 | for (fp = b->ht[h2]; fp; fp = fp->next) | |
400 | if (fp->handle == f->handle) | |
401 | goto errout; | |
402 | } | |
403 | ||
404 | tcf_tree_lock(tp); | |
add93b61 | 405 | if (tb[TCA_ROUTE4_TO]) |
1da177e4 LT |
406 | f->id = to; |
407 | ||
add93b61 | 408 | if (tb[TCA_ROUTE4_FROM]) |
1da177e4 | 409 | f->id = to | id<<16; |
add93b61 | 410 | else if (tb[TCA_ROUTE4_IIF]) |
1da177e4 LT |
411 | f->iif = id; |
412 | ||
413 | f->handle = nhandle; | |
414 | f->bkt = b; | |
415 | tcf_tree_unlock(tp); | |
416 | ||
add93b61 | 417 | if (tb[TCA_ROUTE4_CLASSID]) { |
1587bac4 | 418 | f->res.classid = nla_get_u32(tb[TCA_ROUTE4_CLASSID]); |
1da177e4 LT |
419 | tcf_bind_filter(tp, &f->res, base); |
420 | } | |
421 | ||
422 | tcf_exts_change(tp, &f->exts, &e); | |
423 | ||
424 | return 0; | |
425 | errout: | |
426 | tcf_exts_destroy(tp, &e); | |
427 | return err; | |
428 | } | |
429 | ||
af4c6641 EB |
430 | static int route4_change(struct sk_buff *in_skb, |
431 | struct tcf_proto *tp, unsigned long base, | |
1da177e4 | 432 | u32 handle, |
add93b61 | 433 | struct nlattr **tca, |
1da177e4 LT |
434 | unsigned long *arg) |
435 | { | |
436 | struct route4_head *head = tp->root; | |
437 | struct route4_filter *f, *f1, **fp; | |
438 | struct route4_bucket *b; | |
add93b61 PM |
439 | struct nlattr *opt = tca[TCA_OPTIONS]; |
440 | struct nlattr *tb[TCA_ROUTE4_MAX + 1]; | |
1da177e4 LT |
441 | unsigned int h, th; |
442 | u32 old_handle = 0; | |
443 | int err; | |
444 | ||
445 | if (opt == NULL) | |
446 | return handle ? -EINVAL : 0; | |
447 | ||
6fa8c014 | 448 | err = nla_parse_nested(tb, TCA_ROUTE4_MAX, opt, route4_policy); |
cee63723 PM |
449 | if (err < 0) |
450 | return err; | |
1da177e4 | 451 | |
cc7ec456 ED |
452 | f = (struct route4_filter *)*arg; |
453 | if (f) { | |
1da177e4 LT |
454 | if (f->handle != handle && handle) |
455 | return -EINVAL; | |
456 | ||
457 | if (f->bkt) | |
458 | old_handle = f->handle; | |
459 | ||
460 | err = route4_set_parms(tp, base, f, handle, head, tb, | |
add93b61 | 461 | tca[TCA_RATE], 0); |
1da177e4 LT |
462 | if (err < 0) |
463 | return err; | |
464 | ||
465 | goto reinsert; | |
466 | } | |
467 | ||
468 | err = -ENOBUFS; | |
469 | if (head == NULL) { | |
0da974f4 | 470 | head = kzalloc(sizeof(struct route4_head), GFP_KERNEL); |
1da177e4 LT |
471 | if (head == NULL) |
472 | goto errout; | |
1da177e4 LT |
473 | |
474 | tcf_tree_lock(tp); | |
475 | tp->root = head; | |
476 | tcf_tree_unlock(tp); | |
477 | } | |
478 | ||
0da974f4 | 479 | f = kzalloc(sizeof(struct route4_filter), GFP_KERNEL); |
1da177e4 LT |
480 | if (f == NULL) |
481 | goto errout; | |
1da177e4 LT |
482 | |
483 | err = route4_set_parms(tp, base, f, handle, head, tb, | |
add93b61 | 484 | tca[TCA_RATE], 1); |
1da177e4 LT |
485 | if (err < 0) |
486 | goto errout; | |
487 | ||
488 | reinsert: | |
489 | h = from_hash(f->handle >> 16); | |
cc7ec456 | 490 | for (fp = &f->bkt->ht[h]; (f1 = *fp) != NULL; fp = &f1->next) |
1da177e4 LT |
491 | if (f->handle < f1->handle) |
492 | break; | |
493 | ||
494 | f->next = f1; | |
495 | tcf_tree_lock(tp); | |
496 | *fp = f; | |
497 | ||
498 | if (old_handle && f->handle != old_handle) { | |
499 | th = to_hash(old_handle); | |
500 | h = from_hash(old_handle >> 16); | |
cc7ec456 ED |
501 | b = head->table[th]; |
502 | if (b) { | |
1da177e4 LT |
503 | for (fp = &b->ht[h]; *fp; fp = &(*fp)->next) { |
504 | if (*fp == f) { | |
505 | *fp = f->next; | |
506 | break; | |
507 | } | |
508 | } | |
509 | } | |
510 | } | |
511 | tcf_tree_unlock(tp); | |
512 | ||
15b458fa | 513 | route4_reset_fastmap(tp->q, head, f->id); |
1da177e4 LT |
514 | *arg = (unsigned long)f; |
515 | return 0; | |
516 | ||
517 | errout: | |
a51482bd | 518 | kfree(f); |
1da177e4 LT |
519 | return err; |
520 | } | |
521 | ||
522 | static void route4_walk(struct tcf_proto *tp, struct tcf_walker *arg) | |
523 | { | |
524 | struct route4_head *head = tp->root; | |
cc7ec456 | 525 | unsigned int h, h1; |
1da177e4 LT |
526 | |
527 | if (head == NULL) | |
528 | arg->stop = 1; | |
529 | ||
530 | if (arg->stop) | |
531 | return; | |
532 | ||
533 | for (h = 0; h <= 256; h++) { | |
534 | struct route4_bucket *b = head->table[h]; | |
535 | ||
536 | if (b) { | |
537 | for (h1 = 0; h1 <= 32; h1++) { | |
538 | struct route4_filter *f; | |
539 | ||
540 | for (f = b->ht[h1]; f; f = f->next) { | |
541 | if (arg->count < arg->skip) { | |
542 | arg->count++; | |
543 | continue; | |
544 | } | |
545 | if (arg->fn(tp, (unsigned long)f, arg) < 0) { | |
546 | arg->stop = 1; | |
547 | return; | |
548 | } | |
549 | arg->count++; | |
550 | } | |
551 | } | |
552 | } | |
553 | } | |
554 | } | |
555 | ||
556 | static int route4_dump(struct tcf_proto *tp, unsigned long fh, | |
557 | struct sk_buff *skb, struct tcmsg *t) | |
558 | { | |
cc7ec456 | 559 | struct route4_filter *f = (struct route4_filter *)fh; |
27a884dc | 560 | unsigned char *b = skb_tail_pointer(skb); |
4b3550ef | 561 | struct nlattr *nest; |
1da177e4 LT |
562 | u32 id; |
563 | ||
564 | if (f == NULL) | |
565 | return skb->len; | |
566 | ||
567 | t->tcm_handle = f->handle; | |
568 | ||
4b3550ef PM |
569 | nest = nla_nest_start(skb, TCA_OPTIONS); |
570 | if (nest == NULL) | |
571 | goto nla_put_failure; | |
1da177e4 | 572 | |
cc7ec456 ED |
573 | if (!(f->handle & 0x8000)) { |
574 | id = f->id & 0xFF; | |
1b34ec43 DM |
575 | if (nla_put_u32(skb, TCA_ROUTE4_TO, id)) |
576 | goto nla_put_failure; | |
1da177e4 | 577 | } |
cc7ec456 | 578 | if (f->handle & 0x80000000) { |
1b34ec43 DM |
579 | if ((f->handle >> 16) != 0xFFFF && |
580 | nla_put_u32(skb, TCA_ROUTE4_IIF, f->iif)) | |
581 | goto nla_put_failure; | |
1da177e4 | 582 | } else { |
cc7ec456 | 583 | id = f->id >> 16; |
1b34ec43 DM |
584 | if (nla_put_u32(skb, TCA_ROUTE4_FROM, id)) |
585 | goto nla_put_failure; | |
1da177e4 | 586 | } |
1b34ec43 DM |
587 | if (f->res.classid && |
588 | nla_put_u32(skb, TCA_ROUTE4_CLASSID, f->res.classid)) | |
589 | goto nla_put_failure; | |
1da177e4 LT |
590 | |
591 | if (tcf_exts_dump(skb, &f->exts, &route_ext_map) < 0) | |
add93b61 | 592 | goto nla_put_failure; |
1da177e4 | 593 | |
4b3550ef | 594 | nla_nest_end(skb, nest); |
1da177e4 LT |
595 | |
596 | if (tcf_exts_dump_stats(skb, &f->exts, &route_ext_map) < 0) | |
add93b61 | 597 | goto nla_put_failure; |
1da177e4 LT |
598 | |
599 | return skb->len; | |
600 | ||
add93b61 | 601 | nla_put_failure: |
dc5fc579 | 602 | nlmsg_trim(skb, b); |
1da177e4 LT |
603 | return -1; |
604 | } | |
605 | ||
2eb9d75c | 606 | static struct tcf_proto_ops cls_route4_ops __read_mostly = { |
1da177e4 LT |
607 | .kind = "route", |
608 | .classify = route4_classify, | |
609 | .init = route4_init, | |
610 | .destroy = route4_destroy, | |
611 | .get = route4_get, | |
612 | .put = route4_put, | |
613 | .change = route4_change, | |
614 | .delete = route4_delete, | |
615 | .walk = route4_walk, | |
616 | .dump = route4_dump, | |
617 | .owner = THIS_MODULE, | |
618 | }; | |
619 | ||
620 | static int __init init_route4(void) | |
621 | { | |
622 | return register_tcf_proto_ops(&cls_route4_ops); | |
623 | } | |
624 | ||
625 | static void __exit exit_route4(void) | |
626 | { | |
627 | unregister_tcf_proto_ops(&cls_route4_ops); | |
628 | } | |
629 | ||
630 | module_init(init_route4) | |
631 | module_exit(exit_route4) | |
632 | MODULE_LICENSE("GPL"); |