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 | |
cc7ec456 | 62 | static inline int route4_fastmap_hash(u32 id, int iif) |
1da177e4 | 63 | { |
cc7ec456 | 64 | return id & 0xF; |
1da177e4 LT |
65 | } |
66 | ||
cc7ec456 ED |
67 | static void |
68 | route4_reset_fastmap(struct Qdisc *q, struct route4_head *head, u32 id) | |
1da177e4 | 69 | { |
102396ae | 70 | spinlock_t *root_lock = qdisc_root_sleeping_lock(q); |
15b458fa DM |
71 | |
72 | spin_lock_bh(root_lock); | |
1da177e4 | 73 | memset(head->fastmap, 0, sizeof(head->fastmap)); |
15b458fa | 74 | spin_unlock_bh(root_lock); |
1da177e4 LT |
75 | } |
76 | ||
cc7ec456 | 77 | static void |
1da177e4 LT |
78 | route4_set_fastmap(struct route4_head *head, u32 id, int iif, |
79 | struct route4_filter *f) | |
80 | { | |
81 | int h = route4_fastmap_hash(id, iif); | |
cc7ec456 | 82 | |
1da177e4 LT |
83 | head->fastmap[h].id = id; |
84 | head->fastmap[h].iif = iif; | |
85 | head->fastmap[h].filter = f; | |
86 | } | |
87 | ||
cc7ec456 | 88 | static inline int route4_hash_to(u32 id) |
1da177e4 | 89 | { |
cc7ec456 | 90 | return id & 0xFF; |
1da177e4 LT |
91 | } |
92 | ||
cc7ec456 | 93 | static inline int route4_hash_from(u32 id) |
1da177e4 | 94 | { |
cc7ec456 | 95 | return (id >> 16) & 0xF; |
1da177e4 LT |
96 | } |
97 | ||
cc7ec456 | 98 | static inline int route4_hash_iif(int iif) |
1da177e4 | 99 | { |
cc7ec456 | 100 | return 16 + ((iif >> 16) & 0xF); |
1da177e4 LT |
101 | } |
102 | ||
cc7ec456 | 103 | static inline int route4_hash_wild(void) |
1da177e4 LT |
104 | { |
105 | return 32; | |
106 | } | |
107 | ||
108 | #define ROUTE4_APPLY_RESULT() \ | |
109 | { \ | |
110 | *res = f->res; \ | |
111 | if (tcf_exts_is_available(&f->exts)) { \ | |
112 | int r = tcf_exts_exec(skb, &f->exts, res); \ | |
113 | if (r < 0) { \ | |
114 | dont_cache = 1; \ | |
115 | continue; \ | |
116 | } \ | |
117 | return r; \ | |
118 | } else if (!dont_cache) \ | |
119 | route4_set_fastmap(head, id, iif, f); \ | |
120 | return 0; \ | |
121 | } | |
122 | ||
dc7f9f6e | 123 | static int route4_classify(struct sk_buff *skb, const struct tcf_proto *tp, |
1da177e4 LT |
124 | struct tcf_result *res) |
125 | { | |
a8701a6c | 126 | struct route4_head *head = tp->root; |
1da177e4 LT |
127 | struct dst_entry *dst; |
128 | struct route4_bucket *b; | |
129 | struct route4_filter *f; | |
130 | u32 id, h; | |
131 | int iif, dont_cache = 0; | |
132 | ||
cc7ec456 ED |
133 | dst = skb_dst(skb); |
134 | if (!dst) | |
1da177e4 LT |
135 | goto failure; |
136 | ||
137 | id = dst->tclassid; | |
138 | if (head == NULL) | |
139 | goto old_method; | |
140 | ||
92101b3b | 141 | iif = inet_iif(skb); |
1da177e4 LT |
142 | |
143 | h = route4_fastmap_hash(id, iif); | |
144 | if (id == head->fastmap[h].id && | |
145 | iif == head->fastmap[h].iif && | |
146 | (f = head->fastmap[h].filter) != NULL) { | |
147 | if (f == ROUTE4_FAILURE) | |
148 | goto failure; | |
149 | ||
150 | *res = f->res; | |
151 | return 0; | |
152 | } | |
153 | ||
154 | h = route4_hash_to(id); | |
155 | ||
156 | restart: | |
cc7ec456 ED |
157 | b = head->table[h]; |
158 | if (b) { | |
1da177e4 LT |
159 | for (f = b->ht[route4_hash_from(id)]; f; f = f->next) |
160 | if (f->id == id) | |
161 | ROUTE4_APPLY_RESULT(); | |
162 | ||
163 | for (f = b->ht[route4_hash_iif(iif)]; f; f = f->next) | |
164 | if (f->iif == iif) | |
165 | ROUTE4_APPLY_RESULT(); | |
166 | ||
167 | for (f = b->ht[route4_hash_wild()]; f; f = f->next) | |
168 | ROUTE4_APPLY_RESULT(); | |
169 | ||
170 | } | |
171 | if (h < 256) { | |
172 | h = 256; | |
173 | id &= ~0xFFFF; | |
174 | goto restart; | |
175 | } | |
176 | ||
177 | if (!dont_cache) | |
178 | route4_set_fastmap(head, id, iif, ROUTE4_FAILURE); | |
179 | failure: | |
180 | return -1; | |
181 | ||
182 | old_method: | |
183 | if (id && (TC_H_MAJ(id) == 0 || | |
184 | !(TC_H_MAJ(id^tp->q->handle)))) { | |
185 | res->classid = id; | |
186 | res->class = 0; | |
187 | return 0; | |
188 | } | |
189 | return -1; | |
190 | } | |
191 | ||
192 | static inline u32 to_hash(u32 id) | |
193 | { | |
cc7ec456 ED |
194 | u32 h = id & 0xFF; |
195 | ||
196 | if (id & 0x8000) | |
1da177e4 LT |
197 | h += 256; |
198 | return h; | |
199 | } | |
200 | ||
201 | static inline u32 from_hash(u32 id) | |
202 | { | |
203 | id &= 0xFFFF; | |
204 | if (id == 0xFFFF) | |
205 | return 32; | |
206 | if (!(id & 0x8000)) { | |
207 | if (id > 255) | |
208 | return 256; | |
cc7ec456 | 209 | return id & 0xF; |
1da177e4 | 210 | } |
cc7ec456 | 211 | return 16 + (id & 0xF); |
1da177e4 LT |
212 | } |
213 | ||
214 | static unsigned long route4_get(struct tcf_proto *tp, u32 handle) | |
215 | { | |
a8701a6c | 216 | struct route4_head *head = tp->root; |
1da177e4 LT |
217 | struct route4_bucket *b; |
218 | struct route4_filter *f; | |
cc7ec456 | 219 | unsigned int h1, h2; |
1da177e4 LT |
220 | |
221 | if (!head) | |
222 | return 0; | |
223 | ||
224 | h1 = to_hash(handle); | |
225 | if (h1 > 256) | |
226 | return 0; | |
227 | ||
cc7ec456 | 228 | h2 = from_hash(handle >> 16); |
1da177e4 LT |
229 | if (h2 > 32) |
230 | return 0; | |
231 | ||
cc7ec456 ED |
232 | b = head->table[h1]; |
233 | if (b) { | |
1da177e4 LT |
234 | for (f = b->ht[h2]; f; f = f->next) |
235 | if (f->handle == handle) | |
236 | return (unsigned long)f; | |
237 | } | |
238 | return 0; | |
239 | } | |
240 | ||
241 | static void route4_put(struct tcf_proto *tp, unsigned long f) | |
242 | { | |
243 | } | |
244 | ||
245 | static int route4_init(struct tcf_proto *tp) | |
246 | { | |
247 | return 0; | |
248 | } | |
249 | ||
cc7ec456 | 250 | static void |
1da177e4 LT |
251 | route4_delete_filter(struct tcf_proto *tp, struct route4_filter *f) |
252 | { | |
253 | tcf_unbind_filter(tp, &f->res); | |
254 | tcf_exts_destroy(tp, &f->exts); | |
255 | kfree(f); | |
256 | } | |
257 | ||
258 | static void route4_destroy(struct tcf_proto *tp) | |
259 | { | |
47a1a1d4 | 260 | struct route4_head *head = tp->root; |
1da177e4 LT |
261 | int h1, h2; |
262 | ||
263 | if (head == NULL) | |
264 | return; | |
265 | ||
cc7ec456 | 266 | for (h1 = 0; h1 <= 256; h1++) { |
1da177e4 LT |
267 | struct route4_bucket *b; |
268 | ||
cc7ec456 ED |
269 | b = head->table[h1]; |
270 | if (b) { | |
271 | for (h2 = 0; h2 <= 32; h2++) { | |
1da177e4 LT |
272 | struct route4_filter *f; |
273 | ||
274 | while ((f = b->ht[h2]) != NULL) { | |
275 | b->ht[h2] = f->next; | |
276 | route4_delete_filter(tp, f); | |
277 | } | |
278 | } | |
279 | kfree(b); | |
280 | } | |
281 | } | |
282 | kfree(head); | |
283 | } | |
284 | ||
285 | static int route4_delete(struct tcf_proto *tp, unsigned long arg) | |
286 | { | |
a8701a6c | 287 | struct route4_head *head = tp->root; |
cc7ec456 ED |
288 | struct route4_filter **fp, *f = (struct route4_filter *)arg; |
289 | unsigned int h = 0; | |
1da177e4 LT |
290 | struct route4_bucket *b; |
291 | int i; | |
292 | ||
293 | if (!head || !f) | |
294 | return -EINVAL; | |
295 | ||
296 | h = f->handle; | |
297 | b = f->bkt; | |
298 | ||
cc7ec456 | 299 | for (fp = &b->ht[from_hash(h >> 16)]; *fp; fp = &(*fp)->next) { |
1da177e4 LT |
300 | if (*fp == f) { |
301 | tcf_tree_lock(tp); | |
302 | *fp = f->next; | |
303 | tcf_tree_unlock(tp); | |
304 | ||
15b458fa | 305 | route4_reset_fastmap(tp->q, head, f->id); |
1da177e4 LT |
306 | route4_delete_filter(tp, f); |
307 | ||
308 | /* Strip tree */ | |
309 | ||
cc7ec456 | 310 | for (i = 0; i <= 32; i++) |
1da177e4 LT |
311 | if (b->ht[i]) |
312 | return 0; | |
313 | ||
314 | /* OK, session has no flows */ | |
315 | tcf_tree_lock(tp); | |
316 | head->table[to_hash(h)] = NULL; | |
317 | tcf_tree_unlock(tp); | |
318 | ||
319 | kfree(b); | |
320 | return 0; | |
321 | } | |
322 | } | |
323 | return 0; | |
324 | } | |
325 | ||
6fa8c014 PM |
326 | static const struct nla_policy route4_policy[TCA_ROUTE4_MAX + 1] = { |
327 | [TCA_ROUTE4_CLASSID] = { .type = NLA_U32 }, | |
328 | [TCA_ROUTE4_TO] = { .type = NLA_U32 }, | |
329 | [TCA_ROUTE4_FROM] = { .type = NLA_U32 }, | |
330 | [TCA_ROUTE4_IIF] = { .type = NLA_U32 }, | |
331 | }; | |
332 | ||
c1b52739 BL |
333 | static int route4_set_parms(struct net *net, struct tcf_proto *tp, |
334 | unsigned long base, struct route4_filter *f, | |
335 | u32 handle, struct route4_head *head, | |
336 | struct nlattr **tb, struct nlattr *est, int new) | |
1da177e4 LT |
337 | { |
338 | int err; | |
339 | u32 id = 0, to = 0, nhandle = 0x8000; | |
340 | struct route4_filter *fp; | |
341 | unsigned int h1; | |
342 | struct route4_bucket *b; | |
343 | struct tcf_exts e; | |
344 | ||
5da57f42 WC |
345 | tcf_exts_init(&e, TCA_ROUTE4_ACT, TCA_ROUTE4_POLICE); |
346 | err = tcf_exts_validate(net, tp, tb, est, &e); | |
1da177e4 LT |
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); | |
cc7ec456 ED |
382 | b = head->table[h1]; |
383 | if (!b) { | |
1da177e4 | 384 | err = -ENOBUFS; |
0da974f4 | 385 | b = kzalloc(sizeof(struct route4_bucket), GFP_KERNEL); |
1da177e4 LT |
386 | if (b == NULL) |
387 | goto errout; | |
1da177e4 LT |
388 | |
389 | tcf_tree_lock(tp); | |
390 | head->table[h1] = b; | |
391 | tcf_tree_unlock(tp); | |
392 | } else { | |
393 | unsigned int h2 = from_hash(nhandle >> 16); | |
cc7ec456 | 394 | |
1da177e4 LT |
395 | err = -EEXIST; |
396 | for (fp = b->ht[h2]; fp; fp = fp->next) | |
397 | if (fp->handle == f->handle) | |
398 | goto errout; | |
399 | } | |
400 | ||
401 | tcf_tree_lock(tp); | |
add93b61 | 402 | if (tb[TCA_ROUTE4_TO]) |
1da177e4 LT |
403 | f->id = to; |
404 | ||
add93b61 | 405 | if (tb[TCA_ROUTE4_FROM]) |
1da177e4 | 406 | f->id = to | id<<16; |
add93b61 | 407 | else if (tb[TCA_ROUTE4_IIF]) |
1da177e4 LT |
408 | f->iif = id; |
409 | ||
410 | f->handle = nhandle; | |
411 | f->bkt = b; | |
412 | tcf_tree_unlock(tp); | |
413 | ||
add93b61 | 414 | if (tb[TCA_ROUTE4_CLASSID]) { |
1587bac4 | 415 | f->res.classid = nla_get_u32(tb[TCA_ROUTE4_CLASSID]); |
1da177e4 LT |
416 | tcf_bind_filter(tp, &f->res, base); |
417 | } | |
418 | ||
419 | tcf_exts_change(tp, &f->exts, &e); | |
420 | ||
421 | return 0; | |
422 | errout: | |
423 | tcf_exts_destroy(tp, &e); | |
424 | return err; | |
425 | } | |
426 | ||
c1b52739 | 427 | static int route4_change(struct net *net, struct sk_buff *in_skb, |
af4c6641 | 428 | struct tcf_proto *tp, unsigned long base, |
1da177e4 | 429 | u32 handle, |
add93b61 | 430 | struct nlattr **tca, |
1da177e4 LT |
431 | unsigned long *arg) |
432 | { | |
433 | struct route4_head *head = tp->root; | |
434 | struct route4_filter *f, *f1, **fp; | |
435 | struct route4_bucket *b; | |
add93b61 PM |
436 | struct nlattr *opt = tca[TCA_OPTIONS]; |
437 | struct nlattr *tb[TCA_ROUTE4_MAX + 1]; | |
1da177e4 LT |
438 | unsigned int h, th; |
439 | u32 old_handle = 0; | |
440 | int err; | |
441 | ||
442 | if (opt == NULL) | |
443 | return handle ? -EINVAL : 0; | |
444 | ||
6fa8c014 | 445 | err = nla_parse_nested(tb, TCA_ROUTE4_MAX, opt, route4_policy); |
cee63723 PM |
446 | if (err < 0) |
447 | return err; | |
1da177e4 | 448 | |
cc7ec456 ED |
449 | f = (struct route4_filter *)*arg; |
450 | if (f) { | |
1da177e4 LT |
451 | if (f->handle != handle && handle) |
452 | return -EINVAL; | |
453 | ||
454 | if (f->bkt) | |
455 | old_handle = f->handle; | |
456 | ||
c1b52739 | 457 | err = route4_set_parms(net, tp, base, f, handle, head, tb, |
add93b61 | 458 | tca[TCA_RATE], 0); |
1da177e4 LT |
459 | if (err < 0) |
460 | return err; | |
461 | ||
462 | goto reinsert; | |
463 | } | |
464 | ||
465 | err = -ENOBUFS; | |
466 | if (head == NULL) { | |
0da974f4 | 467 | head = kzalloc(sizeof(struct route4_head), GFP_KERNEL); |
1da177e4 LT |
468 | if (head == NULL) |
469 | goto errout; | |
1da177e4 LT |
470 | |
471 | tcf_tree_lock(tp); | |
472 | tp->root = head; | |
473 | tcf_tree_unlock(tp); | |
474 | } | |
475 | ||
0da974f4 | 476 | f = kzalloc(sizeof(struct route4_filter), GFP_KERNEL); |
1da177e4 LT |
477 | if (f == NULL) |
478 | goto errout; | |
1da177e4 | 479 | |
5da57f42 | 480 | tcf_exts_init(&f->exts, TCA_ROUTE4_ACT, TCA_ROUTE4_POLICE); |
c1b52739 | 481 | err = route4_set_parms(net, tp, base, f, handle, head, tb, |
add93b61 | 482 | tca[TCA_RATE], 1); |
1da177e4 LT |
483 | if (err < 0) |
484 | goto errout; | |
485 | ||
486 | reinsert: | |
487 | h = from_hash(f->handle >> 16); | |
cc7ec456 | 488 | for (fp = &f->bkt->ht[h]; (f1 = *fp) != NULL; fp = &f1->next) |
1da177e4 LT |
489 | if (f->handle < f1->handle) |
490 | break; | |
491 | ||
492 | f->next = f1; | |
493 | tcf_tree_lock(tp); | |
494 | *fp = f; | |
495 | ||
496 | if (old_handle && f->handle != old_handle) { | |
497 | th = to_hash(old_handle); | |
498 | h = from_hash(old_handle >> 16); | |
cc7ec456 ED |
499 | b = head->table[th]; |
500 | if (b) { | |
1da177e4 LT |
501 | for (fp = &b->ht[h]; *fp; fp = &(*fp)->next) { |
502 | if (*fp == f) { | |
503 | *fp = f->next; | |
504 | break; | |
505 | } | |
506 | } | |
507 | } | |
508 | } | |
509 | tcf_tree_unlock(tp); | |
510 | ||
15b458fa | 511 | route4_reset_fastmap(tp->q, head, f->id); |
1da177e4 LT |
512 | *arg = (unsigned long)f; |
513 | return 0; | |
514 | ||
515 | errout: | |
a51482bd | 516 | kfree(f); |
1da177e4 LT |
517 | return err; |
518 | } | |
519 | ||
520 | static void route4_walk(struct tcf_proto *tp, struct tcf_walker *arg) | |
521 | { | |
522 | struct route4_head *head = tp->root; | |
cc7ec456 | 523 | unsigned int h, h1; |
1da177e4 LT |
524 | |
525 | if (head == NULL) | |
526 | arg->stop = 1; | |
527 | ||
528 | if (arg->stop) | |
529 | return; | |
530 | ||
531 | for (h = 0; h <= 256; h++) { | |
532 | struct route4_bucket *b = head->table[h]; | |
533 | ||
534 | if (b) { | |
535 | for (h1 = 0; h1 <= 32; h1++) { | |
536 | struct route4_filter *f; | |
537 | ||
538 | for (f = b->ht[h1]; f; f = f->next) { | |
539 | if (arg->count < arg->skip) { | |
540 | arg->count++; | |
541 | continue; | |
542 | } | |
543 | if (arg->fn(tp, (unsigned long)f, arg) < 0) { | |
544 | arg->stop = 1; | |
545 | return; | |
546 | } | |
547 | arg->count++; | |
548 | } | |
549 | } | |
550 | } | |
551 | } | |
552 | } | |
553 | ||
832d1d5b | 554 | static int route4_dump(struct net *net, struct tcf_proto *tp, unsigned long fh, |
1da177e4 LT |
555 | struct sk_buff *skb, struct tcmsg *t) |
556 | { | |
cc7ec456 | 557 | struct route4_filter *f = (struct route4_filter *)fh; |
27a884dc | 558 | unsigned char *b = skb_tail_pointer(skb); |
4b3550ef | 559 | struct nlattr *nest; |
1da177e4 LT |
560 | u32 id; |
561 | ||
562 | if (f == NULL) | |
563 | return skb->len; | |
564 | ||
565 | t->tcm_handle = f->handle; | |
566 | ||
4b3550ef PM |
567 | nest = nla_nest_start(skb, TCA_OPTIONS); |
568 | if (nest == NULL) | |
569 | goto nla_put_failure; | |
1da177e4 | 570 | |
cc7ec456 ED |
571 | if (!(f->handle & 0x8000)) { |
572 | id = f->id & 0xFF; | |
1b34ec43 DM |
573 | if (nla_put_u32(skb, TCA_ROUTE4_TO, id)) |
574 | goto nla_put_failure; | |
1da177e4 | 575 | } |
cc7ec456 | 576 | if (f->handle & 0x80000000) { |
1b34ec43 DM |
577 | if ((f->handle >> 16) != 0xFFFF && |
578 | nla_put_u32(skb, TCA_ROUTE4_IIF, f->iif)) | |
579 | goto nla_put_failure; | |
1da177e4 | 580 | } else { |
cc7ec456 | 581 | id = f->id >> 16; |
1b34ec43 DM |
582 | if (nla_put_u32(skb, TCA_ROUTE4_FROM, id)) |
583 | goto nla_put_failure; | |
1da177e4 | 584 | } |
1b34ec43 DM |
585 | if (f->res.classid && |
586 | nla_put_u32(skb, TCA_ROUTE4_CLASSID, f->res.classid)) | |
587 | goto nla_put_failure; | |
1da177e4 | 588 | |
5da57f42 | 589 | if (tcf_exts_dump(skb, &f->exts) < 0) |
add93b61 | 590 | goto nla_put_failure; |
1da177e4 | 591 | |
4b3550ef | 592 | nla_nest_end(skb, nest); |
1da177e4 | 593 | |
5da57f42 | 594 | if (tcf_exts_dump_stats(skb, &f->exts) < 0) |
add93b61 | 595 | goto nla_put_failure; |
1da177e4 LT |
596 | |
597 | return skb->len; | |
598 | ||
add93b61 | 599 | nla_put_failure: |
dc5fc579 | 600 | nlmsg_trim(skb, b); |
1da177e4 LT |
601 | return -1; |
602 | } | |
603 | ||
2eb9d75c | 604 | static struct tcf_proto_ops cls_route4_ops __read_mostly = { |
1da177e4 LT |
605 | .kind = "route", |
606 | .classify = route4_classify, | |
607 | .init = route4_init, | |
608 | .destroy = route4_destroy, | |
609 | .get = route4_get, | |
610 | .put = route4_put, | |
611 | .change = route4_change, | |
612 | .delete = route4_delete, | |
613 | .walk = route4_walk, | |
614 | .dump = route4_dump, | |
615 | .owner = THIS_MODULE, | |
616 | }; | |
617 | ||
618 | static int __init init_route4(void) | |
619 | { | |
620 | return register_tcf_proto_ops(&cls_route4_ops); | |
621 | } | |
622 | ||
623 | static void __exit exit_route4(void) | |
624 | { | |
625 | unregister_tcf_proto_ops(&cls_route4_ops); | |
626 | } | |
627 | ||
628 | module_init(init_route4) | |
629 | module_exit(exit_route4) | |
630 | MODULE_LICENSE("GPL"); |