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Commit | Line | Data |
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b2441318 | 1 | /* SPDX-License-Identifier: GPL-2.0 */ |
1da177e4 LT |
2 | #ifndef __NET_PKT_CLS_H |
3 | #define __NET_PKT_CLS_H | |
4 | ||
5 | #include <linux/pkt_cls.h> | |
7aa0045d | 6 | #include <linux/workqueue.h> |
1da177e4 LT |
7 | #include <net/sch_generic.h> |
8 | #include <net/act_api.h> | |
9 | ||
10 | /* Basic packet classifier frontend definitions. */ | |
11 | ||
fd2c3ef7 | 12 | struct tcf_walker { |
1da177e4 LT |
13 | int stop; |
14 | int skip; | |
15 | int count; | |
8113c095 | 16 | int (*fn)(struct tcf_proto *, void *node, struct tcf_walker *); |
1da177e4 LT |
17 | }; |
18 | ||
5c15257f JP |
19 | int register_tcf_proto_ops(struct tcf_proto_ops *ops); |
20 | int unregister_tcf_proto_ops(struct tcf_proto_ops *ops); | |
1da177e4 | 21 | |
8c4083b3 JP |
22 | enum tcf_block_binder_type { |
23 | TCF_BLOCK_BINDER_TYPE_UNSPEC, | |
6e40cf2d JP |
24 | TCF_BLOCK_BINDER_TYPE_CLSACT_INGRESS, |
25 | TCF_BLOCK_BINDER_TYPE_CLSACT_EGRESS, | |
8c4083b3 JP |
26 | }; |
27 | ||
28 | struct tcf_block_ext_info { | |
29 | enum tcf_block_binder_type binder_type; | |
c7eb7d72 JP |
30 | tcf_chain_head_change_t *chain_head_change; |
31 | void *chain_head_change_priv; | |
8c4083b3 JP |
32 | }; |
33 | ||
acb67442 | 34 | struct tcf_block_cb; |
7afe8e4f | 35 | bool tcf_queue_work(struct rcu_work *rwork, work_func_t func); |
acb67442 | 36 | |
8ae70032 | 37 | #ifdef CONFIG_NET_CLS |
367a8ce8 WC |
38 | struct tcf_chain *tcf_chain_get(struct tcf_block *block, u32 chain_index, |
39 | bool create); | |
5bc17018 | 40 | void tcf_chain_put(struct tcf_chain *chain); |
6529eaba | 41 | int tcf_block_get(struct tcf_block **p_block, |
69d78ef2 | 42 | struct tcf_proto __rcu **p_filter_chain, struct Qdisc *q); |
c7eb7d72 | 43 | int tcf_block_get_ext(struct tcf_block **p_block, struct Qdisc *q, |
8c4083b3 | 44 | struct tcf_block_ext_info *ei); |
6529eaba | 45 | void tcf_block_put(struct tcf_block *block); |
c7eb7d72 | 46 | void tcf_block_put_ext(struct tcf_block *block, struct Qdisc *q, |
8c4083b3 | 47 | struct tcf_block_ext_info *ei); |
44186460 JP |
48 | |
49 | static inline struct Qdisc *tcf_block_q(struct tcf_block *block) | |
50 | { | |
51 | return block->q; | |
52 | } | |
53 | ||
54 | static inline struct net_device *tcf_block_dev(struct tcf_block *block) | |
55 | { | |
56 | return tcf_block_q(block)->dev_queue->dev; | |
57 | } | |
58 | ||
acb67442 JP |
59 | void *tcf_block_cb_priv(struct tcf_block_cb *block_cb); |
60 | struct tcf_block_cb *tcf_block_cb_lookup(struct tcf_block *block, | |
61 | tc_setup_cb_t *cb, void *cb_ident); | |
62 | void tcf_block_cb_incref(struct tcf_block_cb *block_cb); | |
63 | unsigned int tcf_block_cb_decref(struct tcf_block_cb *block_cb); | |
64 | struct tcf_block_cb *__tcf_block_cb_register(struct tcf_block *block, | |
65 | tc_setup_cb_t *cb, void *cb_ident, | |
66 | void *cb_priv); | |
67 | int tcf_block_cb_register(struct tcf_block *block, | |
68 | tc_setup_cb_t *cb, void *cb_ident, | |
69 | void *cb_priv); | |
70 | void __tcf_block_cb_unregister(struct tcf_block_cb *block_cb); | |
71 | void tcf_block_cb_unregister(struct tcf_block *block, | |
72 | tc_setup_cb_t *cb, void *cb_ident); | |
73 | ||
87d83093 JP |
74 | int tcf_classify(struct sk_buff *skb, const struct tcf_proto *tp, |
75 | struct tcf_result *res, bool compat_mode); | |
76 | ||
8ae70032 | 77 | #else |
6529eaba JP |
78 | static inline |
79 | int tcf_block_get(struct tcf_block **p_block, | |
69d78ef2 | 80 | struct tcf_proto __rcu **p_filter_chain, struct Qdisc *q) |
6529eaba JP |
81 | { |
82 | return 0; | |
83 | } | |
84 | ||
8c4083b3 | 85 | static inline |
c7eb7d72 | 86 | int tcf_block_get_ext(struct tcf_block **p_block, struct Qdisc *q, |
8c4083b3 JP |
87 | struct tcf_block_ext_info *ei) |
88 | { | |
89 | return 0; | |
90 | } | |
91 | ||
6529eaba | 92 | static inline void tcf_block_put(struct tcf_block *block) |
8ae70032 JP |
93 | { |
94 | } | |
87d83093 | 95 | |
8c4083b3 | 96 | static inline |
c7eb7d72 | 97 | void tcf_block_put_ext(struct tcf_block *block, struct Qdisc *q, |
8c4083b3 JP |
98 | struct tcf_block_ext_info *ei) |
99 | { | |
100 | } | |
101 | ||
44186460 JP |
102 | static inline struct Qdisc *tcf_block_q(struct tcf_block *block) |
103 | { | |
104 | return NULL; | |
105 | } | |
106 | ||
107 | static inline struct net_device *tcf_block_dev(struct tcf_block *block) | |
108 | { | |
109 | return NULL; | |
110 | } | |
111 | ||
acb67442 JP |
112 | static inline |
113 | int tc_setup_cb_block_register(struct tcf_block *block, tc_setup_cb_t *cb, | |
114 | void *cb_priv) | |
115 | { | |
116 | return 0; | |
117 | } | |
118 | ||
119 | static inline | |
120 | void tc_setup_cb_block_unregister(struct tcf_block *block, tc_setup_cb_t *cb, | |
121 | void *cb_priv) | |
122 | { | |
123 | } | |
124 | ||
125 | static inline | |
126 | void *tcf_block_cb_priv(struct tcf_block_cb *block_cb) | |
127 | { | |
128 | return NULL; | |
129 | } | |
130 | ||
131 | static inline | |
132 | struct tcf_block_cb *tcf_block_cb_lookup(struct tcf_block *block, | |
133 | tc_setup_cb_t *cb, void *cb_ident) | |
134 | { | |
135 | return NULL; | |
136 | } | |
137 | ||
138 | static inline | |
139 | void tcf_block_cb_incref(struct tcf_block_cb *block_cb) | |
140 | { | |
141 | } | |
142 | ||
143 | static inline | |
144 | unsigned int tcf_block_cb_decref(struct tcf_block_cb *block_cb) | |
145 | { | |
146 | return 0; | |
147 | } | |
148 | ||
149 | static inline | |
150 | struct tcf_block_cb *__tcf_block_cb_register(struct tcf_block *block, | |
151 | tc_setup_cb_t *cb, void *cb_ident, | |
152 | void *cb_priv) | |
153 | { | |
154 | return NULL; | |
155 | } | |
156 | ||
157 | static inline | |
158 | int tcf_block_cb_register(struct tcf_block *block, | |
159 | tc_setup_cb_t *cb, void *cb_ident, | |
160 | void *cb_priv) | |
161 | { | |
162 | return 0; | |
163 | } | |
164 | ||
165 | static inline | |
166 | void __tcf_block_cb_unregister(struct tcf_block_cb *block_cb) | |
167 | { | |
168 | } | |
169 | ||
170 | static inline | |
171 | void tcf_block_cb_unregister(struct tcf_block *block, | |
172 | tc_setup_cb_t *cb, void *cb_ident) | |
173 | { | |
174 | } | |
175 | ||
87d83093 JP |
176 | static inline int tcf_classify(struct sk_buff *skb, const struct tcf_proto *tp, |
177 | struct tcf_result *res, bool compat_mode) | |
178 | { | |
179 | return TC_ACT_UNSPEC; | |
180 | } | |
8ae70032 | 181 | #endif |
cf1facda | 182 | |
1da177e4 LT |
183 | static inline unsigned long |
184 | __cls_set_class(unsigned long *clp, unsigned long cl) | |
185 | { | |
a0efb80c | 186 | return xchg(clp, cl); |
1da177e4 LT |
187 | } |
188 | ||
e46e33f5 CW |
189 | static inline void |
190 | __tcf_bind_filter(struct Qdisc *q, struct tcf_result *r, unsigned long base) | |
1da177e4 | 191 | { |
e46e33f5 | 192 | unsigned long cl; |
34e3759c | 193 | |
e46e33f5 CW |
194 | cl = q->ops->cl_ops->bind_tcf(q, base, r->classid); |
195 | cl = __cls_set_class(&r->class, cl); | |
196 | if (cl) | |
197 | q->ops->cl_ops->unbind_tcf(q, cl); | |
1da177e4 LT |
198 | } |
199 | ||
200 | static inline void | |
201 | tcf_bind_filter(struct tcf_proto *tp, struct tcf_result *r, unsigned long base) | |
202 | { | |
34e3759c | 203 | struct Qdisc *q = tp->chain->block->q; |
1da177e4 | 204 | |
34e3759c JP |
205 | /* Check q as it is not set for shared blocks. In that case, |
206 | * setting class is not supported. | |
207 | */ | |
208 | if (!q) | |
209 | return; | |
e46e33f5 CW |
210 | sch_tree_lock(q); |
211 | __tcf_bind_filter(q, r, base); | |
212 | sch_tree_unlock(q); | |
213 | } | |
214 | ||
215 | static inline void | |
216 | __tcf_unbind_filter(struct Qdisc *q, struct tcf_result *r) | |
217 | { | |
218 | unsigned long cl; | |
219 | ||
220 | if ((cl = __cls_set_class(&r->class, 0)) != 0) | |
34e3759c | 221 | q->ops->cl_ops->unbind_tcf(q, cl); |
1da177e4 LT |
222 | } |
223 | ||
224 | static inline void | |
225 | tcf_unbind_filter(struct tcf_proto *tp, struct tcf_result *r) | |
226 | { | |
34e3759c | 227 | struct Qdisc *q = tp->chain->block->q; |
1da177e4 | 228 | |
34e3759c JP |
229 | if (!q) |
230 | return; | |
e46e33f5 | 231 | __tcf_unbind_filter(q, r); |
1da177e4 LT |
232 | } |
233 | ||
fd2c3ef7 | 234 | struct tcf_exts { |
1da177e4 | 235 | #ifdef CONFIG_NET_CLS_ACT |
33be6271 | 236 | __u32 type; /* for backward compat(TCA_OLD_COMPAT) */ |
22dc13c8 WC |
237 | int nr_actions; |
238 | struct tc_action **actions; | |
e4b95c41 | 239 | struct net *net; |
1da177e4 | 240 | #endif |
5da57f42 WC |
241 | /* Map to export classifier specific extension TLV types to the |
242 | * generic extensions API. Unsupported extensions must be set to 0. | |
243 | */ | |
1da177e4 LT |
244 | int action; |
245 | int police; | |
246 | }; | |
247 | ||
fb6ad63b CW |
248 | static inline int tcf_exts_init(struct tcf_exts *exts, struct net *net, |
249 | int action, int police) | |
33be6271 WC |
250 | { |
251 | #ifdef CONFIG_NET_CLS_ACT | |
5da57f42 | 252 | exts->type = 0; |
22dc13c8 | 253 | exts->nr_actions = 0; |
fb6ad63b | 254 | exts->net = net; |
22dc13c8 WC |
255 | exts->actions = kcalloc(TCA_ACT_MAX_PRIO, sizeof(struct tc_action *), |
256 | GFP_KERNEL); | |
b9a24bb7 WC |
257 | if (!exts->actions) |
258 | return -ENOMEM; | |
33be6271 | 259 | #endif |
5da57f42 WC |
260 | exts->action = action; |
261 | exts->police = police; | |
b9a24bb7 | 262 | return 0; |
33be6271 WC |
263 | } |
264 | ||
e4b95c41 CW |
265 | /* Return false if the netns is being destroyed in cleanup_net(). Callers |
266 | * need to do cleanup synchronously in this case, otherwise may race with | |
267 | * tc_action_net_exit(). Return true for other cases. | |
268 | */ | |
269 | static inline bool tcf_exts_get_net(struct tcf_exts *exts) | |
270 | { | |
271 | #ifdef CONFIG_NET_CLS_ACT | |
272 | exts->net = maybe_get_net(exts->net); | |
273 | return exts->net != NULL; | |
274 | #else | |
275 | return true; | |
276 | #endif | |
277 | } | |
278 | ||
279 | static inline void tcf_exts_put_net(struct tcf_exts *exts) | |
280 | { | |
281 | #ifdef CONFIG_NET_CLS_ACT | |
282 | if (exts->net) | |
283 | put_net(exts->net); | |
284 | #endif | |
285 | } | |
286 | ||
22dc13c8 WC |
287 | static inline void tcf_exts_to_list(const struct tcf_exts *exts, |
288 | struct list_head *actions) | |
289 | { | |
290 | #ifdef CONFIG_NET_CLS_ACT | |
291 | int i; | |
292 | ||
293 | for (i = 0; i < exts->nr_actions; i++) { | |
294 | struct tc_action *a = exts->actions[i]; | |
295 | ||
fa5effe7 | 296 | list_add_tail(&a->list, actions); |
22dc13c8 WC |
297 | } |
298 | #endif | |
299 | } | |
300 | ||
d897a638 JK |
301 | static inline void |
302 | tcf_exts_stats_update(const struct tcf_exts *exts, | |
303 | u64 bytes, u64 packets, u64 lastuse) | |
304 | { | |
305 | #ifdef CONFIG_NET_CLS_ACT | |
306 | int i; | |
307 | ||
308 | preempt_disable(); | |
309 | ||
310 | for (i = 0; i < exts->nr_actions; i++) { | |
311 | struct tc_action *a = exts->actions[i]; | |
312 | ||
313 | tcf_action_stats_update(a, bytes, packets, lastuse); | |
314 | } | |
315 | ||
316 | preempt_enable(); | |
317 | #endif | |
318 | } | |
319 | ||
3bcc0cec JP |
320 | /** |
321 | * tcf_exts_has_actions - check if at least one action is present | |
322 | * @exts: tc filter extensions handle | |
323 | * | |
324 | * Returns true if at least one action is present. | |
325 | */ | |
326 | static inline bool tcf_exts_has_actions(struct tcf_exts *exts) | |
327 | { | |
2734437e | 328 | #ifdef CONFIG_NET_CLS_ACT |
3bcc0cec JP |
329 | return exts->nr_actions; |
330 | #else | |
331 | return false; | |
332 | #endif | |
333 | } | |
2734437e | 334 | |
3bcc0cec JP |
335 | /** |
336 | * tcf_exts_has_one_action - check if exactly one action is present | |
337 | * @exts: tc filter extensions handle | |
338 | * | |
339 | * Returns true if exactly one action is present. | |
340 | */ | |
341 | static inline bool tcf_exts_has_one_action(struct tcf_exts *exts) | |
342 | { | |
343 | #ifdef CONFIG_NET_CLS_ACT | |
344 | return exts->nr_actions == 1; | |
345 | #else | |
346 | return false; | |
347 | #endif | |
348 | } | |
2734437e | 349 | |
af69afc5 JP |
350 | /** |
351 | * tcf_exts_exec - execute tc filter extensions | |
352 | * @skb: socket buffer | |
353 | * @exts: tc filter extensions handle | |
354 | * @res: desired result | |
355 | * | |
af089e70 | 356 | * Executes all configured extensions. Returns TC_ACT_OK on a normal execution, |
af69afc5 JP |
357 | * a negative number if the filter must be considered unmatched or |
358 | * a positive action code (TC_ACT_*) which must be returned to the | |
359 | * underlying layer. | |
360 | */ | |
361 | static inline int | |
362 | tcf_exts_exec(struct sk_buff *skb, struct tcf_exts *exts, | |
363 | struct tcf_result *res) | |
364 | { | |
365 | #ifdef CONFIG_NET_CLS_ACT | |
ec1a9cca | 366 | return tcf_action_exec(skb, exts->actions, exts->nr_actions, res); |
af69afc5 | 367 | #endif |
af089e70 | 368 | return TC_ACT_OK; |
af69afc5 JP |
369 | } |
370 | ||
5c15257f JP |
371 | int tcf_exts_validate(struct net *net, struct tcf_proto *tp, |
372 | struct nlattr **tb, struct nlattr *rate_tlv, | |
2f7ef2f8 | 373 | struct tcf_exts *exts, bool ovr); |
18d0264f | 374 | void tcf_exts_destroy(struct tcf_exts *exts); |
9b0d4446 | 375 | void tcf_exts_change(struct tcf_exts *dst, struct tcf_exts *src); |
5da57f42 WC |
376 | int tcf_exts_dump(struct sk_buff *skb, struct tcf_exts *exts); |
377 | int tcf_exts_dump_stats(struct sk_buff *skb, struct tcf_exts *exts); | |
1da177e4 LT |
378 | |
379 | /** | |
380 | * struct tcf_pkt_info - packet information | |
381 | */ | |
fd2c3ef7 | 382 | struct tcf_pkt_info { |
1da177e4 LT |
383 | unsigned char * ptr; |
384 | int nexthdr; | |
385 | }; | |
386 | ||
387 | #ifdef CONFIG_NET_EMATCH | |
388 | ||
389 | struct tcf_ematch_ops; | |
390 | ||
391 | /** | |
392 | * struct tcf_ematch - extended match (ematch) | |
393 | * | |
394 | * @matchid: identifier to allow userspace to reidentify a match | |
395 | * @flags: flags specifying attributes and the relation to other matches | |
396 | * @ops: the operations lookup table of the corresponding ematch module | |
397 | * @datalen: length of the ematch specific configuration data | |
398 | * @data: ematch specific data | |
399 | */ | |
fd2c3ef7 | 400 | struct tcf_ematch { |
1da177e4 LT |
401 | struct tcf_ematch_ops * ops; |
402 | unsigned long data; | |
403 | unsigned int datalen; | |
404 | u16 matchid; | |
405 | u16 flags; | |
82a470f1 | 406 | struct net *net; |
1da177e4 LT |
407 | }; |
408 | ||
409 | static inline int tcf_em_is_container(struct tcf_ematch *em) | |
410 | { | |
411 | return !em->ops; | |
412 | } | |
413 | ||
414 | static inline int tcf_em_is_simple(struct tcf_ematch *em) | |
415 | { | |
416 | return em->flags & TCF_EM_SIMPLE; | |
417 | } | |
418 | ||
419 | static inline int tcf_em_is_inverted(struct tcf_ematch *em) | |
420 | { | |
421 | return em->flags & TCF_EM_INVERT; | |
422 | } | |
423 | ||
424 | static inline int tcf_em_last_match(struct tcf_ematch *em) | |
425 | { | |
426 | return (em->flags & TCF_EM_REL_MASK) == TCF_EM_REL_END; | |
427 | } | |
428 | ||
429 | static inline int tcf_em_early_end(struct tcf_ematch *em, int result) | |
430 | { | |
431 | if (tcf_em_last_match(em)) | |
432 | return 1; | |
433 | ||
434 | if (result == 0 && em->flags & TCF_EM_REL_AND) | |
435 | return 1; | |
436 | ||
437 | if (result != 0 && em->flags & TCF_EM_REL_OR) | |
438 | return 1; | |
439 | ||
440 | return 0; | |
441 | } | |
442 | ||
443 | /** | |
444 | * struct tcf_ematch_tree - ematch tree handle | |
445 | * | |
446 | * @hdr: ematch tree header supplied by userspace | |
447 | * @matches: array of ematches | |
448 | */ | |
fd2c3ef7 | 449 | struct tcf_ematch_tree { |
1da177e4 LT |
450 | struct tcf_ematch_tree_hdr hdr; |
451 | struct tcf_ematch * matches; | |
452 | ||
453 | }; | |
454 | ||
455 | /** | |
456 | * struct tcf_ematch_ops - ematch module operations | |
457 | * | |
458 | * @kind: identifier (kind) of this ematch module | |
459 | * @datalen: length of expected configuration data (optional) | |
460 | * @change: called during validation (optional) | |
461 | * @match: called during ematch tree evaluation, must return 1/0 | |
462 | * @destroy: called during destroyage (optional) | |
463 | * @dump: called during dumping process (optional) | |
464 | * @owner: owner, must be set to THIS_MODULE | |
465 | * @link: link to previous/next ematch module (internal use) | |
466 | */ | |
fd2c3ef7 | 467 | struct tcf_ematch_ops { |
1da177e4 LT |
468 | int kind; |
469 | int datalen; | |
82a470f1 | 470 | int (*change)(struct net *net, void *, |
1da177e4 LT |
471 | int, struct tcf_ematch *); |
472 | int (*match)(struct sk_buff *, struct tcf_ematch *, | |
473 | struct tcf_pkt_info *); | |
82a470f1 | 474 | void (*destroy)(struct tcf_ematch *); |
1da177e4 LT |
475 | int (*dump)(struct sk_buff *, struct tcf_ematch *); |
476 | struct module *owner; | |
477 | struct list_head link; | |
478 | }; | |
479 | ||
5c15257f JP |
480 | int tcf_em_register(struct tcf_ematch_ops *); |
481 | void tcf_em_unregister(struct tcf_ematch_ops *); | |
482 | int tcf_em_tree_validate(struct tcf_proto *, struct nlattr *, | |
483 | struct tcf_ematch_tree *); | |
82a470f1 | 484 | void tcf_em_tree_destroy(struct tcf_ematch_tree *); |
5c15257f JP |
485 | int tcf_em_tree_dump(struct sk_buff *, struct tcf_ematch_tree *, int); |
486 | int __tcf_em_tree_match(struct sk_buff *, struct tcf_ematch_tree *, | |
487 | struct tcf_pkt_info *); | |
1da177e4 | 488 | |
1da177e4 LT |
489 | /** |
490 | * tcf_em_tree_match - evaulate an ematch tree | |
491 | * | |
492 | * @skb: socket buffer of the packet in question | |
493 | * @tree: ematch tree to be used for evaluation | |
494 | * @info: packet information examined by classifier | |
495 | * | |
496 | * This function matches @skb against the ematch tree in @tree by going | |
497 | * through all ematches respecting their logic relations returning | |
498 | * as soon as the result is obvious. | |
499 | * | |
500 | * Returns 1 if the ematch tree as-one matches, no ematches are configured | |
501 | * or ematch is not enabled in the kernel, otherwise 0 is returned. | |
502 | */ | |
503 | static inline int tcf_em_tree_match(struct sk_buff *skb, | |
504 | struct tcf_ematch_tree *tree, | |
505 | struct tcf_pkt_info *info) | |
506 | { | |
507 | if (tree->hdr.nmatches) | |
508 | return __tcf_em_tree_match(skb, tree, info); | |
509 | else | |
510 | return 1; | |
511 | } | |
512 | ||
db3d99c0 PM |
513 | #define MODULE_ALIAS_TCF_EMATCH(kind) MODULE_ALIAS("ematch-kind-" __stringify(kind)) |
514 | ||
1da177e4 LT |
515 | #else /* CONFIG_NET_EMATCH */ |
516 | ||
fd2c3ef7 | 517 | struct tcf_ematch_tree { |
1da177e4 LT |
518 | }; |
519 | ||
520 | #define tcf_em_tree_validate(tp, tb, t) ((void)(t), 0) | |
82a470f1 | 521 | #define tcf_em_tree_destroy(t) do { (void)(t); } while(0) |
1da177e4 | 522 | #define tcf_em_tree_dump(skb, t, tlv) (0) |
1da177e4 LT |
523 | #define tcf_em_tree_match(skb, t, info) ((void)(info), 1) |
524 | ||
525 | #endif /* CONFIG_NET_EMATCH */ | |
526 | ||
527 | static inline unsigned char * tcf_get_base_ptr(struct sk_buff *skb, int layer) | |
528 | { | |
529 | switch (layer) { | |
530 | case TCF_LAYER_LINK: | |
d3303a65 | 531 | return skb_mac_header(skb); |
1da177e4 | 532 | case TCF_LAYER_NETWORK: |
d56f90a7 | 533 | return skb_network_header(skb); |
1da177e4 | 534 | case TCF_LAYER_TRANSPORT: |
9c70220b | 535 | return skb_transport_header(skb); |
1da177e4 LT |
536 | } |
537 | ||
538 | return NULL; | |
539 | } | |
540 | ||
eddc9ec5 ACM |
541 | static inline int tcf_valid_offset(const struct sk_buff *skb, |
542 | const unsigned char *ptr, const int len) | |
1da177e4 | 543 | { |
da521b2c DM |
544 | return likely((ptr + len) <= skb_tail_pointer(skb) && |
545 | ptr >= skb->head && | |
546 | (ptr <= (ptr + len))); | |
1da177e4 LT |
547 | } |
548 | ||
549 | #ifdef CONFIG_NET_CLS_IND | |
0eeb8ffc DL |
550 | #include <net/net_namespace.h> |
551 | ||
1da177e4 | 552 | static inline int |
2519a602 | 553 | tcf_change_indev(struct net *net, struct nlattr *indev_tlv) |
1da177e4 | 554 | { |
2519a602 WC |
555 | char indev[IFNAMSIZ]; |
556 | struct net_device *dev; | |
557 | ||
add93b61 | 558 | if (nla_strlcpy(indev, indev_tlv, IFNAMSIZ) >= IFNAMSIZ) |
1da177e4 | 559 | return -EINVAL; |
2519a602 WC |
560 | dev = __dev_get_by_name(net, indev); |
561 | if (!dev) | |
562 | return -ENODEV; | |
563 | return dev->ifindex; | |
1da177e4 LT |
564 | } |
565 | ||
2519a602 WC |
566 | static inline bool |
567 | tcf_match_indev(struct sk_buff *skb, int ifindex) | |
1da177e4 | 568 | { |
2519a602 WC |
569 | if (!ifindex) |
570 | return true; | |
571 | if (!skb->skb_iif) | |
572 | return false; | |
573 | return ifindex == skb->skb_iif; | |
1da177e4 LT |
574 | } |
575 | #endif /* CONFIG_NET_CLS_IND */ | |
576 | ||
208c0f4b JP |
577 | int tc_setup_cb_call(struct tcf_block *block, struct tcf_exts *exts, |
578 | enum tc_setup_type type, void *type_data, bool err_stop); | |
717503b9 | 579 | |
8c4083b3 JP |
580 | enum tc_block_command { |
581 | TC_BLOCK_BIND, | |
582 | TC_BLOCK_UNBIND, | |
583 | }; | |
584 | ||
585 | struct tc_block_offload { | |
586 | enum tc_block_command command; | |
587 | enum tcf_block_binder_type binder_type; | |
588 | struct tcf_block *block; | |
589 | }; | |
590 | ||
5fd9fc4e | 591 | struct tc_cls_common_offload { |
5fd9fc4e JP |
592 | u32 chain_index; |
593 | __be16 protocol; | |
d7c1c8d2 | 594 | u32 prio; |
5fd9fc4e JP |
595 | }; |
596 | ||
597 | static inline void | |
598 | tc_cls_common_offload_init(struct tc_cls_common_offload *cls_common, | |
599 | const struct tcf_proto *tp) | |
600 | { | |
5fd9fc4e JP |
601 | cls_common->chain_index = tp->chain->index; |
602 | cls_common->protocol = tp->protocol; | |
d7c1c8d2 | 603 | cls_common->prio = tp->prio; |
5fd9fc4e JP |
604 | } |
605 | ||
a1b7c5fd JF |
606 | struct tc_cls_u32_knode { |
607 | struct tcf_exts *exts; | |
e014860e | 608 | struct tc_u32_sel *sel; |
a1b7c5fd JF |
609 | u32 handle; |
610 | u32 val; | |
611 | u32 mask; | |
612 | u32 link_handle; | |
e014860e | 613 | u8 fshift; |
a1b7c5fd JF |
614 | }; |
615 | ||
616 | struct tc_cls_u32_hnode { | |
617 | u32 handle; | |
618 | u32 prio; | |
619 | unsigned int divisor; | |
620 | }; | |
621 | ||
622 | enum tc_clsu32_command { | |
623 | TC_CLSU32_NEW_KNODE, | |
624 | TC_CLSU32_REPLACE_KNODE, | |
625 | TC_CLSU32_DELETE_KNODE, | |
626 | TC_CLSU32_NEW_HNODE, | |
627 | TC_CLSU32_REPLACE_HNODE, | |
628 | TC_CLSU32_DELETE_HNODE, | |
629 | }; | |
630 | ||
631 | struct tc_cls_u32_offload { | |
5fd9fc4e | 632 | struct tc_cls_common_offload common; |
a1b7c5fd JF |
633 | /* knode values */ |
634 | enum tc_clsu32_command command; | |
635 | union { | |
636 | struct tc_cls_u32_knode knode; | |
637 | struct tc_cls_u32_hnode hnode; | |
638 | }; | |
639 | }; | |
640 | ||
7b06e8ae | 641 | static inline bool tc_can_offload(const struct net_device *dev) |
6843e7a2 | 642 | { |
70b5aee4 | 643 | return dev->features & NETIF_F_HW_TC; |
6843e7a2 JF |
644 | } |
645 | ||
55330f05 HHZ |
646 | static inline bool tc_skip_hw(u32 flags) |
647 | { | |
648 | return (flags & TCA_CLS_FLAGS_SKIP_HW) ? true : false; | |
649 | } | |
650 | ||
d34e3e18 SS |
651 | static inline bool tc_skip_sw(u32 flags) |
652 | { | |
653 | return (flags & TCA_CLS_FLAGS_SKIP_SW) ? true : false; | |
654 | } | |
655 | ||
656 | /* SKIP_HW and SKIP_SW are mutually exclusive flags. */ | |
657 | static inline bool tc_flags_valid(u32 flags) | |
658 | { | |
659 | if (flags & ~(TCA_CLS_FLAGS_SKIP_HW | TCA_CLS_FLAGS_SKIP_SW)) | |
660 | return false; | |
661 | ||
662 | if (!(flags ^ (TCA_CLS_FLAGS_SKIP_HW | TCA_CLS_FLAGS_SKIP_SW))) | |
663 | return false; | |
664 | ||
665 | return true; | |
666 | } | |
667 | ||
e696028a OG |
668 | static inline bool tc_in_hw(u32 flags) |
669 | { | |
670 | return (flags & TCA_CLS_FLAGS_IN_HW) ? true : false; | |
671 | } | |
672 | ||
5b33f488 AV |
673 | enum tc_fl_command { |
674 | TC_CLSFLOWER_REPLACE, | |
675 | TC_CLSFLOWER_DESTROY, | |
10cbc684 | 676 | TC_CLSFLOWER_STATS, |
5b33f488 AV |
677 | }; |
678 | ||
679 | struct tc_cls_flower_offload { | |
5fd9fc4e | 680 | struct tc_cls_common_offload common; |
5b33f488 | 681 | enum tc_fl_command command; |
8208d21b | 682 | unsigned long cookie; |
5b33f488 AV |
683 | struct flow_dissector *dissector; |
684 | struct fl_flow_key *mask; | |
685 | struct fl_flow_key *key; | |
686 | struct tcf_exts *exts; | |
384c181e | 687 | u32 classid; |
5b33f488 AV |
688 | }; |
689 | ||
b87f7936 YG |
690 | enum tc_matchall_command { |
691 | TC_CLSMATCHALL_REPLACE, | |
692 | TC_CLSMATCHALL_DESTROY, | |
693 | }; | |
694 | ||
695 | struct tc_cls_matchall_offload { | |
5fd9fc4e | 696 | struct tc_cls_common_offload common; |
b87f7936 YG |
697 | enum tc_matchall_command command; |
698 | struct tcf_exts *exts; | |
699 | unsigned long cookie; | |
700 | }; | |
701 | ||
332ae8e2 | 702 | enum tc_clsbpf_command { |
102740bd | 703 | TC_CLSBPF_OFFLOAD, |
68d64063 | 704 | TC_CLSBPF_STATS, |
332ae8e2 JK |
705 | }; |
706 | ||
707 | struct tc_cls_bpf_offload { | |
5fd9fc4e | 708 | struct tc_cls_common_offload common; |
332ae8e2 JK |
709 | enum tc_clsbpf_command command; |
710 | struct tcf_exts *exts; | |
711 | struct bpf_prog *prog; | |
102740bd | 712 | struct bpf_prog *oldprog; |
332ae8e2 JK |
713 | const char *name; |
714 | bool exts_integrated; | |
0d01d45f | 715 | u32 gen_flags; |
332ae8e2 JK |
716 | }; |
717 | ||
4e8b86c0 AN |
718 | struct tc_mqprio_qopt_offload { |
719 | /* struct tc_mqprio_qopt must always be the first element */ | |
720 | struct tc_mqprio_qopt qopt; | |
721 | u16 mode; | |
722 | u16 shaper; | |
723 | u32 flags; | |
724 | u64 min_rate[TC_QOPT_MAX_QUEUE]; | |
725 | u64 max_rate[TC_QOPT_MAX_QUEUE]; | |
726 | }; | |
1045ba77 JHS |
727 | |
728 | /* This structure holds cookie structure that is passed from user | |
729 | * to the kernel for actions and classifiers | |
730 | */ | |
731 | struct tc_cookie { | |
732 | u8 *data; | |
733 | u32 len; | |
734 | }; | |
602f3baf NF |
735 | |
736 | enum tc_red_command { | |
737 | TC_RED_REPLACE, | |
738 | TC_RED_DESTROY, | |
739 | TC_RED_STATS, | |
740 | TC_RED_XSTATS, | |
741 | }; | |
742 | ||
743 | struct tc_red_qopt_offload_params { | |
744 | u32 min; | |
745 | u32 max; | |
746 | u32 probability; | |
747 | bool is_ecn; | |
748 | }; | |
749 | struct tc_red_qopt_offload_stats { | |
750 | struct gnet_stats_basic_packed *bstats; | |
751 | struct gnet_stats_queue *qstats; | |
752 | }; | |
753 | ||
754 | struct tc_red_qopt_offload { | |
755 | enum tc_red_command command; | |
756 | u32 handle; | |
757 | u32 parent; | |
758 | union { | |
759 | struct tc_red_qopt_offload_params set; | |
760 | struct tc_red_qopt_offload_stats stats; | |
761 | struct red_stats *xstats; | |
762 | }; | |
763 | }; | |
764 | ||
1da177e4 | 765 | #endif |