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; |
7aa0045d | 35 | bool tcf_queue_work(struct work_struct *work); |
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, |
8d1a77f9 AA |
42 | struct tcf_proto __rcu **p_filter_chain, struct Qdisc *q, |
43 | struct netlink_ext_ack *extack); | |
c7eb7d72 | 44 | int tcf_block_get_ext(struct tcf_block **p_block, struct Qdisc *q, |
8d1a77f9 AA |
45 | struct tcf_block_ext_info *ei, |
46 | struct netlink_ext_ack *extack); | |
6529eaba | 47 | void tcf_block_put(struct tcf_block *block); |
c7eb7d72 | 48 | void tcf_block_put_ext(struct tcf_block *block, struct Qdisc *q, |
8c4083b3 | 49 | struct tcf_block_ext_info *ei); |
44186460 JP |
50 | |
51 | static inline struct Qdisc *tcf_block_q(struct tcf_block *block) | |
52 | { | |
53 | return block->q; | |
54 | } | |
55 | ||
56 | static inline struct net_device *tcf_block_dev(struct tcf_block *block) | |
57 | { | |
58 | return tcf_block_q(block)->dev_queue->dev; | |
59 | } | |
60 | ||
acb67442 JP |
61 | void *tcf_block_cb_priv(struct tcf_block_cb *block_cb); |
62 | struct tcf_block_cb *tcf_block_cb_lookup(struct tcf_block *block, | |
63 | tc_setup_cb_t *cb, void *cb_ident); | |
64 | void tcf_block_cb_incref(struct tcf_block_cb *block_cb); | |
65 | unsigned int tcf_block_cb_decref(struct tcf_block_cb *block_cb); | |
66 | struct tcf_block_cb *__tcf_block_cb_register(struct tcf_block *block, | |
67 | tc_setup_cb_t *cb, void *cb_ident, | |
68 | void *cb_priv); | |
69 | int tcf_block_cb_register(struct tcf_block *block, | |
70 | tc_setup_cb_t *cb, void *cb_ident, | |
71 | void *cb_priv); | |
72 | void __tcf_block_cb_unregister(struct tcf_block_cb *block_cb); | |
73 | void tcf_block_cb_unregister(struct tcf_block *block, | |
74 | tc_setup_cb_t *cb, void *cb_ident); | |
75 | ||
87d83093 JP |
76 | int tcf_classify(struct sk_buff *skb, const struct tcf_proto *tp, |
77 | struct tcf_result *res, bool compat_mode); | |
78 | ||
8ae70032 | 79 | #else |
6529eaba JP |
80 | static inline |
81 | int tcf_block_get(struct tcf_block **p_block, | |
3c149091 SM |
82 | struct tcf_proto __rcu **p_filter_chain, struct Qdisc *q, |
83 | struct netlink_ext_ack *extack) | |
6529eaba JP |
84 | { |
85 | return 0; | |
86 | } | |
87 | ||
8c4083b3 | 88 | static inline |
c7eb7d72 | 89 | int tcf_block_get_ext(struct tcf_block **p_block, struct Qdisc *q, |
33c30a8b QM |
90 | struct tcf_block_ext_info *ei, |
91 | struct netlink_ext_ack *extack) | |
8c4083b3 JP |
92 | { |
93 | return 0; | |
94 | } | |
95 | ||
6529eaba | 96 | static inline void tcf_block_put(struct tcf_block *block) |
8ae70032 JP |
97 | { |
98 | } | |
87d83093 | 99 | |
8c4083b3 | 100 | static inline |
c7eb7d72 | 101 | void tcf_block_put_ext(struct tcf_block *block, struct Qdisc *q, |
8c4083b3 JP |
102 | struct tcf_block_ext_info *ei) |
103 | { | |
104 | } | |
105 | ||
44186460 JP |
106 | static inline struct Qdisc *tcf_block_q(struct tcf_block *block) |
107 | { | |
108 | return NULL; | |
109 | } | |
110 | ||
111 | static inline struct net_device *tcf_block_dev(struct tcf_block *block) | |
112 | { | |
113 | return NULL; | |
114 | } | |
115 | ||
acb67442 JP |
116 | static inline |
117 | int tc_setup_cb_block_register(struct tcf_block *block, tc_setup_cb_t *cb, | |
118 | void *cb_priv) | |
119 | { | |
120 | return 0; | |
121 | } | |
122 | ||
123 | static inline | |
124 | void tc_setup_cb_block_unregister(struct tcf_block *block, tc_setup_cb_t *cb, | |
125 | void *cb_priv) | |
126 | { | |
127 | } | |
128 | ||
129 | static inline | |
130 | void *tcf_block_cb_priv(struct tcf_block_cb *block_cb) | |
131 | { | |
132 | return NULL; | |
133 | } | |
134 | ||
135 | static inline | |
136 | struct tcf_block_cb *tcf_block_cb_lookup(struct tcf_block *block, | |
137 | tc_setup_cb_t *cb, void *cb_ident) | |
138 | { | |
139 | return NULL; | |
140 | } | |
141 | ||
142 | static inline | |
143 | void tcf_block_cb_incref(struct tcf_block_cb *block_cb) | |
144 | { | |
145 | } | |
146 | ||
147 | static inline | |
148 | unsigned int tcf_block_cb_decref(struct tcf_block_cb *block_cb) | |
149 | { | |
150 | return 0; | |
151 | } | |
152 | ||
153 | static inline | |
154 | struct tcf_block_cb *__tcf_block_cb_register(struct tcf_block *block, | |
155 | tc_setup_cb_t *cb, void *cb_ident, | |
156 | void *cb_priv) | |
157 | { | |
158 | return NULL; | |
159 | } | |
160 | ||
161 | static inline | |
162 | int tcf_block_cb_register(struct tcf_block *block, | |
163 | tc_setup_cb_t *cb, void *cb_ident, | |
164 | void *cb_priv) | |
165 | { | |
166 | return 0; | |
167 | } | |
168 | ||
169 | static inline | |
170 | void __tcf_block_cb_unregister(struct tcf_block_cb *block_cb) | |
171 | { | |
172 | } | |
173 | ||
174 | static inline | |
175 | void tcf_block_cb_unregister(struct tcf_block *block, | |
176 | tc_setup_cb_t *cb, void *cb_ident) | |
177 | { | |
178 | } | |
179 | ||
87d83093 JP |
180 | static inline int tcf_classify(struct sk_buff *skb, const struct tcf_proto *tp, |
181 | struct tcf_result *res, bool compat_mode) | |
182 | { | |
183 | return TC_ACT_UNSPEC; | |
184 | } | |
8ae70032 | 185 | #endif |
cf1facda | 186 | |
1da177e4 LT |
187 | static inline unsigned long |
188 | __cls_set_class(unsigned long *clp, unsigned long cl) | |
189 | { | |
a0efb80c | 190 | return xchg(clp, cl); |
1da177e4 LT |
191 | } |
192 | ||
193 | static inline unsigned long | |
34e3759c | 194 | cls_set_class(struct Qdisc *q, unsigned long *clp, unsigned long cl) |
1da177e4 LT |
195 | { |
196 | unsigned long old_cl; | |
34e3759c JP |
197 | |
198 | sch_tree_lock(q); | |
1da177e4 | 199 | old_cl = __cls_set_class(clp, cl); |
34e3759c | 200 | sch_tree_unlock(q); |
1da177e4 LT |
201 | return old_cl; |
202 | } | |
203 | ||
204 | static inline void | |
205 | tcf_bind_filter(struct tcf_proto *tp, struct tcf_result *r, unsigned long base) | |
206 | { | |
34e3759c | 207 | struct Qdisc *q = tp->chain->block->q; |
1da177e4 LT |
208 | unsigned long cl; |
209 | ||
34e3759c JP |
210 | /* Check q as it is not set for shared blocks. In that case, |
211 | * setting class is not supported. | |
212 | */ | |
213 | if (!q) | |
214 | return; | |
215 | cl = q->ops->cl_ops->bind_tcf(q, base, r->classid); | |
216 | cl = cls_set_class(q, &r->class, cl); | |
1da177e4 | 217 | if (cl) |
34e3759c | 218 | q->ops->cl_ops->unbind_tcf(q, cl); |
1da177e4 LT |
219 | } |
220 | ||
221 | static inline void | |
222 | tcf_unbind_filter(struct tcf_proto *tp, struct tcf_result *r) | |
223 | { | |
34e3759c | 224 | struct Qdisc *q = tp->chain->block->q; |
1da177e4 LT |
225 | unsigned long cl; |
226 | ||
34e3759c JP |
227 | if (!q) |
228 | return; | |
1da177e4 | 229 | if ((cl = __cls_set_class(&r->class, 0)) != 0) |
34e3759c | 230 | q->ops->cl_ops->unbind_tcf(q, cl); |
1da177e4 LT |
231 | } |
232 | ||
fd2c3ef7 | 233 | struct tcf_exts { |
1da177e4 | 234 | #ifdef CONFIG_NET_CLS_ACT |
33be6271 | 235 | __u32 type; /* for backward compat(TCA_OLD_COMPAT) */ |
22dc13c8 WC |
236 | int nr_actions; |
237 | struct tc_action **actions; | |
e4b95c41 | 238 | struct net *net; |
1da177e4 | 239 | #endif |
5da57f42 WC |
240 | /* Map to export classifier specific extension TLV types to the |
241 | * generic extensions API. Unsupported extensions must be set to 0. | |
242 | */ | |
1da177e4 LT |
243 | int action; |
244 | int police; | |
245 | }; | |
246 | ||
b9a24bb7 | 247 | static inline int tcf_exts_init(struct tcf_exts *exts, int action, int police) |
33be6271 WC |
248 | { |
249 | #ifdef CONFIG_NET_CLS_ACT | |
5da57f42 | 250 | exts->type = 0; |
22dc13c8 | 251 | exts->nr_actions = 0; |
e4b95c41 | 252 | exts->net = NULL; |
22dc13c8 WC |
253 | exts->actions = kcalloc(TCA_ACT_MAX_PRIO, sizeof(struct tc_action *), |
254 | GFP_KERNEL); | |
b9a24bb7 WC |
255 | if (!exts->actions) |
256 | return -ENOMEM; | |
33be6271 | 257 | #endif |
5da57f42 WC |
258 | exts->action = action; |
259 | exts->police = police; | |
b9a24bb7 | 260 | return 0; |
33be6271 WC |
261 | } |
262 | ||
e4b95c41 CW |
263 | /* Return false if the netns is being destroyed in cleanup_net(). Callers |
264 | * need to do cleanup synchronously in this case, otherwise may race with | |
265 | * tc_action_net_exit(). Return true for other cases. | |
266 | */ | |
267 | static inline bool tcf_exts_get_net(struct tcf_exts *exts) | |
268 | { | |
269 | #ifdef CONFIG_NET_CLS_ACT | |
270 | exts->net = maybe_get_net(exts->net); | |
271 | return exts->net != NULL; | |
272 | #else | |
273 | return true; | |
274 | #endif | |
275 | } | |
276 | ||
277 | static inline void tcf_exts_put_net(struct tcf_exts *exts) | |
278 | { | |
279 | #ifdef CONFIG_NET_CLS_ACT | |
280 | if (exts->net) | |
281 | put_net(exts->net); | |
282 | #endif | |
283 | } | |
284 | ||
22dc13c8 WC |
285 | static inline void tcf_exts_to_list(const struct tcf_exts *exts, |
286 | struct list_head *actions) | |
287 | { | |
288 | #ifdef CONFIG_NET_CLS_ACT | |
289 | int i; | |
290 | ||
291 | for (i = 0; i < exts->nr_actions; i++) { | |
292 | struct tc_action *a = exts->actions[i]; | |
293 | ||
fa5effe7 | 294 | list_add_tail(&a->list, actions); |
22dc13c8 WC |
295 | } |
296 | #endif | |
297 | } | |
298 | ||
d897a638 JK |
299 | static inline void |
300 | tcf_exts_stats_update(const struct tcf_exts *exts, | |
301 | u64 bytes, u64 packets, u64 lastuse) | |
302 | { | |
303 | #ifdef CONFIG_NET_CLS_ACT | |
304 | int i; | |
305 | ||
306 | preempt_disable(); | |
307 | ||
308 | for (i = 0; i < exts->nr_actions; i++) { | |
309 | struct tc_action *a = exts->actions[i]; | |
310 | ||
311 | tcf_action_stats_update(a, bytes, packets, lastuse); | |
312 | } | |
313 | ||
314 | preempt_enable(); | |
315 | #endif | |
316 | } | |
317 | ||
3bcc0cec JP |
318 | /** |
319 | * tcf_exts_has_actions - check if at least one action is present | |
320 | * @exts: tc filter extensions handle | |
321 | * | |
322 | * Returns true if at least one action is present. | |
323 | */ | |
324 | static inline bool tcf_exts_has_actions(struct tcf_exts *exts) | |
325 | { | |
2734437e | 326 | #ifdef CONFIG_NET_CLS_ACT |
3bcc0cec JP |
327 | return exts->nr_actions; |
328 | #else | |
329 | return false; | |
330 | #endif | |
331 | } | |
2734437e | 332 | |
3bcc0cec JP |
333 | /** |
334 | * tcf_exts_has_one_action - check if exactly one action is present | |
335 | * @exts: tc filter extensions handle | |
336 | * | |
337 | * Returns true if exactly one action is present. | |
338 | */ | |
339 | static inline bool tcf_exts_has_one_action(struct tcf_exts *exts) | |
340 | { | |
341 | #ifdef CONFIG_NET_CLS_ACT | |
342 | return exts->nr_actions == 1; | |
343 | #else | |
344 | return false; | |
345 | #endif | |
346 | } | |
2734437e | 347 | |
af69afc5 JP |
348 | /** |
349 | * tcf_exts_exec - execute tc filter extensions | |
350 | * @skb: socket buffer | |
351 | * @exts: tc filter extensions handle | |
352 | * @res: desired result | |
353 | * | |
af089e70 | 354 | * Executes all configured extensions. Returns TC_ACT_OK on a normal execution, |
af69afc5 JP |
355 | * a negative number if the filter must be considered unmatched or |
356 | * a positive action code (TC_ACT_*) which must be returned to the | |
357 | * underlying layer. | |
358 | */ | |
359 | static inline int | |
360 | tcf_exts_exec(struct sk_buff *skb, struct tcf_exts *exts, | |
361 | struct tcf_result *res) | |
362 | { | |
363 | #ifdef CONFIG_NET_CLS_ACT | |
ec1a9cca | 364 | return tcf_action_exec(skb, exts->actions, exts->nr_actions, res); |
af69afc5 | 365 | #endif |
af089e70 | 366 | return TC_ACT_OK; |
af69afc5 JP |
367 | } |
368 | ||
5c15257f JP |
369 | int tcf_exts_validate(struct net *net, struct tcf_proto *tp, |
370 | struct nlattr **tb, struct nlattr *rate_tlv, | |
2f7ef2f8 | 371 | struct tcf_exts *exts, bool ovr); |
18d0264f | 372 | void tcf_exts_destroy(struct tcf_exts *exts); |
9b0d4446 | 373 | void tcf_exts_change(struct tcf_exts *dst, struct tcf_exts *src); |
5da57f42 WC |
374 | int tcf_exts_dump(struct sk_buff *skb, struct tcf_exts *exts); |
375 | int tcf_exts_dump_stats(struct sk_buff *skb, struct tcf_exts *exts); | |
1da177e4 LT |
376 | |
377 | /** | |
378 | * struct tcf_pkt_info - packet information | |
379 | */ | |
fd2c3ef7 | 380 | struct tcf_pkt_info { |
1da177e4 LT |
381 | unsigned char * ptr; |
382 | int nexthdr; | |
383 | }; | |
384 | ||
385 | #ifdef CONFIG_NET_EMATCH | |
386 | ||
387 | struct tcf_ematch_ops; | |
388 | ||
389 | /** | |
390 | * struct tcf_ematch - extended match (ematch) | |
391 | * | |
392 | * @matchid: identifier to allow userspace to reidentify a match | |
393 | * @flags: flags specifying attributes and the relation to other matches | |
394 | * @ops: the operations lookup table of the corresponding ematch module | |
395 | * @datalen: length of the ematch specific configuration data | |
396 | * @data: ematch specific data | |
397 | */ | |
fd2c3ef7 | 398 | struct tcf_ematch { |
1da177e4 LT |
399 | struct tcf_ematch_ops * ops; |
400 | unsigned long data; | |
401 | unsigned int datalen; | |
402 | u16 matchid; | |
403 | u16 flags; | |
82a470f1 | 404 | struct net *net; |
1da177e4 LT |
405 | }; |
406 | ||
407 | static inline int tcf_em_is_container(struct tcf_ematch *em) | |
408 | { | |
409 | return !em->ops; | |
410 | } | |
411 | ||
412 | static inline int tcf_em_is_simple(struct tcf_ematch *em) | |
413 | { | |
414 | return em->flags & TCF_EM_SIMPLE; | |
415 | } | |
416 | ||
417 | static inline int tcf_em_is_inverted(struct tcf_ematch *em) | |
418 | { | |
419 | return em->flags & TCF_EM_INVERT; | |
420 | } | |
421 | ||
422 | static inline int tcf_em_last_match(struct tcf_ematch *em) | |
423 | { | |
424 | return (em->flags & TCF_EM_REL_MASK) == TCF_EM_REL_END; | |
425 | } | |
426 | ||
427 | static inline int tcf_em_early_end(struct tcf_ematch *em, int result) | |
428 | { | |
429 | if (tcf_em_last_match(em)) | |
430 | return 1; | |
431 | ||
432 | if (result == 0 && em->flags & TCF_EM_REL_AND) | |
433 | return 1; | |
434 | ||
435 | if (result != 0 && em->flags & TCF_EM_REL_OR) | |
436 | return 1; | |
437 | ||
438 | return 0; | |
439 | } | |
440 | ||
441 | /** | |
442 | * struct tcf_ematch_tree - ematch tree handle | |
443 | * | |
444 | * @hdr: ematch tree header supplied by userspace | |
445 | * @matches: array of ematches | |
446 | */ | |
fd2c3ef7 | 447 | struct tcf_ematch_tree { |
1da177e4 LT |
448 | struct tcf_ematch_tree_hdr hdr; |
449 | struct tcf_ematch * matches; | |
450 | ||
451 | }; | |
452 | ||
453 | /** | |
454 | * struct tcf_ematch_ops - ematch module operations | |
455 | * | |
456 | * @kind: identifier (kind) of this ematch module | |
457 | * @datalen: length of expected configuration data (optional) | |
458 | * @change: called during validation (optional) | |
459 | * @match: called during ematch tree evaluation, must return 1/0 | |
460 | * @destroy: called during destroyage (optional) | |
461 | * @dump: called during dumping process (optional) | |
462 | * @owner: owner, must be set to THIS_MODULE | |
463 | * @link: link to previous/next ematch module (internal use) | |
464 | */ | |
fd2c3ef7 | 465 | struct tcf_ematch_ops { |
1da177e4 LT |
466 | int kind; |
467 | int datalen; | |
82a470f1 | 468 | int (*change)(struct net *net, void *, |
1da177e4 LT |
469 | int, struct tcf_ematch *); |
470 | int (*match)(struct sk_buff *, struct tcf_ematch *, | |
471 | struct tcf_pkt_info *); | |
82a470f1 | 472 | void (*destroy)(struct tcf_ematch *); |
1da177e4 LT |
473 | int (*dump)(struct sk_buff *, struct tcf_ematch *); |
474 | struct module *owner; | |
475 | struct list_head link; | |
476 | }; | |
477 | ||
5c15257f JP |
478 | int tcf_em_register(struct tcf_ematch_ops *); |
479 | void tcf_em_unregister(struct tcf_ematch_ops *); | |
480 | int tcf_em_tree_validate(struct tcf_proto *, struct nlattr *, | |
481 | struct tcf_ematch_tree *); | |
82a470f1 | 482 | void tcf_em_tree_destroy(struct tcf_ematch_tree *); |
5c15257f JP |
483 | int tcf_em_tree_dump(struct sk_buff *, struct tcf_ematch_tree *, int); |
484 | int __tcf_em_tree_match(struct sk_buff *, struct tcf_ematch_tree *, | |
485 | struct tcf_pkt_info *); | |
1da177e4 | 486 | |
1da177e4 LT |
487 | /** |
488 | * tcf_em_tree_match - evaulate an ematch tree | |
489 | * | |
490 | * @skb: socket buffer of the packet in question | |
491 | * @tree: ematch tree to be used for evaluation | |
492 | * @info: packet information examined by classifier | |
493 | * | |
494 | * This function matches @skb against the ematch tree in @tree by going | |
495 | * through all ematches respecting their logic relations returning | |
496 | * as soon as the result is obvious. | |
497 | * | |
498 | * Returns 1 if the ematch tree as-one matches, no ematches are configured | |
499 | * or ematch is not enabled in the kernel, otherwise 0 is returned. | |
500 | */ | |
501 | static inline int tcf_em_tree_match(struct sk_buff *skb, | |
502 | struct tcf_ematch_tree *tree, | |
503 | struct tcf_pkt_info *info) | |
504 | { | |
505 | if (tree->hdr.nmatches) | |
506 | return __tcf_em_tree_match(skb, tree, info); | |
507 | else | |
508 | return 1; | |
509 | } | |
510 | ||
db3d99c0 PM |
511 | #define MODULE_ALIAS_TCF_EMATCH(kind) MODULE_ALIAS("ematch-kind-" __stringify(kind)) |
512 | ||
1da177e4 LT |
513 | #else /* CONFIG_NET_EMATCH */ |
514 | ||
fd2c3ef7 | 515 | struct tcf_ematch_tree { |
1da177e4 LT |
516 | }; |
517 | ||
518 | #define tcf_em_tree_validate(tp, tb, t) ((void)(t), 0) | |
82a470f1 | 519 | #define tcf_em_tree_destroy(t) do { (void)(t); } while(0) |
1da177e4 | 520 | #define tcf_em_tree_dump(skb, t, tlv) (0) |
1da177e4 LT |
521 | #define tcf_em_tree_match(skb, t, info) ((void)(info), 1) |
522 | ||
523 | #endif /* CONFIG_NET_EMATCH */ | |
524 | ||
525 | static inline unsigned char * tcf_get_base_ptr(struct sk_buff *skb, int layer) | |
526 | { | |
527 | switch (layer) { | |
528 | case TCF_LAYER_LINK: | |
529 | return skb->data; | |
530 | case TCF_LAYER_NETWORK: | |
d56f90a7 | 531 | return skb_network_header(skb); |
1da177e4 | 532 | case TCF_LAYER_TRANSPORT: |
9c70220b | 533 | return skb_transport_header(skb); |
1da177e4 LT |
534 | } |
535 | ||
536 | return NULL; | |
537 | } | |
538 | ||
eddc9ec5 ACM |
539 | static inline int tcf_valid_offset(const struct sk_buff *skb, |
540 | const unsigned char *ptr, const int len) | |
1da177e4 | 541 | { |
da521b2c DM |
542 | return likely((ptr + len) <= skb_tail_pointer(skb) && |
543 | ptr >= skb->head && | |
544 | (ptr <= (ptr + len))); | |
1da177e4 LT |
545 | } |
546 | ||
547 | #ifdef CONFIG_NET_CLS_IND | |
0eeb8ffc DL |
548 | #include <net/net_namespace.h> |
549 | ||
1da177e4 | 550 | static inline int |
2519a602 | 551 | tcf_change_indev(struct net *net, struct nlattr *indev_tlv) |
1da177e4 | 552 | { |
2519a602 WC |
553 | char indev[IFNAMSIZ]; |
554 | struct net_device *dev; | |
555 | ||
add93b61 | 556 | if (nla_strlcpy(indev, indev_tlv, IFNAMSIZ) >= IFNAMSIZ) |
1da177e4 | 557 | return -EINVAL; |
2519a602 WC |
558 | dev = __dev_get_by_name(net, indev); |
559 | if (!dev) | |
560 | return -ENODEV; | |
561 | return dev->ifindex; | |
1da177e4 LT |
562 | } |
563 | ||
2519a602 WC |
564 | static inline bool |
565 | tcf_match_indev(struct sk_buff *skb, int ifindex) | |
1da177e4 | 566 | { |
2519a602 WC |
567 | if (!ifindex) |
568 | return true; | |
569 | if (!skb->skb_iif) | |
570 | return false; | |
571 | return ifindex == skb->skb_iif; | |
1da177e4 LT |
572 | } |
573 | #endif /* CONFIG_NET_CLS_IND */ | |
574 | ||
208c0f4b JP |
575 | int tc_setup_cb_call(struct tcf_block *block, struct tcf_exts *exts, |
576 | enum tc_setup_type type, void *type_data, bool err_stop); | |
717503b9 | 577 | |
8c4083b3 JP |
578 | enum tc_block_command { |
579 | TC_BLOCK_BIND, | |
580 | TC_BLOCK_UNBIND, | |
581 | }; | |
582 | ||
583 | struct tc_block_offload { | |
584 | enum tc_block_command command; | |
585 | enum tcf_block_binder_type binder_type; | |
586 | struct tcf_block *block; | |
587 | }; | |
588 | ||
5fd9fc4e | 589 | struct tc_cls_common_offload { |
5fd9fc4e JP |
590 | u32 chain_index; |
591 | __be16 protocol; | |
d7c1c8d2 | 592 | u32 prio; |
5fd9fc4e JP |
593 | }; |
594 | ||
595 | static inline void | |
596 | tc_cls_common_offload_init(struct tc_cls_common_offload *cls_common, | |
597 | const struct tcf_proto *tp) | |
598 | { | |
5fd9fc4e JP |
599 | cls_common->chain_index = tp->chain->index; |
600 | cls_common->protocol = tp->protocol; | |
d7c1c8d2 | 601 | cls_common->prio = tp->prio; |
5fd9fc4e JP |
602 | } |
603 | ||
a1b7c5fd JF |
604 | struct tc_cls_u32_knode { |
605 | struct tcf_exts *exts; | |
e014860e | 606 | struct tc_u32_sel *sel; |
a1b7c5fd JF |
607 | u32 handle; |
608 | u32 val; | |
609 | u32 mask; | |
610 | u32 link_handle; | |
e014860e | 611 | u8 fshift; |
a1b7c5fd JF |
612 | }; |
613 | ||
614 | struct tc_cls_u32_hnode { | |
615 | u32 handle; | |
616 | u32 prio; | |
617 | unsigned int divisor; | |
618 | }; | |
619 | ||
620 | enum tc_clsu32_command { | |
621 | TC_CLSU32_NEW_KNODE, | |
622 | TC_CLSU32_REPLACE_KNODE, | |
623 | TC_CLSU32_DELETE_KNODE, | |
624 | TC_CLSU32_NEW_HNODE, | |
625 | TC_CLSU32_REPLACE_HNODE, | |
626 | TC_CLSU32_DELETE_HNODE, | |
627 | }; | |
628 | ||
629 | struct tc_cls_u32_offload { | |
5fd9fc4e | 630 | struct tc_cls_common_offload common; |
a1b7c5fd JF |
631 | /* knode values */ |
632 | enum tc_clsu32_command command; | |
633 | union { | |
634 | struct tc_cls_u32_knode knode; | |
635 | struct tc_cls_u32_hnode hnode; | |
636 | }; | |
637 | }; | |
638 | ||
7b06e8ae | 639 | static inline bool tc_can_offload(const struct net_device *dev) |
6843e7a2 | 640 | { |
70b5aee4 | 641 | return dev->features & NETIF_F_HW_TC; |
6843e7a2 JF |
642 | } |
643 | ||
55330f05 HHZ |
644 | static inline bool tc_skip_hw(u32 flags) |
645 | { | |
646 | return (flags & TCA_CLS_FLAGS_SKIP_HW) ? true : false; | |
647 | } | |
648 | ||
d34e3e18 SS |
649 | static inline bool tc_skip_sw(u32 flags) |
650 | { | |
651 | return (flags & TCA_CLS_FLAGS_SKIP_SW) ? true : false; | |
652 | } | |
653 | ||
654 | /* SKIP_HW and SKIP_SW are mutually exclusive flags. */ | |
655 | static inline bool tc_flags_valid(u32 flags) | |
656 | { | |
657 | if (flags & ~(TCA_CLS_FLAGS_SKIP_HW | TCA_CLS_FLAGS_SKIP_SW)) | |
658 | return false; | |
659 | ||
660 | if (!(flags ^ (TCA_CLS_FLAGS_SKIP_HW | TCA_CLS_FLAGS_SKIP_SW))) | |
661 | return false; | |
662 | ||
663 | return true; | |
664 | } | |
665 | ||
e696028a OG |
666 | static inline bool tc_in_hw(u32 flags) |
667 | { | |
668 | return (flags & TCA_CLS_FLAGS_IN_HW) ? true : false; | |
669 | } | |
670 | ||
5b33f488 AV |
671 | enum tc_fl_command { |
672 | TC_CLSFLOWER_REPLACE, | |
673 | TC_CLSFLOWER_DESTROY, | |
10cbc684 | 674 | TC_CLSFLOWER_STATS, |
5b33f488 AV |
675 | }; |
676 | ||
677 | struct tc_cls_flower_offload { | |
5fd9fc4e | 678 | struct tc_cls_common_offload common; |
5b33f488 | 679 | enum tc_fl_command command; |
8208d21b | 680 | unsigned long cookie; |
5b33f488 AV |
681 | struct flow_dissector *dissector; |
682 | struct fl_flow_key *mask; | |
683 | struct fl_flow_key *key; | |
684 | struct tcf_exts *exts; | |
384c181e | 685 | u32 classid; |
5b33f488 AV |
686 | }; |
687 | ||
b87f7936 YG |
688 | enum tc_matchall_command { |
689 | TC_CLSMATCHALL_REPLACE, | |
690 | TC_CLSMATCHALL_DESTROY, | |
691 | }; | |
692 | ||
693 | struct tc_cls_matchall_offload { | |
5fd9fc4e | 694 | struct tc_cls_common_offload common; |
b87f7936 YG |
695 | enum tc_matchall_command command; |
696 | struct tcf_exts *exts; | |
697 | unsigned long cookie; | |
698 | }; | |
699 | ||
332ae8e2 | 700 | enum tc_clsbpf_command { |
102740bd | 701 | TC_CLSBPF_OFFLOAD, |
68d64063 | 702 | TC_CLSBPF_STATS, |
332ae8e2 JK |
703 | }; |
704 | ||
705 | struct tc_cls_bpf_offload { | |
5fd9fc4e | 706 | struct tc_cls_common_offload common; |
332ae8e2 JK |
707 | enum tc_clsbpf_command command; |
708 | struct tcf_exts *exts; | |
709 | struct bpf_prog *prog; | |
102740bd | 710 | struct bpf_prog *oldprog; |
332ae8e2 JK |
711 | const char *name; |
712 | bool exts_integrated; | |
0d01d45f | 713 | u32 gen_flags; |
332ae8e2 JK |
714 | }; |
715 | ||
4e8b86c0 AN |
716 | struct tc_mqprio_qopt_offload { |
717 | /* struct tc_mqprio_qopt must always be the first element */ | |
718 | struct tc_mqprio_qopt qopt; | |
719 | u16 mode; | |
720 | u16 shaper; | |
721 | u32 flags; | |
722 | u64 min_rate[TC_QOPT_MAX_QUEUE]; | |
723 | u64 max_rate[TC_QOPT_MAX_QUEUE]; | |
724 | }; | |
1045ba77 JHS |
725 | |
726 | /* This structure holds cookie structure that is passed from user | |
727 | * to the kernel for actions and classifiers | |
728 | */ | |
729 | struct tc_cookie { | |
730 | u8 *data; | |
731 | u32 len; | |
732 | }; | |
602f3baf NF |
733 | |
734 | enum tc_red_command { | |
735 | TC_RED_REPLACE, | |
736 | TC_RED_DESTROY, | |
737 | TC_RED_STATS, | |
738 | TC_RED_XSTATS, | |
739 | }; | |
740 | ||
741 | struct tc_red_qopt_offload_params { | |
742 | u32 min; | |
743 | u32 max; | |
744 | u32 probability; | |
745 | bool is_ecn; | |
746 | }; | |
747 | struct tc_red_qopt_offload_stats { | |
748 | struct gnet_stats_basic_packed *bstats; | |
749 | struct gnet_stats_queue *qstats; | |
750 | }; | |
751 | ||
752 | struct tc_red_qopt_offload { | |
753 | enum tc_red_command command; | |
754 | u32 handle; | |
755 | u32 parent; | |
756 | union { | |
757 | struct tc_red_qopt_offload_params set; | |
758 | struct tc_red_qopt_offload_stats stats; | |
759 | struct red_stats *xstats; | |
760 | }; | |
761 | }; | |
762 | ||
1da177e4 | 763 | #endif |