Commit | Line | Data |
---|---|---|
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; | |
48617387 | 32 | u32 block_index; |
8c4083b3 JP |
33 | }; |
34 | ||
acb67442 | 35 | struct tcf_block_cb; |
7aa0045d | 36 | bool tcf_queue_work(struct work_struct *work); |
acb67442 | 37 | |
8ae70032 | 38 | #ifdef CONFIG_NET_CLS |
367a8ce8 WC |
39 | struct tcf_chain *tcf_chain_get(struct tcf_block *block, u32 chain_index, |
40 | bool create); | |
5bc17018 | 41 | void tcf_chain_put(struct tcf_chain *chain); |
f36fe1c4 | 42 | void tcf_block_netif_keep_dst(struct tcf_block *block); |
6529eaba | 43 | int tcf_block_get(struct tcf_block **p_block, |
8d1a77f9 AA |
44 | struct tcf_proto __rcu **p_filter_chain, struct Qdisc *q, |
45 | struct netlink_ext_ack *extack); | |
c7eb7d72 | 46 | int tcf_block_get_ext(struct tcf_block **p_block, struct Qdisc *q, |
8d1a77f9 AA |
47 | struct tcf_block_ext_info *ei, |
48 | struct netlink_ext_ack *extack); | |
6529eaba | 49 | void tcf_block_put(struct tcf_block *block); |
c7eb7d72 | 50 | void tcf_block_put_ext(struct tcf_block *block, struct Qdisc *q, |
8c4083b3 | 51 | struct tcf_block_ext_info *ei); |
44186460 | 52 | |
48617387 JP |
53 | static inline bool tcf_block_shared(struct tcf_block *block) |
54 | { | |
55 | return block->index; | |
56 | } | |
57 | ||
44186460 JP |
58 | static inline struct Qdisc *tcf_block_q(struct tcf_block *block) |
59 | { | |
48617387 | 60 | WARN_ON(tcf_block_shared(block)); |
44186460 JP |
61 | return block->q; |
62 | } | |
63 | ||
64 | static inline struct net_device *tcf_block_dev(struct tcf_block *block) | |
65 | { | |
66 | return tcf_block_q(block)->dev_queue->dev; | |
67 | } | |
68 | ||
acb67442 JP |
69 | void *tcf_block_cb_priv(struct tcf_block_cb *block_cb); |
70 | struct tcf_block_cb *tcf_block_cb_lookup(struct tcf_block *block, | |
71 | tc_setup_cb_t *cb, void *cb_ident); | |
72 | void tcf_block_cb_incref(struct tcf_block_cb *block_cb); | |
73 | unsigned int tcf_block_cb_decref(struct tcf_block_cb *block_cb); | |
74 | struct tcf_block_cb *__tcf_block_cb_register(struct tcf_block *block, | |
75 | tc_setup_cb_t *cb, void *cb_ident, | |
76 | void *cb_priv); | |
77 | int tcf_block_cb_register(struct tcf_block *block, | |
78 | tc_setup_cb_t *cb, void *cb_ident, | |
79 | void *cb_priv); | |
80 | void __tcf_block_cb_unregister(struct tcf_block_cb *block_cb); | |
81 | void tcf_block_cb_unregister(struct tcf_block *block, | |
82 | tc_setup_cb_t *cb, void *cb_ident); | |
83 | ||
87d83093 JP |
84 | int tcf_classify(struct sk_buff *skb, const struct tcf_proto *tp, |
85 | struct tcf_result *res, bool compat_mode); | |
86 | ||
8ae70032 | 87 | #else |
6529eaba JP |
88 | static inline |
89 | int tcf_block_get(struct tcf_block **p_block, | |
3c149091 SM |
90 | struct tcf_proto __rcu **p_filter_chain, struct Qdisc *q, |
91 | struct netlink_ext_ack *extack) | |
6529eaba JP |
92 | { |
93 | return 0; | |
94 | } | |
95 | ||
8c4083b3 | 96 | static inline |
c7eb7d72 | 97 | int tcf_block_get_ext(struct tcf_block **p_block, struct Qdisc *q, |
33c30a8b QM |
98 | struct tcf_block_ext_info *ei, |
99 | struct netlink_ext_ack *extack) | |
8c4083b3 JP |
100 | { |
101 | return 0; | |
102 | } | |
103 | ||
6529eaba | 104 | static inline void tcf_block_put(struct tcf_block *block) |
8ae70032 JP |
105 | { |
106 | } | |
87d83093 | 107 | |
8c4083b3 | 108 | static inline |
c7eb7d72 | 109 | void tcf_block_put_ext(struct tcf_block *block, struct Qdisc *q, |
8c4083b3 JP |
110 | struct tcf_block_ext_info *ei) |
111 | { | |
112 | } | |
113 | ||
44186460 JP |
114 | static inline struct Qdisc *tcf_block_q(struct tcf_block *block) |
115 | { | |
116 | return NULL; | |
117 | } | |
118 | ||
119 | static inline struct net_device *tcf_block_dev(struct tcf_block *block) | |
120 | { | |
121 | return NULL; | |
122 | } | |
123 | ||
acb67442 JP |
124 | static inline |
125 | int tc_setup_cb_block_register(struct tcf_block *block, tc_setup_cb_t *cb, | |
126 | void *cb_priv) | |
127 | { | |
128 | return 0; | |
129 | } | |
130 | ||
131 | static inline | |
132 | void tc_setup_cb_block_unregister(struct tcf_block *block, tc_setup_cb_t *cb, | |
133 | void *cb_priv) | |
134 | { | |
135 | } | |
136 | ||
137 | static inline | |
138 | void *tcf_block_cb_priv(struct tcf_block_cb *block_cb) | |
139 | { | |
140 | return NULL; | |
141 | } | |
142 | ||
143 | static inline | |
144 | struct tcf_block_cb *tcf_block_cb_lookup(struct tcf_block *block, | |
145 | tc_setup_cb_t *cb, void *cb_ident) | |
146 | { | |
147 | return NULL; | |
148 | } | |
149 | ||
150 | static inline | |
151 | void tcf_block_cb_incref(struct tcf_block_cb *block_cb) | |
152 | { | |
153 | } | |
154 | ||
155 | static inline | |
156 | unsigned int tcf_block_cb_decref(struct tcf_block_cb *block_cb) | |
157 | { | |
158 | return 0; | |
159 | } | |
160 | ||
161 | static inline | |
162 | struct tcf_block_cb *__tcf_block_cb_register(struct tcf_block *block, | |
163 | tc_setup_cb_t *cb, void *cb_ident, | |
164 | void *cb_priv) | |
165 | { | |
166 | return NULL; | |
167 | } | |
168 | ||
169 | static inline | |
170 | int tcf_block_cb_register(struct tcf_block *block, | |
171 | tc_setup_cb_t *cb, void *cb_ident, | |
172 | void *cb_priv) | |
173 | { | |
174 | return 0; | |
175 | } | |
176 | ||
177 | static inline | |
178 | void __tcf_block_cb_unregister(struct tcf_block_cb *block_cb) | |
179 | { | |
180 | } | |
181 | ||
182 | static inline | |
183 | void tcf_block_cb_unregister(struct tcf_block *block, | |
184 | tc_setup_cb_t *cb, void *cb_ident) | |
185 | { | |
186 | } | |
187 | ||
87d83093 JP |
188 | static inline int tcf_classify(struct sk_buff *skb, const struct tcf_proto *tp, |
189 | struct tcf_result *res, bool compat_mode) | |
190 | { | |
191 | return TC_ACT_UNSPEC; | |
192 | } | |
8ae70032 | 193 | #endif |
cf1facda | 194 | |
1da177e4 LT |
195 | static inline unsigned long |
196 | __cls_set_class(unsigned long *clp, unsigned long cl) | |
197 | { | |
a0efb80c | 198 | return xchg(clp, cl); |
1da177e4 LT |
199 | } |
200 | ||
201 | static inline unsigned long | |
34e3759c | 202 | cls_set_class(struct Qdisc *q, unsigned long *clp, unsigned long cl) |
1da177e4 LT |
203 | { |
204 | unsigned long old_cl; | |
34e3759c JP |
205 | |
206 | sch_tree_lock(q); | |
1da177e4 | 207 | old_cl = __cls_set_class(clp, cl); |
34e3759c | 208 | sch_tree_unlock(q); |
1da177e4 LT |
209 | return old_cl; |
210 | } | |
211 | ||
212 | static inline void | |
213 | tcf_bind_filter(struct tcf_proto *tp, struct tcf_result *r, unsigned long base) | |
214 | { | |
34e3759c | 215 | struct Qdisc *q = tp->chain->block->q; |
1da177e4 LT |
216 | unsigned long cl; |
217 | ||
34e3759c JP |
218 | /* Check q as it is not set for shared blocks. In that case, |
219 | * setting class is not supported. | |
220 | */ | |
221 | if (!q) | |
222 | return; | |
223 | cl = q->ops->cl_ops->bind_tcf(q, base, r->classid); | |
224 | cl = cls_set_class(q, &r->class, cl); | |
1da177e4 | 225 | if (cl) |
34e3759c | 226 | q->ops->cl_ops->unbind_tcf(q, cl); |
1da177e4 LT |
227 | } |
228 | ||
229 | static inline void | |
230 | tcf_unbind_filter(struct tcf_proto *tp, struct tcf_result *r) | |
231 | { | |
34e3759c | 232 | struct Qdisc *q = tp->chain->block->q; |
1da177e4 LT |
233 | unsigned long cl; |
234 | ||
34e3759c JP |
235 | if (!q) |
236 | return; | |
1da177e4 | 237 | if ((cl = __cls_set_class(&r->class, 0)) != 0) |
34e3759c | 238 | q->ops->cl_ops->unbind_tcf(q, cl); |
1da177e4 LT |
239 | } |
240 | ||
fd2c3ef7 | 241 | struct tcf_exts { |
1da177e4 | 242 | #ifdef CONFIG_NET_CLS_ACT |
33be6271 | 243 | __u32 type; /* for backward compat(TCA_OLD_COMPAT) */ |
22dc13c8 WC |
244 | int nr_actions; |
245 | struct tc_action **actions; | |
e4b95c41 | 246 | struct net *net; |
1da177e4 | 247 | #endif |
5da57f42 WC |
248 | /* Map to export classifier specific extension TLV types to the |
249 | * generic extensions API. Unsupported extensions must be set to 0. | |
250 | */ | |
1da177e4 LT |
251 | int action; |
252 | int police; | |
253 | }; | |
254 | ||
b9a24bb7 | 255 | static inline int tcf_exts_init(struct tcf_exts *exts, int action, int police) |
33be6271 WC |
256 | { |
257 | #ifdef CONFIG_NET_CLS_ACT | |
5da57f42 | 258 | exts->type = 0; |
22dc13c8 | 259 | exts->nr_actions = 0; |
e4b95c41 | 260 | exts->net = NULL; |
22dc13c8 WC |
261 | exts->actions = kcalloc(TCA_ACT_MAX_PRIO, sizeof(struct tc_action *), |
262 | GFP_KERNEL); | |
b9a24bb7 WC |
263 | if (!exts->actions) |
264 | return -ENOMEM; | |
33be6271 | 265 | #endif |
5da57f42 WC |
266 | exts->action = action; |
267 | exts->police = police; | |
b9a24bb7 | 268 | return 0; |
33be6271 WC |
269 | } |
270 | ||
e4b95c41 CW |
271 | /* Return false if the netns is being destroyed in cleanup_net(). Callers |
272 | * need to do cleanup synchronously in this case, otherwise may race with | |
273 | * tc_action_net_exit(). Return true for other cases. | |
274 | */ | |
275 | static inline bool tcf_exts_get_net(struct tcf_exts *exts) | |
276 | { | |
277 | #ifdef CONFIG_NET_CLS_ACT | |
278 | exts->net = maybe_get_net(exts->net); | |
279 | return exts->net != NULL; | |
280 | #else | |
281 | return true; | |
282 | #endif | |
283 | } | |
284 | ||
285 | static inline void tcf_exts_put_net(struct tcf_exts *exts) | |
286 | { | |
287 | #ifdef CONFIG_NET_CLS_ACT | |
288 | if (exts->net) | |
289 | put_net(exts->net); | |
290 | #endif | |
291 | } | |
292 | ||
22dc13c8 WC |
293 | static inline void tcf_exts_to_list(const struct tcf_exts *exts, |
294 | struct list_head *actions) | |
295 | { | |
296 | #ifdef CONFIG_NET_CLS_ACT | |
297 | int i; | |
298 | ||
299 | for (i = 0; i < exts->nr_actions; i++) { | |
300 | struct tc_action *a = exts->actions[i]; | |
301 | ||
fa5effe7 | 302 | list_add_tail(&a->list, actions); |
22dc13c8 WC |
303 | } |
304 | #endif | |
305 | } | |
306 | ||
d897a638 JK |
307 | static inline void |
308 | tcf_exts_stats_update(const struct tcf_exts *exts, | |
309 | u64 bytes, u64 packets, u64 lastuse) | |
310 | { | |
311 | #ifdef CONFIG_NET_CLS_ACT | |
312 | int i; | |
313 | ||
314 | preempt_disable(); | |
315 | ||
316 | for (i = 0; i < exts->nr_actions; i++) { | |
317 | struct tc_action *a = exts->actions[i]; | |
318 | ||
319 | tcf_action_stats_update(a, bytes, packets, lastuse); | |
320 | } | |
321 | ||
322 | preempt_enable(); | |
323 | #endif | |
324 | } | |
325 | ||
3bcc0cec JP |
326 | /** |
327 | * tcf_exts_has_actions - check if at least one action is present | |
328 | * @exts: tc filter extensions handle | |
329 | * | |
330 | * Returns true if at least one action is present. | |
331 | */ | |
332 | static inline bool tcf_exts_has_actions(struct tcf_exts *exts) | |
333 | { | |
2734437e | 334 | #ifdef CONFIG_NET_CLS_ACT |
3bcc0cec JP |
335 | return exts->nr_actions; |
336 | #else | |
337 | return false; | |
338 | #endif | |
339 | } | |
2734437e | 340 | |
3bcc0cec JP |
341 | /** |
342 | * tcf_exts_has_one_action - check if exactly one action is present | |
343 | * @exts: tc filter extensions handle | |
344 | * | |
345 | * Returns true if exactly one action is present. | |
346 | */ | |
347 | static inline bool tcf_exts_has_one_action(struct tcf_exts *exts) | |
348 | { | |
349 | #ifdef CONFIG_NET_CLS_ACT | |
350 | return exts->nr_actions == 1; | |
351 | #else | |
352 | return false; | |
353 | #endif | |
354 | } | |
2734437e | 355 | |
af69afc5 JP |
356 | /** |
357 | * tcf_exts_exec - execute tc filter extensions | |
358 | * @skb: socket buffer | |
359 | * @exts: tc filter extensions handle | |
360 | * @res: desired result | |
361 | * | |
af089e70 | 362 | * Executes all configured extensions. Returns TC_ACT_OK on a normal execution, |
af69afc5 JP |
363 | * a negative number if the filter must be considered unmatched or |
364 | * a positive action code (TC_ACT_*) which must be returned to the | |
365 | * underlying layer. | |
366 | */ | |
367 | static inline int | |
368 | tcf_exts_exec(struct sk_buff *skb, struct tcf_exts *exts, | |
369 | struct tcf_result *res) | |
370 | { | |
371 | #ifdef CONFIG_NET_CLS_ACT | |
ec1a9cca | 372 | return tcf_action_exec(skb, exts->actions, exts->nr_actions, res); |
af69afc5 | 373 | #endif |
af089e70 | 374 | return TC_ACT_OK; |
af69afc5 JP |
375 | } |
376 | ||
5c15257f JP |
377 | int tcf_exts_validate(struct net *net, struct tcf_proto *tp, |
378 | struct nlattr **tb, struct nlattr *rate_tlv, | |
50a56190 AA |
379 | struct tcf_exts *exts, bool ovr, |
380 | struct netlink_ext_ack *extack); | |
18d0264f | 381 | void tcf_exts_destroy(struct tcf_exts *exts); |
9b0d4446 | 382 | void tcf_exts_change(struct tcf_exts *dst, struct tcf_exts *src); |
5da57f42 WC |
383 | int tcf_exts_dump(struct sk_buff *skb, struct tcf_exts *exts); |
384 | int tcf_exts_dump_stats(struct sk_buff *skb, struct tcf_exts *exts); | |
1da177e4 LT |
385 | |
386 | /** | |
387 | * struct tcf_pkt_info - packet information | |
388 | */ | |
fd2c3ef7 | 389 | struct tcf_pkt_info { |
1da177e4 LT |
390 | unsigned char * ptr; |
391 | int nexthdr; | |
392 | }; | |
393 | ||
394 | #ifdef CONFIG_NET_EMATCH | |
395 | ||
396 | struct tcf_ematch_ops; | |
397 | ||
398 | /** | |
399 | * struct tcf_ematch - extended match (ematch) | |
400 | * | |
401 | * @matchid: identifier to allow userspace to reidentify a match | |
402 | * @flags: flags specifying attributes and the relation to other matches | |
403 | * @ops: the operations lookup table of the corresponding ematch module | |
404 | * @datalen: length of the ematch specific configuration data | |
405 | * @data: ematch specific data | |
406 | */ | |
fd2c3ef7 | 407 | struct tcf_ematch { |
1da177e4 LT |
408 | struct tcf_ematch_ops * ops; |
409 | unsigned long data; | |
410 | unsigned int datalen; | |
411 | u16 matchid; | |
412 | u16 flags; | |
82a470f1 | 413 | struct net *net; |
1da177e4 LT |
414 | }; |
415 | ||
416 | static inline int tcf_em_is_container(struct tcf_ematch *em) | |
417 | { | |
418 | return !em->ops; | |
419 | } | |
420 | ||
421 | static inline int tcf_em_is_simple(struct tcf_ematch *em) | |
422 | { | |
423 | return em->flags & TCF_EM_SIMPLE; | |
424 | } | |
425 | ||
426 | static inline int tcf_em_is_inverted(struct tcf_ematch *em) | |
427 | { | |
428 | return em->flags & TCF_EM_INVERT; | |
429 | } | |
430 | ||
431 | static inline int tcf_em_last_match(struct tcf_ematch *em) | |
432 | { | |
433 | return (em->flags & TCF_EM_REL_MASK) == TCF_EM_REL_END; | |
434 | } | |
435 | ||
436 | static inline int tcf_em_early_end(struct tcf_ematch *em, int result) | |
437 | { | |
438 | if (tcf_em_last_match(em)) | |
439 | return 1; | |
440 | ||
441 | if (result == 0 && em->flags & TCF_EM_REL_AND) | |
442 | return 1; | |
443 | ||
444 | if (result != 0 && em->flags & TCF_EM_REL_OR) | |
445 | return 1; | |
446 | ||
447 | return 0; | |
448 | } | |
449 | ||
450 | /** | |
451 | * struct tcf_ematch_tree - ematch tree handle | |
452 | * | |
453 | * @hdr: ematch tree header supplied by userspace | |
454 | * @matches: array of ematches | |
455 | */ | |
fd2c3ef7 | 456 | struct tcf_ematch_tree { |
1da177e4 LT |
457 | struct tcf_ematch_tree_hdr hdr; |
458 | struct tcf_ematch * matches; | |
459 | ||
460 | }; | |
461 | ||
462 | /** | |
463 | * struct tcf_ematch_ops - ematch module operations | |
464 | * | |
465 | * @kind: identifier (kind) of this ematch module | |
466 | * @datalen: length of expected configuration data (optional) | |
467 | * @change: called during validation (optional) | |
468 | * @match: called during ematch tree evaluation, must return 1/0 | |
469 | * @destroy: called during destroyage (optional) | |
470 | * @dump: called during dumping process (optional) | |
471 | * @owner: owner, must be set to THIS_MODULE | |
472 | * @link: link to previous/next ematch module (internal use) | |
473 | */ | |
fd2c3ef7 | 474 | struct tcf_ematch_ops { |
1da177e4 LT |
475 | int kind; |
476 | int datalen; | |
82a470f1 | 477 | int (*change)(struct net *net, void *, |
1da177e4 LT |
478 | int, struct tcf_ematch *); |
479 | int (*match)(struct sk_buff *, struct tcf_ematch *, | |
480 | struct tcf_pkt_info *); | |
82a470f1 | 481 | void (*destroy)(struct tcf_ematch *); |
1da177e4 LT |
482 | int (*dump)(struct sk_buff *, struct tcf_ematch *); |
483 | struct module *owner; | |
484 | struct list_head link; | |
485 | }; | |
486 | ||
5c15257f JP |
487 | int tcf_em_register(struct tcf_ematch_ops *); |
488 | void tcf_em_unregister(struct tcf_ematch_ops *); | |
489 | int tcf_em_tree_validate(struct tcf_proto *, struct nlattr *, | |
490 | struct tcf_ematch_tree *); | |
82a470f1 | 491 | void tcf_em_tree_destroy(struct tcf_ematch_tree *); |
5c15257f JP |
492 | int tcf_em_tree_dump(struct sk_buff *, struct tcf_ematch_tree *, int); |
493 | int __tcf_em_tree_match(struct sk_buff *, struct tcf_ematch_tree *, | |
494 | struct tcf_pkt_info *); | |
1da177e4 | 495 | |
1da177e4 LT |
496 | /** |
497 | * tcf_em_tree_match - evaulate an ematch tree | |
498 | * | |
499 | * @skb: socket buffer of the packet in question | |
500 | * @tree: ematch tree to be used for evaluation | |
501 | * @info: packet information examined by classifier | |
502 | * | |
503 | * This function matches @skb against the ematch tree in @tree by going | |
504 | * through all ematches respecting their logic relations returning | |
505 | * as soon as the result is obvious. | |
506 | * | |
507 | * Returns 1 if the ematch tree as-one matches, no ematches are configured | |
508 | * or ematch is not enabled in the kernel, otherwise 0 is returned. | |
509 | */ | |
510 | static inline int tcf_em_tree_match(struct sk_buff *skb, | |
511 | struct tcf_ematch_tree *tree, | |
512 | struct tcf_pkt_info *info) | |
513 | { | |
514 | if (tree->hdr.nmatches) | |
515 | return __tcf_em_tree_match(skb, tree, info); | |
516 | else | |
517 | return 1; | |
518 | } | |
519 | ||
db3d99c0 PM |
520 | #define MODULE_ALIAS_TCF_EMATCH(kind) MODULE_ALIAS("ematch-kind-" __stringify(kind)) |
521 | ||
1da177e4 LT |
522 | #else /* CONFIG_NET_EMATCH */ |
523 | ||
fd2c3ef7 | 524 | struct tcf_ematch_tree { |
1da177e4 LT |
525 | }; |
526 | ||
527 | #define tcf_em_tree_validate(tp, tb, t) ((void)(t), 0) | |
82a470f1 | 528 | #define tcf_em_tree_destroy(t) do { (void)(t); } while(0) |
1da177e4 | 529 | #define tcf_em_tree_dump(skb, t, tlv) (0) |
1da177e4 LT |
530 | #define tcf_em_tree_match(skb, t, info) ((void)(info), 1) |
531 | ||
532 | #endif /* CONFIG_NET_EMATCH */ | |
533 | ||
534 | static inline unsigned char * tcf_get_base_ptr(struct sk_buff *skb, int layer) | |
535 | { | |
536 | switch (layer) { | |
537 | case TCF_LAYER_LINK: | |
538 | return skb->data; | |
539 | case TCF_LAYER_NETWORK: | |
d56f90a7 | 540 | return skb_network_header(skb); |
1da177e4 | 541 | case TCF_LAYER_TRANSPORT: |
9c70220b | 542 | return skb_transport_header(skb); |
1da177e4 LT |
543 | } |
544 | ||
545 | return NULL; | |
546 | } | |
547 | ||
eddc9ec5 ACM |
548 | static inline int tcf_valid_offset(const struct sk_buff *skb, |
549 | const unsigned char *ptr, const int len) | |
1da177e4 | 550 | { |
da521b2c DM |
551 | return likely((ptr + len) <= skb_tail_pointer(skb) && |
552 | ptr >= skb->head && | |
553 | (ptr <= (ptr + len))); | |
1da177e4 LT |
554 | } |
555 | ||
556 | #ifdef CONFIG_NET_CLS_IND | |
0eeb8ffc DL |
557 | #include <net/net_namespace.h> |
558 | ||
1da177e4 | 559 | static inline int |
1057c55f AA |
560 | tcf_change_indev(struct net *net, struct nlattr *indev_tlv, |
561 | struct netlink_ext_ack *extack) | |
1da177e4 | 562 | { |
2519a602 WC |
563 | char indev[IFNAMSIZ]; |
564 | struct net_device *dev; | |
565 | ||
1057c55f AA |
566 | if (nla_strlcpy(indev, indev_tlv, IFNAMSIZ) >= IFNAMSIZ) { |
567 | NL_SET_ERR_MSG(extack, "Interface name too long"); | |
1da177e4 | 568 | return -EINVAL; |
1057c55f | 569 | } |
2519a602 WC |
570 | dev = __dev_get_by_name(net, indev); |
571 | if (!dev) | |
572 | return -ENODEV; | |
573 | return dev->ifindex; | |
1da177e4 LT |
574 | } |
575 | ||
2519a602 WC |
576 | static inline bool |
577 | tcf_match_indev(struct sk_buff *skb, int ifindex) | |
1da177e4 | 578 | { |
2519a602 WC |
579 | if (!ifindex) |
580 | return true; | |
581 | if (!skb->skb_iif) | |
582 | return false; | |
583 | return ifindex == skb->skb_iif; | |
1da177e4 LT |
584 | } |
585 | #endif /* CONFIG_NET_CLS_IND */ | |
586 | ||
208c0f4b JP |
587 | int tc_setup_cb_call(struct tcf_block *block, struct tcf_exts *exts, |
588 | enum tc_setup_type type, void *type_data, bool err_stop); | |
717503b9 | 589 | |
8c4083b3 JP |
590 | enum tc_block_command { |
591 | TC_BLOCK_BIND, | |
592 | TC_BLOCK_UNBIND, | |
593 | }; | |
594 | ||
595 | struct tc_block_offload { | |
596 | enum tc_block_command command; | |
597 | enum tcf_block_binder_type binder_type; | |
598 | struct tcf_block *block; | |
599 | }; | |
600 | ||
5fd9fc4e | 601 | struct tc_cls_common_offload { |
5fd9fc4e JP |
602 | u32 chain_index; |
603 | __be16 protocol; | |
d7c1c8d2 | 604 | u32 prio; |
5fd9fc4e JP |
605 | }; |
606 | ||
607 | static inline void | |
608 | tc_cls_common_offload_init(struct tc_cls_common_offload *cls_common, | |
609 | const struct tcf_proto *tp) | |
610 | { | |
5fd9fc4e JP |
611 | cls_common->chain_index = tp->chain->index; |
612 | cls_common->protocol = tp->protocol; | |
d7c1c8d2 | 613 | cls_common->prio = tp->prio; |
5fd9fc4e JP |
614 | } |
615 | ||
a1b7c5fd JF |
616 | struct tc_cls_u32_knode { |
617 | struct tcf_exts *exts; | |
e014860e | 618 | struct tc_u32_sel *sel; |
a1b7c5fd JF |
619 | u32 handle; |
620 | u32 val; | |
621 | u32 mask; | |
622 | u32 link_handle; | |
e014860e | 623 | u8 fshift; |
a1b7c5fd JF |
624 | }; |
625 | ||
626 | struct tc_cls_u32_hnode { | |
627 | u32 handle; | |
628 | u32 prio; | |
629 | unsigned int divisor; | |
630 | }; | |
631 | ||
632 | enum tc_clsu32_command { | |
633 | TC_CLSU32_NEW_KNODE, | |
634 | TC_CLSU32_REPLACE_KNODE, | |
635 | TC_CLSU32_DELETE_KNODE, | |
636 | TC_CLSU32_NEW_HNODE, | |
637 | TC_CLSU32_REPLACE_HNODE, | |
638 | TC_CLSU32_DELETE_HNODE, | |
639 | }; | |
640 | ||
641 | struct tc_cls_u32_offload { | |
5fd9fc4e | 642 | struct tc_cls_common_offload common; |
a1b7c5fd JF |
643 | /* knode values */ |
644 | enum tc_clsu32_command command; | |
645 | union { | |
646 | struct tc_cls_u32_knode knode; | |
647 | struct tc_cls_u32_hnode hnode; | |
648 | }; | |
649 | }; | |
650 | ||
7b06e8ae | 651 | static inline bool tc_can_offload(const struct net_device *dev) |
6843e7a2 | 652 | { |
70b5aee4 | 653 | return dev->features & NETIF_F_HW_TC; |
6843e7a2 JF |
654 | } |
655 | ||
55330f05 HHZ |
656 | static inline bool tc_skip_hw(u32 flags) |
657 | { | |
658 | return (flags & TCA_CLS_FLAGS_SKIP_HW) ? true : false; | |
659 | } | |
660 | ||
d34e3e18 SS |
661 | static inline bool tc_skip_sw(u32 flags) |
662 | { | |
663 | return (flags & TCA_CLS_FLAGS_SKIP_SW) ? true : false; | |
664 | } | |
665 | ||
666 | /* SKIP_HW and SKIP_SW are mutually exclusive flags. */ | |
667 | static inline bool tc_flags_valid(u32 flags) | |
668 | { | |
669 | if (flags & ~(TCA_CLS_FLAGS_SKIP_HW | TCA_CLS_FLAGS_SKIP_SW)) | |
670 | return false; | |
671 | ||
672 | if (!(flags ^ (TCA_CLS_FLAGS_SKIP_HW | TCA_CLS_FLAGS_SKIP_SW))) | |
673 | return false; | |
674 | ||
675 | return true; | |
676 | } | |
677 | ||
e696028a OG |
678 | static inline bool tc_in_hw(u32 flags) |
679 | { | |
680 | return (flags & TCA_CLS_FLAGS_IN_HW) ? true : false; | |
681 | } | |
682 | ||
5b33f488 AV |
683 | enum tc_fl_command { |
684 | TC_CLSFLOWER_REPLACE, | |
685 | TC_CLSFLOWER_DESTROY, | |
10cbc684 | 686 | TC_CLSFLOWER_STATS, |
5b33f488 AV |
687 | }; |
688 | ||
689 | struct tc_cls_flower_offload { | |
5fd9fc4e | 690 | struct tc_cls_common_offload common; |
5b33f488 | 691 | enum tc_fl_command command; |
8208d21b | 692 | unsigned long cookie; |
5b33f488 AV |
693 | struct flow_dissector *dissector; |
694 | struct fl_flow_key *mask; | |
695 | struct fl_flow_key *key; | |
696 | struct tcf_exts *exts; | |
384c181e | 697 | u32 classid; |
5b33f488 AV |
698 | }; |
699 | ||
b87f7936 YG |
700 | enum tc_matchall_command { |
701 | TC_CLSMATCHALL_REPLACE, | |
702 | TC_CLSMATCHALL_DESTROY, | |
703 | }; | |
704 | ||
705 | struct tc_cls_matchall_offload { | |
5fd9fc4e | 706 | struct tc_cls_common_offload common; |
b87f7936 YG |
707 | enum tc_matchall_command command; |
708 | struct tcf_exts *exts; | |
709 | unsigned long cookie; | |
710 | }; | |
711 | ||
332ae8e2 | 712 | enum tc_clsbpf_command { |
102740bd | 713 | TC_CLSBPF_OFFLOAD, |
68d64063 | 714 | TC_CLSBPF_STATS, |
332ae8e2 JK |
715 | }; |
716 | ||
717 | struct tc_cls_bpf_offload { | |
5fd9fc4e | 718 | struct tc_cls_common_offload common; |
332ae8e2 JK |
719 | enum tc_clsbpf_command command; |
720 | struct tcf_exts *exts; | |
721 | struct bpf_prog *prog; | |
102740bd | 722 | struct bpf_prog *oldprog; |
332ae8e2 JK |
723 | const char *name; |
724 | bool exts_integrated; | |
0d01d45f | 725 | u32 gen_flags; |
332ae8e2 JK |
726 | }; |
727 | ||
4e8b86c0 AN |
728 | struct tc_mqprio_qopt_offload { |
729 | /* struct tc_mqprio_qopt must always be the first element */ | |
730 | struct tc_mqprio_qopt qopt; | |
731 | u16 mode; | |
732 | u16 shaper; | |
733 | u32 flags; | |
734 | u64 min_rate[TC_QOPT_MAX_QUEUE]; | |
735 | u64 max_rate[TC_QOPT_MAX_QUEUE]; | |
736 | }; | |
1045ba77 JHS |
737 | |
738 | /* This structure holds cookie structure that is passed from user | |
739 | * to the kernel for actions and classifiers | |
740 | */ | |
741 | struct tc_cookie { | |
742 | u8 *data; | |
743 | u32 len; | |
744 | }; | |
602f3baf | 745 | |
f34b4aac NF |
746 | struct tc_qopt_offload_stats { |
747 | struct gnet_stats_basic_packed *bstats; | |
748 | struct gnet_stats_queue *qstats; | |
749 | }; | |
750 | ||
602f3baf NF |
751 | enum tc_red_command { |
752 | TC_RED_REPLACE, | |
753 | TC_RED_DESTROY, | |
754 | TC_RED_STATS, | |
755 | TC_RED_XSTATS, | |
756 | }; | |
757 | ||
758 | struct tc_red_qopt_offload_params { | |
759 | u32 min; | |
760 | u32 max; | |
761 | u32 probability; | |
762 | bool is_ecn; | |
416ef9b1 | 763 | struct gnet_stats_queue *qstats; |
602f3baf | 764 | }; |
602f3baf NF |
765 | |
766 | struct tc_red_qopt_offload { | |
767 | enum tc_red_command command; | |
768 | u32 handle; | |
769 | u32 parent; | |
770 | union { | |
771 | struct tc_red_qopt_offload_params set; | |
f34b4aac | 772 | struct tc_qopt_offload_stats stats; |
602f3baf NF |
773 | struct red_stats *xstats; |
774 | }; | |
775 | }; | |
776 | ||
7fdb61b4 NF |
777 | enum tc_prio_command { |
778 | TC_PRIO_REPLACE, | |
779 | TC_PRIO_DESTROY, | |
780 | TC_PRIO_STATS, | |
781 | }; | |
782 | ||
783 | struct tc_prio_qopt_offload_params { | |
784 | int bands; | |
785 | u8 priomap[TC_PRIO_MAX + 1]; | |
786 | /* In case that a prio qdisc is offloaded and now is changed to a | |
787 | * non-offloadedable config, it needs to update the backlog & qlen | |
788 | * values to negate the HW backlog & qlen values (and only them). | |
789 | */ | |
790 | struct gnet_stats_queue *qstats; | |
791 | }; | |
792 | ||
793 | struct tc_prio_qopt_offload { | |
794 | enum tc_prio_command command; | |
795 | u32 handle; | |
796 | u32 parent; | |
797 | union { | |
798 | struct tc_prio_qopt_offload_params replace_params; | |
799 | struct tc_qopt_offload_stats stats; | |
800 | }; | |
801 | }; | |
1da177e4 | 802 | #endif |