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 | ||
cd11b164 PA |
10 | /* TC action not accessible from user space */ |
11 | #define TC_ACT_REINSERT (TC_ACT_VALUE_MAX + 1) | |
12 | ||
1da177e4 LT |
13 | /* Basic packet classifier frontend definitions. */ |
14 | ||
fd2c3ef7 | 15 | struct tcf_walker { |
1da177e4 LT |
16 | int stop; |
17 | int skip; | |
18 | int count; | |
01683a14 | 19 | unsigned long cookie; |
8113c095 | 20 | int (*fn)(struct tcf_proto *, void *node, struct tcf_walker *); |
1da177e4 LT |
21 | }; |
22 | ||
5c15257f JP |
23 | int register_tcf_proto_ops(struct tcf_proto_ops *ops); |
24 | int unregister_tcf_proto_ops(struct tcf_proto_ops *ops); | |
1da177e4 | 25 | |
8c4083b3 JP |
26 | enum tcf_block_binder_type { |
27 | TCF_BLOCK_BINDER_TYPE_UNSPEC, | |
6e40cf2d JP |
28 | TCF_BLOCK_BINDER_TYPE_CLSACT_INGRESS, |
29 | TCF_BLOCK_BINDER_TYPE_CLSACT_EGRESS, | |
8c4083b3 JP |
30 | }; |
31 | ||
32 | struct tcf_block_ext_info { | |
33 | enum tcf_block_binder_type binder_type; | |
c7eb7d72 JP |
34 | tcf_chain_head_change_t *chain_head_change; |
35 | void *chain_head_change_priv; | |
48617387 | 36 | u32 block_index; |
8c4083b3 JP |
37 | }; |
38 | ||
acb67442 | 39 | struct tcf_block_cb; |
aaa908ff | 40 | bool tcf_queue_work(struct rcu_work *rwork, work_func_t func); |
acb67442 | 41 | |
8ae70032 | 42 | #ifdef CONFIG_NET_CLS |
1f3ed383 JP |
43 | struct tcf_chain *tcf_chain_get_by_act(struct tcf_block *block, |
44 | u32 chain_index); | |
1f3ed383 | 45 | void tcf_chain_put_by_act(struct tcf_chain *chain); |
f36fe1c4 | 46 | void tcf_block_netif_keep_dst(struct tcf_block *block); |
6529eaba | 47 | int tcf_block_get(struct tcf_block **p_block, |
8d1a77f9 AA |
48 | struct tcf_proto __rcu **p_filter_chain, struct Qdisc *q, |
49 | struct netlink_ext_ack *extack); | |
c7eb7d72 | 50 | int tcf_block_get_ext(struct tcf_block **p_block, struct Qdisc *q, |
8d1a77f9 AA |
51 | struct tcf_block_ext_info *ei, |
52 | struct netlink_ext_ack *extack); | |
6529eaba | 53 | void tcf_block_put(struct tcf_block *block); |
c7eb7d72 | 54 | void tcf_block_put_ext(struct tcf_block *block, struct Qdisc *q, |
8c4083b3 | 55 | struct tcf_block_ext_info *ei); |
44186460 | 56 | |
48617387 JP |
57 | static inline bool tcf_block_shared(struct tcf_block *block) |
58 | { | |
59 | return block->index; | |
60 | } | |
61 | ||
44186460 JP |
62 | static inline struct Qdisc *tcf_block_q(struct tcf_block *block) |
63 | { | |
48617387 | 64 | WARN_ON(tcf_block_shared(block)); |
44186460 JP |
65 | return block->q; |
66 | } | |
67 | ||
68 | static inline struct net_device *tcf_block_dev(struct tcf_block *block) | |
69 | { | |
70 | return tcf_block_q(block)->dev_queue->dev; | |
71 | } | |
72 | ||
acb67442 JP |
73 | void *tcf_block_cb_priv(struct tcf_block_cb *block_cb); |
74 | struct tcf_block_cb *tcf_block_cb_lookup(struct tcf_block *block, | |
75 | tc_setup_cb_t *cb, void *cb_ident); | |
76 | void tcf_block_cb_incref(struct tcf_block_cb *block_cb); | |
77 | unsigned int tcf_block_cb_decref(struct tcf_block_cb *block_cb); | |
78 | struct tcf_block_cb *__tcf_block_cb_register(struct tcf_block *block, | |
79 | tc_setup_cb_t *cb, void *cb_ident, | |
60513bd8 JH |
80 | void *cb_priv, |
81 | struct netlink_ext_ack *extack); | |
acb67442 JP |
82 | int tcf_block_cb_register(struct tcf_block *block, |
83 | tc_setup_cb_t *cb, void *cb_ident, | |
60513bd8 | 84 | void *cb_priv, struct netlink_ext_ack *extack); |
32636742 JH |
85 | void __tcf_block_cb_unregister(struct tcf_block *block, |
86 | struct tcf_block_cb *block_cb); | |
acb67442 JP |
87 | void tcf_block_cb_unregister(struct tcf_block *block, |
88 | tc_setup_cb_t *cb, void *cb_ident); | |
89 | ||
87d83093 JP |
90 | int tcf_classify(struct sk_buff *skb, const struct tcf_proto *tp, |
91 | struct tcf_result *res, bool compat_mode); | |
92 | ||
8ae70032 | 93 | #else |
6529eaba JP |
94 | static inline |
95 | int tcf_block_get(struct tcf_block **p_block, | |
3c149091 SM |
96 | struct tcf_proto __rcu **p_filter_chain, struct Qdisc *q, |
97 | struct netlink_ext_ack *extack) | |
6529eaba JP |
98 | { |
99 | return 0; | |
100 | } | |
101 | ||
8c4083b3 | 102 | static inline |
c7eb7d72 | 103 | int tcf_block_get_ext(struct tcf_block **p_block, struct Qdisc *q, |
33c30a8b QM |
104 | struct tcf_block_ext_info *ei, |
105 | struct netlink_ext_ack *extack) | |
8c4083b3 JP |
106 | { |
107 | return 0; | |
108 | } | |
109 | ||
6529eaba | 110 | static inline void tcf_block_put(struct tcf_block *block) |
8ae70032 JP |
111 | { |
112 | } | |
87d83093 | 113 | |
8c4083b3 | 114 | static inline |
c7eb7d72 | 115 | void tcf_block_put_ext(struct tcf_block *block, struct Qdisc *q, |
8c4083b3 JP |
116 | struct tcf_block_ext_info *ei) |
117 | { | |
118 | } | |
119 | ||
44186460 JP |
120 | static inline struct Qdisc *tcf_block_q(struct tcf_block *block) |
121 | { | |
122 | return NULL; | |
123 | } | |
124 | ||
125 | static inline struct net_device *tcf_block_dev(struct tcf_block *block) | |
126 | { | |
127 | return NULL; | |
128 | } | |
129 | ||
acb67442 JP |
130 | static inline |
131 | int tc_setup_cb_block_register(struct tcf_block *block, tc_setup_cb_t *cb, | |
132 | void *cb_priv) | |
133 | { | |
134 | return 0; | |
135 | } | |
136 | ||
137 | static inline | |
138 | void tc_setup_cb_block_unregister(struct tcf_block *block, tc_setup_cb_t *cb, | |
139 | void *cb_priv) | |
140 | { | |
141 | } | |
142 | ||
143 | static inline | |
144 | void *tcf_block_cb_priv(struct tcf_block_cb *block_cb) | |
145 | { | |
146 | return NULL; | |
147 | } | |
148 | ||
149 | static inline | |
150 | struct tcf_block_cb *tcf_block_cb_lookup(struct tcf_block *block, | |
151 | tc_setup_cb_t *cb, void *cb_ident) | |
152 | { | |
153 | return NULL; | |
154 | } | |
155 | ||
156 | static inline | |
157 | void tcf_block_cb_incref(struct tcf_block_cb *block_cb) | |
158 | { | |
159 | } | |
160 | ||
161 | static inline | |
162 | unsigned int tcf_block_cb_decref(struct tcf_block_cb *block_cb) | |
163 | { | |
164 | return 0; | |
165 | } | |
166 | ||
167 | static inline | |
168 | struct tcf_block_cb *__tcf_block_cb_register(struct tcf_block *block, | |
169 | tc_setup_cb_t *cb, void *cb_ident, | |
60513bd8 JH |
170 | void *cb_priv, |
171 | struct netlink_ext_ack *extack) | |
acb67442 JP |
172 | { |
173 | return NULL; | |
174 | } | |
175 | ||
176 | static inline | |
177 | int tcf_block_cb_register(struct tcf_block *block, | |
178 | tc_setup_cb_t *cb, void *cb_ident, | |
60513bd8 | 179 | void *cb_priv, struct netlink_ext_ack *extack) |
acb67442 JP |
180 | { |
181 | return 0; | |
182 | } | |
183 | ||
184 | static inline | |
32636742 JH |
185 | void __tcf_block_cb_unregister(struct tcf_block *block, |
186 | struct tcf_block_cb *block_cb) | |
acb67442 JP |
187 | { |
188 | } | |
189 | ||
190 | static inline | |
191 | void tcf_block_cb_unregister(struct tcf_block *block, | |
192 | tc_setup_cb_t *cb, void *cb_ident) | |
193 | { | |
194 | } | |
195 | ||
87d83093 JP |
196 | static inline int tcf_classify(struct sk_buff *skb, const struct tcf_proto *tp, |
197 | struct tcf_result *res, bool compat_mode) | |
198 | { | |
199 | return TC_ACT_UNSPEC; | |
200 | } | |
8ae70032 | 201 | #endif |
cf1facda | 202 | |
1da177e4 LT |
203 | static inline unsigned long |
204 | __cls_set_class(unsigned long *clp, unsigned long cl) | |
205 | { | |
a0efb80c | 206 | return xchg(clp, cl); |
1da177e4 LT |
207 | } |
208 | ||
209 | static inline unsigned long | |
34e3759c | 210 | cls_set_class(struct Qdisc *q, unsigned long *clp, unsigned long cl) |
1da177e4 LT |
211 | { |
212 | unsigned long old_cl; | |
34e3759c JP |
213 | |
214 | sch_tree_lock(q); | |
1da177e4 | 215 | old_cl = __cls_set_class(clp, cl); |
34e3759c | 216 | sch_tree_unlock(q); |
1da177e4 LT |
217 | return old_cl; |
218 | } | |
219 | ||
220 | static inline void | |
221 | tcf_bind_filter(struct tcf_proto *tp, struct tcf_result *r, unsigned long base) | |
222 | { | |
34e3759c | 223 | struct Qdisc *q = tp->chain->block->q; |
1da177e4 LT |
224 | unsigned long cl; |
225 | ||
34e3759c JP |
226 | /* Check q as it is not set for shared blocks. In that case, |
227 | * setting class is not supported. | |
228 | */ | |
229 | if (!q) | |
230 | return; | |
231 | cl = q->ops->cl_ops->bind_tcf(q, base, r->classid); | |
232 | cl = cls_set_class(q, &r->class, cl); | |
1da177e4 | 233 | if (cl) |
34e3759c | 234 | q->ops->cl_ops->unbind_tcf(q, cl); |
1da177e4 LT |
235 | } |
236 | ||
237 | static inline void | |
238 | tcf_unbind_filter(struct tcf_proto *tp, struct tcf_result *r) | |
239 | { | |
34e3759c | 240 | struct Qdisc *q = tp->chain->block->q; |
1da177e4 LT |
241 | unsigned long cl; |
242 | ||
34e3759c JP |
243 | if (!q) |
244 | return; | |
1da177e4 | 245 | if ((cl = __cls_set_class(&r->class, 0)) != 0) |
34e3759c | 246 | q->ops->cl_ops->unbind_tcf(q, cl); |
1da177e4 LT |
247 | } |
248 | ||
fd2c3ef7 | 249 | struct tcf_exts { |
1da177e4 | 250 | #ifdef CONFIG_NET_CLS_ACT |
33be6271 | 251 | __u32 type; /* for backward compat(TCA_OLD_COMPAT) */ |
22dc13c8 WC |
252 | int nr_actions; |
253 | struct tc_action **actions; | |
e4b95c41 | 254 | struct net *net; |
1da177e4 | 255 | #endif |
5da57f42 WC |
256 | /* Map to export classifier specific extension TLV types to the |
257 | * generic extensions API. Unsupported extensions must be set to 0. | |
258 | */ | |
1da177e4 LT |
259 | int action; |
260 | int police; | |
261 | }; | |
262 | ||
b9a24bb7 | 263 | static inline int tcf_exts_init(struct tcf_exts *exts, int action, int police) |
33be6271 WC |
264 | { |
265 | #ifdef CONFIG_NET_CLS_ACT | |
5da57f42 | 266 | exts->type = 0; |
22dc13c8 | 267 | exts->nr_actions = 0; |
e4b95c41 | 268 | exts->net = NULL; |
22dc13c8 WC |
269 | exts->actions = kcalloc(TCA_ACT_MAX_PRIO, sizeof(struct tc_action *), |
270 | GFP_KERNEL); | |
b9a24bb7 WC |
271 | if (!exts->actions) |
272 | return -ENOMEM; | |
33be6271 | 273 | #endif |
5da57f42 WC |
274 | exts->action = action; |
275 | exts->police = police; | |
b9a24bb7 | 276 | return 0; |
33be6271 WC |
277 | } |
278 | ||
e4b95c41 CW |
279 | /* Return false if the netns is being destroyed in cleanup_net(). Callers |
280 | * need to do cleanup synchronously in this case, otherwise may race with | |
281 | * tc_action_net_exit(). Return true for other cases. | |
282 | */ | |
283 | static inline bool tcf_exts_get_net(struct tcf_exts *exts) | |
284 | { | |
285 | #ifdef CONFIG_NET_CLS_ACT | |
286 | exts->net = maybe_get_net(exts->net); | |
287 | return exts->net != NULL; | |
288 | #else | |
289 | return true; | |
290 | #endif | |
291 | } | |
292 | ||
293 | static inline void tcf_exts_put_net(struct tcf_exts *exts) | |
294 | { | |
295 | #ifdef CONFIG_NET_CLS_ACT | |
296 | if (exts->net) | |
297 | put_net(exts->net); | |
298 | #endif | |
299 | } | |
300 | ||
22dc13c8 | 301 | #ifdef CONFIG_NET_CLS_ACT |
244cd96a CW |
302 | #define tcf_exts_for_each_action(i, a, exts) \ |
303 | for (i = 0; i < TCA_ACT_MAX_PRIO && ((a) = (exts)->actions[i]); i++) | |
304 | #else | |
305 | #define tcf_exts_for_each_action(i, a, exts) \ | |
191672ca | 306 | for (; 0; (void)(i), (void)(a), (void)(exts)) |
22dc13c8 | 307 | #endif |
22dc13c8 | 308 | |
d897a638 JK |
309 | static inline void |
310 | tcf_exts_stats_update(const struct tcf_exts *exts, | |
311 | u64 bytes, u64 packets, u64 lastuse) | |
312 | { | |
313 | #ifdef CONFIG_NET_CLS_ACT | |
314 | int i; | |
315 | ||
316 | preempt_disable(); | |
317 | ||
318 | for (i = 0; i < exts->nr_actions; i++) { | |
319 | struct tc_action *a = exts->actions[i]; | |
320 | ||
321 | tcf_action_stats_update(a, bytes, packets, lastuse); | |
322 | } | |
323 | ||
324 | preempt_enable(); | |
325 | #endif | |
326 | } | |
327 | ||
3bcc0cec JP |
328 | /** |
329 | * tcf_exts_has_actions - check if at least one action is present | |
330 | * @exts: tc filter extensions handle | |
331 | * | |
332 | * Returns true if at least one action is present. | |
333 | */ | |
334 | static inline bool tcf_exts_has_actions(struct tcf_exts *exts) | |
335 | { | |
2734437e | 336 | #ifdef CONFIG_NET_CLS_ACT |
3bcc0cec JP |
337 | return exts->nr_actions; |
338 | #else | |
339 | return false; | |
340 | #endif | |
341 | } | |
2734437e | 342 | |
3bcc0cec JP |
343 | /** |
344 | * tcf_exts_has_one_action - check if exactly one action is present | |
345 | * @exts: tc filter extensions handle | |
346 | * | |
347 | * Returns true if exactly one action is present. | |
348 | */ | |
349 | static inline bool tcf_exts_has_one_action(struct tcf_exts *exts) | |
350 | { | |
351 | #ifdef CONFIG_NET_CLS_ACT | |
352 | return exts->nr_actions == 1; | |
353 | #else | |
354 | return false; | |
355 | #endif | |
356 | } | |
2734437e | 357 | |
244cd96a CW |
358 | static inline struct tc_action *tcf_exts_first_action(struct tcf_exts *exts) |
359 | { | |
360 | #ifdef CONFIG_NET_CLS_ACT | |
361 | return exts->actions[0]; | |
362 | #else | |
363 | return NULL; | |
364 | #endif | |
365 | } | |
366 | ||
af69afc5 JP |
367 | /** |
368 | * tcf_exts_exec - execute tc filter extensions | |
369 | * @skb: socket buffer | |
370 | * @exts: tc filter extensions handle | |
371 | * @res: desired result | |
372 | * | |
af089e70 | 373 | * Executes all configured extensions. Returns TC_ACT_OK on a normal execution, |
af69afc5 JP |
374 | * a negative number if the filter must be considered unmatched or |
375 | * a positive action code (TC_ACT_*) which must be returned to the | |
376 | * underlying layer. | |
377 | */ | |
378 | static inline int | |
379 | tcf_exts_exec(struct sk_buff *skb, struct tcf_exts *exts, | |
380 | struct tcf_result *res) | |
381 | { | |
382 | #ifdef CONFIG_NET_CLS_ACT | |
ec1a9cca | 383 | return tcf_action_exec(skb, exts->actions, exts->nr_actions, res); |
af69afc5 | 384 | #endif |
af089e70 | 385 | return TC_ACT_OK; |
af69afc5 JP |
386 | } |
387 | ||
5c15257f JP |
388 | int tcf_exts_validate(struct net *net, struct tcf_proto *tp, |
389 | struct nlattr **tb, struct nlattr *rate_tlv, | |
50a56190 AA |
390 | struct tcf_exts *exts, bool ovr, |
391 | struct netlink_ext_ack *extack); | |
18d0264f | 392 | void tcf_exts_destroy(struct tcf_exts *exts); |
9b0d4446 | 393 | void tcf_exts_change(struct tcf_exts *dst, struct tcf_exts *src); |
5da57f42 WC |
394 | int tcf_exts_dump(struct sk_buff *skb, struct tcf_exts *exts); |
395 | int tcf_exts_dump_stats(struct sk_buff *skb, struct tcf_exts *exts); | |
1da177e4 LT |
396 | |
397 | /** | |
398 | * struct tcf_pkt_info - packet information | |
399 | */ | |
fd2c3ef7 | 400 | struct tcf_pkt_info { |
1da177e4 LT |
401 | unsigned char * ptr; |
402 | int nexthdr; | |
403 | }; | |
404 | ||
405 | #ifdef CONFIG_NET_EMATCH | |
406 | ||
407 | struct tcf_ematch_ops; | |
408 | ||
409 | /** | |
410 | * struct tcf_ematch - extended match (ematch) | |
411 | * | |
412 | * @matchid: identifier to allow userspace to reidentify a match | |
413 | * @flags: flags specifying attributes and the relation to other matches | |
414 | * @ops: the operations lookup table of the corresponding ematch module | |
415 | * @datalen: length of the ematch specific configuration data | |
416 | * @data: ematch specific data | |
417 | */ | |
fd2c3ef7 | 418 | struct tcf_ematch { |
1da177e4 LT |
419 | struct tcf_ematch_ops * ops; |
420 | unsigned long data; | |
421 | unsigned int datalen; | |
422 | u16 matchid; | |
423 | u16 flags; | |
82a470f1 | 424 | struct net *net; |
1da177e4 LT |
425 | }; |
426 | ||
427 | static inline int tcf_em_is_container(struct tcf_ematch *em) | |
428 | { | |
429 | return !em->ops; | |
430 | } | |
431 | ||
432 | static inline int tcf_em_is_simple(struct tcf_ematch *em) | |
433 | { | |
434 | return em->flags & TCF_EM_SIMPLE; | |
435 | } | |
436 | ||
437 | static inline int tcf_em_is_inverted(struct tcf_ematch *em) | |
438 | { | |
439 | return em->flags & TCF_EM_INVERT; | |
440 | } | |
441 | ||
442 | static inline int tcf_em_last_match(struct tcf_ematch *em) | |
443 | { | |
444 | return (em->flags & TCF_EM_REL_MASK) == TCF_EM_REL_END; | |
445 | } | |
446 | ||
447 | static inline int tcf_em_early_end(struct tcf_ematch *em, int result) | |
448 | { | |
449 | if (tcf_em_last_match(em)) | |
450 | return 1; | |
451 | ||
452 | if (result == 0 && em->flags & TCF_EM_REL_AND) | |
453 | return 1; | |
454 | ||
455 | if (result != 0 && em->flags & TCF_EM_REL_OR) | |
456 | return 1; | |
457 | ||
458 | return 0; | |
459 | } | |
460 | ||
461 | /** | |
462 | * struct tcf_ematch_tree - ematch tree handle | |
463 | * | |
464 | * @hdr: ematch tree header supplied by userspace | |
465 | * @matches: array of ematches | |
466 | */ | |
fd2c3ef7 | 467 | struct tcf_ematch_tree { |
1da177e4 LT |
468 | struct tcf_ematch_tree_hdr hdr; |
469 | struct tcf_ematch * matches; | |
470 | ||
471 | }; | |
472 | ||
473 | /** | |
474 | * struct tcf_ematch_ops - ematch module operations | |
475 | * | |
476 | * @kind: identifier (kind) of this ematch module | |
477 | * @datalen: length of expected configuration data (optional) | |
478 | * @change: called during validation (optional) | |
479 | * @match: called during ematch tree evaluation, must return 1/0 | |
480 | * @destroy: called during destroyage (optional) | |
481 | * @dump: called during dumping process (optional) | |
482 | * @owner: owner, must be set to THIS_MODULE | |
483 | * @link: link to previous/next ematch module (internal use) | |
484 | */ | |
fd2c3ef7 | 485 | struct tcf_ematch_ops { |
1da177e4 LT |
486 | int kind; |
487 | int datalen; | |
82a470f1 | 488 | int (*change)(struct net *net, void *, |
1da177e4 LT |
489 | int, struct tcf_ematch *); |
490 | int (*match)(struct sk_buff *, struct tcf_ematch *, | |
491 | struct tcf_pkt_info *); | |
82a470f1 | 492 | void (*destroy)(struct tcf_ematch *); |
1da177e4 LT |
493 | int (*dump)(struct sk_buff *, struct tcf_ematch *); |
494 | struct module *owner; | |
495 | struct list_head link; | |
496 | }; | |
497 | ||
5c15257f JP |
498 | int tcf_em_register(struct tcf_ematch_ops *); |
499 | void tcf_em_unregister(struct tcf_ematch_ops *); | |
500 | int tcf_em_tree_validate(struct tcf_proto *, struct nlattr *, | |
501 | struct tcf_ematch_tree *); | |
82a470f1 | 502 | void tcf_em_tree_destroy(struct tcf_ematch_tree *); |
5c15257f JP |
503 | int tcf_em_tree_dump(struct sk_buff *, struct tcf_ematch_tree *, int); |
504 | int __tcf_em_tree_match(struct sk_buff *, struct tcf_ematch_tree *, | |
505 | struct tcf_pkt_info *); | |
1da177e4 | 506 | |
1da177e4 LT |
507 | /** |
508 | * tcf_em_tree_match - evaulate an ematch tree | |
509 | * | |
510 | * @skb: socket buffer of the packet in question | |
511 | * @tree: ematch tree to be used for evaluation | |
512 | * @info: packet information examined by classifier | |
513 | * | |
514 | * This function matches @skb against the ematch tree in @tree by going | |
515 | * through all ematches respecting their logic relations returning | |
516 | * as soon as the result is obvious. | |
517 | * | |
518 | * Returns 1 if the ematch tree as-one matches, no ematches are configured | |
519 | * or ematch is not enabled in the kernel, otherwise 0 is returned. | |
520 | */ | |
521 | static inline int tcf_em_tree_match(struct sk_buff *skb, | |
522 | struct tcf_ematch_tree *tree, | |
523 | struct tcf_pkt_info *info) | |
524 | { | |
525 | if (tree->hdr.nmatches) | |
526 | return __tcf_em_tree_match(skb, tree, info); | |
527 | else | |
528 | return 1; | |
529 | } | |
530 | ||
db3d99c0 PM |
531 | #define MODULE_ALIAS_TCF_EMATCH(kind) MODULE_ALIAS("ematch-kind-" __stringify(kind)) |
532 | ||
1da177e4 LT |
533 | #else /* CONFIG_NET_EMATCH */ |
534 | ||
fd2c3ef7 | 535 | struct tcf_ematch_tree { |
1da177e4 LT |
536 | }; |
537 | ||
538 | #define tcf_em_tree_validate(tp, tb, t) ((void)(t), 0) | |
82a470f1 | 539 | #define tcf_em_tree_destroy(t) do { (void)(t); } while(0) |
1da177e4 | 540 | #define tcf_em_tree_dump(skb, t, tlv) (0) |
1da177e4 LT |
541 | #define tcf_em_tree_match(skb, t, info) ((void)(info), 1) |
542 | ||
543 | #endif /* CONFIG_NET_EMATCH */ | |
544 | ||
545 | static inline unsigned char * tcf_get_base_ptr(struct sk_buff *skb, int layer) | |
546 | { | |
547 | switch (layer) { | |
548 | case TCF_LAYER_LINK: | |
d3303a65 | 549 | return skb_mac_header(skb); |
1da177e4 | 550 | case TCF_LAYER_NETWORK: |
d56f90a7 | 551 | return skb_network_header(skb); |
1da177e4 | 552 | case TCF_LAYER_TRANSPORT: |
9c70220b | 553 | return skb_transport_header(skb); |
1da177e4 LT |
554 | } |
555 | ||
556 | return NULL; | |
557 | } | |
558 | ||
eddc9ec5 ACM |
559 | static inline int tcf_valid_offset(const struct sk_buff *skb, |
560 | const unsigned char *ptr, const int len) | |
1da177e4 | 561 | { |
da521b2c DM |
562 | return likely((ptr + len) <= skb_tail_pointer(skb) && |
563 | ptr >= skb->head && | |
564 | (ptr <= (ptr + len))); | |
1da177e4 LT |
565 | } |
566 | ||
567 | #ifdef CONFIG_NET_CLS_IND | |
0eeb8ffc DL |
568 | #include <net/net_namespace.h> |
569 | ||
1da177e4 | 570 | static inline int |
1057c55f AA |
571 | tcf_change_indev(struct net *net, struct nlattr *indev_tlv, |
572 | struct netlink_ext_ack *extack) | |
1da177e4 | 573 | { |
2519a602 WC |
574 | char indev[IFNAMSIZ]; |
575 | struct net_device *dev; | |
576 | ||
1057c55f AA |
577 | if (nla_strlcpy(indev, indev_tlv, IFNAMSIZ) >= IFNAMSIZ) { |
578 | NL_SET_ERR_MSG(extack, "Interface name too long"); | |
1da177e4 | 579 | return -EINVAL; |
1057c55f | 580 | } |
2519a602 WC |
581 | dev = __dev_get_by_name(net, indev); |
582 | if (!dev) | |
583 | return -ENODEV; | |
584 | return dev->ifindex; | |
1da177e4 LT |
585 | } |
586 | ||
2519a602 WC |
587 | static inline bool |
588 | tcf_match_indev(struct sk_buff *skb, int ifindex) | |
1da177e4 | 589 | { |
2519a602 WC |
590 | if (!ifindex) |
591 | return true; | |
592 | if (!skb->skb_iif) | |
593 | return false; | |
594 | return ifindex == skb->skb_iif; | |
1da177e4 LT |
595 | } |
596 | #endif /* CONFIG_NET_CLS_IND */ | |
597 | ||
208c0f4b JP |
598 | int tc_setup_cb_call(struct tcf_block *block, struct tcf_exts *exts, |
599 | enum tc_setup_type type, void *type_data, bool err_stop); | |
717503b9 | 600 | |
8c4083b3 JP |
601 | enum tc_block_command { |
602 | TC_BLOCK_BIND, | |
603 | TC_BLOCK_UNBIND, | |
604 | }; | |
605 | ||
606 | struct tc_block_offload { | |
607 | enum tc_block_command command; | |
608 | enum tcf_block_binder_type binder_type; | |
609 | struct tcf_block *block; | |
60513bd8 | 610 | struct netlink_ext_ack *extack; |
8c4083b3 JP |
611 | }; |
612 | ||
5fd9fc4e | 613 | struct tc_cls_common_offload { |
5fd9fc4e JP |
614 | u32 chain_index; |
615 | __be16 protocol; | |
d7c1c8d2 | 616 | u32 prio; |
8f0b425a | 617 | struct netlink_ext_ack *extack; |
5fd9fc4e JP |
618 | }; |
619 | ||
a1b7c5fd JF |
620 | struct tc_cls_u32_knode { |
621 | struct tcf_exts *exts; | |
e014860e | 622 | struct tc_u32_sel *sel; |
a1b7c5fd JF |
623 | u32 handle; |
624 | u32 val; | |
625 | u32 mask; | |
626 | u32 link_handle; | |
e014860e | 627 | u8 fshift; |
a1b7c5fd JF |
628 | }; |
629 | ||
630 | struct tc_cls_u32_hnode { | |
631 | u32 handle; | |
632 | u32 prio; | |
633 | unsigned int divisor; | |
634 | }; | |
635 | ||
636 | enum tc_clsu32_command { | |
637 | TC_CLSU32_NEW_KNODE, | |
638 | TC_CLSU32_REPLACE_KNODE, | |
639 | TC_CLSU32_DELETE_KNODE, | |
640 | TC_CLSU32_NEW_HNODE, | |
641 | TC_CLSU32_REPLACE_HNODE, | |
642 | TC_CLSU32_DELETE_HNODE, | |
643 | }; | |
644 | ||
645 | struct tc_cls_u32_offload { | |
5fd9fc4e | 646 | struct tc_cls_common_offload common; |
a1b7c5fd JF |
647 | /* knode values */ |
648 | enum tc_clsu32_command command; | |
649 | union { | |
650 | struct tc_cls_u32_knode knode; | |
651 | struct tc_cls_u32_hnode hnode; | |
652 | }; | |
653 | }; | |
654 | ||
7b06e8ae | 655 | static inline bool tc_can_offload(const struct net_device *dev) |
6843e7a2 | 656 | { |
70b5aee4 | 657 | return dev->features & NETIF_F_HW_TC; |
6843e7a2 JF |
658 | } |
659 | ||
f9eda14f QM |
660 | static inline bool tc_can_offload_extack(const struct net_device *dev, |
661 | struct netlink_ext_ack *extack) | |
662 | { | |
663 | bool can = tc_can_offload(dev); | |
664 | ||
665 | if (!can) | |
666 | NL_SET_ERR_MSG(extack, "TC offload is disabled on net device"); | |
667 | ||
668 | return can; | |
669 | } | |
670 | ||
878db9f0 JK |
671 | static inline bool |
672 | tc_cls_can_offload_and_chain0(const struct net_device *dev, | |
673 | struct tc_cls_common_offload *common) | |
674 | { | |
675 | if (!tc_can_offload_extack(dev, common->extack)) | |
676 | return false; | |
677 | if (common->chain_index) { | |
678 | NL_SET_ERR_MSG(common->extack, | |
679 | "Driver supports only offload of chain 0"); | |
680 | return false; | |
681 | } | |
682 | return true; | |
683 | } | |
684 | ||
55330f05 HHZ |
685 | static inline bool tc_skip_hw(u32 flags) |
686 | { | |
687 | return (flags & TCA_CLS_FLAGS_SKIP_HW) ? true : false; | |
688 | } | |
689 | ||
d34e3e18 SS |
690 | static inline bool tc_skip_sw(u32 flags) |
691 | { | |
692 | return (flags & TCA_CLS_FLAGS_SKIP_SW) ? true : false; | |
693 | } | |
694 | ||
695 | /* SKIP_HW and SKIP_SW are mutually exclusive flags. */ | |
696 | static inline bool tc_flags_valid(u32 flags) | |
697 | { | |
81c7288b MRL |
698 | if (flags & ~(TCA_CLS_FLAGS_SKIP_HW | TCA_CLS_FLAGS_SKIP_SW | |
699 | TCA_CLS_FLAGS_VERBOSE)) | |
d34e3e18 SS |
700 | return false; |
701 | ||
81c7288b | 702 | flags &= TCA_CLS_FLAGS_SKIP_HW | TCA_CLS_FLAGS_SKIP_SW; |
d34e3e18 SS |
703 | if (!(flags ^ (TCA_CLS_FLAGS_SKIP_HW | TCA_CLS_FLAGS_SKIP_SW))) |
704 | return false; | |
705 | ||
706 | return true; | |
707 | } | |
708 | ||
e696028a OG |
709 | static inline bool tc_in_hw(u32 flags) |
710 | { | |
711 | return (flags & TCA_CLS_FLAGS_IN_HW) ? true : false; | |
712 | } | |
713 | ||
34832e1c JK |
714 | static inline void |
715 | tc_cls_common_offload_init(struct tc_cls_common_offload *cls_common, | |
716 | const struct tcf_proto *tp, u32 flags, | |
717 | struct netlink_ext_ack *extack) | |
718 | { | |
719 | cls_common->chain_index = tp->chain->index; | |
720 | cls_common->protocol = tp->protocol; | |
721 | cls_common->prio = tp->prio; | |
81c7288b | 722 | if (tc_skip_sw(flags) || flags & TCA_CLS_FLAGS_VERBOSE) |
34832e1c JK |
723 | cls_common->extack = extack; |
724 | } | |
725 | ||
5b33f488 AV |
726 | enum tc_fl_command { |
727 | TC_CLSFLOWER_REPLACE, | |
728 | TC_CLSFLOWER_DESTROY, | |
10cbc684 | 729 | TC_CLSFLOWER_STATS, |
34738452 JP |
730 | TC_CLSFLOWER_TMPLT_CREATE, |
731 | TC_CLSFLOWER_TMPLT_DESTROY, | |
5b33f488 AV |
732 | }; |
733 | ||
734 | struct tc_cls_flower_offload { | |
5fd9fc4e | 735 | struct tc_cls_common_offload common; |
5b33f488 | 736 | enum tc_fl_command command; |
8208d21b | 737 | unsigned long cookie; |
5b33f488 AV |
738 | struct flow_dissector *dissector; |
739 | struct fl_flow_key *mask; | |
740 | struct fl_flow_key *key; | |
741 | struct tcf_exts *exts; | |
384c181e | 742 | u32 classid; |
5b33f488 AV |
743 | }; |
744 | ||
b87f7936 YG |
745 | enum tc_matchall_command { |
746 | TC_CLSMATCHALL_REPLACE, | |
747 | TC_CLSMATCHALL_DESTROY, | |
748 | }; | |
749 | ||
750 | struct tc_cls_matchall_offload { | |
5fd9fc4e | 751 | struct tc_cls_common_offload common; |
b87f7936 YG |
752 | enum tc_matchall_command command; |
753 | struct tcf_exts *exts; | |
754 | unsigned long cookie; | |
755 | }; | |
756 | ||
332ae8e2 | 757 | enum tc_clsbpf_command { |
102740bd | 758 | TC_CLSBPF_OFFLOAD, |
68d64063 | 759 | TC_CLSBPF_STATS, |
332ae8e2 JK |
760 | }; |
761 | ||
762 | struct tc_cls_bpf_offload { | |
5fd9fc4e | 763 | struct tc_cls_common_offload common; |
332ae8e2 JK |
764 | enum tc_clsbpf_command command; |
765 | struct tcf_exts *exts; | |
766 | struct bpf_prog *prog; | |
102740bd | 767 | struct bpf_prog *oldprog; |
332ae8e2 JK |
768 | const char *name; |
769 | bool exts_integrated; | |
770 | }; | |
771 | ||
4e8b86c0 AN |
772 | struct tc_mqprio_qopt_offload { |
773 | /* struct tc_mqprio_qopt must always be the first element */ | |
774 | struct tc_mqprio_qopt qopt; | |
775 | u16 mode; | |
776 | u16 shaper; | |
777 | u32 flags; | |
778 | u64 min_rate[TC_QOPT_MAX_QUEUE]; | |
779 | u64 max_rate[TC_QOPT_MAX_QUEUE]; | |
780 | }; | |
1045ba77 JHS |
781 | |
782 | /* This structure holds cookie structure that is passed from user | |
783 | * to the kernel for actions and classifiers | |
784 | */ | |
785 | struct tc_cookie { | |
786 | u8 *data; | |
787 | u32 len; | |
eec94fdb | 788 | struct rcu_head rcu; |
1045ba77 | 789 | }; |
602f3baf | 790 | |
f34b4aac NF |
791 | struct tc_qopt_offload_stats { |
792 | struct gnet_stats_basic_packed *bstats; | |
793 | struct gnet_stats_queue *qstats; | |
794 | }; | |
795 | ||
f971b132 JK |
796 | enum tc_mq_command { |
797 | TC_MQ_CREATE, | |
798 | TC_MQ_DESTROY, | |
47c669a4 | 799 | TC_MQ_STATS, |
f971b132 JK |
800 | }; |
801 | ||
802 | struct tc_mq_qopt_offload { | |
803 | enum tc_mq_command command; | |
804 | u32 handle; | |
47c669a4 | 805 | struct tc_qopt_offload_stats stats; |
f971b132 JK |
806 | }; |
807 | ||
602f3baf NF |
808 | enum tc_red_command { |
809 | TC_RED_REPLACE, | |
810 | TC_RED_DESTROY, | |
811 | TC_RED_STATS, | |
812 | TC_RED_XSTATS, | |
813 | }; | |
814 | ||
815 | struct tc_red_qopt_offload_params { | |
816 | u32 min; | |
817 | u32 max; | |
818 | u32 probability; | |
819 | bool is_ecn; | |
416ef9b1 | 820 | struct gnet_stats_queue *qstats; |
602f3baf | 821 | }; |
602f3baf NF |
822 | |
823 | struct tc_red_qopt_offload { | |
824 | enum tc_red_command command; | |
825 | u32 handle; | |
826 | u32 parent; | |
827 | union { | |
828 | struct tc_red_qopt_offload_params set; | |
f34b4aac | 829 | struct tc_qopt_offload_stats stats; |
602f3baf NF |
830 | struct red_stats *xstats; |
831 | }; | |
832 | }; | |
833 | ||
7fdb61b4 NF |
834 | enum tc_prio_command { |
835 | TC_PRIO_REPLACE, | |
836 | TC_PRIO_DESTROY, | |
837 | TC_PRIO_STATS, | |
b9c7a7ac | 838 | TC_PRIO_GRAFT, |
7fdb61b4 NF |
839 | }; |
840 | ||
841 | struct tc_prio_qopt_offload_params { | |
842 | int bands; | |
843 | u8 priomap[TC_PRIO_MAX + 1]; | |
844 | /* In case that a prio qdisc is offloaded and now is changed to a | |
845 | * non-offloadedable config, it needs to update the backlog & qlen | |
846 | * values to negate the HW backlog & qlen values (and only them). | |
847 | */ | |
848 | struct gnet_stats_queue *qstats; | |
849 | }; | |
850 | ||
b9c7a7ac NF |
851 | struct tc_prio_qopt_offload_graft_params { |
852 | u8 band; | |
853 | u32 child_handle; | |
854 | }; | |
855 | ||
7fdb61b4 NF |
856 | struct tc_prio_qopt_offload { |
857 | enum tc_prio_command command; | |
858 | u32 handle; | |
859 | u32 parent; | |
860 | union { | |
861 | struct tc_prio_qopt_offload_params replace_params; | |
862 | struct tc_qopt_offload_stats stats; | |
b9c7a7ac | 863 | struct tc_prio_qopt_offload_graft_params graft_params; |
7fdb61b4 NF |
864 | }; |
865 | }; | |
b9c7a7ac | 866 | |
1da177e4 | 867 | #endif |