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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> | |
8f256622 | 9 | #include <net/flow_offload.h> |
1da177e4 | 10 | |
cd11b164 PA |
11 | /* TC action not accessible from user space */ |
12 | #define TC_ACT_REINSERT (TC_ACT_VALUE_MAX + 1) | |
13 | ||
1da177e4 LT |
14 | /* Basic packet classifier frontend definitions. */ |
15 | ||
fd2c3ef7 | 16 | struct tcf_walker { |
1da177e4 LT |
17 | int stop; |
18 | int skip; | |
19 | int count; | |
01683a14 | 20 | unsigned long cookie; |
8113c095 | 21 | int (*fn)(struct tcf_proto *, void *node, struct tcf_walker *); |
1da177e4 LT |
22 | }; |
23 | ||
5c15257f JP |
24 | int register_tcf_proto_ops(struct tcf_proto_ops *ops); |
25 | int unregister_tcf_proto_ops(struct tcf_proto_ops *ops); | |
1da177e4 | 26 | |
8c4083b3 JP |
27 | enum tcf_block_binder_type { |
28 | TCF_BLOCK_BINDER_TYPE_UNSPEC, | |
6e40cf2d JP |
29 | TCF_BLOCK_BINDER_TYPE_CLSACT_INGRESS, |
30 | TCF_BLOCK_BINDER_TYPE_CLSACT_EGRESS, | |
8c4083b3 JP |
31 | }; |
32 | ||
33 | struct tcf_block_ext_info { | |
34 | enum tcf_block_binder_type binder_type; | |
c7eb7d72 JP |
35 | tcf_chain_head_change_t *chain_head_change; |
36 | void *chain_head_change_priv; | |
48617387 | 37 | u32 block_index; |
8c4083b3 JP |
38 | }; |
39 | ||
acb67442 | 40 | struct tcf_block_cb; |
aaa908ff | 41 | bool tcf_queue_work(struct rcu_work *rwork, work_func_t func); |
acb67442 | 42 | |
8ae70032 | 43 | #ifdef CONFIG_NET_CLS |
1f3ed383 JP |
44 | struct tcf_chain *tcf_chain_get_by_act(struct tcf_block *block, |
45 | u32 chain_index); | |
1f3ed383 | 46 | void tcf_chain_put_by_act(struct tcf_chain *chain); |
bbf73830 VB |
47 | struct tcf_chain *tcf_get_next_chain(struct tcf_block *block, |
48 | struct tcf_chain *chain); | |
fe2923af | 49 | struct tcf_proto *tcf_get_next_proto(struct tcf_chain *chain, |
12db03b6 | 50 | struct tcf_proto *tp, bool rtnl_held); |
f36fe1c4 | 51 | void tcf_block_netif_keep_dst(struct tcf_block *block); |
6529eaba | 52 | int tcf_block_get(struct tcf_block **p_block, |
8d1a77f9 AA |
53 | struct tcf_proto __rcu **p_filter_chain, struct Qdisc *q, |
54 | struct netlink_ext_ack *extack); | |
c7eb7d72 | 55 | int tcf_block_get_ext(struct tcf_block **p_block, struct Qdisc *q, |
8d1a77f9 AA |
56 | struct tcf_block_ext_info *ei, |
57 | struct netlink_ext_ack *extack); | |
6529eaba | 58 | void tcf_block_put(struct tcf_block *block); |
c7eb7d72 | 59 | void tcf_block_put_ext(struct tcf_block *block, struct Qdisc *q, |
8c4083b3 | 60 | struct tcf_block_ext_info *ei); |
44186460 | 61 | |
48617387 JP |
62 | static inline bool tcf_block_shared(struct tcf_block *block) |
63 | { | |
64 | return block->index; | |
65 | } | |
66 | ||
44186460 JP |
67 | static inline struct Qdisc *tcf_block_q(struct tcf_block *block) |
68 | { | |
48617387 | 69 | WARN_ON(tcf_block_shared(block)); |
44186460 JP |
70 | return block->q; |
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); | |
7f76fa36 JH |
89 | int __tc_indr_block_cb_register(struct net_device *dev, void *cb_priv, |
90 | tc_indr_block_bind_cb_t *cb, void *cb_ident); | |
91 | int tc_indr_block_cb_register(struct net_device *dev, void *cb_priv, | |
92 | tc_indr_block_bind_cb_t *cb, void *cb_ident); | |
93 | void __tc_indr_block_cb_unregister(struct net_device *dev, | |
94 | tc_indr_block_bind_cb_t *cb, void *cb_ident); | |
95 | void tc_indr_block_cb_unregister(struct net_device *dev, | |
96 | tc_indr_block_bind_cb_t *cb, void *cb_ident); | |
acb67442 | 97 | |
87d83093 JP |
98 | int tcf_classify(struct sk_buff *skb, const struct tcf_proto *tp, |
99 | struct tcf_result *res, bool compat_mode); | |
100 | ||
8ae70032 | 101 | #else |
6529eaba JP |
102 | static inline |
103 | int tcf_block_get(struct tcf_block **p_block, | |
3c149091 SM |
104 | struct tcf_proto __rcu **p_filter_chain, struct Qdisc *q, |
105 | struct netlink_ext_ack *extack) | |
6529eaba JP |
106 | { |
107 | return 0; | |
108 | } | |
109 | ||
8c4083b3 | 110 | static inline |
c7eb7d72 | 111 | int tcf_block_get_ext(struct tcf_block **p_block, struct Qdisc *q, |
33c30a8b QM |
112 | struct tcf_block_ext_info *ei, |
113 | struct netlink_ext_ack *extack) | |
8c4083b3 JP |
114 | { |
115 | return 0; | |
116 | } | |
117 | ||
6529eaba | 118 | static inline void tcf_block_put(struct tcf_block *block) |
8ae70032 JP |
119 | { |
120 | } | |
87d83093 | 121 | |
8c4083b3 | 122 | static inline |
c7eb7d72 | 123 | void tcf_block_put_ext(struct tcf_block *block, struct Qdisc *q, |
8c4083b3 JP |
124 | struct tcf_block_ext_info *ei) |
125 | { | |
126 | } | |
127 | ||
44186460 JP |
128 | static inline struct Qdisc *tcf_block_q(struct tcf_block *block) |
129 | { | |
130 | return NULL; | |
131 | } | |
132 | ||
acb67442 JP |
133 | static inline |
134 | int tc_setup_cb_block_register(struct tcf_block *block, tc_setup_cb_t *cb, | |
135 | void *cb_priv) | |
136 | { | |
137 | return 0; | |
138 | } | |
139 | ||
140 | static inline | |
141 | void tc_setup_cb_block_unregister(struct tcf_block *block, tc_setup_cb_t *cb, | |
142 | void *cb_priv) | |
143 | { | |
144 | } | |
145 | ||
146 | static inline | |
147 | void *tcf_block_cb_priv(struct tcf_block_cb *block_cb) | |
148 | { | |
149 | return NULL; | |
150 | } | |
151 | ||
152 | static inline | |
153 | struct tcf_block_cb *tcf_block_cb_lookup(struct tcf_block *block, | |
154 | tc_setup_cb_t *cb, void *cb_ident) | |
155 | { | |
156 | return NULL; | |
157 | } | |
158 | ||
159 | static inline | |
160 | void tcf_block_cb_incref(struct tcf_block_cb *block_cb) | |
161 | { | |
162 | } | |
163 | ||
164 | static inline | |
165 | unsigned int tcf_block_cb_decref(struct tcf_block_cb *block_cb) | |
166 | { | |
167 | return 0; | |
168 | } | |
169 | ||
170 | static inline | |
171 | struct tcf_block_cb *__tcf_block_cb_register(struct tcf_block *block, | |
172 | tc_setup_cb_t *cb, void *cb_ident, | |
60513bd8 JH |
173 | void *cb_priv, |
174 | struct netlink_ext_ack *extack) | |
acb67442 JP |
175 | { |
176 | return NULL; | |
177 | } | |
178 | ||
179 | static inline | |
180 | int tcf_block_cb_register(struct tcf_block *block, | |
181 | tc_setup_cb_t *cb, void *cb_ident, | |
60513bd8 | 182 | void *cb_priv, struct netlink_ext_ack *extack) |
acb67442 JP |
183 | { |
184 | return 0; | |
185 | } | |
186 | ||
187 | static inline | |
32636742 JH |
188 | void __tcf_block_cb_unregister(struct tcf_block *block, |
189 | struct tcf_block_cb *block_cb) | |
acb67442 JP |
190 | { |
191 | } | |
192 | ||
193 | static inline | |
194 | void tcf_block_cb_unregister(struct tcf_block *block, | |
195 | tc_setup_cb_t *cb, void *cb_ident) | |
196 | { | |
197 | } | |
198 | ||
7f76fa36 JH |
199 | static inline |
200 | int __tc_indr_block_cb_register(struct net_device *dev, void *cb_priv, | |
201 | tc_indr_block_bind_cb_t *cb, void *cb_ident) | |
202 | { | |
203 | return 0; | |
204 | } | |
205 | ||
206 | static inline | |
207 | int tc_indr_block_cb_register(struct net_device *dev, void *cb_priv, | |
208 | tc_indr_block_bind_cb_t *cb, void *cb_ident) | |
209 | { | |
210 | return 0; | |
211 | } | |
212 | ||
213 | static inline | |
214 | void __tc_indr_block_cb_unregister(struct net_device *dev, | |
215 | tc_indr_block_bind_cb_t *cb, void *cb_ident) | |
216 | { | |
217 | } | |
218 | ||
219 | static inline | |
220 | void tc_indr_block_cb_unregister(struct net_device *dev, | |
221 | tc_indr_block_bind_cb_t *cb, void *cb_ident) | |
222 | { | |
223 | } | |
224 | ||
87d83093 JP |
225 | static inline int tcf_classify(struct sk_buff *skb, const struct tcf_proto *tp, |
226 | struct tcf_result *res, bool compat_mode) | |
227 | { | |
228 | return TC_ACT_UNSPEC; | |
229 | } | |
8ae70032 | 230 | #endif |
cf1facda | 231 | |
1da177e4 LT |
232 | static inline unsigned long |
233 | __cls_set_class(unsigned long *clp, unsigned long cl) | |
234 | { | |
a0efb80c | 235 | return xchg(clp, cl); |
1da177e4 LT |
236 | } |
237 | ||
238 | static inline unsigned long | |
34e3759c | 239 | cls_set_class(struct Qdisc *q, unsigned long *clp, unsigned long cl) |
1da177e4 LT |
240 | { |
241 | unsigned long old_cl; | |
34e3759c JP |
242 | |
243 | sch_tree_lock(q); | |
1da177e4 | 244 | old_cl = __cls_set_class(clp, cl); |
34e3759c | 245 | sch_tree_unlock(q); |
1da177e4 LT |
246 | return old_cl; |
247 | } | |
248 | ||
249 | static inline void | |
250 | tcf_bind_filter(struct tcf_proto *tp, struct tcf_result *r, unsigned long base) | |
251 | { | |
34e3759c | 252 | struct Qdisc *q = tp->chain->block->q; |
1da177e4 LT |
253 | unsigned long cl; |
254 | ||
34e3759c JP |
255 | /* Check q as it is not set for shared blocks. In that case, |
256 | * setting class is not supported. | |
257 | */ | |
258 | if (!q) | |
259 | return; | |
260 | cl = q->ops->cl_ops->bind_tcf(q, base, r->classid); | |
261 | cl = cls_set_class(q, &r->class, cl); | |
1da177e4 | 262 | if (cl) |
34e3759c | 263 | q->ops->cl_ops->unbind_tcf(q, cl); |
1da177e4 LT |
264 | } |
265 | ||
266 | static inline void | |
267 | tcf_unbind_filter(struct tcf_proto *tp, struct tcf_result *r) | |
268 | { | |
34e3759c | 269 | struct Qdisc *q = tp->chain->block->q; |
1da177e4 LT |
270 | unsigned long cl; |
271 | ||
34e3759c JP |
272 | if (!q) |
273 | return; | |
1da177e4 | 274 | if ((cl = __cls_set_class(&r->class, 0)) != 0) |
34e3759c | 275 | q->ops->cl_ops->unbind_tcf(q, cl); |
1da177e4 LT |
276 | } |
277 | ||
fd2c3ef7 | 278 | struct tcf_exts { |
1da177e4 | 279 | #ifdef CONFIG_NET_CLS_ACT |
33be6271 | 280 | __u32 type; /* for backward compat(TCA_OLD_COMPAT) */ |
22dc13c8 WC |
281 | int nr_actions; |
282 | struct tc_action **actions; | |
e4b95c41 | 283 | struct net *net; |
1da177e4 | 284 | #endif |
5da57f42 WC |
285 | /* Map to export classifier specific extension TLV types to the |
286 | * generic extensions API. Unsupported extensions must be set to 0. | |
287 | */ | |
1da177e4 LT |
288 | int action; |
289 | int police; | |
290 | }; | |
291 | ||
b9a24bb7 | 292 | static inline int tcf_exts_init(struct tcf_exts *exts, int action, int police) |
33be6271 WC |
293 | { |
294 | #ifdef CONFIG_NET_CLS_ACT | |
5da57f42 | 295 | exts->type = 0; |
22dc13c8 | 296 | exts->nr_actions = 0; |
e4b95c41 | 297 | exts->net = NULL; |
22dc13c8 WC |
298 | exts->actions = kcalloc(TCA_ACT_MAX_PRIO, sizeof(struct tc_action *), |
299 | GFP_KERNEL); | |
b9a24bb7 WC |
300 | if (!exts->actions) |
301 | return -ENOMEM; | |
33be6271 | 302 | #endif |
5da57f42 WC |
303 | exts->action = action; |
304 | exts->police = police; | |
b9a24bb7 | 305 | return 0; |
33be6271 WC |
306 | } |
307 | ||
e4b95c41 CW |
308 | /* Return false if the netns is being destroyed in cleanup_net(). Callers |
309 | * need to do cleanup synchronously in this case, otherwise may race with | |
310 | * tc_action_net_exit(). Return true for other cases. | |
311 | */ | |
312 | static inline bool tcf_exts_get_net(struct tcf_exts *exts) | |
313 | { | |
314 | #ifdef CONFIG_NET_CLS_ACT | |
315 | exts->net = maybe_get_net(exts->net); | |
316 | return exts->net != NULL; | |
317 | #else | |
318 | return true; | |
319 | #endif | |
320 | } | |
321 | ||
322 | static inline void tcf_exts_put_net(struct tcf_exts *exts) | |
323 | { | |
324 | #ifdef CONFIG_NET_CLS_ACT | |
325 | if (exts->net) | |
326 | put_net(exts->net); | |
327 | #endif | |
328 | } | |
329 | ||
22dc13c8 | 330 | #ifdef CONFIG_NET_CLS_ACT |
244cd96a CW |
331 | #define tcf_exts_for_each_action(i, a, exts) \ |
332 | for (i = 0; i < TCA_ACT_MAX_PRIO && ((a) = (exts)->actions[i]); i++) | |
333 | #else | |
334 | #define tcf_exts_for_each_action(i, a, exts) \ | |
191672ca | 335 | for (; 0; (void)(i), (void)(a), (void)(exts)) |
22dc13c8 | 336 | #endif |
22dc13c8 | 337 | |
d897a638 JK |
338 | static inline void |
339 | tcf_exts_stats_update(const struct tcf_exts *exts, | |
340 | u64 bytes, u64 packets, u64 lastuse) | |
341 | { | |
342 | #ifdef CONFIG_NET_CLS_ACT | |
343 | int i; | |
344 | ||
345 | preempt_disable(); | |
346 | ||
347 | for (i = 0; i < exts->nr_actions; i++) { | |
348 | struct tc_action *a = exts->actions[i]; | |
349 | ||
28169aba | 350 | tcf_action_stats_update(a, bytes, packets, lastuse, true); |
d897a638 JK |
351 | } |
352 | ||
353 | preempt_enable(); | |
354 | #endif | |
355 | } | |
356 | ||
3bcc0cec JP |
357 | /** |
358 | * tcf_exts_has_actions - check if at least one action is present | |
359 | * @exts: tc filter extensions handle | |
360 | * | |
361 | * Returns true if at least one action is present. | |
362 | */ | |
363 | static inline bool tcf_exts_has_actions(struct tcf_exts *exts) | |
364 | { | |
2734437e | 365 | #ifdef CONFIG_NET_CLS_ACT |
3bcc0cec JP |
366 | return exts->nr_actions; |
367 | #else | |
368 | return false; | |
369 | #endif | |
370 | } | |
2734437e | 371 | |
3bcc0cec JP |
372 | /** |
373 | * tcf_exts_has_one_action - check if exactly one action is present | |
374 | * @exts: tc filter extensions handle | |
375 | * | |
376 | * Returns true if exactly one action is present. | |
377 | */ | |
378 | static inline bool tcf_exts_has_one_action(struct tcf_exts *exts) | |
379 | { | |
380 | #ifdef CONFIG_NET_CLS_ACT | |
381 | return exts->nr_actions == 1; | |
382 | #else | |
383 | return false; | |
384 | #endif | |
385 | } | |
2734437e | 386 | |
244cd96a CW |
387 | static inline struct tc_action *tcf_exts_first_action(struct tcf_exts *exts) |
388 | { | |
389 | #ifdef CONFIG_NET_CLS_ACT | |
390 | return exts->actions[0]; | |
391 | #else | |
392 | return NULL; | |
393 | #endif | |
394 | } | |
395 | ||
af69afc5 JP |
396 | /** |
397 | * tcf_exts_exec - execute tc filter extensions | |
398 | * @skb: socket buffer | |
399 | * @exts: tc filter extensions handle | |
400 | * @res: desired result | |
401 | * | |
af089e70 | 402 | * Executes all configured extensions. Returns TC_ACT_OK on a normal execution, |
af69afc5 JP |
403 | * a negative number if the filter must be considered unmatched or |
404 | * a positive action code (TC_ACT_*) which must be returned to the | |
405 | * underlying layer. | |
406 | */ | |
407 | static inline int | |
408 | tcf_exts_exec(struct sk_buff *skb, struct tcf_exts *exts, | |
409 | struct tcf_result *res) | |
410 | { | |
411 | #ifdef CONFIG_NET_CLS_ACT | |
ec1a9cca | 412 | return tcf_action_exec(skb, exts->actions, exts->nr_actions, res); |
af69afc5 | 413 | #endif |
af089e70 | 414 | return TC_ACT_OK; |
af69afc5 JP |
415 | } |
416 | ||
5c15257f JP |
417 | int tcf_exts_validate(struct net *net, struct tcf_proto *tp, |
418 | struct nlattr **tb, struct nlattr *rate_tlv, | |
ec6743a1 | 419 | struct tcf_exts *exts, bool ovr, bool rtnl_held, |
50a56190 | 420 | struct netlink_ext_ack *extack); |
18d0264f | 421 | void tcf_exts_destroy(struct tcf_exts *exts); |
9b0d4446 | 422 | void tcf_exts_change(struct tcf_exts *dst, struct tcf_exts *src); |
5da57f42 WC |
423 | int tcf_exts_dump(struct sk_buff *skb, struct tcf_exts *exts); |
424 | int tcf_exts_dump_stats(struct sk_buff *skb, struct tcf_exts *exts); | |
1da177e4 LT |
425 | |
426 | /** | |
427 | * struct tcf_pkt_info - packet information | |
428 | */ | |
fd2c3ef7 | 429 | struct tcf_pkt_info { |
1da177e4 LT |
430 | unsigned char * ptr; |
431 | int nexthdr; | |
432 | }; | |
433 | ||
434 | #ifdef CONFIG_NET_EMATCH | |
435 | ||
436 | struct tcf_ematch_ops; | |
437 | ||
438 | /** | |
439 | * struct tcf_ematch - extended match (ematch) | |
440 | * | |
441 | * @matchid: identifier to allow userspace to reidentify a match | |
442 | * @flags: flags specifying attributes and the relation to other matches | |
443 | * @ops: the operations lookup table of the corresponding ematch module | |
444 | * @datalen: length of the ematch specific configuration data | |
445 | * @data: ematch specific data | |
446 | */ | |
fd2c3ef7 | 447 | struct tcf_ematch { |
1da177e4 LT |
448 | struct tcf_ematch_ops * ops; |
449 | unsigned long data; | |
450 | unsigned int datalen; | |
451 | u16 matchid; | |
452 | u16 flags; | |
82a470f1 | 453 | struct net *net; |
1da177e4 LT |
454 | }; |
455 | ||
456 | static inline int tcf_em_is_container(struct tcf_ematch *em) | |
457 | { | |
458 | return !em->ops; | |
459 | } | |
460 | ||
461 | static inline int tcf_em_is_simple(struct tcf_ematch *em) | |
462 | { | |
463 | return em->flags & TCF_EM_SIMPLE; | |
464 | } | |
465 | ||
466 | static inline int tcf_em_is_inverted(struct tcf_ematch *em) | |
467 | { | |
468 | return em->flags & TCF_EM_INVERT; | |
469 | } | |
470 | ||
471 | static inline int tcf_em_last_match(struct tcf_ematch *em) | |
472 | { | |
473 | return (em->flags & TCF_EM_REL_MASK) == TCF_EM_REL_END; | |
474 | } | |
475 | ||
476 | static inline int tcf_em_early_end(struct tcf_ematch *em, int result) | |
477 | { | |
478 | if (tcf_em_last_match(em)) | |
479 | return 1; | |
480 | ||
481 | if (result == 0 && em->flags & TCF_EM_REL_AND) | |
482 | return 1; | |
483 | ||
484 | if (result != 0 && em->flags & TCF_EM_REL_OR) | |
485 | return 1; | |
486 | ||
487 | return 0; | |
488 | } | |
489 | ||
490 | /** | |
491 | * struct tcf_ematch_tree - ematch tree handle | |
492 | * | |
493 | * @hdr: ematch tree header supplied by userspace | |
494 | * @matches: array of ematches | |
495 | */ | |
fd2c3ef7 | 496 | struct tcf_ematch_tree { |
1da177e4 LT |
497 | struct tcf_ematch_tree_hdr hdr; |
498 | struct tcf_ematch * matches; | |
499 | ||
500 | }; | |
501 | ||
502 | /** | |
503 | * struct tcf_ematch_ops - ematch module operations | |
504 | * | |
505 | * @kind: identifier (kind) of this ematch module | |
506 | * @datalen: length of expected configuration data (optional) | |
507 | * @change: called during validation (optional) | |
508 | * @match: called during ematch tree evaluation, must return 1/0 | |
509 | * @destroy: called during destroyage (optional) | |
510 | * @dump: called during dumping process (optional) | |
511 | * @owner: owner, must be set to THIS_MODULE | |
512 | * @link: link to previous/next ematch module (internal use) | |
513 | */ | |
fd2c3ef7 | 514 | struct tcf_ematch_ops { |
1da177e4 LT |
515 | int kind; |
516 | int datalen; | |
82a470f1 | 517 | int (*change)(struct net *net, void *, |
1da177e4 LT |
518 | int, struct tcf_ematch *); |
519 | int (*match)(struct sk_buff *, struct tcf_ematch *, | |
520 | struct tcf_pkt_info *); | |
82a470f1 | 521 | void (*destroy)(struct tcf_ematch *); |
1da177e4 LT |
522 | int (*dump)(struct sk_buff *, struct tcf_ematch *); |
523 | struct module *owner; | |
524 | struct list_head link; | |
525 | }; | |
526 | ||
5c15257f JP |
527 | int tcf_em_register(struct tcf_ematch_ops *); |
528 | void tcf_em_unregister(struct tcf_ematch_ops *); | |
529 | int tcf_em_tree_validate(struct tcf_proto *, struct nlattr *, | |
530 | struct tcf_ematch_tree *); | |
82a470f1 | 531 | void tcf_em_tree_destroy(struct tcf_ematch_tree *); |
5c15257f JP |
532 | int tcf_em_tree_dump(struct sk_buff *, struct tcf_ematch_tree *, int); |
533 | int __tcf_em_tree_match(struct sk_buff *, struct tcf_ematch_tree *, | |
534 | struct tcf_pkt_info *); | |
1da177e4 | 535 | |
1da177e4 LT |
536 | /** |
537 | * tcf_em_tree_match - evaulate an ematch tree | |
538 | * | |
539 | * @skb: socket buffer of the packet in question | |
540 | * @tree: ematch tree to be used for evaluation | |
541 | * @info: packet information examined by classifier | |
542 | * | |
543 | * This function matches @skb against the ematch tree in @tree by going | |
544 | * through all ematches respecting their logic relations returning | |
545 | * as soon as the result is obvious. | |
546 | * | |
547 | * Returns 1 if the ematch tree as-one matches, no ematches are configured | |
548 | * or ematch is not enabled in the kernel, otherwise 0 is returned. | |
549 | */ | |
550 | static inline int tcf_em_tree_match(struct sk_buff *skb, | |
551 | struct tcf_ematch_tree *tree, | |
552 | struct tcf_pkt_info *info) | |
553 | { | |
554 | if (tree->hdr.nmatches) | |
555 | return __tcf_em_tree_match(skb, tree, info); | |
556 | else | |
557 | return 1; | |
558 | } | |
559 | ||
db3d99c0 PM |
560 | #define MODULE_ALIAS_TCF_EMATCH(kind) MODULE_ALIAS("ematch-kind-" __stringify(kind)) |
561 | ||
1da177e4 LT |
562 | #else /* CONFIG_NET_EMATCH */ |
563 | ||
fd2c3ef7 | 564 | struct tcf_ematch_tree { |
1da177e4 LT |
565 | }; |
566 | ||
567 | #define tcf_em_tree_validate(tp, tb, t) ((void)(t), 0) | |
82a470f1 | 568 | #define tcf_em_tree_destroy(t) do { (void)(t); } while(0) |
1da177e4 | 569 | #define tcf_em_tree_dump(skb, t, tlv) (0) |
1da177e4 LT |
570 | #define tcf_em_tree_match(skb, t, info) ((void)(info), 1) |
571 | ||
572 | #endif /* CONFIG_NET_EMATCH */ | |
573 | ||
574 | static inline unsigned char * tcf_get_base_ptr(struct sk_buff *skb, int layer) | |
575 | { | |
576 | switch (layer) { | |
577 | case TCF_LAYER_LINK: | |
d3303a65 | 578 | return skb_mac_header(skb); |
1da177e4 | 579 | case TCF_LAYER_NETWORK: |
d56f90a7 | 580 | return skb_network_header(skb); |
1da177e4 | 581 | case TCF_LAYER_TRANSPORT: |
9c70220b | 582 | return skb_transport_header(skb); |
1da177e4 LT |
583 | } |
584 | ||
585 | return NULL; | |
586 | } | |
587 | ||
eddc9ec5 ACM |
588 | static inline int tcf_valid_offset(const struct sk_buff *skb, |
589 | const unsigned char *ptr, const int len) | |
1da177e4 | 590 | { |
da521b2c DM |
591 | return likely((ptr + len) <= skb_tail_pointer(skb) && |
592 | ptr >= skb->head && | |
593 | (ptr <= (ptr + len))); | |
1da177e4 LT |
594 | } |
595 | ||
596 | #ifdef CONFIG_NET_CLS_IND | |
0eeb8ffc DL |
597 | #include <net/net_namespace.h> |
598 | ||
1da177e4 | 599 | static inline int |
1057c55f AA |
600 | tcf_change_indev(struct net *net, struct nlattr *indev_tlv, |
601 | struct netlink_ext_ack *extack) | |
1da177e4 | 602 | { |
2519a602 WC |
603 | char indev[IFNAMSIZ]; |
604 | struct net_device *dev; | |
605 | ||
1057c55f AA |
606 | if (nla_strlcpy(indev, indev_tlv, IFNAMSIZ) >= IFNAMSIZ) { |
607 | NL_SET_ERR_MSG(extack, "Interface name too long"); | |
1da177e4 | 608 | return -EINVAL; |
1057c55f | 609 | } |
2519a602 WC |
610 | dev = __dev_get_by_name(net, indev); |
611 | if (!dev) | |
612 | return -ENODEV; | |
613 | return dev->ifindex; | |
1da177e4 LT |
614 | } |
615 | ||
2519a602 WC |
616 | static inline bool |
617 | tcf_match_indev(struct sk_buff *skb, int ifindex) | |
1da177e4 | 618 | { |
2519a602 WC |
619 | if (!ifindex) |
620 | return true; | |
621 | if (!skb->skb_iif) | |
622 | return false; | |
623 | return ifindex == skb->skb_iif; | |
1da177e4 LT |
624 | } |
625 | #endif /* CONFIG_NET_CLS_IND */ | |
626 | ||
3a7b6861 PNA |
627 | int tc_setup_flow_action(struct flow_action *flow_action, |
628 | const struct tcf_exts *exts); | |
aeb3fecd CW |
629 | int tc_setup_cb_call(struct tcf_block *block, enum tc_setup_type type, |
630 | void *type_data, bool err_stop); | |
e3ab786b | 631 | unsigned int tcf_exts_num_actions(struct tcf_exts *exts); |
717503b9 | 632 | |
8c4083b3 JP |
633 | enum tc_block_command { |
634 | TC_BLOCK_BIND, | |
635 | TC_BLOCK_UNBIND, | |
636 | }; | |
637 | ||
638 | struct tc_block_offload { | |
639 | enum tc_block_command command; | |
640 | enum tcf_block_binder_type binder_type; | |
641 | struct tcf_block *block; | |
60513bd8 | 642 | struct netlink_ext_ack *extack; |
8c4083b3 JP |
643 | }; |
644 | ||
5fd9fc4e | 645 | struct tc_cls_common_offload { |
5fd9fc4e JP |
646 | u32 chain_index; |
647 | __be16 protocol; | |
d7c1c8d2 | 648 | u32 prio; |
8f0b425a | 649 | struct netlink_ext_ack *extack; |
5fd9fc4e JP |
650 | }; |
651 | ||
a1b7c5fd JF |
652 | struct tc_cls_u32_knode { |
653 | struct tcf_exts *exts; | |
068ceb35 | 654 | struct tcf_result *res; |
e014860e | 655 | struct tc_u32_sel *sel; |
a1b7c5fd JF |
656 | u32 handle; |
657 | u32 val; | |
658 | u32 mask; | |
659 | u32 link_handle; | |
e014860e | 660 | u8 fshift; |
a1b7c5fd JF |
661 | }; |
662 | ||
663 | struct tc_cls_u32_hnode { | |
664 | u32 handle; | |
665 | u32 prio; | |
666 | unsigned int divisor; | |
667 | }; | |
668 | ||
669 | enum tc_clsu32_command { | |
670 | TC_CLSU32_NEW_KNODE, | |
671 | TC_CLSU32_REPLACE_KNODE, | |
672 | TC_CLSU32_DELETE_KNODE, | |
673 | TC_CLSU32_NEW_HNODE, | |
674 | TC_CLSU32_REPLACE_HNODE, | |
675 | TC_CLSU32_DELETE_HNODE, | |
676 | }; | |
677 | ||
678 | struct tc_cls_u32_offload { | |
5fd9fc4e | 679 | struct tc_cls_common_offload common; |
a1b7c5fd JF |
680 | /* knode values */ |
681 | enum tc_clsu32_command command; | |
682 | union { | |
683 | struct tc_cls_u32_knode knode; | |
684 | struct tc_cls_u32_hnode hnode; | |
685 | }; | |
686 | }; | |
687 | ||
7b06e8ae | 688 | static inline bool tc_can_offload(const struct net_device *dev) |
6843e7a2 | 689 | { |
70b5aee4 | 690 | return dev->features & NETIF_F_HW_TC; |
6843e7a2 JF |
691 | } |
692 | ||
f9eda14f QM |
693 | static inline bool tc_can_offload_extack(const struct net_device *dev, |
694 | struct netlink_ext_ack *extack) | |
695 | { | |
696 | bool can = tc_can_offload(dev); | |
697 | ||
698 | if (!can) | |
699 | NL_SET_ERR_MSG(extack, "TC offload is disabled on net device"); | |
700 | ||
701 | return can; | |
702 | } | |
703 | ||
878db9f0 JK |
704 | static inline bool |
705 | tc_cls_can_offload_and_chain0(const struct net_device *dev, | |
706 | struct tc_cls_common_offload *common) | |
707 | { | |
708 | if (!tc_can_offload_extack(dev, common->extack)) | |
709 | return false; | |
710 | if (common->chain_index) { | |
711 | NL_SET_ERR_MSG(common->extack, | |
712 | "Driver supports only offload of chain 0"); | |
713 | return false; | |
714 | } | |
715 | return true; | |
716 | } | |
717 | ||
55330f05 HHZ |
718 | static inline bool tc_skip_hw(u32 flags) |
719 | { | |
720 | return (flags & TCA_CLS_FLAGS_SKIP_HW) ? true : false; | |
721 | } | |
722 | ||
d34e3e18 SS |
723 | static inline bool tc_skip_sw(u32 flags) |
724 | { | |
725 | return (flags & TCA_CLS_FLAGS_SKIP_SW) ? true : false; | |
726 | } | |
727 | ||
728 | /* SKIP_HW and SKIP_SW are mutually exclusive flags. */ | |
729 | static inline bool tc_flags_valid(u32 flags) | |
730 | { | |
81c7288b MRL |
731 | if (flags & ~(TCA_CLS_FLAGS_SKIP_HW | TCA_CLS_FLAGS_SKIP_SW | |
732 | TCA_CLS_FLAGS_VERBOSE)) | |
d34e3e18 SS |
733 | return false; |
734 | ||
81c7288b | 735 | flags &= TCA_CLS_FLAGS_SKIP_HW | TCA_CLS_FLAGS_SKIP_SW; |
d34e3e18 SS |
736 | if (!(flags ^ (TCA_CLS_FLAGS_SKIP_HW | TCA_CLS_FLAGS_SKIP_SW))) |
737 | return false; | |
738 | ||
739 | return true; | |
740 | } | |
741 | ||
e696028a OG |
742 | static inline bool tc_in_hw(u32 flags) |
743 | { | |
744 | return (flags & TCA_CLS_FLAGS_IN_HW) ? true : false; | |
745 | } | |
746 | ||
34832e1c JK |
747 | static inline void |
748 | tc_cls_common_offload_init(struct tc_cls_common_offload *cls_common, | |
749 | const struct tcf_proto *tp, u32 flags, | |
750 | struct netlink_ext_ack *extack) | |
751 | { | |
752 | cls_common->chain_index = tp->chain->index; | |
753 | cls_common->protocol = tp->protocol; | |
754 | cls_common->prio = tp->prio; | |
81c7288b | 755 | if (tc_skip_sw(flags) || flags & TCA_CLS_FLAGS_VERBOSE) |
34832e1c JK |
756 | cls_common->extack = extack; |
757 | } | |
758 | ||
5b33f488 AV |
759 | enum tc_fl_command { |
760 | TC_CLSFLOWER_REPLACE, | |
761 | TC_CLSFLOWER_DESTROY, | |
10cbc684 | 762 | TC_CLSFLOWER_STATS, |
34738452 JP |
763 | TC_CLSFLOWER_TMPLT_CREATE, |
764 | TC_CLSFLOWER_TMPLT_DESTROY, | |
5b33f488 AV |
765 | }; |
766 | ||
767 | struct tc_cls_flower_offload { | |
5fd9fc4e | 768 | struct tc_cls_common_offload common; |
5b33f488 | 769 | enum tc_fl_command command; |
8208d21b | 770 | unsigned long cookie; |
8f256622 | 771 | struct flow_rule *rule; |
3b1903ef | 772 | struct flow_stats stats; |
384c181e | 773 | u32 classid; |
5b33f488 AV |
774 | }; |
775 | ||
8f256622 PNA |
776 | static inline struct flow_rule * |
777 | tc_cls_flower_offload_flow_rule(struct tc_cls_flower_offload *tc_flow_cmd) | |
778 | { | |
779 | return tc_flow_cmd->rule; | |
780 | } | |
781 | ||
b87f7936 YG |
782 | enum tc_matchall_command { |
783 | TC_CLSMATCHALL_REPLACE, | |
784 | TC_CLSMATCHALL_DESTROY, | |
785 | }; | |
786 | ||
787 | struct tc_cls_matchall_offload { | |
5fd9fc4e | 788 | struct tc_cls_common_offload common; |
b87f7936 YG |
789 | enum tc_matchall_command command; |
790 | struct tcf_exts *exts; | |
791 | unsigned long cookie; | |
792 | }; | |
793 | ||
332ae8e2 | 794 | enum tc_clsbpf_command { |
102740bd | 795 | TC_CLSBPF_OFFLOAD, |
68d64063 | 796 | TC_CLSBPF_STATS, |
332ae8e2 JK |
797 | }; |
798 | ||
799 | struct tc_cls_bpf_offload { | |
5fd9fc4e | 800 | struct tc_cls_common_offload common; |
332ae8e2 JK |
801 | enum tc_clsbpf_command command; |
802 | struct tcf_exts *exts; | |
803 | struct bpf_prog *prog; | |
102740bd | 804 | struct bpf_prog *oldprog; |
332ae8e2 JK |
805 | const char *name; |
806 | bool exts_integrated; | |
807 | }; | |
808 | ||
4e8b86c0 AN |
809 | struct tc_mqprio_qopt_offload { |
810 | /* struct tc_mqprio_qopt must always be the first element */ | |
811 | struct tc_mqprio_qopt qopt; | |
812 | u16 mode; | |
813 | u16 shaper; | |
814 | u32 flags; | |
815 | u64 min_rate[TC_QOPT_MAX_QUEUE]; | |
816 | u64 max_rate[TC_QOPT_MAX_QUEUE]; | |
817 | }; | |
1045ba77 JHS |
818 | |
819 | /* This structure holds cookie structure that is passed from user | |
820 | * to the kernel for actions and classifiers | |
821 | */ | |
822 | struct tc_cookie { | |
823 | u8 *data; | |
824 | u32 len; | |
eec94fdb | 825 | struct rcu_head rcu; |
1045ba77 | 826 | }; |
602f3baf | 827 | |
f34b4aac NF |
828 | struct tc_qopt_offload_stats { |
829 | struct gnet_stats_basic_packed *bstats; | |
830 | struct gnet_stats_queue *qstats; | |
831 | }; | |
832 | ||
f971b132 JK |
833 | enum tc_mq_command { |
834 | TC_MQ_CREATE, | |
835 | TC_MQ_DESTROY, | |
47c669a4 | 836 | TC_MQ_STATS, |
d577a3d2 JK |
837 | TC_MQ_GRAFT, |
838 | }; | |
839 | ||
840 | struct tc_mq_opt_offload_graft_params { | |
841 | unsigned long queue; | |
842 | u32 child_handle; | |
f971b132 JK |
843 | }; |
844 | ||
845 | struct tc_mq_qopt_offload { | |
846 | enum tc_mq_command command; | |
847 | u32 handle; | |
d577a3d2 JK |
848 | union { |
849 | struct tc_qopt_offload_stats stats; | |
850 | struct tc_mq_opt_offload_graft_params graft_params; | |
851 | }; | |
f971b132 JK |
852 | }; |
853 | ||
602f3baf NF |
854 | enum tc_red_command { |
855 | TC_RED_REPLACE, | |
856 | TC_RED_DESTROY, | |
857 | TC_RED_STATS, | |
858 | TC_RED_XSTATS, | |
bf2a752b | 859 | TC_RED_GRAFT, |
602f3baf NF |
860 | }; |
861 | ||
862 | struct tc_red_qopt_offload_params { | |
863 | u32 min; | |
864 | u32 max; | |
865 | u32 probability; | |
c0b7490b | 866 | u32 limit; |
602f3baf | 867 | bool is_ecn; |
190852a5 | 868 | bool is_harddrop; |
416ef9b1 | 869 | struct gnet_stats_queue *qstats; |
602f3baf | 870 | }; |
602f3baf NF |
871 | |
872 | struct tc_red_qopt_offload { | |
873 | enum tc_red_command command; | |
874 | u32 handle; | |
875 | u32 parent; | |
876 | union { | |
877 | struct tc_red_qopt_offload_params set; | |
f34b4aac | 878 | struct tc_qopt_offload_stats stats; |
602f3baf | 879 | struct red_stats *xstats; |
bf2a752b | 880 | u32 child_handle; |
602f3baf NF |
881 | }; |
882 | }; | |
883 | ||
890d8d23 JK |
884 | enum tc_gred_command { |
885 | TC_GRED_REPLACE, | |
886 | TC_GRED_DESTROY, | |
e49efd52 | 887 | TC_GRED_STATS, |
890d8d23 JK |
888 | }; |
889 | ||
890 | struct tc_gred_vq_qopt_offload_params { | |
891 | bool present; | |
892 | u32 limit; | |
893 | u32 prio; | |
894 | u32 min; | |
895 | u32 max; | |
896 | bool is_ecn; | |
897 | bool is_harddrop; | |
898 | u32 probability; | |
899 | /* Only need backlog, see struct tc_prio_qopt_offload_params */ | |
900 | u32 *backlog; | |
901 | }; | |
902 | ||
903 | struct tc_gred_qopt_offload_params { | |
904 | bool grio_on; | |
905 | bool wred_on; | |
906 | unsigned int dp_cnt; | |
907 | unsigned int dp_def; | |
908 | struct gnet_stats_queue *qstats; | |
909 | struct tc_gred_vq_qopt_offload_params tab[MAX_DPs]; | |
910 | }; | |
911 | ||
e49efd52 JK |
912 | struct tc_gred_qopt_offload_stats { |
913 | struct gnet_stats_basic_packed bstats[MAX_DPs]; | |
914 | struct gnet_stats_queue qstats[MAX_DPs]; | |
915 | struct red_stats *xstats[MAX_DPs]; | |
916 | }; | |
917 | ||
890d8d23 JK |
918 | struct tc_gred_qopt_offload { |
919 | enum tc_gred_command command; | |
920 | u32 handle; | |
921 | u32 parent; | |
922 | union { | |
923 | struct tc_gred_qopt_offload_params set; | |
e49efd52 | 924 | struct tc_gred_qopt_offload_stats stats; |
890d8d23 JK |
925 | }; |
926 | }; | |
927 | ||
7fdb61b4 NF |
928 | enum tc_prio_command { |
929 | TC_PRIO_REPLACE, | |
930 | TC_PRIO_DESTROY, | |
931 | TC_PRIO_STATS, | |
b9c7a7ac | 932 | TC_PRIO_GRAFT, |
7fdb61b4 NF |
933 | }; |
934 | ||
935 | struct tc_prio_qopt_offload_params { | |
936 | int bands; | |
937 | u8 priomap[TC_PRIO_MAX + 1]; | |
938 | /* In case that a prio qdisc is offloaded and now is changed to a | |
939 | * non-offloadedable config, it needs to update the backlog & qlen | |
940 | * values to negate the HW backlog & qlen values (and only them). | |
941 | */ | |
942 | struct gnet_stats_queue *qstats; | |
943 | }; | |
944 | ||
b9c7a7ac NF |
945 | struct tc_prio_qopt_offload_graft_params { |
946 | u8 band; | |
947 | u32 child_handle; | |
948 | }; | |
949 | ||
7fdb61b4 NF |
950 | struct tc_prio_qopt_offload { |
951 | enum tc_prio_command command; | |
952 | u32 handle; | |
953 | u32 parent; | |
954 | union { | |
955 | struct tc_prio_qopt_offload_params replace_params; | |
956 | struct tc_qopt_offload_stats stats; | |
b9c7a7ac | 957 | struct tc_prio_qopt_offload_graft_params graft_params; |
7fdb61b4 NF |
958 | }; |
959 | }; | |
b9c7a7ac | 960 | |
98b0e5f6 JK |
961 | enum tc_root_command { |
962 | TC_ROOT_GRAFT, | |
963 | }; | |
964 | ||
965 | struct tc_root_qopt_offload { | |
966 | enum tc_root_command command; | |
967 | u32 handle; | |
968 | bool ingress; | |
969 | }; | |
970 | ||
1da177e4 | 971 | #endif |