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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> |
a5148626 | 10 | #include <net/net_namespace.h> |
1da177e4 | 11 | |
cd11b164 | 12 | /* TC action not accessible from user space */ |
720f22fe | 13 | #define TC_ACT_CONSUMED (TC_ACT_VALUE_MAX + 1) |
cd11b164 | 14 | |
1da177e4 LT |
15 | /* Basic packet classifier frontend definitions. */ |
16 | ||
fd2c3ef7 | 17 | struct tcf_walker { |
1da177e4 LT |
18 | int stop; |
19 | int skip; | |
20 | int count; | |
6676d5e4 | 21 | bool nonempty; |
01683a14 | 22 | unsigned long cookie; |
8113c095 | 23 | int (*fn)(struct tcf_proto *, void *node, struct tcf_walker *); |
1da177e4 LT |
24 | }; |
25 | ||
5c15257f JP |
26 | int register_tcf_proto_ops(struct tcf_proto_ops *ops); |
27 | int unregister_tcf_proto_ops(struct tcf_proto_ops *ops); | |
1da177e4 | 28 | |
4e95bc26 | 29 | #define tc_block_offload flow_block_offload |
8c4083b3 JP |
30 | |
31 | struct tcf_block_ext_info { | |
32f8c409 | 32 | enum flow_block_binder_type binder_type; |
c7eb7d72 JP |
33 | tcf_chain_head_change_t *chain_head_change; |
34 | void *chain_head_change_priv; | |
48617387 | 35 | u32 block_index; |
8c4083b3 JP |
36 | }; |
37 | ||
acb67442 | 38 | struct tcf_block_cb; |
aaa908ff | 39 | bool tcf_queue_work(struct rcu_work *rwork, work_func_t func); |
acb67442 | 40 | |
8ae70032 | 41 | #ifdef CONFIG_NET_CLS |
1f3ed383 JP |
42 | struct tcf_chain *tcf_chain_get_by_act(struct tcf_block *block, |
43 | u32 chain_index); | |
1f3ed383 | 44 | void tcf_chain_put_by_act(struct tcf_chain *chain); |
bbf73830 VB |
45 | struct tcf_chain *tcf_get_next_chain(struct tcf_block *block, |
46 | struct tcf_chain *chain); | |
fe2923af | 47 | struct tcf_proto *tcf_get_next_proto(struct tcf_chain *chain, |
12db03b6 | 48 | struct tcf_proto *tp, bool rtnl_held); |
f36fe1c4 | 49 | void tcf_block_netif_keep_dst(struct tcf_block *block); |
6529eaba | 50 | int tcf_block_get(struct tcf_block **p_block, |
8d1a77f9 AA |
51 | struct tcf_proto __rcu **p_filter_chain, struct Qdisc *q, |
52 | struct netlink_ext_ack *extack); | |
c7eb7d72 | 53 | int tcf_block_get_ext(struct tcf_block **p_block, struct Qdisc *q, |
8d1a77f9 AA |
54 | struct tcf_block_ext_info *ei, |
55 | struct netlink_ext_ack *extack); | |
6529eaba | 56 | void tcf_block_put(struct tcf_block *block); |
c7eb7d72 | 57 | void tcf_block_put_ext(struct tcf_block *block, struct Qdisc *q, |
8c4083b3 | 58 | struct tcf_block_ext_info *ei); |
44186460 | 59 | |
48617387 JP |
60 | static inline bool tcf_block_shared(struct tcf_block *block) |
61 | { | |
62 | return block->index; | |
63 | } | |
64 | ||
44186460 JP |
65 | static inline struct Qdisc *tcf_block_q(struct tcf_block *block) |
66 | { | |
48617387 | 67 | WARN_ON(tcf_block_shared(block)); |
44186460 JP |
68 | return block->q; |
69 | } | |
70 | ||
acb67442 JP |
71 | void *tcf_block_cb_priv(struct tcf_block_cb *block_cb); |
72 | struct tcf_block_cb *tcf_block_cb_lookup(struct tcf_block *block, | |
73 | tc_setup_cb_t *cb, void *cb_ident); | |
74 | void tcf_block_cb_incref(struct tcf_block_cb *block_cb); | |
75 | unsigned int tcf_block_cb_decref(struct tcf_block_cb *block_cb); | |
76 | struct tcf_block_cb *__tcf_block_cb_register(struct tcf_block *block, | |
77 | tc_setup_cb_t *cb, void *cb_ident, | |
60513bd8 JH |
78 | void *cb_priv, |
79 | struct netlink_ext_ack *extack); | |
acb67442 JP |
80 | int tcf_block_cb_register(struct tcf_block *block, |
81 | tc_setup_cb_t *cb, void *cb_ident, | |
60513bd8 | 82 | void *cb_priv, struct netlink_ext_ack *extack); |
32636742 JH |
83 | void __tcf_block_cb_unregister(struct tcf_block *block, |
84 | struct tcf_block_cb *block_cb); | |
acb67442 JP |
85 | void tcf_block_cb_unregister(struct tcf_block *block, |
86 | tc_setup_cb_t *cb, void *cb_ident); | |
7f76fa36 JH |
87 | int __tc_indr_block_cb_register(struct net_device *dev, void *cb_priv, |
88 | tc_indr_block_bind_cb_t *cb, void *cb_ident); | |
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 | void __tc_indr_block_cb_unregister(struct net_device *dev, | |
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); | |
acb67442 | 95 | |
87d83093 JP |
96 | int tcf_classify(struct sk_buff *skb, const struct tcf_proto *tp, |
97 | struct tcf_result *res, bool compat_mode); | |
98 | ||
8ae70032 | 99 | #else |
88c44a52 PJV |
100 | static inline bool tcf_block_shared(struct tcf_block *block) |
101 | { | |
102 | return false; | |
103 | } | |
104 | ||
6529eaba JP |
105 | static inline |
106 | int tcf_block_get(struct tcf_block **p_block, | |
3c149091 SM |
107 | struct tcf_proto __rcu **p_filter_chain, struct Qdisc *q, |
108 | struct netlink_ext_ack *extack) | |
6529eaba JP |
109 | { |
110 | return 0; | |
111 | } | |
112 | ||
8c4083b3 | 113 | static inline |
c7eb7d72 | 114 | int tcf_block_get_ext(struct tcf_block **p_block, struct Qdisc *q, |
33c30a8b QM |
115 | struct tcf_block_ext_info *ei, |
116 | struct netlink_ext_ack *extack) | |
8c4083b3 JP |
117 | { |
118 | return 0; | |
119 | } | |
120 | ||
6529eaba | 121 | static inline void tcf_block_put(struct tcf_block *block) |
8ae70032 JP |
122 | { |
123 | } | |
87d83093 | 124 | |
8c4083b3 | 125 | static inline |
c7eb7d72 | 126 | void tcf_block_put_ext(struct tcf_block *block, struct Qdisc *q, |
8c4083b3 JP |
127 | struct tcf_block_ext_info *ei) |
128 | { | |
129 | } | |
130 | ||
44186460 JP |
131 | static inline struct Qdisc *tcf_block_q(struct tcf_block *block) |
132 | { | |
133 | return NULL; | |
134 | } | |
135 | ||
acb67442 JP |
136 | static inline |
137 | int tc_setup_cb_block_register(struct tcf_block *block, tc_setup_cb_t *cb, | |
138 | void *cb_priv) | |
139 | { | |
140 | return 0; | |
141 | } | |
142 | ||
143 | static inline | |
144 | void tc_setup_cb_block_unregister(struct tcf_block *block, tc_setup_cb_t *cb, | |
145 | void *cb_priv) | |
146 | { | |
147 | } | |
148 | ||
149 | static inline | |
150 | void *tcf_block_cb_priv(struct tcf_block_cb *block_cb) | |
151 | { | |
152 | return NULL; | |
153 | } | |
154 | ||
155 | static inline | |
156 | struct tcf_block_cb *tcf_block_cb_lookup(struct tcf_block *block, | |
157 | tc_setup_cb_t *cb, void *cb_ident) | |
158 | { | |
159 | return NULL; | |
160 | } | |
161 | ||
162 | static inline | |
163 | void tcf_block_cb_incref(struct tcf_block_cb *block_cb) | |
164 | { | |
165 | } | |
166 | ||
167 | static inline | |
168 | unsigned int tcf_block_cb_decref(struct tcf_block_cb *block_cb) | |
169 | { | |
170 | return 0; | |
171 | } | |
172 | ||
173 | static inline | |
174 | struct tcf_block_cb *__tcf_block_cb_register(struct tcf_block *block, | |
175 | tc_setup_cb_t *cb, void *cb_ident, | |
60513bd8 JH |
176 | void *cb_priv, |
177 | struct netlink_ext_ack *extack) | |
acb67442 JP |
178 | { |
179 | return NULL; | |
180 | } | |
181 | ||
182 | static inline | |
183 | int tcf_block_cb_register(struct tcf_block *block, | |
184 | tc_setup_cb_t *cb, void *cb_ident, | |
60513bd8 | 185 | void *cb_priv, struct netlink_ext_ack *extack) |
acb67442 JP |
186 | { |
187 | return 0; | |
188 | } | |
189 | ||
190 | static inline | |
32636742 JH |
191 | void __tcf_block_cb_unregister(struct tcf_block *block, |
192 | struct tcf_block_cb *block_cb) | |
acb67442 JP |
193 | { |
194 | } | |
195 | ||
196 | static inline | |
197 | void tcf_block_cb_unregister(struct tcf_block *block, | |
198 | tc_setup_cb_t *cb, void *cb_ident) | |
199 | { | |
200 | } | |
201 | ||
7f76fa36 JH |
202 | static inline |
203 | int __tc_indr_block_cb_register(struct net_device *dev, void *cb_priv, | |
204 | tc_indr_block_bind_cb_t *cb, void *cb_ident) | |
205 | { | |
206 | return 0; | |
207 | } | |
208 | ||
209 | static inline | |
210 | int tc_indr_block_cb_register(struct net_device *dev, void *cb_priv, | |
211 | tc_indr_block_bind_cb_t *cb, void *cb_ident) | |
212 | { | |
213 | return 0; | |
214 | } | |
215 | ||
216 | static inline | |
217 | void __tc_indr_block_cb_unregister(struct net_device *dev, | |
218 | tc_indr_block_bind_cb_t *cb, void *cb_ident) | |
219 | { | |
220 | } | |
221 | ||
222 | static inline | |
223 | void tc_indr_block_cb_unregister(struct net_device *dev, | |
224 | tc_indr_block_bind_cb_t *cb, void *cb_ident) | |
225 | { | |
226 | } | |
227 | ||
87d83093 JP |
228 | static inline int tcf_classify(struct sk_buff *skb, const struct tcf_proto *tp, |
229 | struct tcf_result *res, bool compat_mode) | |
230 | { | |
231 | return TC_ACT_UNSPEC; | |
232 | } | |
8ae70032 | 233 | #endif |
cf1facda | 234 | |
1da177e4 LT |
235 | static inline unsigned long |
236 | __cls_set_class(unsigned long *clp, unsigned long cl) | |
237 | { | |
a0efb80c | 238 | return xchg(clp, cl); |
1da177e4 LT |
239 | } |
240 | ||
241 | static inline unsigned long | |
34e3759c | 242 | cls_set_class(struct Qdisc *q, unsigned long *clp, unsigned long cl) |
1da177e4 LT |
243 | { |
244 | unsigned long old_cl; | |
34e3759c JP |
245 | |
246 | sch_tree_lock(q); | |
1da177e4 | 247 | old_cl = __cls_set_class(clp, cl); |
34e3759c | 248 | sch_tree_unlock(q); |
1da177e4 LT |
249 | return old_cl; |
250 | } | |
251 | ||
252 | static inline void | |
253 | tcf_bind_filter(struct tcf_proto *tp, struct tcf_result *r, unsigned long base) | |
254 | { | |
34e3759c | 255 | struct Qdisc *q = tp->chain->block->q; |
1da177e4 LT |
256 | unsigned long cl; |
257 | ||
34e3759c JP |
258 | /* Check q as it is not set for shared blocks. In that case, |
259 | * setting class is not supported. | |
260 | */ | |
261 | if (!q) | |
262 | return; | |
263 | cl = q->ops->cl_ops->bind_tcf(q, base, r->classid); | |
264 | cl = cls_set_class(q, &r->class, cl); | |
1da177e4 | 265 | if (cl) |
34e3759c | 266 | q->ops->cl_ops->unbind_tcf(q, cl); |
1da177e4 LT |
267 | } |
268 | ||
269 | static inline void | |
270 | tcf_unbind_filter(struct tcf_proto *tp, struct tcf_result *r) | |
271 | { | |
34e3759c | 272 | struct Qdisc *q = tp->chain->block->q; |
1da177e4 LT |
273 | unsigned long cl; |
274 | ||
34e3759c JP |
275 | if (!q) |
276 | return; | |
1da177e4 | 277 | if ((cl = __cls_set_class(&r->class, 0)) != 0) |
34e3759c | 278 | q->ops->cl_ops->unbind_tcf(q, cl); |
1da177e4 LT |
279 | } |
280 | ||
fd2c3ef7 | 281 | struct tcf_exts { |
1da177e4 | 282 | #ifdef CONFIG_NET_CLS_ACT |
33be6271 | 283 | __u32 type; /* for backward compat(TCA_OLD_COMPAT) */ |
22dc13c8 WC |
284 | int nr_actions; |
285 | struct tc_action **actions; | |
e4b95c41 | 286 | struct net *net; |
1da177e4 | 287 | #endif |
5da57f42 WC |
288 | /* Map to export classifier specific extension TLV types to the |
289 | * generic extensions API. Unsupported extensions must be set to 0. | |
290 | */ | |
1da177e4 LT |
291 | int action; |
292 | int police; | |
293 | }; | |
294 | ||
14215108 CW |
295 | static inline int tcf_exts_init(struct tcf_exts *exts, struct net *net, |
296 | int action, int police) | |
33be6271 WC |
297 | { |
298 | #ifdef CONFIG_NET_CLS_ACT | |
5da57f42 | 299 | exts->type = 0; |
22dc13c8 | 300 | exts->nr_actions = 0; |
14215108 | 301 | exts->net = net; |
22dc13c8 WC |
302 | exts->actions = kcalloc(TCA_ACT_MAX_PRIO, sizeof(struct tc_action *), |
303 | GFP_KERNEL); | |
b9a24bb7 WC |
304 | if (!exts->actions) |
305 | return -ENOMEM; | |
33be6271 | 306 | #endif |
5da57f42 WC |
307 | exts->action = action; |
308 | exts->police = police; | |
b9a24bb7 | 309 | return 0; |
33be6271 WC |
310 | } |
311 | ||
e4b95c41 CW |
312 | /* Return false if the netns is being destroyed in cleanup_net(). Callers |
313 | * need to do cleanup synchronously in this case, otherwise may race with | |
314 | * tc_action_net_exit(). Return true for other cases. | |
315 | */ | |
316 | static inline bool tcf_exts_get_net(struct tcf_exts *exts) | |
317 | { | |
318 | #ifdef CONFIG_NET_CLS_ACT | |
319 | exts->net = maybe_get_net(exts->net); | |
320 | return exts->net != NULL; | |
321 | #else | |
322 | return true; | |
323 | #endif | |
324 | } | |
325 | ||
326 | static inline void tcf_exts_put_net(struct tcf_exts *exts) | |
327 | { | |
328 | #ifdef CONFIG_NET_CLS_ACT | |
329 | if (exts->net) | |
330 | put_net(exts->net); | |
331 | #endif | |
332 | } | |
333 | ||
22dc13c8 | 334 | #ifdef CONFIG_NET_CLS_ACT |
244cd96a CW |
335 | #define tcf_exts_for_each_action(i, a, exts) \ |
336 | for (i = 0; i < TCA_ACT_MAX_PRIO && ((a) = (exts)->actions[i]); i++) | |
337 | #else | |
338 | #define tcf_exts_for_each_action(i, a, exts) \ | |
191672ca | 339 | for (; 0; (void)(i), (void)(a), (void)(exts)) |
22dc13c8 | 340 | #endif |
22dc13c8 | 341 | |
d897a638 JK |
342 | static inline void |
343 | tcf_exts_stats_update(const struct tcf_exts *exts, | |
344 | u64 bytes, u64 packets, u64 lastuse) | |
345 | { | |
346 | #ifdef CONFIG_NET_CLS_ACT | |
347 | int i; | |
348 | ||
349 | preempt_disable(); | |
350 | ||
351 | for (i = 0; i < exts->nr_actions; i++) { | |
352 | struct tc_action *a = exts->actions[i]; | |
353 | ||
28169aba | 354 | tcf_action_stats_update(a, bytes, packets, lastuse, true); |
d897a638 JK |
355 | } |
356 | ||
357 | preempt_enable(); | |
358 | #endif | |
359 | } | |
360 | ||
3bcc0cec JP |
361 | /** |
362 | * tcf_exts_has_actions - check if at least one action is present | |
363 | * @exts: tc filter extensions handle | |
364 | * | |
365 | * Returns true if at least one action is present. | |
366 | */ | |
367 | static inline bool tcf_exts_has_actions(struct tcf_exts *exts) | |
368 | { | |
2734437e | 369 | #ifdef CONFIG_NET_CLS_ACT |
3bcc0cec JP |
370 | return exts->nr_actions; |
371 | #else | |
372 | return false; | |
373 | #endif | |
374 | } | |
2734437e | 375 | |
af69afc5 JP |
376 | /** |
377 | * tcf_exts_exec - execute tc filter extensions | |
378 | * @skb: socket buffer | |
379 | * @exts: tc filter extensions handle | |
380 | * @res: desired result | |
381 | * | |
af089e70 | 382 | * Executes all configured extensions. Returns TC_ACT_OK on a normal execution, |
af69afc5 JP |
383 | * a negative number if the filter must be considered unmatched or |
384 | * a positive action code (TC_ACT_*) which must be returned to the | |
385 | * underlying layer. | |
386 | */ | |
387 | static inline int | |
388 | tcf_exts_exec(struct sk_buff *skb, struct tcf_exts *exts, | |
389 | struct tcf_result *res) | |
390 | { | |
391 | #ifdef CONFIG_NET_CLS_ACT | |
ec1a9cca | 392 | return tcf_action_exec(skb, exts->actions, exts->nr_actions, res); |
af69afc5 | 393 | #endif |
af089e70 | 394 | return TC_ACT_OK; |
af69afc5 JP |
395 | } |
396 | ||
5c15257f JP |
397 | int tcf_exts_validate(struct net *net, struct tcf_proto *tp, |
398 | struct nlattr **tb, struct nlattr *rate_tlv, | |
ec6743a1 | 399 | struct tcf_exts *exts, bool ovr, bool rtnl_held, |
50a56190 | 400 | struct netlink_ext_ack *extack); |
18d0264f | 401 | void tcf_exts_destroy(struct tcf_exts *exts); |
9b0d4446 | 402 | void tcf_exts_change(struct tcf_exts *dst, struct tcf_exts *src); |
5da57f42 WC |
403 | int tcf_exts_dump(struct sk_buff *skb, struct tcf_exts *exts); |
404 | int tcf_exts_dump_stats(struct sk_buff *skb, struct tcf_exts *exts); | |
1da177e4 LT |
405 | |
406 | /** | |
407 | * struct tcf_pkt_info - packet information | |
408 | */ | |
fd2c3ef7 | 409 | struct tcf_pkt_info { |
1da177e4 LT |
410 | unsigned char * ptr; |
411 | int nexthdr; | |
412 | }; | |
413 | ||
414 | #ifdef CONFIG_NET_EMATCH | |
415 | ||
416 | struct tcf_ematch_ops; | |
417 | ||
418 | /** | |
419 | * struct tcf_ematch - extended match (ematch) | |
420 | * | |
421 | * @matchid: identifier to allow userspace to reidentify a match | |
422 | * @flags: flags specifying attributes and the relation to other matches | |
423 | * @ops: the operations lookup table of the corresponding ematch module | |
424 | * @datalen: length of the ematch specific configuration data | |
425 | * @data: ematch specific data | |
426 | */ | |
fd2c3ef7 | 427 | struct tcf_ematch { |
1da177e4 LT |
428 | struct tcf_ematch_ops * ops; |
429 | unsigned long data; | |
430 | unsigned int datalen; | |
431 | u16 matchid; | |
432 | u16 flags; | |
82a470f1 | 433 | struct net *net; |
1da177e4 LT |
434 | }; |
435 | ||
436 | static inline int tcf_em_is_container(struct tcf_ematch *em) | |
437 | { | |
438 | return !em->ops; | |
439 | } | |
440 | ||
441 | static inline int tcf_em_is_simple(struct tcf_ematch *em) | |
442 | { | |
443 | return em->flags & TCF_EM_SIMPLE; | |
444 | } | |
445 | ||
446 | static inline int tcf_em_is_inverted(struct tcf_ematch *em) | |
447 | { | |
448 | return em->flags & TCF_EM_INVERT; | |
449 | } | |
450 | ||
451 | static inline int tcf_em_last_match(struct tcf_ematch *em) | |
452 | { | |
453 | return (em->flags & TCF_EM_REL_MASK) == TCF_EM_REL_END; | |
454 | } | |
455 | ||
456 | static inline int tcf_em_early_end(struct tcf_ematch *em, int result) | |
457 | { | |
458 | if (tcf_em_last_match(em)) | |
459 | return 1; | |
460 | ||
461 | if (result == 0 && em->flags & TCF_EM_REL_AND) | |
462 | return 1; | |
463 | ||
464 | if (result != 0 && em->flags & TCF_EM_REL_OR) | |
465 | return 1; | |
466 | ||
467 | return 0; | |
468 | } | |
469 | ||
470 | /** | |
471 | * struct tcf_ematch_tree - ematch tree handle | |
472 | * | |
473 | * @hdr: ematch tree header supplied by userspace | |
474 | * @matches: array of ematches | |
475 | */ | |
fd2c3ef7 | 476 | struct tcf_ematch_tree { |
1da177e4 LT |
477 | struct tcf_ematch_tree_hdr hdr; |
478 | struct tcf_ematch * matches; | |
479 | ||
480 | }; | |
481 | ||
482 | /** | |
483 | * struct tcf_ematch_ops - ematch module operations | |
484 | * | |
485 | * @kind: identifier (kind) of this ematch module | |
486 | * @datalen: length of expected configuration data (optional) | |
487 | * @change: called during validation (optional) | |
488 | * @match: called during ematch tree evaluation, must return 1/0 | |
489 | * @destroy: called during destroyage (optional) | |
490 | * @dump: called during dumping process (optional) | |
491 | * @owner: owner, must be set to THIS_MODULE | |
492 | * @link: link to previous/next ematch module (internal use) | |
493 | */ | |
fd2c3ef7 | 494 | struct tcf_ematch_ops { |
1da177e4 LT |
495 | int kind; |
496 | int datalen; | |
82a470f1 | 497 | int (*change)(struct net *net, void *, |
1da177e4 LT |
498 | int, struct tcf_ematch *); |
499 | int (*match)(struct sk_buff *, struct tcf_ematch *, | |
500 | struct tcf_pkt_info *); | |
82a470f1 | 501 | void (*destroy)(struct tcf_ematch *); |
1da177e4 LT |
502 | int (*dump)(struct sk_buff *, struct tcf_ematch *); |
503 | struct module *owner; | |
504 | struct list_head link; | |
505 | }; | |
506 | ||
5c15257f JP |
507 | int tcf_em_register(struct tcf_ematch_ops *); |
508 | void tcf_em_unregister(struct tcf_ematch_ops *); | |
509 | int tcf_em_tree_validate(struct tcf_proto *, struct nlattr *, | |
510 | struct tcf_ematch_tree *); | |
82a470f1 | 511 | void tcf_em_tree_destroy(struct tcf_ematch_tree *); |
5c15257f JP |
512 | int tcf_em_tree_dump(struct sk_buff *, struct tcf_ematch_tree *, int); |
513 | int __tcf_em_tree_match(struct sk_buff *, struct tcf_ematch_tree *, | |
514 | struct tcf_pkt_info *); | |
1da177e4 | 515 | |
1da177e4 LT |
516 | /** |
517 | * tcf_em_tree_match - evaulate an ematch tree | |
518 | * | |
519 | * @skb: socket buffer of the packet in question | |
520 | * @tree: ematch tree to be used for evaluation | |
521 | * @info: packet information examined by classifier | |
522 | * | |
523 | * This function matches @skb against the ematch tree in @tree by going | |
524 | * through all ematches respecting their logic relations returning | |
525 | * as soon as the result is obvious. | |
526 | * | |
527 | * Returns 1 if the ematch tree as-one matches, no ematches are configured | |
528 | * or ematch is not enabled in the kernel, otherwise 0 is returned. | |
529 | */ | |
530 | static inline int tcf_em_tree_match(struct sk_buff *skb, | |
531 | struct tcf_ematch_tree *tree, | |
532 | struct tcf_pkt_info *info) | |
533 | { | |
534 | if (tree->hdr.nmatches) | |
535 | return __tcf_em_tree_match(skb, tree, info); | |
536 | else | |
537 | return 1; | |
538 | } | |
539 | ||
db3d99c0 PM |
540 | #define MODULE_ALIAS_TCF_EMATCH(kind) MODULE_ALIAS("ematch-kind-" __stringify(kind)) |
541 | ||
1da177e4 LT |
542 | #else /* CONFIG_NET_EMATCH */ |
543 | ||
fd2c3ef7 | 544 | struct tcf_ematch_tree { |
1da177e4 LT |
545 | }; |
546 | ||
547 | #define tcf_em_tree_validate(tp, tb, t) ((void)(t), 0) | |
82a470f1 | 548 | #define tcf_em_tree_destroy(t) do { (void)(t); } while(0) |
1da177e4 | 549 | #define tcf_em_tree_dump(skb, t, tlv) (0) |
1da177e4 LT |
550 | #define tcf_em_tree_match(skb, t, info) ((void)(info), 1) |
551 | ||
552 | #endif /* CONFIG_NET_EMATCH */ | |
553 | ||
554 | static inline unsigned char * tcf_get_base_ptr(struct sk_buff *skb, int layer) | |
555 | { | |
556 | switch (layer) { | |
557 | case TCF_LAYER_LINK: | |
d3303a65 | 558 | return skb_mac_header(skb); |
1da177e4 | 559 | case TCF_LAYER_NETWORK: |
d56f90a7 | 560 | return skb_network_header(skb); |
1da177e4 | 561 | case TCF_LAYER_TRANSPORT: |
9c70220b | 562 | return skb_transport_header(skb); |
1da177e4 LT |
563 | } |
564 | ||
565 | return NULL; | |
566 | } | |
567 | ||
eddc9ec5 ACM |
568 | static inline int tcf_valid_offset(const struct sk_buff *skb, |
569 | const unsigned char *ptr, const int len) | |
1da177e4 | 570 | { |
da521b2c DM |
571 | return likely((ptr + len) <= skb_tail_pointer(skb) && |
572 | ptr >= skb->head && | |
573 | (ptr <= (ptr + len))); | |
1da177e4 LT |
574 | } |
575 | ||
1da177e4 | 576 | static inline int |
1057c55f AA |
577 | tcf_change_indev(struct net *net, struct nlattr *indev_tlv, |
578 | struct netlink_ext_ack *extack) | |
1da177e4 | 579 | { |
2519a602 WC |
580 | char indev[IFNAMSIZ]; |
581 | struct net_device *dev; | |
582 | ||
1057c55f AA |
583 | if (nla_strlcpy(indev, indev_tlv, IFNAMSIZ) >= IFNAMSIZ) { |
584 | NL_SET_ERR_MSG(extack, "Interface name too long"); | |
1da177e4 | 585 | return -EINVAL; |
1057c55f | 586 | } |
2519a602 WC |
587 | dev = __dev_get_by_name(net, indev); |
588 | if (!dev) | |
589 | return -ENODEV; | |
590 | return dev->ifindex; | |
1da177e4 LT |
591 | } |
592 | ||
2519a602 WC |
593 | static inline bool |
594 | tcf_match_indev(struct sk_buff *skb, int ifindex) | |
1da177e4 | 595 | { |
2519a602 WC |
596 | if (!ifindex) |
597 | return true; | |
598 | if (!skb->skb_iif) | |
599 | return false; | |
600 | return ifindex == skb->skb_iif; | |
1da177e4 | 601 | } |
1da177e4 | 602 | |
3a7b6861 PNA |
603 | int tc_setup_flow_action(struct flow_action *flow_action, |
604 | const struct tcf_exts *exts); | |
aeb3fecd CW |
605 | int tc_setup_cb_call(struct tcf_block *block, enum tc_setup_type type, |
606 | void *type_data, bool err_stop); | |
e3ab786b | 607 | unsigned int tcf_exts_num_actions(struct tcf_exts *exts); |
717503b9 | 608 | |
5fd9fc4e | 609 | struct tc_cls_common_offload { |
5fd9fc4e JP |
610 | u32 chain_index; |
611 | __be16 protocol; | |
d7c1c8d2 | 612 | u32 prio; |
8f0b425a | 613 | struct netlink_ext_ack *extack; |
5fd9fc4e JP |
614 | }; |
615 | ||
a1b7c5fd JF |
616 | struct tc_cls_u32_knode { |
617 | struct tcf_exts *exts; | |
068ceb35 | 618 | struct tcf_result *res; |
e014860e | 619 | struct tc_u32_sel *sel; |
a1b7c5fd JF |
620 | u32 handle; |
621 | u32 val; | |
622 | u32 mask; | |
623 | u32 link_handle; | |
e014860e | 624 | u8 fshift; |
a1b7c5fd JF |
625 | }; |
626 | ||
627 | struct tc_cls_u32_hnode { | |
628 | u32 handle; | |
629 | u32 prio; | |
630 | unsigned int divisor; | |
631 | }; | |
632 | ||
633 | enum tc_clsu32_command { | |
634 | TC_CLSU32_NEW_KNODE, | |
635 | TC_CLSU32_REPLACE_KNODE, | |
636 | TC_CLSU32_DELETE_KNODE, | |
637 | TC_CLSU32_NEW_HNODE, | |
638 | TC_CLSU32_REPLACE_HNODE, | |
639 | TC_CLSU32_DELETE_HNODE, | |
640 | }; | |
641 | ||
642 | struct tc_cls_u32_offload { | |
5fd9fc4e | 643 | struct tc_cls_common_offload common; |
a1b7c5fd JF |
644 | /* knode values */ |
645 | enum tc_clsu32_command command; | |
646 | union { | |
647 | struct tc_cls_u32_knode knode; | |
648 | struct tc_cls_u32_hnode hnode; | |
649 | }; | |
650 | }; | |
651 | ||
7b06e8ae | 652 | static inline bool tc_can_offload(const struct net_device *dev) |
6843e7a2 | 653 | { |
70b5aee4 | 654 | return dev->features & NETIF_F_HW_TC; |
6843e7a2 JF |
655 | } |
656 | ||
f9eda14f QM |
657 | static inline bool tc_can_offload_extack(const struct net_device *dev, |
658 | struct netlink_ext_ack *extack) | |
659 | { | |
660 | bool can = tc_can_offload(dev); | |
661 | ||
662 | if (!can) | |
663 | NL_SET_ERR_MSG(extack, "TC offload is disabled on net device"); | |
664 | ||
665 | return can; | |
666 | } | |
667 | ||
878db9f0 JK |
668 | static inline bool |
669 | tc_cls_can_offload_and_chain0(const struct net_device *dev, | |
670 | struct tc_cls_common_offload *common) | |
671 | { | |
672 | if (!tc_can_offload_extack(dev, common->extack)) | |
673 | return false; | |
674 | if (common->chain_index) { | |
675 | NL_SET_ERR_MSG(common->extack, | |
676 | "Driver supports only offload of chain 0"); | |
677 | return false; | |
678 | } | |
679 | return true; | |
680 | } | |
681 | ||
55330f05 HHZ |
682 | static inline bool tc_skip_hw(u32 flags) |
683 | { | |
684 | return (flags & TCA_CLS_FLAGS_SKIP_HW) ? true : false; | |
685 | } | |
686 | ||
d34e3e18 SS |
687 | static inline bool tc_skip_sw(u32 flags) |
688 | { | |
689 | return (flags & TCA_CLS_FLAGS_SKIP_SW) ? true : false; | |
690 | } | |
691 | ||
692 | /* SKIP_HW and SKIP_SW are mutually exclusive flags. */ | |
693 | static inline bool tc_flags_valid(u32 flags) | |
694 | { | |
81c7288b MRL |
695 | if (flags & ~(TCA_CLS_FLAGS_SKIP_HW | TCA_CLS_FLAGS_SKIP_SW | |
696 | TCA_CLS_FLAGS_VERBOSE)) | |
d34e3e18 SS |
697 | return false; |
698 | ||
81c7288b | 699 | flags &= TCA_CLS_FLAGS_SKIP_HW | TCA_CLS_FLAGS_SKIP_SW; |
d34e3e18 SS |
700 | if (!(flags ^ (TCA_CLS_FLAGS_SKIP_HW | TCA_CLS_FLAGS_SKIP_SW))) |
701 | return false; | |
702 | ||
703 | return true; | |
704 | } | |
705 | ||
e696028a OG |
706 | static inline bool tc_in_hw(u32 flags) |
707 | { | |
708 | return (flags & TCA_CLS_FLAGS_IN_HW) ? true : false; | |
709 | } | |
710 | ||
34832e1c JK |
711 | static inline void |
712 | tc_cls_common_offload_init(struct tc_cls_common_offload *cls_common, | |
713 | const struct tcf_proto *tp, u32 flags, | |
714 | struct netlink_ext_ack *extack) | |
715 | { | |
716 | cls_common->chain_index = tp->chain->index; | |
717 | cls_common->protocol = tp->protocol; | |
718 | cls_common->prio = tp->prio; | |
81c7288b | 719 | if (tc_skip_sw(flags) || flags & TCA_CLS_FLAGS_VERBOSE) |
34832e1c JK |
720 | cls_common->extack = extack; |
721 | } | |
722 | ||
5b33f488 AV |
723 | enum tc_fl_command { |
724 | TC_CLSFLOWER_REPLACE, | |
725 | TC_CLSFLOWER_DESTROY, | |
10cbc684 | 726 | TC_CLSFLOWER_STATS, |
34738452 JP |
727 | TC_CLSFLOWER_TMPLT_CREATE, |
728 | TC_CLSFLOWER_TMPLT_DESTROY, | |
5b33f488 AV |
729 | }; |
730 | ||
731 | struct tc_cls_flower_offload { | |
5fd9fc4e | 732 | struct tc_cls_common_offload common; |
5b33f488 | 733 | enum tc_fl_command command; |
8208d21b | 734 | unsigned long cookie; |
8f256622 | 735 | struct flow_rule *rule; |
3b1903ef | 736 | struct flow_stats stats; |
384c181e | 737 | u32 classid; |
5b33f488 AV |
738 | }; |
739 | ||
8f256622 PNA |
740 | static inline struct flow_rule * |
741 | tc_cls_flower_offload_flow_rule(struct tc_cls_flower_offload *tc_flow_cmd) | |
742 | { | |
743 | return tc_flow_cmd->rule; | |
744 | } | |
745 | ||
b87f7936 YG |
746 | enum tc_matchall_command { |
747 | TC_CLSMATCHALL_REPLACE, | |
748 | TC_CLSMATCHALL_DESTROY, | |
b7fe4ab8 | 749 | TC_CLSMATCHALL_STATS, |
b87f7936 YG |
750 | }; |
751 | ||
752 | struct tc_cls_matchall_offload { | |
5fd9fc4e | 753 | struct tc_cls_common_offload common; |
b87f7936 | 754 | enum tc_matchall_command command; |
f00cbf19 | 755 | struct flow_rule *rule; |
b7fe4ab8 | 756 | struct flow_stats stats; |
b87f7936 YG |
757 | unsigned long cookie; |
758 | }; | |
759 | ||
332ae8e2 | 760 | enum tc_clsbpf_command { |
102740bd | 761 | TC_CLSBPF_OFFLOAD, |
68d64063 | 762 | TC_CLSBPF_STATS, |
332ae8e2 JK |
763 | }; |
764 | ||
765 | struct tc_cls_bpf_offload { | |
5fd9fc4e | 766 | struct tc_cls_common_offload common; |
332ae8e2 JK |
767 | enum tc_clsbpf_command command; |
768 | struct tcf_exts *exts; | |
769 | struct bpf_prog *prog; | |
102740bd | 770 | struct bpf_prog *oldprog; |
332ae8e2 JK |
771 | const char *name; |
772 | bool exts_integrated; | |
773 | }; | |
774 | ||
4e8b86c0 AN |
775 | struct tc_mqprio_qopt_offload { |
776 | /* struct tc_mqprio_qopt must always be the first element */ | |
777 | struct tc_mqprio_qopt qopt; | |
778 | u16 mode; | |
779 | u16 shaper; | |
780 | u32 flags; | |
781 | u64 min_rate[TC_QOPT_MAX_QUEUE]; | |
782 | u64 max_rate[TC_QOPT_MAX_QUEUE]; | |
783 | }; | |
1045ba77 JHS |
784 | |
785 | /* This structure holds cookie structure that is passed from user | |
786 | * to the kernel for actions and classifiers | |
787 | */ | |
788 | struct tc_cookie { | |
789 | u8 *data; | |
790 | u32 len; | |
eec94fdb | 791 | struct rcu_head rcu; |
1045ba77 | 792 | }; |
602f3baf | 793 | |
f34b4aac NF |
794 | struct tc_qopt_offload_stats { |
795 | struct gnet_stats_basic_packed *bstats; | |
796 | struct gnet_stats_queue *qstats; | |
797 | }; | |
798 | ||
f971b132 JK |
799 | enum tc_mq_command { |
800 | TC_MQ_CREATE, | |
801 | TC_MQ_DESTROY, | |
47c669a4 | 802 | TC_MQ_STATS, |
d577a3d2 JK |
803 | TC_MQ_GRAFT, |
804 | }; | |
805 | ||
806 | struct tc_mq_opt_offload_graft_params { | |
807 | unsigned long queue; | |
808 | u32 child_handle; | |
f971b132 JK |
809 | }; |
810 | ||
811 | struct tc_mq_qopt_offload { | |
812 | enum tc_mq_command command; | |
813 | u32 handle; | |
d577a3d2 JK |
814 | union { |
815 | struct tc_qopt_offload_stats stats; | |
816 | struct tc_mq_opt_offload_graft_params graft_params; | |
817 | }; | |
f971b132 JK |
818 | }; |
819 | ||
602f3baf NF |
820 | enum tc_red_command { |
821 | TC_RED_REPLACE, | |
822 | TC_RED_DESTROY, | |
823 | TC_RED_STATS, | |
824 | TC_RED_XSTATS, | |
bf2a752b | 825 | TC_RED_GRAFT, |
602f3baf NF |
826 | }; |
827 | ||
828 | struct tc_red_qopt_offload_params { | |
829 | u32 min; | |
830 | u32 max; | |
831 | u32 probability; | |
c0b7490b | 832 | u32 limit; |
602f3baf | 833 | bool is_ecn; |
190852a5 | 834 | bool is_harddrop; |
416ef9b1 | 835 | struct gnet_stats_queue *qstats; |
602f3baf | 836 | }; |
602f3baf NF |
837 | |
838 | struct tc_red_qopt_offload { | |
839 | enum tc_red_command command; | |
840 | u32 handle; | |
841 | u32 parent; | |
842 | union { | |
843 | struct tc_red_qopt_offload_params set; | |
f34b4aac | 844 | struct tc_qopt_offload_stats stats; |
602f3baf | 845 | struct red_stats *xstats; |
bf2a752b | 846 | u32 child_handle; |
602f3baf NF |
847 | }; |
848 | }; | |
849 | ||
890d8d23 JK |
850 | enum tc_gred_command { |
851 | TC_GRED_REPLACE, | |
852 | TC_GRED_DESTROY, | |
e49efd52 | 853 | TC_GRED_STATS, |
890d8d23 JK |
854 | }; |
855 | ||
856 | struct tc_gred_vq_qopt_offload_params { | |
857 | bool present; | |
858 | u32 limit; | |
859 | u32 prio; | |
860 | u32 min; | |
861 | u32 max; | |
862 | bool is_ecn; | |
863 | bool is_harddrop; | |
864 | u32 probability; | |
865 | /* Only need backlog, see struct tc_prio_qopt_offload_params */ | |
866 | u32 *backlog; | |
867 | }; | |
868 | ||
869 | struct tc_gred_qopt_offload_params { | |
870 | bool grio_on; | |
871 | bool wred_on; | |
872 | unsigned int dp_cnt; | |
873 | unsigned int dp_def; | |
874 | struct gnet_stats_queue *qstats; | |
875 | struct tc_gred_vq_qopt_offload_params tab[MAX_DPs]; | |
876 | }; | |
877 | ||
e49efd52 JK |
878 | struct tc_gred_qopt_offload_stats { |
879 | struct gnet_stats_basic_packed bstats[MAX_DPs]; | |
880 | struct gnet_stats_queue qstats[MAX_DPs]; | |
881 | struct red_stats *xstats[MAX_DPs]; | |
882 | }; | |
883 | ||
890d8d23 JK |
884 | struct tc_gred_qopt_offload { |
885 | enum tc_gred_command command; | |
886 | u32 handle; | |
887 | u32 parent; | |
888 | union { | |
889 | struct tc_gred_qopt_offload_params set; | |
e49efd52 | 890 | struct tc_gred_qopt_offload_stats stats; |
890d8d23 JK |
891 | }; |
892 | }; | |
893 | ||
7fdb61b4 NF |
894 | enum tc_prio_command { |
895 | TC_PRIO_REPLACE, | |
896 | TC_PRIO_DESTROY, | |
897 | TC_PRIO_STATS, | |
b9c7a7ac | 898 | TC_PRIO_GRAFT, |
7fdb61b4 NF |
899 | }; |
900 | ||
901 | struct tc_prio_qopt_offload_params { | |
902 | int bands; | |
903 | u8 priomap[TC_PRIO_MAX + 1]; | |
904 | /* In case that a prio qdisc is offloaded and now is changed to a | |
905 | * non-offloadedable config, it needs to update the backlog & qlen | |
906 | * values to negate the HW backlog & qlen values (and only them). | |
907 | */ | |
908 | struct gnet_stats_queue *qstats; | |
909 | }; | |
910 | ||
b9c7a7ac NF |
911 | struct tc_prio_qopt_offload_graft_params { |
912 | u8 band; | |
913 | u32 child_handle; | |
914 | }; | |
915 | ||
7fdb61b4 NF |
916 | struct tc_prio_qopt_offload { |
917 | enum tc_prio_command command; | |
918 | u32 handle; | |
919 | u32 parent; | |
920 | union { | |
921 | struct tc_prio_qopt_offload_params replace_params; | |
922 | struct tc_qopt_offload_stats stats; | |
b9c7a7ac | 923 | struct tc_prio_qopt_offload_graft_params graft_params; |
7fdb61b4 NF |
924 | }; |
925 | }; | |
b9c7a7ac | 926 | |
98b0e5f6 JK |
927 | enum tc_root_command { |
928 | TC_ROOT_GRAFT, | |
929 | }; | |
930 | ||
931 | struct tc_root_qopt_offload { | |
932 | enum tc_root_command command; | |
933 | u32 handle; | |
934 | bool ingress; | |
935 | }; | |
936 | ||
1da177e4 | 937 | #endif |