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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; | |
6676d5e4 | 20 | bool nonempty; |
01683a14 | 21 | unsigned long cookie; |
8113c095 | 22 | int (*fn)(struct tcf_proto *, void *node, struct tcf_walker *); |
1da177e4 LT |
23 | }; |
24 | ||
5c15257f JP |
25 | int register_tcf_proto_ops(struct tcf_proto_ops *ops); |
26 | int unregister_tcf_proto_ops(struct tcf_proto_ops *ops); | |
1da177e4 | 27 | |
8c4083b3 JP |
28 | enum tcf_block_binder_type { |
29 | TCF_BLOCK_BINDER_TYPE_UNSPEC, | |
6e40cf2d JP |
30 | TCF_BLOCK_BINDER_TYPE_CLSACT_INGRESS, |
31 | TCF_BLOCK_BINDER_TYPE_CLSACT_EGRESS, | |
8c4083b3 JP |
32 | }; |
33 | ||
34 | struct tcf_block_ext_info { | |
35 | enum tcf_block_binder_type binder_type; | |
c7eb7d72 JP |
36 | tcf_chain_head_change_t *chain_head_change; |
37 | void *chain_head_change_priv; | |
48617387 | 38 | u32 block_index; |
8c4083b3 JP |
39 | }; |
40 | ||
acb67442 | 41 | struct tcf_block_cb; |
aaa908ff | 42 | bool tcf_queue_work(struct rcu_work *rwork, work_func_t func); |
acb67442 | 43 | |
8ae70032 | 44 | #ifdef CONFIG_NET_CLS |
1f3ed383 JP |
45 | struct tcf_chain *tcf_chain_get_by_act(struct tcf_block *block, |
46 | u32 chain_index); | |
1f3ed383 | 47 | void tcf_chain_put_by_act(struct tcf_chain *chain); |
bbf73830 VB |
48 | struct tcf_chain *tcf_get_next_chain(struct tcf_block *block, |
49 | struct tcf_chain *chain); | |
fe2923af | 50 | struct tcf_proto *tcf_get_next_proto(struct tcf_chain *chain, |
12db03b6 | 51 | struct tcf_proto *tp, bool rtnl_held); |
f36fe1c4 | 52 | void tcf_block_netif_keep_dst(struct tcf_block *block); |
6529eaba | 53 | int tcf_block_get(struct tcf_block **p_block, |
8d1a77f9 AA |
54 | struct tcf_proto __rcu **p_filter_chain, struct Qdisc *q, |
55 | struct netlink_ext_ack *extack); | |
c7eb7d72 | 56 | int tcf_block_get_ext(struct tcf_block **p_block, struct Qdisc *q, |
8d1a77f9 AA |
57 | struct tcf_block_ext_info *ei, |
58 | struct netlink_ext_ack *extack); | |
6529eaba | 59 | void tcf_block_put(struct tcf_block *block); |
c7eb7d72 | 60 | void tcf_block_put_ext(struct tcf_block *block, struct Qdisc *q, |
8c4083b3 | 61 | struct tcf_block_ext_info *ei); |
44186460 | 62 | |
48617387 JP |
63 | static inline bool tcf_block_shared(struct tcf_block *block) |
64 | { | |
65 | return block->index; | |
66 | } | |
67 | ||
44186460 JP |
68 | static inline struct Qdisc *tcf_block_q(struct tcf_block *block) |
69 | { | |
48617387 | 70 | WARN_ON(tcf_block_shared(block)); |
44186460 JP |
71 | return block->q; |
72 | } | |
73 | ||
acb67442 JP |
74 | void *tcf_block_cb_priv(struct tcf_block_cb *block_cb); |
75 | struct tcf_block_cb *tcf_block_cb_lookup(struct tcf_block *block, | |
76 | tc_setup_cb_t *cb, void *cb_ident); | |
77 | void tcf_block_cb_incref(struct tcf_block_cb *block_cb); | |
78 | unsigned int tcf_block_cb_decref(struct tcf_block_cb *block_cb); | |
79 | struct tcf_block_cb *__tcf_block_cb_register(struct tcf_block *block, | |
80 | tc_setup_cb_t *cb, void *cb_ident, | |
60513bd8 JH |
81 | void *cb_priv, |
82 | struct netlink_ext_ack *extack); | |
acb67442 JP |
83 | int tcf_block_cb_register(struct tcf_block *block, |
84 | tc_setup_cb_t *cb, void *cb_ident, | |
60513bd8 | 85 | void *cb_priv, struct netlink_ext_ack *extack); |
32636742 JH |
86 | void __tcf_block_cb_unregister(struct tcf_block *block, |
87 | struct tcf_block_cb *block_cb); | |
acb67442 JP |
88 | void tcf_block_cb_unregister(struct tcf_block *block, |
89 | tc_setup_cb_t *cb, void *cb_ident); | |
7f76fa36 JH |
90 | int __tc_indr_block_cb_register(struct net_device *dev, void *cb_priv, |
91 | tc_indr_block_bind_cb_t *cb, void *cb_ident); | |
92 | int tc_indr_block_cb_register(struct net_device *dev, void *cb_priv, | |
93 | tc_indr_block_bind_cb_t *cb, void *cb_ident); | |
94 | void __tc_indr_block_cb_unregister(struct net_device *dev, | |
95 | tc_indr_block_bind_cb_t *cb, void *cb_ident); | |
96 | void tc_indr_block_cb_unregister(struct net_device *dev, | |
97 | tc_indr_block_bind_cb_t *cb, void *cb_ident); | |
acb67442 | 98 | |
87d83093 JP |
99 | int tcf_classify(struct sk_buff *skb, const struct tcf_proto *tp, |
100 | struct tcf_result *res, bool compat_mode); | |
101 | ||
8ae70032 | 102 | #else |
88c44a52 PJV |
103 | static inline bool tcf_block_shared(struct tcf_block *block) |
104 | { | |
105 | return false; | |
106 | } | |
107 | ||
6529eaba JP |
108 | static inline |
109 | int tcf_block_get(struct tcf_block **p_block, | |
3c149091 SM |
110 | struct tcf_proto __rcu **p_filter_chain, struct Qdisc *q, |
111 | struct netlink_ext_ack *extack) | |
6529eaba JP |
112 | { |
113 | return 0; | |
114 | } | |
115 | ||
8c4083b3 | 116 | static inline |
c7eb7d72 | 117 | int tcf_block_get_ext(struct tcf_block **p_block, struct Qdisc *q, |
33c30a8b QM |
118 | struct tcf_block_ext_info *ei, |
119 | struct netlink_ext_ack *extack) | |
8c4083b3 JP |
120 | { |
121 | return 0; | |
122 | } | |
123 | ||
6529eaba | 124 | static inline void tcf_block_put(struct tcf_block *block) |
8ae70032 JP |
125 | { |
126 | } | |
87d83093 | 127 | |
8c4083b3 | 128 | static inline |
c7eb7d72 | 129 | void tcf_block_put_ext(struct tcf_block *block, struct Qdisc *q, |
8c4083b3 JP |
130 | struct tcf_block_ext_info *ei) |
131 | { | |
132 | } | |
133 | ||
44186460 JP |
134 | static inline struct Qdisc *tcf_block_q(struct tcf_block *block) |
135 | { | |
136 | return NULL; | |
137 | } | |
138 | ||
acb67442 JP |
139 | static inline |
140 | int tc_setup_cb_block_register(struct tcf_block *block, tc_setup_cb_t *cb, | |
141 | void *cb_priv) | |
142 | { | |
143 | return 0; | |
144 | } | |
145 | ||
146 | static inline | |
147 | void tc_setup_cb_block_unregister(struct tcf_block *block, tc_setup_cb_t *cb, | |
148 | void *cb_priv) | |
149 | { | |
150 | } | |
151 | ||
152 | static inline | |
153 | void *tcf_block_cb_priv(struct tcf_block_cb *block_cb) | |
154 | { | |
155 | return NULL; | |
156 | } | |
157 | ||
158 | static inline | |
159 | struct tcf_block_cb *tcf_block_cb_lookup(struct tcf_block *block, | |
160 | tc_setup_cb_t *cb, void *cb_ident) | |
161 | { | |
162 | return NULL; | |
163 | } | |
164 | ||
165 | static inline | |
166 | void tcf_block_cb_incref(struct tcf_block_cb *block_cb) | |
167 | { | |
168 | } | |
169 | ||
170 | static inline | |
171 | unsigned int tcf_block_cb_decref(struct tcf_block_cb *block_cb) | |
172 | { | |
173 | return 0; | |
174 | } | |
175 | ||
176 | static inline | |
177 | struct tcf_block_cb *__tcf_block_cb_register(struct tcf_block *block, | |
178 | tc_setup_cb_t *cb, void *cb_ident, | |
60513bd8 JH |
179 | void *cb_priv, |
180 | struct netlink_ext_ack *extack) | |
acb67442 JP |
181 | { |
182 | return NULL; | |
183 | } | |
184 | ||
185 | static inline | |
186 | int tcf_block_cb_register(struct tcf_block *block, | |
187 | tc_setup_cb_t *cb, void *cb_ident, | |
60513bd8 | 188 | void *cb_priv, struct netlink_ext_ack *extack) |
acb67442 JP |
189 | { |
190 | return 0; | |
191 | } | |
192 | ||
193 | static inline | |
32636742 JH |
194 | void __tcf_block_cb_unregister(struct tcf_block *block, |
195 | struct tcf_block_cb *block_cb) | |
acb67442 JP |
196 | { |
197 | } | |
198 | ||
199 | static inline | |
200 | void tcf_block_cb_unregister(struct tcf_block *block, | |
201 | tc_setup_cb_t *cb, void *cb_ident) | |
202 | { | |
203 | } | |
204 | ||
7f76fa36 JH |
205 | static inline |
206 | int __tc_indr_block_cb_register(struct net_device *dev, void *cb_priv, | |
207 | tc_indr_block_bind_cb_t *cb, void *cb_ident) | |
208 | { | |
209 | return 0; | |
210 | } | |
211 | ||
212 | static inline | |
213 | int tc_indr_block_cb_register(struct net_device *dev, void *cb_priv, | |
214 | tc_indr_block_bind_cb_t *cb, void *cb_ident) | |
215 | { | |
216 | return 0; | |
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 | ||
225 | static inline | |
226 | void tc_indr_block_cb_unregister(struct net_device *dev, | |
227 | tc_indr_block_bind_cb_t *cb, void *cb_ident) | |
228 | { | |
229 | } | |
230 | ||
87d83093 JP |
231 | static inline int tcf_classify(struct sk_buff *skb, const struct tcf_proto *tp, |
232 | struct tcf_result *res, bool compat_mode) | |
233 | { | |
234 | return TC_ACT_UNSPEC; | |
235 | } | |
8ae70032 | 236 | #endif |
cf1facda | 237 | |
1da177e4 LT |
238 | static inline unsigned long |
239 | __cls_set_class(unsigned long *clp, unsigned long cl) | |
240 | { | |
a0efb80c | 241 | return xchg(clp, cl); |
1da177e4 LT |
242 | } |
243 | ||
244 | static inline unsigned long | |
34e3759c | 245 | cls_set_class(struct Qdisc *q, unsigned long *clp, unsigned long cl) |
1da177e4 LT |
246 | { |
247 | unsigned long old_cl; | |
34e3759c JP |
248 | |
249 | sch_tree_lock(q); | |
1da177e4 | 250 | old_cl = __cls_set_class(clp, cl); |
34e3759c | 251 | sch_tree_unlock(q); |
1da177e4 LT |
252 | return old_cl; |
253 | } | |
254 | ||
255 | static inline void | |
256 | tcf_bind_filter(struct tcf_proto *tp, struct tcf_result *r, unsigned long base) | |
257 | { | |
34e3759c | 258 | struct Qdisc *q = tp->chain->block->q; |
1da177e4 LT |
259 | unsigned long cl; |
260 | ||
34e3759c JP |
261 | /* Check q as it is not set for shared blocks. In that case, |
262 | * setting class is not supported. | |
263 | */ | |
264 | if (!q) | |
265 | return; | |
266 | cl = q->ops->cl_ops->bind_tcf(q, base, r->classid); | |
267 | cl = cls_set_class(q, &r->class, cl); | |
1da177e4 | 268 | if (cl) |
34e3759c | 269 | q->ops->cl_ops->unbind_tcf(q, cl); |
1da177e4 LT |
270 | } |
271 | ||
272 | static inline void | |
273 | tcf_unbind_filter(struct tcf_proto *tp, struct tcf_result *r) | |
274 | { | |
34e3759c | 275 | struct Qdisc *q = tp->chain->block->q; |
1da177e4 LT |
276 | unsigned long cl; |
277 | ||
34e3759c JP |
278 | if (!q) |
279 | return; | |
1da177e4 | 280 | if ((cl = __cls_set_class(&r->class, 0)) != 0) |
34e3759c | 281 | q->ops->cl_ops->unbind_tcf(q, cl); |
1da177e4 LT |
282 | } |
283 | ||
fd2c3ef7 | 284 | struct tcf_exts { |
1da177e4 | 285 | #ifdef CONFIG_NET_CLS_ACT |
33be6271 | 286 | __u32 type; /* for backward compat(TCA_OLD_COMPAT) */ |
22dc13c8 WC |
287 | int nr_actions; |
288 | struct tc_action **actions; | |
e4b95c41 | 289 | struct net *net; |
1da177e4 | 290 | #endif |
5da57f42 WC |
291 | /* Map to export classifier specific extension TLV types to the |
292 | * generic extensions API. Unsupported extensions must be set to 0. | |
293 | */ | |
1da177e4 LT |
294 | int action; |
295 | int police; | |
296 | }; | |
297 | ||
14215108 CW |
298 | static inline int tcf_exts_init(struct tcf_exts *exts, struct net *net, |
299 | int action, int police) | |
33be6271 WC |
300 | { |
301 | #ifdef CONFIG_NET_CLS_ACT | |
5da57f42 | 302 | exts->type = 0; |
22dc13c8 | 303 | exts->nr_actions = 0; |
14215108 | 304 | exts->net = net; |
22dc13c8 WC |
305 | exts->actions = kcalloc(TCA_ACT_MAX_PRIO, sizeof(struct tc_action *), |
306 | GFP_KERNEL); | |
b9a24bb7 WC |
307 | if (!exts->actions) |
308 | return -ENOMEM; | |
33be6271 | 309 | #endif |
5da57f42 WC |
310 | exts->action = action; |
311 | exts->police = police; | |
b9a24bb7 | 312 | return 0; |
33be6271 WC |
313 | } |
314 | ||
e4b95c41 CW |
315 | /* Return false if the netns is being destroyed in cleanup_net(). Callers |
316 | * need to do cleanup synchronously in this case, otherwise may race with | |
317 | * tc_action_net_exit(). Return true for other cases. | |
318 | */ | |
319 | static inline bool tcf_exts_get_net(struct tcf_exts *exts) | |
320 | { | |
321 | #ifdef CONFIG_NET_CLS_ACT | |
322 | exts->net = maybe_get_net(exts->net); | |
323 | return exts->net != NULL; | |
324 | #else | |
325 | return true; | |
326 | #endif | |
327 | } | |
328 | ||
329 | static inline void tcf_exts_put_net(struct tcf_exts *exts) | |
330 | { | |
331 | #ifdef CONFIG_NET_CLS_ACT | |
332 | if (exts->net) | |
333 | put_net(exts->net); | |
334 | #endif | |
335 | } | |
336 | ||
22dc13c8 | 337 | #ifdef CONFIG_NET_CLS_ACT |
244cd96a CW |
338 | #define tcf_exts_for_each_action(i, a, exts) \ |
339 | for (i = 0; i < TCA_ACT_MAX_PRIO && ((a) = (exts)->actions[i]); i++) | |
340 | #else | |
341 | #define tcf_exts_for_each_action(i, a, exts) \ | |
191672ca | 342 | for (; 0; (void)(i), (void)(a), (void)(exts)) |
22dc13c8 | 343 | #endif |
22dc13c8 | 344 | |
d897a638 JK |
345 | static inline void |
346 | tcf_exts_stats_update(const struct tcf_exts *exts, | |
347 | u64 bytes, u64 packets, u64 lastuse) | |
348 | { | |
349 | #ifdef CONFIG_NET_CLS_ACT | |
350 | int i; | |
351 | ||
352 | preempt_disable(); | |
353 | ||
354 | for (i = 0; i < exts->nr_actions; i++) { | |
355 | struct tc_action *a = exts->actions[i]; | |
356 | ||
28169aba | 357 | tcf_action_stats_update(a, bytes, packets, lastuse, true); |
d897a638 JK |
358 | } |
359 | ||
360 | preempt_enable(); | |
361 | #endif | |
362 | } | |
363 | ||
3bcc0cec JP |
364 | /** |
365 | * tcf_exts_has_actions - check if at least one action is present | |
366 | * @exts: tc filter extensions handle | |
367 | * | |
368 | * Returns true if at least one action is present. | |
369 | */ | |
370 | static inline bool tcf_exts_has_actions(struct tcf_exts *exts) | |
371 | { | |
2734437e | 372 | #ifdef CONFIG_NET_CLS_ACT |
3bcc0cec JP |
373 | return exts->nr_actions; |
374 | #else | |
375 | return false; | |
376 | #endif | |
377 | } | |
2734437e | 378 | |
af69afc5 JP |
379 | /** |
380 | * tcf_exts_exec - execute tc filter extensions | |
381 | * @skb: socket buffer | |
382 | * @exts: tc filter extensions handle | |
383 | * @res: desired result | |
384 | * | |
af089e70 | 385 | * Executes all configured extensions. Returns TC_ACT_OK on a normal execution, |
af69afc5 JP |
386 | * a negative number if the filter must be considered unmatched or |
387 | * a positive action code (TC_ACT_*) which must be returned to the | |
388 | * underlying layer. | |
389 | */ | |
390 | static inline int | |
391 | tcf_exts_exec(struct sk_buff *skb, struct tcf_exts *exts, | |
392 | struct tcf_result *res) | |
393 | { | |
394 | #ifdef CONFIG_NET_CLS_ACT | |
ec1a9cca | 395 | return tcf_action_exec(skb, exts->actions, exts->nr_actions, res); |
af69afc5 | 396 | #endif |
af089e70 | 397 | return TC_ACT_OK; |
af69afc5 JP |
398 | } |
399 | ||
5c15257f JP |
400 | int tcf_exts_validate(struct net *net, struct tcf_proto *tp, |
401 | struct nlattr **tb, struct nlattr *rate_tlv, | |
ec6743a1 | 402 | struct tcf_exts *exts, bool ovr, bool rtnl_held, |
50a56190 | 403 | struct netlink_ext_ack *extack); |
18d0264f | 404 | void tcf_exts_destroy(struct tcf_exts *exts); |
9b0d4446 | 405 | void tcf_exts_change(struct tcf_exts *dst, struct tcf_exts *src); |
5da57f42 WC |
406 | int tcf_exts_dump(struct sk_buff *skb, struct tcf_exts *exts); |
407 | int tcf_exts_dump_stats(struct sk_buff *skb, struct tcf_exts *exts); | |
1da177e4 LT |
408 | |
409 | /** | |
410 | * struct tcf_pkt_info - packet information | |
411 | */ | |
fd2c3ef7 | 412 | struct tcf_pkt_info { |
1da177e4 LT |
413 | unsigned char * ptr; |
414 | int nexthdr; | |
415 | }; | |
416 | ||
417 | #ifdef CONFIG_NET_EMATCH | |
418 | ||
419 | struct tcf_ematch_ops; | |
420 | ||
421 | /** | |
422 | * struct tcf_ematch - extended match (ematch) | |
423 | * | |
424 | * @matchid: identifier to allow userspace to reidentify a match | |
425 | * @flags: flags specifying attributes and the relation to other matches | |
426 | * @ops: the operations lookup table of the corresponding ematch module | |
427 | * @datalen: length of the ematch specific configuration data | |
428 | * @data: ematch specific data | |
429 | */ | |
fd2c3ef7 | 430 | struct tcf_ematch { |
1da177e4 LT |
431 | struct tcf_ematch_ops * ops; |
432 | unsigned long data; | |
433 | unsigned int datalen; | |
434 | u16 matchid; | |
435 | u16 flags; | |
82a470f1 | 436 | struct net *net; |
1da177e4 LT |
437 | }; |
438 | ||
439 | static inline int tcf_em_is_container(struct tcf_ematch *em) | |
440 | { | |
441 | return !em->ops; | |
442 | } | |
443 | ||
444 | static inline int tcf_em_is_simple(struct tcf_ematch *em) | |
445 | { | |
446 | return em->flags & TCF_EM_SIMPLE; | |
447 | } | |
448 | ||
449 | static inline int tcf_em_is_inverted(struct tcf_ematch *em) | |
450 | { | |
451 | return em->flags & TCF_EM_INVERT; | |
452 | } | |
453 | ||
454 | static inline int tcf_em_last_match(struct tcf_ematch *em) | |
455 | { | |
456 | return (em->flags & TCF_EM_REL_MASK) == TCF_EM_REL_END; | |
457 | } | |
458 | ||
459 | static inline int tcf_em_early_end(struct tcf_ematch *em, int result) | |
460 | { | |
461 | if (tcf_em_last_match(em)) | |
462 | return 1; | |
463 | ||
464 | if (result == 0 && em->flags & TCF_EM_REL_AND) | |
465 | return 1; | |
466 | ||
467 | if (result != 0 && em->flags & TCF_EM_REL_OR) | |
468 | return 1; | |
469 | ||
470 | return 0; | |
471 | } | |
472 | ||
473 | /** | |
474 | * struct tcf_ematch_tree - ematch tree handle | |
475 | * | |
476 | * @hdr: ematch tree header supplied by userspace | |
477 | * @matches: array of ematches | |
478 | */ | |
fd2c3ef7 | 479 | struct tcf_ematch_tree { |
1da177e4 LT |
480 | struct tcf_ematch_tree_hdr hdr; |
481 | struct tcf_ematch * matches; | |
482 | ||
483 | }; | |
484 | ||
485 | /** | |
486 | * struct tcf_ematch_ops - ematch module operations | |
487 | * | |
488 | * @kind: identifier (kind) of this ematch module | |
489 | * @datalen: length of expected configuration data (optional) | |
490 | * @change: called during validation (optional) | |
491 | * @match: called during ematch tree evaluation, must return 1/0 | |
492 | * @destroy: called during destroyage (optional) | |
493 | * @dump: called during dumping process (optional) | |
494 | * @owner: owner, must be set to THIS_MODULE | |
495 | * @link: link to previous/next ematch module (internal use) | |
496 | */ | |
fd2c3ef7 | 497 | struct tcf_ematch_ops { |
1da177e4 LT |
498 | int kind; |
499 | int datalen; | |
82a470f1 | 500 | int (*change)(struct net *net, void *, |
1da177e4 LT |
501 | int, struct tcf_ematch *); |
502 | int (*match)(struct sk_buff *, struct tcf_ematch *, | |
503 | struct tcf_pkt_info *); | |
82a470f1 | 504 | void (*destroy)(struct tcf_ematch *); |
1da177e4 LT |
505 | int (*dump)(struct sk_buff *, struct tcf_ematch *); |
506 | struct module *owner; | |
507 | struct list_head link; | |
508 | }; | |
509 | ||
5c15257f JP |
510 | int tcf_em_register(struct tcf_ematch_ops *); |
511 | void tcf_em_unregister(struct tcf_ematch_ops *); | |
512 | int tcf_em_tree_validate(struct tcf_proto *, struct nlattr *, | |
513 | struct tcf_ematch_tree *); | |
82a470f1 | 514 | void tcf_em_tree_destroy(struct tcf_ematch_tree *); |
5c15257f JP |
515 | int tcf_em_tree_dump(struct sk_buff *, struct tcf_ematch_tree *, int); |
516 | int __tcf_em_tree_match(struct sk_buff *, struct tcf_ematch_tree *, | |
517 | struct tcf_pkt_info *); | |
1da177e4 | 518 | |
1da177e4 LT |
519 | /** |
520 | * tcf_em_tree_match - evaulate an ematch tree | |
521 | * | |
522 | * @skb: socket buffer of the packet in question | |
523 | * @tree: ematch tree to be used for evaluation | |
524 | * @info: packet information examined by classifier | |
525 | * | |
526 | * This function matches @skb against the ematch tree in @tree by going | |
527 | * through all ematches respecting their logic relations returning | |
528 | * as soon as the result is obvious. | |
529 | * | |
530 | * Returns 1 if the ematch tree as-one matches, no ematches are configured | |
531 | * or ematch is not enabled in the kernel, otherwise 0 is returned. | |
532 | */ | |
533 | static inline int tcf_em_tree_match(struct sk_buff *skb, | |
534 | struct tcf_ematch_tree *tree, | |
535 | struct tcf_pkt_info *info) | |
536 | { | |
537 | if (tree->hdr.nmatches) | |
538 | return __tcf_em_tree_match(skb, tree, info); | |
539 | else | |
540 | return 1; | |
541 | } | |
542 | ||
db3d99c0 PM |
543 | #define MODULE_ALIAS_TCF_EMATCH(kind) MODULE_ALIAS("ematch-kind-" __stringify(kind)) |
544 | ||
1da177e4 LT |
545 | #else /* CONFIG_NET_EMATCH */ |
546 | ||
fd2c3ef7 | 547 | struct tcf_ematch_tree { |
1da177e4 LT |
548 | }; |
549 | ||
550 | #define tcf_em_tree_validate(tp, tb, t) ((void)(t), 0) | |
82a470f1 | 551 | #define tcf_em_tree_destroy(t) do { (void)(t); } while(0) |
1da177e4 | 552 | #define tcf_em_tree_dump(skb, t, tlv) (0) |
1da177e4 LT |
553 | #define tcf_em_tree_match(skb, t, info) ((void)(info), 1) |
554 | ||
555 | #endif /* CONFIG_NET_EMATCH */ | |
556 | ||
557 | static inline unsigned char * tcf_get_base_ptr(struct sk_buff *skb, int layer) | |
558 | { | |
559 | switch (layer) { | |
560 | case TCF_LAYER_LINK: | |
d3303a65 | 561 | return skb_mac_header(skb); |
1da177e4 | 562 | case TCF_LAYER_NETWORK: |
d56f90a7 | 563 | return skb_network_header(skb); |
1da177e4 | 564 | case TCF_LAYER_TRANSPORT: |
9c70220b | 565 | return skb_transport_header(skb); |
1da177e4 LT |
566 | } |
567 | ||
568 | return NULL; | |
569 | } | |
570 | ||
eddc9ec5 ACM |
571 | static inline int tcf_valid_offset(const struct sk_buff *skb, |
572 | const unsigned char *ptr, const int len) | |
1da177e4 | 573 | { |
da521b2c DM |
574 | return likely((ptr + len) <= skb_tail_pointer(skb) && |
575 | ptr >= skb->head && | |
576 | (ptr <= (ptr + len))); | |
1da177e4 LT |
577 | } |
578 | ||
579 | #ifdef CONFIG_NET_CLS_IND | |
0eeb8ffc DL |
580 | #include <net/net_namespace.h> |
581 | ||
1da177e4 | 582 | static inline int |
1057c55f AA |
583 | tcf_change_indev(struct net *net, struct nlattr *indev_tlv, |
584 | struct netlink_ext_ack *extack) | |
1da177e4 | 585 | { |
2519a602 WC |
586 | char indev[IFNAMSIZ]; |
587 | struct net_device *dev; | |
588 | ||
1057c55f AA |
589 | if (nla_strlcpy(indev, indev_tlv, IFNAMSIZ) >= IFNAMSIZ) { |
590 | NL_SET_ERR_MSG(extack, "Interface name too long"); | |
1da177e4 | 591 | return -EINVAL; |
1057c55f | 592 | } |
2519a602 WC |
593 | dev = __dev_get_by_name(net, indev); |
594 | if (!dev) | |
595 | return -ENODEV; | |
596 | return dev->ifindex; | |
1da177e4 LT |
597 | } |
598 | ||
2519a602 WC |
599 | static inline bool |
600 | tcf_match_indev(struct sk_buff *skb, int ifindex) | |
1da177e4 | 601 | { |
2519a602 WC |
602 | if (!ifindex) |
603 | return true; | |
604 | if (!skb->skb_iif) | |
605 | return false; | |
606 | return ifindex == skb->skb_iif; | |
1da177e4 LT |
607 | } |
608 | #endif /* CONFIG_NET_CLS_IND */ | |
609 | ||
3a7b6861 PNA |
610 | int tc_setup_flow_action(struct flow_action *flow_action, |
611 | const struct tcf_exts *exts); | |
aeb3fecd CW |
612 | int tc_setup_cb_call(struct tcf_block *block, enum tc_setup_type type, |
613 | void *type_data, bool err_stop); | |
e3ab786b | 614 | unsigned int tcf_exts_num_actions(struct tcf_exts *exts); |
717503b9 | 615 | |
8c4083b3 JP |
616 | enum tc_block_command { |
617 | TC_BLOCK_BIND, | |
618 | TC_BLOCK_UNBIND, | |
619 | }; | |
620 | ||
621 | struct tc_block_offload { | |
622 | enum tc_block_command command; | |
623 | enum tcf_block_binder_type binder_type; | |
624 | struct tcf_block *block; | |
60513bd8 | 625 | struct netlink_ext_ack *extack; |
8c4083b3 JP |
626 | }; |
627 | ||
5fd9fc4e | 628 | struct tc_cls_common_offload { |
5fd9fc4e JP |
629 | u32 chain_index; |
630 | __be16 protocol; | |
d7c1c8d2 | 631 | u32 prio; |
8f0b425a | 632 | struct netlink_ext_ack *extack; |
5fd9fc4e JP |
633 | }; |
634 | ||
a1b7c5fd JF |
635 | struct tc_cls_u32_knode { |
636 | struct tcf_exts *exts; | |
068ceb35 | 637 | struct tcf_result *res; |
e014860e | 638 | struct tc_u32_sel *sel; |
a1b7c5fd JF |
639 | u32 handle; |
640 | u32 val; | |
641 | u32 mask; | |
642 | u32 link_handle; | |
e014860e | 643 | u8 fshift; |
a1b7c5fd JF |
644 | }; |
645 | ||
646 | struct tc_cls_u32_hnode { | |
647 | u32 handle; | |
648 | u32 prio; | |
649 | unsigned int divisor; | |
650 | }; | |
651 | ||
652 | enum tc_clsu32_command { | |
653 | TC_CLSU32_NEW_KNODE, | |
654 | TC_CLSU32_REPLACE_KNODE, | |
655 | TC_CLSU32_DELETE_KNODE, | |
656 | TC_CLSU32_NEW_HNODE, | |
657 | TC_CLSU32_REPLACE_HNODE, | |
658 | TC_CLSU32_DELETE_HNODE, | |
659 | }; | |
660 | ||
661 | struct tc_cls_u32_offload { | |
5fd9fc4e | 662 | struct tc_cls_common_offload common; |
a1b7c5fd JF |
663 | /* knode values */ |
664 | enum tc_clsu32_command command; | |
665 | union { | |
666 | struct tc_cls_u32_knode knode; | |
667 | struct tc_cls_u32_hnode hnode; | |
668 | }; | |
669 | }; | |
670 | ||
7b06e8ae | 671 | static inline bool tc_can_offload(const struct net_device *dev) |
6843e7a2 | 672 | { |
70b5aee4 | 673 | return dev->features & NETIF_F_HW_TC; |
6843e7a2 JF |
674 | } |
675 | ||
f9eda14f QM |
676 | static inline bool tc_can_offload_extack(const struct net_device *dev, |
677 | struct netlink_ext_ack *extack) | |
678 | { | |
679 | bool can = tc_can_offload(dev); | |
680 | ||
681 | if (!can) | |
682 | NL_SET_ERR_MSG(extack, "TC offload is disabled on net device"); | |
683 | ||
684 | return can; | |
685 | } | |
686 | ||
878db9f0 JK |
687 | static inline bool |
688 | tc_cls_can_offload_and_chain0(const struct net_device *dev, | |
689 | struct tc_cls_common_offload *common) | |
690 | { | |
691 | if (!tc_can_offload_extack(dev, common->extack)) | |
692 | return false; | |
693 | if (common->chain_index) { | |
694 | NL_SET_ERR_MSG(common->extack, | |
695 | "Driver supports only offload of chain 0"); | |
696 | return false; | |
697 | } | |
698 | return true; | |
699 | } | |
700 | ||
55330f05 HHZ |
701 | static inline bool tc_skip_hw(u32 flags) |
702 | { | |
703 | return (flags & TCA_CLS_FLAGS_SKIP_HW) ? true : false; | |
704 | } | |
705 | ||
d34e3e18 SS |
706 | static inline bool tc_skip_sw(u32 flags) |
707 | { | |
708 | return (flags & TCA_CLS_FLAGS_SKIP_SW) ? true : false; | |
709 | } | |
710 | ||
711 | /* SKIP_HW and SKIP_SW are mutually exclusive flags. */ | |
712 | static inline bool tc_flags_valid(u32 flags) | |
713 | { | |
81c7288b MRL |
714 | if (flags & ~(TCA_CLS_FLAGS_SKIP_HW | TCA_CLS_FLAGS_SKIP_SW | |
715 | TCA_CLS_FLAGS_VERBOSE)) | |
d34e3e18 SS |
716 | return false; |
717 | ||
81c7288b | 718 | flags &= TCA_CLS_FLAGS_SKIP_HW | TCA_CLS_FLAGS_SKIP_SW; |
d34e3e18 SS |
719 | if (!(flags ^ (TCA_CLS_FLAGS_SKIP_HW | TCA_CLS_FLAGS_SKIP_SW))) |
720 | return false; | |
721 | ||
722 | return true; | |
723 | } | |
724 | ||
e696028a OG |
725 | static inline bool tc_in_hw(u32 flags) |
726 | { | |
727 | return (flags & TCA_CLS_FLAGS_IN_HW) ? true : false; | |
728 | } | |
729 | ||
34832e1c JK |
730 | static inline void |
731 | tc_cls_common_offload_init(struct tc_cls_common_offload *cls_common, | |
732 | const struct tcf_proto *tp, u32 flags, | |
733 | struct netlink_ext_ack *extack) | |
734 | { | |
735 | cls_common->chain_index = tp->chain->index; | |
736 | cls_common->protocol = tp->protocol; | |
737 | cls_common->prio = tp->prio; | |
81c7288b | 738 | if (tc_skip_sw(flags) || flags & TCA_CLS_FLAGS_VERBOSE) |
34832e1c JK |
739 | cls_common->extack = extack; |
740 | } | |
741 | ||
5b33f488 AV |
742 | enum tc_fl_command { |
743 | TC_CLSFLOWER_REPLACE, | |
744 | TC_CLSFLOWER_DESTROY, | |
10cbc684 | 745 | TC_CLSFLOWER_STATS, |
34738452 JP |
746 | TC_CLSFLOWER_TMPLT_CREATE, |
747 | TC_CLSFLOWER_TMPLT_DESTROY, | |
5b33f488 AV |
748 | }; |
749 | ||
750 | struct tc_cls_flower_offload { | |
5fd9fc4e | 751 | struct tc_cls_common_offload common; |
5b33f488 | 752 | enum tc_fl_command command; |
8208d21b | 753 | unsigned long cookie; |
8f256622 | 754 | struct flow_rule *rule; |
3b1903ef | 755 | struct flow_stats stats; |
384c181e | 756 | u32 classid; |
5b33f488 AV |
757 | }; |
758 | ||
8f256622 PNA |
759 | static inline struct flow_rule * |
760 | tc_cls_flower_offload_flow_rule(struct tc_cls_flower_offload *tc_flow_cmd) | |
761 | { | |
762 | return tc_flow_cmd->rule; | |
763 | } | |
764 | ||
b87f7936 YG |
765 | enum tc_matchall_command { |
766 | TC_CLSMATCHALL_REPLACE, | |
767 | TC_CLSMATCHALL_DESTROY, | |
b7fe4ab8 | 768 | TC_CLSMATCHALL_STATS, |
b87f7936 YG |
769 | }; |
770 | ||
771 | struct tc_cls_matchall_offload { | |
5fd9fc4e | 772 | struct tc_cls_common_offload common; |
b87f7936 | 773 | enum tc_matchall_command command; |
f00cbf19 | 774 | struct flow_rule *rule; |
b7fe4ab8 | 775 | struct flow_stats stats; |
b87f7936 YG |
776 | unsigned long cookie; |
777 | }; | |
778 | ||
332ae8e2 | 779 | enum tc_clsbpf_command { |
102740bd | 780 | TC_CLSBPF_OFFLOAD, |
68d64063 | 781 | TC_CLSBPF_STATS, |
332ae8e2 JK |
782 | }; |
783 | ||
784 | struct tc_cls_bpf_offload { | |
5fd9fc4e | 785 | struct tc_cls_common_offload common; |
332ae8e2 JK |
786 | enum tc_clsbpf_command command; |
787 | struct tcf_exts *exts; | |
788 | struct bpf_prog *prog; | |
102740bd | 789 | struct bpf_prog *oldprog; |
332ae8e2 JK |
790 | const char *name; |
791 | bool exts_integrated; | |
792 | }; | |
793 | ||
4e8b86c0 AN |
794 | struct tc_mqprio_qopt_offload { |
795 | /* struct tc_mqprio_qopt must always be the first element */ | |
796 | struct tc_mqprio_qopt qopt; | |
797 | u16 mode; | |
798 | u16 shaper; | |
799 | u32 flags; | |
800 | u64 min_rate[TC_QOPT_MAX_QUEUE]; | |
801 | u64 max_rate[TC_QOPT_MAX_QUEUE]; | |
802 | }; | |
1045ba77 JHS |
803 | |
804 | /* This structure holds cookie structure that is passed from user | |
805 | * to the kernel for actions and classifiers | |
806 | */ | |
807 | struct tc_cookie { | |
808 | u8 *data; | |
809 | u32 len; | |
eec94fdb | 810 | struct rcu_head rcu; |
1045ba77 | 811 | }; |
602f3baf | 812 | |
f34b4aac NF |
813 | struct tc_qopt_offload_stats { |
814 | struct gnet_stats_basic_packed *bstats; | |
815 | struct gnet_stats_queue *qstats; | |
816 | }; | |
817 | ||
f971b132 JK |
818 | enum tc_mq_command { |
819 | TC_MQ_CREATE, | |
820 | TC_MQ_DESTROY, | |
47c669a4 | 821 | TC_MQ_STATS, |
d577a3d2 JK |
822 | TC_MQ_GRAFT, |
823 | }; | |
824 | ||
825 | struct tc_mq_opt_offload_graft_params { | |
826 | unsigned long queue; | |
827 | u32 child_handle; | |
f971b132 JK |
828 | }; |
829 | ||
830 | struct tc_mq_qopt_offload { | |
831 | enum tc_mq_command command; | |
832 | u32 handle; | |
d577a3d2 JK |
833 | union { |
834 | struct tc_qopt_offload_stats stats; | |
835 | struct tc_mq_opt_offload_graft_params graft_params; | |
836 | }; | |
f971b132 JK |
837 | }; |
838 | ||
602f3baf NF |
839 | enum tc_red_command { |
840 | TC_RED_REPLACE, | |
841 | TC_RED_DESTROY, | |
842 | TC_RED_STATS, | |
843 | TC_RED_XSTATS, | |
bf2a752b | 844 | TC_RED_GRAFT, |
602f3baf NF |
845 | }; |
846 | ||
847 | struct tc_red_qopt_offload_params { | |
848 | u32 min; | |
849 | u32 max; | |
850 | u32 probability; | |
c0b7490b | 851 | u32 limit; |
602f3baf | 852 | bool is_ecn; |
190852a5 | 853 | bool is_harddrop; |
416ef9b1 | 854 | struct gnet_stats_queue *qstats; |
602f3baf | 855 | }; |
602f3baf NF |
856 | |
857 | struct tc_red_qopt_offload { | |
858 | enum tc_red_command command; | |
859 | u32 handle; | |
860 | u32 parent; | |
861 | union { | |
862 | struct tc_red_qopt_offload_params set; | |
f34b4aac | 863 | struct tc_qopt_offload_stats stats; |
602f3baf | 864 | struct red_stats *xstats; |
bf2a752b | 865 | u32 child_handle; |
602f3baf NF |
866 | }; |
867 | }; | |
868 | ||
890d8d23 JK |
869 | enum tc_gred_command { |
870 | TC_GRED_REPLACE, | |
871 | TC_GRED_DESTROY, | |
e49efd52 | 872 | TC_GRED_STATS, |
890d8d23 JK |
873 | }; |
874 | ||
875 | struct tc_gred_vq_qopt_offload_params { | |
876 | bool present; | |
877 | u32 limit; | |
878 | u32 prio; | |
879 | u32 min; | |
880 | u32 max; | |
881 | bool is_ecn; | |
882 | bool is_harddrop; | |
883 | u32 probability; | |
884 | /* Only need backlog, see struct tc_prio_qopt_offload_params */ | |
885 | u32 *backlog; | |
886 | }; | |
887 | ||
888 | struct tc_gred_qopt_offload_params { | |
889 | bool grio_on; | |
890 | bool wred_on; | |
891 | unsigned int dp_cnt; | |
892 | unsigned int dp_def; | |
893 | struct gnet_stats_queue *qstats; | |
894 | struct tc_gred_vq_qopt_offload_params tab[MAX_DPs]; | |
895 | }; | |
896 | ||
e49efd52 JK |
897 | struct tc_gred_qopt_offload_stats { |
898 | struct gnet_stats_basic_packed bstats[MAX_DPs]; | |
899 | struct gnet_stats_queue qstats[MAX_DPs]; | |
900 | struct red_stats *xstats[MAX_DPs]; | |
901 | }; | |
902 | ||
890d8d23 JK |
903 | struct tc_gred_qopt_offload { |
904 | enum tc_gred_command command; | |
905 | u32 handle; | |
906 | u32 parent; | |
907 | union { | |
908 | struct tc_gred_qopt_offload_params set; | |
e49efd52 | 909 | struct tc_gred_qopt_offload_stats stats; |
890d8d23 JK |
910 | }; |
911 | }; | |
912 | ||
7fdb61b4 NF |
913 | enum tc_prio_command { |
914 | TC_PRIO_REPLACE, | |
915 | TC_PRIO_DESTROY, | |
916 | TC_PRIO_STATS, | |
b9c7a7ac | 917 | TC_PRIO_GRAFT, |
7fdb61b4 NF |
918 | }; |
919 | ||
920 | struct tc_prio_qopt_offload_params { | |
921 | int bands; | |
922 | u8 priomap[TC_PRIO_MAX + 1]; | |
923 | /* In case that a prio qdisc is offloaded and now is changed to a | |
924 | * non-offloadedable config, it needs to update the backlog & qlen | |
925 | * values to negate the HW backlog & qlen values (and only them). | |
926 | */ | |
927 | struct gnet_stats_queue *qstats; | |
928 | }; | |
929 | ||
b9c7a7ac NF |
930 | struct tc_prio_qopt_offload_graft_params { |
931 | u8 band; | |
932 | u32 child_handle; | |
933 | }; | |
934 | ||
7fdb61b4 NF |
935 | struct tc_prio_qopt_offload { |
936 | enum tc_prio_command command; | |
937 | u32 handle; | |
938 | u32 parent; | |
939 | union { | |
940 | struct tc_prio_qopt_offload_params replace_params; | |
941 | struct tc_qopt_offload_stats stats; | |
b9c7a7ac | 942 | struct tc_prio_qopt_offload_graft_params graft_params; |
7fdb61b4 NF |
943 | }; |
944 | }; | |
b9c7a7ac | 945 | |
98b0e5f6 JK |
946 | enum tc_root_command { |
947 | TC_ROOT_GRAFT, | |
948 | }; | |
949 | ||
950 | struct tc_root_qopt_offload { | |
951 | enum tc_root_command command; | |
952 | u32 handle; | |
953 | bool ingress; | |
954 | }; | |
955 | ||
1da177e4 | 956 | #endif |