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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> | |
9 | ||
10 | /* Basic packet classifier frontend definitions. */ | |
11 | ||
fd2c3ef7 | 12 | struct tcf_walker { |
1da177e4 LT |
13 | int stop; |
14 | int skip; | |
15 | int count; | |
8113c095 | 16 | int (*fn)(struct tcf_proto *, void *node, struct tcf_walker *); |
1da177e4 LT |
17 | }; |
18 | ||
5c15257f JP |
19 | int register_tcf_proto_ops(struct tcf_proto_ops *ops); |
20 | int unregister_tcf_proto_ops(struct tcf_proto_ops *ops); | |
1da177e4 | 21 | |
8c4083b3 JP |
22 | enum tcf_block_binder_type { |
23 | TCF_BLOCK_BINDER_TYPE_UNSPEC, | |
6e40cf2d JP |
24 | TCF_BLOCK_BINDER_TYPE_CLSACT_INGRESS, |
25 | TCF_BLOCK_BINDER_TYPE_CLSACT_EGRESS, | |
8c4083b3 JP |
26 | }; |
27 | ||
28 | struct tcf_block_ext_info { | |
29 | enum tcf_block_binder_type binder_type; | |
c7eb7d72 JP |
30 | tcf_chain_head_change_t *chain_head_change; |
31 | void *chain_head_change_priv; | |
48617387 | 32 | u32 block_index; |
8c4083b3 JP |
33 | }; |
34 | ||
acb67442 | 35 | struct tcf_block_cb; |
aaa908ff | 36 | bool tcf_queue_work(struct rcu_work *rwork, work_func_t func); |
acb67442 | 37 | |
8ae70032 | 38 | #ifdef CONFIG_NET_CLS |
367a8ce8 WC |
39 | struct tcf_chain *tcf_chain_get(struct tcf_block *block, u32 chain_index, |
40 | bool create); | |
5bc17018 | 41 | void tcf_chain_put(struct tcf_chain *chain); |
f36fe1c4 | 42 | void tcf_block_netif_keep_dst(struct tcf_block *block); |
6529eaba | 43 | int tcf_block_get(struct tcf_block **p_block, |
8d1a77f9 AA |
44 | struct tcf_proto __rcu **p_filter_chain, struct Qdisc *q, |
45 | struct netlink_ext_ack *extack); | |
c7eb7d72 | 46 | int tcf_block_get_ext(struct tcf_block **p_block, struct Qdisc *q, |
8d1a77f9 AA |
47 | struct tcf_block_ext_info *ei, |
48 | struct netlink_ext_ack *extack); | |
6529eaba | 49 | void tcf_block_put(struct tcf_block *block); |
c7eb7d72 | 50 | void tcf_block_put_ext(struct tcf_block *block, struct Qdisc *q, |
8c4083b3 | 51 | struct tcf_block_ext_info *ei); |
44186460 | 52 | |
48617387 JP |
53 | static inline bool tcf_block_shared(struct tcf_block *block) |
54 | { | |
55 | return block->index; | |
56 | } | |
57 | ||
44186460 JP |
58 | static inline struct Qdisc *tcf_block_q(struct tcf_block *block) |
59 | { | |
48617387 | 60 | WARN_ON(tcf_block_shared(block)); |
44186460 JP |
61 | return block->q; |
62 | } | |
63 | ||
64 | static inline struct net_device *tcf_block_dev(struct tcf_block *block) | |
65 | { | |
66 | return tcf_block_q(block)->dev_queue->dev; | |
67 | } | |
68 | ||
acb67442 JP |
69 | void *tcf_block_cb_priv(struct tcf_block_cb *block_cb); |
70 | struct tcf_block_cb *tcf_block_cb_lookup(struct tcf_block *block, | |
71 | tc_setup_cb_t *cb, void *cb_ident); | |
72 | void tcf_block_cb_incref(struct tcf_block_cb *block_cb); | |
73 | unsigned int tcf_block_cb_decref(struct tcf_block_cb *block_cb); | |
74 | struct tcf_block_cb *__tcf_block_cb_register(struct tcf_block *block, | |
75 | tc_setup_cb_t *cb, void *cb_ident, | |
60513bd8 JH |
76 | void *cb_priv, |
77 | struct netlink_ext_ack *extack); | |
acb67442 JP |
78 | int tcf_block_cb_register(struct tcf_block *block, |
79 | tc_setup_cb_t *cb, void *cb_ident, | |
60513bd8 | 80 | void *cb_priv, struct netlink_ext_ack *extack); |
32636742 JH |
81 | void __tcf_block_cb_unregister(struct tcf_block *block, |
82 | struct tcf_block_cb *block_cb); | |
acb67442 JP |
83 | void tcf_block_cb_unregister(struct tcf_block *block, |
84 | tc_setup_cb_t *cb, void *cb_ident); | |
85 | ||
87d83093 JP |
86 | int tcf_classify(struct sk_buff *skb, const struct tcf_proto *tp, |
87 | struct tcf_result *res, bool compat_mode); | |
88 | ||
8ae70032 | 89 | #else |
6529eaba JP |
90 | static inline |
91 | int tcf_block_get(struct tcf_block **p_block, | |
3c149091 SM |
92 | struct tcf_proto __rcu **p_filter_chain, struct Qdisc *q, |
93 | struct netlink_ext_ack *extack) | |
6529eaba JP |
94 | { |
95 | return 0; | |
96 | } | |
97 | ||
8c4083b3 | 98 | static inline |
c7eb7d72 | 99 | int tcf_block_get_ext(struct tcf_block **p_block, struct Qdisc *q, |
33c30a8b QM |
100 | struct tcf_block_ext_info *ei, |
101 | struct netlink_ext_ack *extack) | |
8c4083b3 JP |
102 | { |
103 | return 0; | |
104 | } | |
105 | ||
6529eaba | 106 | static inline void tcf_block_put(struct tcf_block *block) |
8ae70032 JP |
107 | { |
108 | } | |
87d83093 | 109 | |
8c4083b3 | 110 | static inline |
c7eb7d72 | 111 | void tcf_block_put_ext(struct tcf_block *block, struct Qdisc *q, |
8c4083b3 JP |
112 | struct tcf_block_ext_info *ei) |
113 | { | |
114 | } | |
115 | ||
951a8ee6 JH |
116 | static inline bool tcf_block_shared(struct tcf_block *block) |
117 | { | |
118 | return false; | |
119 | } | |
120 | ||
44186460 JP |
121 | static inline struct Qdisc *tcf_block_q(struct tcf_block *block) |
122 | { | |
123 | return NULL; | |
124 | } | |
125 | ||
126 | static inline struct net_device *tcf_block_dev(struct tcf_block *block) | |
127 | { | |
128 | return NULL; | |
129 | } | |
130 | ||
acb67442 JP |
131 | static inline |
132 | int tc_setup_cb_block_register(struct tcf_block *block, tc_setup_cb_t *cb, | |
133 | void *cb_priv) | |
134 | { | |
135 | return 0; | |
136 | } | |
137 | ||
138 | static inline | |
139 | void tc_setup_cb_block_unregister(struct tcf_block *block, tc_setup_cb_t *cb, | |
140 | void *cb_priv) | |
141 | { | |
142 | } | |
143 | ||
144 | static inline | |
145 | void *tcf_block_cb_priv(struct tcf_block_cb *block_cb) | |
146 | { | |
147 | return NULL; | |
148 | } | |
149 | ||
150 | static inline | |
151 | struct tcf_block_cb *tcf_block_cb_lookup(struct tcf_block *block, | |
152 | tc_setup_cb_t *cb, void *cb_ident) | |
153 | { | |
154 | return NULL; | |
155 | } | |
156 | ||
157 | static inline | |
158 | void tcf_block_cb_incref(struct tcf_block_cb *block_cb) | |
159 | { | |
160 | } | |
161 | ||
162 | static inline | |
163 | unsigned int tcf_block_cb_decref(struct tcf_block_cb *block_cb) | |
164 | { | |
165 | return 0; | |
166 | } | |
167 | ||
168 | static inline | |
169 | struct tcf_block_cb *__tcf_block_cb_register(struct tcf_block *block, | |
170 | tc_setup_cb_t *cb, void *cb_ident, | |
60513bd8 JH |
171 | void *cb_priv, |
172 | struct netlink_ext_ack *extack) | |
acb67442 JP |
173 | { |
174 | return NULL; | |
175 | } | |
176 | ||
177 | static inline | |
178 | int tcf_block_cb_register(struct tcf_block *block, | |
179 | tc_setup_cb_t *cb, void *cb_ident, | |
60513bd8 | 180 | void *cb_priv, struct netlink_ext_ack *extack) |
acb67442 JP |
181 | { |
182 | return 0; | |
183 | } | |
184 | ||
185 | static inline | |
32636742 JH |
186 | void __tcf_block_cb_unregister(struct tcf_block *block, |
187 | struct tcf_block_cb *block_cb) | |
acb67442 JP |
188 | { |
189 | } | |
190 | ||
191 | static inline | |
192 | void tcf_block_cb_unregister(struct tcf_block *block, | |
193 | tc_setup_cb_t *cb, void *cb_ident) | |
194 | { | |
195 | } | |
196 | ||
87d83093 JP |
197 | static inline int tcf_classify(struct sk_buff *skb, const struct tcf_proto *tp, |
198 | struct tcf_result *res, bool compat_mode) | |
199 | { | |
200 | return TC_ACT_UNSPEC; | |
201 | } | |
8ae70032 | 202 | #endif |
cf1facda | 203 | |
1da177e4 LT |
204 | static inline unsigned long |
205 | __cls_set_class(unsigned long *clp, unsigned long cl) | |
206 | { | |
a0efb80c | 207 | return xchg(clp, cl); |
1da177e4 LT |
208 | } |
209 | ||
210 | static inline unsigned long | |
34e3759c | 211 | cls_set_class(struct Qdisc *q, unsigned long *clp, unsigned long cl) |
1da177e4 LT |
212 | { |
213 | unsigned long old_cl; | |
34e3759c JP |
214 | |
215 | sch_tree_lock(q); | |
1da177e4 | 216 | old_cl = __cls_set_class(clp, cl); |
34e3759c | 217 | sch_tree_unlock(q); |
1da177e4 LT |
218 | return old_cl; |
219 | } | |
220 | ||
221 | static inline void | |
222 | tcf_bind_filter(struct tcf_proto *tp, struct tcf_result *r, unsigned long base) | |
223 | { | |
34e3759c | 224 | struct Qdisc *q = tp->chain->block->q; |
1da177e4 LT |
225 | unsigned long cl; |
226 | ||
34e3759c JP |
227 | /* Check q as it is not set for shared blocks. In that case, |
228 | * setting class is not supported. | |
229 | */ | |
230 | if (!q) | |
231 | return; | |
232 | cl = q->ops->cl_ops->bind_tcf(q, base, r->classid); | |
233 | cl = cls_set_class(q, &r->class, cl); | |
1da177e4 | 234 | if (cl) |
34e3759c | 235 | q->ops->cl_ops->unbind_tcf(q, cl); |
1da177e4 LT |
236 | } |
237 | ||
238 | static inline void | |
239 | tcf_unbind_filter(struct tcf_proto *tp, struct tcf_result *r) | |
240 | { | |
34e3759c | 241 | struct Qdisc *q = tp->chain->block->q; |
1da177e4 LT |
242 | unsigned long cl; |
243 | ||
34e3759c JP |
244 | if (!q) |
245 | return; | |
1da177e4 | 246 | if ((cl = __cls_set_class(&r->class, 0)) != 0) |
34e3759c | 247 | q->ops->cl_ops->unbind_tcf(q, cl); |
1da177e4 LT |
248 | } |
249 | ||
fd2c3ef7 | 250 | struct tcf_exts { |
1da177e4 | 251 | #ifdef CONFIG_NET_CLS_ACT |
33be6271 | 252 | __u32 type; /* for backward compat(TCA_OLD_COMPAT) */ |
22dc13c8 WC |
253 | int nr_actions; |
254 | struct tc_action **actions; | |
e4b95c41 | 255 | struct net *net; |
1da177e4 | 256 | #endif |
5da57f42 WC |
257 | /* Map to export classifier specific extension TLV types to the |
258 | * generic extensions API. Unsupported extensions must be set to 0. | |
259 | */ | |
1da177e4 LT |
260 | int action; |
261 | int police; | |
262 | }; | |
263 | ||
b9a24bb7 | 264 | static inline int tcf_exts_init(struct tcf_exts *exts, int action, int police) |
33be6271 WC |
265 | { |
266 | #ifdef CONFIG_NET_CLS_ACT | |
5da57f42 | 267 | exts->type = 0; |
22dc13c8 | 268 | exts->nr_actions = 0; |
e4b95c41 | 269 | exts->net = NULL; |
22dc13c8 WC |
270 | exts->actions = kcalloc(TCA_ACT_MAX_PRIO, sizeof(struct tc_action *), |
271 | GFP_KERNEL); | |
b9a24bb7 WC |
272 | if (!exts->actions) |
273 | return -ENOMEM; | |
33be6271 | 274 | #endif |
5da57f42 WC |
275 | exts->action = action; |
276 | exts->police = police; | |
b9a24bb7 | 277 | return 0; |
33be6271 WC |
278 | } |
279 | ||
e4b95c41 CW |
280 | /* Return false if the netns is being destroyed in cleanup_net(). Callers |
281 | * need to do cleanup synchronously in this case, otherwise may race with | |
282 | * tc_action_net_exit(). Return true for other cases. | |
283 | */ | |
284 | static inline bool tcf_exts_get_net(struct tcf_exts *exts) | |
285 | { | |
286 | #ifdef CONFIG_NET_CLS_ACT | |
287 | exts->net = maybe_get_net(exts->net); | |
288 | return exts->net != NULL; | |
289 | #else | |
290 | return true; | |
291 | #endif | |
292 | } | |
293 | ||
294 | static inline void tcf_exts_put_net(struct tcf_exts *exts) | |
295 | { | |
296 | #ifdef CONFIG_NET_CLS_ACT | |
297 | if (exts->net) | |
298 | put_net(exts->net); | |
299 | #endif | |
300 | } | |
301 | ||
22dc13c8 WC |
302 | static inline void tcf_exts_to_list(const struct tcf_exts *exts, |
303 | struct list_head *actions) | |
304 | { | |
305 | #ifdef CONFIG_NET_CLS_ACT | |
306 | int i; | |
307 | ||
308 | for (i = 0; i < exts->nr_actions; i++) { | |
309 | struct tc_action *a = exts->actions[i]; | |
310 | ||
fa5effe7 | 311 | list_add_tail(&a->list, actions); |
22dc13c8 WC |
312 | } |
313 | #endif | |
314 | } | |
315 | ||
d897a638 JK |
316 | static inline void |
317 | tcf_exts_stats_update(const struct tcf_exts *exts, | |
318 | u64 bytes, u64 packets, u64 lastuse) | |
319 | { | |
320 | #ifdef CONFIG_NET_CLS_ACT | |
321 | int i; | |
322 | ||
323 | preempt_disable(); | |
324 | ||
325 | for (i = 0; i < exts->nr_actions; i++) { | |
326 | struct tc_action *a = exts->actions[i]; | |
327 | ||
328 | tcf_action_stats_update(a, bytes, packets, lastuse); | |
329 | } | |
330 | ||
331 | preempt_enable(); | |
332 | #endif | |
333 | } | |
334 | ||
3bcc0cec JP |
335 | /** |
336 | * tcf_exts_has_actions - check if at least one action is present | |
337 | * @exts: tc filter extensions handle | |
338 | * | |
339 | * Returns true if at least one action is present. | |
340 | */ | |
341 | static inline bool tcf_exts_has_actions(struct tcf_exts *exts) | |
342 | { | |
2734437e | 343 | #ifdef CONFIG_NET_CLS_ACT |
3bcc0cec JP |
344 | return exts->nr_actions; |
345 | #else | |
346 | return false; | |
347 | #endif | |
348 | } | |
2734437e | 349 | |
3bcc0cec JP |
350 | /** |
351 | * tcf_exts_has_one_action - check if exactly one action is present | |
352 | * @exts: tc filter extensions handle | |
353 | * | |
354 | * Returns true if exactly one action is present. | |
355 | */ | |
356 | static inline bool tcf_exts_has_one_action(struct tcf_exts *exts) | |
357 | { | |
358 | #ifdef CONFIG_NET_CLS_ACT | |
359 | return exts->nr_actions == 1; | |
360 | #else | |
361 | return false; | |
362 | #endif | |
363 | } | |
2734437e | 364 | |
af69afc5 JP |
365 | /** |
366 | * tcf_exts_exec - execute tc filter extensions | |
367 | * @skb: socket buffer | |
368 | * @exts: tc filter extensions handle | |
369 | * @res: desired result | |
370 | * | |
af089e70 | 371 | * Executes all configured extensions. Returns TC_ACT_OK on a normal execution, |
af69afc5 JP |
372 | * a negative number if the filter must be considered unmatched or |
373 | * a positive action code (TC_ACT_*) which must be returned to the | |
374 | * underlying layer. | |
375 | */ | |
376 | static inline int | |
377 | tcf_exts_exec(struct sk_buff *skb, struct tcf_exts *exts, | |
378 | struct tcf_result *res) | |
379 | { | |
380 | #ifdef CONFIG_NET_CLS_ACT | |
ec1a9cca | 381 | return tcf_action_exec(skb, exts->actions, exts->nr_actions, res); |
af69afc5 | 382 | #endif |
af089e70 | 383 | return TC_ACT_OK; |
af69afc5 JP |
384 | } |
385 | ||
5c15257f JP |
386 | int tcf_exts_validate(struct net *net, struct tcf_proto *tp, |
387 | struct nlattr **tb, struct nlattr *rate_tlv, | |
50a56190 AA |
388 | struct tcf_exts *exts, bool ovr, |
389 | struct netlink_ext_ack *extack); | |
18d0264f | 390 | void tcf_exts_destroy(struct tcf_exts *exts); |
9b0d4446 | 391 | void tcf_exts_change(struct tcf_exts *dst, struct tcf_exts *src); |
5da57f42 WC |
392 | int tcf_exts_dump(struct sk_buff *skb, struct tcf_exts *exts); |
393 | int tcf_exts_dump_stats(struct sk_buff *skb, struct tcf_exts *exts); | |
1da177e4 LT |
394 | |
395 | /** | |
396 | * struct tcf_pkt_info - packet information | |
397 | */ | |
fd2c3ef7 | 398 | struct tcf_pkt_info { |
1da177e4 LT |
399 | unsigned char * ptr; |
400 | int nexthdr; | |
401 | }; | |
402 | ||
403 | #ifdef CONFIG_NET_EMATCH | |
404 | ||
405 | struct tcf_ematch_ops; | |
406 | ||
407 | /** | |
408 | * struct tcf_ematch - extended match (ematch) | |
409 | * | |
410 | * @matchid: identifier to allow userspace to reidentify a match | |
411 | * @flags: flags specifying attributes and the relation to other matches | |
412 | * @ops: the operations lookup table of the corresponding ematch module | |
413 | * @datalen: length of the ematch specific configuration data | |
414 | * @data: ematch specific data | |
415 | */ | |
fd2c3ef7 | 416 | struct tcf_ematch { |
1da177e4 LT |
417 | struct tcf_ematch_ops * ops; |
418 | unsigned long data; | |
419 | unsigned int datalen; | |
420 | u16 matchid; | |
421 | u16 flags; | |
82a470f1 | 422 | struct net *net; |
1da177e4 LT |
423 | }; |
424 | ||
425 | static inline int tcf_em_is_container(struct tcf_ematch *em) | |
426 | { | |
427 | return !em->ops; | |
428 | } | |
429 | ||
430 | static inline int tcf_em_is_simple(struct tcf_ematch *em) | |
431 | { | |
432 | return em->flags & TCF_EM_SIMPLE; | |
433 | } | |
434 | ||
435 | static inline int tcf_em_is_inverted(struct tcf_ematch *em) | |
436 | { | |
437 | return em->flags & TCF_EM_INVERT; | |
438 | } | |
439 | ||
440 | static inline int tcf_em_last_match(struct tcf_ematch *em) | |
441 | { | |
442 | return (em->flags & TCF_EM_REL_MASK) == TCF_EM_REL_END; | |
443 | } | |
444 | ||
445 | static inline int tcf_em_early_end(struct tcf_ematch *em, int result) | |
446 | { | |
447 | if (tcf_em_last_match(em)) | |
448 | return 1; | |
449 | ||
450 | if (result == 0 && em->flags & TCF_EM_REL_AND) | |
451 | return 1; | |
452 | ||
453 | if (result != 0 && em->flags & TCF_EM_REL_OR) | |
454 | return 1; | |
455 | ||
456 | return 0; | |
457 | } | |
458 | ||
459 | /** | |
460 | * struct tcf_ematch_tree - ematch tree handle | |
461 | * | |
462 | * @hdr: ematch tree header supplied by userspace | |
463 | * @matches: array of ematches | |
464 | */ | |
fd2c3ef7 | 465 | struct tcf_ematch_tree { |
1da177e4 LT |
466 | struct tcf_ematch_tree_hdr hdr; |
467 | struct tcf_ematch * matches; | |
468 | ||
469 | }; | |
470 | ||
471 | /** | |
472 | * struct tcf_ematch_ops - ematch module operations | |
473 | * | |
474 | * @kind: identifier (kind) of this ematch module | |
475 | * @datalen: length of expected configuration data (optional) | |
476 | * @change: called during validation (optional) | |
477 | * @match: called during ematch tree evaluation, must return 1/0 | |
478 | * @destroy: called during destroyage (optional) | |
479 | * @dump: called during dumping process (optional) | |
480 | * @owner: owner, must be set to THIS_MODULE | |
481 | * @link: link to previous/next ematch module (internal use) | |
482 | */ | |
fd2c3ef7 | 483 | struct tcf_ematch_ops { |
1da177e4 LT |
484 | int kind; |
485 | int datalen; | |
82a470f1 | 486 | int (*change)(struct net *net, void *, |
1da177e4 LT |
487 | int, struct tcf_ematch *); |
488 | int (*match)(struct sk_buff *, struct tcf_ematch *, | |
489 | struct tcf_pkt_info *); | |
82a470f1 | 490 | void (*destroy)(struct tcf_ematch *); |
1da177e4 LT |
491 | int (*dump)(struct sk_buff *, struct tcf_ematch *); |
492 | struct module *owner; | |
493 | struct list_head link; | |
494 | }; | |
495 | ||
5c15257f JP |
496 | int tcf_em_register(struct tcf_ematch_ops *); |
497 | void tcf_em_unregister(struct tcf_ematch_ops *); | |
498 | int tcf_em_tree_validate(struct tcf_proto *, struct nlattr *, | |
499 | struct tcf_ematch_tree *); | |
82a470f1 | 500 | void tcf_em_tree_destroy(struct tcf_ematch_tree *); |
5c15257f JP |
501 | int tcf_em_tree_dump(struct sk_buff *, struct tcf_ematch_tree *, int); |
502 | int __tcf_em_tree_match(struct sk_buff *, struct tcf_ematch_tree *, | |
503 | struct tcf_pkt_info *); | |
1da177e4 | 504 | |
1da177e4 LT |
505 | /** |
506 | * tcf_em_tree_match - evaulate an ematch tree | |
507 | * | |
508 | * @skb: socket buffer of the packet in question | |
509 | * @tree: ematch tree to be used for evaluation | |
510 | * @info: packet information examined by classifier | |
511 | * | |
512 | * This function matches @skb against the ematch tree in @tree by going | |
513 | * through all ematches respecting their logic relations returning | |
514 | * as soon as the result is obvious. | |
515 | * | |
516 | * Returns 1 if the ematch tree as-one matches, no ematches are configured | |
517 | * or ematch is not enabled in the kernel, otherwise 0 is returned. | |
518 | */ | |
519 | static inline int tcf_em_tree_match(struct sk_buff *skb, | |
520 | struct tcf_ematch_tree *tree, | |
521 | struct tcf_pkt_info *info) | |
522 | { | |
523 | if (tree->hdr.nmatches) | |
524 | return __tcf_em_tree_match(skb, tree, info); | |
525 | else | |
526 | return 1; | |
527 | } | |
528 | ||
db3d99c0 PM |
529 | #define MODULE_ALIAS_TCF_EMATCH(kind) MODULE_ALIAS("ematch-kind-" __stringify(kind)) |
530 | ||
1da177e4 LT |
531 | #else /* CONFIG_NET_EMATCH */ |
532 | ||
fd2c3ef7 | 533 | struct tcf_ematch_tree { |
1da177e4 LT |
534 | }; |
535 | ||
536 | #define tcf_em_tree_validate(tp, tb, t) ((void)(t), 0) | |
82a470f1 | 537 | #define tcf_em_tree_destroy(t) do { (void)(t); } while(0) |
1da177e4 | 538 | #define tcf_em_tree_dump(skb, t, tlv) (0) |
1da177e4 LT |
539 | #define tcf_em_tree_match(skb, t, info) ((void)(info), 1) |
540 | ||
541 | #endif /* CONFIG_NET_EMATCH */ | |
542 | ||
543 | static inline unsigned char * tcf_get_base_ptr(struct sk_buff *skb, int layer) | |
544 | { | |
545 | switch (layer) { | |
546 | case TCF_LAYER_LINK: | |
d3303a65 | 547 | return skb_mac_header(skb); |
1da177e4 | 548 | case TCF_LAYER_NETWORK: |
d56f90a7 | 549 | return skb_network_header(skb); |
1da177e4 | 550 | case TCF_LAYER_TRANSPORT: |
9c70220b | 551 | return skb_transport_header(skb); |
1da177e4 LT |
552 | } |
553 | ||
554 | return NULL; | |
555 | } | |
556 | ||
eddc9ec5 ACM |
557 | static inline int tcf_valid_offset(const struct sk_buff *skb, |
558 | const unsigned char *ptr, const int len) | |
1da177e4 | 559 | { |
da521b2c DM |
560 | return likely((ptr + len) <= skb_tail_pointer(skb) && |
561 | ptr >= skb->head && | |
562 | (ptr <= (ptr + len))); | |
1da177e4 LT |
563 | } |
564 | ||
565 | #ifdef CONFIG_NET_CLS_IND | |
0eeb8ffc DL |
566 | #include <net/net_namespace.h> |
567 | ||
1da177e4 | 568 | static inline int |
1057c55f AA |
569 | tcf_change_indev(struct net *net, struct nlattr *indev_tlv, |
570 | struct netlink_ext_ack *extack) | |
1da177e4 | 571 | { |
2519a602 WC |
572 | char indev[IFNAMSIZ]; |
573 | struct net_device *dev; | |
574 | ||
1057c55f AA |
575 | if (nla_strlcpy(indev, indev_tlv, IFNAMSIZ) >= IFNAMSIZ) { |
576 | NL_SET_ERR_MSG(extack, "Interface name too long"); | |
1da177e4 | 577 | return -EINVAL; |
1057c55f | 578 | } |
2519a602 WC |
579 | dev = __dev_get_by_name(net, indev); |
580 | if (!dev) | |
581 | return -ENODEV; | |
582 | return dev->ifindex; | |
1da177e4 LT |
583 | } |
584 | ||
2519a602 WC |
585 | static inline bool |
586 | tcf_match_indev(struct sk_buff *skb, int ifindex) | |
1da177e4 | 587 | { |
2519a602 WC |
588 | if (!ifindex) |
589 | return true; | |
590 | if (!skb->skb_iif) | |
591 | return false; | |
592 | return ifindex == skb->skb_iif; | |
1da177e4 LT |
593 | } |
594 | #endif /* CONFIG_NET_CLS_IND */ | |
595 | ||
208c0f4b JP |
596 | int tc_setup_cb_call(struct tcf_block *block, struct tcf_exts *exts, |
597 | enum tc_setup_type type, void *type_data, bool err_stop); | |
717503b9 | 598 | |
8c4083b3 JP |
599 | enum tc_block_command { |
600 | TC_BLOCK_BIND, | |
601 | TC_BLOCK_UNBIND, | |
602 | }; | |
603 | ||
604 | struct tc_block_offload { | |
605 | enum tc_block_command command; | |
606 | enum tcf_block_binder_type binder_type; | |
607 | struct tcf_block *block; | |
60513bd8 | 608 | struct netlink_ext_ack *extack; |
8c4083b3 JP |
609 | }; |
610 | ||
5fd9fc4e | 611 | struct tc_cls_common_offload { |
5fd9fc4e JP |
612 | u32 chain_index; |
613 | __be16 protocol; | |
d7c1c8d2 | 614 | u32 prio; |
8f0b425a | 615 | struct netlink_ext_ack *extack; |
5fd9fc4e JP |
616 | }; |
617 | ||
a1b7c5fd JF |
618 | struct tc_cls_u32_knode { |
619 | struct tcf_exts *exts; | |
e014860e | 620 | struct tc_u32_sel *sel; |
a1b7c5fd JF |
621 | u32 handle; |
622 | u32 val; | |
623 | u32 mask; | |
624 | u32 link_handle; | |
e014860e | 625 | u8 fshift; |
a1b7c5fd JF |
626 | }; |
627 | ||
628 | struct tc_cls_u32_hnode { | |
629 | u32 handle; | |
630 | u32 prio; | |
631 | unsigned int divisor; | |
632 | }; | |
633 | ||
634 | enum tc_clsu32_command { | |
635 | TC_CLSU32_NEW_KNODE, | |
636 | TC_CLSU32_REPLACE_KNODE, | |
637 | TC_CLSU32_DELETE_KNODE, | |
638 | TC_CLSU32_NEW_HNODE, | |
639 | TC_CLSU32_REPLACE_HNODE, | |
640 | TC_CLSU32_DELETE_HNODE, | |
641 | }; | |
642 | ||
643 | struct tc_cls_u32_offload { | |
5fd9fc4e | 644 | struct tc_cls_common_offload common; |
a1b7c5fd JF |
645 | /* knode values */ |
646 | enum tc_clsu32_command command; | |
647 | union { | |
648 | struct tc_cls_u32_knode knode; | |
649 | struct tc_cls_u32_hnode hnode; | |
650 | }; | |
651 | }; | |
652 | ||
7b06e8ae | 653 | static inline bool tc_can_offload(const struct net_device *dev) |
6843e7a2 | 654 | { |
70b5aee4 | 655 | return dev->features & NETIF_F_HW_TC; |
6843e7a2 JF |
656 | } |
657 | ||
f9eda14f QM |
658 | static inline bool tc_can_offload_extack(const struct net_device *dev, |
659 | struct netlink_ext_ack *extack) | |
660 | { | |
661 | bool can = tc_can_offload(dev); | |
662 | ||
663 | if (!can) | |
664 | NL_SET_ERR_MSG(extack, "TC offload is disabled on net device"); | |
665 | ||
666 | return can; | |
667 | } | |
668 | ||
878db9f0 JK |
669 | static inline bool |
670 | tc_cls_can_offload_and_chain0(const struct net_device *dev, | |
671 | struct tc_cls_common_offload *common) | |
672 | { | |
673 | if (!tc_can_offload_extack(dev, common->extack)) | |
674 | return false; | |
675 | if (common->chain_index) { | |
676 | NL_SET_ERR_MSG(common->extack, | |
677 | "Driver supports only offload of chain 0"); | |
678 | return false; | |
679 | } | |
680 | return true; | |
681 | } | |
682 | ||
55330f05 HHZ |
683 | static inline bool tc_skip_hw(u32 flags) |
684 | { | |
685 | return (flags & TCA_CLS_FLAGS_SKIP_HW) ? true : false; | |
686 | } | |
687 | ||
d34e3e18 SS |
688 | static inline bool tc_skip_sw(u32 flags) |
689 | { | |
690 | return (flags & TCA_CLS_FLAGS_SKIP_SW) ? true : false; | |
691 | } | |
692 | ||
693 | /* SKIP_HW and SKIP_SW are mutually exclusive flags. */ | |
694 | static inline bool tc_flags_valid(u32 flags) | |
695 | { | |
81c7288b MRL |
696 | if (flags & ~(TCA_CLS_FLAGS_SKIP_HW | TCA_CLS_FLAGS_SKIP_SW | |
697 | TCA_CLS_FLAGS_VERBOSE)) | |
d34e3e18 SS |
698 | return false; |
699 | ||
81c7288b | 700 | flags &= TCA_CLS_FLAGS_SKIP_HW | TCA_CLS_FLAGS_SKIP_SW; |
d34e3e18 SS |
701 | if (!(flags ^ (TCA_CLS_FLAGS_SKIP_HW | TCA_CLS_FLAGS_SKIP_SW))) |
702 | return false; | |
703 | ||
704 | return true; | |
705 | } | |
706 | ||
e696028a OG |
707 | static inline bool tc_in_hw(u32 flags) |
708 | { | |
709 | return (flags & TCA_CLS_FLAGS_IN_HW) ? true : false; | |
710 | } | |
711 | ||
34832e1c JK |
712 | static inline void |
713 | tc_cls_common_offload_init(struct tc_cls_common_offload *cls_common, | |
714 | const struct tcf_proto *tp, u32 flags, | |
715 | struct netlink_ext_ack *extack) | |
716 | { | |
717 | cls_common->chain_index = tp->chain->index; | |
718 | cls_common->protocol = tp->protocol; | |
719 | cls_common->prio = tp->prio; | |
81c7288b | 720 | if (tc_skip_sw(flags) || flags & TCA_CLS_FLAGS_VERBOSE) |
34832e1c JK |
721 | cls_common->extack = extack; |
722 | } | |
723 | ||
5b33f488 AV |
724 | enum tc_fl_command { |
725 | TC_CLSFLOWER_REPLACE, | |
726 | TC_CLSFLOWER_DESTROY, | |
10cbc684 | 727 | TC_CLSFLOWER_STATS, |
5b33f488 AV |
728 | }; |
729 | ||
730 | struct tc_cls_flower_offload { | |
5fd9fc4e | 731 | struct tc_cls_common_offload common; |
5b33f488 | 732 | enum tc_fl_command command; |
8208d21b | 733 | unsigned long cookie; |
5b33f488 AV |
734 | struct flow_dissector *dissector; |
735 | struct fl_flow_key *mask; | |
736 | struct fl_flow_key *key; | |
737 | struct tcf_exts *exts; | |
384c181e | 738 | u32 classid; |
5b33f488 AV |
739 | }; |
740 | ||
b87f7936 YG |
741 | enum tc_matchall_command { |
742 | TC_CLSMATCHALL_REPLACE, | |
743 | TC_CLSMATCHALL_DESTROY, | |
744 | }; | |
745 | ||
746 | struct tc_cls_matchall_offload { | |
5fd9fc4e | 747 | struct tc_cls_common_offload common; |
b87f7936 YG |
748 | enum tc_matchall_command command; |
749 | struct tcf_exts *exts; | |
750 | unsigned long cookie; | |
751 | }; | |
752 | ||
332ae8e2 | 753 | enum tc_clsbpf_command { |
102740bd | 754 | TC_CLSBPF_OFFLOAD, |
68d64063 | 755 | TC_CLSBPF_STATS, |
332ae8e2 JK |
756 | }; |
757 | ||
758 | struct tc_cls_bpf_offload { | |
5fd9fc4e | 759 | struct tc_cls_common_offload common; |
332ae8e2 JK |
760 | enum tc_clsbpf_command command; |
761 | struct tcf_exts *exts; | |
762 | struct bpf_prog *prog; | |
102740bd | 763 | struct bpf_prog *oldprog; |
332ae8e2 JK |
764 | const char *name; |
765 | bool exts_integrated; | |
766 | }; | |
767 | ||
4e8b86c0 AN |
768 | struct tc_mqprio_qopt_offload { |
769 | /* struct tc_mqprio_qopt must always be the first element */ | |
770 | struct tc_mqprio_qopt qopt; | |
771 | u16 mode; | |
772 | u16 shaper; | |
773 | u32 flags; | |
774 | u64 min_rate[TC_QOPT_MAX_QUEUE]; | |
775 | u64 max_rate[TC_QOPT_MAX_QUEUE]; | |
776 | }; | |
1045ba77 JHS |
777 | |
778 | /* This structure holds cookie structure that is passed from user | |
779 | * to the kernel for actions and classifiers | |
780 | */ | |
781 | struct tc_cookie { | |
782 | u8 *data; | |
783 | u32 len; | |
784 | }; | |
602f3baf | 785 | |
f34b4aac NF |
786 | struct tc_qopt_offload_stats { |
787 | struct gnet_stats_basic_packed *bstats; | |
788 | struct gnet_stats_queue *qstats; | |
789 | }; | |
790 | ||
f971b132 JK |
791 | enum tc_mq_command { |
792 | TC_MQ_CREATE, | |
793 | TC_MQ_DESTROY, | |
47c669a4 | 794 | TC_MQ_STATS, |
f971b132 JK |
795 | }; |
796 | ||
797 | struct tc_mq_qopt_offload { | |
798 | enum tc_mq_command command; | |
799 | u32 handle; | |
47c669a4 | 800 | struct tc_qopt_offload_stats stats; |
f971b132 JK |
801 | }; |
802 | ||
602f3baf NF |
803 | enum tc_red_command { |
804 | TC_RED_REPLACE, | |
805 | TC_RED_DESTROY, | |
806 | TC_RED_STATS, | |
807 | TC_RED_XSTATS, | |
808 | }; | |
809 | ||
810 | struct tc_red_qopt_offload_params { | |
811 | u32 min; | |
812 | u32 max; | |
813 | u32 probability; | |
814 | bool is_ecn; | |
416ef9b1 | 815 | struct gnet_stats_queue *qstats; |
602f3baf | 816 | }; |
602f3baf NF |
817 | |
818 | struct tc_red_qopt_offload { | |
819 | enum tc_red_command command; | |
820 | u32 handle; | |
821 | u32 parent; | |
822 | union { | |
823 | struct tc_red_qopt_offload_params set; | |
f34b4aac | 824 | struct tc_qopt_offload_stats stats; |
602f3baf NF |
825 | struct red_stats *xstats; |
826 | }; | |
827 | }; | |
828 | ||
7fdb61b4 NF |
829 | enum tc_prio_command { |
830 | TC_PRIO_REPLACE, | |
831 | TC_PRIO_DESTROY, | |
832 | TC_PRIO_STATS, | |
b9c7a7ac | 833 | TC_PRIO_GRAFT, |
7fdb61b4 NF |
834 | }; |
835 | ||
836 | struct tc_prio_qopt_offload_params { | |
837 | int bands; | |
838 | u8 priomap[TC_PRIO_MAX + 1]; | |
839 | /* In case that a prio qdisc is offloaded and now is changed to a | |
840 | * non-offloadedable config, it needs to update the backlog & qlen | |
841 | * values to negate the HW backlog & qlen values (and only them). | |
842 | */ | |
843 | struct gnet_stats_queue *qstats; | |
844 | }; | |
845 | ||
b9c7a7ac NF |
846 | struct tc_prio_qopt_offload_graft_params { |
847 | u8 band; | |
848 | u32 child_handle; | |
849 | }; | |
850 | ||
7fdb61b4 NF |
851 | struct tc_prio_qopt_offload { |
852 | enum tc_prio_command command; | |
853 | u32 handle; | |
854 | u32 parent; | |
855 | union { | |
856 | struct tc_prio_qopt_offload_params replace_params; | |
857 | struct tc_qopt_offload_stats stats; | |
b9c7a7ac | 858 | struct tc_prio_qopt_offload_graft_params graft_params; |
7fdb61b4 NF |
859 | }; |
860 | }; | |
b9c7a7ac | 861 | |
1da177e4 | 862 | #endif |