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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> | |
a5148626 | 9 | #include <net/net_namespace.h> |
1da177e4 | 10 | |
cd11b164 | 11 | /* TC action not accessible from user space */ |
720f22fe | 12 | #define TC_ACT_CONSUMED (TC_ACT_VALUE_MAX + 1) |
cd11b164 | 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 | 28 | struct tcf_block_ext_info { |
32f8c409 | 29 | enum flow_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 |
1f3ed383 JP |
39 | struct tcf_chain *tcf_chain_get_by_act(struct tcf_block *block, |
40 | u32 chain_index); | |
1f3ed383 | 41 | void tcf_chain_put_by_act(struct tcf_chain *chain); |
bbf73830 VB |
42 | struct tcf_chain *tcf_get_next_chain(struct tcf_block *block, |
43 | struct tcf_chain *chain); | |
fe2923af | 44 | struct tcf_proto *tcf_get_next_proto(struct tcf_chain *chain, |
12db03b6 | 45 | struct tcf_proto *tp, bool rtnl_held); |
f36fe1c4 | 46 | void tcf_block_netif_keep_dst(struct tcf_block *block); |
6529eaba | 47 | int tcf_block_get(struct tcf_block **p_block, |
8d1a77f9 AA |
48 | struct tcf_proto __rcu **p_filter_chain, struct Qdisc *q, |
49 | struct netlink_ext_ack *extack); | |
c7eb7d72 | 50 | int tcf_block_get_ext(struct tcf_block **p_block, struct Qdisc *q, |
8d1a77f9 AA |
51 | struct tcf_block_ext_info *ei, |
52 | struct netlink_ext_ack *extack); | |
6529eaba | 53 | void tcf_block_put(struct tcf_block *block); |
c7eb7d72 | 54 | void tcf_block_put_ext(struct tcf_block *block, struct Qdisc *q, |
8c4083b3 | 55 | struct tcf_block_ext_info *ei); |
44186460 | 56 | |
48617387 JP |
57 | static inline bool tcf_block_shared(struct tcf_block *block) |
58 | { | |
59 | return block->index; | |
60 | } | |
61 | ||
c1a970d0 VB |
62 | static inline bool tcf_block_non_null_shared(struct tcf_block *block) |
63 | { | |
64 | return block && block->index; | |
65 | } | |
66 | ||
44186460 JP |
67 | static inline struct Qdisc *tcf_block_q(struct tcf_block *block) |
68 | { | |
48617387 | 69 | WARN_ON(tcf_block_shared(block)); |
44186460 JP |
70 | return block->q; |
71 | } | |
72 | ||
7f76fa36 JH |
73 | int __tc_indr_block_cb_register(struct net_device *dev, void *cb_priv, |
74 | tc_indr_block_bind_cb_t *cb, void *cb_ident); | |
75 | int tc_indr_block_cb_register(struct net_device *dev, void *cb_priv, | |
76 | tc_indr_block_bind_cb_t *cb, void *cb_ident); | |
77 | void __tc_indr_block_cb_unregister(struct net_device *dev, | |
78 | tc_indr_block_bind_cb_t *cb, void *cb_ident); | |
79 | void tc_indr_block_cb_unregister(struct net_device *dev, | |
80 | tc_indr_block_bind_cb_t *cb, void *cb_ident); | |
acb67442 | 81 | |
87d83093 JP |
82 | int tcf_classify(struct sk_buff *skb, const struct tcf_proto *tp, |
83 | struct tcf_result *res, bool compat_mode); | |
84 | ||
8ae70032 | 85 | #else |
88c44a52 PJV |
86 | static inline bool tcf_block_shared(struct tcf_block *block) |
87 | { | |
88 | return false; | |
89 | } | |
90 | ||
c1a970d0 VB |
91 | static inline bool tcf_block_non_null_shared(struct tcf_block *block) |
92 | { | |
93 | return false; | |
94 | } | |
95 | ||
6529eaba JP |
96 | static inline |
97 | int tcf_block_get(struct tcf_block **p_block, | |
3c149091 SM |
98 | struct tcf_proto __rcu **p_filter_chain, struct Qdisc *q, |
99 | struct netlink_ext_ack *extack) | |
6529eaba JP |
100 | { |
101 | return 0; | |
102 | } | |
103 | ||
8c4083b3 | 104 | static inline |
c7eb7d72 | 105 | int tcf_block_get_ext(struct tcf_block **p_block, struct Qdisc *q, |
33c30a8b QM |
106 | struct tcf_block_ext_info *ei, |
107 | struct netlink_ext_ack *extack) | |
8c4083b3 JP |
108 | { |
109 | return 0; | |
110 | } | |
111 | ||
6529eaba | 112 | static inline void tcf_block_put(struct tcf_block *block) |
8ae70032 JP |
113 | { |
114 | } | |
87d83093 | 115 | |
8c4083b3 | 116 | static inline |
c7eb7d72 | 117 | void tcf_block_put_ext(struct tcf_block *block, struct Qdisc *q, |
8c4083b3 JP |
118 | struct tcf_block_ext_info *ei) |
119 | { | |
120 | } | |
121 | ||
44186460 JP |
122 | static inline struct Qdisc *tcf_block_q(struct tcf_block *block) |
123 | { | |
124 | return NULL; | |
125 | } | |
126 | ||
acb67442 | 127 | static inline |
a7323311 | 128 | int tc_setup_cb_block_register(struct tcf_block *block, flow_setup_cb_t *cb, |
acb67442 JP |
129 | void *cb_priv) |
130 | { | |
131 | return 0; | |
132 | } | |
133 | ||
134 | static inline | |
a7323311 | 135 | void tc_setup_cb_block_unregister(struct tcf_block *block, flow_setup_cb_t *cb, |
acb67442 JP |
136 | void *cb_priv) |
137 | { | |
138 | } | |
139 | ||
7f76fa36 JH |
140 | static inline |
141 | int __tc_indr_block_cb_register(struct net_device *dev, void *cb_priv, | |
142 | tc_indr_block_bind_cb_t *cb, void *cb_ident) | |
143 | { | |
144 | return 0; | |
145 | } | |
146 | ||
147 | static inline | |
148 | int tc_indr_block_cb_register(struct net_device *dev, void *cb_priv, | |
149 | tc_indr_block_bind_cb_t *cb, void *cb_ident) | |
150 | { | |
151 | return 0; | |
152 | } | |
153 | ||
154 | static inline | |
155 | void __tc_indr_block_cb_unregister(struct net_device *dev, | |
156 | tc_indr_block_bind_cb_t *cb, void *cb_ident) | |
157 | { | |
158 | } | |
159 | ||
160 | static inline | |
161 | void tc_indr_block_cb_unregister(struct net_device *dev, | |
162 | tc_indr_block_bind_cb_t *cb, void *cb_ident) | |
163 | { | |
164 | } | |
165 | ||
87d83093 JP |
166 | static inline int tcf_classify(struct sk_buff *skb, const struct tcf_proto *tp, |
167 | struct tcf_result *res, bool compat_mode) | |
168 | { | |
169 | return TC_ACT_UNSPEC; | |
170 | } | |
8ae70032 | 171 | #endif |
cf1facda | 172 | |
1da177e4 LT |
173 | static inline unsigned long |
174 | __cls_set_class(unsigned long *clp, unsigned long cl) | |
175 | { | |
a0efb80c | 176 | return xchg(clp, cl); |
1da177e4 LT |
177 | } |
178 | ||
179 | static inline unsigned long | |
34e3759c | 180 | cls_set_class(struct Qdisc *q, unsigned long *clp, unsigned long cl) |
1da177e4 LT |
181 | { |
182 | unsigned long old_cl; | |
34e3759c JP |
183 | |
184 | sch_tree_lock(q); | |
1da177e4 | 185 | old_cl = __cls_set_class(clp, cl); |
34e3759c | 186 | sch_tree_unlock(q); |
1da177e4 LT |
187 | return old_cl; |
188 | } | |
189 | ||
190 | static inline void | |
191 | tcf_bind_filter(struct tcf_proto *tp, struct tcf_result *r, unsigned long base) | |
192 | { | |
34e3759c | 193 | struct Qdisc *q = tp->chain->block->q; |
1da177e4 LT |
194 | unsigned long cl; |
195 | ||
34e3759c JP |
196 | /* Check q as it is not set for shared blocks. In that case, |
197 | * setting class is not supported. | |
198 | */ | |
199 | if (!q) | |
200 | return; | |
201 | cl = q->ops->cl_ops->bind_tcf(q, base, r->classid); | |
202 | cl = cls_set_class(q, &r->class, cl); | |
1da177e4 | 203 | if (cl) |
34e3759c | 204 | q->ops->cl_ops->unbind_tcf(q, cl); |
1da177e4 LT |
205 | } |
206 | ||
207 | static inline void | |
208 | tcf_unbind_filter(struct tcf_proto *tp, struct tcf_result *r) | |
209 | { | |
34e3759c | 210 | struct Qdisc *q = tp->chain->block->q; |
1da177e4 LT |
211 | unsigned long cl; |
212 | ||
34e3759c JP |
213 | if (!q) |
214 | return; | |
1da177e4 | 215 | if ((cl = __cls_set_class(&r->class, 0)) != 0) |
34e3759c | 216 | q->ops->cl_ops->unbind_tcf(q, cl); |
1da177e4 LT |
217 | } |
218 | ||
fd2c3ef7 | 219 | struct tcf_exts { |
1da177e4 | 220 | #ifdef CONFIG_NET_CLS_ACT |
33be6271 | 221 | __u32 type; /* for backward compat(TCA_OLD_COMPAT) */ |
22dc13c8 WC |
222 | int nr_actions; |
223 | struct tc_action **actions; | |
e4b95c41 | 224 | struct net *net; |
1da177e4 | 225 | #endif |
5da57f42 WC |
226 | /* Map to export classifier specific extension TLV types to the |
227 | * generic extensions API. Unsupported extensions must be set to 0. | |
228 | */ | |
1da177e4 LT |
229 | int action; |
230 | int police; | |
231 | }; | |
232 | ||
14215108 CW |
233 | static inline int tcf_exts_init(struct tcf_exts *exts, struct net *net, |
234 | int action, int police) | |
33be6271 WC |
235 | { |
236 | #ifdef CONFIG_NET_CLS_ACT | |
5da57f42 | 237 | exts->type = 0; |
22dc13c8 | 238 | exts->nr_actions = 0; |
14215108 | 239 | exts->net = net; |
22dc13c8 WC |
240 | exts->actions = kcalloc(TCA_ACT_MAX_PRIO, sizeof(struct tc_action *), |
241 | GFP_KERNEL); | |
b9a24bb7 WC |
242 | if (!exts->actions) |
243 | return -ENOMEM; | |
33be6271 | 244 | #endif |
5da57f42 WC |
245 | exts->action = action; |
246 | exts->police = police; | |
b9a24bb7 | 247 | return 0; |
33be6271 WC |
248 | } |
249 | ||
e4b95c41 CW |
250 | /* Return false if the netns is being destroyed in cleanup_net(). Callers |
251 | * need to do cleanup synchronously in this case, otherwise may race with | |
252 | * tc_action_net_exit(). Return true for other cases. | |
253 | */ | |
254 | static inline bool tcf_exts_get_net(struct tcf_exts *exts) | |
255 | { | |
256 | #ifdef CONFIG_NET_CLS_ACT | |
257 | exts->net = maybe_get_net(exts->net); | |
258 | return exts->net != NULL; | |
259 | #else | |
260 | return true; | |
261 | #endif | |
262 | } | |
263 | ||
264 | static inline void tcf_exts_put_net(struct tcf_exts *exts) | |
265 | { | |
266 | #ifdef CONFIG_NET_CLS_ACT | |
267 | if (exts->net) | |
268 | put_net(exts->net); | |
269 | #endif | |
270 | } | |
271 | ||
22dc13c8 | 272 | #ifdef CONFIG_NET_CLS_ACT |
244cd96a CW |
273 | #define tcf_exts_for_each_action(i, a, exts) \ |
274 | for (i = 0; i < TCA_ACT_MAX_PRIO && ((a) = (exts)->actions[i]); i++) | |
275 | #else | |
276 | #define tcf_exts_for_each_action(i, a, exts) \ | |
191672ca | 277 | for (; 0; (void)(i), (void)(a), (void)(exts)) |
22dc13c8 | 278 | #endif |
22dc13c8 | 279 | |
d897a638 JK |
280 | static inline void |
281 | tcf_exts_stats_update(const struct tcf_exts *exts, | |
282 | u64 bytes, u64 packets, u64 lastuse) | |
283 | { | |
284 | #ifdef CONFIG_NET_CLS_ACT | |
285 | int i; | |
286 | ||
287 | preempt_disable(); | |
288 | ||
289 | for (i = 0; i < exts->nr_actions; i++) { | |
290 | struct tc_action *a = exts->actions[i]; | |
291 | ||
28169aba | 292 | tcf_action_stats_update(a, bytes, packets, lastuse, true); |
d897a638 JK |
293 | } |
294 | ||
295 | preempt_enable(); | |
296 | #endif | |
297 | } | |
298 | ||
3bcc0cec JP |
299 | /** |
300 | * tcf_exts_has_actions - check if at least one action is present | |
301 | * @exts: tc filter extensions handle | |
302 | * | |
303 | * Returns true if at least one action is present. | |
304 | */ | |
305 | static inline bool tcf_exts_has_actions(struct tcf_exts *exts) | |
306 | { | |
2734437e | 307 | #ifdef CONFIG_NET_CLS_ACT |
3bcc0cec JP |
308 | return exts->nr_actions; |
309 | #else | |
310 | return false; | |
311 | #endif | |
312 | } | |
2734437e | 313 | |
af69afc5 JP |
314 | /** |
315 | * tcf_exts_exec - execute tc filter extensions | |
316 | * @skb: socket buffer | |
317 | * @exts: tc filter extensions handle | |
318 | * @res: desired result | |
319 | * | |
af089e70 | 320 | * Executes all configured extensions. Returns TC_ACT_OK on a normal execution, |
af69afc5 JP |
321 | * a negative number if the filter must be considered unmatched or |
322 | * a positive action code (TC_ACT_*) which must be returned to the | |
323 | * underlying layer. | |
324 | */ | |
325 | static inline int | |
326 | tcf_exts_exec(struct sk_buff *skb, struct tcf_exts *exts, | |
327 | struct tcf_result *res) | |
328 | { | |
329 | #ifdef CONFIG_NET_CLS_ACT | |
ec1a9cca | 330 | return tcf_action_exec(skb, exts->actions, exts->nr_actions, res); |
af69afc5 | 331 | #endif |
af089e70 | 332 | return TC_ACT_OK; |
af69afc5 JP |
333 | } |
334 | ||
5c15257f JP |
335 | int tcf_exts_validate(struct net *net, struct tcf_proto *tp, |
336 | struct nlattr **tb, struct nlattr *rate_tlv, | |
ec6743a1 | 337 | struct tcf_exts *exts, bool ovr, bool rtnl_held, |
50a56190 | 338 | struct netlink_ext_ack *extack); |
18d0264f | 339 | void tcf_exts_destroy(struct tcf_exts *exts); |
9b0d4446 | 340 | void tcf_exts_change(struct tcf_exts *dst, struct tcf_exts *src); |
5da57f42 WC |
341 | int tcf_exts_dump(struct sk_buff *skb, struct tcf_exts *exts); |
342 | int tcf_exts_dump_stats(struct sk_buff *skb, struct tcf_exts *exts); | |
1da177e4 LT |
343 | |
344 | /** | |
345 | * struct tcf_pkt_info - packet information | |
346 | */ | |
fd2c3ef7 | 347 | struct tcf_pkt_info { |
1da177e4 LT |
348 | unsigned char * ptr; |
349 | int nexthdr; | |
350 | }; | |
351 | ||
352 | #ifdef CONFIG_NET_EMATCH | |
353 | ||
354 | struct tcf_ematch_ops; | |
355 | ||
356 | /** | |
357 | * struct tcf_ematch - extended match (ematch) | |
358 | * | |
359 | * @matchid: identifier to allow userspace to reidentify a match | |
360 | * @flags: flags specifying attributes and the relation to other matches | |
361 | * @ops: the operations lookup table of the corresponding ematch module | |
362 | * @datalen: length of the ematch specific configuration data | |
363 | * @data: ematch specific data | |
364 | */ | |
fd2c3ef7 | 365 | struct tcf_ematch { |
1da177e4 LT |
366 | struct tcf_ematch_ops * ops; |
367 | unsigned long data; | |
368 | unsigned int datalen; | |
369 | u16 matchid; | |
370 | u16 flags; | |
82a470f1 | 371 | struct net *net; |
1da177e4 LT |
372 | }; |
373 | ||
374 | static inline int tcf_em_is_container(struct tcf_ematch *em) | |
375 | { | |
376 | return !em->ops; | |
377 | } | |
378 | ||
379 | static inline int tcf_em_is_simple(struct tcf_ematch *em) | |
380 | { | |
381 | return em->flags & TCF_EM_SIMPLE; | |
382 | } | |
383 | ||
384 | static inline int tcf_em_is_inverted(struct tcf_ematch *em) | |
385 | { | |
386 | return em->flags & TCF_EM_INVERT; | |
387 | } | |
388 | ||
389 | static inline int tcf_em_last_match(struct tcf_ematch *em) | |
390 | { | |
391 | return (em->flags & TCF_EM_REL_MASK) == TCF_EM_REL_END; | |
392 | } | |
393 | ||
394 | static inline int tcf_em_early_end(struct tcf_ematch *em, int result) | |
395 | { | |
396 | if (tcf_em_last_match(em)) | |
397 | return 1; | |
398 | ||
399 | if (result == 0 && em->flags & TCF_EM_REL_AND) | |
400 | return 1; | |
401 | ||
402 | if (result != 0 && em->flags & TCF_EM_REL_OR) | |
403 | return 1; | |
404 | ||
405 | return 0; | |
406 | } | |
407 | ||
408 | /** | |
409 | * struct tcf_ematch_tree - ematch tree handle | |
410 | * | |
411 | * @hdr: ematch tree header supplied by userspace | |
412 | * @matches: array of ematches | |
413 | */ | |
fd2c3ef7 | 414 | struct tcf_ematch_tree { |
1da177e4 LT |
415 | struct tcf_ematch_tree_hdr hdr; |
416 | struct tcf_ematch * matches; | |
417 | ||
418 | }; | |
419 | ||
420 | /** | |
421 | * struct tcf_ematch_ops - ematch module operations | |
422 | * | |
423 | * @kind: identifier (kind) of this ematch module | |
424 | * @datalen: length of expected configuration data (optional) | |
425 | * @change: called during validation (optional) | |
426 | * @match: called during ematch tree evaluation, must return 1/0 | |
427 | * @destroy: called during destroyage (optional) | |
428 | * @dump: called during dumping process (optional) | |
429 | * @owner: owner, must be set to THIS_MODULE | |
430 | * @link: link to previous/next ematch module (internal use) | |
431 | */ | |
fd2c3ef7 | 432 | struct tcf_ematch_ops { |
1da177e4 LT |
433 | int kind; |
434 | int datalen; | |
82a470f1 | 435 | int (*change)(struct net *net, void *, |
1da177e4 LT |
436 | int, struct tcf_ematch *); |
437 | int (*match)(struct sk_buff *, struct tcf_ematch *, | |
438 | struct tcf_pkt_info *); | |
82a470f1 | 439 | void (*destroy)(struct tcf_ematch *); |
1da177e4 LT |
440 | int (*dump)(struct sk_buff *, struct tcf_ematch *); |
441 | struct module *owner; | |
442 | struct list_head link; | |
443 | }; | |
444 | ||
5c15257f JP |
445 | int tcf_em_register(struct tcf_ematch_ops *); |
446 | void tcf_em_unregister(struct tcf_ematch_ops *); | |
447 | int tcf_em_tree_validate(struct tcf_proto *, struct nlattr *, | |
448 | struct tcf_ematch_tree *); | |
82a470f1 | 449 | void tcf_em_tree_destroy(struct tcf_ematch_tree *); |
5c15257f JP |
450 | int tcf_em_tree_dump(struct sk_buff *, struct tcf_ematch_tree *, int); |
451 | int __tcf_em_tree_match(struct sk_buff *, struct tcf_ematch_tree *, | |
452 | struct tcf_pkt_info *); | |
1da177e4 | 453 | |
1da177e4 LT |
454 | /** |
455 | * tcf_em_tree_match - evaulate an ematch tree | |
456 | * | |
457 | * @skb: socket buffer of the packet in question | |
458 | * @tree: ematch tree to be used for evaluation | |
459 | * @info: packet information examined by classifier | |
460 | * | |
461 | * This function matches @skb against the ematch tree in @tree by going | |
462 | * through all ematches respecting their logic relations returning | |
463 | * as soon as the result is obvious. | |
464 | * | |
465 | * Returns 1 if the ematch tree as-one matches, no ematches are configured | |
466 | * or ematch is not enabled in the kernel, otherwise 0 is returned. | |
467 | */ | |
468 | static inline int tcf_em_tree_match(struct sk_buff *skb, | |
469 | struct tcf_ematch_tree *tree, | |
470 | struct tcf_pkt_info *info) | |
471 | { | |
472 | if (tree->hdr.nmatches) | |
473 | return __tcf_em_tree_match(skb, tree, info); | |
474 | else | |
475 | return 1; | |
476 | } | |
477 | ||
db3d99c0 PM |
478 | #define MODULE_ALIAS_TCF_EMATCH(kind) MODULE_ALIAS("ematch-kind-" __stringify(kind)) |
479 | ||
1da177e4 LT |
480 | #else /* CONFIG_NET_EMATCH */ |
481 | ||
fd2c3ef7 | 482 | struct tcf_ematch_tree { |
1da177e4 LT |
483 | }; |
484 | ||
485 | #define tcf_em_tree_validate(tp, tb, t) ((void)(t), 0) | |
82a470f1 | 486 | #define tcf_em_tree_destroy(t) do { (void)(t); } while(0) |
1da177e4 | 487 | #define tcf_em_tree_dump(skb, t, tlv) (0) |
1da177e4 LT |
488 | #define tcf_em_tree_match(skb, t, info) ((void)(info), 1) |
489 | ||
490 | #endif /* CONFIG_NET_EMATCH */ | |
491 | ||
492 | static inline unsigned char * tcf_get_base_ptr(struct sk_buff *skb, int layer) | |
493 | { | |
494 | switch (layer) { | |
495 | case TCF_LAYER_LINK: | |
d3303a65 | 496 | return skb_mac_header(skb); |
1da177e4 | 497 | case TCF_LAYER_NETWORK: |
d56f90a7 | 498 | return skb_network_header(skb); |
1da177e4 | 499 | case TCF_LAYER_TRANSPORT: |
9c70220b | 500 | return skb_transport_header(skb); |
1da177e4 LT |
501 | } |
502 | ||
503 | return NULL; | |
504 | } | |
505 | ||
eddc9ec5 ACM |
506 | static inline int tcf_valid_offset(const struct sk_buff *skb, |
507 | const unsigned char *ptr, const int len) | |
1da177e4 | 508 | { |
da521b2c DM |
509 | return likely((ptr + len) <= skb_tail_pointer(skb) && |
510 | ptr >= skb->head && | |
511 | (ptr <= (ptr + len))); | |
1da177e4 LT |
512 | } |
513 | ||
1da177e4 | 514 | static inline int |
1057c55f AA |
515 | tcf_change_indev(struct net *net, struct nlattr *indev_tlv, |
516 | struct netlink_ext_ack *extack) | |
1da177e4 | 517 | { |
2519a602 WC |
518 | char indev[IFNAMSIZ]; |
519 | struct net_device *dev; | |
520 | ||
1057c55f AA |
521 | if (nla_strlcpy(indev, indev_tlv, IFNAMSIZ) >= IFNAMSIZ) { |
522 | NL_SET_ERR_MSG(extack, "Interface name too long"); | |
1da177e4 | 523 | return -EINVAL; |
1057c55f | 524 | } |
2519a602 WC |
525 | dev = __dev_get_by_name(net, indev); |
526 | if (!dev) | |
527 | return -ENODEV; | |
528 | return dev->ifindex; | |
1da177e4 LT |
529 | } |
530 | ||
2519a602 WC |
531 | static inline bool |
532 | tcf_match_indev(struct sk_buff *skb, int ifindex) | |
1da177e4 | 533 | { |
2519a602 WC |
534 | if (!ifindex) |
535 | return true; | |
536 | if (!skb->skb_iif) | |
537 | return false; | |
538 | return ifindex == skb->skb_iif; | |
1da177e4 | 539 | } |
1da177e4 | 540 | |
3a7b6861 PNA |
541 | int tc_setup_flow_action(struct flow_action *flow_action, |
542 | const struct tcf_exts *exts); | |
aeb3fecd CW |
543 | int tc_setup_cb_call(struct tcf_block *block, enum tc_setup_type type, |
544 | void *type_data, bool err_stop); | |
e3ab786b | 545 | unsigned int tcf_exts_num_actions(struct tcf_exts *exts); |
717503b9 | 546 | |
a1b7c5fd JF |
547 | struct tc_cls_u32_knode { |
548 | struct tcf_exts *exts; | |
068ceb35 | 549 | struct tcf_result *res; |
e014860e | 550 | struct tc_u32_sel *sel; |
a1b7c5fd JF |
551 | u32 handle; |
552 | u32 val; | |
553 | u32 mask; | |
554 | u32 link_handle; | |
e014860e | 555 | u8 fshift; |
a1b7c5fd JF |
556 | }; |
557 | ||
558 | struct tc_cls_u32_hnode { | |
559 | u32 handle; | |
560 | u32 prio; | |
561 | unsigned int divisor; | |
562 | }; | |
563 | ||
564 | enum tc_clsu32_command { | |
565 | TC_CLSU32_NEW_KNODE, | |
566 | TC_CLSU32_REPLACE_KNODE, | |
567 | TC_CLSU32_DELETE_KNODE, | |
568 | TC_CLSU32_NEW_HNODE, | |
569 | TC_CLSU32_REPLACE_HNODE, | |
570 | TC_CLSU32_DELETE_HNODE, | |
571 | }; | |
572 | ||
573 | struct tc_cls_u32_offload { | |
f9e30088 | 574 | struct flow_cls_common_offload common; |
a1b7c5fd JF |
575 | /* knode values */ |
576 | enum tc_clsu32_command command; | |
577 | union { | |
578 | struct tc_cls_u32_knode knode; | |
579 | struct tc_cls_u32_hnode hnode; | |
580 | }; | |
581 | }; | |
582 | ||
7b06e8ae | 583 | static inline bool tc_can_offload(const struct net_device *dev) |
6843e7a2 | 584 | { |
70b5aee4 | 585 | return dev->features & NETIF_F_HW_TC; |
6843e7a2 JF |
586 | } |
587 | ||
f9eda14f QM |
588 | static inline bool tc_can_offload_extack(const struct net_device *dev, |
589 | struct netlink_ext_ack *extack) | |
590 | { | |
591 | bool can = tc_can_offload(dev); | |
592 | ||
593 | if (!can) | |
594 | NL_SET_ERR_MSG(extack, "TC offload is disabled on net device"); | |
595 | ||
596 | return can; | |
597 | } | |
598 | ||
878db9f0 JK |
599 | static inline bool |
600 | tc_cls_can_offload_and_chain0(const struct net_device *dev, | |
f9e30088 | 601 | struct flow_cls_common_offload *common) |
878db9f0 JK |
602 | { |
603 | if (!tc_can_offload_extack(dev, common->extack)) | |
604 | return false; | |
605 | if (common->chain_index) { | |
606 | NL_SET_ERR_MSG(common->extack, | |
607 | "Driver supports only offload of chain 0"); | |
608 | return false; | |
609 | } | |
610 | return true; | |
611 | } | |
612 | ||
55330f05 HHZ |
613 | static inline bool tc_skip_hw(u32 flags) |
614 | { | |
615 | return (flags & TCA_CLS_FLAGS_SKIP_HW) ? true : false; | |
616 | } | |
617 | ||
d34e3e18 SS |
618 | static inline bool tc_skip_sw(u32 flags) |
619 | { | |
620 | return (flags & TCA_CLS_FLAGS_SKIP_SW) ? true : false; | |
621 | } | |
622 | ||
623 | /* SKIP_HW and SKIP_SW are mutually exclusive flags. */ | |
624 | static inline bool tc_flags_valid(u32 flags) | |
625 | { | |
81c7288b MRL |
626 | if (flags & ~(TCA_CLS_FLAGS_SKIP_HW | TCA_CLS_FLAGS_SKIP_SW | |
627 | TCA_CLS_FLAGS_VERBOSE)) | |
d34e3e18 SS |
628 | return false; |
629 | ||
81c7288b | 630 | flags &= TCA_CLS_FLAGS_SKIP_HW | TCA_CLS_FLAGS_SKIP_SW; |
d34e3e18 SS |
631 | if (!(flags ^ (TCA_CLS_FLAGS_SKIP_HW | TCA_CLS_FLAGS_SKIP_SW))) |
632 | return false; | |
633 | ||
634 | return true; | |
635 | } | |
636 | ||
e696028a OG |
637 | static inline bool tc_in_hw(u32 flags) |
638 | { | |
639 | return (flags & TCA_CLS_FLAGS_IN_HW) ? true : false; | |
640 | } | |
641 | ||
34832e1c | 642 | static inline void |
f9e30088 | 643 | tc_cls_common_offload_init(struct flow_cls_common_offload *cls_common, |
34832e1c JK |
644 | const struct tcf_proto *tp, u32 flags, |
645 | struct netlink_ext_ack *extack) | |
646 | { | |
647 | cls_common->chain_index = tp->chain->index; | |
648 | cls_common->protocol = tp->protocol; | |
ef01adae | 649 | cls_common->prio = tp->prio >> 16; |
81c7288b | 650 | if (tc_skip_sw(flags) || flags & TCA_CLS_FLAGS_VERBOSE) |
34832e1c JK |
651 | cls_common->extack = extack; |
652 | } | |
653 | ||
b87f7936 YG |
654 | enum tc_matchall_command { |
655 | TC_CLSMATCHALL_REPLACE, | |
656 | TC_CLSMATCHALL_DESTROY, | |
b7fe4ab8 | 657 | TC_CLSMATCHALL_STATS, |
b87f7936 YG |
658 | }; |
659 | ||
660 | struct tc_cls_matchall_offload { | |
f9e30088 | 661 | struct flow_cls_common_offload common; |
b87f7936 | 662 | enum tc_matchall_command command; |
f00cbf19 | 663 | struct flow_rule *rule; |
b7fe4ab8 | 664 | struct flow_stats stats; |
b87f7936 YG |
665 | unsigned long cookie; |
666 | }; | |
667 | ||
332ae8e2 | 668 | enum tc_clsbpf_command { |
102740bd | 669 | TC_CLSBPF_OFFLOAD, |
68d64063 | 670 | TC_CLSBPF_STATS, |
332ae8e2 JK |
671 | }; |
672 | ||
673 | struct tc_cls_bpf_offload { | |
f9e30088 | 674 | struct flow_cls_common_offload common; |
332ae8e2 JK |
675 | enum tc_clsbpf_command command; |
676 | struct tcf_exts *exts; | |
677 | struct bpf_prog *prog; | |
102740bd | 678 | struct bpf_prog *oldprog; |
332ae8e2 JK |
679 | const char *name; |
680 | bool exts_integrated; | |
681 | }; | |
682 | ||
4e8b86c0 AN |
683 | struct tc_mqprio_qopt_offload { |
684 | /* struct tc_mqprio_qopt must always be the first element */ | |
685 | struct tc_mqprio_qopt qopt; | |
686 | u16 mode; | |
687 | u16 shaper; | |
688 | u32 flags; | |
689 | u64 min_rate[TC_QOPT_MAX_QUEUE]; | |
690 | u64 max_rate[TC_QOPT_MAX_QUEUE]; | |
691 | }; | |
1045ba77 JHS |
692 | |
693 | /* This structure holds cookie structure that is passed from user | |
694 | * to the kernel for actions and classifiers | |
695 | */ | |
696 | struct tc_cookie { | |
697 | u8 *data; | |
698 | u32 len; | |
eec94fdb | 699 | struct rcu_head rcu; |
1045ba77 | 700 | }; |
602f3baf | 701 | |
f34b4aac NF |
702 | struct tc_qopt_offload_stats { |
703 | struct gnet_stats_basic_packed *bstats; | |
704 | struct gnet_stats_queue *qstats; | |
705 | }; | |
706 | ||
f971b132 JK |
707 | enum tc_mq_command { |
708 | TC_MQ_CREATE, | |
709 | TC_MQ_DESTROY, | |
47c669a4 | 710 | TC_MQ_STATS, |
d577a3d2 JK |
711 | TC_MQ_GRAFT, |
712 | }; | |
713 | ||
714 | struct tc_mq_opt_offload_graft_params { | |
715 | unsigned long queue; | |
716 | u32 child_handle; | |
f971b132 JK |
717 | }; |
718 | ||
719 | struct tc_mq_qopt_offload { | |
720 | enum tc_mq_command command; | |
721 | u32 handle; | |
d577a3d2 JK |
722 | union { |
723 | struct tc_qopt_offload_stats stats; | |
724 | struct tc_mq_opt_offload_graft_params graft_params; | |
725 | }; | |
f971b132 JK |
726 | }; |
727 | ||
602f3baf NF |
728 | enum tc_red_command { |
729 | TC_RED_REPLACE, | |
730 | TC_RED_DESTROY, | |
731 | TC_RED_STATS, | |
732 | TC_RED_XSTATS, | |
bf2a752b | 733 | TC_RED_GRAFT, |
602f3baf NF |
734 | }; |
735 | ||
736 | struct tc_red_qopt_offload_params { | |
737 | u32 min; | |
738 | u32 max; | |
739 | u32 probability; | |
c0b7490b | 740 | u32 limit; |
602f3baf | 741 | bool is_ecn; |
190852a5 | 742 | bool is_harddrop; |
416ef9b1 | 743 | struct gnet_stats_queue *qstats; |
602f3baf | 744 | }; |
602f3baf NF |
745 | |
746 | struct tc_red_qopt_offload { | |
747 | enum tc_red_command command; | |
748 | u32 handle; | |
749 | u32 parent; | |
750 | union { | |
751 | struct tc_red_qopt_offload_params set; | |
f34b4aac | 752 | struct tc_qopt_offload_stats stats; |
602f3baf | 753 | struct red_stats *xstats; |
bf2a752b | 754 | u32 child_handle; |
602f3baf NF |
755 | }; |
756 | }; | |
757 | ||
890d8d23 JK |
758 | enum tc_gred_command { |
759 | TC_GRED_REPLACE, | |
760 | TC_GRED_DESTROY, | |
e49efd52 | 761 | TC_GRED_STATS, |
890d8d23 JK |
762 | }; |
763 | ||
764 | struct tc_gred_vq_qopt_offload_params { | |
765 | bool present; | |
766 | u32 limit; | |
767 | u32 prio; | |
768 | u32 min; | |
769 | u32 max; | |
770 | bool is_ecn; | |
771 | bool is_harddrop; | |
772 | u32 probability; | |
773 | /* Only need backlog, see struct tc_prio_qopt_offload_params */ | |
774 | u32 *backlog; | |
775 | }; | |
776 | ||
777 | struct tc_gred_qopt_offload_params { | |
778 | bool grio_on; | |
779 | bool wred_on; | |
780 | unsigned int dp_cnt; | |
781 | unsigned int dp_def; | |
782 | struct gnet_stats_queue *qstats; | |
783 | struct tc_gred_vq_qopt_offload_params tab[MAX_DPs]; | |
784 | }; | |
785 | ||
e49efd52 JK |
786 | struct tc_gred_qopt_offload_stats { |
787 | struct gnet_stats_basic_packed bstats[MAX_DPs]; | |
788 | struct gnet_stats_queue qstats[MAX_DPs]; | |
789 | struct red_stats *xstats[MAX_DPs]; | |
790 | }; | |
791 | ||
890d8d23 JK |
792 | struct tc_gred_qopt_offload { |
793 | enum tc_gred_command command; | |
794 | u32 handle; | |
795 | u32 parent; | |
796 | union { | |
797 | struct tc_gred_qopt_offload_params set; | |
e49efd52 | 798 | struct tc_gred_qopt_offload_stats stats; |
890d8d23 JK |
799 | }; |
800 | }; | |
801 | ||
7fdb61b4 NF |
802 | enum tc_prio_command { |
803 | TC_PRIO_REPLACE, | |
804 | TC_PRIO_DESTROY, | |
805 | TC_PRIO_STATS, | |
b9c7a7ac | 806 | TC_PRIO_GRAFT, |
7fdb61b4 NF |
807 | }; |
808 | ||
809 | struct tc_prio_qopt_offload_params { | |
810 | int bands; | |
811 | u8 priomap[TC_PRIO_MAX + 1]; | |
812 | /* In case that a prio qdisc is offloaded and now is changed to a | |
813 | * non-offloadedable config, it needs to update the backlog & qlen | |
814 | * values to negate the HW backlog & qlen values (and only them). | |
815 | */ | |
816 | struct gnet_stats_queue *qstats; | |
817 | }; | |
818 | ||
b9c7a7ac NF |
819 | struct tc_prio_qopt_offload_graft_params { |
820 | u8 band; | |
821 | u32 child_handle; | |
822 | }; | |
823 | ||
7fdb61b4 NF |
824 | struct tc_prio_qopt_offload { |
825 | enum tc_prio_command command; | |
826 | u32 handle; | |
827 | u32 parent; | |
828 | union { | |
829 | struct tc_prio_qopt_offload_params replace_params; | |
830 | struct tc_qopt_offload_stats stats; | |
b9c7a7ac | 831 | struct tc_prio_qopt_offload_graft_params graft_params; |
7fdb61b4 NF |
832 | }; |
833 | }; | |
b9c7a7ac | 834 | |
98b0e5f6 JK |
835 | enum tc_root_command { |
836 | TC_ROOT_GRAFT, | |
837 | }; | |
838 | ||
839 | struct tc_root_qopt_offload { | |
840 | enum tc_root_command command; | |
841 | u32 handle; | |
842 | bool ingress; | |
843 | }; | |
844 | ||
1da177e4 | 845 | #endif |