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b2441318 | 1 | /* SPDX-License-Identifier: GPL-2.0 */ |
1da177e4 LT |
2 | #ifndef __NET_PKT_CLS_H |
3 | #define __NET_PKT_CLS_H | |
4 | ||
5 | #include <linux/pkt_cls.h> | |
7aa0045d | 6 | #include <linux/workqueue.h> |
1da177e4 LT |
7 | #include <net/sch_generic.h> |
8 | #include <net/act_api.h> | |
8f256622 | 9 | #include <net/flow_offload.h> |
a5148626 | 10 | #include <net/net_namespace.h> |
1da177e4 | 11 | |
cd11b164 | 12 | /* TC action not accessible from user space */ |
720f22fe | 13 | #define TC_ACT_CONSUMED (TC_ACT_VALUE_MAX + 1) |
cd11b164 | 14 | |
1da177e4 LT |
15 | /* Basic packet classifier frontend definitions. */ |
16 | ||
fd2c3ef7 | 17 | struct tcf_walker { |
1da177e4 LT |
18 | int stop; |
19 | int skip; | |
20 | int count; | |
6676d5e4 | 21 | bool nonempty; |
01683a14 | 22 | unsigned long cookie; |
8113c095 | 23 | int (*fn)(struct tcf_proto *, void *node, struct tcf_walker *); |
1da177e4 LT |
24 | }; |
25 | ||
5c15257f JP |
26 | int register_tcf_proto_ops(struct tcf_proto_ops *ops); |
27 | int unregister_tcf_proto_ops(struct tcf_proto_ops *ops); | |
1da177e4 | 28 | |
8c4083b3 | 29 | struct tcf_block_ext_info { |
32f8c409 | 30 | enum flow_block_binder_type binder_type; |
c7eb7d72 JP |
31 | tcf_chain_head_change_t *chain_head_change; |
32 | void *chain_head_change_priv; | |
48617387 | 33 | u32 block_index; |
8c4083b3 JP |
34 | }; |
35 | ||
acb67442 | 36 | struct tcf_block_cb; |
aaa908ff | 37 | bool tcf_queue_work(struct rcu_work *rwork, work_func_t func); |
acb67442 | 38 | |
8ae70032 | 39 | #ifdef CONFIG_NET_CLS |
1f3ed383 JP |
40 | struct tcf_chain *tcf_chain_get_by_act(struct tcf_block *block, |
41 | u32 chain_index); | |
1f3ed383 | 42 | void tcf_chain_put_by_act(struct tcf_chain *chain); |
bbf73830 VB |
43 | struct tcf_chain *tcf_get_next_chain(struct tcf_block *block, |
44 | struct tcf_chain *chain); | |
fe2923af | 45 | struct tcf_proto *tcf_get_next_proto(struct tcf_chain *chain, |
12db03b6 | 46 | struct tcf_proto *tp, bool rtnl_held); |
f36fe1c4 | 47 | void tcf_block_netif_keep_dst(struct tcf_block *block); |
6529eaba | 48 | int tcf_block_get(struct tcf_block **p_block, |
8d1a77f9 AA |
49 | struct tcf_proto __rcu **p_filter_chain, struct Qdisc *q, |
50 | struct netlink_ext_ack *extack); | |
c7eb7d72 | 51 | int tcf_block_get_ext(struct tcf_block **p_block, struct Qdisc *q, |
8d1a77f9 AA |
52 | struct tcf_block_ext_info *ei, |
53 | struct netlink_ext_ack *extack); | |
6529eaba | 54 | void tcf_block_put(struct tcf_block *block); |
c7eb7d72 | 55 | void tcf_block_put_ext(struct tcf_block *block, struct Qdisc *q, |
8c4083b3 | 56 | struct tcf_block_ext_info *ei); |
44186460 | 57 | |
48617387 JP |
58 | static inline bool tcf_block_shared(struct tcf_block *block) |
59 | { | |
60 | return block->index; | |
61 | } | |
62 | ||
44186460 JP |
63 | static inline struct Qdisc *tcf_block_q(struct tcf_block *block) |
64 | { | |
48617387 | 65 | WARN_ON(tcf_block_shared(block)); |
44186460 JP |
66 | return block->q; |
67 | } | |
68 | ||
7f76fa36 JH |
69 | int __tc_indr_block_cb_register(struct net_device *dev, void *cb_priv, |
70 | tc_indr_block_bind_cb_t *cb, void *cb_ident); | |
71 | int tc_indr_block_cb_register(struct net_device *dev, void *cb_priv, | |
72 | tc_indr_block_bind_cb_t *cb, void *cb_ident); | |
73 | void __tc_indr_block_cb_unregister(struct net_device *dev, | |
74 | tc_indr_block_bind_cb_t *cb, void *cb_ident); | |
75 | void tc_indr_block_cb_unregister(struct net_device *dev, | |
76 | tc_indr_block_bind_cb_t *cb, void *cb_ident); | |
acb67442 | 77 | |
87d83093 JP |
78 | int tcf_classify(struct sk_buff *skb, const struct tcf_proto *tp, |
79 | struct tcf_result *res, bool compat_mode); | |
80 | ||
8ae70032 | 81 | #else |
88c44a52 PJV |
82 | static inline bool tcf_block_shared(struct tcf_block *block) |
83 | { | |
84 | return false; | |
85 | } | |
86 | ||
6529eaba JP |
87 | static inline |
88 | int tcf_block_get(struct tcf_block **p_block, | |
3c149091 SM |
89 | struct tcf_proto __rcu **p_filter_chain, struct Qdisc *q, |
90 | struct netlink_ext_ack *extack) | |
6529eaba JP |
91 | { |
92 | return 0; | |
93 | } | |
94 | ||
8c4083b3 | 95 | static inline |
c7eb7d72 | 96 | int tcf_block_get_ext(struct tcf_block **p_block, struct Qdisc *q, |
33c30a8b QM |
97 | struct tcf_block_ext_info *ei, |
98 | struct netlink_ext_ack *extack) | |
8c4083b3 JP |
99 | { |
100 | return 0; | |
101 | } | |
102 | ||
6529eaba | 103 | static inline void tcf_block_put(struct tcf_block *block) |
8ae70032 JP |
104 | { |
105 | } | |
87d83093 | 106 | |
8c4083b3 | 107 | static inline |
c7eb7d72 | 108 | void tcf_block_put_ext(struct tcf_block *block, struct Qdisc *q, |
8c4083b3 JP |
109 | struct tcf_block_ext_info *ei) |
110 | { | |
111 | } | |
112 | ||
44186460 JP |
113 | static inline struct Qdisc *tcf_block_q(struct tcf_block *block) |
114 | { | |
115 | return NULL; | |
116 | } | |
117 | ||
acb67442 JP |
118 | static inline |
119 | int tc_setup_cb_block_register(struct tcf_block *block, tc_setup_cb_t *cb, | |
120 | void *cb_priv) | |
121 | { | |
122 | return 0; | |
123 | } | |
124 | ||
125 | static inline | |
126 | void tc_setup_cb_block_unregister(struct tcf_block *block, tc_setup_cb_t *cb, | |
127 | void *cb_priv) | |
128 | { | |
129 | } | |
130 | ||
7f76fa36 JH |
131 | static inline |
132 | int __tc_indr_block_cb_register(struct net_device *dev, void *cb_priv, | |
133 | tc_indr_block_bind_cb_t *cb, void *cb_ident) | |
134 | { | |
135 | return 0; | |
136 | } | |
137 | ||
138 | static inline | |
139 | int tc_indr_block_cb_register(struct net_device *dev, void *cb_priv, | |
140 | tc_indr_block_bind_cb_t *cb, void *cb_ident) | |
141 | { | |
142 | return 0; | |
143 | } | |
144 | ||
145 | static inline | |
146 | void __tc_indr_block_cb_unregister(struct net_device *dev, | |
147 | tc_indr_block_bind_cb_t *cb, void *cb_ident) | |
148 | { | |
149 | } | |
150 | ||
151 | static inline | |
152 | void tc_indr_block_cb_unregister(struct net_device *dev, | |
153 | tc_indr_block_bind_cb_t *cb, void *cb_ident) | |
154 | { | |
155 | } | |
156 | ||
87d83093 JP |
157 | static inline int tcf_classify(struct sk_buff *skb, const struct tcf_proto *tp, |
158 | struct tcf_result *res, bool compat_mode) | |
159 | { | |
160 | return TC_ACT_UNSPEC; | |
161 | } | |
8ae70032 | 162 | #endif |
cf1facda | 163 | |
1da177e4 LT |
164 | static inline unsigned long |
165 | __cls_set_class(unsigned long *clp, unsigned long cl) | |
166 | { | |
a0efb80c | 167 | return xchg(clp, cl); |
1da177e4 LT |
168 | } |
169 | ||
170 | static inline unsigned long | |
34e3759c | 171 | cls_set_class(struct Qdisc *q, unsigned long *clp, unsigned long cl) |
1da177e4 LT |
172 | { |
173 | unsigned long old_cl; | |
34e3759c JP |
174 | |
175 | sch_tree_lock(q); | |
1da177e4 | 176 | old_cl = __cls_set_class(clp, cl); |
34e3759c | 177 | sch_tree_unlock(q); |
1da177e4 LT |
178 | return old_cl; |
179 | } | |
180 | ||
181 | static inline void | |
182 | tcf_bind_filter(struct tcf_proto *tp, struct tcf_result *r, unsigned long base) | |
183 | { | |
34e3759c | 184 | struct Qdisc *q = tp->chain->block->q; |
1da177e4 LT |
185 | unsigned long cl; |
186 | ||
34e3759c JP |
187 | /* Check q as it is not set for shared blocks. In that case, |
188 | * setting class is not supported. | |
189 | */ | |
190 | if (!q) | |
191 | return; | |
192 | cl = q->ops->cl_ops->bind_tcf(q, base, r->classid); | |
193 | cl = cls_set_class(q, &r->class, cl); | |
1da177e4 | 194 | if (cl) |
34e3759c | 195 | q->ops->cl_ops->unbind_tcf(q, cl); |
1da177e4 LT |
196 | } |
197 | ||
198 | static inline void | |
199 | tcf_unbind_filter(struct tcf_proto *tp, struct tcf_result *r) | |
200 | { | |
34e3759c | 201 | struct Qdisc *q = tp->chain->block->q; |
1da177e4 LT |
202 | unsigned long cl; |
203 | ||
34e3759c JP |
204 | if (!q) |
205 | return; | |
1da177e4 | 206 | if ((cl = __cls_set_class(&r->class, 0)) != 0) |
34e3759c | 207 | q->ops->cl_ops->unbind_tcf(q, cl); |
1da177e4 LT |
208 | } |
209 | ||
fd2c3ef7 | 210 | struct tcf_exts { |
1da177e4 | 211 | #ifdef CONFIG_NET_CLS_ACT |
33be6271 | 212 | __u32 type; /* for backward compat(TCA_OLD_COMPAT) */ |
22dc13c8 WC |
213 | int nr_actions; |
214 | struct tc_action **actions; | |
e4b95c41 | 215 | struct net *net; |
1da177e4 | 216 | #endif |
5da57f42 WC |
217 | /* Map to export classifier specific extension TLV types to the |
218 | * generic extensions API. Unsupported extensions must be set to 0. | |
219 | */ | |
1da177e4 LT |
220 | int action; |
221 | int police; | |
222 | }; | |
223 | ||
14215108 CW |
224 | static inline int tcf_exts_init(struct tcf_exts *exts, struct net *net, |
225 | int action, int police) | |
33be6271 WC |
226 | { |
227 | #ifdef CONFIG_NET_CLS_ACT | |
5da57f42 | 228 | exts->type = 0; |
22dc13c8 | 229 | exts->nr_actions = 0; |
14215108 | 230 | exts->net = net; |
22dc13c8 WC |
231 | exts->actions = kcalloc(TCA_ACT_MAX_PRIO, sizeof(struct tc_action *), |
232 | GFP_KERNEL); | |
b9a24bb7 WC |
233 | if (!exts->actions) |
234 | return -ENOMEM; | |
33be6271 | 235 | #endif |
5da57f42 WC |
236 | exts->action = action; |
237 | exts->police = police; | |
b9a24bb7 | 238 | return 0; |
33be6271 WC |
239 | } |
240 | ||
e4b95c41 CW |
241 | /* Return false if the netns is being destroyed in cleanup_net(). Callers |
242 | * need to do cleanup synchronously in this case, otherwise may race with | |
243 | * tc_action_net_exit(). Return true for other cases. | |
244 | */ | |
245 | static inline bool tcf_exts_get_net(struct tcf_exts *exts) | |
246 | { | |
247 | #ifdef CONFIG_NET_CLS_ACT | |
248 | exts->net = maybe_get_net(exts->net); | |
249 | return exts->net != NULL; | |
250 | #else | |
251 | return true; | |
252 | #endif | |
253 | } | |
254 | ||
255 | static inline void tcf_exts_put_net(struct tcf_exts *exts) | |
256 | { | |
257 | #ifdef CONFIG_NET_CLS_ACT | |
258 | if (exts->net) | |
259 | put_net(exts->net); | |
260 | #endif | |
261 | } | |
262 | ||
22dc13c8 | 263 | #ifdef CONFIG_NET_CLS_ACT |
244cd96a CW |
264 | #define tcf_exts_for_each_action(i, a, exts) \ |
265 | for (i = 0; i < TCA_ACT_MAX_PRIO && ((a) = (exts)->actions[i]); i++) | |
266 | #else | |
267 | #define tcf_exts_for_each_action(i, a, exts) \ | |
191672ca | 268 | for (; 0; (void)(i), (void)(a), (void)(exts)) |
22dc13c8 | 269 | #endif |
22dc13c8 | 270 | |
d897a638 JK |
271 | static inline void |
272 | tcf_exts_stats_update(const struct tcf_exts *exts, | |
273 | u64 bytes, u64 packets, u64 lastuse) | |
274 | { | |
275 | #ifdef CONFIG_NET_CLS_ACT | |
276 | int i; | |
277 | ||
278 | preempt_disable(); | |
279 | ||
280 | for (i = 0; i < exts->nr_actions; i++) { | |
281 | struct tc_action *a = exts->actions[i]; | |
282 | ||
28169aba | 283 | tcf_action_stats_update(a, bytes, packets, lastuse, true); |
d897a638 JK |
284 | } |
285 | ||
286 | preempt_enable(); | |
287 | #endif | |
288 | } | |
289 | ||
3bcc0cec JP |
290 | /** |
291 | * tcf_exts_has_actions - check if at least one action is present | |
292 | * @exts: tc filter extensions handle | |
293 | * | |
294 | * Returns true if at least one action is present. | |
295 | */ | |
296 | static inline bool tcf_exts_has_actions(struct tcf_exts *exts) | |
297 | { | |
2734437e | 298 | #ifdef CONFIG_NET_CLS_ACT |
3bcc0cec JP |
299 | return exts->nr_actions; |
300 | #else | |
301 | return false; | |
302 | #endif | |
303 | } | |
2734437e | 304 | |
af69afc5 JP |
305 | /** |
306 | * tcf_exts_exec - execute tc filter extensions | |
307 | * @skb: socket buffer | |
308 | * @exts: tc filter extensions handle | |
309 | * @res: desired result | |
310 | * | |
af089e70 | 311 | * Executes all configured extensions. Returns TC_ACT_OK on a normal execution, |
af69afc5 JP |
312 | * a negative number if the filter must be considered unmatched or |
313 | * a positive action code (TC_ACT_*) which must be returned to the | |
314 | * underlying layer. | |
315 | */ | |
316 | static inline int | |
317 | tcf_exts_exec(struct sk_buff *skb, struct tcf_exts *exts, | |
318 | struct tcf_result *res) | |
319 | { | |
320 | #ifdef CONFIG_NET_CLS_ACT | |
ec1a9cca | 321 | return tcf_action_exec(skb, exts->actions, exts->nr_actions, res); |
af69afc5 | 322 | #endif |
af089e70 | 323 | return TC_ACT_OK; |
af69afc5 JP |
324 | } |
325 | ||
5c15257f JP |
326 | int tcf_exts_validate(struct net *net, struct tcf_proto *tp, |
327 | struct nlattr **tb, struct nlattr *rate_tlv, | |
ec6743a1 | 328 | struct tcf_exts *exts, bool ovr, bool rtnl_held, |
50a56190 | 329 | struct netlink_ext_ack *extack); |
18d0264f | 330 | void tcf_exts_destroy(struct tcf_exts *exts); |
9b0d4446 | 331 | void tcf_exts_change(struct tcf_exts *dst, struct tcf_exts *src); |
5da57f42 WC |
332 | int tcf_exts_dump(struct sk_buff *skb, struct tcf_exts *exts); |
333 | int tcf_exts_dump_stats(struct sk_buff *skb, struct tcf_exts *exts); | |
1da177e4 LT |
334 | |
335 | /** | |
336 | * struct tcf_pkt_info - packet information | |
337 | */ | |
fd2c3ef7 | 338 | struct tcf_pkt_info { |
1da177e4 LT |
339 | unsigned char * ptr; |
340 | int nexthdr; | |
341 | }; | |
342 | ||
343 | #ifdef CONFIG_NET_EMATCH | |
344 | ||
345 | struct tcf_ematch_ops; | |
346 | ||
347 | /** | |
348 | * struct tcf_ematch - extended match (ematch) | |
349 | * | |
350 | * @matchid: identifier to allow userspace to reidentify a match | |
351 | * @flags: flags specifying attributes and the relation to other matches | |
352 | * @ops: the operations lookup table of the corresponding ematch module | |
353 | * @datalen: length of the ematch specific configuration data | |
354 | * @data: ematch specific data | |
355 | */ | |
fd2c3ef7 | 356 | struct tcf_ematch { |
1da177e4 LT |
357 | struct tcf_ematch_ops * ops; |
358 | unsigned long data; | |
359 | unsigned int datalen; | |
360 | u16 matchid; | |
361 | u16 flags; | |
82a470f1 | 362 | struct net *net; |
1da177e4 LT |
363 | }; |
364 | ||
365 | static inline int tcf_em_is_container(struct tcf_ematch *em) | |
366 | { | |
367 | return !em->ops; | |
368 | } | |
369 | ||
370 | static inline int tcf_em_is_simple(struct tcf_ematch *em) | |
371 | { | |
372 | return em->flags & TCF_EM_SIMPLE; | |
373 | } | |
374 | ||
375 | static inline int tcf_em_is_inverted(struct tcf_ematch *em) | |
376 | { | |
377 | return em->flags & TCF_EM_INVERT; | |
378 | } | |
379 | ||
380 | static inline int tcf_em_last_match(struct tcf_ematch *em) | |
381 | { | |
382 | return (em->flags & TCF_EM_REL_MASK) == TCF_EM_REL_END; | |
383 | } | |
384 | ||
385 | static inline int tcf_em_early_end(struct tcf_ematch *em, int result) | |
386 | { | |
387 | if (tcf_em_last_match(em)) | |
388 | return 1; | |
389 | ||
390 | if (result == 0 && em->flags & TCF_EM_REL_AND) | |
391 | return 1; | |
392 | ||
393 | if (result != 0 && em->flags & TCF_EM_REL_OR) | |
394 | return 1; | |
395 | ||
396 | return 0; | |
397 | } | |
398 | ||
399 | /** | |
400 | * struct tcf_ematch_tree - ematch tree handle | |
401 | * | |
402 | * @hdr: ematch tree header supplied by userspace | |
403 | * @matches: array of ematches | |
404 | */ | |
fd2c3ef7 | 405 | struct tcf_ematch_tree { |
1da177e4 LT |
406 | struct tcf_ematch_tree_hdr hdr; |
407 | struct tcf_ematch * matches; | |
408 | ||
409 | }; | |
410 | ||
411 | /** | |
412 | * struct tcf_ematch_ops - ematch module operations | |
413 | * | |
414 | * @kind: identifier (kind) of this ematch module | |
415 | * @datalen: length of expected configuration data (optional) | |
416 | * @change: called during validation (optional) | |
417 | * @match: called during ematch tree evaluation, must return 1/0 | |
418 | * @destroy: called during destroyage (optional) | |
419 | * @dump: called during dumping process (optional) | |
420 | * @owner: owner, must be set to THIS_MODULE | |
421 | * @link: link to previous/next ematch module (internal use) | |
422 | */ | |
fd2c3ef7 | 423 | struct tcf_ematch_ops { |
1da177e4 LT |
424 | int kind; |
425 | int datalen; | |
82a470f1 | 426 | int (*change)(struct net *net, void *, |
1da177e4 LT |
427 | int, struct tcf_ematch *); |
428 | int (*match)(struct sk_buff *, struct tcf_ematch *, | |
429 | struct tcf_pkt_info *); | |
82a470f1 | 430 | void (*destroy)(struct tcf_ematch *); |
1da177e4 LT |
431 | int (*dump)(struct sk_buff *, struct tcf_ematch *); |
432 | struct module *owner; | |
433 | struct list_head link; | |
434 | }; | |
435 | ||
5c15257f JP |
436 | int tcf_em_register(struct tcf_ematch_ops *); |
437 | void tcf_em_unregister(struct tcf_ematch_ops *); | |
438 | int tcf_em_tree_validate(struct tcf_proto *, struct nlattr *, | |
439 | struct tcf_ematch_tree *); | |
82a470f1 | 440 | void tcf_em_tree_destroy(struct tcf_ematch_tree *); |
5c15257f JP |
441 | int tcf_em_tree_dump(struct sk_buff *, struct tcf_ematch_tree *, int); |
442 | int __tcf_em_tree_match(struct sk_buff *, struct tcf_ematch_tree *, | |
443 | struct tcf_pkt_info *); | |
1da177e4 | 444 | |
1da177e4 LT |
445 | /** |
446 | * tcf_em_tree_match - evaulate an ematch tree | |
447 | * | |
448 | * @skb: socket buffer of the packet in question | |
449 | * @tree: ematch tree to be used for evaluation | |
450 | * @info: packet information examined by classifier | |
451 | * | |
452 | * This function matches @skb against the ematch tree in @tree by going | |
453 | * through all ematches respecting their logic relations returning | |
454 | * as soon as the result is obvious. | |
455 | * | |
456 | * Returns 1 if the ematch tree as-one matches, no ematches are configured | |
457 | * or ematch is not enabled in the kernel, otherwise 0 is returned. | |
458 | */ | |
459 | static inline int tcf_em_tree_match(struct sk_buff *skb, | |
460 | struct tcf_ematch_tree *tree, | |
461 | struct tcf_pkt_info *info) | |
462 | { | |
463 | if (tree->hdr.nmatches) | |
464 | return __tcf_em_tree_match(skb, tree, info); | |
465 | else | |
466 | return 1; | |
467 | } | |
468 | ||
db3d99c0 PM |
469 | #define MODULE_ALIAS_TCF_EMATCH(kind) MODULE_ALIAS("ematch-kind-" __stringify(kind)) |
470 | ||
1da177e4 LT |
471 | #else /* CONFIG_NET_EMATCH */ |
472 | ||
fd2c3ef7 | 473 | struct tcf_ematch_tree { |
1da177e4 LT |
474 | }; |
475 | ||
476 | #define tcf_em_tree_validate(tp, tb, t) ((void)(t), 0) | |
82a470f1 | 477 | #define tcf_em_tree_destroy(t) do { (void)(t); } while(0) |
1da177e4 | 478 | #define tcf_em_tree_dump(skb, t, tlv) (0) |
1da177e4 LT |
479 | #define tcf_em_tree_match(skb, t, info) ((void)(info), 1) |
480 | ||
481 | #endif /* CONFIG_NET_EMATCH */ | |
482 | ||
483 | static inline unsigned char * tcf_get_base_ptr(struct sk_buff *skb, int layer) | |
484 | { | |
485 | switch (layer) { | |
486 | case TCF_LAYER_LINK: | |
d3303a65 | 487 | return skb_mac_header(skb); |
1da177e4 | 488 | case TCF_LAYER_NETWORK: |
d56f90a7 | 489 | return skb_network_header(skb); |
1da177e4 | 490 | case TCF_LAYER_TRANSPORT: |
9c70220b | 491 | return skb_transport_header(skb); |
1da177e4 LT |
492 | } |
493 | ||
494 | return NULL; | |
495 | } | |
496 | ||
eddc9ec5 ACM |
497 | static inline int tcf_valid_offset(const struct sk_buff *skb, |
498 | const unsigned char *ptr, const int len) | |
1da177e4 | 499 | { |
da521b2c DM |
500 | return likely((ptr + len) <= skb_tail_pointer(skb) && |
501 | ptr >= skb->head && | |
502 | (ptr <= (ptr + len))); | |
1da177e4 LT |
503 | } |
504 | ||
1da177e4 | 505 | static inline int |
1057c55f AA |
506 | tcf_change_indev(struct net *net, struct nlattr *indev_tlv, |
507 | struct netlink_ext_ack *extack) | |
1da177e4 | 508 | { |
2519a602 WC |
509 | char indev[IFNAMSIZ]; |
510 | struct net_device *dev; | |
511 | ||
1057c55f AA |
512 | if (nla_strlcpy(indev, indev_tlv, IFNAMSIZ) >= IFNAMSIZ) { |
513 | NL_SET_ERR_MSG(extack, "Interface name too long"); | |
1da177e4 | 514 | return -EINVAL; |
1057c55f | 515 | } |
2519a602 WC |
516 | dev = __dev_get_by_name(net, indev); |
517 | if (!dev) | |
518 | return -ENODEV; | |
519 | return dev->ifindex; | |
1da177e4 LT |
520 | } |
521 | ||
2519a602 WC |
522 | static inline bool |
523 | tcf_match_indev(struct sk_buff *skb, int ifindex) | |
1da177e4 | 524 | { |
2519a602 WC |
525 | if (!ifindex) |
526 | return true; | |
527 | if (!skb->skb_iif) | |
528 | return false; | |
529 | return ifindex == skb->skb_iif; | |
1da177e4 | 530 | } |
1da177e4 | 531 | |
3a7b6861 PNA |
532 | int tc_setup_flow_action(struct flow_action *flow_action, |
533 | const struct tcf_exts *exts); | |
aeb3fecd CW |
534 | int tc_setup_cb_call(struct tcf_block *block, enum tc_setup_type type, |
535 | void *type_data, bool err_stop); | |
e3ab786b | 536 | unsigned int tcf_exts_num_actions(struct tcf_exts *exts); |
717503b9 | 537 | |
5fd9fc4e | 538 | struct tc_cls_common_offload { |
5fd9fc4e JP |
539 | u32 chain_index; |
540 | __be16 protocol; | |
d7c1c8d2 | 541 | u32 prio; |
8f0b425a | 542 | struct netlink_ext_ack *extack; |
5fd9fc4e JP |
543 | }; |
544 | ||
a1b7c5fd JF |
545 | struct tc_cls_u32_knode { |
546 | struct tcf_exts *exts; | |
068ceb35 | 547 | struct tcf_result *res; |
e014860e | 548 | struct tc_u32_sel *sel; |
a1b7c5fd JF |
549 | u32 handle; |
550 | u32 val; | |
551 | u32 mask; | |
552 | u32 link_handle; | |
e014860e | 553 | u8 fshift; |
a1b7c5fd JF |
554 | }; |
555 | ||
556 | struct tc_cls_u32_hnode { | |
557 | u32 handle; | |
558 | u32 prio; | |
559 | unsigned int divisor; | |
560 | }; | |
561 | ||
562 | enum tc_clsu32_command { | |
563 | TC_CLSU32_NEW_KNODE, | |
564 | TC_CLSU32_REPLACE_KNODE, | |
565 | TC_CLSU32_DELETE_KNODE, | |
566 | TC_CLSU32_NEW_HNODE, | |
567 | TC_CLSU32_REPLACE_HNODE, | |
568 | TC_CLSU32_DELETE_HNODE, | |
569 | }; | |
570 | ||
571 | struct tc_cls_u32_offload { | |
5fd9fc4e | 572 | struct tc_cls_common_offload common; |
a1b7c5fd JF |
573 | /* knode values */ |
574 | enum tc_clsu32_command command; | |
575 | union { | |
576 | struct tc_cls_u32_knode knode; | |
577 | struct tc_cls_u32_hnode hnode; | |
578 | }; | |
579 | }; | |
580 | ||
7b06e8ae | 581 | static inline bool tc_can_offload(const struct net_device *dev) |
6843e7a2 | 582 | { |
70b5aee4 | 583 | return dev->features & NETIF_F_HW_TC; |
6843e7a2 JF |
584 | } |
585 | ||
f9eda14f QM |
586 | static inline bool tc_can_offload_extack(const struct net_device *dev, |
587 | struct netlink_ext_ack *extack) | |
588 | { | |
589 | bool can = tc_can_offload(dev); | |
590 | ||
591 | if (!can) | |
592 | NL_SET_ERR_MSG(extack, "TC offload is disabled on net device"); | |
593 | ||
594 | return can; | |
595 | } | |
596 | ||
878db9f0 JK |
597 | static inline bool |
598 | tc_cls_can_offload_and_chain0(const struct net_device *dev, | |
599 | struct tc_cls_common_offload *common) | |
600 | { | |
601 | if (!tc_can_offload_extack(dev, common->extack)) | |
602 | return false; | |
603 | if (common->chain_index) { | |
604 | NL_SET_ERR_MSG(common->extack, | |
605 | "Driver supports only offload of chain 0"); | |
606 | return false; | |
607 | } | |
608 | return true; | |
609 | } | |
610 | ||
55330f05 HHZ |
611 | static inline bool tc_skip_hw(u32 flags) |
612 | { | |
613 | return (flags & TCA_CLS_FLAGS_SKIP_HW) ? true : false; | |
614 | } | |
615 | ||
d34e3e18 SS |
616 | static inline bool tc_skip_sw(u32 flags) |
617 | { | |
618 | return (flags & TCA_CLS_FLAGS_SKIP_SW) ? true : false; | |
619 | } | |
620 | ||
621 | /* SKIP_HW and SKIP_SW are mutually exclusive flags. */ | |
622 | static inline bool tc_flags_valid(u32 flags) | |
623 | { | |
81c7288b MRL |
624 | if (flags & ~(TCA_CLS_FLAGS_SKIP_HW | TCA_CLS_FLAGS_SKIP_SW | |
625 | TCA_CLS_FLAGS_VERBOSE)) | |
d34e3e18 SS |
626 | return false; |
627 | ||
81c7288b | 628 | flags &= TCA_CLS_FLAGS_SKIP_HW | TCA_CLS_FLAGS_SKIP_SW; |
d34e3e18 SS |
629 | if (!(flags ^ (TCA_CLS_FLAGS_SKIP_HW | TCA_CLS_FLAGS_SKIP_SW))) |
630 | return false; | |
631 | ||
632 | return true; | |
633 | } | |
634 | ||
e696028a OG |
635 | static inline bool tc_in_hw(u32 flags) |
636 | { | |
637 | return (flags & TCA_CLS_FLAGS_IN_HW) ? true : false; | |
638 | } | |
639 | ||
34832e1c JK |
640 | static inline void |
641 | tc_cls_common_offload_init(struct tc_cls_common_offload *cls_common, | |
642 | const struct tcf_proto *tp, u32 flags, | |
643 | struct netlink_ext_ack *extack) | |
644 | { | |
645 | cls_common->chain_index = tp->chain->index; | |
646 | cls_common->protocol = tp->protocol; | |
647 | cls_common->prio = tp->prio; | |
81c7288b | 648 | if (tc_skip_sw(flags) || flags & TCA_CLS_FLAGS_VERBOSE) |
34832e1c JK |
649 | cls_common->extack = extack; |
650 | } | |
651 | ||
5b33f488 AV |
652 | enum tc_fl_command { |
653 | TC_CLSFLOWER_REPLACE, | |
654 | TC_CLSFLOWER_DESTROY, | |
10cbc684 | 655 | TC_CLSFLOWER_STATS, |
34738452 JP |
656 | TC_CLSFLOWER_TMPLT_CREATE, |
657 | TC_CLSFLOWER_TMPLT_DESTROY, | |
5b33f488 AV |
658 | }; |
659 | ||
660 | struct tc_cls_flower_offload { | |
5fd9fc4e | 661 | struct tc_cls_common_offload common; |
5b33f488 | 662 | enum tc_fl_command command; |
8208d21b | 663 | unsigned long cookie; |
8f256622 | 664 | struct flow_rule *rule; |
3b1903ef | 665 | struct flow_stats stats; |
384c181e | 666 | u32 classid; |
5b33f488 AV |
667 | }; |
668 | ||
8f256622 PNA |
669 | static inline struct flow_rule * |
670 | tc_cls_flower_offload_flow_rule(struct tc_cls_flower_offload *tc_flow_cmd) | |
671 | { | |
672 | return tc_flow_cmd->rule; | |
673 | } | |
674 | ||
b87f7936 YG |
675 | enum tc_matchall_command { |
676 | TC_CLSMATCHALL_REPLACE, | |
677 | TC_CLSMATCHALL_DESTROY, | |
b7fe4ab8 | 678 | TC_CLSMATCHALL_STATS, |
b87f7936 YG |
679 | }; |
680 | ||
681 | struct tc_cls_matchall_offload { | |
5fd9fc4e | 682 | struct tc_cls_common_offload common; |
b87f7936 | 683 | enum tc_matchall_command command; |
f00cbf19 | 684 | struct flow_rule *rule; |
b7fe4ab8 | 685 | struct flow_stats stats; |
b87f7936 YG |
686 | unsigned long cookie; |
687 | }; | |
688 | ||
332ae8e2 | 689 | enum tc_clsbpf_command { |
102740bd | 690 | TC_CLSBPF_OFFLOAD, |
68d64063 | 691 | TC_CLSBPF_STATS, |
332ae8e2 JK |
692 | }; |
693 | ||
694 | struct tc_cls_bpf_offload { | |
5fd9fc4e | 695 | struct tc_cls_common_offload common; |
332ae8e2 JK |
696 | enum tc_clsbpf_command command; |
697 | struct tcf_exts *exts; | |
698 | struct bpf_prog *prog; | |
102740bd | 699 | struct bpf_prog *oldprog; |
332ae8e2 JK |
700 | const char *name; |
701 | bool exts_integrated; | |
702 | }; | |
703 | ||
4e8b86c0 AN |
704 | struct tc_mqprio_qopt_offload { |
705 | /* struct tc_mqprio_qopt must always be the first element */ | |
706 | struct tc_mqprio_qopt qopt; | |
707 | u16 mode; | |
708 | u16 shaper; | |
709 | u32 flags; | |
710 | u64 min_rate[TC_QOPT_MAX_QUEUE]; | |
711 | u64 max_rate[TC_QOPT_MAX_QUEUE]; | |
712 | }; | |
1045ba77 JHS |
713 | |
714 | /* This structure holds cookie structure that is passed from user | |
715 | * to the kernel for actions and classifiers | |
716 | */ | |
717 | struct tc_cookie { | |
718 | u8 *data; | |
719 | u32 len; | |
eec94fdb | 720 | struct rcu_head rcu; |
1045ba77 | 721 | }; |
602f3baf | 722 | |
f34b4aac NF |
723 | struct tc_qopt_offload_stats { |
724 | struct gnet_stats_basic_packed *bstats; | |
725 | struct gnet_stats_queue *qstats; | |
726 | }; | |
727 | ||
f971b132 JK |
728 | enum tc_mq_command { |
729 | TC_MQ_CREATE, | |
730 | TC_MQ_DESTROY, | |
47c669a4 | 731 | TC_MQ_STATS, |
d577a3d2 JK |
732 | TC_MQ_GRAFT, |
733 | }; | |
734 | ||
735 | struct tc_mq_opt_offload_graft_params { | |
736 | unsigned long queue; | |
737 | u32 child_handle; | |
f971b132 JK |
738 | }; |
739 | ||
740 | struct tc_mq_qopt_offload { | |
741 | enum tc_mq_command command; | |
742 | u32 handle; | |
d577a3d2 JK |
743 | union { |
744 | struct tc_qopt_offload_stats stats; | |
745 | struct tc_mq_opt_offload_graft_params graft_params; | |
746 | }; | |
f971b132 JK |
747 | }; |
748 | ||
602f3baf NF |
749 | enum tc_red_command { |
750 | TC_RED_REPLACE, | |
751 | TC_RED_DESTROY, | |
752 | TC_RED_STATS, | |
753 | TC_RED_XSTATS, | |
bf2a752b | 754 | TC_RED_GRAFT, |
602f3baf NF |
755 | }; |
756 | ||
757 | struct tc_red_qopt_offload_params { | |
758 | u32 min; | |
759 | u32 max; | |
760 | u32 probability; | |
c0b7490b | 761 | u32 limit; |
602f3baf | 762 | bool is_ecn; |
190852a5 | 763 | bool is_harddrop; |
416ef9b1 | 764 | struct gnet_stats_queue *qstats; |
602f3baf | 765 | }; |
602f3baf NF |
766 | |
767 | struct tc_red_qopt_offload { | |
768 | enum tc_red_command command; | |
769 | u32 handle; | |
770 | u32 parent; | |
771 | union { | |
772 | struct tc_red_qopt_offload_params set; | |
f34b4aac | 773 | struct tc_qopt_offload_stats stats; |
602f3baf | 774 | struct red_stats *xstats; |
bf2a752b | 775 | u32 child_handle; |
602f3baf NF |
776 | }; |
777 | }; | |
778 | ||
890d8d23 JK |
779 | enum tc_gred_command { |
780 | TC_GRED_REPLACE, | |
781 | TC_GRED_DESTROY, | |
e49efd52 | 782 | TC_GRED_STATS, |
890d8d23 JK |
783 | }; |
784 | ||
785 | struct tc_gred_vq_qopt_offload_params { | |
786 | bool present; | |
787 | u32 limit; | |
788 | u32 prio; | |
789 | u32 min; | |
790 | u32 max; | |
791 | bool is_ecn; | |
792 | bool is_harddrop; | |
793 | u32 probability; | |
794 | /* Only need backlog, see struct tc_prio_qopt_offload_params */ | |
795 | u32 *backlog; | |
796 | }; | |
797 | ||
798 | struct tc_gred_qopt_offload_params { | |
799 | bool grio_on; | |
800 | bool wred_on; | |
801 | unsigned int dp_cnt; | |
802 | unsigned int dp_def; | |
803 | struct gnet_stats_queue *qstats; | |
804 | struct tc_gred_vq_qopt_offload_params tab[MAX_DPs]; | |
805 | }; | |
806 | ||
e49efd52 JK |
807 | struct tc_gred_qopt_offload_stats { |
808 | struct gnet_stats_basic_packed bstats[MAX_DPs]; | |
809 | struct gnet_stats_queue qstats[MAX_DPs]; | |
810 | struct red_stats *xstats[MAX_DPs]; | |
811 | }; | |
812 | ||
890d8d23 JK |
813 | struct tc_gred_qopt_offload { |
814 | enum tc_gred_command command; | |
815 | u32 handle; | |
816 | u32 parent; | |
817 | union { | |
818 | struct tc_gred_qopt_offload_params set; | |
e49efd52 | 819 | struct tc_gred_qopt_offload_stats stats; |
890d8d23 JK |
820 | }; |
821 | }; | |
822 | ||
7fdb61b4 NF |
823 | enum tc_prio_command { |
824 | TC_PRIO_REPLACE, | |
825 | TC_PRIO_DESTROY, | |
826 | TC_PRIO_STATS, | |
b9c7a7ac | 827 | TC_PRIO_GRAFT, |
7fdb61b4 NF |
828 | }; |
829 | ||
830 | struct tc_prio_qopt_offload_params { | |
831 | int bands; | |
832 | u8 priomap[TC_PRIO_MAX + 1]; | |
833 | /* In case that a prio qdisc is offloaded and now is changed to a | |
834 | * non-offloadedable config, it needs to update the backlog & qlen | |
835 | * values to negate the HW backlog & qlen values (and only them). | |
836 | */ | |
837 | struct gnet_stats_queue *qstats; | |
838 | }; | |
839 | ||
b9c7a7ac NF |
840 | struct tc_prio_qopt_offload_graft_params { |
841 | u8 band; | |
842 | u32 child_handle; | |
843 | }; | |
844 | ||
7fdb61b4 NF |
845 | struct tc_prio_qopt_offload { |
846 | enum tc_prio_command command; | |
847 | u32 handle; | |
848 | u32 parent; | |
849 | union { | |
850 | struct tc_prio_qopt_offload_params replace_params; | |
851 | struct tc_qopt_offload_stats stats; | |
b9c7a7ac | 852 | struct tc_prio_qopt_offload_graft_params graft_params; |
7fdb61b4 NF |
853 | }; |
854 | }; | |
b9c7a7ac | 855 | |
98b0e5f6 JK |
856 | enum tc_root_command { |
857 | TC_ROOT_GRAFT, | |
858 | }; | |
859 | ||
860 | struct tc_root_qopt_offload { | |
861 | enum tc_root_command command; | |
862 | u32 handle; | |
863 | bool ingress; | |
864 | }; | |
865 | ||
1da177e4 | 866 | #endif |