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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 | ||
3625750f PM |
35 | struct tcf_qevent { |
36 | struct tcf_block *block; | |
37 | struct tcf_block_ext_info info; | |
38 | struct tcf_proto __rcu *filter_chain; | |
39 | }; | |
40 | ||
acb67442 | 41 | struct tcf_block_cb; |
aaa908ff | 42 | bool tcf_queue_work(struct rcu_work *rwork, work_func_t func); |
acb67442 | 43 | |
8ae70032 | 44 | #ifdef CONFIG_NET_CLS |
1f3ed383 JP |
45 | struct tcf_chain *tcf_chain_get_by_act(struct tcf_block *block, |
46 | u32 chain_index); | |
1f3ed383 | 47 | void tcf_chain_put_by_act(struct tcf_chain *chain); |
bbf73830 VB |
48 | struct tcf_chain *tcf_get_next_chain(struct tcf_block *block, |
49 | struct tcf_chain *chain); | |
fe2923af | 50 | struct tcf_proto *tcf_get_next_proto(struct tcf_chain *chain, |
0fca55ed | 51 | struct tcf_proto *tp); |
f36fe1c4 | 52 | void tcf_block_netif_keep_dst(struct tcf_block *block); |
6529eaba | 53 | int tcf_block_get(struct tcf_block **p_block, |
8d1a77f9 AA |
54 | struct tcf_proto __rcu **p_filter_chain, struct Qdisc *q, |
55 | struct netlink_ext_ack *extack); | |
c7eb7d72 | 56 | int tcf_block_get_ext(struct tcf_block **p_block, struct Qdisc *q, |
8d1a77f9 AA |
57 | struct tcf_block_ext_info *ei, |
58 | struct netlink_ext_ack *extack); | |
6529eaba | 59 | void tcf_block_put(struct tcf_block *block); |
c7eb7d72 | 60 | void tcf_block_put_ext(struct tcf_block *block, struct Qdisc *q, |
8c4083b3 | 61 | struct tcf_block_ext_info *ei); |
44186460 | 62 | |
48617387 JP |
63 | static inline bool tcf_block_shared(struct tcf_block *block) |
64 | { | |
65 | return block->index; | |
66 | } | |
67 | ||
c1a970d0 VB |
68 | static inline bool tcf_block_non_null_shared(struct tcf_block *block) |
69 | { | |
70 | return block && block->index; | |
71 | } | |
72 | ||
44186460 JP |
73 | static inline struct Qdisc *tcf_block_q(struct tcf_block *block) |
74 | { | |
48617387 | 75 | WARN_ON(tcf_block_shared(block)); |
44186460 JP |
76 | return block->q; |
77 | } | |
78 | ||
87d83093 JP |
79 | int tcf_classify(struct sk_buff *skb, const struct tcf_proto *tp, |
80 | struct tcf_result *res, bool compat_mode); | |
7d17c544 PB |
81 | int tcf_classify_ingress(struct sk_buff *skb, |
82 | const struct tcf_block *ingress_block, | |
83 | const struct tcf_proto *tp, struct tcf_result *res, | |
84 | bool compat_mode); | |
87d83093 | 85 | |
8ae70032 | 86 | #else |
88c44a52 PJV |
87 | static inline bool tcf_block_shared(struct tcf_block *block) |
88 | { | |
89 | return false; | |
90 | } | |
91 | ||
c1a970d0 VB |
92 | static inline bool tcf_block_non_null_shared(struct tcf_block *block) |
93 | { | |
94 | return false; | |
95 | } | |
96 | ||
6529eaba JP |
97 | static inline |
98 | int tcf_block_get(struct tcf_block **p_block, | |
3c149091 SM |
99 | struct tcf_proto __rcu **p_filter_chain, struct Qdisc *q, |
100 | struct netlink_ext_ack *extack) | |
6529eaba JP |
101 | { |
102 | return 0; | |
103 | } | |
104 | ||
8c4083b3 | 105 | static inline |
c7eb7d72 | 106 | int tcf_block_get_ext(struct tcf_block **p_block, struct Qdisc *q, |
33c30a8b QM |
107 | struct tcf_block_ext_info *ei, |
108 | struct netlink_ext_ack *extack) | |
8c4083b3 JP |
109 | { |
110 | return 0; | |
111 | } | |
112 | ||
6529eaba | 113 | static inline void tcf_block_put(struct tcf_block *block) |
8ae70032 JP |
114 | { |
115 | } | |
87d83093 | 116 | |
8c4083b3 | 117 | static inline |
c7eb7d72 | 118 | void tcf_block_put_ext(struct tcf_block *block, struct Qdisc *q, |
8c4083b3 JP |
119 | struct tcf_block_ext_info *ei) |
120 | { | |
121 | } | |
122 | ||
44186460 JP |
123 | static inline struct Qdisc *tcf_block_q(struct tcf_block *block) |
124 | { | |
125 | return NULL; | |
126 | } | |
127 | ||
acb67442 | 128 | static inline |
a7323311 | 129 | int tc_setup_cb_block_register(struct tcf_block *block, flow_setup_cb_t *cb, |
acb67442 JP |
130 | void *cb_priv) |
131 | { | |
132 | return 0; | |
133 | } | |
134 | ||
135 | static inline | |
a7323311 | 136 | void tc_setup_cb_block_unregister(struct tcf_block *block, flow_setup_cb_t *cb, |
acb67442 JP |
137 | void *cb_priv) |
138 | { | |
139 | } | |
140 | ||
87d83093 JP |
141 | static inline int tcf_classify(struct sk_buff *skb, const struct tcf_proto *tp, |
142 | struct tcf_result *res, bool compat_mode) | |
143 | { | |
144 | return TC_ACT_UNSPEC; | |
145 | } | |
9410c940 PB |
146 | |
147 | static inline int tcf_classify_ingress(struct sk_buff *skb, | |
7d17c544 | 148 | const struct tcf_block *ingress_block, |
9410c940 PB |
149 | const struct tcf_proto *tp, |
150 | struct tcf_result *res, bool compat_mode) | |
151 | { | |
152 | return TC_ACT_UNSPEC; | |
153 | } | |
154 | ||
8ae70032 | 155 | #endif |
cf1facda | 156 | |
1da177e4 LT |
157 | static inline unsigned long |
158 | __cls_set_class(unsigned long *clp, unsigned long cl) | |
159 | { | |
a0efb80c | 160 | return xchg(clp, cl); |
1da177e4 LT |
161 | } |
162 | ||
2e24cd75 CW |
163 | static inline void |
164 | __tcf_bind_filter(struct Qdisc *q, struct tcf_result *r, unsigned long base) | |
1da177e4 | 165 | { |
2e24cd75 | 166 | unsigned long cl; |
34e3759c | 167 | |
2e24cd75 CW |
168 | cl = q->ops->cl_ops->bind_tcf(q, base, r->classid); |
169 | cl = __cls_set_class(&r->class, cl); | |
170 | if (cl) | |
171 | q->ops->cl_ops->unbind_tcf(q, cl); | |
1da177e4 LT |
172 | } |
173 | ||
174 | static inline void | |
175 | tcf_bind_filter(struct tcf_proto *tp, struct tcf_result *r, unsigned long base) | |
176 | { | |
34e3759c | 177 | struct Qdisc *q = tp->chain->block->q; |
1da177e4 | 178 | |
34e3759c JP |
179 | /* Check q as it is not set for shared blocks. In that case, |
180 | * setting class is not supported. | |
181 | */ | |
182 | if (!q) | |
183 | return; | |
2e24cd75 CW |
184 | sch_tree_lock(q); |
185 | __tcf_bind_filter(q, r, base); | |
186 | sch_tree_unlock(q); | |
187 | } | |
188 | ||
189 | static inline void | |
190 | __tcf_unbind_filter(struct Qdisc *q, struct tcf_result *r) | |
191 | { | |
192 | unsigned long cl; | |
193 | ||
194 | if ((cl = __cls_set_class(&r->class, 0)) != 0) | |
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 | 202 | |
34e3759c JP |
203 | if (!q) |
204 | return; | |
2e24cd75 | 205 | __tcf_unbind_filter(q, r); |
1da177e4 LT |
206 | } |
207 | ||
fd2c3ef7 | 208 | struct tcf_exts { |
1da177e4 | 209 | #ifdef CONFIG_NET_CLS_ACT |
33be6271 | 210 | __u32 type; /* for backward compat(TCA_OLD_COMPAT) */ |
22dc13c8 WC |
211 | int nr_actions; |
212 | struct tc_action **actions; | |
e4b95c41 | 213 | struct net *net; |
1da177e4 | 214 | #endif |
5da57f42 WC |
215 | /* Map to export classifier specific extension TLV types to the |
216 | * generic extensions API. Unsupported extensions must be set to 0. | |
217 | */ | |
1da177e4 LT |
218 | int action; |
219 | int police; | |
220 | }; | |
221 | ||
14215108 CW |
222 | static inline int tcf_exts_init(struct tcf_exts *exts, struct net *net, |
223 | int action, int police) | |
33be6271 WC |
224 | { |
225 | #ifdef CONFIG_NET_CLS_ACT | |
5da57f42 | 226 | exts->type = 0; |
22dc13c8 | 227 | exts->nr_actions = 0; |
14215108 | 228 | exts->net = net; |
22dc13c8 WC |
229 | exts->actions = kcalloc(TCA_ACT_MAX_PRIO, sizeof(struct tc_action *), |
230 | GFP_KERNEL); | |
b9a24bb7 WC |
231 | if (!exts->actions) |
232 | return -ENOMEM; | |
33be6271 | 233 | #endif |
5da57f42 WC |
234 | exts->action = action; |
235 | exts->police = police; | |
b9a24bb7 | 236 | return 0; |
33be6271 WC |
237 | } |
238 | ||
e4b95c41 CW |
239 | /* Return false if the netns is being destroyed in cleanup_net(). Callers |
240 | * need to do cleanup synchronously in this case, otherwise may race with | |
241 | * tc_action_net_exit(). Return true for other cases. | |
242 | */ | |
243 | static inline bool tcf_exts_get_net(struct tcf_exts *exts) | |
244 | { | |
245 | #ifdef CONFIG_NET_CLS_ACT | |
246 | exts->net = maybe_get_net(exts->net); | |
247 | return exts->net != NULL; | |
248 | #else | |
249 | return true; | |
250 | #endif | |
251 | } | |
252 | ||
253 | static inline void tcf_exts_put_net(struct tcf_exts *exts) | |
254 | { | |
255 | #ifdef CONFIG_NET_CLS_ACT | |
256 | if (exts->net) | |
257 | put_net(exts->net); | |
258 | #endif | |
259 | } | |
260 | ||
22dc13c8 | 261 | #ifdef CONFIG_NET_CLS_ACT |
244cd96a CW |
262 | #define tcf_exts_for_each_action(i, a, exts) \ |
263 | for (i = 0; i < TCA_ACT_MAX_PRIO && ((a) = (exts)->actions[i]); i++) | |
264 | #else | |
265 | #define tcf_exts_for_each_action(i, a, exts) \ | |
191672ca | 266 | for (; 0; (void)(i), (void)(a), (void)(exts)) |
22dc13c8 | 267 | #endif |
22dc13c8 | 268 | |
d897a638 JK |
269 | static inline void |
270 | tcf_exts_stats_update(const struct tcf_exts *exts, | |
4b61d3e8 | 271 | u64 bytes, u64 packets, u64 drops, u64 lastuse, |
93a129eb | 272 | u8 used_hw_stats, bool used_hw_stats_valid) |
d897a638 JK |
273 | { |
274 | #ifdef CONFIG_NET_CLS_ACT | |
275 | int i; | |
276 | ||
277 | preempt_disable(); | |
278 | ||
279 | for (i = 0; i < exts->nr_actions; i++) { | |
280 | struct tc_action *a = exts->actions[i]; | |
281 | ||
4b61d3e8 PL |
282 | tcf_action_stats_update(a, bytes, packets, drops, |
283 | lastuse, true); | |
93a129eb JP |
284 | a->used_hw_stats = used_hw_stats; |
285 | a->used_hw_stats_valid = used_hw_stats_valid; | |
d897a638 JK |
286 | } |
287 | ||
288 | preempt_enable(); | |
289 | #endif | |
290 | } | |
291 | ||
3bcc0cec JP |
292 | /** |
293 | * tcf_exts_has_actions - check if at least one action is present | |
294 | * @exts: tc filter extensions handle | |
295 | * | |
296 | * Returns true if at least one action is present. | |
297 | */ | |
298 | static inline bool tcf_exts_has_actions(struct tcf_exts *exts) | |
299 | { | |
2734437e | 300 | #ifdef CONFIG_NET_CLS_ACT |
3bcc0cec JP |
301 | return exts->nr_actions; |
302 | #else | |
303 | return false; | |
304 | #endif | |
305 | } | |
2734437e | 306 | |
af69afc5 JP |
307 | /** |
308 | * tcf_exts_exec - execute tc filter extensions | |
309 | * @skb: socket buffer | |
310 | * @exts: tc filter extensions handle | |
311 | * @res: desired result | |
312 | * | |
af089e70 | 313 | * Executes all configured extensions. Returns TC_ACT_OK on a normal execution, |
af69afc5 JP |
314 | * a negative number if the filter must be considered unmatched or |
315 | * a positive action code (TC_ACT_*) which must be returned to the | |
316 | * underlying layer. | |
317 | */ | |
318 | static inline int | |
319 | tcf_exts_exec(struct sk_buff *skb, struct tcf_exts *exts, | |
320 | struct tcf_result *res) | |
321 | { | |
322 | #ifdef CONFIG_NET_CLS_ACT | |
ec1a9cca | 323 | return tcf_action_exec(skb, exts->actions, exts->nr_actions, res); |
af69afc5 | 324 | #endif |
af089e70 | 325 | return TC_ACT_OK; |
af69afc5 JP |
326 | } |
327 | ||
5c15257f JP |
328 | int tcf_exts_validate(struct net *net, struct tcf_proto *tp, |
329 | struct nlattr **tb, struct nlattr *rate_tlv, | |
ec6743a1 | 330 | struct tcf_exts *exts, bool ovr, bool rtnl_held, |
50a56190 | 331 | struct netlink_ext_ack *extack); |
18d0264f | 332 | void tcf_exts_destroy(struct tcf_exts *exts); |
9b0d4446 | 333 | void tcf_exts_change(struct tcf_exts *dst, struct tcf_exts *src); |
5da57f42 | 334 | int tcf_exts_dump(struct sk_buff *skb, struct tcf_exts *exts); |
ca44b738 | 335 | int tcf_exts_terse_dump(struct sk_buff *skb, struct tcf_exts *exts); |
5da57f42 | 336 | int tcf_exts_dump_stats(struct sk_buff *skb, struct tcf_exts *exts); |
1da177e4 LT |
337 | |
338 | /** | |
339 | * struct tcf_pkt_info - packet information | |
340 | */ | |
fd2c3ef7 | 341 | struct tcf_pkt_info { |
1da177e4 LT |
342 | unsigned char * ptr; |
343 | int nexthdr; | |
344 | }; | |
345 | ||
346 | #ifdef CONFIG_NET_EMATCH | |
347 | ||
348 | struct tcf_ematch_ops; | |
349 | ||
350 | /** | |
351 | * struct tcf_ematch - extended match (ematch) | |
352 | * | |
353 | * @matchid: identifier to allow userspace to reidentify a match | |
354 | * @flags: flags specifying attributes and the relation to other matches | |
355 | * @ops: the operations lookup table of the corresponding ematch module | |
356 | * @datalen: length of the ematch specific configuration data | |
357 | * @data: ematch specific data | |
358 | */ | |
fd2c3ef7 | 359 | struct tcf_ematch { |
1da177e4 LT |
360 | struct tcf_ematch_ops * ops; |
361 | unsigned long data; | |
362 | unsigned int datalen; | |
363 | u16 matchid; | |
364 | u16 flags; | |
82a470f1 | 365 | struct net *net; |
1da177e4 LT |
366 | }; |
367 | ||
368 | static inline int tcf_em_is_container(struct tcf_ematch *em) | |
369 | { | |
370 | return !em->ops; | |
371 | } | |
372 | ||
373 | static inline int tcf_em_is_simple(struct tcf_ematch *em) | |
374 | { | |
375 | return em->flags & TCF_EM_SIMPLE; | |
376 | } | |
377 | ||
378 | static inline int tcf_em_is_inverted(struct tcf_ematch *em) | |
379 | { | |
380 | return em->flags & TCF_EM_INVERT; | |
381 | } | |
382 | ||
383 | static inline int tcf_em_last_match(struct tcf_ematch *em) | |
384 | { | |
385 | return (em->flags & TCF_EM_REL_MASK) == TCF_EM_REL_END; | |
386 | } | |
387 | ||
388 | static inline int tcf_em_early_end(struct tcf_ematch *em, int result) | |
389 | { | |
390 | if (tcf_em_last_match(em)) | |
391 | return 1; | |
392 | ||
393 | if (result == 0 && em->flags & TCF_EM_REL_AND) | |
394 | return 1; | |
395 | ||
396 | if (result != 0 && em->flags & TCF_EM_REL_OR) | |
397 | return 1; | |
398 | ||
399 | return 0; | |
400 | } | |
401 | ||
402 | /** | |
403 | * struct tcf_ematch_tree - ematch tree handle | |
404 | * | |
405 | * @hdr: ematch tree header supplied by userspace | |
406 | * @matches: array of ematches | |
407 | */ | |
fd2c3ef7 | 408 | struct tcf_ematch_tree { |
1da177e4 LT |
409 | struct tcf_ematch_tree_hdr hdr; |
410 | struct tcf_ematch * matches; | |
411 | ||
412 | }; | |
413 | ||
414 | /** | |
415 | * struct tcf_ematch_ops - ematch module operations | |
416 | * | |
417 | * @kind: identifier (kind) of this ematch module | |
418 | * @datalen: length of expected configuration data (optional) | |
419 | * @change: called during validation (optional) | |
420 | * @match: called during ematch tree evaluation, must return 1/0 | |
421 | * @destroy: called during destroyage (optional) | |
422 | * @dump: called during dumping process (optional) | |
423 | * @owner: owner, must be set to THIS_MODULE | |
424 | * @link: link to previous/next ematch module (internal use) | |
425 | */ | |
fd2c3ef7 | 426 | struct tcf_ematch_ops { |
1da177e4 LT |
427 | int kind; |
428 | int datalen; | |
82a470f1 | 429 | int (*change)(struct net *net, void *, |
1da177e4 LT |
430 | int, struct tcf_ematch *); |
431 | int (*match)(struct sk_buff *, struct tcf_ematch *, | |
432 | struct tcf_pkt_info *); | |
82a470f1 | 433 | void (*destroy)(struct tcf_ematch *); |
1da177e4 LT |
434 | int (*dump)(struct sk_buff *, struct tcf_ematch *); |
435 | struct module *owner; | |
436 | struct list_head link; | |
437 | }; | |
438 | ||
5c15257f JP |
439 | int tcf_em_register(struct tcf_ematch_ops *); |
440 | void tcf_em_unregister(struct tcf_ematch_ops *); | |
441 | int tcf_em_tree_validate(struct tcf_proto *, struct nlattr *, | |
442 | struct tcf_ematch_tree *); | |
82a470f1 | 443 | void tcf_em_tree_destroy(struct tcf_ematch_tree *); |
5c15257f JP |
444 | int tcf_em_tree_dump(struct sk_buff *, struct tcf_ematch_tree *, int); |
445 | int __tcf_em_tree_match(struct sk_buff *, struct tcf_ematch_tree *, | |
446 | struct tcf_pkt_info *); | |
1da177e4 | 447 | |
1da177e4 LT |
448 | /** |
449 | * tcf_em_tree_match - evaulate an ematch tree | |
450 | * | |
451 | * @skb: socket buffer of the packet in question | |
452 | * @tree: ematch tree to be used for evaluation | |
453 | * @info: packet information examined by classifier | |
454 | * | |
455 | * This function matches @skb against the ematch tree in @tree by going | |
456 | * through all ematches respecting their logic relations returning | |
457 | * as soon as the result is obvious. | |
458 | * | |
459 | * Returns 1 if the ematch tree as-one matches, no ematches are configured | |
460 | * or ematch is not enabled in the kernel, otherwise 0 is returned. | |
461 | */ | |
462 | static inline int tcf_em_tree_match(struct sk_buff *skb, | |
463 | struct tcf_ematch_tree *tree, | |
464 | struct tcf_pkt_info *info) | |
465 | { | |
466 | if (tree->hdr.nmatches) | |
467 | return __tcf_em_tree_match(skb, tree, info); | |
468 | else | |
469 | return 1; | |
470 | } | |
471 | ||
db3d99c0 PM |
472 | #define MODULE_ALIAS_TCF_EMATCH(kind) MODULE_ALIAS("ematch-kind-" __stringify(kind)) |
473 | ||
1da177e4 LT |
474 | #else /* CONFIG_NET_EMATCH */ |
475 | ||
fd2c3ef7 | 476 | struct tcf_ematch_tree { |
1da177e4 LT |
477 | }; |
478 | ||
479 | #define tcf_em_tree_validate(tp, tb, t) ((void)(t), 0) | |
82a470f1 | 480 | #define tcf_em_tree_destroy(t) do { (void)(t); } while(0) |
1da177e4 | 481 | #define tcf_em_tree_dump(skb, t, tlv) (0) |
1da177e4 LT |
482 | #define tcf_em_tree_match(skb, t, info) ((void)(info), 1) |
483 | ||
484 | #endif /* CONFIG_NET_EMATCH */ | |
485 | ||
486 | static inline unsigned char * tcf_get_base_ptr(struct sk_buff *skb, int layer) | |
487 | { | |
488 | switch (layer) { | |
489 | case TCF_LAYER_LINK: | |
d3303a65 | 490 | return skb_mac_header(skb); |
1da177e4 | 491 | case TCF_LAYER_NETWORK: |
d56f90a7 | 492 | return skb_network_header(skb); |
1da177e4 | 493 | case TCF_LAYER_TRANSPORT: |
9c70220b | 494 | return skb_transport_header(skb); |
1da177e4 LT |
495 | } |
496 | ||
497 | return NULL; | |
498 | } | |
499 | ||
eddc9ec5 ACM |
500 | static inline int tcf_valid_offset(const struct sk_buff *skb, |
501 | const unsigned char *ptr, const int len) | |
1da177e4 | 502 | { |
da521b2c DM |
503 | return likely((ptr + len) <= skb_tail_pointer(skb) && |
504 | ptr >= skb->head && | |
505 | (ptr <= (ptr + len))); | |
1da177e4 LT |
506 | } |
507 | ||
1da177e4 | 508 | static inline int |
1057c55f AA |
509 | tcf_change_indev(struct net *net, struct nlattr *indev_tlv, |
510 | struct netlink_ext_ack *extack) | |
1da177e4 | 511 | { |
2519a602 WC |
512 | char indev[IFNAMSIZ]; |
513 | struct net_device *dev; | |
514 | ||
872f6903 | 515 | if (nla_strscpy(indev, indev_tlv, IFNAMSIZ) < 0) { |
e4a58ef3 GN |
516 | NL_SET_ERR_MSG_ATTR(extack, indev_tlv, |
517 | "Interface name too long"); | |
1da177e4 | 518 | return -EINVAL; |
1057c55f | 519 | } |
2519a602 | 520 | dev = __dev_get_by_name(net, indev); |
e4a58ef3 GN |
521 | if (!dev) { |
522 | NL_SET_ERR_MSG_ATTR(extack, indev_tlv, | |
523 | "Network device not found"); | |
2519a602 | 524 | return -ENODEV; |
e4a58ef3 | 525 | } |
2519a602 | 526 | return dev->ifindex; |
1da177e4 LT |
527 | } |
528 | ||
2519a602 WC |
529 | static inline bool |
530 | tcf_match_indev(struct sk_buff *skb, int ifindex) | |
1da177e4 | 531 | { |
2519a602 WC |
532 | if (!ifindex) |
533 | return true; | |
534 | if (!skb->skb_iif) | |
535 | return false; | |
536 | return ifindex == skb->skb_iif; | |
1da177e4 | 537 | } |
1da177e4 | 538 | |
3a7b6861 | 539 | int tc_setup_flow_action(struct flow_action *flow_action, |
b15e7a6e | 540 | const struct tcf_exts *exts); |
5a6ff4b1 VB |
541 | void tc_cleanup_flow_action(struct flow_action *flow_action); |
542 | ||
aeb3fecd | 543 | int tc_setup_cb_call(struct tcf_block *block, enum tc_setup_type type, |
40119211 VB |
544 | void *type_data, bool err_stop, bool rtnl_held); |
545 | int tc_setup_cb_add(struct tcf_block *block, struct tcf_proto *tp, | |
546 | enum tc_setup_type type, void *type_data, bool err_stop, | |
547 | u32 *flags, unsigned int *in_hw_count, bool rtnl_held); | |
548 | int tc_setup_cb_replace(struct tcf_block *block, struct tcf_proto *tp, | |
549 | enum tc_setup_type type, void *type_data, bool err_stop, | |
550 | u32 *old_flags, unsigned int *old_in_hw_count, | |
551 | u32 *new_flags, unsigned int *new_in_hw_count, | |
552 | bool rtnl_held); | |
553 | int tc_setup_cb_destroy(struct tcf_block *block, struct tcf_proto *tp, | |
554 | enum tc_setup_type type, void *type_data, bool err_stop, | |
555 | u32 *flags, unsigned int *in_hw_count, bool rtnl_held); | |
556 | int tc_setup_cb_reoffload(struct tcf_block *block, struct tcf_proto *tp, | |
557 | bool add, flow_setup_cb_t *cb, | |
558 | enum tc_setup_type type, void *type_data, | |
559 | void *cb_priv, u32 *flags, unsigned int *in_hw_count); | |
e3ab786b | 560 | unsigned int tcf_exts_num_actions(struct tcf_exts *exts); |
717503b9 | 561 | |
3625750f PM |
562 | #ifdef CONFIG_NET_CLS_ACT |
563 | int tcf_qevent_init(struct tcf_qevent *qe, struct Qdisc *sch, | |
564 | enum flow_block_binder_type binder_type, | |
565 | struct nlattr *block_index_attr, | |
566 | struct netlink_ext_ack *extack); | |
567 | void tcf_qevent_destroy(struct tcf_qevent *qe, struct Qdisc *sch); | |
568 | int tcf_qevent_validate_change(struct tcf_qevent *qe, struct nlattr *block_index_attr, | |
569 | struct netlink_ext_ack *extack); | |
570 | struct sk_buff *tcf_qevent_handle(struct tcf_qevent *qe, struct Qdisc *sch, struct sk_buff *skb, | |
55f656cd | 571 | struct sk_buff **to_free, int *ret); |
3625750f PM |
572 | int tcf_qevent_dump(struct sk_buff *skb, int attr_name, struct tcf_qevent *qe); |
573 | #else | |
574 | static inline int tcf_qevent_init(struct tcf_qevent *qe, struct Qdisc *sch, | |
575 | enum flow_block_binder_type binder_type, | |
576 | struct nlattr *block_index_attr, | |
577 | struct netlink_ext_ack *extack) | |
578 | { | |
579 | return 0; | |
580 | } | |
581 | ||
582 | static inline void tcf_qevent_destroy(struct tcf_qevent *qe, struct Qdisc *sch) | |
583 | { | |
584 | } | |
585 | ||
586 | static inline int tcf_qevent_validate_change(struct tcf_qevent *qe, struct nlattr *block_index_attr, | |
587 | struct netlink_ext_ack *extack) | |
588 | { | |
589 | return 0; | |
590 | } | |
591 | ||
592 | static inline struct sk_buff * | |
593 | tcf_qevent_handle(struct tcf_qevent *qe, struct Qdisc *sch, struct sk_buff *skb, | |
55f656cd | 594 | struct sk_buff **to_free, int *ret) |
3625750f PM |
595 | { |
596 | return skb; | |
597 | } | |
598 | ||
599 | static inline int tcf_qevent_dump(struct sk_buff *skb, int attr_name, struct tcf_qevent *qe) | |
600 | { | |
601 | return 0; | |
602 | } | |
603 | #endif | |
604 | ||
a1b7c5fd JF |
605 | struct tc_cls_u32_knode { |
606 | struct tcf_exts *exts; | |
068ceb35 | 607 | struct tcf_result *res; |
e014860e | 608 | struct tc_u32_sel *sel; |
a1b7c5fd JF |
609 | u32 handle; |
610 | u32 val; | |
611 | u32 mask; | |
612 | u32 link_handle; | |
e014860e | 613 | u8 fshift; |
a1b7c5fd JF |
614 | }; |
615 | ||
616 | struct tc_cls_u32_hnode { | |
617 | u32 handle; | |
618 | u32 prio; | |
619 | unsigned int divisor; | |
620 | }; | |
621 | ||
622 | enum tc_clsu32_command { | |
623 | TC_CLSU32_NEW_KNODE, | |
624 | TC_CLSU32_REPLACE_KNODE, | |
625 | TC_CLSU32_DELETE_KNODE, | |
626 | TC_CLSU32_NEW_HNODE, | |
627 | TC_CLSU32_REPLACE_HNODE, | |
628 | TC_CLSU32_DELETE_HNODE, | |
629 | }; | |
630 | ||
631 | struct tc_cls_u32_offload { | |
f9e30088 | 632 | struct flow_cls_common_offload common; |
a1b7c5fd JF |
633 | /* knode values */ |
634 | enum tc_clsu32_command command; | |
635 | union { | |
636 | struct tc_cls_u32_knode knode; | |
637 | struct tc_cls_u32_hnode hnode; | |
638 | }; | |
639 | }; | |
640 | ||
7b06e8ae | 641 | static inline bool tc_can_offload(const struct net_device *dev) |
6843e7a2 | 642 | { |
70b5aee4 | 643 | return dev->features & NETIF_F_HW_TC; |
6843e7a2 JF |
644 | } |
645 | ||
f9eda14f QM |
646 | static inline bool tc_can_offload_extack(const struct net_device *dev, |
647 | struct netlink_ext_ack *extack) | |
648 | { | |
649 | bool can = tc_can_offload(dev); | |
650 | ||
651 | if (!can) | |
652 | NL_SET_ERR_MSG(extack, "TC offload is disabled on net device"); | |
653 | ||
654 | return can; | |
655 | } | |
656 | ||
878db9f0 JK |
657 | static inline bool |
658 | tc_cls_can_offload_and_chain0(const struct net_device *dev, | |
f9e30088 | 659 | struct flow_cls_common_offload *common) |
878db9f0 JK |
660 | { |
661 | if (!tc_can_offload_extack(dev, common->extack)) | |
662 | return false; | |
663 | if (common->chain_index) { | |
664 | NL_SET_ERR_MSG(common->extack, | |
665 | "Driver supports only offload of chain 0"); | |
666 | return false; | |
667 | } | |
668 | return true; | |
669 | } | |
670 | ||
55330f05 HHZ |
671 | static inline bool tc_skip_hw(u32 flags) |
672 | { | |
673 | return (flags & TCA_CLS_FLAGS_SKIP_HW) ? true : false; | |
674 | } | |
675 | ||
d34e3e18 SS |
676 | static inline bool tc_skip_sw(u32 flags) |
677 | { | |
678 | return (flags & TCA_CLS_FLAGS_SKIP_SW) ? true : false; | |
679 | } | |
680 | ||
681 | /* SKIP_HW and SKIP_SW are mutually exclusive flags. */ | |
682 | static inline bool tc_flags_valid(u32 flags) | |
683 | { | |
81c7288b MRL |
684 | if (flags & ~(TCA_CLS_FLAGS_SKIP_HW | TCA_CLS_FLAGS_SKIP_SW | |
685 | TCA_CLS_FLAGS_VERBOSE)) | |
d34e3e18 SS |
686 | return false; |
687 | ||
81c7288b | 688 | flags &= TCA_CLS_FLAGS_SKIP_HW | TCA_CLS_FLAGS_SKIP_SW; |
d34e3e18 SS |
689 | if (!(flags ^ (TCA_CLS_FLAGS_SKIP_HW | TCA_CLS_FLAGS_SKIP_SW))) |
690 | return false; | |
691 | ||
692 | return true; | |
693 | } | |
694 | ||
e696028a OG |
695 | static inline bool tc_in_hw(u32 flags) |
696 | { | |
697 | return (flags & TCA_CLS_FLAGS_IN_HW) ? true : false; | |
698 | } | |
699 | ||
34832e1c | 700 | static inline void |
f9e30088 | 701 | tc_cls_common_offload_init(struct flow_cls_common_offload *cls_common, |
34832e1c JK |
702 | const struct tcf_proto *tp, u32 flags, |
703 | struct netlink_ext_ack *extack) | |
704 | { | |
705 | cls_common->chain_index = tp->chain->index; | |
706 | cls_common->protocol = tp->protocol; | |
ef01adae | 707 | cls_common->prio = tp->prio >> 16; |
81c7288b | 708 | if (tc_skip_sw(flags) || flags & TCA_CLS_FLAGS_VERBOSE) |
34832e1c JK |
709 | cls_common->extack = extack; |
710 | } | |
711 | ||
b87f7936 YG |
712 | enum tc_matchall_command { |
713 | TC_CLSMATCHALL_REPLACE, | |
714 | TC_CLSMATCHALL_DESTROY, | |
b7fe4ab8 | 715 | TC_CLSMATCHALL_STATS, |
b87f7936 YG |
716 | }; |
717 | ||
718 | struct tc_cls_matchall_offload { | |
f9e30088 | 719 | struct flow_cls_common_offload common; |
b87f7936 | 720 | enum tc_matchall_command command; |
f00cbf19 | 721 | struct flow_rule *rule; |
b7fe4ab8 | 722 | struct flow_stats stats; |
b87f7936 YG |
723 | unsigned long cookie; |
724 | }; | |
725 | ||
332ae8e2 | 726 | enum tc_clsbpf_command { |
102740bd | 727 | TC_CLSBPF_OFFLOAD, |
68d64063 | 728 | TC_CLSBPF_STATS, |
332ae8e2 JK |
729 | }; |
730 | ||
731 | struct tc_cls_bpf_offload { | |
f9e30088 | 732 | struct flow_cls_common_offload common; |
332ae8e2 JK |
733 | enum tc_clsbpf_command command; |
734 | struct tcf_exts *exts; | |
735 | struct bpf_prog *prog; | |
102740bd | 736 | struct bpf_prog *oldprog; |
332ae8e2 JK |
737 | const char *name; |
738 | bool exts_integrated; | |
739 | }; | |
740 | ||
4e8b86c0 AN |
741 | struct tc_mqprio_qopt_offload { |
742 | /* struct tc_mqprio_qopt must always be the first element */ | |
743 | struct tc_mqprio_qopt qopt; | |
744 | u16 mode; | |
745 | u16 shaper; | |
746 | u32 flags; | |
747 | u64 min_rate[TC_QOPT_MAX_QUEUE]; | |
748 | u64 max_rate[TC_QOPT_MAX_QUEUE]; | |
749 | }; | |
1045ba77 JHS |
750 | |
751 | /* This structure holds cookie structure that is passed from user | |
752 | * to the kernel for actions and classifiers | |
753 | */ | |
754 | struct tc_cookie { | |
755 | u8 *data; | |
756 | u32 len; | |
eec94fdb | 757 | struct rcu_head rcu; |
1045ba77 | 758 | }; |
602f3baf | 759 | |
f34b4aac NF |
760 | struct tc_qopt_offload_stats { |
761 | struct gnet_stats_basic_packed *bstats; | |
762 | struct gnet_stats_queue *qstats; | |
763 | }; | |
764 | ||
f971b132 JK |
765 | enum tc_mq_command { |
766 | TC_MQ_CREATE, | |
767 | TC_MQ_DESTROY, | |
47c669a4 | 768 | TC_MQ_STATS, |
d577a3d2 JK |
769 | TC_MQ_GRAFT, |
770 | }; | |
771 | ||
772 | struct tc_mq_opt_offload_graft_params { | |
773 | unsigned long queue; | |
774 | u32 child_handle; | |
f971b132 JK |
775 | }; |
776 | ||
777 | struct tc_mq_qopt_offload { | |
778 | enum tc_mq_command command; | |
779 | u32 handle; | |
d577a3d2 JK |
780 | union { |
781 | struct tc_qopt_offload_stats stats; | |
782 | struct tc_mq_opt_offload_graft_params graft_params; | |
783 | }; | |
f971b132 JK |
784 | }; |
785 | ||
602f3baf NF |
786 | enum tc_red_command { |
787 | TC_RED_REPLACE, | |
788 | TC_RED_DESTROY, | |
789 | TC_RED_STATS, | |
790 | TC_RED_XSTATS, | |
bf2a752b | 791 | TC_RED_GRAFT, |
602f3baf NF |
792 | }; |
793 | ||
794 | struct tc_red_qopt_offload_params { | |
795 | u32 min; | |
796 | u32 max; | |
797 | u32 probability; | |
c0b7490b | 798 | u32 limit; |
602f3baf | 799 | bool is_ecn; |
190852a5 | 800 | bool is_harddrop; |
0a7fad23 | 801 | bool is_nodrop; |
416ef9b1 | 802 | struct gnet_stats_queue *qstats; |
602f3baf | 803 | }; |
602f3baf NF |
804 | |
805 | struct tc_red_qopt_offload { | |
806 | enum tc_red_command command; | |
807 | u32 handle; | |
808 | u32 parent; | |
809 | union { | |
810 | struct tc_red_qopt_offload_params set; | |
f34b4aac | 811 | struct tc_qopt_offload_stats stats; |
602f3baf | 812 | struct red_stats *xstats; |
bf2a752b | 813 | u32 child_handle; |
602f3baf NF |
814 | }; |
815 | }; | |
816 | ||
890d8d23 JK |
817 | enum tc_gred_command { |
818 | TC_GRED_REPLACE, | |
819 | TC_GRED_DESTROY, | |
e49efd52 | 820 | TC_GRED_STATS, |
890d8d23 JK |
821 | }; |
822 | ||
823 | struct tc_gred_vq_qopt_offload_params { | |
824 | bool present; | |
825 | u32 limit; | |
826 | u32 prio; | |
827 | u32 min; | |
828 | u32 max; | |
829 | bool is_ecn; | |
830 | bool is_harddrop; | |
831 | u32 probability; | |
832 | /* Only need backlog, see struct tc_prio_qopt_offload_params */ | |
833 | u32 *backlog; | |
834 | }; | |
835 | ||
836 | struct tc_gred_qopt_offload_params { | |
837 | bool grio_on; | |
838 | bool wred_on; | |
839 | unsigned int dp_cnt; | |
840 | unsigned int dp_def; | |
841 | struct gnet_stats_queue *qstats; | |
842 | struct tc_gred_vq_qopt_offload_params tab[MAX_DPs]; | |
843 | }; | |
844 | ||
e49efd52 JK |
845 | struct tc_gred_qopt_offload_stats { |
846 | struct gnet_stats_basic_packed bstats[MAX_DPs]; | |
847 | struct gnet_stats_queue qstats[MAX_DPs]; | |
848 | struct red_stats *xstats[MAX_DPs]; | |
849 | }; | |
850 | ||
890d8d23 JK |
851 | struct tc_gred_qopt_offload { |
852 | enum tc_gred_command command; | |
853 | u32 handle; | |
854 | u32 parent; | |
855 | union { | |
856 | struct tc_gred_qopt_offload_params set; | |
e49efd52 | 857 | struct tc_gred_qopt_offload_stats stats; |
890d8d23 JK |
858 | }; |
859 | }; | |
860 | ||
7fdb61b4 NF |
861 | enum tc_prio_command { |
862 | TC_PRIO_REPLACE, | |
863 | TC_PRIO_DESTROY, | |
864 | TC_PRIO_STATS, | |
b9c7a7ac | 865 | TC_PRIO_GRAFT, |
7fdb61b4 NF |
866 | }; |
867 | ||
868 | struct tc_prio_qopt_offload_params { | |
869 | int bands; | |
870 | u8 priomap[TC_PRIO_MAX + 1]; | |
9586a992 PM |
871 | /* At the point of un-offloading the Qdisc, the reported backlog and |
872 | * qlen need to be reduced by the portion that is in HW. | |
7fdb61b4 NF |
873 | */ |
874 | struct gnet_stats_queue *qstats; | |
875 | }; | |
876 | ||
b9c7a7ac NF |
877 | struct tc_prio_qopt_offload_graft_params { |
878 | u8 band; | |
879 | u32 child_handle; | |
880 | }; | |
881 | ||
7fdb61b4 NF |
882 | struct tc_prio_qopt_offload { |
883 | enum tc_prio_command command; | |
884 | u32 handle; | |
885 | u32 parent; | |
886 | union { | |
887 | struct tc_prio_qopt_offload_params replace_params; | |
888 | struct tc_qopt_offload_stats stats; | |
b9c7a7ac | 889 | struct tc_prio_qopt_offload_graft_params graft_params; |
7fdb61b4 NF |
890 | }; |
891 | }; | |
b9c7a7ac | 892 | |
98b0e5f6 JK |
893 | enum tc_root_command { |
894 | TC_ROOT_GRAFT, | |
895 | }; | |
896 | ||
897 | struct tc_root_qopt_offload { | |
898 | enum tc_root_command command; | |
899 | u32 handle; | |
900 | bool ingress; | |
901 | }; | |
902 | ||
d35eb52b PM |
903 | enum tc_ets_command { |
904 | TC_ETS_REPLACE, | |
905 | TC_ETS_DESTROY, | |
906 | TC_ETS_STATS, | |
907 | TC_ETS_GRAFT, | |
908 | }; | |
909 | ||
910 | struct tc_ets_qopt_offload_replace_params { | |
911 | unsigned int bands; | |
912 | u8 priomap[TC_PRIO_MAX + 1]; | |
913 | unsigned int quanta[TCQ_ETS_MAX_BANDS]; /* 0 for strict bands. */ | |
914 | unsigned int weights[TCQ_ETS_MAX_BANDS]; | |
915 | struct gnet_stats_queue *qstats; | |
916 | }; | |
917 | ||
918 | struct tc_ets_qopt_offload_graft_params { | |
919 | u8 band; | |
920 | u32 child_handle; | |
921 | }; | |
922 | ||
923 | struct tc_ets_qopt_offload { | |
924 | enum tc_ets_command command; | |
925 | u32 handle; | |
926 | u32 parent; | |
927 | union { | |
928 | struct tc_ets_qopt_offload_replace_params replace_params; | |
929 | struct tc_qopt_offload_stats stats; | |
930 | struct tc_ets_qopt_offload_graft_params graft_params; | |
931 | }; | |
932 | }; | |
933 | ||
ef6aadcc PM |
934 | enum tc_tbf_command { |
935 | TC_TBF_REPLACE, | |
936 | TC_TBF_DESTROY, | |
937 | TC_TBF_STATS, | |
938 | }; | |
939 | ||
940 | struct tc_tbf_qopt_offload_replace_params { | |
941 | struct psched_ratecfg rate; | |
942 | u32 max_size; | |
943 | struct gnet_stats_queue *qstats; | |
944 | }; | |
945 | ||
946 | struct tc_tbf_qopt_offload { | |
947 | enum tc_tbf_command command; | |
948 | u32 handle; | |
949 | u32 parent; | |
950 | union { | |
951 | struct tc_tbf_qopt_offload_replace_params replace_params; | |
952 | struct tc_qopt_offload_stats stats; | |
953 | }; | |
954 | }; | |
955 | ||
aaca9408 PM |
956 | enum tc_fifo_command { |
957 | TC_FIFO_REPLACE, | |
958 | TC_FIFO_DESTROY, | |
959 | TC_FIFO_STATS, | |
960 | }; | |
961 | ||
962 | struct tc_fifo_qopt_offload { | |
963 | enum tc_fifo_command command; | |
964 | u32 handle; | |
965 | u32 parent; | |
966 | union { | |
967 | struct tc_qopt_offload_stats stats; | |
968 | }; | |
969 | }; | |
970 | ||
1da177e4 | 971 | #endif |