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 | ||
87d83093 JP |
73 | int tcf_classify(struct sk_buff *skb, const struct tcf_proto *tp, |
74 | struct tcf_result *res, bool compat_mode); | |
7d17c544 PB |
75 | int tcf_classify_ingress(struct sk_buff *skb, |
76 | const struct tcf_block *ingress_block, | |
77 | const struct tcf_proto *tp, struct tcf_result *res, | |
78 | bool compat_mode); | |
87d83093 | 79 | |
8ae70032 | 80 | #else |
88c44a52 PJV |
81 | static inline bool tcf_block_shared(struct tcf_block *block) |
82 | { | |
83 | return false; | |
84 | } | |
85 | ||
c1a970d0 VB |
86 | static inline bool tcf_block_non_null_shared(struct tcf_block *block) |
87 | { | |
88 | return false; | |
89 | } | |
90 | ||
6529eaba JP |
91 | static inline |
92 | int tcf_block_get(struct tcf_block **p_block, | |
3c149091 SM |
93 | struct tcf_proto __rcu **p_filter_chain, struct Qdisc *q, |
94 | struct netlink_ext_ack *extack) | |
6529eaba JP |
95 | { |
96 | return 0; | |
97 | } | |
98 | ||
8c4083b3 | 99 | static inline |
c7eb7d72 | 100 | int tcf_block_get_ext(struct tcf_block **p_block, struct Qdisc *q, |
33c30a8b QM |
101 | struct tcf_block_ext_info *ei, |
102 | struct netlink_ext_ack *extack) | |
8c4083b3 JP |
103 | { |
104 | return 0; | |
105 | } | |
106 | ||
6529eaba | 107 | static inline void tcf_block_put(struct tcf_block *block) |
8ae70032 JP |
108 | { |
109 | } | |
87d83093 | 110 | |
8c4083b3 | 111 | static inline |
c7eb7d72 | 112 | void tcf_block_put_ext(struct tcf_block *block, struct Qdisc *q, |
8c4083b3 JP |
113 | struct tcf_block_ext_info *ei) |
114 | { | |
115 | } | |
116 | ||
44186460 JP |
117 | static inline struct Qdisc *tcf_block_q(struct tcf_block *block) |
118 | { | |
119 | return NULL; | |
120 | } | |
121 | ||
acb67442 | 122 | static inline |
a7323311 | 123 | int tc_setup_cb_block_register(struct tcf_block *block, flow_setup_cb_t *cb, |
acb67442 JP |
124 | void *cb_priv) |
125 | { | |
126 | return 0; | |
127 | } | |
128 | ||
129 | static inline | |
a7323311 | 130 | void tc_setup_cb_block_unregister(struct tcf_block *block, flow_setup_cb_t *cb, |
acb67442 JP |
131 | void *cb_priv) |
132 | { | |
133 | } | |
134 | ||
87d83093 JP |
135 | static inline int tcf_classify(struct sk_buff *skb, const struct tcf_proto *tp, |
136 | struct tcf_result *res, bool compat_mode) | |
137 | { | |
138 | return TC_ACT_UNSPEC; | |
139 | } | |
9410c940 PB |
140 | |
141 | static inline int tcf_classify_ingress(struct sk_buff *skb, | |
7d17c544 | 142 | const struct tcf_block *ingress_block, |
9410c940 PB |
143 | const struct tcf_proto *tp, |
144 | struct tcf_result *res, bool compat_mode) | |
145 | { | |
146 | return TC_ACT_UNSPEC; | |
147 | } | |
148 | ||
8ae70032 | 149 | #endif |
cf1facda | 150 | |
1da177e4 LT |
151 | static inline unsigned long |
152 | __cls_set_class(unsigned long *clp, unsigned long cl) | |
153 | { | |
a0efb80c | 154 | return xchg(clp, cl); |
1da177e4 LT |
155 | } |
156 | ||
2e24cd75 CW |
157 | static inline void |
158 | __tcf_bind_filter(struct Qdisc *q, struct tcf_result *r, unsigned long base) | |
1da177e4 | 159 | { |
2e24cd75 | 160 | unsigned long cl; |
34e3759c | 161 | |
2e24cd75 CW |
162 | cl = q->ops->cl_ops->bind_tcf(q, base, r->classid); |
163 | cl = __cls_set_class(&r->class, cl); | |
164 | if (cl) | |
165 | q->ops->cl_ops->unbind_tcf(q, cl); | |
1da177e4 LT |
166 | } |
167 | ||
168 | static inline void | |
169 | tcf_bind_filter(struct tcf_proto *tp, struct tcf_result *r, unsigned long base) | |
170 | { | |
34e3759c | 171 | struct Qdisc *q = tp->chain->block->q; |
1da177e4 | 172 | |
34e3759c JP |
173 | /* Check q as it is not set for shared blocks. In that case, |
174 | * setting class is not supported. | |
175 | */ | |
176 | if (!q) | |
177 | return; | |
2e24cd75 CW |
178 | sch_tree_lock(q); |
179 | __tcf_bind_filter(q, r, base); | |
180 | sch_tree_unlock(q); | |
181 | } | |
182 | ||
183 | static inline void | |
184 | __tcf_unbind_filter(struct Qdisc *q, struct tcf_result *r) | |
185 | { | |
186 | unsigned long cl; | |
187 | ||
188 | if ((cl = __cls_set_class(&r->class, 0)) != 0) | |
34e3759c | 189 | q->ops->cl_ops->unbind_tcf(q, cl); |
1da177e4 LT |
190 | } |
191 | ||
192 | static inline void | |
193 | tcf_unbind_filter(struct tcf_proto *tp, struct tcf_result *r) | |
194 | { | |
34e3759c | 195 | struct Qdisc *q = tp->chain->block->q; |
1da177e4 | 196 | |
34e3759c JP |
197 | if (!q) |
198 | return; | |
2e24cd75 | 199 | __tcf_unbind_filter(q, r); |
1da177e4 LT |
200 | } |
201 | ||
fd2c3ef7 | 202 | struct tcf_exts { |
1da177e4 | 203 | #ifdef CONFIG_NET_CLS_ACT |
33be6271 | 204 | __u32 type; /* for backward compat(TCA_OLD_COMPAT) */ |
22dc13c8 WC |
205 | int nr_actions; |
206 | struct tc_action **actions; | |
e4b95c41 | 207 | struct net *net; |
1da177e4 | 208 | #endif |
5da57f42 WC |
209 | /* Map to export classifier specific extension TLV types to the |
210 | * generic extensions API. Unsupported extensions must be set to 0. | |
211 | */ | |
1da177e4 LT |
212 | int action; |
213 | int police; | |
214 | }; | |
215 | ||
14215108 CW |
216 | static inline int tcf_exts_init(struct tcf_exts *exts, struct net *net, |
217 | int action, int police) | |
33be6271 WC |
218 | { |
219 | #ifdef CONFIG_NET_CLS_ACT | |
5da57f42 | 220 | exts->type = 0; |
22dc13c8 | 221 | exts->nr_actions = 0; |
14215108 | 222 | exts->net = net; |
22dc13c8 WC |
223 | exts->actions = kcalloc(TCA_ACT_MAX_PRIO, sizeof(struct tc_action *), |
224 | GFP_KERNEL); | |
b9a24bb7 WC |
225 | if (!exts->actions) |
226 | return -ENOMEM; | |
33be6271 | 227 | #endif |
5da57f42 WC |
228 | exts->action = action; |
229 | exts->police = police; | |
b9a24bb7 | 230 | return 0; |
33be6271 WC |
231 | } |
232 | ||
e4b95c41 CW |
233 | /* Return false if the netns is being destroyed in cleanup_net(). Callers |
234 | * need to do cleanup synchronously in this case, otherwise may race with | |
235 | * tc_action_net_exit(). Return true for other cases. | |
236 | */ | |
237 | static inline bool tcf_exts_get_net(struct tcf_exts *exts) | |
238 | { | |
239 | #ifdef CONFIG_NET_CLS_ACT | |
240 | exts->net = maybe_get_net(exts->net); | |
241 | return exts->net != NULL; | |
242 | #else | |
243 | return true; | |
244 | #endif | |
245 | } | |
246 | ||
247 | static inline void tcf_exts_put_net(struct tcf_exts *exts) | |
248 | { | |
249 | #ifdef CONFIG_NET_CLS_ACT | |
250 | if (exts->net) | |
251 | put_net(exts->net); | |
252 | #endif | |
253 | } | |
254 | ||
22dc13c8 | 255 | #ifdef CONFIG_NET_CLS_ACT |
244cd96a CW |
256 | #define tcf_exts_for_each_action(i, a, exts) \ |
257 | for (i = 0; i < TCA_ACT_MAX_PRIO && ((a) = (exts)->actions[i]); i++) | |
258 | #else | |
259 | #define tcf_exts_for_each_action(i, a, exts) \ | |
191672ca | 260 | for (; 0; (void)(i), (void)(a), (void)(exts)) |
22dc13c8 | 261 | #endif |
22dc13c8 | 262 | |
d897a638 JK |
263 | static inline void |
264 | tcf_exts_stats_update(const struct tcf_exts *exts, | |
4b61d3e8 | 265 | u64 bytes, u64 packets, u64 drops, u64 lastuse, |
93a129eb | 266 | u8 used_hw_stats, bool used_hw_stats_valid) |
d897a638 JK |
267 | { |
268 | #ifdef CONFIG_NET_CLS_ACT | |
269 | int i; | |
270 | ||
271 | preempt_disable(); | |
272 | ||
273 | for (i = 0; i < exts->nr_actions; i++) { | |
274 | struct tc_action *a = exts->actions[i]; | |
275 | ||
4b61d3e8 PL |
276 | tcf_action_stats_update(a, bytes, packets, drops, |
277 | lastuse, true); | |
93a129eb JP |
278 | a->used_hw_stats = used_hw_stats; |
279 | a->used_hw_stats_valid = used_hw_stats_valid; | |
d897a638 JK |
280 | } |
281 | ||
282 | preempt_enable(); | |
283 | #endif | |
284 | } | |
285 | ||
3bcc0cec JP |
286 | /** |
287 | * tcf_exts_has_actions - check if at least one action is present | |
288 | * @exts: tc filter extensions handle | |
289 | * | |
290 | * Returns true if at least one action is present. | |
291 | */ | |
292 | static inline bool tcf_exts_has_actions(struct tcf_exts *exts) | |
293 | { | |
2734437e | 294 | #ifdef CONFIG_NET_CLS_ACT |
3bcc0cec JP |
295 | return exts->nr_actions; |
296 | #else | |
297 | return false; | |
298 | #endif | |
299 | } | |
2734437e | 300 | |
af69afc5 JP |
301 | /** |
302 | * tcf_exts_exec - execute tc filter extensions | |
303 | * @skb: socket buffer | |
304 | * @exts: tc filter extensions handle | |
305 | * @res: desired result | |
306 | * | |
af089e70 | 307 | * Executes all configured extensions. Returns TC_ACT_OK on a normal execution, |
af69afc5 JP |
308 | * a negative number if the filter must be considered unmatched or |
309 | * a positive action code (TC_ACT_*) which must be returned to the | |
310 | * underlying layer. | |
311 | */ | |
312 | static inline int | |
313 | tcf_exts_exec(struct sk_buff *skb, struct tcf_exts *exts, | |
314 | struct tcf_result *res) | |
315 | { | |
316 | #ifdef CONFIG_NET_CLS_ACT | |
ec1a9cca | 317 | return tcf_action_exec(skb, exts->actions, exts->nr_actions, res); |
af69afc5 | 318 | #endif |
af089e70 | 319 | return TC_ACT_OK; |
af69afc5 JP |
320 | } |
321 | ||
5c15257f JP |
322 | int tcf_exts_validate(struct net *net, struct tcf_proto *tp, |
323 | struct nlattr **tb, struct nlattr *rate_tlv, | |
ec6743a1 | 324 | struct tcf_exts *exts, bool ovr, bool rtnl_held, |
50a56190 | 325 | struct netlink_ext_ack *extack); |
18d0264f | 326 | void tcf_exts_destroy(struct tcf_exts *exts); |
9b0d4446 | 327 | void tcf_exts_change(struct tcf_exts *dst, struct tcf_exts *src); |
5da57f42 | 328 | int tcf_exts_dump(struct sk_buff *skb, struct tcf_exts *exts); |
ca44b738 | 329 | int tcf_exts_terse_dump(struct sk_buff *skb, struct tcf_exts *exts); |
5da57f42 | 330 | int tcf_exts_dump_stats(struct sk_buff *skb, struct tcf_exts *exts); |
1da177e4 LT |
331 | |
332 | /** | |
333 | * struct tcf_pkt_info - packet information | |
334 | */ | |
fd2c3ef7 | 335 | struct tcf_pkt_info { |
1da177e4 LT |
336 | unsigned char * ptr; |
337 | int nexthdr; | |
338 | }; | |
339 | ||
340 | #ifdef CONFIG_NET_EMATCH | |
341 | ||
342 | struct tcf_ematch_ops; | |
343 | ||
344 | /** | |
345 | * struct tcf_ematch - extended match (ematch) | |
346 | * | |
347 | * @matchid: identifier to allow userspace to reidentify a match | |
348 | * @flags: flags specifying attributes and the relation to other matches | |
349 | * @ops: the operations lookup table of the corresponding ematch module | |
350 | * @datalen: length of the ematch specific configuration data | |
351 | * @data: ematch specific data | |
352 | */ | |
fd2c3ef7 | 353 | struct tcf_ematch { |
1da177e4 LT |
354 | struct tcf_ematch_ops * ops; |
355 | unsigned long data; | |
356 | unsigned int datalen; | |
357 | u16 matchid; | |
358 | u16 flags; | |
82a470f1 | 359 | struct net *net; |
1da177e4 LT |
360 | }; |
361 | ||
362 | static inline int tcf_em_is_container(struct tcf_ematch *em) | |
363 | { | |
364 | return !em->ops; | |
365 | } | |
366 | ||
367 | static inline int tcf_em_is_simple(struct tcf_ematch *em) | |
368 | { | |
369 | return em->flags & TCF_EM_SIMPLE; | |
370 | } | |
371 | ||
372 | static inline int tcf_em_is_inverted(struct tcf_ematch *em) | |
373 | { | |
374 | return em->flags & TCF_EM_INVERT; | |
375 | } | |
376 | ||
377 | static inline int tcf_em_last_match(struct tcf_ematch *em) | |
378 | { | |
379 | return (em->flags & TCF_EM_REL_MASK) == TCF_EM_REL_END; | |
380 | } | |
381 | ||
382 | static inline int tcf_em_early_end(struct tcf_ematch *em, int result) | |
383 | { | |
384 | if (tcf_em_last_match(em)) | |
385 | return 1; | |
386 | ||
387 | if (result == 0 && em->flags & TCF_EM_REL_AND) | |
388 | return 1; | |
389 | ||
390 | if (result != 0 && em->flags & TCF_EM_REL_OR) | |
391 | return 1; | |
392 | ||
393 | return 0; | |
394 | } | |
395 | ||
396 | /** | |
397 | * struct tcf_ematch_tree - ematch tree handle | |
398 | * | |
399 | * @hdr: ematch tree header supplied by userspace | |
400 | * @matches: array of ematches | |
401 | */ | |
fd2c3ef7 | 402 | struct tcf_ematch_tree { |
1da177e4 LT |
403 | struct tcf_ematch_tree_hdr hdr; |
404 | struct tcf_ematch * matches; | |
405 | ||
406 | }; | |
407 | ||
408 | /** | |
409 | * struct tcf_ematch_ops - ematch module operations | |
410 | * | |
411 | * @kind: identifier (kind) of this ematch module | |
412 | * @datalen: length of expected configuration data (optional) | |
413 | * @change: called during validation (optional) | |
414 | * @match: called during ematch tree evaluation, must return 1/0 | |
415 | * @destroy: called during destroyage (optional) | |
416 | * @dump: called during dumping process (optional) | |
417 | * @owner: owner, must be set to THIS_MODULE | |
418 | * @link: link to previous/next ematch module (internal use) | |
419 | */ | |
fd2c3ef7 | 420 | struct tcf_ematch_ops { |
1da177e4 LT |
421 | int kind; |
422 | int datalen; | |
82a470f1 | 423 | int (*change)(struct net *net, void *, |
1da177e4 LT |
424 | int, struct tcf_ematch *); |
425 | int (*match)(struct sk_buff *, struct tcf_ematch *, | |
426 | struct tcf_pkt_info *); | |
82a470f1 | 427 | void (*destroy)(struct tcf_ematch *); |
1da177e4 LT |
428 | int (*dump)(struct sk_buff *, struct tcf_ematch *); |
429 | struct module *owner; | |
430 | struct list_head link; | |
431 | }; | |
432 | ||
5c15257f JP |
433 | int tcf_em_register(struct tcf_ematch_ops *); |
434 | void tcf_em_unregister(struct tcf_ematch_ops *); | |
435 | int tcf_em_tree_validate(struct tcf_proto *, struct nlattr *, | |
436 | struct tcf_ematch_tree *); | |
82a470f1 | 437 | void tcf_em_tree_destroy(struct tcf_ematch_tree *); |
5c15257f JP |
438 | int tcf_em_tree_dump(struct sk_buff *, struct tcf_ematch_tree *, int); |
439 | int __tcf_em_tree_match(struct sk_buff *, struct tcf_ematch_tree *, | |
440 | struct tcf_pkt_info *); | |
1da177e4 | 441 | |
1da177e4 LT |
442 | /** |
443 | * tcf_em_tree_match - evaulate an ematch tree | |
444 | * | |
445 | * @skb: socket buffer of the packet in question | |
446 | * @tree: ematch tree to be used for evaluation | |
447 | * @info: packet information examined by classifier | |
448 | * | |
449 | * This function matches @skb against the ematch tree in @tree by going | |
450 | * through all ematches respecting their logic relations returning | |
451 | * as soon as the result is obvious. | |
452 | * | |
453 | * Returns 1 if the ematch tree as-one matches, no ematches are configured | |
454 | * or ematch is not enabled in the kernel, otherwise 0 is returned. | |
455 | */ | |
456 | static inline int tcf_em_tree_match(struct sk_buff *skb, | |
457 | struct tcf_ematch_tree *tree, | |
458 | struct tcf_pkt_info *info) | |
459 | { | |
460 | if (tree->hdr.nmatches) | |
461 | return __tcf_em_tree_match(skb, tree, info); | |
462 | else | |
463 | return 1; | |
464 | } | |
465 | ||
db3d99c0 PM |
466 | #define MODULE_ALIAS_TCF_EMATCH(kind) MODULE_ALIAS("ematch-kind-" __stringify(kind)) |
467 | ||
1da177e4 LT |
468 | #else /* CONFIG_NET_EMATCH */ |
469 | ||
fd2c3ef7 | 470 | struct tcf_ematch_tree { |
1da177e4 LT |
471 | }; |
472 | ||
473 | #define tcf_em_tree_validate(tp, tb, t) ((void)(t), 0) | |
82a470f1 | 474 | #define tcf_em_tree_destroy(t) do { (void)(t); } while(0) |
1da177e4 | 475 | #define tcf_em_tree_dump(skb, t, tlv) (0) |
1da177e4 LT |
476 | #define tcf_em_tree_match(skb, t, info) ((void)(info), 1) |
477 | ||
478 | #endif /* CONFIG_NET_EMATCH */ | |
479 | ||
480 | static inline unsigned char * tcf_get_base_ptr(struct sk_buff *skb, int layer) | |
481 | { | |
482 | switch (layer) { | |
483 | case TCF_LAYER_LINK: | |
d3303a65 | 484 | return skb_mac_header(skb); |
1da177e4 | 485 | case TCF_LAYER_NETWORK: |
d56f90a7 | 486 | return skb_network_header(skb); |
1da177e4 | 487 | case TCF_LAYER_TRANSPORT: |
9c70220b | 488 | return skb_transport_header(skb); |
1da177e4 LT |
489 | } |
490 | ||
491 | return NULL; | |
492 | } | |
493 | ||
eddc9ec5 ACM |
494 | static inline int tcf_valid_offset(const struct sk_buff *skb, |
495 | const unsigned char *ptr, const int len) | |
1da177e4 | 496 | { |
da521b2c DM |
497 | return likely((ptr + len) <= skb_tail_pointer(skb) && |
498 | ptr >= skb->head && | |
499 | (ptr <= (ptr + len))); | |
1da177e4 LT |
500 | } |
501 | ||
1da177e4 | 502 | static inline int |
1057c55f AA |
503 | tcf_change_indev(struct net *net, struct nlattr *indev_tlv, |
504 | struct netlink_ext_ack *extack) | |
1da177e4 | 505 | { |
2519a602 WC |
506 | char indev[IFNAMSIZ]; |
507 | struct net_device *dev; | |
508 | ||
1057c55f | 509 | if (nla_strlcpy(indev, indev_tlv, IFNAMSIZ) >= IFNAMSIZ) { |
e4a58ef3 GN |
510 | NL_SET_ERR_MSG_ATTR(extack, indev_tlv, |
511 | "Interface name too long"); | |
1da177e4 | 512 | return -EINVAL; |
1057c55f | 513 | } |
2519a602 | 514 | dev = __dev_get_by_name(net, indev); |
e4a58ef3 GN |
515 | if (!dev) { |
516 | NL_SET_ERR_MSG_ATTR(extack, indev_tlv, | |
517 | "Network device not found"); | |
2519a602 | 518 | return -ENODEV; |
e4a58ef3 | 519 | } |
2519a602 | 520 | return dev->ifindex; |
1da177e4 LT |
521 | } |
522 | ||
2519a602 WC |
523 | static inline bool |
524 | tcf_match_indev(struct sk_buff *skb, int ifindex) | |
1da177e4 | 525 | { |
2519a602 WC |
526 | if (!ifindex) |
527 | return true; | |
528 | if (!skb->skb_iif) | |
529 | return false; | |
530 | return ifindex == skb->skb_iif; | |
1da177e4 | 531 | } |
1da177e4 | 532 | |
3a7b6861 | 533 | int tc_setup_flow_action(struct flow_action *flow_action, |
b15e7a6e | 534 | const struct tcf_exts *exts); |
5a6ff4b1 VB |
535 | void tc_cleanup_flow_action(struct flow_action *flow_action); |
536 | ||
aeb3fecd | 537 | int tc_setup_cb_call(struct tcf_block *block, enum tc_setup_type type, |
40119211 VB |
538 | void *type_data, bool err_stop, bool rtnl_held); |
539 | int tc_setup_cb_add(struct tcf_block *block, struct tcf_proto *tp, | |
540 | enum tc_setup_type type, void *type_data, bool err_stop, | |
541 | u32 *flags, unsigned int *in_hw_count, bool rtnl_held); | |
542 | int tc_setup_cb_replace(struct tcf_block *block, struct tcf_proto *tp, | |
543 | enum tc_setup_type type, void *type_data, bool err_stop, | |
544 | u32 *old_flags, unsigned int *old_in_hw_count, | |
545 | u32 *new_flags, unsigned int *new_in_hw_count, | |
546 | bool rtnl_held); | |
547 | int tc_setup_cb_destroy(struct tcf_block *block, struct tcf_proto *tp, | |
548 | enum tc_setup_type type, void *type_data, bool err_stop, | |
549 | u32 *flags, unsigned int *in_hw_count, bool rtnl_held); | |
550 | int tc_setup_cb_reoffload(struct tcf_block *block, struct tcf_proto *tp, | |
551 | bool add, flow_setup_cb_t *cb, | |
552 | enum tc_setup_type type, void *type_data, | |
553 | void *cb_priv, u32 *flags, unsigned int *in_hw_count); | |
e3ab786b | 554 | unsigned int tcf_exts_num_actions(struct tcf_exts *exts); |
717503b9 | 555 | |
a1b7c5fd JF |
556 | struct tc_cls_u32_knode { |
557 | struct tcf_exts *exts; | |
068ceb35 | 558 | struct tcf_result *res; |
e014860e | 559 | struct tc_u32_sel *sel; |
a1b7c5fd JF |
560 | u32 handle; |
561 | u32 val; | |
562 | u32 mask; | |
563 | u32 link_handle; | |
e014860e | 564 | u8 fshift; |
a1b7c5fd JF |
565 | }; |
566 | ||
567 | struct tc_cls_u32_hnode { | |
568 | u32 handle; | |
569 | u32 prio; | |
570 | unsigned int divisor; | |
571 | }; | |
572 | ||
573 | enum tc_clsu32_command { | |
574 | TC_CLSU32_NEW_KNODE, | |
575 | TC_CLSU32_REPLACE_KNODE, | |
576 | TC_CLSU32_DELETE_KNODE, | |
577 | TC_CLSU32_NEW_HNODE, | |
578 | TC_CLSU32_REPLACE_HNODE, | |
579 | TC_CLSU32_DELETE_HNODE, | |
580 | }; | |
581 | ||
582 | struct tc_cls_u32_offload { | |
f9e30088 | 583 | struct flow_cls_common_offload common; |
a1b7c5fd JF |
584 | /* knode values */ |
585 | enum tc_clsu32_command command; | |
586 | union { | |
587 | struct tc_cls_u32_knode knode; | |
588 | struct tc_cls_u32_hnode hnode; | |
589 | }; | |
590 | }; | |
591 | ||
7b06e8ae | 592 | static inline bool tc_can_offload(const struct net_device *dev) |
6843e7a2 | 593 | { |
70b5aee4 | 594 | return dev->features & NETIF_F_HW_TC; |
6843e7a2 JF |
595 | } |
596 | ||
f9eda14f QM |
597 | static inline bool tc_can_offload_extack(const struct net_device *dev, |
598 | struct netlink_ext_ack *extack) | |
599 | { | |
600 | bool can = tc_can_offload(dev); | |
601 | ||
602 | if (!can) | |
603 | NL_SET_ERR_MSG(extack, "TC offload is disabled on net device"); | |
604 | ||
605 | return can; | |
606 | } | |
607 | ||
878db9f0 JK |
608 | static inline bool |
609 | tc_cls_can_offload_and_chain0(const struct net_device *dev, | |
f9e30088 | 610 | struct flow_cls_common_offload *common) |
878db9f0 JK |
611 | { |
612 | if (!tc_can_offload_extack(dev, common->extack)) | |
613 | return false; | |
614 | if (common->chain_index) { | |
615 | NL_SET_ERR_MSG(common->extack, | |
616 | "Driver supports only offload of chain 0"); | |
617 | return false; | |
618 | } | |
619 | return true; | |
620 | } | |
621 | ||
55330f05 HHZ |
622 | static inline bool tc_skip_hw(u32 flags) |
623 | { | |
624 | return (flags & TCA_CLS_FLAGS_SKIP_HW) ? true : false; | |
625 | } | |
626 | ||
d34e3e18 SS |
627 | static inline bool tc_skip_sw(u32 flags) |
628 | { | |
629 | return (flags & TCA_CLS_FLAGS_SKIP_SW) ? true : false; | |
630 | } | |
631 | ||
632 | /* SKIP_HW and SKIP_SW are mutually exclusive flags. */ | |
633 | static inline bool tc_flags_valid(u32 flags) | |
634 | { | |
81c7288b MRL |
635 | if (flags & ~(TCA_CLS_FLAGS_SKIP_HW | TCA_CLS_FLAGS_SKIP_SW | |
636 | TCA_CLS_FLAGS_VERBOSE)) | |
d34e3e18 SS |
637 | return false; |
638 | ||
81c7288b | 639 | flags &= TCA_CLS_FLAGS_SKIP_HW | TCA_CLS_FLAGS_SKIP_SW; |
d34e3e18 SS |
640 | if (!(flags ^ (TCA_CLS_FLAGS_SKIP_HW | TCA_CLS_FLAGS_SKIP_SW))) |
641 | return false; | |
642 | ||
643 | return true; | |
644 | } | |
645 | ||
e696028a OG |
646 | static inline bool tc_in_hw(u32 flags) |
647 | { | |
648 | return (flags & TCA_CLS_FLAGS_IN_HW) ? true : false; | |
649 | } | |
650 | ||
34832e1c | 651 | static inline void |
f9e30088 | 652 | tc_cls_common_offload_init(struct flow_cls_common_offload *cls_common, |
34832e1c JK |
653 | const struct tcf_proto *tp, u32 flags, |
654 | struct netlink_ext_ack *extack) | |
655 | { | |
656 | cls_common->chain_index = tp->chain->index; | |
657 | cls_common->protocol = tp->protocol; | |
ef01adae | 658 | cls_common->prio = tp->prio >> 16; |
81c7288b | 659 | if (tc_skip_sw(flags) || flags & TCA_CLS_FLAGS_VERBOSE) |
34832e1c JK |
660 | cls_common->extack = extack; |
661 | } | |
662 | ||
b87f7936 YG |
663 | enum tc_matchall_command { |
664 | TC_CLSMATCHALL_REPLACE, | |
665 | TC_CLSMATCHALL_DESTROY, | |
b7fe4ab8 | 666 | TC_CLSMATCHALL_STATS, |
b87f7936 YG |
667 | }; |
668 | ||
669 | struct tc_cls_matchall_offload { | |
f9e30088 | 670 | struct flow_cls_common_offload common; |
b87f7936 | 671 | enum tc_matchall_command command; |
f00cbf19 | 672 | struct flow_rule *rule; |
b7fe4ab8 | 673 | struct flow_stats stats; |
b87f7936 YG |
674 | unsigned long cookie; |
675 | }; | |
676 | ||
332ae8e2 | 677 | enum tc_clsbpf_command { |
102740bd | 678 | TC_CLSBPF_OFFLOAD, |
68d64063 | 679 | TC_CLSBPF_STATS, |
332ae8e2 JK |
680 | }; |
681 | ||
682 | struct tc_cls_bpf_offload { | |
f9e30088 | 683 | struct flow_cls_common_offload common; |
332ae8e2 JK |
684 | enum tc_clsbpf_command command; |
685 | struct tcf_exts *exts; | |
686 | struct bpf_prog *prog; | |
102740bd | 687 | struct bpf_prog *oldprog; |
332ae8e2 JK |
688 | const char *name; |
689 | bool exts_integrated; | |
690 | }; | |
691 | ||
4e8b86c0 AN |
692 | struct tc_mqprio_qopt_offload { |
693 | /* struct tc_mqprio_qopt must always be the first element */ | |
694 | struct tc_mqprio_qopt qopt; | |
695 | u16 mode; | |
696 | u16 shaper; | |
697 | u32 flags; | |
698 | u64 min_rate[TC_QOPT_MAX_QUEUE]; | |
699 | u64 max_rate[TC_QOPT_MAX_QUEUE]; | |
700 | }; | |
1045ba77 JHS |
701 | |
702 | /* This structure holds cookie structure that is passed from user | |
703 | * to the kernel for actions and classifiers | |
704 | */ | |
705 | struct tc_cookie { | |
706 | u8 *data; | |
707 | u32 len; | |
eec94fdb | 708 | struct rcu_head rcu; |
1045ba77 | 709 | }; |
602f3baf | 710 | |
f34b4aac NF |
711 | struct tc_qopt_offload_stats { |
712 | struct gnet_stats_basic_packed *bstats; | |
713 | struct gnet_stats_queue *qstats; | |
714 | }; | |
715 | ||
f971b132 JK |
716 | enum tc_mq_command { |
717 | TC_MQ_CREATE, | |
718 | TC_MQ_DESTROY, | |
47c669a4 | 719 | TC_MQ_STATS, |
d577a3d2 JK |
720 | TC_MQ_GRAFT, |
721 | }; | |
722 | ||
723 | struct tc_mq_opt_offload_graft_params { | |
724 | unsigned long queue; | |
725 | u32 child_handle; | |
f971b132 JK |
726 | }; |
727 | ||
728 | struct tc_mq_qopt_offload { | |
729 | enum tc_mq_command command; | |
730 | u32 handle; | |
d577a3d2 JK |
731 | union { |
732 | struct tc_qopt_offload_stats stats; | |
733 | struct tc_mq_opt_offload_graft_params graft_params; | |
734 | }; | |
f971b132 JK |
735 | }; |
736 | ||
602f3baf NF |
737 | enum tc_red_command { |
738 | TC_RED_REPLACE, | |
739 | TC_RED_DESTROY, | |
740 | TC_RED_STATS, | |
741 | TC_RED_XSTATS, | |
bf2a752b | 742 | TC_RED_GRAFT, |
602f3baf NF |
743 | }; |
744 | ||
745 | struct tc_red_qopt_offload_params { | |
746 | u32 min; | |
747 | u32 max; | |
748 | u32 probability; | |
c0b7490b | 749 | u32 limit; |
602f3baf | 750 | bool is_ecn; |
190852a5 | 751 | bool is_harddrop; |
0a7fad23 | 752 | bool is_nodrop; |
416ef9b1 | 753 | struct gnet_stats_queue *qstats; |
602f3baf | 754 | }; |
602f3baf NF |
755 | |
756 | struct tc_red_qopt_offload { | |
757 | enum tc_red_command command; | |
758 | u32 handle; | |
759 | u32 parent; | |
760 | union { | |
761 | struct tc_red_qopt_offload_params set; | |
f34b4aac | 762 | struct tc_qopt_offload_stats stats; |
602f3baf | 763 | struct red_stats *xstats; |
bf2a752b | 764 | u32 child_handle; |
602f3baf NF |
765 | }; |
766 | }; | |
767 | ||
890d8d23 JK |
768 | enum tc_gred_command { |
769 | TC_GRED_REPLACE, | |
770 | TC_GRED_DESTROY, | |
e49efd52 | 771 | TC_GRED_STATS, |
890d8d23 JK |
772 | }; |
773 | ||
774 | struct tc_gred_vq_qopt_offload_params { | |
775 | bool present; | |
776 | u32 limit; | |
777 | u32 prio; | |
778 | u32 min; | |
779 | u32 max; | |
780 | bool is_ecn; | |
781 | bool is_harddrop; | |
782 | u32 probability; | |
783 | /* Only need backlog, see struct tc_prio_qopt_offload_params */ | |
784 | u32 *backlog; | |
785 | }; | |
786 | ||
787 | struct tc_gred_qopt_offload_params { | |
788 | bool grio_on; | |
789 | bool wred_on; | |
790 | unsigned int dp_cnt; | |
791 | unsigned int dp_def; | |
792 | struct gnet_stats_queue *qstats; | |
793 | struct tc_gred_vq_qopt_offload_params tab[MAX_DPs]; | |
794 | }; | |
795 | ||
e49efd52 JK |
796 | struct tc_gred_qopt_offload_stats { |
797 | struct gnet_stats_basic_packed bstats[MAX_DPs]; | |
798 | struct gnet_stats_queue qstats[MAX_DPs]; | |
799 | struct red_stats *xstats[MAX_DPs]; | |
800 | }; | |
801 | ||
890d8d23 JK |
802 | struct tc_gred_qopt_offload { |
803 | enum tc_gred_command command; | |
804 | u32 handle; | |
805 | u32 parent; | |
806 | union { | |
807 | struct tc_gred_qopt_offload_params set; | |
e49efd52 | 808 | struct tc_gred_qopt_offload_stats stats; |
890d8d23 JK |
809 | }; |
810 | }; | |
811 | ||
7fdb61b4 NF |
812 | enum tc_prio_command { |
813 | TC_PRIO_REPLACE, | |
814 | TC_PRIO_DESTROY, | |
815 | TC_PRIO_STATS, | |
b9c7a7ac | 816 | TC_PRIO_GRAFT, |
7fdb61b4 NF |
817 | }; |
818 | ||
819 | struct tc_prio_qopt_offload_params { | |
820 | int bands; | |
821 | u8 priomap[TC_PRIO_MAX + 1]; | |
9586a992 PM |
822 | /* At the point of un-offloading the Qdisc, the reported backlog and |
823 | * qlen need to be reduced by the portion that is in HW. | |
7fdb61b4 NF |
824 | */ |
825 | struct gnet_stats_queue *qstats; | |
826 | }; | |
827 | ||
b9c7a7ac NF |
828 | struct tc_prio_qopt_offload_graft_params { |
829 | u8 band; | |
830 | u32 child_handle; | |
831 | }; | |
832 | ||
7fdb61b4 NF |
833 | struct tc_prio_qopt_offload { |
834 | enum tc_prio_command command; | |
835 | u32 handle; | |
836 | u32 parent; | |
837 | union { | |
838 | struct tc_prio_qopt_offload_params replace_params; | |
839 | struct tc_qopt_offload_stats stats; | |
b9c7a7ac | 840 | struct tc_prio_qopt_offload_graft_params graft_params; |
7fdb61b4 NF |
841 | }; |
842 | }; | |
b9c7a7ac | 843 | |
98b0e5f6 JK |
844 | enum tc_root_command { |
845 | TC_ROOT_GRAFT, | |
846 | }; | |
847 | ||
848 | struct tc_root_qopt_offload { | |
849 | enum tc_root_command command; | |
850 | u32 handle; | |
851 | bool ingress; | |
852 | }; | |
853 | ||
d35eb52b PM |
854 | enum tc_ets_command { |
855 | TC_ETS_REPLACE, | |
856 | TC_ETS_DESTROY, | |
857 | TC_ETS_STATS, | |
858 | TC_ETS_GRAFT, | |
859 | }; | |
860 | ||
861 | struct tc_ets_qopt_offload_replace_params { | |
862 | unsigned int bands; | |
863 | u8 priomap[TC_PRIO_MAX + 1]; | |
864 | unsigned int quanta[TCQ_ETS_MAX_BANDS]; /* 0 for strict bands. */ | |
865 | unsigned int weights[TCQ_ETS_MAX_BANDS]; | |
866 | struct gnet_stats_queue *qstats; | |
867 | }; | |
868 | ||
869 | struct tc_ets_qopt_offload_graft_params { | |
870 | u8 band; | |
871 | u32 child_handle; | |
872 | }; | |
873 | ||
874 | struct tc_ets_qopt_offload { | |
875 | enum tc_ets_command command; | |
876 | u32 handle; | |
877 | u32 parent; | |
878 | union { | |
879 | struct tc_ets_qopt_offload_replace_params replace_params; | |
880 | struct tc_qopt_offload_stats stats; | |
881 | struct tc_ets_qopt_offload_graft_params graft_params; | |
882 | }; | |
883 | }; | |
884 | ||
ef6aadcc PM |
885 | enum tc_tbf_command { |
886 | TC_TBF_REPLACE, | |
887 | TC_TBF_DESTROY, | |
888 | TC_TBF_STATS, | |
889 | }; | |
890 | ||
891 | struct tc_tbf_qopt_offload_replace_params { | |
892 | struct psched_ratecfg rate; | |
893 | u32 max_size; | |
894 | struct gnet_stats_queue *qstats; | |
895 | }; | |
896 | ||
897 | struct tc_tbf_qopt_offload { | |
898 | enum tc_tbf_command command; | |
899 | u32 handle; | |
900 | u32 parent; | |
901 | union { | |
902 | struct tc_tbf_qopt_offload_replace_params replace_params; | |
903 | struct tc_qopt_offload_stats stats; | |
904 | }; | |
905 | }; | |
906 | ||
aaca9408 PM |
907 | enum tc_fifo_command { |
908 | TC_FIFO_REPLACE, | |
909 | TC_FIFO_DESTROY, | |
910 | TC_FIFO_STATS, | |
911 | }; | |
912 | ||
913 | struct tc_fifo_qopt_offload { | |
914 | enum tc_fifo_command command; | |
915 | u32 handle; | |
916 | u32 parent; | |
917 | union { | |
918 | struct tc_qopt_offload_stats stats; | |
919 | }; | |
920 | }; | |
921 | ||
1da177e4 | 922 | #endif |