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); | |
75 | ||
8ae70032 | 76 | #else |
88c44a52 PJV |
77 | static inline bool tcf_block_shared(struct tcf_block *block) |
78 | { | |
79 | return false; | |
80 | } | |
81 | ||
c1a970d0 VB |
82 | static inline bool tcf_block_non_null_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 | 118 | static inline |
a7323311 | 119 | int tc_setup_cb_block_register(struct tcf_block *block, flow_setup_cb_t *cb, |
acb67442 JP |
120 | void *cb_priv) |
121 | { | |
122 | return 0; | |
123 | } | |
124 | ||
125 | static inline | |
a7323311 | 126 | void tc_setup_cb_block_unregister(struct tcf_block *block, flow_setup_cb_t *cb, |
acb67442 JP |
127 | void *cb_priv) |
128 | { | |
129 | } | |
130 | ||
87d83093 JP |
131 | static inline int tcf_classify(struct sk_buff *skb, const struct tcf_proto *tp, |
132 | struct tcf_result *res, bool compat_mode) | |
133 | { | |
134 | return TC_ACT_UNSPEC; | |
135 | } | |
8ae70032 | 136 | #endif |
cf1facda | 137 | |
1da177e4 LT |
138 | static inline unsigned long |
139 | __cls_set_class(unsigned long *clp, unsigned long cl) | |
140 | { | |
a0efb80c | 141 | return xchg(clp, cl); |
1da177e4 LT |
142 | } |
143 | ||
144 | static inline unsigned long | |
34e3759c | 145 | cls_set_class(struct Qdisc *q, unsigned long *clp, unsigned long cl) |
1da177e4 LT |
146 | { |
147 | unsigned long old_cl; | |
34e3759c JP |
148 | |
149 | sch_tree_lock(q); | |
1da177e4 | 150 | old_cl = __cls_set_class(clp, cl); |
34e3759c | 151 | sch_tree_unlock(q); |
1da177e4 LT |
152 | return old_cl; |
153 | } | |
154 | ||
155 | static inline void | |
156 | tcf_bind_filter(struct tcf_proto *tp, struct tcf_result *r, unsigned long base) | |
157 | { | |
34e3759c | 158 | struct Qdisc *q = tp->chain->block->q; |
1da177e4 LT |
159 | unsigned long cl; |
160 | ||
34e3759c JP |
161 | /* Check q as it is not set for shared blocks. In that case, |
162 | * setting class is not supported. | |
163 | */ | |
164 | if (!q) | |
165 | return; | |
166 | cl = q->ops->cl_ops->bind_tcf(q, base, r->classid); | |
167 | cl = cls_set_class(q, &r->class, cl); | |
1da177e4 | 168 | if (cl) |
34e3759c | 169 | q->ops->cl_ops->unbind_tcf(q, cl); |
1da177e4 LT |
170 | } |
171 | ||
172 | static inline void | |
173 | tcf_unbind_filter(struct tcf_proto *tp, struct tcf_result *r) | |
174 | { | |
34e3759c | 175 | struct Qdisc *q = tp->chain->block->q; |
1da177e4 LT |
176 | unsigned long cl; |
177 | ||
34e3759c JP |
178 | if (!q) |
179 | return; | |
1da177e4 | 180 | if ((cl = __cls_set_class(&r->class, 0)) != 0) |
34e3759c | 181 | q->ops->cl_ops->unbind_tcf(q, cl); |
1da177e4 LT |
182 | } |
183 | ||
fd2c3ef7 | 184 | struct tcf_exts { |
1da177e4 | 185 | #ifdef CONFIG_NET_CLS_ACT |
33be6271 | 186 | __u32 type; /* for backward compat(TCA_OLD_COMPAT) */ |
22dc13c8 WC |
187 | int nr_actions; |
188 | struct tc_action **actions; | |
e4b95c41 | 189 | struct net *net; |
1da177e4 | 190 | #endif |
5da57f42 WC |
191 | /* Map to export classifier specific extension TLV types to the |
192 | * generic extensions API. Unsupported extensions must be set to 0. | |
193 | */ | |
1da177e4 LT |
194 | int action; |
195 | int police; | |
196 | }; | |
197 | ||
14215108 CW |
198 | static inline int tcf_exts_init(struct tcf_exts *exts, struct net *net, |
199 | int action, int police) | |
33be6271 WC |
200 | { |
201 | #ifdef CONFIG_NET_CLS_ACT | |
5da57f42 | 202 | exts->type = 0; |
22dc13c8 | 203 | exts->nr_actions = 0; |
14215108 | 204 | exts->net = net; |
22dc13c8 WC |
205 | exts->actions = kcalloc(TCA_ACT_MAX_PRIO, sizeof(struct tc_action *), |
206 | GFP_KERNEL); | |
b9a24bb7 WC |
207 | if (!exts->actions) |
208 | return -ENOMEM; | |
33be6271 | 209 | #endif |
5da57f42 WC |
210 | exts->action = action; |
211 | exts->police = police; | |
b9a24bb7 | 212 | return 0; |
33be6271 WC |
213 | } |
214 | ||
e4b95c41 CW |
215 | /* Return false if the netns is being destroyed in cleanup_net(). Callers |
216 | * need to do cleanup synchronously in this case, otherwise may race with | |
217 | * tc_action_net_exit(). Return true for other cases. | |
218 | */ | |
219 | static inline bool tcf_exts_get_net(struct tcf_exts *exts) | |
220 | { | |
221 | #ifdef CONFIG_NET_CLS_ACT | |
222 | exts->net = maybe_get_net(exts->net); | |
223 | return exts->net != NULL; | |
224 | #else | |
225 | return true; | |
226 | #endif | |
227 | } | |
228 | ||
229 | static inline void tcf_exts_put_net(struct tcf_exts *exts) | |
230 | { | |
231 | #ifdef CONFIG_NET_CLS_ACT | |
232 | if (exts->net) | |
233 | put_net(exts->net); | |
234 | #endif | |
235 | } | |
236 | ||
22dc13c8 | 237 | #ifdef CONFIG_NET_CLS_ACT |
244cd96a CW |
238 | #define tcf_exts_for_each_action(i, a, exts) \ |
239 | for (i = 0; i < TCA_ACT_MAX_PRIO && ((a) = (exts)->actions[i]); i++) | |
240 | #else | |
241 | #define tcf_exts_for_each_action(i, a, exts) \ | |
191672ca | 242 | for (; 0; (void)(i), (void)(a), (void)(exts)) |
22dc13c8 | 243 | #endif |
22dc13c8 | 244 | |
d897a638 JK |
245 | static inline void |
246 | tcf_exts_stats_update(const struct tcf_exts *exts, | |
247 | u64 bytes, u64 packets, u64 lastuse) | |
248 | { | |
249 | #ifdef CONFIG_NET_CLS_ACT | |
250 | int i; | |
251 | ||
252 | preempt_disable(); | |
253 | ||
254 | for (i = 0; i < exts->nr_actions; i++) { | |
255 | struct tc_action *a = exts->actions[i]; | |
256 | ||
28169aba | 257 | tcf_action_stats_update(a, bytes, packets, lastuse, true); |
d897a638 JK |
258 | } |
259 | ||
260 | preempt_enable(); | |
261 | #endif | |
262 | } | |
263 | ||
3bcc0cec JP |
264 | /** |
265 | * tcf_exts_has_actions - check if at least one action is present | |
266 | * @exts: tc filter extensions handle | |
267 | * | |
268 | * Returns true if at least one action is present. | |
269 | */ | |
270 | static inline bool tcf_exts_has_actions(struct tcf_exts *exts) | |
271 | { | |
2734437e | 272 | #ifdef CONFIG_NET_CLS_ACT |
3bcc0cec JP |
273 | return exts->nr_actions; |
274 | #else | |
275 | return false; | |
276 | #endif | |
277 | } | |
2734437e | 278 | |
af69afc5 JP |
279 | /** |
280 | * tcf_exts_exec - execute tc filter extensions | |
281 | * @skb: socket buffer | |
282 | * @exts: tc filter extensions handle | |
283 | * @res: desired result | |
284 | * | |
af089e70 | 285 | * Executes all configured extensions. Returns TC_ACT_OK on a normal execution, |
af69afc5 JP |
286 | * a negative number if the filter must be considered unmatched or |
287 | * a positive action code (TC_ACT_*) which must be returned to the | |
288 | * underlying layer. | |
289 | */ | |
290 | static inline int | |
291 | tcf_exts_exec(struct sk_buff *skb, struct tcf_exts *exts, | |
292 | struct tcf_result *res) | |
293 | { | |
294 | #ifdef CONFIG_NET_CLS_ACT | |
ec1a9cca | 295 | return tcf_action_exec(skb, exts->actions, exts->nr_actions, res); |
af69afc5 | 296 | #endif |
af089e70 | 297 | return TC_ACT_OK; |
af69afc5 JP |
298 | } |
299 | ||
5c15257f JP |
300 | int tcf_exts_validate(struct net *net, struct tcf_proto *tp, |
301 | struct nlattr **tb, struct nlattr *rate_tlv, | |
ec6743a1 | 302 | struct tcf_exts *exts, bool ovr, bool rtnl_held, |
50a56190 | 303 | struct netlink_ext_ack *extack); |
18d0264f | 304 | void tcf_exts_destroy(struct tcf_exts *exts); |
9b0d4446 | 305 | void tcf_exts_change(struct tcf_exts *dst, struct tcf_exts *src); |
5da57f42 WC |
306 | int tcf_exts_dump(struct sk_buff *skb, struct tcf_exts *exts); |
307 | int tcf_exts_dump_stats(struct sk_buff *skb, struct tcf_exts *exts); | |
1da177e4 LT |
308 | |
309 | /** | |
310 | * struct tcf_pkt_info - packet information | |
311 | */ | |
fd2c3ef7 | 312 | struct tcf_pkt_info { |
1da177e4 LT |
313 | unsigned char * ptr; |
314 | int nexthdr; | |
315 | }; | |
316 | ||
317 | #ifdef CONFIG_NET_EMATCH | |
318 | ||
319 | struct tcf_ematch_ops; | |
320 | ||
321 | /** | |
322 | * struct tcf_ematch - extended match (ematch) | |
323 | * | |
324 | * @matchid: identifier to allow userspace to reidentify a match | |
325 | * @flags: flags specifying attributes and the relation to other matches | |
326 | * @ops: the operations lookup table of the corresponding ematch module | |
327 | * @datalen: length of the ematch specific configuration data | |
328 | * @data: ematch specific data | |
329 | */ | |
fd2c3ef7 | 330 | struct tcf_ematch { |
1da177e4 LT |
331 | struct tcf_ematch_ops * ops; |
332 | unsigned long data; | |
333 | unsigned int datalen; | |
334 | u16 matchid; | |
335 | u16 flags; | |
82a470f1 | 336 | struct net *net; |
1da177e4 LT |
337 | }; |
338 | ||
339 | static inline int tcf_em_is_container(struct tcf_ematch *em) | |
340 | { | |
341 | return !em->ops; | |
342 | } | |
343 | ||
344 | static inline int tcf_em_is_simple(struct tcf_ematch *em) | |
345 | { | |
346 | return em->flags & TCF_EM_SIMPLE; | |
347 | } | |
348 | ||
349 | static inline int tcf_em_is_inverted(struct tcf_ematch *em) | |
350 | { | |
351 | return em->flags & TCF_EM_INVERT; | |
352 | } | |
353 | ||
354 | static inline int tcf_em_last_match(struct tcf_ematch *em) | |
355 | { | |
356 | return (em->flags & TCF_EM_REL_MASK) == TCF_EM_REL_END; | |
357 | } | |
358 | ||
359 | static inline int tcf_em_early_end(struct tcf_ematch *em, int result) | |
360 | { | |
361 | if (tcf_em_last_match(em)) | |
362 | return 1; | |
363 | ||
364 | if (result == 0 && em->flags & TCF_EM_REL_AND) | |
365 | return 1; | |
366 | ||
367 | if (result != 0 && em->flags & TCF_EM_REL_OR) | |
368 | return 1; | |
369 | ||
370 | return 0; | |
371 | } | |
372 | ||
373 | /** | |
374 | * struct tcf_ematch_tree - ematch tree handle | |
375 | * | |
376 | * @hdr: ematch tree header supplied by userspace | |
377 | * @matches: array of ematches | |
378 | */ | |
fd2c3ef7 | 379 | struct tcf_ematch_tree { |
1da177e4 LT |
380 | struct tcf_ematch_tree_hdr hdr; |
381 | struct tcf_ematch * matches; | |
382 | ||
383 | }; | |
384 | ||
385 | /** | |
386 | * struct tcf_ematch_ops - ematch module operations | |
387 | * | |
388 | * @kind: identifier (kind) of this ematch module | |
389 | * @datalen: length of expected configuration data (optional) | |
390 | * @change: called during validation (optional) | |
391 | * @match: called during ematch tree evaluation, must return 1/0 | |
392 | * @destroy: called during destroyage (optional) | |
393 | * @dump: called during dumping process (optional) | |
394 | * @owner: owner, must be set to THIS_MODULE | |
395 | * @link: link to previous/next ematch module (internal use) | |
396 | */ | |
fd2c3ef7 | 397 | struct tcf_ematch_ops { |
1da177e4 LT |
398 | int kind; |
399 | int datalen; | |
82a470f1 | 400 | int (*change)(struct net *net, void *, |
1da177e4 LT |
401 | int, struct tcf_ematch *); |
402 | int (*match)(struct sk_buff *, struct tcf_ematch *, | |
403 | struct tcf_pkt_info *); | |
82a470f1 | 404 | void (*destroy)(struct tcf_ematch *); |
1da177e4 LT |
405 | int (*dump)(struct sk_buff *, struct tcf_ematch *); |
406 | struct module *owner; | |
407 | struct list_head link; | |
408 | }; | |
409 | ||
5c15257f JP |
410 | int tcf_em_register(struct tcf_ematch_ops *); |
411 | void tcf_em_unregister(struct tcf_ematch_ops *); | |
412 | int tcf_em_tree_validate(struct tcf_proto *, struct nlattr *, | |
413 | struct tcf_ematch_tree *); | |
82a470f1 | 414 | void tcf_em_tree_destroy(struct tcf_ematch_tree *); |
5c15257f JP |
415 | int tcf_em_tree_dump(struct sk_buff *, struct tcf_ematch_tree *, int); |
416 | int __tcf_em_tree_match(struct sk_buff *, struct tcf_ematch_tree *, | |
417 | struct tcf_pkt_info *); | |
1da177e4 | 418 | |
1da177e4 LT |
419 | /** |
420 | * tcf_em_tree_match - evaulate an ematch tree | |
421 | * | |
422 | * @skb: socket buffer of the packet in question | |
423 | * @tree: ematch tree to be used for evaluation | |
424 | * @info: packet information examined by classifier | |
425 | * | |
426 | * This function matches @skb against the ematch tree in @tree by going | |
427 | * through all ematches respecting their logic relations returning | |
428 | * as soon as the result is obvious. | |
429 | * | |
430 | * Returns 1 if the ematch tree as-one matches, no ematches are configured | |
431 | * or ematch is not enabled in the kernel, otherwise 0 is returned. | |
432 | */ | |
433 | static inline int tcf_em_tree_match(struct sk_buff *skb, | |
434 | struct tcf_ematch_tree *tree, | |
435 | struct tcf_pkt_info *info) | |
436 | { | |
437 | if (tree->hdr.nmatches) | |
438 | return __tcf_em_tree_match(skb, tree, info); | |
439 | else | |
440 | return 1; | |
441 | } | |
442 | ||
db3d99c0 PM |
443 | #define MODULE_ALIAS_TCF_EMATCH(kind) MODULE_ALIAS("ematch-kind-" __stringify(kind)) |
444 | ||
1da177e4 LT |
445 | #else /* CONFIG_NET_EMATCH */ |
446 | ||
fd2c3ef7 | 447 | struct tcf_ematch_tree { |
1da177e4 LT |
448 | }; |
449 | ||
450 | #define tcf_em_tree_validate(tp, tb, t) ((void)(t), 0) | |
82a470f1 | 451 | #define tcf_em_tree_destroy(t) do { (void)(t); } while(0) |
1da177e4 | 452 | #define tcf_em_tree_dump(skb, t, tlv) (0) |
1da177e4 LT |
453 | #define tcf_em_tree_match(skb, t, info) ((void)(info), 1) |
454 | ||
455 | #endif /* CONFIG_NET_EMATCH */ | |
456 | ||
457 | static inline unsigned char * tcf_get_base_ptr(struct sk_buff *skb, int layer) | |
458 | { | |
459 | switch (layer) { | |
460 | case TCF_LAYER_LINK: | |
d3303a65 | 461 | return skb_mac_header(skb); |
1da177e4 | 462 | case TCF_LAYER_NETWORK: |
d56f90a7 | 463 | return skb_network_header(skb); |
1da177e4 | 464 | case TCF_LAYER_TRANSPORT: |
9c70220b | 465 | return skb_transport_header(skb); |
1da177e4 LT |
466 | } |
467 | ||
468 | return NULL; | |
469 | } | |
470 | ||
eddc9ec5 ACM |
471 | static inline int tcf_valid_offset(const struct sk_buff *skb, |
472 | const unsigned char *ptr, const int len) | |
1da177e4 | 473 | { |
da521b2c DM |
474 | return likely((ptr + len) <= skb_tail_pointer(skb) && |
475 | ptr >= skb->head && | |
476 | (ptr <= (ptr + len))); | |
1da177e4 LT |
477 | } |
478 | ||
1da177e4 | 479 | static inline int |
1057c55f AA |
480 | tcf_change_indev(struct net *net, struct nlattr *indev_tlv, |
481 | struct netlink_ext_ack *extack) | |
1da177e4 | 482 | { |
2519a602 WC |
483 | char indev[IFNAMSIZ]; |
484 | struct net_device *dev; | |
485 | ||
1057c55f AA |
486 | if (nla_strlcpy(indev, indev_tlv, IFNAMSIZ) >= IFNAMSIZ) { |
487 | NL_SET_ERR_MSG(extack, "Interface name too long"); | |
1da177e4 | 488 | return -EINVAL; |
1057c55f | 489 | } |
2519a602 WC |
490 | dev = __dev_get_by_name(net, indev); |
491 | if (!dev) | |
492 | return -ENODEV; | |
493 | return dev->ifindex; | |
1da177e4 LT |
494 | } |
495 | ||
2519a602 WC |
496 | static inline bool |
497 | tcf_match_indev(struct sk_buff *skb, int ifindex) | |
1da177e4 | 498 | { |
2519a602 WC |
499 | if (!ifindex) |
500 | return true; | |
501 | if (!skb->skb_iif) | |
502 | return false; | |
503 | return ifindex == skb->skb_iif; | |
1da177e4 | 504 | } |
1da177e4 | 505 | |
3a7b6861 | 506 | int tc_setup_flow_action(struct flow_action *flow_action, |
9838b20a | 507 | const struct tcf_exts *exts, bool rtnl_held); |
5a6ff4b1 VB |
508 | void tc_cleanup_flow_action(struct flow_action *flow_action); |
509 | ||
aeb3fecd | 510 | int tc_setup_cb_call(struct tcf_block *block, enum tc_setup_type type, |
40119211 VB |
511 | void *type_data, bool err_stop, bool rtnl_held); |
512 | int tc_setup_cb_add(struct tcf_block *block, struct tcf_proto *tp, | |
513 | enum tc_setup_type type, void *type_data, bool err_stop, | |
514 | u32 *flags, unsigned int *in_hw_count, bool rtnl_held); | |
515 | int tc_setup_cb_replace(struct tcf_block *block, struct tcf_proto *tp, | |
516 | enum tc_setup_type type, void *type_data, bool err_stop, | |
517 | u32 *old_flags, unsigned int *old_in_hw_count, | |
518 | u32 *new_flags, unsigned int *new_in_hw_count, | |
519 | bool rtnl_held); | |
520 | int tc_setup_cb_destroy(struct tcf_block *block, struct tcf_proto *tp, | |
521 | enum tc_setup_type type, void *type_data, bool err_stop, | |
522 | u32 *flags, unsigned int *in_hw_count, bool rtnl_held); | |
523 | int tc_setup_cb_reoffload(struct tcf_block *block, struct tcf_proto *tp, | |
524 | bool add, flow_setup_cb_t *cb, | |
525 | enum tc_setup_type type, void *type_data, | |
526 | void *cb_priv, u32 *flags, unsigned int *in_hw_count); | |
e3ab786b | 527 | unsigned int tcf_exts_num_actions(struct tcf_exts *exts); |
717503b9 | 528 | |
a1b7c5fd JF |
529 | struct tc_cls_u32_knode { |
530 | struct tcf_exts *exts; | |
068ceb35 | 531 | struct tcf_result *res; |
e014860e | 532 | struct tc_u32_sel *sel; |
a1b7c5fd JF |
533 | u32 handle; |
534 | u32 val; | |
535 | u32 mask; | |
536 | u32 link_handle; | |
e014860e | 537 | u8 fshift; |
a1b7c5fd JF |
538 | }; |
539 | ||
540 | struct tc_cls_u32_hnode { | |
541 | u32 handle; | |
542 | u32 prio; | |
543 | unsigned int divisor; | |
544 | }; | |
545 | ||
546 | enum tc_clsu32_command { | |
547 | TC_CLSU32_NEW_KNODE, | |
548 | TC_CLSU32_REPLACE_KNODE, | |
549 | TC_CLSU32_DELETE_KNODE, | |
550 | TC_CLSU32_NEW_HNODE, | |
551 | TC_CLSU32_REPLACE_HNODE, | |
552 | TC_CLSU32_DELETE_HNODE, | |
553 | }; | |
554 | ||
555 | struct tc_cls_u32_offload { | |
f9e30088 | 556 | struct flow_cls_common_offload common; |
a1b7c5fd JF |
557 | /* knode values */ |
558 | enum tc_clsu32_command command; | |
559 | union { | |
560 | struct tc_cls_u32_knode knode; | |
561 | struct tc_cls_u32_hnode hnode; | |
562 | }; | |
563 | }; | |
564 | ||
7b06e8ae | 565 | static inline bool tc_can_offload(const struct net_device *dev) |
6843e7a2 | 566 | { |
70b5aee4 | 567 | return dev->features & NETIF_F_HW_TC; |
6843e7a2 JF |
568 | } |
569 | ||
f9eda14f QM |
570 | static inline bool tc_can_offload_extack(const struct net_device *dev, |
571 | struct netlink_ext_ack *extack) | |
572 | { | |
573 | bool can = tc_can_offload(dev); | |
574 | ||
575 | if (!can) | |
576 | NL_SET_ERR_MSG(extack, "TC offload is disabled on net device"); | |
577 | ||
578 | return can; | |
579 | } | |
580 | ||
878db9f0 JK |
581 | static inline bool |
582 | tc_cls_can_offload_and_chain0(const struct net_device *dev, | |
f9e30088 | 583 | struct flow_cls_common_offload *common) |
878db9f0 JK |
584 | { |
585 | if (!tc_can_offload_extack(dev, common->extack)) | |
586 | return false; | |
587 | if (common->chain_index) { | |
588 | NL_SET_ERR_MSG(common->extack, | |
589 | "Driver supports only offload of chain 0"); | |
590 | return false; | |
591 | } | |
592 | return true; | |
593 | } | |
594 | ||
55330f05 HHZ |
595 | static inline bool tc_skip_hw(u32 flags) |
596 | { | |
597 | return (flags & TCA_CLS_FLAGS_SKIP_HW) ? true : false; | |
598 | } | |
599 | ||
d34e3e18 SS |
600 | static inline bool tc_skip_sw(u32 flags) |
601 | { | |
602 | return (flags & TCA_CLS_FLAGS_SKIP_SW) ? true : false; | |
603 | } | |
604 | ||
605 | /* SKIP_HW and SKIP_SW are mutually exclusive flags. */ | |
606 | static inline bool tc_flags_valid(u32 flags) | |
607 | { | |
81c7288b MRL |
608 | if (flags & ~(TCA_CLS_FLAGS_SKIP_HW | TCA_CLS_FLAGS_SKIP_SW | |
609 | TCA_CLS_FLAGS_VERBOSE)) | |
d34e3e18 SS |
610 | return false; |
611 | ||
81c7288b | 612 | flags &= TCA_CLS_FLAGS_SKIP_HW | TCA_CLS_FLAGS_SKIP_SW; |
d34e3e18 SS |
613 | if (!(flags ^ (TCA_CLS_FLAGS_SKIP_HW | TCA_CLS_FLAGS_SKIP_SW))) |
614 | return false; | |
615 | ||
616 | return true; | |
617 | } | |
618 | ||
e696028a OG |
619 | static inline bool tc_in_hw(u32 flags) |
620 | { | |
621 | return (flags & TCA_CLS_FLAGS_IN_HW) ? true : false; | |
622 | } | |
623 | ||
34832e1c | 624 | static inline void |
f9e30088 | 625 | tc_cls_common_offload_init(struct flow_cls_common_offload *cls_common, |
34832e1c JK |
626 | const struct tcf_proto *tp, u32 flags, |
627 | struct netlink_ext_ack *extack) | |
628 | { | |
629 | cls_common->chain_index = tp->chain->index; | |
630 | cls_common->protocol = tp->protocol; | |
ef01adae | 631 | cls_common->prio = tp->prio >> 16; |
81c7288b | 632 | if (tc_skip_sw(flags) || flags & TCA_CLS_FLAGS_VERBOSE) |
34832e1c JK |
633 | cls_common->extack = extack; |
634 | } | |
635 | ||
b87f7936 YG |
636 | enum tc_matchall_command { |
637 | TC_CLSMATCHALL_REPLACE, | |
638 | TC_CLSMATCHALL_DESTROY, | |
b7fe4ab8 | 639 | TC_CLSMATCHALL_STATS, |
b87f7936 YG |
640 | }; |
641 | ||
642 | struct tc_cls_matchall_offload { | |
f9e30088 | 643 | struct flow_cls_common_offload common; |
b87f7936 | 644 | enum tc_matchall_command command; |
f00cbf19 | 645 | struct flow_rule *rule; |
b7fe4ab8 | 646 | struct flow_stats stats; |
b87f7936 YG |
647 | unsigned long cookie; |
648 | }; | |
649 | ||
332ae8e2 | 650 | enum tc_clsbpf_command { |
102740bd | 651 | TC_CLSBPF_OFFLOAD, |
68d64063 | 652 | TC_CLSBPF_STATS, |
332ae8e2 JK |
653 | }; |
654 | ||
655 | struct tc_cls_bpf_offload { | |
f9e30088 | 656 | struct flow_cls_common_offload common; |
332ae8e2 JK |
657 | enum tc_clsbpf_command command; |
658 | struct tcf_exts *exts; | |
659 | struct bpf_prog *prog; | |
102740bd | 660 | struct bpf_prog *oldprog; |
332ae8e2 JK |
661 | const char *name; |
662 | bool exts_integrated; | |
663 | }; | |
664 | ||
4e8b86c0 AN |
665 | struct tc_mqprio_qopt_offload { |
666 | /* struct tc_mqprio_qopt must always be the first element */ | |
667 | struct tc_mqprio_qopt qopt; | |
668 | u16 mode; | |
669 | u16 shaper; | |
670 | u32 flags; | |
671 | u64 min_rate[TC_QOPT_MAX_QUEUE]; | |
672 | u64 max_rate[TC_QOPT_MAX_QUEUE]; | |
673 | }; | |
1045ba77 JHS |
674 | |
675 | /* This structure holds cookie structure that is passed from user | |
676 | * to the kernel for actions and classifiers | |
677 | */ | |
678 | struct tc_cookie { | |
679 | u8 *data; | |
680 | u32 len; | |
eec94fdb | 681 | struct rcu_head rcu; |
1045ba77 | 682 | }; |
602f3baf | 683 | |
f34b4aac NF |
684 | struct tc_qopt_offload_stats { |
685 | struct gnet_stats_basic_packed *bstats; | |
686 | struct gnet_stats_queue *qstats; | |
687 | }; | |
688 | ||
f971b132 JK |
689 | enum tc_mq_command { |
690 | TC_MQ_CREATE, | |
691 | TC_MQ_DESTROY, | |
47c669a4 | 692 | TC_MQ_STATS, |
d577a3d2 JK |
693 | TC_MQ_GRAFT, |
694 | }; | |
695 | ||
696 | struct tc_mq_opt_offload_graft_params { | |
697 | unsigned long queue; | |
698 | u32 child_handle; | |
f971b132 JK |
699 | }; |
700 | ||
701 | struct tc_mq_qopt_offload { | |
702 | enum tc_mq_command command; | |
703 | u32 handle; | |
d577a3d2 JK |
704 | union { |
705 | struct tc_qopt_offload_stats stats; | |
706 | struct tc_mq_opt_offload_graft_params graft_params; | |
707 | }; | |
f971b132 JK |
708 | }; |
709 | ||
602f3baf NF |
710 | enum tc_red_command { |
711 | TC_RED_REPLACE, | |
712 | TC_RED_DESTROY, | |
713 | TC_RED_STATS, | |
714 | TC_RED_XSTATS, | |
bf2a752b | 715 | TC_RED_GRAFT, |
602f3baf NF |
716 | }; |
717 | ||
718 | struct tc_red_qopt_offload_params { | |
719 | u32 min; | |
720 | u32 max; | |
721 | u32 probability; | |
c0b7490b | 722 | u32 limit; |
602f3baf | 723 | bool is_ecn; |
190852a5 | 724 | bool is_harddrop; |
416ef9b1 | 725 | struct gnet_stats_queue *qstats; |
602f3baf | 726 | }; |
602f3baf NF |
727 | |
728 | struct tc_red_qopt_offload { | |
729 | enum tc_red_command command; | |
730 | u32 handle; | |
731 | u32 parent; | |
732 | union { | |
733 | struct tc_red_qopt_offload_params set; | |
f34b4aac | 734 | struct tc_qopt_offload_stats stats; |
602f3baf | 735 | struct red_stats *xstats; |
bf2a752b | 736 | u32 child_handle; |
602f3baf NF |
737 | }; |
738 | }; | |
739 | ||
890d8d23 JK |
740 | enum tc_gred_command { |
741 | TC_GRED_REPLACE, | |
742 | TC_GRED_DESTROY, | |
e49efd52 | 743 | TC_GRED_STATS, |
890d8d23 JK |
744 | }; |
745 | ||
746 | struct tc_gred_vq_qopt_offload_params { | |
747 | bool present; | |
748 | u32 limit; | |
749 | u32 prio; | |
750 | u32 min; | |
751 | u32 max; | |
752 | bool is_ecn; | |
753 | bool is_harddrop; | |
754 | u32 probability; | |
755 | /* Only need backlog, see struct tc_prio_qopt_offload_params */ | |
756 | u32 *backlog; | |
757 | }; | |
758 | ||
759 | struct tc_gred_qopt_offload_params { | |
760 | bool grio_on; | |
761 | bool wred_on; | |
762 | unsigned int dp_cnt; | |
763 | unsigned int dp_def; | |
764 | struct gnet_stats_queue *qstats; | |
765 | struct tc_gred_vq_qopt_offload_params tab[MAX_DPs]; | |
766 | }; | |
767 | ||
e49efd52 JK |
768 | struct tc_gred_qopt_offload_stats { |
769 | struct gnet_stats_basic_packed bstats[MAX_DPs]; | |
770 | struct gnet_stats_queue qstats[MAX_DPs]; | |
771 | struct red_stats *xstats[MAX_DPs]; | |
772 | }; | |
773 | ||
890d8d23 JK |
774 | struct tc_gred_qopt_offload { |
775 | enum tc_gred_command command; | |
776 | u32 handle; | |
777 | u32 parent; | |
778 | union { | |
779 | struct tc_gred_qopt_offload_params set; | |
e49efd52 | 780 | struct tc_gred_qopt_offload_stats stats; |
890d8d23 JK |
781 | }; |
782 | }; | |
783 | ||
7fdb61b4 NF |
784 | enum tc_prio_command { |
785 | TC_PRIO_REPLACE, | |
786 | TC_PRIO_DESTROY, | |
787 | TC_PRIO_STATS, | |
b9c7a7ac | 788 | TC_PRIO_GRAFT, |
7fdb61b4 NF |
789 | }; |
790 | ||
791 | struct tc_prio_qopt_offload_params { | |
792 | int bands; | |
793 | u8 priomap[TC_PRIO_MAX + 1]; | |
9586a992 PM |
794 | /* At the point of un-offloading the Qdisc, the reported backlog and |
795 | * qlen need to be reduced by the portion that is in HW. | |
7fdb61b4 NF |
796 | */ |
797 | struct gnet_stats_queue *qstats; | |
798 | }; | |
799 | ||
b9c7a7ac NF |
800 | struct tc_prio_qopt_offload_graft_params { |
801 | u8 band; | |
802 | u32 child_handle; | |
803 | }; | |
804 | ||
7fdb61b4 NF |
805 | struct tc_prio_qopt_offload { |
806 | enum tc_prio_command command; | |
807 | u32 handle; | |
808 | u32 parent; | |
809 | union { | |
810 | struct tc_prio_qopt_offload_params replace_params; | |
811 | struct tc_qopt_offload_stats stats; | |
b9c7a7ac | 812 | struct tc_prio_qopt_offload_graft_params graft_params; |
7fdb61b4 NF |
813 | }; |
814 | }; | |
b9c7a7ac | 815 | |
98b0e5f6 JK |
816 | enum tc_root_command { |
817 | TC_ROOT_GRAFT, | |
818 | }; | |
819 | ||
820 | struct tc_root_qopt_offload { | |
821 | enum tc_root_command command; | |
822 | u32 handle; | |
823 | bool ingress; | |
824 | }; | |
825 | ||
d35eb52b PM |
826 | enum tc_ets_command { |
827 | TC_ETS_REPLACE, | |
828 | TC_ETS_DESTROY, | |
829 | TC_ETS_STATS, | |
830 | TC_ETS_GRAFT, | |
831 | }; | |
832 | ||
833 | struct tc_ets_qopt_offload_replace_params { | |
834 | unsigned int bands; | |
835 | u8 priomap[TC_PRIO_MAX + 1]; | |
836 | unsigned int quanta[TCQ_ETS_MAX_BANDS]; /* 0 for strict bands. */ | |
837 | unsigned int weights[TCQ_ETS_MAX_BANDS]; | |
838 | struct gnet_stats_queue *qstats; | |
839 | }; | |
840 | ||
841 | struct tc_ets_qopt_offload_graft_params { | |
842 | u8 band; | |
843 | u32 child_handle; | |
844 | }; | |
845 | ||
846 | struct tc_ets_qopt_offload { | |
847 | enum tc_ets_command command; | |
848 | u32 handle; | |
849 | u32 parent; | |
850 | union { | |
851 | struct tc_ets_qopt_offload_replace_params replace_params; | |
852 | struct tc_qopt_offload_stats stats; | |
853 | struct tc_ets_qopt_offload_graft_params graft_params; | |
854 | }; | |
855 | }; | |
856 | ||
ef6aadcc PM |
857 | enum tc_tbf_command { |
858 | TC_TBF_REPLACE, | |
859 | TC_TBF_DESTROY, | |
860 | TC_TBF_STATS, | |
861 | }; | |
862 | ||
863 | struct tc_tbf_qopt_offload_replace_params { | |
864 | struct psched_ratecfg rate; | |
865 | u32 max_size; | |
866 | struct gnet_stats_queue *qstats; | |
867 | }; | |
868 | ||
869 | struct tc_tbf_qopt_offload { | |
870 | enum tc_tbf_command command; | |
871 | u32 handle; | |
872 | u32 parent; | |
873 | union { | |
874 | struct tc_tbf_qopt_offload_replace_params replace_params; | |
875 | struct tc_qopt_offload_stats stats; | |
876 | }; | |
877 | }; | |
878 | ||
1da177e4 | 879 | #endif |