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TOMOYO Linux Cross Reference
Linux/include/net/pkt_cls.h

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  1 /* SPDX-License-Identifier: GPL-2.0 */
  2 #ifndef __NET_PKT_CLS_H
  3 #define __NET_PKT_CLS_H
  4 
  5 #include <linux/pkt_cls.h>
  6 #include <linux/workqueue.h>
  7 #include <net/sch_generic.h>
  8 #include <net/act_api.h>
  9 
 10 /* TC action not accessible from user space */
 11 #define TC_ACT_REINSERT         (TC_ACT_VALUE_MAX + 1)
 12 
 13 /* Basic packet classifier frontend definitions. */
 14 
 15 struct tcf_walker {
 16         int     stop;
 17         int     skip;
 18         int     count;
 19         unsigned long cookie;
 20         int     (*fn)(struct tcf_proto *, void *node, struct tcf_walker *);
 21 };
 22 
 23 int register_tcf_proto_ops(struct tcf_proto_ops *ops);
 24 int unregister_tcf_proto_ops(struct tcf_proto_ops *ops);
 25 
 26 enum tcf_block_binder_type {
 27         TCF_BLOCK_BINDER_TYPE_UNSPEC,
 28         TCF_BLOCK_BINDER_TYPE_CLSACT_INGRESS,
 29         TCF_BLOCK_BINDER_TYPE_CLSACT_EGRESS,
 30 };
 31 
 32 struct tcf_block_ext_info {
 33         enum tcf_block_binder_type binder_type;
 34         tcf_chain_head_change_t *chain_head_change;
 35         void *chain_head_change_priv;
 36         u32 block_index;
 37 };
 38 
 39 struct tcf_block_cb;
 40 bool tcf_queue_work(struct rcu_work *rwork, work_func_t func);
 41 
 42 #ifdef CONFIG_NET_CLS
 43 struct tcf_chain *tcf_chain_get_by_act(struct tcf_block *block,
 44                                        u32 chain_index);
 45 void tcf_chain_put_by_act(struct tcf_chain *chain);
 46 void tcf_block_netif_keep_dst(struct tcf_block *block);
 47 int tcf_block_get(struct tcf_block **p_block,
 48                   struct tcf_proto __rcu **p_filter_chain, struct Qdisc *q,
 49                   struct netlink_ext_ack *extack);
 50 int tcf_block_get_ext(struct tcf_block **p_block, struct Qdisc *q,
 51                       struct tcf_block_ext_info *ei,
 52                       struct netlink_ext_ack *extack);
 53 void tcf_block_put(struct tcf_block *block);
 54 void tcf_block_put_ext(struct tcf_block *block, struct Qdisc *q,
 55                        struct tcf_block_ext_info *ei);
 56 
 57 static inline bool tcf_block_shared(struct tcf_block *block)
 58 {
 59         return block->index;
 60 }
 61 
 62 static inline struct Qdisc *tcf_block_q(struct tcf_block *block)
 63 {
 64         WARN_ON(tcf_block_shared(block));
 65         return block->q;
 66 }
 67 
 68 static inline struct net_device *tcf_block_dev(struct tcf_block *block)
 69 {
 70         return tcf_block_q(block)->dev_queue->dev;
 71 }
 72 
 73 void *tcf_block_cb_priv(struct tcf_block_cb *block_cb);
 74 struct tcf_block_cb *tcf_block_cb_lookup(struct tcf_block *block,
 75                                          tc_setup_cb_t *cb, void *cb_ident);
 76 void tcf_block_cb_incref(struct tcf_block_cb *block_cb);
 77 unsigned int tcf_block_cb_decref(struct tcf_block_cb *block_cb);
 78 struct tcf_block_cb *__tcf_block_cb_register(struct tcf_block *block,
 79                                              tc_setup_cb_t *cb, void *cb_ident,
 80                                              void *cb_priv,
 81                                              struct netlink_ext_ack *extack);
 82 int tcf_block_cb_register(struct tcf_block *block,
 83                           tc_setup_cb_t *cb, void *cb_ident,
 84                           void *cb_priv, struct netlink_ext_ack *extack);
 85 void __tcf_block_cb_unregister(struct tcf_block *block,
 86                                struct tcf_block_cb *block_cb);
 87 void tcf_block_cb_unregister(struct tcf_block *block,
 88                              tc_setup_cb_t *cb, void *cb_ident);
 89 
 90 int tcf_classify(struct sk_buff *skb, const struct tcf_proto *tp,
 91                  struct tcf_result *res, bool compat_mode);
 92 
 93 #else
 94 static inline
 95 int tcf_block_get(struct tcf_block **p_block,
 96                   struct tcf_proto __rcu **p_filter_chain, struct Qdisc *q,
 97                   struct netlink_ext_ack *extack)
 98 {
 99         return 0;
100 }
101 
102 static inline
103 int tcf_block_get_ext(struct tcf_block **p_block, struct Qdisc *q,
104                       struct tcf_block_ext_info *ei,
105                       struct netlink_ext_ack *extack)
106 {
107         return 0;
108 }
109 
110 static inline void tcf_block_put(struct tcf_block *block)
111 {
112 }
113 
114 static inline
115 void tcf_block_put_ext(struct tcf_block *block, struct Qdisc *q,
116                        struct tcf_block_ext_info *ei)
117 {
118 }
119 
120 static inline struct Qdisc *tcf_block_q(struct tcf_block *block)
121 {
122         return NULL;
123 }
124 
125 static inline struct net_device *tcf_block_dev(struct tcf_block *block)
126 {
127         return NULL;
128 }
129 
130 static inline
131 int tc_setup_cb_block_register(struct tcf_block *block, tc_setup_cb_t *cb,
132                                void *cb_priv)
133 {
134         return 0;
135 }
136 
137 static inline
138 void tc_setup_cb_block_unregister(struct tcf_block *block, tc_setup_cb_t *cb,
139                                   void *cb_priv)
140 {
141 }
142 
143 static inline
144 void *tcf_block_cb_priv(struct tcf_block_cb *block_cb)
145 {
146         return NULL;
147 }
148 
149 static inline
150 struct tcf_block_cb *tcf_block_cb_lookup(struct tcf_block *block,
151                                          tc_setup_cb_t *cb, void *cb_ident)
152 {
153         return NULL;
154 }
155 
156 static inline
157 void tcf_block_cb_incref(struct tcf_block_cb *block_cb)
158 {
159 }
160 
161 static inline
162 unsigned int tcf_block_cb_decref(struct tcf_block_cb *block_cb)
163 {
164         return 0;
165 }
166 
167 static inline
168 struct tcf_block_cb *__tcf_block_cb_register(struct tcf_block *block,
169                                              tc_setup_cb_t *cb, void *cb_ident,
170                                              void *cb_priv,
171                                              struct netlink_ext_ack *extack)
172 {
173         return NULL;
174 }
175 
176 static inline
177 int tcf_block_cb_register(struct tcf_block *block,
178                           tc_setup_cb_t *cb, void *cb_ident,
179                           void *cb_priv, struct netlink_ext_ack *extack)
180 {
181         return 0;
182 }
183 
184 static inline
185 void __tcf_block_cb_unregister(struct tcf_block *block,
186                                struct tcf_block_cb *block_cb)
187 {
188 }
189 
190 static inline
191 void tcf_block_cb_unregister(struct tcf_block *block,
192                              tc_setup_cb_t *cb, void *cb_ident)
193 {
194 }
195 
196 static inline int tcf_classify(struct sk_buff *skb, const struct tcf_proto *tp,
197                                struct tcf_result *res, bool compat_mode)
198 {
199         return TC_ACT_UNSPEC;
200 }
201 #endif
202 
203 static inline unsigned long
204 __cls_set_class(unsigned long *clp, unsigned long cl)
205 {
206         return xchg(clp, cl);
207 }
208 
209 static inline unsigned long
210 cls_set_class(struct Qdisc *q, unsigned long *clp, unsigned long cl)
211 {
212         unsigned long old_cl;
213 
214         sch_tree_lock(q);
215         old_cl = __cls_set_class(clp, cl);
216         sch_tree_unlock(q);
217         return old_cl;
218 }
219 
220 static inline void
221 tcf_bind_filter(struct tcf_proto *tp, struct tcf_result *r, unsigned long base)
222 {
223         struct Qdisc *q = tp->chain->block->q;
224         unsigned long cl;
225 
226         /* Check q as it is not set for shared blocks. In that case,
227          * setting class is not supported.
228          */
229         if (!q)
230                 return;
231         cl = q->ops->cl_ops->bind_tcf(q, base, r->classid);
232         cl = cls_set_class(q, &r->class, cl);
233         if (cl)
234                 q->ops->cl_ops->unbind_tcf(q, cl);
235 }
236 
237 static inline void
238 tcf_unbind_filter(struct tcf_proto *tp, struct tcf_result *r)
239 {
240         struct Qdisc *q = tp->chain->block->q;
241         unsigned long cl;
242 
243         if (!q)
244                 return;
245         if ((cl = __cls_set_class(&r->class, 0)) != 0)
246                 q->ops->cl_ops->unbind_tcf(q, cl);
247 }
248 
249 struct tcf_exts {
250 #ifdef CONFIG_NET_CLS_ACT
251         __u32   type; /* for backward compat(TCA_OLD_COMPAT) */
252         int nr_actions;
253         struct tc_action **actions;
254         struct net *net;
255 #endif
256         /* Map to export classifier specific extension TLV types to the
257          * generic extensions API. Unsupported extensions must be set to 0.
258          */
259         int action;
260         int police;
261 };
262 
263 static inline int tcf_exts_init(struct tcf_exts *exts, int action, int police)
264 {
265 #ifdef CONFIG_NET_CLS_ACT
266         exts->type = 0;
267         exts->nr_actions = 0;
268         exts->net = NULL;
269         exts->actions = kcalloc(TCA_ACT_MAX_PRIO, sizeof(struct tc_action *),
270                                 GFP_KERNEL);
271         if (!exts->actions)
272                 return -ENOMEM;
273 #endif
274         exts->action = action;
275         exts->police = police;
276         return 0;
277 }
278 
279 /* Return false if the netns is being destroyed in cleanup_net(). Callers
280  * need to do cleanup synchronously in this case, otherwise may race with
281  * tc_action_net_exit(). Return true for other cases.
282  */
283 static inline bool tcf_exts_get_net(struct tcf_exts *exts)
284 {
285 #ifdef CONFIG_NET_CLS_ACT
286         exts->net = maybe_get_net(exts->net);
287         return exts->net != NULL;
288 #else
289         return true;
290 #endif
291 }
292 
293 static inline void tcf_exts_put_net(struct tcf_exts *exts)
294 {
295 #ifdef CONFIG_NET_CLS_ACT
296         if (exts->net)
297                 put_net(exts->net);
298 #endif
299 }
300 
301 #ifdef CONFIG_NET_CLS_ACT
302 #define tcf_exts_for_each_action(i, a, exts) \
303         for (i = 0; i < TCA_ACT_MAX_PRIO && ((a) = (exts)->actions[i]); i++)
304 #else
305 #define tcf_exts_for_each_action(i, a, exts) \
306         for (; 0; (void)(i), (void)(a), (void)(exts))
307 #endif
308 
309 static inline void
310 tcf_exts_stats_update(const struct tcf_exts *exts,
311                       u64 bytes, u64 packets, u64 lastuse)
312 {
313 #ifdef CONFIG_NET_CLS_ACT
314         int i;
315 
316         preempt_disable();
317 
318         for (i = 0; i < exts->nr_actions; i++) {
319                 struct tc_action *a = exts->actions[i];
320 
321                 tcf_action_stats_update(a, bytes, packets, lastuse);
322         }
323 
324         preempt_enable();
325 #endif
326 }
327 
328 /**
329  * tcf_exts_has_actions - check if at least one action is present
330  * @exts: tc filter extensions handle
331  *
332  * Returns true if at least one action is present.
333  */
334 static inline bool tcf_exts_has_actions(struct tcf_exts *exts)
335 {
336 #ifdef CONFIG_NET_CLS_ACT
337         return exts->nr_actions;
338 #else
339         return false;
340 #endif
341 }
342 
343 /**
344  * tcf_exts_has_one_action - check if exactly one action is present
345  * @exts: tc filter extensions handle
346  *
347  * Returns true if exactly one action is present.
348  */
349 static inline bool tcf_exts_has_one_action(struct tcf_exts *exts)
350 {
351 #ifdef CONFIG_NET_CLS_ACT
352         return exts->nr_actions == 1;
353 #else
354         return false;
355 #endif
356 }
357 
358 static inline struct tc_action *tcf_exts_first_action(struct tcf_exts *exts)
359 {
360 #ifdef CONFIG_NET_CLS_ACT
361         return exts->actions[0];
362 #else
363         return NULL;
364 #endif
365 }
366 
367 /**
368  * tcf_exts_exec - execute tc filter extensions
369  * @skb: socket buffer
370  * @exts: tc filter extensions handle
371  * @res: desired result
372  *
373  * Executes all configured extensions. Returns TC_ACT_OK on a normal execution,
374  * a negative number if the filter must be considered unmatched or
375  * a positive action code (TC_ACT_*) which must be returned to the
376  * underlying layer.
377  */
378 static inline int
379 tcf_exts_exec(struct sk_buff *skb, struct tcf_exts *exts,
380               struct tcf_result *res)
381 {
382 #ifdef CONFIG_NET_CLS_ACT
383         return tcf_action_exec(skb, exts->actions, exts->nr_actions, res);
384 #endif
385         return TC_ACT_OK;
386 }
387 
388 int tcf_exts_validate(struct net *net, struct tcf_proto *tp,
389                       struct nlattr **tb, struct nlattr *rate_tlv,
390                       struct tcf_exts *exts, bool ovr,
391                       struct netlink_ext_ack *extack);
392 void tcf_exts_destroy(struct tcf_exts *exts);
393 void tcf_exts_change(struct tcf_exts *dst, struct tcf_exts *src);
394 int tcf_exts_dump(struct sk_buff *skb, struct tcf_exts *exts);
395 int tcf_exts_dump_stats(struct sk_buff *skb, struct tcf_exts *exts);
396 
397 /**
398  * struct tcf_pkt_info - packet information
399  */
400 struct tcf_pkt_info {
401         unsigned char *         ptr;
402         int                     nexthdr;
403 };
404 
405 #ifdef CONFIG_NET_EMATCH
406 
407 struct tcf_ematch_ops;
408 
409 /**
410  * struct tcf_ematch - extended match (ematch)
411  * 
412  * @matchid: identifier to allow userspace to reidentify a match
413  * @flags: flags specifying attributes and the relation to other matches
414  * @ops: the operations lookup table of the corresponding ematch module
415  * @datalen: length of the ematch specific configuration data
416  * @data: ematch specific data
417  */
418 struct tcf_ematch {
419         struct tcf_ematch_ops * ops;
420         unsigned long           data;
421         unsigned int            datalen;
422         u16                     matchid;
423         u16                     flags;
424         struct net              *net;
425 };
426 
427 static inline int tcf_em_is_container(struct tcf_ematch *em)
428 {
429         return !em->ops;
430 }
431 
432 static inline int tcf_em_is_simple(struct tcf_ematch *em)
433 {
434         return em->flags & TCF_EM_SIMPLE;
435 }
436 
437 static inline int tcf_em_is_inverted(struct tcf_ematch *em)
438 {
439         return em->flags & TCF_EM_INVERT;
440 }
441 
442 static inline int tcf_em_last_match(struct tcf_ematch *em)
443 {
444         return (em->flags & TCF_EM_REL_MASK) == TCF_EM_REL_END;
445 }
446 
447 static inline int tcf_em_early_end(struct tcf_ematch *em, int result)
448 {
449         if (tcf_em_last_match(em))
450                 return 1;
451 
452         if (result == 0 && em->flags & TCF_EM_REL_AND)
453                 return 1;
454 
455         if (result != 0 && em->flags & TCF_EM_REL_OR)
456                 return 1;
457 
458         return 0;
459 }
460         
461 /**
462  * struct tcf_ematch_tree - ematch tree handle
463  *
464  * @hdr: ematch tree header supplied by userspace
465  * @matches: array of ematches
466  */
467 struct tcf_ematch_tree {
468         struct tcf_ematch_tree_hdr hdr;
469         struct tcf_ematch *     matches;
470         
471 };
472 
473 /**
474  * struct tcf_ematch_ops - ematch module operations
475  * 
476  * @kind: identifier (kind) of this ematch module
477  * @datalen: length of expected configuration data (optional)
478  * @change: called during validation (optional)
479  * @match: called during ematch tree evaluation, must return 1/0
480  * @destroy: called during destroyage (optional)
481  * @dump: called during dumping process (optional)
482  * @owner: owner, must be set to THIS_MODULE
483  * @link: link to previous/next ematch module (internal use)
484  */
485 struct tcf_ematch_ops {
486         int                     kind;
487         int                     datalen;
488         int                     (*change)(struct net *net, void *,
489                                           int, struct tcf_ematch *);
490         int                     (*match)(struct sk_buff *, struct tcf_ematch *,
491                                          struct tcf_pkt_info *);
492         void                    (*destroy)(struct tcf_ematch *);
493         int                     (*dump)(struct sk_buff *, struct tcf_ematch *);
494         struct module           *owner;
495         struct list_head        link;
496 };
497 
498 int tcf_em_register(struct tcf_ematch_ops *);
499 void tcf_em_unregister(struct tcf_ematch_ops *);
500 int tcf_em_tree_validate(struct tcf_proto *, struct nlattr *,
501                          struct tcf_ematch_tree *);
502 void tcf_em_tree_destroy(struct tcf_ematch_tree *);
503 int tcf_em_tree_dump(struct sk_buff *, struct tcf_ematch_tree *, int);
504 int __tcf_em_tree_match(struct sk_buff *, struct tcf_ematch_tree *,
505                         struct tcf_pkt_info *);
506 
507 /**
508  * tcf_em_tree_match - evaulate an ematch tree
509  *
510  * @skb: socket buffer of the packet in question
511  * @tree: ematch tree to be used for evaluation
512  * @info: packet information examined by classifier
513  *
514  * This function matches @skb against the ematch tree in @tree by going
515  * through all ematches respecting their logic relations returning
516  * as soon as the result is obvious.
517  *
518  * Returns 1 if the ematch tree as-one matches, no ematches are configured
519  * or ematch is not enabled in the kernel, otherwise 0 is returned.
520  */
521 static inline int tcf_em_tree_match(struct sk_buff *skb,
522                                     struct tcf_ematch_tree *tree,
523                                     struct tcf_pkt_info *info)
524 {
525         if (tree->hdr.nmatches)
526                 return __tcf_em_tree_match(skb, tree, info);
527         else
528                 return 1;
529 }
530 
531 #define MODULE_ALIAS_TCF_EMATCH(kind)   MODULE_ALIAS("ematch-kind-" __stringify(kind))
532 
533 #else /* CONFIG_NET_EMATCH */
534 
535 struct tcf_ematch_tree {
536 };
537 
538 #define tcf_em_tree_validate(tp, tb, t) ((void)(t), 0)
539 #define tcf_em_tree_destroy(t) do { (void)(t); } while(0)
540 #define tcf_em_tree_dump(skb, t, tlv) (0)
541 #define tcf_em_tree_match(skb, t, info) ((void)(info), 1)
542 
543 #endif /* CONFIG_NET_EMATCH */
544 
545 static inline unsigned char * tcf_get_base_ptr(struct sk_buff *skb, int layer)
546 {
547         switch (layer) {
548                 case TCF_LAYER_LINK:
549                         return skb_mac_header(skb);
550                 case TCF_LAYER_NETWORK:
551                         return skb_network_header(skb);
552                 case TCF_LAYER_TRANSPORT:
553                         return skb_transport_header(skb);
554         }
555 
556         return NULL;
557 }
558 
559 static inline int tcf_valid_offset(const struct sk_buff *skb,
560                                    const unsigned char *ptr, const int len)
561 {
562         return likely((ptr + len) <= skb_tail_pointer(skb) &&
563                       ptr >= skb->head &&
564                       (ptr <= (ptr + len)));
565 }
566 
567 #ifdef CONFIG_NET_CLS_IND
568 #include <net/net_namespace.h>
569 
570 static inline int
571 tcf_change_indev(struct net *net, struct nlattr *indev_tlv,
572                  struct netlink_ext_ack *extack)
573 {
574         char indev[IFNAMSIZ];
575         struct net_device *dev;
576 
577         if (nla_strlcpy(indev, indev_tlv, IFNAMSIZ) >= IFNAMSIZ) {
578                 NL_SET_ERR_MSG(extack, "Interface name too long");
579                 return -EINVAL;
580         }
581         dev = __dev_get_by_name(net, indev);
582         if (!dev)
583                 return -ENODEV;
584         return dev->ifindex;
585 }
586 
587 static inline bool
588 tcf_match_indev(struct sk_buff *skb, int ifindex)
589 {
590         if (!ifindex)
591                 return true;
592         if  (!skb->skb_iif)
593                 return false;
594         return ifindex == skb->skb_iif;
595 }
596 #endif /* CONFIG_NET_CLS_IND */
597 
598 int tc_setup_cb_call(struct tcf_block *block, struct tcf_exts *exts,
599                      enum tc_setup_type type, void *type_data, bool err_stop);
600 
601 enum tc_block_command {
602         TC_BLOCK_BIND,
603         TC_BLOCK_UNBIND,
604 };
605 
606 struct tc_block_offload {
607         enum tc_block_command command;
608         enum tcf_block_binder_type binder_type;
609         struct tcf_block *block;
610         struct netlink_ext_ack *extack;
611 };
612 
613 struct tc_cls_common_offload {
614         u32 chain_index;
615         __be16 protocol;
616         u32 prio;
617         struct netlink_ext_ack *extack;
618 };
619 
620 struct tc_cls_u32_knode {
621         struct tcf_exts *exts;
622         struct tc_u32_sel *sel;
623         u32 handle;
624         u32 val;
625         u32 mask;
626         u32 link_handle;
627         u8 fshift;
628 };
629 
630 struct tc_cls_u32_hnode {
631         u32 handle;
632         u32 prio;
633         unsigned int divisor;
634 };
635 
636 enum tc_clsu32_command {
637         TC_CLSU32_NEW_KNODE,
638         TC_CLSU32_REPLACE_KNODE,
639         TC_CLSU32_DELETE_KNODE,
640         TC_CLSU32_NEW_HNODE,
641         TC_CLSU32_REPLACE_HNODE,
642         TC_CLSU32_DELETE_HNODE,
643 };
644 
645 struct tc_cls_u32_offload {
646         struct tc_cls_common_offload common;
647         /* knode values */
648         enum tc_clsu32_command command;
649         union {
650                 struct tc_cls_u32_knode knode;
651                 struct tc_cls_u32_hnode hnode;
652         };
653 };
654 
655 static inline bool tc_can_offload(const struct net_device *dev)
656 {
657         return dev->features & NETIF_F_HW_TC;
658 }
659 
660 static inline bool tc_can_offload_extack(const struct net_device *dev,
661                                          struct netlink_ext_ack *extack)
662 {
663         bool can = tc_can_offload(dev);
664 
665         if (!can)
666                 NL_SET_ERR_MSG(extack, "TC offload is disabled on net device");
667 
668         return can;
669 }
670 
671 static inline bool
672 tc_cls_can_offload_and_chain0(const struct net_device *dev,
673                               struct tc_cls_common_offload *common)
674 {
675         if (!tc_can_offload_extack(dev, common->extack))
676                 return false;
677         if (common->chain_index) {
678                 NL_SET_ERR_MSG(common->extack,
679                                "Driver supports only offload of chain 0");
680                 return false;
681         }
682         return true;
683 }
684 
685 static inline bool tc_skip_hw(u32 flags)
686 {
687         return (flags & TCA_CLS_FLAGS_SKIP_HW) ? true : false;
688 }
689 
690 static inline bool tc_skip_sw(u32 flags)
691 {
692         return (flags & TCA_CLS_FLAGS_SKIP_SW) ? true : false;
693 }
694 
695 /* SKIP_HW and SKIP_SW are mutually exclusive flags. */
696 static inline bool tc_flags_valid(u32 flags)
697 {
698         if (flags & ~(TCA_CLS_FLAGS_SKIP_HW | TCA_CLS_FLAGS_SKIP_SW |
699                       TCA_CLS_FLAGS_VERBOSE))
700                 return false;
701 
702         flags &= TCA_CLS_FLAGS_SKIP_HW | TCA_CLS_FLAGS_SKIP_SW;
703         if (!(flags ^ (TCA_CLS_FLAGS_SKIP_HW | TCA_CLS_FLAGS_SKIP_SW)))
704                 return false;
705 
706         return true;
707 }
708 
709 static inline bool tc_in_hw(u32 flags)
710 {
711         return (flags & TCA_CLS_FLAGS_IN_HW) ? true : false;
712 }
713 
714 static inline void
715 tc_cls_common_offload_init(struct tc_cls_common_offload *cls_common,
716                            const struct tcf_proto *tp, u32 flags,
717                            struct netlink_ext_ack *extack)
718 {
719         cls_common->chain_index = tp->chain->index;
720         cls_common->protocol = tp->protocol;
721         cls_common->prio = tp->prio;
722         if (tc_skip_sw(flags) || flags & TCA_CLS_FLAGS_VERBOSE)
723                 cls_common->extack = extack;
724 }
725 
726 enum tc_fl_command {
727         TC_CLSFLOWER_REPLACE,
728         TC_CLSFLOWER_DESTROY,
729         TC_CLSFLOWER_STATS,
730         TC_CLSFLOWER_TMPLT_CREATE,
731         TC_CLSFLOWER_TMPLT_DESTROY,
732 };
733 
734 struct tc_cls_flower_offload {
735         struct tc_cls_common_offload common;
736         enum tc_fl_command command;
737         unsigned long cookie;
738         struct flow_dissector *dissector;
739         struct fl_flow_key *mask;
740         struct fl_flow_key *key;
741         struct tcf_exts *exts;
742         u32 classid;
743 };
744 
745 enum tc_matchall_command {
746         TC_CLSMATCHALL_REPLACE,
747         TC_CLSMATCHALL_DESTROY,
748 };
749 
750 struct tc_cls_matchall_offload {
751         struct tc_cls_common_offload common;
752         enum tc_matchall_command command;
753         struct tcf_exts *exts;
754         unsigned long cookie;
755 };
756 
757 enum tc_clsbpf_command {
758         TC_CLSBPF_OFFLOAD,
759         TC_CLSBPF_STATS,
760 };
761 
762 struct tc_cls_bpf_offload {
763         struct tc_cls_common_offload common;
764         enum tc_clsbpf_command command;
765         struct tcf_exts *exts;
766         struct bpf_prog *prog;
767         struct bpf_prog *oldprog;
768         const char *name;
769         bool exts_integrated;
770 };
771 
772 struct tc_mqprio_qopt_offload {
773         /* struct tc_mqprio_qopt must always be the first element */
774         struct tc_mqprio_qopt qopt;
775         u16 mode;
776         u16 shaper;
777         u32 flags;
778         u64 min_rate[TC_QOPT_MAX_QUEUE];
779         u64 max_rate[TC_QOPT_MAX_QUEUE];
780 };
781 
782 /* This structure holds cookie structure that is passed from user
783  * to the kernel for actions and classifiers
784  */
785 struct tc_cookie {
786         u8  *data;
787         u32 len;
788         struct rcu_head rcu;
789 };
790 
791 struct tc_qopt_offload_stats {
792         struct gnet_stats_basic_packed *bstats;
793         struct gnet_stats_queue *qstats;
794 };
795 
796 enum tc_mq_command {
797         TC_MQ_CREATE,
798         TC_MQ_DESTROY,
799         TC_MQ_STATS,
800 };
801 
802 struct tc_mq_qopt_offload {
803         enum tc_mq_command command;
804         u32 handle;
805         struct tc_qopt_offload_stats stats;
806 };
807 
808 enum tc_red_command {
809         TC_RED_REPLACE,
810         TC_RED_DESTROY,
811         TC_RED_STATS,
812         TC_RED_XSTATS,
813 };
814 
815 struct tc_red_qopt_offload_params {
816         u32 min;
817         u32 max;
818         u32 probability;
819         bool is_ecn;
820         struct gnet_stats_queue *qstats;
821 };
822 
823 struct tc_red_qopt_offload {
824         enum tc_red_command command;
825         u32 handle;
826         u32 parent;
827         union {
828                 struct tc_red_qopt_offload_params set;
829                 struct tc_qopt_offload_stats stats;
830                 struct red_stats *xstats;
831         };
832 };
833 
834 enum tc_prio_command {
835         TC_PRIO_REPLACE,
836         TC_PRIO_DESTROY,
837         TC_PRIO_STATS,
838         TC_PRIO_GRAFT,
839 };
840 
841 struct tc_prio_qopt_offload_params {
842         int bands;
843         u8 priomap[TC_PRIO_MAX + 1];
844         /* In case that a prio qdisc is offloaded and now is changed to a
845          * non-offloadedable config, it needs to update the backlog & qlen
846          * values to negate the HW backlog & qlen values (and only them).
847          */
848         struct gnet_stats_queue *qstats;
849 };
850 
851 struct tc_prio_qopt_offload_graft_params {
852         u8 band;
853         u32 child_handle;
854 };
855 
856 struct tc_prio_qopt_offload {
857         enum tc_prio_command command;
858         u32 handle;
859         u32 parent;
860         union {
861                 struct tc_prio_qopt_offload_params replace_params;
862                 struct tc_qopt_offload_stats stats;
863                 struct tc_prio_qopt_offload_graft_params graft_params;
864         };
865 };
866 
867 #endif
868 

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