include/net/pkt

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

INCLUDED FROM

DEFINITIONS
