include/net/pkt_cls.h

   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 unsigned long
 145 cls_set_class(struct Qdisc *q, unsigned long *clp, unsigned long cl)
 146 {
 147         unsigned long old_cl;
 148
 149         sch_tree_lock(q);
 150         old_cl = __cls_set_class(clp, cl);
 151         sch_tree_unlock(q);
 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 {
 158         struct Qdisc *q = tp->chain->block->q;
 159         unsigned long cl;
 160
 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);
 168         if (cl)
 169                 q->ops->cl_ops->unbind_tcf(q, cl);
 170 }
 171
 172 static inline void
 173 tcf_unbind_filter(struct tcf_proto *tp, struct tcf_result *r)
 174 {
 175         struct Qdisc *q = tp->chain->block->q;
 176         unsigned long cl;
 177
 178         if (!q)
 179                 return;
 180         if ((cl = __cls_set_class(&r->class, 0)) != 0)
 181                 q->ops->cl_ops->unbind_tcf(q, cl);
 182 }
 183
 184 struct tcf_exts {
 185 #ifdef CONFIG_NET_CLS_ACT
 186         __u32   type; /* for backward compat(TCA_OLD_COMPAT) */
 187         int nr_actions;
 188         struct tc_action **actions;
 189         struct net *net;
 190 #endif
 191         /* Map to export classifier specific extension TLV types to the
 192          * generic extensions API. Unsupported extensions must be set to 0.
 193          */
 194         int action;
 195         int police;
 196 };
 197
 198 static inline int tcf_exts_init(struct tcf_exts *exts, struct net *net,
 199                                 int action, int police)
 200 {
 201 #ifdef CONFIG_NET_CLS_ACT
 202         exts->type = 0;
 203         exts->nr_actions = 0;
 204         exts->net = net;
 205         exts->actions = kcalloc(TCA_ACT_MAX_PRIO, sizeof(struct tc_action *),
 206                                 GFP_KERNEL);
 207         if (!exts->actions)
 208                 return -ENOMEM;
 209 #endif
 210         exts->action = action;
 211         exts->police = police;
 212         return 0;
 213 }
 214
 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
 237 #ifdef CONFIG_NET_CLS_ACT
 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) \
 242         for (; 0; (void)(i), (void)(a), (void)(exts))
 243 #endif
 244
 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
 257                 tcf_action_stats_update(a, bytes, packets, lastuse, true);
 258         }
 259
 260         preempt_enable();
 261 #endif
 262 }
 263
 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 {
 272 #ifdef CONFIG_NET_CLS_ACT
 273         return exts->nr_actions;
 274 #else
 275         return false;
 276 #endif
 277 }
 278
 279 /**
 280  * tcf_exts_exec - execute tc filter extensions
 281  * @skb: socket buffer
 282  * @exts: tc filter extensions handle
 283  * @res: desired result
 284  *
 285  * Executes all configured extensions. Returns TC_ACT_OK on a normal execution,
 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
 295         return tcf_action_exec(skb, exts->actions, exts->nr_actions, res);
 296 #endif
 297         return TC_ACT_OK;
 298 }
 299
 300 int tcf_exts_validate(struct net *net, struct tcf_proto *tp,
 301                       struct nlattr **tb, struct nlattr *rate_tlv,
 302                       struct tcf_exts *exts, bool ovr, bool rtnl_held,
 303                       struct netlink_ext_ack *extack);
 304 void tcf_exts_destroy(struct tcf_exts *exts);
 305 void tcf_exts_change(struct tcf_exts *dst, struct tcf_exts *src);
 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);
 308
 309 /**
 310  * struct tcf_pkt_info - packet information
 311  */
 312 struct tcf_pkt_info {
 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  */
 330 struct tcf_ematch {
 331         struct tcf_ematch_ops * ops;
 332         unsigned long           data;
 333         unsigned int            datalen;
 334         u16                     matchid;
 335         u16                     flags;
 336         struct net              *net;
 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  */
 379 struct tcf_ematch_tree {
 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  */
 397 struct tcf_ematch_ops {
 398         int                     kind;
 399         int                     datalen;
 400         int                     (*change)(struct net *net, void *,
 401                                           int, struct tcf_ematch *);
 402         int                     (*match)(struct sk_buff *, struct tcf_ematch *,
 403                                          struct tcf_pkt_info *);
 404         void                    (*destroy)(struct tcf_ematch *);
 405         int                     (*dump)(struct sk_buff *, struct tcf_ematch *);
 406         struct module           *owner;
 407         struct list_head        link;
 408 };
 409
 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 *);
 414 void tcf_em_tree_destroy(struct tcf_ematch_tree *);
 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 *);
 418
 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
 443 #define MODULE_ALIAS_TCF_EMATCH(kind)   MODULE_ALIAS("ematch-kind-" __stringify(kind))
 444
 445 #else /* CONFIG_NET_EMATCH */
 446
 447 struct tcf_ematch_tree {
 448 };
 449
 450 #define tcf_em_tree_validate(tp, tb, t) ((void)(t), 0)
 451 #define tcf_em_tree_destroy(t) do { (void)(t); } while(0)
 452 #define tcf_em_tree_dump(skb, t, tlv) (0)
 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:
 461                         return skb_mac_header(skb);
 462                 case TCF_LAYER_NETWORK:
 463                         return skb_network_header(skb);
 464                 case TCF_LAYER_TRANSPORT:
 465                         return skb_transport_header(skb);
 466         }
 467
 468         return NULL;
 469 }
 470
 471 static inline int tcf_valid_offset(const struct sk_buff *skb,
 472                                    const unsigned char *ptr, const int len)
 473 {
 474         return likely((ptr + len) <= skb_tail_pointer(skb) &&
 475                       ptr >= skb->head &&
 476                       (ptr <= (ptr + len)));
 477 }
 478
 479 static inline int
 480 tcf_change_indev(struct net *net, struct nlattr *indev_tlv,
 481                  struct netlink_ext_ack *extack)
 482 {
 483         char indev[IFNAMSIZ];
 484         struct net_device *dev;
 485
 486         if (nla_strlcpy(indev, indev_tlv, IFNAMSIZ) >= IFNAMSIZ) {
 487                 NL_SET_ERR_MSG(extack, "Interface name too long");
 488                 return -EINVAL;
 489         }
 490         dev = __dev_get_by_name(net, indev);
 491         if (!dev)
 492                 return -ENODEV;
 493         return dev->ifindex;
 494 }
 495
 496 static inline bool
 497 tcf_match_indev(struct sk_buff *skb, int ifindex)
 498 {
 499         if (!ifindex)
 500                 return true;
 501         if  (!skb->skb_iif)
 502                 return false;
 503         return ifindex == skb->skb_iif;
 504 }
 505
 506 int tc_setup_flow_action(struct flow_action *flow_action,
 507                          const struct tcf_exts *exts, bool rtnl_held);
 508 void tc_cleanup_flow_action(struct flow_action *flow_action);
 509
 510 int tc_setup_cb_call(struct tcf_block *block, enum tc_setup_type type,
 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);
 527 unsigned int tcf_exts_num_actions(struct tcf_exts *exts);
 528
 529 struct tc_cls_u32_knode {
 530         struct tcf_exts *exts;
 531         struct tcf_result *res;
 532         struct tc_u32_sel *sel;
 533         u32 handle;
 534         u32 val;
 535         u32 mask;
 536         u32 link_handle;
 537         u8 fshift;
 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 {
 556         struct flow_cls_common_offload common;
 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
 565 static inline bool tc_can_offload(const struct net_device *dev)
 566 {
 567         return dev->features & NETIF_F_HW_TC;
 568 }
 569
 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
 581 static inline bool
 582 tc_cls_can_offload_and_chain0(const struct net_device *dev,
 583                               struct flow_cls_common_offload *common)
 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
 595 static inline bool tc_skip_hw(u32 flags)
 596 {
 597         return (flags & TCA_CLS_FLAGS_SKIP_HW) ? true : false;
 598 }
 599
 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 {
 608         if (flags & ~(TCA_CLS_FLAGS_SKIP_HW | TCA_CLS_FLAGS_SKIP_SW |
 609                       TCA_CLS_FLAGS_VERBOSE))
 610                 return false;
 611
 612         flags &= TCA_CLS_FLAGS_SKIP_HW | TCA_CLS_FLAGS_SKIP_SW;
 613         if (!(flags ^ (TCA_CLS_FLAGS_SKIP_HW | TCA_CLS_FLAGS_SKIP_SW)))
 614                 return false;
 615
 616         return true;
 617 }
 618
 619 static inline bool tc_in_hw(u32 flags)
 620 {
 621         return (flags & TCA_CLS_FLAGS_IN_HW) ? true : false;
 622 }
 623
 624 static inline void
 625 tc_cls_common_offload_init(struct flow_cls_common_offload *cls_common,
 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;
 631         cls_common->prio = tp->prio >> 16;
 632         if (tc_skip_sw(flags) || flags & TCA_CLS_FLAGS_VERBOSE)
 633                 cls_common->extack = extack;
 634 }
 635
 636 enum tc_matchall_command {
 637         TC_CLSMATCHALL_REPLACE,
 638         TC_CLSMATCHALL_DESTROY,
 639         TC_CLSMATCHALL_STATS,
 640 };
 641
 642 struct tc_cls_matchall_offload {
 643         struct flow_cls_common_offload common;
 644         enum tc_matchall_command command;
 645         struct flow_rule *rule;
 646         struct flow_stats stats;
 647         unsigned long cookie;
 648 };
 649
 650 enum tc_clsbpf_command {
 651         TC_CLSBPF_OFFLOAD,
 652         TC_CLSBPF_STATS,
 653 };
 654
 655 struct tc_cls_bpf_offload {
 656         struct flow_cls_common_offload common;
 657         enum tc_clsbpf_command command;
 658         struct tcf_exts *exts;
 659         struct bpf_prog *prog;
 660         struct bpf_prog *oldprog;
 661         const char *name;
 662         bool exts_integrated;
 663 };
 664
 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 };
 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;
 681         struct rcu_head rcu;
 682 };
 683
 684 struct tc_qopt_offload_stats {
 685         struct gnet_stats_basic_packed *bstats;
 686         struct gnet_stats_queue *qstats;
 687 };
 688
 689 enum tc_mq_command {
 690         TC_MQ_CREATE,
 691         TC_MQ_DESTROY,
 692         TC_MQ_STATS,
 693         TC_MQ_GRAFT,
 694 };
 695
 696 struct tc_mq_opt_offload_graft_params {
 697         unsigned long queue;
 698         u32 child_handle;
 699 };
 700
 701 struct tc_mq_qopt_offload {
 702         enum tc_mq_command command;
 703         u32 handle;
 704         union {
 705                 struct tc_qopt_offload_stats stats;
 706                 struct tc_mq_opt_offload_graft_params graft_params;
 707         };
 708 };
 709
 710 enum tc_red_command {
 711         TC_RED_REPLACE,
 712         TC_RED_DESTROY,
 713         TC_RED_STATS,
 714         TC_RED_XSTATS,
 715         TC_RED_GRAFT,
 716 };
 717
 718 struct tc_red_qopt_offload_params {
 719         u32 min;
 720         u32 max;
 721         u32 probability;
 722         u32 limit;
 723         bool is_ecn;
 724         bool is_harddrop;
 725         struct gnet_stats_queue *qstats;
 726 };
 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;
 734                 struct tc_qopt_offload_stats stats;
 735                 struct red_stats *xstats;
 736                 u32 child_handle;
 737         };
 738 };
 739
 740 enum tc_gred_command {
 741         TC_GRED_REPLACE,
 742         TC_GRED_DESTROY,
 743         TC_GRED_STATS,
 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
 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
 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;
 780                 struct tc_gred_qopt_offload_stats stats;
 781         };
 782 };
 783
 784 enum tc_prio_command {
 785         TC_PRIO_REPLACE,
 786         TC_PRIO_DESTROY,
 787         TC_PRIO_STATS,
 788         TC_PRIO_GRAFT,
 789 };
 790
 791 struct tc_prio_qopt_offload_params {
 792         int bands;
 793         u8 priomap[TC_PRIO_MAX + 1];
 794         /* In case that a prio qdisc is offloaded and now is changed to a
 795          * non-offloadedable config, it needs to update the backlog & qlen
 796          * values to negate the HW backlog & qlen values (and only them).
 797          */
 798         struct gnet_stats_queue *qstats;
 799 };
 800
 801 struct tc_prio_qopt_offload_graft_params {
 802         u8 band;
 803         u32 child_handle;
 804 };
 805
 806 struct tc_prio_qopt_offload {
 807         enum tc_prio_command command;
 808         u32 handle;
 809         u32 parent;
 810         union {
 811                 struct tc_prio_qopt_offload_params replace_params;
 812                 struct tc_qopt_offload_stats stats;
 813                 struct tc_prio_qopt_offload_graft_params graft_params;
 814         };
 815 };
 816
 817 enum tc_root_command {
 818         TC_ROOT_GRAFT,
 819 };
 820
 821 struct tc_root_qopt_offload {
 822         enum tc_root_command command;
 823         u32 handle;
 824         bool ingress;
 825 };
 826
 827 #endif