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/flow_offload.h> 10 #include <net/net_namespace.h> 11 12 /* TC action not accessible from user space */ 13 #define TC_ACT_CONSUMED (TC_ACT_VALUE_MAX + 1) 14 15 /* Basic packet classifier frontend definitions. */ 16 17 struct tcf_walker { 18 int stop; 19 int skip; 20 int count; 21 bool nonempty; 22 unsigned long cookie; 23 int (*fn)(struct tcf_proto *, void *node, struct tcf_walker *); 24 }; 25 26 int register_tcf_proto_ops(struct tcf_proto_ops *ops); 27 int unregister_tcf_proto_ops(struct tcf_proto_ops *ops); 28 29 #define tc_block_offload flow_block_offload 30 #define tc_block_command flow_block_command 31 #define tcf_block_binder_type flow_block_binder_type 32 33 struct tcf_block_ext_info { 34 enum tcf_block_binder_type binder_type; 35 tcf_chain_head_change_t *chain_head_change; 36 void *chain_head_change_priv; 37 u32 block_index; 38 }; 39 40 struct tcf_block_cb; 41 bool tcf_queue_work(struct rcu_work *rwork, work_func_t func); 42 43 #ifdef CONFIG_NET_CLS 44 struct tcf_chain *tcf_chain_get_by_act(struct tcf_block *block, 45 u32 chain_index); 46 void tcf_chain_put_by_act(struct tcf_chain *chain); 47 struct tcf_chain *tcf_get_next_chain(struct tcf_block *block, 48 struct tcf_chain *chain); 49 struct tcf_proto *tcf_get_next_proto(struct tcf_chain *chain, 50 struct tcf_proto *tp, bool rtnl_held); 51 void tcf_block_netif_keep_dst(struct tcf_block *block); 52 int tcf_block_get(struct tcf_block **p_block, 53 struct tcf_proto __rcu **p_filter_chain, struct Qdisc *q, 54 struct netlink_ext_ack *extack); 55 int tcf_block_get_ext(struct tcf_block **p_block, struct Qdisc *q, 56 struct tcf_block_ext_info *ei, 57 struct netlink_ext_ack *extack); 58 void tcf_block_put(struct tcf_block *block); 59 void tcf_block_put_ext(struct tcf_block *block, struct Qdisc *q, 60 struct tcf_block_ext_info *ei); 61 62 static inline bool tcf_block_shared(struct tcf_block *block) 63 { 64 return 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 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 int __tc_indr_block_cb_register(struct net_device *dev, void *cb_priv, 90 tc_indr_block_bind_cb_t *cb, void *cb_ident); 91 int tc_indr_block_cb_register(struct net_device *dev, void *cb_priv, 92 tc_indr_block_bind_cb_t *cb, void *cb_ident); 93 void __tc_indr_block_cb_unregister(struct net_device *dev, 94 tc_indr_block_bind_cb_t *cb, void *cb_ident); 95 void tc_indr_block_cb_unregister(struct net_device *dev, 96 tc_indr_block_bind_cb_t *cb, void *cb_ident); 97 98 int tcf_classify(struct sk_buff *skb, const struct tcf_proto *tp, 99 struct tcf_result *res, bool compat_mode); 100 101 #else 102 static inline bool tcf_block_shared(struct tcf_block *block) 103 { 104 return false; 105 } 106 107 static inline 108 int tcf_block_get(struct tcf_block **p_block, 109 struct tcf_proto __rcu **p_filter_chain, struct Qdisc *q, 110 struct netlink_ext_ack *extack) 111 { 112 return 0; 113 } 114 115 static inline 116 int tcf_block_get_ext(struct tcf_block **p_block, struct Qdisc *q, 117 struct tcf_block_ext_info *ei, 118 struct netlink_ext_ack *extack) 119 { 120 return 0; 121 } 122 123 static inline void tcf_block_put(struct tcf_block *block) 124 { 125 } 126 127 static inline 128 void tcf_block_put_ext(struct tcf_block *block, struct Qdisc *q, 129 struct tcf_block_ext_info *ei) 130 { 131 } 132 133 static inline struct Qdisc *tcf_block_q(struct tcf_block *block) 134 { 135 return NULL; 136 } 137 138 static inline 139 int tc_setup_cb_block_register(struct tcf_block *block, tc_setup_cb_t *cb, 140 void *cb_priv) 141 { 142 return 0; 143 } 144 145 static inline 146 void tc_setup_cb_block_unregister(struct tcf_block *block, tc_setup_cb_t *cb, 147 void *cb_priv) 148 { 149 } 150 151 static inline 152 void *tcf_block_cb_priv(struct tcf_block_cb *block_cb) 153 { 154 return NULL; 155 } 156 157 static inline 158 struct tcf_block_cb *tcf_block_cb_lookup(struct tcf_block *block, 159 tc_setup_cb_t *cb, void *cb_ident) 160 { 161 return NULL; 162 } 163 164 static inline 165 void tcf_block_cb_incref(struct tcf_block_cb *block_cb) 166 { 167 } 168 169 static inline 170 unsigned int tcf_block_cb_decref(struct tcf_block_cb *block_cb) 171 { 172 return 0; 173 } 174 175 static inline 176 struct tcf_block_cb *__tcf_block_cb_register(struct tcf_block *block, 177 tc_setup_cb_t *cb, void *cb_ident, 178 void *cb_priv, 179 struct netlink_ext_ack *extack) 180 { 181 return NULL; 182 } 183 184 static inline 185 int tcf_block_cb_register(struct tcf_block *block, 186 tc_setup_cb_t *cb, void *cb_ident, 187 void *cb_priv, struct netlink_ext_ack *extack) 188 { 189 return 0; 190 } 191 192 static inline 193 void __tcf_block_cb_unregister(struct tcf_block *block, 194 struct tcf_block_cb *block_cb) 195 { 196 } 197 198 static inline 199 void tcf_block_cb_unregister(struct tcf_block *block, 200 tc_setup_cb_t *cb, void *cb_ident) 201 { 202 } 203 204 static inline 205 int __tc_indr_block_cb_register(struct net_device *dev, void *cb_priv, 206 tc_indr_block_bind_cb_t *cb, void *cb_ident) 207 { 208 return 0; 209 } 210 211 static inline 212 int tc_indr_block_cb_register(struct net_device *dev, void *cb_priv, 213 tc_indr_block_bind_cb_t *cb, void *cb_ident) 214 { 215 return 0; 216 } 217 218 static inline 219 void __tc_indr_block_cb_unregister(struct net_device *dev, 220 tc_indr_block_bind_cb_t *cb, void *cb_ident) 221 { 222 } 223 224 static inline 225 void tc_indr_block_cb_unregister(struct net_device *dev, 226 tc_indr_block_bind_cb_t *cb, void *cb_ident) 227 { 228 } 229 230 static inline int tcf_classify(struct sk_buff *skb, const struct tcf_proto *tp, 231 struct tcf_result *res, bool compat_mode) 232 { 233 return TC_ACT_UNSPEC; 234 } 235 #endif 236 237 static inline unsigned long 238 __cls_set_class(unsigned long *clp, unsigned long cl) 239 { 240 return xchg(clp, cl); 241 } 242 243 static inline unsigned long 244 cls_set_class(struct Qdisc *q, unsigned long *clp, unsigned long cl) 245 { 246 unsigned long old_cl; 247 248 sch_tree_lock(q); 249 old_cl = __cls_set_class(clp, cl); 250 sch_tree_unlock(q); 251 return old_cl; 252 } 253 254 static inline void 255 tcf_bind_filter(struct tcf_proto *tp, struct tcf_result *r, unsigned long base) 256 { 257 struct Qdisc *q = tp->chain->block->q; 258 unsigned long cl; 259 260 /* Check q as it is not set for shared blocks. In that case, 261 * setting class is not supported. 262 */ 263 if (!q) 264 return; 265 cl = q->ops->cl_ops->bind_tcf(q, base, r->classid); 266 cl = cls_set_class(q, &r->class, cl); 267 if (cl) 268 q->ops->cl_ops->unbind_tcf(q, cl); 269 } 270 271 static inline void 272 tcf_unbind_filter(struct tcf_proto *tp, struct tcf_result *r) 273 { 274 struct Qdisc *q = tp->chain->block->q; 275 unsigned long cl; 276 277 if (!q) 278 return; 279 if ((cl = __cls_set_class(&r->class, 0)) != 0) 280 q->ops->cl_ops->unbind_tcf(q, cl); 281 } 282 283 struct tcf_exts { 284 #ifdef CONFIG_NET_CLS_ACT 285 __u32 type; /* for backward compat(TCA_OLD_COMPAT) */ 286 int nr_actions; 287 struct tc_action **actions; 288 struct net *net; 289 #endif 290 /* Map to export classifier specific extension TLV types to the 291 * generic extensions API. Unsupported extensions must be set to 0. 292 */ 293 int action; 294 int police; 295 }; 296 297 static inline int tcf_exts_init(struct tcf_exts *exts, struct net *net, 298 int action, int police) 299 { 300 #ifdef CONFIG_NET_CLS_ACT 301 exts->type = 0; 302 exts->nr_actions = 0; 303 exts->net = net; 304 exts->actions = kcalloc(TCA_ACT_MAX_PRIO, sizeof(struct tc_action *), 305 GFP_KERNEL); 306 if (!exts->actions) 307 return -ENOMEM; 308 #endif 309 exts->action = action; 310 exts->police = police; 311 return 0; 312 } 313 314 /* Return false if the netns is being destroyed in cleanup_net(). Callers 315 * need to do cleanup synchronously in this case, otherwise may race with 316 * tc_action_net_exit(). Return true for other cases. 317 */ 318 static inline bool tcf_exts_get_net(struct tcf_exts *exts) 319 { 320 #ifdef CONFIG_NET_CLS_ACT 321 exts->net = maybe_get_net(exts->net); 322 return exts->net != NULL; 323 #else 324 return true; 325 #endif 326 } 327 328 static inline void tcf_exts_put_net(struct tcf_exts *exts) 329 { 330 #ifdef CONFIG_NET_CLS_ACT 331 if (exts->net) 332 put_net(exts->net); 333 #endif 334 } 335 336 #ifdef CONFIG_NET_CLS_ACT 337 #define tcf_exts_for_each_action(i, a, exts) \ 338 for (i = 0; i < TCA_ACT_MAX_PRIO && ((a) = (exts)->actions[i]); i++) 339 #else 340 #define tcf_exts_for_each_action(i, a, exts) \ 341 for (; 0; (void)(i), (void)(a), (void)(exts)) 342 #endif 343 344 static inline void 345 tcf_exts_stats_update(const struct tcf_exts *exts, 346 u64 bytes, u64 packets, u64 lastuse) 347 { 348 #ifdef CONFIG_NET_CLS_ACT 349 int i; 350 351 preempt_disable(); 352 353 for (i = 0; i < exts->nr_actions; i++) { 354 struct tc_action *a = exts->actions[i]; 355 356 tcf_action_stats_update(a, bytes, packets, lastuse, true); 357 } 358 359 preempt_enable(); 360 #endif 361 } 362 363 /** 364 * tcf_exts_has_actions - check if at least one action is present 365 * @exts: tc filter extensions handle 366 * 367 * Returns true if at least one action is present. 368 */ 369 static inline bool tcf_exts_has_actions(struct tcf_exts *exts) 370 { 371 #ifdef CONFIG_NET_CLS_ACT 372 return exts->nr_actions; 373 #else 374 return false; 375 #endif 376 } 377 378 /** 379 * tcf_exts_exec - execute tc filter extensions 380 * @skb: socket buffer 381 * @exts: tc filter extensions handle 382 * @res: desired result 383 * 384 * Executes all configured extensions. Returns TC_ACT_OK on a normal execution, 385 * a negative number if the filter must be considered unmatched or 386 * a positive action code (TC_ACT_*) which must be returned to the 387 * underlying layer. 388 */ 389 static inline int 390 tcf_exts_exec(struct sk_buff *skb, struct tcf_exts *exts, 391 struct tcf_result *res) 392 { 393 #ifdef CONFIG_NET_CLS_ACT 394 return tcf_action_exec(skb, exts->actions, exts->nr_actions, res); 395 #endif 396 return TC_ACT_OK; 397 } 398 399 int tcf_exts_validate(struct net *net, struct tcf_proto *tp, 400 struct nlattr **tb, struct nlattr *rate_tlv, 401 struct tcf_exts *exts, bool ovr, bool rtnl_held, 402 struct netlink_ext_ack *extack); 403 void tcf_exts_destroy(struct tcf_exts *exts); 404 void tcf_exts_change(struct tcf_exts *dst, struct tcf_exts *src); 405 int tcf_exts_dump(struct sk_buff *skb, struct tcf_exts *exts); 406 int tcf_exts_dump_stats(struct sk_buff *skb, struct tcf_exts *exts); 407 408 /** 409 * struct tcf_pkt_info - packet information 410 */ 411 struct tcf_pkt_info { 412 unsigned char * ptr; 413 int nexthdr; 414 }; 415 416 #ifdef CONFIG_NET_EMATCH 417 418 struct tcf_ematch_ops; 419 420 /** 421 * struct tcf_ematch - extended match (ematch) 422 * 423 * @matchid: identifier to allow userspace to reidentify a match 424 * @flags: flags specifying attributes and the relation to other matches 425 * @ops: the operations lookup table of the corresponding ematch module 426 * @datalen: length of the ematch specific configuration data 427 * @data: ematch specific data 428 */ 429 struct tcf_ematch { 430 struct tcf_ematch_ops * ops; 431 unsigned long data; 432 unsigned int datalen; 433 u16 matchid; 434 u16 flags; 435 struct net *net; 436 }; 437 438 static inline int tcf_em_is_container(struct tcf_ematch *em) 439 { 440 return !em->ops; 441 } 442 443 static inline int tcf_em_is_simple(struct tcf_ematch *em) 444 { 445 return em->flags & TCF_EM_SIMPLE; 446 } 447 448 static inline int tcf_em_is_inverted(struct tcf_ematch *em) 449 { 450 return em->flags & TCF_EM_INVERT; 451 } 452 453 static inline int tcf_em_last_match(struct tcf_ematch *em) 454 { 455 return (em->flags & TCF_EM_REL_MASK) == TCF_EM_REL_END; 456 } 457 458 static inline int tcf_em_early_end(struct tcf_ematch *em, int result) 459 { 460 if (tcf_em_last_match(em)) 461 return 1; 462 463 if (result == 0 && em->flags & TCF_EM_REL_AND) 464 return 1; 465 466 if (result != 0 && em->flags & TCF_EM_REL_OR) 467 return 1; 468 469 return 0; 470 } 471 472 /** 473 * struct tcf_ematch_tree - ematch tree handle 474 * 475 * @hdr: ematch tree header supplied by userspace 476 * @matches: array of ematches 477 */ 478 struct tcf_ematch_tree { 479 struct tcf_ematch_tree_hdr hdr; 480 struct tcf_ematch * matches; 481 482 }; 483 484 /** 485 * struct tcf_ematch_ops - ematch module operations 486 * 487 * @kind: identifier (kind) of this ematch module 488 * @datalen: length of expected configuration data (optional) 489 * @change: called during validation (optional) 490 * @match: called during ematch tree evaluation, must return 1/0 491 * @destroy: called during destroyage (optional) 492 * @dump: called during dumping process (optional) 493 * @owner: owner, must be set to THIS_MODULE 494 * @link: link to previous/next ematch module (internal use) 495 */ 496 struct tcf_ematch_ops { 497 int kind; 498 int datalen; 499 int (*change)(struct net *net, void *, 500 int, struct tcf_ematch *); 501 int (*match)(struct sk_buff *, struct tcf_ematch *, 502 struct tcf_pkt_info *); 503 void (*destroy)(struct tcf_ematch *); 504 int (*dump)(struct sk_buff *, struct tcf_ematch *); 505 struct module *owner; 506 struct list_head link; 507 }; 508 509 int tcf_em_register(struct tcf_ematch_ops *); 510 void tcf_em_unregister(struct tcf_ematch_ops *); 511 int tcf_em_tree_validate(struct tcf_proto *, struct nlattr *, 512 struct tcf_ematch_tree *); 513 void tcf_em_tree_destroy(struct tcf_ematch_tree *); 514 int tcf_em_tree_dump(struct sk_buff *, struct tcf_ematch_tree *, int); 515 int __tcf_em_tree_match(struct sk_buff *, struct tcf_ematch_tree *, 516 struct tcf_pkt_info *); 517 518 /** 519 * tcf_em_tree_match - evaulate an ematch tree 520 * 521 * @skb: socket buffer of the packet in question 522 * @tree: ematch tree to be used for evaluation 523 * @info: packet information examined by classifier 524 * 525 * This function matches @skb against the ematch tree in @tree by going 526 * through all ematches respecting their logic relations returning 527 * as soon as the result is obvious. 528 * 529 * Returns 1 if the ematch tree as-one matches, no ematches are configured 530 * or ematch is not enabled in the kernel, otherwise 0 is returned. 531 */ 532 static inline int tcf_em_tree_match(struct sk_buff *skb, 533 struct tcf_ematch_tree *tree, 534 struct tcf_pkt_info *info) 535 { 536 if (tree->hdr.nmatches) 537 return __tcf_em_tree_match(skb, tree, info); 538 else 539 return 1; 540 } 541 542 #define MODULE_ALIAS_TCF_EMATCH(kind) MODULE_ALIAS("ematch-kind-" __stringify(kind)) 543 544 #else /* CONFIG_NET_EMATCH */ 545 546 struct tcf_ematch_tree { 547 }; 548 549 #define tcf_em_tree_validate(tp, tb, t) ((void)(t), 0) 550 #define tcf_em_tree_destroy(t) do { (void)(t); } while(0) 551 #define tcf_em_tree_dump(skb, t, tlv) (0) 552 #define tcf_em_tree_match(skb, t, info) ((void)(info), 1) 553 554 #endif /* CONFIG_NET_EMATCH */ 555 556 static inline unsigned char * tcf_get_base_ptr(struct sk_buff *skb, int layer) 557 { 558 switch (layer) { 559 case TCF_LAYER_LINK: 560 return skb_mac_header(skb); 561 case TCF_LAYER_NETWORK: 562 return skb_network_header(skb); 563 case TCF_LAYER_TRANSPORT: 564 return skb_transport_header(skb); 565 } 566 567 return NULL; 568 } 569 570 static inline int tcf_valid_offset(const struct sk_buff *skb, 571 const unsigned char *ptr, const int len) 572 { 573 return likely((ptr + len) <= skb_tail_pointer(skb) && 574 ptr >= skb->head && 575 (ptr <= (ptr + len))); 576 } 577 578 static inline int 579 tcf_change_indev(struct net *net, struct nlattr *indev_tlv, 580 struct netlink_ext_ack *extack) 581 { 582 char indev[IFNAMSIZ]; 583 struct net_device *dev; 584 585 if (nla_strlcpy(indev, indev_tlv, IFNAMSIZ) >= IFNAMSIZ) { 586 NL_SET_ERR_MSG(extack, "Interface name too long"); 587 return -EINVAL; 588 } 589 dev = __dev_get_by_name(net, indev); 590 if (!dev) 591 return -ENODEV; 592 return dev->ifindex; 593 } 594 595 static inline bool 596 tcf_match_indev(struct sk_buff *skb, int ifindex) 597 { 598 if (!ifindex) 599 return true; 600 if (!skb->skb_iif) 601 return false; 602 return ifindex == skb->skb_iif; 603 } 604 605 int tc_setup_flow_action(struct flow_action *flow_action, 606 const struct tcf_exts *exts); 607 int tc_setup_cb_call(struct tcf_block *block, enum tc_setup_type type, 608 void *type_data, bool err_stop); 609 unsigned int tcf_exts_num_actions(struct tcf_exts *exts); 610 611 struct tc_cls_common_offload { 612 u32 chain_index; 613 __be16 protocol; 614 u32 prio; 615 struct netlink_ext_ack *extack; 616 }; 617 618 struct tc_cls_u32_knode { 619 struct tcf_exts *exts; 620 struct tcf_result *res; 621 struct tc_u32_sel *sel; 622 u32 handle; 623 u32 val; 624 u32 mask; 625 u32 link_handle; 626 u8 fshift; 627 }; 628 629 struct tc_cls_u32_hnode { 630 u32 handle; 631 u32 prio; 632 unsigned int divisor; 633 }; 634 635 enum tc_clsu32_command { 636 TC_CLSU32_NEW_KNODE, 637 TC_CLSU32_REPLACE_KNODE, 638 TC_CLSU32_DELETE_KNODE, 639 TC_CLSU32_NEW_HNODE, 640 TC_CLSU32_REPLACE_HNODE, 641 TC_CLSU32_DELETE_HNODE, 642 }; 643 644 struct tc_cls_u32_offload { 645 struct tc_cls_common_offload common; 646 /* knode values */ 647 enum tc_clsu32_command command; 648 union { 649 struct tc_cls_u32_knode knode; 650 struct tc_cls_u32_hnode hnode; 651 }; 652 }; 653 654 static inline bool tc_can_offload(const struct net_device *dev) 655 { 656 return dev->features & NETIF_F_HW_TC; 657 } 658 659 static inline bool tc_can_offload_extack(const struct net_device *dev, 660 struct netlink_ext_ack *extack) 661 { 662 bool can = tc_can_offload(dev); 663 664 if (!can) 665 NL_SET_ERR_MSG(extack, "TC offload is disabled on net device"); 666 667 return can; 668 } 669 670 static inline bool 671 tc_cls_can_offload_and_chain0(const struct net_device *dev, 672 struct tc_cls_common_offload *common) 673 { 674 if (!tc_can_offload_extack(dev, common->extack)) 675 return false; 676 if (common->chain_index) { 677 NL_SET_ERR_MSG(common->extack, 678 "Driver supports only offload of chain 0"); 679 return false; 680 } 681 return true; 682 } 683 684 static inline bool tc_skip_hw(u32 flags) 685 { 686 return (flags & TCA_CLS_FLAGS_SKIP_HW) ? true : false; 687 } 688 689 static inline bool tc_skip_sw(u32 flags) 690 { 691 return (flags & TCA_CLS_FLAGS_SKIP_SW) ? true : false; 692 } 693 694 /* SKIP_HW and SKIP_SW are mutually exclusive flags. */ 695 static inline bool tc_flags_valid(u32 flags) 696 { 697 if (flags & ~(TCA_CLS_FLAGS_SKIP_HW | TCA_CLS_FLAGS_SKIP_SW | 698 TCA_CLS_FLAGS_VERBOSE)) 699 return false; 700 701 flags &= TCA_CLS_FLAGS_SKIP_HW | TCA_CLS_FLAGS_SKIP_SW; 702 if (!(flags ^ (TCA_CLS_FLAGS_SKIP_HW | TCA_CLS_FLAGS_SKIP_SW))) 703 return false; 704 705 return true; 706 } 707 708 static inline bool tc_in_hw(u32 flags) 709 { 710 return (flags & TCA_CLS_FLAGS_IN_HW) ? true : false; 711 } 712 713 static inline void 714 tc_cls_common_offload_init(struct tc_cls_common_offload *cls_common, 715 const struct tcf_proto *tp, u32 flags, 716 struct netlink_ext_ack *extack) 717 { 718 cls_common->chain_index = tp->chain->index; 719 cls_common->protocol = tp->protocol; 720 cls_common->prio = tp->prio; 721 if (tc_skip_sw(flags) || flags & TCA_CLS_FLAGS_VERBOSE) 722 cls_common->extack = extack; 723 } 724 725 enum tc_fl_command { 726 TC_CLSFLOWER_REPLACE, 727 TC_CLSFLOWER_DESTROY, 728 TC_CLSFLOWER_STATS, 729 TC_CLSFLOWER_TMPLT_CREATE, 730 TC_CLSFLOWER_TMPLT_DESTROY, 731 }; 732 733 struct tc_cls_flower_offload { 734 struct tc_cls_common_offload common; 735 enum tc_fl_command command; 736 unsigned long cookie; 737 struct flow_rule *rule; 738 struct flow_stats stats; 739 u32 classid; 740 }; 741 742 static inline struct flow_rule * 743 tc_cls_flower_offload_flow_rule(struct tc_cls_flower_offload *tc_flow_cmd) 744 { 745 return tc_flow_cmd->rule; 746 } 747 748 enum tc_matchall_command { 749 TC_CLSMATCHALL_REPLACE, 750 TC_CLSMATCHALL_DESTROY, 751 TC_CLSMATCHALL_STATS, 752 }; 753 754 struct tc_cls_matchall_offload { 755 struct tc_cls_common_offload common; 756 enum tc_matchall_command command; 757 struct flow_rule *rule; 758 struct flow_stats stats; 759 unsigned long cookie; 760 }; 761 762 enum tc_clsbpf_command { 763 TC_CLSBPF_OFFLOAD, 764 TC_CLSBPF_STATS, 765 }; 766 767 struct tc_cls_bpf_offload { 768 struct tc_cls_common_offload common; 769 enum tc_clsbpf_command command; 770 struct tcf_exts *exts; 771 struct bpf_prog *prog; 772 struct bpf_prog *oldprog; 773 const char *name; 774 bool exts_integrated; 775 }; 776 777 struct tc_mqprio_qopt_offload { 778 /* struct tc_mqprio_qopt must always be the first element */ 779 struct tc_mqprio_qopt qopt; 780 u16 mode; 781 u16 shaper; 782 u32 flags; 783 u64 min_rate[TC_QOPT_MAX_QUEUE]; 784 u64 max_rate[TC_QOPT_MAX_QUEUE]; 785 }; 786 787 /* This structure holds cookie structure that is passed from user 788 * to the kernel for actions and classifiers 789 */ 790 struct tc_cookie { 791 u8 *data; 792 u32 len; 793 struct rcu_head rcu; 794 }; 795 796 struct tc_qopt_offload_stats { 797 struct gnet_stats_basic_packed *bstats; 798 struct gnet_stats_queue *qstats; 799 }; 800 801 enum tc_mq_command { 802 TC_MQ_CREATE, 803 TC_MQ_DESTROY, 804 TC_MQ_STATS, 805 TC_MQ_GRAFT, 806 }; 807 808 struct tc_mq_opt_offload_graft_params { 809 unsigned long queue; 810 u32 child_handle; 811 }; 812 813 struct tc_mq_qopt_offload { 814 enum tc_mq_command command; 815 u32 handle; 816 union { 817 struct tc_qopt_offload_stats stats; 818 struct tc_mq_opt_offload_graft_params graft_params; 819 }; 820 }; 821 822 enum tc_red_command { 823 TC_RED_REPLACE, 824 TC_RED_DESTROY, 825 TC_RED_STATS, 826 TC_RED_XSTATS, 827 TC_RED_GRAFT, 828 }; 829 830 struct tc_red_qopt_offload_params { 831 u32 min; 832 u32 max; 833 u32 probability; 834 u32 limit; 835 bool is_ecn; 836 bool is_harddrop; 837 struct gnet_stats_queue *qstats; 838 }; 839 840 struct tc_red_qopt_offload { 841 enum tc_red_command command; 842 u32 handle; 843 u32 parent; 844 union { 845 struct tc_red_qopt_offload_params set; 846 struct tc_qopt_offload_stats stats; 847 struct red_stats *xstats; 848 u32 child_handle; 849 }; 850 }; 851 852 enum tc_gred_command { 853 TC_GRED_REPLACE, 854 TC_GRED_DESTROY, 855 TC_GRED_STATS, 856 }; 857 858 struct tc_gred_vq_qopt_offload_params { 859 bool present; 860 u32 limit; 861 u32 prio; 862 u32 min; 863 u32 max; 864 bool is_ecn; 865 bool is_harddrop; 866 u32 probability; 867 /* Only need backlog, see struct tc_prio_qopt_offload_params */ 868 u32 *backlog; 869 }; 870 871 struct tc_gred_qopt_offload_params { 872 bool grio_on; 873 bool wred_on; 874 unsigned int dp_cnt; 875 unsigned int dp_def; 876 struct gnet_stats_queue *qstats; 877 struct tc_gred_vq_qopt_offload_params tab[MAX_DPs]; 878 }; 879 880 struct tc_gred_qopt_offload_stats { 881 struct gnet_stats_basic_packed bstats[MAX_DPs]; 882 struct gnet_stats_queue qstats[MAX_DPs]; 883 struct red_stats *xstats[MAX_DPs]; 884 }; 885 886 struct tc_gred_qopt_offload { 887 enum tc_gred_command command; 888 u32 handle; 889 u32 parent; 890 union { 891 struct tc_gred_qopt_offload_params set; 892 struct tc_gred_qopt_offload_stats stats; 893 }; 894 }; 895 896 enum tc_prio_command { 897 TC_PRIO_REPLACE, 898 TC_PRIO_DESTROY, 899 TC_PRIO_STATS, 900 TC_PRIO_GRAFT, 901 }; 902 903 struct tc_prio_qopt_offload_params { 904 int bands; 905 u8 priomap[TC_PRIO_MAX + 1]; 906 /* In case that a prio qdisc is offloaded and now is changed to a 907 * non-offloadedable config, it needs to update the backlog & qlen 908 * values to negate the HW backlog & qlen values (and only them). 909 */ 910 struct gnet_stats_queue *qstats; 911 }; 912 913 struct tc_prio_qopt_offload_graft_params { 914 u8 band; 915 u32 child_handle; 916 }; 917 918 struct tc_prio_qopt_offload { 919 enum tc_prio_command command; 920 u32 handle; 921 u32 parent; 922 union { 923 struct tc_prio_qopt_offload_params replace_params; 924 struct tc_qopt_offload_stats stats; 925 struct tc_prio_qopt_offload_graft_params graft_params; 926 }; 927 }; 928 929 enum tc_root_command { 930 TC_ROOT_GRAFT, 931 }; 932 933 struct tc_root_qopt_offload { 934 enum tc_root_command command; 935 u32 handle; 936 bool ingress; 937 }; 938 939 #endif 940