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_qevent { 36 struct tcf_block *block; 37 struct tcf_block_ext_info info; 38 struct tcf_proto __rcu *filter_chain; 39 }; 40 41 struct tcf_block_cb; 42 bool tcf_queue_work(struct rcu_work *rwork, work_func_t func); 43 44 #ifdef CONFIG_NET_CLS 45 struct tcf_chain *tcf_chain_get_by_act(struct tcf_block *block, 46 u32 chain_index); 47 void tcf_chain_put_by_act(struct tcf_chain *chain); 48 struct tcf_chain *tcf_get_next_chain(struct tcf_block *block, 49 struct tcf_chain *chain); 50 struct tcf_proto *tcf_get_next_proto(struct tcf_chain *chain, 51 struct tcf_proto *tp); 52 void tcf_block_netif_keep_dst(struct tcf_block *block); 53 int tcf_block_get(struct tcf_block **p_block, 54 struct tcf_proto __rcu **p_filter_chain, struct Qdisc *q, 55 struct netlink_ext_ack *extack); 56 int tcf_block_get_ext(struct tcf_block **p_block, struct Qdisc *q, 57 struct tcf_block_ext_info *ei, 58 struct netlink_ext_ack *extack); 59 void tcf_block_put(struct tcf_block *block); 60 void tcf_block_put_ext(struct tcf_block *block, struct Qdisc *q, 61 struct tcf_block_ext_info *ei); 62 63 static inline bool tcf_block_shared(struct tcf_block *block) 64 { 65 return block->index; 66 } 67 68 static inline bool tcf_block_non_null_shared(struct tcf_block *block) 69 { 70 return block && block->index; 71 } 72 73 static inline struct Qdisc *tcf_block_q(struct tcf_block *block) 74 { 75 WARN_ON(tcf_block_shared(block)); 76 return block->q; 77 } 78 79 int tcf_classify(struct sk_buff *skb, 80 const struct tcf_block *block, 81 const struct tcf_proto *tp, struct tcf_result *res, 82 bool compat_mode); 83 84 #else 85 static inline bool tcf_block_shared(struct tcf_block *block) 86 { 87 return false; 88 } 89 90 static inline bool tcf_block_non_null_shared(struct tcf_block *block) 91 { 92 return false; 93 } 94 95 static inline 96 int tcf_block_get(struct tcf_block **p_block, 97 struct tcf_proto __rcu **p_filter_chain, struct Qdisc *q, 98 struct netlink_ext_ack *extack) 99 { 100 return 0; 101 } 102 103 static inline 104 int tcf_block_get_ext(struct tcf_block **p_block, struct Qdisc *q, 105 struct tcf_block_ext_info *ei, 106 struct netlink_ext_ack *extack) 107 { 108 return 0; 109 } 110 111 static inline void tcf_block_put(struct tcf_block *block) 112 { 113 } 114 115 static inline 116 void tcf_block_put_ext(struct tcf_block *block, struct Qdisc *q, 117 struct tcf_block_ext_info *ei) 118 { 119 } 120 121 static inline struct Qdisc *tcf_block_q(struct tcf_block *block) 122 { 123 return NULL; 124 } 125 126 static inline 127 int tc_setup_cb_block_register(struct tcf_block *block, flow_setup_cb_t *cb, 128 void *cb_priv) 129 { 130 return 0; 131 } 132 133 static inline 134 void tc_setup_cb_block_unregister(struct tcf_block *block, flow_setup_cb_t *cb, 135 void *cb_priv) 136 { 137 } 138 139 static inline int tcf_classify(struct sk_buff *skb, 140 const struct tcf_block *block, 141 const struct tcf_proto *tp, 142 struct tcf_result *res, bool compat_mode) 143 { 144 return TC_ACT_UNSPEC; 145 } 146 147 #endif 148 149 static inline unsigned long 150 __cls_set_class(unsigned long *clp, unsigned long cl) 151 { 152 return xchg(clp, cl); 153 } 154 155 static inline void 156 __tcf_bind_filter(struct Qdisc *q, struct tcf_result *r, unsigned long base) 157 { 158 unsigned long cl; 159 160 cl = q->ops->cl_ops->bind_tcf(q, base, r->classid); 161 cl = __cls_set_class(&r->class, cl); 162 if (cl) 163 q->ops->cl_ops->unbind_tcf(q, cl); 164 } 165 166 static inline void 167 tcf_bind_filter(struct tcf_proto *tp, struct tcf_result *r, unsigned long base) 168 { 169 struct Qdisc *q = tp->chain->block->q; 170 171 /* Check q as it is not set for shared blocks. In that case, 172 * setting class is not supported. 173 */ 174 if (!q) 175 return; 176 sch_tree_lock(q); 177 __tcf_bind_filter(q, r, base); 178 sch_tree_unlock(q); 179 } 180 181 static inline void 182 __tcf_unbind_filter(struct Qdisc *q, struct tcf_result *r) 183 { 184 unsigned long cl; 185 186 if ((cl = __cls_set_class(&r->class, 0)) != 0) 187 q->ops->cl_ops->unbind_tcf(q, cl); 188 } 189 190 static inline void 191 tcf_unbind_filter(struct tcf_proto *tp, struct tcf_result *r) 192 { 193 struct Qdisc *q = tp->chain->block->q; 194 195 if (!q) 196 return; 197 __tcf_unbind_filter(q, r); 198 } 199 200 struct tcf_exts { 201 #ifdef CONFIG_NET_CLS_ACT 202 __u32 type; /* for backward compat(TCA_OLD_COMPAT) */ 203 int nr_actions; 204 struct tc_action **actions; 205 struct net *net; 206 #endif 207 /* Map to export classifier specific extension TLV types to the 208 * generic extensions API. Unsupported extensions must be set to 0. 209 */ 210 int action; 211 int police; 212 }; 213 214 static inline int tcf_exts_init(struct tcf_exts *exts, struct net *net, 215 int action, int police) 216 { 217 #ifdef CONFIG_NET_CLS_ACT 218 exts->type = 0; 219 exts->nr_actions = 0; 220 exts->net = net; 221 exts->actions = kcalloc(TCA_ACT_MAX_PRIO, sizeof(struct tc_action *), 222 GFP_KERNEL); 223 if (!exts->actions) 224 return -ENOMEM; 225 #endif 226 exts->action = action; 227 exts->police = police; 228 return 0; 229 } 230 231 /* Return false if the netns is being destroyed in cleanup_net(). Callers 232 * need to do cleanup synchronously in this case, otherwise may race with 233 * tc_action_net_exit(). Return true for other cases. 234 */ 235 static inline bool tcf_exts_get_net(struct tcf_exts *exts) 236 { 237 #ifdef CONFIG_NET_CLS_ACT 238 exts->net = maybe_get_net(exts->net); 239 return exts->net != NULL; 240 #else 241 return true; 242 #endif 243 } 244 245 static inline void tcf_exts_put_net(struct tcf_exts *exts) 246 { 247 #ifdef CONFIG_NET_CLS_ACT 248 if (exts->net) 249 put_net(exts->net); 250 #endif 251 } 252 253 #ifdef CONFIG_NET_CLS_ACT 254 #define tcf_exts_for_each_action(i, a, exts) \ 255 for (i = 0; i < TCA_ACT_MAX_PRIO && ((a) = (exts)->actions[i]); i++) 256 #else 257 #define tcf_exts_for_each_action(i, a, exts) \ 258 for (; 0; (void)(i), (void)(a), (void)(exts)) 259 #endif 260 261 static inline void 262 tcf_exts_stats_update(const struct tcf_exts *exts, 263 u64 bytes, u64 packets, u64 drops, u64 lastuse, 264 u8 used_hw_stats, bool used_hw_stats_valid) 265 { 266 #ifdef CONFIG_NET_CLS_ACT 267 int i; 268 269 preempt_disable(); 270 271 for (i = 0; i < exts->nr_actions; i++) { 272 struct tc_action *a = exts->actions[i]; 273 274 tcf_action_stats_update(a, bytes, packets, drops, 275 lastuse, true); 276 a->used_hw_stats = used_hw_stats; 277 a->used_hw_stats_valid = used_hw_stats_valid; 278 } 279 280 preempt_enable(); 281 #endif 282 } 283 284 /** 285 * tcf_exts_has_actions - check if at least one action is present 286 * @exts: tc filter extensions handle 287 * 288 * Returns true if at least one action is present. 289 */ 290 static inline bool tcf_exts_has_actions(struct tcf_exts *exts) 291 { 292 #ifdef CONFIG_NET_CLS_ACT 293 return exts->nr_actions; 294 #else 295 return false; 296 #endif 297 } 298 299 /** 300 * tcf_exts_exec - execute tc filter extensions 301 * @skb: socket buffer 302 * @exts: tc filter extensions handle 303 * @res: desired result 304 * 305 * Executes all configured extensions. Returns TC_ACT_OK on a normal execution, 306 * a negative number if the filter must be considered unmatched or 307 * a positive action code (TC_ACT_*) which must be returned to the 308 * underlying layer. 309 */ 310 static inline int 311 tcf_exts_exec(struct sk_buff *skb, struct tcf_exts *exts, 312 struct tcf_result *res) 313 { 314 #ifdef CONFIG_NET_CLS_ACT 315 return tcf_action_exec(skb, exts->actions, exts->nr_actions, res); 316 #endif 317 return TC_ACT_OK; 318 } 319 320 int tcf_exts_validate(struct net *net, struct tcf_proto *tp, 321 struct nlattr **tb, struct nlattr *rate_tlv, 322 struct tcf_exts *exts, u32 flags, 323 struct netlink_ext_ack *extack); 324 void tcf_exts_destroy(struct tcf_exts *exts); 325 void tcf_exts_change(struct tcf_exts *dst, struct tcf_exts *src); 326 int tcf_exts_dump(struct sk_buff *skb, struct tcf_exts *exts); 327 int tcf_exts_terse_dump(struct sk_buff *skb, struct tcf_exts *exts); 328 int tcf_exts_dump_stats(struct sk_buff *skb, struct tcf_exts *exts); 329 330 /** 331 * struct tcf_pkt_info - packet information 332 * 333 * @ptr: start of the pkt data 334 * @nexthdr: offset of the next header 335 */ 336 struct tcf_pkt_info { 337 unsigned char * ptr; 338 int nexthdr; 339 }; 340 341 #ifdef CONFIG_NET_EMATCH 342 343 struct tcf_ematch_ops; 344 345 /** 346 * struct tcf_ematch - extended match (ematch) 347 * 348 * @matchid: identifier to allow userspace to reidentify a match 349 * @flags: flags specifying attributes and the relation to other matches 350 * @ops: the operations lookup table of the corresponding ematch module 351 * @datalen: length of the ematch specific configuration data 352 * @data: ematch specific data 353 * @net: the network namespace 354 */ 355 struct tcf_ematch { 356 struct tcf_ematch_ops * ops; 357 unsigned long data; 358 unsigned int datalen; 359 u16 matchid; 360 u16 flags; 361 struct net *net; 362 }; 363 364 static inline int tcf_em_is_container(struct tcf_ematch *em) 365 { 366 return !em->ops; 367 } 368 369 static inline int tcf_em_is_simple(struct tcf_ematch *em) 370 { 371 return em->flags & TCF_EM_SIMPLE; 372 } 373 374 static inline int tcf_em_is_inverted(struct tcf_ematch *em) 375 { 376 return em->flags & TCF_EM_INVERT; 377 } 378 379 static inline int tcf_em_last_match(struct tcf_ematch *em) 380 { 381 return (em->flags & TCF_EM_REL_MASK) == TCF_EM_REL_END; 382 } 383 384 static inline int tcf_em_early_end(struct tcf_ematch *em, int result) 385 { 386 if (tcf_em_last_match(em)) 387 return 1; 388 389 if (result == 0 && em->flags & TCF_EM_REL_AND) 390 return 1; 391 392 if (result != 0 && em->flags & TCF_EM_REL_OR) 393 return 1; 394 395 return 0; 396 } 397 398 /** 399 * struct tcf_ematch_tree - ematch tree handle 400 * 401 * @hdr: ematch tree header supplied by userspace 402 * @matches: array of ematches 403 */ 404 struct tcf_ematch_tree { 405 struct tcf_ematch_tree_hdr hdr; 406 struct tcf_ematch * matches; 407 408 }; 409 410 /** 411 * struct tcf_ematch_ops - ematch module operations 412 * 413 * @kind: identifier (kind) of this ematch module 414 * @datalen: length of expected configuration data (optional) 415 * @change: called during validation (optional) 416 * @match: called during ematch tree evaluation, must return 1/0 417 * @destroy: called during destroyage (optional) 418 * @dump: called during dumping process (optional) 419 * @owner: owner, must be set to THIS_MODULE 420 * @link: link to previous/next ematch module (internal use) 421 */ 422 struct tcf_ematch_ops { 423 int kind; 424 int datalen; 425 int (*change)(struct net *net, void *, 426 int, struct tcf_ematch *); 427 int (*match)(struct sk_buff *, struct tcf_ematch *, 428 struct tcf_pkt_info *); 429 void (*destroy)(struct tcf_ematch *); 430 int (*dump)(struct sk_buff *, struct tcf_ematch *); 431 struct module *owner; 432 struct list_head link; 433 }; 434 435 int tcf_em_register(struct tcf_ematch_ops *); 436 void tcf_em_unregister(struct tcf_ematch_ops *); 437 int tcf_em_tree_validate(struct tcf_proto *, struct nlattr *, 438 struct tcf_ematch_tree *); 439 void tcf_em_tree_destroy(struct tcf_ematch_tree *); 440 int tcf_em_tree_dump(struct sk_buff *, struct tcf_ematch_tree *, int); 441 int __tcf_em_tree_match(struct sk_buff *, struct tcf_ematch_tree *, 442 struct tcf_pkt_info *); 443 444 /** 445 * tcf_em_tree_match - evaulate an ematch tree 446 * 447 * @skb: socket buffer of the packet in question 448 * @tree: ematch tree to be used for evaluation 449 * @info: packet information examined by classifier 450 * 451 * This function matches @skb against the ematch tree in @tree by going 452 * through all ematches respecting their logic relations returning 453 * as soon as the result is obvious. 454 * 455 * Returns 1 if the ematch tree as-one matches, no ematches are configured 456 * or ematch is not enabled in the kernel, otherwise 0 is returned. 457 */ 458 static inline int tcf_em_tree_match(struct sk_buff *skb, 459 struct tcf_ematch_tree *tree, 460 struct tcf_pkt_info *info) 461 { 462 if (tree->hdr.nmatches) 463 return __tcf_em_tree_match(skb, tree, info); 464 else 465 return 1; 466 } 467 468 #define MODULE_ALIAS_TCF_EMATCH(kind) MODULE_ALIAS("ematch-kind-" __stringify(kind)) 469 470 #else /* CONFIG_NET_EMATCH */ 471 472 struct tcf_ematch_tree { 473 }; 474 475 #define tcf_em_tree_validate(tp, tb, t) ((void)(t), 0) 476 #define tcf_em_tree_destroy(t) do { (void)(t); } while(0) 477 #define tcf_em_tree_dump(skb, t, tlv) (0) 478 #define tcf_em_tree_match(skb, t, info) ((void)(info), 1) 479 480 #endif /* CONFIG_NET_EMATCH */ 481 482 static inline unsigned char * tcf_get_base_ptr(struct sk_buff *skb, int layer) 483 { 484 switch (layer) { 485 case TCF_LAYER_LINK: 486 return skb_mac_header(skb); 487 case TCF_LAYER_NETWORK: 488 return skb_network_header(skb); 489 case TCF_LAYER_TRANSPORT: 490 return skb_transport_header(skb); 491 } 492 493 return NULL; 494 } 495 496 static inline int tcf_valid_offset(const struct sk_buff *skb, 497 const unsigned char *ptr, const int len) 498 { 499 return likely((ptr + len) <= skb_tail_pointer(skb) && 500 ptr >= skb->head && 501 (ptr <= (ptr + len))); 502 } 503 504 static inline int 505 tcf_change_indev(struct net *net, struct nlattr *indev_tlv, 506 struct netlink_ext_ack *extack) 507 { 508 char indev[IFNAMSIZ]; 509 struct net_device *dev; 510 511 if (nla_strscpy(indev, indev_tlv, IFNAMSIZ) < 0) { 512 NL_SET_ERR_MSG_ATTR(extack, indev_tlv, 513 "Interface name too long"); 514 return -EINVAL; 515 } 516 dev = __dev_get_by_name(net, indev); 517 if (!dev) { 518 NL_SET_ERR_MSG_ATTR(extack, indev_tlv, 519 "Network device not found"); 520 return -ENODEV; 521 } 522 return dev->ifindex; 523 } 524 525 static inline bool 526 tcf_match_indev(struct sk_buff *skb, int ifindex) 527 { 528 if (!ifindex) 529 return true; 530 if (!skb->skb_iif) 531 return false; 532 return ifindex == skb->skb_iif; 533 } 534 535 int tc_setup_flow_action(struct flow_action *flow_action, 536 const struct tcf_exts *exts); 537 void tc_cleanup_flow_action(struct flow_action *flow_action); 538 539 int tc_setup_cb_call(struct tcf_block *block, enum tc_setup_type type, 540 void *type_data, bool err_stop, bool rtnl_held); 541 int tc_setup_cb_add(struct tcf_block *block, struct tcf_proto *tp, 542 enum tc_setup_type type, void *type_data, bool err_stop, 543 u32 *flags, unsigned int *in_hw_count, bool rtnl_held); 544 int tc_setup_cb_replace(struct tcf_block *block, struct tcf_proto *tp, 545 enum tc_setup_type type, void *type_data, bool err_stop, 546 u32 *old_flags, unsigned int *old_in_hw_count, 547 u32 *new_flags, unsigned int *new_in_hw_count, 548 bool rtnl_held); 549 int tc_setup_cb_destroy(struct tcf_block *block, struct tcf_proto *tp, 550 enum tc_setup_type type, void *type_data, bool err_stop, 551 u32 *flags, unsigned int *in_hw_count, bool rtnl_held); 552 int tc_setup_cb_reoffload(struct tcf_block *block, struct tcf_proto *tp, 553 bool add, flow_setup_cb_t *cb, 554 enum tc_setup_type type, void *type_data, 555 void *cb_priv, u32 *flags, unsigned int *in_hw_count); 556 unsigned int tcf_exts_num_actions(struct tcf_exts *exts); 557 558 #ifdef CONFIG_NET_CLS_ACT 559 int tcf_qevent_init(struct tcf_qevent *qe, struct Qdisc *sch, 560 enum flow_block_binder_type binder_type, 561 struct nlattr *block_index_attr, 562 struct netlink_ext_ack *extack); 563 void tcf_qevent_destroy(struct tcf_qevent *qe, struct Qdisc *sch); 564 int tcf_qevent_validate_change(struct tcf_qevent *qe, struct nlattr *block_index_attr, 565 struct netlink_ext_ack *extack); 566 struct sk_buff *tcf_qevent_handle(struct tcf_qevent *qe, struct Qdisc *sch, struct sk_buff *skb, 567 struct sk_buff **to_free, int *ret); 568 int tcf_qevent_dump(struct sk_buff *skb, int attr_name, struct tcf_qevent *qe); 569 #else 570 static inline int tcf_qevent_init(struct tcf_qevent *qe, struct Qdisc *sch, 571 enum flow_block_binder_type binder_type, 572 struct nlattr *block_index_attr, 573 struct netlink_ext_ack *extack) 574 { 575 return 0; 576 } 577 578 static inline void tcf_qevent_destroy(struct tcf_qevent *qe, struct Qdisc *sch) 579 { 580 } 581 582 static inline int tcf_qevent_validate_change(struct tcf_qevent *qe, struct nlattr *block_index_attr, 583 struct netlink_ext_ack *extack) 584 { 585 return 0; 586 } 587 588 static inline struct sk_buff * 589 tcf_qevent_handle(struct tcf_qevent *qe, struct Qdisc *sch, struct sk_buff *skb, 590 struct sk_buff **to_free, int *ret) 591 { 592 return skb; 593 } 594 595 static inline int tcf_qevent_dump(struct sk_buff *skb, int attr_name, struct tcf_qevent *qe) 596 { 597 return 0; 598 } 599 #endif 600 601 struct tc_cls_u32_knode { 602 struct tcf_exts *exts; 603 struct tcf_result *res; 604 struct tc_u32_sel *sel; 605 u32 handle; 606 u32 val; 607 u32 mask; 608 u32 link_handle; 609 u8 fshift; 610 }; 611 612 struct tc_cls_u32_hnode { 613 u32 handle; 614 u32 prio; 615 unsigned int divisor; 616 }; 617 618 enum tc_clsu32_command { 619 TC_CLSU32_NEW_KNODE, 620 TC_CLSU32_REPLACE_KNODE, 621 TC_CLSU32_DELETE_KNODE, 622 TC_CLSU32_NEW_HNODE, 623 TC_CLSU32_REPLACE_HNODE, 624 TC_CLSU32_DELETE_HNODE, 625 }; 626 627 struct tc_cls_u32_offload { 628 struct flow_cls_common_offload common; 629 /* knode values */ 630 enum tc_clsu32_command command; 631 union { 632 struct tc_cls_u32_knode knode; 633 struct tc_cls_u32_hnode hnode; 634 }; 635 }; 636 637 static inline bool tc_can_offload(const struct net_device *dev) 638 { 639 return dev->features & NETIF_F_HW_TC; 640 } 641 642 static inline bool tc_can_offload_extack(const struct net_device *dev, 643 struct netlink_ext_ack *extack) 644 { 645 bool can = tc_can_offload(dev); 646 647 if (!can) 648 NL_SET_ERR_MSG(extack, "TC offload is disabled on net device"); 649 650 return can; 651 } 652 653 static inline bool 654 tc_cls_can_offload_and_chain0(const struct net_device *dev, 655 struct flow_cls_common_offload *common) 656 { 657 if (!tc_can_offload_extack(dev, common->extack)) 658 return false; 659 if (common->chain_index) { 660 NL_SET_ERR_MSG(common->extack, 661 "Driver supports only offload of chain 0"); 662 return false; 663 } 664 return true; 665 } 666 667 static inline bool tc_skip_hw(u32 flags) 668 { 669 return (flags & TCA_CLS_FLAGS_SKIP_HW) ? true : false; 670 } 671 672 static inline bool tc_skip_sw(u32 flags) 673 { 674 return (flags & TCA_CLS_FLAGS_SKIP_SW) ? true : false; 675 } 676 677 /* SKIP_HW and SKIP_SW are mutually exclusive flags. */ 678 static inline bool tc_flags_valid(u32 flags) 679 { 680 if (flags & ~(TCA_CLS_FLAGS_SKIP_HW | TCA_CLS_FLAGS_SKIP_SW | 681 TCA_CLS_FLAGS_VERBOSE)) 682 return false; 683 684 flags &= TCA_CLS_FLAGS_SKIP_HW | TCA_CLS_FLAGS_SKIP_SW; 685 if (!(flags ^ (TCA_CLS_FLAGS_SKIP_HW | TCA_CLS_FLAGS_SKIP_SW))) 686 return false; 687 688 return true; 689 } 690 691 static inline bool tc_in_hw(u32 flags) 692 { 693 return (flags & TCA_CLS_FLAGS_IN_HW) ? true : false; 694 } 695 696 static inline void 697 tc_cls_common_offload_init(struct flow_cls_common_offload *cls_common, 698 const struct tcf_proto *tp, u32 flags, 699 struct netlink_ext_ack *extack) 700 { 701 cls_common->chain_index = tp->chain->index; 702 cls_common->protocol = tp->protocol; 703 cls_common->prio = tp->prio >> 16; 704 if (tc_skip_sw(flags) || flags & TCA_CLS_FLAGS_VERBOSE) 705 cls_common->extack = extack; 706 } 707 708 #if IS_ENABLED(CONFIG_NET_TC_SKB_EXT) 709 static inline struct tc_skb_ext *tc_skb_ext_alloc(struct sk_buff *skb) 710 { 711 struct tc_skb_ext *tc_skb_ext = skb_ext_add(skb, TC_SKB_EXT); 712 713 if (tc_skb_ext) 714 memset(tc_skb_ext, 0, sizeof(*tc_skb_ext)); 715 return tc_skb_ext; 716 } 717 #endif 718 719 enum tc_matchall_command { 720 TC_CLSMATCHALL_REPLACE, 721 TC_CLSMATCHALL_DESTROY, 722 TC_CLSMATCHALL_STATS, 723 }; 724 725 struct tc_cls_matchall_offload { 726 struct flow_cls_common_offload common; 727 enum tc_matchall_command command; 728 struct flow_rule *rule; 729 struct flow_stats stats; 730 unsigned long cookie; 731 }; 732 733 enum tc_clsbpf_command { 734 TC_CLSBPF_OFFLOAD, 735 TC_CLSBPF_STATS, 736 }; 737 738 struct tc_cls_bpf_offload { 739 struct flow_cls_common_offload common; 740 enum tc_clsbpf_command command; 741 struct tcf_exts *exts; 742 struct bpf_prog *prog; 743 struct bpf_prog *oldprog; 744 const char *name; 745 bool exts_integrated; 746 }; 747 748 struct tc_mqprio_qopt_offload { 749 /* struct tc_mqprio_qopt must always be the first element */ 750 struct tc_mqprio_qopt qopt; 751 u16 mode; 752 u16 shaper; 753 u32 flags; 754 u64 min_rate[TC_QOPT_MAX_QUEUE]; 755 u64 max_rate[TC_QOPT_MAX_QUEUE]; 756 }; 757 758 /* This structure holds cookie structure that is passed from user 759 * to the kernel for actions and classifiers 760 */ 761 struct tc_cookie { 762 u8 *data; 763 u32 len; 764 struct rcu_head rcu; 765 }; 766 767 struct tc_qopt_offload_stats { 768 struct gnet_stats_basic_packed *bstats; 769 struct gnet_stats_queue *qstats; 770 }; 771 772 enum tc_mq_command { 773 TC_MQ_CREATE, 774 TC_MQ_DESTROY, 775 TC_MQ_STATS, 776 TC_MQ_GRAFT, 777 }; 778 779 struct tc_mq_opt_offload_graft_params { 780 unsigned long queue; 781 u32 child_handle; 782 }; 783 784 struct tc_mq_qopt_offload { 785 enum tc_mq_command command; 786 u32 handle; 787 union { 788 struct tc_qopt_offload_stats stats; 789 struct tc_mq_opt_offload_graft_params graft_params; 790 }; 791 }; 792 793 enum tc_htb_command { 794 /* Root */ 795 TC_HTB_CREATE, /* Initialize HTB offload. */ 796 TC_HTB_DESTROY, /* Destroy HTB offload. */ 797 798 /* Classes */ 799 /* Allocate qid and create leaf. */ 800 TC_HTB_LEAF_ALLOC_QUEUE, 801 /* Convert leaf to inner, preserve and return qid, create new leaf. */ 802 TC_HTB_LEAF_TO_INNER, 803 /* Delete leaf, while siblings remain. */ 804 TC_HTB_LEAF_DEL, 805 /* Delete leaf, convert parent to leaf, preserving qid. */ 806 TC_HTB_LEAF_DEL_LAST, 807 /* TC_HTB_LEAF_DEL_LAST, but delete driver data on hardware errors. */ 808 TC_HTB_LEAF_DEL_LAST_FORCE, 809 /* Modify parameters of a node. */ 810 TC_HTB_NODE_MODIFY, 811 812 /* Class qdisc */ 813 TC_HTB_LEAF_QUERY_QUEUE, /* Query qid by classid. */ 814 }; 815 816 struct tc_htb_qopt_offload { 817 struct netlink_ext_ack *extack; 818 enum tc_htb_command command; 819 u32 parent_classid; 820 u16 classid; 821 u16 qid; 822 u64 rate; 823 u64 ceil; 824 }; 825 826 #define TC_HTB_CLASSID_ROOT U32_MAX 827 828 enum tc_red_command { 829 TC_RED_REPLACE, 830 TC_RED_DESTROY, 831 TC_RED_STATS, 832 TC_RED_XSTATS, 833 TC_RED_GRAFT, 834 }; 835 836 struct tc_red_qopt_offload_params { 837 u32 min; 838 u32 max; 839 u32 probability; 840 u32 limit; 841 bool is_ecn; 842 bool is_harddrop; 843 bool is_nodrop; 844 struct gnet_stats_queue *qstats; 845 }; 846 847 struct tc_red_qopt_offload { 848 enum tc_red_command command; 849 u32 handle; 850 u32 parent; 851 union { 852 struct tc_red_qopt_offload_params set; 853 struct tc_qopt_offload_stats stats; 854 struct red_stats *xstats; 855 u32 child_handle; 856 }; 857 }; 858 859 enum tc_gred_command { 860 TC_GRED_REPLACE, 861 TC_GRED_DESTROY, 862 TC_GRED_STATS, 863 }; 864 865 struct tc_gred_vq_qopt_offload_params { 866 bool present; 867 u32 limit; 868 u32 prio; 869 u32 min; 870 u32 max; 871 bool is_ecn; 872 bool is_harddrop; 873 u32 probability; 874 /* Only need backlog, see struct tc_prio_qopt_offload_params */ 875 u32 *backlog; 876 }; 877 878 struct tc_gred_qopt_offload_params { 879 bool grio_on; 880 bool wred_on; 881 unsigned int dp_cnt; 882 unsigned int dp_def; 883 struct gnet_stats_queue *qstats; 884 struct tc_gred_vq_qopt_offload_params tab[MAX_DPs]; 885 }; 886 887 struct tc_gred_qopt_offload_stats { 888 struct gnet_stats_basic_packed bstats[MAX_DPs]; 889 struct gnet_stats_queue qstats[MAX_DPs]; 890 struct red_stats *xstats[MAX_DPs]; 891 }; 892 893 struct tc_gred_qopt_offload { 894 enum tc_gred_command command; 895 u32 handle; 896 u32 parent; 897 union { 898 struct tc_gred_qopt_offload_params set; 899 struct tc_gred_qopt_offload_stats stats; 900 }; 901 }; 902 903 enum tc_prio_command { 904 TC_PRIO_REPLACE, 905 TC_PRIO_DESTROY, 906 TC_PRIO_STATS, 907 TC_PRIO_GRAFT, 908 }; 909 910 struct tc_prio_qopt_offload_params { 911 int bands; 912 u8 priomap[TC_PRIO_MAX + 1]; 913 /* At the point of un-offloading the Qdisc, the reported backlog and 914 * qlen need to be reduced by the portion that is in HW. 915 */ 916 struct gnet_stats_queue *qstats; 917 }; 918 919 struct tc_prio_qopt_offload_graft_params { 920 u8 band; 921 u32 child_handle; 922 }; 923 924 struct tc_prio_qopt_offload { 925 enum tc_prio_command command; 926 u32 handle; 927 u32 parent; 928 union { 929 struct tc_prio_qopt_offload_params replace_params; 930 struct tc_qopt_offload_stats stats; 931 struct tc_prio_qopt_offload_graft_params graft_params; 932 }; 933 }; 934 935 enum tc_root_command { 936 TC_ROOT_GRAFT, 937 }; 938 939 struct tc_root_qopt_offload { 940 enum tc_root_command command; 941 u32 handle; 942 bool ingress; 943 }; 944 945 enum tc_ets_command { 946 TC_ETS_REPLACE, 947 TC_ETS_DESTROY, 948 TC_ETS_STATS, 949 TC_ETS_GRAFT, 950 }; 951 952 struct tc_ets_qopt_offload_replace_params { 953 unsigned int bands; 954 u8 priomap[TC_PRIO_MAX + 1]; 955 unsigned int quanta[TCQ_ETS_MAX_BANDS]; /* 0 for strict bands. */ 956 unsigned int weights[TCQ_ETS_MAX_BANDS]; 957 struct gnet_stats_queue *qstats; 958 }; 959 960 struct tc_ets_qopt_offload_graft_params { 961 u8 band; 962 u32 child_handle; 963 }; 964 965 struct tc_ets_qopt_offload { 966 enum tc_ets_command command; 967 u32 handle; 968 u32 parent; 969 union { 970 struct tc_ets_qopt_offload_replace_params replace_params; 971 struct tc_qopt_offload_stats stats; 972 struct tc_ets_qopt_offload_graft_params graft_params; 973 }; 974 }; 975 976 enum tc_tbf_command { 977 TC_TBF_REPLACE, 978 TC_TBF_DESTROY, 979 TC_TBF_STATS, 980 }; 981 982 struct tc_tbf_qopt_offload_replace_params { 983 struct psched_ratecfg rate; 984 u32 max_size; 985 struct gnet_stats_queue *qstats; 986 }; 987 988 struct tc_tbf_qopt_offload { 989 enum tc_tbf_command command; 990 u32 handle; 991 u32 parent; 992 union { 993 struct tc_tbf_qopt_offload_replace_params replace_params; 994 struct tc_qopt_offload_stats stats; 995 }; 996 }; 997 998 enum tc_fifo_command { 999 TC_FIFO_REPLACE, 1000 TC_FIFO_DESTROY, 1001 TC_FIFO_STATS, 1002 }; 1003 1004 struct tc_fifo_qopt_offload { 1005 enum tc_fifo_command command; 1006 u32 handle; 1007 u32 parent; 1008 union { 1009 struct tc_qopt_offload_stats stats; 1010 }; 1011 }; 1012 1013 #endif 1014