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, const struct tcf_proto *tp, 80 struct tcf_result *res, bool compat_mode); 81 int tcf_classify_ingress(struct sk_buff *skb, 82 const struct tcf_block *ingress_block, 83 const struct tcf_proto *tp, struct tcf_result *res, 84 bool compat_mode); 85 86 #else 87 static inline bool tcf_block_shared(struct tcf_block *block) 88 { 89 return false; 90 } 91 92 static inline bool tcf_block_non_null_shared(struct tcf_block *block) 93 { 94 return false; 95 } 96 97 static inline 98 int tcf_block_get(struct tcf_block **p_block, 99 struct tcf_proto __rcu **p_filter_chain, struct Qdisc *q, 100 struct netlink_ext_ack *extack) 101 { 102 return 0; 103 } 104 105 static inline 106 int tcf_block_get_ext(struct tcf_block **p_block, struct Qdisc *q, 107 struct tcf_block_ext_info *ei, 108 struct netlink_ext_ack *extack) 109 { 110 return 0; 111 } 112 113 static inline void tcf_block_put(struct tcf_block *block) 114 { 115 } 116 117 static inline 118 void tcf_block_put_ext(struct tcf_block *block, struct Qdisc *q, 119 struct tcf_block_ext_info *ei) 120 { 121 } 122 123 static inline struct Qdisc *tcf_block_q(struct tcf_block *block) 124 { 125 return NULL; 126 } 127 128 static inline 129 int tc_setup_cb_block_register(struct tcf_block *block, flow_setup_cb_t *cb, 130 void *cb_priv) 131 { 132 return 0; 133 } 134 135 static inline 136 void tc_setup_cb_block_unregister(struct tcf_block *block, flow_setup_cb_t *cb, 137 void *cb_priv) 138 { 139 } 140 141 static inline int tcf_classify(struct sk_buff *skb, const struct tcf_proto *tp, 142 struct tcf_result *res, bool compat_mode) 143 { 144 return TC_ACT_UNSPEC; 145 } 146 147 static inline int tcf_classify_ingress(struct sk_buff *skb, 148 const struct tcf_block *ingress_block, 149 const struct tcf_proto *tp, 150 struct tcf_result *res, bool compat_mode) 151 { 152 return TC_ACT_UNSPEC; 153 } 154 155 #endif 156 157 static inline unsigned long 158 __cls_set_class(unsigned long *clp, unsigned long cl) 159 { 160 return xchg(clp, cl); 161 } 162 163 static inline void 164 __tcf_bind_filter(struct Qdisc *q, struct tcf_result *r, unsigned long base) 165 { 166 unsigned long cl; 167 168 cl = q->ops->cl_ops->bind_tcf(q, base, r->classid); 169 cl = __cls_set_class(&r->class, cl); 170 if (cl) 171 q->ops->cl_ops->unbind_tcf(q, cl); 172 } 173 174 static inline void 175 tcf_bind_filter(struct tcf_proto *tp, struct tcf_result *r, unsigned long base) 176 { 177 struct Qdisc *q = tp->chain->block->q; 178 179 /* Check q as it is not set for shared blocks. In that case, 180 * setting class is not supported. 181 */ 182 if (!q) 183 return; 184 sch_tree_lock(q); 185 __tcf_bind_filter(q, r, base); 186 sch_tree_unlock(q); 187 } 188 189 static inline void 190 __tcf_unbind_filter(struct Qdisc *q, struct tcf_result *r) 191 { 192 unsigned long cl; 193 194 if ((cl = __cls_set_class(&r->class, 0)) != 0) 195 q->ops->cl_ops->unbind_tcf(q, cl); 196 } 197 198 static inline void 199 tcf_unbind_filter(struct tcf_proto *tp, struct tcf_result *r) 200 { 201 struct Qdisc *q = tp->chain->block->q; 202 203 if (!q) 204 return; 205 __tcf_unbind_filter(q, r); 206 } 207 208 struct tcf_exts { 209 #ifdef CONFIG_NET_CLS_ACT 210 __u32 type; /* for backward compat(TCA_OLD_COMPAT) */ 211 int nr_actions; 212 struct tc_action **actions; 213 struct net *net; 214 #endif 215 /* Map to export classifier specific extension TLV types to the 216 * generic extensions API. Unsupported extensions must be set to 0. 217 */ 218 int action; 219 int police; 220 }; 221 222 static inline int tcf_exts_init(struct tcf_exts *exts, struct net *net, 223 int action, int police) 224 { 225 #ifdef CONFIG_NET_CLS_ACT 226 exts->type = 0; 227 exts->nr_actions = 0; 228 exts->net = net; 229 exts->actions = kcalloc(TCA_ACT_MAX_PRIO, sizeof(struct tc_action *), 230 GFP_KERNEL); 231 if (!exts->actions) 232 return -ENOMEM; 233 #endif 234 exts->action = action; 235 exts->police = police; 236 return 0; 237 } 238 239 /* Return false if the netns is being destroyed in cleanup_net(). Callers 240 * need to do cleanup synchronously in this case, otherwise may race with 241 * tc_action_net_exit(). Return true for other cases. 242 */ 243 static inline bool tcf_exts_get_net(struct tcf_exts *exts) 244 { 245 #ifdef CONFIG_NET_CLS_ACT 246 exts->net = maybe_get_net(exts->net); 247 return exts->net != NULL; 248 #else 249 return true; 250 #endif 251 } 252 253 static inline void tcf_exts_put_net(struct tcf_exts *exts) 254 { 255 #ifdef CONFIG_NET_CLS_ACT 256 if (exts->net) 257 put_net(exts->net); 258 #endif 259 } 260 261 #ifdef CONFIG_NET_CLS_ACT 262 #define tcf_exts_for_each_action(i, a, exts) \ 263 for (i = 0; i < TCA_ACT_MAX_PRIO && ((a) = (exts)->actions[i]); i++) 264 #else 265 #define tcf_exts_for_each_action(i, a, exts) \ 266 for (; 0; (void)(i), (void)(a), (void)(exts)) 267 #endif 268 269 static inline void 270 tcf_exts_stats_update(const struct tcf_exts *exts, 271 u64 bytes, u64 packets, u64 drops, u64 lastuse, 272 u8 used_hw_stats, bool used_hw_stats_valid) 273 { 274 #ifdef CONFIG_NET_CLS_ACT 275 int i; 276 277 preempt_disable(); 278 279 for (i = 0; i < exts->nr_actions; i++) { 280 struct tc_action *a = exts->actions[i]; 281 282 tcf_action_stats_update(a, bytes, packets, drops, 283 lastuse, true); 284 a->used_hw_stats = used_hw_stats; 285 a->used_hw_stats_valid = used_hw_stats_valid; 286 } 287 288 preempt_enable(); 289 #endif 290 } 291 292 /** 293 * tcf_exts_has_actions - check if at least one action is present 294 * @exts: tc filter extensions handle 295 * 296 * Returns true if at least one action is present. 297 */ 298 static inline bool tcf_exts_has_actions(struct tcf_exts *exts) 299 { 300 #ifdef CONFIG_NET_CLS_ACT 301 return exts->nr_actions; 302 #else 303 return false; 304 #endif 305 } 306 307 /** 308 * tcf_exts_exec - execute tc filter extensions 309 * @skb: socket buffer 310 * @exts: tc filter extensions handle 311 * @res: desired result 312 * 313 * Executes all configured extensions. Returns TC_ACT_OK on a normal execution, 314 * a negative number if the filter must be considered unmatched or 315 * a positive action code (TC_ACT_*) which must be returned to the 316 * underlying layer. 317 */ 318 static inline int 319 tcf_exts_exec(struct sk_buff *skb, struct tcf_exts *exts, 320 struct tcf_result *res) 321 { 322 #ifdef CONFIG_NET_CLS_ACT 323 return tcf_action_exec(skb, exts->actions, exts->nr_actions, res); 324 #endif 325 return TC_ACT_OK; 326 } 327 328 int tcf_exts_validate(struct net *net, struct tcf_proto *tp, 329 struct nlattr **tb, struct nlattr *rate_tlv, 330 struct tcf_exts *exts, bool ovr, bool rtnl_held, 331 struct netlink_ext_ack *extack); 332 void tcf_exts_destroy(struct tcf_exts *exts); 333 void tcf_exts_change(struct tcf_exts *dst, struct tcf_exts *src); 334 int tcf_exts_dump(struct sk_buff *skb, struct tcf_exts *exts); 335 int tcf_exts_terse_dump(struct sk_buff *skb, struct tcf_exts *exts); 336 int tcf_exts_dump_stats(struct sk_buff *skb, struct tcf_exts *exts); 337 338 /** 339 * struct tcf_pkt_info - packet information 340 */ 341 struct tcf_pkt_info { 342 unsigned char * ptr; 343 int nexthdr; 344 }; 345 346 #ifdef CONFIG_NET_EMATCH 347 348 struct tcf_ematch_ops; 349 350 /** 351 * struct tcf_ematch - extended match (ematch) 352 * 353 * @matchid: identifier to allow userspace to reidentify a match 354 * @flags: flags specifying attributes and the relation to other matches 355 * @ops: the operations lookup table of the corresponding ematch module 356 * @datalen: length of the ematch specific configuration data 357 * @data: ematch specific data 358 */ 359 struct tcf_ematch { 360 struct tcf_ematch_ops * ops; 361 unsigned long data; 362 unsigned int datalen; 363 u16 matchid; 364 u16 flags; 365 struct net *net; 366 }; 367 368 static inline int tcf_em_is_container(struct tcf_ematch *em) 369 { 370 return !em->ops; 371 } 372 373 static inline int tcf_em_is_simple(struct tcf_ematch *em) 374 { 375 return em->flags & TCF_EM_SIMPLE; 376 } 377 378 static inline int tcf_em_is_inverted(struct tcf_ematch *em) 379 { 380 return em->flags & TCF_EM_INVERT; 381 } 382 383 static inline int tcf_em_last_match(struct tcf_ematch *em) 384 { 385 return (em->flags & TCF_EM_REL_MASK) == TCF_EM_REL_END; 386 } 387 388 static inline int tcf_em_early_end(struct tcf_ematch *em, int result) 389 { 390 if (tcf_em_last_match(em)) 391 return 1; 392 393 if (result == 0 && em->flags & TCF_EM_REL_AND) 394 return 1; 395 396 if (result != 0 && em->flags & TCF_EM_REL_OR) 397 return 1; 398 399 return 0; 400 } 401 402 /** 403 * struct tcf_ematch_tree - ematch tree handle 404 * 405 * @hdr: ematch tree header supplied by userspace 406 * @matches: array of ematches 407 */ 408 struct tcf_ematch_tree { 409 struct tcf_ematch_tree_hdr hdr; 410 struct tcf_ematch * matches; 411 412 }; 413 414 /** 415 * struct tcf_ematch_ops - ematch module operations 416 * 417 * @kind: identifier (kind) of this ematch module 418 * @datalen: length of expected configuration data (optional) 419 * @change: called during validation (optional) 420 * @match: called during ematch tree evaluation, must return 1/0 421 * @destroy: called during destroyage (optional) 422 * @dump: called during dumping process (optional) 423 * @owner: owner, must be set to THIS_MODULE 424 * @link: link to previous/next ematch module (internal use) 425 */ 426 struct tcf_ematch_ops { 427 int kind; 428 int datalen; 429 int (*change)(struct net *net, void *, 430 int, struct tcf_ematch *); 431 int (*match)(struct sk_buff *, struct tcf_ematch *, 432 struct tcf_pkt_info *); 433 void (*destroy)(struct tcf_ematch *); 434 int (*dump)(struct sk_buff *, struct tcf_ematch *); 435 struct module *owner; 436 struct list_head link; 437 }; 438 439 int tcf_em_register(struct tcf_ematch_ops *); 440 void tcf_em_unregister(struct tcf_ematch_ops *); 441 int tcf_em_tree_validate(struct tcf_proto *, struct nlattr *, 442 struct tcf_ematch_tree *); 443 void tcf_em_tree_destroy(struct tcf_ematch_tree *); 444 int tcf_em_tree_dump(struct sk_buff *, struct tcf_ematch_tree *, int); 445 int __tcf_em_tree_match(struct sk_buff *, struct tcf_ematch_tree *, 446 struct tcf_pkt_info *); 447 448 /** 449 * tcf_em_tree_match - evaulate an ematch tree 450 * 451 * @skb: socket buffer of the packet in question 452 * @tree: ematch tree to be used for evaluation 453 * @info: packet information examined by classifier 454 * 455 * This function matches @skb against the ematch tree in @tree by going 456 * through all ematches respecting their logic relations returning 457 * as soon as the result is obvious. 458 * 459 * Returns 1 if the ematch tree as-one matches, no ematches are configured 460 * or ematch is not enabled in the kernel, otherwise 0 is returned. 461 */ 462 static inline int tcf_em_tree_match(struct sk_buff *skb, 463 struct tcf_ematch_tree *tree, 464 struct tcf_pkt_info *info) 465 { 466 if (tree->hdr.nmatches) 467 return __tcf_em_tree_match(skb, tree, info); 468 else 469 return 1; 470 } 471 472 #define MODULE_ALIAS_TCF_EMATCH(kind) MODULE_ALIAS("ematch-kind-" __stringify(kind)) 473 474 #else /* CONFIG_NET_EMATCH */ 475 476 struct tcf_ematch_tree { 477 }; 478 479 #define tcf_em_tree_validate(tp, tb, t) ((void)(t), 0) 480 #define tcf_em_tree_destroy(t) do { (void)(t); } while(0) 481 #define tcf_em_tree_dump(skb, t, tlv) (0) 482 #define tcf_em_tree_match(skb, t, info) ((void)(info), 1) 483 484 #endif /* CONFIG_NET_EMATCH */ 485 486 static inline unsigned char * tcf_get_base_ptr(struct sk_buff *skb, int layer) 487 { 488 switch (layer) { 489 case TCF_LAYER_LINK: 490 return skb_mac_header(skb); 491 case TCF_LAYER_NETWORK: 492 return skb_network_header(skb); 493 case TCF_LAYER_TRANSPORT: 494 return skb_transport_header(skb); 495 } 496 497 return NULL; 498 } 499 500 static inline int tcf_valid_offset(const struct sk_buff *skb, 501 const unsigned char *ptr, const int len) 502 { 503 return likely((ptr + len) <= skb_tail_pointer(skb) && 504 ptr >= skb->head && 505 (ptr <= (ptr + len))); 506 } 507 508 static inline int 509 tcf_change_indev(struct net *net, struct nlattr *indev_tlv, 510 struct netlink_ext_ack *extack) 511 { 512 char indev[IFNAMSIZ]; 513 struct net_device *dev; 514 515 if (nla_strscpy(indev, indev_tlv, IFNAMSIZ) < 0) { 516 NL_SET_ERR_MSG_ATTR(extack, indev_tlv, 517 "Interface name too long"); 518 return -EINVAL; 519 } 520 dev = __dev_get_by_name(net, indev); 521 if (!dev) { 522 NL_SET_ERR_MSG_ATTR(extack, indev_tlv, 523 "Network device not found"); 524 return -ENODEV; 525 } 526 return dev->ifindex; 527 } 528 529 static inline bool 530 tcf_match_indev(struct sk_buff *skb, int ifindex) 531 { 532 if (!ifindex) 533 return true; 534 if (!skb->skb_iif) 535 return false; 536 return ifindex == skb->skb_iif; 537 } 538 539 int tc_setup_flow_action(struct flow_action *flow_action, 540 const struct tcf_exts *exts); 541 void tc_cleanup_flow_action(struct flow_action *flow_action); 542 543 int tc_setup_cb_call(struct tcf_block *block, enum tc_setup_type type, 544 void *type_data, bool err_stop, bool rtnl_held); 545 int tc_setup_cb_add(struct tcf_block *block, struct tcf_proto *tp, 546 enum tc_setup_type type, void *type_data, bool err_stop, 547 u32 *flags, unsigned int *in_hw_count, bool rtnl_held); 548 int tc_setup_cb_replace(struct tcf_block *block, struct tcf_proto *tp, 549 enum tc_setup_type type, void *type_data, bool err_stop, 550 u32 *old_flags, unsigned int *old_in_hw_count, 551 u32 *new_flags, unsigned int *new_in_hw_count, 552 bool rtnl_held); 553 int tc_setup_cb_destroy(struct tcf_block *block, struct tcf_proto *tp, 554 enum tc_setup_type type, void *type_data, bool err_stop, 555 u32 *flags, unsigned int *in_hw_count, bool rtnl_held); 556 int tc_setup_cb_reoffload(struct tcf_block *block, struct tcf_proto *tp, 557 bool add, flow_setup_cb_t *cb, 558 enum tc_setup_type type, void *type_data, 559 void *cb_priv, u32 *flags, unsigned int *in_hw_count); 560 unsigned int tcf_exts_num_actions(struct tcf_exts *exts); 561 562 #ifdef CONFIG_NET_CLS_ACT 563 int tcf_qevent_init(struct tcf_qevent *qe, struct Qdisc *sch, 564 enum flow_block_binder_type binder_type, 565 struct nlattr *block_index_attr, 566 struct netlink_ext_ack *extack); 567 void tcf_qevent_destroy(struct tcf_qevent *qe, struct Qdisc *sch); 568 int tcf_qevent_validate_change(struct tcf_qevent *qe, struct nlattr *block_index_attr, 569 struct netlink_ext_ack *extack); 570 struct sk_buff *tcf_qevent_handle(struct tcf_qevent *qe, struct Qdisc *sch, struct sk_buff *skb, 571 struct sk_buff **to_free, int *ret); 572 int tcf_qevent_dump(struct sk_buff *skb, int attr_name, struct tcf_qevent *qe); 573 #else 574 static inline int tcf_qevent_init(struct tcf_qevent *qe, struct Qdisc *sch, 575 enum flow_block_binder_type binder_type, 576 struct nlattr *block_index_attr, 577 struct netlink_ext_ack *extack) 578 { 579 return 0; 580 } 581 582 static inline void tcf_qevent_destroy(struct tcf_qevent *qe, struct Qdisc *sch) 583 { 584 } 585 586 static inline int tcf_qevent_validate_change(struct tcf_qevent *qe, struct nlattr *block_index_attr, 587 struct netlink_ext_ack *extack) 588 { 589 return 0; 590 } 591 592 static inline struct sk_buff * 593 tcf_qevent_handle(struct tcf_qevent *qe, struct Qdisc *sch, struct sk_buff *skb, 594 struct sk_buff **to_free, int *ret) 595 { 596 return skb; 597 } 598 599 static inline int tcf_qevent_dump(struct sk_buff *skb, int attr_name, struct tcf_qevent *qe) 600 { 601 return 0; 602 } 603 #endif 604 605 struct tc_cls_u32_knode { 606 struct tcf_exts *exts; 607 struct tcf_result *res; 608 struct tc_u32_sel *sel; 609 u32 handle; 610 u32 val; 611 u32 mask; 612 u32 link_handle; 613 u8 fshift; 614 }; 615 616 struct tc_cls_u32_hnode { 617 u32 handle; 618 u32 prio; 619 unsigned int divisor; 620 }; 621 622 enum tc_clsu32_command { 623 TC_CLSU32_NEW_KNODE, 624 TC_CLSU32_REPLACE_KNODE, 625 TC_CLSU32_DELETE_KNODE, 626 TC_CLSU32_NEW_HNODE, 627 TC_CLSU32_REPLACE_HNODE, 628 TC_CLSU32_DELETE_HNODE, 629 }; 630 631 struct tc_cls_u32_offload { 632 struct flow_cls_common_offload common; 633 /* knode values */ 634 enum tc_clsu32_command command; 635 union { 636 struct tc_cls_u32_knode knode; 637 struct tc_cls_u32_hnode hnode; 638 }; 639 }; 640 641 static inline bool tc_can_offload(const struct net_device *dev) 642 { 643 return dev->features & NETIF_F_HW_TC; 644 } 645 646 static inline bool tc_can_offload_extack(const struct net_device *dev, 647 struct netlink_ext_ack *extack) 648 { 649 bool can = tc_can_offload(dev); 650 651 if (!can) 652 NL_SET_ERR_MSG(extack, "TC offload is disabled on net device"); 653 654 return can; 655 } 656 657 static inline bool 658 tc_cls_can_offload_and_chain0(const struct net_device *dev, 659 struct flow_cls_common_offload *common) 660 { 661 if (!tc_can_offload_extack(dev, common->extack)) 662 return false; 663 if (common->chain_index) { 664 NL_SET_ERR_MSG(common->extack, 665 "Driver supports only offload of chain 0"); 666 return false; 667 } 668 return true; 669 } 670 671 static inline bool tc_skip_hw(u32 flags) 672 { 673 return (flags & TCA_CLS_FLAGS_SKIP_HW) ? true : false; 674 } 675 676 static inline bool tc_skip_sw(u32 flags) 677 { 678 return (flags & TCA_CLS_FLAGS_SKIP_SW) ? true : false; 679 } 680 681 /* SKIP_HW and SKIP_SW are mutually exclusive flags. */ 682 static inline bool tc_flags_valid(u32 flags) 683 { 684 if (flags & ~(TCA_CLS_FLAGS_SKIP_HW | TCA_CLS_FLAGS_SKIP_SW | 685 TCA_CLS_FLAGS_VERBOSE)) 686 return false; 687 688 flags &= TCA_CLS_FLAGS_SKIP_HW | TCA_CLS_FLAGS_SKIP_SW; 689 if (!(flags ^ (TCA_CLS_FLAGS_SKIP_HW | TCA_CLS_FLAGS_SKIP_SW))) 690 return false; 691 692 return true; 693 } 694 695 static inline bool tc_in_hw(u32 flags) 696 { 697 return (flags & TCA_CLS_FLAGS_IN_HW) ? true : false; 698 } 699 700 static inline void 701 tc_cls_common_offload_init(struct flow_cls_common_offload *cls_common, 702 const struct tcf_proto *tp, u32 flags, 703 struct netlink_ext_ack *extack) 704 { 705 cls_common->chain_index = tp->chain->index; 706 cls_common->protocol = tp->protocol; 707 cls_common->prio = tp->prio >> 16; 708 if (tc_skip_sw(flags) || flags & TCA_CLS_FLAGS_VERBOSE) 709 cls_common->extack = extack; 710 } 711 712 #if IS_ENABLED(CONFIG_NET_TC_SKB_EXT) 713 static inline struct tc_skb_ext *tc_skb_ext_alloc(struct sk_buff *skb) 714 { 715 struct tc_skb_ext *tc_skb_ext = skb_ext_add(skb, TC_SKB_EXT); 716 717 if (tc_skb_ext) 718 memset(tc_skb_ext, 0, sizeof(*tc_skb_ext)); 719 return tc_skb_ext; 720 } 721 #endif 722 723 enum tc_matchall_command { 724 TC_CLSMATCHALL_REPLACE, 725 TC_CLSMATCHALL_DESTROY, 726 TC_CLSMATCHALL_STATS, 727 }; 728 729 struct tc_cls_matchall_offload { 730 struct flow_cls_common_offload common; 731 enum tc_matchall_command command; 732 struct flow_rule *rule; 733 struct flow_stats stats; 734 unsigned long cookie; 735 }; 736 737 enum tc_clsbpf_command { 738 TC_CLSBPF_OFFLOAD, 739 TC_CLSBPF_STATS, 740 }; 741 742 struct tc_cls_bpf_offload { 743 struct flow_cls_common_offload common; 744 enum tc_clsbpf_command command; 745 struct tcf_exts *exts; 746 struct bpf_prog *prog; 747 struct bpf_prog *oldprog; 748 const char *name; 749 bool exts_integrated; 750 }; 751 752 struct tc_mqprio_qopt_offload { 753 /* struct tc_mqprio_qopt must always be the first element */ 754 struct tc_mqprio_qopt qopt; 755 u16 mode; 756 u16 shaper; 757 u32 flags; 758 u64 min_rate[TC_QOPT_MAX_QUEUE]; 759 u64 max_rate[TC_QOPT_MAX_QUEUE]; 760 }; 761 762 /* This structure holds cookie structure that is passed from user 763 * to the kernel for actions and classifiers 764 */ 765 struct tc_cookie { 766 u8 *data; 767 u32 len; 768 struct rcu_head rcu; 769 }; 770 771 struct tc_qopt_offload_stats { 772 struct gnet_stats_basic_packed *bstats; 773 struct gnet_stats_queue *qstats; 774 }; 775 776 enum tc_mq_command { 777 TC_MQ_CREATE, 778 TC_MQ_DESTROY, 779 TC_MQ_STATS, 780 TC_MQ_GRAFT, 781 }; 782 783 struct tc_mq_opt_offload_graft_params { 784 unsigned long queue; 785 u32 child_handle; 786 }; 787 788 struct tc_mq_qopt_offload { 789 enum tc_mq_command command; 790 u32 handle; 791 union { 792 struct tc_qopt_offload_stats stats; 793 struct tc_mq_opt_offload_graft_params graft_params; 794 }; 795 }; 796 797 enum tc_htb_command { 798 /* Root */ 799 TC_HTB_CREATE, /* Initialize HTB offload. */ 800 TC_HTB_DESTROY, /* Destroy HTB offload. */ 801 802 /* Classes */ 803 /* Allocate qid and create leaf. */ 804 TC_HTB_LEAF_ALLOC_QUEUE, 805 /* Convert leaf to inner, preserve and return qid, create new leaf. */ 806 TC_HTB_LEAF_TO_INNER, 807 /* Delete leaf, while siblings remain. */ 808 TC_HTB_LEAF_DEL, 809 /* Delete leaf, convert parent to leaf, preserving qid. */ 810 TC_HTB_LEAF_DEL_LAST, 811 /* TC_HTB_LEAF_DEL_LAST, but delete driver data on hardware errors. */ 812 TC_HTB_LEAF_DEL_LAST_FORCE, 813 /* Modify parameters of a node. */ 814 TC_HTB_NODE_MODIFY, 815 816 /* Class qdisc */ 817 TC_HTB_LEAF_QUERY_QUEUE, /* Query qid by classid. */ 818 }; 819 820 struct tc_htb_qopt_offload { 821 struct netlink_ext_ack *extack; 822 enum tc_htb_command command; 823 u16 classid; 824 u32 parent_classid; 825 u16 qid; 826 u16 moved_qid; 827 u64 rate; 828 u64 ceil; 829 }; 830 831 #define TC_HTB_CLASSID_ROOT U32_MAX 832 833 enum tc_red_command { 834 TC_RED_REPLACE, 835 TC_RED_DESTROY, 836 TC_RED_STATS, 837 TC_RED_XSTATS, 838 TC_RED_GRAFT, 839 }; 840 841 struct tc_red_qopt_offload_params { 842 u32 min; 843 u32 max; 844 u32 probability; 845 u32 limit; 846 bool is_ecn; 847 bool is_harddrop; 848 bool is_nodrop; 849 struct gnet_stats_queue *qstats; 850 }; 851 852 struct tc_red_qopt_offload { 853 enum tc_red_command command; 854 u32 handle; 855 u32 parent; 856 union { 857 struct tc_red_qopt_offload_params set; 858 struct tc_qopt_offload_stats stats; 859 struct red_stats *xstats; 860 u32 child_handle; 861 }; 862 }; 863 864 enum tc_gred_command { 865 TC_GRED_REPLACE, 866 TC_GRED_DESTROY, 867 TC_GRED_STATS, 868 }; 869 870 struct tc_gred_vq_qopt_offload_params { 871 bool present; 872 u32 limit; 873 u32 prio; 874 u32 min; 875 u32 max; 876 bool is_ecn; 877 bool is_harddrop; 878 u32 probability; 879 /* Only need backlog, see struct tc_prio_qopt_offload_params */ 880 u32 *backlog; 881 }; 882 883 struct tc_gred_qopt_offload_params { 884 bool grio_on; 885 bool wred_on; 886 unsigned int dp_cnt; 887 unsigned int dp_def; 888 struct gnet_stats_queue *qstats; 889 struct tc_gred_vq_qopt_offload_params tab[MAX_DPs]; 890 }; 891 892 struct tc_gred_qopt_offload_stats { 893 struct gnet_stats_basic_packed bstats[MAX_DPs]; 894 struct gnet_stats_queue qstats[MAX_DPs]; 895 struct red_stats *xstats[MAX_DPs]; 896 }; 897 898 struct tc_gred_qopt_offload { 899 enum tc_gred_command command; 900 u32 handle; 901 u32 parent; 902 union { 903 struct tc_gred_qopt_offload_params set; 904 struct tc_gred_qopt_offload_stats stats; 905 }; 906 }; 907 908 enum tc_prio_command { 909 TC_PRIO_REPLACE, 910 TC_PRIO_DESTROY, 911 TC_PRIO_STATS, 912 TC_PRIO_GRAFT, 913 }; 914 915 struct tc_prio_qopt_offload_params { 916 int bands; 917 u8 priomap[TC_PRIO_MAX + 1]; 918 /* At the point of un-offloading the Qdisc, the reported backlog and 919 * qlen need to be reduced by the portion that is in HW. 920 */ 921 struct gnet_stats_queue *qstats; 922 }; 923 924 struct tc_prio_qopt_offload_graft_params { 925 u8 band; 926 u32 child_handle; 927 }; 928 929 struct tc_prio_qopt_offload { 930 enum tc_prio_command command; 931 u32 handle; 932 u32 parent; 933 union { 934 struct tc_prio_qopt_offload_params replace_params; 935 struct tc_qopt_offload_stats stats; 936 struct tc_prio_qopt_offload_graft_params graft_params; 937 }; 938 }; 939 940 enum tc_root_command { 941 TC_ROOT_GRAFT, 942 }; 943 944 struct tc_root_qopt_offload { 945 enum tc_root_command command; 946 u32 handle; 947 bool ingress; 948 }; 949 950 enum tc_ets_command { 951 TC_ETS_REPLACE, 952 TC_ETS_DESTROY, 953 TC_ETS_STATS, 954 TC_ETS_GRAFT, 955 }; 956 957 struct tc_ets_qopt_offload_replace_params { 958 unsigned int bands; 959 u8 priomap[TC_PRIO_MAX + 1]; 960 unsigned int quanta[TCQ_ETS_MAX_BANDS]; /* 0 for strict bands. */ 961 unsigned int weights[TCQ_ETS_MAX_BANDS]; 962 struct gnet_stats_queue *qstats; 963 }; 964 965 struct tc_ets_qopt_offload_graft_params { 966 u8 band; 967 u32 child_handle; 968 }; 969 970 struct tc_ets_qopt_offload { 971 enum tc_ets_command command; 972 u32 handle; 973 u32 parent; 974 union { 975 struct tc_ets_qopt_offload_replace_params replace_params; 976 struct tc_qopt_offload_stats stats; 977 struct tc_ets_qopt_offload_graft_params graft_params; 978 }; 979 }; 980 981 enum tc_tbf_command { 982 TC_TBF_REPLACE, 983 TC_TBF_DESTROY, 984 TC_TBF_STATS, 985 }; 986 987 struct tc_tbf_qopt_offload_replace_params { 988 struct psched_ratecfg rate; 989 u32 max_size; 990 struct gnet_stats_queue *qstats; 991 }; 992 993 struct tc_tbf_qopt_offload { 994 enum tc_tbf_command command; 995 u32 handle; 996 u32 parent; 997 union { 998 struct tc_tbf_qopt_offload_replace_params replace_params; 999 struct tc_qopt_offload_stats stats; 1000 }; 1001 }; 1002 1003 enum tc_fifo_command { 1004 TC_FIFO_REPLACE, 1005 TC_FIFO_DESTROY, 1006 TC_FIFO_STATS, 1007 }; 1008 1009 struct tc_fifo_qopt_offload { 1010 enum tc_fifo_command command; 1011 u32 handle; 1012 u32 parent; 1013 union { 1014 struct tc_qopt_offload_stats stats; 1015 }; 1016 }; 1017 1018 #endif 1019