11da177e4SLinus Torvalds #ifndef __NET_PKT_CLS_H 21da177e4SLinus Torvalds #define __NET_PKT_CLS_H 31da177e4SLinus Torvalds 41da177e4SLinus Torvalds #include <linux/pkt_cls.h> 51da177e4SLinus Torvalds #include <net/sch_generic.h> 61da177e4SLinus Torvalds #include <net/act_api.h> 71da177e4SLinus Torvalds 81da177e4SLinus Torvalds /* Basic packet classifier frontend definitions. */ 91da177e4SLinus Torvalds 10fd2c3ef7SEric Dumazet struct tcf_walker { 111da177e4SLinus Torvalds int stop; 121da177e4SLinus Torvalds int skip; 131da177e4SLinus Torvalds int count; 141da177e4SLinus Torvalds int (*fn)(struct tcf_proto *, unsigned long node, struct tcf_walker *); 151da177e4SLinus Torvalds }; 161da177e4SLinus Torvalds 175c15257fSJoe Perches int register_tcf_proto_ops(struct tcf_proto_ops *ops); 185c15257fSJoe Perches int unregister_tcf_proto_ops(struct tcf_proto_ops *ops); 191da177e4SLinus Torvalds 20cf1facdaSJiri Pirko void tcf_destroy_chain(struct tcf_proto __rcu **fl); 21cf1facdaSJiri Pirko 221da177e4SLinus Torvalds static inline unsigned long 231da177e4SLinus Torvalds __cls_set_class(unsigned long *clp, unsigned long cl) 241da177e4SLinus Torvalds { 25a0efb80cSWANG Cong return xchg(clp, cl); 261da177e4SLinus Torvalds } 271da177e4SLinus Torvalds 281da177e4SLinus Torvalds static inline unsigned long 291da177e4SLinus Torvalds cls_set_class(struct tcf_proto *tp, unsigned long *clp, 301da177e4SLinus Torvalds unsigned long cl) 311da177e4SLinus Torvalds { 321da177e4SLinus Torvalds unsigned long old_cl; 331da177e4SLinus Torvalds 341da177e4SLinus Torvalds tcf_tree_lock(tp); 351da177e4SLinus Torvalds old_cl = __cls_set_class(clp, cl); 361da177e4SLinus Torvalds tcf_tree_unlock(tp); 371da177e4SLinus Torvalds 381da177e4SLinus Torvalds return old_cl; 391da177e4SLinus Torvalds } 401da177e4SLinus Torvalds 411da177e4SLinus Torvalds static inline void 421da177e4SLinus Torvalds tcf_bind_filter(struct tcf_proto *tp, struct tcf_result *r, unsigned long base) 431da177e4SLinus Torvalds { 441da177e4SLinus Torvalds unsigned long cl; 451da177e4SLinus Torvalds 461da177e4SLinus Torvalds cl = tp->q->ops->cl_ops->bind_tcf(tp->q, base, r->classid); 471da177e4SLinus Torvalds cl = cls_set_class(tp, &r->class, cl); 481da177e4SLinus Torvalds if (cl) 491da177e4SLinus Torvalds tp->q->ops->cl_ops->unbind_tcf(tp->q, cl); 501da177e4SLinus Torvalds } 511da177e4SLinus Torvalds 521da177e4SLinus Torvalds static inline void 531da177e4SLinus Torvalds tcf_unbind_filter(struct tcf_proto *tp, struct tcf_result *r) 541da177e4SLinus Torvalds { 551da177e4SLinus Torvalds unsigned long cl; 561da177e4SLinus Torvalds 571da177e4SLinus Torvalds if ((cl = __cls_set_class(&r->class, 0)) != 0) 581da177e4SLinus Torvalds tp->q->ops->cl_ops->unbind_tcf(tp->q, cl); 591da177e4SLinus Torvalds } 601da177e4SLinus Torvalds 61fd2c3ef7SEric Dumazet struct tcf_exts { 621da177e4SLinus Torvalds #ifdef CONFIG_NET_CLS_ACT 6333be6271SWANG Cong __u32 type; /* for backward compat(TCA_OLD_COMPAT) */ 6422dc13c8SWANG Cong int nr_actions; 6522dc13c8SWANG Cong struct tc_action **actions; 661da177e4SLinus Torvalds #endif 671da177e4SLinus Torvalds /* Map to export classifier specific extension TLV types to the 681da177e4SLinus Torvalds * generic extensions API. Unsupported extensions must be set to 0. 691da177e4SLinus Torvalds */ 701da177e4SLinus Torvalds int action; 711da177e4SLinus Torvalds int police; 721da177e4SLinus Torvalds }; 731da177e4SLinus Torvalds 74b9a24bb7SWANG Cong static inline int tcf_exts_init(struct tcf_exts *exts, int action, int police) 7533be6271SWANG Cong { 7633be6271SWANG Cong #ifdef CONFIG_NET_CLS_ACT 775da57f42SWANG Cong exts->type = 0; 7822dc13c8SWANG Cong exts->nr_actions = 0; 7922dc13c8SWANG Cong exts->actions = kcalloc(TCA_ACT_MAX_PRIO, sizeof(struct tc_action *), 8022dc13c8SWANG Cong GFP_KERNEL); 81b9a24bb7SWANG Cong if (!exts->actions) 82b9a24bb7SWANG Cong return -ENOMEM; 8333be6271SWANG Cong #endif 845da57f42SWANG Cong exts->action = action; 855da57f42SWANG Cong exts->police = police; 86b9a24bb7SWANG Cong return 0; 8733be6271SWANG Cong } 8833be6271SWANG Cong 891da177e4SLinus Torvalds /** 901da177e4SLinus Torvalds * tcf_exts_is_predicative - check if a predicative extension is present 911da177e4SLinus Torvalds * @exts: tc filter extensions handle 921da177e4SLinus Torvalds * 931da177e4SLinus Torvalds * Returns 1 if a predicative extension is present, i.e. an extension which 941da177e4SLinus Torvalds * might cause further actions and thus overrule the regular tcf_result. 951da177e4SLinus Torvalds */ 961da177e4SLinus Torvalds static inline int 971da177e4SLinus Torvalds tcf_exts_is_predicative(struct tcf_exts *exts) 981da177e4SLinus Torvalds { 991da177e4SLinus Torvalds #ifdef CONFIG_NET_CLS_ACT 10022dc13c8SWANG Cong return exts->nr_actions; 1011da177e4SLinus Torvalds #else 1021da177e4SLinus Torvalds return 0; 1031da177e4SLinus Torvalds #endif 1041da177e4SLinus Torvalds } 1051da177e4SLinus Torvalds 1061da177e4SLinus Torvalds /** 1071da177e4SLinus Torvalds * tcf_exts_is_available - check if at least one extension is present 1081da177e4SLinus Torvalds * @exts: tc filter extensions handle 1091da177e4SLinus Torvalds * 1101da177e4SLinus Torvalds * Returns 1 if at least one extension is present. 1111da177e4SLinus Torvalds */ 1121da177e4SLinus Torvalds static inline int 1131da177e4SLinus Torvalds tcf_exts_is_available(struct tcf_exts *exts) 1141da177e4SLinus Torvalds { 1151da177e4SLinus Torvalds /* All non-predicative extensions must be added here. */ 1161da177e4SLinus Torvalds return tcf_exts_is_predicative(exts); 1171da177e4SLinus Torvalds } 1181da177e4SLinus Torvalds 11922dc13c8SWANG Cong static inline void tcf_exts_to_list(const struct tcf_exts *exts, 12022dc13c8SWANG Cong struct list_head *actions) 12122dc13c8SWANG Cong { 12222dc13c8SWANG Cong #ifdef CONFIG_NET_CLS_ACT 12322dc13c8SWANG Cong int i; 12422dc13c8SWANG Cong 12522dc13c8SWANG Cong for (i = 0; i < exts->nr_actions; i++) { 12622dc13c8SWANG Cong struct tc_action *a = exts->actions[i]; 12722dc13c8SWANG Cong 128fa5effe7SHadar Hen Zion list_add_tail(&a->list, actions); 12922dc13c8SWANG Cong } 13022dc13c8SWANG Cong #endif 13122dc13c8SWANG Cong } 13222dc13c8SWANG Cong 1331da177e4SLinus Torvalds /** 1341da177e4SLinus Torvalds * tcf_exts_exec - execute tc filter extensions 1351da177e4SLinus Torvalds * @skb: socket buffer 1361da177e4SLinus Torvalds * @exts: tc filter extensions handle 1371da177e4SLinus Torvalds * @res: desired result 1381da177e4SLinus Torvalds * 1391da177e4SLinus Torvalds * Executes all configured extensions. Returns 0 on a normal execution, 1401da177e4SLinus Torvalds * a negative number if the filter must be considered unmatched or 1411da177e4SLinus Torvalds * a positive action code (TC_ACT_*) which must be returned to the 1421da177e4SLinus Torvalds * underlying layer. 1431da177e4SLinus Torvalds */ 1441da177e4SLinus Torvalds static inline int 1451da177e4SLinus Torvalds tcf_exts_exec(struct sk_buff *skb, struct tcf_exts *exts, 1461da177e4SLinus Torvalds struct tcf_result *res) 1471da177e4SLinus Torvalds { 1481da177e4SLinus Torvalds #ifdef CONFIG_NET_CLS_ACT 14922dc13c8SWANG Cong if (exts->nr_actions) 15022dc13c8SWANG Cong return tcf_action_exec(skb, exts->actions, exts->nr_actions, 15122dc13c8SWANG Cong res); 1521da177e4SLinus Torvalds #endif 1531da177e4SLinus Torvalds return 0; 1541da177e4SLinus Torvalds } 1551da177e4SLinus Torvalds 1562734437eSWANG Cong #ifdef CONFIG_NET_CLS_ACT 1572734437eSWANG Cong 15822dc13c8SWANG Cong #define tc_no_actions(_exts) ((_exts)->nr_actions == 0) 15922dc13c8SWANG Cong #define tc_single_action(_exts) ((_exts)->nr_actions == 1) 1602734437eSWANG Cong 1612734437eSWANG Cong #else /* CONFIG_NET_CLS_ACT */ 1622734437eSWANG Cong 1632734437eSWANG Cong #define tc_no_actions(_exts) true 1642734437eSWANG Cong #define tc_single_action(_exts) false 1652734437eSWANG Cong 1662734437eSWANG Cong #endif /* CONFIG_NET_CLS_ACT */ 1672734437eSWANG Cong 1685c15257fSJoe Perches int tcf_exts_validate(struct net *net, struct tcf_proto *tp, 169c1b52739SBenjamin LaHaise struct nlattr **tb, struct nlattr *rate_tlv, 1702f7ef2f8SCong Wang struct tcf_exts *exts, bool ovr); 17118d0264fSWANG Cong void tcf_exts_destroy(struct tcf_exts *exts); 1725c15257fSJoe Perches void tcf_exts_change(struct tcf_proto *tp, struct tcf_exts *dst, 1731da177e4SLinus Torvalds struct tcf_exts *src); 1745da57f42SWANG Cong int tcf_exts_dump(struct sk_buff *skb, struct tcf_exts *exts); 1755da57f42SWANG Cong int tcf_exts_dump_stats(struct sk_buff *skb, struct tcf_exts *exts); 1767091d8c7SHadar Hen Zion int tcf_exts_get_dev(struct net_device *dev, struct tcf_exts *exts, 1777091d8c7SHadar Hen Zion struct net_device **hw_dev); 1781da177e4SLinus Torvalds 1791da177e4SLinus Torvalds /** 1801da177e4SLinus Torvalds * struct tcf_pkt_info - packet information 1811da177e4SLinus Torvalds */ 182fd2c3ef7SEric Dumazet struct tcf_pkt_info { 1831da177e4SLinus Torvalds unsigned char * ptr; 1841da177e4SLinus Torvalds int nexthdr; 1851da177e4SLinus Torvalds }; 1861da177e4SLinus Torvalds 1871da177e4SLinus Torvalds #ifdef CONFIG_NET_EMATCH 1881da177e4SLinus Torvalds 1891da177e4SLinus Torvalds struct tcf_ematch_ops; 1901da177e4SLinus Torvalds 1911da177e4SLinus Torvalds /** 1921da177e4SLinus Torvalds * struct tcf_ematch - extended match (ematch) 1931da177e4SLinus Torvalds * 1941da177e4SLinus Torvalds * @matchid: identifier to allow userspace to reidentify a match 1951da177e4SLinus Torvalds * @flags: flags specifying attributes and the relation to other matches 1961da177e4SLinus Torvalds * @ops: the operations lookup table of the corresponding ematch module 1971da177e4SLinus Torvalds * @datalen: length of the ematch specific configuration data 1981da177e4SLinus Torvalds * @data: ematch specific data 1991da177e4SLinus Torvalds */ 200fd2c3ef7SEric Dumazet struct tcf_ematch { 2011da177e4SLinus Torvalds struct tcf_ematch_ops * ops; 2021da177e4SLinus Torvalds unsigned long data; 2031da177e4SLinus Torvalds unsigned int datalen; 2041da177e4SLinus Torvalds u16 matchid; 2051da177e4SLinus Torvalds u16 flags; 20682a470f1SJohn Fastabend struct net *net; 2071da177e4SLinus Torvalds }; 2081da177e4SLinus Torvalds 2091da177e4SLinus Torvalds static inline int tcf_em_is_container(struct tcf_ematch *em) 2101da177e4SLinus Torvalds { 2111da177e4SLinus Torvalds return !em->ops; 2121da177e4SLinus Torvalds } 2131da177e4SLinus Torvalds 2141da177e4SLinus Torvalds static inline int tcf_em_is_simple(struct tcf_ematch *em) 2151da177e4SLinus Torvalds { 2161da177e4SLinus Torvalds return em->flags & TCF_EM_SIMPLE; 2171da177e4SLinus Torvalds } 2181da177e4SLinus Torvalds 2191da177e4SLinus Torvalds static inline int tcf_em_is_inverted(struct tcf_ematch *em) 2201da177e4SLinus Torvalds { 2211da177e4SLinus Torvalds return em->flags & TCF_EM_INVERT; 2221da177e4SLinus Torvalds } 2231da177e4SLinus Torvalds 2241da177e4SLinus Torvalds static inline int tcf_em_last_match(struct tcf_ematch *em) 2251da177e4SLinus Torvalds { 2261da177e4SLinus Torvalds return (em->flags & TCF_EM_REL_MASK) == TCF_EM_REL_END; 2271da177e4SLinus Torvalds } 2281da177e4SLinus Torvalds 2291da177e4SLinus Torvalds static inline int tcf_em_early_end(struct tcf_ematch *em, int result) 2301da177e4SLinus Torvalds { 2311da177e4SLinus Torvalds if (tcf_em_last_match(em)) 2321da177e4SLinus Torvalds return 1; 2331da177e4SLinus Torvalds 2341da177e4SLinus Torvalds if (result == 0 && em->flags & TCF_EM_REL_AND) 2351da177e4SLinus Torvalds return 1; 2361da177e4SLinus Torvalds 2371da177e4SLinus Torvalds if (result != 0 && em->flags & TCF_EM_REL_OR) 2381da177e4SLinus Torvalds return 1; 2391da177e4SLinus Torvalds 2401da177e4SLinus Torvalds return 0; 2411da177e4SLinus Torvalds } 2421da177e4SLinus Torvalds 2431da177e4SLinus Torvalds /** 2441da177e4SLinus Torvalds * struct tcf_ematch_tree - ematch tree handle 2451da177e4SLinus Torvalds * 2461da177e4SLinus Torvalds * @hdr: ematch tree header supplied by userspace 2471da177e4SLinus Torvalds * @matches: array of ematches 2481da177e4SLinus Torvalds */ 249fd2c3ef7SEric Dumazet struct tcf_ematch_tree { 2501da177e4SLinus Torvalds struct tcf_ematch_tree_hdr hdr; 2511da177e4SLinus Torvalds struct tcf_ematch * matches; 2521da177e4SLinus Torvalds 2531da177e4SLinus Torvalds }; 2541da177e4SLinus Torvalds 2551da177e4SLinus Torvalds /** 2561da177e4SLinus Torvalds * struct tcf_ematch_ops - ematch module operations 2571da177e4SLinus Torvalds * 2581da177e4SLinus Torvalds * @kind: identifier (kind) of this ematch module 2591da177e4SLinus Torvalds * @datalen: length of expected configuration data (optional) 2601da177e4SLinus Torvalds * @change: called during validation (optional) 2611da177e4SLinus Torvalds * @match: called during ematch tree evaluation, must return 1/0 2621da177e4SLinus Torvalds * @destroy: called during destroyage (optional) 2631da177e4SLinus Torvalds * @dump: called during dumping process (optional) 2641da177e4SLinus Torvalds * @owner: owner, must be set to THIS_MODULE 2651da177e4SLinus Torvalds * @link: link to previous/next ematch module (internal use) 2661da177e4SLinus Torvalds */ 267fd2c3ef7SEric Dumazet struct tcf_ematch_ops { 2681da177e4SLinus Torvalds int kind; 2691da177e4SLinus Torvalds int datalen; 27082a470f1SJohn Fastabend int (*change)(struct net *net, void *, 2711da177e4SLinus Torvalds int, struct tcf_ematch *); 2721da177e4SLinus Torvalds int (*match)(struct sk_buff *, struct tcf_ematch *, 2731da177e4SLinus Torvalds struct tcf_pkt_info *); 27482a470f1SJohn Fastabend void (*destroy)(struct tcf_ematch *); 2751da177e4SLinus Torvalds int (*dump)(struct sk_buff *, struct tcf_ematch *); 2761da177e4SLinus Torvalds struct module *owner; 2771da177e4SLinus Torvalds struct list_head link; 2781da177e4SLinus Torvalds }; 2791da177e4SLinus Torvalds 2805c15257fSJoe Perches int tcf_em_register(struct tcf_ematch_ops *); 2815c15257fSJoe Perches void tcf_em_unregister(struct tcf_ematch_ops *); 2825c15257fSJoe Perches int tcf_em_tree_validate(struct tcf_proto *, struct nlattr *, 2831da177e4SLinus Torvalds struct tcf_ematch_tree *); 28482a470f1SJohn Fastabend void tcf_em_tree_destroy(struct tcf_ematch_tree *); 2855c15257fSJoe Perches int tcf_em_tree_dump(struct sk_buff *, struct tcf_ematch_tree *, int); 2865c15257fSJoe Perches int __tcf_em_tree_match(struct sk_buff *, struct tcf_ematch_tree *, 2871da177e4SLinus Torvalds struct tcf_pkt_info *); 2881da177e4SLinus Torvalds 2891da177e4SLinus Torvalds /** 2901da177e4SLinus Torvalds * tcf_em_tree_change - replace ematch tree of a running classifier 2911da177e4SLinus Torvalds * 2921da177e4SLinus Torvalds * @tp: classifier kind handle 2931da177e4SLinus Torvalds * @dst: destination ematch tree variable 2941da177e4SLinus Torvalds * @src: source ematch tree (temporary tree from tcf_em_tree_validate) 2951da177e4SLinus Torvalds * 2961da177e4SLinus Torvalds * This functions replaces the ematch tree in @dst with the ematch 2971da177e4SLinus Torvalds * tree in @src. The classifier in charge of the ematch tree may be 2981da177e4SLinus Torvalds * running. 2991da177e4SLinus Torvalds */ 3001da177e4SLinus Torvalds static inline void tcf_em_tree_change(struct tcf_proto *tp, 3011da177e4SLinus Torvalds struct tcf_ematch_tree *dst, 3021da177e4SLinus Torvalds struct tcf_ematch_tree *src) 3031da177e4SLinus Torvalds { 3041da177e4SLinus Torvalds tcf_tree_lock(tp); 3051da177e4SLinus Torvalds memcpy(dst, src, sizeof(*dst)); 3061da177e4SLinus Torvalds tcf_tree_unlock(tp); 3071da177e4SLinus Torvalds } 3081da177e4SLinus Torvalds 3091da177e4SLinus Torvalds /** 3101da177e4SLinus Torvalds * tcf_em_tree_match - evaulate an ematch tree 3111da177e4SLinus Torvalds * 3121da177e4SLinus Torvalds * @skb: socket buffer of the packet in question 3131da177e4SLinus Torvalds * @tree: ematch tree to be used for evaluation 3141da177e4SLinus Torvalds * @info: packet information examined by classifier 3151da177e4SLinus Torvalds * 3161da177e4SLinus Torvalds * This function matches @skb against the ematch tree in @tree by going 3171da177e4SLinus Torvalds * through all ematches respecting their logic relations returning 3181da177e4SLinus Torvalds * as soon as the result is obvious. 3191da177e4SLinus Torvalds * 3201da177e4SLinus Torvalds * Returns 1 if the ematch tree as-one matches, no ematches are configured 3211da177e4SLinus Torvalds * or ematch is not enabled in the kernel, otherwise 0 is returned. 3221da177e4SLinus Torvalds */ 3231da177e4SLinus Torvalds static inline int tcf_em_tree_match(struct sk_buff *skb, 3241da177e4SLinus Torvalds struct tcf_ematch_tree *tree, 3251da177e4SLinus Torvalds struct tcf_pkt_info *info) 3261da177e4SLinus Torvalds { 3271da177e4SLinus Torvalds if (tree->hdr.nmatches) 3281da177e4SLinus Torvalds return __tcf_em_tree_match(skb, tree, info); 3291da177e4SLinus Torvalds else 3301da177e4SLinus Torvalds return 1; 3311da177e4SLinus Torvalds } 3321da177e4SLinus Torvalds 333db3d99c0SPatrick McHardy #define MODULE_ALIAS_TCF_EMATCH(kind) MODULE_ALIAS("ematch-kind-" __stringify(kind)) 334db3d99c0SPatrick McHardy 3351da177e4SLinus Torvalds #else /* CONFIG_NET_EMATCH */ 3361da177e4SLinus Torvalds 337fd2c3ef7SEric Dumazet struct tcf_ematch_tree { 3381da177e4SLinus Torvalds }; 3391da177e4SLinus Torvalds 3401da177e4SLinus Torvalds #define tcf_em_tree_validate(tp, tb, t) ((void)(t), 0) 34182a470f1SJohn Fastabend #define tcf_em_tree_destroy(t) do { (void)(t); } while(0) 3421da177e4SLinus Torvalds #define tcf_em_tree_dump(skb, t, tlv) (0) 3431da177e4SLinus Torvalds #define tcf_em_tree_change(tp, dst, src) do { } while(0) 3441da177e4SLinus Torvalds #define tcf_em_tree_match(skb, t, info) ((void)(info), 1) 3451da177e4SLinus Torvalds 3461da177e4SLinus Torvalds #endif /* CONFIG_NET_EMATCH */ 3471da177e4SLinus Torvalds 3481da177e4SLinus Torvalds static inline unsigned char * tcf_get_base_ptr(struct sk_buff *skb, int layer) 3491da177e4SLinus Torvalds { 3501da177e4SLinus Torvalds switch (layer) { 3511da177e4SLinus Torvalds case TCF_LAYER_LINK: 3521da177e4SLinus Torvalds return skb->data; 3531da177e4SLinus Torvalds case TCF_LAYER_NETWORK: 354d56f90a7SArnaldo Carvalho de Melo return skb_network_header(skb); 3551da177e4SLinus Torvalds case TCF_LAYER_TRANSPORT: 3569c70220bSArnaldo Carvalho de Melo return skb_transport_header(skb); 3571da177e4SLinus Torvalds } 3581da177e4SLinus Torvalds 3591da177e4SLinus Torvalds return NULL; 3601da177e4SLinus Torvalds } 3611da177e4SLinus Torvalds 362eddc9ec5SArnaldo Carvalho de Melo static inline int tcf_valid_offset(const struct sk_buff *skb, 363eddc9ec5SArnaldo Carvalho de Melo const unsigned char *ptr, const int len) 3641da177e4SLinus Torvalds { 365da521b2cSDavid S. Miller return likely((ptr + len) <= skb_tail_pointer(skb) && 366da521b2cSDavid S. Miller ptr >= skb->head && 367da521b2cSDavid S. Miller (ptr <= (ptr + len))); 3681da177e4SLinus Torvalds } 3691da177e4SLinus Torvalds 3701da177e4SLinus Torvalds #ifdef CONFIG_NET_CLS_IND 3710eeb8ffcSDenis V. Lunev #include <net/net_namespace.h> 3720eeb8ffcSDenis V. Lunev 3731da177e4SLinus Torvalds static inline int 3742519a602SWANG Cong tcf_change_indev(struct net *net, struct nlattr *indev_tlv) 3751da177e4SLinus Torvalds { 3762519a602SWANG Cong char indev[IFNAMSIZ]; 377c01003c2SPatrick McHardy struct net_device *dev; 378c01003c2SPatrick McHardy 3792519a602SWANG Cong if (nla_strlcpy(indev, indev_tlv, IFNAMSIZ) >= IFNAMSIZ) 3802519a602SWANG Cong return -EINVAL; 3812519a602SWANG Cong dev = __dev_get_by_name(net, indev); 3822519a602SWANG Cong if (!dev) 3832519a602SWANG Cong return -ENODEV; 3842519a602SWANG Cong return dev->ifindex; 3851da177e4SLinus Torvalds } 3861da177e4SLinus Torvalds 3872519a602SWANG Cong static inline bool 3882519a602SWANG Cong tcf_match_indev(struct sk_buff *skb, int ifindex) 3892519a602SWANG Cong { 3902519a602SWANG Cong if (!ifindex) 3912519a602SWANG Cong return true; 3922519a602SWANG Cong if (!skb->skb_iif) 3932519a602SWANG Cong return false; 3942519a602SWANG Cong return ifindex == skb->skb_iif; 3951da177e4SLinus Torvalds } 3961da177e4SLinus Torvalds #endif /* CONFIG_NET_CLS_IND */ 3971da177e4SLinus Torvalds 398a1b7c5fdSJohn Fastabend struct tc_cls_u32_knode { 399a1b7c5fdSJohn Fastabend struct tcf_exts *exts; 400e014860eSJohn Fastabend struct tc_u32_sel *sel; 401a1b7c5fdSJohn Fastabend u32 handle; 402a1b7c5fdSJohn Fastabend u32 val; 403a1b7c5fdSJohn Fastabend u32 mask; 404a1b7c5fdSJohn Fastabend u32 link_handle; 405e014860eSJohn Fastabend u8 fshift; 406a1b7c5fdSJohn Fastabend }; 407a1b7c5fdSJohn Fastabend 408a1b7c5fdSJohn Fastabend struct tc_cls_u32_hnode { 409a1b7c5fdSJohn Fastabend u32 handle; 410a1b7c5fdSJohn Fastabend u32 prio; 411a1b7c5fdSJohn Fastabend unsigned int divisor; 412a1b7c5fdSJohn Fastabend }; 413a1b7c5fdSJohn Fastabend 414a1b7c5fdSJohn Fastabend enum tc_clsu32_command { 415a1b7c5fdSJohn Fastabend TC_CLSU32_NEW_KNODE, 416a1b7c5fdSJohn Fastabend TC_CLSU32_REPLACE_KNODE, 417a1b7c5fdSJohn Fastabend TC_CLSU32_DELETE_KNODE, 418a1b7c5fdSJohn Fastabend TC_CLSU32_NEW_HNODE, 419a1b7c5fdSJohn Fastabend TC_CLSU32_REPLACE_HNODE, 420a1b7c5fdSJohn Fastabend TC_CLSU32_DELETE_HNODE, 421a1b7c5fdSJohn Fastabend }; 422a1b7c5fdSJohn Fastabend 423a1b7c5fdSJohn Fastabend struct tc_cls_u32_offload { 424a1b7c5fdSJohn Fastabend /* knode values */ 425a1b7c5fdSJohn Fastabend enum tc_clsu32_command command; 426a1b7c5fdSJohn Fastabend union { 427a1b7c5fdSJohn Fastabend struct tc_cls_u32_knode knode; 428a1b7c5fdSJohn Fastabend struct tc_cls_u32_hnode hnode; 429a1b7c5fdSJohn Fastabend }; 430a1b7c5fdSJohn Fastabend }; 431a1b7c5fdSJohn Fastabend 43255330f05SHadar Hen Zion static inline bool tc_can_offload(const struct net_device *dev, 43355330f05SHadar Hen Zion const struct tcf_proto *tp) 4346843e7a2SJohn Fastabend { 43592c075dbSDaniel Borkmann const struct Qdisc *sch = tp->q; 43692c075dbSDaniel Borkmann const struct Qdisc_class_ops *cops = sch->ops->cl_ops; 43792c075dbSDaniel Borkmann 4382b6ab0d3SJohn Fastabend if (!(dev->features & NETIF_F_HW_TC)) 4392b6ab0d3SJohn Fastabend return false; 4409e8ce79cSJohn Fastabend if (!dev->netdev_ops->ndo_setup_tc) 4419e8ce79cSJohn Fastabend return false; 44292c075dbSDaniel Borkmann if (cops && cops->tcf_cl_offload) 44392c075dbSDaniel Borkmann return cops->tcf_cl_offload(tp->classid); 4449e8ce79cSJohn Fastabend 4459e8ce79cSJohn Fastabend return true; 4466843e7a2SJohn Fastabend } 4476843e7a2SJohn Fastabend 44855330f05SHadar Hen Zion static inline bool tc_skip_hw(u32 flags) 44955330f05SHadar Hen Zion { 45055330f05SHadar Hen Zion return (flags & TCA_CLS_FLAGS_SKIP_HW) ? true : false; 45155330f05SHadar Hen Zion } 45255330f05SHadar Hen Zion 45355330f05SHadar Hen Zion static inline bool tc_should_offload(const struct net_device *dev, 45455330f05SHadar Hen Zion const struct tcf_proto *tp, u32 flags) 45555330f05SHadar Hen Zion { 45655330f05SHadar Hen Zion if (tc_skip_hw(flags)) 45755330f05SHadar Hen Zion return false; 45855330f05SHadar Hen Zion return tc_can_offload(dev, tp); 45955330f05SHadar Hen Zion } 46055330f05SHadar Hen Zion 461d34e3e18SSamudrala, Sridhar static inline bool tc_skip_sw(u32 flags) 462d34e3e18SSamudrala, Sridhar { 463d34e3e18SSamudrala, Sridhar return (flags & TCA_CLS_FLAGS_SKIP_SW) ? true : false; 464d34e3e18SSamudrala, Sridhar } 465d34e3e18SSamudrala, Sridhar 466d34e3e18SSamudrala, Sridhar /* SKIP_HW and SKIP_SW are mutually exclusive flags. */ 467d34e3e18SSamudrala, Sridhar static inline bool tc_flags_valid(u32 flags) 468d34e3e18SSamudrala, Sridhar { 469d34e3e18SSamudrala, Sridhar if (flags & ~(TCA_CLS_FLAGS_SKIP_HW | TCA_CLS_FLAGS_SKIP_SW)) 470d34e3e18SSamudrala, Sridhar return false; 471d34e3e18SSamudrala, Sridhar 472d34e3e18SSamudrala, Sridhar if (!(flags ^ (TCA_CLS_FLAGS_SKIP_HW | TCA_CLS_FLAGS_SKIP_SW))) 473d34e3e18SSamudrala, Sridhar return false; 474d34e3e18SSamudrala, Sridhar 475d34e3e18SSamudrala, Sridhar return true; 476d34e3e18SSamudrala, Sridhar } 477d34e3e18SSamudrala, Sridhar 4785b33f488SAmir Vadai enum tc_fl_command { 4795b33f488SAmir Vadai TC_CLSFLOWER_REPLACE, 4805b33f488SAmir Vadai TC_CLSFLOWER_DESTROY, 48110cbc684SAmir Vadai TC_CLSFLOWER_STATS, 4825b33f488SAmir Vadai }; 4835b33f488SAmir Vadai 4845b33f488SAmir Vadai struct tc_cls_flower_offload { 4855b33f488SAmir Vadai enum tc_fl_command command; 48669ca05ceSJiri Pirko u32 prio; 4878208d21bSAmir Vadai unsigned long cookie; 4885b33f488SAmir Vadai struct flow_dissector *dissector; 4895b33f488SAmir Vadai struct fl_flow_key *mask; 4905b33f488SAmir Vadai struct fl_flow_key *key; 4915b33f488SAmir Vadai struct tcf_exts *exts; 4925b33f488SAmir Vadai }; 4935b33f488SAmir Vadai 494b87f7936SYotam Gigi enum tc_matchall_command { 495b87f7936SYotam Gigi TC_CLSMATCHALL_REPLACE, 496b87f7936SYotam Gigi TC_CLSMATCHALL_DESTROY, 497b87f7936SYotam Gigi }; 498b87f7936SYotam Gigi 499b87f7936SYotam Gigi struct tc_cls_matchall_offload { 500b87f7936SYotam Gigi enum tc_matchall_command command; 501b87f7936SYotam Gigi struct tcf_exts *exts; 502b87f7936SYotam Gigi unsigned long cookie; 503b87f7936SYotam Gigi }; 504b87f7936SYotam Gigi 505332ae8e2SJakub Kicinski enum tc_clsbpf_command { 506332ae8e2SJakub Kicinski TC_CLSBPF_ADD, 507332ae8e2SJakub Kicinski TC_CLSBPF_REPLACE, 508332ae8e2SJakub Kicinski TC_CLSBPF_DESTROY, 50968d64063SJakub Kicinski TC_CLSBPF_STATS, 510332ae8e2SJakub Kicinski }; 511332ae8e2SJakub Kicinski 512332ae8e2SJakub Kicinski struct tc_cls_bpf_offload { 513332ae8e2SJakub Kicinski enum tc_clsbpf_command command; 514332ae8e2SJakub Kicinski struct tcf_exts *exts; 515332ae8e2SJakub Kicinski struct bpf_prog *prog; 516332ae8e2SJakub Kicinski const char *name; 517332ae8e2SJakub Kicinski bool exts_integrated; 5180d01d45fSJakub Kicinski u32 gen_flags; 519332ae8e2SJakub Kicinski }; 520332ae8e2SJakub Kicinski 5211045ba77SJamal Hadi Salim 5221045ba77SJamal Hadi Salim /* This structure holds cookie structure that is passed from user 5231045ba77SJamal Hadi Salim * to the kernel for actions and classifiers 5241045ba77SJamal Hadi Salim */ 5251045ba77SJamal Hadi Salim struct tc_cookie { 5261045ba77SJamal Hadi Salim u8 *data; 5271045ba77SJamal Hadi Salim u32 len; 5281045ba77SJamal Hadi Salim }; 5291da177e4SLinus Torvalds #endif 530