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 208ae70032SJiri Pirko #ifdef CONFIG_NET_CLS 21367a8ce8SWANG Cong struct tcf_chain *tcf_chain_get(struct tcf_block *block, u32 chain_index, 22367a8ce8SWANG Cong bool create); 235bc17018SJiri Pirko void tcf_chain_put(struct tcf_chain *chain); 246529eabaSJiri Pirko int tcf_block_get(struct tcf_block **p_block, 256529eabaSJiri Pirko struct tcf_proto __rcu **p_filter_chain); 266529eabaSJiri Pirko void tcf_block_put(struct tcf_block *block); 2787d83093SJiri Pirko int tcf_classify(struct sk_buff *skb, const struct tcf_proto *tp, 2887d83093SJiri Pirko struct tcf_result *res, bool compat_mode); 2987d83093SJiri Pirko 308ae70032SJiri Pirko #else 316529eabaSJiri Pirko static inline 326529eabaSJiri Pirko int tcf_block_get(struct tcf_block **p_block, 336529eabaSJiri Pirko struct tcf_proto __rcu **p_filter_chain) 346529eabaSJiri Pirko { 356529eabaSJiri Pirko return 0; 366529eabaSJiri Pirko } 376529eabaSJiri Pirko 386529eabaSJiri Pirko static inline void tcf_block_put(struct tcf_block *block) 398ae70032SJiri Pirko { 408ae70032SJiri Pirko } 4187d83093SJiri Pirko 4287d83093SJiri Pirko static inline int tcf_classify(struct sk_buff *skb, const struct tcf_proto *tp, 4387d83093SJiri Pirko struct tcf_result *res, bool compat_mode) 4487d83093SJiri Pirko { 4587d83093SJiri Pirko return TC_ACT_UNSPEC; 4687d83093SJiri Pirko } 478ae70032SJiri Pirko #endif 48cf1facdaSJiri Pirko 491da177e4SLinus Torvalds static inline unsigned long 501da177e4SLinus Torvalds __cls_set_class(unsigned long *clp, unsigned long cl) 511da177e4SLinus Torvalds { 52a0efb80cSWANG Cong return xchg(clp, cl); 531da177e4SLinus Torvalds } 541da177e4SLinus Torvalds 551da177e4SLinus Torvalds static inline unsigned long 561da177e4SLinus Torvalds cls_set_class(struct tcf_proto *tp, unsigned long *clp, 571da177e4SLinus Torvalds unsigned long cl) 581da177e4SLinus Torvalds { 591da177e4SLinus Torvalds unsigned long old_cl; 601da177e4SLinus Torvalds 611da177e4SLinus Torvalds tcf_tree_lock(tp); 621da177e4SLinus Torvalds old_cl = __cls_set_class(clp, cl); 631da177e4SLinus Torvalds tcf_tree_unlock(tp); 641da177e4SLinus Torvalds 651da177e4SLinus Torvalds return old_cl; 661da177e4SLinus Torvalds } 671da177e4SLinus Torvalds 681da177e4SLinus Torvalds static inline void 691da177e4SLinus Torvalds tcf_bind_filter(struct tcf_proto *tp, struct tcf_result *r, unsigned long base) 701da177e4SLinus Torvalds { 711da177e4SLinus Torvalds unsigned long cl; 721da177e4SLinus Torvalds 731da177e4SLinus Torvalds cl = tp->q->ops->cl_ops->bind_tcf(tp->q, base, r->classid); 741da177e4SLinus Torvalds cl = cls_set_class(tp, &r->class, cl); 751da177e4SLinus Torvalds if (cl) 761da177e4SLinus Torvalds tp->q->ops->cl_ops->unbind_tcf(tp->q, cl); 771da177e4SLinus Torvalds } 781da177e4SLinus Torvalds 791da177e4SLinus Torvalds static inline void 801da177e4SLinus Torvalds tcf_unbind_filter(struct tcf_proto *tp, struct tcf_result *r) 811da177e4SLinus Torvalds { 821da177e4SLinus Torvalds unsigned long cl; 831da177e4SLinus Torvalds 841da177e4SLinus Torvalds if ((cl = __cls_set_class(&r->class, 0)) != 0) 851da177e4SLinus Torvalds tp->q->ops->cl_ops->unbind_tcf(tp->q, cl); 861da177e4SLinus Torvalds } 871da177e4SLinus Torvalds 88fd2c3ef7SEric Dumazet struct tcf_exts { 891da177e4SLinus Torvalds #ifdef CONFIG_NET_CLS_ACT 9033be6271SWANG Cong __u32 type; /* for backward compat(TCA_OLD_COMPAT) */ 9122dc13c8SWANG Cong int nr_actions; 9222dc13c8SWANG Cong struct tc_action **actions; 931da177e4SLinus Torvalds #endif 941da177e4SLinus Torvalds /* Map to export classifier specific extension TLV types to the 951da177e4SLinus Torvalds * generic extensions API. Unsupported extensions must be set to 0. 961da177e4SLinus Torvalds */ 971da177e4SLinus Torvalds int action; 981da177e4SLinus Torvalds int police; 991da177e4SLinus Torvalds }; 1001da177e4SLinus Torvalds 101b9a24bb7SWANG Cong static inline int tcf_exts_init(struct tcf_exts *exts, int action, int police) 10233be6271SWANG Cong { 10333be6271SWANG Cong #ifdef CONFIG_NET_CLS_ACT 1045da57f42SWANG Cong exts->type = 0; 10522dc13c8SWANG Cong exts->nr_actions = 0; 10622dc13c8SWANG Cong exts->actions = kcalloc(TCA_ACT_MAX_PRIO, sizeof(struct tc_action *), 10722dc13c8SWANG Cong GFP_KERNEL); 108b9a24bb7SWANG Cong if (!exts->actions) 109b9a24bb7SWANG Cong return -ENOMEM; 11033be6271SWANG Cong #endif 1115da57f42SWANG Cong exts->action = action; 1125da57f42SWANG Cong exts->police = police; 113b9a24bb7SWANG Cong return 0; 11433be6271SWANG Cong } 11533be6271SWANG Cong 1161da177e4SLinus Torvalds /** 1171da177e4SLinus Torvalds * tcf_exts_is_predicative - check if a predicative extension is present 1181da177e4SLinus Torvalds * @exts: tc filter extensions handle 1191da177e4SLinus Torvalds * 1201da177e4SLinus Torvalds * Returns 1 if a predicative extension is present, i.e. an extension which 1211da177e4SLinus Torvalds * might cause further actions and thus overrule the regular tcf_result. 1221da177e4SLinus Torvalds */ 1231da177e4SLinus Torvalds static inline int 1241da177e4SLinus Torvalds tcf_exts_is_predicative(struct tcf_exts *exts) 1251da177e4SLinus Torvalds { 1261da177e4SLinus Torvalds #ifdef CONFIG_NET_CLS_ACT 12722dc13c8SWANG Cong return exts->nr_actions; 1281da177e4SLinus Torvalds #else 1291da177e4SLinus Torvalds return 0; 1301da177e4SLinus Torvalds #endif 1311da177e4SLinus Torvalds } 1321da177e4SLinus Torvalds 1331da177e4SLinus Torvalds /** 1341da177e4SLinus Torvalds * tcf_exts_is_available - check if at least one extension is present 1351da177e4SLinus Torvalds * @exts: tc filter extensions handle 1361da177e4SLinus Torvalds * 1371da177e4SLinus Torvalds * Returns 1 if at least one extension is present. 1381da177e4SLinus Torvalds */ 1391da177e4SLinus Torvalds static inline int 1401da177e4SLinus Torvalds tcf_exts_is_available(struct tcf_exts *exts) 1411da177e4SLinus Torvalds { 1421da177e4SLinus Torvalds /* All non-predicative extensions must be added here. */ 1431da177e4SLinus Torvalds return tcf_exts_is_predicative(exts); 1441da177e4SLinus Torvalds } 1451da177e4SLinus Torvalds 14622dc13c8SWANG Cong static inline void tcf_exts_to_list(const struct tcf_exts *exts, 14722dc13c8SWANG Cong struct list_head *actions) 14822dc13c8SWANG Cong { 14922dc13c8SWANG Cong #ifdef CONFIG_NET_CLS_ACT 15022dc13c8SWANG Cong int i; 15122dc13c8SWANG Cong 15222dc13c8SWANG Cong for (i = 0; i < exts->nr_actions; i++) { 15322dc13c8SWANG Cong struct tc_action *a = exts->actions[i]; 15422dc13c8SWANG Cong 155fa5effe7SHadar Hen Zion list_add_tail(&a->list, actions); 15622dc13c8SWANG Cong } 15722dc13c8SWANG Cong #endif 15822dc13c8SWANG Cong } 15922dc13c8SWANG Cong 160d897a638SJakub Kicinski static inline void 161d897a638SJakub Kicinski tcf_exts_stats_update(const struct tcf_exts *exts, 162d897a638SJakub Kicinski u64 bytes, u64 packets, u64 lastuse) 163d897a638SJakub Kicinski { 164d897a638SJakub Kicinski #ifdef CONFIG_NET_CLS_ACT 165d897a638SJakub Kicinski int i; 166d897a638SJakub Kicinski 167d897a638SJakub Kicinski preempt_disable(); 168d897a638SJakub Kicinski 169d897a638SJakub Kicinski for (i = 0; i < exts->nr_actions; i++) { 170d897a638SJakub Kicinski struct tc_action *a = exts->actions[i]; 171d897a638SJakub Kicinski 172d897a638SJakub Kicinski tcf_action_stats_update(a, bytes, packets, lastuse); 173d897a638SJakub Kicinski } 174d897a638SJakub Kicinski 175d897a638SJakub Kicinski preempt_enable(); 176d897a638SJakub Kicinski #endif 177d897a638SJakub Kicinski } 178d897a638SJakub Kicinski 1791da177e4SLinus Torvalds /** 1803bcc0cecSJiri Pirko * tcf_exts_has_actions - check if at least one action is present 1813bcc0cecSJiri Pirko * @exts: tc filter extensions handle 1823bcc0cecSJiri Pirko * 1833bcc0cecSJiri Pirko * Returns true if at least one action is present. 1843bcc0cecSJiri Pirko */ 1853bcc0cecSJiri Pirko static inline bool tcf_exts_has_actions(struct tcf_exts *exts) 1863bcc0cecSJiri Pirko { 1872734437eSWANG Cong #ifdef CONFIG_NET_CLS_ACT 1883bcc0cecSJiri Pirko return exts->nr_actions; 1893bcc0cecSJiri Pirko #else 1903bcc0cecSJiri Pirko return false; 1913bcc0cecSJiri Pirko #endif 1923bcc0cecSJiri Pirko } 1932734437eSWANG Cong 1943bcc0cecSJiri Pirko /** 1953bcc0cecSJiri Pirko * tcf_exts_has_one_action - check if exactly one action is present 1963bcc0cecSJiri Pirko * @exts: tc filter extensions handle 1973bcc0cecSJiri Pirko * 1983bcc0cecSJiri Pirko * Returns true if exactly one action is present. 1993bcc0cecSJiri Pirko */ 2003bcc0cecSJiri Pirko static inline bool tcf_exts_has_one_action(struct tcf_exts *exts) 2013bcc0cecSJiri Pirko { 2023bcc0cecSJiri Pirko #ifdef CONFIG_NET_CLS_ACT 2033bcc0cecSJiri Pirko return exts->nr_actions == 1; 2043bcc0cecSJiri Pirko #else 2053bcc0cecSJiri Pirko return false; 2063bcc0cecSJiri Pirko #endif 2073bcc0cecSJiri Pirko } 2082734437eSWANG Cong 209af69afc5SJiri Pirko /** 210af69afc5SJiri Pirko * tcf_exts_exec - execute tc filter extensions 211af69afc5SJiri Pirko * @skb: socket buffer 212af69afc5SJiri Pirko * @exts: tc filter extensions handle 213af69afc5SJiri Pirko * @res: desired result 214af69afc5SJiri Pirko * 215af69afc5SJiri Pirko * Executes all configured extensions. Returns 0 on a normal execution, 216af69afc5SJiri Pirko * a negative number if the filter must be considered unmatched or 217af69afc5SJiri Pirko * a positive action code (TC_ACT_*) which must be returned to the 218af69afc5SJiri Pirko * underlying layer. 219af69afc5SJiri Pirko */ 220af69afc5SJiri Pirko static inline int 221af69afc5SJiri Pirko tcf_exts_exec(struct sk_buff *skb, struct tcf_exts *exts, 222af69afc5SJiri Pirko struct tcf_result *res) 223af69afc5SJiri Pirko { 224af69afc5SJiri Pirko #ifdef CONFIG_NET_CLS_ACT 225af69afc5SJiri Pirko if (tcf_exts_has_actions(exts)) 226af69afc5SJiri Pirko return tcf_action_exec(skb, exts->actions, exts->nr_actions, 227af69afc5SJiri Pirko res); 228af69afc5SJiri Pirko #endif 229af69afc5SJiri Pirko return 0; 230af69afc5SJiri Pirko } 231af69afc5SJiri Pirko 2325c15257fSJoe Perches int tcf_exts_validate(struct net *net, struct tcf_proto *tp, 233c1b52739SBenjamin LaHaise struct nlattr **tb, struct nlattr *rate_tlv, 2342f7ef2f8SCong Wang struct tcf_exts *exts, bool ovr); 23518d0264fSWANG Cong void tcf_exts_destroy(struct tcf_exts *exts); 2365c15257fSJoe Perches void tcf_exts_change(struct tcf_proto *tp, struct tcf_exts *dst, 2371da177e4SLinus Torvalds struct tcf_exts *src); 2385da57f42SWANG Cong int tcf_exts_dump(struct sk_buff *skb, struct tcf_exts *exts); 2395da57f42SWANG Cong int tcf_exts_dump_stats(struct sk_buff *skb, struct tcf_exts *exts); 2407091d8c7SHadar Hen Zion int tcf_exts_get_dev(struct net_device *dev, struct tcf_exts *exts, 2417091d8c7SHadar Hen Zion struct net_device **hw_dev); 2421da177e4SLinus Torvalds 2431da177e4SLinus Torvalds /** 2441da177e4SLinus Torvalds * struct tcf_pkt_info - packet information 2451da177e4SLinus Torvalds */ 246fd2c3ef7SEric Dumazet struct tcf_pkt_info { 2471da177e4SLinus Torvalds unsigned char * ptr; 2481da177e4SLinus Torvalds int nexthdr; 2491da177e4SLinus Torvalds }; 2501da177e4SLinus Torvalds 2511da177e4SLinus Torvalds #ifdef CONFIG_NET_EMATCH 2521da177e4SLinus Torvalds 2531da177e4SLinus Torvalds struct tcf_ematch_ops; 2541da177e4SLinus Torvalds 2551da177e4SLinus Torvalds /** 2561da177e4SLinus Torvalds * struct tcf_ematch - extended match (ematch) 2571da177e4SLinus Torvalds * 2581da177e4SLinus Torvalds * @matchid: identifier to allow userspace to reidentify a match 2591da177e4SLinus Torvalds * @flags: flags specifying attributes and the relation to other matches 2601da177e4SLinus Torvalds * @ops: the operations lookup table of the corresponding ematch module 2611da177e4SLinus Torvalds * @datalen: length of the ematch specific configuration data 2621da177e4SLinus Torvalds * @data: ematch specific data 2631da177e4SLinus Torvalds */ 264fd2c3ef7SEric Dumazet struct tcf_ematch { 2651da177e4SLinus Torvalds struct tcf_ematch_ops * ops; 2661da177e4SLinus Torvalds unsigned long data; 2671da177e4SLinus Torvalds unsigned int datalen; 2681da177e4SLinus Torvalds u16 matchid; 2691da177e4SLinus Torvalds u16 flags; 27082a470f1SJohn Fastabend struct net *net; 2711da177e4SLinus Torvalds }; 2721da177e4SLinus Torvalds 2731da177e4SLinus Torvalds static inline int tcf_em_is_container(struct tcf_ematch *em) 2741da177e4SLinus Torvalds { 2751da177e4SLinus Torvalds return !em->ops; 2761da177e4SLinus Torvalds } 2771da177e4SLinus Torvalds 2781da177e4SLinus Torvalds static inline int tcf_em_is_simple(struct tcf_ematch *em) 2791da177e4SLinus Torvalds { 2801da177e4SLinus Torvalds return em->flags & TCF_EM_SIMPLE; 2811da177e4SLinus Torvalds } 2821da177e4SLinus Torvalds 2831da177e4SLinus Torvalds static inline int tcf_em_is_inverted(struct tcf_ematch *em) 2841da177e4SLinus Torvalds { 2851da177e4SLinus Torvalds return em->flags & TCF_EM_INVERT; 2861da177e4SLinus Torvalds } 2871da177e4SLinus Torvalds 2881da177e4SLinus Torvalds static inline int tcf_em_last_match(struct tcf_ematch *em) 2891da177e4SLinus Torvalds { 2901da177e4SLinus Torvalds return (em->flags & TCF_EM_REL_MASK) == TCF_EM_REL_END; 2911da177e4SLinus Torvalds } 2921da177e4SLinus Torvalds 2931da177e4SLinus Torvalds static inline int tcf_em_early_end(struct tcf_ematch *em, int result) 2941da177e4SLinus Torvalds { 2951da177e4SLinus Torvalds if (tcf_em_last_match(em)) 2961da177e4SLinus Torvalds return 1; 2971da177e4SLinus Torvalds 2981da177e4SLinus Torvalds if (result == 0 && em->flags & TCF_EM_REL_AND) 2991da177e4SLinus Torvalds return 1; 3001da177e4SLinus Torvalds 3011da177e4SLinus Torvalds if (result != 0 && em->flags & TCF_EM_REL_OR) 3021da177e4SLinus Torvalds return 1; 3031da177e4SLinus Torvalds 3041da177e4SLinus Torvalds return 0; 3051da177e4SLinus Torvalds } 3061da177e4SLinus Torvalds 3071da177e4SLinus Torvalds /** 3081da177e4SLinus Torvalds * struct tcf_ematch_tree - ematch tree handle 3091da177e4SLinus Torvalds * 3101da177e4SLinus Torvalds * @hdr: ematch tree header supplied by userspace 3111da177e4SLinus Torvalds * @matches: array of ematches 3121da177e4SLinus Torvalds */ 313fd2c3ef7SEric Dumazet struct tcf_ematch_tree { 3141da177e4SLinus Torvalds struct tcf_ematch_tree_hdr hdr; 3151da177e4SLinus Torvalds struct tcf_ematch * matches; 3161da177e4SLinus Torvalds 3171da177e4SLinus Torvalds }; 3181da177e4SLinus Torvalds 3191da177e4SLinus Torvalds /** 3201da177e4SLinus Torvalds * struct tcf_ematch_ops - ematch module operations 3211da177e4SLinus Torvalds * 3221da177e4SLinus Torvalds * @kind: identifier (kind) of this ematch module 3231da177e4SLinus Torvalds * @datalen: length of expected configuration data (optional) 3241da177e4SLinus Torvalds * @change: called during validation (optional) 3251da177e4SLinus Torvalds * @match: called during ematch tree evaluation, must return 1/0 3261da177e4SLinus Torvalds * @destroy: called during destroyage (optional) 3271da177e4SLinus Torvalds * @dump: called during dumping process (optional) 3281da177e4SLinus Torvalds * @owner: owner, must be set to THIS_MODULE 3291da177e4SLinus Torvalds * @link: link to previous/next ematch module (internal use) 3301da177e4SLinus Torvalds */ 331fd2c3ef7SEric Dumazet struct tcf_ematch_ops { 3321da177e4SLinus Torvalds int kind; 3331da177e4SLinus Torvalds int datalen; 33482a470f1SJohn Fastabend int (*change)(struct net *net, void *, 3351da177e4SLinus Torvalds int, struct tcf_ematch *); 3361da177e4SLinus Torvalds int (*match)(struct sk_buff *, struct tcf_ematch *, 3371da177e4SLinus Torvalds struct tcf_pkt_info *); 33882a470f1SJohn Fastabend void (*destroy)(struct tcf_ematch *); 3391da177e4SLinus Torvalds int (*dump)(struct sk_buff *, struct tcf_ematch *); 3401da177e4SLinus Torvalds struct module *owner; 3411da177e4SLinus Torvalds struct list_head link; 3421da177e4SLinus Torvalds }; 3431da177e4SLinus Torvalds 3445c15257fSJoe Perches int tcf_em_register(struct tcf_ematch_ops *); 3455c15257fSJoe Perches void tcf_em_unregister(struct tcf_ematch_ops *); 3465c15257fSJoe Perches int tcf_em_tree_validate(struct tcf_proto *, struct nlattr *, 3471da177e4SLinus Torvalds struct tcf_ematch_tree *); 34882a470f1SJohn Fastabend void tcf_em_tree_destroy(struct tcf_ematch_tree *); 3495c15257fSJoe Perches int tcf_em_tree_dump(struct sk_buff *, struct tcf_ematch_tree *, int); 3505c15257fSJoe Perches int __tcf_em_tree_match(struct sk_buff *, struct tcf_ematch_tree *, 3511da177e4SLinus Torvalds struct tcf_pkt_info *); 3521da177e4SLinus Torvalds 3531da177e4SLinus Torvalds /** 3541da177e4SLinus Torvalds * tcf_em_tree_match - evaulate an ematch tree 3551da177e4SLinus Torvalds * 3561da177e4SLinus Torvalds * @skb: socket buffer of the packet in question 3571da177e4SLinus Torvalds * @tree: ematch tree to be used for evaluation 3581da177e4SLinus Torvalds * @info: packet information examined by classifier 3591da177e4SLinus Torvalds * 3601da177e4SLinus Torvalds * This function matches @skb against the ematch tree in @tree by going 3611da177e4SLinus Torvalds * through all ematches respecting their logic relations returning 3621da177e4SLinus Torvalds * as soon as the result is obvious. 3631da177e4SLinus Torvalds * 3641da177e4SLinus Torvalds * Returns 1 if the ematch tree as-one matches, no ematches are configured 3651da177e4SLinus Torvalds * or ematch is not enabled in the kernel, otherwise 0 is returned. 3661da177e4SLinus Torvalds */ 3671da177e4SLinus Torvalds static inline int tcf_em_tree_match(struct sk_buff *skb, 3681da177e4SLinus Torvalds struct tcf_ematch_tree *tree, 3691da177e4SLinus Torvalds struct tcf_pkt_info *info) 3701da177e4SLinus Torvalds { 3711da177e4SLinus Torvalds if (tree->hdr.nmatches) 3721da177e4SLinus Torvalds return __tcf_em_tree_match(skb, tree, info); 3731da177e4SLinus Torvalds else 3741da177e4SLinus Torvalds return 1; 3751da177e4SLinus Torvalds } 3761da177e4SLinus Torvalds 377db3d99c0SPatrick McHardy #define MODULE_ALIAS_TCF_EMATCH(kind) MODULE_ALIAS("ematch-kind-" __stringify(kind)) 378db3d99c0SPatrick McHardy 3791da177e4SLinus Torvalds #else /* CONFIG_NET_EMATCH */ 3801da177e4SLinus Torvalds 381fd2c3ef7SEric Dumazet struct tcf_ematch_tree { 3821da177e4SLinus Torvalds }; 3831da177e4SLinus Torvalds 3841da177e4SLinus Torvalds #define tcf_em_tree_validate(tp, tb, t) ((void)(t), 0) 38582a470f1SJohn Fastabend #define tcf_em_tree_destroy(t) do { (void)(t); } while(0) 3861da177e4SLinus Torvalds #define tcf_em_tree_dump(skb, t, tlv) (0) 3871da177e4SLinus Torvalds #define tcf_em_tree_match(skb, t, info) ((void)(info), 1) 3881da177e4SLinus Torvalds 3891da177e4SLinus Torvalds #endif /* CONFIG_NET_EMATCH */ 3901da177e4SLinus Torvalds 3911da177e4SLinus Torvalds static inline unsigned char * tcf_get_base_ptr(struct sk_buff *skb, int layer) 3921da177e4SLinus Torvalds { 3931da177e4SLinus Torvalds switch (layer) { 3941da177e4SLinus Torvalds case TCF_LAYER_LINK: 3951da177e4SLinus Torvalds return skb->data; 3961da177e4SLinus Torvalds case TCF_LAYER_NETWORK: 397d56f90a7SArnaldo Carvalho de Melo return skb_network_header(skb); 3981da177e4SLinus Torvalds case TCF_LAYER_TRANSPORT: 3999c70220bSArnaldo Carvalho de Melo return skb_transport_header(skb); 4001da177e4SLinus Torvalds } 4011da177e4SLinus Torvalds 4021da177e4SLinus Torvalds return NULL; 4031da177e4SLinus Torvalds } 4041da177e4SLinus Torvalds 405eddc9ec5SArnaldo Carvalho de Melo static inline int tcf_valid_offset(const struct sk_buff *skb, 406eddc9ec5SArnaldo Carvalho de Melo const unsigned char *ptr, const int len) 4071da177e4SLinus Torvalds { 408da521b2cSDavid S. Miller return likely((ptr + len) <= skb_tail_pointer(skb) && 409da521b2cSDavid S. Miller ptr >= skb->head && 410da521b2cSDavid S. Miller (ptr <= (ptr + len))); 4111da177e4SLinus Torvalds } 4121da177e4SLinus Torvalds 4131da177e4SLinus Torvalds #ifdef CONFIG_NET_CLS_IND 4140eeb8ffcSDenis V. Lunev #include <net/net_namespace.h> 4150eeb8ffcSDenis V. Lunev 4161da177e4SLinus Torvalds static inline int 4172519a602SWANG Cong tcf_change_indev(struct net *net, struct nlattr *indev_tlv) 4181da177e4SLinus Torvalds { 4192519a602SWANG Cong char indev[IFNAMSIZ]; 420c01003c2SPatrick McHardy struct net_device *dev; 421c01003c2SPatrick McHardy 4222519a602SWANG Cong if (nla_strlcpy(indev, indev_tlv, IFNAMSIZ) >= IFNAMSIZ) 4232519a602SWANG Cong return -EINVAL; 4242519a602SWANG Cong dev = __dev_get_by_name(net, indev); 4252519a602SWANG Cong if (!dev) 4262519a602SWANG Cong return -ENODEV; 4272519a602SWANG Cong return dev->ifindex; 4281da177e4SLinus Torvalds } 4291da177e4SLinus Torvalds 4302519a602SWANG Cong static inline bool 4312519a602SWANG Cong tcf_match_indev(struct sk_buff *skb, int ifindex) 4322519a602SWANG Cong { 4332519a602SWANG Cong if (!ifindex) 4342519a602SWANG Cong return true; 4352519a602SWANG Cong if (!skb->skb_iif) 4362519a602SWANG Cong return false; 4372519a602SWANG Cong return ifindex == skb->skb_iif; 4381da177e4SLinus Torvalds } 4391da177e4SLinus Torvalds #endif /* CONFIG_NET_CLS_IND */ 4401da177e4SLinus Torvalds 441a1b7c5fdSJohn Fastabend struct tc_cls_u32_knode { 442a1b7c5fdSJohn Fastabend struct tcf_exts *exts; 443e014860eSJohn Fastabend struct tc_u32_sel *sel; 444a1b7c5fdSJohn Fastabend u32 handle; 445a1b7c5fdSJohn Fastabend u32 val; 446a1b7c5fdSJohn Fastabend u32 mask; 447a1b7c5fdSJohn Fastabend u32 link_handle; 448e014860eSJohn Fastabend u8 fshift; 449a1b7c5fdSJohn Fastabend }; 450a1b7c5fdSJohn Fastabend 451a1b7c5fdSJohn Fastabend struct tc_cls_u32_hnode { 452a1b7c5fdSJohn Fastabend u32 handle; 453a1b7c5fdSJohn Fastabend u32 prio; 454a1b7c5fdSJohn Fastabend unsigned int divisor; 455a1b7c5fdSJohn Fastabend }; 456a1b7c5fdSJohn Fastabend 457a1b7c5fdSJohn Fastabend enum tc_clsu32_command { 458a1b7c5fdSJohn Fastabend TC_CLSU32_NEW_KNODE, 459a1b7c5fdSJohn Fastabend TC_CLSU32_REPLACE_KNODE, 460a1b7c5fdSJohn Fastabend TC_CLSU32_DELETE_KNODE, 461a1b7c5fdSJohn Fastabend TC_CLSU32_NEW_HNODE, 462a1b7c5fdSJohn Fastabend TC_CLSU32_REPLACE_HNODE, 463a1b7c5fdSJohn Fastabend TC_CLSU32_DELETE_HNODE, 464a1b7c5fdSJohn Fastabend }; 465a1b7c5fdSJohn Fastabend 466a1b7c5fdSJohn Fastabend struct tc_cls_u32_offload { 467a1b7c5fdSJohn Fastabend /* knode values */ 468a1b7c5fdSJohn Fastabend enum tc_clsu32_command command; 469a1b7c5fdSJohn Fastabend union { 470a1b7c5fdSJohn Fastabend struct tc_cls_u32_knode knode; 471a1b7c5fdSJohn Fastabend struct tc_cls_u32_hnode hnode; 472a1b7c5fdSJohn Fastabend }; 473a1b7c5fdSJohn Fastabend }; 474a1b7c5fdSJohn Fastabend 47555330f05SHadar Hen Zion static inline bool tc_can_offload(const struct net_device *dev, 47655330f05SHadar Hen Zion const struct tcf_proto *tp) 4776843e7a2SJohn Fastabend { 47892c075dbSDaniel Borkmann const struct Qdisc *sch = tp->q; 47992c075dbSDaniel Borkmann const struct Qdisc_class_ops *cops = sch->ops->cl_ops; 48092c075dbSDaniel Borkmann 4812b6ab0d3SJohn Fastabend if (!(dev->features & NETIF_F_HW_TC)) 4822b6ab0d3SJohn Fastabend return false; 4839e8ce79cSJohn Fastabend if (!dev->netdev_ops->ndo_setup_tc) 4849e8ce79cSJohn Fastabend return false; 48592c075dbSDaniel Borkmann if (cops && cops->tcf_cl_offload) 48692c075dbSDaniel Borkmann return cops->tcf_cl_offload(tp->classid); 4879e8ce79cSJohn Fastabend 4889e8ce79cSJohn Fastabend return true; 4896843e7a2SJohn Fastabend } 4906843e7a2SJohn Fastabend 49155330f05SHadar Hen Zion static inline bool tc_skip_hw(u32 flags) 49255330f05SHadar Hen Zion { 49355330f05SHadar Hen Zion return (flags & TCA_CLS_FLAGS_SKIP_HW) ? true : false; 49455330f05SHadar Hen Zion } 49555330f05SHadar Hen Zion 49655330f05SHadar Hen Zion static inline bool tc_should_offload(const struct net_device *dev, 49755330f05SHadar Hen Zion const struct tcf_proto *tp, u32 flags) 49855330f05SHadar Hen Zion { 49955330f05SHadar Hen Zion if (tc_skip_hw(flags)) 50055330f05SHadar Hen Zion return false; 50155330f05SHadar Hen Zion return tc_can_offload(dev, tp); 50255330f05SHadar Hen Zion } 50355330f05SHadar Hen Zion 504d34e3e18SSamudrala, Sridhar static inline bool tc_skip_sw(u32 flags) 505d34e3e18SSamudrala, Sridhar { 506d34e3e18SSamudrala, Sridhar return (flags & TCA_CLS_FLAGS_SKIP_SW) ? true : false; 507d34e3e18SSamudrala, Sridhar } 508d34e3e18SSamudrala, Sridhar 509d34e3e18SSamudrala, Sridhar /* SKIP_HW and SKIP_SW are mutually exclusive flags. */ 510d34e3e18SSamudrala, Sridhar static inline bool tc_flags_valid(u32 flags) 511d34e3e18SSamudrala, Sridhar { 512d34e3e18SSamudrala, Sridhar if (flags & ~(TCA_CLS_FLAGS_SKIP_HW | TCA_CLS_FLAGS_SKIP_SW)) 513d34e3e18SSamudrala, Sridhar return false; 514d34e3e18SSamudrala, Sridhar 515d34e3e18SSamudrala, Sridhar if (!(flags ^ (TCA_CLS_FLAGS_SKIP_HW | TCA_CLS_FLAGS_SKIP_SW))) 516d34e3e18SSamudrala, Sridhar return false; 517d34e3e18SSamudrala, Sridhar 518d34e3e18SSamudrala, Sridhar return true; 519d34e3e18SSamudrala, Sridhar } 520d34e3e18SSamudrala, Sridhar 521e696028aSOr Gerlitz static inline bool tc_in_hw(u32 flags) 522e696028aSOr Gerlitz { 523e696028aSOr Gerlitz return (flags & TCA_CLS_FLAGS_IN_HW) ? true : false; 524e696028aSOr Gerlitz } 525e696028aSOr Gerlitz 5265b33f488SAmir Vadai enum tc_fl_command { 5275b33f488SAmir Vadai TC_CLSFLOWER_REPLACE, 5285b33f488SAmir Vadai TC_CLSFLOWER_DESTROY, 52910cbc684SAmir Vadai TC_CLSFLOWER_STATS, 5305b33f488SAmir Vadai }; 5315b33f488SAmir Vadai 5325b33f488SAmir Vadai struct tc_cls_flower_offload { 5335b33f488SAmir Vadai enum tc_fl_command command; 53469ca05ceSJiri Pirko u32 prio; 5358208d21bSAmir Vadai unsigned long cookie; 5365b33f488SAmir Vadai struct flow_dissector *dissector; 5375b33f488SAmir Vadai struct fl_flow_key *mask; 5385b33f488SAmir Vadai struct fl_flow_key *key; 5395b33f488SAmir Vadai struct tcf_exts *exts; 5405b33f488SAmir Vadai }; 5415b33f488SAmir Vadai 542b87f7936SYotam Gigi enum tc_matchall_command { 543b87f7936SYotam Gigi TC_CLSMATCHALL_REPLACE, 544b87f7936SYotam Gigi TC_CLSMATCHALL_DESTROY, 545b87f7936SYotam Gigi }; 546b87f7936SYotam Gigi 547b87f7936SYotam Gigi struct tc_cls_matchall_offload { 548b87f7936SYotam Gigi enum tc_matchall_command command; 549b87f7936SYotam Gigi struct tcf_exts *exts; 550b87f7936SYotam Gigi unsigned long cookie; 551b87f7936SYotam Gigi }; 552b87f7936SYotam Gigi 553332ae8e2SJakub Kicinski enum tc_clsbpf_command { 554332ae8e2SJakub Kicinski TC_CLSBPF_ADD, 555332ae8e2SJakub Kicinski TC_CLSBPF_REPLACE, 556332ae8e2SJakub Kicinski TC_CLSBPF_DESTROY, 55768d64063SJakub Kicinski TC_CLSBPF_STATS, 558332ae8e2SJakub Kicinski }; 559332ae8e2SJakub Kicinski 560332ae8e2SJakub Kicinski struct tc_cls_bpf_offload { 561332ae8e2SJakub Kicinski enum tc_clsbpf_command command; 562332ae8e2SJakub Kicinski struct tcf_exts *exts; 563332ae8e2SJakub Kicinski struct bpf_prog *prog; 564332ae8e2SJakub Kicinski const char *name; 565332ae8e2SJakub Kicinski bool exts_integrated; 5660d01d45fSJakub Kicinski u32 gen_flags; 567332ae8e2SJakub Kicinski }; 568332ae8e2SJakub Kicinski 5691045ba77SJamal Hadi Salim 5701045ba77SJamal Hadi Salim /* This structure holds cookie structure that is passed from user 5711045ba77SJamal Hadi Salim * to the kernel for actions and classifiers 5721045ba77SJamal Hadi Salim */ 5731045ba77SJamal Hadi Salim struct tc_cookie { 5741045ba77SJamal Hadi Salim u8 *data; 5751045ba77SJamal Hadi Salim u32 len; 5761045ba77SJamal Hadi Salim }; 5771da177e4SLinus Torvalds #endif 578