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 11622dc13c8SWANG Cong static inline void tcf_exts_to_list(const struct tcf_exts *exts, 11722dc13c8SWANG Cong struct list_head *actions) 11822dc13c8SWANG Cong { 11922dc13c8SWANG Cong #ifdef CONFIG_NET_CLS_ACT 12022dc13c8SWANG Cong int i; 12122dc13c8SWANG Cong 12222dc13c8SWANG Cong for (i = 0; i < exts->nr_actions; i++) { 12322dc13c8SWANG Cong struct tc_action *a = exts->actions[i]; 12422dc13c8SWANG Cong 125fa5effe7SHadar Hen Zion list_add_tail(&a->list, actions); 12622dc13c8SWANG Cong } 12722dc13c8SWANG Cong #endif 12822dc13c8SWANG Cong } 12922dc13c8SWANG Cong 130d897a638SJakub Kicinski static inline void 131d897a638SJakub Kicinski tcf_exts_stats_update(const struct tcf_exts *exts, 132d897a638SJakub Kicinski u64 bytes, u64 packets, u64 lastuse) 133d897a638SJakub Kicinski { 134d897a638SJakub Kicinski #ifdef CONFIG_NET_CLS_ACT 135d897a638SJakub Kicinski int i; 136d897a638SJakub Kicinski 137d897a638SJakub Kicinski preempt_disable(); 138d897a638SJakub Kicinski 139d897a638SJakub Kicinski for (i = 0; i < exts->nr_actions; i++) { 140d897a638SJakub Kicinski struct tc_action *a = exts->actions[i]; 141d897a638SJakub Kicinski 142d897a638SJakub Kicinski tcf_action_stats_update(a, bytes, packets, lastuse); 143d897a638SJakub Kicinski } 144d897a638SJakub Kicinski 145d897a638SJakub Kicinski preempt_enable(); 146d897a638SJakub Kicinski #endif 147d897a638SJakub Kicinski } 148d897a638SJakub Kicinski 1491da177e4SLinus Torvalds /** 1503bcc0cecSJiri Pirko * tcf_exts_has_actions - check if at least one action is present 1513bcc0cecSJiri Pirko * @exts: tc filter extensions handle 1523bcc0cecSJiri Pirko * 1533bcc0cecSJiri Pirko * Returns true if at least one action is present. 1543bcc0cecSJiri Pirko */ 1553bcc0cecSJiri Pirko static inline bool tcf_exts_has_actions(struct tcf_exts *exts) 1563bcc0cecSJiri Pirko { 1572734437eSWANG Cong #ifdef CONFIG_NET_CLS_ACT 1583bcc0cecSJiri Pirko return exts->nr_actions; 1593bcc0cecSJiri Pirko #else 1603bcc0cecSJiri Pirko return false; 1613bcc0cecSJiri Pirko #endif 1623bcc0cecSJiri Pirko } 1632734437eSWANG Cong 1643bcc0cecSJiri Pirko /** 1653bcc0cecSJiri Pirko * tcf_exts_has_one_action - check if exactly one action is present 1663bcc0cecSJiri Pirko * @exts: tc filter extensions handle 1673bcc0cecSJiri Pirko * 1683bcc0cecSJiri Pirko * Returns true if exactly one action is present. 1693bcc0cecSJiri Pirko */ 1703bcc0cecSJiri Pirko static inline bool tcf_exts_has_one_action(struct tcf_exts *exts) 1713bcc0cecSJiri Pirko { 1723bcc0cecSJiri Pirko #ifdef CONFIG_NET_CLS_ACT 1733bcc0cecSJiri Pirko return exts->nr_actions == 1; 1743bcc0cecSJiri Pirko #else 1753bcc0cecSJiri Pirko return false; 1763bcc0cecSJiri Pirko #endif 1773bcc0cecSJiri Pirko } 1782734437eSWANG Cong 179af69afc5SJiri Pirko /** 180af69afc5SJiri Pirko * tcf_exts_exec - execute tc filter extensions 181af69afc5SJiri Pirko * @skb: socket buffer 182af69afc5SJiri Pirko * @exts: tc filter extensions handle 183af69afc5SJiri Pirko * @res: desired result 184af69afc5SJiri Pirko * 185af089e70SJiri Pirko * Executes all configured extensions. Returns TC_ACT_OK on a normal execution, 186af69afc5SJiri Pirko * a negative number if the filter must be considered unmatched or 187af69afc5SJiri Pirko * a positive action code (TC_ACT_*) which must be returned to the 188af69afc5SJiri Pirko * underlying layer. 189af69afc5SJiri Pirko */ 190af69afc5SJiri Pirko static inline int 191af69afc5SJiri Pirko tcf_exts_exec(struct sk_buff *skb, struct tcf_exts *exts, 192af69afc5SJiri Pirko struct tcf_result *res) 193af69afc5SJiri Pirko { 194af69afc5SJiri Pirko #ifdef CONFIG_NET_CLS_ACT 195ec1a9ccaSJiri Pirko return tcf_action_exec(skb, exts->actions, exts->nr_actions, res); 196af69afc5SJiri Pirko #endif 197af089e70SJiri Pirko return TC_ACT_OK; 198af69afc5SJiri Pirko } 199af69afc5SJiri Pirko 2005c15257fSJoe Perches int tcf_exts_validate(struct net *net, struct tcf_proto *tp, 201c1b52739SBenjamin LaHaise struct nlattr **tb, struct nlattr *rate_tlv, 2022f7ef2f8SCong Wang struct tcf_exts *exts, bool ovr); 20318d0264fSWANG Cong void tcf_exts_destroy(struct tcf_exts *exts); 2049b0d4446SJiri Pirko void tcf_exts_change(struct tcf_exts *dst, struct tcf_exts *src); 2055da57f42SWANG Cong int tcf_exts_dump(struct sk_buff *skb, struct tcf_exts *exts); 2065da57f42SWANG Cong int tcf_exts_dump_stats(struct sk_buff *skb, struct tcf_exts *exts); 2077091d8c7SHadar Hen Zion int tcf_exts_get_dev(struct net_device *dev, struct tcf_exts *exts, 2087091d8c7SHadar Hen Zion struct net_device **hw_dev); 2091da177e4SLinus Torvalds 2101da177e4SLinus Torvalds /** 2111da177e4SLinus Torvalds * struct tcf_pkt_info - packet information 2121da177e4SLinus Torvalds */ 213fd2c3ef7SEric Dumazet struct tcf_pkt_info { 2141da177e4SLinus Torvalds unsigned char * ptr; 2151da177e4SLinus Torvalds int nexthdr; 2161da177e4SLinus Torvalds }; 2171da177e4SLinus Torvalds 2181da177e4SLinus Torvalds #ifdef CONFIG_NET_EMATCH 2191da177e4SLinus Torvalds 2201da177e4SLinus Torvalds struct tcf_ematch_ops; 2211da177e4SLinus Torvalds 2221da177e4SLinus Torvalds /** 2231da177e4SLinus Torvalds * struct tcf_ematch - extended match (ematch) 2241da177e4SLinus Torvalds * 2251da177e4SLinus Torvalds * @matchid: identifier to allow userspace to reidentify a match 2261da177e4SLinus Torvalds * @flags: flags specifying attributes and the relation to other matches 2271da177e4SLinus Torvalds * @ops: the operations lookup table of the corresponding ematch module 2281da177e4SLinus Torvalds * @datalen: length of the ematch specific configuration data 2291da177e4SLinus Torvalds * @data: ematch specific data 2301da177e4SLinus Torvalds */ 231fd2c3ef7SEric Dumazet struct tcf_ematch { 2321da177e4SLinus Torvalds struct tcf_ematch_ops * ops; 2331da177e4SLinus Torvalds unsigned long data; 2341da177e4SLinus Torvalds unsigned int datalen; 2351da177e4SLinus Torvalds u16 matchid; 2361da177e4SLinus Torvalds u16 flags; 23782a470f1SJohn Fastabend struct net *net; 2381da177e4SLinus Torvalds }; 2391da177e4SLinus Torvalds 2401da177e4SLinus Torvalds static inline int tcf_em_is_container(struct tcf_ematch *em) 2411da177e4SLinus Torvalds { 2421da177e4SLinus Torvalds return !em->ops; 2431da177e4SLinus Torvalds } 2441da177e4SLinus Torvalds 2451da177e4SLinus Torvalds static inline int tcf_em_is_simple(struct tcf_ematch *em) 2461da177e4SLinus Torvalds { 2471da177e4SLinus Torvalds return em->flags & TCF_EM_SIMPLE; 2481da177e4SLinus Torvalds } 2491da177e4SLinus Torvalds 2501da177e4SLinus Torvalds static inline int tcf_em_is_inverted(struct tcf_ematch *em) 2511da177e4SLinus Torvalds { 2521da177e4SLinus Torvalds return em->flags & TCF_EM_INVERT; 2531da177e4SLinus Torvalds } 2541da177e4SLinus Torvalds 2551da177e4SLinus Torvalds static inline int tcf_em_last_match(struct tcf_ematch *em) 2561da177e4SLinus Torvalds { 2571da177e4SLinus Torvalds return (em->flags & TCF_EM_REL_MASK) == TCF_EM_REL_END; 2581da177e4SLinus Torvalds } 2591da177e4SLinus Torvalds 2601da177e4SLinus Torvalds static inline int tcf_em_early_end(struct tcf_ematch *em, int result) 2611da177e4SLinus Torvalds { 2621da177e4SLinus Torvalds if (tcf_em_last_match(em)) 2631da177e4SLinus Torvalds return 1; 2641da177e4SLinus Torvalds 2651da177e4SLinus Torvalds if (result == 0 && em->flags & TCF_EM_REL_AND) 2661da177e4SLinus Torvalds return 1; 2671da177e4SLinus Torvalds 2681da177e4SLinus Torvalds if (result != 0 && em->flags & TCF_EM_REL_OR) 2691da177e4SLinus Torvalds return 1; 2701da177e4SLinus Torvalds 2711da177e4SLinus Torvalds return 0; 2721da177e4SLinus Torvalds } 2731da177e4SLinus Torvalds 2741da177e4SLinus Torvalds /** 2751da177e4SLinus Torvalds * struct tcf_ematch_tree - ematch tree handle 2761da177e4SLinus Torvalds * 2771da177e4SLinus Torvalds * @hdr: ematch tree header supplied by userspace 2781da177e4SLinus Torvalds * @matches: array of ematches 2791da177e4SLinus Torvalds */ 280fd2c3ef7SEric Dumazet struct tcf_ematch_tree { 2811da177e4SLinus Torvalds struct tcf_ematch_tree_hdr hdr; 2821da177e4SLinus Torvalds struct tcf_ematch * matches; 2831da177e4SLinus Torvalds 2841da177e4SLinus Torvalds }; 2851da177e4SLinus Torvalds 2861da177e4SLinus Torvalds /** 2871da177e4SLinus Torvalds * struct tcf_ematch_ops - ematch module operations 2881da177e4SLinus Torvalds * 2891da177e4SLinus Torvalds * @kind: identifier (kind) of this ematch module 2901da177e4SLinus Torvalds * @datalen: length of expected configuration data (optional) 2911da177e4SLinus Torvalds * @change: called during validation (optional) 2921da177e4SLinus Torvalds * @match: called during ematch tree evaluation, must return 1/0 2931da177e4SLinus Torvalds * @destroy: called during destroyage (optional) 2941da177e4SLinus Torvalds * @dump: called during dumping process (optional) 2951da177e4SLinus Torvalds * @owner: owner, must be set to THIS_MODULE 2961da177e4SLinus Torvalds * @link: link to previous/next ematch module (internal use) 2971da177e4SLinus Torvalds */ 298fd2c3ef7SEric Dumazet struct tcf_ematch_ops { 2991da177e4SLinus Torvalds int kind; 3001da177e4SLinus Torvalds int datalen; 30182a470f1SJohn Fastabend int (*change)(struct net *net, void *, 3021da177e4SLinus Torvalds int, struct tcf_ematch *); 3031da177e4SLinus Torvalds int (*match)(struct sk_buff *, struct tcf_ematch *, 3041da177e4SLinus Torvalds struct tcf_pkt_info *); 30582a470f1SJohn Fastabend void (*destroy)(struct tcf_ematch *); 3061da177e4SLinus Torvalds int (*dump)(struct sk_buff *, struct tcf_ematch *); 3071da177e4SLinus Torvalds struct module *owner; 3081da177e4SLinus Torvalds struct list_head link; 3091da177e4SLinus Torvalds }; 3101da177e4SLinus Torvalds 3115c15257fSJoe Perches int tcf_em_register(struct tcf_ematch_ops *); 3125c15257fSJoe Perches void tcf_em_unregister(struct tcf_ematch_ops *); 3135c15257fSJoe Perches int tcf_em_tree_validate(struct tcf_proto *, struct nlattr *, 3141da177e4SLinus Torvalds struct tcf_ematch_tree *); 31582a470f1SJohn Fastabend void tcf_em_tree_destroy(struct tcf_ematch_tree *); 3165c15257fSJoe Perches int tcf_em_tree_dump(struct sk_buff *, struct tcf_ematch_tree *, int); 3175c15257fSJoe Perches int __tcf_em_tree_match(struct sk_buff *, struct tcf_ematch_tree *, 3181da177e4SLinus Torvalds struct tcf_pkt_info *); 3191da177e4SLinus Torvalds 3201da177e4SLinus Torvalds /** 3211da177e4SLinus Torvalds * tcf_em_tree_match - evaulate an ematch tree 3221da177e4SLinus Torvalds * 3231da177e4SLinus Torvalds * @skb: socket buffer of the packet in question 3241da177e4SLinus Torvalds * @tree: ematch tree to be used for evaluation 3251da177e4SLinus Torvalds * @info: packet information examined by classifier 3261da177e4SLinus Torvalds * 3271da177e4SLinus Torvalds * This function matches @skb against the ematch tree in @tree by going 3281da177e4SLinus Torvalds * through all ematches respecting their logic relations returning 3291da177e4SLinus Torvalds * as soon as the result is obvious. 3301da177e4SLinus Torvalds * 3311da177e4SLinus Torvalds * Returns 1 if the ematch tree as-one matches, no ematches are configured 3321da177e4SLinus Torvalds * or ematch is not enabled in the kernel, otherwise 0 is returned. 3331da177e4SLinus Torvalds */ 3341da177e4SLinus Torvalds static inline int tcf_em_tree_match(struct sk_buff *skb, 3351da177e4SLinus Torvalds struct tcf_ematch_tree *tree, 3361da177e4SLinus Torvalds struct tcf_pkt_info *info) 3371da177e4SLinus Torvalds { 3381da177e4SLinus Torvalds if (tree->hdr.nmatches) 3391da177e4SLinus Torvalds return __tcf_em_tree_match(skb, tree, info); 3401da177e4SLinus Torvalds else 3411da177e4SLinus Torvalds return 1; 3421da177e4SLinus Torvalds } 3431da177e4SLinus Torvalds 344db3d99c0SPatrick McHardy #define MODULE_ALIAS_TCF_EMATCH(kind) MODULE_ALIAS("ematch-kind-" __stringify(kind)) 345db3d99c0SPatrick McHardy 3461da177e4SLinus Torvalds #else /* CONFIG_NET_EMATCH */ 3471da177e4SLinus Torvalds 348fd2c3ef7SEric Dumazet struct tcf_ematch_tree { 3491da177e4SLinus Torvalds }; 3501da177e4SLinus Torvalds 3511da177e4SLinus Torvalds #define tcf_em_tree_validate(tp, tb, t) ((void)(t), 0) 35282a470f1SJohn Fastabend #define tcf_em_tree_destroy(t) do { (void)(t); } while(0) 3531da177e4SLinus Torvalds #define tcf_em_tree_dump(skb, t, tlv) (0) 3541da177e4SLinus Torvalds #define tcf_em_tree_match(skb, t, info) ((void)(info), 1) 3551da177e4SLinus Torvalds 3561da177e4SLinus Torvalds #endif /* CONFIG_NET_EMATCH */ 3571da177e4SLinus Torvalds 3581da177e4SLinus Torvalds static inline unsigned char * tcf_get_base_ptr(struct sk_buff *skb, int layer) 3591da177e4SLinus Torvalds { 3601da177e4SLinus Torvalds switch (layer) { 3611da177e4SLinus Torvalds case TCF_LAYER_LINK: 3621da177e4SLinus Torvalds return skb->data; 3631da177e4SLinus Torvalds case TCF_LAYER_NETWORK: 364d56f90a7SArnaldo Carvalho de Melo return skb_network_header(skb); 3651da177e4SLinus Torvalds case TCF_LAYER_TRANSPORT: 3669c70220bSArnaldo Carvalho de Melo return skb_transport_header(skb); 3671da177e4SLinus Torvalds } 3681da177e4SLinus Torvalds 3691da177e4SLinus Torvalds return NULL; 3701da177e4SLinus Torvalds } 3711da177e4SLinus Torvalds 372eddc9ec5SArnaldo Carvalho de Melo static inline int tcf_valid_offset(const struct sk_buff *skb, 373eddc9ec5SArnaldo Carvalho de Melo const unsigned char *ptr, const int len) 3741da177e4SLinus Torvalds { 375da521b2cSDavid S. Miller return likely((ptr + len) <= skb_tail_pointer(skb) && 376da521b2cSDavid S. Miller ptr >= skb->head && 377da521b2cSDavid S. Miller (ptr <= (ptr + len))); 3781da177e4SLinus Torvalds } 3791da177e4SLinus Torvalds 3801da177e4SLinus Torvalds #ifdef CONFIG_NET_CLS_IND 3810eeb8ffcSDenis V. Lunev #include <net/net_namespace.h> 3820eeb8ffcSDenis V. Lunev 3831da177e4SLinus Torvalds static inline int 3842519a602SWANG Cong tcf_change_indev(struct net *net, struct nlattr *indev_tlv) 3851da177e4SLinus Torvalds { 3862519a602SWANG Cong char indev[IFNAMSIZ]; 387c01003c2SPatrick McHardy struct net_device *dev; 388c01003c2SPatrick McHardy 3892519a602SWANG Cong if (nla_strlcpy(indev, indev_tlv, IFNAMSIZ) >= IFNAMSIZ) 3902519a602SWANG Cong return -EINVAL; 3912519a602SWANG Cong dev = __dev_get_by_name(net, indev); 3922519a602SWANG Cong if (!dev) 3932519a602SWANG Cong return -ENODEV; 3942519a602SWANG Cong return dev->ifindex; 3951da177e4SLinus Torvalds } 3961da177e4SLinus Torvalds 3972519a602SWANG Cong static inline bool 3982519a602SWANG Cong tcf_match_indev(struct sk_buff *skb, int ifindex) 3992519a602SWANG Cong { 4002519a602SWANG Cong if (!ifindex) 4012519a602SWANG Cong return true; 4022519a602SWANG Cong if (!skb->skb_iif) 4032519a602SWANG Cong return false; 4042519a602SWANG Cong return ifindex == skb->skb_iif; 4051da177e4SLinus Torvalds } 4061da177e4SLinus Torvalds #endif /* CONFIG_NET_CLS_IND */ 4071da177e4SLinus Torvalds 4085fd9fc4eSJiri Pirko struct tc_cls_common_offload { 4095fd9fc4eSJiri Pirko u32 handle; 4105fd9fc4eSJiri Pirko u32 chain_index; 4115fd9fc4eSJiri Pirko __be16 protocol; 412d7c1c8d2SJiri Pirko u32 prio; 4135fd9fc4eSJiri Pirko }; 4145fd9fc4eSJiri Pirko 4155fd9fc4eSJiri Pirko static inline void 4165fd9fc4eSJiri Pirko tc_cls_common_offload_init(struct tc_cls_common_offload *cls_common, 4175fd9fc4eSJiri Pirko const struct tcf_proto *tp) 4185fd9fc4eSJiri Pirko { 4195fd9fc4eSJiri Pirko cls_common->handle = tp->q->handle; 4205fd9fc4eSJiri Pirko cls_common->chain_index = tp->chain->index; 4215fd9fc4eSJiri Pirko cls_common->protocol = tp->protocol; 422d7c1c8d2SJiri Pirko cls_common->prio = tp->prio; 4235fd9fc4eSJiri Pirko } 4245fd9fc4eSJiri Pirko 425a1b7c5fdSJohn Fastabend struct tc_cls_u32_knode { 426a1b7c5fdSJohn Fastabend struct tcf_exts *exts; 427e014860eSJohn Fastabend struct tc_u32_sel *sel; 428a1b7c5fdSJohn Fastabend u32 handle; 429a1b7c5fdSJohn Fastabend u32 val; 430a1b7c5fdSJohn Fastabend u32 mask; 431a1b7c5fdSJohn Fastabend u32 link_handle; 432e014860eSJohn Fastabend u8 fshift; 433a1b7c5fdSJohn Fastabend }; 434a1b7c5fdSJohn Fastabend 435a1b7c5fdSJohn Fastabend struct tc_cls_u32_hnode { 436a1b7c5fdSJohn Fastabend u32 handle; 437a1b7c5fdSJohn Fastabend u32 prio; 438a1b7c5fdSJohn Fastabend unsigned int divisor; 439a1b7c5fdSJohn Fastabend }; 440a1b7c5fdSJohn Fastabend 441a1b7c5fdSJohn Fastabend enum tc_clsu32_command { 442a1b7c5fdSJohn Fastabend TC_CLSU32_NEW_KNODE, 443a1b7c5fdSJohn Fastabend TC_CLSU32_REPLACE_KNODE, 444a1b7c5fdSJohn Fastabend TC_CLSU32_DELETE_KNODE, 445a1b7c5fdSJohn Fastabend TC_CLSU32_NEW_HNODE, 446a1b7c5fdSJohn Fastabend TC_CLSU32_REPLACE_HNODE, 447a1b7c5fdSJohn Fastabend TC_CLSU32_DELETE_HNODE, 448a1b7c5fdSJohn Fastabend }; 449a1b7c5fdSJohn Fastabend 450a1b7c5fdSJohn Fastabend struct tc_cls_u32_offload { 4515fd9fc4eSJiri Pirko struct tc_cls_common_offload common; 452a1b7c5fdSJohn Fastabend /* knode values */ 453a1b7c5fdSJohn Fastabend enum tc_clsu32_command command; 454a1b7c5fdSJohn Fastabend union { 455a1b7c5fdSJohn Fastabend struct tc_cls_u32_knode knode; 456a1b7c5fdSJohn Fastabend struct tc_cls_u32_hnode hnode; 457a1b7c5fdSJohn Fastabend }; 458a1b7c5fdSJohn Fastabend }; 459a1b7c5fdSJohn Fastabend 46055330f05SHadar Hen Zion static inline bool tc_can_offload(const struct net_device *dev, 46155330f05SHadar Hen Zion const struct tcf_proto *tp) 4626843e7a2SJohn Fastabend { 46392c075dbSDaniel Borkmann const struct Qdisc *sch = tp->q; 46492c075dbSDaniel Borkmann const struct Qdisc_class_ops *cops = sch->ops->cl_ops; 46592c075dbSDaniel Borkmann 4662b6ab0d3SJohn Fastabend if (!(dev->features & NETIF_F_HW_TC)) 4672b6ab0d3SJohn Fastabend return false; 4689e8ce79cSJohn Fastabend if (!dev->netdev_ops->ndo_setup_tc) 4699e8ce79cSJohn Fastabend return false; 47092c075dbSDaniel Borkmann if (cops && cops->tcf_cl_offload) 47192c075dbSDaniel Borkmann return cops->tcf_cl_offload(tp->classid); 4729e8ce79cSJohn Fastabend 4739e8ce79cSJohn Fastabend return true; 4746843e7a2SJohn Fastabend } 4756843e7a2SJohn Fastabend 47655330f05SHadar Hen Zion static inline bool tc_skip_hw(u32 flags) 47755330f05SHadar Hen Zion { 47855330f05SHadar Hen Zion return (flags & TCA_CLS_FLAGS_SKIP_HW) ? true : false; 47955330f05SHadar Hen Zion } 48055330f05SHadar Hen Zion 48155330f05SHadar Hen Zion static inline bool tc_should_offload(const struct net_device *dev, 48255330f05SHadar Hen Zion const struct tcf_proto *tp, u32 flags) 48355330f05SHadar Hen Zion { 48455330f05SHadar Hen Zion if (tc_skip_hw(flags)) 48555330f05SHadar Hen Zion return false; 48655330f05SHadar Hen Zion return tc_can_offload(dev, tp); 48755330f05SHadar Hen Zion } 48855330f05SHadar Hen Zion 489d34e3e18SSamudrala, Sridhar static inline bool tc_skip_sw(u32 flags) 490d34e3e18SSamudrala, Sridhar { 491d34e3e18SSamudrala, Sridhar return (flags & TCA_CLS_FLAGS_SKIP_SW) ? true : false; 492d34e3e18SSamudrala, Sridhar } 493d34e3e18SSamudrala, Sridhar 494d34e3e18SSamudrala, Sridhar /* SKIP_HW and SKIP_SW are mutually exclusive flags. */ 495d34e3e18SSamudrala, Sridhar static inline bool tc_flags_valid(u32 flags) 496d34e3e18SSamudrala, Sridhar { 497d34e3e18SSamudrala, Sridhar if (flags & ~(TCA_CLS_FLAGS_SKIP_HW | TCA_CLS_FLAGS_SKIP_SW)) 498d34e3e18SSamudrala, Sridhar return false; 499d34e3e18SSamudrala, Sridhar 500d34e3e18SSamudrala, Sridhar if (!(flags ^ (TCA_CLS_FLAGS_SKIP_HW | TCA_CLS_FLAGS_SKIP_SW))) 501d34e3e18SSamudrala, Sridhar return false; 502d34e3e18SSamudrala, Sridhar 503d34e3e18SSamudrala, Sridhar return true; 504d34e3e18SSamudrala, Sridhar } 505d34e3e18SSamudrala, Sridhar 506e696028aSOr Gerlitz static inline bool tc_in_hw(u32 flags) 507e696028aSOr Gerlitz { 508e696028aSOr Gerlitz return (flags & TCA_CLS_FLAGS_IN_HW) ? true : false; 509e696028aSOr Gerlitz } 510e696028aSOr Gerlitz 5115b33f488SAmir Vadai enum tc_fl_command { 5125b33f488SAmir Vadai TC_CLSFLOWER_REPLACE, 5135b33f488SAmir Vadai TC_CLSFLOWER_DESTROY, 51410cbc684SAmir Vadai TC_CLSFLOWER_STATS, 5155b33f488SAmir Vadai }; 5165b33f488SAmir Vadai 5175b33f488SAmir Vadai struct tc_cls_flower_offload { 5185fd9fc4eSJiri Pirko struct tc_cls_common_offload common; 5195b33f488SAmir Vadai enum tc_fl_command command; 5208208d21bSAmir Vadai unsigned long cookie; 5215b33f488SAmir Vadai struct flow_dissector *dissector; 5225b33f488SAmir Vadai struct fl_flow_key *mask; 5235b33f488SAmir Vadai struct fl_flow_key *key; 5245b33f488SAmir Vadai struct tcf_exts *exts; 5253e0e8266SJiri Pirko bool egress_dev; 5265b33f488SAmir Vadai }; 5275b33f488SAmir Vadai 528b87f7936SYotam Gigi enum tc_matchall_command { 529b87f7936SYotam Gigi TC_CLSMATCHALL_REPLACE, 530b87f7936SYotam Gigi TC_CLSMATCHALL_DESTROY, 531b87f7936SYotam Gigi }; 532b87f7936SYotam Gigi 533b87f7936SYotam Gigi struct tc_cls_matchall_offload { 5345fd9fc4eSJiri Pirko struct tc_cls_common_offload common; 535b87f7936SYotam Gigi enum tc_matchall_command command; 536b87f7936SYotam Gigi struct tcf_exts *exts; 537b87f7936SYotam Gigi unsigned long cookie; 538b87f7936SYotam Gigi }; 539b87f7936SYotam Gigi 540332ae8e2SJakub Kicinski enum tc_clsbpf_command { 541332ae8e2SJakub Kicinski TC_CLSBPF_ADD, 542332ae8e2SJakub Kicinski TC_CLSBPF_REPLACE, 543332ae8e2SJakub Kicinski TC_CLSBPF_DESTROY, 54468d64063SJakub Kicinski TC_CLSBPF_STATS, 545332ae8e2SJakub Kicinski }; 546332ae8e2SJakub Kicinski 547332ae8e2SJakub Kicinski struct tc_cls_bpf_offload { 5485fd9fc4eSJiri Pirko struct tc_cls_common_offload common; 549332ae8e2SJakub Kicinski enum tc_clsbpf_command command; 550332ae8e2SJakub Kicinski struct tcf_exts *exts; 551332ae8e2SJakub Kicinski struct bpf_prog *prog; 552332ae8e2SJakub Kicinski const char *name; 553332ae8e2SJakub Kicinski bool exts_integrated; 5540d01d45fSJakub Kicinski u32 gen_flags; 555332ae8e2SJakub Kicinski }; 556332ae8e2SJakub Kicinski 5571045ba77SJamal Hadi Salim 5581045ba77SJamal Hadi Salim /* This structure holds cookie structure that is passed from user 5591045ba77SJamal Hadi Salim * to the kernel for actions and classifiers 5601045ba77SJamal Hadi Salim */ 5611045ba77SJamal Hadi Salim struct tc_cookie { 5621045ba77SJamal Hadi Salim u8 *data; 5631045ba77SJamal Hadi Salim u32 len; 5641045ba77SJamal Hadi Salim }; 5651da177e4SLinus Torvalds #endif 566