1b2441318SGreg Kroah-Hartman /* SPDX-License-Identifier: GPL-2.0 */ 21da177e4SLinus Torvalds #ifndef __NET_PKT_CLS_H 31da177e4SLinus Torvalds #define __NET_PKT_CLS_H 41da177e4SLinus Torvalds 51da177e4SLinus Torvalds #include <linux/pkt_cls.h> 67aa0045dSCong Wang #include <linux/workqueue.h> 71da177e4SLinus Torvalds #include <net/sch_generic.h> 81da177e4SLinus Torvalds #include <net/act_api.h> 91da177e4SLinus Torvalds 101da177e4SLinus Torvalds /* Basic packet classifier frontend definitions. */ 111da177e4SLinus Torvalds 12fd2c3ef7SEric Dumazet struct tcf_walker { 131da177e4SLinus Torvalds int stop; 141da177e4SLinus Torvalds int skip; 151da177e4SLinus Torvalds int count; 168113c095SWANG Cong int (*fn)(struct tcf_proto *, void *node, struct tcf_walker *); 171da177e4SLinus Torvalds }; 181da177e4SLinus Torvalds 195c15257fSJoe Perches int register_tcf_proto_ops(struct tcf_proto_ops *ops); 205c15257fSJoe Perches int unregister_tcf_proto_ops(struct tcf_proto_ops *ops); 211da177e4SLinus Torvalds 228c4083b3SJiri Pirko enum tcf_block_binder_type { 238c4083b3SJiri Pirko TCF_BLOCK_BINDER_TYPE_UNSPEC, 246e40cf2dSJiri Pirko TCF_BLOCK_BINDER_TYPE_CLSACT_INGRESS, 256e40cf2dSJiri Pirko TCF_BLOCK_BINDER_TYPE_CLSACT_EGRESS, 268c4083b3SJiri Pirko }; 278c4083b3SJiri Pirko 288c4083b3SJiri Pirko struct tcf_block_ext_info { 298c4083b3SJiri Pirko enum tcf_block_binder_type binder_type; 30c7eb7d72SJiri Pirko tcf_chain_head_change_t *chain_head_change; 31c7eb7d72SJiri Pirko void *chain_head_change_priv; 328c4083b3SJiri Pirko }; 338c4083b3SJiri Pirko 34acb67442SJiri Pirko struct tcf_block_cb; 357aa0045dSCong Wang bool tcf_queue_work(struct work_struct *work); 36acb67442SJiri Pirko 378ae70032SJiri Pirko #ifdef CONFIG_NET_CLS 38367a8ce8SWANG Cong struct tcf_chain *tcf_chain_get(struct tcf_block *block, u32 chain_index, 39367a8ce8SWANG Cong bool create); 405bc17018SJiri Pirko void tcf_chain_put(struct tcf_chain *chain); 416529eabaSJiri Pirko int tcf_block_get(struct tcf_block **p_block, 4269d78ef2SJiri Pirko struct tcf_proto __rcu **p_filter_chain, struct Qdisc *q); 43c7eb7d72SJiri Pirko int tcf_block_get_ext(struct tcf_block **p_block, struct Qdisc *q, 448c4083b3SJiri Pirko struct tcf_block_ext_info *ei); 456529eabaSJiri Pirko void tcf_block_put(struct tcf_block *block); 46c7eb7d72SJiri Pirko void tcf_block_put_ext(struct tcf_block *block, struct Qdisc *q, 478c4083b3SJiri Pirko struct tcf_block_ext_info *ei); 4844186460SJiri Pirko 4944186460SJiri Pirko static inline struct Qdisc *tcf_block_q(struct tcf_block *block) 5044186460SJiri Pirko { 5144186460SJiri Pirko return block->q; 5244186460SJiri Pirko } 5344186460SJiri Pirko 5444186460SJiri Pirko static inline struct net_device *tcf_block_dev(struct tcf_block *block) 5544186460SJiri Pirko { 5644186460SJiri Pirko return tcf_block_q(block)->dev_queue->dev; 5744186460SJiri Pirko } 5844186460SJiri Pirko 59acb67442SJiri Pirko void *tcf_block_cb_priv(struct tcf_block_cb *block_cb); 60acb67442SJiri Pirko struct tcf_block_cb *tcf_block_cb_lookup(struct tcf_block *block, 61acb67442SJiri Pirko tc_setup_cb_t *cb, void *cb_ident); 62acb67442SJiri Pirko void tcf_block_cb_incref(struct tcf_block_cb *block_cb); 63acb67442SJiri Pirko unsigned int tcf_block_cb_decref(struct tcf_block_cb *block_cb); 64acb67442SJiri Pirko struct tcf_block_cb *__tcf_block_cb_register(struct tcf_block *block, 65acb67442SJiri Pirko tc_setup_cb_t *cb, void *cb_ident, 66acb67442SJiri Pirko void *cb_priv); 67acb67442SJiri Pirko int tcf_block_cb_register(struct tcf_block *block, 68acb67442SJiri Pirko tc_setup_cb_t *cb, void *cb_ident, 69acb67442SJiri Pirko void *cb_priv); 70acb67442SJiri Pirko void __tcf_block_cb_unregister(struct tcf_block_cb *block_cb); 71acb67442SJiri Pirko void tcf_block_cb_unregister(struct tcf_block *block, 72acb67442SJiri Pirko tc_setup_cb_t *cb, void *cb_ident); 73acb67442SJiri Pirko 7487d83093SJiri Pirko int tcf_classify(struct sk_buff *skb, const struct tcf_proto *tp, 7587d83093SJiri Pirko struct tcf_result *res, bool compat_mode); 7687d83093SJiri Pirko 778ae70032SJiri Pirko #else 786529eabaSJiri Pirko static inline 796529eabaSJiri Pirko int tcf_block_get(struct tcf_block **p_block, 8069d78ef2SJiri Pirko struct tcf_proto __rcu **p_filter_chain, struct Qdisc *q) 816529eabaSJiri Pirko { 826529eabaSJiri Pirko return 0; 836529eabaSJiri Pirko } 846529eabaSJiri Pirko 858c4083b3SJiri Pirko static inline 86c7eb7d72SJiri Pirko int tcf_block_get_ext(struct tcf_block **p_block, struct Qdisc *q, 878c4083b3SJiri Pirko struct tcf_block_ext_info *ei) 888c4083b3SJiri Pirko { 898c4083b3SJiri Pirko return 0; 908c4083b3SJiri Pirko } 918c4083b3SJiri Pirko 926529eabaSJiri Pirko static inline void tcf_block_put(struct tcf_block *block) 938ae70032SJiri Pirko { 948ae70032SJiri Pirko } 9587d83093SJiri Pirko 968c4083b3SJiri Pirko static inline 97c7eb7d72SJiri Pirko void tcf_block_put_ext(struct tcf_block *block, struct Qdisc *q, 988c4083b3SJiri Pirko struct tcf_block_ext_info *ei) 998c4083b3SJiri Pirko { 1008c4083b3SJiri Pirko } 1018c4083b3SJiri Pirko 10244186460SJiri Pirko static inline struct Qdisc *tcf_block_q(struct tcf_block *block) 10344186460SJiri Pirko { 10444186460SJiri Pirko return NULL; 10544186460SJiri Pirko } 10644186460SJiri Pirko 10744186460SJiri Pirko static inline struct net_device *tcf_block_dev(struct tcf_block *block) 10844186460SJiri Pirko { 10944186460SJiri Pirko return NULL; 11044186460SJiri Pirko } 11144186460SJiri Pirko 112acb67442SJiri Pirko static inline 113acb67442SJiri Pirko int tc_setup_cb_block_register(struct tcf_block *block, tc_setup_cb_t *cb, 114acb67442SJiri Pirko void *cb_priv) 115acb67442SJiri Pirko { 116acb67442SJiri Pirko return 0; 117acb67442SJiri Pirko } 118acb67442SJiri Pirko 119acb67442SJiri Pirko static inline 120acb67442SJiri Pirko void tc_setup_cb_block_unregister(struct tcf_block *block, tc_setup_cb_t *cb, 121acb67442SJiri Pirko void *cb_priv) 122acb67442SJiri Pirko { 123acb67442SJiri Pirko } 124acb67442SJiri Pirko 125acb67442SJiri Pirko static inline 126acb67442SJiri Pirko void *tcf_block_cb_priv(struct tcf_block_cb *block_cb) 127acb67442SJiri Pirko { 128acb67442SJiri Pirko return NULL; 129acb67442SJiri Pirko } 130acb67442SJiri Pirko 131acb67442SJiri Pirko static inline 132acb67442SJiri Pirko struct tcf_block_cb *tcf_block_cb_lookup(struct tcf_block *block, 133acb67442SJiri Pirko tc_setup_cb_t *cb, void *cb_ident) 134acb67442SJiri Pirko { 135acb67442SJiri Pirko return NULL; 136acb67442SJiri Pirko } 137acb67442SJiri Pirko 138acb67442SJiri Pirko static inline 139acb67442SJiri Pirko void tcf_block_cb_incref(struct tcf_block_cb *block_cb) 140acb67442SJiri Pirko { 141acb67442SJiri Pirko } 142acb67442SJiri Pirko 143acb67442SJiri Pirko static inline 144acb67442SJiri Pirko unsigned int tcf_block_cb_decref(struct tcf_block_cb *block_cb) 145acb67442SJiri Pirko { 146acb67442SJiri Pirko return 0; 147acb67442SJiri Pirko } 148acb67442SJiri Pirko 149acb67442SJiri Pirko static inline 150acb67442SJiri Pirko struct tcf_block_cb *__tcf_block_cb_register(struct tcf_block *block, 151acb67442SJiri Pirko tc_setup_cb_t *cb, void *cb_ident, 152acb67442SJiri Pirko void *cb_priv) 153acb67442SJiri Pirko { 154acb67442SJiri Pirko return NULL; 155acb67442SJiri Pirko } 156acb67442SJiri Pirko 157acb67442SJiri Pirko static inline 158acb67442SJiri Pirko int tcf_block_cb_register(struct tcf_block *block, 159acb67442SJiri Pirko tc_setup_cb_t *cb, void *cb_ident, 160acb67442SJiri Pirko void *cb_priv) 161acb67442SJiri Pirko { 162acb67442SJiri Pirko return 0; 163acb67442SJiri Pirko } 164acb67442SJiri Pirko 165acb67442SJiri Pirko static inline 166acb67442SJiri Pirko void __tcf_block_cb_unregister(struct tcf_block_cb *block_cb) 167acb67442SJiri Pirko { 168acb67442SJiri Pirko } 169acb67442SJiri Pirko 170acb67442SJiri Pirko static inline 171acb67442SJiri Pirko void tcf_block_cb_unregister(struct tcf_block *block, 172acb67442SJiri Pirko tc_setup_cb_t *cb, void *cb_ident) 173acb67442SJiri Pirko { 174acb67442SJiri Pirko } 175acb67442SJiri Pirko 17687d83093SJiri Pirko static inline int tcf_classify(struct sk_buff *skb, const struct tcf_proto *tp, 17787d83093SJiri Pirko struct tcf_result *res, bool compat_mode) 17887d83093SJiri Pirko { 17987d83093SJiri Pirko return TC_ACT_UNSPEC; 18087d83093SJiri Pirko } 1818ae70032SJiri Pirko #endif 182cf1facdaSJiri Pirko 1831da177e4SLinus Torvalds static inline unsigned long 1841da177e4SLinus Torvalds __cls_set_class(unsigned long *clp, unsigned long cl) 1851da177e4SLinus Torvalds { 186a0efb80cSWANG Cong return xchg(clp, cl); 1871da177e4SLinus Torvalds } 1881da177e4SLinus Torvalds 1891da177e4SLinus Torvalds static inline unsigned long 19034e3759cSJiri Pirko cls_set_class(struct Qdisc *q, unsigned long *clp, unsigned long cl) 1911da177e4SLinus Torvalds { 1921da177e4SLinus Torvalds unsigned long old_cl; 1931da177e4SLinus Torvalds 19434e3759cSJiri Pirko sch_tree_lock(q); 1951da177e4SLinus Torvalds old_cl = __cls_set_class(clp, cl); 19634e3759cSJiri Pirko sch_tree_unlock(q); 1971da177e4SLinus Torvalds return old_cl; 1981da177e4SLinus Torvalds } 1991da177e4SLinus Torvalds 2001da177e4SLinus Torvalds static inline void 2011da177e4SLinus Torvalds tcf_bind_filter(struct tcf_proto *tp, struct tcf_result *r, unsigned long base) 2021da177e4SLinus Torvalds { 20334e3759cSJiri Pirko struct Qdisc *q = tp->chain->block->q; 2041da177e4SLinus Torvalds unsigned long cl; 2051da177e4SLinus Torvalds 20634e3759cSJiri Pirko /* Check q as it is not set for shared blocks. In that case, 20734e3759cSJiri Pirko * setting class is not supported. 20834e3759cSJiri Pirko */ 20934e3759cSJiri Pirko if (!q) 21034e3759cSJiri Pirko return; 21134e3759cSJiri Pirko cl = q->ops->cl_ops->bind_tcf(q, base, r->classid); 21234e3759cSJiri Pirko cl = cls_set_class(q, &r->class, cl); 2131da177e4SLinus Torvalds if (cl) 21434e3759cSJiri Pirko q->ops->cl_ops->unbind_tcf(q, cl); 2151da177e4SLinus Torvalds } 2161da177e4SLinus Torvalds 2171da177e4SLinus Torvalds static inline void 2181da177e4SLinus Torvalds tcf_unbind_filter(struct tcf_proto *tp, struct tcf_result *r) 2191da177e4SLinus Torvalds { 22034e3759cSJiri Pirko struct Qdisc *q = tp->chain->block->q; 2211da177e4SLinus Torvalds unsigned long cl; 2221da177e4SLinus Torvalds 22334e3759cSJiri Pirko if (!q) 22434e3759cSJiri Pirko return; 2251da177e4SLinus Torvalds if ((cl = __cls_set_class(&r->class, 0)) != 0) 22634e3759cSJiri Pirko q->ops->cl_ops->unbind_tcf(q, cl); 2271da177e4SLinus Torvalds } 2281da177e4SLinus Torvalds 229fd2c3ef7SEric Dumazet struct tcf_exts { 2301da177e4SLinus Torvalds #ifdef CONFIG_NET_CLS_ACT 23133be6271SWANG Cong __u32 type; /* for backward compat(TCA_OLD_COMPAT) */ 23222dc13c8SWANG Cong int nr_actions; 23322dc13c8SWANG Cong struct tc_action **actions; 234e4b95c41SCong Wang struct net *net; 2351da177e4SLinus Torvalds #endif 2361da177e4SLinus Torvalds /* Map to export classifier specific extension TLV types to the 2371da177e4SLinus Torvalds * generic extensions API. Unsupported extensions must be set to 0. 2381da177e4SLinus Torvalds */ 2391da177e4SLinus Torvalds int action; 2401da177e4SLinus Torvalds int police; 2411da177e4SLinus Torvalds }; 2421da177e4SLinus Torvalds 243b9a24bb7SWANG Cong static inline int tcf_exts_init(struct tcf_exts *exts, int action, int police) 24433be6271SWANG Cong { 24533be6271SWANG Cong #ifdef CONFIG_NET_CLS_ACT 2465da57f42SWANG Cong exts->type = 0; 24722dc13c8SWANG Cong exts->nr_actions = 0; 248e4b95c41SCong Wang exts->net = NULL; 24922dc13c8SWANG Cong exts->actions = kcalloc(TCA_ACT_MAX_PRIO, sizeof(struct tc_action *), 25022dc13c8SWANG Cong GFP_KERNEL); 251b9a24bb7SWANG Cong if (!exts->actions) 252b9a24bb7SWANG Cong return -ENOMEM; 25333be6271SWANG Cong #endif 2545da57f42SWANG Cong exts->action = action; 2555da57f42SWANG Cong exts->police = police; 256b9a24bb7SWANG Cong return 0; 25733be6271SWANG Cong } 25833be6271SWANG Cong 259e4b95c41SCong Wang /* Return false if the netns is being destroyed in cleanup_net(). Callers 260e4b95c41SCong Wang * need to do cleanup synchronously in this case, otherwise may race with 261e4b95c41SCong Wang * tc_action_net_exit(). Return true for other cases. 262e4b95c41SCong Wang */ 263e4b95c41SCong Wang static inline bool tcf_exts_get_net(struct tcf_exts *exts) 264e4b95c41SCong Wang { 265e4b95c41SCong Wang #ifdef CONFIG_NET_CLS_ACT 266e4b95c41SCong Wang exts->net = maybe_get_net(exts->net); 267e4b95c41SCong Wang return exts->net != NULL; 268e4b95c41SCong Wang #else 269e4b95c41SCong Wang return true; 270e4b95c41SCong Wang #endif 271e4b95c41SCong Wang } 272e4b95c41SCong Wang 273e4b95c41SCong Wang static inline void tcf_exts_put_net(struct tcf_exts *exts) 274e4b95c41SCong Wang { 275e4b95c41SCong Wang #ifdef CONFIG_NET_CLS_ACT 276e4b95c41SCong Wang if (exts->net) 277e4b95c41SCong Wang put_net(exts->net); 278e4b95c41SCong Wang #endif 279e4b95c41SCong Wang } 280e4b95c41SCong Wang 28122dc13c8SWANG Cong static inline void tcf_exts_to_list(const struct tcf_exts *exts, 28222dc13c8SWANG Cong struct list_head *actions) 28322dc13c8SWANG Cong { 28422dc13c8SWANG Cong #ifdef CONFIG_NET_CLS_ACT 28522dc13c8SWANG Cong int i; 28622dc13c8SWANG Cong 28722dc13c8SWANG Cong for (i = 0; i < exts->nr_actions; i++) { 28822dc13c8SWANG Cong struct tc_action *a = exts->actions[i]; 28922dc13c8SWANG Cong 290fa5effe7SHadar Hen Zion list_add_tail(&a->list, actions); 29122dc13c8SWANG Cong } 29222dc13c8SWANG Cong #endif 29322dc13c8SWANG Cong } 29422dc13c8SWANG Cong 295d897a638SJakub Kicinski static inline void 296d897a638SJakub Kicinski tcf_exts_stats_update(const struct tcf_exts *exts, 297d897a638SJakub Kicinski u64 bytes, u64 packets, u64 lastuse) 298d897a638SJakub Kicinski { 299d897a638SJakub Kicinski #ifdef CONFIG_NET_CLS_ACT 300d897a638SJakub Kicinski int i; 301d897a638SJakub Kicinski 302d897a638SJakub Kicinski preempt_disable(); 303d897a638SJakub Kicinski 304d897a638SJakub Kicinski for (i = 0; i < exts->nr_actions; i++) { 305d897a638SJakub Kicinski struct tc_action *a = exts->actions[i]; 306d897a638SJakub Kicinski 307d897a638SJakub Kicinski tcf_action_stats_update(a, bytes, packets, lastuse); 308d897a638SJakub Kicinski } 309d897a638SJakub Kicinski 310d897a638SJakub Kicinski preempt_enable(); 311d897a638SJakub Kicinski #endif 312d897a638SJakub Kicinski } 313d897a638SJakub Kicinski 3141da177e4SLinus Torvalds /** 3153bcc0cecSJiri Pirko * tcf_exts_has_actions - check if at least one action is present 3163bcc0cecSJiri Pirko * @exts: tc filter extensions handle 3173bcc0cecSJiri Pirko * 3183bcc0cecSJiri Pirko * Returns true if at least one action is present. 3193bcc0cecSJiri Pirko */ 3203bcc0cecSJiri Pirko static inline bool tcf_exts_has_actions(struct tcf_exts *exts) 3213bcc0cecSJiri Pirko { 3222734437eSWANG Cong #ifdef CONFIG_NET_CLS_ACT 3233bcc0cecSJiri Pirko return exts->nr_actions; 3243bcc0cecSJiri Pirko #else 3253bcc0cecSJiri Pirko return false; 3263bcc0cecSJiri Pirko #endif 3273bcc0cecSJiri Pirko } 3282734437eSWANG Cong 3293bcc0cecSJiri Pirko /** 3303bcc0cecSJiri Pirko * tcf_exts_has_one_action - check if exactly one action is present 3313bcc0cecSJiri Pirko * @exts: tc filter extensions handle 3323bcc0cecSJiri Pirko * 3333bcc0cecSJiri Pirko * Returns true if exactly one action is present. 3343bcc0cecSJiri Pirko */ 3353bcc0cecSJiri Pirko static inline bool tcf_exts_has_one_action(struct tcf_exts *exts) 3363bcc0cecSJiri Pirko { 3373bcc0cecSJiri Pirko #ifdef CONFIG_NET_CLS_ACT 3383bcc0cecSJiri Pirko return exts->nr_actions == 1; 3393bcc0cecSJiri Pirko #else 3403bcc0cecSJiri Pirko return false; 3413bcc0cecSJiri Pirko #endif 3423bcc0cecSJiri Pirko } 3432734437eSWANG Cong 344af69afc5SJiri Pirko /** 345af69afc5SJiri Pirko * tcf_exts_exec - execute tc filter extensions 346af69afc5SJiri Pirko * @skb: socket buffer 347af69afc5SJiri Pirko * @exts: tc filter extensions handle 348af69afc5SJiri Pirko * @res: desired result 349af69afc5SJiri Pirko * 350af089e70SJiri Pirko * Executes all configured extensions. Returns TC_ACT_OK on a normal execution, 351af69afc5SJiri Pirko * a negative number if the filter must be considered unmatched or 352af69afc5SJiri Pirko * a positive action code (TC_ACT_*) which must be returned to the 353af69afc5SJiri Pirko * underlying layer. 354af69afc5SJiri Pirko */ 355af69afc5SJiri Pirko static inline int 356af69afc5SJiri Pirko tcf_exts_exec(struct sk_buff *skb, struct tcf_exts *exts, 357af69afc5SJiri Pirko struct tcf_result *res) 358af69afc5SJiri Pirko { 359af69afc5SJiri Pirko #ifdef CONFIG_NET_CLS_ACT 360ec1a9ccaSJiri Pirko return tcf_action_exec(skb, exts->actions, exts->nr_actions, res); 361af69afc5SJiri Pirko #endif 362af089e70SJiri Pirko return TC_ACT_OK; 363af69afc5SJiri Pirko } 364af69afc5SJiri Pirko 3655c15257fSJoe Perches int tcf_exts_validate(struct net *net, struct tcf_proto *tp, 366c1b52739SBenjamin LaHaise struct nlattr **tb, struct nlattr *rate_tlv, 3672f7ef2f8SCong Wang struct tcf_exts *exts, bool ovr); 36818d0264fSWANG Cong void tcf_exts_destroy(struct tcf_exts *exts); 3699b0d4446SJiri Pirko void tcf_exts_change(struct tcf_exts *dst, struct tcf_exts *src); 3705da57f42SWANG Cong int tcf_exts_dump(struct sk_buff *skb, struct tcf_exts *exts); 3715da57f42SWANG Cong int tcf_exts_dump_stats(struct sk_buff *skb, struct tcf_exts *exts); 3721da177e4SLinus Torvalds 3731da177e4SLinus Torvalds /** 3741da177e4SLinus Torvalds * struct tcf_pkt_info - packet information 3751da177e4SLinus Torvalds */ 376fd2c3ef7SEric Dumazet struct tcf_pkt_info { 3771da177e4SLinus Torvalds unsigned char * ptr; 3781da177e4SLinus Torvalds int nexthdr; 3791da177e4SLinus Torvalds }; 3801da177e4SLinus Torvalds 3811da177e4SLinus Torvalds #ifdef CONFIG_NET_EMATCH 3821da177e4SLinus Torvalds 3831da177e4SLinus Torvalds struct tcf_ematch_ops; 3841da177e4SLinus Torvalds 3851da177e4SLinus Torvalds /** 3861da177e4SLinus Torvalds * struct tcf_ematch - extended match (ematch) 3871da177e4SLinus Torvalds * 3881da177e4SLinus Torvalds * @matchid: identifier to allow userspace to reidentify a match 3891da177e4SLinus Torvalds * @flags: flags specifying attributes and the relation to other matches 3901da177e4SLinus Torvalds * @ops: the operations lookup table of the corresponding ematch module 3911da177e4SLinus Torvalds * @datalen: length of the ematch specific configuration data 3921da177e4SLinus Torvalds * @data: ematch specific data 3931da177e4SLinus Torvalds */ 394fd2c3ef7SEric Dumazet struct tcf_ematch { 3951da177e4SLinus Torvalds struct tcf_ematch_ops * ops; 3961da177e4SLinus Torvalds unsigned long data; 3971da177e4SLinus Torvalds unsigned int datalen; 3981da177e4SLinus Torvalds u16 matchid; 3991da177e4SLinus Torvalds u16 flags; 40082a470f1SJohn Fastabend struct net *net; 4011da177e4SLinus Torvalds }; 4021da177e4SLinus Torvalds 4031da177e4SLinus Torvalds static inline int tcf_em_is_container(struct tcf_ematch *em) 4041da177e4SLinus Torvalds { 4051da177e4SLinus Torvalds return !em->ops; 4061da177e4SLinus Torvalds } 4071da177e4SLinus Torvalds 4081da177e4SLinus Torvalds static inline int tcf_em_is_simple(struct tcf_ematch *em) 4091da177e4SLinus Torvalds { 4101da177e4SLinus Torvalds return em->flags & TCF_EM_SIMPLE; 4111da177e4SLinus Torvalds } 4121da177e4SLinus Torvalds 4131da177e4SLinus Torvalds static inline int tcf_em_is_inverted(struct tcf_ematch *em) 4141da177e4SLinus Torvalds { 4151da177e4SLinus Torvalds return em->flags & TCF_EM_INVERT; 4161da177e4SLinus Torvalds } 4171da177e4SLinus Torvalds 4181da177e4SLinus Torvalds static inline int tcf_em_last_match(struct tcf_ematch *em) 4191da177e4SLinus Torvalds { 4201da177e4SLinus Torvalds return (em->flags & TCF_EM_REL_MASK) == TCF_EM_REL_END; 4211da177e4SLinus Torvalds } 4221da177e4SLinus Torvalds 4231da177e4SLinus Torvalds static inline int tcf_em_early_end(struct tcf_ematch *em, int result) 4241da177e4SLinus Torvalds { 4251da177e4SLinus Torvalds if (tcf_em_last_match(em)) 4261da177e4SLinus Torvalds return 1; 4271da177e4SLinus Torvalds 4281da177e4SLinus Torvalds if (result == 0 && em->flags & TCF_EM_REL_AND) 4291da177e4SLinus Torvalds return 1; 4301da177e4SLinus Torvalds 4311da177e4SLinus Torvalds if (result != 0 && em->flags & TCF_EM_REL_OR) 4321da177e4SLinus Torvalds return 1; 4331da177e4SLinus Torvalds 4341da177e4SLinus Torvalds return 0; 4351da177e4SLinus Torvalds } 4361da177e4SLinus Torvalds 4371da177e4SLinus Torvalds /** 4381da177e4SLinus Torvalds * struct tcf_ematch_tree - ematch tree handle 4391da177e4SLinus Torvalds * 4401da177e4SLinus Torvalds * @hdr: ematch tree header supplied by userspace 4411da177e4SLinus Torvalds * @matches: array of ematches 4421da177e4SLinus Torvalds */ 443fd2c3ef7SEric Dumazet struct tcf_ematch_tree { 4441da177e4SLinus Torvalds struct tcf_ematch_tree_hdr hdr; 4451da177e4SLinus Torvalds struct tcf_ematch * matches; 4461da177e4SLinus Torvalds 4471da177e4SLinus Torvalds }; 4481da177e4SLinus Torvalds 4491da177e4SLinus Torvalds /** 4501da177e4SLinus Torvalds * struct tcf_ematch_ops - ematch module operations 4511da177e4SLinus Torvalds * 4521da177e4SLinus Torvalds * @kind: identifier (kind) of this ematch module 4531da177e4SLinus Torvalds * @datalen: length of expected configuration data (optional) 4541da177e4SLinus Torvalds * @change: called during validation (optional) 4551da177e4SLinus Torvalds * @match: called during ematch tree evaluation, must return 1/0 4561da177e4SLinus Torvalds * @destroy: called during destroyage (optional) 4571da177e4SLinus Torvalds * @dump: called during dumping process (optional) 4581da177e4SLinus Torvalds * @owner: owner, must be set to THIS_MODULE 4591da177e4SLinus Torvalds * @link: link to previous/next ematch module (internal use) 4601da177e4SLinus Torvalds */ 461fd2c3ef7SEric Dumazet struct tcf_ematch_ops { 4621da177e4SLinus Torvalds int kind; 4631da177e4SLinus Torvalds int datalen; 46482a470f1SJohn Fastabend int (*change)(struct net *net, void *, 4651da177e4SLinus Torvalds int, struct tcf_ematch *); 4661da177e4SLinus Torvalds int (*match)(struct sk_buff *, struct tcf_ematch *, 4671da177e4SLinus Torvalds struct tcf_pkt_info *); 46882a470f1SJohn Fastabend void (*destroy)(struct tcf_ematch *); 4691da177e4SLinus Torvalds int (*dump)(struct sk_buff *, struct tcf_ematch *); 4701da177e4SLinus Torvalds struct module *owner; 4711da177e4SLinus Torvalds struct list_head link; 4721da177e4SLinus Torvalds }; 4731da177e4SLinus Torvalds 4745c15257fSJoe Perches int tcf_em_register(struct tcf_ematch_ops *); 4755c15257fSJoe Perches void tcf_em_unregister(struct tcf_ematch_ops *); 4765c15257fSJoe Perches int tcf_em_tree_validate(struct tcf_proto *, struct nlattr *, 4771da177e4SLinus Torvalds struct tcf_ematch_tree *); 47882a470f1SJohn Fastabend void tcf_em_tree_destroy(struct tcf_ematch_tree *); 4795c15257fSJoe Perches int tcf_em_tree_dump(struct sk_buff *, struct tcf_ematch_tree *, int); 4805c15257fSJoe Perches int __tcf_em_tree_match(struct sk_buff *, struct tcf_ematch_tree *, 4811da177e4SLinus Torvalds struct tcf_pkt_info *); 4821da177e4SLinus Torvalds 4831da177e4SLinus Torvalds /** 4841da177e4SLinus Torvalds * tcf_em_tree_match - evaulate an ematch tree 4851da177e4SLinus Torvalds * 4861da177e4SLinus Torvalds * @skb: socket buffer of the packet in question 4871da177e4SLinus Torvalds * @tree: ematch tree to be used for evaluation 4881da177e4SLinus Torvalds * @info: packet information examined by classifier 4891da177e4SLinus Torvalds * 4901da177e4SLinus Torvalds * This function matches @skb against the ematch tree in @tree by going 4911da177e4SLinus Torvalds * through all ematches respecting their logic relations returning 4921da177e4SLinus Torvalds * as soon as the result is obvious. 4931da177e4SLinus Torvalds * 4941da177e4SLinus Torvalds * Returns 1 if the ematch tree as-one matches, no ematches are configured 4951da177e4SLinus Torvalds * or ematch is not enabled in the kernel, otherwise 0 is returned. 4961da177e4SLinus Torvalds */ 4971da177e4SLinus Torvalds static inline int tcf_em_tree_match(struct sk_buff *skb, 4981da177e4SLinus Torvalds struct tcf_ematch_tree *tree, 4991da177e4SLinus Torvalds struct tcf_pkt_info *info) 5001da177e4SLinus Torvalds { 5011da177e4SLinus Torvalds if (tree->hdr.nmatches) 5021da177e4SLinus Torvalds return __tcf_em_tree_match(skb, tree, info); 5031da177e4SLinus Torvalds else 5041da177e4SLinus Torvalds return 1; 5051da177e4SLinus Torvalds } 5061da177e4SLinus Torvalds 507db3d99c0SPatrick McHardy #define MODULE_ALIAS_TCF_EMATCH(kind) MODULE_ALIAS("ematch-kind-" __stringify(kind)) 508db3d99c0SPatrick McHardy 5091da177e4SLinus Torvalds #else /* CONFIG_NET_EMATCH */ 5101da177e4SLinus Torvalds 511fd2c3ef7SEric Dumazet struct tcf_ematch_tree { 5121da177e4SLinus Torvalds }; 5131da177e4SLinus Torvalds 5141da177e4SLinus Torvalds #define tcf_em_tree_validate(tp, tb, t) ((void)(t), 0) 51582a470f1SJohn Fastabend #define tcf_em_tree_destroy(t) do { (void)(t); } while(0) 5161da177e4SLinus Torvalds #define tcf_em_tree_dump(skb, t, tlv) (0) 5171da177e4SLinus Torvalds #define tcf_em_tree_match(skb, t, info) ((void)(info), 1) 5181da177e4SLinus Torvalds 5191da177e4SLinus Torvalds #endif /* CONFIG_NET_EMATCH */ 5201da177e4SLinus Torvalds 5211da177e4SLinus Torvalds static inline unsigned char * tcf_get_base_ptr(struct sk_buff *skb, int layer) 5221da177e4SLinus Torvalds { 5231da177e4SLinus Torvalds switch (layer) { 5241da177e4SLinus Torvalds case TCF_LAYER_LINK: 525d3303a65SWolfgang Bumiller return skb_mac_header(skb); 5261da177e4SLinus Torvalds case TCF_LAYER_NETWORK: 527d56f90a7SArnaldo Carvalho de Melo return skb_network_header(skb); 5281da177e4SLinus Torvalds case TCF_LAYER_TRANSPORT: 5299c70220bSArnaldo Carvalho de Melo return skb_transport_header(skb); 5301da177e4SLinus Torvalds } 5311da177e4SLinus Torvalds 5321da177e4SLinus Torvalds return NULL; 5331da177e4SLinus Torvalds } 5341da177e4SLinus Torvalds 535eddc9ec5SArnaldo Carvalho de Melo static inline int tcf_valid_offset(const struct sk_buff *skb, 536eddc9ec5SArnaldo Carvalho de Melo const unsigned char *ptr, const int len) 5371da177e4SLinus Torvalds { 538da521b2cSDavid S. Miller return likely((ptr + len) <= skb_tail_pointer(skb) && 539da521b2cSDavid S. Miller ptr >= skb->head && 540da521b2cSDavid S. Miller (ptr <= (ptr + len))); 5411da177e4SLinus Torvalds } 5421da177e4SLinus Torvalds 5431da177e4SLinus Torvalds #ifdef CONFIG_NET_CLS_IND 5440eeb8ffcSDenis V. Lunev #include <net/net_namespace.h> 5450eeb8ffcSDenis V. Lunev 5461da177e4SLinus Torvalds static inline int 5472519a602SWANG Cong tcf_change_indev(struct net *net, struct nlattr *indev_tlv) 5481da177e4SLinus Torvalds { 5492519a602SWANG Cong char indev[IFNAMSIZ]; 550c01003c2SPatrick McHardy struct net_device *dev; 551c01003c2SPatrick McHardy 5522519a602SWANG Cong if (nla_strlcpy(indev, indev_tlv, IFNAMSIZ) >= IFNAMSIZ) 5532519a602SWANG Cong return -EINVAL; 5542519a602SWANG Cong dev = __dev_get_by_name(net, indev); 5552519a602SWANG Cong if (!dev) 5562519a602SWANG Cong return -ENODEV; 5572519a602SWANG Cong return dev->ifindex; 5581da177e4SLinus Torvalds } 5591da177e4SLinus Torvalds 5602519a602SWANG Cong static inline bool 5612519a602SWANG Cong tcf_match_indev(struct sk_buff *skb, int ifindex) 5622519a602SWANG Cong { 5632519a602SWANG Cong if (!ifindex) 5642519a602SWANG Cong return true; 5652519a602SWANG Cong if (!skb->skb_iif) 5662519a602SWANG Cong return false; 5672519a602SWANG Cong return ifindex == skb->skb_iif; 5681da177e4SLinus Torvalds } 5691da177e4SLinus Torvalds #endif /* CONFIG_NET_CLS_IND */ 5701da177e4SLinus Torvalds 571208c0f4bSJiri Pirko int tc_setup_cb_call(struct tcf_block *block, struct tcf_exts *exts, 572208c0f4bSJiri Pirko enum tc_setup_type type, void *type_data, bool err_stop); 573717503b9SJiri Pirko 5748c4083b3SJiri Pirko enum tc_block_command { 5758c4083b3SJiri Pirko TC_BLOCK_BIND, 5768c4083b3SJiri Pirko TC_BLOCK_UNBIND, 5778c4083b3SJiri Pirko }; 5788c4083b3SJiri Pirko 5798c4083b3SJiri Pirko struct tc_block_offload { 5808c4083b3SJiri Pirko enum tc_block_command command; 5818c4083b3SJiri Pirko enum tcf_block_binder_type binder_type; 5828c4083b3SJiri Pirko struct tcf_block *block; 5838c4083b3SJiri Pirko }; 5848c4083b3SJiri Pirko 5855fd9fc4eSJiri Pirko struct tc_cls_common_offload { 5865fd9fc4eSJiri Pirko u32 chain_index; 5875fd9fc4eSJiri Pirko __be16 protocol; 588d7c1c8d2SJiri Pirko u32 prio; 5895fd9fc4eSJiri Pirko }; 5905fd9fc4eSJiri Pirko 5915fd9fc4eSJiri Pirko static inline void 5925fd9fc4eSJiri Pirko tc_cls_common_offload_init(struct tc_cls_common_offload *cls_common, 5935fd9fc4eSJiri Pirko const struct tcf_proto *tp) 5945fd9fc4eSJiri Pirko { 5955fd9fc4eSJiri Pirko cls_common->chain_index = tp->chain->index; 5965fd9fc4eSJiri Pirko cls_common->protocol = tp->protocol; 597d7c1c8d2SJiri Pirko cls_common->prio = tp->prio; 5985fd9fc4eSJiri Pirko } 5995fd9fc4eSJiri Pirko 600a1b7c5fdSJohn Fastabend struct tc_cls_u32_knode { 601a1b7c5fdSJohn Fastabend struct tcf_exts *exts; 602e014860eSJohn Fastabend struct tc_u32_sel *sel; 603a1b7c5fdSJohn Fastabend u32 handle; 604a1b7c5fdSJohn Fastabend u32 val; 605a1b7c5fdSJohn Fastabend u32 mask; 606a1b7c5fdSJohn Fastabend u32 link_handle; 607e014860eSJohn Fastabend u8 fshift; 608a1b7c5fdSJohn Fastabend }; 609a1b7c5fdSJohn Fastabend 610a1b7c5fdSJohn Fastabend struct tc_cls_u32_hnode { 611a1b7c5fdSJohn Fastabend u32 handle; 612a1b7c5fdSJohn Fastabend u32 prio; 613a1b7c5fdSJohn Fastabend unsigned int divisor; 614a1b7c5fdSJohn Fastabend }; 615a1b7c5fdSJohn Fastabend 616a1b7c5fdSJohn Fastabend enum tc_clsu32_command { 617a1b7c5fdSJohn Fastabend TC_CLSU32_NEW_KNODE, 618a1b7c5fdSJohn Fastabend TC_CLSU32_REPLACE_KNODE, 619a1b7c5fdSJohn Fastabend TC_CLSU32_DELETE_KNODE, 620a1b7c5fdSJohn Fastabend TC_CLSU32_NEW_HNODE, 621a1b7c5fdSJohn Fastabend TC_CLSU32_REPLACE_HNODE, 622a1b7c5fdSJohn Fastabend TC_CLSU32_DELETE_HNODE, 623a1b7c5fdSJohn Fastabend }; 624a1b7c5fdSJohn Fastabend 625a1b7c5fdSJohn Fastabend struct tc_cls_u32_offload { 6265fd9fc4eSJiri Pirko struct tc_cls_common_offload common; 627a1b7c5fdSJohn Fastabend /* knode values */ 628a1b7c5fdSJohn Fastabend enum tc_clsu32_command command; 629a1b7c5fdSJohn Fastabend union { 630a1b7c5fdSJohn Fastabend struct tc_cls_u32_knode knode; 631a1b7c5fdSJohn Fastabend struct tc_cls_u32_hnode hnode; 632a1b7c5fdSJohn Fastabend }; 633a1b7c5fdSJohn Fastabend }; 634a1b7c5fdSJohn Fastabend 6357b06e8aeSJiri Pirko static inline bool tc_can_offload(const struct net_device *dev) 6366843e7a2SJohn Fastabend { 63770b5aee4SJiri Pirko return dev->features & NETIF_F_HW_TC; 6386843e7a2SJohn Fastabend } 6396843e7a2SJohn Fastabend 64055330f05SHadar Hen Zion static inline bool tc_skip_hw(u32 flags) 64155330f05SHadar Hen Zion { 64255330f05SHadar Hen Zion return (flags & TCA_CLS_FLAGS_SKIP_HW) ? true : false; 64355330f05SHadar Hen Zion } 64455330f05SHadar Hen Zion 645d34e3e18SSamudrala, Sridhar static inline bool tc_skip_sw(u32 flags) 646d34e3e18SSamudrala, Sridhar { 647d34e3e18SSamudrala, Sridhar return (flags & TCA_CLS_FLAGS_SKIP_SW) ? true : false; 648d34e3e18SSamudrala, Sridhar } 649d34e3e18SSamudrala, Sridhar 650d34e3e18SSamudrala, Sridhar /* SKIP_HW and SKIP_SW are mutually exclusive flags. */ 651d34e3e18SSamudrala, Sridhar static inline bool tc_flags_valid(u32 flags) 652d34e3e18SSamudrala, Sridhar { 653d34e3e18SSamudrala, Sridhar if (flags & ~(TCA_CLS_FLAGS_SKIP_HW | TCA_CLS_FLAGS_SKIP_SW)) 654d34e3e18SSamudrala, Sridhar return false; 655d34e3e18SSamudrala, Sridhar 656d34e3e18SSamudrala, Sridhar if (!(flags ^ (TCA_CLS_FLAGS_SKIP_HW | TCA_CLS_FLAGS_SKIP_SW))) 657d34e3e18SSamudrala, Sridhar return false; 658d34e3e18SSamudrala, Sridhar 659d34e3e18SSamudrala, Sridhar return true; 660d34e3e18SSamudrala, Sridhar } 661d34e3e18SSamudrala, Sridhar 662e696028aSOr Gerlitz static inline bool tc_in_hw(u32 flags) 663e696028aSOr Gerlitz { 664e696028aSOr Gerlitz return (flags & TCA_CLS_FLAGS_IN_HW) ? true : false; 665e696028aSOr Gerlitz } 666e696028aSOr Gerlitz 6675b33f488SAmir Vadai enum tc_fl_command { 6685b33f488SAmir Vadai TC_CLSFLOWER_REPLACE, 6695b33f488SAmir Vadai TC_CLSFLOWER_DESTROY, 67010cbc684SAmir Vadai TC_CLSFLOWER_STATS, 6715b33f488SAmir Vadai }; 6725b33f488SAmir Vadai 6735b33f488SAmir Vadai struct tc_cls_flower_offload { 6745fd9fc4eSJiri Pirko struct tc_cls_common_offload common; 6755b33f488SAmir Vadai enum tc_fl_command command; 6768208d21bSAmir Vadai unsigned long cookie; 6775b33f488SAmir Vadai struct flow_dissector *dissector; 6785b33f488SAmir Vadai struct fl_flow_key *mask; 6795b33f488SAmir Vadai struct fl_flow_key *key; 6805b33f488SAmir Vadai struct tcf_exts *exts; 681384c181eSAmritha Nambiar u32 classid; 6825b33f488SAmir Vadai }; 6835b33f488SAmir Vadai 684b87f7936SYotam Gigi enum tc_matchall_command { 685b87f7936SYotam Gigi TC_CLSMATCHALL_REPLACE, 686b87f7936SYotam Gigi TC_CLSMATCHALL_DESTROY, 687b87f7936SYotam Gigi }; 688b87f7936SYotam Gigi 689b87f7936SYotam Gigi struct tc_cls_matchall_offload { 6905fd9fc4eSJiri Pirko struct tc_cls_common_offload common; 691b87f7936SYotam Gigi enum tc_matchall_command command; 692b87f7936SYotam Gigi struct tcf_exts *exts; 693b87f7936SYotam Gigi unsigned long cookie; 694b87f7936SYotam Gigi }; 695b87f7936SYotam Gigi 696332ae8e2SJakub Kicinski enum tc_clsbpf_command { 697102740bdSJakub Kicinski TC_CLSBPF_OFFLOAD, 69868d64063SJakub Kicinski TC_CLSBPF_STATS, 699332ae8e2SJakub Kicinski }; 700332ae8e2SJakub Kicinski 701332ae8e2SJakub Kicinski struct tc_cls_bpf_offload { 7025fd9fc4eSJiri Pirko struct tc_cls_common_offload common; 703332ae8e2SJakub Kicinski enum tc_clsbpf_command command; 704332ae8e2SJakub Kicinski struct tcf_exts *exts; 705332ae8e2SJakub Kicinski struct bpf_prog *prog; 706102740bdSJakub Kicinski struct bpf_prog *oldprog; 707332ae8e2SJakub Kicinski const char *name; 708332ae8e2SJakub Kicinski bool exts_integrated; 7090d01d45fSJakub Kicinski u32 gen_flags; 710332ae8e2SJakub Kicinski }; 711332ae8e2SJakub Kicinski 7124e8b86c0SAmritha Nambiar struct tc_mqprio_qopt_offload { 7134e8b86c0SAmritha Nambiar /* struct tc_mqprio_qopt must always be the first element */ 7144e8b86c0SAmritha Nambiar struct tc_mqprio_qopt qopt; 7154e8b86c0SAmritha Nambiar u16 mode; 7164e8b86c0SAmritha Nambiar u16 shaper; 7174e8b86c0SAmritha Nambiar u32 flags; 7184e8b86c0SAmritha Nambiar u64 min_rate[TC_QOPT_MAX_QUEUE]; 7194e8b86c0SAmritha Nambiar u64 max_rate[TC_QOPT_MAX_QUEUE]; 7204e8b86c0SAmritha Nambiar }; 7211045ba77SJamal Hadi Salim 7221045ba77SJamal Hadi Salim /* This structure holds cookie structure that is passed from user 7231045ba77SJamal Hadi Salim * to the kernel for actions and classifiers 7241045ba77SJamal Hadi Salim */ 7251045ba77SJamal Hadi Salim struct tc_cookie { 7261045ba77SJamal Hadi Salim u8 *data; 7271045ba77SJamal Hadi Salim u32 len; 7281045ba77SJamal Hadi Salim }; 729602f3bafSNogah Frankel 730602f3bafSNogah Frankel enum tc_red_command { 731602f3bafSNogah Frankel TC_RED_REPLACE, 732602f3bafSNogah Frankel TC_RED_DESTROY, 733602f3bafSNogah Frankel TC_RED_STATS, 734602f3bafSNogah Frankel TC_RED_XSTATS, 735602f3bafSNogah Frankel }; 736602f3bafSNogah Frankel 737602f3bafSNogah Frankel struct tc_red_qopt_offload_params { 738602f3bafSNogah Frankel u32 min; 739602f3bafSNogah Frankel u32 max; 740602f3bafSNogah Frankel u32 probability; 741602f3bafSNogah Frankel bool is_ecn; 742602f3bafSNogah Frankel }; 743602f3bafSNogah Frankel struct tc_red_qopt_offload_stats { 744602f3bafSNogah Frankel struct gnet_stats_basic_packed *bstats; 745602f3bafSNogah Frankel struct gnet_stats_queue *qstats; 746602f3bafSNogah Frankel }; 747602f3bafSNogah Frankel 748602f3bafSNogah Frankel struct tc_red_qopt_offload { 749602f3bafSNogah Frankel enum tc_red_command command; 750602f3bafSNogah Frankel u32 handle; 751602f3bafSNogah Frankel u32 parent; 752602f3bafSNogah Frankel union { 753602f3bafSNogah Frankel struct tc_red_qopt_offload_params set; 754602f3bafSNogah Frankel struct tc_red_qopt_offload_stats stats; 755602f3bafSNogah Frankel struct red_stats *xstats; 756602f3bafSNogah Frankel }; 757602f3bafSNogah Frankel }; 758602f3bafSNogah Frankel 7591da177e4SLinus Torvalds #endif 760