#ifndef __NET_ACT_API_H #define __NET_ACT_API_H /* * Public police action API for classifiers/qdiscs */ #include <net/sch_generic.h> #include <net/pkt_sched.h> struct tcf_common { struct tcf_common *tcfc_next; u32 tcfc_index; int tcfc_refcnt; int tcfc_bindcnt; u32 tcfc_capab; int tcfc_action; struct tcf_t tcfc_tm; struct gnet_stats_basic tcfc_bstats; struct gnet_stats_queue tcfc_qstats; struct gnet_stats_rate_est tcfc_rate_est; spinlock_t *tcfc_stats_lock; spinlock_t tcfc_lock; }; #define tcf_next common.tcfc_next #define tcf_index common.tcfc_index #define tcf_refcnt common.tcfc_refcnt #define tcf_bindcnt common.tcfc_bindcnt #define tcf_capab common.tcfc_capab #define tcf_action common.tcfc_action #define tcf_tm common.tcfc_tm #define tcf_bstats common.tcfc_bstats #define tcf_qstats common.tcfc_qstats #define tcf_rate_est common.tcfc_rate_est #define tcf_stats_lock common.tcfc_stats_lock #define tcf_lock common.tcfc_lock struct tcf_police { struct tcf_common common; int tcfp_result; u32 tcfp_ewma_rate; u32 tcfp_burst; u32 tcfp_mtu; u32 tcfp_toks; u32 tcfp_ptoks; psched_time_t tcfp_t_c; struct qdisc_rate_table *tcfp_R_tab; struct qdisc_rate_table *tcfp_P_tab; }; #define to_police(pc) \ container_of(pc, struct tcf_police, common) struct tcf_hashinfo { struct tcf_common **htab; unsigned int hmask; rwlock_t *lock; }; static inline unsigned int tcf_hash(u32 index, unsigned int hmask) { return index & hmask; } #ifdef CONFIG_NET_CLS_ACT #define ACT_P_CREATED 1 #define ACT_P_DELETED 1 struct tcf_act_hdr { struct tcf_common common; }; struct tc_action { void *priv; struct tc_action_ops *ops; __u32 type; /* for backward compat(TCA_OLD_COMPAT) */ __u32 order; struct tc_action *next; }; #define TCA_CAP_NONE 0 struct tc_action_ops { struct tc_action_ops *next; struct tcf_hashinfo *hinfo; char kind[IFNAMSIZ]; __u32 type; /* TBD to match kind */ __u32 capab; /* capabilities includes 4 bit version */ struct module *owner; int (*act)(struct sk_buff *, struct tc_action *, struct tcf_result *); int (*get_stats)(struct sk_buff *, struct tc_action *); int (*dump)(struct sk_buff *, struct tc_action *, int, int); int (*cleanup)(struct tc_action *, int bind); int (*lookup)(struct tc_action *, u32); int (*init)(struct rtattr *, struct rtattr *, struct tc_action *, int , int); int (*walk)(struct sk_buff *, struct netlink_callback *, int, struct tc_action *); }; extern struct tcf_common *tcf_hash_lookup(u32 index, struct tcf_hashinfo *hinfo); extern void tcf_hash_destroy(struct tcf_common *p, struct tcf_hashinfo *hinfo); extern int tcf_hash_release(struct tcf_common *p, int bind, struct tcf_hashinfo *hinfo); extern int tcf_generic_walker(struct sk_buff *skb, struct netlink_callback *cb, int type, struct tc_action *a); extern u32 tcf_hash_new_index(u32 *idx_gen, struct tcf_hashinfo *hinfo); extern int tcf_hash_search(struct tc_action *a, u32 index); extern struct tcf_common *tcf_hash_check(u32 index, struct tc_action *a, int bind, struct tcf_hashinfo *hinfo); extern struct tcf_common *tcf_hash_create(u32 index, struct rtattr *est, struct tc_action *a, int size, int bind, u32 *idx_gen, struct tcf_hashinfo *hinfo); extern void tcf_hash_insert(struct tcf_common *p, struct tcf_hashinfo *hinfo); extern int tcf_register_action(struct tc_action_ops *a); extern int tcf_unregister_action(struct tc_action_ops *a); extern void tcf_action_destroy(struct tc_action *a, int bind); extern int tcf_action_exec(struct sk_buff *skb, struct tc_action *a, struct tcf_result *res); extern struct tc_action *tcf_action_init(struct rtattr *rta, struct rtattr *est, char *n, int ovr, int bind, int *err); extern struct tc_action *tcf_action_init_1(struct rtattr *rta, struct rtattr *est, char *n, int ovr, int bind, int *err); extern int tcf_action_dump(struct sk_buff *skb, struct tc_action *a, int, int); extern int tcf_action_dump_old(struct sk_buff *skb, struct tc_action *a, int, int); extern int tcf_action_dump_1(struct sk_buff *skb, struct tc_action *a, int, int); extern int tcf_action_copy_stats (struct sk_buff *,struct tc_action *, int); #endif /* CONFIG_NET_CLS_ACT */ extern int tcf_police(struct sk_buff *skb, struct tcf_police *p); extern void tcf_police_destroy(struct tcf_police *p); extern struct tcf_police * tcf_police_locate(struct rtattr *rta, struct rtattr *est); extern int tcf_police_dump(struct sk_buff *skb, struct tcf_police *p); extern int tcf_police_dump_stats(struct sk_buff *skb, struct tcf_police *p); static inline int tcf_police_release(struct tcf_police *p, int bind) { int ret = 0; #ifdef CONFIG_NET_CLS_ACT if (p) { if (bind) p->tcf_bindcnt--; p->tcf_refcnt--; if (p->tcf_refcnt <= 0 && !p->tcf_bindcnt) { tcf_police_destroy(p); ret = 1; } } #else if (p && --p->tcf_refcnt == 0) tcf_police_destroy(p); #endif /* CONFIG_NET_CLS_ACT */ return ret; } #endif