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1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 84 85 86 87 88 89 90 91 92 93 94 95 96 97 98 99 100 101 102 103 104 105 106 107 108 109 110 111 112 113 114 115 116 | #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> #define tca_gen(name) \ struct tcf_##name *next; \ u32 index; \ int refcnt; \ int bindcnt; \ u32 capab; \ int action; \ struct tcf_t tm; \ struct gnet_stats_basic bstats; \ struct gnet_stats_queue qstats; \ struct gnet_stats_rate_est rate_est; \ spinlock_t *stats_lock; \ spinlock_t lock struct tcf_police { tca_gen(police); int result; u32 ewma_rate; u32 burst; u32 mtu; u32 toks; u32 ptoks; psched_time_t t_c; struct qdisc_rate_table *R_tab; struct qdisc_rate_table *P_tab; }; #ifdef CONFIG_NET_CLS_ACT #define ACT_P_CREATED 1 #define ACT_P_DELETED 1 struct tcf_act_hdr { tca_gen(act_hdr); }; 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; 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 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->bindcnt--; } p->refcnt--; if (p->refcnt <= 0 && !p->bindcnt) { tcf_police_destroy(p); ret = 1; } } #else if (p && --p->refcnt == 0) tcf_police_destroy(p); #endif /* CONFIG_NET_CLS_ACT */ return ret; } #endif |