1 #ifndef __NET_ACT_API_H 2 #define __NET_ACT_API_H 3 4 /* 5 * Public police action API for classifiers/qdiscs 6 */ 7 8 #include <net/sch_generic.h> 9 #include <net/pkt_sched.h> 10 11 struct tcf_common { 12 struct tcf_common *tcfc_next; 13 u32 tcfc_index; 14 int tcfc_refcnt; 15 int tcfc_bindcnt; 16 u32 tcfc_capab; 17 int tcfc_action; 18 struct tcf_t tcfc_tm; 19 struct gnet_stats_basic tcfc_bstats; 20 struct gnet_stats_queue tcfc_qstats; 21 struct gnet_stats_rate_est tcfc_rate_est; 22 spinlock_t tcfc_lock; 23 }; 24 #define tcf_next common.tcfc_next 25 #define tcf_index common.tcfc_index 26 #define tcf_refcnt common.tcfc_refcnt 27 #define tcf_bindcnt common.tcfc_bindcnt 28 #define tcf_capab common.tcfc_capab 29 #define tcf_action common.tcfc_action 30 #define tcf_tm common.tcfc_tm 31 #define tcf_bstats common.tcfc_bstats 32 #define tcf_qstats common.tcfc_qstats 33 #define tcf_rate_est common.tcfc_rate_est 34 #define tcf_lock common.tcfc_lock 35 36 struct tcf_police { 37 struct tcf_common common; 38 int tcfp_result; 39 u32 tcfp_ewma_rate; 40 u32 tcfp_burst; 41 u32 tcfp_mtu; 42 u32 tcfp_toks; 43 u32 tcfp_ptoks; 44 psched_time_t tcfp_t_c; 45 struct qdisc_rate_table *tcfp_R_tab; 46 struct qdisc_rate_table *tcfp_P_tab; 47 }; 48 #define to_police(pc) \ 49 container_of(pc, struct tcf_police, common) 50 51 struct tcf_hashinfo { 52 struct tcf_common **htab; 53 unsigned int hmask; 54 rwlock_t *lock; 55 }; 56 57 static inline unsigned int tcf_hash(u32 index, unsigned int hmask) 58 { 59 return index & hmask; 60 } 61 62 #ifdef CONFIG_NET_CLS_ACT 63 64 #define ACT_P_CREATED 1 65 #define ACT_P_DELETED 1 66 67 struct tcf_act_hdr { 68 struct tcf_common common; 69 }; 70 71 struct tc_action { 72 void *priv; 73 struct tc_action_ops *ops; 74 __u32 type; /* for backward compat(TCA_OLD_COMPAT) */ 75 __u32 order; 76 struct tc_action *next; 77 }; 78 79 #define TCA_CAP_NONE 0 80 struct tc_action_ops { 81 struct tc_action_ops *next; 82 struct tcf_hashinfo *hinfo; 83 char kind[IFNAMSIZ]; 84 __u32 type; /* TBD to match kind */ 85 __u32 capab; /* capabilities includes 4 bit version */ 86 struct module *owner; 87 int (*act)(struct sk_buff *, struct tc_action *, struct tcf_result *); 88 int (*get_stats)(struct sk_buff *, struct tc_action *); 89 int (*dump)(struct sk_buff *, struct tc_action *, int, int); 90 int (*cleanup)(struct tc_action *, int bind); 91 int (*lookup)(struct tc_action *, u32); 92 int (*init)(struct nlattr *, struct nlattr *, struct tc_action *, int , int); 93 int (*walk)(struct sk_buff *, struct netlink_callback *, int, struct tc_action *); 94 }; 95 96 extern struct tcf_common *tcf_hash_lookup(u32 index, 97 struct tcf_hashinfo *hinfo); 98 extern void tcf_hash_destroy(struct tcf_common *p, struct tcf_hashinfo *hinfo); 99 extern int tcf_hash_release(struct tcf_common *p, int bind, 100 struct tcf_hashinfo *hinfo); 101 extern int tcf_generic_walker(struct sk_buff *skb, struct netlink_callback *cb, 102 int type, struct tc_action *a); 103 extern u32 tcf_hash_new_index(u32 *idx_gen, struct tcf_hashinfo *hinfo); 104 extern int tcf_hash_search(struct tc_action *a, u32 index); 105 extern struct tcf_common *tcf_hash_check(u32 index, struct tc_action *a, 106 int bind, struct tcf_hashinfo *hinfo); 107 extern struct tcf_common *tcf_hash_create(u32 index, struct nlattr *est, 108 struct tc_action *a, int size, 109 int bind, u32 *idx_gen, 110 struct tcf_hashinfo *hinfo); 111 extern void tcf_hash_insert(struct tcf_common *p, struct tcf_hashinfo *hinfo); 112 113 extern int tcf_register_action(struct tc_action_ops *a); 114 extern int tcf_unregister_action(struct tc_action_ops *a); 115 extern void tcf_action_destroy(struct tc_action *a, int bind); 116 extern int tcf_action_exec(struct sk_buff *skb, struct tc_action *a, struct tcf_result *res); 117 extern struct tc_action *tcf_action_init(struct nlattr *nla, struct nlattr *est, char *n, int ovr, int bind); 118 extern struct tc_action *tcf_action_init_1(struct nlattr *nla, struct nlattr *est, char *n, int ovr, int bind); 119 extern int tcf_action_dump(struct sk_buff *skb, struct tc_action *a, int, int); 120 extern int tcf_action_dump_old(struct sk_buff *skb, struct tc_action *a, int, int); 121 extern int tcf_action_dump_1(struct sk_buff *skb, struct tc_action *a, int, int); 122 extern int tcf_action_copy_stats (struct sk_buff *,struct tc_action *, int); 123 #endif /* CONFIG_NET_CLS_ACT */ 124 #endif 125