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_packed tcfc_bstats; 20 struct gnet_stats_queue tcfc_qstats; 21 struct gnet_stats_rate_est tcfc_rate_est; 22 spinlock_t tcfc_lock; 23 struct rcu_head tcfc_rcu; 24 }; 25 #define tcf_next common.tcfc_next 26 #define tcf_index common.tcfc_index 27 #define tcf_refcnt common.tcfc_refcnt 28 #define tcf_bindcnt common.tcfc_bindcnt 29 #define tcf_capab common.tcfc_capab 30 #define tcf_action common.tcfc_action 31 #define tcf_tm common.tcfc_tm 32 #define tcf_bstats common.tcfc_bstats 33 #define tcf_qstats common.tcfc_qstats 34 #define tcf_rate_est common.tcfc_rate_est 35 #define tcf_lock common.tcfc_lock 36 #define tcf_rcu common.tcfc_rcu 37 38 struct tcf_police { 39 struct tcf_common common; 40 int tcfp_result; 41 u32 tcfp_ewma_rate; 42 u32 tcfp_burst; 43 u32 tcfp_mtu; 44 u32 tcfp_toks; 45 u32 tcfp_ptoks; 46 psched_time_t tcfp_t_c; 47 struct qdisc_rate_table *tcfp_R_tab; 48 struct qdisc_rate_table *tcfp_P_tab; 49 }; 50 #define to_police(pc) \ 51 container_of(pc, struct tcf_police, common) 52 53 struct tcf_hashinfo { 54 struct tcf_common **htab; 55 unsigned int hmask; 56 rwlock_t *lock; 57 }; 58 59 static inline unsigned int tcf_hash(u32 index, unsigned int hmask) 60 { 61 return index & hmask; 62 } 63 64 #ifdef CONFIG_NET_CLS_ACT 65 66 #define ACT_P_CREATED 1 67 #define ACT_P_DELETED 1 68 69 struct tcf_act_hdr { 70 struct tcf_common common; 71 }; 72 73 struct tc_action { 74 void *priv; 75 const struct tc_action_ops *ops; 76 __u32 type; /* for backward compat(TCA_OLD_COMPAT) */ 77 __u32 order; 78 struct tc_action *next; 79 }; 80 81 #define TCA_CAP_NONE 0 82 struct tc_action_ops { 83 struct tc_action_ops *next; 84 struct tcf_hashinfo *hinfo; 85 char kind[IFNAMSIZ]; 86 __u32 type; /* TBD to match kind */ 87 __u32 capab; /* capabilities includes 4 bit version */ 88 struct module *owner; 89 int (*act)(struct sk_buff *, const struct tc_action *, struct tcf_result *); 90 int (*get_stats)(struct sk_buff *, struct tc_action *); 91 int (*dump)(struct sk_buff *, struct tc_action *, int, int); 92 int (*cleanup)(struct tc_action *, int bind); 93 int (*lookup)(struct tc_action *, u32); 94 int (*init)(struct nlattr *, struct nlattr *, struct tc_action *, int , int); 95 int (*walk)(struct sk_buff *, struct netlink_callback *, int, struct tc_action *); 96 }; 97 98 extern struct tcf_common *tcf_hash_lookup(u32 index, 99 struct tcf_hashinfo *hinfo); 100 extern void tcf_hash_destroy(struct tcf_common *p, struct tcf_hashinfo *hinfo); 101 extern int tcf_hash_release(struct tcf_common *p, int bind, 102 struct tcf_hashinfo *hinfo); 103 extern int tcf_generic_walker(struct sk_buff *skb, struct netlink_callback *cb, 104 int type, struct tc_action *a); 105 extern u32 tcf_hash_new_index(u32 *idx_gen, struct tcf_hashinfo *hinfo); 106 extern int tcf_hash_search(struct tc_action *a, u32 index); 107 extern struct tcf_common *tcf_hash_check(u32 index, struct tc_action *a, 108 int bind, struct tcf_hashinfo *hinfo); 109 extern struct tcf_common *tcf_hash_create(u32 index, struct nlattr *est, 110 struct tc_action *a, int size, 111 int bind, u32 *idx_gen, 112 struct tcf_hashinfo *hinfo); 113 extern void tcf_hash_insert(struct tcf_common *p, struct tcf_hashinfo *hinfo); 114 115 extern int tcf_register_action(struct tc_action_ops *a); 116 extern int tcf_unregister_action(struct tc_action_ops *a); 117 extern void tcf_action_destroy(struct tc_action *a, int bind); 118 extern int tcf_action_exec(struct sk_buff *skb, const struct tc_action *a, struct tcf_result *res); 119 extern struct tc_action *tcf_action_init(struct nlattr *nla, struct nlattr *est, char *n, int ovr, int bind); 120 extern struct tc_action *tcf_action_init_1(struct nlattr *nla, struct nlattr *est, char *n, int ovr, int bind); 121 extern int tcf_action_dump(struct sk_buff *skb, struct tc_action *a, int, int); 122 extern int tcf_action_dump_old(struct sk_buff *skb, struct tc_action *a, int, int); 123 extern int tcf_action_dump_1(struct sk_buff *skb, struct tc_action *a, int, int); 124 extern int tcf_action_copy_stats (struct sk_buff *,struct tc_action *, int); 125 #endif /* CONFIG_NET_CLS_ACT */ 126 #endif 127