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_est64 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_hashinfo { 39 struct tcf_common **htab; 40 unsigned int hmask; 41 rwlock_t *lock; 42 }; 43 44 static inline unsigned int tcf_hash(u32 index, unsigned int hmask) 45 { 46 return index & hmask; 47 } 48 49 #ifdef CONFIG_NET_CLS_ACT 50 51 #define ACT_P_CREATED 1 52 #define ACT_P_DELETED 1 53 54 struct tcf_act_hdr { 55 struct tcf_common common; 56 }; 57 58 struct tc_action { 59 void *priv; 60 const struct tc_action_ops *ops; 61 __u32 type; /* for backward compat(TCA_OLD_COMPAT) */ 62 __u32 order; 63 struct tc_action *next; 64 }; 65 66 #define TCA_CAP_NONE 0 67 struct tc_action_ops { 68 struct tc_action_ops *next; 69 struct tcf_hashinfo *hinfo; 70 char kind[IFNAMSIZ]; 71 __u32 type; /* TBD to match kind */ 72 __u32 capab; /* capabilities includes 4 bit version */ 73 struct module *owner; 74 int (*act)(struct sk_buff *, const struct tc_action *, struct tcf_result *); 75 int (*get_stats)(struct sk_buff *, struct tc_action *); 76 int (*dump)(struct sk_buff *, struct tc_action *, int, int); 77 int (*cleanup)(struct tc_action *, int bind); 78 int (*lookup)(struct tc_action *, u32); 79 int (*init)(struct net *net, struct nlattr *nla, 80 struct nlattr *est, struct tc_action *act, int ovr, 81 int bind); 82 int (*walk)(struct sk_buff *, struct netlink_callback *, int, struct tc_action *); 83 }; 84 85 struct tcf_common *tcf_hash_lookup(u32 index, struct tcf_hashinfo *hinfo); 86 void tcf_hash_destroy(struct tcf_common *p, struct tcf_hashinfo *hinfo); 87 int tcf_hash_release(struct tcf_common *p, int bind, 88 struct tcf_hashinfo *hinfo); 89 int tcf_generic_walker(struct sk_buff *skb, struct netlink_callback *cb, 90 int type, struct tc_action *a); 91 u32 tcf_hash_new_index(u32 *idx_gen, struct tcf_hashinfo *hinfo); 92 int tcf_hash_search(struct tc_action *a, u32 index); 93 struct tcf_common *tcf_hash_check(u32 index, struct tc_action *a, 94 int bind, struct tcf_hashinfo *hinfo); 95 struct tcf_common *tcf_hash_create(u32 index, struct nlattr *est, 96 struct tc_action *a, int size, 97 int bind, u32 *idx_gen, 98 struct tcf_hashinfo *hinfo); 99 void tcf_hash_insert(struct tcf_common *p, struct tcf_hashinfo *hinfo); 100 101 int tcf_register_action(struct tc_action_ops *a); 102 int tcf_unregister_action(struct tc_action_ops *a); 103 void tcf_action_destroy(struct tc_action *a, int bind); 104 int tcf_action_exec(struct sk_buff *skb, const struct tc_action *a, 105 struct tcf_result *res); 106 struct tc_action *tcf_action_init(struct net *net, struct nlattr *nla, 107 struct nlattr *est, char *n, int ovr, 108 int bind); 109 struct tc_action *tcf_action_init_1(struct net *net, struct nlattr *nla, 110 struct nlattr *est, char *n, int ovr, 111 int bind); 112 int tcf_action_dump(struct sk_buff *skb, struct tc_action *a, int, int); 113 int tcf_action_dump_old(struct sk_buff *skb, struct tc_action *a, int, int); 114 int tcf_action_dump_1(struct sk_buff *skb, struct tc_action *a, int, int); 115 int tcf_action_copy_stats(struct sk_buff *, struct tc_action *, int); 116 #endif /* CONFIG_NET_CLS_ACT */ 117 #endif 118