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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 |
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