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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
11struct 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
38struct tcf_hashinfo {
39 struct tcf_common **htab;
40 unsigned int hmask;
41 rwlock_t *lock;
42};
43
44static 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
54struct tcf_act_hdr {
55 struct tcf_common common;
56};
57
58struct 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
67struct 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
85struct tcf_common *tcf_hash_lookup(u32 index, struct tcf_hashinfo *hinfo);
86void tcf_hash_destroy(struct tcf_common *p, struct tcf_hashinfo *hinfo);
87int tcf_hash_release(struct tcf_common *p, int bind,
88 struct tcf_hashinfo *hinfo);
89int tcf_generic_walker(struct sk_buff *skb, struct netlink_callback *cb,
90 int type, struct tc_action *a);
91u32 tcf_hash_new_index(u32 *idx_gen, struct tcf_hashinfo *hinfo);
92int tcf_hash_search(struct tc_action *a, u32 index);
93struct tcf_common *tcf_hash_check(u32 index, struct tc_action *a,
94 int bind, struct tcf_hashinfo *hinfo);
95struct 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);
99void tcf_hash_insert(struct tcf_common *p, struct tcf_hashinfo *hinfo);
100
101int tcf_register_action(struct tc_action_ops *a);
102int tcf_unregister_action(struct tc_action_ops *a);
103void tcf_action_destroy(struct tc_action *a, int bind);
104int tcf_action_exec(struct sk_buff *skb, const struct tc_action *a,
105 struct tcf_result *res);
106struct tc_action *tcf_action_init(struct net *net, struct nlattr *nla,
107 struct nlattr *est, char *n, int ovr,
108 int bind);
109struct tc_action *tcf_action_init_1(struct net *net, struct nlattr *nla,
110 struct nlattr *est, char *n, int ovr,
111 int bind);
112int tcf_action_dump(struct sk_buff *skb, struct tc_action *a, int, int);
113int tcf_action_dump_old(struct sk_buff *skb, struct tc_action *a, int, int);
114int tcf_action_dump_1(struct sk_buff *skb, struct tc_action *a, int, int);
115int tcf_action_copy_stats(struct sk_buff *, struct tc_action *, int);
116#endif /* CONFIG_NET_CLS_ACT */
117#endif