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 };
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
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