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
tcf_hash(u32 index,unsigned int hmask)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