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1da177e4 LT |
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 | ||
e9ce1cd3 DM |
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; | |
c1a8f1f1 | 19 | struct gnet_stats_basic_packed tcfc_bstats; |
e9ce1cd3 | 20 | struct gnet_stats_queue tcfc_qstats; |
45203a3b | 21 | struct gnet_stats_rate_est64 tcfc_rate_est; |
e9ce1cd3 | 22 | spinlock_t tcfc_lock; |
c7de2cf0 | 23 | struct rcu_head tcfc_rcu; |
e9ce1cd3 DM |
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 | |
e9ce1cd3 | 35 | #define tcf_lock common.tcfc_lock |
c7de2cf0 | 36 | #define tcf_rcu common.tcfc_rcu |
e9ce1cd3 | 37 | |
e9ce1cd3 DM |
38 | struct tcf_hashinfo { |
39 | struct tcf_common **htab; | |
40 | unsigned int hmask; | |
369ba567 | 41 | rwlock_t lock; |
e9ce1cd3 DM |
42 | }; |
43 | ||
44 | static inline unsigned int tcf_hash(u32 index, unsigned int hmask) | |
45 | { | |
46 | return index & hmask; | |
47 | } | |
1da177e4 | 48 | |
369ba567 WC |
49 | static inline int tcf_hashinfo_init(struct tcf_hashinfo *hf, unsigned int mask) |
50 | { | |
51 | rwlock_init(&hf->lock); | |
52 | hf->hmask = mask; | |
53 | hf->htab = kzalloc((mask + 1) * sizeof(struct tcf_common *), | |
54 | GFP_KERNEL); | |
55 | if (!hf->htab) | |
56 | return -ENOMEM; | |
57 | return 0; | |
58 | } | |
59 | ||
60 | static inline void tcf_hashinfo_destroy(struct tcf_hashinfo *hf) | |
61 | { | |
62 | kfree(hf->htab); | |
63 | } | |
64 | ||
1da177e4 LT |
65 | #ifdef CONFIG_NET_CLS_ACT |
66 | ||
67 | #define ACT_P_CREATED 1 | |
68 | #define ACT_P_DELETED 1 | |
69 | ||
e9ce1cd3 DM |
70 | struct tcf_act_hdr { |
71 | struct tcf_common common; | |
1da177e4 LT |
72 | }; |
73 | ||
e9ce1cd3 DM |
74 | struct tc_action { |
75 | void *priv; | |
dc7f9f6e | 76 | const struct tc_action_ops *ops; |
e9ce1cd3 DM |
77 | __u32 type; /* for backward compat(TCA_OLD_COMPAT) */ |
78 | __u32 order; | |
33be6271 | 79 | struct list_head list; |
1da177e4 LT |
80 | }; |
81 | ||
82 | #define TCA_CAP_NONE 0 | |
e9ce1cd3 | 83 | struct tc_action_ops { |
1da177e4 | 84 | struct tc_action_ops *next; |
e9ce1cd3 | 85 | struct tcf_hashinfo *hinfo; |
1da177e4 LT |
86 | char kind[IFNAMSIZ]; |
87 | __u32 type; /* TBD to match kind */ | |
88 | __u32 capab; /* capabilities includes 4 bit version */ | |
89 | struct module *owner; | |
dc7f9f6e | 90 | int (*act)(struct sk_buff *, const struct tc_action *, struct tcf_result *); |
e9ce1cd3 | 91 | int (*dump)(struct sk_buff *, struct tc_action *, int, int); |
1da177e4 | 92 | int (*cleanup)(struct tc_action *, int bind); |
e9ce1cd3 | 93 | int (*lookup)(struct tc_action *, u32); |
c1b52739 BL |
94 | int (*init)(struct net *net, struct nlattr *nla, |
95 | struct nlattr *est, struct tc_action *act, int ovr, | |
96 | int bind); | |
e9ce1cd3 | 97 | int (*walk)(struct sk_buff *, struct netlink_callback *, int, struct tc_action *); |
1da177e4 LT |
98 | }; |
99 | ||
5c15257f JP |
100 | struct tcf_common *tcf_hash_lookup(u32 index, struct tcf_hashinfo *hinfo); |
101 | void tcf_hash_destroy(struct tcf_common *p, struct tcf_hashinfo *hinfo); | |
102 | int tcf_hash_release(struct tcf_common *p, int bind, | |
103 | struct tcf_hashinfo *hinfo); | |
104 | int tcf_generic_walker(struct sk_buff *skb, struct netlink_callback *cb, | |
105 | int type, struct tc_action *a); | |
106 | u32 tcf_hash_new_index(u32 *idx_gen, struct tcf_hashinfo *hinfo); | |
107 | int tcf_hash_search(struct tc_action *a, u32 index); | |
108 | struct tcf_common *tcf_hash_check(u32 index, struct tc_action *a, | |
109 | int bind, struct tcf_hashinfo *hinfo); | |
110 | struct tcf_common *tcf_hash_create(u32 index, struct nlattr *est, | |
111 | struct tc_action *a, int size, | |
112 | int bind, u32 *idx_gen, | |
113 | struct tcf_hashinfo *hinfo); | |
114 | void tcf_hash_insert(struct tcf_common *p, struct tcf_hashinfo *hinfo); | |
e9ce1cd3 | 115 | |
5c15257f JP |
116 | int tcf_register_action(struct tc_action_ops *a); |
117 | int tcf_unregister_action(struct tc_action_ops *a); | |
33be6271 WC |
118 | void tcf_action_destroy(struct list_head *actions, int bind); |
119 | int tcf_action_exec(struct sk_buff *skb, const struct list_head *actions, | |
5c15257f | 120 | struct tcf_result *res); |
33be6271 | 121 | int tcf_action_init(struct net *net, struct nlattr *nla, |
5c15257f | 122 | struct nlattr *est, char *n, int ovr, |
33be6271 | 123 | int bind, struct list_head *); |
5c15257f JP |
124 | struct tc_action *tcf_action_init_1(struct net *net, struct nlattr *nla, |
125 | struct nlattr *est, char *n, int ovr, | |
126 | int bind); | |
33be6271 | 127 | int tcf_action_dump(struct sk_buff *skb, struct list_head *, int, int); |
5c15257f JP |
128 | int tcf_action_dump_old(struct sk_buff *skb, struct tc_action *a, int, int); |
129 | int tcf_action_dump_1(struct sk_buff *skb, struct tc_action *a, int, int); | |
130 | int tcf_action_copy_stats(struct sk_buff *, struct tc_action *, int); | |
1da177e4 | 131 | #endif /* CONFIG_NET_CLS_ACT */ |
1da177e4 | 132 | #endif |