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Linus Torvalds1da177e2005-04-16 15:20:36 -07001#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
David S. Millere9ce1cd2006-08-21 23:54:55 -070011struct 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;
Eric Dumazetc1a8f1f2009-08-16 09:36:49 +000019 struct gnet_stats_basic_packed tcfc_bstats;
David S. Millere9ce1cd2006-08-21 23:54:55 -070020 struct gnet_stats_queue tcfc_qstats;
Eric Dumazet45203a32013-06-06 08:43:22 -070021 struct gnet_stats_rate_est64 tcfc_rate_est;
David S. Millere9ce1cd2006-08-21 23:54:55 -070022 spinlock_t tcfc_lock;
Eric Dumazetc7de2cf2010-06-09 02:09:23 +000023 struct rcu_head tcfc_rcu;
Linus Torvalds1da177e2005-04-16 15:20:36 -070024};
David S. Millere9ce1cd2006-08-21 23:54:55 -070025#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
David S. Millere9ce1cd2006-08-21 23:54:55 -070035#define tcf_lock common.tcfc_lock
Eric Dumazetc7de2cf2010-06-09 02:09:23 +000036#define tcf_rcu common.tcfc_rcu
David S. Millere9ce1cd2006-08-21 23:54:55 -070037
David S. Millere9ce1cd2006-08-21 23:54:55 -070038struct 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}
Linus Torvalds1da177e2005-04-16 15:20:36 -070048
49#ifdef CONFIG_NET_CLS_ACT
50
51#define ACT_P_CREATED 1
52#define ACT_P_DELETED 1
53
David S. Millere9ce1cd2006-08-21 23:54:55 -070054struct tcf_act_hdr {
55 struct tcf_common common;
Linus Torvalds1da177e2005-04-16 15:20:36 -070056};
57
David S. Millere9ce1cd2006-08-21 23:54:55 -070058struct tc_action {
59 void *priv;
Eric Dumazetdc7f9f62011-07-05 23:25:42 +000060 const struct tc_action_ops *ops;
David S. Millere9ce1cd2006-08-21 23:54:55 -070061 __u32 type; /* for backward compat(TCA_OLD_COMPAT) */
62 __u32 order;
63 struct tc_action *next;
Linus Torvalds1da177e2005-04-16 15:20:36 -070064};
65
66#define TCA_CAP_NONE 0
David S. Millere9ce1cd2006-08-21 23:54:55 -070067struct tc_action_ops {
Linus Torvalds1da177e2005-04-16 15:20:36 -070068 struct tc_action_ops *next;
David S. Millere9ce1cd2006-08-21 23:54:55 -070069 struct tcf_hashinfo *hinfo;
Linus Torvalds1da177e2005-04-16 15:20:36 -070070 char kind[IFNAMSIZ];
71 __u32 type; /* TBD to match kind */
72 __u32 capab; /* capabilities includes 4 bit version */
73 struct module *owner;
Eric Dumazetdc7f9f62011-07-05 23:25:42 +000074 int (*act)(struct sk_buff *, const struct tc_action *, struct tcf_result *);
Linus Torvalds1da177e2005-04-16 15:20:36 -070075 int (*get_stats)(struct sk_buff *, struct tc_action *);
David S. Millere9ce1cd2006-08-21 23:54:55 -070076 int (*dump)(struct sk_buff *, struct tc_action *, int, int);
Linus Torvalds1da177e2005-04-16 15:20:36 -070077 int (*cleanup)(struct tc_action *, int bind);
David S. Millere9ce1cd2006-08-21 23:54:55 -070078 int (*lookup)(struct tc_action *, u32);
Benjamin LaHaisec1b52732013-01-14 05:15:39 +000079 int (*init)(struct net *net, struct nlattr *nla,
80 struct nlattr *est, struct tc_action *act, int ovr,
81 int bind);
David S. Millere9ce1cd2006-08-21 23:54:55 -070082 int (*walk)(struct sk_buff *, struct netlink_callback *, int, struct tc_action *);
Linus Torvalds1da177e2005-04-16 15:20:36 -070083};
84
Joe Perches5c152572013-07-30 22:47:13 -070085struct 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);
David S. Millere9ce1cd2006-08-21 23:54:55 -0700100
Joe Perches5c152572013-07-30 22:47:13 -0700101int 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);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700116#endif /* CONFIG_NET_CLS_ACT */
Linus Torvalds1da177e2005-04-16 15:20:36 -0700117#endif