]>
Commit | Line | Data |
---|---|---|
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 | 11 | struct tcf_common { |
89819dc0 | 12 | struct hlist_node tcfc_head; |
e9ce1cd3 DM |
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; |
519c818e ED |
24 | struct gnet_stats_basic_cpu __percpu *cpu_bstats; |
25 | struct gnet_stats_queue __percpu *cpu_qstats; | |
e9ce1cd3 | 26 | }; |
89819dc0 | 27 | #define tcf_head common.tcfc_head |
e9ce1cd3 DM |
28 | #define tcf_index common.tcfc_index |
29 | #define tcf_refcnt common.tcfc_refcnt | |
30 | #define tcf_bindcnt common.tcfc_bindcnt | |
31 | #define tcf_capab common.tcfc_capab | |
32 | #define tcf_action common.tcfc_action | |
33 | #define tcf_tm common.tcfc_tm | |
34 | #define tcf_bstats common.tcfc_bstats | |
35 | #define tcf_qstats common.tcfc_qstats | |
36 | #define tcf_rate_est common.tcfc_rate_est | |
e9ce1cd3 | 37 | #define tcf_lock common.tcfc_lock |
c7de2cf0 | 38 | #define tcf_rcu common.tcfc_rcu |
e9ce1cd3 | 39 | |
e9ce1cd3 | 40 | struct tcf_hashinfo { |
89819dc0 | 41 | struct hlist_head *htab; |
e9ce1cd3 | 42 | unsigned int hmask; |
89819dc0 | 43 | spinlock_t lock; |
ddafd34f | 44 | u32 index; |
e9ce1cd3 DM |
45 | }; |
46 | ||
47 | static inline unsigned int tcf_hash(u32 index, unsigned int hmask) | |
48 | { | |
49 | return index & hmask; | |
50 | } | |
1da177e4 | 51 | |
369ba567 WC |
52 | static inline int tcf_hashinfo_init(struct tcf_hashinfo *hf, unsigned int mask) |
53 | { | |
89819dc0 WC |
54 | int i; |
55 | ||
56 | spin_lock_init(&hf->lock); | |
ddafd34f | 57 | hf->index = 0; |
369ba567 | 58 | hf->hmask = mask; |
89819dc0 | 59 | hf->htab = kzalloc((mask + 1) * sizeof(struct hlist_head), |
369ba567 WC |
60 | GFP_KERNEL); |
61 | if (!hf->htab) | |
62 | return -ENOMEM; | |
89819dc0 WC |
63 | for (i = 0; i < mask + 1; i++) |
64 | INIT_HLIST_HEAD(&hf->htab[i]); | |
369ba567 WC |
65 | return 0; |
66 | } | |
67 | ||
56e5d1ca ED |
68 | /* Update lastuse only if needed, to avoid dirtying a cache line. |
69 | * We use a temp variable to avoid fetching jiffies twice. | |
70 | */ | |
71 | static inline void tcf_lastuse_update(struct tcf_t *tm) | |
72 | { | |
73 | unsigned long now = jiffies; | |
74 | ||
75 | if (tm->lastuse != now) | |
76 | tm->lastuse = now; | |
77 | } | |
78 | ||
1da177e4 LT |
79 | #ifdef CONFIG_NET_CLS_ACT |
80 | ||
81 | #define ACT_P_CREATED 1 | |
82 | #define ACT_P_DELETED 1 | |
83 | ||
e9ce1cd3 DM |
84 | struct tc_action { |
85 | void *priv; | |
dc7f9f6e | 86 | const struct tc_action_ops *ops; |
e9ce1cd3 DM |
87 | __u32 type; /* for backward compat(TCA_OLD_COMPAT) */ |
88 | __u32 order; | |
33be6271 | 89 | struct list_head list; |
1da177e4 LT |
90 | }; |
91 | ||
e9ce1cd3 | 92 | struct tc_action_ops { |
1f747c26 | 93 | struct list_head head; |
e9ce1cd3 | 94 | struct tcf_hashinfo *hinfo; |
1da177e4 LT |
95 | char kind[IFNAMSIZ]; |
96 | __u32 type; /* TBD to match kind */ | |
1da177e4 | 97 | struct module *owner; |
dc7f9f6e | 98 | int (*act)(struct sk_buff *, const struct tc_action *, struct tcf_result *); |
e9ce1cd3 | 99 | int (*dump)(struct sk_buff *, struct tc_action *, int, int); |
a5b5c958 | 100 | void (*cleanup)(struct tc_action *, int bind); |
e9ce1cd3 | 101 | int (*lookup)(struct tc_action *, u32); |
c1b52739 BL |
102 | int (*init)(struct net *net, struct nlattr *nla, |
103 | struct nlattr *est, struct tc_action *act, int ovr, | |
104 | int bind); | |
e9ce1cd3 | 105 | int (*walk)(struct sk_buff *, struct netlink_callback *, int, struct tc_action *); |
1da177e4 LT |
106 | }; |
107 | ||
6e6a50c2 | 108 | int tcf_hash_search(struct tc_action *a, u32 index); |
ddafd34f | 109 | u32 tcf_hash_new_index(struct tcf_hashinfo *hinfo); |
86062033 WC |
110 | int tcf_hash_check(u32 index, struct tc_action *a, int bind); |
111 | int tcf_hash_create(u32 index, struct nlattr *est, struct tc_action *a, | |
519c818e | 112 | int size, int bind, bool cpustats); |
86062033 WC |
113 | void tcf_hash_cleanup(struct tc_action *a, struct nlattr *est); |
114 | void tcf_hash_insert(struct tc_action *a); | |
e9ce1cd3 | 115 | |
28e6b67f DB |
116 | int __tcf_hash_release(struct tc_action *a, bool bind, bool strict); |
117 | ||
118 | static inline int tcf_hash_release(struct tc_action *a, bool bind) | |
119 | { | |
120 | return __tcf_hash_release(a, bind, false); | |
121 | } | |
122 | ||
4f1e9d89 | 123 | int tcf_register_action(struct tc_action_ops *a, unsigned int mask); |
5c15257f | 124 | int tcf_unregister_action(struct tc_action_ops *a); |
55334a5d | 125 | int tcf_action_destroy(struct list_head *actions, int bind); |
33be6271 | 126 | int tcf_action_exec(struct sk_buff *skb, const struct list_head *actions, |
5c15257f | 127 | struct tcf_result *res); |
33be6271 | 128 | int tcf_action_init(struct net *net, struct nlattr *nla, |
5c15257f | 129 | struct nlattr *est, char *n, int ovr, |
33be6271 | 130 | int bind, struct list_head *); |
5c15257f JP |
131 | struct tc_action *tcf_action_init_1(struct net *net, struct nlattr *nla, |
132 | struct nlattr *est, char *n, int ovr, | |
133 | int bind); | |
33be6271 | 134 | int tcf_action_dump(struct sk_buff *skb, struct list_head *, int, int); |
5c15257f JP |
135 | int tcf_action_dump_old(struct sk_buff *skb, struct tc_action *a, int, int); |
136 | int tcf_action_dump_1(struct sk_buff *skb, struct tc_action *a, int, int); | |
137 | int tcf_action_copy_stats(struct sk_buff *, struct tc_action *, int); | |
1da177e4 | 138 | #endif /* CONFIG_NET_CLS_ACT */ |
1da177e4 | 139 | #endif |