| Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 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 | #define tca_gen(name) \ |
| 12 | struct tcf_##name *next; \ |
| 13 | u32 index; \ |
| 14 | int refcnt; \ |
| 15 | int bindcnt; \ |
| 16 | u32 capab; \ |
| 17 | int action; \ |
| 18 | struct tcf_t tm; \ |
| 19 | struct gnet_stats_basic bstats; \ |
| 20 | struct gnet_stats_queue qstats; \ |
| 21 | struct gnet_stats_rate_est rate_est; \ |
| 22 | spinlock_t *stats_lock; \ |
| 23 | spinlock_t lock |
| 24 | |
| 25 | struct tcf_police |
| 26 | { |
| 27 | tca_gen(police); |
| 28 | int result; |
| 29 | u32 ewma_rate; |
| 30 | u32 burst; |
| 31 | u32 mtu; |
| 32 | u32 toks; |
| 33 | u32 ptoks; |
| 34 | psched_time_t t_c; |
| 35 | struct qdisc_rate_table *R_tab; |
| 36 | struct qdisc_rate_table *P_tab; |
| 37 | }; |
| 38 | |
| 39 | #ifdef CONFIG_NET_CLS_ACT |
| 40 | |
| 41 | #define ACT_P_CREATED 1 |
| 42 | #define ACT_P_DELETED 1 |
| 43 | |
| 44 | struct tcf_act_hdr |
| 45 | { |
| 46 | tca_gen(act_hdr); |
| 47 | }; |
| 48 | |
| 49 | struct tc_action |
| 50 | { |
| 51 | void *priv; |
| 52 | struct tc_action_ops *ops; |
| 53 | __u32 type; /* for backward compat(TCA_OLD_COMPAT) */ |
| 54 | __u32 order; |
| 55 | struct tc_action *next; |
| 56 | }; |
| 57 | |
| 58 | #define TCA_CAP_NONE 0 |
| 59 | struct tc_action_ops |
| 60 | { |
| 61 | struct tc_action_ops *next; |
| 62 | char kind[IFNAMSIZ]; |
| 63 | __u32 type; /* TBD to match kind */ |
| 64 | __u32 capab; /* capabilities includes 4 bit version */ |
| 65 | struct module *owner; |
| 66 | int (*act)(struct sk_buff **, struct tc_action *); |
| 67 | int (*get_stats)(struct sk_buff *, struct tc_action *); |
| 68 | int (*dump)(struct sk_buff *, struct tc_action *,int , int); |
| 69 | int (*cleanup)(struct tc_action *, int bind); |
| 70 | int (*lookup)(struct tc_action *, u32 ); |
| 71 | int (*init)(struct rtattr *,struct rtattr *,struct tc_action *, int , int ); |
| 72 | int (*walk)(struct sk_buff *, struct netlink_callback *, int , struct tc_action *); |
| 73 | }; |
| 74 | |
| 75 | extern int tcf_register_action(struct tc_action_ops *a); |
| 76 | extern int tcf_unregister_action(struct tc_action_ops *a); |
| 77 | extern void tcf_action_destroy(struct tc_action *a, int bind); |
| 78 | extern int tcf_action_exec(struct sk_buff *skb, struct tc_action *a, struct tcf_result *res); |
| 79 | extern struct tc_action *tcf_action_init(struct rtattr *rta, struct rtattr *est, char *n, int ovr, int bind, int *err); |
| 80 | extern struct tc_action *tcf_action_init_1(struct rtattr *rta, struct rtattr *est, char *n, int ovr, int bind, int *err); |
| 81 | extern int tcf_action_dump(struct sk_buff *skb, struct tc_action *a, int, int); |
| 82 | extern int tcf_action_dump_old(struct sk_buff *skb, struct tc_action *a, int, int); |
| 83 | extern int tcf_action_dump_1(struct sk_buff *skb, struct tc_action *a, int, int); |
| 84 | extern int tcf_action_copy_stats (struct sk_buff *,struct tc_action *, int); |
| 85 | #endif /* CONFIG_NET_CLS_ACT */ |
| 86 | |
| 87 | extern int tcf_police(struct sk_buff *skb, struct tcf_police *p); |
| 88 | extern void tcf_police_destroy(struct tcf_police *p); |
| 89 | extern struct tcf_police * tcf_police_locate(struct rtattr *rta, struct rtattr *est); |
| 90 | extern int tcf_police_dump(struct sk_buff *skb, struct tcf_police *p); |
| 91 | extern int tcf_police_dump_stats(struct sk_buff *skb, struct tcf_police *p); |
| 92 | |
| 93 | static inline int |
| 94 | tcf_police_release(struct tcf_police *p, int bind) |
| 95 | { |
| 96 | int ret = 0; |
| 97 | #ifdef CONFIG_NET_CLS_ACT |
| 98 | if (p) { |
| 99 | if (bind) { |
| 100 | p->bindcnt--; |
| 101 | } |
| 102 | p->refcnt--; |
| 103 | if (p->refcnt <= 0 && !p->bindcnt) { |
| 104 | tcf_police_destroy(p); |
| 105 | ret = 1; |
| 106 | } |
| 107 | } |
| 108 | #else |
| 109 | if (p && --p->refcnt == 0) |
| 110 | tcf_police_destroy(p); |
| 111 | |
| 112 | #endif /* CONFIG_NET_CLS_ACT */ |
| 113 | return ret; |
| 114 | } |
| 115 | |
| 116 | #endif |