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/include/net/act_api.h

https://bitbucket.org/thekraven/iscream_thunderc-2.6.35
C++ Header | 124 lines | 108 code | 13 blank | 3 comment | 0 complexity | 59a6147462818ebfe1de2afa741c8b46 MD5 | raw file
Possible License(s): GPL-2.0, LGPL-2.0, AGPL-1.0
  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
 11struct 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};
 24#define tcf_next	common.tcfc_next
 25#define tcf_index	common.tcfc_index
 26#define tcf_refcnt	common.tcfc_refcnt
 27#define tcf_bindcnt	common.tcfc_bindcnt
 28#define tcf_capab	common.tcfc_capab
 29#define tcf_action	common.tcfc_action
 30#define tcf_tm		common.tcfc_tm
 31#define tcf_bstats	common.tcfc_bstats
 32#define tcf_qstats	common.tcfc_qstats
 33#define tcf_rate_est	common.tcfc_rate_est
 34#define tcf_lock	common.tcfc_lock
 35
 36struct tcf_police {
 37	struct tcf_common	common;
 38	int			tcfp_result;
 39	u32			tcfp_ewma_rate;
 40	u32			tcfp_burst;
 41	u32			tcfp_mtu;
 42	u32			tcfp_toks;
 43	u32			tcfp_ptoks;
 44	psched_time_t		tcfp_t_c;
 45	struct qdisc_rate_table	*tcfp_R_tab;
 46	struct qdisc_rate_table	*tcfp_P_tab;
 47};
 48#define to_police(pc)	\
 49	container_of(pc, struct tcf_police, common)
 50
 51struct tcf_hashinfo {
 52	struct tcf_common	**htab;
 53	unsigned int		hmask;
 54	rwlock_t		*lock;
 55};
 56
 57static inline unsigned int tcf_hash(u32 index, unsigned int hmask)
 58{
 59	return index & hmask;
 60}
 61
 62#ifdef CONFIG_NET_CLS_ACT
 63
 64#define ACT_P_CREATED 1
 65#define ACT_P_DELETED 1
 66
 67struct tcf_act_hdr {
 68	struct tcf_common	common;
 69};
 70
 71struct tc_action {
 72	void			*priv;
 73	struct tc_action_ops	*ops;
 74	__u32			type; /* for backward compat(TCA_OLD_COMPAT) */
 75	__u32			order;
 76	struct tc_action	*next;
 77};
 78
 79#define TCA_CAP_NONE 0
 80struct tc_action_ops {
 81	struct tc_action_ops *next;
 82	struct tcf_hashinfo *hinfo;
 83	char    kind[IFNAMSIZ];
 84	__u32   type; /* TBD to match kind */
 85	__u32 	capab;  /* capabilities includes 4 bit version */
 86	struct module		*owner;
 87	int     (*act)(struct sk_buff *, struct tc_action *, struct tcf_result *);
 88	int     (*get_stats)(struct sk_buff *, struct tc_action *);
 89	int     (*dump)(struct sk_buff *, struct tc_action *, int, int);
 90	int     (*cleanup)(struct tc_action *, int bind);
 91	int     (*lookup)(struct tc_action *, u32);
 92	int     (*init)(struct nlattr *, struct nlattr *, struct tc_action *, int , int);
 93	int     (*walk)(struct sk_buff *, struct netlink_callback *, int, struct tc_action *);
 94};
 95
 96extern struct tcf_common *tcf_hash_lookup(u32 index,
 97					  struct tcf_hashinfo *hinfo);
 98extern void tcf_hash_destroy(struct tcf_common *p, struct tcf_hashinfo *hinfo);
 99extern int tcf_hash_release(struct tcf_common *p, int bind,
100			    struct tcf_hashinfo *hinfo);
101extern int tcf_generic_walker(struct sk_buff *skb, struct netlink_callback *cb,
102			      int type, struct tc_action *a);
103extern u32 tcf_hash_new_index(u32 *idx_gen, struct tcf_hashinfo *hinfo);
104extern int tcf_hash_search(struct tc_action *a, u32 index);
105extern struct tcf_common *tcf_hash_check(u32 index, struct tc_action *a,
106					 int bind, struct tcf_hashinfo *hinfo);
107extern struct tcf_common *tcf_hash_create(u32 index, struct nlattr *est,
108					  struct tc_action *a, int size,
109					  int bind, u32 *idx_gen,
110					  struct tcf_hashinfo *hinfo);
111extern void tcf_hash_insert(struct tcf_common *p, struct tcf_hashinfo *hinfo);
112
113extern int tcf_register_action(struct tc_action_ops *a);
114extern int tcf_unregister_action(struct tc_action_ops *a);
115extern void tcf_action_destroy(struct tc_action *a, int bind);
116extern int tcf_action_exec(struct sk_buff *skb, struct tc_action *a, struct tcf_result *res);
117extern struct tc_action *tcf_action_init(struct nlattr *nla, struct nlattr *est, char *n, int ovr, int bind);
118extern struct tc_action *tcf_action_init_1(struct nlattr *nla, struct nlattr *est, char *n, int ovr, int bind);
119extern int tcf_action_dump(struct sk_buff *skb, struct tc_action *a, int, int);
120extern int tcf_action_dump_old(struct sk_buff *skb, struct tc_action *a, int, int);
121extern int tcf_action_dump_1(struct sk_buff *skb, struct tc_action *a, int, int);
122extern int tcf_action_copy_stats (struct sk_buff *,struct tc_action *, int);
123#endif /* CONFIG_NET_CLS_ACT */
124#endif