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TOMOYO Linux Cross Reference
Linux/include/net/act_api.h

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  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 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;
 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 
 36 struct 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 
 51 struct tcf_hashinfo {
 52         struct tcf_common       **htab;
 53         unsigned int            hmask;
 54         rwlock_t                *lock;
 55 };
 56 
 57 static 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 
 67 struct tcf_act_hdr {
 68         struct tcf_common       common;
 69 };
 70 
 71 struct 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
 80 struct 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 
 96 extern struct tcf_common *tcf_hash_lookup(u32 index,
 97                                           struct tcf_hashinfo *hinfo);
 98 extern void tcf_hash_destroy(struct tcf_common *p, struct tcf_hashinfo *hinfo);
 99 extern int tcf_hash_release(struct tcf_common *p, int bind,
100                             struct tcf_hashinfo *hinfo);
101 extern int tcf_generic_walker(struct sk_buff *skb, struct netlink_callback *cb,
102                               int type, struct tc_action *a);
103 extern u32 tcf_hash_new_index(u32 *idx_gen, struct tcf_hashinfo *hinfo);
104 extern int tcf_hash_search(struct tc_action *a, u32 index);
105 extern struct tcf_common *tcf_hash_check(u32 index, struct tc_action *a,
106                                          int bind, struct tcf_hashinfo *hinfo);
107 extern 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);
111 extern void tcf_hash_insert(struct tcf_common *p, struct tcf_hashinfo *hinfo);
112 
113 extern int tcf_register_action(struct tc_action_ops *a);
114 extern int tcf_unregister_action(struct tc_action_ops *a);
115 extern void tcf_action_destroy(struct tc_action *a, int bind);
116 extern int tcf_action_exec(struct sk_buff *skb, struct tc_action *a, struct tcf_result *res);
117 extern struct tc_action *tcf_action_init(struct nlattr *nla, struct nlattr *est, char *n, int ovr, int bind);
118 extern struct tc_action *tcf_action_init_1(struct nlattr *nla, struct nlattr *est, char *n, int ovr, int bind);
119 extern int tcf_action_dump(struct sk_buff *skb, struct tc_action *a, int, int);
120 extern int tcf_action_dump_old(struct sk_buff *skb, struct tc_action *a, int, int);
121 extern int tcf_action_dump_1(struct sk_buff *skb, struct tc_action *a, int, int);
122 extern int tcf_action_copy_stats (struct sk_buff *,struct tc_action *, int);
123 #endif /* CONFIG_NET_CLS_ACT */
124 #endif
125 

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