e9ce1cd3cf
This was simply making templates of functions and mostly causing a lot of code duplication in the classifier action modules. We solve this more cleanly by having a common "struct tcf_common" that hash worker functions contained once in act_api.c can work with. Callers work with real action objects that have the common struct plus their module specific struct members. You go from a common object to the higher level one using a "to_foo()" macro which makes use of container_of() to do the dirty work. This also kills off act_generic.h which was only used by act_simple.c and keeping it around was more work than the it's value. Signed-off-by: David S. Miller <davem@davemloft.net>
157 lines
4.9 KiB
C
157 lines
4.9 KiB
C
#ifndef __NET_ACT_API_H
|
|
#define __NET_ACT_API_H
|
|
|
|
/*
|
|
* Public police action API for classifiers/qdiscs
|
|
*/
|
|
|
|
#include <net/sch_generic.h>
|
|
#include <net/pkt_sched.h>
|
|
|
|
struct tcf_common {
|
|
struct tcf_common *tcfc_next;
|
|
u32 tcfc_index;
|
|
int tcfc_refcnt;
|
|
int tcfc_bindcnt;
|
|
u32 tcfc_capab;
|
|
int tcfc_action;
|
|
struct tcf_t tcfc_tm;
|
|
struct gnet_stats_basic tcfc_bstats;
|
|
struct gnet_stats_queue tcfc_qstats;
|
|
struct gnet_stats_rate_est tcfc_rate_est;
|
|
spinlock_t *tcfc_stats_lock;
|
|
spinlock_t tcfc_lock;
|
|
};
|
|
#define tcf_next common.tcfc_next
|
|
#define tcf_index common.tcfc_index
|
|
#define tcf_refcnt common.tcfc_refcnt
|
|
#define tcf_bindcnt common.tcfc_bindcnt
|
|
#define tcf_capab common.tcfc_capab
|
|
#define tcf_action common.tcfc_action
|
|
#define tcf_tm common.tcfc_tm
|
|
#define tcf_bstats common.tcfc_bstats
|
|
#define tcf_qstats common.tcfc_qstats
|
|
#define tcf_rate_est common.tcfc_rate_est
|
|
#define tcf_stats_lock common.tcfc_stats_lock
|
|
#define tcf_lock common.tcfc_lock
|
|
|
|
struct tcf_police {
|
|
struct tcf_common common;
|
|
int tcfp_result;
|
|
u32 tcfp_ewma_rate;
|
|
u32 tcfp_burst;
|
|
u32 tcfp_mtu;
|
|
u32 tcfp_toks;
|
|
u32 tcfp_ptoks;
|
|
psched_time_t tcfp_t_c;
|
|
struct qdisc_rate_table *tcfp_R_tab;
|
|
struct qdisc_rate_table *tcfp_P_tab;
|
|
};
|
|
#define to_police(pc) \
|
|
container_of(pc, struct tcf_police, common)
|
|
|
|
struct tcf_hashinfo {
|
|
struct tcf_common **htab;
|
|
unsigned int hmask;
|
|
rwlock_t *lock;
|
|
};
|
|
|
|
static inline unsigned int tcf_hash(u32 index, unsigned int hmask)
|
|
{
|
|
return index & hmask;
|
|
}
|
|
|
|
#ifdef CONFIG_NET_CLS_ACT
|
|
|
|
#define ACT_P_CREATED 1
|
|
#define ACT_P_DELETED 1
|
|
|
|
struct tcf_act_hdr {
|
|
struct tcf_common common;
|
|
};
|
|
|
|
struct tc_action {
|
|
void *priv;
|
|
struct tc_action_ops *ops;
|
|
__u32 type; /* for backward compat(TCA_OLD_COMPAT) */
|
|
__u32 order;
|
|
struct tc_action *next;
|
|
};
|
|
|
|
#define TCA_CAP_NONE 0
|
|
struct tc_action_ops {
|
|
struct tc_action_ops *next;
|
|
struct tcf_hashinfo *hinfo;
|
|
char kind[IFNAMSIZ];
|
|
__u32 type; /* TBD to match kind */
|
|
__u32 capab; /* capabilities includes 4 bit version */
|
|
struct module *owner;
|
|
int (*act)(struct sk_buff *, struct tc_action *, struct tcf_result *);
|
|
int (*get_stats)(struct sk_buff *, struct tc_action *);
|
|
int (*dump)(struct sk_buff *, struct tc_action *, int, int);
|
|
int (*cleanup)(struct tc_action *, int bind);
|
|
int (*lookup)(struct tc_action *, u32);
|
|
int (*init)(struct rtattr *, struct rtattr *, struct tc_action *, int , int);
|
|
int (*walk)(struct sk_buff *, struct netlink_callback *, int, struct tc_action *);
|
|
};
|
|
|
|
extern struct tcf_common *tcf_hash_lookup(u32 index,
|
|
struct tcf_hashinfo *hinfo);
|
|
extern void tcf_hash_destroy(struct tcf_common *p, struct tcf_hashinfo *hinfo);
|
|
extern int tcf_hash_release(struct tcf_common *p, int bind,
|
|
struct tcf_hashinfo *hinfo);
|
|
extern int tcf_generic_walker(struct sk_buff *skb, struct netlink_callback *cb,
|
|
int type, struct tc_action *a);
|
|
extern u32 tcf_hash_new_index(u32 *idx_gen, struct tcf_hashinfo *hinfo);
|
|
extern int tcf_hash_search(struct tc_action *a, u32 index);
|
|
extern struct tcf_common *tcf_hash_check(u32 index, struct tc_action *a,
|
|
int bind, struct tcf_hashinfo *hinfo);
|
|
extern struct tcf_common *tcf_hash_create(u32 index, struct rtattr *est,
|
|
struct tc_action *a, int size,
|
|
int bind, u32 *idx_gen,
|
|
struct tcf_hashinfo *hinfo);
|
|
extern void tcf_hash_insert(struct tcf_common *p, struct tcf_hashinfo *hinfo);
|
|
|
|
extern int tcf_register_action(struct tc_action_ops *a);
|
|
extern int tcf_unregister_action(struct tc_action_ops *a);
|
|
extern void tcf_action_destroy(struct tc_action *a, int bind);
|
|
extern int tcf_action_exec(struct sk_buff *skb, struct tc_action *a, struct tcf_result *res);
|
|
extern struct tc_action *tcf_action_init(struct rtattr *rta, struct rtattr *est, char *n, int ovr, int bind, int *err);
|
|
extern struct tc_action *tcf_action_init_1(struct rtattr *rta, struct rtattr *est, char *n, int ovr, int bind, int *err);
|
|
extern int tcf_action_dump(struct sk_buff *skb, struct tc_action *a, int, int);
|
|
extern int tcf_action_dump_old(struct sk_buff *skb, struct tc_action *a, int, int);
|
|
extern int tcf_action_dump_1(struct sk_buff *skb, struct tc_action *a, int, int);
|
|
extern int tcf_action_copy_stats (struct sk_buff *,struct tc_action *, int);
|
|
#endif /* CONFIG_NET_CLS_ACT */
|
|
|
|
extern int tcf_police(struct sk_buff *skb, struct tcf_police *p);
|
|
extern void tcf_police_destroy(struct tcf_police *p);
|
|
extern struct tcf_police * tcf_police_locate(struct rtattr *rta, struct rtattr *est);
|
|
extern int tcf_police_dump(struct sk_buff *skb, struct tcf_police *p);
|
|
extern int tcf_police_dump_stats(struct sk_buff *skb, struct tcf_police *p);
|
|
|
|
static inline int
|
|
tcf_police_release(struct tcf_police *p, int bind)
|
|
{
|
|
int ret = 0;
|
|
#ifdef CONFIG_NET_CLS_ACT
|
|
if (p) {
|
|
if (bind)
|
|
p->tcf_bindcnt--;
|
|
|
|
p->tcf_refcnt--;
|
|
if (p->tcf_refcnt <= 0 && !p->tcf_bindcnt) {
|
|
tcf_police_destroy(p);
|
|
ret = 1;
|
|
}
|
|
}
|
|
#else
|
|
if (p && --p->tcf_refcnt == 0)
|
|
tcf_police_destroy(p);
|
|
|
|
#endif /* CONFIG_NET_CLS_ACT */
|
|
return ret;
|
|
}
|
|
|
|
#endif
|