f43c5a0df3
tcf_action_exec only gets a single skb pointer and doesn't own the skb, but passes double skb pointers (to a local variable) to the action functions. Change to use single skb pointers everywhere. Signed-off-by: Patrick McHardy <kaber@trash.net> Signed-off-by: David S. Miller <davem@davemloft.net>
117 lines
3.2 KiB
C
117 lines
3.2 KiB
C
#ifndef __NET_ACT_API_H
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#define __NET_ACT_API_H
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/*
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* Public police action API for classifiers/qdiscs
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*/
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#include <net/sch_generic.h>
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#include <net/pkt_sched.h>
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#define tca_gen(name) \
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struct tcf_##name *next; \
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u32 index; \
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int refcnt; \
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int bindcnt; \
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u32 capab; \
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int action; \
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struct tcf_t tm; \
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struct gnet_stats_basic bstats; \
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struct gnet_stats_queue qstats; \
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struct gnet_stats_rate_est rate_est; \
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spinlock_t *stats_lock; \
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spinlock_t lock
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struct tcf_police
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{
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tca_gen(police);
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int result;
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u32 ewma_rate;
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u32 burst;
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u32 mtu;
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u32 toks;
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u32 ptoks;
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psched_time_t t_c;
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struct qdisc_rate_table *R_tab;
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struct qdisc_rate_table *P_tab;
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};
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#ifdef CONFIG_NET_CLS_ACT
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#define ACT_P_CREATED 1
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#define ACT_P_DELETED 1
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struct tcf_act_hdr
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{
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tca_gen(act_hdr);
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};
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struct tc_action
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{
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void *priv;
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struct tc_action_ops *ops;
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__u32 type; /* for backward compat(TCA_OLD_COMPAT) */
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__u32 order;
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struct tc_action *next;
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};
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#define TCA_CAP_NONE 0
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struct tc_action_ops
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{
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struct tc_action_ops *next;
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char kind[IFNAMSIZ];
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__u32 type; /* TBD to match kind */
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__u32 capab; /* capabilities includes 4 bit version */
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struct module *owner;
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int (*act)(struct sk_buff *, struct tc_action *, struct tcf_result *);
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int (*get_stats)(struct sk_buff *, struct tc_action *);
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int (*dump)(struct sk_buff *, struct tc_action *,int , int);
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int (*cleanup)(struct tc_action *, int bind);
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int (*lookup)(struct tc_action *, u32 );
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int (*init)(struct rtattr *,struct rtattr *,struct tc_action *, int , int );
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int (*walk)(struct sk_buff *, struct netlink_callback *, int , struct tc_action *);
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};
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extern int tcf_register_action(struct tc_action_ops *a);
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extern int tcf_unregister_action(struct tc_action_ops *a);
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extern void tcf_action_destroy(struct tc_action *a, int bind);
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extern int tcf_action_exec(struct sk_buff *skb, struct tc_action *a, struct tcf_result *res);
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extern struct tc_action *tcf_action_init(struct rtattr *rta, struct rtattr *est, char *n, int ovr, int bind, int *err);
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extern struct tc_action *tcf_action_init_1(struct rtattr *rta, struct rtattr *est, char *n, int ovr, int bind, int *err);
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extern int tcf_action_dump(struct sk_buff *skb, struct tc_action *a, int, int);
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extern int tcf_action_dump_old(struct sk_buff *skb, struct tc_action *a, int, int);
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extern int tcf_action_dump_1(struct sk_buff *skb, struct tc_action *a, int, int);
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extern int tcf_action_copy_stats (struct sk_buff *,struct tc_action *, int);
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#endif /* CONFIG_NET_CLS_ACT */
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extern int tcf_police(struct sk_buff *skb, struct tcf_police *p);
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extern void tcf_police_destroy(struct tcf_police *p);
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extern struct tcf_police * tcf_police_locate(struct rtattr *rta, struct rtattr *est);
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extern int tcf_police_dump(struct sk_buff *skb, struct tcf_police *p);
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extern int tcf_police_dump_stats(struct sk_buff *skb, struct tcf_police *p);
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static inline int
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tcf_police_release(struct tcf_police *p, int bind)
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{
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int ret = 0;
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#ifdef CONFIG_NET_CLS_ACT
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if (p) {
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if (bind) {
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p->bindcnt--;
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}
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p->refcnt--;
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if (p->refcnt <= 0 && !p->bindcnt) {
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tcf_police_destroy(p);
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ret = 1;
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}
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}
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#else
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if (p && --p->refcnt == 0)
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tcf_police_destroy(p);
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#endif /* CONFIG_NET_CLS_ACT */
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return ret;
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}
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#endif
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