Viewing file:  pkt_cls.h (1.89 KB) -rw-r--r--
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#ifndef __NET_PKT_CLS_H
#define __NET_PKT_CLS_H
#include <linux/pkt_cls.h>
struct rtattr;
struct tcmsg;
/* Basic packet classifier frontend definitions. */
struct tcf_result
{
unsigned long class;
u32 classid;
};
struct tcf_proto
{
/* Fast access part */
struct tcf_proto *next;
void *root;
int (*classify)(struct sk_buff*, struct tcf_proto*, struct tcf_result *);
u32 protocol;
/* All the rest */
u32 prio;
u32 classid;
struct Qdisc *q;
void *data;
struct tcf_proto_ops *ops;
};
struct tcf_walker
{
int stop;
int skip;
int count;
int (*fn)(struct tcf_proto *, unsigned long node, struct tcf_walker *);
};
struct tcf_proto_ops
{
struct tcf_proto_ops *next;
char kind[IFNAMSIZ];
int (*classify)(struct sk_buff*, struct tcf_proto*, struct tcf_result *);
int (*init)(struct tcf_proto*);
void (*destroy)(struct tcf_proto*);
unsigned long (*get)(struct tcf_proto*, u32 handle);
void (*put)(struct tcf_proto*, unsigned long);
int (*change)(struct tcf_proto*, unsigned long, u32 handle, struct rtattr **, unsigned long *);
int (*delete)(struct tcf_proto*, unsigned long);
void (*walk)(struct tcf_proto*, struct tcf_walker *arg);
/* rtnetlink specific */
int (*dump)(struct tcf_proto*, unsigned long, struct sk_buff *skb, struct tcmsg*);
};
/* Main classifier routine: scans classifier chain attached
to this qdisc, (optionally) tests for protocol and asks
specific classifiers.
*/
static inline int tc_classify(struct sk_buff *skb, struct tcf_proto *tp, struct tcf_result *res)
{
int err = 0;
u32 protocol = skb->protocol;
for ( ; tp; tp = tp->next) {
if ((tp->protocol == protocol ||
tp->protocol == __constant_htons(ETH_P_ALL)) &&
(err = tp->classify(skb, tp, res)) >= 0)
return err;
}
return -1;
}
extern int register_tcf_proto_ops(struct tcf_proto_ops *ops);
extern int unregister_tcf_proto_ops(struct tcf_proto_ops *ops);
#endif
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