neighbour.h

一个基于linux的TCP/IP协议栈的实现

/* neighbout.h
 * [e-mail]
 * 2006-09-26
 */

#ifndef INCLUDED_NEIGHBOUR_H
#define INCLUDED_NEIGHBOUR_H

#include "log.h"

#include <net/neighbour.h>

void myneigh_table_init( struct neigh_table *tbl );
void myneigh_table_destroy( struct neigh_table *tbl );
void myneigh_destroy( struct neighbour *neigh );
void myneigh_parms_destroy( struct neigh_parms *parms );
int __myneigh_event_send( struct neighbour *neigh, struct sk_buff *skb );
int myneigh_connected_output(struct sk_buff *skb);
int myneigh_compat_output( struct sk_buff *skb );
int myneigh_resolve_output( struct sk_buff *skb );
struct neighbour *myneigh_lookup( struct neigh_table *tbl, const void *pkey,
				struct net_device *dev );
struct neighbour *myneigh_create( struct neigh_table *tbl, const void *pkey,
				struct net_device *dev );
struct neigh_parms *myneigh_parms_alloc(struct net_device *dev,
				struct neigh_table *tbl);
void myneigh_parms_release( struct neigh_table *tbl, struct neigh_parms *parms );
int myneigh_ifdown( struct neigh_table *tbl, struct net_device *dev );
int myneigh_add(struct sk_buff *skb, struct nlmsghdr *nlh, void *arg);
int myneigh_delete(struct sk_buff *skb, struct nlmsghdr *nlh, void *arg);
int myneigh_dump_info(struct sk_buff *skb, struct netlink_callback *cb);
int myneightbl_dump_info(struct sk_buff *skb, struct netlink_callback *cb);
int myneightbl_set(struct sk_buff *skb, struct nlmsghdr *nlh, void *arg);
int myneigh_update(struct neighbour *neigh, const u8 *lladdr, u8 new, u32 flags);
struct neighbour *myneigh_event_ns( struct neigh_table *tbl,
				u8 *lladdr, void *saddr, struct net_device *dev );
int mypneigh_delete(struct neigh_table *tbl, const void *pkey,
				struct net_device *dev);
struct pneigh_entry * mypneigh_lookup(struct neigh_table *tbl, const void *pkey,
				struct net_device *dev, int creat);
void *myneigh_seq_start(struct seq_file *seq, loff_t *pos,
				struct neigh_table *tbl, unsigned int neigh_seq_flags);
void *myneigh_seq_next(struct seq_file *seq, void *v, loff_t *pos);
void myneigh_seq_stop(struct seq_file *seq, void *v);

static inline void myneigh_release(struct neighbour *neigh)
{
    if( atomic_dec_and_test(&neigh->refcnt) )
        myneigh_destroy( neigh );
}

static inline void myneigh_parms_put(struct neigh_parms *parms)
{
	if (atomic_dec_and_test(&parms->refcnt))
		myneigh_parms_destroy(parms);
}

static inline int myneigh_event_send(struct neighbour *neigh, struct sk_buff *skb)
{
	neigh->used = jiffies;
	if( !(neigh->nud_state & (NUD_CONNECTED | NUD_DELAY | NUD_PROBE)) )
		return __myneigh_event_send( neigh, skb );
	return 0;
}

static inline struct neighbour *
__myneigh_lookup(struct neigh_table *tbl, const void *pkey, struct net_device *dev, int creat)
{
	struct neighbour *n = myneigh_lookup(tbl, pkey, dev);

	if( n || !creat )
		return n;

	n = myneigh_create( tbl, pkey, dev );
	return IS_ERR(n) ? NULL : n;
}

static inline struct neighbour * __myneigh_lookup_errno( struct neigh_table *tbl, 
				const void *pkey, struct net_device *dev )
{
	struct neighbour *n = myneigh_lookup(tbl, pkey, dev);
	if( n )
		return n;
	return myneigh_create( tbl, pkey, dev );
}

static inline struct neigh_parms *myneigh_parms_clone(struct neigh_parms *parms)
{
	atomic_inc(&parms->refcnt);
	return parms;
}

void __init myarp_init(void);
void __exit myarp_exit(void);

#endif //INCLUDED_NEIGHBOUR_H