ip_fib.h

一个基于linux的TCP/IP协议栈的实现

/* ip_fib.h
 * [e-mail]
 * 2006-11-07
 */

#ifndef INCLUDED_IP_FIB_H
#define INCLUDED_IP_FIB_H

#include <rtnetlink.h>
#include <net/ip_fib.h>

#define MYFIB_RES_PREFSRC(res)	((res).fi->fib_prefsrc ? : __myfib_res_prefsrc(&res))

extern struct fib_table * myfib_tables[RT_TABLE_MAX+1];

#define myip_fib_local_table (myfib_tables[RT_TABLE_LOCAL])
#define myip_fib_main_table (myfib_tables[RT_TABLE_MAIN])

struct fib_table *__myfib_new_table( int id );
void myfib_rule_put( struct fib_rule *r );
void myfree_fib_info(struct fib_info *fi);
int myfib_lookup(const struct flowi *flp, struct fib_result *res);

static inline struct fib_table *myfib_new_table(int id)
{
	if( id == 0 )
		id = RT_TABLE_MAIN;

	return myfib_tables[id] ? : __myfib_new_table(id);
}

static inline void myfib_info_put(struct fib_info *fi)
{
	if( atomic_dec_and_test(&fi->fib_clntref) )
		myfree_fib_info(fi);
}

static inline void myfib_res_put(struct fib_result *res)
{
	if( res->fi )
		myfib_info_put( res->fi );
	if( res->r )
		myfib_rule_put( res->r );
}

static inline struct fib_table *myfib_get_table(int id)
{
	if (id == 0)
		id = RT_TABLE_MAIN;
	return myfib_tables[id];
}

#endif //INCLUDED_IP_FIB_H