route_dummy.c

来自「一个基于linux的TCP/IP协议栈的实现」· C语言 代码 · 共 32 行

/* route_dummy.c
 * [e-mail]
 * 2006-09-09
 */

#include "route_dummy.h"
#include "arp.h"
#include "log.h"

int ip_route_output_flow_dummy(struct rtable **rp, struct flowi *flp, 
				struct sock *sk, int flags)
{
	PR_DEBUG( "get the output route for dummy! IP: %u.%u.%u.%u\n", 
					NIPQUAD( flp->nl_u.ip4_u.daddr) );

	memset( (*rp), 0, sizeof(struct rtable) );

	(*rp)->rt_gateway = flp->nl_u.ip4_u.daddr;
	if( ((*rp)->u.dst.dev = dev_get_by_name( "mylo" )) == NULL ){
		PR_ERR( "please load the device mylo first!\n");
		return -1;
	}
	if( myarp_bind_neighbour( &(*rp)->u.dst ) < 0 )
		PR_ERR( "arp_bind_neighbour err!\n" );

	dev_put( (*rp)->u.dst.dev );

	return 0;
}

EXPORT_SYMBOL_GPL( ip_route_output_flow_dummy );