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#include "u.h"
#include "../port/lib.h"
#include "mem.h"
#include "dat.h"
#include "fns.h"
#include "../port/error.h"
#include "ip.h"
static void
nullbind(Ipifc*, int, char**)
{
error("cannot bind null device");
}
static void
nullunbind(Ipifc*)
{
}
static void
nullbwrite(Ipifc*, Block *bp, int, uchar*, Routehint*)
{
freeb(bp);
error("nullbwrite");
}
Medium nullmedium =
{
.name= "null",
.bind= nullbind,
.unbind= nullunbind,
.bwrite= nullbwrite,
};
/* used in ipifc to prevent unbind while bind is in progress */
Medium unboundmedium =
{
.name= "unbound",
.bind= nullbind,
.unbind= nullunbind,
.bwrite= nullbwrite,
};
void
nullmediumlink(void)
{
addipmedium(&nullmedium);
}
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