NAME

if_nametoindex — map a network interface name to its corresponding index

SYNOPSIS

#include <net/if.h>

unsigned if_nametoindex(const char *ifname);

DESCRIPTION

The if_nametoindex () function shall return the interface index corresponding to name ifname.

RETURN VALUE

The corresponding index if ifname is the name of an interface; otherwise, zero.

ERRORS

No errors are defined.

The following sections are informative.

EXAMPLES

None.

APPLICATION USAGE

None.

RATIONALE

None.

FUTURE DIRECTIONS

None.

SEE ALSO

getsockopt(3), if_freenameindex(3), if_indextoname(3), if_nameindex(3), setsockopt(3)

XBD <net/if.h>

CHANGE HISTORY

First released in Issue 6. Derived from the XNS, Issue 5.2 specification.

End of informative text.