if_nametoindex(3) Library Functions Manual if_nametoindex(3)
NAME
if_nametoindex - Maps an interface name to an interface index
LIBRARY
Standard C Library (libc.so, libc.a)
SYNOPSIS
#include <net/if.h>
unsigned int if_nametoindex ( const char *ifname) ;
PARAMETERS
Points to a buffer that contains the interface name.
DESCRIPTION
The if_indextoname() function maps an interface name to its corresponding interface index number.
RETURN VALUES
Upon successful conversion, the if_nametoindex() function returns an interface index number. If the interface does not exist, it returns
zero (0).
RELATED INFORMATION
Functions: if_freenameindex(3), if_indextoname(3), if_nameindex(3). delim off
if_nametoindex(3)
