if_nametoindex(3)

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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
  ifname
      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).

Index for
Section 3

Alphabetical
listing for I

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