<net/if.h> (original) (raw)

The <net/if.h> header shall define the if_nameindex structure, which shall include at least the following members:

unsigned if_index Numeric index of the interface. char *if_name Null-terminated name of the interface.

The <net/if.h> header shall define the following symbolic constant for the length of a buffer containing an interface name (including the terminating NULL character):

IF_NAMESIZE

Interface name length.

The following shall be declared as functions and may also be defined as macros. Function prototypes shall be provided.

void if_freenameindex(struct if_nameindex *); char *if_indextoname(unsigned, char *); struct if_nameindex *if_nameindex(void); unsigned if_nametoindex(const char *);

The following sections are informative.

End of informative text.