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- /* net/if.h -- declarations for inquiring about network interfaces
- Copyright (C) 2000-2019 Free Software Foundation, Inc.
- This file is part of the GNU C Library.
- The GNU C Library is free software; you can redistribute it and/or
- modify it under the terms of the GNU Lesser General Public
- License as published by the Free Software Foundation; either
- version 2.1 of the License, or (at your option) any later version.
- The GNU C Library is distributed in the hope that it will be useful,
- but WITHOUT ANY WARRANTY; without even the implied warranty of
- MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
- Lesser General Public License for more details.
- You should have received a copy of the GNU Lesser General Public
- License along with the GNU C Library; if not, see
- <http://www.gnu.org/licenses/>. */
- #ifndef _NET_IF_H
- #define _NET_IF_H 1
- #include <features.h>
- __BEGIN_DECLS
- /* Convert an interface name to an index, and vice versa. */
- extern unsigned int if_nametoindex (const char *__ifname) __THROW;
- extern char *if_indextoname (unsigned int __ifindex, char *__ifname) __THROW;
- /* Return a list of all interfaces and their indices. */
- struct if_nameindex
- {
- unsigned int if_index; /* 1, 2, ... */
- char *if_name; /* null terminated name: "eth0", ... */
- };
- extern struct if_nameindex *if_nameindex (void) __THROW;
- /* Free the data returned from if_nameindex. */
- extern void if_freenameindex (struct if_nameindex *__ptr) __THROW;
- __END_DECLS
- #endif /* net/if.h */
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