The C and C++ Include Header Files

/usr/include/linux/netconf.h


$ cat -n /usr/include/linux/netconf.h

     1	/* SPDX-License-Identifier: GPL-2.0 WITH Linux-syscall-note */
     2	#ifndef _LINUX_NETCONF_H_
     3	#define _LINUX_NETCONF_H_
     4	
     5	#include <linux/types.h>
     6	#include <linux/netlink.h>
     7	
     8	struct netconfmsg {
     9		__u8	ncm_family;
    10	};
    11	
    12	enum {
    13		NETCONFA_UNSPEC,
    14		NETCONFA_IFINDEX,
    15		NETCONFA_FORWARDING,
    16		NETCONFA_RP_FILTER,
    17		NETCONFA_MC_FORWARDING,
    18		NETCONFA_PROXY_NEIGH,
    19		NETCONFA_IGNORE_ROUTES_WITH_LINKDOWN,
    20		NETCONFA_INPUT,
    21		NETCONFA_BC_FORWARDING,
    22		__NETCONFA_MAX
    23	};
    24	#define NETCONFA_MAX	(__NETCONFA_MAX - 1)
    25	#define NETCONFA_ALL	-1
    26	
    27	#define NETCONFA_IFINDEX_ALL		-1
    28	#define NETCONFA_IFINDEX_DEFAULT	-2
    29	
    30	#endif /* _LINUX_NETCONF_H_ */