The C and C++ Include Header Files

/usr/include/linux/net.h


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

     1	/* SPDX-License-Identifier: GPL-2.0+ WITH Linux-syscall-note */
     2	/*
     3	 * NET		An implementation of the SOCKET network access protocol.
     4	 *		This is the master header file for the Linux NET layer,
     5	 *		or, in plain English: the networking handling part of the
     6	 *		kernel.
     7	 *
     8	 * Version:	@(#)net.h	1.0.3	05/25/93
     9	 *
    10	 * Authors:	Orest Zborowski, <obz@Kodak.COM>
    11	 *		Ross Biro
    12	 *		Fred N. van Kempen, <waltje@uWalt.NL.Mugnet.ORG>
    13	 *
    14	 *		This program is free software; you can redistribute it and/or
    15	 *		modify it under the terms of the GNU General Public License
    16	 *		as published by the Free Software Foundation; either version
    17	 *		2 of the License, or (at your option) any later version.
    18	 */
    19	#ifndef _LINUX_NET_H
    20	#define _LINUX_NET_H
    21	
    22	#include <linux/socket.h>
    23	#include <asm/socket.h>
    24	
    25	#define NPROTO		AF_MAX
    26	
    27	#define SYS_SOCKET	1		/* sys_socket(2)		*/
    28	#define SYS_BIND	2		/* sys_bind(2)			*/
    29	#define SYS_CONNECT	3		/* sys_connect(2)		*/
    30	#define SYS_LISTEN	4		/* sys_listen(2)		*/
    31	#define SYS_ACCEPT	5		/* sys_accept(2)		*/
    32	#define SYS_GETSOCKNAME	6		/* sys_getsockname(2)		*/
    33	#define SYS_GETPEERNAME	7		/* sys_getpeername(2)		*/
    34	#define SYS_SOCKETPAIR	8		/* sys_socketpair(2)		*/
    35	#define SYS_SEND	9		/* sys_send(2)			*/
    36	#define SYS_RECV	10		/* sys_recv(2)			*/
    37	#define SYS_SENDTO	11		/* sys_sendto(2)		*/
    38	#define SYS_RECVFROM	12		/* sys_recvfrom(2)		*/
    39	#define SYS_SHUTDOWN	13		/* sys_shutdown(2)		*/
    40	#define SYS_SETSOCKOPT	14		/* sys_setsockopt(2)		*/
    41	#define SYS_GETSOCKOPT	15		/* sys_getsockopt(2)		*/
    42	#define SYS_SENDMSG	16		/* sys_sendmsg(2)		*/
    43	#define SYS_RECVMSG	17		/* sys_recvmsg(2)		*/
    44	#define SYS_ACCEPT4	18		/* sys_accept4(2)		*/
    45	#define SYS_RECVMMSG	19		/* sys_recvmmsg(2)		*/
    46	#define SYS_SENDMMSG	20		/* sys_sendmmsg(2)		*/
    47	
    48	typedef enum {
    49		SS_FREE = 0,			/* not allocated		*/
    50		SS_UNCONNECTED,			/* unconnected to any socket	*/
    51		SS_CONNECTING,			/* in process of connecting	*/
    52		SS_CONNECTED,			/* connected to socket		*/
    53		SS_DISCONNECTING		/* in process of disconnecting	*/
    54	} socket_state;
    55	
    56	#define __SO_ACCEPTCON	(1 << 16)	/* performed a listen		*/
    57	
    58	#endif /* _LINUX_NET_H */