1. 根目录:
2. arch
3. alpha
4. include
5. uapi
6. asm
7. socket.h

#ifndef _UAPI_ASM_SOCKET_H
#define _UAPI_ASM_SOCKET_H

#include <asm/sockios.h>

/* For setsockopt(2) */
/*
 * Note: we only bother about making the SOL_SOCKET options
 * same as OSF/1, as that's all that "normal" programs are
 * likely to set.  We don't necessarily want to be binary
 * compatible with _everything_. 
 */
#define SOL_SOCKET	0xffff

#define SO_DEBUG	0x0001
#define SO_REUSEADDR	0x0004
#define SO_KEEPALIVE	0x0008
#define SO_DONTROUTE	0x0010
#define SO_BROADCAST	0x0020
#define SO_LINGER	0x0080
#define SO_OOBINLINE	0x0100
#define SO_REUSEPORT	0x0200

#define SO_TYPE		0x1008
#define SO_ERROR	0x1007
#define SO_SNDBUF	0x1001
#define SO_RCVBUF	0x1002
#define SO_SNDBUFFORCE	0x100a
#define SO_RCVBUFFORCE	0x100b
#define	SO_RCVLOWAT	0x1010
#define	SO_SNDLOWAT	0x1011
#define	SO_RCVTIMEO	0x1012
#define	SO_SNDTIMEO	0x1013
#define SO_ACCEPTCONN	0x1014
#define SO_PROTOCOL	0x1028
#define SO_DOMAIN	0x1029

/* linux-specific, might as well be the same as on i386 */
#define SO_NO_CHECK	11
#define SO_PRIORITY	12
#define SO_BSDCOMPAT	14

#define SO_PASSCRED	17
#define SO_PEERCRED	18
#define SO_BINDTODEVICE 25

/* Socket filtering */
#define SO_ATTACH_FILTER        26
#define SO_DETACH_FILTER        27
#define SO_GET_FILTER		SO_ATTACH_FILTER

#define SO_PEERNAME		28
#define SO_TIMESTAMP		29
#define SCM_TIMESTAMP		SO_TIMESTAMP

#define SO_PEERSEC		30
#define SO_PASSSEC		34
#define SO_TIMESTAMPNS		35
#define SCM_TIMESTAMPNS		SO_TIMESTAMPNS

/* Security levels - as per NRL IPv6 - don't actually do anything */
#define SO_SECURITY_AUTHENTICATION		19
#define SO_SECURITY_ENCRYPTION_TRANSPORT	20
#define SO_SECURITY_ENCRYPTION_NETWORK		21

#define SO_MARK			36

#define SO_TIMESTAMPING		37
#define SCM_TIMESTAMPING	SO_TIMESTAMPING

#define SO_RXQ_OVFL             40

#define SO_WIFI_STATUS		41
#define SCM_WIFI_STATUS		SO_WIFI_STATUS
#define SO_PEEK_OFF		42

/* Instruct lower device to use last 4-bytes of skb data as FCS */
#define SO_NOFCS		43

#define SO_LOCK_FILTER		44

#define SO_SELECT_ERR_QUEUE	45

#endif /* _UAPI_ASM_SOCKET_H */