FreeBSD/Linux Kernel Cross Reference
sys/include/asm-alpha/socket.h

     #ifndef _ASM_SOCKET_H
     #define _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
    /* To add :#define SO_REUSEPORT 0x0200 */
    
    #define SO_TYPE         0x1008
    #define SO_ERROR        0x1007
    #define SO_SNDBUF       0x1001
    #define SO_RCVBUF       0x1002
    #define SO_RCVLOWAT     0x1010
    #define SO_SNDLOWAT     0x1011
    #define SO_RCVTIMEO     0x1012
    #define SO_SNDTIMEO     0x1013
    #define SO_ACCEPTCONN   0x1014
    
    /* 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_PEERNAME             28
    #define SO_TIMESTAMP            29
    #define SCM_TIMESTAMP           SO_TIMESTAMP
    
    /* 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
    
    /* Nast libc5 fixup - bletch */
    #if defined(__KERNEL__)
    /* Socket types. */
    #define SOCK_STREAM     1               /* stream (connection) socket   */
    #define SOCK_DGRAM      2               /* datagram (conn.less) socket  */
    #define SOCK_RAW        3               /* raw socket                   */
    #define SOCK_RDM        4               /* reliably-delivered message   */
    #define SOCK_SEQPACKET  5               /* sequential packet socket     */
    #define SOCK_PACKET     10              /* linux specific way of        */
                                            /* getting packets at the dev   */
                                            /* level.  For writing rarp and */
                                            /* other similar things on the  */
                                            /* user level.                  */
    #define SOCK_MAX        (SOCK_PACKET+1)
    #endif
    
    #endif /* _ASM_SOCKET_H */

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