SOCK_TYPE 和 ETH_P_IP

 两处都有sock_type的定义，

http://lxr.linux.no/linux-bk+v2.6.11.5/include/asm-mips/socket.h#L90

http://lxr.linux.no/linux-bk+v2.6.11.5/include/linux/net.h#L83

  80enum sock_type {
  81        SOCK_STREAM     = 1,
  82        SOCK_DGRAM      = 2,
  83        SOCK_RAW        = 3,
  84        SOCK_RDM        = 4,
  85        SOCK_SEQPACKET  = 5,
  86        SOCK_PACKET     = 10,
  87};

 

上面是我昨天查到的，不知道怎么查到了2.6.11版本的， 今天查到最新版2.6.31的类型变成7个了：

 http://lxr.linux.no/linux+v2.6.31/include/linux/net.h#L91

enum sock_type {
        SOCK_STREAM     = 1,
        SOCK_DGRAM      = 2,
        SOCK_RAW        = 3,
        SOCK_RDM        = 4,
        SOCK_SEQPACKET  = 5,
        SOCK_DCCP       = 6,
        SOCK_PACKET     = 10,
};

 

ETH_P_IP 的定义：

http://lxr.linux.no/#linux+v2.6.31/include/linux/if_ether.h#L45

 

/*
 *      These are the defined Ethernet Protocol ID's.
 */

#define ETH_P_LOOP      0x0060          /* Ethernet Loopback packet     */
#define ETH_P_PUP       0x0200          /* Xerox PUP packet             */
#define ETH_P_PUPAT     0x0201          /* Xerox PUP Addr Trans packet  */
#define ETH_P_IP        0x0800          /* Internet Protocol packet     */
#define ETH_P_X25       0x0805          /* CCITT X.25                   */
#define ETH_P_ARP       0x0806          /* Address Resolution packet    */