LXR linux/include/uapi/linux/socket.h

   1#ifndef _UAPI_LINUX_SOCKET_H
   2#define _UAPI_LINUX_SOCKET_H
   3
   4/*
   5 * Desired design of maximum size and alignment (see RFC2553)
   6 */
   7#define _K_SS_MAXSIZE   128     /* Implementation specific max size */
   8#define _K_SS_ALIGNSIZE (__alignof__ (struct sockaddr *))
   9                                /* Implementation specific desired alignment */
  10
  11typedef unsigned short __kernel_sa_family_t;
  12
  13struct __kernel_sockaddr_storage {
  14        __kernel_sa_family_t    ss_family;              /* address family */
  15        /* Following field(s) are implementation specific */
  16        char            __data[_K_SS_MAXSIZE - sizeof(unsigned short)];
  17                                /* space to achieve desired size, */
  18                                /* _SS_MAXSIZE value minus size of ss_family */
  19} __attribute__ ((aligned(_K_SS_ALIGNSIZE)));   /* force desired alignment */
  20
  21#endif /* _UAPI_LINUX_SOCKET_H */
  22