include/linux/socket.h

   1 #ifndef _LINUX_SOCKET_H
   2 #define _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
  11 typedef unsigned short __kernel_sa_family_t;
  12
  13 struct __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 /* _LINUX_SOCKET_H */