1 /* SPDX-License-Identifier: GPL-2.0 WITH Linux-syscall-note */ 2 #ifndef _UAPI_LINUX_SOCKET_H 3 #define _UAPI_LINUX_SOCKET_H 4 5 /* 6 * Desired design of maximum size and alignment (see RFC2553) 7 */ 8 #define _K_SS_MAXSIZE 128 /* Implementation specific max size */ 9 #define _K_SS_ALIGNSIZE (__alignof__ (struct sockaddr *)) 10 /* Implementation specific desired alignment */ 11 12 typedef unsigned short __kernel_sa_family_t; 13 14 struct __kernel_sockaddr_storage { 15 __kernel_sa_family_t ss_family; /* address family */ 16 /* Following field(s) are implementation specific */ 17 char __data[_K_SS_MAXSIZE - sizeof(unsigned short)]; 18 /* space to achieve desired size, */ 19 /* _SS_MAXSIZE value minus size of ss_family */ 20 } __attribute__ ((aligned(_K_SS_ALIGNSIZE))); /* force desired alignment */ 21 22 #endif /* _UAPI_LINUX_SOCKET_H */ 23