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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 
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 /* _UAPI_LINUX_SOCKET_H */
22