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 10 typedef unsigned short __kernel_sa_family_t; 11 12 /* 13 * The definition uses anonymous union and struct in order to control the 14 * default alignment. 15 */ 16 struct __kernel_sockaddr_storage { 17 union { 18 struct { 19 __kernel_sa_family_t ss_family; /* address family */ 20 /* Following field(s) are implementation specific */ 21 char __data[_K_SS_MAXSIZE - sizeof(unsigned short)]; 22 /* space to achieve desired size, */ 23 /* _SS_MAXSIZE value minus size of ss_family */ 24 }; 25 void *__align; /* implementation specific desired alignment */ 26 }; 27 }; 28 29 #define SOCK_SNDBUF_LOCK 1 30 #define SOCK_RCVBUF_LOCK 2 31 32 #define SOCK_BUF_LOCK_MASK (SOCK_SNDBUF_LOCK | SOCK_RCVBUF_LOCK) 33 34 #define SOCK_TXREHASH_DEFAULT 255 35 #define SOCK_TXREHASH_DISABLED 0 36 #define SOCK_TXREHASH_ENABLED 1 37 38 #endif /* _UAPI_LINUX_SOCKET_H */ 39