include/uapi/linux/socket.h

   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 */