LXR iproute2/include/uapi/linux/socket.h

   1/* SPDX-License-Identifier: GPL-2.0 WITH Linux-syscall-note */
   2#ifndef _LINUX_SOCKET_H
   3#define _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
  10typedef 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 */
  16struct __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#endif /* _LINUX_SOCKET_H */
  35