include/sys/socket_impl.h

   1 /*
   2  * CDDL HEADER START
   3  *
   4  * The contents of this file are subject to the terms of the
   5  * Common Development and Distribution License (the "License").
   6  * You may not use this file except in compliance with the License.
   7  *
   8  * You can obtain a copy of the license at usr/src/OPENSOLARIS.LICENSE
   9  * or http://www.opensolaris.org/os/licensing.
  10  * See the License for the specific language governing permissions
  11  * and limitations under the License.
  12  *
  13  * When distributing Covered Code, include this CDDL HEADER in each
  14  * file and include the License file at usr/src/OPENSOLARIS.LICENSE.
  15  * If applicable, add the following below this CDDL HEADER, with the
  16  * fields enclosed by brackets "[]" replaced with your own identifying
  17  * information: Portions Copyright [yyyy] [name of copyright owner]
  18  *
  19  * CDDL HEADER END
  20  */
  21 /*
  22  * Copyright 2009 Sun Microsystems, Inc.  All rights reserved.
  23  * Use is subject to license terms.
  24  */
  25
  26 /*      Copyright (c) 1983, 1984, 1985, 1986, 1987, 1988, 1989 AT&T     */
  27 /*        All Rights Reserved   */
  28
  29 /*
  30  * Portions of this source code were derived from Berkeley 4.3 BSD
  31  * under license from the Regents of the University of California.
  32  */
  33
  34 #ifndef _SYS_SOCKET_IMPL_H
  35 #define _SYS_SOCKET_IMPL_H
  36
  37 #ifdef  __cplusplus
  38 extern "C" {
  39 #endif
  40
  41 #ifndef _SA_FAMILY_T
  42 #define _SA_FAMILY_T
  43 typedef uint16_t        sa_family_t;
  44 #endif
  45
  46 /*
  47  * Structure used by kernel to store most
  48  * addresses.
  49  */
  50 struct sockaddr {
  51         sa_family_t     sa_family;      /* address family */
  52         char            sa_data[14];    /* up to 14 bytes of direct address */
  53 };
  54
  55 #if !defined(_XPG4_2) || defined(__EXTENSIONS__)
  56 #include <sys/un.h>
  57 #include <net/if_dl.h>
  58 #endif  /* !defined(_XPG4_2) || defined(__EXTENSIONS__) */
  59
  60 #if !defined(_XPG4_2) || defined(_XPG6) || defined(__EXTENSIONS__)
  61 /*
  62  * sockaddr_storage:
  63  * Common superset of at least AF_INET, AF_INET6 and AF_LINK sockaddr
  64  * structures. Has sufficient size and alignment for those sockaddrs.
  65  */
  66
  67 /*
  68  * Desired maximum size, alignment size and related types.
  69  */
  70 #define _SS_MAXSIZE     256     /* Implementation specific max size */
  71
  72 /*
  73  * To represent desired sockaddr max alignment for platform, a
  74  * type is chosen which may depend on implementation platform architecture.
  75  * Type chosen based on alignment size restrictions from <sys/isa_defs.h>.
  76  * We desire to force up to (but no more than) 64-bit (8 byte) alignment,
  77  * on platforms where it is possible to do so. (e.g not possible on ia32).
  78  * For all currently supported platforms by our implementation
  79  * in <sys/isa_defs.h>, (i.e. sparc, sparcv9, ia32, ia64)
  80  * type "double" is suitable for that intent.
  81  *
  82  * Note: Type "double" is chosen over the more obvious integer type int64_t.
  83  *   int64_t is not a valid type for strict ANSI/ISO C compilation on ILP32.
  84  */
  85 typedef double          sockaddr_maxalign_t;
  86
  87 #define _SS_ALIGNSIZE   (sizeof (sockaddr_maxalign_t))
  88
  89 /*
  90  * Definitions used for sockaddr_storage structure paddings design.
  91  */
  92 #define _SS_PAD1SIZE    (_SS_ALIGNSIZE - sizeof (sa_family_t))
  93 #define _SS_PAD2SIZE    (_SS_MAXSIZE - (sizeof (sa_family_t)+ \
  94                         _SS_PAD1SIZE + _SS_ALIGNSIZE))
  95
  96 struct sockaddr_storage {
  97         sa_family_t     ss_family;      /* Address family */
  98         /* Following fields are implementation specific */
  99         char            _ss_pad1[_SS_PAD1SIZE];
 100         sockaddr_maxalign_t _ss_align;
 101         char            _ss_pad2[_SS_PAD2SIZE];
 102 };
 103 #endif  /* !defined(_XPG4_2) || defined(_XPG6) || defined(__EXTENSIONS__) */
 104
 105 /*
 106  * To be compatible with the Linux interfaces used, this structure is
 107  * placed in socket_impl.h so that an include for <sys/socket.h> will
 108  * pickup this structure. This structure is for use with PF_PACKET
 109  * sockets.
 110  */
 111 struct sockaddr_ll {
 112         uint16_t        sll_family;
 113         uint16_t        sll_protocol;
 114         int32_t         sll_ifindex;
 115         uint16_t        sll_hatype;
 116         uint8_t         sll_pkttype;
 117         uint8_t         sll_halen;
 118         uint8_t         sll_addr[8];
 119 };
 120
 121 #define LINUX_SLL_HOST          0
 122 #define LINUX_SLL_BROADCAST     1
 123 #define LINUX_SLL_MULTICAST     2
 124 #define LINUX_SLL_OTHERHOST     3
 125 #define LINUX_SLL_OUTGOING      4
 126
 127 #ifdef  __cplusplus
 128 }
 129 #endif
 130
 131 #endif  /* _SYS_SOCKET_IMPL_H */