include/inet/iptun.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 #ifndef _INET_IPTUN_H
  27 #define _INET_IPTUN_H
  28
  29 #include <sys/socket.h>
  30 #include <sys/types.h>
  31 #include <sys/dld_ioc.h>
  32 #include <netinet/in.h>
  33 #include <netinet/ip6.h>
  34
  35 #ifdef  __cplusplus
  36 extern "C" {
  37 #endif
  38
  39 /*
  40  * from http://www.iana.org/assignments/ip-parameters
  41  */
  42 #define IPTUN_DEFAULT_HOPLIMIT          64
  43 /* from RFC 2473 */
  44 #define IPTUN_DEFAULT_ENCAPLIMIT        4
  45
  46 #define IPTUN_CREATE            IPTUNIOC(1)
  47 #define IPTUN_DELETE            IPTUNIOC(2)
  48 #define IPTUN_MODIFY            IPTUNIOC(3)
  49 #define IPTUN_INFO              IPTUNIOC(4)
  50 #define IPTUN_SET_6TO4RELAY     IPTUNIOC(9)
  51 #define IPTUN_GET_6TO4RELAY     IPTUNIOC(10)
  52
  53 typedef enum {
  54         IPTUN_TYPE_UNKNOWN = 0,
  55         IPTUN_TYPE_IPV4,
  56         IPTUN_TYPE_IPV6,
  57         IPTUN_TYPE_6TO4
  58 } iptun_type_t;
  59
  60 /*
  61  * To maintain proper alignment of fields between 32bit user-land and 64bit
  62  * kernel, all fields in iptun_kparams_t after itk_fields must be in
  63  * descending order of size.  Due to strict structure size checks done in the
  64  * iptun ioctl processing, the structure size must be the same on 32 and 64
  65  * bit.  amd64 will pad the end of the structure to make the end 64bit
  66  * aligned, so we must add explicit padding to make sure that it's similarly
  67  * aligned when compiled in 32 bit mode.
  68  */
  69 typedef struct iptun_kparams {
  70         datalink_id_t           iptun_kparam_linkid;
  71         uint32_t                iptun_kparam_flags;
  72         struct sockaddr_storage iptun_kparam_laddr;     /* local address */
  73         struct sockaddr_storage iptun_kparam_raddr;     /* remote address */
  74         ipsec_req_t             iptun_kparam_secinfo;
  75         iptun_type_t            iptun_kparam_type;
  76         uint32_t                _iptun_kparam_padding;
  77 } iptun_kparams_t;
  78
  79 /* itk_flags */
  80 #define IPTUN_KPARAM_TYPE       0x00000001 /* itk_type is set */
  81 #define IPTUN_KPARAM_LADDR      0x00000002 /* itk_laddr is set */
  82 #define IPTUN_KPARAM_RADDR      0x00000004 /* itk_raddr is set */
  83 #define IPTUN_KPARAM_SECINFO    0x00000008 /* itk_secinfo is set */
  84 #define IPTUN_KPARAM_IMPLICIT   0x00000010 /* implicitly created IP tunnel */
  85 #define IPTUN_KPARAM_IPSECPOL   0x00000020 /* ipsecconf(8) policy present */
  86
  87 #ifdef  __cplusplus
  88 }
  89 #endif
  90
  91 #endif  /* _INET_IPTUN_H */