bsd/net/iptap.h

   1 /*
   2  * Copyright (c) 1999-2010 Apple Inc. All rights reserved.
   3  *
   4  * @APPLE_OSREFERENCE_LICENSE_HEADER_START@
   5  *
   6  * This file contains Original Code and/or Modifications of Original Code
   7  * as defined in and that are subject to the Apple Public Source License
   8  * Version 2.0 (the 'License'). You may not use this file except in
   9  * compliance with the License. The rights granted to you under the License
  10  * may not be used to create, or enable the creation or redistribution of,
  11  * unlawful or unlicensed copies of an Apple operating system, or to
  12  * circumvent, violate, or enable the circumvention or violation of, any
  13  * terms of an Apple operating system software license agreement.
  14  *
  15  * Please obtain a copy of the License at
  16  * http://www.opensource.apple.com/apsl/ and read it before using this file.
  17  *
  18  * The Original Code and all software distributed under the License are
  19  * distributed on an 'AS IS' basis, WITHOUT WARRANTY OF ANY KIND, EITHER
  20  * EXPRESS OR IMPLIED, AND APPLE HEREBY DISCLAIMS ALL SUCH WARRANTIES,
  21  * INCLUDING WITHOUT LIMITATION, ANY WARRANTIES OF MERCHANTABILITY,
  22  * FITNESS FOR A PARTICULAR PURPOSE, QUIET ENJOYMENT OR NON-INFRINGEMENT.
  23  * Please see the License for the specific language governing rights and
  24  * limitations under the License.
  25  *
  26  * @APPLE_OSREFERENCE_LICENSE_HEADER_END@
  27  */
  28 #ifndef IPTAP_H
  29 #define IPTAP_H
  30
  31 #include <net/if.h>
  32
  33 #define IPTAP_CONTROL_NAME "com.apple.net.iptap_control"
  34
  35 #define IPTAP_BUFFERSZ  (128 * 1024)
  36 #define IPTAP_VERSION_1         0x1
  37
  38 enum {
  39         IPTAP_OUTPUT_TAG        =       0x01,
  40         IPTAP_INPUT_TAG         =       0x10,
  41         IPTAP_UNKNOWN_TAG       =       0x11
  42 };
  43
  44 #pragma pack(push)
  45 #pragma pack(1)
  46
  47 typedef struct iptap_hdr_t {
  48         uint32_t        hdr_length;
  49         uint8_t         version;
  50         uint32_t        length;
  51         uint8_t         type;
  52         uint16_t        unit;
  53         uint8_t         io;
  54         uint32_t        protocol_family;
  55         uint32_t        frame_pre_length;
  56         uint32_t        frame_pst_length;
  57         char            if_name[IFNAMSIZ];
  58 } __attribute__ ((__packed__)) iptap_hdr_t;
  59
  60 #pragma pack(pop)
  61
  62 #ifdef KERNEL_PRIVATE
  63
  64 extern void iptap_init(void);
  65 extern void iptap_ipf_input(struct ifnet *, protocol_family_t, struct mbuf *, char *);
  66 extern void iptap_ipf_output(struct ifnet *, protocol_family_t, struct mbuf *, u_int32_t, u_int32_t);
  67 #if 0
  68 extern void iptap_destroy(void);
  69 #endif
  70
  71 #endif /* KERNEL_PRIVATE */
  72 #endif /* IPTAP_H */