1/*
2 * Copyright (c) 2000-2018 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/* $KAME: if_gif.h,v 1.7 2000/02/22 14:01:46 itojun Exp $ */
29
30/*
31 * Copyright (C) 1995, 1996, 1997, and 1998 WIDE Project.
32 * All rights reserved.
33 *
34 * Redistribution and use in source and binary forms, with or without
35 * modification, are permitted provided that the following conditions
36 * are met:
37 * 1. Redistributions of source code must retain the above copyright
38 * notice, this list of conditions and the following disclaimer.
39 * 2. Redistributions in binary form must reproduce the above copyright
40 * notice, this list of conditions and the following disclaimer in the
41 * documentation and/or other materials provided with the distribution.
42 * 3. Neither the name of the project nor the names of its contributors
43 * may be used to endorse or promote products derived from this software
44 * without specific prior written permission.
45 *
46 * THIS SOFTWARE IS PROVIDED BY THE PROJECT AND CONTRIBUTORS ``AS IS'' AND
47 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
48 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
49 * ARE DISCLAIMED. IN NO EVENT SHALL THE PROJECT OR CONTRIBUTORS BE LIABLE
50 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
51 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
52 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
53 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
54 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
55 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
56 * SUCH DAMAGE.
57 */
58
59/*
60 * if_gif.h
61 */
62
63#ifndef _NET_IF_GIF_H_
64#define _NET_IF_GIF_H_
65#include <sys/appleapiopts.h>
66
67#include <netinet/in.h>
68/* xxx sigh, why route have struct route instead of pointer? */
69
70#ifdef BSD_KERNEL_PRIVATE
71
72extern void gif_init(void);
73
74struct encaptab;
75
76struct gif_softc {
77 ifnet_t gif_if; /* pointer back to the interface */
78 struct sockaddr *gif_psrc; /* Physical src addr */
79 struct sockaddr *gif_pdst; /* Physical dst addr */
80#ifdef __APPLE__
81 protocol_family_t gif_proto; /* dlil protocol attached */
82#endif
83 union {
84 struct route gifscr_ro; /* xxx */
85 struct route_in6 gifscr_ro6; /* xxx */
86 } gifsc_gifscr;
87 int gif_flags;
88#define IFGIF_DETACHING 0x1
89 int gif_called;
90 const struct encaptab *encap_cookie4;
91 const struct encaptab *encap_cookie6;
92 TAILQ_ENTRY(gif_softc) gif_link; /* all gif's are linked */
93 bpf_tap_mode tap_mode;
94 bpf_packet_func tap_callback;
95 char gif_ifname[IFNAMSIZ];
96 decl_lck_mtx_data(, gif_lock); /* lock for gif softc structure */
97};
98
99#define GIF_LOCK(_sc) lck_mtx_lock(&(_sc)->gif_lock)
100#define GIF_UNLOCK(_sc) lck_mtx_unlock(&(_sc)->gif_lock)
101#define GIF_LOCK_ASSERT(_sc) LCK_MTX_ASSERT(&(_sc)->gif_lock, \
102 LCK_MTX_ASSERT_OWNED)
103
104#define gif_ro gifsc_gifscr.gifscr_ro
105#define gif_ro6 gifsc_gifscr.gifscr_ro6
106
107#endif /* BSD_KERNEL_PRIVATE */
108
109#define GIF_MTU (1280) /* Default MTU */
110#define GIF_MTU_MIN (1280) /* Minimum MTU */
111#define GIF_MTU_MAX (8192) /* Maximum MTU */
112
113#endif /* _NET_IF_GIF_H_ */
114