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 72 extern void gif_init(void); 73 74 struct encaptab; 75 76 struct 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