2 /* $KAME: if_gif.h,v 1.17 2000/09/11 11:36:41 sumikawa Exp $ */
5 * SPDX-License-Identifier: BSD-3-Clause
7 * Copyright (C) 1995, 1996, 1997, and 1998 WIDE Project.
8 * Copyright (c) 2018 Andrey V. Elsukov <ae@FreeBSD.org>
11 * Redistribution and use in source and binary forms, with or without
12 * modification, are permitted provided that the following conditions
14 * 1. Redistributions of source code must retain the above copyright
15 * notice, this list of conditions and the following disclaimer.
16 * 2. Redistributions in binary form must reproduce the above copyright
17 * notice, this list of conditions and the following disclaimer in the
18 * documentation and/or other materials provided with the distribution.
19 * 3. Neither the name of the project nor the names of its contributors
20 * may be used to endorse or promote products derived from this software
21 * without specific prior written permission.
23 * THIS SOFTWARE IS PROVIDED BY THE PROJECT AND CONTRIBUTORS ``AS IS'' AND
24 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
25 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
26 * ARE DISCLAIMED. IN NO EVENT SHALL THE PROJECT OR CONTRIBUTORS BE LIABLE
27 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
28 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
29 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
30 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
31 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
32 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
36 #ifndef _NET_IF_GIF_H_
37 #define _NET_IF_GIF_H_
44 extern void (*ng_gif_input_p)(struct ifnet *ifp, struct mbuf **mp,
46 extern void (*ng_gif_input_orphan_p)(struct ifnet *ifp, struct mbuf *m,
48 extern int (*ng_gif_output_p)(struct ifnet *ifp, struct mbuf **mp);
49 extern void (*ng_gif_attach_p)(struct ifnet *ifp);
50 extern void (*ng_gif_detach_p)(struct ifnet *ifp);
53 struct ifnet *gif_ifp;
58 void *gif_netgraph; /* netgraph node info */
62 struct ip6_hdr *ip6hdr;
65 CK_LIST_ENTRY(gif_softc) chain;
66 CK_LIST_ENTRY(gif_softc) srchash;
68 CK_LIST_HEAD(gif_list, gif_softc);
69 MALLOC_DECLARE(M_GIF);
72 #define GIF_HASH_SIZE (1 << 4)
75 #define GIF2IFP(sc) ((sc)->gif_ifp)
76 #define gif_iphdr gif_uhdr.iphdr
77 #define gif_hdr gif_uhdr.hdr
78 #define gif_ip6hdr gif_uhdr.ip6hdr
80 #define GIF_MTU (1280) /* Default MTU */
81 #define GIF_MTU_MIN (1280) /* Minimum MTU */
82 #define GIF_MTU_MAX (8192) /* Maximum MTU */
84 struct etherip_header {
85 #if BYTE_ORDER == LITTLE_ENDIAN
86 u_int eip_resvl:4, /* reserved */
87 eip_ver:4; /* version */
89 #if BYTE_ORDER == BIG_ENDIAN
90 u_int eip_ver:4, /* version */
91 eip_resvl:4; /* reserved */
93 u_int8_t eip_resvh; /* reserved */
96 #define ETHERIP_VERSION 0x3
97 /* mbuf adjust factor to force 32-bit alignment of IP header */
98 #define ETHERIP_ALIGN 2
100 #define GIF_WAIT() epoch_wait_preempt(net_epoch_preempt)
103 struct gif_list *gif_hashinit(void);
104 void gif_hashdestroy(struct gif_list *);
106 void gif_input(struct mbuf *, struct ifnet *, int, uint8_t);
107 int gif_output(struct ifnet *, struct mbuf *, const struct sockaddr *,
110 void in_gif_init(void);
111 void in_gif_uninit(void);
112 int in_gif_output(struct ifnet *, struct mbuf *, int, uint8_t);
113 int in_gif_ioctl(struct gif_softc *, u_long, caddr_t);
114 int in_gif_setopts(struct gif_softc *, u_int);
116 void in6_gif_init(void);
117 void in6_gif_uninit(void);
118 int in6_gif_output(struct ifnet *, struct mbuf *, int, uint8_t);
119 int in6_gif_ioctl(struct gif_softc *, u_long, caddr_t);
120 int in6_gif_setopts(struct gif_softc *, u_int);
123 #define GIFGOPTS _IOWR('i', 150, struct ifreq)
124 #define GIFSOPTS _IOW('i', 151, struct ifreq)
126 #define GIF_IGNORE_SOURCE 0x0002
127 #define GIF_OPTMASK (GIF_IGNORE_SOURCE)
129 #endif /* _NET_IF_GIF_H_ */