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;
67 CK_LIST_HEAD(gif_list, gif_softc);
68 MALLOC_DECLARE(M_GIF);
71 #define GIF_HASH_SIZE (1 << 4)
74 #define GIF2IFP(sc) ((sc)->gif_ifp)
75 #define gif_iphdr gif_uhdr.iphdr
76 #define gif_hdr gif_uhdr.hdr
77 #define gif_ip6hdr gif_uhdr.ip6hdr
79 #define GIF_MTU (1280) /* Default MTU */
80 #define GIF_MTU_MIN (1280) /* Minimum MTU */
81 #define GIF_MTU_MAX (8192) /* Maximum MTU */
83 struct etherip_header {
84 #if BYTE_ORDER == LITTLE_ENDIAN
85 u_int eip_resvl:4, /* reserved */
86 eip_ver:4; /* version */
88 #if BYTE_ORDER == BIG_ENDIAN
89 u_int eip_ver:4, /* version */
90 eip_resvl:4; /* reserved */
92 u_int8_t eip_resvh; /* reserved */
95 #define ETHERIP_VERSION 0x3
96 /* mbuf adjust factor to force 32-bit alignment of IP header */
97 #define ETHERIP_ALIGN 2
99 #define GIF_RLOCK() struct epoch_tracker gif_et; epoch_enter_preempt(net_epoch_preempt, &gif_et)
100 #define GIF_RUNLOCK() epoch_exit_preempt(net_epoch_preempt, &gif_et)
101 #define GIF_WAIT() epoch_wait_preempt(net_epoch_preempt)
104 struct gif_list *gif_hashinit(void);
105 void gif_hashdestroy(struct gif_list *);
107 void gif_input(struct mbuf *, struct ifnet *, int, uint8_t);
108 int gif_output(struct ifnet *, struct mbuf *, const struct sockaddr *,
111 void in_gif_init(void);
112 void in_gif_uninit(void);
113 int in_gif_output(struct ifnet *, struct mbuf *, int, uint8_t);
114 int in_gif_ioctl(struct gif_softc *, u_long, caddr_t);
115 int in_gif_setopts(struct gif_softc *, u_int);
117 void in6_gif_init(void);
118 void in6_gif_uninit(void);
119 int in6_gif_output(struct ifnet *, struct mbuf *, int, uint8_t);
120 int in6_gif_ioctl(struct gif_softc *, u_long, caddr_t);
121 int in6_gif_setopts(struct gif_softc *, u_int);
124 #define GIFGOPTS _IOWR('i', 150, struct ifreq)
125 #define GIFSOPTS _IOW('i', 151, struct ifreq)
127 #define GIF_IGNORE_SOURCE 0x0002
128 #define GIF_OPTMASK (GIF_IGNORE_SOURCE)
130 #endif /* _NET_IF_GIF_H_ */