if_gif.h revision 178888
1/* $FreeBSD: head/sys/net/if_gif.h 178888 2008-05-09 23:03:00Z julian $ */ 2/* $KAME: if_gif.h,v 1.17 2000/09/11 11:36:41 sumikawa Exp $ */ 3 4/*- 5 * Copyright (C) 1995, 1996, 1997, and 1998 WIDE Project. 6 * All rights reserved. 7 * 8 * Redistribution and use in source and binary forms, with or without 9 * modification, are permitted provided that the following conditions 10 * are met: 11 * 1. Redistributions of source code must retain the above copyright 12 * notice, this list of conditions and the following disclaimer. 13 * 2. Redistributions in binary form must reproduce the above copyright 14 * notice, this list of conditions and the following disclaimer in the 15 * documentation and/or other materials provided with the distribution. 16 * 3. Neither the name of the project nor the names of its contributors 17 * may be used to endorse or promote products derived from this software 18 * without specific prior written permission. 19 * 20 * THIS SOFTWARE IS PROVIDED BY THE PROJECT AND CONTRIBUTORS ``AS IS'' AND 21 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 22 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 23 * ARE DISCLAIMED. IN NO EVENT SHALL THE PROJECT OR CONTRIBUTORS BE LIABLE 24 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 25 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 26 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 27 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 28 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 29 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 30 * SUCH DAMAGE. 31 */ 32 33/* 34 * if_gif.h 35 */ 36 37#ifndef _NET_IF_GIF_H_ 38#define _NET_IF_GIF_H_ 39 40 41#ifdef _KERNEL 42#include "opt_inet.h" 43#include "opt_inet6.h" 44 45#include <netinet/in.h> 46/* xxx sigh, why route have struct route instead of pointer? */ 47 48struct encaptab; 49 50extern void (*ng_gif_input_p)(struct ifnet *ifp, struct mbuf **mp, 51 int af); 52extern void (*ng_gif_input_orphan_p)(struct ifnet *ifp, struct mbuf *m, 53 int af); 54extern int (*ng_gif_output_p)(struct ifnet *ifp, struct mbuf **mp); 55extern void (*ng_gif_attach_p)(struct ifnet *ifp); 56extern void (*ng_gif_detach_p)(struct ifnet *ifp); 57 58struct gif_softc { 59 struct ifnet *gif_ifp; 60 struct mtx gif_mtx; 61 struct sockaddr *gif_psrc; /* Physical src addr */ 62 struct sockaddr *gif_pdst; /* Physical dst addr */ 63 union { 64 struct route gifscr_ro; /* xxx */ 65#ifdef INET6 66 struct route_in6 gifscr_ro6; /* xxx */ 67#endif 68 } gifsc_gifscr; 69 int gif_flags; 70 u_int gif_fibnum; 71 const struct encaptab *encap_cookie4; 72 const struct encaptab *encap_cookie6; 73 void *gif_netgraph; /* ng_gif(4) netgraph node info */ 74 LIST_ENTRY(gif_softc) gif_list; /* all gif's are linked */ 75}; 76#define GIF2IFP(sc) ((sc)->gif_ifp) 77#define GIF_LOCK_INIT(sc) mtx_init(&(sc)->gif_mtx, "gif softc", \ 78 NULL, MTX_DEF) 79#define GIF_LOCK_DESTROY(sc) mtx_destroy(&(sc)->gif_mtx) 80#define GIF_LOCK(sc) mtx_lock(&(sc)->gif_mtx) 81#define GIF_UNLOCK(sc) mtx_unlock(&(sc)->gif_mtx) 82#define GIF_LOCK_ASSERT(sc) mtx_assert(&(sc)->gif_mtx, MA_OWNED) 83 84#define gif_ro gifsc_gifscr.gifscr_ro 85#ifdef INET6 86#define gif_ro6 gifsc_gifscr.gifscr_ro6 87#endif 88 89#define GIF_MTU (1280) /* Default MTU */ 90#define GIF_MTU_MIN (1280) /* Minimum MTU */ 91#define GIF_MTU_MAX (8192) /* Maximum MTU */ 92 93#define MTAG_GIF 1080679712 94#define MTAG_GIF_CALLED 0 95 96struct etherip_header { 97 u_int8_t eip_ver; /* version/reserved */ 98 u_int8_t eip_pad; /* required padding byte */ 99}; 100#define ETHERIP_VER_VERS_MASK 0x0f 101#define ETHERIP_VER_RSVD_MASK 0xf0 102#define ETHERIP_VERSION 0x03 103 104/* Prototypes */ 105void gif_input(struct mbuf *, int, struct ifnet *); 106int gif_output(struct ifnet *, struct mbuf *, struct sockaddr *, 107 struct rtentry *); 108int gif_ioctl(struct ifnet *, u_long, caddr_t); 109int gif_set_tunnel(struct ifnet *, struct sockaddr *, struct sockaddr *); 110void gif_delete_tunnel(struct ifnet *); 111int gif_encapcheck(const struct mbuf *, int, int, void *); 112 113#endif /* _KERNEL */ 114 115#endif /* _NET_IF_GIF_H_ */ 116