1 /* $FreeBSD$ */ 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 48 struct encaptab; 49 50 extern void (*ng_gif_input_p)(struct ifnet *ifp, struct mbuf **mp, 51 int af); 52 extern void (*ng_gif_input_orphan_p)(struct ifnet *ifp, struct mbuf *m, 53 int af); 54 extern int (*ng_gif_output_p)(struct ifnet *ifp, struct mbuf **mp); 55 extern void (*ng_gif_attach_p)(struct ifnet *ifp); 56 extern void (*ng_gif_detach_p)(struct ifnet *ifp); 57 58 struct 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 const struct encaptab *encap_cookie4; 71 const struct encaptab *encap_cookie6; 72 void *gif_netgraph; /* ng_gif(4) netgraph node info */ 73 LIST_ENTRY(gif_softc) gif_list; /* all gif's are linked */ 74 }; 75 #define GIF2IFP(sc) ((sc)->gif_ifp) 76 #define GIF_LOCK_INIT(sc) mtx_init(&(sc)->gif_mtx, "gif softc", \ 77 NULL, MTX_DEF) 78 #define GIF_LOCK_DESTROY(sc) mtx_destroy(&(sc)->gif_mtx) 79 #define GIF_LOCK(sc) mtx_lock(&(sc)->gif_mtx) 80 #define GIF_UNLOCK(sc) mtx_unlock(&(sc)->gif_mtx) 81 #define GIF_LOCK_ASSERT(sc) mtx_assert(&(sc)->gif_mtx, MA_OWNED) 82 83 #define gif_ro gifsc_gifscr.gifscr_ro 84 #ifdef INET6 85 #define gif_ro6 gifsc_gifscr.gifscr_ro6 86 #endif 87 88 #define GIF_MTU (1280) /* Default MTU */ 89 #define GIF_MTU_MIN (1280) /* Minimum MTU */ 90 #define GIF_MTU_MAX (8192) /* Maximum MTU */ 91 92 #define MTAG_GIF 1080679712 93 #define MTAG_GIF_CALLED 0 94 95 struct etherip_header { 96 u_int8_t eip_ver; /* version/reserved */ 97 u_int8_t eip_pad; /* required padding byte */ 98 }; 99 #define ETHERIP_VER_VERS_MASK 0x0f 100 #define ETHERIP_VER_RSVD_MASK 0xf0 101 #define ETHERIP_VERSION 0x03 102 103 /* Prototypes */ 104 void gif_input(struct mbuf *, int, struct ifnet *); 105 int gif_output(struct ifnet *, struct mbuf *, struct sockaddr *, 106 struct rtentry *); 107 int gif_ioctl(struct ifnet *, u_long, caddr_t); 108 int gif_set_tunnel(struct ifnet *, struct sockaddr *, struct sockaddr *); 109 void gif_delete_tunnel(struct ifnet *); 110 int gif_encapcheck(const struct mbuf *, int, int, void *); 111 112 #endif /* _KERNEL */ 113 114 #endif /* _NET_IF_GIF_H_ */ 115