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/* $FreeBSD$ */
/* $KAME: if_gif.h,v 1.17 2000/09/11 11:36:41 sumikawa Exp $ */
/*-
* Copyright (C) 1995, 1996, 1997, and 1998 WIDE Project.
* All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
* 1. Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* 2. Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in the
* documentation and/or other materials provided with the distribution.
* 3. Neither the name of the project nor the names of its contributors
* may be used to endorse or promote products derived from this software
* without specific prior written permission.
*
* THIS SOFTWARE IS PROVIDED BY THE PROJECT AND CONTRIBUTORS ``AS IS'' AND
* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
* ARE DISCLAIMED. IN NO EVENT SHALL THE PROJECT OR CONTRIBUTORS BE LIABLE
* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
* SUCH DAMAGE.
*/
/*
* if_gif.h
*/
#ifndef _NET_IF_GIF_H_
#define _NET_IF_GIF_H_
#ifdef _KERNEL
#include "opt_inet.h"
#include "opt_inet6.h"
#include <netinet/in.h>
/* xxx sigh, why route have struct route instead of pointer? */
struct encaptab;
extern void (*ng_gif_input_p)(struct ifnet *ifp, struct mbuf **mp,
int af);
extern void (*ng_gif_input_orphan_p)(struct ifnet *ifp, struct mbuf *m,
int af);
extern int (*ng_gif_output_p)(struct ifnet *ifp, struct mbuf **mp);
extern void (*ng_gif_attach_p)(struct ifnet *ifp);
extern void (*ng_gif_detach_p)(struct ifnet *ifp);
struct gif_softc {
struct ifnet *gif_ifp;
struct mtx gif_mtx;
struct sockaddr *gif_psrc; /* Physical src addr */
struct sockaddr *gif_pdst; /* Physical dst addr */
union {
struct route gifscr_ro; /* xxx */
#ifdef INET6
struct route_in6 gifscr_ro6; /* xxx */
#endif
} gifsc_gifscr;
int gif_flags;
u_int gif_fibnum;
const struct encaptab *encap_cookie4;
const struct encaptab *encap_cookie6;
void *gif_netgraph; /* ng_gif(4) netgraph node info */
LIST_ENTRY(gif_softc) gif_list; /* all gif's are linked */
};
#define GIF2IFP(sc) ((sc)->gif_ifp)
#define GIF_LOCK_INIT(sc) mtx_init(&(sc)->gif_mtx, "gif softc", \
NULL, MTX_DEF)
#define GIF_LOCK_DESTROY(sc) mtx_destroy(&(sc)->gif_mtx)
#define GIF_LOCK(sc) mtx_lock(&(sc)->gif_mtx)
#define GIF_UNLOCK(sc) mtx_unlock(&(sc)->gif_mtx)
#define GIF_LOCK_ASSERT(sc) mtx_assert(&(sc)->gif_mtx, MA_OWNED)
#define gif_ro gifsc_gifscr.gifscr_ro
#ifdef INET6
#define gif_ro6 gifsc_gifscr.gifscr_ro6
#endif
#define GIF_MTU (1280) /* Default MTU */
#define GIF_MTU_MIN (1280) /* Minimum MTU */
#define GIF_MTU_MAX (8192) /* Maximum MTU */
#define MTAG_GIF 1080679712
#define MTAG_GIF_CALLED 0
struct etherip_header {
u_int8_t eip_ver; /* version/reserved */
u_int8_t eip_pad; /* required padding byte */
};
#define ETHERIP_VER_VERS_MASK 0x0f
#define ETHERIP_VER_RSVD_MASK 0xf0
#define ETHERIP_VERSION 0x03
/* Prototypes */
void gif_input(struct mbuf *, int, struct ifnet *);
int gif_output(struct ifnet *, struct mbuf *, struct sockaddr *,
struct rtentry *);
int gif_ioctl(struct ifnet *, u_long, caddr_t);
int gif_set_tunnel(struct ifnet *, struct sockaddr *, struct sockaddr *);
void gif_delete_tunnel(struct ifnet *);
int gif_encapcheck(const struct mbuf *, int, int, void *);
/*
* Virtualization support
*/
struct vnet_gif {
LIST_HEAD(, gif_softc) _gif_softc_list;
int _max_gif_nesting;
int _parallel_tunnels;
int _ip_gif_ttl;
int _ip6_gif_hlim;
};
#ifndef VIMAGE
#ifndef VIMAGE_GLOBALS
extern struct vnet_gif vnet_gif_0;
#endif
#endif
#define INIT_VNET_GIF(vnet) \
INIT_FROM_VNET(vnet, VNET_MOD_GIF, struct vnet_gif, vnet_gif)
#define VNET_GIF(sym) VSYM(vnet_gif, sym)
#define V_gif_softc_list VNET_GIF(gif_softc_list)
#define V_max_gif_nesting VNET_GIF(max_gif_nesting)
#define V_parallel_tunnels VNET_GIF(parallel_tunnels)
#define V_ip_gif_ttl VNET_GIF(ip_gif_ttl)
#define V_ip6_gif_hlim VNET_GIF(ip6_gif_hlim)
#endif /* _KERNEL */
#endif /* _NET_IF_GIF_H_ */
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