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- /* $KAME: if_gif.h,v 1.17 2000/09/11 11:36:41 sumikawa Exp $ */
- /*-
- * SPDX-License-Identifier: BSD-3-Clause
- *
- * Copyright (C) 1995, 1996, 1997, and 1998 WIDE Project.
- * Copyright (c) 2018 Andrey V. Elsukov <ae@FreeBSD.org>
- * 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.
- */
- #ifndef _NET_IF_GIF_H_
- #define _NET_IF_GIF_H_
- #ifdef _KERNEL
- struct ip;
- struct ip6_hdr;
- 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;
- int gif_family;
- int gif_flags;
- u_int gif_fibnum;
- u_int gif_options;
- void *gif_netgraph; /* netgraph node info */
- union {
- void *hdr;
- struct ip *iphdr;
- struct ip6_hdr *ip6hdr;
- } gif_uhdr;
- CK_LIST_ENTRY(gif_softc) chain;
- CK_LIST_ENTRY(gif_softc) srchash;
- };
- CK_LIST_HEAD(gif_list, gif_softc);
- MALLOC_DECLARE(M_GIF);
- #ifndef GIF_HASH_SIZE
- #define GIF_HASH_SIZE (1 << 4)
- #endif
- #define GIF2IFP(sc) ((sc)->gif_ifp)
- #define gif_iphdr gif_uhdr.iphdr
- #define gif_hdr gif_uhdr.hdr
- #define gif_ip6hdr gif_uhdr.ip6hdr
- #define GIF_MTU (1280) /* Default MTU */
- #define GIF_MTU_MIN (1280) /* Minimum MTU */
- #define GIF_MTU_MAX (8192) /* Maximum MTU */
- struct etherip_header {
- #if BYTE_ORDER == LITTLE_ENDIAN
- u_int eip_resvl:4, /* reserved */
- eip_ver:4; /* version */
- #endif
- #if BYTE_ORDER == BIG_ENDIAN
- u_int eip_ver:4, /* version */
- eip_resvl:4; /* reserved */
- #endif
- u_int8_t eip_resvh; /* reserved */
- } __packed;
- #define ETHERIP_VERSION 0x3
- #define GIF_WAIT() epoch_wait_preempt(net_epoch_preempt)
- /* Prototypes */
- struct gif_list *gif_hashinit(void);
- void gif_hashdestroy(struct gif_list *);
- void gif_input(struct mbuf *, struct ifnet *, int, uint8_t);
- int gif_output(struct ifnet *, struct mbuf *, const struct sockaddr *,
- struct route *);
- void in_gif_init(void);
- void in_gif_uninit(void);
- int in_gif_output(struct ifnet *, struct mbuf *, int, uint8_t);
- int in_gif_ioctl(struct gif_softc *, u_long, caddr_t);
- int in_gif_setopts(struct gif_softc *, u_int);
- void in6_gif_init(void);
- void in6_gif_uninit(void);
- int in6_gif_output(struct ifnet *, struct mbuf *, int, uint8_t);
- int in6_gif_ioctl(struct gif_softc *, u_long, caddr_t);
- int in6_gif_setopts(struct gif_softc *, u_int);
- #endif /* _KERNEL */
- #define GIFGOPTS _IOWR('i', 150, struct ifreq)
- #define GIFSOPTS _IOW('i', 151, struct ifreq)
- #define GIF_IGNORE_SOURCE 0x0002
- #define GIF_OPTMASK (GIF_IGNORE_SOURCE)
- #endif /* _NET_IF_GIF_H_ */
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