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 u_int gif_options;
75 LIST_ENTRY(gif_softc) gif_list; /* all gif's are linked */
76};
77#define GIF2IFP(sc) ((sc)->gif_ifp)
78#define GIF_LOCK_INIT(sc) mtx_init(&(sc)->gif_mtx, "gif softc", \
79 NULL, MTX_DEF)
80#define GIF_LOCK_DESTROY(sc) mtx_destroy(&(sc)->gif_mtx)
81#define GIF_LOCK(sc) mtx_lock(&(sc)->gif_mtx)
82#define GIF_UNLOCK(sc) mtx_unlock(&(sc)->gif_mtx)
83#define GIF_LOCK_ASSERT(sc) mtx_assert(&(sc)->gif_mtx, MA_OWNED)
84
85#define gif_ro gifsc_gifscr.gifscr_ro
86#ifdef INET6
87#define gif_ro6 gifsc_gifscr.gifscr_ro6
88#endif
89
90#define GIF_MTU (1280) /* Default MTU */
91#define GIF_MTU_MIN (1280) /* Minimum MTU */
92#define GIF_MTU_MAX (8192) /* Maximum MTU */
93
94#define MTAG_GIF 1080679712
95#define MTAG_GIF_CALLED 0
96
97struct etherip_header {
98#if BYTE_ORDER == LITTLE_ENDIAN
99 u_int eip_resvl:4, /* reserved */
100 eip_ver:4; /* version */
101#endif
102#if BYTE_ORDER == BIG_ENDIAN
103 u_int eip_ver:4, /* version */
104 eip_resvl:4; /* reserved */
105#endif
106 u_int8_t eip_resvh; /* reserved */
107} __packed;
108
109#define ETHERIP_VERSION 0x3
110/* mbuf adjust factor to force 32-bit alignment of IP header */
111#define ETHERIP_ALIGN 2
112
113/* Prototypes */
114void gif_input(struct mbuf *, int, struct ifnet *);
115int gif_output(struct ifnet *, struct mbuf *, struct sockaddr *,
116 struct route *);
117int gif_ioctl(struct ifnet *, u_long, caddr_t);
118int gif_set_tunnel(struct ifnet *, struct sockaddr *, struct sockaddr *);
119void gif_delete_tunnel(struct ifnet *);
120int gif_encapcheck(const struct mbuf *, int, int, void *);
121
122VNET_DECLARE(int, ip_gif_ttl);
| 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 u_int gif_options;
75 LIST_ENTRY(gif_softc) gif_list; /* all gif's are linked */
76};
77#define GIF2IFP(sc) ((sc)->gif_ifp)
78#define GIF_LOCK_INIT(sc) mtx_init(&(sc)->gif_mtx, "gif softc", \
79 NULL, MTX_DEF)
80#define GIF_LOCK_DESTROY(sc) mtx_destroy(&(sc)->gif_mtx)
81#define GIF_LOCK(sc) mtx_lock(&(sc)->gif_mtx)
82#define GIF_UNLOCK(sc) mtx_unlock(&(sc)->gif_mtx)
83#define GIF_LOCK_ASSERT(sc) mtx_assert(&(sc)->gif_mtx, MA_OWNED)
84
85#define gif_ro gifsc_gifscr.gifscr_ro
86#ifdef INET6
87#define gif_ro6 gifsc_gifscr.gifscr_ro6
88#endif
89
90#define GIF_MTU (1280) /* Default MTU */
91#define GIF_MTU_MIN (1280) /* Minimum MTU */
92#define GIF_MTU_MAX (8192) /* Maximum MTU */
93
94#define MTAG_GIF 1080679712
95#define MTAG_GIF_CALLED 0
96
97struct etherip_header {
98#if BYTE_ORDER == LITTLE_ENDIAN
99 u_int eip_resvl:4, /* reserved */
100 eip_ver:4; /* version */
101#endif
102#if BYTE_ORDER == BIG_ENDIAN
103 u_int eip_ver:4, /* version */
104 eip_resvl:4; /* reserved */
105#endif
106 u_int8_t eip_resvh; /* reserved */
107} __packed;
108
109#define ETHERIP_VERSION 0x3
110/* mbuf adjust factor to force 32-bit alignment of IP header */
111#define ETHERIP_ALIGN 2
112
113/* Prototypes */
114void gif_input(struct mbuf *, int, struct ifnet *);
115int gif_output(struct ifnet *, struct mbuf *, struct sockaddr *,
116 struct route *);
117int gif_ioctl(struct ifnet *, u_long, caddr_t);
118int gif_set_tunnel(struct ifnet *, struct sockaddr *, struct sockaddr *);
119void gif_delete_tunnel(struct ifnet *);
120int gif_encapcheck(const struct mbuf *, int, int, void *);
121
122VNET_DECLARE(int, ip_gif_ttl);
|