1/* $NetBSD: if_gre.h,v 1.13 2003/11/10 08:51:52 wiz Exp $ */
| 1/* $NetBSD: if_gre.h,v 1.13 2003/11/10 08:51:52 wiz Exp $ */
|
2/* $FreeBSD: head/sys/net/if_gre.h 123992 2003-12-30 11:41:43Z sobomax $ */
| 2/* $FreeBSD: head/sys/net/if_gre.h 125020 2004-01-26 12:21:59Z sobomax $ */
|
3
4/*
5 * Copyright (c) 1998 The NetBSD Foundation, Inc.
6 * All rights reserved
7 *
8 * This code is derived from software contributed to The NetBSD Foundation
9 * by Heiko W.Rupp <hwr@pilhuhn.de>
10 *
11 * Redistribution and use in source and binary forms, with or without
12 * modification, are permitted provided that the following conditions
13 * are met:
14 * 1. Redistributions of source code must retain the above copyright
15 * notice, this list of conditions and the following disclaimer.
16 * 2. Redistributions in binary form must reproduce the above copyright
17 * notice, this list of conditions and the following disclaimer in the
18 * documentation and/or other materials provided with the distribution.
19 * 3. All advertising materials mentioning features or use of this software
20 * must display the following acknowledgement:
21 * This product includes software developed by the NetBSD
22 * Foundation, Inc. and its contributors.
23 * 4. Neither the name of The NetBSD Foundation nor the names of its
24 * contributors may be used to endorse or promote products derived
25 * from this software without specific prior written permission.
| 3
4/*
5 * Copyright (c) 1998 The NetBSD Foundation, Inc.
6 * All rights reserved
7 *
8 * This code is derived from software contributed to The NetBSD Foundation
9 * by Heiko W.Rupp <hwr@pilhuhn.de>
10 *
11 * Redistribution and use in source and binary forms, with or without
12 * modification, are permitted provided that the following conditions
13 * are met:
14 * 1. Redistributions of source code must retain the above copyright
15 * notice, this list of conditions and the following disclaimer.
16 * 2. Redistributions in binary form must reproduce the above copyright
17 * notice, this list of conditions and the following disclaimer in the
18 * documentation and/or other materials provided with the distribution.
19 * 3. All advertising materials mentioning features or use of this software
20 * must display the following acknowledgement:
21 * This product includes software developed by the NetBSD
22 * Foundation, Inc. and its contributors.
23 * 4. Neither the name of The NetBSD Foundation nor the names of its
24 * contributors may be used to endorse or promote products derived
25 * from this software without specific prior written permission.
|
26 *
| 26 *
|
27 * THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS
28 * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED
29 * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
30 * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS
31 * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
32 * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
33 * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
34 * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
35 * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
36 * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
37 * POSSIBILITY OF SUCH DAMAGE.
38 */
39
40#ifndef _NET_IF_GRE_H
41#define _NET_IF_GRE_H
42
43#include <sys/ioccom.h>
44#ifdef _KERNEL
45#include <sys/queue.h>
46
47struct gre_softc {
48 struct ifnet sc_if;
49 LIST_ENTRY(gre_softc) sc_list;
50 int gre_unit;
51 int gre_flags;
52 struct in_addr g_src; /* source address of gre packets */
53 struct in_addr g_dst; /* destination address of gre packets */
54 struct route route; /* routing entry that determines, where a
55 encapsulated packet should go */
56 u_char g_proto; /* protocol of encapsulator */
57
58 const struct encaptab *encap; /* encapsulation cookie */
59
60 int called; /* infinite recursion preventer */
| 27 * THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS
28 * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED
29 * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
30 * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS
31 * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
32 * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
33 * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
34 * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
35 * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
36 * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
37 * POSSIBILITY OF SUCH DAMAGE.
38 */
39
40#ifndef _NET_IF_GRE_H
41#define _NET_IF_GRE_H
42
43#include <sys/ioccom.h>
44#ifdef _KERNEL
45#include <sys/queue.h>
46
47struct gre_softc {
48 struct ifnet sc_if;
49 LIST_ENTRY(gre_softc) sc_list;
50 int gre_unit;
51 int gre_flags;
52 struct in_addr g_src; /* source address of gre packets */
53 struct in_addr g_dst; /* destination address of gre packets */
54 struct route route; /* routing entry that determines, where a
55 encapsulated packet should go */
56 u_char g_proto; /* protocol of encapsulator */
57
58 const struct encaptab *encap; /* encapsulation cookie */
59
60 int called; /* infinite recursion preventer */
|
61};
| 61};
|
62
63
64struct gre_h {
65 u_int16_t flags; /* GRE flags */
| 62
63
64struct gre_h {
65 u_int16_t flags; /* GRE flags */
|
66 u_int16_t ptype; /* protocol type of payload typically
| 66 u_int16_t ptype; /* protocol type of payload typically
|
67 Ether protocol type*/
| 67 Ether protocol type*/
|
68/*
69 * from here on: fields are optional, presence indicated by flags
| 68/*
69 * from here on: fields are optional, presence indicated by flags
|
70 *
71 u_int_16 checksum checksum (one-complements of GRE header
72 and payload
73 Present if (ck_pres | rt_pres == 1).
74 Valid if (ck_pres == 1).
75 u_int_16 offset offset from start of routing filed to
76 first octet of active SRE (see below).
77 Present if (ck_pres | rt_pres == 1).
78 Valid if (rt_pres == 1).
79 u_int_32 key inserted by encapsulator e.g. for
80 authentication
81 Present if (key_pres ==1 ).
82 u_int_32 seq_num Sequence number to allow for packet order
83 Present if (seq_pres ==1 ).
84 struct gre_sre[] routing Routing fileds (see below)
85 Present if (rt_pres == 1)
86 */
87} __packed;
88
89struct greip {
90 struct ip gi_i;
91 struct gre_h gi_g;
92} __packed;
93
94#define gi_pr gi_i.ip_p
95#define gi_len gi_i.ip_len
96#define gi_src gi_i.ip_src
97#define gi_dst gi_i.ip_dst
98#define gi_ptype gi_g.ptype
99#define gi_flags gi_g.flags
100
101#define GRE_CP 0x8000 /* Checksum Present */
102#define GRE_RP 0x4000 /* Routing Present */
103#define GRE_KP 0x2000 /* Key Present */
104#define GRE_SP 0x1000 /* Sequence Present */
105#define GRE_SS 0x0800 /* Strict Source Route */
106
107/*
108 * CISCO uses special type for GRE tunnel created as part of WCCP
109 * connection, while in fact those packets are just IPv4 encapsulated
110 * into GRE.
111 */
112#define WCCP_PROTOCOL_TYPE 0x883E
113
114/*
115 * gre_sre defines a Source route Entry. These are needed if packets
116 * should be routed over more than one tunnel hop by hop
117 */
118struct gre_sre {
119 u_int16_t sre_family; /* address family */
120 u_char sre_offset; /* offset to first octet of active entry */
| 70 *
71 u_int_16 checksum checksum (one-complements of GRE header
72 and payload
73 Present if (ck_pres | rt_pres == 1).
74 Valid if (ck_pres == 1).
75 u_int_16 offset offset from start of routing filed to
76 first octet of active SRE (see below).
77 Present if (ck_pres | rt_pres == 1).
78 Valid if (rt_pres == 1).
79 u_int_32 key inserted by encapsulator e.g. for
80 authentication
81 Present if (key_pres ==1 ).
82 u_int_32 seq_num Sequence number to allow for packet order
83 Present if (seq_pres ==1 ).
84 struct gre_sre[] routing Routing fileds (see below)
85 Present if (rt_pres == 1)
86 */
87} __packed;
88
89struct greip {
90 struct ip gi_i;
91 struct gre_h gi_g;
92} __packed;
93
94#define gi_pr gi_i.ip_p
95#define gi_len gi_i.ip_len
96#define gi_src gi_i.ip_src
97#define gi_dst gi_i.ip_dst
98#define gi_ptype gi_g.ptype
99#define gi_flags gi_g.flags
100
101#define GRE_CP 0x8000 /* Checksum Present */
102#define GRE_RP 0x4000 /* Routing Present */
103#define GRE_KP 0x2000 /* Key Present */
104#define GRE_SP 0x1000 /* Sequence Present */
105#define GRE_SS 0x0800 /* Strict Source Route */
106
107/*
108 * CISCO uses special type for GRE tunnel created as part of WCCP
109 * connection, while in fact those packets are just IPv4 encapsulated
110 * into GRE.
111 */
112#define WCCP_PROTOCOL_TYPE 0x883E
113
114/*
115 * gre_sre defines a Source route Entry. These are needed if packets
116 * should be routed over more than one tunnel hop by hop
117 */
118struct gre_sre {
119 u_int16_t sre_family; /* address family */
120 u_char sre_offset; /* offset to first octet of active entry */
|
121 u_char sre_length; /* number of octets in the SRE.
| 121 u_char sre_length; /* number of octets in the SRE.
|
122 sre_lengthl==0 -> last entry. */
123 u_char *sre_rtinfo; /* the routing information */
124};
125
126struct greioctl {
127 int unit;
128 struct in_addr addr;
129};
130
131/* for mobile encaps */
132
133struct mobile_h {
134 u_int16_t proto; /* protocol and S-bit */
135 u_int16_t hcrc; /* header checksum */
136 u_int32_t odst; /* original destination address */
137 u_int32_t osrc; /* original source addr, if S-bit set */
138} __packed;
139
140struct mobip_h {
141 struct ip mi;
142 struct mobile_h mh;
143} __packed;
144
145
146#define MOB_H_SIZ_S (sizeof(struct mobile_h) - sizeof(u_int32_t))
147#define MOB_H_SIZ_L (sizeof(struct mobile_h))
148#define MOB_H_SBIT 0x0080
149
150#define GRE_TTL 30
151
152#endif /* _KERNEL */
153
| 122 sre_lengthl==0 -> last entry. */
123 u_char *sre_rtinfo; /* the routing information */
124};
125
126struct greioctl {
127 int unit;
128 struct in_addr addr;
129};
130
131/* for mobile encaps */
132
133struct mobile_h {
134 u_int16_t proto; /* protocol and S-bit */
135 u_int16_t hcrc; /* header checksum */
136 u_int32_t odst; /* original destination address */
137 u_int32_t osrc; /* original source addr, if S-bit set */
138} __packed;
139
140struct mobip_h {
141 struct ip mi;
142 struct mobile_h mh;
143} __packed;
144
145
146#define MOB_H_SIZ_S (sizeof(struct mobile_h) - sizeof(u_int32_t))
147#define MOB_H_SIZ_L (sizeof(struct mobile_h))
148#define MOB_H_SBIT 0x0080
149
150#define GRE_TTL 30
151
152#endif /* _KERNEL */
153
|
154/*
155 * ioctls needed to manipulate the interface
| 154/*
155 * ioctls needed to manipulate the interface
|
156 */
157
158#define GRESADDRS _IOW('i', 101, struct ifreq)
| 156 */
157
158#define GRESADDRS _IOW('i', 101, struct ifreq)
|
159#define GRESADDRD _IOW('i', 102, struct ifreq)
| 159#define GRESADDRD _IOW('i', 102, struct ifreq)
|
160#define GREGADDRS _IOWR('i', 103, struct ifreq)
161#define GREGADDRD _IOWR('i', 104, struct ifreq)
162#define GRESPROTO _IOW('i' , 105, struct ifreq)
163#define GREGPROTO _IOWR('i', 106, struct ifreq)
164
165#ifdef _KERNEL
166LIST_HEAD(gre_softc_head, gre_softc);
167extern struct gre_softc_head gre_softc_list;
168
169u_int16_t gre_in_cksum(u_int16_t *, u_int);
170#endif /* _KERNEL */
171
172#endif
| 160#define GREGADDRS _IOWR('i', 103, struct ifreq)
161#define GREGADDRD _IOWR('i', 104, struct ifreq)
162#define GRESPROTO _IOW('i' , 105, struct ifreq)
163#define GREGPROTO _IOWR('i', 106, struct ifreq)
164
165#ifdef _KERNEL
166LIST_HEAD(gre_softc_head, gre_softc);
167extern struct gre_softc_head gre_softc_list;
168
169u_int16_t gre_in_cksum(u_int16_t *, u_int);
170#endif /* _KERNEL */
171
172#endif
|