if_atm.h revision 46695 
1/*      $NetBSD: if_atm.h,v 1.7 1996/11/09 23:02:27 chuck Exp $       */
2
3/*
4 *
5 * Copyright (c) 1996 Charles D. Cranor and Washington University.
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. All advertising materials mentioning features or use of this software
17 *    must display the following acknowledgement:
18 *      This product includes software developed by Charles D. Cranor and
19 *	Washington University.
20 * 4. The name of the author may not be used to endorse or promote products
21 *    derived from this software without specific prior written permission.
22 *
23 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
24 * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
25 * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
26 * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
27 * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
28 * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
29 * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
30 * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
31 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
32 * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
33 */
34
35/*
36 * net/if_atm.h
37 */
38
39#if (defined(__FreeBSD__) || defined(__bsdi__)) && defined(KERNEL)
40#ifndef _KERNEL
41#define _KERNEL
42#endif
43#endif /* freebsd doesn't define _KERNEL */
44
45#if defined(__NetBSD__) || defined(__OpenBSD__) || defined(__bsdi__)
46#define RTALLOC1(A,B)		rtalloc1((A),(B))
47#elif defined(__FreeBSD__)
48#define RTALLOC1(A,B)		rtalloc1((A),(B),0UL)
49#endif
50
51/*
52 * pseudo header for packet transmission
53 */
54struct atm_pseudohdr {
55  u_int8_t atm_ph[4];	/* flags+VPI+VCI1(msb)+VCI2(lsb) */
56};
57
58#define ATM_PH_FLAGS(X)	((X)->atm_ph[0])
59#define ATM_PH_VPI(X)	((X)->atm_ph[1])
60#define ATM_PH_VCI(X)	((((X)->atm_ph[2]) << 8) | ((X)->atm_ph[3]))
61#define ATM_PH_SETVCI(X,V) { \
62	(X)->atm_ph[2] = ((V) >> 8) & 0xff; \
63	(X)->atm_ph[3] = ((V) & 0xff); \
64}
65
66#define ATM_PH_AAL5    0x01	/* use AAL5? (0 == aal0) */
67#define ATM_PH_LLCSNAP 0x02	/* use the LLC SNAP encoding (iff aal5) */
68
69#define ATM_PH_DRIVER7  0x40	/* reserve for driver's use */
70#define ATM_PH_DRIVER8  0x80	/* reserve for driver's use */
71
72#define ATMMTU		9180	/* ATM MTU size for IP */
73				/* XXX: could be 9188 with LLC/SNAP according
74					to comer */
75
76/* user's ioctl hook for raw atm mode */
77#define SIOCRAWATM	_IOWR('a', 122, int)	/* set driver's raw mode */
78
79/* atm_pseudoioctl: turns on and off RX VCIs  [for internal use only!] */
80struct atm_pseudoioctl {
81  struct atm_pseudohdr aph;
82  void *rxhand;
83};
84#define SIOCATMENA	_IOWR('a', 123, struct atm_pseudoioctl) /* enable */
85#define SIOCATMDIS	_IOWR('a', 124, struct atm_pseudoioctl) /* disable */
86
87
88/*
89 * XXX forget all the garbage in if_llc.h and do it the easy way
90 */
91
92#define ATMLLC_HDR "\252\252\3\0\0\0"
93struct atmllc {
94  u_int8_t llchdr[6];	/* aa.aa.03.00.00.00 */
95  u_int8_t type[2];	/* "ethernet" type */
96};
97
98/* ATM_LLC macros: note type code in host byte order */
99#define ATM_LLC_TYPE(X) (((X)->type[0] << 8) | ((X)->type[1]))
100#define ATM_LLC_SETTYPE(X,V) { \
101	(X)->type[1] = ((V) >> 8) & 0xff; \
102	(X)->type[0] = ((V) & 0xff); \
103}
104
105#ifdef _KERNEL
106void	atm_ifattach __P((struct ifnet *));
107void	atm_input __P((struct ifnet *, struct atm_pseudohdr *,
108		struct mbuf *, void *));
109int	atm_output __P((struct ifnet *, struct mbuf *, struct sockaddr *,
110		struct rtentry *));
111#endif
112
113