1 /* $OpenBSD: if_atm.h,v 1.12 2006/06/17 10:22:06 henning 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 #ifndef _NET_IF_ATM_H_
39 #define _NET_IF_ATM_H_
40
41 #define RTALLOC1(A,B) rtalloc1((A),(B), 0)
42
43 /*
44 * pseudo header for packet transmission
45 */
46
47 struct atm_pseudohdr {
48 u_int8_t atm_ph[4]; /* flags+VPI+VCI1(msb)+VCI2(lsb) */
49 };
50
51 #define ATM_PH_FLAGS(X) ((X)->atm_ph[0])
52 #define ATM_PH_VPI(X) ((X)->atm_ph[1])
53 #define ATM_PH_VCI(X) ((((X)->atm_ph[2]) << 8) | ((X)->atm_ph[3]))
54 #define ATM_PH_SETVCI(X,V) { \
55 (X)->atm_ph[2] = ((V) >> 8) & 0xff; \
56 (X)->atm_ph[3] = ((V) & 0xff); \
57 }
58
59 #define ATM_PH_AAL5 0x01 /* use AAL5? (0 == aal0) */
60 #define ATM_PH_LLCSNAP 0x02 /* use the LLC SNAP encoding (iff aal5) */
61
62 #define ATM_PH_DRIVER7 0x40 /* reserve for driver's use */
63 #define ATM_PH_DRIVER8 0x80 /* reserve for driver's use */
64
65 #define ATMMTU 9180 /* ATM MTU size for IP */
66 /* XXX: could be 9188 with LLC/SNAP according
67 to comer */
68
69 /* user's ioctl hook for raw atm mode */
70 #define SIOCRAWATM _IOWR('a', 122, int) /* set driver's raw mode */
71
72 /* atm_pseudoioctl: turns on and off RX VCIs [for internal use only!] */
73 struct atm_pseudoioctl {
74 struct atm_pseudohdr aph;
75 void *rxhand;
76 };
77 #define SIOCATMENA _IOWR('a', 123, struct atm_pseudoioctl) /* enable */
78 #define SIOCATMDIS _IOWR('a', 124, struct atm_pseudoioctl) /* disable */
79
80 /*
81 * XXX forget all the garbage in if_llc.h and do it the easy way
82 */
83
84 #define ATMLLC_HDR "\252\252\3\0\0\0"
85 struct atmllc {
86 u_int8_t llchdr[6]; /* aa.aa.03.00.00.00 */
87 u_int8_t type[2]; /* "ethernet" type */
88 };
89
90 /* ATM_LLC macros: note type code in host byte order */
91 #define ATM_LLC_TYPE(X) (((X)->type[0] << 8) | ((X)->type[1]))
92 #define ATM_LLC_SETTYPE(X,V) { \
93 (X)->type[0] = ((V) >> 8) & 0xff; \
94 (X)->type[1] = ((V) & 0xff); \
95 }
96
97 #ifdef _KERNEL
98 void atm_ifattach(struct ifnet *);
99 void atm_input(struct ifnet *, struct atm_pseudohdr *,
100 struct mbuf *, void *);
101 int atm_output(struct ifnet *, struct mbuf *, struct sockaddr *,
102 struct rtentry *);
103 #endif /* _KERNEL */
104 #endif /* _NET_IF_ATM_H_ */