tcp_syncache.cache_limit is a per-cpu limit, reserve enough space for all
[dragonfly.git] / sys / net / if_atm.h
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1/* $NetBSD: if_atm.h,v 1.7 1996/11/09 23:02:27 chuck Exp $ */
2/* $FreeBSD: src/sys/net/if_atm.h,v 1.4 1999/12/29 04:38:34 peter Exp $ */
f3ed2586 3/* $DragonFly: src/sys/net/if_atm.h,v 1.6 2005/01/06 17:59:32 hsu Exp $ */
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4
5/*
6 *
7 * Copyright (c) 1996 Charles D. Cranor and Washington University.
8 * All rights reserved.
9 *
10 * Redistribution and use in source and binary forms, with or without
11 * modification, are permitted provided that the following conditions
12 * are met:
13 * 1. Redistributions of source code must retain the above copyright
14 * notice, this list of conditions and the following disclaimer.
15 * 2. Redistributions in binary form must reproduce the above copyright
16 * notice, this list of conditions and the following disclaimer in the
17 * documentation and/or other materials provided with the distribution.
18 * 3. All advertising materials mentioning features or use of this software
19 * must display the following acknowledgement:
20 * This product includes software developed by Charles D. Cranor and
21 * Washington University.
22 * 4. The name of the author may not be used to endorse or promote products
23 * derived from this software without specific prior written permission.
24 *
25 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
26 * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
27 * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
28 * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
29 * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
30 * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
31 * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
32 * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
33 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
34 * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
35 */
36
37/*
38 * net/if_atm.h
39 */
40
41#if defined(__NetBSD__) || defined(__OpenBSD__) || defined(__bsdi__)
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42#define RTALLOC1(A,B) rtalloc1((A), (B))
43#elif defined(__DragonFly__)
f3ed2586 44#define RTALLOC1(A,B) _rtlookup((A), (B), (B) ? RTL_DOCLONE : RTL_DONTCLONE)
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45#elif defined(__FreeBSD__)
46#define RTALLOC1(A,B) rtalloc1((A), (B), 0UL)
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47#endif
48
49/*
50 * pseudo header for packet transmission
51 */
52struct atm_pseudohdr {
53 u_int8_t atm_ph[4]; /* flags+VPI+VCI1(msb)+VCI2(lsb) */
54};
55
56#define ATM_PH_FLAGS(X) ((X)->atm_ph[0])
57#define ATM_PH_VPI(X) ((X)->atm_ph[1])
58#define ATM_PH_VCI(X) ((((X)->atm_ph[2]) << 8) | ((X)->atm_ph[3]))
59#define ATM_PH_SETVCI(X,V) { \
60 (X)->atm_ph[2] = ((V) >> 8) & 0xff; \
61 (X)->atm_ph[3] = ((V) & 0xff); \
62}
63
64#define ATM_PH_AAL5 0x01 /* use AAL5? (0 == aal0) */
65#define ATM_PH_LLCSNAP 0x02 /* use the LLC SNAP encoding (iff aal5) */
66
67#define ATM_PH_DRIVER7 0x40 /* reserve for driver's use */
68#define ATM_PH_DRIVER8 0x80 /* reserve for driver's use */
69
70#define ATMMTU 9180 /* ATM MTU size for IP */
71 /* XXX: could be 9188 with LLC/SNAP according
72 to comer */
73
74/* user's ioctl hook for raw atm mode */
75#define SIOCRAWATM _IOWR('a', 122, int) /* set driver's raw mode */
76
77/* atm_pseudoioctl: turns on and off RX VCIs [for internal use only!] */
78struct atm_pseudoioctl {
79 struct atm_pseudohdr aph;
80 void *rxhand;
81};
82#define SIOCATMENA _IOWR('a', 123, struct atm_pseudoioctl) /* enable */
83#define SIOCATMDIS _IOWR('a', 124, struct atm_pseudoioctl) /* disable */
84
85
86/*
87 * XXX forget all the garbage in if_llc.h and do it the easy way
88 */
89
90#define ATMLLC_HDR "\252\252\3\0\0\0"
91struct atmllc {
92 u_int8_t llchdr[6]; /* aa.aa.03.00.00.00 */
93 u_int8_t type[2]; /* "ethernet" type */
94};
95
96/* ATM_LLC macros: note type code in host byte order */
97#define ATM_LLC_TYPE(X) (((X)->type[0] << 8) | ((X)->type[1]))
98#define ATM_LLC_SETTYPE(X,V) { \
99 (X)->type[1] = ((V) >> 8) & 0xff; \
100 (X)->type[0] = ((V) & 0xff); \
101}
102
103#ifdef _KERNEL
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104void atm_ifattach (struct ifnet *);
105void atm_input (struct ifnet *, struct atm_pseudohdr *,
106 struct mbuf *, void *);
107int atm_output (struct ifnet *, struct mbuf *, struct sockaddr *,
108 struct rtentry *);
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109#endif
110