Initial import from FreeBSD RELENG_4:
[dragonfly.git] / sys / net / netisr.h
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1/*
2 * Copyright (c) 1980, 1986, 1989, 1993
3 * The Regents of the University of California. All rights reserved.
4 *
5 * Redistribution and use in source and binary forms, with or without
6 * modification, are permitted provided that the following conditions
7 * are met:
8 * 1. Redistributions of source code must retain the above copyright
9 * notice, this list of conditions and the following disclaimer.
10 * 2. Redistributions in binary form must reproduce the above copyright
11 * notice, this list of conditions and the following disclaimer in the
12 * documentation and/or other materials provided with the distribution.
13 * 3. All advertising materials mentioning features or use of this software
14 * must display the following acknowledgement:
15 * This product includes software developed by the University of
16 * California, Berkeley and its contributors.
17 * 4. Neither the name of the University nor the names of its contributors
18 * may be used to endorse or promote products derived from this software
19 * without specific prior written permission.
20 *
21 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
22 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
23 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
24 * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
25 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
26 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
27 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
28 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
29 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
30 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
31 * SUCH DAMAGE.
32 *
33 * @(#)netisr.h 8.1 (Berkeley) 6/10/93
34 * $FreeBSD: src/sys/net/netisr.h,v 1.21.2.5 2002/02/09 23:02:39 luigi Exp $
35 */
36
37#ifndef _NET_NETISR_H_
38#define _NET_NETISR_H_
39
40/*
41 * The networking code runs off software interrupts.
42 *
43 * You can switch into the network by doing splnet() and return by splx().
44 * The software interrupt level for the network is higher than the software
45 * level for the clock (so you can enter the network in routines called
46 * at timeout time).
47 */
48
49/*
50 * Each ``pup-level-1'' input queue has a bit in a ``netisr'' status
51 * word which is used to de-multiplex a single software
52 * interrupt used for scheduling the network code to calls
53 * on the lowest level routine of each protocol.
54 */
55#define NETISR_POLL 0 /* polling callback */
56#define NETISR_IP 2 /* same as AF_INET */
57#define NETISR_NS 6 /* same as AF_NS */
58#define NETISR_ATALK 16 /* same as AF_APPLETALK */
59#define NETISR_ARP 18 /* same as AF_LINK */
60#define NETISR_IPX 23 /* same as AF_IPX */
61#define NETISR_USB 25 /* USB soft interrupt */
62#define NETISR_PPP 27 /* PPP soft interrupt */
63#define NETISR_IPV6 28 /* same as AF_INET6 */
64#define NETISR_NATM 29 /* same as AF_NATM */
65#define NETISR_NETGRAPH 30 /* same as AF_NETGRAPH */
66#define NETISR_POLLMORE 31 /* check if we need more polling */
67
68
69#ifndef LOCORE
70#ifdef _KERNEL
71
72extern volatile unsigned int netisr; /* scheduling bits for network */
73#define schednetisr(anisr) { netisr |= 1 << (anisr); setsoftnet(); }
74
75typedef void netisr_t __P((void));
76
77int register_netisr __P((int, netisr_t *));
78int unregister_netisr __P((int));
79
80#endif
81#endif
82
83#endif