FreeBSD/Linux Kernel Cross Reference
sys/net/netisr.h
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: releng/5.0/sys/net/netisr.h 100763 2002-07-27 19:53:02Z rwatson $
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, must be first */
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_ATM 30 /* same as AF_ATM */
66 #define NETISR_NETGRAPH 31 /* same as AF_NETGRAPH */
67
68
69 #ifndef LOCORE
70 #ifdef _KERNEL
71
72 void legacy_setsoftnet(void);
73
74 extern volatile unsigned int netisr; /* scheduling bits for network */
75 extern void (*netisrs[32])(void);
76 #define schednetisr(anisr) do { \
77 atomic_set_rel_int(&netisr, 1 << (anisr)); \
78 legacy_setsoftnet(); \
79 } while (0)
80
81 typedef void netisr_t(void);
82
83 int register_netisr(int, netisr_t *);
84 int unregister_netisr(int);
85
86 #endif
87 #endif
88
89 #endif
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