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/5.1/sys/net/netisr.h 111926 2003-03-05 19:24:24Z peter $
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_AARP 15 /* Appletalk ARP */
58 #define NETISR_ATALK2 16 /* Appletalk phase 2 */
59 #define NETISR_ATALK1 17 /* Appletalk phase 1 */
60 #define NETISR_ARP 18 /* same as AF_LINK */
61 #define NETISR_IPX 23 /* same as AF_IPX */
62 #define NETISR_USB 25 /* USB soft interrupt */
63 #define NETISR_PPP 26 /* PPP soft interrupt */
64 #define NETISR_IPV6 27
65 #define NETISR_NATM 28
66 #define NETISR_ATM 29
67 #define NETISR_NETGRAPH 30
68 #define NETISR_POLLMORE 31 /* polling callback, must be last */
69
70
71 #ifndef LOCORE
72 #ifdef _KERNEL
73
74 void legacy_setsoftnet(void);
75
76 extern volatile unsigned int netisr; /* scheduling bits for network */
77 #define schednetisr(anisr) do { \
78 atomic_set_rel_int(&netisr, 1 << (anisr)); \
79 legacy_setsoftnet(); \
80 } while (0)
81 /* used to atomically schedule multiple netisrs */
82 #define schednetisrbits(isrbits) do { \
83 atomic_set_rel_int(&netisr, isrbits); \
84 legacy_setsoftnet(); \
85 } while (0)
86
87 struct ifqueue;
88 struct mbuf;
89
90 typedef void netisr_t (struct mbuf *);
91
92 void netisr_dispatch(int, struct mbuf *);
93 int netisr_queue(int, struct mbuf *);
94 void netisr_register(int, netisr_t *, struct ifqueue *);
95 void netisr_unregister(int);
96
97 #endif
98 #endif
99
100 #endif
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