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 * $DragonFly: src/sys/net/netisr.h,v 1.5 2003/09/15 23:38:13 hsu Exp $ 36 */ 37 38 #ifndef _NET_NETISR_H_ 39 #define _NET_NETISR_H_ 40 41 /* 42 * The networking code runs off software interrupts. 43 * 44 * You can switch into the network by doing splnet() and return by splx(). 45 * The software interrupt level for the network is higher than the software 46 * level for the clock (so you can enter the network in routines called 47 * at timeout time). 48 */ 49 50 /* 51 * Each ``pup-level-1'' input queue has a bit in a ``netisr'' status 52 * word which is used to de-multiplex a single software 53 * interrupt used for scheduling the network code to calls 54 * on the lowest level routine of each protocol. 55 */ 56 #define NETISR_POLL 0 /* polling callback */ 57 #define NETISR_IP 2 /* same as AF_INET */ 58 #define NETISR_NS 6 /* same as AF_NS */ 59 #define NETISR_AARP 15 /* Appletalk ARP */ 60 #define NETISR_ATALK2 16 /* Appletalk phase 2 */ 61 #define NETISR_ATALK1 17 /* Appletalk phase 1 */ 62 #define NETISR_ARP 18 /* same as AF_LINK */ 63 #define NETISR_IPX 23 /* same as AF_IPX */ 64 #define NETISR_USB 25 /* USB soft interrupt */ 65 #define NETISR_PPP 27 /* PPP soft interrupt */ 66 #define NETISR_IPV6 28 /* same as AF_INET6 */ 67 #define NETISR_NATM 29 /* same as AF_NATM */ 68 #define NETISR_NETGRAPH 30 /* same as AF_NETGRAPH */ 69 #define NETISR_POLLMORE 31 /* check if we need more polling */ 70 71 #define NETISR_MAX 32 72 73 74 #ifndef LOCORE 75 #ifdef _KERNEL 76 extern int isrmask; 77 78 static __inline void 79 schednetisr(int isrnum) 80 { 81 atomic_set_int(&isrmask, 1 << isrnum); 82 setsoftnet(); 83 } 84 85 struct mbuf; 86 struct ifqueue; 87 88 typedef void (*netisr_fn_t)(struct mbuf *); 89 90 /* 91 * This structure will change to use message ports instead of struct ifqueue. 92 * XXX JH 93 */ 94 struct netisr { 95 netisr_fn_t ni_handler; 96 struct ifqueue *ni_queue; 97 }; 98 99 void netisr_dispatch(int, struct mbuf *); 100 int netisr_queue(int, struct mbuf *); 101 int netisr_register(int, netisr_fn_t, struct ifqueue *); 102 int netisr_unregister(int); 103 104 #endif 105 #endif 106 107 #endif 108