1 /* 2 * Copyright (c) 1980, 1986, 1989 Regents of the University of California. 3 * 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 7.8 (Berkeley) 5/7/91 34 */ 35 36 /* 37 * The networking code runs off software interrupts. 38 * 39 * You can switch into the network by doing splnet() and return by splx(). 40 * The software interrupt level for the network is higher than the software 41 * level for the clock (so you can enter the network in routines called 42 * at timeout time). 43 */ 44 #if defined(vax) || defined(tahoe) 45 #define setsoftnet() mtpr(SIRR, 12) 46 #endif 47 48 /* 49 * Each ``pup-level-1'' input queue has a bit in a ``netisr'' status 50 * word which is used to de-multiplex a single software 51 * interrupt used for scheduling the network code to calls 52 * on the lowest level routine of each protocol. 53 */ 54 #define NETISR_RAW 0 /* same as AF_UNSPEC */ 55 #define NETISR_IP 2 /* same as AF_INET */ 56 #define NETISR_IMP 3 /* same as AF_IMPLINK */ 57 #define NETISR_NS 6 /* same as AF_NS */ 58 #define NETISR_ISO 7 /* same as AF_ISO */ 59 #define NETISR_CCITT 10 /* same as AF_CCITT */ 60 61 #define schednetisr(anisr) { netisr |= 1<<(anisr); setsoftnet(); } 62 63 #ifndef LOCORE 64 #ifdef KERNEL 65 int netisr; /* scheduling bits for network */ 66 #endif 67 #endif 68