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Diffstat (limited to 'sys/net/netisr.h')
-rw-r--r-- | sys/net/netisr.h | 87 |
1 files changed, 87 insertions, 0 deletions
diff --git a/sys/net/netisr.h b/sys/net/netisr.h new file mode 100644 index 0000000..e2e4653 --- /dev/null +++ b/sys/net/netisr.h @@ -0,0 +1,87 @@ +/* + * Copyright (c) 1980, 1986, 1989, 1993 + * The Regents of the University of California. All rights reserved. + * + * Redistribution and use in source and binary forms, with or without + * modification, are permitted provided that the following conditions + * are met: + * 1. Redistributions of source code must retain the above copyright + * notice, this list of conditions and the following disclaimer. + * 2. Redistributions in binary form must reproduce the above copyright + * notice, this list of conditions and the following disclaimer in the + * documentation and/or other materials provided with the distribution. + * 3. All advertising materials mentioning features or use of this software + * must display the following acknowledgement: + * This product includes software developed by the University of + * California, Berkeley and its contributors. + * 4. Neither the name of the University nor the names of its contributors + * may be used to endorse or promote products derived from this software + * without specific prior written permission. + * + * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND + * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE + * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE + * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE + * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL + * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS + * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) + * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT + * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY + * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF + * SUCH DAMAGE. + * + * @(#)netisr.h 8.1 (Berkeley) 6/10/93 + */ + +/* + * The networking code runs off software interrupts. + * + * You can switch into the network by doing splnet() and return by splx(). + * The software interrupt level for the network is higher than the software + * level for the clock (so you can enter the network in routines called + * at timeout time). + */ +#if defined(vax) || defined(tahoe) +#define setsoftnet() mtpr(SIRR, 12) +#endif + +/* + * Each ``pup-level-1'' input queue has a bit in a ``netisr'' status + * word which is used to de-multiplex a single software + * interrupt used for scheduling the network code to calls + * on the lowest level routine of each protocol. + */ +#define NETISR_RAW 0 /* same as AF_UNSPEC */ +#define NETISR_IP 2 /* same as AF_INET */ +#define NETISR_IMP 3 /* same as AF_IMPLINK */ +#define NETISR_NS 6 /* same as AF_NS */ +#define NETISR_ISO 7 /* same as AF_ISO */ +#define NETISR_CCITT 10 /* same as AF_CCITT */ +#define NETISR_ARP 18 /* same as AF_LINK */ + +#define schednetisr(anisr) { netisr |= 1<<(anisr); setsoftnet(); } + +#ifdef i386 +/* XXX Temporary -- soon to vanish - wfj */ +#define NETISR_SCLK 11 /* softclock */ +#define NETISR_AST 12 /* ast -- resched */ + +#undef schednetisr +#define schednetisr(anisr) {\ + if(netisr == 0) { \ + softem++; \ + } \ + netisr |= 1<<(anisr); \ +} +#ifndef LOCORE +#ifdef KERNEL +int softem; +#endif +#endif +#endif /* i386 */ + +#ifndef LOCORE +#ifdef KERNEL +int netisr; /* scheduling bits for network */ +#endif +#endif |