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50 lines
1.9 KiB
C
50 lines
1.9 KiB
C
/*
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* Copyright (c) 1980, 1986 Regents of the University of California.
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* All rights reserved.
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*
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* Redistribution and use in source and binary forms are permitted
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* provided that the above copyright notice and this paragraph are
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* duplicated in all such forms and that any documentation,
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* advertising materials, and other materials related to such
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* distribution and use acknowledge that the software was developed
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* by the University of California, Berkeley. The name of the
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* University may not be used to endorse or promote products derived
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* from this software without specific prior written permission.
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* THIS SOFTWARE IS PROVIDED ``AS IS'' AND WITHOUT ANY EXPRESS OR
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* IMPLIED WARRANTIES, INCLUDING, WITHOUT LIMITATION, THE IMPLIED
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* WARRANTIES OF MERCHANTIBILITY AND FITNESS FOR A PARTICULAR PURPOSE.
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*
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* @(#)netisr.h 7.4 (Berkeley) 6/27/88
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*/
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/*
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* The networking code runs off software interrupts.
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*
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* You can switch into the network by doing splnet() and return by splx().
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* The software interrupt level for the network is higher than the software
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* level for the clock (so you can enter the network in routines called
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* at timeout time).
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*/
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#if defined(vax) || defined(tahoe)
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#define setsoftnet() mtpr(SIRR, 12)
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#endif
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/*
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* Each ``pup-level-1'' input queue has a bit in a ``netisr'' status
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* word which is used to de-multiplex a single software
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* interrupt used for scheduling the network code to calls
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* on the lowest level routine of each protocol.
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*/
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#define NETISR_RAW 0 /* same as AF_UNSPEC */
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#define NETISR_IP 2 /* same as AF_INET */
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#define NETISR_IMP 3 /* same as AF_IMPLINK */
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#define NETISR_NS 6 /* same as AF_NS */
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#define schednetisr(anisr) { netisr |= 1<<(anisr); setsoftnet(); }
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#ifndef LOCORE
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#ifdef _KERNEL
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int netisr; /* scheduling bits for network */
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#endif
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#endif
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