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Annotation of 43BSDTahoe/sys/net/netisr.h, revision 1.1

1.1     ! root        1: /*
        !             2:  * Copyright (c) 1980, 1986 Regents of the University of California.
        !             3:  * All rights reserved.
        !             4:  *
        !             5:  * Redistribution and use in source and binary forms are permitted
        !             6:  * provided that the above copyright notice and this paragraph are
        !             7:  * duplicated in all such forms and that any documentation,
        !             8:  * advertising materials, and other materials related to such
        !             9:  * distribution and use acknowledge that the software was developed
        !            10:  * by the University of California, Berkeley.  The name of the
        !            11:  * University may not be used to endorse or promote products derived
        !            12:  * from this software without specific prior written permission.
        !            13:  * THIS SOFTWARE IS PROVIDED ``AS IS'' AND WITHOUT ANY EXPRESS OR
        !            14:  * IMPLIED WARRANTIES, INCLUDING, WITHOUT LIMITATION, THE IMPLIED
        !            15:  * WARRANTIES OF MERCHANTIBILITY AND FITNESS FOR A PARTICULAR PURPOSE.
        !            16:  *
        !            17:  *     @(#)netisr.h    7.4 (Berkeley) 6/27/88
        !            18:  */
        !            19: 
        !            20: /*
        !            21:  * The networking code runs off software interrupts.
        !            22:  *
        !            23:  * You can switch into the network by doing splnet() and return by splx().
        !            24:  * The software interrupt level for the network is higher than the software
        !            25:  * level for the clock (so you can enter the network in routines called
        !            26:  * at timeout time).
        !            27:  */
        !            28: #if defined(vax) || defined(tahoe)
        !            29: #define        setsoftnet()    mtpr(SIRR, 12)
        !            30: #endif
        !            31: 
        !            32: /*
        !            33:  * Each ``pup-level-1'' input queue has a bit in a ``netisr'' status
        !            34:  * word which is used to de-multiplex a single software
        !            35:  * interrupt used for scheduling the network code to calls
        !            36:  * on the lowest level routine of each protocol.
        !            37:  */
        !            38: #define        NETISR_RAW      0               /* same as AF_UNSPEC */
        !            39: #define        NETISR_IP       2               /* same as AF_INET */
        !            40: #define        NETISR_IMP      3               /* same as AF_IMPLINK */
        !            41: #define        NETISR_NS       6               /* same as AF_NS */
        !            42: 
        !            43: #define        schednetisr(anisr)      { netisr |= 1<<(anisr); setsoftnet(); }
        !            44: 
        !            45: #ifndef LOCORE
        !            46: #ifdef KERNEL
        !            47: int    netisr;                         /* scheduling bits for network */
        !            48: #endif
        !            49: #endif

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