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Annotation of 43BSDTahoe/sys/net/netisr.h, revision 1.1.1.1

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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