4.3BSD - /usr/src/sys/net/netisr.h

   1: /*
   2:  * Copyright (c) 1980, 1986 Regents of the University of California.
   3:  * All rights reserved.  The Berkeley software License Agreement
   4:  * specifies the terms and conditions for redistribution.
   5:  *
   6:  *	@(#)netisr.h	7.1 (Berkeley) 6/4/86
   7:  */
   8: 
   9: /*
  10:  * The networking code runs off software interrupts.
  11:  *
  12:  * You can switch into the network by doing splnet() and return by splx().
  13:  * The software interrupt level for the network is higher than the software
  14:  * level for the clock (so you can enter the network in routines called
  15:  * at timeout time).
  16:  */
  17: #ifdef vax
  18: #define setsoftnet()    mtpr(SIRR, 12)
  19: #endif
  20: 
  21: /*
  22:  * Each ``pup-level-1'' input queue has a bit in a ``netisr'' status
  23:  * word which is used to de-multiplex a single software
  24:  * interrupt used for scheduling the network code to calls
  25:  * on the lowest level routine of each protocol.
  26:  */
  27: #define NETISR_RAW  0       /* same as AF_UNSPEC */
  28: #define NETISR_IP   2       /* same as AF_INET */
  29: #define NETISR_IMP  3       /* same as AF_IMPLINK */
  30: #define NETISR_NS   6       /* same as AF_NS */
  31: 
  32: #define schednetisr(anisr)  { netisr |= 1<<(anisr); setsoftnet(); }
  33: 
  34: #ifndef LOCORE
  35: #ifdef KERNEL
  36: int netisr;             /* scheduling bits for network */
  37: #endif
  38: #endif

Defined variables

Defined macros

Usage of this include