The Design and Implementation of the FreeBSD Operating System, Second Edition
Now available: The Design and Implementation of the FreeBSD Operating System (Second Edition)


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FreeBSD/Linux Kernel Cross Reference
sys/norma/ipc_net.h

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    1 /* 
    2  * Mach Operating System
    3  * Copyright (c) 1991,1992 Carnegie Mellon University
    4  * All Rights Reserved.
    5  * 
    6  * Permission to use, copy, modify and distribute this software and its
    7  * documentation is hereby granted, provided that both the copyright
    8  * notice and this permission notice appear in all copies of the
    9  * software, derivative works or modified versions, and any portions
   10  * thereof, and that both notices appear in supporting documentation.
   11  * 
   12  * CARNEGIE MELLON ALLOWS FREE USE OF THIS SOFTWARE IN ITS "AS IS"
   13  * CONDITION.  CARNEGIE MELLON DISCLAIMS ANY LIABILITY OF ANY KIND FOR
   14  * ANY DAMAGES WHATSOEVER RESULTING FROM THE USE OF THIS SOFTWARE.
   15  * 
   16  * Carnegie Mellon requests users of this software to return to
   17  * 
   18  *  Software Distribution Coordinator  or  Software.Distribution@CS.CMU.EDU
   19  *  School of Computer Science
   20  *  Carnegie Mellon University
   21  *  Pittsburgh PA 15213-3890
   22  * 
   23  * any improvements or extensions that they make and grant Carnegie Mellon
   24  * the rights to redistribute these changes.
   25  */
   26 /*
   27  * HISTORY
   28  * $Log:        ipc_net.h,v $
   29  * Revision 2.4  93/05/15  20:00:59  mrt
   30  *      machparam.h -> machspl.h
   31  * 
   32  * Revision 2.3  92/03/10  16:27:58  jsb
   33  *      Merged in norma branch changes as of NORMA_MK7.
   34  *      [92/03/09  12:49:55  jsb]
   35  * 
   36  * Revision 2.2.2.1  92/01/21  21:51:40  jsb
   37  *      Added file/author/date comment.
   38  *      [92/01/21  19:44:13  jsb]
   39  * 
   40  *      Conditionalized NETIPC_CHECKSUM on NORMA_ETHER. Removed MAXVEC
   41  *      definition. Removed lint-inspired includes of ipc_{pset,space}.h.
   42  *      [92/01/16  22:09:32  jsb]
   43  * 
   44  *      Added NETIPC_CHECKSUM conditional and netipc_hdr checksum field.
   45  *      [92/01/14  21:32:29  jsb]
   46  * 
   47  *      Changed ctl_status type.
   48  *      [92/01/13  19:34:52  jsb]
   49  * 
   50  *      De-linted.
   51  *      [92/01/13  10:14:47  jsb]
   52  * 
   53  *      Moved protocol dependent definitions into norma/ipc_unreliable.c.
   54  *      Added ctl_status to netipc_hdr (which shouldn't be exported anyway).
   55  *      [92/01/11  17:07:26  jsb]
   56  * 
   57  *      Old contents moved to norma/ipc_netvec.h.
   58  *      Now contains definitions shared by files split from norma/ipc_net.c.
   59  *      [92/01/10  20:38:53  jsb]
   60  * 
   61  */ 
   62 /*
   63  *      File:   norma/ipc_net.h
   64  *      Author: Joseph S. Barrera III
   65  *      Date:   1991
   66  *
   67  *      Definitions for reliable delivery and flow control for NORMA_IPC.
   68  */
   69 
   70 #include <norma_ether.h>
   71 
   72 #include <machine/machspl.h>
   73 #include <vm/vm_kern.h>
   74 #include <vm/vm_page.h>
   75 #include <mach/vm_param.h>
   76 #include <kern/assert.h>
   77 #include <kern/lock.h>
   78 #include <ipc/ipc_port.h>
   79 #include <ipc/ipc_kmsg.h>
   80 #include <norma/ipc_node.h>
   81 #include <norma/ipc_netvec.h>
   82 #include <sys/varargs.h>
   83 
   84 #if     NORMA_ETHER
   85 #define NETIPC_CHECKSUM 1
   86 #else
   87 /*
   88  * XXX
   89  * The checksumming code is not likely to work on the ipsc until
   90  * the netipc_recv routines for i386 and i860 are changed to set
   91  * the vector sizes to reflect the size of the incoming data.
   92  */
   93 #define NETIPC_CHECKSUM 0
   94 #endif
   95 
   96 #define NETIPC_TYPE_INVALID     0x00000000L
   97 #define NETIPC_TYPE_KMSG        0xabcdef00L
   98 #define NETIPC_TYPE_PAGE        0xabcdef01L
   99 #define NETIPC_TYPE_CTL         0xabcdef02L
  100 
  101 struct pginfo {
  102         unsigned long   pg_msgh_offset;
  103         boolean_t       pg_page_first;
  104         boolean_t       pg_page_last;
  105         boolean_t       pg_copy_last;
  106         unsigned long   pg_copy_offset;
  107         unsigned long   pg_copy_size;
  108 };
  109 
  110 struct netipc_hdr {
  111 #if     NETIPC_CHECKSUM
  112         unsigned long   checksum;
  113 #endif  NETIPC_CHECKSUM
  114         unsigned long   type;
  115         unsigned long   seqid;
  116         struct pginfo   pg;
  117         unsigned long   remote;
  118         unsigned long   ctl;
  119         unsigned long   ctl_seqid;
  120         kern_return_t   ctl_status;
  121         unsigned long   ctl_data;
  122         unsigned long   incarnation;
  123 };
  124 
  125 /*
  126  * Some devices want virtual addresses, others want physical addresses.
  127  *
  128  * KVTODEV:     Kernel virtual address to device address
  129  * DEVTOKV:     Device address to kernel virtual address
  130  * VPTODEV:     vm_page_t to device address
  131  *
  132  * XXX These should be defined somewhere else.
  133  */
  134 #if     NORMA_ETHER     || i860
  135 /*
  136  * Device uses virtual addresses.
  137  */
  138 #define KVTODEV(addr)   ((unsigned long) (addr))
  139 #define DEVTOKV(addr)   ((unsigned long) (addr))
  140 #define VPTODEV(m)      (VPTOKV(m))
  141 #else   /*NORMA_ETHER*/
  142 /*
  143  * Device uses physical addresses.
  144  */
  145 #define KVTODEV(addr)   ((unsigned long) kvtophys(addr))
  146 #define DEVTOKV(addr)   ((unsigned long) phystokv(addr))
  147 #define VPTODEV(m)      ((m)->phys_addr)
  148 #endif  /*NORMA_ETHER*/
  149 
  150 #define VPTOKV(m)       phystokv((m)->phys_addr)
  151 
  152 extern void netipc_thread_lock();
  153 extern void netipc_thread_unlock();
  154 extern void netipc_copy_ungrab();

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