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

     /* 
      * Mach Operating System
      * Copyright (c) 1991,1992 Carnegie Mellon University
      * All Rights Reserved.
      * 
      * Permission to use, copy, modify and distribute this software and its
      * documentation is hereby granted, provided that both the copyright
      * notice and this permission notice appear in all copies of the
      * software, derivative works or modified versions, and any portions
     * thereof, and that both notices appear in supporting documentation.
     * 
     * CARNEGIE MELLON ALLOWS FREE USE OF THIS SOFTWARE IN ITS "AS IS"
     * CONDITION.  CARNEGIE MELLON DISCLAIMS ANY LIABILITY OF ANY KIND FOR
     * ANY DAMAGES WHATSOEVER RESULTING FROM THE USE OF THIS SOFTWARE.
     * 
     * Carnegie Mellon requests users of this software to return to
     * 
     *  Software Distribution Coordinator  or  Software.Distribution@CS.CMU.EDU
     *  School of Computer Science
     *  Carnegie Mellon University
     *  Pittsburgh PA 15213-3890
     * 
     * any improvements or extensions that they make and grant Carnegie Mellon
     * the rights to redistribute these changes.
     */
    /*
     * HISTORY
     * $Log:        ipc_net.h,v $
     * Revision 2.4  93/05/15  20:00:59  mrt
     *      machparam.h -> machspl.h
     * 
     * Revision 2.3  92/03/10  16:27:58  jsb
     *      Merged in norma branch changes as of NORMA_MK7.
     *      [92/03/09  12:49:55  jsb]
     * 
     * Revision 2.2.2.1  92/01/21  21:51:40  jsb
     *      Added file/author/date comment.
     *      [92/01/21  19:44:13  jsb]
     * 
     *      Conditionalized NETIPC_CHECKSUM on NORMA_ETHER. Removed MAXVEC
     *      definition. Removed lint-inspired includes of ipc_{pset,space}.h.
     *      [92/01/16  22:09:32  jsb]
     * 
     *      Added NETIPC_CHECKSUM conditional and netipc_hdr checksum field.
     *      [92/01/14  21:32:29  jsb]
     * 
     *      Changed ctl_status type.
     *      [92/01/13  19:34:52  jsb]
     * 
     *      De-linted.
     *      [92/01/13  10:14:47  jsb]
     * 
     *      Moved protocol dependent definitions into norma/ipc_unreliable.c.
     *      Added ctl_status to netipc_hdr (which shouldn't be exported anyway).
     *      [92/01/11  17:07:26  jsb]
     * 
     *      Old contents moved to norma/ipc_netvec.h.
     *      Now contains definitions shared by files split from norma/ipc_net.c.
     *      [92/01/10  20:38:53  jsb]
     * 
     */ 
    /*
     *      File:   norma/ipc_net.h
     *      Author: Joseph S. Barrera III
     *      Date:   1991
     *
     *      Definitions for reliable delivery and flow control for NORMA_IPC.
     */
    
    #include <norma_ether.h>
    
    #include <machine/machspl.h>
    #include <vm/vm_kern.h>
    #include <vm/vm_page.h>
    #include <mach/vm_param.h>
    #include <kern/assert.h>
    #include <kern/lock.h>
    #include <ipc/ipc_port.h>
    #include <ipc/ipc_kmsg.h>
    #include <norma/ipc_node.h>
    #include <norma/ipc_netvec.h>
    #include <sys/varargs.h>
    
    #if     NORMA_ETHER
    #define NETIPC_CHECKSUM 1
    #else
    /*
     * XXX
     * The checksumming code is not likely to work on the ipsc until
     * the netipc_recv routines for i386 and i860 are changed to set
     * the vector sizes to reflect the size of the incoming data.
     */
    #define NETIPC_CHECKSUM 0
    #endif
    
    #define NETIPC_TYPE_INVALID     0x00000000L
    #define NETIPC_TYPE_KMSG        0xabcdef00L
    #define NETIPC_TYPE_PAGE        0xabcdef01L
    #define NETIPC_TYPE_CTL         0xabcdef02L
   
   struct pginfo {
           unsigned long   pg_msgh_offset;
           boolean_t       pg_page_first;
           boolean_t       pg_page_last;
           boolean_t       pg_copy_last;
           unsigned long   pg_copy_offset;
           unsigned long   pg_copy_size;
   };
   
   struct netipc_hdr {
   #if     NETIPC_CHECKSUM
           unsigned long   checksum;
   #endif  NETIPC_CHECKSUM
           unsigned long   type;
           unsigned long   seqid;
           struct pginfo   pg;
           unsigned long   remote;
           unsigned long   ctl;
           unsigned long   ctl_seqid;
           kern_return_t   ctl_status;
           unsigned long   ctl_data;
           unsigned long   incarnation;
   };
   
   /*
    * Some devices want virtual addresses, others want physical addresses.
    *
    * KVTODEV:     Kernel virtual address to device address
    * DEVTOKV:     Device address to kernel virtual address
    * VPTODEV:     vm_page_t to device address
    *
    * XXX These should be defined somewhere else.
    */
   #if     NORMA_ETHER     || i860
   /*
    * Device uses virtual addresses.
    */
   #define KVTODEV(addr)   ((unsigned long) (addr))
   #define DEVTOKV(addr)   ((unsigned long) (addr))
   #define VPTODEV(m)      (VPTOKV(m))
   #else   /*NORMA_ETHER*/
   /*
    * Device uses physical addresses.
    */
   #define KVTODEV(addr)   ((unsigned long) kvtophys(addr))
   #define DEVTOKV(addr)   ((unsigned long) phystokv(addr))
   #define VPTODEV(m)      ((m)->phys_addr)
   #endif  /*NORMA_ETHER*/
   
   #define VPTOKV(m)       phystokv((m)->phys_addr)
   
   extern void netipc_thread_lock();
   extern void netipc_thread_unlock();
   extern void netipc_copy_ungrab();

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