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Annotation of 43BSDReno/share/doc/smm/15.net/3.t, revision 1.1

1.1     ! root        1: .\" Copyright (c) 1983, 1986 The Regents of the University of California.
        !             2: .\" All rights reserved.
        !             3: .\"
        !             4: .\" Redistribution and use in source and binary forms are permitted
        !             5: .\" provided that the above copyright notice and this paragraph are
        !             6: .\" duplicated in all such forms and that any documentation,
        !             7: .\" advertising materials, and other materials related to such
        !             8: .\" distribution and use acknowledge that the software was developed
        !             9: .\" by the University of California, Berkeley.  The name of the
        !            10: .\" University may not be used to endorse or promote products derived
        !            11: .\" from this software without specific prior written permission.
        !            12: .\" THIS SOFTWARE IS PROVIDED ``AS IS'' AND WITHOUT ANY EXPRESS OR
        !            13: .\" IMPLIED WARRANTIES, INCLUDING, WITHOUT LIMITATION, THE IMPLIED
        !            14: .\" WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE.
        !            15: .\"
        !            16: .\"    @(#)3.t 6.4 (Berkeley) 3/7/89
        !            17: .\"
        !            18: .nr H2 1
        !            19: .\".ds RH Goals
        !            20: .br
        !            21: .ne 2i
        !            22: .NH
        !            23: \s+2Goals\s0
        !            24: .PP
        !            25: The networking system was designed with the goal of supporting
        !            26: multiple \fIprotocol families\fP and addressing styles.  This required
        !            27: information to be ``hidden'' in common data structures which
        !            28: could be manipulated by all the pieces of the system, but which
        !            29: required interpretation only by the protocols which ``controlled''
        !            30: it.  The system described here attempts to minimize
        !            31: the use of shared data structures to those kept by a suite of
        !            32: protocols (a \fIprotocol family\fP), and those used for rendezvous
        !            33: between ``synchronous'' and ``asynchronous'' portions of the
        !            34: system (e.g. queues of data packets are filled at interrupt
        !            35: time and emptied based on user requests).
        !            36: .PP
        !            37: A major goal of the system was to provide a framework within
        !            38: which new protocols and hardware could be easily be supported.
        !            39: To this end, a great deal of effort has been extended to
        !            40: create utility routines which hide many of the more
        !            41: complex and/or hardware dependent chores of networking.
        !            42: Later sections describe the utility routines and the underlying
        !            43: data structures they manipulate.

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