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d047984351
Subnets are represented in the routing table as a set of binary routing nets using the standard netmask algorythm. The code produces the minimum possible set of standard netmasks and net addresses to be able to represent a given netrange.
98 lines
2.6 KiB
C
98 lines
2.6 KiB
C
/*
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* Copyright (c) 1990,1991 Regents of The University of Michigan.
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* All Rights Reserved.
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*
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* Permission to use, copy, modify, and distribute this software and
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* its documentation for any purpose and without fee is hereby granted,
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* provided that the above copyright notice appears in all copies and
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* that both that copyright notice and this permission notice appear
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* in supporting documentation, and that the name of The University
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* of Michigan not be used in advertising or publicity pertaining to
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* distribution of the software without specific, written prior
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* permission. This software is supplied as is without expressed or
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* implied warranties of any kind.
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*
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* Research Systems Unix Group
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* The University of Michigan
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* c/o Mike Clark
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* 535 W. William Street
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* Ann Arbor, Michigan
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* +1-313-763-0525
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* netatalk@itd.umich.edu
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*/
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#ifndef __AT_HEADER__
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#define __AT_HEADER__
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/*
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* Supported protocols
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*/
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#define ATPROTO_DDP 0
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#define ATPROTO_AARP 254
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/*
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* Ethernet types, for DIX.
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* These should really be in some global header file, but we can't
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* count on them being there, and it's annoying to patch system files.
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*/
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#define ETHERTYPE_AT 0x809B /* AppleTalk protocol */
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#define ETHERTYPE_AARP 0x80F3 /* AppleTalk ARP */
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#define DDP_MAXSZ 587
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/*
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* If ATPORT_FIRST <= Port < ATPORT_RESERVED,
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* Port was created by a privileged process.
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* If ATPORT_RESERVED <= Port < ATPORT_LAST,
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* Port was not necessarily created by a
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* privileged process.
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*/
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#define ATPORT_FIRST 1
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#define ATPORT_RESERVED 128
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#define ATPORT_LAST 255
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/*
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* AppleTalk address.
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*/
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struct at_addr {
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u_short s_net;
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u_char s_node;
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};
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#define ATADDR_ANYNET (u_short)0x0000
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#define ATADDR_ANYNODE (u_char)0x00
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#define ATADDR_ANYPORT (u_char)0x00
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#define ATADDR_BCAST (u_char)0xff /* There is no BCAST for NET */
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struct netrange {
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u_char nr_phase;
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u_short nr_firstnet;
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u_short nr_lastnet;
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};
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/*
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* Socket address, AppleTalk style. We keep magic information in the
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* zero bytes. There are three types, NONE, CONFIG which has the phase
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* and a net range, and IFACE which has the network address of an
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* interface. IFACE may be filled in by the client, and is filled in
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* by the kernel.
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*/
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struct sockaddr_at {
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u_char sat_len;
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u_char sat_family;
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u_char sat_port;
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struct at_addr sat_addr;
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union {
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struct netrange r_netrange;
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char r_zero[ 8 ]; /* Hide a struct netrange in here */
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} sat_range;
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};
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#define sat_zero sat_range.r_zero
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#ifdef KERNEL
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extern struct domain atalkdomain;
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extern struct protosw atalksw[];
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#endif
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#endif __AT_HEADER__
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