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66 lines
2.8 KiB
C
66 lines
2.8 KiB
C
/*-
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* Copyright (c) 1992, 1993
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* The Regents of the University of California. All rights reserved.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions
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* are met:
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* 1. Redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer.
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* 2. Redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in the
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* documentation and/or other materials provided with the distribution.
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* 3. All advertising materials mentioning features or use of this software
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* must display the following acknowledgement:
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* This product includes software developed by the University of
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* California, Berkeley and its contributors.
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* 4. Neither the name of the University nor the names of its contributors
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* may be used to endorse or promote products derived from this software
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* without specific prior written permission.
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*
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* THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
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* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
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* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
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* ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
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* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
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* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
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* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
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* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
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* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
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* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
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* SUCH DAMAGE.
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*
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* @(#)tuba_table.h 8.1 (Berkeley) 6/10/93
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* $Id: tuba_table.h,v 1.2 1994/08/02 07:51:37 davidg Exp $
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*/
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#ifndef _NETISO_TUBA_TABLE_H_
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#define _NETISO_TUBA_TABLE_H_
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struct tuba_cache {
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struct radix_node tc_nodes[2]; /* convenient lookup */
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int tc_refcnt;
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int tc_time; /* last looked up */
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int tc_flags;
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#define TCF_PERM 1
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int tc_index;
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u_short tc_sum; /* cksum of nsap inc. length */
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u_short tc_ssum; /* swab(tc_sum) */
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struct sockaddr_iso tc_siso; /* for responding */
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};
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#define ADDCARRY(x) (x >= 65535 ? x -= 65535 : x)
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#define REDUCE(a, b) { union { u_short s[2]; long l;} l_util; long x; \
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l_util.l = (b); x = l_util.s[0] + l_util.s[1]; ADDCARRY(x); \
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if (x == 0) x = 0xffff; a = x;}
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#define SWAB(a, b) { union { u_char c[2]; u_short s;} s; u_char t; \
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s.s = (b); t = s.c[0]; s.c[0] = s.c[1]; s.c[1] = t; a = s.s;}
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#ifdef KERNEL
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extern int tuba_table_size;
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extern struct tuba_cache **tuba_table;
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extern struct radix_node_head *tuba_tree;
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#endif
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#endif
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