156482Ssklower /*- 2*63222Sbostic * Copyright (c) 1992, 1993 3*63222Sbostic * The Regents of the University of California. All rights reserved. 456482Ssklower * 556482Ssklower * %sccs.include.redist.c% 656482Ssklower * 7*63222Sbostic * @(#)tuba_table.h 8.1 (Berkeley) 06/10/93 856482Ssklower */ 956482Ssklower 1056482Ssklower struct tuba_cache { 1156482Ssklower struct radix_node tc_nodes[2]; /* convenient lookup */ 1256482Ssklower int tc_refcnt; 1356482Ssklower int tc_time; /* last looked up */ 1456482Ssklower int tc_flags; 1556482Ssklower #define TCF_PERM 1 1656482Ssklower int tc_index; 1756901Ssklower u_short tc_sum; /* cksum of nsap inc. length */ 1856901Ssklower u_short tc_ssum; /* swab(tc_sum) */ 1956704Ssklower struct sockaddr_iso tc_siso; /* for responding */ 2056482Ssklower }; 2156482Ssklower 2256681Ssklower #define ADDCARRY(x) (x >= 65535 ? x -= 65535 : x) 2356681Ssklower #define REDUCE(a, b) { union { u_short s[2]; long l;} l_util; long x; \ 2456901Ssklower l_util.l = (b); x = l_util.s[0] + l_util.s[1]; ADDCARRY(x); \ 2556901Ssklower if (x == 0) x = 0xffff; a = x;} 2656912Ssklower #define SWAB(a, b) { union { u_char c[2]; u_short s;} s; u_char t; \ 2756912Ssklower s.s = (b); t = s.c[0]; s.c[0] = s.c[1]; s.c[1] = t; a = s.s;} 2856482Ssklower 2956482Ssklower #ifdef KERNEL 3056912Ssklower extern int tuba_table_size; 3156912Ssklower extern struct tuba_cache **tuba_table; 3256912Ssklower extern struct radix_node_head *tuba_tree; 3356482Ssklower #endif 34