1 /*- 2 * Copyright (c) 1992 The Regents of the University of California. 3 * All rights reserved. 4 * 5 * %sccs.include.redist.c% 6 * 7 * @(#)tuba_table.h 7.4 (Berkeley) 11/05/92 8 */ 9 10 struct tuba_cache { 11 struct radix_node tc_nodes[2]; /* convenient lookup */ 12 int tc_refcnt; 13 int tc_time; /* last looked up */ 14 int tc_flags; 15 #define TCF_PERM 1 16 int tc_index; 17 u_short tc_sum_in; /* for inbound cksum */ 18 u_short tc_sum_out; /* for outbound cksum */ 19 struct iso_addr tc_addr; 20 }; 21 22 #define ADDCARRY(x) (x >= 65535 ? x -= 65535 : x) 23 #define REDUCE(a, b) { union { u_short s[2]; long l;} l_util; long x; \ 24 l_util.l = (b); x = l_util.s[0] + l_util.s[1]; ADDCARRY(x); a = x;} 25 26 #ifdef KERNEL 27 extern int tuba_table_size; 28 extern struct tuba_cache **tuba_table; 29 extern struct radix_node_head *tuba_tree; 30 #endif 31