1/* 2 * IS-IS Rout(e)ing protocol - isis_flags.h 3 * Routines for manipulation of SSN and SRM flags 4 * 5 * Copyright (C) 2001,2002 Sampo Saaristo 6 * Tampere University of Technology 7 * Institute of Communications Engineering 8 * 9 * This program is free software; you can redistribute it and/or modify it 10 * under the terms of the GNU General Public Licenseas published by the Free 11 * Software Foundation; either version 2 of the License, or (at your option) 12 * any later version. 13 * 14 * This program is distributed in the hope that it will be useful,but WITHOUT 15 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or 16 * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for 17 * more details. 18 19 * You should have received a copy of the GNU General Public License along 20 * with this program; if not, write to the Free Software Foundation, Inc., 21 * 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA. 22 */ 23 24#ifndef _ZEBRA_ISIS_FLAGS_H 25#define _ZEBRA_ISIS_FLAGS_H 26 27/* The grand plan is to support 1024 circuits so we have 32*32 bit flags 28 * the support will be achived using the newest drafts */ 29#define ISIS_MAX_CIRCUITS 32 /* = 1024 */ 30 31/* 32 * Flags structure for SSN and SRM flags 33 */ 34struct flags 35{ 36 int maxindex; 37 struct list *free_idcs; 38}; 39 40void flags_initialize (struct flags *flags); 41long int flags_get_index (struct flags *flags); 42void flags_free_index (struct flags *flags, long int index); 43int flags_any_set (u_int32_t * flags); 44 45#define ISIS_SET_FLAG(F,C) \ 46 { \ 47 F[C->idx>>5] |= (1<<(C->idx & 0x1F)); \ 48 } 49 50#define ISIS_CLEAR_FLAG(F,C) \ 51 { \ 52 F[C->idx>>5] &= ~(1<<(C->idx & 0x1F)); \ 53 } 54 55#define ISIS_CHECK_FLAG(F, C) (F[(C)->idx>>5] & (1<<(C->idx & 0x1F))) 56 57/* sets all u_32int_t flags to 1 */ 58#define ISIS_FLAGS_SET_ALL(FLAGS) \ 59 { \ 60 memset(FLAGS,0xFF,ISIS_MAX_CIRCUITS*4); \ 61 } 62 63#define ISIS_FLAGS_CLEAR_ALL(FLAGS) \ 64 { \ 65 memset(FLAGS,0x00,ISIS_MAX_CIRCUITS*4); \ 66 } 67 68#endif /* _ZEBRA_ISIS_FLAGS_H */ 69