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; see the file COPYING; if not, write to the Free Software 21 * Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 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 */ 34 struct flags { 35 int maxindex; 36 struct list *free_idcs; 37 }; 38 39 void flags_initialize(struct flags *flags); 40 long int flags_get_index(struct flags *flags); 41 void flags_free_index(struct flags *flags, long int index); 42 int flags_any_set(uint32_t *flags); 43 44 #define _ISIS_SET_FLAG(F, C) \ 45 { \ 46 F[(C) >> 5] |= (1 << ((C)&0x1F)); \ 47 } 48 #define ISIS_SET_FLAG(F, C) _ISIS_SET_FLAG(F, C->idx) 49 50 #define _ISIS_CLEAR_FLAG(F, C) \ 51 { \ 52 F[(C) >> 5] &= ~(1 << ((C)&0x1F)); \ 53 } 54 #define ISIS_CLEAR_FLAG(F, C) _ISIS_CLEAR_FLAG(F, C->idx) 55 56 #define _ISIS_CHECK_FLAG(F, C) (F[(C)>>5] & (1<<((C) & 0x1F))) 57 #define ISIS_CHECK_FLAG(F, C) _ISIS_CHECK_FLAG(F, C->idx) 58 59 /* sets all u_32int_t flags to 1 */ 60 #define ISIS_FLAGS_SET_ALL(FLAGS) \ 61 { \ 62 memset(FLAGS, 0xFF, ISIS_MAX_CIRCUITS * 4); \ 63 } 64 65 #define ISIS_FLAGS_CLEAR_ALL(FLAGS) \ 66 { \ 67 memset(FLAGS, 0x00, ISIS_MAX_CIRCUITS * 4); \ 68 } 69 70 #endif /* _ZEBRA_ISIS_FLAGS_H */ 71