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Annotation of embedaddon/quagga/isisd/isis_flags.h, revision 1.1.1.2

1.1       misho       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 */
1.1.1.2 ! misho      29: #define ISIS_MAX_CIRCUITS 32 /* = 1024 */
1.1       misho      30: 
1.1.1.2 ! misho      31: /*
        !            32:  * Flags structure for SSN and SRM flags
        !            33:  */
        !            34: struct flags
        !            35: {
        !            36:   int maxindex;
        !            37:   struct list *free_idcs;
        !            38: };
1.1       misho      39: 
1.1.1.2 ! misho      40: void flags_initialize (struct flags *flags);
        !            41: long int flags_get_index (struct flags *flags);
        !            42: void flags_free_index (struct flags *flags, long int index);
1.1       misho      43: int flags_any_set (u_int32_t * flags);
                     44: 
                     45: #define ISIS_SET_FLAG(F,C) \
1.1.1.2 ! misho      46:         { \
        !            47:           F[C->idx>>5] |= (1<<(C->idx & 0x1F)); \
        !            48:         }
1.1       misho      49: 
                     50: #define ISIS_CLEAR_FLAG(F,C) \
1.1.1.2 ! misho      51:         { \
        !            52:           F[C->idx>>5] &= ~(1<<(C->idx & 0x1F)); \
        !            53:         }
1.1       misho      54: 
1.1.1.2 ! misho      55: #define ISIS_CHECK_FLAG(F, C)  (F[(C)->idx>>5] & (1<<(C->idx & 0x1F)))
1.1       misho      56: 
                     57: /* sets all u_32int_t flags to 1 */
                     58: #define ISIS_FLAGS_SET_ALL(FLAGS) \
1.1.1.2 ! misho      59:         { \
        !            60:           memset(FLAGS,0xFF,ISIS_MAX_CIRCUITS*4); \
        !            61:         }
1.1       misho      62: 
                     63: #define ISIS_FLAGS_CLEAR_ALL(FLAGS) \
1.1.1.2 ! misho      64:         { \
        !            65:           memset(FLAGS,0x00,ISIS_MAX_CIRCUITS*4); \
        !            66:         }
1.1       misho      67: 
                     68: #endif /* _ZEBRA_ISIS_FLAGS_H */