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/*
* IS-IS Rout(e)ing protocol - isis_flags.h
* Routines for manipulation of SSN and SRM flags
*
* Copyright (C) 2001,2002 Sampo Saaristo
* Tampere University of Technology
* Institute of Communications Engineering
*
* This program is free software; you can redistribute it and/or modify it
* under the terms of the GNU General Public Licenseas published by the Free
* Software Foundation; either version 2 of the License, or (at your option)
* any later version.
*
* This program is distributed in the hope that it will be useful,but WITHOUT
* ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
* FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for
* more details.
*
* You should have received a copy of the GNU General Public License along
* with this program; see the file COPYING; if not, write to the Free Software
* Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
*/
#ifndef _ZEBRA_ISIS_FLAGS_H
#define _ZEBRA_ISIS_FLAGS_H
/* The grand plan is to support 1024 circuits so we have 32*32 bit flags
* the support will be achived using the newest drafts */
#define ISIS_MAX_CIRCUITS 32 /* = 1024 */
/*
* Flags structure for SSN and SRM flags
*/
struct flags {
int maxindex;
struct list *free_idcs;
};
void flags_initialize(struct flags *flags);
long int flags_get_index(struct flags *flags);
void flags_free_index(struct flags *flags, long int index);
int flags_any_set(u_int32_t *flags);
#define _ISIS_SET_FLAG(F, C) \
{ \
F[(C) >> 5] |= (1 << ((C)&0x1F)); \
}
#define ISIS_SET_FLAG(F, C) _ISIS_SET_FLAG(F, C->idx)
#define _ISIS_CLEAR_FLAG(F, C) \
{ \
F[(C) >> 5] &= ~(1 << ((C)&0x1F)); \
}
#define ISIS_CLEAR_FLAG(F, C) _ISIS_CLEAR_FLAG(F, C->idx)
#define _ISIS_CHECK_FLAG(F, C) (F[(C)>>5] & (1<<((C) & 0x1F)))
#define ISIS_CHECK_FLAG(F, C) _ISIS_CHECK_FLAG(F, C->idx)
/* sets all u_32int_t flags to 1 */
#define ISIS_FLAGS_SET_ALL(FLAGS) \
{ \
memset(FLAGS, 0xFF, ISIS_MAX_CIRCUITS * 4); \
}
#define ISIS_FLAGS_CLEAR_ALL(FLAGS) \
{ \
memset(FLAGS, 0x00, ISIS_MAX_CIRCUITS * 4); \
}
#endif /* _ZEBRA_ISIS_FLAGS_H */
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