57 lines
2 KiB
C
57 lines
2 KiB
C
// SPDX-License-Identifier: GPL-2.0-or-later
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/*
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* IS-IS Rout(e)ing protocol - isis_flags.h
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* Routines for manipulation of SSN and SRM flags
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*
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* Copyright (C) 2001,2002 Sampo Saaristo
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* Tampere University of Technology
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* Institute of Communications Engineering
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*/
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#ifndef _ZEBRA_ISIS_FLAGS_H
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#define _ZEBRA_ISIS_FLAGS_H
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/* The grand plan is to support 1024 circuits so we have 32*32 bit flags
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* the support will be achived using the newest drafts */
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#define ISIS_MAX_CIRCUITS 32 /* = 1024 */
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/*
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* Flags structure for SSN and SRM flags
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*/
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struct flags {
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int maxindex;
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struct list *free_idcs;
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};
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void flags_initialize(struct flags *flags);
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long int flags_get_index(struct flags *flags);
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void flags_free_index(struct flags *flags, long int index);
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int flags_any_set(uint32_t *flags);
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#define _ISIS_SET_FLAG(F, C) \
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{ \
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F[(C) >> 5] |= (1 << ((C)&0x1F)); \
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}
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#define ISIS_SET_FLAG(F, C) _ISIS_SET_FLAG(F, C->idx)
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#define _ISIS_CLEAR_FLAG(F, C) \
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{ \
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F[(C) >> 5] &= ~(1 << ((C)&0x1F)); \
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}
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#define ISIS_CLEAR_FLAG(F, C) _ISIS_CLEAR_FLAG(F, C->idx)
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#define _ISIS_CHECK_FLAG(F, C) (F[(C)>>5] & (1<<((C) & 0x1F)))
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#define ISIS_CHECK_FLAG(F, C) _ISIS_CHECK_FLAG(F, C->idx)
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/* sets all u_32int_t flags to 1 */
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#define ISIS_FLAGS_SET_ALL(FLAGS) \
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{ \
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memset(FLAGS, 0xFF, ISIS_MAX_CIRCUITS * 4); \
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}
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#define ISIS_FLAGS_CLEAR_ALL(FLAGS) \
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{ \
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memset(FLAGS, 0x00, ISIS_MAX_CIRCUITS * 4); \
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}
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#endif /* _ZEBRA_ISIS_FLAGS_H */
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