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acddc0ed3c
Done with a combination of regex'ing and banging my head against a wall. Signed-off-by: David Lamparter <equinox@opensourcerouting.org>
65 lines
1.4 KiB
C
65 lines
1.4 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.c
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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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#include <zebra.h>
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#include "log.h"
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#include "linklist.h"
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#include "isisd/isis_constants.h"
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#include "isisd/isis_common.h"
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#include "isisd/isis_flags.h"
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void flags_initialize(struct flags *flags)
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{
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flags->maxindex = 0;
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flags->free_idcs = NULL;
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}
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long int flags_get_index(struct flags *flags)
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{
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struct listnode *node;
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long int index;
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if (flags->free_idcs == NULL || flags->free_idcs->count == 0) {
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index = flags->maxindex++;
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} else {
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node = listhead(flags->free_idcs);
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index = (long int)listgetdata(node);
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listnode_delete(flags->free_idcs, (void *)index);
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index--;
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}
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return index;
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}
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void flags_free_index(struct flags *flags, long int index)
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{
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if (index + 1 == flags->maxindex) {
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flags->maxindex--;
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return;
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}
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if (flags->free_idcs == NULL) {
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flags->free_idcs = list_new();
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}
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listnode_add(flags->free_idcs, (void *)(index + 1));
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return;
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}
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int flags_any_set(uint32_t *flags)
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{
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uint32_t zero[ISIS_MAX_CIRCUITS];
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memset(zero, 0x00, ISIS_MAX_CIRCUITS * 4);
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return bcmp(flags, zero, ISIS_MAX_CIRCUITS * 4);
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}
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