]>
Commit | Line | Data |
---|---|---|
eb5d44eb | 1 | /* |
2 | * IS-IS Rout(e)ing protocol - isis_flags.c | |
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 | ||
eb5d44eb | 24 | #include <zebra.h> |
25 | #include "log.h" | |
26 | #include "linklist.h" | |
27 | ||
28 | #include "isisd/isis_constants.h" | |
29 | #include "isisd/isis_common.h" | |
30 | #include "isisd/isis_flags.h" | |
31 | ||
32 | int | |
f390d2c7 | 33 | flags_get_index (struct flags *flags) |
eb5d44eb | 34 | { |
35 | struct listnode *node; | |
36 | int index; | |
37 | ||
f390d2c7 | 38 | if (flags->free_idcs == NULL || flags->free_idcs->count == 0) |
39 | { | |
40 | flags->maxindex++; | |
41 | index = flags->maxindex; | |
42 | } | |
43 | else | |
44 | { | |
45 | node = listhead (flags->free_idcs); | |
1eb8ef25 | 46 | index = (int) listgetdata (node); |
f390d2c7 | 47 | listnode_delete (flags->free_idcs, (void *) index); |
48 | } | |
49 | ||
eb5d44eb | 50 | return index; |
51 | } | |
52 | ||
f390d2c7 | 53 | void |
54 | flags_free_index (struct flags *flags, int index) | |
eb5d44eb | 55 | { |
f390d2c7 | 56 | if (flags->free_idcs == NULL) |
57 | { | |
58 | flags->free_idcs = list_new (); | |
59 | } | |
60 | ||
61 | listnode_add (flags->free_idcs, (void *) index); | |
62 | ||
eb5d44eb | 63 | return; |
64 | } | |
65 | ||
f390d2c7 | 66 | int |
67 | flags_any_set (u_int32_t * flags) | |
eb5d44eb | 68 | { |
f390d2c7 | 69 | u_int32_t zero[ISIS_MAX_CIRCUITS]; |
70 | memset (zero, 0x00, ISIS_MAX_CIRCUITS * 4); | |
eb5d44eb | 71 | |
f390d2c7 | 72 | return bcmp (flags, zero, ISIS_MAX_CIRCUITS * 4); |
eb5d44eb | 73 | } |