]>
Commit | Line | Data |
---|---|---|
eb5d44eb | 1 | /* |
2 | * IS-IS Rout(e)ing protocol - isis_dynhn.c | |
3 | * Dynamic hostname cache | |
4 | * Copyright (C) 2001,2002 Sampo Saaristo | |
d62a17ae | 5 | * Tampere University of Technology |
eb5d44eb | 6 | * Institute of Communications Engineering |
7 | * | |
d62a17ae | 8 | * This program is free software; you can redistribute it and/or modify it |
9 | * under the terms of the GNU General Public Licenseas published by the Free | |
10 | * Software Foundation; either version 2 of the License, or (at your option) | |
eb5d44eb | 11 | * any later version. |
12 | * | |
d62a17ae | 13 | * This program is distributed in the hope that it will be useful,but WITHOUT |
14 | * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or | |
15 | * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for | |
eb5d44eb | 16 | * more details. |
17 | * | |
896014f4 DL |
18 | * You should have received a copy of the GNU General Public License along |
19 | * with this program; see the file COPYING; if not, write to the Free Software | |
20 | * Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA | |
eb5d44eb | 21 | */ |
22 | ||
eb5d44eb | 23 | #include <zebra.h> |
eb5d44eb | 24 | |
25 | #include "vty.h" | |
26 | #include "linklist.h" | |
27 | #include "memory.h" | |
28 | #include "log.h" | |
29 | #include "stream.h" | |
30 | #include "command.h" | |
31 | #include "if.h" | |
d3d7474b | 32 | #include "thread.h" |
eb5d44eb | 33 | |
eb5d44eb | 34 | #include "isisd/isis_constants.h" |
35 | #include "isisd/isis_common.h" | |
36 | #include "isisd/isis_flags.h" | |
37 | #include "isisd/isis_circuit.h" | |
38 | #include "isisd/isisd.h" | |
39 | #include "isisd/isis_dynhn.h" | |
40 | #include "isisd/isis_misc.h" | |
41 | #include "isisd/isis_constants.h" | |
42 | ||
66b9a381 DL |
43 | DEFINE_MTYPE_STATIC(ISISD, ISIS_DYNHN, "ISIS dyn hostname"); |
44 | ||
d62a17ae | 45 | static int dyn_cache_cleanup(struct thread *); |
eb5d44eb | 46 | |
eab88f36 | 47 | void dyn_cache_init(struct isis *isis) |
eb5d44eb | 48 | { |
240f48b3 | 49 | isis->dyn_cache = list_new(); |
52a7c25e RW |
50 | if (!CHECK_FLAG(im->options, F_ISIS_UNIT_TEST)) |
51 | thread_add_timer(master, dyn_cache_cleanup, isis, 120, | |
52 | &isis->t_dync_clean); | |
eb5d44eb | 53 | } |
54 | ||
240f48b3 | 55 | void dyn_cache_finish(struct isis *isis) |
52a7c25e RW |
56 | { |
57 | struct listnode *node, *nnode; | |
58 | struct isis_dynhn *dyn; | |
59 | ||
240f48b3 IR |
60 | thread_cancel(&isis->t_dync_clean); |
61 | ||
62 | for (ALL_LIST_ELEMENTS(isis->dyn_cache, node, nnode, dyn)) { | |
63 | list_delete_node(isis->dyn_cache, node); | |
52a7c25e RW |
64 | XFREE(MTYPE_ISIS_DYNHN, dyn); |
65 | } | |
240f48b3 IR |
66 | |
67 | list_delete(&isis->dyn_cache); | |
52a7c25e RW |
68 | } |
69 | ||
d62a17ae | 70 | static int dyn_cache_cleanup(struct thread *thread) |
d3d7474b | 71 | { |
d62a17ae | 72 | struct listnode *node, *nnode; |
73 | struct isis_dynhn *dyn; | |
74 | time_t now = time(NULL); | |
eab88f36 K |
75 | struct isis *isis = NULL; |
76 | ||
77 | isis = THREAD_ARG(thread); | |
d3d7474b | 78 | |
d62a17ae | 79 | isis->t_dync_clean = NULL; |
d3d7474b | 80 | |
240f48b3 | 81 | for (ALL_LIST_ELEMENTS(isis->dyn_cache, node, nnode, dyn)) { |
d62a17ae | 82 | if ((now - dyn->refresh) < MAX_LSP_LIFETIME) |
83 | continue; | |
240f48b3 | 84 | list_delete_node(isis->dyn_cache, node); |
d62a17ae | 85 | XFREE(MTYPE_ISIS_DYNHN, dyn); |
86 | } | |
d3d7474b | 87 | |
eab88f36 K |
88 | thread_add_timer(master, dyn_cache_cleanup, isis, 120, |
89 | &isis->t_dync_clean); | |
90 | ||
d62a17ae | 91 | return ISIS_OK; |
d3d7474b | 92 | } |
93 | ||
240f48b3 | 94 | struct isis_dynhn *dynhn_find_by_id(struct isis *isis, const uint8_t *id) |
eb5d44eb | 95 | { |
d62a17ae | 96 | struct listnode *node = NULL; |
97 | struct isis_dynhn *dyn = NULL; | |
eb5d44eb | 98 | |
240f48b3 | 99 | for (ALL_LIST_ELEMENTS_RO(isis->dyn_cache, node, dyn)) |
d62a17ae | 100 | if (memcmp(dyn->id, id, ISIS_SYS_ID_LEN) == 0) |
101 | return dyn; | |
f390d2c7 | 102 | |
d62a17ae | 103 | return NULL; |
eb5d44eb | 104 | } |
105 | ||
240f48b3 | 106 | struct isis_dynhn *dynhn_find_by_name(struct isis *isis, const char *hostname) |
3f045a08 | 107 | { |
d62a17ae | 108 | struct listnode *node = NULL; |
109 | struct isis_dynhn *dyn = NULL; | |
3f045a08 | 110 | |
240f48b3 | 111 | for (ALL_LIST_ELEMENTS_RO(isis->dyn_cache, node, dyn)) |
af8ac8f9 | 112 | if (strncmp(dyn->hostname, hostname, 255) == 0) |
d62a17ae | 113 | return dyn; |
3f045a08 | 114 | |
d62a17ae | 115 | return NULL; |
3f045a08 JB |
116 | } |
117 | ||
240f48b3 IR |
118 | void isis_dynhn_insert(struct isis *isis, const uint8_t *id, |
119 | const char *hostname, int level) | |
eb5d44eb | 120 | { |
d62a17ae | 121 | struct isis_dynhn *dyn; |
122 | ||
240f48b3 | 123 | dyn = dynhn_find_by_id(isis, id); |
d62a17ae | 124 | if (!dyn) { |
af8ac8f9 CF |
125 | dyn = XCALLOC(MTYPE_ISIS_DYNHN, sizeof(struct isis_dynhn)); |
126 | memcpy(dyn->id, id, ISIS_SYS_ID_LEN); | |
127 | dyn->level = level; | |
240f48b3 | 128 | listnode_add(isis->dyn_cache, dyn); |
d62a17ae | 129 | } |
130 | ||
af8ac8f9 | 131 | snprintf(dyn->hostname, sizeof(dyn->hostname), "%s", hostname); |
d62a17ae | 132 | dyn->refresh = time(NULL); |
eb5d44eb | 133 | } |
134 | ||
240f48b3 | 135 | void isis_dynhn_remove(struct isis *isis, const uint8_t *id) |
3f045a08 | 136 | { |
d62a17ae | 137 | struct isis_dynhn *dyn; |
138 | ||
240f48b3 | 139 | dyn = dynhn_find_by_id(isis, id); |
d62a17ae | 140 | if (!dyn) |
141 | return; | |
240f48b3 | 142 | listnode_delete(isis->dyn_cache, dyn); |
d62a17ae | 143 | XFREE(MTYPE_ISIS_DYNHN, dyn); |
3f045a08 JB |
144 | } |
145 | ||
eb5d44eb | 146 | /* |
147 | * Level System ID Dynamic Hostname (notag) | |
148 | * 2 0000.0000.0001 foo-gw | |
149 | * 2 0000.0000.0002 bar-gw | |
150 | * * 0000.0000.0004 this-gw | |
151 | */ | |
eab88f36 | 152 | void dynhn_print_all(struct vty *vty, struct isis *isis) |
eb5d44eb | 153 | { |
d62a17ae | 154 | struct listnode *node; |
155 | struct isis_dynhn *dyn; | |
156 | ||
eab88f36 K |
157 | vty_out(vty, "vrf : %s\n", isis->name); |
158 | if (!isis->sysid_set) | |
159 | return; | |
d62a17ae | 160 | vty_out(vty, "Level System ID Dynamic Hostname\n"); |
240f48b3 | 161 | for (ALL_LIST_ELEMENTS_RO(isis->dyn_cache, node, dyn)) { |
d62a17ae | 162 | vty_out(vty, "%-7d", dyn->level); |
163 | vty_out(vty, "%-15s%-15s\n", sysid_print(dyn->id), | |
af8ac8f9 | 164 | dyn->hostname); |
d62a17ae | 165 | } |
166 | ||
167 | vty_out(vty, " * %s %s\n", sysid_print(isis->sysid), | |
6b3ee3a0 | 168 | cmd_hostname_get()); |
d62a17ae | 169 | return; |
eb5d44eb | 170 | } |
1ee746d9 | 171 | |
240f48b3 IR |
172 | struct isis_dynhn *dynhn_snmp_next(struct isis *isis, const uint8_t *id, |
173 | int level) | |
1ee746d9 | 174 | { |
175 | struct listnode *node = NULL; | |
176 | struct isis_dynhn *dyn = NULL; | |
177 | struct isis_dynhn *found_dyn = NULL; | |
178 | int res; | |
179 | ||
240f48b3 | 180 | for (ALL_LIST_ELEMENTS_RO(isis->dyn_cache, node, dyn)) { |
1ee746d9 | 181 | res = memcmp(dyn->id, id, ISIS_SYS_ID_LEN); |
182 | ||
183 | if (res < 0) | |
184 | continue; | |
185 | ||
186 | if (res == 0 && dyn->level <= level) | |
187 | continue; | |
188 | ||
189 | if (res == 0) { | |
190 | /* | |
191 | * This is the best match, we can stop | |
192 | * searching | |
193 | */ | |
194 | ||
195 | found_dyn = dyn; | |
196 | break; | |
197 | } | |
198 | ||
199 | if (found_dyn == NULL | |
200 | || memcmp(dyn->id, found_dyn->id, ISIS_SYS_ID_LEN) < 0) { | |
201 | found_dyn = dyn; | |
202 | } | |
203 | } | |
204 | ||
205 | return found_dyn; | |
206 | } |