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git.proxmox.com Git - mirror_frr.git/blob - isisd/isis_dynhn.c
2 * IS-IS Rout(e)ing protocol - isis_dynhn.c
3 * Dynamic hostname cache
4 * Copyright (C) 2001,2002 Sampo Saaristo
5 * Tampere University of Technology
6 * Institute of Communications Engineering
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)
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
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
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"
43 DEFINE_MTYPE_STATIC(ISISD
, ISIS_DYNHN
, "ISIS dyn hostname");
45 static void dyn_cache_cleanup(struct thread
*);
47 void dyn_cache_init(struct isis
*isis
)
49 isis
->dyn_cache
= list_new();
50 if (!CHECK_FLAG(im
->options
, F_ISIS_UNIT_TEST
))
51 thread_add_timer(master
, dyn_cache_cleanup
, isis
, 120,
55 void dyn_cache_finish(struct isis
*isis
)
57 struct listnode
*node
, *nnode
;
58 struct isis_dynhn
*dyn
;
60 THREAD_OFF(isis
->t_dync_clean
);
62 for (ALL_LIST_ELEMENTS(isis
->dyn_cache
, node
, nnode
, dyn
)) {
63 list_delete_node(isis
->dyn_cache
, node
);
64 XFREE(MTYPE_ISIS_DYNHN
, dyn
);
67 list_delete(&isis
->dyn_cache
);
70 static void dyn_cache_cleanup(struct thread
*thread
)
72 struct listnode
*node
, *nnode
;
73 struct isis_dynhn
*dyn
;
74 time_t now
= time(NULL
);
75 struct isis
*isis
= NULL
;
77 isis
= THREAD_ARG(thread
);
79 isis
->t_dync_clean
= NULL
;
81 for (ALL_LIST_ELEMENTS(isis
->dyn_cache
, node
, nnode
, dyn
)) {
82 if ((now
- dyn
->refresh
) < MAX_LSP_LIFETIME
)
84 list_delete_node(isis
->dyn_cache
, node
);
85 XFREE(MTYPE_ISIS_DYNHN
, dyn
);
88 thread_add_timer(master
, dyn_cache_cleanup
, isis
, 120,
92 struct isis_dynhn
*dynhn_find_by_id(struct isis
*isis
, const uint8_t *id
)
94 struct listnode
*node
= NULL
;
95 struct isis_dynhn
*dyn
= NULL
;
97 for (ALL_LIST_ELEMENTS_RO(isis
->dyn_cache
, node
, dyn
))
98 if (memcmp(dyn
->id
, id
, ISIS_SYS_ID_LEN
) == 0)
104 struct isis_dynhn
*dynhn_find_by_name(struct isis
*isis
, const char *hostname
)
106 struct listnode
*node
= NULL
;
107 struct isis_dynhn
*dyn
= NULL
;
109 for (ALL_LIST_ELEMENTS_RO(isis
->dyn_cache
, node
, dyn
))
110 if (strncmp(dyn
->hostname
, hostname
, 255) == 0)
116 void isis_dynhn_insert(struct isis
*isis
, const uint8_t *id
,
117 const char *hostname
, int level
)
119 struct isis_dynhn
*dyn
;
121 dyn
= dynhn_find_by_id(isis
, id
);
123 dyn
= XCALLOC(MTYPE_ISIS_DYNHN
, sizeof(struct isis_dynhn
));
124 memcpy(dyn
->id
, id
, ISIS_SYS_ID_LEN
);
126 listnode_add(isis
->dyn_cache
, dyn
);
129 snprintf(dyn
->hostname
, sizeof(dyn
->hostname
), "%s", hostname
);
130 dyn
->refresh
= time(NULL
);
133 void isis_dynhn_remove(struct isis
*isis
, const uint8_t *id
)
135 struct isis_dynhn
*dyn
;
137 dyn
= dynhn_find_by_id(isis
, id
);
140 listnode_delete(isis
->dyn_cache
, dyn
);
141 XFREE(MTYPE_ISIS_DYNHN
, dyn
);
145 * Level System ID Dynamic Hostname (notag)
146 * 2 0000.0000.0001 foo-gw
147 * 2 0000.0000.0002 bar-gw
148 * * 0000.0000.0004 this-gw
150 void dynhn_print_all(struct vty
*vty
, struct isis
*isis
)
152 struct listnode
*node
;
153 struct isis_dynhn
*dyn
;
155 vty_out(vty
, "vrf : %s\n", isis
->name
);
156 if (!isis
->sysid_set
)
158 vty_out(vty
, "Level System ID Dynamic Hostname\n");
159 for (ALL_LIST_ELEMENTS_RO(isis
->dyn_cache
, node
, dyn
)) {
160 vty_out(vty
, "%-7d", dyn
->level
);
161 vty_out(vty
, "%-15s%-15s\n", sysid_print(dyn
->id
),
165 vty_out(vty
, " * %s %s\n", sysid_print(isis
->sysid
),
170 struct isis_dynhn
*dynhn_snmp_next(struct isis
*isis
, const uint8_t *id
,
173 struct listnode
*node
= NULL
;
174 struct isis_dynhn
*dyn
= NULL
;
175 struct isis_dynhn
*found_dyn
= NULL
;
178 for (ALL_LIST_ELEMENTS_RO(isis
->dyn_cache
, node
, dyn
)) {
179 res
= memcmp(dyn
->id
, id
, ISIS_SYS_ID_LEN
);
184 if (res
== 0 && dyn
->level
<= level
)
189 * This is the best match, we can stop
197 if (found_dyn
== NULL
198 || memcmp(dyn
->id
, found_dyn
->id
, ISIS_SYS_ID_LEN
) < 0) {