2 * IS-IS Rout(e)ing protocol - isis_events.h
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; if not, write to the Free Software Foundation, Inc.,
20 * 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
35 #include "isisd/dict.h"
36 #include "isisd/include-netbsd/iso.h"
37 #include "isisd/isis_constants.h"
38 #include "isisd/isis_common.h"
39 #include "isisd/isis_flags.h"
40 #include "isisd/isis_circuit.h"
41 #include "isisd/isis_tlv.h"
42 #include "isisd/isis_lsp.h"
43 #include "isisd/isis_pdu.h"
44 #include "isisd/isis_network.h"
45 #include "isisd/isis_misc.h"
46 #include "isisd/isis_constants.h"
47 #include "isisd/isis_adjacency.h"
48 #include "isisd/isis_dr.h"
49 #include "isisd/isisd.h"
50 #include "isisd/isis_csm.h"
51 #include "isisd/isis_events.h"
52 #include "isisd/isis_spf.h"
54 /* debug isis-spf spf-events
55 4w4d: ISIS-Spf (tlt): L2 SPF needed, new adjacency, from 0x609229F4
56 4w4d: ISIS-Spf (tlt): L2, 0000.0000.0042.01-00 TLV contents changed, code 0x2
57 4w4d: ISIS-Spf (tlt): L2, new LSP 0 DEAD.BEEF.0043.00-00
58 4w5d: ISIS-Spf (tlt): L1 SPF needed, periodic SPF, from 0x6091C844
59 4w5d: ISIS-Spf (tlt): L2 SPF needed, periodic SPF, from 0x6091C844
63 isis_event_circuit_state_change (struct isis_circuit *circuit,
64 struct isis_area *area, int up)
66 area->circuit_state_changes++;
68 if (isis->debugs & DEBUG_EVENTS)
69 zlog_debug ("ISIS-Evt (%s) circuit %s", area->area_tag,
73 * Regenerate LSPs this affects
75 lsp_regenerate_schedule (area, IS_LEVEL_1 | IS_LEVEL_2, 0);
81 circuit_commence_level (struct isis_circuit *circuit, int level)
85 if (! circuit->is_passive)
86 THREAD_TIMER_ON (master, circuit->t_send_psnp[0], send_l1_psnp, circuit,
87 isis_jitter (circuit->psnp_interval[0], PSNP_JITTER));
89 if (circuit->circ_type == CIRCUIT_T_BROADCAST)
91 THREAD_TIMER_ON (master, circuit->u.bc.t_run_dr[0], isis_run_dr_l1,
92 circuit, 2 * circuit->hello_interval[0]);
94 THREAD_TIMER_ON (master, circuit->u.bc.t_send_lan_hello[0],
95 send_lan_l1_hello, circuit,
96 isis_jitter (circuit->hello_interval[0],
99 circuit->u.bc.lan_neighs[0] = list_new ();
104 if (! circuit->is_passive)
105 THREAD_TIMER_ON (master, circuit->t_send_psnp[1], send_l2_psnp, circuit,
106 isis_jitter (circuit->psnp_interval[1], PSNP_JITTER));
108 if (circuit->circ_type == CIRCUIT_T_BROADCAST)
110 THREAD_TIMER_ON (master, circuit->u.bc.t_run_dr[1], isis_run_dr_l2,
111 circuit, 2 * circuit->hello_interval[1]);
113 THREAD_TIMER_ON (master, circuit->u.bc.t_send_lan_hello[1],
114 send_lan_l2_hello, circuit,
115 isis_jitter (circuit->hello_interval[1],
118 circuit->u.bc.lan_neighs[1] = list_new ();
126 circuit_resign_level (struct isis_circuit *circuit, int level)
130 THREAD_TIMER_OFF (circuit->t_send_csnp[idx]);
131 THREAD_TIMER_OFF (circuit->t_send_psnp[idx]);
133 if (circuit->circ_type == CIRCUIT_T_BROADCAST)
135 THREAD_TIMER_OFF (circuit->u.bc.t_send_lan_hello[idx]);
136 THREAD_TIMER_OFF (circuit->u.bc.t_run_dr[idx]);
137 THREAD_TIMER_OFF (circuit->u.bc.t_refresh_pseudo_lsp[idx]);
138 circuit->lsp_regenerate_pending[idx] = 0;
139 circuit->u.bc.run_dr_elect[idx] = 0;
140 if (circuit->u.bc.lan_neighs[idx] != NULL) {
141 list_delete (circuit->u.bc.lan_neighs[idx]);
142 circuit->u.bc.lan_neighs[idx] = NULL;
150 isis_circuit_is_type_set (struct isis_circuit *circuit, int newtype)
152 if (circuit->state != C_STATE_UP)
154 circuit->is_type = newtype;
158 if (isis->debugs & DEBUG_EVENTS)
159 zlog_debug ("ISIS-Evt (%s) circuit type change %s -> %s",
160 circuit->area->area_tag,
161 circuit_t2string (circuit->is_type),
162 circuit_t2string (newtype));
164 if (circuit->is_type == newtype)
165 return; /* No change */
167 if (!(newtype & circuit->area->is_type))
169 zlog_err ("ISIS-Evt (%s) circuit type change - invalid level %s because"
170 " area is %s", circuit->area->area_tag,
171 circuit_t2string (newtype),
172 circuit_t2string (circuit->area->is_type));
176 if (! circuit->is_passive)
178 switch (circuit->is_type)
181 if (newtype == IS_LEVEL_2)
182 circuit_resign_level (circuit, 1);
183 circuit_commence_level (circuit, 2);
185 case IS_LEVEL_1_AND_2:
186 if (newtype == IS_LEVEL_1)
187 circuit_resign_level (circuit, 2);
189 circuit_resign_level (circuit, 1);
192 if (newtype == IS_LEVEL_1)
193 circuit_resign_level (circuit, 2);
194 circuit_commence_level (circuit, 1);
201 circuit->is_type = newtype;
202 lsp_regenerate_schedule (circuit->area, IS_LEVEL_1 | IS_LEVEL_2, 0);
207 /* 04/18/2002 by Gwak. */
208 /**************************************************************************
210 * EVENTS for LSP generation
212 * 1) an Adajacency or Circuit Up/Down event
213 * 2) a chnage in Circuit metric
214 * 3) a change in Reachable Address metric
215 * 4) a change in manualAreaAddresses
216 * 5) a change in systemID
217 * 6) a change in DIS status
218 * 7) a chnage in the waiting status
220 * ***********************************************************************
222 * current support event
224 * 1) Adjacency Up/Down event
225 * 6) a change in DIS status
227 * ***********************************************************************/
230 isis_event_adjacency_state_change (struct isis_adjacency *adj, int newstate)
232 /* adjacency state change event.
233 * - the only proto-type was supported */
235 /* invalid arguments */
236 if (!adj || !adj->circuit || !adj->circuit->area)
239 if (isis->debugs & DEBUG_EVENTS)
240 zlog_debug ("ISIS-Evt (%s) Adjacency State change",
241 adj->circuit->area->area_tag);
243 /* LSP generation again */
244 lsp_regenerate_schedule (adj->circuit->area, IS_LEVEL_1 | IS_LEVEL_2, 0);
249 /* events supporting code */
252 isis_event_dis_status_change (struct thread *thread)
254 struct isis_circuit *circuit;
256 circuit = THREAD_ARG (thread);
258 /* invalid arguments */
259 if (!circuit || !circuit->area)
261 if (isis->debugs & DEBUG_EVENTS)
262 zlog_debug ("ISIS-Evt (%s) DIS status change", circuit->area->area_tag);
264 /* LSP generation again */
265 lsp_regenerate_schedule (circuit->area, IS_LEVEL_1 | IS_LEVEL_2, 0);
271 isis_event_auth_failure (char *area_tag, const char *error_string, u_char *sysid)
273 if (isis->debugs & DEBUG_EVENTS)
274 zlog_debug ("ISIS-Evt (%s) Authentication failure %s from %s",
275 area_tag, error_string, sysid_print (sysid));