Annotation of embedaddon/quagga/isisd/isis_events.c, revision 1.1.1.3
1.1 misho 1: /*
2: * IS-IS Rout(e)ing protocol - isis_events.h
3: *
4: * Copyright (C) 2001,2002 Sampo Saaristo
5: * Tampere University of Technology
6: * Institute of Communications Engineering
7: *
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)
11: * any later version.
12: *
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
16: * more details.
17:
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.
21: */
22: #include <zebra.h>
23:
24: #include "log.h"
25: #include "memory.h"
26: #include "if.h"
27: #include "linklist.h"
28: #include "command.h"
29: #include "thread.h"
30: #include "hash.h"
31: #include "prefix.h"
32: #include "stream.h"
1.1.1.2 misho 33: #include "table.h"
1.1 misho 34:
35: #include "isisd/dict.h"
36: #include "isisd/include-netbsd/iso.h"
37: #include "isisd/isis_constants.h"
38: #include "isisd/isis_common.h"
1.1.1.2 misho 39: #include "isisd/isis_flags.h"
1.1 misho 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"
53:
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
60: */
61:
62: void
1.1.1.2 misho 63: isis_event_circuit_state_change (struct isis_circuit *circuit,
64: struct isis_area *area, int up)
1.1 misho 65: {
66: area->circuit_state_changes++;
67:
68: if (isis->debugs & DEBUG_EVENTS)
1.1.1.2 misho 69: zlog_debug ("ISIS-Evt (%s) circuit %s", area->area_tag,
70: up ? "up" : "down");
1.1 misho 71:
72: /*
73: * Regenerate LSPs this affects
74: */
1.1.1.2 misho 75: lsp_regenerate_schedule (area, IS_LEVEL_1 | IS_LEVEL_2, 0);
1.1 misho 76:
77: return;
78: }
79:
1.1.1.2 misho 80: static void
81: area_resign_level (struct isis_area *area, int level)
82: {
83: if (area->lspdb[level - 1])
84: {
85: lsp_db_destroy (area->lspdb[level - 1]);
86: area->lspdb[level - 1] = NULL;
87: }
88: if (area->spftree[level - 1])
89: {
90: isis_spftree_del (area->spftree[level - 1]);
91: area->spftree[level - 1] = NULL;
92: }
93: #ifdef HAVE_IPV6
94: if (area->spftree6[level - 1])
95: {
96: isis_spftree_del (area->spftree6[level - 1]);
97: area->spftree6[level - 1] = NULL;
98: }
99: #endif
100: if (area->route_table[level - 1])
101: {
102: route_table_finish (area->route_table[level - 1]);
103: area->route_table[level - 1] = NULL;
104: }
105: #ifdef HAVE_IPV6
106: if (area->route_table6[level - 1])
107: {
108: route_table_finish (area->route_table6[level - 1]);
109: area->route_table6[level - 1] = NULL;
110: }
111: #endif /* HAVE_IPV6 */
112:
1.1.1.3 ! misho 113: sched_debug("ISIS (%s): Resigned from L%d - canceling LSP regeneration timer.",
! 114: area->area_tag, level);
1.1.1.2 misho 115: THREAD_TIMER_OFF (area->t_lsp_refresh[level - 1]);
1.1.1.3 ! misho 116: area->lsp_regenerate_pending[level - 1] = 0;
1.1.1.2 misho 117: }
118:
1.1 misho 119: void
120: isis_event_system_type_change (struct isis_area *area, int newtype)
121: {
122: struct listnode *node;
123: struct isis_circuit *circuit;
124:
125: if (isis->debugs & DEBUG_EVENTS)
126: zlog_debug ("ISIS-Evt (%s) system type change %s -> %s", area->area_tag,
127: circuit_t2string (area->is_type), circuit_t2string (newtype));
128:
129: if (area->is_type == newtype)
130: return; /* No change */
131:
132: switch (area->is_type)
1.1.1.2 misho 133: {
1.1 misho 134: case IS_LEVEL_1:
1.1.1.2 misho 135: if (newtype == IS_LEVEL_2)
136: area_resign_level (area, IS_LEVEL_1);
137:
1.1 misho 138: if (area->lspdb[1] == NULL)
1.1.1.2 misho 139: area->lspdb[1] = lsp_db_init ();
140: if (area->route_table[1] == NULL)
141: area->route_table[1] = route_table_init ();
142: #ifdef HAVE_IPV6
143: if (area->route_table6[1] == NULL)
144: area->route_table6[1] = route_table_init ();
145: #endif /* HAVE_IPV6 */
1.1 misho 146: break;
1.1.1.2 misho 147:
1.1 misho 148: case IS_LEVEL_1_AND_2:
149: if (newtype == IS_LEVEL_1)
1.1.1.2 misho 150: area_resign_level (area, IS_LEVEL_2);
1.1 misho 151: else
1.1.1.2 misho 152: area_resign_level (area, IS_LEVEL_1);
1.1 misho 153: break;
1.1.1.2 misho 154:
1.1 misho 155: case IS_LEVEL_2:
1.1.1.2 misho 156: if (newtype == IS_LEVEL_1)
157: area_resign_level (area, IS_LEVEL_2);
158:
1.1 misho 159: if (area->lspdb[0] == NULL)
1.1.1.2 misho 160: area->lspdb[0] = lsp_db_init ();
161: if (area->route_table[0] == NULL)
162: area->route_table[0] = route_table_init ();
163: #ifdef HAVE_IPV6
164: if (area->route_table6[0] == NULL)
165: area->route_table6[0] = route_table_init ();
166: #endif /* HAVE_IPV6 */
1.1 misho 167: break;
1.1.1.2 misho 168:
1.1 misho 169: default:
170: break;
1.1.1.2 misho 171: }
1.1 misho 172:
173: area->is_type = newtype;
174:
1.1.1.2 misho 175: /* override circuit's is_type */
176: if (area->is_type != IS_LEVEL_1_AND_2)
177: {
178: for (ALL_LIST_ELEMENTS_RO (area->circuit_list, node, circuit))
179: isis_event_circuit_type_change (circuit, newtype);
180: }
1.1 misho 181:
1.1.1.2 misho 182: spftree_area_init (area);
1.1 misho 183:
1.1.1.2 misho 184: if (newtype & IS_LEVEL_1)
185: lsp_generate (area, IS_LEVEL_1);
186: if (newtype & IS_LEVEL_2)
187: lsp_generate (area, IS_LEVEL_2);
188: lsp_regenerate_schedule (area, IS_LEVEL_1 | IS_LEVEL_2, 1);
1.1 misho 189:
1.1.1.2 misho 190: return;
1.1 misho 191: }
192:
193: static void
194: circuit_commence_level (struct isis_circuit *circuit, int level)
195: {
196: if (level == 1)
197: {
1.1.1.2 misho 198: if (! circuit->is_passive)
199: THREAD_TIMER_ON (master, circuit->t_send_psnp[0], send_l1_psnp, circuit,
200: isis_jitter (circuit->psnp_interval[0], PSNP_JITTER));
1.1 misho 201:
202: if (circuit->circ_type == CIRCUIT_T_BROADCAST)
203: {
204: THREAD_TIMER_ON (master, circuit->u.bc.t_run_dr[0], isis_run_dr_l1,
1.1.1.2 misho 205: circuit, 2 * circuit->hello_interval[0]);
1.1 misho 206:
207: THREAD_TIMER_ON (master, circuit->u.bc.t_send_lan_hello[0],
208: send_lan_l1_hello, circuit,
209: isis_jitter (circuit->hello_interval[0],
210: IIH_JITTER));
211:
212: circuit->u.bc.lan_neighs[0] = list_new ();
213: }
214: }
215: else
216: {
1.1.1.2 misho 217: if (! circuit->is_passive)
218: THREAD_TIMER_ON (master, circuit->t_send_psnp[1], send_l2_psnp, circuit,
219: isis_jitter (circuit->psnp_interval[1], PSNP_JITTER));
1.1 misho 220:
221: if (circuit->circ_type == CIRCUIT_T_BROADCAST)
222: {
223: THREAD_TIMER_ON (master, circuit->u.bc.t_run_dr[1], isis_run_dr_l2,
224: circuit, 2 * circuit->hello_interval[1]);
225:
226: THREAD_TIMER_ON (master, circuit->u.bc.t_send_lan_hello[1],
227: send_lan_l2_hello, circuit,
228: isis_jitter (circuit->hello_interval[1],
229: IIH_JITTER));
230:
231: circuit->u.bc.lan_neighs[1] = list_new ();
232: }
233: }
234:
235: return;
236: }
237:
238: static void
239: circuit_resign_level (struct isis_circuit *circuit, int level)
240: {
241: int idx = level - 1;
242:
243: THREAD_TIMER_OFF (circuit->t_send_csnp[idx]);
244: THREAD_TIMER_OFF (circuit->t_send_psnp[idx]);
245:
246: if (circuit->circ_type == CIRCUIT_T_BROADCAST)
247: {
248: THREAD_TIMER_OFF (circuit->u.bc.t_send_lan_hello[idx]);
249: THREAD_TIMER_OFF (circuit->u.bc.t_run_dr[idx]);
250: THREAD_TIMER_OFF (circuit->u.bc.t_refresh_pseudo_lsp[idx]);
1.1.1.3 ! misho 251: circuit->lsp_regenerate_pending[idx] = 0;
1.1 misho 252: circuit->u.bc.run_dr_elect[idx] = 0;
1.1.1.2 misho 253: list_delete (circuit->u.bc.lan_neighs[idx]);
254: circuit->u.bc.lan_neighs[idx] = NULL;
1.1 misho 255: }
256:
257: return;
258: }
259:
260: void
261: isis_event_circuit_type_change (struct isis_circuit *circuit, int newtype)
262: {
1.1.1.2 misho 263: if (circuit->state != C_STATE_UP)
264: {
265: circuit->is_type = newtype;
266: return;
267: }
1.1 misho 268:
269: if (isis->debugs & DEBUG_EVENTS)
270: zlog_debug ("ISIS-Evt (%s) circuit type change %s -> %s",
271: circuit->area->area_tag,
1.1.1.2 misho 272: circuit_t2string (circuit->is_type),
1.1 misho 273: circuit_t2string (newtype));
274:
1.1.1.2 misho 275: if (circuit->is_type == newtype)
1.1 misho 276: return; /* No change */
277:
278: if (!(newtype & circuit->area->is_type))
279: {
280: zlog_err ("ISIS-Evt (%s) circuit type change - invalid level %s because"
281: " area is %s", circuit->area->area_tag,
282: circuit_t2string (newtype),
283: circuit_t2string (circuit->area->is_type));
284: return;
285: }
286:
1.1.1.3 ! misho 287: if (! circuit->is_passive)
1.1 misho 288: {
1.1.1.3 ! misho 289: switch (circuit->is_type)
! 290: {
! 291: case IS_LEVEL_1:
! 292: if (newtype == IS_LEVEL_2)
! 293: circuit_resign_level (circuit, 1);
! 294: circuit_commence_level (circuit, 2);
! 295: break;
! 296: case IS_LEVEL_1_AND_2:
! 297: if (newtype == IS_LEVEL_1)
! 298: circuit_resign_level (circuit, 2);
! 299: else
! 300: circuit_resign_level (circuit, 1);
! 301: break;
! 302: case IS_LEVEL_2:
! 303: if (newtype == IS_LEVEL_1)
! 304: circuit_resign_level (circuit, 2);
! 305: circuit_commence_level (circuit, 1);
! 306: break;
! 307: default:
! 308: break;
! 309: }
1.1 misho 310: }
311:
1.1.1.2 misho 312: circuit->is_type = newtype;
313: lsp_regenerate_schedule (circuit->area, IS_LEVEL_1 | IS_LEVEL_2, 0);
1.1 misho 314:
315: return;
316: }
317:
318: /* 04/18/2002 by Gwak. */
319: /**************************************************************************
320: *
321: * EVENTS for LSP generation
322: *
323: * 1) an Adajacency or Circuit Up/Down event
324: * 2) a chnage in Circuit metric
325: * 3) a change in Reachable Address metric
326: * 4) a change in manualAreaAddresses
327: * 5) a change in systemID
328: * 6) a change in DIS status
329: * 7) a chnage in the waiting status
330: *
331: * ***********************************************************************
332: *
333: * current support event
334: *
335: * 1) Adjacency Up/Down event
336: * 6) a change in DIS status
337: *
338: * ***********************************************************************/
339:
340: void
341: isis_event_adjacency_state_change (struct isis_adjacency *adj, int newstate)
342: {
343: /* adjacency state change event.
344: * - the only proto-type was supported */
345:
346: /* invalid arguments */
347: if (!adj || !adj->circuit || !adj->circuit->area)
348: return;
349:
350: if (isis->debugs & DEBUG_EVENTS)
351: zlog_debug ("ISIS-Evt (%s) Adjacency State change",
352: adj->circuit->area->area_tag);
353:
354: /* LSP generation again */
1.1.1.2 misho 355: lsp_regenerate_schedule (adj->circuit->area, IS_LEVEL_1 | IS_LEVEL_2, 0);
1.1 misho 356:
357: return;
358: }
359:
360: /* events supporting code */
361:
362: int
363: isis_event_dis_status_change (struct thread *thread)
364: {
365: struct isis_circuit *circuit;
366:
367: circuit = THREAD_ARG (thread);
368:
369: /* invalid arguments */
370: if (!circuit || !circuit->area)
371: return 0;
372: if (isis->debugs & DEBUG_EVENTS)
373: zlog_debug ("ISIS-Evt (%s) DIS status change", circuit->area->area_tag);
374:
375: /* LSP generation again */
1.1.1.2 misho 376: lsp_regenerate_schedule (circuit->area, IS_LEVEL_1 | IS_LEVEL_2, 0);
1.1 misho 377:
378: return 0;
379: }
380:
381: void
382: isis_event_auth_failure (char *area_tag, const char *error_string, u_char *sysid)
383: {
384: if (isis->debugs & DEBUG_EVENTS)
385: zlog_debug ("ISIS-Evt (%s) Authentication failure %s from %s",
386: area_tag, error_string, sysid_print (sysid));
387:
388: return;
389: }
FreeBSD-CVSweb <freebsd-cvsweb@FreeBSD.org>
![[BACK]](/icons/cvsweb/back.gif){kind=icon}
Return to isis_events.c CVS log ![[TXT]](/icons/cvsweb/text.gif){kind=icon}
![[DIR]](/icons/cvsweb/dir.gif){kind=icon}
Up to [ELWIX - Embedded LightWeight unIX -] / embedaddon / quagga / isisd