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1 | /* | |
2 | Copyright 2011 by Matthieu Boutier and Juliusz Chroboczek | |
3 | ||
4 | Permission is hereby granted, free of charge, to any person obtaining a copy | |
5 | of this software and associated documentation files (the "Software"), to deal | |
6 | in the Software without restriction, including without limitation the rights | |
7 | to use, copy, modify, merge, publish, distribute, sublicense, and/or sell | |
8 | copies of the Software, and to permit persons to whom the Software is | |
9 | furnished to do so, subject to the following conditions: | |
10 | ||
11 | The above copyright notice and this permission notice shall be included in | |
12 | all copies or substantial portions of the Software. | |
13 | ||
14 | THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR | |
15 | IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, | |
16 | FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE | |
17 | AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER | |
18 | LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, | |
19 | OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN | |
20 | THE SOFTWARE. | |
21 | */ | |
22 | ||
23 | #include <zebra.h> | |
24 | #include "memory.h" | |
25 | #include "log.h" | |
26 | #include "command.h" | |
27 | #include "prefix.h" | |
28 | #include "vector.h" | |
29 | #include "distribute.h" | |
30 | #include "lib_errors.h" | |
31 | ||
32 | #include "babel_main.h" | |
33 | #include "util.h" | |
34 | #include "kernel.h" | |
35 | #include "babel_interface.h" | |
36 | #include "message.h" | |
37 | #include "route.h" | |
38 | #include "babel_zebra.h" | |
39 | #include "neighbour.h" | |
40 | #include "route.h" | |
41 | #include "xroute.h" | |
42 | #include "babel_memory.h" | |
43 | #include "babel_errors.h" | |
44 | ||
45 | #define IS_ENABLE(ifp) (babel_enable_if_lookup(ifp->name) >= 0) | |
46 | ||
47 | static int babel_enable_if_lookup (const char *ifname); | |
48 | static int babel_enable_if_add (const char *ifname); | |
49 | static int babel_enable_if_delete (const char *ifname); | |
50 | static int interface_recalculate(struct interface *ifp); | |
51 | static int interface_reset(struct interface *ifp); | |
52 | static int babel_if_new_hook (struct interface *ifp); | |
53 | static int babel_if_delete_hook (struct interface *ifp); | |
54 | static int interface_config_write (struct vty *vty); | |
55 | static babel_interface_nfo * babel_interface_allocate (void); | |
56 | static void babel_interface_free (babel_interface_nfo *bi); | |
57 | ||
58 | ||
59 | static vector babel_enable_if; /* enable interfaces (by cmd). */ | |
60 | static struct cmd_node babel_interface_node = /* babeld's interface node. */ | |
61 | { | |
62 | INTERFACE_NODE, | |
63 | "%s(config-if)# ", | |
64 | 1 /* VTYSH */ | |
65 | }; | |
66 | ||
67 | ||
68 | int | |
69 | babel_interface_up (int cmd, struct zclient *client, zebra_size_t length, vrf_id_t vrf) | |
70 | { | |
71 | struct stream *s = NULL; | |
72 | struct interface *ifp = NULL; | |
73 | ||
74 | debugf(BABEL_DEBUG_IF, "receive a 'interface up'"); | |
75 | ||
76 | s = zclient->ibuf; | |
77 | ifp = zebra_interface_state_read(s, vrf); /* it updates iflist */ | |
78 | ||
79 | if (ifp == NULL) { | |
80 | return 0; | |
81 | } | |
82 | ||
83 | interface_recalculate(ifp); | |
84 | return 0; | |
85 | } | |
86 | ||
87 | int | |
88 | babel_interface_down (int cmd, struct zclient *client, zebra_size_t length, vrf_id_t vrf) | |
89 | { | |
90 | struct stream *s = NULL; | |
91 | struct interface *ifp = NULL; | |
92 | ||
93 | debugf(BABEL_DEBUG_IF, "receive a 'interface down'"); | |
94 | ||
95 | s = zclient->ibuf; | |
96 | ifp = zebra_interface_state_read(s, vrf); /* it updates iflist */ | |
97 | ||
98 | if (ifp == NULL) { | |
99 | return 0; | |
100 | } | |
101 | ||
102 | interface_reset(ifp); | |
103 | return 0; | |
104 | } | |
105 | ||
106 | int | |
107 | babel_interface_add (int cmd, struct zclient *client, zebra_size_t length, vrf_id_t vrf) | |
108 | { | |
109 | struct interface *ifp = NULL; | |
110 | ||
111 | debugf(BABEL_DEBUG_IF, "receive a 'interface add'"); | |
112 | ||
113 | /* read and add the interface in the iflist. */ | |
114 | ifp = zebra_interface_add_read (zclient->ibuf, vrf); | |
115 | ||
116 | if (ifp == NULL) { | |
117 | return 0; | |
118 | } | |
119 | ||
120 | interface_recalculate(ifp); | |
121 | return 0; | |
122 | } | |
123 | ||
124 | int | |
125 | babel_interface_delete (int cmd, struct zclient *client, zebra_size_t length, vrf_id_t vrf) | |
126 | { | |
127 | struct interface *ifp; | |
128 | struct stream *s; | |
129 | ||
130 | debugf(BABEL_DEBUG_IF, "receive a 'interface delete'"); | |
131 | ||
132 | s = zclient->ibuf; | |
133 | ifp = zebra_interface_state_read(s, vrf); /* it updates iflist */ | |
134 | ||
135 | if (ifp == NULL) | |
136 | return 0; | |
137 | ||
138 | if (IS_ENABLE(ifp)) | |
139 | interface_reset(ifp); | |
140 | ||
141 | /* To support pseudo interface do not free interface structure. */ | |
142 | /* if_delete(ifp); */ | |
143 | if_set_index(ifp, IFINDEX_INTERNAL); | |
144 | ||
145 | return 0; | |
146 | } | |
147 | ||
148 | int | |
149 | babel_interface_address_add (int cmd, struct zclient *client, | |
150 | zebra_size_t length, vrf_id_t vrf) | |
151 | { | |
152 | babel_interface_nfo *babel_ifp; | |
153 | struct connected *ifc; | |
154 | struct prefix *prefix; | |
155 | ||
156 | debugf(BABEL_DEBUG_IF, "receive a 'interface address add'"); | |
157 | ||
158 | ifc = zebra_interface_address_read (ZEBRA_INTERFACE_ADDRESS_ADD, | |
159 | zclient->ibuf, vrf); | |
160 | ||
161 | if (ifc == NULL) | |
162 | return 0; | |
163 | ||
164 | prefix = ifc->address; | |
165 | ||
166 | if (prefix->family == AF_INET) { | |
167 | flush_interface_routes(ifc->ifp, 0); | |
168 | babel_ifp = babel_get_if_nfo(ifc->ifp); | |
169 | if (babel_ifp->ipv4 == NULL) { | |
170 | babel_ifp->ipv4 = malloc(4); | |
171 | if (babel_ifp->ipv4 == NULL) { | |
172 | flog_err(EC_BABEL_MEMORY, "not enough memory"); | |
173 | } else { | |
174 | memcpy(babel_ifp->ipv4, &prefix->u.prefix4, 4); | |
175 | } | |
176 | } | |
177 | } | |
178 | ||
179 | send_request(ifc->ifp, NULL, 0); | |
180 | send_update(ifc->ifp, 0, NULL, 0); | |
181 | ||
182 | return 0; | |
183 | } | |
184 | ||
185 | int | |
186 | babel_interface_address_delete (int cmd, struct zclient *client, | |
187 | zebra_size_t length, vrf_id_t vrf) | |
188 | { | |
189 | babel_interface_nfo *babel_ifp; | |
190 | struct connected *ifc; | |
191 | struct prefix *prefix; | |
192 | ||
193 | debugf(BABEL_DEBUG_IF, "receive a 'interface address delete'"); | |
194 | ||
195 | ifc = zebra_interface_address_read (ZEBRA_INTERFACE_ADDRESS_DELETE, | |
196 | zclient->ibuf, vrf); | |
197 | ||
198 | if (ifc == NULL) | |
199 | return 0; | |
200 | ||
201 | prefix = ifc->address; | |
202 | ||
203 | if (prefix->family == AF_INET) { | |
204 | flush_interface_routes(ifc->ifp, 0); | |
205 | babel_ifp = babel_get_if_nfo(ifc->ifp); | |
206 | if (babel_ifp->ipv4 != NULL | |
207 | && memcmp(babel_ifp->ipv4, &prefix->u.prefix4, 4) == 0) { | |
208 | free(babel_ifp->ipv4); | |
209 | babel_ifp->ipv4 = NULL; | |
210 | } | |
211 | } | |
212 | ||
213 | send_request(ifc->ifp, NULL, 0); | |
214 | send_update(ifc->ifp, 0, NULL, 0); | |
215 | ||
216 | return 0; | |
217 | } | |
218 | ||
219 | /* Lookup function. */ | |
220 | static int | |
221 | babel_enable_if_lookup (const char *ifname) | |
222 | { | |
223 | unsigned int i; | |
224 | char *str; | |
225 | ||
226 | for (i = 0; i < vector_active (babel_enable_if); i++) | |
227 | if ((str = vector_slot (babel_enable_if, i)) != NULL) | |
228 | if (strcmp (str, ifname) == 0) | |
229 | return i; | |
230 | return -1; | |
231 | } | |
232 | ||
233 | /* Add interface to babel_enable_if. */ | |
234 | static int | |
235 | babel_enable_if_add (const char *ifname) | |
236 | { | |
237 | int ret; | |
238 | struct interface *ifp = NULL; | |
239 | ||
240 | ret = babel_enable_if_lookup (ifname); | |
241 | if (ret >= 0) | |
242 | return -1; | |
243 | ||
244 | vector_set (babel_enable_if, strdup (ifname)); | |
245 | ||
246 | ifp = if_lookup_by_name(ifname, VRF_DEFAULT); | |
247 | if (ifp != NULL) | |
248 | interface_recalculate(ifp); | |
249 | ||
250 | return 1; | |
251 | } | |
252 | ||
253 | /* Delete interface from babel_enable_if. */ | |
254 | static int | |
255 | babel_enable_if_delete (const char *ifname) | |
256 | { | |
257 | int babel_enable_if_index; | |
258 | char *str; | |
259 | struct interface *ifp = NULL; | |
260 | ||
261 | babel_enable_if_index = babel_enable_if_lookup (ifname); | |
262 | if (babel_enable_if_index < 0) | |
263 | return -1; | |
264 | ||
265 | str = vector_slot (babel_enable_if, babel_enable_if_index); | |
266 | free (str); | |
267 | vector_unset (babel_enable_if, babel_enable_if_index); | |
268 | ||
269 | ifp = if_lookup_by_name(ifname, VRF_DEFAULT); | |
270 | if (ifp != NULL) | |
271 | interface_reset(ifp); | |
272 | ||
273 | return 1; | |
274 | } | |
275 | ||
276 | /* [Babel Command] Babel enable on specified interface or matched network. */ | |
277 | DEFUN (babel_network, | |
278 | babel_network_cmd, | |
279 | "network IF_OR_ADDR", | |
280 | "Enable Babel protocol on specified interface or network.\n" | |
281 | "Interface or address\n") | |
282 | { | |
283 | int ret; | |
284 | struct prefix p; | |
285 | ||
286 | ret = str2prefix (argv[1]->arg, &p); | |
287 | ||
288 | /* Given string is: */ | |
289 | if (ret) /* an IPv4 or v6 network */ | |
290 | return CMD_ERR_NO_MATCH; /* not implemented yet */ | |
291 | else /* an interface name */ | |
292 | ret = babel_enable_if_add (argv[1]->arg); | |
293 | ||
294 | if (ret < 0) { | |
295 | vty_out (vty, "There is same network configuration %s\n", | |
296 | argv[1]->arg); | |
297 | return CMD_WARNING; | |
298 | } | |
299 | ||
300 | return CMD_SUCCESS; | |
301 | } | |
302 | ||
303 | /* [Babel Command] Babel enable on specified interface or matched network. */ | |
304 | DEFUN (no_babel_network, | |
305 | no_babel_network_cmd, | |
306 | "no network IF_OR_ADDR", | |
307 | NO_STR | |
308 | "Disable Babel protocol on specified interface or network.\n" | |
309 | "Interface or address\n") | |
310 | { | |
311 | int ret; | |
312 | struct prefix p; | |
313 | ||
314 | ret = str2prefix (argv[2]->arg, &p); | |
315 | ||
316 | /* Given string is: */ | |
317 | if (ret) /* an IPv4 or v6 network */ | |
318 | return CMD_ERR_NO_MATCH; /* not implemented yet */ | |
319 | else /* an interface name */ | |
320 | ret = babel_enable_if_delete (argv[2]->arg); | |
321 | ||
322 | if (ret < 0) { | |
323 | vty_out (vty, "can't find network %s\n",argv[2]->arg); | |
324 | return CMD_WARNING_CONFIG_FAILED; | |
325 | } | |
326 | ||
327 | return CMD_SUCCESS; | |
328 | } | |
329 | ||
330 | /* There are a number of interface parameters that must be changed when | |
331 | an interface becomes wired/wireless. In Quagga, they cannot be | |
332 | configured separately. */ | |
333 | ||
334 | static void | |
335 | babel_set_wired_internal(babel_interface_nfo *babel_ifp, int wired) | |
336 | { | |
337 | if(wired) { | |
338 | babel_ifp->flags |= BABEL_IF_WIRED; | |
339 | babel_ifp->flags |= BABEL_IF_SPLIT_HORIZON; | |
340 | babel_ifp->cost = BABEL_DEFAULT_RXCOST_WIRED; | |
341 | babel_ifp->channel = BABEL_IF_CHANNEL_NONINTERFERING; | |
342 | babel_ifp->flags &= ~BABEL_IF_LQ; | |
343 | } else { | |
344 | babel_ifp->flags &= ~BABEL_IF_WIRED; | |
345 | babel_ifp->flags &= ~BABEL_IF_SPLIT_HORIZON; | |
346 | babel_ifp->cost = BABEL_DEFAULT_RXCOST_WIRELESS; | |
347 | babel_ifp->channel = BABEL_IF_CHANNEL_INTERFERING; | |
348 | babel_ifp->flags |= BABEL_IF_LQ; | |
349 | } | |
350 | ||
351 | } | |
352 | ||
353 | /* [Interface Command] Tell the interface is wire. */ | |
354 | DEFUN (babel_set_wired, | |
355 | babel_set_wired_cmd, | |
356 | "babel wired", | |
357 | "Babel interface commands\n" | |
358 | "Enable wired optimizations\n") | |
359 | { | |
360 | VTY_DECLVAR_CONTEXT(interface, ifp); | |
361 | babel_interface_nfo *babel_ifp; | |
362 | ||
363 | babel_ifp = babel_get_if_nfo(ifp); | |
364 | ||
365 | assert (babel_ifp != NULL); | |
366 | babel_set_wired_internal(babel_ifp, 1); | |
367 | return CMD_SUCCESS; | |
368 | } | |
369 | ||
370 | /* [Interface Command] Tell the interface is wireless (default). */ | |
371 | DEFUN (babel_set_wireless, | |
372 | babel_set_wireless_cmd, | |
373 | "babel wireless", | |
374 | "Babel interface commands\n" | |
375 | "Disable wired optimizations (assume wireless)\n") | |
376 | { | |
377 | VTY_DECLVAR_CONTEXT(interface, ifp); | |
378 | babel_interface_nfo *babel_ifp; | |
379 | ||
380 | babel_ifp = babel_get_if_nfo(ifp); | |
381 | ||
382 | assert (babel_ifp != NULL); | |
383 | babel_set_wired_internal(babel_ifp, 0); | |
384 | return CMD_SUCCESS; | |
385 | } | |
386 | ||
387 | /* [Interface Command] Enable split horizon. */ | |
388 | DEFUN (babel_split_horizon, | |
389 | babel_split_horizon_cmd, | |
390 | "babel split-horizon", | |
391 | "Babel interface commands\n" | |
392 | "Enable split horizon processing\n") | |
393 | { | |
394 | VTY_DECLVAR_CONTEXT(interface, ifp); | |
395 | babel_interface_nfo *babel_ifp; | |
396 | ||
397 | babel_ifp = babel_get_if_nfo(ifp); | |
398 | ||
399 | assert (babel_ifp != NULL); | |
400 | babel_ifp->flags |= BABEL_IF_SPLIT_HORIZON; | |
401 | return CMD_SUCCESS; | |
402 | } | |
403 | ||
404 | /* [Interface Command] Disable split horizon (default). */ | |
405 | DEFUN (no_babel_split_horizon, | |
406 | no_babel_split_horizon_cmd, | |
407 | "no babel split-horizon", | |
408 | NO_STR | |
409 | "Babel interface commands\n" | |
410 | "Disable split horizon processing\n") | |
411 | { | |
412 | VTY_DECLVAR_CONTEXT(interface, ifp); | |
413 | babel_interface_nfo *babel_ifp; | |
414 | ||
415 | babel_ifp = babel_get_if_nfo(ifp); | |
416 | ||
417 | assert (babel_ifp != NULL); | |
418 | babel_ifp->flags &= ~BABEL_IF_SPLIT_HORIZON; | |
419 | return CMD_SUCCESS; | |
420 | } | |
421 | ||
422 | /* [Interface Command]. */ | |
423 | DEFUN (babel_set_hello_interval, | |
424 | babel_set_hello_interval_cmd, | |
425 | "babel hello-interval (20-655340)", | |
426 | "Babel interface commands\n" | |
427 | "Time between scheduled hellos\n" | |
428 | "Milliseconds\n") | |
429 | { | |
430 | VTY_DECLVAR_CONTEXT(interface, ifp); | |
431 | babel_interface_nfo *babel_ifp; | |
432 | int interval; | |
433 | ||
434 | interval = strtoul(argv[2]->arg, NULL, 10); | |
435 | ||
436 | babel_ifp = babel_get_if_nfo(ifp); | |
437 | assert (babel_ifp != NULL); | |
438 | ||
439 | babel_ifp->hello_interval = interval; | |
440 | return CMD_SUCCESS; | |
441 | } | |
442 | ||
443 | /* [Interface Command]. */ | |
444 | DEFUN (babel_set_update_interval, | |
445 | babel_set_update_interval_cmd, | |
446 | "babel update-interval (20-655340)", | |
447 | "Babel interface commands\n" | |
448 | "Time between scheduled updates\n" | |
449 | "Milliseconds\n") | |
450 | { | |
451 | VTY_DECLVAR_CONTEXT(interface, ifp); | |
452 | babel_interface_nfo *babel_ifp; | |
453 | int interval; | |
454 | ||
455 | interval = strtoul(argv[2]->arg, NULL, 10); | |
456 | ||
457 | babel_ifp = babel_get_if_nfo(ifp); | |
458 | assert (babel_ifp != NULL); | |
459 | ||
460 | babel_ifp->update_interval = interval; | |
461 | return CMD_SUCCESS; | |
462 | } | |
463 | ||
464 | DEFUN (babel_set_rxcost, | |
465 | babel_set_rxcost_cmd, | |
466 | "babel rxcost (1-65534)", | |
467 | "Babel interface commands\n" | |
468 | "Rxcost multiplier\n" | |
469 | "Units\n") | |
470 | { | |
471 | VTY_DECLVAR_CONTEXT(interface, ifp); | |
472 | babel_interface_nfo *babel_ifp; | |
473 | int rxcost; | |
474 | ||
475 | rxcost = strtoul(argv[2]->arg, NULL, 10); | |
476 | ||
477 | babel_ifp = babel_get_if_nfo(ifp); | |
478 | assert (babel_ifp != NULL); | |
479 | ||
480 | babel_ifp->cost = rxcost; | |
481 | return CMD_SUCCESS; | |
482 | } | |
483 | ||
484 | DEFUN (babel_set_rtt_decay, | |
485 | babel_set_rtt_decay_cmd, | |
486 | "babel rtt-decay (1-256)", | |
487 | "Babel interface commands\n" | |
488 | "Decay factor for exponential moving average of RTT samples\n" | |
489 | "Units of 1/256\n") | |
490 | { | |
491 | VTY_DECLVAR_CONTEXT(interface, ifp); | |
492 | babel_interface_nfo *babel_ifp; | |
493 | int decay; | |
494 | ||
495 | decay = strtoul(argv[2]->arg, NULL, 10); | |
496 | ||
497 | babel_ifp = babel_get_if_nfo(ifp); | |
498 | assert (babel_ifp != NULL); | |
499 | ||
500 | babel_ifp->rtt_decay = decay; | |
501 | return CMD_SUCCESS; | |
502 | } | |
503 | ||
504 | DEFUN (babel_set_rtt_min, | |
505 | babel_set_rtt_min_cmd, | |
506 | "babel rtt-min (1-65535)", | |
507 | "Babel interface commands\n" | |
508 | "Minimum RTT starting for increasing cost\n" | |
509 | "Milliseconds\n") | |
510 | { | |
511 | VTY_DECLVAR_CONTEXT(interface, ifp); | |
512 | babel_interface_nfo *babel_ifp; | |
513 | int rtt; | |
514 | ||
515 | rtt = strtoul(argv[2]->arg, NULL, 10); | |
516 | ||
517 | babel_ifp = babel_get_if_nfo(ifp); | |
518 | assert (babel_ifp != NULL); | |
519 | ||
520 | babel_ifp->rtt_min = rtt; | |
521 | return CMD_SUCCESS; | |
522 | } | |
523 | ||
524 | DEFUN (babel_set_rtt_max, | |
525 | babel_set_rtt_max_cmd, | |
526 | "babel rtt-max (1-65535)", | |
527 | "Babel interface commands\n" | |
528 | "Maximum RTT\n" | |
529 | "Milliseconds\n") | |
530 | { | |
531 | VTY_DECLVAR_CONTEXT(interface, ifp); | |
532 | babel_interface_nfo *babel_ifp; | |
533 | int rtt; | |
534 | ||
535 | rtt = strtoul(argv[2]->arg, NULL, 10); | |
536 | ||
537 | babel_ifp = babel_get_if_nfo(ifp); | |
538 | assert (babel_ifp != NULL); | |
539 | ||
540 | babel_ifp->rtt_max = rtt; | |
541 | return CMD_SUCCESS; | |
542 | } | |
543 | ||
544 | DEFUN (babel_set_max_rtt_penalty, | |
545 | babel_set_max_rtt_penalty_cmd, | |
546 | "babel max-rtt-penalty (0-65535)", | |
547 | "Babel interface commands\n" | |
548 | "Maximum additional cost due to RTT\n" | |
549 | "Milliseconds\n") | |
550 | { | |
551 | VTY_DECLVAR_CONTEXT(interface, ifp); | |
552 | babel_interface_nfo *babel_ifp; | |
553 | int penalty; | |
554 | ||
555 | penalty = strtoul(argv[2]->arg, NULL, 10); | |
556 | ||
557 | babel_ifp = babel_get_if_nfo(ifp); | |
558 | assert (babel_ifp != NULL); | |
559 | ||
560 | babel_ifp->max_rtt_penalty = penalty; | |
561 | return CMD_SUCCESS; | |
562 | } | |
563 | ||
564 | DEFUN (babel_set_enable_timestamps, | |
565 | babel_set_enable_timestamps_cmd, | |
566 | "babel enable-timestamps", | |
567 | "Babel interface commands\n" | |
568 | "Enable timestamps\n") | |
569 | { | |
570 | VTY_DECLVAR_CONTEXT(interface, ifp); | |
571 | babel_interface_nfo *babel_ifp; | |
572 | ||
573 | babel_ifp = babel_get_if_nfo(ifp); | |
574 | assert (babel_ifp != NULL); | |
575 | ||
576 | babel_ifp->flags |= BABEL_IF_TIMESTAMPS; | |
577 | return CMD_SUCCESS; | |
578 | } | |
579 | ||
580 | DEFUN (no_babel_set_enable_timestamps, | |
581 | no_babel_set_enable_timestamps_cmd, | |
582 | "no babel enable-timestamps", | |
583 | NO_STR | |
584 | "Babel interface commands\n" | |
585 | "Disable timestamps\n") | |
586 | { | |
587 | VTY_DECLVAR_CONTEXT(interface, ifp); | |
588 | babel_interface_nfo *babel_ifp; | |
589 | ||
590 | babel_ifp = babel_get_if_nfo(ifp); | |
591 | assert (babel_ifp != NULL); | |
592 | ||
593 | babel_ifp->flags &= ~BABEL_IF_TIMESTAMPS; | |
594 | return CMD_SUCCESS; | |
595 | } | |
596 | ||
597 | DEFUN (babel_set_channel, | |
598 | babel_set_channel_cmd, | |
599 | "babel channel (1-254)", | |
600 | "Babel interface commands\n" | |
601 | "Channel number for diversity routing\n" | |
602 | "Number\n") | |
603 | { | |
604 | VTY_DECLVAR_CONTEXT(interface, ifp); | |
605 | babel_interface_nfo *babel_ifp; | |
606 | int channel; | |
607 | ||
608 | channel = strtoul(argv[2]->arg, NULL, 10); | |
609 | ||
610 | babel_ifp = babel_get_if_nfo(ifp); | |
611 | assert (babel_ifp != NULL); | |
612 | ||
613 | babel_ifp->channel = channel; | |
614 | return CMD_SUCCESS; | |
615 | } | |
616 | ||
617 | DEFUN (babel_set_channel_interfering, | |
618 | babel_set_channel_interfering_cmd, | |
619 | "babel channel interfering", | |
620 | "Babel interface commands\n" | |
621 | "Channel number for diversity routing\n" | |
622 | "Mark channel as interfering\n") | |
623 | { | |
624 | VTY_DECLVAR_CONTEXT(interface, ifp); | |
625 | babel_interface_nfo *babel_ifp; | |
626 | ||
627 | babel_ifp = babel_get_if_nfo(ifp); | |
628 | assert (babel_ifp != NULL); | |
629 | ||
630 | babel_ifp->channel = BABEL_IF_CHANNEL_INTERFERING; | |
631 | return CMD_SUCCESS; | |
632 | } | |
633 | ||
634 | DEFUN (babel_set_channel_noninterfering, | |
635 | babel_set_channel_noninterfering_cmd, | |
636 | "babel channel noninterfering", | |
637 | "Babel interface commands\n" | |
638 | "Channel number for diversity routing\n" | |
639 | "Mark channel as noninterfering\n") | |
640 | { | |
641 | VTY_DECLVAR_CONTEXT(interface, ifp); | |
642 | babel_interface_nfo *babel_ifp; | |
643 | ||
644 | babel_ifp = babel_get_if_nfo(ifp); | |
645 | assert (babel_ifp != NULL); | |
646 | ||
647 | babel_ifp->channel = BABEL_IF_CHANNEL_NONINTERFERING; | |
648 | return CMD_SUCCESS; | |
649 | } | |
650 | ||
651 | /* This should be no more than half the hello interval, so that hellos | |
652 | aren't sent late. The result is in milliseconds. */ | |
653 | unsigned | |
654 | jitter(babel_interface_nfo *babel_ifp, int urgent) | |
655 | { | |
656 | unsigned interval = babel_ifp->hello_interval; | |
657 | if(urgent) | |
658 | interval = MIN(interval, 100); | |
659 | else | |
660 | interval = MIN(interval, 4000); | |
661 | return roughly(interval) / 4; | |
662 | } | |
663 | ||
664 | unsigned | |
665 | update_jitter(babel_interface_nfo *babel_ifp, int urgent) | |
666 | { | |
667 | unsigned interval = babel_ifp->hello_interval; | |
668 | if(urgent) | |
669 | interval = MIN(interval, 100); | |
670 | else | |
671 | interval = MIN(interval, 4000); | |
672 | return roughly(interval); | |
673 | } | |
674 | ||
675 | /* calculate babeld's specific datas of an interface (change when the interface | |
676 | change) */ | |
677 | static int | |
678 | interface_recalculate(struct interface *ifp) | |
679 | { | |
680 | babel_interface_nfo *babel_ifp = babel_get_if_nfo(ifp); | |
681 | unsigned char *tmp = NULL; | |
682 | int mtu, rc; | |
683 | struct ipv6_mreq mreq; | |
684 | ||
685 | if (!IS_ENABLE(ifp)) | |
686 | return -1; | |
687 | ||
688 | if (!if_is_operative(ifp) || !CHECK_FLAG(ifp->flags, IFF_RUNNING)) { | |
689 | interface_reset(ifp); | |
690 | return -1; | |
691 | } | |
692 | ||
693 | babel_ifp->flags |= BABEL_IF_IS_UP; | |
694 | ||
695 | mtu = MIN(ifp->mtu, ifp->mtu6); | |
696 | ||
697 | /* We need to be able to fit at least two messages into a packet, | |
698 | so MTUs below 116 require lower layer fragmentation. */ | |
699 | /* In IPv6, the minimum MTU is 1280, and every host must be able | |
700 | to reassemble up to 1500 bytes, but I'd rather not rely on this. */ | |
701 | if(mtu < 128) { | |
702 | debugf(BABEL_DEBUG_IF, "Suspiciously low MTU %d on interface %s (%d).", | |
703 | mtu, ifp->name, ifp->ifindex); | |
704 | mtu = 128; | |
705 | } | |
706 | ||
707 | /* 4 for Babel header; 40 for IPv6 header, 8 for UDP header, 12 for good luck. */ | |
708 | babel_ifp->bufsize = mtu - 4 - 60; | |
709 | tmp = babel_ifp->sendbuf; | |
710 | babel_ifp->sendbuf = realloc(babel_ifp->sendbuf, babel_ifp->bufsize); | |
711 | if(babel_ifp->sendbuf == NULL) { | |
712 | flog_err(EC_BABEL_MEMORY, "Couldn't reallocate sendbuf."); | |
713 | free(tmp); | |
714 | babel_ifp->bufsize = 0; | |
715 | return -1; | |
716 | } | |
717 | tmp = NULL; | |
718 | ||
719 | rc = resize_receive_buffer(mtu); | |
720 | if(rc < 0) | |
721 | zlog_warn("couldn't resize " | |
722 | "receive buffer for interface %s (%d) (%d bytes).\n", | |
723 | ifp->name, ifp->ifindex, mtu); | |
724 | ||
725 | memset(&mreq, 0, sizeof(mreq)); | |
726 | memcpy(&mreq.ipv6mr_multiaddr, protocol_group, 16); | |
727 | mreq.ipv6mr_interface = ifp->ifindex; | |
728 | ||
729 | rc = setsockopt(protocol_socket, IPPROTO_IPV6, IPV6_JOIN_GROUP, | |
730 | (char*)&mreq, sizeof(mreq)); | |
731 | if(rc < 0) { | |
732 | flog_err_sys(EC_LIB_SOCKET, | |
733 | "setsockopt(IPV6_JOIN_GROUP) on interface '%s': %s", | |
734 | ifp->name, safe_strerror(errno)); | |
735 | /* This is probably due to a missing link-local address, | |
736 | so down this interface, and wait until the main loop | |
737 | tries to up it again. */ | |
738 | interface_reset(ifp); | |
739 | return -1; | |
740 | } | |
741 | ||
742 | set_timeout(&babel_ifp->hello_timeout, babel_ifp->hello_interval); | |
743 | set_timeout(&babel_ifp->update_timeout, babel_ifp->update_interval); | |
744 | send_hello(ifp); | |
745 | send_request(ifp, NULL, 0); | |
746 | ||
747 | update_interface_metric(ifp); | |
748 | ||
749 | debugf(BABEL_DEBUG_COMMON, | |
750 | "Upped interface %s (%s, cost=%d, channel=%d%s).", | |
751 | ifp->name, | |
752 | (babel_ifp->flags & BABEL_IF_WIRED) ? "wired" : "wireless", | |
753 | babel_ifp->cost, | |
754 | babel_ifp->channel, | |
755 | babel_ifp->ipv4 ? ", IPv4" : ""); | |
756 | ||
757 | if(rc > 0) | |
758 | send_update(ifp, 0, NULL, 0); | |
759 | ||
760 | return 1; | |
761 | } | |
762 | ||
763 | /* Reset the interface as it was new: it's not removed from the interface list, | |
764 | and may be considered as a upped interface. */ | |
765 | static int | |
766 | interface_reset(struct interface *ifp) | |
767 | { | |
768 | int rc; | |
769 | struct ipv6_mreq mreq; | |
770 | babel_interface_nfo *babel_ifp = babel_get_if_nfo(ifp); | |
771 | ||
772 | if (!(babel_ifp->flags & BABEL_IF_IS_UP)) | |
773 | return 0; | |
774 | ||
775 | debugf(BABEL_DEBUG_IF, "interface reset: %s", ifp->name); | |
776 | babel_ifp->flags &= ~BABEL_IF_IS_UP; | |
777 | ||
778 | flush_interface_routes(ifp, 0); | |
779 | babel_ifp->buffered = 0; | |
780 | babel_ifp->bufsize = 0; | |
781 | free(babel_ifp->sendbuf); | |
782 | babel_ifp->num_buffered_updates = 0; | |
783 | babel_ifp->update_bufsize = 0; | |
784 | if(babel_ifp->buffered_updates) | |
785 | free(babel_ifp->buffered_updates); | |
786 | babel_ifp->buffered_updates = NULL; | |
787 | babel_ifp->sendbuf = NULL; | |
788 | ||
789 | if(ifp->ifindex > 0) { | |
790 | memset(&mreq, 0, sizeof(mreq)); | |
791 | memcpy(&mreq.ipv6mr_multiaddr, protocol_group, 16); | |
792 | mreq.ipv6mr_interface = ifp->ifindex; | |
793 | rc = setsockopt(protocol_socket, IPPROTO_IPV6, IPV6_LEAVE_GROUP, | |
794 | (char*)&mreq, sizeof(mreq)); | |
795 | if(rc < 0) | |
796 | flog_err_sys(EC_LIB_SOCKET, | |
797 | "setsockopt(IPV6_LEAVE_GROUP) on interface '%s': %s", | |
798 | ifp->name, safe_strerror(errno)); | |
799 | } | |
800 | ||
801 | update_interface_metric(ifp); | |
802 | ||
803 | debugf(BABEL_DEBUG_COMMON,"Upped network %s (%s, cost=%d%s).", | |
804 | ifp->name, | |
805 | (babel_ifp->flags & BABEL_IF_WIRED) ? "wired" : "wireless", | |
806 | babel_ifp->cost, | |
807 | babel_ifp->ipv4 ? ", IPv4" : ""); | |
808 | ||
809 | return 1; | |
810 | } | |
811 | ||
812 | /* Send retraction to all, and reset all interfaces statistics. */ | |
813 | void | |
814 | babel_interface_close_all(void) | |
815 | { | |
816 | struct vrf *vrf = vrf_lookup_by_id(VRF_DEFAULT); | |
817 | struct interface *ifp = NULL; | |
818 | ||
819 | FOR_ALL_INTERFACES(vrf, ifp) { | |
820 | if(!if_up(ifp)) | |
821 | continue; | |
822 | send_wildcard_retraction(ifp); | |
823 | /* Make sure that we expire quickly from our neighbours' | |
824 | association caches. */ | |
825 | send_hello_noupdate(ifp, 10); | |
826 | flushbuf(ifp); | |
827 | usleep(roughly(1000)); | |
828 | gettime(&babel_now); | |
829 | } | |
830 | FOR_ALL_INTERFACES(vrf, ifp) { | |
831 | if(!if_up(ifp)) | |
832 | continue; | |
833 | /* Make sure they got it. */ | |
834 | send_wildcard_retraction(ifp); | |
835 | send_hello_noupdate(ifp, 1); | |
836 | flushbuf(ifp); | |
837 | usleep(roughly(10000)); | |
838 | gettime(&babel_now); | |
839 | interface_reset(ifp); | |
840 | } | |
841 | } | |
842 | ||
843 | /* return "true" if address is one of our ipv6 addresses */ | |
844 | int | |
845 | is_interface_ll_address(struct interface *ifp, const unsigned char *address) | |
846 | { | |
847 | struct connected *connected; | |
848 | struct listnode *node; | |
849 | ||
850 | if(!if_up(ifp)) | |
851 | return 0; | |
852 | ||
853 | FOR_ALL_INTERFACES_ADDRESSES(ifp, connected, node) { | |
854 | if(connected->address->family == AF_INET6 && | |
855 | memcmp(&connected->address->u.prefix6, address, 16) == 0) | |
856 | return 1; | |
857 | } | |
858 | ||
859 | return 0; | |
860 | } | |
861 | ||
862 | static void | |
863 | show_babel_interface_sub (struct vty *vty, struct interface *ifp) | |
864 | { | |
865 | int is_up; | |
866 | babel_interface_nfo *babel_ifp; | |
867 | ||
868 | vty_out (vty, "%s is %s\n", ifp->name, | |
869 | ((is_up = if_is_operative(ifp)) ? "up" : "down")); | |
870 | vty_out (vty, " ifindex %u, MTU %u bytes %s\n", | |
871 | ifp->ifindex, MIN(ifp->mtu, ifp->mtu6), if_flag_dump(ifp->flags)); | |
872 | ||
873 | if (!IS_ENABLE(ifp)) | |
874 | { | |
875 | vty_out (vty, " Babel protocol is not enabled on this interface\n"); | |
876 | return; | |
877 | } | |
878 | if (!is_up) | |
879 | { | |
880 | vty_out (vty, | |
881 | " Babel protocol is enabled, but not running on this interface\n"); | |
882 | return; | |
883 | } | |
884 | babel_ifp = babel_get_if_nfo (ifp); | |
885 | vty_out (vty, " Babel protocol is running on this interface\n"); | |
886 | vty_out (vty, " Operating mode is \"%s\"\n", | |
887 | CHECK_FLAG(babel_ifp->flags, BABEL_IF_WIRED) ? "wired" : "wireless"); | |
888 | vty_out (vty, " Split horizon mode is %s\n", | |
889 | CHECK_FLAG(babel_ifp->flags, BABEL_IF_SPLIT_HORIZON) ? "On" : "Off"); | |
890 | vty_out (vty, " Hello interval is %u ms\n", babel_ifp->hello_interval); | |
891 | vty_out (vty, " Update interval is %u ms\n", babel_ifp->update_interval); | |
892 | vty_out (vty, " Rxcost multiplier is %u\n", babel_ifp->cost); | |
893 | } | |
894 | ||
895 | DEFUN (show_babel_interface, | |
896 | show_babel_interface_cmd, | |
897 | "show babel interface [IFNAME]", | |
898 | SHOW_STR | |
899 | "Babel information\n" | |
900 | "Interface information\n" | |
901 | "Interface\n") | |
902 | { | |
903 | struct vrf *vrf = vrf_lookup_by_id(VRF_DEFAULT); | |
904 | struct interface *ifp; | |
905 | ||
906 | if (argc == 3) | |
907 | { | |
908 | FOR_ALL_INTERFACES (vrf, ifp) | |
909 | show_babel_interface_sub (vty, ifp); | |
910 | return CMD_SUCCESS; | |
911 | } | |
912 | if ((ifp = if_lookup_by_name (argv[3]->arg, VRF_DEFAULT)) == NULL) | |
913 | { | |
914 | vty_out (vty, "No such interface name\n"); | |
915 | return CMD_WARNING; | |
916 | } | |
917 | show_babel_interface_sub (vty, ifp); | |
918 | return CMD_SUCCESS; | |
919 | } | |
920 | ||
921 | static void | |
922 | show_babel_neighbour_sub (struct vty *vty, struct neighbour *neigh) | |
923 | { | |
924 | vty_out (vty, | |
925 | "Neighbour %s dev %s reach %04x rxcost %d txcost %d " | |
926 | "rtt %s rttcost %d%s.\n", | |
927 | format_address(neigh->address), | |
928 | neigh->ifp->name, | |
929 | neigh->reach, | |
930 | neighbour_rxcost(neigh), | |
931 | neigh->txcost, | |
932 | format_thousands(neigh->rtt), | |
933 | neighbour_rttcost(neigh), | |
934 | if_up(neigh->ifp) ? "" : " (down)"); | |
935 | } | |
936 | ||
937 | DEFUN (show_babel_neighbour, | |
938 | show_babel_neighbour_cmd, | |
939 | "show babel neighbor [IFNAME]", | |
940 | SHOW_STR | |
941 | "Babel information\n" | |
942 | "Print neighbors\n" | |
943 | "Interface\n") | |
944 | { | |
945 | struct neighbour *neigh; | |
946 | struct interface *ifp; | |
947 | ||
948 | if (argc == 3) { | |
949 | FOR_ALL_NEIGHBOURS(neigh) { | |
950 | show_babel_neighbour_sub(vty, neigh); | |
951 | } | |
952 | return CMD_SUCCESS; | |
953 | } | |
954 | if ((ifp = if_lookup_by_name (argv[3]->arg, VRF_DEFAULT)) == NULL) | |
955 | { | |
956 | vty_out (vty, "No such interface name\n"); | |
957 | return CMD_WARNING; | |
958 | } | |
959 | FOR_ALL_NEIGHBOURS(neigh) { | |
960 | if(ifp->ifindex == neigh->ifp->ifindex) { | |
961 | show_babel_neighbour_sub(vty, neigh); | |
962 | } | |
963 | } | |
964 | return CMD_SUCCESS; | |
965 | } | |
966 | ||
967 | static int | |
968 | babel_prefix_eq(struct prefix *prefix, unsigned char *p, int plen) | |
969 | { | |
970 | if(prefix->family == AF_INET6) { | |
971 | if(prefix->prefixlen != plen || | |
972 | memcmp(&prefix->u.prefix6, p, 16) != 0) | |
973 | return 0; | |
974 | } else if(prefix->family == AF_INET) { | |
975 | if(plen < 96 || !v4mapped(p) || prefix->prefixlen != plen - 96 || | |
976 | memcmp(&prefix->u.prefix4, p + 12, 4) != 0) | |
977 | return 0; | |
978 | } else { | |
979 | return 0; | |
980 | } | |
981 | ||
982 | return 1; | |
983 | } | |
984 | ||
985 | static void | |
986 | show_babel_routes_sub(struct babel_route *route, struct vty *vty, | |
987 | struct prefix *prefix) | |
988 | { | |
989 | const unsigned char *nexthop = | |
990 | memcmp(route->nexthop, route->neigh->address, 16) == 0 ? | |
991 | NULL : route->nexthop; | |
992 | char channels[100]; | |
993 | ||
994 | if(prefix && !babel_prefix_eq(prefix, route->src->prefix, route->src->plen)) | |
995 | return; | |
996 | ||
997 | if(route->channels[0] == 0) | |
998 | channels[0] = '\0'; | |
999 | else { | |
1000 | int k, j = 0; | |
1001 | snprintf(channels, 100, " chan ("); | |
1002 | j = strlen(channels); | |
1003 | for(k = 0; k < DIVERSITY_HOPS; k++) { | |
1004 | if(route->channels[k] == 0) | |
1005 | break; | |
1006 | if(k > 0) | |
1007 | channels[j++] = ','; | |
1008 | snprintf(channels + j, 100 - j, "%u", route->channels[k]); | |
1009 | j = strlen(channels); | |
1010 | } | |
1011 | snprintf(channels + j, 100 - j, ")"); | |
1012 | if(k == 0) | |
1013 | channels[0] = '\0'; | |
1014 | } | |
1015 | ||
1016 | vty_out (vty, | |
1017 | "%s metric %d refmetric %d id %s seqno %d%s age %d " | |
1018 | "via %s neigh %s%s%s%s\n", | |
1019 | format_prefix(route->src->prefix, route->src->plen), | |
1020 | route_metric(route), route->refmetric, | |
1021 | format_eui64(route->src->id), | |
1022 | (int)route->seqno, | |
1023 | channels, | |
1024 | (int)(babel_now.tv_sec - route->time), | |
1025 | route->neigh->ifp->name, | |
1026 | format_address(route->neigh->address), | |
1027 | nexthop ? " nexthop " : "", | |
1028 | nexthop ? format_address(nexthop) : "", | |
1029 | route->installed ? " (installed)" : route_feasible(route) ? " (feasible)" : ""); | |
1030 | } | |
1031 | ||
1032 | static void | |
1033 | show_babel_xroutes_sub (struct xroute *xroute, struct vty *vty, | |
1034 | struct prefix *prefix) | |
1035 | { | |
1036 | if(prefix && !babel_prefix_eq(prefix, xroute->prefix, xroute->plen)) | |
1037 | return; | |
1038 | ||
1039 | vty_out (vty, "%s metric %d (exported)\n", | |
1040 | format_prefix(xroute->prefix, xroute->plen), | |
1041 | xroute->metric); | |
1042 | } | |
1043 | ||
1044 | DEFUN (show_babel_route, | |
1045 | show_babel_route_cmd, | |
1046 | "show babel route", | |
1047 | SHOW_STR | |
1048 | "Babel information\n" | |
1049 | "Babel internal routing table\n") | |
1050 | { | |
1051 | struct route_stream *routes = NULL; | |
1052 | struct xroute_stream *xroutes = NULL; | |
1053 | routes = route_stream(0); | |
1054 | if(routes) { | |
1055 | while(1) { | |
1056 | struct babel_route *route = route_stream_next(routes); | |
1057 | if(route == NULL) | |
1058 | break; | |
1059 | show_babel_routes_sub(route, vty, NULL); | |
1060 | } | |
1061 | route_stream_done(routes); | |
1062 | } else { | |
1063 | flog_err(EC_BABEL_MEMORY, "Couldn't allocate route stream."); | |
1064 | } | |
1065 | xroutes = xroute_stream(); | |
1066 | if(xroutes) { | |
1067 | while(1) { | |
1068 | struct xroute *xroute = xroute_stream_next(xroutes); | |
1069 | if(xroute == NULL) | |
1070 | break; | |
1071 | show_babel_xroutes_sub(xroute, vty, NULL); | |
1072 | } | |
1073 | xroute_stream_done(xroutes); | |
1074 | } else { | |
1075 | flog_err(EC_BABEL_MEMORY, "Couldn't allocate route stream."); | |
1076 | } | |
1077 | return CMD_SUCCESS; | |
1078 | } | |
1079 | ||
1080 | DEFUN (show_babel_route_prefix, | |
1081 | show_babel_route_prefix_cmd, | |
1082 | "show babel route <A.B.C.D/M|X:X::X:X/M>", | |
1083 | SHOW_STR | |
1084 | "Babel information\n" | |
1085 | "Babel internal routing table\n" | |
1086 | "IPv4 prefix <network>/<length>\n" | |
1087 | "IPv6 prefix <network>/<length>\n") | |
1088 | { | |
1089 | struct route_stream *routes = NULL; | |
1090 | struct xroute_stream *xroutes = NULL; | |
1091 | struct prefix prefix; | |
1092 | int ret; | |
1093 | ||
1094 | ret = str2prefix(argv[3]->arg, &prefix); | |
1095 | if(ret == 0) { | |
1096 | vty_out (vty, "%% Malformed address\n"); | |
1097 | return CMD_WARNING; | |
1098 | } | |
1099 | ||
1100 | routes = route_stream(0); | |
1101 | if(routes) { | |
1102 | while(1) { | |
1103 | struct babel_route *route = route_stream_next(routes); | |
1104 | if(route == NULL) | |
1105 | break; | |
1106 | show_babel_routes_sub(route, vty, &prefix); | |
1107 | } | |
1108 | route_stream_done(routes); | |
1109 | } else { | |
1110 | flog_err(EC_BABEL_MEMORY, "Couldn't allocate route stream."); | |
1111 | } | |
1112 | xroutes = xroute_stream(); | |
1113 | if(xroutes) { | |
1114 | while(1) { | |
1115 | struct xroute *xroute = xroute_stream_next(xroutes); | |
1116 | if(xroute == NULL) | |
1117 | break; | |
1118 | show_babel_xroutes_sub(xroute, vty, &prefix); | |
1119 | } | |
1120 | xroute_stream_done(xroutes); | |
1121 | } else { | |
1122 | flog_err(EC_BABEL_MEMORY, "Couldn't allocate route stream."); | |
1123 | } | |
1124 | return CMD_SUCCESS; | |
1125 | } | |
1126 | ||
1127 | ||
1128 | DEFUN (show_babel_route_addr, | |
1129 | show_babel_route_addr_cmd, | |
1130 | "show babel route A.B.C.D", | |
1131 | SHOW_STR | |
1132 | "Babel information\n" | |
1133 | "Babel internal routing table\n" | |
1134 | "IPv4 address <network>/<length>\n") | |
1135 | { | |
1136 | struct in_addr addr; | |
1137 | char buf[INET_ADDRSTRLEN + 8]; | |
1138 | struct route_stream *routes = NULL; | |
1139 | struct xroute_stream *xroutes = NULL; | |
1140 | struct prefix prefix; | |
1141 | int ret; | |
1142 | ||
1143 | ret = inet_aton (argv[3]->arg, &addr); | |
1144 | if (ret <= 0) { | |
1145 | vty_out (vty, "%% Malformed address\n"); | |
1146 | return CMD_WARNING; | |
1147 | } | |
1148 | ||
1149 | /* Quagga has no convenient prefix constructors. */ | |
1150 | snprintf(buf, sizeof(buf), "%s/%d", inet_ntoa(addr), 32); | |
1151 | ||
1152 | ret = str2prefix(buf, &prefix); | |
1153 | if (ret == 0) { | |
1154 | vty_out (vty, "%% Parse error -- this shouldn't happen\n"); | |
1155 | return CMD_WARNING; | |
1156 | } | |
1157 | ||
1158 | routes = route_stream(0); | |
1159 | if(routes) { | |
1160 | while(1) { | |
1161 | struct babel_route *route = route_stream_next(routes); | |
1162 | if(route == NULL) | |
1163 | break; | |
1164 | show_babel_routes_sub(route, vty, &prefix); | |
1165 | } | |
1166 | route_stream_done(routes); | |
1167 | } else { | |
1168 | flog_err(EC_BABEL_MEMORY, "Couldn't allocate route stream."); | |
1169 | } | |
1170 | xroutes = xroute_stream(); | |
1171 | if(xroutes) { | |
1172 | while(1) { | |
1173 | struct xroute *xroute = xroute_stream_next(xroutes); | |
1174 | if(xroute == NULL) | |
1175 | break; | |
1176 | show_babel_xroutes_sub(xroute, vty, &prefix); | |
1177 | } | |
1178 | xroute_stream_done(xroutes); | |
1179 | } else { | |
1180 | flog_err(EC_BABEL_MEMORY, "Couldn't allocate route stream."); | |
1181 | } | |
1182 | return CMD_SUCCESS; | |
1183 | } | |
1184 | ||
1185 | DEFUN (show_babel_route_addr6, | |
1186 | show_babel_route_addr6_cmd, | |
1187 | "show babel route X:X::X:X", | |
1188 | SHOW_STR | |
1189 | "Babel information\n" | |
1190 | "Babel internal routing table\n" | |
1191 | "IPv6 address <network>/<length>\n") | |
1192 | { | |
1193 | struct in6_addr addr; | |
1194 | char buf1[INET6_ADDRSTRLEN]; | |
1195 | char buf[INET6_ADDRSTRLEN + 8]; | |
1196 | struct route_stream *routes = NULL; | |
1197 | struct xroute_stream *xroutes = NULL; | |
1198 | struct prefix prefix; | |
1199 | int ret; | |
1200 | ||
1201 | ret = inet_pton (AF_INET6, argv[3]->arg, &addr); | |
1202 | if (ret <= 0) { | |
1203 | vty_out (vty, "%% Malformed address\n"); | |
1204 | return CMD_WARNING; | |
1205 | } | |
1206 | ||
1207 | /* Quagga has no convenient prefix constructors. */ | |
1208 | snprintf(buf, sizeof(buf), "%s/%d", | |
1209 | inet_ntop(AF_INET6, &addr, buf1, sizeof(buf1)), 128); | |
1210 | ||
1211 | ret = str2prefix(buf, &prefix); | |
1212 | if (ret == 0) { | |
1213 | vty_out (vty, "%% Parse error -- this shouldn't happen\n"); | |
1214 | return CMD_WARNING; | |
1215 | } | |
1216 | ||
1217 | routes = route_stream(0); | |
1218 | if(routes) { | |
1219 | while(1) { | |
1220 | struct babel_route *route = route_stream_next(routes); | |
1221 | if(route == NULL) | |
1222 | break; | |
1223 | show_babel_routes_sub(route, vty, &prefix); | |
1224 | } | |
1225 | route_stream_done(routes); | |
1226 | } else { | |
1227 | flog_err(EC_BABEL_MEMORY, "Couldn't allocate route stream."); | |
1228 | } | |
1229 | xroutes = xroute_stream(); | |
1230 | if(xroutes) { | |
1231 | while(1) { | |
1232 | struct xroute *xroute = xroute_stream_next(xroutes); | |
1233 | if(xroute == NULL) | |
1234 | break; | |
1235 | show_babel_xroutes_sub(xroute, vty, &prefix); | |
1236 | } | |
1237 | xroute_stream_done(xroutes); | |
1238 | } else { | |
1239 | flog_err(EC_BABEL_MEMORY, "Couldn't allocate route stream."); | |
1240 | } | |
1241 | return CMD_SUCCESS; | |
1242 | } | |
1243 | ||
1244 | DEFUN (show_babel_parameters, | |
1245 | show_babel_parameters_cmd, | |
1246 | "show babel parameters", | |
1247 | SHOW_STR | |
1248 | "Babel information\n" | |
1249 | "Configuration information\n") | |
1250 | { | |
1251 | vty_out (vty, " -- Babel running configuration --\n"); | |
1252 | show_babel_main_configuration(vty); | |
1253 | vty_out (vty, " -- distribution lists --\n"); | |
1254 | config_show_distribute(vty); | |
1255 | ||
1256 | return CMD_SUCCESS; | |
1257 | } | |
1258 | ||
1259 | void | |
1260 | babel_if_init () | |
1261 | { | |
1262 | /* initialize interface list */ | |
1263 | hook_register_prio(if_add, 0, babel_if_new_hook); | |
1264 | hook_register_prio(if_del, 0, babel_if_delete_hook); | |
1265 | ||
1266 | babel_enable_if = vector_init (1); | |
1267 | ||
1268 | /* install interface node and commands */ | |
1269 | install_node (&babel_interface_node, interface_config_write); | |
1270 | if_cmd_init(); | |
1271 | ||
1272 | install_element(BABEL_NODE, &babel_network_cmd); | |
1273 | install_element(BABEL_NODE, &no_babel_network_cmd); | |
1274 | install_element(INTERFACE_NODE, &babel_split_horizon_cmd); | |
1275 | install_element(INTERFACE_NODE, &no_babel_split_horizon_cmd); | |
1276 | install_element(INTERFACE_NODE, &babel_set_wired_cmd); | |
1277 | install_element(INTERFACE_NODE, &babel_set_wireless_cmd); | |
1278 | install_element(INTERFACE_NODE, &babel_set_hello_interval_cmd); | |
1279 | install_element(INTERFACE_NODE, &babel_set_update_interval_cmd); | |
1280 | install_element(INTERFACE_NODE, &babel_set_rxcost_cmd); | |
1281 | install_element(INTERFACE_NODE, &babel_set_channel_cmd); | |
1282 | install_element(INTERFACE_NODE, &babel_set_rtt_decay_cmd); | |
1283 | install_element(INTERFACE_NODE, &babel_set_rtt_min_cmd); | |
1284 | install_element(INTERFACE_NODE, &babel_set_rtt_max_cmd); | |
1285 | install_element(INTERFACE_NODE, &babel_set_max_rtt_penalty_cmd); | |
1286 | install_element(INTERFACE_NODE, &babel_set_enable_timestamps_cmd); | |
1287 | install_element(INTERFACE_NODE, &no_babel_set_enable_timestamps_cmd); | |
1288 | install_element(INTERFACE_NODE, &babel_set_channel_interfering_cmd); | |
1289 | install_element(INTERFACE_NODE, &babel_set_channel_noninterfering_cmd); | |
1290 | ||
1291 | /* "show babel ..." commands */ | |
1292 | install_element(VIEW_NODE, &show_babel_interface_cmd); | |
1293 | install_element(VIEW_NODE, &show_babel_neighbour_cmd); | |
1294 | install_element(VIEW_NODE, &show_babel_route_cmd); | |
1295 | install_element(VIEW_NODE, &show_babel_route_prefix_cmd); | |
1296 | install_element(VIEW_NODE, &show_babel_route_addr_cmd); | |
1297 | install_element(VIEW_NODE, &show_babel_route_addr6_cmd); | |
1298 | install_element(VIEW_NODE, &show_babel_parameters_cmd); | |
1299 | } | |
1300 | ||
1301 | /* hooks: functions called respectively when struct interface is | |
1302 | created or deleted. */ | |
1303 | static int | |
1304 | babel_if_new_hook (struct interface *ifp) | |
1305 | { | |
1306 | ifp->info = babel_interface_allocate(); | |
1307 | return 0; | |
1308 | } | |
1309 | ||
1310 | static int | |
1311 | babel_if_delete_hook (struct interface *ifp) | |
1312 | { | |
1313 | babel_interface_free(ifp->info); | |
1314 | ifp->info = NULL; | |
1315 | return 0; | |
1316 | } | |
1317 | ||
1318 | /* Output an "interface" section for each of the known interfaces with | |
1319 | babeld-specific statement lines where appropriate. */ | |
1320 | static int | |
1321 | interface_config_write (struct vty *vty) | |
1322 | { | |
1323 | struct vrf *vrf = vrf_lookup_by_id(VRF_DEFAULT); | |
1324 | struct interface *ifp; | |
1325 | int write = 0; | |
1326 | ||
1327 | FOR_ALL_INTERFACES (vrf, ifp) { | |
1328 | vty_frame (vty, "interface %s\n",ifp->name); | |
1329 | if (ifp->desc) | |
1330 | vty_out (vty, " description %s\n",ifp->desc); | |
1331 | babel_interface_nfo *babel_ifp = babel_get_if_nfo (ifp); | |
1332 | /* wireless is the default*/ | |
1333 | if (CHECK_FLAG (babel_ifp->flags, BABEL_IF_WIRED)) | |
1334 | { | |
1335 | vty_out (vty, " babel wired\n"); | |
1336 | write++; | |
1337 | } | |
1338 | if (babel_ifp->hello_interval != BABEL_DEFAULT_HELLO_INTERVAL) | |
1339 | { | |
1340 | vty_out (vty, " babel hello-interval %u\n", | |
1341 | babel_ifp->hello_interval); | |
1342 | write++; | |
1343 | } | |
1344 | if (babel_ifp->update_interval != BABEL_DEFAULT_UPDATE_INTERVAL) | |
1345 | { | |
1346 | vty_out (vty, " babel update-interval %u\n", | |
1347 | babel_ifp->update_interval); | |
1348 | write++; | |
1349 | } | |
1350 | /* Some parameters have different defaults for wired/wireless. */ | |
1351 | if (CHECK_FLAG (babel_ifp->flags, BABEL_IF_WIRED)) { | |
1352 | if (!CHECK_FLAG (babel_ifp->flags, BABEL_IF_SPLIT_HORIZON)) { | |
1353 | vty_out (vty, " no babel split-horizon\n"); | |
1354 | write++; | |
1355 | } | |
1356 | if (babel_ifp->cost != BABEL_DEFAULT_RXCOST_WIRED) { | |
1357 | vty_out (vty, " babel rxcost %u\n", babel_ifp->cost); | |
1358 | write++; | |
1359 | } | |
1360 | if (babel_ifp->channel == BABEL_IF_CHANNEL_INTERFERING) { | |
1361 | vty_out (vty, " babel channel interfering\n"); | |
1362 | write++; | |
1363 | } else if(babel_ifp->channel != BABEL_IF_CHANNEL_NONINTERFERING) { | |
1364 | vty_out (vty, " babel channel %d\n",babel_ifp->channel); | |
1365 | write++; | |
1366 | } | |
1367 | } else { | |
1368 | if (CHECK_FLAG (babel_ifp->flags, BABEL_IF_SPLIT_HORIZON)) { | |
1369 | vty_out (vty, " babel split-horizon\n"); | |
1370 | write++; | |
1371 | } | |
1372 | if (babel_ifp->cost != BABEL_DEFAULT_RXCOST_WIRELESS) { | |
1373 | vty_out (vty, " babel rxcost %u\n", babel_ifp->cost); | |
1374 | write++; | |
1375 | } | |
1376 | if (babel_ifp->channel == BABEL_IF_CHANNEL_NONINTERFERING) { | |
1377 | vty_out (vty, " babel channel noninterfering\n"); | |
1378 | write++; | |
1379 | } else if(babel_ifp->channel != BABEL_IF_CHANNEL_INTERFERING) { | |
1380 | vty_out (vty, " babel channel %d\n",babel_ifp->channel); | |
1381 | write++; | |
1382 | } | |
1383 | } | |
1384 | vty_endframe (vty, "!\n"); | |
1385 | write++; | |
1386 | } | |
1387 | return write; | |
1388 | } | |
1389 | ||
1390 | /* Output a "network" statement line for each of the enabled interfaces. */ | |
1391 | int | |
1392 | babel_enable_if_config_write (struct vty * vty) | |
1393 | { | |
1394 | unsigned int i, lines = 0; | |
1395 | char *str; | |
1396 | ||
1397 | for (i = 0; i < vector_active (babel_enable_if); i++) | |
1398 | if ((str = vector_slot (babel_enable_if, i)) != NULL) | |
1399 | { | |
1400 | vty_out (vty, " network %s\n", str); | |
1401 | lines++; | |
1402 | } | |
1403 | return lines; | |
1404 | } | |
1405 | ||
1406 | /* functions to allocate or free memory for a babel_interface_nfo, filling | |
1407 | needed fields */ | |
1408 | static babel_interface_nfo * | |
1409 | babel_interface_allocate (void) | |
1410 | { | |
1411 | babel_interface_nfo *babel_ifp; | |
1412 | babel_ifp = XMALLOC(MTYPE_BABEL_IF, sizeof(babel_interface_nfo)); | |
1413 | if(babel_ifp == NULL) | |
1414 | return NULL; | |
1415 | ||
1416 | /* Here are set the default values for an interface. */ | |
1417 | memset(babel_ifp, 0, sizeof(babel_interface_nfo)); | |
1418 | /* All flags are unset */ | |
1419 | babel_ifp->bucket_time = babel_now.tv_sec; | |
1420 | babel_ifp->bucket = BUCKET_TOKENS_MAX; | |
1421 | babel_ifp->hello_seqno = (random() & 0xFFFF); | |
1422 | babel_ifp->rtt_min = 10000; | |
1423 | babel_ifp->rtt_max = 120000; | |
1424 | babel_ifp->max_rtt_penalty = 150; | |
1425 | babel_ifp->hello_interval = BABEL_DEFAULT_HELLO_INTERVAL; | |
1426 | babel_ifp->update_interval = BABEL_DEFAULT_UPDATE_INTERVAL; | |
1427 | babel_ifp->channel = BABEL_IF_CHANNEL_INTERFERING; | |
1428 | babel_set_wired_internal(babel_ifp, 0); | |
1429 | ||
1430 | return babel_ifp; | |
1431 | } | |
1432 | ||
1433 | static void | |
1434 | babel_interface_free (babel_interface_nfo *babel_ifp) | |
1435 | { | |
1436 | XFREE(MTYPE_BABEL_IF, babel_ifp); | |
1437 | } |