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718e3744 | 1 | /* Zebra's client library. |
2 | * Copyright (C) 1999 Kunihiro Ishiguro | |
634f9ea2 | 3 | * Copyright (C) 2005 Andrew J. Schorr |
718e3744 | 4 | * |
5 | * This file is part of GNU Zebra. | |
6 | * | |
7 | * GNU Zebra is free software; you can redistribute it and/or modify | |
8 | * it under the terms of the GNU General Public License as published | |
9 | * by the Free Software Foundation; either version 2, or (at your | |
10 | * option) any later version. | |
11 | * | |
12 | * GNU Zebra is distributed in the hope that it will be useful, but | |
13 | * WITHOUT ANY WARRANTY; without even the implied warranty of | |
14 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU | |
15 | * General Public License for more details. | |
16 | * | |
17 | * You should have received a copy of the GNU General Public License | |
18 | * along with GNU Zebra; see the file COPYING. If not, write to the | |
19 | * Free Software Foundation, Inc., 59 Temple Place - Suite 330, Boston, | |
20 | * MA 02111-1307, USA. | |
21 | */ | |
22 | ||
23 | #include <zebra.h> | |
24 | ||
25 | #include "prefix.h" | |
26 | #include "stream.h" | |
634f9ea2 | 27 | #include "buffer.h" |
718e3744 | 28 | #include "network.h" |
29 | #include "if.h" | |
30 | #include "log.h" | |
31 | #include "thread.h" | |
32 | #include "zclient.h" | |
33 | #include "memory.h" | |
34 | #include "table.h" | |
5b30316e | 35 | #include "nexthop.h" |
6b0655a2 | 36 | |
718e3744 | 37 | /* Zebra client events. */ |
38 | enum event {ZCLIENT_SCHEDULE, ZCLIENT_READ, ZCLIENT_CONNECT}; | |
39 | ||
40 | /* Prototype for event manager. */ | |
41 | static void zclient_event (enum event, struct zclient *); | |
42 | ||
744f4685 | 43 | const char *zclient_serv_path = NULL; |
b5114685 | 44 | |
718e3744 | 45 | /* This file local debug flag. */ |
46 | int zclient_debug = 0; | |
6b0655a2 | 47 | |
718e3744 | 48 | /* Allocate zclient structure. */ |
49 | struct zclient * | |
4140ca4d | 50 | zclient_new (struct thread_master *master) |
718e3744 | 51 | { |
52 | struct zclient *zclient; | |
393deb9b | 53 | zclient = XCALLOC (MTYPE_ZCLIENT, sizeof (struct zclient)); |
718e3744 | 54 | |
55 | zclient->ibuf = stream_new (ZEBRA_MAX_PACKET_SIZ); | |
56 | zclient->obuf = stream_new (ZEBRA_MAX_PACKET_SIZ); | |
634f9ea2 | 57 | zclient->wb = buffer_new(0); |
4140ca4d | 58 | zclient->master = master; |
718e3744 | 59 | |
60 | return zclient; | |
61 | } | |
62 | ||
228da428 | 63 | /* This function is only called when exiting, because |
634f9ea2 | 64 | many parts of the code do not check for I/O errors, so they could |
65 | reference an invalid pointer if the structure was ever freed. | |
634f9ea2 | 66 | |
228da428 | 67 | Free zclient structure. */ |
718e3744 | 68 | void |
69 | zclient_free (struct zclient *zclient) | |
70 | { | |
634f9ea2 | 71 | if (zclient->ibuf) |
72 | stream_free(zclient->ibuf); | |
73 | if (zclient->obuf) | |
74 | stream_free(zclient->obuf); | |
75 | if (zclient->wb) | |
76 | buffer_free(zclient->wb); | |
77 | ||
718e3744 | 78 | XFREE (MTYPE_ZCLIENT, zclient); |
79 | } | |
80 | ||
7c8ff89e DS |
81 | int |
82 | redist_check_instance (struct redist_proto *red, u_short instance) | |
83 | { | |
84 | struct listnode *node; | |
85 | u_short *id; | |
86 | ||
87 | if (!red->instances) | |
88 | return 0; | |
89 | ||
90 | for (ALL_LIST_ELEMENTS_RO (red->instances, node, id)) | |
91 | if (*id == instance) | |
92 | return 1; | |
93 | ||
94 | return 0; | |
95 | } | |
96 | ||
97 | void | |
98 | redist_add_instance (struct redist_proto *red, u_short instance) | |
99 | { | |
100 | u_short *in; | |
101 | ||
102 | red->enabled = 1; | |
103 | ||
104 | if (!red->instances) | |
105 | red->instances = list_new(); | |
106 | ||
107 | in = (u_short *)calloc(1, sizeof(u_short)); | |
108 | *in = instance; | |
109 | listnode_add (red->instances, in); | |
110 | } | |
111 | ||
112 | void | |
113 | redist_del_instance (struct redist_proto *red, u_short instance) | |
114 | { | |
115 | struct listnode *node; | |
116 | u_short *id = NULL; | |
117 | ||
118 | if (!red->instances) | |
24873f0c | 119 | return; |
7c8ff89e DS |
120 | |
121 | for (ALL_LIST_ELEMENTS_RO (red->instances, node, id)) | |
122 | if (*id == instance) | |
123 | break; | |
124 | ||
125 | if (id) | |
126 | { | |
127 | listnode_delete(red->instances, id); | |
128 | if (!red->instances->count) | |
129 | { | |
130 | red->enabled = 0; | |
131 | list_free(red->instances); | |
132 | red->instances = NULL; | |
133 | } | |
134 | } | |
135 | } | |
136 | ||
718e3744 | 137 | /* Stop zebra client services. */ |
138 | void | |
139 | zclient_stop (struct zclient *zclient) | |
140 | { | |
141 | if (zclient_debug) | |
8ddca704 | 142 | zlog_debug ("zclient stopped"); |
718e3744 | 143 | |
144 | /* Stop threads. */ | |
634f9ea2 | 145 | THREAD_OFF(zclient->t_read); |
146 | THREAD_OFF(zclient->t_connect); | |
147 | THREAD_OFF(zclient->t_write); | |
148 | ||
149 | /* Reset streams. */ | |
150 | stream_reset(zclient->ibuf); | |
151 | stream_reset(zclient->obuf); | |
152 | ||
153 | /* Empty the write buffer. */ | |
154 | buffer_reset(zclient->wb); | |
718e3744 | 155 | |
156 | /* Close socket. */ | |
157 | if (zclient->sock >= 0) | |
158 | { | |
159 | close (zclient->sock); | |
160 | zclient->sock = -1; | |
161 | } | |
162 | zclient->fail = 0; | |
163 | } | |
164 | ||
165 | void | |
166 | zclient_reset (struct zclient *zclient) | |
167 | { | |
7076bb2f | 168 | afi_t afi; |
3d68677e | 169 | |
718e3744 | 170 | zclient_stop (zclient); |
3d68677e DS |
171 | |
172 | for (afi = AFI_IP; afi < AFI_MAX; afi++) | |
7076bb2f | 173 | redist_del_instance (&zclient->mi_redist[afi][zclient->redist_default], zclient->instance); |
3d68677e | 174 | |
7c8ff89e | 175 | zclient_init (zclient, zclient->redist_default, zclient->instance); |
718e3744 | 176 | } |
177 | ||
b5114685 VT |
178 | #ifdef HAVE_TCP_ZEBRA |
179 | ||
718e3744 | 180 | /* Make socket to zebra daemon. Return zebra socket. */ |
b5114685 | 181 | static int |
634f9ea2 | 182 | zclient_socket(void) |
718e3744 | 183 | { |
184 | int sock; | |
185 | int ret; | |
186 | struct sockaddr_in serv; | |
187 | ||
188 | /* We should think about IPv6 connection. */ | |
189 | sock = socket (AF_INET, SOCK_STREAM, 0); | |
190 | if (sock < 0) | |
191 | return -1; | |
192 | ||
193 | /* Make server socket. */ | |
194 | memset (&serv, 0, sizeof (struct sockaddr_in)); | |
195 | serv.sin_family = AF_INET; | |
196 | serv.sin_port = htons (ZEBRA_PORT); | |
6f0e3f6e | 197 | #ifdef HAVE_STRUCT_SOCKADDR_IN_SIN_LEN |
718e3744 | 198 | serv.sin_len = sizeof (struct sockaddr_in); |
6f0e3f6e | 199 | #endif /* HAVE_STRUCT_SOCKADDR_IN_SIN_LEN */ |
718e3744 | 200 | serv.sin_addr.s_addr = htonl (INADDR_LOOPBACK); |
201 | ||
202 | /* Connect to zebra. */ | |
203 | ret = connect (sock, (struct sockaddr *) &serv, sizeof (serv)); | |
204 | if (ret < 0) | |
205 | { | |
4ecc09d3 | 206 | zlog_warn ("%s connect failure: %d", __PRETTY_FUNCTION__, errno); |
718e3744 | 207 | close (sock); |
208 | return -1; | |
209 | } | |
210 | return sock; | |
211 | } | |
212 | ||
3414d035 | 213 | #else |
b5114685 | 214 | |
718e3744 | 215 | /* For sockaddr_un. */ |
216 | #include <sys/un.h> | |
217 | ||
1b91e000 | 218 | static int |
8c328f11 | 219 | zclient_socket_un (const char *path) |
718e3744 | 220 | { |
221 | int ret; | |
222 | int sock, len; | |
223 | struct sockaddr_un addr; | |
224 | ||
225 | sock = socket (AF_UNIX, SOCK_STREAM, 0); | |
226 | if (sock < 0) | |
227 | return -1; | |
228 | ||
229 | /* Make server socket. */ | |
230 | memset (&addr, 0, sizeof (struct sockaddr_un)); | |
231 | addr.sun_family = AF_UNIX; | |
232 | strncpy (addr.sun_path, path, strlen (path)); | |
6f0e3f6e | 233 | #ifdef HAVE_STRUCT_SOCKADDR_UN_SUN_LEN |
718e3744 | 234 | len = addr.sun_len = SUN_LEN(&addr); |
235 | #else | |
236 | len = sizeof (addr.sun_family) + strlen (addr.sun_path); | |
6f0e3f6e | 237 | #endif /* HAVE_STRUCT_SOCKADDR_UN_SUN_LEN */ |
718e3744 | 238 | |
239 | ret = connect (sock, (struct sockaddr *) &addr, len); | |
240 | if (ret < 0) | |
241 | { | |
4ecc09d3 | 242 | zlog_warn ("%s connect failure: %d", __PRETTY_FUNCTION__, errno); |
718e3744 | 243 | close (sock); |
244 | return -1; | |
245 | } | |
246 | return sock; | |
247 | } | |
248 | ||
3414d035 VT |
249 | #endif /* HAVE_TCP_ZEBRA */ |
250 | ||
b5114685 VT |
251 | /** |
252 | * Connect to zebra daemon. | |
253 | * @param zclient a pointer to zclient structure | |
254 | * @return socket fd just to make sure that connection established | |
255 | * @see zclient_init | |
256 | * @see zclient_new | |
257 | */ | |
258 | int | |
259 | zclient_socket_connect (struct zclient *zclient) | |
260 | { | |
261 | #ifdef HAVE_TCP_ZEBRA | |
262 | zclient->sock = zclient_socket (); | |
263 | #else | |
12e41d03 | 264 | zclient->sock = zclient_socket_un (zclient_serv_path_get()); |
b5114685 VT |
265 | #endif |
266 | return zclient->sock; | |
267 | } | |
268 | ||
634f9ea2 | 269 | static int |
270 | zclient_failed(struct zclient *zclient) | |
271 | { | |
272 | zclient->fail++; | |
273 | zclient_stop(zclient); | |
274 | zclient_event(ZCLIENT_CONNECT, zclient); | |
275 | return -1; | |
276 | } | |
277 | ||
278 | static int | |
279 | zclient_flush_data(struct thread *thread) | |
280 | { | |
281 | struct zclient *zclient = THREAD_ARG(thread); | |
282 | ||
283 | zclient->t_write = NULL; | |
284 | if (zclient->sock < 0) | |
285 | return -1; | |
286 | switch (buffer_flush_available(zclient->wb, zclient->sock)) | |
287 | { | |
288 | case BUFFER_ERROR: | |
289 | zlog_warn("%s: buffer_flush_available failed on zclient fd %d, closing", | |
290 | __func__, zclient->sock); | |
291 | return zclient_failed(zclient); | |
292 | break; | |
293 | case BUFFER_PENDING: | |
4140ca4d | 294 | zclient->t_write = thread_add_write(zclient->master, zclient_flush_data, |
634f9ea2 | 295 | zclient, zclient->sock); |
296 | break; | |
297 | case BUFFER_EMPTY: | |
298 | break; | |
299 | } | |
300 | return 0; | |
301 | } | |
302 | ||
718e3744 | 303 | int |
634f9ea2 | 304 | zclient_send_message(struct zclient *zclient) |
305 | { | |
306 | if (zclient->sock < 0) | |
307 | return -1; | |
308 | switch (buffer_write(zclient->wb, zclient->sock, STREAM_DATA(zclient->obuf), | |
309 | stream_get_endp(zclient->obuf))) | |
310 | { | |
311 | case BUFFER_ERROR: | |
312 | zlog_warn("%s: buffer_write failed to zclient fd %d, closing", | |
313 | __func__, zclient->sock); | |
314 | return zclient_failed(zclient); | |
315 | break; | |
316 | case BUFFER_EMPTY: | |
317 | THREAD_OFF(zclient->t_write); | |
318 | break; | |
319 | case BUFFER_PENDING: | |
4140ca4d | 320 | THREAD_WRITE_ON(zclient->master, zclient->t_write, |
634f9ea2 | 321 | zclient_flush_data, zclient, zclient->sock); |
322 | break; | |
323 | } | |
324 | return 0; | |
325 | } | |
326 | ||
d211086a | 327 | void |
7076bb2f | 328 | zclient_create_header (struct stream *s, uint16_t command, vrf_id_t vrf_id) |
c1b9800a | 329 | { |
330 | /* length placeholder, caller can update */ | |
331 | stream_putw (s, ZEBRA_HEADER_SIZE); | |
332 | stream_putc (s, ZEBRA_HEADER_MARKER); | |
333 | stream_putc (s, ZSERV_VERSION); | |
7076bb2f | 334 | stream_putw (s, vrf_id); |
c1b9800a | 335 | stream_putw (s, command); |
336 | } | |
337 | ||
55119089 ND |
338 | int |
339 | zclient_read_header (struct stream *s, int sock, u_int16_t *size, u_char *marker, | |
e7a2870b | 340 | u_char *version, vrf_id_t *vrf_id, u_int16_t *cmd) |
55119089 ND |
341 | { |
342 | if (stream_read (s, sock, ZEBRA_HEADER_SIZE) != ZEBRA_HEADER_SIZE) | |
343 | return -1; | |
344 | ||
345 | *size = stream_getw (s) - ZEBRA_HEADER_SIZE; | |
346 | *marker = stream_getc (s); | |
347 | *version = stream_getc (s); | |
348 | *vrf_id = stream_getw (s); | |
349 | *cmd = stream_getw (s); | |
350 | ||
195dd232 DS |
351 | if (*version != ZSERV_VERSION || *marker != ZEBRA_HEADER_MARKER) |
352 | { | |
353 | zlog_err("%s: socket %d version mismatch, marker %d, version %d", | |
354 | __func__, sock, *marker, *version); | |
355 | return -1; | |
356 | } | |
357 | ||
55119089 ND |
358 | if (*size && stream_read (s, sock, *size) != *size) |
359 | return -1; | |
360 | ||
361 | return 0; | |
362 | } | |
363 | ||
634f9ea2 | 364 | /* Send simple Zebra message. */ |
365 | static int | |
7076bb2f | 366 | zebra_message_send (struct zclient *zclient, int command, vrf_id_t vrf_id) |
718e3744 | 367 | { |
368 | struct stream *s; | |
369 | ||
370 | /* Get zclient output buffer. */ | |
371 | s = zclient->obuf; | |
372 | stream_reset (s); | |
373 | ||
374 | /* Send very simple command only Zebra message. */ | |
7076bb2f | 375 | zclient_create_header (s, command, vrf_id); |
c1b9800a | 376 | |
634f9ea2 | 377 | return zclient_send_message(zclient); |
718e3744 | 378 | } |
379 | ||
2ea1ab1c VT |
380 | static int |
381 | zebra_hello_send (struct zclient *zclient) | |
382 | { | |
383 | struct stream *s; | |
384 | ||
385 | if (zclient->redist_default) | |
386 | { | |
387 | s = zclient->obuf; | |
388 | stream_reset (s); | |
389 | ||
7076bb2f FL |
390 | /* The VRF ID in the HELLO message is always 0. */ |
391 | zclient_create_header (s, ZEBRA_HELLO, VRF_DEFAULT); | |
2ea1ab1c | 392 | stream_putc (s, zclient->redist_default); |
7c8ff89e | 393 | stream_putw (s, zclient->instance); |
2ea1ab1c VT |
394 | stream_putw_at (s, 0, stream_get_endp (s)); |
395 | return zclient_send_message(zclient); | |
396 | } | |
397 | ||
398 | return 0; | |
399 | } | |
400 | ||
0e5223e7 | 401 | /* Send register requests to zebra daemon for the information in a VRF. */ |
7076bb2f | 402 | void |
0e5223e7 | 403 | zclient_send_reg_requests (struct zclient *zclient, vrf_id_t vrf_id) |
7076bb2f FL |
404 | { |
405 | int i; | |
406 | afi_t afi; | |
407 | ||
408 | /* zclient is disabled. */ | |
409 | if (! zclient->enable) | |
410 | return; | |
411 | ||
412 | /* If not connected to the zebra yet. */ | |
413 | if (zclient->sock < 0) | |
414 | return; | |
415 | ||
416 | if (zclient_debug) | |
0e5223e7 | 417 | zlog_debug ("%s: send register messages for VRF %u", __func__, vrf_id); |
7076bb2f FL |
418 | |
419 | /* We need router-id information. */ | |
420 | zebra_message_send (zclient, ZEBRA_ROUTER_ID_ADD, vrf_id); | |
421 | ||
422 | /* We need interface information. */ | |
423 | zebra_message_send (zclient, ZEBRA_INTERFACE_ADD, vrf_id); | |
424 | ||
425 | /* Set unwanted redistribute route. */ | |
426 | for (afi = AFI_IP; afi < AFI_MAX; afi++) | |
427 | vrf_bitmap_set (zclient->redist[afi][zclient->redist_default], vrf_id); | |
428 | ||
429 | /* Flush all redistribute request. */ | |
430 | if (vrf_id == VRF_DEFAULT) | |
431 | for (afi = AFI_IP; afi < AFI_MAX; afi++) | |
432 | for (i = 0; i < ZEBRA_ROUTE_MAX; i++) | |
433 | if (zclient->mi_redist[afi][i].enabled) | |
434 | { | |
435 | struct listnode *node; | |
436 | u_short *id; | |
437 | ||
438 | for (ALL_LIST_ELEMENTS_RO(zclient->mi_redist[afi][i].instances, node, id)) | |
439 | if (!(i == zclient->redist_default && *id == zclient->instance)) | |
440 | zebra_redistribute_send (ZEBRA_REDISTRIBUTE_ADD, zclient, afi, i, | |
441 | *id, VRF_DEFAULT); | |
442 | } | |
443 | ||
444 | /* Flush all redistribute request. */ | |
445 | for (afi = AFI_IP; afi < AFI_MAX; afi++) | |
446 | for (i = 0; i < ZEBRA_ROUTE_MAX; i++) | |
447 | if (i != zclient->redist_default && | |
448 | vrf_bitmap_check (zclient->redist[afi][i], vrf_id)) | |
449 | zebra_redistribute_send (ZEBRA_REDISTRIBUTE_ADD, zclient, afi, i, 0, vrf_id); | |
450 | ||
451 | /* If default information is needed. */ | |
452 | if (vrf_bitmap_check (zclient->default_information, VRF_DEFAULT)) | |
453 | zebra_message_send (zclient, ZEBRA_REDISTRIBUTE_DEFAULT_ADD, vrf_id); | |
454 | } | |
455 | ||
0e5223e7 | 456 | /* Send unregister requests to zebra daemon for the information in a VRF. */ |
457 | void | |
458 | zclient_send_dereg_requests (struct zclient *zclient, vrf_id_t vrf_id) | |
459 | { | |
460 | int i; | |
461 | afi_t afi; | |
462 | ||
463 | /* zclient is disabled. */ | |
464 | if (! zclient->enable) | |
465 | return; | |
466 | ||
467 | /* If not connected to the zebra yet. */ | |
468 | if (zclient->sock < 0) | |
469 | return; | |
470 | ||
471 | if (zclient_debug) | |
472 | zlog_debug ("%s: send deregister messages for VRF %u", __func__, vrf_id); | |
473 | ||
474 | /* We need router-id information. */ | |
475 | zebra_message_send (zclient, ZEBRA_ROUTER_ID_DELETE, vrf_id); | |
476 | ||
477 | /* We need interface information. */ | |
478 | zebra_message_send (zclient, ZEBRA_INTERFACE_DELETE, vrf_id); | |
479 | ||
480 | /* Set unwanted redistribute route. */ | |
481 | for (afi = AFI_IP; afi < AFI_MAX; afi++) | |
482 | vrf_bitmap_set (zclient->redist[afi][zclient->redist_default], vrf_id); | |
483 | ||
484 | /* Flush all redistribute request. */ | |
485 | if (vrf_id == VRF_DEFAULT) | |
486 | for (afi = AFI_IP; afi < AFI_MAX; afi++) | |
487 | for (i = 0; i < ZEBRA_ROUTE_MAX; i++) | |
488 | if (zclient->mi_redist[afi][i].enabled) | |
489 | { | |
490 | struct listnode *node; | |
491 | u_short *id; | |
492 | ||
493 | for (ALL_LIST_ELEMENTS_RO(zclient->mi_redist[afi][i].instances, node, id)) | |
494 | if (!(i == zclient->redist_default && *id == zclient->instance)) | |
495 | zebra_redistribute_send (ZEBRA_REDISTRIBUTE_DELETE, zclient, afi, i, | |
496 | *id, VRF_DEFAULT); | |
497 | } | |
498 | ||
499 | /* Flush all redistribute request. */ | |
500 | for (afi = AFI_IP; afi < AFI_MAX; afi++) | |
501 | for (i = 0; i < ZEBRA_ROUTE_MAX; i++) | |
502 | if (i != zclient->redist_default && | |
503 | vrf_bitmap_check (zclient->redist[afi][i], vrf_id)) | |
504 | zebra_redistribute_send (ZEBRA_REDISTRIBUTE_DELETE, zclient, afi, i, 0, vrf_id); | |
505 | ||
506 | /* If default information is needed. */ | |
507 | if (vrf_bitmap_check (zclient->default_information, VRF_DEFAULT)) | |
508 | zebra_message_send (zclient, ZEBRA_REDISTRIBUTE_DEFAULT_DELETE, vrf_id); | |
509 | } | |
510 | ||
4a04e5f7 | 511 | /* Send request to zebra daemon to start or stop RA. */ |
512 | void | |
513 | zclient_send_interface_radv_req (struct zclient *zclient, vrf_id_t vrf_id, | |
5c81b96a | 514 | struct interface *ifp, int enable, int ra_interval) |
4a04e5f7 | 515 | { |
516 | struct stream *s; | |
517 | ||
518 | /* zclient is disabled. */ | |
519 | if (!zclient->enable) | |
520 | return; | |
521 | ||
522 | /* If not connected to the zebra yet. */ | |
523 | if (zclient->sock < 0) | |
524 | return; | |
525 | ||
526 | /* Form and send message. */ | |
527 | s = zclient->obuf; | |
528 | stream_reset (s); | |
529 | ||
530 | if (enable) | |
531 | zclient_create_header (s, ZEBRA_INTERFACE_ENABLE_RADV, vrf_id); | |
532 | else | |
533 | zclient_create_header (s, ZEBRA_INTERFACE_DISABLE_RADV, vrf_id); | |
534 | ||
535 | stream_putl (s, ifp->ifindex); | |
5c81b96a | 536 | stream_putl (s, ra_interval); |
4a04e5f7 | 537 | |
538 | stream_putw_at (s, 0, stream_get_endp (s)); | |
539 | ||
540 | zclient_send_message(zclient); | |
541 | } | |
542 | ||
718e3744 | 543 | /* Make connection to zebra daemon. */ |
544 | int | |
545 | zclient_start (struct zclient *zclient) | |
546 | { | |
7076bb2f FL |
547 | if (zclient_debug) |
548 | zlog_info ("zclient_start is called"); | |
549 | ||
550 | /* zclient is disabled. */ | |
551 | if (! zclient->enable) | |
552 | return 0; | |
718e3744 | 553 | |
718e3744 | 554 | /* If already connected to the zebra. */ |
555 | if (zclient->sock >= 0) | |
556 | return 0; | |
557 | ||
558 | /* Check connect thread. */ | |
559 | if (zclient->t_connect) | |
560 | return 0; | |
561 | ||
4ecc09d3 DS |
562 | /* |
563 | * If we fail to connect to the socket on initialization, | |
564 | * Let's wait a second and see if we can reconnect. | |
565 | * Cause if we don't connect, we never attempt to | |
566 | * reconnect. On startup if zebra is slow we | |
567 | * can get into this situation. | |
568 | */ | |
569 | while (zclient_socket_connect(zclient) < 0 && zclient->fail < 5) | |
7076bb2f FL |
570 | { |
571 | if (zclient_debug) | |
572 | zlog_debug ("zclient connection fail"); | |
573 | zclient->fail++; | |
4ecc09d3 DS |
574 | sleep (1); |
575 | } | |
576 | ||
577 | if (zclient->sock < 0) | |
578 | { | |
7076bb2f FL |
579 | zclient_event (ZCLIENT_CONNECT, zclient); |
580 | return -1; | |
581 | } | |
718e3744 | 582 | |
7076bb2f FL |
583 | if (set_nonblocking(zclient->sock) < 0) |
584 | zlog_warn("%s: set_nonblocking(%d) failed", __func__, zclient->sock); | |
718e3744 | 585 | |
7076bb2f FL |
586 | /* Clear fail count. */ |
587 | zclient->fail = 0; | |
588 | if (zclient_debug) | |
589 | zlog_debug ("zclient connect success with socket [%d]", zclient->sock); | |
718e3744 | 590 | |
7076bb2f FL |
591 | /* Create read thread. */ |
592 | zclient_event (ZCLIENT_READ, zclient); | |
718e3744 | 593 | |
7076bb2f | 594 | zebra_hello_send (zclient); |
718e3744 | 595 | |
7076bb2f FL |
596 | /* Inform the successful connection. */ |
597 | if (zclient->zebra_connected) | |
598 | (*zclient->zebra_connected) (zclient); | |
718e3744 | 599 | |
7076bb2f | 600 | return 0; |
718e3744 | 601 | } |
6b0655a2 | 602 | |
078430f6 DS |
603 | /* Initialize zebra client. Argument redist_default is unwanted |
604 | redistribute route type. */ | |
605 | void | |
606 | zclient_init (struct zclient *zclient, int redist_default, u_short instance) | |
607 | { | |
608 | int afi, i; | |
609 | ||
610 | /* Enable zebra client connection by default. */ | |
611 | zclient->enable = 1; | |
612 | ||
613 | /* Set -1 to the default socket value. */ | |
614 | zclient->sock = -1; | |
615 | ||
616 | /* Clear redistribution flags. */ | |
617 | for (afi = AFI_IP; afi < AFI_MAX; afi++) | |
618 | for (i = 0; i < ZEBRA_ROUTE_MAX; i++) | |
7076bb2f | 619 | zclient->redist[afi][i] = vrf_bitmap_init(); |
078430f6 DS |
620 | |
621 | /* Set unwanted redistribute route. bgpd does not need BGP route | |
622 | redistribution. */ | |
623 | zclient->redist_default = redist_default; | |
624 | zclient->instance = instance; | |
625 | /* Pending: make afi(s) an arg. */ | |
626 | for (afi = AFI_IP; afi < AFI_MAX; afi++) | |
7076bb2f | 627 | redist_add_instance (&zclient->mi_redist[afi][redist_default], instance); |
078430f6 DS |
628 | |
629 | /* Set default-information redistribute to zero. */ | |
7076bb2f | 630 | zclient->default_information = vrf_bitmap_init ();; |
078430f6 DS |
631 | |
632 | if (zclient_debug) | |
633 | zlog_debug ("zclient_start is called"); | |
634 | ||
7076bb2f FL |
635 | zclient_event (ZCLIENT_SCHEDULE, zclient); |
636 | } | |
078430f6 | 637 | |
7076bb2f FL |
638 | /* This function is a wrapper function for calling zclient_start from |
639 | timer or event thread. */ | |
640 | static int | |
641 | zclient_connect (struct thread *t) | |
642 | { | |
643 | struct zclient *zclient; | |
078430f6 | 644 | |
7076bb2f FL |
645 | zclient = THREAD_ARG (t); |
646 | zclient->t_connect = NULL; | |
078430f6 | 647 | |
078430f6 | 648 | if (zclient_debug) |
7076bb2f | 649 | zlog_debug ("zclient_connect is called"); |
078430f6 | 650 | |
7076bb2f | 651 | return zclient_start (zclient); |
078430f6 DS |
652 | } |
653 | ||
0a589359 | 654 | /* |
655 | * "xdr_encode"-like interface that allows daemon (client) to send | |
656 | * a message to zebra server for a route that needs to be | |
657 | * added/deleted to the kernel. Info about the route is specified | |
658 | * by the caller in a struct zapi_ipv4. zapi_ipv4_read() then writes | |
659 | * the info down the zclient socket using the stream_* functions. | |
660 | * | |
661 | * The corresponding read ("xdr_decode") function on the server | |
662 | * side is zread_ipv4_add()/zread_ipv4_delete(). | |
663 | * | |
664 | * 0 1 2 3 4 5 6 7 8 9 A B C D E F 0 1 2 3 4 5 6 7 8 9 A B C D E F | |
665 | * +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+ | |
666 | * | Length (2) | Command | Route Type | | |
667 | * +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+ | |
668 | * | ZEBRA Flags | Message Flags | Prefix length | | |
669 | * +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+ | |
670 | * | Destination IPv4 Prefix for route | | |
671 | * +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+ | |
672 | * | Nexthop count | | |
673 | * +-+-+-+-+-+-+-+-+ | |
674 | * | |
675 | * | |
676 | * A number of IPv4 nexthop(s) or nexthop interface index(es) are then | |
677 | * described, as per the Nexthop count. Each nexthop described as: | |
678 | * | |
679 | * +-+-+-+-+-+-+-+-+ | |
680 | * | Nexthop Type | Set to one of ZEBRA_NEXTHOP_* | |
681 | * +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+ | |
682 | * | IPv4 Nexthop address or Interface Index number | | |
683 | * +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+ | |
684 | * | |
685 | * Alternatively, if the flags field has ZEBRA_FLAG_BLACKHOLE or | |
686 | * ZEBRA_FLAG_REJECT is set then Nexthop count is set to 1, then _no_ | |
687 | * nexthop information is provided, and the message describes a prefix | |
688 | * to blackhole or reject route. | |
689 | * | |
c8a1cb5c DS |
690 | * The original struct zapi_ipv4, zapi_ipv4_route() and zread_ipv4_*() |
691 | * infrastructure was built around the traditional (32-bit "gate OR | |
692 | * ifindex") nexthop data unit. A special encoding can be used to feed | |
693 | * onlink (64-bit "gate AND ifindex") nexthops into zapi_ipv4_route() | |
694 | * using the same zapi_ipv4 structure. This is done by setting zapi_ipv4 | |
695 | * fields as follows: | |
696 | * - .message |= ZAPI_MESSAGE_NEXTHOP | ZAPI_MESSAGE_ONLINK | |
697 | * - .nexthop_num == .ifindex_num | |
698 | * - .nexthop and .ifindex are filled with gate and ifindex parts of | |
699 | * each compound nexthop, both in the same order | |
700 | * | |
701 | * zapi_ipv4_route() will produce two nexthop data units for each such | |
702 | * interleaved 64-bit nexthop. On the zserv side of the socket it will be | |
703 | * mapped to a singlle NEXTHOP_TYPE_IPV4_IFINDEX_OL RIB nexthop structure. | |
704 | * | |
0a589359 | 705 | * If ZAPI_MESSAGE_DISTANCE is set, the distance value is written as a 1 |
706 | * byte value. | |
707 | * | |
708 | * If ZAPI_MESSAGE_METRIC is set, the metric value is written as an 8 | |
709 | * byte value. | |
710 | * | |
0d9551dc DS |
711 | * If ZAPI_MESSAGE_TAG is set, the tag value is written as a 2 byte value |
712 | * | |
c50ca33a TT |
713 | * If ZAPI_MESSAGE_MTU is set, the mtu value is written as a 4 byte value |
714 | * | |
0a589359 | 715 | * XXX: No attention paid to alignment. |
716 | */ | |
718e3744 | 717 | int |
0a589359 | 718 | zapi_ipv4_route (u_char cmd, struct zclient *zclient, struct prefix_ipv4 *p, |
719 | struct zapi_ipv4 *api) | |
718e3744 | 720 | { |
721 | int i; | |
722 | int psize; | |
723 | struct stream *s; | |
724 | ||
725 | /* Reset stream. */ | |
726 | s = zclient->obuf; | |
727 | stream_reset (s); | |
7076bb2f FL |
728 | |
729 | zclient_create_header (s, cmd, api->vrf_id); | |
c1b9800a | 730 | |
731 | /* Put type and nexthop. */ | |
718e3744 | 732 | stream_putc (s, api->type); |
7c8ff89e | 733 | stream_putw (s, api->instance); |
718e3744 | 734 | stream_putc (s, api->flags); |
735 | stream_putc (s, api->message); | |
5a616c08 | 736 | stream_putw (s, api->safi); |
718e3744 | 737 | |
718e3744 | 738 | /* Put prefix information. */ |
739 | psize = PSIZE (p->prefixlen); | |
740 | stream_putc (s, p->prefixlen); | |
0a589359 | 741 | stream_write (s, (u_char *) & p->prefix, psize); |
718e3744 | 742 | |
743 | /* Nexthop, ifindex, distance and metric information. */ | |
d44ca835 | 744 | if (CHECK_FLAG (api->message, ZAPI_MESSAGE_NEXTHOP)) |
c8a1cb5c DS |
745 | { |
746 | /* traditional 32-bit data units */ | |
595db7f1 | 747 | if (CHECK_FLAG (api->flags, ZEBRA_FLAG_BLACKHOLE)) |
748 | { | |
749 | stream_putc (s, 1); | |
5b30316e | 750 | stream_putc (s, NEXTHOP_TYPE_BLACKHOLE); |
0a589359 | 751 | /* XXX assert(api->nexthop_num == 0); */ |
752 | /* XXX assert(api->ifindex_num == 0); */ | |
595db7f1 | 753 | } |
754 | else | |
755 | stream_putc (s, api->nexthop_num + api->ifindex_num); | |
718e3744 | 756 | |
757 | for (i = 0; i < api->nexthop_num; i++) | |
595db7f1 | 758 | { |
5b30316e | 759 | stream_putc (s, NEXTHOP_TYPE_IPV4); |
595db7f1 | 760 | stream_put_in_addr (s, api->nexthop[i]); |
761 | } | |
718e3744 | 762 | for (i = 0; i < api->ifindex_num; i++) |
595db7f1 | 763 | { |
5b30316e | 764 | stream_putc (s, NEXTHOP_TYPE_IFINDEX); |
595db7f1 | 765 | stream_putl (s, api->ifindex[i]); |
766 | } | |
718e3744 | 767 | } |
768 | ||
769 | if (CHECK_FLAG (api->message, ZAPI_MESSAGE_DISTANCE)) | |
770 | stream_putc (s, api->distance); | |
771 | if (CHECK_FLAG (api->message, ZAPI_MESSAGE_METRIC)) | |
772 | stream_putl (s, api->metric); | |
0d9551dc DS |
773 | if (CHECK_FLAG (api->message, ZAPI_MESSAGE_TAG)) |
774 | stream_putw (s, api->tag); | |
c50ca33a TT |
775 | if (CHECK_FLAG (api->message, ZAPI_MESSAGE_MTU)) |
776 | stream_putl (s, api->mtu); | |
718e3744 | 777 | |
778 | /* Put length at the first point of the stream. */ | |
779 | stream_putw_at (s, 0, stream_get_endp (s)); | |
780 | ||
634f9ea2 | 781 | return zclient_send_message(zclient); |
718e3744 | 782 | } |
783 | ||
784 | #ifdef HAVE_IPV6 | |
8a92a8a0 DS |
785 | int |
786 | zapi_ipv4_route_ipv6_nexthop (u_char cmd, struct zclient *zclient, | |
787 | struct prefix_ipv4 *p, struct zapi_ipv6 *api) | |
788 | { | |
789 | int i; | |
790 | int psize; | |
791 | struct stream *s; | |
792 | ||
793 | /* Reset stream. */ | |
794 | s = zclient->obuf; | |
795 | stream_reset (s); | |
796 | ||
7076bb2f | 797 | zclient_create_header (s, cmd, api->vrf_id); |
8a92a8a0 DS |
798 | |
799 | /* Put type and nexthop. */ | |
800 | stream_putc (s, api->type); | |
801 | stream_putw (s, api->instance); | |
802 | stream_putc (s, api->flags); | |
803 | stream_putc (s, api->message); | |
804 | stream_putw (s, api->safi); | |
805 | ||
806 | /* Put prefix information. */ | |
807 | psize = PSIZE (p->prefixlen); | |
808 | stream_putc (s, p->prefixlen); | |
809 | stream_write (s, (u_char *) & p->prefix, psize); | |
810 | ||
811 | /* Nexthop, ifindex, distance and metric information. */ | |
812 | if (CHECK_FLAG (api->message, ZAPI_MESSAGE_NEXTHOP)) | |
813 | { | |
814 | if (CHECK_FLAG (api->flags, ZEBRA_FLAG_BLACKHOLE)) | |
815 | { | |
816 | stream_putc (s, 1); | |
5b30316e | 817 | stream_putc (s, NEXTHOP_TYPE_BLACKHOLE); |
8a92a8a0 DS |
818 | /* XXX assert(api->nexthop_num == 0); */ |
819 | /* XXX assert(api->ifindex_num == 0); */ | |
820 | } | |
821 | else | |
822 | stream_putc (s, api->nexthop_num + api->ifindex_num); | |
823 | ||
824 | for (i = 0; i < api->nexthop_num; i++) | |
825 | { | |
5b30316e | 826 | stream_putc (s, NEXTHOP_TYPE_IPV6); |
8a92a8a0 DS |
827 | stream_write (s, (u_char *)api->nexthop[i], 16); |
828 | } | |
829 | for (i = 0; i < api->ifindex_num; i++) | |
830 | { | |
5b30316e | 831 | stream_putc (s, NEXTHOP_TYPE_IFINDEX); |
8a92a8a0 DS |
832 | stream_putl (s, api->ifindex[i]); |
833 | } | |
834 | } | |
835 | ||
836 | if (CHECK_FLAG (api->message, ZAPI_MESSAGE_DISTANCE)) | |
837 | stream_putc (s, api->distance); | |
838 | if (CHECK_FLAG (api->message, ZAPI_MESSAGE_METRIC)) | |
839 | stream_putl (s, api->metric); | |
840 | if (CHECK_FLAG (api->message, ZAPI_MESSAGE_TAG)) | |
841 | stream_putw (s, api->tag); | |
c50ca33a TT |
842 | if (CHECK_FLAG (api->message, ZAPI_MESSAGE_MTU)) |
843 | stream_putl (s, api->mtu); | |
8a92a8a0 DS |
844 | |
845 | /* Put length at the first point of the stream. */ | |
846 | stream_putw_at (s, 0, stream_get_endp (s)); | |
847 | ||
848 | return zclient_send_message(zclient); | |
849 | } | |
850 | ||
718e3744 | 851 | int |
0a589359 | 852 | zapi_ipv6_route (u_char cmd, struct zclient *zclient, struct prefix_ipv6 *p, |
718e3744 | 853 | struct zapi_ipv6 *api) |
854 | { | |
855 | int i; | |
856 | int psize; | |
857 | struct stream *s; | |
858 | ||
859 | /* Reset stream. */ | |
860 | s = zclient->obuf; | |
861 | stream_reset (s); | |
862 | ||
7076bb2f | 863 | zclient_create_header (s, cmd, api->vrf_id); |
718e3744 | 864 | |
c1b9800a | 865 | /* Put type and nexthop. */ |
718e3744 | 866 | stream_putc (s, api->type); |
7c8ff89e | 867 | stream_putw (s, api->instance); |
718e3744 | 868 | stream_putc (s, api->flags); |
869 | stream_putc (s, api->message); | |
c7ec179a | 870 | stream_putw (s, api->safi); |
718e3744 | 871 | |
872 | /* Put prefix information. */ | |
873 | psize = PSIZE (p->prefixlen); | |
874 | stream_putc (s, p->prefixlen); | |
875 | stream_write (s, (u_char *)&p->prefix, psize); | |
876 | ||
877 | /* Nexthop, ifindex, distance and metric information. */ | |
878 | if (CHECK_FLAG (api->message, ZAPI_MESSAGE_NEXTHOP)) | |
879 | { | |
c3c0ac83 DS |
880 | if (CHECK_FLAG (api->flags, ZEBRA_FLAG_BLACKHOLE)) |
881 | { | |
882 | stream_putc (s, 1); | |
5b30316e | 883 | stream_putc (s, NEXTHOP_TYPE_BLACKHOLE); |
c3c0ac83 DS |
884 | /* XXX assert(api->nexthop_num == 0); */ |
885 | /* XXX assert(api->ifindex_num == 0); */ | |
886 | } | |
887 | else | |
888 | stream_putc (s, api->nexthop_num + api->ifindex_num); | |
718e3744 | 889 | |
890 | for (i = 0; i < api->nexthop_num; i++) | |
891 | { | |
5b30316e | 892 | stream_putc (s, NEXTHOP_TYPE_IPV6); |
718e3744 | 893 | stream_write (s, (u_char *)api->nexthop[i], 16); |
894 | } | |
895 | for (i = 0; i < api->ifindex_num; i++) | |
896 | { | |
5b30316e | 897 | stream_putc (s, NEXTHOP_TYPE_IFINDEX); |
718e3744 | 898 | stream_putl (s, api->ifindex[i]); |
899 | } | |
900 | } | |
901 | ||
902 | if (CHECK_FLAG (api->message, ZAPI_MESSAGE_DISTANCE)) | |
903 | stream_putc (s, api->distance); | |
904 | if (CHECK_FLAG (api->message, ZAPI_MESSAGE_METRIC)) | |
905 | stream_putl (s, api->metric); | |
0d9551dc DS |
906 | if (CHECK_FLAG (api->message, ZAPI_MESSAGE_TAG)) |
907 | stream_putw (s, api->tag); | |
c50ca33a TT |
908 | if (CHECK_FLAG (api->message, ZAPI_MESSAGE_MTU)) |
909 | stream_putl (s, api->mtu); | |
718e3744 | 910 | |
911 | /* Put length at the first point of the stream. */ | |
912 | stream_putw_at (s, 0, stream_get_endp (s)); | |
913 | ||
634f9ea2 | 914 | return zclient_send_message(zclient); |
718e3744 | 915 | } |
718e3744 | 916 | #endif /* HAVE_IPV6 */ |
917 | ||
0a589359 | 918 | /* |
919 | * send a ZEBRA_REDISTRIBUTE_ADD or ZEBRA_REDISTRIBUTE_DELETE | |
920 | * for the route type (ZEBRA_ROUTE_KERNEL etc.). The zebra server will | |
921 | * then set/unset redist[type] in the client handle (a struct zserv) for the | |
922 | * sending client | |
923 | */ | |
718e3744 | 924 | int |
8bb0831e | 925 | zebra_redistribute_send (int command, struct zclient *zclient, afi_t afi, int type, |
7076bb2f | 926 | u_short instance, vrf_id_t vrf_id) |
718e3744 | 927 | { |
718e3744 | 928 | struct stream *s; |
929 | ||
634f9ea2 | 930 | s = zclient->obuf; |
931 | stream_reset(s); | |
718e3744 | 932 | |
7076bb2f | 933 | zclient_create_header (s, command, vrf_id); |
8bb0831e | 934 | stream_putc (s, afi); |
718e3744 | 935 | stream_putc (s, type); |
7c8ff89e | 936 | stream_putw (s, instance); |
c1b9800a | 937 | |
938 | stream_putw_at (s, 0, stream_get_endp (s)); | |
939 | ||
634f9ea2 | 940 | return zclient_send_message(zclient); |
718e3744 | 941 | } |
942 | ||
18a6dce6 | 943 | /* Router-id update from zebra daemon. */ |
944 | void | |
945 | zebra_router_id_update_read (struct stream *s, struct prefix *rid) | |
946 | { | |
947 | int plen; | |
948 | ||
949 | /* Fetch interface address. */ | |
950 | rid->family = stream_getc (s); | |
951 | ||
952 | plen = prefix_blen (rid); | |
953 | stream_get (&rid->u.prefix, s, plen); | |
954 | rid->prefixlen = stream_getc (s); | |
955 | } | |
956 | ||
718e3744 | 957 | /* Interface addition from zebra daemon. */ |
0a589359 | 958 | /* |
959 | * The format of the message sent with type ZEBRA_INTERFACE_ADD or | |
960 | * ZEBRA_INTERFACE_DELETE from zebra to the client is: | |
961 | * 0 1 2 3 | |
962 | * 0 1 2 3 4 5 6 7 8 9 0 1 2 3 4 5 6 7 8 9 0 1 2 3 4 5 6 7 8 9 0 1 | |
0a589359 | 963 | * +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+ |
964 | * | ifname | | |
965 | * | | | |
966 | * | | | |
967 | * | | | |
968 | * | | | |
969 | * +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+ | |
16f1b9ee OD |
970 | * | ifindex | |
971 | * +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+ | |
972 | * | status | | |
0a589359 | 973 | * +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+ |
16f1b9ee | 974 | * | if_flags | |
c77d4546 | 975 | * | | |
0a589359 | 976 | * +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+ |
16f1b9ee OD |
977 | * | metric | |
978 | * +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+ | |
979 | * | ifmtu | | |
980 | * +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+ | |
981 | * | ifmtu6 | | |
982 | * +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+ | |
983 | * | bandwidth | | |
984 | * +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+ | |
985 | * | Link Layer Type | | |
0a589359 | 986 | * +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+ |
16f1b9ee | 987 | * | Harware Address Length | |
0a589359 | 988 | * +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+ |
16f1b9ee OD |
989 | * | Hardware Address if HW lenght different from 0 | |
990 | * | ... max INTERFACE_HWADDR_MAX | | |
0a589359 | 991 | * +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+ |
16f1b9ee | 992 | * | Link_params? | Whether a link-params follows: 1 or 0. |
0a589359 | 993 | * +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+ |
16f1b9ee OD |
994 | * | Link_params 0 or 1 INTERFACE_LINK_PARAMS_SIZE sized | |
995 | * | .... (struct if_link_params). | | |
0a589359 | 996 | * +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+ |
997 | */ | |
998 | ||
2fcc254e | 999 | static void |
ebe32f70 | 1000 | zclient_vrf_add (struct zclient *zclient, vrf_id_t vrf_id) |
1892f15e DS |
1001 | { |
1002 | struct vrf *vrf; | |
1003 | char vrfname_tmp[VRF_NAMSIZ]; | |
1004 | ||
1005 | /* Read interface name. */ | |
ebe32f70 | 1006 | stream_get (vrfname_tmp, zclient->ibuf, VRF_NAMSIZ); |
1892f15e DS |
1007 | |
1008 | /* Lookup/create vrf by vrf_id. */ | |
1009 | vrf = vrf_get (vrf_id, vrfname_tmp); | |
1010 | ||
2fcc254e | 1011 | vrf_enable (vrf); |
1892f15e DS |
1012 | } |
1013 | ||
2fcc254e | 1014 | static void |
ebe32f70 | 1015 | zclient_vrf_delete (struct zclient *zclient, vrf_id_t vrf_id) |
1892f15e DS |
1016 | { |
1017 | struct vrf *vrf; | |
1018 | ||
1019 | /* Lookup vrf by vrf_id. */ | |
1020 | vrf = vrf_lookup (vrf_id); | |
1021 | ||
beef1990 DS |
1022 | /* |
1023 | * If a routing protocol doesn't know about a | |
1024 | * vrf that is about to be deleted. There is | |
1025 | * no point in attempting to delete it. | |
1026 | */ | |
1027 | if (!vrf) | |
1028 | return; | |
1029 | ||
2fcc254e | 1030 | vrf_delete (vrf); |
1892f15e DS |
1031 | } |
1032 | ||
718e3744 | 1033 | struct interface * |
7076bb2f | 1034 | zebra_interface_add_read (struct stream *s, vrf_id_t vrf_id) |
718e3744 | 1035 | { |
1036 | struct interface *ifp; | |
02ff83c5 | 1037 | char ifname_tmp[INTERFACE_NAMSIZ]; |
718e3744 | 1038 | |
1039 | /* Read interface name. */ | |
1040 | stream_get (ifname_tmp, s, INTERFACE_NAMSIZ); | |
1041 | ||
a349198f | 1042 | /* Lookup/create interface by name. */ |
7076bb2f FL |
1043 | ifp = if_get_by_name_len_vrf (ifname_tmp, |
1044 | strnlen (ifname_tmp, INTERFACE_NAMSIZ), | |
85f9da7f | 1045 | vrf_id, 0); |
718e3744 | 1046 | |
51d4ef83 | 1047 | zebra_interface_if_set_value (s, ifp); |
718e3744 | 1048 | |
718e3744 | 1049 | return ifp; |
1050 | } | |
1051 | ||
0a589359 | 1052 | /* |
1053 | * Read interface up/down msg (ZEBRA_INTERFACE_UP/ZEBRA_INTERFACE_DOWN) | |
1054 | * from zebra server. The format of this message is the same as | |
1055 | * that sent for ZEBRA_INTERFACE_ADD/ZEBRA_INTERFACE_DELETE (see | |
1056 | * comments for zebra_interface_add_read), except that no sockaddr_dl | |
1057 | * is sent at the tail of the message. | |
1058 | */ | |
718e3744 | 1059 | struct interface * |
7076bb2f | 1060 | zebra_interface_state_read (struct stream *s, vrf_id_t vrf_id) |
718e3744 | 1061 | { |
1062 | struct interface *ifp; | |
02ff83c5 | 1063 | char ifname_tmp[INTERFACE_NAMSIZ]; |
718e3744 | 1064 | |
1065 | /* Read interface name. */ | |
1066 | stream_get (ifname_tmp, s, INTERFACE_NAMSIZ); | |
1067 | ||
1068 | /* Lookup this by interface index. */ | |
7076bb2f FL |
1069 | ifp = if_lookup_by_name_len_vrf (ifname_tmp, |
1070 | strnlen (ifname_tmp, INTERFACE_NAMSIZ), | |
1071 | vrf_id); | |
b4dd5eaa | 1072 | if (ifp == NULL) |
1073 | { | |
1074 | zlog_warn ("INTERFACE_STATE: Cannot find IF %s in VRF %d", | |
1075 | ifname_tmp, vrf_id); | |
1076 | return NULL; | |
1077 | } | |
718e3744 | 1078 | |
51d4ef83 | 1079 | zebra_interface_if_set_value (s, ifp); |
718e3744 | 1080 | |
1081 | return ifp; | |
1082 | } | |
1083 | ||
16f1b9ee OD |
1084 | static void |
1085 | link_params_set_value(struct stream *s, struct if_link_params *iflp) | |
1086 | { | |
1087 | ||
1088 | if (iflp == NULL) | |
1089 | return; | |
1090 | ||
1091 | iflp->lp_status = stream_getl (s); | |
1092 | iflp->te_metric = stream_getl (s); | |
1093 | iflp->max_bw = stream_getf (s); | |
1094 | iflp->max_rsv_bw = stream_getf (s); | |
1095 | uint32_t bwclassnum = stream_getl (s); | |
1096 | { | |
1097 | unsigned int i; | |
1098 | for (i = 0; i < bwclassnum && i < MAX_CLASS_TYPE; i++) | |
1099 | iflp->unrsv_bw[i] = stream_getf (s); | |
1100 | if (i < bwclassnum) | |
1101 | zlog_err ("%s: received %d > %d (MAX_CLASS_TYPE) bw entries" | |
1102 | " - outdated library?", | |
1103 | __func__, bwclassnum, MAX_CLASS_TYPE); | |
1104 | } | |
1105 | iflp->admin_grp = stream_getl (s); | |
1106 | iflp->rmt_as = stream_getl (s); | |
1107 | iflp->rmt_ip.s_addr = stream_get_ipv4 (s); | |
1108 | ||
1109 | iflp->av_delay = stream_getl (s); | |
1110 | iflp->min_delay = stream_getl (s); | |
1111 | iflp->max_delay = stream_getl (s); | |
1112 | iflp->delay_var = stream_getl (s); | |
1113 | ||
1114 | iflp->pkt_loss = stream_getf (s); | |
1115 | iflp->res_bw = stream_getf (s); | |
1116 | iflp->ava_bw = stream_getf (s); | |
1117 | iflp->use_bw = stream_getf (s); | |
1118 | } | |
1119 | ||
1120 | struct interface * | |
1121 | zebra_interface_link_params_read (struct stream *s) | |
1122 | { | |
1123 | struct if_link_params *iflp; | |
1124 | uint32_t ifindex = stream_getl (s); | |
1125 | ||
1126 | struct interface *ifp = if_lookup_by_index (ifindex); | |
1127 | ||
1128 | if (ifp == NULL || s == NULL) | |
1129 | { | |
1130 | zlog_err ("%s: unknown ifindex %u, shouldn't happen", | |
1131 | __func__, ifindex); | |
1132 | return NULL; | |
1133 | } | |
1134 | ||
1135 | if ((iflp = if_link_params_get (ifp)) == NULL) | |
1136 | return NULL; | |
1137 | ||
1138 | link_params_set_value(s, iflp); | |
1139 | ||
1140 | return ifp; | |
1141 | } | |
1142 | ||
1143 | void | |
1144 | zebra_interface_if_set_value (struct stream *s, struct interface *ifp) | |
1145 | { | |
1146 | u_char link_params_status = 0; | |
1147 | ||
1148 | /* Read interface's index. */ | |
1149 | ifp->ifindex = stream_getl (s); | |
1150 | ifp->status = stream_getc (s); | |
1151 | ||
1152 | /* Read interface's value. */ | |
1153 | ifp->flags = stream_getq (s); | |
1154 | ifp->ptm_enable = stream_getc (s); | |
1155 | ifp->ptm_status = stream_getc (s); | |
1156 | ifp->metric = stream_getl (s); | |
1157 | ifp->mtu = stream_getl (s); | |
1158 | ifp->mtu6 = stream_getl (s); | |
1159 | ifp->bandwidth = stream_getl (s); | |
1160 | ifp->ll_type = stream_getl (s); | |
1161 | ifp->hw_addr_len = stream_getl (s); | |
1162 | if (ifp->hw_addr_len) | |
1163 | stream_get (ifp->hw_addr, s, MIN(ifp->hw_addr_len, INTERFACE_HWADDR_MAX)); | |
1164 | ||
1165 | /* Read Traffic Engineering status */ | |
1166 | link_params_status = stream_getc (s); | |
1167 | /* Then, Traffic Engineering parameters if any */ | |
1168 | if (link_params_status) | |
1169 | { | |
1170 | struct if_link_params *iflp = if_link_params_get (ifp); | |
1171 | link_params_set_value(s, iflp); | |
1172 | } | |
1173 | } | |
1174 | ||
1175 | size_t | |
1176 | zebra_interface_link_params_write (struct stream *s, struct interface *ifp) | |
1177 | { | |
1178 | size_t w; | |
1179 | struct if_link_params *iflp; | |
1180 | int i; | |
1181 | ||
1182 | if (s == NULL || ifp == NULL || ifp->link_params == NULL) | |
1183 | return 0; | |
1184 | ||
1185 | iflp = ifp->link_params; | |
1186 | w = 0; | |
1187 | ||
1188 | w += stream_putl (s, iflp->lp_status); | |
1189 | ||
1190 | w += stream_putl (s, iflp->te_metric); | |
1191 | w += stream_putf (s, iflp->max_bw); | |
1192 | w += stream_putf (s, iflp->max_rsv_bw); | |
1193 | ||
1194 | w += stream_putl (s, MAX_CLASS_TYPE); | |
1195 | for (i = 0; i < MAX_CLASS_TYPE; i++) | |
1196 | w += stream_putf (s, iflp->unrsv_bw[i]); | |
1197 | ||
1198 | w += stream_putl (s, iflp->admin_grp); | |
1199 | w += stream_putl (s, iflp->rmt_as); | |
1200 | w += stream_put_in_addr (s, &iflp->rmt_ip); | |
1201 | ||
1202 | w += stream_putl (s, iflp->av_delay); | |
1203 | w += stream_putl (s, iflp->min_delay); | |
1204 | w += stream_putl (s, iflp->max_delay); | |
1205 | w += stream_putl (s, iflp->delay_var); | |
1206 | ||
1207 | w += stream_putf (s, iflp->pkt_loss); | |
1208 | w += stream_putf (s, iflp->res_bw); | |
1209 | w += stream_putf (s, iflp->ava_bw); | |
1210 | w += stream_putf (s, iflp->use_bw); | |
1211 | ||
1212 | return w; | |
1213 | } | |
1214 | ||
1215 | /* | |
0a589359 | 1216 | * format of message for address additon is: |
1217 | * 0 | |
1218 | * 0 1 2 3 4 5 6 7 | |
1219 | * +-+-+-+-+-+-+-+-+ | |
1220 | * | type | ZEBRA_INTERFACE_ADDRESS_ADD or | |
1221 | * +-+-+-+-+-+-+-+-+ ZEBRA_INTERFACE_ADDRES_DELETE | |
1222 | * | | | |
1223 | * + + | |
1224 | * | ifindex | | |
1225 | * + + | |
1226 | * | | | |
1227 | * + + | |
1228 | * | | | |
1229 | * +-+-+-+-+-+-+-+-+ | |
1230 | * | ifc_flags | flags for connected address | |
1231 | * +-+-+-+-+-+-+-+-+ | |
1232 | * | addr_family | | |
1233 | * +-+-+-+-+-+-+-+-+ | |
1234 | * | addr... | | |
1235 | * : : | |
1236 | * | | | |
1237 | * +-+-+-+-+-+-+-+-+ | |
1238 | * | addr_len | len of addr. E.g., addr_len = 4 for ipv4 addrs. | |
1239 | * +-+-+-+-+-+-+-+-+ | |
1240 | * | daddr.. | | |
1241 | * : : | |
1242 | * | | | |
1243 | * +-+-+-+-+-+-+-+-+ | |
0a589359 | 1244 | */ |
1245 | ||
3fb9cd6e | 1246 | static int |
1247 | memconstant(const void *s, int c, size_t n) | |
1248 | { | |
1249 | const u_char *p = s; | |
1250 | ||
1251 | while (n-- > 0) | |
1252 | if (*p++ != c) | |
1253 | return 0; | |
1254 | return 1; | |
1255 | } | |
1256 | ||
d5a5c8f0 | 1257 | |
718e3744 | 1258 | struct connected * |
7076bb2f | 1259 | zebra_interface_address_read (int type, struct stream *s, vrf_id_t vrf_id) |
718e3744 | 1260 | { |
b892f1dd | 1261 | ifindex_t ifindex; |
718e3744 | 1262 | struct interface *ifp; |
1263 | struct connected *ifc; | |
0a589359 | 1264 | struct prefix p, d; |
718e3744 | 1265 | int family; |
1266 | int plen; | |
0a589359 | 1267 | u_char ifc_flags; |
718e3744 | 1268 | |
0a589359 | 1269 | memset (&p, 0, sizeof(p)); |
1270 | memset (&d, 0, sizeof(d)); | |
718e3744 | 1271 | |
1272 | /* Get interface index. */ | |
1273 | ifindex = stream_getl (s); | |
1274 | ||
1275 | /* Lookup index. */ | |
7076bb2f | 1276 | ifp = if_lookup_by_index_vrf (ifindex, vrf_id); |
718e3744 | 1277 | if (ifp == NULL) |
1278 | { | |
b4dd5eaa | 1279 | zlog_warn ("INTERFACE_ADDRESS_%s: Cannot find IF %u in VRF %d", |
1280 | (type == ZEBRA_INTERFACE_ADDRESS_ADD) ? "ADD" : "DEL", | |
1281 | ifindex, vrf_id); | |
718e3744 | 1282 | return NULL; |
1283 | } | |
1284 | ||
1285 | /* Fetch flag. */ | |
0a589359 | 1286 | ifc_flags = stream_getc (s); |
718e3744 | 1287 | |
1288 | /* Fetch interface address. */ | |
1289 | family = p.family = stream_getc (s); | |
1290 | ||
0a589359 | 1291 | plen = prefix_blen (&p); |
1292 | stream_get (&p.u.prefix, s, plen); | |
718e3744 | 1293 | p.prefixlen = stream_getc (s); |
1294 | ||
1295 | /* Fetch destination address. */ | |
0a589359 | 1296 | stream_get (&d.u.prefix, s, plen); |
718e3744 | 1297 | d.family = family; |
1298 | ||
0a589359 | 1299 | if (type == ZEBRA_INTERFACE_ADDRESS_ADD) |
1300 | { | |
38485402 DS |
1301 | ifc = connected_lookup_prefix_exact (ifp, &p); |
1302 | if (!ifc) | |
1303 | { | |
1304 | /* N.B. NULL destination pointers are encoded as all zeroes */ | |
1305 | ifc = connected_add_by_prefix(ifp, &p, (memconstant(&d.u.prefix,0,plen) ? | |
1306 | NULL : &d)); | |
1307 | } | |
1308 | if (ifc) | |
e4529636 AS |
1309 | { |
1310 | ifc->flags = ifc_flags; | |
1311 | if (ifc->destination) | |
1312 | ifc->destination->prefixlen = ifc->address->prefixlen; | |
90444ca3 DL |
1313 | else if (CHECK_FLAG(ifc->flags, ZEBRA_IFA_PEER)) |
1314 | { | |
1315 | /* carp interfaces on OpenBSD with 0.0.0.0/0 as "peer" */ | |
855110bb | 1316 | char buf[PREFIX_STRLEN]; |
90444ca3 DL |
1317 | zlog_warn("warning: interface %s address %s " |
1318 | "with peer flag set, but no peer address!", | |
855110bb TT |
1319 | ifp->name, |
1320 | prefix2str (ifc->address, buf, sizeof buf)); | |
90444ca3 DL |
1321 | UNSET_FLAG(ifc->flags, ZEBRA_IFA_PEER); |
1322 | } | |
e4529636 | 1323 | } |
0a589359 | 1324 | } |
1325 | else | |
1326 | { | |
1327 | assert (type == ZEBRA_INTERFACE_ADDRESS_DELETE); | |
1328 | ifc = connected_delete_by_prefix(ifp, &p); | |
1329 | } | |
718e3744 | 1330 | |
1331 | return ifc; | |
1332 | } | |
0a589359 | 1333 | |
a80beece DS |
1334 | /* |
1335 | * format of message for neighbor connected address is: | |
1336 | * 0 | |
1337 | * 0 1 2 3 4 5 6 7 | |
1338 | * +-+-+-+-+-+-+-+-+ | |
1339 | * | type | ZEBRA_INTERFACE_NBR_ADDRESS_ADD or | |
1340 | * +-+-+-+-+-+-+-+-+ ZEBRA_INTERFACE_NBR_ADDRES_DELETE | |
1341 | * | | | |
1342 | * + + | |
1343 | * | ifindex | | |
1344 | * + + | |
1345 | * | | | |
1346 | * + + | |
1347 | * | | | |
1348 | * +-+-+-+-+-+-+-+-+ | |
1349 | * | addr_family | | |
1350 | * +-+-+-+-+-+-+-+-+ | |
1351 | * | addr... | | |
1352 | * : : | |
1353 | * | | | |
1354 | * +-+-+-+-+-+-+-+-+ | |
1355 | * | addr_len | len of addr. | |
1356 | * +-+-+-+-+-+-+-+-+ | |
1357 | */ | |
1358 | struct nbr_connected * | |
7076bb2f | 1359 | zebra_interface_nbr_address_read (int type, struct stream *s, vrf_id_t vrf_id) |
a80beece DS |
1360 | { |
1361 | unsigned int ifindex; | |
1362 | struct interface *ifp; | |
1363 | struct prefix p; | |
1364 | struct nbr_connected *ifc; | |
1365 | ||
1366 | /* Get interface index. */ | |
1367 | ifindex = stream_getl (s); | |
1368 | ||
1369 | /* Lookup index. */ | |
f1aa3df6 | 1370 | ifp = if_lookup_by_index_vrf (ifindex, vrf_id); |
a80beece DS |
1371 | if (ifp == NULL) |
1372 | { | |
f1aa3df6 | 1373 | zlog_warn ("INTERFACE_NBR_%s: Cannot find IF %u in VRF %d", |
1374 | (type == ZEBRA_INTERFACE_NBR_ADDRESS_ADD) ? "ADD" : "DELETE", | |
1375 | ifindex, vrf_id); | |
a80beece DS |
1376 | return NULL; |
1377 | } | |
1378 | ||
1379 | p.family = stream_getc (s); | |
1380 | stream_get (&p.u.prefix, s, prefix_blen (&p)); | |
1381 | p.prefixlen = stream_getc (s); | |
1382 | ||
1383 | if (type == ZEBRA_INTERFACE_NBR_ADDRESS_ADD) | |
1384 | { | |
1385 | /* Currently only supporting P2P links, so any new RA source address is | |
1386 | considered as the replacement of the previously learnt Link-Local address. */ | |
1387 | if (!(ifc = listnode_head(ifp->nbr_connected))) | |
1388 | { | |
1389 | ifc = nbr_connected_new (); | |
1390 | ifc->address = prefix_new (); | |
1391 | ifc->ifp = ifp; | |
1392 | listnode_add (ifp->nbr_connected, ifc); | |
1393 | } | |
1394 | ||
1395 | prefix_copy(ifc->address, &p); | |
1396 | } | |
1397 | else | |
1398 | { | |
1399 | assert (type == ZEBRA_INTERFACE_NBR_ADDRESS_DELETE); | |
1400 | ||
1401 | ifc = nbr_connected_check(ifp, &p); | |
1402 | if (ifc) | |
1403 | listnode_delete (ifp->nbr_connected, ifc); | |
1404 | } | |
1405 | ||
1406 | return ifc; | |
1407 | } | |
6b0655a2 | 1408 | |
c8e264b6 | 1409 | struct interface * |
1410 | zebra_interface_vrf_update_read (struct stream *s, vrf_id_t vrf_id, | |
1411 | vrf_id_t *new_vrf_id) | |
1412 | { | |
1413 | unsigned int ifindex; | |
1414 | struct interface *ifp; | |
1415 | vrf_id_t new_id = VRF_DEFAULT; | |
1416 | ||
1417 | /* Get interface index. */ | |
1418 | ifindex = stream_getl (s); | |
1419 | ||
1420 | /* Lookup interface. */ | |
1421 | ifp = if_lookup_by_index_vrf (ifindex, vrf_id); | |
1422 | if (ifp == NULL) | |
1423 | { | |
1424 | zlog_warn ("INTERFACE_VRF_UPDATE: Cannot find IF %u in VRF %d", | |
1425 | ifindex, vrf_id); | |
1426 | return NULL; | |
1427 | } | |
1428 | ||
1429 | /* Fetch new VRF Id. */ | |
1430 | new_id = stream_getw (s); | |
1431 | ||
1432 | *new_vrf_id = new_id; | |
1433 | return ifp; | |
1434 | } | |
1435 | ||
718e3744 | 1436 | /* Zebra client message read function. */ |
634f9ea2 | 1437 | static int |
718e3744 | 1438 | zclient_read (struct thread *thread) |
1439 | { | |
634f9ea2 | 1440 | size_t already; |
c1b9800a | 1441 | uint16_t length, command; |
1442 | uint8_t marker, version; | |
7076bb2f | 1443 | vrf_id_t vrf_id; |
718e3744 | 1444 | struct zclient *zclient; |
1445 | ||
1446 | /* Get socket to zebra. */ | |
718e3744 | 1447 | zclient = THREAD_ARG (thread); |
1448 | zclient->t_read = NULL; | |
1449 | ||
634f9ea2 | 1450 | /* Read zebra header (if we don't have it already). */ |
1451 | if ((already = stream_get_endp(zclient->ibuf)) < ZEBRA_HEADER_SIZE) | |
718e3744 | 1452 | { |
634f9ea2 | 1453 | ssize_t nbyte; |
1454 | if (((nbyte = stream_read_try(zclient->ibuf, zclient->sock, | |
1455 | ZEBRA_HEADER_SIZE-already)) == 0) || | |
1456 | (nbyte == -1)) | |
1457 | { | |
1458 | if (zclient_debug) | |
1459 | zlog_debug ("zclient connection closed socket [%d].", zclient->sock); | |
1460 | return zclient_failed(zclient); | |
1461 | } | |
1462 | if (nbyte != (ssize_t)(ZEBRA_HEADER_SIZE-already)) | |
1463 | { | |
1464 | /* Try again later. */ | |
1465 | zclient_event (ZCLIENT_READ, zclient); | |
1466 | return 0; | |
1467 | } | |
1468 | already = ZEBRA_HEADER_SIZE; | |
718e3744 | 1469 | } |
1470 | ||
634f9ea2 | 1471 | /* Reset to read from the beginning of the incoming packet. */ |
1472 | stream_set_getp(zclient->ibuf, 0); | |
718e3744 | 1473 | |
c1b9800a | 1474 | /* Fetch header values. */ |
718e3744 | 1475 | length = stream_getw (zclient->ibuf); |
c1b9800a | 1476 | marker = stream_getc (zclient->ibuf); |
1477 | version = stream_getc (zclient->ibuf); | |
7076bb2f | 1478 | vrf_id = stream_getw (zclient->ibuf); |
c1b9800a | 1479 | command = stream_getw (zclient->ibuf); |
1480 | ||
1481 | if (marker != ZEBRA_HEADER_MARKER || version != ZSERV_VERSION) | |
1482 | { | |
1483 | zlog_err("%s: socket %d version mismatch, marker %d, version %d", | |
1484 | __func__, zclient->sock, marker, version); | |
1485 | return zclient_failed(zclient); | |
1486 | } | |
1487 | ||
634f9ea2 | 1488 | if (length < ZEBRA_HEADER_SIZE) |
1489 | { | |
1490 | zlog_err("%s: socket %d message length %u is less than %d ", | |
1491 | __func__, zclient->sock, length, ZEBRA_HEADER_SIZE); | |
1492 | return zclient_failed(zclient); | |
1493 | } | |
1494 | ||
718e3744 | 1495 | /* Length check. */ |
634f9ea2 | 1496 | if (length > STREAM_SIZE(zclient->ibuf)) |
718e3744 | 1497 | { |
634f9ea2 | 1498 | struct stream *ns; |
1499 | zlog_warn("%s: message size %u exceeds buffer size %lu, expanding...", | |
1500 | __func__, length, (u_long)STREAM_SIZE(zclient->ibuf)); | |
1501 | ns = stream_new(length); | |
1502 | stream_copy(ns, zclient->ibuf); | |
718e3744 | 1503 | stream_free (zclient->ibuf); |
634f9ea2 | 1504 | zclient->ibuf = ns; |
718e3744 | 1505 | } |
718e3744 | 1506 | |
1507 | /* Read rest of zebra packet. */ | |
634f9ea2 | 1508 | if (already < length) |
1509 | { | |
1510 | ssize_t nbyte; | |
1511 | if (((nbyte = stream_read_try(zclient->ibuf, zclient->sock, | |
1512 | length-already)) == 0) || | |
1513 | (nbyte == -1)) | |
1514 | { | |
1515 | if (zclient_debug) | |
1516 | zlog_debug("zclient connection closed socket [%d].", zclient->sock); | |
1517 | return zclient_failed(zclient); | |
1518 | } | |
1519 | if (nbyte != (ssize_t)(length-already)) | |
1520 | { | |
1521 | /* Try again later. */ | |
1522 | zclient_event (ZCLIENT_READ, zclient); | |
1523 | return 0; | |
1524 | } | |
1525 | } | |
1526 | ||
1527 | length -= ZEBRA_HEADER_SIZE; | |
718e3744 | 1528 | |
0a589359 | 1529 | if (zclient_debug) |
7076bb2f | 1530 | zlog_debug("zclient 0x%p command 0x%x VRF %u\n", (void *)zclient, command, vrf_id); |
0a589359 | 1531 | |
718e3744 | 1532 | switch (command) |
1533 | { | |
18a6dce6 | 1534 | case ZEBRA_ROUTER_ID_UPDATE: |
1535 | if (zclient->router_id_update) | |
7076bb2f | 1536 | (*zclient->router_id_update) (command, zclient, length, vrf_id); |
18a6dce6 | 1537 | break; |
1892f15e | 1538 | case ZEBRA_VRF_ADD: |
ebe32f70 | 1539 | zclient_vrf_add (zclient, vrf_id); |
1892f15e DS |
1540 | break; |
1541 | case ZEBRA_VRF_DELETE: | |
ebe32f70 | 1542 | zclient_vrf_delete (zclient, vrf_id); |
1892f15e | 1543 | break; |
718e3744 | 1544 | case ZEBRA_INTERFACE_ADD: |
1545 | if (zclient->interface_add) | |
7076bb2f | 1546 | (*zclient->interface_add) (command, zclient, length, vrf_id); |
718e3744 | 1547 | break; |
1548 | case ZEBRA_INTERFACE_DELETE: | |
1549 | if (zclient->interface_delete) | |
7076bb2f | 1550 | (*zclient->interface_delete) (command, zclient, length, vrf_id); |
718e3744 | 1551 | break; |
1552 | case ZEBRA_INTERFACE_ADDRESS_ADD: | |
1553 | if (zclient->interface_address_add) | |
7076bb2f | 1554 | (*zclient->interface_address_add) (command, zclient, length, vrf_id); |
718e3744 | 1555 | break; |
1556 | case ZEBRA_INTERFACE_ADDRESS_DELETE: | |
1557 | if (zclient->interface_address_delete) | |
7076bb2f | 1558 | (*zclient->interface_address_delete) (command, zclient, length, vrf_id); |
718e3744 | 1559 | break; |
68fe91d6 | 1560 | case ZEBRA_INTERFACE_BFD_DEST_UPDATE: |
1561 | if (zclient->interface_bfd_dest_update) | |
7076bb2f | 1562 | (*zclient->interface_bfd_dest_update) (command, zclient, length, vrf_id); |
d5a5c8f0 | 1563 | break; |
a80beece DS |
1564 | case ZEBRA_INTERFACE_NBR_ADDRESS_ADD: |
1565 | if (zclient->interface_nbr_address_add) | |
7076bb2f | 1566 | (*zclient->interface_nbr_address_add) (command, zclient, length, vrf_id); |
a80beece DS |
1567 | break; |
1568 | case ZEBRA_INTERFACE_NBR_ADDRESS_DELETE: | |
1569 | if (zclient->interface_nbr_address_delete) | |
7076bb2f | 1570 | (*zclient->interface_nbr_address_delete) (command, zclient, length, vrf_id); |
a80beece | 1571 | break; |
718e3744 | 1572 | case ZEBRA_INTERFACE_UP: |
1573 | if (zclient->interface_up) | |
7076bb2f | 1574 | (*zclient->interface_up) (command, zclient, length, vrf_id); |
718e3744 | 1575 | break; |
1576 | case ZEBRA_INTERFACE_DOWN: | |
1577 | if (zclient->interface_down) | |
7076bb2f | 1578 | (*zclient->interface_down) (command, zclient, length, vrf_id); |
c8e264b6 | 1579 | break; |
1580 | case ZEBRA_INTERFACE_VRF_UPDATE: | |
1581 | if (zclient->interface_vrf_update) | |
1582 | (*zclient->interface_vrf_update) (command, zclient, length, vrf_id); | |
718e3744 | 1583 | break; |
1584 | case ZEBRA_IPV4_ROUTE_ADD: | |
1585 | if (zclient->ipv4_route_add) | |
7076bb2f | 1586 | (*zclient->ipv4_route_add) (command, zclient, length, vrf_id); |
718e3744 | 1587 | break; |
1588 | case ZEBRA_IPV4_ROUTE_DELETE: | |
1589 | if (zclient->ipv4_route_delete) | |
7076bb2f | 1590 | (*zclient->ipv4_route_delete) (command, zclient, length, vrf_id); |
718e3744 | 1591 | break; |
1592 | case ZEBRA_IPV6_ROUTE_ADD: | |
1593 | if (zclient->ipv6_route_add) | |
7076bb2f | 1594 | (*zclient->ipv6_route_add) (command, zclient, length, vrf_id); |
718e3744 | 1595 | break; |
1596 | case ZEBRA_IPV6_ROUTE_DELETE: | |
1597 | if (zclient->ipv6_route_delete) | |
7076bb2f | 1598 | (*zclient->ipv6_route_delete) (command, zclient, length, vrf_id); |
718e3744 | 1599 | break; |
fb018d25 DS |
1600 | case ZEBRA_NEXTHOP_UPDATE: |
1601 | if (zclient_debug) | |
1602 | zlog_debug("zclient rcvd nexthop update\n"); | |
1603 | if (zclient->nexthop_update) | |
7076bb2f | 1604 | (*zclient->nexthop_update) (command, zclient, length, vrf_id); |
fb018d25 | 1605 | break; |
078430f6 DS |
1606 | case ZEBRA_IMPORT_CHECK_UPDATE: |
1607 | if (zclient_debug) | |
1608 | zlog_debug("zclient rcvd import check update\n"); | |
1609 | if (zclient->import_check_update) | |
7076bb2f | 1610 | (*zclient->import_check_update) (command, zclient, length, vrf_id); |
078430f6 | 1611 | break; |
c43ed2e4 DS |
1612 | case ZEBRA_BFD_DEST_REPLAY: |
1613 | if (zclient->bfd_dest_replay) | |
7076bb2f | 1614 | (*zclient->bfd_dest_replay) (command, zclient, length, vrf_id); |
c43ed2e4 | 1615 | break; |
5048fe14 | 1616 | case ZEBRA_REDISTRIBUTE_IPV4_ADD: |
1617 | if (zclient->redistribute_route_ipv4_add) | |
7076bb2f | 1618 | (*zclient->redistribute_route_ipv4_add) (command, zclient, length, vrf_id); |
5048fe14 | 1619 | break; |
1620 | case ZEBRA_REDISTRIBUTE_IPV4_DEL: | |
1621 | if (zclient->redistribute_route_ipv4_del) | |
7076bb2f | 1622 | (*zclient->redistribute_route_ipv4_del) (command, zclient, length, vrf_id); |
5048fe14 | 1623 | break; |
1624 | case ZEBRA_REDISTRIBUTE_IPV6_ADD: | |
1625 | if (zclient->redistribute_route_ipv6_add) | |
7076bb2f | 1626 | (*zclient->redistribute_route_ipv6_add) (command, zclient, length, vrf_id); |
5048fe14 | 1627 | break; |
1628 | case ZEBRA_REDISTRIBUTE_IPV6_DEL: | |
1629 | if (zclient->redistribute_route_ipv6_del) | |
7076bb2f | 1630 | (*zclient->redistribute_route_ipv6_del) (command, zclient, length, vrf_id); |
16f1b9ee OD |
1631 | case ZEBRA_INTERFACE_LINK_PARAMS: |
1632 | if (zclient->interface_link_params) | |
1633 | (*zclient->interface_link_params) (command, zclient, length); | |
5048fe14 | 1634 | break; |
718e3744 | 1635 | default: |
1636 | break; | |
1637 | } | |
1638 | ||
634f9ea2 | 1639 | if (zclient->sock < 0) |
1640 | /* Connection was closed during packet processing. */ | |
1641 | return -1; | |
1642 | ||
718e3744 | 1643 | /* Register read thread. */ |
634f9ea2 | 1644 | stream_reset(zclient->ibuf); |
718e3744 | 1645 | zclient_event (ZCLIENT_READ, zclient); |
1646 | ||
1647 | return 0; | |
1648 | } | |
1649 | ||
1650 | void | |
8bb0831e | 1651 | zclient_redistribute (int command, struct zclient *zclient, afi_t afi, int type, |
7076bb2f | 1652 | u_short instance, vrf_id_t vrf_id) |
718e3744 | 1653 | { |
718e3744 | 1654 | |
7076bb2f FL |
1655 | if (instance) { |
1656 | if (command == ZEBRA_REDISTRIBUTE_ADD) | |
1657 | { | |
1658 | if (redist_check_instance(&zclient->mi_redist[afi][type], instance)) | |
1659 | return; | |
1660 | redist_add_instance(&zclient->mi_redist[afi][type], instance); | |
1661 | } | |
1662 | else | |
1663 | { | |
1664 | if (!redist_check_instance(&zclient->mi_redist[afi][type], instance)) | |
1665 | return; | |
1666 | redist_del_instance(&zclient->mi_redist[afi][type], instance); | |
1667 | } | |
1668 | ||
1669 | } else { | |
1670 | if (command == ZEBRA_REDISTRIBUTE_ADD) | |
1671 | { | |
1672 | if (vrf_bitmap_check (zclient->redist[afi][type], vrf_id)) | |
1673 | return; | |
1674 | vrf_bitmap_set (zclient->redist[afi][type], vrf_id); | |
1675 | } | |
1676 | else | |
1677 | { | |
1678 | if (!vrf_bitmap_check (zclient->redist[afi][type], vrf_id)) | |
1679 | return; | |
1680 | vrf_bitmap_unset (zclient->redist[afi][type], vrf_id); | |
1681 | } | |
1682 | } | |
718e3744 | 1683 | |
1684 | if (zclient->sock > 0) | |
7076bb2f | 1685 | zebra_redistribute_send (command, zclient, afi, type, instance, vrf_id); |
718e3744 | 1686 | } |
1687 | ||
718e3744 | 1688 | |
1689 | void | |
7076bb2f FL |
1690 | zclient_redistribute_default (int command, struct zclient *zclient, |
1691 | vrf_id_t vrf_id) | |
718e3744 | 1692 | { |
718e3744 | 1693 | |
0a589359 | 1694 | if (command == ZEBRA_REDISTRIBUTE_DEFAULT_ADD) |
1695 | { | |
7076bb2f | 1696 | if (vrf_bitmap_check (zclient->default_information, vrf_id)) |
0a589359 | 1697 | return; |
7076bb2f | 1698 | vrf_bitmap_set (zclient->default_information, vrf_id); |
0a589359 | 1699 | } |
1700 | else | |
1701 | { | |
7076bb2f | 1702 | if (!vrf_bitmap_check (zclient->default_information, vrf_id)) |
0a589359 | 1703 | return; |
7076bb2f | 1704 | vrf_bitmap_unset (zclient->default_information, vrf_id); |
0a589359 | 1705 | } |
718e3744 | 1706 | |
1707 | if (zclient->sock > 0) | |
7076bb2f | 1708 | zebra_message_send (zclient, command, vrf_id); |
718e3744 | 1709 | } |
1710 | ||
718e3744 | 1711 | static void |
1712 | zclient_event (enum event event, struct zclient *zclient) | |
1713 | { | |
1714 | switch (event) | |
1715 | { | |
1716 | case ZCLIENT_SCHEDULE: | |
1717 | if (! zclient->t_connect) | |
1718 | zclient->t_connect = | |
4140ca4d | 1719 | thread_add_event (zclient->master, zclient_connect, zclient, 0); |
718e3744 | 1720 | break; |
1721 | case ZCLIENT_CONNECT: | |
1722 | if (zclient->fail >= 10) | |
1723 | return; | |
1724 | if (zclient_debug) | |
8ddca704 | 1725 | zlog_debug ("zclient connect schedule interval is %d", |
718e3744 | 1726 | zclient->fail < 3 ? 10 : 60); |
1727 | if (! zclient->t_connect) | |
1728 | zclient->t_connect = | |
4140ca4d | 1729 | thread_add_timer (zclient->master, zclient_connect, zclient, |
718e3744 | 1730 | zclient->fail < 3 ? 10 : 60); |
1731 | break; | |
1732 | case ZCLIENT_READ: | |
1733 | zclient->t_read = | |
4140ca4d | 1734 | thread_add_read (zclient->master, zclient_read, zclient, zclient->sock); |
718e3744 | 1735 | break; |
1736 | } | |
1737 | } | |
b5114685 | 1738 | |
744f4685 | 1739 | const char *zclient_serv_path_get() |
12e41d03 DL |
1740 | { |
1741 | return zclient_serv_path ? zclient_serv_path : ZEBRA_SERV_PATH; | |
1742 | } | |
1743 | ||
b5114685 VT |
1744 | void |
1745 | zclient_serv_path_set (char *path) | |
1746 | { | |
1747 | struct stat sb; | |
1748 | ||
1749 | /* reset */ | |
1750 | zclient_serv_path = NULL; | |
1751 | ||
1752 | /* test if `path' is socket. don't set it otherwise. */ | |
1753 | if (stat(path, &sb) == -1) | |
1754 | { | |
1755 | zlog_warn ("%s: zebra socket `%s' does not exist", __func__, path); | |
1756 | return; | |
1757 | } | |
1758 | ||
1759 | if ((sb.st_mode & S_IFMT) != S_IFSOCK) | |
1760 | { | |
1761 | zlog_warn ("%s: `%s' is not unix socket, sir", __func__, path); | |
1762 | return; | |
1763 | } | |
1764 | ||
1765 | /* it seems that path is unix socket */ | |
1766 | zclient_serv_path = path; | |
1767 | } | |
1768 |