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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 | * | |
896014f4 DL |
17 | * You should have received a copy of the GNU General Public License along |
18 | * with this program; see the file COPYING; if not, write to the Free Software | |
19 | * Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA | |
718e3744 | 20 | */ |
21 | ||
22 | #include <zebra.h> | |
23 | ||
24 | #include "prefix.h" | |
25 | #include "stream.h" | |
634f9ea2 | 26 | #include "buffer.h" |
718e3744 | 27 | #include "network.h" |
7922fc65 DS |
28 | #include "vrf.h" |
29 | #include "vrf_int.h" | |
718e3744 | 30 | #include "if.h" |
31 | #include "log.h" | |
32 | #include "thread.h" | |
33 | #include "zclient.h" | |
34 | #include "memory.h" | |
35 | #include "table.h" | |
5b30316e | 36 | #include "nexthop.h" |
fea12efb | 37 | #include "mpls.h" |
6b0655a2 | 38 | |
4a1ab8e4 | 39 | DEFINE_MTYPE_STATIC(LIB, ZCLIENT, "Zclient") |
14878121 | 40 | DEFINE_MTYPE_STATIC(LIB, REDIST_INST, "Redistribution instance IDs") |
4a1ab8e4 | 41 | |
718e3744 | 42 | /* Zebra client events. */ |
43 | enum event {ZCLIENT_SCHEDULE, ZCLIENT_READ, ZCLIENT_CONNECT}; | |
44 | ||
45 | /* Prototype for event manager. */ | |
46 | static void zclient_event (enum event, struct zclient *); | |
47 | ||
744f4685 | 48 | const char *zclient_serv_path = NULL; |
b5114685 | 49 | |
718e3744 | 50 | /* This file local debug flag. */ |
51 | int zclient_debug = 0; | |
6b0655a2 | 52 | |
718e3744 | 53 | /* Allocate zclient structure. */ |
54 | struct zclient * | |
4140ca4d | 55 | zclient_new (struct thread_master *master) |
718e3744 | 56 | { |
57 | struct zclient *zclient; | |
393deb9b | 58 | zclient = XCALLOC (MTYPE_ZCLIENT, sizeof (struct zclient)); |
718e3744 | 59 | |
60 | zclient->ibuf = stream_new (ZEBRA_MAX_PACKET_SIZ); | |
61 | zclient->obuf = stream_new (ZEBRA_MAX_PACKET_SIZ); | |
634f9ea2 | 62 | zclient->wb = buffer_new(0); |
4140ca4d | 63 | zclient->master = master; |
718e3744 | 64 | |
65 | return zclient; | |
66 | } | |
67 | ||
228da428 | 68 | /* This function is only called when exiting, because |
634f9ea2 | 69 | many parts of the code do not check for I/O errors, so they could |
70 | reference an invalid pointer if the structure was ever freed. | |
634f9ea2 | 71 | |
228da428 | 72 | Free zclient structure. */ |
718e3744 | 73 | void |
74 | zclient_free (struct zclient *zclient) | |
75 | { | |
634f9ea2 | 76 | if (zclient->ibuf) |
77 | stream_free(zclient->ibuf); | |
78 | if (zclient->obuf) | |
79 | stream_free(zclient->obuf); | |
80 | if (zclient->wb) | |
81 | buffer_free(zclient->wb); | |
82 | ||
718e3744 | 83 | XFREE (MTYPE_ZCLIENT, zclient); |
84 | } | |
85 | ||
43e7c3b4 | 86 | u_short * |
7c8ff89e DS |
87 | redist_check_instance (struct redist_proto *red, u_short instance) |
88 | { | |
89 | struct listnode *node; | |
90 | u_short *id; | |
91 | ||
92 | if (!red->instances) | |
43e7c3b4 | 93 | return NULL; |
7c8ff89e DS |
94 | |
95 | for (ALL_LIST_ELEMENTS_RO (red->instances, node, id)) | |
96 | if (*id == instance) | |
43e7c3b4 | 97 | return id; |
7c8ff89e | 98 | |
43e7c3b4 | 99 | return NULL; |
7c8ff89e DS |
100 | } |
101 | ||
102 | void | |
103 | redist_add_instance (struct redist_proto *red, u_short instance) | |
104 | { | |
105 | u_short *in; | |
106 | ||
107 | red->enabled = 1; | |
108 | ||
109 | if (!red->instances) | |
110 | red->instances = list_new(); | |
111 | ||
14878121 | 112 | in = XMALLOC (MTYPE_REDIST_INST, sizeof(u_short)); |
7c8ff89e DS |
113 | *in = instance; |
114 | listnode_add (red->instances, in); | |
115 | } | |
116 | ||
117 | void | |
118 | redist_del_instance (struct redist_proto *red, u_short instance) | |
119 | { | |
43e7c3b4 | 120 | u_short *id; |
7c8ff89e | 121 | |
43e7c3b4 RW |
122 | id = redist_check_instance (red, instance); |
123 | if (! id) | |
24873f0c | 124 | return; |
7c8ff89e | 125 | |
43e7c3b4 | 126 | listnode_delete(red->instances, id); |
14878121 | 127 | XFREE (MTYPE_REDIST_INST, id); |
43e7c3b4 | 128 | if (!red->instances->count) |
7c8ff89e | 129 | { |
43e7c3b4 RW |
130 | red->enabled = 0; |
131 | list_free(red->instances); | |
132 | red->instances = NULL; | |
7c8ff89e DS |
133 | } |
134 | } | |
135 | ||
718e3744 | 136 | /* Stop zebra client services. */ |
137 | void | |
138 | zclient_stop (struct zclient *zclient) | |
139 | { | |
615d4265 DL |
140 | afi_t afi; |
141 | int i; | |
142 | ||
718e3744 | 143 | if (zclient_debug) |
8ddca704 | 144 | zlog_debug ("zclient stopped"); |
718e3744 | 145 | |
146 | /* Stop threads. */ | |
634f9ea2 | 147 | THREAD_OFF(zclient->t_read); |
148 | THREAD_OFF(zclient->t_connect); | |
149 | THREAD_OFF(zclient->t_write); | |
150 | ||
151 | /* Reset streams. */ | |
152 | stream_reset(zclient->ibuf); | |
153 | stream_reset(zclient->obuf); | |
154 | ||
155 | /* Empty the write buffer. */ | |
156 | buffer_reset(zclient->wb); | |
718e3744 | 157 | |
158 | /* Close socket. */ | |
159 | if (zclient->sock >= 0) | |
160 | { | |
161 | close (zclient->sock); | |
162 | zclient->sock = -1; | |
163 | } | |
164 | zclient->fail = 0; | |
615d4265 DL |
165 | |
166 | for (afi = AFI_IP; afi < AFI_MAX; afi++) | |
41246cb6 DS |
167 | { |
168 | for (i = 0; i < ZEBRA_ROUTE_MAX; i++) | |
169 | { | |
170 | vrf_bitmap_free(zclient->redist[afi][i]); | |
171 | zclient->redist[afi][i] = VRF_BITMAP_NULL; | |
172 | } | |
173 | redist_del_instance(&zclient->mi_redist[afi][zclient->redist_default], | |
174 | zclient->instance); | |
175 | } | |
176 | ||
615d4265 DL |
177 | vrf_bitmap_free(zclient->default_information); |
178 | zclient->default_information = VRF_BITMAP_NULL; | |
718e3744 | 179 | } |
180 | ||
181 | void | |
182 | zclient_reset (struct zclient *zclient) | |
183 | { | |
7076bb2f | 184 | afi_t afi; |
3d68677e | 185 | |
718e3744 | 186 | zclient_stop (zclient); |
3d68677e DS |
187 | |
188 | for (afi = AFI_IP; afi < AFI_MAX; afi++) | |
7076bb2f | 189 | redist_del_instance (&zclient->mi_redist[afi][zclient->redist_default], zclient->instance); |
3d68677e | 190 | |
7c8ff89e | 191 | zclient_init (zclient, zclient->redist_default, zclient->instance); |
718e3744 | 192 | } |
193 | ||
b5114685 VT |
194 | #ifdef HAVE_TCP_ZEBRA |
195 | ||
718e3744 | 196 | /* Make socket to zebra daemon. Return zebra socket. */ |
b5114685 | 197 | static int |
634f9ea2 | 198 | zclient_socket(void) |
718e3744 | 199 | { |
200 | int sock; | |
201 | int ret; | |
202 | struct sockaddr_in serv; | |
203 | ||
204 | /* We should think about IPv6 connection. */ | |
205 | sock = socket (AF_INET, SOCK_STREAM, 0); | |
206 | if (sock < 0) | |
207 | return -1; | |
208 | ||
209 | /* Make server socket. */ | |
210 | memset (&serv, 0, sizeof (struct sockaddr_in)); | |
211 | serv.sin_family = AF_INET; | |
212 | serv.sin_port = htons (ZEBRA_PORT); | |
6f0e3f6e | 213 | #ifdef HAVE_STRUCT_SOCKADDR_IN_SIN_LEN |
718e3744 | 214 | serv.sin_len = sizeof (struct sockaddr_in); |
6f0e3f6e | 215 | #endif /* HAVE_STRUCT_SOCKADDR_IN_SIN_LEN */ |
718e3744 | 216 | serv.sin_addr.s_addr = htonl (INADDR_LOOPBACK); |
217 | ||
218 | /* Connect to zebra. */ | |
219 | ret = connect (sock, (struct sockaddr *) &serv, sizeof (serv)); | |
220 | if (ret < 0) | |
221 | { | |
b0e67bb0 DS |
222 | if (zclient_debug) |
223 | zlog_warn ("%s connect failure: %d(%s)", __PRETTY_FUNCTION__, | |
224 | errno, safe_strerror (errno)); | |
718e3744 | 225 | close (sock); |
226 | return -1; | |
227 | } | |
228 | return sock; | |
229 | } | |
230 | ||
3414d035 | 231 | #else |
b5114685 | 232 | |
718e3744 | 233 | /* For sockaddr_un. */ |
234 | #include <sys/un.h> | |
235 | ||
1b91e000 | 236 | static int |
8c328f11 | 237 | zclient_socket_un (const char *path) |
718e3744 | 238 | { |
239 | int ret; | |
240 | int sock, len; | |
241 | struct sockaddr_un addr; | |
242 | ||
243 | sock = socket (AF_UNIX, SOCK_STREAM, 0); | |
244 | if (sock < 0) | |
245 | return -1; | |
246 | ||
247 | /* Make server socket. */ | |
248 | memset (&addr, 0, sizeof (struct sockaddr_un)); | |
249 | addr.sun_family = AF_UNIX; | |
250 | strncpy (addr.sun_path, path, strlen (path)); | |
6f0e3f6e | 251 | #ifdef HAVE_STRUCT_SOCKADDR_UN_SUN_LEN |
718e3744 | 252 | len = addr.sun_len = SUN_LEN(&addr); |
253 | #else | |
254 | len = sizeof (addr.sun_family) + strlen (addr.sun_path); | |
6f0e3f6e | 255 | #endif /* HAVE_STRUCT_SOCKADDR_UN_SUN_LEN */ |
718e3744 | 256 | |
257 | ret = connect (sock, (struct sockaddr *) &addr, len); | |
258 | if (ret < 0) | |
259 | { | |
b0e67bb0 DS |
260 | if (zclient_debug) |
261 | zlog_warn ("%s connect failure: %d(%s)", __PRETTY_FUNCTION__, | |
262 | errno, safe_strerror (errno)); | |
718e3744 | 263 | close (sock); |
264 | return -1; | |
265 | } | |
266 | return sock; | |
267 | } | |
268 | ||
3414d035 VT |
269 | #endif /* HAVE_TCP_ZEBRA */ |
270 | ||
b5114685 VT |
271 | /** |
272 | * Connect to zebra daemon. | |
273 | * @param zclient a pointer to zclient structure | |
274 | * @return socket fd just to make sure that connection established | |
275 | * @see zclient_init | |
276 | * @see zclient_new | |
277 | */ | |
278 | int | |
279 | zclient_socket_connect (struct zclient *zclient) | |
280 | { | |
281 | #ifdef HAVE_TCP_ZEBRA | |
282 | zclient->sock = zclient_socket (); | |
283 | #else | |
12e41d03 | 284 | zclient->sock = zclient_socket_un (zclient_serv_path_get()); |
b5114685 VT |
285 | #endif |
286 | return zclient->sock; | |
287 | } | |
288 | ||
634f9ea2 | 289 | static int |
290 | zclient_failed(struct zclient *zclient) | |
291 | { | |
292 | zclient->fail++; | |
293 | zclient_stop(zclient); | |
294 | zclient_event(ZCLIENT_CONNECT, zclient); | |
295 | return -1; | |
296 | } | |
297 | ||
298 | static int | |
299 | zclient_flush_data(struct thread *thread) | |
300 | { | |
301 | struct zclient *zclient = THREAD_ARG(thread); | |
302 | ||
303 | zclient->t_write = NULL; | |
304 | if (zclient->sock < 0) | |
305 | return -1; | |
306 | switch (buffer_flush_available(zclient->wb, zclient->sock)) | |
307 | { | |
308 | case BUFFER_ERROR: | |
309 | zlog_warn("%s: buffer_flush_available failed on zclient fd %d, closing", | |
310 | __func__, zclient->sock); | |
311 | return zclient_failed(zclient); | |
312 | break; | |
313 | case BUFFER_PENDING: | |
66e78ae6 QY |
314 | zclient->t_write = NULL; |
315 | thread_add_write(zclient->master, zclient_flush_data, zclient, zclient->sock, | |
316 | &zclient->t_write); | |
634f9ea2 | 317 | break; |
318 | case BUFFER_EMPTY: | |
319 | break; | |
320 | } | |
321 | return 0; | |
322 | } | |
323 | ||
718e3744 | 324 | int |
634f9ea2 | 325 | zclient_send_message(struct zclient *zclient) |
326 | { | |
327 | if (zclient->sock < 0) | |
328 | return -1; | |
329 | switch (buffer_write(zclient->wb, zclient->sock, STREAM_DATA(zclient->obuf), | |
330 | stream_get_endp(zclient->obuf))) | |
331 | { | |
332 | case BUFFER_ERROR: | |
333 | zlog_warn("%s: buffer_write failed to zclient fd %d, closing", | |
334 | __func__, zclient->sock); | |
335 | return zclient_failed(zclient); | |
336 | break; | |
337 | case BUFFER_EMPTY: | |
338 | THREAD_OFF(zclient->t_write); | |
339 | break; | |
340 | case BUFFER_PENDING: | |
ffa2c898 QY |
341 | thread_add_write(zclient->master, zclient_flush_data, zclient, |
342 | zclient->sock, &zclient->t_write); | |
634f9ea2 | 343 | break; |
344 | } | |
345 | return 0; | |
346 | } | |
347 | ||
d211086a | 348 | void |
7076bb2f | 349 | zclient_create_header (struct stream *s, uint16_t command, vrf_id_t vrf_id) |
c1b9800a | 350 | { |
351 | /* length placeholder, caller can update */ | |
352 | stream_putw (s, ZEBRA_HEADER_SIZE); | |
353 | stream_putc (s, ZEBRA_HEADER_MARKER); | |
354 | stream_putc (s, ZSERV_VERSION); | |
7076bb2f | 355 | stream_putw (s, vrf_id); |
c1b9800a | 356 | stream_putw (s, command); |
357 | } | |
358 | ||
55119089 ND |
359 | int |
360 | zclient_read_header (struct stream *s, int sock, u_int16_t *size, u_char *marker, | |
e7a2870b | 361 | u_char *version, vrf_id_t *vrf_id, u_int16_t *cmd) |
55119089 ND |
362 | { |
363 | if (stream_read (s, sock, ZEBRA_HEADER_SIZE) != ZEBRA_HEADER_SIZE) | |
364 | return -1; | |
365 | ||
366 | *size = stream_getw (s) - ZEBRA_HEADER_SIZE; | |
367 | *marker = stream_getc (s); | |
368 | *version = stream_getc (s); | |
369 | *vrf_id = stream_getw (s); | |
370 | *cmd = stream_getw (s); | |
371 | ||
195dd232 DS |
372 | if (*version != ZSERV_VERSION || *marker != ZEBRA_HEADER_MARKER) |
373 | { | |
374 | zlog_err("%s: socket %d version mismatch, marker %d, version %d", | |
375 | __func__, sock, *marker, *version); | |
376 | return -1; | |
377 | } | |
378 | ||
55119089 ND |
379 | if (*size && stream_read (s, sock, *size) != *size) |
380 | return -1; | |
381 | ||
382 | return 0; | |
383 | } | |
384 | ||
634f9ea2 | 385 | /* Send simple Zebra message. */ |
386 | static int | |
7076bb2f | 387 | zebra_message_send (struct zclient *zclient, int command, vrf_id_t vrf_id) |
718e3744 | 388 | { |
389 | struct stream *s; | |
390 | ||
391 | /* Get zclient output buffer. */ | |
392 | s = zclient->obuf; | |
393 | stream_reset (s); | |
394 | ||
395 | /* Send very simple command only Zebra message. */ | |
7076bb2f | 396 | zclient_create_header (s, command, vrf_id); |
c1b9800a | 397 | |
634f9ea2 | 398 | return zclient_send_message(zclient); |
718e3744 | 399 | } |
400 | ||
2ea1ab1c VT |
401 | static int |
402 | zebra_hello_send (struct zclient *zclient) | |
403 | { | |
404 | struct stream *s; | |
405 | ||
406 | if (zclient->redist_default) | |
407 | { | |
408 | s = zclient->obuf; | |
409 | stream_reset (s); | |
410 | ||
7076bb2f FL |
411 | /* The VRF ID in the HELLO message is always 0. */ |
412 | zclient_create_header (s, ZEBRA_HELLO, VRF_DEFAULT); | |
2ea1ab1c | 413 | stream_putc (s, zclient->redist_default); |
7c8ff89e | 414 | stream_putw (s, zclient->instance); |
2ea1ab1c VT |
415 | stream_putw_at (s, 0, stream_get_endp (s)); |
416 | return zclient_send_message(zclient); | |
417 | } | |
418 | ||
419 | return 0; | |
420 | } | |
421 | ||
0e5223e7 | 422 | /* Send register requests to zebra daemon for the information in a VRF. */ |
7076bb2f | 423 | void |
0e5223e7 | 424 | zclient_send_reg_requests (struct zclient *zclient, vrf_id_t vrf_id) |
7076bb2f FL |
425 | { |
426 | int i; | |
427 | afi_t afi; | |
428 | ||
429 | /* zclient is disabled. */ | |
430 | if (! zclient->enable) | |
431 | return; | |
432 | ||
433 | /* If not connected to the zebra yet. */ | |
434 | if (zclient->sock < 0) | |
435 | return; | |
436 | ||
437 | if (zclient_debug) | |
0e5223e7 | 438 | zlog_debug ("%s: send register messages for VRF %u", __func__, vrf_id); |
7076bb2f FL |
439 | |
440 | /* We need router-id information. */ | |
441 | zebra_message_send (zclient, ZEBRA_ROUTER_ID_ADD, vrf_id); | |
442 | ||
443 | /* We need interface information. */ | |
444 | zebra_message_send (zclient, ZEBRA_INTERFACE_ADD, vrf_id); | |
445 | ||
446 | /* Set unwanted redistribute route. */ | |
447 | for (afi = AFI_IP; afi < AFI_MAX; afi++) | |
448 | vrf_bitmap_set (zclient->redist[afi][zclient->redist_default], vrf_id); | |
449 | ||
450 | /* Flush all redistribute request. */ | |
451 | if (vrf_id == VRF_DEFAULT) | |
452 | for (afi = AFI_IP; afi < AFI_MAX; afi++) | |
453 | for (i = 0; i < ZEBRA_ROUTE_MAX; i++) | |
454 | if (zclient->mi_redist[afi][i].enabled) | |
455 | { | |
456 | struct listnode *node; | |
457 | u_short *id; | |
458 | ||
459 | for (ALL_LIST_ELEMENTS_RO(zclient->mi_redist[afi][i].instances, node, id)) | |
460 | if (!(i == zclient->redist_default && *id == zclient->instance)) | |
461 | zebra_redistribute_send (ZEBRA_REDISTRIBUTE_ADD, zclient, afi, i, | |
462 | *id, VRF_DEFAULT); | |
463 | } | |
464 | ||
465 | /* Flush all redistribute request. */ | |
466 | for (afi = AFI_IP; afi < AFI_MAX; afi++) | |
467 | for (i = 0; i < ZEBRA_ROUTE_MAX; i++) | |
468 | if (i != zclient->redist_default && | |
469 | vrf_bitmap_check (zclient->redist[afi][i], vrf_id)) | |
470 | zebra_redistribute_send (ZEBRA_REDISTRIBUTE_ADD, zclient, afi, i, 0, vrf_id); | |
471 | ||
472 | /* If default information is needed. */ | |
473 | if (vrf_bitmap_check (zclient->default_information, VRF_DEFAULT)) | |
474 | zebra_message_send (zclient, ZEBRA_REDISTRIBUTE_DEFAULT_ADD, vrf_id); | |
475 | } | |
476 | ||
0e5223e7 | 477 | /* Send unregister requests to zebra daemon for the information in a VRF. */ |
478 | void | |
479 | zclient_send_dereg_requests (struct zclient *zclient, vrf_id_t vrf_id) | |
480 | { | |
481 | int i; | |
482 | afi_t afi; | |
483 | ||
484 | /* zclient is disabled. */ | |
485 | if (! zclient->enable) | |
486 | return; | |
487 | ||
488 | /* If not connected to the zebra yet. */ | |
489 | if (zclient->sock < 0) | |
490 | return; | |
491 | ||
492 | if (zclient_debug) | |
493 | zlog_debug ("%s: send deregister messages for VRF %u", __func__, vrf_id); | |
494 | ||
495 | /* We need router-id information. */ | |
496 | zebra_message_send (zclient, ZEBRA_ROUTER_ID_DELETE, vrf_id); | |
497 | ||
498 | /* We need interface information. */ | |
499 | zebra_message_send (zclient, ZEBRA_INTERFACE_DELETE, vrf_id); | |
500 | ||
501 | /* Set unwanted redistribute route. */ | |
502 | for (afi = AFI_IP; afi < AFI_MAX; afi++) | |
503 | vrf_bitmap_set (zclient->redist[afi][zclient->redist_default], vrf_id); | |
504 | ||
505 | /* Flush all redistribute request. */ | |
506 | if (vrf_id == VRF_DEFAULT) | |
507 | for (afi = AFI_IP; afi < AFI_MAX; afi++) | |
508 | for (i = 0; i < ZEBRA_ROUTE_MAX; i++) | |
509 | if (zclient->mi_redist[afi][i].enabled) | |
510 | { | |
511 | struct listnode *node; | |
512 | u_short *id; | |
513 | ||
514 | for (ALL_LIST_ELEMENTS_RO(zclient->mi_redist[afi][i].instances, node, id)) | |
515 | if (!(i == zclient->redist_default && *id == zclient->instance)) | |
516 | zebra_redistribute_send (ZEBRA_REDISTRIBUTE_DELETE, zclient, afi, i, | |
517 | *id, VRF_DEFAULT); | |
518 | } | |
519 | ||
520 | /* Flush all redistribute request. */ | |
521 | for (afi = AFI_IP; afi < AFI_MAX; afi++) | |
522 | for (i = 0; i < ZEBRA_ROUTE_MAX; i++) | |
523 | if (i != zclient->redist_default && | |
524 | vrf_bitmap_check (zclient->redist[afi][i], vrf_id)) | |
525 | zebra_redistribute_send (ZEBRA_REDISTRIBUTE_DELETE, zclient, afi, i, 0, vrf_id); | |
526 | ||
527 | /* If default information is needed. */ | |
528 | if (vrf_bitmap_check (zclient->default_information, VRF_DEFAULT)) | |
529 | zebra_message_send (zclient, ZEBRA_REDISTRIBUTE_DEFAULT_DELETE, vrf_id); | |
530 | } | |
531 | ||
4a04e5f7 | 532 | /* Send request to zebra daemon to start or stop RA. */ |
533 | void | |
534 | zclient_send_interface_radv_req (struct zclient *zclient, vrf_id_t vrf_id, | |
5c81b96a | 535 | struct interface *ifp, int enable, int ra_interval) |
4a04e5f7 | 536 | { |
537 | struct stream *s; | |
538 | ||
539 | /* zclient is disabled. */ | |
540 | if (!zclient->enable) | |
541 | return; | |
542 | ||
543 | /* If not connected to the zebra yet. */ | |
544 | if (zclient->sock < 0) | |
545 | return; | |
546 | ||
547 | /* Form and send message. */ | |
548 | s = zclient->obuf; | |
549 | stream_reset (s); | |
550 | ||
551 | if (enable) | |
552 | zclient_create_header (s, ZEBRA_INTERFACE_ENABLE_RADV, vrf_id); | |
553 | else | |
554 | zclient_create_header (s, ZEBRA_INTERFACE_DISABLE_RADV, vrf_id); | |
555 | ||
556 | stream_putl (s, ifp->ifindex); | |
5c81b96a | 557 | stream_putl (s, ra_interval); |
4a04e5f7 | 558 | |
559 | stream_putw_at (s, 0, stream_get_endp (s)); | |
560 | ||
561 | zclient_send_message(zclient); | |
562 | } | |
563 | ||
718e3744 | 564 | /* Make connection to zebra daemon. */ |
565 | int | |
566 | zclient_start (struct zclient *zclient) | |
567 | { | |
7076bb2f FL |
568 | if (zclient_debug) |
569 | zlog_info ("zclient_start is called"); | |
570 | ||
571 | /* zclient is disabled. */ | |
572 | if (! zclient->enable) | |
573 | return 0; | |
718e3744 | 574 | |
718e3744 | 575 | /* If already connected to the zebra. */ |
576 | if (zclient->sock >= 0) | |
577 | return 0; | |
578 | ||
579 | /* Check connect thread. */ | |
580 | if (zclient->t_connect) | |
581 | return 0; | |
582 | ||
b0e67bb0 | 583 | if (zclient_socket_connect(zclient) < 0) |
7076bb2f FL |
584 | { |
585 | if (zclient_debug) | |
586 | zlog_debug ("zclient connection fail"); | |
587 | zclient->fail++; | |
588 | zclient_event (ZCLIENT_CONNECT, zclient); | |
589 | return -1; | |
590 | } | |
718e3744 | 591 | |
7076bb2f FL |
592 | if (set_nonblocking(zclient->sock) < 0) |
593 | zlog_warn("%s: set_nonblocking(%d) failed", __func__, zclient->sock); | |
718e3744 | 594 | |
7076bb2f FL |
595 | /* Clear fail count. */ |
596 | zclient->fail = 0; | |
597 | if (zclient_debug) | |
598 | zlog_debug ("zclient connect success with socket [%d]", zclient->sock); | |
718e3744 | 599 | |
7076bb2f FL |
600 | /* Create read thread. */ |
601 | zclient_event (ZCLIENT_READ, zclient); | |
718e3744 | 602 | |
7076bb2f | 603 | zebra_hello_send (zclient); |
718e3744 | 604 | |
7076bb2f FL |
605 | /* Inform the successful connection. */ |
606 | if (zclient->zebra_connected) | |
607 | (*zclient->zebra_connected) (zclient); | |
718e3744 | 608 | |
7076bb2f | 609 | return 0; |
718e3744 | 610 | } |
6b0655a2 | 611 | |
078430f6 DS |
612 | /* Initialize zebra client. Argument redist_default is unwanted |
613 | redistribute route type. */ | |
614 | void | |
615 | zclient_init (struct zclient *zclient, int redist_default, u_short instance) | |
616 | { | |
617 | int afi, i; | |
618 | ||
619 | /* Enable zebra client connection by default. */ | |
620 | zclient->enable = 1; | |
621 | ||
622 | /* Set -1 to the default socket value. */ | |
623 | zclient->sock = -1; | |
624 | ||
625 | /* Clear redistribution flags. */ | |
626 | for (afi = AFI_IP; afi < AFI_MAX; afi++) | |
627 | for (i = 0; i < ZEBRA_ROUTE_MAX; i++) | |
7076bb2f | 628 | zclient->redist[afi][i] = vrf_bitmap_init(); |
078430f6 DS |
629 | |
630 | /* Set unwanted redistribute route. bgpd does not need BGP route | |
631 | redistribution. */ | |
632 | zclient->redist_default = redist_default; | |
633 | zclient->instance = instance; | |
634 | /* Pending: make afi(s) an arg. */ | |
635 | for (afi = AFI_IP; afi < AFI_MAX; afi++) | |
7076bb2f | 636 | redist_add_instance (&zclient->mi_redist[afi][redist_default], instance); |
078430f6 DS |
637 | |
638 | /* Set default-information redistribute to zero. */ | |
7076bb2f | 639 | zclient->default_information = vrf_bitmap_init ();; |
078430f6 DS |
640 | |
641 | if (zclient_debug) | |
642 | zlog_debug ("zclient_start is called"); | |
643 | ||
7076bb2f FL |
644 | zclient_event (ZCLIENT_SCHEDULE, zclient); |
645 | } | |
078430f6 | 646 | |
7076bb2f FL |
647 | /* This function is a wrapper function for calling zclient_start from |
648 | timer or event thread. */ | |
649 | static int | |
650 | zclient_connect (struct thread *t) | |
651 | { | |
652 | struct zclient *zclient; | |
078430f6 | 653 | |
7076bb2f FL |
654 | zclient = THREAD_ARG (t); |
655 | zclient->t_connect = NULL; | |
078430f6 | 656 | |
078430f6 | 657 | if (zclient_debug) |
7076bb2f | 658 | zlog_debug ("zclient_connect is called"); |
078430f6 | 659 | |
7076bb2f | 660 | return zclient_start (zclient); |
078430f6 DS |
661 | } |
662 | ||
0a589359 | 663 | /* |
664 | * "xdr_encode"-like interface that allows daemon (client) to send | |
665 | * a message to zebra server for a route that needs to be | |
666 | * added/deleted to the kernel. Info about the route is specified | |
667 | * by the caller in a struct zapi_ipv4. zapi_ipv4_read() then writes | |
668 | * the info down the zclient socket using the stream_* functions. | |
669 | * | |
670 | * The corresponding read ("xdr_decode") function on the server | |
671 | * side is zread_ipv4_add()/zread_ipv4_delete(). | |
672 | * | |
673 | * 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 | |
674 | * +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+ | |
675 | * | Length (2) | Command | Route Type | | |
676 | * +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+ | |
677 | * | ZEBRA Flags | Message Flags | Prefix length | | |
678 | * +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+ | |
679 | * | Destination IPv4 Prefix for route | | |
680 | * +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+ | |
681 | * | Nexthop count | | |
682 | * +-+-+-+-+-+-+-+-+ | |
683 | * | |
684 | * | |
685 | * A number of IPv4 nexthop(s) or nexthop interface index(es) are then | |
686 | * described, as per the Nexthop count. Each nexthop described as: | |
687 | * | |
688 | * +-+-+-+-+-+-+-+-+ | |
689 | * | Nexthop Type | Set to one of ZEBRA_NEXTHOP_* | |
690 | * +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+ | |
691 | * | IPv4 Nexthop address or Interface Index number | | |
692 | * +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+ | |
693 | * | |
694 | * Alternatively, if the flags field has ZEBRA_FLAG_BLACKHOLE or | |
695 | * ZEBRA_FLAG_REJECT is set then Nexthop count is set to 1, then _no_ | |
696 | * nexthop information is provided, and the message describes a prefix | |
697 | * to blackhole or reject route. | |
698 | * | |
c8a1cb5c DS |
699 | * The original struct zapi_ipv4, zapi_ipv4_route() and zread_ipv4_*() |
700 | * infrastructure was built around the traditional (32-bit "gate OR | |
701 | * ifindex") nexthop data unit. A special encoding can be used to feed | |
702 | * onlink (64-bit "gate AND ifindex") nexthops into zapi_ipv4_route() | |
703 | * using the same zapi_ipv4 structure. This is done by setting zapi_ipv4 | |
704 | * fields as follows: | |
705 | * - .message |= ZAPI_MESSAGE_NEXTHOP | ZAPI_MESSAGE_ONLINK | |
706 | * - .nexthop_num == .ifindex_num | |
707 | * - .nexthop and .ifindex are filled with gate and ifindex parts of | |
708 | * each compound nexthop, both in the same order | |
709 | * | |
710 | * zapi_ipv4_route() will produce two nexthop data units for each such | |
711 | * interleaved 64-bit nexthop. On the zserv side of the socket it will be | |
712 | * mapped to a singlle NEXTHOP_TYPE_IPV4_IFINDEX_OL RIB nexthop structure. | |
713 | * | |
0a589359 | 714 | * If ZAPI_MESSAGE_DISTANCE is set, the distance value is written as a 1 |
715 | * byte value. | |
716 | * | |
717 | * If ZAPI_MESSAGE_METRIC is set, the metric value is written as an 8 | |
718 | * byte value. | |
719 | * | |
dc9ffce8 | 720 | * If ZAPI_MESSAGE_TAG is set, the tag value is written as a 4 byte value |
0d9551dc | 721 | * |
c50ca33a TT |
722 | * If ZAPI_MESSAGE_MTU is set, the mtu value is written as a 4 byte value |
723 | * | |
0a589359 | 724 | * XXX: No attention paid to alignment. |
725 | */ | |
718e3744 | 726 | int |
0a589359 | 727 | zapi_ipv4_route (u_char cmd, struct zclient *zclient, struct prefix_ipv4 *p, |
728 | struct zapi_ipv4 *api) | |
718e3744 | 729 | { |
730 | int i; | |
731 | int psize; | |
732 | struct stream *s; | |
733 | ||
734 | /* Reset stream. */ | |
735 | s = zclient->obuf; | |
736 | stream_reset (s); | |
7076bb2f | 737 | |
a64448ba DS |
738 | /* Some checks for labeled-unicast. The current expectation is that each |
739 | * nexthop is accompanied by a label in the case of labeled-unicast. | |
740 | */ | |
741 | if (CHECK_FLAG (api->message, ZAPI_MESSAGE_LABEL) && | |
742 | CHECK_FLAG (api->message, ZAPI_MESSAGE_NEXTHOP)) | |
743 | { | |
744 | /* We expect prefixes installed with labels and the number to match | |
745 | * the number of nexthops. | |
746 | */ | |
747 | assert (api->label_num == api->nexthop_num); | |
748 | } | |
749 | ||
7076bb2f | 750 | zclient_create_header (s, cmd, api->vrf_id); |
c1b9800a | 751 | |
752 | /* Put type and nexthop. */ | |
718e3744 | 753 | stream_putc (s, api->type); |
7c8ff89e | 754 | stream_putw (s, api->instance); |
0fc452dc | 755 | stream_putl (s, api->flags); |
718e3744 | 756 | stream_putc (s, api->message); |
5a616c08 | 757 | stream_putw (s, api->safi); |
718e3744 | 758 | |
718e3744 | 759 | /* Put prefix information. */ |
760 | psize = PSIZE (p->prefixlen); | |
761 | stream_putc (s, p->prefixlen); | |
0a589359 | 762 | stream_write (s, (u_char *) & p->prefix, psize); |
718e3744 | 763 | |
764 | /* Nexthop, ifindex, distance and metric information. */ | |
d44ca835 | 765 | if (CHECK_FLAG (api->message, ZAPI_MESSAGE_NEXTHOP)) |
a64448ba | 766 | { |
c8a1cb5c | 767 | /* traditional 32-bit data units */ |
595db7f1 | 768 | if (CHECK_FLAG (api->flags, ZEBRA_FLAG_BLACKHOLE)) |
769 | { | |
770 | stream_putc (s, 1); | |
5b30316e | 771 | stream_putc (s, NEXTHOP_TYPE_BLACKHOLE); |
0a589359 | 772 | /* XXX assert(api->nexthop_num == 0); */ |
773 | /* XXX assert(api->ifindex_num == 0); */ | |
595db7f1 | 774 | } |
775 | else | |
776 | stream_putc (s, api->nexthop_num + api->ifindex_num); | |
718e3744 | 777 | |
778 | for (i = 0; i < api->nexthop_num; i++) | |
595db7f1 | 779 | { |
5b30316e | 780 | stream_putc (s, NEXTHOP_TYPE_IPV4); |
595db7f1 | 781 | stream_put_in_addr (s, api->nexthop[i]); |
a64448ba DS |
782 | /* For labeled-unicast, each nexthop is followed by label. */ |
783 | if (CHECK_FLAG (api->message, ZAPI_MESSAGE_LABEL)) | |
784 | stream_putl (s, api->label[i]); | |
595db7f1 | 785 | } |
718e3744 | 786 | for (i = 0; i < api->ifindex_num; i++) |
595db7f1 | 787 | { |
5b30316e | 788 | stream_putc (s, NEXTHOP_TYPE_IFINDEX); |
595db7f1 | 789 | stream_putl (s, api->ifindex[i]); |
790 | } | |
718e3744 | 791 | } |
792 | ||
793 | if (CHECK_FLAG (api->message, ZAPI_MESSAGE_DISTANCE)) | |
794 | stream_putc (s, api->distance); | |
795 | if (CHECK_FLAG (api->message, ZAPI_MESSAGE_METRIC)) | |
796 | stream_putl (s, api->metric); | |
0d9551dc | 797 | if (CHECK_FLAG (api->message, ZAPI_MESSAGE_TAG)) |
dc9ffce8 | 798 | stream_putl (s, api->tag); |
c50ca33a TT |
799 | if (CHECK_FLAG (api->message, ZAPI_MESSAGE_MTU)) |
800 | stream_putl (s, api->mtu); | |
718e3744 | 801 | |
802 | /* Put length at the first point of the stream. */ | |
803 | stream_putw_at (s, 0, stream_get_endp (s)); | |
804 | ||
634f9ea2 | 805 | return zclient_send_message(zclient); |
718e3744 | 806 | } |
807 | ||
8a92a8a0 DS |
808 | int |
809 | zapi_ipv4_route_ipv6_nexthop (u_char cmd, struct zclient *zclient, | |
810 | struct prefix_ipv4 *p, struct zapi_ipv6 *api) | |
811 | { | |
812 | int i; | |
813 | int psize; | |
814 | struct stream *s; | |
815 | ||
816 | /* Reset stream. */ | |
817 | s = zclient->obuf; | |
818 | stream_reset (s); | |
819 | ||
a64448ba DS |
820 | /* Some checks for labeled-unicast. The current expectation is that each |
821 | * nexthop is accompanied by a label in the case of labeled-unicast. | |
822 | */ | |
823 | if (CHECK_FLAG (api->message, ZAPI_MESSAGE_LABEL) && | |
824 | CHECK_FLAG (api->message, ZAPI_MESSAGE_NEXTHOP)) | |
825 | { | |
826 | /* We expect prefixes installed with labels and the number to match | |
827 | * the number of nexthops. | |
828 | */ | |
829 | assert (api->label_num == api->nexthop_num); | |
830 | } | |
831 | ||
7076bb2f | 832 | zclient_create_header (s, cmd, api->vrf_id); |
8a92a8a0 DS |
833 | |
834 | /* Put type and nexthop. */ | |
835 | stream_putc (s, api->type); | |
836 | stream_putw (s, api->instance); | |
0fc452dc | 837 | stream_putl (s, api->flags); |
8a92a8a0 DS |
838 | stream_putc (s, api->message); |
839 | stream_putw (s, api->safi); | |
840 | ||
841 | /* Put prefix information. */ | |
842 | psize = PSIZE (p->prefixlen); | |
843 | stream_putc (s, p->prefixlen); | |
844 | stream_write (s, (u_char *) & p->prefix, psize); | |
845 | ||
846 | /* Nexthop, ifindex, distance and metric information. */ | |
847 | if (CHECK_FLAG (api->message, ZAPI_MESSAGE_NEXTHOP)) | |
848 | { | |
849 | if (CHECK_FLAG (api->flags, ZEBRA_FLAG_BLACKHOLE)) | |
850 | { | |
851 | stream_putc (s, 1); | |
5b30316e | 852 | stream_putc (s, NEXTHOP_TYPE_BLACKHOLE); |
8a92a8a0 DS |
853 | /* XXX assert(api->nexthop_num == 0); */ |
854 | /* XXX assert(api->ifindex_num == 0); */ | |
855 | } | |
856 | else | |
857 | stream_putc (s, api->nexthop_num + api->ifindex_num); | |
858 | ||
859 | for (i = 0; i < api->nexthop_num; i++) | |
860 | { | |
5b30316e | 861 | stream_putc (s, NEXTHOP_TYPE_IPV6); |
8a92a8a0 | 862 | stream_write (s, (u_char *)api->nexthop[i], 16); |
a64448ba DS |
863 | /* For labeled-unicast, each nexthop is followed by label. */ |
864 | if (CHECK_FLAG (api->message, ZAPI_MESSAGE_LABEL)) | |
865 | stream_putl (s, api->label[i]); | |
8a92a8a0 DS |
866 | } |
867 | for (i = 0; i < api->ifindex_num; i++) | |
868 | { | |
5b30316e | 869 | stream_putc (s, NEXTHOP_TYPE_IFINDEX); |
8a92a8a0 DS |
870 | stream_putl (s, api->ifindex[i]); |
871 | } | |
872 | } | |
873 | ||
874 | if (CHECK_FLAG (api->message, ZAPI_MESSAGE_DISTANCE)) | |
875 | stream_putc (s, api->distance); | |
876 | if (CHECK_FLAG (api->message, ZAPI_MESSAGE_METRIC)) | |
877 | stream_putl (s, api->metric); | |
878 | if (CHECK_FLAG (api->message, ZAPI_MESSAGE_TAG)) | |
dc9ffce8 | 879 | stream_putl (s, api->tag); |
c50ca33a TT |
880 | if (CHECK_FLAG (api->message, ZAPI_MESSAGE_MTU)) |
881 | stream_putl (s, api->mtu); | |
8a92a8a0 DS |
882 | |
883 | /* Put length at the first point of the stream. */ | |
884 | stream_putw_at (s, 0, stream_get_endp (s)); | |
885 | ||
886 | return zclient_send_message(zclient); | |
887 | } | |
888 | ||
718e3744 | 889 | int |
0a589359 | 890 | zapi_ipv6_route (u_char cmd, struct zclient *zclient, struct prefix_ipv6 *p, |
d75f3b00 | 891 | struct prefix_ipv6 *src_p, struct zapi_ipv6 *api) |
718e3744 | 892 | { |
893 | int i; | |
894 | int psize; | |
895 | struct stream *s; | |
896 | ||
d75f3b00 DL |
897 | /* either we have !SRCPFX && src_p == NULL, or SRCPFX && src_p != NULL */ |
898 | assert (!(api->message & ZAPI_MESSAGE_SRCPFX) == !src_p); | |
899 | ||
718e3744 | 900 | /* Reset stream. */ |
901 | s = zclient->obuf; | |
902 | stream_reset (s); | |
903 | ||
a64448ba DS |
904 | /* Some checks for labeled-unicast. The current expectation is that each |
905 | * nexthop is accompanied by a label in the case of labeled-unicast. | |
906 | */ | |
907 | if (CHECK_FLAG (api->message, ZAPI_MESSAGE_LABEL) && | |
908 | CHECK_FLAG (api->message, ZAPI_MESSAGE_NEXTHOP)) | |
909 | { | |
910 | /* We expect prefixes installed with labels and the number to match | |
911 | * the number of nexthops. | |
912 | */ | |
913 | assert (api->label_num == api->nexthop_num); | |
914 | } | |
915 | ||
7076bb2f | 916 | zclient_create_header (s, cmd, api->vrf_id); |
718e3744 | 917 | |
c1b9800a | 918 | /* Put type and nexthop. */ |
718e3744 | 919 | stream_putc (s, api->type); |
7c8ff89e | 920 | stream_putw (s, api->instance); |
0fc452dc | 921 | stream_putl (s, api->flags); |
718e3744 | 922 | stream_putc (s, api->message); |
c7ec179a | 923 | stream_putw (s, api->safi); |
718e3744 | 924 | |
925 | /* Put prefix information. */ | |
926 | psize = PSIZE (p->prefixlen); | |
927 | stream_putc (s, p->prefixlen); | |
928 | stream_write (s, (u_char *)&p->prefix, psize); | |
929 | ||
d75f3b00 DL |
930 | if (CHECK_FLAG (api->message, ZAPI_MESSAGE_SRCPFX)) |
931 | { | |
932 | psize = PSIZE (src_p->prefixlen); | |
933 | stream_putc (s, src_p->prefixlen); | |
934 | stream_write (s, (u_char *)&src_p->prefix, psize); | |
935 | } | |
936 | ||
718e3744 | 937 | /* Nexthop, ifindex, distance and metric information. */ |
938 | if (CHECK_FLAG (api->message, ZAPI_MESSAGE_NEXTHOP)) | |
939 | { | |
c3c0ac83 DS |
940 | if (CHECK_FLAG (api->flags, ZEBRA_FLAG_BLACKHOLE)) |
941 | { | |
942 | stream_putc (s, 1); | |
5b30316e | 943 | stream_putc (s, NEXTHOP_TYPE_BLACKHOLE); |
c3c0ac83 DS |
944 | /* XXX assert(api->nexthop_num == 0); */ |
945 | /* XXX assert(api->ifindex_num == 0); */ | |
946 | } | |
947 | else | |
948 | stream_putc (s, api->nexthop_num + api->ifindex_num); | |
718e3744 | 949 | |
950 | for (i = 0; i < api->nexthop_num; i++) | |
951 | { | |
5b30316e | 952 | stream_putc (s, NEXTHOP_TYPE_IPV6); |
718e3744 | 953 | stream_write (s, (u_char *)api->nexthop[i], 16); |
a64448ba DS |
954 | /* For labeled-unicast, each nexthop is followed by label. */ |
955 | if (CHECK_FLAG (api->message, ZAPI_MESSAGE_LABEL)) | |
956 | stream_putl (s, api->label[i]); | |
718e3744 | 957 | } |
958 | for (i = 0; i < api->ifindex_num; i++) | |
959 | { | |
5b30316e | 960 | stream_putc (s, NEXTHOP_TYPE_IFINDEX); |
718e3744 | 961 | stream_putl (s, api->ifindex[i]); |
962 | } | |
963 | } | |
964 | ||
965 | if (CHECK_FLAG (api->message, ZAPI_MESSAGE_DISTANCE)) | |
966 | stream_putc (s, api->distance); | |
967 | if (CHECK_FLAG (api->message, ZAPI_MESSAGE_METRIC)) | |
968 | stream_putl (s, api->metric); | |
0d9551dc | 969 | if (CHECK_FLAG (api->message, ZAPI_MESSAGE_TAG)) |
dc9ffce8 | 970 | stream_putl (s, api->tag); |
c50ca33a TT |
971 | if (CHECK_FLAG (api->message, ZAPI_MESSAGE_MTU)) |
972 | stream_putl (s, api->mtu); | |
718e3744 | 973 | |
974 | /* Put length at the first point of the stream. */ | |
975 | stream_putw_at (s, 0, stream_get_endp (s)); | |
976 | ||
634f9ea2 | 977 | return zclient_send_message(zclient); |
718e3744 | 978 | } |
718e3744 | 979 | |
0a589359 | 980 | /* |
981 | * send a ZEBRA_REDISTRIBUTE_ADD or ZEBRA_REDISTRIBUTE_DELETE | |
982 | * for the route type (ZEBRA_ROUTE_KERNEL etc.). The zebra server will | |
983 | * then set/unset redist[type] in the client handle (a struct zserv) for the | |
984 | * sending client | |
985 | */ | |
718e3744 | 986 | int |
8bb0831e | 987 | zebra_redistribute_send (int command, struct zclient *zclient, afi_t afi, int type, |
7076bb2f | 988 | u_short instance, vrf_id_t vrf_id) |
718e3744 | 989 | { |
718e3744 | 990 | struct stream *s; |
991 | ||
634f9ea2 | 992 | s = zclient->obuf; |
993 | stream_reset(s); | |
718e3744 | 994 | |
7076bb2f | 995 | zclient_create_header (s, command, vrf_id); |
8bb0831e | 996 | stream_putc (s, afi); |
718e3744 | 997 | stream_putc (s, type); |
7c8ff89e | 998 | stream_putw (s, instance); |
c1b9800a | 999 | |
1000 | stream_putw_at (s, 0, stream_get_endp (s)); | |
1001 | ||
634f9ea2 | 1002 | return zclient_send_message(zclient); |
718e3744 | 1003 | } |
1004 | ||
d9178828 PJ |
1005 | /* Get prefix in ZServ format; family should be filled in on prefix */ |
1006 | static void | |
1007 | zclient_stream_get_prefix (struct stream *s, struct prefix *p) | |
1008 | { | |
1009 | size_t plen = prefix_blen (p); | |
1010 | u_char c; | |
1011 | p->prefixlen = 0; | |
1012 | ||
1013 | if (plen == 0) | |
1014 | return; | |
1015 | ||
1016 | stream_get (&p->u.prefix, s, plen); | |
1017 | c = stream_getc(s); | |
1018 | p->prefixlen = MIN(plen * 8, c); | |
1019 | } | |
1020 | ||
18a6dce6 | 1021 | /* Router-id update from zebra daemon. */ |
1022 | void | |
1023 | zebra_router_id_update_read (struct stream *s, struct prefix *rid) | |
1024 | { | |
18a6dce6 | 1025 | /* Fetch interface address. */ |
1026 | rid->family = stream_getc (s); | |
d9178828 PJ |
1027 | |
1028 | zclient_stream_get_prefix (s, rid); | |
18a6dce6 | 1029 | } |
1030 | ||
718e3744 | 1031 | /* Interface addition from zebra daemon. */ |
0a589359 | 1032 | /* |
1033 | * The format of the message sent with type ZEBRA_INTERFACE_ADD or | |
1034 | * ZEBRA_INTERFACE_DELETE from zebra to the client is: | |
1035 | * 0 1 2 3 | |
1036 | * 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 | 1037 | * +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+ |
1038 | * | ifname | | |
1039 | * | | | |
1040 | * | | | |
1041 | * | | | |
1042 | * | | | |
1043 | * +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+ | |
16f1b9ee OD |
1044 | * | ifindex | |
1045 | * +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+ | |
1046 | * | status | | |
0a589359 | 1047 | * +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+ |
16f1b9ee | 1048 | * | if_flags | |
c77d4546 | 1049 | * | | |
0a589359 | 1050 | * +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+ |
16f1b9ee OD |
1051 | * | metric | |
1052 | * +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+ | |
2d7f0d76 DS |
1053 | * | speed | |
1054 | * +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+ | |
16f1b9ee OD |
1055 | * | ifmtu | |
1056 | * +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+ | |
1057 | * | ifmtu6 | | |
1058 | * +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+ | |
1059 | * | bandwidth | | |
1060 | * +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+ | |
1061 | * | Link Layer Type | | |
0a589359 | 1062 | * +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+ |
16f1b9ee | 1063 | * | Harware Address Length | |
0a589359 | 1064 | * +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+ |
16f1b9ee OD |
1065 | * | Hardware Address if HW lenght different from 0 | |
1066 | * | ... max INTERFACE_HWADDR_MAX | | |
0a589359 | 1067 | * +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+ |
16f1b9ee | 1068 | * | Link_params? | Whether a link-params follows: 1 or 0. |
0a589359 | 1069 | * +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+ |
16f1b9ee OD |
1070 | * | Link_params 0 or 1 INTERFACE_LINK_PARAMS_SIZE sized | |
1071 | * | .... (struct if_link_params). | | |
0a589359 | 1072 | * +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+ |
1073 | */ | |
1074 | ||
2fcc254e | 1075 | static void |
ebe32f70 | 1076 | zclient_vrf_add (struct zclient *zclient, vrf_id_t vrf_id) |
1892f15e DS |
1077 | { |
1078 | struct vrf *vrf; | |
1079 | char vrfname_tmp[VRF_NAMSIZ]; | |
1080 | ||
1081 | /* Read interface name. */ | |
ebe32f70 | 1082 | stream_get (vrfname_tmp, zclient->ibuf, VRF_NAMSIZ); |
1892f15e DS |
1083 | |
1084 | /* Lookup/create vrf by vrf_id. */ | |
1085 | vrf = vrf_get (vrf_id, vrfname_tmp); | |
1086 | ||
2fcc254e | 1087 | vrf_enable (vrf); |
1892f15e DS |
1088 | } |
1089 | ||
2fcc254e | 1090 | static void |
ebe32f70 | 1091 | zclient_vrf_delete (struct zclient *zclient, vrf_id_t vrf_id) |
1892f15e DS |
1092 | { |
1093 | struct vrf *vrf; | |
1094 | ||
1095 | /* Lookup vrf by vrf_id. */ | |
5f3d1bdf | 1096 | vrf = vrf_lookup_by_id (vrf_id); |
1892f15e | 1097 | |
beef1990 DS |
1098 | /* |
1099 | * If a routing protocol doesn't know about a | |
1100 | * vrf that is about to be deleted. There is | |
1101 | * no point in attempting to delete it. | |
1102 | */ | |
1103 | if (!vrf) | |
1104 | return; | |
1105 | ||
2fcc254e | 1106 | vrf_delete (vrf); |
1892f15e DS |
1107 | } |
1108 | ||
718e3744 | 1109 | struct interface * |
7076bb2f | 1110 | zebra_interface_add_read (struct stream *s, vrf_id_t vrf_id) |
718e3744 | 1111 | { |
1112 | struct interface *ifp; | |
02ff83c5 | 1113 | char ifname_tmp[INTERFACE_NAMSIZ]; |
718e3744 | 1114 | |
1115 | /* Read interface name. */ | |
1116 | stream_get (ifname_tmp, s, INTERFACE_NAMSIZ); | |
1117 | ||
a349198f | 1118 | /* Lookup/create interface by name. */ |
07a112a1 DS |
1119 | ifp = if_get_by_name_len (ifname_tmp, |
1120 | strnlen (ifname_tmp, INTERFACE_NAMSIZ), | |
1121 | vrf_id, 0); | |
718e3744 | 1122 | |
51d4ef83 | 1123 | zebra_interface_if_set_value (s, ifp); |
718e3744 | 1124 | |
718e3744 | 1125 | return ifp; |
1126 | } | |
1127 | ||
0a589359 | 1128 | /* |
1129 | * Read interface up/down msg (ZEBRA_INTERFACE_UP/ZEBRA_INTERFACE_DOWN) | |
1130 | * from zebra server. The format of this message is the same as | |
1131 | * that sent for ZEBRA_INTERFACE_ADD/ZEBRA_INTERFACE_DELETE (see | |
1132 | * comments for zebra_interface_add_read), except that no sockaddr_dl | |
1133 | * is sent at the tail of the message. | |
1134 | */ | |
718e3744 | 1135 | struct interface * |
7076bb2f | 1136 | zebra_interface_state_read (struct stream *s, vrf_id_t vrf_id) |
718e3744 | 1137 | { |
1138 | struct interface *ifp; | |
02ff83c5 | 1139 | char ifname_tmp[INTERFACE_NAMSIZ]; |
718e3744 | 1140 | |
1141 | /* Read interface name. */ | |
1142 | stream_get (ifname_tmp, s, INTERFACE_NAMSIZ); | |
1143 | ||
1144 | /* Lookup this by interface index. */ | |
fa787f91 DS |
1145 | ifp = if_lookup_by_name_len (ifname_tmp, |
1146 | strnlen (ifname_tmp, INTERFACE_NAMSIZ), | |
1147 | vrf_id); | |
b4dd5eaa | 1148 | if (ifp == NULL) |
1149 | { | |
1150 | zlog_warn ("INTERFACE_STATE: Cannot find IF %s in VRF %d", | |
1151 | ifname_tmp, vrf_id); | |
1152 | return NULL; | |
1153 | } | |
718e3744 | 1154 | |
51d4ef83 | 1155 | zebra_interface_if_set_value (s, ifp); |
718e3744 | 1156 | |
1157 | return ifp; | |
1158 | } | |
1159 | ||
16f1b9ee OD |
1160 | static void |
1161 | link_params_set_value(struct stream *s, struct if_link_params *iflp) | |
1162 | { | |
1163 | ||
1164 | if (iflp == NULL) | |
1165 | return; | |
1166 | ||
1167 | iflp->lp_status = stream_getl (s); | |
1168 | iflp->te_metric = stream_getl (s); | |
1169 | iflp->max_bw = stream_getf (s); | |
1170 | iflp->max_rsv_bw = stream_getf (s); | |
1171 | uint32_t bwclassnum = stream_getl (s); | |
1172 | { | |
1173 | unsigned int i; | |
1174 | for (i = 0; i < bwclassnum && i < MAX_CLASS_TYPE; i++) | |
1175 | iflp->unrsv_bw[i] = stream_getf (s); | |
1176 | if (i < bwclassnum) | |
1177 | zlog_err ("%s: received %d > %d (MAX_CLASS_TYPE) bw entries" | |
1178 | " - outdated library?", | |
1179 | __func__, bwclassnum, MAX_CLASS_TYPE); | |
1180 | } | |
1181 | iflp->admin_grp = stream_getl (s); | |
1182 | iflp->rmt_as = stream_getl (s); | |
1183 | iflp->rmt_ip.s_addr = stream_get_ipv4 (s); | |
1184 | ||
1185 | iflp->av_delay = stream_getl (s); | |
1186 | iflp->min_delay = stream_getl (s); | |
1187 | iflp->max_delay = stream_getl (s); | |
1188 | iflp->delay_var = stream_getl (s); | |
1189 | ||
1190 | iflp->pkt_loss = stream_getf (s); | |
1191 | iflp->res_bw = stream_getf (s); | |
1192 | iflp->ava_bw = stream_getf (s); | |
1193 | iflp->use_bw = stream_getf (s); | |
1194 | } | |
1195 | ||
1196 | struct interface * | |
1197 | zebra_interface_link_params_read (struct stream *s) | |
1198 | { | |
1199 | struct if_link_params *iflp; | |
c28e5b2a DS |
1200 | ifindex_t ifindex; |
1201 | ||
1202 | assert (s); | |
1203 | ||
1204 | ifindex = stream_getl (s); | |
16f1b9ee | 1205 | |
7e2b7603 | 1206 | struct interface *ifp = if_lookup_by_index (ifindex, VRF_DEFAULT); |
16f1b9ee | 1207 | |
c28e5b2a | 1208 | if (ifp == NULL) |
16f1b9ee OD |
1209 | { |
1210 | zlog_err ("%s: unknown ifindex %u, shouldn't happen", | |
1211 | __func__, ifindex); | |
1212 | return NULL; | |
1213 | } | |
1214 | ||
1215 | if ((iflp = if_link_params_get (ifp)) == NULL) | |
1216 | return NULL; | |
1217 | ||
1218 | link_params_set_value(s, iflp); | |
1219 | ||
1220 | return ifp; | |
1221 | } | |
1222 | ||
1223 | void | |
1224 | zebra_interface_if_set_value (struct stream *s, struct interface *ifp) | |
1225 | { | |
1226 | u_char link_params_status = 0; | |
1227 | ||
1228 | /* Read interface's index. */ | |
1229 | ifp->ifindex = stream_getl (s); | |
1230 | ifp->status = stream_getc (s); | |
1231 | ||
1232 | /* Read interface's value. */ | |
1233 | ifp->flags = stream_getq (s); | |
1234 | ifp->ptm_enable = stream_getc (s); | |
1235 | ifp->ptm_status = stream_getc (s); | |
1236 | ifp->metric = stream_getl (s); | |
2d7f0d76 | 1237 | ifp->speed = stream_getl (s); |
16f1b9ee OD |
1238 | ifp->mtu = stream_getl (s); |
1239 | ifp->mtu6 = stream_getl (s); | |
1240 | ifp->bandwidth = stream_getl (s); | |
1241 | ifp->ll_type = stream_getl (s); | |
1242 | ifp->hw_addr_len = stream_getl (s); | |
1243 | if (ifp->hw_addr_len) | |
1244 | stream_get (ifp->hw_addr, s, MIN(ifp->hw_addr_len, INTERFACE_HWADDR_MAX)); | |
1245 | ||
1246 | /* Read Traffic Engineering status */ | |
1247 | link_params_status = stream_getc (s); | |
1248 | /* Then, Traffic Engineering parameters if any */ | |
1249 | if (link_params_status) | |
1250 | { | |
1251 | struct if_link_params *iflp = if_link_params_get (ifp); | |
1252 | link_params_set_value(s, iflp); | |
1253 | } | |
1254 | } | |
1255 | ||
1256 | size_t | |
1257 | zebra_interface_link_params_write (struct stream *s, struct interface *ifp) | |
1258 | { | |
1259 | size_t w; | |
1260 | struct if_link_params *iflp; | |
1261 | int i; | |
1262 | ||
1263 | if (s == NULL || ifp == NULL || ifp->link_params == NULL) | |
1264 | return 0; | |
1265 | ||
1266 | iflp = ifp->link_params; | |
1267 | w = 0; | |
1268 | ||
1269 | w += stream_putl (s, iflp->lp_status); | |
1270 | ||
1271 | w += stream_putl (s, iflp->te_metric); | |
1272 | w += stream_putf (s, iflp->max_bw); | |
1273 | w += stream_putf (s, iflp->max_rsv_bw); | |
1274 | ||
1275 | w += stream_putl (s, MAX_CLASS_TYPE); | |
1276 | for (i = 0; i < MAX_CLASS_TYPE; i++) | |
1277 | w += stream_putf (s, iflp->unrsv_bw[i]); | |
1278 | ||
1279 | w += stream_putl (s, iflp->admin_grp); | |
1280 | w += stream_putl (s, iflp->rmt_as); | |
1281 | w += stream_put_in_addr (s, &iflp->rmt_ip); | |
1282 | ||
1283 | w += stream_putl (s, iflp->av_delay); | |
1284 | w += stream_putl (s, iflp->min_delay); | |
1285 | w += stream_putl (s, iflp->max_delay); | |
1286 | w += stream_putl (s, iflp->delay_var); | |
1287 | ||
1288 | w += stream_putf (s, iflp->pkt_loss); | |
1289 | w += stream_putf (s, iflp->res_bw); | |
1290 | w += stream_putf (s, iflp->ava_bw); | |
1291 | w += stream_putf (s, iflp->use_bw); | |
1292 | ||
1293 | return w; | |
1294 | } | |
1295 | ||
1296 | /* | |
0a589359 | 1297 | * format of message for address additon is: |
1298 | * 0 | |
1299 | * 0 1 2 3 4 5 6 7 | |
1300 | * +-+-+-+-+-+-+-+-+ | |
1301 | * | type | ZEBRA_INTERFACE_ADDRESS_ADD or | |
1302 | * +-+-+-+-+-+-+-+-+ ZEBRA_INTERFACE_ADDRES_DELETE | |
1303 | * | | | |
1304 | * + + | |
1305 | * | ifindex | | |
1306 | * + + | |
1307 | * | | | |
1308 | * + + | |
1309 | * | | | |
1310 | * +-+-+-+-+-+-+-+-+ | |
1311 | * | ifc_flags | flags for connected address | |
1312 | * +-+-+-+-+-+-+-+-+ | |
1313 | * | addr_family | | |
1314 | * +-+-+-+-+-+-+-+-+ | |
1315 | * | addr... | | |
1316 | * : : | |
1317 | * | | | |
1318 | * +-+-+-+-+-+-+-+-+ | |
1319 | * | addr_len | len of addr. E.g., addr_len = 4 for ipv4 addrs. | |
1320 | * +-+-+-+-+-+-+-+-+ | |
1321 | * | daddr.. | | |
1322 | * : : | |
1323 | * | | | |
1324 | * +-+-+-+-+-+-+-+-+ | |
0a589359 | 1325 | */ |
1326 | ||
3fb9cd6e | 1327 | static int |
1328 | memconstant(const void *s, int c, size_t n) | |
1329 | { | |
1330 | const u_char *p = s; | |
1331 | ||
1332 | while (n-- > 0) | |
1333 | if (*p++ != c) | |
1334 | return 0; | |
1335 | return 1; | |
1336 | } | |
1337 | ||
d5a5c8f0 | 1338 | |
718e3744 | 1339 | struct connected * |
7076bb2f | 1340 | zebra_interface_address_read (int type, struct stream *s, vrf_id_t vrf_id) |
718e3744 | 1341 | { |
b892f1dd | 1342 | ifindex_t ifindex; |
718e3744 | 1343 | struct interface *ifp; |
1344 | struct connected *ifc; | |
d9178828 | 1345 | struct prefix p, d, *dp; |
718e3744 | 1346 | int plen; |
0a589359 | 1347 | u_char ifc_flags; |
718e3744 | 1348 | |
0a589359 | 1349 | memset (&p, 0, sizeof(p)); |
1350 | memset (&d, 0, sizeof(d)); | |
718e3744 | 1351 | |
1352 | /* Get interface index. */ | |
1353 | ifindex = stream_getl (s); | |
1354 | ||
1355 | /* Lookup index. */ | |
7e2b7603 | 1356 | ifp = if_lookup_by_index (ifindex, vrf_id); |
718e3744 | 1357 | if (ifp == NULL) |
1358 | { | |
b4dd5eaa | 1359 | zlog_warn ("INTERFACE_ADDRESS_%s: Cannot find IF %u in VRF %d", |
1360 | (type == ZEBRA_INTERFACE_ADDRESS_ADD) ? "ADD" : "DEL", | |
1361 | ifindex, vrf_id); | |
718e3744 | 1362 | return NULL; |
1363 | } | |
1364 | ||
1365 | /* Fetch flag. */ | |
0a589359 | 1366 | ifc_flags = stream_getc (s); |
718e3744 | 1367 | |
1368 | /* Fetch interface address. */ | |
d9178828 PJ |
1369 | d.family = p.family = stream_getc (s); |
1370 | plen = prefix_blen (&d); | |
1371 | ||
1372 | zclient_stream_get_prefix (s, &p); | |
718e3744 | 1373 | |
1374 | /* Fetch destination address. */ | |
0a589359 | 1375 | stream_get (&d.u.prefix, s, plen); |
d9178828 PJ |
1376 | |
1377 | /* N.B. NULL destination pointers are encoded as all zeroes */ | |
1378 | dp = memconstant(&d.u.prefix,0,plen) ? NULL : &d; | |
1379 | ||
0a589359 | 1380 | if (type == ZEBRA_INTERFACE_ADDRESS_ADD) |
1381 | { | |
38485402 DS |
1382 | ifc = connected_lookup_prefix_exact (ifp, &p); |
1383 | if (!ifc) | |
1384 | { | |
1385 | /* N.B. NULL destination pointers are encoded as all zeroes */ | |
d9178828 | 1386 | ifc = connected_add_by_prefix(ifp, &p, dp); |
38485402 DS |
1387 | } |
1388 | if (ifc) | |
e4529636 AS |
1389 | { |
1390 | ifc->flags = ifc_flags; | |
1391 | if (ifc->destination) | |
1392 | ifc->destination->prefixlen = ifc->address->prefixlen; | |
90444ca3 DL |
1393 | else if (CHECK_FLAG(ifc->flags, ZEBRA_IFA_PEER)) |
1394 | { | |
1395 | /* carp interfaces on OpenBSD with 0.0.0.0/0 as "peer" */ | |
855110bb | 1396 | char buf[PREFIX_STRLEN]; |
90444ca3 DL |
1397 | zlog_warn("warning: interface %s address %s " |
1398 | "with peer flag set, but no peer address!", | |
855110bb TT |
1399 | ifp->name, |
1400 | prefix2str (ifc->address, buf, sizeof buf)); | |
90444ca3 DL |
1401 | UNSET_FLAG(ifc->flags, ZEBRA_IFA_PEER); |
1402 | } | |
e4529636 | 1403 | } |
0a589359 | 1404 | } |
1405 | else | |
1406 | { | |
1407 | assert (type == ZEBRA_INTERFACE_ADDRESS_DELETE); | |
1408 | ifc = connected_delete_by_prefix(ifp, &p); | |
1409 | } | |
718e3744 | 1410 | |
1411 | return ifc; | |
1412 | } | |
0a589359 | 1413 | |
a80beece DS |
1414 | /* |
1415 | * format of message for neighbor connected address is: | |
1416 | * 0 | |
1417 | * 0 1 2 3 4 5 6 7 | |
1418 | * +-+-+-+-+-+-+-+-+ | |
1419 | * | type | ZEBRA_INTERFACE_NBR_ADDRESS_ADD or | |
1420 | * +-+-+-+-+-+-+-+-+ ZEBRA_INTERFACE_NBR_ADDRES_DELETE | |
1421 | * | | | |
1422 | * + + | |
1423 | * | ifindex | | |
1424 | * + + | |
1425 | * | | | |
1426 | * + + | |
1427 | * | | | |
1428 | * +-+-+-+-+-+-+-+-+ | |
1429 | * | addr_family | | |
1430 | * +-+-+-+-+-+-+-+-+ | |
1431 | * | addr... | | |
1432 | * : : | |
1433 | * | | | |
1434 | * +-+-+-+-+-+-+-+-+ | |
1435 | * | addr_len | len of addr. | |
1436 | * +-+-+-+-+-+-+-+-+ | |
1437 | */ | |
1438 | struct nbr_connected * | |
7076bb2f | 1439 | zebra_interface_nbr_address_read (int type, struct stream *s, vrf_id_t vrf_id) |
a80beece DS |
1440 | { |
1441 | unsigned int ifindex; | |
1442 | struct interface *ifp; | |
1443 | struct prefix p; | |
1444 | struct nbr_connected *ifc; | |
1445 | ||
1446 | /* Get interface index. */ | |
1447 | ifindex = stream_getl (s); | |
1448 | ||
1449 | /* Lookup index. */ | |
7e2b7603 | 1450 | ifp = if_lookup_by_index (ifindex, vrf_id); |
a80beece DS |
1451 | if (ifp == NULL) |
1452 | { | |
f1aa3df6 | 1453 | zlog_warn ("INTERFACE_NBR_%s: Cannot find IF %u in VRF %d", |
1454 | (type == ZEBRA_INTERFACE_NBR_ADDRESS_ADD) ? "ADD" : "DELETE", | |
1455 | ifindex, vrf_id); | |
a80beece DS |
1456 | return NULL; |
1457 | } | |
1458 | ||
1459 | p.family = stream_getc (s); | |
1460 | stream_get (&p.u.prefix, s, prefix_blen (&p)); | |
1461 | p.prefixlen = stream_getc (s); | |
1462 | ||
1463 | if (type == ZEBRA_INTERFACE_NBR_ADDRESS_ADD) | |
1464 | { | |
1465 | /* Currently only supporting P2P links, so any new RA source address is | |
1466 | considered as the replacement of the previously learnt Link-Local address. */ | |
1467 | if (!(ifc = listnode_head(ifp->nbr_connected))) | |
1468 | { | |
1469 | ifc = nbr_connected_new (); | |
1470 | ifc->address = prefix_new (); | |
1471 | ifc->ifp = ifp; | |
1472 | listnode_add (ifp->nbr_connected, ifc); | |
1473 | } | |
1474 | ||
1475 | prefix_copy(ifc->address, &p); | |
1476 | } | |
1477 | else | |
1478 | { | |
1479 | assert (type == ZEBRA_INTERFACE_NBR_ADDRESS_DELETE); | |
1480 | ||
1481 | ifc = nbr_connected_check(ifp, &p); | |
1482 | if (ifc) | |
1483 | listnode_delete (ifp->nbr_connected, ifc); | |
1484 | } | |
1485 | ||
1486 | return ifc; | |
1487 | } | |
6b0655a2 | 1488 | |
c8e264b6 | 1489 | struct interface * |
1490 | zebra_interface_vrf_update_read (struct stream *s, vrf_id_t vrf_id, | |
1491 | vrf_id_t *new_vrf_id) | |
1492 | { | |
1493 | unsigned int ifindex; | |
1494 | struct interface *ifp; | |
1495 | vrf_id_t new_id = VRF_DEFAULT; | |
1496 | ||
1497 | /* Get interface index. */ | |
1498 | ifindex = stream_getl (s); | |
1499 | ||
1500 | /* Lookup interface. */ | |
7e2b7603 | 1501 | ifp = if_lookup_by_index (ifindex, vrf_id); |
c8e264b6 | 1502 | if (ifp == NULL) |
1503 | { | |
1504 | zlog_warn ("INTERFACE_VRF_UPDATE: Cannot find IF %u in VRF %d", | |
1505 | ifindex, vrf_id); | |
1506 | return NULL; | |
1507 | } | |
1508 | ||
1509 | /* Fetch new VRF Id. */ | |
1510 | new_id = stream_getw (s); | |
1511 | ||
1512 | *new_vrf_id = new_id; | |
1513 | return ifp; | |
1514 | } | |
5c7ef8dc | 1515 | |
1516 | /* filter unwanted messages until the expected one arrives */ | |
1517 | static int | |
1518 | zclient_read_sync_response (struct zclient *zclient, u_int16_t expected_cmd) | |
1519 | { | |
1520 | struct stream *s; | |
1521 | u_int16_t size; | |
1522 | u_char marker; | |
1523 | u_char version; | |
1524 | vrf_id_t vrf_id; | |
1525 | u_int16_t cmd; | |
1526 | fd_set readfds; | |
1527 | int ret; | |
1528 | ||
1529 | ret = 0; | |
1530 | cmd = expected_cmd + 1; | |
1531 | while (ret == 0 && cmd != expected_cmd) | |
1532 | { | |
1533 | s = zclient->ibuf; | |
1534 | stream_reset (s); | |
1535 | ||
1536 | /* wait until response arrives */ | |
1537 | FD_ZERO (&readfds); | |
1538 | FD_SET (zclient->sock, &readfds); | |
1539 | select (zclient->sock+1, &readfds, NULL, NULL, NULL); | |
1540 | if (!FD_ISSET(zclient->sock, &readfds)) | |
1541 | continue; | |
1542 | /* read response */ | |
1543 | ret = zclient_read_header (s, zclient->sock, &size, &marker, &version, | |
1544 | &vrf_id, &cmd); | |
1545 | if (zclient_debug) | |
1546 | zlog_debug ("%s: Response (%d bytes) received", __func__, size); | |
1547 | } | |
1548 | if (ret != 0) | |
1549 | { | |
1550 | zlog_err ("%s: Invalid Sync Message Reply", __func__); | |
1551 | return -1; | |
1552 | } | |
1553 | ||
1554 | return 0; | |
1555 | } | |
fea12efb | 1556 | /** |
1557 | * Connect to label manager in a syncronous way | |
1558 | * | |
1559 | * It first writes the request to zcient output buffer and then | |
1560 | * immediately reads the answer from the input buffer. | |
1561 | * | |
1562 | * @param zclient Zclient used to connect to label manager (zebra) | |
1563 | * @result Result of response | |
1564 | */ | |
1565 | int | |
1566 | lm_label_manager_connect (struct zclient *zclient) | |
1567 | { | |
1568 | int ret; | |
1569 | struct stream *s; | |
1570 | u_char result; | |
fea12efb | 1571 | |
08c08a35 DS |
1572 | if (zclient_debug) |
1573 | zlog_debug ("Connecting to Label Manager"); | |
1574 | ||
fea12efb | 1575 | if (zclient->sock < 0) |
1576 | return -1; | |
1577 | ||
1578 | /* send request */ | |
1579 | s = zclient->obuf; | |
1580 | stream_reset (s); | |
1581 | zclient_create_header (s, ZEBRA_LABEL_MANAGER_CONNECT, VRF_DEFAULT); | |
1582 | ||
1583 | /* proto */ | |
1584 | stream_putc (s, zclient->redist_default); | |
1585 | /* instance */ | |
1586 | stream_putw (s, zclient->instance); | |
1587 | ||
1588 | /* Put length at the first point of the stream. */ | |
1589 | stream_putw_at(s, 0, stream_get_endp(s)); | |
1590 | ||
1591 | ret = writen (zclient->sock, s->data, stream_get_endp (s)); | |
1592 | if (ret < 0) | |
1593 | { | |
1594 | zlog_err ("%s: can't write to zclient->sock", __func__); | |
1595 | close (zclient->sock); | |
1596 | zclient->sock = -1; | |
1597 | return -1; | |
1598 | } | |
1599 | if (ret == 0) | |
1600 | { | |
1601 | zlog_err ("%s: zclient->sock connection closed", __func__); | |
1602 | close (zclient->sock); | |
1603 | zclient->sock = -1; | |
1604 | return -1; | |
1605 | } | |
08c08a35 DS |
1606 | if (zclient_debug) |
1607 | zlog_debug ("%s: Label manager connect request (%d bytes) sent", __func__, ret); | |
fea12efb | 1608 | |
1609 | /* read response */ | |
5c7ef8dc | 1610 | if (zclient_read_sync_response (zclient, ZEBRA_LABEL_MANAGER_CONNECT) != 0) |
1611 | return -1; | |
fea12efb | 1612 | |
fea12efb | 1613 | /* result */ |
5c7ef8dc | 1614 | s = zclient->ibuf; |
fea12efb | 1615 | result = stream_getc(s); |
08c08a35 | 1616 | if (zclient_debug) |
5c7ef8dc | 1617 | zlog_debug ("%s: Label Manager connect response received, result %u", |
1618 | __func__, result); | |
fea12efb | 1619 | |
1620 | return (int)result; | |
1621 | } | |
1622 | ||
1623 | /** | |
1624 | * Function to request a label chunk in a syncronous way | |
1625 | * | |
1626 | * It first writes the request to zlcient output buffer and then | |
1627 | * immediately reads the answer from the input buffer. | |
1628 | * | |
1629 | * @param zclient Zclient used to connect to label manager (zebra) | |
1630 | * @param keep Avoid garbage collection | |
1631 | * @param chunk_size Amount of labels requested | |
1632 | * @param start To write first assigned chunk label to | |
1633 | * @param end To write last assigned chunk label to | |
1634 | * @result 0 on success, -1 otherwise | |
1635 | */ | |
1636 | int | |
1637 | lm_get_label_chunk (struct zclient *zclient, u_char keep, uint32_t chunk_size, | |
1638 | uint32_t *start, uint32_t *end) | |
1639 | { | |
1640 | int ret; | |
1641 | struct stream *s; | |
fea12efb | 1642 | u_char response_keep; |
1643 | ||
08c08a35 DS |
1644 | if (zclient_debug) |
1645 | zlog_debug ("Getting Label Chunk"); | |
1646 | ||
fea12efb | 1647 | if (zclient->sock < 0) |
1648 | return -1; | |
1649 | ||
1650 | /* send request */ | |
1651 | s = zclient->obuf; | |
1652 | stream_reset (s); | |
1653 | zclient_create_header (s, ZEBRA_GET_LABEL_CHUNK, VRF_DEFAULT); | |
1654 | /* keep */ | |
1655 | stream_putc (s, keep); | |
1656 | /* chunk size */ | |
1657 | stream_putl (s, chunk_size); | |
1658 | /* Put length at the first point of the stream. */ | |
1659 | stream_putw_at(s, 0, stream_get_endp(s)); | |
1660 | ||
1661 | ret = writen (zclient->sock, s->data, stream_get_endp (s)); | |
1662 | if (ret < 0) | |
1663 | { | |
1664 | zlog_err ("%s: can't write to zclient->sock", __func__); | |
1665 | close (zclient->sock); | |
1666 | zclient->sock = -1; | |
1667 | return -1; | |
1668 | } | |
1669 | if (ret == 0) | |
1670 | { | |
1671 | zlog_err ("%s: zclient->sock connection closed", __func__); | |
1672 | close (zclient->sock); | |
1673 | zclient->sock = -1; | |
1674 | return -1; | |
1675 | } | |
08c08a35 DS |
1676 | if (zclient_debug) |
1677 | zlog_debug ("%s: Label chunk request (%d bytes) sent", __func__, ret); | |
fea12efb | 1678 | |
1679 | /* read response */ | |
5c7ef8dc | 1680 | if (zclient_read_sync_response (zclient, ZEBRA_GET_LABEL_CHUNK) != 0) |
1681 | return -1; | |
08c08a35 | 1682 | |
5c7ef8dc | 1683 | s = zclient->ibuf; |
fea12efb | 1684 | /* keep */ |
1685 | response_keep = stream_getc(s); | |
1686 | /* start and end labels */ | |
1687 | *start = stream_getl(s); | |
1688 | *end = stream_getl(s); | |
1689 | ||
1690 | /* not owning this response */ | |
5c7ef8dc | 1691 | if (keep != response_keep) |
1692 | { | |
1693 | zlog_err ("%s: Invalid Label chunk: %u - %u, keeps mismatch %u != %u", | |
1694 | __func__, *start, *end, keep, response_keep); | |
1695 | } | |
fea12efb | 1696 | /* sanity */ |
1697 | if (*start > *end | |
1698 | || *start < MPLS_MIN_UNRESERVED_LABEL | |
5c7ef8dc | 1699 | || *end > MPLS_MAX_UNRESERVED_LABEL) |
1700 | { | |
1701 | zlog_err ("%s: Invalid Label chunk: %u - %u", __func__, | |
1702 | *start, *end); | |
1703 | return -1; | |
1704 | } | |
fea12efb | 1705 | |
08c08a35 DS |
1706 | if (zclient_debug) |
1707 | zlog_debug ("Label Chunk assign: %u - %u (%u) ", | |
1708 | *start, *end, response_keep); | |
fea12efb | 1709 | |
1710 | return 0; | |
1711 | } | |
1712 | ||
1713 | /** | |
1714 | * Function to release a label chunk | |
1715 | * | |
1716 | * @param zclient Zclient used to connect to label manager (zebra) | |
1717 | * @param start First label of chunk | |
1718 | * @param end Last label of chunk | |
1719 | * @result 0 on success, -1 otherwise | |
1720 | */ | |
1721 | int | |
1722 | lm_release_label_chunk (struct zclient *zclient, uint32_t start, uint32_t end) | |
1723 | { | |
1724 | int ret; | |
1725 | struct stream *s; | |
1726 | ||
08c08a35 DS |
1727 | if (zclient_debug) |
1728 | zlog_debug ("Releasing Label Chunk"); | |
1729 | ||
fea12efb | 1730 | if (zclient->sock < 0) |
1731 | return -1; | |
1732 | ||
1733 | /* send request */ | |
1734 | s = zclient->obuf; | |
1735 | stream_reset (s); | |
1736 | zclient_create_header (s, ZEBRA_RELEASE_LABEL_CHUNK, VRF_DEFAULT); | |
1737 | ||
1738 | /* start */ | |
1739 | stream_putl (s, start); | |
1740 | /* end */ | |
1741 | stream_putl (s, end); | |
1742 | ||
1743 | /* Put length at the first point of the stream. */ | |
1744 | stream_putw_at(s, 0, stream_get_endp(s)); | |
1745 | ||
1746 | ret = writen (zclient->sock, s->data, stream_get_endp (s)); | |
1747 | if (ret < 0) | |
1748 | { | |
1749 | zlog_err ("%s: can't write to zclient->sock", __func__); | |
1750 | close (zclient->sock); | |
1751 | zclient->sock = -1; | |
1752 | return -1; | |
1753 | } | |
1754 | if (ret == 0) | |
1755 | { | |
1756 | zlog_err ("%s: zclient->sock connection closed", __func__); | |
1757 | close (zclient->sock); | |
1758 | zclient->sock = -1; | |
1759 | return -1; | |
1760 | } | |
1761 | ||
1762 | return 0; | |
1763 | } | |
c8e264b6 | 1764 | |
718e3744 | 1765 | /* Zebra client message read function. */ |
634f9ea2 | 1766 | static int |
718e3744 | 1767 | zclient_read (struct thread *thread) |
1768 | { | |
634f9ea2 | 1769 | size_t already; |
c1b9800a | 1770 | uint16_t length, command; |
1771 | uint8_t marker, version; | |
7076bb2f | 1772 | vrf_id_t vrf_id; |
718e3744 | 1773 | struct zclient *zclient; |
1774 | ||
1775 | /* Get socket to zebra. */ | |
718e3744 | 1776 | zclient = THREAD_ARG (thread); |
1777 | zclient->t_read = NULL; | |
1778 | ||
634f9ea2 | 1779 | /* Read zebra header (if we don't have it already). */ |
1780 | if ((already = stream_get_endp(zclient->ibuf)) < ZEBRA_HEADER_SIZE) | |
718e3744 | 1781 | { |
634f9ea2 | 1782 | ssize_t nbyte; |
1783 | if (((nbyte = stream_read_try(zclient->ibuf, zclient->sock, | |
1784 | ZEBRA_HEADER_SIZE-already)) == 0) || | |
1785 | (nbyte == -1)) | |
1786 | { | |
1787 | if (zclient_debug) | |
1788 | zlog_debug ("zclient connection closed socket [%d].", zclient->sock); | |
1789 | return zclient_failed(zclient); | |
1790 | } | |
1791 | if (nbyte != (ssize_t)(ZEBRA_HEADER_SIZE-already)) | |
1792 | { | |
1793 | /* Try again later. */ | |
1794 | zclient_event (ZCLIENT_READ, zclient); | |
1795 | return 0; | |
1796 | } | |
1797 | already = ZEBRA_HEADER_SIZE; | |
718e3744 | 1798 | } |
1799 | ||
634f9ea2 | 1800 | /* Reset to read from the beginning of the incoming packet. */ |
1801 | stream_set_getp(zclient->ibuf, 0); | |
718e3744 | 1802 | |
c1b9800a | 1803 | /* Fetch header values. */ |
718e3744 | 1804 | length = stream_getw (zclient->ibuf); |
c1b9800a | 1805 | marker = stream_getc (zclient->ibuf); |
1806 | version = stream_getc (zclient->ibuf); | |
7076bb2f | 1807 | vrf_id = stream_getw (zclient->ibuf); |
c1b9800a | 1808 | command = stream_getw (zclient->ibuf); |
1809 | ||
1810 | if (marker != ZEBRA_HEADER_MARKER || version != ZSERV_VERSION) | |
1811 | { | |
1812 | zlog_err("%s: socket %d version mismatch, marker %d, version %d", | |
1813 | __func__, zclient->sock, marker, version); | |
1814 | return zclient_failed(zclient); | |
1815 | } | |
1816 | ||
634f9ea2 | 1817 | if (length < ZEBRA_HEADER_SIZE) |
1818 | { | |
1819 | zlog_err("%s: socket %d message length %u is less than %d ", | |
1820 | __func__, zclient->sock, length, ZEBRA_HEADER_SIZE); | |
1821 | return zclient_failed(zclient); | |
1822 | } | |
1823 | ||
718e3744 | 1824 | /* Length check. */ |
634f9ea2 | 1825 | if (length > STREAM_SIZE(zclient->ibuf)) |
718e3744 | 1826 | { |
634f9ea2 | 1827 | struct stream *ns; |
1828 | zlog_warn("%s: message size %u exceeds buffer size %lu, expanding...", | |
1829 | __func__, length, (u_long)STREAM_SIZE(zclient->ibuf)); | |
1830 | ns = stream_new(length); | |
1831 | stream_copy(ns, zclient->ibuf); | |
718e3744 | 1832 | stream_free (zclient->ibuf); |
634f9ea2 | 1833 | zclient->ibuf = ns; |
718e3744 | 1834 | } |
718e3744 | 1835 | |
1836 | /* Read rest of zebra packet. */ | |
634f9ea2 | 1837 | if (already < length) |
1838 | { | |
1839 | ssize_t nbyte; | |
1840 | if (((nbyte = stream_read_try(zclient->ibuf, zclient->sock, | |
1841 | length-already)) == 0) || | |
1842 | (nbyte == -1)) | |
1843 | { | |
1844 | if (zclient_debug) | |
1845 | zlog_debug("zclient connection closed socket [%d].", zclient->sock); | |
1846 | return zclient_failed(zclient); | |
1847 | } | |
1848 | if (nbyte != (ssize_t)(length-already)) | |
1849 | { | |
1850 | /* Try again later. */ | |
1851 | zclient_event (ZCLIENT_READ, zclient); | |
1852 | return 0; | |
1853 | } | |
1854 | } | |
1855 | ||
1856 | length -= ZEBRA_HEADER_SIZE; | |
718e3744 | 1857 | |
0a589359 | 1858 | if (zclient_debug) |
7076bb2f | 1859 | zlog_debug("zclient 0x%p command 0x%x VRF %u\n", (void *)zclient, command, vrf_id); |
0a589359 | 1860 | |
718e3744 | 1861 | switch (command) |
1862 | { | |
18a6dce6 | 1863 | case ZEBRA_ROUTER_ID_UPDATE: |
1864 | if (zclient->router_id_update) | |
7076bb2f | 1865 | (*zclient->router_id_update) (command, zclient, length, vrf_id); |
18a6dce6 | 1866 | break; |
1892f15e | 1867 | case ZEBRA_VRF_ADD: |
ebe32f70 | 1868 | zclient_vrf_add (zclient, vrf_id); |
1892f15e DS |
1869 | break; |
1870 | case ZEBRA_VRF_DELETE: | |
ebe32f70 | 1871 | zclient_vrf_delete (zclient, vrf_id); |
1892f15e | 1872 | break; |
718e3744 | 1873 | case ZEBRA_INTERFACE_ADD: |
1874 | if (zclient->interface_add) | |
7076bb2f | 1875 | (*zclient->interface_add) (command, zclient, length, vrf_id); |
718e3744 | 1876 | break; |
1877 | case ZEBRA_INTERFACE_DELETE: | |
1878 | if (zclient->interface_delete) | |
7076bb2f | 1879 | (*zclient->interface_delete) (command, zclient, length, vrf_id); |
718e3744 | 1880 | break; |
1881 | case ZEBRA_INTERFACE_ADDRESS_ADD: | |
1882 | if (zclient->interface_address_add) | |
7076bb2f | 1883 | (*zclient->interface_address_add) (command, zclient, length, vrf_id); |
718e3744 | 1884 | break; |
1885 | case ZEBRA_INTERFACE_ADDRESS_DELETE: | |
1886 | if (zclient->interface_address_delete) | |
7076bb2f | 1887 | (*zclient->interface_address_delete) (command, zclient, length, vrf_id); |
718e3744 | 1888 | break; |
68fe91d6 | 1889 | case ZEBRA_INTERFACE_BFD_DEST_UPDATE: |
1890 | if (zclient->interface_bfd_dest_update) | |
7076bb2f | 1891 | (*zclient->interface_bfd_dest_update) (command, zclient, length, vrf_id); |
d5a5c8f0 | 1892 | break; |
a80beece DS |
1893 | case ZEBRA_INTERFACE_NBR_ADDRESS_ADD: |
1894 | if (zclient->interface_nbr_address_add) | |
7076bb2f | 1895 | (*zclient->interface_nbr_address_add) (command, zclient, length, vrf_id); |
a80beece DS |
1896 | break; |
1897 | case ZEBRA_INTERFACE_NBR_ADDRESS_DELETE: | |
1898 | if (zclient->interface_nbr_address_delete) | |
7076bb2f | 1899 | (*zclient->interface_nbr_address_delete) (command, zclient, length, vrf_id); |
a80beece | 1900 | break; |
718e3744 | 1901 | case ZEBRA_INTERFACE_UP: |
1902 | if (zclient->interface_up) | |
7076bb2f | 1903 | (*zclient->interface_up) (command, zclient, length, vrf_id); |
718e3744 | 1904 | break; |
1905 | case ZEBRA_INTERFACE_DOWN: | |
1906 | if (zclient->interface_down) | |
7076bb2f | 1907 | (*zclient->interface_down) (command, zclient, length, vrf_id); |
c8e264b6 | 1908 | break; |
1909 | case ZEBRA_INTERFACE_VRF_UPDATE: | |
1910 | if (zclient->interface_vrf_update) | |
1911 | (*zclient->interface_vrf_update) (command, zclient, length, vrf_id); | |
718e3744 | 1912 | break; |
fb018d25 DS |
1913 | case ZEBRA_NEXTHOP_UPDATE: |
1914 | if (zclient_debug) | |
1915 | zlog_debug("zclient rcvd nexthop update\n"); | |
1916 | if (zclient->nexthop_update) | |
7076bb2f | 1917 | (*zclient->nexthop_update) (command, zclient, length, vrf_id); |
fb018d25 | 1918 | break; |
078430f6 DS |
1919 | case ZEBRA_IMPORT_CHECK_UPDATE: |
1920 | if (zclient_debug) | |
1921 | zlog_debug("zclient rcvd import check update\n"); | |
1922 | if (zclient->import_check_update) | |
7076bb2f | 1923 | (*zclient->import_check_update) (command, zclient, length, vrf_id); |
078430f6 | 1924 | break; |
c43ed2e4 DS |
1925 | case ZEBRA_BFD_DEST_REPLAY: |
1926 | if (zclient->bfd_dest_replay) | |
7076bb2f | 1927 | (*zclient->bfd_dest_replay) (command, zclient, length, vrf_id); |
c43ed2e4 | 1928 | break; |
5048fe14 | 1929 | case ZEBRA_REDISTRIBUTE_IPV4_ADD: |
1930 | if (zclient->redistribute_route_ipv4_add) | |
7076bb2f | 1931 | (*zclient->redistribute_route_ipv4_add) (command, zclient, length, vrf_id); |
5048fe14 | 1932 | break; |
1933 | case ZEBRA_REDISTRIBUTE_IPV4_DEL: | |
1934 | if (zclient->redistribute_route_ipv4_del) | |
7076bb2f | 1935 | (*zclient->redistribute_route_ipv4_del) (command, zclient, length, vrf_id); |
5048fe14 | 1936 | break; |
1937 | case ZEBRA_REDISTRIBUTE_IPV6_ADD: | |
1938 | if (zclient->redistribute_route_ipv6_add) | |
7076bb2f | 1939 | (*zclient->redistribute_route_ipv6_add) (command, zclient, length, vrf_id); |
5048fe14 | 1940 | break; |
1941 | case ZEBRA_REDISTRIBUTE_IPV6_DEL: | |
1942 | if (zclient->redistribute_route_ipv6_del) | |
7076bb2f | 1943 | (*zclient->redistribute_route_ipv6_del) (command, zclient, length, vrf_id); |
5cd459e8 | 1944 | break; |
16f1b9ee OD |
1945 | case ZEBRA_INTERFACE_LINK_PARAMS: |
1946 | if (zclient->interface_link_params) | |
1947 | (*zclient->interface_link_params) (command, zclient, length); | |
5048fe14 | 1948 | break; |
5aba114a DS |
1949 | case ZEBRA_FEC_UPDATE: |
1950 | if (zclient_debug) | |
1951 | zlog_debug("zclient rcvd fec update\n"); | |
1952 | if (zclient->fec_update) | |
1953 | (*zclient->fec_update) (command, zclient, length); | |
1954 | break; | |
718e3744 | 1955 | default: |
1956 | break; | |
1957 | } | |
1958 | ||
634f9ea2 | 1959 | if (zclient->sock < 0) |
1960 | /* Connection was closed during packet processing. */ | |
1961 | return -1; | |
1962 | ||
718e3744 | 1963 | /* Register read thread. */ |
634f9ea2 | 1964 | stream_reset(zclient->ibuf); |
718e3744 | 1965 | zclient_event (ZCLIENT_READ, zclient); |
1966 | ||
1967 | return 0; | |
1968 | } | |
1969 | ||
1970 | void | |
8bb0831e | 1971 | zclient_redistribute (int command, struct zclient *zclient, afi_t afi, int type, |
7076bb2f | 1972 | u_short instance, vrf_id_t vrf_id) |
718e3744 | 1973 | { |
718e3744 | 1974 | |
7076bb2f FL |
1975 | if (instance) { |
1976 | if (command == ZEBRA_REDISTRIBUTE_ADD) | |
1977 | { | |
1978 | if (redist_check_instance(&zclient->mi_redist[afi][type], instance)) | |
1979 | return; | |
1980 | redist_add_instance(&zclient->mi_redist[afi][type], instance); | |
1981 | } | |
1982 | else | |
1983 | { | |
1984 | if (!redist_check_instance(&zclient->mi_redist[afi][type], instance)) | |
1985 | return; | |
1986 | redist_del_instance(&zclient->mi_redist[afi][type], instance); | |
1987 | } | |
1988 | ||
1989 | } else { | |
1990 | if (command == ZEBRA_REDISTRIBUTE_ADD) | |
1991 | { | |
1992 | if (vrf_bitmap_check (zclient->redist[afi][type], vrf_id)) | |
1993 | return; | |
1994 | vrf_bitmap_set (zclient->redist[afi][type], vrf_id); | |
1995 | } | |
1996 | else | |
1997 | { | |
1998 | if (!vrf_bitmap_check (zclient->redist[afi][type], vrf_id)) | |
1999 | return; | |
2000 | vrf_bitmap_unset (zclient->redist[afi][type], vrf_id); | |
2001 | } | |
2002 | } | |
718e3744 | 2003 | |
2004 | if (zclient->sock > 0) | |
7076bb2f | 2005 | zebra_redistribute_send (command, zclient, afi, type, instance, vrf_id); |
718e3744 | 2006 | } |
2007 | ||
718e3744 | 2008 | |
2009 | void | |
7076bb2f FL |
2010 | zclient_redistribute_default (int command, struct zclient *zclient, |
2011 | vrf_id_t vrf_id) | |
718e3744 | 2012 | { |
718e3744 | 2013 | |
0a589359 | 2014 | if (command == ZEBRA_REDISTRIBUTE_DEFAULT_ADD) |
2015 | { | |
7076bb2f | 2016 | if (vrf_bitmap_check (zclient->default_information, vrf_id)) |
0a589359 | 2017 | return; |
7076bb2f | 2018 | vrf_bitmap_set (zclient->default_information, vrf_id); |
0a589359 | 2019 | } |
2020 | else | |
2021 | { | |
7076bb2f | 2022 | if (!vrf_bitmap_check (zclient->default_information, vrf_id)) |
0a589359 | 2023 | return; |
7076bb2f | 2024 | vrf_bitmap_unset (zclient->default_information, vrf_id); |
0a589359 | 2025 | } |
718e3744 | 2026 | |
2027 | if (zclient->sock > 0) | |
7076bb2f | 2028 | zebra_message_send (zclient, command, vrf_id); |
718e3744 | 2029 | } |
2030 | ||
718e3744 | 2031 | static void |
2032 | zclient_event (enum event event, struct zclient *zclient) | |
2033 | { | |
2034 | switch (event) | |
2035 | { | |
2036 | case ZCLIENT_SCHEDULE: | |
ffa2c898 QY |
2037 | thread_add_event(zclient->master, zclient_connect, zclient, 0, |
2038 | &zclient->t_connect); | |
718e3744 | 2039 | break; |
2040 | case ZCLIENT_CONNECT: | |
718e3744 | 2041 | if (zclient_debug) |
b0e67bb0 DS |
2042 | zlog_debug ("zclient connect failures: %d schedule interval is now %d", |
2043 | zclient->fail, zclient->fail < 3 ? 10 : 60); | |
ffa2c898 QY |
2044 | thread_add_timer(zclient->master, zclient_connect, zclient, |
2045 | zclient->fail < 3 ? 10 : 60, &zclient->t_connect); | |
718e3744 | 2046 | break; |
2047 | case ZCLIENT_READ: | |
66e78ae6 QY |
2048 | zclient->t_read = NULL; |
2049 | thread_add_read(zclient->master, zclient_read, zclient, zclient->sock, | |
2050 | &zclient->t_read); | |
718e3744 | 2051 | break; |
2052 | } | |
2053 | } | |
b5114685 | 2054 | |
744f4685 | 2055 | const char *zclient_serv_path_get() |
12e41d03 DL |
2056 | { |
2057 | return zclient_serv_path ? zclient_serv_path : ZEBRA_SERV_PATH; | |
2058 | } | |
2059 | ||
b5114685 VT |
2060 | void |
2061 | zclient_serv_path_set (char *path) | |
2062 | { | |
2063 | struct stat sb; | |
2064 | ||
2065 | /* reset */ | |
2066 | zclient_serv_path = NULL; | |
2067 | ||
2068 | /* test if `path' is socket. don't set it otherwise. */ | |
2069 | if (stat(path, &sb) == -1) | |
2070 | { | |
2071 | zlog_warn ("%s: zebra socket `%s' does not exist", __func__, path); | |
2072 | return; | |
2073 | } | |
2074 | ||
2075 | if ((sb.st_mode & S_IFMT) != S_IFSOCK) | |
2076 | { | |
2077 | zlog_warn ("%s: `%s' is not unix socket, sir", __func__, path); | |
2078 | return; | |
2079 | } | |
2080 | ||
2081 | /* it seems that path is unix socket */ | |
2082 | zclient_serv_path = path; | |
2083 | } | |
2084 |