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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]; | |
1da29456 | 1080 | struct vrf_data data; |
1892f15e | 1081 | |
1da29456 | 1082 | stream_get (&data, zclient->ibuf, sizeof (struct vrf_data)); |
1892f15e | 1083 | /* Read interface name. */ |
ebe32f70 | 1084 | stream_get (vrfname_tmp, zclient->ibuf, VRF_NAMSIZ); |
1892f15e DS |
1085 | |
1086 | /* Lookup/create vrf by vrf_id. */ | |
1087 | vrf = vrf_get (vrf_id, vrfname_tmp); | |
1da29456 | 1088 | vrf->data = data; |
1892f15e | 1089 | |
2fcc254e | 1090 | vrf_enable (vrf); |
1892f15e DS |
1091 | } |
1092 | ||
2fcc254e | 1093 | static void |
ebe32f70 | 1094 | zclient_vrf_delete (struct zclient *zclient, vrf_id_t vrf_id) |
1892f15e DS |
1095 | { |
1096 | struct vrf *vrf; | |
1097 | ||
1098 | /* Lookup vrf by vrf_id. */ | |
5f3d1bdf | 1099 | vrf = vrf_lookup_by_id (vrf_id); |
1892f15e | 1100 | |
beef1990 DS |
1101 | /* |
1102 | * If a routing protocol doesn't know about a | |
1103 | * vrf that is about to be deleted. There is | |
1104 | * no point in attempting to delete it. | |
1105 | */ | |
1106 | if (!vrf) | |
1107 | return; | |
1108 | ||
2fcc254e | 1109 | vrf_delete (vrf); |
1892f15e DS |
1110 | } |
1111 | ||
718e3744 | 1112 | struct interface * |
7076bb2f | 1113 | zebra_interface_add_read (struct stream *s, vrf_id_t vrf_id) |
718e3744 | 1114 | { |
1115 | struct interface *ifp; | |
02ff83c5 | 1116 | char ifname_tmp[INTERFACE_NAMSIZ]; |
718e3744 | 1117 | |
1118 | /* Read interface name. */ | |
1119 | stream_get (ifname_tmp, s, INTERFACE_NAMSIZ); | |
1120 | ||
a349198f | 1121 | /* Lookup/create interface by name. */ |
07a112a1 DS |
1122 | ifp = if_get_by_name_len (ifname_tmp, |
1123 | strnlen (ifname_tmp, INTERFACE_NAMSIZ), | |
1124 | vrf_id, 0); | |
718e3744 | 1125 | |
51d4ef83 | 1126 | zebra_interface_if_set_value (s, ifp); |
718e3744 | 1127 | |
718e3744 | 1128 | return ifp; |
1129 | } | |
1130 | ||
0a589359 | 1131 | /* |
1132 | * Read interface up/down msg (ZEBRA_INTERFACE_UP/ZEBRA_INTERFACE_DOWN) | |
1133 | * from zebra server. The format of this message is the same as | |
1134 | * that sent for ZEBRA_INTERFACE_ADD/ZEBRA_INTERFACE_DELETE (see | |
1135 | * comments for zebra_interface_add_read), except that no sockaddr_dl | |
1136 | * is sent at the tail of the message. | |
1137 | */ | |
718e3744 | 1138 | struct interface * |
7076bb2f | 1139 | zebra_interface_state_read (struct stream *s, vrf_id_t vrf_id) |
718e3744 | 1140 | { |
1141 | struct interface *ifp; | |
02ff83c5 | 1142 | char ifname_tmp[INTERFACE_NAMSIZ]; |
718e3744 | 1143 | |
1144 | /* Read interface name. */ | |
1145 | stream_get (ifname_tmp, s, INTERFACE_NAMSIZ); | |
1146 | ||
1147 | /* Lookup this by interface index. */ | |
fa787f91 DS |
1148 | ifp = if_lookup_by_name_len (ifname_tmp, |
1149 | strnlen (ifname_tmp, INTERFACE_NAMSIZ), | |
1150 | vrf_id); | |
b4dd5eaa | 1151 | if (ifp == NULL) |
1152 | { | |
1153 | zlog_warn ("INTERFACE_STATE: Cannot find IF %s in VRF %d", | |
1154 | ifname_tmp, vrf_id); | |
1155 | return NULL; | |
1156 | } | |
718e3744 | 1157 | |
51d4ef83 | 1158 | zebra_interface_if_set_value (s, ifp); |
718e3744 | 1159 | |
1160 | return ifp; | |
1161 | } | |
1162 | ||
16f1b9ee OD |
1163 | static void |
1164 | link_params_set_value(struct stream *s, struct if_link_params *iflp) | |
1165 | { | |
1166 | ||
1167 | if (iflp == NULL) | |
1168 | return; | |
1169 | ||
1170 | iflp->lp_status = stream_getl (s); | |
1171 | iflp->te_metric = stream_getl (s); | |
1172 | iflp->max_bw = stream_getf (s); | |
1173 | iflp->max_rsv_bw = stream_getf (s); | |
1174 | uint32_t bwclassnum = stream_getl (s); | |
1175 | { | |
1176 | unsigned int i; | |
1177 | for (i = 0; i < bwclassnum && i < MAX_CLASS_TYPE; i++) | |
1178 | iflp->unrsv_bw[i] = stream_getf (s); | |
1179 | if (i < bwclassnum) | |
1180 | zlog_err ("%s: received %d > %d (MAX_CLASS_TYPE) bw entries" | |
1181 | " - outdated library?", | |
1182 | __func__, bwclassnum, MAX_CLASS_TYPE); | |
1183 | } | |
1184 | iflp->admin_grp = stream_getl (s); | |
1185 | iflp->rmt_as = stream_getl (s); | |
1186 | iflp->rmt_ip.s_addr = stream_get_ipv4 (s); | |
1187 | ||
1188 | iflp->av_delay = stream_getl (s); | |
1189 | iflp->min_delay = stream_getl (s); | |
1190 | iflp->max_delay = stream_getl (s); | |
1191 | iflp->delay_var = stream_getl (s); | |
1192 | ||
1193 | iflp->pkt_loss = stream_getf (s); | |
1194 | iflp->res_bw = stream_getf (s); | |
1195 | iflp->ava_bw = stream_getf (s); | |
1196 | iflp->use_bw = stream_getf (s); | |
1197 | } | |
1198 | ||
1199 | struct interface * | |
1200 | zebra_interface_link_params_read (struct stream *s) | |
1201 | { | |
1202 | struct if_link_params *iflp; | |
c28e5b2a DS |
1203 | ifindex_t ifindex; |
1204 | ||
1205 | assert (s); | |
1206 | ||
1207 | ifindex = stream_getl (s); | |
16f1b9ee | 1208 | |
7e2b7603 | 1209 | struct interface *ifp = if_lookup_by_index (ifindex, VRF_DEFAULT); |
16f1b9ee | 1210 | |
c28e5b2a | 1211 | if (ifp == NULL) |
16f1b9ee OD |
1212 | { |
1213 | zlog_err ("%s: unknown ifindex %u, shouldn't happen", | |
1214 | __func__, ifindex); | |
1215 | return NULL; | |
1216 | } | |
1217 | ||
1218 | if ((iflp = if_link_params_get (ifp)) == NULL) | |
1219 | return NULL; | |
1220 | ||
1221 | link_params_set_value(s, iflp); | |
1222 | ||
1223 | return ifp; | |
1224 | } | |
1225 | ||
1226 | void | |
1227 | zebra_interface_if_set_value (struct stream *s, struct interface *ifp) | |
1228 | { | |
1229 | u_char link_params_status = 0; | |
1230 | ||
1231 | /* Read interface's index. */ | |
1232 | ifp->ifindex = stream_getl (s); | |
1233 | ifp->status = stream_getc (s); | |
1234 | ||
1235 | /* Read interface's value. */ | |
1236 | ifp->flags = stream_getq (s); | |
1237 | ifp->ptm_enable = stream_getc (s); | |
1238 | ifp->ptm_status = stream_getc (s); | |
1239 | ifp->metric = stream_getl (s); | |
2d7f0d76 | 1240 | ifp->speed = stream_getl (s); |
16f1b9ee OD |
1241 | ifp->mtu = stream_getl (s); |
1242 | ifp->mtu6 = stream_getl (s); | |
1243 | ifp->bandwidth = stream_getl (s); | |
1244 | ifp->ll_type = stream_getl (s); | |
1245 | ifp->hw_addr_len = stream_getl (s); | |
1246 | if (ifp->hw_addr_len) | |
1247 | stream_get (ifp->hw_addr, s, MIN(ifp->hw_addr_len, INTERFACE_HWADDR_MAX)); | |
1248 | ||
1249 | /* Read Traffic Engineering status */ | |
1250 | link_params_status = stream_getc (s); | |
1251 | /* Then, Traffic Engineering parameters if any */ | |
1252 | if (link_params_status) | |
1253 | { | |
1254 | struct if_link_params *iflp = if_link_params_get (ifp); | |
1255 | link_params_set_value(s, iflp); | |
1256 | } | |
1257 | } | |
1258 | ||
1259 | size_t | |
1260 | zebra_interface_link_params_write (struct stream *s, struct interface *ifp) | |
1261 | { | |
1262 | size_t w; | |
1263 | struct if_link_params *iflp; | |
1264 | int i; | |
1265 | ||
1266 | if (s == NULL || ifp == NULL || ifp->link_params == NULL) | |
1267 | return 0; | |
1268 | ||
1269 | iflp = ifp->link_params; | |
1270 | w = 0; | |
1271 | ||
1272 | w += stream_putl (s, iflp->lp_status); | |
1273 | ||
1274 | w += stream_putl (s, iflp->te_metric); | |
1275 | w += stream_putf (s, iflp->max_bw); | |
1276 | w += stream_putf (s, iflp->max_rsv_bw); | |
1277 | ||
1278 | w += stream_putl (s, MAX_CLASS_TYPE); | |
1279 | for (i = 0; i < MAX_CLASS_TYPE; i++) | |
1280 | w += stream_putf (s, iflp->unrsv_bw[i]); | |
1281 | ||
1282 | w += stream_putl (s, iflp->admin_grp); | |
1283 | w += stream_putl (s, iflp->rmt_as); | |
1284 | w += stream_put_in_addr (s, &iflp->rmt_ip); | |
1285 | ||
1286 | w += stream_putl (s, iflp->av_delay); | |
1287 | w += stream_putl (s, iflp->min_delay); | |
1288 | w += stream_putl (s, iflp->max_delay); | |
1289 | w += stream_putl (s, iflp->delay_var); | |
1290 | ||
1291 | w += stream_putf (s, iflp->pkt_loss); | |
1292 | w += stream_putf (s, iflp->res_bw); | |
1293 | w += stream_putf (s, iflp->ava_bw); | |
1294 | w += stream_putf (s, iflp->use_bw); | |
1295 | ||
1296 | return w; | |
1297 | } | |
1298 | ||
1299 | /* | |
0a589359 | 1300 | * format of message for address additon is: |
1301 | * 0 | |
1302 | * 0 1 2 3 4 5 6 7 | |
1303 | * +-+-+-+-+-+-+-+-+ | |
1304 | * | type | ZEBRA_INTERFACE_ADDRESS_ADD or | |
1305 | * +-+-+-+-+-+-+-+-+ ZEBRA_INTERFACE_ADDRES_DELETE | |
1306 | * | | | |
1307 | * + + | |
1308 | * | ifindex | | |
1309 | * + + | |
1310 | * | | | |
1311 | * + + | |
1312 | * | | | |
1313 | * +-+-+-+-+-+-+-+-+ | |
1314 | * | ifc_flags | flags for connected address | |
1315 | * +-+-+-+-+-+-+-+-+ | |
1316 | * | addr_family | | |
1317 | * +-+-+-+-+-+-+-+-+ | |
1318 | * | addr... | | |
1319 | * : : | |
1320 | * | | | |
1321 | * +-+-+-+-+-+-+-+-+ | |
1322 | * | addr_len | len of addr. E.g., addr_len = 4 for ipv4 addrs. | |
1323 | * +-+-+-+-+-+-+-+-+ | |
1324 | * | daddr.. | | |
1325 | * : : | |
1326 | * | | | |
1327 | * +-+-+-+-+-+-+-+-+ | |
0a589359 | 1328 | */ |
1329 | ||
3fb9cd6e | 1330 | static int |
1331 | memconstant(const void *s, int c, size_t n) | |
1332 | { | |
1333 | const u_char *p = s; | |
1334 | ||
1335 | while (n-- > 0) | |
1336 | if (*p++ != c) | |
1337 | return 0; | |
1338 | return 1; | |
1339 | } | |
1340 | ||
d5a5c8f0 | 1341 | |
718e3744 | 1342 | struct connected * |
7076bb2f | 1343 | zebra_interface_address_read (int type, struct stream *s, vrf_id_t vrf_id) |
718e3744 | 1344 | { |
b892f1dd | 1345 | ifindex_t ifindex; |
718e3744 | 1346 | struct interface *ifp; |
1347 | struct connected *ifc; | |
d9178828 | 1348 | struct prefix p, d, *dp; |
718e3744 | 1349 | int plen; |
0a589359 | 1350 | u_char ifc_flags; |
718e3744 | 1351 | |
0a589359 | 1352 | memset (&p, 0, sizeof(p)); |
1353 | memset (&d, 0, sizeof(d)); | |
718e3744 | 1354 | |
1355 | /* Get interface index. */ | |
1356 | ifindex = stream_getl (s); | |
1357 | ||
1358 | /* Lookup index. */ | |
7e2b7603 | 1359 | ifp = if_lookup_by_index (ifindex, vrf_id); |
718e3744 | 1360 | if (ifp == NULL) |
1361 | { | |
b4dd5eaa | 1362 | zlog_warn ("INTERFACE_ADDRESS_%s: Cannot find IF %u in VRF %d", |
1363 | (type == ZEBRA_INTERFACE_ADDRESS_ADD) ? "ADD" : "DEL", | |
1364 | ifindex, vrf_id); | |
718e3744 | 1365 | return NULL; |
1366 | } | |
1367 | ||
1368 | /* Fetch flag. */ | |
0a589359 | 1369 | ifc_flags = stream_getc (s); |
718e3744 | 1370 | |
1371 | /* Fetch interface address. */ | |
d9178828 PJ |
1372 | d.family = p.family = stream_getc (s); |
1373 | plen = prefix_blen (&d); | |
1374 | ||
1375 | zclient_stream_get_prefix (s, &p); | |
718e3744 | 1376 | |
1377 | /* Fetch destination address. */ | |
0a589359 | 1378 | stream_get (&d.u.prefix, s, plen); |
d9178828 PJ |
1379 | |
1380 | /* N.B. NULL destination pointers are encoded as all zeroes */ | |
1381 | dp = memconstant(&d.u.prefix,0,plen) ? NULL : &d; | |
1382 | ||
0a589359 | 1383 | if (type == ZEBRA_INTERFACE_ADDRESS_ADD) |
1384 | { | |
38485402 DS |
1385 | ifc = connected_lookup_prefix_exact (ifp, &p); |
1386 | if (!ifc) | |
1387 | { | |
1388 | /* N.B. NULL destination pointers are encoded as all zeroes */ | |
d9178828 | 1389 | ifc = connected_add_by_prefix(ifp, &p, dp); |
38485402 DS |
1390 | } |
1391 | if (ifc) | |
e4529636 AS |
1392 | { |
1393 | ifc->flags = ifc_flags; | |
1394 | if (ifc->destination) | |
1395 | ifc->destination->prefixlen = ifc->address->prefixlen; | |
90444ca3 DL |
1396 | else if (CHECK_FLAG(ifc->flags, ZEBRA_IFA_PEER)) |
1397 | { | |
1398 | /* carp interfaces on OpenBSD with 0.0.0.0/0 as "peer" */ | |
855110bb | 1399 | char buf[PREFIX_STRLEN]; |
90444ca3 DL |
1400 | zlog_warn("warning: interface %s address %s " |
1401 | "with peer flag set, but no peer address!", | |
855110bb TT |
1402 | ifp->name, |
1403 | prefix2str (ifc->address, buf, sizeof buf)); | |
90444ca3 DL |
1404 | UNSET_FLAG(ifc->flags, ZEBRA_IFA_PEER); |
1405 | } | |
e4529636 | 1406 | } |
0a589359 | 1407 | } |
1408 | else | |
1409 | { | |
1410 | assert (type == ZEBRA_INTERFACE_ADDRESS_DELETE); | |
1411 | ifc = connected_delete_by_prefix(ifp, &p); | |
1412 | } | |
718e3744 | 1413 | |
1414 | return ifc; | |
1415 | } | |
0a589359 | 1416 | |
a80beece DS |
1417 | /* |
1418 | * format of message for neighbor connected address is: | |
1419 | * 0 | |
1420 | * 0 1 2 3 4 5 6 7 | |
1421 | * +-+-+-+-+-+-+-+-+ | |
1422 | * | type | ZEBRA_INTERFACE_NBR_ADDRESS_ADD or | |
1423 | * +-+-+-+-+-+-+-+-+ ZEBRA_INTERFACE_NBR_ADDRES_DELETE | |
1424 | * | | | |
1425 | * + + | |
1426 | * | ifindex | | |
1427 | * + + | |
1428 | * | | | |
1429 | * + + | |
1430 | * | | | |
1431 | * +-+-+-+-+-+-+-+-+ | |
1432 | * | addr_family | | |
1433 | * +-+-+-+-+-+-+-+-+ | |
1434 | * | addr... | | |
1435 | * : : | |
1436 | * | | | |
1437 | * +-+-+-+-+-+-+-+-+ | |
1438 | * | addr_len | len of addr. | |
1439 | * +-+-+-+-+-+-+-+-+ | |
1440 | */ | |
1441 | struct nbr_connected * | |
7076bb2f | 1442 | zebra_interface_nbr_address_read (int type, struct stream *s, vrf_id_t vrf_id) |
a80beece DS |
1443 | { |
1444 | unsigned int ifindex; | |
1445 | struct interface *ifp; | |
1446 | struct prefix p; | |
1447 | struct nbr_connected *ifc; | |
1448 | ||
1449 | /* Get interface index. */ | |
1450 | ifindex = stream_getl (s); | |
1451 | ||
1452 | /* Lookup index. */ | |
7e2b7603 | 1453 | ifp = if_lookup_by_index (ifindex, vrf_id); |
a80beece DS |
1454 | if (ifp == NULL) |
1455 | { | |
f1aa3df6 | 1456 | zlog_warn ("INTERFACE_NBR_%s: Cannot find IF %u in VRF %d", |
1457 | (type == ZEBRA_INTERFACE_NBR_ADDRESS_ADD) ? "ADD" : "DELETE", | |
1458 | ifindex, vrf_id); | |
a80beece DS |
1459 | return NULL; |
1460 | } | |
1461 | ||
1462 | p.family = stream_getc (s); | |
1463 | stream_get (&p.u.prefix, s, prefix_blen (&p)); | |
1464 | p.prefixlen = stream_getc (s); | |
1465 | ||
1466 | if (type == ZEBRA_INTERFACE_NBR_ADDRESS_ADD) | |
1467 | { | |
1468 | /* Currently only supporting P2P links, so any new RA source address is | |
1469 | considered as the replacement of the previously learnt Link-Local address. */ | |
1470 | if (!(ifc = listnode_head(ifp->nbr_connected))) | |
1471 | { | |
1472 | ifc = nbr_connected_new (); | |
1473 | ifc->address = prefix_new (); | |
1474 | ifc->ifp = ifp; | |
1475 | listnode_add (ifp->nbr_connected, ifc); | |
1476 | } | |
1477 | ||
1478 | prefix_copy(ifc->address, &p); | |
1479 | } | |
1480 | else | |
1481 | { | |
1482 | assert (type == ZEBRA_INTERFACE_NBR_ADDRESS_DELETE); | |
1483 | ||
1484 | ifc = nbr_connected_check(ifp, &p); | |
1485 | if (ifc) | |
1486 | listnode_delete (ifp->nbr_connected, ifc); | |
1487 | } | |
1488 | ||
1489 | return ifc; | |
1490 | } | |
6b0655a2 | 1491 | |
c8e264b6 | 1492 | struct interface * |
1493 | zebra_interface_vrf_update_read (struct stream *s, vrf_id_t vrf_id, | |
1494 | vrf_id_t *new_vrf_id) | |
1495 | { | |
1496 | unsigned int ifindex; | |
1497 | struct interface *ifp; | |
1498 | vrf_id_t new_id = VRF_DEFAULT; | |
1499 | ||
1500 | /* Get interface index. */ | |
1501 | ifindex = stream_getl (s); | |
1502 | ||
1503 | /* Lookup interface. */ | |
7e2b7603 | 1504 | ifp = if_lookup_by_index (ifindex, vrf_id); |
c8e264b6 | 1505 | if (ifp == NULL) |
1506 | { | |
1507 | zlog_warn ("INTERFACE_VRF_UPDATE: Cannot find IF %u in VRF %d", | |
1508 | ifindex, vrf_id); | |
1509 | return NULL; | |
1510 | } | |
1511 | ||
1512 | /* Fetch new VRF Id. */ | |
1513 | new_id = stream_getw (s); | |
1514 | ||
1515 | *new_vrf_id = new_id; | |
1516 | return ifp; | |
1517 | } | |
5c7ef8dc | 1518 | |
1519 | /* filter unwanted messages until the expected one arrives */ | |
1520 | static int | |
1521 | zclient_read_sync_response (struct zclient *zclient, u_int16_t expected_cmd) | |
1522 | { | |
1523 | struct stream *s; | |
1524 | u_int16_t size; | |
1525 | u_char marker; | |
1526 | u_char version; | |
1527 | vrf_id_t vrf_id; | |
1528 | u_int16_t cmd; | |
1529 | fd_set readfds; | |
1530 | int ret; | |
1531 | ||
1532 | ret = 0; | |
1533 | cmd = expected_cmd + 1; | |
1534 | while (ret == 0 && cmd != expected_cmd) | |
1535 | { | |
1536 | s = zclient->ibuf; | |
1537 | stream_reset (s); | |
1538 | ||
1539 | /* wait until response arrives */ | |
1540 | FD_ZERO (&readfds); | |
1541 | FD_SET (zclient->sock, &readfds); | |
1542 | select (zclient->sock+1, &readfds, NULL, NULL, NULL); | |
1543 | if (!FD_ISSET(zclient->sock, &readfds)) | |
1544 | continue; | |
1545 | /* read response */ | |
1546 | ret = zclient_read_header (s, zclient->sock, &size, &marker, &version, | |
1547 | &vrf_id, &cmd); | |
1548 | if (zclient_debug) | |
1549 | zlog_debug ("%s: Response (%d bytes) received", __func__, size); | |
1550 | } | |
1551 | if (ret != 0) | |
1552 | { | |
1553 | zlog_err ("%s: Invalid Sync Message Reply", __func__); | |
1554 | return -1; | |
1555 | } | |
1556 | ||
1557 | return 0; | |
1558 | } | |
fea12efb | 1559 | /** |
1560 | * Connect to label manager in a syncronous way | |
1561 | * | |
1562 | * It first writes the request to zcient output buffer and then | |
1563 | * immediately reads the answer from the input buffer. | |
1564 | * | |
1565 | * @param zclient Zclient used to connect to label manager (zebra) | |
1566 | * @result Result of response | |
1567 | */ | |
1568 | int | |
1569 | lm_label_manager_connect (struct zclient *zclient) | |
1570 | { | |
1571 | int ret; | |
1572 | struct stream *s; | |
1573 | u_char result; | |
fea12efb | 1574 | |
08c08a35 DS |
1575 | if (zclient_debug) |
1576 | zlog_debug ("Connecting to Label Manager"); | |
1577 | ||
fea12efb | 1578 | if (zclient->sock < 0) |
1579 | return -1; | |
1580 | ||
1581 | /* send request */ | |
1582 | s = zclient->obuf; | |
1583 | stream_reset (s); | |
1584 | zclient_create_header (s, ZEBRA_LABEL_MANAGER_CONNECT, VRF_DEFAULT); | |
1585 | ||
1586 | /* proto */ | |
1587 | stream_putc (s, zclient->redist_default); | |
1588 | /* instance */ | |
1589 | stream_putw (s, zclient->instance); | |
1590 | ||
1591 | /* Put length at the first point of the stream. */ | |
1592 | stream_putw_at(s, 0, stream_get_endp(s)); | |
1593 | ||
1594 | ret = writen (zclient->sock, s->data, stream_get_endp (s)); | |
1595 | if (ret < 0) | |
1596 | { | |
1597 | zlog_err ("%s: can't write to zclient->sock", __func__); | |
1598 | close (zclient->sock); | |
1599 | zclient->sock = -1; | |
1600 | return -1; | |
1601 | } | |
1602 | if (ret == 0) | |
1603 | { | |
1604 | zlog_err ("%s: zclient->sock connection closed", __func__); | |
1605 | close (zclient->sock); | |
1606 | zclient->sock = -1; | |
1607 | return -1; | |
1608 | } | |
08c08a35 DS |
1609 | if (zclient_debug) |
1610 | zlog_debug ("%s: Label manager connect request (%d bytes) sent", __func__, ret); | |
fea12efb | 1611 | |
1612 | /* read response */ | |
5c7ef8dc | 1613 | if (zclient_read_sync_response (zclient, ZEBRA_LABEL_MANAGER_CONNECT) != 0) |
1614 | return -1; | |
fea12efb | 1615 | |
fea12efb | 1616 | /* result */ |
5c7ef8dc | 1617 | s = zclient->ibuf; |
fea12efb | 1618 | result = stream_getc(s); |
08c08a35 | 1619 | if (zclient_debug) |
5c7ef8dc | 1620 | zlog_debug ("%s: Label Manager connect response received, result %u", |
1621 | __func__, result); | |
fea12efb | 1622 | |
1623 | return (int)result; | |
1624 | } | |
1625 | ||
1626 | /** | |
1627 | * Function to request a label chunk in a syncronous way | |
1628 | * | |
1629 | * It first writes the request to zlcient output buffer and then | |
1630 | * immediately reads the answer from the input buffer. | |
1631 | * | |
1632 | * @param zclient Zclient used to connect to label manager (zebra) | |
1633 | * @param keep Avoid garbage collection | |
1634 | * @param chunk_size Amount of labels requested | |
1635 | * @param start To write first assigned chunk label to | |
1636 | * @param end To write last assigned chunk label to | |
1637 | * @result 0 on success, -1 otherwise | |
1638 | */ | |
1639 | int | |
1640 | lm_get_label_chunk (struct zclient *zclient, u_char keep, uint32_t chunk_size, | |
1641 | uint32_t *start, uint32_t *end) | |
1642 | { | |
1643 | int ret; | |
1644 | struct stream *s; | |
fea12efb | 1645 | u_char response_keep; |
1646 | ||
08c08a35 DS |
1647 | if (zclient_debug) |
1648 | zlog_debug ("Getting Label Chunk"); | |
1649 | ||
fea12efb | 1650 | if (zclient->sock < 0) |
1651 | return -1; | |
1652 | ||
1653 | /* send request */ | |
1654 | s = zclient->obuf; | |
1655 | stream_reset (s); | |
1656 | zclient_create_header (s, ZEBRA_GET_LABEL_CHUNK, VRF_DEFAULT); | |
1657 | /* keep */ | |
1658 | stream_putc (s, keep); | |
1659 | /* chunk size */ | |
1660 | stream_putl (s, chunk_size); | |
1661 | /* Put length at the first point of the stream. */ | |
1662 | stream_putw_at(s, 0, stream_get_endp(s)); | |
1663 | ||
1664 | ret = writen (zclient->sock, s->data, stream_get_endp (s)); | |
1665 | if (ret < 0) | |
1666 | { | |
1667 | zlog_err ("%s: can't write to zclient->sock", __func__); | |
1668 | close (zclient->sock); | |
1669 | zclient->sock = -1; | |
1670 | return -1; | |
1671 | } | |
1672 | if (ret == 0) | |
1673 | { | |
1674 | zlog_err ("%s: zclient->sock connection closed", __func__); | |
1675 | close (zclient->sock); | |
1676 | zclient->sock = -1; | |
1677 | return -1; | |
1678 | } | |
08c08a35 DS |
1679 | if (zclient_debug) |
1680 | zlog_debug ("%s: Label chunk request (%d bytes) sent", __func__, ret); | |
fea12efb | 1681 | |
1682 | /* read response */ | |
5c7ef8dc | 1683 | if (zclient_read_sync_response (zclient, ZEBRA_GET_LABEL_CHUNK) != 0) |
1684 | return -1; | |
08c08a35 | 1685 | |
5c7ef8dc | 1686 | s = zclient->ibuf; |
fea12efb | 1687 | /* keep */ |
1688 | response_keep = stream_getc(s); | |
1689 | /* start and end labels */ | |
1690 | *start = stream_getl(s); | |
1691 | *end = stream_getl(s); | |
1692 | ||
1693 | /* not owning this response */ | |
5c7ef8dc | 1694 | if (keep != response_keep) |
1695 | { | |
1696 | zlog_err ("%s: Invalid Label chunk: %u - %u, keeps mismatch %u != %u", | |
1697 | __func__, *start, *end, keep, response_keep); | |
1698 | } | |
fea12efb | 1699 | /* sanity */ |
1700 | if (*start > *end | |
1701 | || *start < MPLS_MIN_UNRESERVED_LABEL | |
5c7ef8dc | 1702 | || *end > MPLS_MAX_UNRESERVED_LABEL) |
1703 | { | |
1704 | zlog_err ("%s: Invalid Label chunk: %u - %u", __func__, | |
1705 | *start, *end); | |
1706 | return -1; | |
1707 | } | |
fea12efb | 1708 | |
08c08a35 DS |
1709 | if (zclient_debug) |
1710 | zlog_debug ("Label Chunk assign: %u - %u (%u) ", | |
1711 | *start, *end, response_keep); | |
fea12efb | 1712 | |
1713 | return 0; | |
1714 | } | |
1715 | ||
1716 | /** | |
1717 | * Function to release a label chunk | |
1718 | * | |
1719 | * @param zclient Zclient used to connect to label manager (zebra) | |
1720 | * @param start First label of chunk | |
1721 | * @param end Last label of chunk | |
1722 | * @result 0 on success, -1 otherwise | |
1723 | */ | |
1724 | int | |
1725 | lm_release_label_chunk (struct zclient *zclient, uint32_t start, uint32_t end) | |
1726 | { | |
1727 | int ret; | |
1728 | struct stream *s; | |
1729 | ||
08c08a35 DS |
1730 | if (zclient_debug) |
1731 | zlog_debug ("Releasing Label Chunk"); | |
1732 | ||
fea12efb | 1733 | if (zclient->sock < 0) |
1734 | return -1; | |
1735 | ||
1736 | /* send request */ | |
1737 | s = zclient->obuf; | |
1738 | stream_reset (s); | |
1739 | zclient_create_header (s, ZEBRA_RELEASE_LABEL_CHUNK, VRF_DEFAULT); | |
1740 | ||
1741 | /* start */ | |
1742 | stream_putl (s, start); | |
1743 | /* end */ | |
1744 | stream_putl (s, end); | |
1745 | ||
1746 | /* Put length at the first point of the stream. */ | |
1747 | stream_putw_at(s, 0, stream_get_endp(s)); | |
1748 | ||
1749 | ret = writen (zclient->sock, s->data, stream_get_endp (s)); | |
1750 | if (ret < 0) | |
1751 | { | |
1752 | zlog_err ("%s: can't write to zclient->sock", __func__); | |
1753 | close (zclient->sock); | |
1754 | zclient->sock = -1; | |
1755 | return -1; | |
1756 | } | |
1757 | if (ret == 0) | |
1758 | { | |
1759 | zlog_err ("%s: zclient->sock connection closed", __func__); | |
1760 | close (zclient->sock); | |
1761 | zclient->sock = -1; | |
1762 | return -1; | |
1763 | } | |
1764 | ||
1765 | return 0; | |
1766 | } | |
c8e264b6 | 1767 | |
718e3744 | 1768 | /* Zebra client message read function. */ |
634f9ea2 | 1769 | static int |
718e3744 | 1770 | zclient_read (struct thread *thread) |
1771 | { | |
634f9ea2 | 1772 | size_t already; |
c1b9800a | 1773 | uint16_t length, command; |
1774 | uint8_t marker, version; | |
7076bb2f | 1775 | vrf_id_t vrf_id; |
718e3744 | 1776 | struct zclient *zclient; |
1777 | ||
1778 | /* Get socket to zebra. */ | |
718e3744 | 1779 | zclient = THREAD_ARG (thread); |
1780 | zclient->t_read = NULL; | |
1781 | ||
634f9ea2 | 1782 | /* Read zebra header (if we don't have it already). */ |
1783 | if ((already = stream_get_endp(zclient->ibuf)) < ZEBRA_HEADER_SIZE) | |
718e3744 | 1784 | { |
634f9ea2 | 1785 | ssize_t nbyte; |
1786 | if (((nbyte = stream_read_try(zclient->ibuf, zclient->sock, | |
1787 | ZEBRA_HEADER_SIZE-already)) == 0) || | |
1788 | (nbyte == -1)) | |
1789 | { | |
1790 | if (zclient_debug) | |
1791 | zlog_debug ("zclient connection closed socket [%d].", zclient->sock); | |
1792 | return zclient_failed(zclient); | |
1793 | } | |
1794 | if (nbyte != (ssize_t)(ZEBRA_HEADER_SIZE-already)) | |
1795 | { | |
1796 | /* Try again later. */ | |
1797 | zclient_event (ZCLIENT_READ, zclient); | |
1798 | return 0; | |
1799 | } | |
1800 | already = ZEBRA_HEADER_SIZE; | |
718e3744 | 1801 | } |
1802 | ||
634f9ea2 | 1803 | /* Reset to read from the beginning of the incoming packet. */ |
1804 | stream_set_getp(zclient->ibuf, 0); | |
718e3744 | 1805 | |
c1b9800a | 1806 | /* Fetch header values. */ |
718e3744 | 1807 | length = stream_getw (zclient->ibuf); |
c1b9800a | 1808 | marker = stream_getc (zclient->ibuf); |
1809 | version = stream_getc (zclient->ibuf); | |
7076bb2f | 1810 | vrf_id = stream_getw (zclient->ibuf); |
c1b9800a | 1811 | command = stream_getw (zclient->ibuf); |
1812 | ||
1813 | if (marker != ZEBRA_HEADER_MARKER || version != ZSERV_VERSION) | |
1814 | { | |
1815 | zlog_err("%s: socket %d version mismatch, marker %d, version %d", | |
1816 | __func__, zclient->sock, marker, version); | |
1817 | return zclient_failed(zclient); | |
1818 | } | |
1819 | ||
634f9ea2 | 1820 | if (length < ZEBRA_HEADER_SIZE) |
1821 | { | |
1822 | zlog_err("%s: socket %d message length %u is less than %d ", | |
1823 | __func__, zclient->sock, length, ZEBRA_HEADER_SIZE); | |
1824 | return zclient_failed(zclient); | |
1825 | } | |
1826 | ||
718e3744 | 1827 | /* Length check. */ |
634f9ea2 | 1828 | if (length > STREAM_SIZE(zclient->ibuf)) |
718e3744 | 1829 | { |
634f9ea2 | 1830 | struct stream *ns; |
1831 | zlog_warn("%s: message size %u exceeds buffer size %lu, expanding...", | |
1832 | __func__, length, (u_long)STREAM_SIZE(zclient->ibuf)); | |
1833 | ns = stream_new(length); | |
1834 | stream_copy(ns, zclient->ibuf); | |
718e3744 | 1835 | stream_free (zclient->ibuf); |
634f9ea2 | 1836 | zclient->ibuf = ns; |
718e3744 | 1837 | } |
718e3744 | 1838 | |
1839 | /* Read rest of zebra packet. */ | |
634f9ea2 | 1840 | if (already < length) |
1841 | { | |
1842 | ssize_t nbyte; | |
1843 | if (((nbyte = stream_read_try(zclient->ibuf, zclient->sock, | |
1844 | length-already)) == 0) || | |
1845 | (nbyte == -1)) | |
1846 | { | |
1847 | if (zclient_debug) | |
1848 | zlog_debug("zclient connection closed socket [%d].", zclient->sock); | |
1849 | return zclient_failed(zclient); | |
1850 | } | |
1851 | if (nbyte != (ssize_t)(length-already)) | |
1852 | { | |
1853 | /* Try again later. */ | |
1854 | zclient_event (ZCLIENT_READ, zclient); | |
1855 | return 0; | |
1856 | } | |
1857 | } | |
1858 | ||
1859 | length -= ZEBRA_HEADER_SIZE; | |
718e3744 | 1860 | |
0a589359 | 1861 | if (zclient_debug) |
7076bb2f | 1862 | zlog_debug("zclient 0x%p command 0x%x VRF %u\n", (void *)zclient, command, vrf_id); |
0a589359 | 1863 | |
718e3744 | 1864 | switch (command) |
1865 | { | |
18a6dce6 | 1866 | case ZEBRA_ROUTER_ID_UPDATE: |
1867 | if (zclient->router_id_update) | |
7076bb2f | 1868 | (*zclient->router_id_update) (command, zclient, length, vrf_id); |
18a6dce6 | 1869 | break; |
1892f15e | 1870 | case ZEBRA_VRF_ADD: |
ebe32f70 | 1871 | zclient_vrf_add (zclient, vrf_id); |
1892f15e DS |
1872 | break; |
1873 | case ZEBRA_VRF_DELETE: | |
ebe32f70 | 1874 | zclient_vrf_delete (zclient, vrf_id); |
1892f15e | 1875 | break; |
718e3744 | 1876 | case ZEBRA_INTERFACE_ADD: |
1877 | if (zclient->interface_add) | |
7076bb2f | 1878 | (*zclient->interface_add) (command, zclient, length, vrf_id); |
718e3744 | 1879 | break; |
1880 | case ZEBRA_INTERFACE_DELETE: | |
1881 | if (zclient->interface_delete) | |
7076bb2f | 1882 | (*zclient->interface_delete) (command, zclient, length, vrf_id); |
718e3744 | 1883 | break; |
1884 | case ZEBRA_INTERFACE_ADDRESS_ADD: | |
1885 | if (zclient->interface_address_add) | |
7076bb2f | 1886 | (*zclient->interface_address_add) (command, zclient, length, vrf_id); |
718e3744 | 1887 | break; |
1888 | case ZEBRA_INTERFACE_ADDRESS_DELETE: | |
1889 | if (zclient->interface_address_delete) | |
7076bb2f | 1890 | (*zclient->interface_address_delete) (command, zclient, length, vrf_id); |
718e3744 | 1891 | break; |
68fe91d6 | 1892 | case ZEBRA_INTERFACE_BFD_DEST_UPDATE: |
1893 | if (zclient->interface_bfd_dest_update) | |
7076bb2f | 1894 | (*zclient->interface_bfd_dest_update) (command, zclient, length, vrf_id); |
d5a5c8f0 | 1895 | break; |
a80beece DS |
1896 | case ZEBRA_INTERFACE_NBR_ADDRESS_ADD: |
1897 | if (zclient->interface_nbr_address_add) | |
7076bb2f | 1898 | (*zclient->interface_nbr_address_add) (command, zclient, length, vrf_id); |
a80beece DS |
1899 | break; |
1900 | case ZEBRA_INTERFACE_NBR_ADDRESS_DELETE: | |
1901 | if (zclient->interface_nbr_address_delete) | |
7076bb2f | 1902 | (*zclient->interface_nbr_address_delete) (command, zclient, length, vrf_id); |
a80beece | 1903 | break; |
718e3744 | 1904 | case ZEBRA_INTERFACE_UP: |
1905 | if (zclient->interface_up) | |
7076bb2f | 1906 | (*zclient->interface_up) (command, zclient, length, vrf_id); |
718e3744 | 1907 | break; |
1908 | case ZEBRA_INTERFACE_DOWN: | |
1909 | if (zclient->interface_down) | |
7076bb2f | 1910 | (*zclient->interface_down) (command, zclient, length, vrf_id); |
c8e264b6 | 1911 | break; |
1912 | case ZEBRA_INTERFACE_VRF_UPDATE: | |
1913 | if (zclient->interface_vrf_update) | |
1914 | (*zclient->interface_vrf_update) (command, zclient, length, vrf_id); | |
718e3744 | 1915 | break; |
fb018d25 DS |
1916 | case ZEBRA_NEXTHOP_UPDATE: |
1917 | if (zclient_debug) | |
1918 | zlog_debug("zclient rcvd nexthop update\n"); | |
1919 | if (zclient->nexthop_update) | |
7076bb2f | 1920 | (*zclient->nexthop_update) (command, zclient, length, vrf_id); |
fb018d25 | 1921 | break; |
078430f6 DS |
1922 | case ZEBRA_IMPORT_CHECK_UPDATE: |
1923 | if (zclient_debug) | |
1924 | zlog_debug("zclient rcvd import check update\n"); | |
1925 | if (zclient->import_check_update) | |
7076bb2f | 1926 | (*zclient->import_check_update) (command, zclient, length, vrf_id); |
078430f6 | 1927 | break; |
c43ed2e4 DS |
1928 | case ZEBRA_BFD_DEST_REPLAY: |
1929 | if (zclient->bfd_dest_replay) | |
7076bb2f | 1930 | (*zclient->bfd_dest_replay) (command, zclient, length, vrf_id); |
c43ed2e4 | 1931 | break; |
5048fe14 | 1932 | case ZEBRA_REDISTRIBUTE_IPV4_ADD: |
1933 | if (zclient->redistribute_route_ipv4_add) | |
7076bb2f | 1934 | (*zclient->redistribute_route_ipv4_add) (command, zclient, length, vrf_id); |
5048fe14 | 1935 | break; |
1936 | case ZEBRA_REDISTRIBUTE_IPV4_DEL: | |
1937 | if (zclient->redistribute_route_ipv4_del) | |
7076bb2f | 1938 | (*zclient->redistribute_route_ipv4_del) (command, zclient, length, vrf_id); |
5048fe14 | 1939 | break; |
1940 | case ZEBRA_REDISTRIBUTE_IPV6_ADD: | |
1941 | if (zclient->redistribute_route_ipv6_add) | |
7076bb2f | 1942 | (*zclient->redistribute_route_ipv6_add) (command, zclient, length, vrf_id); |
5048fe14 | 1943 | break; |
1944 | case ZEBRA_REDISTRIBUTE_IPV6_DEL: | |
1945 | if (zclient->redistribute_route_ipv6_del) | |
7076bb2f | 1946 | (*zclient->redistribute_route_ipv6_del) (command, zclient, length, vrf_id); |
5cd459e8 | 1947 | break; |
16f1b9ee OD |
1948 | case ZEBRA_INTERFACE_LINK_PARAMS: |
1949 | if (zclient->interface_link_params) | |
1950 | (*zclient->interface_link_params) (command, zclient, length); | |
5048fe14 | 1951 | break; |
5aba114a DS |
1952 | case ZEBRA_FEC_UPDATE: |
1953 | if (zclient_debug) | |
1954 | zlog_debug("zclient rcvd fec update\n"); | |
1955 | if (zclient->fec_update) | |
1956 | (*zclient->fec_update) (command, zclient, length); | |
1957 | break; | |
718e3744 | 1958 | default: |
1959 | break; | |
1960 | } | |
1961 | ||
634f9ea2 | 1962 | if (zclient->sock < 0) |
1963 | /* Connection was closed during packet processing. */ | |
1964 | return -1; | |
1965 | ||
718e3744 | 1966 | /* Register read thread. */ |
634f9ea2 | 1967 | stream_reset(zclient->ibuf); |
718e3744 | 1968 | zclient_event (ZCLIENT_READ, zclient); |
1969 | ||
1970 | return 0; | |
1971 | } | |
1972 | ||
1973 | void | |
8bb0831e | 1974 | zclient_redistribute (int command, struct zclient *zclient, afi_t afi, int type, |
7076bb2f | 1975 | u_short instance, vrf_id_t vrf_id) |
718e3744 | 1976 | { |
718e3744 | 1977 | |
7076bb2f FL |
1978 | if (instance) { |
1979 | if (command == ZEBRA_REDISTRIBUTE_ADD) | |
1980 | { | |
1981 | if (redist_check_instance(&zclient->mi_redist[afi][type], instance)) | |
1982 | return; | |
1983 | redist_add_instance(&zclient->mi_redist[afi][type], instance); | |
1984 | } | |
1985 | else | |
1986 | { | |
1987 | if (!redist_check_instance(&zclient->mi_redist[afi][type], instance)) | |
1988 | return; | |
1989 | redist_del_instance(&zclient->mi_redist[afi][type], instance); | |
1990 | } | |
1991 | ||
1992 | } else { | |
1993 | if (command == ZEBRA_REDISTRIBUTE_ADD) | |
1994 | { | |
1995 | if (vrf_bitmap_check (zclient->redist[afi][type], vrf_id)) | |
1996 | return; | |
1997 | vrf_bitmap_set (zclient->redist[afi][type], vrf_id); | |
1998 | } | |
1999 | else | |
2000 | { | |
2001 | if (!vrf_bitmap_check (zclient->redist[afi][type], vrf_id)) | |
2002 | return; | |
2003 | vrf_bitmap_unset (zclient->redist[afi][type], vrf_id); | |
2004 | } | |
2005 | } | |
718e3744 | 2006 | |
2007 | if (zclient->sock > 0) | |
7076bb2f | 2008 | zebra_redistribute_send (command, zclient, afi, type, instance, vrf_id); |
718e3744 | 2009 | } |
2010 | ||
718e3744 | 2011 | |
2012 | void | |
7076bb2f FL |
2013 | zclient_redistribute_default (int command, struct zclient *zclient, |
2014 | vrf_id_t vrf_id) | |
718e3744 | 2015 | { |
718e3744 | 2016 | |
0a589359 | 2017 | if (command == ZEBRA_REDISTRIBUTE_DEFAULT_ADD) |
2018 | { | |
7076bb2f | 2019 | if (vrf_bitmap_check (zclient->default_information, vrf_id)) |
0a589359 | 2020 | return; |
7076bb2f | 2021 | vrf_bitmap_set (zclient->default_information, vrf_id); |
0a589359 | 2022 | } |
2023 | else | |
2024 | { | |
7076bb2f | 2025 | if (!vrf_bitmap_check (zclient->default_information, vrf_id)) |
0a589359 | 2026 | return; |
7076bb2f | 2027 | vrf_bitmap_unset (zclient->default_information, vrf_id); |
0a589359 | 2028 | } |
718e3744 | 2029 | |
2030 | if (zclient->sock > 0) | |
7076bb2f | 2031 | zebra_message_send (zclient, command, vrf_id); |
718e3744 | 2032 | } |
2033 | ||
718e3744 | 2034 | static void |
2035 | zclient_event (enum event event, struct zclient *zclient) | |
2036 | { | |
2037 | switch (event) | |
2038 | { | |
2039 | case ZCLIENT_SCHEDULE: | |
ffa2c898 QY |
2040 | thread_add_event(zclient->master, zclient_connect, zclient, 0, |
2041 | &zclient->t_connect); | |
718e3744 | 2042 | break; |
2043 | case ZCLIENT_CONNECT: | |
718e3744 | 2044 | if (zclient_debug) |
b0e67bb0 DS |
2045 | zlog_debug ("zclient connect failures: %d schedule interval is now %d", |
2046 | zclient->fail, zclient->fail < 3 ? 10 : 60); | |
ffa2c898 QY |
2047 | thread_add_timer(zclient->master, zclient_connect, zclient, |
2048 | zclient->fail < 3 ? 10 : 60, &zclient->t_connect); | |
718e3744 | 2049 | break; |
2050 | case ZCLIENT_READ: | |
66e78ae6 QY |
2051 | zclient->t_read = NULL; |
2052 | thread_add_read(zclient->master, zclient_read, zclient, zclient->sock, | |
2053 | &zclient->t_read); | |
718e3744 | 2054 | break; |
2055 | } | |
2056 | } | |
b5114685 | 2057 | |
744f4685 | 2058 | const char *zclient_serv_path_get() |
12e41d03 DL |
2059 | { |
2060 | return zclient_serv_path ? zclient_serv_path : ZEBRA_SERV_PATH; | |
2061 | } | |
2062 | ||
b5114685 VT |
2063 | void |
2064 | zclient_serv_path_set (char *path) | |
2065 | { | |
2066 | struct stat sb; | |
2067 | ||
2068 | /* reset */ | |
2069 | zclient_serv_path = NULL; | |
2070 | ||
2071 | /* test if `path' is socket. don't set it otherwise. */ | |
2072 | if (stat(path, &sb) == -1) | |
2073 | { | |
2074 | zlog_warn ("%s: zebra socket `%s' does not exist", __func__, path); | |
2075 | return; | |
2076 | } | |
2077 | ||
2078 | if ((sb.st_mode & S_IFMT) != S_IFSOCK) | |
2079 | { | |
2080 | zlog_warn ("%s: `%s' is not unix socket, sir", __func__, path); | |
2081 | return; | |
2082 | } | |
2083 | ||
2084 | /* it seems that path is unix socket */ | |
2085 | zclient_serv_path = path; | |
2086 | } | |
2087 |