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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. */ |
d62a17ae | 43 | enum event { ZCLIENT_SCHEDULE, ZCLIENT_READ, ZCLIENT_CONNECT }; |
718e3744 | 44 | |
45 | /* Prototype for event manager. */ | |
d62a17ae | 46 | static void zclient_event(enum event, struct zclient *); |
718e3744 | 47 | |
689f5a8c DL |
48 | struct sockaddr_storage zclient_addr; |
49 | socklen_t zclient_addr_len; | |
b5114685 | 50 | |
718e3744 | 51 | /* This file local debug flag. */ |
52 | int zclient_debug = 0; | |
6b0655a2 | 53 | |
718e3744 | 54 | /* Allocate zclient structure. */ |
d62a17ae | 55 | struct zclient *zclient_new(struct thread_master *master) |
718e3744 | 56 | { |
d62a17ae | 57 | struct zclient *zclient; |
58 | zclient = XCALLOC(MTYPE_ZCLIENT, sizeof(struct zclient)); | |
718e3744 | 59 | |
d62a17ae | 60 | zclient->ibuf = stream_new(ZEBRA_MAX_PACKET_SIZ); |
61 | zclient->obuf = stream_new(ZEBRA_MAX_PACKET_SIZ); | |
62 | zclient->wb = buffer_new(0); | |
63 | zclient->master = master; | |
718e3744 | 64 | |
d62a17ae | 65 | return zclient; |
718e3744 | 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. */ |
d62a17ae | 73 | void zclient_free(struct zclient *zclient) |
718e3744 | 74 | { |
d62a17ae | 75 | if (zclient->ibuf) |
76 | stream_free(zclient->ibuf); | |
77 | if (zclient->obuf) | |
78 | stream_free(zclient->obuf); | |
79 | if (zclient->wb) | |
80 | buffer_free(zclient->wb); | |
81 | ||
82 | XFREE(MTYPE_ZCLIENT, zclient); | |
718e3744 | 83 | } |
84 | ||
d62a17ae | 85 | u_short *redist_check_instance(struct redist_proto *red, u_short instance) |
7c8ff89e | 86 | { |
d62a17ae | 87 | struct listnode *node; |
88 | u_short *id; | |
7c8ff89e | 89 | |
d62a17ae | 90 | if (!red->instances) |
91 | return NULL; | |
7c8ff89e | 92 | |
d62a17ae | 93 | for (ALL_LIST_ELEMENTS_RO(red->instances, node, id)) |
94 | if (*id == instance) | |
95 | return id; | |
7c8ff89e | 96 | |
d62a17ae | 97 | return NULL; |
7c8ff89e DS |
98 | } |
99 | ||
d62a17ae | 100 | void redist_add_instance(struct redist_proto *red, u_short instance) |
7c8ff89e | 101 | { |
d62a17ae | 102 | u_short *in; |
7c8ff89e | 103 | |
d62a17ae | 104 | red->enabled = 1; |
7c8ff89e | 105 | |
d62a17ae | 106 | if (!red->instances) |
107 | red->instances = list_new(); | |
7c8ff89e | 108 | |
d62a17ae | 109 | in = XMALLOC(MTYPE_REDIST_INST, sizeof(u_short)); |
110 | *in = instance; | |
111 | listnode_add(red->instances, in); | |
7c8ff89e DS |
112 | } |
113 | ||
d62a17ae | 114 | void redist_del_instance(struct redist_proto *red, u_short instance) |
7c8ff89e | 115 | { |
d62a17ae | 116 | u_short *id; |
117 | ||
118 | id = redist_check_instance(red, instance); | |
119 | if (!id) | |
120 | return; | |
121 | ||
122 | listnode_delete(red->instances, id); | |
123 | XFREE(MTYPE_REDIST_INST, id); | |
124 | if (!red->instances->count) { | |
125 | red->enabled = 0; | |
126 | list_free(red->instances); | |
127 | red->instances = NULL; | |
128 | } | |
7c8ff89e DS |
129 | } |
130 | ||
718e3744 | 131 | /* Stop zebra client services. */ |
d62a17ae | 132 | void zclient_stop(struct zclient *zclient) |
718e3744 | 133 | { |
d62a17ae | 134 | afi_t afi; |
135 | int i; | |
136 | ||
137 | if (zclient_debug) | |
138 | zlog_debug("zclient stopped"); | |
139 | ||
140 | /* Stop threads. */ | |
141 | THREAD_OFF(zclient->t_read); | |
142 | THREAD_OFF(zclient->t_connect); | |
143 | THREAD_OFF(zclient->t_write); | |
144 | ||
145 | /* Reset streams. */ | |
146 | stream_reset(zclient->ibuf); | |
147 | stream_reset(zclient->obuf); | |
148 | ||
149 | /* Empty the write buffer. */ | |
150 | buffer_reset(zclient->wb); | |
151 | ||
152 | /* Close socket. */ | |
153 | if (zclient->sock >= 0) { | |
154 | close(zclient->sock); | |
155 | zclient->sock = -1; | |
156 | } | |
157 | zclient->fail = 0; | |
158 | ||
159 | for (afi = AFI_IP; afi < AFI_MAX; afi++) { | |
160 | for (i = 0; i < ZEBRA_ROUTE_MAX; i++) { | |
161 | vrf_bitmap_free(zclient->redist[afi][i]); | |
162 | zclient->redist[afi][i] = VRF_BITMAP_NULL; | |
163 | } | |
164 | redist_del_instance( | |
165 | &zclient->mi_redist[afi][zclient->redist_default], | |
166 | zclient->instance); | |
41246cb6 | 167 | } |
41246cb6 | 168 | |
d62a17ae | 169 | vrf_bitmap_free(zclient->default_information); |
170 | zclient->default_information = VRF_BITMAP_NULL; | |
718e3744 | 171 | } |
172 | ||
d62a17ae | 173 | void zclient_reset(struct zclient *zclient) |
718e3744 | 174 | { |
d62a17ae | 175 | afi_t afi; |
3d68677e | 176 | |
d62a17ae | 177 | zclient_stop(zclient); |
3d68677e | 178 | |
d62a17ae | 179 | for (afi = AFI_IP; afi < AFI_MAX; afi++) |
180 | redist_del_instance( | |
181 | &zclient->mi_redist[afi][zclient->redist_default], | |
182 | zclient->instance); | |
3d68677e | 183 | |
d62a17ae | 184 | zclient_init(zclient, zclient->redist_default, zclient->instance); |
718e3744 | 185 | } |
186 | ||
689f5a8c DL |
187 | /** |
188 | * Connect to zebra daemon. | |
189 | * @param zclient a pointer to zclient structure | |
190 | * @return socket fd just to make sure that connection established | |
191 | * @see zclient_init | |
192 | * @see zclient_new | |
193 | */ | |
194 | int zclient_socket_connect(struct zclient *zclient) | |
718e3744 | 195 | { |
d62a17ae | 196 | int sock; |
197 | int ret; | |
d62a17ae | 198 | |
199 | /* We should think about IPv6 connection. */ | |
689f5a8c | 200 | sock = socket(zclient_addr.ss_family, SOCK_STREAM, 0); |
d62a17ae | 201 | if (sock < 0) |
202 | return -1; | |
203 | ||
689f5a8c | 204 | set_cloexec(sock); |
d62a17ae | 205 | |
206 | /* Connect to zebra. */ | |
689f5a8c DL |
207 | ret = connect(sock, (struct sockaddr *)&zclient_addr, |
208 | zclient_addr_len); | |
d62a17ae | 209 | if (ret < 0) { |
210 | if (zclient_debug) | |
211 | zlog_warn("%s connect failure: %d(%s)", | |
212 | __PRETTY_FUNCTION__, errno, | |
213 | safe_strerror(errno)); | |
214 | close(sock); | |
215 | return -1; | |
216 | } | |
718e3744 | 217 | |
689f5a8c | 218 | zclient->sock = sock; |
d62a17ae | 219 | return sock; |
718e3744 | 220 | } |
221 | ||
d62a17ae | 222 | static int zclient_failed(struct zclient *zclient) |
634f9ea2 | 223 | { |
d62a17ae | 224 | zclient->fail++; |
225 | zclient_stop(zclient); | |
226 | zclient_event(ZCLIENT_CONNECT, zclient); | |
227 | return -1; | |
634f9ea2 | 228 | } |
229 | ||
d62a17ae | 230 | static int zclient_flush_data(struct thread *thread) |
634f9ea2 | 231 | { |
d62a17ae | 232 | struct zclient *zclient = THREAD_ARG(thread); |
233 | ||
234 | zclient->t_write = NULL; | |
235 | if (zclient->sock < 0) | |
236 | return -1; | |
237 | switch (buffer_flush_available(zclient->wb, zclient->sock)) { | |
238 | case BUFFER_ERROR: | |
239 | zlog_warn( | |
240 | "%s: buffer_flush_available failed on zclient fd %d, closing", | |
241 | __func__, zclient->sock); | |
242 | return zclient_failed(zclient); | |
243 | break; | |
244 | case BUFFER_PENDING: | |
245 | zclient->t_write = NULL; | |
246 | thread_add_write(zclient->master, zclient_flush_data, zclient, | |
247 | zclient->sock, &zclient->t_write); | |
248 | break; | |
249 | case BUFFER_EMPTY: | |
250 | break; | |
251 | } | |
252 | return 0; | |
634f9ea2 | 253 | } |
254 | ||
d62a17ae | 255 | int zclient_send_message(struct zclient *zclient) |
634f9ea2 | 256 | { |
d62a17ae | 257 | if (zclient->sock < 0) |
258 | return -1; | |
259 | switch (buffer_write(zclient->wb, zclient->sock, | |
260 | STREAM_DATA(zclient->obuf), | |
261 | stream_get_endp(zclient->obuf))) { | |
262 | case BUFFER_ERROR: | |
263 | zlog_warn("%s: buffer_write failed to zclient fd %d, closing", | |
264 | __func__, zclient->sock); | |
265 | return zclient_failed(zclient); | |
266 | break; | |
267 | case BUFFER_EMPTY: | |
268 | THREAD_OFF(zclient->t_write); | |
269 | break; | |
270 | case BUFFER_PENDING: | |
271 | thread_add_write(zclient->master, zclient_flush_data, zclient, | |
272 | zclient->sock, &zclient->t_write); | |
273 | break; | |
274 | } | |
275 | return 0; | |
634f9ea2 | 276 | } |
277 | ||
d62a17ae | 278 | void zclient_create_header(struct stream *s, uint16_t command, vrf_id_t vrf_id) |
c1b9800a | 279 | { |
d62a17ae | 280 | /* length placeholder, caller can update */ |
281 | stream_putw(s, ZEBRA_HEADER_SIZE); | |
282 | stream_putc(s, ZEBRA_HEADER_MARKER); | |
283 | stream_putc(s, ZSERV_VERSION); | |
284 | stream_putw(s, vrf_id); | |
285 | stream_putw(s, command); | |
c1b9800a | 286 | } |
287 | ||
d62a17ae | 288 | int zclient_read_header(struct stream *s, int sock, u_int16_t *size, |
289 | u_char *marker, u_char *version, vrf_id_t *vrf_id, | |
290 | u_int16_t *cmd) | |
55119089 | 291 | { |
d62a17ae | 292 | if (stream_read(s, sock, ZEBRA_HEADER_SIZE) != ZEBRA_HEADER_SIZE) |
293 | return -1; | |
294 | ||
295 | *size = stream_getw(s) - ZEBRA_HEADER_SIZE; | |
296 | *marker = stream_getc(s); | |
297 | *version = stream_getc(s); | |
298 | *vrf_id = stream_getw(s); | |
299 | *cmd = stream_getw(s); | |
300 | ||
301 | if (*version != ZSERV_VERSION || *marker != ZEBRA_HEADER_MARKER) { | |
302 | zlog_err( | |
303 | "%s: socket %d version mismatch, marker %d, version %d", | |
304 | __func__, sock, *marker, *version); | |
305 | return -1; | |
306 | } | |
307 | ||
308 | if (*size && stream_read(s, sock, *size) != *size) | |
309 | return -1; | |
310 | ||
311 | return 0; | |
55119089 ND |
312 | } |
313 | ||
634f9ea2 | 314 | /* Send simple Zebra message. */ |
d62a17ae | 315 | static int zebra_message_send(struct zclient *zclient, int command, |
316 | vrf_id_t vrf_id) | |
718e3744 | 317 | { |
d62a17ae | 318 | struct stream *s; |
718e3744 | 319 | |
d62a17ae | 320 | /* Get zclient output buffer. */ |
321 | s = zclient->obuf; | |
322 | stream_reset(s); | |
718e3744 | 323 | |
d62a17ae | 324 | /* Send very simple command only Zebra message. */ |
325 | zclient_create_header(s, command, vrf_id); | |
326 | ||
327 | return zclient_send_message(zclient); | |
718e3744 | 328 | } |
329 | ||
d62a17ae | 330 | static int zebra_hello_send(struct zclient *zclient) |
2ea1ab1c | 331 | { |
d62a17ae | 332 | struct stream *s; |
333 | ||
334 | if (zclient->redist_default) { | |
335 | s = zclient->obuf; | |
336 | stream_reset(s); | |
337 | ||
338 | /* The VRF ID in the HELLO message is always 0. */ | |
339 | zclient_create_header(s, ZEBRA_HELLO, VRF_DEFAULT); | |
340 | stream_putc(s, zclient->redist_default); | |
341 | stream_putw(s, zclient->instance); | |
342 | stream_putw_at(s, 0, stream_get_endp(s)); | |
343 | return zclient_send_message(zclient); | |
344 | } | |
345 | ||
346 | return 0; | |
2ea1ab1c VT |
347 | } |
348 | ||
0e5223e7 | 349 | /* Send register requests to zebra daemon for the information in a VRF. */ |
d62a17ae | 350 | void zclient_send_reg_requests(struct zclient *zclient, vrf_id_t vrf_id) |
7076bb2f | 351 | { |
d62a17ae | 352 | int i; |
353 | afi_t afi; | |
354 | ||
d62a17ae | 355 | /* If not connected to the zebra yet. */ |
356 | if (zclient->sock < 0) | |
357 | return; | |
358 | ||
359 | if (zclient_debug) | |
360 | zlog_debug("%s: send register messages for VRF %u", __func__, | |
361 | vrf_id); | |
362 | ||
363 | /* We need router-id information. */ | |
364 | zebra_message_send(zclient, ZEBRA_ROUTER_ID_ADD, vrf_id); | |
365 | ||
366 | /* We need interface information. */ | |
367 | zebra_message_send(zclient, ZEBRA_INTERFACE_ADD, vrf_id); | |
368 | ||
369 | /* Set unwanted redistribute route. */ | |
370 | for (afi = AFI_IP; afi < AFI_MAX; afi++) | |
371 | vrf_bitmap_set(zclient->redist[afi][zclient->redist_default], | |
372 | vrf_id); | |
373 | ||
374 | /* Flush all redistribute request. */ | |
375 | if (vrf_id == VRF_DEFAULT) | |
376 | for (afi = AFI_IP; afi < AFI_MAX; afi++) | |
377 | for (i = 0; i < ZEBRA_ROUTE_MAX; i++) | |
378 | if (zclient->mi_redist[afi][i].enabled) { | |
379 | struct listnode *node; | |
380 | u_short *id; | |
381 | ||
382 | for (ALL_LIST_ELEMENTS_RO( | |
383 | zclient->mi_redist[afi][i] | |
384 | .instances, | |
385 | node, id)) | |
386 | if (!(i == zclient->redist_default | |
387 | && *id == zclient->instance)) | |
388 | zebra_redistribute_send( | |
389 | ZEBRA_REDISTRIBUTE_ADD, | |
390 | zclient, afi, i, | |
391 | *id, | |
392 | VRF_DEFAULT); | |
393 | } | |
394 | ||
395 | /* Flush all redistribute request. */ | |
396 | for (afi = AFI_IP; afi < AFI_MAX; afi++) | |
397 | for (i = 0; i < ZEBRA_ROUTE_MAX; i++) | |
398 | if (i != zclient->redist_default | |
399 | && vrf_bitmap_check(zclient->redist[afi][i], | |
400 | vrf_id)) | |
401 | zebra_redistribute_send(ZEBRA_REDISTRIBUTE_ADD, | |
402 | zclient, afi, i, 0, | |
403 | vrf_id); | |
404 | ||
405 | /* If default information is needed. */ | |
406 | if (vrf_bitmap_check(zclient->default_information, VRF_DEFAULT)) | |
407 | zebra_message_send(zclient, ZEBRA_REDISTRIBUTE_DEFAULT_ADD, | |
408 | vrf_id); | |
7076bb2f FL |
409 | } |
410 | ||
0e5223e7 | 411 | /* Send unregister requests to zebra daemon for the information in a VRF. */ |
d62a17ae | 412 | void zclient_send_dereg_requests(struct zclient *zclient, vrf_id_t vrf_id) |
0e5223e7 | 413 | { |
d62a17ae | 414 | int i; |
415 | afi_t afi; | |
416 | ||
d62a17ae | 417 | /* If not connected to the zebra yet. */ |
418 | if (zclient->sock < 0) | |
419 | return; | |
420 | ||
421 | if (zclient_debug) | |
422 | zlog_debug("%s: send deregister messages for VRF %u", __func__, | |
423 | vrf_id); | |
424 | ||
425 | /* We need router-id information. */ | |
426 | zebra_message_send(zclient, ZEBRA_ROUTER_ID_DELETE, vrf_id); | |
427 | ||
428 | /* We need interface information. */ | |
429 | zebra_message_send(zclient, ZEBRA_INTERFACE_DELETE, vrf_id); | |
430 | ||
431 | /* Set unwanted redistribute route. */ | |
432 | for (afi = AFI_IP; afi < AFI_MAX; afi++) | |
433 | vrf_bitmap_set(zclient->redist[afi][zclient->redist_default], | |
434 | vrf_id); | |
435 | ||
436 | /* Flush all redistribute request. */ | |
437 | if (vrf_id == VRF_DEFAULT) | |
438 | for (afi = AFI_IP; afi < AFI_MAX; afi++) | |
439 | for (i = 0; i < ZEBRA_ROUTE_MAX; i++) | |
440 | if (zclient->mi_redist[afi][i].enabled) { | |
441 | struct listnode *node; | |
442 | u_short *id; | |
443 | ||
444 | for (ALL_LIST_ELEMENTS_RO( | |
445 | zclient->mi_redist[afi][i] | |
446 | .instances, | |
447 | node, id)) | |
448 | if (!(i == zclient->redist_default | |
449 | && *id == zclient->instance)) | |
450 | zebra_redistribute_send( | |
451 | ZEBRA_REDISTRIBUTE_DELETE, | |
452 | zclient, afi, i, | |
453 | *id, | |
454 | VRF_DEFAULT); | |
455 | } | |
456 | ||
457 | /* Flush all redistribute request. */ | |
458 | for (afi = AFI_IP; afi < AFI_MAX; afi++) | |
459 | for (i = 0; i < ZEBRA_ROUTE_MAX; i++) | |
460 | if (i != zclient->redist_default | |
461 | && vrf_bitmap_check(zclient->redist[afi][i], | |
462 | vrf_id)) | |
463 | zebra_redistribute_send( | |
464 | ZEBRA_REDISTRIBUTE_DELETE, zclient, afi, | |
465 | i, 0, vrf_id); | |
466 | ||
467 | /* If default information is needed. */ | |
468 | if (vrf_bitmap_check(zclient->default_information, VRF_DEFAULT)) | |
469 | zebra_message_send(zclient, ZEBRA_REDISTRIBUTE_DEFAULT_DELETE, | |
470 | vrf_id); | |
0e5223e7 | 471 | } |
472 | ||
4a04e5f7 | 473 | /* Send request to zebra daemon to start or stop RA. */ |
d62a17ae | 474 | void zclient_send_interface_radv_req(struct zclient *zclient, vrf_id_t vrf_id, |
475 | struct interface *ifp, int enable, | |
476 | int ra_interval) | |
4a04e5f7 | 477 | { |
d62a17ae | 478 | struct stream *s; |
4a04e5f7 | 479 | |
d62a17ae | 480 | /* If not connected to the zebra yet. */ |
481 | if (zclient->sock < 0) | |
482 | return; | |
4a04e5f7 | 483 | |
d62a17ae | 484 | /* Form and send message. */ |
485 | s = zclient->obuf; | |
486 | stream_reset(s); | |
4a04e5f7 | 487 | |
d62a17ae | 488 | if (enable) |
489 | zclient_create_header(s, ZEBRA_INTERFACE_ENABLE_RADV, vrf_id); | |
490 | else | |
491 | zclient_create_header(s, ZEBRA_INTERFACE_DISABLE_RADV, vrf_id); | |
4a04e5f7 | 492 | |
d62a17ae | 493 | stream_putl(s, ifp->ifindex); |
494 | stream_putl(s, ra_interval); | |
4a04e5f7 | 495 | |
d62a17ae | 496 | stream_putw_at(s, 0, stream_get_endp(s)); |
4a04e5f7 | 497 | |
d62a17ae | 498 | zclient_send_message(zclient); |
4a04e5f7 | 499 | } |
500 | ||
718e3744 | 501 | /* Make connection to zebra daemon. */ |
d62a17ae | 502 | int zclient_start(struct zclient *zclient) |
718e3744 | 503 | { |
d62a17ae | 504 | if (zclient_debug) |
505 | zlog_info("zclient_start is called"); | |
506 | ||
d62a17ae | 507 | /* If already connected to the zebra. */ |
508 | if (zclient->sock >= 0) | |
509 | return 0; | |
510 | ||
511 | /* Check connect thread. */ | |
512 | if (zclient->t_connect) | |
513 | return 0; | |
514 | ||
515 | if (zclient_socket_connect(zclient) < 0) { | |
516 | if (zclient_debug) | |
517 | zlog_debug("zclient connection fail"); | |
518 | zclient->fail++; | |
519 | zclient_event(ZCLIENT_CONNECT, zclient); | |
520 | return -1; | |
521 | } | |
718e3744 | 522 | |
d62a17ae | 523 | if (set_nonblocking(zclient->sock) < 0) |
524 | zlog_warn("%s: set_nonblocking(%d) failed", __func__, | |
525 | zclient->sock); | |
718e3744 | 526 | |
d62a17ae | 527 | /* Clear fail count. */ |
528 | zclient->fail = 0; | |
529 | if (zclient_debug) | |
530 | zlog_debug("zclient connect success with socket [%d]", | |
531 | zclient->sock); | |
718e3744 | 532 | |
d62a17ae | 533 | /* Create read thread. */ |
534 | zclient_event(ZCLIENT_READ, zclient); | |
718e3744 | 535 | |
d62a17ae | 536 | zebra_hello_send(zclient); |
718e3744 | 537 | |
d62a17ae | 538 | /* Inform the successful connection. */ |
539 | if (zclient->zebra_connected) | |
540 | (*zclient->zebra_connected)(zclient); | |
718e3744 | 541 | |
d62a17ae | 542 | return 0; |
718e3744 | 543 | } |
6b0655a2 | 544 | |
078430f6 DS |
545 | /* Initialize zebra client. Argument redist_default is unwanted |
546 | redistribute route type. */ | |
d62a17ae | 547 | void zclient_init(struct zclient *zclient, int redist_default, u_short instance) |
078430f6 | 548 | { |
d62a17ae | 549 | int afi, i; |
550 | ||
d62a17ae | 551 | /* Set -1 to the default socket value. */ |
552 | zclient->sock = -1; | |
553 | ||
554 | /* Clear redistribution flags. */ | |
555 | for (afi = AFI_IP; afi < AFI_MAX; afi++) | |
556 | for (i = 0; i < ZEBRA_ROUTE_MAX; i++) | |
557 | zclient->redist[afi][i] = vrf_bitmap_init(); | |
558 | ||
559 | /* Set unwanted redistribute route. bgpd does not need BGP route | |
560 | redistribution. */ | |
561 | zclient->redist_default = redist_default; | |
562 | zclient->instance = instance; | |
563 | /* Pending: make afi(s) an arg. */ | |
564 | for (afi = AFI_IP; afi < AFI_MAX; afi++) | |
565 | redist_add_instance(&zclient->mi_redist[afi][redist_default], | |
566 | instance); | |
567 | ||
568 | /* Set default-information redistribute to zero. */ | |
569 | zclient->default_information = vrf_bitmap_init(); | |
570 | ; | |
571 | ||
572 | if (zclient_debug) | |
573 | zlog_debug("zclient_start is called"); | |
574 | ||
575 | zclient_event(ZCLIENT_SCHEDULE, zclient); | |
7076bb2f | 576 | } |
078430f6 | 577 | |
7076bb2f FL |
578 | /* This function is a wrapper function for calling zclient_start from |
579 | timer or event thread. */ | |
d62a17ae | 580 | static int zclient_connect(struct thread *t) |
7076bb2f | 581 | { |
d62a17ae | 582 | struct zclient *zclient; |
078430f6 | 583 | |
d62a17ae | 584 | zclient = THREAD_ARG(t); |
585 | zclient->t_connect = NULL; | |
078430f6 | 586 | |
d62a17ae | 587 | if (zclient_debug) |
588 | zlog_debug("zclient_connect is called"); | |
078430f6 | 589 | |
d62a17ae | 590 | return zclient_start(zclient); |
078430f6 DS |
591 | } |
592 | ||
d62a17ae | 593 | /* |
594 | * "xdr_encode"-like interface that allows daemon (client) to send | |
595 | * a message to zebra server for a route that needs to be | |
596 | * added/deleted to the kernel. Info about the route is specified | |
597 | * by the caller in a struct zapi_ipv4. zapi_ipv4_read() then writes | |
598 | * the info down the zclient socket using the stream_* functions. | |
599 | * | |
600 | * The corresponding read ("xdr_decode") function on the server | |
601 | * side is zread_ipv4_add()/zread_ipv4_delete(). | |
602 | * | |
603 | * 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 | |
604 | * +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+ | |
605 | * | Length (2) | Command | Route Type | | |
606 | * +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+ | |
607 | * | ZEBRA Flags | Message Flags | Prefix length | | |
608 | * +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+ | |
609 | * | Destination IPv4 Prefix for route | | |
610 | * +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+ | |
611 | * | Nexthop count | | |
612 | * +-+-+-+-+-+-+-+-+ | |
613 | * | |
614 | * | |
615 | * A number of IPv4 nexthop(s) or nexthop interface index(es) are then | |
616 | * described, as per the Nexthop count. Each nexthop described as: | |
617 | * | |
618 | * +-+-+-+-+-+-+-+-+ | |
619 | * | Nexthop Type | Set to one of ZEBRA_NEXTHOP_* | |
620 | * +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+ | |
621 | * | IPv4 Nexthop address or Interface Index number | | |
622 | * +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+ | |
623 | * | |
624 | * Alternatively, if the flags field has ZEBRA_FLAG_BLACKHOLE or | |
625 | * ZEBRA_FLAG_REJECT is set then Nexthop count is set to 1, then _no_ | |
626 | * nexthop information is provided, and the message describes a prefix | |
627 | * to blackhole or reject route. | |
628 | * | |
629 | * The original struct zapi_ipv4, zapi_ipv4_route() and zread_ipv4_*() | |
630 | * infrastructure was built around the traditional (32-bit "gate OR | |
631 | * ifindex") nexthop data unit. A special encoding can be used to feed | |
632 | * onlink (64-bit "gate AND ifindex") nexthops into zapi_ipv4_route() | |
633 | * using the same zapi_ipv4 structure. This is done by setting zapi_ipv4 | |
634 | * fields as follows: | |
635 | * - .message |= ZAPI_MESSAGE_NEXTHOP | ZAPI_MESSAGE_ONLINK | |
636 | * - .nexthop_num == .ifindex_num | |
637 | * - .nexthop and .ifindex are filled with gate and ifindex parts of | |
638 | * each compound nexthop, both in the same order | |
639 | * | |
640 | * zapi_ipv4_route() will produce two nexthop data units for each such | |
641 | * interleaved 64-bit nexthop. On the zserv side of the socket it will be | |
642 | * mapped to a singlle NEXTHOP_TYPE_IPV4_IFINDEX_OL RIB nexthop structure. | |
643 | * | |
644 | * If ZAPI_MESSAGE_DISTANCE is set, the distance value is written as a 1 | |
645 | * byte value. | |
646 | * | |
647 | * If ZAPI_MESSAGE_METRIC is set, the metric value is written as an 8 | |
648 | * byte value. | |
649 | * | |
650 | * If ZAPI_MESSAGE_TAG is set, the tag value is written as a 4 byte value | |
651 | * | |
652 | * If ZAPI_MESSAGE_MTU is set, the mtu value is written as a 4 byte value | |
653 | * | |
654 | * XXX: No attention paid to alignment. | |
655 | */ | |
656 | int zapi_ipv4_route(u_char cmd, struct zclient *zclient, struct prefix_ipv4 *p, | |
657 | struct zapi_ipv4 *api) | |
718e3744 | 658 | { |
d62a17ae | 659 | int i; |
660 | int psize; | |
661 | struct stream *s; | |
662 | ||
663 | /* Reset stream. */ | |
664 | s = zclient->obuf; | |
665 | stream_reset(s); | |
666 | ||
667 | /* Some checks for labeled-unicast. The current expectation is that each | |
668 | * nexthop is accompanied by a label in the case of labeled-unicast. | |
669 | */ | |
670 | if (CHECK_FLAG(api->message, ZAPI_MESSAGE_LABEL) | |
671 | && CHECK_FLAG(api->message, ZAPI_MESSAGE_NEXTHOP)) { | |
672 | /* We expect prefixes installed with labels and the number to | |
673 | * match | |
674 | * the number of nexthops. | |
675 | */ | |
676 | assert(api->label_num == api->nexthop_num); | |
677 | } | |
678 | ||
679 | zclient_create_header(s, cmd, api->vrf_id); | |
680 | ||
681 | /* Put type and nexthop. */ | |
682 | stream_putc(s, api->type); | |
683 | stream_putw(s, api->instance); | |
684 | stream_putl(s, api->flags); | |
685 | stream_putc(s, api->message); | |
686 | stream_putw(s, api->safi); | |
687 | ||
688 | /* Put prefix information. */ | |
689 | psize = PSIZE(p->prefixlen); | |
690 | stream_putc(s, p->prefixlen); | |
691 | stream_write(s, (u_char *)&p->prefix, psize); | |
692 | ||
693 | /* Nexthop, ifindex, distance and metric information. */ | |
694 | if (CHECK_FLAG(api->message, ZAPI_MESSAGE_NEXTHOP)) { | |
695 | /* traditional 32-bit data units */ | |
696 | if (CHECK_FLAG(api->flags, ZEBRA_FLAG_BLACKHOLE)) { | |
697 | stream_putc(s, 1); | |
698 | stream_putc(s, NEXTHOP_TYPE_BLACKHOLE); | |
699 | /* XXX assert(api->nexthop_num == 0); */ | |
700 | /* XXX assert(api->ifindex_num == 0); */ | |
701 | } else | |
702 | stream_putc(s, api->nexthop_num + api->ifindex_num); | |
703 | ||
704 | for (i = 0; i < api->nexthop_num; i++) { | |
705 | stream_putc(s, NEXTHOP_TYPE_IPV4); | |
706 | stream_put_in_addr(s, api->nexthop[i]); | |
707 | /* For labeled-unicast, each nexthop is followed by | |
708 | * label. */ | |
709 | if (CHECK_FLAG(api->message, ZAPI_MESSAGE_LABEL)) | |
710 | stream_putl(s, api->label[i]); | |
711 | } | |
712 | for (i = 0; i < api->ifindex_num; i++) { | |
713 | stream_putc(s, NEXTHOP_TYPE_IFINDEX); | |
714 | stream_putl(s, api->ifindex[i]); | |
715 | } | |
716 | } | |
717 | ||
718 | if (CHECK_FLAG(api->message, ZAPI_MESSAGE_DISTANCE)) | |
719 | stream_putc(s, api->distance); | |
720 | if (CHECK_FLAG(api->message, ZAPI_MESSAGE_METRIC)) | |
721 | stream_putl(s, api->metric); | |
722 | if (CHECK_FLAG(api->message, ZAPI_MESSAGE_TAG)) | |
723 | stream_putl(s, api->tag); | |
724 | if (CHECK_FLAG(api->message, ZAPI_MESSAGE_MTU)) | |
725 | stream_putl(s, api->mtu); | |
726 | ||
727 | /* Put length at the first point of the stream. */ | |
728 | stream_putw_at(s, 0, stream_get_endp(s)); | |
729 | ||
730 | return zclient_send_message(zclient); | |
718e3744 | 731 | } |
732 | ||
d62a17ae | 733 | int zapi_ipv4_route_ipv6_nexthop(u_char cmd, struct zclient *zclient, |
734 | struct prefix_ipv4 *p, struct zapi_ipv6 *api) | |
8a92a8a0 | 735 | { |
d62a17ae | 736 | int i; |
737 | int psize; | |
738 | struct stream *s; | |
739 | ||
740 | /* Reset stream. */ | |
741 | s = zclient->obuf; | |
742 | stream_reset(s); | |
743 | ||
744 | /* Some checks for labeled-unicast. The current expectation is that each | |
745 | * nexthop is accompanied by a label in the case of labeled-unicast. | |
746 | */ | |
747 | if (CHECK_FLAG(api->message, ZAPI_MESSAGE_LABEL) | |
748 | && CHECK_FLAG(api->message, ZAPI_MESSAGE_NEXTHOP)) { | |
749 | /* We expect prefixes installed with labels and the number to | |
750 | * match | |
751 | * the number of nexthops. | |
752 | */ | |
753 | assert(api->label_num == api->nexthop_num); | |
8a92a8a0 | 754 | } |
d62a17ae | 755 | |
756 | zclient_create_header(s, cmd, api->vrf_id); | |
757 | ||
758 | /* Put type and nexthop. */ | |
759 | stream_putc(s, api->type); | |
760 | stream_putw(s, api->instance); | |
761 | stream_putl(s, api->flags); | |
762 | stream_putc(s, api->message); | |
763 | stream_putw(s, api->safi); | |
764 | ||
765 | /* Put prefix information. */ | |
766 | psize = PSIZE(p->prefixlen); | |
767 | stream_putc(s, p->prefixlen); | |
768 | stream_write(s, (u_char *)&p->prefix, psize); | |
769 | ||
770 | /* Nexthop, ifindex, distance and metric information. */ | |
771 | if (CHECK_FLAG(api->message, ZAPI_MESSAGE_NEXTHOP)) { | |
772 | if (CHECK_FLAG(api->flags, ZEBRA_FLAG_BLACKHOLE)) { | |
773 | stream_putc(s, 1); | |
774 | stream_putc(s, NEXTHOP_TYPE_BLACKHOLE); | |
775 | /* XXX assert(api->nexthop_num == 0); */ | |
776 | /* XXX assert(api->ifindex_num == 0); */ | |
777 | } else | |
778 | stream_putc(s, api->nexthop_num + api->ifindex_num); | |
779 | ||
780 | for (i = 0; i < api->nexthop_num; i++) { | |
781 | stream_putc(s, NEXTHOP_TYPE_IPV6); | |
782 | stream_write(s, (u_char *)api->nexthop[i], 16); | |
783 | /* For labeled-unicast, each nexthop is followed by | |
784 | * label. */ | |
785 | if (CHECK_FLAG(api->message, ZAPI_MESSAGE_LABEL)) | |
786 | stream_putl(s, api->label[i]); | |
787 | } | |
788 | for (i = 0; i < api->ifindex_num; i++) { | |
789 | stream_putc(s, NEXTHOP_TYPE_IFINDEX); | |
790 | stream_putl(s, api->ifindex[i]); | |
791 | } | |
8a92a8a0 | 792 | } |
8a92a8a0 | 793 | |
d62a17ae | 794 | if (CHECK_FLAG(api->message, ZAPI_MESSAGE_DISTANCE)) |
795 | stream_putc(s, api->distance); | |
796 | if (CHECK_FLAG(api->message, ZAPI_MESSAGE_METRIC)) | |
797 | stream_putl(s, api->metric); | |
798 | if (CHECK_FLAG(api->message, ZAPI_MESSAGE_TAG)) | |
799 | stream_putl(s, api->tag); | |
800 | if (CHECK_FLAG(api->message, ZAPI_MESSAGE_MTU)) | |
801 | stream_putl(s, api->mtu); | |
8a92a8a0 | 802 | |
d62a17ae | 803 | /* Put length at the first point of the stream. */ |
804 | stream_putw_at(s, 0, stream_get_endp(s)); | |
8a92a8a0 | 805 | |
d62a17ae | 806 | return zclient_send_message(zclient); |
8a92a8a0 DS |
807 | } |
808 | ||
d62a17ae | 809 | int zapi_ipv6_route(u_char cmd, struct zclient *zclient, struct prefix_ipv6 *p, |
810 | struct prefix_ipv6 *src_p, struct zapi_ipv6 *api) | |
718e3744 | 811 | { |
d62a17ae | 812 | int i; |
813 | int psize; | |
814 | struct stream *s; | |
815 | ||
816 | /* either we have !SRCPFX && src_p == NULL, or SRCPFX && src_p != NULL | |
817 | */ | |
818 | assert(!(api->message & ZAPI_MESSAGE_SRCPFX) == !src_p); | |
819 | ||
820 | /* Reset stream. */ | |
821 | s = zclient->obuf; | |
822 | stream_reset(s); | |
823 | ||
824 | /* Some checks for labeled-unicast. The current expectation is that each | |
825 | * nexthop is accompanied by a label in the case of labeled-unicast. | |
826 | */ | |
827 | if (CHECK_FLAG(api->message, ZAPI_MESSAGE_LABEL) | |
828 | && CHECK_FLAG(api->message, ZAPI_MESSAGE_NEXTHOP)) { | |
829 | /* We expect prefixes installed with labels and the number to | |
830 | * match | |
831 | * the number of nexthops. | |
832 | */ | |
833 | assert(api->label_num == api->nexthop_num); | |
718e3744 | 834 | } |
d62a17ae | 835 | |
836 | zclient_create_header(s, cmd, api->vrf_id); | |
837 | ||
838 | /* Put type and nexthop. */ | |
839 | stream_putc(s, api->type); | |
840 | stream_putw(s, api->instance); | |
841 | stream_putl(s, api->flags); | |
842 | stream_putc(s, api->message); | |
843 | stream_putw(s, api->safi); | |
844 | ||
845 | /* Put prefix information. */ | |
846 | psize = PSIZE(p->prefixlen); | |
847 | stream_putc(s, p->prefixlen); | |
848 | stream_write(s, (u_char *)&p->prefix, psize); | |
849 | ||
850 | if (CHECK_FLAG(api->message, ZAPI_MESSAGE_SRCPFX)) { | |
851 | psize = PSIZE(src_p->prefixlen); | |
852 | stream_putc(s, src_p->prefixlen); | |
853 | stream_write(s, (u_char *)&src_p->prefix, psize); | |
718e3744 | 854 | } |
718e3744 | 855 | |
d62a17ae | 856 | /* Nexthop, ifindex, distance and metric information. */ |
857 | if (CHECK_FLAG(api->message, ZAPI_MESSAGE_NEXTHOP)) { | |
858 | if (CHECK_FLAG(api->flags, ZEBRA_FLAG_BLACKHOLE)) { | |
859 | stream_putc(s, 1); | |
860 | stream_putc(s, NEXTHOP_TYPE_BLACKHOLE); | |
861 | /* XXX assert(api->nexthop_num == 0); */ | |
862 | /* XXX assert(api->ifindex_num == 0); */ | |
863 | } else | |
864 | stream_putc(s, api->nexthop_num + api->ifindex_num); | |
865 | ||
866 | for (i = 0; i < api->nexthop_num; i++) { | |
867 | stream_putc(s, NEXTHOP_TYPE_IPV6); | |
868 | stream_write(s, (u_char *)api->nexthop[i], 16); | |
869 | /* For labeled-unicast, each nexthop is followed by | |
870 | * label. */ | |
871 | if (CHECK_FLAG(api->message, ZAPI_MESSAGE_LABEL)) | |
872 | stream_putl(s, api->label[i]); | |
873 | } | |
874 | for (i = 0; i < api->ifindex_num; i++) { | |
875 | stream_putc(s, NEXTHOP_TYPE_IFINDEX); | |
876 | stream_putl(s, api->ifindex[i]); | |
877 | } | |
878 | } | |
718e3744 | 879 | |
d62a17ae | 880 | if (CHECK_FLAG(api->message, ZAPI_MESSAGE_DISTANCE)) |
881 | stream_putc(s, api->distance); | |
882 | if (CHECK_FLAG(api->message, ZAPI_MESSAGE_METRIC)) | |
883 | stream_putl(s, api->metric); | |
884 | if (CHECK_FLAG(api->message, ZAPI_MESSAGE_TAG)) | |
885 | stream_putl(s, api->tag); | |
886 | if (CHECK_FLAG(api->message, ZAPI_MESSAGE_MTU)) | |
887 | stream_putl(s, api->mtu); | |
718e3744 | 888 | |
d62a17ae | 889 | /* Put length at the first point of the stream. */ |
890 | stream_putw_at(s, 0, stream_get_endp(s)); | |
891 | ||
892 | return zclient_send_message(zclient); | |
718e3744 | 893 | } |
718e3744 | 894 | |
d62a17ae | 895 | int zapi_route(u_char cmd, struct zclient *zclient, struct prefix *p, |
896 | struct prefix_ipv6 *src_p, struct zapi_route *api) | |
657cde12 | 897 | { |
d62a17ae | 898 | int i; |
899 | int psize; | |
900 | struct stream *s; | |
901 | ||
902 | /* either we have !SRCPFX && src_p == NULL, or SRCPFX && src_p != NULL | |
903 | */ | |
904 | assert(!(api->message & ZAPI_MESSAGE_SRCPFX) == !src_p); | |
905 | ||
906 | /* Reset stream. */ | |
907 | s = zclient->obuf; | |
908 | stream_reset(s); | |
909 | ||
910 | zclient_create_header(s, cmd, api->vrf_id); | |
911 | ||
912 | /* Put type and nexthop. */ | |
913 | stream_putc(s, api->type); | |
914 | stream_putw(s, api->instance); | |
915 | stream_putl(s, api->flags); | |
916 | stream_putc(s, api->message); | |
917 | stream_putw(s, api->safi); | |
918 | ||
919 | /* Put prefix information. */ | |
920 | psize = PSIZE(p->prefixlen); | |
921 | stream_putc(s, p->prefixlen); | |
922 | stream_write(s, (u_char *)&p->u.prefix, psize); | |
923 | ||
924 | if (CHECK_FLAG(api->message, ZAPI_MESSAGE_SRCPFX)) { | |
925 | psize = PSIZE(src_p->prefixlen); | |
926 | stream_putc(s, src_p->prefixlen); | |
927 | stream_write(s, (u_char *)&src_p->prefix, psize); | |
928 | } | |
929 | ||
930 | /* Nexthop, ifindex, distance and metric information. */ | |
931 | if (CHECK_FLAG(api->message, ZAPI_MESSAGE_NEXTHOP)) { | |
932 | stream_putc(s, api->nexthop_num); | |
933 | ||
934 | for (i = 0; i < api->nexthop_num; i++) { | |
935 | stream_putc(s, api->nexthop[i]->type); | |
936 | switch (api->nexthop[i]->type) { | |
937 | case NEXTHOP_TYPE_BLACKHOLE: | |
938 | break; | |
939 | case NEXTHOP_TYPE_IPV4: | |
940 | stream_put_in_addr(s, | |
941 | &api->nexthop[i]->gate.ipv4); | |
942 | ||
943 | /* For labeled-unicast, each nexthop is followed | |
944 | * by label. */ | |
945 | if (CHECK_FLAG(api->message, | |
946 | ZAPI_MESSAGE_LABEL)) | |
947 | stream_putl( | |
948 | s, | |
949 | api->nexthop[i] | |
950 | ->nh_label->label[0]); | |
951 | break; | |
952 | case NEXTHOP_TYPE_IPV4_IFINDEX: | |
953 | stream_put_in_addr(s, | |
954 | &api->nexthop[i]->gate.ipv4); | |
955 | stream_putl(s, api->nexthop[i]->ifindex); | |
956 | break; | |
957 | case NEXTHOP_TYPE_IFINDEX: | |
958 | stream_putl(s, api->nexthop[i]->ifindex); | |
959 | break; | |
960 | case NEXTHOP_TYPE_IPV6: | |
961 | stream_write( | |
962 | s, | |
963 | (u_char *)&api->nexthop[i]->gate.ipv6, | |
964 | 16); | |
965 | ||
966 | /* For labeled-unicast, each nexthop is followed | |
967 | * by label. */ | |
968 | if (CHECK_FLAG(api->message, | |
969 | ZAPI_MESSAGE_LABEL)) | |
970 | stream_putl( | |
971 | s, | |
972 | api->nexthop[i] | |
973 | ->nh_label->label[0]); | |
974 | break; | |
975 | case NEXTHOP_TYPE_IPV6_IFINDEX: | |
976 | stream_write( | |
977 | s, | |
978 | (u_char *)&api->nexthop[i]->gate.ipv6, | |
979 | 16); | |
980 | stream_putl(s, api->nexthop[i]->ifindex); | |
981 | break; | |
982 | } | |
983 | } | |
984 | } | |
985 | ||
986 | if (CHECK_FLAG(api->message, ZAPI_MESSAGE_DISTANCE)) | |
987 | stream_putc(s, api->distance); | |
988 | if (CHECK_FLAG(api->message, ZAPI_MESSAGE_METRIC)) | |
989 | stream_putl(s, api->metric); | |
990 | if (CHECK_FLAG(api->message, ZAPI_MESSAGE_TAG)) | |
991 | stream_putl(s, api->tag); | |
992 | if (CHECK_FLAG(api->message, ZAPI_MESSAGE_MTU)) | |
993 | stream_putl(s, api->mtu); | |
994 | ||
995 | /* Put length at the first point of the stream. */ | |
996 | stream_putw_at(s, 0, stream_get_endp(s)); | |
997 | ||
998 | return zclient_send_message(zclient); | |
657cde12 DS |
999 | } |
1000 | ||
d62a17ae | 1001 | /* |
0a589359 | 1002 | * send a ZEBRA_REDISTRIBUTE_ADD or ZEBRA_REDISTRIBUTE_DELETE |
1003 | * for the route type (ZEBRA_ROUTE_KERNEL etc.). The zebra server will | |
d62a17ae | 1004 | * then set/unset redist[type] in the client handle (a struct zserv) for the |
0a589359 | 1005 | * sending client |
1006 | */ | |
d62a17ae | 1007 | int zebra_redistribute_send(int command, struct zclient *zclient, afi_t afi, |
1008 | int type, u_short instance, vrf_id_t vrf_id) | |
718e3744 | 1009 | { |
d62a17ae | 1010 | struct stream *s; |
1011 | ||
1012 | s = zclient->obuf; | |
1013 | stream_reset(s); | |
1014 | ||
1015 | zclient_create_header(s, command, vrf_id); | |
1016 | stream_putc(s, afi); | |
1017 | stream_putc(s, type); | |
1018 | stream_putw(s, instance); | |
1019 | ||
1020 | stream_putw_at(s, 0, stream_get_endp(s)); | |
1021 | ||
1022 | return zclient_send_message(zclient); | |
718e3744 | 1023 | } |
1024 | ||
d9178828 | 1025 | /* Get prefix in ZServ format; family should be filled in on prefix */ |
d62a17ae | 1026 | static void zclient_stream_get_prefix(struct stream *s, struct prefix *p) |
d9178828 | 1027 | { |
d62a17ae | 1028 | size_t plen = prefix_blen(p); |
1029 | u_char c; | |
1030 | p->prefixlen = 0; | |
1031 | ||
1032 | if (plen == 0) | |
1033 | return; | |
1034 | ||
1035 | stream_get(&p->u.prefix, s, plen); | |
1036 | c = stream_getc(s); | |
1037 | p->prefixlen = MIN(plen * 8, c); | |
d9178828 PJ |
1038 | } |
1039 | ||
18a6dce6 | 1040 | /* Router-id update from zebra daemon. */ |
d62a17ae | 1041 | void zebra_router_id_update_read(struct stream *s, struct prefix *rid) |
18a6dce6 | 1042 | { |
d62a17ae | 1043 | /* Fetch interface address. */ |
1044 | rid->family = stream_getc(s); | |
1045 | ||
1046 | zclient_stream_get_prefix(s, rid); | |
18a6dce6 | 1047 | } |
1048 | ||
718e3744 | 1049 | /* Interface addition from zebra daemon. */ |
d62a17ae | 1050 | /* |
0a589359 | 1051 | * The format of the message sent with type ZEBRA_INTERFACE_ADD or |
1052 | * ZEBRA_INTERFACE_DELETE from zebra to the client is: | |
1053 | * 0 1 2 3 | |
1054 | * 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 | 1055 | * +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+ |
1056 | * | ifname | | |
1057 | * | | | |
1058 | * | | | |
1059 | * | | | |
1060 | * | | | |
1061 | * +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+ | |
16f1b9ee OD |
1062 | * | ifindex | |
1063 | * +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+ | |
1064 | * | status | | |
0a589359 | 1065 | * +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+ |
16f1b9ee | 1066 | * | if_flags | |
c77d4546 | 1067 | * | | |
0a589359 | 1068 | * +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+ |
16f1b9ee OD |
1069 | * | metric | |
1070 | * +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+ | |
2d7f0d76 DS |
1071 | * | speed | |
1072 | * +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+ | |
16f1b9ee OD |
1073 | * | ifmtu | |
1074 | * +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+ | |
1075 | * | ifmtu6 | | |
1076 | * +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+ | |
1077 | * | bandwidth | | |
1078 | * +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+ | |
1079 | * | Link Layer Type | | |
0a589359 | 1080 | * +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+ |
16f1b9ee | 1081 | * | Harware Address Length | |
0a589359 | 1082 | * +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+ |
16f1b9ee OD |
1083 | * | Hardware Address if HW lenght different from 0 | |
1084 | * | ... max INTERFACE_HWADDR_MAX | | |
0a589359 | 1085 | * +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+ |
16f1b9ee | 1086 | * | Link_params? | Whether a link-params follows: 1 or 0. |
0a589359 | 1087 | * +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+ |
16f1b9ee OD |
1088 | * | Link_params 0 or 1 INTERFACE_LINK_PARAMS_SIZE sized | |
1089 | * | .... (struct if_link_params). | | |
0a589359 | 1090 | * +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+ |
1091 | */ | |
1092 | ||
d62a17ae | 1093 | static void zclient_vrf_add(struct zclient *zclient, vrf_id_t vrf_id) |
1892f15e | 1094 | { |
d62a17ae | 1095 | struct vrf *vrf; |
1096 | char vrfname_tmp[VRF_NAMSIZ]; | |
1097 | struct vrf_data data; | |
1892f15e | 1098 | |
d62a17ae | 1099 | stream_get(&data, zclient->ibuf, sizeof(struct vrf_data)); |
1100 | /* Read interface name. */ | |
1101 | stream_get(vrfname_tmp, zclient->ibuf, VRF_NAMSIZ); | |
1892f15e | 1102 | |
d62a17ae | 1103 | /* Lookup/create vrf by vrf_id. */ |
1104 | vrf = vrf_get(vrf_id, vrfname_tmp); | |
1105 | vrf->data = data; | |
1892f15e | 1106 | |
d62a17ae | 1107 | vrf_enable(vrf); |
1892f15e DS |
1108 | } |
1109 | ||
d62a17ae | 1110 | static void zclient_vrf_delete(struct zclient *zclient, vrf_id_t vrf_id) |
1892f15e | 1111 | { |
d62a17ae | 1112 | struct vrf *vrf; |
1892f15e | 1113 | |
d62a17ae | 1114 | /* Lookup vrf by vrf_id. */ |
1115 | vrf = vrf_lookup_by_id(vrf_id); | |
1892f15e | 1116 | |
d62a17ae | 1117 | /* |
1118 | * If a routing protocol doesn't know about a | |
1119 | * vrf that is about to be deleted. There is | |
1120 | * no point in attempting to delete it. | |
1121 | */ | |
1122 | if (!vrf) | |
1123 | return; | |
beef1990 | 1124 | |
d62a17ae | 1125 | vrf_delete(vrf); |
1892f15e DS |
1126 | } |
1127 | ||
d62a17ae | 1128 | struct interface *zebra_interface_add_read(struct stream *s, vrf_id_t vrf_id) |
718e3744 | 1129 | { |
d62a17ae | 1130 | struct interface *ifp; |
1131 | char ifname_tmp[INTERFACE_NAMSIZ]; | |
718e3744 | 1132 | |
d62a17ae | 1133 | /* Read interface name. */ |
1134 | stream_get(ifname_tmp, s, INTERFACE_NAMSIZ); | |
718e3744 | 1135 | |
d62a17ae | 1136 | /* Lookup/create interface by name. */ |
1137 | ifp = if_get_by_name_len( | |
1138 | ifname_tmp, strnlen(ifname_tmp, INTERFACE_NAMSIZ), vrf_id, 0); | |
718e3744 | 1139 | |
d62a17ae | 1140 | zebra_interface_if_set_value(s, ifp); |
718e3744 | 1141 | |
d62a17ae | 1142 | return ifp; |
718e3744 | 1143 | } |
1144 | ||
d62a17ae | 1145 | /* |
0a589359 | 1146 | * Read interface up/down msg (ZEBRA_INTERFACE_UP/ZEBRA_INTERFACE_DOWN) |
1147 | * from zebra server. The format of this message is the same as | |
1148 | * that sent for ZEBRA_INTERFACE_ADD/ZEBRA_INTERFACE_DELETE (see | |
1149 | * comments for zebra_interface_add_read), except that no sockaddr_dl | |
1150 | * is sent at the tail of the message. | |
1151 | */ | |
d62a17ae | 1152 | struct interface *zebra_interface_state_read(struct stream *s, vrf_id_t vrf_id) |
718e3744 | 1153 | { |
d62a17ae | 1154 | struct interface *ifp; |
1155 | char ifname_tmp[INTERFACE_NAMSIZ]; | |
1156 | ||
1157 | /* Read interface name. */ | |
1158 | stream_get(ifname_tmp, s, INTERFACE_NAMSIZ); | |
1159 | ||
1160 | /* Lookup this by interface index. */ | |
1161 | ifp = if_lookup_by_name_len( | |
1162 | ifname_tmp, strnlen(ifname_tmp, INTERFACE_NAMSIZ), vrf_id); | |
1163 | if (ifp == NULL) { | |
1164 | zlog_warn("INTERFACE_STATE: Cannot find IF %s in VRF %d", | |
1165 | ifname_tmp, vrf_id); | |
1166 | return NULL; | |
1167 | } | |
1168 | ||
1169 | zebra_interface_if_set_value(s, ifp); | |
1170 | ||
1171 | return ifp; | |
718e3744 | 1172 | } |
1173 | ||
d62a17ae | 1174 | static void link_params_set_value(struct stream *s, struct if_link_params *iflp) |
16f1b9ee OD |
1175 | { |
1176 | ||
d62a17ae | 1177 | if (iflp == NULL) |
1178 | return; | |
1179 | ||
1180 | iflp->lp_status = stream_getl(s); | |
1181 | iflp->te_metric = stream_getl(s); | |
1182 | iflp->max_bw = stream_getf(s); | |
1183 | iflp->max_rsv_bw = stream_getf(s); | |
1184 | uint32_t bwclassnum = stream_getl(s); | |
1185 | { | |
1186 | unsigned int i; | |
1187 | for (i = 0; i < bwclassnum && i < MAX_CLASS_TYPE; i++) | |
1188 | iflp->unrsv_bw[i] = stream_getf(s); | |
1189 | if (i < bwclassnum) | |
1190 | zlog_err( | |
1191 | "%s: received %d > %d (MAX_CLASS_TYPE) bw entries" | |
1192 | " - outdated library?", | |
1193 | __func__, bwclassnum, MAX_CLASS_TYPE); | |
1194 | } | |
1195 | iflp->admin_grp = stream_getl(s); | |
1196 | iflp->rmt_as = stream_getl(s); | |
1197 | iflp->rmt_ip.s_addr = stream_get_ipv4(s); | |
1198 | ||
1199 | iflp->av_delay = stream_getl(s); | |
1200 | iflp->min_delay = stream_getl(s); | |
1201 | iflp->max_delay = stream_getl(s); | |
1202 | iflp->delay_var = stream_getl(s); | |
1203 | ||
1204 | iflp->pkt_loss = stream_getf(s); | |
1205 | iflp->res_bw = stream_getf(s); | |
1206 | iflp->ava_bw = stream_getf(s); | |
1207 | iflp->use_bw = stream_getf(s); | |
16f1b9ee OD |
1208 | } |
1209 | ||
d62a17ae | 1210 | struct interface *zebra_interface_link_params_read(struct stream *s) |
16f1b9ee | 1211 | { |
d62a17ae | 1212 | struct if_link_params *iflp; |
1213 | ifindex_t ifindex; | |
c28e5b2a | 1214 | |
d62a17ae | 1215 | assert(s); |
c28e5b2a | 1216 | |
d62a17ae | 1217 | ifindex = stream_getl(s); |
16f1b9ee | 1218 | |
d62a17ae | 1219 | struct interface *ifp = if_lookup_by_index(ifindex, VRF_DEFAULT); |
16f1b9ee | 1220 | |
d62a17ae | 1221 | if (ifp == NULL) { |
1222 | zlog_err("%s: unknown ifindex %u, shouldn't happen", __func__, | |
1223 | ifindex); | |
1224 | return NULL; | |
1225 | } | |
16f1b9ee | 1226 | |
d62a17ae | 1227 | if ((iflp = if_link_params_get(ifp)) == NULL) |
1228 | return NULL; | |
16f1b9ee | 1229 | |
d62a17ae | 1230 | link_params_set_value(s, iflp); |
16f1b9ee | 1231 | |
d62a17ae | 1232 | return ifp; |
16f1b9ee OD |
1233 | } |
1234 | ||
d62a17ae | 1235 | void zebra_interface_if_set_value(struct stream *s, struct interface *ifp) |
16f1b9ee | 1236 | { |
d62a17ae | 1237 | u_char link_params_status = 0; |
1238 | ||
1239 | /* Read interface's index. */ | |
1240 | ifp->ifindex = stream_getl(s); | |
1241 | ifp->status = stream_getc(s); | |
1242 | ||
1243 | /* Read interface's value. */ | |
1244 | ifp->flags = stream_getq(s); | |
1245 | ifp->ptm_enable = stream_getc(s); | |
1246 | ifp->ptm_status = stream_getc(s); | |
1247 | ifp->metric = stream_getl(s); | |
1248 | ifp->speed = stream_getl(s); | |
1249 | ifp->mtu = stream_getl(s); | |
1250 | ifp->mtu6 = stream_getl(s); | |
1251 | ifp->bandwidth = stream_getl(s); | |
1252 | ifp->ll_type = stream_getl(s); | |
1253 | ifp->hw_addr_len = stream_getl(s); | |
1254 | if (ifp->hw_addr_len) | |
1255 | stream_get(ifp->hw_addr, s, | |
1256 | MIN(ifp->hw_addr_len, INTERFACE_HWADDR_MAX)); | |
1257 | ||
1258 | /* Read Traffic Engineering status */ | |
1259 | link_params_status = stream_getc(s); | |
1260 | /* Then, Traffic Engineering parameters if any */ | |
1261 | if (link_params_status) { | |
1262 | struct if_link_params *iflp = if_link_params_get(ifp); | |
1263 | link_params_set_value(s, iflp); | |
1264 | } | |
16f1b9ee OD |
1265 | } |
1266 | ||
d62a17ae | 1267 | size_t zebra_interface_link_params_write(struct stream *s, |
1268 | struct interface *ifp) | |
16f1b9ee | 1269 | { |
d62a17ae | 1270 | size_t w; |
1271 | struct if_link_params *iflp; | |
1272 | int i; | |
16f1b9ee | 1273 | |
d62a17ae | 1274 | if (s == NULL || ifp == NULL || ifp->link_params == NULL) |
1275 | return 0; | |
16f1b9ee | 1276 | |
d62a17ae | 1277 | iflp = ifp->link_params; |
1278 | w = 0; | |
16f1b9ee | 1279 | |
d62a17ae | 1280 | w += stream_putl(s, iflp->lp_status); |
16f1b9ee | 1281 | |
d62a17ae | 1282 | w += stream_putl(s, iflp->te_metric); |
1283 | w += stream_putf(s, iflp->max_bw); | |
1284 | w += stream_putf(s, iflp->max_rsv_bw); | |
16f1b9ee | 1285 | |
d62a17ae | 1286 | w += stream_putl(s, MAX_CLASS_TYPE); |
1287 | for (i = 0; i < MAX_CLASS_TYPE; i++) | |
1288 | w += stream_putf(s, iflp->unrsv_bw[i]); | |
16f1b9ee | 1289 | |
d62a17ae | 1290 | w += stream_putl(s, iflp->admin_grp); |
1291 | w += stream_putl(s, iflp->rmt_as); | |
1292 | w += stream_put_in_addr(s, &iflp->rmt_ip); | |
16f1b9ee | 1293 | |
d62a17ae | 1294 | w += stream_putl(s, iflp->av_delay); |
1295 | w += stream_putl(s, iflp->min_delay); | |
1296 | w += stream_putl(s, iflp->max_delay); | |
1297 | w += stream_putl(s, iflp->delay_var); | |
16f1b9ee | 1298 | |
d62a17ae | 1299 | w += stream_putf(s, iflp->pkt_loss); |
1300 | w += stream_putf(s, iflp->res_bw); | |
1301 | w += stream_putf(s, iflp->ava_bw); | |
1302 | w += stream_putf(s, iflp->use_bw); | |
16f1b9ee | 1303 | |
d62a17ae | 1304 | return w; |
16f1b9ee OD |
1305 | } |
1306 | ||
1307 | /* | |
0a589359 | 1308 | * format of message for address additon is: |
1309 | * 0 | |
1310 | * 0 1 2 3 4 5 6 7 | |
1311 | * +-+-+-+-+-+-+-+-+ | |
1312 | * | type | ZEBRA_INTERFACE_ADDRESS_ADD or | |
1313 | * +-+-+-+-+-+-+-+-+ ZEBRA_INTERFACE_ADDRES_DELETE | |
1314 | * | | | |
1315 | * + + | |
1316 | * | ifindex | | |
1317 | * + + | |
1318 | * | | | |
1319 | * + + | |
1320 | * | | | |
1321 | * +-+-+-+-+-+-+-+-+ | |
1322 | * | ifc_flags | flags for connected address | |
1323 | * +-+-+-+-+-+-+-+-+ | |
1324 | * | addr_family | | |
1325 | * +-+-+-+-+-+-+-+-+ | |
1326 | * | addr... | | |
1327 | * : : | |
1328 | * | | | |
1329 | * +-+-+-+-+-+-+-+-+ | |
1330 | * | addr_len | len of addr. E.g., addr_len = 4 for ipv4 addrs. | |
1331 | * +-+-+-+-+-+-+-+-+ | |
1332 | * | daddr.. | | |
1333 | * : : | |
1334 | * | | | |
1335 | * +-+-+-+-+-+-+-+-+ | |
0a589359 | 1336 | */ |
1337 | ||
d62a17ae | 1338 | static int memconstant(const void *s, int c, size_t n) |
3fb9cd6e | 1339 | { |
d62a17ae | 1340 | const u_char *p = s; |
3fb9cd6e | 1341 | |
d62a17ae | 1342 | while (n-- > 0) |
1343 | if (*p++ != c) | |
1344 | return 0; | |
1345 | return 1; | |
3fb9cd6e | 1346 | } |
1347 | ||
d5a5c8f0 | 1348 | |
d62a17ae | 1349 | struct connected *zebra_interface_address_read(int type, struct stream *s, |
1350 | vrf_id_t vrf_id) | |
718e3744 | 1351 | { |
d62a17ae | 1352 | ifindex_t ifindex; |
1353 | struct interface *ifp; | |
1354 | struct connected *ifc; | |
1355 | struct prefix p, d, *dp; | |
1356 | int plen; | |
1357 | u_char ifc_flags; | |
1358 | ||
1359 | memset(&p, 0, sizeof(p)); | |
1360 | memset(&d, 0, sizeof(d)); | |
1361 | ||
1362 | /* Get interface index. */ | |
1363 | ifindex = stream_getl(s); | |
1364 | ||
1365 | /* Lookup index. */ | |
1366 | ifp = if_lookup_by_index(ifindex, vrf_id); | |
1367 | if (ifp == NULL) { | |
1368 | zlog_warn("INTERFACE_ADDRESS_%s: Cannot find IF %u in VRF %d", | |
1369 | (type == ZEBRA_INTERFACE_ADDRESS_ADD) ? "ADD" : "DEL", | |
1370 | ifindex, vrf_id); | |
1371 | return NULL; | |
1372 | } | |
1373 | ||
1374 | /* Fetch flag. */ | |
1375 | ifc_flags = stream_getc(s); | |
1376 | ||
1377 | /* Fetch interface address. */ | |
1378 | d.family = p.family = stream_getc(s); | |
1379 | plen = prefix_blen(&d); | |
1380 | ||
1381 | zclient_stream_get_prefix(s, &p); | |
1382 | ||
1383 | /* Fetch destination address. */ | |
1384 | stream_get(&d.u.prefix, s, plen); | |
1385 | ||
1386 | /* N.B. NULL destination pointers are encoded as all zeroes */ | |
1387 | dp = memconstant(&d.u.prefix, 0, plen) ? NULL : &d; | |
1388 | ||
1389 | if (type == ZEBRA_INTERFACE_ADDRESS_ADD) { | |
1390 | ifc = connected_lookup_prefix_exact(ifp, &p); | |
1391 | if (!ifc) { | |
1392 | /* N.B. NULL destination pointers are encoded as all | |
1393 | * zeroes */ | |
1394 | ifc = connected_add_by_prefix(ifp, &p, dp); | |
1395 | } | |
1396 | if (ifc) { | |
1397 | ifc->flags = ifc_flags; | |
1398 | if (ifc->destination) | |
1399 | ifc->destination->prefixlen = | |
1400 | ifc->address->prefixlen; | |
1401 | else if (CHECK_FLAG(ifc->flags, ZEBRA_IFA_PEER)) { | |
1402 | /* carp interfaces on OpenBSD with 0.0.0.0/0 as | |
1403 | * "peer" */ | |
1404 | char buf[PREFIX_STRLEN]; | |
1405 | zlog_warn( | |
1406 | "warning: interface %s address %s " | |
1407 | "with peer flag set, but no peer address!", | |
9d303b37 DL |
1408 | ifp->name, prefix2str(ifc->address, buf, |
1409 | sizeof buf)); | |
d62a17ae | 1410 | UNSET_FLAG(ifc->flags, ZEBRA_IFA_PEER); |
1411 | } | |
1412 | } | |
1413 | } else { | |
1414 | assert(type == ZEBRA_INTERFACE_ADDRESS_DELETE); | |
1415 | ifc = connected_delete_by_prefix(ifp, &p); | |
1416 | } | |
1417 | ||
1418 | return ifc; | |
718e3744 | 1419 | } |
0a589359 | 1420 | |
a80beece DS |
1421 | /* |
1422 | * format of message for neighbor connected address is: | |
1423 | * 0 | |
1424 | * 0 1 2 3 4 5 6 7 | |
1425 | * +-+-+-+-+-+-+-+-+ | |
1426 | * | type | ZEBRA_INTERFACE_NBR_ADDRESS_ADD or | |
1427 | * +-+-+-+-+-+-+-+-+ ZEBRA_INTERFACE_NBR_ADDRES_DELETE | |
1428 | * | | | |
1429 | * + + | |
1430 | * | ifindex | | |
1431 | * + + | |
1432 | * | | | |
1433 | * + + | |
1434 | * | | | |
1435 | * +-+-+-+-+-+-+-+-+ | |
1436 | * | addr_family | | |
1437 | * +-+-+-+-+-+-+-+-+ | |
1438 | * | addr... | | |
1439 | * : : | |
1440 | * | | | |
1441 | * +-+-+-+-+-+-+-+-+ | |
1442 | * | addr_len | len of addr. | |
1443 | * +-+-+-+-+-+-+-+-+ | |
1444 | */ | |
1445 | struct nbr_connected * | |
d62a17ae | 1446 | zebra_interface_nbr_address_read(int type, struct stream *s, vrf_id_t vrf_id) |
a80beece | 1447 | { |
d62a17ae | 1448 | unsigned int ifindex; |
1449 | struct interface *ifp; | |
1450 | struct prefix p; | |
1451 | struct nbr_connected *ifc; | |
1452 | ||
1453 | /* Get interface index. */ | |
1454 | ifindex = stream_getl(s); | |
1455 | ||
1456 | /* Lookup index. */ | |
1457 | ifp = if_lookup_by_index(ifindex, vrf_id); | |
1458 | if (ifp == NULL) { | |
1459 | zlog_warn("INTERFACE_NBR_%s: Cannot find IF %u in VRF %d", | |
1460 | (type == ZEBRA_INTERFACE_NBR_ADDRESS_ADD) ? "ADD" | |
1461 | : "DELETE", | |
1462 | ifindex, vrf_id); | |
1463 | return NULL; | |
1464 | } | |
1465 | ||
1466 | p.family = stream_getc(s); | |
1467 | stream_get(&p.u.prefix, s, prefix_blen(&p)); | |
1468 | p.prefixlen = stream_getc(s); | |
1469 | ||
1470 | if (type == ZEBRA_INTERFACE_NBR_ADDRESS_ADD) { | |
1471 | /* Currently only supporting P2P links, so any new RA source | |
1472 | address is | |
1473 | considered as the replacement of the previously learnt | |
1474 | Link-Local address. */ | |
1475 | if (!(ifc = listnode_head(ifp->nbr_connected))) { | |
1476 | ifc = nbr_connected_new(); | |
1477 | ifc->address = prefix_new(); | |
1478 | ifc->ifp = ifp; | |
1479 | listnode_add(ifp->nbr_connected, ifc); | |
1480 | } | |
1481 | ||
1482 | prefix_copy(ifc->address, &p); | |
1483 | } else { | |
1484 | assert(type == ZEBRA_INTERFACE_NBR_ADDRESS_DELETE); | |
1485 | ||
1486 | ifc = nbr_connected_check(ifp, &p); | |
1487 | if (ifc) | |
1488 | listnode_delete(ifp->nbr_connected, ifc); | |
1489 | } | |
1490 | ||
1491 | return ifc; | |
a80beece | 1492 | } |
6b0655a2 | 1493 | |
d62a17ae | 1494 | struct interface *zebra_interface_vrf_update_read(struct stream *s, |
1495 | vrf_id_t vrf_id, | |
1496 | vrf_id_t *new_vrf_id) | |
c8e264b6 | 1497 | { |
d62a17ae | 1498 | unsigned int ifindex; |
1499 | struct interface *ifp; | |
1500 | vrf_id_t new_id = VRF_DEFAULT; | |
1501 | ||
1502 | /* Get interface index. */ | |
1503 | ifindex = stream_getl(s); | |
1504 | ||
1505 | /* Lookup interface. */ | |
1506 | ifp = if_lookup_by_index(ifindex, vrf_id); | |
1507 | if (ifp == NULL) { | |
1508 | zlog_warn("INTERFACE_VRF_UPDATE: Cannot find IF %u in VRF %d", | |
1509 | ifindex, vrf_id); | |
1510 | return NULL; | |
1511 | } | |
1512 | ||
1513 | /* Fetch new VRF Id. */ | |
1514 | new_id = stream_getw(s); | |
1515 | ||
1516 | *new_vrf_id = new_id; | |
1517 | return ifp; | |
c8e264b6 | 1518 | } |
5c7ef8dc | 1519 | |
1520 | /* filter unwanted messages until the expected one arrives */ | |
d62a17ae | 1521 | static int zclient_read_sync_response(struct zclient *zclient, |
1522 | u_int16_t expected_cmd) | |
5c7ef8dc | 1523 | { |
d62a17ae | 1524 | struct stream *s; |
1525 | u_int16_t size; | |
1526 | u_char marker; | |
1527 | u_char version; | |
1528 | vrf_id_t vrf_id; | |
1529 | u_int16_t cmd; | |
1530 | fd_set readfds; | |
1531 | int ret; | |
1532 | ||
1533 | ret = 0; | |
1534 | cmd = expected_cmd + 1; | |
1535 | while (ret == 0 && cmd != expected_cmd) { | |
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, | |
1547 | &version, &vrf_id, &cmd); | |
1548 | if (zclient_debug) | |
1549 | zlog_debug("%s: Response (%d bytes) received", __func__, | |
1550 | size); | |
1551 | } | |
1552 | if (ret != 0) { | |
1553 | zlog_err("%s: Invalid Sync Message Reply", __func__); | |
1554 | return -1; | |
1555 | } | |
1556 | ||
1557 | return 0; | |
5c7ef8dc | 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 | */ | |
d62a17ae | 1568 | int lm_label_manager_connect(struct zclient *zclient) |
fea12efb | 1569 | { |
d62a17ae | 1570 | int ret; |
1571 | struct stream *s; | |
1572 | u_char result; | |
1573 | ||
1574 | if (zclient_debug) | |
1575 | zlog_debug("Connecting to Label Manager"); | |
1576 | ||
1577 | if (zclient->sock < 0) | |
1578 | return -1; | |
1579 | ||
1580 | /* send request */ | |
1581 | s = zclient->obuf; | |
1582 | stream_reset(s); | |
1583 | zclient_create_header(s, ZEBRA_LABEL_MANAGER_CONNECT, VRF_DEFAULT); | |
1584 | ||
1585 | /* proto */ | |
1586 | stream_putc(s, zclient->redist_default); | |
1587 | /* instance */ | |
1588 | stream_putw(s, zclient->instance); | |
1589 | ||
1590 | /* Put length at the first point of the stream. */ | |
1591 | stream_putw_at(s, 0, stream_get_endp(s)); | |
1592 | ||
1593 | ret = writen(zclient->sock, s->data, stream_get_endp(s)); | |
1594 | if (ret < 0) { | |
1595 | zlog_err("%s: can't write to zclient->sock", __func__); | |
1596 | close(zclient->sock); | |
1597 | zclient->sock = -1; | |
1598 | return -1; | |
1599 | } | |
1600 | if (ret == 0) { | |
1601 | zlog_err("%s: zclient->sock connection closed", __func__); | |
1602 | close(zclient->sock); | |
1603 | zclient->sock = -1; | |
1604 | return -1; | |
1605 | } | |
1606 | if (zclient_debug) | |
1607 | zlog_debug("%s: Label manager connect request (%d bytes) sent", | |
1608 | __func__, ret); | |
1609 | ||
1610 | /* read response */ | |
1611 | if (zclient_read_sync_response(zclient, ZEBRA_LABEL_MANAGER_CONNECT) | |
1612 | != 0) | |
1613 | return -1; | |
1614 | ||
1615 | /* result */ | |
1616 | s = zclient->ibuf; | |
1617 | result = stream_getc(s); | |
1618 | if (zclient_debug) | |
1619 | zlog_debug( | |
1620 | "%s: Label Manager connect response received, result %u", | |
1621 | __func__, result); | |
1622 | ||
1623 | return (int)result; | |
fea12efb | 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 | */ | |
d62a17ae | 1639 | int lm_get_label_chunk(struct zclient *zclient, u_char keep, |
1640 | uint32_t chunk_size, uint32_t *start, uint32_t *end) | |
fea12efb | 1641 | { |
d62a17ae | 1642 | int ret; |
1643 | struct stream *s; | |
1644 | u_char response_keep; | |
1645 | ||
1646 | if (zclient_debug) | |
1647 | zlog_debug("Getting Label Chunk"); | |
1648 | ||
1649 | if (zclient->sock < 0) | |
1650 | return -1; | |
1651 | ||
1652 | /* send request */ | |
1653 | s = zclient->obuf; | |
1654 | stream_reset(s); | |
1655 | zclient_create_header(s, ZEBRA_GET_LABEL_CHUNK, VRF_DEFAULT); | |
1656 | /* keep */ | |
1657 | stream_putc(s, keep); | |
1658 | /* chunk size */ | |
1659 | stream_putl(s, chunk_size); | |
1660 | /* Put length at the first point of the stream. */ | |
1661 | stream_putw_at(s, 0, stream_get_endp(s)); | |
1662 | ||
1663 | ret = writen(zclient->sock, s->data, stream_get_endp(s)); | |
1664 | if (ret < 0) { | |
1665 | zlog_err("%s: can't write to zclient->sock", __func__); | |
1666 | close(zclient->sock); | |
1667 | zclient->sock = -1; | |
1668 | return -1; | |
1669 | } | |
1670 | if (ret == 0) { | |
1671 | zlog_err("%s: zclient->sock connection closed", __func__); | |
1672 | close(zclient->sock); | |
1673 | zclient->sock = -1; | |
1674 | return -1; | |
1675 | } | |
1676 | if (zclient_debug) | |
1677 | zlog_debug("%s: Label chunk request (%d bytes) sent", __func__, | |
1678 | ret); | |
1679 | ||
1680 | /* read response */ | |
1681 | if (zclient_read_sync_response(zclient, ZEBRA_GET_LABEL_CHUNK) != 0) | |
1682 | return -1; | |
1683 | ||
1684 | s = zclient->ibuf; | |
1685 | /* keep */ | |
1686 | response_keep = stream_getc(s); | |
1687 | /* start and end labels */ | |
1688 | *start = stream_getl(s); | |
1689 | *end = stream_getl(s); | |
1690 | ||
1691 | /* not owning this response */ | |
1692 | if (keep != response_keep) { | |
1693 | zlog_err( | |
1694 | "%s: Invalid Label chunk: %u - %u, keeps mismatch %u != %u", | |
1695 | __func__, *start, *end, keep, response_keep); | |
1696 | } | |
1697 | /* sanity */ | |
1698 | if (*start > *end || *start < MPLS_MIN_UNRESERVED_LABEL | |
1699 | || *end > MPLS_MAX_UNRESERVED_LABEL) { | |
1700 | zlog_err("%s: Invalid Label chunk: %u - %u", __func__, *start, | |
1701 | *end); | |
1702 | return -1; | |
1703 | } | |
1704 | ||
1705 | if (zclient_debug) | |
1706 | zlog_debug("Label Chunk assign: %u - %u (%u) ", *start, *end, | |
1707 | response_keep); | |
1708 | ||
1709 | return 0; | |
fea12efb | 1710 | } |
1711 | ||
1712 | /** | |
1713 | * Function to release a label chunk | |
1714 | * | |
1715 | * @param zclient Zclient used to connect to label manager (zebra) | |
1716 | * @param start First label of chunk | |
1717 | * @param end Last label of chunk | |
1718 | * @result 0 on success, -1 otherwise | |
1719 | */ | |
d62a17ae | 1720 | int lm_release_label_chunk(struct zclient *zclient, uint32_t start, |
1721 | uint32_t end) | |
fea12efb | 1722 | { |
d62a17ae | 1723 | int ret; |
1724 | struct stream *s; | |
1725 | ||
1726 | if (zclient_debug) | |
1727 | zlog_debug("Releasing Label Chunk"); | |
1728 | ||
1729 | if (zclient->sock < 0) | |
1730 | return -1; | |
1731 | ||
1732 | /* send request */ | |
1733 | s = zclient->obuf; | |
1734 | stream_reset(s); | |
1735 | zclient_create_header(s, ZEBRA_RELEASE_LABEL_CHUNK, VRF_DEFAULT); | |
1736 | ||
1737 | /* start */ | |
1738 | stream_putl(s, start); | |
1739 | /* end */ | |
1740 | stream_putl(s, end); | |
1741 | ||
1742 | /* Put length at the first point of the stream. */ | |
1743 | stream_putw_at(s, 0, stream_get_endp(s)); | |
1744 | ||
1745 | ret = writen(zclient->sock, s->data, stream_get_endp(s)); | |
1746 | if (ret < 0) { | |
1747 | zlog_err("%s: can't write to zclient->sock", __func__); | |
1748 | close(zclient->sock); | |
1749 | zclient->sock = -1; | |
1750 | return -1; | |
1751 | } | |
1752 | if (ret == 0) { | |
1753 | zlog_err("%s: zclient->sock connection closed", __func__); | |
1754 | close(zclient->sock); | |
1755 | zclient->sock = -1; | |
1756 | return -1; | |
1757 | } | |
1758 | ||
1759 | return 0; | |
fea12efb | 1760 | } |
c8e264b6 | 1761 | |
6833ae01 | 1762 | int zebra_send_pw(struct zclient *zclient, int command, struct zapi_pw *pw) |
1763 | { | |
1764 | struct stream *s; | |
1765 | ||
1766 | /* Reset stream. */ | |
1767 | s = zclient->obuf; | |
1768 | stream_reset(s); | |
1769 | ||
1770 | zclient_create_header(s, command, VRF_DEFAULT); | |
1771 | stream_write(s, pw->ifname, IF_NAMESIZE); | |
1772 | stream_putl(s, pw->ifindex); | |
1773 | ||
1774 | /* Put type */ | |
1775 | stream_putl(s, pw->type); | |
1776 | ||
1777 | /* Put nexthop */ | |
1778 | stream_putl(s, pw->af); | |
1779 | switch (pw->af) { | |
1780 | case AF_INET: | |
1781 | stream_put_in_addr(s, &pw->nexthop.ipv4); | |
1782 | break; | |
1783 | case AF_INET6: | |
1784 | stream_write(s, (u_char *)&pw->nexthop.ipv6, 16); | |
1785 | break; | |
1786 | default: | |
1787 | zlog_err("%s: unknown af", __func__); | |
1788 | return -1; | |
1789 | } | |
1790 | ||
1791 | /* Put labels */ | |
1792 | stream_putl(s, pw->local_label); | |
1793 | stream_putl(s, pw->remote_label); | |
1794 | ||
1795 | /* Put flags */ | |
1796 | stream_putc(s, pw->flags); | |
1797 | ||
1798 | /* Protocol specific fields */ | |
1799 | stream_write(s, &pw->data, sizeof(union pw_protocol_fields)); | |
1800 | ||
1801 | /* Put length at the first point of the stream. */ | |
1802 | stream_putw_at(s, 0, stream_get_endp(s)); | |
1803 | ||
1804 | return zclient_send_message(zclient); | |
1805 | } | |
1806 | ||
1807 | /* | |
1808 | * Receive PW status update from Zebra and send it to LDE process. | |
1809 | */ | |
1810 | void zebra_read_pw_status_update(int command, struct zclient *zclient, | |
1811 | zebra_size_t length, vrf_id_t vrf_id, | |
1812 | struct zapi_pw_status *pw) | |
1813 | { | |
1814 | struct stream *s; | |
1815 | ||
1816 | memset(pw, 0, sizeof(struct zapi_pw_status)); | |
1817 | s = zclient->ibuf; | |
1818 | ||
1819 | /* Get data. */ | |
1820 | stream_get(pw->ifname, s, IF_NAMESIZE); | |
1821 | pw->ifindex = stream_getl(s); | |
1822 | pw->status = stream_getl(s); | |
1823 | } | |
1824 | ||
718e3744 | 1825 | /* Zebra client message read function. */ |
d62a17ae | 1826 | static int zclient_read(struct thread *thread) |
718e3744 | 1827 | { |
d62a17ae | 1828 | size_t already; |
1829 | uint16_t length, command; | |
1830 | uint8_t marker, version; | |
1831 | vrf_id_t vrf_id; | |
1832 | struct zclient *zclient; | |
1833 | ||
1834 | /* Get socket to zebra. */ | |
1835 | zclient = THREAD_ARG(thread); | |
1836 | zclient->t_read = NULL; | |
1837 | ||
1838 | /* Read zebra header (if we don't have it already). */ | |
1839 | if ((already = stream_get_endp(zclient->ibuf)) < ZEBRA_HEADER_SIZE) { | |
1840 | ssize_t nbyte; | |
1841 | if (((nbyte = stream_read_try(zclient->ibuf, zclient->sock, | |
1842 | ZEBRA_HEADER_SIZE - already)) | |
1843 | == 0) | |
1844 | || (nbyte == -1)) { | |
1845 | if (zclient_debug) | |
1846 | zlog_debug( | |
1847 | "zclient connection closed socket [%d].", | |
1848 | zclient->sock); | |
1849 | return zclient_failed(zclient); | |
1850 | } | |
1851 | if (nbyte != (ssize_t)(ZEBRA_HEADER_SIZE - already)) { | |
1852 | /* Try again later. */ | |
1853 | zclient_event(ZCLIENT_READ, zclient); | |
1854 | return 0; | |
1855 | } | |
1856 | already = ZEBRA_HEADER_SIZE; | |
634f9ea2 | 1857 | } |
d62a17ae | 1858 | |
1859 | /* Reset to read from the beginning of the incoming packet. */ | |
1860 | stream_set_getp(zclient->ibuf, 0); | |
1861 | ||
1862 | /* Fetch header values. */ | |
1863 | length = stream_getw(zclient->ibuf); | |
1864 | marker = stream_getc(zclient->ibuf); | |
1865 | version = stream_getc(zclient->ibuf); | |
1866 | vrf_id = stream_getw(zclient->ibuf); | |
1867 | command = stream_getw(zclient->ibuf); | |
1868 | ||
1869 | if (marker != ZEBRA_HEADER_MARKER || version != ZSERV_VERSION) { | |
1870 | zlog_err( | |
1871 | "%s: socket %d version mismatch, marker %d, version %d", | |
1872 | __func__, zclient->sock, marker, version); | |
1873 | return zclient_failed(zclient); | |
634f9ea2 | 1874 | } |
d62a17ae | 1875 | |
1876 | if (length < ZEBRA_HEADER_SIZE) { | |
1877 | zlog_err("%s: socket %d message length %u is less than %d ", | |
1878 | __func__, zclient->sock, length, ZEBRA_HEADER_SIZE); | |
1879 | return zclient_failed(zclient); | |
634f9ea2 | 1880 | } |
d62a17ae | 1881 | |
1882 | /* Length check. */ | |
1883 | if (length > STREAM_SIZE(zclient->ibuf)) { | |
1884 | struct stream *ns; | |
1885 | zlog_warn( | |
1886 | "%s: message size %u exceeds buffer size %lu, expanding...", | |
1887 | __func__, length, (u_long)STREAM_SIZE(zclient->ibuf)); | |
1888 | ns = stream_new(length); | |
1889 | stream_copy(ns, zclient->ibuf); | |
1890 | stream_free(zclient->ibuf); | |
1891 | zclient->ibuf = ns; | |
1892 | } | |
1893 | ||
1894 | /* Read rest of zebra packet. */ | |
1895 | if (already < length) { | |
1896 | ssize_t nbyte; | |
1897 | if (((nbyte = stream_read_try(zclient->ibuf, zclient->sock, | |
1898 | length - already)) | |
1899 | == 0) | |
1900 | || (nbyte == -1)) { | |
1901 | if (zclient_debug) | |
1902 | zlog_debug( | |
1903 | "zclient connection closed socket [%d].", | |
1904 | zclient->sock); | |
1905 | return zclient_failed(zclient); | |
1906 | } | |
1907 | if (nbyte != (ssize_t)(length - already)) { | |
1908 | /* Try again later. */ | |
1909 | zclient_event(ZCLIENT_READ, zclient); | |
1910 | return 0; | |
1911 | } | |
1912 | } | |
1913 | ||
1914 | length -= ZEBRA_HEADER_SIZE; | |
1915 | ||
1916 | if (zclient_debug) | |
1917 | zlog_debug("zclient 0x%p command 0x%x VRF %u\n", | |
1918 | (void *)zclient, command, vrf_id); | |
1919 | ||
1920 | switch (command) { | |
1921 | case ZEBRA_ROUTER_ID_UPDATE: | |
1922 | if (zclient->router_id_update) | |
1923 | (*zclient->router_id_update)(command, zclient, length, | |
1924 | vrf_id); | |
1925 | break; | |
1926 | case ZEBRA_VRF_ADD: | |
1927 | zclient_vrf_add(zclient, vrf_id); | |
1928 | break; | |
1929 | case ZEBRA_VRF_DELETE: | |
1930 | zclient_vrf_delete(zclient, vrf_id); | |
1931 | break; | |
1932 | case ZEBRA_INTERFACE_ADD: | |
1933 | if (zclient->interface_add) | |
1934 | (*zclient->interface_add)(command, zclient, length, | |
1935 | vrf_id); | |
1936 | break; | |
1937 | case ZEBRA_INTERFACE_DELETE: | |
1938 | if (zclient->interface_delete) | |
1939 | (*zclient->interface_delete)(command, zclient, length, | |
1940 | vrf_id); | |
1941 | break; | |
1942 | case ZEBRA_INTERFACE_ADDRESS_ADD: | |
1943 | if (zclient->interface_address_add) | |
1944 | (*zclient->interface_address_add)(command, zclient, | |
1945 | length, vrf_id); | |
1946 | break; | |
1947 | case ZEBRA_INTERFACE_ADDRESS_DELETE: | |
1948 | if (zclient->interface_address_delete) | |
1949 | (*zclient->interface_address_delete)(command, zclient, | |
1950 | length, vrf_id); | |
1951 | break; | |
1952 | case ZEBRA_INTERFACE_BFD_DEST_UPDATE: | |
1953 | if (zclient->interface_bfd_dest_update) | |
1954 | (*zclient->interface_bfd_dest_update)(command, zclient, | |
1955 | length, vrf_id); | |
1956 | break; | |
1957 | case ZEBRA_INTERFACE_NBR_ADDRESS_ADD: | |
1958 | if (zclient->interface_nbr_address_add) | |
1959 | (*zclient->interface_nbr_address_add)(command, zclient, | |
1960 | length, vrf_id); | |
1961 | break; | |
1962 | case ZEBRA_INTERFACE_NBR_ADDRESS_DELETE: | |
1963 | if (zclient->interface_nbr_address_delete) | |
1964 | (*zclient->interface_nbr_address_delete)( | |
1965 | command, zclient, length, vrf_id); | |
1966 | break; | |
1967 | case ZEBRA_INTERFACE_UP: | |
1968 | if (zclient->interface_up) | |
1969 | (*zclient->interface_up)(command, zclient, length, | |
1970 | vrf_id); | |
1971 | break; | |
1972 | case ZEBRA_INTERFACE_DOWN: | |
1973 | if (zclient->interface_down) | |
1974 | (*zclient->interface_down)(command, zclient, length, | |
1975 | vrf_id); | |
1976 | break; | |
1977 | case ZEBRA_INTERFACE_VRF_UPDATE: | |
1978 | if (zclient->interface_vrf_update) | |
1979 | (*zclient->interface_vrf_update)(command, zclient, | |
1980 | length, vrf_id); | |
1981 | break; | |
1982 | case ZEBRA_NEXTHOP_UPDATE: | |
1983 | if (zclient_debug) | |
1984 | zlog_debug("zclient rcvd nexthop update\n"); | |
1985 | if (zclient->nexthop_update) | |
1986 | (*zclient->nexthop_update)(command, zclient, length, | |
1987 | vrf_id); | |
1988 | break; | |
1989 | case ZEBRA_IMPORT_CHECK_UPDATE: | |
1990 | if (zclient_debug) | |
1991 | zlog_debug("zclient rcvd import check update\n"); | |
1992 | if (zclient->import_check_update) | |
1993 | (*zclient->import_check_update)(command, zclient, | |
1994 | length, vrf_id); | |
1995 | break; | |
1996 | case ZEBRA_BFD_DEST_REPLAY: | |
1997 | if (zclient->bfd_dest_replay) | |
1998 | (*zclient->bfd_dest_replay)(command, zclient, length, | |
1999 | vrf_id); | |
2000 | break; | |
2001 | case ZEBRA_REDISTRIBUTE_IPV4_ADD: | |
2002 | if (zclient->redistribute_route_ipv4_add) | |
2003 | (*zclient->redistribute_route_ipv4_add)( | |
2004 | command, zclient, length, vrf_id); | |
2005 | break; | |
2006 | case ZEBRA_REDISTRIBUTE_IPV4_DEL: | |
2007 | if (zclient->redistribute_route_ipv4_del) | |
2008 | (*zclient->redistribute_route_ipv4_del)( | |
2009 | command, zclient, length, vrf_id); | |
2010 | break; | |
2011 | case ZEBRA_REDISTRIBUTE_IPV6_ADD: | |
2012 | if (zclient->redistribute_route_ipv6_add) | |
2013 | (*zclient->redistribute_route_ipv6_add)( | |
2014 | command, zclient, length, vrf_id); | |
2015 | break; | |
2016 | case ZEBRA_REDISTRIBUTE_IPV6_DEL: | |
2017 | if (zclient->redistribute_route_ipv6_del) | |
2018 | (*zclient->redistribute_route_ipv6_del)( | |
2019 | command, zclient, length, vrf_id); | |
2020 | break; | |
2021 | case ZEBRA_INTERFACE_LINK_PARAMS: | |
2022 | if (zclient->interface_link_params) | |
2023 | (*zclient->interface_link_params)(command, zclient, | |
2024 | length); | |
2025 | break; | |
2026 | case ZEBRA_FEC_UPDATE: | |
2027 | if (zclient_debug) | |
2028 | zlog_debug("zclient rcvd fec update\n"); | |
2029 | if (zclient->fec_update) | |
2030 | (*zclient->fec_update)(command, zclient, length); | |
2031 | break; | |
2032 | case ZEBRA_VNI_ADD: | |
2033 | if (zclient->local_vni_add) | |
2034 | (*zclient->local_vni_add)(command, zclient, length, | |
2035 | vrf_id); | |
2036 | break; | |
2037 | case ZEBRA_VNI_DEL: | |
2038 | if (zclient->local_vni_del) | |
2039 | (*zclient->local_vni_del)(command, zclient, length, | |
2040 | vrf_id); | |
2041 | break; | |
2042 | case ZEBRA_MACIP_ADD: | |
2043 | if (zclient->local_macip_add) | |
2044 | (*zclient->local_macip_add)(command, zclient, length, | |
2045 | vrf_id); | |
2046 | break; | |
2047 | case ZEBRA_MACIP_DEL: | |
2048 | if (zclient->local_macip_del) | |
2049 | (*zclient->local_macip_del)(command, zclient, length, | |
2050 | vrf_id); | |
2051 | break; | |
6833ae01 | 2052 | case ZEBRA_PW_STATUS_UPDATE: |
2053 | if (zclient->pw_status_update) | |
2054 | (*zclient->pw_status_update)(command, zclient, length, | |
2055 | vrf_id); | |
2056 | break; | |
d62a17ae | 2057 | default: |
2058 | break; | |
634f9ea2 | 2059 | } |
d62a17ae | 2060 | |
2061 | if (zclient->sock < 0) | |
2062 | /* Connection was closed during packet processing. */ | |
2063 | return -1; | |
2064 | ||
2065 | /* Register read thread. */ | |
2066 | stream_reset(zclient->ibuf); | |
2067 | zclient_event(ZCLIENT_READ, zclient); | |
2068 | ||
2069 | return 0; | |
718e3744 | 2070 | } |
2071 | ||
d62a17ae | 2072 | void zclient_redistribute(int command, struct zclient *zclient, afi_t afi, |
2073 | int type, u_short instance, vrf_id_t vrf_id) | |
718e3744 | 2074 | { |
718e3744 | 2075 | |
d62a17ae | 2076 | if (instance) { |
2077 | if (command == ZEBRA_REDISTRIBUTE_ADD) { | |
2078 | if (redist_check_instance( | |
2079 | &zclient->mi_redist[afi][type], instance)) | |
2080 | return; | |
2081 | redist_add_instance(&zclient->mi_redist[afi][type], | |
2082 | instance); | |
2083 | } else { | |
2084 | if (!redist_check_instance( | |
2085 | &zclient->mi_redist[afi][type], instance)) | |
2086 | return; | |
2087 | redist_del_instance(&zclient->mi_redist[afi][type], | |
2088 | instance); | |
2089 | } | |
2090 | ||
2091 | } else { | |
2092 | if (command == ZEBRA_REDISTRIBUTE_ADD) { | |
2093 | if (vrf_bitmap_check(zclient->redist[afi][type], | |
2094 | vrf_id)) | |
2095 | return; | |
2096 | vrf_bitmap_set(zclient->redist[afi][type], vrf_id); | |
2097 | } else { | |
2098 | if (!vrf_bitmap_check(zclient->redist[afi][type], | |
2099 | vrf_id)) | |
2100 | return; | |
2101 | vrf_bitmap_unset(zclient->redist[afi][type], vrf_id); | |
2102 | } | |
2103 | } | |
2104 | ||
2105 | if (zclient->sock > 0) | |
2106 | zebra_redistribute_send(command, zclient, afi, type, instance, | |
2107 | vrf_id); | |
718e3744 | 2108 | } |
2109 | ||
718e3744 | 2110 | |
d62a17ae | 2111 | void zclient_redistribute_default(int command, struct zclient *zclient, |
2112 | vrf_id_t vrf_id) | |
718e3744 | 2113 | { |
718e3744 | 2114 | |
d62a17ae | 2115 | if (command == ZEBRA_REDISTRIBUTE_DEFAULT_ADD) { |
2116 | if (vrf_bitmap_check(zclient->default_information, vrf_id)) | |
2117 | return; | |
2118 | vrf_bitmap_set(zclient->default_information, vrf_id); | |
2119 | } else { | |
2120 | if (!vrf_bitmap_check(zclient->default_information, vrf_id)) | |
2121 | return; | |
2122 | vrf_bitmap_unset(zclient->default_information, vrf_id); | |
2123 | } | |
2124 | ||
2125 | if (zclient->sock > 0) | |
2126 | zebra_message_send(zclient, command, vrf_id); | |
718e3744 | 2127 | } |
2128 | ||
d62a17ae | 2129 | static void zclient_event(enum event event, struct zclient *zclient) |
718e3744 | 2130 | { |
d62a17ae | 2131 | switch (event) { |
2132 | case ZCLIENT_SCHEDULE: | |
2133 | thread_add_event(zclient->master, zclient_connect, zclient, 0, | |
2134 | &zclient->t_connect); | |
2135 | break; | |
2136 | case ZCLIENT_CONNECT: | |
2137 | if (zclient_debug) | |
2138 | zlog_debug( | |
2139 | "zclient connect failures: %d schedule interval is now %d", | |
2140 | zclient->fail, zclient->fail < 3 ? 10 : 60); | |
2141 | thread_add_timer(zclient->master, zclient_connect, zclient, | |
2142 | zclient->fail < 3 ? 10 : 60, | |
2143 | &zclient->t_connect); | |
2144 | break; | |
2145 | case ZCLIENT_READ: | |
2146 | zclient->t_read = NULL; | |
2147 | thread_add_read(zclient->master, zclient_read, zclient, | |
2148 | zclient->sock, &zclient->t_read); | |
2149 | break; | |
2150 | } | |
718e3744 | 2151 | } |
b5114685 | 2152 | |
e0ae31b8 DS |
2153 | void zclient_interface_set_master(struct zclient *client, |
2154 | struct interface *master, | |
2155 | struct interface *slave) | |
2156 | { | |
2157 | struct stream *s; | |
2158 | ||
2159 | s = client->obuf; | |
2160 | stream_reset(s); | |
2161 | ||
2162 | zclient_create_header(s, ZEBRA_INTERFACE_SET_MASTER, master->vrf_id); | |
2163 | ||
2164 | stream_putw(s, master->vrf_id); | |
2165 | stream_putl(s, master->ifindex); | |
2166 | stream_putw(s, slave->vrf_id); | |
2167 | stream_putl(s, slave->ifindex); | |
2168 | ||
2169 | stream_putw_at(s, 0, stream_get_endp(s)); | |
2170 | zclient_send_message(client); | |
2171 | } |