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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; | |
acdf5e25 | 126 | list_delete_and_null(&red->instances); |
d62a17ae | 127 | } |
7c8ff89e DS |
128 | } |
129 | ||
718e3744 | 130 | /* Stop zebra client services. */ |
d62a17ae | 131 | void zclient_stop(struct zclient *zclient) |
718e3744 | 132 | { |
d62a17ae | 133 | afi_t afi; |
134 | int i; | |
135 | ||
136 | if (zclient_debug) | |
137 | zlog_debug("zclient stopped"); | |
138 | ||
139 | /* Stop threads. */ | |
140 | THREAD_OFF(zclient->t_read); | |
141 | THREAD_OFF(zclient->t_connect); | |
142 | THREAD_OFF(zclient->t_write); | |
143 | ||
144 | /* Reset streams. */ | |
145 | stream_reset(zclient->ibuf); | |
146 | stream_reset(zclient->obuf); | |
147 | ||
148 | /* Empty the write buffer. */ | |
149 | buffer_reset(zclient->wb); | |
150 | ||
151 | /* Close socket. */ | |
152 | if (zclient->sock >= 0) { | |
153 | close(zclient->sock); | |
154 | zclient->sock = -1; | |
155 | } | |
156 | zclient->fail = 0; | |
157 | ||
158 | for (afi = AFI_IP; afi < AFI_MAX; afi++) { | |
159 | for (i = 0; i < ZEBRA_ROUTE_MAX; i++) { | |
160 | vrf_bitmap_free(zclient->redist[afi][i]); | |
161 | zclient->redist[afi][i] = VRF_BITMAP_NULL; | |
162 | } | |
163 | redist_del_instance( | |
164 | &zclient->mi_redist[afi][zclient->redist_default], | |
165 | zclient->instance); | |
41246cb6 | 166 | } |
41246cb6 | 167 | |
d62a17ae | 168 | vrf_bitmap_free(zclient->default_information); |
169 | zclient->default_information = VRF_BITMAP_NULL; | |
718e3744 | 170 | } |
171 | ||
d62a17ae | 172 | void zclient_reset(struct zclient *zclient) |
718e3744 | 173 | { |
d62a17ae | 174 | afi_t afi; |
3d68677e | 175 | |
d62a17ae | 176 | zclient_stop(zclient); |
3d68677e | 177 | |
d62a17ae | 178 | for (afi = AFI_IP; afi < AFI_MAX; afi++) |
179 | redist_del_instance( | |
180 | &zclient->mi_redist[afi][zclient->redist_default], | |
181 | zclient->instance); | |
3d68677e | 182 | |
d62a17ae | 183 | zclient_init(zclient, zclient->redist_default, zclient->instance); |
718e3744 | 184 | } |
185 | ||
689f5a8c DL |
186 | /** |
187 | * Connect to zebra daemon. | |
188 | * @param zclient a pointer to zclient structure | |
189 | * @return socket fd just to make sure that connection established | |
190 | * @see zclient_init | |
191 | * @see zclient_new | |
192 | */ | |
193 | int zclient_socket_connect(struct zclient *zclient) | |
718e3744 | 194 | { |
d62a17ae | 195 | int sock; |
196 | int ret; | |
d62a17ae | 197 | |
198 | /* We should think about IPv6 connection. */ | |
689f5a8c | 199 | sock = socket(zclient_addr.ss_family, SOCK_STREAM, 0); |
d62a17ae | 200 | if (sock < 0) |
201 | return -1; | |
202 | ||
689f5a8c | 203 | set_cloexec(sock); |
d62a17ae | 204 | |
205 | /* Connect to zebra. */ | |
689f5a8c DL |
206 | ret = connect(sock, (struct sockaddr *)&zclient_addr, |
207 | zclient_addr_len); | |
d62a17ae | 208 | if (ret < 0) { |
209 | if (zclient_debug) | |
210 | zlog_warn("%s connect failure: %d(%s)", | |
211 | __PRETTY_FUNCTION__, errno, | |
212 | safe_strerror(errno)); | |
213 | close(sock); | |
214 | return -1; | |
215 | } | |
718e3744 | 216 | |
689f5a8c | 217 | zclient->sock = sock; |
d62a17ae | 218 | return sock; |
718e3744 | 219 | } |
220 | ||
d62a17ae | 221 | static int zclient_failed(struct zclient *zclient) |
634f9ea2 | 222 | { |
d62a17ae | 223 | zclient->fail++; |
224 | zclient_stop(zclient); | |
225 | zclient_event(ZCLIENT_CONNECT, zclient); | |
226 | return -1; | |
634f9ea2 | 227 | } |
228 | ||
d62a17ae | 229 | static int zclient_flush_data(struct thread *thread) |
634f9ea2 | 230 | { |
d62a17ae | 231 | struct zclient *zclient = THREAD_ARG(thread); |
232 | ||
233 | zclient->t_write = NULL; | |
234 | if (zclient->sock < 0) | |
235 | return -1; | |
236 | switch (buffer_flush_available(zclient->wb, zclient->sock)) { | |
237 | case BUFFER_ERROR: | |
238 | zlog_warn( | |
239 | "%s: buffer_flush_available failed on zclient fd %d, closing", | |
240 | __func__, zclient->sock); | |
241 | return zclient_failed(zclient); | |
242 | break; | |
243 | case BUFFER_PENDING: | |
244 | zclient->t_write = NULL; | |
245 | thread_add_write(zclient->master, zclient_flush_data, zclient, | |
246 | zclient->sock, &zclient->t_write); | |
247 | break; | |
248 | case BUFFER_EMPTY: | |
249 | break; | |
250 | } | |
251 | return 0; | |
634f9ea2 | 252 | } |
253 | ||
d62a17ae | 254 | int zclient_send_message(struct zclient *zclient) |
634f9ea2 | 255 | { |
d62a17ae | 256 | if (zclient->sock < 0) |
257 | return -1; | |
258 | switch (buffer_write(zclient->wb, zclient->sock, | |
259 | STREAM_DATA(zclient->obuf), | |
260 | stream_get_endp(zclient->obuf))) { | |
261 | case BUFFER_ERROR: | |
262 | zlog_warn("%s: buffer_write failed to zclient fd %d, closing", | |
263 | __func__, zclient->sock); | |
264 | return zclient_failed(zclient); | |
265 | break; | |
266 | case BUFFER_EMPTY: | |
267 | THREAD_OFF(zclient->t_write); | |
268 | break; | |
269 | case BUFFER_PENDING: | |
270 | thread_add_write(zclient->master, zclient_flush_data, zclient, | |
271 | zclient->sock, &zclient->t_write); | |
272 | break; | |
273 | } | |
274 | return 0; | |
634f9ea2 | 275 | } |
276 | ||
d62a17ae | 277 | void zclient_create_header(struct stream *s, uint16_t command, vrf_id_t vrf_id) |
c1b9800a | 278 | { |
d62a17ae | 279 | /* length placeholder, caller can update */ |
280 | stream_putw(s, ZEBRA_HEADER_SIZE); | |
281 | stream_putc(s, ZEBRA_HEADER_MARKER); | |
282 | stream_putc(s, ZSERV_VERSION); | |
283 | stream_putw(s, vrf_id); | |
284 | stream_putw(s, command); | |
c1b9800a | 285 | } |
286 | ||
d62a17ae | 287 | int zclient_read_header(struct stream *s, int sock, u_int16_t *size, |
288 | u_char *marker, u_char *version, vrf_id_t *vrf_id, | |
289 | u_int16_t *cmd) | |
55119089 | 290 | { |
d62a17ae | 291 | if (stream_read(s, sock, ZEBRA_HEADER_SIZE) != ZEBRA_HEADER_SIZE) |
292 | return -1; | |
293 | ||
294 | *size = stream_getw(s) - ZEBRA_HEADER_SIZE; | |
295 | *marker = stream_getc(s); | |
296 | *version = stream_getc(s); | |
297 | *vrf_id = stream_getw(s); | |
298 | *cmd = stream_getw(s); | |
299 | ||
300 | if (*version != ZSERV_VERSION || *marker != ZEBRA_HEADER_MARKER) { | |
301 | zlog_err( | |
302 | "%s: socket %d version mismatch, marker %d, version %d", | |
303 | __func__, sock, *marker, *version); | |
304 | return -1; | |
305 | } | |
306 | ||
307 | if (*size && stream_read(s, sock, *size) != *size) | |
308 | return -1; | |
309 | ||
310 | return 0; | |
55119089 ND |
311 | } |
312 | ||
634f9ea2 | 313 | /* Send simple Zebra message. */ |
d62a17ae | 314 | static int zebra_message_send(struct zclient *zclient, int command, |
315 | vrf_id_t vrf_id) | |
718e3744 | 316 | { |
d62a17ae | 317 | struct stream *s; |
718e3744 | 318 | |
d62a17ae | 319 | /* Get zclient output buffer. */ |
320 | s = zclient->obuf; | |
321 | stream_reset(s); | |
718e3744 | 322 | |
d62a17ae | 323 | /* Send very simple command only Zebra message. */ |
324 | zclient_create_header(s, command, vrf_id); | |
325 | ||
326 | return zclient_send_message(zclient); | |
718e3744 | 327 | } |
328 | ||
d62a17ae | 329 | static int zebra_hello_send(struct zclient *zclient) |
2ea1ab1c | 330 | { |
d62a17ae | 331 | struct stream *s; |
332 | ||
333 | if (zclient->redist_default) { | |
334 | s = zclient->obuf; | |
335 | stream_reset(s); | |
336 | ||
337 | /* The VRF ID in the HELLO message is always 0. */ | |
338 | zclient_create_header(s, ZEBRA_HELLO, VRF_DEFAULT); | |
339 | stream_putc(s, zclient->redist_default); | |
340 | stream_putw(s, zclient->instance); | |
341 | stream_putw_at(s, 0, stream_get_endp(s)); | |
342 | return zclient_send_message(zclient); | |
343 | } | |
344 | ||
345 | return 0; | |
2ea1ab1c VT |
346 | } |
347 | ||
0e5223e7 | 348 | /* Send register requests to zebra daemon for the information in a VRF. */ |
d62a17ae | 349 | void zclient_send_reg_requests(struct zclient *zclient, vrf_id_t vrf_id) |
7076bb2f | 350 | { |
d62a17ae | 351 | int i; |
352 | afi_t afi; | |
353 | ||
d62a17ae | 354 | /* If not connected to the zebra yet. */ |
355 | if (zclient->sock < 0) | |
356 | return; | |
357 | ||
358 | if (zclient_debug) | |
359 | zlog_debug("%s: send register messages for VRF %u", __func__, | |
360 | vrf_id); | |
361 | ||
362 | /* We need router-id information. */ | |
363 | zebra_message_send(zclient, ZEBRA_ROUTER_ID_ADD, vrf_id); | |
364 | ||
365 | /* We need interface information. */ | |
366 | zebra_message_send(zclient, ZEBRA_INTERFACE_ADD, vrf_id); | |
367 | ||
368 | /* Set unwanted redistribute route. */ | |
369 | for (afi = AFI_IP; afi < AFI_MAX; afi++) | |
370 | vrf_bitmap_set(zclient->redist[afi][zclient->redist_default], | |
371 | vrf_id); | |
372 | ||
373 | /* Flush all redistribute request. */ | |
374 | if (vrf_id == VRF_DEFAULT) | |
375 | for (afi = AFI_IP; afi < AFI_MAX; afi++) | |
376 | for (i = 0; i < ZEBRA_ROUTE_MAX; i++) | |
377 | if (zclient->mi_redist[afi][i].enabled) { | |
378 | struct listnode *node; | |
379 | u_short *id; | |
380 | ||
381 | for (ALL_LIST_ELEMENTS_RO( | |
382 | zclient->mi_redist[afi][i] | |
383 | .instances, | |
384 | node, id)) | |
385 | if (!(i == zclient->redist_default | |
386 | && *id == zclient->instance)) | |
387 | zebra_redistribute_send( | |
388 | ZEBRA_REDISTRIBUTE_ADD, | |
389 | zclient, afi, i, | |
390 | *id, | |
391 | VRF_DEFAULT); | |
392 | } | |
393 | ||
394 | /* Flush all redistribute request. */ | |
395 | for (afi = AFI_IP; afi < AFI_MAX; afi++) | |
396 | for (i = 0; i < ZEBRA_ROUTE_MAX; i++) | |
397 | if (i != zclient->redist_default | |
398 | && vrf_bitmap_check(zclient->redist[afi][i], | |
399 | vrf_id)) | |
400 | zebra_redistribute_send(ZEBRA_REDISTRIBUTE_ADD, | |
401 | zclient, afi, i, 0, | |
402 | vrf_id); | |
403 | ||
404 | /* If default information is needed. */ | |
405 | if (vrf_bitmap_check(zclient->default_information, VRF_DEFAULT)) | |
406 | zebra_message_send(zclient, ZEBRA_REDISTRIBUTE_DEFAULT_ADD, | |
407 | vrf_id); | |
7076bb2f FL |
408 | } |
409 | ||
0e5223e7 | 410 | /* Send unregister requests to zebra daemon for the information in a VRF. */ |
d62a17ae | 411 | void zclient_send_dereg_requests(struct zclient *zclient, vrf_id_t vrf_id) |
0e5223e7 | 412 | { |
d62a17ae | 413 | int i; |
414 | afi_t afi; | |
415 | ||
d62a17ae | 416 | /* If not connected to the zebra yet. */ |
417 | if (zclient->sock < 0) | |
418 | return; | |
419 | ||
420 | if (zclient_debug) | |
421 | zlog_debug("%s: send deregister messages for VRF %u", __func__, | |
422 | vrf_id); | |
423 | ||
424 | /* We need router-id information. */ | |
425 | zebra_message_send(zclient, ZEBRA_ROUTER_ID_DELETE, vrf_id); | |
426 | ||
427 | /* We need interface information. */ | |
428 | zebra_message_send(zclient, ZEBRA_INTERFACE_DELETE, vrf_id); | |
429 | ||
430 | /* Set unwanted redistribute route. */ | |
431 | for (afi = AFI_IP; afi < AFI_MAX; afi++) | |
432 | vrf_bitmap_set(zclient->redist[afi][zclient->redist_default], | |
433 | vrf_id); | |
434 | ||
435 | /* Flush all redistribute request. */ | |
436 | if (vrf_id == VRF_DEFAULT) | |
437 | for (afi = AFI_IP; afi < AFI_MAX; afi++) | |
438 | for (i = 0; i < ZEBRA_ROUTE_MAX; i++) | |
439 | if (zclient->mi_redist[afi][i].enabled) { | |
440 | struct listnode *node; | |
441 | u_short *id; | |
442 | ||
443 | for (ALL_LIST_ELEMENTS_RO( | |
444 | zclient->mi_redist[afi][i] | |
445 | .instances, | |
446 | node, id)) | |
447 | if (!(i == zclient->redist_default | |
448 | && *id == zclient->instance)) | |
449 | zebra_redistribute_send( | |
450 | ZEBRA_REDISTRIBUTE_DELETE, | |
451 | zclient, afi, i, | |
452 | *id, | |
453 | VRF_DEFAULT); | |
454 | } | |
455 | ||
456 | /* Flush all redistribute request. */ | |
457 | for (afi = AFI_IP; afi < AFI_MAX; afi++) | |
458 | for (i = 0; i < ZEBRA_ROUTE_MAX; i++) | |
459 | if (i != zclient->redist_default | |
460 | && vrf_bitmap_check(zclient->redist[afi][i], | |
461 | vrf_id)) | |
462 | zebra_redistribute_send( | |
463 | ZEBRA_REDISTRIBUTE_DELETE, zclient, afi, | |
464 | i, 0, vrf_id); | |
465 | ||
466 | /* If default information is needed. */ | |
467 | if (vrf_bitmap_check(zclient->default_information, VRF_DEFAULT)) | |
468 | zebra_message_send(zclient, ZEBRA_REDISTRIBUTE_DEFAULT_DELETE, | |
469 | vrf_id); | |
0e5223e7 | 470 | } |
471 | ||
4a04e5f7 | 472 | /* Send request to zebra daemon to start or stop RA. */ |
d62a17ae | 473 | void zclient_send_interface_radv_req(struct zclient *zclient, vrf_id_t vrf_id, |
474 | struct interface *ifp, int enable, | |
475 | int ra_interval) | |
4a04e5f7 | 476 | { |
d62a17ae | 477 | struct stream *s; |
4a04e5f7 | 478 | |
d62a17ae | 479 | /* If not connected to the zebra yet. */ |
480 | if (zclient->sock < 0) | |
481 | return; | |
4a04e5f7 | 482 | |
d62a17ae | 483 | /* Form and send message. */ |
484 | s = zclient->obuf; | |
485 | stream_reset(s); | |
4a04e5f7 | 486 | |
d62a17ae | 487 | if (enable) |
488 | zclient_create_header(s, ZEBRA_INTERFACE_ENABLE_RADV, vrf_id); | |
489 | else | |
490 | zclient_create_header(s, ZEBRA_INTERFACE_DISABLE_RADV, vrf_id); | |
4a04e5f7 | 491 | |
d62a17ae | 492 | stream_putl(s, ifp->ifindex); |
493 | stream_putl(s, ra_interval); | |
4a04e5f7 | 494 | |
d62a17ae | 495 | stream_putw_at(s, 0, stream_get_endp(s)); |
4a04e5f7 | 496 | |
d62a17ae | 497 | zclient_send_message(zclient); |
4a04e5f7 | 498 | } |
499 | ||
718e3744 | 500 | /* Make connection to zebra daemon. */ |
d62a17ae | 501 | int zclient_start(struct zclient *zclient) |
718e3744 | 502 | { |
d62a17ae | 503 | if (zclient_debug) |
504 | zlog_info("zclient_start is called"); | |
505 | ||
d62a17ae | 506 | /* If already connected to the zebra. */ |
507 | if (zclient->sock >= 0) | |
508 | return 0; | |
509 | ||
510 | /* Check connect thread. */ | |
511 | if (zclient->t_connect) | |
512 | return 0; | |
513 | ||
514 | if (zclient_socket_connect(zclient) < 0) { | |
515 | if (zclient_debug) | |
516 | zlog_debug("zclient connection fail"); | |
517 | zclient->fail++; | |
518 | zclient_event(ZCLIENT_CONNECT, zclient); | |
519 | return -1; | |
520 | } | |
718e3744 | 521 | |
d62a17ae | 522 | if (set_nonblocking(zclient->sock) < 0) |
523 | zlog_warn("%s: set_nonblocking(%d) failed", __func__, | |
524 | zclient->sock); | |
718e3744 | 525 | |
d62a17ae | 526 | /* Clear fail count. */ |
527 | zclient->fail = 0; | |
528 | if (zclient_debug) | |
529 | zlog_debug("zclient connect success with socket [%d]", | |
530 | zclient->sock); | |
718e3744 | 531 | |
d62a17ae | 532 | /* Create read thread. */ |
533 | zclient_event(ZCLIENT_READ, zclient); | |
718e3744 | 534 | |
d62a17ae | 535 | zebra_hello_send(zclient); |
718e3744 | 536 | |
d62a17ae | 537 | /* Inform the successful connection. */ |
538 | if (zclient->zebra_connected) | |
539 | (*zclient->zebra_connected)(zclient); | |
718e3744 | 540 | |
d62a17ae | 541 | return 0; |
718e3744 | 542 | } |
6b0655a2 | 543 | |
078430f6 DS |
544 | /* Initialize zebra client. Argument redist_default is unwanted |
545 | redistribute route type. */ | |
d62a17ae | 546 | void zclient_init(struct zclient *zclient, int redist_default, u_short instance) |
078430f6 | 547 | { |
d62a17ae | 548 | int afi, i; |
549 | ||
d62a17ae | 550 | /* Set -1 to the default socket value. */ |
551 | zclient->sock = -1; | |
552 | ||
553 | /* Clear redistribution flags. */ | |
554 | for (afi = AFI_IP; afi < AFI_MAX; afi++) | |
555 | for (i = 0; i < ZEBRA_ROUTE_MAX; i++) | |
556 | zclient->redist[afi][i] = vrf_bitmap_init(); | |
557 | ||
558 | /* Set unwanted redistribute route. bgpd does not need BGP route | |
559 | redistribution. */ | |
560 | zclient->redist_default = redist_default; | |
561 | zclient->instance = instance; | |
562 | /* Pending: make afi(s) an arg. */ | |
563 | for (afi = AFI_IP; afi < AFI_MAX; afi++) | |
564 | redist_add_instance(&zclient->mi_redist[afi][redist_default], | |
565 | instance); | |
566 | ||
567 | /* Set default-information redistribute to zero. */ | |
568 | zclient->default_information = vrf_bitmap_init(); | |
569 | ; | |
570 | ||
571 | if (zclient_debug) | |
572 | zlog_debug("zclient_start is called"); | |
573 | ||
574 | zclient_event(ZCLIENT_SCHEDULE, zclient); | |
7076bb2f | 575 | } |
078430f6 | 576 | |
7076bb2f FL |
577 | /* This function is a wrapper function for calling zclient_start from |
578 | timer or event thread. */ | |
d62a17ae | 579 | static int zclient_connect(struct thread *t) |
7076bb2f | 580 | { |
d62a17ae | 581 | struct zclient *zclient; |
078430f6 | 582 | |
d62a17ae | 583 | zclient = THREAD_ARG(t); |
584 | zclient->t_connect = NULL; | |
078430f6 | 585 | |
d62a17ae | 586 | if (zclient_debug) |
587 | zlog_debug("zclient_connect is called"); | |
078430f6 | 588 | |
d62a17ae | 589 | return zclient_start(zclient); |
078430f6 DS |
590 | } |
591 | ||
d62a17ae | 592 | /* |
593 | * "xdr_encode"-like interface that allows daemon (client) to send | |
594 | * a message to zebra server for a route that needs to be | |
595 | * added/deleted to the kernel. Info about the route is specified | |
596 | * by the caller in a struct zapi_ipv4. zapi_ipv4_read() then writes | |
597 | * the info down the zclient socket using the stream_* functions. | |
598 | * | |
599 | * The corresponding read ("xdr_decode") function on the server | |
600 | * side is zread_ipv4_add()/zread_ipv4_delete(). | |
601 | * | |
602 | * 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 | |
603 | * +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+ | |
604 | * | Length (2) | Command | Route Type | | |
605 | * +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+ | |
606 | * | ZEBRA Flags | Message Flags | Prefix length | | |
607 | * +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+ | |
608 | * | Destination IPv4 Prefix for route | | |
609 | * +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+ | |
610 | * | Nexthop count | | |
611 | * +-+-+-+-+-+-+-+-+ | |
612 | * | |
613 | * | |
614 | * A number of IPv4 nexthop(s) or nexthop interface index(es) are then | |
615 | * described, as per the Nexthop count. Each nexthop described as: | |
616 | * | |
617 | * +-+-+-+-+-+-+-+-+ | |
618 | * | Nexthop Type | Set to one of ZEBRA_NEXTHOP_* | |
619 | * +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+ | |
620 | * | IPv4 Nexthop address or Interface Index number | | |
621 | * +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+ | |
622 | * | |
09a484dd DL |
623 | * Alternatively, if the route is a blackhole route, then Nexthop count |
624 | * is set to 1 and a nexthop of type NEXTHOP_TYPE_BLACKHOLE is the sole | |
625 | * nexthop. | |
d62a17ae | 626 | * |
627 | * The original struct zapi_ipv4, zapi_ipv4_route() and zread_ipv4_*() | |
628 | * infrastructure was built around the traditional (32-bit "gate OR | |
629 | * ifindex") nexthop data unit. A special encoding can be used to feed | |
630 | * onlink (64-bit "gate AND ifindex") nexthops into zapi_ipv4_route() | |
631 | * using the same zapi_ipv4 structure. This is done by setting zapi_ipv4 | |
632 | * fields as follows: | |
633 | * - .message |= ZAPI_MESSAGE_NEXTHOP | ZAPI_MESSAGE_ONLINK | |
634 | * - .nexthop_num == .ifindex_num | |
635 | * - .nexthop and .ifindex are filled with gate and ifindex parts of | |
636 | * each compound nexthop, both in the same order | |
637 | * | |
638 | * zapi_ipv4_route() will produce two nexthop data units for each such | |
639 | * interleaved 64-bit nexthop. On the zserv side of the socket it will be | |
640 | * mapped to a singlle NEXTHOP_TYPE_IPV4_IFINDEX_OL RIB nexthop structure. | |
641 | * | |
642 | * If ZAPI_MESSAGE_DISTANCE is set, the distance value is written as a 1 | |
643 | * byte value. | |
644 | * | |
645 | * If ZAPI_MESSAGE_METRIC is set, the metric value is written as an 8 | |
646 | * byte value. | |
647 | * | |
648 | * If ZAPI_MESSAGE_TAG is set, the tag value is written as a 4 byte value | |
649 | * | |
650 | * If ZAPI_MESSAGE_MTU is set, the mtu value is written as a 4 byte value | |
651 | * | |
652 | * XXX: No attention paid to alignment. | |
653 | */ | |
654 | int zapi_ipv4_route(u_char cmd, struct zclient *zclient, struct prefix_ipv4 *p, | |
655 | struct zapi_ipv4 *api) | |
718e3744 | 656 | { |
d62a17ae | 657 | int i; |
658 | int psize; | |
659 | struct stream *s; | |
660 | ||
661 | /* Reset stream. */ | |
662 | s = zclient->obuf; | |
663 | stream_reset(s); | |
664 | ||
665 | /* Some checks for labeled-unicast. The current expectation is that each | |
666 | * nexthop is accompanied by a label in the case of labeled-unicast. | |
667 | */ | |
668 | if (CHECK_FLAG(api->message, ZAPI_MESSAGE_LABEL) | |
669 | && CHECK_FLAG(api->message, ZAPI_MESSAGE_NEXTHOP)) { | |
670 | /* We expect prefixes installed with labels and the number to | |
671 | * match | |
672 | * the number of nexthops. | |
673 | */ | |
674 | assert(api->label_num == api->nexthop_num); | |
675 | } | |
676 | ||
677 | zclient_create_header(s, cmd, api->vrf_id); | |
678 | ||
679 | /* Put type and nexthop. */ | |
680 | stream_putc(s, api->type); | |
681 | stream_putw(s, api->instance); | |
682 | stream_putl(s, api->flags); | |
683 | stream_putc(s, api->message); | |
684 | stream_putw(s, api->safi); | |
685 | ||
686 | /* Put prefix information. */ | |
687 | psize = PSIZE(p->prefixlen); | |
688 | stream_putc(s, p->prefixlen); | |
689 | stream_write(s, (u_char *)&p->prefix, psize); | |
690 | ||
691 | /* Nexthop, ifindex, distance and metric information. */ | |
692 | if (CHECK_FLAG(api->message, ZAPI_MESSAGE_NEXTHOP)) { | |
09a484dd | 693 | stream_putc(s, api->nexthop_num + api->ifindex_num); |
d62a17ae | 694 | |
695 | for (i = 0; i < api->nexthop_num; i++) { | |
696 | stream_putc(s, NEXTHOP_TYPE_IPV4); | |
697 | stream_put_in_addr(s, api->nexthop[i]); | |
698 | /* For labeled-unicast, each nexthop is followed by | |
699 | * label. */ | |
700 | if (CHECK_FLAG(api->message, ZAPI_MESSAGE_LABEL)) | |
701 | stream_putl(s, api->label[i]); | |
702 | } | |
703 | for (i = 0; i < api->ifindex_num; i++) { | |
704 | stream_putc(s, NEXTHOP_TYPE_IFINDEX); | |
705 | stream_putl(s, api->ifindex[i]); | |
706 | } | |
707 | } | |
708 | ||
709 | if (CHECK_FLAG(api->message, ZAPI_MESSAGE_DISTANCE)) | |
710 | stream_putc(s, api->distance); | |
711 | if (CHECK_FLAG(api->message, ZAPI_MESSAGE_METRIC)) | |
712 | stream_putl(s, api->metric); | |
713 | if (CHECK_FLAG(api->message, ZAPI_MESSAGE_TAG)) | |
714 | stream_putl(s, api->tag); | |
715 | if (CHECK_FLAG(api->message, ZAPI_MESSAGE_MTU)) | |
716 | stream_putl(s, api->mtu); | |
717 | ||
718 | /* Put length at the first point of the stream. */ | |
719 | stream_putw_at(s, 0, stream_get_endp(s)); | |
720 | ||
721 | return zclient_send_message(zclient); | |
718e3744 | 722 | } |
723 | ||
d62a17ae | 724 | int zapi_ipv4_route_ipv6_nexthop(u_char cmd, struct zclient *zclient, |
725 | struct prefix_ipv4 *p, struct zapi_ipv6 *api) | |
8a92a8a0 | 726 | { |
d62a17ae | 727 | int i; |
728 | int psize; | |
729 | struct stream *s; | |
730 | ||
731 | /* Reset stream. */ | |
732 | s = zclient->obuf; | |
733 | stream_reset(s); | |
734 | ||
735 | /* Some checks for labeled-unicast. The current expectation is that each | |
736 | * nexthop is accompanied by a label in the case of labeled-unicast. | |
737 | */ | |
738 | if (CHECK_FLAG(api->message, ZAPI_MESSAGE_LABEL) | |
739 | && CHECK_FLAG(api->message, ZAPI_MESSAGE_NEXTHOP)) { | |
740 | /* We expect prefixes installed with labels and the number to | |
741 | * match | |
742 | * the number of nexthops. | |
743 | */ | |
744 | assert(api->label_num == api->nexthop_num); | |
8a92a8a0 | 745 | } |
d62a17ae | 746 | |
747 | zclient_create_header(s, cmd, api->vrf_id); | |
748 | ||
749 | /* Put type and nexthop. */ | |
750 | stream_putc(s, api->type); | |
751 | stream_putw(s, api->instance); | |
752 | stream_putl(s, api->flags); | |
753 | stream_putc(s, api->message); | |
754 | stream_putw(s, api->safi); | |
755 | ||
756 | /* Put prefix information. */ | |
757 | psize = PSIZE(p->prefixlen); | |
758 | stream_putc(s, p->prefixlen); | |
759 | stream_write(s, (u_char *)&p->prefix, psize); | |
760 | ||
761 | /* Nexthop, ifindex, distance and metric information. */ | |
762 | if (CHECK_FLAG(api->message, ZAPI_MESSAGE_NEXTHOP)) { | |
09a484dd | 763 | stream_putc(s, api->nexthop_num + api->ifindex_num); |
d62a17ae | 764 | |
765 | for (i = 0; i < api->nexthop_num; i++) { | |
766 | stream_putc(s, NEXTHOP_TYPE_IPV6); | |
767 | stream_write(s, (u_char *)api->nexthop[i], 16); | |
768 | /* For labeled-unicast, each nexthop is followed by | |
769 | * label. */ | |
770 | if (CHECK_FLAG(api->message, ZAPI_MESSAGE_LABEL)) | |
771 | stream_putl(s, api->label[i]); | |
772 | } | |
773 | for (i = 0; i < api->ifindex_num; i++) { | |
774 | stream_putc(s, NEXTHOP_TYPE_IFINDEX); | |
775 | stream_putl(s, api->ifindex[i]); | |
776 | } | |
8a92a8a0 | 777 | } |
8a92a8a0 | 778 | |
d62a17ae | 779 | if (CHECK_FLAG(api->message, ZAPI_MESSAGE_DISTANCE)) |
780 | stream_putc(s, api->distance); | |
781 | if (CHECK_FLAG(api->message, ZAPI_MESSAGE_METRIC)) | |
782 | stream_putl(s, api->metric); | |
783 | if (CHECK_FLAG(api->message, ZAPI_MESSAGE_TAG)) | |
784 | stream_putl(s, api->tag); | |
785 | if (CHECK_FLAG(api->message, ZAPI_MESSAGE_MTU)) | |
786 | stream_putl(s, api->mtu); | |
8a92a8a0 | 787 | |
d62a17ae | 788 | /* Put length at the first point of the stream. */ |
789 | stream_putw_at(s, 0, stream_get_endp(s)); | |
8a92a8a0 | 790 | |
d62a17ae | 791 | return zclient_send_message(zclient); |
8a92a8a0 DS |
792 | } |
793 | ||
d62a17ae | 794 | int zapi_ipv6_route(u_char cmd, struct zclient *zclient, struct prefix_ipv6 *p, |
795 | struct prefix_ipv6 *src_p, struct zapi_ipv6 *api) | |
718e3744 | 796 | { |
d62a17ae | 797 | int i; |
798 | int psize; | |
799 | struct stream *s; | |
800 | ||
801 | /* either we have !SRCPFX && src_p == NULL, or SRCPFX && src_p != NULL | |
802 | */ | |
803 | assert(!(api->message & ZAPI_MESSAGE_SRCPFX) == !src_p); | |
804 | ||
805 | /* Reset stream. */ | |
806 | s = zclient->obuf; | |
807 | stream_reset(s); | |
808 | ||
809 | /* Some checks for labeled-unicast. The current expectation is that each | |
810 | * nexthop is accompanied by a label in the case of labeled-unicast. | |
811 | */ | |
812 | if (CHECK_FLAG(api->message, ZAPI_MESSAGE_LABEL) | |
813 | && CHECK_FLAG(api->message, ZAPI_MESSAGE_NEXTHOP)) { | |
814 | /* We expect prefixes installed with labels and the number to | |
815 | * match | |
816 | * the number of nexthops. | |
817 | */ | |
818 | assert(api->label_num == api->nexthop_num); | |
718e3744 | 819 | } |
d62a17ae | 820 | |
821 | zclient_create_header(s, cmd, api->vrf_id); | |
822 | ||
823 | /* Put type and nexthop. */ | |
824 | stream_putc(s, api->type); | |
825 | stream_putw(s, api->instance); | |
826 | stream_putl(s, api->flags); | |
827 | stream_putc(s, api->message); | |
828 | stream_putw(s, api->safi); | |
829 | ||
830 | /* Put prefix information. */ | |
831 | psize = PSIZE(p->prefixlen); | |
832 | stream_putc(s, p->prefixlen); | |
833 | stream_write(s, (u_char *)&p->prefix, psize); | |
834 | ||
835 | if (CHECK_FLAG(api->message, ZAPI_MESSAGE_SRCPFX)) { | |
836 | psize = PSIZE(src_p->prefixlen); | |
837 | stream_putc(s, src_p->prefixlen); | |
838 | stream_write(s, (u_char *)&src_p->prefix, psize); | |
718e3744 | 839 | } |
718e3744 | 840 | |
d62a17ae | 841 | /* Nexthop, ifindex, distance and metric information. */ |
842 | if (CHECK_FLAG(api->message, ZAPI_MESSAGE_NEXTHOP)) { | |
09a484dd | 843 | stream_putc(s, api->nexthop_num + api->ifindex_num); |
d62a17ae | 844 | |
845 | for (i = 0; i < api->nexthop_num; i++) { | |
846 | stream_putc(s, NEXTHOP_TYPE_IPV6); | |
847 | stream_write(s, (u_char *)api->nexthop[i], 16); | |
848 | /* For labeled-unicast, each nexthop is followed by | |
849 | * label. */ | |
850 | if (CHECK_FLAG(api->message, ZAPI_MESSAGE_LABEL)) | |
851 | stream_putl(s, api->label[i]); | |
852 | } | |
853 | for (i = 0; i < api->ifindex_num; i++) { | |
854 | stream_putc(s, NEXTHOP_TYPE_IFINDEX); | |
855 | stream_putl(s, api->ifindex[i]); | |
856 | } | |
857 | } | |
718e3744 | 858 | |
d62a17ae | 859 | if (CHECK_FLAG(api->message, ZAPI_MESSAGE_DISTANCE)) |
860 | stream_putc(s, api->distance); | |
861 | if (CHECK_FLAG(api->message, ZAPI_MESSAGE_METRIC)) | |
862 | stream_putl(s, api->metric); | |
863 | if (CHECK_FLAG(api->message, ZAPI_MESSAGE_TAG)) | |
864 | stream_putl(s, api->tag); | |
865 | if (CHECK_FLAG(api->message, ZAPI_MESSAGE_MTU)) | |
866 | stream_putl(s, api->mtu); | |
718e3744 | 867 | |
d62a17ae | 868 | /* Put length at the first point of the stream. */ |
869 | stream_putw_at(s, 0, stream_get_endp(s)); | |
870 | ||
871 | return zclient_send_message(zclient); | |
718e3744 | 872 | } |
718e3744 | 873 | |
0e51b4a3 RW |
874 | int zclient_route_send(u_char cmd, struct zclient *zclient, |
875 | struct zapi_route *api) | |
657cde12 | 876 | { |
0e51b4a3 RW |
877 | if (zapi_route_encode(cmd, zclient->obuf, api) < 0) |
878 | return -1; | |
879 | return zclient_send_message(zclient); | |
880 | } | |
881 | ||
882 | int zapi_route_encode(u_char cmd, struct stream *s, struct zapi_route *api) | |
883 | { | |
884 | struct zapi_nexthop *api_nh; | |
d62a17ae | 885 | int i; |
886 | int psize; | |
d62a17ae | 887 | |
d62a17ae | 888 | stream_reset(s); |
d62a17ae | 889 | zclient_create_header(s, cmd, api->vrf_id); |
890 | ||
d62a17ae | 891 | stream_putc(s, api->type); |
892 | stream_putw(s, api->instance); | |
893 | stream_putl(s, api->flags); | |
894 | stream_putc(s, api->message); | |
895 | stream_putw(s, api->safi); | |
896 | ||
897 | /* Put prefix information. */ | |
0e51b4a3 | 898 | stream_putc(s, api->prefix.family); |
bb1b9c47 RW |
899 | psize = PSIZE(api->prefix.prefixlen); |
900 | stream_putc(s, api->prefix.prefixlen); | |
901 | stream_write(s, (u_char *)&api->prefix.u.prefix, psize); | |
d62a17ae | 902 | |
903 | if (CHECK_FLAG(api->message, ZAPI_MESSAGE_SRCPFX)) { | |
bb1b9c47 RW |
904 | psize = PSIZE(api->src_prefix.prefixlen); |
905 | stream_putc(s, api->src_prefix.prefixlen); | |
906 | stream_write(s, (u_char *)&api->src_prefix.prefix, psize); | |
d62a17ae | 907 | } |
908 | ||
0e51b4a3 | 909 | /* Nexthops. */ |
d62a17ae | 910 | if (CHECK_FLAG(api->message, ZAPI_MESSAGE_NEXTHOP)) { |
bb1b9c47 RW |
911 | /* limit the number of nexthops if necessary */ |
912 | if (api->nexthop_num > MULTIPATH_NUM) { | |
913 | char buf[PREFIX2STR_BUFFER]; | |
914 | ||
915 | prefix2str(&api->prefix, buf, sizeof(buf)); | |
916 | zlog_warn( | |
a74e593b RW |
917 | "%s: prefix %s: can't encode %u nexthops " |
918 | "(maximum is %u)", | |
919 | __func__, buf, api->nexthop_num, MULTIPATH_NUM); | |
920 | return -1; | |
bb1b9c47 RW |
921 | } |
922 | ||
b5f79651 | 923 | stream_putw(s, api->nexthop_num); |
d62a17ae | 924 | |
925 | for (i = 0; i < api->nexthop_num; i++) { | |
bb1b9c47 RW |
926 | api_nh = &api->nexthops[i]; |
927 | ||
928 | stream_putc(s, api_nh->type); | |
929 | switch (api_nh->type) { | |
d62a17ae | 930 | case NEXTHOP_TYPE_BLACKHOLE: |
94758e66 | 931 | stream_putc(s, api_nh->bh_type); |
d62a17ae | 932 | break; |
933 | case NEXTHOP_TYPE_IPV4: | |
bb1b9c47 | 934 | stream_put_in_addr(s, &api_nh->gate.ipv4); |
d62a17ae | 935 | break; |
936 | case NEXTHOP_TYPE_IPV4_IFINDEX: | |
bb1b9c47 RW |
937 | stream_put_in_addr(s, &api_nh->gate.ipv4); |
938 | stream_putl(s, api_nh->ifindex); | |
d62a17ae | 939 | break; |
940 | case NEXTHOP_TYPE_IFINDEX: | |
bb1b9c47 | 941 | stream_putl(s, api_nh->ifindex); |
d62a17ae | 942 | break; |
943 | case NEXTHOP_TYPE_IPV6: | |
bb1b9c47 RW |
944 | stream_write(s, (u_char *)&api_nh->gate.ipv6, |
945 | 16); | |
d62a17ae | 946 | break; |
947 | case NEXTHOP_TYPE_IPV6_IFINDEX: | |
bb1b9c47 RW |
948 | stream_write(s, (u_char *)&api_nh->gate.ipv6, |
949 | 16); | |
950 | stream_putl(s, api_nh->ifindex); | |
d62a17ae | 951 | break; |
952 | } | |
bb1b9c47 | 953 | |
52dd3aa4 RW |
954 | /* MPLS labels for BGP-LU or Segment Routing */ |
955 | if (CHECK_FLAG(api->message, ZAPI_MESSAGE_LABEL)) { | |
956 | if (api_nh->label_num > MPLS_MAX_LABELS) { | |
957 | char buf[PREFIX2STR_BUFFER]; | |
958 | prefix2str(&api->prefix, buf, | |
959 | sizeof(buf)); | |
960 | zlog_err( | |
961 | "%s: prefix %s: can't encode " | |
962 | "%u labels (maximum is %u)", | |
963 | __func__, buf, | |
964 | api_nh->label_num, | |
965 | MPLS_MAX_LABELS); | |
966 | return -1; | |
967 | } | |
968 | ||
969 | stream_putc(s, api_nh->label_num); | |
970 | stream_put(s, &api_nh->labels[0], | |
971 | api_nh->label_num | |
972 | * sizeof(mpls_label_t)); | |
973 | } | |
d62a17ae | 974 | } |
975 | } | |
976 | ||
0e51b4a3 | 977 | /* Attributes. */ |
d62a17ae | 978 | if (CHECK_FLAG(api->message, ZAPI_MESSAGE_DISTANCE)) |
979 | stream_putc(s, api->distance); | |
980 | if (CHECK_FLAG(api->message, ZAPI_MESSAGE_METRIC)) | |
981 | stream_putl(s, api->metric); | |
982 | if (CHECK_FLAG(api->message, ZAPI_MESSAGE_TAG)) | |
983 | stream_putl(s, api->tag); | |
984 | if (CHECK_FLAG(api->message, ZAPI_MESSAGE_MTU)) | |
985 | stream_putl(s, api->mtu); | |
986 | ||
987 | /* Put length at the first point of the stream. */ | |
988 | stream_putw_at(s, 0, stream_get_endp(s)); | |
989 | ||
0e51b4a3 RW |
990 | return 0; |
991 | } | |
992 | ||
993 | int zapi_route_decode(struct stream *s, struct zapi_route *api) | |
994 | { | |
995 | struct zapi_nexthop *api_nh; | |
996 | int i; | |
997 | ||
998 | memset(api, 0, sizeof(*api)); | |
999 | ||
1000 | /* Type, flags, message. */ | |
1001 | api->type = stream_getc(s); | |
1002 | api->instance = stream_getw(s); | |
1003 | api->flags = stream_getl(s); | |
1004 | api->message = stream_getc(s); | |
1005 | api->safi = stream_getw(s); | |
1006 | ||
1007 | /* Prefix. */ | |
1008 | api->prefix.family = stream_getc(s); | |
1009 | switch (api->prefix.family) { | |
1010 | case AF_INET: | |
1011 | api->prefix.prefixlen = MIN(IPV4_MAX_PREFIXLEN, stream_getc(s)); | |
1012 | break; | |
1013 | case AF_INET6: | |
1014 | api->prefix.prefixlen = MIN(IPV6_MAX_PREFIXLEN, stream_getc(s)); | |
1015 | break; | |
1016 | } | |
1017 | stream_get(&api->prefix.u.prefix, s, PSIZE(api->prefix.prefixlen)); | |
1018 | if (CHECK_FLAG(api->message, ZAPI_MESSAGE_SRCPFX)) { | |
1019 | api->src_prefix.family = AF_INET6; | |
1020 | api->src_prefix.prefixlen = stream_getc(s); | |
1021 | stream_get(&api->src_prefix.prefix, s, | |
1022 | PSIZE(api->src_prefix.prefixlen)); | |
1023 | ||
1024 | if (api->prefix.family != AF_INET6 | |
1025 | || api->src_prefix.prefixlen == 0) | |
1026 | UNSET_FLAG(api->message, ZAPI_MESSAGE_SRCPFX); | |
1027 | } | |
1028 | ||
1029 | /* Nexthops. */ | |
1030 | if (CHECK_FLAG(api->message, ZAPI_MESSAGE_NEXTHOP)) { | |
b5f79651 | 1031 | api->nexthop_num = stream_getw(s); |
0e51b4a3 RW |
1032 | if (api->nexthop_num > MULTIPATH_NUM) { |
1033 | zlog_warn("%s: invalid number of nexthops (%u)", | |
1034 | __func__, api->nexthop_num); | |
1035 | return -1; | |
1036 | } | |
1037 | ||
1038 | for (i = 0; i < api->nexthop_num; i++) { | |
1039 | api_nh = &api->nexthops[i]; | |
1040 | ||
1041 | api_nh->type = stream_getc(s); | |
1042 | switch (api_nh->type) { | |
1043 | case NEXTHOP_TYPE_BLACKHOLE: | |
94758e66 | 1044 | api_nh->bh_type = stream_getc(s); |
0e51b4a3 RW |
1045 | break; |
1046 | case NEXTHOP_TYPE_IPV4: | |
1047 | api_nh->gate.ipv4.s_addr = stream_get_ipv4(s); | |
1048 | break; | |
1049 | case NEXTHOP_TYPE_IPV4_IFINDEX: | |
1050 | api_nh->gate.ipv4.s_addr = stream_get_ipv4(s); | |
1051 | api_nh->ifindex = stream_getl(s); | |
1052 | break; | |
1053 | case NEXTHOP_TYPE_IFINDEX: | |
1054 | api_nh->ifindex = stream_getl(s); | |
1055 | break; | |
1056 | case NEXTHOP_TYPE_IPV6: | |
1057 | stream_get(&api_nh->gate.ipv6, s, 16); | |
1058 | break; | |
1059 | case NEXTHOP_TYPE_IPV6_IFINDEX: | |
1060 | stream_get(&api_nh->gate.ipv6, s, 16); | |
1061 | api_nh->ifindex = stream_getl(s); | |
1062 | break; | |
1063 | } | |
1064 | ||
52dd3aa4 | 1065 | /* MPLS labels for BGP-LU or Segment Routing */ |
0e51b4a3 | 1066 | if (CHECK_FLAG(api->message, ZAPI_MESSAGE_LABEL)) { |
52dd3aa4 RW |
1067 | api_nh->label_num = stream_getc(s); |
1068 | ||
1069 | if (api_nh->label_num > MPLS_MAX_LABELS) { | |
1070 | zlog_warn( | |
1071 | "%s: invalid number of MPLS " | |
1072 | "labels (%u)", | |
1073 | __func__, api_nh->label_num); | |
1074 | return -1; | |
1075 | } | |
1076 | ||
1077 | stream_get(&api_nh->labels[0], s, | |
1078 | api_nh->label_num | |
1079 | * sizeof(mpls_label_t)); | |
0e51b4a3 RW |
1080 | } |
1081 | } | |
1082 | } | |
1083 | ||
1084 | /* Attributes. */ | |
1085 | if (CHECK_FLAG(api->message, ZAPI_MESSAGE_DISTANCE)) | |
1086 | api->distance = stream_getc(s); | |
1087 | if (CHECK_FLAG(api->message, ZAPI_MESSAGE_METRIC)) | |
1088 | api->metric = stream_getl(s); | |
1089 | if (CHECK_FLAG(api->message, ZAPI_MESSAGE_TAG)) | |
1090 | api->tag = stream_getl(s); | |
1091 | if (CHECK_FLAG(api->message, ZAPI_MESSAGE_MTU)) | |
1092 | api->mtu = stream_getl(s); | |
1093 | ||
1094 | return 0; | |
657cde12 DS |
1095 | } |
1096 | ||
d62a17ae | 1097 | /* |
0a589359 | 1098 | * send a ZEBRA_REDISTRIBUTE_ADD or ZEBRA_REDISTRIBUTE_DELETE |
1099 | * for the route type (ZEBRA_ROUTE_KERNEL etc.). The zebra server will | |
d62a17ae | 1100 | * then set/unset redist[type] in the client handle (a struct zserv) for the |
0a589359 | 1101 | * sending client |
1102 | */ | |
d62a17ae | 1103 | int zebra_redistribute_send(int command, struct zclient *zclient, afi_t afi, |
1104 | int type, u_short instance, vrf_id_t vrf_id) | |
718e3744 | 1105 | { |
d62a17ae | 1106 | struct stream *s; |
1107 | ||
1108 | s = zclient->obuf; | |
1109 | stream_reset(s); | |
1110 | ||
1111 | zclient_create_header(s, command, vrf_id); | |
1112 | stream_putc(s, afi); | |
1113 | stream_putc(s, type); | |
1114 | stream_putw(s, instance); | |
1115 | ||
1116 | stream_putw_at(s, 0, stream_get_endp(s)); | |
1117 | ||
1118 | return zclient_send_message(zclient); | |
718e3744 | 1119 | } |
1120 | ||
d9178828 | 1121 | /* Get prefix in ZServ format; family should be filled in on prefix */ |
d62a17ae | 1122 | static void zclient_stream_get_prefix(struct stream *s, struct prefix *p) |
d9178828 | 1123 | { |
d62a17ae | 1124 | size_t plen = prefix_blen(p); |
1125 | u_char c; | |
1126 | p->prefixlen = 0; | |
1127 | ||
1128 | if (plen == 0) | |
1129 | return; | |
1130 | ||
1131 | stream_get(&p->u.prefix, s, plen); | |
1132 | c = stream_getc(s); | |
1133 | p->prefixlen = MIN(plen * 8, c); | |
d9178828 PJ |
1134 | } |
1135 | ||
18a6dce6 | 1136 | /* Router-id update from zebra daemon. */ |
d62a17ae | 1137 | void zebra_router_id_update_read(struct stream *s, struct prefix *rid) |
18a6dce6 | 1138 | { |
d62a17ae | 1139 | /* Fetch interface address. */ |
1140 | rid->family = stream_getc(s); | |
1141 | ||
1142 | zclient_stream_get_prefix(s, rid); | |
18a6dce6 | 1143 | } |
1144 | ||
718e3744 | 1145 | /* Interface addition from zebra daemon. */ |
d62a17ae | 1146 | /* |
0a589359 | 1147 | * The format of the message sent with type ZEBRA_INTERFACE_ADD or |
1148 | * ZEBRA_INTERFACE_DELETE from zebra to the client is: | |
1149 | * 0 1 2 3 | |
1150 | * 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 | 1151 | * +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+ |
1152 | * | ifname | | |
1153 | * | | | |
1154 | * | | | |
1155 | * | | | |
1156 | * | | | |
1157 | * +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+ | |
16f1b9ee OD |
1158 | * | ifindex | |
1159 | * +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+ | |
1160 | * | status | | |
0a589359 | 1161 | * +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+ |
16f1b9ee | 1162 | * | if_flags | |
c77d4546 | 1163 | * | | |
0a589359 | 1164 | * +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+ |
16f1b9ee OD |
1165 | * | metric | |
1166 | * +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+ | |
2d7f0d76 DS |
1167 | * | speed | |
1168 | * +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+ | |
16f1b9ee OD |
1169 | * | ifmtu | |
1170 | * +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+ | |
1171 | * | ifmtu6 | | |
1172 | * +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+ | |
1173 | * | bandwidth | | |
1174 | * +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+ | |
1175 | * | Link Layer Type | | |
0a589359 | 1176 | * +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+ |
16f1b9ee | 1177 | * | Harware Address Length | |
0a589359 | 1178 | * +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+ |
16f1b9ee OD |
1179 | * | Hardware Address if HW lenght different from 0 | |
1180 | * | ... max INTERFACE_HWADDR_MAX | | |
0a589359 | 1181 | * +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+ |
16f1b9ee | 1182 | * | Link_params? | Whether a link-params follows: 1 or 0. |
0a589359 | 1183 | * +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+ |
16f1b9ee OD |
1184 | * | Link_params 0 or 1 INTERFACE_LINK_PARAMS_SIZE sized | |
1185 | * | .... (struct if_link_params). | | |
0a589359 | 1186 | * +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+ |
1187 | */ | |
1188 | ||
d62a17ae | 1189 | static void zclient_vrf_add(struct zclient *zclient, vrf_id_t vrf_id) |
1892f15e | 1190 | { |
d62a17ae | 1191 | struct vrf *vrf; |
1192 | char vrfname_tmp[VRF_NAMSIZ]; | |
1193 | struct vrf_data data; | |
1892f15e | 1194 | |
d62a17ae | 1195 | stream_get(&data, zclient->ibuf, sizeof(struct vrf_data)); |
1196 | /* Read interface name. */ | |
1197 | stream_get(vrfname_tmp, zclient->ibuf, VRF_NAMSIZ); | |
1892f15e | 1198 | |
d62a17ae | 1199 | /* Lookup/create vrf by vrf_id. */ |
1200 | vrf = vrf_get(vrf_id, vrfname_tmp); | |
1201 | vrf->data = data; | |
1892f15e | 1202 | |
d62a17ae | 1203 | vrf_enable(vrf); |
1892f15e DS |
1204 | } |
1205 | ||
d62a17ae | 1206 | static void zclient_vrf_delete(struct zclient *zclient, vrf_id_t vrf_id) |
1892f15e | 1207 | { |
d62a17ae | 1208 | struct vrf *vrf; |
1892f15e | 1209 | |
d62a17ae | 1210 | /* Lookup vrf by vrf_id. */ |
1211 | vrf = vrf_lookup_by_id(vrf_id); | |
1892f15e | 1212 | |
d62a17ae | 1213 | /* |
1214 | * If a routing protocol doesn't know about a | |
1215 | * vrf that is about to be deleted. There is | |
1216 | * no point in attempting to delete it. | |
1217 | */ | |
1218 | if (!vrf) | |
1219 | return; | |
beef1990 | 1220 | |
d62a17ae | 1221 | vrf_delete(vrf); |
1892f15e DS |
1222 | } |
1223 | ||
d62a17ae | 1224 | struct interface *zebra_interface_add_read(struct stream *s, vrf_id_t vrf_id) |
718e3744 | 1225 | { |
d62a17ae | 1226 | struct interface *ifp; |
1227 | char ifname_tmp[INTERFACE_NAMSIZ]; | |
718e3744 | 1228 | |
d62a17ae | 1229 | /* Read interface name. */ |
1230 | stream_get(ifname_tmp, s, INTERFACE_NAMSIZ); | |
718e3744 | 1231 | |
d62a17ae | 1232 | /* Lookup/create interface by name. */ |
bcc24579 | 1233 | ifp = if_get_by_name(ifname_tmp, vrf_id, 0); |
718e3744 | 1234 | |
d62a17ae | 1235 | zebra_interface_if_set_value(s, ifp); |
718e3744 | 1236 | |
d62a17ae | 1237 | return ifp; |
718e3744 | 1238 | } |
1239 | ||
d62a17ae | 1240 | /* |
0a589359 | 1241 | * Read interface up/down msg (ZEBRA_INTERFACE_UP/ZEBRA_INTERFACE_DOWN) |
1242 | * from zebra server. The format of this message is the same as | |
1243 | * that sent for ZEBRA_INTERFACE_ADD/ZEBRA_INTERFACE_DELETE (see | |
1244 | * comments for zebra_interface_add_read), except that no sockaddr_dl | |
1245 | * is sent at the tail of the message. | |
1246 | */ | |
d62a17ae | 1247 | struct interface *zebra_interface_state_read(struct stream *s, vrf_id_t vrf_id) |
718e3744 | 1248 | { |
d62a17ae | 1249 | struct interface *ifp; |
1250 | char ifname_tmp[INTERFACE_NAMSIZ]; | |
1251 | ||
1252 | /* Read interface name. */ | |
1253 | stream_get(ifname_tmp, s, INTERFACE_NAMSIZ); | |
1254 | ||
1255 | /* Lookup this by interface index. */ | |
bcc24579 | 1256 | ifp = if_lookup_by_name(ifname_tmp, vrf_id); |
d62a17ae | 1257 | if (ifp == NULL) { |
1258 | zlog_warn("INTERFACE_STATE: Cannot find IF %s in VRF %d", | |
1259 | ifname_tmp, vrf_id); | |
1260 | return NULL; | |
1261 | } | |
1262 | ||
1263 | zebra_interface_if_set_value(s, ifp); | |
1264 | ||
1265 | return ifp; | |
718e3744 | 1266 | } |
1267 | ||
d62a17ae | 1268 | static void link_params_set_value(struct stream *s, struct if_link_params *iflp) |
16f1b9ee OD |
1269 | { |
1270 | ||
d62a17ae | 1271 | if (iflp == NULL) |
1272 | return; | |
1273 | ||
1274 | iflp->lp_status = stream_getl(s); | |
1275 | iflp->te_metric = stream_getl(s); | |
1276 | iflp->max_bw = stream_getf(s); | |
1277 | iflp->max_rsv_bw = stream_getf(s); | |
1278 | uint32_t bwclassnum = stream_getl(s); | |
1279 | { | |
1280 | unsigned int i; | |
1281 | for (i = 0; i < bwclassnum && i < MAX_CLASS_TYPE; i++) | |
1282 | iflp->unrsv_bw[i] = stream_getf(s); | |
1283 | if (i < bwclassnum) | |
1284 | zlog_err( | |
1285 | "%s: received %d > %d (MAX_CLASS_TYPE) bw entries" | |
1286 | " - outdated library?", | |
1287 | __func__, bwclassnum, MAX_CLASS_TYPE); | |
1288 | } | |
1289 | iflp->admin_grp = stream_getl(s); | |
1290 | iflp->rmt_as = stream_getl(s); | |
1291 | iflp->rmt_ip.s_addr = stream_get_ipv4(s); | |
1292 | ||
1293 | iflp->av_delay = stream_getl(s); | |
1294 | iflp->min_delay = stream_getl(s); | |
1295 | iflp->max_delay = stream_getl(s); | |
1296 | iflp->delay_var = stream_getl(s); | |
1297 | ||
1298 | iflp->pkt_loss = stream_getf(s); | |
1299 | iflp->res_bw = stream_getf(s); | |
1300 | iflp->ava_bw = stream_getf(s); | |
1301 | iflp->use_bw = stream_getf(s); | |
16f1b9ee OD |
1302 | } |
1303 | ||
d62a17ae | 1304 | struct interface *zebra_interface_link_params_read(struct stream *s) |
16f1b9ee | 1305 | { |
d62a17ae | 1306 | struct if_link_params *iflp; |
1307 | ifindex_t ifindex; | |
c28e5b2a | 1308 | |
d62a17ae | 1309 | assert(s); |
c28e5b2a | 1310 | |
d62a17ae | 1311 | ifindex = stream_getl(s); |
16f1b9ee | 1312 | |
d62a17ae | 1313 | struct interface *ifp = if_lookup_by_index(ifindex, VRF_DEFAULT); |
16f1b9ee | 1314 | |
d62a17ae | 1315 | if (ifp == NULL) { |
1316 | zlog_err("%s: unknown ifindex %u, shouldn't happen", __func__, | |
1317 | ifindex); | |
1318 | return NULL; | |
1319 | } | |
16f1b9ee | 1320 | |
d62a17ae | 1321 | if ((iflp = if_link_params_get(ifp)) == NULL) |
1322 | return NULL; | |
16f1b9ee | 1323 | |
d62a17ae | 1324 | link_params_set_value(s, iflp); |
16f1b9ee | 1325 | |
d62a17ae | 1326 | return ifp; |
16f1b9ee OD |
1327 | } |
1328 | ||
d62a17ae | 1329 | void zebra_interface_if_set_value(struct stream *s, struct interface *ifp) |
16f1b9ee | 1330 | { |
d62a17ae | 1331 | u_char link_params_status = 0; |
1332 | ||
1333 | /* Read interface's index. */ | |
ff880b78 | 1334 | if_set_index(ifp, stream_getl(s)); |
d62a17ae | 1335 | ifp->status = stream_getc(s); |
1336 | ||
1337 | /* Read interface's value. */ | |
1338 | ifp->flags = stream_getq(s); | |
1339 | ifp->ptm_enable = stream_getc(s); | |
1340 | ifp->ptm_status = stream_getc(s); | |
1341 | ifp->metric = stream_getl(s); | |
1342 | ifp->speed = stream_getl(s); | |
1343 | ifp->mtu = stream_getl(s); | |
1344 | ifp->mtu6 = stream_getl(s); | |
1345 | ifp->bandwidth = stream_getl(s); | |
1346 | ifp->ll_type = stream_getl(s); | |
1347 | ifp->hw_addr_len = stream_getl(s); | |
1348 | if (ifp->hw_addr_len) | |
1349 | stream_get(ifp->hw_addr, s, | |
1350 | MIN(ifp->hw_addr_len, INTERFACE_HWADDR_MAX)); | |
1351 | ||
1352 | /* Read Traffic Engineering status */ | |
1353 | link_params_status = stream_getc(s); | |
1354 | /* Then, Traffic Engineering parameters if any */ | |
1355 | if (link_params_status) { | |
1356 | struct if_link_params *iflp = if_link_params_get(ifp); | |
1357 | link_params_set_value(s, iflp); | |
1358 | } | |
16f1b9ee OD |
1359 | } |
1360 | ||
d62a17ae | 1361 | size_t zebra_interface_link_params_write(struct stream *s, |
1362 | struct interface *ifp) | |
16f1b9ee | 1363 | { |
d62a17ae | 1364 | size_t w; |
1365 | struct if_link_params *iflp; | |
1366 | int i; | |
16f1b9ee | 1367 | |
d62a17ae | 1368 | if (s == NULL || ifp == NULL || ifp->link_params == NULL) |
1369 | return 0; | |
16f1b9ee | 1370 | |
d62a17ae | 1371 | iflp = ifp->link_params; |
1372 | w = 0; | |
16f1b9ee | 1373 | |
d62a17ae | 1374 | w += stream_putl(s, iflp->lp_status); |
16f1b9ee | 1375 | |
d62a17ae | 1376 | w += stream_putl(s, iflp->te_metric); |
1377 | w += stream_putf(s, iflp->max_bw); | |
1378 | w += stream_putf(s, iflp->max_rsv_bw); | |
16f1b9ee | 1379 | |
d62a17ae | 1380 | w += stream_putl(s, MAX_CLASS_TYPE); |
1381 | for (i = 0; i < MAX_CLASS_TYPE; i++) | |
1382 | w += stream_putf(s, iflp->unrsv_bw[i]); | |
16f1b9ee | 1383 | |
d62a17ae | 1384 | w += stream_putl(s, iflp->admin_grp); |
1385 | w += stream_putl(s, iflp->rmt_as); | |
1386 | w += stream_put_in_addr(s, &iflp->rmt_ip); | |
16f1b9ee | 1387 | |
d62a17ae | 1388 | w += stream_putl(s, iflp->av_delay); |
1389 | w += stream_putl(s, iflp->min_delay); | |
1390 | w += stream_putl(s, iflp->max_delay); | |
1391 | w += stream_putl(s, iflp->delay_var); | |
16f1b9ee | 1392 | |
d62a17ae | 1393 | w += stream_putf(s, iflp->pkt_loss); |
1394 | w += stream_putf(s, iflp->res_bw); | |
1395 | w += stream_putf(s, iflp->ava_bw); | |
1396 | w += stream_putf(s, iflp->use_bw); | |
16f1b9ee | 1397 | |
d62a17ae | 1398 | return w; |
16f1b9ee OD |
1399 | } |
1400 | ||
1401 | /* | |
0a589359 | 1402 | * format of message for address additon is: |
1403 | * 0 | |
1404 | * 0 1 2 3 4 5 6 7 | |
1405 | * +-+-+-+-+-+-+-+-+ | |
1406 | * | type | ZEBRA_INTERFACE_ADDRESS_ADD or | |
1407 | * +-+-+-+-+-+-+-+-+ ZEBRA_INTERFACE_ADDRES_DELETE | |
1408 | * | | | |
1409 | * + + | |
1410 | * | ifindex | | |
1411 | * + + | |
1412 | * | | | |
1413 | * + + | |
1414 | * | | | |
1415 | * +-+-+-+-+-+-+-+-+ | |
1416 | * | ifc_flags | flags for connected address | |
1417 | * +-+-+-+-+-+-+-+-+ | |
1418 | * | addr_family | | |
1419 | * +-+-+-+-+-+-+-+-+ | |
1420 | * | addr... | | |
1421 | * : : | |
1422 | * | | | |
1423 | * +-+-+-+-+-+-+-+-+ | |
1424 | * | addr_len | len of addr. E.g., addr_len = 4 for ipv4 addrs. | |
1425 | * +-+-+-+-+-+-+-+-+ | |
1426 | * | daddr.. | | |
1427 | * : : | |
1428 | * | | | |
1429 | * +-+-+-+-+-+-+-+-+ | |
0a589359 | 1430 | */ |
1431 | ||
d62a17ae | 1432 | static int memconstant(const void *s, int c, size_t n) |
3fb9cd6e | 1433 | { |
d62a17ae | 1434 | const u_char *p = s; |
3fb9cd6e | 1435 | |
d62a17ae | 1436 | while (n-- > 0) |
1437 | if (*p++ != c) | |
1438 | return 0; | |
1439 | return 1; | |
3fb9cd6e | 1440 | } |
1441 | ||
d5a5c8f0 | 1442 | |
d62a17ae | 1443 | struct connected *zebra_interface_address_read(int type, struct stream *s, |
1444 | vrf_id_t vrf_id) | |
718e3744 | 1445 | { |
d62a17ae | 1446 | ifindex_t ifindex; |
1447 | struct interface *ifp; | |
1448 | struct connected *ifc; | |
1449 | struct prefix p, d, *dp; | |
1450 | int plen; | |
1451 | u_char ifc_flags; | |
1452 | ||
1453 | memset(&p, 0, sizeof(p)); | |
1454 | memset(&d, 0, sizeof(d)); | |
1455 | ||
1456 | /* Get interface index. */ | |
1457 | ifindex = stream_getl(s); | |
1458 | ||
1459 | /* Lookup index. */ | |
1460 | ifp = if_lookup_by_index(ifindex, vrf_id); | |
1461 | if (ifp == NULL) { | |
1462 | zlog_warn("INTERFACE_ADDRESS_%s: Cannot find IF %u in VRF %d", | |
1463 | (type == ZEBRA_INTERFACE_ADDRESS_ADD) ? "ADD" : "DEL", | |
1464 | ifindex, vrf_id); | |
1465 | return NULL; | |
1466 | } | |
1467 | ||
1468 | /* Fetch flag. */ | |
1469 | ifc_flags = stream_getc(s); | |
1470 | ||
1471 | /* Fetch interface address. */ | |
1472 | d.family = p.family = stream_getc(s); | |
1473 | plen = prefix_blen(&d); | |
1474 | ||
1475 | zclient_stream_get_prefix(s, &p); | |
1476 | ||
1477 | /* Fetch destination address. */ | |
1478 | stream_get(&d.u.prefix, s, plen); | |
1479 | ||
1480 | /* N.B. NULL destination pointers are encoded as all zeroes */ | |
1481 | dp = memconstant(&d.u.prefix, 0, plen) ? NULL : &d; | |
1482 | ||
1483 | if (type == ZEBRA_INTERFACE_ADDRESS_ADD) { | |
1484 | ifc = connected_lookup_prefix_exact(ifp, &p); | |
1485 | if (!ifc) { | |
1486 | /* N.B. NULL destination pointers are encoded as all | |
1487 | * zeroes */ | |
1488 | ifc = connected_add_by_prefix(ifp, &p, dp); | |
1489 | } | |
1490 | if (ifc) { | |
1491 | ifc->flags = ifc_flags; | |
1492 | if (ifc->destination) | |
1493 | ifc->destination->prefixlen = | |
1494 | ifc->address->prefixlen; | |
1495 | else if (CHECK_FLAG(ifc->flags, ZEBRA_IFA_PEER)) { | |
1496 | /* carp interfaces on OpenBSD with 0.0.0.0/0 as | |
1497 | * "peer" */ | |
1498 | char buf[PREFIX_STRLEN]; | |
1499 | zlog_warn( | |
1500 | "warning: interface %s address %s " | |
1501 | "with peer flag set, but no peer address!", | |
9d303b37 DL |
1502 | ifp->name, prefix2str(ifc->address, buf, |
1503 | sizeof buf)); | |
d62a17ae | 1504 | UNSET_FLAG(ifc->flags, ZEBRA_IFA_PEER); |
1505 | } | |
1506 | } | |
1507 | } else { | |
1508 | assert(type == ZEBRA_INTERFACE_ADDRESS_DELETE); | |
1509 | ifc = connected_delete_by_prefix(ifp, &p); | |
1510 | } | |
1511 | ||
1512 | return ifc; | |
718e3744 | 1513 | } |
0a589359 | 1514 | |
a80beece DS |
1515 | /* |
1516 | * format of message for neighbor connected address is: | |
1517 | * 0 | |
1518 | * 0 1 2 3 4 5 6 7 | |
1519 | * +-+-+-+-+-+-+-+-+ | |
1520 | * | type | ZEBRA_INTERFACE_NBR_ADDRESS_ADD or | |
1521 | * +-+-+-+-+-+-+-+-+ ZEBRA_INTERFACE_NBR_ADDRES_DELETE | |
1522 | * | | | |
1523 | * + + | |
1524 | * | ifindex | | |
1525 | * + + | |
1526 | * | | | |
1527 | * + + | |
1528 | * | | | |
1529 | * +-+-+-+-+-+-+-+-+ | |
1530 | * | addr_family | | |
1531 | * +-+-+-+-+-+-+-+-+ | |
1532 | * | addr... | | |
1533 | * : : | |
1534 | * | | | |
1535 | * +-+-+-+-+-+-+-+-+ | |
1536 | * | addr_len | len of addr. | |
1537 | * +-+-+-+-+-+-+-+-+ | |
1538 | */ | |
1539 | struct nbr_connected * | |
d62a17ae | 1540 | zebra_interface_nbr_address_read(int type, struct stream *s, vrf_id_t vrf_id) |
a80beece | 1541 | { |
d62a17ae | 1542 | unsigned int ifindex; |
1543 | struct interface *ifp; | |
1544 | struct prefix p; | |
1545 | struct nbr_connected *ifc; | |
1546 | ||
1547 | /* Get interface index. */ | |
1548 | ifindex = stream_getl(s); | |
1549 | ||
1550 | /* Lookup index. */ | |
1551 | ifp = if_lookup_by_index(ifindex, vrf_id); | |
1552 | if (ifp == NULL) { | |
1553 | zlog_warn("INTERFACE_NBR_%s: Cannot find IF %u in VRF %d", | |
1554 | (type == ZEBRA_INTERFACE_NBR_ADDRESS_ADD) ? "ADD" | |
1555 | : "DELETE", | |
1556 | ifindex, vrf_id); | |
1557 | return NULL; | |
1558 | } | |
1559 | ||
1560 | p.family = stream_getc(s); | |
1561 | stream_get(&p.u.prefix, s, prefix_blen(&p)); | |
1562 | p.prefixlen = stream_getc(s); | |
1563 | ||
1564 | if (type == ZEBRA_INTERFACE_NBR_ADDRESS_ADD) { | |
1565 | /* Currently only supporting P2P links, so any new RA source | |
1566 | address is | |
1567 | considered as the replacement of the previously learnt | |
1568 | Link-Local address. */ | |
1569 | if (!(ifc = listnode_head(ifp->nbr_connected))) { | |
1570 | ifc = nbr_connected_new(); | |
1571 | ifc->address = prefix_new(); | |
1572 | ifc->ifp = ifp; | |
1573 | listnode_add(ifp->nbr_connected, ifc); | |
1574 | } | |
1575 | ||
1576 | prefix_copy(ifc->address, &p); | |
1577 | } else { | |
1578 | assert(type == ZEBRA_INTERFACE_NBR_ADDRESS_DELETE); | |
1579 | ||
1580 | ifc = nbr_connected_check(ifp, &p); | |
1581 | if (ifc) | |
1582 | listnode_delete(ifp->nbr_connected, ifc); | |
1583 | } | |
1584 | ||
1585 | return ifc; | |
a80beece | 1586 | } |
6b0655a2 | 1587 | |
d62a17ae | 1588 | struct interface *zebra_interface_vrf_update_read(struct stream *s, |
1589 | vrf_id_t vrf_id, | |
1590 | vrf_id_t *new_vrf_id) | |
c8e264b6 | 1591 | { |
d62a17ae | 1592 | unsigned int ifindex; |
1593 | struct interface *ifp; | |
1594 | vrf_id_t new_id = VRF_DEFAULT; | |
1595 | ||
1596 | /* Get interface index. */ | |
1597 | ifindex = stream_getl(s); | |
1598 | ||
1599 | /* Lookup interface. */ | |
1600 | ifp = if_lookup_by_index(ifindex, vrf_id); | |
1601 | if (ifp == NULL) { | |
1602 | zlog_warn("INTERFACE_VRF_UPDATE: Cannot find IF %u in VRF %d", | |
1603 | ifindex, vrf_id); | |
1604 | return NULL; | |
1605 | } | |
1606 | ||
1607 | /* Fetch new VRF Id. */ | |
1608 | new_id = stream_getw(s); | |
1609 | ||
1610 | *new_vrf_id = new_id; | |
1611 | return ifp; | |
c8e264b6 | 1612 | } |
5c7ef8dc | 1613 | |
1614 | /* filter unwanted messages until the expected one arrives */ | |
d62a17ae | 1615 | static int zclient_read_sync_response(struct zclient *zclient, |
1616 | u_int16_t expected_cmd) | |
5c7ef8dc | 1617 | { |
d62a17ae | 1618 | struct stream *s; |
c31a793b | 1619 | u_int16_t size = -1; |
d62a17ae | 1620 | u_char marker; |
1621 | u_char version; | |
1622 | vrf_id_t vrf_id; | |
1623 | u_int16_t cmd; | |
1624 | fd_set readfds; | |
1625 | int ret; | |
1626 | ||
1627 | ret = 0; | |
1628 | cmd = expected_cmd + 1; | |
1629 | while (ret == 0 && cmd != expected_cmd) { | |
1630 | s = zclient->ibuf; | |
1631 | stream_reset(s); | |
1632 | ||
1633 | /* wait until response arrives */ | |
1634 | FD_ZERO(&readfds); | |
1635 | FD_SET(zclient->sock, &readfds); | |
1636 | select(zclient->sock + 1, &readfds, NULL, NULL, NULL); | |
1637 | if (!FD_ISSET(zclient->sock, &readfds)) | |
1638 | continue; | |
1639 | /* read response */ | |
1640 | ret = zclient_read_header(s, zclient->sock, &size, &marker, | |
1641 | &version, &vrf_id, &cmd); | |
1642 | if (zclient_debug) | |
1643 | zlog_debug("%s: Response (%d bytes) received", __func__, | |
1644 | size); | |
1645 | } | |
1646 | if (ret != 0) { | |
1647 | zlog_err("%s: Invalid Sync Message Reply", __func__); | |
1648 | return -1; | |
1649 | } | |
1650 | ||
1651 | return 0; | |
5c7ef8dc | 1652 | } |
fea12efb | 1653 | /** |
1654 | * Connect to label manager in a syncronous way | |
1655 | * | |
1656 | * It first writes the request to zcient output buffer and then | |
1657 | * immediately reads the answer from the input buffer. | |
1658 | * | |
1659 | * @param zclient Zclient used to connect to label manager (zebra) | |
1660 | * @result Result of response | |
1661 | */ | |
d62a17ae | 1662 | int lm_label_manager_connect(struct zclient *zclient) |
fea12efb | 1663 | { |
d62a17ae | 1664 | int ret; |
1665 | struct stream *s; | |
1666 | u_char result; | |
1667 | ||
1668 | if (zclient_debug) | |
1669 | zlog_debug("Connecting to Label Manager"); | |
1670 | ||
1671 | if (zclient->sock < 0) | |
1672 | return -1; | |
1673 | ||
1674 | /* send request */ | |
1675 | s = zclient->obuf; | |
1676 | stream_reset(s); | |
1677 | zclient_create_header(s, ZEBRA_LABEL_MANAGER_CONNECT, VRF_DEFAULT); | |
1678 | ||
1679 | /* proto */ | |
1680 | stream_putc(s, zclient->redist_default); | |
1681 | /* instance */ | |
1682 | stream_putw(s, zclient->instance); | |
1683 | ||
1684 | /* Put length at the first point of the stream. */ | |
1685 | stream_putw_at(s, 0, stream_get_endp(s)); | |
1686 | ||
1687 | ret = writen(zclient->sock, s->data, stream_get_endp(s)); | |
1688 | if (ret < 0) { | |
1689 | zlog_err("%s: can't write to zclient->sock", __func__); | |
1690 | close(zclient->sock); | |
1691 | zclient->sock = -1; | |
1692 | return -1; | |
1693 | } | |
1694 | if (ret == 0) { | |
1695 | zlog_err("%s: zclient->sock connection closed", __func__); | |
1696 | close(zclient->sock); | |
1697 | zclient->sock = -1; | |
1698 | return -1; | |
1699 | } | |
1700 | if (zclient_debug) | |
1701 | zlog_debug("%s: Label manager connect request (%d bytes) sent", | |
1702 | __func__, ret); | |
1703 | ||
1704 | /* read response */ | |
1705 | if (zclient_read_sync_response(zclient, ZEBRA_LABEL_MANAGER_CONNECT) | |
1706 | != 0) | |
1707 | return -1; | |
1708 | ||
1709 | /* result */ | |
1710 | s = zclient->ibuf; | |
1711 | result = stream_getc(s); | |
1712 | if (zclient_debug) | |
1713 | zlog_debug( | |
1714 | "%s: Label Manager connect response received, result %u", | |
1715 | __func__, result); | |
1716 | ||
1717 | return (int)result; | |
fea12efb | 1718 | } |
1719 | ||
1720 | /** | |
1721 | * Function to request a label chunk in a syncronous way | |
1722 | * | |
1723 | * It first writes the request to zlcient output buffer and then | |
1724 | * immediately reads the answer from the input buffer. | |
1725 | * | |
1726 | * @param zclient Zclient used to connect to label manager (zebra) | |
1727 | * @param keep Avoid garbage collection | |
1728 | * @param chunk_size Amount of labels requested | |
1729 | * @param start To write first assigned chunk label to | |
1730 | * @param end To write last assigned chunk label to | |
1731 | * @result 0 on success, -1 otherwise | |
1732 | */ | |
d62a17ae | 1733 | int lm_get_label_chunk(struct zclient *zclient, u_char keep, |
1734 | uint32_t chunk_size, uint32_t *start, uint32_t *end) | |
fea12efb | 1735 | { |
d62a17ae | 1736 | int ret; |
1737 | struct stream *s; | |
1738 | u_char response_keep; | |
1739 | ||
1740 | if (zclient_debug) | |
1741 | zlog_debug("Getting Label Chunk"); | |
1742 | ||
1743 | if (zclient->sock < 0) | |
1744 | return -1; | |
1745 | ||
1746 | /* send request */ | |
1747 | s = zclient->obuf; | |
1748 | stream_reset(s); | |
1749 | zclient_create_header(s, ZEBRA_GET_LABEL_CHUNK, VRF_DEFAULT); | |
1750 | /* keep */ | |
1751 | stream_putc(s, keep); | |
1752 | /* chunk size */ | |
1753 | stream_putl(s, chunk_size); | |
1754 | /* Put length at the first point of the stream. */ | |
1755 | stream_putw_at(s, 0, stream_get_endp(s)); | |
1756 | ||
1757 | ret = writen(zclient->sock, s->data, stream_get_endp(s)); | |
1758 | if (ret < 0) { | |
1759 | zlog_err("%s: can't write to zclient->sock", __func__); | |
1760 | close(zclient->sock); | |
1761 | zclient->sock = -1; | |
1762 | return -1; | |
1763 | } | |
1764 | if (ret == 0) { | |
1765 | zlog_err("%s: zclient->sock connection closed", __func__); | |
1766 | close(zclient->sock); | |
1767 | zclient->sock = -1; | |
1768 | return -1; | |
1769 | } | |
1770 | if (zclient_debug) | |
1771 | zlog_debug("%s: Label chunk request (%d bytes) sent", __func__, | |
1772 | ret); | |
1773 | ||
1774 | /* read response */ | |
1775 | if (zclient_read_sync_response(zclient, ZEBRA_GET_LABEL_CHUNK) != 0) | |
1776 | return -1; | |
1777 | ||
1778 | s = zclient->ibuf; | |
1779 | /* keep */ | |
1780 | response_keep = stream_getc(s); | |
1781 | /* start and end labels */ | |
1782 | *start = stream_getl(s); | |
1783 | *end = stream_getl(s); | |
1784 | ||
1785 | /* not owning this response */ | |
1786 | if (keep != response_keep) { | |
1787 | zlog_err( | |
1788 | "%s: Invalid Label chunk: %u - %u, keeps mismatch %u != %u", | |
1789 | __func__, *start, *end, keep, response_keep); | |
1790 | } | |
1791 | /* sanity */ | |
1792 | if (*start > *end || *start < MPLS_MIN_UNRESERVED_LABEL | |
1793 | || *end > MPLS_MAX_UNRESERVED_LABEL) { | |
1794 | zlog_err("%s: Invalid Label chunk: %u - %u", __func__, *start, | |
1795 | *end); | |
1796 | return -1; | |
1797 | } | |
1798 | ||
1799 | if (zclient_debug) | |
1800 | zlog_debug("Label Chunk assign: %u - %u (%u) ", *start, *end, | |
1801 | response_keep); | |
1802 | ||
1803 | return 0; | |
fea12efb | 1804 | } |
1805 | ||
1806 | /** | |
1807 | * Function to release a label chunk | |
1808 | * | |
1809 | * @param zclient Zclient used to connect to label manager (zebra) | |
1810 | * @param start First label of chunk | |
1811 | * @param end Last label of chunk | |
1812 | * @result 0 on success, -1 otherwise | |
1813 | */ | |
d62a17ae | 1814 | int lm_release_label_chunk(struct zclient *zclient, uint32_t start, |
1815 | uint32_t end) | |
fea12efb | 1816 | { |
d62a17ae | 1817 | int ret; |
1818 | struct stream *s; | |
1819 | ||
1820 | if (zclient_debug) | |
1821 | zlog_debug("Releasing Label Chunk"); | |
1822 | ||
1823 | if (zclient->sock < 0) | |
1824 | return -1; | |
1825 | ||
1826 | /* send request */ | |
1827 | s = zclient->obuf; | |
1828 | stream_reset(s); | |
1829 | zclient_create_header(s, ZEBRA_RELEASE_LABEL_CHUNK, VRF_DEFAULT); | |
1830 | ||
1831 | /* start */ | |
1832 | stream_putl(s, start); | |
1833 | /* end */ | |
1834 | stream_putl(s, end); | |
1835 | ||
1836 | /* Put length at the first point of the stream. */ | |
1837 | stream_putw_at(s, 0, stream_get_endp(s)); | |
1838 | ||
1839 | ret = writen(zclient->sock, s->data, stream_get_endp(s)); | |
1840 | if (ret < 0) { | |
1841 | zlog_err("%s: can't write to zclient->sock", __func__); | |
1842 | close(zclient->sock); | |
1843 | zclient->sock = -1; | |
1844 | return -1; | |
1845 | } | |
1846 | if (ret == 0) { | |
1847 | zlog_err("%s: zclient->sock connection closed", __func__); | |
1848 | close(zclient->sock); | |
1849 | zclient->sock = -1; | |
1850 | return -1; | |
1851 | } | |
1852 | ||
1853 | return 0; | |
fea12efb | 1854 | } |
c8e264b6 | 1855 | |
6833ae01 | 1856 | int zebra_send_pw(struct zclient *zclient, int command, struct zapi_pw *pw) |
1857 | { | |
1858 | struct stream *s; | |
1859 | ||
1860 | /* Reset stream. */ | |
1861 | s = zclient->obuf; | |
1862 | stream_reset(s); | |
1863 | ||
1864 | zclient_create_header(s, command, VRF_DEFAULT); | |
1865 | stream_write(s, pw->ifname, IF_NAMESIZE); | |
1866 | stream_putl(s, pw->ifindex); | |
1867 | ||
1868 | /* Put type */ | |
1869 | stream_putl(s, pw->type); | |
1870 | ||
1871 | /* Put nexthop */ | |
1872 | stream_putl(s, pw->af); | |
1873 | switch (pw->af) { | |
1874 | case AF_INET: | |
1875 | stream_put_in_addr(s, &pw->nexthop.ipv4); | |
1876 | break; | |
1877 | case AF_INET6: | |
1878 | stream_write(s, (u_char *)&pw->nexthop.ipv6, 16); | |
1879 | break; | |
1880 | default: | |
1881 | zlog_err("%s: unknown af", __func__); | |
1882 | return -1; | |
1883 | } | |
1884 | ||
1885 | /* Put labels */ | |
1886 | stream_putl(s, pw->local_label); | |
1887 | stream_putl(s, pw->remote_label); | |
1888 | ||
1889 | /* Put flags */ | |
1890 | stream_putc(s, pw->flags); | |
1891 | ||
1892 | /* Protocol specific fields */ | |
1893 | stream_write(s, &pw->data, sizeof(union pw_protocol_fields)); | |
1894 | ||
1895 | /* Put length at the first point of the stream. */ | |
1896 | stream_putw_at(s, 0, stream_get_endp(s)); | |
1897 | ||
1898 | return zclient_send_message(zclient); | |
1899 | } | |
1900 | ||
1901 | /* | |
1902 | * Receive PW status update from Zebra and send it to LDE process. | |
1903 | */ | |
1904 | void zebra_read_pw_status_update(int command, struct zclient *zclient, | |
1905 | zebra_size_t length, vrf_id_t vrf_id, | |
1906 | struct zapi_pw_status *pw) | |
1907 | { | |
1908 | struct stream *s; | |
1909 | ||
1910 | memset(pw, 0, sizeof(struct zapi_pw_status)); | |
1911 | s = zclient->ibuf; | |
1912 | ||
1913 | /* Get data. */ | |
1914 | stream_get(pw->ifname, s, IF_NAMESIZE); | |
1915 | pw->ifindex = stream_getl(s); | |
1916 | pw->status = stream_getl(s); | |
1917 | } | |
1918 | ||
718e3744 | 1919 | /* Zebra client message read function. */ |
d62a17ae | 1920 | static int zclient_read(struct thread *thread) |
718e3744 | 1921 | { |
d62a17ae | 1922 | size_t already; |
1923 | uint16_t length, command; | |
1924 | uint8_t marker, version; | |
1925 | vrf_id_t vrf_id; | |
1926 | struct zclient *zclient; | |
1927 | ||
1928 | /* Get socket to zebra. */ | |
1929 | zclient = THREAD_ARG(thread); | |
1930 | zclient->t_read = NULL; | |
1931 | ||
1932 | /* Read zebra header (if we don't have it already). */ | |
1933 | if ((already = stream_get_endp(zclient->ibuf)) < ZEBRA_HEADER_SIZE) { | |
1934 | ssize_t nbyte; | |
1935 | if (((nbyte = stream_read_try(zclient->ibuf, zclient->sock, | |
1936 | ZEBRA_HEADER_SIZE - already)) | |
1937 | == 0) | |
1938 | || (nbyte == -1)) { | |
1939 | if (zclient_debug) | |
1940 | zlog_debug( | |
1941 | "zclient connection closed socket [%d].", | |
1942 | zclient->sock); | |
1943 | return zclient_failed(zclient); | |
1944 | } | |
1945 | if (nbyte != (ssize_t)(ZEBRA_HEADER_SIZE - already)) { | |
1946 | /* Try again later. */ | |
1947 | zclient_event(ZCLIENT_READ, zclient); | |
1948 | return 0; | |
1949 | } | |
1950 | already = ZEBRA_HEADER_SIZE; | |
634f9ea2 | 1951 | } |
d62a17ae | 1952 | |
1953 | /* Reset to read from the beginning of the incoming packet. */ | |
1954 | stream_set_getp(zclient->ibuf, 0); | |
1955 | ||
1956 | /* Fetch header values. */ | |
1957 | length = stream_getw(zclient->ibuf); | |
1958 | marker = stream_getc(zclient->ibuf); | |
1959 | version = stream_getc(zclient->ibuf); | |
1960 | vrf_id = stream_getw(zclient->ibuf); | |
1961 | command = stream_getw(zclient->ibuf); | |
1962 | ||
1963 | if (marker != ZEBRA_HEADER_MARKER || version != ZSERV_VERSION) { | |
1964 | zlog_err( | |
1965 | "%s: socket %d version mismatch, marker %d, version %d", | |
1966 | __func__, zclient->sock, marker, version); | |
1967 | return zclient_failed(zclient); | |
634f9ea2 | 1968 | } |
d62a17ae | 1969 | |
1970 | if (length < ZEBRA_HEADER_SIZE) { | |
1971 | zlog_err("%s: socket %d message length %u is less than %d ", | |
1972 | __func__, zclient->sock, length, ZEBRA_HEADER_SIZE); | |
1973 | return zclient_failed(zclient); | |
634f9ea2 | 1974 | } |
d62a17ae | 1975 | |
1976 | /* Length check. */ | |
1977 | if (length > STREAM_SIZE(zclient->ibuf)) { | |
1978 | struct stream *ns; | |
1979 | zlog_warn( | |
1980 | "%s: message size %u exceeds buffer size %lu, expanding...", | |
1981 | __func__, length, (u_long)STREAM_SIZE(zclient->ibuf)); | |
1982 | ns = stream_new(length); | |
1983 | stream_copy(ns, zclient->ibuf); | |
1984 | stream_free(zclient->ibuf); | |
1985 | zclient->ibuf = ns; | |
1986 | } | |
1987 | ||
1988 | /* Read rest of zebra packet. */ | |
1989 | if (already < length) { | |
1990 | ssize_t nbyte; | |
1991 | if (((nbyte = stream_read_try(zclient->ibuf, zclient->sock, | |
1992 | length - already)) | |
1993 | == 0) | |
1994 | || (nbyte == -1)) { | |
1995 | if (zclient_debug) | |
1996 | zlog_debug( | |
1997 | "zclient connection closed socket [%d].", | |
1998 | zclient->sock); | |
1999 | return zclient_failed(zclient); | |
2000 | } | |
2001 | if (nbyte != (ssize_t)(length - already)) { | |
2002 | /* Try again later. */ | |
2003 | zclient_event(ZCLIENT_READ, zclient); | |
2004 | return 0; | |
2005 | } | |
2006 | } | |
2007 | ||
2008 | length -= ZEBRA_HEADER_SIZE; | |
2009 | ||
2010 | if (zclient_debug) | |
2011 | zlog_debug("zclient 0x%p command 0x%x VRF %u\n", | |
2012 | (void *)zclient, command, vrf_id); | |
2013 | ||
2014 | switch (command) { | |
2015 | case ZEBRA_ROUTER_ID_UPDATE: | |
2016 | if (zclient->router_id_update) | |
2017 | (*zclient->router_id_update)(command, zclient, length, | |
2018 | vrf_id); | |
2019 | break; | |
2020 | case ZEBRA_VRF_ADD: | |
2021 | zclient_vrf_add(zclient, vrf_id); | |
2022 | break; | |
2023 | case ZEBRA_VRF_DELETE: | |
2024 | zclient_vrf_delete(zclient, vrf_id); | |
2025 | break; | |
2026 | case ZEBRA_INTERFACE_ADD: | |
2027 | if (zclient->interface_add) | |
2028 | (*zclient->interface_add)(command, zclient, length, | |
2029 | vrf_id); | |
2030 | break; | |
2031 | case ZEBRA_INTERFACE_DELETE: | |
2032 | if (zclient->interface_delete) | |
2033 | (*zclient->interface_delete)(command, zclient, length, | |
2034 | vrf_id); | |
2035 | break; | |
2036 | case ZEBRA_INTERFACE_ADDRESS_ADD: | |
2037 | if (zclient->interface_address_add) | |
2038 | (*zclient->interface_address_add)(command, zclient, | |
2039 | length, vrf_id); | |
2040 | break; | |
2041 | case ZEBRA_INTERFACE_ADDRESS_DELETE: | |
2042 | if (zclient->interface_address_delete) | |
2043 | (*zclient->interface_address_delete)(command, zclient, | |
2044 | length, vrf_id); | |
2045 | break; | |
2046 | case ZEBRA_INTERFACE_BFD_DEST_UPDATE: | |
2047 | if (zclient->interface_bfd_dest_update) | |
2048 | (*zclient->interface_bfd_dest_update)(command, zclient, | |
2049 | length, vrf_id); | |
2050 | break; | |
2051 | case ZEBRA_INTERFACE_NBR_ADDRESS_ADD: | |
2052 | if (zclient->interface_nbr_address_add) | |
2053 | (*zclient->interface_nbr_address_add)(command, zclient, | |
2054 | length, vrf_id); | |
2055 | break; | |
2056 | case ZEBRA_INTERFACE_NBR_ADDRESS_DELETE: | |
2057 | if (zclient->interface_nbr_address_delete) | |
2058 | (*zclient->interface_nbr_address_delete)( | |
2059 | command, zclient, length, vrf_id); | |
2060 | break; | |
2061 | case ZEBRA_INTERFACE_UP: | |
2062 | if (zclient->interface_up) | |
2063 | (*zclient->interface_up)(command, zclient, length, | |
2064 | vrf_id); | |
2065 | break; | |
2066 | case ZEBRA_INTERFACE_DOWN: | |
2067 | if (zclient->interface_down) | |
2068 | (*zclient->interface_down)(command, zclient, length, | |
2069 | vrf_id); | |
2070 | break; | |
2071 | case ZEBRA_INTERFACE_VRF_UPDATE: | |
2072 | if (zclient->interface_vrf_update) | |
2073 | (*zclient->interface_vrf_update)(command, zclient, | |
2074 | length, vrf_id); | |
2075 | break; | |
2076 | case ZEBRA_NEXTHOP_UPDATE: | |
2077 | if (zclient_debug) | |
2078 | zlog_debug("zclient rcvd nexthop update\n"); | |
2079 | if (zclient->nexthop_update) | |
2080 | (*zclient->nexthop_update)(command, zclient, length, | |
2081 | vrf_id); | |
2082 | break; | |
2083 | case ZEBRA_IMPORT_CHECK_UPDATE: | |
2084 | if (zclient_debug) | |
2085 | zlog_debug("zclient rcvd import check update\n"); | |
2086 | if (zclient->import_check_update) | |
2087 | (*zclient->import_check_update)(command, zclient, | |
2088 | length, vrf_id); | |
2089 | break; | |
2090 | case ZEBRA_BFD_DEST_REPLAY: | |
2091 | if (zclient->bfd_dest_replay) | |
2092 | (*zclient->bfd_dest_replay)(command, zclient, length, | |
2093 | vrf_id); | |
2094 | break; | |
74489921 RW |
2095 | case ZEBRA_REDISTRIBUTE_ROUTE_ADD: |
2096 | if (zclient->redistribute_route_add) | |
2097 | (*zclient->redistribute_route_add)(command, zclient, | |
2098 | length, vrf_id); | |
d62a17ae | 2099 | break; |
74489921 RW |
2100 | case ZEBRA_REDISTRIBUTE_ROUTE_DEL: |
2101 | if (zclient->redistribute_route_del) | |
2102 | (*zclient->redistribute_route_del)(command, zclient, | |
2103 | length, vrf_id); | |
d62a17ae | 2104 | break; |
2105 | case ZEBRA_INTERFACE_LINK_PARAMS: | |
2106 | if (zclient->interface_link_params) | |
2107 | (*zclient->interface_link_params)(command, zclient, | |
2108 | length); | |
2109 | break; | |
2110 | case ZEBRA_FEC_UPDATE: | |
2111 | if (zclient_debug) | |
2112 | zlog_debug("zclient rcvd fec update\n"); | |
2113 | if (zclient->fec_update) | |
2114 | (*zclient->fec_update)(command, zclient, length); | |
2115 | break; | |
2116 | case ZEBRA_VNI_ADD: | |
2117 | if (zclient->local_vni_add) | |
2118 | (*zclient->local_vni_add)(command, zclient, length, | |
2119 | vrf_id); | |
2120 | break; | |
2121 | case ZEBRA_VNI_DEL: | |
2122 | if (zclient->local_vni_del) | |
2123 | (*zclient->local_vni_del)(command, zclient, length, | |
2124 | vrf_id); | |
2125 | break; | |
2126 | case ZEBRA_MACIP_ADD: | |
2127 | if (zclient->local_macip_add) | |
2128 | (*zclient->local_macip_add)(command, zclient, length, | |
2129 | vrf_id); | |
2130 | break; | |
2131 | case ZEBRA_MACIP_DEL: | |
2132 | if (zclient->local_macip_del) | |
2133 | (*zclient->local_macip_del)(command, zclient, length, | |
2134 | vrf_id); | |
2135 | break; | |
6833ae01 | 2136 | case ZEBRA_PW_STATUS_UPDATE: |
2137 | if (zclient->pw_status_update) | |
2138 | (*zclient->pw_status_update)(command, zclient, length, | |
2139 | vrf_id); | |
2140 | break; | |
d62a17ae | 2141 | default: |
2142 | break; | |
634f9ea2 | 2143 | } |
d62a17ae | 2144 | |
2145 | if (zclient->sock < 0) | |
2146 | /* Connection was closed during packet processing. */ | |
2147 | return -1; | |
2148 | ||
2149 | /* Register read thread. */ | |
2150 | stream_reset(zclient->ibuf); | |
2151 | zclient_event(ZCLIENT_READ, zclient); | |
2152 | ||
2153 | return 0; | |
718e3744 | 2154 | } |
2155 | ||
d62a17ae | 2156 | void zclient_redistribute(int command, struct zclient *zclient, afi_t afi, |
2157 | int type, u_short instance, vrf_id_t vrf_id) | |
718e3744 | 2158 | { |
718e3744 | 2159 | |
d62a17ae | 2160 | if (instance) { |
2161 | if (command == ZEBRA_REDISTRIBUTE_ADD) { | |
2162 | if (redist_check_instance( | |
2163 | &zclient->mi_redist[afi][type], instance)) | |
2164 | return; | |
2165 | redist_add_instance(&zclient->mi_redist[afi][type], | |
2166 | instance); | |
2167 | } else { | |
2168 | if (!redist_check_instance( | |
2169 | &zclient->mi_redist[afi][type], instance)) | |
2170 | return; | |
2171 | redist_del_instance(&zclient->mi_redist[afi][type], | |
2172 | instance); | |
2173 | } | |
2174 | ||
2175 | } else { | |
2176 | if (command == ZEBRA_REDISTRIBUTE_ADD) { | |
2177 | if (vrf_bitmap_check(zclient->redist[afi][type], | |
2178 | vrf_id)) | |
2179 | return; | |
2180 | vrf_bitmap_set(zclient->redist[afi][type], vrf_id); | |
2181 | } else { | |
2182 | if (!vrf_bitmap_check(zclient->redist[afi][type], | |
2183 | vrf_id)) | |
2184 | return; | |
2185 | vrf_bitmap_unset(zclient->redist[afi][type], vrf_id); | |
2186 | } | |
2187 | } | |
2188 | ||
2189 | if (zclient->sock > 0) | |
2190 | zebra_redistribute_send(command, zclient, afi, type, instance, | |
2191 | vrf_id); | |
718e3744 | 2192 | } |
2193 | ||
718e3744 | 2194 | |
d62a17ae | 2195 | void zclient_redistribute_default(int command, struct zclient *zclient, |
2196 | vrf_id_t vrf_id) | |
718e3744 | 2197 | { |
718e3744 | 2198 | |
d62a17ae | 2199 | if (command == ZEBRA_REDISTRIBUTE_DEFAULT_ADD) { |
2200 | if (vrf_bitmap_check(zclient->default_information, vrf_id)) | |
2201 | return; | |
2202 | vrf_bitmap_set(zclient->default_information, vrf_id); | |
2203 | } else { | |
2204 | if (!vrf_bitmap_check(zclient->default_information, vrf_id)) | |
2205 | return; | |
2206 | vrf_bitmap_unset(zclient->default_information, vrf_id); | |
2207 | } | |
2208 | ||
2209 | if (zclient->sock > 0) | |
2210 | zebra_message_send(zclient, command, vrf_id); | |
718e3744 | 2211 | } |
2212 | ||
d62a17ae | 2213 | static void zclient_event(enum event event, struct zclient *zclient) |
718e3744 | 2214 | { |
d62a17ae | 2215 | switch (event) { |
2216 | case ZCLIENT_SCHEDULE: | |
2217 | thread_add_event(zclient->master, zclient_connect, zclient, 0, | |
2218 | &zclient->t_connect); | |
2219 | break; | |
2220 | case ZCLIENT_CONNECT: | |
2221 | if (zclient_debug) | |
2222 | zlog_debug( | |
2223 | "zclient connect failures: %d schedule interval is now %d", | |
2224 | zclient->fail, zclient->fail < 3 ? 10 : 60); | |
2225 | thread_add_timer(zclient->master, zclient_connect, zclient, | |
2226 | zclient->fail < 3 ? 10 : 60, | |
2227 | &zclient->t_connect); | |
2228 | break; | |
2229 | case ZCLIENT_READ: | |
2230 | zclient->t_read = NULL; | |
2231 | thread_add_read(zclient->master, zclient_read, zclient, | |
2232 | zclient->sock, &zclient->t_read); | |
2233 | break; | |
2234 | } | |
718e3744 | 2235 | } |
b5114685 | 2236 | |
e0ae31b8 DS |
2237 | void zclient_interface_set_master(struct zclient *client, |
2238 | struct interface *master, | |
2239 | struct interface *slave) | |
2240 | { | |
2241 | struct stream *s; | |
2242 | ||
2243 | s = client->obuf; | |
2244 | stream_reset(s); | |
2245 | ||
2246 | zclient_create_header(s, ZEBRA_INTERFACE_SET_MASTER, master->vrf_id); | |
2247 | ||
2248 | stream_putw(s, master->vrf_id); | |
2249 | stream_putl(s, master->ifindex); | |
2250 | stream_putw(s, slave->vrf_id); | |
2251 | stream_putl(s, slave->ifindex); | |
2252 | ||
2253 | stream_putw_at(s, 0, stream_get_endp(s)); | |
2254 | zclient_send_message(client); | |
2255 | } |