]>
Commit | Line | Data |
---|---|---|
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" |
342213ea | 38 | #include "sockopt.h" |
6b0655a2 | 39 | |
4a1ab8e4 | 40 | DEFINE_MTYPE_STATIC(LIB, ZCLIENT, "Zclient") |
14878121 | 41 | DEFINE_MTYPE_STATIC(LIB, REDIST_INST, "Redistribution instance IDs") |
4a1ab8e4 | 42 | |
718e3744 | 43 | /* Zebra client events. */ |
d62a17ae | 44 | enum event { ZCLIENT_SCHEDULE, ZCLIENT_READ, ZCLIENT_CONNECT }; |
718e3744 | 45 | |
46 | /* Prototype for event manager. */ | |
d62a17ae | 47 | static void zclient_event(enum event, struct zclient *); |
718e3744 | 48 | |
689f5a8c DL |
49 | struct sockaddr_storage zclient_addr; |
50 | socklen_t zclient_addr_len; | |
b5114685 | 51 | |
718e3744 | 52 | /* This file local debug flag. */ |
53 | int zclient_debug = 0; | |
6b0655a2 | 54 | |
718e3744 | 55 | /* Allocate zclient structure. */ |
d62a17ae | 56 | struct zclient *zclient_new(struct thread_master *master) |
718e3744 | 57 | { |
d62a17ae | 58 | struct zclient *zclient; |
59 | zclient = XCALLOC(MTYPE_ZCLIENT, sizeof(struct zclient)); | |
718e3744 | 60 | |
d62a17ae | 61 | zclient->ibuf = stream_new(ZEBRA_MAX_PACKET_SIZ); |
62 | zclient->obuf = stream_new(ZEBRA_MAX_PACKET_SIZ); | |
63 | zclient->wb = buffer_new(0); | |
64 | zclient->master = master; | |
718e3744 | 65 | |
d62a17ae | 66 | return zclient; |
718e3744 | 67 | } |
68 | ||
228da428 | 69 | /* This function is only called when exiting, because |
634f9ea2 | 70 | many parts of the code do not check for I/O errors, so they could |
71 | reference an invalid pointer if the structure was ever freed. | |
634f9ea2 | 72 | |
228da428 | 73 | Free zclient structure. */ |
d62a17ae | 74 | void zclient_free(struct zclient *zclient) |
718e3744 | 75 | { |
d62a17ae | 76 | if (zclient->ibuf) |
77 | stream_free(zclient->ibuf); | |
78 | if (zclient->obuf) | |
79 | stream_free(zclient->obuf); | |
80 | if (zclient->wb) | |
81 | buffer_free(zclient->wb); | |
82 | ||
83 | XFREE(MTYPE_ZCLIENT, zclient); | |
718e3744 | 84 | } |
85 | ||
d62a17ae | 86 | u_short *redist_check_instance(struct redist_proto *red, u_short instance) |
7c8ff89e | 87 | { |
d62a17ae | 88 | struct listnode *node; |
89 | u_short *id; | |
7c8ff89e | 90 | |
d62a17ae | 91 | if (!red->instances) |
92 | return NULL; | |
7c8ff89e | 93 | |
d62a17ae | 94 | for (ALL_LIST_ELEMENTS_RO(red->instances, node, id)) |
95 | if (*id == instance) | |
96 | return id; | |
7c8ff89e | 97 | |
d62a17ae | 98 | return NULL; |
7c8ff89e DS |
99 | } |
100 | ||
d62a17ae | 101 | void redist_add_instance(struct redist_proto *red, u_short instance) |
7c8ff89e | 102 | { |
d62a17ae | 103 | u_short *in; |
7c8ff89e | 104 | |
d62a17ae | 105 | red->enabled = 1; |
7c8ff89e | 106 | |
d62a17ae | 107 | if (!red->instances) |
108 | red->instances = list_new(); | |
7c8ff89e | 109 | |
d62a17ae | 110 | in = XMALLOC(MTYPE_REDIST_INST, sizeof(u_short)); |
111 | *in = instance; | |
112 | listnode_add(red->instances, in); | |
7c8ff89e DS |
113 | } |
114 | ||
d62a17ae | 115 | void redist_del_instance(struct redist_proto *red, u_short instance) |
7c8ff89e | 116 | { |
d62a17ae | 117 | u_short *id; |
118 | ||
119 | id = redist_check_instance(red, instance); | |
120 | if (!id) | |
121 | return; | |
122 | ||
123 | listnode_delete(red->instances, id); | |
124 | XFREE(MTYPE_REDIST_INST, id); | |
125 | if (!red->instances->count) { | |
126 | red->enabled = 0; | |
acdf5e25 | 127 | list_delete_and_null(&red->instances); |
d62a17ae | 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 | |
342213ea DS |
184 | zclient_init(zclient, zclient->redist_default, |
185 | zclient->instance, zclient->privs); | |
718e3744 | 186 | } |
187 | ||
689f5a8c DL |
188 | /** |
189 | * Connect to zebra daemon. | |
190 | * @param zclient a pointer to zclient structure | |
191 | * @return socket fd just to make sure that connection established | |
192 | * @see zclient_init | |
193 | * @see zclient_new | |
194 | */ | |
195 | int zclient_socket_connect(struct zclient *zclient) | |
718e3744 | 196 | { |
d62a17ae | 197 | int sock; |
198 | int ret; | |
d62a17ae | 199 | |
200 | /* We should think about IPv6 connection. */ | |
689f5a8c | 201 | sock = socket(zclient_addr.ss_family, SOCK_STREAM, 0); |
d62a17ae | 202 | if (sock < 0) |
203 | return -1; | |
204 | ||
689f5a8c | 205 | set_cloexec(sock); |
d62a17ae | 206 | |
342213ea DS |
207 | zclient->privs->change(ZPRIVS_RAISE); |
208 | setsockopt_so_sendbuf(sock, 1048576); | |
209 | zclient->privs->change(ZPRIVS_LOWER); | |
210 | ||
d62a17ae | 211 | /* Connect to zebra. */ |
689f5a8c DL |
212 | ret = connect(sock, (struct sockaddr *)&zclient_addr, |
213 | zclient_addr_len); | |
d62a17ae | 214 | if (ret < 0) { |
215 | if (zclient_debug) | |
216 | zlog_warn("%s connect failure: %d(%s)", | |
217 | __PRETTY_FUNCTION__, errno, | |
218 | safe_strerror(errno)); | |
219 | close(sock); | |
220 | return -1; | |
221 | } | |
718e3744 | 222 | |
689f5a8c | 223 | zclient->sock = sock; |
d62a17ae | 224 | return sock; |
718e3744 | 225 | } |
226 | ||
d62a17ae | 227 | static int zclient_failed(struct zclient *zclient) |
634f9ea2 | 228 | { |
d62a17ae | 229 | zclient->fail++; |
230 | zclient_stop(zclient); | |
231 | zclient_event(ZCLIENT_CONNECT, zclient); | |
232 | return -1; | |
634f9ea2 | 233 | } |
234 | ||
d62a17ae | 235 | static int zclient_flush_data(struct thread *thread) |
634f9ea2 | 236 | { |
d62a17ae | 237 | struct zclient *zclient = THREAD_ARG(thread); |
238 | ||
239 | zclient->t_write = NULL; | |
240 | if (zclient->sock < 0) | |
241 | return -1; | |
242 | switch (buffer_flush_available(zclient->wb, zclient->sock)) { | |
243 | case BUFFER_ERROR: | |
244 | zlog_warn( | |
245 | "%s: buffer_flush_available failed on zclient fd %d, closing", | |
246 | __func__, zclient->sock); | |
247 | return zclient_failed(zclient); | |
248 | break; | |
249 | case BUFFER_PENDING: | |
250 | zclient->t_write = NULL; | |
251 | thread_add_write(zclient->master, zclient_flush_data, zclient, | |
252 | zclient->sock, &zclient->t_write); | |
253 | break; | |
254 | case BUFFER_EMPTY: | |
255 | break; | |
256 | } | |
257 | return 0; | |
634f9ea2 | 258 | } |
259 | ||
d62a17ae | 260 | int zclient_send_message(struct zclient *zclient) |
634f9ea2 | 261 | { |
d62a17ae | 262 | if (zclient->sock < 0) |
263 | return -1; | |
264 | switch (buffer_write(zclient->wb, zclient->sock, | |
265 | STREAM_DATA(zclient->obuf), | |
266 | stream_get_endp(zclient->obuf))) { | |
267 | case BUFFER_ERROR: | |
268 | zlog_warn("%s: buffer_write failed to zclient fd %d, closing", | |
269 | __func__, zclient->sock); | |
270 | return zclient_failed(zclient); | |
271 | break; | |
272 | case BUFFER_EMPTY: | |
273 | THREAD_OFF(zclient->t_write); | |
274 | break; | |
275 | case BUFFER_PENDING: | |
276 | thread_add_write(zclient->master, zclient_flush_data, zclient, | |
277 | zclient->sock, &zclient->t_write); | |
278 | break; | |
279 | } | |
280 | return 0; | |
634f9ea2 | 281 | } |
282 | ||
d62a17ae | 283 | void zclient_create_header(struct stream *s, uint16_t command, vrf_id_t vrf_id) |
c1b9800a | 284 | { |
d62a17ae | 285 | /* length placeholder, caller can update */ |
286 | stream_putw(s, ZEBRA_HEADER_SIZE); | |
287 | stream_putc(s, ZEBRA_HEADER_MARKER); | |
288 | stream_putc(s, ZSERV_VERSION); | |
289 | stream_putw(s, vrf_id); | |
290 | stream_putw(s, command); | |
c1b9800a | 291 | } |
292 | ||
d62a17ae | 293 | int zclient_read_header(struct stream *s, int sock, u_int16_t *size, |
294 | u_char *marker, u_char *version, vrf_id_t *vrf_id, | |
295 | u_int16_t *cmd) | |
55119089 | 296 | { |
d62a17ae | 297 | if (stream_read(s, sock, ZEBRA_HEADER_SIZE) != ZEBRA_HEADER_SIZE) |
298 | return -1; | |
299 | ||
300 | *size = stream_getw(s) - ZEBRA_HEADER_SIZE; | |
301 | *marker = stream_getc(s); | |
302 | *version = stream_getc(s); | |
303 | *vrf_id = stream_getw(s); | |
304 | *cmd = stream_getw(s); | |
305 | ||
306 | if (*version != ZSERV_VERSION || *marker != ZEBRA_HEADER_MARKER) { | |
307 | zlog_err( | |
308 | "%s: socket %d version mismatch, marker %d, version %d", | |
309 | __func__, sock, *marker, *version); | |
310 | return -1; | |
311 | } | |
312 | ||
313 | if (*size && stream_read(s, sock, *size) != *size) | |
314 | return -1; | |
315 | ||
316 | return 0; | |
55119089 ND |
317 | } |
318 | ||
634f9ea2 | 319 | /* Send simple Zebra message. */ |
d62a17ae | 320 | static int zebra_message_send(struct zclient *zclient, int command, |
321 | vrf_id_t vrf_id) | |
718e3744 | 322 | { |
d62a17ae | 323 | struct stream *s; |
718e3744 | 324 | |
d62a17ae | 325 | /* Get zclient output buffer. */ |
326 | s = zclient->obuf; | |
327 | stream_reset(s); | |
718e3744 | 328 | |
d62a17ae | 329 | /* Send very simple command only Zebra message. */ |
330 | zclient_create_header(s, command, vrf_id); | |
331 | ||
332 | return zclient_send_message(zclient); | |
718e3744 | 333 | } |
334 | ||
d62a17ae | 335 | static int zebra_hello_send(struct zclient *zclient) |
2ea1ab1c | 336 | { |
d62a17ae | 337 | struct stream *s; |
338 | ||
339 | if (zclient->redist_default) { | |
340 | s = zclient->obuf; | |
341 | stream_reset(s); | |
342 | ||
343 | /* The VRF ID in the HELLO message is always 0. */ | |
344 | zclient_create_header(s, ZEBRA_HELLO, VRF_DEFAULT); | |
345 | stream_putc(s, zclient->redist_default); | |
346 | stream_putw(s, zclient->instance); | |
347 | stream_putw_at(s, 0, stream_get_endp(s)); | |
348 | return zclient_send_message(zclient); | |
349 | } | |
350 | ||
351 | return 0; | |
2ea1ab1c VT |
352 | } |
353 | ||
0e5223e7 | 354 | /* Send register requests to zebra daemon for the information in a VRF. */ |
d62a17ae | 355 | void zclient_send_reg_requests(struct zclient *zclient, vrf_id_t vrf_id) |
7076bb2f | 356 | { |
d62a17ae | 357 | int i; |
358 | afi_t afi; | |
359 | ||
d62a17ae | 360 | /* If not connected to the zebra yet. */ |
361 | if (zclient->sock < 0) | |
362 | return; | |
363 | ||
364 | if (zclient_debug) | |
365 | zlog_debug("%s: send register messages for VRF %u", __func__, | |
366 | vrf_id); | |
367 | ||
368 | /* We need router-id information. */ | |
369 | zebra_message_send(zclient, ZEBRA_ROUTER_ID_ADD, vrf_id); | |
370 | ||
371 | /* We need interface information. */ | |
372 | zebra_message_send(zclient, ZEBRA_INTERFACE_ADD, vrf_id); | |
373 | ||
374 | /* Set unwanted redistribute route. */ | |
375 | for (afi = AFI_IP; afi < AFI_MAX; afi++) | |
376 | vrf_bitmap_set(zclient->redist[afi][zclient->redist_default], | |
377 | vrf_id); | |
378 | ||
379 | /* Flush all redistribute request. */ | |
380 | if (vrf_id == VRF_DEFAULT) | |
381 | for (afi = AFI_IP; afi < AFI_MAX; afi++) | |
382 | for (i = 0; i < ZEBRA_ROUTE_MAX; i++) | |
383 | if (zclient->mi_redist[afi][i].enabled) { | |
384 | struct listnode *node; | |
385 | u_short *id; | |
386 | ||
387 | for (ALL_LIST_ELEMENTS_RO( | |
388 | zclient->mi_redist[afi][i] | |
389 | .instances, | |
390 | node, id)) | |
391 | if (!(i == zclient->redist_default | |
392 | && *id == zclient->instance)) | |
393 | zebra_redistribute_send( | |
394 | ZEBRA_REDISTRIBUTE_ADD, | |
395 | zclient, afi, i, | |
396 | *id, | |
397 | VRF_DEFAULT); | |
398 | } | |
399 | ||
400 | /* Flush all redistribute request. */ | |
401 | for (afi = AFI_IP; afi < AFI_MAX; afi++) | |
402 | for (i = 0; i < ZEBRA_ROUTE_MAX; i++) | |
403 | if (i != zclient->redist_default | |
404 | && vrf_bitmap_check(zclient->redist[afi][i], | |
405 | vrf_id)) | |
406 | zebra_redistribute_send(ZEBRA_REDISTRIBUTE_ADD, | |
407 | zclient, afi, i, 0, | |
408 | vrf_id); | |
409 | ||
410 | /* If default information is needed. */ | |
411 | if (vrf_bitmap_check(zclient->default_information, VRF_DEFAULT)) | |
412 | zebra_message_send(zclient, ZEBRA_REDISTRIBUTE_DEFAULT_ADD, | |
413 | vrf_id); | |
7076bb2f FL |
414 | } |
415 | ||
0e5223e7 | 416 | /* Send unregister requests to zebra daemon for the information in a VRF. */ |
d62a17ae | 417 | void zclient_send_dereg_requests(struct zclient *zclient, vrf_id_t vrf_id) |
0e5223e7 | 418 | { |
d62a17ae | 419 | int i; |
420 | afi_t afi; | |
421 | ||
d62a17ae | 422 | /* If not connected to the zebra yet. */ |
423 | if (zclient->sock < 0) | |
424 | return; | |
425 | ||
426 | if (zclient_debug) | |
427 | zlog_debug("%s: send deregister messages for VRF %u", __func__, | |
428 | vrf_id); | |
429 | ||
430 | /* We need router-id information. */ | |
431 | zebra_message_send(zclient, ZEBRA_ROUTER_ID_DELETE, vrf_id); | |
432 | ||
433 | /* We need interface information. */ | |
434 | zebra_message_send(zclient, ZEBRA_INTERFACE_DELETE, vrf_id); | |
435 | ||
436 | /* Set unwanted redistribute route. */ | |
437 | for (afi = AFI_IP; afi < AFI_MAX; afi++) | |
438 | vrf_bitmap_set(zclient->redist[afi][zclient->redist_default], | |
439 | vrf_id); | |
440 | ||
441 | /* Flush all redistribute request. */ | |
442 | if (vrf_id == VRF_DEFAULT) | |
443 | for (afi = AFI_IP; afi < AFI_MAX; afi++) | |
444 | for (i = 0; i < ZEBRA_ROUTE_MAX; i++) | |
445 | if (zclient->mi_redist[afi][i].enabled) { | |
446 | struct listnode *node; | |
447 | u_short *id; | |
448 | ||
449 | for (ALL_LIST_ELEMENTS_RO( | |
450 | zclient->mi_redist[afi][i] | |
451 | .instances, | |
452 | node, id)) | |
453 | if (!(i == zclient->redist_default | |
454 | && *id == zclient->instance)) | |
455 | zebra_redistribute_send( | |
456 | ZEBRA_REDISTRIBUTE_DELETE, | |
457 | zclient, afi, i, | |
458 | *id, | |
459 | VRF_DEFAULT); | |
460 | } | |
461 | ||
462 | /* Flush all redistribute request. */ | |
463 | for (afi = AFI_IP; afi < AFI_MAX; afi++) | |
464 | for (i = 0; i < ZEBRA_ROUTE_MAX; i++) | |
465 | if (i != zclient->redist_default | |
466 | && vrf_bitmap_check(zclient->redist[afi][i], | |
467 | vrf_id)) | |
468 | zebra_redistribute_send( | |
469 | ZEBRA_REDISTRIBUTE_DELETE, zclient, afi, | |
470 | i, 0, vrf_id); | |
471 | ||
472 | /* If default information is needed. */ | |
473 | if (vrf_bitmap_check(zclient->default_information, VRF_DEFAULT)) | |
474 | zebra_message_send(zclient, ZEBRA_REDISTRIBUTE_DEFAULT_DELETE, | |
475 | vrf_id); | |
0e5223e7 | 476 | } |
477 | ||
4a04e5f7 | 478 | /* Send request to zebra daemon to start or stop RA. */ |
d62a17ae | 479 | void zclient_send_interface_radv_req(struct zclient *zclient, vrf_id_t vrf_id, |
480 | struct interface *ifp, int enable, | |
481 | int ra_interval) | |
4a04e5f7 | 482 | { |
d62a17ae | 483 | struct stream *s; |
4a04e5f7 | 484 | |
d62a17ae | 485 | /* If not connected to the zebra yet. */ |
486 | if (zclient->sock < 0) | |
487 | return; | |
4a04e5f7 | 488 | |
d62a17ae | 489 | /* Form and send message. */ |
490 | s = zclient->obuf; | |
491 | stream_reset(s); | |
4a04e5f7 | 492 | |
d62a17ae | 493 | if (enable) |
494 | zclient_create_header(s, ZEBRA_INTERFACE_ENABLE_RADV, vrf_id); | |
495 | else | |
496 | zclient_create_header(s, ZEBRA_INTERFACE_DISABLE_RADV, vrf_id); | |
4a04e5f7 | 497 | |
d62a17ae | 498 | stream_putl(s, ifp->ifindex); |
499 | stream_putl(s, ra_interval); | |
4a04e5f7 | 500 | |
d62a17ae | 501 | stream_putw_at(s, 0, stream_get_endp(s)); |
4a04e5f7 | 502 | |
d62a17ae | 503 | zclient_send_message(zclient); |
4a04e5f7 | 504 | } |
505 | ||
718e3744 | 506 | /* Make connection to zebra daemon. */ |
d62a17ae | 507 | int zclient_start(struct zclient *zclient) |
718e3744 | 508 | { |
d62a17ae | 509 | if (zclient_debug) |
510 | zlog_info("zclient_start is called"); | |
511 | ||
d62a17ae | 512 | /* If already connected to the zebra. */ |
513 | if (zclient->sock >= 0) | |
514 | return 0; | |
515 | ||
516 | /* Check connect thread. */ | |
517 | if (zclient->t_connect) | |
518 | return 0; | |
519 | ||
520 | if (zclient_socket_connect(zclient) < 0) { | |
521 | if (zclient_debug) | |
522 | zlog_debug("zclient connection fail"); | |
523 | zclient->fail++; | |
524 | zclient_event(ZCLIENT_CONNECT, zclient); | |
525 | return -1; | |
526 | } | |
718e3744 | 527 | |
d62a17ae | 528 | if (set_nonblocking(zclient->sock) < 0) |
529 | zlog_warn("%s: set_nonblocking(%d) failed", __func__, | |
530 | zclient->sock); | |
718e3744 | 531 | |
d62a17ae | 532 | /* Clear fail count. */ |
533 | zclient->fail = 0; | |
534 | if (zclient_debug) | |
535 | zlog_debug("zclient connect success with socket [%d]", | |
536 | zclient->sock); | |
718e3744 | 537 | |
d62a17ae | 538 | /* Create read thread. */ |
539 | zclient_event(ZCLIENT_READ, zclient); | |
718e3744 | 540 | |
d62a17ae | 541 | zebra_hello_send(zclient); |
718e3744 | 542 | |
d62a17ae | 543 | /* Inform the successful connection. */ |
544 | if (zclient->zebra_connected) | |
545 | (*zclient->zebra_connected)(zclient); | |
718e3744 | 546 | |
d62a17ae | 547 | return 0; |
718e3744 | 548 | } |
6b0655a2 | 549 | |
078430f6 DS |
550 | /* Initialize zebra client. Argument redist_default is unwanted |
551 | redistribute route type. */ | |
342213ea DS |
552 | void zclient_init(struct zclient *zclient, int redist_default, |
553 | u_short instance, struct zebra_privs_t *privs) | |
078430f6 | 554 | { |
d62a17ae | 555 | int afi, i; |
556 | ||
d62a17ae | 557 | /* Set -1 to the default socket value. */ |
558 | zclient->sock = -1; | |
342213ea | 559 | zclient->privs = privs; |
d62a17ae | 560 | |
561 | /* Clear redistribution flags. */ | |
562 | for (afi = AFI_IP; afi < AFI_MAX; afi++) | |
563 | for (i = 0; i < ZEBRA_ROUTE_MAX; i++) | |
564 | zclient->redist[afi][i] = vrf_bitmap_init(); | |
565 | ||
566 | /* Set unwanted redistribute route. bgpd does not need BGP route | |
567 | redistribution. */ | |
568 | zclient->redist_default = redist_default; | |
569 | zclient->instance = instance; | |
570 | /* Pending: make afi(s) an arg. */ | |
571 | for (afi = AFI_IP; afi < AFI_MAX; afi++) | |
572 | redist_add_instance(&zclient->mi_redist[afi][redist_default], | |
573 | instance); | |
574 | ||
575 | /* Set default-information redistribute to zero. */ | |
576 | zclient->default_information = vrf_bitmap_init(); | |
d62a17ae | 577 | |
578 | if (zclient_debug) | |
579 | zlog_debug("zclient_start is called"); | |
580 | ||
581 | zclient_event(ZCLIENT_SCHEDULE, zclient); | |
7076bb2f | 582 | } |
078430f6 | 583 | |
7076bb2f FL |
584 | /* This function is a wrapper function for calling zclient_start from |
585 | timer or event thread. */ | |
d62a17ae | 586 | static int zclient_connect(struct thread *t) |
7076bb2f | 587 | { |
d62a17ae | 588 | struct zclient *zclient; |
078430f6 | 589 | |
d62a17ae | 590 | zclient = THREAD_ARG(t); |
591 | zclient->t_connect = NULL; | |
078430f6 | 592 | |
d62a17ae | 593 | if (zclient_debug) |
594 | zlog_debug("zclient_connect is called"); | |
078430f6 | 595 | |
d62a17ae | 596 | return zclient_start(zclient); |
078430f6 DS |
597 | } |
598 | ||
d62a17ae | 599 | /* |
600 | * "xdr_encode"-like interface that allows daemon (client) to send | |
601 | * a message to zebra server for a route that needs to be | |
602 | * added/deleted to the kernel. Info about the route is specified | |
603 | * by the caller in a struct zapi_ipv4. zapi_ipv4_read() then writes | |
604 | * the info down the zclient socket using the stream_* functions. | |
605 | * | |
606 | * The corresponding read ("xdr_decode") function on the server | |
607 | * side is zread_ipv4_add()/zread_ipv4_delete(). | |
608 | * | |
609 | * 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 | |
610 | * +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+ | |
611 | * | Length (2) | Command | Route Type | | |
612 | * +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+ | |
613 | * | ZEBRA Flags | Message Flags | Prefix length | | |
614 | * +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+ | |
615 | * | Destination IPv4 Prefix for route | | |
616 | * +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+ | |
617 | * | Nexthop count | | |
618 | * +-+-+-+-+-+-+-+-+ | |
619 | * | |
620 | * | |
621 | * A number of IPv4 nexthop(s) or nexthop interface index(es) are then | |
622 | * described, as per the Nexthop count. Each nexthop described as: | |
623 | * | |
624 | * +-+-+-+-+-+-+-+-+ | |
625 | * | Nexthop Type | Set to one of ZEBRA_NEXTHOP_* | |
626 | * +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+ | |
627 | * | IPv4 Nexthop address or Interface Index number | | |
628 | * +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+ | |
629 | * | |
09a484dd DL |
630 | * Alternatively, if the route is a blackhole route, then Nexthop count |
631 | * is set to 1 and a nexthop of type NEXTHOP_TYPE_BLACKHOLE is the sole | |
632 | * nexthop. | |
d62a17ae | 633 | * |
634 | * The original struct zapi_ipv4, zapi_ipv4_route() and zread_ipv4_*() | |
635 | * infrastructure was built around the traditional (32-bit "gate OR | |
636 | * ifindex") nexthop data unit. A special encoding can be used to feed | |
637 | * onlink (64-bit "gate AND ifindex") nexthops into zapi_ipv4_route() | |
638 | * using the same zapi_ipv4 structure. This is done by setting zapi_ipv4 | |
639 | * fields as follows: | |
640 | * - .message |= ZAPI_MESSAGE_NEXTHOP | ZAPI_MESSAGE_ONLINK | |
641 | * - .nexthop_num == .ifindex_num | |
642 | * - .nexthop and .ifindex are filled with gate and ifindex parts of | |
643 | * each compound nexthop, both in the same order | |
644 | * | |
645 | * zapi_ipv4_route() will produce two nexthop data units for each such | |
646 | * interleaved 64-bit nexthop. On the zserv side of the socket it will be | |
647 | * mapped to a singlle NEXTHOP_TYPE_IPV4_IFINDEX_OL RIB nexthop structure. | |
648 | * | |
649 | * If ZAPI_MESSAGE_DISTANCE is set, the distance value is written as a 1 | |
650 | * byte value. | |
651 | * | |
652 | * If ZAPI_MESSAGE_METRIC is set, the metric value is written as an 8 | |
653 | * byte value. | |
654 | * | |
655 | * If ZAPI_MESSAGE_TAG is set, the tag value is written as a 4 byte value | |
656 | * | |
657 | * If ZAPI_MESSAGE_MTU is set, the mtu value is written as a 4 byte value | |
658 | * | |
659 | * XXX: No attention paid to alignment. | |
660 | */ | |
661 | int zapi_ipv4_route(u_char cmd, struct zclient *zclient, struct prefix_ipv4 *p, | |
662 | struct zapi_ipv4 *api) | |
718e3744 | 663 | { |
d62a17ae | 664 | int i; |
665 | int psize; | |
666 | struct stream *s; | |
667 | ||
668 | /* Reset stream. */ | |
669 | s = zclient->obuf; | |
670 | stream_reset(s); | |
671 | ||
672 | /* Some checks for labeled-unicast. The current expectation is that each | |
673 | * nexthop is accompanied by a label in the case of labeled-unicast. | |
674 | */ | |
675 | if (CHECK_FLAG(api->message, ZAPI_MESSAGE_LABEL) | |
676 | && CHECK_FLAG(api->message, ZAPI_MESSAGE_NEXTHOP)) { | |
677 | /* We expect prefixes installed with labels and the number to | |
678 | * match | |
679 | * the number of nexthops. | |
680 | */ | |
681 | assert(api->label_num == api->nexthop_num); | |
682 | } | |
683 | ||
684 | zclient_create_header(s, cmd, api->vrf_id); | |
685 | ||
686 | /* Put type and nexthop. */ | |
687 | stream_putc(s, api->type); | |
688 | stream_putw(s, api->instance); | |
689 | stream_putl(s, api->flags); | |
690 | stream_putc(s, api->message); | |
691 | stream_putw(s, api->safi); | |
692 | ||
693 | /* Put prefix information. */ | |
694 | psize = PSIZE(p->prefixlen); | |
695 | stream_putc(s, p->prefixlen); | |
696 | stream_write(s, (u_char *)&p->prefix, psize); | |
697 | ||
698 | /* Nexthop, ifindex, distance and metric information. */ | |
699 | if (CHECK_FLAG(api->message, ZAPI_MESSAGE_NEXTHOP)) { | |
09a484dd | 700 | stream_putc(s, api->nexthop_num + api->ifindex_num); |
d62a17ae | 701 | |
702 | for (i = 0; i < api->nexthop_num; i++) { | |
703 | stream_putc(s, NEXTHOP_TYPE_IPV4); | |
704 | stream_put_in_addr(s, api->nexthop[i]); | |
705 | /* For labeled-unicast, each nexthop is followed by | |
706 | * label. */ | |
707 | if (CHECK_FLAG(api->message, ZAPI_MESSAGE_LABEL)) | |
708 | stream_putl(s, api->label[i]); | |
709 | } | |
710 | for (i = 0; i < api->ifindex_num; i++) { | |
711 | stream_putc(s, NEXTHOP_TYPE_IFINDEX); | |
712 | stream_putl(s, api->ifindex[i]); | |
713 | } | |
714 | } | |
715 | ||
716 | if (CHECK_FLAG(api->message, ZAPI_MESSAGE_DISTANCE)) | |
717 | stream_putc(s, api->distance); | |
718 | if (CHECK_FLAG(api->message, ZAPI_MESSAGE_METRIC)) | |
719 | stream_putl(s, api->metric); | |
720 | if (CHECK_FLAG(api->message, ZAPI_MESSAGE_TAG)) | |
721 | stream_putl(s, api->tag); | |
722 | if (CHECK_FLAG(api->message, ZAPI_MESSAGE_MTU)) | |
723 | stream_putl(s, api->mtu); | |
724 | ||
725 | /* Put length at the first point of the stream. */ | |
726 | stream_putw_at(s, 0, stream_get_endp(s)); | |
727 | ||
728 | return zclient_send_message(zclient); | |
718e3744 | 729 | } |
730 | ||
d62a17ae | 731 | int zapi_ipv4_route_ipv6_nexthop(u_char cmd, struct zclient *zclient, |
732 | struct prefix_ipv4 *p, struct zapi_ipv6 *api) | |
8a92a8a0 | 733 | { |
d62a17ae | 734 | int i; |
735 | int psize; | |
736 | struct stream *s; | |
737 | ||
738 | /* Reset stream. */ | |
739 | s = zclient->obuf; | |
740 | stream_reset(s); | |
741 | ||
742 | /* Some checks for labeled-unicast. The current expectation is that each | |
743 | * nexthop is accompanied by a label in the case of labeled-unicast. | |
744 | */ | |
745 | if (CHECK_FLAG(api->message, ZAPI_MESSAGE_LABEL) | |
746 | && CHECK_FLAG(api->message, ZAPI_MESSAGE_NEXTHOP)) { | |
747 | /* We expect prefixes installed with labels and the number to | |
748 | * match | |
749 | * the number of nexthops. | |
750 | */ | |
751 | assert(api->label_num == api->nexthop_num); | |
8a92a8a0 | 752 | } |
d62a17ae | 753 | |
754 | zclient_create_header(s, cmd, api->vrf_id); | |
755 | ||
756 | /* Put type and nexthop. */ | |
757 | stream_putc(s, api->type); | |
758 | stream_putw(s, api->instance); | |
759 | stream_putl(s, api->flags); | |
760 | stream_putc(s, api->message); | |
761 | stream_putw(s, api->safi); | |
762 | ||
763 | /* Put prefix information. */ | |
764 | psize = PSIZE(p->prefixlen); | |
765 | stream_putc(s, p->prefixlen); | |
766 | stream_write(s, (u_char *)&p->prefix, psize); | |
767 | ||
768 | /* Nexthop, ifindex, distance and metric information. */ | |
769 | if (CHECK_FLAG(api->message, ZAPI_MESSAGE_NEXTHOP)) { | |
09a484dd | 770 | stream_putc(s, api->nexthop_num + api->ifindex_num); |
d62a17ae | 771 | |
772 | for (i = 0; i < api->nexthop_num; i++) { | |
773 | stream_putc(s, NEXTHOP_TYPE_IPV6); | |
774 | stream_write(s, (u_char *)api->nexthop[i], 16); | |
775 | /* For labeled-unicast, each nexthop is followed by | |
776 | * label. */ | |
777 | if (CHECK_FLAG(api->message, ZAPI_MESSAGE_LABEL)) | |
778 | stream_putl(s, api->label[i]); | |
779 | } | |
780 | for (i = 0; i < api->ifindex_num; i++) { | |
781 | stream_putc(s, NEXTHOP_TYPE_IFINDEX); | |
782 | stream_putl(s, api->ifindex[i]); | |
783 | } | |
8a92a8a0 | 784 | } |
8a92a8a0 | 785 | |
d62a17ae | 786 | if (CHECK_FLAG(api->message, ZAPI_MESSAGE_DISTANCE)) |
787 | stream_putc(s, api->distance); | |
788 | if (CHECK_FLAG(api->message, ZAPI_MESSAGE_METRIC)) | |
789 | stream_putl(s, api->metric); | |
790 | if (CHECK_FLAG(api->message, ZAPI_MESSAGE_TAG)) | |
791 | stream_putl(s, api->tag); | |
792 | if (CHECK_FLAG(api->message, ZAPI_MESSAGE_MTU)) | |
793 | stream_putl(s, api->mtu); | |
8a92a8a0 | 794 | |
d62a17ae | 795 | /* Put length at the first point of the stream. */ |
796 | stream_putw_at(s, 0, stream_get_endp(s)); | |
8a92a8a0 | 797 | |
d62a17ae | 798 | return zclient_send_message(zclient); |
8a92a8a0 DS |
799 | } |
800 | ||
d62a17ae | 801 | int zapi_ipv6_route(u_char cmd, struct zclient *zclient, struct prefix_ipv6 *p, |
802 | struct prefix_ipv6 *src_p, struct zapi_ipv6 *api) | |
718e3744 | 803 | { |
d62a17ae | 804 | int i; |
805 | int psize; | |
806 | struct stream *s; | |
807 | ||
808 | /* either we have !SRCPFX && src_p == NULL, or SRCPFX && src_p != NULL | |
809 | */ | |
810 | assert(!(api->message & ZAPI_MESSAGE_SRCPFX) == !src_p); | |
811 | ||
812 | /* Reset stream. */ | |
813 | s = zclient->obuf; | |
814 | stream_reset(s); | |
815 | ||
816 | /* Some checks for labeled-unicast. The current expectation is that each | |
817 | * nexthop is accompanied by a label in the case of labeled-unicast. | |
818 | */ | |
819 | if (CHECK_FLAG(api->message, ZAPI_MESSAGE_LABEL) | |
820 | && CHECK_FLAG(api->message, ZAPI_MESSAGE_NEXTHOP)) { | |
821 | /* We expect prefixes installed with labels and the number to | |
822 | * match | |
823 | * the number of nexthops. | |
824 | */ | |
825 | assert(api->label_num == api->nexthop_num); | |
718e3744 | 826 | } |
d62a17ae | 827 | |
828 | zclient_create_header(s, cmd, api->vrf_id); | |
829 | ||
830 | /* Put type and nexthop. */ | |
831 | stream_putc(s, api->type); | |
832 | stream_putw(s, api->instance); | |
833 | stream_putl(s, api->flags); | |
834 | stream_putc(s, api->message); | |
835 | stream_putw(s, api->safi); | |
836 | ||
837 | /* Put prefix information. */ | |
838 | psize = PSIZE(p->prefixlen); | |
839 | stream_putc(s, p->prefixlen); | |
840 | stream_write(s, (u_char *)&p->prefix, psize); | |
841 | ||
842 | if (CHECK_FLAG(api->message, ZAPI_MESSAGE_SRCPFX)) { | |
843 | psize = PSIZE(src_p->prefixlen); | |
844 | stream_putc(s, src_p->prefixlen); | |
845 | stream_write(s, (u_char *)&src_p->prefix, psize); | |
718e3744 | 846 | } |
718e3744 | 847 | |
d62a17ae | 848 | /* Nexthop, ifindex, distance and metric information. */ |
849 | if (CHECK_FLAG(api->message, ZAPI_MESSAGE_NEXTHOP)) { | |
09a484dd | 850 | stream_putc(s, api->nexthop_num + api->ifindex_num); |
d62a17ae | 851 | |
852 | for (i = 0; i < api->nexthop_num; i++) { | |
853 | stream_putc(s, NEXTHOP_TYPE_IPV6); | |
854 | stream_write(s, (u_char *)api->nexthop[i], 16); | |
855 | /* For labeled-unicast, each nexthop is followed by | |
856 | * label. */ | |
857 | if (CHECK_FLAG(api->message, ZAPI_MESSAGE_LABEL)) | |
858 | stream_putl(s, api->label[i]); | |
859 | } | |
860 | for (i = 0; i < api->ifindex_num; i++) { | |
861 | stream_putc(s, NEXTHOP_TYPE_IFINDEX); | |
862 | stream_putl(s, api->ifindex[i]); | |
863 | } | |
864 | } | |
718e3744 | 865 | |
d62a17ae | 866 | if (CHECK_FLAG(api->message, ZAPI_MESSAGE_DISTANCE)) |
867 | stream_putc(s, api->distance); | |
868 | if (CHECK_FLAG(api->message, ZAPI_MESSAGE_METRIC)) | |
869 | stream_putl(s, api->metric); | |
870 | if (CHECK_FLAG(api->message, ZAPI_MESSAGE_TAG)) | |
871 | stream_putl(s, api->tag); | |
872 | if (CHECK_FLAG(api->message, ZAPI_MESSAGE_MTU)) | |
873 | stream_putl(s, api->mtu); | |
718e3744 | 874 | |
d62a17ae | 875 | /* Put length at the first point of the stream. */ |
876 | stream_putw_at(s, 0, stream_get_endp(s)); | |
877 | ||
878 | return zclient_send_message(zclient); | |
718e3744 | 879 | } |
718e3744 | 880 | |
0e51b4a3 RW |
881 | int zclient_route_send(u_char cmd, struct zclient *zclient, |
882 | struct zapi_route *api) | |
657cde12 | 883 | { |
0e51b4a3 RW |
884 | if (zapi_route_encode(cmd, zclient->obuf, api) < 0) |
885 | return -1; | |
886 | return zclient_send_message(zclient); | |
887 | } | |
888 | ||
889 | int zapi_route_encode(u_char cmd, struct stream *s, struct zapi_route *api) | |
890 | { | |
891 | struct zapi_nexthop *api_nh; | |
d62a17ae | 892 | int i; |
893 | int psize; | |
d62a17ae | 894 | |
d62a17ae | 895 | stream_reset(s); |
d62a17ae | 896 | zclient_create_header(s, cmd, api->vrf_id); |
897 | ||
d62a17ae | 898 | stream_putc(s, api->type); |
899 | stream_putw(s, api->instance); | |
900 | stream_putl(s, api->flags); | |
901 | stream_putc(s, api->message); | |
902 | stream_putw(s, api->safi); | |
903 | ||
904 | /* Put prefix information. */ | |
0e51b4a3 | 905 | stream_putc(s, api->prefix.family); |
bb1b9c47 RW |
906 | psize = PSIZE(api->prefix.prefixlen); |
907 | stream_putc(s, api->prefix.prefixlen); | |
908 | stream_write(s, (u_char *)&api->prefix.u.prefix, psize); | |
d62a17ae | 909 | |
910 | if (CHECK_FLAG(api->message, ZAPI_MESSAGE_SRCPFX)) { | |
bb1b9c47 RW |
911 | psize = PSIZE(api->src_prefix.prefixlen); |
912 | stream_putc(s, api->src_prefix.prefixlen); | |
913 | stream_write(s, (u_char *)&api->src_prefix.prefix, psize); | |
d62a17ae | 914 | } |
915 | ||
0e51b4a3 | 916 | /* Nexthops. */ |
d62a17ae | 917 | if (CHECK_FLAG(api->message, ZAPI_MESSAGE_NEXTHOP)) { |
bb1b9c47 RW |
918 | /* limit the number of nexthops if necessary */ |
919 | if (api->nexthop_num > MULTIPATH_NUM) { | |
920 | char buf[PREFIX2STR_BUFFER]; | |
921 | ||
922 | prefix2str(&api->prefix, buf, sizeof(buf)); | |
923 | zlog_warn( | |
a74e593b RW |
924 | "%s: prefix %s: can't encode %u nexthops " |
925 | "(maximum is %u)", | |
926 | __func__, buf, api->nexthop_num, MULTIPATH_NUM); | |
927 | return -1; | |
bb1b9c47 RW |
928 | } |
929 | ||
b5f79651 | 930 | stream_putw(s, api->nexthop_num); |
d62a17ae | 931 | |
932 | for (i = 0; i < api->nexthop_num; i++) { | |
bb1b9c47 RW |
933 | api_nh = &api->nexthops[i]; |
934 | ||
935 | stream_putc(s, api_nh->type); | |
936 | switch (api_nh->type) { | |
d62a17ae | 937 | case NEXTHOP_TYPE_BLACKHOLE: |
94758e66 | 938 | stream_putc(s, api_nh->bh_type); |
d62a17ae | 939 | break; |
940 | case NEXTHOP_TYPE_IPV4: | |
bb1b9c47 | 941 | stream_put_in_addr(s, &api_nh->gate.ipv4); |
d62a17ae | 942 | break; |
943 | case NEXTHOP_TYPE_IPV4_IFINDEX: | |
bb1b9c47 RW |
944 | stream_put_in_addr(s, &api_nh->gate.ipv4); |
945 | stream_putl(s, api_nh->ifindex); | |
d62a17ae | 946 | break; |
947 | case NEXTHOP_TYPE_IFINDEX: | |
bb1b9c47 | 948 | stream_putl(s, api_nh->ifindex); |
d62a17ae | 949 | break; |
950 | case NEXTHOP_TYPE_IPV6: | |
bb1b9c47 RW |
951 | stream_write(s, (u_char *)&api_nh->gate.ipv6, |
952 | 16); | |
d62a17ae | 953 | break; |
954 | case NEXTHOP_TYPE_IPV6_IFINDEX: | |
bb1b9c47 RW |
955 | stream_write(s, (u_char *)&api_nh->gate.ipv6, |
956 | 16); | |
957 | stream_putl(s, api_nh->ifindex); | |
d62a17ae | 958 | break; |
959 | } | |
bb1b9c47 | 960 | |
52dd3aa4 RW |
961 | /* MPLS labels for BGP-LU or Segment Routing */ |
962 | if (CHECK_FLAG(api->message, ZAPI_MESSAGE_LABEL)) { | |
963 | if (api_nh->label_num > MPLS_MAX_LABELS) { | |
964 | char buf[PREFIX2STR_BUFFER]; | |
965 | prefix2str(&api->prefix, buf, | |
966 | sizeof(buf)); | |
967 | zlog_err( | |
968 | "%s: prefix %s: can't encode " | |
969 | "%u labels (maximum is %u)", | |
970 | __func__, buf, | |
971 | api_nh->label_num, | |
972 | MPLS_MAX_LABELS); | |
973 | return -1; | |
974 | } | |
975 | ||
976 | stream_putc(s, api_nh->label_num); | |
977 | stream_put(s, &api_nh->labels[0], | |
978 | api_nh->label_num | |
979 | * sizeof(mpls_label_t)); | |
980 | } | |
d62a17ae | 981 | } |
982 | } | |
983 | ||
0e51b4a3 | 984 | /* Attributes. */ |
d62a17ae | 985 | if (CHECK_FLAG(api->message, ZAPI_MESSAGE_DISTANCE)) |
986 | stream_putc(s, api->distance); | |
987 | if (CHECK_FLAG(api->message, ZAPI_MESSAGE_METRIC)) | |
988 | stream_putl(s, api->metric); | |
989 | if (CHECK_FLAG(api->message, ZAPI_MESSAGE_TAG)) | |
990 | stream_putl(s, api->tag); | |
991 | if (CHECK_FLAG(api->message, ZAPI_MESSAGE_MTU)) | |
992 | stream_putl(s, api->mtu); | |
993 | ||
994 | /* Put length at the first point of the stream. */ | |
995 | stream_putw_at(s, 0, stream_get_endp(s)); | |
996 | ||
0e51b4a3 RW |
997 | return 0; |
998 | } | |
999 | ||
1000 | int zapi_route_decode(struct stream *s, struct zapi_route *api) | |
1001 | { | |
1002 | struct zapi_nexthop *api_nh; | |
1003 | int i; | |
1004 | ||
1005 | memset(api, 0, sizeof(*api)); | |
1006 | ||
1007 | /* Type, flags, message. */ | |
1008 | api->type = stream_getc(s); | |
1009 | api->instance = stream_getw(s); | |
1010 | api->flags = stream_getl(s); | |
1011 | api->message = stream_getc(s); | |
1012 | api->safi = stream_getw(s); | |
1013 | ||
1014 | /* Prefix. */ | |
1015 | api->prefix.family = stream_getc(s); | |
1016 | switch (api->prefix.family) { | |
1017 | case AF_INET: | |
1018 | api->prefix.prefixlen = MIN(IPV4_MAX_PREFIXLEN, stream_getc(s)); | |
1019 | break; | |
1020 | case AF_INET6: | |
1021 | api->prefix.prefixlen = MIN(IPV6_MAX_PREFIXLEN, stream_getc(s)); | |
1022 | break; | |
1023 | } | |
1024 | stream_get(&api->prefix.u.prefix, s, PSIZE(api->prefix.prefixlen)); | |
1025 | if (CHECK_FLAG(api->message, ZAPI_MESSAGE_SRCPFX)) { | |
1026 | api->src_prefix.family = AF_INET6; | |
1027 | api->src_prefix.prefixlen = stream_getc(s); | |
1028 | stream_get(&api->src_prefix.prefix, s, | |
1029 | PSIZE(api->src_prefix.prefixlen)); | |
1030 | ||
1031 | if (api->prefix.family != AF_INET6 | |
1032 | || api->src_prefix.prefixlen == 0) | |
1033 | UNSET_FLAG(api->message, ZAPI_MESSAGE_SRCPFX); | |
1034 | } | |
1035 | ||
1036 | /* Nexthops. */ | |
1037 | if (CHECK_FLAG(api->message, ZAPI_MESSAGE_NEXTHOP)) { | |
b5f79651 | 1038 | api->nexthop_num = stream_getw(s); |
0e51b4a3 RW |
1039 | if (api->nexthop_num > MULTIPATH_NUM) { |
1040 | zlog_warn("%s: invalid number of nexthops (%u)", | |
1041 | __func__, api->nexthop_num); | |
1042 | return -1; | |
1043 | } | |
1044 | ||
1045 | for (i = 0; i < api->nexthop_num; i++) { | |
1046 | api_nh = &api->nexthops[i]; | |
1047 | ||
1048 | api_nh->type = stream_getc(s); | |
1049 | switch (api_nh->type) { | |
1050 | case NEXTHOP_TYPE_BLACKHOLE: | |
94758e66 | 1051 | api_nh->bh_type = stream_getc(s); |
0e51b4a3 RW |
1052 | break; |
1053 | case NEXTHOP_TYPE_IPV4: | |
1054 | api_nh->gate.ipv4.s_addr = stream_get_ipv4(s); | |
1055 | break; | |
1056 | case NEXTHOP_TYPE_IPV4_IFINDEX: | |
1057 | api_nh->gate.ipv4.s_addr = stream_get_ipv4(s); | |
1058 | api_nh->ifindex = stream_getl(s); | |
1059 | break; | |
1060 | case NEXTHOP_TYPE_IFINDEX: | |
1061 | api_nh->ifindex = stream_getl(s); | |
1062 | break; | |
1063 | case NEXTHOP_TYPE_IPV6: | |
1064 | stream_get(&api_nh->gate.ipv6, s, 16); | |
1065 | break; | |
1066 | case NEXTHOP_TYPE_IPV6_IFINDEX: | |
1067 | stream_get(&api_nh->gate.ipv6, s, 16); | |
1068 | api_nh->ifindex = stream_getl(s); | |
1069 | break; | |
1070 | } | |
1071 | ||
52dd3aa4 | 1072 | /* MPLS labels for BGP-LU or Segment Routing */ |
0e51b4a3 | 1073 | if (CHECK_FLAG(api->message, ZAPI_MESSAGE_LABEL)) { |
52dd3aa4 RW |
1074 | api_nh->label_num = stream_getc(s); |
1075 | ||
1076 | if (api_nh->label_num > MPLS_MAX_LABELS) { | |
1077 | zlog_warn( | |
1078 | "%s: invalid number of MPLS " | |
1079 | "labels (%u)", | |
1080 | __func__, api_nh->label_num); | |
1081 | return -1; | |
1082 | } | |
1083 | ||
1084 | stream_get(&api_nh->labels[0], s, | |
1085 | api_nh->label_num | |
1086 | * sizeof(mpls_label_t)); | |
0e51b4a3 RW |
1087 | } |
1088 | } | |
1089 | } | |
1090 | ||
1091 | /* Attributes. */ | |
1092 | if (CHECK_FLAG(api->message, ZAPI_MESSAGE_DISTANCE)) | |
1093 | api->distance = stream_getc(s); | |
1094 | if (CHECK_FLAG(api->message, ZAPI_MESSAGE_METRIC)) | |
1095 | api->metric = stream_getl(s); | |
1096 | if (CHECK_FLAG(api->message, ZAPI_MESSAGE_TAG)) | |
1097 | api->tag = stream_getl(s); | |
1098 | if (CHECK_FLAG(api->message, ZAPI_MESSAGE_MTU)) | |
1099 | api->mtu = stream_getl(s); | |
1100 | ||
1101 | return 0; | |
657cde12 DS |
1102 | } |
1103 | ||
d62a17ae | 1104 | /* |
0a589359 | 1105 | * send a ZEBRA_REDISTRIBUTE_ADD or ZEBRA_REDISTRIBUTE_DELETE |
1106 | * for the route type (ZEBRA_ROUTE_KERNEL etc.). The zebra server will | |
d62a17ae | 1107 | * then set/unset redist[type] in the client handle (a struct zserv) for the |
0a589359 | 1108 | * sending client |
1109 | */ | |
d62a17ae | 1110 | int zebra_redistribute_send(int command, struct zclient *zclient, afi_t afi, |
1111 | int type, u_short instance, vrf_id_t vrf_id) | |
718e3744 | 1112 | { |
d62a17ae | 1113 | struct stream *s; |
1114 | ||
1115 | s = zclient->obuf; | |
1116 | stream_reset(s); | |
1117 | ||
1118 | zclient_create_header(s, command, vrf_id); | |
1119 | stream_putc(s, afi); | |
1120 | stream_putc(s, type); | |
1121 | stream_putw(s, instance); | |
1122 | ||
1123 | stream_putw_at(s, 0, stream_get_endp(s)); | |
1124 | ||
1125 | return zclient_send_message(zclient); | |
718e3744 | 1126 | } |
1127 | ||
d9178828 | 1128 | /* Get prefix in ZServ format; family should be filled in on prefix */ |
d62a17ae | 1129 | static void zclient_stream_get_prefix(struct stream *s, struct prefix *p) |
d9178828 | 1130 | { |
d62a17ae | 1131 | size_t plen = prefix_blen(p); |
1132 | u_char c; | |
1133 | p->prefixlen = 0; | |
1134 | ||
1135 | if (plen == 0) | |
1136 | return; | |
1137 | ||
1138 | stream_get(&p->u.prefix, s, plen); | |
1139 | c = stream_getc(s); | |
1140 | p->prefixlen = MIN(plen * 8, c); | |
d9178828 PJ |
1141 | } |
1142 | ||
18a6dce6 | 1143 | /* Router-id update from zebra daemon. */ |
d62a17ae | 1144 | void zebra_router_id_update_read(struct stream *s, struct prefix *rid) |
18a6dce6 | 1145 | { |
d62a17ae | 1146 | /* Fetch interface address. */ |
1147 | rid->family = stream_getc(s); | |
1148 | ||
1149 | zclient_stream_get_prefix(s, rid); | |
18a6dce6 | 1150 | } |
1151 | ||
718e3744 | 1152 | /* Interface addition from zebra daemon. */ |
d62a17ae | 1153 | /* |
0a589359 | 1154 | * The format of the message sent with type ZEBRA_INTERFACE_ADD or |
1155 | * ZEBRA_INTERFACE_DELETE from zebra to the client is: | |
1156 | * 0 1 2 3 | |
1157 | * 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 | 1158 | * +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+ |
1159 | * | ifname | | |
1160 | * | | | |
1161 | * | | | |
1162 | * | | | |
1163 | * | | | |
1164 | * +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+ | |
16f1b9ee OD |
1165 | * | ifindex | |
1166 | * +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+ | |
1167 | * | status | | |
0a589359 | 1168 | * +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+ |
16f1b9ee | 1169 | * | if_flags | |
c77d4546 | 1170 | * | | |
0a589359 | 1171 | * +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+ |
16f1b9ee OD |
1172 | * | metric | |
1173 | * +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+ | |
2d7f0d76 DS |
1174 | * | speed | |
1175 | * +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+ | |
16f1b9ee OD |
1176 | * | ifmtu | |
1177 | * +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+ | |
1178 | * | ifmtu6 | | |
1179 | * +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+ | |
1180 | * | bandwidth | | |
1181 | * +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+ | |
1182 | * | Link Layer Type | | |
0a589359 | 1183 | * +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+ |
16f1b9ee | 1184 | * | Harware Address Length | |
0a589359 | 1185 | * +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+ |
16f1b9ee OD |
1186 | * | Hardware Address if HW lenght different from 0 | |
1187 | * | ... max INTERFACE_HWADDR_MAX | | |
0a589359 | 1188 | * +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+ |
16f1b9ee | 1189 | * | Link_params? | Whether a link-params follows: 1 or 0. |
0a589359 | 1190 | * +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+ |
16f1b9ee OD |
1191 | * | Link_params 0 or 1 INTERFACE_LINK_PARAMS_SIZE sized | |
1192 | * | .... (struct if_link_params). | | |
0a589359 | 1193 | * +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+ |
1194 | */ | |
1195 | ||
d62a17ae | 1196 | static void zclient_vrf_add(struct zclient *zclient, vrf_id_t vrf_id) |
1892f15e | 1197 | { |
d62a17ae | 1198 | struct vrf *vrf; |
1199 | char vrfname_tmp[VRF_NAMSIZ]; | |
1200 | struct vrf_data data; | |
1892f15e | 1201 | |
d62a17ae | 1202 | stream_get(&data, zclient->ibuf, sizeof(struct vrf_data)); |
1203 | /* Read interface name. */ | |
1204 | stream_get(vrfname_tmp, zclient->ibuf, VRF_NAMSIZ); | |
1892f15e | 1205 | |
d62a17ae | 1206 | /* Lookup/create vrf by vrf_id. */ |
1207 | vrf = vrf_get(vrf_id, vrfname_tmp); | |
1208 | vrf->data = data; | |
1892f15e | 1209 | |
d62a17ae | 1210 | vrf_enable(vrf); |
1892f15e DS |
1211 | } |
1212 | ||
d62a17ae | 1213 | static void zclient_vrf_delete(struct zclient *zclient, vrf_id_t vrf_id) |
1892f15e | 1214 | { |
d62a17ae | 1215 | struct vrf *vrf; |
1892f15e | 1216 | |
d62a17ae | 1217 | /* Lookup vrf by vrf_id. */ |
1218 | vrf = vrf_lookup_by_id(vrf_id); | |
1892f15e | 1219 | |
d62a17ae | 1220 | /* |
1221 | * If a routing protocol doesn't know about a | |
1222 | * vrf that is about to be deleted. There is | |
1223 | * no point in attempting to delete it. | |
1224 | */ | |
1225 | if (!vrf) | |
1226 | return; | |
beef1990 | 1227 | |
d62a17ae | 1228 | vrf_delete(vrf); |
1892f15e DS |
1229 | } |
1230 | ||
d62a17ae | 1231 | struct interface *zebra_interface_add_read(struct stream *s, vrf_id_t vrf_id) |
718e3744 | 1232 | { |
d62a17ae | 1233 | struct interface *ifp; |
1234 | char ifname_tmp[INTERFACE_NAMSIZ]; | |
718e3744 | 1235 | |
d62a17ae | 1236 | /* Read interface name. */ |
1237 | stream_get(ifname_tmp, s, INTERFACE_NAMSIZ); | |
718e3744 | 1238 | |
d62a17ae | 1239 | /* Lookup/create interface by name. */ |
bcc24579 | 1240 | ifp = if_get_by_name(ifname_tmp, vrf_id, 0); |
718e3744 | 1241 | |
d62a17ae | 1242 | zebra_interface_if_set_value(s, ifp); |
718e3744 | 1243 | |
d62a17ae | 1244 | return ifp; |
718e3744 | 1245 | } |
1246 | ||
d62a17ae | 1247 | /* |
0a589359 | 1248 | * Read interface up/down msg (ZEBRA_INTERFACE_UP/ZEBRA_INTERFACE_DOWN) |
1249 | * from zebra server. The format of this message is the same as | |
1250 | * that sent for ZEBRA_INTERFACE_ADD/ZEBRA_INTERFACE_DELETE (see | |
1251 | * comments for zebra_interface_add_read), except that no sockaddr_dl | |
1252 | * is sent at the tail of the message. | |
1253 | */ | |
d62a17ae | 1254 | struct interface *zebra_interface_state_read(struct stream *s, vrf_id_t vrf_id) |
718e3744 | 1255 | { |
d62a17ae | 1256 | struct interface *ifp; |
1257 | char ifname_tmp[INTERFACE_NAMSIZ]; | |
1258 | ||
1259 | /* Read interface name. */ | |
1260 | stream_get(ifname_tmp, s, INTERFACE_NAMSIZ); | |
1261 | ||
1262 | /* Lookup this by interface index. */ | |
bcc24579 | 1263 | ifp = if_lookup_by_name(ifname_tmp, vrf_id); |
d62a17ae | 1264 | if (ifp == NULL) { |
1265 | zlog_warn("INTERFACE_STATE: Cannot find IF %s in VRF %d", | |
1266 | ifname_tmp, vrf_id); | |
1267 | return NULL; | |
1268 | } | |
1269 | ||
1270 | zebra_interface_if_set_value(s, ifp); | |
1271 | ||
1272 | return ifp; | |
718e3744 | 1273 | } |
1274 | ||
d62a17ae | 1275 | static void link_params_set_value(struct stream *s, struct if_link_params *iflp) |
16f1b9ee OD |
1276 | { |
1277 | ||
d62a17ae | 1278 | if (iflp == NULL) |
1279 | return; | |
1280 | ||
1281 | iflp->lp_status = stream_getl(s); | |
1282 | iflp->te_metric = stream_getl(s); | |
1283 | iflp->max_bw = stream_getf(s); | |
1284 | iflp->max_rsv_bw = stream_getf(s); | |
1285 | uint32_t bwclassnum = stream_getl(s); | |
1286 | { | |
1287 | unsigned int i; | |
1288 | for (i = 0; i < bwclassnum && i < MAX_CLASS_TYPE; i++) | |
1289 | iflp->unrsv_bw[i] = stream_getf(s); | |
1290 | if (i < bwclassnum) | |
1291 | zlog_err( | |
1292 | "%s: received %d > %d (MAX_CLASS_TYPE) bw entries" | |
1293 | " - outdated library?", | |
1294 | __func__, bwclassnum, MAX_CLASS_TYPE); | |
1295 | } | |
1296 | iflp->admin_grp = stream_getl(s); | |
1297 | iflp->rmt_as = stream_getl(s); | |
1298 | iflp->rmt_ip.s_addr = stream_get_ipv4(s); | |
1299 | ||
1300 | iflp->av_delay = stream_getl(s); | |
1301 | iflp->min_delay = stream_getl(s); | |
1302 | iflp->max_delay = stream_getl(s); | |
1303 | iflp->delay_var = stream_getl(s); | |
1304 | ||
1305 | iflp->pkt_loss = stream_getf(s); | |
1306 | iflp->res_bw = stream_getf(s); | |
1307 | iflp->ava_bw = stream_getf(s); | |
1308 | iflp->use_bw = stream_getf(s); | |
16f1b9ee OD |
1309 | } |
1310 | ||
d62a17ae | 1311 | struct interface *zebra_interface_link_params_read(struct stream *s) |
16f1b9ee | 1312 | { |
d62a17ae | 1313 | struct if_link_params *iflp; |
1314 | ifindex_t ifindex; | |
c28e5b2a | 1315 | |
d62a17ae | 1316 | assert(s); |
c28e5b2a | 1317 | |
d62a17ae | 1318 | ifindex = stream_getl(s); |
16f1b9ee | 1319 | |
d62a17ae | 1320 | struct interface *ifp = if_lookup_by_index(ifindex, VRF_DEFAULT); |
16f1b9ee | 1321 | |
d62a17ae | 1322 | if (ifp == NULL) { |
1323 | zlog_err("%s: unknown ifindex %u, shouldn't happen", __func__, | |
1324 | ifindex); | |
1325 | return NULL; | |
1326 | } | |
16f1b9ee | 1327 | |
d62a17ae | 1328 | if ((iflp = if_link_params_get(ifp)) == NULL) |
1329 | return NULL; | |
16f1b9ee | 1330 | |
d62a17ae | 1331 | link_params_set_value(s, iflp); |
16f1b9ee | 1332 | |
d62a17ae | 1333 | return ifp; |
16f1b9ee OD |
1334 | } |
1335 | ||
d62a17ae | 1336 | void zebra_interface_if_set_value(struct stream *s, struct interface *ifp) |
16f1b9ee | 1337 | { |
d62a17ae | 1338 | u_char link_params_status = 0; |
1339 | ||
1340 | /* Read interface's index. */ | |
ff880b78 | 1341 | if_set_index(ifp, stream_getl(s)); |
d62a17ae | 1342 | ifp->status = stream_getc(s); |
1343 | ||
1344 | /* Read interface's value. */ | |
1345 | ifp->flags = stream_getq(s); | |
1346 | ifp->ptm_enable = stream_getc(s); | |
1347 | ifp->ptm_status = stream_getc(s); | |
1348 | ifp->metric = stream_getl(s); | |
1349 | ifp->speed = stream_getl(s); | |
1350 | ifp->mtu = stream_getl(s); | |
1351 | ifp->mtu6 = stream_getl(s); | |
1352 | ifp->bandwidth = stream_getl(s); | |
1353 | ifp->ll_type = stream_getl(s); | |
1354 | ifp->hw_addr_len = stream_getl(s); | |
1355 | if (ifp->hw_addr_len) | |
1356 | stream_get(ifp->hw_addr, s, | |
1357 | MIN(ifp->hw_addr_len, INTERFACE_HWADDR_MAX)); | |
1358 | ||
1359 | /* Read Traffic Engineering status */ | |
1360 | link_params_status = stream_getc(s); | |
1361 | /* Then, Traffic Engineering parameters if any */ | |
1362 | if (link_params_status) { | |
1363 | struct if_link_params *iflp = if_link_params_get(ifp); | |
1364 | link_params_set_value(s, iflp); | |
1365 | } | |
16f1b9ee OD |
1366 | } |
1367 | ||
d62a17ae | 1368 | size_t zebra_interface_link_params_write(struct stream *s, |
1369 | struct interface *ifp) | |
16f1b9ee | 1370 | { |
d62a17ae | 1371 | size_t w; |
1372 | struct if_link_params *iflp; | |
1373 | int i; | |
16f1b9ee | 1374 | |
d62a17ae | 1375 | if (s == NULL || ifp == NULL || ifp->link_params == NULL) |
1376 | return 0; | |
16f1b9ee | 1377 | |
d62a17ae | 1378 | iflp = ifp->link_params; |
1379 | w = 0; | |
16f1b9ee | 1380 | |
d62a17ae | 1381 | w += stream_putl(s, iflp->lp_status); |
16f1b9ee | 1382 | |
d62a17ae | 1383 | w += stream_putl(s, iflp->te_metric); |
1384 | w += stream_putf(s, iflp->max_bw); | |
1385 | w += stream_putf(s, iflp->max_rsv_bw); | |
16f1b9ee | 1386 | |
d62a17ae | 1387 | w += stream_putl(s, MAX_CLASS_TYPE); |
1388 | for (i = 0; i < MAX_CLASS_TYPE; i++) | |
1389 | w += stream_putf(s, iflp->unrsv_bw[i]); | |
16f1b9ee | 1390 | |
d62a17ae | 1391 | w += stream_putl(s, iflp->admin_grp); |
1392 | w += stream_putl(s, iflp->rmt_as); | |
1393 | w += stream_put_in_addr(s, &iflp->rmt_ip); | |
16f1b9ee | 1394 | |
d62a17ae | 1395 | w += stream_putl(s, iflp->av_delay); |
1396 | w += stream_putl(s, iflp->min_delay); | |
1397 | w += stream_putl(s, iflp->max_delay); | |
1398 | w += stream_putl(s, iflp->delay_var); | |
16f1b9ee | 1399 | |
d62a17ae | 1400 | w += stream_putf(s, iflp->pkt_loss); |
1401 | w += stream_putf(s, iflp->res_bw); | |
1402 | w += stream_putf(s, iflp->ava_bw); | |
1403 | w += stream_putf(s, iflp->use_bw); | |
16f1b9ee | 1404 | |
d62a17ae | 1405 | return w; |
16f1b9ee OD |
1406 | } |
1407 | ||
1408 | /* | |
0a589359 | 1409 | * format of message for address additon is: |
1410 | * 0 | |
1411 | * 0 1 2 3 4 5 6 7 | |
1412 | * +-+-+-+-+-+-+-+-+ | |
1413 | * | type | ZEBRA_INTERFACE_ADDRESS_ADD or | |
1414 | * +-+-+-+-+-+-+-+-+ ZEBRA_INTERFACE_ADDRES_DELETE | |
1415 | * | | | |
1416 | * + + | |
1417 | * | ifindex | | |
1418 | * + + | |
1419 | * | | | |
1420 | * + + | |
1421 | * | | | |
1422 | * +-+-+-+-+-+-+-+-+ | |
1423 | * | ifc_flags | flags for connected address | |
1424 | * +-+-+-+-+-+-+-+-+ | |
1425 | * | addr_family | | |
1426 | * +-+-+-+-+-+-+-+-+ | |
1427 | * | addr... | | |
1428 | * : : | |
1429 | * | | | |
1430 | * +-+-+-+-+-+-+-+-+ | |
1431 | * | addr_len | len of addr. E.g., addr_len = 4 for ipv4 addrs. | |
1432 | * +-+-+-+-+-+-+-+-+ | |
1433 | * | daddr.. | | |
1434 | * : : | |
1435 | * | | | |
1436 | * +-+-+-+-+-+-+-+-+ | |
0a589359 | 1437 | */ |
1438 | ||
d62a17ae | 1439 | static int memconstant(const void *s, int c, size_t n) |
3fb9cd6e | 1440 | { |
d62a17ae | 1441 | const u_char *p = s; |
3fb9cd6e | 1442 | |
d62a17ae | 1443 | while (n-- > 0) |
1444 | if (*p++ != c) | |
1445 | return 0; | |
1446 | return 1; | |
3fb9cd6e | 1447 | } |
1448 | ||
d5a5c8f0 | 1449 | |
d62a17ae | 1450 | struct connected *zebra_interface_address_read(int type, struct stream *s, |
1451 | vrf_id_t vrf_id) | |
718e3744 | 1452 | { |
d62a17ae | 1453 | ifindex_t ifindex; |
1454 | struct interface *ifp; | |
1455 | struct connected *ifc; | |
1456 | struct prefix p, d, *dp; | |
1457 | int plen; | |
1458 | u_char ifc_flags; | |
1459 | ||
1460 | memset(&p, 0, sizeof(p)); | |
1461 | memset(&d, 0, sizeof(d)); | |
1462 | ||
1463 | /* Get interface index. */ | |
1464 | ifindex = stream_getl(s); | |
1465 | ||
1466 | /* Lookup index. */ | |
1467 | ifp = if_lookup_by_index(ifindex, vrf_id); | |
1468 | if (ifp == NULL) { | |
1469 | zlog_warn("INTERFACE_ADDRESS_%s: Cannot find IF %u in VRF %d", | |
1470 | (type == ZEBRA_INTERFACE_ADDRESS_ADD) ? "ADD" : "DEL", | |
1471 | ifindex, vrf_id); | |
1472 | return NULL; | |
1473 | } | |
1474 | ||
1475 | /* Fetch flag. */ | |
1476 | ifc_flags = stream_getc(s); | |
1477 | ||
1478 | /* Fetch interface address. */ | |
1479 | d.family = p.family = stream_getc(s); | |
1480 | plen = prefix_blen(&d); | |
1481 | ||
1482 | zclient_stream_get_prefix(s, &p); | |
1483 | ||
1484 | /* Fetch destination address. */ | |
1485 | stream_get(&d.u.prefix, s, plen); | |
1486 | ||
1487 | /* N.B. NULL destination pointers are encoded as all zeroes */ | |
1488 | dp = memconstant(&d.u.prefix, 0, plen) ? NULL : &d; | |
1489 | ||
1490 | if (type == ZEBRA_INTERFACE_ADDRESS_ADD) { | |
1491 | ifc = connected_lookup_prefix_exact(ifp, &p); | |
1492 | if (!ifc) { | |
1493 | /* N.B. NULL destination pointers are encoded as all | |
1494 | * zeroes */ | |
1495 | ifc = connected_add_by_prefix(ifp, &p, dp); | |
1496 | } | |
1497 | if (ifc) { | |
1498 | ifc->flags = ifc_flags; | |
1499 | if (ifc->destination) | |
1500 | ifc->destination->prefixlen = | |
1501 | ifc->address->prefixlen; | |
1502 | else if (CHECK_FLAG(ifc->flags, ZEBRA_IFA_PEER)) { | |
1503 | /* carp interfaces on OpenBSD with 0.0.0.0/0 as | |
1504 | * "peer" */ | |
1505 | char buf[PREFIX_STRLEN]; | |
1506 | zlog_warn( | |
1507 | "warning: interface %s address %s " | |
1508 | "with peer flag set, but no peer address!", | |
9d303b37 DL |
1509 | ifp->name, prefix2str(ifc->address, buf, |
1510 | sizeof buf)); | |
d62a17ae | 1511 | UNSET_FLAG(ifc->flags, ZEBRA_IFA_PEER); |
1512 | } | |
1513 | } | |
1514 | } else { | |
1515 | assert(type == ZEBRA_INTERFACE_ADDRESS_DELETE); | |
1516 | ifc = connected_delete_by_prefix(ifp, &p); | |
1517 | } | |
1518 | ||
1519 | return ifc; | |
718e3744 | 1520 | } |
0a589359 | 1521 | |
a80beece DS |
1522 | /* |
1523 | * format of message for neighbor connected address is: | |
1524 | * 0 | |
1525 | * 0 1 2 3 4 5 6 7 | |
1526 | * +-+-+-+-+-+-+-+-+ | |
1527 | * | type | ZEBRA_INTERFACE_NBR_ADDRESS_ADD or | |
1528 | * +-+-+-+-+-+-+-+-+ ZEBRA_INTERFACE_NBR_ADDRES_DELETE | |
1529 | * | | | |
1530 | * + + | |
1531 | * | ifindex | | |
1532 | * + + | |
1533 | * | | | |
1534 | * + + | |
1535 | * | | | |
1536 | * +-+-+-+-+-+-+-+-+ | |
1537 | * | addr_family | | |
1538 | * +-+-+-+-+-+-+-+-+ | |
1539 | * | addr... | | |
1540 | * : : | |
1541 | * | | | |
1542 | * +-+-+-+-+-+-+-+-+ | |
1543 | * | addr_len | len of addr. | |
1544 | * +-+-+-+-+-+-+-+-+ | |
1545 | */ | |
1546 | struct nbr_connected * | |
d62a17ae | 1547 | zebra_interface_nbr_address_read(int type, struct stream *s, vrf_id_t vrf_id) |
a80beece | 1548 | { |
d62a17ae | 1549 | unsigned int ifindex; |
1550 | struct interface *ifp; | |
1551 | struct prefix p; | |
1552 | struct nbr_connected *ifc; | |
1553 | ||
1554 | /* Get interface index. */ | |
1555 | ifindex = stream_getl(s); | |
1556 | ||
1557 | /* Lookup index. */ | |
1558 | ifp = if_lookup_by_index(ifindex, vrf_id); | |
1559 | if (ifp == NULL) { | |
1560 | zlog_warn("INTERFACE_NBR_%s: Cannot find IF %u in VRF %d", | |
1561 | (type == ZEBRA_INTERFACE_NBR_ADDRESS_ADD) ? "ADD" | |
1562 | : "DELETE", | |
1563 | ifindex, vrf_id); | |
1564 | return NULL; | |
1565 | } | |
1566 | ||
1567 | p.family = stream_getc(s); | |
1568 | stream_get(&p.u.prefix, s, prefix_blen(&p)); | |
1569 | p.prefixlen = stream_getc(s); | |
1570 | ||
1571 | if (type == ZEBRA_INTERFACE_NBR_ADDRESS_ADD) { | |
1572 | /* Currently only supporting P2P links, so any new RA source | |
1573 | address is | |
1574 | considered as the replacement of the previously learnt | |
1575 | Link-Local address. */ | |
1576 | if (!(ifc = listnode_head(ifp->nbr_connected))) { | |
1577 | ifc = nbr_connected_new(); | |
1578 | ifc->address = prefix_new(); | |
1579 | ifc->ifp = ifp; | |
1580 | listnode_add(ifp->nbr_connected, ifc); | |
1581 | } | |
1582 | ||
1583 | prefix_copy(ifc->address, &p); | |
1584 | } else { | |
1585 | assert(type == ZEBRA_INTERFACE_NBR_ADDRESS_DELETE); | |
1586 | ||
1587 | ifc = nbr_connected_check(ifp, &p); | |
1588 | if (ifc) | |
1589 | listnode_delete(ifp->nbr_connected, ifc); | |
1590 | } | |
1591 | ||
1592 | return ifc; | |
a80beece | 1593 | } |
6b0655a2 | 1594 | |
d62a17ae | 1595 | struct interface *zebra_interface_vrf_update_read(struct stream *s, |
1596 | vrf_id_t vrf_id, | |
1597 | vrf_id_t *new_vrf_id) | |
c8e264b6 | 1598 | { |
d62a17ae | 1599 | unsigned int ifindex; |
1600 | struct interface *ifp; | |
1601 | vrf_id_t new_id = VRF_DEFAULT; | |
1602 | ||
1603 | /* Get interface index. */ | |
1604 | ifindex = stream_getl(s); | |
1605 | ||
1606 | /* Lookup interface. */ | |
1607 | ifp = if_lookup_by_index(ifindex, vrf_id); | |
1608 | if (ifp == NULL) { | |
1609 | zlog_warn("INTERFACE_VRF_UPDATE: Cannot find IF %u in VRF %d", | |
1610 | ifindex, vrf_id); | |
1611 | return NULL; | |
1612 | } | |
1613 | ||
1614 | /* Fetch new VRF Id. */ | |
1615 | new_id = stream_getw(s); | |
1616 | ||
1617 | *new_vrf_id = new_id; | |
1618 | return ifp; | |
c8e264b6 | 1619 | } |
5c7ef8dc | 1620 | |
1621 | /* filter unwanted messages until the expected one arrives */ | |
d62a17ae | 1622 | static int zclient_read_sync_response(struct zclient *zclient, |
1623 | u_int16_t expected_cmd) | |
5c7ef8dc | 1624 | { |
d62a17ae | 1625 | struct stream *s; |
c31a793b | 1626 | u_int16_t size = -1; |
d62a17ae | 1627 | u_char marker; |
1628 | u_char version; | |
1629 | vrf_id_t vrf_id; | |
1630 | u_int16_t cmd; | |
1631 | fd_set readfds; | |
1632 | int ret; | |
1633 | ||
1634 | ret = 0; | |
1635 | cmd = expected_cmd + 1; | |
1636 | while (ret == 0 && cmd != expected_cmd) { | |
1637 | s = zclient->ibuf; | |
1638 | stream_reset(s); | |
1639 | ||
1640 | /* wait until response arrives */ | |
1641 | FD_ZERO(&readfds); | |
1642 | FD_SET(zclient->sock, &readfds); | |
1643 | select(zclient->sock + 1, &readfds, NULL, NULL, NULL); | |
1644 | if (!FD_ISSET(zclient->sock, &readfds)) | |
1645 | continue; | |
1646 | /* read response */ | |
1647 | ret = zclient_read_header(s, zclient->sock, &size, &marker, | |
1648 | &version, &vrf_id, &cmd); | |
1649 | if (zclient_debug) | |
1650 | zlog_debug("%s: Response (%d bytes) received", __func__, | |
1651 | size); | |
1652 | } | |
1653 | if (ret != 0) { | |
1654 | zlog_err("%s: Invalid Sync Message Reply", __func__); | |
1655 | return -1; | |
1656 | } | |
1657 | ||
1658 | return 0; | |
5c7ef8dc | 1659 | } |
fea12efb | 1660 | /** |
1661 | * Connect to label manager in a syncronous way | |
1662 | * | |
1663 | * It first writes the request to zcient output buffer and then | |
1664 | * immediately reads the answer from the input buffer. | |
1665 | * | |
1666 | * @param zclient Zclient used to connect to label manager (zebra) | |
1667 | * @result Result of response | |
1668 | */ | |
d62a17ae | 1669 | int lm_label_manager_connect(struct zclient *zclient) |
fea12efb | 1670 | { |
d62a17ae | 1671 | int ret; |
1672 | struct stream *s; | |
1673 | u_char result; | |
1674 | ||
1675 | if (zclient_debug) | |
1676 | zlog_debug("Connecting to Label Manager"); | |
1677 | ||
1678 | if (zclient->sock < 0) | |
1679 | return -1; | |
1680 | ||
1681 | /* send request */ | |
1682 | s = zclient->obuf; | |
1683 | stream_reset(s); | |
1684 | zclient_create_header(s, ZEBRA_LABEL_MANAGER_CONNECT, VRF_DEFAULT); | |
1685 | ||
1686 | /* proto */ | |
1687 | stream_putc(s, zclient->redist_default); | |
1688 | /* instance */ | |
1689 | stream_putw(s, zclient->instance); | |
1690 | ||
1691 | /* Put length at the first point of the stream. */ | |
1692 | stream_putw_at(s, 0, stream_get_endp(s)); | |
1693 | ||
1694 | ret = writen(zclient->sock, s->data, stream_get_endp(s)); | |
1695 | if (ret < 0) { | |
1696 | zlog_err("%s: can't write to zclient->sock", __func__); | |
1697 | close(zclient->sock); | |
1698 | zclient->sock = -1; | |
1699 | return -1; | |
1700 | } | |
1701 | if (ret == 0) { | |
1702 | zlog_err("%s: zclient->sock connection closed", __func__); | |
1703 | close(zclient->sock); | |
1704 | zclient->sock = -1; | |
1705 | return -1; | |
1706 | } | |
1707 | if (zclient_debug) | |
1708 | zlog_debug("%s: Label manager connect request (%d bytes) sent", | |
1709 | __func__, ret); | |
1710 | ||
1711 | /* read response */ | |
1712 | if (zclient_read_sync_response(zclient, ZEBRA_LABEL_MANAGER_CONNECT) | |
1713 | != 0) | |
1714 | return -1; | |
1715 | ||
1716 | /* result */ | |
1717 | s = zclient->ibuf; | |
1718 | result = stream_getc(s); | |
1719 | if (zclient_debug) | |
1720 | zlog_debug( | |
1721 | "%s: Label Manager connect response received, result %u", | |
1722 | __func__, result); | |
1723 | ||
1724 | return (int)result; | |
fea12efb | 1725 | } |
1726 | ||
1727 | /** | |
1728 | * Function to request a label chunk in a syncronous way | |
1729 | * | |
1730 | * It first writes the request to zlcient output buffer and then | |
1731 | * immediately reads the answer from the input buffer. | |
1732 | * | |
1733 | * @param zclient Zclient used to connect to label manager (zebra) | |
1734 | * @param keep Avoid garbage collection | |
1735 | * @param chunk_size Amount of labels requested | |
1736 | * @param start To write first assigned chunk label to | |
1737 | * @param end To write last assigned chunk label to | |
1738 | * @result 0 on success, -1 otherwise | |
1739 | */ | |
d62a17ae | 1740 | int lm_get_label_chunk(struct zclient *zclient, u_char keep, |
1741 | uint32_t chunk_size, uint32_t *start, uint32_t *end) | |
fea12efb | 1742 | { |
d62a17ae | 1743 | int ret; |
1744 | struct stream *s; | |
1745 | u_char response_keep; | |
1746 | ||
1747 | if (zclient_debug) | |
1748 | zlog_debug("Getting Label Chunk"); | |
1749 | ||
1750 | if (zclient->sock < 0) | |
1751 | return -1; | |
1752 | ||
1753 | /* send request */ | |
1754 | s = zclient->obuf; | |
1755 | stream_reset(s); | |
1756 | zclient_create_header(s, ZEBRA_GET_LABEL_CHUNK, VRF_DEFAULT); | |
1757 | /* keep */ | |
1758 | stream_putc(s, keep); | |
1759 | /* chunk size */ | |
1760 | stream_putl(s, chunk_size); | |
1761 | /* Put length at the first point of the stream. */ | |
1762 | stream_putw_at(s, 0, stream_get_endp(s)); | |
1763 | ||
1764 | ret = writen(zclient->sock, s->data, stream_get_endp(s)); | |
1765 | if (ret < 0) { | |
1766 | zlog_err("%s: can't write to zclient->sock", __func__); | |
1767 | close(zclient->sock); | |
1768 | zclient->sock = -1; | |
1769 | return -1; | |
1770 | } | |
1771 | if (ret == 0) { | |
1772 | zlog_err("%s: zclient->sock connection closed", __func__); | |
1773 | close(zclient->sock); | |
1774 | zclient->sock = -1; | |
1775 | return -1; | |
1776 | } | |
1777 | if (zclient_debug) | |
1778 | zlog_debug("%s: Label chunk request (%d bytes) sent", __func__, | |
1779 | ret); | |
1780 | ||
1781 | /* read response */ | |
1782 | if (zclient_read_sync_response(zclient, ZEBRA_GET_LABEL_CHUNK) != 0) | |
1783 | return -1; | |
1784 | ||
1785 | s = zclient->ibuf; | |
1786 | /* keep */ | |
1787 | response_keep = stream_getc(s); | |
1788 | /* start and end labels */ | |
1789 | *start = stream_getl(s); | |
1790 | *end = stream_getl(s); | |
1791 | ||
1792 | /* not owning this response */ | |
1793 | if (keep != response_keep) { | |
1794 | zlog_err( | |
1795 | "%s: Invalid Label chunk: %u - %u, keeps mismatch %u != %u", | |
1796 | __func__, *start, *end, keep, response_keep); | |
1797 | } | |
1798 | /* sanity */ | |
1799 | if (*start > *end || *start < MPLS_MIN_UNRESERVED_LABEL | |
1800 | || *end > MPLS_MAX_UNRESERVED_LABEL) { | |
1801 | zlog_err("%s: Invalid Label chunk: %u - %u", __func__, *start, | |
1802 | *end); | |
1803 | return -1; | |
1804 | } | |
1805 | ||
1806 | if (zclient_debug) | |
1807 | zlog_debug("Label Chunk assign: %u - %u (%u) ", *start, *end, | |
1808 | response_keep); | |
1809 | ||
1810 | return 0; | |
fea12efb | 1811 | } |
1812 | ||
1813 | /** | |
1814 | * Function to release a label chunk | |
1815 | * | |
1816 | * @param zclient Zclient used to connect to label manager (zebra) | |
1817 | * @param start First label of chunk | |
1818 | * @param end Last label of chunk | |
1819 | * @result 0 on success, -1 otherwise | |
1820 | */ | |
d62a17ae | 1821 | int lm_release_label_chunk(struct zclient *zclient, uint32_t start, |
1822 | uint32_t end) | |
fea12efb | 1823 | { |
d62a17ae | 1824 | int ret; |
1825 | struct stream *s; | |
1826 | ||
1827 | if (zclient_debug) | |
1828 | zlog_debug("Releasing Label Chunk"); | |
1829 | ||
1830 | if (zclient->sock < 0) | |
1831 | return -1; | |
1832 | ||
1833 | /* send request */ | |
1834 | s = zclient->obuf; | |
1835 | stream_reset(s); | |
1836 | zclient_create_header(s, ZEBRA_RELEASE_LABEL_CHUNK, VRF_DEFAULT); | |
1837 | ||
1838 | /* start */ | |
1839 | stream_putl(s, start); | |
1840 | /* end */ | |
1841 | stream_putl(s, end); | |
1842 | ||
1843 | /* Put length at the first point of the stream. */ | |
1844 | stream_putw_at(s, 0, stream_get_endp(s)); | |
1845 | ||
1846 | ret = writen(zclient->sock, s->data, stream_get_endp(s)); | |
1847 | if (ret < 0) { | |
1848 | zlog_err("%s: can't write to zclient->sock", __func__); | |
1849 | close(zclient->sock); | |
1850 | zclient->sock = -1; | |
1851 | return -1; | |
1852 | } | |
1853 | if (ret == 0) { | |
1854 | zlog_err("%s: zclient->sock connection closed", __func__); | |
1855 | close(zclient->sock); | |
1856 | zclient->sock = -1; | |
1857 | return -1; | |
1858 | } | |
1859 | ||
1860 | return 0; | |
fea12efb | 1861 | } |
c8e264b6 | 1862 | |
6833ae01 | 1863 | int zebra_send_pw(struct zclient *zclient, int command, struct zapi_pw *pw) |
1864 | { | |
1865 | struct stream *s; | |
1866 | ||
1867 | /* Reset stream. */ | |
1868 | s = zclient->obuf; | |
1869 | stream_reset(s); | |
1870 | ||
1871 | zclient_create_header(s, command, VRF_DEFAULT); | |
1872 | stream_write(s, pw->ifname, IF_NAMESIZE); | |
1873 | stream_putl(s, pw->ifindex); | |
1874 | ||
1875 | /* Put type */ | |
1876 | stream_putl(s, pw->type); | |
1877 | ||
1878 | /* Put nexthop */ | |
1879 | stream_putl(s, pw->af); | |
1880 | switch (pw->af) { | |
1881 | case AF_INET: | |
1882 | stream_put_in_addr(s, &pw->nexthop.ipv4); | |
1883 | break; | |
1884 | case AF_INET6: | |
1885 | stream_write(s, (u_char *)&pw->nexthop.ipv6, 16); | |
1886 | break; | |
1887 | default: | |
1888 | zlog_err("%s: unknown af", __func__); | |
1889 | return -1; | |
1890 | } | |
1891 | ||
1892 | /* Put labels */ | |
1893 | stream_putl(s, pw->local_label); | |
1894 | stream_putl(s, pw->remote_label); | |
1895 | ||
1896 | /* Put flags */ | |
1897 | stream_putc(s, pw->flags); | |
1898 | ||
1899 | /* Protocol specific fields */ | |
1900 | stream_write(s, &pw->data, sizeof(union pw_protocol_fields)); | |
1901 | ||
1902 | /* Put length at the first point of the stream. */ | |
1903 | stream_putw_at(s, 0, stream_get_endp(s)); | |
1904 | ||
1905 | return zclient_send_message(zclient); | |
1906 | } | |
1907 | ||
1908 | /* | |
1909 | * Receive PW status update from Zebra and send it to LDE process. | |
1910 | */ | |
1911 | void zebra_read_pw_status_update(int command, struct zclient *zclient, | |
1912 | zebra_size_t length, vrf_id_t vrf_id, | |
1913 | struct zapi_pw_status *pw) | |
1914 | { | |
1915 | struct stream *s; | |
1916 | ||
1917 | memset(pw, 0, sizeof(struct zapi_pw_status)); | |
1918 | s = zclient->ibuf; | |
1919 | ||
1920 | /* Get data. */ | |
1921 | stream_get(pw->ifname, s, IF_NAMESIZE); | |
1922 | pw->ifindex = stream_getl(s); | |
1923 | pw->status = stream_getl(s); | |
1924 | } | |
1925 | ||
718e3744 | 1926 | /* Zebra client message read function. */ |
d62a17ae | 1927 | static int zclient_read(struct thread *thread) |
718e3744 | 1928 | { |
d62a17ae | 1929 | size_t already; |
1930 | uint16_t length, command; | |
1931 | uint8_t marker, version; | |
1932 | vrf_id_t vrf_id; | |
1933 | struct zclient *zclient; | |
1934 | ||
1935 | /* Get socket to zebra. */ | |
1936 | zclient = THREAD_ARG(thread); | |
1937 | zclient->t_read = NULL; | |
1938 | ||
1939 | /* Read zebra header (if we don't have it already). */ | |
1940 | if ((already = stream_get_endp(zclient->ibuf)) < ZEBRA_HEADER_SIZE) { | |
1941 | ssize_t nbyte; | |
1942 | if (((nbyte = stream_read_try(zclient->ibuf, zclient->sock, | |
1943 | ZEBRA_HEADER_SIZE - already)) | |
1944 | == 0) | |
1945 | || (nbyte == -1)) { | |
1946 | if (zclient_debug) | |
1947 | zlog_debug( | |
1948 | "zclient connection closed socket [%d].", | |
1949 | zclient->sock); | |
1950 | return zclient_failed(zclient); | |
1951 | } | |
1952 | if (nbyte != (ssize_t)(ZEBRA_HEADER_SIZE - already)) { | |
1953 | /* Try again later. */ | |
1954 | zclient_event(ZCLIENT_READ, zclient); | |
1955 | return 0; | |
1956 | } | |
1957 | already = ZEBRA_HEADER_SIZE; | |
634f9ea2 | 1958 | } |
d62a17ae | 1959 | |
1960 | /* Reset to read from the beginning of the incoming packet. */ | |
1961 | stream_set_getp(zclient->ibuf, 0); | |
1962 | ||
1963 | /* Fetch header values. */ | |
1964 | length = stream_getw(zclient->ibuf); | |
1965 | marker = stream_getc(zclient->ibuf); | |
1966 | version = stream_getc(zclient->ibuf); | |
1967 | vrf_id = stream_getw(zclient->ibuf); | |
1968 | command = stream_getw(zclient->ibuf); | |
1969 | ||
1970 | if (marker != ZEBRA_HEADER_MARKER || version != ZSERV_VERSION) { | |
1971 | zlog_err( | |
1972 | "%s: socket %d version mismatch, marker %d, version %d", | |
1973 | __func__, zclient->sock, marker, version); | |
1974 | return zclient_failed(zclient); | |
634f9ea2 | 1975 | } |
d62a17ae | 1976 | |
1977 | if (length < ZEBRA_HEADER_SIZE) { | |
1978 | zlog_err("%s: socket %d message length %u is less than %d ", | |
1979 | __func__, zclient->sock, length, ZEBRA_HEADER_SIZE); | |
1980 | return zclient_failed(zclient); | |
634f9ea2 | 1981 | } |
d62a17ae | 1982 | |
1983 | /* Length check. */ | |
1984 | if (length > STREAM_SIZE(zclient->ibuf)) { | |
1985 | struct stream *ns; | |
1986 | zlog_warn( | |
1987 | "%s: message size %u exceeds buffer size %lu, expanding...", | |
1988 | __func__, length, (u_long)STREAM_SIZE(zclient->ibuf)); | |
1989 | ns = stream_new(length); | |
1990 | stream_copy(ns, zclient->ibuf); | |
1991 | stream_free(zclient->ibuf); | |
1992 | zclient->ibuf = ns; | |
1993 | } | |
1994 | ||
1995 | /* Read rest of zebra packet. */ | |
1996 | if (already < length) { | |
1997 | ssize_t nbyte; | |
1998 | if (((nbyte = stream_read_try(zclient->ibuf, zclient->sock, | |
1999 | length - already)) | |
2000 | == 0) | |
2001 | || (nbyte == -1)) { | |
2002 | if (zclient_debug) | |
2003 | zlog_debug( | |
2004 | "zclient connection closed socket [%d].", | |
2005 | zclient->sock); | |
2006 | return zclient_failed(zclient); | |
2007 | } | |
2008 | if (nbyte != (ssize_t)(length - already)) { | |
2009 | /* Try again later. */ | |
2010 | zclient_event(ZCLIENT_READ, zclient); | |
2011 | return 0; | |
2012 | } | |
2013 | } | |
2014 | ||
2015 | length -= ZEBRA_HEADER_SIZE; | |
2016 | ||
2017 | if (zclient_debug) | |
2018 | zlog_debug("zclient 0x%p command 0x%x VRF %u\n", | |
2019 | (void *)zclient, command, vrf_id); | |
2020 | ||
2021 | switch (command) { | |
2022 | case ZEBRA_ROUTER_ID_UPDATE: | |
2023 | if (zclient->router_id_update) | |
2024 | (*zclient->router_id_update)(command, zclient, length, | |
2025 | vrf_id); | |
2026 | break; | |
2027 | case ZEBRA_VRF_ADD: | |
2028 | zclient_vrf_add(zclient, vrf_id); | |
2029 | break; | |
2030 | case ZEBRA_VRF_DELETE: | |
2031 | zclient_vrf_delete(zclient, vrf_id); | |
2032 | break; | |
2033 | case ZEBRA_INTERFACE_ADD: | |
2034 | if (zclient->interface_add) | |
2035 | (*zclient->interface_add)(command, zclient, length, | |
2036 | vrf_id); | |
2037 | break; | |
2038 | case ZEBRA_INTERFACE_DELETE: | |
2039 | if (zclient->interface_delete) | |
2040 | (*zclient->interface_delete)(command, zclient, length, | |
2041 | vrf_id); | |
2042 | break; | |
2043 | case ZEBRA_INTERFACE_ADDRESS_ADD: | |
2044 | if (zclient->interface_address_add) | |
2045 | (*zclient->interface_address_add)(command, zclient, | |
2046 | length, vrf_id); | |
2047 | break; | |
2048 | case ZEBRA_INTERFACE_ADDRESS_DELETE: | |
2049 | if (zclient->interface_address_delete) | |
2050 | (*zclient->interface_address_delete)(command, zclient, | |
2051 | length, vrf_id); | |
2052 | break; | |
2053 | case ZEBRA_INTERFACE_BFD_DEST_UPDATE: | |
2054 | if (zclient->interface_bfd_dest_update) | |
2055 | (*zclient->interface_bfd_dest_update)(command, zclient, | |
2056 | length, vrf_id); | |
2057 | break; | |
2058 | case ZEBRA_INTERFACE_NBR_ADDRESS_ADD: | |
2059 | if (zclient->interface_nbr_address_add) | |
2060 | (*zclient->interface_nbr_address_add)(command, zclient, | |
2061 | length, vrf_id); | |
2062 | break; | |
2063 | case ZEBRA_INTERFACE_NBR_ADDRESS_DELETE: | |
2064 | if (zclient->interface_nbr_address_delete) | |
2065 | (*zclient->interface_nbr_address_delete)( | |
2066 | command, zclient, length, vrf_id); | |
2067 | break; | |
2068 | case ZEBRA_INTERFACE_UP: | |
2069 | if (zclient->interface_up) | |
2070 | (*zclient->interface_up)(command, zclient, length, | |
2071 | vrf_id); | |
2072 | break; | |
2073 | case ZEBRA_INTERFACE_DOWN: | |
2074 | if (zclient->interface_down) | |
2075 | (*zclient->interface_down)(command, zclient, length, | |
2076 | vrf_id); | |
2077 | break; | |
2078 | case ZEBRA_INTERFACE_VRF_UPDATE: | |
2079 | if (zclient->interface_vrf_update) | |
2080 | (*zclient->interface_vrf_update)(command, zclient, | |
2081 | length, vrf_id); | |
2082 | break; | |
2083 | case ZEBRA_NEXTHOP_UPDATE: | |
2084 | if (zclient_debug) | |
2085 | zlog_debug("zclient rcvd nexthop update\n"); | |
2086 | if (zclient->nexthop_update) | |
2087 | (*zclient->nexthop_update)(command, zclient, length, | |
2088 | vrf_id); | |
2089 | break; | |
2090 | case ZEBRA_IMPORT_CHECK_UPDATE: | |
2091 | if (zclient_debug) | |
2092 | zlog_debug("zclient rcvd import check update\n"); | |
2093 | if (zclient->import_check_update) | |
2094 | (*zclient->import_check_update)(command, zclient, | |
2095 | length, vrf_id); | |
2096 | break; | |
2097 | case ZEBRA_BFD_DEST_REPLAY: | |
2098 | if (zclient->bfd_dest_replay) | |
2099 | (*zclient->bfd_dest_replay)(command, zclient, length, | |
2100 | vrf_id); | |
2101 | break; | |
74489921 RW |
2102 | case ZEBRA_REDISTRIBUTE_ROUTE_ADD: |
2103 | if (zclient->redistribute_route_add) | |
2104 | (*zclient->redistribute_route_add)(command, zclient, | |
2105 | length, vrf_id); | |
d62a17ae | 2106 | break; |
74489921 RW |
2107 | case ZEBRA_REDISTRIBUTE_ROUTE_DEL: |
2108 | if (zclient->redistribute_route_del) | |
2109 | (*zclient->redistribute_route_del)(command, zclient, | |
2110 | length, vrf_id); | |
d62a17ae | 2111 | break; |
2112 | case ZEBRA_INTERFACE_LINK_PARAMS: | |
2113 | if (zclient->interface_link_params) | |
2114 | (*zclient->interface_link_params)(command, zclient, | |
2115 | length); | |
2116 | break; | |
2117 | case ZEBRA_FEC_UPDATE: | |
2118 | if (zclient_debug) | |
2119 | zlog_debug("zclient rcvd fec update\n"); | |
2120 | if (zclient->fec_update) | |
2121 | (*zclient->fec_update)(command, zclient, length); | |
2122 | break; | |
2123 | case ZEBRA_VNI_ADD: | |
2124 | if (zclient->local_vni_add) | |
2125 | (*zclient->local_vni_add)(command, zclient, length, | |
2126 | vrf_id); | |
2127 | break; | |
2128 | case ZEBRA_VNI_DEL: | |
2129 | if (zclient->local_vni_del) | |
2130 | (*zclient->local_vni_del)(command, zclient, length, | |
2131 | vrf_id); | |
2132 | break; | |
2133 | case ZEBRA_MACIP_ADD: | |
2134 | if (zclient->local_macip_add) | |
2135 | (*zclient->local_macip_add)(command, zclient, length, | |
2136 | vrf_id); | |
2137 | break; | |
2138 | case ZEBRA_MACIP_DEL: | |
2139 | if (zclient->local_macip_del) | |
2140 | (*zclient->local_macip_del)(command, zclient, length, | |
2141 | vrf_id); | |
2142 | break; | |
6833ae01 | 2143 | case ZEBRA_PW_STATUS_UPDATE: |
2144 | if (zclient->pw_status_update) | |
2145 | (*zclient->pw_status_update)(command, zclient, length, | |
2146 | vrf_id); | |
2147 | break; | |
d62a17ae | 2148 | default: |
2149 | break; | |
634f9ea2 | 2150 | } |
d62a17ae | 2151 | |
2152 | if (zclient->sock < 0) | |
2153 | /* Connection was closed during packet processing. */ | |
2154 | return -1; | |
2155 | ||
2156 | /* Register read thread. */ | |
2157 | stream_reset(zclient->ibuf); | |
2158 | zclient_event(ZCLIENT_READ, zclient); | |
2159 | ||
2160 | return 0; | |
718e3744 | 2161 | } |
2162 | ||
d62a17ae | 2163 | void zclient_redistribute(int command, struct zclient *zclient, afi_t afi, |
2164 | int type, u_short instance, vrf_id_t vrf_id) | |
718e3744 | 2165 | { |
718e3744 | 2166 | |
d62a17ae | 2167 | if (instance) { |
2168 | if (command == ZEBRA_REDISTRIBUTE_ADD) { | |
2169 | if (redist_check_instance( | |
2170 | &zclient->mi_redist[afi][type], instance)) | |
2171 | return; | |
2172 | redist_add_instance(&zclient->mi_redist[afi][type], | |
2173 | instance); | |
2174 | } else { | |
2175 | if (!redist_check_instance( | |
2176 | &zclient->mi_redist[afi][type], instance)) | |
2177 | return; | |
2178 | redist_del_instance(&zclient->mi_redist[afi][type], | |
2179 | instance); | |
2180 | } | |
2181 | ||
2182 | } else { | |
2183 | if (command == ZEBRA_REDISTRIBUTE_ADD) { | |
2184 | if (vrf_bitmap_check(zclient->redist[afi][type], | |
2185 | vrf_id)) | |
2186 | return; | |
2187 | vrf_bitmap_set(zclient->redist[afi][type], vrf_id); | |
2188 | } else { | |
2189 | if (!vrf_bitmap_check(zclient->redist[afi][type], | |
2190 | vrf_id)) | |
2191 | return; | |
2192 | vrf_bitmap_unset(zclient->redist[afi][type], vrf_id); | |
2193 | } | |
2194 | } | |
2195 | ||
2196 | if (zclient->sock > 0) | |
2197 | zebra_redistribute_send(command, zclient, afi, type, instance, | |
2198 | vrf_id); | |
718e3744 | 2199 | } |
2200 | ||
718e3744 | 2201 | |
d62a17ae | 2202 | void zclient_redistribute_default(int command, struct zclient *zclient, |
2203 | vrf_id_t vrf_id) | |
718e3744 | 2204 | { |
718e3744 | 2205 | |
d62a17ae | 2206 | if (command == ZEBRA_REDISTRIBUTE_DEFAULT_ADD) { |
2207 | if (vrf_bitmap_check(zclient->default_information, vrf_id)) | |
2208 | return; | |
2209 | vrf_bitmap_set(zclient->default_information, vrf_id); | |
2210 | } else { | |
2211 | if (!vrf_bitmap_check(zclient->default_information, vrf_id)) | |
2212 | return; | |
2213 | vrf_bitmap_unset(zclient->default_information, vrf_id); | |
2214 | } | |
2215 | ||
2216 | if (zclient->sock > 0) | |
2217 | zebra_message_send(zclient, command, vrf_id); | |
718e3744 | 2218 | } |
2219 | ||
d62a17ae | 2220 | static void zclient_event(enum event event, struct zclient *zclient) |
718e3744 | 2221 | { |
d62a17ae | 2222 | switch (event) { |
2223 | case ZCLIENT_SCHEDULE: | |
2224 | thread_add_event(zclient->master, zclient_connect, zclient, 0, | |
2225 | &zclient->t_connect); | |
2226 | break; | |
2227 | case ZCLIENT_CONNECT: | |
2228 | if (zclient_debug) | |
2229 | zlog_debug( | |
2230 | "zclient connect failures: %d schedule interval is now %d", | |
2231 | zclient->fail, zclient->fail < 3 ? 10 : 60); | |
2232 | thread_add_timer(zclient->master, zclient_connect, zclient, | |
2233 | zclient->fail < 3 ? 10 : 60, | |
2234 | &zclient->t_connect); | |
2235 | break; | |
2236 | case ZCLIENT_READ: | |
2237 | zclient->t_read = NULL; | |
2238 | thread_add_read(zclient->master, zclient_read, zclient, | |
2239 | zclient->sock, &zclient->t_read); | |
2240 | break; | |
2241 | } | |
718e3744 | 2242 | } |
b5114685 | 2243 | |
e0ae31b8 DS |
2244 | void zclient_interface_set_master(struct zclient *client, |
2245 | struct interface *master, | |
2246 | struct interface *slave) | |
2247 | { | |
2248 | struct stream *s; | |
2249 | ||
2250 | s = client->obuf; | |
2251 | stream_reset(s); | |
2252 | ||
2253 | zclient_create_header(s, ZEBRA_INTERFACE_SET_MASTER, master->vrf_id); | |
2254 | ||
2255 | stream_putw(s, master->vrf_id); | |
2256 | stream_putl(s, master->ifindex); | |
2257 | stream_putw(s, slave->vrf_id); | |
2258 | stream_putl(s, slave->ifindex); | |
2259 | ||
2260 | stream_putw_at(s, 0, stream_get_endp(s)); | |
2261 | zclient_send_message(client); | |
2262 | } |