]>
Commit | Line | Data |
---|---|---|
718e3744 | 1 | /* Zebra daemon server routine. |
2 | * Copyright (C) 1997, 98, 99 Kunihiro Ishiguro | |
3 | * | |
4 | * This file is part of GNU Zebra. | |
5 | * | |
6 | * GNU Zebra is free software; you can redistribute it and/or modify it | |
7 | * under the terms of the GNU General Public License as published by the | |
8 | * Free Software Foundation; either version 2, or (at your option) any | |
9 | * later version. | |
10 | * | |
11 | * GNU Zebra is distributed in the hope that it will be useful, but | |
12 | * WITHOUT ANY WARRANTY; without even the implied warranty of | |
13 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU | |
14 | * General Public License for more details. | |
15 | * | |
16 | * You should have received a copy of the GNU General Public License | |
17 | * along with GNU Zebra; see the file COPYING. If not, write to the | |
18 | * Free Software Foundation, Inc., 59 Temple Place - Suite 330, | |
19 | * Boston, MA 02111-1307, USA. | |
20 | */ | |
21 | ||
22 | #include <zebra.h> | |
23 | ||
24 | #include "prefix.h" | |
25 | #include "command.h" | |
26 | #include "if.h" | |
27 | #include "thread.h" | |
28 | #include "stream.h" | |
29 | #include "memory.h" | |
30 | #include "table.h" | |
31 | #include "rib.h" | |
32 | #include "network.h" | |
33 | #include "sockunion.h" | |
34 | #include "log.h" | |
35 | #include "zclient.h" | |
edd7c245 | 36 | #include "privs.h" |
719e9741 | 37 | #include "network.h" |
38 | #include "buffer.h" | |
fb018d25 | 39 | #include "nexthop.h" |
718e3744 | 40 | |
41 | #include "zebra/zserv.h" | |
18a6dce6 | 42 | #include "zebra/router-id.h" |
718e3744 | 43 | #include "zebra/redistribute.h" |
44 | #include "zebra/debug.h" | |
45 | #include "zebra/ipforward.h" | |
fb018d25 | 46 | #include "zebra/zebra_rnh.h" |
6b0655a2 | 47 | |
718e3744 | 48 | /* Event list of zebra. */ |
49 | enum event { ZEBRA_SERV, ZEBRA_READ, ZEBRA_WRITE }; | |
50 | ||
b21b19c5 | 51 | extern struct zebra_t zebrad; |
718e3744 | 52 | |
b9df2d25 | 53 | static void zebra_event (enum event event, int sock, struct zserv *client); |
ccf3557b | 54 | |
edd7c245 | 55 | extern struct zebra_privs_t zserv_privs; |
6b0655a2 | 56 | |
719e9741 | 57 | static void zebra_client_close (struct zserv *client); |
ccf3557b | 58 | |
719e9741 | 59 | static int |
60 | zserv_delayed_close(struct thread *thread) | |
ccf3557b | 61 | { |
719e9741 | 62 | struct zserv *client = THREAD_ARG(thread); |
ccf3557b | 63 | |
719e9741 | 64 | client->t_suicide = NULL; |
65 | zebra_client_close(client); | |
ccf3557b | 66 | return 0; |
67 | } | |
68 | ||
2ea1ab1c VT |
69 | /* When client connects, it sends hello message |
70 | * with promise to send zebra routes of specific type. | |
71 | * Zebra stores a socket fd of the client into | |
72 | * this array. And use it to clean up routes that | |
73 | * client didn't remove for some reasons after closing | |
74 | * connection. | |
75 | */ | |
76 | static int route_type_oaths[ZEBRA_ROUTE_MAX]; | |
77 | ||
719e9741 | 78 | static int |
79 | zserv_flush_data(struct thread *thread) | |
ccf3557b | 80 | { |
719e9741 | 81 | struct zserv *client = THREAD_ARG(thread); |
ccf3557b | 82 | |
719e9741 | 83 | client->t_write = NULL; |
84 | if (client->t_suicide) | |
ccf3557b | 85 | { |
719e9741 | 86 | zebra_client_close(client); |
87 | return -1; | |
ccf3557b | 88 | } |
719e9741 | 89 | switch (buffer_flush_available(client->wb, client->sock)) |
ccf3557b | 90 | { |
719e9741 | 91 | case BUFFER_ERROR: |
92 | zlog_warn("%s: buffer_flush_available failed on zserv client fd %d, " | |
93 | "closing", __func__, client->sock); | |
94 | zebra_client_close(client); | |
95 | break; | |
96 | case BUFFER_PENDING: | |
97 | client->t_write = thread_add_write(zebrad.master, zserv_flush_data, | |
98 | client, client->sock); | |
99 | break; | |
100 | case BUFFER_EMPTY: | |
101 | break; | |
ccf3557b | 102 | } |
719e9741 | 103 | return 0; |
104 | } | |
ccf3557b | 105 | |
fb018d25 | 106 | int |
719e9741 | 107 | zebra_server_send_message(struct zserv *client) |
108 | { | |
109 | if (client->t_suicide) | |
110 | return -1; | |
111 | switch (buffer_write(client->wb, client->sock, STREAM_DATA(client->obuf), | |
112 | stream_get_endp(client->obuf))) | |
113 | { | |
114 | case BUFFER_ERROR: | |
115 | zlog_warn("%s: buffer_write failed to zserv client fd %d, closing", | |
116 | __func__, client->sock); | |
117 | /* Schedule a delayed close since many of the functions that call this | |
118 | one do not check the return code. They do not allow for the | |
119 | possibility that an I/O error may have caused the client to be | |
120 | deleted. */ | |
121 | client->t_suicide = thread_add_event(zebrad.master, zserv_delayed_close, | |
122 | client, 0); | |
123 | return -1; | |
719e9741 | 124 | case BUFFER_EMPTY: |
125 | THREAD_OFF(client->t_write); | |
126 | break; | |
127 | case BUFFER_PENDING: | |
128 | THREAD_WRITE_ON(zebrad.master, client->t_write, | |
129 | zserv_flush_data, client, client->sock); | |
130 | break; | |
131 | } | |
ccf3557b | 132 | return 0; |
133 | } | |
134 | ||
fb018d25 | 135 | void |
c1b9800a | 136 | zserv_create_header (struct stream *s, uint16_t cmd) |
137 | { | |
138 | /* length placeholder, caller can update */ | |
139 | stream_putw (s, ZEBRA_HEADER_SIZE); | |
140 | stream_putc (s, ZEBRA_HEADER_MARKER); | |
141 | stream_putc (s, ZSERV_VERSION); | |
142 | stream_putw (s, cmd); | |
143 | } | |
144 | ||
51d4ef83 JB |
145 | static void |
146 | zserv_encode_interface (struct stream *s, struct interface *ifp) | |
147 | { | |
148 | /* Interface information. */ | |
149 | stream_put (s, ifp->name, INTERFACE_NAMSIZ); | |
150 | stream_putl (s, ifp->ifindex); | |
151 | stream_putc (s, ifp->status); | |
152 | stream_putq (s, ifp->flags); | |
153 | stream_putl (s, ifp->metric); | |
154 | stream_putl (s, ifp->mtu); | |
155 | stream_putl (s, ifp->mtu6); | |
156 | stream_putl (s, ifp->bandwidth); | |
157 | #ifdef HAVE_STRUCT_SOCKADDR_DL | |
ca3ccd87 | 158 | stream_put (s, &ifp->sdl, sizeof (ifp->sdl_storage)); |
51d4ef83 JB |
159 | #else |
160 | stream_putl (s, ifp->hw_addr_len); | |
161 | if (ifp->hw_addr_len) | |
162 | stream_put (s, ifp->hw_addr, ifp->hw_addr_len); | |
163 | #endif /* HAVE_STRUCT_SOCKADDR_DL */ | |
164 | ||
165 | /* Write packet size. */ | |
166 | stream_putw_at (s, 0, stream_get_endp (s)); | |
167 | } | |
168 | ||
718e3744 | 169 | /* Interface is added. Send ZEBRA_INTERFACE_ADD to client. */ |
b9df2d25 | 170 | /* |
171 | * This function is called in the following situations: | |
172 | * - in response to a 3-byte ZEBRA_INTERFACE_ADD request | |
173 | * from the client. | |
174 | * - at startup, when zebra figures out the available interfaces | |
175 | * - when an interface is added (where support for | |
176 | * RTM_IFANNOUNCE or AF_NETLINK sockets is available), or when | |
177 | * an interface is marked IFF_UP (i.e., an RTM_IFINFO message is | |
178 | * received) | |
179 | */ | |
718e3744 | 180 | int |
181 | zsend_interface_add (struct zserv *client, struct interface *ifp) | |
182 | { | |
183 | struct stream *s; | |
184 | ||
185 | /* Check this client need interface information. */ | |
186 | if (! client->ifinfo) | |
719e9741 | 187 | return 0; |
718e3744 | 188 | |
189 | s = client->obuf; | |
190 | stream_reset (s); | |
191 | ||
c1b9800a | 192 | zserv_create_header (s, ZEBRA_INTERFACE_ADD); |
51d4ef83 | 193 | zserv_encode_interface (s, ifp); |
718e3744 | 194 | |
719e9741 | 195 | return zebra_server_send_message(client); |
718e3744 | 196 | } |
197 | ||
198 | /* Interface deletion from zebra daemon. */ | |
199 | int | |
200 | zsend_interface_delete (struct zserv *client, struct interface *ifp) | |
201 | { | |
202 | struct stream *s; | |
203 | ||
204 | /* Check this client need interface information. */ | |
205 | if (! client->ifinfo) | |
719e9741 | 206 | return 0; |
718e3744 | 207 | |
208 | s = client->obuf; | |
209 | stream_reset (s); | |
718e3744 | 210 | |
51d4ef83 JB |
211 | zserv_create_header (s, ZEBRA_INTERFACE_DELETE); |
212 | zserv_encode_interface (s, ifp); | |
718e3744 | 213 | |
719e9741 | 214 | return zebra_server_send_message (client); |
718e3744 | 215 | } |
216 | ||
b9df2d25 | 217 | /* Interface address is added/deleted. Send ZEBRA_INTERFACE_ADDRESS_ADD or |
218 | * ZEBRA_INTERFACE_ADDRESS_DELETE to the client. | |
219 | * | |
220 | * A ZEBRA_INTERFACE_ADDRESS_ADD is sent in the following situations: | |
221 | * - in response to a 3-byte ZEBRA_INTERFACE_ADD request | |
222 | * from the client, after the ZEBRA_INTERFACE_ADD has been | |
223 | * sent from zebra to the client | |
224 | * - redistribute new address info to all clients in the following situations | |
225 | * - at startup, when zebra figures out the available interfaces | |
226 | * - when an interface is added (where support for | |
227 | * RTM_IFANNOUNCE or AF_NETLINK sockets is available), or when | |
228 | * an interface is marked IFF_UP (i.e., an RTM_IFINFO message is | |
229 | * received) | |
230 | * - for the vty commands "ip address A.B.C.D/M [<secondary>|<label LINE>]" | |
231 | * and "no bandwidth <1-10000000>", "ipv6 address X:X::X:X/M" | |
232 | * - when an RTM_NEWADDR message is received from the kernel, | |
233 | * | |
234 | * The call tree that triggers ZEBRA_INTERFACE_ADDRESS_DELETE: | |
235 | * | |
236 | * zsend_interface_address(DELETE) | |
237 | * ^ | |
238 | * | | |
239 | * zebra_interface_address_delete_update | |
240 | * ^ ^ ^ | |
6eb8827d | 241 | * | | if_delete_update |
242 | * | | | |
b9df2d25 | 243 | * ip_address_uninstall connected_delete_ipv4 |
244 | * [ipv6_addresss_uninstall] [connected_delete_ipv6] | |
245 | * ^ ^ | |
246 | * | | | |
247 | * | RTM_NEWADDR on routing/netlink socket | |
248 | * | | |
249 | * vty commands: | |
250 | * "no ip address A.B.C.D/M [label LINE]" | |
251 | * "no ip address A.B.C.D/M secondary" | |
252 | * ["no ipv6 address X:X::X:X/M"] | |
253 | * | |
254 | */ | |
718e3744 | 255 | int |
b9df2d25 | 256 | zsend_interface_address (int cmd, struct zserv *client, |
257 | struct interface *ifp, struct connected *ifc) | |
718e3744 | 258 | { |
259 | int blen; | |
260 | struct stream *s; | |
261 | struct prefix *p; | |
262 | ||
263 | /* Check this client need interface information. */ | |
264 | if (! client->ifinfo) | |
719e9741 | 265 | return 0; |
718e3744 | 266 | |
267 | s = client->obuf; | |
268 | stream_reset (s); | |
c1b9800a | 269 | |
270 | zserv_create_header (s, cmd); | |
718e3744 | 271 | stream_putl (s, ifp->ifindex); |
272 | ||
273 | /* Interface address flag. */ | |
274 | stream_putc (s, ifc->flags); | |
275 | ||
276 | /* Prefix information. */ | |
277 | p = ifc->address; | |
278 | stream_putc (s, p->family); | |
279 | blen = prefix_blen (p); | |
280 | stream_put (s, &p->u.prefix, blen); | |
b9df2d25 | 281 | |
282 | /* | |
283 | * XXX gnu version does not send prefixlen for ZEBRA_INTERFACE_ADDRESS_DELETE | |
284 | * but zebra_interface_address_delete_read() in the gnu version | |
285 | * expects to find it | |
286 | */ | |
718e3744 | 287 | stream_putc (s, p->prefixlen); |
288 | ||
289 | /* Destination. */ | |
290 | p = ifc->destination; | |
291 | if (p) | |
292 | stream_put (s, &p->u.prefix, blen); | |
293 | else | |
294 | stream_put (s, NULL, blen); | |
295 | ||
296 | /* Write packet size. */ | |
297 | stream_putw_at (s, 0, stream_get_endp (s)); | |
298 | ||
719e9741 | 299 | return zebra_server_send_message(client); |
718e3744 | 300 | } |
301 | ||
a80beece DS |
302 | static int |
303 | zsend_interface_nbr_address (int cmd, struct zserv *client, | |
304 | struct interface *ifp, struct nbr_connected *ifc) | |
305 | { | |
306 | int blen; | |
307 | struct stream *s; | |
308 | struct prefix *p; | |
309 | ||
310 | /* Check this client need interface information. */ | |
311 | if (! client->ifinfo) | |
312 | return 0; | |
313 | ||
314 | s = client->obuf; | |
315 | stream_reset (s); | |
316 | ||
317 | zserv_create_header (s, cmd); | |
318 | stream_putl (s, ifp->ifindex); | |
319 | ||
320 | /* Prefix information. */ | |
321 | p = ifc->address; | |
322 | stream_putc (s, p->family); | |
323 | blen = prefix_blen (p); | |
324 | stream_put (s, &p->u.prefix, blen); | |
325 | ||
326 | /* | |
327 | * XXX gnu version does not send prefixlen for ZEBRA_INTERFACE_ADDRESS_DELETE | |
328 | * but zebra_interface_address_delete_read() in the gnu version | |
329 | * expects to find it | |
330 | */ | |
331 | stream_putc (s, p->prefixlen); | |
332 | ||
333 | /* Write packet size. */ | |
334 | stream_putw_at (s, 0, stream_get_endp (s)); | |
335 | ||
336 | return zebra_server_send_message(client); | |
337 | } | |
338 | ||
339 | /* Interface address addition. */ | |
340 | static void | |
341 | zebra_interface_nbr_address_add_update (struct interface *ifp, | |
342 | struct nbr_connected *ifc) | |
343 | { | |
344 | struct listnode *node, *nnode; | |
345 | struct zserv *client; | |
346 | struct prefix *p; | |
347 | ||
348 | if (IS_ZEBRA_DEBUG_EVENT) | |
349 | { | |
350 | char buf[INET6_ADDRSTRLEN]; | |
351 | ||
352 | p = ifc->address; | |
353 | zlog_debug ("MESSAGE: ZEBRA_INTERFACE_NBR_ADDRESS_ADD %s/%d on %s", | |
354 | inet_ntop (p->family, &p->u.prefix, buf, INET6_ADDRSTRLEN), | |
355 | p->prefixlen, ifc->ifp->name); | |
356 | } | |
357 | ||
358 | for (ALL_LIST_ELEMENTS (zebrad.client_list, node, nnode, client)) | |
359 | if (client->ifinfo) | |
360 | zsend_interface_nbr_address (ZEBRA_INTERFACE_NBR_ADDRESS_ADD, client, ifp, ifc); | |
361 | } | |
362 | ||
363 | /* Interface address deletion. */ | |
364 | static void | |
365 | zebra_interface_nbr_address_delete_update (struct interface *ifp, | |
366 | struct nbr_connected *ifc) | |
367 | { | |
368 | struct listnode *node, *nnode; | |
369 | struct zserv *client; | |
370 | struct prefix *p; | |
371 | ||
372 | if (IS_ZEBRA_DEBUG_EVENT) | |
373 | { | |
374 | char buf[INET6_ADDRSTRLEN]; | |
375 | ||
376 | p = ifc->address; | |
377 | zlog_debug ("MESSAGE: ZEBRA_INTERFACE_NBR_ADDRESS_DELETE %s/%d on %s", | |
378 | inet_ntop (p->family, &p->u.prefix, buf, INET6_ADDRSTRLEN), | |
379 | p->prefixlen, ifc->ifp->name); | |
380 | } | |
381 | ||
382 | for (ALL_LIST_ELEMENTS (zebrad.client_list, node, nnode, client)) | |
383 | if (client->ifinfo) | |
384 | zsend_interface_nbr_address (ZEBRA_INTERFACE_NBR_ADDRESS_DELETE, client, ifp, ifc); | |
385 | } | |
386 | ||
387 | /* Add new nbr connected IPv6 address if none exists already, or replace the | |
388 | existing one if an ifc entry is found on the interface. */ | |
389 | void | |
390 | nbr_connected_replacement_add_ipv6 (struct interface *ifp, struct in6_addr *address, | |
391 | u_char prefixlen) | |
392 | { | |
393 | struct nbr_connected *ifc; | |
394 | struct prefix p; | |
395 | ||
396 | p.family = AF_INET6; | |
397 | IPV6_ADDR_COPY (&p.u.prefix, address); | |
398 | p.prefixlen = prefixlen; | |
399 | ||
400 | if (nbr_connected_check(ifp, &p)) | |
401 | return; | |
402 | ||
403 | if (!(ifc = listnode_head(ifp->nbr_connected))) | |
404 | { | |
405 | /* new addition */ | |
406 | ifc = nbr_connected_new (); | |
407 | ifc->address = prefix_new(); | |
408 | ifc->ifp = ifp; | |
409 | listnode_add (ifp->nbr_connected, ifc); | |
410 | } | |
411 | ||
412 | prefix_copy(ifc->address, &p); | |
413 | ||
414 | zebra_interface_nbr_address_add_update (ifp, ifc); | |
415 | } | |
416 | ||
417 | void | |
418 | nbr_connected_delete_ipv6 (struct interface *ifp, struct in6_addr *address, | |
419 | u_char prefixlen) | |
420 | { | |
421 | struct nbr_connected *ifc; | |
422 | struct prefix p; | |
423 | ||
424 | p.family = AF_INET6; | |
425 | IPV6_ADDR_COPY (&p.u.prefix, address); | |
426 | p.prefixlen = prefixlen; | |
427 | ||
428 | ifc = nbr_connected_check(ifp, &p); | |
429 | if (!ifc) | |
430 | return; | |
431 | ||
432 | listnode_delete (ifp->nbr_connected, ifc); | |
433 | ||
434 | zebra_interface_nbr_address_delete_update (ifp, ifc); | |
435 | ||
436 | nbr_connected_free (ifc); | |
437 | } | |
438 | ||
b9df2d25 | 439 | /* |
440 | * The cmd passed to zsend_interface_update may be ZEBRA_INTERFACE_UP or | |
441 | * ZEBRA_INTERFACE_DOWN. | |
442 | * | |
443 | * The ZEBRA_INTERFACE_UP message is sent from the zebra server to | |
444 | * the clients in one of 2 situations: | |
445 | * - an if_up is detected e.g., as a result of an RTM_IFINFO message | |
446 | * - a vty command modifying the bandwidth of an interface is received. | |
447 | * The ZEBRA_INTERFACE_DOWN message is sent when an if_down is detected. | |
448 | */ | |
718e3744 | 449 | int |
b9df2d25 | 450 | zsend_interface_update (int cmd, struct zserv *client, struct interface *ifp) |
718e3744 | 451 | { |
452 | struct stream *s; | |
453 | ||
454 | /* Check this client need interface information. */ | |
455 | if (! client->ifinfo) | |
719e9741 | 456 | return 0; |
718e3744 | 457 | |
458 | s = client->obuf; | |
459 | stream_reset (s); | |
460 | ||
c1b9800a | 461 | zserv_create_header (s, cmd); |
51d4ef83 | 462 | zserv_encode_interface (s, ifp); |
718e3744 | 463 | |
719e9741 | 464 | return zebra_server_send_message(client); |
718e3744 | 465 | } |
466 | ||
b9df2d25 | 467 | /* |
468 | * The zebra server sends the clients a ZEBRA_IPV4_ROUTE_ADD or a | |
469 | * ZEBRA_IPV6_ROUTE_ADD via zsend_route_multipath in the following | |
470 | * situations: | |
471 | * - when the client starts up, and requests default information | |
472 | * by sending a ZEBRA_REDISTRIBUTE_DEFAULT_ADD to the zebra server, in the | |
473 | * - case of rip, ripngd, ospfd and ospf6d, when the client sends a | |
474 | * ZEBRA_REDISTRIBUTE_ADD as a result of the "redistribute" vty cmd, | |
475 | * - when the zebra server redistributes routes after it updates its rib | |
476 | * | |
477 | * The zebra server sends clients a ZEBRA_IPV4_ROUTE_DELETE or a | |
478 | * ZEBRA_IPV6_ROUTE_DELETE via zsend_route_multipath when: | |
479 | * - a "ip route" or "ipv6 route" vty command is issued, a prefix is | |
480 | * - deleted from zebra's rib, and this info | |
481 | * has to be redistributed to the clients | |
482 | * | |
483 | * XXX The ZEBRA_IPV*_ROUTE_ADD message is also sent by the client to the | |
484 | * zebra server when the client wants to tell the zebra server to add a | |
485 | * route to the kernel (zapi_ipv4_add etc. ). Since it's essentially the | |
486 | * same message being sent back and forth, this function and | |
487 | * zapi_ipv{4,6}_{add, delete} should be re-written to avoid code | |
488 | * duplication. | |
489 | */ | |
718e3744 | 490 | int |
b9df2d25 | 491 | zsend_route_multipath (int cmd, struct zserv *client, struct prefix *p, |
492 | struct rib *rib) | |
718e3744 | 493 | { |
494 | int psize; | |
495 | struct stream *s; | |
496 | struct nexthop *nexthop; | |
1dcb5172 | 497 | unsigned long nhnummark = 0, messmark = 0; |
b9df2d25 | 498 | int nhnum = 0; |
1dcb5172 | 499 | u_char zapi_flags = 0; |
b9df2d25 | 500 | |
718e3744 | 501 | s = client->obuf; |
502 | stream_reset (s); | |
c1b9800a | 503 | |
504 | zserv_create_header (s, cmd); | |
505 | ||
506 | /* Put type and nexthop. */ | |
718e3744 | 507 | stream_putc (s, rib->type); |
508 | stream_putc (s, rib->flags); | |
1dcb5172 | 509 | |
510 | /* marker for message flags field */ | |
511 | messmark = stream_get_endp (s); | |
512 | stream_putc (s, 0); | |
718e3744 | 513 | |
514 | /* Prefix. */ | |
515 | psize = PSIZE (p->prefixlen); | |
516 | stream_putc (s, p->prefixlen); | |
b9df2d25 | 517 | stream_write (s, (u_char *) & p->u.prefix, psize); |
518 | ||
519 | /* | |
520 | * XXX The message format sent by zebra below does not match the format | |
521 | * of the corresponding message expected by the zebra server | |
522 | * itself (e.g., see zread_ipv4_add). The nexthop_num is not set correctly, | |
523 | * (is there a bug on the client side if more than one segment is sent?) | |
524 | * nexthop ZEBRA_NEXTHOP_IPV4 is never set, ZEBRA_NEXTHOP_IFINDEX | |
525 | * is hard-coded. | |
526 | */ | |
718e3744 | 527 | /* Nexthop */ |
1dcb5172 | 528 | |
718e3744 | 529 | for (nexthop = rib->nexthop; nexthop; nexthop = nexthop->next) |
530 | { | |
fa713d9e CF |
531 | if (CHECK_FLAG(nexthop->flags, NEXTHOP_FLAG_FIB) |
532 | || nexthop_has_fib_child(nexthop)) | |
b9df2d25 | 533 | { |
1dcb5172 | 534 | SET_FLAG (zapi_flags, ZAPI_MESSAGE_NEXTHOP); |
535 | SET_FLAG (zapi_flags, ZAPI_MESSAGE_IFINDEX); | |
536 | ||
537 | if (nhnummark == 0) | |
538 | { | |
539 | nhnummark = stream_get_endp (s); | |
540 | stream_putc (s, 1); /* placeholder */ | |
541 | } | |
542 | ||
b9df2d25 | 543 | nhnum++; |
544 | ||
545 | switch(nexthop->type) | |
546 | { | |
547 | case NEXTHOP_TYPE_IPV4: | |
548 | case NEXTHOP_TYPE_IPV4_IFINDEX: | |
549 | stream_put_in_addr (s, &nexthop->gate.ipv4); | |
550 | break; | |
718e3744 | 551 | #ifdef HAVE_IPV6 |
b9df2d25 | 552 | case NEXTHOP_TYPE_IPV6: |
553 | case NEXTHOP_TYPE_IPV6_IFINDEX: | |
554 | case NEXTHOP_TYPE_IPV6_IFNAME: | |
555 | stream_write (s, (u_char *) &nexthop->gate.ipv6, 16); | |
556 | break; | |
557 | #endif | |
558 | default: | |
559 | if (cmd == ZEBRA_IPV4_ROUTE_ADD | |
560 | || cmd == ZEBRA_IPV4_ROUTE_DELETE) | |
561 | { | |
562 | struct in_addr empty; | |
44983cf8 | 563 | memset (&empty, 0, sizeof (struct in_addr)); |
b9df2d25 | 564 | stream_write (s, (u_char *) &empty, IPV4_MAX_BYTELEN); |
565 | } | |
566 | else | |
567 | { | |
568 | struct in6_addr empty; | |
569 | memset (&empty, 0, sizeof (struct in6_addr)); | |
570 | stream_write (s, (u_char *) &empty, IPV6_MAX_BYTELEN); | |
571 | } | |
572 | } | |
573 | ||
574 | /* Interface index. */ | |
575 | stream_putc (s, 1); | |
576 | stream_putl (s, nexthop->ifindex); | |
577 | ||
578 | break; | |
579 | } | |
718e3744 | 580 | } |
581 | ||
582 | /* Metric */ | |
cf8a831b | 583 | if (cmd == ZEBRA_IPV4_ROUTE_ADD || cmd == ZEBRA_IPV6_ROUTE_ADD) |
1dcb5172 | 584 | { |
fbf5d033 | 585 | SET_FLAG (zapi_flags, ZAPI_MESSAGE_DISTANCE); |
586 | stream_putc (s, rib->distance); | |
1dcb5172 | 587 | SET_FLAG (zapi_flags, ZAPI_MESSAGE_METRIC); |
588 | stream_putl (s, rib->metric); | |
589 | } | |
590 | ||
591 | /* write real message flags value */ | |
592 | stream_putc_at (s, messmark, zapi_flags); | |
593 | ||
b9df2d25 | 594 | /* Write next-hop number */ |
595 | if (nhnummark) | |
c1eaa442 | 596 | stream_putc_at (s, nhnummark, nhnum); |
b9df2d25 | 597 | |
718e3744 | 598 | /* Write packet size. */ |
599 | stream_putw_at (s, 0, stream_get_endp (s)); | |
600 | ||
719e9741 | 601 | return zebra_server_send_message(client); |
718e3744 | 602 | } |
603 | ||
b9df2d25 | 604 | #ifdef HAVE_IPV6 |
719e9741 | 605 | static int |
718e3744 | 606 | zsend_ipv6_nexthop_lookup (struct zserv *client, struct in6_addr *addr) |
607 | { | |
608 | struct stream *s; | |
609 | struct rib *rib; | |
610 | unsigned long nump; | |
611 | u_char num; | |
612 | struct nexthop *nexthop; | |
613 | ||
614 | /* Lookup nexthop. */ | |
615 | rib = rib_match_ipv6 (addr); | |
616 | ||
617 | /* Get output stream. */ | |
618 | s = client->obuf; | |
619 | stream_reset (s); | |
620 | ||
621 | /* Fill in result. */ | |
c1b9800a | 622 | zserv_create_header (s, ZEBRA_IPV6_NEXTHOP_LOOKUP); |
718e3744 | 623 | stream_put (s, &addr, 16); |
624 | ||
625 | if (rib) | |
626 | { | |
627 | stream_putl (s, rib->metric); | |
628 | num = 0; | |
9985f83c | 629 | nump = stream_get_endp(s); |
718e3744 | 630 | stream_putc (s, 0); |
fa713d9e CF |
631 | /* Only non-recursive routes are elegible to resolve nexthop we |
632 | * are looking up. Therefore, we will just iterate over the top | |
633 | * chain of nexthops. */ | |
718e3744 | 634 | for (nexthop = rib->nexthop; nexthop; nexthop = nexthop->next) |
635 | if (CHECK_FLAG (nexthop->flags, NEXTHOP_FLAG_FIB)) | |
636 | { | |
637 | stream_putc (s, nexthop->type); | |
638 | switch (nexthop->type) | |
639 | { | |
640 | case ZEBRA_NEXTHOP_IPV6: | |
641 | stream_put (s, &nexthop->gate.ipv6, 16); | |
642 | break; | |
643 | case ZEBRA_NEXTHOP_IPV6_IFINDEX: | |
644 | case ZEBRA_NEXTHOP_IPV6_IFNAME: | |
645 | stream_put (s, &nexthop->gate.ipv6, 16); | |
646 | stream_putl (s, nexthop->ifindex); | |
647 | break; | |
648 | case ZEBRA_NEXTHOP_IFINDEX: | |
649 | case ZEBRA_NEXTHOP_IFNAME: | |
650 | stream_putl (s, nexthop->ifindex); | |
651 | break; | |
fa2b17e3 | 652 | default: |
653 | /* do nothing */ | |
654 | break; | |
718e3744 | 655 | } |
656 | num++; | |
657 | } | |
658 | stream_putc_at (s, nump, num); | |
659 | } | |
660 | else | |
661 | { | |
662 | stream_putl (s, 0); | |
663 | stream_putc (s, 0); | |
664 | } | |
665 | ||
666 | stream_putw_at (s, 0, stream_get_endp (s)); | |
667 | ||
719e9741 | 668 | return zebra_server_send_message(client); |
718e3744 | 669 | } |
670 | #endif /* HAVE_IPV6 */ | |
671 | ||
b9df2d25 | 672 | static int |
718e3744 | 673 | zsend_ipv4_nexthop_lookup (struct zserv *client, struct in_addr addr) |
674 | { | |
675 | struct stream *s; | |
676 | struct rib *rib; | |
677 | unsigned long nump; | |
678 | u_char num; | |
679 | struct nexthop *nexthop; | |
680 | ||
681 | /* Lookup nexthop. */ | |
682 | rib = rib_match_ipv4 (addr); | |
683 | ||
684 | /* Get output stream. */ | |
685 | s = client->obuf; | |
686 | stream_reset (s); | |
687 | ||
688 | /* Fill in result. */ | |
c1b9800a | 689 | zserv_create_header (s, ZEBRA_IPV4_NEXTHOP_LOOKUP); |
718e3744 | 690 | stream_put_in_addr (s, &addr); |
691 | ||
692 | if (rib) | |
693 | { | |
bb97e462 CF |
694 | if (IS_ZEBRA_DEBUG_PACKET && IS_ZEBRA_DEBUG_RECV) |
695 | zlog_debug("%s: Matching rib entry found.", __func__); | |
718e3744 | 696 | stream_putl (s, rib->metric); |
697 | num = 0; | |
9985f83c | 698 | nump = stream_get_endp(s); |
718e3744 | 699 | stream_putc (s, 0); |
fa713d9e CF |
700 | /* Only non-recursive routes are elegible to resolve the nexthop we |
701 | * are looking up. Therefore, we will just iterate over the top | |
702 | * chain of nexthops. */ | |
718e3744 | 703 | for (nexthop = rib->nexthop; nexthop; nexthop = nexthop->next) |
704 | if (CHECK_FLAG (nexthop->flags, NEXTHOP_FLAG_FIB)) | |
705 | { | |
706 | stream_putc (s, nexthop->type); | |
707 | switch (nexthop->type) | |
708 | { | |
709 | case ZEBRA_NEXTHOP_IPV4: | |
710 | stream_put_in_addr (s, &nexthop->gate.ipv4); | |
711 | break; | |
bb97e462 CF |
712 | case ZEBRA_NEXTHOP_IPV4_IFINDEX: |
713 | stream_put_in_addr (s, &nexthop->gate.ipv4); | |
714 | stream_putl (s, nexthop->ifindex); | |
715 | break; | |
718e3744 | 716 | case ZEBRA_NEXTHOP_IFINDEX: |
717 | case ZEBRA_NEXTHOP_IFNAME: | |
718 | stream_putl (s, nexthop->ifindex); | |
719 | break; | |
fa2b17e3 | 720 | default: |
721 | /* do nothing */ | |
722 | break; | |
718e3744 | 723 | } |
724 | num++; | |
725 | } | |
726 | stream_putc_at (s, nump, num); | |
727 | } | |
728 | else | |
729 | { | |
bb97e462 CF |
730 | if (IS_ZEBRA_DEBUG_PACKET && IS_ZEBRA_DEBUG_RECV) |
731 | zlog_debug("%s: No matching rib entry found.", __func__); | |
718e3744 | 732 | stream_putl (s, 0); |
733 | stream_putc (s, 0); | |
734 | } | |
735 | ||
736 | stream_putw_at (s, 0, stream_get_endp (s)); | |
737 | ||
719e9741 | 738 | return zebra_server_send_message(client); |
718e3744 | 739 | } |
740 | ||
fb018d25 DS |
741 | /* Nexthop register */ |
742 | static int | |
743 | zserv_nexthop_register (struct zserv *client, int sock, u_short length) | |
744 | { | |
745 | struct rnh *rnh; | |
746 | struct stream *s; | |
747 | struct prefix p; | |
748 | u_short l = 0; | |
749 | ||
750 | if (IS_ZEBRA_DEBUG_NHT) | |
751 | zlog_debug("nexthop_register msg from client %s: length=%d\n", | |
752 | zebra_route_string(client->proto), length); | |
753 | ||
754 | s = client->ibuf; | |
755 | ||
756 | while (l < length) | |
757 | { | |
758 | p.family = stream_getw(s); | |
759 | p.prefixlen = stream_getc(s); | |
760 | l += 3; | |
761 | stream_get(&p.u.prefix, s, PSIZE(p.prefixlen)); | |
762 | l += PSIZE(p.prefixlen); | |
763 | rnh = zebra_add_rnh(&p, 0); | |
764 | zebra_add_rnh_client(rnh, client); | |
765 | } | |
766 | zebra_evaluate_rnh_table(0, AF_INET); | |
767 | zebra_evaluate_rnh_table(0, AF_INET6); | |
768 | return 0; | |
769 | } | |
770 | ||
771 | /* Nexthop register */ | |
772 | static int | |
773 | zserv_nexthop_unregister (struct zserv *client, int sock, u_short length) | |
774 | { | |
775 | struct rnh *rnh; | |
776 | struct stream *s; | |
777 | struct prefix p; | |
778 | u_short l = 0; | |
779 | ||
780 | if (IS_ZEBRA_DEBUG_NHT) | |
781 | zlog_debug("nexthop_unregister msg from client %s: length=%d\n", | |
782 | zebra_route_string(client->proto), length); | |
783 | ||
784 | s = client->ibuf; | |
785 | ||
786 | while (l < length) | |
787 | { | |
788 | p.family = stream_getw(s); | |
789 | p.prefixlen = stream_getc(s); | |
790 | l += 3; | |
791 | stream_get(&p.u.prefix, s, PSIZE(p.prefixlen)); | |
792 | l += PSIZE(p.prefixlen); | |
793 | rnh = zebra_lookup_rnh(&p, 0); | |
794 | if (rnh) | |
795 | zebra_remove_rnh_client(rnh, client); | |
796 | } | |
797 | return 0; | |
798 | } | |
799 | ||
b9df2d25 | 800 | static int |
718e3744 | 801 | zsend_ipv4_import_lookup (struct zserv *client, struct prefix_ipv4 *p) |
802 | { | |
803 | struct stream *s; | |
804 | struct rib *rib; | |
805 | unsigned long nump; | |
806 | u_char num; | |
807 | struct nexthop *nexthop; | |
808 | ||
809 | /* Lookup nexthop. */ | |
810 | rib = rib_lookup_ipv4 (p); | |
811 | ||
812 | /* Get output stream. */ | |
813 | s = client->obuf; | |
814 | stream_reset (s); | |
815 | ||
816 | /* Fill in result. */ | |
c1b9800a | 817 | zserv_create_header (s, ZEBRA_IPV4_IMPORT_LOOKUP); |
718e3744 | 818 | stream_put_in_addr (s, &p->prefix); |
819 | ||
820 | if (rib) | |
821 | { | |
822 | stream_putl (s, rib->metric); | |
823 | num = 0; | |
9985f83c | 824 | nump = stream_get_endp(s); |
718e3744 | 825 | stream_putc (s, 0); |
826 | for (nexthop = rib->nexthop; nexthop; nexthop = nexthop->next) | |
fa713d9e CF |
827 | if (CHECK_FLAG(nexthop->flags, NEXTHOP_FLAG_FIB) |
828 | || nexthop_has_fib_child(nexthop)) | |
718e3744 | 829 | { |
830 | stream_putc (s, nexthop->type); | |
831 | switch (nexthop->type) | |
832 | { | |
833 | case ZEBRA_NEXTHOP_IPV4: | |
834 | stream_put_in_addr (s, &nexthop->gate.ipv4); | |
835 | break; | |
a12afd5e CF |
836 | case ZEBRA_NEXTHOP_IPV4_IFINDEX: |
837 | stream_put_in_addr (s, &nexthop->gate.ipv4); | |
838 | stream_putl (s, nexthop->ifindex); | |
839 | break; | |
718e3744 | 840 | case ZEBRA_NEXTHOP_IFINDEX: |
841 | case ZEBRA_NEXTHOP_IFNAME: | |
842 | stream_putl (s, nexthop->ifindex); | |
843 | break; | |
fa2b17e3 | 844 | default: |
845 | /* do nothing */ | |
846 | break; | |
718e3744 | 847 | } |
848 | num++; | |
849 | } | |
850 | stream_putc_at (s, nump, num); | |
851 | } | |
852 | else | |
853 | { | |
854 | stream_putl (s, 0); | |
855 | stream_putc (s, 0); | |
856 | } | |
857 | ||
858 | stream_putw_at (s, 0, stream_get_endp (s)); | |
859 | ||
719e9741 | 860 | return zebra_server_send_message(client); |
718e3744 | 861 | } |
6b0655a2 | 862 | |
18a6dce6 | 863 | /* Router-id is updated. Send ZEBRA_ROUTER_ID_ADD to client. */ |
864 | int | |
865 | zsend_router_id_update (struct zserv *client, struct prefix *p) | |
866 | { | |
867 | struct stream *s; | |
868 | int blen; | |
869 | ||
870 | /* Check this client need interface information. */ | |
871 | if (!client->ridinfo) | |
719e9741 | 872 | return 0; |
18a6dce6 | 873 | |
874 | s = client->obuf; | |
875 | stream_reset (s); | |
876 | ||
18a6dce6 | 877 | /* Message type. */ |
c1b9800a | 878 | zserv_create_header (s, ZEBRA_ROUTER_ID_UPDATE); |
18a6dce6 | 879 | |
880 | /* Prefix information. */ | |
881 | stream_putc (s, p->family); | |
882 | blen = prefix_blen (p); | |
883 | stream_put (s, &p->u.prefix, blen); | |
884 | stream_putc (s, p->prefixlen); | |
885 | ||
886 | /* Write packet size. */ | |
887 | stream_putw_at (s, 0, stream_get_endp (s)); | |
888 | ||
719e9741 | 889 | return zebra_server_send_message(client); |
18a6dce6 | 890 | } |
6b0655a2 | 891 | |
718e3744 | 892 | /* Register zebra server interface information. Send current all |
893 | interface and address information. */ | |
719e9741 | 894 | static int |
718e3744 | 895 | zread_interface_add (struct zserv *client, u_short length) |
896 | { | |
1eb8ef25 | 897 | struct listnode *ifnode, *ifnnode; |
898 | struct listnode *cnode, *cnnode; | |
718e3744 | 899 | struct interface *ifp; |
900 | struct connected *c; | |
a80beece | 901 | struct nbr_connected *nc; |
718e3744 | 902 | |
903 | /* Interface information is needed. */ | |
904 | client->ifinfo = 1; | |
905 | ||
1eb8ef25 | 906 | for (ALL_LIST_ELEMENTS (iflist, ifnode, ifnnode, ifp)) |
718e3744 | 907 | { |
718e3744 | 908 | /* Skip pseudo interface. */ |
909 | if (! CHECK_FLAG (ifp->status, ZEBRA_INTERFACE_ACTIVE)) | |
910 | continue; | |
911 | ||
719e9741 | 912 | if (zsend_interface_add (client, ifp) < 0) |
913 | return -1; | |
718e3744 | 914 | |
1eb8ef25 | 915 | for (ALL_LIST_ELEMENTS (ifp->connected, cnode, cnnode, c)) |
718e3744 | 916 | { |
719e9741 | 917 | if (CHECK_FLAG (c->conf, ZEBRA_IFC_REAL) && |
918 | (zsend_interface_address (ZEBRA_INTERFACE_ADDRESS_ADD, client, | |
919 | ifp, c) < 0)) | |
920 | return -1; | |
718e3744 | 921 | } |
a80beece DS |
922 | for (ALL_LIST_ELEMENTS (ifp->nbr_connected, cnode, cnnode, nc)) |
923 | { | |
924 | if (zsend_interface_nbr_address (ZEBRA_INTERFACE_NBR_ADDRESS_ADD, client, | |
925 | ifp, nc) < 0) | |
926 | return -1; | |
927 | } | |
928 | ||
718e3744 | 929 | } |
719e9741 | 930 | return 0; |
718e3744 | 931 | } |
932 | ||
933 | /* Unregister zebra server interface information. */ | |
719e9741 | 934 | static int |
718e3744 | 935 | zread_interface_delete (struct zserv *client, u_short length) |
936 | { | |
937 | client->ifinfo = 0; | |
719e9741 | 938 | return 0; |
718e3744 | 939 | } |
940 | ||
941 | /* This function support multiple nexthop. */ | |
b9df2d25 | 942 | /* |
943 | * Parse the ZEBRA_IPV4_ROUTE_ADD sent from client. Update rib and | |
944 | * add kernel route. | |
945 | */ | |
719e9741 | 946 | static int |
718e3744 | 947 | zread_ipv4_add (struct zserv *client, u_short length) |
948 | { | |
949 | int i; | |
950 | struct rib *rib; | |
951 | struct prefix_ipv4 p; | |
952 | u_char message; | |
953 | struct in_addr nexthop; | |
954 | u_char nexthop_num; | |
955 | u_char nexthop_type; | |
956 | struct stream *s; | |
957 | unsigned int ifindex; | |
958 | u_char ifname_len; | |
cddf391b B |
959 | safi_t safi; |
960 | ||
718e3744 | 961 | |
962 | /* Get input stream. */ | |
963 | s = client->ibuf; | |
964 | ||
965 | /* Allocate new rib. */ | |
4d38fdb4 | 966 | rib = XCALLOC (MTYPE_RIB, sizeof (struct rib)); |
967 | ||
718e3744 | 968 | /* Type, flags, message. */ |
969 | rib->type = stream_getc (s); | |
970 | rib->flags = stream_getc (s); | |
b9df2d25 | 971 | message = stream_getc (s); |
cddf391b | 972 | safi = stream_getw (s); |
718e3744 | 973 | rib->uptime = time (NULL); |
974 | ||
975 | /* IPv4 prefix. */ | |
976 | memset (&p, 0, sizeof (struct prefix_ipv4)); | |
977 | p.family = AF_INET; | |
978 | p.prefixlen = stream_getc (s); | |
979 | stream_get (&p.prefix, s, PSIZE (p.prefixlen)); | |
980 | ||
981 | /* Nexthop parse. */ | |
982 | if (CHECK_FLAG (message, ZAPI_MESSAGE_NEXTHOP)) | |
983 | { | |
984 | nexthop_num = stream_getc (s); | |
985 | ||
986 | for (i = 0; i < nexthop_num; i++) | |
987 | { | |
988 | nexthop_type = stream_getc (s); | |
989 | ||
990 | switch (nexthop_type) | |
991 | { | |
992 | case ZEBRA_NEXTHOP_IFINDEX: | |
993 | ifindex = stream_getl (s); | |
994 | nexthop_ifindex_add (rib, ifindex); | |
995 | break; | |
996 | case ZEBRA_NEXTHOP_IFNAME: | |
997 | ifname_len = stream_getc (s); | |
9985f83c | 998 | stream_forward_getp (s, ifname_len); |
718e3744 | 999 | break; |
1000 | case ZEBRA_NEXTHOP_IPV4: | |
1001 | nexthop.s_addr = stream_get_ipv4 (s); | |
7514fb77 | 1002 | nexthop_ipv4_add (rib, &nexthop, NULL); |
718e3744 | 1003 | break; |
c963c203 JT |
1004 | case ZEBRA_NEXTHOP_IPV4_IFINDEX: |
1005 | nexthop.s_addr = stream_get_ipv4 (s); | |
1006 | ifindex = stream_getl (s); | |
1007 | nexthop_ipv4_ifindex_add (rib, &nexthop, NULL, ifindex); | |
1008 | break; | |
718e3744 | 1009 | case ZEBRA_NEXTHOP_IPV6: |
9985f83c | 1010 | stream_forward_getp (s, IPV6_MAX_BYTELEN); |
718e3744 | 1011 | break; |
6902c69a SV |
1012 | case ZEBRA_NEXTHOP_BLACKHOLE: |
1013 | nexthop_blackhole_add (rib); | |
1014 | break; | |
1015 | } | |
718e3744 | 1016 | } |
1017 | } | |
1018 | ||
1019 | /* Distance. */ | |
1020 | if (CHECK_FLAG (message, ZAPI_MESSAGE_DISTANCE)) | |
1021 | rib->distance = stream_getc (s); | |
1022 | ||
1023 | /* Metric. */ | |
1024 | if (CHECK_FLAG (message, ZAPI_MESSAGE_METRIC)) | |
1025 | rib->metric = stream_getl (s); | |
1026 | ||
171eee31 PJ |
1027 | /* Table */ |
1028 | rib->table=zebrad.rtm_table_default; | |
cddf391b | 1029 | rib_add_ipv4_multipath (&p, rib, safi); |
719e9741 | 1030 | return 0; |
718e3744 | 1031 | } |
1032 | ||
1033 | /* Zebra server IPv4 prefix delete function. */ | |
719e9741 | 1034 | static int |
718e3744 | 1035 | zread_ipv4_delete (struct zserv *client, u_short length) |
1036 | { | |
1037 | int i; | |
1038 | struct stream *s; | |
1039 | struct zapi_ipv4 api; | |
6902c69a | 1040 | struct in_addr nexthop, *nexthop_p; |
718e3744 | 1041 | unsigned long ifindex; |
1042 | struct prefix_ipv4 p; | |
1043 | u_char nexthop_num; | |
1044 | u_char nexthop_type; | |
1045 | u_char ifname_len; | |
1046 | ||
1047 | s = client->ibuf; | |
1048 | ifindex = 0; | |
1049 | nexthop.s_addr = 0; | |
6902c69a | 1050 | nexthop_p = NULL; |
718e3744 | 1051 | |
1052 | /* Type, flags, message. */ | |
1053 | api.type = stream_getc (s); | |
1054 | api.flags = stream_getc (s); | |
1055 | api.message = stream_getc (s); | |
cddf391b | 1056 | api.safi = stream_getw (s); |
718e3744 | 1057 | |
1058 | /* IPv4 prefix. */ | |
1059 | memset (&p, 0, sizeof (struct prefix_ipv4)); | |
1060 | p.family = AF_INET; | |
1061 | p.prefixlen = stream_getc (s); | |
1062 | stream_get (&p.prefix, s, PSIZE (p.prefixlen)); | |
1063 | ||
1064 | /* Nexthop, ifindex, distance, metric. */ | |
1065 | if (CHECK_FLAG (api.message, ZAPI_MESSAGE_NEXTHOP)) | |
1066 | { | |
1067 | nexthop_num = stream_getc (s); | |
1068 | ||
1069 | for (i = 0; i < nexthop_num; i++) | |
1070 | { | |
1071 | nexthop_type = stream_getc (s); | |
1072 | ||
1073 | switch (nexthop_type) | |
1074 | { | |
1075 | case ZEBRA_NEXTHOP_IFINDEX: | |
1076 | ifindex = stream_getl (s); | |
1077 | break; | |
1078 | case ZEBRA_NEXTHOP_IFNAME: | |
1079 | ifname_len = stream_getc (s); | |
9985f83c | 1080 | stream_forward_getp (s, ifname_len); |
718e3744 | 1081 | break; |
1082 | case ZEBRA_NEXTHOP_IPV4: | |
1083 | nexthop.s_addr = stream_get_ipv4 (s); | |
6902c69a | 1084 | nexthop_p = &nexthop; |
718e3744 | 1085 | break; |
c963c203 JT |
1086 | case ZEBRA_NEXTHOP_IPV4_IFINDEX: |
1087 | nexthop.s_addr = stream_get_ipv4 (s); | |
23f5f7c3 | 1088 | nexthop_p = &nexthop; |
c963c203 JT |
1089 | ifindex = stream_getl (s); |
1090 | break; | |
718e3744 | 1091 | case ZEBRA_NEXTHOP_IPV6: |
9985f83c | 1092 | stream_forward_getp (s, IPV6_MAX_BYTELEN); |
718e3744 | 1093 | break; |
1094 | } | |
1095 | } | |
1096 | } | |
1097 | ||
1098 | /* Distance. */ | |
1099 | if (CHECK_FLAG (api.message, ZAPI_MESSAGE_DISTANCE)) | |
1100 | api.distance = stream_getc (s); | |
1101 | else | |
1102 | api.distance = 0; | |
1103 | ||
1104 | /* Metric. */ | |
1105 | if (CHECK_FLAG (api.message, ZAPI_MESSAGE_METRIC)) | |
1106 | api.metric = stream_getl (s); | |
1107 | else | |
1108 | api.metric = 0; | |
1109 | ||
6902c69a | 1110 | rib_delete_ipv4 (api.type, api.flags, &p, nexthop_p, ifindex, |
cddf391b | 1111 | client->rtm_table, api.safi); |
719e9741 | 1112 | return 0; |
718e3744 | 1113 | } |
1114 | ||
1115 | /* Nexthop lookup for IPv4. */ | |
719e9741 | 1116 | static int |
718e3744 | 1117 | zread_ipv4_nexthop_lookup (struct zserv *client, u_short length) |
1118 | { | |
1119 | struct in_addr addr; | |
bb97e462 | 1120 | char buf[BUFSIZ]; |
718e3744 | 1121 | |
1122 | addr.s_addr = stream_get_ipv4 (client->ibuf); | |
bb97e462 CF |
1123 | if (IS_ZEBRA_DEBUG_PACKET && IS_ZEBRA_DEBUG_RECV) |
1124 | zlog_debug("%s: looking up %s", __func__, | |
1125 | inet_ntop (AF_INET, &addr, buf, BUFSIZ)); | |
719e9741 | 1126 | return zsend_ipv4_nexthop_lookup (client, addr); |
718e3744 | 1127 | } |
1128 | ||
1129 | /* Nexthop lookup for IPv4. */ | |
719e9741 | 1130 | static int |
718e3744 | 1131 | zread_ipv4_import_lookup (struct zserv *client, u_short length) |
1132 | { | |
1133 | struct prefix_ipv4 p; | |
1134 | ||
1135 | p.family = AF_INET; | |
1136 | p.prefixlen = stream_getc (client->ibuf); | |
1137 | p.prefix.s_addr = stream_get_ipv4 (client->ibuf); | |
1138 | ||
719e9741 | 1139 | return zsend_ipv4_import_lookup (client, &p); |
718e3744 | 1140 | } |
1141 | ||
1142 | #ifdef HAVE_IPV6 | |
1143 | /* Zebra server IPv6 prefix add function. */ | |
719e9741 | 1144 | static int |
718e3744 | 1145 | zread_ipv6_add (struct zserv *client, u_short length) |
1146 | { | |
1147 | int i; | |
1148 | struct stream *s; | |
718e3744 | 1149 | struct in6_addr nexthop; |
41fc2714 DS |
1150 | struct rib *rib; |
1151 | u_char message; | |
1152 | u_char nexthop_num; | |
1153 | u_char nexthop_type; | |
718e3744 | 1154 | unsigned long ifindex; |
1155 | struct prefix_ipv6 p; | |
41fc2714 DS |
1156 | u_char ifname_len; |
1157 | safi_t safi; | |
1158 | static struct in6_addr nexthops[MULTIPATH_NUM]; | |
1159 | static unsigned int ifindices[MULTIPATH_NUM]; | |
1160 | ||
1161 | /* Get input stream. */ | |
718e3744 | 1162 | s = client->ibuf; |
41fc2714 | 1163 | |
718e3744 | 1164 | ifindex = 0; |
1165 | memset (&nexthop, 0, sizeof (struct in6_addr)); | |
1166 | ||
41fc2714 DS |
1167 | /* Allocate new rib. */ |
1168 | rib = XCALLOC (MTYPE_RIB, sizeof (struct rib)); | |
1169 | ||
718e3744 | 1170 | /* Type, flags, message. */ |
41fc2714 DS |
1171 | rib->type = stream_getc (s); |
1172 | rib->flags = stream_getc (s); | |
1173 | message = stream_getc (s); | |
1174 | safi = stream_getw (s); | |
1175 | rib->uptime = time (NULL); | |
718e3744 | 1176 | |
41fc2714 | 1177 | /* IPv6 prefix. */ |
718e3744 | 1178 | memset (&p, 0, sizeof (struct prefix_ipv6)); |
1179 | p.family = AF_INET6; | |
1180 | p.prefixlen = stream_getc (s); | |
1181 | stream_get (&p.prefix, s, PSIZE (p.prefixlen)); | |
1182 | ||
41fc2714 DS |
1183 | /* We need to give nh-addr, nh-ifindex with the same next-hop object |
1184 | * to the rib to ensure that IPv6 multipathing works; need to coalesce | |
1185 | * these. Clients should send the same number of paired set of | |
1186 | * next-hop-addr/next-hop-ifindices. */ | |
1187 | if (CHECK_FLAG (message, ZAPI_MESSAGE_NEXTHOP)) | |
718e3744 | 1188 | { |
41fc2714 DS |
1189 | int nh_count = 0; |
1190 | int if_count = 0; | |
1191 | int max_nh_if = 0; | |
718e3744 | 1192 | |
41fc2714 DS |
1193 | nexthop_num = stream_getc (s); |
1194 | for (i = 0; i < nexthop_num; i++) | |
718e3744 | 1195 | { |
1196 | nexthop_type = stream_getc (s); | |
1197 | ||
1198 | switch (nexthop_type) | |
1199 | { | |
1200 | case ZEBRA_NEXTHOP_IPV6: | |
1201 | stream_get (&nexthop, s, 16); | |
41fc2714 DS |
1202 | if (nh_count < MULTIPATH_NUM) { |
1203 | nexthops[nh_count++] = nexthop; | |
1204 | } | |
718e3744 | 1205 | break; |
1206 | case ZEBRA_NEXTHOP_IFINDEX: | |
41fc2714 DS |
1207 | if (if_count < MULTIPATH_NUM) { |
1208 | ifindices[if_count++] = stream_getl (s); | |
1209 | } | |
718e3744 | 1210 | break; |
1211 | } | |
1212 | } | |
41fc2714 DS |
1213 | |
1214 | max_nh_if = (nh_count > if_count) ? nh_count : if_count; | |
1215 | for (i = 0; i < max_nh_if; i++) | |
1216 | { | |
1217 | if ((i < nh_count) && !IN6_IS_ADDR_UNSPECIFIED (&nexthops[i])) { | |
1218 | if ((i < if_count) && ifindices[i]) { | |
1219 | if (rib_bogus_ipv6 (rib->type, &p, &nexthops[i], ifindices[i], 0)) { | |
1220 | continue; | |
1221 | } | |
1222 | nexthop_ipv6_ifindex_add (rib, &nexthops[i], ifindices[i]); | |
1223 | } | |
1224 | else { | |
1225 | if (rib_bogus_ipv6 (rib->type, &p, &nexthops[i], 0, 0)) { | |
1226 | continue; | |
1227 | } | |
1228 | nexthop_ipv6_add (rib, &nexthops[i]); | |
1229 | } | |
1230 | } | |
1231 | else { | |
1232 | if ((i < if_count) && ifindices[i]) { | |
1233 | if (rib_bogus_ipv6 (rib->type, &p, NULL, ifindices[i], 0)) { | |
1234 | continue; | |
1235 | } | |
1236 | nexthop_ifindex_add (rib, ifindices[i]); | |
1237 | } | |
1238 | } | |
1239 | } | |
718e3744 | 1240 | } |
1241 | ||
41fc2714 DS |
1242 | /* Distance. */ |
1243 | if (CHECK_FLAG (message, ZAPI_MESSAGE_DISTANCE)) | |
1244 | rib->distance = stream_getc (s); | |
718e3744 | 1245 | |
41fc2714 DS |
1246 | /* Metric. */ |
1247 | if (CHECK_FLAG (message, ZAPI_MESSAGE_METRIC)) | |
1248 | rib->metric = stream_getl (s); | |
718e3744 | 1249 | |
41fc2714 DS |
1250 | /* Table */ |
1251 | rib->table=zebrad.rtm_table_default; | |
1252 | rib_add_ipv6_multipath (&p, rib, safi, ifindex); | |
719e9741 | 1253 | return 0; |
718e3744 | 1254 | } |
1255 | ||
1256 | /* Zebra server IPv6 prefix delete function. */ | |
719e9741 | 1257 | static int |
718e3744 | 1258 | zread_ipv6_delete (struct zserv *client, u_short length) |
1259 | { | |
1260 | int i; | |
1261 | struct stream *s; | |
1262 | struct zapi_ipv6 api; | |
1263 | struct in6_addr nexthop; | |
1264 | unsigned long ifindex; | |
1265 | struct prefix_ipv6 p; | |
1266 | ||
1267 | s = client->ibuf; | |
1268 | ifindex = 0; | |
1269 | memset (&nexthop, 0, sizeof (struct in6_addr)); | |
1270 | ||
1271 | /* Type, flags, message. */ | |
1272 | api.type = stream_getc (s); | |
1273 | api.flags = stream_getc (s); | |
1274 | api.message = stream_getc (s); | |
f768f367 | 1275 | api.safi = stream_getw (s); |
718e3744 | 1276 | |
1277 | /* IPv4 prefix. */ | |
1278 | memset (&p, 0, sizeof (struct prefix_ipv6)); | |
1279 | p.family = AF_INET6; | |
1280 | p.prefixlen = stream_getc (s); | |
1281 | stream_get (&p.prefix, s, PSIZE (p.prefixlen)); | |
1282 | ||
1283 | /* Nexthop, ifindex, distance, metric. */ | |
1284 | if (CHECK_FLAG (api.message, ZAPI_MESSAGE_NEXTHOP)) | |
1285 | { | |
1286 | u_char nexthop_type; | |
1287 | ||
1288 | api.nexthop_num = stream_getc (s); | |
1289 | for (i = 0; i < api.nexthop_num; i++) | |
1290 | { | |
1291 | nexthop_type = stream_getc (s); | |
1292 | ||
1293 | switch (nexthop_type) | |
1294 | { | |
1295 | case ZEBRA_NEXTHOP_IPV6: | |
1296 | stream_get (&nexthop, s, 16); | |
1297 | break; | |
1298 | case ZEBRA_NEXTHOP_IFINDEX: | |
1299 | ifindex = stream_getl (s); | |
1300 | break; | |
1301 | } | |
1302 | } | |
1303 | } | |
1304 | ||
1305 | if (CHECK_FLAG (api.message, ZAPI_MESSAGE_DISTANCE)) | |
1306 | api.distance = stream_getc (s); | |
1307 | else | |
1308 | api.distance = 0; | |
1309 | if (CHECK_FLAG (api.message, ZAPI_MESSAGE_METRIC)) | |
1310 | api.metric = stream_getl (s); | |
1311 | else | |
1312 | api.metric = 0; | |
1313 | ||
1314 | if (IN6_IS_ADDR_UNSPECIFIED (&nexthop)) | |
f768f367 | 1315 | rib_delete_ipv6 (api.type, api.flags, &p, NULL, ifindex, client->rtm_table, api.safi); |
718e3744 | 1316 | else |
f768f367 | 1317 | rib_delete_ipv6 (api.type, api.flags, &p, &nexthop, ifindex, client->rtm_table, api.safi); |
719e9741 | 1318 | return 0; |
718e3744 | 1319 | } |
1320 | ||
719e9741 | 1321 | static int |
718e3744 | 1322 | zread_ipv6_nexthop_lookup (struct zserv *client, u_short length) |
1323 | { | |
1324 | struct in6_addr addr; | |
1325 | char buf[BUFSIZ]; | |
1326 | ||
1327 | stream_get (&addr, client->ibuf, 16); | |
a5207089 CF |
1328 | if (IS_ZEBRA_DEBUG_PACKET && IS_ZEBRA_DEBUG_RECV) |
1329 | zlog_debug("%s: looking up %s", __func__, | |
1330 | inet_ntop (AF_INET6, &addr, buf, BUFSIZ)); | |
718e3744 | 1331 | |
719e9741 | 1332 | return zsend_ipv6_nexthop_lookup (client, &addr); |
718e3744 | 1333 | } |
1334 | #endif /* HAVE_IPV6 */ | |
1335 | ||
18a6dce6 | 1336 | /* Register zebra server router-id information. Send current router-id */ |
719e9741 | 1337 | static int |
18a6dce6 | 1338 | zread_router_id_add (struct zserv *client, u_short length) |
1339 | { | |
1340 | struct prefix p; | |
1341 | ||
1342 | /* Router-id information is needed. */ | |
1343 | client->ridinfo = 1; | |
1344 | ||
1345 | router_id_get (&p); | |
1346 | ||
719e9741 | 1347 | return zsend_router_id_update (client,&p); |
18a6dce6 | 1348 | } |
1349 | ||
1350 | /* Unregister zebra server router-id information. */ | |
719e9741 | 1351 | static int |
18a6dce6 | 1352 | zread_router_id_delete (struct zserv *client, u_short length) |
1353 | { | |
1354 | client->ridinfo = 0; | |
719e9741 | 1355 | return 0; |
18a6dce6 | 1356 | } |
1357 | ||
2ea1ab1c VT |
1358 | /* Tie up route-type and client->sock */ |
1359 | static void | |
1360 | zread_hello (struct zserv *client) | |
1361 | { | |
1362 | /* type of protocol (lib/zebra.h) */ | |
1363 | u_char proto; | |
1364 | proto = stream_getc (client->ibuf); | |
1365 | ||
1366 | /* accept only dynamic routing protocols */ | |
1367 | if ((proto < ZEBRA_ROUTE_MAX) | |
1368 | && (proto > ZEBRA_ROUTE_STATIC)) | |
1369 | { | |
1370 | zlog_notice ("client %d says hello and bids fair to announce only %s routes", | |
1371 | client->sock, zebra_route_string(proto)); | |
1372 | ||
1373 | /* if route-type was binded by other client */ | |
1374 | if (route_type_oaths[proto]) | |
1375 | zlog_warn ("sender of %s routes changed %c->%c", | |
1376 | zebra_route_string(proto), route_type_oaths[proto], | |
1377 | client->sock); | |
1378 | ||
1379 | route_type_oaths[proto] = client->sock; | |
fb018d25 | 1380 | client->proto = proto; |
2ea1ab1c VT |
1381 | } |
1382 | } | |
1383 | ||
1384 | /* If client sent routes of specific type, zebra removes it | |
1385 | * and returns number of deleted routes. | |
1386 | */ | |
1387 | static void | |
1388 | zebra_score_rib (int client_sock) | |
1389 | { | |
1390 | int i; | |
1391 | ||
1392 | for (i = ZEBRA_ROUTE_RIP; i < ZEBRA_ROUTE_MAX; i++) | |
1393 | if (client_sock == route_type_oaths[i]) | |
1394 | { | |
1395 | zlog_notice ("client %d disconnected. %lu %s routes removed from the rib", | |
1396 | client_sock, rib_score_proto (i), zebra_route_string (i)); | |
1397 | route_type_oaths[i] = 0; | |
1398 | break; | |
1399 | } | |
1400 | } | |
1401 | ||
718e3744 | 1402 | /* Close zebra client. */ |
b9df2d25 | 1403 | static void |
718e3744 | 1404 | zebra_client_close (struct zserv *client) |
1405 | { | |
fb018d25 DS |
1406 | zebra_cleanup_rnh_client(0, AF_INET, client); |
1407 | zebra_cleanup_rnh_client(0, AF_INET6, client); | |
1408 | ||
718e3744 | 1409 | /* Close file descriptor. */ |
1410 | if (client->sock) | |
1411 | { | |
1412 | close (client->sock); | |
2ea1ab1c | 1413 | zebra_score_rib (client->sock); |
718e3744 | 1414 | client->sock = -1; |
1415 | } | |
1416 | ||
1417 | /* Free stream buffers. */ | |
1418 | if (client->ibuf) | |
1419 | stream_free (client->ibuf); | |
1420 | if (client->obuf) | |
1421 | stream_free (client->obuf); | |
719e9741 | 1422 | if (client->wb) |
1423 | buffer_free(client->wb); | |
718e3744 | 1424 | |
1425 | /* Release threads. */ | |
1426 | if (client->t_read) | |
1427 | thread_cancel (client->t_read); | |
1428 | if (client->t_write) | |
1429 | thread_cancel (client->t_write); | |
719e9741 | 1430 | if (client->t_suicide) |
1431 | thread_cancel (client->t_suicide); | |
718e3744 | 1432 | |
1433 | /* Free client structure. */ | |
b21b19c5 | 1434 | listnode_delete (zebrad.client_list, client); |
718e3744 | 1435 | XFREE (0, client); |
1436 | } | |
1437 | ||
1438 | /* Make new client. */ | |
b9df2d25 | 1439 | static void |
718e3744 | 1440 | zebra_client_create (int sock) |
1441 | { | |
1442 | struct zserv *client; | |
1443 | ||
1444 | client = XCALLOC (0, sizeof (struct zserv)); | |
1445 | ||
1446 | /* Make client input/output buffer. */ | |
1447 | client->sock = sock; | |
1448 | client->ibuf = stream_new (ZEBRA_MAX_PACKET_SIZ); | |
1449 | client->obuf = stream_new (ZEBRA_MAX_PACKET_SIZ); | |
719e9741 | 1450 | client->wb = buffer_new(0); |
718e3744 | 1451 | |
1452 | /* Set table number. */ | |
b21b19c5 | 1453 | client->rtm_table = zebrad.rtm_table_default; |
718e3744 | 1454 | |
1455 | /* Add this client to linked list. */ | |
b21b19c5 | 1456 | listnode_add (zebrad.client_list, client); |
718e3744 | 1457 | |
1458 | /* Make new read thread. */ | |
1459 | zebra_event (ZEBRA_READ, sock, client); | |
1460 | } | |
1461 | ||
1462 | /* Handler of zebra service request. */ | |
b9df2d25 | 1463 | static int |
718e3744 | 1464 | zebra_client_read (struct thread *thread) |
1465 | { | |
1466 | int sock; | |
1467 | struct zserv *client; | |
57a1477b | 1468 | size_t already; |
c1b9800a | 1469 | uint16_t length, command; |
1470 | uint8_t marker, version; | |
718e3744 | 1471 | |
1472 | /* Get thread data. Reset reading thread because I'm running. */ | |
1473 | sock = THREAD_FD (thread); | |
1474 | client = THREAD_ARG (thread); | |
1475 | client->t_read = NULL; | |
1476 | ||
719e9741 | 1477 | if (client->t_suicide) |
718e3744 | 1478 | { |
719e9741 | 1479 | zebra_client_close(client); |
718e3744 | 1480 | return -1; |
1481 | } | |
719e9741 | 1482 | |
1483 | /* Read length and command (if we don't have it already). */ | |
57a1477b | 1484 | if ((already = stream_get_endp(client->ibuf)) < ZEBRA_HEADER_SIZE) |
719e9741 | 1485 | { |
57a1477b | 1486 | ssize_t nbyte; |
719e9741 | 1487 | if (((nbyte = stream_read_try (client->ibuf, sock, |
57a1477b | 1488 | ZEBRA_HEADER_SIZE-already)) == 0) || |
719e9741 | 1489 | (nbyte == -1)) |
1490 | { | |
1491 | if (IS_ZEBRA_DEBUG_EVENT) | |
1492 | zlog_debug ("connection closed socket [%d]", sock); | |
1493 | zebra_client_close (client); | |
1494 | return -1; | |
1495 | } | |
57a1477b | 1496 | if (nbyte != (ssize_t)(ZEBRA_HEADER_SIZE-already)) |
719e9741 | 1497 | { |
1498 | /* Try again later. */ | |
1499 | zebra_event (ZEBRA_READ, sock, client); | |
1500 | return 0; | |
1501 | } | |
57a1477b | 1502 | already = ZEBRA_HEADER_SIZE; |
719e9741 | 1503 | } |
1504 | ||
1505 | /* Reset to read from the beginning of the incoming packet. */ | |
1506 | stream_set_getp(client->ibuf, 0); | |
1507 | ||
c1b9800a | 1508 | /* Fetch header values */ |
718e3744 | 1509 | length = stream_getw (client->ibuf); |
c1b9800a | 1510 | marker = stream_getc (client->ibuf); |
1511 | version = stream_getc (client->ibuf); | |
1512 | command = stream_getw (client->ibuf); | |
718e3744 | 1513 | |
c1b9800a | 1514 | if (marker != ZEBRA_HEADER_MARKER || version != ZSERV_VERSION) |
1515 | { | |
1516 | zlog_err("%s: socket %d version mismatch, marker %d, version %d", | |
1517 | __func__, sock, marker, version); | |
1518 | zebra_client_close (client); | |
1519 | return -1; | |
1520 | } | |
719e9741 | 1521 | if (length < ZEBRA_HEADER_SIZE) |
718e3744 | 1522 | { |
57a1477b | 1523 | zlog_warn("%s: socket %d message length %u is less than header size %d", |
1524 | __func__, sock, length, ZEBRA_HEADER_SIZE); | |
1525 | zebra_client_close (client); | |
1526 | return -1; | |
1527 | } | |
1528 | if (length > STREAM_SIZE(client->ibuf)) | |
1529 | { | |
1530 | zlog_warn("%s: socket %d message length %u exceeds buffer size %lu", | |
1531 | __func__, sock, length, (u_long)STREAM_SIZE(client->ibuf)); | |
718e3744 | 1532 | zebra_client_close (client); |
1533 | return -1; | |
1534 | } | |
1535 | ||
718e3744 | 1536 | /* Read rest of data. */ |
57a1477b | 1537 | if (already < length) |
718e3744 | 1538 | { |
57a1477b | 1539 | ssize_t nbyte; |
1540 | if (((nbyte = stream_read_try (client->ibuf, sock, | |
1541 | length-already)) == 0) || | |
1542 | (nbyte == -1)) | |
718e3744 | 1543 | { |
1544 | if (IS_ZEBRA_DEBUG_EVENT) | |
b6178002 | 1545 | zlog_debug ("connection closed [%d] when reading zebra data", sock); |
718e3744 | 1546 | zebra_client_close (client); |
1547 | return -1; | |
1548 | } | |
57a1477b | 1549 | if (nbyte != (ssize_t)(length-already)) |
719e9741 | 1550 | { |
1551 | /* Try again later. */ | |
1552 | zebra_event (ZEBRA_READ, sock, client); | |
1553 | return 0; | |
1554 | } | |
718e3744 | 1555 | } |
1556 | ||
719e9741 | 1557 | length -= ZEBRA_HEADER_SIZE; |
1558 | ||
718e3744 | 1559 | /* Debug packet information. */ |
1560 | if (IS_ZEBRA_DEBUG_EVENT) | |
b6178002 | 1561 | zlog_debug ("zebra message comes from socket [%d]", sock); |
718e3744 | 1562 | |
1563 | if (IS_ZEBRA_DEBUG_PACKET && IS_ZEBRA_DEBUG_RECV) | |
b6178002 | 1564 | zlog_debug ("zebra message received [%s] %d", |
66859780 | 1565 | zserv_command_string (command), length); |
718e3744 | 1566 | |
1567 | switch (command) | |
1568 | { | |
18a6dce6 | 1569 | case ZEBRA_ROUTER_ID_ADD: |
1570 | zread_router_id_add (client, length); | |
1571 | break; | |
1572 | case ZEBRA_ROUTER_ID_DELETE: | |
1573 | zread_router_id_delete (client, length); | |
1574 | break; | |
718e3744 | 1575 | case ZEBRA_INTERFACE_ADD: |
1576 | zread_interface_add (client, length); | |
1577 | break; | |
1578 | case ZEBRA_INTERFACE_DELETE: | |
1579 | zread_interface_delete (client, length); | |
1580 | break; | |
1581 | case ZEBRA_IPV4_ROUTE_ADD: | |
1582 | zread_ipv4_add (client, length); | |
1583 | break; | |
1584 | case ZEBRA_IPV4_ROUTE_DELETE: | |
1585 | zread_ipv4_delete (client, length); | |
1586 | break; | |
1587 | #ifdef HAVE_IPV6 | |
1588 | case ZEBRA_IPV6_ROUTE_ADD: | |
1589 | zread_ipv6_add (client, length); | |
1590 | break; | |
1591 | case ZEBRA_IPV6_ROUTE_DELETE: | |
1592 | zread_ipv6_delete (client, length); | |
1593 | break; | |
1594 | #endif /* HAVE_IPV6 */ | |
1595 | case ZEBRA_REDISTRIBUTE_ADD: | |
1596 | zebra_redistribute_add (command, client, length); | |
1597 | break; | |
1598 | case ZEBRA_REDISTRIBUTE_DELETE: | |
1599 | zebra_redistribute_delete (command, client, length); | |
1600 | break; | |
1601 | case ZEBRA_REDISTRIBUTE_DEFAULT_ADD: | |
1602 | zebra_redistribute_default_add (command, client, length); | |
1603 | break; | |
1604 | case ZEBRA_REDISTRIBUTE_DEFAULT_DELETE: | |
1605 | zebra_redistribute_default_delete (command, client, length); | |
1606 | break; | |
1607 | case ZEBRA_IPV4_NEXTHOP_LOOKUP: | |
1608 | zread_ipv4_nexthop_lookup (client, length); | |
1609 | break; | |
1610 | #ifdef HAVE_IPV6 | |
1611 | case ZEBRA_IPV6_NEXTHOP_LOOKUP: | |
1612 | zread_ipv6_nexthop_lookup (client, length); | |
1613 | break; | |
1614 | #endif /* HAVE_IPV6 */ | |
1615 | case ZEBRA_IPV4_IMPORT_LOOKUP: | |
1616 | zread_ipv4_import_lookup (client, length); | |
1617 | break; | |
2ea1ab1c VT |
1618 | case ZEBRA_HELLO: |
1619 | zread_hello (client); | |
1620 | break; | |
fb018d25 DS |
1621 | case ZEBRA_NEXTHOP_REGISTER: |
1622 | zserv_nexthop_register(client, sock, length); | |
1623 | break; | |
1624 | case ZEBRA_NEXTHOP_UNREGISTER: | |
1625 | zserv_nexthop_unregister(client, sock, length); | |
1626 | break; | |
718e3744 | 1627 | default: |
1628 | zlog_info ("Zebra received unknown command %d", command); | |
1629 | break; | |
1630 | } | |
1631 | ||
719e9741 | 1632 | if (client->t_suicide) |
1633 | { | |
1634 | /* No need to wait for thread callback, just kill immediately. */ | |
1635 | zebra_client_close(client); | |
1636 | return -1; | |
1637 | } | |
1638 | ||
718e3744 | 1639 | stream_reset (client->ibuf); |
1640 | zebra_event (ZEBRA_READ, sock, client); | |
718e3744 | 1641 | return 0; |
1642 | } | |
1643 | ||
718e3744 | 1644 | |
1645 | /* Accept code of zebra server socket. */ | |
b9df2d25 | 1646 | static int |
718e3744 | 1647 | zebra_accept (struct thread *thread) |
1648 | { | |
1649 | int accept_sock; | |
1650 | int client_sock; | |
1651 | struct sockaddr_in client; | |
1652 | socklen_t len; | |
1653 | ||
1654 | accept_sock = THREAD_FD (thread); | |
1655 | ||
719e9741 | 1656 | /* Reregister myself. */ |
1657 | zebra_event (ZEBRA_SERV, accept_sock, NULL); | |
1658 | ||
718e3744 | 1659 | len = sizeof (struct sockaddr_in); |
1660 | client_sock = accept (accept_sock, (struct sockaddr *) &client, &len); | |
1661 | ||
1662 | if (client_sock < 0) | |
1663 | { | |
6099b3b5 | 1664 | zlog_warn ("Can't accept zebra socket: %s", safe_strerror (errno)); |
718e3744 | 1665 | return -1; |
1666 | } | |
1667 | ||
ccf3557b | 1668 | /* Make client socket non-blocking. */ |
719e9741 | 1669 | set_nonblocking(client_sock); |
865b852c | 1670 | |
718e3744 | 1671 | /* Create new zebra client. */ |
1672 | zebra_client_create (client_sock); | |
1673 | ||
718e3744 | 1674 | return 0; |
1675 | } | |
1676 | ||
b9df2d25 | 1677 | #ifdef HAVE_TCP_ZEBRA |
718e3744 | 1678 | /* Make zebra's server socket. */ |
b9df2d25 | 1679 | static void |
718e3744 | 1680 | zebra_serv () |
1681 | { | |
1682 | int ret; | |
1683 | int accept_sock; | |
1684 | struct sockaddr_in addr; | |
1685 | ||
1686 | accept_sock = socket (AF_INET, SOCK_STREAM, 0); | |
1687 | ||
1688 | if (accept_sock < 0) | |
1689 | { | |
3d1dc857 | 1690 | zlog_warn ("Can't create zserv stream socket: %s", |
1691 | safe_strerror (errno)); | |
718e3744 | 1692 | zlog_warn ("zebra can't provice full functionality due to above error"); |
1693 | return; | |
1694 | } | |
1695 | ||
2ea1ab1c | 1696 | memset (&route_type_oaths, 0, sizeof (route_type_oaths)); |
718e3744 | 1697 | memset (&addr, 0, sizeof (struct sockaddr_in)); |
1698 | addr.sin_family = AF_INET; | |
1699 | addr.sin_port = htons (ZEBRA_PORT); | |
6f0e3f6e | 1700 | #ifdef HAVE_STRUCT_SOCKADDR_IN_SIN_LEN |
718e3744 | 1701 | addr.sin_len = sizeof (struct sockaddr_in); |
6f0e3f6e | 1702 | #endif /* HAVE_STRUCT_SOCKADDR_IN_SIN_LEN */ |
718e3744 | 1703 | addr.sin_addr.s_addr = htonl (INADDR_LOOPBACK); |
1704 | ||
1705 | sockopt_reuseaddr (accept_sock); | |
1706 | sockopt_reuseport (accept_sock); | |
1707 | ||
edd7c245 | 1708 | if ( zserv_privs.change(ZPRIVS_RAISE) ) |
1709 | zlog (NULL, LOG_ERR, "Can't raise privileges"); | |
1710 | ||
718e3744 | 1711 | ret = bind (accept_sock, (struct sockaddr *)&addr, |
1712 | sizeof (struct sockaddr_in)); | |
1713 | if (ret < 0) | |
1714 | { | |
3d1dc857 | 1715 | zlog_warn ("Can't bind to stream socket: %s", |
1716 | safe_strerror (errno)); | |
718e3744 | 1717 | zlog_warn ("zebra can't provice full functionality due to above error"); |
1718 | close (accept_sock); /* Avoid sd leak. */ | |
1719 | return; | |
1720 | } | |
edd7c245 | 1721 | |
1722 | if ( zserv_privs.change(ZPRIVS_LOWER) ) | |
1723 | zlog (NULL, LOG_ERR, "Can't lower privileges"); | |
718e3744 | 1724 | |
1725 | ret = listen (accept_sock, 1); | |
1726 | if (ret < 0) | |
1727 | { | |
3d1dc857 | 1728 | zlog_warn ("Can't listen to stream socket: %s", |
1729 | safe_strerror (errno)); | |
718e3744 | 1730 | zlog_warn ("zebra can't provice full functionality due to above error"); |
1731 | close (accept_sock); /* Avoid sd leak. */ | |
1732 | return; | |
1733 | } | |
1734 | ||
1735 | zebra_event (ZEBRA_SERV, accept_sock, NULL); | |
1736 | } | |
b9df2d25 | 1737 | #endif /* HAVE_TCP_ZEBRA */ |
718e3744 | 1738 | |
1739 | /* For sockaddr_un. */ | |
1740 | #include <sys/un.h> | |
1741 | ||
1742 | /* zebra server UNIX domain socket. */ | |
b9df2d25 | 1743 | static void |
fce954f8 | 1744 | zebra_serv_un (const char *path) |
718e3744 | 1745 | { |
1746 | int ret; | |
1747 | int sock, len; | |
1748 | struct sockaddr_un serv; | |
1749 | mode_t old_mask; | |
1750 | ||
1751 | /* First of all, unlink existing socket */ | |
1752 | unlink (path); | |
1753 | ||
1754 | /* Set umask */ | |
1755 | old_mask = umask (0077); | |
1756 | ||
1757 | /* Make UNIX domain socket. */ | |
1758 | sock = socket (AF_UNIX, SOCK_STREAM, 0); | |
1759 | if (sock < 0) | |
1760 | { | |
3d1dc857 | 1761 | zlog_warn ("Can't create zserv unix socket: %s", |
1762 | safe_strerror (errno)); | |
1763 | zlog_warn ("zebra can't provide full functionality due to above error"); | |
718e3744 | 1764 | return; |
1765 | } | |
1766 | ||
2ea1ab1c VT |
1767 | memset (&route_type_oaths, 0, sizeof (route_type_oaths)); |
1768 | ||
718e3744 | 1769 | /* Make server socket. */ |
1770 | memset (&serv, 0, sizeof (struct sockaddr_un)); | |
1771 | serv.sun_family = AF_UNIX; | |
1772 | strncpy (serv.sun_path, path, strlen (path)); | |
6f0e3f6e | 1773 | #ifdef HAVE_STRUCT_SOCKADDR_UN_SUN_LEN |
718e3744 | 1774 | len = serv.sun_len = SUN_LEN(&serv); |
1775 | #else | |
1776 | len = sizeof (serv.sun_family) + strlen (serv.sun_path); | |
6f0e3f6e | 1777 | #endif /* HAVE_STRUCT_SOCKADDR_UN_SUN_LEN */ |
718e3744 | 1778 | |
1779 | ret = bind (sock, (struct sockaddr *) &serv, len); | |
1780 | if (ret < 0) | |
1781 | { | |
3d1dc857 | 1782 | zlog_warn ("Can't bind to unix socket %s: %s", |
1783 | path, safe_strerror (errno)); | |
1784 | zlog_warn ("zebra can't provide full functionality due to above error"); | |
718e3744 | 1785 | close (sock); |
1786 | return; | |
1787 | } | |
1788 | ||
1789 | ret = listen (sock, 5); | |
1790 | if (ret < 0) | |
1791 | { | |
3d1dc857 | 1792 | zlog_warn ("Can't listen to unix socket %s: %s", |
1793 | path, safe_strerror (errno)); | |
1794 | zlog_warn ("zebra can't provide full functionality due to above error"); | |
718e3744 | 1795 | close (sock); |
1796 | return; | |
1797 | } | |
1798 | ||
1799 | umask (old_mask); | |
1800 | ||
1801 | zebra_event (ZEBRA_SERV, sock, NULL); | |
1802 | } | |
6b0655a2 | 1803 | |
718e3744 | 1804 | |
b9df2d25 | 1805 | static void |
718e3744 | 1806 | zebra_event (enum event event, int sock, struct zserv *client) |
1807 | { | |
1808 | switch (event) | |
1809 | { | |
1810 | case ZEBRA_SERV: | |
b21b19c5 | 1811 | thread_add_read (zebrad.master, zebra_accept, client, sock); |
718e3744 | 1812 | break; |
1813 | case ZEBRA_READ: | |
1814 | client->t_read = | |
b21b19c5 | 1815 | thread_add_read (zebrad.master, zebra_client_read, client, sock); |
718e3744 | 1816 | break; |
1817 | case ZEBRA_WRITE: | |
1818 | /**/ | |
1819 | break; | |
1820 | } | |
1821 | } | |
6b0655a2 | 1822 | |
718e3744 | 1823 | /* Display default rtm_table for all clients. */ |
1824 | DEFUN (show_table, | |
1825 | show_table_cmd, | |
1826 | "show table", | |
1827 | SHOW_STR | |
1828 | "default routing table to use for all clients\n") | |
1829 | { | |
b21b19c5 | 1830 | vty_out (vty, "table %d%s", zebrad.rtm_table_default, |
718e3744 | 1831 | VTY_NEWLINE); |
1832 | return CMD_SUCCESS; | |
1833 | } | |
1834 | ||
1835 | DEFUN (config_table, | |
1836 | config_table_cmd, | |
1837 | "table TABLENO", | |
1838 | "Configure target kernel routing table\n" | |
1839 | "TABLE integer\n") | |
1840 | { | |
b21b19c5 | 1841 | zebrad.rtm_table_default = strtol (argv[0], (char**)0, 10); |
718e3744 | 1842 | return CMD_SUCCESS; |
1843 | } | |
1844 | ||
647e4f1f | 1845 | DEFUN (ip_forwarding, |
1846 | ip_forwarding_cmd, | |
1847 | "ip forwarding", | |
1848 | IP_STR | |
1849 | "Turn on IP forwarding") | |
1850 | { | |
1851 | int ret; | |
1852 | ||
1853 | ret = ipforward (); | |
b71f00f2 | 1854 | if (ret == 0) |
1855 | ret = ipforward_on (); | |
647e4f1f | 1856 | |
647e4f1f | 1857 | if (ret == 0) |
1858 | { | |
1859 | vty_out (vty, "Can't turn on IP forwarding%s", VTY_NEWLINE); | |
1860 | return CMD_WARNING; | |
1861 | } | |
1862 | ||
1863 | return CMD_SUCCESS; | |
1864 | } | |
1865 | ||
718e3744 | 1866 | DEFUN (no_ip_forwarding, |
1867 | no_ip_forwarding_cmd, | |
1868 | "no ip forwarding", | |
1869 | NO_STR | |
1870 | IP_STR | |
1871 | "Turn off IP forwarding") | |
1872 | { | |
1873 | int ret; | |
1874 | ||
1875 | ret = ipforward (); | |
b71f00f2 | 1876 | if (ret != 0) |
1877 | ret = ipforward_off (); | |
718e3744 | 1878 | |
718e3744 | 1879 | if (ret != 0) |
1880 | { | |
1881 | vty_out (vty, "Can't turn off IP forwarding%s", VTY_NEWLINE); | |
1882 | return CMD_WARNING; | |
1883 | } | |
1884 | ||
1885 | return CMD_SUCCESS; | |
1886 | } | |
1887 | ||
1888 | /* This command is for debugging purpose. */ | |
1889 | DEFUN (show_zebra_client, | |
1890 | show_zebra_client_cmd, | |
1891 | "show zebra client", | |
1892 | SHOW_STR | |
1893 | "Zebra information" | |
1894 | "Client information") | |
1895 | { | |
52dc7ee6 | 1896 | struct listnode *node; |
718e3744 | 1897 | struct zserv *client; |
1898 | ||
1eb8ef25 | 1899 | for (ALL_LIST_ELEMENTS_RO (zebrad.client_list, node, client)) |
fb018d25 DS |
1900 | vty_out (vty, "Client %s fd %d%s", |
1901 | zebra_route_string(client->proto), client->sock, | |
1902 | VTY_NEWLINE); | |
1903 | ||
718e3744 | 1904 | return CMD_SUCCESS; |
1905 | } | |
1906 | ||
1907 | /* Table configuration write function. */ | |
b9df2d25 | 1908 | static int |
718e3744 | 1909 | config_write_table (struct vty *vty) |
1910 | { | |
b21b19c5 | 1911 | if (zebrad.rtm_table_default) |
1912 | vty_out (vty, "table %d%s", zebrad.rtm_table_default, | |
718e3744 | 1913 | VTY_NEWLINE); |
1914 | return 0; | |
1915 | } | |
1916 | ||
1917 | /* table node for routing tables. */ | |
7fc626de | 1918 | static struct cmd_node table_node = |
718e3744 | 1919 | { |
1920 | TABLE_NODE, | |
1921 | "", /* This node has no interface. */ | |
1922 | 1 | |
1923 | }; | |
6b0655a2 | 1924 | |
718e3744 | 1925 | /* Only display ip forwarding is enabled or not. */ |
1926 | DEFUN (show_ip_forwarding, | |
1927 | show_ip_forwarding_cmd, | |
1928 | "show ip forwarding", | |
1929 | SHOW_STR | |
1930 | IP_STR | |
1931 | "IP forwarding status\n") | |
1932 | { | |
1933 | int ret; | |
1934 | ||
1935 | ret = ipforward (); | |
1936 | ||
1937 | if (ret == 0) | |
1938 | vty_out (vty, "IP forwarding is off%s", VTY_NEWLINE); | |
1939 | else | |
1940 | vty_out (vty, "IP forwarding is on%s", VTY_NEWLINE); | |
1941 | return CMD_SUCCESS; | |
1942 | } | |
1943 | ||
1944 | #ifdef HAVE_IPV6 | |
1945 | /* Only display ipv6 forwarding is enabled or not. */ | |
1946 | DEFUN (show_ipv6_forwarding, | |
1947 | show_ipv6_forwarding_cmd, | |
1948 | "show ipv6 forwarding", | |
1949 | SHOW_STR | |
1950 | "IPv6 information\n" | |
1951 | "Forwarding status\n") | |
1952 | { | |
1953 | int ret; | |
1954 | ||
1955 | ret = ipforward_ipv6 (); | |
1956 | ||
1957 | switch (ret) | |
1958 | { | |
1959 | case -1: | |
1960 | vty_out (vty, "ipv6 forwarding is unknown%s", VTY_NEWLINE); | |
1961 | break; | |
1962 | case 0: | |
1963 | vty_out (vty, "ipv6 forwarding is %s%s", "off", VTY_NEWLINE); | |
1964 | break; | |
1965 | case 1: | |
1966 | vty_out (vty, "ipv6 forwarding is %s%s", "on", VTY_NEWLINE); | |
1967 | break; | |
1968 | default: | |
1969 | vty_out (vty, "ipv6 forwarding is %s%s", "off", VTY_NEWLINE); | |
1970 | break; | |
1971 | } | |
1972 | return CMD_SUCCESS; | |
1973 | } | |
1974 | ||
55906724 | 1975 | DEFUN (ipv6_forwarding, |
1976 | ipv6_forwarding_cmd, | |
1977 | "ipv6 forwarding", | |
1978 | IPV6_STR | |
1979 | "Turn on IPv6 forwarding") | |
1980 | { | |
1981 | int ret; | |
1982 | ||
41d3fc96 | 1983 | ret = ipforward_ipv6 (); |
b71f00f2 | 1984 | if (ret == 0) |
1985 | ret = ipforward_ipv6_on (); | |
41d3fc96 | 1986 | |
41d3fc96 | 1987 | if (ret == 0) |
55906724 | 1988 | { |
1989 | vty_out (vty, "Can't turn on IPv6 forwarding%s", VTY_NEWLINE); | |
1990 | return CMD_WARNING; | |
1991 | } | |
1992 | ||
1993 | return CMD_SUCCESS; | |
1994 | } | |
1995 | ||
718e3744 | 1996 | DEFUN (no_ipv6_forwarding, |
1997 | no_ipv6_forwarding_cmd, | |
1998 | "no ipv6 forwarding", | |
1999 | NO_STR | |
55906724 | 2000 | IPV6_STR |
2001 | "Turn off IPv6 forwarding") | |
718e3744 | 2002 | { |
2003 | int ret; | |
2004 | ||
41d3fc96 | 2005 | ret = ipforward_ipv6 (); |
b71f00f2 | 2006 | if (ret != 0) |
2007 | ret = ipforward_ipv6_off (); | |
41d3fc96 | 2008 | |
718e3744 | 2009 | if (ret != 0) |
2010 | { | |
2011 | vty_out (vty, "Can't turn off IPv6 forwarding%s", VTY_NEWLINE); | |
2012 | return CMD_WARNING; | |
2013 | } | |
2014 | ||
2015 | return CMD_SUCCESS; | |
2016 | } | |
2017 | ||
2018 | #endif /* HAVE_IPV6 */ | |
2019 | ||
2020 | /* IPForwarding configuration write function. */ | |
719e9741 | 2021 | static int |
718e3744 | 2022 | config_write_forwarding (struct vty *vty) |
2023 | { | |
18a6dce6 | 2024 | /* FIXME: Find better place for that. */ |
2025 | router_id_write (vty); | |
2026 | ||
3e0b3a56 | 2027 | if (ipforward ()) |
2028 | vty_out (vty, "ip forwarding%s", VTY_NEWLINE); | |
718e3744 | 2029 | #ifdef HAVE_IPV6 |
3e0b3a56 | 2030 | if (ipforward_ipv6 ()) |
2031 | vty_out (vty, "ipv6 forwarding%s", VTY_NEWLINE); | |
718e3744 | 2032 | #endif /* HAVE_IPV6 */ |
2033 | vty_out (vty, "!%s", VTY_NEWLINE); | |
2034 | return 0; | |
2035 | } | |
2036 | ||
2037 | /* table node for routing tables. */ | |
7fc626de | 2038 | static struct cmd_node forwarding_node = |
718e3744 | 2039 | { |
2040 | FORWARDING_NODE, | |
2041 | "", /* This node has no interface. */ | |
2042 | 1 | |
2043 | }; | |
2044 | ||
6b0655a2 | 2045 | |
718e3744 | 2046 | /* Initialisation of zebra and installation of commands. */ |
2047 | void | |
a1ac18c4 | 2048 | zebra_init (void) |
718e3744 | 2049 | { |
2050 | /* Client list init. */ | |
b21b19c5 | 2051 | zebrad.client_list = list_new (); |
718e3744 | 2052 | |
718e3744 | 2053 | /* Install configuration write function. */ |
2054 | install_node (&table_node, config_write_table); | |
2055 | install_node (&forwarding_node, config_write_forwarding); | |
2056 | ||
2057 | install_element (VIEW_NODE, &show_ip_forwarding_cmd); | |
2058 | install_element (ENABLE_NODE, &show_ip_forwarding_cmd); | |
647e4f1f | 2059 | install_element (CONFIG_NODE, &ip_forwarding_cmd); |
718e3744 | 2060 | install_element (CONFIG_NODE, &no_ip_forwarding_cmd); |
2061 | install_element (ENABLE_NODE, &show_zebra_client_cmd); | |
2062 | ||
2063 | #ifdef HAVE_NETLINK | |
2064 | install_element (VIEW_NODE, &show_table_cmd); | |
2065 | install_element (ENABLE_NODE, &show_table_cmd); | |
2066 | install_element (CONFIG_NODE, &config_table_cmd); | |
2067 | #endif /* HAVE_NETLINK */ | |
2068 | ||
2069 | #ifdef HAVE_IPV6 | |
2070 | install_element (VIEW_NODE, &show_ipv6_forwarding_cmd); | |
2071 | install_element (ENABLE_NODE, &show_ipv6_forwarding_cmd); | |
55906724 | 2072 | install_element (CONFIG_NODE, &ipv6_forwarding_cmd); |
718e3744 | 2073 | install_element (CONFIG_NODE, &no_ipv6_forwarding_cmd); |
2074 | #endif /* HAVE_IPV6 */ | |
7514fb77 PJ |
2075 | |
2076 | /* Route-map */ | |
2077 | zebra_route_map_init (); | |
718e3744 | 2078 | } |
97be79f9 DO |
2079 | |
2080 | /* Make zebra server socket, wiping any existing one (see bug #403). */ | |
2081 | void | |
b5114685 | 2082 | zebra_zserv_socket_init (char *path) |
97be79f9 DO |
2083 | { |
2084 | #ifdef HAVE_TCP_ZEBRA | |
2085 | zebra_serv (); | |
2086 | #else | |
b5114685 | 2087 | zebra_serv_un (path ? path : ZEBRA_SERV_PATH); |
97be79f9 DO |
2088 | #endif /* HAVE_TCP_ZEBRA */ |
2089 | } |