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1 | /* | |
2 | * Zebra API message creation & consumption. | |
3 | * Portions: | |
4 | * Copyright (C) 1997-1999 Kunihiro Ishiguro | |
5 | * Copyright (C) 2015-2018 Cumulus Networks, Inc. | |
6 | * et al. | |
7 | * | |
8 | * This program is free software; you can redistribute it and/or modify it | |
9 | * under the terms of the GNU General Public License as published by the Free | |
10 | * Software Foundation; either version 2 of the License, or (at your option) | |
11 | * any later version. | |
12 | * | |
13 | * This program is distributed in the hope that it will be useful, but WITHOUT | |
14 | * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or | |
15 | * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for | |
16 | * more details. | |
17 | * | |
18 | * You should have received a copy of the GNU General Public License along | |
19 | * with this program; see the file COPYING; if not, write to the Free Software | |
20 | * Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA | |
21 | */ | |
22 | ||
23 | #include <zebra.h> | |
24 | #include <libgen.h> | |
25 | ||
26 | #include "lib/prefix.h" | |
27 | #include "lib/command.h" | |
28 | #include "lib/if.h" | |
29 | #include "lib/thread.h" | |
30 | #include "lib/stream.h" | |
31 | #include "lib/memory.h" | |
32 | #include "lib/table.h" | |
33 | #include "lib/network.h" | |
34 | #include "lib/sockunion.h" | |
35 | #include "lib/log.h" | |
36 | #include "lib/zclient.h" | |
37 | #include "lib/privs.h" | |
38 | #include "lib/network.h" | |
39 | #include "lib/buffer.h" | |
40 | #include "lib/nexthop.h" | |
41 | #include "lib/vrf.h" | |
42 | #include "lib/libfrr.h" | |
43 | #include "lib/sockopt.h" | |
44 | ||
45 | #include "zebra/rib.h" | |
46 | #include "zebra/zebra_memory.h" | |
47 | #include "zebra/zebra_ns.h" | |
48 | #include "zebra/zebra_vrf.h" | |
49 | #include "zebra/router-id.h" | |
50 | #include "zebra/redistribute.h" | |
51 | #include "zebra/debug.h" | |
52 | #include "zebra/zebra_rnh.h" | |
53 | #include "zebra/rt_netlink.h" | |
54 | #include "zebra/interface.h" | |
55 | #include "zebra/zebra_ptm.h" | |
56 | #include "zebra/rtadv.h" | |
57 | #include "zebra/zebra_mpls.h" | |
58 | #include "zebra/zebra_mroute.h" | |
59 | #include "zebra/label_manager.h" | |
60 | #include "zebra/zebra_vxlan.h" | |
61 | #include "zebra/rt.h" | |
62 | #include "zebra/zebra_pbr.h" | |
63 | #include "zebra/table_manager.h" | |
64 | #include "zebra/zapi_msg.h" | |
65 | ||
66 | /* Encoding helpers -------------------------------------------------------- */ | |
67 | ||
68 | static void zserv_encode_interface(struct stream *s, struct interface *ifp) | |
69 | { | |
70 | /* Interface information. */ | |
71 | stream_put(s, ifp->name, INTERFACE_NAMSIZ); | |
72 | stream_putl(s, ifp->ifindex); | |
73 | stream_putc(s, ifp->status); | |
74 | stream_putq(s, ifp->flags); | |
75 | stream_putc(s, ifp->ptm_enable); | |
76 | stream_putc(s, ifp->ptm_status); | |
77 | stream_putl(s, ifp->metric); | |
78 | stream_putl(s, ifp->speed); | |
79 | stream_putl(s, ifp->mtu); | |
80 | stream_putl(s, ifp->mtu6); | |
81 | stream_putl(s, ifp->bandwidth); | |
82 | stream_putl(s, ifp->ll_type); | |
83 | stream_putl(s, ifp->hw_addr_len); | |
84 | if (ifp->hw_addr_len) | |
85 | stream_put(s, ifp->hw_addr, ifp->hw_addr_len); | |
86 | ||
87 | /* Then, Traffic Engineering parameters if any */ | |
88 | if (HAS_LINK_PARAMS(ifp) && IS_LINK_PARAMS_SET(ifp->link_params)) { | |
89 | stream_putc(s, 1); | |
90 | zebra_interface_link_params_write(s, ifp); | |
91 | } else | |
92 | stream_putc(s, 0); | |
93 | ||
94 | /* Write packet size. */ | |
95 | stream_putw_at(s, 0, stream_get_endp(s)); | |
96 | } | |
97 | ||
98 | static void zserv_encode_vrf(struct stream *s, struct zebra_vrf *zvrf) | |
99 | { | |
100 | struct vrf_data data; | |
101 | const char *netns_name = zvrf_ns_name(zvrf); | |
102 | ||
103 | data.l.table_id = zvrf->table_id; | |
104 | ||
105 | if (netns_name) | |
106 | strlcpy(data.l.netns_name, basename((char *)netns_name), | |
107 | NS_NAMSIZ); | |
108 | else | |
109 | memset(data.l.netns_name, 0, NS_NAMSIZ); | |
110 | /* Pass the tableid and the netns NAME */ | |
111 | stream_put(s, &data, sizeof(struct vrf_data)); | |
112 | /* Interface information. */ | |
113 | stream_put(s, zvrf_name(zvrf), VRF_NAMSIZ); | |
114 | /* Write packet size. */ | |
115 | stream_putw_at(s, 0, stream_get_endp(s)); | |
116 | } | |
117 | ||
118 | static int zserv_encode_nexthop(struct stream *s, struct nexthop *nexthop) | |
119 | { | |
120 | stream_putc(s, nexthop->type); | |
121 | switch (nexthop->type) { | |
122 | case NEXTHOP_TYPE_IPV4: | |
123 | case NEXTHOP_TYPE_IPV4_IFINDEX: | |
124 | stream_put_in_addr(s, &nexthop->gate.ipv4); | |
125 | stream_putl(s, nexthop->ifindex); | |
126 | break; | |
127 | case NEXTHOP_TYPE_IPV6: | |
128 | stream_put(s, &nexthop->gate.ipv6, 16); | |
129 | break; | |
130 | case NEXTHOP_TYPE_IPV6_IFINDEX: | |
131 | stream_put(s, &nexthop->gate.ipv6, 16); | |
132 | stream_putl(s, nexthop->ifindex); | |
133 | break; | |
134 | case NEXTHOP_TYPE_IFINDEX: | |
135 | stream_putl(s, nexthop->ifindex); | |
136 | break; | |
137 | default: | |
138 | /* do nothing */ | |
139 | break; | |
140 | } | |
141 | return 1; | |
142 | } | |
143 | ||
144 | /* Send handlers ----------------------------------------------------------- */ | |
145 | ||
146 | /* Interface is added. Send ZEBRA_INTERFACE_ADD to client. */ | |
147 | /* | |
148 | * This function is called in the following situations: | |
149 | * - in response to a 3-byte ZEBRA_INTERFACE_ADD request | |
150 | * from the client. | |
151 | * - at startup, when zebra figures out the available interfaces | |
152 | * - when an interface is added (where support for | |
153 | * RTM_IFANNOUNCE or AF_NETLINK sockets is available), or when | |
154 | * an interface is marked IFF_UP (i.e., an RTM_IFINFO message is | |
155 | * received) | |
156 | */ | |
157 | int zsend_interface_add(struct zserv *client, struct interface *ifp) | |
158 | { | |
159 | struct stream *s = stream_new(ZEBRA_MAX_PACKET_SIZ); | |
160 | ||
161 | zclient_create_header(s, ZEBRA_INTERFACE_ADD, ifp->vrf_id); | |
162 | zserv_encode_interface(s, ifp); | |
163 | ||
164 | client->ifadd_cnt++; | |
165 | return zserv_send_message(client, s); | |
166 | } | |
167 | ||
168 | /* Interface deletion from zebra daemon. */ | |
169 | int zsend_interface_delete(struct zserv *client, struct interface *ifp) | |
170 | { | |
171 | struct stream *s = stream_new(ZEBRA_MAX_PACKET_SIZ); | |
172 | ||
173 | zclient_create_header(s, ZEBRA_INTERFACE_DELETE, ifp->vrf_id); | |
174 | zserv_encode_interface(s, ifp); | |
175 | ||
176 | client->ifdel_cnt++; | |
177 | return zserv_send_message(client, s); | |
178 | } | |
179 | ||
180 | int zsend_vrf_add(struct zserv *client, struct zebra_vrf *zvrf) | |
181 | { | |
182 | struct stream *s = stream_new(ZEBRA_MAX_PACKET_SIZ); | |
183 | ||
184 | zclient_create_header(s, ZEBRA_VRF_ADD, zvrf_id(zvrf)); | |
185 | zserv_encode_vrf(s, zvrf); | |
186 | ||
187 | client->vrfadd_cnt++; | |
188 | return zserv_send_message(client, s); | |
189 | } | |
190 | ||
191 | /* VRF deletion from zebra daemon. */ | |
192 | int zsend_vrf_delete(struct zserv *client, struct zebra_vrf *zvrf) | |
193 | ||
194 | { | |
195 | struct stream *s = stream_new(ZEBRA_MAX_PACKET_SIZ); | |
196 | ||
197 | zclient_create_header(s, ZEBRA_VRF_DELETE, zvrf_id(zvrf)); | |
198 | zserv_encode_vrf(s, zvrf); | |
199 | ||
200 | client->vrfdel_cnt++; | |
201 | return zserv_send_message(client, s); | |
202 | } | |
203 | ||
204 | int zsend_interface_link_params(struct zserv *client, struct interface *ifp) | |
205 | { | |
206 | struct stream *s = stream_new(ZEBRA_MAX_PACKET_SIZ); | |
207 | ||
208 | /* Check this client need interface information. */ | |
209 | if (!client->ifinfo) { | |
210 | stream_free(s); | |
211 | return 0; | |
212 | } | |
213 | ||
214 | if (!ifp->link_params) { | |
215 | stream_free(s); | |
216 | return 0; | |
217 | } | |
218 | ||
219 | zclient_create_header(s, ZEBRA_INTERFACE_LINK_PARAMS, ifp->vrf_id); | |
220 | ||
221 | /* Add Interface Index */ | |
222 | stream_putl(s, ifp->ifindex); | |
223 | ||
224 | /* Then TE Link Parameters */ | |
225 | if (zebra_interface_link_params_write(s, ifp) == 0) { | |
226 | stream_free(s); | |
227 | return 0; | |
228 | } | |
229 | ||
230 | /* Write packet size. */ | |
231 | stream_putw_at(s, 0, stream_get_endp(s)); | |
232 | ||
233 | return zserv_send_message(client, s); | |
234 | } | |
235 | ||
236 | /* Interface address is added/deleted. Send ZEBRA_INTERFACE_ADDRESS_ADD or | |
237 | * ZEBRA_INTERFACE_ADDRESS_DELETE to the client. | |
238 | * | |
239 | * A ZEBRA_INTERFACE_ADDRESS_ADD is sent in the following situations: | |
240 | * - in response to a 3-byte ZEBRA_INTERFACE_ADD request | |
241 | * from the client, after the ZEBRA_INTERFACE_ADD has been | |
242 | * sent from zebra to the client | |
243 | * - redistribute new address info to all clients in the following situations | |
244 | * - at startup, when zebra figures out the available interfaces | |
245 | * - when an interface is added (where support for | |
246 | * RTM_IFANNOUNCE or AF_NETLINK sockets is available), or when | |
247 | * an interface is marked IFF_UP (i.e., an RTM_IFINFO message is | |
248 | * received) | |
249 | * - for the vty commands "ip address A.B.C.D/M [<secondary>|<label LINE>]" | |
250 | * and "no bandwidth <1-10000000>", "ipv6 address X:X::X:X/M" | |
251 | * - when an RTM_NEWADDR message is received from the kernel, | |
252 | * | |
253 | * The call tree that triggers ZEBRA_INTERFACE_ADDRESS_DELETE: | |
254 | * | |
255 | * zsend_interface_address(DELETE) | |
256 | * ^ | |
257 | * | | |
258 | * zebra_interface_address_delete_update | |
259 | * ^ ^ ^ | |
260 | * | | if_delete_update | |
261 | * | | | |
262 | * ip_address_uninstall connected_delete_ipv4 | |
263 | * [ipv6_addresss_uninstall] [connected_delete_ipv6] | |
264 | * ^ ^ | |
265 | * | | | |
266 | * | RTM_NEWADDR on routing/netlink socket | |
267 | * | | |
268 | * vty commands: | |
269 | * "no ip address A.B.C.D/M [label LINE]" | |
270 | * "no ip address A.B.C.D/M secondary" | |
271 | * ["no ipv6 address X:X::X:X/M"] | |
272 | * | |
273 | */ | |
274 | int zsend_interface_address(int cmd, struct zserv *client, | |
275 | struct interface *ifp, struct connected *ifc) | |
276 | { | |
277 | int blen; | |
278 | struct prefix *p; | |
279 | struct stream *s = stream_new(ZEBRA_MAX_PACKET_SIZ); | |
280 | ||
281 | zclient_create_header(s, cmd, ifp->vrf_id); | |
282 | stream_putl(s, ifp->ifindex); | |
283 | ||
284 | /* Interface address flag. */ | |
285 | stream_putc(s, ifc->flags); | |
286 | ||
287 | /* Prefix information. */ | |
288 | p = ifc->address; | |
289 | stream_putc(s, p->family); | |
290 | blen = prefix_blen(p); | |
291 | stream_put(s, &p->u.prefix, blen); | |
292 | ||
293 | /* | |
294 | * XXX gnu version does not send prefixlen for | |
295 | * ZEBRA_INTERFACE_ADDRESS_DELETE | |
296 | * but zebra_interface_address_delete_read() in the gnu version | |
297 | * expects to find it | |
298 | */ | |
299 | stream_putc(s, p->prefixlen); | |
300 | ||
301 | /* Destination. */ | |
302 | p = ifc->destination; | |
303 | if (p) | |
304 | stream_put(s, &p->u.prefix, blen); | |
305 | else | |
306 | stream_put(s, NULL, blen); | |
307 | ||
308 | /* Write packet size. */ | |
309 | stream_putw_at(s, 0, stream_get_endp(s)); | |
310 | ||
311 | client->connected_rt_add_cnt++; | |
312 | return zserv_send_message(client, s); | |
313 | } | |
314 | ||
315 | static int zsend_interface_nbr_address(int cmd, struct zserv *client, | |
316 | struct interface *ifp, | |
317 | struct nbr_connected *ifc) | |
318 | { | |
319 | int blen; | |
320 | struct stream *s = stream_new(ZEBRA_MAX_PACKET_SIZ); | |
321 | struct prefix *p; | |
322 | ||
323 | zclient_create_header(s, cmd, ifp->vrf_id); | |
324 | stream_putl(s, ifp->ifindex); | |
325 | ||
326 | /* Prefix information. */ | |
327 | p = ifc->address; | |
328 | stream_putc(s, p->family); | |
329 | blen = prefix_blen(p); | |
330 | stream_put(s, &p->u.prefix, blen); | |
331 | ||
332 | /* | |
333 | * XXX gnu version does not send prefixlen for | |
334 | * ZEBRA_INTERFACE_ADDRESS_DELETE | |
335 | * but zebra_interface_address_delete_read() in the gnu version | |
336 | * expects to find it | |
337 | */ | |
338 | stream_putc(s, p->prefixlen); | |
339 | ||
340 | /* Write packet size. */ | |
341 | stream_putw_at(s, 0, stream_get_endp(s)); | |
342 | ||
343 | return zserv_send_message(client, s); | |
344 | } | |
345 | ||
346 | /* Interface address addition. */ | |
347 | static void zebra_interface_nbr_address_add_update(struct interface *ifp, | |
348 | struct nbr_connected *ifc) | |
349 | { | |
350 | struct listnode *node, *nnode; | |
351 | struct zserv *client; | |
352 | struct prefix *p; | |
353 | ||
354 | if (IS_ZEBRA_DEBUG_EVENT) { | |
355 | char buf[INET6_ADDRSTRLEN]; | |
356 | ||
357 | p = ifc->address; | |
358 | zlog_debug( | |
359 | "MESSAGE: ZEBRA_INTERFACE_NBR_ADDRESS_ADD %s/%d on %s", | |
360 | inet_ntop(p->family, &p->u.prefix, buf, | |
361 | INET6_ADDRSTRLEN), | |
362 | p->prefixlen, ifc->ifp->name); | |
363 | } | |
364 | ||
365 | for (ALL_LIST_ELEMENTS(zebrad.client_list, node, nnode, client)) | |
366 | zsend_interface_nbr_address(ZEBRA_INTERFACE_NBR_ADDRESS_ADD, | |
367 | client, ifp, ifc); | |
368 | } | |
369 | ||
370 | /* Interface address deletion. */ | |
371 | static void zebra_interface_nbr_address_delete_update(struct interface *ifp, | |
372 | struct nbr_connected *ifc) | |
373 | { | |
374 | struct listnode *node, *nnode; | |
375 | struct zserv *client; | |
376 | struct prefix *p; | |
377 | ||
378 | if (IS_ZEBRA_DEBUG_EVENT) { | |
379 | char buf[INET6_ADDRSTRLEN]; | |
380 | ||
381 | p = ifc->address; | |
382 | zlog_debug( | |
383 | "MESSAGE: ZEBRA_INTERFACE_NBR_ADDRESS_DELETE %s/%d on %s", | |
384 | inet_ntop(p->family, &p->u.prefix, buf, | |
385 | INET6_ADDRSTRLEN), | |
386 | p->prefixlen, ifc->ifp->name); | |
387 | } | |
388 | ||
389 | for (ALL_LIST_ELEMENTS(zebrad.client_list, node, nnode, client)) | |
390 | zsend_interface_nbr_address(ZEBRA_INTERFACE_NBR_ADDRESS_DELETE, | |
391 | client, ifp, ifc); | |
392 | } | |
393 | ||
394 | /* Send addresses on interface to client */ | |
395 | int zsend_interface_addresses(struct zserv *client, struct interface *ifp) | |
396 | { | |
397 | struct listnode *cnode, *cnnode; | |
398 | struct connected *c; | |
399 | struct nbr_connected *nc; | |
400 | ||
401 | /* Send interface addresses. */ | |
402 | for (ALL_LIST_ELEMENTS(ifp->connected, cnode, cnnode, c)) { | |
403 | if (!CHECK_FLAG(c->conf, ZEBRA_IFC_REAL)) | |
404 | continue; | |
405 | ||
406 | if (zsend_interface_address(ZEBRA_INTERFACE_ADDRESS_ADD, client, | |
407 | ifp, c) | |
408 | < 0) | |
409 | return -1; | |
410 | } | |
411 | ||
412 | /* Send interface neighbors. */ | |
413 | for (ALL_LIST_ELEMENTS(ifp->nbr_connected, cnode, cnnode, nc)) { | |
414 | if (zsend_interface_nbr_address(ZEBRA_INTERFACE_NBR_ADDRESS_ADD, | |
415 | client, ifp, nc) | |
416 | < 0) | |
417 | return -1; | |
418 | } | |
419 | ||
420 | return 0; | |
421 | } | |
422 | ||
423 | /* Notify client about interface moving from one VRF to another. | |
424 | * Whether client is interested in old and new VRF is checked by caller. | |
425 | */ | |
426 | int zsend_interface_vrf_update(struct zserv *client, struct interface *ifp, | |
427 | vrf_id_t vrf_id) | |
428 | { | |
429 | struct stream *s = stream_new(ZEBRA_MAX_PACKET_SIZ); | |
430 | ||
431 | zclient_create_header(s, ZEBRA_INTERFACE_VRF_UPDATE, ifp->vrf_id); | |
432 | ||
433 | /* Fill in the ifIndex of the interface and its new VRF (id) */ | |
434 | stream_putl(s, ifp->ifindex); | |
435 | stream_putl(s, vrf_id); | |
436 | ||
437 | /* Write packet size. */ | |
438 | stream_putw_at(s, 0, stream_get_endp(s)); | |
439 | ||
440 | client->if_vrfchg_cnt++; | |
441 | return zserv_send_message(client, s); | |
442 | } | |
443 | ||
444 | /* Add new nbr connected IPv6 address */ | |
445 | void nbr_connected_add_ipv6(struct interface *ifp, struct in6_addr *address) | |
446 | { | |
447 | struct nbr_connected *ifc; | |
448 | struct prefix p; | |
449 | ||
450 | p.family = AF_INET6; | |
451 | IPV6_ADDR_COPY(&p.u.prefix, address); | |
452 | p.prefixlen = IPV6_MAX_PREFIXLEN; | |
453 | ||
454 | ifc = listnode_head(ifp->nbr_connected); | |
455 | if (!ifc) { | |
456 | /* new addition */ | |
457 | ifc = nbr_connected_new(); | |
458 | ifc->address = prefix_new(); | |
459 | ifc->ifp = ifp; | |
460 | listnode_add(ifp->nbr_connected, ifc); | |
461 | } | |
462 | ||
463 | prefix_copy(ifc->address, &p); | |
464 | ||
465 | zebra_interface_nbr_address_add_update(ifp, ifc); | |
466 | ||
467 | if_nbr_ipv6ll_to_ipv4ll_neigh_update(ifp, address, 1); | |
468 | } | |
469 | ||
470 | void nbr_connected_delete_ipv6(struct interface *ifp, struct in6_addr *address) | |
471 | { | |
472 | struct nbr_connected *ifc; | |
473 | struct prefix p; | |
474 | ||
475 | p.family = AF_INET6; | |
476 | IPV6_ADDR_COPY(&p.u.prefix, address); | |
477 | p.prefixlen = IPV6_MAX_PREFIXLEN; | |
478 | ||
479 | ifc = nbr_connected_check(ifp, &p); | |
480 | if (!ifc) | |
481 | return; | |
482 | ||
483 | listnode_delete(ifp->nbr_connected, ifc); | |
484 | ||
485 | zebra_interface_nbr_address_delete_update(ifp, ifc); | |
486 | ||
487 | if_nbr_ipv6ll_to_ipv4ll_neigh_update(ifp, address, 0); | |
488 | ||
489 | nbr_connected_free(ifc); | |
490 | } | |
491 | ||
492 | /* | |
493 | * The cmd passed to zsend_interface_update may be ZEBRA_INTERFACE_UP or | |
494 | * ZEBRA_INTERFACE_DOWN. | |
495 | * | |
496 | * The ZEBRA_INTERFACE_UP message is sent from the zebra server to | |
497 | * the clients in one of 2 situations: | |
498 | * - an if_up is detected e.g., as a result of an RTM_IFINFO message | |
499 | * - a vty command modifying the bandwidth of an interface is received. | |
500 | * The ZEBRA_INTERFACE_DOWN message is sent when an if_down is detected. | |
501 | */ | |
502 | int zsend_interface_update(int cmd, struct zserv *client, struct interface *ifp) | |
503 | { | |
504 | struct stream *s = stream_new(ZEBRA_MAX_PACKET_SIZ); | |
505 | ||
506 | zclient_create_header(s, cmd, ifp->vrf_id); | |
507 | zserv_encode_interface(s, ifp); | |
508 | ||
509 | if (cmd == ZEBRA_INTERFACE_UP) | |
510 | client->ifup_cnt++; | |
511 | else | |
512 | client->ifdown_cnt++; | |
513 | ||
514 | return zserv_send_message(client, s); | |
515 | } | |
516 | ||
517 | int zsend_redistribute_route(int cmd, struct zserv *client, struct prefix *p, | |
518 | struct prefix *src_p, struct route_entry *re) | |
519 | { | |
520 | struct zapi_route api; | |
521 | struct zapi_nexthop *api_nh; | |
522 | struct nexthop *nexthop; | |
523 | int count = 0; | |
524 | ||
525 | memset(&api, 0, sizeof(api)); | |
526 | api.vrf_id = re->vrf_id; | |
527 | api.type = re->type; | |
528 | api.instance = re->instance; | |
529 | api.flags = re->flags; | |
530 | ||
531 | /* Prefix. */ | |
532 | api.prefix = *p; | |
533 | if (src_p) { | |
534 | SET_FLAG(api.message, ZAPI_MESSAGE_SRCPFX); | |
535 | memcpy(&api.src_prefix, src_p, sizeof(api.src_prefix)); | |
536 | } | |
537 | ||
538 | /* Nexthops. */ | |
539 | if (re->nexthop_active_num) { | |
540 | SET_FLAG(api.message, ZAPI_MESSAGE_NEXTHOP); | |
541 | api.nexthop_num = re->nexthop_active_num; | |
542 | } | |
543 | for (nexthop = re->ng.nexthop; nexthop; nexthop = nexthop->next) { | |
544 | if (!CHECK_FLAG(nexthop->flags, NEXTHOP_FLAG_ACTIVE)) | |
545 | continue; | |
546 | ||
547 | api_nh = &api.nexthops[count]; | |
548 | api_nh->vrf_id = nexthop->vrf_id; | |
549 | api_nh->type = nexthop->type; | |
550 | switch (nexthop->type) { | |
551 | case NEXTHOP_TYPE_BLACKHOLE: | |
552 | api_nh->bh_type = nexthop->bh_type; | |
553 | break; | |
554 | case NEXTHOP_TYPE_IPV4: | |
555 | api_nh->gate.ipv4 = nexthop->gate.ipv4; | |
556 | break; | |
557 | case NEXTHOP_TYPE_IPV4_IFINDEX: | |
558 | api_nh->gate.ipv4 = nexthop->gate.ipv4; | |
559 | api_nh->ifindex = nexthop->ifindex; | |
560 | break; | |
561 | case NEXTHOP_TYPE_IFINDEX: | |
562 | api_nh->ifindex = nexthop->ifindex; | |
563 | break; | |
564 | case NEXTHOP_TYPE_IPV6: | |
565 | api_nh->gate.ipv6 = nexthop->gate.ipv6; | |
566 | break; | |
567 | case NEXTHOP_TYPE_IPV6_IFINDEX: | |
568 | api_nh->gate.ipv6 = nexthop->gate.ipv6; | |
569 | api_nh->ifindex = nexthop->ifindex; | |
570 | } | |
571 | count++; | |
572 | } | |
573 | ||
574 | /* Attributes. */ | |
575 | SET_FLAG(api.message, ZAPI_MESSAGE_DISTANCE); | |
576 | api.distance = re->distance; | |
577 | SET_FLAG(api.message, ZAPI_MESSAGE_METRIC); | |
578 | api.metric = re->metric; | |
579 | if (re->tag) { | |
580 | SET_FLAG(api.message, ZAPI_MESSAGE_TAG); | |
581 | api.tag = re->tag; | |
582 | } | |
583 | SET_FLAG(api.message, ZAPI_MESSAGE_MTU); | |
584 | api.mtu = re->mtu; | |
585 | ||
586 | struct stream *s = stream_new(ZEBRA_MAX_PACKET_SIZ); | |
587 | ||
588 | /* Encode route and send. */ | |
589 | if (zapi_route_encode(cmd, s, &api) < 0) { | |
590 | stream_free(s); | |
591 | return -1; | |
592 | } | |
593 | ||
594 | if (IS_ZEBRA_DEBUG_SEND) { | |
595 | char buf_prefix[PREFIX_STRLEN]; | |
596 | ||
597 | prefix2str(&api.prefix, buf_prefix, sizeof(buf_prefix)); | |
598 | ||
599 | zlog_debug("%s: %s to client %s: type %s, vrf_id %d, p %s", | |
600 | __func__, zserv_command_string(cmd), | |
601 | zebra_route_string(client->proto), | |
602 | zebra_route_string(api.type), api.vrf_id, | |
603 | buf_prefix); | |
604 | } | |
605 | return zserv_send_message(client, s); | |
606 | } | |
607 | ||
608 | /* | |
609 | * Modified version of zsend_ipv4_nexthop_lookup(): Query unicast rib if | |
610 | * nexthop is not found on mrib. Returns both route metric and protocol | |
611 | * distance. | |
612 | */ | |
613 | static int zsend_ipv4_nexthop_lookup_mrib(struct zserv *client, | |
614 | struct in_addr addr, | |
615 | struct route_entry *re, | |
616 | struct zebra_vrf *zvrf) | |
617 | { | |
618 | struct stream *s; | |
619 | unsigned long nump; | |
620 | uint8_t num; | |
621 | struct nexthop *nexthop; | |
622 | ||
623 | /* Get output stream. */ | |
624 | s = stream_new(ZEBRA_MAX_PACKET_SIZ); | |
625 | stream_reset(s); | |
626 | ||
627 | /* Fill in result. */ | |
628 | zclient_create_header(s, ZEBRA_IPV4_NEXTHOP_LOOKUP_MRIB, zvrf_id(zvrf)); | |
629 | stream_put_in_addr(s, &addr); | |
630 | ||
631 | if (re) { | |
632 | stream_putc(s, re->distance); | |
633 | stream_putl(s, re->metric); | |
634 | num = 0; | |
635 | /* remember position for nexthop_num */ | |
636 | nump = stream_get_endp(s); | |
637 | /* reserve room for nexthop_num */ | |
638 | stream_putc(s, 0); | |
639 | /* | |
640 | * Only non-recursive routes are elegible to resolve the | |
641 | * nexthop we are looking up. Therefore, we will just iterate | |
642 | * over the top chain of nexthops. | |
643 | */ | |
644 | for (nexthop = re->ng.nexthop; nexthop; nexthop = nexthop->next) | |
645 | if (CHECK_FLAG(nexthop->flags, NEXTHOP_FLAG_ACTIVE)) | |
646 | num += zserv_encode_nexthop(s, nexthop); | |
647 | ||
648 | /* store nexthop_num */ | |
649 | stream_putc_at(s, nump, num); | |
650 | } else { | |
651 | stream_putc(s, 0); /* distance */ | |
652 | stream_putl(s, 0); /* metric */ | |
653 | stream_putc(s, 0); /* nexthop_num */ | |
654 | } | |
655 | ||
656 | stream_putw_at(s, 0, stream_get_endp(s)); | |
657 | ||
658 | return zserv_send_message(client, s); | |
659 | } | |
660 | ||
661 | int zsend_route_notify_owner(struct route_entry *re, struct prefix *p, | |
662 | enum zapi_route_notify_owner note) | |
663 | { | |
664 | struct zserv *client; | |
665 | struct stream *s; | |
666 | uint8_t blen; | |
667 | ||
668 | client = zserv_find_client(re->type, re->instance); | |
669 | if (!client || !client->notify_owner) { | |
670 | if (IS_ZEBRA_DEBUG_PACKET) { | |
671 | char buff[PREFIX_STRLEN]; | |
672 | ||
673 | zlog_debug( | |
674 | "Not Notifying Owner: %u about prefix %s(%u) %d vrf: %u", | |
675 | re->type, prefix2str(p, buff, sizeof(buff)), | |
676 | re->table, note, re->vrf_id); | |
677 | } | |
678 | return 0; | |
679 | } | |
680 | ||
681 | if (IS_ZEBRA_DEBUG_PACKET) { | |
682 | char buff[PREFIX_STRLEN]; | |
683 | ||
684 | zlog_debug("Notifying Owner: %u about prefix %s(%u) %d vrf: %u", | |
685 | re->type, prefix2str(p, buff, sizeof(buff)), | |
686 | re->table, note, re->vrf_id); | |
687 | } | |
688 | ||
689 | s = stream_new(ZEBRA_MAX_PACKET_SIZ); | |
690 | stream_reset(s); | |
691 | ||
692 | zclient_create_header(s, ZEBRA_ROUTE_NOTIFY_OWNER, re->vrf_id); | |
693 | ||
694 | stream_put(s, ¬e, sizeof(note)); | |
695 | ||
696 | stream_putc(s, p->family); | |
697 | ||
698 | blen = prefix_blen(p); | |
699 | stream_putc(s, p->prefixlen); | |
700 | stream_put(s, &p->u.prefix, blen); | |
701 | ||
702 | stream_putl(s, re->table); | |
703 | ||
704 | stream_putw_at(s, 0, stream_get_endp(s)); | |
705 | ||
706 | return zserv_send_message(client, s); | |
707 | } | |
708 | ||
709 | void zsend_rule_notify_owner(struct zebra_pbr_rule *rule, | |
710 | enum zapi_rule_notify_owner note) | |
711 | { | |
712 | struct listnode *node; | |
713 | struct zserv *client; | |
714 | struct stream *s; | |
715 | ||
716 | if (IS_ZEBRA_DEBUG_PACKET) | |
717 | zlog_debug("%s: Notifying %u", __PRETTY_FUNCTION__, | |
718 | rule->rule.unique); | |
719 | ||
720 | for (ALL_LIST_ELEMENTS_RO(zebrad.client_list, node, client)) { | |
721 | if (rule->sock == client->sock) | |
722 | break; | |
723 | } | |
724 | ||
725 | if (!client) | |
726 | return; | |
727 | ||
728 | s = stream_new(ZEBRA_MAX_PACKET_SIZ); | |
729 | ||
730 | zclient_create_header(s, ZEBRA_RULE_NOTIFY_OWNER, VRF_DEFAULT); | |
731 | stream_put(s, ¬e, sizeof(note)); | |
732 | stream_putl(s, rule->rule.seq); | |
733 | stream_putl(s, rule->rule.priority); | |
734 | stream_putl(s, rule->rule.unique); | |
735 | if (rule->ifp) | |
736 | stream_putl(s, rule->ifp->ifindex); | |
737 | else | |
738 | stream_putl(s, 0); | |
739 | ||
740 | stream_putw_at(s, 0, stream_get_endp(s)); | |
741 | ||
742 | zserv_send_message(client, s); | |
743 | } | |
744 | ||
745 | void zsend_ipset_notify_owner(struct zebra_pbr_ipset *ipset, | |
746 | enum zapi_ipset_notify_owner note) | |
747 | { | |
748 | struct listnode *node; | |
749 | struct zserv *client; | |
750 | struct stream *s; | |
751 | ||
752 | if (IS_ZEBRA_DEBUG_PACKET) | |
753 | zlog_debug("%s: Notifying %u", __PRETTY_FUNCTION__, | |
754 | ipset->unique); | |
755 | ||
756 | for (ALL_LIST_ELEMENTS_RO(zebrad.client_list, node, client)) { | |
757 | if (ipset->sock == client->sock) | |
758 | break; | |
759 | } | |
760 | ||
761 | if (!client) | |
762 | return; | |
763 | ||
764 | s = stream_new(ZEBRA_MAX_PACKET_SIZ); | |
765 | ||
766 | zclient_create_header(s, ZEBRA_IPSET_NOTIFY_OWNER, VRF_DEFAULT); | |
767 | stream_put(s, ¬e, sizeof(note)); | |
768 | stream_putl(s, ipset->unique); | |
769 | stream_put(s, ipset->ipset_name, ZEBRA_IPSET_NAME_SIZE); | |
770 | stream_putw_at(s, 0, stream_get_endp(s)); | |
771 | ||
772 | zserv_send_message(client, s); | |
773 | } | |
774 | ||
775 | void zsend_ipset_entry_notify_owner(struct zebra_pbr_ipset_entry *ipset, | |
776 | enum zapi_ipset_entry_notify_owner note) | |
777 | { | |
778 | struct listnode *node; | |
779 | struct zserv *client; | |
780 | struct stream *s; | |
781 | ||
782 | if (IS_ZEBRA_DEBUG_PACKET) | |
783 | zlog_debug("%s: Notifying %u", __PRETTY_FUNCTION__, | |
784 | ipset->unique); | |
785 | ||
786 | for (ALL_LIST_ELEMENTS_RO(zebrad.client_list, node, client)) { | |
787 | if (ipset->sock == client->sock) | |
788 | break; | |
789 | } | |
790 | ||
791 | if (!client) | |
792 | return; | |
793 | ||
794 | s = stream_new(ZEBRA_MAX_PACKET_SIZ); | |
795 | ||
796 | zclient_create_header(s, ZEBRA_IPSET_ENTRY_NOTIFY_OWNER, VRF_DEFAULT); | |
797 | stream_put(s, ¬e, sizeof(note)); | |
798 | stream_putl(s, ipset->unique); | |
799 | stream_put(s, ipset->backpointer->ipset_name, ZEBRA_IPSET_NAME_SIZE); | |
800 | stream_putw_at(s, 0, stream_get_endp(s)); | |
801 | ||
802 | zserv_send_message(client, s); | |
803 | } | |
804 | ||
805 | void zsend_iptable_notify_owner(struct zebra_pbr_iptable *iptable, | |
806 | enum zapi_iptable_notify_owner note) | |
807 | { | |
808 | struct listnode *node; | |
809 | struct zserv *client; | |
810 | struct stream *s; | |
811 | ||
812 | if (IS_ZEBRA_DEBUG_PACKET) | |
813 | zlog_debug("%s: Notifying %u", __PRETTY_FUNCTION__, | |
814 | iptable->unique); | |
815 | ||
816 | for (ALL_LIST_ELEMENTS_RO(zebrad.client_list, node, client)) { | |
817 | if (iptable->sock == client->sock) | |
818 | break; | |
819 | } | |
820 | ||
821 | if (!client) | |
822 | return; | |
823 | ||
824 | s = stream_new(ZEBRA_MAX_PACKET_SIZ); | |
825 | ||
826 | zclient_create_header(s, ZEBRA_IPTABLE_NOTIFY_OWNER, VRF_DEFAULT); | |
827 | stream_put(s, ¬e, sizeof(note)); | |
828 | stream_putl(s, iptable->unique); | |
829 | stream_putw_at(s, 0, stream_get_endp(s)); | |
830 | ||
831 | zserv_send_message(client, s); | |
832 | } | |
833 | ||
834 | /* Router-id is updated. Send ZEBRA_ROUTER_ID_ADD to client. */ | |
835 | int zsend_router_id_update(struct zserv *client, struct prefix *p, | |
836 | vrf_id_t vrf_id) | |
837 | { | |
838 | int blen; | |
839 | ||
840 | /* Check this client need interface information. */ | |
841 | if (!vrf_bitmap_check(client->ridinfo, vrf_id)) | |
842 | return 0; | |
843 | ||
844 | struct stream *s = stream_new(ZEBRA_MAX_PACKET_SIZ); | |
845 | ||
846 | /* Message type. */ | |
847 | zclient_create_header(s, ZEBRA_ROUTER_ID_UPDATE, vrf_id); | |
848 | ||
849 | /* Prefix information. */ | |
850 | stream_putc(s, p->family); | |
851 | blen = prefix_blen(p); | |
852 | stream_put(s, &p->u.prefix, blen); | |
853 | stream_putc(s, p->prefixlen); | |
854 | ||
855 | /* Write packet size. */ | |
856 | stream_putw_at(s, 0, stream_get_endp(s)); | |
857 | ||
858 | return zserv_send_message(client, s); | |
859 | } | |
860 | ||
861 | /* | |
862 | * Function used by Zebra to send a PW status update to LDP daemon | |
863 | */ | |
864 | int zsend_pw_update(struct zserv *client, struct zebra_pw *pw) | |
865 | { | |
866 | struct stream *s = stream_new(ZEBRA_MAX_PACKET_SIZ); | |
867 | ||
868 | zclient_create_header(s, ZEBRA_PW_STATUS_UPDATE, pw->vrf_id); | |
869 | stream_write(s, pw->ifname, IF_NAMESIZE); | |
870 | stream_putl(s, pw->ifindex); | |
871 | stream_putl(s, pw->status); | |
872 | ||
873 | /* Put length at the first point of the stream. */ | |
874 | stream_putw_at(s, 0, stream_get_endp(s)); | |
875 | ||
876 | return zserv_send_message(client, s); | |
877 | } | |
878 | ||
879 | /* Send response to a get label chunk request to client */ | |
880 | static int zsend_assign_label_chunk_response(struct zserv *client, | |
881 | vrf_id_t vrf_id, | |
882 | struct label_manager_chunk *lmc) | |
883 | { | |
884 | int ret; | |
885 | struct stream *s = stream_new(ZEBRA_MAX_PACKET_SIZ); | |
886 | ||
887 | zclient_create_header(s, ZEBRA_GET_LABEL_CHUNK, vrf_id); | |
888 | ||
889 | if (lmc) { | |
890 | /* proto */ | |
891 | stream_putc(s, lmc->proto); | |
892 | /* instance */ | |
893 | stream_putw(s, lmc->instance); | |
894 | /* keep */ | |
895 | stream_putc(s, lmc->keep); | |
896 | /* start and end labels */ | |
897 | stream_putl(s, lmc->start); | |
898 | stream_putl(s, lmc->end); | |
899 | } | |
900 | ||
901 | /* Write packet size. */ | |
902 | stream_putw_at(s, 0, stream_get_endp(s)); | |
903 | ||
904 | ret = writen(client->sock, s->data, stream_get_endp(s)); | |
905 | stream_free(s); | |
906 | return ret; | |
907 | } | |
908 | ||
909 | /* Send response to a label manager connect request to client */ | |
910 | static int zsend_label_manager_connect_response(struct zserv *client, | |
911 | vrf_id_t vrf_id, | |
912 | unsigned short result) | |
913 | { | |
914 | int ret; | |
915 | struct stream *s = stream_new(ZEBRA_MAX_PACKET_SIZ); | |
916 | ||
917 | zclient_create_header(s, ZEBRA_LABEL_MANAGER_CONNECT, vrf_id); | |
918 | ||
919 | /* proto */ | |
920 | stream_putc(s, client->proto); | |
921 | ||
922 | /* instance */ | |
923 | stream_putw(s, client->instance); | |
924 | ||
925 | /* result */ | |
926 | stream_putc(s, result); | |
927 | ||
928 | /* Write packet size. */ | |
929 | stream_putw_at(s, 0, stream_get_endp(s)); | |
930 | ||
931 | ret = writen(client->sock, s->data, stream_get_endp(s)); | |
932 | stream_free(s); | |
933 | ||
934 | return ret; | |
935 | } | |
936 | ||
937 | /* Send response to a get table chunk request to client */ | |
938 | static int zsend_assign_table_chunk_response(struct zserv *client, | |
939 | vrf_id_t vrf_id, | |
940 | struct table_manager_chunk *tmc) | |
941 | { | |
942 | struct stream *s = stream_new(ZEBRA_MAX_PACKET_SIZ); | |
943 | ||
944 | zclient_create_header(s, ZEBRA_GET_TABLE_CHUNK, vrf_id); | |
945 | ||
946 | if (tmc) { | |
947 | /* start and end labels */ | |
948 | stream_putl(s, tmc->start); | |
949 | stream_putl(s, tmc->end); | |
950 | } | |
951 | ||
952 | /* Write packet size. */ | |
953 | stream_putw_at(s, 0, stream_get_endp(s)); | |
954 | ||
955 | return zserv_send_message(client, s); | |
956 | } | |
957 | ||
958 | static int zsend_table_manager_connect_response(struct zserv *client, | |
959 | vrf_id_t vrf_id, | |
960 | uint16_t result) | |
961 | { | |
962 | struct stream *s = stream_new(ZEBRA_MAX_PACKET_SIZ); | |
963 | ||
964 | zclient_create_header(s, ZEBRA_TABLE_MANAGER_CONNECT, vrf_id); | |
965 | ||
966 | /* result */ | |
967 | stream_putc(s, result); | |
968 | ||
969 | stream_putw_at(s, 0, stream_get_endp(s)); | |
970 | ||
971 | return zserv_send_message(client, s); | |
972 | } | |
973 | ||
974 | /* Inbound message handling ------------------------------------------------ */ | |
975 | ||
976 | int cmd2type[] = { | |
977 | [ZEBRA_NEXTHOP_REGISTER] = RNH_NEXTHOP_TYPE, | |
978 | [ZEBRA_NEXTHOP_UNREGISTER] = RNH_NEXTHOP_TYPE, | |
979 | [ZEBRA_IMPORT_ROUTE_REGISTER] = RNH_IMPORT_CHECK_TYPE, | |
980 | [ZEBRA_IMPORT_ROUTE_UNREGISTER] = RNH_IMPORT_CHECK_TYPE, | |
981 | }; | |
982 | ||
983 | /* Nexthop register */ | |
984 | static void zread_rnh_register(ZAPI_HANDLER_ARGS) | |
985 | { | |
986 | struct rnh *rnh; | |
987 | struct stream *s; | |
988 | struct prefix p; | |
989 | unsigned short l = 0; | |
990 | uint8_t flags = 0; | |
991 | uint16_t type = cmd2type[hdr->command]; | |
992 | ||
993 | if (IS_ZEBRA_DEBUG_NHT) | |
994 | zlog_debug( | |
995 | "rnh_register msg from client %s: hdr->length=%d, type=%s vrf=%u\n", | |
996 | zebra_route_string(client->proto), hdr->length, | |
997 | (type == RNH_NEXTHOP_TYPE) ? "nexthop" : "route", | |
998 | zvrf->vrf->vrf_id); | |
999 | ||
1000 | s = msg; | |
1001 | ||
1002 | client->nh_reg_time = monotime(NULL); | |
1003 | ||
1004 | while (l < hdr->length) { | |
1005 | STREAM_GETC(s, flags); | |
1006 | STREAM_GETW(s, p.family); | |
1007 | STREAM_GETC(s, p.prefixlen); | |
1008 | l += 4; | |
1009 | if (p.family == AF_INET) { | |
1010 | if (p.prefixlen > IPV4_MAX_BITLEN) { | |
1011 | zlog_warn( | |
1012 | "%s: Specified prefix hdr->length %d is too large for a v4 address", | |
1013 | __PRETTY_FUNCTION__, p.prefixlen); | |
1014 | return; | |
1015 | } | |
1016 | STREAM_GET(&p.u.prefix4.s_addr, s, IPV4_MAX_BYTELEN); | |
1017 | l += IPV4_MAX_BYTELEN; | |
1018 | } else if (p.family == AF_INET6) { | |
1019 | if (p.prefixlen > IPV6_MAX_BITLEN) { | |
1020 | zlog_warn( | |
1021 | "%s: Specified prefix hdr->length %d is to large for a v6 address", | |
1022 | __PRETTY_FUNCTION__, p.prefixlen); | |
1023 | return; | |
1024 | } | |
1025 | STREAM_GET(&p.u.prefix6, s, IPV6_MAX_BYTELEN); | |
1026 | l += IPV6_MAX_BYTELEN; | |
1027 | } else { | |
1028 | zlog_err( | |
1029 | "rnh_register: Received unknown family type %d\n", | |
1030 | p.family); | |
1031 | return; | |
1032 | } | |
1033 | rnh = zebra_add_rnh(&p, zvrf_id(zvrf), type); | |
1034 | if (type == RNH_NEXTHOP_TYPE) { | |
1035 | if (flags | |
1036 | && !CHECK_FLAG(rnh->flags, ZEBRA_NHT_CONNECTED)) | |
1037 | SET_FLAG(rnh->flags, ZEBRA_NHT_CONNECTED); | |
1038 | else if (!flags | |
1039 | && CHECK_FLAG(rnh->flags, ZEBRA_NHT_CONNECTED)) | |
1040 | UNSET_FLAG(rnh->flags, ZEBRA_NHT_CONNECTED); | |
1041 | } else if (type == RNH_IMPORT_CHECK_TYPE) { | |
1042 | if (flags | |
1043 | && !CHECK_FLAG(rnh->flags, ZEBRA_NHT_EXACT_MATCH)) | |
1044 | SET_FLAG(rnh->flags, ZEBRA_NHT_EXACT_MATCH); | |
1045 | else if (!flags | |
1046 | && CHECK_FLAG(rnh->flags, | |
1047 | ZEBRA_NHT_EXACT_MATCH)) | |
1048 | UNSET_FLAG(rnh->flags, ZEBRA_NHT_EXACT_MATCH); | |
1049 | } | |
1050 | ||
1051 | zebra_add_rnh_client(rnh, client, type, zvrf_id(zvrf)); | |
1052 | /* Anything not AF_INET/INET6 has been filtered out above */ | |
1053 | zebra_evaluate_rnh(zvrf_id(zvrf), p.family, 1, type, &p); | |
1054 | } | |
1055 | ||
1056 | stream_failure: | |
1057 | return; | |
1058 | } | |
1059 | ||
1060 | /* Nexthop register */ | |
1061 | static void zread_rnh_unregister(ZAPI_HANDLER_ARGS) | |
1062 | { | |
1063 | struct rnh *rnh; | |
1064 | struct stream *s; | |
1065 | struct prefix p; | |
1066 | unsigned short l = 0; | |
1067 | uint16_t type = cmd2type[hdr->command]; | |
1068 | ||
1069 | if (IS_ZEBRA_DEBUG_NHT) | |
1070 | zlog_debug( | |
1071 | "rnh_unregister msg from client %s: hdr->length=%d vrf: %u\n", | |
1072 | zebra_route_string(client->proto), hdr->length, | |
1073 | zvrf->vrf->vrf_id); | |
1074 | ||
1075 | s = msg; | |
1076 | ||
1077 | while (l < hdr->length) { | |
1078 | uint8_t flags; | |
1079 | ||
1080 | STREAM_GETC(s, flags); | |
1081 | if (flags != 0) | |
1082 | goto stream_failure; | |
1083 | ||
1084 | STREAM_GETW(s, p.family); | |
1085 | STREAM_GETC(s, p.prefixlen); | |
1086 | l += 4; | |
1087 | if (p.family == AF_INET) { | |
1088 | if (p.prefixlen > IPV4_MAX_BITLEN) { | |
1089 | zlog_warn( | |
1090 | "%s: Specified prefix hdr->length %d is to large for a v4 address", | |
1091 | __PRETTY_FUNCTION__, p.prefixlen); | |
1092 | return; | |
1093 | } | |
1094 | STREAM_GET(&p.u.prefix4.s_addr, s, IPV4_MAX_BYTELEN); | |
1095 | l += IPV4_MAX_BYTELEN; | |
1096 | } else if (p.family == AF_INET6) { | |
1097 | if (p.prefixlen > IPV6_MAX_BITLEN) { | |
1098 | zlog_warn( | |
1099 | "%s: Specified prefix hdr->length %d is to large for a v6 address", | |
1100 | __PRETTY_FUNCTION__, p.prefixlen); | |
1101 | return; | |
1102 | } | |
1103 | STREAM_GET(&p.u.prefix6, s, IPV6_MAX_BYTELEN); | |
1104 | l += IPV6_MAX_BYTELEN; | |
1105 | } else { | |
1106 | zlog_err( | |
1107 | "rnh_register: Received unknown family type %d\n", | |
1108 | p.family); | |
1109 | return; | |
1110 | } | |
1111 | rnh = zebra_lookup_rnh(&p, zvrf_id(zvrf), type); | |
1112 | if (rnh) { | |
1113 | client->nh_dereg_time = monotime(NULL); | |
1114 | zebra_remove_rnh_client(rnh, client, type); | |
1115 | } | |
1116 | } | |
1117 | stream_failure: | |
1118 | return; | |
1119 | } | |
1120 | ||
1121 | #define ZEBRA_MIN_FEC_LENGTH 5 | |
1122 | ||
1123 | /* FEC register */ | |
1124 | static void zread_fec_register(ZAPI_HANDLER_ARGS) | |
1125 | { | |
1126 | struct stream *s; | |
1127 | unsigned short l = 0; | |
1128 | struct prefix p; | |
1129 | uint16_t flags; | |
1130 | uint32_t label_index = MPLS_INVALID_LABEL_INDEX; | |
1131 | ||
1132 | s = msg; | |
1133 | zvrf = vrf_info_lookup(VRF_DEFAULT); | |
1134 | if (!zvrf) | |
1135 | return; | |
1136 | ||
1137 | /* | |
1138 | * The minimum amount of data that can be sent for one fec | |
1139 | * registration | |
1140 | */ | |
1141 | if (hdr->length < ZEBRA_MIN_FEC_LENGTH) { | |
1142 | zlog_err( | |
1143 | "fec_register: Received a fec register of hdr->length %d, it is of insufficient size to properly decode", | |
1144 | hdr->length); | |
1145 | return; | |
1146 | } | |
1147 | ||
1148 | while (l < hdr->length) { | |
1149 | STREAM_GETW(s, flags); | |
1150 | memset(&p, 0, sizeof(p)); | |
1151 | STREAM_GETW(s, p.family); | |
1152 | if (p.family != AF_INET && p.family != AF_INET6) { | |
1153 | zlog_err( | |
1154 | "fec_register: Received unknown family type %d\n", | |
1155 | p.family); | |
1156 | return; | |
1157 | } | |
1158 | STREAM_GETC(s, p.prefixlen); | |
1159 | if ((p.family == AF_INET && p.prefixlen > IPV4_MAX_BITLEN) | |
1160 | || (p.family == AF_INET6 | |
1161 | && p.prefixlen > IPV6_MAX_BITLEN)) { | |
1162 | zlog_warn( | |
1163 | "%s: Specified prefix hdr->length: %d is to long for %d", | |
1164 | __PRETTY_FUNCTION__, p.prefixlen, p.family); | |
1165 | return; | |
1166 | } | |
1167 | l += 5; | |
1168 | STREAM_GET(&p.u.prefix, s, PSIZE(p.prefixlen)); | |
1169 | l += PSIZE(p.prefixlen); | |
1170 | if (flags & ZEBRA_FEC_REGISTER_LABEL_INDEX) { | |
1171 | STREAM_GETL(s, label_index); | |
1172 | l += 4; | |
1173 | } else | |
1174 | label_index = MPLS_INVALID_LABEL_INDEX; | |
1175 | zebra_mpls_fec_register(zvrf, &p, label_index, client); | |
1176 | } | |
1177 | ||
1178 | stream_failure: | |
1179 | return; | |
1180 | } | |
1181 | ||
1182 | /* FEC unregister */ | |
1183 | static void zread_fec_unregister(ZAPI_HANDLER_ARGS) | |
1184 | { | |
1185 | struct stream *s; | |
1186 | unsigned short l = 0; | |
1187 | struct prefix p; | |
1188 | uint16_t flags; | |
1189 | ||
1190 | s = msg; | |
1191 | zvrf = vrf_info_lookup(VRF_DEFAULT); | |
1192 | if (!zvrf) | |
1193 | return; | |
1194 | ||
1195 | /* | |
1196 | * The minimum amount of data that can be sent for one | |
1197 | * fec unregistration | |
1198 | */ | |
1199 | if (hdr->length < ZEBRA_MIN_FEC_LENGTH) { | |
1200 | zlog_err( | |
1201 | "fec_unregister: Received a fec unregister of hdr->length %d, it is of insufficient size to properly decode", | |
1202 | hdr->length); | |
1203 | return; | |
1204 | } | |
1205 | ||
1206 | while (l < hdr->length) { | |
1207 | STREAM_GETW(s, flags); | |
1208 | if (flags != 0) | |
1209 | goto stream_failure; | |
1210 | ||
1211 | memset(&p, 0, sizeof(p)); | |
1212 | STREAM_GETW(s, p.family); | |
1213 | if (p.family != AF_INET && p.family != AF_INET6) { | |
1214 | zlog_err( | |
1215 | "fec_unregister: Received unknown family type %d\n", | |
1216 | p.family); | |
1217 | return; | |
1218 | } | |
1219 | STREAM_GETC(s, p.prefixlen); | |
1220 | if ((p.family == AF_INET && p.prefixlen > IPV4_MAX_BITLEN) | |
1221 | || (p.family == AF_INET6 | |
1222 | && p.prefixlen > IPV6_MAX_BITLEN)) { | |
1223 | zlog_warn( | |
1224 | "%s: Received prefix hdr->length %d which is greater than %d can support", | |
1225 | __PRETTY_FUNCTION__, p.prefixlen, p.family); | |
1226 | return; | |
1227 | } | |
1228 | l += 5; | |
1229 | STREAM_GET(&p.u.prefix, s, PSIZE(p.prefixlen)); | |
1230 | l += PSIZE(p.prefixlen); | |
1231 | zebra_mpls_fec_unregister(zvrf, &p, client); | |
1232 | } | |
1233 | ||
1234 | stream_failure: | |
1235 | return; | |
1236 | } | |
1237 | ||
1238 | ||
1239 | /* | |
1240 | * Register zebra server interface information. | |
1241 | * Send current all interface and address information. | |
1242 | */ | |
1243 | static void zread_interface_add(ZAPI_HANDLER_ARGS) | |
1244 | { | |
1245 | struct vrf *vrf; | |
1246 | struct interface *ifp; | |
1247 | ||
1248 | /* Interface information is needed. */ | |
1249 | vrf_bitmap_set(client->ifinfo, zvrf_id(zvrf)); | |
1250 | ||
1251 | RB_FOREACH (vrf, vrf_id_head, &vrfs_by_id) { | |
1252 | FOR_ALL_INTERFACES (vrf, ifp) { | |
1253 | /* Skip pseudo interface. */ | |
1254 | if (!CHECK_FLAG(ifp->status, ZEBRA_INTERFACE_ACTIVE)) | |
1255 | continue; | |
1256 | ||
1257 | zsend_interface_add(client, ifp); | |
1258 | zsend_interface_addresses(client, ifp); | |
1259 | } | |
1260 | } | |
1261 | } | |
1262 | ||
1263 | /* Unregister zebra server interface information. */ | |
1264 | static void zread_interface_delete(ZAPI_HANDLER_ARGS) | |
1265 | { | |
1266 | vrf_bitmap_unset(client->ifinfo, zvrf_id(zvrf)); | |
1267 | } | |
1268 | ||
1269 | void zserv_nexthop_num_warn(const char *caller, const struct prefix *p, | |
1270 | const unsigned int nexthop_num) | |
1271 | { | |
1272 | if (nexthop_num > multipath_num) { | |
1273 | char buff[PREFIX2STR_BUFFER]; | |
1274 | ||
1275 | prefix2str(p, buff, sizeof(buff)); | |
1276 | zlog_warn( | |
1277 | "%s: Prefix %s has %d nexthops, but we can only use the first %d", | |
1278 | caller, buff, nexthop_num, multipath_num); | |
1279 | } | |
1280 | } | |
1281 | ||
1282 | static void zread_route_add(ZAPI_HANDLER_ARGS) | |
1283 | { | |
1284 | struct stream *s; | |
1285 | struct zapi_route api; | |
1286 | struct zapi_nexthop *api_nh; | |
1287 | afi_t afi; | |
1288 | struct prefix_ipv6 *src_p = NULL; | |
1289 | struct route_entry *re; | |
1290 | struct nexthop *nexthop = NULL; | |
1291 | int i, ret; | |
1292 | vrf_id_t vrf_id = 0; | |
1293 | struct ipaddr vtep_ip; | |
1294 | ||
1295 | s = msg; | |
1296 | if (zapi_route_decode(s, &api) < 0) { | |
1297 | if (IS_ZEBRA_DEBUG_RECV) | |
1298 | zlog_debug("%s: Unable to decode zapi_route sent", | |
1299 | __PRETTY_FUNCTION__); | |
1300 | return; | |
1301 | } | |
1302 | ||
1303 | if (IS_ZEBRA_DEBUG_RECV) { | |
1304 | char buf_prefix[PREFIX_STRLEN]; | |
1305 | ||
1306 | prefix2str(&api.prefix, buf_prefix, sizeof(buf_prefix)); | |
1307 | zlog_debug("%s: p=%s, ZAPI_MESSAGE_LABEL: %sset, flags=0x%x", | |
1308 | __func__, buf_prefix, | |
1309 | (CHECK_FLAG(api.message, ZAPI_MESSAGE_LABEL) ? "" | |
1310 | : "un"), | |
1311 | api.flags); | |
1312 | } | |
1313 | ||
1314 | /* Allocate new route. */ | |
1315 | vrf_id = zvrf_id(zvrf); | |
1316 | re = XCALLOC(MTYPE_RE, sizeof(struct route_entry)); | |
1317 | re->type = api.type; | |
1318 | re->instance = api.instance; | |
1319 | re->flags = api.flags; | |
1320 | re->uptime = time(NULL); | |
1321 | re->vrf_id = vrf_id; | |
1322 | if (api.tableid && vrf_id == VRF_DEFAULT) | |
1323 | re->table = api.tableid; | |
1324 | else | |
1325 | re->table = zvrf->table_id; | |
1326 | ||
1327 | /* | |
1328 | * TBD should _all_ of the nexthop add operations use | |
1329 | * api_nh->vrf_id instead of re->vrf_id ? I only changed | |
1330 | * for cases NEXTHOP_TYPE_IPV4 and NEXTHOP_TYPE_IPV6. | |
1331 | */ | |
1332 | if (CHECK_FLAG(api.message, ZAPI_MESSAGE_NEXTHOP)) | |
1333 | for (i = 0; i < api.nexthop_num; i++) { | |
1334 | api_nh = &api.nexthops[i]; | |
1335 | ifindex_t ifindex = 0; | |
1336 | ||
1337 | if (IS_ZEBRA_DEBUG_RECV) | |
1338 | zlog_debug("nh type %d", api_nh->type); | |
1339 | ||
1340 | switch (api_nh->type) { | |
1341 | case NEXTHOP_TYPE_IFINDEX: | |
1342 | nexthop = route_entry_nexthop_ifindex_add( | |
1343 | re, api_nh->ifindex, api_nh->vrf_id); | |
1344 | break; | |
1345 | case NEXTHOP_TYPE_IPV4: | |
1346 | if (IS_ZEBRA_DEBUG_RECV) { | |
1347 | char nhbuf[INET6_ADDRSTRLEN] = {0}; | |
1348 | ||
1349 | inet_ntop(AF_INET, &api_nh->gate.ipv4, | |
1350 | nhbuf, INET6_ADDRSTRLEN); | |
1351 | zlog_debug("%s: nh=%s, vrf_id=%d", | |
1352 | __func__, nhbuf, | |
1353 | api_nh->vrf_id); | |
1354 | } | |
1355 | nexthop = route_entry_nexthop_ipv4_add( | |
1356 | re, &api_nh->gate.ipv4, NULL, | |
1357 | api_nh->vrf_id); | |
1358 | break; | |
1359 | case NEXTHOP_TYPE_IPV4_IFINDEX: | |
1360 | ||
1361 | memset(&vtep_ip, 0, sizeof(struct ipaddr)); | |
1362 | if (CHECK_FLAG(api.flags, | |
1363 | ZEBRA_FLAG_EVPN_ROUTE)) { | |
1364 | ifindex = get_l3vni_svi_ifindex(vrf_id); | |
1365 | } else { | |
1366 | ifindex = api_nh->ifindex; | |
1367 | } | |
1368 | ||
1369 | if (IS_ZEBRA_DEBUG_RECV) { | |
1370 | char nhbuf[INET6_ADDRSTRLEN] = {0}; | |
1371 | ||
1372 | inet_ntop(AF_INET, &api_nh->gate.ipv4, | |
1373 | nhbuf, INET6_ADDRSTRLEN); | |
1374 | zlog_debug( | |
1375 | "%s: nh=%s, vrf_id=%d (re->vrf_id=%d), ifindex=%d", | |
1376 | __func__, nhbuf, api_nh->vrf_id, | |
1377 | re->vrf_id, ifindex); | |
1378 | } | |
1379 | nexthop = route_entry_nexthop_ipv4_ifindex_add( | |
1380 | re, &api_nh->gate.ipv4, NULL, ifindex, | |
1381 | api_nh->vrf_id); | |
1382 | ||
1383 | /* if this an EVPN route entry, | |
1384 | * program the nh as neigh | |
1385 | */ | |
1386 | if (CHECK_FLAG(api.flags, | |
1387 | ZEBRA_FLAG_EVPN_ROUTE)) { | |
1388 | SET_FLAG(nexthop->flags, | |
1389 | NEXTHOP_FLAG_EVPN_RVTEP); | |
1390 | vtep_ip.ipa_type = IPADDR_V4; | |
1391 | memcpy(&(vtep_ip.ipaddr_v4), | |
1392 | &(api_nh->gate.ipv4), | |
1393 | sizeof(struct in_addr)); | |
1394 | zebra_vxlan_evpn_vrf_route_add( | |
1395 | vrf_id, &api_nh->rmac, &vtep_ip, | |
1396 | &api.prefix); | |
1397 | } | |
1398 | break; | |
1399 | case NEXTHOP_TYPE_IPV6: | |
1400 | nexthop = route_entry_nexthop_ipv6_add( | |
1401 | re, &api_nh->gate.ipv6, api_nh->vrf_id); | |
1402 | break; | |
1403 | case NEXTHOP_TYPE_IPV6_IFINDEX: | |
1404 | memset(&vtep_ip, 0, sizeof(struct ipaddr)); | |
1405 | if (CHECK_FLAG(api.flags, | |
1406 | ZEBRA_FLAG_EVPN_ROUTE)) { | |
1407 | ifindex = get_l3vni_svi_ifindex(vrf_id); | |
1408 | } else { | |
1409 | ifindex = api_nh->ifindex; | |
1410 | } | |
1411 | ||
1412 | nexthop = route_entry_nexthop_ipv6_ifindex_add( | |
1413 | re, &api_nh->gate.ipv6, ifindex, | |
1414 | api_nh->vrf_id); | |
1415 | ||
1416 | /* if this an EVPN route entry, | |
1417 | * program the nh as neigh | |
1418 | */ | |
1419 | if (CHECK_FLAG(api.flags, | |
1420 | ZEBRA_FLAG_EVPN_ROUTE)) { | |
1421 | SET_FLAG(nexthop->flags, | |
1422 | NEXTHOP_FLAG_EVPN_RVTEP); | |
1423 | vtep_ip.ipa_type = IPADDR_V6; | |
1424 | memcpy(&vtep_ip.ipaddr_v6, | |
1425 | &(api_nh->gate.ipv6), | |
1426 | sizeof(struct in6_addr)); | |
1427 | zebra_vxlan_evpn_vrf_route_add( | |
1428 | vrf_id, &api_nh->rmac, &vtep_ip, | |
1429 | &api.prefix); | |
1430 | } | |
1431 | break; | |
1432 | case NEXTHOP_TYPE_BLACKHOLE: | |
1433 | nexthop = route_entry_nexthop_blackhole_add( | |
1434 | re, api_nh->bh_type); | |
1435 | break; | |
1436 | } | |
1437 | ||
1438 | if (!nexthop) { | |
1439 | zlog_warn( | |
1440 | "%s: Nexthops Specified: %d but we failed to properly create one", | |
1441 | __PRETTY_FUNCTION__, api.nexthop_num); | |
1442 | nexthops_free(re->ng.nexthop); | |
1443 | XFREE(MTYPE_RE, re); | |
1444 | return; | |
1445 | } | |
1446 | /* MPLS labels for BGP-LU or Segment Routing */ | |
1447 | if (CHECK_FLAG(api.message, ZAPI_MESSAGE_LABEL) | |
1448 | && api_nh->type != NEXTHOP_TYPE_IFINDEX | |
1449 | && api_nh->type != NEXTHOP_TYPE_BLACKHOLE) { | |
1450 | enum lsp_types_t label_type; | |
1451 | ||
1452 | label_type = | |
1453 | lsp_type_from_re_type(client->proto); | |
1454 | ||
1455 | if (IS_ZEBRA_DEBUG_RECV) { | |
1456 | zlog_debug( | |
1457 | "%s: adding %d labels of type %d (1st=%u)", | |
1458 | __func__, api_nh->label_num, | |
1459 | label_type, api_nh->labels[0]); | |
1460 | } | |
1461 | ||
1462 | nexthop_add_labels(nexthop, label_type, | |
1463 | api_nh->label_num, | |
1464 | &api_nh->labels[0]); | |
1465 | } | |
1466 | } | |
1467 | ||
1468 | if (CHECK_FLAG(api.message, ZAPI_MESSAGE_DISTANCE)) | |
1469 | re->distance = api.distance; | |
1470 | if (CHECK_FLAG(api.message, ZAPI_MESSAGE_METRIC)) | |
1471 | re->metric = api.metric; | |
1472 | if (CHECK_FLAG(api.message, ZAPI_MESSAGE_TAG)) | |
1473 | re->tag = api.tag; | |
1474 | if (CHECK_FLAG(api.message, ZAPI_MESSAGE_MTU)) | |
1475 | re->mtu = api.mtu; | |
1476 | ||
1477 | afi = family2afi(api.prefix.family); | |
1478 | if (afi != AFI_IP6 && CHECK_FLAG(api.message, ZAPI_MESSAGE_SRCPFX)) { | |
1479 | zlog_warn("%s: Received SRC Prefix but afi is not v6", | |
1480 | __PRETTY_FUNCTION__); | |
1481 | nexthops_free(re->ng.nexthop); | |
1482 | XFREE(MTYPE_RE, re); | |
1483 | return; | |
1484 | } | |
1485 | if (CHECK_FLAG(api.message, ZAPI_MESSAGE_SRCPFX)) | |
1486 | src_p = &api.src_prefix; | |
1487 | ||
1488 | ret = rib_add_multipath(afi, api.safi, &api.prefix, src_p, re); | |
1489 | ||
1490 | /* Stats */ | |
1491 | switch (api.prefix.family) { | |
1492 | case AF_INET: | |
1493 | if (ret > 0) | |
1494 | client->v4_route_add_cnt++; | |
1495 | else if (ret < 0) | |
1496 | client->v4_route_upd8_cnt++; | |
1497 | break; | |
1498 | case AF_INET6: | |
1499 | if (ret > 0) | |
1500 | client->v6_route_add_cnt++; | |
1501 | else if (ret < 0) | |
1502 | client->v6_route_upd8_cnt++; | |
1503 | break; | |
1504 | } | |
1505 | } | |
1506 | ||
1507 | static void zread_route_del(ZAPI_HANDLER_ARGS) | |
1508 | { | |
1509 | struct stream *s; | |
1510 | struct zapi_route api; | |
1511 | afi_t afi; | |
1512 | struct prefix_ipv6 *src_p = NULL; | |
1513 | uint32_t table_id; | |
1514 | ||
1515 | s = msg; | |
1516 | if (zapi_route_decode(s, &api) < 0) | |
1517 | return; | |
1518 | ||
1519 | afi = family2afi(api.prefix.family); | |
1520 | if (afi != AFI_IP6 && CHECK_FLAG(api.message, ZAPI_MESSAGE_SRCPFX)) { | |
1521 | zlog_warn("%s: Received a src prefix while afi is not v6", | |
1522 | __PRETTY_FUNCTION__); | |
1523 | return; | |
1524 | } | |
1525 | if (CHECK_FLAG(api.message, ZAPI_MESSAGE_SRCPFX)) | |
1526 | src_p = &api.src_prefix; | |
1527 | ||
1528 | if (api.vrf_id == VRF_DEFAULT && api.tableid != 0) | |
1529 | table_id = api.tableid; | |
1530 | else | |
1531 | table_id = zvrf->table_id; | |
1532 | ||
1533 | rib_delete(afi, api.safi, zvrf_id(zvrf), api.type, api.instance, | |
1534 | api.flags, &api.prefix, src_p, NULL, table_id, api.metric, | |
1535 | false); | |
1536 | ||
1537 | /* Stats */ | |
1538 | switch (api.prefix.family) { | |
1539 | case AF_INET: | |
1540 | client->v4_route_del_cnt++; | |
1541 | break; | |
1542 | case AF_INET6: | |
1543 | client->v6_route_del_cnt++; | |
1544 | break; | |
1545 | } | |
1546 | } | |
1547 | ||
1548 | /* This function support multiple nexthop. */ | |
1549 | /* | |
1550 | * Parse the ZEBRA_IPV4_ROUTE_ADD sent from client. Update re and | |
1551 | * add kernel route. | |
1552 | */ | |
1553 | static void zread_ipv4_add(ZAPI_HANDLER_ARGS) | |
1554 | { | |
1555 | int i; | |
1556 | struct route_entry *re; | |
1557 | struct prefix p; | |
1558 | uint8_t message; | |
1559 | struct in_addr nhop_addr; | |
1560 | uint8_t nexthop_num; | |
1561 | uint8_t nexthop_type; | |
1562 | struct stream *s; | |
1563 | ifindex_t ifindex; | |
1564 | safi_t safi; | |
1565 | int ret; | |
1566 | enum lsp_types_t label_type = ZEBRA_LSP_NONE; | |
1567 | mpls_label_t label; | |
1568 | struct nexthop *nexthop; | |
1569 | enum blackhole_type bh_type = BLACKHOLE_NULL; | |
1570 | ||
1571 | /* Get input stream. */ | |
1572 | s = msg; | |
1573 | ||
1574 | /* Allocate new re. */ | |
1575 | re = XCALLOC(MTYPE_RE, sizeof(struct route_entry)); | |
1576 | ||
1577 | /* Type, flags, message. */ | |
1578 | STREAM_GETC(s, re->type); | |
1579 | if (re->type > ZEBRA_ROUTE_MAX) { | |
1580 | zlog_warn("%s: Specified route type %d is not a legal value\n", | |
1581 | __PRETTY_FUNCTION__, re->type); | |
1582 | XFREE(MTYPE_RE, re); | |
1583 | return; | |
1584 | } | |
1585 | STREAM_GETW(s, re->instance); | |
1586 | STREAM_GETL(s, re->flags); | |
1587 | STREAM_GETC(s, message); | |
1588 | STREAM_GETW(s, safi); | |
1589 | re->uptime = time(NULL); | |
1590 | ||
1591 | /* IPv4 prefix. */ | |
1592 | memset(&p, 0, sizeof(struct prefix_ipv4)); | |
1593 | p.family = AF_INET; | |
1594 | STREAM_GETC(s, p.prefixlen); | |
1595 | if (p.prefixlen > IPV4_MAX_BITLEN) { | |
1596 | zlog_warn( | |
1597 | "%s: Specified prefix length %d is greater than what v4 can be", | |
1598 | __PRETTY_FUNCTION__, p.prefixlen); | |
1599 | XFREE(MTYPE_RE, re); | |
1600 | return; | |
1601 | } | |
1602 | STREAM_GET(&p.u.prefix4, s, PSIZE(p.prefixlen)); | |
1603 | ||
1604 | /* VRF ID */ | |
1605 | re->vrf_id = zvrf_id(zvrf); | |
1606 | ||
1607 | /* Nexthop parse. */ | |
1608 | if (CHECK_FLAG(message, ZAPI_MESSAGE_NEXTHOP)) { | |
1609 | STREAM_GETC(s, nexthop_num); | |
1610 | zserv_nexthop_num_warn(__func__, (const struct prefix *)&p, | |
1611 | nexthop_num); | |
1612 | ||
1613 | if (CHECK_FLAG(message, ZAPI_MESSAGE_LABEL)) | |
1614 | label_type = lsp_type_from_re_type(client->proto); | |
1615 | ||
1616 | for (i = 0; i < nexthop_num; i++) { | |
1617 | STREAM_GETC(s, nexthop_type); | |
1618 | ||
1619 | switch (nexthop_type) { | |
1620 | case NEXTHOP_TYPE_IFINDEX: | |
1621 | STREAM_GETL(s, ifindex); | |
1622 | route_entry_nexthop_ifindex_add(re, ifindex, | |
1623 | re->vrf_id); | |
1624 | break; | |
1625 | case NEXTHOP_TYPE_IPV4: | |
1626 | STREAM_GET(&nhop_addr.s_addr, s, | |
1627 | IPV4_MAX_BYTELEN); | |
1628 | nexthop = route_entry_nexthop_ipv4_add( | |
1629 | re, &nhop_addr, NULL, re->vrf_id); | |
1630 | /* | |
1631 | * For labeled-unicast, each nexthop is followed | |
1632 | * by the label. | |
1633 | */ | |
1634 | if (CHECK_FLAG(message, ZAPI_MESSAGE_LABEL)) { | |
1635 | STREAM_GETL(s, label); | |
1636 | nexthop_add_labels(nexthop, label_type, | |
1637 | 1, &label); | |
1638 | } | |
1639 | break; | |
1640 | case NEXTHOP_TYPE_IPV4_IFINDEX: | |
1641 | STREAM_GET(&nhop_addr.s_addr, s, | |
1642 | IPV4_MAX_BYTELEN); | |
1643 | STREAM_GETL(s, ifindex); | |
1644 | route_entry_nexthop_ipv4_ifindex_add( | |
1645 | re, &nhop_addr, NULL, ifindex, | |
1646 | re->vrf_id); | |
1647 | break; | |
1648 | case NEXTHOP_TYPE_IPV6: | |
1649 | zlog_warn( | |
1650 | "%s: Please use ZEBRA_ROUTE_ADD if you want to pass v6 nexthops", | |
1651 | __PRETTY_FUNCTION__); | |
1652 | nexthops_free(re->ng.nexthop); | |
1653 | XFREE(MTYPE_RE, re); | |
1654 | return; | |
1655 | case NEXTHOP_TYPE_BLACKHOLE: | |
1656 | route_entry_nexthop_blackhole_add(re, bh_type); | |
1657 | break; | |
1658 | default: | |
1659 | zlog_warn( | |
1660 | "%s: Specified nexthop type: %d does not exist", | |
1661 | __PRETTY_FUNCTION__, nexthop_type); | |
1662 | nexthops_free(re->ng.nexthop); | |
1663 | XFREE(MTYPE_RE, re); | |
1664 | return; | |
1665 | } | |
1666 | } | |
1667 | } | |
1668 | ||
1669 | /* Distance. */ | |
1670 | if (CHECK_FLAG(message, ZAPI_MESSAGE_DISTANCE)) | |
1671 | STREAM_GETC(s, re->distance); | |
1672 | ||
1673 | /* Metric. */ | |
1674 | if (CHECK_FLAG(message, ZAPI_MESSAGE_METRIC)) | |
1675 | STREAM_GETL(s, re->metric); | |
1676 | ||
1677 | /* Tag */ | |
1678 | if (CHECK_FLAG(message, ZAPI_MESSAGE_TAG)) | |
1679 | STREAM_GETL(s, re->tag); | |
1680 | else | |
1681 | re->tag = 0; | |
1682 | ||
1683 | if (CHECK_FLAG(message, ZAPI_MESSAGE_MTU)) | |
1684 | STREAM_GETL(s, re->mtu); | |
1685 | else | |
1686 | re->mtu = 0; | |
1687 | ||
1688 | /* Table */ | |
1689 | re->table = zvrf->table_id; | |
1690 | ||
1691 | ret = rib_add_multipath(AFI_IP, safi, &p, NULL, re); | |
1692 | ||
1693 | /* Stats */ | |
1694 | if (ret > 0) | |
1695 | client->v4_route_add_cnt++; | |
1696 | else if (ret < 0) | |
1697 | client->v4_route_upd8_cnt++; | |
1698 | ||
1699 | return; | |
1700 | ||
1701 | stream_failure: | |
1702 | nexthops_free(re->ng.nexthop); | |
1703 | XFREE(MTYPE_RE, re); | |
1704 | } | |
1705 | ||
1706 | /* Zebra server IPv4 prefix delete function. */ | |
1707 | static void zread_ipv4_delete(ZAPI_HANDLER_ARGS) | |
1708 | { | |
1709 | struct stream *s; | |
1710 | struct zapi_ipv4 api; | |
1711 | struct prefix p; | |
1712 | uint32_t table_id; | |
1713 | ||
1714 | s = msg; | |
1715 | ||
1716 | /* Type, flags, message. */ | |
1717 | STREAM_GETC(s, api.type); | |
1718 | STREAM_GETW(s, api.instance); | |
1719 | STREAM_GETL(s, api.flags); | |
1720 | STREAM_GETC(s, api.message); | |
1721 | STREAM_GETW(s, api.safi); | |
1722 | ||
1723 | /* IPv4 prefix. */ | |
1724 | memset(&p, 0, sizeof(struct prefix)); | |
1725 | p.family = AF_INET; | |
1726 | STREAM_GETC(s, p.prefixlen); | |
1727 | if (p.prefixlen > IPV4_MAX_BITLEN) { | |
1728 | zlog_warn("%s: Passed in prefixlen %d is impossible", | |
1729 | __PRETTY_FUNCTION__, p.prefixlen); | |
1730 | return; | |
1731 | } | |
1732 | STREAM_GET(&p.u.prefix4, s, PSIZE(p.prefixlen)); | |
1733 | ||
1734 | table_id = zvrf->table_id; | |
1735 | ||
1736 | rib_delete(AFI_IP, api.safi, zvrf_id(zvrf), api.type, api.instance, | |
1737 | api.flags, &p, NULL, NULL, table_id, 0, false); | |
1738 | client->v4_route_del_cnt++; | |
1739 | ||
1740 | stream_failure: | |
1741 | return; | |
1742 | } | |
1743 | ||
1744 | /* MRIB Nexthop lookup for IPv4. */ | |
1745 | static void zread_ipv4_nexthop_lookup_mrib(ZAPI_HANDLER_ARGS) | |
1746 | { | |
1747 | struct in_addr addr; | |
1748 | struct route_entry *re; | |
1749 | ||
1750 | STREAM_GET(&addr.s_addr, msg, IPV4_MAX_BYTELEN); | |
1751 | re = rib_match_ipv4_multicast(zvrf_id(zvrf), addr, NULL); | |
1752 | zsend_ipv4_nexthop_lookup_mrib(client, addr, re, zvrf); | |
1753 | ||
1754 | stream_failure: | |
1755 | return; | |
1756 | } | |
1757 | ||
1758 | /* Zebra server IPv6 prefix add function. */ | |
1759 | static void zread_ipv4_route_ipv6_nexthop_add(ZAPI_HANDLER_ARGS) | |
1760 | { | |
1761 | unsigned int i; | |
1762 | struct stream *s; | |
1763 | struct in6_addr nhop_addr; | |
1764 | struct route_entry *re; | |
1765 | uint8_t message; | |
1766 | uint8_t nexthop_num; | |
1767 | uint8_t nexthop_type; | |
1768 | struct prefix p; | |
1769 | safi_t safi; | |
1770 | static struct in6_addr nexthops[MULTIPATH_NUM]; | |
1771 | static unsigned int ifindices[MULTIPATH_NUM]; | |
1772 | int ret; | |
1773 | static mpls_label_t labels[MULTIPATH_NUM]; | |
1774 | enum lsp_types_t label_type = ZEBRA_LSP_NONE; | |
1775 | mpls_label_t label; | |
1776 | struct nexthop *nexthop; | |
1777 | enum blackhole_type bh_type = BLACKHOLE_NULL; | |
1778 | ||
1779 | /* Get input stream. */ | |
1780 | s = msg; | |
1781 | ||
1782 | memset(&nhop_addr, 0, sizeof(struct in6_addr)); | |
1783 | ||
1784 | /* Allocate new re. */ | |
1785 | re = XCALLOC(MTYPE_RE, sizeof(struct route_entry)); | |
1786 | ||
1787 | /* Type, flags, message. */ | |
1788 | STREAM_GETC(s, re->type); | |
1789 | if (re->type > ZEBRA_ROUTE_MAX) { | |
1790 | zlog_warn("%s: Specified route type: %d is not a legal value\n", | |
1791 | __PRETTY_FUNCTION__, re->type); | |
1792 | XFREE(MTYPE_RE, re); | |
1793 | return; | |
1794 | } | |
1795 | STREAM_GETW(s, re->instance); | |
1796 | STREAM_GETL(s, re->flags); | |
1797 | STREAM_GETC(s, message); | |
1798 | STREAM_GETW(s, safi); | |
1799 | re->uptime = time(NULL); | |
1800 | ||
1801 | /* IPv4 prefix. */ | |
1802 | memset(&p, 0, sizeof(struct prefix_ipv4)); | |
1803 | p.family = AF_INET; | |
1804 | STREAM_GETC(s, p.prefixlen); | |
1805 | if (p.prefixlen > IPV4_MAX_BITLEN) { | |
1806 | zlog_warn( | |
1807 | "%s: Prefix Length %d is greater than what a v4 address can use", | |
1808 | __PRETTY_FUNCTION__, p.prefixlen); | |
1809 | XFREE(MTYPE_RE, re); | |
1810 | return; | |
1811 | } | |
1812 | STREAM_GET(&p.u.prefix4, s, PSIZE(p.prefixlen)); | |
1813 | ||
1814 | /* VRF ID */ | |
1815 | re->vrf_id = zvrf_id(zvrf); | |
1816 | ||
1817 | /* | |
1818 | * We need to give nh-addr, nh-ifindex with the same next-hop object | |
1819 | * to the re to ensure that IPv6 multipathing works; need to coalesce | |
1820 | * these. Clients should send the same number of paired set of | |
1821 | * next-hop-addr/next-hop-ifindices. | |
1822 | */ | |
1823 | if (CHECK_FLAG(message, ZAPI_MESSAGE_NEXTHOP)) { | |
1824 | unsigned int nh_count = 0; | |
1825 | unsigned int if_count = 0; | |
1826 | unsigned int max_nh_if = 0; | |
1827 | ||
1828 | STREAM_GETC(s, nexthop_num); | |
1829 | zserv_nexthop_num_warn(__func__, (const struct prefix *)&p, | |
1830 | nexthop_num); | |
1831 | ||
1832 | if (CHECK_FLAG(message, ZAPI_MESSAGE_LABEL)) | |
1833 | label_type = lsp_type_from_re_type(client->proto); | |
1834 | ||
1835 | for (i = 0; i < nexthop_num; i++) { | |
1836 | STREAM_GETC(s, nexthop_type); | |
1837 | ||
1838 | switch (nexthop_type) { | |
1839 | case NEXTHOP_TYPE_IPV6: | |
1840 | STREAM_GET(&nhop_addr, s, 16); | |
1841 | if (nh_count < MULTIPATH_NUM) { | |
1842 | /* | |
1843 | * For labeled-unicast, each nexthop is | |
1844 | * followed by the label. | |
1845 | */ | |
1846 | if (CHECK_FLAG(message, | |
1847 | ZAPI_MESSAGE_LABEL)) { | |
1848 | STREAM_GETL(s, label); | |
1849 | labels[nh_count] = label; | |
1850 | } | |
1851 | nexthops[nh_count] = nhop_addr; | |
1852 | nh_count++; | |
1853 | } | |
1854 | break; | |
1855 | case NEXTHOP_TYPE_IFINDEX: | |
1856 | if (if_count < multipath_num) | |
1857 | STREAM_GETL(s, ifindices[if_count++]); | |
1858 | break; | |
1859 | case NEXTHOP_TYPE_BLACKHOLE: | |
1860 | route_entry_nexthop_blackhole_add(re, bh_type); | |
1861 | break; | |
1862 | default: | |
1863 | zlog_warn( | |
1864 | "%s: Please use ZEBRA_ROUTE_ADD if you want to pass non v6 nexthops", | |
1865 | __PRETTY_FUNCTION__); | |
1866 | nexthops_free(re->ng.nexthop); | |
1867 | XFREE(MTYPE_RE, re); | |
1868 | return; | |
1869 | } | |
1870 | } | |
1871 | ||
1872 | max_nh_if = (nh_count > if_count) ? nh_count : if_count; | |
1873 | for (i = 0; i < max_nh_if; i++) { | |
1874 | if ((i < nh_count) | |
1875 | && !IN6_IS_ADDR_UNSPECIFIED(&nexthops[i])) { | |
1876 | if ((i < if_count) && ifindices[i]) | |
1877 | nexthop = | |
1878 | route_entry_nexthop_ipv6_ifindex_add( | |
1879 | re, &nexthops[i], | |
1880 | ifindices[i], | |
1881 | re->vrf_id); | |
1882 | else | |
1883 | nexthop = route_entry_nexthop_ipv6_add( | |
1884 | re, &nexthops[i], re->vrf_id); | |
1885 | ||
1886 | if (CHECK_FLAG(message, ZAPI_MESSAGE_LABEL)) | |
1887 | nexthop_add_labels(nexthop, label_type, | |
1888 | 1, &labels[i]); | |
1889 | } else { | |
1890 | if ((i < if_count) && ifindices[i]) | |
1891 | route_entry_nexthop_ifindex_add( | |
1892 | re, ifindices[i], re->vrf_id); | |
1893 | } | |
1894 | } | |
1895 | } | |
1896 | ||
1897 | /* Distance. */ | |
1898 | if (CHECK_FLAG(message, ZAPI_MESSAGE_DISTANCE)) | |
1899 | STREAM_GETC(s, re->distance); | |
1900 | ||
1901 | /* Metric. */ | |
1902 | if (CHECK_FLAG(message, ZAPI_MESSAGE_METRIC)) | |
1903 | STREAM_GETL(s, re->metric); | |
1904 | ||
1905 | /* Tag */ | |
1906 | if (CHECK_FLAG(message, ZAPI_MESSAGE_TAG)) | |
1907 | STREAM_GETL(s, re->tag); | |
1908 | else | |
1909 | re->tag = 0; | |
1910 | ||
1911 | if (CHECK_FLAG(message, ZAPI_MESSAGE_MTU)) | |
1912 | STREAM_GETL(s, re->mtu); | |
1913 | else | |
1914 | re->mtu = 0; | |
1915 | ||
1916 | /* Table */ | |
1917 | re->table = zvrf->table_id; | |
1918 | ||
1919 | ret = rib_add_multipath(AFI_IP6, safi, &p, NULL, re); | |
1920 | /* Stats */ | |
1921 | if (ret > 0) | |
1922 | client->v4_route_add_cnt++; | |
1923 | else if (ret < 0) | |
1924 | client->v4_route_upd8_cnt++; | |
1925 | ||
1926 | return; | |
1927 | ||
1928 | stream_failure: | |
1929 | nexthops_free(re->ng.nexthop); | |
1930 | XFREE(MTYPE_RE, re); | |
1931 | } | |
1932 | ||
1933 | static void zread_ipv6_add(ZAPI_HANDLER_ARGS) | |
1934 | { | |
1935 | unsigned int i; | |
1936 | struct stream *s; | |
1937 | struct in6_addr nhop_addr; | |
1938 | ifindex_t ifindex; | |
1939 | struct route_entry *re; | |
1940 | uint8_t message; | |
1941 | uint8_t nexthop_num; | |
1942 | uint8_t nexthop_type; | |
1943 | struct prefix p; | |
1944 | struct prefix_ipv6 src_p, *src_pp; | |
1945 | safi_t safi; | |
1946 | static struct in6_addr nexthops[MULTIPATH_NUM]; | |
1947 | static unsigned int ifindices[MULTIPATH_NUM]; | |
1948 | int ret; | |
1949 | static mpls_label_t labels[MULTIPATH_NUM]; | |
1950 | enum lsp_types_t label_type = ZEBRA_LSP_NONE; | |
1951 | mpls_label_t label; | |
1952 | struct nexthop *nexthop; | |
1953 | enum blackhole_type bh_type = BLACKHOLE_NULL; | |
1954 | ||
1955 | /* Get input stream. */ | |
1956 | s = msg; | |
1957 | ||
1958 | memset(&nhop_addr, 0, sizeof(struct in6_addr)); | |
1959 | ||
1960 | /* Allocate new re. */ | |
1961 | re = XCALLOC(MTYPE_RE, sizeof(struct route_entry)); | |
1962 | ||
1963 | /* Type, flags, message. */ | |
1964 | STREAM_GETC(s, re->type); | |
1965 | if (re->type > ZEBRA_ROUTE_MAX) { | |
1966 | zlog_warn("%s: Specified route type: %d is not a legal value\n", | |
1967 | __PRETTY_FUNCTION__, re->type); | |
1968 | XFREE(MTYPE_RE, re); | |
1969 | return; | |
1970 | } | |
1971 | STREAM_GETW(s, re->instance); | |
1972 | STREAM_GETL(s, re->flags); | |
1973 | STREAM_GETC(s, message); | |
1974 | STREAM_GETW(s, safi); | |
1975 | re->uptime = time(NULL); | |
1976 | ||
1977 | /* IPv6 prefix. */ | |
1978 | memset(&p, 0, sizeof(p)); | |
1979 | p.family = AF_INET6; | |
1980 | STREAM_GETC(s, p.prefixlen); | |
1981 | if (p.prefixlen > IPV6_MAX_BITLEN) { | |
1982 | zlog_warn( | |
1983 | "%s: Specified prefix length %d is to large for v6 prefix", | |
1984 | __PRETTY_FUNCTION__, p.prefixlen); | |
1985 | XFREE(MTYPE_RE, re); | |
1986 | return; | |
1987 | } | |
1988 | STREAM_GET(&p.u.prefix6, s, PSIZE(p.prefixlen)); | |
1989 | ||
1990 | if (CHECK_FLAG(message, ZAPI_MESSAGE_SRCPFX)) { | |
1991 | memset(&src_p, 0, sizeof(src_p)); | |
1992 | src_p.family = AF_INET6; | |
1993 | STREAM_GETC(s, src_p.prefixlen); | |
1994 | if (src_p.prefixlen > IPV6_MAX_BITLEN) { | |
1995 | zlog_warn( | |
1996 | "%s: Specified src prefix length %d is to large for v6 prefix", | |
1997 | __PRETTY_FUNCTION__, src_p.prefixlen); | |
1998 | XFREE(MTYPE_RE, re); | |
1999 | return; | |
2000 | } | |
2001 | STREAM_GET(&src_p.prefix, s, PSIZE(src_p.prefixlen)); | |
2002 | src_pp = &src_p; | |
2003 | } else | |
2004 | src_pp = NULL; | |
2005 | ||
2006 | /* VRF ID */ | |
2007 | re->vrf_id = zvrf_id(zvrf); | |
2008 | ||
2009 | /* | |
2010 | * We need to give nh-addr, nh-ifindex with the same next-hop object | |
2011 | * to the re to ensure that IPv6 multipathing works; need to coalesce | |
2012 | * these. Clients should send the same number of paired set of | |
2013 | * next-hop-addr/next-hop-ifindices. | |
2014 | */ | |
2015 | if (CHECK_FLAG(message, ZAPI_MESSAGE_NEXTHOP)) { | |
2016 | unsigned int nh_count = 0; | |
2017 | unsigned int if_count = 0; | |
2018 | unsigned int max_nh_if = 0; | |
2019 | ||
2020 | STREAM_GETC(s, nexthop_num); | |
2021 | zserv_nexthop_num_warn(__func__, (const struct prefix *)&p, | |
2022 | nexthop_num); | |
2023 | ||
2024 | if (CHECK_FLAG(message, ZAPI_MESSAGE_LABEL)) | |
2025 | label_type = lsp_type_from_re_type(client->proto); | |
2026 | ||
2027 | for (i = 0; i < nexthop_num; i++) { | |
2028 | STREAM_GETC(s, nexthop_type); | |
2029 | ||
2030 | switch (nexthop_type) { | |
2031 | case NEXTHOP_TYPE_IPV6: | |
2032 | STREAM_GET(&nhop_addr, s, 16); | |
2033 | if (nh_count < MULTIPATH_NUM) { | |
2034 | /* | |
2035 | * For labeled-unicast, each nexthop is | |
2036 | * followed by label. | |
2037 | */ | |
2038 | if (CHECK_FLAG(message, | |
2039 | ZAPI_MESSAGE_LABEL)) { | |
2040 | STREAM_GETL(s, label); | |
2041 | labels[nh_count] = label; | |
2042 | } | |
2043 | nexthops[nh_count++] = nhop_addr; | |
2044 | } | |
2045 | break; | |
2046 | case NEXTHOP_TYPE_IPV6_IFINDEX: | |
2047 | STREAM_GET(&nhop_addr, s, 16); | |
2048 | STREAM_GETL(s, ifindex); | |
2049 | route_entry_nexthop_ipv6_ifindex_add( | |
2050 | re, &nhop_addr, ifindex, re->vrf_id); | |
2051 | break; | |
2052 | case NEXTHOP_TYPE_IFINDEX: | |
2053 | if (if_count < multipath_num) | |
2054 | STREAM_GETL(s, ifindices[if_count++]); | |
2055 | break; | |
2056 | case NEXTHOP_TYPE_BLACKHOLE: | |
2057 | route_entry_nexthop_blackhole_add(re, bh_type); | |
2058 | break; | |
2059 | default: | |
2060 | zlog_warn( | |
2061 | "%s: Please use ZEBRA_ROUTE_ADD if you want to pass non v6 nexthops", | |
2062 | __PRETTY_FUNCTION__); | |
2063 | nexthops_free(re->ng.nexthop); | |
2064 | XFREE(MTYPE_RE, re); | |
2065 | return; | |
2066 | } | |
2067 | } | |
2068 | ||
2069 | max_nh_if = (nh_count > if_count) ? nh_count : if_count; | |
2070 | for (i = 0; i < max_nh_if; i++) { | |
2071 | if ((i < nh_count) | |
2072 | && !IN6_IS_ADDR_UNSPECIFIED(&nexthops[i])) { | |
2073 | if ((i < if_count) && ifindices[i]) | |
2074 | nexthop = | |
2075 | route_entry_nexthop_ipv6_ifindex_add( | |
2076 | re, &nexthops[i], | |
2077 | ifindices[i], | |
2078 | re->vrf_id); | |
2079 | else | |
2080 | nexthop = route_entry_nexthop_ipv6_add( | |
2081 | re, &nexthops[i], re->vrf_id); | |
2082 | if (CHECK_FLAG(message, ZAPI_MESSAGE_LABEL)) | |
2083 | nexthop_add_labels(nexthop, label_type, | |
2084 | 1, &labels[i]); | |
2085 | } else { | |
2086 | if ((i < if_count) && ifindices[i]) | |
2087 | route_entry_nexthop_ifindex_add( | |
2088 | re, ifindices[i], re->vrf_id); | |
2089 | } | |
2090 | } | |
2091 | } | |
2092 | ||
2093 | /* Distance. */ | |
2094 | if (CHECK_FLAG(message, ZAPI_MESSAGE_DISTANCE)) | |
2095 | STREAM_GETC(s, re->distance); | |
2096 | ||
2097 | /* Metric. */ | |
2098 | if (CHECK_FLAG(message, ZAPI_MESSAGE_METRIC)) | |
2099 | STREAM_GETL(s, re->metric); | |
2100 | ||
2101 | /* Tag */ | |
2102 | if (CHECK_FLAG(message, ZAPI_MESSAGE_TAG)) | |
2103 | STREAM_GETL(s, re->tag); | |
2104 | else | |
2105 | re->tag = 0; | |
2106 | ||
2107 | if (CHECK_FLAG(message, ZAPI_MESSAGE_MTU)) | |
2108 | STREAM_GETL(s, re->mtu); | |
2109 | else | |
2110 | re->mtu = 0; | |
2111 | ||
2112 | re->table = zvrf->table_id; | |
2113 | ||
2114 | ret = rib_add_multipath(AFI_IP6, safi, &p, src_pp, re); | |
2115 | /* Stats */ | |
2116 | if (ret > 0) | |
2117 | client->v6_route_add_cnt++; | |
2118 | else if (ret < 0) | |
2119 | client->v6_route_upd8_cnt++; | |
2120 | ||
2121 | return; | |
2122 | ||
2123 | stream_failure: | |
2124 | nexthops_free(re->ng.nexthop); | |
2125 | XFREE(MTYPE_RE, re); | |
2126 | } | |
2127 | ||
2128 | /* Zebra server IPv6 prefix delete function. */ | |
2129 | static void zread_ipv6_delete(ZAPI_HANDLER_ARGS) | |
2130 | { | |
2131 | struct stream *s; | |
2132 | struct zapi_ipv6 api; | |
2133 | struct prefix p; | |
2134 | struct prefix_ipv6 src_p, *src_pp; | |
2135 | ||
2136 | s = msg; | |
2137 | ||
2138 | /* Type, flags, message. */ | |
2139 | STREAM_GETC(s, api.type); | |
2140 | STREAM_GETW(s, api.instance); | |
2141 | STREAM_GETL(s, api.flags); | |
2142 | STREAM_GETC(s, api.message); | |
2143 | STREAM_GETW(s, api.safi); | |
2144 | ||
2145 | /* IPv4 prefix. */ | |
2146 | memset(&p, 0, sizeof(struct prefix)); | |
2147 | p.family = AF_INET6; | |
2148 | STREAM_GETC(s, p.prefixlen); | |
2149 | STREAM_GET(&p.u.prefix6, s, PSIZE(p.prefixlen)); | |
2150 | ||
2151 | if (CHECK_FLAG(api.message, ZAPI_MESSAGE_SRCPFX)) { | |
2152 | memset(&src_p, 0, sizeof(struct prefix_ipv6)); | |
2153 | src_p.family = AF_INET6; | |
2154 | STREAM_GETC(s, src_p.prefixlen); | |
2155 | STREAM_GET(&src_p.prefix, s, PSIZE(src_p.prefixlen)); | |
2156 | src_pp = &src_p; | |
2157 | } else | |
2158 | src_pp = NULL; | |
2159 | ||
2160 | rib_delete(AFI_IP6, api.safi, zvrf_id(zvrf), api.type, api.instance, | |
2161 | api.flags, &p, src_pp, NULL, client->rtm_table, 0, false); | |
2162 | ||
2163 | client->v6_route_del_cnt++; | |
2164 | ||
2165 | stream_failure: | |
2166 | return; | |
2167 | } | |
2168 | ||
2169 | /* Register zebra server router-id information. Send current router-id */ | |
2170 | static void zread_router_id_add(ZAPI_HANDLER_ARGS) | |
2171 | { | |
2172 | struct prefix p; | |
2173 | ||
2174 | /* Router-id information is needed. */ | |
2175 | vrf_bitmap_set(client->ridinfo, zvrf_id(zvrf)); | |
2176 | ||
2177 | router_id_get(&p, zvrf_id(zvrf)); | |
2178 | ||
2179 | zsend_router_id_update(client, &p, zvrf_id(zvrf)); | |
2180 | } | |
2181 | ||
2182 | /* Unregister zebra server router-id information. */ | |
2183 | static void zread_router_id_delete(ZAPI_HANDLER_ARGS) | |
2184 | { | |
2185 | vrf_bitmap_unset(client->ridinfo, zvrf_id(zvrf)); | |
2186 | } | |
2187 | ||
2188 | static void zsend_capabilities(struct zserv *client, struct zebra_vrf *zvrf) | |
2189 | { | |
2190 | struct stream *s = stream_new(ZEBRA_MAX_PACKET_SIZ); | |
2191 | ||
2192 | zclient_create_header(s, ZEBRA_CAPABILITIES, zvrf->vrf->vrf_id); | |
2193 | stream_putc(s, mpls_enabled); | |
2194 | stream_putl(s, multipath_num); | |
2195 | ||
2196 | stream_putw_at(s, 0, stream_get_endp(s)); | |
2197 | zserv_send_message(client, s); | |
2198 | } | |
2199 | ||
2200 | /* Tie up route-type and client->sock */ | |
2201 | static void zread_hello(ZAPI_HANDLER_ARGS) | |
2202 | { | |
2203 | /* type of protocol (lib/zebra.h) */ | |
2204 | uint8_t proto; | |
2205 | unsigned short instance; | |
2206 | uint8_t notify; | |
2207 | ||
2208 | STREAM_GETC(msg, proto); | |
2209 | STREAM_GETW(msg, instance); | |
2210 | STREAM_GETC(msg, notify); | |
2211 | if (notify) | |
2212 | client->notify_owner = true; | |
2213 | ||
2214 | /* accept only dynamic routing protocols */ | |
2215 | if ((proto < ZEBRA_ROUTE_MAX) && (proto > ZEBRA_ROUTE_STATIC)) { | |
2216 | zlog_notice( | |
2217 | "client %d says hello and bids fair to announce only %s routes vrf=%u", | |
2218 | client->sock, zebra_route_string(proto), | |
2219 | zvrf->vrf->vrf_id); | |
2220 | if (instance) | |
2221 | zlog_notice("client protocol instance %d", instance); | |
2222 | ||
2223 | client->proto = proto; | |
2224 | client->instance = instance; | |
2225 | } | |
2226 | ||
2227 | zsend_capabilities(client, zvrf); | |
2228 | stream_failure: | |
2229 | return; | |
2230 | } | |
2231 | ||
2232 | /* Unregister all information in a VRF. */ | |
2233 | static void zread_vrf_unregister(ZAPI_HANDLER_ARGS) | |
2234 | { | |
2235 | int i; | |
2236 | afi_t afi; | |
2237 | ||
2238 | for (afi = AFI_IP; afi < AFI_MAX; afi++) | |
2239 | for (i = 0; i < ZEBRA_ROUTE_MAX; i++) | |
2240 | vrf_bitmap_unset(client->redist[afi][i], zvrf_id(zvrf)); | |
2241 | vrf_bitmap_unset(client->redist_default, zvrf_id(zvrf)); | |
2242 | vrf_bitmap_unset(client->ifinfo, zvrf_id(zvrf)); | |
2243 | vrf_bitmap_unset(client->ridinfo, zvrf_id(zvrf)); | |
2244 | } | |
2245 | ||
2246 | static void zread_mpls_labels(ZAPI_HANDLER_ARGS) | |
2247 | { | |
2248 | struct stream *s; | |
2249 | enum lsp_types_t type; | |
2250 | struct prefix prefix; | |
2251 | enum nexthop_types_t gtype; | |
2252 | union g_addr gate; | |
2253 | ifindex_t ifindex; | |
2254 | mpls_label_t in_label, out_label; | |
2255 | uint8_t distance; | |
2256 | ||
2257 | /* Get input stream. */ | |
2258 | s = msg; | |
2259 | ||
2260 | /* Get data. */ | |
2261 | STREAM_GETC(s, type); | |
2262 | STREAM_GETL(s, prefix.family); | |
2263 | switch (prefix.family) { | |
2264 | case AF_INET: | |
2265 | STREAM_GET(&prefix.u.prefix4.s_addr, s, IPV4_MAX_BYTELEN); | |
2266 | STREAM_GETC(s, prefix.prefixlen); | |
2267 | if (prefix.prefixlen > IPV4_MAX_BITLEN) { | |
2268 | zlog_warn( | |
2269 | "%s: Specified prefix length %d is greater than a v4 address can support", | |
2270 | __PRETTY_FUNCTION__, prefix.prefixlen); | |
2271 | return; | |
2272 | } | |
2273 | STREAM_GET(&gate.ipv4.s_addr, s, IPV4_MAX_BYTELEN); | |
2274 | break; | |
2275 | case AF_INET6: | |
2276 | STREAM_GET(&prefix.u.prefix6, s, 16); | |
2277 | STREAM_GETC(s, prefix.prefixlen); | |
2278 | if (prefix.prefixlen > IPV6_MAX_BITLEN) { | |
2279 | zlog_warn( | |
2280 | "%s: Specified prefix length %d is greater than a v6 address can support", | |
2281 | __PRETTY_FUNCTION__, prefix.prefixlen); | |
2282 | return; | |
2283 | } | |
2284 | STREAM_GET(&gate.ipv6, s, 16); | |
2285 | break; | |
2286 | default: | |
2287 | zlog_warn("%s: Specified AF %d is not supported for this call", | |
2288 | __PRETTY_FUNCTION__, prefix.family); | |
2289 | return; | |
2290 | } | |
2291 | STREAM_GETL(s, ifindex); | |
2292 | STREAM_GETC(s, distance); | |
2293 | STREAM_GETL(s, in_label); | |
2294 | STREAM_GETL(s, out_label); | |
2295 | ||
2296 | switch (prefix.family) { | |
2297 | case AF_INET: | |
2298 | if (ifindex) | |
2299 | gtype = NEXTHOP_TYPE_IPV4_IFINDEX; | |
2300 | else | |
2301 | gtype = NEXTHOP_TYPE_IPV4; | |
2302 | break; | |
2303 | case AF_INET6: | |
2304 | if (ifindex) | |
2305 | gtype = NEXTHOP_TYPE_IPV6_IFINDEX; | |
2306 | else | |
2307 | gtype = NEXTHOP_TYPE_IPV6; | |
2308 | break; | |
2309 | default: | |
2310 | return; | |
2311 | } | |
2312 | ||
2313 | if (!mpls_enabled) | |
2314 | return; | |
2315 | ||
2316 | if (hdr->command == ZEBRA_MPLS_LABELS_ADD) { | |
2317 | mpls_lsp_install(zvrf, type, in_label, out_label, gtype, &gate, | |
2318 | ifindex); | |
2319 | mpls_ftn_update(1, zvrf, type, &prefix, gtype, &gate, ifindex, | |
2320 | distance, out_label); | |
2321 | } else if (hdr->command == ZEBRA_MPLS_LABELS_DELETE) { | |
2322 | mpls_lsp_uninstall(zvrf, type, in_label, gtype, &gate, ifindex); | |
2323 | mpls_ftn_update(0, zvrf, type, &prefix, gtype, &gate, ifindex, | |
2324 | distance, out_label); | |
2325 | } | |
2326 | stream_failure: | |
2327 | return; | |
2328 | } | |
2329 | ||
2330 | /* Send response to a table manager connect request to client */ | |
2331 | static void zread_table_manager_connect(struct zserv *client, | |
2332 | struct stream *msg, vrf_id_t vrf_id) | |
2333 | { | |
2334 | struct stream *s; | |
2335 | uint8_t proto; | |
2336 | uint16_t instance; | |
2337 | ||
2338 | s = msg; | |
2339 | ||
2340 | /* Get data. */ | |
2341 | STREAM_GETC(s, proto); | |
2342 | STREAM_GETW(s, instance); | |
2343 | ||
2344 | /* accept only dynamic routing protocols */ | |
2345 | if ((proto >= ZEBRA_ROUTE_MAX) || (proto <= ZEBRA_ROUTE_STATIC)) { | |
2346 | zlog_err("client %d has wrong protocol %s", client->sock, | |
2347 | zebra_route_string(proto)); | |
2348 | zsend_table_manager_connect_response(client, vrf_id, 1); | |
2349 | return; | |
2350 | } | |
2351 | zlog_notice("client %d with vrf %u instance %u connected as %s", | |
2352 | client->sock, vrf_id, instance, zebra_route_string(proto)); | |
2353 | client->proto = proto; | |
2354 | client->instance = instance; | |
2355 | ||
2356 | /* | |
2357 | * Release previous labels of same protocol and instance. | |
2358 | * This is done in case it restarted from an unexpected shutdown. | |
2359 | */ | |
2360 | release_daemon_table_chunks(client); | |
2361 | ||
2362 | zsend_table_manager_connect_response(client, vrf_id, 0); | |
2363 | ||
2364 | stream_failure: | |
2365 | return; | |
2366 | } | |
2367 | ||
2368 | static void zread_label_manager_connect(struct zserv *client, | |
2369 | struct stream *msg, vrf_id_t vrf_id) | |
2370 | { | |
2371 | struct stream *s; | |
2372 | /* type of protocol (lib/zebra.h) */ | |
2373 | uint8_t proto; | |
2374 | unsigned short instance; | |
2375 | ||
2376 | /* Get input stream. */ | |
2377 | s = msg; | |
2378 | ||
2379 | /* Get data. */ | |
2380 | STREAM_GETC(s, proto); | |
2381 | STREAM_GETW(s, instance); | |
2382 | ||
2383 | /* accept only dynamic routing protocols */ | |
2384 | if ((proto >= ZEBRA_ROUTE_MAX) || (proto <= ZEBRA_ROUTE_STATIC)) { | |
2385 | zlog_err("client %d has wrong protocol %s", client->sock, | |
2386 | zebra_route_string(proto)); | |
2387 | zsend_label_manager_connect_response(client, vrf_id, 1); | |
2388 | return; | |
2389 | } | |
2390 | zlog_notice("client %d with vrf %u instance %u connected as %s", | |
2391 | client->sock, vrf_id, instance, zebra_route_string(proto)); | |
2392 | client->proto = proto; | |
2393 | client->instance = instance; | |
2394 | ||
2395 | /* | |
2396 | * Release previous labels of same protocol and instance. | |
2397 | * This is done in case it restarted from an unexpected shutdown. | |
2398 | */ | |
2399 | release_daemon_label_chunks(client); | |
2400 | ||
2401 | zlog_debug( | |
2402 | " Label Manager client connected: sock %d, proto %s, vrf %u instance %u", | |
2403 | client->sock, zebra_route_string(proto), vrf_id, instance); | |
2404 | /* send response back */ | |
2405 | zsend_label_manager_connect_response(client, vrf_id, 0); | |
2406 | ||
2407 | stream_failure: | |
2408 | return; | |
2409 | } | |
2410 | static int msg_client_id_mismatch(const char *op, struct zserv *client, | |
2411 | uint8_t proto, unsigned int instance) | |
2412 | { | |
2413 | if (proto != client->proto) { | |
2414 | zlog_err("%s: msg vs client proto mismatch, client=%u msg=%u", | |
2415 | op, client->proto, proto); | |
2416 | /* TODO: fail when BGP sets proto and instance */ | |
2417 | /* return 1; */ | |
2418 | } | |
2419 | ||
2420 | if (instance != client->instance) { | |
2421 | zlog_err( | |
2422 | "%s: msg vs client instance mismatch, client=%u msg=%u", | |
2423 | op, client->instance, instance); | |
2424 | /* TODO: fail when BGP sets proto and instance */ | |
2425 | /* return 1; */ | |
2426 | } | |
2427 | ||
2428 | return 0; | |
2429 | } | |
2430 | ||
2431 | static void zread_get_label_chunk(struct zserv *client, struct stream *msg, | |
2432 | vrf_id_t vrf_id) | |
2433 | { | |
2434 | struct stream *s; | |
2435 | uint8_t keep; | |
2436 | uint32_t size; | |
2437 | struct label_manager_chunk *lmc; | |
2438 | uint8_t proto; | |
2439 | unsigned short instance; | |
2440 | ||
2441 | /* Get input stream. */ | |
2442 | s = msg; | |
2443 | ||
2444 | /* Get data. */ | |
2445 | STREAM_GETC(s, proto); | |
2446 | STREAM_GETW(s, instance); | |
2447 | STREAM_GETC(s, keep); | |
2448 | STREAM_GETL(s, size); | |
2449 | ||
2450 | /* detect client vs message (proto,instance) mismatch */ | |
2451 | if (msg_client_id_mismatch("Get-label-chunk", client, proto, instance)) | |
2452 | return; | |
2453 | ||
2454 | lmc = assign_label_chunk(client->proto, client->instance, keep, size); | |
2455 | if (!lmc) | |
2456 | zlog_err( | |
2457 | "Unable to assign Label Chunk of size %u to %s instance %u", | |
2458 | size, zebra_route_string(client->proto), | |
2459 | client->instance); | |
2460 | else | |
2461 | zlog_debug("Assigned Label Chunk %u - %u to %s instance %u", | |
2462 | lmc->start, lmc->end, | |
2463 | zebra_route_string(client->proto), client->instance); | |
2464 | /* send response back */ | |
2465 | zsend_assign_label_chunk_response(client, vrf_id, lmc); | |
2466 | ||
2467 | stream_failure: | |
2468 | return; | |
2469 | } | |
2470 | ||
2471 | static void zread_release_label_chunk(struct zserv *client, struct stream *msg) | |
2472 | { | |
2473 | struct stream *s; | |
2474 | uint32_t start, end; | |
2475 | uint8_t proto; | |
2476 | unsigned short instance; | |
2477 | ||
2478 | /* Get input stream. */ | |
2479 | s = msg; | |
2480 | ||
2481 | /* Get data. */ | |
2482 | STREAM_GETC(s, proto); | |
2483 | STREAM_GETW(s, instance); | |
2484 | STREAM_GETL(s, start); | |
2485 | STREAM_GETL(s, end); | |
2486 | ||
2487 | /* detect client vs message (proto,instance) mismatch */ | |
2488 | if (msg_client_id_mismatch("Release-label-chunk", client, proto, | |
2489 | instance)) | |
2490 | return; | |
2491 | ||
2492 | release_label_chunk(client->proto, client->instance, start, end); | |
2493 | ||
2494 | stream_failure: | |
2495 | return; | |
2496 | } | |
2497 | static void zread_label_manager_request(ZAPI_HANDLER_ARGS) | |
2498 | { | |
2499 | /* to avoid sending other messages like ZERBA_INTERFACE_UP */ | |
2500 | if (hdr->command == ZEBRA_LABEL_MANAGER_CONNECT) | |
2501 | client->is_synchronous = 1; | |
2502 | ||
2503 | /* external label manager */ | |
2504 | if (lm_is_external) | |
2505 | zread_relay_label_manager_request(hdr->command, client, msg, | |
2506 | zvrf_id(zvrf)); | |
2507 | /* this is a label manager */ | |
2508 | else { | |
2509 | if (hdr->command == ZEBRA_LABEL_MANAGER_CONNECT) | |
2510 | zread_label_manager_connect(client, msg, zvrf_id(zvrf)); | |
2511 | else { | |
2512 | /* Sanity: don't allow 'unidentified' requests */ | |
2513 | if (!client->proto) { | |
2514 | zlog_err( | |
2515 | "Got label request from an unidentified client"); | |
2516 | return; | |
2517 | } | |
2518 | if (hdr->command == ZEBRA_GET_LABEL_CHUNK) | |
2519 | zread_get_label_chunk(client, msg, | |
2520 | zvrf_id(zvrf)); | |
2521 | else if (hdr->command == ZEBRA_RELEASE_LABEL_CHUNK) | |
2522 | zread_release_label_chunk(client, msg); | |
2523 | } | |
2524 | } | |
2525 | } | |
2526 | ||
2527 | static void zread_get_table_chunk(struct zserv *client, struct stream *msg, | |
2528 | vrf_id_t vrf_id) | |
2529 | { | |
2530 | struct stream *s; | |
2531 | uint32_t size; | |
2532 | struct table_manager_chunk *tmc; | |
2533 | ||
2534 | /* Get input stream. */ | |
2535 | s = msg; | |
2536 | ||
2537 | /* Get data. */ | |
2538 | STREAM_GETL(s, size); | |
2539 | ||
2540 | tmc = assign_table_chunk(client->proto, client->instance, size); | |
2541 | if (!tmc) | |
2542 | zlog_err("%s: Unable to assign Table Chunk of size %u", | |
2543 | __func__, size); | |
2544 | else | |
2545 | zlog_debug("Assigned Table Chunk %u - %u", tmc->start, | |
2546 | tmc->end); | |
2547 | /* send response back */ | |
2548 | zsend_assign_table_chunk_response(client, vrf_id, tmc); | |
2549 | ||
2550 | stream_failure: | |
2551 | return; | |
2552 | } | |
2553 | ||
2554 | static void zread_release_table_chunk(struct zserv *client, struct stream *msg) | |
2555 | { | |
2556 | struct stream *s; | |
2557 | uint32_t start, end; | |
2558 | ||
2559 | /* Get input stream. */ | |
2560 | s = msg; | |
2561 | ||
2562 | /* Get data. */ | |
2563 | STREAM_GETL(s, start); | |
2564 | STREAM_GETL(s, end); | |
2565 | ||
2566 | release_table_chunk(client->proto, client->instance, start, end); | |
2567 | ||
2568 | stream_failure: | |
2569 | return; | |
2570 | } | |
2571 | ||
2572 | static void zread_table_manager_request(ZAPI_HANDLER_ARGS) | |
2573 | { | |
2574 | /* to avoid sending other messages like ZERBA_INTERFACE_UP */ | |
2575 | if (hdr->command == ZEBRA_TABLE_MANAGER_CONNECT) | |
2576 | zread_table_manager_connect(client, msg, zvrf_id(zvrf)); | |
2577 | else { | |
2578 | /* Sanity: don't allow 'unidentified' requests */ | |
2579 | if (!client->proto) { | |
2580 | zlog_err( | |
2581 | "Got table request from an unidentified client"); | |
2582 | return; | |
2583 | } | |
2584 | if (hdr->command == ZEBRA_GET_TABLE_CHUNK) | |
2585 | zread_get_table_chunk(client, msg, zvrf_id(zvrf)); | |
2586 | else if (hdr->command == ZEBRA_RELEASE_TABLE_CHUNK) | |
2587 | zread_release_table_chunk(client, msg); | |
2588 | } | |
2589 | } | |
2590 | ||
2591 | static void zread_pseudowire(ZAPI_HANDLER_ARGS) | |
2592 | { | |
2593 | struct stream *s; | |
2594 | char ifname[IF_NAMESIZE]; | |
2595 | ifindex_t ifindex; | |
2596 | int type; | |
2597 | int af; | |
2598 | union g_addr nexthop; | |
2599 | uint32_t local_label; | |
2600 | uint32_t remote_label; | |
2601 | uint8_t flags; | |
2602 | union pw_protocol_fields data; | |
2603 | uint8_t protocol; | |
2604 | struct zebra_pw *pw; | |
2605 | ||
2606 | /* Get input stream. */ | |
2607 | s = msg; | |
2608 | ||
2609 | /* Get data. */ | |
2610 | STREAM_GET(ifname, s, IF_NAMESIZE); | |
2611 | STREAM_GETL(s, ifindex); | |
2612 | STREAM_GETL(s, type); | |
2613 | STREAM_GETL(s, af); | |
2614 | switch (af) { | |
2615 | case AF_INET: | |
2616 | STREAM_GET(&nexthop.ipv4.s_addr, s, IPV4_MAX_BYTELEN); | |
2617 | break; | |
2618 | case AF_INET6: | |
2619 | STREAM_GET(&nexthop.ipv6, s, 16); | |
2620 | break; | |
2621 | default: | |
2622 | return; | |
2623 | } | |
2624 | STREAM_GETL(s, local_label); | |
2625 | STREAM_GETL(s, remote_label); | |
2626 | STREAM_GETC(s, flags); | |
2627 | STREAM_GET(&data, s, sizeof(data)); | |
2628 | protocol = client->proto; | |
2629 | ||
2630 | pw = zebra_pw_find(zvrf, ifname); | |
2631 | switch (hdr->command) { | |
2632 | case ZEBRA_PW_ADD: | |
2633 | if (pw) { | |
2634 | zlog_warn("%s: pseudowire %s already exists [%s]", | |
2635 | __func__, ifname, | |
2636 | zserv_command_string(hdr->command)); | |
2637 | return; | |
2638 | } | |
2639 | ||
2640 | zebra_pw_add(zvrf, ifname, protocol, client); | |
2641 | break; | |
2642 | case ZEBRA_PW_DELETE: | |
2643 | if (!pw) { | |
2644 | zlog_warn("%s: pseudowire %s not found [%s]", __func__, | |
2645 | ifname, zserv_command_string(hdr->command)); | |
2646 | return; | |
2647 | } | |
2648 | ||
2649 | zebra_pw_del(zvrf, pw); | |
2650 | break; | |
2651 | case ZEBRA_PW_SET: | |
2652 | case ZEBRA_PW_UNSET: | |
2653 | if (!pw) { | |
2654 | zlog_warn("%s: pseudowire %s not found [%s]", __func__, | |
2655 | ifname, zserv_command_string(hdr->command)); | |
2656 | return; | |
2657 | } | |
2658 | ||
2659 | switch (hdr->command) { | |
2660 | case ZEBRA_PW_SET: | |
2661 | pw->enabled = 1; | |
2662 | break; | |
2663 | case ZEBRA_PW_UNSET: | |
2664 | pw->enabled = 0; | |
2665 | break; | |
2666 | } | |
2667 | ||
2668 | zebra_pw_change(pw, ifindex, type, af, &nexthop, local_label, | |
2669 | remote_label, flags, &data); | |
2670 | break; | |
2671 | } | |
2672 | ||
2673 | stream_failure: | |
2674 | return; | |
2675 | } | |
2676 | ||
2677 | static void zread_interface_set_master(ZAPI_HANDLER_ARGS) | |
2678 | { | |
2679 | struct interface *master; | |
2680 | struct interface *slave; | |
2681 | struct stream *s = msg; | |
2682 | int ifindex; | |
2683 | vrf_id_t vrf_id; | |
2684 | ||
2685 | STREAM_GETL(s, vrf_id); | |
2686 | STREAM_GETL(s, ifindex); | |
2687 | master = if_lookup_by_index(ifindex, vrf_id); | |
2688 | ||
2689 | STREAM_GETL(s, vrf_id); | |
2690 | STREAM_GETL(s, ifindex); | |
2691 | slave = if_lookup_by_index(ifindex, vrf_id); | |
2692 | ||
2693 | if (!master || !slave) | |
2694 | return; | |
2695 | ||
2696 | kernel_interface_set_master(master, slave); | |
2697 | ||
2698 | stream_failure: | |
2699 | return; | |
2700 | } | |
2701 | ||
2702 | ||
2703 | static void zread_vrf_label(ZAPI_HANDLER_ARGS) | |
2704 | { | |
2705 | struct interface *ifp; | |
2706 | mpls_label_t nlabel; | |
2707 | afi_t afi; | |
2708 | struct stream *s; | |
2709 | struct zebra_vrf *def_zvrf; | |
2710 | enum lsp_types_t ltype; | |
2711 | ||
2712 | s = msg; | |
2713 | STREAM_GETL(s, nlabel); | |
2714 | STREAM_GETC(s, afi); | |
2715 | if (nlabel == zvrf->label[afi]) { | |
2716 | /* | |
2717 | * Nothing to do here move along | |
2718 | */ | |
2719 | return; | |
2720 | } | |
2721 | ||
2722 | STREAM_GETC(s, ltype); | |
2723 | ||
2724 | if (zvrf->vrf->vrf_id != VRF_DEFAULT) | |
2725 | ifp = if_lookup_by_name(zvrf->vrf->name, zvrf->vrf->vrf_id); | |
2726 | else | |
2727 | ifp = if_lookup_by_name("lo", VRF_DEFAULT); | |
2728 | ||
2729 | if (!ifp) { | |
2730 | zlog_debug("Unable to find specified Interface for %s", | |
2731 | zvrf->vrf->name); | |
2732 | return; | |
2733 | } | |
2734 | ||
2735 | def_zvrf = zebra_vrf_lookup_by_id(VRF_DEFAULT); | |
2736 | ||
2737 | if (zvrf->label[afi] != MPLS_LABEL_NONE) { | |
2738 | afi_t scrubber; | |
2739 | bool really_remove; | |
2740 | ||
2741 | really_remove = true; | |
2742 | for (scrubber = AFI_IP; scrubber < AFI_MAX; scrubber++) { | |
2743 | if (scrubber == afi) | |
2744 | continue; | |
2745 | ||
2746 | if (zvrf->label[scrubber] == MPLS_LABEL_NONE) | |
2747 | continue; | |
2748 | ||
2749 | if (zvrf->label[afi] == zvrf->label[scrubber]) { | |
2750 | really_remove = false; | |
2751 | break; | |
2752 | } | |
2753 | } | |
2754 | ||
2755 | if (really_remove) | |
2756 | mpls_lsp_uninstall(def_zvrf, ltype, zvrf->label[afi], | |
2757 | NEXTHOP_TYPE_IFINDEX, NULL, | |
2758 | ifp->ifindex); | |
2759 | } | |
2760 | ||
2761 | if (nlabel != MPLS_LABEL_NONE) | |
2762 | mpls_lsp_install(def_zvrf, ltype, nlabel, | |
2763 | MPLS_LABEL_IMPLICIT_NULL, NEXTHOP_TYPE_IFINDEX, | |
2764 | NULL, ifp->ifindex); | |
2765 | ||
2766 | zvrf->label[afi] = nlabel; | |
2767 | stream_failure: | |
2768 | return; | |
2769 | } | |
2770 | ||
2771 | static inline void zread_rule(ZAPI_HANDLER_ARGS) | |
2772 | { | |
2773 | struct zebra_pbr_rule zpr; | |
2774 | struct stream *s; | |
2775 | uint32_t total, i; | |
2776 | ifindex_t ifindex; | |
2777 | ||
2778 | s = msg; | |
2779 | STREAM_GETL(s, total); | |
2780 | ||
2781 | for (i = 0; i < total; i++) { | |
2782 | memset(&zpr, 0, sizeof(zpr)); | |
2783 | ||
2784 | zpr.sock = client->sock; | |
2785 | zpr.rule.vrf_id = hdr->vrf_id; | |
2786 | STREAM_GETL(s, zpr.rule.seq); | |
2787 | STREAM_GETL(s, zpr.rule.priority); | |
2788 | STREAM_GETL(s, zpr.rule.unique); | |
2789 | STREAM_GETC(s, zpr.rule.filter.src_ip.family); | |
2790 | STREAM_GETC(s, zpr.rule.filter.src_ip.prefixlen); | |
2791 | STREAM_GET(&zpr.rule.filter.src_ip.u.prefix, s, | |
2792 | prefix_blen(&zpr.rule.filter.src_ip)); | |
2793 | STREAM_GETW(s, zpr.rule.filter.src_port); | |
2794 | STREAM_GETC(s, zpr.rule.filter.dst_ip.family); | |
2795 | STREAM_GETC(s, zpr.rule.filter.dst_ip.prefixlen); | |
2796 | STREAM_GET(&zpr.rule.filter.dst_ip.u.prefix, s, | |
2797 | prefix_blen(&zpr.rule.filter.dst_ip)); | |
2798 | STREAM_GETW(s, zpr.rule.filter.dst_port); | |
2799 | STREAM_GETL(s, zpr.rule.filter.fwmark); | |
2800 | STREAM_GETL(s, zpr.rule.action.table); | |
2801 | STREAM_GETL(s, ifindex); | |
2802 | ||
2803 | if (ifindex) { | |
2804 | zpr.ifp = if_lookup_by_index(ifindex, VRF_UNKNOWN); | |
2805 | if (!zpr.ifp) { | |
2806 | zlog_debug("Failed to lookup ifindex: %u", | |
2807 | ifindex); | |
2808 | return; | |
2809 | } | |
2810 | } | |
2811 | ||
2812 | if (!is_default_prefix(&zpr.rule.filter.src_ip)) | |
2813 | zpr.rule.filter.filter_bm |= PBR_FILTER_SRC_IP; | |
2814 | ||
2815 | if (!is_default_prefix(&zpr.rule.filter.dst_ip)) | |
2816 | zpr.rule.filter.filter_bm |= PBR_FILTER_DST_IP; | |
2817 | ||
2818 | if (zpr.rule.filter.src_port) | |
2819 | zpr.rule.filter.filter_bm |= PBR_FILTER_SRC_PORT; | |
2820 | ||
2821 | if (zpr.rule.filter.dst_port) | |
2822 | zpr.rule.filter.filter_bm |= PBR_FILTER_DST_PORT; | |
2823 | ||
2824 | if (zpr.rule.filter.fwmark) | |
2825 | zpr.rule.filter.filter_bm |= PBR_FILTER_FWMARK; | |
2826 | ||
2827 | if (hdr->command == ZEBRA_RULE_ADD) | |
2828 | zebra_pbr_add_rule(zvrf->zns, &zpr); | |
2829 | else | |
2830 | zebra_pbr_del_rule(zvrf->zns, &zpr); | |
2831 | } | |
2832 | ||
2833 | stream_failure: | |
2834 | return; | |
2835 | } | |
2836 | ||
2837 | static inline void zread_ipset(ZAPI_HANDLER_ARGS) | |
2838 | { | |
2839 | struct zebra_pbr_ipset zpi; | |
2840 | struct stream *s; | |
2841 | uint32_t total, i; | |
2842 | ||
2843 | s = msg; | |
2844 | STREAM_GETL(s, total); | |
2845 | ||
2846 | for (i = 0; i < total; i++) { | |
2847 | memset(&zpi, 0, sizeof(zpi)); | |
2848 | ||
2849 | zpi.sock = client->sock; | |
2850 | zpi.vrf_id = zvrf->vrf->vrf_id; | |
2851 | STREAM_GETL(s, zpi.unique); | |
2852 | STREAM_GETL(s, zpi.type); | |
2853 | STREAM_GET(&zpi.ipset_name, s, ZEBRA_IPSET_NAME_SIZE); | |
2854 | ||
2855 | if (hdr->command == ZEBRA_IPSET_CREATE) | |
2856 | zebra_pbr_create_ipset(zvrf->zns, &zpi); | |
2857 | else | |
2858 | zebra_pbr_destroy_ipset(zvrf->zns, &zpi); | |
2859 | } | |
2860 | ||
2861 | stream_failure: | |
2862 | return; | |
2863 | } | |
2864 | ||
2865 | static inline void zread_ipset_entry(ZAPI_HANDLER_ARGS) | |
2866 | { | |
2867 | struct zebra_pbr_ipset_entry zpi; | |
2868 | struct zebra_pbr_ipset ipset; | |
2869 | struct stream *s; | |
2870 | uint32_t total, i; | |
2871 | ||
2872 | s = msg; | |
2873 | STREAM_GETL(s, total); | |
2874 | ||
2875 | for (i = 0; i < total; i++) { | |
2876 | memset(&zpi, 0, sizeof(zpi)); | |
2877 | memset(&ipset, 0, sizeof(ipset)); | |
2878 | ||
2879 | zpi.sock = client->sock; | |
2880 | STREAM_GETL(s, zpi.unique); | |
2881 | STREAM_GET(&ipset.ipset_name, s, ZEBRA_IPSET_NAME_SIZE); | |
2882 | STREAM_GETC(s, zpi.src.family); | |
2883 | STREAM_GETC(s, zpi.src.prefixlen); | |
2884 | STREAM_GET(&zpi.src.u.prefix, s, prefix_blen(&zpi.src)); | |
2885 | STREAM_GETC(s, zpi.dst.family); | |
2886 | STREAM_GETC(s, zpi.dst.prefixlen); | |
2887 | STREAM_GET(&zpi.dst.u.prefix, s, prefix_blen(&zpi.dst)); | |
2888 | ||
2889 | STREAM_GETW(s, zpi.src_port_min); | |
2890 | STREAM_GETW(s, zpi.src_port_max); | |
2891 | STREAM_GETW(s, zpi.dst_port_min); | |
2892 | STREAM_GETW(s, zpi.dst_port_max); | |
2893 | STREAM_GETC(s, zpi.proto); | |
2894 | if (!is_default_prefix(&zpi.src)) | |
2895 | zpi.filter_bm |= PBR_FILTER_SRC_IP; | |
2896 | ||
2897 | if (!is_default_prefix(&zpi.dst)) | |
2898 | zpi.filter_bm |= PBR_FILTER_DST_IP; | |
2899 | if (zpi.dst_port_min != 0) | |
2900 | zpi.filter_bm |= PBR_FILTER_DST_PORT; | |
2901 | if (zpi.src_port_min != 0) | |
2902 | zpi.filter_bm |= PBR_FILTER_SRC_PORT; | |
2903 | if (zpi.dst_port_max != 0) | |
2904 | zpi.filter_bm |= PBR_FILTER_DST_PORT_RANGE; | |
2905 | if (zpi.src_port_max != 0) | |
2906 | zpi.filter_bm |= PBR_FILTER_SRC_PORT_RANGE; | |
2907 | if (zpi.proto != 0) | |
2908 | zpi.filter_bm |= PBR_FILTER_PROTO; | |
2909 | ||
2910 | /* calculate backpointer */ | |
2911 | zpi.backpointer = zebra_pbr_lookup_ipset_pername( | |
2912 | zvrf->zns, ipset.ipset_name); | |
2913 | if (hdr->command == ZEBRA_IPSET_ENTRY_ADD) | |
2914 | zebra_pbr_add_ipset_entry(zvrf->zns, &zpi); | |
2915 | else | |
2916 | zebra_pbr_del_ipset_entry(zvrf->zns, &zpi); | |
2917 | } | |
2918 | ||
2919 | stream_failure: | |
2920 | return; | |
2921 | } | |
2922 | ||
2923 | static inline void zread_iptable(ZAPI_HANDLER_ARGS) | |
2924 | { | |
2925 | struct zebra_pbr_iptable zpi; | |
2926 | struct stream *s; | |
2927 | ||
2928 | s = msg; | |
2929 | ||
2930 | memset(&zpi, 0, sizeof(zpi)); | |
2931 | ||
2932 | zpi.interface_name_list = list_new(); | |
2933 | zpi.sock = client->sock; | |
2934 | zpi.vrf_id = zvrf->vrf->vrf_id; | |
2935 | STREAM_GETL(s, zpi.unique); | |
2936 | STREAM_GETL(s, zpi.type); | |
2937 | STREAM_GETL(s, zpi.filter_bm); | |
2938 | STREAM_GETL(s, zpi.action); | |
2939 | STREAM_GETL(s, zpi.fwmark); | |
2940 | STREAM_GET(&zpi.ipset_name, s, ZEBRA_IPSET_NAME_SIZE); | |
2941 | STREAM_GETL(s, zpi.nb_interface); | |
2942 | zebra_pbr_iptable_update_interfacelist(s, &zpi); | |
2943 | ||
2944 | if (hdr->command == ZEBRA_IPTABLE_ADD) | |
2945 | zebra_pbr_add_iptable(zvrf->zns, &zpi); | |
2946 | else | |
2947 | zebra_pbr_del_iptable(zvrf->zns, &zpi); | |
2948 | stream_failure: | |
2949 | return; | |
2950 | } | |
2951 | ||
2952 | void (*zserv_handlers[])(ZAPI_HANDLER_ARGS) = { | |
2953 | [ZEBRA_ROUTER_ID_ADD] = zread_router_id_add, | |
2954 | [ZEBRA_ROUTER_ID_DELETE] = zread_router_id_delete, | |
2955 | [ZEBRA_INTERFACE_ADD] = zread_interface_add, | |
2956 | [ZEBRA_INTERFACE_DELETE] = zread_interface_delete, | |
2957 | [ZEBRA_ROUTE_ADD] = zread_route_add, | |
2958 | [ZEBRA_ROUTE_DELETE] = zread_route_del, | |
2959 | [ZEBRA_IPV4_ROUTE_ADD] = zread_ipv4_add, | |
2960 | [ZEBRA_IPV4_ROUTE_DELETE] = zread_ipv4_delete, | |
2961 | [ZEBRA_IPV4_ROUTE_IPV6_NEXTHOP_ADD] = zread_ipv4_route_ipv6_nexthop_add, | |
2962 | [ZEBRA_IPV6_ROUTE_ADD] = zread_ipv6_add, | |
2963 | [ZEBRA_IPV6_ROUTE_DELETE] = zread_ipv6_delete, | |
2964 | [ZEBRA_REDISTRIBUTE_ADD] = zebra_redistribute_add, | |
2965 | [ZEBRA_REDISTRIBUTE_DELETE] = zebra_redistribute_delete, | |
2966 | [ZEBRA_REDISTRIBUTE_DEFAULT_ADD] = zebra_redistribute_default_add, | |
2967 | [ZEBRA_REDISTRIBUTE_DEFAULT_DELETE] = zebra_redistribute_default_delete, | |
2968 | [ZEBRA_IPV4_NEXTHOP_LOOKUP_MRIB] = zread_ipv4_nexthop_lookup_mrib, | |
2969 | [ZEBRA_HELLO] = zread_hello, | |
2970 | [ZEBRA_NEXTHOP_REGISTER] = zread_rnh_register, | |
2971 | [ZEBRA_NEXTHOP_UNREGISTER] = zread_rnh_unregister, | |
2972 | [ZEBRA_IMPORT_ROUTE_REGISTER] = zread_rnh_register, | |
2973 | [ZEBRA_IMPORT_ROUTE_UNREGISTER] = zread_rnh_unregister, | |
2974 | [ZEBRA_BFD_DEST_UPDATE] = zebra_ptm_bfd_dst_register, | |
2975 | [ZEBRA_BFD_DEST_REGISTER] = zebra_ptm_bfd_dst_register, | |
2976 | [ZEBRA_BFD_DEST_DEREGISTER] = zebra_ptm_bfd_dst_deregister, | |
2977 | [ZEBRA_VRF_UNREGISTER] = zread_vrf_unregister, | |
2978 | [ZEBRA_VRF_LABEL] = zread_vrf_label, | |
2979 | [ZEBRA_BFD_CLIENT_REGISTER] = zebra_ptm_bfd_client_register, | |
2980 | #if defined(HAVE_RTADV) | |
2981 | [ZEBRA_INTERFACE_ENABLE_RADV] = zebra_interface_radv_enable, | |
2982 | [ZEBRA_INTERFACE_DISABLE_RADV] = zebra_interface_radv_disable, | |
2983 | #else | |
2984 | [ZEBRA_INTERFACE_ENABLE_RADV] = NULL, | |
2985 | [ZEBRA_INTERFACE_DISABLE_RADV] = NULL, | |
2986 | #endif | |
2987 | [ZEBRA_MPLS_LABELS_ADD] = zread_mpls_labels, | |
2988 | [ZEBRA_MPLS_LABELS_DELETE] = zread_mpls_labels, | |
2989 | [ZEBRA_IPMR_ROUTE_STATS] = zebra_ipmr_route_stats, | |
2990 | [ZEBRA_LABEL_MANAGER_CONNECT] = zread_label_manager_request, | |
2991 | [ZEBRA_GET_LABEL_CHUNK] = zread_label_manager_request, | |
2992 | [ZEBRA_RELEASE_LABEL_CHUNK] = zread_label_manager_request, | |
2993 | [ZEBRA_FEC_REGISTER] = zread_fec_register, | |
2994 | [ZEBRA_FEC_UNREGISTER] = zread_fec_unregister, | |
2995 | [ZEBRA_ADVERTISE_DEFAULT_GW] = zebra_vxlan_advertise_gw_macip, | |
2996 | [ZEBRA_ADVERTISE_SUBNET] = zebra_vxlan_advertise_subnet, | |
2997 | [ZEBRA_ADVERTISE_ALL_VNI] = zebra_vxlan_advertise_all_vni, | |
2998 | [ZEBRA_REMOTE_VTEP_ADD] = zebra_vxlan_remote_vtep_add, | |
2999 | [ZEBRA_REMOTE_VTEP_DEL] = zebra_vxlan_remote_vtep_del, | |
3000 | [ZEBRA_REMOTE_MACIP_ADD] = zebra_vxlan_remote_macip_add, | |
3001 | [ZEBRA_REMOTE_MACIP_DEL] = zebra_vxlan_remote_macip_del, | |
3002 | [ZEBRA_INTERFACE_SET_MASTER] = zread_interface_set_master, | |
3003 | [ZEBRA_PW_ADD] = zread_pseudowire, | |
3004 | [ZEBRA_PW_DELETE] = zread_pseudowire, | |
3005 | [ZEBRA_PW_SET] = zread_pseudowire, | |
3006 | [ZEBRA_PW_UNSET] = zread_pseudowire, | |
3007 | [ZEBRA_RULE_ADD] = zread_rule, | |
3008 | [ZEBRA_RULE_DELETE] = zread_rule, | |
3009 | [ZEBRA_TABLE_MANAGER_CONNECT] = zread_table_manager_request, | |
3010 | [ZEBRA_GET_TABLE_CHUNK] = zread_table_manager_request, | |
3011 | [ZEBRA_RELEASE_TABLE_CHUNK] = zread_table_manager_request, | |
3012 | [ZEBRA_IPSET_CREATE] = zread_ipset, | |
3013 | [ZEBRA_IPSET_DESTROY] = zread_ipset, | |
3014 | [ZEBRA_IPSET_ENTRY_ADD] = zread_ipset_entry, | |
3015 | [ZEBRA_IPSET_ENTRY_DELETE] = zread_ipset_entry, | |
3016 | [ZEBRA_IPTABLE_ADD] = zread_iptable, | |
3017 | [ZEBRA_IPTABLE_DELETE] = zread_iptable, | |
3018 | }; | |
3019 | ||
3020 | void zserv_handle_commands(struct zserv *client, struct stream *msg) | |
3021 | { | |
3022 | struct zmsghdr hdr; | |
3023 | struct zebra_vrf *zvrf; | |
3024 | ||
3025 | zapi_parse_header(msg, &hdr); | |
3026 | ||
3027 | hdr.length -= ZEBRA_HEADER_SIZE; | |
3028 | ||
3029 | /* lookup vrf */ | |
3030 | zvrf = zebra_vrf_lookup_by_id(hdr.vrf_id); | |
3031 | if (!zvrf) { | |
3032 | if (IS_ZEBRA_DEBUG_PACKET && IS_ZEBRA_DEBUG_RECV) | |
3033 | zlog_warn("ZAPI message specifies unknown VRF: %d", | |
3034 | hdr.vrf_id); | |
3035 | return; | |
3036 | } | |
3037 | ||
3038 | if (hdr.command > array_size(zserv_handlers) | |
3039 | || zserv_handlers[hdr.command] == NULL) | |
3040 | zlog_info("Zebra received unknown command %d", hdr.command); | |
3041 | else | |
3042 | zserv_handlers[hdr.command](client, &hdr, msg, zvrf); | |
3043 | } |