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Commit | Line | Data |
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d62a17ae | 1 | /* |
65efcfce LB |
2 | * |
3 | * Copyright 2009-2016, LabN Consulting, L.L.C. | |
4 | * | |
5 | * | |
6 | * This program is free software; you can redistribute it and/or | |
7 | * modify it under the terms of the GNU General Public License | |
8 | * as published by the Free Software Foundation; either version 2 | |
9 | * of the License, or (at your option) any later version. | |
10 | * | |
11 | * This program is distributed in the hope that it will be useful, | |
12 | * but WITHOUT ANY WARRANTY; without even the implied warranty of | |
13 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the | |
14 | * GNU General Public License for more details. | |
15 | * | |
896014f4 DL |
16 | * You should have received a copy of the GNU General Public License along |
17 | * with this program; see the file COPYING; if not, write to the Free Software | |
18 | * Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA | |
65efcfce LB |
19 | */ |
20 | ||
21 | /* | |
22 | * File: vnc_zebra.c | |
23 | * Purpose: Handle exchange of routes between VNC and Zebra | |
24 | */ | |
25 | ||
f8b6f499 LB |
26 | #include "lib/zebra.h" |
27 | #include "lib/prefix.h" | |
fe08ba7e | 28 | #include "lib/agg_table.h" |
f8b6f499 LB |
29 | #include "lib/log.h" |
30 | #include "lib/command.h" | |
31 | #include "lib/zclient.h" | |
32 | #include "lib/stream.h" | |
74ffbfe6 | 33 | #include "lib/ringbuf.h" |
f8b6f499 | 34 | #include "lib/memory.h" |
02705213 | 35 | #include "lib/lib_errors.h" |
65efcfce | 36 | |
f8b6f499 LB |
37 | #include "bgpd/bgpd.h" |
38 | #include "bgpd/bgp_ecommunity.h" | |
39 | #include "bgpd/bgp_route.h" | |
40 | #include "bgpd/bgp_debug.h" | |
41 | #include "bgpd/bgp_advertise.h" | |
65efcfce | 42 | |
f8b6f499 LB |
43 | #include "bgpd/rfapi/bgp_rfapi_cfg.h" |
44 | #include "bgpd/rfapi/rfapi.h" | |
45 | #include "bgpd/rfapi/rfapi_import.h" | |
46 | #include "bgpd/rfapi/rfapi_private.h" | |
47 | #include "bgpd/rfapi/vnc_zebra.h" | |
48 | #include "bgpd/rfapi/rfapi_vty.h" | |
49 | #include "bgpd/rfapi/rfapi_backend.h" | |
a3b55c25 | 50 | #include "bgpd/rfapi/vnc_debug.h" |
65efcfce | 51 | |
d62a17ae | 52 | static struct rfapi_descriptor vncHD1VR; /* Single-VR export dummy nve descr */ |
65efcfce LB |
53 | static struct zclient *zclient_vnc = NULL; |
54 | ||
55 | /*********************************************************************** | |
56 | * REDISTRIBUTE: Zebra sends updates/withdraws to BGPD | |
57 | ***********************************************************************/ | |
58 | ||
59 | /* | |
60 | * Routes coming from zebra get added to VNC here | |
61 | */ | |
d7c0a89a | 62 | static void vnc_redistribute_add(struct prefix *p, uint32_t metric, |
74489921 | 63 | uint8_t type) |
65efcfce | 64 | { |
d62a17ae | 65 | struct bgp *bgp = bgp_get_default(); |
66 | struct prefix_rd prd; | |
67 | struct rfapi_ip_addr vnaddr; | |
68 | afi_t afi; | |
69 | uint32_t local_pref = | |
70 | rfp_cost_to_localpref(metric > 255 ? 255 : metric); | |
71 | ||
72 | if (!bgp) | |
73 | return; | |
74 | ||
75 | if (!bgp->rfapi_cfg) { | |
76 | vnc_zlog_debug_verbose("%s: bgp->rfapi_cfg is NULL, skipping", | |
77 | __func__); | |
78 | return; | |
79 | } | |
80 | ||
81 | afi = family2afi(p->family); | |
82 | if (!afi) { | |
83 | vnc_zlog_debug_verbose("%s: unknown prefix address family %d", | |
84 | __func__, p->family); | |
85 | return; | |
86 | } | |
87 | ||
88 | if (!bgp->rfapi_cfg->redist[afi][type]) { | |
89 | vnc_zlog_debug_verbose( | |
90 | "%s: bgp->rfapi_cfg->redist[afi=%d][type=%d] is 0, skipping", | |
91 | __func__, afi, type); | |
92 | return; | |
93 | } | |
94 | if (!bgp->rfapi_cfg->rfg_redist) { | |
95 | vnc_zlog_debug_verbose("%s: no redist nve group, skipping", | |
96 | __func__); | |
97 | return; | |
98 | } | |
99 | ||
100 | /* | |
101 | * Assume nve group's configured VN address prefix is a host | |
102 | * route which also happens to give the NVE VN address to use | |
103 | * for redistributing into VNC. | |
104 | */ | |
105 | vnaddr.addr_family = bgp->rfapi_cfg->rfg_redist->vn_prefix.family; | |
106 | switch (bgp->rfapi_cfg->rfg_redist->vn_prefix.family) { | |
107 | case AF_INET: | |
108 | if (bgp->rfapi_cfg->rfg_redist->vn_prefix.prefixlen != 32) { | |
109 | vnc_zlog_debug_verbose( | |
110 | "%s: redist nve group VN prefix len (%d) != 32, skipping", | |
111 | __func__, | |
112 | bgp->rfapi_cfg->rfg_redist->vn_prefix | |
113 | .prefixlen); | |
114 | return; | |
115 | } | |
116 | vnaddr.addr.v4 = | |
117 | bgp->rfapi_cfg->rfg_redist->vn_prefix.u.prefix4; | |
118 | break; | |
119 | case AF_INET6: | |
120 | if (bgp->rfapi_cfg->rfg_redist->vn_prefix.prefixlen != 128) { | |
121 | vnc_zlog_debug_verbose( | |
122 | "%s: redist nve group VN prefix len (%d) != 128, skipping", | |
123 | __func__, | |
124 | bgp->rfapi_cfg->rfg_redist->vn_prefix | |
125 | .prefixlen); | |
126 | return; | |
127 | } | |
128 | vnaddr.addr.v6 = | |
129 | bgp->rfapi_cfg->rfg_redist->vn_prefix.u.prefix6; | |
130 | break; | |
131 | default: | |
132 | vnc_zlog_debug_verbose( | |
133 | "%s: no redist nve group VN host prefix configured, skipping", | |
134 | __func__); | |
135 | return; | |
136 | } | |
137 | ||
138 | /* | |
139 | * Assume nve group's configured UN address prefix is a host | |
140 | * route which also happens to give the NVE UN address to use | |
141 | * for redistributing into VNC. | |
142 | */ | |
143 | ||
144 | /* | |
145 | * Set UN address in dummy nve descriptor so add_vnc_route | |
146 | * can use it in VNC tunnel SubTLV | |
147 | */ | |
148 | { | |
149 | struct rfapi_ip_prefix pfx_un; | |
150 | ||
151 | rfapiQprefix2Rprefix(&bgp->rfapi_cfg->rfg_redist->un_prefix, | |
152 | &pfx_un); | |
153 | ||
154 | switch (pfx_un.prefix.addr_family) { | |
155 | case AF_INET: | |
156 | if (pfx_un.length != 32) { | |
157 | vnc_zlog_debug_verbose( | |
158 | "%s: redist nve group UN prefix len (%d) != 32, skipping", | |
159 | __func__, pfx_un.length); | |
160 | return; | |
161 | } | |
162 | break; | |
163 | case AF_INET6: | |
164 | if (pfx_un.length != 128) { | |
165 | vnc_zlog_debug_verbose( | |
166 | "%s: redist nve group UN prefix len (%d) != 128, skipping", | |
167 | __func__, pfx_un.length); | |
168 | return; | |
169 | } | |
170 | break; | |
171 | default: | |
172 | vnc_zlog_debug_verbose( | |
173 | "%s: no redist nve group UN host prefix configured, skipping", | |
174 | __func__); | |
175 | return; | |
176 | } | |
177 | ||
178 | vncHD1VR.un_addr = pfx_un.prefix; | |
179 | ||
180 | if (!vncHD1VR.peer) { | |
181 | /* | |
182 | * Same setup as in rfapi_open() | |
183 | */ | |
184 | vncHD1VR.peer = peer_new(bgp); | |
185 | vncHD1VR.peer->status = | |
186 | Established; /* keep bgp core happy */ | |
187 | bgp_sync_delete(vncHD1VR.peer); /* don't need these */ | |
424ab01d | 188 | |
becedef6 QY |
189 | /* |
190 | * since this peer is not on the I/O thread, this lock | |
191 | * is not strictly necessary, but serves as a reminder | |
192 | * to those who may meddle... | |
193 | */ | |
424ab01d QY |
194 | pthread_mutex_lock(&vncHD1VR.peer->io_mtx); |
195 | { | |
196 | // we don't need any I/O related facilities | |
197 | if (vncHD1VR.peer->ibuf) | |
198 | stream_fifo_free(vncHD1VR.peer->ibuf); | |
199 | if (vncHD1VR.peer->obuf) | |
200 | stream_fifo_free(vncHD1VR.peer->obuf); | |
201 | ||
202 | if (vncHD1VR.peer->ibuf_work) | |
74ffbfe6 | 203 | ringbuf_del(vncHD1VR.peer->ibuf_work); |
424ab01d QY |
204 | if (vncHD1VR.peer->obuf_work) |
205 | stream_free(vncHD1VR.peer->obuf_work); | |
206 | ||
d62a17ae | 207 | vncHD1VR.peer->ibuf = NULL; |
d62a17ae | 208 | vncHD1VR.peer->obuf = NULL; |
424ab01d QY |
209 | vncHD1VR.peer->obuf_work = NULL; |
210 | vncHD1VR.peer->ibuf_work = NULL; | |
d62a17ae | 211 | } |
424ab01d QY |
212 | pthread_mutex_unlock(&vncHD1VR.peer->io_mtx); |
213 | ||
d62a17ae | 214 | /* base code assumes have valid host pointer */ |
215 | vncHD1VR.peer->host = | |
216 | XSTRDUP(MTYPE_BGP_PEER_HOST, ".zebra."); | |
217 | ||
218 | /* Mark peer as belonging to HD */ | |
219 | SET_FLAG(vncHD1VR.peer->flags, PEER_FLAG_IS_RFAPI_HD); | |
220 | } | |
221 | } | |
222 | ||
223 | memset(&prd, 0, sizeof(prd)); | |
224 | prd = bgp->rfapi_cfg->rfg_redist->rd; | |
225 | prd.family = AF_UNSPEC; | |
226 | prd.prefixlen = 64; | |
227 | ||
228 | add_vnc_route(&vncHD1VR, /* cookie + UN addr */ | |
229 | bgp, SAFI_MPLS_VPN, p, &prd, &vnaddr, &local_pref, | |
230 | &(bgp->rfapi_cfg->redist_lifetime), | |
231 | NULL, /* RFP options */ | |
232 | NULL, /* struct rfapi_un_option */ | |
233 | NULL, /* struct rfapi_vn_option */ | |
234 | bgp->rfapi_cfg->rfg_redist->rt_export_list, NULL, | |
235 | NULL, /* label: default */ | |
236 | type, BGP_ROUTE_REDISTRIBUTE, 0); /* flags */ | |
65efcfce LB |
237 | } |
238 | ||
239 | /* | |
240 | * Route deletions from zebra propagate to VNC here | |
241 | */ | |
d62a17ae | 242 | static void vnc_redistribute_delete(struct prefix *p, uint8_t type) |
65efcfce | 243 | { |
d62a17ae | 244 | struct bgp *bgp = bgp_get_default(); |
245 | struct prefix_rd prd; | |
246 | afi_t afi; | |
247 | ||
248 | if (!bgp) | |
249 | return; | |
250 | ||
251 | if (!bgp->rfapi_cfg) { | |
252 | vnc_zlog_debug_verbose("%s: bgp->rfapi_cfg is NULL, skipping", | |
253 | __func__); | |
254 | return; | |
255 | } | |
256 | afi = family2afi(p->family); | |
257 | if (!afi) { | |
258 | vnc_zlog_debug_verbose("%s: unknown prefix address family %d", | |
259 | __func__, p->family); | |
260 | return; | |
261 | } | |
262 | if (!bgp->rfapi_cfg->redist[afi][type]) { | |
263 | vnc_zlog_debug_verbose( | |
264 | "%s: bgp->rfapi_cfg->redist[afi=%d][type=%d] is 0, skipping", | |
265 | __func__, afi, type); | |
266 | return; | |
267 | } | |
268 | if (!bgp->rfapi_cfg->rfg_redist) { | |
269 | vnc_zlog_debug_verbose("%s: no redist nve group, skipping", | |
270 | __func__); | |
271 | return; | |
272 | } | |
273 | ||
274 | memset(&prd, 0, sizeof(prd)); | |
275 | prd = bgp->rfapi_cfg->rfg_redist->rd; | |
276 | prd.family = AF_UNSPEC; | |
277 | prd.prefixlen = 64; | |
278 | ||
279 | del_vnc_route(&vncHD1VR, /* use dummy ptr as cookie */ | |
280 | vncHD1VR.peer, bgp, SAFI_MPLS_VPN, p, &prd, type, | |
281 | BGP_ROUTE_REDISTRIBUTE, NULL, 0); | |
65efcfce LB |
282 | } |
283 | ||
284 | /* | |
285 | * Flush all redistributed routes of type <type> | |
286 | */ | |
d62a17ae | 287 | static void vnc_redistribute_withdraw(struct bgp *bgp, afi_t afi, uint8_t type) |
65efcfce | 288 | { |
d62a17ae | 289 | struct prefix_rd prd; |
290 | struct bgp_table *table; | |
291 | struct bgp_node *prn; | |
292 | struct bgp_node *rn; | |
293 | ||
294 | vnc_zlog_debug_verbose("%s: entry", __func__); | |
295 | ||
296 | if (!bgp) | |
297 | return; | |
298 | if (!bgp->rfapi_cfg) { | |
299 | vnc_zlog_debug_verbose("%s: bgp->rfapi_cfg is NULL, skipping", | |
300 | __func__); | |
301 | return; | |
302 | } | |
303 | ||
304 | /* | |
305 | * Loop over all the RDs | |
306 | */ | |
307 | for (prn = bgp_table_top(bgp->rib[afi][SAFI_MPLS_VPN]); prn; | |
308 | prn = bgp_route_next(prn)) { | |
309 | memset(&prd, 0, sizeof(prd)); | |
310 | prd.family = AF_UNSPEC; | |
311 | prd.prefixlen = 64; | |
312 | memcpy(prd.val, prn->p.u.val, 8); | |
313 | ||
314 | /* This is the per-RD table of prefixes */ | |
315 | table = prn->info; | |
316 | ||
317 | for (rn = bgp_table_top(table); rn; rn = bgp_route_next(rn)) { | |
318 | ||
319 | struct bgp_info *ri; | |
320 | ||
321 | for (ri = rn->info; ri; ri = ri->next) { | |
322 | if (ri->type | |
323 | == type) { /* has matching redist type */ | |
324 | break; | |
325 | } | |
326 | } | |
327 | if (ri) { | |
328 | del_vnc_route( | |
329 | &vncHD1VR, /* use dummy ptr as cookie */ | |
330 | vncHD1VR.peer, bgp, SAFI_MPLS_VPN, | |
331 | &(rn->p), &prd, type, | |
332 | BGP_ROUTE_REDISTRIBUTE, NULL, 0); | |
333 | } | |
334 | } | |
335 | } | |
336 | vnc_zlog_debug_verbose("%s: return", __func__); | |
65efcfce LB |
337 | } |
338 | ||
339 | /* | |
340 | * Zebra route add and delete treatment. | |
341 | * | |
342 | * Assumes 1 nexthop | |
343 | */ | |
74489921 RW |
344 | static int vnc_zebra_read_route(int command, struct zclient *zclient, |
345 | zebra_size_t length, vrf_id_t vrf_id) | |
65efcfce | 346 | { |
74489921 RW |
347 | struct zapi_route api; |
348 | int add; | |
d62a17ae | 349 | |
74489921 RW |
350 | if (zapi_route_decode(zclient->ibuf, &api) < 0) |
351 | return -1; | |
65efcfce | 352 | |
74489921 RW |
353 | /* we completely ignore srcdest routes for now. */ |
354 | if (CHECK_FLAG(api.message, ZAPI_MESSAGE_SRCPFX)) | |
d62a17ae | 355 | return 0; |
356 | ||
74489921 RW |
357 | add = (command == ZEBRA_REDISTRIBUTE_ROUTE_ADD); |
358 | if (add) | |
359 | vnc_redistribute_add(&api.prefix, api.metric, api.type); | |
d62a17ae | 360 | else |
74489921 | 361 | vnc_redistribute_delete(&api.prefix, api.type); |
d62a17ae | 362 | |
74489921 RW |
363 | if (BGP_DEBUG(zebra, ZEBRA)) { |
364 | char buf[PREFIX_STRLEN]; | |
d62a17ae | 365 | |
74489921 RW |
366 | prefix2str(&api.prefix, buf, sizeof(buf)); |
367 | vnc_zlog_debug_verbose( | |
368 | "%s: Zebra rcvd: route delete %s %s metric %u", | |
369 | __func__, zebra_route_string(api.type), buf, | |
370 | api.metric); | |
d62a17ae | 371 | } |
372 | ||
373 | return 0; | |
65efcfce LB |
374 | } |
375 | ||
376 | /*********************************************************************** | |
377 | * vnc_bgp_zebra_*: VNC sends updates/withdraws to Zebra | |
378 | ***********************************************************************/ | |
379 | ||
380 | /* | |
381 | * low-level message builder | |
382 | */ | |
a74e593b RW |
383 | static void vnc_zebra_route_msg(struct prefix *p, unsigned int nhp_count, |
384 | void *nhp_ary, int add) /* 1 = add, 0 = del */ | |
65efcfce | 385 | { |
2ad4f093 RW |
386 | struct zapi_route api; |
387 | struct zapi_nexthop *api_nh; | |
388 | int i; | |
b40c5062 LB |
389 | struct in_addr **nhp_ary4 = nhp_ary; |
390 | struct in6_addr **nhp_ary6 = nhp_ary; | |
2ad4f093 | 391 | |
d62a17ae | 392 | if (!nhp_count) { |
393 | vnc_zlog_debug_verbose("%s: empty nexthop list, skipping", | |
394 | __func__); | |
395 | return; | |
396 | } | |
397 | ||
2ad4f093 RW |
398 | memset(&api, 0, sizeof(api)); |
399 | api.vrf_id = VRF_DEFAULT; | |
400 | api.type = ZEBRA_ROUTE_VNC; | |
401 | api.safi = SAFI_UNICAST; | |
402 | api.prefix = *p; | |
403 | ||
404 | /* Nexthops */ | |
405 | SET_FLAG(api.message, ZAPI_MESSAGE_NEXTHOP); | |
a74e593b RW |
406 | api.nexthop_num = MIN(nhp_count, multipath_num); |
407 | for (i = 0; i < api.nexthop_num; i++) { | |
2ad4f093 RW |
408 | |
409 | api_nh = &api.nexthops[i]; | |
4a7371e9 | 410 | api_nh->vrf_id = VRF_DEFAULT; |
2ad4f093 RW |
411 | switch (p->family) { |
412 | case AF_INET: | |
b40c5062 | 413 | memcpy(&api_nh->gate.ipv4, nhp_ary4[i], |
9913029c RW |
414 | sizeof(api_nh->gate.ipv4)); |
415 | api_nh->type = NEXTHOP_TYPE_IPV4; | |
2ad4f093 RW |
416 | break; |
417 | case AF_INET6: | |
b40c5062 | 418 | memcpy(&api_nh->gate.ipv6, nhp_ary6[i], |
9913029c RW |
419 | sizeof(api_nh->gate.ipv6)); |
420 | api_nh->type = NEXTHOP_TYPE_IPV6; | |
2ad4f093 | 421 | break; |
9913029c | 422 | } |
2ad4f093 | 423 | } |
9913029c | 424 | |
2ad4f093 RW |
425 | if (BGP_DEBUG(zebra, ZEBRA)) { |
426 | char buf[PREFIX_STRLEN]; | |
d62a17ae | 427 | |
2ad4f093 | 428 | prefix2str(&api.prefix, buf, sizeof(buf)); |
d62a17ae | 429 | vnc_zlog_debug_verbose( |
2ad4f093 RW |
430 | "%s: Zebra send: route %s %s, nhp_count=%d", __func__, |
431 | (add ? "add" : "del"), buf, nhp_count); | |
d62a17ae | 432 | } |
2ad4f093 RW |
433 | |
434 | zclient_route_send((add ? ZEBRA_ROUTE_ADD : ZEBRA_ROUTE_DELETE), | |
435 | zclient_vnc, &api); | |
65efcfce LB |
436 | } |
437 | ||
438 | ||
439 | static void | |
d7c0a89a | 440 | nve_list_to_nh_array(uint8_t family, struct list *nve_list, |
a74e593b | 441 | unsigned int *nh_count_ret, |
d62a17ae | 442 | void **nh_ary_ret, /* returned address array */ |
443 | void **nhp_ary_ret) /* returned pointer array */ | |
65efcfce | 444 | { |
d62a17ae | 445 | int nve_count = listcount(nve_list); |
65efcfce | 446 | |
d62a17ae | 447 | *nh_count_ret = 0; |
448 | *nh_ary_ret = NULL; | |
449 | *nhp_ary_ret = NULL; | |
65efcfce | 450 | |
d62a17ae | 451 | if (!nve_count) { |
452 | vnc_zlog_debug_verbose("%s: empty nve_list, skipping", | |
453 | __func__); | |
454 | return; | |
455 | } | |
65efcfce | 456 | |
d62a17ae | 457 | if (family == AF_INET) { |
458 | struct listnode *ln; | |
459 | struct in_addr *iap; | |
460 | struct in_addr **v; | |
65efcfce | 461 | |
d62a17ae | 462 | /* |
463 | * Array of nexthop addresses | |
464 | */ | |
465 | *nh_ary_ret = | |
466 | XCALLOC(MTYPE_TMP, nve_count * sizeof(struct in_addr)); | |
65efcfce | 467 | |
d62a17ae | 468 | /* |
469 | * Array of pointers to nexthop addresses | |
470 | */ | |
471 | *nhp_ary_ret = XCALLOC(MTYPE_TMP, | |
472 | nve_count * sizeof(struct in_addr *)); | |
473 | iap = *nh_ary_ret; | |
474 | v = *nhp_ary_ret; | |
65efcfce | 475 | |
d62a17ae | 476 | for (ln = listhead(nve_list); ln; ln = listnextnode(ln)) { |
65efcfce | 477 | |
d62a17ae | 478 | struct rfapi_descriptor *irfd; |
479 | struct prefix nhp; | |
65efcfce | 480 | |
d62a17ae | 481 | irfd = listgetdata(ln); |
65efcfce | 482 | |
d62a17ae | 483 | if (rfapiRaddr2Qprefix(&irfd->vn_addr, &nhp)) |
484 | continue; | |
65efcfce | 485 | |
d62a17ae | 486 | *iap = nhp.u.prefix4; |
487 | *v = iap; | |
488 | vnc_zlog_debug_verbose( | |
489 | "%s: ipadr: (%p)<-0x%x, ptr: (%p)<-%p", | |
490 | __func__, iap, nhp.u.prefix4.s_addr, v, iap); | |
65efcfce | 491 | |
d62a17ae | 492 | ++iap; |
493 | ++v; | |
494 | ++*nh_count_ret; | |
495 | } | |
65efcfce | 496 | |
d62a17ae | 497 | } else if (family == AF_INET6) { |
65efcfce | 498 | |
d62a17ae | 499 | struct listnode *ln; |
65efcfce | 500 | |
d62a17ae | 501 | *nh_ary_ret = |
502 | XCALLOC(MTYPE_TMP, nve_count * sizeof(struct in6_addr)); | |
65efcfce | 503 | |
d62a17ae | 504 | *nhp_ary_ret = XCALLOC(MTYPE_TMP, |
505 | nve_count * sizeof(struct in6_addr *)); | |
65efcfce | 506 | |
d62a17ae | 507 | for (ln = listhead(nve_list); ln; ln = listnextnode(ln)) { |
65efcfce | 508 | |
d62a17ae | 509 | struct rfapi_descriptor *irfd; |
510 | struct in6_addr *iap = *nh_ary_ret; | |
511 | struct in6_addr **v = *nhp_ary_ret; | |
512 | struct prefix nhp; | |
65efcfce | 513 | |
d62a17ae | 514 | irfd = listgetdata(ln); |
65efcfce | 515 | |
d62a17ae | 516 | if (rfapiRaddr2Qprefix(&irfd->vn_addr, &nhp)) |
517 | continue; | |
65efcfce | 518 | |
d62a17ae | 519 | *iap = nhp.u.prefix6; |
520 | *v = iap; | |
65efcfce | 521 | |
d62a17ae | 522 | ++iap; |
523 | ++v; | |
524 | ++*nh_count_ret; | |
525 | } | |
526 | } | |
65efcfce LB |
527 | } |
528 | ||
d62a17ae | 529 | static void import_table_to_nve_list_zebra(struct bgp *bgp, |
530 | struct rfapi_import_table *it, | |
531 | struct list **nves, uint8_t family) | |
65efcfce | 532 | { |
d62a17ae | 533 | struct listnode *node; |
534 | struct rfapi_rfg_name *rfgn; | |
535 | ||
536 | /* | |
537 | * Loop over the list of NVE-Groups configured for | |
538 | * exporting to direct-bgp. | |
539 | * | |
540 | * Build a list of NVEs that use this import table | |
541 | */ | |
542 | *nves = NULL; | |
543 | for (ALL_LIST_ELEMENTS_RO(bgp->rfapi_cfg->rfg_export_zebra_l, node, | |
544 | rfgn)) { | |
545 | ||
546 | /* | |
547 | * If this NVE-Group's import table matches the current one | |
548 | */ | |
549 | if (rfgn->rfg && rfgn->rfg->nves | |
550 | && rfgn->rfg->rfapi_import_table == it) { | |
551 | ||
552 | nve_group_to_nve_list(rfgn->rfg, nves, family); | |
553 | } | |
554 | } | |
65efcfce LB |
555 | } |
556 | ||
d62a17ae | 557 | static void vnc_zebra_add_del_prefix(struct bgp *bgp, |
558 | struct rfapi_import_table *import_table, | |
fe08ba7e | 559 | struct agg_node *rn, |
d62a17ae | 560 | int add) /* !0 = add, 0 = del */ |
65efcfce | 561 | { |
d62a17ae | 562 | struct list *nves; |
563 | ||
a74e593b | 564 | unsigned int nexthop_count = 0; |
d62a17ae | 565 | void *nh_ary = NULL; |
566 | void *nhp_ary = NULL; | |
567 | ||
568 | vnc_zlog_debug_verbose("%s: entry, add=%d", __func__, add); | |
569 | ||
570 | if (zclient_vnc->sock < 0) | |
571 | return; | |
572 | ||
573 | if (rn->p.family != AF_INET && rn->p.family != AF_INET6) { | |
450971aa | 574 | flog_err(EC_LIB_DEVELOPMENT, |
1c50c1c0 | 575 | "%s: invalid route node addr family", __func__); |
d62a17ae | 576 | return; |
577 | } | |
578 | ||
579 | if (!zclient_vnc->redist[family2afi(rn->p.family)][ZEBRA_ROUTE_VNC]) | |
580 | return; | |
581 | ||
582 | if (!bgp->rfapi_cfg) { | |
583 | vnc_zlog_debug_verbose("%s: bgp->rfapi_cfg is NULL, skipping", | |
584 | __func__); | |
585 | return; | |
586 | } | |
587 | if (!listcount(bgp->rfapi_cfg->rfg_export_zebra_l)) { | |
588 | vnc_zlog_debug_verbose( | |
589 | "%s: no zebra export nve group, skipping", __func__); | |
590 | return; | |
591 | } | |
592 | ||
593 | import_table_to_nve_list_zebra(bgp, import_table, &nves, rn->p.family); | |
594 | ||
595 | if (nves) { | |
596 | nve_list_to_nh_array(rn->p.family, nves, &nexthop_count, | |
597 | &nh_ary, &nhp_ary); | |
598 | ||
6a154c88 | 599 | list_delete(&nves); |
d62a17ae | 600 | |
601 | if (nexthop_count) | |
602 | vnc_zebra_route_msg(&rn->p, nexthop_count, nhp_ary, | |
603 | add); | |
604 | } | |
605 | ||
606 | if (nhp_ary) | |
607 | XFREE(MTYPE_TMP, nhp_ary); | |
608 | if (nh_ary) | |
609 | XFREE(MTYPE_TMP, nh_ary); | |
65efcfce LB |
610 | } |
611 | ||
d62a17ae | 612 | void vnc_zebra_add_prefix(struct bgp *bgp, |
613 | struct rfapi_import_table *import_table, | |
fe08ba7e | 614 | struct agg_node *rn) |
65efcfce | 615 | { |
d62a17ae | 616 | vnc_zebra_add_del_prefix(bgp, import_table, rn, 1); |
65efcfce LB |
617 | } |
618 | ||
d62a17ae | 619 | void vnc_zebra_del_prefix(struct bgp *bgp, |
620 | struct rfapi_import_table *import_table, | |
fe08ba7e | 621 | struct agg_node *rn) |
65efcfce | 622 | { |
d62a17ae | 623 | vnc_zebra_add_del_prefix(bgp, import_table, rn, 0); |
65efcfce LB |
624 | } |
625 | ||
626 | ||
d62a17ae | 627 | static void vnc_zebra_add_del_nve(struct bgp *bgp, struct rfapi_descriptor *rfd, |
628 | int add) /* 0 = del, !0 = add */ | |
65efcfce | 629 | { |
d62a17ae | 630 | struct listnode *node; |
631 | struct rfapi_rfg_name *rfgn; | |
632 | struct rfapi_nve_group_cfg *rfg = rfd->rfg; | |
633 | afi_t afi = family2afi(rfd->vn_addr.addr_family); | |
634 | struct prefix nhp; | |
635 | // struct prefix *nhpp; | |
636 | void *pAddr; | |
637 | ||
638 | vnc_zlog_debug_verbose("%s: entry, add=%d", __func__, add); | |
639 | ||
640 | if (zclient_vnc->sock < 0) | |
641 | return; | |
642 | ||
643 | if (!zclient_vnc->redist[afi][ZEBRA_ROUTE_VNC]) | |
644 | return; | |
645 | ||
646 | if (afi != AFI_IP && afi != AFI_IP6) { | |
450971aa | 647 | flog_err(EC_LIB_DEVELOPMENT, "%s: invalid vn addr family", |
1c50c1c0 | 648 | __func__); |
d62a17ae | 649 | return; |
650 | } | |
651 | ||
652 | if (!bgp) | |
653 | return; | |
654 | if (!bgp->rfapi_cfg) { | |
655 | vnc_zlog_debug_verbose("%s: bgp->rfapi_cfg is NULL, skipping", | |
656 | __func__); | |
657 | return; | |
658 | } | |
659 | ||
660 | if (rfapiRaddr2Qprefix(&rfd->vn_addr, &nhp)) { | |
661 | vnc_zlog_debug_verbose("%s: can't convert vn address, skipping", | |
662 | __func__); | |
663 | return; | |
664 | } | |
665 | ||
666 | pAddr = &nhp.u.prefix4; | |
667 | ||
668 | /* | |
669 | * Loop over the list of NVE-Groups configured for | |
670 | * exporting to zebra and see if this new NVE's | |
671 | * group is among them. | |
672 | */ | |
673 | for (ALL_LIST_ELEMENTS_RO(bgp->rfapi_cfg->rfg_export_zebra_l, node, | |
674 | rfgn)) { | |
675 | ||
676 | /* | |
677 | * Yes, this NVE's group is configured for export to zebra | |
678 | */ | |
679 | if (rfgn->rfg == rfg) { | |
680 | ||
fe08ba7e DS |
681 | struct agg_table *rt = NULL; |
682 | struct agg_node *rn; | |
d62a17ae | 683 | struct rfapi_import_table *import_table; |
684 | import_table = rfg->rfapi_import_table; | |
685 | ||
686 | vnc_zlog_debug_verbose( | |
687 | "%s: this nve's group is in zebra export list", | |
688 | __func__); | |
689 | ||
690 | rt = import_table->imported_vpn[afi]; | |
691 | ||
692 | /* | |
693 | * Walk the NVE-Group's VNC Import table | |
694 | */ | |
fe08ba7e DS |
695 | for (rn = agg_route_top(rt); rn; |
696 | rn = agg_route_next(rn)) { | |
d62a17ae | 697 | |
698 | if (rn->info) { | |
699 | ||
700 | vnc_zlog_debug_verbose( | |
701 | "%s: sending %s", __func__, | |
702 | (add ? "add" : "del")); | |
703 | vnc_zebra_route_msg(&rn->p, 1, &pAddr, | |
704 | add); | |
705 | } | |
706 | } | |
707 | } | |
708 | } | |
65efcfce LB |
709 | } |
710 | ||
d62a17ae | 711 | void vnc_zebra_add_nve(struct bgp *bgp, struct rfapi_descriptor *rfd) |
65efcfce | 712 | { |
d62a17ae | 713 | vnc_zebra_add_del_nve(bgp, rfd, 1); |
65efcfce LB |
714 | } |
715 | ||
d62a17ae | 716 | void vnc_zebra_del_nve(struct bgp *bgp, struct rfapi_descriptor *rfd) |
65efcfce | 717 | { |
d62a17ae | 718 | vnc_zebra_add_del_nve(bgp, rfd, 0); |
65efcfce LB |
719 | } |
720 | ||
d62a17ae | 721 | static void vnc_zebra_add_del_group_afi(struct bgp *bgp, |
722 | struct rfapi_nve_group_cfg *rfg, | |
723 | afi_t afi, int add) | |
65efcfce | 724 | { |
fe08ba7e DS |
725 | struct agg_table *rt = NULL; |
726 | struct agg_node *rn; | |
d62a17ae | 727 | struct rfapi_import_table *import_table; |
728 | uint8_t family = afi2family(afi); | |
729 | ||
730 | struct list *nves = NULL; | |
a74e593b | 731 | unsigned int nexthop_count = 0; |
d62a17ae | 732 | void *nh_ary = NULL; |
733 | void *nhp_ary = NULL; | |
734 | ||
735 | vnc_zlog_debug_verbose("%s: entry", __func__); | |
736 | import_table = rfg->rfapi_import_table; | |
737 | if (!import_table) { | |
738 | vnc_zlog_debug_verbose( | |
739 | "%s: import table not defined, returning", __func__); | |
740 | return; | |
741 | } | |
742 | ||
743 | if (afi == AFI_IP || afi == AFI_IP6) { | |
744 | rt = import_table->imported_vpn[afi]; | |
745 | } else { | |
450971aa | 746 | flog_err(EC_LIB_DEVELOPMENT, "%s: bad afi %d", __func__, afi); |
d62a17ae | 747 | return; |
748 | } | |
749 | ||
750 | if (!family) { | |
450971aa | 751 | flog_err(EC_LIB_DEVELOPMENT, "%s: computed bad family: %d", |
1c50c1c0 | 752 | __func__, family); |
d62a17ae | 753 | return; |
754 | } | |
755 | ||
756 | if (!rfg->nves) { | |
757 | /* avoid segfault below if list doesn't exist */ | |
758 | vnc_zlog_debug_verbose("%s: no NVEs in this group", __func__); | |
759 | return; | |
760 | } | |
761 | ||
762 | nve_group_to_nve_list(rfg, &nves, family); | |
763 | if (nves) { | |
764 | vnc_zlog_debug_verbose("%s: have nves", __func__); | |
765 | nve_list_to_nh_array(family, nves, &nexthop_count, &nh_ary, | |
766 | &nhp_ary); | |
767 | ||
768 | vnc_zlog_debug_verbose("%s: family: %d, nve count: %d", | |
769 | __func__, family, nexthop_count); | |
770 | ||
6a154c88 | 771 | list_delete(&nves); |
d62a17ae | 772 | |
773 | if (nexthop_count) { | |
774 | /* | |
775 | * Walk the NVE-Group's VNC Import table | |
776 | */ | |
fe08ba7e DS |
777 | for (rn = agg_route_top(rt); rn; |
778 | rn = agg_route_next(rn)) { | |
d62a17ae | 779 | if (rn->info) { |
780 | vnc_zebra_route_msg(&rn->p, | |
781 | nexthop_count, | |
782 | nhp_ary, add); | |
783 | } | |
784 | } | |
785 | } | |
786 | if (nhp_ary) | |
787 | XFREE(MTYPE_TMP, nhp_ary); | |
788 | if (nh_ary) | |
789 | XFREE(MTYPE_TMP, nh_ary); | |
790 | } | |
65efcfce LB |
791 | } |
792 | ||
d62a17ae | 793 | void vnc_zebra_add_group(struct bgp *bgp, struct rfapi_nve_group_cfg *rfg) |
65efcfce | 794 | { |
d62a17ae | 795 | vnc_zebra_add_del_group_afi(bgp, rfg, AFI_IP, 1); |
796 | vnc_zebra_add_del_group_afi(bgp, rfg, AFI_IP6, 1); | |
65efcfce LB |
797 | } |
798 | ||
d62a17ae | 799 | void vnc_zebra_del_group(struct bgp *bgp, struct rfapi_nve_group_cfg *rfg) |
65efcfce | 800 | { |
d62a17ae | 801 | vnc_zlog_debug_verbose("%s: entry", __func__); |
802 | vnc_zebra_add_del_group_afi(bgp, rfg, AFI_IP, 0); | |
803 | vnc_zebra_add_del_group_afi(bgp, rfg, AFI_IP6, 0); | |
65efcfce LB |
804 | } |
805 | ||
d62a17ae | 806 | void vnc_zebra_reexport_group_afi(struct bgp *bgp, |
807 | struct rfapi_nve_group_cfg *rfg, afi_t afi) | |
65efcfce | 808 | { |
d62a17ae | 809 | struct listnode *node; |
810 | struct rfapi_rfg_name *rfgn; | |
811 | ||
812 | for (ALL_LIST_ELEMENTS_RO(bgp->rfapi_cfg->rfg_export_zebra_l, node, | |
813 | rfgn)) { | |
814 | ||
815 | if (rfgn->rfg == rfg) { | |
816 | vnc_zebra_add_del_group_afi(bgp, rfg, afi, 0); | |
817 | vnc_zebra_add_del_group_afi(bgp, rfg, afi, 1); | |
818 | break; | |
819 | } | |
820 | } | |
65efcfce LB |
821 | } |
822 | ||
823 | ||
824 | /*********************************************************************** | |
825 | * CONTROL INTERFACE | |
826 | ***********************************************************************/ | |
827 | ||
828 | ||
829 | /* Other routes redistribution into BGP. */ | |
d62a17ae | 830 | int vnc_redistribute_set(struct bgp *bgp, afi_t afi, int type) |
65efcfce | 831 | { |
d62a17ae | 832 | if (!bgp->rfapi_cfg) { |
833 | return CMD_WARNING_CONFIG_FAILED; | |
834 | } | |
65efcfce | 835 | |
d62a17ae | 836 | /* Set flag to BGP instance. */ |
837 | bgp->rfapi_cfg->redist[afi][type] = 1; | |
65efcfce | 838 | |
d62a17ae | 839 | // bgp->redist[afi][type] = 1; |
65efcfce | 840 | |
d62a17ae | 841 | /* Return if already redistribute flag is set. */ |
842 | if (zclient_vnc->redist[afi][type]) | |
843 | return CMD_WARNING_CONFIG_FAILED; | |
65efcfce | 844 | |
d62a17ae | 845 | vrf_bitmap_set(zclient_vnc->redist[afi][type], VRF_DEFAULT); |
65efcfce | 846 | |
d62a17ae | 847 | // zclient_vnc->redist[afi][type] = 1; |
65efcfce | 848 | |
d62a17ae | 849 | /* Return if zebra connection is not established. */ |
850 | if (zclient_vnc->sock < 0) | |
851 | return CMD_WARNING_CONFIG_FAILED; | |
65efcfce | 852 | |
d62a17ae | 853 | if (BGP_DEBUG(zebra, ZEBRA)) |
854 | vnc_zlog_debug_verbose("Zebra send: redistribute add %s", | |
855 | zebra_route_string(type)); | |
65efcfce | 856 | |
d62a17ae | 857 | /* Send distribute add message to zebra. */ |
858 | zebra_redistribute_send(ZEBRA_REDISTRIBUTE_ADD, zclient_vnc, afi, type, | |
859 | 0, VRF_DEFAULT); | |
65efcfce | 860 | |
d62a17ae | 861 | return CMD_SUCCESS; |
65efcfce LB |
862 | } |
863 | ||
864 | /* Unset redistribution. */ | |
d62a17ae | 865 | int vnc_redistribute_unset(struct bgp *bgp, afi_t afi, int type) |
65efcfce | 866 | { |
d62a17ae | 867 | vnc_zlog_debug_verbose("%s: type=%d entry", __func__, type); |
868 | ||
869 | if (!bgp->rfapi_cfg) { | |
870 | vnc_zlog_debug_verbose("%s: return (no rfapi_cfg)", __func__); | |
871 | return CMD_WARNING_CONFIG_FAILED; | |
872 | } | |
873 | ||
874 | /* Unset flag from BGP instance. */ | |
875 | bgp->rfapi_cfg->redist[afi][type] = 0; | |
876 | ||
877 | /* Return if zebra connection is disabled. */ | |
878 | if (!zclient_vnc->redist[afi][type]) | |
879 | return CMD_WARNING_CONFIG_FAILED; | |
880 | zclient_vnc->redist[afi][type] = 0; | |
881 | ||
882 | if (bgp->rfapi_cfg->redist[AFI_IP][type] == 0 | |
883 | && bgp->rfapi_cfg->redist[AFI_IP6][type] == 0 | |
884 | && zclient_vnc->sock >= 0) { | |
885 | /* Send distribute delete message to zebra. */ | |
886 | if (BGP_DEBUG(zebra, ZEBRA)) | |
887 | vnc_zlog_debug_verbose( | |
888 | "Zebra send: redistribute delete %s", | |
889 | zebra_route_string(type)); | |
890 | zebra_redistribute_send(ZEBRA_REDISTRIBUTE_DELETE, zclient_vnc, | |
891 | afi, type, 0, VRF_DEFAULT); | |
892 | } | |
893 | ||
894 | /* Withdraw redistributed routes from current BGP's routing table. */ | |
895 | vnc_redistribute_withdraw(bgp, afi, type); | |
896 | ||
897 | vnc_zlog_debug_verbose("%s: return", __func__); | |
898 | ||
899 | return CMD_SUCCESS; | |
65efcfce LB |
900 | } |
901 | ||
342213ea | 902 | extern struct zebra_privs_t bgpd_privs; |
65efcfce LB |
903 | |
904 | /* | |
905 | * Modeled after bgp_zebra.c'bgp_zebra_init() | |
906 | * Charriere asks, "Is it possible to carry two?" | |
907 | */ | |
d62a17ae | 908 | void vnc_zebra_init(struct thread_master *master) |
65efcfce | 909 | { |
d62a17ae | 910 | /* Set default values. */ |
e1a1880d | 911 | zclient_vnc = zclient_new_notify(master, &zclient_options_default); |
342213ea | 912 | zclient_init(zclient_vnc, ZEBRA_ROUTE_VNC, 0, &bgpd_privs); |
d62a17ae | 913 | |
74489921 RW |
914 | zclient_vnc->redistribute_route_add = vnc_zebra_read_route; |
915 | zclient_vnc->redistribute_route_del = vnc_zebra_read_route; | |
65efcfce LB |
916 | } |
917 | ||
d62a17ae | 918 | void vnc_zebra_destroy(void) |
65efcfce | 919 | { |
d62a17ae | 920 | if (zclient_vnc == NULL) |
921 | return; | |
922 | zclient_stop(zclient_vnc); | |
923 | zclient_free(zclient_vnc); | |
924 | zclient_vnc = NULL; | |
65efcfce | 925 | } |