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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" | |
28 | #include "lib/table.h" | |
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" |
65efcfce | 35 | |
f8b6f499 LB |
36 | #include "bgpd/bgpd.h" |
37 | #include "bgpd/bgp_ecommunity.h" | |
38 | #include "bgpd/bgp_route.h" | |
39 | #include "bgpd/bgp_debug.h" | |
40 | #include "bgpd/bgp_advertise.h" | |
65efcfce | 41 | |
f8b6f499 LB |
42 | #include "bgpd/rfapi/bgp_rfapi_cfg.h" |
43 | #include "bgpd/rfapi/rfapi.h" | |
44 | #include "bgpd/rfapi/rfapi_import.h" | |
45 | #include "bgpd/rfapi/rfapi_private.h" | |
46 | #include "bgpd/rfapi/vnc_zebra.h" | |
47 | #include "bgpd/rfapi/rfapi_vty.h" | |
48 | #include "bgpd/rfapi/rfapi_backend.h" | |
a3b55c25 | 49 | #include "bgpd/rfapi/vnc_debug.h" |
65efcfce | 50 | |
d62a17ae | 51 | static struct rfapi_descriptor vncHD1VR; /* Single-VR export dummy nve descr */ |
65efcfce LB |
52 | static struct zclient *zclient_vnc = NULL; |
53 | ||
54 | /*********************************************************************** | |
55 | * REDISTRIBUTE: Zebra sends updates/withdraws to BGPD | |
56 | ***********************************************************************/ | |
57 | ||
58 | /* | |
59 | * Routes coming from zebra get added to VNC here | |
60 | */ | |
d7c0a89a | 61 | static void vnc_redistribute_add(struct prefix *p, uint32_t metric, |
74489921 | 62 | uint8_t type) |
65efcfce | 63 | { |
d62a17ae | 64 | struct bgp *bgp = bgp_get_default(); |
65 | struct prefix_rd prd; | |
66 | struct rfapi_ip_addr vnaddr; | |
67 | afi_t afi; | |
68 | uint32_t local_pref = | |
69 | rfp_cost_to_localpref(metric > 255 ? 255 : metric); | |
70 | ||
71 | if (!bgp) | |
72 | return; | |
73 | ||
74 | if (!bgp->rfapi_cfg) { | |
75 | vnc_zlog_debug_verbose("%s: bgp->rfapi_cfg is NULL, skipping", | |
76 | __func__); | |
77 | return; | |
78 | } | |
79 | ||
80 | afi = family2afi(p->family); | |
81 | if (!afi) { | |
82 | vnc_zlog_debug_verbose("%s: unknown prefix address family %d", | |
83 | __func__, p->family); | |
84 | return; | |
85 | } | |
86 | ||
87 | if (!bgp->rfapi_cfg->redist[afi][type]) { | |
88 | vnc_zlog_debug_verbose( | |
89 | "%s: bgp->rfapi_cfg->redist[afi=%d][type=%d] is 0, skipping", | |
90 | __func__, afi, type); | |
91 | return; | |
92 | } | |
93 | if (!bgp->rfapi_cfg->rfg_redist) { | |
94 | vnc_zlog_debug_verbose("%s: no redist nve group, skipping", | |
95 | __func__); | |
96 | return; | |
97 | } | |
98 | ||
99 | /* | |
100 | * Assume nve group's configured VN address prefix is a host | |
101 | * route which also happens to give the NVE VN address to use | |
102 | * for redistributing into VNC. | |
103 | */ | |
104 | vnaddr.addr_family = bgp->rfapi_cfg->rfg_redist->vn_prefix.family; | |
105 | switch (bgp->rfapi_cfg->rfg_redist->vn_prefix.family) { | |
106 | case AF_INET: | |
107 | if (bgp->rfapi_cfg->rfg_redist->vn_prefix.prefixlen != 32) { | |
108 | vnc_zlog_debug_verbose( | |
109 | "%s: redist nve group VN prefix len (%d) != 32, skipping", | |
110 | __func__, | |
111 | bgp->rfapi_cfg->rfg_redist->vn_prefix | |
112 | .prefixlen); | |
113 | return; | |
114 | } | |
115 | vnaddr.addr.v4 = | |
116 | bgp->rfapi_cfg->rfg_redist->vn_prefix.u.prefix4; | |
117 | break; | |
118 | case AF_INET6: | |
119 | if (bgp->rfapi_cfg->rfg_redist->vn_prefix.prefixlen != 128) { | |
120 | vnc_zlog_debug_verbose( | |
121 | "%s: redist nve group VN prefix len (%d) != 128, skipping", | |
122 | __func__, | |
123 | bgp->rfapi_cfg->rfg_redist->vn_prefix | |
124 | .prefixlen); | |
125 | return; | |
126 | } | |
127 | vnaddr.addr.v6 = | |
128 | bgp->rfapi_cfg->rfg_redist->vn_prefix.u.prefix6; | |
129 | break; | |
130 | default: | |
131 | vnc_zlog_debug_verbose( | |
132 | "%s: no redist nve group VN host prefix configured, skipping", | |
133 | __func__); | |
134 | return; | |
135 | } | |
136 | ||
137 | /* | |
138 | * Assume nve group's configured UN address prefix is a host | |
139 | * route which also happens to give the NVE UN address to use | |
140 | * for redistributing into VNC. | |
141 | */ | |
142 | ||
143 | /* | |
144 | * Set UN address in dummy nve descriptor so add_vnc_route | |
145 | * can use it in VNC tunnel SubTLV | |
146 | */ | |
147 | { | |
148 | struct rfapi_ip_prefix pfx_un; | |
149 | ||
150 | rfapiQprefix2Rprefix(&bgp->rfapi_cfg->rfg_redist->un_prefix, | |
151 | &pfx_un); | |
152 | ||
153 | switch (pfx_un.prefix.addr_family) { | |
154 | case AF_INET: | |
155 | if (pfx_un.length != 32) { | |
156 | vnc_zlog_debug_verbose( | |
157 | "%s: redist nve group UN prefix len (%d) != 32, skipping", | |
158 | __func__, pfx_un.length); | |
159 | return; | |
160 | } | |
161 | break; | |
162 | case AF_INET6: | |
163 | if (pfx_un.length != 128) { | |
164 | vnc_zlog_debug_verbose( | |
165 | "%s: redist nve group UN prefix len (%d) != 128, skipping", | |
166 | __func__, pfx_un.length); | |
167 | return; | |
168 | } | |
169 | break; | |
170 | default: | |
171 | vnc_zlog_debug_verbose( | |
172 | "%s: no redist nve group UN host prefix configured, skipping", | |
173 | __func__); | |
174 | return; | |
175 | } | |
176 | ||
177 | vncHD1VR.un_addr = pfx_un.prefix; | |
178 | ||
179 | if (!vncHD1VR.peer) { | |
180 | /* | |
181 | * Same setup as in rfapi_open() | |
182 | */ | |
183 | vncHD1VR.peer = peer_new(bgp); | |
184 | vncHD1VR.peer->status = | |
185 | Established; /* keep bgp core happy */ | |
186 | bgp_sync_delete(vncHD1VR.peer); /* don't need these */ | |
424ab01d | 187 | |
becedef6 QY |
188 | /* |
189 | * since this peer is not on the I/O thread, this lock | |
190 | * is not strictly necessary, but serves as a reminder | |
191 | * to those who may meddle... | |
192 | */ | |
424ab01d QY |
193 | pthread_mutex_lock(&vncHD1VR.peer->io_mtx); |
194 | { | |
195 | // we don't need any I/O related facilities | |
196 | if (vncHD1VR.peer->ibuf) | |
197 | stream_fifo_free(vncHD1VR.peer->ibuf); | |
198 | if (vncHD1VR.peer->obuf) | |
199 | stream_fifo_free(vncHD1VR.peer->obuf); | |
200 | ||
201 | if (vncHD1VR.peer->ibuf_work) | |
74ffbfe6 | 202 | ringbuf_del(vncHD1VR.peer->ibuf_work); |
424ab01d QY |
203 | if (vncHD1VR.peer->obuf_work) |
204 | stream_free(vncHD1VR.peer->obuf_work); | |
205 | ||
d62a17ae | 206 | vncHD1VR.peer->ibuf = NULL; |
d62a17ae | 207 | vncHD1VR.peer->obuf = NULL; |
424ab01d QY |
208 | vncHD1VR.peer->obuf_work = NULL; |
209 | vncHD1VR.peer->ibuf_work = NULL; | |
d62a17ae | 210 | } |
424ab01d QY |
211 | pthread_mutex_unlock(&vncHD1VR.peer->io_mtx); |
212 | ||
d62a17ae | 213 | /* base code assumes have valid host pointer */ |
214 | vncHD1VR.peer->host = | |
215 | XSTRDUP(MTYPE_BGP_PEER_HOST, ".zebra."); | |
216 | ||
217 | /* Mark peer as belonging to HD */ | |
218 | SET_FLAG(vncHD1VR.peer->flags, PEER_FLAG_IS_RFAPI_HD); | |
219 | } | |
220 | } | |
221 | ||
222 | memset(&prd, 0, sizeof(prd)); | |
223 | prd = bgp->rfapi_cfg->rfg_redist->rd; | |
224 | prd.family = AF_UNSPEC; | |
225 | prd.prefixlen = 64; | |
226 | ||
227 | add_vnc_route(&vncHD1VR, /* cookie + UN addr */ | |
228 | bgp, SAFI_MPLS_VPN, p, &prd, &vnaddr, &local_pref, | |
229 | &(bgp->rfapi_cfg->redist_lifetime), | |
230 | NULL, /* RFP options */ | |
231 | NULL, /* struct rfapi_un_option */ | |
232 | NULL, /* struct rfapi_vn_option */ | |
233 | bgp->rfapi_cfg->rfg_redist->rt_export_list, NULL, | |
234 | NULL, /* label: default */ | |
235 | type, BGP_ROUTE_REDISTRIBUTE, 0); /* flags */ | |
65efcfce LB |
236 | } |
237 | ||
238 | /* | |
239 | * Route deletions from zebra propagate to VNC here | |
240 | */ | |
d62a17ae | 241 | static void vnc_redistribute_delete(struct prefix *p, uint8_t type) |
65efcfce | 242 | { |
d62a17ae | 243 | struct bgp *bgp = bgp_get_default(); |
244 | struct prefix_rd prd; | |
245 | afi_t afi; | |
246 | ||
247 | if (!bgp) | |
248 | return; | |
249 | ||
250 | if (!bgp->rfapi_cfg) { | |
251 | vnc_zlog_debug_verbose("%s: bgp->rfapi_cfg is NULL, skipping", | |
252 | __func__); | |
253 | return; | |
254 | } | |
255 | afi = family2afi(p->family); | |
256 | if (!afi) { | |
257 | vnc_zlog_debug_verbose("%s: unknown prefix address family %d", | |
258 | __func__, p->family); | |
259 | return; | |
260 | } | |
261 | if (!bgp->rfapi_cfg->redist[afi][type]) { | |
262 | vnc_zlog_debug_verbose( | |
263 | "%s: bgp->rfapi_cfg->redist[afi=%d][type=%d] is 0, skipping", | |
264 | __func__, afi, type); | |
265 | return; | |
266 | } | |
267 | if (!bgp->rfapi_cfg->rfg_redist) { | |
268 | vnc_zlog_debug_verbose("%s: no redist nve group, skipping", | |
269 | __func__); | |
270 | return; | |
271 | } | |
272 | ||
273 | memset(&prd, 0, sizeof(prd)); | |
274 | prd = bgp->rfapi_cfg->rfg_redist->rd; | |
275 | prd.family = AF_UNSPEC; | |
276 | prd.prefixlen = 64; | |
277 | ||
278 | del_vnc_route(&vncHD1VR, /* use dummy ptr as cookie */ | |
279 | vncHD1VR.peer, bgp, SAFI_MPLS_VPN, p, &prd, type, | |
280 | BGP_ROUTE_REDISTRIBUTE, NULL, 0); | |
65efcfce LB |
281 | } |
282 | ||
283 | /* | |
284 | * Flush all redistributed routes of type <type> | |
285 | */ | |
d62a17ae | 286 | static void vnc_redistribute_withdraw(struct bgp *bgp, afi_t afi, uint8_t type) |
65efcfce | 287 | { |
d62a17ae | 288 | struct prefix_rd prd; |
289 | struct bgp_table *table; | |
290 | struct bgp_node *prn; | |
291 | struct bgp_node *rn; | |
292 | ||
293 | vnc_zlog_debug_verbose("%s: entry", __func__); | |
294 | ||
295 | if (!bgp) | |
296 | return; | |
297 | if (!bgp->rfapi_cfg) { | |
298 | vnc_zlog_debug_verbose("%s: bgp->rfapi_cfg is NULL, skipping", | |
299 | __func__); | |
300 | return; | |
301 | } | |
302 | ||
303 | /* | |
304 | * Loop over all the RDs | |
305 | */ | |
306 | for (prn = bgp_table_top(bgp->rib[afi][SAFI_MPLS_VPN]); prn; | |
307 | prn = bgp_route_next(prn)) { | |
308 | memset(&prd, 0, sizeof(prd)); | |
309 | prd.family = AF_UNSPEC; | |
310 | prd.prefixlen = 64; | |
311 | memcpy(prd.val, prn->p.u.val, 8); | |
312 | ||
313 | /* This is the per-RD table of prefixes */ | |
314 | table = prn->info; | |
315 | ||
316 | for (rn = bgp_table_top(table); rn; rn = bgp_route_next(rn)) { | |
317 | ||
318 | struct bgp_info *ri; | |
319 | ||
320 | for (ri = rn->info; ri; ri = ri->next) { | |
321 | if (ri->type | |
322 | == type) { /* has matching redist type */ | |
323 | break; | |
324 | } | |
325 | } | |
326 | if (ri) { | |
327 | del_vnc_route( | |
328 | &vncHD1VR, /* use dummy ptr as cookie */ | |
329 | vncHD1VR.peer, bgp, SAFI_MPLS_VPN, | |
330 | &(rn->p), &prd, type, | |
331 | BGP_ROUTE_REDISTRIBUTE, NULL, 0); | |
332 | } | |
333 | } | |
334 | } | |
335 | vnc_zlog_debug_verbose("%s: return", __func__); | |
65efcfce LB |
336 | } |
337 | ||
338 | /* | |
339 | * Zebra route add and delete treatment. | |
340 | * | |
341 | * Assumes 1 nexthop | |
342 | */ | |
74489921 RW |
343 | static int vnc_zebra_read_route(int command, struct zclient *zclient, |
344 | zebra_size_t length, vrf_id_t vrf_id) | |
65efcfce | 345 | { |
74489921 RW |
346 | struct zapi_route api; |
347 | int add; | |
d62a17ae | 348 | |
74489921 RW |
349 | if (zapi_route_decode(zclient->ibuf, &api) < 0) |
350 | return -1; | |
65efcfce | 351 | |
74489921 RW |
352 | /* we completely ignore srcdest routes for now. */ |
353 | if (CHECK_FLAG(api.message, ZAPI_MESSAGE_SRCPFX)) | |
d62a17ae | 354 | return 0; |
355 | ||
74489921 RW |
356 | add = (command == ZEBRA_REDISTRIBUTE_ROUTE_ADD); |
357 | if (add) | |
358 | vnc_redistribute_add(&api.prefix, api.metric, api.type); | |
d62a17ae | 359 | else |
74489921 | 360 | vnc_redistribute_delete(&api.prefix, api.type); |
d62a17ae | 361 | |
74489921 RW |
362 | if (BGP_DEBUG(zebra, ZEBRA)) { |
363 | char buf[PREFIX_STRLEN]; | |
d62a17ae | 364 | |
74489921 RW |
365 | prefix2str(&api.prefix, buf, sizeof(buf)); |
366 | vnc_zlog_debug_verbose( | |
367 | "%s: Zebra rcvd: route delete %s %s metric %u", | |
368 | __func__, zebra_route_string(api.type), buf, | |
369 | api.metric); | |
d62a17ae | 370 | } |
371 | ||
372 | return 0; | |
65efcfce LB |
373 | } |
374 | ||
375 | /*********************************************************************** | |
376 | * vnc_bgp_zebra_*: VNC sends updates/withdraws to Zebra | |
377 | ***********************************************************************/ | |
378 | ||
379 | /* | |
380 | * low-level message builder | |
381 | */ | |
a74e593b RW |
382 | static void vnc_zebra_route_msg(struct prefix *p, unsigned int nhp_count, |
383 | void *nhp_ary, int add) /* 1 = add, 0 = del */ | |
65efcfce | 384 | { |
2ad4f093 RW |
385 | struct zapi_route api; |
386 | struct zapi_nexthop *api_nh; | |
387 | int i; | |
b40c5062 LB |
388 | struct in_addr **nhp_ary4 = nhp_ary; |
389 | struct in6_addr **nhp_ary6 = nhp_ary; | |
2ad4f093 | 390 | |
d62a17ae | 391 | if (!nhp_count) { |
392 | vnc_zlog_debug_verbose("%s: empty nexthop list, skipping", | |
393 | __func__); | |
394 | return; | |
395 | } | |
396 | ||
2ad4f093 RW |
397 | memset(&api, 0, sizeof(api)); |
398 | api.vrf_id = VRF_DEFAULT; | |
399 | api.type = ZEBRA_ROUTE_VNC; | |
400 | api.safi = SAFI_UNICAST; | |
401 | api.prefix = *p; | |
402 | ||
403 | /* Nexthops */ | |
404 | SET_FLAG(api.message, ZAPI_MESSAGE_NEXTHOP); | |
a74e593b RW |
405 | api.nexthop_num = MIN(nhp_count, multipath_num); |
406 | for (i = 0; i < api.nexthop_num; i++) { | |
2ad4f093 RW |
407 | |
408 | api_nh = &api.nexthops[i]; | |
4a7371e9 | 409 | api_nh->vrf_id = VRF_DEFAULT; |
2ad4f093 RW |
410 | switch (p->family) { |
411 | case AF_INET: | |
b40c5062 | 412 | memcpy(&api_nh->gate.ipv4, nhp_ary4[i], |
9913029c RW |
413 | sizeof(api_nh->gate.ipv4)); |
414 | api_nh->type = NEXTHOP_TYPE_IPV4; | |
2ad4f093 RW |
415 | break; |
416 | case AF_INET6: | |
b40c5062 | 417 | memcpy(&api_nh->gate.ipv6, nhp_ary6[i], |
9913029c RW |
418 | sizeof(api_nh->gate.ipv6)); |
419 | api_nh->type = NEXTHOP_TYPE_IPV6; | |
2ad4f093 | 420 | break; |
9913029c | 421 | } |
2ad4f093 | 422 | } |
9913029c | 423 | |
2ad4f093 RW |
424 | if (BGP_DEBUG(zebra, ZEBRA)) { |
425 | char buf[PREFIX_STRLEN]; | |
d62a17ae | 426 | |
2ad4f093 | 427 | prefix2str(&api.prefix, buf, sizeof(buf)); |
d62a17ae | 428 | vnc_zlog_debug_verbose( |
2ad4f093 RW |
429 | "%s: Zebra send: route %s %s, nhp_count=%d", __func__, |
430 | (add ? "add" : "del"), buf, nhp_count); | |
d62a17ae | 431 | } |
2ad4f093 RW |
432 | |
433 | zclient_route_send((add ? ZEBRA_ROUTE_ADD : ZEBRA_ROUTE_DELETE), | |
434 | zclient_vnc, &api); | |
65efcfce LB |
435 | } |
436 | ||
437 | ||
438 | static void | |
d7c0a89a | 439 | nve_list_to_nh_array(uint8_t family, struct list *nve_list, |
a74e593b | 440 | unsigned int *nh_count_ret, |
d62a17ae | 441 | void **nh_ary_ret, /* returned address array */ |
442 | void **nhp_ary_ret) /* returned pointer array */ | |
65efcfce | 443 | { |
d62a17ae | 444 | int nve_count = listcount(nve_list); |
65efcfce | 445 | |
d62a17ae | 446 | *nh_count_ret = 0; |
447 | *nh_ary_ret = NULL; | |
448 | *nhp_ary_ret = NULL; | |
65efcfce | 449 | |
d62a17ae | 450 | if (!nve_count) { |
451 | vnc_zlog_debug_verbose("%s: empty nve_list, skipping", | |
452 | __func__); | |
453 | return; | |
454 | } | |
65efcfce | 455 | |
d62a17ae | 456 | if (family == AF_INET) { |
457 | struct listnode *ln; | |
458 | struct in_addr *iap; | |
459 | struct in_addr **v; | |
65efcfce | 460 | |
d62a17ae | 461 | /* |
462 | * Array of nexthop addresses | |
463 | */ | |
464 | *nh_ary_ret = | |
465 | XCALLOC(MTYPE_TMP, nve_count * sizeof(struct in_addr)); | |
65efcfce | 466 | |
d62a17ae | 467 | /* |
468 | * Array of pointers to nexthop addresses | |
469 | */ | |
470 | *nhp_ary_ret = XCALLOC(MTYPE_TMP, | |
471 | nve_count * sizeof(struct in_addr *)); | |
472 | iap = *nh_ary_ret; | |
473 | v = *nhp_ary_ret; | |
65efcfce | 474 | |
d62a17ae | 475 | for (ln = listhead(nve_list); ln; ln = listnextnode(ln)) { |
65efcfce | 476 | |
d62a17ae | 477 | struct rfapi_descriptor *irfd; |
478 | struct prefix nhp; | |
65efcfce | 479 | |
d62a17ae | 480 | irfd = listgetdata(ln); |
65efcfce | 481 | |
d62a17ae | 482 | if (rfapiRaddr2Qprefix(&irfd->vn_addr, &nhp)) |
483 | continue; | |
65efcfce | 484 | |
d62a17ae | 485 | *iap = nhp.u.prefix4; |
486 | *v = iap; | |
487 | vnc_zlog_debug_verbose( | |
488 | "%s: ipadr: (%p)<-0x%x, ptr: (%p)<-%p", | |
489 | __func__, iap, nhp.u.prefix4.s_addr, v, iap); | |
65efcfce | 490 | |
d62a17ae | 491 | ++iap; |
492 | ++v; | |
493 | ++*nh_count_ret; | |
494 | } | |
65efcfce | 495 | |
d62a17ae | 496 | } else if (family == AF_INET6) { |
65efcfce | 497 | |
d62a17ae | 498 | struct listnode *ln; |
65efcfce | 499 | |
d62a17ae | 500 | *nh_ary_ret = |
501 | XCALLOC(MTYPE_TMP, nve_count * sizeof(struct in6_addr)); | |
65efcfce | 502 | |
d62a17ae | 503 | *nhp_ary_ret = XCALLOC(MTYPE_TMP, |
504 | nve_count * sizeof(struct in6_addr *)); | |
65efcfce | 505 | |
d62a17ae | 506 | for (ln = listhead(nve_list); ln; ln = listnextnode(ln)) { |
65efcfce | 507 | |
d62a17ae | 508 | struct rfapi_descriptor *irfd; |
509 | struct in6_addr *iap = *nh_ary_ret; | |
510 | struct in6_addr **v = *nhp_ary_ret; | |
511 | struct prefix nhp; | |
65efcfce | 512 | |
d62a17ae | 513 | irfd = listgetdata(ln); |
65efcfce | 514 | |
d62a17ae | 515 | if (rfapiRaddr2Qprefix(&irfd->vn_addr, &nhp)) |
516 | continue; | |
65efcfce | 517 | |
d62a17ae | 518 | *iap = nhp.u.prefix6; |
519 | *v = iap; | |
65efcfce | 520 | |
d62a17ae | 521 | ++iap; |
522 | ++v; | |
523 | ++*nh_count_ret; | |
524 | } | |
525 | } | |
65efcfce LB |
526 | } |
527 | ||
d62a17ae | 528 | static void import_table_to_nve_list_zebra(struct bgp *bgp, |
529 | struct rfapi_import_table *it, | |
530 | struct list **nves, uint8_t family) | |
65efcfce | 531 | { |
d62a17ae | 532 | struct listnode *node; |
533 | struct rfapi_rfg_name *rfgn; | |
534 | ||
535 | /* | |
536 | * Loop over the list of NVE-Groups configured for | |
537 | * exporting to direct-bgp. | |
538 | * | |
539 | * Build a list of NVEs that use this import table | |
540 | */ | |
541 | *nves = NULL; | |
542 | for (ALL_LIST_ELEMENTS_RO(bgp->rfapi_cfg->rfg_export_zebra_l, node, | |
543 | rfgn)) { | |
544 | ||
545 | /* | |
546 | * If this NVE-Group's import table matches the current one | |
547 | */ | |
548 | if (rfgn->rfg && rfgn->rfg->nves | |
549 | && rfgn->rfg->rfapi_import_table == it) { | |
550 | ||
551 | nve_group_to_nve_list(rfgn->rfg, nves, family); | |
552 | } | |
553 | } | |
65efcfce LB |
554 | } |
555 | ||
d62a17ae | 556 | static void vnc_zebra_add_del_prefix(struct bgp *bgp, |
557 | struct rfapi_import_table *import_table, | |
558 | struct route_node *rn, | |
559 | int add) /* !0 = add, 0 = del */ | |
65efcfce | 560 | { |
d62a17ae | 561 | struct list *nves; |
562 | ||
a74e593b | 563 | unsigned int nexthop_count = 0; |
d62a17ae | 564 | void *nh_ary = NULL; |
565 | void *nhp_ary = NULL; | |
566 | ||
567 | vnc_zlog_debug_verbose("%s: entry, add=%d", __func__, add); | |
568 | ||
569 | if (zclient_vnc->sock < 0) | |
570 | return; | |
571 | ||
572 | if (rn->p.family != AF_INET && rn->p.family != AF_INET6) { | |
573 | zlog_err("%s: invalid route node addr family", __func__); | |
574 | return; | |
575 | } | |
576 | ||
577 | if (!zclient_vnc->redist[family2afi(rn->p.family)][ZEBRA_ROUTE_VNC]) | |
578 | return; | |
579 | ||
580 | if (!bgp->rfapi_cfg) { | |
581 | vnc_zlog_debug_verbose("%s: bgp->rfapi_cfg is NULL, skipping", | |
582 | __func__); | |
583 | return; | |
584 | } | |
585 | if (!listcount(bgp->rfapi_cfg->rfg_export_zebra_l)) { | |
586 | vnc_zlog_debug_verbose( | |
587 | "%s: no zebra export nve group, skipping", __func__); | |
588 | return; | |
589 | } | |
590 | ||
591 | import_table_to_nve_list_zebra(bgp, import_table, &nves, rn->p.family); | |
592 | ||
593 | if (nves) { | |
594 | nve_list_to_nh_array(rn->p.family, nves, &nexthop_count, | |
595 | &nh_ary, &nhp_ary); | |
596 | ||
affe9e99 | 597 | list_delete_and_null(&nves); |
d62a17ae | 598 | |
599 | if (nexthop_count) | |
600 | vnc_zebra_route_msg(&rn->p, nexthop_count, nhp_ary, | |
601 | add); | |
602 | } | |
603 | ||
604 | if (nhp_ary) | |
605 | XFREE(MTYPE_TMP, nhp_ary); | |
606 | if (nh_ary) | |
607 | XFREE(MTYPE_TMP, nh_ary); | |
65efcfce LB |
608 | } |
609 | ||
d62a17ae | 610 | void vnc_zebra_add_prefix(struct bgp *bgp, |
611 | struct rfapi_import_table *import_table, | |
612 | struct route_node *rn) | |
65efcfce | 613 | { |
d62a17ae | 614 | vnc_zebra_add_del_prefix(bgp, import_table, rn, 1); |
65efcfce LB |
615 | } |
616 | ||
d62a17ae | 617 | void vnc_zebra_del_prefix(struct bgp *bgp, |
618 | struct rfapi_import_table *import_table, | |
619 | struct route_node *rn) | |
65efcfce | 620 | { |
d62a17ae | 621 | vnc_zebra_add_del_prefix(bgp, import_table, rn, 0); |
65efcfce LB |
622 | } |
623 | ||
624 | ||
d62a17ae | 625 | static void vnc_zebra_add_del_nve(struct bgp *bgp, struct rfapi_descriptor *rfd, |
626 | int add) /* 0 = del, !0 = add */ | |
65efcfce | 627 | { |
d62a17ae | 628 | struct listnode *node; |
629 | struct rfapi_rfg_name *rfgn; | |
630 | struct rfapi_nve_group_cfg *rfg = rfd->rfg; | |
631 | afi_t afi = family2afi(rfd->vn_addr.addr_family); | |
632 | struct prefix nhp; | |
633 | // struct prefix *nhpp; | |
634 | void *pAddr; | |
635 | ||
636 | vnc_zlog_debug_verbose("%s: entry, add=%d", __func__, add); | |
637 | ||
638 | if (zclient_vnc->sock < 0) | |
639 | return; | |
640 | ||
641 | if (!zclient_vnc->redist[afi][ZEBRA_ROUTE_VNC]) | |
642 | return; | |
643 | ||
644 | if (afi != AFI_IP && afi != AFI_IP6) { | |
645 | zlog_err("%s: invalid vn addr family", __func__); | |
646 | return; | |
647 | } | |
648 | ||
649 | if (!bgp) | |
650 | return; | |
651 | if (!bgp->rfapi_cfg) { | |
652 | vnc_zlog_debug_verbose("%s: bgp->rfapi_cfg is NULL, skipping", | |
653 | __func__); | |
654 | return; | |
655 | } | |
656 | ||
657 | if (rfapiRaddr2Qprefix(&rfd->vn_addr, &nhp)) { | |
658 | vnc_zlog_debug_verbose("%s: can't convert vn address, skipping", | |
659 | __func__); | |
660 | return; | |
661 | } | |
662 | ||
663 | pAddr = &nhp.u.prefix4; | |
664 | ||
665 | /* | |
666 | * Loop over the list of NVE-Groups configured for | |
667 | * exporting to zebra and see if this new NVE's | |
668 | * group is among them. | |
669 | */ | |
670 | for (ALL_LIST_ELEMENTS_RO(bgp->rfapi_cfg->rfg_export_zebra_l, node, | |
671 | rfgn)) { | |
672 | ||
673 | /* | |
674 | * Yes, this NVE's group is configured for export to zebra | |
675 | */ | |
676 | if (rfgn->rfg == rfg) { | |
677 | ||
678 | struct route_table *rt = NULL; | |
679 | struct route_node *rn; | |
680 | struct rfapi_import_table *import_table; | |
681 | import_table = rfg->rfapi_import_table; | |
682 | ||
683 | vnc_zlog_debug_verbose( | |
684 | "%s: this nve's group is in zebra export list", | |
685 | __func__); | |
686 | ||
687 | rt = import_table->imported_vpn[afi]; | |
688 | ||
689 | /* | |
690 | * Walk the NVE-Group's VNC Import table | |
691 | */ | |
692 | for (rn = route_top(rt); rn; rn = route_next(rn)) { | |
693 | ||
694 | if (rn->info) { | |
695 | ||
696 | vnc_zlog_debug_verbose( | |
697 | "%s: sending %s", __func__, | |
698 | (add ? "add" : "del")); | |
699 | vnc_zebra_route_msg(&rn->p, 1, &pAddr, | |
700 | add); | |
701 | } | |
702 | } | |
703 | } | |
704 | } | |
65efcfce LB |
705 | } |
706 | ||
d62a17ae | 707 | void vnc_zebra_add_nve(struct bgp *bgp, struct rfapi_descriptor *rfd) |
65efcfce | 708 | { |
d62a17ae | 709 | vnc_zebra_add_del_nve(bgp, rfd, 1); |
65efcfce LB |
710 | } |
711 | ||
d62a17ae | 712 | void vnc_zebra_del_nve(struct bgp *bgp, struct rfapi_descriptor *rfd) |
65efcfce | 713 | { |
d62a17ae | 714 | vnc_zebra_add_del_nve(bgp, rfd, 0); |
65efcfce LB |
715 | } |
716 | ||
d62a17ae | 717 | static void vnc_zebra_add_del_group_afi(struct bgp *bgp, |
718 | struct rfapi_nve_group_cfg *rfg, | |
719 | afi_t afi, int add) | |
65efcfce | 720 | { |
d62a17ae | 721 | struct route_table *rt = NULL; |
722 | struct route_node *rn; | |
723 | struct rfapi_import_table *import_table; | |
724 | uint8_t family = afi2family(afi); | |
725 | ||
726 | struct list *nves = NULL; | |
a74e593b | 727 | unsigned int nexthop_count = 0; |
d62a17ae | 728 | void *nh_ary = NULL; |
729 | void *nhp_ary = NULL; | |
730 | ||
731 | vnc_zlog_debug_verbose("%s: entry", __func__); | |
732 | import_table = rfg->rfapi_import_table; | |
733 | if (!import_table) { | |
734 | vnc_zlog_debug_verbose( | |
735 | "%s: import table not defined, returning", __func__); | |
736 | return; | |
737 | } | |
738 | ||
739 | if (afi == AFI_IP || afi == AFI_IP6) { | |
740 | rt = import_table->imported_vpn[afi]; | |
741 | } else { | |
742 | zlog_err("%s: bad afi %d", __func__, afi); | |
743 | return; | |
744 | } | |
745 | ||
746 | if (!family) { | |
747 | zlog_err("%s: computed bad family: %d", __func__, family); | |
748 | return; | |
749 | } | |
750 | ||
751 | if (!rfg->nves) { | |
752 | /* avoid segfault below if list doesn't exist */ | |
753 | vnc_zlog_debug_verbose("%s: no NVEs in this group", __func__); | |
754 | return; | |
755 | } | |
756 | ||
757 | nve_group_to_nve_list(rfg, &nves, family); | |
758 | if (nves) { | |
759 | vnc_zlog_debug_verbose("%s: have nves", __func__); | |
760 | nve_list_to_nh_array(family, nves, &nexthop_count, &nh_ary, | |
761 | &nhp_ary); | |
762 | ||
763 | vnc_zlog_debug_verbose("%s: family: %d, nve count: %d", | |
764 | __func__, family, nexthop_count); | |
765 | ||
affe9e99 | 766 | list_delete_and_null(&nves); |
d62a17ae | 767 | |
768 | if (nexthop_count) { | |
769 | /* | |
770 | * Walk the NVE-Group's VNC Import table | |
771 | */ | |
772 | for (rn = route_top(rt); rn; rn = route_next(rn)) { | |
773 | if (rn->info) { | |
774 | vnc_zebra_route_msg(&rn->p, | |
775 | nexthop_count, | |
776 | nhp_ary, add); | |
777 | } | |
778 | } | |
779 | } | |
780 | if (nhp_ary) | |
781 | XFREE(MTYPE_TMP, nhp_ary); | |
782 | if (nh_ary) | |
783 | XFREE(MTYPE_TMP, nh_ary); | |
784 | } | |
65efcfce LB |
785 | } |
786 | ||
d62a17ae | 787 | void vnc_zebra_add_group(struct bgp *bgp, struct rfapi_nve_group_cfg *rfg) |
65efcfce | 788 | { |
d62a17ae | 789 | vnc_zebra_add_del_group_afi(bgp, rfg, AFI_IP, 1); |
790 | vnc_zebra_add_del_group_afi(bgp, rfg, AFI_IP6, 1); | |
65efcfce LB |
791 | } |
792 | ||
d62a17ae | 793 | void vnc_zebra_del_group(struct bgp *bgp, struct rfapi_nve_group_cfg *rfg) |
65efcfce | 794 | { |
d62a17ae | 795 | vnc_zlog_debug_verbose("%s: entry", __func__); |
796 | vnc_zebra_add_del_group_afi(bgp, rfg, AFI_IP, 0); | |
797 | vnc_zebra_add_del_group_afi(bgp, rfg, AFI_IP6, 0); | |
65efcfce LB |
798 | } |
799 | ||
d62a17ae | 800 | void vnc_zebra_reexport_group_afi(struct bgp *bgp, |
801 | struct rfapi_nve_group_cfg *rfg, afi_t afi) | |
65efcfce | 802 | { |
d62a17ae | 803 | struct listnode *node; |
804 | struct rfapi_rfg_name *rfgn; | |
805 | ||
806 | for (ALL_LIST_ELEMENTS_RO(bgp->rfapi_cfg->rfg_export_zebra_l, node, | |
807 | rfgn)) { | |
808 | ||
809 | if (rfgn->rfg == rfg) { | |
810 | vnc_zebra_add_del_group_afi(bgp, rfg, afi, 0); | |
811 | vnc_zebra_add_del_group_afi(bgp, rfg, afi, 1); | |
812 | break; | |
813 | } | |
814 | } | |
65efcfce LB |
815 | } |
816 | ||
817 | ||
818 | /*********************************************************************** | |
819 | * CONTROL INTERFACE | |
820 | ***********************************************************************/ | |
821 | ||
822 | ||
823 | /* Other routes redistribution into BGP. */ | |
d62a17ae | 824 | int vnc_redistribute_set(struct bgp *bgp, afi_t afi, int type) |
65efcfce | 825 | { |
d62a17ae | 826 | if (!bgp->rfapi_cfg) { |
827 | return CMD_WARNING_CONFIG_FAILED; | |
828 | } | |
65efcfce | 829 | |
d62a17ae | 830 | /* Set flag to BGP instance. */ |
831 | bgp->rfapi_cfg->redist[afi][type] = 1; | |
65efcfce | 832 | |
d62a17ae | 833 | // bgp->redist[afi][type] = 1; |
65efcfce | 834 | |
d62a17ae | 835 | /* Return if already redistribute flag is set. */ |
836 | if (zclient_vnc->redist[afi][type]) | |
837 | return CMD_WARNING_CONFIG_FAILED; | |
65efcfce | 838 | |
d62a17ae | 839 | vrf_bitmap_set(zclient_vnc->redist[afi][type], VRF_DEFAULT); |
65efcfce | 840 | |
d62a17ae | 841 | // zclient_vnc->redist[afi][type] = 1; |
65efcfce | 842 | |
d62a17ae | 843 | /* Return if zebra connection is not established. */ |
844 | if (zclient_vnc->sock < 0) | |
845 | return CMD_WARNING_CONFIG_FAILED; | |
65efcfce | 846 | |
d62a17ae | 847 | if (BGP_DEBUG(zebra, ZEBRA)) |
848 | vnc_zlog_debug_verbose("Zebra send: redistribute add %s", | |
849 | zebra_route_string(type)); | |
65efcfce | 850 | |
d62a17ae | 851 | /* Send distribute add message to zebra. */ |
852 | zebra_redistribute_send(ZEBRA_REDISTRIBUTE_ADD, zclient_vnc, afi, type, | |
853 | 0, VRF_DEFAULT); | |
65efcfce | 854 | |
d62a17ae | 855 | return CMD_SUCCESS; |
65efcfce LB |
856 | } |
857 | ||
858 | /* Unset redistribution. */ | |
d62a17ae | 859 | int vnc_redistribute_unset(struct bgp *bgp, afi_t afi, int type) |
65efcfce | 860 | { |
d62a17ae | 861 | vnc_zlog_debug_verbose("%s: type=%d entry", __func__, type); |
862 | ||
863 | if (!bgp->rfapi_cfg) { | |
864 | vnc_zlog_debug_verbose("%s: return (no rfapi_cfg)", __func__); | |
865 | return CMD_WARNING_CONFIG_FAILED; | |
866 | } | |
867 | ||
868 | /* Unset flag from BGP instance. */ | |
869 | bgp->rfapi_cfg->redist[afi][type] = 0; | |
870 | ||
871 | /* Return if zebra connection is disabled. */ | |
872 | if (!zclient_vnc->redist[afi][type]) | |
873 | return CMD_WARNING_CONFIG_FAILED; | |
874 | zclient_vnc->redist[afi][type] = 0; | |
875 | ||
876 | if (bgp->rfapi_cfg->redist[AFI_IP][type] == 0 | |
877 | && bgp->rfapi_cfg->redist[AFI_IP6][type] == 0 | |
878 | && zclient_vnc->sock >= 0) { | |
879 | /* Send distribute delete message to zebra. */ | |
880 | if (BGP_DEBUG(zebra, ZEBRA)) | |
881 | vnc_zlog_debug_verbose( | |
882 | "Zebra send: redistribute delete %s", | |
883 | zebra_route_string(type)); | |
884 | zebra_redistribute_send(ZEBRA_REDISTRIBUTE_DELETE, zclient_vnc, | |
885 | afi, type, 0, VRF_DEFAULT); | |
886 | } | |
887 | ||
888 | /* Withdraw redistributed routes from current BGP's routing table. */ | |
889 | vnc_redistribute_withdraw(bgp, afi, type); | |
890 | ||
891 | vnc_zlog_debug_verbose("%s: return", __func__); | |
892 | ||
893 | return CMD_SUCCESS; | |
65efcfce LB |
894 | } |
895 | ||
342213ea | 896 | extern struct zebra_privs_t bgpd_privs; |
65efcfce LB |
897 | |
898 | /* | |
899 | * Modeled after bgp_zebra.c'bgp_zebra_init() | |
900 | * Charriere asks, "Is it possible to carry two?" | |
901 | */ | |
d62a17ae | 902 | void vnc_zebra_init(struct thread_master *master) |
65efcfce | 903 | { |
d62a17ae | 904 | /* Set default values. */ |
e1a1880d | 905 | zclient_vnc = zclient_new_notify(master, &zclient_options_default); |
342213ea | 906 | zclient_init(zclient_vnc, ZEBRA_ROUTE_VNC, 0, &bgpd_privs); |
d62a17ae | 907 | |
74489921 RW |
908 | zclient_vnc->redistribute_route_add = vnc_zebra_read_route; |
909 | zclient_vnc->redistribute_route_del = vnc_zebra_read_route; | |
65efcfce LB |
910 | } |
911 | ||
d62a17ae | 912 | void vnc_zebra_destroy(void) |
65efcfce | 913 | { |
d62a17ae | 914 | if (zclient_vnc == NULL) |
915 | return; | |
916 | zclient_stop(zclient_vnc); | |
917 | zclient_free(zclient_vnc); | |
918 | zclient_vnc = NULL; | |
65efcfce | 919 | } |