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acddc0ed | 1 | // SPDX-License-Identifier: GPL-2.0-or-later |
d62a17ae | 2 | /* |
65efcfce LB |
3 | * |
4 | * Copyright 2009-2016, LabN Consulting, L.L.C. | |
5 | * | |
65efcfce LB |
6 | */ |
7 | ||
8 | /* | |
9 | * File: vnc_export_bgp.c | |
10 | * Purpose: Export routes to BGP directly (not via zebra) | |
11 | */ | |
12 | ||
f8b6f499 LB |
13 | #include "lib/zebra.h" |
14 | #include "lib/prefix.h" | |
fe08ba7e | 15 | #include "lib/agg_table.h" |
f8b6f499 LB |
16 | #include "lib/vty.h" |
17 | #include "lib/log.h" | |
18 | #include "lib/stream.h" | |
19 | #include "lib/memory.h" | |
20 | #include "lib/linklist.h" | |
21 | #include "lib/plist.h" | |
22 | #include "lib/routemap.h" | |
02705213 | 23 | #include "lib/lib_errors.h" |
65efcfce | 24 | |
f8b6f499 LB |
25 | #include "bgpd/bgpd.h" |
26 | #include "bgpd/bgp_ecommunity.h" | |
27 | #include "bgpd/bgp_attr.h" | |
28 | #include "bgpd/bgp_aspath.h" | |
65efcfce | 29 | |
f8b6f499 LB |
30 | #include "bgpd/rfapi/vnc_export_bgp.h" |
31 | #include "bgpd/rfapi/vnc_export_bgp_p.h" | |
32 | #include "bgpd/rfapi/vnc_export_table.h" | |
33 | #include "bgpd/rfapi/bgp_rfapi_cfg.h" | |
34 | #include "bgpd/rfapi/rfapi.h" | |
35 | #include "bgpd/rfapi/rfapi_import.h" | |
36 | #include "bgpd/rfapi/rfapi_private.h" | |
37 | #include "bgpd/rfapi/rfapi_backend.h" | |
38 | #include "bgpd/rfapi/rfapi_vty.h" | |
39 | #include "bgpd/rfapi/vnc_debug.h" | |
65efcfce | 40 | |
d477c01d LB |
41 | |
42 | static void vnc_direct_add_rn_group_rd(struct bgp *bgp, | |
43 | struct rfapi_nve_group_cfg *rfg, | |
fe08ba7e | 44 | struct agg_node *rn, struct attr *attr, |
d477c01d LB |
45 | afi_t afi, |
46 | struct rfapi_descriptor *irfd); | |
47 | ||
65efcfce LB |
48 | /*********************************************************************** |
49 | * Export methods that set nexthop to CE (from 5226 roo EC) BEGIN | |
50 | ***********************************************************************/ | |
51 | ||
52 | /* | |
53 | * Memory allocation approach: make a ghost attr that | |
54 | * has non-interned parts for the modifications. ghost attr | |
55 | * memory is allocated by caller. | |
56 | * | |
57 | * - extract ce (=5226) EC and use as new nexthop | |
58 | * - strip Tunnel Encap attr | |
59 | * - copy all ECs | |
60 | */ | |
d62a17ae | 61 | static void encap_attr_export_ce(struct attr *new, struct attr *orig, |
62 | struct prefix *use_nexthop) | |
65efcfce | 63 | { |
d62a17ae | 64 | /* |
65 | * Make "new" a ghost attr copy of "orig" | |
66 | */ | |
67 | memset(new, 0, sizeof(struct attr)); | |
6f4f49b2 | 68 | *new = *orig; |
d62a17ae | 69 | |
70 | /* | |
71 | * Set nexthop | |
72 | */ | |
73 | switch (use_nexthop->family) { | |
74 | case AF_INET: | |
75 | new->nexthop = use_nexthop->u.prefix4; | |
0606039c | 76 | new->mp_nexthop_len = BGP_ATTR_NHLEN_IPV4; /* bytes */ |
d62a17ae | 77 | new->flag |= ATTR_FLAG_BIT(BGP_ATTR_NEXT_HOP); |
78 | break; | |
79 | ||
80 | case AF_INET6: | |
81 | new->mp_nexthop_global = use_nexthop->u.prefix6; | |
0606039c | 82 | new->mp_nexthop_len = BGP_ATTR_NHLEN_IPV6_GLOBAL; /* bytes */ |
d62a17ae | 83 | break; |
84 | ||
85 | default: | |
86 | assert(0); | |
87 | break; | |
88 | } | |
89 | ||
90 | /* | |
91 | * Set MED | |
92 | * | |
93 | * Note that it will be deleted when BGP sends to any eBGP | |
94 | * peer unless PEER_FLAG_MED_UNCHANGED is set: | |
95 | * | |
96 | * neighbor NEIGHBOR attribute-unchanged med | |
97 | */ | |
98 | if (!CHECK_FLAG(new->flag, BGP_ATTR_MULTI_EXIT_DISC)) { | |
99 | if (CHECK_FLAG(new->flag, BGP_ATTR_LOCAL_PREF)) { | |
100 | if (new->local_pref > 255) | |
101 | new->med = 0; | |
102 | else | |
103 | new->med = 255 - new->local_pref; | |
104 | } else { | |
105 | new->med = 255; /* shouldn't happen */ | |
106 | } | |
107 | new->flag |= ATTR_FLAG_BIT(BGP_ATTR_MULTI_EXIT_DISC); | |
108 | } | |
109 | ||
110 | /* | |
111 | * "new" is now a ghost attr: | |
112 | * - it owns an "extra" struct | |
113 | * - it owns any non-interned parts | |
114 | * - any references to interned parts are not counted | |
115 | * | |
116 | * Caller should, after using the attr, call: | |
117 | * - bgp_attr_flush() to free non-interned parts | |
118 | */ | |
65efcfce LB |
119 | } |
120 | ||
d62a17ae | 121 | static int getce(struct bgp *bgp, struct attr *attr, struct prefix *pfx_ce) |
65efcfce | 122 | { |
d62a17ae | 123 | uint8_t *ecp; |
f6e07e1b | 124 | uint32_t i; |
d62a17ae | 125 | uint16_t localadmin = bgp->rfapi_cfg->resolve_nve_roo_local_admin; |
b53e67a3 | 126 | struct ecommunity *ecomm = bgp_attr_get_ecommunity(attr); |
d62a17ae | 127 | |
b53e67a3 | 128 | for (ecp = ecomm->val, i = 0; i < ecomm->size; |
d62a17ae | 129 | ++i, ecp += ECOMMUNITY_SIZE) { |
130 | ||
131 | if (VNC_DEBUG(EXPORT_BGP_GETCE)) { | |
132 | vnc_zlog_debug_any( | |
133 | "%s: %02x %02x %02x %02x %02x %02x %02x %02x", | |
134 | __func__, ecp[0], ecp[1], ecp[2], ecp[3], | |
135 | ecp[4], ecp[5], ecp[6], ecp[7]); | |
136 | } | |
137 | ||
138 | /* | |
139 | * is it ROO? | |
140 | */ | |
141 | if (ecp[0] != 1 || ecp[1] != 3) { | |
142 | continue; | |
143 | } | |
144 | ||
145 | /* | |
146 | * Match local admin value? | |
147 | */ | |
148 | if (ecp[6] != ((localadmin & 0xff00) >> 8) | |
149 | || ecp[7] != (localadmin & 0xff)) | |
150 | continue; | |
151 | ||
152 | memset((uint8_t *)pfx_ce, 0, sizeof(*pfx_ce)); | |
153 | memcpy(&pfx_ce->u.prefix4, ecp + 2, 4); | |
154 | pfx_ce->family = AF_INET; | |
30360041 | 155 | pfx_ce->prefixlen = IPV4_MAX_BITLEN; |
d62a17ae | 156 | |
157 | return 0; | |
158 | } | |
159 | return -1; | |
65efcfce LB |
160 | } |
161 | ||
162 | ||
fe08ba7e | 163 | void vnc_direct_bgp_add_route_ce(struct bgp *bgp, struct agg_node *rn, |
40381db7 | 164 | struct bgp_path_info *bpi) |
65efcfce | 165 | { |
40381db7 DS |
166 | struct attr *attr = bpi->attr; |
167 | struct peer *peer = bpi->peer; | |
26a3ffd6 | 168 | const struct prefix *prefix = agg_node_get_prefix(rn); |
d62a17ae | 169 | afi_t afi = family2afi(prefix->family); |
9bcb3eef | 170 | struct bgp_dest *udest; |
40381db7 | 171 | struct bgp_path_info *ubpi; |
d62a17ae | 172 | struct attr hattr; |
173 | struct attr *iattr; | |
174 | struct prefix ce_nexthop; | |
175 | struct prefix post_routemap_nexthop; | |
176 | ||
177 | ||
178 | if (!afi) { | |
1c50c1c0 QY |
179 | flog_err(EC_LIB_DEVELOPMENT, "%s: can't get afi of route node", |
180 | __func__); | |
d62a17ae | 181 | return; |
182 | } | |
183 | ||
40381db7 DS |
184 | if ((bpi->type != ZEBRA_ROUTE_BGP) |
185 | || (bpi->sub_type != BGP_ROUTE_NORMAL | |
186 | && bpi->sub_type != BGP_ROUTE_RFP | |
187 | && bpi->sub_type != BGP_ROUTE_STATIC)) { | |
d62a17ae | 188 | |
189 | vnc_zlog_debug_verbose( | |
190 | "%s: wrong route type/sub_type for export, skipping", | |
191 | __func__); | |
192 | return; | |
193 | } | |
194 | ||
195 | /* check bgp redist flag for vnc direct ("vpn") routes */ | |
196 | if (!bgp->redist[afi][ZEBRA_ROUTE_VNC_DIRECT]) { | |
197 | vnc_zlog_debug_verbose( | |
198 | "%s: bgp redistribution of VNC direct routes is off", | |
199 | __func__); | |
200 | return; | |
201 | } | |
202 | ||
203 | if (!bgp->rfapi_cfg) { | |
204 | vnc_zlog_debug_verbose("%s: bgp->rfapi_cfg is NULL, skipping", | |
205 | __func__); | |
206 | return; | |
207 | } | |
208 | ||
209 | if (!VNC_EXPORT_BGP_CE_ENABLED(bgp->rfapi_cfg)) { | |
210 | vnc_zlog_debug_verbose( | |
211 | "%s: export-to-bgp ce mode not enabled, skipping", | |
212 | __func__); | |
213 | return; | |
214 | } | |
215 | ||
216 | /* | |
217 | * prefix list check | |
218 | */ | |
219 | if (bgp->rfapi_cfg->plist_export_bgp[afi]) { | |
220 | if (prefix_list_apply(bgp->rfapi_cfg->plist_export_bgp[afi], | |
221 | prefix) | |
222 | == PREFIX_DENY) { | |
223 | vnc_zlog_debug_verbose( | |
224 | "%s: prefix list denied, skipping", __func__); | |
225 | return; | |
226 | } | |
227 | } | |
228 | ||
229 | ||
230 | /* | |
231 | * Extract CE | |
232 | * This works only for IPv4 because IPv6 addresses are too big | |
233 | * to fit in an extended community | |
234 | */ | |
235 | if (getce(bgp, attr, &ce_nexthop)) { | |
236 | vnc_zlog_debug_verbose("%s: EC has no encoded CE, skipping", | |
237 | __func__); | |
238 | return; | |
239 | } | |
240 | ||
241 | /* | |
242 | * Is this route already represented in the unicast RIB? | |
243 | * (look up prefix; compare route type, sub_type, peer, nexthop) | |
244 | */ | |
9bcb3eef DS |
245 | udest = bgp_afi_node_get(bgp->rib[afi][SAFI_UNICAST], afi, SAFI_UNICAST, |
246 | prefix, NULL); | |
247 | for (ubpi = bgp_dest_get_bgp_path_info(udest); ubpi; | |
248 | ubpi = ubpi->next) { | |
d62a17ae | 249 | struct prefix unicast_nexthop; |
250 | ||
40381db7 | 251 | if (CHECK_FLAG(ubpi->flags, BGP_PATH_REMOVED)) |
d62a17ae | 252 | continue; |
253 | ||
40381db7 | 254 | rfapiUnicastNexthop2Prefix(afi, ubpi->attr, &unicast_nexthop); |
d62a17ae | 255 | |
40381db7 DS |
256 | if (ubpi->type == ZEBRA_ROUTE_VNC_DIRECT |
257 | && ubpi->sub_type == BGP_ROUTE_REDISTRIBUTE | |
258 | && ubpi->peer == peer | |
d62a17ae | 259 | && prefix_same(&unicast_nexthop, &ce_nexthop)) { |
260 | ||
261 | vnc_zlog_debug_verbose( | |
262 | "%s: already have matching exported unicast route, skipping", | |
263 | __func__); | |
264 | return; | |
265 | } | |
266 | } | |
267 | ||
268 | /* | |
269 | * Construct new attribute set with CE addr as | |
270 | * nexthop and without Tunnel Encap attr | |
271 | */ | |
272 | encap_attr_export_ce(&hattr, attr, &ce_nexthop); | |
273 | if (bgp->rfapi_cfg->routemap_export_bgp) { | |
4b7e6066 | 274 | struct bgp_path_info info; |
d62a17ae | 275 | route_map_result_t ret; |
276 | ||
277 | memset(&info, 0, sizeof(info)); | |
278 | info.peer = peer; | |
279 | info.attr = &hattr; | |
280 | ret = route_map_apply(bgp->rfapi_cfg->routemap_export_bgp, | |
1782514f | 281 | prefix, &info); |
d62a17ae | 282 | if (ret == RMAP_DENYMATCH) { |
283 | bgp_attr_flush(&hattr); | |
284 | return; | |
285 | } | |
286 | } | |
287 | ||
288 | iattr = bgp_attr_intern(&hattr); | |
289 | bgp_attr_flush(&hattr); | |
290 | ||
291 | /* | |
292 | * Rule: disallow route-map alteration of next-hop, because it | |
293 | * would make it too difficult to keep track of the correspondence | |
294 | * between VPN routes and unicast routes. | |
295 | */ | |
296 | rfapiUnicastNexthop2Prefix(afi, iattr, &post_routemap_nexthop); | |
297 | ||
298 | if (!prefix_same(&ce_nexthop, &post_routemap_nexthop)) { | |
299 | vnc_zlog_debug_verbose( | |
300 | "%s: route-map modification of nexthop not allowed, skipping", | |
301 | __func__); | |
302 | bgp_attr_unintern(&iattr); | |
303 | return; | |
304 | } | |
305 | ||
306 | bgp_update(peer, prefix, 0, /* addpath_id */ | |
307 | iattr, /* bgp_update copies this attr */ | |
308 | afi, SAFI_UNICAST, ZEBRA_ROUTE_VNC_DIRECT, | |
309 | BGP_ROUTE_REDISTRIBUTE, NULL, /* RD not used for unicast */ | |
b57ba6d2 | 310 | NULL, 0, /* tag not used for unicast */ |
d62a17ae | 311 | 0, NULL); /* EVPN not used */ |
312 | bgp_attr_unintern(&iattr); | |
65efcfce LB |
313 | } |
314 | ||
315 | ||
316 | /* | |
317 | * "Withdrawing a Route" export process | |
318 | */ | |
fe08ba7e | 319 | void vnc_direct_bgp_del_route_ce(struct bgp *bgp, struct agg_node *rn, |
40381db7 | 320 | struct bgp_path_info *bpi) |
65efcfce | 321 | { |
26a3ffd6 DS |
322 | const struct prefix *p = agg_node_get_prefix(rn); |
323 | afi_t afi = family2afi(p->family); | |
40381db7 | 324 | struct bgp_path_info *vbpi; |
d62a17ae | 325 | struct prefix ce_nexthop; |
326 | ||
327 | if (!afi) { | |
450971aa | 328 | flog_err(EC_LIB_DEVELOPMENT, "%s: bad afi", __func__); |
d62a17ae | 329 | return; |
330 | } | |
331 | ||
332 | /* check bgp redist flag for vnc direct ("vpn") routes */ | |
333 | if (!bgp->redist[afi][ZEBRA_ROUTE_VNC_DIRECT]) { | |
334 | vnc_zlog_debug_verbose( | |
335 | "%s: bgp redistribution of VNC direct routes is off", | |
336 | __func__); | |
337 | return; | |
338 | } | |
339 | ||
340 | if (!bgp->rfapi_cfg) { | |
341 | vnc_zlog_debug_verbose("%s: bgp->rfapi_cfg is NULL, skipping", | |
342 | __func__); | |
343 | return; | |
344 | } | |
345 | if (!VNC_EXPORT_BGP_CE_ENABLED(bgp->rfapi_cfg)) { | |
346 | vnc_zlog_debug_verbose( | |
347 | "%s: export-to-bgp ce mode not enabled, skipping", | |
348 | __func__); | |
349 | return; | |
350 | } | |
351 | ||
352 | /* | |
353 | * Extract CE | |
354 | * This works only for IPv4 because IPv6 addresses are too big | |
355 | * to fit in an extended community | |
356 | */ | |
40381db7 | 357 | if (getce(bgp, bpi->attr, &ce_nexthop)) { |
d62a17ae | 358 | vnc_zlog_debug_verbose("%s: EC has no encoded CE, skipping", |
359 | __func__); | |
360 | return; | |
361 | } | |
362 | ||
363 | /* | |
364 | * Look for other VPN routes with same prefix, same 5226 CE, | |
365 | * same peer. If at least one is present, don't remove the | |
366 | * route from the unicast RIB | |
367 | */ | |
368 | ||
40381db7 | 369 | for (vbpi = rn->info; vbpi; vbpi = vbpi->next) { |
d62a17ae | 370 | struct prefix ce; |
40381db7 | 371 | if (bpi == vbpi) |
d62a17ae | 372 | continue; |
40381db7 | 373 | if (bpi->peer != vbpi->peer) |
d62a17ae | 374 | continue; |
40381db7 | 375 | if (getce(bgp, vbpi->attr, &ce)) |
d62a17ae | 376 | continue; |
377 | if (prefix_same(&ce, &ce_nexthop)) { | |
378 | vnc_zlog_debug_verbose( | |
379 | "%s: still have a route via CE, not deleting unicast", | |
380 | __func__); | |
381 | return; | |
382 | } | |
383 | } | |
65efcfce | 384 | |
d62a17ae | 385 | /* |
386 | * withdraw the route | |
387 | */ | |
26a3ffd6 | 388 | bgp_withdraw(bpi->peer, p, 0, /* addpath_id */ |
d62a17ae | 389 | afi, SAFI_UNICAST, ZEBRA_ROUTE_VNC_DIRECT, |
390 | BGP_ROUTE_REDISTRIBUTE, NULL, /* RD not used for unicast */ | |
317f1fe0 | 391 | NULL, 0, NULL); /* tag not used for unicast */ |
65efcfce LB |
392 | } |
393 | ||
d62a17ae | 394 | static void vnc_direct_bgp_vpn_enable_ce(struct bgp *bgp, afi_t afi) |
65efcfce | 395 | { |
fe08ba7e | 396 | struct agg_node *rn; |
4b7e6066 | 397 | struct bgp_path_info *ri; |
65efcfce | 398 | |
d62a17ae | 399 | vnc_zlog_debug_verbose("%s: entry, afi=%d", __func__, afi); |
65efcfce | 400 | |
d62a17ae | 401 | if (!bgp) |
402 | return; | |
65efcfce | 403 | |
3f54c705 | 404 | if (!(bgp->rfapi_cfg)) |
d62a17ae | 405 | return; |
65efcfce | 406 | |
d62a17ae | 407 | if (!VNC_EXPORT_BGP_CE_ENABLED(bgp->rfapi_cfg)) { |
408 | vnc_zlog_debug_verbose( | |
409 | "%s: export of CE routes not enabled, skipping", | |
410 | __func__); | |
411 | return; | |
412 | } | |
65efcfce | 413 | |
d62a17ae | 414 | if (afi != AFI_IP && afi != AFI_IP6) { |
415 | vnc_zlog_debug_verbose("%s: bad afi: %d", __func__, afi); | |
416 | return; | |
417 | } | |
65efcfce | 418 | |
d62a17ae | 419 | /* |
420 | * Go through entire ce import table and export to BGP unicast. | |
421 | */ | |
fe08ba7e DS |
422 | for (rn = agg_route_top(bgp->rfapi->it_ce->imported_vpn[afi]); rn; |
423 | rn = agg_route_next(rn)) { | |
d62a17ae | 424 | if (!rn->info) |
425 | continue; | |
65efcfce | 426 | |
26a3ffd6 DS |
427 | vnc_zlog_debug_verbose("%s: checking prefix %pRN", __func__, |
428 | rn); | |
65efcfce | 429 | |
d62a17ae | 430 | for (ri = rn->info; ri; ri = ri->next) { |
65efcfce | 431 | |
d62a17ae | 432 | vnc_zlog_debug_verbose("%s: ri->sub_type: %d", __func__, |
433 | ri->sub_type); | |
65efcfce | 434 | |
d62a17ae | 435 | if (ri->sub_type == BGP_ROUTE_NORMAL |
436 | || ri->sub_type == BGP_ROUTE_RFP | |
437 | || ri->sub_type == BGP_ROUTE_STATIC) { | |
65efcfce | 438 | |
d62a17ae | 439 | vnc_direct_bgp_add_route_ce(bgp, rn, ri); |
440 | } | |
441 | } | |
442 | } | |
65efcfce LB |
443 | } |
444 | ||
d62a17ae | 445 | static void vnc_direct_bgp_vpn_disable_ce(struct bgp *bgp, afi_t afi) |
65efcfce | 446 | { |
9bcb3eef | 447 | struct bgp_dest *dest; |
d62a17ae | 448 | |
449 | vnc_zlog_debug_verbose("%s: entry, afi=%d", __func__, afi); | |
450 | ||
451 | if (!bgp) | |
452 | return; | |
453 | ||
454 | if (afi != AFI_IP && afi != AFI_IP6) { | |
455 | vnc_zlog_debug_verbose("%s: bad afi: %d", __func__, afi); | |
456 | return; | |
457 | } | |
458 | ||
459 | /* | |
460 | * Go through the entire BGP unicast table and remove routes that | |
461 | * originated from us | |
462 | */ | |
9bcb3eef DS |
463 | for (dest = bgp_table_top(bgp->rib[afi][SAFI_UNICAST]); dest; |
464 | dest = bgp_route_next(dest)) { | |
d62a17ae | 465 | |
4b7e6066 DS |
466 | struct bgp_path_info *ri; |
467 | struct bgp_path_info *next; | |
d62a17ae | 468 | |
9bcb3eef DS |
469 | for (ri = bgp_dest_get_bgp_path_info(dest), next = NULL; ri; |
470 | ri = next) { | |
d62a17ae | 471 | |
472 | next = ri->next; | |
473 | ||
474 | if (ri->type == ZEBRA_ROUTE_VNC_DIRECT | |
475 | && ri->sub_type == BGP_ROUTE_REDISTRIBUTE) { | |
476 | ||
477 | bgp_withdraw( | |
9bcb3eef | 478 | ri->peer, bgp_dest_get_prefix(dest), |
b54892e0 | 479 | 0, /* addpath_id */ |
d62a17ae | 480 | AFI_IP, SAFI_UNICAST, |
481 | ZEBRA_ROUTE_VNC_DIRECT, | |
482 | BGP_ROUTE_REDISTRIBUTE, | |
483 | NULL, /* RD not used for unicast */ | |
317f1fe0 | 484 | NULL, 0, |
d62a17ae | 485 | NULL); /* tag not used for unicast */ |
486 | } | |
487 | } | |
488 | } | |
65efcfce LB |
489 | } |
490 | ||
491 | /*********************************************************************** | |
492 | * Export methods that set nexthop to CE (from 5226 roo EC) END | |
493 | ***********************************************************************/ | |
494 | ||
495 | /*********************************************************************** | |
496 | * Export methods that proxy nexthop BEGIN | |
497 | ***********************************************************************/ | |
498 | ||
fe08ba7e | 499 | static struct ecommunity *vnc_route_origin_ecom(struct agg_node *rn) |
65efcfce | 500 | { |
d62a17ae | 501 | struct ecommunity *new; |
40381db7 | 502 | struct bgp_path_info *bpi; |
d62a17ae | 503 | |
504 | if (!rn->info) | |
505 | return NULL; | |
506 | ||
507 | new = ecommunity_new(); | |
508 | ||
40381db7 | 509 | for (bpi = rn->info; bpi; bpi = bpi->next) { |
d62a17ae | 510 | |
511 | struct ecommunity_val roec; | |
512 | ||
40381db7 | 513 | switch (BGP_MP_NEXTHOP_FAMILY(bpi->attr->mp_nexthop_len)) { |
d62a17ae | 514 | case AF_INET: |
515 | memset(&roec, 0, sizeof(roec)); | |
516 | roec.val[0] = 0x01; | |
517 | roec.val[1] = 0x03; | |
518 | memcpy(roec.val + 2, | |
40381db7 | 519 | &bpi->attr->mp_nexthop_global_in.s_addr, 4); |
d62a17ae | 520 | roec.val[6] = 0; |
521 | roec.val[7] = 0; | |
1207a5bc | 522 | ecommunity_add_val(new, &roec, false, false); |
d62a17ae | 523 | break; |
524 | case AF_INET6: | |
525 | /* No support for IPv6 addresses in extended communities | |
526 | */ | |
527 | break; | |
528 | } | |
529 | } | |
530 | ||
531 | if (!new->size) { | |
532 | ecommunity_free(&new); | |
533 | new = NULL; | |
534 | } | |
535 | ||
536 | return new; | |
65efcfce LB |
537 | } |
538 | ||
d62a17ae | 539 | static struct ecommunity *vnc_route_origin_ecom_single(struct in_addr *origin) |
65efcfce | 540 | { |
d62a17ae | 541 | struct ecommunity *new; |
542 | struct ecommunity_val roec; | |
543 | ||
544 | memset(&roec, 0, sizeof(roec)); | |
545 | roec.val[0] = 0x01; | |
546 | roec.val[1] = 0x03; | |
547 | memcpy(roec.val + 2, &origin->s_addr, 4); | |
548 | roec.val[6] = 0; | |
549 | roec.val[7] = 0; | |
550 | ||
551 | new = ecommunity_new(); | |
1207a5bc | 552 | ecommunity_add_val(new, &roec, false, false); |
d62a17ae | 553 | |
554 | if (!new->size) { | |
555 | ecommunity_free(&new); | |
556 | new = NULL; | |
557 | } | |
558 | ||
559 | return new; | |
65efcfce LB |
560 | } |
561 | ||
562 | ||
563 | /* | |
564 | * New memory allocation approach: make a ghost attr that | |
565 | * has non-interned parts for the modifications. ghost attr | |
566 | * memory is allocated by caller. | |
567 | */ | |
568 | static int | |
d62a17ae | 569 | encap_attr_export(struct attr *new, struct attr *orig, |
570 | struct prefix *new_nexthop, | |
fe08ba7e DS |
571 | struct agg_node *rn) /* for VN addrs for ecom list */ |
572 | /* if rn is 0, use route's nexthop */ | |
65efcfce | 573 | { |
d62a17ae | 574 | struct prefix orig_nexthop; |
575 | struct prefix *use_nexthop; | |
576 | static struct ecommunity *ecom_ro; | |
577 | ||
578 | if (new_nexthop) { | |
579 | use_nexthop = new_nexthop; | |
580 | } else { | |
581 | use_nexthop = &orig_nexthop; | |
582 | orig_nexthop.family = | |
583 | BGP_MP_NEXTHOP_FAMILY(orig->mp_nexthop_len); | |
584 | if (orig_nexthop.family == AF_INET) { | |
12256b84 | 585 | orig_nexthop.prefixlen = IPV4_MAX_BITLEN; |
d62a17ae | 586 | orig_nexthop.u.prefix4 = orig->mp_nexthop_global_in; |
587 | } else if (orig_nexthop.family == AF_INET6) { | |
13ccce6e | 588 | orig_nexthop.prefixlen = IPV6_MAX_BITLEN; |
d62a17ae | 589 | orig_nexthop.u.prefix6 = orig->mp_nexthop_global; |
590 | } else { | |
591 | return -1; /* FAIL - can't compute nexthop */ | |
592 | } | |
593 | } | |
594 | ||
595 | ||
596 | /* | |
597 | * Make "new" a ghost attr copy of "orig" | |
598 | */ | |
599 | memset(new, 0, sizeof(struct attr)); | |
6f4f49b2 | 600 | *new = *orig; |
d62a17ae | 601 | |
602 | /* | |
603 | * Set nexthop | |
604 | */ | |
605 | switch (use_nexthop->family) { | |
606 | case AF_INET: | |
607 | new->nexthop = use_nexthop->u.prefix4; | |
0606039c | 608 | new->mp_nexthop_len = BGP_ATTR_NHLEN_IPV4; /* bytes */ |
d62a17ae | 609 | new->flag |= ATTR_FLAG_BIT(BGP_ATTR_NEXT_HOP); |
610 | break; | |
611 | ||
612 | case AF_INET6: | |
613 | new->mp_nexthop_global = use_nexthop->u.prefix6; | |
0606039c | 614 | new->mp_nexthop_len = BGP_ATTR_NHLEN_IPV6_GLOBAL; /* bytes */ |
d62a17ae | 615 | break; |
616 | ||
617 | default: | |
618 | assert(0); | |
619 | break; | |
620 | } | |
621 | ||
622 | if (rn) { | |
623 | ecom_ro = vnc_route_origin_ecom(rn); | |
624 | } else { | |
7f88f54a | 625 | /* TBD use lcom for IPv6 */ |
d62a17ae | 626 | ecom_ro = vnc_route_origin_ecom_single(&use_nexthop->u.prefix4); |
627 | } | |
b53e67a3 | 628 | if (bgp_attr_get_ecommunity(new)) { |
d62a17ae | 629 | if (ecom_ro) |
b53e67a3 DA |
630 | bgp_attr_set_ecommunity( |
631 | new, | |
632 | ecommunity_merge(ecom_ro, | |
633 | bgp_attr_get_ecommunity(new))); | |
d62a17ae | 634 | } else { |
b53e67a3 | 635 | bgp_attr_set_ecommunity(new, ecom_ro); |
d62a17ae | 636 | } |
d62a17ae | 637 | |
638 | /* | |
639 | * Set MED | |
640 | * | |
641 | * Note that it will be deleted when BGP sends to any eBGP | |
642 | * peer unless PEER_FLAG_MED_UNCHANGED is set: | |
643 | * | |
644 | * neighbor NEIGHBOR attribute-unchanged med | |
645 | */ | |
646 | if (!CHECK_FLAG(new->flag, BGP_ATTR_MULTI_EXIT_DISC)) { | |
647 | if (CHECK_FLAG(new->flag, BGP_ATTR_LOCAL_PREF)) { | |
648 | if (new->local_pref > 255) | |
649 | new->med = 0; | |
650 | else | |
651 | new->med = 255 - new->local_pref; | |
652 | } else { | |
653 | new->med = 255; /* shouldn't happen */ | |
654 | } | |
655 | new->flag |= ATTR_FLAG_BIT(BGP_ATTR_MULTI_EXIT_DISC); | |
656 | } | |
657 | ||
658 | /* | |
659 | * "new" is now a ghost attr: | |
660 | * - it owns an "extra" struct | |
661 | * - it owns any non-interned parts | |
662 | * - any references to interned parts are not counted | |
663 | * | |
664 | * Caller should, after using the attr, call: | |
665 | * - bgp_attr_flush() to free non-interned parts | |
666 | */ | |
667 | ||
668 | return 0; | |
65efcfce LB |
669 | } |
670 | ||
671 | /* | |
672 | * "Adding a Route" export process | |
673 | */ | |
d62a17ae | 674 | void vnc_direct_bgp_add_prefix(struct bgp *bgp, |
675 | struct rfapi_import_table *import_table, | |
fe08ba7e | 676 | struct agg_node *rn) |
65efcfce | 677 | { |
d62a17ae | 678 | struct attr attr = {0}; |
679 | struct listnode *node, *nnode; | |
680 | struct rfapi_rfg_name *rfgn; | |
26a3ffd6 DS |
681 | const struct prefix *p = agg_node_get_prefix(rn); |
682 | afi_t afi = family2afi(p->family); | |
d62a17ae | 683 | |
684 | if (!afi) { | |
1c50c1c0 QY |
685 | flog_err(EC_LIB_DEVELOPMENT, "%s: can't get afi of route node", |
686 | __func__); | |
d62a17ae | 687 | return; |
688 | } | |
689 | ||
690 | /* check bgp redist flag for vnc direct ("vpn") routes */ | |
691 | if (!bgp->redist[afi][ZEBRA_ROUTE_VNC_DIRECT]) { | |
692 | vnc_zlog_debug_verbose( | |
693 | "%s: bgp redistribution of VNC direct routes is off", | |
694 | __func__); | |
695 | return; | |
696 | } | |
697 | ||
698 | if (!bgp->rfapi_cfg) { | |
699 | vnc_zlog_debug_verbose("%s: bgp->rfapi_cfg is NULL, skipping", | |
700 | __func__); | |
701 | return; | |
702 | } | |
703 | ||
704 | if (!VNC_EXPORT_BGP_GRP_ENABLED(bgp->rfapi_cfg)) { | |
705 | vnc_zlog_debug_verbose( | |
706 | "%s: export-to-bgp group mode not enabled, skipping", | |
707 | __func__); | |
708 | return; | |
709 | } | |
710 | ||
711 | if (!listcount(bgp->rfapi_cfg->rfg_export_direct_bgp_l)) { | |
712 | vnc_zlog_debug_verbose( | |
713 | "%s: no bgp-direct export nve group, skipping", | |
714 | __func__); | |
715 | return; | |
716 | } | |
717 | ||
0f05ea43 | 718 | bgp_attr_default_set(&attr, bgp, BGP_ORIGIN_INCOMPLETE); |
d62a17ae | 719 | /* TBD set some configured med, see add_vnc_route() */ |
720 | ||
721 | vnc_zlog_debug_verbose( | |
722 | "%s: looping over nve-groups in direct-bgp export list", | |
723 | __func__); | |
724 | ||
725 | for (ALL_LIST_ELEMENTS(bgp->rfapi_cfg->rfg_export_direct_bgp_l, node, | |
726 | nnode, rfgn)) { | |
727 | ||
728 | struct listnode *ln; | |
729 | ||
730 | /* | |
731 | * If nve group is not defined yet, skip it | |
732 | */ | |
733 | if (!rfgn->rfg) | |
734 | continue; | |
735 | ||
736 | /* | |
737 | * If the nve group uses a different import table, skip it | |
738 | */ | |
739 | if (import_table != rfgn->rfg->rfapi_import_table) | |
740 | continue; | |
741 | ||
742 | /* | |
743 | * if no NVEs currently associated with this group, skip it | |
744 | */ | |
d477c01d | 745 | if (rfgn->rfg->type != RFAPI_GROUP_CFG_VRF && !rfgn->rfg->nves) |
d62a17ae | 746 | continue; |
747 | ||
748 | /* | |
749 | * per-nve-group prefix list check | |
750 | */ | |
751 | if (rfgn->rfg->plist_export_bgp[afi]) { | |
752 | if (prefix_list_apply(rfgn->rfg->plist_export_bgp[afi], | |
26a3ffd6 | 753 | p) |
d62a17ae | 754 | == PREFIX_DENY) |
755 | ||
756 | continue; | |
757 | } | |
758 | ||
d477c01d LB |
759 | if (rfgn->rfg->type == RFAPI_GROUP_CFG_VRF) { |
760 | vnc_direct_add_rn_group_rd(bgp, rfgn->rfg, rn, &attr, | |
761 | afi, rfgn->rfg->rfd); | |
e1541bf6 LB |
762 | /* |
763 | * yuck! | |
764 | * - but consistent with rest of function | |
765 | */ | |
766 | continue; | |
d477c01d | 767 | } |
d62a17ae | 768 | /* |
769 | * For each NVE that is assigned to the export nve group, | |
770 | * generate | |
771 | * a route with that NVE as its next hop | |
772 | */ | |
773 | for (ln = listhead(rfgn->rfg->nves); ln; | |
774 | ln = listnextnode(ln)) { | |
d477c01d LB |
775 | vnc_direct_add_rn_group_rd(bgp, rfgn->rfg, rn, &attr, |
776 | afi, listgetdata(ln)); | |
d62a17ae | 777 | } |
778 | } | |
779 | ||
780 | aspath_unintern(&attr.aspath); | |
65efcfce LB |
781 | } |
782 | ||
783 | /* | |
784 | * "Withdrawing a Route" export process | |
785 | */ | |
d62a17ae | 786 | void vnc_direct_bgp_del_prefix(struct bgp *bgp, |
787 | struct rfapi_import_table *import_table, | |
fe08ba7e | 788 | struct agg_node *rn) |
65efcfce | 789 | { |
d62a17ae | 790 | struct listnode *node, *nnode; |
791 | struct rfapi_rfg_name *rfgn; | |
26a3ffd6 DS |
792 | const struct prefix *p = agg_node_get_prefix(rn); |
793 | afi_t afi = family2afi(p->family); | |
d62a17ae | 794 | |
795 | if (!afi) { | |
450971aa | 796 | flog_err(EC_LIB_DEVELOPMENT, "%s: can't get afi route node", |
1c50c1c0 | 797 | __func__); |
d62a17ae | 798 | return; |
799 | } | |
800 | ||
801 | /* check bgp redist flag for vnc direct ("vpn") routes */ | |
802 | if (!bgp->redist[afi][ZEBRA_ROUTE_VNC_DIRECT]) { | |
803 | vnc_zlog_debug_verbose( | |
804 | "%s: bgp redistribution of VNC direct routes is off", | |
805 | __func__); | |
806 | return; | |
807 | } | |
808 | ||
809 | if (!bgp->rfapi_cfg) { | |
810 | vnc_zlog_debug_verbose("%s: bgp->rfapi_cfg is NULL, skipping", | |
811 | __func__); | |
812 | return; | |
813 | } | |
814 | ||
815 | if (!VNC_EXPORT_BGP_GRP_ENABLED(bgp->rfapi_cfg)) { | |
816 | vnc_zlog_debug_verbose( | |
817 | "%s: export-to-bgp group mode not enabled, skipping", | |
818 | __func__); | |
819 | return; | |
820 | } | |
821 | ||
822 | if (!listcount(bgp->rfapi_cfg->rfg_export_direct_bgp_l)) { | |
823 | vnc_zlog_debug_verbose( | |
824 | "%s: no bgp-direct export nve group, skipping", | |
825 | __func__); | |
826 | return; | |
827 | } | |
828 | ||
829 | for (ALL_LIST_ELEMENTS(bgp->rfapi_cfg->rfg_export_direct_bgp_l, node, | |
830 | nnode, rfgn)) { | |
831 | ||
832 | struct listnode *ln; | |
833 | ||
834 | /* | |
835 | * If nve group is not defined yet, skip it | |
836 | */ | |
837 | if (!rfgn->rfg) | |
838 | continue; | |
839 | ||
840 | /* | |
841 | * if no NVEs currently associated with this group, skip it | |
842 | */ | |
d477c01d | 843 | if (rfgn->rfg->type != RFAPI_GROUP_CFG_VRF && !rfgn->rfg->nves) |
d62a17ae | 844 | continue; |
845 | ||
846 | /* | |
847 | * If the nve group uses a different import table, | |
848 | * skip it | |
849 | */ | |
850 | if (import_table != rfgn->rfg->rfapi_import_table) | |
851 | continue; | |
852 | ||
d477c01d LB |
853 | if (rfgn->rfg->type == RFAPI_GROUP_CFG_VRF) { |
854 | struct prefix nhp; | |
855 | struct rfapi_descriptor *irfd; | |
856 | ||
857 | irfd = rfgn->rfg->rfd; | |
858 | ||
859 | if (rfapiRaddr2Qprefix(&irfd->vn_addr, &nhp)) | |
860 | continue; | |
861 | ||
26a3ffd6 DS |
862 | bgp_withdraw(irfd->peer, p, /* prefix */ |
863 | 0, /* addpath_id */ | |
d477c01d LB |
864 | afi, SAFI_UNICAST, ZEBRA_ROUTE_VNC_DIRECT, |
865 | BGP_ROUTE_REDISTRIBUTE, | |
996c9314 LB |
866 | NULL, /* RD not used for unicast */ |
867 | NULL, 0, | |
868 | NULL); /* tag not used for unicast */ | |
e1541bf6 LB |
869 | /* |
870 | * yuck! | |
871 | * - but consistent with rest of function | |
872 | */ | |
873 | continue; | |
d477c01d | 874 | } |
d62a17ae | 875 | /* |
876 | * For each NVE that is assigned to the export nve group, | |
877 | * generate | |
878 | * a route with that NVE as its next hop | |
879 | */ | |
880 | for (ln = listhead(rfgn->rfg->nves); ln; | |
881 | ln = listnextnode(ln)) { | |
882 | ||
883 | struct prefix nhp; | |
884 | struct rfapi_descriptor *irfd; | |
885 | ||
886 | irfd = listgetdata(ln); | |
887 | ||
888 | if (rfapiRaddr2Qprefix(&irfd->vn_addr, &nhp)) | |
889 | continue; | |
890 | ||
26a3ffd6 DS |
891 | bgp_withdraw(irfd->peer, p, /* prefix */ |
892 | 0, /* addpath_id */ | |
d62a17ae | 893 | afi, SAFI_UNICAST, ZEBRA_ROUTE_VNC_DIRECT, |
894 | BGP_ROUTE_REDISTRIBUTE, | |
996c9314 LB |
895 | NULL, /* RD not used for unicast */ |
896 | NULL, 0, | |
897 | NULL); /* tag not used for unicast */ | |
d62a17ae | 898 | } |
899 | } | |
65efcfce LB |
900 | } |
901 | ||
d62a17ae | 902 | void vnc_direct_bgp_add_nve(struct bgp *bgp, struct rfapi_descriptor *rfd) |
65efcfce | 903 | { |
d62a17ae | 904 | struct listnode *node, *nnode; |
905 | struct rfapi_rfg_name *rfgn; | |
906 | struct rfapi_nve_group_cfg *rfg = rfd->rfg; | |
907 | afi_t afi = family2afi(rfd->vn_addr.addr_family); | |
908 | ||
909 | if (!afi) { | |
1c50c1c0 QY |
910 | flog_err(EC_LIB_DEVELOPMENT, "%s: can't get afi of nve vn addr", |
911 | __func__); | |
d62a17ae | 912 | return; |
913 | } | |
914 | ||
915 | if (!bgp) | |
916 | return; | |
917 | if (!bgp->rfapi_cfg) { | |
918 | vnc_zlog_debug_verbose("%s: bgp->rfapi_cfg is NULL, skipping", | |
919 | __func__); | |
920 | return; | |
921 | } | |
922 | if (!VNC_EXPORT_BGP_GRP_ENABLED(bgp->rfapi_cfg)) { | |
923 | vnc_zlog_debug_verbose( | |
924 | "%s: export-to-bgp group mode not enabled, skipping", | |
925 | __func__); | |
926 | return; | |
927 | } | |
928 | ||
929 | if (!bgp->redist[afi][ZEBRA_ROUTE_VNC_DIRECT]) { | |
930 | vnc_zlog_debug_verbose( | |
931 | "%s: bgp redistribution of VNC direct routes is off", | |
932 | __func__); | |
933 | return; | |
934 | } | |
935 | ||
936 | /* | |
937 | * Loop over the list of NVE-Groups configured for | |
938 | * exporting to direct-bgp and see if this new NVE's | |
939 | * group is among them. | |
940 | */ | |
941 | for (ALL_LIST_ELEMENTS(bgp->rfapi_cfg->rfg_export_direct_bgp_l, node, | |
942 | nnode, rfgn)) { | |
943 | ||
944 | /* | |
945 | * Yes, this NVE's group is configured for export to direct-bgp | |
946 | */ | |
947 | if (rfgn->rfg == rfg) { | |
948 | ||
fe08ba7e DS |
949 | struct agg_table *rt = NULL; |
950 | struct agg_node *rn; | |
d62a17ae | 951 | struct attr attr = {0}; |
952 | struct rfapi_import_table *import_table; | |
953 | ||
954 | ||
955 | import_table = rfg->rfapi_import_table; | |
956 | ||
d62a17ae | 957 | if (afi == AFI_IP || afi == AFI_IP6) { |
958 | rt = import_table->imported_vpn[afi]; | |
959 | } else { | |
450971aa | 960 | flog_err(EC_LIB_DEVELOPMENT, "%s: bad afi %d", |
1c50c1c0 | 961 | __func__, afi); |
d62a17ae | 962 | return; |
963 | } | |
964 | ||
0f05ea43 | 965 | bgp_attr_default_set(&attr, bgp, BGP_ORIGIN_INCOMPLETE); |
606c3f9f IR |
966 | /* TBD set some configured med, see add_vnc_route() */ |
967 | ||
d62a17ae | 968 | /* |
969 | * Walk the NVE-Group's VNC Import table | |
970 | */ | |
fe08ba7e DS |
971 | for (rn = agg_route_top(rt); rn; |
972 | rn = agg_route_next(rn)) { | |
d62a17ae | 973 | |
974 | if (rn->info) { | |
975 | ||
976 | struct prefix nhp; | |
977 | struct rfapi_descriptor *irfd = rfd; | |
978 | struct attr hattr; | |
979 | struct attr *iattr; | |
4b7e6066 | 980 | struct bgp_path_info info; |
26a3ffd6 DS |
981 | const struct prefix *p = |
982 | agg_node_get_prefix(rn); | |
d62a17ae | 983 | |
984 | if (rfapiRaddr2Qprefix(&irfd->vn_addr, | |
985 | &nhp)) | |
986 | continue; | |
987 | ||
988 | /* | |
989 | * per-nve-group prefix list check | |
990 | */ | |
991 | if (rfgn->rfg->plist_export_bgp[afi]) { | |
992 | if (prefix_list_apply( | |
993 | rfgn->rfg->plist_export_bgp | |
994 | [afi], | |
26a3ffd6 | 995 | p) |
d62a17ae | 996 | == PREFIX_DENY) |
997 | ||
998 | continue; | |
999 | } | |
1000 | ||
1001 | ||
1002 | /* | |
1003 | * Construct new attribute set with | |
1004 | * NVE's VN addr as | |
1005 | * nexthop and without Tunnel Encap attr | |
1006 | */ | |
1007 | if (encap_attr_export(&hattr, &attr, | |
1008 | &nhp, rn)) | |
1009 | continue; | |
1010 | ||
1011 | if (rfgn->rfg->routemap_export_bgp) { | |
1012 | route_map_result_t ret; | |
1013 | info.peer = irfd->peer; | |
1014 | info.attr = &hattr; | |
1015 | ret = route_map_apply( | |
1016 | rfgn->rfg | |
1017 | ->routemap_export_bgp, | |
1782514f | 1018 | p, &info); |
d62a17ae | 1019 | if (ret == RMAP_DENYMATCH) { |
1020 | bgp_attr_flush(&hattr); | |
1021 | continue; | |
1022 | } | |
1023 | } | |
1024 | ||
1025 | iattr = bgp_attr_intern(&hattr); | |
1026 | bgp_attr_flush(&hattr); | |
3380418f | 1027 | bgp_update( |
26a3ffd6 DS |
1028 | irfd->peer, p, /* prefix */ |
1029 | 0, /* addpath_id */ | |
3380418f LB |
1030 | iattr, /* bgp_update copies |
1031 | it */ | |
1032 | afi, SAFI_UNICAST, | |
1033 | ZEBRA_ROUTE_VNC_DIRECT, | |
1034 | BGP_ROUTE_REDISTRIBUTE, NULL, | |
1035 | /* RD not used for unicast */ | |
1036 | NULL, | |
1037 | /* tag not used for unicast */ | |
1038 | 0, 0, NULL); /* EVPN not used */ | |
d62a17ae | 1039 | |
1040 | bgp_attr_unintern(&iattr); | |
1041 | } | |
1042 | } | |
1043 | ||
1044 | aspath_unintern(&attr.aspath); | |
1045 | } | |
1046 | } | |
65efcfce LB |
1047 | } |
1048 | ||
1049 | ||
d62a17ae | 1050 | void vnc_direct_bgp_del_nve(struct bgp *bgp, struct rfapi_descriptor *rfd) |
65efcfce | 1051 | { |
d62a17ae | 1052 | struct listnode *node, *nnode; |
1053 | struct rfapi_rfg_name *rfgn; | |
1054 | struct rfapi_nve_group_cfg *rfg = rfd->rfg; | |
1055 | afi_t afi = family2afi(rfd->vn_addr.addr_family); | |
1056 | ||
1057 | if (!afi) { | |
1c50c1c0 QY |
1058 | flog_err(EC_LIB_DEVELOPMENT, "%s: can't get afi of nve vn addr", |
1059 | __func__); | |
d62a17ae | 1060 | return; |
1061 | } | |
1062 | ||
1063 | if (!bgp) | |
1064 | return; | |
1065 | if (!bgp->rfapi_cfg) { | |
1066 | vnc_zlog_debug_verbose("%s: bgp->rfapi_cfg is NULL, skipping", | |
1067 | __func__); | |
1068 | return; | |
1069 | } | |
1070 | if (!VNC_EXPORT_BGP_GRP_ENABLED(bgp->rfapi_cfg)) { | |
1071 | vnc_zlog_debug_verbose( | |
1072 | "%s: export-to-bgp group mode not enabled, skipping", | |
1073 | __func__); | |
1074 | return; | |
1075 | } | |
1076 | ||
1077 | if (!bgp->redist[afi][ZEBRA_ROUTE_VNC_DIRECT]) { | |
1078 | vnc_zlog_debug_verbose( | |
1079 | "%s: bgp redistribution of VNC direct routes is off", | |
1080 | __func__); | |
1081 | return; | |
1082 | } | |
65efcfce | 1083 | |
d62a17ae | 1084 | /* |
1085 | * Loop over the list of NVE-Groups configured for | |
1086 | * exporting to direct-bgp and see if this new NVE's | |
1087 | * group is among them. | |
1088 | */ | |
1089 | for (ALL_LIST_ELEMENTS(bgp->rfapi_cfg->rfg_export_direct_bgp_l, node, | |
1090 | nnode, rfgn)) { | |
1091 | ||
1092 | /* | |
1093 | * Yes, this NVE's group is configured for export to direct-bgp | |
1094 | */ | |
1095 | if (rfg && rfgn->rfg == rfg) { | |
1096 | ||
fe08ba7e DS |
1097 | struct agg_table *rt = NULL; |
1098 | struct agg_node *rn; | |
d62a17ae | 1099 | struct rfapi_import_table *import_table; |
1100 | ||
1101 | import_table = rfg->rfapi_import_table; | |
1102 | ||
1103 | if (afi == AFI_IP || afi == AFI_IP6) { | |
1104 | rt = import_table->imported_vpn[afi]; | |
1105 | } else { | |
450971aa | 1106 | flog_err(EC_LIB_DEVELOPMENT, "%s: bad afi %d", |
1c50c1c0 | 1107 | __func__, afi); |
d62a17ae | 1108 | return; |
1109 | } | |
1110 | ||
1111 | /* | |
1112 | * Walk the NVE-Group's VNC Import table | |
1113 | */ | |
fe08ba7e DS |
1114 | for (rn = agg_route_top(rt); rn; |
1115 | rn = agg_route_next(rn)) { | |
d62a17ae | 1116 | |
1117 | if (rn->info) { | |
26a3ffd6 DS |
1118 | const struct prefix *p = |
1119 | agg_node_get_prefix(rn); | |
d62a17ae | 1120 | struct prefix nhp; |
1121 | struct rfapi_descriptor *irfd = rfd; | |
1122 | ||
1123 | if (rfapiRaddr2Qprefix(&irfd->vn_addr, | |
1124 | &nhp)) | |
1125 | continue; | |
1126 | ||
26a3ffd6 DS |
1127 | bgp_withdraw(irfd->peer, p, /* prefix */ |
1128 | 0, /* addpath_id */ | |
d62a17ae | 1129 | afi, SAFI_UNICAST, |
1130 | ZEBRA_ROUTE_VNC_DIRECT, | |
1131 | BGP_ROUTE_REDISTRIBUTE, | |
1132 | NULL, /* RD not used for | |
1133 | unicast */ | |
317f1fe0 | 1134 | NULL, 0, NULL); /* tag not |
d62a17ae | 1135 | used for |
1136 | unicast */ | |
1137 | } | |
1138 | } | |
1139 | } | |
1140 | } | |
1141 | } | |
65efcfce | 1142 | |
d477c01d LB |
1143 | static void vnc_direct_add_rn_group_rd(struct bgp *bgp, |
1144 | struct rfapi_nve_group_cfg *rfg, | |
fe08ba7e | 1145 | struct agg_node *rn, struct attr *attr, |
996c9314 | 1146 | afi_t afi, struct rfapi_descriptor *irfd) |
d477c01d LB |
1147 | { |
1148 | struct prefix nhp; | |
4b7e6066 | 1149 | struct bgp_path_info info; |
d477c01d LB |
1150 | struct attr hattr; |
1151 | struct attr *iattr; | |
26a3ffd6 | 1152 | const struct prefix *p = agg_node_get_prefix(rn); |
d477c01d LB |
1153 | |
1154 | if (irfd == NULL && rfg->type != RFAPI_GROUP_CFG_VRF) { | |
1155 | /* need new rfapi_handle, for peer strcture | |
1156 | * -- based on vnc_add_vrf_prefi */ | |
e1541bf6 | 1157 | assert(rfg->rfd == NULL); |
d477c01d LB |
1158 | |
1159 | if (!rfg->rt_export_list || !rfg->rfapi_import_table) { | |
996c9314 | 1160 | vnc_zlog_debug_verbose( |
1d5453d6 | 1161 | "%s: VRF \"%s\" is missing RT import/export configuration.", |
996c9314 | 1162 | __func__, rfg->name); |
d477c01d LB |
1163 | return; |
1164 | } | |
1165 | if (!rfg->rd.prefixlen) { | |
996c9314 | 1166 | vnc_zlog_debug_verbose( |
1d5453d6 | 1167 | "%s: VRF \"%s\" is missing RD configuration.", |
996c9314 | 1168 | __func__, rfg->name); |
d477c01d LB |
1169 | return; |
1170 | } | |
1171 | if (rfg->label > MPLS_LABEL_MAX) { | |
996c9314 | 1172 | vnc_zlog_debug_verbose( |
1d5453d6 | 1173 | "%s: VRF \"%s\" is missing default label configuration.", |
996c9314 | 1174 | __func__, rfg->name); |
d477c01d LB |
1175 | return; |
1176 | } | |
1177 | ||
1178 | irfd = XCALLOC(MTYPE_RFAPI_DESC, | |
996c9314 | 1179 | sizeof(struct rfapi_descriptor)); |
d477c01d LB |
1180 | irfd->bgp = bgp; |
1181 | rfg->rfd = irfd; | |
e1541bf6 LB |
1182 | /* |
1183 | * leave most fields empty as will get from (dynamic) config | |
1184 | * when needed | |
1185 | */ | |
d477c01d LB |
1186 | irfd->default_tunneltype_option.type = BGP_ENCAP_TYPE_MPLS; |
1187 | irfd->cookie = rfg; | |
1188 | if (rfg->vn_prefix.family | |
1189 | && !CHECK_FLAG(rfg->flags, RFAPI_RFG_VPN_NH_SELF)) { | |
1190 | rfapiQprefix2Raddr(&rfg->vn_prefix, &irfd->vn_addr); | |
1191 | } else { | |
1192 | memset(&irfd->vn_addr, 0, sizeof(struct rfapi_ip_addr)); | |
1193 | irfd->vn_addr.addr_family = AF_INET; | |
1194 | irfd->vn_addr.addr.v4 = bgp->router_id; | |
1195 | } | |
1196 | irfd->un_addr = irfd->vn_addr; /* sigh, need something in UN for | |
1197 | lookups */ | |
1198 | vnc_zlog_debug_verbose("%s: Opening RFD for VRF %s", __func__, | |
1199 | rfg->name); | |
1200 | rfapi_init_and_open(bgp, irfd, rfg); | |
1201 | } | |
1202 | ||
1203 | if (irfd == NULL || rfapiRaddr2Qprefix(&irfd->vn_addr, &nhp)) | |
1204 | return; | |
1205 | ||
1206 | /* | |
1207 | * Construct new attribute set with NVE's VN | |
1208 | * addr as | |
1209 | * nexthop and without Tunnel Encap attr | |
1210 | */ | |
1211 | if (encap_attr_export(&hattr, attr, &nhp, rn)) | |
1212 | return; | |
1213 | ||
1214 | if (VNC_DEBUG(EXPORT_BGP_DIRECT_ADD)) { | |
996c9314 | 1215 | vnc_zlog_debug_any("%s: attr follows", __func__); |
d477c01d | 1216 | rfapiPrintAttrPtrs(NULL, attr); |
996c9314 | 1217 | vnc_zlog_debug_any("%s: hattr follows", __func__); |
d477c01d LB |
1218 | rfapiPrintAttrPtrs(NULL, &hattr); |
1219 | } | |
1220 | ||
1221 | if (rfg->routemap_export_bgp) { | |
1222 | route_map_result_t ret; | |
e1541bf6 | 1223 | |
d477c01d LB |
1224 | info.peer = irfd->peer; |
1225 | info.attr = &hattr; | |
1782514f | 1226 | ret = route_map_apply(rfg->routemap_export_bgp, p, &info); |
d477c01d LB |
1227 | if (ret == RMAP_DENYMATCH) { |
1228 | bgp_attr_flush(&hattr); | |
996c9314 LB |
1229 | vnc_zlog_debug_verbose( |
1230 | "%s: route map says DENY, so not calling bgp_update", | |
1231 | __func__); | |
d477c01d LB |
1232 | return; |
1233 | } | |
1234 | } | |
1235 | ||
1236 | if (VNC_DEBUG(EXPORT_BGP_DIRECT_ADD)) { | |
e1541bf6 | 1237 | vnc_zlog_debug_any("%s: hattr after route_map_apply:", |
d477c01d LB |
1238 | __func__); |
1239 | rfapiPrintAttrPtrs(NULL, &hattr); | |
1240 | } | |
1241 | iattr = bgp_attr_intern(&hattr); | |
1242 | bgp_attr_flush(&hattr); | |
1243 | ||
26a3ffd6 DS |
1244 | bgp_update(irfd->peer, p, /* prefix */ |
1245 | 0, /* addpath_id */ | |
1246 | iattr, /* bgp_update copies it */ | |
996c9314 LB |
1247 | afi, SAFI_UNICAST, ZEBRA_ROUTE_VNC_DIRECT, |
1248 | BGP_ROUTE_REDISTRIBUTE, NULL, /* RD not used for unicast */ | |
1249 | NULL, /* tag not used for unicast */ | |
1250 | 0, 0, NULL); /* EVPN not used */ | |
d477c01d LB |
1251 | |
1252 | bgp_attr_unintern(&iattr); | |
1253 | ||
1254 | return; | |
1255 | } | |
65efcfce LB |
1256 | |
1257 | /* | |
1258 | * Caller is responsible for ensuring that the specified nve-group | |
1259 | * is actually part of the list of exported nve groups. | |
1260 | */ | |
d62a17ae | 1261 | static void vnc_direct_bgp_add_group_afi(struct bgp *bgp, |
1262 | struct rfapi_nve_group_cfg *rfg, | |
1263 | afi_t afi) | |
65efcfce | 1264 | { |
fe08ba7e DS |
1265 | struct agg_table *rt = NULL; |
1266 | struct agg_node *rn; | |
d62a17ae | 1267 | struct attr attr = {0}; |
1268 | struct rfapi_import_table *import_table; | |
1269 | ||
1270 | vnc_zlog_debug_verbose("%s: entry", __func__); | |
1271 | ||
1272 | import_table = rfg->rfapi_import_table; | |
1273 | if (!import_table) { | |
1274 | vnc_zlog_debug_verbose( | |
1275 | "%s: import table not defined, returning", __func__); | |
1276 | return; | |
1277 | } | |
1278 | ||
1279 | if (afi == AFI_IP || afi == AFI_IP6) { | |
1280 | rt = import_table->imported_vpn[afi]; | |
1281 | } else { | |
450971aa | 1282 | flog_err(EC_LIB_DEVELOPMENT, "%s: bad afi %d", __func__, afi); |
d62a17ae | 1283 | return; |
1284 | } | |
1285 | ||
d477c01d | 1286 | if (!rfg->nves && rfg->type != RFAPI_GROUP_CFG_VRF) { |
d62a17ae | 1287 | vnc_zlog_debug_verbose("%s: no NVEs in this group", __func__); |
1288 | return; | |
1289 | } | |
1290 | ||
0f05ea43 | 1291 | bgp_attr_default_set(&attr, bgp, BGP_ORIGIN_INCOMPLETE); |
d62a17ae | 1292 | /* TBD set some configured med, see add_vnc_route() */ |
1293 | ||
1294 | /* | |
1295 | * Walk the NVE-Group's VNC Import table | |
1296 | */ | |
fe08ba7e | 1297 | for (rn = agg_route_top(rt); rn; rn = agg_route_next(rn)) { |
d62a17ae | 1298 | |
1299 | if (rn->info) { | |
26a3ffd6 | 1300 | const struct prefix *p = agg_node_get_prefix(rn); |
d62a17ae | 1301 | struct listnode *ln; |
1302 | ||
1303 | /* | |
1304 | * per-nve-group prefix list check | |
1305 | */ | |
1306 | if (rfg->plist_export_bgp[afi]) { | |
1307 | if (prefix_list_apply( | |
26a3ffd6 | 1308 | rfg->plist_export_bgp[afi], p) |
d62a17ae | 1309 | == PREFIX_DENY) |
1310 | ||
1311 | continue; | |
1312 | } | |
d477c01d LB |
1313 | if (rfg->type == RFAPI_GROUP_CFG_VRF) { |
1314 | vnc_direct_add_rn_group_rd(bgp, rfg, rn, &attr, | |
1315 | afi, rfg->rfd); | |
e1541bf6 LB |
1316 | /* |
1317 | * yuck! | |
1318 | * - but consistent with rest of function | |
1319 | */ | |
1320 | continue; | |
d477c01d | 1321 | } |
d62a17ae | 1322 | /* |
1323 | * For each NVE that is assigned to the export nve | |
1324 | * group, generate | |
1325 | * a route with that NVE as its next hop | |
1326 | */ | |
1327 | for (ln = listhead(rfg->nves); ln; | |
1328 | ln = listnextnode(ln)) { | |
d477c01d | 1329 | vnc_direct_add_rn_group_rd(bgp, rfg, rn, &attr, |
996c9314 LB |
1330 | afi, |
1331 | listgetdata(ln)); | |
d62a17ae | 1332 | } |
1333 | } | |
1334 | } | |
1335 | ||
1336 | aspath_unintern(&attr.aspath); | |
65efcfce LB |
1337 | } |
1338 | ||
1339 | ||
1340 | /* | |
1341 | * Caller is responsible for ensuring that the specified nve-group | |
1342 | * is actually part of the list of exported nve groups. | |
1343 | */ | |
d62a17ae | 1344 | void vnc_direct_bgp_add_group(struct bgp *bgp, struct rfapi_nve_group_cfg *rfg) |
65efcfce | 1345 | { |
d62a17ae | 1346 | vnc_direct_bgp_add_group_afi(bgp, rfg, AFI_IP); |
1347 | vnc_direct_bgp_add_group_afi(bgp, rfg, AFI_IP6); | |
65efcfce LB |
1348 | } |
1349 | ||
d477c01d LB |
1350 | static void vnc_direct_del_rn_group_rd(struct bgp *bgp, |
1351 | struct rfapi_nve_group_cfg *rfg, | |
fe08ba7e | 1352 | struct agg_node *rn, afi_t afi, |
d477c01d LB |
1353 | struct rfapi_descriptor *irfd) |
1354 | { | |
1355 | if (irfd == NULL) | |
1356 | return; | |
26a3ffd6 DS |
1357 | |
1358 | bgp_withdraw(irfd->peer, agg_node_get_prefix(rn), /* prefix */ | |
1359 | 0, /* addpath_id */ | |
996c9314 LB |
1360 | afi, SAFI_UNICAST, ZEBRA_ROUTE_VNC_DIRECT, |
1361 | BGP_ROUTE_REDISTRIBUTE, NULL, /* RD not used for unicast */ | |
1362 | NULL, 0, NULL); /* tag not used for unicast */ | |
d477c01d LB |
1363 | return; |
1364 | } | |
65efcfce | 1365 | |
65efcfce LB |
1366 | /* |
1367 | * Caller is responsible for ensuring that the specified nve-group | |
1368 | * was actually part of the list of exported nve groups. | |
1369 | */ | |
d62a17ae | 1370 | static void vnc_direct_bgp_del_group_afi(struct bgp *bgp, |
1371 | struct rfapi_nve_group_cfg *rfg, | |
1372 | afi_t afi) | |
65efcfce | 1373 | { |
fe08ba7e DS |
1374 | struct agg_table *rt = NULL; |
1375 | struct agg_node *rn; | |
d62a17ae | 1376 | struct rfapi_import_table *import_table; |
1377 | ||
1378 | vnc_zlog_debug_verbose("%s: entry", __func__); | |
1379 | ||
1380 | import_table = rfg->rfapi_import_table; | |
1381 | if (!import_table) { | |
1382 | vnc_zlog_debug_verbose( | |
1383 | "%s: import table not defined, returning", __func__); | |
1384 | return; | |
1385 | } | |
1386 | ||
d62a17ae | 1387 | rt = import_table->imported_vpn[afi]; |
1388 | ||
d477c01d | 1389 | if (!rfg->nves && rfg->type != RFAPI_GROUP_CFG_VRF) { |
d62a17ae | 1390 | vnc_zlog_debug_verbose("%s: no NVEs in this group", __func__); |
1391 | return; | |
1392 | } | |
1393 | ||
1394 | /* | |
1395 | * Walk the NVE-Group's VNC Import table | |
1396 | */ | |
fe08ba7e | 1397 | for (rn = agg_route_top(rt); rn; rn = agg_route_next(rn)) |
d62a17ae | 1398 | if (rn->info) { |
d477c01d | 1399 | if (rfg->type == RFAPI_GROUP_CFG_VRF) |
996c9314 LB |
1400 | vnc_direct_del_rn_group_rd(bgp, rfg, rn, afi, |
1401 | rfg->rfd); | |
d477c01d LB |
1402 | else { |
1403 | struct listnode *ln; | |
d62a17ae | 1404 | |
d477c01d | 1405 | /* |
996c9314 LB |
1406 | * For each NVE that is assigned to the export |
1407 | * nve | |
d477c01d LB |
1408 | * group, generate |
1409 | * a route with that NVE as its next hop | |
1410 | */ | |
1411 | for (ln = listhead(rfg->nves); ln; | |
1412 | ln = listnextnode(ln)) | |
996c9314 LB |
1413 | vnc_direct_del_rn_group_rd( |
1414 | bgp, rfg, rn, afi, | |
1415 | listgetdata(ln)); | |
d62a17ae | 1416 | } |
1417 | } | |
65efcfce LB |
1418 | } |
1419 | ||
65efcfce LB |
1420 | /* |
1421 | * Caller is responsible for ensuring that the specified nve-group | |
1422 | * was actually part of the list of exported nve groups. | |
1423 | */ | |
d62a17ae | 1424 | void vnc_direct_bgp_del_group(struct bgp *bgp, struct rfapi_nve_group_cfg *rfg) |
65efcfce | 1425 | { |
d62a17ae | 1426 | vnc_direct_bgp_del_group_afi(bgp, rfg, AFI_IP); |
1427 | vnc_direct_bgp_del_group_afi(bgp, rfg, AFI_IP6); | |
65efcfce LB |
1428 | } |
1429 | ||
d62a17ae | 1430 | void vnc_direct_bgp_reexport_group_afi(struct bgp *bgp, |
1431 | struct rfapi_nve_group_cfg *rfg, | |
1432 | afi_t afi) | |
65efcfce | 1433 | { |
d62a17ae | 1434 | struct listnode *node; |
1435 | struct rfapi_rfg_name *rfgn; | |
1436 | ||
1437 | if (VNC_EXPORT_BGP_GRP_ENABLED(bgp->rfapi_cfg)) { | |
1438 | /* | |
1439 | * look in the list of currently-exported groups | |
1440 | */ | |
1441 | for (ALL_LIST_ELEMENTS_RO( | |
1442 | bgp->rfapi_cfg->rfg_export_direct_bgp_l, node, | |
1443 | rfgn)) { | |
1444 | ||
1445 | if (rfgn->rfg == rfg) { | |
1446 | /* | |
1447 | * If it matches, reexport it | |
1448 | */ | |
1449 | vnc_direct_bgp_del_group_afi(bgp, rfg, afi); | |
1450 | vnc_direct_bgp_add_group_afi(bgp, rfg, afi); | |
1451 | break; | |
1452 | } | |
1453 | } | |
1454 | } | |
65efcfce LB |
1455 | } |
1456 | ||
1457 | ||
fe08ba7e | 1458 | static void vnc_direct_bgp_unexport_table(afi_t afi, struct agg_table *rt, |
d62a17ae | 1459 | struct list *nve_list) |
65efcfce | 1460 | { |
d62a17ae | 1461 | if (nve_list) { |
1462 | ||
fe08ba7e | 1463 | struct agg_node *rn; |
d62a17ae | 1464 | |
fe08ba7e | 1465 | for (rn = agg_route_top(rt); rn; rn = agg_route_next(rn)) { |
d62a17ae | 1466 | |
1467 | if (rn->info) { | |
1468 | ||
1469 | struct listnode *hln; | |
1470 | struct rfapi_descriptor *irfd; | |
1471 | ||
1472 | for (ALL_LIST_ELEMENTS_RO(nve_list, hln, | |
1473 | irfd)) { | |
1474 | ||
1475 | bgp_withdraw(irfd->peer, | |
26a3ffd6 DS |
1476 | agg_node_get_prefix(rn), |
1477 | 0, /* addpath_id */ | |
d62a17ae | 1478 | afi, SAFI_UNICAST, |
1479 | ZEBRA_ROUTE_VNC_DIRECT, | |
1480 | BGP_ROUTE_REDISTRIBUTE, | |
1481 | NULL, /* RD not used for | |
1482 | unicast */ | |
317f1fe0 | 1483 | NULL, 0, NULL); /* tag not |
d62a17ae | 1484 | used for |
1485 | unicast, | |
1486 | EVPN | |
1487 | neither */ | |
1488 | } | |
1489 | } | |
1490 | } | |
1491 | } | |
65efcfce LB |
1492 | } |
1493 | ||
d62a17ae | 1494 | static void import_table_to_nve_list_direct_bgp(struct bgp *bgp, |
1495 | struct rfapi_import_table *it, | |
1496 | struct list **nves, | |
1497 | uint8_t family) | |
65efcfce | 1498 | { |
d62a17ae | 1499 | struct listnode *node; |
1500 | struct rfapi_rfg_name *rfgn; | |
1501 | ||
1502 | /* | |
1503 | * Loop over the list of NVE-Groups configured for | |
1504 | * exporting to direct-bgp. | |
1505 | * | |
1506 | * Build a list of NVEs that use this import table | |
1507 | */ | |
1508 | *nves = NULL; | |
1509 | for (ALL_LIST_ELEMENTS_RO(bgp->rfapi_cfg->rfg_export_direct_bgp_l, node, | |
1510 | rfgn)) { | |
1511 | ||
1512 | /* | |
1513 | * If this NVE-Group's import table matches the current one | |
1514 | */ | |
d477c01d LB |
1515 | if (rfgn->rfg && rfgn->rfg->rfapi_import_table == it) { |
1516 | if (rfgn->rfg->nves) | |
1517 | nve_group_to_nve_list(rfgn->rfg, nves, family); | |
996c9314 LB |
1518 | else if (rfgn->rfg->rfd |
1519 | && rfgn->rfg->type == RFAPI_GROUP_CFG_VRF) { | |
d477c01d LB |
1520 | if (!*nves) |
1521 | *nves = list_new(); | |
1522 | listnode_add(*nves, rfgn->rfg->rfd); | |
1523 | } | |
d62a17ae | 1524 | } |
1525 | } | |
65efcfce LB |
1526 | } |
1527 | ||
d62a17ae | 1528 | void vnc_direct_bgp_vpn_enable(struct bgp *bgp, afi_t afi) |
65efcfce | 1529 | { |
d62a17ae | 1530 | struct listnode *rfgn; |
1531 | struct rfapi_nve_group_cfg *rfg; | |
1532 | ||
1533 | if (!bgp) | |
1534 | return; | |
1535 | ||
1536 | if (!VNC_EXPORT_BGP_GRP_ENABLED(bgp->rfapi_cfg)) { | |
1537 | vnc_zlog_debug_verbose( | |
1538 | "%s: export-to-bgp group mode not enabled, skipping", | |
1539 | __func__); | |
1540 | return; | |
1541 | } | |
1542 | ||
1543 | if (afi != AFI_IP && afi != AFI_IP6) { | |
1544 | vnc_zlog_debug_verbose("%s: bad afi: %d", __func__, afi); | |
1545 | return; | |
1546 | } | |
1547 | ||
1548 | /* | |
1549 | * Policy is applied per-nve-group, so we need to iterate | |
1550 | * over the groups to add everything. | |
1551 | */ | |
1552 | for (ALL_LIST_ELEMENTS_RO(bgp->rfapi_cfg->nve_groups_sequential, rfgn, | |
1553 | rfg)) { | |
1554 | ||
1555 | /* | |
1556 | * contains policy management | |
1557 | */ | |
1558 | vnc_direct_bgp_add_group_afi(bgp, rfg, afi); | |
1559 | } | |
65efcfce LB |
1560 | } |
1561 | ||
1562 | ||
d62a17ae | 1563 | void vnc_direct_bgp_vpn_disable(struct bgp *bgp, afi_t afi) |
65efcfce | 1564 | { |
d62a17ae | 1565 | struct rfapi_import_table *it; |
1566 | uint8_t family = afi2family(afi); | |
65efcfce | 1567 | |
d62a17ae | 1568 | vnc_zlog_debug_verbose("%s: entry, afi=%d", __func__, afi); |
65efcfce | 1569 | |
d62a17ae | 1570 | if (!bgp) |
1571 | return; | |
65efcfce | 1572 | |
d62a17ae | 1573 | if (!bgp->rfapi) { |
1574 | vnc_zlog_debug_verbose("%s: rfapi not initialized", __func__); | |
1575 | return; | |
1576 | } | |
65efcfce | 1577 | |
d62a17ae | 1578 | if (!family || (afi != AFI_IP && afi != AFI_IP6)) { |
1579 | vnc_zlog_debug_verbose("%s: bad afi: %d", __func__, afi); | |
1580 | return; | |
1581 | } | |
65efcfce | 1582 | |
d62a17ae | 1583 | for (it = bgp->rfapi->imports; it; it = it->next) { |
65efcfce | 1584 | |
d62a17ae | 1585 | struct list *nve_list = NULL; |
65efcfce | 1586 | |
d62a17ae | 1587 | import_table_to_nve_list_direct_bgp(bgp, it, &nve_list, family); |
65efcfce | 1588 | |
d62a17ae | 1589 | if (nve_list) { |
1590 | vnc_direct_bgp_unexport_table( | |
1591 | afi, it->imported_vpn[afi], nve_list); | |
6a154c88 | 1592 | list_delete(&nve_list); |
d62a17ae | 1593 | } |
1594 | } | |
65efcfce LB |
1595 | } |
1596 | ||
1597 | ||
1598 | /*********************************************************************** | |
1599 | * Export methods that proxy nexthop END | |
1600 | ***********************************************************************/ | |
1601 | ||
1602 | ||
1603 | /*********************************************************************** | |
1604 | * Export methods that preserve original nexthop BEGIN | |
1605 | * rh = "registering nve" | |
1606 | ***********************************************************************/ | |
1607 | ||
1608 | ||
1609 | /* | |
1610 | * "Adding a Route" export process | |
40381db7 | 1611 | * TBD do we need to check bpi->type and bpi->sub_type here, or does |
65efcfce LB |
1612 | * caller do it? |
1613 | */ | |
d62a17ae | 1614 | void vnc_direct_bgp_rh_add_route(struct bgp *bgp, afi_t afi, |
5a1ae2c2 | 1615 | const struct prefix *prefix, struct peer *peer, |
d62a17ae | 1616 | struct attr *attr) |
65efcfce | 1617 | { |
d62a17ae | 1618 | struct vnc_export_info *eti; |
1619 | struct attr hattr; | |
1620 | struct rfapi_cfg *hc; | |
1621 | struct attr *iattr; | |
1622 | ||
1623 | if (!afi) { | |
1c50c1c0 QY |
1624 | flog_err(EC_LIB_DEVELOPMENT, "%s: can't get afi of route node", |
1625 | __func__); | |
d62a17ae | 1626 | return; |
1627 | } | |
1628 | ||
1629 | /* check bgp redist flag for vnc direct ("vpn") routes */ | |
1630 | if (!bgp->redist[afi][ZEBRA_ROUTE_VNC_DIRECT]) { | |
1631 | vnc_zlog_debug_verbose( | |
1632 | "%s: bgp redistribution of VNC direct routes is off", | |
1633 | __func__); | |
1634 | return; | |
1635 | } | |
1636 | ||
1637 | if (!(hc = bgp->rfapi_cfg)) { | |
1638 | vnc_zlog_debug_verbose("%s: bgp->rfapi_cfg is NULL, skipping", | |
1639 | __func__); | |
1640 | return; | |
1641 | } | |
1642 | ||
1643 | if (!VNC_EXPORT_BGP_RH_ENABLED(bgp->rfapi_cfg)) { | |
1644 | vnc_zlog_debug_verbose( | |
1645 | "%s: export-to-bgp RH mode not enabled, skipping", | |
1646 | __func__); | |
1647 | return; | |
1648 | } | |
1649 | ||
1650 | /* | |
1651 | * prefix list check | |
1652 | */ | |
1653 | if (hc->plist_export_bgp[afi]) { | |
1654 | if (prefix_list_apply(hc->plist_export_bgp[afi], prefix) | |
1655 | == PREFIX_DENY) | |
1656 | return; | |
1657 | } | |
1658 | ||
1659 | /* | |
1660 | * Construct new attribute set with NVE's VN addr as | |
1661 | * nexthop and without Tunnel Encap attr | |
1662 | */ | |
1663 | if (encap_attr_export(&hattr, attr, NULL, NULL)) | |
1664 | return; | |
1665 | if (hc->routemap_export_bgp) { | |
4b7e6066 | 1666 | struct bgp_path_info info; |
d62a17ae | 1667 | route_map_result_t ret; |
1668 | ||
1669 | memset(&info, 0, sizeof(info)); | |
1670 | info.peer = peer; | |
1671 | info.attr = &hattr; | |
1782514f | 1672 | ret = route_map_apply(hc->routemap_export_bgp, prefix, &info); |
d62a17ae | 1673 | if (ret == RMAP_DENYMATCH) { |
1674 | bgp_attr_flush(&hattr); | |
1675 | return; | |
1676 | } | |
1677 | } | |
1678 | ||
1679 | iattr = bgp_attr_intern(&hattr); | |
1680 | bgp_attr_flush(&hattr); | |
1681 | ||
1682 | /* | |
1683 | * record route information that we will need to expire | |
1684 | * this route | |
1685 | */ | |
1686 | eti = vnc_eti_get(bgp, EXPORT_TYPE_BGP, prefix, peer, | |
1687 | ZEBRA_ROUTE_VNC_DIRECT_RH, BGP_ROUTE_REDISTRIBUTE); | |
1688 | rfapiGetVncLifetime(attr, &eti->lifetime); | |
1689 | eti->lifetime = rfapiGetHolddownFromLifetime(eti->lifetime); | |
1690 | ||
b3d6bc6e MS |
1691 | /* |
1692 | * export expiration timer is already running on | |
1693 | * this route: cancel it | |
1694 | */ | |
c3aaa89a | 1695 | THREAD_OFF(eti->timer); |
65efcfce | 1696 | |
d62a17ae | 1697 | bgp_update(peer, prefix, /* prefix */ |
1698 | 0, /* addpath_id */ | |
1699 | iattr, /* bgp_update copies this attr */ | |
1700 | afi, SAFI_UNICAST, ZEBRA_ROUTE_VNC_DIRECT_RH, | |
1701 | BGP_ROUTE_REDISTRIBUTE, NULL, /* RD not used for unicast */ | |
996c9314 | 1702 | NULL, /* tag not used for unicast, EVPN neither */ |
317f1fe0 | 1703 | 0, 0, NULL); /* EVPN not used */ |
d62a17ae | 1704 | bgp_attr_unintern(&iattr); |
65efcfce LB |
1705 | } |
1706 | ||
cc9f21da | 1707 | static void vncExportWithdrawTimer(struct thread *t) |
65efcfce | 1708 | { |
c3aaa89a | 1709 | struct vnc_export_info *eti = THREAD_ARG(t); |
26a3ffd6 | 1710 | const struct prefix *p = agg_node_get_prefix(eti->node); |
d62a17ae | 1711 | |
1712 | /* | |
1713 | * withdraw the route | |
1714 | */ | |
26a3ffd6 | 1715 | bgp_withdraw(eti->peer, p, 0, /* addpath_id */ |
26a3ffd6 | 1716 | family2afi(p->family), SAFI_UNICAST, eti->type, |
d62a17ae | 1717 | eti->subtype, NULL, /* RD not used for unicast */ |
996c9314 LB |
1718 | NULL, 0, |
1719 | NULL); /* tag not used for unicast, EVPN neither */ | |
d62a17ae | 1720 | |
1721 | /* | |
1722 | * Free the eti | |
1723 | */ | |
1724 | vnc_eti_delete(eti); | |
65efcfce LB |
1725 | } |
1726 | ||
1727 | /* | |
1728 | * "Withdrawing a Route" export process | |
40381db7 | 1729 | * TBD do we need to check bpi->type and bpi->sub_type here, or does |
65efcfce LB |
1730 | * caller do it? |
1731 | */ | |
d62a17ae | 1732 | void vnc_direct_bgp_rh_del_route(struct bgp *bgp, afi_t afi, |
5a1ae2c2 | 1733 | const struct prefix *prefix, struct peer *peer) |
65efcfce | 1734 | { |
d62a17ae | 1735 | struct vnc_export_info *eti; |
1736 | ||
1737 | if (!afi) { | |
450971aa | 1738 | flog_err(EC_LIB_DEVELOPMENT, "%s: can't get afi route node", |
1c50c1c0 | 1739 | __func__); |
d62a17ae | 1740 | return; |
1741 | } | |
1742 | ||
1743 | /* check bgp redist flag for vnc direct ("vpn") routes */ | |
1744 | if (!bgp->redist[afi][ZEBRA_ROUTE_VNC_DIRECT]) { | |
1745 | vnc_zlog_debug_verbose( | |
1746 | "%s: bgp redistribution of VNC direct routes is off", | |
1747 | __func__); | |
1748 | return; | |
1749 | } | |
1750 | ||
1751 | if (!bgp->rfapi_cfg) { | |
1752 | vnc_zlog_debug_verbose("%s: bgp->rfapi_cfg is NULL, skipping", | |
1753 | __func__); | |
1754 | return; | |
1755 | } | |
1756 | if (!VNC_EXPORT_BGP_RH_ENABLED(bgp->rfapi_cfg)) { | |
1757 | vnc_zlog_debug_verbose( | |
1758 | "%s: export-to-bgp group mode not enabled, skipping", | |
1759 | __func__); | |
1760 | return; | |
1761 | } | |
1762 | ||
1763 | eti = vnc_eti_get(bgp, EXPORT_TYPE_BGP, prefix, peer, | |
1764 | ZEBRA_ROUTE_VNC_DIRECT_RH, BGP_ROUTE_REDISTRIBUTE); | |
1765 | ||
1766 | if (!eti->timer && eti->lifetime <= INT32_MAX) { | |
1767 | eti->timer = NULL; | |
1768 | thread_add_timer(bm->master, vncExportWithdrawTimer, eti, | |
1769 | eti->lifetime, &eti->timer); | |
1770 | vnc_zlog_debug_verbose( | |
1771 | "%s: set expiration timer for %u seconds", __func__, | |
1772 | eti->lifetime); | |
1773 | } | |
65efcfce LB |
1774 | } |
1775 | ||
1776 | ||
d62a17ae | 1777 | void vnc_direct_bgp_rh_vpn_enable(struct bgp *bgp, afi_t afi) |
65efcfce | 1778 | { |
d62a17ae | 1779 | struct prefix_rd prd; |
9bcb3eef | 1780 | struct bgp_dest *pdest; |
d62a17ae | 1781 | struct rfapi_cfg *hc; |
1782 | ||
1783 | vnc_zlog_debug_verbose("%s: entry, afi=%d", __func__, afi); | |
1784 | ||
1785 | if (!bgp) | |
1786 | return; | |
1787 | ||
1788 | if (!(hc = bgp->rfapi_cfg)) | |
1789 | return; | |
1790 | ||
1791 | if (!VNC_EXPORT_BGP_RH_ENABLED(bgp->rfapi_cfg)) { | |
1792 | vnc_zlog_debug_verbose( | |
1793 | "%s: export of RH routes not enabled, skipping", | |
1794 | __func__); | |
1795 | return; | |
1796 | } | |
1797 | ||
1798 | if (afi != AFI_IP && afi != AFI_IP6) { | |
1799 | vnc_zlog_debug_verbose("%s: bad afi: %d", __func__, afi); | |
1800 | return; | |
1801 | } | |
1802 | ||
1803 | /* | |
1804 | * Go through the entire BGP VPN table and export to BGP unicast. | |
1805 | */ | |
1806 | ||
1807 | vnc_zlog_debug_verbose("%s: starting RD loop", __func__); | |
1808 | ||
1809 | /* Loop over all the RDs */ | |
9bcb3eef DS |
1810 | for (pdest = bgp_table_top(bgp->rib[afi][SAFI_MPLS_VPN]); pdest; |
1811 | pdest = bgp_route_next(pdest)) { | |
d62a17ae | 1812 | |
1813 | struct bgp_table *table; | |
9bcb3eef | 1814 | struct bgp_dest *dest; |
4b7e6066 | 1815 | struct bgp_path_info *ri; |
9bcb3eef | 1816 | const struct prefix *pdest_p = bgp_dest_get_prefix(pdest); |
d62a17ae | 1817 | |
1818 | memset(&prd, 0, sizeof(prd)); | |
1819 | prd.family = AF_UNSPEC; | |
1820 | prd.prefixlen = 64; | |
9bcb3eef | 1821 | memcpy(prd.val, pdest_p->u.val, 8); |
d62a17ae | 1822 | |
1823 | /* This is the per-RD table of prefixes */ | |
9bcb3eef | 1824 | table = bgp_dest_get_bgp_table_info(pdest); |
d62a17ae | 1825 | |
d477c01d LB |
1826 | if (!table) |
1827 | continue; | |
1828 | ||
9bcb3eef DS |
1829 | for (dest = bgp_table_top(table); dest; |
1830 | dest = bgp_route_next(dest)) { | |
1831 | const struct prefix *dest_p; | |
d62a17ae | 1832 | |
1833 | /* | |
1834 | * skip prefix list check if no routes here | |
1835 | */ | |
9bcb3eef | 1836 | if (!bgp_dest_has_bgp_path_info_data(dest)) |
d62a17ae | 1837 | continue; |
1838 | ||
56ca3b5b | 1839 | vnc_zlog_debug_verbose("%s: checking prefix %pBD", |
9bcb3eef | 1840 | __func__, dest); |
d62a17ae | 1841 | |
9bcb3eef | 1842 | dest_p = bgp_dest_get_prefix(dest); |
d62a17ae | 1843 | |
1844 | /* | |
1845 | * prefix list check | |
1846 | */ | |
1847 | if (hc->plist_export_bgp[afi]) { | |
1848 | if (prefix_list_apply(hc->plist_export_bgp[afi], | |
9bcb3eef | 1849 | dest_p) |
d62a17ae | 1850 | == PREFIX_DENY) { |
1851 | ||
1852 | vnc_zlog_debug_verbose( | |
1853 | "%s: prefix list says DENY", | |
1854 | __func__); | |
1855 | continue; | |
1856 | } | |
1857 | } | |
1858 | ||
9bcb3eef DS |
1859 | for (ri = bgp_dest_get_bgp_path_info(dest); ri; |
1860 | ri = ri->next) { | |
d62a17ae | 1861 | |
1862 | vnc_zlog_debug_verbose("%s: ri->sub_type: %d", | |
1863 | __func__, ri->sub_type); | |
1864 | ||
1865 | if (ri->sub_type == BGP_ROUTE_NORMAL | |
1866 | || ri->sub_type == BGP_ROUTE_RFP) { | |
1867 | ||
1868 | struct vnc_export_info *eti; | |
1869 | struct attr hattr; | |
1870 | struct attr *iattr; | |
1871 | ||
1872 | /* | |
1873 | * Construct new attribute set with | |
1874 | * NVE's VN addr as | |
1875 | * nexthop and without Tunnel Encap attr | |
1876 | */ | |
1877 | if (encap_attr_export(&hattr, ri->attr, | |
1878 | NULL, NULL)) { | |
1879 | vnc_zlog_debug_verbose( | |
1880 | "%s: encap_attr_export failed", | |
1881 | __func__); | |
1882 | continue; | |
1883 | } | |
1884 | ||
1885 | if (hc->routemap_export_bgp) { | |
4b7e6066 | 1886 | struct bgp_path_info info; |
d62a17ae | 1887 | route_map_result_t ret; |
1888 | ||
1889 | memset(&info, 0, sizeof(info)); | |
1890 | info.peer = ri->peer; | |
1891 | info.attr = &hattr; | |
1892 | ret = route_map_apply( | |
1893 | hc->routemap_export_bgp, | |
1782514f | 1894 | dest_p, &info); |
d62a17ae | 1895 | if (ret == RMAP_DENYMATCH) { |
1896 | bgp_attr_flush(&hattr); | |
1897 | vnc_zlog_debug_verbose( | |
1898 | "%s: route map says DENY", | |
1899 | __func__); | |
1900 | continue; | |
1901 | } | |
1902 | } | |
1903 | ||
1904 | iattr = bgp_attr_intern(&hattr); | |
1905 | bgp_attr_flush(&hattr); | |
1906 | ||
1907 | /* | |
1908 | * record route information that we will | |
1909 | * need to expire | |
1910 | * this route | |
1911 | */ | |
1912 | eti = vnc_eti_get( | |
9bcb3eef | 1913 | bgp, EXPORT_TYPE_BGP, dest_p, |
d62a17ae | 1914 | ri->peer, |
1915 | ZEBRA_ROUTE_VNC_DIRECT_RH, | |
1916 | BGP_ROUTE_REDISTRIBUTE); | |
1917 | rfapiGetVncLifetime(ri->attr, | |
1918 | &eti->lifetime); | |
1919 | ||
b3d6bc6e MS |
1920 | /* |
1921 | * export expiration timer is | |
1922 | * already running on | |
1923 | * this route: cancel it | |
1924 | */ | |
c3aaa89a | 1925 | THREAD_OFF(eti->timer); |
d62a17ae | 1926 | |
1927 | vnc_zlog_debug_verbose( | |
1928 | "%s: calling bgp_update", | |
1929 | __func__); | |
1930 | ||
9bcb3eef DS |
1931 | bgp_update( |
1932 | ri->peer, dest_p, /* prefix */ | |
1933 | 0, /* addpath_id */ | |
1934 | iattr, /* bgp_update copies | |
1935 | it */ | |
1936 | AFI_IP, SAFI_UNICAST, | |
1937 | ZEBRA_ROUTE_VNC_DIRECT_RH, | |
1938 | BGP_ROUTE_REDISTRIBUTE, NULL, | |
1939 | /* RD not used for unicast */ | |
1940 | NULL, | |
1941 | /* tag not used for unicast, | |
1942 | or EVPN */ | |
1943 | 0, 0, NULL); /* EVPN not used */ | |
3380418f | 1944 | |
d62a17ae | 1945 | bgp_attr_unintern(&iattr); |
1946 | } | |
1947 | } | |
1948 | } | |
1949 | } | |
65efcfce LB |
1950 | } |
1951 | ||
d62a17ae | 1952 | void vnc_direct_bgp_rh_vpn_disable(struct bgp *bgp, afi_t afi) |
65efcfce | 1953 | { |
9bcb3eef | 1954 | struct bgp_dest *dest; |
d62a17ae | 1955 | |
1956 | vnc_zlog_debug_verbose("%s: entry, afi=%d", __func__, afi); | |
1957 | ||
1958 | if (!bgp) | |
1959 | return; | |
1960 | ||
1961 | if (afi != AFI_IP && afi != AFI_IP6) { | |
1962 | vnc_zlog_debug_verbose("%s: bad afi: %d", __func__, afi); | |
1963 | return; | |
1964 | } | |
1965 | ||
1966 | /* | |
1967 | * Go through the entire BGP unicast table and remove routes that | |
1968 | * originated from us | |
1969 | */ | |
9bcb3eef DS |
1970 | for (dest = bgp_table_top(bgp->rib[afi][SAFI_UNICAST]); dest; |
1971 | dest = bgp_route_next(dest)) { | |
1972 | const struct prefix *dest_p = bgp_dest_get_prefix(dest); | |
4b7e6066 DS |
1973 | struct bgp_path_info *ri; |
1974 | struct bgp_path_info *next; | |
d62a17ae | 1975 | |
9bcb3eef DS |
1976 | for (ri = bgp_dest_get_bgp_path_info(dest), next = NULL; ri; |
1977 | ri = next) { | |
d62a17ae | 1978 | |
1979 | next = ri->next; | |
1980 | ||
1981 | if (ri->type == ZEBRA_ROUTE_VNC_DIRECT_RH | |
1982 | && ri->sub_type == BGP_ROUTE_REDISTRIBUTE) { | |
1983 | ||
1984 | struct vnc_export_info *eti; | |
1985 | ||
1986 | /* | |
1987 | * Delete routes immediately (no timer) | |
1988 | */ | |
1989 | eti = vnc_eti_checktimer( | |
9bcb3eef | 1990 | bgp, EXPORT_TYPE_BGP, dest_p, ri->peer, |
d62a17ae | 1991 | ZEBRA_ROUTE_VNC_DIRECT_RH, |
1992 | BGP_ROUTE_REDISTRIBUTE); | |
1993 | if (eti) { | |
c3aaa89a | 1994 | THREAD_OFF(eti->timer); |
d62a17ae | 1995 | vnc_eti_delete(eti); |
1996 | } | |
1997 | ||
9bcb3eef DS |
1998 | bgp_withdraw(ri->peer, dest_p, /* prefix */ |
1999 | 0, /* addpath_id */ | |
d62a17ae | 2000 | AFI_IP, SAFI_UNICAST, |
2001 | ZEBRA_ROUTE_VNC_DIRECT_RH, | |
2002 | BGP_ROUTE_REDISTRIBUTE, | |
2003 | NULL, /* RD not used for unicast */ | |
317f1fe0 | 2004 | NULL, 0, NULL); /* tag not used for |
d62a17ae | 2005 | unicast, EVPN |
2006 | neither */ | |
2007 | } | |
2008 | } | |
2009 | } | |
65efcfce LB |
2010 | } |
2011 | ||
d62a17ae | 2012 | void vnc_direct_bgp_rh_reexport(struct bgp *bgp, afi_t afi) |
65efcfce | 2013 | { |
d62a17ae | 2014 | if (VNC_EXPORT_BGP_RH_ENABLED(bgp->rfapi_cfg)) { |
2015 | vnc_direct_bgp_rh_vpn_disable(bgp, afi); | |
2016 | vnc_direct_bgp_rh_vpn_enable(bgp, afi); | |
2017 | } | |
65efcfce LB |
2018 | } |
2019 | ||
2020 | /*********************************************************************** | |
2021 | * Generic Export methods | |
2022 | ***********************************************************************/ | |
2023 | ||
2024 | /* | |
2025 | * Assumes the correct mode bits are already turned on. Thus it | |
2026 | * is OK to call this function from, e.g., bgp_redistribute_set() | |
2027 | * without caring if export is enabled or not | |
2028 | */ | |
d62a17ae | 2029 | void vnc_export_bgp_enable(struct bgp *bgp, afi_t afi) |
65efcfce | 2030 | { |
b8e031e5 PZ |
2031 | if (!bgp->rfapi_cfg) |
2032 | return; | |
2033 | ||
d62a17ae | 2034 | switch (bgp->rfapi_cfg->flags & BGP_VNC_CONFIG_EXPORT_BGP_MODE_BITS) { |
2035 | case BGP_VNC_CONFIG_EXPORT_BGP_MODE_NONE: | |
2036 | break; | |
2037 | ||
2038 | case BGP_VNC_CONFIG_EXPORT_BGP_MODE_GRP: | |
2039 | vnc_direct_bgp_vpn_enable(bgp, afi); | |
2040 | break; | |
2041 | ||
2042 | case BGP_VNC_CONFIG_EXPORT_BGP_MODE_RH: | |
2043 | vnc_direct_bgp_rh_vpn_enable(bgp, afi); | |
2044 | break; | |
2045 | ||
2046 | case BGP_VNC_CONFIG_EXPORT_BGP_MODE_CE: | |
2047 | vnc_direct_bgp_vpn_enable_ce(bgp, afi); | |
2048 | break; | |
2049 | } | |
65efcfce LB |
2050 | } |
2051 | ||
d62a17ae | 2052 | void vnc_export_bgp_disable(struct bgp *bgp, afi_t afi) |
65efcfce | 2053 | { |
b8e031e5 PZ |
2054 | if (!bgp->rfapi_cfg) |
2055 | return; | |
2056 | ||
d62a17ae | 2057 | switch (bgp->rfapi_cfg->flags & BGP_VNC_CONFIG_EXPORT_BGP_MODE_BITS) { |
2058 | case BGP_VNC_CONFIG_EXPORT_BGP_MODE_NONE: | |
2059 | break; | |
2060 | ||
2061 | case BGP_VNC_CONFIG_EXPORT_BGP_MODE_GRP: | |
2062 | vnc_direct_bgp_vpn_disable(bgp, afi); | |
2063 | break; | |
2064 | ||
2065 | case BGP_VNC_CONFIG_EXPORT_BGP_MODE_RH: | |
2066 | vnc_direct_bgp_rh_vpn_disable(bgp, afi); | |
2067 | break; | |
2068 | ||
2069 | case BGP_VNC_CONFIG_EXPORT_BGP_MODE_CE: | |
2070 | vnc_direct_bgp_vpn_disable_ce(bgp, afi); | |
2071 | break; | |
2072 | } | |
65efcfce LB |
2073 | } |
2074 | ||
d62a17ae | 2075 | void vnc_export_bgp_prechange(struct bgp *bgp) |
65efcfce | 2076 | { |
d62a17ae | 2077 | vnc_export_bgp_disable(bgp, AFI_IP); |
2078 | vnc_export_bgp_disable(bgp, AFI_IP6); | |
65efcfce LB |
2079 | } |
2080 | ||
d62a17ae | 2081 | void vnc_export_bgp_postchange(struct bgp *bgp) |
65efcfce | 2082 | { |
d62a17ae | 2083 | vnc_export_bgp_enable(bgp, AFI_IP); |
2084 | vnc_export_bgp_enable(bgp, AFI_IP6); | |
65efcfce LB |
2085 | } |
2086 | ||
d62a17ae | 2087 | void vnc_direct_bgp_reexport(struct bgp *bgp, afi_t afi) |
65efcfce | 2088 | { |
d62a17ae | 2089 | vnc_export_bgp_disable(bgp, afi); |
2090 | vnc_export_bgp_enable(bgp, afi); | |
65efcfce | 2091 | } |