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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_import_bgp.c | |
23 | * Purpose: Import routes from BGP unicast directly (not via zebra) | |
24 | */ | |
25 | ||
f8b6f499 LB |
26 | #include "lib/zebra.h" |
27 | #include "lib/prefix.h" | |
fe08ba7e | 28 | #include "lib/agg_table.h" |
f8b6f499 LB |
29 | #include "lib/vty.h" |
30 | #include "lib/log.h" | |
31 | #include "lib/memory.h" | |
32 | #include "lib/linklist.h" | |
33 | #include "lib/plist.h" | |
34 | #include "lib/routemap.h" | |
02705213 | 35 | #include "lib/lib_errors.h" |
65efcfce | 36 | |
f8b6f499 LB |
37 | #include "bgpd/bgpd.h" |
38 | #include "bgpd/bgp_ecommunity.h" | |
39 | #include "bgpd/bgp_attr.h" | |
b2f0fa55 | 40 | #include "bgpd/bgp_route.h" |
d62a17ae | 41 | #include "bgpd/bgp_mplsvpn.h" /* for RD_TYPE_IP */ |
65efcfce | 42 | |
f8b6f499 LB |
43 | #include "bgpd/rfapi/vnc_export_bgp.h" |
44 | #include "bgpd/rfapi/bgp_rfapi_cfg.h" | |
45 | #include "bgpd/rfapi/rfapi.h" | |
46 | #include "bgpd/rfapi/rfapi_import.h" | |
47 | #include "bgpd/rfapi/rfapi_private.h" | |
48 | #include "bgpd/rfapi/rfapi_monitor.h" | |
49 | #include "bgpd/rfapi/rfapi_vty.h" | |
50 | #include "bgpd/rfapi/vnc_import_bgp.h" | |
51 | #include "bgpd/rfapi/vnc_import_bgp_p.h" | |
52 | #include "bgpd/rfapi/vnc_debug.h" | |
65efcfce LB |
53 | |
54 | #define ENABLE_VNC_RHNCK | |
55 | ||
56 | #define DEBUG_RHN_LIST 0 | |
57 | ||
58 | static struct rfapi_descriptor vncHDBgpDirect; /* dummy nve descriptor */ | |
59 | static struct rfapi_descriptor vncHDResolveNve; /* dummy nve descriptor */ | |
60 | ||
61 | /* | |
62 | * For routes from another AS: | |
63 | * | |
64 | * If MED is set, | |
65 | * LOCAL_PREF = 255 - MIN(255, MED) | |
66 | * else | |
67 | * LOCAL_PREF = default_local_pref | |
68 | * | |
69 | * For routes from the same AS: | |
70 | * | |
71 | * LOCAL_PREF unchanged | |
72 | */ | |
d62a17ae | 73 | uint32_t calc_local_pref(struct attr *attr, struct peer *peer) |
65efcfce | 74 | { |
d62a17ae | 75 | uint32_t local_pref = 0; |
76 | ||
77 | if (!attr) { | |
78 | if (peer) { | |
79 | return peer->bgp->default_local_pref; | |
80 | } | |
81 | return bgp_get_default()->default_local_pref; | |
82 | } | |
83 | ||
84 | if (peer && (peer->as != peer->bgp->as)) { | |
85 | if (attr->flag & ATTR_FLAG_BIT(BGP_ATTR_MULTI_EXIT_DISC)) { | |
86 | if (attr->med > 255) { | |
87 | local_pref = 0; | |
88 | } else { | |
89 | local_pref = 255 - attr->med; | |
90 | } | |
91 | } else { | |
92 | local_pref = peer->bgp->default_local_pref; | |
93 | } | |
94 | } else { | |
95 | if (attr->flag & ATTR_FLAG_BIT(BGP_ATTR_LOCAL_PREF)) { | |
96 | local_pref = attr->local_pref; | |
97 | } else { | |
98 | if (peer && peer->bgp) { | |
99 | local_pref = peer->bgp->default_local_pref; | |
100 | } | |
101 | } | |
102 | } | |
103 | ||
104 | return local_pref; | |
65efcfce LB |
105 | } |
106 | ||
d62a17ae | 107 | static int is_host_prefix(struct prefix *p) |
65efcfce | 108 | { |
d62a17ae | 109 | switch (p->family) { |
110 | case AF_INET: | |
111 | return (p->prefixlen == 32); | |
112 | case AF_INET6: | |
113 | return (p->prefixlen == 128); | |
114 | } | |
115 | return 0; | |
65efcfce LB |
116 | } |
117 | ||
118 | /*********************************************************************** | |
119 | * RHN list | |
120 | ***********************************************************************/ | |
121 | ||
d62a17ae | 122 | struct prefix_bag { |
123 | struct prefix hpfx; /* ce address = unicast nexthop */ | |
124 | struct prefix upfx; /* unicast prefix */ | |
40381db7 | 125 | struct bgp_path_info *ubpi; /* unicast route */ |
65efcfce LB |
126 | }; |
127 | ||
d7c0a89a QY |
128 | static const uint8_t maskbit[] = {0x00, 0x80, 0xc0, 0xe0, 0xf0, |
129 | 0xf8, 0xfc, 0xfe, 0xff}; | |
65efcfce | 130 | |
d62a17ae | 131 | int vnc_prefix_cmp(void *pfx1, void *pfx2) |
65efcfce | 132 | { |
d62a17ae | 133 | int offset; |
134 | int shift; | |
d7c0a89a | 135 | uint8_t mask; |
d62a17ae | 136 | |
137 | struct prefix *p1 = pfx1; | |
138 | struct prefix *p2 = pfx2; | |
139 | ||
140 | if (p1->family < p2->family) | |
141 | return -1; | |
142 | if (p1->family > p2->family) | |
143 | return 1; | |
144 | ||
145 | if (p1->prefixlen < p2->prefixlen) | |
146 | return -1; | |
147 | if (p1->prefixlen > p2->prefixlen) | |
148 | return 1; | |
149 | ||
150 | offset = p1->prefixlen / 8; | |
151 | shift = p1->prefixlen % 8; | |
152 | if (shift == 0 && offset) { /* catch aligned case */ | |
153 | offset--; | |
154 | shift = 8; | |
155 | } | |
156 | ||
157 | /* Set both prefix's head pointer. */ | |
d7c0a89a QY |
158 | const uint8_t *pp1 = (const uint8_t *)&p1->u.prefix; |
159 | const uint8_t *pp2 = (const uint8_t *)&p2->u.prefix; | |
d62a17ae | 160 | |
161 | while (offset--) { | |
162 | if (*pp1 < *pp2) | |
163 | return -1; | |
164 | if (*pp1 > *pp2) | |
165 | return 1; | |
166 | ++pp1; | |
167 | ++pp2; | |
168 | } | |
169 | ||
170 | mask = maskbit[shift]; | |
171 | if ((*pp1 & mask) < (*pp2 & mask)) | |
172 | return -1; | |
173 | if ((*pp1 & mask) > (*pp2 & mask)) | |
174 | return 1; | |
175 | ||
176 | return 0; | |
65efcfce LB |
177 | } |
178 | ||
d62a17ae | 179 | static void prefix_bag_free(void *pb) |
65efcfce | 180 | { |
d62a17ae | 181 | XFREE(MTYPE_RFAPI_PREFIX_BAG, pb); |
65efcfce LB |
182 | } |
183 | ||
184 | #if DEBUG_RHN_LIST | |
d62a17ae | 185 | static void print_rhn_list(const char *tag1, const char *tag2) |
65efcfce | 186 | { |
d62a17ae | 187 | struct bgp *bgp; |
188 | struct skiplist *sl; | |
189 | struct skiplistnode *p; | |
190 | struct prefix_bag *pb; | |
191 | int count = 0; | |
192 | ||
193 | bgp = bgp_get_default(); | |
194 | if (!bgp) | |
195 | return; | |
196 | ||
197 | sl = bgp->frapi->resolve_nve_nexthop; | |
198 | if (!sl) { | |
199 | vnc_zlog_debug_verbose("%s: %s: RHN List is empty", | |
200 | (tag1 ? tag1 : ""), (tag2 ? tag2 : "")); | |
201 | return; | |
202 | } | |
203 | ||
204 | vnc_zlog_debug_verbose("%s: %s: RHN list:", (tag1 ? tag1 : ""), | |
205 | (tag2 ? tag2 : "")); | |
206 | ||
207 | /* XXX uses secret knowledge of skiplist structure */ | |
208 | for (p = sl->header->forward[0]; p; p = p->forward[0]) { | |
872ed4c7 DS |
209 | char kbuf[PREFIX_STRLEN]; |
210 | char hbuf[PREFIX_STRLEN]; | |
211 | char ubuf[PREFIX_STRLEN]; | |
d62a17ae | 212 | |
213 | pb = p->value; | |
214 | ||
872ed4c7 DS |
215 | prefix2str(p->key, kbuf, sizeof(kbuf)); |
216 | prefix2str(&pb->hpfx, hbuf, sizeof(hbuf)); | |
217 | prefix2str(&pb->upfx, ubuf, sizeof(ubuf)); | |
d62a17ae | 218 | |
219 | vnc_zlog_debug_verbose( | |
40381db7 DS |
220 | "RHN Entry %d (q=%p): kpfx=%s, upfx=%s, hpfx=%s, ubpi=%p", |
221 | ++count, p, kbuf, ubuf, hbuf, pb->ubpi); | |
d62a17ae | 222 | } |
65efcfce LB |
223 | } |
224 | #endif | |
225 | ||
226 | #ifdef ENABLE_VNC_RHNCK | |
d62a17ae | 227 | static void vnc_rhnck(char *tag) |
65efcfce | 228 | { |
d62a17ae | 229 | struct bgp *bgp; |
230 | struct skiplist *sl; | |
231 | struct skiplistnode *p; | |
232 | ||
233 | bgp = bgp_get_default(); | |
234 | if (!bgp) | |
235 | return; | |
236 | sl = bgp->rfapi->resolve_nve_nexthop; | |
237 | ||
238 | if (!sl) | |
239 | return; | |
240 | ||
241 | /* XXX uses secret knowledge of skiplist structure */ | |
242 | for (p = sl->header->forward[0]; p; p = p->forward[0]) { | |
243 | struct prefix_bag *pb; | |
244 | struct prefix *pkey; | |
245 | afi_t afi; | |
246 | struct prefix pfx_orig_nexthop; | |
247 | ||
248 | memset(&pfx_orig_nexthop, 0, | |
249 | sizeof(struct prefix)); /* keep valgrind happy */ | |
250 | ||
251 | pkey = p->key; | |
252 | pb = p->value; | |
253 | ||
254 | afi = family2afi(pb->upfx.family); | |
255 | ||
40381db7 | 256 | rfapiUnicastNexthop2Prefix(afi, pb->ubpi->attr, |
d62a17ae | 257 | &pfx_orig_nexthop); |
258 | ||
40381db7 | 259 | /* pb->hpfx, pb->ubpi nexthop, pkey should all reflect the same |
d62a17ae | 260 | * pfx */ |
261 | assert(!vnc_prefix_cmp(&pb->hpfx, pkey)); | |
262 | if (vnc_prefix_cmp(&pb->hpfx, &pfx_orig_nexthop)) { | |
872ed4c7 DS |
263 | char str_onh[PREFIX_STRLEN]; |
264 | char str_nve_pfx[PREFIX_STRLEN]; | |
d62a17ae | 265 | |
872ed4c7 DS |
266 | prefix2str(&pfx_orig_nexthop, str_onh, sizeof(str_onh)); |
267 | prefix2str(&pb->hpfx, str_nve_pfx, sizeof(str_nve_pfx)); | |
d62a17ae | 268 | |
269 | vnc_zlog_debug_verbose( | |
40381db7 | 270 | "%s: %s: FATAL: resolve_nve_nexthop list item bpi nexthop %s != nve pfx %s", |
d62a17ae | 271 | __func__, tag, str_onh, str_nve_pfx); |
272 | assert(0); | |
273 | } | |
274 | } | |
275 | vnc_zlog_debug_verbose("%s: vnc_rhnck OK", tag); | |
65efcfce LB |
276 | } |
277 | ||
278 | #define VNC_RHNCK(n) do {char buf[BUFSIZ];sprintf(buf,"%s: %s", __func__, #n);vnc_rhnck(buf);} while (0) | |
279 | ||
280 | #else | |
281 | ||
282 | #define VNC_RHNCK(n) | |
283 | ||
284 | #endif | |
285 | ||
286 | /*********************************************************************** | |
287 | * Add/Delete Unicast Route | |
288 | ***********************************************************************/ | |
289 | ||
290 | /* | |
291 | * "Adding a Route" import process | |
292 | */ | |
293 | ||
294 | /* | |
295 | * extract and package information from the BGP unicast route. | |
296 | * Return code 0 means OK, non-0 means drop. | |
297 | * | |
298 | * If return code is 0, caller MUST release ecom | |
299 | */ | |
d62a17ae | 300 | static int process_unicast_route(struct bgp *bgp, /* in */ |
301 | afi_t afi, /* in */ | |
302 | struct prefix *prefix, /* in */ | |
4b7e6066 | 303 | struct bgp_path_info *info, /* in */ |
d62a17ae | 304 | struct ecommunity **ecom, /* OUT */ |
305 | struct prefix *unicast_nexthop) /* OUT */ | |
65efcfce | 306 | { |
d62a17ae | 307 | struct rfapi_cfg *hc = bgp->rfapi_cfg; |
308 | struct peer *peer = info->peer; | |
309 | struct attr *attr = info->attr; | |
310 | struct attr hattr; | |
311 | struct route_map *rmap = NULL; | |
312 | struct prefix pfx_orig_nexthop; | |
313 | ||
314 | memset(&pfx_orig_nexthop, 0, | |
315 | sizeof(struct prefix)); /* keep valgrind happy */ | |
316 | ||
317 | /* | |
318 | * prefix list check | |
319 | */ | |
320 | if (hc->plist_redist[ZEBRA_ROUTE_BGP_DIRECT][afi]) { | |
321 | vnc_zlog_debug_verbose("%s: HC prefix list is set, checking", | |
322 | __func__); | |
323 | if (prefix_list_apply( | |
324 | hc->plist_redist[ZEBRA_ROUTE_BGP_DIRECT][afi], | |
325 | prefix) | |
326 | == PREFIX_DENY) { | |
327 | vnc_zlog_debug_verbose( | |
328 | "%s: prefix list returns DENY, blocking route", | |
329 | __func__); | |
330 | return -1; | |
331 | } | |
332 | vnc_zlog_debug_verbose( | |
333 | "%s: prefix list returns PASS, allowing route", | |
334 | __func__); | |
335 | } | |
336 | ||
337 | /* apply routemap, if any, later */ | |
338 | rmap = hc->routemap_redist[ZEBRA_ROUTE_BGP_DIRECT]; | |
339 | ||
340 | /* | |
341 | * Extract original nexthop, which we expect to be a NVE connected | |
342 | * router | |
343 | * Note that this is the nexthop before any possible application of | |
344 | * policy | |
345 | */ | |
346 | /* | |
347 | * Incoming prefix is unicast. If v6, it is in multiprotocol area, | |
348 | * but if v4 it is in attr->nexthop | |
349 | */ | |
350 | rfapiUnicastNexthop2Prefix(afi, attr, &pfx_orig_nexthop); | |
351 | ||
352 | /* | |
353 | * route map handling | |
354 | * This code is here because it allocates an interned attr which | |
355 | * must be freed before we return. It's easier to put it after | |
356 | * all of the possible returns above. | |
357 | */ | |
358 | memset(&hattr, 0, sizeof(struct attr)); | |
359 | bgp_attr_dup(&hattr, attr); /* hattr becomes a ghost attr */ | |
360 | ||
361 | if (rmap) { | |
4b7e6066 | 362 | struct bgp_path_info info; |
d62a17ae | 363 | route_map_result_t ret; |
364 | ||
365 | memset(&info, 0, sizeof(info)); | |
366 | info.peer = peer; | |
367 | info.attr = &hattr; | |
368 | ret = route_map_apply(rmap, prefix, RMAP_BGP, &info); | |
369 | if (ret == RMAP_DENYMATCH) { | |
370 | bgp_attr_flush(&hattr); | |
371 | vnc_zlog_debug_verbose( | |
372 | "%s: route map \"%s\" says DENY, returning", | |
373 | __func__, rmap->name); | |
374 | return -1; | |
375 | } | |
376 | } | |
377 | ||
378 | /* | |
379 | * Get the (possibly altered by policy) unicast nexthop | |
380 | * for later lookup in the Import Table by caller | |
381 | */ | |
382 | rfapiUnicastNexthop2Prefix(afi, &hattr, unicast_nexthop); | |
383 | ||
384 | if (hattr.ecommunity) | |
385 | *ecom = ecommunity_dup(hattr.ecommunity); | |
386 | else | |
387 | *ecom = ecommunity_new(); | |
388 | ||
389 | /* | |
390 | * Done with hattr, clean up | |
391 | */ | |
392 | bgp_attr_flush(&hattr); | |
393 | ||
394 | /* | |
395 | * Add EC that carries original NH of iBGP route (2 bytes = magic | |
396 | * value indicating it came from an VNC gateway; default 5226, but | |
397 | * must be user configurable). Note that this is the nexthop before | |
398 | * any application of policy. | |
399 | */ | |
400 | { | |
401 | struct ecommunity_val vnc_gateway_magic; | |
402 | uint16_t localadmin; | |
403 | ||
404 | /* Using route origin extended community type */ | |
405 | memset(&vnc_gateway_magic, 0, sizeof(vnc_gateway_magic)); | |
406 | vnc_gateway_magic.val[0] = 0x01; | |
407 | vnc_gateway_magic.val[1] = 0x03; | |
408 | ||
409 | /* Only works for IPv4 nexthops */ | |
410 | if (prefix->family == AF_INET) { | |
411 | memcpy(vnc_gateway_magic.val + 2, | |
412 | &unicast_nexthop->u.prefix4, 4); | |
413 | } | |
414 | localadmin = htons(hc->resolve_nve_roo_local_admin); | |
415 | memcpy(vnc_gateway_magic.val + 6, (char *)&localadmin, 2); | |
416 | ||
417 | ecommunity_add_val(*ecom, &vnc_gateway_magic); | |
418 | } | |
419 | ||
420 | return 0; | |
65efcfce LB |
421 | } |
422 | ||
423 | ||
d62a17ae | 424 | static void vnc_import_bgp_add_route_mode_resolve_nve_one_bi( |
40381db7 DS |
425 | struct bgp *bgp, afi_t afi, struct bgp_path_info *bpi, /* VPN bpi */ |
426 | struct prefix_rd *prd, /* RD */ | |
d62a17ae | 427 | struct prefix *prefix, /* unicast route prefix */ |
428 | uint32_t *local_pref, /* NULL = no local_pref */ | |
429 | uint32_t *med, /* NULL = no med */ | |
430 | struct ecommunity *ecom) /* generated ecoms */ | |
65efcfce | 431 | { |
d62a17ae | 432 | struct prefix un; |
433 | struct prefix nexthop; | |
434 | struct rfapi_ip_addr nexthop_h; | |
435 | uint32_t lifetime; | |
436 | uint32_t *plifetime; | |
437 | struct bgp_attr_encap_subtlv *encaptlvs; | |
438 | uint32_t label = 0; | |
439 | ||
440 | struct rfapi_un_option optary[3]; | |
441 | struct rfapi_un_option *opt = NULL; | |
442 | int cur_opt = 0; | |
65efcfce | 443 | |
d62a17ae | 444 | vnc_zlog_debug_verbose("%s: entry", __func__); |
445 | ||
40381db7 DS |
446 | if (bpi->type != ZEBRA_ROUTE_BGP |
447 | && bpi->type != ZEBRA_ROUTE_BGP_DIRECT) { | |
d62a17ae | 448 | |
449 | return; | |
450 | } | |
40381db7 DS |
451 | if (bpi->sub_type != BGP_ROUTE_NORMAL |
452 | && bpi->sub_type != BGP_ROUTE_STATIC | |
453 | && bpi->sub_type != BGP_ROUTE_RFP) { | |
d62a17ae | 454 | |
455 | return; | |
456 | } | |
40381db7 | 457 | if (CHECK_FLAG(bpi->flags, BGP_PATH_REMOVED)) |
d62a17ae | 458 | return; |
459 | ||
40381db7 DS |
460 | vncHDResolveNve.peer = bpi->peer; |
461 | if (!rfapiGetVncTunnelUnAddr(bpi->attr, &un)) { | |
d62a17ae | 462 | if (rfapiQprefix2Raddr(&un, &vncHDResolveNve.un_addr)) |
463 | return; | |
464 | } else { | |
465 | memset(&vncHDResolveNve.un_addr, 0, | |
466 | sizeof(vncHDResolveNve.un_addr)); | |
467 | } | |
468 | ||
469 | /* Use nexthop of VPN route as nexthop of constructed route */ | |
40381db7 | 470 | rfapiNexthop2Prefix(bpi->attr, &nexthop); |
d62a17ae | 471 | rfapiQprefix2Raddr(&nexthop, &nexthop_h); |
472 | ||
40381db7 | 473 | if (rfapiGetVncLifetime(bpi->attr, &lifetime)) { |
d62a17ae | 474 | plifetime = NULL; |
475 | } else { | |
476 | plifetime = &lifetime; | |
477 | } | |
478 | ||
05864da7 DS |
479 | encaptlvs = bpi->attr->vnc_subtlvs; |
480 | if (bpi->attr->encap_tunneltype != BGP_ENCAP_TYPE_RESERVED | |
481 | && bpi->attr->encap_tunneltype != BGP_ENCAP_TYPE_MPLS) { | |
05864da7 DS |
482 | opt = &optary[cur_opt++]; |
483 | memset(opt, 0, sizeof(struct rfapi_un_option)); | |
484 | opt->type = RFAPI_UN_OPTION_TYPE_TUNNELTYPE; | |
485 | opt->v.tunnel.type = bpi->attr->encap_tunneltype; | |
486 | /* TBD parse bpi->attr->extra->encap_subtlvs */ | |
d62a17ae | 487 | } |
488 | ||
489 | struct ecommunity *new_ecom = ecommunity_dup(ecom); | |
490 | ||
05864da7 | 491 | if (bpi->attr->ecommunity) |
40381db7 | 492 | ecommunity_merge(new_ecom, bpi->attr->ecommunity); |
d62a17ae | 493 | |
40381db7 DS |
494 | if (bpi->extra) |
495 | label = decode_label(&bpi->extra->label[0]); | |
d62a17ae | 496 | |
497 | add_vnc_route(&vncHDResolveNve, bgp, SAFI_MPLS_VPN, | |
498 | prefix, /* unicast route prefix */ | |
499 | prd, &nexthop_h, /* new nexthop */ | |
500 | local_pref, plifetime, | |
501 | (struct bgp_tea_options *)encaptlvs, /* RFP options */ | |
502 | opt, NULL, new_ecom, med, /* NULL => don't set med */ | |
503 | (label ? &label : NULL), /* NULL= default */ | |
504 | ZEBRA_ROUTE_BGP_DIRECT, BGP_ROUTE_REDISTRIBUTE, | |
505 | RFAPI_AHR_RFPOPT_IS_VNCTLV); /* flags */ | |
506 | ||
507 | ecommunity_free(&new_ecom); | |
65efcfce LB |
508 | } |
509 | ||
d62a17ae | 510 | static void vnc_import_bgp_add_route_mode_resolve_nve_one_rd( |
511 | struct prefix_rd *prd, /* RD */ | |
512 | struct bgp_table *table_rd, /* per-rd VPN route table */ | |
513 | afi_t afi, struct bgp *bgp, struct prefix *prefix, /* unicast prefix */ | |
514 | struct ecommunity *ecom, /* generated ecoms */ | |
40381db7 DS |
515 | uint32_t *local_pref, /* NULL = no local_pref */ |
516 | uint32_t *med, /* NULL = no med */ | |
517 | struct prefix *ubpi_nexthop) /* unicast nexthop */ | |
65efcfce | 518 | { |
d62a17ae | 519 | struct bgp_node *bn; |
40381db7 | 520 | struct bgp_path_info *bpi; |
65efcfce | 521 | |
d62a17ae | 522 | if (!table_rd) |
523 | return; | |
65efcfce | 524 | |
d62a17ae | 525 | { |
872ed4c7 | 526 | char str_nh[PREFIX_STRLEN]; |
65efcfce | 527 | |
40381db7 | 528 | prefix2str(ubpi_nexthop, str_nh, sizeof(str_nh)); |
65efcfce | 529 | |
40381db7 | 530 | vnc_zlog_debug_verbose("%s: ubpi_nexthop=%s", __func__, str_nh); |
d62a17ae | 531 | } |
65efcfce | 532 | |
d62a17ae | 533 | /* exact match */ |
40381db7 | 534 | bn = bgp_node_lookup(table_rd, ubpi_nexthop); |
d62a17ae | 535 | if (!bn) { |
536 | vnc_zlog_debug_verbose( | |
40381db7 DS |
537 | "%s: no match in RD's table for ubpi_nexthop", |
538 | __func__); | |
d62a17ae | 539 | return; |
540 | } | |
65efcfce | 541 | |
6f94b685 DS |
542 | /* Iterate over bgp_info items at this node */ |
543 | for (bpi = bgp_node_get_bgp_path_info(bn); bpi; bpi = bpi->next) { | |
65efcfce | 544 | |
d62a17ae | 545 | vnc_import_bgp_add_route_mode_resolve_nve_one_bi( |
40381db7 | 546 | bgp, afi, bpi, /* VPN bpi */ |
d62a17ae | 547 | prd, prefix, local_pref, med, ecom); |
548 | } | |
65efcfce | 549 | |
d62a17ae | 550 | bgp_unlock_node(bn); |
65efcfce LB |
551 | } |
552 | ||
d62a17ae | 553 | static void vnc_import_bgp_add_route_mode_resolve_nve( |
554 | struct bgp *bgp, struct prefix *prefix, /* unicast prefix */ | |
4b7e6066 | 555 | struct bgp_path_info *info) /* unicast info */ |
65efcfce | 556 | { |
d62a17ae | 557 | afi_t afi = family2afi(prefix->family); |
d62a17ae | 558 | |
559 | struct prefix pfx_unicast_nexthop = {0}; /* happy valgrind */ | |
560 | ||
561 | struct ecommunity *ecom = NULL; | |
562 | uint32_t local_pref; | |
563 | uint32_t *med = NULL; | |
564 | ||
565 | struct prefix_bag *pb; | |
566 | struct bgp_node *bnp; /* prd table node */ | |
567 | ||
568 | /*debugging */ | |
7f88f54a | 569 | if (VNC_DEBUG(VERBOSE)) { |
872ed4c7 DS |
570 | char str_pfx[PREFIX_STRLEN]; |
571 | char str_nh[PREFIX_STRLEN]; | |
d62a17ae | 572 | struct prefix nh; |
573 | ||
872ed4c7 | 574 | prefix2str(prefix, str_pfx, sizeof(str_pfx)); |
d62a17ae | 575 | |
576 | nh.prefixlen = 0; | |
577 | rfapiUnicastNexthop2Prefix(afi, info->attr, &nh); | |
578 | if (nh.prefixlen) { | |
872ed4c7 | 579 | prefix2str(&nh, str_nh, sizeof(str_nh)); |
d62a17ae | 580 | } else { |
581 | str_nh[0] = '?'; | |
582 | str_nh[1] = 0; | |
583 | } | |
584 | ||
585 | vnc_zlog_debug_verbose( | |
586 | "%s(bgp=%p, unicast prefix=%s, unicast nh=%s)", | |
587 | __func__, bgp, str_pfx, str_nh); | |
588 | } | |
589 | ||
590 | if (info->type != ZEBRA_ROUTE_BGP) { | |
591 | vnc_zlog_debug_verbose( | |
592 | "%s: unicast type %d=\"%s\" is not %d=%s, skipping", | |
593 | __func__, info->type, zebra_route_string(info->type), | |
594 | ZEBRA_ROUTE_BGP, "ZEBRA_ROUTE_BGP"); | |
595 | return; | |
596 | } | |
597 | ||
598 | /* | |
599 | * Preliminary checks | |
600 | */ | |
601 | ||
602 | if (!afi) { | |
450971aa | 603 | flog_err(EC_LIB_DEVELOPMENT, "%s: can't get afi of prefix", |
1c50c1c0 | 604 | __func__); |
d62a17ae | 605 | return; |
606 | } | |
607 | ||
3f54c705 | 608 | if (!(bgp->rfapi_cfg)) { |
d62a17ae | 609 | vnc_zlog_debug_verbose("%s: bgp->rfapi_cfg is NULL, skipping", |
610 | __func__); | |
611 | return; | |
612 | } | |
613 | ||
614 | /* check vnc redist flag for bgp direct routes */ | |
615 | if (!bgp->rfapi_cfg->redist[afi][ZEBRA_ROUTE_BGP_DIRECT]) { | |
616 | vnc_zlog_debug_verbose( | |
617 | "%s: bgp->rfapi_cfg->redist[afi=%d][type=ZEBRA_ROUTE_BGP_DIRECT] is 0, skipping", | |
618 | __func__, afi); | |
619 | return; | |
620 | } | |
621 | ||
622 | ||
623 | if (process_unicast_route(bgp, afi, prefix, info, &ecom, | |
624 | &pfx_unicast_nexthop)) { | |
625 | ||
626 | vnc_zlog_debug_verbose( | |
627 | "%s: process_unicast_route error, skipping", __func__); | |
628 | return; | |
629 | } | |
630 | ||
631 | local_pref = calc_local_pref(info->attr, info->peer); | |
05864da7 | 632 | if (info->attr->flag & ATTR_FLAG_BIT(BGP_ATTR_MULTI_EXIT_DISC)) |
d62a17ae | 633 | med = &info->attr->med; |
d62a17ae | 634 | |
635 | /* | |
636 | * At this point, we have allocated: | |
637 | * | |
638 | * ecom ecommunity ptr, union of unicast and ROO parts (no NVE part) | |
639 | * | |
640 | * And we have set: | |
641 | * | |
642 | * pfx_unicast_nexthop nexthop of uncast route | |
643 | */ | |
644 | ||
645 | if (!bgp->rfapi->resolve_nve_nexthop) { | |
646 | bgp->rfapi->resolve_nve_nexthop = | |
647 | skiplist_new(SKIPLIST_FLAG_ALLOW_DUPLICATES, | |
648 | vnc_prefix_cmp, prefix_bag_free); | |
649 | } | |
650 | ||
651 | pb = XCALLOC(MTYPE_RFAPI_PREFIX_BAG, sizeof(struct prefix_bag)); | |
652 | pb->hpfx = pfx_unicast_nexthop; | |
40381db7 | 653 | pb->ubpi = info; |
d62a17ae | 654 | pb->upfx = *prefix; |
655 | ||
18ee8310 | 656 | bgp_path_info_lock(info); /* skiplist refers to it */ |
d62a17ae | 657 | skiplist_insert(bgp->rfapi->resolve_nve_nexthop, &pb->hpfx, pb); |
658 | ||
659 | /* | |
660 | * Iterate over RDs in VPN RIB. For each RD, look up unicast nexthop | |
661 | * (exact match, /32). If an exact match is found, call add_vnc_route. | |
662 | */ | |
663 | ||
664 | for (bnp = bgp_table_top(bgp->rib[afi][SAFI_MPLS_VPN]); bnp; | |
665 | bnp = bgp_route_next(bnp)) { | |
666 | ||
667 | struct bgp_table *table; | |
668 | ||
67009e22 | 669 | table = bgp_node_get_bgp_table_info(bnp); |
d62a17ae | 670 | |
671 | if (!table) | |
672 | continue; | |
673 | ||
674 | vnc_import_bgp_add_route_mode_resolve_nve_one_rd( | |
675 | (struct prefix_rd *)&bnp->p, table, afi, bgp, prefix, | |
676 | ecom, &local_pref, med, &pfx_unicast_nexthop); | |
677 | } | |
678 | ||
679 | ||
680 | if (ecom) | |
681 | ecommunity_free(&ecom); | |
682 | ||
683 | vnc_zlog_debug_verbose("%s: done", __func__); | |
65efcfce LB |
684 | } |
685 | ||
686 | ||
d62a17ae | 687 | static void vnc_import_bgp_add_route_mode_plain(struct bgp *bgp, |
688 | struct prefix *prefix, | |
4b7e6066 | 689 | struct bgp_path_info *info) |
65efcfce | 690 | { |
d62a17ae | 691 | afi_t afi = family2afi(prefix->family); |
692 | struct peer *peer = info->peer; | |
693 | struct attr *attr = info->attr; | |
694 | struct attr hattr; | |
3f54c705 | 695 | struct rfapi_cfg *hc = bgp->rfapi_cfg; |
d62a17ae | 696 | struct attr *iattr = NULL; |
697 | ||
698 | struct rfapi_ip_addr vnaddr; | |
699 | struct prefix vn_pfx_space; | |
700 | struct prefix *vn_pfx = NULL; | |
701 | int ahr_flags = 0; | |
702 | struct ecommunity *ecom = NULL; | |
703 | struct prefix_rd prd; | |
704 | struct route_map *rmap = NULL; | |
705 | uint32_t local_pref; | |
706 | uint32_t *med = NULL; | |
707 | ||
708 | { | |
872ed4c7 | 709 | char buf[PREFIX_STRLEN]; |
d62a17ae | 710 | |
872ed4c7 | 711 | prefix2str(prefix, buf, sizeof(buf)); |
d62a17ae | 712 | vnc_zlog_debug_verbose("%s(prefix=%s) entry", __func__, buf); |
713 | } | |
714 | ||
715 | if (!afi) { | |
450971aa | 716 | flog_err(EC_LIB_DEVELOPMENT, "%s: can't get afi of prefix", |
1c50c1c0 | 717 | __func__); |
d62a17ae | 718 | return; |
719 | } | |
720 | ||
3f54c705 | 721 | if (!hc) { |
d62a17ae | 722 | vnc_zlog_debug_verbose("%s: bgp->rfapi_cfg is NULL, skipping", |
723 | __func__); | |
724 | return; | |
725 | } | |
726 | ||
727 | /* check vnc redist flag for bgp direct routes */ | |
728 | if (!bgp->rfapi_cfg->redist[afi][ZEBRA_ROUTE_BGP_DIRECT]) { | |
729 | vnc_zlog_debug_verbose( | |
730 | "%s: bgp->rfapi_cfg->redist[afi=%d][type=ZEBRA_ROUTE_BGP_DIRECT] is 0, skipping", | |
731 | __func__, afi); | |
732 | return; | |
733 | } | |
734 | ||
735 | /* | |
736 | * mode "plain" specific code | |
737 | */ | |
738 | { | |
739 | vnc_zlog_debug_verbose("%s: NOT using redist RFG", __func__); | |
740 | ||
741 | /* | |
742 | * prefix list check | |
743 | */ | |
744 | if (hc->plist_redist[ZEBRA_ROUTE_BGP_DIRECT][afi]) { | |
745 | vnc_zlog_debug_verbose( | |
746 | "%s: HC prefix list is set, checking", | |
747 | __func__); | |
748 | if (prefix_list_apply( | |
749 | hc->plist_redist[ZEBRA_ROUTE_BGP_DIRECT] | |
750 | [afi], | |
751 | prefix) | |
752 | == PREFIX_DENY) { | |
753 | vnc_zlog_debug_verbose( | |
754 | "%s: prefix list returns DENY, blocking route", | |
755 | __func__); | |
756 | return; | |
757 | } | |
758 | vnc_zlog_debug_verbose( | |
759 | "%s: prefix list returns PASS, allowing route", | |
760 | __func__); | |
761 | } | |
762 | ||
763 | /* apply routemap, if any, later */ | |
764 | rmap = hc->routemap_redist[ZEBRA_ROUTE_BGP_DIRECT]; | |
765 | ||
766 | /* | |
767 | * Incoming prefix is unicast. If v6, it is in multiprotocol | |
768 | * area, | |
769 | * but if v4 it is in attr->nexthop | |
770 | */ | |
771 | rfapiUnicastNexthop2Prefix(afi, attr, &vn_pfx_space); | |
772 | vn_pfx = &vn_pfx_space; | |
773 | ||
774 | /* UN address */ | |
775 | ahr_flags |= RFAPI_AHR_NO_TUNNEL_SUBTLV; | |
776 | } | |
777 | ||
778 | if (VNC_DEBUG(IMPORT_BGP_ADD_ROUTE)) { | |
872ed4c7 | 779 | char buf[PREFIX_STRLEN]; |
d62a17ae | 780 | |
872ed4c7 | 781 | prefix2str(vn_pfx, buf, sizeof(buf)); |
d62a17ae | 782 | vnc_zlog_debug_any("%s vn_pfx=%s", __func__, buf); |
783 | } | |
784 | ||
785 | /* | |
786 | * Compute VN address | |
787 | */ | |
788 | if (rfapiQprefix2Raddr(vn_pfx, &vnaddr)) { | |
789 | vnc_zlog_debug_verbose("%s: redist VN invalid, skipping", | |
790 | __func__); | |
791 | return; | |
792 | } | |
793 | ||
794 | /* | |
795 | * route map handling | |
796 | * This code is here because it allocates an interned attr which | |
797 | * must be freed before we return. It's easier to put it after | |
798 | * all of the possible returns above. | |
799 | */ | |
800 | memset(&hattr, 0, sizeof(struct attr)); | |
801 | bgp_attr_dup(&hattr, attr); /* hattr becomes a ghost attr */ | |
802 | ||
803 | if (rmap) { | |
4b7e6066 | 804 | struct bgp_path_info info; |
d62a17ae | 805 | route_map_result_t ret; |
806 | ||
807 | memset(&info, 0, sizeof(info)); | |
808 | info.peer = peer; | |
809 | info.attr = &hattr; | |
810 | ret = route_map_apply(rmap, prefix, RMAP_BGP, &info); | |
811 | if (ret == RMAP_DENYMATCH) { | |
812 | bgp_attr_flush(&hattr); | |
813 | vnc_zlog_debug_verbose( | |
814 | "%s: route map \"%s\" says DENY, returning", | |
815 | __func__, rmap->name); | |
816 | return; | |
817 | } | |
818 | } | |
819 | ||
820 | iattr = bgp_attr_intern(&hattr); | |
821 | bgp_attr_flush(&hattr); | |
822 | ||
823 | /* Now iattr is an allocated interned attr */ | |
824 | ||
825 | /* | |
826 | * Mode "plain" specific code | |
827 | * | |
828 | * Sets RD in dummy HD | |
829 | * Allocates ecom | |
830 | */ | |
831 | { | |
832 | if (vnaddr.addr_family != AF_INET) { | |
833 | vnc_zlog_debug_verbose( | |
834 | "%s: can't auto-assign RD, VN AF (%d) is not IPv4, skipping", | |
835 | __func__, vnaddr.addr_family); | |
836 | if (iattr) { | |
837 | bgp_attr_unintern(&iattr); | |
838 | } | |
839 | return; | |
840 | } | |
841 | memset(&prd, 0, sizeof(prd)); | |
842 | rfapi_set_autord_from_vn(&prd, &vnaddr); | |
843 | ||
844 | if (iattr && iattr->ecommunity) | |
845 | ecom = ecommunity_dup(iattr->ecommunity); | |
846 | } | |
847 | ||
848 | local_pref = calc_local_pref(iattr, peer); | |
849 | ||
850 | if (iattr && (iattr->flag & ATTR_FLAG_BIT(BGP_ATTR_MULTI_EXIT_DISC))) { | |
851 | med = &iattr->med; | |
852 | } | |
853 | ||
854 | if (VNC_DEBUG(IMPORT_BGP_ADD_ROUTE)) { | |
872ed4c7 | 855 | char buf[PREFIX_STRLEN]; |
d62a17ae | 856 | |
872ed4c7 | 857 | rfapiRfapiIpAddr2Str(&vnaddr, buf, sizeof(buf)); |
d62a17ae | 858 | vnc_zlog_debug_any("%s: setting vnaddr to %s", __func__, buf); |
859 | } | |
860 | ||
861 | vncHDBgpDirect.peer = peer; | |
862 | add_vnc_route(&vncHDBgpDirect, bgp, SAFI_MPLS_VPN, prefix, &prd, | |
863 | &vnaddr, &local_pref, &(bgp->rfapi_cfg->redist_lifetime), | |
864 | NULL, /* RFP options */ | |
865 | NULL, NULL, ecom, med, /* med */ | |
866 | NULL, /* label: default */ | |
867 | ZEBRA_ROUTE_BGP_DIRECT, BGP_ROUTE_REDISTRIBUTE, | |
868 | ahr_flags); | |
869 | vncHDBgpDirect.peer = NULL; | |
870 | ||
871 | if (ecom) | |
872 | ecommunity_free(&ecom); | |
65efcfce LB |
873 | } |
874 | ||
875 | static void | |
d62a17ae | 876 | vnc_import_bgp_add_route_mode_nvegroup(struct bgp *bgp, struct prefix *prefix, |
4b7e6066 | 877 | struct bgp_path_info *info, |
d62a17ae | 878 | struct rfapi_nve_group_cfg *rfg) |
65efcfce | 879 | { |
d62a17ae | 880 | afi_t afi = family2afi(prefix->family); |
881 | struct peer *peer = info->peer; | |
882 | struct attr *attr = info->attr; | |
883 | struct attr hattr; | |
d62a17ae | 884 | struct attr *iattr = NULL; |
885 | ||
886 | struct rfapi_ip_addr vnaddr; | |
887 | struct prefix *vn_pfx = NULL; | |
888 | int ahr_flags = 0; | |
889 | struct ecommunity *ecom = NULL; | |
890 | struct prefix_rd prd; | |
891 | struct route_map *rmap = NULL; | |
892 | uint32_t local_pref; | |
893 | ||
894 | { | |
872ed4c7 | 895 | char buf[PREFIX_STRLEN]; |
d62a17ae | 896 | |
872ed4c7 | 897 | prefix2str(prefix, buf, sizeof(buf)); |
d62a17ae | 898 | vnc_zlog_debug_verbose("%s(prefix=%s) entry", __func__, buf); |
899 | } | |
900 | ||
901 | assert(rfg); | |
902 | ||
903 | if (!afi) { | |
450971aa | 904 | flog_err(EC_LIB_DEVELOPMENT, "%s: can't get afi of prefix", |
1c50c1c0 | 905 | __func__); |
d62a17ae | 906 | return; |
907 | } | |
908 | ||
3f54c705 | 909 | if (!(bgp->rfapi_cfg)) { |
d62a17ae | 910 | vnc_zlog_debug_verbose("%s: bgp->rfapi_cfg is NULL, skipping", |
911 | __func__); | |
912 | return; | |
913 | } | |
914 | ||
915 | /* check vnc redist flag for bgp direct routes */ | |
916 | if (!bgp->rfapi_cfg->redist[afi][ZEBRA_ROUTE_BGP_DIRECT]) { | |
917 | vnc_zlog_debug_verbose( | |
918 | "%s: bgp->rfapi_cfg->redist[afi=%d][type=ZEBRA_ROUTE_BGP_DIRECT] is 0, skipping", | |
919 | __func__, afi); | |
920 | return; | |
921 | } | |
922 | ||
923 | ||
924 | /* | |
925 | * RFG-specific code | |
926 | */ | |
927 | { | |
928 | ||
929 | struct rfapi_ip_prefix pfx_un; | |
930 | ||
931 | vnc_zlog_debug_verbose("%s: using redist RFG", __func__); | |
932 | ||
933 | /* | |
934 | * RFG prefix list check | |
935 | */ | |
936 | if (rfg->plist_redist[ZEBRA_ROUTE_BGP_DIRECT][afi]) { | |
937 | vnc_zlog_debug_verbose( | |
938 | "%s: RFG prefix list is set, checking", | |
939 | __func__); | |
940 | if (prefix_list_apply( | |
941 | rfg->plist_redist[ZEBRA_ROUTE_BGP_DIRECT] | |
942 | [afi], | |
943 | prefix) | |
944 | == PREFIX_DENY) { | |
945 | vnc_zlog_debug_verbose( | |
946 | "%s: prefix list returns DENY, blocking route", | |
947 | __func__); | |
948 | return; | |
949 | } | |
950 | vnc_zlog_debug_verbose( | |
951 | "%s: prefix list returns PASS, allowing route", | |
952 | __func__); | |
953 | } | |
954 | ||
955 | /* apply routemap, if any, later */ | |
956 | rmap = rfg->routemap_redist[ZEBRA_ROUTE_BGP_DIRECT]; | |
957 | ||
958 | /* | |
959 | * export nve group's VN addr prefix must be a /32 which | |
960 | * will yield the VN addr to use | |
961 | */ | |
962 | vn_pfx = &rfg->vn_prefix; | |
963 | ||
964 | /* | |
965 | * UN Address | |
966 | */ | |
967 | if (!is_host_prefix(&rfg->un_prefix)) { | |
968 | /* NB prefixlen==0 means it has not been configured */ | |
969 | vnc_zlog_debug_verbose( | |
970 | "%s: redist RFG UN pfx not host pfx (plen=%d), skipping", | |
971 | __func__, rfg->un_prefix.prefixlen); | |
972 | return; | |
973 | } | |
974 | ||
975 | rfapiQprefix2Rprefix(&rfg->un_prefix, &pfx_un); | |
976 | ||
977 | vncHDBgpDirect.un_addr = pfx_un.prefix; | |
978 | } | |
979 | ||
980 | if (VNC_DEBUG(IMPORT_BGP_ADD_ROUTE)) { | |
872ed4c7 | 981 | char buf[PREFIX_STRLEN]; |
d62a17ae | 982 | |
872ed4c7 | 983 | prefix2str(vn_pfx, buf, sizeof(buf)); |
d62a17ae | 984 | vnc_zlog_debug_any("%s vn_pfx=%s", __func__, buf); |
985 | } | |
986 | ||
987 | /* | |
988 | * Compute VN address | |
989 | */ | |
990 | if (rfapiQprefix2Raddr(vn_pfx, &vnaddr)) { | |
991 | vnc_zlog_debug_verbose("%s: redist VN invalid, skipping", | |
992 | __func__); | |
993 | return; | |
994 | } | |
995 | ||
996 | /* | |
997 | * route map handling | |
998 | * This code is here because it allocates an interned attr which | |
999 | * must be freed before we return. It's easier to put it after | |
1000 | * all of the possible returns above. | |
1001 | */ | |
1002 | memset(&hattr, 0, sizeof(struct attr)); | |
1003 | bgp_attr_dup(&hattr, attr); /* hattr becomes a ghost attr */ | |
1004 | ||
1005 | if (rmap) { | |
9b6d8fcf | 1006 | struct bgp_path_info path; |
d62a17ae | 1007 | route_map_result_t ret; |
1008 | ||
9b6d8fcf DS |
1009 | memset(&path, 0, sizeof(path)); |
1010 | path.peer = peer; | |
1011 | path.attr = &hattr; | |
1012 | ret = route_map_apply(rmap, prefix, RMAP_BGP, &path); | |
d62a17ae | 1013 | if (ret == RMAP_DENYMATCH) { |
1014 | bgp_attr_flush(&hattr); | |
1015 | vnc_zlog_debug_verbose( | |
1016 | "%s: route map \"%s\" says DENY, returning", | |
1017 | __func__, rmap->name); | |
1018 | return; | |
1019 | } | |
1020 | } | |
1021 | ||
1022 | iattr = bgp_attr_intern(&hattr); | |
1023 | bgp_attr_flush(&hattr); | |
1024 | ||
1025 | /* Now iattr is an allocated interned attr */ | |
1026 | ||
1027 | /* | |
1028 | * RFG-specific code | |
1029 | * | |
1030 | * Sets RD in dummy HD | |
1031 | * Allocates ecom | |
1032 | */ | |
1033 | { | |
1034 | ||
1035 | memset(&prd, 0, sizeof(prd)); | |
1036 | prd = rfg->rd; | |
1037 | prd.family = AF_UNSPEC; | |
1038 | prd.prefixlen = 64; | |
1039 | ||
1040 | if (rfg->rd.family == AF_UNIX) { | |
1041 | rfapi_set_autord_from_vn(&prd, &vnaddr); | |
1042 | } | |
1043 | ||
1044 | if (rfg->rt_export_list) | |
1045 | ecom = ecommunity_dup( | |
1046 | bgp->rfapi_cfg->rfg_redist->rt_export_list); | |
1047 | else | |
1048 | ecom = ecommunity_new(); | |
1049 | ||
1050 | if (iattr && iattr->ecommunity) | |
1051 | ecom = ecommunity_merge(ecom, iattr->ecommunity); | |
1052 | } | |
1053 | ||
1054 | local_pref = calc_local_pref(iattr, peer); | |
1055 | ||
1056 | if (VNC_DEBUG(IMPORT_BGP_ADD_ROUTE)) { | |
1057 | char buf[BUFSIZ]; | |
1058 | ||
1059 | buf[0] = 0; | |
1060 | rfapiRfapiIpAddr2Str(&vnaddr, buf, BUFSIZ); | |
1061 | buf[BUFSIZ - 1] = 0; | |
1062 | vnc_zlog_debug_any("%s: setting vnaddr to %s", __func__, buf); | |
1063 | } | |
1064 | ||
1065 | vncHDBgpDirect.peer = peer; | |
1066 | add_vnc_route(&vncHDBgpDirect, bgp, SAFI_MPLS_VPN, prefix, &prd, | |
1067 | &vnaddr, &local_pref, &(bgp->rfapi_cfg->redist_lifetime), | |
1068 | NULL, /* RFP options */ | |
1069 | NULL, NULL, ecom, NULL, /* med */ | |
1070 | NULL, /* label: default */ | |
1071 | ZEBRA_ROUTE_BGP_DIRECT, BGP_ROUTE_REDISTRIBUTE, | |
1072 | ahr_flags); | |
1073 | vncHDBgpDirect.peer = NULL; | |
1074 | ||
1075 | if (ecom) | |
1076 | ecommunity_free(&ecom); | |
65efcfce LB |
1077 | } |
1078 | ||
d62a17ae | 1079 | static void vnc_import_bgp_del_route_mode_plain(struct bgp *bgp, |
1080 | struct prefix *prefix, | |
4b7e6066 | 1081 | struct bgp_path_info *info) |
65efcfce | 1082 | { |
d62a17ae | 1083 | struct prefix_rd prd; |
1084 | afi_t afi = family2afi(prefix->family); | |
1085 | struct prefix *vn_pfx = NULL; | |
1086 | struct rfapi_ip_addr vnaddr; | |
1087 | struct prefix vn_pfx_space; | |
1088 | ||
1089 | ||
1090 | assert(afi); | |
1091 | ||
1092 | /* | |
1093 | * Compute VN address | |
1094 | */ | |
1095 | ||
05864da7 | 1096 | if (info) { |
d62a17ae | 1097 | rfapiUnicastNexthop2Prefix(afi, info->attr, &vn_pfx_space); |
1098 | } else { | |
1099 | vnc_zlog_debug_verbose("%s: no attr, can't delete route", | |
1100 | __func__); | |
1101 | return; | |
1102 | } | |
1103 | vn_pfx = &vn_pfx_space; | |
1104 | ||
1105 | vnaddr.addr_family = vn_pfx->family; | |
1106 | switch (vn_pfx->family) { | |
1107 | case AF_INET: | |
1108 | if (vn_pfx->prefixlen != 32) { | |
1109 | vnc_zlog_debug_verbose( | |
1110 | "%s: redist VN plen (%d) != 32, skipping", | |
1111 | __func__, vn_pfx->prefixlen); | |
1112 | return; | |
1113 | } | |
1114 | vnaddr.addr.v4 = vn_pfx->u.prefix4; | |
1115 | break; | |
1116 | ||
1117 | case AF_INET6: | |
1118 | if (vn_pfx->prefixlen != 128) { | |
1119 | vnc_zlog_debug_verbose( | |
1120 | "%s: redist VN plen (%d) != 128, skipping", | |
1121 | __func__, vn_pfx->prefixlen); | |
1122 | return; | |
1123 | } | |
1124 | vnaddr.addr.v6 = vn_pfx->u.prefix6; | |
1125 | break; | |
1126 | ||
1127 | default: | |
1128 | vnc_zlog_debug_verbose( | |
1129 | "%s: no redist RFG VN host pfx configured, skipping", | |
1130 | __func__); | |
1131 | return; | |
1132 | } | |
1133 | ||
1134 | ||
1135 | memset(&prd, 0, sizeof(prd)); | |
1136 | if (rfapi_set_autord_from_vn(&prd, &vnaddr)) { | |
1137 | vnc_zlog_debug_verbose("%s: can't auto-assign RD, skipping", | |
1138 | __func__); | |
1139 | return; | |
1140 | } | |
1141 | ||
1142 | vncHDBgpDirect.peer = info->peer; | |
1143 | vnc_zlog_debug_verbose("%s: setting peer to %p", __func__, | |
1144 | vncHDBgpDirect.peer); | |
1145 | del_vnc_route(&vncHDBgpDirect, info->peer, bgp, SAFI_MPLS_VPN, prefix, | |
1146 | &prd, ZEBRA_ROUTE_BGP_DIRECT, BGP_ROUTE_REDISTRIBUTE, | |
1147 | NULL, 1); | |
1148 | ||
1149 | vncHDBgpDirect.peer = NULL; | |
65efcfce LB |
1150 | } |
1151 | ||
d62a17ae | 1152 | static void vnc_import_bgp_del_route_mode_nvegroup(struct bgp *bgp, |
1153 | struct prefix *prefix, | |
4b7e6066 | 1154 | struct bgp_path_info *info) |
65efcfce | 1155 | { |
d62a17ae | 1156 | struct prefix_rd prd; |
1157 | afi_t afi = family2afi(prefix->family); | |
1158 | struct rfapi_nve_group_cfg *rfg = NULL; | |
1159 | struct prefix *vn_pfx = NULL; | |
1160 | struct rfapi_ip_addr vnaddr; | |
1161 | ||
1162 | ||
1163 | assert(afi); | |
1164 | ||
2ad7c8ec DS |
1165 | rfg = bgp->rfapi_cfg->rfg_redist; |
1166 | assert(rfg); | |
d62a17ae | 1167 | |
1168 | /* | |
1169 | * Compute VN address | |
1170 | */ | |
1171 | ||
1172 | /* | |
1173 | * export nve group's VN addr prefix must be a /32 which | |
1174 | * will yield the VN addr to use | |
1175 | */ | |
1176 | vn_pfx = &rfg->vn_prefix; | |
1177 | ||
1178 | ||
1179 | vnaddr.addr_family = vn_pfx->family; | |
1180 | switch (vn_pfx->family) { | |
1181 | case AF_INET: | |
1182 | if (vn_pfx->prefixlen != 32) { | |
1183 | vnc_zlog_debug_verbose( | |
1184 | "%s: redist VN plen (%d) != 32, skipping", | |
1185 | __func__, vn_pfx->prefixlen); | |
1186 | return; | |
1187 | } | |
1188 | vnaddr.addr.v4 = vn_pfx->u.prefix4; | |
1189 | break; | |
1190 | ||
1191 | case AF_INET6: | |
1192 | if (vn_pfx->prefixlen != 128) { | |
1193 | vnc_zlog_debug_verbose( | |
1194 | "%s: redist VN plen (%d) != 128, skipping", | |
1195 | __func__, vn_pfx->prefixlen); | |
1196 | return; | |
1197 | } | |
1198 | vnaddr.addr.v6 = vn_pfx->u.prefix6; | |
1199 | break; | |
1200 | ||
1201 | default: | |
1202 | vnc_zlog_debug_verbose( | |
1203 | "%s: no redist RFG VN host pfx configured, skipping", | |
1204 | __func__); | |
1205 | return; | |
1206 | } | |
1207 | ||
1208 | memset(&prd, 0, sizeof(prd)); | |
1209 | prd = rfg->rd; | |
1210 | prd.family = AF_UNSPEC; | |
1211 | prd.prefixlen = 64; | |
1212 | ||
1213 | if (rfg->rd.family == AF_UNIX) { | |
1214 | /* means "auto" with VN addr */ | |
1215 | if (rfapi_set_autord_from_vn(&prd, &vnaddr)) { | |
1216 | vnc_zlog_debug_verbose( | |
1217 | "%s: can't auto-assign RD, skipping", __func__); | |
1218 | return; | |
1219 | } | |
1220 | } | |
1221 | ||
1222 | ||
1223 | vncHDBgpDirect.peer = info->peer; | |
1224 | vnc_zlog_debug_verbose("%s: setting peer to %p", __func__, | |
1225 | vncHDBgpDirect.peer); | |
1226 | del_vnc_route(&vncHDBgpDirect, info->peer, bgp, SAFI_MPLS_VPN, prefix, | |
1227 | &prd, ZEBRA_ROUTE_BGP_DIRECT, BGP_ROUTE_REDISTRIBUTE, | |
1228 | NULL, 1); | |
1229 | ||
1230 | vncHDBgpDirect.peer = NULL; | |
65efcfce LB |
1231 | } |
1232 | ||
d62a17ae | 1233 | static void vnc_import_bgp_del_route_mode_resolve_nve_one_bi( |
40381db7 DS |
1234 | struct bgp *bgp, afi_t afi, struct bgp_path_info *bpi, /* VPN bpi */ |
1235 | struct prefix_rd *prd, /* RD */ | |
d62a17ae | 1236 | struct prefix *prefix) /* unicast route prefix */ |
65efcfce | 1237 | { |
d62a17ae | 1238 | struct prefix un; |
1239 | ||
40381db7 DS |
1240 | if (bpi->type != ZEBRA_ROUTE_BGP |
1241 | && bpi->type != ZEBRA_ROUTE_BGP_DIRECT) { | |
65efcfce | 1242 | |
d62a17ae | 1243 | return; |
1244 | } | |
40381db7 DS |
1245 | if (bpi->sub_type != BGP_ROUTE_NORMAL |
1246 | && bpi->sub_type != BGP_ROUTE_STATIC | |
1247 | && bpi->sub_type != BGP_ROUTE_RFP) { | |
d62a17ae | 1248 | |
1249 | return; | |
1250 | } | |
40381db7 | 1251 | if (CHECK_FLAG(bpi->flags, BGP_PATH_REMOVED)) |
d62a17ae | 1252 | return; |
1253 | ||
40381db7 DS |
1254 | vncHDResolveNve.peer = bpi->peer; |
1255 | if (!rfapiGetVncTunnelUnAddr(bpi->attr, &un)) { | |
d62a17ae | 1256 | if (rfapiQprefix2Raddr(&un, &vncHDResolveNve.un_addr)) |
1257 | return; | |
1258 | } else { | |
1259 | memset(&vncHDResolveNve.un_addr, 0, | |
1260 | sizeof(vncHDResolveNve.un_addr)); | |
1261 | } | |
1262 | ||
1263 | del_vnc_route(&vncHDResolveNve, vncHDResolveNve.peer, bgp, | |
1264 | SAFI_MPLS_VPN, prefix, /* unicast route prefix */ | |
1265 | prd, ZEBRA_ROUTE_BGP_DIRECT, BGP_ROUTE_REDISTRIBUTE, NULL, | |
1266 | 0); /* flags */ | |
65efcfce LB |
1267 | } |
1268 | ||
d62a17ae | 1269 | static void vnc_import_bgp_del_route_mode_resolve_nve_one_rd( |
1270 | struct prefix_rd *prd, | |
1271 | struct bgp_table *table_rd, /* per-rd VPN route table */ | |
1272 | afi_t afi, struct bgp *bgp, struct prefix *prefix, /* unicast prefix */ | |
40381db7 | 1273 | struct prefix *ubpi_nexthop) /* unicast bpi's nexthop */ |
65efcfce | 1274 | { |
d62a17ae | 1275 | struct bgp_node *bn; |
40381db7 | 1276 | struct bgp_path_info *bpi; |
65efcfce | 1277 | |
d62a17ae | 1278 | if (!table_rd) |
1279 | return; | |
65efcfce | 1280 | |
d62a17ae | 1281 | { |
872ed4c7 | 1282 | char str_nh[PREFIX_STRLEN]; |
65efcfce | 1283 | |
40381db7 DS |
1284 | prefix2str(ubpi_nexthop, str_nh, sizeof(str_nh)); |
1285 | vnc_zlog_debug_verbose("%s: ubpi_nexthop=%s", __func__, str_nh); | |
d62a17ae | 1286 | } |
65efcfce LB |
1287 | |
1288 | ||
d62a17ae | 1289 | /* exact match */ |
40381db7 | 1290 | bn = bgp_node_lookup(table_rd, ubpi_nexthop); |
d62a17ae | 1291 | if (!bn) { |
1292 | vnc_zlog_debug_verbose( | |
40381db7 DS |
1293 | "%s: no match in RD's table for ubpi_nexthop", |
1294 | __func__); | |
d62a17ae | 1295 | return; |
1296 | } | |
65efcfce | 1297 | |
6f94b685 DS |
1298 | /* Iterate over bgp_info items at this node */ |
1299 | for (bpi = bgp_node_get_bgp_path_info(bn); bpi; bpi = bpi->next) { | |
65efcfce | 1300 | |
d62a17ae | 1301 | vnc_import_bgp_del_route_mode_resolve_nve_one_bi( |
40381db7 DS |
1302 | bgp, afi, bpi, /* VPN bpi */ |
1303 | prd, /* VPN RD */ | |
1304 | prefix); /* unicast route prefix */ | |
d62a17ae | 1305 | } |
65efcfce | 1306 | |
d62a17ae | 1307 | bgp_unlock_node(bn); |
65efcfce LB |
1308 | } |
1309 | ||
4b7e6066 DS |
1310 | static void |
1311 | vnc_import_bgp_del_route_mode_resolve_nve(struct bgp *bgp, afi_t afi, | |
1312 | struct prefix *prefix, | |
1313 | struct bgp_path_info *info) | |
65efcfce | 1314 | { |
d62a17ae | 1315 | struct ecommunity *ecom = NULL; |
1316 | struct prefix pfx_unicast_nexthop = {0}; /* happy valgrind */ | |
1317 | ||
1318 | // struct listnode *hnode; | |
1319 | // struct rfapi_descriptor *rfd; | |
1320 | struct prefix_bag *pb; | |
1321 | void *cursor; | |
1322 | struct skiplist *sl = bgp->rfapi->resolve_nve_nexthop; | |
1323 | int rc; | |
1324 | struct bgp_node *bnp; /* prd table node */ | |
1325 | ||
1326 | if (!sl) { | |
1327 | vnc_zlog_debug_verbose("%s: no RHN entries, skipping", | |
1328 | __func__); | |
1329 | return; | |
1330 | } | |
65efcfce | 1331 | |
d62a17ae | 1332 | if (info->type != ZEBRA_ROUTE_BGP) { |
1333 | vnc_zlog_debug_verbose( | |
1334 | "%s: unicast type %d=\"%s\" is not %d=%s, skipping", | |
1335 | __func__, info->type, zebra_route_string(info->type), | |
1336 | ZEBRA_ROUTE_BGP, "ZEBRA_ROUTE_BGP"); | |
1337 | return; | |
1338 | } | |
65efcfce | 1339 | |
d62a17ae | 1340 | if (process_unicast_route(bgp, afi, prefix, info, &ecom, |
1341 | &pfx_unicast_nexthop)) { | |
1342 | ||
1343 | vnc_zlog_debug_verbose( | |
1344 | "%s: process_unicast_route error, skipping", __func__); | |
1345 | return; | |
1346 | } | |
1347 | ||
1348 | rc = skiplist_first_value(sl, &pfx_unicast_nexthop, (void *)&pb, | |
1349 | &cursor); | |
1350 | while (!rc) { | |
40381db7 | 1351 | if (pb->ubpi == info) { |
d62a17ae | 1352 | skiplist_delete(sl, &pfx_unicast_nexthop, pb); |
18ee8310 | 1353 | bgp_path_info_unlock(info); |
d62a17ae | 1354 | break; |
1355 | } | |
1356 | rc = skiplist_next_value(sl, &pfx_unicast_nexthop, (void *)&pb, | |
1357 | &cursor); | |
1358 | } | |
1359 | ||
1360 | /* | |
1361 | * Iterate over RDs in VPN RIB. For each RD, look up unicast nexthop | |
1362 | * (exact match, /32). If an exact match is found, call add_vnc_route. | |
1363 | */ | |
1364 | ||
1365 | for (bnp = bgp_table_top(bgp->rib[afi][SAFI_MPLS_VPN]); bnp; | |
1366 | bnp = bgp_route_next(bnp)) { | |
1367 | ||
1368 | struct bgp_table *table; | |
1369 | ||
67009e22 | 1370 | table = bgp_node_get_bgp_table_info(bnp); |
d62a17ae | 1371 | |
1372 | if (!table) | |
1373 | continue; | |
1374 | ||
1375 | vnc_import_bgp_del_route_mode_resolve_nve_one_rd( | |
1376 | (struct prefix_rd *)&bnp->p, table, afi, bgp, prefix, | |
1377 | &pfx_unicast_nexthop); /* TBD how is this set? */ | |
1378 | } | |
1379 | ||
1380 | if (ecom) | |
1381 | ecommunity_free(&ecom); | |
1382 | } | |
65efcfce LB |
1383 | |
1384 | ||
1385 | /*********************************************************************** | |
1386 | * Add/Delete CE->NVE routes | |
1387 | ***********************************************************************/ | |
1388 | ||
1389 | /* | |
40381db7 | 1390 | * Should be called whan a bpi is added to VPN RIB. This function |
65efcfce LB |
1391 | * will check if it is a host route and return immediately if not. |
1392 | */ | |
d62a17ae | 1393 | void vnc_import_bgp_add_vnc_host_route_mode_resolve_nve( |
1394 | struct bgp *bgp, struct prefix_rd *prd, /* RD */ | |
1395 | struct bgp_table *table_rd, /* per-rd VPN route table */ | |
1396 | struct prefix *prefix, /* VPN prefix */ | |
40381db7 | 1397 | struct bgp_path_info *bpi) /* new VPN host route */ |
65efcfce | 1398 | { |
d62a17ae | 1399 | afi_t afi = family2afi(prefix->family); |
1400 | struct skiplist *sl = NULL; | |
1401 | int rc; | |
1402 | struct prefix_bag *pb; | |
1403 | void *cursor; | |
1404 | struct rfapi_cfg *hc = NULL; | |
1405 | ||
1406 | vnc_zlog_debug_verbose("%s: entry", __func__); | |
1407 | ||
1408 | if (afi != AFI_IP && afi != AFI_IP6) { | |
1409 | vnc_zlog_debug_verbose("%s: bad afi %d, skipping", __func__, | |
1410 | afi); | |
1411 | return; | |
1412 | } | |
1413 | ||
1414 | if (!(hc = bgp->rfapi_cfg)) { | |
1415 | vnc_zlog_debug_verbose("%s: bgp->rfapi_cfg is NULL, skipping", | |
1416 | __func__); | |
1417 | return; | |
1418 | } | |
65efcfce | 1419 | |
d62a17ae | 1420 | /* check vnc redist flag for bgp direct routes */ |
1421 | if (!hc->redist[afi][ZEBRA_ROUTE_BGP_DIRECT]) { | |
1422 | vnc_zlog_debug_verbose( | |
1423 | "%s: bgp->rfapi_cfg->redist[afi=%d][type=ZEBRA_ROUTE_BGP_DIRECT] is 0, skipping", | |
1424 | __func__, afi); | |
1425 | return; | |
1426 | } | |
65efcfce | 1427 | |
d62a17ae | 1428 | if (hc->redist_mode != VNC_REDIST_MODE_RESOLVE_NVE) { |
1429 | vnc_zlog_debug_verbose("%s: not in resolve-nve mode, skipping", | |
1430 | __func__); | |
1431 | return; | |
65efcfce LB |
1432 | } |
1433 | ||
8cea9547 | 1434 | if (bgp->rfapi) |
d62a17ae | 1435 | sl = bgp->rfapi->resolve_nve_nexthop; |
1436 | ||
1437 | if (!sl) { | |
1438 | vnc_zlog_debug_verbose( | |
1439 | "%s: no resolve_nve_nexthop skiplist, skipping", | |
1440 | __func__); | |
1441 | return; | |
1442 | } | |
1443 | ||
1444 | if (!is_host_prefix(prefix)) { | |
1445 | vnc_zlog_debug_verbose("%s: not host prefix, skipping", | |
1446 | __func__); | |
1447 | return; | |
1448 | } | |
1449 | ||
1450 | rc = skiplist_first_value(sl, prefix, (void *)&pb, &cursor); | |
1451 | while (!rc) { | |
1452 | struct ecommunity *ecom; | |
1453 | struct prefix pfx_unicast_nexthop; | |
1454 | uint32_t *med = NULL; | |
1455 | uint32_t local_pref; | |
1456 | ||
1457 | memset(&pfx_unicast_nexthop, 0, | |
1458 | sizeof(struct prefix)); /* keep valgrind happy */ | |
1459 | ||
1460 | if (VNC_DEBUG(IMPORT_BGP_ADD_ROUTE)) { | |
872ed4c7 DS |
1461 | char hbuf[PREFIX_STRLEN]; |
1462 | char ubuf[PREFIX_STRLEN]; | |
65efcfce | 1463 | |
872ed4c7 DS |
1464 | prefix2str(&pb->hpfx, hbuf, sizeof(hbuf)); |
1465 | prefix2str(&pb->upfx, ubuf, sizeof(ubuf)); | |
65efcfce | 1466 | |
d62a17ae | 1467 | vnc_zlog_debug_any( |
40381db7 DS |
1468 | "%s: examining RHN Entry (q=%p): upfx=%s, hpfx=%s, ubpi=%p", |
1469 | __func__, cursor, ubuf, hbuf, pb->ubpi); | |
d62a17ae | 1470 | } |
65efcfce | 1471 | |
40381db7 | 1472 | if (process_unicast_route(bgp, afi, &pb->upfx, pb->ubpi, &ecom, |
d62a17ae | 1473 | &pfx_unicast_nexthop)) { |
65efcfce | 1474 | |
d62a17ae | 1475 | vnc_zlog_debug_verbose( |
1476 | "%s: process_unicast_route error, skipping", | |
1477 | __func__); | |
1478 | continue; | |
1479 | } | |
40381db7 | 1480 | local_pref = calc_local_pref(pb->ubpi->attr, pb->ubpi->peer); |
65efcfce | 1481 | |
05864da7 DS |
1482 | if (pb->ubpi->attr->flag |
1483 | & ATTR_FLAG_BIT(BGP_ATTR_MULTI_EXIT_DISC)) | |
40381db7 | 1484 | med = &pb->ubpi->attr->med; |
65efcfce | 1485 | |
d62a17ae | 1486 | /* |
1487 | * Sanity check | |
1488 | */ | |
1489 | if (vnc_prefix_cmp(&pfx_unicast_nexthop, prefix)) { | |
872ed4c7 DS |
1490 | char str_unh[PREFIX_STRLEN]; |
1491 | char str_nve_pfx[PREFIX_STRLEN]; | |
65efcfce | 1492 | |
872ed4c7 DS |
1493 | prefix2str(&pfx_unicast_nexthop, str_unh, |
1494 | sizeof(str_unh)); | |
1495 | prefix2str(prefix, str_nve_pfx, sizeof(str_nve_pfx)); | |
d62a17ae | 1496 | |
1497 | vnc_zlog_debug_verbose( | |
40381db7 | 1498 | "%s: FATAL: resolve_nve_nexthop list item bpi nexthop %s != nve pfx %s", |
d62a17ae | 1499 | __func__, str_unh, str_nve_pfx); |
1500 | assert(0); | |
1501 | } | |
1502 | ||
1503 | vnc_import_bgp_add_route_mode_resolve_nve_one_bi( | |
40381db7 | 1504 | bgp, afi, bpi, /* VPN bpi */ |
d62a17ae | 1505 | prd, &pb->upfx, /* unicast prefix */ |
1506 | &local_pref, med, ecom); | |
1507 | ||
1508 | if (ecom) | |
1509 | ecommunity_free(&ecom); | |
65efcfce LB |
1510 | |
1511 | #if DEBUG_RHN_LIST | |
d62a17ae | 1512 | /* debug */ |
1513 | { | |
872ed4c7 | 1514 | char pbuf[PREFIX_STRLEN]; |
65efcfce | 1515 | |
872ed4c7 | 1516 | prefix2str(prefix, pbuf, sizeof(pbuf)); |
65efcfce | 1517 | |
d62a17ae | 1518 | vnc_zlog_debug_verbose( |
1519 | "%s: advancing past RHN Entry (q=%p): with prefix %s", | |
1520 | __func__, cursor, pbuf); | |
1521 | print_rhn_list(__func__, NULL); /* debug */ | |
1522 | } | |
65efcfce | 1523 | #endif |
d62a17ae | 1524 | rc = skiplist_next_value(sl, prefix, (void *)&pb, &cursor); |
1525 | } | |
1526 | vnc_zlog_debug_verbose("%s: done", __func__); | |
65efcfce LB |
1527 | } |
1528 | ||
1529 | ||
d62a17ae | 1530 | void vnc_import_bgp_del_vnc_host_route_mode_resolve_nve( |
1531 | struct bgp *bgp, struct prefix_rd *prd, /* RD */ | |
1532 | struct bgp_table *table_rd, /* per-rd VPN route table */ | |
1533 | struct prefix *prefix, /* VPN prefix */ | |
40381db7 | 1534 | struct bgp_path_info *bpi) /* old VPN host route */ |
65efcfce | 1535 | { |
d62a17ae | 1536 | afi_t afi = family2afi(prefix->family); |
1537 | struct skiplist *sl = NULL; | |
1538 | struct prefix_bag *pb; | |
1539 | void *cursor; | |
1540 | struct rfapi_cfg *hc = NULL; | |
1541 | int rc; | |
1542 | ||
1543 | { | |
872ed4c7 | 1544 | char str_pfx[PREFIX_STRLEN]; |
d62a17ae | 1545 | |
872ed4c7 | 1546 | prefix2str(prefix, str_pfx, sizeof(str_pfx)); |
d62a17ae | 1547 | |
1548 | vnc_zlog_debug_verbose("%s(bgp=%p, nve prefix=%s)", __func__, | |
1549 | bgp, str_pfx); | |
1550 | } | |
1551 | ||
1552 | if (afi != AFI_IP && afi != AFI_IP6) | |
1553 | return; | |
1554 | ||
1555 | if (!(hc = bgp->rfapi_cfg)) { | |
1556 | vnc_zlog_debug_verbose("%s: bgp->rfapi_cfg is NULL, skipping", | |
1557 | __func__); | |
1558 | return; | |
1559 | } | |
1560 | ||
1561 | /* check vnc redist flag for bgp direct routes */ | |
1562 | if (!hc->redist[afi][ZEBRA_ROUTE_BGP_DIRECT]) { | |
1563 | vnc_zlog_debug_verbose( | |
1564 | "%s: bgp->rfapi_cfg->redist[afi=%d][type=ZEBRA_ROUTE_BGP_DIRECT] is 0, skipping", | |
1565 | __func__, afi); | |
1566 | return; | |
1567 | } | |
1568 | ||
1569 | if (hc->redist_mode != VNC_REDIST_MODE_RESOLVE_NVE) { | |
1570 | vnc_zlog_debug_verbose("%s: not in resolve-nve mode, skipping", | |
1571 | __func__); | |
1572 | return; | |
1573 | } | |
1574 | ||
8cea9547 | 1575 | if (bgp->rfapi) |
d62a17ae | 1576 | sl = bgp->rfapi->resolve_nve_nexthop; |
1577 | ||
1578 | if (!sl) { | |
1579 | vnc_zlog_debug_verbose("%s: no RHN entries, skipping", | |
1580 | __func__); | |
1581 | return; | |
1582 | } | |
1583 | ||
1584 | if (!is_host_prefix(prefix)) { | |
1585 | vnc_zlog_debug_verbose("%s: not host route, skip", __func__); | |
1586 | return; | |
1587 | } | |
1588 | ||
1589 | /* | |
1590 | * Find all entries with key == CE in the RHN list | |
1591 | */ | |
1592 | rc = skiplist_first_value(sl, prefix, (void *)&pb, &cursor); | |
1593 | while (!rc) { | |
1594 | ||
1595 | struct ecommunity *ecom; | |
1596 | struct prefix pfx_unicast_nexthop; | |
1597 | ||
1598 | memset(&pfx_unicast_nexthop, 0, | |
1599 | sizeof(struct prefix)); /* keep valgrind happy */ | |
1600 | ||
40381db7 | 1601 | if (process_unicast_route(bgp, afi, &pb->upfx, pb->ubpi, &ecom, |
d62a17ae | 1602 | &pfx_unicast_nexthop)) { |
1603 | ||
1604 | vnc_zlog_debug_verbose( | |
1605 | "%s: process_unicast_route error, skipping", | |
1606 | __func__); | |
1607 | continue; | |
1608 | } | |
1609 | ||
1610 | /* | |
1611 | * Sanity check | |
1612 | */ | |
1613 | if (vnc_prefix_cmp(&pfx_unicast_nexthop, prefix)) { | |
872ed4c7 DS |
1614 | char str_unh[PREFIX_STRLEN]; |
1615 | char str_nve_pfx[PREFIX_STRLEN]; | |
d62a17ae | 1616 | |
872ed4c7 DS |
1617 | prefix2str(&pfx_unicast_nexthop, str_unh, |
1618 | sizeof(str_unh)); | |
1619 | prefix2str(prefix, str_nve_pfx, sizeof(str_nve_pfx)); | |
d62a17ae | 1620 | |
1621 | vnc_zlog_debug_verbose( | |
40381db7 | 1622 | "%s: FATAL: resolve_nve_nexthop list item bpi nexthop %s != nve pfx %s", |
d62a17ae | 1623 | __func__, str_unh, str_nve_pfx); |
1624 | assert(0); | |
1625 | } | |
1626 | ||
1627 | vnc_import_bgp_del_route_mode_resolve_nve_one_bi( | |
40381db7 | 1628 | bgp, afi, bpi, prd, &pb->upfx); |
d62a17ae | 1629 | |
1630 | if (ecom) | |
1631 | ecommunity_free(&ecom); | |
1632 | ||
1633 | rc = skiplist_next_value(sl, prefix, (void *)&pb, &cursor); | |
1634 | } | |
65efcfce LB |
1635 | } |
1636 | ||
1637 | ||
1638 | /*********************************************************************** | |
1639 | * Exterior Routes | |
1640 | ***********************************************************************/ | |
1641 | ||
1642 | #define DEBUG_IS_USABLE_INTERIOR 1 | |
1643 | ||
40381db7 | 1644 | static int is_usable_interior_route(struct bgp_path_info *bpi_interior) |
65efcfce | 1645 | { |
40381db7 | 1646 | if (!VALID_INTERIOR_TYPE(bpi_interior->type)) { |
65efcfce | 1647 | #if DEBUG_IS_USABLE_INTERIOR |
d62a17ae | 1648 | vnc_zlog_debug_verbose( |
1649 | "%s: NO: type %d is not valid interior type", __func__, | |
40381db7 | 1650 | bpi_interior->type); |
65efcfce | 1651 | #endif |
d62a17ae | 1652 | return 0; |
1653 | } | |
40381db7 | 1654 | if (!CHECK_FLAG(bpi_interior->flags, BGP_PATH_VALID)) { |
65efcfce | 1655 | #if DEBUG_IS_USABLE_INTERIOR |
1defdda8 | 1656 | vnc_zlog_debug_verbose("%s: NO: BGP_PATH_VALID not set", |
d62a17ae | 1657 | __func__); |
65efcfce | 1658 | #endif |
d62a17ae | 1659 | return 0; |
1660 | } | |
1661 | return 1; | |
65efcfce LB |
1662 | } |
1663 | ||
1664 | /* | |
1665 | * There should be only one of these per prefix at a time. | |
1666 | * This should be called as a result of selection operation | |
1667 | * | |
1668 | * NB should be called espacially for bgp instances that are named, | |
1669 | * because the exterior routes will always come from one of those. | |
1670 | * We filter here on the instance name to make sure we get only the | |
1671 | * right routes. | |
1672 | */ | |
d62a17ae | 1673 | static void vnc_import_bgp_exterior_add_route_it( |
1674 | struct bgp *bgp, /* exterior instance, we hope */ | |
1675 | struct prefix *prefix, /* unicast prefix */ | |
4b7e6066 | 1676 | struct bgp_path_info *info, /* unicast info */ |
d62a17ae | 1677 | struct rfapi_import_table *it_only) /* NULL, or limit to this IT */ |
65efcfce | 1678 | { |
d62a17ae | 1679 | struct rfapi *h; |
1680 | struct rfapi_cfg *hc; | |
1681 | struct prefix pfx_orig_nexthop; | |
1682 | struct rfapi_import_table *it; | |
1683 | struct bgp *bgp_default = bgp_get_default(); | |
1684 | afi_t afi = family2afi(prefix->family); | |
1685 | ||
1686 | if (!bgp_default) | |
1687 | return; | |
1688 | ||
1689 | h = bgp_default->rfapi; | |
1690 | hc = bgp_default->rfapi_cfg; | |
1691 | ||
1692 | vnc_zlog_debug_verbose("%s: entry with it=%p", __func__, it_only); | |
1693 | ||
1694 | if (!h || !hc) { | |
1695 | vnc_zlog_debug_verbose( | |
1696 | "%s: rfapi or rfapi_cfg not instantiated, skipping", | |
1697 | __func__); | |
1698 | return; | |
1699 | } | |
1700 | if (!hc->redist_bgp_exterior_view) { | |
1701 | vnc_zlog_debug_verbose("%s: exterior view not set, skipping", | |
1702 | __func__); | |
1703 | return; | |
1704 | } | |
1705 | if (bgp != hc->redist_bgp_exterior_view) { | |
1706 | vnc_zlog_debug_verbose( | |
1707 | "%s: bgp %p != hc->redist_bgp_exterior_view %p, skipping", | |
1708 | __func__, bgp, hc->redist_bgp_exterior_view); | |
1709 | return; | |
1710 | } | |
1711 | ||
1712 | if (!hc->redist[afi][ZEBRA_ROUTE_BGP_DIRECT_EXT]) { | |
1713 | vnc_zlog_debug_verbose( | |
1714 | "%s: redist of exterior routes not enabled, skipping", | |
1715 | __func__); | |
1716 | return; | |
1717 | } | |
1718 | ||
d62a17ae | 1719 | /* |
1720 | * Extract nexthop from exterior route | |
1721 | * | |
1722 | * Incoming prefix is unicast. If v6, it is in multiprotocol area, | |
1723 | * but if v4 it is in attr->nexthop | |
1724 | */ | |
1725 | rfapiUnicastNexthop2Prefix(afi, info->attr, &pfx_orig_nexthop); | |
1726 | ||
1727 | for (it = h->imports; it; it = it->next) { | |
fe08ba7e DS |
1728 | struct agg_table *table; |
1729 | struct agg_node *rn; | |
1730 | struct agg_node *par; | |
40381db7 | 1731 | struct bgp_path_info *bpi_interior; |
d62a17ae | 1732 | int have_usable_route; |
1733 | ||
1734 | vnc_zlog_debug_verbose("%s: doing it %p", __func__, it); | |
1735 | ||
1736 | if (it_only && (it_only != it)) { | |
1737 | vnc_zlog_debug_verbose("%s: doesn't match it_only %p", | |
1738 | __func__, it_only); | |
1739 | continue; | |
1740 | } | |
1741 | ||
1742 | table = it->imported_vpn[afi]; | |
1743 | ||
fe08ba7e | 1744 | for (rn = agg_node_match(table, &pfx_orig_nexthop), |
d62a17ae | 1745 | have_usable_route = 0; |
1746 | (!have_usable_route) && rn;) { | |
1747 | ||
1748 | vnc_zlog_debug_verbose("%s: it %p trying rn %p", | |
1749 | __func__, it, rn); | |
1750 | ||
40381db7 DS |
1751 | for (bpi_interior = rn->info; bpi_interior; |
1752 | bpi_interior = bpi_interior->next) { | |
d62a17ae | 1753 | struct prefix_rd *prd; |
1754 | struct attr new_attr; | |
d7c0a89a | 1755 | uint32_t label = 0; |
d62a17ae | 1756 | |
40381db7 | 1757 | if (!is_usable_interior_route(bpi_interior)) |
d62a17ae | 1758 | continue; |
1759 | ||
1760 | vnc_zlog_debug_verbose( | |
40381db7 DS |
1761 | "%s: usable: bpi_interior %p", __func__, |
1762 | bpi_interior); | |
d62a17ae | 1763 | |
1764 | /* | |
1765 | * have a legitimate route to exterior's nexthop | |
1766 | * via NVE. | |
1767 | * | |
1768 | * Import unicast route to the import table | |
1769 | */ | |
1770 | have_usable_route = 1; | |
1771 | ||
40381db7 DS |
1772 | if (bpi_interior->extra) { |
1773 | prd = &bpi_interior->extra->vnc.import | |
d62a17ae | 1774 | .rd; |
1775 | label = decode_label( | |
40381db7 | 1776 | &bpi_interior->extra->label[0]); |
d62a17ae | 1777 | } else |
1778 | prd = NULL; | |
1779 | ||
1780 | /* use local_pref from unicast route */ | |
1781 | memset(&new_attr, 0, sizeof(struct attr)); | |
40381db7 | 1782 | bgp_attr_dup(&new_attr, bpi_interior->attr); |
d62a17ae | 1783 | if (info->attr->flag |
1784 | & ATTR_FLAG_BIT(BGP_ATTR_LOCAL_PREF)) { | |
1785 | new_attr.local_pref = | |
1786 | info->attr->local_pref; | |
1787 | new_attr.flag |= ATTR_FLAG_BIT( | |
1788 | BGP_ATTR_LOCAL_PREF); | |
1789 | } | |
1790 | ||
1791 | rfapiBgpInfoFilteredImportVPN( | |
1792 | it, FIF_ACTION_UPDATE, | |
40381db7 | 1793 | bpi_interior->peer, NULL, /* rfd */ |
d62a17ae | 1794 | prefix, NULL, afi, prd, &new_attr, |
1795 | ZEBRA_ROUTE_BGP_DIRECT_EXT, | |
1796 | BGP_ROUTE_REDISTRIBUTE, &label); | |
1797 | } | |
1798 | ||
1799 | if (have_usable_route) { | |
1800 | /* | |
1801 | * Make monitor | |
1802 | * | |
1803 | * TBD factor this out into its own function | |
1804 | */ | |
1805 | struct prefix *pfx_mon = prefix_new(); | |
1806 | if (!RFAPI_MONITOR_EXTERIOR(rn)->source) { | |
1807 | RFAPI_MONITOR_EXTERIOR(rn)->source = | |
1808 | skiplist_new( | |
1809 | 0, NULL, | |
1810 | (void (*)(void *)) | |
1811 | prefix_free); | |
fe08ba7e | 1812 | agg_lock_node(rn); /* for skiplist */ |
d62a17ae | 1813 | } |
fe08ba7e | 1814 | agg_lock_node(rn); /* for skiplist entry */ |
d62a17ae | 1815 | prefix_copy(pfx_mon, prefix); |
1816 | if (!skiplist_insert( | |
1817 | RFAPI_MONITOR_EXTERIOR(rn)->source, | |
1818 | info, pfx_mon)) { | |
1819 | ||
18ee8310 | 1820 | bgp_path_info_lock(info); |
d62a17ae | 1821 | } |
1822 | } | |
fe08ba7e | 1823 | par = agg_node_parent(rn); |
d62a17ae | 1824 | if (par) |
fe08ba7e DS |
1825 | agg_lock_node(par); |
1826 | agg_unlock_node(rn); | |
d62a17ae | 1827 | rn = par; |
1828 | } | |
1829 | if (rn) | |
fe08ba7e | 1830 | agg_unlock_node(rn); |
d62a17ae | 1831 | |
1832 | if (!have_usable_route) { | |
1833 | struct prefix *pfx_mon = prefix_new(); | |
1834 | prefix_copy(pfx_mon, prefix); | |
1835 | if (!skiplist_insert(it->monitor_exterior_orphans, info, | |
1836 | pfx_mon)) { | |
1837 | ||
18ee8310 | 1838 | bgp_path_info_lock(info); |
d62a17ae | 1839 | } |
1840 | } | |
1841 | } | |
65efcfce LB |
1842 | } |
1843 | ||
d62a17ae | 1844 | void vnc_import_bgp_exterior_add_route( |
4b7e6066 DS |
1845 | struct bgp *bgp, /* exterior instance, we hope */ |
1846 | struct prefix *prefix, /* unicast prefix */ | |
1847 | struct bgp_path_info *info) /* unicast info */ | |
65efcfce | 1848 | { |
d62a17ae | 1849 | vnc_import_bgp_exterior_add_route_it(bgp, prefix, info, NULL); |
65efcfce LB |
1850 | } |
1851 | ||
1852 | /* | |
1853 | * There should be only one of these per prefix at a time. | |
1854 | * This should probably be called as a result of selection operation. | |
1855 | * | |
1856 | * NB should be called espacially for bgp instances that are named, | |
1857 | * because the exterior routes will always come from one of those. | |
1858 | * We filter here on the instance name to make sure we get only the | |
1859 | * right routes. | |
1860 | */ | |
d62a17ae | 1861 | void vnc_import_bgp_exterior_del_route( |
1862 | struct bgp *bgp, struct prefix *prefix, /* unicast prefix */ | |
4b7e6066 | 1863 | struct bgp_path_info *info) /* unicast info */ |
65efcfce | 1864 | { |
d62a17ae | 1865 | struct rfapi *h; |
1866 | struct rfapi_cfg *hc; | |
1867 | struct rfapi_import_table *it; | |
1868 | struct prefix pfx_orig_nexthop; | |
1869 | afi_t afi = family2afi(prefix->family); | |
1870 | struct bgp *bgp_default = bgp_get_default(); | |
1871 | ||
1872 | if (!bgp_default) | |
1873 | return; | |
1874 | ||
1875 | memset(&pfx_orig_nexthop, 0, | |
1876 | sizeof(struct prefix)); /* keep valgrind happy */ | |
1877 | ||
1878 | h = bgp_default->rfapi; | |
1879 | hc = bgp_default->rfapi_cfg; | |
1880 | ||
1881 | if (!h || !hc) { | |
1882 | vnc_zlog_debug_verbose( | |
1883 | "%s: rfapi or rfapi_cfg not instantiated, skipping", | |
1884 | __func__); | |
1885 | return; | |
1886 | } | |
1887 | if (!hc->redist_bgp_exterior_view) { | |
1888 | vnc_zlog_debug_verbose("%s: exterior view not set, skipping", | |
1889 | __func__); | |
1890 | return; | |
1891 | } | |
1892 | if (bgp != hc->redist_bgp_exterior_view) { | |
1893 | vnc_zlog_debug_verbose( | |
1894 | "%s: bgp %p != hc->redist_bgp_exterior_view %p, skipping", | |
1895 | __func__, bgp, hc->redist_bgp_exterior_view); | |
1896 | return; | |
1897 | } | |
1898 | if (!hc->redist[afi][ZEBRA_ROUTE_BGP_DIRECT_EXT]) { | |
1899 | vnc_zlog_debug_verbose( | |
1900 | "%s: redist of exterior routes no enabled, skipping", | |
1901 | __func__); | |
1902 | return; | |
1903 | } | |
1904 | ||
d62a17ae | 1905 | /* |
1906 | * Extract nexthop from exterior route | |
1907 | * | |
1908 | * Incoming prefix is unicast. If v6, it is in multiprotocol area, | |
1909 | * but if v4 it is in attr->nexthop | |
1910 | */ | |
1911 | rfapiUnicastNexthop2Prefix(afi, info->attr, &pfx_orig_nexthop); | |
1912 | ||
1913 | for (it = h->imports; it; it = it->next) { | |
fe08ba7e DS |
1914 | struct agg_table *table; |
1915 | struct agg_node *rn; | |
1916 | struct agg_node *par; | |
40381db7 | 1917 | struct bgp_path_info *bpi_interior; |
d62a17ae | 1918 | int have_usable_route; |
1919 | ||
1920 | table = it->imported_vpn[afi]; | |
1921 | ||
fe08ba7e | 1922 | for (rn = agg_node_match(table, &pfx_orig_nexthop), |
d62a17ae | 1923 | have_usable_route = 0; |
1924 | (!have_usable_route) && rn;) { | |
1925 | ||
40381db7 DS |
1926 | for (bpi_interior = rn->info; bpi_interior; |
1927 | bpi_interior = bpi_interior->next) { | |
d62a17ae | 1928 | struct prefix_rd *prd; |
d7c0a89a | 1929 | uint32_t label = 0; |
d62a17ae | 1930 | |
40381db7 | 1931 | if (!is_usable_interior_route(bpi_interior)) |
d62a17ae | 1932 | continue; |
1933 | ||
1934 | /* | |
1935 | * have a legitimate route to exterior's nexthop | |
1936 | * via NVE. | |
1937 | * | |
1938 | * Import unicast route to the import table | |
1939 | */ | |
1940 | have_usable_route = 1; | |
1941 | ||
40381db7 DS |
1942 | if (bpi_interior->extra) { |
1943 | prd = &bpi_interior->extra->vnc.import | |
d62a17ae | 1944 | .rd; |
1945 | label = decode_label( | |
40381db7 | 1946 | &bpi_interior->extra->label[0]); |
d62a17ae | 1947 | } else |
1948 | prd = NULL; | |
1949 | ||
1950 | rfapiBgpInfoFilteredImportVPN( | |
40381db7 | 1951 | it, FIF_ACTION_KILL, bpi_interior->peer, |
d62a17ae | 1952 | NULL, /* rfd */ |
1953 | prefix, NULL, afi, prd, | |
40381db7 | 1954 | bpi_interior->attr, |
d62a17ae | 1955 | ZEBRA_ROUTE_BGP_DIRECT_EXT, |
1956 | BGP_ROUTE_REDISTRIBUTE, &label); | |
1957 | ||
1958 | /* | |
1959 | * Delete monitor | |
1960 | * | |
1961 | * TBD factor this out into its own function | |
1962 | */ | |
1963 | { | |
1964 | if (RFAPI_MONITOR_EXTERIOR(rn) | |
1965 | ->source) { | |
1966 | if (!skiplist_delete( | |
1967 | RFAPI_MONITOR_EXTERIOR( | |
1968 | rn) | |
1969 | ->source, | |
1970 | info, NULL)) { | |
1971 | ||
18ee8310 DS |
1972 | bgp_path_info_unlock( |
1973 | info); | |
fe08ba7e | 1974 | agg_unlock_node( |
d62a17ae | 1975 | rn); /* sl entry |
fe08ba7e | 1976 | */ |
d62a17ae | 1977 | } |
1978 | if (skiplist_empty( | |
1979 | RFAPI_MONITOR_EXTERIOR( | |
1980 | rn) | |
1981 | ->source)) { | |
1982 | skiplist_free( | |
1983 | RFAPI_MONITOR_EXTERIOR( | |
1984 | rn) | |
1985 | ->source); | |
1986 | RFAPI_MONITOR_EXTERIOR( | |
1987 | rn) | |
1988 | ->source = NULL; | |
fe08ba7e | 1989 | agg_unlock_node( |
d62a17ae | 1990 | rn); /* skiplist |
1991 | itself | |
1992 | */ | |
1993 | } | |
1994 | } | |
1995 | } | |
1996 | } | |
fe08ba7e | 1997 | par = agg_node_parent(rn); |
d62a17ae | 1998 | if (par) |
fe08ba7e DS |
1999 | agg_lock_node(par); |
2000 | agg_unlock_node(rn); | |
d62a17ae | 2001 | rn = par; |
2002 | } | |
2003 | if (rn) | |
fe08ba7e | 2004 | agg_unlock_node(rn); |
d62a17ae | 2005 | |
2006 | if (!have_usable_route) { | |
2007 | if (!skiplist_delete(it->monitor_exterior_orphans, info, | |
2008 | NULL)) { | |
2009 | ||
18ee8310 | 2010 | bgp_path_info_unlock(info); |
d62a17ae | 2011 | } |
2012 | } | |
2013 | } | |
65efcfce LB |
2014 | } |
2015 | ||
2016 | /* | |
2017 | * This function should be called after a new interior VPN route | |
2018 | * has been added to an import_table. | |
2019 | * | |
2020 | * NB should also be called whenever an existing vpn interior route | |
2021 | * becomes valid (e.g., valid_interior_count is inremented) | |
2022 | */ | |
d62a17ae | 2023 | void vnc_import_bgp_exterior_add_route_interior( |
2024 | struct bgp *bgp, struct rfapi_import_table *it, | |
40381db7 DS |
2025 | struct agg_node *rn_interior, /* VPN IT node */ |
2026 | struct bgp_path_info *bpi_interior) /* VPN IT route */ | |
65efcfce | 2027 | { |
d62a17ae | 2028 | afi_t afi = family2afi(rn_interior->p.family); |
fe08ba7e | 2029 | struct agg_node *par; |
40381db7 | 2030 | struct bgp_path_info *bpi_exterior; |
d62a17ae | 2031 | struct prefix *pfx_exterior; /* exterior pfx */ |
2032 | void *cursor; | |
2033 | int rc; | |
2034 | struct list *list_adopted; | |
2035 | ||
2036 | vnc_zlog_debug_verbose("%s: entry", __func__); | |
2037 | ||
40381db7 | 2038 | if (!is_usable_interior_route(bpi_interior)) { |
d62a17ae | 2039 | vnc_zlog_debug_verbose( |
2040 | "%s: not usable interior route, skipping", __func__); | |
2041 | return; | |
2042 | } | |
2043 | ||
2044 | if (!bgp->rfapi_cfg->redist[afi][ZEBRA_ROUTE_BGP_DIRECT_EXT]) { | |
2045 | vnc_zlog_debug_verbose( | |
2046 | "%s: redist of exterior routes no enabled, skipping", | |
2047 | __func__); | |
2048 | return; | |
2049 | } | |
2050 | ||
2051 | if (it == bgp->rfapi->it_ce) { | |
2052 | vnc_zlog_debug_verbose("%s: import table is it_ce, skipping", | |
2053 | __func__); | |
2054 | return; | |
2055 | } | |
2056 | ||
2057 | /*debugging */ | |
2058 | { | |
872ed4c7 | 2059 | char str_pfx[PREFIX_STRLEN]; |
d62a17ae | 2060 | |
872ed4c7 | 2061 | prefix2str(&rn_interior->p, str_pfx, sizeof(str_pfx)); |
40381db7 DS |
2062 | vnc_zlog_debug_verbose("%s: interior prefix=%s, bpi type=%d", |
2063 | __func__, str_pfx, bpi_interior->type); | |
d62a17ae | 2064 | } |
2065 | ||
2066 | if (RFAPI_HAS_MONITOR_EXTERIOR(rn_interior)) { | |
2067 | ||
2068 | int count = 0; /* debugging */ | |
2069 | ||
2070 | vnc_zlog_debug_verbose( | |
2071 | "%s: has exterior monitor; ext src: %p", __func__, | |
2072 | RFAPI_MONITOR_EXTERIOR(rn_interior)->source); | |
2073 | ||
2074 | /* | |
2075 | * There is a monitor here already. Therefore, we do not need | |
2076 | * to do any pulldown. Just construct exterior routes based | |
2077 | * on the new interior route. | |
2078 | */ | |
2079 | cursor = NULL; | |
2080 | for (rc = skiplist_next( | |
2081 | RFAPI_MONITOR_EXTERIOR(rn_interior)->source, | |
40381db7 | 2082 | (void **)&bpi_exterior, (void **)&pfx_exterior, |
d62a17ae | 2083 | &cursor); |
2084 | !rc; rc = skiplist_next( | |
2085 | RFAPI_MONITOR_EXTERIOR(rn_interior)->source, | |
40381db7 DS |
2086 | (void **)&bpi_exterior, |
2087 | (void **)&pfx_exterior, &cursor)) { | |
d62a17ae | 2088 | |
2089 | struct prefix_rd *prd; | |
2090 | struct attr new_attr; | |
d7c0a89a | 2091 | uint32_t label = 0; |
d62a17ae | 2092 | |
2093 | ||
2094 | ++count; /* debugging */ | |
2095 | ||
40381db7 | 2096 | assert(bpi_exterior); |
d62a17ae | 2097 | assert(pfx_exterior); |
2098 | ||
40381db7 DS |
2099 | if (bpi_interior->extra) { |
2100 | prd = &bpi_interior->extra->vnc.import.rd; | |
d62a17ae | 2101 | label = decode_label( |
40381db7 | 2102 | &bpi_interior->extra->label[0]); |
d62a17ae | 2103 | } else |
2104 | prd = NULL; | |
2105 | ||
2106 | /* use local_pref from unicast route */ | |
2107 | memset(&new_attr, 0, sizeof(struct attr)); | |
40381db7 DS |
2108 | bgp_attr_dup(&new_attr, bpi_interior->attr); |
2109 | if (bpi_exterior | |
2110 | && (bpi_exterior->attr->flag | |
d62a17ae | 2111 | & ATTR_FLAG_BIT(BGP_ATTR_LOCAL_PREF))) { |
2112 | new_attr.local_pref = | |
40381db7 | 2113 | bpi_exterior->attr->local_pref; |
d62a17ae | 2114 | new_attr.flag |= |
2115 | ATTR_FLAG_BIT(BGP_ATTR_LOCAL_PREF); | |
2116 | } | |
2117 | ||
2118 | rfapiBgpInfoFilteredImportVPN( | |
40381db7 | 2119 | it, FIF_ACTION_UPDATE, bpi_interior->peer, |
d62a17ae | 2120 | NULL, /* rfd */ |
2121 | pfx_exterior, NULL, afi, prd, &new_attr, | |
2122 | ZEBRA_ROUTE_BGP_DIRECT_EXT, | |
2123 | BGP_ROUTE_REDISTRIBUTE, &label); | |
2124 | } | |
2125 | vnc_zlog_debug_verbose( | |
2126 | "%s: finished constructing exteriors based on existing monitors", | |
2127 | __func__); | |
2128 | return; | |
2129 | } | |
2130 | ||
2131 | vnc_zlog_debug_verbose("%s: no exterior monitor", __func__); | |
2132 | ||
2133 | /* | |
2134 | * No monitor at this node. Is this the first valid interior | |
2135 | * route at this node? | |
2136 | */ | |
2137 | if (RFAPI_MONITOR_EXTERIOR(rn_interior)->valid_interior_count > 1) { | |
2138 | vnc_zlog_debug_verbose( | |
2139 | "%s: new interior route not first valid one, skipping pulldown", | |
2140 | __func__); | |
2141 | return; | |
2142 | } | |
2143 | ||
2144 | /* | |
2145 | * Look up the tree for possible pulldown candidates. | |
2146 | * Find nearest parent with an exterior route monitor | |
2147 | */ | |
fe08ba7e DS |
2148 | for (par = agg_node_parent(rn_interior); par; |
2149 | par = agg_node_parent(par)) { | |
d62a17ae | 2150 | if (RFAPI_HAS_MONITOR_EXTERIOR(par)) |
2151 | break; | |
2152 | } | |
2153 | ||
2154 | if (par) { | |
2155 | ||
2156 | vnc_zlog_debug_verbose( | |
2157 | "%s: checking parent %p for possible pulldowns", | |
2158 | __func__, par); | |
2159 | ||
2160 | /* check monitors at par for possible pulldown */ | |
2161 | cursor = NULL; | |
2162 | for (rc = skiplist_next(RFAPI_MONITOR_EXTERIOR(par)->source, | |
40381db7 | 2163 | (void **)&bpi_exterior, |
d62a17ae | 2164 | (void **)&pfx_exterior, &cursor); |
2165 | !rc; | |
2166 | rc = skiplist_next(RFAPI_MONITOR_EXTERIOR(par)->source, | |
40381db7 | 2167 | (void **)&bpi_exterior, |
d62a17ae | 2168 | (void **)&pfx_exterior, &cursor)) { |
2169 | ||
2170 | struct prefix pfx_nexthop; | |
2171 | ||
2172 | memset(&pfx_nexthop, 0, | |
2173 | sizeof(struct prefix)); /* keep valgrind happy */ | |
2174 | ||
2175 | /* check original nexthop for prefix match */ | |
40381db7 | 2176 | rfapiUnicastNexthop2Prefix(afi, bpi_exterior->attr, |
d62a17ae | 2177 | &pfx_nexthop); |
2178 | ||
2179 | if (prefix_match(&rn_interior->p, &pfx_nexthop)) { | |
2180 | ||
40381db7 | 2181 | struct bgp_path_info *bpi; |
d62a17ae | 2182 | struct prefix_rd *prd; |
2183 | struct attr new_attr; | |
d7c0a89a | 2184 | uint32_t label = 0; |
d62a17ae | 2185 | |
2186 | /* do pull-down */ | |
2187 | ||
2188 | /* | |
2189 | * add monitor to longer prefix | |
2190 | */ | |
2191 | struct prefix *pfx_mon = prefix_new(); | |
2192 | prefix_copy(pfx_mon, pfx_exterior); | |
2193 | if (!RFAPI_MONITOR_EXTERIOR(rn_interior) | |
2194 | ->source) { | |
2195 | RFAPI_MONITOR_EXTERIOR(rn_interior) | |
2196 | ->source = skiplist_new( | |
2197 | 0, NULL, | |
2198 | (void (*)(void *))prefix_free); | |
fe08ba7e | 2199 | agg_lock_node(rn_interior); |
d62a17ae | 2200 | } |
2201 | skiplist_insert( | |
2202 | RFAPI_MONITOR_EXTERIOR(rn_interior) | |
2203 | ->source, | |
40381db7 | 2204 | bpi_exterior, pfx_mon); |
fe08ba7e | 2205 | agg_lock_node(rn_interior); |
d62a17ae | 2206 | |
2207 | /* | |
2208 | * Delete constructed exterior routes based on | |
2209 | * parent routes. | |
2210 | */ | |
40381db7 | 2211 | for (bpi = par->info; bpi; bpi = bpi->next) { |
d62a17ae | 2212 | |
40381db7 DS |
2213 | if (bpi->extra) { |
2214 | prd = &bpi->extra->vnc.import | |
2215 | .rd; | |
d62a17ae | 2216 | label = decode_label( |
40381db7 | 2217 | &bpi->extra->label[0]); |
d62a17ae | 2218 | } else |
2219 | prd = NULL; | |
2220 | ||
2221 | rfapiBgpInfoFilteredImportVPN( | |
40381db7 | 2222 | it, FIF_ACTION_KILL, bpi->peer, |
d62a17ae | 2223 | NULL, /* rfd */ |
2224 | pfx_exterior, NULL, afi, prd, | |
40381db7 | 2225 | bpi->attr, |
d62a17ae | 2226 | ZEBRA_ROUTE_BGP_DIRECT_EXT, |
2227 | BGP_ROUTE_REDISTRIBUTE, &label); | |
2228 | } | |
2229 | ||
2230 | ||
2231 | /* | |
2232 | * Add constructed exterior routes based on | |
2233 | * the new interior route at longer prefix. | |
2234 | */ | |
40381db7 DS |
2235 | if (bpi_interior->extra) { |
2236 | prd = &bpi_interior->extra->vnc.import | |
d62a17ae | 2237 | .rd; |
2238 | label = decode_label( | |
40381db7 | 2239 | &bpi_interior->extra->label[0]); |
d62a17ae | 2240 | } else |
2241 | prd = NULL; | |
2242 | ||
2243 | /* use local_pref from unicast route */ | |
2244 | memset(&new_attr, 0, sizeof(struct attr)); | |
40381db7 DS |
2245 | bgp_attr_dup(&new_attr, bpi_interior->attr); |
2246 | if (bpi_exterior | |
2247 | && (bpi_exterior->attr->flag | |
d62a17ae | 2248 | & ATTR_FLAG_BIT(BGP_ATTR_LOCAL_PREF))) { |
2249 | new_attr.local_pref = | |
40381db7 | 2250 | bpi_exterior->attr->local_pref; |
d62a17ae | 2251 | new_attr.flag |= ATTR_FLAG_BIT( |
2252 | BGP_ATTR_LOCAL_PREF); | |
2253 | } | |
2254 | ||
2255 | rfapiBgpInfoFilteredImportVPN( | |
2256 | it, FIF_ACTION_UPDATE, | |
40381db7 | 2257 | bpi_interior->peer, NULL, /* rfd */ |
d62a17ae | 2258 | pfx_exterior, NULL, afi, prd, &new_attr, |
2259 | ZEBRA_ROUTE_BGP_DIRECT_EXT, | |
2260 | BGP_ROUTE_REDISTRIBUTE, &label); | |
2261 | } | |
2262 | } | |
2263 | ||
2264 | /* | |
2265 | * The only monitors at rn_interior are the ones we added just | |
2266 | * above, so we can use the rn_interior list to identify which | |
2267 | * monitors to delete from the parent. | |
2268 | */ | |
2269 | cursor = NULL; | |
2270 | for (rc = skiplist_next( | |
2271 | RFAPI_MONITOR_EXTERIOR(rn_interior)->source, | |
40381db7 | 2272 | (void **)&bpi_exterior, NULL, &cursor); |
d62a17ae | 2273 | !rc; rc = skiplist_next( |
2274 | RFAPI_MONITOR_EXTERIOR(rn_interior)->source, | |
40381db7 | 2275 | (void **)&bpi_exterior, NULL, &cursor)) { |
d62a17ae | 2276 | |
2277 | ||
2278 | skiplist_delete(RFAPI_MONITOR_EXTERIOR(par)->source, | |
40381db7 | 2279 | bpi_exterior, NULL); |
fe08ba7e | 2280 | agg_unlock_node(par); /* sl entry */ |
d62a17ae | 2281 | } |
2282 | if (skiplist_empty(RFAPI_MONITOR_EXTERIOR(par)->source)) { | |
2283 | skiplist_free(RFAPI_MONITOR_EXTERIOR(par)->source); | |
2284 | RFAPI_MONITOR_EXTERIOR(par)->source = NULL; | |
fe08ba7e | 2285 | agg_unlock_node(par); /* sl itself */ |
d62a17ae | 2286 | } |
2287 | } | |
2288 | ||
2289 | vnc_zlog_debug_verbose("%s: checking orphans", __func__); | |
2290 | ||
2291 | /* | |
2292 | * See if any orphans can be pulled down to the current node | |
2293 | */ | |
2294 | cursor = NULL; | |
2295 | list_adopted = NULL; | |
2296 | for (rc = skiplist_next(it->monitor_exterior_orphans, | |
40381db7 | 2297 | (void **)&bpi_exterior, (void **)&pfx_exterior, |
d62a17ae | 2298 | &cursor); |
2299 | !rc; rc = skiplist_next(it->monitor_exterior_orphans, | |
40381db7 | 2300 | (void **)&bpi_exterior, |
d62a17ae | 2301 | (void **)&pfx_exterior, &cursor)) { |
2302 | ||
2303 | struct prefix pfx_nexthop; | |
872ed4c7 | 2304 | char buf[PREFIX_STRLEN]; |
d62a17ae | 2305 | afi_t afi_exterior = family2afi(pfx_exterior->family); |
2306 | ||
2307 | prefix2str(pfx_exterior, buf, sizeof(buf)); | |
d62a17ae | 2308 | vnc_zlog_debug_verbose( |
2309 | "%s: checking exterior orphan at prefix %s", __func__, | |
2310 | buf); | |
2311 | ||
2312 | if (afi_exterior != afi) { | |
2313 | vnc_zlog_debug_verbose( | |
2314 | "%s: exterior orphan afi %d != interior afi %d, skip", | |
2315 | __func__, afi_exterior, afi); | |
2316 | continue; | |
2317 | } | |
2318 | ||
2319 | /* check original nexthop for prefix match */ | |
40381db7 | 2320 | rfapiUnicastNexthop2Prefix(afi, bpi_exterior->attr, |
d62a17ae | 2321 | &pfx_nexthop); |
2322 | ||
2323 | if (prefix_match(&rn_interior->p, &pfx_nexthop)) { | |
2324 | ||
2325 | struct prefix_rd *prd; | |
2326 | struct attr new_attr; | |
d7c0a89a | 2327 | uint32_t label = 0; |
d62a17ae | 2328 | |
2329 | /* do pull-down */ | |
2330 | ||
2331 | /* | |
2332 | * add monitor to longer prefix | |
2333 | */ | |
2334 | ||
2335 | struct prefix *pfx_mon = prefix_new(); | |
2336 | prefix_copy(pfx_mon, pfx_exterior); | |
2337 | if (!RFAPI_MONITOR_EXTERIOR(rn_interior)->source) { | |
2338 | RFAPI_MONITOR_EXTERIOR(rn_interior)->source = | |
2339 | skiplist_new( | |
2340 | 0, NULL, | |
2341 | (void (*)(void *))prefix_free); | |
fe08ba7e | 2342 | agg_lock_node(rn_interior); /* sl */ |
d62a17ae | 2343 | } |
2344 | skiplist_insert( | |
2345 | RFAPI_MONITOR_EXTERIOR(rn_interior)->source, | |
40381db7 | 2346 | bpi_exterior, pfx_mon); |
fe08ba7e | 2347 | agg_lock_node(rn_interior); /* sl entry */ |
d62a17ae | 2348 | if (!list_adopted) { |
2349 | list_adopted = list_new(); | |
2350 | } | |
40381db7 | 2351 | listnode_add(list_adopted, bpi_exterior); |
d62a17ae | 2352 | |
2353 | /* | |
2354 | * Add constructed exterior routes based on the | |
2355 | * new interior route at the longer prefix. | |
2356 | */ | |
40381db7 DS |
2357 | if (bpi_interior->extra) { |
2358 | prd = &bpi_interior->extra->vnc.import.rd; | |
d62a17ae | 2359 | label = decode_label( |
40381db7 | 2360 | &bpi_interior->extra->label[0]); |
d62a17ae | 2361 | } else |
2362 | prd = NULL; | |
2363 | ||
2364 | /* use local_pref from unicast route */ | |
2365 | memset(&new_attr, 0, sizeof(struct attr)); | |
40381db7 DS |
2366 | bgp_attr_dup(&new_attr, bpi_interior->attr); |
2367 | if (bpi_exterior | |
2368 | && (bpi_exterior->attr->flag | |
d62a17ae | 2369 | & ATTR_FLAG_BIT(BGP_ATTR_LOCAL_PREF))) { |
2370 | new_attr.local_pref = | |
40381db7 | 2371 | bpi_exterior->attr->local_pref; |
d62a17ae | 2372 | new_attr.flag |= |
2373 | ATTR_FLAG_BIT(BGP_ATTR_LOCAL_PREF); | |
2374 | } | |
2375 | ||
2376 | rfapiBgpInfoFilteredImportVPN( | |
40381db7 | 2377 | it, FIF_ACTION_UPDATE, bpi_interior->peer, |
d62a17ae | 2378 | NULL, /* rfd */ |
2379 | pfx_exterior, NULL, afi, prd, &new_attr, | |
2380 | ZEBRA_ROUTE_BGP_DIRECT_EXT, | |
2381 | BGP_ROUTE_REDISTRIBUTE, &label); | |
2382 | } | |
2383 | } | |
2384 | if (list_adopted) { | |
2385 | struct listnode *node; | |
40381db7 | 2386 | struct agg_node *an_bpi_exterior; |
d62a17ae | 2387 | |
40381db7 DS |
2388 | for (ALL_LIST_ELEMENTS_RO(list_adopted, node, |
2389 | an_bpi_exterior)) { | |
d62a17ae | 2390 | skiplist_delete(it->monitor_exterior_orphans, |
40381db7 | 2391 | an_bpi_exterior, NULL); |
d62a17ae | 2392 | } |
6a154c88 | 2393 | list_delete(&list_adopted); |
d62a17ae | 2394 | } |
65efcfce LB |
2395 | } |
2396 | ||
2397 | /* | |
2398 | * This function should be called after an interior VPN route | |
2399 | * has been deleted from an import_table. | |
40381db7 | 2400 | * bpi_interior must still be valid, but it must already be detached |
65efcfce LB |
2401 | * from its route node and the route node's valid_interior_count |
2402 | * must already be decremented. | |
2403 | * | |
2404 | * NB should also be called whenever an existing vpn interior route | |
2405 | * becomes invalid (e.g., valid_interior_count is decremented) | |
2406 | */ | |
d62a17ae | 2407 | void vnc_import_bgp_exterior_del_route_interior( |
2408 | struct bgp *bgp, struct rfapi_import_table *it, | |
40381db7 DS |
2409 | struct agg_node *rn_interior, /* VPN IT node */ |
2410 | struct bgp_path_info *bpi_interior) /* VPN IT route */ | |
65efcfce | 2411 | { |
d62a17ae | 2412 | afi_t afi = family2afi(rn_interior->p.family); |
fe08ba7e | 2413 | struct agg_node *par; |
40381db7 | 2414 | struct bgp_path_info *bpi_exterior; |
d62a17ae | 2415 | struct prefix *pfx_exterior; /* exterior pfx */ |
2416 | void *cursor; | |
2417 | int rc; | |
2418 | ||
40381db7 | 2419 | if (!VALID_INTERIOR_TYPE(bpi_interior->type)) { |
d62a17ae | 2420 | vnc_zlog_debug_verbose( |
2421 | "%s: type %d not valid interior type, skipping", | |
40381db7 | 2422 | __func__, bpi_interior->type); |
d62a17ae | 2423 | return; |
2424 | } | |
2425 | ||
2426 | if (!bgp->rfapi_cfg->redist[afi][ZEBRA_ROUTE_BGP_DIRECT_EXT]) { | |
2427 | vnc_zlog_debug_verbose( | |
2428 | "%s: redist of exterior routes no enabled, skipping", | |
2429 | __func__); | |
2430 | return; | |
2431 | } | |
2432 | ||
2433 | if (it == bgp->rfapi->it_ce) { | |
2434 | vnc_zlog_debug_verbose("%s: it is it_ce, skipping", __func__); | |
2435 | return; | |
2436 | } | |
2437 | ||
2438 | /* If no exterior routes depend on this prefix, nothing to do */ | |
2439 | if (!RFAPI_HAS_MONITOR_EXTERIOR(rn_interior)) { | |
2440 | vnc_zlog_debug_verbose("%s: no exterior monitor, skipping", | |
2441 | __func__); | |
2442 | return; | |
2443 | } | |
2444 | ||
2445 | /*debugging */ | |
2446 | { | |
872ed4c7 | 2447 | char str_pfx[PREFIX_STRLEN]; |
d62a17ae | 2448 | |
872ed4c7 | 2449 | prefix2str(&rn_interior->p, str_pfx, sizeof(str_pfx)); |
d62a17ae | 2450 | |
40381db7 DS |
2451 | vnc_zlog_debug_verbose("%s: interior prefix=%s, bpi type=%d", |
2452 | __func__, str_pfx, bpi_interior->type); | |
d62a17ae | 2453 | } |
2454 | ||
2455 | /* | |
2456 | * Remove constructed routes based on the deleted interior route | |
2457 | */ | |
2458 | cursor = NULL; | |
2459 | for (rc = skiplist_next(RFAPI_MONITOR_EXTERIOR(rn_interior)->source, | |
40381db7 | 2460 | (void **)&bpi_exterior, (void **)&pfx_exterior, |
d62a17ae | 2461 | &cursor); |
2462 | !rc; | |
2463 | rc = skiplist_next(RFAPI_MONITOR_EXTERIOR(rn_interior)->source, | |
40381db7 | 2464 | (void **)&bpi_exterior, (void **)&pfx_exterior, |
d62a17ae | 2465 | &cursor)) { |
2466 | ||
2467 | struct prefix_rd *prd; | |
d7c0a89a | 2468 | uint32_t label = 0; |
d62a17ae | 2469 | |
40381db7 DS |
2470 | if (bpi_interior->extra) { |
2471 | prd = &bpi_interior->extra->vnc.import.rd; | |
2472 | label = decode_label(&bpi_interior->extra->label[0]); | |
d62a17ae | 2473 | } else |
2474 | prd = NULL; | |
2475 | ||
2476 | rfapiBgpInfoFilteredImportVPN( | |
40381db7 DS |
2477 | it, FIF_ACTION_KILL, bpi_interior->peer, NULL, /* rfd */ |
2478 | pfx_exterior, NULL, afi, prd, bpi_interior->attr, | |
d62a17ae | 2479 | ZEBRA_ROUTE_BGP_DIRECT_EXT, BGP_ROUTE_REDISTRIBUTE, |
2480 | &label); | |
2481 | } | |
2482 | ||
2483 | /* | |
2484 | * If there are no remaining valid interior routes at this prefix, | |
2485 | * we need to look up the tree for a possible node to move monitors to | |
2486 | */ | |
2487 | if (RFAPI_MONITOR_EXTERIOR(rn_interior)->valid_interior_count) { | |
2488 | vnc_zlog_debug_verbose( | |
2489 | "%s: interior routes still present, skipping", | |
2490 | __func__); | |
2491 | return; | |
2492 | } | |
65efcfce | 2493 | |
d62a17ae | 2494 | /* |
2495 | * Find nearest parent with at least one valid interior route | |
2496 | * If none is found, par will end up NULL, and we will move | |
2497 | * the monitors to the orphan list for this import table | |
2498 | */ | |
fe08ba7e DS |
2499 | for (par = agg_node_parent(rn_interior); par; |
2500 | par = agg_node_parent(par)) { | |
d62a17ae | 2501 | if (RFAPI_MONITOR_EXTERIOR(par)->valid_interior_count) |
2502 | break; | |
2503 | } | |
2504 | ||
2505 | vnc_zlog_debug_verbose("%s: par=%p, ext src: %p", __func__, par, | |
2506 | RFAPI_MONITOR_EXTERIOR(rn_interior)->source); | |
2507 | ||
2508 | /* move all monitors */ | |
2509 | /* | |
2510 | * We will use and delete every element of the source skiplist | |
2511 | */ | |
2512 | while (!skiplist_first(RFAPI_MONITOR_EXTERIOR(rn_interior)->source, | |
40381db7 DS |
2513 | (void **)&bpi_exterior, |
2514 | (void **)&pfx_exterior)) { | |
d62a17ae | 2515 | |
2516 | struct prefix *pfx_mon = prefix_new(); | |
2517 | ||
2518 | prefix_copy(pfx_mon, pfx_exterior); | |
2519 | ||
2520 | if (par) { | |
2521 | ||
40381db7 | 2522 | struct bgp_path_info *bpi; |
d62a17ae | 2523 | |
2524 | /* | |
2525 | * Add monitor to parent node | |
2526 | */ | |
2527 | if (!RFAPI_MONITOR_EXTERIOR(par)->source) { | |
2528 | RFAPI_MONITOR_EXTERIOR(par)->source = | |
2529 | skiplist_new( | |
2530 | 0, NULL, | |
2531 | (void (*)(void *))prefix_free); | |
fe08ba7e | 2532 | agg_lock_node(par); /* sl */ |
d62a17ae | 2533 | } |
2534 | skiplist_insert(RFAPI_MONITOR_EXTERIOR(par)->source, | |
40381db7 | 2535 | bpi_exterior, pfx_mon); |
fe08ba7e | 2536 | agg_lock_node(par); /* sl entry */ |
d62a17ae | 2537 | |
2538 | /* Add constructed exterior routes based on parent */ | |
40381db7 | 2539 | for (bpi = par->info; bpi; bpi = bpi->next) { |
d62a17ae | 2540 | |
2541 | struct prefix_rd *prd; | |
2542 | struct attr new_attr; | |
d7c0a89a | 2543 | uint32_t label = 0; |
d62a17ae | 2544 | |
40381db7 | 2545 | if (bpi->type == ZEBRA_ROUTE_BGP_DIRECT_EXT) |
d62a17ae | 2546 | continue; |
2547 | ||
40381db7 DS |
2548 | if (bpi->extra) { |
2549 | prd = &bpi->extra->vnc.import.rd; | |
317f1fe0 | 2550 | label = decode_label( |
40381db7 | 2551 | &bpi->extra->label[0]); |
d62a17ae | 2552 | } else |
2553 | prd = NULL; | |
2554 | ||
2555 | /* use local_pref from unicast route */ | |
2556 | memset(&new_attr, 0, sizeof(struct attr)); | |
40381db7 DS |
2557 | bgp_attr_dup(&new_attr, bpi->attr); |
2558 | if (bpi_exterior | |
2559 | && (bpi_exterior->attr->flag | |
d62a17ae | 2560 | & ATTR_FLAG_BIT(BGP_ATTR_LOCAL_PREF))) { |
2561 | new_attr.local_pref = | |
40381db7 | 2562 | bpi_exterior->attr->local_pref; |
d62a17ae | 2563 | new_attr.flag |= ATTR_FLAG_BIT( |
2564 | BGP_ATTR_LOCAL_PREF); | |
2565 | } | |
2566 | ||
2567 | rfapiBgpInfoFilteredImportVPN( | |
40381db7 | 2568 | it, FIF_ACTION_UPDATE, bpi->peer, |
d62a17ae | 2569 | NULL, /* rfd */ |
2570 | pfx_exterior, NULL, afi, prd, &new_attr, | |
2571 | ZEBRA_ROUTE_BGP_DIRECT_EXT, | |
2572 | BGP_ROUTE_REDISTRIBUTE, &label); | |
2573 | } | |
2574 | ||
2575 | } else { | |
2576 | ||
2577 | /* | |
2578 | * No interior route for exterior's nexthop. Save | |
2579 | * monitor | |
2580 | * in orphan list to await future route. | |
2581 | */ | |
2582 | skiplist_insert(it->monitor_exterior_orphans, | |
40381db7 | 2583 | bpi_exterior, pfx_mon); |
d62a17ae | 2584 | } |
2585 | ||
2586 | skiplist_delete_first( | |
2587 | RFAPI_MONITOR_EXTERIOR(rn_interior)->source); | |
fe08ba7e | 2588 | agg_unlock_node(rn_interior); /* sl entry */ |
d62a17ae | 2589 | } |
2590 | if (skiplist_empty(RFAPI_MONITOR_EXTERIOR(rn_interior)->source)) { | |
2591 | skiplist_free(RFAPI_MONITOR_EXTERIOR(rn_interior)->source); | |
2592 | RFAPI_MONITOR_EXTERIOR(rn_interior)->source = NULL; | |
fe08ba7e | 2593 | agg_unlock_node(rn_interior); /* sl itself */ |
d62a17ae | 2594 | } |
65efcfce LB |
2595 | } |
2596 | ||
2597 | /*********************************************************************** | |
2598 | * Generic add/delete unicast routes | |
2599 | ***********************************************************************/ | |
2600 | ||
d62a17ae | 2601 | void vnc_import_bgp_add_route(struct bgp *bgp, struct prefix *prefix, |
4b7e6066 | 2602 | struct bgp_path_info *info) |
65efcfce | 2603 | { |
d62a17ae | 2604 | afi_t afi = family2afi(prefix->family); |
65efcfce | 2605 | |
7f88f54a | 2606 | if (VNC_DEBUG(VERBOSE)) { |
d62a17ae | 2607 | struct prefix pfx_nexthop; |
872ed4c7 DS |
2608 | char buf[PREFIX_STRLEN]; |
2609 | char buf_nh[PREFIX_STRLEN]; | |
65efcfce | 2610 | |
872ed4c7 | 2611 | prefix2str(prefix, buf, sizeof(buf)); |
d62a17ae | 2612 | rfapiUnicastNexthop2Prefix(afi, info->attr, &pfx_nexthop); |
872ed4c7 | 2613 | prefix2str(&pfx_nexthop, buf_nh, sizeof(buf_nh)); |
65efcfce | 2614 | |
d62a17ae | 2615 | vnc_zlog_debug_verbose("%s: pfx %s, nh %s", __func__, buf, |
2616 | buf_nh); | |
2617 | } | |
65efcfce | 2618 | #if DEBUG_RHN_LIST |
d62a17ae | 2619 | print_rhn_list(__func__, "ENTER "); |
65efcfce | 2620 | #endif |
d62a17ae | 2621 | VNC_RHNCK(enter); |
2622 | ||
2623 | if (!afi) { | |
450971aa | 2624 | flog_err(EC_LIB_DEVELOPMENT, "%s: can't get afi of prefix", |
1c50c1c0 | 2625 | __func__); |
d62a17ae | 2626 | return; |
2627 | } | |
2628 | ||
2629 | if (!bgp->rfapi_cfg) { | |
2630 | vnc_zlog_debug_verbose("%s: bgp->rfapi_cfg is NULL, skipping", | |
2631 | __func__); | |
2632 | return; | |
2633 | } | |
2634 | ||
2635 | /* check vnc redist flag for bgp direct routes */ | |
2636 | if (!bgp->rfapi_cfg->redist[afi][ZEBRA_ROUTE_BGP_DIRECT]) { | |
2637 | vnc_zlog_debug_verbose( | |
2638 | "%s: bgp->rfapi_cfg->redist[afi=%d][type=%d=ZEBRA_ROUTE_BGP_DIRECT] is 0, skipping", | |
2639 | __func__, afi, ZEBRA_ROUTE_BGP_DIRECT); | |
2640 | return; | |
2641 | } | |
2642 | ||
2643 | switch (bgp->rfapi_cfg->redist_mode) { | |
2644 | case VNC_REDIST_MODE_PLAIN: | |
2645 | vnc_import_bgp_add_route_mode_plain(bgp, prefix, info); | |
2646 | break; | |
2647 | ||
2648 | case VNC_REDIST_MODE_RFG: | |
2649 | if (bgp->rfapi_cfg->rfg_redist) | |
2650 | vnc_import_bgp_add_route_mode_nvegroup( | |
2651 | bgp, prefix, info, bgp->rfapi_cfg->rfg_redist); | |
2652 | else | |
2653 | vnc_zlog_debug_verbose("%s: mode RFG but no redist RFG", | |
2654 | __func__); | |
2655 | break; | |
2656 | ||
2657 | case VNC_REDIST_MODE_RESOLVE_NVE: | |
2658 | vnc_import_bgp_add_route_mode_resolve_nve(bgp, prefix, info); | |
2659 | break; | |
2660 | } | |
65efcfce | 2661 | #if DEBUG_RHN_LIST |
d62a17ae | 2662 | print_rhn_list(__func__, "LEAVE "); |
65efcfce | 2663 | #endif |
d62a17ae | 2664 | VNC_RHNCK(leave); |
65efcfce LB |
2665 | } |
2666 | ||
2667 | /* | |
2668 | * "Withdrawing a Route" import process | |
2669 | */ | |
d62a17ae | 2670 | void vnc_import_bgp_del_route(struct bgp *bgp, struct prefix *prefix, |
4b7e6066 | 2671 | struct bgp_path_info *info) /* unicast info */ |
65efcfce | 2672 | { |
d62a17ae | 2673 | afi_t afi = family2afi(prefix->family); |
65efcfce | 2674 | |
d62a17ae | 2675 | assert(afi); |
65efcfce | 2676 | |
d62a17ae | 2677 | { |
2678 | struct prefix pfx_nexthop; | |
872ed4c7 DS |
2679 | char buf[PREFIX_STRLEN]; |
2680 | char buf_nh[PREFIX_STRLEN]; | |
65efcfce | 2681 | |
872ed4c7 | 2682 | prefix2str(prefix, buf, sizeof(buf)); |
d62a17ae | 2683 | rfapiUnicastNexthop2Prefix(afi, info->attr, &pfx_nexthop); |
872ed4c7 | 2684 | prefix2str(&pfx_nexthop, buf_nh, sizeof(buf_nh)); |
65efcfce | 2685 | |
d62a17ae | 2686 | vnc_zlog_debug_verbose("%s: pfx %s, nh %s", __func__, buf, |
2687 | buf_nh); | |
2688 | } | |
65efcfce | 2689 | #if DEBUG_RHN_LIST |
d62a17ae | 2690 | print_rhn_list(__func__, "ENTER "); |
65efcfce | 2691 | #endif |
d62a17ae | 2692 | VNC_RHNCK(enter); |
2693 | ||
2694 | if (!bgp->rfapi_cfg) { | |
2695 | vnc_zlog_debug_verbose("%s: bgp->rfapi_cfg is NULL, skipping", | |
2696 | __func__); | |
2697 | return; | |
2698 | } | |
2699 | ||
2700 | /* check bgp redist flag for vnc direct ("vpn") routes */ | |
2701 | if (!bgp->rfapi_cfg->redist[afi][ZEBRA_ROUTE_BGP_DIRECT]) { | |
2702 | vnc_zlog_debug_verbose( | |
2703 | "%s: bgp redistribution of afi=%d VNC direct routes is off", | |
2704 | __func__, afi); | |
2705 | return; | |
2706 | } | |
2707 | ||
2708 | switch (bgp->rfapi_cfg->redist_mode) { | |
2709 | case VNC_REDIST_MODE_PLAIN: | |
2710 | vnc_import_bgp_del_route_mode_plain(bgp, prefix, info); | |
2711 | break; | |
2712 | ||
2713 | case VNC_REDIST_MODE_RFG: | |
2714 | if (bgp->rfapi_cfg->rfg_redist) | |
2715 | vnc_import_bgp_del_route_mode_nvegroup(bgp, prefix, | |
2716 | info); | |
2717 | else | |
2718 | vnc_zlog_debug_verbose("%s: mode RFG but no redist RFG", | |
2719 | __func__); | |
2720 | break; | |
2721 | ||
2722 | case VNC_REDIST_MODE_RESOLVE_NVE: | |
2723 | vnc_import_bgp_del_route_mode_resolve_nve(bgp, afi, prefix, | |
2724 | info); | |
2725 | break; | |
2726 | } | |
65efcfce | 2727 | #if DEBUG_RHN_LIST |
d62a17ae | 2728 | print_rhn_list(__func__, "LEAVE "); |
65efcfce | 2729 | #endif |
d62a17ae | 2730 | VNC_RHNCK(leave); |
65efcfce LB |
2731 | } |
2732 | ||
2733 | ||
2734 | /*********************************************************************** | |
2735 | * Enable/Disable | |
2736 | ***********************************************************************/ | |
2737 | ||
d62a17ae | 2738 | void vnc_import_bgp_redist_enable(struct bgp *bgp, afi_t afi) |
65efcfce | 2739 | { |
d62a17ae | 2740 | /* iterate over bgp unicast v4 and v6 routes, call |
2741 | * vnc_import_bgp_add_route */ | |
65efcfce | 2742 | |
d62a17ae | 2743 | struct bgp_node *rn; |
65efcfce | 2744 | |
d62a17ae | 2745 | vnc_zlog_debug_verbose("%s: entry, afi=%d", __func__, afi); |
65efcfce | 2746 | |
d62a17ae | 2747 | if (bgp->rfapi_cfg->redist[afi][ZEBRA_ROUTE_BGP_DIRECT]) { |
2748 | vnc_zlog_debug_verbose( | |
2749 | "%s: already enabled for afi %d, skipping", __func__, | |
2750 | afi); | |
2751 | return; | |
2752 | } | |
2753 | bgp->rfapi_cfg->redist[afi][ZEBRA_ROUTE_BGP_DIRECT] = 1; | |
65efcfce | 2754 | |
d62a17ae | 2755 | for (rn = bgp_table_top(bgp->rib[afi][SAFI_UNICAST]); rn; |
2756 | rn = bgp_route_next(rn)) { | |
65efcfce | 2757 | |
40381db7 | 2758 | struct bgp_path_info *bpi; |
65efcfce | 2759 | |
6f94b685 DS |
2760 | for (bpi = bgp_node_get_bgp_path_info(rn); bpi; |
2761 | bpi = bpi->next) { | |
65efcfce | 2762 | |
40381db7 | 2763 | if (CHECK_FLAG(bpi->flags, BGP_PATH_REMOVED)) |
d62a17ae | 2764 | continue; |
65efcfce | 2765 | |
40381db7 | 2766 | vnc_import_bgp_add_route(bgp, &rn->p, bpi); |
d62a17ae | 2767 | } |
2768 | } | |
2769 | vnc_zlog_debug_verbose( | |
2770 | "%s: set redist[afi=%d][type=%d=ZEBRA_ROUTE_BGP_DIRECT] return", | |
2771 | __func__, afi, ZEBRA_ROUTE_BGP_DIRECT); | |
65efcfce LB |
2772 | } |
2773 | ||
d62a17ae | 2774 | void vnc_import_bgp_exterior_redist_enable(struct bgp *bgp, afi_t afi) |
65efcfce | 2775 | { |
d62a17ae | 2776 | struct bgp *bgp_exterior; |
2777 | struct bgp_node *rn; | |
65efcfce | 2778 | |
d62a17ae | 2779 | bgp_exterior = bgp->rfapi_cfg->redist_bgp_exterior_view; |
65efcfce | 2780 | |
d62a17ae | 2781 | if (bgp->rfapi_cfg->redist[afi][ZEBRA_ROUTE_BGP_DIRECT_EXT]) { |
2782 | vnc_zlog_debug_verbose( | |
2783 | "%s: already enabled for afi %d, skipping", __func__, | |
2784 | afi); | |
2785 | return; | |
2786 | } | |
2787 | bgp->rfapi_cfg->redist[afi][ZEBRA_ROUTE_BGP_DIRECT_EXT] = 1; | |
65efcfce | 2788 | |
d62a17ae | 2789 | if (!bgp_exterior) { |
2790 | vnc_zlog_debug_verbose( | |
2791 | "%s: no exterior view set yet, no routes to import yet", | |
2792 | __func__); | |
2793 | return; | |
2794 | } | |
65efcfce | 2795 | |
d62a17ae | 2796 | for (rn = bgp_table_top(bgp_exterior->rib[afi][SAFI_UNICAST]); rn; |
2797 | rn = bgp_route_next(rn)) { | |
65efcfce | 2798 | |
40381db7 | 2799 | struct bgp_path_info *bpi; |
65efcfce | 2800 | |
6f94b685 DS |
2801 | for (bpi = bgp_node_get_bgp_path_info(rn); bpi; |
2802 | bpi = bpi->next) { | |
65efcfce | 2803 | |
40381db7 | 2804 | if (CHECK_FLAG(bpi->flags, BGP_PATH_REMOVED)) |
d62a17ae | 2805 | continue; |
65efcfce | 2806 | |
d62a17ae | 2807 | vnc_import_bgp_exterior_add_route(bgp_exterior, &rn->p, |
40381db7 | 2808 | bpi); |
d62a17ae | 2809 | } |
2810 | } | |
2811 | vnc_zlog_debug_verbose( | |
2812 | "%s: set redist[afi=%d][type=%d=ZEBRA_ROUTE_BGP_DIRECT] return", | |
2813 | __func__, afi, ZEBRA_ROUTE_BGP_DIRECT); | |
65efcfce LB |
2814 | } |
2815 | ||
2816 | /* | |
2817 | * This function is for populating a newly-created Import Table | |
2818 | */ | |
d62a17ae | 2819 | void vnc_import_bgp_exterior_redist_enable_it( |
2820 | struct bgp *bgp, afi_t afi, struct rfapi_import_table *it_only) | |
65efcfce | 2821 | { |
d62a17ae | 2822 | struct bgp *bgp_exterior; |
2823 | struct bgp_node *rn; | |
65efcfce | 2824 | |
d62a17ae | 2825 | vnc_zlog_debug_verbose("%s: entry", __func__); |
65efcfce | 2826 | |
d62a17ae | 2827 | bgp_exterior = bgp->rfapi_cfg->redist_bgp_exterior_view; |
65efcfce | 2828 | |
d62a17ae | 2829 | if (!bgp->rfapi_cfg->redist[afi][ZEBRA_ROUTE_BGP_DIRECT_EXT]) { |
2830 | vnc_zlog_debug_verbose("%s: not enabled for afi %d, skipping", | |
2831 | __func__, afi); | |
2832 | return; | |
2833 | } | |
65efcfce | 2834 | |
d62a17ae | 2835 | if (!bgp_exterior) { |
2836 | vnc_zlog_debug_verbose( | |
2837 | "%s: no exterior view set yet, no routes to import yet", | |
2838 | __func__); | |
2839 | return; | |
2840 | } | |
65efcfce | 2841 | |
d62a17ae | 2842 | for (rn = bgp_table_top(bgp_exterior->rib[afi][SAFI_UNICAST]); rn; |
2843 | rn = bgp_route_next(rn)) { | |
65efcfce | 2844 | |
40381db7 | 2845 | struct bgp_path_info *bpi; |
65efcfce | 2846 | |
6f94b685 DS |
2847 | for (bpi = bgp_node_get_bgp_path_info(rn); bpi; |
2848 | bpi = bpi->next) { | |
65efcfce | 2849 | |
40381db7 | 2850 | if (CHECK_FLAG(bpi->flags, BGP_PATH_REMOVED)) |
d62a17ae | 2851 | continue; |
65efcfce | 2852 | |
d62a17ae | 2853 | vnc_import_bgp_exterior_add_route_it( |
40381db7 | 2854 | bgp_exterior, &rn->p, bpi, it_only); |
d62a17ae | 2855 | } |
2856 | } | |
65efcfce LB |
2857 | } |
2858 | ||
2859 | ||
d62a17ae | 2860 | void vnc_import_bgp_redist_disable(struct bgp *bgp, afi_t afi) |
65efcfce | 2861 | { |
d62a17ae | 2862 | /* |
2863 | * iterate over vpn routes, find routes of type ZEBRA_ROUTE_BGP_DIRECT, | |
2864 | * delete (call timer expire immediately) | |
2865 | */ | |
2866 | struct bgp_node *rn1; | |
2867 | struct bgp_node *rn2; | |
2868 | ||
2869 | vnc_zlog_debug_verbose("%s: entry", __func__); | |
2870 | ||
2871 | if (!bgp->rfapi_cfg->redist[afi][ZEBRA_ROUTE_BGP_DIRECT]) { | |
2872 | vnc_zlog_debug_verbose( | |
2873 | "%s: already disabled for afi %d, skipping", __func__, | |
2874 | afi); | |
2875 | return; | |
2876 | } | |
2877 | ||
2878 | /* | |
2879 | * Two-level table for SAFI_MPLS_VPN | |
2880 | * Be careful when changing the things we iterate over | |
2881 | */ | |
2882 | for (rn1 = bgp_table_top(bgp->rib[afi][SAFI_MPLS_VPN]); rn1; | |
2883 | rn1 = bgp_route_next(rn1)) { | |
2884 | ||
6f94b685 DS |
2885 | if (bgp_node_has_bgp_path_info_data(rn1)) { |
2886 | ||
67009e22 DS |
2887 | for (rn2 = bgp_table_top( |
2888 | bgp_node_get_bgp_table_info(rn1)); | |
2889 | rn2; rn2 = bgp_route_next(rn2)) { | |
d62a17ae | 2890 | |
40381db7 DS |
2891 | struct bgp_path_info *bpi; |
2892 | struct bgp_path_info *nextbpi; | |
d62a17ae | 2893 | |
6f94b685 DS |
2894 | for (bpi = bgp_node_get_bgp_path_info(rn2); bpi; |
2895 | bpi = nextbpi) { | |
d62a17ae | 2896 | |
40381db7 | 2897 | nextbpi = bpi->next; |
d62a17ae | 2898 | |
40381db7 | 2899 | if (bpi->type |
d62a17ae | 2900 | == ZEBRA_ROUTE_BGP_DIRECT) { |
2901 | ||
2902 | struct rfapi_descriptor *rfd; | |
40381db7 | 2903 | vncHDBgpDirect.peer = bpi->peer; |
d62a17ae | 2904 | |
40381db7 | 2905 | assert(bpi->extra); |
b575a12c | 2906 | |
40381db7 | 2907 | rfd = bpi->extra->vnc.export |
d62a17ae | 2908 | .rfapi_handle; |
2909 | ||
2910 | vnc_zlog_debug_verbose( | |
40381db7 DS |
2911 | "%s: deleting bpi=%p, bpi->peer=%p, bpi->type=%d, bpi->sub_type=%d, bpi->extra->vnc.export.rfapi_handle=%p [passing rfd=%p]", |
2912 | __func__, bpi, | |
2913 | bpi->peer, bpi->type, | |
2914 | bpi->sub_type, | |
2915 | (bpi->extra | |
2916 | ? bpi->extra | |
d62a17ae | 2917 | ->vnc |
2918 | .export | |
2919 | .rfapi_handle | |
2920 | : NULL), | |
2921 | rfd); | |
2922 | ||
2923 | ||
2924 | del_vnc_route( | |
40381db7 | 2925 | rfd, bpi->peer, bgp, |
d62a17ae | 2926 | SAFI_MPLS_VPN, &rn2->p, |
2927 | (struct prefix_rd *)&rn1 | |
2928 | ->p, | |
40381db7 DS |
2929 | bpi->type, |
2930 | bpi->sub_type, NULL, | |
2931 | 1); /* kill */ | |
d62a17ae | 2932 | |
2933 | vncHDBgpDirect.peer = NULL; | |
2934 | } | |
2935 | } | |
2936 | } | |
2937 | } | |
2938 | } | |
2939 | /* Clear RHN list */ | |
2940 | if (bgp->rfapi->resolve_nve_nexthop) { | |
2941 | struct prefix_bag *pb; | |
4b7e6066 | 2942 | struct bgp_path_info *info; |
d62a17ae | 2943 | while (!skiplist_first(bgp->rfapi->resolve_nve_nexthop, NULL, |
2944 | (void *)&pb)) { | |
40381db7 | 2945 | info = pb->ubpi; |
d62a17ae | 2946 | skiplist_delete_first(bgp->rfapi->resolve_nve_nexthop); |
18ee8310 | 2947 | bgp_path_info_unlock(info); |
d62a17ae | 2948 | } |
2949 | } | |
2950 | ||
2951 | bgp->rfapi_cfg->redist[afi][ZEBRA_ROUTE_BGP_DIRECT] = 0; | |
2952 | vnc_zlog_debug_verbose("%s: return", __func__); | |
65efcfce LB |
2953 | } |
2954 | ||
2955 | ||
d62a17ae | 2956 | void vnc_import_bgp_exterior_redist_disable(struct bgp *bgp, afi_t afi) |
65efcfce | 2957 | { |
d62a17ae | 2958 | struct rfapi_cfg *hc = bgp->rfapi_cfg; |
2959 | struct bgp *bgp_exterior = hc->redist_bgp_exterior_view; | |
65efcfce | 2960 | |
d62a17ae | 2961 | vnc_zlog_debug_verbose("%s: entry", __func__); |
65efcfce | 2962 | |
d62a17ae | 2963 | if (!hc->redist[afi][ZEBRA_ROUTE_BGP_DIRECT_EXT]) { |
2964 | vnc_zlog_debug_verbose( | |
2965 | "%s: already disabled for afi %d, skipping", __func__, | |
2966 | afi); | |
2967 | return; | |
2968 | } | |
65efcfce | 2969 | |
d62a17ae | 2970 | if (!bgp_exterior) { |
2971 | vnc_zlog_debug_verbose( | |
2972 | "%s: bgp exterior view not defined, skipping", | |
2973 | __func__); | |
2974 | return; | |
2975 | } | |
65efcfce LB |
2976 | |
2977 | ||
d62a17ae | 2978 | { |
2979 | struct bgp_node *rn; | |
2980 | for (rn = bgp_table_top(bgp_exterior->rib[afi][SAFI_UNICAST]); | |
2981 | rn; rn = bgp_route_next(rn)) { | |
65efcfce | 2982 | |
40381db7 | 2983 | struct bgp_path_info *bpi; |
65efcfce | 2984 | |
6f94b685 DS |
2985 | for (bpi = bgp_node_get_bgp_path_info(rn); bpi; |
2986 | bpi = bpi->next) { | |
65efcfce | 2987 | |
40381db7 | 2988 | if (CHECK_FLAG(bpi->flags, BGP_PATH_REMOVED)) |
d62a17ae | 2989 | continue; |
65efcfce | 2990 | |
d62a17ae | 2991 | vnc_import_bgp_exterior_del_route(bgp_exterior, |
40381db7 | 2992 | &rn->p, bpi); |
d62a17ae | 2993 | } |
2994 | } | |
65efcfce | 2995 | #if DEBUG_RHN_LIST |
d62a17ae | 2996 | print_rhn_list(__func__, NULL); |
65efcfce | 2997 | #endif |
d62a17ae | 2998 | } |
65efcfce | 2999 | |
d62a17ae | 3000 | bgp->rfapi_cfg->redist[afi][ZEBRA_ROUTE_BGP_DIRECT_EXT] = 0; |
3001 | vnc_zlog_debug_verbose("%s: return", __func__); | |
65efcfce | 3002 | } |